JP6319884B2 - Tape unwinding prevention mechanism in bundling device - Google Patents

Description

  The present invention relates to a bundling device. In particular, the object to be bound attracted between a pair of arms is stretched between the pair of arms by gripping and tightening the pair of levers and rotating the pair of arms around a fulcrum. More particularly, the present invention relates to a mechanism for preventing rewinding of the binding tape.

  The binding device is used, for example, when binding a grape vine and a shelf. As such a binding device, a pliers-type binding device is well known. For example, in the bundling device described in Patent Document 1, after holding a pair of levers and holding the ends of the bundling tape with a tape pressing plate, the bundling tape is pulled out from the reel tape by returning the pair of levers to full open. The binding tape can be stretched between a pair of arms. In this state, the object to be bound is attracted between the binding tapes stretched between the pair of arms, and the pair of arms are completely closed at the timing when the pair of arms are completely closed by gripping and tightening the pair of levers again. While being bound by the staple, the binding tape near the mating portion is cut by the cutter blade.

  By the way, in the pliers type bundling device, when the pair of arms clamped is slightly returned at the stage where the bundling tape is stretched between the pair of arms, the tape holding plate of the tape holding mechanism moves forward in conjunction with this, and the reel The end of the binding tape pulled out from the tape is held between the tape receiving plate and the tape pressing plate. Here, in order to hold the end of the binding tape between the tape backing plate and the tape holding plate, it is essential that the end of the binding tape is located between the tape receiving plate and the tape holding plate. is there. In this stage, the binding allowance of the binding tape, in other words, the length of the binding tape protruding from between the pair of guide plates of the tape feeding mechanism depends on the distance between the guide plate and the cutting blade.

  However, the conventional bundling device does not include means for preventing the bundling tape in the tape feeding mechanism from returning. Therefore, immediately after the binding tape is cut and before the binding tape is held between the tape receiving plate and the tape pressing plate, for example, the binding device is swung left and right, and the tape reel rotates in the winding direction. If it does, a binding tape will be wound up by a tape reel, and the presser foot allowance of a binding tape which a tape pressing plate requires cannot be ensured. In this case, the operator needs to interrupt the bundling operation and pull out the bundling tape from the reel tape, and the operability and work efficiency are significantly reduced. Further, when the binding tape is cut with a cutting blade, a relatively strong tension is applied to the binding tape, so that the binding tape needs to be held firmly. When the cutting blade is pressed against the bundling tape in a state where the holding power of the bundling tape is insufficient, the bundling tape may only be fed out from the reel tape, and the bundling tape may not be cut.

JP 2007-117055 A

  Accordingly, the present invention has been made in view of the above circumstances, and is a bundling device that can improve operability by reliably securing a tape press margin of a tape holding mechanism and can improve the cutting performance of a bundling tape. It is an object of the present invention to provide a tape unwinding prevention mechanism.

In order to solve the above problems, a bundling device of the present invention has a tape rewind prevention mechanism, specifically, a pair of arms rotated around a fulcrum by gripping and tightening a pair of levers, and a bundling A tape support mechanism that supports the tape so that it can be pulled out; a tape supply mechanism that is provided on one arm and from which the binding tape drawn out from the tape support mechanism is supplied; and a tape supply mechanism that is provided on the other arm and from the tape supply mechanism. A tape holding mechanism that holds an end portion of the binding tape that has been fed out, and a tape crimping mechanism that crimps a mating portion of the binding tape that has been fed out from the tape feeding mechanism, and is attracted between the pair of arms. In the binding device in which the object to be bound is bound by the binding tape stretched between the pair of arms, the binding tape has an adhesive surface on one side In the adhesive tape, the tape crimping mechanism is provided on the one arm and supported so as to be movable in the tape crimping direction, and is provided on the other arm and cooperates with the movable unit. A first guide portion provided on the movable portion for guiding a non-adhesive surface of the binding tape; and an adhesive surface of the binding tape provided on the movable portion. A second guide part that guides the first guide part, and a pressing part that is provided on the one arm and is disposed so as to face the non-guide surface of the second guide part. When the portion is pushed by the fixing portion, the pressing portion presses the second guide portion so that a gap between the first guide portion and the second guide portion is narrowed , and the tape The holding mechanism is attached to the one arm. An operation plate to be operated, a movable plate that operates by operating the operation plate, a tape pressing plate that is linked to the movable plate, and a guide plate that guides the operation of the tape pressing plate, The ribs are formed on the operation plate .

