JP2009153418A - Horticultural binder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a horticultural binder capable of always and surely pulling back a binding tape when binding only by binding operation of an object to be bound, and eliminating loosening of a binding tape wound around an object to be bound. <P>SOLUTION: This horticultural binder has a movable shaft 33 which is engaged with a binding tape T and set movably between a loosening position and a tightening position of the binding tape T arranged in a binder body 1, a trigger means which moves the movable shaft 33 from a tightening position to a loosening position to lock when closing a clincher arm 2 and operating the movable shaft 33 before the clincher arm 2 takes out the binding tape T in a tape reel holding part 4, and which releases lock of the movable shaft 33 just before stapling the binding tape T when the clincher arm 2 closes and operates after hanging the binding tape T around an object P to be bound, and a pulling spring 35 which energizes the movable shaft 33 to a tightening side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a horticultural binding machine, and more particularly to a horticultural binding machine that positions an object to be bound and wraps the binding tape around the object to be bound without slack.

  A horticultural binding machine is a hand-held tool having a mechanism similar to a manual stapler, and is a tool for binding vines and branches of vineyard crops such as cocoons and peppers to a column or the like (for example, see Patent Document 1).

  In such a binding machine, the binding operation is performed by opening and closing the clincher arm with respect to the binding machine body including the tape reel and the staple magazine. When the clincher arm is closed once, the stopper mechanism of the picking plate is released, and the picking plate pierces the binding tape drawn from the tape reel to the tip of the binding machine body. When the binding machine body and the clincher arm are opened, the tape is pulled out from the binding machine body side at the same time, and the binding tape is stretched between the binding machine body and the tip of the clincher arm.

  Next, in this state, the horticultural binding machine is pushed forward, and the binding material such as the vine of the crops and the column is taken into the space between the binding machine body and the clincher arm, and the binding tape is used as the binding object. Hanging around in a U shape. Thereafter, when the clincher arm is closed, the leading end portion of the binding tape overlaps the subsequent portion to form a loop.

  Finally, by strongly closing the binding machine main body and the clincher arm, staples are driven out from the staple magazine, the overlapping portions of the binding tape are stapled, and the cutter blade also protrudes to cut the binding tape. When the clincher arm is opened and the object to be bound is taken out, one cycle of the binding process is completed.

  However, when the object to be bound is taken into the space between the binding machine main body and the clincher arm and the binding tape is wrapped around, if the object to be bound is pushed too far into the space, the binding tape will be pulled out excessively. There has been a problem that slacking occurs between the object to be bound and the binding tape.

Therefore, by pulling back the excessively drawn tape and removing the slack of the tape before bundling, a mechanism that eliminates the gap between the bundling object and the tape and makes it difficult to displace the bundling objects after bundling. A bundling machine having the above has been developed (see Patent Document 2).
JP 2003-341613 A JP 2007-117055 A

  However, the slack returning mechanism is provided with a driving roller and a driven roller that sandwich the tape from both sides in a tape passage provided in the binding machine body, and rotates the driving roller during binding to move the tape in a direction opposite to the drawing direction. Since it was a structure, there exists a possibility that a binding tape may enter into the clearance gap between a roller, a roller storage case, or a roller support, the binding tape may galling, and the feeding of the binding tape may stop. Moreover, since the binding machine body is held with one hand and the driving roller is rotated with the other hand, it is difficult to hold down the object to be bound.

  The present invention solves the above-mentioned problems, and a horticultural binding machine capable of eliminating the slack of the binding tape wound around the binding object by always pulling back the binding tape at the time of binding only by the binding operation of the binding object. The issue is to provide.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a binding tape wound around a tape reel provided in a binding machine body is pulled out and opened to the front end of the binding machine body and the binding machine body. The clincher arm is stretched between the ends of the clincher arm, and the object to be bound is taken into the space between the binding machine main body and the clincher arm from the outside of the stretched binding tape to close the clincher arm. The binding tape is wrapped around the object to be bound, and the wound binding tape is pulled back by the pull-back mechanism immediately before the tip of the clincher arm comes into contact with the front end of the binding machine main body to be wrapped around the object to be bound. In a horticultural binding machine that staples the overlapping portion of the binding tape after the slack that has occurred when it is cut, and cuts the binding tape with a cutter blade The pull-back mechanism engages with the binding tape and is movable between a binding tape loosening position and a tightening position provided on the binding machine body, and a tape reel. In response to the closing operation of the clincher arm when the wound binding tape is pulled out, the movable shaft is locked by moving from the tightening position to the loosening position, and the pulling and stretching the binding tape is Trigger means for releasing the lock immediately before stapling the bundling tape in response to the closing operation of the clincher arm when being hung around the bundling object, and biasing the movable shaft toward the tightening position side And a biasing means.

