250克塑料注成型机设计说明书.doc

摘 要 塑料注射成型机是一种能将塑料加热塑化，借助推进机构把熔化的塑料注入模具型腔内，经冷却、定型后形成制品的塑料成型加工设备。它能配置不同的模具，可一次成型外形复杂的制品，是塑料机械中主要机种之一。塑料注塑成型机有很多型式，液压式塑料成型机就是其中之一，其主要由合模机构，注射部件，液压传动及电气控制系统等几部分组成，而液压泵，液压缸、各种液压阀、电机、电气元件以及控制仪表是其中不可缺少的控制元件。 塑料注射成型机以其成型周期短，对各种塑料的加工适用性强，尺寸较精确以及自动化程度高等优点，得到了广泛应用。 关键词：塑料注射成型机、液压系统、液压泵、液压缸、液压阀 ABSTRACT The plastic casts shaper is one kind of heating up the plastic the plasticizing, pours into with the aid of the advancement organization the melting plastic in the mold cavity, after cooling, the stereotypia forms the product the plastic to take shape the processing equipment. It can dispose the different mold, but time takes shape the contour complex product, is in the plastic machinery one of main aircraft types. The plastic injection takes shape already has very many forms. The hydraulic pressure type plastic injection shaper is one of them, it mainly has gathers the mold organization, injects the part, the hydraulic transmission and the electricity control system and so on several parts of compositions, but the hydraulic pump, the hydraulic cylinder, each kind of hydraulic valve, the electrical machinery, the electrical part as well as the control measuring appliance are indispensable control part. ?The plastic injection shaper takes shape the cycle quickly by it, to each kind of plastic processing compatible, the size is precise as well as the automaticity higher merit, obtained the widespread use. Key word: Plastic injection shaper, hydraulic system, hydraulic pump, hydraulic cylinder, hydraulic valv 目 录 摘 要 1 ABSTRACT 2 目 录 3 1 绪 论 4 1.1、塑料注射成型机概述 4 1.2、注射成型机的工作原理 5 1.3、技术要求及已知参数 6 1.3.1对液压系统的要求 7 1.3.2液压系统设计参数 7 2. 250克塑料注射祝液压系统设计计算 9 2.1液压执行元件载荷力和载荷转矩计算 9 2.2.液压系统主要参数计算 10 2.2.1初选系统工作压力 10 2.2.2计算液压缸的主要结构尺寸 10 2.2.3计算液压马达的排量 12 2.2.4计算液压执行元件实际工作压力 12 2.2.5计算液压执行元件实际所需流量 12 2.3.制定系统方案和拟定液压系统图 13 2.3.1制定系统方案 13 2.3.2拟定液压系统图 14 2.3.3液压元件的选择与设计 22 2.4.液压系统性能验算 28 2.4.1验算回路中的压力损失 28 2.4.2液压系统发热温升计算 30 2.4.3冷却器的计算 33 3 系统使用维护说明书 35 3.1. 注塑机温升过高五大危害 35 3.2.