JP2017196730A - Stapler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stapler capable of positioning a connection needle without imparting a substantial load to the connection needle.SOLUTION: A stapler 1 comprises: a cutting mechanism for cutting a connected needle set 3 consisting of a plurality of flat nonmetallic needles 2 to separate the needle one by one; and a transfer mechanism 34 for transferring the connected needle set 3 to the cutting mechanism through a transfer passage 32. A positioning part 81 disposed halfway on the transfer passage 32 to be butted by the connected needle set 3, which is moved in a transfer operation by the transfer mechanism 34, to allow the connected needle set 3 to be positioned. The positioning part 81 is configured to perform the positioning on a rear side in the transfer direction with respect to a tip part of the transfer direction of the connected needle set 3. The positioning part 81 positions the connected needle set 3 by a butt of the connected needle set 3 depressing forward or rearward in the transfer direction.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a stapler.

  A stapler is used to spell a plurality of stacked sheets. Such a stapler generally uses a metal needle. However, when the paper is incinerated or shredded or recycled, the metal needle needs to be removed for sorting, which is troublesome. Moreover, when using for foodstuffs, there exists a request to avoid mixing in the iron needle which is a foreign material. Therefore, there are those using non-metallic needles such as paper and synthetic resin that do not require much labor (see Patent Document 1).

  A stapler using such a non-metallic needle has a through-hole formed in the paper, a non-metallic needle formed in a U-shape is inserted from one side of the paper, and a non-metal protruding to the other side of the paper. The paper is spelled by bending the needle leg of the needle.

  For this purpose, the stapler includes at least a pair of left and right punching blades capable of holding a U-shaped nonmetallic needle with respect to the sheet, and a nonmetal protruding on the other side of the sheet. A bending mechanism that bends the needle legs of the needles inward along the other surface of the paper and bonds the left and right needle legs together.

  Further, a plurality of non-metallic needles are connected in a flat state to form a belt-like connecting needle so that continuous operation is possible.

  Then, the stapler cuts the leading non-metallic needles one by one from the conveying mechanism that conveys the leading end of the belt-shaped connecting needle along the conveying path and the leading end of the connecting needle conveyed by the conveying mechanism. And a cutting and forming mechanism for forming a U-shape. The non-metallic needle cut and formed by the cutting and forming mechanism is loaded between the pair of left and right punching blades of the penetration mechanism by the transport mechanism described above.

  In addition, in order to make the belt-like connecting needles longer and smaller and easier to use, they are also rolled up. The stapler is structured so that the roll-shaped connecting needle can be handled.

JP 2008-44054 A

  However, the stapler described in Patent Document 1 has the following problems.

  When the connecting needle is cut into non-metallic needles by the cutting and forming mechanism, it is necessary to determine the cutting position with high accuracy. Therefore, it is very important to accurately position the connecting needle.

  Therefore, for example, by using a relatively strong elastic biasing means such as a metal spring, the connecting needle on the transport path is always pressed from the upper side, and the connecting needle is attached in the transport direction (to the front side). By urging the tip of the connecting needle against an abutting portion (for example, a punching blade of a penetrating mechanism) provided at a position in front of the conveyance path (the cutting mechanism), It is conceivable to perform positioning (pre-alignment).

  However, when pre-adjusting in this way, an excessive pressing force is required for pressing from above by the elastic biasing means so that the connecting needle is not retracted when the feed mechanism that moves back and forth moves backward. The problem that the connecting needle (the portion pressed against the contact portion such as the punching blade of the penetration mechanism) is easily damaged by the continuous application of the pressing force in the transport direction (front side) There arises a problem that resistance when the connecting needle is conveyed to the cutting mechanism is increased.

  The present invention aims to solve the above problems.

In order to solve the above problems, the present invention provides:
A cutting mechanism that cuts connecting needles formed by connecting a plurality of non-metallic needles in a flat state one by one;
In a stapler comprising a transport mechanism that transports the connecting needle to the cutting mechanism via a transport path,
A positioning unit is provided in the middle of the transport path so that the connection needle can be positioned by hitting the connection needle moved by a transport operation by the transport mechanism.
And since a positioning part positions a connection needle using the conveyance operation by a conveyance mechanism as it is, the positioning mechanism of a special structure becomes unnecessary and the structure of a positioning part becomes simple.

  According to the present invention, with the above configuration, the connecting needle can be accurately positioned without imposing a burden on the connecting needle.

It is a whole perspective view of a stapler. It is a side view of FIG. It is the whole non-metallic needle perspective view. It is a figure which shows the state which bound the paper with the nonmetallic needle. It is a top view which shows the state which connected the nonmetallic needle and made it the connection needle. It is a perspective view which shows the state which wound the connection needle | hook in roll shape. It is a top view which shows the modification of a nonmetallic needle. It is explanatory drawing of the guide part for parallel binding. It is explanatory drawing of the guide part for corner binding. FIG. 2 is an overall perspective view of the stapler similar to FIG. 1 with a main body cover removed. It is the perspective view which cut the stapler vertically. It is the side view which cut the stapler vertically in the width center position. (A) is the whole perspective view which looked at the conveyance path and which looked at the stapler from back diagonally upper side, (b) is the elements on larger scale. (A) is the perspective view similar to FIG. 12 which let the connection needle pass the conveyance path, (b) is the elements on larger scale. It is a figure which shows a conveyance path structural member. Among these, (a) is a perspective view seen from the front side, (b) is a perspective view seen from the rear side, (c) is a front view, (d) is a plan view, and (e) is a side view. It is the longitudinal cross-sectional view of the stapler which looked at the conveyance mechanism from the side. (A) is a general perspective view of the stapler (in a state where the conveyance path constituting member is removed) showing the conveyance mechanism, as viewed obliquely from above and (b) is a partially enlarged view thereof. It is a figure which shows a pusher. Among these, (a) is the perspective view seen from diagonally forward, (b) is the perspective view seen from the upper side, (c) is a top view. It is a disassembled perspective view which shows the relationship between the feed claw of a pusher, and the hole part 4 (feed hole) of a connection needle. It is a perspective view which shows the relationship between the feed claw of a pusher, and the hole (feed hole) of a nonmetallic needle. It is a perspective view which shows the operating state of a pusher (state which has a nonmetallic needle in a cutting shaping mechanism). It is a perspective view which shows the operating state of a pusher (state before sending a nonmetallic needle between the extraction blades of a penetration mechanism). It is a perspective view which shows the operating state of a pusher (state after sending a nonmetallic needle between the extraction blades of a penetration mechanism). It is a schematic side view of a stapler showing how the staple cover is attached and detached. The staple cover is shown with a part cut away to show the interior. (A) is the whole perspective view which looked at the stapler with which the staple cover was attached from back diagonally upward, (b) is the elements on larger scale. It is a figure which shows a staple cover. Among these, (a) is a perspective view seen from the oblique upper side, (b) is a perspective view seen from the oblique lateral side, (c) is a perspective view seen from the rear oblique lower side, and (d) is an obliquely lower front side. It is the perspective view seen from. It is a figure which shows the relationship between the receiving stand of a conveyance path, and the needle protection protrusion part of a staple cover. Among these, (a) is an overall perspective view, and (b) is a partially enlarged front view. It is a side view which shows the use condition of a 1st check claw. It is a side view which shows the use condition of the 1st non-return claw (state in which the non-connecting needle became three). It is the same side view as FIG. 27 which shows the other example of a positioning structure. It is an action | operation figure of FIG. 27B. It is a side view which shows the use condition of a 2nd non-return claw. It is a side view showing the state after use of the 2nd check claw. It is a top view which shows arrangement | positioning and a use condition of a 1st check claw and a 2nd check claw. Of these, (a) shows a large number of remaining connecting needles, (b) corresponds to FIG. 27A (the remaining three states), and (c) corresponds to FIG. 28 (the remaining two states). It is. FIG. 5 is a partially enlarged side view showing a relationship between a stapler cover guide and a staple cover guide protrusion. Among these, (a) is a figure which shows the state of an attachment initial stage, (b) is a figure which shows the state of an attachment middle stage, (c) is a figure which shows the state of an attachment late stage. It is the whole stapler longitudinal cross-sectional view which shows the self-holding structure of a connection needle. It is the elements on larger scale of FIG. It is the elements on larger scale similar to FIG. 33 which shows the other Example of a control member. It is the elements on larger scale which show the modification of FIG. 33A. It is the elements on larger scale similar to FIG. 33 which shows the other Example of a 2nd control part. It is a top view of the front-end | tip part of a connection needle | hook which shows the self-holding structure of a connection needle | hook. It is the elements on larger scale of FIG. It is a top view similar to FIG. 34 which shows the modification of the contact surface provided in the conveyance path structural member. It is a top view similar to FIG. 34 which shows the other Example of a contact surface. It is a top view similar to FIG. 34 which shows another Example of a contact surface. It is a top view similar to FIG. 34 which shows another Example of a contact surface. It is a top view similar to FIG. 34 which shows the other modification of the contact surface provided in the stapler main body. It is the elements on larger scale similar to FIG.26 (b) which shows the state at the time of removing a connecting needle. It is a perspective view of the structural member of a cutting shaping | molding mechanism and a penetration mechanism. It is an operation | movement figure of a cutting | disconnection shaping | molding mechanism and a penetration mechanism, and shows from the standby state to the state which shape | molds a nonmetallic needle and picks up the needle point with the needle press part of a needle press plate. It is an operation | movement figure of a cutting | disconnection shaping | molding mechanism and a penetration mechanism, and shows from the state in which the needle holding plate hold | maintains the nonmetallic needle | hook after shaping | molding to the state in which a nonmetallic needle is extruded in a punching blade by a pusher. It is an action | operation figure of a punching blade guide. Among these, (a) shows the initial position of the cutting blade guide, and (b) shows the state in which the cutting blade guide is retracted and the first guide portion starts to retract from between the cutting blades while guiding the cutting blade. , (C) shows a state in which the second guide portion is arranged between the punching blades and the bending operation is performed by the bending mechanism, and (d) shows that the bending blade folding operation is completed and the punching blade guide is Indicates a stopped state. It is an action | operation figure of the modification of a punching blade guide. Among these, (a) shows the initial position of the cutting blade guide, and (b) shows the state in which the cutting blade guide is retracted and the first guide portion starts to retract from between the cutting blades while guiding the cutting blade. , (C) shows a state in which the second guide portion is arranged between the punching blades and the bending operation is performed by the bending mechanism, and (d) shows that the bending blade folding operation is completed and the punching blade guide is Indicates a stopped state. It is an action | operation figure of the other modification of a punching blade guide. Among these, (a) shows the initial position of the cutting blade guide, and (b) shows the state in which the cutting blade guide is retracted and the first guide portion starts to retract from between the cutting blades while guiding the cutting blade. , (C) shows a state in which the second guide portion is arranged between the punching blades and the bending operation is performed by the bending mechanism, and (d) shows that the bending blade folding operation is completed and the punching blade guide is Indicates a stopped state. It is an operation | movement figure of a link and shows a standby state. It is an operation | movement figure of a link, and the link descend | falls by the descent | fall of a link shaft, and the state which the pusher retracted and removed from the needle presser plate is shown. It is an operation | movement figure of a link, and shows the state which the link rotated and the slide member started retreating. It is an operation | movement figure of a link, and the state which the slide member is retracting is shown. It is an operation | movement figure of a link, and the link shaft reaches | attains the lowest point and shows the state which the slide member retracted most. It is an operation | movement figure of a link, The link rotates in a return direction by the raise of a link shaft, and the state which the slide member advanced and returned to the standby position is shown. It is explanatory drawing of a driver main body. Among these, (a) is a plan view, (b) is a front view, (c) is a side view, (d) is a cross-sectional view, and (e) is a back view. The driver body when the crown presser bottoms is shown. Among these, (a) is a front view, (b) is a side view, and (c) is a sectional view. It is a figure which shows the structural member of a bending mechanism. Among these, (a) is a perspective view of a bending unit, (b) is a perspective view of a bonding member, and (c) is a perspective view of a slide member. It is a top view of a slide member. FIG. 4 is an explanatory view of a guide surface provided on the stapler body, and is a perspective view of the stapler body from an obliquely downward direction. It is a perspective view of the state which assembled | attached each structural member and link of the bending mechanism. It is an action | operation figure of a slide member. Among these, (a) shows the standby state before the operation of the slide member, (b) shows the state where the slide member has started to operate, and (c) shows the state where the slide member has stopped. It is an operation | movement figure of a bending member, and the nonmetallic needle | hook is inserted in the paper and the standby state before operation | movement of a bending member is shown. It is an action | operation figure of a bending member, and shows the state which operates the 1st bending member and the 2nd bending member sequentially, and is bending one and the other needle leg in this order. It is an action | operation figure of a bending member, and shows the state which has bonded one and the other needle leg with the bonding member. It is an operation | movement figure of a bending member, and shows the state which lowered the 1st bending member in order to avoid interference with the other needle leg. It is an action | operation figure of a bonding member. Among these, (a) shows the standby state before the operation of the bonding member, (b) shows the state in which the bonding member is rotating, and (c) shows the bonding member bonding a pair of needle legs. It shows the state. It is explanatory drawing of the modification of a bending mechanism. Among these, (a) is an example in which the first and second bending members are urged in the push-up direction by two coil springs, and (b) is the push-down direction in the first and second bending members by two coil springs. (C) is an example in which the first and second bending members are urged in the push-up direction by one coil spring.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 52 are for explaining this embodiment.

  <Overall Configuration of Stapler> The overall configuration of the stapler of this embodiment will be described below.

  First, the “direction” will be described with reference to the perspective view of FIG. 1 (or the side view of FIG. 1A). In this embodiment, the stapler 1 has the front side as the front, the back side as the rear, the right side as the right, the left side as the left, the upper side as the upper side, and the lower side as the lower side, with the paper insertion direction as a reference. That is, they are the front-rear direction X, the left-right direction Y, and the up-down direction Z. However, the direction is relative.

  Next, a needle (staple) used for the stapler 1 will be described with reference to FIG. This needle is a non-metallic needle 2 (or soft needle) made of paper or synthetic resin. The direction of the non-metallic needle 2 will be described with reference to the state where it is attached to the stapler 1.

  One non-metallic needle 2 has an inverted U-shape (or a downward U-shape) having a pair of left and right needle legs 2b and 2c that are bent substantially at right angles to both ends of a central crown 2a serving as a top. . The non-metallic needle 2 is mounted with the crown 2a facing the stapler 1 in the left-right direction Y, and the pair of left and right needle legs 2b, 2c are bent downward inside the stapler 1. Become. The nonmetallic needle 2 has a required length with respect to the front-rear direction X (the width of the nonmetallic needle 2 or the length of the nonmetallic needle 2 in the short direction).

  Then, as shown in FIG. 3, the pair of left and right needle legs 2 b and 2 c are inserted into the through holes p 1 of the paper P, and the needle legs 2 b and 2 c protruding from the back side of the paper P are arranged along the back surface of the paper P. By sequentially folding inward, a plurality of sheets P can be stacked and bound. The length obtained by adding the pair of left and right needle legs 2b, 2c is set longer than that of the crown 2a so that the needle legs 2b, 2c folded inward are overlapped.

  At this time, when the needle legs 2b and 2c are folded inward along the back surface of the paper P, the needle legs 2b that are folded inward first are formed on the inner surface (or back surface) of the needle legs 2c that are folded inward later. An adhesive portion 2d is provided so that it can be adhesively fixed to the outer surface (or surface). On the other hand, at least the outer surface (or surface) of the needle leg 2c that is folded inward from behind is adhered to the nonmetallic needle 2 (when the nonmetallic needle 2 is wound in a roll shape or stacked vertically). Non-adhesive processing is performed so as not to be adhered by the portion 2d.

  Then, as shown in FIG. 4, a plurality of non-metallic needles 2 are connected in a flatly extended state to form a strip-shaped connecting needle 3 (or a soft connecting needle) so that continuous operation is possible. . And as shown in FIG. 5, while winding this strip | belt-shaped connection needle 3 in roll shape, while making the connection needle 3 elongate, it accommodates in the inside of the stapler 1 so that it can be used compactly. (Roll connection needle).

  As shown in FIG. 4, the connecting needle 3 is formed by connecting a plurality of non-metallic needles 2 having an elongated rectangular shape extending straight in the left-right direction Y in the front-rear direction X by partially connecting with a connecting portion 3 a. Is. The connecting portions 3a are provided at two positions in the vicinity of both end portions in the left-right direction Y, and the connecting needles 3 pass through the paper P at portions (front and rear edge portions) outside the left and right connecting portions 3a. A tapered slit portion 3b for providing a tapered shape is provided so that it can be easily passed through the hole p1. Moreover, the inner part of the right and left connecting portions 3a is a continuous slit portion 3c that separates the rear edge portion and the front edge portion of the non-metallic needle 2 adjacent to each other in the front-rear direction.

  A pair of left and right holes 4 for operating the connecting needle 3 are provided at the boundary between each connecting portion 3a and the slit portion 3c inside thereof. The hole 4 is used as a locking hole for operating the connecting needle 3, a feed hole, a positioning hole, or the like. The hole 4 can be a round hole, a square hole, an elongated hole, or the like. In this case, it is a rounded quadrangular shape.

  However, the positions and the number of the connecting portions 3a and the hole portions 4 are not limited to the above. For example, in FIG. 4, in addition to the pair of left and right holes 4 provided at the boundary between the front and rear non-metallic needles 2 as described above, the center of each non-metallic needle 2 in the front-rear direction X and the left-right direction Y is further provided. The third hole 4 is provided in the part. However, the third hole 4 may not be provided if it is not necessary. In addition, as shown in FIG. 6, only one hole 4 may be provided at the center of each non-metallic needle 2 in the front-rear direction X and the left-right direction Y. Alternatively, three or more holes 4 may be provided in the left-right direction Y.

  The non-metallic needle 2 described above is bent downward so as to form a fold extending straight in the front-rear direction X at a position closer to the center in the left-right direction Y than the pair of left and right holes 4 in FIG. (See FIG. 2). Such a connecting needle 3 can be obtained, for example, by punching a flat paper or synthetic resin sheet having a uniform thickness into the shape described above.

  Next, the stapler 1 will be described.

  Returning to FIG. 1, the above-described stapler 1 includes a stapler body 5 that can be placed on a table, and an operation handle 6 that is attached to the stapler body 5 so as to be able to be pushed down.

  A paper base 7 for setting paper P (see FIGS. 7 and 8) is provided on the front side of the stapler main body 5, and a paper insertion that is a position where the paper P is bound is placed at the back of the paper base 7. A portion 8 (binding portion) is provided. The paper base 7 and the paper insertion portion 8 are provided substantially horizontally, and the upper portion of the paper base 7 is cut so that the front side portion of the stapler body 5 is inclined downwardly toward the paper insertion portion 8. By lacking, the paper base 7 and the paper insertion portion 8 are provided in the front portion of the stapler body 5 so as to be substantially Y-shaped in the lateral direction as a whole.

  Then, at the back of the paper insertion portion 8, as shown in FIG. 7, a parallel binding guide portion 7a for binding the paper P in parallel with the side of the paper P, and as shown in FIG. A corner binding guide portion 7b for binding the corners of the paper P obliquely is provided. The paper base 7 is provided with a mark portion 7c that serves as a guide for aligning the positions of the two sides constituting the corner of the paper P when the corner of the paper P is set in the corner binding guide portion 7b. Yes.

  The stapler main body 5 is provided with a main body cover 9 (see also FIG. 1) as an exterior. When the main body cover 9 is removed, as shown in FIG. The internal structure of the main body 5 is exposed. The operation handle 6 includes a resin handle operation unit 11 and a metal handle body 12. It should be noted that convex portions 9a and 12a (see FIG. 11) or the like can be provided at portions where the main body cover 9 and the handle main body portion 12 cross each other so as not to cause pinching of objects. The convex portions 9a and 12a are curved to the rear side with respect to a portion corresponding to the movable range of the handle main body portion 12 in at least one of the rear edge portion of the main body cover 9 and the rear edge portion of the handle main body portion 12. It has a shape that protrudes.

  The resin handle operating portion 11 extends rearward and obliquely upward from a position on the front end side of a portion (upper extension portion) that protrudes above the paper insertion portion 8 in the front portion of the stapler body 5 from the paper insertion portion 8. It is supposed to be.

  The metal handle main body 12 has a substantially triangular shape when viewed from the side, and the corner located on the front side and the lower side can be turned up and down via a support shaft 13 extending in the left-right direction Y. Is pivotally supported. On the other hand, the stapler main body 5 (the upper projecting portion thereof) is provided with a shaft hole 14 that supports the support shaft 13. A corner portion located on the upper side of the metal handle main body 12 having a substantially triangular shape when viewed from the side is attached to an intermediate portion in the front-rear direction X of the resin handle operating portion 11.

