Large-diameter multilayer metallic corrugated pipe forming die and manufacturing method thereof

Abstract

The invention discloses a large-diameter multilayer metallic corrugated pipe forming die and a manufacturing method thereof. The large-diameter multilayer metallic corrugated pipe forming die is characterized in that the mechanical bulging die consists of a pyramid power system, a die section integration system, a die section horizontal supporting system, a die section reset system and a pipe billet guide system. When a pyramid of the cylindrical bulging die moves downwards along the vertical direction, 12 pyramidal faces of the pyramid slide relative to tail slopes of a respective group of horizontally distributed dolabrate die sections, each die section is pushed by horizontal component of the corresponding slope to be radially expanded so as to bulge corrugations on the pipe billet. T-shaped groove sliders, connecting rods and the die sections in the die section integration portion are radially connected to be extended so as to from an upper plane of the die section integration portion, channel steel extension arms and extension plates radially connected with base lower flanges are arranged below the connecting rods to form a lower plane, and the die section integration portion and the die section horizontal supporting portion are formed between the upper plane and the lower plane through vertical single-column supports and double-column supports. The large-diameter multilayer metallic corrugated pipe forming die is capable of forming multilayer metallic corrugated pipes as well as single-layer metallic corrugated pipes.

Description

technical field [0001] The invention relates to the processing technology in the manufacture of metal bellows, in particular to a mechanical bulging mold for large-diameter multi-layer metal bellows and a manufacturing method thereof. Background technique [0002] Metal bellows forming methods mainly include hydroforming, roll forming and mechanical bulging. Small-diameter corrugated pipes generally adopt hydroforming, and large-diameter corrugated pipes generally adopt rolling forming and mechanical bulging. Roll forming usually can only roll single-layer bellows, and mechanical bulging is a more advanced large-diameter bellows forming method developed in recent years, but the diameter of bellows processed by mechanical bulging is generally around 1000mm. When the diameter of the corrugated pipe is several meters, the existing forming technology can only implement the processing of large-diameter single-layer corrugated pipe, and cannot realize the forming of large-diamete...

AI Technical Summary

Problems solved by technology

When the diameter of the corrugated pipe is several meters, the existing forming technology can only implement the processing of large-diameter single-layer corrugated pipe, and cannot realize the forming of large-diameter multi-layer corrugated pipe