  According to a second aspect of the present invention, in the first aspect, the binding machine body includes a bent portion that guides the movable shaft to the loosening position and the tightening position and is formed at the loosening position. 1 trigger groove and a second guide groove for guiding a hook engageable with the movable shaft are formed, and the trigger means is a trigger plate whose middle part is swingably supported by the binding machine body And an engagement groove formed at one end of the trigger plate, and a contact portion formed at the other end of the trigger plate and capable of contacting the tip of the clincher arm. The engagement groove moves to either a lock position for locking the movable shaft located in the bent portion or a release position for releasing the first guide groove, and operatively connects the hook and the clincher arm. Guide And the guide link moves the hook along the second guide groove in response to the closing operation of the clincher arm when the binding tape wound around the tape reel is pulled out. By moving the movable shaft engaged with the hook to the bent portion along the first guide groove and engaging with the engagement groove of the trigger plate, the binding tape is locked in the loosened position, In response to the closing operation of the clincher arm during the wrapping, immediately before the binding tape is stapled, the trigger plate is swung by pushing the contact portion of the trigger plate with the tip of the clincher arm. The engagement groove is displaced from the lock position to the release position, and the movable shaft is moved to the tightening position side by the biasing means. And butterflies.

  The invention according to claim 3 is characterized in that, in claim 1 or 2, the binding machine main body is provided with a biasing force adjusting mechanism for adjusting a biasing force of the biasing means.

  According to a fourth aspect of the present invention, in the first to third aspects, when the binding tape is wound around the object to be bound, the guide member protruding into the space is engaged with the object to be bound. A guide mechanism for positioning an object is provided.

  According to a fifth aspect of the present invention, in the fourth aspect, the guide mechanism is rotatably provided on a rotation shaft of the binding machine main body, and protrudes into the space when rotating to engage with the object to be bound. A guide member capable of being connected to one end side of the guide member and the other end side to the clincher arm side to respond to the closing operation of the clincher arm so that the guide member is connected to the space portion. And an operating plate for projecting or retracting.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the guide member includes a guide portion formed by bending the distal end side, a guide groove formed in an intermediate portion, and a rotation shaft provided in the binding machine body. A base portion rotatably provided on the operating plate, and the one end side engages with the guide groove, the rotary shaft engages with a long groove formed in an intermediate portion, and the other The end side is provided rotatably connected to the clincher arm, and when the clincher arm is operated to close, the operation plate rotates about the rotation axis, and the guide member is centered on the rotation axis. The guide part is protruded into the space part by rotating.

  According to a seventh aspect of the present invention, in the sixth aspect, the engagement shaft provided on the one end side of the operating plate and engaged with the guide groove with play, and the guide portion of the guide member project into the space portion. And an elastic member that urges and moves the guide member.

  According to an eighth aspect of the present invention, in the seventh aspect of the present invention, the elastic member has one end on the intermediate portion of the guide member and the other end on the side facing the one end across the rotation shaft of the binding machine body. When the guide member is retracted from the space portion, the guide member is positioned on the retraction side with respect to the rotation shaft, and the guide member is rotated from the middle of the tip of the guide member protruding into the space portion. It is stretched so as to be positioned on the projecting side from the moving shaft.

  According to the first aspect of the present invention, the pull-back mechanism moves the movable shaft engaged with the binding tape when the clincher arm is operated to close the clincher arm when the clincher arm pulls the binding tape from the tape reel. The shaft is moved and locked from the tightening position to the loosening position, and immediately before the binding tape is stapled in response to the closing operation of the clincher arm when the binding tape is wrapped around the object to be bound. Since it has trigger means for releasing the lock and biasing means for biasing the movable shaft toward the tightening position, the movable shaft is biased when the lock of the movable shaft is released by the trigger means. It moves to the tightening position by means. Since the movement by the urging force of the urging means is performed at a high speed, the slack of the binding tape is eliminated instantaneously.

  According to the second aspect of the present invention, the guide link moves the hook along the second guide groove in response to the closing operation of the clincher arm when the binding tape wound around the tape reel is pulled out. At the same time, the binding tape is locked in the loosened position by moving the movable shaft engaged with the hook to the bent portion along the first guide groove and engaging with the engagement groove of the trigger plate. In response to the closing operation of the clincher arm after the wire is wrapped around the object to be bound, the trigger plate is swung by pushing the contact portion of the trigger plate with the tip of the clincher arm immediately before stapling the binding tape. As a result, the engagement groove is displaced from the lock position to the release position, the lock of the movable shaft is released, and the movable shaft is tightened by the biasing means. Since it is moved to the position side, simply closing the clincher arm with one hand, the binding tape is automatically pulled back and the slack of the binding tape wrapped around the object to be bound is eliminated. Can be used freely.

  According to the third aspect of the present invention, the binding machine body is provided with the biasing force adjusting mechanism that adjusts the biasing force of the biasing means, so that the binding tape is pulled back by adjusting the biasing force acting on the movable shaft. You can adjust the force and pullback time.

  According to the fourth aspect of the invention, when the binding tape is wound around the object to be bound, a guide mechanism is provided for positioning the guide member protruding in the space portion by engaging the object to be bound. Thus, the object to be bound can be positioned and held at a position where it can be reliably slackened back. Therefore, even when the tape is pulled out excessively, the tape can be tightly bonded to the object to be bound, and a good binding state can be obtained.

