继电器塑料外壳的注塑模具设计.doc

PAGE PAGE 1 PAGE PAGE I 继电器塑料外壳注塑模具设计 摘要 本设计为注射继电器模具设计，继电器模具设计中的零件形状较复杂，要保证制品的质量。首先，模具型腔和型芯的形状、尺寸、表面光洁度、分型面、进浇口和排气位置以及脱模方式等对制件的尺寸精度和形状精度以及制件的物理性能、机械性能、电性能、内应力大小、各向同性性、外观质量、表面光洁度、气泡、凹痕、烧焦、浇口形式等都有十分重要的影响。其次，在加工过程中，模具结构对操作难以程度影响很大。在大批量生产塑料制品时，应尽量减少开模、合模的过程和取制件过程中的手工劳动，为此，常采用自动开合模自动顶出机构，在全自动生产时还要保证塑件能自动从模具中脱落。最后用计算机绘制了所有模具的装配总图和部分模具零件的零件图，并编写了设计说明书。 注射模的基本组成是：定模机构，动模机构，浇注系统，导向装置，顶出机构，抽芯机构，冷却和排气系统。 因注射模成型的广泛适用，正是我这个设计的根本出发点。 关键词：模具设计，复杂，质量，生产，注射，成型，浇口，型腔，型芯 PAGE PAGE IV PAGE PAGE 1 ABSTRACT Design for injection mould design of relays, relays parts shaped in the mould design is more complex, to ensure the quality of products. First, mold type cavity and type core of shape, and size, and surface finish, and points type surface, and into poured mouth and exhaust location and release way, on workpieces of size precision and shape precision and workpieces of physical performance, and machinery performance, and electric performance, and within stress size, and isotropic sexual, and appearance quality, and surface finish, and bubble, and au marks, and burn Coke, and poured mouth forms, are has is important of effect. Secondly, in the process, mold structure on the level of operation is difficult to determine a lot. When the mass production of plastic products, should try to reduce mold, mold and take the workpiece during the process of manual labor and, to that end, often using automatic clamping knockouts, in automatic production and a guarantee for plastic parts can automatically fall off from the mold. Finally computer drawing of the General layout and all the mold Assembly parts parts parts diagram and write design specification. Is the basic composition of the injection mould: mold, mold, gating systems, guides, knockouts, core-pulling mechanism, cooling and exhaust systems. Injection molding is widely used, it is my fundamental starting point for the design. Keywords: The mold design ,complicated, The quality, The production，The in