Continuous production device of steel plastic composite pipe having holed steel skeleton surface coated with binder

A steel-plastic composite pipe, surface coating technology, applied to pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of poor practical application effect, unsafety, and lack of connection strength

Inactive Publication Date: 2006-01-25
甘国工
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The prior art relates to coating or coating the inner and outer walls of steel pipes or aluminum pipes, steel pipes with an adhesive layer and then extruding the polymer layer or bonding the finished polymer pipe with the adhesive layer to form a composite pipe However, this kind of composite pipe is different from the metal skeleton with holes and the composite pipe of the polymer. Although the composite pipe composited with the metal pipe without holes has good pressure bearing capacity and strong anti-corrosion ability, the polymer The linear expansion coefficient of the polymer layer and the metal pipe is an order of magnitude different. When used in a heated environment or a cold environment, the polymer layer will be significantly elongated or shortened compared with the metal pipe in the middle layer, so that the metal pipe at the end of the pipe will be exposed. Anti-corrosion failure, in addition, the connection between the pipe fittings and the pipeline is only connected by a thin layer of polymer on the outer layer. Whether it is a hot-melt connection or a mechanical clamp connection, there is no connection strength. The pressure capacity is not equal, the connection is the weakest and not durable, unsafe, this kind of pipeline is not good in practical application due to the difference in linear expansion coefficient of different orders of magnitude of different materials

Method used

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  • Continuous production device of steel plastic composite pipe having holed steel skeleton surface coated with binder
  • Continuous production device of steel plastic composite pipe having holed steel skeleton surface coated with binder
  • Continuous production device of steel plastic composite pipe having holed steel skeleton surface coated with binder

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Effect test

Embodiment 1

[0056] Figure 1 to Figure 5 , provides the figure of Embodiment 1 of the present invention. According to the composite pipe forming process, there are forming and sizing welding mechanism 1, adhesive coating mechanism 2, extrusion compounding mechanism 3, sizing and cooling forming mechanism 4, and heater 5 for skeleton and / or sticky powder skeleton.

[0057] see figure 2 , the forming and sizing welding mechanism of the cylindrical steel frame is a frame 6, a former forming mechanism 8 that can make the steel plate 7 with holes longitudinally rolled into a cylindrical frame and is composed of multiple forming wheels mounted on the frame, A sizing mechanism 9 composed of multiple sets of fixed wheels, a welding motor 10 and a cylindrical skeleton sizing sleeve 11 that can further accurately shape and calibrate the formed cylindrical skeleton are formed. The powder recovery shield box 12 is arranged in the binder coating mechanism, the fluidized bed 13 positioned in the pow...

Embodiment 2

[0059] Figure 6 Figure 2 of Embodiment 2 of the present invention is given. Embodiment 2 is basically the same as Embodiment 1. The difference is that the front and rear of the adhesive coating mechanism are provided with cylindrical skeleton heaters 5 . The advantages of setting heaters separately can increase the thickness of the coating adhesive so that the coating adhesive can better melt and cover the skeleton, which can increase the preheating capacity of the skeleton, and it is better in the die head of the extrusion composite mechanism. The polymer continuum is formed in the inner and outer layers of the skeleton and bonded or compounded with the binder and the skeleton more firmly.

Embodiment 3

[0061] Figure 7, Figure 8 A schematic structural diagram of Embodiment 3 of the present invention is given. In the present embodiment, there are steel wire helically wound cylindrical steel frame forming and sizing welding mechanism 26, steel wire frame binder spraying mechanism 27, extruding composite mechanism 28 for extruding polymer, and sizing and cooling forming mechanism 29 for composite pipe. The forming and sizing welding mechanism 26 includes a frame 27, a radial pay-off frame 28 located at the front end of the frame, a mandrel 30 containing a cylindrical support electrode 29 mounted on the frame, and an empty sleeve on the mandrel driven by a motor to wind the wire. Rotary disk 31, the welding pad 32 that is driven by the motor to rotate on the mandrel. On the welding pad, the mandrel is the axis of symmetry and there is a pair of positive and negative poles respectively connected to the three-phase power supply 33 on the position corresponding to the conductive ri...

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Abstract

An apparatus for continuously manufacturing the composite steel-plastics pipe whose perforated steel skeleton is coated by adhesive is composed of a shaping-sizing welder unit, adhesive coating unit, steel skeleton heater, extruding out unit with hollow core die and cooling-sizing sleeve, and sizing-cooling unit.

Description

Technical field: [0001] The invention relates to a metal frame with holes as a reinforcing body, and a production device for extruding composite polymer materials on the inner and outer surfaces of the frame to form metal frame-reinforced plastic composite pipes, in particular to a metal frame with holes A continuous production device for plastic composite pipes that are pre-coated with an adhesive layer before the composite material is extruded on the surface. Background technique: [0002] There are many methods and devices for the production technology of steel-plastic composite pipes, as well as corresponding patents, which use a metal skeleton with holes as a reinforcement, and extrude a composite polymer material on the skeleton as a continuum to wrap the skeleton to form a steel-plastic composite pipe. 的报道和公开,如英国专利GB2255、148A92.10.28,中国专利申请号94104509.9、申请号98119383.8、申请号99232026.7申请号99232162.X和99232214.6申请号99114790.1申请号00222720.7和00132035.1申请号99112221.6申请号01113962.5。 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/147B21C37/06B29C47/02
Inventor 甘国工
Owner 甘国工
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