Low-voltage large-current light-weight spot welding machine

Abstract

The invention provides a low-voltage large-current light-weight spot welding machine. The low-voltage large-current light-weight spot welding machine comprises a welding power source which comprises a box body, a first electrode and a second electrode, wherein the first electrode and the second electrode partially extend out of the box body; a movable arm structure which comprises a movable arm and a nut flange, wherein one end of the movable arm is connected with the nut flange; a connecting block which is arranged between a first conductive bridge and the first electrode; a driving device, wherein a driving rod of the driving device is connected with the nut flange and located at the bottom of the box body; and a stationary arm which is connected with the movable arm through a side connecting plate, wherein the side connecting plate is fixedly connected with the stationary arm and the connecting block through a plurality of fastening bolts, the side connecting plate is rotatably connected to the flange structure, and the movable arm structure, the connecting block, the driving device and the fixed arm are fixedly connected into an electrode holder stress connecting mechanism through the side connecting plate. The electrode holder stress connecting mechanism and the welding power source are mounted integrally. The movable arm structure and the stationary arm structure are compact, so that miniaturized design of an electrode holder is achieved, and the electrode holder and the welding power source are easy to disassemble, so that two electrode holders are switched rapidly.

Description

Technical field [0001] The invention belongs to the technical field of welding equipment, and specifically relates to a low-voltage, high-current lightweight spot welding machine. Background technique [0002] At present, lightweight and miniaturized resistance welding is becoming more and more popular among the public. However, most of the existing resistance welding clamps have complex structural designs. Most of the installation structures of the welding power sources adopt complex frame installations. They are large in size, heavy in weight, and cannot reach The reason for achieving lightweight is that the welding clamp, drive device and welding power source are assembled in a complex manner and restrict each other. Each module cannot be maintained and replaced independently of each other, making it impossible to achieve a miniaturized design. Therefore, users use large resistance welding clamps. The purchase of expensive heavy-duty robotic equipment brings unpredictable...

AI Technical Summary

Problems solved by technology

[0002] At present, lightweight and miniaturized resistance welding is more and more popular among the public, but most of the existing resistance welding tongs have complicated structural designs, and most of the welding power supply installation structures adopt complex frame installations, which are large in size and heavy in weight. To achieve the purpose of lightweight, the reason is that the assembly of welding tongs, driving device and welding power supply is complicated and mutually restricted. The modules cannot be maintained and replaced independently of each other, and the miniaturization design cannot be achieved. Therefore, users use large-volume resistance welding tongs. The purchase of expensive heavy-duty robotic equipment brings unpredictable safety hazards and increases costs. It is very important for the miniaturization design of the connection structures of the welding tongs

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