JPH0468211B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a binding device that is improved to securely hold the cut end of a binding tape.

(Prior art) When binding objects using a binding machine that has a binding arm that can be raised and lowered on a base, the binding tape is kept under tension to obtain an appropriate binding tightening force. ing. Therefore, it is necessary to prevent the cut end of the tape from becoming unclipped due to the tension of the tape.

As a conventional binding device, for example, Japanese Patent Application Laid-Open No. 56-95811
The cutting of the binding tape and the clamping of the cut ends disclosed in the publication are carried out as follows. The cut end of the tape is held by a holding rod that is elastically pressed into a concave portion of an outer pressure-receiving member that is rotatably supported on the base side. Therefore, in the process of tilting the binding arm, the binding tape binding the objects to be bound is first crimped between the inner tape pressing member provided at the tip of the binding arm and the inner pressure receiving member provided on the base side. . Next, when the binding arm is tilted, the tape pressing rod provided on the binding arm side presses the tape pulled out from the tip of the binding arm and fits into the recess of the outer pressure receiving member to clamp the tape. Tension is applied to the tape to increase the tightness of the object to be bound, and while rotating the outer pressure receiving member, the clamping rod that has been clamping the cut end of the tape is pushed to release the clamping. As a result, the tape is held between the pressure bond between the inner tape pressing member and the inner pressure receiving member and the tape pressing rod fitted in the recess of the outer pressure receiving member, and is stretched under strong tension. When the binding arm is further tilted, the cutting blade provided on the binding arm side descends and cuts the tightly stretched tape. In this way, when the binding arm is moved in the upright direction after cutting the tape, the tape pressing rod rises, and the clamping rod moves toward the outer pressure receiving member by the elastic force of the spring, pressing the cut end of the tape and moving the tape pressing rod toward the outer pressure receiving member. It fits into the recess and clamps the cut end of the tape.

First, press the bound tape together like this,
Next, the tape is held between the tape pressing rod and the recessed part of the outer pressure receiving member, and then the cut end of the tape is released from the grip, and then the tape is cut, the binding arm is erected, and the tape is held in place by the tape pressing rod. The cutting end of the tape is held between the holding rods while holding the tape.

(Problem to be Solved by the Invention) A series of operations of the conventional binding machine described above, namely, first crimping the bound tape, then sandwiching the tape between the tape pressing rod and the recess of the outer pressure receiving member,
Next, the cut end of the tape is released, the tape is cut, the binding arm is raised, the tape is held by the tape pressing rod, and the cut end of the tape is held by the holding rod. , the tape pulled out from the end of the binding arm is always under tension. For this reason, the moment the tape is cut, the tape is stretched and the cut end of the tape is dragged, or the tying arm is raised and the tape is held by the tape pressing rod while the cut end of the tape is held by the clamping rod. During this process, the tape is stretched by the rising of the binding arm, which may cause the cut end of the tape to shift. If the cut end of the tape shifts in this way,
When the clamping rod fits into the recess of the outer pressure receiving member, there is insufficient clamping margin to clamp the cut end of the tape, and the clamping part comes off during binding, resulting in a problem that binding cannot be performed.

The present invention provides a binding device that eliminates the tension of the tape at the same time as cutting the bound tape, eliminates the dragging of the cut end of the tape, secures the clamping margin of the tape, and ensures the clamping of the cut end of the tape. It is something.

(Means for Solving the Problems) Means according to the present invention for solving the above-mentioned problems is provided with a tape crimping and cutting mechanism at the tip of a binding arm that is movably provided on the base, and on the base. A binding device comprising a tape holding means corresponding to the tape crimping and cutting mechanism, comprising: a guide frame provided at the tip of the binding arm; and a tape release plate that penetrates the guide frame and is slidable via a compression spring. a crimping plate spaced apart from the rear side of the tape relief plate and slidable relative to the guide plate via a compression spring; a guide roller provided at the upper end of the tape relief plate; A cutting blade provided on the front side of the plate forms the tape cutting crimping mechanism, and a pressure receiving plate provided on the upright plate provided on the base opposite to the crimping plate of the tape cutting crimping mechanism, and the pressure receiving plate. a clamping member fixed to the upright plate with a gap that allows the tape release plate of the tape cutting and crimping mechanism to come in and out; a swinging body swingably provided on the standup plate; and a swinging body provided on the top of the swinging body. a rotating body having a protruding surface and a rotation angle regulating surface formed on the outer periphery thereof, and the rocking body that swings and applies an elastic force so that the protruding surface of the rotary body comes into pressure contact with the clamping surface of the clamping member. The tape holding means is characterized in that the tape holding means is formed by a spring for holding the tape and a rotation angle regulating member whose tip end elastically engages with a rotation angle regulating surface of the rotating body.

