JPS62141943A - Flat coil manufacturing equipment - Google Patents

Abstract

PURPOSE:To uniformize a heating temperature and an applying pressure for bonding by forming high frequency induction heating means in a wiring structure that an oscillation of a high frequency induction current becomes dense around a rotor hub. CONSTITUTION:In high frequency induction heating means 5, wirings around a recess 41' around a rotor hub 3 of a work coil 51 are formed in a two type structure. In pressurizing means 4, a pressurized portion 42 is split on a pressurizing direction into a portion 42' for pressing the hub 3 and a portion 42'' for pressing the other portion, and a buffer material 43 is mounted on the top of the portion 42'' for pressing the hub 3. With this construction, an oscillation of a high frequency current becomes dense around the hub 3, the absorption of heat to the recess 41' and the hub 3 is cancelled to uniformize heating temperature. Since an applying pressure to the hub 3 is attenuated by the material 43, the applying pressures to the respective portions are uniformized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for manufacturing a flat coil to be incorporated into a flat motor, etc. More specifically, the present invention relates to a manufacturing device for a flat coil to be incorporated into a flat motor, etc. This invention relates to improvements in manufacturing equipment for assembling armatures and rotor hubs.

[Conventional technology]

As a flat coil incorporated into a flat motor or the like, for example, the one shown in FIG. 4 is known.

This flat coil has a structure in which an armature 1 is fitted and assembled to a rotor hub 3 via a disc-shaped insulating material 2. A shaped insulating material 12 is provided.

The present applicant previously proposed Japanese Patent Application No. 178220/1983 regarding the assembly of the flat coil armature 1 having such a structure and the rotor hub 3, and achieved improvement in productivity and cost reduction. There is.

Hereinafter, this applicant's earlier application will be summarized based on FIGS. 4 and 5.

The armature 1 has a disc-shaped insulating material (epoxy resin-impregnated glass cloth prepreg) 12 arranged between a large number of flat coil wires 11 formed from a plate-shaped conductive material such as a copper plate by a notching press. By holding it between heating plates heated to C, it is heated and pressurized for about 20 seconds under a pressure of 20 kg/cnl, and after the surface, the inner circumference I and the outer circumference O are cut, and the flat coil wire 11 is welded with argon. It is made by connecting the .

This temporarily bonded armature 1 is fitted to the rotor hub 3 via the disc-shaped insulating material (same material as above) 2, and the fifth
The actual gluing of armature 1 and armature 1. The rotor hub 3 is bonded at the same time.

The device shown in FIG. 5 has four parts 4 to which the rotor hub 3 is fixed.
1, a pressurizing means 4 consisting of a base 41 having a base 41 and a pressurizing section 42 that can be moved up and down on the base 41, and a high frequency induction heating means 5 consisting of a work coil 51 built into the base 41. The armature 1 is pressed against the rotor hub 3 through the disk-shaped insulating material 2 by lowering the pressure member 42, and the disk-shaped insulating material 12.degree. 2 is hardened by energizing the work coil 51. Note that the work coil 5
When a heating wave current is applied to 1 for about 20 seconds at 8000 volts, the flat coil wire 11 generates heat to about 190°C.

The disk-shaped insulating material 12°2 is hardened by the heat generated by the flat coil wire by the high-frequency induction heating means 5,
In order to press the armature 1 against the rotor hub 3 by the pressure means 4, the armature 1 is permanently bonded and the armature 1. The rotor hub 3 is bonded at the same time, and the deterioration of the disc-shaped insulating material 12 is avoided by reducing the heating process, compared to a method in which the armature 1 and the rotor hub 3 are assembled after performing the final bonding work on the temporarily bonded armature 1. By saving heating energy and simplifying the equipment,
Improved productivity and lower costs are achieved.

[Problem that the invention seeks to solve]

In the above-mentioned earlier application of the present applicant, the recess 41' of the base 41
Since high-frequency induction heat is absorbed by the rotor hub 3 and the rotor hub 3, which is usually formed of a metal material, the rotor hub 3 and the armature 1 are bonded together, and the flat coil wire 11 and the disc-shaped insulating material 1 are bonded together.
The temperature for the final bonding between the rotor hub and the rotor hub decreases three times, and the bonding strength may decrease. Furthermore, due to the presence of the recess 41', the pressing force applied by the pressurizing section 42 to the rotor hub 3, the assembly portion of the rotor hub 3 and the armature 1, and the armature 1, respectively, becomes uneven, resulting in uneven adhesive strength. At the same time, product finish accuracy such as flatness may deteriorate.

[Purpose of the invention]

The present invention has been made in order to solve the problems of the applicant's earlier application mentioned above, and its purpose is to improve the manufacturing equipment so that the adhesive strength and product finish accuracy of the flat coil to be manufactured are improved. It's about improving.

