Before-welding shaping device for sheet metal edge rolling pipe

Abstract

The invention relates to a before-welding shaping device for a sheet metal edge rolling pipe. The before-welding shaping device comprises a machine frame. A shaping passageway extending in the axial direction is arranged on the machine frame. An upper pressing wheel support extending in the axial direction of the shaping passageway is connected to the portion, above the shaping passageway, of themachine frame in a hanging manner. Multiple upper pressing wheels are sequentially arrayed and arranged on the upper pressing wheel support in the axial direction of the shaping passageway. Each upperpressing wheel is connected to the upper pressing wheel support in a rotating manner through an upper wheel axle fixedly connected with the upper pressing wheel. The lower edges of the upper pressingwheels are lower than the lower edge of the upper pressing wheel support. The upper wheel axles are perpendicular to the axial direction of the shaping passageway. A drive device used for driving allthe upper wheel axles to rotate is further connected to the machine frame. The drive device is in transmission connection with all the upper wheel axles through a transmission mechanism. The lower end of the upper pressing wheel support is connected with multiple first guide plates extending downwards. The lower ends of all the first guide plates are connected with a lower pressing wheel supporttogether. Lower pressing wheels corresponding to the upper pressing wheels in a one-to-one correspondence manner are connected to the lower pressing wheel support in a rotating manner. The before-welding shaping device can conduct shaping on joints of the sheet metal edge rolling pipe, and the post-welding effect can be improved.

Description

[0001] Technical field: [0002] The invention relates to a pre-welding shaping device for sheet metal coiled round pipes. [0003] Background technique: [0004] There are a large number of holes on the pipe wall of the exhaust pipe of the automobile. If the ready-made round pipe is used for production, it is difficult to punch the wall of the round pipe. Therefore, it is necessary to punch the plate first, and then roll it. round and welded. [0005] The sheet metal round tube formed after the sheet is rolled has a certain degree of resilience, and after the sheet is rolled, because the edge of the sheet is difficult to be rounded, the edges on both sides of the butt joint of the sheet metal round tube are outward In the arched state, it is impossible to weld directly, and the quality of the welded pipe fittings cannot meet the requirements. [0006] Invention content: [0007] The technical problem to be solved by the present invention is to provide a pre-welding shaping ...

AI Technical Summary

Problems solved by technology

[0005] The sheet metal round tube formed after the sheet is rolled has a certain degree of resilience, and after the sheet is rolled, because the edge of the sheet is difficult to be rounded, the edges on both sides of the butt joint of the sheet metal round tube are outward In the arched state, it is impossible to weld directly, and the quality of the welded pipe fittings cannot meet the requirements.

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