JPH0116729B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a device for winding and binding a tape pulled out from a tape reel around objects to be bound in conjunction with the raising and lowering of a binding arm. When winding the tape around the object by tilting the arm,
The tape reel is rotated to rewind the tape to prevent the wound tape from slacking, and when the tying arm is raised, the transmission of rotation between the tying arm and the tape reel is cut off to prevent unnecessary tape from being drawn from the tape reel. This invention relates to an improvement in a binding device that can prevent delivery.

(Prior art) A conventional device of this kind is, for example, disclosed in Japanese Unexamined Patent Application Publication No. 1986-
As disclosed in Japanese Patent No. 143210, a rotation transmission means including a belt and a pulley is provided between the support shaft of the tape reel and the pivot of the binding arm, and when the binding arm is tilted, the rotation transmission means rotates the tape reel. Back tension was applied to the tape by rotating it in the unwinding direction.

(Problem to be Solved by the Invention) However, in the above conventional example, since the rotation transmission means is composed of a belt, a pulley, and a gear,
In addition to having a large number of parts and a complicated structure, it is inevitable that slippage will occur between the belt and the pulleys, and as a result, the desired unwinding force cannot be obtained.

The present invention was made in order to solve the above-mentioned drawbacks, and an object of the present invention is to provide a binding device that has a small number of parts and can obtain a desired unwinding force.

(Means for Solving the Problems) The configuration specific to the present invention for achieving the above object is as follows.

a fixed gear that rotates in conjunction with the raising and lowering movements of the binding arm; a movable gear that is rotatably and slidably attached to the support shaft of the tape reel and meshes with the fixed gear; and a movable gear that projects from the movable gear and that an engaging member that can freely engage with a groove formed in a support shaft; a spring member that elastically biases the movable gear in a direction in which the engaging member engages with the groove; and one end of the spring member is movable. The engaging member is engaged with a gear, and the other end is able to come into contact with a cam provided on the fixed gear, and when the other end is in contact with the cam when the binding arm is tilted, the engaging member is moved out of the groove. a lever that presses the movable gear against the elastic biasing force of the spring member so as to detach; and a lever provided between the movable gear and the support shaft;
A binding device comprising rotation transmission/intermittent means for cutting off transmission of rotational force from the movable gear to the support shaft when the binding arm is raised.

(Function) When the binding arm is tilted during binding, the fixed gear 19 rotates and the other end 25B of the lever 25 comes off the cam 26.
The elastic biasing force of the spring member 22 exceeds the pressing force of the lever 25 against the movable gear 18, and as a result, the movable gear 18 is displaced by the elastic biasing force of the spring member 22, and the engaging member 21 is moved against the support shaft. 3 groove 2
Engages 0A. That is, it becomes possible to transmit rotational force from the movable gear 18 to the support shaft 3. Since this movable gear 18 is now meshing with the fixed gear 19,
The movable gear 18 rotates as the fixed gear 19 rotates, and the support shaft 3 rotates together with it, so
The tape reel rotates in the rewinding direction.

After tying, when the tying arm is rotated in the upright direction, the fixed gear 19 rotates in the opposite direction to the above, and the movable gear 18 also rotates, but since the rotation transmission/intermittent means 17 is provided, , movable gear 18
The rotational force is not transmitted to the support shaft 3, and therefore the tape reel is not rotated in the drawing direction.

(Effects of the Invention) As described above, the rewinding of the tape reel when the binding arm is tilted is performed by the engagement member protruding from the movable gear engaging with the concave groove of the support shaft. There is no slippage between the movable gear and the support shaft, so the rotational force of the movable gear is reliably transmitted to the support shaft, and the desired unwinding force can be obtained.

In addition, the tape reel and binding arm are connected only by gears, and belts, pulleys, etc. are not used, so the number of parts is small, the configuration is simple, and there are no problems with wear, resulting in long service life. It is also excellent in terms of years.

(Example) The present invention will be described in detail below with reference to the illustrated example.

