JPH068005Y2 - Binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a binding device for tightly tightening an object to be bound.

(Prior Art) To explain the outline of the binding device, the binding device 1 shown in FIG.
Is designed to push the binding object from the outside against the binding tape T having one surface pulled out between the binding arm 2 and the holding means 3 and to fasten it.

As shown in the figure, the binding arm 2 is provided so as to be able to move up and down via a shaft 5 attached to a base 4. Further, the roll-shaped binding tape T is pulled out to the tip end along the guide roller 6 attached to the binding arm 2 at an appropriate position. A holding means 3 for holding the leading end of the drawn binding tape T is attached to the base 4 so as to face the leading end. The holding means 3 is
A roller 7 for holding the binding tape T and a holding member 7 ′ are provided, and a bracket 8 rotatably provided with the roller 7 is provided rotatably with respect to a shaft 9, and the roller 7 and the holding member are provided. The bracket 8 is held by a spring (not shown) so as to hold the end of the binding tape with 7 '.
Is urged to approach.

A blade for cutting the binding tape T is provided at the tip of the binding arm 2.
10 and crimping plate 11 that holds the binding tape T when cutting
And a roller for pushing the roller 7 away from the holding member 7 '.
12 is provided, and the holding means 3 is provided with a pressure receiving plate 13 that comes into contact with the crimping plate 11.

When binding the objects to be bound, the objects to be bound are pressed from the outside against the binding tape T (set with the adhesive surface facing outward) drawn between the binding arms 2 and the holding means 3. The binding arm 2 is laid down and pressed against the holding means 3. As a result, the pressure-sensitive adhesive plate 11 and the pressure-receiving plate 13 stick together the adhesive surfaces of the binding tape T, and the roller 7 is moved by the push roller 12 to separate from the holding member and release the tip of the binding tape T. Then, the binding tape T is cut by the blade 10 to complete the wrapped and bound object. The cut end of the binding tape T is again held by the roller 7 and the holding member 7'and pulled out between the binding arm 2 and the holding means 3.

In the place where the end of the binding tape T of this conventional machine is held, the adhesive surface side is in contact with the synthetic resin roller 7, and the opposite side is a plate-like member having a curved surface whose tip matches the shape of the roller 7. It is supported by the holding member 7'and held by the synergistic effect of the pressing force of both members and the adhesive force of the tape.

(Problems to be solved by the invention) However, the contact state between the roller 7 that holds the binding tape T and the holding member 7'is line contact, and the binding tape T
Is clamped only at that portion, and when the roller 7 and the clamping member 7'are rigid, even a slight deformation cannot obtain a sufficient clamping force over the entire line segment. In such a state, if too much tension is applied, the holding force of the roller 7 and the holding member 7'cannot withstand the external force for tensioning the binding tape T, and the end portion of the binding tape T comes off.

Depending on the type of objects to be bound, for example, vegetables are loosely bound so as not to hurt, but when binding the packaged products together, if the wrapping paper is slippery, firmly so that they do not slip together. Need to be tightened. In this case, the object to be bound is strongly pressed against the drawn binding tape T to apply a strong tension to the holding portion to bind it. For this reason, the gripping end often came off, and packing did not go well. Also, when it comes off, it is necessary to redo the tying, but it takes a lot of time and effort to remove the tying tape from the tying material and to tie the tying tape again to the tied material, resulting in poor workability. There is a problem.

The present invention provides a bundling device that can perform firm winding to eliminate the above inconvenience.

(Means for Solving the Problems) In order to solve the above problems, according to the present invention, a binding arm is provided so as to be able to move up and down with respect to a base, and a push roller is attached to the tip end of the binding arm. A holding means for holding the end portion of the binding tape between the rotatable base and the holding member pressed against the outer peripheral surface of the roller is provided on the base so as to face the distal end portion of the arm when lying down, and the binding arm and the In a binding device for binding a binding tape by stretching a binding tape between the holding means and again stretching the binding tape cut after binding, the outer peripheral surface of the roller has a plurality of grooves along the axis. It is characterized in that the elastic member is partially protruded and fitted into the groove at appropriate intervals, and the holding member is provided with a curved portion for engaging and pressing the elastic member.

(Operation) The above binding device holds the end of the binding tape along the width of the binding tape. The binding tape is cut every time it is bound and the end of the binding tape is held again. It is designed to be stretched. When the elastic member and the sandwiching member are pressure-bonded to each other, the curved portion of the sandwiching member closely adheres along the contact surface, and during this period, the entire surface is surely brought into contact with each other, resulting in large friction. Therefore, it is possible to firmly hold the entire binding tape end. Further, it goes without saying that the elastic member absorbs a slight deviation.

When the pressing roller moves the roller to separate the elastic member from the holding member, the binding tape is held by the groove of the roller and the pressing roller, so that the binding tape is always held. Further, the adhesive force of the binding tape and the frictional force of the elastic member work, and even if a tension is applied to the binding tape to tightly wind the object to be bound, the end portion of the binding tape is strongly held by the holding means.

(Embodiment) Next, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 shows a holding means 15 provided upright on the base 14 of the binding device, and the binding tape T is pulled out by the tip of the binding arm (not shown). When the binding arm falls, the tip of the binding arm contacts the holding means. The pressure receiving plate 16 is located above the holding means.
Further, a holding member 17 whose upper end is bent is provided on a mounting plate 19 fixed to a frame 18. Further, between the pressure receiving plate 16 and the holding member 17, the tape relief plate 20 is slidable in the vertical direction.
Is provided. In addition, the shaft 21 attached to the bottom of the frame 18
A bracket 24 having a rotary shaft 22 on the upper part and a U-shaped groove 23 on the lower part is rotatably attached to the upper part of the bracket, and the upper part of the bracket approaches the holding member 17 by a spring 25 concentrically attached to the shaft 21. Is urged to.