  According to the invention which concerns on Claim 5, the said guide mechanism is provided in the rotation axis | shaft of a binding machine main body so that rotation is possible, it protrudes in the said space part at the time of rotation, and the guide member which can be engaged with a to-be-bound object An operation in which one end side is connected to the guide member side and the other end side is connected to the clincher arm side so that the guide member protrudes or retracts from the space portion in response to the closing operation of the clincher arm. Since the object is provided with the plate, the object to be bound can be engaged with the guide part and positioned when the clincher arm is closed after the object to be bound is taken into the space and wound around the binding tape. As a result, it is possible to easily return the slackness of the binding tape and bring the tape into close contact with the object to be bound. Further, when taking the object to be bound into the space part, the guide member is in the retracted position retracted from the space part, so that there is no obstacle during the taking-in operation.

  According to a sixth aspect of the present invention, when the clincher arm is closed, the operating plate rotates about the rotating shaft, and the guide member rotates about the rotating shaft, thereby the guide. Since the guide portion of the member protrudes into the space portion, when the clincher arm is closed and operated with one hand, the guide portion automatically protrudes. Therefore, the guide portion is moved with the other hand. There is no need.

  According to the seventh aspect of the present invention, the engaging shaft that engages with the guide groove of the guide member with play is formed on one end side of the operating plate, and the guide portion of the guide member protrudes into the space portion. Since the guide member is urged and moved by the elastic member, the object to be bound can be quickly engaged with the guide portion without delay when the clincher arm is closed.

  According to the invention of claim 8, one end of the elastic member is locked to the intermediate portion of the guide member, and the other end is locked to the side facing the one end across the rotation shaft of the binding machine body. When the guide member is retracted from the space portion, the guide member is positioned on the retracting side with respect to the rotation shaft, and from the middle of the leading end of the guide member protruding into the space portion, the rotation shaft is used. Also, the guide member can be accelerated and moved with a simple structure since it is stretched so as to be positioned on the protruding side.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of a horticultural binding machine showing an embodiment of the present invention.

  This binding machine is a combination of an elongated binding machine main body 1, a clincher arm 2 and a handle lever 3. A tape reel storage section 4 is attached to the rear of the binding machine main body 1, and the tape reel storage section 4 A horticultural binding tape T is pulled out from a tape reel (not shown) provided housed inside, and can be pulled out from a tape guide portion 5 at the tip of the binding machine body 1.

  A magazine 6 is disposed at the front of the binding machine body 1. The magazine 6 is provided with a staple launching portion 7 at the front end of the staple storage portion, like a normal stapler. The rear end of the magazine 6 is provided in the middle portion of the binding machine body 1 and supports the base portion of the clincher arm 2. It is attached to be able to rotate. The magazine 6 stores connected staples (not shown) in which gate-shaped staples are connected.

  Further, as shown in FIG. 15A, a driver plate 10 for driving the leading staple of the magazine 6 from the driving unit 7 is provided at the front portion of the binding machine body 1, and the outside of the driver plate 10 (the left hand in the drawing). (Direction), a cutter blade 11 is attached, and a tape guide portion 5 is provided on the outside thereof. Furthermore, an engagement plate 12 is formed outside the tape guide portion 5.

  As shown in FIG. 1, the base portion of the clincher arm 2 is pivotally supported by the support shaft 8, and the bent portion 13 close to the base portion is connected to the handle lever 3 through the support shaft 14 so as to intersect. Yes. The handle lever 3 includes an operation portion 3a and a link portion 3b, and the link portion 3b engages with a fixed shaft 19 protruding from the side surface of the binding machine body 1. The clincher arm 2 is urged so as to be normally opened by a spring force of a spring (not shown).

  As shown in FIG. 15A, a clincher groove 15, a receiving plate 16, and a picking plate 17 are sequentially arranged from the inner side to the outer side (the right hand direction to the left hand direction in the drawing) at the tip of the clincher arm 2. A switch plate 18 is formed on the side of the switch. The picking plate 17 swings and is provided so as to be inserted into a hole (not shown) in the center of the receiving plate 16.

  2 and 15 (a), the launching portion 7 of the binding machine body 1 and the clincher groove 15 of the clincher arm 2 are connected to the engagement plate 12 of the binding machine body 1 and the switch plate of the clincher arm 2. 18 are provided so as to correspond to each other.

  Next, the basic binding operation of the binding machine will be described. First, the clincher arm 2 is closed and operated by grasping the operating portion 3a of the handle lever 3 with respect to the binding machine body 1, as shown in FIG. Further, the switch plate 18 at the front end abuts on the engagement plate 12 at the front end portion of the binding machine main body 1 and stops, but when a little force is applied, the switch plate 18 is moved to the engagement plate as shown in FIG. 12, the picking plate 17 is swung and the tip of the binding tape T that hangs down in front of the receiving plate 16 is inserted into the hole of the receiving plate 16 to grasp the end of the binding tape T. When the handle lever 3 is opened in this state, the clincher arm 2 is opened, and the binding tape T is pulled out from the tape guide portion 5 and opened between the binding machine body 1 and the clincher arm 2 as shown in FIG. Stretched on. As shown in FIG. 4, the space S between the binding machine main body 1 and the clincher arm 2 by taking the binding object P (for example, a vine and a support of a crop) from the outside (the left hand side in the drawing) of the binding tape T. When the clincher arm 2 is closed and actuated by gripping the handle lever 3 again, the binding tape T is wrapped around the object to be bound P and overlaps the clincher groove 15 as shown in FIG. As shown in FIG. 15D, the switch plate 18 sunk by the closing operation is pressed by the engagement plate 12 of the binding machine body 1 and further sunk, and the picking plate 17 is linked with the binding tape T in conjunction with this. Since the magazine 6 is pushed up and rotated at the same time as being separated from the original position, the driver plate 10 and the cutter blade 11 are relatively projected so that the driver plate 10 staples. At the same time binds the overlapping portions of the binding tape T out Chi, the cutter blade 11 cuts the original side of the binding portion of the binding tape T. Further, as shown in FIG. 1, the handle lever 3 is opened and the clincher arm 2 is opened to operate and the object P bound by the binding tape T is removed to complete the binding operation and prepare the next binding operation. Is done.

