Die for winding back-shaped transformer wound core

Abstract

The invention relates to a mold for winding concentric-square-shaped transformer reel iron cores. The mold comprises two gear molds and at least two arc-shaped plates, wherein each gear mold is formed by overlapping of a gear ring, a connection ring, a rail ring and a fixed semi-ring which are coaxially arranged in sequence; each gear ring is formed by splicing two gear semi-rings, each connection ring is formed by splicing two connection semi-rings, and each rail ring is formed by splicing two rail semi-rings; the rail rings are positioned in the inner holes of the connection rings, and are connected with the connection rings in a sliding way; fixing bolts passing through the fixed semi-rings along the radial direction are arranged at the two ends of the fixed semi-rings respectively; annular enclosures are arranged around the inner holes of the gear rings; and the two ends of all the arc-shaped plates are placed on the two annular enclosures respectively, enclosed into a cylindrical structure, and fixed by winding with adhesive tapes. Compared with the prior part, the mold has the advantages that the concentric-square-shaped transformer reel iron cores can be wound conveniently and rapidly; each component can be produced easily; and the mold can be arranged and detached easily, and is low in manufacturing cost and suitable for mass production of the concentric-square-shaped transformer reel iron cores.

Description

technical field [0001] The invention relates to the field of rolled iron core moulds, in particular to a mold for winding back-shaped transformer wound iron cores. Background technique [0002] In the transformer, the most used iron core is the E-type iron core. Its advantage is that it has a high window space factor, can form a protective shell for the winding, and the primary and secondary of the winding can share a skeleton, but it is It has the disadvantages of large heat dissipation area, less magnetic field divergence, large leakage inductance and large external magnetic field interference, and the use of zigzag iron cores in transformers will save more energy. Compared with E-shaped iron cores, external magnetic field interference is small and magnetic field divergence is more , the conversion efficiency is high, but because the zigzag iron core has no openings, the coiled iron core molds currently on the market are only suitable for mass production of coiled iron cor...

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Problems solved by technology

[0002] In the transformer, the most used iron core is the E-type iron core. Its advantage is that it has a high window space factor, can form a protective shell for the winding, and the primary and secondary of the winding can share a skeleton, but it is It has the disadvantages of large heat dissipation area, less magnetic field divergence, large leakage inductance and large external magnetic field interference, and the use of zigzag iron cores in transformers will save more energy. Compared with E-shaped iron cores, external magnetic field interference is small and magnetic field divergence is more , the conversion efficiency is high, but because the zigzag iron core has no openings, the coiled iron core molds currently on the market are only suitable for mass production of coiled iron cores with openings, and there is a lack of molds suitable for winding zigzag transformer coiled iron cores. The zigzag wound iron core is not suitable for mass production, so it cannot be widely used in the field of transformer production

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