JPH0468208B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a binding device that tightly wraps binding tape around objects to bind the objects, and particularly relates to a binding device that binds objects to be bound by tightly winding a binding tape around the objects. The present invention relates to a binding device with an improved crimping mechanism.

(Prior art) Conventionally, in conjunction with the raising and lowering of a binding arm provided on a base so that it can be raised and lowered, the winding end of the binding tape wound around the object on the base is A binding device that performs crimping and cutting is known.

This type of binding device is known, for example, from Japanese Patent Application No. 56-13102.
As shown in FIG. 9, the base of the binding arm b is pivotally attached to one side of the base a, and the binding arm unwound from the reel c is attached to the other side of the base a. A tape holding means e for holding the cut end of the binding tape d guided through b and a pressure receiving member g for supporting the back surface of the wound end of the binding tape d wound around the object f to be bound are arranged side by side. A pressing member h that cooperates with the pressure receiving member g to press the winding end of the binding tape d and a cutting blade i that cuts the winding end of the binding tape d are provided at the tip of the binding arm b. The structure further includes a tape rewinding mechanism j that applies tension to the binding tape d as the binding arm b tilts. Note that the binding arm b is biased in the upright direction by a spring n interposed in the shaft portion.

In such a binding device, the tape holding means e
When the binding tape d is held at the cut end, the object to be bound d is pushed into the holder as shown by the arrow k, and then the binding arm f is tilted, and the binding tape d is wrapped around the object f. The winding end portion is crimped between the pressure receiving member g and the pressing member h, and then cut by the cutting blade i.

(Problem to be Solved by the Invention) In the conventional binding device described above, the pressing member g is always urged toward the pressure receiving member g by the compression spring m built into the binding arm b, and the pressing force of the compression spring m It was designed to generate a corresponding crimping force. On the other hand, the binding tape d is pulled in the unwinding direction by the tape rewinding means j as described above, so that the wound end of the binding tape d tightly wound around the object f is crimped. At this time, the tension force of the binding tape d generated by unwinding the binding tape d acts to cancel out the pressure bonding force, which tends to cause insufficient adhesion between the wound ends of the binding tape d. In some cases, there was a risk that the bound objects would unravel after the binding tape was cut.

The present invention has been made in view of this point, and its purpose is to provide a binding device that can reliably press the winding ends of binding tape wound around objects to be bound. be.

(Means for Solving the Problem) In order to achieve the above object, the present invention pivots the base of the binding arm on one side of the base, and on the other side of the base,
A tape holding means that holds the end portion of the binding tape guided through the binding arm and a pressure receiving member that supports the back surface of the wound end portion of the binding tape wound around the object to be bound are arranged in parallel, A pressing member that cooperates with the pressure-receiving member to press the winding end of the binding tape and a cutting blade that cuts the winding end of the binding tape are provided at the tip of the arm, and further, the arm is provided with a pressing member that cooperates with the pressure receiving member to press the winding end of the binding tape, and a cutting blade that cuts the winding end of the binding tape. The binding device is provided with a tape rewinding means for applying tension to the binding tape, in which the pressing member is supported by a support frame provided on the binding arm so as to be movable forward and backward, and the pressing member is biased by a biasing means. The pressure receiving member is always biased toward the pressure receiving member, and a receiving portion is formed at the base end of the pressing member in contact with the binding tape guided in the binding arm and receiving the tension of the binding tape. It is characterized by

(Function) In the binding device configured as described above, the tension of the binding tape is applied to the pressing member from both its proximal receiving portion and the pressing portion for the pressure receiving member, so that the tension of the binding tape applied to the pressing member is The forces are canceled out, so that the biasing force of the biasing means is not weakened by the tension of the binding tape, and the end portion of the winding of the binding tape is securely crimped.

(Example) A binding device according to the present invention will be described below with reference to the drawings. The overall structure of this binding device is the same as the 9th one.
Since it is the same as that shown in the figure, only the main parts will be illustrated and explained here.

In Figures 1 to 3, 1 is a base, and this base 1
A binding arm 2 is provided so as to be movable up and down. The binding arm 2 is biased in the upright direction by a spring (not shown), and a crimping/cutting mechanism 4 for the binding tape 6 is provided at the tip (free end) 3 of the binding arm 2.
is provided. A tape holding device 5 is provided on the base 1 to hold the cut end 6a of the binding tape 6 at a position where the free end 3 of the binding arm 2 faces when the binding arm 2 is tilted.
is provided. The binding tape 6 is attached to a tape reel (not shown), and its front portion 6
is guided toward the tape holding device 5 via the binding arm 2. The tape holding device 5 is roughly composed of a pair of upright plates 7, a swing plate 8, a rotating body 9, and a pressure receiving plate 10 as a pressure receiving member.

