JPS63208205A - Manufacture of multilayer superconducting coil - Google Patents

Abstract

PURPOSE:To improve a manufacture efficiency by a method wherein the remaining part of a lower layer coil and an upper layer coil are formed simultaneously by applying wires of the two coils to a same bobbin in parallel while superposing one wire to the other. CONSTITUTION:One bobbin 2 is used and a winding core 3a for a lower layer coil 1a is attached to the surface of the bobbin 2. A wire 4a for the lower layer coil 1a is wound on the circumference of the winding core 3a along the surface of the bobbin 2. When the winding reaches an angle theta1, a wire 4b for an upper layer coil 1b is supplied in addition to the wire 4a while superposing one wire to the other in parallel to the thickness direction. In the region of the angle theta2, the wire 4a for the lower layer coil 1a is further continually wound and, at the same time, the wire 4b is applied to the circumference of a winding core 3b. After the winding of the upper and lower layer coils 16 and 1a is completed, the coils 1a and 1b are simultaneously pressed and molded with one molding die with the forming surfaces for both the layer coils. With this constitution, the number of winding operations are halved to two.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for manufacturing superconducting saddle-shaped coils and lace-trunk coils, and more specifically, a method for manufacturing superconducting saddle-shaped coils and lace trunk-shaped coils, and more specifically, an efficient and economical method for manufacturing multiple coils in which a plurality of coils are stacked in multiple stages. Relating to a method for manufacturing.

[Conventional technology]

For example, as shown in FIG. 2, a superconducting saddle-shaped coil 1 in which coils 1a and 1b are stacked in two layers has a lower layer coil 1a1.
Prepare a winding frame and a winding core that match each of the upper layer coils 1b,
For both the coils 1a and 1b, as shown in FIG. 3, a coil wire 4 is wound around a winding core 3 placed on each winding frame 2 to form a total of 4 coils, 2 lower layer coils and 2 upper layer coils. The simplest method is to make individual coils, press-form them individually, and then stack them together as shown in FIG. 4.

[Problem that the invention seeks to solve]

However, according to the above conventional method, it is necessary to perform at least the same number of winding operations and press forming operations as the number of individual coils, and it is also necessary to prepare the same number of winding frames, cores, and molding dies as the number of coil layers. However, there have been problems in that the manufacturing efficiency is not excellent and it is also economically disadvantageous.

The present invention aims to eliminate the above-mentioned problems found in conventional manufacturing methods.

[Means for solving problems]

In order to eliminate the above-mentioned problems, in the present invention, when winding the coil wire material around the winding core fixed on the winding frame, the winding of the lower layer coil is overlapped on the winding core for the lower layer coil. When the wire rods of the lower layer coil and the upper layer coil are wound thick enough to line up with the wire winding surface of the coil winding core, the wire rods of the lower layer coil and the upper layer coil are fed at the same time, and the wire rods are stacked in parallel in the thickness direction of the coil and wound. After finishing, the coils of each layer were press-molded all at once using one mold.

FIG. 1 is a diagram illustrating the winding process of the method of the present invention using a two-layer saddle-shaped coil for easy understanding. In this way, only one winding frame 2 is used, and the winding core 3a for the lower layer coil 1a is attached on the surface of the winding frame 2. In addition, the winding core 3 for the upper layer coil 1b
b may be installed in advance on the winding core 3a with the center bent once, or may be installed at the time when the winding of the lower layer coil is thickened to the position θ1, which will be described later, or just before that.

Next, the wire 4a for the lower layer coil is wound around the outer periphery of the winding core 3a along the surface of the winding frame 2, and when the winding is thickened to the angle θ1, the wire 4b for the upper layer coil is added. The two wire rods 4a and 4b are fed in the thickness direction of the coil (winding frame 2
In the region of angle θ2, the wire 4a of the lower coil 1a is further wound while being overlapped in parallel in the radial direction of the winding core 3b.

Further, when winding of the upper and lower layers of coils 1a and 1b is completed in this manner, the coils 1a and 1b are simultaneously press-molded using one molding die having a forming surface for each layer of coils.

In addition, 3Jl! The above coils and racetrack coils that are wound using a flat winding frame can also be wound using the same concept as above.

Reference numerals 5a and 5b in FIG. 1 are supply bobbins for the wire rods 4a and 4b, and it is desirable to keep the winding tension of the wire rods supplied from these bobbins constant using a tension roller (not shown) or the like.

[Action/Effect]

According to the above-mentioned method of the present invention, the remaining portion of the lower layer coil and the t= wire of the upper layer coil are simultaneously processed while stacking the wire rods in parallel on the same winding frame. For coils with a layered dipole structure, the number of winding operations that conventionally required four times is halved to two, and since the coils of each layer are press-formed all at once, the number of winding operations that previously required four times is reduced by half. The molding process that was previously required only needs to be performed twice, and therefore the manufacturing efficiency of the multilayer coil is greatly improved.

Furthermore, since only one type of winding frame is required regardless of the number of coils, and one type of molding die is also required, it is economically very advantageous.

In addition, when combining individual coils after molding, it is necessary to pay attention to ensuring accuracy, but since the laminated coils are press-molded in this invention, it is also easier to ensure the accuracy of the coil, which is an additional effect. .

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the coil showing the winding process of the method of the present invention, Fig. 2 is a cross-sectional view of a two-layer saddle-shaped coil, and Figs. 3 and 4 are conventional coils of the coil shown in Fig. 2. FIG. 1...Superconducting saddle-shaped coil, 1a...Lower coil, 1b...Upper layer coil, 2...
- Winding frame, 3a... Winding core for lower layer coil, 3b...
...Winding core for upper layer coil, 4a, 4b...Coil wire material, 5a, 5b...Supply bobbin.

Claims (1)

[Claims] When winding the coil wire around the winding core placed on the winding frame, the winding of the lower layer coil is aligned with the wire winding surface of the upper layer coil core which is stacked on the lower layer coil core. When the wires of the lower layer coil and the upper layer coil are thickened to a certain point, the wire rods of the lower layer coil and the upper layer coil are supplied simultaneously, and the wire rods are wound while stacking them in parallel in the coil thickness direction, and after the winding is completed, the coils of each layer are packaged in one mold. 1. A method for manufacturing a multilayer superconducting coil, which comprises press-molding the multilayer superconducting coil.