  As described above, the switch plate 18 sinks in two stages, and in the first stage, the picking plate 17 jumps out toward the receiving plate 16, and the switch board 18 is held in that position, and further the second stage sinks. In the meantime, the picking plate 17 is separated from the receiving plate 16 and the switch plate 18 is configured to return to the original position.

  Next, in the binding machine, when the binding tape T stretched between the tip of the binding machine main body 1 and the clincher arm 2 is hung around the binding object P, the guide member 21 is placed in the space S. A guide mechanism A for projecting and positioning the binding member P by engaging the guide member 21 is provided, and after the binding tape T is wound around the binding object P, the binding tape T is reversed in the drawing direction. A pulling back mechanism B is provided to pull back the slack of the binding tape T in the direction. The binding tape T is preferably pulled back in a state in which the object to be bound P is previously guided and positioned at a predetermined position. Therefore, the guide mechanism A for the object to be bound P will be described below, and then the pull back mechanism B for the binding tape T will be sequentially described.

  As shown in detail in FIGS. 6 and 7, the guide mechanism A includes a guide member 21 rotatably provided on a rotation shaft 20 (coaxial with the fixed shaft 19) of the binding machine body 1, and the guide The member 21 includes an operation plate 22 that moves in and out of the space S in response to the rotation of the clincher arm 2, and between the guide member 21 and the binding machine body 1, the guide member A tension spring 23 is provided as an example of an elastic member that biases the operation when the tip of 21 projects into the space S.

  A guide groove 24 is formed in an intermediate portion of the guide member 21. The end of the guide groove 24 on the base side is formed wider than the tip. Further, a guide portion 25 bent in an L shape is formed at the distal end portion of the guide member 21.

  The actuating plate 22 is an elongated straight member, and a long groove 26 extending in the longitudinal direction is formed at an intermediate portion thereof. A rotating shaft 20 that supports the guide member 21 is engaged with the long groove 26. The other end side of the operation plate 22 is rotatably connected to a rotation shaft 27 provided on the clincher arm 2, and an engagement shaft 28 is fixed to one end side, and the engagement shaft 28 is a guide groove of the guide member 21. 24 is slidably engaged. As a result, the guide member 21 rotates about the rotation shaft 20, but the engagement shaft 28 that moves in response to the rotation of the clincher arm 2 can move freely within a range in which it can move in the guide groove 24. It has become. The guide member 21 is formed between the binding machine body 1 and the clincher arm 2 when the clincher arm 2 is rotated around the support shaft 8 as shown in FIG. When the clincher arm 2 is in the closed state as shown in FIG. 7, the guide portion 25 rotates so as to protrude into the space portion S. Thus, the guide portion 25 of the guide member 21 moves in and out of the space portion S in response to the opening and closing operation of the clincher arm 2.

  As described above, play is provided between the guide groove 24 and the engagement shaft 28 of the operating plate 22, and when the guide portion 25 of the guide member 21 protrudes into the space portion S, the play is performed by the tension spring 23. The guide member 21 is configured to bias the operation. That is, one end of the tension spring 23 is locked to the locking shaft 30 provided at the lower edge of the intermediate portion of the guide member 21, and the other end is locked to the locking shaft 31 provided in the binding machine body 1. ing. The two locking shafts 30 and 31 are arranged so as to face each other across the rotation shaft 20 at the base of the guide member 21. 6, when the guide portion 25 of the guide member 21 is in the retracted position for retracting from the space S, the tension spring 23 connecting the two locking shafts 30 and 31 is retracted more than the rotating shaft 20. The tension spring 23 is stretched so as to be positioned on the side, and the tension spring 23 is on the side where the tip of the guide member 21 protrudes beyond the rotation shaft 20 from the middle when the guide portion 25 of the guide member 21 protrudes into the space S. It is set to be stretched so as to be positioned on the part S side.

  The tension spring 23 is not limited to this. When the guide portion 25 of the guide member 21 is in the retracted position, a biasing force acts in a direction in which the guide portion 25 is retracted more, and when the guide portion 25 of the guide member 21 is in the position on the space S side, What is necessary is just to be provided so that the urging | biasing force may act in the direction which makes the guide part 25 protrude.