  From a standby state in which the resin handle operating portion 11 is inclined upward and backward from the upper projecting portion of the stapler body 5 by rotating up and down around the support shaft 13 of the metal handle main body portion 12. Then, it is tilted up and down so as to be in a substantially horizontal pushing state. As a result, the operation handle 6 is pushed substantially from the top to the bottom. At this time, as shown in FIG. 1A, a clearance S is secured between the handle operating portion 11 and the stapler body 5 that are in a horizontal state so as to prevent the object from being caught. ing.

  A link shaft 15 extending in the left-right direction Y is provided at the rear position along the lower side of the metal handle main body 12 having a substantially triangular shape when viewed from the side. It is attached to the stapler main body 5 so as to be able to move up and down (or is placed through). The operation of the operation handle 6 is transmitted to each mechanism of the stapler 1 by raising and lowering the link shaft 15.

  In order to raise and lower the link shaft 15 in the vertical direction Z, a guide groove 17 extending in the vertical direction Z is provided on a side surface 16 (side wall) of the stapler body 5. In addition, in order to allow the link shaft 15 to move up and down in the vertical direction Z, the shaft hole 14 that supports the support shaft 13 is a long hole, and the support shaft 13 becomes a movable fulcrum. Yes. By using the support shaft 13 as a movable fulcrum, the operation force of the operation handle 6 can be reduced.

  For example, the shaft hole 14 is a refracting hole having a horizontal part on the front side and an inclined part rising rearward on the rear side. Thereby, when the handle operating unit 11 is lifted upward, the support shaft 13 is located at the upper end of the inclined portion of the shaft hole 14, and when the handle operating unit 11 is pushed in from this state to be in a horizontal state, The support shaft 13 moves down the inclined portion of the shaft hole 14 to the front end portion of the horizontal portion. Then, as the handle operating portion 11 is pushed down, the support shaft 13 moves so as to move down the inclined portion of the shaft hole 14, that is, the fulcrum moves, so that the pushing force in the initial push-down can be reduced. Further, when the handle operating portion 11 approaches the lower limit position, the support shaft 13 enters the horizontal portion of the shaft hole 14, that is, the position of the fulcrum is fixed, thereby generating a large operating force. it can.

  For example, the link shaft 15 is used to move a metal link 18 interposed between the side surface 16 of the stapler body 5 and the metal handle body 12. The function of this link 18 will be described later.

  The link 18 has an upper portion sandwiched between the side surface 16 of the stapler body 5 and the metal handle body portion 12 in a direction along the side surface 16 of the stapler body 5 (for example, the front-rear direction X and the vertical direction). In the direction Z). Further, the lower portion of the link 18 is latched and held by a hook-like link holding portion 19 provided on the side surface 16 of the stapler body 5 so as to be movable in the direction along the side surface 16 of the stapler body 5.

  The link 18 includes an upper extending portion 18a that is positioned on the upper side and extends substantially in the vertical direction Z, an intermediate rear extending portion 18b that extends rearward from the lower end portion of the upper extending portion 18a, and the rear extending portion 18b. It has a substantially crank shape in a side view having a lower extending portion 18c on the lower side extending downward from the rear end portion.

  A first guide groove 21 is provided in the upper extension 18 a on the upper side of the link 18 so as to extend substantially in the vertical direction Z and be guided by raising and lowering the link shaft 15.

  Further, a guide hole 22 that guides the movement of the link 18 itself is provided in the intermediate rearward extending portion 18 b of the link 18, and a guide that is fitted into the guide hole 22 is formed on the side surface 16 of the stapler body 5. A protruding portion 23 is protruded. The guide protrusion 23 has a substantially square shape when viewed from the side.

  Further, at the rear part of the side surface 16 of the stapler body 5, a restricting protrusion 24 is provided so as to restrict the rearward movement of the link 18 by hitting the rear edge of the link 18. The restricting projection 24 is rectangular in side view.

  The link 18 controls movements of two shafts 25 and 26, which will be described later, by the movement thereof. The two shafts 25 and 26 include a second guide groove portion 27 and a third guide groove portion 28 provided in the intermediate rearward extension portion 18b of the link 18 and the lower extension portion 18c below the link 18, respectively. Is to be guided by. In addition, although the guide hole 22 and the 2nd guide groove part 27 of the back extension part 18b of the link 18 are connected, it does not restrict to this.

  Further, the link 18 is provided with a pressing projection 30 that protrudes into the second guide groove 27 and presses one shaft 25 backward or the like in conjunction with the downward movement and rotation of the link 18. ing.

  And as shown in the perspective view showing the section which cut the stapler 1 longitudinally in width center position of Drawing 10, in the rear part of stapler main part 5, accommodation part 31 which accommodates roll-like connecting needle 3 directly, A conveyance path 32 is provided that guides the distal end portion drawn from the roll-shaped portion of the connecting needle 3. A staple cover 33 that covers them is detachably attached to the upper side of the accommodating portion 31 and the conveyance path 32.

  And the front-end | tip part of the connection needle | hook 3 pulled out from the roll-shaped connection needle | hook 3 accommodated in the accommodating part 31 can be conveyed along the conveyance path 32 below (conveyance direction) below the conveyance path 32. A transport mechanism 34 is installed.

  Further, on the front side of the conveying path 32, a cutting mechanism having both functions of a cutting mechanism for cutting the non-metallic needle 2 positioned at the head of the connecting needle 3 and a forming mechanism for forming the cut non-metallic needle 2 into a U-shape. A forming mechanism 35 and a penetrating mechanism 37 that lifts and lowers a pair of left and right punching blades 36 that can hold the non-metallic needle 2 formed in a U-shape by the cutting and forming mechanism 35 to form a through hole p1 in the paper P. is set up.

  The transport mechanism 34 is configured to feed the connecting needle 3 forward by one non-metallic needle 2. Further, the cutting and forming mechanism 35 and the penetration mechanism 37 are configured so as to be within the same dimension as the dimension of the single non-metallic needle 2 in the front-rear direction X.

  The cutting mechanism and the forming mechanism can be configured separately. Moreover, the cutting molding mechanism 35 and the penetration mechanism 37 can integrate the principal part so that it may mention later. The punching blade 36 is made of metal that extends substantially in the vertical direction Z. The punching blade 36 has substantially the same width as the width of the non-metallic needle 2 (length in the short direction), and its surface is in the same direction as the needle legs 2b and 2c of the non-metallic needle 2 (that is, left and right). In a direction substantially perpendicular to the direction Y). The penetration mechanism 37 is provided at the position of the sheet insertion portion 8.

  Under the paper insertion portion 8, the needle legs 2 b and 2 c of the non-metallic needle 2 that is inserted into the through hole p 1 together with the punching blade 36 and protrudes to the back surface side of the paper P are provided along the back surface of the paper P. In addition, a bending mechanism 38 for bending the left and right needle legs 2b, 2c is installed. The two shafts 25 and 26 described above are for driving the transport mechanism 34 and the bending mechanism 38, respectively.

  Further, an opening 41 is provided on the lower surface of the stapler body 5, and the opening 41 is centered on a hinge 42 provided on the rear side when the non-metallic needle 2 is clogged. Further, a lid 43 that can be opened and closed is attached so as to rotate downward and rearward. On the front side of the lid portion 43, a lock portion 44 that holds the lid portion 43 in a closed state is provided. A part of the bending mechanism 38 described above may be separately attached to the inner surface side of the lid portion 43.

  In the stapler 1 using the non-metallic needle 2, when the operation handle 6 is pushed down, the penetration mechanism 37 moves via the link shaft 15, and further, the conveyance mechanism 34 and the link mechanism 18 move together. The bending mechanism 38 moves in conjunction with the penetration mechanism 37.

  At this time, as shown in FIG. 11, the stapler 1 is caused to perform a return operation or the like by four springs.

  The first is a handle return spring 45 for returning the operation handle 6 (returning to the upper standby position), and the second is a crown pressing spring for pressing the crown 2a of the non-metallic needle 2 when binding the paper P. 46 is a pusher return spring 47 provided in the transport mechanism 34, and a fourth is a slider return spring 48 provided in the bending mechanism 38.

  Of these, the first handle return spring 45 has a coil portion 45a fitted on the support shaft 13, one arm portion 45b locked to the stapler body 5, and the other arm portion 45c made of metal. The torsion coil spring is engaged with the handle main body portion 12. The handle return spring 45 urges the metal handle main body 12 in a direction to rotate upward.

  The second crown pressing spring 46 is for adjusting the state of the penetration mechanism 37 and the like in accordance with the thickness of the paper P to be bound, and is a coil spring extending in the vertical direction Z. The third pusher return spring 47 and the fourth slider return spring 48 are coil springs extending in the front-rear direction X, respectively.

  The above is the overall configuration of the stapler.

<Configuration of each part of stapler 1>
Next, features of each part of the stapler 1 of this embodiment will be described in order.

[Operation handle 6]
(Configuration 1) In the stapler 1 of this embodiment, a paper placement portion (paper stand 7) on which the paper P can be placed is provided on one end side (front end side in this embodiment). A penetration mechanism 37 for forming a through hole p1 in the paper P placed on the table 7) and penetrating the non-metallic needle 2 supplied from the other end side (rear end side in this embodiment) into the through hole p1 is provided. A stapler body 5 having,
An operation handle 6 that is connected to the one end side of the stapler body 5 and has a handle operation portion 11 that can be pushed in is provided.
The penetration mechanism 37 is formed so as to penetrate the non-metallic needle 2 by forming a through hole p1 in the paper P placed on the paper placement portion (paper base 7) in conjunction with the pushing operation of the operation handle 6. Configured.
The handle operating portion 11 is formed to extend from the one end side to the other end side of the stapler body 5.

  (Effect 1) As described above, the handle operation portion 11 of the operation handle 6 extends from the front end side (one end side) of the stapler body 5 toward the rear end side (the other end side). Accordingly, the stapler body 5 can receive the reaction force when the operation handle 6 is pushed down (downward) at the other end (rear part) of the stapler body 5.

  (Configuration 2) On the other end side of the stapler main body 5, a housing portion 31 in which the non-metallic needle 2 is housed is provided.

  (Effect 2) A structure (for example, the accommodating part 31 and the conveyance path 32) for supplying the non-metallic needle 2 is provided at the rear part of the stapler body 5. Thereby, the receiving part of the reaction force when pushing in the operation handle 6 (downward) by the accommodating part 31 etc. can be ensured. Therefore, even if the rear portion of the stapler body 5 is not particularly enlarged (to receive the reaction force), the reaction force can be stably received as it is, and the stapler body 5 is reduced in size accordingly. Can be realized.

  On the other hand, for example, when the operation handle 6 extends from the rear end side (the other end side) of the stapler body 5 toward the front end side (the one end side), to prevent the stapler body 5 from overturning. A portion (for example, a V-shaped support leg portion) for receiving a reaction force when the operation handle 6 is pushed (downward) is extended toward the front side of the front portion of the stapler body 5. The stapler main body 5 becomes large. Therefore, extending the operation handle 6 from the front end side (one end side) toward the rear end side (the other end side) of the stapler body 5 is structurally advantageous in reducing the size of the stapler body 5. .

  (Configuration 3) The operation handle 6 is connected to a position of the stapler main body 5 facing the sheet placement portion (sheet table 7) (up and down).

  (Effect 3) The operation handle 6 can be installed compactly with respect to the stapler body 5 by disposing the operation handle 6 at a position overlapping with the sheet placing portion (sheet base 7) of the stapler body 5. Can do.

(Configuration 4) The operation handle 6 is rotatably attached to the stapler body 5.
The handle operation unit 11 is configured to rotate around a support shaft 13 provided in the stapler body 5 when a push operation is performed.

  (Effect 4) By attaching the operation handle 6 to the stapler body 5 so as to be rotatable, the lever principle can be used, and a large output can be obtained with a small input. Thereby, the stapler 1 can be easily operated.

  (Configuration 5) The handle operation unit 11 extends while being inclined to an upward gradient (in this embodiment, rearward upward) from the one end side of the stapler body 5 toward the other end side, and the handle operation unit 11 is pushed in. When operated, the other end side is configured to move up and down (in this embodiment, the rear end portion is lowered and raised) around the support shaft 13 provided in the stapler body 5.

  (Effect 5) With the above configuration, as the operation handle 6 is pushed downward, the length in the front-rear direction X from the support shaft 13 to the link shaft 15 (operation point) (for operating the penetration mechanism 37), and the support Since the length in the front-rear direction X from the shaft 13 to the end (power point) on the side opposite to the support shaft 13 of the operation handle 6 increases, a larger output is obtained around the lower limit position of the operation handle 6. Be able to.

  (Configuration 6) The support shaft 13 that pivotally supports the end portion (the front end portion in this embodiment) located on one end side of the stapler body 5 in the operation handle 6 with respect to the stapler body 5 is provided by the penetration mechanism 37. Is also provided on one end side (the front side in this embodiment).

  (Operation Effect 6) As described above, the support shaft 13 that pivotally supports the front end portion of the operation handle 6 with respect to the stapler body 5 is provided at a position in front of the penetration mechanism 37. As a result, the length from the support shaft 13 to the link shaft 15 (operation point) (for operating the penetration mechanism 37) and the end of the operation handle 6 opposite to the support shaft 13 (power point) from the support shaft 13 (power point). Since the lever ratio determined by the length of can be increased, a larger output can be obtained with a smaller input.

(Configuration 7) An anti-slip member 10 is provided at the lower end of the other end of the stapler body 5 (in this embodiment, the lower end of the rear end).
When the operation handle 6 is tilted down, an end portion (rear end portion in this embodiment) located on the other end side of the stapler body 5 in the operation handle 6 is more than the anti-slip member 10. The length does not protrude to the other end side (the rear end side in this embodiment).

  (Effect 7) By providing the anti-slip member 10 at the lower part (bottom part) of the staple end of the stapler body 5, the stapler body 5 is prevented from moving backward when the operation handle 6 is tilted down. Can do. The anti-slip member 10 can also be provided on the front end side lower part (bottom part) of the stapler body 5. The anti-slip member 10 can be made of a material having a high frictional resistance such as rubber, elastomer or cork. Then, the rear end portion of the operation handle 6 when the operation handle 6 is tilted down does not protrude rearward from the anti-slip member 10 or does not stick out. Thereby, the stapler body 5 can be stabilized when the operation handle 6 is pushed down.

[Conveying path 32]
As shown in FIG. 12 (see also FIG. 13), the transport path 32 described above is provided at the rear part of the stapler body 5 and is configured by a transport path constituting member 51 as shown in FIG. . The conveyance path constituting member 51 is mainly configured by a conveyance path 32 having a substantially horizontal surface, and has a vertical wall portion 52 rising upward at a front end portion of the conveyance path 32, and Side walls 53 rising upward are provided on both sides.

  A needle insertion port 54 for passing the tip of the connecting needle 3 is provided at the lower edge of the vertical wall portion 52 of the conveyance path constituting member 51 (the boundary portion with the front edge of the conveyance path 32). Is provided. The needle insertion port 54 is a horizontally long slit having a width that is substantially the same as or slightly wider than the width of the connecting needle 3 and a vertical dimension that is substantially the same as or slightly higher than the thickness of the connecting needle 3. It is supposed to be in a shape.

  Above the needle passage port 54, a first recess 55 having a narrower width and a higher height than the needle passage port 54 and a second recess 56 having a smaller width and a higher height than the first recess 55. And are provided integrally. Among these, the 1st recessed part 55 shall have a width dimension substantially equal to or larger than the space | interval of the left-right paired hole part 4 of the nonmetallic needle | hook 2 or the connection needle | hook 3. FIG. The second concave portion 56 has a width dimension substantially equal to or larger than the width of the crown 2a of the non-metallic needle 2.

  A pair of left and right slits 57 extending in the front-rear direction are provided on the front side of the transport path 32 at positions that match the pair of left and right holes 4 of the non-metallic needle 2 or the connecting needle 3.

  Furthermore, at a position between the pair of left and right slits 57 on the front side of the transport path 32, a receiving table 58 that protrudes forward in a state flush with the transport path 32 is provided. The pedestal 58 has substantially the same width as the crown 2a, and is inserted into the above-described cutting forming mechanism 35, and when the non-metallic needle 2 is formed into a U shape by the cutting forming mechanism 35. The crown 2a of the non-metallic needle 2 is supported from below. The cradle 58 has an inverted trapezoidal shape when viewed from the front.

[Conveying mechanism 34]
As shown in FIGS. 15 and 16, the transport mechanism 34 described above is provided below the transport path 32, and the transport mechanism 34 is mainly configured by a pusher 61 as shown in FIG. 17. .

  The pusher 61 is provided with a pair of left and right feed claws 62 extending substantially forward on both sides thereof. As shown in FIGS. 18 and 19, the feed claw 62 is passed through the hole 4 (feed hole) of the non-metallic needle 2 or the connecting needle 3 from the lower side to feed the connecting needle 3 forward. is there. The feed claw 62 is elastically deformable in the vertical direction Z. In order to increase the elastic deformation capability of the feed claw 62 in the vertical direction Z, the feed claw 62 extends forward after the base portion once rises upward. The first recess 55 in the needle passage port 54 of the conveyance path constituting member 51 (the vertical wall portion 52) in FIG. 14 has a height for avoiding interference with the tip portion of the feed claw 62. Yes.

  Further, the pusher 61 has a pair of left and right punches of the penetration mechanism 37 formed on the front surface thereof, as shown in order in FIGS. A pressing surface 63 (see FIG. 18) for feeding between the blades 36 is provided. The pressing surface 63 enters and exits the lower side of the receiving table 58 projecting forward from the front portion of the conveyance path 32, and is fitted to the receiving table 58 having a reverse trapezoidal shape when viewed from the front. It has a concave shape that is cut out in an inverted trapezoidal shape (see FIG. 26).

  The pusher 61 is accommodated and installed so as to be movable in the front-rear direction X with respect to the stapler main body 5 and is always provided by the pusher return spring 47 interposed between the rear portion of the pusher 61 and the stapler main body 5. It is urged forward.

  The lower part of the pusher 61 has a shaft hole 64 in which one of the two shafts 25 and 26 described above (the pusher drive shaft (shaft 25), see FIG. 9) is arranged to penetrate in the left-right direction Y. The pusher drive shaft (shaft 25) is guided in the second guide groove 27 provided in the link 18 so that it is moved in the front-rear direction X against the elastic force of the pusher return spring 47. It has become.

  Further, a pair of guide arms 65 extending in the left-right direction Y are integrally provided on both sides of the pusher 61. The guide arm 65 is elastically deformable in the vertical direction Z. The guide arm 65 moves along a guide part 66 (see FIG. 42B) provided at the rear part of the stapler body 5 (position around the second guide groove part 27).

  The guide portion 66 is provided with a locking small convex portion 67 protruding upward, and the guide arm 65 is locked to the rear portion of the locking small convex portion 67 when the operation handle 6 is pushed down. Thus, the pusher 61 is locked in a state of being retracted against the urging force of the pusher return spring 47. The locking small convex portion 67 has an upwardly inclined surface 67a on the front side and a locking surface 67b extending in the vertical direction Z on the rear side.

  As will be described later, when the operation handle 6 is returned, the link 18 is lifted, so that the guide arm 65 is lifted at the lower edge of the second guide groove 27 and the guide arm 65 of the pusher 61 is locked. The lock 61 is released from the locking surface 67 b of the small convex portion 67 and the lock is released, and the pusher 61 is moved forward by the urging force of the pusher return spring 47.

  At this time, the pusher 61 is moved in the front-rear direction X by a distance corresponding to one non-metallic needle 2. As shown in FIG. 15, when the pusher 61 moves forward with the first (leading) non-metallic needle 2 from the front of the connecting needle 3 mounted in the cutting molding mechanism 35, the feed claw 62 is connected to the connecting needle 3. When the pusher 61 is retracted, the feed claw 62 moves to the second hole 4 from the front of the connecting needle 3. As a result, the last one non-metallic needle 2 can be sent to the cutting and forming mechanism 35. The last non-metallic needle 2 is formed in a U shape by the cutting and forming mechanism 35, and then the pair of left and right extraction blades 36 of the penetration mechanism 37 is not the feed claw 62 but the pressing surface 63 of the pusher 61. Sent between. Although not particularly illustrated, a stopper portion is provided on the front side of the penetration mechanism 37 to restrict the non-metallic needle 2 sent by the pusher 61 from jumping forward from the penetration mechanism 37.

[About the staple cover 33]
As shown in FIGS. 23 and 24, the above-described staple cover 33 is detachably attached to the accommodation portion 31 at the rear portion of the stapler body 5 and the upper side of the conveyance path 32.

