JPS6366913A - Manufacture of toroidal coil - Google Patents

Abstract

PURPOSE:To obtain a toroidal coil, to which winding is conducted uniformly and which has excellent quality, by holding a core assembly, in which a flexible plate is wound on the outer circumference of a core, by a core holder and winding a winding material on the core, removing the flexible plate from one end. CONSTITUTION:Rollers 1A, 1B, 1C are shifted and adjusted by a handle not shown and an annular core 7 is placed onto a collar plate 2, and the rollers 1 are brought into pressure-contact with the outer circumference of the core 7 from three directions and the core 7 is held. A core assembly 10 is formed by winding a plate 9 consisting of a flexible material such as a rubber and having approximately the same size as the diameter of a winding material on the outer circumference of the annular core 7 in approximately a circular manner. The core assembly 10 is turned, removing the plate 9 after passage through the roller 18 from the core 7, and the winding material is wound on the core 7, from which the plate 9 is peeled, by a shuttle 8. Accordingly, the core 7 is rotated without displacing the center thereof for the whole period of the winding of the winding material in the presence of the plate 9, thus keeping the winding pitches of the winding material constant.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing toroidal coils, specifically, aligned-heavy-wound coils and random-wound coils using a winding machine.

(Prior art) A winding machine for making a toroidal coil by winding a toroidal core around an annular core has a core holding device that rotates the core around its axis, and a core holding device that rotates the core around its axis. The shuttle includes a shuttle which is introduced into the core and rotatably supported so that the winding material is stored and then unwound to be wound around the core, a core holding device, and a synchronous drive H position for the shuttle.

The core holding device consists of three rubber rollers 1 (IA
, 1B, IC).

The lower ends of the rollers IA and 1B are pivotally supported on the other end side of the base plate 3, which can be rotated horizontally as shown by the arrow around one end side.
This is a drive roller that is fitted coaxially with the upper end of an upright shaft 4 that is driven by a drive mechanism built into the base plate 3.

The roller IC is a driven roller fitted into the upper end of an upright shaft 6 whose lower end is pivotally supported at the end of the base plate 5. It can move linearly along the bisector as shown by the arrow, and has built-in biasing means in the direction of the outlined arrow.

The annular core 7 is placed on the collar plate 2 by adjusting the movement of the rollers IA, 1B, and IC using handles (not shown), and the core 7 is held by pressing the rollers 1 against the outer periphery of the core 7 from three sides. A shuttle 8 (parts indicated by chain lines) is introduced into the center hole of the core 7 from its introduction port and is crossed so that the inner periphery of the shuttle 8 is rotatably supported by an internal roller. For example, the wire is rotated in a direction passing through the core from bottom to top) to store a required length of winding material in its outer circumferential wire storage groove.

Next, after holding the winding start end on the locking part, the shuttle 8 is rotated in the opposite direction to the line storage direction (the shuttle 8 passes through the core from top to bottom), and at the same time, the core 7 is rotated in synchronization with the rotation of the shuttle 8. (for example, clockwise when viewed from above) and roller IA, 1
The winding material was wound around the core 7 in the middle of B, and the winding material was wound either in an aligned manner or in a random manner up to about 90% of the circumference of the core 70 to create a toroidal coil.

[Problem that the invention seeks to solve]

Conventionally, the core 7 was brought into direct contact with the roller 1 of the core holding device, so the winding material wound around the core 7 was brought into direct contact with the roller 1.
There is a problem in that the winding pitch of the winding material changes each time it reaches the stage of contact with the wire. The contact stage between the roller IA and the winding material is shown in FIG. 5. At the beginning of the first winding, the roller IC and the core 7, which are at the position shown by the dashed line, are displaced as shown by the solid line, that is, the center of rotation of the core 7. The point moves and its relative relationship with the axis of the shuttle 8 changes. Therefore, the winding pitch of the winding material varies, and in the case of aligned winding, the winding up is uneven, resulting in a poor appearance of the coil.