  Next, the operation mode of the guide mechanism A of the object to be bound P will be described. First, as shown in FIG. 7, the handle lever 3 is squeezed and the clincher arm 2 is closed to operate the clincher arm 2 at the tip of the binding tape. After the gripping, when the handle lever 3 is opened and the clincher arm 2 is opened and operated, the binding tape T is stretched between the binding machine main body 1 and the tip of the clincher arm 2 as shown in FIG. . At this time, in conjunction with the opening operation of the clincher arm 2, the rotation shaft 27 of the operating plate 22 moves away from the binding machine body 1, so that the operating plate 22 rises with respect to the binding machine body 1. Rotate downward as shown in FIG. Accordingly, since the tension spring 23 is located on the retracting side with respect to the rotating shaft 20, the guide portion 25 of the guide member 21 is urged in the retracting direction and is held at the position shown in FIG.

  Therefore, as shown in FIG. 7, the object P to be bound is taken in from the outside of the binding tape and introduced into the space S between the binding machine main body 1 and the clincher arm 2, and again the binding machine main body 1 and the handle. When the magazine 6 and the tip of the clincher arm 2 are brought into contact with each other by squeezing the lever 3 and closing the clincher arm 2, the binding tape T is wrapped around the object P to be bound as shown in FIGS. Further, the leading end side and the original side of the binding tape T overlap on the clincher groove 15. By the way, in response to the closing operation of the clincher arm 2, the rotating shaft 27 of the operating plate 22 moves so as to approach the binding machine body 1, so that the operating plate 22 is centered on the rotating shaft 20 as shown in FIG. Rotate in a direction parallel to the binding machine body 1. At this time, the engagement shaft 28 of the operating plate 22 moves along the lower edge of the guide groove 24 of the guide member 21, so that there is a sufficient play space between the engagement shaft 28 and the upper edge of the guide groove 24. is there. When the tension spring 23 moves to the space S side beyond the rotation shaft 20, the guide member 21 is urged so as to protrude into the space S by the spring force of the tension spring 23, and freely rotates in the play space. Since it can move, the rotation of the guide member 21 is accelerated and the guide portion 25 protrudes quickly. The guide member 21 from which the guide portion 25 protrudes is held at the position of FIG. 7 so as not to move by the rotation shaft 20 of the base portion and the engagement shaft 28 of the operation plate 22. Therefore, the object to be bound P is engaged with the guide portion 25 at the tip of the guide member 21 and positioned at a predetermined position.

  As described above, the object to be bound P taken into the space S between the binding machine body 1 and the clincher arm 2 can be positioned and held at a position where the guide member 21 can surely loosen back. Further, when the material to be bound P is taken into the space S, the guide member 21 is in the retracted position retracted from the space S, so that there is no obstacle during the taking-in operation.

  Next, after the binding tape T is wrapped around the object to be bound P and positioned at a predetermined position by the guide mechanism A, the pull-back mechanism immediately before the magazine 6 of the binding machine body 1 and the tip of the clincher arm 2 come into contact with each other. After the binding tape T is pulled back by B and the slack generated when the binding tape T is wound around the binding object P is returned, the overlapping binding tape T is stapled and cut by the cutter blade 11.

  As shown in FIGS. 8 and 9, the binding tape pull-back mechanism B engages with the binding tape T and moves between the loosening position and the tightening position of the binding tape T provided in the binding machine body 1. A movable shaft 33 that is provided, and a trigger plate (trigger that unlocks the movable shaft 33 immediately before stapling the binding tape T after the movable shaft 33 is moved from the tightening position to the loosened position and locked. Means) 34 and a tension spring 35 as an example of biasing means for biasing the movable shaft 33 toward the tightening position. The biasing means is constituted by a tension spring 35 as an example, but is not limited to this, and any means may be used as long as a tension force can be applied between a locking plate 44 and an adjusting bolt 41 described later.

  That is, the spring holder 36 is fixed to the upper part of the binding machine body 1. A first guide groove 37 and a second guide groove 38 are formed substantially parallel to the longitudinal direction of the binding machine body 1 at the base of the spring holder 36. A bent portion 40 that is bent upward is formed at the tip of the first guide groove 37.

  Further, a tape guide 43 slidable along the upper surface of the binding machine body 1 is provided between the spring holder 36 and the tape reel housing 4. The binding tape T pulled out from the tape reel storage unit 4 passes through the lower part of the tape guide 43, is wound around the movable shaft 33 from the tip of the tape guide 43, and is then wound around the tape guide unit 5. The tape guide 43 is slid to the tape reel housing 4 side where the binding tape T is more easily routed than the position shown in FIG. After being wound around and engaged with the movable shaft 33, the tape guide 43 is slid to the position shown in FIG. 1 to move the binding tape T to the position shown in FIG.

  The movable shaft 33 is slidably engaged with the first guide groove 37. A binding tape T is wound around the movable shaft 33. Therefore, when the movable shaft 33 moves along the first guide groove 37 to the bent portion 40, the binding tape T is in a slack state, and the movable shaft 33 extends along the first guide groove 37. When moving to the rear end side (tape reel storage unit 4 side), the binding tape T is in a tightened state. Therefore, the front end (the position shown in FIGS. 1 and 8, etc.) of the first guide groove 37 is the loosening position, and the rear end (the position shown in FIGS. 5, 11 and the like) is the tightening position.

