JPH0138010Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a binding machine for winding and binding objects to be bound using adhesive tape.

(Prior Art) Conventionally, the cut end of an adhesive tape is held between holding blocks, the tape is stretched between the holding block and a guide block, and the tape is covered with the tape stretched between both blocks. BACKGROUND ART A binding machine is known in which the objects to be bound are wound and bound with an adhesive tape by applying the object to be bound and bringing a guide block into close contact with a holding block.

In this type of binding machine, in order to securely bind the objects, it is important to position the objects close to the abutting blocks.
That is, by applying the object to be bound to the tape stretched between both blocks and positioning the object to be bound so that it is close to the two blocks that collide, the tape is wound around the object to be bound. It is necessary to minimize the gap between the winding end of the tape and the object to be bound.

However, if the objects to be bound are positioned too close to the abutting blocks, the rigid guide block may hit the objects to be tied, and there is a risk of damaging the objects, especially soft vegetables. In addition, if the objects to be bound are rigid industrial products such as iron materials, there is a risk of hindering smooth binding work, so in practice, the objects to be bound may be positioned at a certain distance from the two colliding blocks. I have no choice but to do this.

In particular, the binding machine proposed by the present applicant in Japanese Patent Application No. 58-25698, which converges the bound objects in advance before winding the tape around the bound objects, uses a rotating disk to converge the bound objects. In an automatic binding machine equipped with a bundling means that automatically positions the items close to both blocks, it is necessary to provide a certain amount of leeway in positioning the items to be bound without sacrificing reliable binding.

(Purpose) The present invention was devised in response to the above requirements, and its purpose is to provide a certain amount of leeway in the positioning of objects to be bound without sacrificing reliable binding. The goal is to provide equipment.

(Structure) In order to achieve this purpose, in the present invention,
In a binding machine that winds and binds objects to be bound with adhesive tape by bringing a guide block into close contact with a holding block, the ends of the tape wound around the objects to be bound and the ends of the tape wound around the objects to be bound and the said objects to be bound are connected. In order to close the gap between the tape crimping part of the guide block and the object to be bound, the guide block is provided with a gap closing plate that is positioned parallel to the object to be bound and has elasticity against the pressing direction of the tape crimping part. Further, a flexible elastic member having a larger elastic deformation than the gap-closing plate is provided on the gap-closing plate facing the object to be bound,
It has a configuration characterized in that it can be pressed along the outer shape of the object to be bound.

(Function) With this configuration, the flexible elastic member presses the wound tape along the outer shape of the objects to be bound without damaging them, reduces the gap between the objects to be bound and the upper surface of the tape, and at the same time The gap crushing plate acts in the vertical direction (the pressing direction of the pressure bonding member) so as to narrow the gap between the tapes at the upper and lower positions forming the gap.

Therefore, the gap between the wound end of the tape and the object to be bound is closed by making wide contact with the upper surface of the wound tape.

Therefore, even if there is a change in the placement of the objects to be bound with respect to the abutment position of the guide block and the holding block, it can be sufficiently covered, and the tape can be wrapped and bound while closely following the outer shape of the objects to be bound. .

(Example) An example of the present invention will be described below based on the drawings.

In FIG. 1, 1 is a machine frame, 2 is a leg thereof, and on the upper part of the machine frame 1, a binding means 3 and a bundling means 4 are installed at a predetermined interval in the longitudinal direction of the machine frame 1. A belt conveyor 5 is installed at the bottom of the machine frame 1. The binding means 3 has a frame 6, which is fixed to the machine frame 1. This frame 6 has opposing plate portions that face each other at intervals in the width direction of the machine frame 1, and the reference numeral 6A is written on the opposing plate portion on the front side. A cylinder device 7 as a drive source is attached to the rear part 6B of the frame 6, and this cylinder device 7
It has a function of driving the binding arm 8 and the tape rewinding mechanism 9, and the rod 10 of the cylinder device 7 is provided with a rack portion 10A in its longitudinal direction.
The frame 6 is provided with a pinion 11 that meshes with the rack portion 10A, and the rack portion 10A and the pinion 11 constitute a part of the tape rewinding mechanism 9.

