文档介绍：买文档送 CAD 图纸, QQ 36396305 买文档送 CAD 图纸, QQ 36396305 摘要塑料挤出机机筒,它是塑料加工过程中的主要设备之一。一般挤出机由五大部分组成: 挤出部分、传动部分、机头加热冷却系统、电气控制系统塑料是一种高分子合成材料,是当今社会发展的基础材料之一,它广泛应用于各种领域。挤出部分是挤出机的主体部分, 主要作用是: 剪切、塑化、捏炼塑料,以一定的压力,均匀连续的向机头输送塑料。由加料装置、螺杆、机筒、衬套等组成。其中螺杆分为单头螺杆、双头螺杆和多头螺杆。衬套材料一般为 38 MoAlA C r。传动系统的作用是驱动螺杆旋转和根据工艺要求调节螺杆的转速, 传动系统由电动机和减速器组成。机头是挤出机的成形部分, 它的作用是使塑料由螺旋运动变为直线运动; 在一定的压力下, 将塑料挤压成各种所需形状的半成品。加热冷却系统是为了使塑料很好的挤出, 适时控制温度, 以防止塑料温度过低或焦灼。电气控制系统的作用是满足挤出工艺条件的需要, 实现对基础机机筒割断温度、机体温度、螺杆转速、驱动扭矩或功率、轴向力等的控制和调节。由温控、调速和检测装置组成。挤出机的传动技术有齿轮变速、直流电机和其他方式等若干种。国内外常用的是由电机通过减速装置带动螺杆进行无级调速传动, 国外多买文档送 CAD 图纸, QQ 36396305 用直流电机变速传动,而国内则多用整流子电机变速传动。买文档送 CAD 图纸, QQ 36396305 挤出机的基本工作过程:带状塑料加入加料口后,在旋转螺杆的作用下塑料被搓成团状沿螺杆槽滚动前进, 因螺杆的剪切、压缩和搅拌作用塑料受到进一步塑化, 温度和压力逐步提高, 呈现出粘流状态, 以一定的压力和温度通过机头,最后得到所需的一定形状的半成品。关键词: 塑料挤出机; 螺杆; 机筒; 机头买文档送 CAD 图纸, QQ 36396305 Abstract The plastic rod extruding machine abbreviation extrude (also name extruding press), it is an important implement of the plastic reclaiming process. The extrude is made of five parts : the part of extruding;the part of passing;the head;the system of heading and cooling;the electrical control major part of the extrude is the part extruding,it is the most use of shear ,rend and pinch the plastic,under fastness pressure,continuous send plastic to the head ,it made up of fill device ,screw ,barrel ,liner and so on,And the screw is disport of single screw ;double screw ;ponent material of liner is 38CrMoAlA. The part of passing is driving the screw rotation and basic the need of the art factitious process to adjustment the screw royal .The part of passing is made of electrical engineering and reducer. The head is the extruding machine formed part .Its function is :Causes the sizing material to e the translation by the helical motion ;under the certain pressure ,extrudes the sizing materials which need the shape the half-finished product. The system of heating and cooling is for the plastic well extrusion ,we control the temperate to prevent the temperate too