DC Spot Welding Machine

What are the components of the three-dimensional intermediate frequency spot welding machine?

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Update time : 2022-05-17 15:42:58
The vertical intermediate frequency spot welding machine system consists of three parts: mechanical device, power supply device and control device.

1. In order to meet the requirements of the welding process, the pressure mechanism (welding tongs) adopts a double-stroke rapid air pressure transmission mechanism. The opening of the welding tongs can be changed by switching the stroke control handle, which can be divided into large opening and small opening. Meet the welding operation requirements. The normal state is that the welding tongs are opened with a short stroke. When the control button is switched to the "power-on" position, the handle switch is pulled, and the welding tongs are clamped and pressurized. At the same time, the current returns to the short stroke after completing a welding cycle under the control of the control system. open state.
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2. Power supply device
The main power circuit consists of resistance welding transformer, thyristor unit, main power switch, welding circuit, etc. At present, the welding equipment we use is a single-phase power frequency AC resistance welding machine with a power of 200kVA and a secondary output voltage of 20V--40V. Due to the collinear production of various models, the welding tongs need to weld high-strength steel plates and low-carbon steel sheets, and the gun arm of the welding tongs has to transmit large mechanical force and welding current. Therefore, the strength, stiffness and heat generation of the welding tongs must meet the requirements, and In order to have good electrical and thermal conductivity, and at the same time, the welding tongs are required to be cooled by water, so choose a new type of welding tongs whose electric arms can withstand a pressure of 400kg.
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3. Controls
The control device mainly provides signal control resistance vertical intermediate frequency spot welding machine action to switch on and off the welding current, control the welding current value, and carry out fault monitoring and processing.