(Function) Since the present invention is configured as described above, the tape pulled out from the tape reel is guided by the guide roller provided at the tip of the tape release plate and pulled out from the tip of the binding arm, and the end of the tape is pulled out from the tip of the rotating body. It is held between the protruding surface and the holding surface of the holding member, and is stretched between the tape holding means and the tip of the binding arm. When the binding arms are tilted and the objects to be bound are pressed against the tape thus stretched, the tape is wound around the objects to be bound and pressed against the lower ends of the tape release plate and the pressure bonding plate. Therefore, the upper guide roller and the lower end of the tape release plate are supported by the tape that has been pulled out under tension, and the elastic force of the compression spring applies a downward elastic force to the floating support. has been done. When the binding arm is further tilted, the bound tape is pressed between the pressure bonding plate and the pressure receiving plate, and is pushed by the lower end of the tape release plate while compressing the compression spring, and the pressure roller is rotated by the rotating body. It fits into the angle regulating surface to sandwich the tape, and at the same time swings the swinging body to release the tape from being pinched. When the binding arm is further tilted, the lower end of the tape release plate enters between the pressure receiving plate and the holding member while pushing the tape, and this entry further compresses the compression spring. This tensions the tape with a strong force, and the compression of the compression spring gives the tape release plate a downward elastic force with an even stronger force. Then, the cutting blade that tilts the binding arm descends to cut the tape. At the same time as this tape is cut, the tape release plate descends downward by the elastic force of the spring to release the cut end of the tape and loosen the tension of the tape being pulled out from the binding arm to prevent the cut end of the tape from dragging.

(Example) An example of the present invention will be described below. 1st
To explain the outline of the binding device using the diagram, the base 1
The binding arm 2 is attached to the frame 5 provided on the frame 5 via the shaft 6.
is provided to be movable up and down, and this binding arm 2 is always given an elastic force in the upright direction by a spring (not shown). A tape crimping and cutting mechanism 10 is provided at the tip of the binding arm 2, and a tape holding means 4 is provided on the base 1 at a position where the tape crimping and cutting mechanism 10 abuts when the binding arm 2 is tilted. Further, a tape reel 3 is rotatably provided on the frame 5, and this tape reel 3 rotates in the unwinding direction when the binding arm 2 is overturned by a mechanism not shown, thereby tensioning the tape during binding. .
A tape 7 is attached to this tape reel 3. 8 is a mounting table for the objects to be bound A, and 7a is a cut end of the tape.

Next, details of the tape crimping/cutting mechanism 10 and the tape holding means 4 will be explained. In FIGS. 2 and 5, a guide frame 14 is provided at the tip of the binding arm 2.
is fixed. This guide frame 14 has a through hole 1
5 is bored, and a tape release plate 12 is slidably provided through the through hole 15. The through hole 15 has a space 15 for accommodating the spring 17.
A is formed between the protrusion 12a provided on the tape release plate 12 and the stepped portion of the space 15a.
7 is intervening. A guide roller 18 is provided at the upper end of the tape release plate 12. Further, a pressure bonding plate 13 is provided on the guide frame 14 so as to be able to move in and out at a distance to the rear side of the tape release plate 12, and a projection 13a is provided on the upper part of the pressure bonding plate 13 to form a through hole 1.
The crimp plate 13 is designed not to come off from 4a. A compression spring 19 is interposed in a space 16 formed in the guide frame 14, and an elastic force is applied to the compression plate 13 so that it always projects downward. Further, a cutting blade 11 is provided in front of the guide frame 14. In this way, the tape crimping and cutting mechanism 10 is configured. Reference numeral 23 denotes a pressure roller provided in front of the cutting blade 11. Further, the binding arm 2 is provided with guide rollers 20, 21, and 22.

