JP2013233780A - Cut blade of binding machine and binding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that in a binding machine that includes a cut blade, a big power may be required when extracting the cut blade from paper sheets in an engaged state that a binding member is engaged with a binding member insertion window.SOLUTION: There is adopted a cut blade 33 that includes: a blade body 331 that includes at its tip end, a blade edge 331a to form a cut hole P2 in a paper sheet by doing relative reciprocate movement between the paper sheets and penetrating the paper sheets; a binding member insertion window 332 that is provided penetrating the blade body 331 in the thickness direction to insert the binding member P4 in the cut hole P2 when extracting the blade body 331 from inside of the cut hole P2 in the state engaged with the binding member P4 to bind the paper sheets; and an edge shaping part 333a that is provided at a base end side of the blade body 331 than the binding member insertion window 332, and is related with a cutting end edge P2a of the cut hole P2 with preference to the binding member P4, when extracting the blade body 331 from inside the cut hole P2.

Description

  The present invention relates to a cutting machine of a binding machine that does not use a metal needle amongst binding machines that integrally bind the ends of a plurality of stacked sheets, and such a cutting blade. The present invention relates to a binding machine using the

  Conventionally, various types of binding machines that do not use metal needles have been considered. As an example of such a binding machine, for example, a punching blade that forms a punching hole while forming cutting and raising pieces on a plurality of sheets, and a front end side of the cutting and raising piece that is provided adjacent to the punching blade are provided. A cutting blade for forming a cut hole for locking, a binding machine main body for holding the punching blade and the cutting blade, and a punch table disposed in the binding machine main body via a paper insertion gap; (For example, refer patent document 1).

  By the way, in the binding machine described in Patent Document 1, the cutting blade is provided with a binding member insertion window that can be engaged with the cutting and raising piece, and the cutting and raising piece is provided in the binding member insertion window. When the cutting blade is extracted from the cut hole in the state where the two are engaged, the cut and raised piece is inserted through the cut hole. Therefore, immediately after the cut hole is drilled by the cutting blade, the cut edge of the cut hole is inclined and deformed so as to flutter in the direction of the drilling operation. When performing the operation of extracting the cutting blade from the cut hole from this state, the cutting edge is passed through the cut hole while applying the action of inverting the inclined cutting edge in the direction of the extraction operation. It may be necessary to derive to the front side, and a large extraction force may be required. That is, in such a configuration, the load generated when the cutting edge that is inclined and deformed in the direction of the punching operation is reversed and deformed in the direction of the extraction operation, and the cut surface is passed through the cut hole and the surface of the paper. Since a load generated when being led out to the side is generated almost at the same time, a large extraction force may be required. Therefore, a large operating force may be required in a binding machine that is manually operated as described above. In other words, in the manual operation type, the cutting blade is penetrated through the paper against the elastic force of the spring, and the cutting blade is extracted from the paper by the elastic force of the spring. When the load of the motor temporarily increases, a spring having a large repulsive force must be used, and a large force may be required even during manual operation.

  The problem as described above is not limited to the binding machine in a mode in which the leading end portion of the cut and raised piece is locked in the cut hole formed by the cutting blade, but the window that allows the cutting blade to engage the binding member. In addition, it exists in all binding machines having a configuration in which the binding member engaged with the window is inserted into the cut hole during the operation of extracting the cutting blade from the cut hole.

JP 2011-189547 A

  The present invention pays attention to the above points, and includes a cutting blade having a binding member insertion window capable of engaging a binding means, and a binding machine provided with such a cutting blade. It is an object of the present invention to solve the problem that a large force may be required when the cutting blade is extracted from the paper in a state where the two are engaged.

  That is, the cutting blade of the binding machine according to the present invention includes a blade body having a blade tip for forming a cut hole in the paper by reciprocating relative to the paper and penetrating the paper, Binding that is provided through the blade body in the thickness direction, and is used to insert the binding member into the cut hole in a state where the binding member for binding paper is engaged when the blade body is extracted from the cut hole. A member insertion window and a base end side of the blade body than the binding member insertion window, and when the blade body is extracted from the cut hole, the cutting edge of the cut hole has priority over the binding member. It is characterized by comprising an edge shaping section that comes into contact.

  If this is the case, during the extraction operation, the edge shaping portion is brought into contact with the cutting edge of the cut hole that is inclined and deformed in the direction of the drilling operation, and the cutting edge is extracted. After the direction is reversed, the binding member engaged with the binding member insertion window passes through the cut hole. That is, during the extraction operation, the time when the load for reversing the cutting edge in the direction of the extraction operation is shifted from the time when the load generated when the binding member penetrates the cut hole, and the load is shifted. Can be dispersed. Therefore, it is possible to solve the problem that a large extraction force may be required during the extraction operation.

  As an example of a specific aspect of the edge shaping part of such a cutting blade, from a part of the second window provided on the proximal end side of the blade body from the binding member insertion window, or from the blade body There is an action portion provided on a protrusion provided by cutting and raising, and facing the direction of the extraction operation.