Guide holes are provided in the opposing plate portion of the frame 6 at predetermined intervals in the vertical direction.
Write down. The guide holes 12 and 13 are configured to extend long in the reciprocating direction of the rod 10, and cooperate with a spring to be described later to move the binding arm 8 in a posture that draws a trajectory from the standby tilted posture to the standing posture and then to the crimp tilted posture. It forms part of the means of change. The binding arm 8 is installed between opposing plate parts, and roller insertion holes 14 and 15 are provided in its base 8A. A roller 16 is inserted through the roller insertion hole 14 , and this roller 16 is fitted into the guide hole 12 . roller 1
6 is provided with a locking shaft 17, and this locking shaft 17
One end of the spring 18 is locked to the locking pin 19', and the other end of the spring 18 is locked to the locking pin 19'.

A shaft 19 is attached to the rear end of the base 8A of the binding arm 8, and a roller 20 is rotatably supported on the shaft 19. The roller 20 is fitted into the guide hole 13, and the roller 16 and the roller 20 are is configured to reciprocate along the guide holes 12 and 13 while rotating. A roller support member 21 is provided at the tip of the rod 10, a shaft 22 is provided on this roller support member 21, a roller 23 is rotatably supported on this shaft 22, and this roller 23 is attached to the insertion hole 1.
5 is inserted. The binding arm 8 is in an upright position while the rod 10 is reciprocating, and the insertion holes 14 and 15 are provided when the binding arm 8 changes from either the tilted position or the upright position to the other. , is sized to allow the rollers 16, 23 to be displaced in the longitudinal direction of the base portion 8A.

The binding means 3 has a reel mounting plate 24, and a tape reel 25 is mounted on this reel mounting plate 24.
A binding tape 26 is attached to the tape reel 25, and the binding tape 26 is an adhesive tape. The binding tape 26 is configured to extend toward the tape holding block 27 via a guide block 8B provided at the free end of the binding arm. This tape holding block 27
is fixed to the support plate 28' and has the function of holding the cut end of the binding tape 26.
The structure is almost the same as the conventional one in which the cut end of the tape is held between a holding plate 271 and a rotor 272 that is biased in a direction that collides with the holding plate 271, so a detailed explanation thereof will be omitted. do. Note that 273 is a pressure receiving plate. The guide block 8B includes guide rollers 28, 29 and a binding tape crimping/cutting mechanism 30.
and a gap crushing member 81 are provided, and the crimping/cutting mechanism 3 provided on this guide block 8B
0 is a binding tape 26 that is wound around objects 44 to be bound, which will be described later, in cooperation with the tape holding block 27 described above.
It has a function of crimping and cutting the winding ends of each other, and its structure is almost the same as that of the conventional one, so a detailed explanation thereof will be omitted, only showing the crimping plate 30A and the cutting blade 30B. On the side of the object to be bound 44 of the crimping plate 30A which collides with the pressure receiving plate of the tape holding block 27 and crimps the wound end of the binding tape, a gap closing plate 82 made of a rigid body is attached to the crimping plate 30A as a tape crimping part. are arranged parallel to each other. This rigid gap crushing plate 82 is biased in the direction of entering between the pressure receiving plate 273 of the holding block 27 and the objects to be bound 44, and is biased toward the object to be bound 44.
It has a function of minimizing the gap G between the wound end of the binding tape 26 wound around the object 44 and the object 44 to be bound. However, this gap-closing plate 82 only needs to have elasticity against the pressing direction of the tape crimping part, so it is not a rigid gap-closing plate biased by a spring as described above, but simply a plate-shaped elastic plate. It may be a member.

Further, on one side of the gap-closing plate 82 facing the objects 44 to be bound, a gap-closing member 81 made of a flexible elastic member, such as a sponge, which has a larger elastic deformation than the gap-closing plate 82 is attached. This gap crushing member 81 is the above-mentioned rigid gap crushing plate 8.
The binding tape 26 enters between the objects 44 and the blocks 8B and 27 that collide with each other and presses the wound end of the binding tape 26, and the binding tape 26 is placed between the objects 44 and
It also has the function of compressing the gap G by pressing the binding tapes at the winding ends together.

