灭火器塑料注射模设计论文.docVIP

灭火器塑料注射模设计 摘要 塑料模具是塑料加工工业中和塑料成型机配套，赋予塑料制品以完整构型和精确尺寸的工具。本课题主要是针对灭火器端盖的注塑模具设计,灭火器端盖具有重量轻、易清洁、耐腐蚀老化、强度高、使用寿命长，制作方便、价格低廉等特点。本次设计主要是根据塑件的外形及塑料的工艺性，确定模具的分型面，浇注系统、选择了注射机、计算了模具成型零件的尺寸，并设计了托板等其他零部件。本设计中采用点浇口注射，利用斜导柱抽芯机构和和斜滑块抽芯机构进行侧向抽芯，推管完成脱模。通过整个设计过程表明该模具能够达到此塑件所要求的加工工艺 关键词： Fire extinguisher in plastic injection mold design Abstract Plastic mold is the plastics industry and plastic molding machine form a complete set, give plastic products to complete configuration and accurate size of tools. The main topic is covered in mold design for the fire extinguisher, the fire extinguisher covered with a light weight, easy to clean, corrosion-resistant aging, high strength, long service life, making easy, low prices and so on. The design is based mainly on plastic parts and plastic form of the process to determine the mold surface, gating system, select the injection machines, molding parts to calculate the size of mold, and the design of the Supporting Plate and other components. This design with some runner injection, using the oblique guide column core-pulling mechanism and and oblique slippery pieces of core-pulling mechanism for lateral core-pulling, push the finish stripping. Through the entire design process that can be achieved in the mold plastic parts required in this process,movement is reliable, the structure is reasonable. Key words:Fire extinguisher plastic injection mould design;Injection mould;Point gate;Inclined guide pillar 主要符号表 α 角 △ 塑料制件尺寸公差 δ 模具成型零件制造公差 μ 塑料对金属的摩擦系数 目 录 摘要 I Abstract II 主要符号表 III 1 绪论 1 1.1概述 1 1.2塑料模具发展状况 2 1.3本次设计的目的及意义 3 2 塑件材料分析与方案论证 5 2.1塑件的工艺分析 5 2.1.1塑件的材料 5 2.1.2聚丙烯的基本特性 5 2.1.3聚丙烯的成型特点 5 2.1.4 聚丙烯的注射成型工艺参数 5 2.2方案论证 6 2.2.1研究对象 6 2.2.1研究方案 7 3 注射成型机的选择 9 3.1估算塑料体积 9 3.2注塑机的注射容量 9 3.4注塑机选择及其相关参数 9 3.4.1注塑机选择 9 3.4.2 XS-ZY-1000型注塑机的主要参数 9 3.5注塑机的校核 10 3.5.1最大注射量校核 10 3.5.2锁模力校核 10 3.5.3模具厚度校核 10 3.5.4开模行程校核 11 4 浇注系统设计 12 4.1浇注系统的功能