One-time injection molding process for producing automobile instrument panel shell body

An injection molding process, a technology for automobile dashboards, applied in the field of injection molding, can solve problems such as affecting the aesthetics and accuracy of products, low strength of automobile dashboard shells, and prolonging production cycles, so as to shorten the injection cycle and improve the injection molding products. Quality, the effect of improving product quality

Inactive Publication Date: 2020-11-20
TAICANG QIUJING PLASTIC MOLD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this production method has the following disadvantages: 1) Due to the large size of the automobile dashboard shell, a series of problems such as insufficient filling, air pockets, volume shrinkage or warping are prone to occur during the injection molding process, which seriously affects the aesthetics of the product and accuracy; 2) Due to the assembly relationship between the car dashboard shell and other components, the precision of the injection molded parts is high, but the surface precision of the injection molded products is not high at present, and there is a

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1 mold improvement: use ANSYS software to conduct modal analysis and rigidity analysis on the car dashboard shell to obtain a car dashboard shell model with better natural frequency and mode, so as to improve the existing mold accordingly;

[0029] Step 2 Pre-preparation of raw materials: crushing, mixing, screening and preheating the raw materials for the production of automobile instrument panel shells;

[0030] Step 3 Equipment pretreatment: Preheat the plastic injection cylinder; evenly apply a release agent to the cavity surface of the injection mold, and preheat the fixed mold and the movable mold respectively;

[0031] Step 4 Pre-molding process: put the raw materials treated in step 2 into the barrel that has been preheated in step 3 and heat them, so that the material changes from a glass state to a viscous fluid state, so as to meet the requirements of injection molding, and is driven by the screw Down into the barrel, melted and plasticized by the extern...

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 one-time injection molding process for producing an automobile instrument panel shell body. The one-time injection molding process comprises the following steps of 1, improving a mold; 2, pre-preparing a raw material; 3, pretreating equipment; 4, carrying out a pre-plasticizing process; 5, carrying out a mold closing process; 6, carrying out a mold filling process; 7, carrying out a pressure maintaining feeding process; 8, carrying out a cooling and shaping process; 9, carrying out an ejecting-out taking out process; and 10, carrying out a post-treatment phase.

Description

technical field [0001] The invention relates to the field of injection molding, in particular to a disposable injection molding process for the production of automobile instrument panel shells. Background technique [0002] With the continuous expansion of the application range of plastic products in life, such as in the automotive industry, aerospace, building materials, household hardware, instruments and many other fields, the proportion of plastic products is increasing at a very rapid rate. Injection molding is the most commonly used method, which is suitable for parts with complex surface shapes and high precision requirements, and has the advantages of low production cost and high production efficiency. [0003] The automobile instrument panel shell is installed on the instrument panel through the buckle on it, which plays the role of being beautiful and protecting the inner structure of the instrument panel. At present, injection molding is mostly used in the produc...

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): B29C45/00B29C45/26B29C45/27B29C45/50B29C45/73B29L31/30
CPCB29C45/0025B29C45/26B29C45/2708B29C45/50B29C45/73B29C2045/2709B29C2045/5096B29L2031/3008
Inventor 仇军成
Owner TAICANG QIUJING PLASTIC MOLD
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