Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Novel multi-cavity flow-balance cold runner structure

A flow balance, multi-cavity technology, applied in the field of mold design, can solve the problem of non-uniform temperature distribution of molten plastic, and achieve the effect of symmetrical temperature distribution and quality assurance

Active Publication Date: 2014-08-06
SHENZHEN ZHAOWEI MACHINERY&ELECTRONICS CO LTD
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the existing problems in the prior art, and propose a novel multi-cavity flow-balanced cold runner structure. There is still the problem that the temperature distribution of the molten plastic in each cavity is not uniform, which ensures the quality control of injection molding products

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
  • Novel multi-cavity flow-balance cold runner structure
  • Novel multi-cavity flow-balance cold runner structure
  • Novel multi-cavity flow-balance cold runner structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention provides a novel balanced cold runner structure based on the improvement made on the basis of the balanced runner structure in the existing American "Melt Flipper" technology. Such as Figure 4 As shown, the cold runner structure includes a main channel 10, the inlet 101 of the main channel 10 is a glue inlet, the outlet 102 of the main channel communicates with four straight first sub-channels 20, and The four straight first-stage flow passages are arranged in a "cross" shape, and the four straight first-stage flow passages are on the same level, and the main channel 10 is connected to the four straight first-stage flow passages 20 vertical, the shape and length of the four straight first sub-flow channels are the same, and the outlet ends 21 (i.e. ends) of the adjacent two first sub-flow channels in the four straight first sub-flow channels are connected to The two ends 31 of an arc-shaped runner 30 are overlapped, and the overlapping positions on the t...

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 relates to a novel multi-cavity flow-balance cold runner structure. The novel multi-cavity flow-balance cold runner structure comprises a main runner and branch runners communicated with the main runner, wherein the branch runners comprise multiple stages of branch runners, and the novel multi-cavity flow-balance cold runner structure is characterized in that the main runner is communicated with four first-stage branch runners which are positioned in the same plane and in two-two symmetrical arrangement, the main runner is vertical to the four first-stage branch runners, the tail ends of the two adjacent first-stage branch runners are in upper-and-down staggered lap joint with the two ends of an arc-shaped runner, the tail ends of the other pair of the first-stage branch runners are in lap joint with the two ends of the other arc-shaped runner, the central parts of the two arc-shaped runners are communicated with a straight runner, the straight runner and the arc-shaped runners are positioned in the same horizontal plane, and the straight runner is communicated with the next-stage branch runner through a bridge runner. The temperature and the viscosity of molten plastic in the runner disclosed by the invention are symmetrically distributed, and the quality of injection molded products of all mold cavities can be ensured.

Description

【Technical field】 [0001] The invention belongs to the mold design industry and relates to a novel multi-cavity flow-balanced cold runner structure of a mold. 【Background technique】 [0002] At present, the cold runner system of multi-cavity mold is widely used in injection molding production, but the mold with eight or more cavities has the disadvantages of unbalanced flow and large difference in part strength between cavities. The reason is that the molten plastic When flowing in the runner, its shear rate, temperature, and viscosity will change with the position of the molten plastic in the flow direction. The traditional runner structure is easy to cause unbalanced flow, the viscosity, temperature distribution, and pressure distribution of each cavity are different, and at the same time, the products of each cavity are also different. [0003] Such as figure 1 The one shown is the traditional cold runner structure, the plastic melt flows through the main channel 1 to 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
Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/27
CPCB29C45/322
Inventor 沈亚强陆志强李平
Owner SHENZHEN ZHAOWEI MACHINERY&ELECTRONICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com