You ask the master, a suspension spot welding machine control principle, I now need to do a detection tool for specific details: when the success of welding torch ends will have powerful currents, I mainly when this powerful current I will remember a welding work data, this is my signal how should the acquisition. Or how should I find the signal point in the control cabinet of the electric welding machine? I have the circuit diagram of the welder here, because the first contact with the welding machine is not very clear. I am a novice, look Haihan heroes!
Magnetic switches can be used to detect, but there is a need for the consumer association measures, or the accounting number is not allowed, the welding machine board has welding output signal points, the counter can be directly collected
You this is the equivalent of a counter current through the method, considered a record, but the conventional signal acquisition counter voltage value, you can pass the current into voltage does not exceed the value of 30V to counter acquisition equipment above, when the voltage reaches above 5V can be considered to be a high level, a number of the best. You calculate this current size range, across an appropriate resistance, by recording more than 5V times more than by the voltage of this resistance to count.
Suspension type spot welding control principle: hanging 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, "the beginning, welding procedure at the same time," the primary coil of the transformer by controlling and power on SCR welding, secondary produce welding current, welding of the workpiece, the "end welding" program 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 hanging spot welding machine, the time control of the procedures such as pressure, welding, maintenance and rest 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.