  The movable shaft 33 is provided on the locking plate 44. On the other hand, an adjustment bolt 41 is provided at the inclined upper end of the spring holder 36, and a tension spring 35 is locked to the locking plate 44 and the adjustment bolt 41. Thereby, the movable shaft 33 is urged by the tension spring 35 so as to always move to the tightening position side.

  An adjustment nut 42 is screwed onto the adjustment bolt 41, thereby constituting a tension adjusting mechanism as an urging force adjusting mechanism for adjusting the tension as an example of the urging force of the tension spring 35. By rotating the adjustment nut 42, the adjustment bolt 41 can be screwed to adjust the tension of the tension spring 35.

  Next, the hook holder 45 is slidably disposed in the second guide groove 38. As shown in FIG. 12, shaft holes 46 and 46 are formed at the front and rear portions of the hook holder 45, and a hook housing portion is formed at the rear portion. The shaft holes 46 and 46 are provided with a hook 48 and an operating link 50 as a guide link via parallel pins 47 and 47 shown in FIG. The tip of the hook 48 is formed in an acute shape in a V shape and is disposed so as to be engageable with the movable shaft 33 and is urged clockwise in FIG. 9 by a spring (not shown). It is engaged with the protruding wall 51 formed in.

  Further, the hook holder 45 and the clincher arm 2 are operatively connected via an operation link 50. The upper end of the operating link 50 is attached to the parallel pin 47 at the front portion of the hook holder 45, and the lower end is attached to the rotating shaft 27 at the base portion of the clincher arm 2.

  The trigger plate 34 is bent into a substantially “<” shape, and as shown in FIGS. 8 and 13 (a) and 13 (b), the middle portion swings on a swing shaft 51 provided in the binding machine body 1. An engagement groove 52 is formed at one end, and a projecting piece 53 as a contact portion is formed at the other end. At the time of swinging, the engaging groove 52 faces the bent portion 40 bent upward from the front end of the first guide groove 37 of the spring holder 36 and locks the movable shaft 33 moved into the bent portion 40 (FIG. 13). (Position of (a)) and a release position (position of FIG. 13B) that opens the movable shaft 33 to the first guide groove 37, and is attached to the swing shaft 51. The torsion coil spring 54 is biased so that the engagement groove 52 faces the bent portion 40. Further, the projecting piece 53 is disposed at substantially the same position as the engagement plate 12 of the binding machine body 1 and normally protrudes below the engagement plate 12 so as to be able to contact the switch plate 18 of the clincher arm 2 together with the engagement plate 12. Yes. Thereby, after the projecting piece 53 comes into contact with the switch plate 18, when the clincher arm 2 further operates in the closing direction, the trigger plate 34 swings against the spring force of the torsion coil spring 54. After the trigger plate 34 swings, the switch plate 18 operates.

  Next, an operation mode of the binding tape pullback mechanism B having the above-described configuration will be described. First, as shown in FIGS. 2 and 8, when the clincher arm 2 is operated to close, the operating link 50 that responds to the hook holder 45 moves the hook 48 along the second guide groove 38. Since the hook 48 is engaged with the movable shaft 33 located in the first guide groove 37, the movable shaft 33 is moved along the first guide groove 37 against the tension of the tension spring 35. Before the movable shaft 33 finally moves to the loosened position of the front end of the first guide groove 37 as shown in FIG. 9, the protruding piece 53 of the trigger plate 34 is clinchered as shown in FIG. Since the arm plate 2 is pressed in contact with the switch plate 18, the trigger plate 34 swings against the spring force of the torsion coil spring 54, and is moved to the loosened position at the front end of the first guide groove 37 as shown in FIG. 9. The moved movable shaft 33 and the engaging groove 52 are engaged. When the clincher arm 2 is further operated in the closing direction, the switch plate 18 is pressed against the engagement plate 12 and sinks as shown in FIG. 15C, and the picking plate 17 grips the binding tape T. As shown in FIGS. 3 and 10, when the handle lever 3 is released and the clincher arm 2 is opened and operated, the projecting piece 53 of the trigger plate 34 is also released, as shown in FIG. The engaging groove 52 swings to the original position, and the movable shaft 33 engaged with the engaging groove 52 is pulled up by the bent portion 40 and locked at the lock position. At this time, the upper end of the hook 48 is engaged with the lower surface of the movable shaft 33 (see FIG. 9). 3 and 10, the binding tape T is stretched between the binding machine main body 1 and the tip of the clincher arm 2, so that it is wound around the movable shaft 33 at the loosening position in a slack state. The binding tape T is in a tension state again.

