Rolling bulging device for metal round pipe

Abstract

The invention discloses a rolling bulging device for a metal round pipe. The device comprises a base, a rolling bulging mechanism, a driving feeding mechanism and a positioning clamping mechanism. Therolling bulging mechanism is mounted on the driving feeding mechanism, then the driving feeding mechanism and the positioning clamping mechanism are mounted on the base, and then a pipe is horizontally mounted on the positioning clamping mechanism. For operation of the rolling bulging mechanism, firstly, the rolling bulging mechanism is moved to the position needing to be rolled and bulged of thepipe by the driving feeding mechanism, then a bulging ring is enabled to start to rotate, then an opening rod is moved to a designated position by the driving feeding mechanism, and then is slowly fed to slowly open a rolling wheel mechanism in the bulging ring, so that the purpose of rolling bulging is achieved. A bulging wheel of the rolling wheel mechanism can be selected in an optimized way according to a bulging ripple shape, so that different ripple requirements are met, and meanwhile, the ripple height can also select different elliptical surface shapes of opening rods to meet the requirements of different heights.

Description

technical field [0001] The invention relates to a rolling and bulging mechanism for pipe fittings, in particular to a metal round tube rolling and bulging device. Background technique [0002] As an elastic element, metal bellows are mainly used in the manufacture of compensators, flexible connectors, heat exchangers, etc., and are widely used in aerospace, power instruments, petrochemical, automotive and ship industries. At present, the bulging of thin-walled tubes is mainly based on hydraulic bulging, but the corrugated shape of the hydroforming has certain limitations, and it is difficult to form a shape with a higher height, and the hydraulic bulging process is more complicated, which affects the quality of the bellows hydraulic bulging There are many factors, if the condition control is unreasonable, it will seriously affect the forming quality of the bellows, and may cause the failure of the bellows, such as cracking, buckling, wrinkling defects, etc. The method of me...

AI Technical Summary

Problems solved by technology

At present, the bulging of thin-walled tubes is mainly based on hydraulic bulging, but the corrugated shape of the hydroforming has certain limitations, and it is difficult to form a shape with a higher height, and the hydraulic bulging process is more complicated, which affects the quality of the bellows hydraulic bulging There are many factors, if the condition control is unreasonable, it will seriously affect the forming quality of the bellows, and may cause the failure of the bellows, such as cracking, buckling, wrinkling defects, etc.

The method of mechanical bulging can improve such problems to a certain extent, but some existing mechanical bulging structures are more complex and less efficient

Images