Plastic-coated elbow manufacturing, forming and bending machine

Abstract

The invention relates to a plastic-coated elbow manufacturing, forming and bending machine which comprises a base and a bending device, and the bending device is arranged on the upper surface of the base. According to the plastic-coated elbow manufacturing, forming and bending machine, a bending unit can be adjusted at any time according to the actually needed shapes of metal pipes within the bending angle range and the bending radian range of the metal pipes of the same specification, other bending dies do not need to be replaced, after adjustment is conducted every time, the shape formed by a bending sliding frame is fixed through a positioning branch chain, and therefore, the bending efficiency can be effectively improved for the metal pipes which are bent into different shapes; and limiting rollers arranged on an upper supporting rod can guarantee that the two ends of the metal pipes and the bending unit are always located on the same horizontal line when the metal pipes are bent, and a position correcting roller arranged on a lower supporting rod is used in cooperation with a position correcting supporting block, so that the distances between the two ends of the metal pipes and the middle position of the bending unit can be kept the same, and in this way, the bending effect of the metal pipes can be better.

Description

technical field [0001] The invention relates to the field of pipe processing, in particular to a forming and bending machine for making plastic-coated bent pipes. Background technique [0002] The plastic-coated elbow is a composite metal pipe with a metal pipe as the base and a complete set of bending molds for bending. A plastic anti-corrosion layer is welded on the inner surface of the metal pipe by spraying, rolling, dipping, and suction processes, or a plastic anti-corrosion layer is welded on the inner and outer surfaces. No matter what kind of machinery and equipment and pipelines, most of them use elbows, which are mainly used for oil, gas, liquid, etc. [0003] At present, when bending metal pipes before plastic coating treatment, there are the following problems: ① When the existing bending equipment bends metal pipes of the same specification, the bending angle range and bending arc range are relatively small According to the actual use of the metal pipe, it is d...

AI Technical Summary

Problems solved by technology

[0003] At present, when bending metal pipes before plastic coating treatment, there are the following problems: ① When the existing bending equipment bends metal pipes of the same specification, the bending angle range and bending arc range are relatively small According to the actual use of the metal pipe, it is difficult to adjust the bending angle and bending arc of the bending equipment at any time. Adjustment on the basis of bending equipment requires replacement of other bending molds, which will reduce the bending efficiency of metal tubes

[0004] ②The existing bending equipment cannot calibrate the position of the metal tube that has not been bent when bending the metal tube, nor can it limit the position of the metal tube that is being bent. The bending position of the metal pipe is shifted, and the bending shape of the metal pipe is different from the actual bending shape, resulting in poor bending effect of the metal pipe, and the use value of the bent metal pipe is reduced

Images