JPS62118735A - Winding method for multilayer coil - Google Patents

Abstract

PURPOSE:To facilitate production, by a method wherein the start wire of a necessary length is maintained, wire material is wound up from inside to outside to form a multilayer coil, and the start wire is led from inside to outside along the coil end surface, to be bonded to each other. CONSTITUTION:A nozzle 8 is moved, and the start end of wire material 5 is chucked by a start wire chuck 9. Then, after the nozzle 8 is moved to that a start wire 10 may enter the guide groove 7' of an end plate 6, the nozzle 8 is set at the position of the winding start of a winding. A distance between the chuck 9 and the end plate 6 is set to be equal to the length l of the start wire 10. The distance between end plates 6, 7 is set to be the height of a coil. The nozzle 8 is reciprocated in the directions shown in arrow heads, and a shaft 4 is rotated and wound up with the wire material 5 by a specified number of turns and layers, and the wound shaft 4 is stopped, and a finish wire is chucked 11. After that, the end plate 6 is separated from the coil 12 by the diameter length, and the start wire 10 is bonded to the end surface of the coil 12 from inside to outside. As a result, the production can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of winding a multilayer coil such as a bobbinless coil.

Conventional technology In recent years, in order to make motors thinner and lighter, built-in flat motors have come into use, for example, in which a bobbinless coil is adhesively fixed onto a board and a permanent magnet is placed opposite it. However, when using it, it is common to fix the end face of the coil to a reference plane, which requires high positional accuracy and parallelism on the reference plane, and this must be met by height restrictions from the reference plane. is now required.

Problems to be Solved by the Invention As shown in FIG. 6, for example, in a bobbinless coil, the start wire 27 is drawn out from the innermost circumference of the coil 28, so it must always cross the end face of the coil 28. I can't pull it out to the outside. Therefore, when fixing the coil to a flat substrate, for example, as shown in FIG.
Either use a board with a hole 31 to allow o to escape, or
As shown in FIG.
It is necessary to connect the two, which is an obstacle in both the design and work aspects.

Means for Solving the Problems In order to solve the above problems, the winding method of the present invention holds the start wire for a long time, and after winding, only the start wire is wound around the end face of the already wound coil. It has a process of winding it all the way to the outer circumference.

By adopting the above process, the present invention makes it possible to draw out the start wire from the outermost periphery of the coil, eliminates the need for design consideration when fixing the coil on the substrate, and provides a position that is easy to work with. You can connect the start line with .

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings. FIG. 2 shows an embodiment of the spindle rotation method. In the figure, reference numeral 4 denotes a winding shaft that is rotationally driven, and a wire rod 5 is wound around it to form a multilayer coil. 6 and 7 are end plates that regulate the height of the coil, and 6 has a groove 7 that guides the start line. 8 is a nozzle that traverses in the axial direction of the winding shaft. Reference numeral 9 denotes a start wire chuck that holds the tip of the start wire 10 at the beginning of the winding operation, and rotates together with the winding shaft during winding. A distance is provided between the end plate 6 and the chuck 9 to ensure the length l of the starting line 1Q to be wound in the final process. Reference numeral 11 denotes a finish line chuck O which rotates together with the winding shaft.Next, the operation of an embodiment of the above configuration will be explained.

First, the nozzle 8 moves to start the wire 5 into the wire chuck 9.
Let him chuck it. Next, the nozzle 8 is moved so that the start line 10 enters the guide groove 7 of the end plate 6, and then set at the position where the winding starts. Next, the winding shaft 4 rotates to wind the wire, and the nozzle 8 is traversed in synchronization with the rotation of the winding shaft 4. After the winding shaft 4 has rotated to a predetermined number of turns
1d stop L finish line is finish line chuck 1
1. Next, the end plate 6 is separated from the coil 12 by a distance corresponding to the wire diameter of the wire 5, and at the same time, the connection with the winding shaft in the rotational direction is removed. In this state, start line 1o
The winding shaft 4 is rotated in the opposite direction to the winding direction while applying appropriate tension to the coil 12, and the start wire 10 is wound from the inside 1 to the outside along the end face of the already wound coil 12. Finally, the wound coil is attached to the outer periphery of the wire material 5 and fixed by adhesion and fixation by means such as fusing resin etc. Next, the second embodiment of the present invention is carried out based on FIG. 3. Let's discuss an example. As shown in the figure, in the second embodiment, winding is performed using a 7-layer one-way system. 13 and 14 are flyers, flyer 13 is used for coil winding, flyer 14 is used for starting wire 15
Used with 0 rolls.

First, the start wire 15 is passed through the flyer 14, and the tip is fixed while holding only the length to be wound later. Next, flyer 13
The wire is traversed while rotating and wound onto the winding frame 16. After winding the required number of turns, the finish line is placed in the finish line chuck 17, and the tip of the start line 15 is removed to apply appropriate tension. Next, similarly to the first embodiment described above, the winding frame end plate 1 on the start line side is
8 moves by one turn, and a start line 16 is placed between this end plate 18 and the coil 2o by the flyer 14.
Wrap around. Finally, the coil 20 is fixed with adhesive and taken out.

Further, a third embodiment of the present invention will be explained based on FIG. 4. In the third embodiment, after winding the coil 21, as shown in FIG. 4a, the coil 21 is heated to heat the coil 21, and each wire of the coil 21 is bonded and fixed with resin on the outer periphery of the wire. After that, the end plate 22 is moved and the start wire 23 is wound along the side surface of the coil 21 from the inside to the outside. By using this method, it is possible to prevent winding irregularities due to movement of the end plate 22 even when the coil is required to be wound in an aligned manner.

In the first embodiment, the start line in the figure was extended and held in the direction of the winding axis, but as shown in FIG.
Alternatively, the start line 25 may be wound using a wire. Furthermore, although the third embodiment has been described using the rotation of the winding shaft, the same effect can be obtained even with a seven-layer system.

Effects of the Invention As described above, in the present invention, after normal winding, only the start wire is tightly wound on the end face of the multilayer coil, and the tip portion thereof is exposed to the outer periphery of the coil, thereby making it possible to wind the coil on a flat surface. This is extremely effective as it eliminates the difficulty of assembling by allowing the start wire to escape for fixing, and by soldering at the center of the coil, making product design easier.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an air-core coil wound by the winding method of the present invention, FIG. 2 is an explanatory diagram of the first embodiment of the present invention, and FIG. 3 is an explanatory diagram of the second embodiment of the present invention. , Figure 4 a and b are the same Figure 3.
Fig. 5 is an explanatory drawing showing a method of holding the start line in the first embodiment and winding it around the drum from a straight line; Fig. 6 is a perspective view of a conventional air-core coil. 7 and 8 are explanatory diagrams of examples of mounting a conventional air-core coil on a flat substrate. 1...Start wire, 2...Coil, 3
...Finishing line, 4...Volume M%
817...End plate, 8...Nozzle, 9...Start line chuck, 11...
...Finish line chuck, 13.14...
- Flyer, 16...Reel frame. Name of agent: Patent attorney Toshio Nakao and one other person7.
7--Flyer (Connection 4 Mj IG'--Kichiku↓↑ /7--Fui, =27 Sheet 1. Rinu, f9--
-xyI-P-L-1- 1;1 Summary Fig. 4 22-11 Ent゛7° Mood ((1,12j--One-way tart push 25--Suge F edge 2.9 33--Gozuru

Claims (2)

[Claims] (1) The process of securing and holding the start wire of the coil to the length necessary for winding in the later process, the process of winding the wire from the inside to the outside to form a multilayer coil, and the process of starting the coil. A method for winding a multilayer coil comprising the steps of: winding the wire along the end face of the multilayer coil from the inside to the outside until it reaches the outer periphery of the coil; and fixing the wire with adhesive to maintain the coil shape. (2) The method for winding a multilayer coil according to claim 1, wherein the step of forming the multilayer coil includes the step of adhesively fixing the formed multilayer coil.