Jointing device and jointing method

Abstract

The invention discloses a joining device and joining method. The joining device comprises a frame provided with a rotating main shaft, an extrusion rod arranged on the rotating main shaft, an extrusion needle fixed on the extrusion rod, a fixed extrusion die shoe, an extrusion supporting wheel arranged on the extrusion needle, a locking nut connected to the extrusion needle, and an extrusion supporting ring. A vortex extrusion part with an uneven surface is formed by the extrusion needle and the bottom end part of the extrusion rod, the extrusion die shoe sleeves the lower part of the extrusion rod with a gap between, the front surface of the bottom of the extrusion die shoe recesses inwardly to form a feeding groove and a welding chamber, the outer side of the welding cavity is provided with a work zone, the two sides of the feeding groove are respectively provided with sealed inosculation surfaces, the sealed inosculation surfaces, the work zone and the upper surface of a to-be-jointed matter are consistent in curvature; the bottom wall of the extrusion supporting ring can slidably sleeve the outer side of the flange of the extrusion supporting wheel with a gap between, and the bottom wall has a matching surface which has a same curvature with the lower surface of the to-be-jointed matter. The joining device can ensure that a joining seam and a pipe substrate are basically consistent in thickness and curvature.

Description

technical field [0001] The invention relates to a joining device for non-ferrous metals such as aluminum, magnesium, titanium and their alloys, as well as steel materials such as stainless steel, in particular to a joining device and a joining method for joining thermoplastic workpieces with equal curvature surfaces. Background technique [0002] Pipes are widely used in electrical, petrochemical, air separation and many other fields. Many pipes are manufactured by rolling sheets into straight or spiral seam tube blanks, and then welding the straight or spiral seams to make pipes. Therefore, advanced welding technology is directly related to the production efficiency and quality of pipes. [0003] British Babcock Wire Equipment Company CONFORM continuous extrusion technology is to use the groove on the rotating extrusion wheel to continuously bring the aluminum rod into the extrusion shoe through the friction force, through the friction between tools, especially the internal...

AI Technical Summary

Problems solved by technology

[0005] Although the above two technologies have overcome the welding defect problems such as cracks and pores easily produced by the fusion welding method and poor material properties after welding, they both have their own disadvantages. In fact, due to the existence of curvature, the thickness loss after welding is greater. Even if the thickness compensation is given at the weld, the weld is always straight, and the same curvature surface cannot be obtained, and the excess compensation metal cannot be directly removed.

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