Plunger self-locking metal corrugated pipe multi-corrugate water expansion once-forming machine

Abstract

The invention discloses a plunger self-locking metal corrugated pipe multi-corrugate water expansion once-forming machine. A forming mould is locked in a manner of pushing a pin by a locking mould cylinder. A large mould locking force is realized. In manufacturing a relatively long large-size corrugated pipe, the mould locking force can be enlarged through prolonging the length of the forming mould. No enough mould locking capability of the mould is prevented. Machining of the large corrugated pipe with relatively a large number of corrugates and a relatively high wall thickness can be finished in one step. High operation efficiency and high quality of finished product are realized. According to the plunger self-locking metal corrugated pipe multi-corrugate water expansion once-forming machine, the forming mould with an inner mould and an outer mould is adopted. In a certain range, through adjusting different moulds of different standards, the plunger self-locking metal corrugated pipe multi-corrugate water expansion once-forming machine can be adapted with manufacture of the corrugated pipes with different standards and different diameters. Specialized casting of a new forming outer mould is not required. Not only is production efficiency improved, but also the production cost is greatly reduced.

Description

technical field [0001] The invention relates to the production technology of metal bellows, in particular to a plunger self-locking metal bellows multi-wave water-swelling primary molding machine. Background technique [0002] Bellows mainly include metal bellows, corrugated expansion joints, corrugated heat exchange tubes, molded boxes and metal hoses. Metal bellows are mainly used to compensate pipeline thermal deformation, shock absorption, absorb pipeline settlement deformation, etc., and are widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other industries. Bellows made of plastic and other materials play an irreplaceable role in the fields of medium transportation, power threading, machine tools, and home appliances. [0003] At present, the manufacture of metal bellows mainly adopts the water expansion method: the pipe profile to be processed is placed in the bellows forming mold, and then water is injected in...

AI Technical Summary

Problems solved by technology

In the prior art, the mold is mainly clamped by a hydraulic press or clamped by a concave block. The mold clamping force is not large, generally less than 200T. It is acceptable to produce small metal bellows, but it is used to produce For large and complex metal bellows, limited by its clamping ability, single-wave forming machines are generally used for processing, and it is impossible to process large-scale bellows with a large number of waves and thick walls at one time. The work efficiency is low and the quality of the finished product is poor.

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