A pin 26 attached to the lower portion of the tape relief plate 20 is engaged with the U-shaped groove 23, and the tape relief plate 20 moves up and down as the bracket 24 rotates.

The rotary shaft 22 is fixed to the frame 18 with an E-shaped washer 27,
Further, a polygonal roller 28 formed of synthetic resin is rotatably provided. Roller 28 as shown in FIG.
A plurality of grooves 29 are formed on each polygonal surface, and a rubber member 30 as an elastic member is partially projected and fitted into the corner of the polygon. The elastic member may be provided on the holding member 17, but in this embodiment, the case where it is provided on the roller 28 will be described. Further, on both side surfaces of the roller 28, an angle regulating ratchet wheel 31 and a reverse rotation preventing ratchet wheel 32 each having a plurality of claw portions in an annular shape are provided at respective engaging portions.
31a, 32a are made to correspond to the same position and the engaging direction is reversed,
It is formed on the roller 28. The ratchet wheels 31 and 32 and the roller 28 may be separately molded and assembled. Further, a pawl 33 having a foot portion 33a that engages with the angle regulating pawl wheel 31 is rotatably provided on a shaft 34 provided on the bracket 24, and the reverse rotation preventing pawl wheel is provided.
Another claw 35 to be engaged with 32 is rotatably provided on the same shaft 34.

The pawl 33 having the foot portion 33a is biased by the spring 36 attached to the shaft 34 so as to engage with the roller 28, and the pawl 35 is biased toward the roller 28 by the spring 37 and is constantly engaged. When the rubber member 30 of the roller 28 is in contact with the holding member 17, the foot 33a of the pawl 33 is in contact with the holding member 17, so the pawl 33 is separated from the engaging portion 31a of the angle regulating pawl wheel 31. ing.

Next, the operation will be described.

The bracket 24 to which the roller 28 is attached is rotated by the force of the spring 25 to press the roller 28 against the holding member 17, and the rubber member 30 of the roller 28 holds the holding member 17 at the contact portion.
Is crimped to. At this time, the contact surface of the rubber member 30 is deformed and comes into surface contact with the holding member 17. Due to this contact state, the binding tape T is securely held and firmly held by the adhesive force of the binding tape T and the frictional force of the rubber member 30. Then, as shown in FIG. 3, the end of the binding tape T does not come off even when the binding object W to be tightened is strongly pressed against the binding tape T. Next, when the binding arm 38 is laid down, the pressure bonding plate 39 is pressed by the pressure bonding plate 39 with the object W to be bound tightly bound.
Is pressed and the binding tape T is held in a bonded state.
Then, when the binding arm 38 is further laid down, the pressing roller 40 applies a force to the roller 28 in a direction away from the holding member 17. For this reason, the push roller 40
28 is a bracket centering on the axis 21 while rotating on the axis 22
It revolves against the elastic force of the spring 25 that biases the 24. Then, the roller 28 separates from the holding member 17, and at the same time, the tape escape plate 20 moves upward to stretch the binding tape. When the binding arm 38 is further laid down and the push roller 40 descends, the nails
The foot 33a of 33 is separated from the holding member, and the claw 33 is an angle regulating claw wheel 31.
Engage with. In this state, the roller 28 cannot rotate, and the binding tape T is sandwiched between the groove 29 between the rubber members 30 of the roller 28 and the pressing roller 40. Subsequently, when the roller 28 is pushed by the pressing roller 40, the roller 28 revolves and the binding tape T is tensioned, and the blade 41 causes the binding tape T to move.
Is disconnected.

Next, when the binding arm 38 is activated, the pawl 35 engages the reverse rotation preventing pawl wheel 32 and does not rotate the roller 28, but the end of the binding tape T is held by abutting the holding member as it is. Will be pulled back to the original state. At this time,
Similar to the above, the binding member T is firmly held between the bent portion of the holding member 17 by the action of the rubber member 30.

(Effects of the Invention) Since the present invention is configured as described above, since the binding tape is always held between the elastic member and the groove arranged on the outer peripheral surface of the roller, the binding tape does not loosen and is bound. You can tighten things tightly. Further, even if the diameter of the roller is large, the elastic member in the sandwiched portion has a small curvature, so that the friction is large and the roller can be fixed securely.

[Brief description of drawings]

 FIG. 1 is a side view of a main portion of a binding device according to an embodiment of the present invention, FIG. 2 is a perspective view of a roller portion of FIG. 1, and FIG. FIG. 4 is a side view of a conventional binding device. 15 …… Holding means, 17 …… Clamping member 28 …… Roller, 30 …… Elastic member 38 …… Bundling arm T …… Bundling tape, W …… Bound object

Claims (1)

[Scope of utility model registration request] 1. A binding arm is provided so as to be able to move up and down with respect to a base, and a push roller is attached to the tip of the binding arm so as to face the tip of the binding arm when lying down and to the base. Holding means for holding the end portion of the binding tape by a rotatable roller and a holding member pressed against the outer peripheral surface of the roller is provided, and the binding tape is stretched between the binding arm and the holding means to be bound. In a bundling device for bundling objects and re-tightening the bundling tape cut after bundling, a plurality of grooves are formed along the axis on the outer peripheral surface of the roller, and an elastic member is formed in the grooves at appropriate intervals. A bundling device, characterized in that the bent portion is provided so as to project and fit in, and the holding member is provided with a curved portion for engaging the elastic member with pressure.