JPH0468206B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a binding device for binding objects by tightly winding a binding tape around the objects.

(Prior art) Conventionally, binding tape is wound around objects to be bound by tilting a binding arm, and the ends of the binding tape wound around objects to be bound are crimped and cut to be bound. BACKGROUND ART A binding device for binding objects is known.

This type of binding device is known, for example, from Japanese Patent Application No. 56-13102.
As shown in FIG. 6, the base of the binding arm b is pivoted 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 device e that holds the cut end of the binding tape d guided through b and a pressure receiving member g that supports the back side 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. Furthermore, a tape rewinding mechanism j is provided for applying tension to the binding tape d as the binding arm b is tilted. 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 device e
After pushing the object f into the binding tape d whose cut end is held in the direction of the cradle as shown by the arrow k, when the binding arm d is tilted, the binding tape d is wrapped around the object f. The wound end portion is pressed by the pressure receiving member g and the pressing member h, and is cut by the cutting blade i, and the cut end portion is held as it is by the tape holding device e.

(Problem to be Solved by the Invention) By the way, in such a binding device, after the binding of the objects f to be bound is completed, the newly formed tape reel c
It is required that the cut end of the side binding tape d be held securely by the tape holding means e. However, according to the above-mentioned conventional binding device, even after the winding end of the binding tape d is crimped and cut, tension is applied to the binding tape d by the tape rewinding mechanism. The cut end of the binding tape tries to escape in the direction away from the tape holding device e, and it becomes difficult to secure enough grip for the cut end of the binding tape d for the next binding. It has a drawback that it is difficult to securely hold the cut end after crimping and cutting.

The present invention has been made in view of the drawbacks of the prior art described above, and an object of the present invention is to securely secure the cut end of the binding tape on the tape reel side after crimping and cutting the wound end of the binding tape. The object of the present invention is to provide a binding device that can be held.

(Means for Solving the Problems) The present invention is characterized by a tape holding device that holds a cut end of a binding tape guided from a tape reel via a binding arm, and a a tape rewinding mechanism that rotates a tape reel in a direction in which the binding tape is unwinded, and by tilting and moving the binding arm, the binding tape is wound around the object to be bound, and the binding tape is also wound around the object to be bound. In the binding device, the binding device is configured to bind the objects by crimping and cutting the wound ends of the binding tape, in which a swinging device is provided in the middle of the binding arm so as to be able to engage with the binding tape fed out from the tape reel. A movable plate is provided around the movable plate, and a stopper means for locking the movable plate in an engagement position that applies tension to the binding tape, and a stopper means for locking the movable plate in an engagement position that applies tension to the binding tape, and a stopper means that holds the binding arm at a crimping position of the winding end of the binding tape. A stopper release means is provided for releasing the locking of the stopper means when the stopper means is tilted beyond the limit.

(Function) Since the rocking plate is held at the locking position until the winding end of the binding tape is crimped, the rocking plate and tape rewinding mechanism cooperate to apply tension to the binding tape. This gives tension. On the other hand, when the binding arm tilts beyond the crimping position of the binding tape, the stopper release means releases the locking of the rocking plate by the stopper means, so the binding tape becomes slack and the cut end is Since it is no longer pulled back, the desired gripping distance can be secured.

(Example) Examples of the present invention will be described below based on the drawings. The overall structure of this binding device is the same as that shown in FIG. 6, so only the main parts will be illustrated and explained here.

In FIGS. 1 and 2, 1 is a base, and on this base 1, a frame 2 and a tape holding device 3 are attached.
They are provided at intervals in the longitudinal direction of the base 1. Frame 2 includes frame plate 2A and frame plate 2
A rotating shaft 4 is inserted through the frame plate 2A and the frame plate 2B. A binding arm 5 is fixed to this rotating shaft 4. tied arm 5
The binding arm 5 rotates together with the rotation shaft 4, and a guide pin 6 is provided protruding from the rotation base of the binding arm 5. An arcuate hole 7 is provided in the frame plate 2B, and the guide pin 6 is inserted through this arcuate hole 7. A suspension pin 8 is stretched between the frame plates 2A and 2B, and a tension coil spring 9 is stretched between the suspension pin 8 and the guide pin 6, so that the binding arm 5 is spring-biased in the upright direction. There is. The frame plate 2B is provided with a bearing 10, and this bearing 10 is provided with a rotating shaft 11, and this rotating shaft 11 has a one-way clutch 12 and a tape reel 13.
and is provided. A binding tape 14 is attached to this tape reel 13, and the binding tape 1
The front part of 4 is connected to the tape holding device 3 via the binding arm 5.
The cut end 14a is held by the tape holding device 3 as shown in FIG.

