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

A technology for multi-layer metal and corrugated pipes, applied in the field of large-diameter multi-layer metal corrugated pipe mechanical bulging molds and its manufacturing field, can solve the problems that large-diameter multi-layer corrugated pipes cannot be formed, and achieve reduced labor intensity and simple operation , the effect of high production efficiency

Active Publication Date: 2015-05-20
沈阳汇博热能设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment Construction

[0007] The large-diameter multi-layer metal bellows forming die of the present invention applies the technical method of mechanical bulging. The basic principle of mechanical bulging of circular bellows is that there is a positive pyramid for forming on the center line of the cylindrical expansion mold. When it moves downward from the large end to the small end in the vertical direction, the cone of the pyramid Surface and the rear slope of a group of fan-shaped mold parts that are horizontally distributed slide relative to each other, so each mold part is pushed by the horizontal component force of the slope, and expands radially outward, and the mold part is pushed against the tube blank that is set outside the mold. It swells and ripples. The mechanical bulging mold is mainly composed of five parts: pyramid power system, mold flap integration system, mold flap horizontal support system, mold flap reset system and tube blank guiding system.

[0008] The following is the man...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D15/04
Inventor 丁艳萍杨彬如刘满刘勇王雪
Owner 沈阳汇博热能设备有限公司
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