Injection molding method

A technology of injection molding and semi-finished products, applied in the field of injection molding, can solve the problems of high product scrap rate, inconsistent cooling time, warping and deformation of two-color finished products, etc., and achieve the effect of complex process technology requirements, high development costs, and large one-time investment

Active Publication Date: 2020-05-22
NINGBO BULL ELECTRIC CO LTD
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Problems solved by technology

[0003] The injection molding of traditional two-color products usually uses a special two-color mold, that is, two materials can be injected simultaneously in one pair of molds; due to the inconsistent cooling time of the two plastics during the two-color injection molding process, the resulting molding stress is different (specifically, it can be said The two-color shrinkage is inconsistent), and there is mutual binding force between the two plastics during the injection molding process, resulting in different degrees of warping and deformation of the final two-color finished product, and the deformation of the two-color product is uncontrollable. Once deformation occurs, It is difficult to achieve correction through the correction of jigs in the later stage, especially the two-color product molding of different materials, because the shrinkage difference of different materials is large, which makes the correction in the later stage more difficult and the product scrap rate is high

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  • Injection molding method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the present invention provides a kind of injection molding method, comprising:

[0024] S1: Obtain the relevant parameters of the semi-finished product, and obtain the 3D data of the semi-finished product in advance;

[0025] S2: Carry out mold flow analysis according to the relevant parameters of the semi-finished product, that is, according to the 3D data of the semi-finished product, input the required relevant analysis parameters in the injection molding simulation software to obtain the deformation data of the semi-finished product after cooling; specifically, according to the semi-finished product Input the required analysis parameters in the injection molding simulation software: mold temperature, material temperature, injection time, pressure holding time, V / P conversion, product volume, film locking f...

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Abstract

The invention discloses an injection molding method. The injection molding method comprises the steps that 3D data of a semi-finished product are obtained; deformation data of the semi-finished product are obtained according to 3D data analogue simulation of the semi-finished product; 3D data of a target product are obtained; final deformation data of the target product are obtained according to the 3D data of the target product and deformation data analogue simulation of the semi-finished product; a buckling deformation zone is determined according to deformation data of the target product; atarget product forming mold is reversely designed according to the buckling deformation zone of the target product; and the semi-finished product is put into the target product mold for injection molding in an insert form, and a final target product is obtained. According to the injection molding method disclosed by the invention, the deformation mold is designed through reverse engineering, theproduct is corrected through finished product reverse compensation and deformation, and thus, the finally obtained product is more close to a really required shape structure.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to an injection molding method. Background technique [0002] Two-color products, generally speaking, contain two different colors on one product. The plastics of the two colors can be the same material or different materials; of course, two-color products also include the same color but different materials. Condition. [0003] The injection molding of traditional two-color products usually uses a special two-color mold, that is, two materials can be injected simultaneously in one pair of molds; due to the inconsistent cooling time of the two plastics during the two-color injection molding process, the resulting molding stress is different (specifically, it can be said The two-color shrinkage is inconsistent), and there is mutual binding force between the two plastics during the injection molding process, resulting in different degrees of warping and deformation of the fi...

Claims

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Application Information

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IPC IPC(8): B29C45/16B29C33/38
CPCB29C33/3835B29C45/0025B29C45/1671B29C2045/1673
Inventor汪海涛
OwnerNINGBO BULL ELECTRIC CO LTD