Next, the tape holding means 4 will be explained. In FIGS. 2 and 5, an upright plate 40 has a pressure receiving plate 43 erected on the base 1 at a position facing the pressure bonding plate 13 with the binding arm 2 tilted. Fixed. A holding member 42 is fixed to the upright plate 40 facing the upright plate 40 with a space 44 into which the tape relief plate 12 can be inserted. This clamping plate 42 has a clamping surface 42a formed therein. The rocking body 46 is swingably provided via a shaft 45 provided on the upright plate 40, and a rotation angle regulating member 47 is rotatably supported on the shaft 45. A rotating body 41 is pivotally supported by a shaft 49 at the tip of the rocking body 46 bent into a substantially L shape, and a protruding surface 41a and a rotation angle regulating surface 41b are formed on the outer periphery of the rotating body 41. . The bent portion 47a formed at the tip of the rotation angle regulating member 47 is connected to the protruding surface 41a of the rotating body 41.
and a bent portion 47 following the rotation angle regulating surface 41b.
A is designed to make sliding contact. spring 48
has its base engaged with the shaft 45, one end of which is locked with a pin 50 provided on the upright plate 40, and the other end of which abuts against the bent portion 47a of the rotation angle regulating member 47, thereby controlling the oscillator 46 and the rotation angle. The elastic force is applied to the regulating members 47 so that they swing together toward the holding member 42, and the bent portion 47a formed at the tip of the rotation angle regulating member 47 adjusts the protruding surface 41a of the rotating body 41 and the rotation angle. The bent portion 47a is pressed so as to come into sliding contact with the regulating surface 41b. Then, the rocking body 46 swings, and the protruding surface 41 of the rotating body 41
a is adapted to come into pressure contact with the clamping surface 42a of the clamping member 42. Further, in a state in which the rocking body 46 swings and the protruding surface 41a of the rotary body 41 is in pressure contact with the clamping surface 42a of the clamping member 42, the pressing roller 23 provided on the binding arm 2 The center of the pressing roller 23 is offset from the shaft 49 so that it engages with the rotation angle regulating surface 41a and rotates the rotating body 41 clockwise in the drawing.

The operation of this embodiment configured in this way will be described next. As shown in FIG. 1, the binding arm 2 is tilted while pushing the object A against the tape pulled out between the tip of the binding arm 2 and the tape holding means 4. During this initial bundling operation, the tape 7 is moved to the guide roller 2 as shown in FIG.
0, 21, 18, 22 and press roller 2
3 and is wound around the object A while being pushed by the lower end of the tape release plate 12 and the lower end of the pressure bonding plate 13, and the tape 7 thus wound is wound around the object A.
extends over the pressure receiving plate 43 and the clamping member 42, and its cut end 7a is clamped between the protruding surface 41a of the rotating body 41 and the clamping surface 42a of the clamping plate 42.

At the beginning of this binding operation, the tape release plate 1
2 is supported by the tape 7 at its upper end (guide roller 18) and its lower end, and the tension force of the tape 7 and the spring 1
It is supported floating by the balance with the elastic force of 7. Then, when the binding arm 2 is continued to be tilted, the tape 7 is connected to the pressure contact plate 13 and the pressure receiving plate 43 as shown in FIG.
The adhesive surfaces of the tape 7 are adhered to each other, and the objects to be bound A are bound, and the tape 7
is firmly pressed and held, and the tape release plate 12
is inserted into the gap 44 and presses the tape 7 strongly, compressing the spring 17 and releasing the tape release plate 1.
Accumulates the elastic force that pushes 2 downward. When the binding arm 2 is further tilted, the spring 17 is further compressed and further accumulates the force that pushes the tape release plate 12 downward. While rotating, the tape 7 is held between the tapes 7 and the swinging body 46 is swung to release the holding of the cut end 7a of the tape 7, resulting in the state shown in FIG. In this state, the bent portion 47a of the rotation angle regulating member 47 is in contact with the protruding surface 41a of the rotating body 41. When the binding arm 2 is subsequently tilted, the cutting blade 11 is lowered and the clamping member 42 is lowered as shown in FIG.
The top surface of the press roller 23 and the rotation angle regulating surface 41b
The tape 7 that is tightly stretched between the holding part and the tape 7 is cut. At the moment when the tape 7 is cut, the tape relief plate 12 releases the spring 1 that has been stored up until now.
The pressure receiving plate 43 and the clamping member 42 descend with the elastic force of 7.
The lower end of the tape is inserted between the cut end 7 of the tape and
a is released from the clamping surface 42a of the clamping member 42, and the guide roller 18 is also lowered due to the lowering of the tape release plate 12, thereby loosening the tension of the tape 7. Due to this relaxation of the tape 7, there is no tensile force of the tape 7 at the sandwiched portion between the pressure roller 23 and the rotation angle regulating surface 41b of the rotating body 41, and the cut end 7a of the tape is not dragged.
When the binding arm 2 is raised, the pressing roller 23 also rises, and the bent portion 47a of the rotation angle regulating member 47 follows and comes into sliding contact with the rotation angle regulating surface 41b of the rotating body 41, rotating the rotating body 41, and the oscillating body 46 The elastic force of the spring 48 swings toward the clamping member 42, and the new tape cut end 7a is clamped between the protruding surface 41a and the clamping surface 42a of the clamping member 42.

