Socket tube plastic layer winding forming device

Abstract

The invention relates to the technical field of pipe plastic layer forming, and provides a socket pipe plastic layer winding and forming device, including a conveying mechanism, an extruder, a fixed-point pressing mechanism and a moving pressing mechanism, which are used for rolling plastic in a molten state, Make it closely fit on the reducing part of the outer wall of the tube, and form a protective layer here. Thereby, the present invention realizes that the central axis of the pipe body is always kept horizontal during the conveying process through the floating support of the conveying mechanism; Forming of the plastic protective layer at the socket position. The invention realizes the continuous production of the plastic protective layer winding molding of the unequal-diameter pipe, upgrades the protection level of the unequal-diameter pipe, improves the quality of the pipe and prolongs its service life.

Description

technical field [0001] The invention belongs to the technical field of pipe plastic layer forming, and in particular relates to a plastic layer winding and forming device for socket pipes. Background technique [0002] Forming a plastic layer such as polyethylene or polyurethane over the pipe is considered the best form of corrosion and thermal insulation. [0003] Its molding method usually adopts the "one-step" molding method of steel pipe anti-corrosion and heat insulation layer (Chinese patent CN85102477B). Foam molding, while using the correction device to adjust the concentricity of the foam layer and the steel pipe, the applicable pipe diameter range is less than φ630. [0004] Or use a prefabricated polyethylene shell, put the steel pipe into the polyethylene shell through the pipe-through platform, and pour foam into the uniform cavity formed between the steel pipe and the polyethylene shell through a high-pressure foaming machine to form an anti-corrosion and heat...

AI Technical Summary

Problems solved by technology

[0005] It is easy to implement for ordinary pipes with regular shape, but for non-uniform pipes like socket pipes (such as the structure disclosed in CN201820747877.0 patent), due to the existence of equal-diameter parts and unequal-diameter parts (such as The socket part), so the existing equipment can not achieve winding protection, only spraying protection, low protection level, poor effect

[0006] 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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