Bending composite die structure of stainless steel narrow-band welding part

Abstract

The invention relates to the field of dies, and particularly discloses a bending composite die structure of a stainless steel narrow-band welding part, which comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die frame, a nitrogen spring, a primary forming part and a secondary forming part, the nitrogen spring is connected between the upper die frame and an upper die seat of a punching machine, the primary forming piece is formed by splicing a plurality of primary forming plates, an annular primary forming inclined face is arranged at the bottom of the primary forming piece, the lower die assembly comprises a lower die frame, a containing groove, an outer clamping piece and an inner clamping piece, the containing groove is formed by an annular area between the outer clamping piece and the inner clamping piece, the outer clamping piece is formed by splicing a plurality of outer clamping blocks, the inner clamping piece is formed by splicing a plurality of inner clamping blocks, the inner side face of the outer clamping piece is matched with the outer side face of the stainless steel narrow-band welding piece in shape, and the outer side face of the inner clamping piece is matched with the inner side face of the stainless steel narrow-band welding piece in shape. By the adoption of the sealing ring pressing device, sealing ring pressing can be achieved in the primary punching process.

Description

technical field [0001] The invention belongs to the field of moulds, and in particular relates to a bending compound mold structure of a stainless steel narrow strip welded part. Background technique [0002] The sealing ring of the steel case of the gas meter is a narrow stainless steel strip that is welded at the end and then stamped by a punching machine. Its general shape is a rectangular circle. In the prior art, the profile of the sealing ring needs to go through two stamping processes. The first stamping presses the top of the sealing ring into an inwardly bent slope, and the second stamping flattens the slope. The process is relatively cumbersome, and two punching machines are required to realize the two stampings of the sealing ring, and the cost is relatively high. Contents of the invention [0003] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a bending compound mold structure of a stainless steel narrow-band welded...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a bending compound mold structure of a stainless steel narrow-band welded part to solve the problem that the sealing ring pressing process in the prior art requires two stamping processes, which leads to a cumbersome sealing ring pressing process and high cost. question

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