毕业设计-低电压接线座注塑模设计(论文)摘要

低电压接线座注塑模设计

摘 要

低电压接线座是低电压插座中一个集造型、结构作用的重要部件。它有一定的生产批量。本次毕业设计的主题是低电压接线座注塑模设计，考虑到塑件与低电压插座体及内部元器件之间有配合要求，所以塑件的部分尺寸精度要求较高。塑件的外形较复杂，结合模具结构设计应合理，质量可靠，操作方便，可以采用一模二腔、单分型面的模具结构，为使加工方便，型腔和型芯的结构都采用镶拼式，并且在设计中还要对型腔侧壁和支承板进行强度和刚度的校核。塑件材料POM，是一种性能优良的热塑性工程塑料，其性能不亚于尼龙，而价格却比尼龙低廉。但缺点是成型收缩率大，在模具设计时，要注意浇道阻力要小，注意塑化温度和模具温度的控制。模具的定模和动模均由两块模板组成，推杆推出塑料件，浇注系统采用潜伏式浇口，所以塑件可以自动切断浇注系统凝料。对于选用POM作为塑件材料的模具，需要注意的是，与塑件接触的零件，选用耐腐蚀钢PCR。

关键词：注塑成型，模具设计

Injection molding design of Low voltage wiring seat

ABSTRACT

Low voltage wiring seat is a important part of the collection modeling of sculpt and structure function in the low voltage plug. It has certain batch production. The topic of the graduation design is injecting molding design of the low voltage writing seat. Considered models has the coordinate request with between the low voltage plug body and the internal primary device, the partial size accuracy of plastic part is required to be high. Because the contour of the plastic part is complex, unifies the mold structural design to be reasonable, the dependable quality, the ease of operation, may use a mold with two cavity and the single minute profile mold structures. To cause the processing to be convenient, the structure of the die space and the core both uses combined mode, and with carrying on the intensity and the rigidity examination in the design to the die space sidewall and the support plate. Plastic material POM, is a fine performance thermoplastic engineering plastic, its performance is not inferior to the nylon, but the price is actually more inexpensive than the nylon .The shortcoming of POM is large molding shrinkage, so in the mold design, people must pay attention to the running channel resistance to be small, attention plasticizing temperature and mold temperature control. The mould and dynamic model is both composed of two template, the throughout lever promotes the plastic. The gating system uses the ambush type runner; therefore models can be possible to be automatically turned off from gating system. Choosing POM as plastics materials, what needs to be paid attention to, the models contact the plastic parts selects anti-corrosive steel PCR.

KEYWORDS：injecting molding，mold design

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