Continuous production device for outer plastic layer of unequal diameter pipe

Abstract

The invention relates to the technical field of pipe plastic layer forming, and provides a continuous production device for the outer plastic layer of pipes with unequal diameters, including several conveying mechanisms, extruders, fixed-point pressing mechanisms and moving pressing mechanisms arranged on the same straight line The conveying mechanism includes two support adjustment units; the present invention realizes that in the conveying process, the central axis of the pipe body remains horizontal through the floating support of the conveying mechanism; The protection level of unequal diameter pipes has been upgraded. At the same time, a parameter adjustment assembly is also provided; the parameter adjustment assembly is provided with a steering gear that drives the rotation of the rotating column; the two steering gears in each conveying mechanism are respectively connected to an adjusting gear; the adjusting gear sleeve is coaxially connected to an adjusting worm gear; each conveying The adjusting worm gears in the mechanism are all driven and connected to the same horizontally arranged adjusting worm. The synchronous adjustment of the rotation angles of all idlers is realized, and the parameter adjustment consistency is good.

Description

technical field [0001] The invention belongs to the technical field of pipe plastic layer forming, and in particular relates to a continuous production device for plastic layers outside pipes with different diameters. Background technique [0002] Large steel pipes usually require protective treatment to increase their service life. At present, the commonly used protective treatment technology is spraying protective paint or wrapping plastic film (such as polyethylene or polyurethane). [0003] These protective treatments usually require forward transport while the pipe is rotating. It is easy to implement for ordinary pipes with regular shape. But for unequal-diameter pipes like socket pipes (such as the disclosed structure of CN201820747877.0 patent), due to the existence of equal-diameter parts and unequal-diameter parts (such as the socket part of socket pipes), it is difficult to accomplish. [0004] The patent with application number 201721028672.9 discloses a devi...

AI Technical Summary

Problems solved by technology

However, the structure of the equipment is complex, especially the forward mechanism of the lower layer has a large load, and the practicability is extremely poor

[0005] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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