Unlock instant, AI-driven research and patent intelligence for your innovation.

Nozzle of injection molding machine

A technology for injection molding machines and nozzles, which is applied in the field of injection molding equipment and can solve problems such as ineffective effects

Active Publication Date: 2016-07-13
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The pressure loss at the nozzle is mainly due to the friction between the melt and the wall of the nozzle center hole. Therefore, technicians in the industry always try to set the hole wall of the nozzle center hole as smooth as possible, in order to Reduce pressure loss, however, the effect is not obvious in actual use

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
  • Nozzle of injection molding machine
  • Nozzle of injection molding machine
  • Nozzle of injection molding machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 As shown, the nozzle of the injection molding machine of the present invention includes a central hole 1, and the wall of the central hole 1 is evenly distributed with a plurality of circular pits 2 or evenly distributed with a plurality of grooves 3 with an arc-shaped cross section.

[0021] If the hole wall is provided with pits 2, the plurality of pits 2 are arranged in rows, and the plurality of pits 2 in each row are evenly distributed. The line connecting the center of each row of pits 2 and the radial direction of the central hole 1 The included angle between the deployment directions X is 20°±5°. The ratio of the total area of ​​all the pits 2 to the surface area of ​​the wall of the central hole 1 is 30%-50%. The ratio of the depth h to the diameter ...

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 nozzle of an injection molding machine.The nozzle of the injection molding machine comprises a central hole (1), and a plurality of circular pits (2) or a plurality of grooves with arc-shaped cross sections are uniformly distributed in the central hole (1).By the nozzle of the injection molding machine, flow resistance of melt can be reduced effectively, and pressure loss is lowered.

Description

technical field [0001] The invention relates to the field of injection molding equipment, in particular to a nozzle of an injection molding machine. Background technique [0002] Injection molding is widely used in the production and manufacture of plastic products due to its advantages of high efficiency and high quality. During the injection molding of the injection molding machine, the melt is pumped by the barrel and flows through the nozzle, main channel, runner and gate to the cavity, and the pressure loss will continue to occur during the process of the melt flowing through the above structure, especially when flowing through When the nozzle is used, it will be subject to greater flow resistance and greater pressure loss, resulting in insufficient melt filling and resulting in defects in the formed product. Moreover, in recent years, micro-injection molding technology has become more and more widely used, and the resistance of melt filling in micro-injection molding ...

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): B29C45/20
CPCB29C45/20
Inventor 许少锋楼应侯何平王向垟
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG