毕业设计（论文）-250g塑料注射机液压系统设计精选.docxVIP

250克塑料注射机液压系统设计摘要塑料注射成型机是将热塑性塑料（PE、PS、PP、PVC、PA、ABS等）在料筒内经外加热和螺杆旋转剪切热作用塑化后，以一定的注射压力注入具有冷却装置的模具内，快速冷却后获得各类塑料制品的专用加工设备。它从加工日用塑料制品（脸盆、杯子、肥皂盒等）开始，逐步进入加工工业用品（电视机壳、洗衣机筒体、周转箱、电话机壳等），目前开始加工物运托盘、环保垃圾箱、汽车保险杠、汽车面板等大型塑料制品。随着制品质量的提高和制品的大型化，推动了注射成型机向高档次、大规格方向发展。注射机是将颗粒状的塑料加热熔化到粘流态，并以快速、高压注入模具型腔中保压一定时间，冷却后成型为塑料产品。注塑机通常由注射系统、合模系统、液压传动系统、电气控制系统、润滑系统、加热及冷却系统、安全监测系统等组成。它是借助螺杆（或柱塞）的推力，将已塑化好的熔融状态（即粘流态）的塑料注射入闭合好的模腔内，经固化定型后取得制品的工艺过程。其中液压传动系统是保证注射成型机能按照预定的工艺过程要求和成型周期中的动作程序能准确有效地进行工作而设置的动力系统。液压传动系统由若干具有特定功能的液压元件（部件）组成并完成注射模的各个动作的一个整体。通常一个完整的液压系统由以下五个部分组成。关键词：液压系统；塑料注射成型机；热塑性塑料；液压马达；液压缸全套图纸，加250g design of hydraulic system for plastic injection machineSummaryPlastic injection forming machine is will thermoplastic plastic (PE, andPS, andPP, andPVC, andPA, andABS?,) in material tube within by outside heating and screw Rod rotating shear hot role plastic of Hou, to must of injection pressure injected has cooling device of mold within, fast cooling Hou get various plastic products of dedicated processing equipment.?It from the daily processing of plastic products (basins, cups, SOAP dishes, and so on), progressively into the processing industry supplies (TV chassis, washing machine barrel, tote boxes, telephones, etc), now begin processing goods pallets, green bins, car bumpers, large plastic products such as car panels.?With the enlargement of product quality and product, injection molding machine is promoted to develop in the direction of high quality and large size.Injection machine is a granular plastic heating and melting of the sticky fluid and fast, high pressure injection mold cavity pressure in some time, cooling molding for plastics products.?Typically by injection system of injection molding machine, clamping system, hydraulic system, electrical control systems, lubrication systems, heating and cooling systems, security surveillance system, etc.?It is by means of screw (or plunger) of thrust, will have good melting of plastic (that is, sticky fluid) good plastic injection into the clo