Winding process for foil type coil

A coil and process technology, applied in the field of foil coil winding process, can solve the problems of limited production efficiency, difficult demoulding, complex casting mold structure, etc., achieve enhanced mechanical strength and insulation strength, and solve low manufacturing efficiency and fast The effect of mold loading and demoulding

Active Publication Date: 2017-12-01
奇宏(厦门)电力变压器有限公司
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  • Abstract
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Problems solved by technology

However, the coil manufacturing problem has not been well resolved, especially the casting process, which limits the mass production capacity of resin cast dry-type transformers
The main problems in the manufacture of resin cast dry-type transformer low-voltage coils are: first, the traditional coil is formed by vacuum casting, and the general vacuum casting process takes about 20 hours, and the cumbersome process greatly limits the production efficiency; second, the structure of the casting mold is complex, There is a problem of difficult demoulding

Method used

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  • Winding process for foil type coil
  • Winding process for foil type coil
  • Winding process for foil type coil

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Step S1, provide mould, described mold comprises two semicircular mold cylinders 10 and positioning plate 20, the two ends of two described semicircular mold cylinders 10 are respectively provided with positioning plate 20, and described positioning plate 20 is two described semicircular For the fixed connection of the mold cylinders 10, the two semicircular mold cylinders 10 are arranged facing each other, and a gap 30 is left between the two semicircular mold cylinders 10.

[0028] The mold provided in this step is an inner mold, and an outer mold for encapsulation is not needed, thereby saving mold cost. The two semicircular mold cylinders 10 are fixed by using two semicircular mold cylinders 10 provided with gaps 30 and by positioning plates 20 . When the mold needs to be disassembled, the positioning plate 20 is removed f...

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Abstract

Disclosed is a winding process for a foil type coil. The winding process comprises the steps of S1, providing a mould, wherein the mould comprises two semi-circular mould cylinders and positioning plates, the positioning plates are arranged at the two ends of the two semi-circular mould cylinders respectively, and a gap is formed between the two semi-circular mould cylinders; S2, assembling the mould on a foil winding machine, and performing de-moulding treatment on the surface of the mould; S3, winding a coil; S4, taking off the mould and the wound coil from the foil winding machine to be placed into a drying oven to be heated and cured; and S5, placing the mould and the coil vertically, pouring resin along the end part of the coil, and waiting until the resin is cured. The quickly-detached mould is adopted, so that after the positioning plates of the mould are taken off, the semi-circular mould cylinders can be loosened freely to realize quick assembling and disassembling of the mould; in addition, resin is poured along the end part of the coil, so that the mechanical strength and the insulating strength of the coil are reinforced; and casting moulding of the coil in a vacuum environment is not needed, so that multiple procedures are omitted, thereby greatly improving production efficiency.

Description

technical field [0001] The invention relates to the technical field of transformer coil winding technology, in particular to a winding technology for foil coils. Background technique [0002] Resin cast dry-type transformers are more and more popular in the market because of their excellent energy-saving effect, low noise, excellent electrical strength and mechanical strength. However, the coil manufacturing problem has not been well resolved, especially the casting process, which limits the mass production capacity of resin cast dry-type transformers. The main problems in the manufacture of low-voltage coils for resin cast dry-type transformers are: first, the traditional coils are formed by vacuum casting, and the general vacuum casting process takes about 20 hours, and the cumbersome process greatly limits the production efficiency; second, the structure of the casting mold is complex, There is a problem of difficulty in demoulding. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/061H01F41/098H01F41/12
CPCH01F41/127
Inventor 彭天恩李凌吉苏良彬
Owner 奇宏(厦门)电力变压器有限公司
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