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Steel-plastic composite pipe cutting end surface plastic seal device and application thereof

A technology of steel-plastic composite pipe and cutting end, which is applied in the field of plastic sealing device for cutting end of steel-plastic composite pipe, can solve the problems of weak secondary injection molding and easy falling off, and achieve the effect of smooth port, temperature control and easy temperature

Active Publication Date: 2015-07-08
MAANSHAN HONGLI RUBBER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem in the prior art that the secondary injection molding is not firm and easy to fall off when the plastic sealing of the cut end face of the steel-plastic composite pipe is cut, the present invention provides a plastic sealing device for the cut end face of the steel-plastic composite pipe and its application

Method used

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  • Steel-plastic composite pipe cutting end surface plastic seal device and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, a steel-plastic composite pipe cutting end plastic sealing device in this embodiment includes an outer air bag 1, an inner air bag 2 and a plastic ring 3, and also includes a heater 4, and both the outer air bag 1 and the inner air bag 2 are provided with valves 7 , the outer airbag 1 is in the shape of a ring, with an inner diameter of 150 mm. When in use, the outer wall of the plastic layer 6 of the composite pipe is sleeved on the outer layer of the steel-plastic composite pipe; the section of the inner airbag 2 is "T" shaped, and the top "T" head is round Cover-shaped structure with a cylindrical air cavity with an outer diameter of 140mm at the lower part; the plastic ring 3 is a ring-cylindrical structure with an outer diameter of 150mm and an inner diameter of 140mm; the heater 4 is an electromagnetic heater, and its coil surrounds the outer wall of the outer airbag 1 .

[0040] A steel-plastic composite pipe cutting end face plastic s...

Embodiment 2

[0048] A steel-plastic composite pipe cutting end face plastic sealing device of this embodiment has the same basic structure as that of embodiment 1, the difference is that: the outer air bag 1 and the inner air bag 2 are rubber air bags resistant to high temperature aging; the plastic ring 3 is able to withstand a certain high temperature Non-deformable tetrafluoroplastic ring; the heater 4 is a high-frequency heater, and spirally hovers on the outer wall of the outer airbag 1, and its heating head is in the shape of a conductive metal strip spirally surrounding it, which has a better heating effect and can increase the heating speed .

[0049] A kind of steel-plastic composite pipe cutting end face plastic sealing device of this embodiment is applied to the steel-plastic composite pipe after the fixed-length cutting of the double-layer structure whose outer layer is the plastic layer 6 of the composite pipe and whose inner layer is the steel core layer 5 of the composite pip...

Embodiment 3

[0052] The plastic-sealing device for cutting end faces of steel-plastic composite pipes in this embodiment has the same basic structure as that of embodiment 2, the difference being that two sets of the device simultaneously plastic-seal the cut end faces of both ends of steel-plastic composite pipes.

[0053] The plastic sealing device for cutting the end face of a steel-plastic composite pipe of this embodiment is applied to a steel-plastic composite pipe with a composite pipe plastic layer 6 inside and outside, a three-layer structure of a composite pipe steel core layer 5 in the middle, and a fixed-length cut. The basic steps are the same as those in Example 2, except that two sets of the device are plastic-sealed at the same time, and the compressed air pressure is controlled at 0.15Mpa in step B; the heating time in step C is 10 seconds; the cooling time in step D is 8 minutes.

[0054] In this embodiment, a cutting end face plastic sealing device of a steel-plastic comp...

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Abstract

The invention discloses a steel-plastic composite pipe cutting end surface plastic seal device and an application thereof, and belongs to the field of the production of a steel-plastic composite pipe cutting end surface plastic seal. The steel-plastic composite pipe cutting end surface plastic seal device comprises an outer airbag, an inner airbag and a plastic ring, and also comprises a heater, wherein the outer airbag and the inner airbag are respectively provided with an air valve, the outer airbag is in a loop shape, the outer air valve sleeves the outer wall of a composite pipe plastic layer of the steel-plastic composite pipe outer layer when in use, the cross section of the inner airbag is in a T shape, and the inner airbag is of a structure with a T-shaped head circular cover on the top and a cylindrical air cavity in the lower part; and the plastic ring is an annular cylindrical structure; a heater coil surrounds the outer wall of the outer airbag. By utilizing the plastic seal device, the seal work of a steel-plastic composite pipe is completed by virtue of steps of assembling, pressurizing, heating, cooling and pressure relief. According to the plastic-seal device and the application thereof, a purpose of firmness in injection molding and unlikeliness in dropping can be realized; and moreover, the steel-plastic composite pipe cutting end surface plastic seal device has advantages of simple process, less investment, low energy consumption, attractive appearance, low cost and the like.

Description

technical field [0001] The invention relates to the field of plastic seal production of cut end faces of steel-plastic composite pipes, in particular to a plastic seal device for cut end faces of steel-plastic composite pipes and its application. Background technique [0002] The steel-plastic composite pipe has the characteristics of hygienic, non-scaling, corrosion-resistant, and non-rusting plastic pipes, and has the advantages of high pressure bearing and impact resistance of steel pipes. The steel-plastic composite pipe adopts steel plate punching, crimping, and argon arc welding to form a perforated steel pipe. Solved the technical problem of steel-plastic separation. [0003] After the steel-plastic composite pipe is extruded and produced, it needs to be cut to length, and after cutting, the exposed iron end face should be plastic-sealed. In the past, the traditional process was to use the end faces of both ends of the steel-plastic composite pipe after being cut to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C57/10
Inventor 高强黄良根高虹常勤辉刘明保
Owner MAANSHAN HONGLI RUBBER PROD
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