自动装配设备中的静电防护问题（Electrostatic protection in automatic assembly equipment）.doc

自动装配设备中的静电防护问题（Electrostatic protection in automatic assembly equipment） Electrostatic protection in automatic assembly equipment Circuit board assembly manufacturers often have to do some jigs and fixtures to improve production efficiency, but the production is often too much, considering the convenience of use, and ignoring the electrostatic protection problem. The electrostatic protection fixture is not grounded or operator wear anti-static wrist strap so simple, it is also involved in parts, materials and installation etc.. Taking automatic assembly equipment as an example, this paper introduces some antistatic measures that should be adopted in equipment assembly. Donn G. Bellmore Universal Instruments Corporation Electrostatic discharge (ESD) has been a key research issue of printed circuit board assembly for many years. However, the progress in this field has not been able to keep pace with the development of solid devices and automated assembly equipment. The traditional ESD control is not very perfect, now a lot of assembly equipment per hour can be placed 4000 to 20000 design elements, if not properly considered, automatic equipment will produce large amounts of static electricity and cause damage to multiple devices in a short period of time. Materials, fasteners, installation method and reliable grounding technology is very important to choose the influence for the control of ESD, this paper will discuss how ESD is produced, the harm caused by its existence, and the methods to reduce the harm of ESD in the assembly process. What is ESD? In short, ESD is the fast charge of electricity, and the electronics industry spends billions of dollars on it every year. We know that all substances are made of atoms, electrons and protons in the atom. When a substance gains or loses electrons, it loses its electrical balance and becomes negatively charged or positively charged. A positive charge or a negative charge accumulates on the surface of the material, causing