  A mounting protrusion 33 a is provided on the side surface of the staple cover 33. The attachment protrusion 33a is for locking and fixing the staple cover 33 to the stapler body 5 by entering the attachment hole 16a (see FIG. 9) provided on the side surface 16 of the stapler body 5. . The mounting projection 33a is configured to be able to accurately position the connecting needle 3 by being aligned with the rear edge of the mounting hole 16a (back alignment). Therefore, the mounting hole 16a is provided with a slight clearance in the front-rear direction X for positioning relative to the mounting projection 33a.

  The staple cover 33 is mainly made of a transparent resin having an upper surface and left and right side surfaces as shown in FIG. The staple cover 33 is provided with a needle protecting protrusion 71 protruding forward at the tip side. As shown in FIG. 26, the needle protecting projection 71 is provided above the cradle 58 so as to correspond to the cradle 58 of the transport path 32.

  The needle protecting projection 71 has a width dimension that is substantially the same as or smaller than the crown 2 a of the non-metallic needle 2, and is inserted into the cutting / forming mechanism 35 so that the cutting / forming mechanism 35 uses the non-metallic needle. When forming 2 into a U-shape, the crown 2a of the non-metallic needle 2 is covered and protected from above. The needle protecting protrusion 71 is disposed in the cutting and forming mechanism 35 through the second concave portion 56 on the upper side of the needle passage opening 54 in the vertical wall portion 52 of the conveyance path constituting member 51. The second recess 56 in the needle passage port 54 of the conveyance path constituting member 51 has a height that allows the needle protection projection 71 to be inserted.

  A narrow gap through which the non-metallic needle 2 or the connecting needle 3 passes is provided between the receiving base 58 of the conveyance path constituting member 51 and the needle protection protrusion 71 of the staple cover 33. Upper and lower guide protrusions 71 a (see FIG. 25) that can be fitted into guide grooves provided in the cutting and forming mechanism 35 are integrally provided at the tip of the needle protection protrusion 71.

  Further, as shown in FIGS. 27 and 27A (see also FIG. 30), on the upper front side of the staple cover 33, the connecting needle 3 is lightly pressed from above, and the connecting needle 3 is prevented from returning to the back. For this purpose, a first check claw 72 is provided. In this case, the first check pawl 72 is provided in a pair of left and right so as to be inserted into the left and right holes 4 of the connecting needle 3 from above. The first check pawl 72 is an elastic resin pawl that is integral with the staple cover 33 and independent from each other, and does not apply an excessive pressing force to the upper surface of the connecting needle 3. Yes. The first check pawl 72 has a locking surface 72a extending in the up-down direction Z on the front side, and a claw portion having a front-declining slope 72b on the rear side with respect to the tip of the arm extending forward. It is said that.

  In addition, as shown in FIGS. 28 and 29 (see also FIG. 30), between the pair of left and right first check pawls 72 (position of the central portion in the left-right direction Y of the connecting needle 3), A second check claw 73 that is used by switching to the first check claw 72 when the connection needle 3 is lightly pressed from above and the remaining of the connection needle 3 is reduced is provided. The second check claw 73 is arranged in a state where it protrudes before the first check claw 72. The second check claw 73 is an independent resin elastic claw integrated with the staple cover 33 and does not apply an excessive pressing force to the upper surface of the connecting needle 3. . The second check claw 73 has a locking surface 73a extending in the up-down direction Z on the front side, and a claw portion having a front-declining slope 73b on the rear side with respect to the tip of the arm extending forward. It is said that. In this case, the second check claw 73 is arranged in front of the first check claw 72 by the length of one non-metallic needle 2 in the front-rear direction X.

  Further, as shown in FIG. 31 (see also FIG. 25), the staple cover 33 is attached to the stapler 1 (the stapler main body 5 and the main body cover 9) when attached to the stapler 1 with respect to both side portions of the tip portion. A guide protrusion 76 is provided to be guided along the provided cover guide 75.

  The staple cover 33 is attached to the stapler 1 so as to move from the rear side to the front side (cover attachment direction), and the cover guide 75 and the guide projection 76 are provided to guide the attachment. ing. At this time, the cover guide 75 has a non-linear groove shape (guide groove). That is, the lower portion 77 of the groove-shaped cover guide 75 has a substantially horizontal traverse portion 77a at the front side (rear side) position, and an inclined portion 77b that is lowered forwardly at the back side (front side) of the traverse portion 77a. And a substantially horizontal seating portion 77c on the back side (front side) of the inclined portion 77b.

  Further, the guide projection 76 has a forwardly inclined shape that matches the inclined portion 77 b in a state where the staple cover 33 is attached to the stapler 1. A substantially horizontal seating surface 76a is provided at the tip of the guide projection 76 so as to come into contact (seat) with the seating portion 77c in a line contact state when the staple cover 33 is attached to the stapler 1.

  The upper portion 78 of the groove-shaped cover guide 75 has an introduction taper portion 78a that is lowered forward on the front side (rear side), and is substantially the same as a transverse portion 77a (lower transverse portion) on the back side of the introduction taper portion 78a. It has a parallel transverse portion 78b (upper transverse portion), an inclined portion 78c substantially parallel to the inclined portion 77b on the back side of the transverse portion 78b, and a terminal end substantially parallel to the seating portion 77c on the back side of the inclined portion 78c. It has a portion 78d.

  Then, as shown in FIG. 31 (a), the gap between the entry-side traverse portion 77a and the introduction taper portion 78a starts from a wide state so that the staple cover 33 can be inserted obliquely with the front cover lowered. It is made into the gradually reduced groove part which becomes narrow gradually toward the front side.

  Further, between the intermediate traversing portion 77a and the traversing portion 78b, the staple cover 33 is placed in the horizontal state as shown in FIG. 31 (b) from the obliquely forwardly lowered state as shown in FIG. 31 (a). In order not to be inserted unless the staple cover 33 is changed, it is a transverse groove portion having a spacing 79a that is narrower than the height in the vertical direction Z of the guide projection 76 when the staple cover 33 is lowered to the front. Note that the entrance side of the cover guide 75 (the gradually shrinking groove portion) is configured such that the height dimension is reduced so as to be the interval 79a.

  Further, as shown in FIG. 31 (b), between the inclined portion 77b and the inclined portion 78c at the back, the substantially horizontal staple cover 33 is dropped down along the inclined portion 77b as it is. It is a downwardly inclined groove portion having an interval 79b substantially the same as the thickness of the guide protrusion 76 itself.

  Finally, as shown in FIG. 31 (c), the guide protrusion 76 can be substantially regulated with respect to the vertical direction Z with the staple cover 33 attached between the back seating portion 77c and the terminal portion 78d. As described above, the holding groove portions having the same spacing 79c as the height dimension in the vertical direction Z of the inclined guide projection 76 when the staple cover 33 is in the horizontal state are formed.

  As described above, when the staple cover 33 is seated so as to be dropped down on the back side, when the staple cover 33 is attached to the stapler 1, for example, it protrudes from the needle protection protrusion 71 at the tip of the staple cover 33. The guide protrusion 71a, the locking surface 72a of the first check claw 72, and the locking surface 73a of the second check claw 73 rub the upper surface of the connecting needle 3 forward and are connected by the guide protrusion 71a. It is possible to prevent problems such as forcibly moving the needle 3 forward.

[Regarding the positioning structure of the connecting needle 3]
When the connecting needle 3 is cut into each non-metallic needle 2 by the cutting mechanism (or the cutting molding mechanism 35), it is necessary to determine the cutting position with high accuracy. Therefore, it is very important to accurately position the connecting needle 3.

  Therefore, for example, using a relatively strong elastic biasing means such as a metal spring, the connecting needle 3 on the conveying path 32 is always pressed from the upper side, and the connecting needle 3 is moved in the conveying direction. The front end portion of the connecting needle 3 is urged toward the front side so as to be constantly pressed against an abutting portion (for example, the punching blade 36) provided in the back position of the conveyance path 32 (the cutting mechanism). Thus, it is conceivable to position the connecting needle 3 (pre-alignment).

  However, when pre-adjusting in this way, an excessive pressing force is required for pressing from above by the elastic biasing means so that the connecting needle 3 is not retracted when the transport mechanism 34 that moves back and forth moves backward. And the problem that the connecting needle 3 (the portion pressed against the abutting portion (such as the cutting blade 36)) is likely to be damaged due to continuous application of a pressing force in the transport direction (front side). There arises a problem that resistance when the connecting needle 3 is conveyed to the cutting mechanism is increased.

  Therefore, in this embodiment, the connecting needle 3 is positioned as follows.

(Configuration 1) As described above, the stapler 1 of this embodiment includes a cutting mechanism that cuts the connecting needles 3 each formed by connecting a plurality of flat non-metallic needles 2, and the connecting needle 3. And a transport mechanism 34 for transporting the ink to the cutting mechanism via the transport path 32.
A positioning portion 81 that can position the connecting needle 3 when the connecting needle 3 moved by the transport operation by the transport mechanism 34 hits the transport path 32 is installed.

  Here, the cutting mechanism is the above-described cutting molding mechanism 35. The middle of the conveyance path 32 may be anywhere within the range of the conveyance path 32. The transport operation by the transport mechanism 34 can widely include an operation of sending the connecting needle 3 and a preliminary operation (for example, a temporary stop operation or a return operation) accompanying the operation of sending the connecting needle 3. The positioning unit 81 may be any device as long as the connecting needle 3 can be positioned only by applying the connecting needle 3 by using the movement of the connecting needle 3 by the transport mechanism 34.

  (Function 1) In the above configuration, the positioning needle 81 is provided in the middle of the transport path 32, and the connecting needle 3 moved by the transport operation of the transport mechanism 34 hits the positioning member 81 so that the connecting needle 3 is positioned. I made it. With this positioning unit 81, the connecting needle 3 can be positioned using the transport operation by the transport mechanism 34 as it is, and it is not necessary to provide a specially configured positioning mechanism, and the configuration of the positioning unit 81 can be reduced. It can be simple. Therefore, it is possible to accurately position the connecting needle 3 without imposing a burden on the connecting needle 3.

(Configuration 2) Specifically, as shown in FIG. 27, the positioning portion 81 is positioned at a position on the rear side in the transport direction with respect to the distal end portion of the connecting needle 3 in the transport direction.
The positioning portion 81 may be configured to position the connecting needle 3 by pressing the connecting needle 3 in the direction toward the rear side in the transport direction.

  Here, the conveyance direction is the front side in the front-rear direction X. The direction toward the rear side in the transport direction is the rear side in the front-rear direction X. The position on the rear side in the transport direction with respect to the distal end portion of the connecting needle 3 is the position of the second and subsequent non-metallic needles 2 from the front of the connecting needle 3. In this case, the position of the third non-metallic needle 2 from the front of the connecting needle 3 is set. For the positioning portion 81, the first check claw 72 (the front locking surface 72a facing in the vertical direction Z) of the staple cover 33 can be used.

  Note that the second check pawl 73 of the staple cover 33 in FIG. 28 (the front locking surface 73a facing in the vertical direction Z) is also used as the positioning portion 81 when the remaining two connecting needles 3 are provided. The second non-metallic needle 2 of the connecting needle 3 can be positioned. Incidentally, as shown in FIG. 29, when the number of connecting needles 3 is one, there is no need to perform cutting, so positioning is not necessary.

  (Effect 2) In the above configuration, a positioning portion 81 is provided in the middle of the transport path 32 to perform positioning at a position on the rear side in the transport direction with respect to the distal end portion of the connecting needle 3. The connecting needle 3 was positioned by the temporary pressing in the direction toward the rear side (return direction) (immediately before the cutting of the connecting needle 3) (backward alignment). This eliminates the need for specially providing a relatively strong elastic biasing means such as a metal spring to continuously press the connecting needle 3 from the upper side. Since the pressing force is no longer applied, the connecting needle 3 is less likely to be scratched, and resistance when the connecting needle 3 is transported to the cutting mechanism can be eliminated, and the non-metallic needle 2 made of a softer material can be obtained. It can be transported.

  (Configuration 3) The positioning portion 81 can be positioned by being applied to the edge of the hole 4 provided in the non-metallic needle 2 or the connecting needle 3 that faces toward the rear side in the transport direction.

  Here, the hole 4 is used as a positioning hole. The edge of the hole 4 facing the rear side in the conveying direction is brought into contact with the front locking surface 72a of the positioning portion 81 (first check pawl 72) for positioning. The positioning hole can be shared with the feed hole. However, dedicated positioning holes and feed holes may be provided separately.

  In the case of this embodiment, the first hole 4 and the second hole 4 from the front of the connecting needle 3 are used as feed holes, and the third hole 4 from the front is used as a positioning hole. The first check pawl 72 and the feed pawl 62 are prevented from interfering with each other by properly using the holes 4 provided at the same position in the left-right direction Y.

  (Effect 3) With the above configuration, the connecting needle 3 can be positioned reliably with a simple configuration. Further, since the connecting needle 3 is provided with a hole 4 such as a feed hole in advance, the hole 4 can be used for positioning the connecting needle 3 as it is. In addition, about the hole part 4, you may provide the thing only for positioning separately from a feed hole.

  (Configuration 4) Alternatively, the positioning portion 81 may be positioned by being applied to the edges of the both ends of the non-metallic needle 2 that are flatly extended toward the rear side in the transport direction.

  Here, the edge part which turned to the back side of the conveyance direction of the both ends of the nonmetallic needle 2 can be made into the taper-shaped slit part 3b provided in the rear edge part of the both ends of the nonmetallic needle 2 ( In this case, the hole 4 in FIG. 27 is replaced with the slit 3b). The slit portion 3b at the rear edge portion of the non-metallic needle 2 is abutted against the front locking surface 72a of the positioning portion 81 and positioned. In addition, although the positioning part 81 in this case is not specifically illustrated, for example, the first check pawl 72 or the like may be provided at the position of the slit part 3b.

  (Effect 4) With the above configuration, the connecting needle 3 can be reliably positioned with a simple configuration. Further, tapered slit portions 3b for facilitating insertion of the needle legs 2b, 2c of the non-metallic needle 2 bent in a U-shape into the through holes p1 formed in the paper P are provided at both ends of the connecting needle 3. Since the front edge portion and the rear edge portion are provided in advance, the slit portion 3b at the rear edge portion can be used for positioning the connecting needle 3 as it is.

  (Configuration 5) When the transport mechanism 34 cuts the connection needle 3 by the cutting mechanism (cutting molding mechanism 35), the connection needle 3 is temporarily attached in a direction toward the rear side in the transport direction of the connection needle 3. The positioning portion 81 is provided with a return portion 82 that presses the connecting needle 3.

  Here, the return portion 82 can be the feed claw 62 of the pusher 61 in the transport mechanism 34. The feed claw 62 has a locking surface 62a extending in the up-down direction Z on the front side, and a claw portion having a rear-declining slope 62b on the rear side with respect to the distal end portion of the arm extending forward.

  (Effect 5) As described above, the feed claw 62 of the pusher 61 is retracted from the temporarily advanced state when the connecting needle 3 is fed. At this time, the hole 4 (or the slit 3b). Hereinafter, the inclined surface 62b is displaced rearward with respect to the hole portion 4), whereby the claw portion is guided downward along the inclined surface 62b, and the feed claw 62 is elastically deformed downward so that the claw portion at the tip is Pull out from the first hole 4 from the front. Then, it is retracted along the back surface of the connecting needle 3 and is passed through the second hole 4. At this time, as shown in FIG. 42D, it is locked in the retracted state (by the guide arm 65 of the pusher 61 being locked to the locking small convex portion 67 of the stapler body 5 (the guide portion 66)). .

  Thus, when the pusher 61 starts to be retracted, the slope 62b of the feed claw 62 pushes the rear edge of the front hole 4 rearward, so that the feed claw 62 can be removed from the front hole 4 only. For a short time, the connecting needle 3 is urged so as to be slightly retracted to the rear side. Then, by the slight movement of the connecting needle 3 at this time, the positioning can be performed by pressing the connecting needle 3 against the positioning portion 81. This positioning makes it possible to reduce the burden on the connecting needle 3 and to accurately cut the connecting needle 3 by the cutting mechanism.

  Therefore, it is only necessary to perform positioning temporarily only at the time of cutting by the cutting mechanism, the mechanical load required for positioning is reduced, and the preliminary operation (retracting operation) for the transport mechanism 34 to transport the connecting needle 3 is performed. It becomes possible to perform positioning using. Since the feed claw 62 of the transport mechanism 34 can be used as it is for the return unit 82, the configuration is simple.

  (Configuration 6) When the transport mechanism 34 urges the non-metallic needle 2 or the connecting needle 3 in the direction toward the rear side in the transport direction, the positioning unit 81 moves the non-metallic needle 2 or the connecting needle 3 in the transport direction. Locking surfaces 72a and 73a are provided to be applied to the edges facing the rear side.

  (Operation Effect 6) As described above, the positioning portion 81 has the above-described locking surfaces 72a and 73a, so that the transport mechanism 34 moves the non-metallic needle 2 or the connecting needle 3 toward the rear side in the transport direction. When energized, the edge of the non-metallic needle 2 or the connecting needle 3 facing the rear side in the conveying direction can be reliably applied to the locking surfaces 72a and 73a for positioning.

(Configuration 7) Alternatively, as shown in FIG. 27B (FIG. 27C), the positioning portion 81 is positioned at a position on the rear side in the transport direction with respect to the distal end portion in the transport direction of the connecting needle 3.
The positioning portion 81 may be configured to position the connecting needle 3 by pressing the connecting needle 3 in the direction toward the front side in the transport direction.

  Here, the position on the rear side in the transport direction with respect to the front end portion of the connecting needle 3 is the position of the second and subsequent non-metallic needles 2 from the front of the connecting needle 3. In this case, the position of the third non-metallic needle 2 from the front of the connecting needle 3 is set. As the positioning portion 81, for example, a member provided with a rear locking surface 72 c facing in the vertical direction Z with respect to the first check claw 72 of the staple cover 33 can be used. As the positioning portion 81, the first check claw 72 of the staple cover 33 may be used, or a component similar to the first check claw 72 may be provided separately.

  (Effect 7) In the above-described configuration, a positioning unit 81 that performs positioning at a position on the rear side in the transport direction with respect to the tip of the connecting needle 3 is provided in the middle of the transport path 32, and the transport mechanism 34 for the positioning unit 81 is provided. The connecting needle 3 is positioned (preliminary alignment) by temporary pressing (immediately before the end of feeding) in the direction (feeding direction) toward the front side of the conveying direction of the connecting needle 3. After the connection needle 3 has been fed, the feeding operation by the transport mechanism 34 is temporarily stopped until the next feeding is performed, and the movement of the coupling needle 3 toward the front side is also stopped. This eliminates the need for specially providing a relatively strong elastic biasing means such as a metal spring to continuously press the connecting needle 3 from the upper side. Since the pressing force is no longer applied, the connecting needle 3 is less likely to be scratched, and resistance when the connecting needle 3 is transported to the cutting mechanism can be eliminated, and the non-metallic needle 2 made of a softer material can be obtained. It can be transported.

  (Configuration 8) The positioning portion 81 may be positioned by being applied to an edge portion of the hole 4 provided in the non-metallic needle 2 or the connecting needle 3 facing the front side in the transport direction.

  Here, the hole 4 is used as a positioning hole. The edge portion of the hole 4 facing the front side in the conveying direction is brought into contact with the rear locking surface 72c of the positioning portion 81 (first check pawl 72) for positioning. The positioning hole can be shared with the feed hole. However, dedicated positioning holes and feed holes may be provided separately.

  In the case of this embodiment, the first hole 4 and the second hole 4 from the front of the connecting needle 3 are used as feed holes, and the third hole 4 from the front is used as a positioning hole. The first check pawl 72 and the feed pawl 62 are prevented from interfering with each other by properly using the holes 4 provided at the same position in the left-right direction Y.

  (Effect 8) With the above configuration, the connecting needle 3 can be reliably positioned with a simple configuration. Further, since the connecting needle 3 is provided with a hole 4 such as a feed hole in advance, the hole 4 can be used for positioning the connecting needle 3 as it is. In addition, about the hole part 4, you may provide the thing only for positioning separately from a feed hole.

  (Structure 9) Alternatively, the positioning part 81 may be positioned by being applied to the edge of the both ends of the non-metallic needle 2 in a flat state extending toward the front side in the transport direction.

  Here, the edge part which faced the front side of the conveyance direction of the both ends of the nonmetallic needle 2 can be made into the taper-shaped slit part 3b provided in the front edge part of the both ends of the nonmetallic needle 2 (this. In this case, the hole 4 in FIG. 27B is replaced with the slit 3b). The slit portion 3b at the front edge portion of the non-metallic needle 2 is abutted against the locking surface 72c on the rear side of the positioning portion 81 and positioned. In addition, although the positioning part 81 in this case is not specifically illustrated, for example, the first check pawl 72 or the like may be provided at the position of the slit part 3b.

