Driving cylinder special for suspending welder

Abstract

The invention discloses a driving cylinder special for a suspending welder. The driving cylinder comprises a power cylinder, a big piston arranged inside the power cylinder, and a central rod fixedly connected with the big piston. The driving cylinder special for the suspending welder also comprises at least two small cylinders, a fixing base, and a locking device, wherein the at least two small cylinders are uniformly distributed on the side face of the central rod and are used for pre-pushing; the fixing base is fixedly connected with piston rods of the small cylinders; and the locking device is used for locking the piston rods and cylinder bodies of small cylinders at the position of finishing the pre-push stroke; the cylinder bodies of the small cylinders are fixedly connected with the cylinder body of the power cylinder; and the central rod is inserted into the fixing base. The driving cylinder special for the suspending welder has a small volume, so that the power cylinder has universality, and can constitute a special cylinder with different strokes with different small cylinders. The welding stroke can realize thrust superposition through multi-cylinder series connection so as to improve the welding pressure applied to electrodes. Therefore, high pressure is realized through a small stroke. The small cylinders which are separately arranged outside the power cylinder can be replaced at any time and are convenient to maintain and repair.

Description

technical field [0001] The invention relates to a driving cylinder, in particular to a special driving cylinder used for suspending a welding machine to manipulate welding tongs. Background technique [0002] At present, general suspension welding machines use cylinders to push the welding arm to open and close so that the two electrodes of the welding machine can clamp the parts to be welded. Using a single cylinder to apply power requires relatively large air pressure, but it does not require high air pressure when pushing the welding arm in the early stage. It is difficult to apply variable pressure gas in a welding process, and it is difficult to pressurize the gas with the pressure of a single cylinder to achieve the welding requirements. required pressure. In order to increase the welding pressure, you can increase the area of ​​the piston or use multi-section cylinders in series to provide power. These two methods will greatly increase the volume of the cylinder, whi...

AI Technical Summary

Problems solved by technology

Using a single cylinder to apply power requires a relatively large air pressure, but there is no need for high air pressure when pushing the welding arm in the early stage. It is difficult to apply variable pressure gas in a welding process, and it is difficult to pressurize the gas with the pressure of a single cylinder to achieve the welding requirements. required pressure

In order to increase the welding pressure, you can increase the area of ​​the piston or use multiple cylinders in series to provide power. These two methods will greatly increase the volume of the cylinder, which will increase the welding volume and make it inconvenient to operate.

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