Production process of folding iron core for dry-type transformer

Abstract

The invention belongs to the technical field of transformers, and particularly discloses a production process of a folding iron core for a dry-type transformer, which comprises the following steps of:(1) cutting: cutting a silicon steel strip into a plurality of silicon steel sheets with different lengths; (2) processing an outer frame: folding the silicon steel sheet in the step (1) into the outer frame, wherein the outer frame is U-shaped; (3) processing auxiliary frames: folding the silicon steel sheets in the step (1) into two auxiliary frames, wherein the two auxiliary frames are U-shaped; (4) machining an upper iron yoke: folding the silicon steel sheet in the step (1) into the upper iron yoke; (5) combining an outer frame: combining the outer frame in the step (2) and the two auxiliary frames in the step (3) into an outer frame; the outer frame is shaped like a Chinese character 'shan' and comprises three iron columns; (6) processing coils: respectively sleeving the three coilson the three iron columns of the outer frame; and (7) splicing: connecting the upper yoke in the step (4) with the upper part of the outer frame in the step (6) to form the roll iron core. The process steps are simple, and the cost is reduced.

Description

technical field [0001] The application of the present invention relates to the technical field of transformers, in particular to a production process of a folded iron core for dry-type transformers. Background technique [0002] The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the iron core. The main functions of the transformer include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. Transformers can be divided into dry-type transformers and oil-immersed transformers. Dry-type transformers are widely used in local lighting, high-rise buildings, airports, and wharf CNC machinery and equipment places. Simply put, dry-type transformers refer to transformers whose iron core and windings are not immersed in insulating oil. [0003] In recent years, with the improvement of technology and performance require...

AI Technical Summary

Problems solved by technology

[0003] In recent years, with the improvement of technology and performance requirements of transformer products, the traditional oblique seam core stacking process can no longer meet the demand

The traditional iron core stacking method is the standard oblique seam method. This method is to cut the silicon steel strip that has been cut longitudinally into a certain width, and cut it into a certain shape and size of silicon steel sheet, and then stack the silicon steel sheet to form Transformer iron core, the stacking plane of this stacking method is the plane composed of yoke pieces and column pieces as the stacking surface. After the coil is loaded, the iron yokes are inserted back one by one according to the original position. The process is complicated and not easy to manufacture. , reduce production efficiency, and poor performance

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