Molflow improves the deformation of injection products I. INTRODUCTION for precision injection molds, the deformation of plastic parts is a big problem in the industry. Deformation refers to the bending or distortion of plastic parts, it affects the dimensional accuracy of plastic parts and even the assemblability of plastic parts. Before there is no simulation software, it is solved by continuous mold repair and mold test, but this is a great waste of time, energy and money, at the same time, the effect is not ideal.
This paper describes the use of MoldFlow software to analyze the causes of deformation, which can quickly determine the scheme to guide the actual injection molding, so as to solve such problems, reduce the cost of the mold and shorten the mold cycle, improving the excellence of precision injection molds can improve the competitiveness of enterprises.
Second, the plastic part of the case case is an air deflector of the air conditioner of the household appliance injection mold, with a size of 599X70 X, ASA, no additive components, based on assembly and functional requirements, the flatness requirement of plastic parts is high, and the deformation requirement is 2.
Less than 0mm, otherwise it will affect the assembly, generate noise and affect the function.
Since the customer has previously opened a similar mold and the deformation is large, I hope that the mold opening can reduce the deformation to 2. Within 0mm.
According to the conventional analysis results, the deformation of plastic parts is as high as 11.
0mm, the uneven distribution of internal stress leads to uneven shrinkage. To improve this problem point, it is necessary to solve the problem point of internal stress distribution. Through experience and Molflow analysis, the deformation will eventually be reduced to 1.
8mm, as shown in Fig. 2 below, through a series of analysis and improvement, the deformation will eventually reach 2.
Within, meet the customer's requirements, after the actual mold test, the sample deformation is 2. 2mm, acceptable to customers.
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