  According to the present invention, it is possible to provide a tape rewinding prevention mechanism in a bundling device capable of improving the operability and improving the cutability of a bundling tape by securing a tape press margin of the tape holding mechanism. Can do.

It is a perspective view of the bundling device concerning this embodiment. It is explanatory drawing of the binding apparatus which concerns on this embodiment, and is a perspective view of the front-end | tip part of a 1st arm. It is explanatory drawing of the binding apparatus which concerns on this embodiment, and is an exploded perspective view in which the components attached to an upper side plate are shown. It is explanatory drawing of the binding apparatus which concerns on this embodiment, and is a figure which shows the state which the edge part of a binding tape protrudes from the tape feeding mechanism. It is explanatory drawing of the binding apparatus which concerns on this embodiment, and is a figure which shows the state by which the 2nd guide plate is pressed by the rib.

An embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a bundling device 1 according to this embodiment. The bundling device 1 squeezes the pair of levers 2 and 3 and rotates the pair of arms 4 and 5 around the fulcrum 6, thereby attracting the object to be bound between the pair of arms 4 and 5 (not shown). Is a so-called pliers-type binding device 1 that is bound by a binding tape 7 stretched between a pair of arms 4 and 5.

  Referring to FIG. 1, the bundling device 1 includes a tape support mechanism 8 that supports a bundling tape 7 (hereinafter referred to as “reel tape”) wound around a tape reel so as to be drawable. The tape support mechanism 8 is formed between the first lever 2 and the first arm 4 and includes a tape storage portion 9 that stores the reel tape, and a spool that is provided in the tape storage portion 9 and on which the reel tape is mounted ( And a tape cover 10 that is opened when the reel tape is mounted on the spool.

  Referring to FIG. 1, the binding device 1 includes an upper side plate 11 attached to the first arm 4. Referring to FIG. 3, the upper side plate 11 is a sheet metal member extending along the first arm 4, and the proximal end side (right side in FIG. 3) of the first arm 4 is pulled out from the reel tape. A first resin roller 12 that supports the non-adhesive surface of the binding tape 7 is provided. The first resin roller 12 is rotatably supported by a shaft 13, and both ends of the shaft 13 are supported by the upper side plate 11. In addition, washers 14 are attached to both ends of the shaft 13 to prevent the shaft 13 from moving in the axial direction relative to the upper side plate 11.

  At the end of the upper side plate 11 on the distal end side (opposite to the base end side) of the first arm 4, tape guide plates 15 for guiding both ends in the width direction of the binding tape 7 drawn from the reel tape are provided. Provided. The tape guide plate 15 is a member made of synthetic resin, and a second resin roller 16 that supports the non-adhesive surface of the binding tape 7 drawn from the reel tape and passed through the first resin roller 12 is provided at the tip. It is done. The second resin roller 16 is rotatably supported by a shaft 17, and both ends of the shaft 17 are supported by a tape guide plate 15. In addition, washers 48 (see FIG. 2) are attached to both ends of the shaft 17 to prevent the shaft 17 from moving in the axial direction relative to the tape guide plate 15. The tape guide plate 15 is fixed to the upper side plate 11 by two screws 18.

  Referring to FIGS. 1 and 2, the bundling device 1 has a tape feeding mechanism 19 that feeds the bundling tape 7 that is pulled out from the tape reel and guided by the tape guide plate 15. The tape feeding mechanism 19 is configured by an upper mechanism attaching plate 20 attached to the upper side plate 11. The tape feeding mechanism 19 includes a first guide plate 21 (first guide portion) that guides the non-adhesive surface of the binding tape 7 and a second guide that guides the adhesive surface of the binding tape 7 guided by the first guide plate 21. And a plate 22 (second guide portion). In this embodiment, the binding tape 7 is slid to the side by operating the finger with the finger, so that the binding tape 7 enters the tape feeding mechanism 19 from the opening 23 between the first guide plate 21 and the second guide plate 22. It is possible to insert.

