Metal steel pipe straightening machine

Abstract

The invention provides a metal steel pipe straightening machine. The machine comprises a case, and the case comprises a feeding opening and a discharging opening. A plurality of sets of upper rotating rollers and lower rotating rollers which correspond to the upper rotating rollers are rotatably arranged in the case. Grooves are circumferentially formed in the upper rotating rollers and the lower rotating rollers, and straightening channels are formed between the upper rotating rollers and the lower rotating rollers. The diameter of the straightening channels is gradually decreased in the direction from the feeding opening to the discharging opening, and then is kept constant. Compared with an existing straightening machine, the pre-straightening function is added, and the metal steel pipe straightening machine can reduce manual pre-straightening operation, and is convenient; troubles and labor are saved, and the surface of a steel pipe can be effectively protected against damage; and meanwhile, the service life of the straightening machine can be prolonged.

Description

technical field [0001] The invention relates to the technical field of metal steel pipe production and processing, in particular to a metal steel pipe straightening machine. Background technique [0002] Straightening machine is a device for straightening metal profiles, bars, pipes, wires, etc. The straightening machine uses straightening rollers to squeeze bars, etc. to change the straightness. Trials of traditional straightening machines are very common, and generally include two rows of straightening rollers, which are divided into three-roll straightening machines, five-roll straightening machines, multi-roll straightening machines, etc. Existing straightening machines generally adopt steel pipe straightening passages of uniform diameter, so for some relatively large steel pipes, it will be difficult for the steel pipe to enter the straightening machine, and it cannot be straightened. At this time, it is necessary to manually pre-straighten these relatively large stee...

AI Technical Summary

Problems solved by technology

Existing straightening machines generally adopt steel pipe straightening passages of uniform diameter, so for some steel pipes with large curvature, it will be difficult for the steel pipe to enter the straightening machine, and it cannot be straightened

At this time, it is necessary to manually pre-straighten these steel pipes with large curvature, and then use a straightening machine to straighten them accurately, which is troublesome and labor-intensive to operate.

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