Integral core head pipe single-pass continuous drawing device

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...

AI Technical Summary

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 formed once, and the single-pass drawing method has a small amount of deformation, and it is difficult to produce qualified tube blanks through one process. The production efficiency and equipment utilization rate are low, and the manufacturing of multiple sets of molds is difficult. , management and maintenance costs are relatively large

Images