In the middle of the guide path of the binding tape 26, the main roller 31 is made of a non-adhesive material such as silicone,
Teflon (trade name), silicone rubber, or
It is made of a knurled round iron bar to prevent the binding tape from adhering to the main roller 31 as much as possible. A main roller 31 and a follower roller 32 are provided. A sprocket 33 is provided coaxially with the main roller 31, a sprocket 34 is provided coaxially with the pinion 11, and a chain 35 is stretched between the sprockets 33 and 34 to control the rotation of the pinion 11. is the main roller 3
1. Binding tape 2
6 is sandwiched and guided between the main roller 31 and the follower roller 32.
2 constitutes a part of the tape rewinding means, and has the function of retracting the binding tape 26 in the direction of arrow A to apply tension to the binding tape 26. The tape reel 25 has a sprocket. 36 is provided and a chain 37 is spanned,
The rotation of the sprocket 33 is transmitted to the tape reel 25, and here, the winding force generated by the main roller 31 and the slave roller 32 is larger than the winding force of the tape reel 25. has been done. The main roller 31 and the follower roller 32 are provided to maintain the tension of the binding tape 26 at a predetermined value regardless of its diameter.
This means that the binding tape that has been retreated by the main roller 31 and the slave roller 32 may wrap around the outer peripheral surface of the main roller 31, or become loose between the main roller 31 and the binding tape 26 and stick to each other. The amount of binding tape that has been retracted by the main roller 31 and follower roller 32 is transferred to the tape reel 25 to prevent it from sticking.
Here, when the rod 10 moves forward, the rotation of the pinion 11 is transmitted to the main roller 31, and when the rod 10 moves backward, the rotation of the pinion 11 is not transmitted. A one-way clutch (not shown) is interposed between the main roller 31 and the pinion 33, and after the binding of the objects to be bound is completed, the binding tape 26 is transferred to the tape reel while the binding arm 8 reaches the standby tilted position. 25 so that it can be easily pulled out.

The bundling means 4 has a function of converging the objects to be bound in advance before wrapping the binding tape around the objects, and has a rotary disk 38, which is connected to a rotating shaft 39. It is attached so that it rotates together with it, and 40 is its bearing. This rotary disk 38 is provided with object placement parts 41, 42, and 43 at 120-degree symmetrical positions in the circumferential direction, and in FIG. 1, the position where the object placement part 41 is present is The position where the object to be bound is placed, the object placement section 42, is the object binding station, and the object placement section 43 is the object dropping station. 44 is an object to be bound. The rotary disk 38 is
It is rotated in the direction of the arrow B in FIG. It is said to have an arc shape. A shaft 47 is installed at a 120 degree symmetrical position on the side surface of the rotary disk 38, and a drive plate 48 is rotatably provided on this shaft 47, and the drive plate 48 has a roller 49 and a toothed portion 50. The stopper pin 5 is biased in the direction shown by a spring 51.
1' stops the rotation in the biasing direction. The roller 49 is configured to come into sliding contact with the cam surface 46 while the object placement section rotates from the placement station toward the drop station, and a gear 52 is provided on the side surface of the rotating disk 38. is configured to rotate about a shaft 53 as a fulcrum,
The bundling member 54 rotates integrally with this gear 52.
Here, the bundling member 54 is roughly composed of an arc-shaped bundling plate 55 and an elastic bundling rope 56, and the bundling member 54 is attached to the object placement section 41.
The drive plate 48 is rotated with its roller 49 in sliding contact with the cam surface 46 during the process of the objects to be bound 44 from the loading station to the binding station.
The rotation is transmitted to the gear 52 to rotate the bundling member 54, and the objects to be bound 44 are bundled while being tightened from the loading station to the binding station. After the binding is completed, the spring 51 is used during the process from the binding station to the dropping station.
The drive plate 51 is rotated by the action of , and the bundling member 54 is rotated in the direction of releasing the bundling.

Guide hole 12, 1 forming a part of posture changing means
3, one end of which is closer to the cylinder device 7 is the starting end 12A, 13A on the standby tilting position side, and the other end, which is farther from the cylinder device 7, is the terminal end 12B, 13B on the crimp tilting position side. Here, the lengths of the guide holes 12 and 13 in the longitudinal direction are the same, and the starting end 13A on the side of the standby tilted position is set so that the binding arm 8 is in a tilted state in its standby position. The terminal end 12A on the standby tilting position side is located closer to the cylinder device 7, and the terminal end 12B on the crimp tilting position side is located closer to the bundling means 4 than the terminal end 13B on the crimp tilting position side. There is. A guide roller 29 provided at the free end of the binding arm 8
It has a function of stretching the binding tape tensioned part between the tape holding block 27 and this guide roller 29 approximately horizontally when the tape holding block 27 is in the standby tilted position, and the object to be bound 44 touches the binding tape. In the process from contact to the binding station, the pressing force of the objects to be bound 44 is applied as little as possible to the part where the binding tape is stretched, and when the cylinder device 7 is driven, the binding arm 8 is held against the tape holding block. 27, the binding tape is wound around the objects 44 to be bound while drawing a trajectory from a standby leaning position to a standing position and then to a crimping leaning position, and the binding tape tensioned portion is wrapped around the objects 44 to be bound. It is wound around the object to be bound 44 so as to wrap around the object to be bound 44 over the entire circumference in the circumferential direction. When the blocks 8B, 27 collide, the elastic gap-crushing member 81 contacts the surface of the object 44 with the binding tape in between, and bends and deforms the gap between the blocks 8B, 27 and the object 44. The winding end of the binding tape 26 is entered to close the gap G between the winding ends of the binding tape 26.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, but also includes the following embodiments.

(1) In the case of a binding machine without a rigid gap-closing plate, an elastic gap-closing member may be attached directly to the crimping plate.

(2) In place of a rigid gap-closing plate, a flexible gap-closing plate made of rubber, leaf spring, etc. is provided, and an elastic gap-closing member is attached to this flexible gap-closing plate. good. To explain a flexible gap-filling plate made of a leaf spring, the longitudinal section J
It is possible to bend the plate material in a letter shape, fix the straight end to the guide block, and squeeze the gap G with the bent end.

(Effects) Since the present invention has the above-mentioned configuration, even if a certain amount of leeway is given to the positioning of the objects to be bound, the gap that occurs at the winding end of the binding tape can be minimized, and the adhesive tape can be The binding machine used can make the binding even more reliable.
On the other hand, since it is possible to give a certain amount of leeway in the positioning of the items to be bound without sacrificing reliable binding, the degree of freedom in positioning is particularly important for automatic binding machines equipped with the above-mentioned bundling means. The practical value is high because design constraints are reduced accordingly and major factors that impede smooth binding work can be eliminated.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of a binding machine to which the present invention is applied, and FIG. 2 is an enlarged side view of the main parts showing the main parts of the present invention. 8B...Guide block, 26...Binding tape,
27... Tape holding block, 44... Object to be bound, 81... Elastic gap crushing member, G... Gap.

Claims (1)

[Claims for Utility Model Registration] A guide block that guides an adhesive tape and a holding block that clamps the cut end of the tape, and an object to be bound is applied to the tape stretched between both blocks, In a binding machine that winds and binds objects to be bound with the tape by bringing a guide block into close contact with a holding block, the winding end of the tape wound around the object to be bound and the object to be bound are connected. In order to close the gap between the tape crimping part of the guide block and the object, the guide block is provided with a gap closing plate that is located parallel to the object to be bound at the tape crimping part of the guide block and has elasticity against the pressing direction of the tape crimping part. Further, a flexible elastic member having a larger elastic deformation than the gap-closing plate is provided on the gap-closing plate facing the objects to be bound, so that the wound tape can be pressed along the outer shape of the objects to be bound. A gap closing device in a binding machine characterized by: