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A kind of output current forward and reverse DC welding machine control circuit

A technology of DC welding machine and control circuit, applied in the direction of welding power source, etc., can solve the problems of solder joint quality influence, single current direction of DC welding machine, loss and other problems, and achieve the effect of solving the polarity effect

Active Publication Date: 2022-03-18
珠海微点焊电子工业有限公司
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Problems solved by technology

[0002] For the current electronic DC welding machines on the market, after a period of welding, one side of the tip of the two poles of the welding head will have a larger loss than the other, causing the welding head to be easily damaged and the quality of the solder joints will be affected. This is because the existing DC The current direction of the welding machine is single, and the direct current of a single direction will produce the polarity effect to cause the above-mentioned problem, and this problem is a major defect of the existing direct current welding machine

Method used

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  • A kind of output current forward and reverse DC welding machine control circuit
  • A kind of output current forward and reverse DC welding machine control circuit
  • A kind of output current forward and reverse DC welding machine control circuit

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Embodiment Construction

[0019] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that in the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0020] Such as Figure 1-4 As shown, a control circuit for forward and reverse output current DC welding machine, including MCU microprocessor 1, polarity processing circuit module 2, first power drive circuit module 3, second power drive circuit module 4, first power switch The circuit module 5, the second power switch circuit module 6 and the transformer conversion circuit module 7, wherein the transformer conversion circuit module adopts a tapped transformer.

[0021] The signal input terminal of the polarity processing circuit module 2 is connected to two electrical signals with the same amplitude and opposite polarity output by the welding machine, and the output terminals of the polarity processing circui...

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Abstract

The invention discloses a forward and reverse DC welding machine control circuit with output current, which is characterized in that it includes an MCU microprocessor, a polarity processing circuit module, a first power driving circuit module, a second power driving circuit module, a first power A switch circuit module, a second power switch circuit module and a transformer conversion circuit module. The invention outputs electric signals with different current directions through circuit control in two welding cycles before and after, which solves the polarity effect of the welding head, prolongs the service life of the welding head and improves the quality of welding points.

Description

technical field [0001] The invention relates to the technical field of resistance welding electronic welding machine electronic circuits, in particular to a control circuit for forward and reverse output current DC welding machines. Background technique [0002] For the current electronic DC welding machines on the market, after a period of welding, one side of the tip of the two poles of the welding head will have a larger loss than the other, causing the welding head to be easily damaged and the quality of the solder joints will be affected. This is because the existing DC The current direction of the welding machine is single, and the direct current of a single direction will produce the polarity effect and cause the above-mentioned problem, and this problem is a major defect of the existing direct current welding machine. Contents of the invention [0003] Based on the deficiencies of the prior art, the present invention aims to provide a control circuit for forward an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K11/24
CPCB23K11/24
Inventor 张淑燕
Owner 珠海微点焊电子工业有限公司
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