Numerical control hydraulic automatic cold welding machine

Abstract

The invention relates to the technical field of welding, in particular to a numerical control hydraulic automatic cold welding machine, which comprises a machine body and a welding gun; the machine body is of an L-shaped structure design; the welding gun is connected to the middle of the outer surface of the right side of the machine body through a cable; a rectangular notch is arranged at the position, close to the center of the front end, of the outer surface of the upper end of the machine body; sliding grooves are arranged at the positions, close to the left side and the right side of the rectangular notch, of the outer surface of the upper end of the machine body; rotating assemblies are slidably connected into the sliding grooves, and the left rotating assembly and the right rotating assembly are designed to be of opposite structures; and each rotating assembly comprises a fixed base, a motor, a rotating shaft, a fixed plate and a clamping assembly, the interior of the fixed base is in a U shape, and the lower end of the fixed base is slidably connected into the sliding groove. Adjustment can be carried out according to the size of the diameter of a workpiece, the situation that a cylindrical hollow pipe fitting-shaped workpiece falls off during welding is reduced, circumferential gap welding and welding wire seam repairing can be carried out on a cylindrical hollow pipe fitting, and the welding efficiency and the welding quality are improved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a numerically controlled hydraulic automatic cold welding machine. Background technique [0002] The cold welding machine cladding the special welding wire to the damaged part of the workpiece through the high heat energy generated by the instantaneous discharge of micro-electricity, and firmly welds it with the original base material. After welding, only a little post-processing of grinding and polishing is required. The cold welding machine can deposit, seal, repair and repair the wear, scratches, pinholes, cracks, defect deformation, hardness reduction, trachoma, damage and other defects on the surface of metal workpieces. It can be used for metal structures in various municipal projects parts repair work. [0003] Existing patent (notification number: CN110919249A) a numerically controlled hydraulic automatic cold welding machine, including a cold welding machine body, a po...

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Problems solved by technology

[0005] In the actual use of the cold welding machine, especially for welding and external repair of cylindrical hollow pipe workpieces, the surface of this kind of workpiece is smooth, and the hole size is different. When clamping, it needs to be adjusted according to the size of the workpiece itself to avoid welding. Causes falling off; welding workers generally use manual rotation and support of the workpiece to maintain a certain speed to achieve circumferential welding when welding small-aperture cylindrical hollow pipe fittings. For welding, holding the workpiece will cause high temperature burns, and the rotation speed of manual rotation is different, which may easily cause uneven welding on the outside of the workpiece and affect the welding effect; in addition, when there is a large gap outside the workpiece, it needs to be repaired by filling the welding wire. The welding wire is stuck in the gap, and the unwelded wire needs to be manually bent in the gap gradually during welding, which will increase the welding supply and demand virtually, and will also cause the welding wire to shift and deform, thereby affecting the filling quality of the welding wire

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