  (Effect 9) With the above configuration, the connecting needle 3 can be reliably positioned with a simple configuration. Further, tapered slit portions 3b for facilitating insertion of the needle legs 2b, 2c of the non-metallic needle 2 bent in a U-shape into the through holes p1 formed in the paper P are provided at both ends of the connecting needle 3. Since the front edge portion and the rear edge portion are provided in advance, the slit portion 3b of the front edge portion can be used for positioning the connecting needle 3 as it is.

  (Configuration 10) When the conveying mechanism 34 feeds the connecting needle 3 by the conveying mechanism 34, the conveying needle 34 biases the connecting needle 3 toward the front side in the conveying direction of the connecting needle 3 and presses the connecting needle 3 against the positioning portion 81. A pressing unit 83 is provided.

  Here, the pressing portion 83 can be the feed claw 62 of the pusher 61 in the transport mechanism 34. In this case, the feeding claw 62 is provided with a claw portion having a rear rising slope 62c on the front side and a rear falling slope 62b on the rear side with respect to the distal end portion of the arm extending forward. The front side of the claw portion of the feed claw 62 may be a locking surface 62a extending in the vertical direction. However, by making the front side of the claw portion a rear-upward inclined surface 62c, a slight margin is secured at the time of front alignment. At the same time, excessive pressing can be mitigated. In addition, the feed claw 62 may shift the position of the already-positioned connecting needle 3 to the rear side by touching the connecting needle 3 (the hole 4 or the rear edge portion of the slit portion 3b) when retreating. In order to prevent this, it is preferable to pull it down once and then retract it (see the arrow in FIG. 27C).

  (Effect 10) As described above, the feed claw 62 of the pusher 61 moves forward when the connecting needle 3 is fed. At this time, the hole 4 (or the slit 3b. Hereinafter, the hole 4 will be described. ) Is pushed forward by the front slope 62c, and the feed claw 62 urges the connecting needle 3 forward. The movement of the connecting needle 3 at this time makes it possible to perform positioning by pressing the connecting needle 3 against the positioning portion 81. This positioning makes it possible to reduce the burden on the connecting needle 3 and to accurately cut the connecting needle 3 by the cutting mechanism.

  Therefore, it is only necessary to perform positioning only when the connecting needle 3 is fed by the transport mechanism 34, and the mechanical burden required for positioning is reduced. Since it is possible to use the feed claw 62 of the transport mechanism 34 for the pressing portion 83, the configuration is simple.

  (Configuration 11) The positioning unit 81 faces the front side in the transport direction of the non-metallic needle 2 or the connecting needle 3 when the transport mechanism 34 urges the non-metallic needle 2 or the connection needle 3 to the front side in the transport direction. It has a locking surface 72c that contacts the edge.

  (Effect 11) As described above, when the positioning portion 81 has the locking surface 72c described above, when the transport mechanism 34 biases the non-metallic needle 2 or the connecting needle 3 to the front side in the transport direction, The edge of the non-metallic needle 2 or the connecting needle 3 facing the front side in the conveying direction can be reliably applied to the locking surface 72c for positioning. The positioning portion 81 is temporarily retracted from the non-metallic needle 2 or the connecting needle 3 so as not to obstruct the feeding while the connecting needle 3 is being sent. The positioning portion 81 may be provided with a rear-facing slope 72d on the front side.

[About the self-holding structure of the connecting needle 3]
In order to be able to accurately cut the connecting needle 3 to which the non-metallic needle 2 is connected by the cutting mechanism, it is necessary to correctly attach the connecting needle 3 to the stapler body 5. At this time, if the connecting needle 3 wound in a roll shape is used, it becomes difficult to correctly attach the connecting needle 3 to the stapler body 5 due to the influence of the winding gusset attached to the connecting needle 3. Even if the connecting needle 3 is correctly attached, the connecting needle 3 may be displaced from the correct position on the stapler body 5 due to the winding gusset after being attached. When the connecting needle 3 is displaced from the correct position in this manner, the connecting needle 3 cannot be accurately cut by the cutting mechanism.

  Therefore, for example, it is conceivable that the connecting needle 3 is indirectly attached to the stapler body 5 by accommodating the roll-like connecting needle 3 in the cartridge and attaching the cartridge to the stapler 1. In this way, by using the cartridge (smaller and easier to handle as compared with the stapler 1) as a medium, the connecting needle 3 can be easily attached to the cartridge, and the connecting needle 3 is accurately attached to the stapler body 5 via the cartridge. The connecting needle 3 can be made difficult to shift.

  However, when a cartridge is used, the handling of the connecting needle 3 due to the attachment and detachment of the cartridge is increased, and a cartridge is required and a mechanism for attaching and detaching the cartridge to the stapler 1 is required. Therefore, the structure of the stapler 1 is complicated, the number of parts is increased, the stapler 1 is increased in size, and the cost is increased.

  Therefore, in this embodiment, the connecting needle 3 can be directly and accurately attached to the stapler body 5 as follows.

(Configuration 1) As described above, the stapler 1 of this embodiment includes a cutting mechanism that cuts the connecting needles 3 each formed by connecting a plurality of flat non-metallic needles 2, and the connecting needle 3. And a transport mechanism 34 for transporting the ink to the cutting mechanism via the transport path 32.
And as shown in FIG. 32 (-FIG. 35), the needle holding part 84 which can hold | maintain the said connection needle 3 is provided in the front side in the conveyance direction of the said conveyance path 32. As shown in FIG.
As shown in FIG. 33, the needle holding portion 84 includes a contact surface 85 to which the connecting needle 3 is applied, a regulating member 87 for restricting the position of the connecting needle 3 from one surface side, and the other surface of the connecting needle 3. On the side, the disengagement restricting portion 88 is disposed so as to face the restricting member 87 with the connecting needle 3 being sandwiched between the restricting member 87 and the front and rear in the transport direction.
In this embodiment, as an example, the one surface side is the conveyance path constituting member 51 and the regulating member 87 side with respect to the connecting needle 3, that is, the lower surface side of the connecting needle 3, and the other surface side is the conveying path structure. Opposite to the member 51, for example, the staple cover 33 or the needle holding portion 84 side, that is, the upper surface side of the connecting needle 3 is used. However, the above may be reversed.

  Here, the needle holding portion 84 holds a portion on the distal end side of the connecting needle 3, and the needle holding portion 84 is connected to the stapler main body 5 so as to be provided with respect to positions on both sides of the connecting needle 3. This is preferable in that the needle 3 is securely held by itself and the connecting needle 3 can be easily detached from the stapler body 5 when necessary. The self-holding means that the tip end portion of the connecting needle 3 or the vicinity thereof can be held with respect to the stapler main body 5 only by the needle holding portion 84 without using another configuration such as a cartridge.

  The contact surface 85 is such that when the tip of the connecting needle 3 is inserted into the transport path 32, the tip side of the connecting needle 3, for example, the leading edge of the first or second non-metallic needle 2 is abutted lightly. If it is good. For example, as shown in FIGS. 34 and 35, the punching blade 36 of the penetration mechanism 37 can be used for the contact surface 85. Moreover, the contact surface 85 can be provided with respect to the conveyance path | route structural member 51, as shown to FIGS. 36-36C, for example.

  Specifically, for example, in FIG. 36, the contact surface 85 is applied to the position of the cut connecting portion 3a at the distal end edge of the connecting needle 3 (the first non-metallic needle 2). In FIG. 36A, the contact surface 85 is made to abut on the inclined slit portion 3b at the tip edge of the connecting needle 3 (the first non-metallic needle 2). In FIG. 36B, the contact surface 85 is applied to the stepped notch 3d provided at the slit 3b at the tip edge of the connecting needle 3 (the first non-metallic needle 2). . Furthermore, in FIG. 36C, the contact surface 85 is applied to the slit portion 3b (inside) (inside the second non-metallic needle 2) in the vicinity of the front portion of the connecting needle 3. In each case, the contact surface 85 has a shape that matches the shape of the portion to which the connecting needle 3 is applied. In the case of FIG. 36C, the contact surface 85 is a protrusion protruding upward from the upper surface of the conveyance path 32. The projecting portion serving as the contact surface 85 can be installed so as to protrude and be accommodated with respect to the upper surface of the conveyance path 32.

  Or the contact surface 85 can be provided with respect to the stapler main body 5 as shown in FIG. 37, for example.

  The restricting member 87 is provided to restrict the position of the connecting needle 3 from one surface side. The restricting member 87 is, for example, a holding member that contacts the connecting needle 3 from one side and holds the position of the connecting needle 3, or a detent member that can suppress or prevent the connecting needle 3 from returning to the rear side in the transport direction. Can be configured.

  Specifically, as shown in FIG. 33, the regulating member 87 can be held and detented by engaging the engaging portion 86 provided on the connecting needle 3 from one side of the connecting needle 3. It can be set as a simple engaging member. As the engaging portion 86, the hole portion 4 of the connecting needle 3, the slit portions 3 b on both sides, or the like can be used. As the engaging member, the feed claw 62 of the transport mechanism 34 or the like can be used.

  33A and 33B, the restricting member 87 can include a rolling member 87a that rolls along one side of the connecting needle 3. The rolling member 87a is pivotally supported by an upper end portion of an arm 87b provided on the lower surface side of the connecting needle 3 so as to be able to roll via a rotating shaft 87c extending in the left-right direction Y. At this time, by making the rolling member 87a a friction wheel made of rubber or the like, or by making it a one-way roller that only allows rotation in the direction in which the connecting needle 3 is fed to the front side, it is easy to perform position holding and detent. be able to. When the regulating member 87 is a rolling member 87a, the rolling member 87a is provided at a position where it does not interfere with the feed claw 62 and the left-right direction Y as shown in FIG. 33A, or as shown in FIG. The claw 62 is installed to be shifted in the transport direction (rear side) with respect to the rolling member 87a. The rolling member 87a is a driven wheel that is rotated by the movement of the connecting needle 3 toward the front side in the conveying direction, but can also be a driving wheel that is driven by a driving mechanism. When the rolling member 87a is a drive wheel, the feeding claw 62 can be eliminated.

  In this case, the regulating member 87 is provided on the lower surface side of the connecting needle 3. The disengagement restricting portion 88 is provided on the upper surface side of the connecting needle 3. However, the positional relationship between the engaging member 87 and the disengagement restricting portion 88 may be upside down. The disengagement restricting portion 88 is preferably installed in a state in which the position thereof is displaced from at least one or both of the restricting member 87 and the front or rear side. The detachment restricting portion 88 will be described later.

  (Operation Effect 1) According to the above configuration, the leading end of the roll-shaped connecting needle 3 accommodated in the accommodating portion 31 is pulled out, and the leading end of the connecting needle 3 is slid along the conveying path 32. The restriction member 87 on the one surface side of the needle holding portion 84 provided on the front side of the conveyance path 32 and the like only by inserting the tip edge of the connecting needle 3 lightly against the contact surface 85. With the surface-side disengagement restricting portion 88, the tip end portion of the connecting needle 3 or the vicinity thereof can be directly self-held with respect to the stapler body 5 without using auxiliary parts.

  At this time, simply by inserting the tip of the connecting needle 3 into the back of the transport path 32 with one finger, it can be easily and securely connected without any deviation in the transport direction (front-rear direction X) without relying on visual inspection. The needle 3 can be attached. In addition, the contact surface 85 of the needle holding portion 84 can prevent occurrence of buckling of the connecting needle 3 due to excessive insertion of the connecting needle 3.

  As a result, it is possible to eliminate mounting mistakes such as misalignment in the transport direction due to winding of the connecting needle 3 wound in a roll shape, and to eliminate the trouble of redoing, and to accurately attach the connecting needle 3 to the stapler 1. For this purpose, a cartridge (for indirectly storing and holding the roll-shaped connecting needle 3) is provided as a separate part, a space for storing the cartridge in the stapler 1 is prepared, and the cartridge is attached to and detached from the stapler 1. Since there is no need to provide a mechanism for the operation, the handling of the connecting needle 3 is reduced, and the structure of the stapler 1 is greatly simplified to reduce the size of the stapler 1, reduce the number of parts, and reduce the cost. Can be achieved.

  (Configuration 2) The disengagement restricting portion 88 includes a first restricting portion 91 installed at the position of the leading non-metallic needle 2 of the connecting needle 3.

  Here, since the leading non-metallic needle 2 of the connecting needle 3 is inserted into the cutting and forming mechanism 35, the first restricting portion 91 is provided inside the needle pressing plate 92 of the cutting and forming mechanism 35 shown in FIG. It can be provided for the side.

  Moreover, the 1st control part 91 can be provided with respect to the conveyance path structural member 51, for example, as shown in FIG.

  (Effect 2) According to the above configuration, the position of the leading non-metallic needle 2 of the connecting needle 3 can be reliably regulated and held by the first regulating portion 91 so as not to come off. The first restricting portion 91 is effective for preventing the connecting needle 3 from buckling after the leading edge of the connecting needle 3 (the leading non-metallic needle 2) hits the contact surface 85. Further, since the first restricting portion 91 is provided, the tip of the connecting needle 3 comes into contact with the contact surface 85 in a state where it is difficult to buckle, so that the response when the contact is made (the contact surface in the buckled state) Therefore, it is possible to clearly feel that the distal end portion of the connecting needle 3 has come off and is securely held by the restricting portion 88.

(Configuration 3) The disengagement restricting portion 88 may include a second restricting portion 93 installed at the position of the second and subsequent non-metallic needles 2 of the connecting needle 3.
The restricting member 87 is installed at a position between the first restricting portion 91 and the second restricting portion 93 with respect to the conveying direction of the connecting needle 3.

  Here, the second restricting portion 93 is an upper edge portion (located on both sides of the first concave portion 55 and the second concave portion 56) of the needle passage port 54 provided in the vertical wall portion 52 of the conveyance path constituting member 51. It can be.

  In this case, in FIG. 33, the engaging member as the restricting member 87 is the claw part of the feed claw 62 fitted to the first hole part 4 from the front, and the first restricting part 91 is the first hole part. The second restricting portion 93 is located slightly behind the first hole 4 so as to be located slightly in front of the first hole 4.

  In this case, as shown in FIG. 35, the first restricting portion 91 and the second restricting portion 93 are installed so as to be located outside the restricting member 87 (the pawl portion of the feed pawl 62) with respect to the left-right direction Y. ing. Only one of the first restricting portion 91 and the second restricting portion 93 can be structurally provided.

  In addition, the 2nd control part 93 can be provided with respect to the conveyance path structure member 51, for example, as shown in FIG. Further, as shown in FIG. 33C, for example, the second restricting portion 93 is formed in the left-right direction Y at the lower end portion of the arm 93b that extends downward from the upper side provided on the other surface side (for example, the upper surface side) of the connecting needle 3. It is possible to have a rolling member 93a that is pivotally supported via a rotating shaft 93c that extends in the direction. The rolling member 93 a can roll along the other surface side of the connecting needle 3. At this time, the rolling member 93a is made of a friction wheel made of rubber or the like, or the one-way roller that can only rotate in the direction in which the connecting needle 3 is fed to the front side in the conveying direction is used, thereby maintaining the position and detent. It is possible to make it easy to prevent the detachment. The rolling member 93a is a driven wheel that is rotated by the movement of the connecting needle 3 toward the front side in the conveying direction. However, the rolling member 93a may be a driving wheel that is driven by a driving mechanism.

  (Effect 3) According to the said structure, while the 2nd control part 93 can control and hold | maintain so that the position of the 2nd and subsequent non-metallic needles 2 of the connecting needle 3 may be controlled reliably and will not remove | deviate. The upper first restricting portion 91, the second restricting portion 93, and the lower restricting member 87 can hold the tip end portion of the connecting needle 3 or the vicinity thereof in a zigzag shape from above and below. Become. As a result, a higher self-holding force can be obtained, so that it is possible to make it difficult to remove the attached connecting needle 3 from the transport path 32. The second restricting portion 93 is effective for preventing the positional deviation due to the winding gusset with respect to the connecting needle 3 with the winding gusset.

(Configuration 4) As shown in FIG. 33, the disengagement restricting portion 88 is spaced from the other surface of the connecting needle 3 with gaps 95 and 96.
The restricting member 87 is an engaging member that engages with the engaging portion 86 provided on the connecting needle 3 from one surface side of the connecting needle 3.
And the front-end | tip part of an engaging member is made to protrude to the other surface side of the said connection needle 3 larger than the said clearance gaps 95 and 96 through the said engaging part 86 (projection amount 97> clearance gaps 95 and 96). .

  (Operation Effect 4) The disengagement restricting portion 88 is spaced from the other surface of the connecting needle 3 with gaps 95 and 96. Thereby, with respect to the connecting needle 3 having no curl, the tip of the connecting needle 3 or the vicinity thereof is regulated so as not to come off while preventing the direct contact of the disengagement restricting portion 88 to the connecting needle 3. It becomes possible to hold. In addition, with respect to the connecting needle 3 with the winding gusset, the disengagement restricting portion 88 can directly and lightly contact the connecting needle 3 to hold the tip of the connecting needle 3.

  As a result, the connection needle 3 can be prevented from being damaged, and the conveyance resistance to the connection needle 3 can be reduced.

  Further, when the restricting member 87 is an engaging member, the distal end portion of the engaging member is projected to the other surface side of the connecting needle 3 through the engaging portion 86 so as to be larger than the gaps 95 and 96 described above. It was. This makes it difficult for the tip of the connecting needle 3 that has passed through the narrow gaps 95 and 96 between the disengagement restricting portion 88 and the other surface of the connecting needle 3 to get over the restricting member 87. While being surely regulated and held so as not to come off, it is possible to effectively prevent the connecting needle 3 from coming off the transport path 32.

  The feeding claw 62 as the engaging member (regulating member 87) has a rear-lowering inclined surface 62b on the rear side of the claw portion at the front end and a locking surface 62a in the vertical direction Z on the front side, thereby When the tip of the connecting needle 3 is inserted from the side, it is possible to easily get over the slope 62b, and when it is pulled back, it is difficult to get over the locking surface 62a.

  However, when the connecting needle 3 is removed, as shown in FIG. 38, it is necessary (stronger than the force acting on the connecting needle 3 when the connecting needle 3 is naturally separated from the conveying path 32 by the winding gusset). The connecting needle 3 is pulled later with the force of Then, the needle holding portions 84 are provided at the positions on both sides of the connecting needle 3, and the vertical wall portion 52 is positioned between the left and right second restricting portions 93 (needle passage ports 54) of the needle holding portion 84. Since the one concave portion 55 and the second concave portion 56 are provided, the connecting needle 3 can be bent in a medium-high state in the out-of-plane direction (upward). Therefore, the needle holding portion is utilized by using the bending of the connecting needle 3. It is possible to intentionally remove the connecting needle 3 from 84.

  Hereinafter, the main part of the stapler 1 will be described with reference to FIGS. 39 to 52.

[Cut forming mechanism 35]
As shown in FIG. 39, the cutting and forming mechanism 35 described above includes a pair of left and right cutting blades 101 (cutting mechanism) for cutting the non-metallic needle 2 from the connecting needle 3 one by one, and a non-metallic needle in a flat state. A pair of left and right forming members 102 (forming mechanism) for forming 2 into a U shape, and needle legs 2b and 2c of a non-metallic needle 2 formed in a U shape so as to maintain the U-shaped forming state are held. A needle pressing plate 92 (needle pressing mechanism) is provided. Further, the cradle 58 (see FIG. 38) of the conveyance path constituting member 51 described above also functions as a support portion (fixed portion) that supports the non-metallic needle 2 at the time of forming, and is one of the components of the cutting and forming mechanism 35. ing. In addition, as long as it can support so that the nonmetallic needle | hook 2 may not move at the time of shaping | molding, a support part will not be limited to a structure like the receiving stand 58. FIG.

  The cutting blade 101 and the molding member 102 are integrally provided with respect to the driver main body 100 constituting the penetration mechanism 37. The driver main body 100 and the needle pressing plate 92 can move relative to the cradle 58 in the vertical direction Z. In this embodiment, the cradle 58 is fixed so as not to move in the vertical direction Z, and the driver main body 100 and the needle pressing plate 92 are configured to move in the vertical direction Z. However, the present invention is not limited to this. The receiving base 58 may move in the vertical direction Z with respect to the driver main body 100 and the needle pressing plate 92. Further, the cutting blade 101 and the forming member 102 are accommodated in the needle pressing plate 92 so as to be relatively movable in the vertical direction Z within the needle pressing plate 92. In this embodiment, the molding member 102 is provided integrally with the driver main body 100 (penetration mechanism 37), but the present application is not limited to this. The molding member 102 may be provided separately from the driver main body 100 as long as the molding operation can be performed in synchronization with the penetration operation of the penetration mechanism 37.