[Means for solving problems]

The present invention provides a method for manufacturing a toroidal coil using a winding U* equipped with a core holding device and a shuttle so as to hold the core by pressing against the outer periphery of a roller-shaped annular core and rotate the core around its axis. A core assembly in which a flexible plate having a required thickness is wound around the outer periphery of the core is held by a core holding device, and the winding material is wound around the core while removing the flexible plate from one end. do.

〔Example〕

In FIG. 0, which describes an embodiment of the present invention in the case of aligned winding with reference to FIGS. 1 to 3, the same parts as in FIG. 4 are given the same reference numerals.

FIG. 1 shows the core assembly 10 held by rollers l. The core assembly 10 includes a plate 9 made of a flexible material such as rubber and having a thickness that is approximately the same as the diameter of the winding material.The plate 9 is made of a flexible material such as rubber and has a thickness that is approximately the same as the diameter of the winding material. The plate 9 is held by the roller 1 so that the starting end of the plate 9 is located between the rollers IA and 1B (position a facing the shuttle 8). Peel the plate 9 from the roller IB to the end from the core 7, and remove the plate 9 from the roller IB to the end.
The guide member 11 is inserted into the U-shaped groove of the guide member 11 provided between the shuttle 8 and the shuttle 8.

The shuttle 8 is introduced into the core 7 in the state shown in FIG. 1, and after the wire is stored, the winding material is wound.

The shuttle 8 rotates in a direction passing through the core 7 from above to below, and the core assembly 10 is rotated by the drive rollers IA and 1B as shown by the arrow, so that the winding material is wound around the core 7 once. It is shown in Figure 2.

After passing the roller 1B, the core assembly 10 is rotated while removing the plate 9 from the core 7, and the core 7 from which the plate 9 has been removed is advanced to a position opposite the shuttle 8, and the winding material is wound. be exposed. The plate 9 is moved by the shuttle 8 by the guide member 11.
It is guided so as not to disturb 0 rotation.

Figure 3 shows that the winding material is being wound on the roller I.
It shows the state of contact with A. The center of rotation of core assembly 10 is the same as in FIG. It will be understood without further explanation that the center of rotation of the core 70 remains at the same point even at the stage when the winding material contacts the rollers IC and IB.

In this manner, the core 7 rotates without shifting its center throughout the entire winding period of the winding material, so that the winding pitch of the winding material can be maintained constant. Therefore, in the case of aligned winding, it is possible to wind up neatly without holes.

(Effects of the Invention) Although the case of aligned winding has been described as an example, even when a thin wire is randomly wound so that the winding becomes thicker than the wire diameter on the outer surface of the core, the plate 9 having a thickness corresponding to the winding thickening can be used. If used, the winding pitch can be kept constant as well.

According to the present invention, since the winding pitch of the winding material is constant, the tension acting on the winding material is also approximately constant, and a high-quality toroidal winding machine with uniform winding can be obtained.

[Brief explanation of the drawing]

1 to 3 are plan views showing rollers of a core holding device for explaining one embodiment of the present invention, FIG. 4 is a perspective view showing main parts of a core holding device of a toroidal winding machine, and FIG. 511!
ff is a plan view of a roller portion of a core holding device showing a conventional core holding state. l...Rubber roller, IA, 1B...Drive roller,
IC...driven roller, 2...flange plate, 3,5...
・Bed plate, 4° 6... Axis, 7... Annular core, 8...
- Shuttle, 9... Flexible plate, lO... Core assembly, 11... Guide member. Patent applicant: Tohoku Metal Industry Co., Ltd. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] Manufacturing a toroidal coil using a winding machine equipped with a shuttle and a core holding device that holds a plurality of rollers in contact with the outer periphery of an annular core and rotates the core around its axis. A method for manufacturing a toroidal coil, characterized in that a core assembly in which a flexible plate is wound around the outer periphery of the core is held by the holding device, and a winding material is wound around the core while removing the flexible plate from one end. Method.