废旧薄膜键盘印刷电路板拆解方法研究

Research on disassembly method of waste membrane keyboard printed circuit board

废旧薄膜键盘印刷电路板(Printed Circuit Board,PCB),具有数量大、拆解耗时长、对环境有害及单体价值低的特点,因而导致大量废弃,造成资源浪费、污染严重等问题。为实现薄膜键盘PCB的拆解,在分析通用薄膜键盘内部结构特征的基础上,利用电磁感应原理,实现对其内部PCB的测位;基于传统冲床曲柄滑块机构,利用多种电磁检测和控制元件,可进行自动化和连续化拆解;设计中使用SolidWorks2017和MATLAB2016软件进行曲柄滑块机构设计布局和尺寸参数的优化,对机械式冲床进行轻量化设计,初步提出薄膜键盘PCB的拆解方法。

Waste membrane keyboard Printed Circuit Board (PCB) has the characteristics of large quantity,long time for disassembly,and low single value,resulting in a large amount of waste and waste of resources.In order to realize the automatic disassembly of the membrane keyboard PCB,based on the analysis of the internal structural characteristics of the general membrane keyboard,with the principle of electromagnetic induction,identified the position of its internal PCB.Based on the traditional punch crank slider mechanism,a variety of electromagnetic monitoring and control components were used to realize the automation and continuous disassembly target.The design used SolidWorks2017 and MATLAB2016 to optimize the design layout and size parameters for lightweight design of the crank slider mechanism,and initially proposed the disassembly method of the membrane keyboard PCB.