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Method for controlling buckling deformation of automobile exterior trim part mold

A deformation control and exterior trim technology, applied in the coating and other directions, can solve the problems that affect the quality of automobile exterior trim parts and the large warpage value, and achieve the purpose of reducing the warpage deformation value, reducing the elastic modulus, and optimizing the cooling system. Effect

Inactive Publication Date: 2020-04-28
ZHEJIANG WANHAO MOLD & PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for controlling the warping deformation of the automotive exterior mold. By designing a new production process, by accelerating cooling and changing the structural outline of the automotive exterior, the warpage of the automotive exterior after injection molding can be solved. If the curvature value is too large, it will affect the quality of automotive exterior parts

Method used

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  • Method for controlling buckling deformation of automobile exterior trim part mold

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Embodiment Construction

[0029] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] A method for controlling the warping deformation of an automotive exterior mold, comprising the following steps:

[0031] (1) Prepare raw materials: determine the raw materials to be used for the automotive exterior parts, the structural shape of the automotive exterior parts, and the design of the basic mold according to the structural shape of the automotive exterior parts. Automotive exterior parts are mainly automotive exterior parts, using polyamide as raw material, polyamide is also called nylon, the melting point of nylon is 230-240°C, and the elastic modulus is 2620MPa; it is a translucent or opaque milky white crystalline polymer with Thermoplastic, lightweight, tough, chemical resistant and durable, also has good abrasion resistance, self-lubrication and solvent resistance.

[0032] Adding 30% glass fib...

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Abstract

The invention belongs to the technical field of injection molding, and particularly relates to a method for controlling the buckling deformation of an automobile exterior trim part mold. The method comprises the following steps of carrying out previous preparation; calculating a buckling deformation value; optimizing a mold; designing and shaping a mold structure; drying a raw material; heating aninjection drum; carrying out injection molding; maintaining the pressure; carrying out cooling ; carrying out demolding; and performing detection; and the novel production process is designed, and the problems that the buckling value is too large and the quality of an automobile exterior trim part is influenced after the automobile exterior trim part is subjected to injection molding are solved by accelerating cooling and changing the structural outline of the automobile exterior trim part.

Description

technical field [0001] The invention belongs to the technical field of injection molding, and in particular relates to a method for controlling the warping deformation of an automobile exterior trim mold. Background technique [0002] With the continuous improvement of people's living standards, plastic products have become an indispensable synthetic material in modern life. Plastic has the advantages of light weight, stable chemical properties, excellent electrical insulation properties, good noise reduction and shock absorption, high specific strength, and wide distribution of mechanical strength. Injection molding technology is to add granular or powdery polymer raw materials into the polymer barrel, plasticize under heating or mechanical shearing, and finally enter the mold under the push of a plunger or screw, and cool and solidify to form a mold cavity. Consistent polymer articles. [0003] Warpage deformation is one of the common defects in injection molding of thin...

Claims

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Application Information

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IPC IPC(8): B29C45/00B29C45/76
CPCB29C45/0025B29C45/766
Inventor 潘勇
Owner ZHEJIANG WANHAO MOLD & PLASTIC
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