In FIGS. 1 to 3, only one of the pair of upright plates 7 is shown, and a shaft 11 is spanned between the pair of upright plates 7. The rocking plate 8 is rotatably provided on this shaft 11. A shaft 12 is fixed to the free end of the rocking plate 8, and a cylindrical or polygonal cylinder-shaped rotating body 9 It is rotatably provided on the shaft 12. A torsion coil spring 13 is attached to the shaft 11.
is attached, one end of this torsion coil spring 13 is in contact with the upright plate 7, and the other end is
The swing plate 8 is elastically biased in the direction of arrow A in FIG. The pressure receiving plate 10 is fixed to the upright plate 7, and the pressure receiving plate 10 is made of a rubber material, a plastic material, or the like. On the standing board 7,
The cut end 6a of the binding tape 6 cooperates with the rotating body 9.
A clamping member 15 for clamping is provided. The upper end portion of this clamping member 15 is curved to form a curved portion 15a. A space is provided between the clamping member 15 and the pressure receiving plate 10 in which a tape relief plate 16 moves up and down, and a shaft 17 is locked to the swinging plate 8, and the tape relief plate 16 is attached to this shaft 17. The tape release plate 16 moves up and down as the swing plate 8 swings.

The rotating body 9, which is formed into a cylindrical or polygonal cylinder shape, has a plurality of clamping surfaces 18 formed on its outer periphery, and the clamping surfaces 18 are planar, and here, the contact area is In order to reduce this, an appropriate number of thin grooves (not shown) are cut into the surface of each clamping surface 18 in a direction parallel to the axial direction of the rotating body 9. Clamping surface 1
8 and the clamping surface 18 is an engagement recess 19 that engages with the curved portion 15a. The rotating body 9 is moved in the direction of arrow B in FIG.
It is designed to be rotationally driven in the direction. The swing plate 8 includes a reversal prevention means for preventing the rotating body 9 from rotating in the direction opposite to the direction in which the binding tape is fed out, and a rotation angle regulating means for regulating the rotation angle of the rotating body 9 in the direction in which the binding tape is fed out. and is provided.

As shown in FIGS. 7 and 8, the reverse rotation prevention means is generally composed of a pawl plate 21 and a reverse rotation prevention plate 22. The anti-reverse plate 22 is integrally attached to the rotating body 9 so that it can rotate together with the shaft 1.
2 is rotatably provided. Further, the reverse prevention plate 22 has a locking portion 22a, and this locking portion 22a
The number of engagement recesses 19 formed on the outer circumference of the rotating body 9 is the same as the number of engagement recesses 19 formed on the outer circumference of the rotating body 9. Nail plate 2
1 is swingably provided on the shaft 14, and the shaft 1
4 is attached to the torsion coil spring 23 (FIG. 1), its tip 21a is connected to the engaging portion 22.
It is biased in the direction of contacting a. By this reversal prevention means, the rotating body 9 is rotated by the arrow B in FIG.
Rotation in the opposite direction will be prevented.

As shown in FIG. 8, the rotation angle regulating means is roughly composed of an arcuate claw 24 and an angle regulating plate 25. This angle regulating plate 25 is the reverse rotation prevention plate 2.
2, it is integrally attached to the rotating body 9 and rotatably provided on the shaft 12 so that it can rotate integrally with the rotating body 9, and has the same configuration as the reverse rotation prevention plate 22. Angle regulating plate 25 and reverse rotation prevention plate 22
are attached closely to both axial ends of the rotating body 9, and their engaging portions 25a and 22a face in opposite directions. The arcuate claw 24 is connected to the shaft 1
4, one end 24 of which is swingably provided.
As shown in FIG. 8, a claw 26 is formed on the portion a. As shown in FIG. 1, a torsion coil spring 27 is attached to the shaft 14, one end 27a of which abuts a cut-and-raised portion 28 formed at the other end 24b of the arcuate claw 24, and the other end Part 27
b is in contact with the shaft 11. The arcuate claw 24 is
By the torsion coil spring 27, the claw 2
6 is biased so as to come into contact with the engaging portion 25a of the angle regulating plate 25, and the rotating body 9 is biased against the guide roller 20.
While the binding tape is being fed out in cooperation with the binding tape, the other end 24b of the arcuate claw 24 is in contact with the clamping member 15, as shown in FIG. The claw 26 is prevented from coming into contact with the engaging portion 25a. And when the binding tape is not fed out, that is,
When cutting the binding tape, cut the other end 24b.
is separated from the clamping member 15, the claw 26
By engaging and abutting the engaging portion 25a, the rotating body 9
stops rotating, making it easier to cut the binding tape.

