JPH044730B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a winding device that can wind a wire through a hole in a workpiece having a hole, such as in the production of a toroidal coil, for example.

[Prior Art] Conventionally, a shuttle type toroidal winding machine for winding a pair of wires as a wire around a core as a workpiece has generally been used. In that case, a ring-shaped shuttle is passed through the hole in the core, the winding material is stored in this shuttle, the shuttle is rotated in synchronization with the rotation of the core, and the winding material is wound while being tensioned and pulled out from the shuttle. do.

[Problems to be Solved by the Invention] In the above-described winding machine, the shuttle is required to have a certain degree of rigidity in order to provide tension to the wire. Therefore, the size (inner diameter) of the core that can be wound and the length that can be wound (depending on the amount of wire stored) are determined automatically. Currently, cores with smaller inner diameters are difficult to wind. Furthermore, as the inner diameter of the core becomes smaller, contact between the shuttle and the wire inside the core is more likely to occur, which tends to cause quality problems.

Therefore, an object of the present invention is to provide a winding device that can expand the limits of the inner diameter of the core and can be manufactured at low cost.

[Means for Solving the Problems] According to the present invention, in a winding device for winding a wire around a ring-shaped workpiece through a hole thereof, a holding mechanism that rotatably holds the workpiece, and a holding mechanism that rotatably holds the workpiece, and a holding mechanism that rotatably holds the workpiece, and A pair of drums that constantly rotate and draw a wire passed through a hole in the workpiece between their circumferential surfaces; a support device that movably supports each of the pair of drums in a predetermined direction perpendicular to both the adjacent direction and the rotational axis direction; a spring mechanism biasing each of the pair of drums in a first direction that pulls the wire in the predetermined direction; and a spring mechanism biasing one of the drums in the pair in a second direction opposite to the first direction. There is obtained a winding device characterized in that it includes a stopper for preventing movement, and a buffer device for damping movement of the other drum of the pair of drums in the first direction.

[Function] During winding, the holding mechanism clamps the workpiece and feeds it a fixed length without causing it to slip. After wrapping the wire around the workpiece, the tip of the wire is passed inside the workpiece and then inserted between a pair of rotating drums. The wire is then under tension, and as a result, the drum is moved by the tension. When one drum stops at the stopper, the pair of drums opens up and down,
Tension is released. One of the drums stopped by the stopper immediately returns due to the spring mechanism, but the other drum is cushioned from returning by the shock absorber and returns slowly.

[Embodiment] FIG. 1 shows a winding device according to an embodiment of the present invention. This winding device includes a core holding mechanism 1 . The core holding mechanism 1 is such that a double-edged timing belt 2 is wound around a drive pulley 3, a tension pulley 4, and pressure pulleys 5 and 6, and a core 7 as a workpiece is clamped so as to be wrapped around the belt 2. Moreover, the spring pressure of a spring (not shown) causes the arm 1 to
1 and 12 press against the core 7. In this way, slippage during rotation of the core 7 is eliminated, and the initial winding can be smoothly engaged.

Referring also to FIG. 2, a pair of drums 13 and 14 are arranged directly below the core 7 and are in contact with each other. These drums 13, 14 are indicated by arrows 16, 17.
It always rotates synchronously in the direction shown by , and is designed to catch the wire 18 passed through the inside of the core 7 as it is and pull it downward. wire 18
When the core 7 comes into close contact with the core 7 and can no longer be pulled, both drums 13 and 14 rise. That is, drum 1
3 and 14 are supported by housings 21 and 22 that can swing around a shaft 19. Here, the shaft 19 and the housings 21, 22 constitute a support device.

When the left drum 13 is stopped from rising by the stopper 23, the left drum 13 and the right drum 14 open at different levels. As a result, the tension is released and the drums 13, 14 are returned to the springs 24,
It descends and returns to its original position due to the urging force of 25. In this case, the left drum 13 returns immediately due to the return spring 24, but the right drum 14 returns slowly due to the action of the damper (buffer device) 26.
During this time, the wire 18 is pulled out from between the drums 13 and 14, and the next operation is started.

The removed wire 18 is again wound around the core 7 and fed between the drums 13 and 14 through the inside thereof. The supplied wire 18 is pulled as described above, and the lower part of the drums 13 and 14 is connected to the guide 27.
It is ejected towards the front.

By intermittently operating the motor 28 using a foot switch and a timer (both not shown), the wire 18 is wound while feeding the core 7 in pitches.

Note that 29 indicates a counter.

[Effects of the Invention] As explained above, in the winding device of the present invention,
It is possible to wind wires on cores with inner diameters that cannot be wound using the shuttle method without damaging the wires. Moreover, this device is simple in principle and can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a winding device according to an embodiment of the present invention, and FIG. 2 is a perspective view of the internal mechanism. DESCRIPTION OF SYMBOLS 1... Core holding mechanism, 7... Core, 13, 14... Drum, 18... Wire, 19... Shaft, 21, 22...
Housing, 23...stopper, 24, 25...return spring, 26...damper.

Claims (1)

[Claims] 1. In a winding device for winding a wire around a ring-shaped workpiece through a hole, a holding mechanism rotatably holds the workpiece, the holding mechanism rotates constantly with the circumferential surfaces of each other in contact, and the wire passed through the hole of the workpiece is wound around the circumferential surface. a pair of drums that are drawn in between each other; a support device that movably supports the drums in the pair in a predetermined direction perpendicular to both the adjacent direction and the direction of the rotation axis; a spring mechanism biased in one direction; a stopper for preventing movement of one drum of the pair of drums in a second orientation opposite to the first orientation; and the other of the drums of the pair. A winding device comprising a buffer device for damping movement of the drum in the first direction.