  As an example of a binding machine using a cutting blade as described above, it comprises a cutting blade as described above and a punch table for holding paper, and the paper held on this punch table is Examples include a configuration in which the paper is bound by the binding member by passing through a cutting blade and extracting the paper.

  Further, as a preferable aspect for improving the usability of the binding machine using the cutting blade as described above, the cutting blade as described above, a punch table for holding paper, and the punch table A manual operation unit that receives an operation force for forming the cut hole by penetrating the cutting blade through the held paper, and the cutting blade when the operation force applied to the manual operation unit is de-energized. And a spring provided for removing the paper from the paper. If this is the case, the load when the cutting blade is removed from the paper is smaller than that of the conventional one, so a spring with a small repulsive force can be used, and therefore the repulsive force of this spring can be reduced. This is because it is possible to eliminate the need to apply a large force when applying a manual operation force for forming the cut hole against the operation portion. In addition, it can be used to reverse the cutting edge in the direction of the extraction operation closer to the region where the repulsive force of the spring is the largest compared to the conventional one, so the repulsive force of the spring can be used efficiently. From this point, it is possible to promote downsizing of the spring.

  According to the present invention, in a cutting blade having a binding member insertion window capable of engaging a binding means, and a binding machine including such a cutting blade, the binding member is engaged with the binding member insertion window. In this state, it is possible to solve the problem that a large force may be required when the cutting blade is removed from the paper.

The perspective view of the binding machine which is one Embodiment of this invention. The top view in the embodiment. AA sectional drawing in FIG. The front view which shows the blade unit in the embodiment. The perspective view which shows the cutting blade in the same embodiment. Explanatory drawing in the same embodiment. Explanatory drawing in the same embodiment. Explanatory drawing in the same embodiment. Explanatory drawing in the same embodiment. Explanatory drawing in the same embodiment. Explanatory drawing in the same embodiment. The perspective view which shows the cutting blade in other embodiment of this invention. The perspective view which shows the cutting blade in other embodiment of this invention. The perspective view which shows the cutting blade in other embodiment of this invention. The perspective view which shows the cutting blade in other embodiment of this invention. The perspective view which shows the cutting blade in other embodiment of this invention. Action | operation explanatory drawing in the binding machine which concerns on other embodiment of this invention. Action | operation explanatory drawing in the binding machine which concerns on the same embodiment. Action | operation explanatory drawing in the binding machine which concerns on the same embodiment. Action | operation explanatory drawing in the binding machine which concerns on the same embodiment. Action | operation explanatory drawing in the binding machine which concerns on the same embodiment. Action | operation explanatory drawing in the binding machine which concerns on the same embodiment. Action | operation explanatory drawing in the binding machine which concerns on the same embodiment.

  An embodiment of the present invention will be described below with reference to FIGS.

  This embodiment is a case where the present invention is applied to a binding machine 1 in which the cutting blade P4 obtained by cutting and raising the cutting blade 33 from the paper P is used as a binding member.

  As shown in FIGS. 1 and 2, the binding machine 1 forms punch holes P1 and cut holes P2 in a plurality of sheets of paper P, and cuts and raises a piece P4 cut and raised from the punch holes P1. By inserting it into the hole P2, the plurality of sheets P can be bound together to form a booklet B, that is, a sheet bundle. Further, the punching blade 32 that is a blade used in the binding machine 1 can form a punching hole P1, and the cutting blade 33 used in the binding machine 1 can form a slit-like cut hole P2. Is. Details will be described below.

  As shown in FIGS. 1 and 3, the booklet B is formed by bundling a plurality of sheets P, and these sheets P are joined to each other at one joint portion P3 set at the edge. . The joint portion P3 includes a punching hole P1 formed in each paper P by a punching blade 32 penetrating from one side (hereinafter referred to as an upper surface Pa) of the paper P, and adjacent to the punching hole P1. The sheet P includes a slit-like cut hole P2 formed in each sheet P, and a cut and raised piece P4 cut and raised from the punching hole P1 to the other surface side of each sheet P. The plurality of sheets P are joined to each other by causing the leading end portion P4a of the cut and raised piece P4 to pass through the cut hole P2 and lead out to the upper surface Pa side of the sheet P.

  On the other hand, as shown in FIGS. 1, 2 and 4, the binding machine 1 supports a blade unit 3 including the punching blade 32 and the cutting blade 33, and the blade unit 3 so as to be slidable. The binding machine body 2, the punch table 4 that is disposed in the binding machine body 2 via a paper insertion gap 35 and holds the paper P, and the punching blade 32 and the paper P held on the punch table 4 The manual operation unit 5 that receives an operation force for penetrating the cutting blade 33 to form the punch hole P1 and the cut hole P2, and the operation force applied to the manual operation unit 5 is de-energized. A spring 6 for extracting the insert blade 33 from the paper P is provided.