  The driver body 100 has a shaft hole 100a extending in the left-right direction Y, and the above-described link shaft 15 is disposed through the shaft hole 100a. The link shaft 15 is inserted and arranged in the guide groove 17 extending in the vertical direction Z provided in the first guide groove portion 21 of the link 18 (see FIG. 9) and the side surface 16 (side wall) of the stapler body 5. Yes. The driver body 100 is moved in the vertical direction Z by the link shaft 15 being guided along the guide groove 17.

  The cutting blade 101 is an example of a cutting blade that cuts the connecting portion 3a of the connecting needle 3, and an inclined blade portion 101a is provided at the lower end. Each cutting blade 101 is attached to a pair of attachment portions 103 projecting on the back side (rear side) of the driver main body 100 in a state where the inclined blade portions 101a face each other.

  Each cutting blade 101 is inserted into the hole 4 in which each blade portion 101a is inclined outward and the inner side surface in the vicinity of the blade edge is located inside the connection portion 3a so that the connecting portion 3a can be cut smoothly. In such an arrangement, the blades 101a are attached to the mounting portion 103 so that the length of each blade portion 101a is longer than that of the connecting portion 3a. In addition, each cutting blade 101 is provided with a notch 101b by cutting out the outer side of the blade 101a, so that when the cutting blade 101 moves in the vertical direction Z relative to the needle pressing plate 92, the blade 101 a is prevented from hitting the components of the needle presser plate 92.

  Each forming member 102 is provided at a position on the inner side of each cutting blade 101, and is formed to project inwardly from an arm portion 102 a extending downward from the wall surface of each attachment portion 103 and from a tip (lower end) of the arm portion 102 a. Projecting portion 102b. The arm portion 102 a has a free end at the tip, and can be elastically deformed in the left-right direction Y with a base end portion (fixed end) fixed to the attachment portion 103 as a base point.

  In order to bend the needle legs 2b and 2c of the non-metallic needle 2 placed on the cradle 58, each arm portion 102a has at least a needle leg height formed from the upper end to the base end portion of the protruding portion 102b. The height (height) is equal to or greater than the length (height) of 2b and 2c. Each arm portion 102 a has a length (depth) in the front-rear direction X that is equal to or longer than the length in the short direction of the non-metallic needle 2.

  Further, the width of the cradle 58 is formed to be substantially the same as the inner width of the crown 2a so that the needle legs 2b and 2c can be held between the cradle 58 and the inner wall surface of each arm portion 102a. The distance between the pair of arm portions 102a is formed to be approximately the same as the outer width of the crown 2a. Further, the interval between the pair of protrusions 102 b is formed slightly narrower than the outer width of the cradle 58. With this configuration, when the protrusion 102b is lowered, the protrusion 102b hits the cradle 58 and is elastically deformed outward, and the needle legs 2b and 2c are pressed against the cradle 58 while being pressed downward. Therefore, the non-metallic needle 2 can be reliably folded into a U shape and the molding operation can be performed stably. In addition, after bending, the pair of needle legs 2b and 2c can be held by the outer surface of the cradle 58 and the inner surfaces of the pair of arm portions 102a to maintain the molded state.

  The needle presser plate 92 is formed in a rectangular frame shape, and a pair of restricting protrusions 104 for guiding the movement of the needle presser plate 92 in the vertical direction Z and restricting the amount of movement are provided on the outer surface thereof. The pair of restricting protrusions 104 are inserted into a pair of restricting grooves 29 provided adjacent to the guide groove 17 on the side surface 16 (side wall) of the stapler body 5 (see FIG. 42A and the like). The needle pressing plate 92 is moved in the vertical direction Z by the regulation protrusion 104 being guided along the regulation groove 29. The restriction groove 29 is a long hole extending in the vertical direction Z. Therefore, when the restricting protrusion 104 hits the upper end of the restricting groove 29, the raising of the needle pressing plate 92 is stopped. This stop position is the uppermost point of the needle presser plate 92. Further, when the restricting protrusion 104 hits the lower end of the restricting groove 29, the lowering of the needle pressing plate 92 is stopped. This stop position is the lowest point of the needle presser plate 92. Furthermore, since the regulation protrusion 104 is formed in an ellipse shape that is long in the vertical direction Z, the tilt in the front-rear direction X is suppressed, and the regulation projection 104 can smoothly move in the vertical direction Z without causing wobble or the like. Yes.

  A pair of first restricting portions 91 for restricting the position of the tip of the non-metallic needle 2 in the vertical direction Z are provided on the inner side surface of the needle pressing plate 92. A pair of needle leg pressing portions 105 that suppress the opening of the pair of needle legs 2b, 2c of the molded non-metallic needle 2 and maintain the molded state are provided below the first restricting portion 91. Yes. The needle pressing portion 105 is configured to suppress the opening of the needle tip by guiding the needle tip inward by a tapered surface 105a protruding inward. The pair of needle pressing portions 105 is formed with a length that can hold an insertion interval for inserting a pair of needle legs 2b, 2c formed in a U-shape. Further, the formation height of each needle pressing portion 105 is such that when the needle pressing plate 92 is lowered and reaches the lowest point, the upper end of the needle pressing portion 105 is the needle leg 2b of the molded non-metallic needle 2. It is formed at a height that does not interfere with the tip of 2c. That is, the needle pressing portion 105 is configured to retract to a position where it does not contact the bent needle legs 2b and 2c when the non-metallic needle 2 is formed in a U shape while the forming member 102 is lowered. ing.

  On the other hand, when the molding is completed and the needle pressing plate 92 is raised together with the molding member 102, the arm portion 102a holds the needle legs 2b and 2c (part of them) and the needle leg at the tip of the needle pressing section 105. The dimensions are adjusted so that 2b and 2c can be picked up and held. Accordingly, it is possible to suppress the opening of the needle legs 2b and 2c when the needle legs 2b and 2c are delivered from the arm part 102a to the needle pressing part 105, and to perform delivery (needle pick-up) stably.

  In addition, a pair of elastic pieces 106 (engaging portions) that abut against the shoulder portions 103 a of the mounting portion 103 provided in the driver main body 100 are provided at the approximate center in the vertical direction Z on the inner surface of the needle pressing plate 92. . Each elastic piece 106 is formed of a cantilever extending in the downward direction, has a free end at its tip, and is elastically deformed in the left-right direction Y with the fixed end as a base point. At the tip of each elastic piece 106, a protruding portion 106a that protrudes inward is provided. With this configuration, when the driver main body 100 rises with respect to the needle pressing plate 92, the lower end of the elastic piece 106 abuts against and engages with the shoulder 103a, and the needle pressing plate 92 rises together with the driver main body 100. ing. When the needle presser plate 92 rises to the uppermost point, the shoulder 103a spreads the elastic piece 106 outward, and over the elastic piece 106, the mutual engagement is released, and only the driver main body 100 rises. Yes.

  In addition, when the driver main body 100 descends with respect to the needle presser plate 92 positioned at the lowest point, the attachment portion 103 of the driver main body 100 pushes and expands the pair of elastic pieces 106 outward, whereby a pair of elastic members Only the driver main body 100 descends over the piece 106.

  <Operation example of the cutting molding mechanism 35>

  Next, an example of the operation of the cutting / forming mechanism 35 will be described with reference to the operation diagrams of the cutting / forming mechanism 35 in FIGS. 40A and 40B and the operation diagrams of the link 18 in FIGS. 42A to 42F. 40A and 40B are views of the cutting and forming mechanism 35 observed from the back side, and states of an operation process of the cutting and forming mechanism 35 are shown as a state A to a state F. FIG. 40A and 40B, only the cutting blade 101, the forming member 102, the needle pressing plate 92, and the link shaft 15 are illustrated for ease of explanation. 42A to 42F show states (positions) of the link shaft 15 when the cutting and forming mechanism is in the states A to F (F-1, F-2). C indicates a state at the time of the push-down operation, and D to F indicate states at the time of return. Further, the detailed parts of the components are also referred to in FIG.

  At the standby position (initial position) before the operation handle 6 is pushed down, the leading non-metallic needle 2 of the connecting needle 3 is flat before cutting on the cradle 58 as in the state A (standby) of FIG. 40A. Arranged in a state. Further, the pusher 61 (see FIG. 19) is urged toward the receiving base 58 (forward) by the pusher return spring 47. Therefore, as shown in FIG. 42A, the tip end of the guide arm 65 of the pusher 61 is positioned in front of the locking small convex portion 67 provided on the guide portion 66 of the stapler body 5. Thereby, the tip of the pusher 61, which is the pressing surface 63, is in a state of protruding into the needle pressing plate 92 (see FIG. 26). In addition, between the pair of punching blades 36 (hereinafter referred to as 36a and 36b when the left and right are distinguished), the non-metal needle 2 that has been previously cut and molded is mounted (see FIG. 22).

  When the operator depresses the operation handle 6, the link shaft 15 is lowered by this depressing operation, and the driver main body 100 and the link 18 are depressed. The link 18 descends while pressing the shaft 25 rearward by the pushing protrusion 30. Then, as shown in FIG. 42B, the lowering of the link 18 stops when the upper edge of the guide hole 22 abuts against the guide protrusion 23. At this time, the tip of the guide arm 65 of the pusher 61 gets over the inclined surface 67a of the small convex portion 67 for locking, and the pusher 61 moves backward, so that the pusher 61 is detached from the needle pressing plate 92, and the needle pressing plate 92 is You can descend. At the time of the lowering, the first restricting portion 91 provided on the inner surface of the needle pressing plate 92 abuts on the connecting needle 3. The first restricting portion 91 slightly elastically deforms both ends of the connecting needle 3. However, since it is formed with a protruding amount that can be passed, it is possible to prevent the both ends of the connecting needle 3 from being broken.

  Further, when the link shaft 15 is lowered, both the driver main body 100 and the needle pressing plate 92 are lowered. When the needle presser plate 92 reaches the lowest point by this lowering and stops descending, only the driver main body 100 connected to the link shaft 15 is lowered, and the cutting blade 101 of the cutting blade 101 is lowered as shown in state B (cutting) in FIG. 40A. The connecting portion 3 a of the connecting needle 3 is cut by the blade portion 101 a (cutting operation), and one non-metallic needle 2 is separated from the connecting needle 3. For reference, the plan view of the connecting needle 3 to be cut is also shown in the state B. Since the connecting portion 3a is cut from the inside to the outside by the blade portion 101a inclined outward, it is cut in a stable state. After the cutting, the driver main body 100 is further lowered, so that, following the cutting operation, the distal ends (lower ends) of the arm portions 102a of the pair of molded members 102 reach the non-metallic needle 2, and the arm portion 102a becomes the non-metallic needle. The second needle legs 2b and 2c are bent downward (start of molding operation).

  On the other hand, since the lowering of the link 18 is restricted by the guide protrusion 23, the link 18 moves rearward by the lowering of the link shaft 15. Thereafter, as shown in FIG. 42C, the rearward extending portion 18b hits the restricting protrusion 24, and the retreat of the link 18 is stopped. As the link shaft 15 is further lowered, the link 18 starts to rotate backward (rotation counterclockwise in the figure) with the guide protrusion 23 as a fulcrum, and is bent by the third guide groove 28. The 38 slide members 122 start to retract (see FIG. 42D).

  As shown in FIG. 42E, when the link shaft 15 is lowered to the lowest point and the slide member 122 is in the most retracted state, the cut non-metallic needle 2 is formed as in the state C (forming) of FIG. 40A. The driver main body 100 has reached the lowest point in a state where the above is completed. The needle legs 2 b and 2 c of the molded non-metallic needle 2 are held by the arm portion 102 a of the molded member 102.

  Next, by releasing the pressing of the operating handle 6, the operating handle 6 moves in the return direction to the initial position by the urging force of the handle return spring 45 (return), and the link shaft 15 starts to rise. In conjunction with these operations, the link 18 rotates in the return direction (clockwise rotation in the figure) with the guide protrusion 23 as a fulcrum, and the slide member 122 moves (advances) in the return direction. To rise. The driver main body 100 is raised, and the shoulder portion 103 a of the attachment portion 103 abuts against the elastic piece 106 of the needle pressing plate 92, whereby the needle pressing plate 92 is raised together with the driver main body 100. In this ascending process, with the arm portion 102a holding the needle legs 2b and 2c, the needle legs 2b and 2c are inserted between the pair of needle holding portions 105 of the needle holding plate 92, and the needle points are picked up (received). Hold). The state D (needle leg picking) in FIG. 40A shows a state immediately before picking up the needle tip, and the needle tips of the needle legs 2b and 2c are slightly inwardly closed by the protrusion 102b of the molding member 102. The needle tip can be easily picked up by the needle pressing portion 105. However, since the tapered surface 105a of the needle pressing portion 105 guides the needle tip inward, the needle tip can be reliably secured even if the needle leg 2b 'is slightly opened outward, as indicated by the phantom line in the diagram of the state D. Can be picked up.

  Therefore, the needle legs 2b and 2c can be smoothly transferred from the forming member 102 to the needle pressing portion 105. Further, the needle legs 2b and 2c can be held by the needle holder 105 only by raising the needle holder 105, and elastic deformation of the needle legs 2b and 2c is suppressed, and the load on the needle legs 2b and 2c is reduced. Can be reduced, and more stable molding becomes possible.

  Thereafter, as shown in a state E (needle pressing plate uppermost point 1) in FIG. 40B, when the needle pressing plate 92 reaches the uppermost point, the raising of the needle pressing plate 92 stops. As shown in the state E, the needle legs 2b and 2c of the non-metallic needle 2 come out of the arm portion 102a, but are held by a pair of needle pressing portions 105. As the link shaft 15 subsequently rises, the shoulder portion 103a of the attachment portion 103 pushes the pair of elastic pieces 106 outward, so that the pair of elastic pieces 106 is overcome and the mutual engagement is released. As a result, the driver main body 100 is detached from the needle presser plate 92 and released from the locked state at the lower part of the needle presser plate 92, so that only the driver main body 100 is raised (state F-1 in FIG. See point 2)).

  In a state where the engagement between the driver main body 100 and the needle pressing plate 92 is released, the needle pressing plate 92 can freely fall in the regulation groove 29. Even in this case, as shown in a state F-2 (needle pressing plate dropping) in FIG.

  While the rotation of the link 18 is stopped in a state where the slide member 122 is completely restored, the guide arm 65 of the pusher 61 is engaged with the locking surface 67b of the locking small convex portion 67 as shown in FIG. 42F. Since they are in the locked state, the forward movement of the pusher 61 is still restricted. The link 18 and the driver main body 100 are raised by the subsequent rise of the link shaft 15, and the non-metallic needle 2 formed with the driver main body 100 is raised until it is received between the pair of extraction blades 36 a and 36 b. The guide arm 65 is pushed up by the lower edge portion of the second guide groove portion 27. As a result, the guide arm 65 is disengaged from the locking small convex portion 67, the pusher 61 is advanced by the urging force of the pusher return spring 47, and the non-metallic needle 2 is interposed between the pair of extraction blades 36a, 36b by the pressing surface 63. Sent. Further, the flat connecting needle 3 to be used next is sent onto the cradle 58, and the cutting and forming mechanism 35 returns to the standby state (state A '(needle pushing) in FIG. 40B). The link 18 and the link shaft 15 are also returned to the initial positions (see FIG. 42A).

  [About penetration mechanism 37]

  As shown in FIGS. 39, 43, and 44, the penetration mechanism 37 described above forms a through hole p1 (see FIG. 3) in the paper P, and penetrates the needle legs 2b and 2c of the non-metallic needle 2 in the paper P. A pair of left and right punching blades 36a and 36b to be moved and a crown pressing portion 110 for holding the crown 2a of the non-metallic needle 2 are provided. The extraction blades 36 a and 36 b and the crown pressing portion 110 are provided in the driver main body 100 and are moved in the vertical direction Z together with the driver main body 100 by the link shaft 15.

  The pair of punching blades 36 a and 36 b are attached to the lower side of the driver main body 100 in parallel in the left-right direction Y through a predetermined interval that can accommodate and hold the nonmetallic needle 2. The pair of extraction blades 36a and 36b extends downward from the driver main body 100, and V-shaped blade portions 111a and 111b for cutting the paper P are provided at the lower ends thereof. Each punching blade 36a, 36b has a shape bent in a substantially crank shape (or inclined step shape) when viewed from the front or rear, and has an upper end (base end portion) attached to the driver main body 100 and a lower end. The blade portions 111a and 111b are not aligned with the vertical direction Z, and the blade portions 111a and 111b on the lower end side are offset inward with respect to the upper end (base end portion).

  More specifically, the distance between the pair of extraction blades 36a and 36b is the inner width of the crown 2a, that is, the pair of leg portions 2b and 2c within a predetermined length from the tip side where the blade portions 111a and 111b are provided. The first through portions 112a and 112b that first penetrate the paper P are configured to be equal to or slightly narrower than the inner width of the first paper. The outer width of the crown 2a, that is, the outer width of the pair of leg portions 2b and 2c is equal to or slightly wider from the upper side to the base end side portion of the first through portions 112a and 112b. The parts 113a and 113b are configured. The “equivalent” in the present specification does not need to be exactly the same size, and may be “substantially equivalent”, and includes cases where the dimensions are slightly larger or smaller within a common sense range. This means that some dimensional errors are acceptable.

  The first through portions 112a and 112b and the second through portions 113a and 113b are bent in a substantially crank shape at a predetermined intermediate position that becomes a boundary between the first through portions 112a and 112b and the second through portions 113a and 113b. An inclined step is formed between the two. In this step portion, the distance between the pair of extraction blades 36a and 36b is formed so as to gradually spread from the first through portions 112a and 112b toward the second through portions 113a and 113b. The hole expansion portions 114a and 114b are formed to expand the through hole p1 formed by 112b outward.

  The non-metallic needle 2 formed in a U-shape can be held between the pair of second penetrating portions 113a and 113b arranged to face each other. Further, the stepped portion at the boundary between the second penetrating portions 113a and 113b and the hole expanding portions 114a and 114b supports the needle legs 2b and 2c of the non-metallic needle 2 held by the second penetrating portions 113a and 113b. Needle leg support portions 115a and 115b are provided.

  Each punching blade 36a, 36b has first and second bending members 120a, 120b (see FIG. 45) as a pair of bending members of a bending mechanism 38 that bends the needle legs 2b, 2c penetrating the paper P inward. ) Are formed through the second penetrating portions 113a and 113b and the needle leg supporting portions 115a and 115b. The first and second bending members 120a and 120b (see FIG. 45) are not limited to the holes 116a and 116b as long as the first and second bending members 120a and 120b (see FIG. 45) can be moved in and out. It may be a notched portion in which a part of the portions 115a and 115b is notched.

  The crown pressing part 110 is provided between the pair of punching blades 36a and 36b. The crown pressing portion 110 is configured to be movable in the vertical direction Z with respect to the driver main body 100, and is attached to the driver main body 100 while being urged downward by the crown pressing spring 46.

  In the stapler 1 of the present embodiment, as described above, when the penetrating mechanism 37 is lowered to a predetermined position, the bending mechanism 38 is operated, and the bending of the needle legs 2b and 2c is started. Therefore, in order to be able to bend the needle legs 2b and 2c at a predetermined timing without being affected by the difference in the number (thickness) of the paper P, the difference in the number (thickness) of the paper P is used as the crown pressing portion. Absorbing is performed by movement of 110 in the vertical direction Z so that the penetration mechanism 37 can be lowered to a predetermined position.

  Further, the penetration mechanism 37 includes a metal cutting blade guide 117 (see FIG. 45) that guides the cutting blades 36 a and 36 b penetrating the paper P at the lower portion of the stapler body 5. As described above, the extraction blades 36a and 36b have the base end portion on the fixed side of the driver main body 100 and the blade portions 111a and 111b at the distal end thereof not on the same straight line with respect to the vertical direction Z. When the blade portions 111a and 111b of 36b pass through the paper P, a force is applied so that the punching blades 36a and 36b are flowed inward (the punching blades 36a and 36b are inclined inward). Further, since the gap between the pair of hole expanding portions 114a and 114b is gradually widened, the punching blades 36a and 36b are flowed inward even when the hole expanding portions 114a and 114b pass while expanding the through hole p1 (inside Force acts in the direction of

  A punching guide 117 is provided to prevent the flow in the inner direction of the punching blades 36a and 36b and to prevent the flow in the left-right direction. During the penetrating operation, the punching blades 36a and 36b descend along the side surface of the punching blade guide 117 having a downward U-shape, thereby preventing the flow (deformation) of the punching blades 36a and 36b in the inward direction. Thus, the sheet P can be smoothly penetrated by the punching blades 36a and 36b.