A shaft 28 is fixed to the free end 3 of the binding arm 2. A swing plate 29 and a swing plate 30 are swingably provided on this shaft 28, a pin 31 is fixed to this swing plate 29, and the guide roller 20 is rotatably attached to this pin 31. It is provided. A meandering prevention roller 32 and an auxiliary roller 33 are provided at the free end of the swing plate 30. A torsion coil spring 33 is attached to the shaft 28, and one end thereof is connected to a locking pin 34 protruding from the free end 3.
The other end is brought into contact with a cut-and-raised portion 3a formed on the rocking plate 30, and the other end is brought into contact with the cut and raised portion 3a formed on the rocking plate 30.
Due to this torsion coil spring 33,
In FIG. 1, the swing plate 29 is resiliently biased in the direction of the arrow C, and the swing plate 29 has a fitting hole 35 that fits into the locking pin 34.
The rotating shaft 36 of the auxiliary roller 33 is in contact with the swing plate 29, and the swing plate 29 is indirectly elastically biased in the direction of arrow C by the torsion coil spring 34. has been done.

The crimp cutting mechanism 4 includes a cutting blade 37 and a support frame 38.
, a pressing plate 39 as a pressing member, and a gap closing plate 40. A holder 41 is attached to the free end 3 of the binding arm 2, and the cutting blade 37 is detachably attached to the holder 41. The binding arm 2 is provided with a guide roller 42 and a guide roller 43 along the binding arm 2.
2, guided through a guide roller 43, a meandering prevention roller 32, an auxiliary roller 33, and a guide roller 20.

As shown in FIG. 6, the support frame 38 is a U-shaped frame body, and the pressing plate 39 and the gap closing plate 40 are slidably provided on the support frame 38. The gap closing plate 40 here is composed of an upper plate 44 and a lower plate 45, as shown in FIG. As shown in FIG. 4, the upper plate 44 is provided with a spring mounting part 44a and an engaging protrusion 44b, a compression spring 46 is mounted on the spring mounting part 44a, and the gap closing plate 40 is This compression spring 46
As a result, the engaging protrusion 44b is biased in the direction of engaging the lower part 38a of the support frame 38.

The pressing plate 39 has a binding tape receiving part 47 with a rounded surface and an engaging part 48 formed on the upper part thereof, and a spring mounting part 4 in the middle part thereof.
9 and an engaging portion 50 are formed. Above the spring mounting part 49 is a spring insertion space 51 from which a compression spring 52 can be mounted to the spring mounting part 49. With the compression spring 52 mounted, the pressing plate 39 is mounted and supported on the support frame 38 from the lower part of the support frame 38, and the pressing plate 39 is rotated by the compression spring 52 in the direction in which the engaging portion 48 thereof is seated on the upper part 38b of the support frame 38. is energized by The binding tape 6 is rewound in the tape rewinding direction in association with the tilting movement of the binding arm 2 by a tape rewinding means (not shown), and the guide roller 42
The pressure plate 39 is disposed below the receiving portion 47 of the pressure plate 39, and the pressure plate 39 is urged toward the pressure plate 10 by the tension of the binding tape 6.

Hereinafter, the operation of the binding device configured as described above will be explained.

FIG. 1 shows that after the object to be bound 53 is brought into contact with the front part of the binding tape 6 and the binding tape is pulled out, the binding arm 2 is tilted and the binding tape tightly wound around the object to be bound 53 is removed. This shows a state in which the winding ends 6b and 6c are held between the pressure receiving plate 10 and the pressing plate 39, and a part of the front end of the binding tape 6 is held between the guide roller 20 and the rotating body 9. ing. When the binding arm 2 is further tilted from this stage, the pressing plate 39 rises against the biasing force of the compression spring 52.
A pressing force corresponding to the biasing force of the compression spring 52 acts on the pressure receiving plate 10, and the winding ends 6b, 6c of the binding tape are pressed together by the pressing plate 39 and the pressure receiving plate 10.
At this time, since the binding tape 6 passes through the upper and lower parts of the pressing plate 39, the tension force of the binding tape trying to lift the pressing plate 39 and the tension force of the binding tape trying to push down the pressing plate 39 As a result, the downward urging force of the compression spring 52 acts effectively on the pressing plate 39, and the winding end portion is reliably crimped.