  As shown in FIG. 4, the blade unit 3 is guided by a guide (not shown) provided in the binding machine body 2 and can be moved up and down while maintaining a fixed posture, and the blade unit 3 is attached to the slide member 31. From the punching blade 32, the cutting blade 33 attached to the slide member 31 adjacent to the punching blade 32, and the initial posture (S) arranged inside the punching blade 32 and accommodated in the punching blade 32, An inner cam 34 pivotally supported by a slide member 31 via a shaft 341 between a rotation posture (K) partially protruding out of the punching blade 32 is provided.

  As shown in FIG. 4, the slide member 31 has a hollow block shape that opens downward to support the punching blade 32 and the cutting blade 33 and is made of a synthetic resin. A shaft holding portion 311 that rotatably holds the drive shaft 36 is provided on the upper surface of the slide member 31, and a manual operation force applied to the manual operation portion 5 is transmitted to the slide member 31 via the drive shaft 36. It has become so. The slide member 31 holds the upper end side of the spring 6. Further, the lower end side of the spring 6 is held by a bottom wall 211 of the housing 21 described later of the binding machine body 2, and the slide member 31 is elastically biased upward by the spring 6.

  The punching blade 32 forms punching holes P1 and cut-and-raised pieces P4 in the paper P, and is made by punching and bending a sheet metal material as shown in FIG. . The base end side of the punching blade 32 is fixed to the slide member 31.

  The cutting blade 33 forms a cut hole P2 in the paper P, and is made by punching a sheet metal material as shown in FIG. The cutting blade 33 has a proximal end fixed to the slide member 31 and has a cutting edge 331a for forming the cut hole P2 in the paper P by penetrating the paper P as shown in FIG. A blade main body 331 provided at the tip, and the cut in a state where the blade main body 331 is provided through the blade main body 331 in the thickness direction and the cut and raised piece P4 is engaged when the blade main body 331 is extracted from the cut hole P2. A binding member insertion window 332 for inserting the cut and raised piece P4 into the hole P2 and a second window 333 provided above the binding member insertion window 332, that is, on the base end side of the blade body 331 are provided. . In this embodiment, the inner surface of the second window 333 contacts the cutting edge P2a of the cut hole P2 in preference to the cut and raised piece P4 when the blade body 331 is extracted from the cut hole P2. It is the edge shaping part 333a of the present invention. More specifically, the second window 333 has a rectangular shape, and the inner surface of the lower side portion is the edge shaping portion 333a. The inner surface of the lower side portion of the second window 333, that is, the edge shaping section 333a is formed of the sheet P positioned at the lowest end of the plurality of stacked sheets P to be the booklet B when the cut hole P2 is formed. It is designed to move downward from the lower surface Pb. The width dimension of the second window 333 is set to be the same as the width dimension of the binding member insertion window 332.

  As shown in FIG. 4, the inner cam 34 has a shaft 341 at the proximal end and a push-out portion 342 for inserting the cut and raised piece P4 into the binding member insertion window 332 at the distal end. At the base end of the inner cam 34, an arm 343 for rotating the inner cam 34 is projected. The inner cam 34 is biased toward the initial posture (S) by a spring (not shown).

  As shown in FIGS. 1, 2, and 4, the binding machine body 2 includes a bottom wall 211, a front wall (not shown) that stands up from the front end of the bottom wall 211, and left and right sides that extend rearward from the left and right ends of the front wall. Synthetic resin for connecting the blade unit 3 in a space 21 s having a rear wall 214 that connects the rear ends of the left and right side walls 213 and the rear ends of the left and right side walls 213 and is positioned in front of the rear end of the bottom wall 211. A housing 21, a bottom plate 221 that contacts the lower surface of the bottom wall 211 of the housing 21, a front plate 222 that contacts the outer surface of the front wall, and left and right side plates 223 that contact the outer surface of the left and right side walls 213. A metal frame 22 that holds 21 from outside, and a space above the storage space 21 s of the blade unit 3 and the bottom wall 211 of the housing 21 that is mounted on the rear side of the frame 22. And a rear cover 2323 to be covered. The housing 21 includes a guide portion (not shown) that guides the blade unit 3 so as to be movable up and down, and a locking portion 21 a for locking the arm 343 of the inner cam 34. Further, elongated holes 213a and 223a extending in the vertical direction for inserting the drive shaft 36 are formed in the side wall 213 of the housing 21 and the side plate 223 of the frame 22.

  As shown in FIGS. 1, 2, and 4, the punch table 4 includes a lower frame 41 and an anvil 42 that is provided on the lower frame 41 and faces a gap 35 for paper insertion.

  As shown in FIGS. 1 and 2, the lower frame 41 has a main body attaching portion 411 for attaching the binding machine main body 2 to the rear portion thereof, and as shown in FIG. 4, the front surface of the anvil 42 is provided on the front portion. An anvil expression window 412 is provided for allowing the sheet insertion gap 35 to be exposed. As shown in FIG. 1, the boundary between the rear portion and the front portion has a locking wall 413 for locking the end portion of the paper P inserted into the paper insertion gap 35. An anvil 42 is attached to the lower frame 41.