  As shown in FIG. 41, the punching blade guide 117 includes a first guide portion 117a and a second guide portion 117b having a lower formation height than the first guide portion 117a. In addition, a chamfered portion 117c is provided by chamfering the upper edge corner portion in front of the first guide portion 117a (on the second guide portion 107b side) in a taper shape or a curved shape that is lowered forward. In the present embodiment, a step is formed by notching the front side of the plate member formed in a U-shape through an interval equivalent to the interval between the first through portions 112a and 112b, and the side not notched is the first. The first and second guide portions 117a and 117b are integrally formed as a single component by using one guide portion 117a and the notched lower side as the second guide portion 117b. With this configuration, the number of parts of the stapler 1 can be reduced, the configuration can be simplified, the size can be reduced, and the first and second guide portions 117a and 117b can be integrally operated.

  It should be noted that the configuration of the extraction blade guide 117 is not limited to the form in which the first guide portion 117a and the second guide portion 117b are configured as a single component as in the first embodiment. The guide portions 117a and 117b may be formed separately. Alternatively, the first and second guide portions 117a and 117b that are separately formed may operate synchronously, and the inner surfaces of the punching blades 36a and 36b in the vicinity of the cutting edge are always guided according to the amount of penetration. If possible continuous surfaces are formed, each may operate independently.

  Since the first guide portion 117a prevents the sheet P from being bent during the penetration operation, the height of the top portion of the first guide portion 117a is equal to that of the sheet table 7 on which the sheet P is placed (flat). Alternatively, it is slightly lower than the paper base 7. Thereby, the load when the pair of punching blades 36a and 36b penetrate the paper P can be reduced, and the penetration operation is smoothly performed so that the through hole p1 does not become wider than necessary. In addition, with such a formation height, immediately after the punching blades 36a and 36b penetrate the paper P and the inner surface in the vicinity of the blade edge protrudes from the paper P, the first guide portion 117a immediately The side surfaces can be guided, and the effect of preventing the flow in the inner and left / right directions of the punching blades 36a and 36b can be further improved.

  On the other hand, when the pair of needle legs 2b and 2c of the non-metallic needle 2 penetrates the paper P together with the punching blades 36a and 36b, the second guide portion 117b has a height that can guide the tips of the punching blades 36a and 36b. In this case, the space between the second guide portion 117b and the stapler body 5 is set to a height at which the bending mechanism 38 can perform the bending operation. More preferably, the height is such that it becomes lower than the position of the tip of the needle legs 2b, 2c when the punching blades 36a, 36b are lowered to the lowest end, or the first and second bending members 120a of the bending mechanism 38. , 120b is set to a height that does not block the holes 116a and 116 through which the doors enter and exit. However, when the specification is such that folding of the needle legs 2b, 2c is started before the punching blades 36a, 36b reach the lowermost end, the second guide portion 117b is positioned more than the position of the tip of the needle legs 2b, 2c before bending. May be formed slightly higher.

  Further, the extraction blade guide 117 is provided on a slide member 122 described later of the bending mechanism 38. In conjunction with the reciprocating motion of the slide member 122, the first guide portion 117a and the second guide portion 117b are switched according to the penetration length of the extraction blades 36a and 36b to the paper P, and the extraction blades 36a and 36b. It is arranged between. When the through hole p1 is formed by the punching blades 36a and 36b (when the penetrating length is relatively short), the first guide portion 117a is arranged between the pair of punching blades 36a and 36b, and the punching blades 36a and 36b. The tip (at least the blade portions 111a and 111b, more preferably up to the first through portions 112a and 112b) is guided.

  On the other hand, when the pair of punching blades 36a and 36b are further lowered, the paper P penetrates deeply (the penetration length becomes relatively long), and the pair of needle legs 2b and 2c of the non-metallic needle 2 penetrates the paper P. To do. When the needle legs 2b and 2c penetrating the paper P are bent by the bending mechanism 38, the first guide portion 117a is retracted from between the pair of extraction blades 36a and 36b, and is more than the first guide portion 117a. The lower second guide portion 117b is located. The leading ends of the punching blades 36a and 36b are guided by the second guide portion 117b, and the first and second bending members 120a are controlled while suppressing the blurring of the punching blade 6b in the left-right direction Y and the inward deformation. , 120b does not interfere with the bending operation of the needle legs 2b, 2c. The punching blades 36a and 36b are formed with a continuous surface that can always guide the inner surface near the cutting edge according to the amount of penetration of the punching blades 36a and 36b when penetrating the paper P and when the non-metallic needle 2 is bent. By doing so, the punching blades 36a and 36b can reliably move relative to each other between the first guide portion 117a and the second guide portion 117b.

  Further, in the present embodiment, the upper edge of the second guide portion 117b is horizontal on the rear side, but the front side is gradually lowered in height and inclined forward and downward. That is, when the pair of cutting blades 36a and 36b descend as the slide member 122 moves backward, the front side (the vicinity of the blade edge) relatively passes through the side surface of the second guide portion 117b. It is inclined along. Due to this inclination, even when the pair of extraction blades 36a, 36b are lowered to the lowermost end, the holes 116a, 36a, 36b are reliably guided while the tips of the pair of extraction blades 36a, 36b are reliably guided by the both side walls of the second guide portion 117b. 116b can be prevented from being blocked. Therefore, the holes 116a and 116b of the first and second bending members 120a and 120b can be smoothly moved in and out.

  <Operation example of penetration mechanism 37>

  Next, as an example of the operation of the penetration mechanism 37, refer to the explanatory view of the driver main body in FIGS. 43 and 44, the operation diagram of the penetration mechanism 37 in FIGS. 40A and 40B, and the operation diagram of the extraction blade guide 117 in FIG. While explaining. In the state of the standby position before the penetration operation (see state A in FIG. 40A), as shown in FIGS. 43 (b) and 43 (e), the cutting and forming mechanism 35 feeds between the pair of punching blades 36a and 36b. The U-shaped non-metallic needle 2 is held. At this time, the crown 2a is pressed by the crown pressing part 110, and the needle legs 2b and 2c are supported by the needle leg support parts 115a and 115b.

  When the link shaft 15 is lowered by the operation of pushing down the operation handle 6, the driver main body 100 provided with the penetration mechanism 37 is lowered (see FIG. 41A). Then, when the extraction blades 36a and 36b reach the paper P placed on the paper base 7, a through hole p1 is formed in the paper P by the blade portions 111a and 111b (see the dotted line portion in the state B in FIG. 40A). First, the first through portions 112a and 112b pass through the through hole p1. At this time, since the first guide portion 117a of the punching blade guide 117 is disposed between the punching blades 36a and 36b, the first penetrating portions 112a and 112b are prevented from being inclined inwardly and smoothly penetrated. Is possible.

  When the penetrating mechanism 37 is further lowered, the hole expanding portions 114a and 114b penetrate the sheet P while expanding the through hole p1 outward. When the penetrating mechanism 37 is further lowered, the second penetrating portions 113a and 113b penetrate the through hole p1, and a pair of needle legs of the non-metallic needle 2 held inside the second penetrating portions 113a and 113b. 2b and 2c penetrate the through hole p1 (see FIG. 41B).

  When the crown 2a reaches the paper P (see state C in FIG. 40A), the crown pressing portion 110 presses the crown 2a against the paper P, so that the crown 2a and the paper P can be brought into close contact with each other. Further, even when the number of sheets P is large, the driver main body while compressing the crown pressing spring 46 in a state where the crown pressing section 110 presses the crown 2a against the sheet P and stops as shown in FIGS. Only 100 goes down. Therefore, the punching blades 36a and 36b can be lowered to a predetermined position without being affected by the number of sheets P. Therefore, the subsequent bending operation of the needle legs 2b and 2c by the bending mechanism 38 can be performed smoothly at a predetermined timing.

  At the timing of this bending operation, as shown in FIG. 41 (c), the extraction blade guide 117 is retracted in conjunction with the retraction of the slide member 122, and the second guide portion 117b is interposed between the extraction blades 36a and 36b. Is placed. Therefore, the bending operation of the needle legs 2b and 2c by the bending mechanism 38 can be performed smoothly. Note that the force acting on the punching blades 36a and 36b coincides with the second penetrating portions 113a and 113b, and the punching blades 36a and 36b are unlikely to be tilted inward. Therefore, at the timing when the second penetrating portions 113a and 113b penetrate the through hole p1, the deformation can be suppressed without guiding the punching blades 36a and 36b. However, in this embodiment, the leading ends of the extraction blades 36a and 36b are guided by the second guide portion 117b even when the second penetration portions 113a and 113b penetrate the paper P. Therefore, the inside of the punching blades 36a and 36b is prevented, and the holes 116a and 116b of the punching blades 36a and 36b are inserted into and out of the holes 116a and 116b during the bending operation. It is possible to suppress the blurring in the left-right direction Y and the like and perform the penetration operation and the subsequent bending operation more smoothly.

  After the sheets P are bound, the movement of the slide member 122 and the extraction blade guide 117 is stopped as shown in FIG. Thereafter, when the pressing of the operation handle 6 is released, the driver main body 100 ascends together with the link shaft 15, so that the extraction blades 36 a and 36 b come out of the through hole p 1, and the penetration mechanism 37 returns to the standby position. Along with this, the slide member 122 also returns to its original position (advances), and the first guide portion 117a also moves between the extraction blades 36a and 36b. In this embodiment, since the chamfered portion 117c is provided in front of the first guide portion 117a, the needle overlapped below the paper P at the chamfered portion 117c when the first guide portion 117a is returned. It moves while scooping up the legs 2b and 2c. Therefore, the return operation of the first guide portion 117a below the needle legs 2b and 2c can be performed more smoothly, and the turning up of the needle legs 2b and 2c can be suppressed.

  Next, a modified example of the punching blade guide 117 will be described with reference to FIGS. 41A and 41B. 41A and 41B are operation diagrams of a modified example of the punching blade guide 117. FIG. 41A and 41B has the same basic configuration as the extraction blade guide 117 of the present embodiment shown in FIG. 41 except that the shape of the second guide portion 117b is different. 1 guide part 117a and a second guide part 117b having a lower formation height than the first guide part 117a.

  In the modification shown in FIG. 41A, the upper edge 117d of the second guide portion 117b is linearly inclined at two different inclination angles from the front end of the first guide portion 117a toward the front, The side view has a V shape with an inner angle being an obtuse angle.

  In the modification shown in FIG. 41B, the upper edge 117d of the second guide portion 117b is inclined in a curve from the front end of the first guide portion 117a toward the front, and the front side is linearly continuous with this curve. It has an inclined shape. Note that the entire upper edge 117d of the second guide portion 117b may be curvedly inclined. In this modification, a chamfered portion 117c is provided in front of the first guide portion 117a.

  As shown in the operation diagrams of FIGS. 41A and 41B, the punching blade guide 117 of such a modified example operates in the same manner as the embodiment of FIG. 41, and is similar to the embodiment. Actions and effects can be obtained. Further, the upper edge 117d of the second guide portion 117b is inclined linearly or curvedly, so that the second guide portion 117b is moved down the path of the blade portions 111a and 111b of the extraction blades 36a and 36b. It can be set as the shape inclined along. Therefore, the punching blade guide 117 of each modification can guide the punching blades 36a and 36b more smoothly and prevent the deformation without hindering the bending operation by the bending mechanism 38.

  [About the bending mechanism 38]

  As shown in FIGS. 45 to 48 and the like, the bending mechanism 38 described above is configured to bend the first needle leg (the right needle leg in this embodiment) 2b of the non-metallic needle 2 penetrating the paper P. A member 120a, a second bending member 120b for bending the other leg (left needle leg in this embodiment) 2c, a bonding member 121 for bonding one needle leg 2b and the other needle leg 2c, A slide member 122 as a drive member that drives the first and second bending members 120a and 120b and the bonding member 121 in a predetermined sequence, and the first and second bending members provided in the stapler body 5. It includes a pair of guide surfaces 123a and 123b (see FIGS. 47 and 50A) that are inclined surfaces that guide 120a and 120b in the bending direction.

  The first and second bending members 120a and 120b are engaged with bending protrusions 124a and 124b that are formed to protrude upward and fold the needle legs 2b and 2c inward, and a pair of guide surfaces 123a and 123b of the stapler body 5. First and second inclined surfaces 125a and 125b to be combined, and first and second operation step portions 126a and 126b with which the slide member 122 is engaged are provided. The first bending member 120a and the second bending member 120b are controlled to move in the vertical direction Z and the horizontal direction Y by the forward and backward movement of the slide member 122 in the front-rear direction X.

  As the first and second inclined surfaces 125a and 125b are guided along the pair of guide surfaces 123a and 123b along with the movement in the vertical direction Z and the horizontal direction Y, the first and second bending members are provided. 120a and 120b move in an oblique direction while expanding or contracting (adjacent and separating) each other. Accordingly, the first and second bent protrusions 124a and 124b enter and exit the holes 116a and 116b of the pair of extraction blades 36a and 36b penetrating the paper P.

  The first bending member 120a and the second bending member 120b are integrally connected by a connecting spring 127 having a U shape in a plan view, and constitute a Ω-shaped bending unit 128 in a plan view. In the present embodiment, the first and second bending members 120a and 120b and the connecting spring 127 are integrally formed of resin to form a bending unit 128. The bending unit 128 is stapled in a state where the connecting spring 127 is compressed. It is attached to the inner surface of the main body 5. Therefore, the shape stability and flexibility are excellent, the storage property of the bending unit 128 to the stapler body 5 is improved, and the first and second bending members 120a and 12b can be freely moved in the vertical and horizontal directions. it can.

  The connecting spring 127 urges the first and second bending members 120a and 120b to move outward, that is, the direction in which the first and second bending members 120a and 120b are pushed down (return direction). Therefore, when the first and second bending members 120a and 120b are pushed down by the return operation of the slide member 122 and return to the initial position, the restoring force of the connecting spring 127 assists the return operation and suppresses catching and the like. The return operation can be performed smoothly, and the operability during the return operation can be improved. In contrast to the above, the connecting spring 127 is attached in the direction in which the first and second bending members 120a and 120b are moved inward, that is, in the direction in which the first and second bending members 120a and 120b are pushed up. The operability during the bending operation can be improved.

  When the bending unit 128 is attached to the stapler body 5, as shown in FIG. 47, the attachment protrusion 129 protruding from the connection spring 127 is engaged with the hole 130 provided in front of the stapler body 5, Mounting protrusions 131a and 131b (see FIG. 45) protruding from the first and second bending members 120a and 120b, respectively, were recessed with respect to the stapler body 5 in correspondence with the inclination of the guide surfaces 123a and 123b. Engage with the elongated holes 132a and 132b. This prevents the folding unit 128 from being accidentally dropped from the stapler body 5, and allows the first and second bending members 120a and 120b to move in the vertical and horizontal directions (oblique direction).

  The connecting spring 127 is not limited to a U-shape in plan view. If the first bending member 120a and the second bending member 120b can be urged in the direction of pushing down (or the direction of pushing up), the connecting spring 127 may have a V shape, a W shape, an I shape, or the like in plan view. May be.

  As shown in FIG. 50A and the like, the pair of guide surfaces 123a and 123b for guiding the first and second bending members 120a and 120b has a lower end located on the outermost side in the left-right direction Y and gradually toward the upper end. Consists of a surface that slopes inward. That is, the pair of guide surfaces 123a and 123b are formed in a C shape when viewed from the front. Note that the guide surfaces 123a and 123b are not necessarily limited to continuous surfaces, and may be constituted by a plurality of separated surfaces.

  The inclination angle (inclination angle with respect to the horizontal direction) of each guide surface 123a, 123b is about 45 ° in this embodiment, but is not limited to this, and the first and second bending members 120a, It can be appropriately adjusted according to the movable range of 120b and slide member 122, the operation timing, and the like.

  By setting the inclination angle to about 45 ° as in the present embodiment, the first and second bending members 120a and 120b are made as short as possible while moving the slide member 122 within the narrow space in the stapler body 5. Can be pushed up efficiently. Further, when the punching blades 36a and 36b descend while expanding the through hole p1 of the paper P in the outward direction, the edge of the through hole p1 may protrude so as to hang downward. Even in this case, by setting the guide surface to about 45 °, the first and second bending members 120a and 120b can be prevented by avoiding interference between the suspended edge and the first and second bending protrusions 124a and 124b. It can be smoothly moved up and down in an oblique direction. Therefore, the operability of the first and second bending members 120a and 120b can be improved, and the operability and compactness of the stapler 1 can be improved.

  The bonding member 121 (see FIG. 45) is pivotally supported at one end side (front end side) on the stapler body 5 via a support shaft 133 (see FIG. 48, FIG. 51, etc.) extending in the left-right direction Y. Has been. The other end (rear end) of the bonding member 121 is provided with a pressing portion 134 for pressing and bonding one needle leg 2b and the other needle leg 2c of the non-metallic needle 2 from below. The pressing member 134 moves in the vertical direction Z by the bonding member 121 rotating up and down with the support shaft 133 as a fulcrum.

  The slide member 122 (see FIG. 45) slides and moves in the front-rear direction X with respect to the stapler body 5, and pushes up or down the first and second bending members 120a and 120b and the bonding member 121 as appropriate. Move to. As shown in FIG. 11, the slide member 122 is attached to the stapler body 5 so as to be slidable in the front-rear direction X. The slide member 122 is always urged forward (return direction) by the slider return spring 48. The above-described shaft 26 (slider drive shaft, see FIG. 9) is provided behind the slide member 122, and is inserted into the third guide groove portion 28 of the link 18 (see FIG. 42A, FIG. 48, etc.). ), The slide member 122 and the link 18 are connected. Therefore, the slide member 122 and the operation handle 6 are connected via the link 18, and the slide member 122 can be operated in conjunction with the operation of the operation handle 6.

  The link 18 converts the reciprocating motion of the operation handle 6 in the vertical direction Z into the reciprocating motion of the slide member 122 in the front-rear direction X. The slide member 122 basically reciprocates in the front-rear direction X in conjunction with the rotation of the link 18 (see FIG. 42E and the like). Further, since the third guide groove 28 is formed long in the vertical direction Z, only the link 18 and the operation handle 6 are in the vertical direction Z while maintaining the engagement between the shaft 26 and the third guide groove 28. Is allowed to move to.

  That is, the operation handle 6 and the slide member 122 basically operate in conjunction with each other via the link 18, but only the other operation is permitted, and the connected state is maintained without being separated from each other. It is the composition which becomes.

  Further, as shown in FIG. 45C, the above-described extraction blade guide 117 is attached to the slide member 122, and can be reciprocated in the front-rear direction X together with the slide member 122. When the slide member 122 moves backward and the first and second bending members 120a and 120b enter and exit the holes 116a and 116b of the pair of extraction blades 36a and 36b, the extraction blade guide 117 also moves backward together with the slide member 122. It moves, the 1st guide part 117a retracts from between the extraction blades 36a and 36b, and the 2nd guide part 117b is arrange | positioned. Therefore, interference between the extraction blade guide 117 and the first and second bending members 120a and 120b during the bending operation can be prevented.

  The slide member 122 is provided with first and second side walls 135a and 135b for controlling movement of the first and second bending members 120a and 120b in the vertical direction Z and the horizontal direction Y on both sides in the horizontal direction Y. ing. The first and second operation step portions 126a and 126b of the first and second bending members 120a and 120b engage with the first and second side walls 135a and 135b, respectively.

  As shown in FIG. 46, the first and second side walls 135a and 135b are arranged in order from the rear (upper side in the drawing) to the front (lower side in the drawing). The first and second standby parts 136a and 136b that hold the standby position (initial position) without pushing up the first and second bending members 120a and 120b, and the first and second guides that are guided inward. The second actuating portions 137a and 137b and the first and second holding portions 138a and 138b that hold the first and second bending members 120a and 120b in a predetermined pushed-up state so that the first and second bending members 120a and 120b are not pushed up by a predetermined amount or more. I have.

  The first and second standby portions 136a and 136b are formed at a height that does not push up the first and second bending members 120a and 120b. As shown in FIG. 45, FIG. 50A, FIG. 50B, etc., the 1st, 2nd action | operation part 137a, 137b is formed by the inclined surface which becomes high gradually toward the front. Further, as shown in FIG. 46, the first and second actuating portions 137a and 137b are formed so as to be gradually positioned inward toward the front, and are configured such that the distance between them is gradually narrowed toward the front. Has been. The first and second holding portions 138a and 138b are formed horizontally along the extending direction of the slide member 122 continuously to the first and second operating portions 137a and 137b.