(Effects of the Invention) As detailed above, according to the present invention, the tape relief plate is provided in the guide frame provided on the binding arm so as to pass through the tape relief plate, and the tape relief plate is pushed down by the elastic force of the spring at the same time as the tape is cut. As a result, the tension of the tape that is being pulled out can be relaxed. Thereby, the cut end of the cut tape will not be dragged, and the cut end can be reliably held with a sufficient pinching margin.

Further, since the tape release plate is inserted between the pressure receiving plate and the clamping member at the same time as the tape is cut, the cut end of the cut tape can be reliably released from the clamping surface of the clamping member. In this way, the cut end of the tape is reliably held and the cut end is reliably released, so that objects to be bound can be more reliably bound.

[Brief explanation of the drawing]

Fig. 1 is a side view of a binding device showing an embodiment of the present invention, Fig. 2 is a partial vertical sectional view showing an enlarged main part of the invention, and Fig. 3 is a state immediately before cutting the tape. FIG. 4 is a partial longitudinal section showing the state immediately after cutting the tape, and FIG. 5 is a front view of the tape holding means. DESCRIPTION OF SYMBOLS 1... Base, 2... Binding arm, 4... Tape holding means, 10... Tape crimping cutting mechanism, 11... Cutting blade, 12... Tape relief plate, 13... Crimping plate, 14... Guide Frame, 17... Spring, 18... Guide roller, 23... Press roller, 41... Rotating body, 42... Holding member, 43... Pressure receiving plate, 46...
... Rocking body, 47 ... Rotation angle regulating member, 48 ...
Spring.

Claims (1)

[Claims] 1. A bundling device in which a tape crimping and cutting mechanism is provided at the tip of a bundling arm that is movably provided on a base, and a tape holding means is provided on the base in correspondence with the tape crimping and cutting mechanism. A guide frame is provided at the tip of the arm, and a tape release plate is provided that penetrates the guide frame and is slidable via a compression spring, and is spaced to the rear side of the tape release plate and is connected to the guide plate via the compression spring. The tape cutting and crimping mechanism is formed by a crimping plate slidably provided on the base, a guide roller provided at the upper end of the tape release plate, and a cutting blade provided on the front side of the tape release plate. A pressure-receiving plate provided on an upright plate provided on a stand opposite the crimp plate of the tape cutting and crimping mechanism, and a gap that allows the tape release plate of the tape cutting and crimping mechanism to come in and out facing the pressure-receiving plate are erected. A clamping member fixed to a plate, a rocking body swingably provided on an upright plate, a rotating body provided on the upper part of the rocking body and having a protruding surface and a rotation angle regulating surface formed on the outer periphery, and the rocking body. a spring for applying an elastic force so that the rotating body swings and the protruding surface of the rotating body comes into pressure contact with the clamping surface of the clamping member, and a tip end elastically engages with the rotation angle regulating surface of the rotating body. A binding device characterized in that the tape holding means is formed by a rotation angle regulating member.