  The anvil 42 is made of sheet metal, and as shown in FIG. 4, the anvil 42 cooperates with the punching blade 32 to cooperate with the punching portion 421 for making the punching hole P1 in the paper P and the cutting blade 33. The sheet P is provided with a passage hole 422 for making a cut hole P2. As described above, the anvil 42 is attached to the lower frame 41 and faces the gap 35 for paper insertion through the anvil expression window 412.

  As shown in FIGS. 1 and 2, the manual operation unit 5 has a support shaft (not shown) for supporting the binding machine body 2 at the base end portion, and an operation receiving portion 51 that receives a manual operation force at the distal end portion. Is a lever. A drive shaft 36 is mounted between the support shaft and the operation receiving unit 51.

  Next, the operation of the binding machine 1 will be described with reference to FIGS.

  In an initial state in which a manual operation force is not applied to the manual operation unit 5 from the outside and a plurality of stacked sheets P are inserted into the sheet insertion gap 35, as shown in FIG. The leading edge of the cutting blade 33 stands by at a standby position (N) separated above the paper P, and the inner cam 34 maintains the initial posture (S) accommodated in the punching blade 32.

  When the manual operation unit 5 is operated downward, the force applied to the manual operation unit 5 is transmitted to the drive shaft 36, and the elastic biasing force of the spring 6 disposed between the binding machine body 2 and the slide member 31 is transmitted. The slide member 31 moves downward together with the punching blade 32 and the cutting blade 33. As a result, as shown in FIG. 7, the punching blade 32 and the cutting blade 33 penetrate the paper P, and the punching hole P1 and the cut hole P2 are formed in the paper P. On the way, the arm 343 of the inner cam 34 is locked to the locking portion 21a of the housing 21, and the pushing portion 342 of the inner cam 34 rotates in the direction of the cutting blade 33 while pressing the cut and raised piece P4. The cut and raised piece P4 is inserted into the binding member insertion window 332 of the cutting blade 33. FIG. 8 shows a state in which the punching blade 32 and the cutting blade 33 have reached the bottom dead center, that is, the drilling position (C) that is the position that has been moved to the maximum from the standby position (N). The inner surface of the lower side portion of the second window 333 of the cutting blade 33, that is, the edge shaping part 333 a is positioned below the lower surface Pb of the paper P positioned at the lowermost end among the papers P overlaid on the plurality of sheets. . Therefore, the cut edge P2a of the cut hole P2 that is inclined and deformed so as to flow downwardly enters the second window 333 in a state where a part of the cut edge P2a bulges out. When the operation with respect to the manual operation unit 5 is released from this state, the slide member 31 is moved upward by the biasing force of the spring 6, and the punching blade 32 and the cutting blade 33 start to move in the pulling direction. When the cutting blade 33 moves slightly upward from the bottom dead center, the cutting edge P2a entering the second window 333 comes into contact with the inner surface of the window, that is, the edge shaping part 333a, and the cutting edge P2a has a sheet of paper. An action of reversing direction is added to the upper surface Pa side of P. Further, when the cutting blade 33 moves in the extraction direction, as shown in FIG. 9, the inner surface of the lower side portion of the second window 333, that is, the edge shaping portion 333a moves to the upper surface Pa side of the paper P, and the cutting The edge P2a is inverted to a state of being inclined and deformed so as to fly upward. Thereafter, as shown in FIG. 10, the cut and raised piece P4 engaged with the binding member insertion window 332 is pressed against the inner surface 332a of the lower side portion of the binding member insertion window 332, and the plurality of sheets P are stacked. It will be in the state which contact | connected the lower surface Pb of the paper P located in a lower end. At this stage, the inner cam 34 is released from the state of being locked by the locking portion 21a, and is returned to the initial posture (S) by the elastic biasing force of a spring (not shown). When the cutting blade 33 further moves up from this state, the tip end portion P4a of the cut and raised piece P4 is drawn into the cut hole P2, and the operation of withdrawing the cutting blade 33 from the cut hole P2 causes the upper surface Pa side of the paper P. 11, the binding of the paper P by the cut and raised pieces P4 is completed as shown in FIG. 11, and the punching blade 32 and the cutting blade 33 are returned to the standby position (N).

  That is, according to the configuration of the present embodiment, after the end edge P4a of the cut and raised piece P4 is drawn into the cut hole P2 after the cut end edge P2a has been inverted and deformed so as to be inclined and deformed upward. The operation of inserting through the cut hole P2 is performed. That is, during the extraction operation, there is a time when a load is generated for reversing the cutting edge P2a in the direction of the extraction operation, and a time when a load is generated when the cut and raised piece P4 is inserted through the cut hole P2. The load on the cutting blade 33 is distributed without overlapping. In other words, the total amount of load generated when the cutting edge P2a is reversed and deformed in the direction of the extraction operation and the load generated when the cut and raised piece P4 is inserted into the cut hole P2 and led out to the upper surface Pa side of the paper P. However, since these loads act on different portions of the cutting blade 33 at different times, the force applied to the cutting blade 33 during the extraction is dispersed. Accordingly, it is possible to solve the problem that a large extraction force may be required during the extraction operation.

