JPH0531865U - Disconnecting device for cutting wire - Google Patents

Abstract

(57) [Summary] [Purpose] In the process of winding the wire of the reel on the rewind side to the wire-rewinding reel, the tension of the wire is kept low, so that there is no obstacle to disassembling the wire-reel and the winding speed is also possible. It is to be able to raise it as much as possible. [Structure] In the process of winding the wire of the reel on the rewind side to an unwinding reel that can be disassembled, the motor on the rewind side is forcibly rotated in the wire rewind direction and the rotation of the motor is also rotated. By the transmission means and the torque conversion means, the speed is increased and the torque is transmitted to the unwinding reel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is for winding the cutting wire of the wire cutting device from the reel on the rewinding side to the unwinding reel and for disassembling the unwinding reel so that it can be disposed as a coil for disposal. Regarding the wire breaking device.

[0002]

[Prior Art]

 In the wire cutting device, a new wire is supplied from the reel on the sending side to the cutting process and wound on the reel on the winding side. Used wire is taken up from the take-up reel to a dismantling unwinding reel for reuse of the take-up reel.

FIG. 1 shows the configuration of a conventional wire breaking device for a cutting wire. The reel 2 and the unwinding reel 3 on the rewinding side are rotatably supported in parallel on a base 8 by a pair of shafts 4 and bearings 5, a pair of shafts 6 and bearings 7, respectively. It should be noted that one of the shafts 4 and 6 with a handle can be retracted in the axial direction so that the reel 2 on the rewinding side and the unwinding reel 3 can be freely removed. By advancing by the action of a coil spring or the like, it hits the center of one end of the reel 2 on the rewinding side and the unwinding reel 3 and can rotatably support the reel 2 and the unwinding reel 3 together with the other shafts 4 and 6. Has become.

The driving motor 9 is mounted on the base 8 and is connected to one shaft 6 by a shaft joint 10. The interlocking arm 11 fixed to the shaft 6 is used to drive the reel reel. A rotational force in the winding direction is applied to 3. At this time, the used cutting wire 12 wound around the reel 2 on the rewinding side is wound around the outer circumference of the winding drums 31 and 32 of the disassembly wire reel 3.

FIG. 2 shows an example of the disassembling solution reel 3. The two winding cylinders 31, 32 are configured as a truncated cone having a small outer diameter in the central portion, but are abutted at the upper bottom portion, and are integrated by a central bolt 33 and a nut 34.

[0006]

[Problems of the prior art]

 During the winding process, since the static inertia of the reel 2 on the rewinding side is large and a large tension is applied to the wire 12, the winding tension of the wire 12 on the unwinding reel 3 has a large value. As a result, after winding, a large force acts on the winding drums 31 and 32 of the unwinding reel 3 in directions away from each other due to the principle of the slope, so that a large force acts on the tightened portions of the bolt 33 and the nut 34. The bolts 33 and the nuts 34 are difficult to remove due to the large tightening force. Further, from the viewpoint of work efficiency, if the rotation speed of the winding is increased, the wire 12 will be broken, so that the winding speed is also limited.

[0007]

[The purpose of the device]

 Therefore, the purpose of the present invention is to reduce the tension of the wire in the process of winding the wire of the reel on the rewind side to the wire reel, to prevent the trouble of disassembling the wire reel, and to enable the winding speed. It is to be raised as much as possible.

[0008]

[Means for solving the problem]

 According to the present invention, in the process of winding the wire of the reel on the rewinding side into a disassembling solution reel, the reel on the rewinding side is rotated in the wire rewinding direction by a motor. At the same time, the rotation of the motor is transmitted to the unwinding reel as a low torque while being accelerated by the rotation transmitting means and the torque converting means, whereby the reel on the rewinding side is forcibly rotated and at the same time, this rotation is performed. It is designed to rotate the wire-breaking reel with an appropriate torque while being linked with. As a result, the tension of the wire at the time of winding is suppressed to a low level, so that the wire reel can be disassembled without any trouble, and the winding speed can be set to a high value, resulting in higher work efficiency.

[0009]

Embodiment FIG. 3 shows a wire breaking device 1 for a cutting wire according to the present invention. The reel 2 on the rewinding side and the unwinding reel 3 are rotatable in a parallel state with respect to the base 8 by a pair of shafts 4, a bearing 5, a pair of shafts 6 and a bearing 7, respectively, in the parallel state. Supported by. Then, one shaft 4 of the reel 2 on the rewinding side is connected to a motor 9 by a shaft coupling 10 and can be rotated together with the reel 2 by an interlocking arm 14. The other shaft 6 on the take-up side can be rotated together with the wire-breaking reel 3 by the interlocking arm 11 in the same manner as in the conventional example, and the other end portion is for limiting the rotation speed. Is connected to the braking means 15. The braking means 15 is composed of, for example, an electromagnetic powder brake or a centrifugal brake.

