JPS58135617A - Manufacture of three-phase wound core - Google Patents

Abstract

PURPOSE:To enable to enhance productivity, while to reduce size of the outside wound core of the three-phase wound core by a method wherein after the inside wound core is inserted loosely in the outside wound core, the outside wound core is pressed from the outside to be adhered by pressure to the inside core, gap width is constricted up to the prescribed width, and the outside wound core and the inside wound core are unified. CONSTITUTION:Gap width of the lap part 16 of the outside wound core 12 is spread larger than usual width, the gap is opened larger than the outside circumference of the inside wound core 11, the tightly bound inside wound core 11 is inserted loosely in the opened window thereof, it is pressed from the every sides to constrict gap width of the outside wound core 12 to the prescribed width, and the outside wound core 12 is adhered by pressure to the inside wound core 11 to be unified. Both cores are annealed in this condition, and then bands 14 and core metals 13 are removed to complete manufacture. Because the inside wound core 11 can be closely arranged inside of the outside wound core 11, and moreover because annealing is performed after the cores are assembled into the three-phase wound core, space in an annealing furnace can be reduced, and productivity is enhanced much more.

Description

DETAILED DESCRIPTION OF THE INVENTION An example of a conventional method for manufacturing a three-phase wound core related to the method of manufacturing a three-phase wound core according to the present invention is shown in JlEll. (After cutting the bare copper plate to the specified size for one round, wrap the inner wound core 1 and the outer wound iron core 2 in a circle, press each core 1.2 into a square shape, and then press the core metal 3.4. Hammered and annealed (A in the figure).

B) Do. Thereafter, the two inner wound cores 1 are placed side by side and tied together with a band 5. Next, the core metal 4 of the outer wound core 2 is removed, and the two inner wound cores lt-fitted in this window are fitted. In this case, the window dimensions of the square outer wound core 2 (A+α,
B+α) is pre-wound larger than the outer dimensions (A, B) of the inner-wound core l by the size of the stain, so it fits easily.Finally, wedge 6 is driven into the gap between both wound cores 1 and 2 to integrate them. The manufacturing process ends when the band 5 and core bar 3 are removed. Note that 7.
Reference numeral 8 designates the lamp portions of the inner-wound core 1 and the outer-wound core 2. However, this manufacturing method has the following drawbacks.

(1) Since a total of three cores, the two inner cores 1 and the outer core 2, are annealed separately, a large amount of space is required in the annealing furnace, and productivity is poor due to the use of a wire.

(2) To combine the inner-wound core 1 with the outer-wound core 2,
It is necessary to make the outer winding core 2 larger than 41, which increases the average magnetic path length and space 7, and requires more silicon steel plates. Because it gets hot, you need a large roll and tank.

Therefore, the purpose of this invention is to address the shortcomings of the Hirogamiro, improve productivity, reduce the size of the outer wound core, and provide a method for piercing the 93-phase wound core.To achieve this purpose. As a rounding machine, two pieces were placed side by side in the window of the outer wound core, and nine inner wound cores were fatigued 41
In the method for assembling a 93-phase girder core, the outer wound core is wound so that the inside of the lap part O gap is larger than the specified one, and the window inner periphery of the outer wound iron core is wrapped around the inside 11 of the window.
The outer circumference of the wound iron core is opened wide, and then the inner wound iron core is loosely fitted into the opening window of the outer wound iron core, and then the outer wound iron core is pressurized from the outside and pressed against the inner wound iron core to form the above-mentioned. The method is characterized in that the inside of the gap is brought together to a specified extent, the outer wound core and the inner wound iron core are integrated, and then annealed.

An embodiment of the present invention will now be described with reference to Figure 2 and JIIS11. The inner wound core 11a is cut to the same length as the conventional example (one round), rolled into a circle with a 9jIIfIA copper plate, pressed into a square shape, and the core bar 13 is recessed. Then, the two inner wound iron cores 11 are placed side by side, and a band is formed. 14 (the outer dimensions at that time are aA and B). Next, as for the outer winding core 12 (as in the conventional example), a silicon steel plate cut to a somewhat short specified length is rolled up and pressed into a square shape. 40 are arranged side by side, round inner core 1
The length is approximately equal to the outer dimensions (A, B) of 1. Therefore, if the outer wound core 12 is wound round in the same gap as in the conventional example, the inner wound core 11 will not be able to fit into the opening window of the outer wound core 12. In other words, the outer circumference of the inner wound core 110 is very hot.
It belongs to a large type with the same dust size ff1 (A0a・B+#) as 1 (Fig. 511). Here, FIG. 3) is an enlarged view of the wrap portion of the conventional example, and is an enlarged view of the wrap portion 1 of the Hirokimoto embodiment.

Next, inside the opening window of the outer wound core 12! The outer wound iron core shown in Fig. 513 is also provided with 12 gears in the middle by loosely fitting the round inner wound iron core 11 into the outer wound iron core shown in Fig. 513.
41 - In other words, the outer wound core 1 is attached to the inner wound core 11.
2 are pressure-welded and integrated. ・Annealing both cores in this state 1, and then removing the band 14 and core metal 13 completes the drama. Because of the structure, it was not necessary to cut the inner-wound core to a larger size in advance (by cutting it to a specified size, heat it to K11l in the shape of an opening window, and then reduce it and annealing it). The round that could be placed 111t-drive'&
(Integrated 1! And since it is annealed after forming a three-phase wound core, less space is required in the annealing furnace, and the durability is further improved. In addition, the length of the silicon steel plate of the outer wound iron core can be adjusted to the length of the silicon steel plate of the inner wound iron core. There is no need to make it longer due to the mating of the
Even if the finished product is multi-shaped, it can be made smaller.Volume 5
It can also be made smaller.

[Brief explanation of drawings]

Figures 111 and 112 are three-phase wound core manufacturing process 11.
In the figures, Figure 111 shows a conventional example, and Figure 2 shows an embodiment of the present invention.Figure 111 shows an enlarged view of the lap part of the outer wound core, and Figure (1) shows a conventional example. -) Figure line book actual tl
This is an IIA example before integration. In the figure, 11 is the inner 11-wound core, 12 is the outer-wound core, 13 is the core, 141t band, and 15.16 is the wrap part. Manufactured by Takeshi Takashi Co., Ltd. Publisher: Hiro Ishishiya

Claims (1)

[Claims] In a method for manufacturing a three-phase wound core in which two inner wound cores arranged side by side are inserted into a window of an outer wound core and then integrated, the gap between the lap portions of the outer wound cores is set to be larger than specified. After winding the outer wound core, the inner periphery of the window of the outer wound core is opened larger than the outer periphery of the inner wound core, and then the inner wound core is loosely fitted into the open window of the outer wound core, and then the outer wound core is opened outward. A method for manufacturing a three-phase wound core in which the gap is compressed to a specified level by applying pressure to the inner wound core, the outer wound core and the inner wound core are integrated, and then annealed.