摘要
夹芯注射成型零件由2种塑料组合而成,表层塑料要有好的表面性能,而芯层材料则有高的力学性能。由于涉及的工艺参数多、成型机理复杂,夹芯注射成型时易出现芯层材料突破壳层的现象,导致成型制品报废。本文以模流分析软件M P I为工具,以桶形制件为试验模型,通过正交试验的方法,研究了夹芯注射成型工艺参数对芯层熔体突破的条件,并得到了最佳的成型工艺参数。研究结果表明,夹芯注射成型时,对芯层熔体突破影响最大的工艺参数是芯层熔体的注射温度,其次分别是芯层熔体的注射速率和壳层熔体的注射速率,而模具温度和壳层熔体注射温度的影响最小。
The co-injection molded parts can be produced by the combination of two types of plastic materials, such as using the skin material to achieve required surface properties, while using the core material to obtain sufficient mechanical properties or to reduce cost. Because the molding factors are numerous and the molding mechanism is complex, core melt may break through skin melt in molding, and waster may be produced. In this paper, barrel product, which was used as the model, was tested by orthogonal test method and simulation software MPI. Process parameters＇ effect on breakthrough of core melt was studied, and optimum process parameters were obtained. The result shows that injection temperature of core melt is the main factor of the breakthrough of core melt. Next factor is the injection rate of core melt, and the injection rate of skin melt, while mold temperature, and injection temperature of skin melt have light influence on the breakthrough of core melt.
出处
《轻工机械》
CAS
2006年第3期30-32,共3页
Light Industry Machinery
基金
浙江省教育厅科研计划项目(20030149)
关键词
夹芯注射
熔体突破
正交试验
塑料
co-injection
breakthrough
orthogonal test
plastic