  In the present embodiment, first, the first bending member 120a is operated to bend the one needle leg 2b on the right side. Next, the second bending member 120b is operated with a predetermined phase difference to bend the other needle leg 2c on the left side. In order to make this possible, the starting position of the first operating part 137a in the front-rear direction X is provided on the rear side of the position of the second operating part 137b. With this configuration, when the slide member 122 moves backward, first, the first operating portion 137a pushes up the first bending member 120a via the first operating step portion 126a, and the inner side direction (first bending protrusion 124a). In the direction of projecting from one of the holes 116a. Thereafter, the second actuating portion 137b pushes up the second bending member 120b via the second actuating step portion 126b, and the inner direction (the direction in which the second bent projection 124b protrudes from the other hole portion 116b). To guide.

  On the other hand, as shown in FIGS. 45 and 48, an operating shaft 139 extending in the left-right direction Y is provided at the front end of the slide member 122, and the operating shaft 139 is provided on the wall surface of the bonding member 121. The groove 140 is engaged. The cam groove 140 and the operating shaft 139 are an example of a driving mechanism for the bonding member 121, and convert the movement of the slide member 122 in the front-rear direction X into the rotation operation of the bonding member 121 in the vertical direction Z. is there.

  The cam groove 140 includes a standby groove portion 141 that holds the bonding member 121 in the standby position (initial position) without rotating the bonding member 121 with respect to the movement of the slide member 122 in the front-rear direction X, and a rotation groove portion that rotates the bonding member 121. 142 and a holding groove 143 for holding the bonding member 121 in a predetermined rotational state.

  As shown in each drawing of FIG. 51, the standby groove portion 141 is inclined with respect to the extending direction of the bonding member 121, the bonding member 121 is in the standby position, and the pressing portion 134 is positioned at the lowest point. It is composed of grooves that are horizontal in the state. The rotating groove 142 is configured by a groove having a shape inclined in a direction symmetrical to the standby groove 141, and the holding groove 143 is configured by a groove having a shape along the extending direction of the bonding member 121.

  By configuring the cam groove 140 and the operating shaft 139 as described above, the slide member 122 moves backward, and the first and second bending members 120a and 120b are bending the needle legs 2b and 2c. Since the operation shaft 139 passes through the standby groove 141, the bonding member 121 does not rotate and is in a standby state. When the bending of the needle legs 2b, 2c by the first and second bending members 120a, 120b is completed, the operation shaft 139 passes through the rotation groove 142, whereby the bonding member 121 rotates and the pressing portion 134 is rotated. The needle legs 2b and 2c are pressed and bonded together. Thereafter, when the operating shaft 139 passes through the holding groove portion 143, the rotation of the bonding member 121 is stopped, and the pressing portion 134 is held in a raised state.

  <Operation example of the bending mechanism 38>

  Next, an example of operation | movement of the bending mechanism 38 is demonstrated, referring the action | operation figure of each member of bending mechanisms, such as FIGS. In the standby position (initial position) before the operation handle 6 is pushed down in FIG. 51A, the first and second bending members 120a and 120b are located at the lowest point (FIG. 50A). The operating shaft 139 of the slide member 122 is positioned in the standby groove portion 141 of the bonding member 121, so that the pressing portion 134 is positioned at the lowest point (see FIG. 49A, etc.).

  When the operation handle 6 is pushed down, the penetration mechanism 37 is activated, and the link 18 starts to rotate at the timing when the first through portions 112a and 112b of the extraction blades 36a and 36b penetrate the paper P (FIG. 42D, (See FIG. 42E). As the shaft 26 is guided by the third guide groove 28, the slide member 122 starts moving backward (retreating), and the bending mechanism 38 operates. First, the upper end of the first actuating part 137a pushes up the first actuating step part 126a, so that the first bending member 120a rises in an oblique direction while being guided by one guide surface 123a. As a result, the first bending protrusion 124a protrudes from the one hole 116a to the inside of the pair of extraction blades 36a and 36b, and the one needle leg 2b is bent. Next, the upper end of the second actuating part 137b pushes up the second actuating step part 126b with a predetermined phase difference interposed therebetween, so that the second bending member 120b is obliquely guided by the other guide surface 123b. To rise. As a result, the second folding protrusion 124b protrudes from the other hole 116b to the inside of the pair of extraction blades 36a and 36b, and the other needle leg 2c is bent (see FIG. 50B above).

  The second needle member 2b may be configured to start folding the other needle leg 2c with the first needle leg 2b completely bent. At the timing when the bending member 120a slightly bends one needle leg 2b inward (phase difference), the second bending member 120b starts to bend the other needle leg 2c. Even in this case, the one needle leg 2b and the other needle leg 2c can be bent without interference, and the moving distance (stroke) of the slide member 122 required to bend the pair of needle legs 2b and 2c is shorter. can do.

  Further, the first and second bending members 120a and 120b are lifted obliquely by the action of the slide member 122 and the guide surfaces 123a and 123b, and the needle legs 2b, Since the 2c is bent, the escape of the needle legs 2b, 2c in the front-rear direction X can be suppressed without taking measures to prevent the escape. Therefore, the needle legs 2b and 2c can be bent smoothly, and the bending and the like of the folds of the needle legs 2b and 2b can be suppressed to improve the appearance and the binding function.

  When the needle legs 2b and 2b are bent, the slide member 122 is retracted, so that the first guide portion 117a of the punching blade guide 117 is retracted backward from between the pair of punching blades 36a and 36b. A second guide portion 117b is arranged (see FIGS. 41C and 49B). Therefore, the bending operation can be performed using the space between the stapler body 5 and the second guide portion 117b, and the first and second bending members 120a and 120b can be performed without interfering with the punching blade guide 117. Can pass through the holes 116a and 116b. Further, while the first and second bending members 120a and 120b are operating, the operation shaft 139 is located in the standby groove portion 141, so that the bonding member 121 does not operate and the standby state is maintained. Has been.

  Further, in this embodiment, the end side (front) of the first operating portion 137b with respect to the first bending member 120a is formed slightly lower, and when the bending of one needle leg 2b is completed, the state of FIG. 50C 50D, the first bending member 120a is lowered. With this configuration, interference between the first bending member 120a and the other needle leg 2c can be further suppressed. This is particularly effective when non-metallic needles having long needle legs 2b and 2c are used, or when the thickness of the paper P is thin and the needle legs 2b and 2c protruding from the paper P are long. Therefore, the stapler 1 that can bend the needle legs 2b and 2c smoothly without being affected by the type of the non-metallic needle 2 to be used or the change in the thickness of the paper P can be obtained.

  When the bending of the pair of needle legs 2b and 2c is completed, the first and second operation step portions 126a and 126b of the first and second bending members 120a and 120b are moved to the first and second holding portions 138a and 138b. Positioning stops the rising of the first and second bending members 120a and 120b. At this timing, the operating shaft 139 passes through the rotary groove 142, whereby the bonding member 121 rotates with the support shaft 133 as a fulcrum, and the pressing portion 134 rises, and one needle leg 2b and the other needle leg 2c. Are pressed and bonded (see FIGS. 49C, 50C, and 51C). Also at this time, since the second guide portion 117b of the cutting blade guide 117 is positioned between the pair of cutting blades 36a and 36b, the operation of the bonding member 121 is not affected by the cutting blade guide 117. When the bonding of the needle legs 2b and 2c is completed, the rotation of the bonding member 121 is stopped by the operation shaft 139 passing through the holding groove 143 (FIG. 51 (c)). Thereafter, the backward movement of the slide member 122 is also stopped (FIG. 49 (c)).

  Then, by releasing the push-down operation of the operation handle 6, the operation handle 6 is pushed up by the restoring force of the handle return spring 45, the link 18 rotates in the return direction, and is guided by the third guide groove 28. The slide member 122 moves in the return direction (forward). In this way, the slide member 122 can be forcibly returned by the link 18, but in this embodiment, a slider return spring 48 is further provided. The urging force of the slider return spring 48 assists the movement of the slide member 122 in the return direction, thereby enabling a smoother return operation.

  With the return operation of the slide member 122, the operating shaft 139 passes through the rotating groove 142 and returns to the standby groove 141, so that the pressing portion 134 is lowered and returns to the standby position. Moreover, the slide member 122 moves while pressing the first and second bending members 120a and 120b outwardly by the outer wall surfaces of the first and second actuating portions 137a and 137b. The bending members 120a and 120b are forcibly moved in a direction in which they are separated from each other in the push-down direction and the left-right direction Y. Further, in combination with the urging force of the connecting spring 127, the first and second bending members 120a and 120b can be smoothly pushed down and separated to return to the initial position. In this way, in conjunction with the return operation of the operation handle 6, each part of the bending mechanism 38 can be returned to the initial position by the link 18.

  In addition, the above-described link 18 allows the bending mechanism 38 to be operated at a predetermined timing over the entire area with respect to the penetration mechanism 37 or the like that is directly driven by the operation handle 6, and the return operation. Can also be linked. When such an interlocking relationship over the entire area is not provided, the return of the slide member 122 and the return of the penetration mechanism 37 and the like are performed independently. Therefore, even if the slide member 122 does not return due to, for example, a paper jam or a malfunction of the slider return spring 48, only the penetration mechanism 37 and the like return independently. Therefore, the operator may continue the binding operation without noticing the malfunction of the folding mechanism 38, which may affect the durability of the components and the operability of the stapler 1.

  On the other hand, in this embodiment, since the operation and the return operation of each mechanism are linked by the link 18, any one of the operation handle 6, the cutting and forming mechanism 35, the penetration mechanism 37, and the bending mechanism 38 is malfunctioning. If a return failure occurs, the operation of other mechanisms and the operation handle 6 and the return operation are also stopped. Therefore, when the operating handle 6 does not return completely to the initial position, the operator can easily grasp that any of the mechanisms has malfunctioned and can respond quickly. Further, it is possible to improve the durability of the stapler 1 by preventing the operation from continuing without noticing the malfunction and preventing the component parts from being caught.

  Next, a modification of the bending mechanism will be described with reference to FIG. In the above embodiment, the first and second bending members 120a and 120b are urged in the return direction (downward direction) by the elastic force of the connecting spring 127 that connects the first and second bending members 120a and 120b. Yes. On the other hand, in the modified examples of FIGS. 52A to 52C, the first and second bent members 120a and 120b formed separately are urged in the push-up direction or the push-down direction by the coil spring. .

  In the modification shown in FIG. 52 (a), the first bending member is provided by a torsion coil spring 146 disposed between the protrusion 145 provided on the first bending member 120a and the protrusion 145 provided on the side surface of the stapler body 5. 120a is urged in the push-up direction. The second bending member 120b is urged in the push-up direction by a compression coil spring 147 disposed between the lower end of the second bending member 120b and the bottom surface of the stapler body 5. The first bending member 120a may be urged by the compression coil spring 147, the second bending member 120b may be urged by the torsion coil spring 146, or both the first and second bending members 120a and 120b may be urged. The torsion coil spring 146 or the compression coil spring 147 may be biased.

  In the modification shown in FIG. 52 (b), the first bending is performed by the torsion coil spring 149 disposed between the protrusion 145 provided on the first bending member 120a and the protrusion 145 provided on the top surface of the stapler body 5. The member 120a is urged in the return direction. Further, the second bending member 120b is biased in the return direction by the tension coil spring 150 disposed between the spring mounting portion 148 provided on the second bending member 120b and the spring mounting portion 148 provided on the stapler body 5. doing. The first bending member 120a may be urged by the tension coil spring 150, the second bending member 120b may be urged by the torsion coil spring 149, or both the first and second bending members 120a and 120b may be urged. The torsion coil spring 149 or the tension coil spring 150 may be biased.

  In the modification shown in FIG. 52 (c), a compression coil spring 151 is disposed between the spring mounting portion 148 provided on the first bending member 120a and the spring mounting portion 148 provided on the second bending member 120b. The first and second bending members 120a and 120b are urged in the return direction. In addition, it may replace with the compression coil spring 151, the tension | pulling coil spring 150 may be arrange | positioned, and the 1st, 2nd bending members 120a and 120b may be urged | biased in the push-up direction.

  The first and second bent members are urged in the return direction by urging the first and second bent members 120a and 120b as in the modified examples of this embodiment and FIGS. 52 (b) and (c). The operability at the time of pushing down 120a, 120b can be improved. Further, as in the modification of FIG. 52 (a), the first and second bending members 120a and 120b are biased in the push-up direction so that the first and second bending members 120a and 120b are pushed up. Operability can be improved.

  The means for urging the first and second bending members 120a and 120b is not limited to the embodiment or the modification, and other springs such as a leaf spring and a mainspring spring may be used. A biasing means other than a spring may be used. Further, since the vertical movement of the first and second bending members 120a and 120b can be sufficiently controlled by the operating portion of the slide member 122, such an urging means is not necessarily provided.

  Alternatively, only the movement of the first and second bending members 120a and 120b in the vertical direction Z is slid without the configuration in which the interval between the first and second operating portions 137a and 137b of the slide member 122 is gradually narrowed. It is good also as a structure which forcibly performs with the member 122, and performs the movement to the left-right direction Y with biasing means, such as a spring. Alternatively, the first and second bending members 120a and 120b may be forcibly moved by the slide member 122 in the left-right direction Y and may be moved by the urging means in the up-down direction Z. In any case, the first and second bending members 120a and 120b can be smoothly driven in combination with the guide function of the pair of guide surfaces 123a and 123b.

  [Molding structure and function and effect of non-metallic needle 2 of molding mechanism and needle holding mechanism]

  (Configuration 1) As described above, the stapler 1 of this embodiment includes a molding mechanism (molding member 102) for bending a non-metallic needle in a flat state into a U-shape and a non-shape formed into a U-shape. A needle pressing mechanism (needle pressing plate 92) that holds the needle legs 2b and 2c of the metal needle 2.

  Between the forming mechanism and the needle pressing mechanism, the non-metallic needle 2 formed in a U-shape is exchanged.

  The forming mechanism and the needle pressing mechanism are provided so as to be movable relative to the non-metallic needle 2 along the direction in which the non-metallic needle 2 is bent in a U-shape, and the forming mechanism and the needle pressing mechanism are mutually connected. It is relatively movable.

  The forming mechanism is configured to move relative to the non-metallic needle 2 and the needle pressing mechanism to bend the non-metallic needle 2 in the moving direction.

  When the forming mechanism bends the non-metallic needle 2 in a U shape, the needle pressing mechanism is retracted to a position where it does not contact the bent needle legs 2b and 2c, and is bent and formed in a U-shape. 2 is received, the needle legs 2b and 2c of the non-metallic needle 2 formed in a U-shape are held by moving relative to the non-metallic needle 2.

  (Effect 1) By the said structure, a non-metallic needle 2 is shape | molded in U shape because a shaping | molding mechanism moves relatively along the direction shape | molded in U shape with respect to the non-metallic needle 2. As shown in FIG. At this time, since the needle pressing mechanism is retracted to a position where it does not come into contact with the needle legs 2b and 2c, it is possible to reduce the load on the needle legs 2b and 2c when it is formed in a U-shape. After forming, the needle legs 2b and 2c can be held by the needle pressing mechanism relatively moving in the direction of the non-metallic needle 2. As described above, the non-metallic needle 2 can be formed and transferred by simply moving the forming mechanism and the needle pressing mechanism relative to the non-metallic needle 2. Further, by holding the needle legs 2b and 2c by the needle pressing mechanism, the U-shaped molding state can be maintained, and deformation of the needle legs 2b and 2c can be suppressed. Therefore, the non-metallic needle 2 can be molded more stably.

  (Configuration 2) The forming mechanism includes a forming member 102 that bends the non-metallic needle 2 into a U shape, and the forming member 102 is substantially parallel to the direction in which the non-metallic needle 2 is bent and formed into a U shape. The needle legs 2b and 2c may be bent, and a pair of arm portions 102a for holding the pair of non-metallic needle legs 2b and 2c formed in a U shape may be provided.

  The pair of arm portions 102a can be elastically deformed in a direction in which the interval between the pair of arms 102a is expanded and contracted, and the interval between the distal ends (projections 102b) that hold the ends of the pair of needle legs 2b and 2c is U-shaped. It is preferable that the distance between the pair of needle legs 2b and 2c of the non-metallic needle 2 formed in the above is narrower.

  (Effect 2) With the above configuration, when the needle legs 2b and 2c are held by the pair of arm portions 102a, the tip of the needle slightly protrudes from the tip side (projection portion 102b) narrower than the interval between the needle legs 2b and 2c. Closed inward. Therefore, even if the needle legs 2b and 2c are somewhat deformed, the needle tip can be easily picked up by the needle pressing mechanism, and the non-metallic needle 2 can be molded more stably.

  (Configuration 3) The needle pressing mechanism is disposed through the insertion interval of the pair of needle legs 2b, 2c of the non-metallic needle 2 formed in a U-shape, and moves relative to the non-metallic needle 2, You may have a pair of needle press part 105 which takes in and holds a pair of needle legs 2b and 2c inside.

  When receiving the non-metallic needle 2 from the forming mechanism, the needle pressing portion 105 holds the tip ends of the pair of needle legs 2b and 2c in a state where the pair of arm portions 102a holds the pair of needle legs 2b and 2c. It is preferable that it is comprised.

  (Effect 3) With the above configuration, the pair of needle legs 2b and 2c can be inserted into the pair of needle pressing portions 105 and held securely by simply moving the needle pressing mechanism relative to the non-metallic needle 2. it can. Further, by holding the needle legs 2b and 2c by the needle pressing part 105 before the non-metallic needle 2 is detached from the arm part 102a, the opening of the needle legs 2b and 2c is suppressed and the U-shaped state is maintained. Can do. Therefore, the non-metallic needle 2 can be molded more stably. In addition, it is not necessary to open / close the needle pressing portion 105 or to provide a member therefor, and the configuration of the molding mechanism and the needle pressing mechanism can be simplified, the number of parts can be reduced, and the cost can be reduced. A stapler 1 can be provided.

  (Configuration 4) Engaging portion that engages at least one of the needle pressing mechanism and the molding mechanism with the other so as to be integrally movable when the non-metallic needle 2 is transferred between the molding mechanism and the needle pressing mechanism. You may have (elastic piece 106).

  (Effect 4) With the above configuration, for example, the engagement of the engaging portion is released, and only the forming mechanism is moved relative to the nonmetallic needle 2 to form the nonmetallic needle 2 by the forming mechanism. be able to. After the molding, the molding mechanism and the needle holding mechanism are engaged by the engaging portion, and the needle is held in a state where the non-metallic needle 2 molded in a U-shape is held by the molding mechanism. The pressing mechanism can hold the needle legs 2b and 2c. Accordingly, the opening of the needle legs 2b and 2c can be suppressed and the U-shaped state can be maintained, and the non-metallic needle 2 can be transferred smoothly and reliably, and more stable molding can be performed. It becomes.

  (Structure 5) A penetrating mechanism 37 having a pair of punching blades 36a, 36b for allowing the pair of needle legs 2b, 2c of the non-metallic needle 2 to penetrate the paper P is provided, and the forming mechanism is provided integrally with the penetrating mechanism 37. May be.

  (Effect 5) With the above configuration, the molding mechanism can be operated in conjunction with the penetration mechanism 37, and the number of parts can be reduced. Therefore, it is possible to reduce the installation space for the molding mechanism and the like, and the stapler 1 can be reduced in size.

  (Configuration 6) The forming mechanism may be accommodated in the needle pressing mechanism so as to be relatively movable.

(Effect 6) With the above configuration, the volumes of the forming mechanism and the needle pressing mechanism can be further reduced, and the stapler 1 can be downsized. Further, the molding mechanism can be relatively moved within the needle pressing mechanism, and the movement range of the molding mechanism can be limited to a desired value, and movement control can be easily performed.
[Guide structure and operational effects of the cutting blades 36a and 36b of the cutting blade guide 117]

  (Structure 1) As described above, the stapler 1 of this embodiment includes the penetration mechanism 37 having the pair of punching blades 36a and 36b for passing the pair of needle legs 2b and 2c of the non-metallic needle 2 through the sheet P, and the sheet. A bending mechanism 38 that bends the pair of needle legs 2b and 2c penetrating P along the paper P. Further, a punching blade guide 117 that guides the inside of the pair of punching blades 36 a and 36 b penetrating the paper P is provided.

  The punching blade guide 117 is positioned between the pair of punching blades 36a and 36b, and includes a first guide portion 117a that guides a portion penetrating from the paper P of the punching blades 36a and 36b, and a paper P of the punching blades 36a and 36b. And a second guide part 117b for guiding a part of the part penetrating from the first part.

