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Single-pass double-core-head pipe drawing device

A pipe drawing and core head technology, which is applied in the direction of wire drawing dies, can solve the problems of small deformation of pipes in a single pass, low utilization rate of equipment, and uneconomical production efficiency.

Pending Publication Date: 2021-09-14
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional continuous drawing of pipes mostly adopts multi-pass forming, and each single pass only has one core head and one outer mold. The deformation of the pipe in a single pass is small, the utilization rate of equipment is low, and the production efficiency is not economical.

Method used

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Embodiment Construction

[0017] As shown in the accompanying drawings, this embodiment includes a mold cover 1 and a pressure plate 2. A through hole is provided in the center of the mold cover 1. A stepped groove is arranged inside the mold cover 1. The through hole communicates with the stepped groove. The mold 3 and the large-diameter external mold 4, the large-diameter external mold 4 realizes the first diameter-reducing and wall-reducing deformation of the pipe 6, and the small-diameter external mold 3 realizes the second diameter-reducing and wall-reducing deformation of the pipe 6. Under the action of friction force and deformation force when the pipe material 6 is drawn, the small-diameter outer mold realizes bonding with the inner wall of the mold sleeve end. The large-diameter outer mold 4 realizes bonding with the middle step surface of the stepped groove of the mold casing under the action of friction force and deformation force when the pipe material 6 is drawn.

[0018] There is a gap 5 ...

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Abstract

The invention discloses a single-pass double-core-head pipe drawing device, belongs to the technical field of pipe drawing forming, and aims to realize continuous deformation of a pipe in one pass, improve the production efficiency and the equipment utilization rate, reduce the labor intensity, and is wide in application range and high in practicability. The single-pass double-core-head pipe drawing device comprises a die sleeve and a pressing plate. The single-pass double-core-head pipe drawing device is characterized in that a through hole is formed in the center of the die sleeve; a stepped groove is formed in the die sleeve; the through hole is communicated with the stepped groove; a small-diameter outer die and a large-diameter outer die are correspondingly arranged in the stepped groove; a gap is reserved between the corresponding faces of the small-diameter outer die and the large-diameter outer die; the small-diameter outer die and the large-diameter outer die are provided with coaxial pipe holes at the same time; a pipe is arranged in the pipe hole; a small-diameter moving core head and a large-diameter moving core head are arranged in the pipe; the small-diameter moving core head corresponds to the small-diameter outer die; the large-diameter moving core head corresponds to the large-diameter outer die; and the pressing plate is detachably connected to one end of the die sleeve through a screw.

Description

technical field [0001] The invention belongs to the technical field of pipe drawing and forming, and in particular relates to a single-pass double-core head pipe 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, so as 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] The traditional continuous drawing of pipes mostly adopts multi-pass forming, and each single pass only has one core head and one outer mold. The deformation of the pipe in a single pass is small, the utilization rate of equipment is low, and the production efficiency is not economical. Contents of the invention [0004] The present invention aims at the above problems, makes up for the deficiencies of the prior art, and provides a single-pass double...

Claims

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Application Information

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IPC IPC(8): B21C3/02B21C3/14B21C9/00
CPCB21C3/02B21C3/14B21C9/00
Inventor 刘劲松李旺岳峰丽
Owner SHENYANG LIGONG UNIV
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