Necking-down tool for steel pipe

A shrinking and steel pipe technology, applied in the field of steel pipe shrinking tooling, can solve the problems of low processing efficiency, high cost, complicated process, etc., and achieve the effect of good forming effect and high processing efficiency

Inactive Publication Date: 2015-12-23
ZHANGJIAGANG BONDED ZONE YAXIN PRECISION PIPE MAKING
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following shortcomings: 1. This method uses two sets of shrinking dies, and the cost is relatively high; 2. This method is twice shrinking, the process is complicated, and the processing efficiency is relat

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Necking-down tool for steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] like figure 1 As shown, a steel pipe necking tooling includes an upper die assembly and a lower die assembly;

[0016] The lower die assembly includes a bottom plate 1, two vertical plates 2 are oppositely arranged on the bottom plate 1, a lower mounting seat 3 is arranged between the two vertical plates 2 on the bottom plate 1, and two lower constricting openings are arranged on the lower mounting seat 3 Device 4, the bottom plate 1 is provided with a material withdrawal hole below the two lower constriction devices 4, and a material withdrawal block 5 is movably arranged in the material withdrawal hole. 3 is provided with two jacking holes for the jacking rod 6 to pass through;

[0017] The lower necking device 4 includes a lower die base 401 arranged on the lower mounting base 3, the lower die base 401 is provided with a stepped thro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a necking-down tool for a steel pipe. The necking-down tool comprises an upper die assembly and a lower die assembly. The lower die assembly comprises a bottom plate, two vertical plates are arranged on the bottom plate, and a lower mounting base is arranged on the bottom plate; two lower necking-down devices are arranged on the lower mounting base, and the bottom plate is provided with a material returning hole located below the two lower necking-down devices; a material returning block is movably arranged in the material returning hole and provided with two jacking rods, and two jacking holes for the jacking rods to penetrate through are formed in the lower mounting base. Each lower necking-down device comprises a lower die holder arranged on the lower mounting base. A stepped through hole is formed in each lower die holder. A positioning base is arranged at the step position of the through hole in each lower die holder. A through hole for a material returning pipe to penetrate through is formed in each positioning base. Each positioning base is provided with a spacer bush. Each spacer bush is provided with a necking-down die. Each necking-down die is provided with a guide sleeve. Each lower die holder is provided with a pressing cover for pressing the corresponding necking-down die and the corresponding guide sleeve. The upper die assembly comprises a top plate. Two upper mounting blocks are arranged on the lower surface of the top plate. Steel-pipe pressing heads are arranged on the upper mounting blocks. The tool is good in forming effect and high in machining efficiency.

Description

technical field [0001] The invention relates to a steel pipe necking tool. Background technique [0002] The ends of steel pipes often need to be necked to meet different application requirements. In particular, the secondary necking of the end of the steel pipe, the steel pipe forming of this secondary necking is currently realized by two sets of shrinking molds, that is, the end of the steel pipe is first necked on the shrinking mold, and then the The part that has been shrunk is then shrunk again on another small shrinking die. This method has the following shortcomings: 1. This method uses two sets of shrinking dies, and the cost is relatively high; 2. This method has secondary shrinking, complicated process and low processing efficiency; 3. The second shrinking is in The first shrinkage will be shrunk again on the part that has been shrunk for the first time. During the actual operation, the surface blindness of the first shrinkage will be damaged, thereby reducing th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B21D41/04B21D37/10B21D37/00
Inventor 毛敏峰
Owner ZHANGJIAGANG BONDED ZONE YAXIN PRECISION PIPE MAKING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products