Rounding and sizing processing mould for pipe fittings

Abstract

The invention relates to a rounding and sizing processing mould for pipe fittings. The rounding and sizing processing mould comprises a cap, an expanding core, mould pieces, a cover plate, a mould base and an expanding core base, wherein a ring-shaped cavity is arranged on the top of the mould base; a mounting slot is formed in the bottom of the mould base; through holes are formed inside the cap and the expanding core; a drawbar is arranged in the through holes; an oil injecting hole is formed in the top of the drawbar; a regulating gasket is arranged in front of the expanding core base and the expanding core; edges of cross sections of the plurality of mould pieces are arc-shaped, and are on the same circle D; a first elastic ring is arranged between the outer walls of the mould pieces and the mould base; the inner walls of the mould pieces are in clearance fit with conical surfaces of the expanding core; second limiting slots are formed in the inner walls of the mould pieces; limiting slide blocks are arranged between the second limiting slots and first limiting slots; and second elastic rings are arranged in grooves of the plurality of the mould pieces. The rounding and sizing processing mould is precise in structure, is reasonable in design, is convenient to dismount and maintain, can be used for simultaneously carrying out sizing, rounding and processing on pipe fittings, is stable in sizing, rounding and processing quality, is convenient and quick in oil injecting and lubricating, and is beneficial for improving processing efficiency and prolonging the service life of the mould.

Description

technical field [0001] The invention relates to a processing mold for full-circle sizing of pipe fittings, which belongs to the technical field of auto parts processing. Background technique [0002] With the rapid development of my country's automobile industry and engineering construction technology, the market has higher and higher requirements for the quality of pipe fittings, thus promoting the rapid development of pipe fittings processing molds. Traditional pipe fitting sizing molds usually can only perform simple expansion and sizing. Since the expansion core of the expansion mold is a multi-lobe structure, the products after expansion have poor roundness and dimensional accuracy, which affects product quality. It is difficult to accurately guarantee the outer diameter of the pipe fittings. At the same time, it is inconvenient to lubricate the machine, and it is easy to cause the matching movement to be stuck, thereby affecting the processing efficiency and the servic...

AI Technical Summary

Problems solved by technology

Traditional pipe fitting sizing molds usually can only perform simple expansion and sizing. Since the expansion core of the expansion mold is a multi-lobe structure, the products after expansion have poor roundness and dimensional accuracy, which affects product quality. ...

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