Integral core head pipe single-pass continuous drawing device

A single pass and drawing device technology for the core pipe material, which is applied in the direction of wire drawing dies, etc., can solve the problems of high mold manufacturing, management and maintenance costs, low production efficiency and equipment utilization, difficult production of tube blanks, etc., and achieve production Improve efficiency and equipment utilization, improve production efficiency, and reduce the number of molds

Pending Publication Date: 2021-08-31
SHENYANG LIGONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when forming traditional ultra-thin and ultra-fine pipes, extrusion molding or multi-pass forming with small deformation is mostly used. During the deformation process, the pipes will produce work hardening and other phenomena, which are prone to problems such as instability and broken pipes. And each drawing can only be

Method used

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  • Integral core head pipe single-pass continuous drawing device

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Embodiment Construction

[0016] As shown in the accompanying drawings, this embodiment includes an outer mold 1, which is characterized in that the central axis of the outer mold 1 is provided with a tapered hole 2, the tapered hole 2 includes a first forming section 7 and a second forming section 8, the second The transition between the first forming section 7 and the second forming section 8 is made through the inner curved surface of the tapered hole. The first forming section 7 realizes the first diameter-reducing and wall-reducing deformation of the pipe material 3, and the second forming section 8 realizes the second diameter-reducing and wall-reducing deformation of the pipe material 3, realizing continuous deformation after one drawing.

[0017] The pipe material 3 is arranged in the tapered hole. Since the pipe material 3 with an outer diameter of more than 8mm and a wall thickness of more than 1mm is drawn, the weight of the floating core 4 is relatively large, and it is not easy to balance d...

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Abstract

The invention discloses an integral core head pipe single-pass continuous drawing device, and belongs to the technical field of pipe drawing forming. The integral core head pipe single-pass continuous drawing device can realize continuous multi-time deformation of a pipe in one drawing pass, is particularly suitable for drawing forming of an ultra-long, ultra-thin and ultra-thin pipe, improves the forming efficiency and the yield of the pipe, is simple in mold structure, and is good in drawing pipe quality. The integral core head pipe single-pass continuous drawing device comprises an outer die, and is characterized in that a conical hole is axially formed in the center of the outer die, the pipe is arranged in the conical hole, a moving core head is arranged in the pipe and matched with the conical hole, at least one heating groove is formed in one end of the outer die, and an electric heating rod is inserted into each heating groove in a matched manner.

Description

technical field [0001] The invention belongs to the technical field of pipe drawing and forming, and in particular relates to an integral core pipe single-pass continuous drawing device. Background technique [0002] Pipe drawing refers to the processing method of forcing the pipe to pass through the die hole to produce plastic deformation under the action of external tension to obtain a product with the same shape and size as the die hole. Among them, continuous drawing is a common processing method for pipe drawing . [0003] However, when forming traditional ultra-thin and ultra-fine pipes, extrusion molding or multi-pass forming with small deformation is mostly used. During the deformation process, the pipes will produce work hardening and other phenomena, which are prone to problems such as instability and broken pipes. And each drawing can only be formed once, and the single-pass drawing method has a small amount of deformation, and it is difficult to produce qualifie...

Claims

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Application Information

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IPC IPC(8): B21C1/24B21C3/02
CPCB21C1/24B21C3/02
Inventor 岳峰丽李旺刘劲松
Owner SHENYANG LIGONG UNIV
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