A sector gear 15 is fixed to the rotating shaft 4,
A small gear 16 is fixed to the rotating shaft 11, and each gear 1 is connected between the sector gear 15 and the small gear 16.
An intermediate gear 17 is provided which meshes with the gears 5 and 16. The sector gear 15, the intermediate gear 17, and the small gear 16 constitute a binding tape rewinding mechanism, and are driven in conjunction with the raising and lowering movements of the binding arm 5. The tape reel 14 is here rotated counterclockwise as the binding arm 5 tilts, and when the binding arm 5 is raised, its rotation is interrupted by the presence of the one-way clutch 12. It's starting to sag.

The free end portion 18 of the binding arm 5 is provided with a tape crimping/cutting mechanism. This tape crimping/cutting mechanism is generally composed of a cutting blade 19, a tape crimping plate 20, and a gap crushing rod 21. tied arm 5
A guide frame 22 is provided at the free end 18 of the tape crimping plate 20 and the gap closing rod 21 are guided and supported by this guide frame 22 so as to be movable in the vertical direction. The free end 18 of the binding arm 5 has a shaft 2
3 is fixed, and a swing plate 24 is fixed to this shaft 23.
and a rocking plate 25 are swingably provided. The swing plate 24 is provided with guide rollers 26, 27, and 28 for guiding the binding tape 14. Axis 23
A torsion coil spring 29 is attached to the swing plate 2.
5 is resiliently biased in the direction of arrow C in FIG. 2 by this torsion coil spring 29. Rocking plate 2
A shaft 30 is provided protruding from the shaft 5, and an auxiliary roller 31 is provided on the shaft 30.

The tape holding device 3 has a pair of upright plates 32, a shaft 33 is spanned between the upright plates 32, and a swing plate 34 is rotatably provided on the shaft 33. This swing plate 34 is provided with a shaft 35, and a rotating body 36 is rotatably provided on this shaft 35. A spring 37 is attached to the shaft 33, and the rocking plate 34 is urged to rotate in the direction of arrow D in FIG. The upright plate 32 includes a pressure receiving plate 38 that cooperates with the tape crimping plate 20 to press both winding ends 14b of the binding tape 14 wound around the object A, and a cut end 14a of the binding tape 14. A clamping member 39 for clamping is provided, and the upper end thereof is curved to form a curved portion 39a. Rotating body 36
is separated from the clamping member 39 by the pressing action of the guide roller 28, and the cut end 14a of the binding tape 14 is released by the separating action of the rotating body 36. While the cut end 14a is released, a portion of the binding tape 14 is held between the rotating body 36 and the guide roller 28.

Returning to FIG. 1, a swing plate 40 is loosely fitted to the shaft 4. The swing plate 40 is provided with an engagement pin 41 on the side closer to the rotation base, and an engagement shaft 42 on the side farther from the rotation base. This engagement shaft 4
2 is in contact with one side of the binding arm 5 when the binding arm 5 is upright, and the guide roller 4 is attached to the engagement shaft 42.
3 is provided. This guide roller 43 is in contact with a part of the binding tape 14 extending from the tape reel 13 toward the binding arm 5. Swing plate 40
has the function of applying tension to the binding tape in cooperation with the tape rewinding mechanism when the binding arm 5 is tilted, and also relieves the tension of the binding tape 14 after the winding end 14b of the binding tape 14 is crimped. It has the function of A shaft 44 is fixed to the frame plate 2A, and a stopper plate 45 as a stopper means is rotatably attached to the shaft 44. A suspension pin 46 and an engaging portion 4 are attached to the stopper plate 45.
7 is provided.

An engagement plate 48 as a stopper release means is fixed to the shaft 4 as the rotation axis of the binding arm 5.
A suspension pin 49 is provided on the engagement plate 48, and a spring 48a is stretched between the suspension pin 49 and the suspension pin 46.
is biased in a direction in which its engaging portion 47 engages with the engaging pin 41. The engagement plate 48 has an engagement surface 48a at its free end that engages with the suspension pin 46, and the winding end 14b of the binding tape 14 wound around the object A shown in FIG. Immediately after crimping, the engaging surface 48a is engaged with the suspension pin 46, and the stopper plate 45 is rotated clockwise in FIG. 1 about the shaft 44 as a fulcrum. The engagement between the engagement portion 47 and the engagement pin 41 is released.

