JPS596765B2 - Binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for winding and binding a tape pulled out from a tape reel around objects to be bound by raising and lowering a binding arm. When in the bundle insertion standby position, the tape reel can rotate freely.
When the binding arm starts the tilting operation, that is, the binding operation, it is possible to give the tape reel a tape winding rotation, thereby preventing the tape holding end from coming off when inserting objects to be bound, and reducing the binding tightening force. It is an object of the present invention to provide a bundling device with improved performance.

The invention will be explained in detail below with reference to the illustrated embodiments.

In FIGS. 1 and 2, reference numeral 1 denotes a base, a support 2 is fixed on one end of the base 1, a first pulley shaft 3 is rotatably held on the support 2, and the first pulley shaft 3 is rotatably held on the support 2. A tape reel 4 is rotatably supported on the shaft 3, and a binding tape T is attached to the tape reel 4.

As the binding tape T, adhesive tape, non-adhesive tape, etc. can be used. Between the first pulley shaft 3 and tape reel 4, both 3,
A friction clutch means 5 is provided for frictionally coupling 4. This clutch means 5 is capable of adjusting the frictional coupling force between the two parts 3 and 4. A support body 6 is fixed on the intermediate portion of the base 1, a support shaft T is rotatably supported on the support body 6, and a base end portion of a binding arm 8 is fixed to the support shaft 1.

Binding-related parts such as a tape cutting blade and a tape pressing body (not shown) are attached to the tip of the binding arm 8, and a tape end holder (not shown) is mounted on the other end of the base 1 corresponding to the tip of the binding arm 8. Binding-related parts such as a tape crimping table and a tape crimping stand are attached. Further, a holder (not shown) for holding objects to be bound is provided between the support 6 on the base 1 and the tape pressure bonding table. In the configuration described above, the end of the binding tape T mounted on the tape reel 4 is guided along the binding arm 8 to the tip of the binding arm 8, and is further pulled out from the tip of the binding arm 8 to the drawn-out end. is held (pinched) by a tape holding section on the base 1. When using this device to bind objects to be bound, the binding arm 8 is placed in an upright position, and the tape T is pushed between the tip of the binding arm 8 and the tape holding portion of the base 1. The bound object is placed on the holder on the base 1, and then the binding arm 8 is brought down to the base 1 side to wind the tape T around the bound object, and the end of the winding is attached to the tape crimping body. and a tape pressing body, and the vicinity thereof is cut with a tape cutting blade. Then, when pulling up the binding arm 8, the new end of the tape T is held by the tape holder, and after pulling up the binding arm 8, the bound object is taken out, and one cycle is completed. As described above, binding can be performed in conjunction with the raising and lowering of the binding arm 8. A second pulley shaft 9 is rotatably held on the support 6, and a sector gear 10 and a gear 11 are fixed to the support shaft 7 and the second pulley shaft 9, respectively.
11 is a second pulley shaft 9 when the binding arm 8 is raised and lowered.
36' are connected via the intermediate gear 12 so as to rotate by a smaller angle. The means for connecting the shafts 7 and 9 may be any means other than the gear means described above. A first pulley 13 as a first rotating wheel and a second pulley 14 as a second rotating wheel are fixed to the first pulley shaft 3 and the second pulley shaft 9, respectively.
A belt 15 as an endless member is stretched around the belt 4 in a relaxed state. This belt 15 connects the first pulley 1J13 connected to the tape reel and the second pulley 14 connected to the binding arm 8, and the friction rotation transmission that rotates the pair of rotary wheels 13 and 14 in the same direction by frictional coupling. It functions as a means. Here, as the belt 15, a flat belt, a round belt, a belt, etc. can be used. A cam (rotating cam) 16 having a cam surface 17 on the outer periphery is attached to the boss portion 14A of the second pulley 14.
4 and coaxial with each other, and both 16 and 14 are fixed with bolts 18.

