JPH044731B2 - - 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 winding material as a wire around a core as a workpiece is generally 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 the pair of drums in a predetermined direction perpendicular to both the adjacent direction and the rotational axis direction; a spring mechanism biasing the drum in a first direction to pull the wire in the predetermined direction; and a stopper preventing movement of the pair of drums in a second direction opposite to the first direction. However, there is obtained a winding device characterized in that a notch is provided on the circumferential surface of the drum to help take out the wire from between the drums.

[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. After the drum stops moving at the stopper, the wire is taken out through the notch on the drum's circumference. As a result, the drum quickly returns to its original position due to the spring mechanism.

[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.

Directly below the core 7 are a pair of drums 1 that are in contact with each other.
3 and 14 are arranged. Notches 16 and 17 are formed on the peripheral surfaces of the drums 13 and 14.
The role of the notches 16 and 17 will be described later. These drums 13 and 14 always rotate synchronously in the directions shown by arrows a and b while being in contact with the circumferential surface, and after winding the core 7 once, the wire 18 passed inside the core 7 is passed directly onto the circumferential surface. It is designed to fit in between and pull downward. wire 18 is core 7
When the wire 18 is brought into close contact with the wire 18, tension is generated in the wire 18.

Referring also to FIG. 2, the drums 13 and 14 are
A housing 21 that can swing using 9 as a fulcrum,
It is supported by 22. Here, the shaft 19 and the housings 21, 22 constitute a support device. Due to the tension described above, both drums 13, 14 are pulled up. The raising of the drum 13 is stopped by a stopper 23. At the same time, a limit switch (not shown) operates to detect that the wire 18 has been wound around the core 7 once. After the raising of the drum 13 is stopped by the stopper 23, the wire 18 is connected to the drum 1.
Take it out from 3 and 14 towards the front. At this time, the wire 18 is connected to the notches 16, 17 of the drums 13, 14.
It can be easily taken out. That is, drum 1
The notches 16 and 17 of 3 and 14 are the wire 1
8 from between the drums 13 and 14. When the wire 18 is taken out from between the drums 13 and 14, the drums 13 and 14 are moved by the return springs 24 and 25.
It descends and returns to its original position due to the urging force of.

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 guide 27 below the drums 13, 14
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 pitchwise in the rotational direction.

Note that 29 indicates a counter.

[Effects of the Invention] As explained above, in the winding device of the present invention,
Wire can be wound on cores with inner diameters that cannot be wound using the shuttle method without damaging the wire. Furthermore, 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, 16, 17... Notch, 18... Wire, 19... Shaft, 21, 22... Housing, 23...
Stopper, 24, 25...Return spring.

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 pair of drums in a predetermined direction perpendicular to both the adjacent direction and the rotation axis direction, and a first direction in which the wire is pulled in the pair of drums in the predetermined direction. a spring mechanism biased to the first of the pair of drums;
The winding includes a stopper that prevents the wire from moving in a second direction opposite to the direction of the wire, and a cutout portion is provided on the circumferential surface of the drum to help take out the wire from between the drums. line equipment.