  Further, the object P to be bound is taken in from the outside of the binding tape T and introduced into the space S between the binding machine main body 1 and the clincher arm 2 (see FIG. 4), and again the binding machine main body 1 and the handle lever 3 When the clincher arm 2 is closed and operated, the binding tape T is wound around the object P and the guide portion 25 of the guide member 21 protrudes (see FIG. 7). The object to be bound P is engaged with 25 and positioned at a predetermined position. When the handle lever 3 is further grasped, the switch plate 18 at the tip of the clincher arm 2 pushes up the protruding piece 53 at the tip of the trigger plate 34 as shown in FIG. 13B, so that the trigger plate 34 swings. Then, the engaging groove 52 moves to the lower release position, and the movable shaft 33 is forcibly opened to the first guide groove 37. For this reason, as shown in FIG. 11 and FIG. 13C, the movable shaft 33 is quickly pulled back to the return position at a high speed by the spring force of the tension spring 35. The binding tape T is substantially parallel before and after the movable shaft 33. At this time, the hook 48 is left behind, and the binding tape T engaged with the movable shaft 33 is also pulled in the pull-back direction, so that the slack of the binding tape T wound around the object P is pulled back. Therefore, when the handle lever 3 is further firmly squeezed, the picking plate 17 returns to the initial position, and the driver plate 10 and the cutter blade 11 protrude and bind a predetermined portion of the binding tape T as shown in FIG. And cut almost simultaneously.

  Thereafter, when the handle lever 3 is opened and the clincher arm 2 is opened and actuated, the articles P bound by the binding tape T can be removed, and the binding operation is completed. When the hook 48 returns to the initial position along the second guide groove 38 in conjunction with the opening operation of the clincher arm 2, the hook 48 comes into contact with the movable shaft 33 at the tightening position. Then, the inclined surface 48 a at the tip of the hook 48 is pushed down by the movable shaft 33, turns around the lower surface of the movable shaft 33, goes around the movable shaft 33 again, and is attached by a spring (not shown). The hook 48 stands up by the force and engages with the protruding wall 51 and engages with the movable shaft 33 to prepare for the next bundling operation.

  By the way, the binding machine main body 1 is provided with a leaf spring 60 that prevents the binding tape T from being sent out from the tape reel housing portion 4 side when the binding tape T is pulled back to prevent loosening. As shown in FIG. 14, the leaf spring 60 is formed with a mounting portion 55 fixed to the binding machine body 1 at the center, a check claw 56 is formed on the front side, and the rear side is inclined upward. The rear end portion 57 is bent downward. As shown in FIG. 10 and the like, it is arranged between the tape guide 43 and the tape guide 43 stretched between the tape guide portion 5 and the movable shaft 33 of the binding machine body 1, and the mounting portion 55 is a rivet or the like. It is fixed to the binding machine body 1 by appropriate means. Accordingly, as shown in FIG. 13A, the check pawl 56 of the leaf spring 60 can be engaged with the binding tape T, and the rear end portion 57 of the leaf spring 60 is engaged with the arcuate surface of the tip of the tape guide 43. Are arranged as possible. On the other hand, the trigger plate 34 is provided with a pin 58 and a projection 59 for operating the leaf spring 60 in the vertical direction.

  According to the above configuration, when the clincher arm 2 is closed and the movable shaft 33 is unlocked and the binding tape T is pulled in the tightening direction, as shown in FIGS. The plate 34 swings, the engaging groove 52 is displaced to the release position, and the pin 58 of the trigger plate 34 pushes the front end side of the leaf spring 60 away from the binding tape T so that the check pawl 56 and the binding tape T are pressed. At the same time, the projection 59 of the trigger plate 34 pushes down the rear end side of the leaf spring 60 to bend and press the rear end portion 57 against the arcuate surface 61 of the tape guide 43 to bind the binding tape. Press T strongly. Accordingly, the front side of the binding tape T with respect to the movable shaft 33 can move in the pull-back direction, but the rear side of the movable shaft 33 is restricted from being pulled out from the tape reel 4, so that the binding tape T becomes the object P to be bound. Only the portion that has been slackened by winding is pulled back, and slackening is effectively performed.

  When the clincher arm 2 is in the open state, the leaf spring 60 is in the upper position shown in FIG. 13A, and when the binding tape T moves in the direction opposite to the pulling direction (retraction direction), the check pawl 56 Is held in the binding tape T so as not to move in the reverse direction, and the tape reel storage unit 4 is smoothly pulled out. Further, the front portion of the check claw 56 of the binding tape T is guided by the wall 62 of the binding machine body 1 so as to be slightly warped (see FIG. 9 and the like).

  As described above, according to the guide mechanism A, the object P taken into the space S between the binding machine main body 1 and the clincher arm 2 is positioned and held at a position where it can be reliably loosened back. In addition, there is no obstacle to taking the object P into the space S. Therefore, by mounting the binding tape pull-back mechanism B, it is possible to reliably perform the fastening when there is no slack between the object to be bound P and the binding tape T.

  Further, according to the retracting mechanism B of the binding tape T, it is possible to eliminate the slack of the binding tape T that is always pulled back around the binding object P during the binding.

  Further, since the guide mechanism A and the pullback mechanism B can be driven by performing a normal bundling operation, they can be operated with one hand and are easy to handle.

