Production line for rigid polyurethane spraying polyethylene winding heat preservation pipe
A technology of rigid polyurethane and polyethylene, applied to tubular objects, other household appliances, household appliances, etc., to achieve the effects of short production cycle, convenient adjustment and simple process
Inactive Publication Date: 2020-03-17
TIANJIN YUGANG KEEP WARM CONSTR MATERIAL
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Problems solved by technology
In the actual use process, the tube body is to be compressed, there is no pre-extrusion during use
Method used
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Embodiment 1
[0026] Embodiment 1, with reference to figure 1 As shown, a rigid polyurethane sprayed polyethylene winding insulation pipe production line, the production line has a flaw detection repair machine 1, a shot blasting derusting machine 2, a grinding and cleaning machine 3, a surface spraying machine 4, a polyurethane spraying system 5, Polyethylene winding system 6, coating extruder 7, pipe end processing device 8, said wound repair machine 1, shot blasting machine 2, grinding and cleaning machine 3 together constitute the pipe body pretreatment step; said surface spraying Machine 4, polyurethane spraying system 5, and polyethylene winding system 6 jointly form a protective layer spraying mechanism; the coating extruder 7 and pipe end processing device 8 jointly form a repairing finished product mechanism, and the polyurethane spraying system 5 also includes polyurethane Layer rounding device, polyurethane curing platform, the coating extruder 7 is 1 / 5 of the thickness of the pi...
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Abstract
The invention discloses a production line for a rigid polyurethane spraying polyethylene winding heat preservation pipe. The production line is composed of a flaw detection repairing machine, a shot blasting derusting machine, a polishing and sweeping machine, a surface spraying machine, a polyurethane spraying system, a polyethylene winding system, a coating extruder and a pipe end treatment device which are arranged in sequence, wherein the flaw detection repairing machine, the shot blasting derusting machine and the polishing and sweeping machine jointly form a pipe body pretreatment step;the surface spraying machine, the polyurethane spraying system and the polyethylene winding system jointly form a protective layer spraying mechanism; and the coating extruder and the pipe end treatment device jointly form a finished product repairing mechanism. No constraint exists during polyurethane foaming, and the polyethylene winding pipe on the outer layer is wound on the polyurethane foaming layer after polyurethane foaming, so that the problem of excessive mass in the production process is avoided.
Description
technical field [0001] The invention relates to the technical field of heat preservation pipe production, in particular to a rigid polyurethane spray-coated polyethylene winding heat preservation pipe production line. Background technique [0002] The traditional production method of rigid polyurethane insulation pipe is the "pipe-in-pipe" production method. First, the standard polyethylene outer casing is processed by an extruder, and then the rust-removed steel pipe is inserted into the polyethylene outer casing with a support frame. Use pipe plugs to close both ends of the pipe, inject polyurethane raw materials into the annular space, and fill the entire space after polyurethane foaming, then seal the injection hole, remove the pipe plugs, and complete the production of the insulation pipe. This production method has the problem of excess quality. First, the expansion force of the polyethylene outer protective pipe to restrain the foaming of polyurethane during the polyu...
Claims
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IPC IPC(8): B29D23/00
CPCB29D23/001
Inventor 王恒刚王秀华杨喜庆
Owner TIANJIN YUGANG KEEP WARM CONSTR MATERIAL