  Referring to FIG. 3, the upper mechanism mounting plate 20 is a sheet metal member, and is fixed to the upper side plate 11 by two screws 18 and two screws 24. The two screws 18 are fastened together with the tape guide plate 15. The first guide plate 21 is a sheet metal member, and a side wall 21B disposed so as to face the side wall 21A having a guide surface is fixed to a movable plate 25 described later by screws 28. Further, the second guide plate 22 is a member made of synthetic resin, and is fixed to the first guide plate 21 with screws 29. The first guide plate 21 has a pair of projections 27 of the movable plate 25 that are members made of synthetic resin fitted in a pair of holes 26 provided in the side wall 21B, and then the pair of projections 27 is formed. It is positioned (rotated) with respect to the movable plate 25 by heat melting.

  The bundling device 1 has a tape crimping mechanism that pressurizes and presses the mating portion of the bundling tape 7. The tape crimping mechanism includes a movable unit (movable part) provided at the tip of the first arm 4 (one arm) and a tape crimping plate 30 (fixed part) provided at the tip of the second arm 5 (other arm). And). The movable unit is fixed to the upper mechanism mounting plate 20 by a movable plate 25 that is a member made of synthetic resin, a tape pressing plate 31 that is fixed to the movable plate 25 using screws 28, and two screws 32. A movable plate guide 33 that supports the tape pressing plate 31 so as to be movable in the tape pressing direction (vertical direction in FIG. 3), and the movable plate 25 is directed toward the tape pressing plate 30 with respect to the upper side plate 11 (movable plate guide 33). And a compression coil spring 34 that urges (downward in FIG. 3).

  In the tape crimping mechanism configured as described above, when the tape pressing plate 31 is lowered from above the mating portion of the binding tape 7, the convex portion at the tip of the tape pressing plate 31 is a square hole 35 (see FIG. 1). As a result, the mating portion of the binding tape 7 is firmly held by the tape pressing plate 31. The holding force of the binding tape 7 by the tape pressing plate 31 can be adjusted by selecting the spring force of the compression coil spring 34.

  2 and 3, the bundling device 1 has a cutting mechanism that cuts the vicinity of the mating portion (crimping portion) of the bundling tape 7 wound around the bundling object. The cutting mechanism has a cutting blade 36 with a serrated blade formed at the tip. The cutting blade 36 is fixed to the cutting blade fixing portion 39 of the upper side plate 11 by a cutting blade fixing plate 37 and two screws 38. Then, the cutting mechanism is lowered so that the cutting blade 36 is rubbed against the tape receiving plate 40 fixed to the tape crimping plate 30 so that the vicinity of the mating portion of the binding tape 7 held by the tape pressing plate 31 is cut. It is configured to be cut by the blade 36.

  Referring to FIG. 1, the bundling device 1 has a tape holding mechanism that holds an end portion 7A (see FIG. 4) of the bundling tape 7 drawn from the reel tape. The tape holding mechanism includes an operation plate 41 (see FIG. 3) provided at the tip of the first arm 4 and a tape press module 42 provided at the tip of the second arm 5 and cooperating with the operation plate 41. Have. Referring to FIG. 3, the operation plate 41 is fixed to the distal end portion of the upper mechanism mounting plate 20 by two screws 43.

  As is well known, when the movable plate 44 is pushed by the convex portion of the operation plate 41 at the time of bundling, the tape retainer module 42 acts as a trigger to operate the tape retainer plate 45 in conjunction with the movable plate 44. The end portion 7A of the binding tape 7 between the tape receiving plate 40 and the tape pressing plate 45 is held by the head end portion of the tape pressing plate 45 entering the slit 46 of the tape receiving plate 40. On the other hand, at the time of cutting the binding tape 7, when the movable plate 44 is pushed by the operation plate 41, this acts as a trigger and the head end portion of the tape pressing plate 45 is pulled out from the slit 46 of the tape receiving plate 40.