Side view of open state (standby state) of horticultural binding machine according to the present invention Side view of the closed state of the horticultural binding machine according to the present invention Side view of an open state (a state in which a binding tape is stretched) of a horticultural binding machine according to the present invention The side view of the taking-in state of the bound object of the horticultural binding machine according to the present invention Side view of the binding state of the horticultural binding machine according to the present invention The enlarged view which shows the principal part of the guide mechanism of the gardening binding machine which concerns on this invention Actuation mode explanatory view of the guide mechanism of the horticultural binding machine according to the present invention The enlarged view of the principal part of the pullback mechanism of the gardening binding machine which concerns on this invention Enlarged view of the main part of FIG. Enlarged view of the main part of FIG. Enlarged view of the main part of FIG. Perspective view of hook holder (A)-(c) is an operation explanatory drawing of the pullback mechanism of the binding tape of the horticultural binding machine according to the present invention. Plan view of leaf spring (A)-(d) is basic operation mode explanatory drawing by the horticultural binding machine which concerns on this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bundling machine main body 2 Clincher arm 3 Handle lever 4 Tape reel accommodating part 21 Guide member 22 Actuation plate 24 Guide groove 25 Guide part 33 Movable shaft 35 Tensile spring 37 First guide groove 38 Second guide groove 34 Trigger plate 48 Hook 50 working links

Claims (8)

A binding tape wound around a tape reel provided in the binding machine main body is pulled out and stretched between the tip of the binding machine main body and the tip of the clincher arm that opens and operates with respect to the binding machine main body. The object to be bound is taken into the space between the binding machine body and the clincher arm from the outside of the bound binding tape, and the clincher arm is closed to operate the binding tape around the object to be bound. The binding tape overlaps after returning the slack generated when the binding tape pulled back by the pull-back mechanism is pulled back around the binding object just before the tip of the clincher arm comes into contact with the tip of the binding machine body. In the horticultural binding machine that staples the part and cuts the binding tape with a cutter blade,
The pull-back mechanism includes a movable shaft that engages with the binding tape and is movable between a loosening position and a tightening position of the binding tape provided on the binding machine main body, and a winding around the tape reel. In response to the closing operation of the clincher arm when the binding tape is pulled out, the movable shaft is moved from the tightening position to the loosening position and locked, and the binding tape pulled out and stretched is bound. Trigger means for releasing the lock immediately before stapling the binding tape in response to the closing operation of the clincher arm when it is wrapped around an object, and urging means for urging the movable shaft toward the tightening position A horticultural binding machine characterized by comprising: The binding machine main body can be engaged with the movable shaft and a first guide groove having a bent portion formed at the loosened position while guiding the movable shaft to the loosened position and the tightening position. A second guide groove for guiding the hook is formed,
The trigger means includes a trigger plate having an intermediate portion swingably supported by the binding machine body, an engagement groove formed at one end of the trigger plate, and the clincher formed at the other end of the trigger plate. An abutting portion capable of abutting on the tip of the arm, and the engaging groove is opened to the lock position for locking the movable shaft located in the bent portion and the first guide groove with the swinging movement. Move to one of the release positions to
A guide link for operatively connecting the hook and the clincher arm;
The guide link moves the hook along the second guide groove in response to the closing operation of the clincher arm when the binding tape wound around the tape reel is pulled out, and at the same time engages with the hook. The movable shaft is moved along the first guide groove to the bent portion and engaged with the engagement groove of the trigger plate to lock the binding tape in the loosened position,
In response to the closing operation of the clincher arm during the wrapping, immediately before the binding tape is stapled, the trigger plate is swung by pushing the contact portion of the trigger plate with the tip of the clincher arm. The horticultural binding machine according to claim 1, wherein the engagement groove is displaced from the lock position to the release position, and the movable shaft is moved to the tightening position side by the biasing means.   The horticultural binding machine according to claim 1 or 2, wherein the binding machine main body is provided with a biasing force adjusting mechanism for adjusting a biasing force of the biasing means.   A guide mechanism is provided for positioning the object to be bound by engaging a guide member protruding into the space when the binding tape is hung around the object to be bound. The horticultural binding machine according to any one of claims 1 to 3.   The guide mechanism is rotatably provided on a rotation shaft of the binding machine main body, protrudes into the space when rotating, and engages with the object to be bound, and has one end on the guide member side. And an operating plate for connecting the other end side to the clincher arm side and operating the clincher arm closing operation to project or retract the guide member with respect to the space. The horticultural binding machine according to claim 4, characterized in that it is characterized in that   The guide member includes a guide portion formed by bending the distal end side, a guide groove formed in an intermediate portion, and a base portion rotatably provided on a rotation shaft provided in the binding machine body. The actuating plate has one end side engaged with the guide groove, the rotation shaft engaged with a long groove formed in an intermediate portion, and the other end side rotatably connected to the clincher arm. When the clincher arm is closed and operated, the operating plate rotates about the rotating shaft to rotate the guide member about the rotating shaft, and the guide portion protrudes into the space portion. The horticultural binding machine according to claim 5, wherein   An engagement shaft provided on the one end side of the operating plate and engaged with the guide groove with play, and the guide member is urged and moved when the guide portion of the guide member protrudes into the space portion. The horticultural binding machine according to claim 6, further comprising an elastic member. One end of the elastic member is locked to the intermediate portion of the guide member, and the other end is locked to the side of the binding machine body facing the one end across the rotation shaft, and the guide member is the space portion. When retracted from the position, the tension member is positioned on the retracting side with respect to the rotating shaft, and the guide member is positioned on the projecting side with respect to the rotating shaft from the middle when the tip of the guide member protrudes into the space. The horticultural tying machine according to claim 7, wherein:

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