A method and device for plastically sealing the end face of a steel-plastic composite pipe
A pipe and pipe end technology, which is applied in the field of plastic-sealed steel-plastic composite pipe end faces, can solve problems that are not suitable for factory production and application, and achieve low-cost and high-efficiency effects
Inactive Publication Date: 2019-04-12
ハルビンスターウェイマシーナリーマニュファクチャリングカンパニーリミテッド
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Problems solved by technology
This method is not suitable for factory production and application, and is mostly used for the disposal of broken pipes at construction sites
Method used
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[0020] figure 1 Shown is a kind of steel-plastic composite pipeline 1 that needs to be sealed in plastic according to the present invention. The pipeline 1 is composed of plastic and reinforced steel structure, and the reinforced steel structure 2 is composited inside the plastic pipe wall. After a long cut, the end face will have exposed steel. As step one of the plastic sealing method of the present invention, Figure II It shows the use of a small-sized extruder 3, and a die head 4 made of polytetrafluoroethylene is fixed at the outlet of the extruder material channel. The die head 4 is provided with an arc that is the same as the curvature of the pipe wall but slightly larger than the thickness of the pipe wall. Shaped groove, the plane where the centerline of the groove is perpendicular to the axis of the extruder 3 and the pipeline 1, and the center of the groove centerline is on the axis of the pipeline 1. Insert the end face of the pipe 1 into the arc-shaped groove o...
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The invention provides a method for plastic packaging of the end face of a steel-plastic composite pipeline. The method comprises the steps that a die head is connected to an outlet of a small extruder, and the end face of the pipeline is inserted into an arc channel of the die head to form an arc tunnel; an air heater is started, and high-temperature hot air is used for heating the end face of the pipeline to a status that the plastic surface of the end face is suitable for welding; the pipeline is rotated at a uniform velocity, and when the initial heated point of the end face of the pipeline is rotated to the intersection of the end face of the pipeline and the axis of the extruder, the small extruder is started to injecting plastic into the arc tunnel; after the pipeline is rotated by one circle and a circle of complete plastic package is formed at the end of the pipeline, the pipeline stops rotating, the small extruder and the air heater stop working and recede axially, and the die head is completely separated from the end of the pipeline; and a pipeline end plastic package structure is kept to be naturally cooled to a room temperature status. A device for implementing the method comprises the small extruder, the die head and the air heater.
Description
[0001] technical field [0002] The invention relates to a method and a device for plastic-sealing the end face of a steel-plastic composite pipe, in particular to a method and a device for plastic-sealing the end face of a pipe with reinforced structures such as steel wire, steel mesh or steel plate exposed after cutting to length. Background technique [0003] In the production process of steel-plastic composite pipes, the pipes are produced continuously, and the pipes need to be cut to length according to the restrictions of transportation conditions. Corrosion of steel requires plastic sealing of the pipe end faces of exposed steel. Patents such as CN2184834Y and CN1632360A disclose several steel-plastic composite pipes and production methods thereof. The steel reinforcement structure of the steel-plastic composite pipe similar to the above-mentioned patent is coated inside the plastic, and it is usually continuously produced by extrusion, and it is necessary to plastic s...
Claims
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IPC IPC(8): B29C57/10
CPCB29C57/10
Inventor 何轶良
Owner ハルビンスターウェイマシーナリーマニュファクチャリングカンパニーリミテッド