Next, the action will be explained.

First, the binding tape 14 is brought into contact with the object A to be bound, and the binding tape 14 is pulled out. Next, when the binding arm 5 is tilted, the tape reel 13 is rotated in the direction in which the binding tape 14 is rewound by the action of the tape rewinding mechanism. As the binding arm 5 is tilted, the engagement plate 48 rotates counterclockwise in FIG. 1. Here, while the engagement surface 48a of the engagement plate 48 is not in contact with the suspension pin 46, the stopper plate 45 is urged counterclockwise in FIG. 1 by the urging force of the spring 48, and the engagement portion 47 is engaged with the engagement pin 41, the swing plate 40 is prevented from rotating counterclockwise, and the guide roller 43 of the swing plate 40 cooperates with the tape rewinding mechanism to unwind the binding tape. This will add tension to 14.

Immediately after the winding end of the binding tape 14 wound around the object A is crimped as shown in FIG.
Since the engagement surface 48a of the engagement plate 48 comes into contact with the suspension pin 46, the stopper plate 45 rotates clockwise in FIG. Then, the engagement between the engagement portion 47 and the engagement pin 41 is released, the rocking plate 40 is in a state where it can rotate counterclockwise, and the guide roller 43 is moved by the tension of the binding tape 14 itself. When pressed, the rocking plate 40 rotates counterclockwise, and the tension of the binding tape 14 is relaxed immediately after the winding end of the binding tape 14 wound around the object A is crimped. Ru. That is, the guide roller 43 functions as a fastening tape relaxing means after the winding end portion 14b of the binding tape 14 is crimped. Therefore, after that, the cut end of the newly formed binding tape 14 on the tape reel side by cutting with the cutting blade 19 is prevented from separating from the tape holding device 3, and the newly formed binding tape 14 is prevented from separating from the tape holding device 3. 14 can be secured, and the cut end 14a of the binding tape 14 can be reliably held by the tape holding device 3 when the binding arm 5 is raised.

3 and 4 show a second embodiment of the binding device according to the present invention, and the same elements as those in the previous embodiment are designated by the same reference numerals. Therefore, detailed explanation thereof will be omitted.

The binding arm 5 includes guide rollers 50, 51 and a shaft 5.
3 and 54, and an engagement pin 55 are provided, and the frame 2 is provided with an engagement pin 56. axis 53
A rocking plate 57 is rotatably provided on the rocking plate 5.
A nipping roller 58 that also serves as a guide roller is provided at one end of the roller 7, and this nipping roller 58 can collide with the guide roller 51. An engagement pin 59 is provided protruding from the other end of the swing plate 57 . A stopper plate 60 as a stopper means is attached to the shaft 54.
is rotatably provided as shown in FIG. 5, and a spring 61 is attached thereto. is provided with an engaging portion 62, and when the binding arm 5 is raised,
This engaging portion 62 engages with the engaging pin 59.
The engagement pin 56 is configured to come into contact with one side of the swing plate 57 when the binding arm 5 is upright, and the stopper plate 60 is connected to an engagement pin 63 provided on the frame 2 as a stopper release means. It has an engaging surface 60a that engages. The engagement pin 63 has an eccentric configuration, and by adjusting the engagement pin 63, the position where the stopper plate 60 engages with the engagement pin 63 when the binding arm 5 is tilted can be determined. The swing plate 57 is stopped from rotating when the engagement pin 59 and the engagement portion 62 are in the engaged state.

Next, the operation of this second embodiment will be explained.

