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影响模具精密注塑的缘由是什么?

来源:    发布时间:2019-09-23 17:54:44    点击:

  模具设计师必须有丰富的经验在设计和注塑,必须考虑这些因素之间的关系和注塑条件及其明显的因素,如注射压力和空腔压力和充填速度、熔体温度和模具温度、注塑模具结构和浇口形式和分布的产品以及门区域,壁厚,塑料材料,塑料材料中增强填料的含量受结晶度和取向等因素的影响。以上因素的影响也因塑料材料的不同,或其他成型条件如温度、湿度、结晶持续、成型后注塑机的变化而不同。
  Mold designers must have rich experience in design and injection moulding, and must consider the relationship between these factors, injection conditions and their obvious factors, such as injection pressure and cavity pressure and filling speed, melt temperature and mould temperature, injection moulding structure and gate form and distribution of products, as well as door area, wall thickness, plastic materials. The content of reinforcing filler in plastic materials is affected by crystallinity and orientation. The influence of the above factors also varies with the plastic material, or other forming conditions such as temperature, humidity, crystallization duration, and the change of injection moulding machine after moulding.
  在影响精密注塑成型的因素中,模具是获得满足质量要求的精密塑料制品的关键。模具设计的合理与否,将直接影响到塑料制品的质量。由于模具型腔尺寸是由塑料制品所需的大小和材料的收缩,和工程塑料的收缩率往往或手动的塑料制造商推荐的范围值,它不仅与模具浇口形式,浇口位置和分布,以及工程塑料的晶体取向和塑料制品的形状,大小和距离门的位置。影响塑料收缩的主要因素有热收缩、相变收缩、定向收缩、压缩收缩和弹性回复等。
山东模具
  Among the factors affecting precision injection moulding, mould is the key to obtain precision plastic products that meet the quality requirements. Whether the die design is reasonable or not will directly affect the quality of plastic products. Because die cavity size is the size and material shrinkage required by plastic products, and the shrinkage rate of engineering plastics is often recommended by manually manually plastic manufacturers, it is not only with the form of die gate, gate location and distribution, but also with the crystal orientation of engineering plastics and the shape, size and distance of plastic products. The main factors affecting plastic shrinkage are heat shrinkage, phase change shrinkage, directional shrinkage, compression shrinkage and elastic recovery.
  注塑是将塑料从固体到液体再到固体的过程。从晶粒到熔体,再从熔体到产品,需要温度场、流场和密度场。在这些场的作用下,不同的塑料具有不同的聚合物结构和流变性能。所有影响上述“领域”的因素必将影响塑料制品的物理力学性能、尺寸、形状、精度和外观质量。
  Injection is the process of plastics from solid to liquid and then to solid. From grain to melt, and from melt to product, temperature field, flow field and density field are needed. Under the action of these fields, different plastics have different polymer structures and rheological properties. All the factors affecting the above "field" will certainly affect the physical and mechanical properties, size, shape, accuracy and appearance quality of plastic products.
  从而通过塑料制品表达工艺因素与聚合物性能、结构形式、塑料制品之间的内在关系。合理地制定注塑工艺,合理地按图纸设计制作模具,甚至合理地选择注塑设备,对分析和明确这些内在关系具有重要意义。精密注塑与普通注塑压力和注塑速度也不同,精密注塑往往采用高压或超高压注塑,高速注塑可获得较小的成型收缩率。
  Thus, the intrinsic relationship between technological factors and polymer properties, structural forms and plastic products can be expressed by plastics products. It is of great significance to analyze and clarify the internal relations by reasonably formulating injection process, reasonably designing and manufacturing molds according to drawings, and even reasonably selecting injection equipment. Precision injection moulding is different from ordinary injection moulding in pressure and speed. Precision injection moulding often uses high or ultra-high pressure injection moulding. High-speed injection moulding can obtain smaller shrinkage rate.
  以上是山东模具制造商为大家介绍的“影响模具精密注塑的缘由是什么?”相关内容,想要了解更多内容,欢迎访问网站:http://www.jnhjgs.cnAbove is Shandong Mould Manufacturer's introduction of "What is the reason for affecting precision injection moulding of moulds?" For more information, please visit http://www.jnhjgs.cn
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