  That is, the elastic urging force of the spring 6 used in the extraction operation can be reduced as compared with the conventional one. Therefore, the spring 6 having a small repulsive force can be used. Therefore, a large force is applied when a manual operating force for forming the cut hole P2 against the repulsive force of the spring 6 is applied to the operating portion. The problem that it may be necessary can be solved.

  Furthermore, since the inner surface of the lower side portion that is a part of the second window 333, that is, the edge shaping portion 333a is located above the binding member insertion window 332, that is, on the proximal end side of the cutting blade 33, Compared to the above, the cutting edge P2a can be reversed in the direction of the extraction operation nearer to the region where the repulsive force of the spring 6 is the largest. For this reason, the repulsive force of the spring 6 can be used more efficiently than the conventional one, and the size reduction of the spring 6 can be promoted also from this point.

  Since the cut and raised piece P4 cut and raised from the paper P is used as a binding member, a plurality of papers P are bound to each other to form a booklet B. Therefore, a binding member separate from the paper P is used. There is no need to prepare, and it is possible to save the trouble of separating the binding member and the paper P when the booklet B is discarded.

  The present invention is not limited to the embodiment described above.

  For example, a protrusion is cut and raised from the blade body of the cutting blade, and an action portion that preferentially comes into contact with the cutting edge of the cut hole, that is, the cutting edge of the cut hole, as the edge shaping portion. You may make it function. As an example of an embodiment having such a configuration, as shown in FIG. 12, a punching hole is provided in the blade body A331, and a portion surrounded by the punching hole is folded back to one surface side of the blade body A331 to bind the binding member. A cutting blade A33 that forms the insertion window A332 and the projection A333 and uses the tip end surface of the projection A333, that is, the action portion, as the edge shaping portion A333a is conceivable. As another example of the embodiment having the above-described configuration, as shown in FIG. 13, a blade hole B331 is provided with a punching hole, and a portion surrounded by the punching hole is divided into two parts across the center in the width direction. The one part is folded back to one surface side of the blade body B331, and the other part is folded back to the other surface side of the blade body B331 to bind the binding member insertion window B332, the first projection B333, and the second projection (not shown). In addition, a cutting blade B33 is also conceivable in which the tip surfaces of the first protrusion B333 and the second protrusion, that is, the action parts are the first edge shaping part B333a and the second edge shaping part, respectively. Furthermore, as another example of the embodiment having the above-described configuration, as shown in FIG. 14, a binding member insertion window C332 and a punching hole C33a positioned on the proximal side of the binding member insertion window C332 in the blade body C331. And a portion surrounded by the punching hole C33a is bent to one surface side of the blade body C331 to form a projection C333, and the tip surface of this projection C333, that is, the action portion is an edge shaping portion C333a. C33 is also conceivable. As yet another example of the embodiment having the above-described configuration, as shown in FIG. 15, the blade body D331 includes a binding member insertion window D332 and a punching hole D33a positioned on the proximal side of the binding member insertion window D332. Provided, and a portion surrounded by the punching hole D33a is divided into two portions across the center in the width direction, and one portion is bent to one surface side of the blade body D331 to form a first protrusion D333, Is bent to the other surface side of the blade body D331 to form a second projection D334, and the tip surfaces of these first and second projections D333 and D334, that is, the action portions are respectively set to the first edge shaping portion D333a. Further, a cutting blade D33 serving as a second edge shaping unit (not shown) is also conceivable. In addition, as another example of the embodiment having the above-described configuration, as illustrated in FIG. 16, the binding body insertion window E332 provided with the binding member insertion window E332 near the distal end is closer to the proximal side than the binding member insertion window E332. A punching hole is provided, and a portion surrounded by the punching hole is folded back to one surface side of the blade body E331 to form the second window E333 and the protrusion E334, and more specifically, a part of the second window E333. Specifically, a cutting blade E33 is also conceivable in which the action portion formed at the inner surface of the lower side portion of the second window E333, in other words, at the base end of the projection E334 is an edge shaping portion E333a.

  In addition, a large number of minute irregularities are provided on the base end side of the binding member insertion window of the blade body, and a frictional force is generated between the cutting edge of the cut hole during the extraction operation of the blade body to cut the cutting end. A friction generating part which is an action part capable of reversing the edge in the direction of the extraction operation may be used as the edge shaping part. In addition, an action portion that is preferentially brought into contact with the binding member such as a protrusion smaller than the width dimension of the binding member may be provided on the base end side of the binding member insertion window of the blade body, and this action portion may be used as an edge shaping portion.