FIG. 2 shows a state immediately before the binding arm 2 is further tilted to cut the binding tape tightly wound around the object 53 to be bound. At this stage, the swing plate 8 is swung in the direction away from the clamping member 15 by the pressing force of the guide roller 20, and the cut end 6a of the binding tape is released by the swing of the swiveling plate 8. . Further, the rotating body 9 is rotated in the direction of arrow B by the guide roller 20 to feed out the binding tape, and when the rotating body 9 is rotated to a desired angle, the claw 26 engages with the engaging portion 25a. The rotation of the rotating body 9 in the binding tape feeding direction is stopped. on the other hand,
The pressing plate 39 rises against the biasing force of the compression spring 52, and the gap crushing plate 40 descends relatively.As a result, the gap near the end of the winding is crushed, and the object to be bound 5
3 is bound with binding tape with almost no gaps.

When the binding arm 2 is further tilted from the above stage, the swinging plate 8 is greatly swung in the direction away from the clamping member 15 while the rotating body 9 is stopped. As the swing plate 8 swings, the tape relief plate 16 rises significantly, as shown in FIG.
Tension is applied from the clamped portion held between the guide roller 19 and the rotating body 9 to the tape tensioned portion between the winding ends 6b and 6c pressed by the pressure plate 39 and the pressure receiving plate 10. When this tension is applied, the binding tape 6 is cut by the cutting blade 37.

In the above embodiment, the proximal end receiving portion 47 of the press plate 39 is rounded, but instead of this, a roller is rotatably attached to the proximal end of the press plate and the binding tape is received on this roller. It is also possible to have a configuration in which

(Effects of the Invention) As explained above in detail, the present invention applies the tension force of the binding tape to both ends of the pressure plate, so the tension force applied to the pressure plate is canceled out, and the tension force applied to the pressure plate is canceled out. The biasing force of the biasing means acts effectively, and the binding ends of the binding tape are securely crimped, resulting in the effect that objects to be bound can be securely bound. In particular, the binding device according to the present invention can be used to tightly wrap large objects whose heads protrude above the pressure receiving plate. It has excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the main parts of the binding device according to the present invention, FIG. 2 is a side view showing the binding tape in a state on the verge of cutting, FIG. 3 is a side view showing the state immediately after cutting the binding tape, and FIG. 4 is a schematic front view of the crimp cutting mechanism according to the present invention, FIG. 5 is a schematic side view of FIG. 4, FIG. 6 is a side view schematically showing the configuration of the crimp cutting mechanism according to the present invention, and FIG. FIG. 8 is a side view showing the main parts of the tape holding device according to the present invention, FIG. 8 is a perspective view of the main parts shown in FIG. 7, and FIG. 9 is a side view showing the overall structure of a conventional binding device. DESCRIPTION OF SYMBOLS 1... Base, 2... Binding arm, 5... Tape holding device (tape holding means), 6... Binding tape, 6
a... Bundled end, 6b, 6c... Winding end, 10
... Pressure receiving plate (pressure receiving member), 37 ... Cutting blade, 38
... Support frame, 39 ... Pressing plate (pressing member), 40
... Gap closing plate, 47 ... Receiving part, 53 ... Object to be bound.

Claims (1)

[Claims] 1. The base of the binding arm is pivoted on one side of the base, and on the other side of the base, a tape holding means for holding the cut end of the binding tape guided through the binding arm and wrapped around the object to be bound are installed. A pressure-receiving member that supports the back side of the winding end of the wound binding tape is arranged in parallel, and a pressing member that cooperates with the pressure-receiving member and press-bonds the winding end of the binding tape to the tip of the binding arm. and a cutting blade for cutting the winding end of the binding tape, and a tape rewinding means for applying tension to the binding tape as the binding arm is tilted, the pressing member is supported movably forward and backward by a support frame provided on the binding arm, and the pressing member is normally urged toward the pressure receiving member by a biasing means, and the base end of the pressing member is attached to the inside of the binding arm. A binding device comprising a receiving portion that contacts the guided binding tape and receives the tension of the binding tape.