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注塑模具设计要考虑什么?

来源:http://www.sdlqmj.com/ 日期:2022-01-25

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。
Parting surface, that is, the contact surface between the female die and the male die when the die is closed. The selection of its position and form is affected by factors such as product shape and appearance, wall thickness, forming method, post-processing technology, mold type and structure, demoulding method and molding machine structure.
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。
Structural parts, i.e. sliding block, inclined top, straight top block, etc. of complex die. The design of structural parts is very critical, which is related to the service life, processing cycle, cost and product quality of the die. Therefore, the design of complex die core structure requires higher comprehensive ability of the designer, and pursues a simpler, more durable and more economical design scheme as far as possible.
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。
济南注塑模具
Die accuracy, i.e. card avoidance, fine positioning, guide post, positioning pin, etc. The positioning system is related to the appearance quality of products, mold quality and service life. Different positioning modes are selected according to different mold structures. The positioning accuracy control mainly depends on processing. The internal mold positioning is mainly considered by the designer to design a more reasonable and easy to adjust positioning mode.
浇注系统,即由注塑机喷嘴型腔之间的进料通道,包括主流道、分流道、浇口和冷料穴。特别是浇口位置的选定应有利于熔融塑料在良好流动状态下充满型腔,附在制品上的固态流道和浇口冷料在开模时易于从模具内顶出并予以(热流道模除外)。
The gating system, that is, the feeding channel from the nozzle of the injection molding machine to the mold cavity, includes the main flow channel, shunt channel, gate and cold material cavity. In particular, the selection of gate position should be conducive to filling the mold cavity with molten plastic under good flow state, and the solid runner and gate cold material attached to the product are easy to be ejected from the mold and removed during mold opening (except hot runner mold).
塑料收缩率以及影响制品尺寸精度的精密模具加工各项因素,如模具制造和装配误差、模具磨损等。此外,设计压塑模和注塑模时,还应考虑成型机的工艺和结构参数的匹配。在塑料模具设计中已广泛应用计算机辅助设计技术。
Plastic shrinkage and various factors of precision mold processing that affect the dimensional accuracy of products, such as mold manufacturing and assembly error, mold wear and so on. In addition, the matching of the process and structural parameters of the molding machine should also be considered when designing the compression mold and injection mold. Computer aided design technology has been widely used in plastic mold design.
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