Compression molding method of motor frame coils

A frame-shaped coil, molded processing technology, applied in the direction of laying solid insulation, etc., can solve the problems of high breakdown rate of coils to the ground, affecting the quality of coil insulation, waste of raw materials, etc., to reduce the breakdown rate to the ground and reduce the production space , the effect of saving copper wire

Inactive Publication Date: 2011-05-11
TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the frame-shaped coil designed by the existing tubular flow unit has a large number of coils, a small span, short ends, and thin coil insulation, which increases the amount of compression and brings great difficulties to the coil manufacturing process. During the processing process, the molded coil will have a high breakdown rate to the ground, which will affect the insulation quality of the coil and cause a lot of waste of raw materials

Method used

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  • Compression molding method of motor frame coils
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Examples

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Embodiment 1

[0032] A method for molding a frame-shaped coil of a motor. The coil after the inter-turn insulation is pressed, and the molding process for the main insulation, the frame-shaped coil molding process includes:

[0033] 1. Insulate the nose and lead wire once

[0034] Carry out in accordance with the requirements of the motor insulation code, and the outer 1 / 2 of the nose insulation of the lead wire is wrapped with a layer of polyester film as the insulation protection of the nose when the machine is wrapped.

[0035] 2. Main insulation wrapping process

[0036] Put the coil on the wrapping machine, and clamp the noses at both ends with pneumatic clamps. The speed of the wrapping machine and the speed of the car should ensure that the mica tape is 1 / 2 half folded and evenly laid, and each layer is staggered and wrapped tightly. According to the process requirements, the compression size is guaranteed to ensure the quality and number of layers of the wrapping. In particular, t...

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PUM

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Abstract

The invention relates to a compression molding method of motor frame coils, belonging to the technical field of motor coils. The method is as follows: main earth insulation compression molding is carried out on the coils undergoing turn-to-turn insulation after compression. The method comprises the following processing steps: 1) primary nose enveloping and lead insulation: enveloping the 1 / 2 partout of the lead nose insulation by a layer of polyester film; 2) main insulation enveloping: on an enveloping machine, clamping the noses at both ends by an air clamp and winding the noses by half with 1 / 2 of a mica tape; 3) secondary nose enveloping and lead insulation: removing the polyester film protective tape on the lead nose and carrying out secondary nose enveloping and lead insulation; 4)anti-corona structure treatment; 5) upper end splinting: flat enveloping a layer of polytetrafluoroethylene tape outside, using an iron splint to go along with the noses at the ends and to cling to the coil nose end, flattening the iron splint and fixing the iron splint by an adhesive tape; 6) earth insulation cure molding: preheating the coils for 30-40min and then carrying out compression molding. The method is simple in process, avoids coil earth breakdown and effectively improves insulated electrical properties.

Description

technical field [0001] The invention belongs to the technical field of motor coils, and in particular relates to a method for molding a frame-shaped coil of a motor. Background technique [0002] At present, the frame-shaped coil designed by the existing tubular flow unit has a large number of coils, a small span, short ends, and thin coil insulation, which increases the amount of compression and brings great difficulties to the coil manufacturing process. In the processing process, the coil after molding will have a high breakdown rate to the ground, which will affect the insulation quality of the coil and cause a lot of waste of raw materials. Contents of the invention [0003] In order to solve the technical problems in the known technology, the present invention provides a molding method for motor frame-shaped coils. [0004] The purpose of the present invention is to provide a motor frame-shaped coil molding method with simple process, which can avoid the breakdown p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/10
Inventor 路春玲
Owner TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD
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