JPS607901B2 - Winding core processing method for flat motors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for processing a wound core, in which a steel strip is wound around a core at a different pitch for each winding, while punching out slots.

The conventional production of this type of rolled iron 'D will be explained with reference to FIGS. 1 to 4. First, at the beginning of winding, a steel strip 1 is punched out using a punching blade 2 to form a yoke portion 3. A bent part 4 is formed at the tip of this yoke part 3, and after this bent part 4 is inserted and fixed into a groove 6 provided in a winding core 5, the steel strip is
While feeding the core, punch out a slot with the punching blade 2, wind it up with the winding core 5 to make a wound core as shown in Fig. 3, and then cut or stretch the bent part 4 at the tip of the yoke part 3. As a result, a completed wound core as shown in Figure 4 was obtained.

As described above, in the production of conventional wound cores, the bent part 4 formed at the tip of the yoke part 3 must be cut or stretched after the steel strip 1 is wound, so the number of man-hours required for cutting or stretching is increased. In addition, there were disadvantages in terms of quality, such as a poor lamination state.

The present invention has been made in view of the above-mentioned conventional drawbacks, and one embodiment of the present invention will be described below with reference to FIGS. 5 to 8.

Fig. 5 shows the structure of the iron ``○'' produced by the processing method of the present invention.
2, a yoke part 13, and a hole 14 for hanging a steel strip is provided at the tip of the yoke part 13. FIG. 6 shows the processing equipment; 15 is the punching blade of the punching device for punching the steel strip 16; 17 is the steel strip feeding device linked to the punching device; 18
7 is a winding core for winding up the steel plate 16 punched by the punching blade 15, and as shown in FIG. 7, a pin 19 that engages with the steel strip hooking hole 14 is retractably provided.

Next, to explain the manufacturing process of the wound core, similar to the conventional working method, at the beginning of winding, the steel strip 16 is punched out in advance, leaving only the yoke portion 13. Since the hook hole 14 is provided, the steel strip hook hole 14 can be hooked onto the pin 19 of the winding core 18.
While being fed by the steel 5-band feeding device 15 in the same manner as in the prior art, the material is punched and wound up by the punching blade 15 to obtain a wound core as shown in FIG.

In this case, since there is no new curved part as in the conventional case, the wound core is completed in this state. Note that the winding core 18 is provided with a pin 19, and a steel strip hooking hole 1 provided at the tip of the yoke portion 13 is provided.
4, the core must be removed from the winding core 18 after the engagement is disengaged.

For this reason, the pin 19 is provided in the winding core 18 so as to be freely retractable. That is, as shown in FIG. 8, the pin 19 is housed in a recess 20 provided in the winding core 18, and normally projects from the surface of the winding core 18 due to the biasing force of the spring 21. and,
When embedding the pin 19 in the winding core 18, the presser bar 22 is inserted through the carrying hole 21 that passes through the two recesses, and the pin 19 is provided with a tapered portion 22a formed at the tip of the presser bar 22. The configuration is such that the pin 19 is positioned in the recess 20 against the biasing force of the spring 21 by the action of the taper portion 22a with the help of the contact portion 23. This prevents the pin 19 from getting in the way when the winding core is removed from the winding core 18. In the above embodiment, the pin 19 is structured to engage with the hole, but as shown in FIG. 9, the same effect can be achieved even if the yoke portion 13 is provided with a notch 14 in which the pin 19 engages. I can do it.

Further, a plurality of steel strip hooking holes 14 or notches 14' may be provided. As is clear from the above description, according to the present invention, by providing a steel strip hooking hole or notch in the steel strip yoke at the beginning of winding, the steel strip can be hooked onto the core and wound using this hole or notch. This eliminates the need to cut or stretch the tip at the beginning of winding, which is required with conventional wound cores, improving workability and maintaining quality stability.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional wound core processing device, Figure 2 is a perspective view of the core in the same device, Figure 3 is a perspective view of the core removed from the core, and Figure 4 is the completed core. Perspective view of 5th
The figure is a perspective view of a completed wound core manufactured by the processing method of the present invention, FIG. 6 is a perspective view showing the same processing device, FIG. 7 is a perspective view of the winding core in the same device, and FIG. 8 is the same winding core. FIG. 9 is a front view of a yoke portion of a steel strip according to another embodiment of the present invention. 13...Yoke part, 14...Hole for hanging steel strip,
14'...Notch for hanging steel strip, 16...
Steel strip, 18... core, 19... pin. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1. In a method for processing a wound core for a flat electric motor, in which a steel strip is wound around a winding core while punching slots at different pitches for each winding to form a wound core having a predetermined number of slots,
A steel strip hooking hole or notch is provided in the steel strip yoke portion located at the beginning of the winding of the steel plate, while a pin that engages with the hooking hole or notch is provided in the winding core so as to be freely retractable. The hooking hole or notch is engaged with this pin, and a predetermined number of steel strips are wound around the winding core.Then, the pin is buried in the winding core and the wound iron core is taken out from the winding core. A winding core processing method for a flat type electric motor.