What is the working principle of the suspension type resistance welding machine?
The workpiece welding end welding procedures after the transformer primary coil power, welding machine into "maintenance" program, the pressure to be maintained for a period of time, the solenoid valve opens, releasing the workpiece holder, welding machine into the "rest" program. A welding cycle has been completed at this time.
During the operation of the spot welding machine, the time control of the pressure, welding, maintenance and rest procedures is completed by the time regulator in the spot welder controller. The length of time required for each program and the size of the welding current (i.e., welding specification) shall be preset in accordance with the welding procedure.
The spot welding, the workpiece is located between the electrode holder first, and then press the welding switch, "start pressure" program, the electromagnetic valve action, compressed air into the cylinder so that the electrode holder welding, the workpiece clamping action, after appropriate delay, "start welding procedures" at this time, the primary coil of the transformer through the control and power supply connect the SCR welding welding current, secondary