  Referring to FIGS. 3 and 4, the tape unwinding prevention mechanism in the present embodiment has a rib 47 (pressing portion) formed on the operation plate 41 that is a sheet metal member. The rib 47 is formed in a substantially right-angled triangle, and is arranged so that the hypotenuse 47A faces the non-guide surface 22A of the second guide plate 22. The ribs 47 are arranged so that the protruding height from the end of the operation plate 41 gradually decreases in the downward direction in FIG. Then, referring to FIG. 5, the tape unwinding prevention mechanism is configured such that when the joining portion of the binding tape 7 is crimped, the movable plate 25 (movable portion) of the crimping mechanism is pushed by the tape crimping plate 30 (fixed portion). The rib 47 and the movable plate 25, and thus the rib 47 and the second guide plate 22 are configured to be relatively moved so as to rub against each other in the pressure-bonding direction (vertical direction in FIG. 5).

  In the process of relative movement between the rib 47 and the second guide plate 22, the rib 47 slides the hypotenuse 47 </ b> A on the non-guide surface 22 </ b> A of the second guide plate 22 while moving the second guide plate 22 to the first guide. By pressing toward the plate 21, the gap between the first guide plate 21 and the second guide plate 22, in other words, the opening 23 (see FIG. 2) is crushed. As a result, the adhesive surface of the binding tape 7 located between the first guide plate 21 and the second guide plate 22 is attached to the guide surface of the second guide plate 22. The non-guide surface 22A of the second guide plate 22, in other words, the portion pressed by the rib 47 can be formed by an inclined surface or a curved surface corresponding to the oblique side 47A of the rib 47.

Next, the operation of this embodiment will be described.
First, the binding tape 7 is pulled out from the reel tape and passed between the first guide plate 21 and the second guide plate 22 of the tape feeding mechanism 19, and then the pair of levers 2 and 3 of the binding device 1 are clamped and tightened. The arms 4 and 5 are rotated (closed) around the fulcrum 6. Here, when the pair of arms 4 and 5 are closed and then returned slightly, the tape pressing plate 45 of the tape pressing module 42 operates (advances), and the head end portion of the tape pressing plate 45 is taped from above the binding tape 7. It enters into the slit 46 of the backing plate 40. Thus, the end 7A (see FIG. 4) of the binding tape 7 protruding from the tape feeding mechanism 19 is held between the tape receiving plate 40 and the tape pressing plate 45.

  Next, when the pair of levers 2 and 3 are returned to the fully opened position, the binding tape 7 drawn from the reel tape is stretched between the pair of arms 4 and 5. In this state, when the binding device 1 is operated to move toward the object to be bound, the binding tape 7 stretched between the pair of arms 4 and 5 is pushed toward the fulcrum 6 by the object to be bound, and the binding tape 7 Is pulled out from the reel tape and the object to be bound is attracted between the pair of arms 4 and 5.

  Next, when the pair of levers 2 and 3 are clamped, the convex portion of the tape pressing plate 31 of the tape pressing mechanism enters into the square hole 35 of the tape pressing plate 30 from above the mating portion of the binding tape 7, and is bound to the object to be bound. The alignment portion of the wound binding tape 7 is held, and in parallel, the tape pressing plate 45 of the tape pressing module 42 operates (retracts), and the head end portion of the tape pressing plate 45 is the slit 46 of the tape receiving plate 40. Pulled out from. At the timing when the pair of arms 4 and 5 are completely closed, the mating portion of the binding tape 7 is crimped by the tape crimping mechanism, and in parallel, the binding tape 7 held by the tape pressing plate 31 of the tape crimping mechanism is Cutting is performed by the cutting blade 36 of the cutting mechanism in the vicinity of the mating portion.

  In the tape unwinding prevention mechanism according to the present embodiment, the second guide plate 22 is pressed by the rib 47 (pressing portion) in the process in which the mating portion of the binding tape 7 is pressed by the tape pressing mechanism. The gap between the first guide plate 21 and the second guide plate 22 is narrowed. As a result, the adhesive surface of the binding tape 7 between the first guide plate 21 and the second guide plate 22 is adhered to the guide surface of the second guide plate 22, and the binding tape 7 is attached to the end 7 </ b> A (tape presser). The tape presser margin of the plate 45 is held in the tape feeding mechanism 19 in a state of protruding from the tape feeding mechanism 19.

