Automatic spot welding machine

Abstract

The invention discloses an automatic spot welding machine and relates to a spot welding machine. The machine comprises a cylinder, an upper electrode and a lower electrode, wherein the cylinder drives the upper electrode; the upper electrode comprises an upper die holder positioned on the top of a welding machine head, an automatic weight reducing device, an oscillating bar balancing device and an upper welding head; the automatic weight reducing device is matched with the upper die holder and is connected with the oscillating bar balancing device; the upper welding head is arranged under theoscillating bar balancing device and can be adjusted back and forth along the feeding direction relative to the oscillating bar balancing device; and the lower electrode comprises a lower template, alower base plate and a lower die holder arranged and fastened from top to bottom. The machine also comprises an automatic feeding device capable of moving a lower welding head back and forth along the feeding direction, and the lower welding head; and the machine further comprises a magnetic locking device. The machine automatically feeds, the whole sequence of welding can be finished by only onemachine after manual positioning at one time; the welding head has low abrasion and long service life; the welding spots are positioned on the same line, are uniform, and are stably welded; and the automatic spot welding machine saves labor and time and has high efficiency.

Description

technical field [0001] The invention relates to a spot welding machine, in particular to an automatic spot welding machine which magnetically locks welding parts, tracks feed, automatically performs balance adjustment and stabilizes welding points. Background technique [0002] The resistance spot welding machine has the characteristics of high production efficiency, low cost, and material saving, and is widely used in aviation, aerospace, energy, electronics, automobile, light industry and other industrial sectors. It is a device that applies pressure through the electrode after the weldment is combined, and uses the resistance heat generated by the current to pass through the contact surface of the welding head and the adjacent area for welding. [0003] In the prior art, a purely manual single-action spot welding machine is used to weld the shrapnel. There are two, three, four, five, or even more solder joints on one piece of shrapnel, and the single-action spot welding m...

AI Technical Summary

Problems solved by technology

[0009] Sixth, when using a fixed two-point welding head, due to the existence of processing errors, assembly, and inconsistent heights of the two points of the welding head after grinding and wear, the two welding points of the welding head cannot fully contact the weldment, resulting in poor welding quality. Poor, the solder joints are low and easy to fall off, the welding is unstable, and the solder joints are no longer in a straight line

[0010] In short, the efficiency is low, the cost is high, and the welding is unstable

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