In FIG. 3, when the binding arm 5 is tilted,
By the action of the tape rewinding mechanism, the tape reel 13 rotates in the direction in which the tape is rewound.
During the tilting movement of the binding arm 5, and before the winding end 14b of the binding tape 14 is crimped and cut, the engagement pin 59
Since the and the engaging portion 62 are in the engaged state, the rocking plate 5
7 remains prevented from rotating clockwise in FIG. 3, and the nipping roller 58 cooperates with the tape rewinding mechanism to apply tension to the binding tape 14. After the winding end portion 14b of the binding tape 14 is crimped, the engagement surface 60a of the stopper plate 60 touches the engagement pin 6.
3, the stopper plate 60 rotates clockwise as shown in FIG. 4 against the biasing force of the spring 61, and the engagement between the engagement pin 59 and the engagement portion 62 is released. Then, the swing plate 57 moves the binding tape 1
The tension force of 4 rotates the binding tape 14 in the direction of loosening, and the holding roller 58 is displaced in the direction of contacting the guide roller 51, so that the binding tape 14 is loosened after being crimped and cut. together with binding tape 1
4, the clamping roller 58 comes into contact with the guide roller 51, and a part of the binding tape 14 is clamped. After this, the binding tape 14
When the winding end 14b of the binding tape 14 is cut and the binding arm 5 is raised, even if the cut end 14a of the binding tape 14 is stuck to the circumferential surface of the rotating body 36 due to its adhesiveness. Since a part of the binding tape 14 is held between the holding roller 58 and the guide roller 51, the cut end 14a of the binding tape 14 stuck to the circumferential surface of the rotating body 36 is attached to the rotating body 3.
He was easily separated from 6.

At the final stage of raising the binding arm 5, one side of the swing plate 57 comes into contact with the engagement pin 56, the swing plate 57 rotates counterclockwise, and the clamping roller 58 separates from the guide roller 51. At the same time, the engaging portion 62 of the stopper plate 60 engages with the engaging pin 59, and the binding of the objects A to be bound is completed.

In the above embodiments, the binding tape 14 is loosened immediately after the winding end 14b of the binding tape 14 is crimped, but preferably, the binding tape 14
It is desirable that the binding tape 14 is loosened immediately after the winding end portion 14b is crimped and before cutting.
With this configuration, the cut end 14a of the binding tape 14 is prevented from separating from the tape holding device 3 immediately after the wound end 14b of the binding tape 14 is cut.

(Effects of the Invention) As explained above, the present invention applies tension to the binding tape when tilting the binding arm, and after crimping the binding tape wound around the object to be bound, the tension of the binding tape is applied. Since a rocking plate is provided which is displaced in the direction in which the binding tape loosens due to force, it is possible to apply more tension to the binding tape than before, and even when applying more tension than before. Since the binding tape is loosened after the wound end portion of the binding tape wound around the object to be bound is crimped, the cut end portion of the binding tape can be securely held.

[Brief explanation of the drawing]

FIG. 1 is a side view of the main parts of the binding device according to the present invention in an upright state, FIG. 2 is a side view of the main parts showing the crimped state of the binding device according to the present invention, and FIGS. 3 to 5 are , which shows a second embodiment of the binding device according to the present invention, FIG. 3 is a cross-sectional configuration diagram of the main parts showing the upright state of the binding device, and FIG. 4 is a main part diagram showing the binding device in the tilted state. FIG. 5 is a front view showing the main structure of the binding device, and FIG. 6 is a side view showing the overall structure of the conventional binding device. 3... Tape holding device, 5... Binding arm, 13...
...Tape reel, 14...Binding tape, 14a...
...cut end, 14b...winding end, 15, 16,
17...Gear (tape rewinding mechanism), 19...
Cutting blade, 20... Tape pressure bonding plate, 36... Rotating body, 38... Pressure receiving plate, 40, 57... Rocking plate, 4
5, 60...stopper plate (stopper means), 48
...Engagement plate (stopper release means), 63...Engagement pin (stopper release means).

Claims (1)

[Claims] 1. A tape holding device that holds the cut end of the binding tape guided through the binding arm from the tape reel, and rotates the tape reel in the direction in which the binding tape is rewound in conjunction with the tilting movement of the binding arm. and a tape rewinding mechanism, by tilting and moving the binding arm, the binding tape is wound around the object to be bound, and at the same time, the wound end of the binding tape wound around the object to be bound is crimped and cut. In the binding device, a swing plate is provided in the middle of the binding arm so as to be able to engage with the binding tape fed out from the tape reel, and around the swing plate, A stopper means for locking the rocking plate at an engagement position that applies tension to the binding tape, and a stopper means for locking when the binding arm is tilted beyond the crimping position of the winding end of the binding tape. A binding device comprising a stopper release means for releasing the stopper.