  Therefore, when the end portions 7A of the binding tape 7 are held by the tape holding mechanism by operating the pair of levers 2 and 3 in order to continuously perform the binding operation, the end portion 7A of the binding tape 7 is a tape receiving plate. It is at a position facing 40 slits 46. Thus, the end portion 7A of the binding tape 7 pulled out from the tape reel is inserted into the slit 46 of the tape receiving plate 40 by causing the head end portion of the tape pressing plate 45 to enter the slit 46, and the tape receiving plate 40, the tape pressing plate 45, Can be reliably held between. Further, since the gap between the first guide plate 21 and the second guide plate 22 is narrowed by the tape unwinding prevention mechanism, the binding tape 7 is connected to the first guide plate 21 and the second guide plate 22 when the binding tape 7 is cut. It is pressed between and firmly fixed.

This embodiment has the following effects.
According to this embodiment, the rib 47 (formed on the operation plate 23 at the timing of crimping the mating portion of the binding tape 7, in other words, immediately before cutting the vicinity of the mating portion (crimping portion) of the binding tape 7. The tape rewinding prevention mechanism is configured so that the gap between the first guide plate 21 and the second guide plate 22 is narrowed by pressing the second guide plate 22 with the pressing portion).
As a result, the adhesive surface of the binding tape 7 between the first guide plate 21 and the second guide plate 22 is pressed against and adhered to the second guide plate 22, and the binding tape 7 is attached to the end 7A (tape presser). Is held in the tape feeding mechanism 19 in a state of protruding from the tape feeding mechanism 19.

Therefore, for example, even if the bundling device 1 is swung to the left and right and a force is applied to the tape reel to rotate in the winding direction, the bundling tape 7 is not taken up by the tape reel and the next levers 2 and 3 are operated. Thus, the end portion 7A of the binding tape 7 can be held by the tape holding mechanism, and the operability of the binding device 1 can be improved.
Furthermore, since the binding tape 7 is pressed and fixed between the first guide plate 21 and the second guide plate 22, it is possible to sufficiently apply tension to the binding tape 7 at the time of cutting, and to improve the cutting performance. Can also be improved.
Thus, the worker can continue the bundling work without stress, and the burden on the worker can be reduced and the work efficiency can be improved.
The end portion 7A of the binding tape 7 adhered to the second guide plate 22 is affected by an impact when the head end portion of the tape pressing plate 45 enters the slit 46 of the tape receiving plate 40. Is peeled off. As a result, the feeding of the binding tape 7 is not hindered.

DESCRIPTION OF SYMBOLS 1 Binding device, 2 1st lever, 3 2nd lever, 4 1st arm, 5 2nd arm, 6 fulcrum, 7 Binding tape, 8 Tape support mechanism, 19 Tape feeding mechanism, 21 1st guide plate (1st guide Part), 22 second guide plate (second guide part), 23 opening (gap), 30 tape crimping plate (fixing part), 47 rib (tape unwinding prevention mechanism, pressing part)

Claims (1)

A pair of arms rotated around a fulcrum by gripping a pair of levers, a tape support mechanism that supports the binding tape so that it can be pulled out, and the binding provided on one arm and pulled out from the tape support mechanism A tape feeding mechanism that feeds out the tape, a tape holding mechanism that is provided on the other arm and holds an end of the binding tape that is fed out from the tape feeding mechanism, and a binding tape that is fed out from the tape feeding mechanism. A binding device that includes a tape crimping mechanism that crimps the mating portion, and the object to be bound attracted between the pair of arms is bound by the binding tape stretched between the pair of arms.
The binding tape is an adhesive tape whose one surface is an adhesive surface,
The tape crimping mechanism is
A movable part that is provided on the one arm and supported so as to be movable in the tape pressing direction; and a fixed part that is provided on the other arm and cooperates with the movable part,
The tape feeding mechanism is
A first guide part provided on the movable part for guiding the non-adhesive surface of the binding tape; and a second guide part provided on the movable part for guiding the adhesive surface of the binding tape;
A pressing portion provided on the one arm so as to be opposed to the non-guide surface of the second guide portion, and the movable portion of the pressure-bonding mechanism is pushed by the fixed portion; A portion is configured to press the second guide portion to narrow a gap between the first guide portion and the second guide portion ;
The tape holding mechanism includes an operation plate provided on the one arm, a movable plate operated by operation of the operation plate, a tape press plate interlocked with the movable plate, and a guide for guiding the operation of the tape press plate. A board, and
The tape rewinding prevention mechanism in the bundling device , wherein the pressing portion is a rib formed on the operation plate .

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