Corrugated pipe water swelling forming device and technology

Abstract

The invention discloses a corrugated pipe water swelling forming device. The corrugated pipe water swelling forming device comprises a water swelling machine and a water swelling die. The water swelling machine comprises a left punch and a right punch. The corrugated pipe water swelling forming device is characterized in that the water swelling die comprises a die frame, a die core, first movableinserts and second movable inserts, the die core is divided into an upper die core body and a lower die core body, and each of the upper die core body and the lower die core body is provided with onesecond movable insert and the multiple first movable inserts; the first movable inserts and the second movable insert on the upper die core body are symmetric to the first movable inserts and the second movable insert on the lower die core body; the corresponding first movable inserts are symmetrically distributed on the two sides of each second movable insert; each of the first movable inserts and the second movable inserts is provided with a male die; two female dies are symmetrically arranged on the two sides of each male die; each first movable insert is further provided with a first protruding part, a second protruding part, a first groove part and a second groove part; and each second movable insert is provided with a third protruding part and a third groove part.

Description

technical field [0001] The invention relates to the field of water-swelling forming, in particular to a water-swelling forming device and a forming process for a bellows. Background technique [0002] There are many ways to form bellows. Among them, water expansion forming has become the main method for mass production of bellows, especially for some bellows with complex structures, which cannot be achieved by traditional forming methods, but Due to the limitation of the raw material, the current water swelling forming device has a limited elongation rate, and structures exceeding the elongation rate of the raw material cannot be formed. Therefore, existing devices and processes are used for some deep bellows structures. can not complete. Contents of the invention [0003] The invention discloses a bellows water expansion forming device and a forming process, which are used to solve the deficiencies in the prior art. [0004] For addressing the above problem, technical s...

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Problems solved by technology

[0002] There are many ways to form bellows. Among them, water expansion forming has become the main method for mass production of bellows, especially for some bellows with complex structures, which cannot be achieved by traditional forming methods, but Due to the limitation of the raw material, the current water swelling forming device has a limited elongation rate, and structures exceeding the elongation rate of the raw material cannot be formed. Therefore, existing devices and processes are used for some deep bellows structures. can not complete

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