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影响济南模具精密注塑的因素是什么?

来源:http://www.jnhjgs.cn     发布时间:2020-12-25 17:26:51    点击:

模具注塑会受到很多相关因素和环境条件的影响,而基本的是塑料材料、注塑模具、注塑工艺和注塑设备这基本因素。在设计塑料制品的前期,首先根据其环境选定能需要的工程塑料。其次,所选择的塑料材料、成品尺寸精度、制件重量、质量要求以及预想的模具结构来选用适当的注塑机。
Injection molding will be affected by many related factors and environmental conditions, and the basic factors are plastic materials, injection mold, injection process and injection equipment. In the early stage of designing plastic products, the engineering plastics that can be needed are selected according to their environment. Secondly, the appropriate injection molding machine should be selected according to the selected plastic materials, finished product dimensional accuracy, product weight, quality requirements and expected mold structure.
影响济南模具精密注塑的因素是什么?
What are the factors that affect the precision injection molding of Jinan mould?
在影响精密注塑的相关因素当中,模具是获得符合质量要求的精密塑料制品的关键。模具的设计,模具设计是否合理会直接影响塑料制品的质量。
Among the related factors affecting precision injection molding, mold is the key to obtain precision plastic products that meet the quality requirements. Mold design, mold design is reasonable will directly affect the quality of plastic products.
                                        济南模具
由于济南模具型腔尺寸是由塑料制品要求尺寸加上所用材料的收缩率得来,而收缩率常常是由塑料生产厂家或工程塑料手册推荐的一个范围内的数值,它不仅与模具的浇口形式、浇口位置与分布有关,而且与工程塑料的结晶取向性(各向异性)、塑料制品的形状、尺寸到浇口的距离及位置有关。
Because the mold cavity size of Jinan is derived from the required size of plastic products and the shrinkage rate of the materials used, and the shrinkage rate is often a value within a range recommended by the plastic manufacturer or the engineering plastics manual. It is not only related to the mold gate form, gate position and distribution, but also related to the crystalline orientation (anisotropy), shape and size of the engineering plastics It is related to the distance and position of the gate.
影响塑料收缩率的主要因素包括热收缩、相变收缩、取向收缩、压缩收缩与弹性回复等,而这些影响因素与精密注塑制品的成型条件或操作条件有关。
The main factors affecting the shrinkage of plastics include thermal shrinkage, phase change shrinkage, orientation shrinkage, compression shrinkage and elastic recovery, which are related to the molding or operating conditions of precision injection molded products.
因此,模具的设计者必须有丰富的设计和注塑成型经验,必须考虑这些影响因素与注塑条件的关系及其表观因素,如注塑压力与模腔压力及充填速度、注射熔体温度与模具温度、模具结构及浇口形式与分布,以及浇口截面积、制品壁厚、塑料材料中增强填料的含量、塑料材料的结晶度与取向性等因素的影响。
Therefore, mold designers must have rich experience in design and injection molding, and must consider the relationship between these factors and injection molding conditions and their apparent factors, such as injection pressure and cavity pressure and filling speed, injection melt temperature and mold temperature, mold structure and gate form and distribution, gate cross-sectional area, product wall thickness, reinforced filler content in plastic materials And the crystallinity and orientation of plastic materials.
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