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Double-shot molding method for vehicle internal decoration seat armrest

A technology for two-color injection molding and automotive interiors, which is applied to household components, household appliances, and other household appliances. It can solve the problems of shortening the process time and achieve the effects of improving product qualification rate, high efficiency, and easy realization

Active Publication Date: 2008-01-23
JIANGSU CHANGSHU AUTOMOTIVE TRIM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Purpose of the invention: In order to solve the shortcomings of the existing injection molding method that cannot meet the requirements of customers and the market for the performance, appearance, and feel of automobile armrests, the present invention provides a two-color injection molding method for automotive interior armrests. Simple, suitable for industrial applications, and can simultaneously injection mold automotive interior armrests, greatly reducing process time and improving process efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Taking the armrest of Chrysler 300c car as an example, the ABS injection molding raw material particles in one barrel and the TES injection molding raw material particles in the other barrel are heated and melted separately, and then the melted molten ABS raw material is passed through the screw of the injection molding equipment through the heat flow. The channel is injected into the mold cavity of the armrest substrate at a speed of 40mm / s, that is, the first mold is closed, and after pressure holding and cooling, a one-shot injection product——handrail substrate is formed; the pressure of holding pressure is 45Kgf, and the time is 4.5 s; the cooling temperature is 40°C for the fixed mold, 35°C for the movable mold, and the cooling time is 70s. After the mold is opened, the handrail substrate that has been injection molded is taken out and placed in the position of secondary injection molding. Then the melted molten TES elastomer molten colloid is injected into another...

Embodiment 2

[0016] Taking the armrest of Chrysler 300c car as an example, the ABS injection molding raw material particles in one barrel and the TES injection molding raw material particles in the other barrel are heated and melted separately, and then the melted molten ABS raw material is passed through the screw of the injection molding equipment through the heat flow. The channel is injected into the mold cavity of the armrest substrate at a speed of 45mm / s, that is, the mold is closed for the first time, and after pressure maintaining and cooling, a one-shot injection product—handrail substrate is formed; the pressure of maintaining pressure is 50Kgf, and the time is 5s; the cooling temperature is 43°C for the fixed mold and 38°C for the movable mold, and the cooling time is 73s. After the mold is opened, the handrail substrate that has been injection molded is taken out and placed in the position of secondary injection molding. Then the melted molten state TES elastomer molten colloi...

Embodiment 3

[0018] Taking the armrest of Chrysler 300c car as an example, the ABS injection molding raw material particles in one barrel and the TES injection molding raw material particles in the other barrel are heated and melted separately, and then the melted molten ABS raw material is passed through the screw of the injection molding equipment through the heat flow. The channel is injected into the mold cavity of the armrest substrate at a speed of 45mm / s, that is, the mold is closed for the first time, and after pressure maintaining and cooling, a one-shot injection product—handrail substrate is formed; the pressure of maintaining pressure is 50Kgf, and the time is 5s; the cooling temperature is 45°C for the fixed mold and 40°C for the movable mold, and the cooling time is 75s. After the mold is opened, the handrail substrate that has been injection molded is taken out and placed in the position of secondary injection molding. Then the melted molten state TES elastomer molten colloi...

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Abstract

The invention provides a two-tone color injection method of automobile inner decoration handrail, which heat and smelt a first injection material, then inserts the smelting liquid material into the module cavity of a handrail baseboard by the screw rod of the injection equipment and through a flow passage. After dwelling and cooling, form a handrail baseboard; when heating and smelting the first injection material, another existing group of heating device heats and smelts a second injection material with different color from the first injection material, then inserts the smelting second injection liquid material into another module cavity of a handrail baseboard by the screw rod of the injection equipment and through a flow passage, after dwelling and cooling, form the second injection material flexible body cover on the handrail baseboard formed by the first injection material, finish the forming production of the handrail. The advantage of the invention is that: the invention not only has high efficiency and suitable for industrial application, but after compositing, the handrail is not worse than dermis in color and hand feel. The whole technics is simple and is easy to realize.

Description

technical field [0001] The invention relates to an injection molding method for automobile interior decoration, in particular to a two-color injection molding method for automobile interior decoration handrails. Background technique [0002] The existing injection molding method for automotive interior armrests is mainly ordinary injection molding, also called single-color injection molding. This method uses high temperature and high pressure to melt plastic particles, that is, the raw materials for injection molding armrests, and then inject them into the mold to maintain pressure and cool them. This injection molding method is relatively simple, and the shape of the handrail product is relatively simple. However, people have higher and higher requirements for the performance, appearance, and feel of automotive interior armrests. It turns out that this single shape and feel of automotive interior armrests no longer meets the demanding requirements of customers. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/16B29C45/76B29C45/47B29K55/02B29K81/00B29L31/58
Inventor 彭健陶建兵徐正明
Owner JIANGSU CHANGSHU AUTOMOTIVE TRIM GRP CO LTD
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