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It depends on several spot welders. If 2 spot welders can do that. Obviously, what you want is 1 spot welding machines to discharge at the same time, that depends on the structure and welding requirements, low requirements, you can. As a spot welding equipment manufacturers certainly do not agree to do so, the welding effect is unstable, is the first big. To be efficient, welding quality requires more investment in equipment. Why not? In the case of 1 sets of spot welding machine, it is difficult to achieve the design of solder joints consistent.s
1, K - power switchUsed to connect (or cut off) contact with mains power (220V, 50 Hz)2, RT - starting resistanceWhen the welding machine is started, the filter electrolytic capacitor should be charged. In order to avoid excessive surge current damage to the switch and trigger circuit breaker tripping, access start at boot time to limit the inrush current resistance. After normal operation, the starting resistor is shorted by the relay. In actual circuit, in order to avoid the damage of starting resistance caused by inrush current, the starting resistance adopts thermistor (PTC and NTC), they have good shock resistance.3, J1 - relayAfter the switch is switched on, the current is charged by the starting resistor to the filter electrolytic capacitor. When the capacitor voltage reaches a certain value, the auxiliary power supply starts to work, the 24V power is supplied, the relay is pulled in, and the starting resistance is short circuited.4, DB - silicon bridgeThe silicon bridge is used for primary rectification, and the DC current of the 308V is rectified by rectifying the mains 220V and 50 Hz alternating current.5, C1 - electrolytic filter capacitorAfter rectification, the output DC current of 308V is pulsating DC, and the capacitor plays a smoothing role6, R - discharge resistanceAfter the shutdown, there is a high voltage in the filter capacitor. For safety purposes, the resistor will be used to drain the power.7, C2 - high frequency filter capacitorIn the high frequency inverter, the high frequency current is needed for the switch tube, while the reason of the electrolytic filter capacitor is the inductance and lead inductance of the filters
After welding the 50~60 parts of the resistance spot welder, the welding is not stable because of the following:1: welding capacity is too small. Continuous high current exceeds the rated capacity requirements of welding machine, welding machine overload leads to insufficient welding current, weld lead caused by unstable welding.2: welding machine rated output welding current is too low. According to the workpiece material, thickness, welding machine rated output current, machine capacity and other factors, choose the appropriate welding parameters, welding pressure and welding process.3: welding machine load rate is too low. It can reduce the working time of welding machine and increase the time of welding machine break. Of course, replacing high-power welders is the only solution to the problem.4: welding loop bad contact. Lead welding after a period of time, at the junction of heating workpiece. Check loop contacts and secure securely. Click or other contact points appear oxidation, timely cleaning, polished clean.s