Pneumatic spot welding machines are resistance welding devices that use pneumatic pressure transmission in welding processes. They are mainly used in the aerospace, automotive, electronics, and energy industries for welding metal wires, plates, and irregularly shaped parts. They achieve connection through a combination of pressure and electric heating, and are available in single-point, double-point, and multi-point models based on the number of weld points. The core structure includes a high-precision guiding mechanism, a piston rod pressurization system, and a microcomputer constant pressure control system.
This equipment uses high-permeability silicon steel sheets, a water-cooled transformer, and thyristor technology, supporting two-stage discharge and precise adjustment of welding parameters. It is equipped with an LCD screen for real-time data display. Some models integrate high-frequency inverter technology to reduce heat-affected zones and have an automatic workpiece counting function. Patented improvements include pneumatically driven electrodes for automatic tracking welding, a rotating worktable for fixing irregularly shaped parts, and a bidirectional screw drive system to improve processing accuracy. Its positioning device features rubber pad protection and a limit ring structure, optimizing operational convenience and workpiece stability.