The Research Of Filmy Capacitor's Feet Welding Controlled Power Supply

This project is a part of "a device which can weld the environment-protection metalize filmy capicitor's feet automatically" As the film capacitors and welding pin material, size, the same welding equipment to achieve pin welding, Study of a rapid, high reliability, high performance welding controllable power is very necessary.According to the topic capacitor pin welding techniques, the use of single-phase AC power supply, thyristor controlled welding transformer -on or off to achieve methods of single-face double point spark resistance spot welding, AT89C51 using digital control welding power easily welding period of adjustment, On this basis a set according to different pin diameter, Welding set the stage time and energized to maintain current parameters of the experience, to truly achieve a multi-purpose. The paper identifies suitable film capacitors pin welding power circuit structure, suitable for the design of the welding equipment controllable power control model. By analyzing and calculating the suitable choice of welding power supply circuit controlled devices, controllers and various protection circuits. Modular software design methods, completed the main program, the initialization subroutine, the subroutine surcharging, an energized, two subroutines, interrupt service routines, the keyboard and display subroutine, the subroutine interruption, and other software modules.In this paper, which linked the actual project has been completed. has developed the capacitor pin automatic welding equipment has been successfully debugging, and has been used in the actual production process.