A flanging mold

Abstract

The invention discloses a flanging die and belongs to the field of pipeline machining tools. The flanging die comprises a shell, a straightening sleeve, a shaft body and a shaft sleeve; the straightening sleeve is fixedly installed in the shell; the shaft sleeve comprises a first installing part and a first machining part; the first installing part is located in the shell and is fixedly connectedwith one end of the straightening sleeve; the shaft body is movably and coaxially inserted in the shaft sleeve, and comprises a second installing part and a second machining part; the second installing part is sleeved with an elastic piece; the elastic piece is arranged between a clamping table and the second machining part; the second machining part comprises a first cylinder, a second cylinder and an inclined table; the second cylinder is arranged in the first machining part; the end portion of the first cylinder stretches out of the first machining part; the diameter of the first cylinder is smaller than that of the second cylinder; the inner wall of the first machining part and the peripheral wall of the second cylinder are in sliding fit to form a machining groove matched with a screwthread chamfer of a to-be-machined pipeline. The flanging die solves the problem that the operating procedure of flanging is tedious.

Description

technical field [0001] The invention belongs to the field of pipeline processing tools, in particular to a flanging die. Background technique [0002] In order to improve the corrosion resistance of the oil pipe, an inner lining made of high-density polyethylene (HDPE) or ultra-high molecular weight polyethylene (UHMWPE) is usually added to the inner peripheral wall of the oil pipe. [0003] In the production process of combining the liner with the tubing, the following three steps are mainly completed in sequence: placing the liner in the tubing by reducing the diameter, softening both ends of the liner by heating, and flanging Glue the two ends of the softened inner liner to the chamfers of the threads at both ends of the tubing. Among them, the flanging operation is usually completed by using a flanging mold. The common flanging mold has a relatively simple structure and usually includes a mold body. One end of the mold body is provided with an annular machining groove t...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of cumbersome flanging operation procedures, an embodiment of the present invention provides a flanging mold for a flanging forming device

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