Sheet metal repairing machine with automatic welding function

Abstract

The invention relates to a sheet metal repairing machine with an automatic welding function. The sheet metal repairing machine is used for the field of sheet metal repairing machines. The sheet metalrepairing machine with the automatic welding function is characterized in that a secondary of a main transformer T1 in an output driving circuit 1 is coupled and rectified to an output short-circuit detection circuit 2 and is compared with a chip U2A for voltage comparison processing through a boosting transformer T2, and the short-circuit signal output end of the U2A is connected with the short-circuit signal input end of a single-chip microcomputer control circuit 4; the detection signal output end of a Hall current detection circuit 5 is connected with the detection signal input end of thesingle-chip microcomputer control circuit 4, and the fan signal output end of the single-chip microcomputer control circuit 4 is connected with the control signal input end of a fan control circuit 3to transmit fan starting and stopping signals; and the output control signal output end of the single-chip microcomputer control circuit 4 is connected with the power supply control end of the outputdriving circuit 1. The sheet metal repairing machine with the automatic welding function has the advantages that automatic starting and stopping of welding are achieved, the labor intensity of operators is relieved, and the problem of secondary damage caused by too long adjustment in the welding process is solved.

Description

technical field [0001] The invention relates to a sheet metal repairing machine with an automatic welding function, in particular to a circuit of a sheet metal repairing machine for automatically starting welding with isolated sources and pressurization. Background technique [0002] The traditional sheet metal repair machine has no output short-circuit detection circuit, and the machine can only be operated by pressing the hand switch, which greatly reduces the working speed of the machine. At the same time, because it needs to be manually pressed to work, the work intensity of the operator is increased. There is still a problem. The previous technology has an automatic working time setting. Press the gun switch and it will work until the end of the timer. This will cause a problem, that is, if the time is too long, the body plate may be welded through and cause secondary damage. . At the same time, the cooling fan was used to work when it was turned on. Dust and sundries ...

AI Technical Summary

Problems solved by technology

It also solves the problem of secondary damage caused by excessive adjustment of the previous welding process, allowing the repair machine to detect the welding current of the workpiece in real time, lift the gun at any time, and stop welding at any time

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