Note that the cam 16 may be formed integrally with the second pulley 14. Alternatively, the cam 16 may be supported separately from the second pulley 14, and both 14 and 16 may be interlocked by a rotation transmission means. The cam surface 17 of the cam 16 has a small diameter circular arc portion 17A, a large diameter circular arc portion 17B, and both portions 17.
Connecting portions 17C, 17 connecting both ends of A, 17B
It consists of C.

A support arm 19 is fixed to the support body 2, and one end of a belt pressing member 20 is rotatably attached to the distal end of the support arm 19 via a pin 21.

A cam roller 22 is rotatably attached to the other end of the belt pressing member 20, and a belt pressing roller 23 is rotatably attached to the intermediate portion of the belt pressing member 20. Here, the parts 20, 22, 23 and the cam 16 are connected to the binding arm 8.
When the binding arm 8 is in the upright position, the rotational force of the tape reel becomes a factor, and when the binding arm 8 is tilted, rotation in the tape reel winding direction is caused from the second pulley 14 to the first pulley 13 as the binding arm 8 is tilted. It functions as an engagement/separation means that engages and separates from the bell opening 5 so that the transmission is transmitted. The above arrangement operates as follows.

That is, as shown in FIG.
At this time, the belt pressing roller 23
is located outside the bell opening 5 in a position that does not apply any tightening force to the belt 15. Therefore, in this state, the belt 15 is slack, and the first pulley shaft 3 and the second pulley shaft 9 are separated. In this state, as described above, the tape T is pressed between the tip of the binding arm 8 and the tape holding portion of the base 1 to insert the object to be bound. When pressed, a tensile force is generated on the tape T. In the apparatus of the present invention, since the tape reel 4 is in a state where it can freely rotate together with the first pulley shaft, the tape reel 4 rotates due to the above-mentioned tensile force, and the tape T is fed out in accordance with the tensile force. Therefore, there is no problem in which the tape T comes off from the tape holding part due to the tensile force of the tape T. When the binding arm 8 is folded down after the objects to be bound are placed on the holder, it is necessary to wind the excess tape T onto the tape reel 4.

According to the present invention, when the binding arm 8 begins to fall down, the cam 16 together with the second pulley shaft 9 begins to rotate clockwise in FIG. is pushed up counterclockwise around the center. At this time, the belt pressing roller 23 is also displaced upward, pressing the belt 15 as shown in FIG. 3, and producing a tightening force on the belt 15. Therefore, the rotation of the second pulley shaft 9 is transmitted to the first pulley shaft 3 through the belt 15, and the tape reel 4 rotates clockwise in FIG. 3 to rewind the tape T. Here, by adjusting the frictional coupling force of the friction clutch means 5, the tightening force of the tape T can be adjusted. That is, if the frictional bonding force of the clutch means 5 is weakened, the tightening force of the tape T will be weakened, and if the frictional bonding force is increased, the tightening force of the tape T will be strengthened, and the objects to be bound will be tightly bound. The circumferential length of the large-diameter arcuate portion 17B of the cam 16 may be set to such a length that the cam roller 22 does not come off from the portion 17B when the binding arm 8 is laid down on the base 1.

In the case of this example device, since the belt pressing roller 23 presses the belt 15 from the outside, the belt 1J13,
This has the advantage that the belt 14 has a large amount of winding, making it difficult for the belt 15 to slip.

However, in addition to the above, as shown in FIG.
A cam roller 22 and a belt pressing roller 23 may be rotatably attached to both ends of the belt pressing member 20, and the belt pressing roller 23 may be positioned inside the belt 15. In this case, when the cam roller 23 is on the large-diameter arc-shaped portion 17B of the cam 16, the belt pressing roller 23 presses the belt 15 from inside to tension the belt 15. 5 and 6 show another modification of the belt pressing member 20, and in the figures, the same reference numerals as in FIGS. 1 and 2 indicate the same components as in the above embodiment. .

