Self-melting filling type steel plastic composite pipe end sealing machine and sealing method thereof

Abstract

The invention discloses a self-melting filling type steel plastic composite pipe end sealing machine. The machine comprises a clamping mechanism, an integrated heating, cooling and sealing mechanism, and a first oil cylinder or a first cylinder for driving the integrated heating, cooling and sealing mechanism to move to a pipe end so as to coat the pipe end in a pipe end sealing cavity of the integrated heating, cooling and sealing mechanism, wherein a pipe sealing ring is preset in the pipe end sealing cavity. A self-melting filling type steel plastic composite pipe end sealing method comprises the steps of: pipe clamping and limiting, feeding of the pipe sealing ring, pipe end heating and sealing, and cooling of the sealed pipe end. The self-melting filling type steel plastic composite pipe end sealing machine and the sealing method thereof can keep the wall thickness of the pipe end invariable; the end part of the sealed pipe accords with the standard requirements, and can be connected with a stand pipe and a pipe fitting; the machine and the method can realize the heating and cooling integration; and in cooling, peripheral equipment is not needed, and the self-melting filling type steel plastic composite pipe end sealing machine can be used for realizing both heating function and cooling function.

Description

technical field [0001] The invention relates to the technical field of steel-plastic composite pipe end sealing, in particular to a self-melting filling type steel-plastic composite pipe end sealing machine and a sealing method thereof. Background technique [0002] After the continuously formed steel-plastic composite pipe is cut to a certain length, there is a phenomenon of steel wire leakage on the cut-off surface. In order to ensure the performance of the steel-plastic composite pipe, the cut-off surface must be sealed, which is called the steel-plastic composite pipe in the industry. The pipe ends are sealed to seal the steel wire in the plastic layer. [0003] At present, for the sealing of the steel-plastic composite pipe end, there are mainly the following sealing methods: 1. The end of the pipe is sealed by injection molding through an injection molding machine; 2. The sealing is performed by butt welding; 3. The inner and outer molds of the sealing machine are used...

AI Technical Summary

Problems solved by technology

However, when the inner and outer molds of the sealing machine are used to extrude and heat the inner and outer surfaces of the pipe, since the wall thickness of the extruded part of the end of the pipe is thinned after sealing, the warp and weft at the sealing position of the steel-plastic composite pipe are easily exposed. Due to the phenomenon of sealing failure, and because the wall thickness of the pipe sealing end is thinned, when the pipe is connected with standard pipes or fittings, there will be a large gap at the joint, which directly affects the connection and use of the pipe.

And when heating and sealing, although the sealing machine is equipped with a structure to heat the pipe end, after sealing, when cooling the sealed pipe end, it needs to use peripheral cooling equipment for cooling, instead of heating and cooling through the sealing machine Integrated, that is to say, the existing sealing machine does not have the function of both heating and cooling

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