  Even if these configurations are adopted, after the paper penetrates the blade edge of the blade body of the cutting blade and the cut hole is generated, the edge shaping section is moved further to the punching direction side than the surface of the paper in the punching direction side. Then, during the operation of moving the cutting blade in the extraction direction and extracting from the inside of the cut hole, first, the edge shaping part is made to act on the cut edge of the cut hole so that the cut edge flutters in the drilling direction side. Since the operation of inserting the binding member into the cut hole is performed after the reverse deformation from the inclined deformation state to the inclined deformation state so as to flutter in the extraction direction side, the main effect of the present invention described above is performed. Can be obtained.

  In addition, in the above-described embodiment, the cut and raised pieces cut and raised from the paper are used as the binding member. However, the binding tape that is separate from the paper is used as the binding member, and the paper is punched in the paper. An embodiment in which the binding tape is inserted into the cut hole to bind the paper is also conceivable. This embodiment will be described with reference to FIGS.

  17 to 23 are schematic cross-sectional views schematically showing the binding machine X1 of the present embodiment, and sequentially explain the binding operation by the binding machine X1.

  The binding machine X1 includes an exposed portion t1 on the upper surface Pa side, an embedded portion t2 on one surface (hereinafter referred to as an upper surface Pa) of a plurality of stacked sheets P, and an exposed portion t3 on the other surface side, that is, the lower surface Pb side. A binding tape supply mechanism X2 for supplying a binding tape T having a corresponding dimension, and an exposed portion t1 on the lower surface Pb side of the binding tape T supplied by the binding tape supply mechanism X2 are attached to the lower surface Pb side of the paper P. The binding tape attaching mechanism X4 on the lower surface Pb side to be attached to the region st1 and the cutting blade X33 for forming the cut hole P2 in the paper P are used to move the binding tape T using the movement of the cutting blade X33. A binding tape penetrating mechanism X3 that draws the embedded portion t2 and the exposed portion t3 on the upper surface Pa side into the cut hole P2 and leads the exposed portion t3 on the upper surface Pa side to the upper surface Pa side of the paper P, and this binding tape. A binding tape affixing mechanism X5 on the upper surface Pa side for affixing an exposed portion t3 on the upper surface Pa side derived from the upper surface Pa side of the paper P to the affixing region st2 on the upper surface Pa side of the paper P by the penetrating mechanism X3; It becomes.

  The binding tape supply mechanism X2 includes a feeding mechanism (not shown) that feeds the binding tape T wound around a reel or the like below the lower surface Pb of the paper P held in a stacked state, and the paper P by the feeding mechanism. And a cutting blade X21 disposed so as to be movable up and down below the binding tape T so as to cut the binding tape T supplied to the bottom of the binding tape T to a predetermined length. The cutting blade X21 can be moved between an initial position (x) and a cutting position (y) for cutting the continuous binding tape T by a cutting blade driving mechanism (not shown). Yes.

  The tape attaching mechanism X4 on the lower surface Pb side has a fixed length at a predetermined position below the lower pressing member X41 disposed below and below the lower surface Pb of the paper P, and a lower pressing member X41 arranged to be movable up and down below the attaching region st1 on the lower surface Pa side of the paper P. When the binding tape T is supplied, the lower pressing member X41 at the standby position (j) is raised to the pressing position (k), and the exposed portion t1 on the lower surface Pb side of the binding tape T is attached to the lower surface Pb side. And a lower pressing member driving mechanism (not shown) that presses against the attaching region st1.

  The binding tape penetrating mechanism X3 forms a cut hole P2 in the paper P in cooperation with the cutting blade X33 arranged to be movable up and down on the paper P so as to form the cut hole P2, and the cutting blade X33. An anvil (not shown) having a cutting blade passage portion that is a hole and a cutting blade raising / lowering function (not shown) for raising and lowering the cutting blade X33 at a predetermined timing. The cutting blade X33 has a sharp cutting edge X331a at the tip, and has the same configuration as the cutting blade in the embodiment described above with reference to FIGS. That is, it is made by punching a sheet metal material, and a blade body X331 provided with a blade edge X331a for forming the cut hole P2 in the paper P by penetrating the paper P at its tip. And the cutting tape P2 is inserted through the cut hole P2 in a state where the binding tape T is engaged when the blade main body X331 is pulled out from the cut hole P2 and is penetrated in the thickness direction. And a second window X333 provided above the binding member insertion window X332, that is, on the base end side of the blade body X331. In this embodiment, the inner surface of the second window X333 contacts the cutting edge P2a of the cut hole P2 with priority over the binding tape T when the blade body X331 is extracted from the cut hole P2. It is the edge shaping part X333a of this invention. More specifically, the second window X333 has a rectangular shape, and the inner surface of the lower side portion is the edge shaping portion X333a. The inner surface of the lower side portion of the second window X333, that is, the edge shaping part X333a, is lower than the lower surface Pb of the paper P located at the lowermost end among the papers P stacked in the cut hole P2. To move to.

