Application method of workshop electric welding machine
A welding machine and workshop technology, applied in the field of glass processing auxiliary equipment, can solve the problems of reducing the failure rate of welding machines and easy burnout of transformers
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Embodiment 1
[0018] Such as figure 1 As shown, the present invention first connects the electric welding machine to the power supply, opens the water inlet switch on the circulating cooling water tank, and when the cooling circulating water passes through the water flow transmitter, connects the controller to allow the equipment to enter the working state; when the cooling water switch is closed When there is no cooling water passing through the water flow transmitter, the controller cuts off the power, and the welding tongs cannot work normally when the power is cut off; if the circulating cooling water tank suddenly cuts off water during work, the water flow flood preventer will immediately transmit the signal to the controller and issue a warning Inform the staff, and at the same time, the controller automatically cuts off the power until the cooling water returns to normal, and the whole equipment also returns to normal, and re-enters the working state; wherein the electric welding mach...
Embodiment 2
[0020] Such as figure 1 As shown, in this embodiment, on the basis of Embodiment 1, the water flow flood control device includes a temperature sensor, a water level sensor, an alarm and a control loop, and the control loop is connected to the temperature sensor, the water level sensor, and the alarm respectively. The control loop is connected with the controller. The control loop is the command center of the water flow preventer. When the water level sensor detects that the water level in the circulating cooling water tank is low, it will transmit a signal to the control loop, and the control loop will control the alarm to sound a buzzer; if the water level in the circulating cooling water tank When the temperature rises sharply due to lack of water, the temperature sensor will transmit the signal to the controller through the control loop, and the controller will directly cut off the power supply to prevent the water-cooled cable from being burned out due to excessive tempera...
Embodiment 3
[0022] Such as figure 1 As shown, on the basis of Embodiment 1, this embodiment also includes an electric shock prevention device arranged on the input end of the transformer. When an electric welding machine used in an automobile production workshop is unloaded, the voltage of the DC welding machine is 55-90V, and the voltage of the AC welding machine is 60-80V, both of which exceed the safe voltage value, but because the voltage is not very high, it is often ignored, especially It is the welder who has a relatively high risk of electric contact. According to the calculation, when the no-load voltage of the welding machine is 70V, the human body is operating in a humid place, and the protective equipment is not properly worn. At this time, the human body resistance RR is about 1600Ω. If the welder's hand touches the jaws, the current IR = V / RR=70 / 1600=0.044A=44MA, under the action of this current, the welder’s hand will convulse, causing ventricular fibrillation. If the resc...
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