Miniature pipe two-way hydraulic forming mold

A two-way hydraulic and forming mold technology, which is applied in the field of micro-tube forming, to achieve the effects of avoiding communication, improving plastic forming ability, and improving sealing performance

Inactive Publication Date: 2014-12-24
NANJING UNIV OF SCI & TECH
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can greatly improve the plastic forming ability of microtubes, but so far, there is no suitable device to realize this process

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
  • Miniature pipe two-way hydraulic forming mold
  • Miniature pipe two-way hydraulic forming mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020]A molding device adopting the bidirectional hydroforming mold for microtubes of the present invention, including a PLC control module, an internal pressure pump A, an external pressure pump A', an internal pressure booster B, an external pressure booster B', an internal pressure booster Pressure check valve C, external pressure check valve C', internal pressure high-pressure needle valve E, external pressure high-pressure needle valve E', fuel tank F molding die D; wherein, the molding die includes a guide block 7, a cylindrical shell 6, an inlay Block 5, blank holder ring 4, sealing block 3 and gasket 2; one end surface of guide block 7 is provided with two holes, one of which is the micro tube internal pressure liquid port located at the center of guide block 7, and the other hole is located at the center of guide block 7. The microtube external pressure liquid port at the eccentric position of the guide block 7, the other end surface of the guide block 7 is provided wi...

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

PropertyMeasurementUnit
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a miniature pipe two-way hydraulic forming mold, which comprises a guide block, a cylinder casing, an embedding block, a blank holder and a sealing block, wherein the pressure can be simultaneously exerted on the inner surface and the outer surface of a miniature pipe, the miniature pipe is driven to be formed through the pressure difference, the generation and the growth of tiny cracks inside the miniature pipe and the occurrence of nucleation can be prevented, and further, the plastic forming capability of the miniature pipe can be greatly improved. In addition, one O-shaped sealing ring is respectively arranged on each of two end surfaces of the sealing block, the sealing performance is greatly improved, high-pressure liquid with the pressure intensity as high as 350MPa can be sealed, meanwhile, the high-pressure liquid inside and outside the miniature pipe can also be isolated, and the communication of inside and outside high-pressure liquid can be avoided; in addition, the O-shaped sealing ring is additionally arranged between the embedding block and the blank holder, and the communication of outside high-pressure liquid with the inner pressure through the embedding block is prevented.

Description

technical field [0001] The invention belongs to the technical field of microtube forming, in particular to a bidirectional hydraulic forming mold for microtubes. Background technique [0002] The hydroforming technology of pipe fittings uses pipe blanks as raw materials. By applying liquid pressure and axial load to the pipe cavity, plastic deformation occurs in a given mold cavity, and the pipe wall is bonded to the inner surface of the mold to obtain Forming technology for parts of desired shape. At present, the hydroforming of pipe fittings is mainly used in the manufacture of automobile frame and chassis parts, large ships, and the aerospace industry. However, with the development of science and technology, the demand for micro-hollow pipe fittings in the electronics, medical, micro-device and other industries is increasing. There is an urgent need for a processing technology that can manufacture micro-pipe fittings in large quantities. Micro-pipe hydroforming is exactl...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/047B21D26/041B21D26/045
Inventor 杨晨李鹏唐伟
Owner NANJING UNIV OF SCI & TECH
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap