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Die-pressing processing method for bar coils of motor

A strip coil, molded processing technology, applied in the direction of laying solid insulation, etc., can solve the problems of affecting the appearance quality and insulation quality, insulation breakdown to the ground, and poor size guarantee, so as to shorten the production cycle, enhance the insulation strength, Effect of reducing volume and weight

Inactive Publication Date: 2009-12-16
TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the molding process of the coil, it is easy to have a ground insulation breakdown phenomenon, and 95% of the breakdown points occur at the corner of the straight line, and the cross-sectional size of the produced coil at the corner R of the line increases, and the edge is corrugated after the ground is pressed. Angle, affecting the appearance quality and insulation quality, the size is not guaranteed
Coil scrap rate is high, resulting in waste of raw materials

Method used

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  • Die-pressing processing method for bar coils of motor

Examples

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Embodiment 1

[0033] A molding process method for strip coils of electric motors. The coils are transposed from the strip coil straight to the end 2 / 3, and the lead wires are sealed and welded. processing and molding process,

[0034] 1) Wrap the main insulation

[0035] a Place the upper and lower layer strip coils on the coil support of the wrapping machine respectively;

[0036] b. Adjust the geometric shape and size of the end of the wrapping machine, and install the required end lifting pads at the end of the wrapping machine to avoid distortion and deformation of the geometric rising angle of the end when the main insulation is wrapped;

[0037] c Carry out the main insulation wrapping according to the compression amount given by the process; when wrapping the main insulation, adjust the running speed of the taping machine at the R corner of the wrapping end to ensure that 1 / 2 half of the mica tape is wound flat and evenly, avoiding inner corners Thickened, the half-stacked winding ...

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Abstract

The invention relates to a die-pressing processing method for bar coils of a motor, and belongs to the technical field of motor coils. The die-pressing processing method for the bar coils of the motor is characterized in that transposition is carried out from the straight line of the bar coils to two thirds of the end, and a lead wire welds the finished coils. The method comprises the following processes: 1) binding a main insulator: a, placing upper and lower bar coils on a coil bracket of a binding machine respectively; b, adjusting the geometrical size of the end of the binding machine, and arranging a required end elevating cushion block at the end of the binding machine; and c, binding the main insulator according to the compression amount given by the process; 2) treating an anti-halation structure; and 3) die-pressing processing and molding, namely flatly wrapping a layer of polytetrafluoroethylene film strip on the upper and lower bar coils, putting the bar coils into a bar coil die-pressing die respectively, providing current from the lead wire of the coils by adopting a pressurizing mode of a hydraulic cylinder, and performing die-pressing processing and molding on the coils from the interior to the surface by adopting a curing mode and a heating method. The method has the advantages of simple process, high insulating strength, reduced breakdown rate, long service life, high production efficiency, attractive appearance, and the like.

Description

technical field [0001] The invention belongs to the technical field of motor coils, and in particular relates to a method for molding a motor strip coil. Background technique [0002] At present, the design structure of the strip-shaped coil of the hydro-generator is: the pitch is short, and the straight line is no longer than 2 / 3 of the break, so as to reduce the main size of the motor and reduce the manufacturing cost of the motor; brought great difficulty. In the production of coils in the molding process, it is easy to have insulation breakdown to the ground, and 95% of the breakdown points occur at the corners of the straight line, and the cross-sectional size of the coil at the corner R of the straight line increases, and the edge is corrugated after pressing to the ground Angle, affecting the appearance quality and insulation quality, the size is not guaranteed. The coil scrap rate is high, resulting in waste of raw materials. Contents of the invention [0003] I...

Claims

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Application Information

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IPC IPC(8): H02K15/10
Inventor 路春玲张俊新
Owner TIANJIN TIRNFR HEAVY HYDROELECTRIC FRCILITY CO LTD
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