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Thermal contraction inflation continuous expanding device

A heat-shrinkable tube and expansion device technology is applied in the processing field of radiation cross-linked heat-shrinkable tubes, which can solve the problems of low production efficiency and poor product quality, and achieve the effects of improving production efficiency, small longitudinal shrinkage and reducing friction.

Inactive Publication Date: 2009-10-28
CHINA KINWA HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an inflatable expansion method for heat shrinkable tubes, which overcomes the problems of low production efficiency and poor product quality in the negative pressure expansion processing method, and improves the production quality and processing speed of heat shrinkable tubes

Method used

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  • Thermal contraction inflation continuous expanding device
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Experimental program
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Effect test

Embodiment 1

[0012] according to figure 1 As shown, using the principle of high-pressure gas-assisted forming, heat the heat-shrinkable tube at 80-120°C, feed the material at a speed of 2-10 m / min, and introduce high-pressure gas of 0.03-0.05 Mpar to be inflated and formed by high-pressure gas in the expansion mold. After cooling and shaping treatment at 10-25°C, the expansion production process of the heat-shrinkable tube is completed through heating, expansion, cooling, and traction.

Embodiment 2

[0014] On the platform 1 of the continuous expansion machine, a guide roller 2 for heat-shrinkable tubing is provided, and a traction mechanism 4, a water bath box 6, an oil bath box 7, an expansion mold box 9, and a cooling and setting room 10 are arranged in sequence between them, wherein the motor 3 and The traction guide mechanism 4 is connected to drive the heat-shrinkable tube 11 to feed materials. The water bath box 6 and the oil bath box 7 are provided with heating devices, and the heat-shrinkable tube 11 can be heated in a gradient in the box. Pipe expansion mold 8, both ends are sealed and connected with oil bath box 7 and cooling and shaping room 10 through sizing outlet connector 12, control mechanism 5 controls water bath box 6, oil bath box 7 and traction mechanism 4 through corresponding lines End connection, control the feeding of heat shrinkable tubes, heating of water and oil baths, and gas-assisted molding of high-pressure gases.

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Abstract

The invention provides a method and device for inflating and continuously expanding a heat-shrinkable tube. A heat-shrinkable tube guide roller is arranged on the expansion machine platform, and a traction mechanism, a water bath box, an oil bath box, an expansion mold box, and a cooling and setting room are sequentially arranged between them. , the control mechanism is connected with the water bath box, the oil bath box and the control end of the traction mechanism through the corresponding lines. The expansion mold box is equipped with a heat shrinkable tube expansion mold, and the two ends are connected with the oil bath box and the cooling and shaping through the sizing outlet connector. chamber sealed connection. Using the principle of high-pressure gas-assisted forming, adopting the positive pressure inflation expansion method, the heat-shrinkable tube is heated and softened, and the high-pressure gas is introduced into the expansion mold to be inflated and formed by high-pressure gas, and then cooled and shaped, through heating, expansion and cooling. , traction, and complete the expansion production process of the heat shrinkable tube. The invention reduces the friction between the pipe material and the expanded sizing, and the longitudinal shrinkage rate of the product is less than 10%. The production efficiency is improved, and the expansion speed can reach more than 2-10 m / min.

Description

Technical field: [0001] The invention relates to expansion technology and production equipment of heat-shrinkable tubes, discloses a method for continuously expanding heat-shrinkable tubes with air, and also provides an expansion device suitable for the method, belonging to the technical field of radiation-crosslinked heat-shrinkable tube processing. Background technique: [0002] At present, in the expansion process of radiation cross-linked heat-shrinkable tubes, negative pressure expansion processing technology is often used. In the expansion mold, the expansion of the heat-shrinkable tube is realized by evacuating the gas outward. The wall phenomenon is serious, and the longitudinal expansion rate of the processed pipe reaches more than 20%, which is 10% smaller than the actual product. The production speed of this method is also relatively slow, and can only reach about 0.3 m / min. Invention content: [0003] The invention provides an inflatable expansion method for he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C51/10B29C51/18B29C51/30B29C51/42
Inventor 徐义全李成维朱徇曼朱晓娜高飞王明志
Owner CHINA KINWA HIGH TECH
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