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Molding method of automotive interior part with multilayered structure

A molding method and technology for automotive interiors, applied in household components, household appliances, other household appliances, etc., can solve the problems of complex processes, uneven skin texture, breakdown, etc., and achieve uniform surface texture and good appearance. Effect

Inactive Publication Date: 2016-07-13
SHANGHAIK YANFENG JINQIAO AUTOMOTIVE TRIM SYSTEMS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of exudation, breakdown, wrinkles, complicated process and environmental pollution in the above-mentioned prior art, the present invention aims to provide a novel method for molding automotive interior parts with a multi-layer structure so as to overcome the problems of the prior art. Defects of uneven skin texture in low-pressure injection molding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The manipulator grabs the TPO skin with a buffer layer and moves it to the first heating device. The temperature of the second heating device on the manipulator is set at 60°C, and the temperature of the first heating device is set at 120°C. When the TPO skin with a buffer layer When heated to 120°C, the manipulator moves the softened skin into the cavity of the die. The mold is closed, the vacuum equipment on the cavity side is started, the skin is adsorbed to the surface of the mold cavity, the booster equipment on the side of the mold core is opened, the skin is completely attached to the surface of the mold cavity, and the preliminary skin texture is completed copy. Then the mold is slightly opened by 1mm, the molten polypropylene resin is injected into the mold cavity, the mold is closed, and the molten PP resin is pressed onto the TPO skin with a buffer layer, and the skin is further pressed against the mold skin after being subjected to the pressure of injection ...

Embodiment 2

[0024] The manipulator grabs the TPO skin and moves to the first heating device. The temperature of the second heating device on the manipulator is set at 100°C, and the set temperature of the first heating device is 100°C. When the TPO skin is heated to 110°C, the manipulator The softened skin is moved and placed in the cavity of the die. The mold is closed, the vacuum equipment on the cavity side is started, the skin is adsorbed to the surface of the mold cavity, the booster equipment on the side of the mold core is opened, the skin is completely attached to the surface of the mold cavity, and the preliminary skin texture is completed copy. Then the mold is slightly opened by 5mm, the molten ABS resin is injected into the mold cavity, the mold is closed, and the molten ABS resin is pressed onto the TPO skin with a buffer layer, and the skin is further pressed to the mold skin after being subjected to the pressure of injection and holding pressure After cooling, the resin an...

Embodiment 3

[0026] The manipulator grabs the PV°C skin and moves to the first heating device. The second heating device on the manipulator is turned off. The temperature of the first heating device is set at 150°C. When the TPO skin is heated to 150°C, the manipulator will soften the The skin is moved and placed in the cavity of the die. The mold is closed, the vacuum equipment on the cavity side is started, the skin is adsorbed to the surface of the mold cavity, the booster equipment on the side of the mold core is opened, the skin is completely attached to the surface of the mold cavity, and the preliminary skin texture is completed copy. The molten PP resin is injected into the mold cavity, and the skin is further pressed to the textured surface of the mold by the pressure of injection and holding pressure to obtain a better textured effect. After cooling, the resin and the skin are combined to form a multi-layer structure interior parts.

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Abstract

The invention relates to a molding method of an automotive interior part with a multilayered structure. The molding method comprises the following steps: S1, starting a first heating device; heating and softening leather without patterns and then putting the leather into a mold cavity of a concave die; S2, carrying out die assembly; starting vacuum equipment and pressurizing equipment at the same time so that the leather is tightly stuck on the mold cavity surface of the concave die; S3, injecting fused resin; molding the resin and sticking the resin with the leather; meanwhile, copying the patterns of the mold cavity surface of the concave die onto the leather; and S4, carrying out die sinking and taking out the automotive interior part with the multilayered structure. The automotive interior part with the multilayered structure is molded through a one-step method, so that the problems of a low-pressure injection molding method of material leakage, puncturing, folds and non-uniform depths of the surface leather patterns are solved; and the method can avoid disadvantages of a glue covering process that procedures are complicated, toxicity and harms exist and the like.

Description

technical field [0001] The invention relates to the molding of automotive interior parts, more particularly to a molding method of multi-layered automotive interior parts. Background technique [0002] At present, the molding methods of multi-layer automotive interior parts include the following two methods: [0003] The first is low-pressure injection molding: the skin with the skin texture is placed in the injection mold, and then the molten resin and the skin are combined to form a multi-layer automotive interior part through low-pressure injection molding. Among them, the skin is subjected to the joint action of mold compression and molten resin extrusion. Due to the difference in the longitudinal and transverse extensibility of the skin, it usually leads to problems such as bleeding, breakdown, wrinkles, and uneven skin texture. [0004] The second is the glue encapsulation process: directly or after forming the epidermis with skin texture, it is bonded together with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29C45/16B29L31/58
CPCB29C45/1418B29C45/16B29C2045/14213B29L2031/58
Inventor 马一萍师杰王为夷桑玲琳
Owner SHANGHAIK YANFENG JINQIAO AUTOMOTIVE TRIM SYSTEMS CO LTD
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