  The cutting blade lifting mechanism performs the following operation. First, prior to the supply of the binding tape T, the cutting blade X33 at the initial position is lowered to allow the cutting edge X331a of the cutting blade X33 to penetrate the paper P, and then the edge shaping portion X333a of the second window X333 is provided. The sheet P is lowered to a punching position facing below the lower surface Pb of the sheet P. Next, the binding tape T is supplied by the feeding mechanism so as to pass through the window of the cutting blade on the outermost surface h1 on the front side of the paper P and set at a predetermined position, and the back side of the binding tape T by the lower pressing member driving mechanism After the exposed portion t <b> 1 is attached to the paper P, the cutting blade X <b> 33 is raised and removed from the paper P.

  The tape attaching mechanism X5 on the upper surface Pa side is separated from the cutting blade X33 in the thickness direction of the cutting blade X33, and the cutting blade X33 is in the initial position from the standby position (r) where it does not interfere with the cutting blade X33. The upper presser member X51 that moves forward and backward in the horizontal direction between the presser position (g) that passes the lower side of the paper P and contacts the upper surface of the paper P, and waits with the upper presser member X51 moved to the standby position (r). An upper pressing member driving mechanism (not shown) that moves forward from the position (r) to the pressing position (g) and presses the exposed portion t3 on the upper surface Pa side of the binding tape T against the upper surface Pa side attaching region st2 of the paper P; Become.

  The operation of this binding machine will be described with reference to FIGS.

  In an initial state in which a plurality of overlapped sheets P are inserted into the sheet insertion gap, the cutting edge X331a at the tip of the cutting blade X33 is waiting at a standby position spaced above the sheet P.

  Then, the cutting blade X33 moves toward the paper P, the cutting blade X33 penetrates the paper P, and a cut hole P2 is formed in the paper P as shown in FIG. FIG. 18 shows a state in which the cutting blade has reached the bottom dead center, that is, the drilling position. In this state, the inner surface of the lower side portion of the second window X333 of the cutting blade X33, that is, the edge shaping portion. X333a is positioned below the lower surface Pb of the paper P. Therefore, a part of the cut end edge P2a of the cut hole P2 that is inclined and deformed so as to be swung downward enters the second window X333. In this state, the binding tape T is sent out, and the binding tape T passes through the binding member insertion window X332 as shown in FIG. Further, as shown in FIG. 19, the binding tape T is cut by the cutting blade X21 of the binding tape supply mechanism X2, and the lower presser member X41 of the tape attaching mechanism X4 on the lower surface Pb side is applied to the lower surface Pa side of the paper P. The exposed portion t1 on the lower surface Pb side of the binding tape T is pressed against the attaching region st1. When the cutting blade X33 moves in the extraction direction from this state, the cutting edge P2a entering the second window X333 comes into contact with the inner surface of the window, that is, the edge shaping portion X333a, and the paper is placed on the cutting edge P2a. An action of reversing direction is added to the upper surface Pa side of P. Further, when the cutting blade X33 moves in the extraction direction, as shown in FIG. 20, the inner surface of the lower side portion of the second window X333, that is, the edge shaping portion X333a moves to the upper surface Pa side of the paper P, and the cutting The edge P2a is inverted to a state of being inclined and deformed so as to fly upward. Thereafter, the embedded portion t2 of the binding tape T engaged with the binding member insertion window X332 and the exposed portion t3 on the upper surface Pa side are pressed against the inner surface X332a of the lower side portion of the binding member insertion window X332, and are applied to the lower surface Pb of the paper P. It will be in contact. When the cutting blade further moves up from this state, as shown in FIG. 21, the embedded portion t2 of the binding tape T and the exposed portion t3 on the upper surface Pa side are drawn into the cut hole P2, and the cutting blade X33 is cut into the cut hole P2. As shown in FIG. 22, the exposed portion t3 on the upper surface Pa side of the binding tape T is completely led out to the upper surface Pa side of the paper P as well as being cut out. The blade X33 returns to the initial position. Then, as shown in FIG. 23, the tape attachment mechanism X5 on the upper surface Pa side operates, and the exposed portion t3 on the upper surface Pa side of the binding tape T is pressed against the attachment region st2 on the upper surface Pa side by the upper pressing member X51. .

  That is, even with such a configuration, after the reverse end of the cutting edge P2a is inclined and deformed upward, the embedded portion t2 of the binding tape T and the exposed portion t3 on the upper surface Pa side are cut. The operation of drawing into the hole P2 and inserting through the cut hole P2 is performed. That is, during the extraction operation, a time when a load for reversing the cutting edge P2a in the direction of the extraction operation and a time when a load generated when the binding tape T is inserted through the cut hole P2 overlap. Instead, the load on the cutting blade X33 is distributed. In other words, the total amount of the load generated when the cutting edge P2a is reversed and deformed in the direction of the extraction operation and the load generated when the binding tape T is inserted into the cut hole P2 and led out to the upper surface Pa side of the paper P is Although not changed from before, since these loads act on different portions of the cutting blade X33 at different times, the force applied to the cutting blade X33 at the time of extraction is dispersed. Therefore, a large extraction force is not required during the extraction operation.

