Extrusion forming method and device for trimming edges of transformer copper strips

Abstract

The invention discloses a method and a device for trimming edges of transformer copper strips. The device comprises a bottom plate, and a levelling housing, trimming adjustment, a guide rod, a trimming adjusting screw rod, a grinding tool fixing seat and a trimming housing which are assembled on the bottom plate; and a levelling roll and a rear tension platform are positioned at the same horizontal position. The method comprises that: the copper strips out of a longitudinal shearing machine set pass through a front pressing roll and a rear pressing plate for tension adjustment, and the centers and the edges of the copper strips are positioned through up and down and left and right adjustment, so that forming dies are arranged on two sides of the copper strips, and when the edges of the moving copper strips pass through the forming dies, the extrusion forming processing on the edges of the copper strips is realized by means of the high-speed movement of the copper strips; and the requirement that the edges of the copper strips are fillets or round edges is met after the forming processing. The device can be freely adjusted according to the width of the copper strips, and ensures the edge shape is stable and consistent and the surfaces of the strips are not provided with grinding marks; and the method prevents the edges of the copper strips from hogging, waving and tearing, and ensures that the side camber is less than or equal to 2mm / m and the width of the processed copper strips is free.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, and in particular relates to a method and a device for treating the edge of a copper strip for a transformer. Background technique [0002] Transformer winding copper strip not only requires heavy volume, high precision, and good surface quality, but also has special requirements for its conductivity, especially the consistency and the shape and burrs of the edge of the strip. At present, few companies in China can produce it, but its The quantity and quality cannot meet the requirements, and most of the domestic market relies on imports. [0003] Transformers that use copper tape instead of copper wire winding have the characteristics of small size, low loss, high short-circuit strength, good heat dissipation, easy welding and high winding efficiency, and convenient daily maintenance. It is a new technology that emerged in the 1970s abroad. The new product has been widely u...

AI Technical Summary

Problems solved by technology

[0002] Transformer winding copper strip not only requires heavy volume, high precision, and good surface quality, but also has special requirements for its conductivity, especially the consistency and the shape and burrs of the edge of the strip. At present, few companies in China can produce it, but its The quantity and quality cannot meet the requirements, and most of the domestic market relies on imports

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