The rotation of the driving shaft 4 is transmitted to the driven shaft, that is, the shaft 6 of the unwinding reel 3 by the rotation transmitting means 16. The rotation transmission means 16 includes, for example, a large pulley 17 fixed to the shaft 4, a small pulley 18 on the shaft 6 side, and a belt 19 wound around these pulleys. It is constituted by a torque converting means 20 which is interposed between the pulley 18 and the pulley 18. The torque converting means 20 is constituted by a fluid coupling or a fluid type torque converter, preferably a rolling bearing containing a viscous body (high viscosity lubricating oil), and the rotational torque of the small pulley 18 is sealed inside by the fluid resistance (viscosity). It is transmitted to the shaft 6 as a low torque due to resistance.

At the time of rewinding the wire 12, the motor 9 forcibly rotates the reel 2 in the rewinding direction by rotating the shaft 4 by the moving arm 14 to move the wire 12 in the direction of the unwinding reel 3. Send to. On the other hand, the rotation of the shaft 4 is transmitted from the large pulley 17 to the small pulley 18 while being accelerated, and is transmitted to the shaft 6 as a low torque by the torque converting means 20 and is released via the interlocking arm 11. It is transmitted to the wire reel 3 as rotation in the winding direction.

During this winding process, the reel 2 on the rewinding side is forcibly driven in the feeding direction by the motor 9, so that the stationary inertia of the reel 2 does not act on the wire 12 being fed, and thus the feeding The tension of the wire 12 therein is kept as low as possible. At this time, the rotation transmitting means 16 transmits the rotation of the shaft 4 to the shaft 6 while accelerating the rotation of the shaft 4, thereby sending out the wire 12 regardless of the change in the winding diameter of the reel 2 on the rewinding side or the unwinding reel 3. The solution reel 3 is driven at a speed that follows the speed. Therefore, the wire 12 is wound between the unwinding reel 2 and the unwinding reel 3 with an appropriate tension without sagging. In the winding process, the braking means 15 applies an appropriate braking force to the shaft 6 to suppress the increase in the rotation speed of the unwinding reel 3 on the winding side within an appropriate range. Moreover, since the torque converting means 20 applies an appropriate low winding torque to the shaft 4, the wire 12 is wound around the outer circumference of the winding drums 31 and 32 of the unwinding reel 3 under a low tension. To go.

After the winding of the wire 12 is completed, the wire 12 wound around the unwinding reel 3 is removed from between the pair of shafts 6, and the two winding cylinders 31 and 32 are disassembled, that is, the winding state, that is, It is ready to be disposed of in the coil form. At this time, since the tension at the time of winding the wire 12 is small, the force in the separating direction that acts on the winding drums 31 and 32 is small, and therefore the tightening force between the bolt 33 and the nut 34 is not much higher than in the initial state. Therefore, the nut 34 can be removed from the bolt 33 with the initial torque of tightening. Therefore, the wire break reel 3 can be easily disassembled.

[0014]

[Effect of the device]

 In the present invention, the reel on the rewinding side is forcibly driven by the motor, and the unwinding reel is driven by the rotation transmitting means and the torque converting means which are interlocked with the motor in an accelerated state under a low torque. Therefore, the tension of the wire is kept low during the winding process, and the reel on the rewind side and the unwinding reel are both driven. High-speed winding is possible because the wire is not cut during a series of operations.

[Brief description of drawings]

FIG. 1 is a plan view of a conventional wire breaking device for a cutting wire.

FIG. 2 is an enlarged sectional view of an unwinding reel.

FIG. 3 is a plan view of the cutting wire unwinding device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Breaking wire unwinding device 2 Rewinding side reel 3 Unwinding reel 9 Motor 12 Wire 15 Braking means 16 Rotation transmitting means 20 Torque converting means

Claims (3)

[Scope of utility model registration request] 1. A drive motor for rotating the reel on the rewinding side in the rewinding direction of the wire in order to wind the wire on the reel on the rewinding side into an unwindable reel.
A wire breaking device for a cutting wire, comprising: a rotation transmitting means for transmitting the rotation of the motor to the wire releasing reel while accelerating the rotation thereof; and a torque converting means incorporated in the rotation transmitting path. 2. A drive motor for rotating the reel on the rewinding side in the rewinding direction of the wire in order to wind the wire of the reel on the rewinding side into a disassembling reel.
Rotation transmitting means for transmitting the rotation of the motor to the breaking wire reel while increasing the speed, torque converting means incorporated in the rotation transmitting path, and braking means for limiting the rotating speed of the breaking wire reel to a predetermined range or less. An unwinding device for a cutting wire, comprising: 3. The disconnecting device for a cutting wire according to claim 1, wherein the torque converting means is constituted by a viscous body-encapsulated rolling bearing.