SMT贴片机原理.doc

SMT贴片机工作原理介绍 2012-01-13 11:19 A.M. SMT生产线由丝网印刷、贴装元件及再流焊三个过程构成，solder Printing machine, solder paste inspection machine ,component placer, Reflow oven and auto optic inspector . 2 贴片机的工作原理Mounter placer working principle 贴片机实际上是一种精密的工业机器人，是机-电-光以及计算机控制技术的综合体。它通过吸取-位移-定位-放置等功能，在不损伤元件和印制电路板的情况下，实现了将SMC／SMD元件快速而准确地贴装到PCB板所指定的焊盘位置上。元件的对中有机械对中、激光对中、视觉对中3种方式Mounting Machine actually is a kind of accurate industrial robot which is used for different things, such as engine, electricity, lighting, computer control technology and so on. It places SMC/SMD components quickly and precisely without damaging components and PCBs on the PC board which is designed by us. There are 3 methods of inspection which are machinery checks, laser correcting, vision correcting for recognizing components Surface Mounting Machine actually is a kind of accurate industrial robot which is a synthesis of mechanical ,electrical ,optical and computer technology .It realize to place the component accurately on the specified pad and do not damage the component and PCB by the function pick—transfer—alignment and place . component alignment has three type—mechanical ,laser and optical alignment PCB PC board 印刷电路板 贴装头根据导入的贴装元件的封装类型、元件编号等参数到相应的位置抓取吸嘴、吸取元件；静镜头依照视觉处理程序对吸取元件进行检测、识别与对中；对中完成后贴装头将元件贴装到PCB上预定的位置。这一系列元件识别、对中、检测和贴装的动作都是工控机根据相应指令获取相关的数据后指令控制系统自动完成。贴片机的工作流程框图如图2所示。The placement head pick up the nozzle and component according to the program that edit the component package type and component number . fixed camera inspection, recognize, alignment and place the component on the specified position of the PCB according to program; these serial motion all base on the order of the machine controller . mounter’s working principle as following : The head of the machine can catch nozzles and pick up components by loading components’ packaging type, components’ number and so on. The stationary camera will check and correct the components so that the components can be placed on the board. It was finished automa