A positioning device and welding method for circular seam welding

Abstract

The invention provides a positioning device for circular seam welding, which includes a base plate, clamping blocks, and a pressure plate. The base plate and the pressure plate are respectively located at both ends of the components to be welded, and several clamping blocks are arranged circumferentially around the components to be welded. , one end of the clamp block is detachably connected to the base plate, and the end of the other end protrudes radially inward relative to the axis of the platen at the end beyond the platen and away from the base plate to form a buckle, and the buckle is set The screw hole and the screw, the aperture of the screw hole corresponds to the pressure plate, and the screw is adapted to the screw hole. By adopting the device and method provided by the present invention, the components to be welded can be pressed axially and radially from the outside, and after spot welding, the clamping block can be removed to perform circular seam welding. The operation is simple and convenient, and the function is stable and reliable. It meets the needs of mass production of products, and is suitable for circular seam welding of ordinary shaft products, especially for the positioning and clamping of intermediate partition components such as ruptured diaphragm components.

Description

technical field [0001] The invention belongs to the technical field of positioning devices, and in particular relates to a positioning device and a welding method for circular seam welding. Background technique [0002] When performing circular seam welding on a product, it is necessary to butt the two products to be welded at the circular seam first, then clamp them in the clamping device, and then place them in the welding equipment for circular seam welding. Such products usually use hole shafts The internal positioning method can be clamped, and the internal positioning clamping of the hole shaft is widely used, and is usually suitable for the clamping of packaged products. [0003] The rupture diaphragm assembly is an important part of the safety valve, as shown in the attached manual figure 1 As shown, the rupture diaphragm assembly 1 includes an upper holder 1a, a rupture diaphragm 1b, and a lower holder 1c, and the rupture diaphragm 1b is welded between the upper ho...

AI Technical Summary

Problems solved by technology

When the rupture diaphragm 1b is welded between the upper holder 1a and the lower holder 1c, due to the existence of the rupture diaphragm 1b, a partition structure is formed between the upper holder 1a and the lower holder 1c. The conventional positioning method in the hole axis cannot be used for assembly and positioning, so it is difficult to guarantee the coaxiality of the cylinder surface or hole of the upper holder 1a and the lower holder 1c, which makes the welding of the circular seam very difficult

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