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塑料模具设计要考虑的结构要素有:
塑料模具设计要考虑的结构要素有:
The structural elements considered in the design of plastic moulds are as follows:
①分型面,即模具闭合时凹模与凸模相互配合的接触表面。它的位置和形式的选定,受制品形状及外观、壁厚、成型方法、后加工工艺、模具类型与结构、脱模方法及成型机结构等因素的影响。
The parting surface is the contact surface between the die and the punch when the die is closed. The selection of its position and form is influenced by the shape and appearance of the product, wall thickness, forming method, post-processing technology, die type and structure, demoulding method and the structure of the forming machine.
②结构件,即复杂模具的滑块、斜顶、直顶块等。结构件的设计非常关键,关系到模具的寿命、加工周期、成本、产品质量等,因此设计复杂模具核心结构对设计者的综合能力要求较高,尽可能追求更简便、更耐用、更经济的设计方案。
(2) Structural parts, i.e. slider, inclined top, straight top block of complex die, etc. The design of structural parts is very critical, which is related to the life, processing cycle, cost and product quality of the die. Therefore, the design of complex core structure of the die requires a higher comprehensive ability of the designer, and pursues a simpler, more durable and more economical design scheme as far as possible.
③模具精度,即避卡、精定位、导柱、定位销等。定位系统关系到制品外观质量,模具质量与寿命,根据模具结构不同,选择不同的定位方式,定位精度控制主要依靠加工,内模定位主要是设计者充分去考虑,设计出更加合理易调整的定位方式。
(3) Mould accuracy, that is, avoidance of cards, precise positioning, guide pillars, positioning pins, etc. The positioning system is related to the appearance quality of products, the quality and life of dies. According to the different structure of dies, different positioning modes are selected. The positioning accuracy control mainly depends on processing. The positioning of internal dies is mainly considered by the designer to design a more reasonable and easy-to-adjust positioning mode.

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