In Figures 1 to 4, 1 is a base, a support 2 is fixed on the base 1, and a tape reel support shaft 3 is rotatable at the rear (right side in Figure 1) of the support 2. A tape reel 4 is freely held on the support shaft 3.
is installed. A binding tape T is attached to the tape reel 4. As the binding tape T, adhesive tape, non-adhesive tape, self-adhesive tape, etc. can be used. Here, a friction clutch means 5 is provided between the support shaft 3 and the tape reel 4 to frictionally connect the two 3 and 4, and this friction clutch means can cause an appropriate amount of slippage between the two 3 and 4. It is becoming possible to do this. This frictional force can be adjusted by turning the nut 5A.

A support shaft 6 is rotatably supported on the front portion of the support body 2, and a base end portion of a binding arm 7 is fixed to the support shaft 6. Binding-related parts such as a tape cutting blade 8 and a tape pressing body 9 are attached to the tip of the binding arm 7, and a tape holder 10 is mounted on the other end of the base 1 corresponding to the tip of the binding arm 7. Binding-related parts such as a tape crimping table 11 are attached. Further, a table 12 for holding objects to be bound is provided between the support 2 on the base 1 and the tape pressure bonding table 11.

In the configuration described above, the end of the binding tape T mounted on the tape reel 4 is guided along the binding arm 7 to the tip of the binding arm 7, and is further pulled out from the tip of the binding arm 7 to the drawn-out end. is held (pinched) by a tape holding section 10 on the base 1. When binding objects with this device, the binding arm 7 is placed in an upright position, and the tape T is pushed from between the tip of the binding arm 7 and the tape holder 10 of the base 1. The objects to be bound are placed on the table 12 on the base 1. Thereafter, when the binding arm 7 is tilted toward the base 1 side, the tape T is wound around the object to be bound, and the wound end is crimped by the tape crimping table 11 and the tape presser 9, and the vicinity of the crimping part is crimped. The tape is cut by a tape cutting blade 8. Then, when the binding arm 7 is pulled up, the new end of the tape T is held by the tape holding section 10. After pulling up the binding arm 7, the bound objects are 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 7.

An intermediate shaft 13 is fixed to the support body 2 between the tape reel support shaft 3 and the support shaft 6, and the intermediate shaft 13 has a gear 15 that meshes with a sector gear 14 fixed to the support shaft 6. Rotatably mounted. A sleeve 16 is attached to the tape reel support shaft 3 via a one-way clutch 17 as a rotation transmission/intermittent means, and a gear 1 is attached to the sleeve 16.
8 is rotatably and axially movably mounted. The gear 15 is integrally provided with a fixed gear 19 that meshes with the movable gear 18. Here, gear 18
The tooth width is set so that the meshing state with the gear 19 is maintained even when the sleeve 16 moves in the axial direction. In addition, when the binding arm 7 is raised and lowered, the gear 15,
The tooth ratio of gears 14 and 15 is set so that gear 19 rotates by an angle of 360 degrees or less.

The sleeve 16 is integrally provided with a flange portion 20 that faces one end surface of the gear 18, and a plurality of grooves 20A are formed in the flange portion 20 in the circumferential direction. Pins 21, 21 (engaging members) that can be engaged with this groove 20A are implanted in the gear 18, and the gear 18 is attached to the flange portion 20 by a spring 22.
The side is always energized. A hub portion 23 having an annular groove 23A is integrally formed on the other end surface side of the gear 18, and a first end 25A of a lever 25 supported by the support body 2 via a shaft 24 is engaged with the annular groove 23A. are doing. The second end 25B of the lever 25 is connected to the gear 1
When the second end 25B of the lever 25 is in contact with the first surface 26A of the cam 26, the pin 21
is kept at a position away from the concave groove 20A, and the lever 2
When the second end 25B of the cam 26 comes off the first surface 26A of the cam 26, the pin 21 engages the groove 20A. The second surface portion 26B of the cam 26 has the pin 21 in the concave groove 20A.
Although the movement of the lever 21 is restricted so that it does not come off, this second surface portion may be omitted.

As described above, the tape reel support shaft 3 and the support shaft 6 are connected via the gear train (gears 14, 15, 19, 18), and the clutch 17 is connected to the sleeve when the binding arm 7 is raised. 16 to the tape reel support shaft 3 is cut off.

