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Double-shot molding method for vehicle internal decoration seat armrest

A technology of 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, easy implementation, and reducing waste.

Active Publication Date: 2010-04-21
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

[0013] 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 handrail substrate at a speed of 40mm / s, that is, the mold is closed for the first time, and after pressure holding and cooling, a one-time injection product-handrail substrate is formed; the pressure holding pressure is 45Kgf, and the time is 4.5s ; 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 secondary injection molding position. Then the melted molten TES elastomer molten colloid is injected into ...

Embodiment 2

[0015] 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

[0017] 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-color injection method for a handrail of interior decoration of an automobile. A first injection material is heated and melted first, then the melted liquid material is injected into a die cavity of a handrail baseboard through a screw rod of an injection equipment via a hot runner, and after dwelling and cooling, the handrail baseboard is formed; while the first injection material is heated and melted, a second injection material with different colors from the first injection material is heated and melted by another heating device, the melted second injection material is injected into another die cavity of the handrail baseboard through another screw rod of the injection equipment and via a hot runner, after dwelling and cooling, an elastomer of second injection material that covers the handrail baseboard formed by the first injection material is generated, and the forming of the whole handrail is finished. The invention has the advantages that the invention not only has high efficiency and is suitable for industrial application, but also has handrail color and hand feeling not inferior to leather after compositing, and the whole technology is simple and 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 Patents(China)
IPC IPC(8): B29C45/16B29C45/76B29C45/47B29L31/58B29K81/00B29K55/02
Inventor 彭健陶建兵徐正明
Owner JIANGSU CHANGSHU AUTOMOTIVE TRIM GRP CO LTD
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