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Method for optimizing warping deformation and technological parameters of flat injection-molded part

A technology for process parameter optimization and process parameter application in the field of flat injection molding and injection molding processing, which can solve problems such as low efficiency, improve analysis efficiency and reduce labor input.

Inactive Publication Date: 2016-05-25
JIANGSU UNIV
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  • Application Information

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Problems solved by technology

[0005] In order to overcome the inefficiency of the existing parametric analysis method for the warping deformation of plastic parts, the present invention provides a parameter optimization analysis of the influence of injection molding process on the warping deformation of plastic parts combined with an orthogonal table, and the process parameters are analyzed How to set up effectively

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  • Method for optimizing warping deformation and technological parameters of flat injection-molded part
  • Method for optimizing warping deformation and technological parameters of flat injection-molded part
  • Method for optimizing warping deformation and technological parameters of flat injection-molded part

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and tables.

[0021] The sample used in this embodiment is a mobile phone card slot of a certain type, the injection molding material is PBT, its geometric size is 28.57mmx11.47mmx0.56mm, and a single gate casting system is adopted.

[0022] Step 1: Use the MPI of Moldflow software to optimize the gate position of the flat injection molded part and determine the best gate position.

[0023] Step 2: Determine the value range of the six parameters, and determine the value range of each parameter according to the material characteristics of the product. The mold surface temperature range during injection molding is 270-290°C, and the melt temperature range is 75-95°C , the range of injection molding time is 1-5s, the range of holding pressure is 480-500MPa, the range of holding time is 0.3-0.7s, and the range of cooling time is 2-4s, as shown in Table 1;

[0024] Step 3: ...

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Abstract

The invention relates to the technology and machining field of flat injection-molded parts, in particular to a method for optimizing warping deformation and technological parameters of a flat injection-molded part. The method is used for solving the problems that an existing parameter optimizing analysis method for warping deformation of the injection-molded part is low in efficiency, and software simulation is not close to actual production. According to the method, first, an orthogonal table is selected for setting the technological parameters, an injection molding flowing simulation module in mold flow analysis software is utilized for a simulation experiment, and therefore multiple sets of technological parameter combinations are simulated respectively. Complex experiment parameter simulation is avoided, a three-coordinate measuring instrument is used for testing products produced by the utilization of related technological parameters for experiment verification, simulation effects achieved under different technological parameters are compared, and the speed of obtaining the optimal technological parameter combination is obviously increased.

Description

technical field [0001] The method of the invention relates to the technical field of flat injection molded parts processing, in particular to a method for determining the optimum process parameter combination when processing flat plastic parts, and is particularly suitable for processing injection molded parts to reduce warpage and deformation. Background technique [0002] As one of the main indicators to measure product quality, the degree of warpage deformation has attracted more and more attention and attention from product design engineers and users; to improve and reduce product warpage deformation, optimize the injection molding process and mold structure to become injection molded products One of the key issues in production; warpage of injection molded parts is a serious molding defect, and the root cause of its production is uneven shrinkage; factors that affect warpage include product structure, mold structure, plastic material, molding Process, etc. For most plas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/76
CPCB29C45/7693B29C2945/76588
Inventor 鲁金忠闫冠姜天一王潇霄罗开玉
Owner JIANGSU UNIV
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