  In addition, what is described below can be considered as a cutting blade raising / lowering mechanism of the binding machine X1 mentioned above, referring FIGS. For example, like the binding machine 1 described above with reference to FIGS. 1 to 11, the blade unit including the cutting blade X33 is stored in the housing of the binding machine body, and a spring is disposed between the housing and the housing. A manual operating force for forming the cut hole is provided by penetrating the cutting blade against an elastic biasing force of the spring, and when the operating force applied to the manual operating portion is deenergized, A configuration in which the cutting blade is extracted from the paper using an elastic biasing force is conceivable. In this case, it is considered that manual operation force is also used for the operation of the binding tape supply mechanism X2 and the tape attaching mechanisms X4 and X5. Further, as another example, a motor for driving the cutting blade upon receiving electric power is provided, and the operation for drilling a cut hole in the cutting blade using the power from this motor and the cutting blade from within the cut hole It is also possible to perform an operation of extracting the. In this case, the binding tape supply mechanism X2 and the tape affixing mechanisms X4 and X5 are each provided with a motor that receives power supply to drive the cutting blade, and the feeding mechanism and the lower pressing member driving mechanism are driven by the power of each motor. And what operates each of the upper pressing member drive mechanism is also conceivable.

  In addition, the binding machine described above with reference to FIGS. 1 to 11 includes a manual operation unit that receives an operation force for forming the cut hole by penetrating the cutting blade through a sheet held on a punch base. A spring for pulling out the cutting blade from the paper when the operating force applied to the manual operation section is de-energized, and using the elastic biasing force of the spring to pull out the cutting blade from the paper It has a configuration in which the cut and raised pieces as binding members are inserted through the cut holes, but it is equipped with a motor that drives the cutting blades upon receiving power, and the cutting holes are drilled into the cutting blades using the power from this motor. You may apply this invention to the binding machine which performs the operation | movement to perform and the operation | movement which extracts a cutting blade from the inside of a cut hole. If it is such, the electric power required instantaneously when performing the operation | movement which extracts a cutting blade from the inside of a cut hole is small, Therefore Therefore, a smaller motor can be utilized.

  Each of the above-described binding machines is a mode in which only the cutting blade is moved to punch a cut hole in the paper, but the paper is moved in a direction approaching the cutting blade with the cutting blade fixed. By moving the paper and cutting the paper through the cutting blade, or by cutting the paper and the cutting blade in the direction of approaching the paper, and passing the paper through the cutting blade. An embodiment in which a cut hole is formed in a sheet may be used.

  In addition, the shape of the cut hole is not limited to the slit-like shape that forms a straight line as described above, but may be a slit-like shape in which both end portions are inclined toward the folding direction of the binding member. It may consist of a first slit for mainly engaging and a second slit that branches off from the middle of the first slit and extends in a direction opposite to the folding direction of the binding member. Further, when the binding member is a cut and raised piece cut and raised from the paper, the shape of the binding member is not limited to the U-shape as described above, and the distal end portion is larger than the width dimension of the proximal end portion. It may have a shape with a larger width dimension.

  In addition, various modifications may be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1, X1 ... Binding machine 33, A33-D33, X33 ... Cutting blade 331, A331-D331, X331 ... Blade main body 332, A332-D332, X332 ... Binding member insertion window 333, X333 ... Second window 333a, A333a -D333a, X333a ... Edge shaping part P2 ... Cut hole P4 ... Cut and raised piece (binding member)
T ... Binding tape (binding member)

Claims (5)

A blade body provided with a blade edge at its tip to form a cut hole in the paper by reciprocating relative to the paper and penetrating the paper;
The blade body is provided so as to penetrate in the thickness direction, and the binding member is inserted through the cut hole in a state where the binding member for binding paper is engaged when the blade body is extracted from the cut hole. A binding member insertion window;
Edge shaping which is provided on the base end side of the blade body with respect to the binding member insertion window and contacts the cutting edge of the cut hole with priority over the binding member when the blade body is extracted from the cut hole. A cutting blade for a binding machine, characterized in that the cutting blade is provided with a section. The cutting blade of a binding machine according to claim 1, wherein the edge shaping part is a part of a second window provided on a proximal end side of the blade body with respect to the binding member insertion window. The cutting blade of a binding machine according to claim 1, wherein the edge shaping part is an action part provided on a protrusion provided by cutting and raising from the blade body and facing the direction of the extraction operation. A cutting blade according to claim 1, 2 or 3, and a punch table for holding paper, and the paper is removed by passing the cutting blade through the paper held on the punch table. A binding machine configured to be bound by the binding member. The cutting blade according to claim 1, 2, or 3, a punch table for holding paper, and an operation force for forming the cut hole by penetrating the cutting blade through the paper held by the punch table. A binding machine comprising: a manual operation unit that receives a spring; and a spring for removing the cutting blade from a sheet when an operation force applied to the manual operation unit is deenergized.

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