  Before the pair of punching blades 36a and 36b penetrate the paper P and the folding mechanism 38 bends the needle legs 2b and 2c, the first guide portion 117a is positioned between the punching blades 36a and 36b. When the pair of extraction blades 36a and 36b penetrate the paper P and the folding mechanism 38 bends the needle legs 2b and 2c, the second guide portion 117b is interposed between the extraction blades 36a and 36b. It is configured to be positioned and guide the punching blades 36a, 36b.

  (Function and Effect 1) With the above configuration, the pair of punching blades 36a and 36b penetrates the paper P, and before the folding mechanism 38 bends the needle legs 2b and 2c, the paper P is fed by the first guide portion 117a. The portions of the penetrating blades 36a and 36b penetrating from the paper P are guided, and the flow (deformation) in the inner direction of the punching blades 36a and 36b can be suppressed. Further, when the pair of punching blades 36a and 36b penetrate the paper P, and the bending mechanism 38 bends the needle legs 2b and 2c, the portion of the punching blades 36a and 36b penetrated from the paper P by the second guide portion 117b. This can guide a part of the punching blades 36a and 36b, and suppress the blurring in the left-right direction Y and the inward deformation thereof. Therefore, there is no need to guide with the bending members 120a and 120b. In addition, the first guide portion 117a and the second guide portion 117b can be switched by simply moving the punching blade guide 117. Accordingly, the leading edges of the punching blades 36a and 36b can always be guided by the first guide portion 117a and the second guide portion 117b, and the cutting blades 36a and 36b of the penetrating mechanism 37 can be formed with a small number of parts and a simple configuration. Deformation and the like can be suppressed, and the binding operation can be performed smoothly.

  (Configuration 2) A punching blade guide drive unit (sliding member 122) that can move the punching blade guide 117 in a direction in which the needle legs 2b and 2c are bent is provided, and the punching blade guide 117 is arranged in a direction in which the needle legs 2b and 2c are bent. The one guide portion 117a and the second guide portion 117b may be arranged side by side. At this time, the punching guide driving unit is configured such that the first guide 117a is the punching blade before the pair of punching blades 36a and 36b penetrate the paper P and the bending mechanism 38 bends the needle legs 2b and 2c. When the pair of punching blades 36a and 36b pass through the paper P and the folding mechanism 38 bends the needle legs 2b and 2c, the second guide portion 117b is located between the punching blades 36a and 36b. It is preferable to move the cutting blade guide 117 so as to be positioned at the position.

  (Effect 2) With the above configuration, the first guide portion 117a and the second guide portion 117b can be moved only by moving the extraction blade guide driving portion (sliding member 122) in the direction in which the needle legs 2b and 2c are bent. It can be easily performed, and a more stable guide is possible. If the first guide portion 117a and the second guide portion 117b are arranged side by side and can be moved by the extraction blade guide driving portion, the first guide portion 117a and the second guide portion 117b are separated. Or may be integral.

  (Configuration 3) Further, as described above, the stapler 1 of this embodiment includes the penetrating mechanism 37 having the pair of punching blades 36a and 36b that allow the pair of needle legs 2b and 2c of the non-metallic needle 2 to penetrate the paper P. And a bending mechanism 38 that bends the pair of needle legs 2b, 2c penetrating the paper P along the paper P. Further, a punching blade guide 117 that guides the inside of the pair of punching blades 36 a and 36 b penetrating the paper P is provided.

  The punching blade guide 117 is positioned between the pair of punching blades 36a and 36b, and includes a first guide portion 117a that guides a portion penetrating from the paper P of the punching blades 36a and 36b, and a paper P of the punching blades 36a and 36b. A second guide portion 117b for guiding a part of the portion penetrating from the first guide portion 117b. When the first guide portion 117a and the second guide portion 117b penetrate the paper P, the second guide portion 117b penetrates the paper P. When the bending mechanism 39 bends the pair of needle legs 2b and 2c, the needle legs 2b and 2c always have continuous surfaces that support the inside of the punching blades 36a and 36b.

  (Effect 3) By the said structure, the blurring to the left-right direction Y of the punching blades 36a and 36b and a deformation | transformation to an inner side can be suppressed similarly to (the effect 1) described in the last (configuration 1). . Further, the inside of the punching blades 36a and 36b is always kept from when the pair of punching blades 36a and 36b penetrates the paper P until the folding mechanism 39 bends the pair of needle legs 2b and 2c penetrating the paper P. This can be indicated on the continuous surface, and the effect of suppressing the blurring of the punching blades 36a, 36b in the left-right direction Y and the deformation to the inside can be further enhanced.

  (Configuration 4) The first guide portion 117a and the second guide portion 117b may be composed of a single component.

  (Effect 4) With the above configuration, the punching blade guide 117 can be obtained with a simpler configuration and a smaller number of parts, and the size can be reduced. Further, the synchronous movement and switching between the first guide portion 117a and the second guide portion 117b can be easily performed.

  (Configuration 5) The height of the first guide portion 117a is equal to the height of the paper base 7 on which the paper P is placed, and the height of the second guide portion 117b is higher than that of the first guide portion 117a. Preferably it is low.

  (Effect 5) With the above configuration, the load when the pair of extraction blades 36a and 36b penetrates the paper P can be reduced, the penetration operation by the penetration mechanism 37 is smoothly performed, and the through hole p1 is more than necessary. It can be prevented from becoming wide. Therefore, the paper P can be bound more stably by the non-metallic needle 2. In addition, by making the second guide portion 117b lower than the first guide portion 117a, even if the pair of punching blades 36a and 36b penetrate deeply into the paper P, the inner side surface near the blade edge can be guided. In addition, even when the second guide portion 117b is located between the punching blades 36a and 36b, the bending operation by the bending mechanism 38 can be performed smoothly.

  (Configuration 6) The extraction blade guide 117 may be provided on a drive member (slide member 122) that drives the bending mechanism 38.

  (Effect 6) With the above configuration, the first and second guide portions 117a and 117b are easily switched between the pair of extraction blades 36a and 36b by driving the drive member (reciprocating movement of the slide member 122). Can be arranged. Therefore, it is not necessary to provide a separate drive member for the extraction blade guide 117, and the number of parts can be reduced, the configuration can be simplified, and the size can be reduced. In addition, the timing of the bending operation of the bending mechanism 38 and the driving operation of the extraction blade guide 117 can be more easily and precisely performed, and the penetration operation, the bending operation, and the like can be performed more smoothly.

  (Configuration 7) The first guide portion 117a may be provided with a chamfered portion 117c at a corner portion on the second guide portion 117b side.

  (Function 7) When the bending operation is completed and the first guide portion 117a returns to the space between the pair of punching blades 36a and 36b, the needle legs 2b and 2c are moved by the chamfered portion 117c. Move while scooping up. Therefore, the return operation of the first guide portion 117a below the needle legs 2b and 2c can be performed more smoothly, and the sheet P is loaded by the non-metallic needle 2 while suppressing the turning of the needle legs 2b and 2c. It can be bound more stably.

  [Bending structure and function of the bending mechanism 38]

  (Structure 1) As described above, the stapler 1 of this embodiment includes the penetration mechanism 37 having the pair of punching blades 36a and 36b for passing the pair of needle legs 2b and 2c of the non-metallic needle 2 through the sheet P, and the sheet. A bending mechanism 38 that bends the pair of needle legs 2b and 2c penetrating P along the paper P.

  In the pair of punching blades 36a and 36b, holes 116a and 116b (or notches) are provided in second through portions 113a and 113b (penetrating portions) penetrating the paper P.

  As shown in FIG. 45, the bending mechanism 38 moves along the bending direction in which the pair of needle legs 2b, 2c is bent inward, and protrudes between the pair of punching blades 36a, 36b from the holes 116a, 116b. First and second bending members 120a and 120b for bending the pair of needle legs 2b and 2c, and first and second guide surfaces 123a and 123b for guiding the first and second bending members 120a and 120b in the bending direction. And a slide member 122 (drive member) that drives the first and second bending members 120a and 120b in the bending direction. The first and second bending members 120 a and 120 b are disposed between the first and second guide surfaces 123 a and 123 b and the slide member 122.

  (Effect 1) In order to bind the paper P satisfactorily with the non-metallic needle 2, it is necessary to bend the pair of needle legs 2b and 2c so as to overlap in parallel with the crown 2a. In the conventional configuration in which the folding member is folded up from the bottom by rotating the bending member, in order to suppress the pressing member that presses the needle tip inward and deforms, and the escape (deformation) of the needle leg in the front-rear direction X. However, there is a problem that the number of parts is large and the structure is complicated.

  Therefore, the first and second bending members 120a and 120b are configured to protrude linearly from the holes 116a and 116b of the pair of punching blades 36a and 36b. Guide surfaces 123a and 123b for guiding the first and second bending members 120a and 120b in a bending direction of the pair of needle legs 2b and 2c, that is, in a direction substantially parallel to the crown 2a, and first and first It arrange | positioned between the slide members 122 which drive the two bending members 120a and 120b.

  With this configuration, when the slide member 122 is operated, the first and second bending members 120a and 120b are moved by being guided by the guide surfaces 123a and 123b, and project straightly from the holes 116a and 116b upward. Thus, the pair of needle legs 2b and 2c are bent. Therefore, the pair of needle legs 2b and 2c can be bent substantially parallel to the crown 2a.

  Such a bending mechanism 38 having an excellent bending function can be realized simply by disposing the first and second bending members 120 a and 120 b between the guide surfaces 123 a and 123 b and the slide member 122. Therefore, with a small number of parts and a simple configuration, the staple legs 2b and 2c of the non-metallic needle 2 can be reliably bent, and the stapler 1 capable of reducing costs can be provided. Further, the stapler 1 can be reduced in size and weight.

  (Configuration 2) The slide member 122 is configured to reciprocate in a direction (front-rear direction X) intersecting the insertion / extraction direction (vertical direction Z) of the pair of extraction blades 36a, 36b. The bending members 120a and 120b may be provided with first and second actuating portions 137a and 137b that push up toward the pair of needle legs 2b and 2c. In this case, the pair of first and second bending members 120a and 120b may be pushed down by the first and second operating portions 137a and 137b by the backward movement of the slide member 122. Alternatively, the push-down operation may be performed with another member such as a spring.

  (Effect 2) With the above configuration, the first and second actuating portions 137a and 137b can be smoothly moved in the bending direction by the slide member 122.

  (Configuration 3) Further, the slide member 122 is configured to reciprocate in a direction (front-rear direction X) intersecting the insertion / extraction direction (vertical direction Z) of the pair of extraction blades 36a, 36b. The distance between the second bending members 120a and 120b is increased so that the bending protrusions 124a and 124b projecting between the pair of extraction blades 36a and 36b of the first and second bending members 120a and 120b are paired with the pair of extraction blades 36a. , 36b may be provided with first and second actuating portions 137a, 137b that move in the direction of exiting from the holes 116a, 116b.

  In this case, the distance between the pair of first and second bending members 120a and 120b is narrowed by the first and second actuating portions 137a and 137b by the forward movement, and the hole portions 116a of the pair of punching blades 36a and 36b, It is good also as a structure moved to the direction which the bending protrusions 124a and 124b protrude from 116b. Alternatively, the moving operation in the protruding direction may be performed by another member such as a spring.

  (Operation Effect 3) With the above configuration, the first and second bending members 120a and 120b can be smoothly returned to the initial positions by the slide member 122.

  (Configuration 4) The slide member 122 moves the first or second bending member 120a, 120b, and moves the second or first bending member 120b, 120a with a predetermined phase difference therebetween. It may be a configuration.

  (Effect 4) With the above configuration, the pair of needle legs 2b and 2c can be folded and stacked one after another without interfering with each other, thereby enabling a smoother bending operation.

  [Linking structure and operational effect of link 18]

  (Configuration 1) As described above, the stapler 1 of this embodiment includes the operation handle 6 (operation member) that reciprocates by the operation of the operator, the link 18 that operates in response to the reciprocation of the operation handle 6, and the sheet. A bending mechanism 38 that bends the pair of needle legs 2b, 2c of the non-metallic needle 2 penetrating P along the paper P. As shown in FIGS. 42A to 42F, the bending mechanism 38 includes first and second bending members 120a and 120b and first and second bending members 120a and 120b for bending the pair of needle legs 2b and 2c inward. And a slide member 122 (drive member) for driving the motor. The slide member 122 is connected to the link 18 and is configured to be interlocked with the operation of the operation handle 6 via the link 18. More specifically, the operation handle 6 and the link 18 are connected by the link shaft 15, and the slide member 122 and the link 18 are connected by the shaft 26 (slider drive shaft), whereby the operation handle 6 and the bending mechanism 38 are connected. Can be linked via a link 18.

  (Operation Effect 1) Here, the operation handle 6 and the bending mechanism 38 are not mechanically connected, and the bending mechanism 38 operates independently of the operation of the operation handle 6. Even when the bending mechanism 38 does not return to the initial position due to clogging of the metal needle 2, the operation handle 6 normally returns to the initial position. Therefore, the operator may continue the operation without noticing the malfunction of the bending mechanism 38, which may affect the operability and durability of the stapler 1.

  Therefore, the operation handle 6 and the slide member 122 of the bending mechanism 38 are mechanically connected by the link 18. With this configuration, the operation of the operation handle 6 and the operation and return operation of the bending mechanism 38 can be linked. Therefore, if an operation failure occurs in one of the two, it also affects the other predetermined operation via the link 18, so that the operator can reliably grasp the operation failure and respond quickly. Therefore, durability and operability of the stapler 1 can be improved. Further, the stapler 1 having excellent durability and operability can be implemented at low cost with only a small number of parts and a simple configuration by simply connecting the operation handle 6 and the slide member 122 with the link 18.

  (Configuration 2) The drive member connected to the link 18 is a slide member 122 that reciprocates in response to the operation of the link 18, and the slide member 122 includes first and second bending members 120a and 120b. You may provide the inclined surface (1st, 2nd action | operation part 137a, 137b) which guides the needle legs 2b and 2c in the direction bent.

  (Operation Effect 2) With the above-described configuration, the first and second bending members 120a are moved via the inclined surfaces (first and second operation portions 137a and 137b) when the slide member 122 moves forward or backward. , 120b can be smoothly guided in the direction in which the needle legs 2b, 2c are bent.

  (Configuration 3) Further, it has a pair of punching blades 36a and 36b for penetrating the pair of needle legs 2b and 2c of the non-metallic needle 2 into the paper P, and a pair of paper on the paper P in response to the reciprocation of the operation handle 6. There may be provided a penetration mechanism 37 for performing the insertion / extraction operation of the extraction blades 36a, 36b. More specifically, the penetration mechanism 37 and the bending mechanism 38 can be linked via the link 18 by connecting the penetration mechanism 37 and the link 18 by the link shaft 15.

  (Effect 3) With the above configuration, the penetration operation of the penetration mechanism 37 driven by the operation handle 6, the bending operation of the bending mechanism 38, and the return operation thereof can be linked via the link 18, and Each operation can be executed at a suitable timing. Further, the operator can surely grasp the malfunction caused by either the operation of the penetration mechanism 37 or the bending mechanism 38, and can quickly cope with it. Therefore, durability of the penetration mechanism 37 and the bending mechanism 38 can be improved.

  (Configuration 4) Further, a pusher 61 (conveying member) for conveying the non-metallic needle 2 in a predetermined conveying direction (front-rear direction X) is provided, and the link 18 is linked to the reciprocating motion of the operation handle 6 to push the pusher 61. May be configured to reciprocate in the transport direction (front-rear direction X). More specifically, when the link 18 pushes the shaft 25 (pusher drive shaft) inserted through the pusher 61 by the pushing projection 30, the pusher 61 reciprocates in the transport direction corresponding to the operation of the operation handle 6. Move.

  (Effect 4) With the above configuration, for example, during the operation of binding the paper P by the penetration mechanism 37 or the bending mechanism 38, the pusher 61 is retracted rearward so that the penetration mechanism 37 or the bending mechanism 38 Do not disturb the operation. Then, the pusher 61 is advanced by the link 18 at the timing when the operation of binding the paper P is completed, whereby the new non-metallic needle 2 can be sent between the pair of punching blades 36a and 36b. Therefore, the penetrating operation, the bending operation, the conveying operation of the non-metallic needle 2 and the returning operation thereof can be linked by the link 18 and can be executed at a suitable timing. Further, in addition to the malfunction of the penetration mechanism 37 and the bending mechanism 38, the malfunction of the pusher 61 can be surely grasped by the operator and can be dealt with quickly. Therefore, durability of the penetration mechanism 37, the bending mechanism 38, and the pusher 61 can be improved.

  While the embodiments have been described in detail with reference to the drawings, the embodiments are merely illustrative. Therefore, the present invention is not limited only to the embodiments, and it goes without saying that design changes and the like within a range not departing from the gist are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modification examples are disclosed, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

DESCRIPTION OF SYMBOLS 1 Stapler 2 Non-metallic needle 2b, 2b ', 2c Needle leg 3 Connection needle 4 Hole 6 Operation handle (operation part)
7 Paper stand (paper placement section)
11 Handle operation unit 18 Link 32 Transport path 34 Transport mechanism 35 Cutting molding mechanism (cutting mechanism, molding mechanism, needle pressing mechanism)
36, 36a, 36b Cutting blade 37 Penetration mechanism 38 Bending mechanism 61 Pusher (conveying member)
81 Positioning portion 82 Return portion 83 Pushing portion 84 Needle holding portion 85 Contact surface 86 Engaging portion 87 Restricting member 88 Disengagement restricting portion 91 First restricting portion 92 Needle pressing plate (needle pressing mechanism)
93 Second restricting part 95 Clearance 96 Clearance 101 Cutting blade (cutting mechanism)
102 Molding member (molding mechanism)
102a Arm part 105 Needle pressing part 106 Elastic piece (engagement part)
113a, 113b Second penetration part (penetration part)
116a, 116b Hole portion 117 Extraction blade guide 117a First guide portion 117b Second guide portion 117c Chamfered portion 120a First bending member 120b Second bending member 123a, 123b Guide surface 122 Slide member (drive member)
137a 1st operation part (operation part, inclined surface)
137b Second operation part (operation part, inclined surface)
P paper (binding object)
X Forward / backward direction (transport direction)

Claims (11)

A cutting mechanism that cuts connecting needles formed by connecting a plurality of non-metallic needles in a flat state one by one;
In a stapler comprising a transport mechanism that transports the connecting needle to the cutting mechanism via a transport path,
A stapler characterized in that a positioning portion is provided in the middle of the transport path so that the connection needle can be positioned when the connection needle moved by a transport operation by the transport mechanism hits. The stapler according to claim 1, wherein
The positioning portion performs positioning at a position on the rear side in the transport direction with respect to the tip end portion in the transport direction of the connection needle, and positions the connection needle by pressing the connection needle in a direction toward the rear side in the transport direction. A stapler characterized by that. The stapler according to claim 2, wherein
The stapler is characterized in that the positioning portion is positioned by being brought into contact with an edge portion of the hole provided in the non-metallic needle or the connecting needle and directed toward the rear side in the transport direction. The stapler according to claim 2, wherein
The stapler is characterized in that the positioning portion is positioned by being brought into contact with an edge of the both ends of the non-metallic needle in a flat state facing the rear side in the transport direction. In the stapler according to any one of claims 1 to 4,
The transport mechanism temporarily biases the connection needle toward the rear side in the transport direction of the connection needle and presses the connection needle against the positioning portion when the connection needle is cut by the cutting mechanism. A stapler comprising a return portion. The stapler according to any one of claims 1 to 5,
The positioning unit is configured to move the non-metallic needle or the connecting needle toward the rear side in the transport direction when the transport mechanism biases the non-metallic needle or the connecting needle toward the rear side in the transport direction. A stapler characterized by having a locking surface to be applied to the edge. The stapler according to claim 1, wherein
The positioning portion performs positioning at a position on the rear side in the transport direction with respect to the tip end portion in the transport direction of the connection needle, and positions the connection needle by pressing the connection needle toward the front side in the transport direction. A stapler characterized by what it does. The stapler according to claim 7,
The stapler is characterized in that positioning is performed by hitting an edge of the hole provided in the non-metallic needle or the connecting needle toward the front side in the transport direction. The stapler according to claim 7,
The stapler is characterized in that positioning is performed by hitting the edge of the both ends of the non-metallic needle in a flat state facing the front side in the transport direction. The stapler according to any one of claims 7 to 9,
The transport mechanism includes a pressing unit that urges the connection needle toward the front side in the transport direction of the connection needle and presses the connection needle against the positioning unit when the connection needle is fed by the transport mechanism. A stapler characterized by that. The stapler according to any one of claims 7 to 10,
The positioning unit applies the non-metallic needle or the connecting needle to an edge of the non-metallic needle or the connecting needle facing the front in the transport direction when the transport mechanism urges the non-metallic needle or the connecting needle to the front in the transport direction. A stapler characterized by having a locking surface.