In this example, the intermediate portion of the belt pressing member 20 is rotatably attached to the support arm 19 via a pin 21, and the belt pressing member 20 is rotatably attached to the support arm 19 via a pin 21.
A portion 20A connecting the pin pivot portion of 0 and the belt pressing roller 23 is formed of a spring material, and the belt pressing roller 2
3 is characterized in that the belt 15 is positioned so as to press the belt 15 on the circumferential surface of the first plate 3. In the case of this example, the belt pressing force can be made constant by the spring material 20A, and the shock transmitted to the tape reel 4 at the start of tape winding is alleviated by the spring material 20A, resulting in a smooth binding operation. Although each embodiment has been described above, the second pulley and cam of the present invention may be provided on the pivot portion (support shaft 7) of the binding arm, and in this case, the sector gear 10, intermediate gear 12, gear 11, etc. are omitted. The structure can be simplified.

Since the present invention has the above configuration, it is possible to prevent the tape holding end from coming off when inserting objects to be bound and to improve the tightening force of the binding tape.

A first rotary wheel linked to the tape reel and a second rotary wheel linked to the binding arm are connected via a frictional engagement transmission means that rotates the pair of rotating wheels in the same direction by frictional engagement. In addition, a cam is rotatably provided in conjunction with the binding arm, so that when the binding arm is in the upright position, the tape reel can freely rotate, and when the binding arm is tilted, the tape reel can rotate freely in conjunction with the tilting movement of the binding arm. an engaging/separating means that engages and separates from the frictional engagement transmission means in conjunction with the cam so that rotation in the tape reel winding direction is transmitted from the second rotating wheel to the first rotating wheel; Since it is provided so that it can be engaged with the transmission means, it is possible to accurately switch between the tape rewinding rotation operation of the table reel and the free state in relation to the movement of the binding arm. When the binding tape is applied to the tape and pulled out, the rotation transmission from the second rotary wheel to the first rotary wheel is cut off, so the binding tape can be pulled out with a light operation, and the shape of the cam can be adjusted appropriately. If selected, the force exerted by the engagement/separation means on the frictional engagement transmission means can be made constant, and as a result, the tension of the tape during winding and binding can be kept constant. It becomes possible to improve the reliability of the binding device.

[Brief explanation of the drawing]

FIG. 1 is a front view of the main parts of a binding device showing one embodiment of the present invention. FIG. 2 is a developed cross-sectional view taken along the line A-A in FIG. 1. FIG. 3 is a front view of essential parts showing the operation of the binding device shown in FIG. 1. Fourth
The figure is a front view of essential parts of a binding device showing another embodiment of the present invention. FIG. 5 is a front view of the main parts of a binding device showing another embodiment of the present invention. FIG. 6 is a developed sectional view taken along the line B-B in FIG. 5.
1...Base, 4...Tape reel, 8
...Bound arms, 13...1st P11C
14... Second pulley 18 15... Belt, 16... Cam, 20... Belt pressing member (engaging and separating means), 22... ...Camrolla (
engagement/separation means), 23... belt pressing roller (
engagement/separation means), T...Binding tape.

Claims (1)

[Claims] 1 A binding arm that winds the tape pulled out from the tape reel around the object to be bound by a tilting operation and binds the wound ends thereof is pivotably mounted on a base having a freely rotatable tape reel. and a first rotary wheel connected to the tape reel and a second rotary wheel connected to the binding arm, through a frictional engagement transmission means that rotates the pair of rotary wheels in the same direction by frictional engagement. and a cam is rotatably provided in conjunction with the binding arm, so that when the binding arm is in an upright position, the tape reel can rotate freely, and when the binding arm is tilted, the tape reel can be rotated freely, and when the binding arm is tilted, the cam is rotatably provided in conjunction with the binding arm. an engaging/separating means that engages and separates from the frictional engagement transmission means in conjunction with the cam so that rotation in the tape reel winding direction is transmitted from the second rotary wheel to the first rotary wheel; . A binding device, characterized in that it is provided so as to be engageable with the frictional rotation transmission means.