In the above embodiment, when the binding arm 7 is in the upright position as shown in FIG. Therefore, since the pin 21 is separated from the groove 20A, the tape reel support shaft 3 can freely rotate clockwise in FIG. 1 together with the sleeve 16. In this state, as described above, the tape T is pressed between the tip of the binding arm 7 and the tape holding portion of the base 1 to insert the object to be bound. When the tape reel 4 is pressed, the tape reel 4 rotates and the tape T is fed out because the tape reel 4 is free to rotate together with the support shaft 3. Therefore, there is no problem such as the tape T slipping out from the tape holding portion.

After the objects to be bound are placed on the table 12, when the binding arm 7 is brought down to the base 1 side, it is necessary to rewind the excess tape T onto the tape reel 4. In the present invention, when the binding arm 7 begins to fall down, the lever 25
The second end 25B of the cam 26 comes off from the first surface 26A of the cam 26, and the pin 21 engages with the concave groove 20A, and the binding arm 7
The rotation is transmitted to the tape reel support shaft 3 through the gears 14, 15, 19, 18, the sleeve 16 and the one-way clutch 17, and the tape reel 4 rotates together with the support shaft 3 to return the tape. Any excess rotation of the tape reel support shaft 3 is absorbed by the sliding action of the friction clutch means 5. Here, if the frictional coupling force of the friction clutch means is weakened, the tightening force of the tape T will be weakened, and if the frictional coupling force is strengthened, the tightening force of the tape T will be strengthened, and the objects to be bound will be tightly bound.

Next, when the binding is completed and the binding arm 7 is raised, the pin 21 is engaged with the groove 20A, so that
The rotation of the binding arm 7 is transmitted to the sleeve 16,
Rotation transmission to the tape reel support shaft 3 is cut off by the one-way clutch 17. Therefore, the tape reel 4 is not rotated in the tape feeding direction. In this way, when the binding arm 7 returns to the upright position, the second end 25B of the lever 25 is moved to the first end of the cam 26.
The pin 21 comes into contact with the surface portion 26A and comes off the recess 20A, and the tape reel 4 becomes free.

Although one embodiment has been described above, the present invention is not limited to the above embodiment; for example,
The following modifications are also included.

The gear train that connects the tape reel and the binding arm may have any form other than the above, and the rotation transmission intermittent means cuts off the transmission of rotation between the tape reel and the binding arm when the binding arm is raised. is not limited to a one-way clutch, and the rotation transmission/disconnection means may be provided in any manner on the rotation transmission path between the tape reel and the binding arm.

A mechanism for allowing the tape reel to rotate freely when the binding arm is raised may be provided integrally with the rotation transmission/disconnection means, or a friction clutch mechanism may be integrally incorporated therein.

[Brief explanation of drawings]

FIG. 1 is a front view of a binding device showing an embodiment of the present invention. FIG. 2 is a rear view of essential parts of the device shown in FIG. 1.
FIG. 3 is a bottom view of essential parts of the device shown in FIG. 1. FIG. 4 is a sectional view taken along line A--A in FIG. 2. 1...Base, 3...Support shaft, 4...Tape reel, 7
... Binding arm, 14, 15, 18, 19... Gear, 17
...One-way clutch (rotation transmission/disconnection means), 18...
Movable gear, 19... Fixed gear, 20A... Concave groove, 21
...pin, 25...lever.

Claims (1)

[Scope of Claims] 1. A base having a freely rotatable tape reel is provided with a binding arm for winding the tape pulled out from the tape reel around an object by a tilting operation and for binding the ends of the wound tape. A binding device that is pivotably mounted to be foldable and connects the tape reel and the binding arm so as to give tape winding rotation to the tape reel when the binding arm is tilted, a fixed gear that rotates in conjunction with the tape reel; a movable gear that is rotatably and slidably attached to the support shaft of the tape reel and meshes with the fixed gear; and a recess that projects from the movable gear and is formed on the support shaft. an engaging member that can freely engage with the groove; a spring member that resiliently biases the movable gear in a direction in which the engaging member engages with the groove; one end of the spring member engages with the movable gear; The spring member has an end that can freely come into contact with a cam provided on the fixed gear, and is configured such that when the binding arm is tilted and the other end is in contact with the cam, the engaging member separates from the groove. a lever that presses the movable gear against the resilient urging force of the movable gear, and a lever provided between the movable gear and the support shaft;
A binding device comprising rotation transmission/intermittent means for cutting off transmission of rotational force from the movable gear to the support shaft when the binding arm is raised.