[Means for solving problems]

A flat coil manufacturing apparatus according to the present invention fits a temporarily bonded armature made of a disc-shaped insulating material between a large number of coil wires to a rotor hub via the disc-shaped insulating material,
In a flat coil manufacturing device equipped with a high-frequency induction heating means and a pressure means for simultaneously performing the main bonding of a temporarily bonded armature and the bonding of a temporarily bonded armature and a rotor hub,
The high-frequency induction heating means has a wiring structure in which the high-frequency induced current oscillates densely when the rotor hub becomes cloudy, and the pressurizing means has a buffer structure so that the pressurizing force applied to the rotor hub is attenuated compared to the pressurizing force applied to other parts. It is something.

[Action of the invention]

In the flat coil manufacturing apparatus according to the present invention, the wiring structure actively supplies high-frequency induction heat around the rotor hub, and the buffer structure prevents unnecessary pressure from being applied to the rotor hub.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a flat coil manufacturing apparatus according to the present invention will be described below with reference to FIGS. 1 to 3.

The present invention has a basic structure based on the structure of the applicant's earlier application shown in FIG. 5, and has improved the structure of the high-frequency induction heating means 5 and the pressurizing means 4.

The high-frequency induction heating means 5 is improved by making the wiring around the recess 41' surrounding the rotor hub 3 of the work coil 51 double-layered. The additional work coil 52 may constitute a separate circuit from the work coil 51, but as shown in FIG. It is preferable in terms of structure and workmanship to construct the work coil 52 that is added integrally.

In the pressurizing means 4, the pressurizing part 42 is divided into a part 42'' that presses the rotor hub 3 and a part 42'' that presses other parts on the pressurizing direction line, and a part 42' that presses the rotor hub 3 is divided into An improvement has been made by attaching a cushioning material 43 made of rubber material or the like.

Note that a heat-resistant material 44 is attached to the pressing surface of the base 41 of the pressurizing means 4 and the pressurizing part 42 to make the heating temperature uniform.

According to such an improvement of the structure, the oscillation of the high frequency current around the rotor hub 3 becomes denser, causing the recess 41.

The heating temperature is made uniform by offsetting the absorption of heat into the rotor hub 3. Further, since the pressure applied to the rotor hub 3 is attenuated by the cushioning material 43, the pressure applied to each part is equalized.

Note that FIG. 3 shows an embodiment in which the additional work coil 52 is provided on the pressure section 42 side of the pressure means 4. There is no problem in making the oscillation of the high-frequency induced current denser by adjusting or the like.

Regarding the embodiments shown in FIGS. 1 and 2, the applicant conducted the following experiments, and as a result, obtained numerical values different from the experimental results disclosed in the applicant's earlier application.

That is, in the applicant's previous application, the work coil 51 has 5ooo
In this experiment, the work coil 51.52 was energized at 8000 V for 20 to 60 seconds to raise the heating temperature to about 200°C and held at this temperature for 90 to 180 seconds. I made it. As a result, in the applicant's previous application, the peel strength per flat coil wire 11 of the product was 240 Kgf/2 mm, and the slip strength between the armature 1 and the rotor hub 3 was 200 Kgf, whereas the present applicant In the experiment, 340Kgf /2mm, 350K
It was gf. In addition, in this experiment, the product finish accuracy such as flatness was much better, and even if the heating time was shortened to some extent, strength greater than that of the applicant's previous application was obtained.

〔Effect of the invention〕

As described above, the flat coil manufacturing apparatus according to the present invention has the effect of improving adhesive strength and product finishing accuracy because the heating temperature and pressing force for bonding are made uniform. Further, by shortening the heating time, it is possible to reduce heating energy and manufacturing time, which has the effect of improving productivity and reducing costs.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the flat coil manufacturing apparatus according to the present invention, FIG. 2 is a sectional view showing an example of wiring of the high-frequency induction heating means in FIG. 1, and FIG. 3 is a modification of FIG. 1. A sectional view showing an example, FIG. 4 is a sectional view showing an example of the structure of a flat coil,
FIG. 5 is a sectional view showing a conventional example. 1...Amateur, 11...Flat coil wire, 12
...Disc-shaped insulating material, 2... Disc-shaped insulating material,
3... Rotor hub, 4... Pressurizing means, 5... High frequency induction heating means.

Claims (1)

[Claims] A temporarily bonded armature consisting of a disk-shaped insulating material arranged between a large number of flat coil wires is fitted to the rotor hub via the disk-shaped insulating material, and the temporary bonded armature is permanently bonded and the temporarily bonded armature and the rotor hub are bonded. In a flat coil manufacturing apparatus equipped with high-frequency induction heating means and pressurizing means for simultaneously performing A flat coil manufacturing device characterized in that the structure has a buffer structure in which the pressure applied to the rotor hub is attenuated compared to the pressure applied to other parts.