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Fluoroplastic-coated hose forming process and device

A molding device and molding process technology

Pending Publication Date: 2020-12-18
宁波赛瑞思材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is mainly to solve the problem of difficult processing of fluorine-coated hoses, how to process thinner fluorine-coated plastic hoses with high quality and low yield

Method used

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  • Fluoroplastic-coated hose forming process and device

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0031] Specific embodiment 1: the temperature of the oven is heated to 80°; the wall thickness of the fluorine plastic hollow hose is 1.5mm, and the inner diameter is 15mm. The connection is closed, the other end is sealed with a plug, and the pressure is increased to 0.5Mpa; after the fluoroplastic hose is heated in the oven for 3 minutes, the hose is pulled into the cooling box by the tractor, and the cooling box is filled with normal temperature water; at this time The inner diameter of the fluoroplastic hose becomes 17mm and can be maintained; put the silicone hose with an outer diameter of 15mm into the fluoroplastic hose; put the fluoroplastic hose into the 80° oven for three minutes and then take it out. Because the fluoroplastic hose has the characteristics of expansion and reduction, after 24 hours of storage, the inner diameter of the fluoroplastic hose becomes 15mm again. At this time, the fluoroplastic hose is finished processing. It can be seen that the matching g...

specific Embodiment 2

[0032] Specific embodiment 2: the temperature of the oven is heated to 120°; the wall thickness of the fluorine plastic hollow hose is 2.5mm, and the inner diameter is 25mm, the output end of the air valve machine is connected to the adapter, and one end of the fluorine plastic hose is connected to the adapter The connection is closed, the other end is sealed with a plug, and the pressure is increased to 0.5Mpa; after the fluoroplastic hose is heated in the oven for 3 minutes, the hose is pulled into the cooling box by the tractor, and the cooling box is filled with normal temperature water; at this time The inner diameter of the fluoroplastic hose becomes 28mm and can be maintained; put the silicone hose with an outer diameter of 25mm into the fluoroplastic hose; put the fluoroplastic hose into the 120° oven for three minutes and then take it out. Because the fluorine plastic hose has the characteristics of expansion and reduction, after 24 hours of storage, the inner diameter...

specific Embodiment 3

[0033] Specific embodiment 3: the temperature of the oven is heated to 180°; the wall thickness of the fluorine plastic hollow hose is 3.5 mm, and the inner diameter is 37 mm. The connection is closed, the other end is sealed with a plug, and the pressure is increased to 0.5Mpa; after the fluoroplastic hose is heated in the oven for 3 minutes, the hose is pulled into the cooling box by the tractor, and the cooling box is filled with normal temperature water; at this time The inner diameter of the fluoroplastic hose becomes 40mm and can be maintained; put the silicone hose with an outer diameter of 37mm into the fluoroplastic hose; put the fluoroplastic hose into the 180° oven for three minutes and then take it out. Because the fluorine plastic hose has the characteristics of expansion and reduction, after 24 hours of storage, the inner diameter of the fluorine plastic hose becomes 37mm. At this time, the fluorine plastic hose is finished processing. It can be seen that the mat...

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Abstract

By utilizing the fact that fluoroplastics can return to the original size after being heated and expanding, a cooled expanded fluoroplastic hose is heated by a drying oven, then a rubber hose is plugged into the fluoroplastic hose, a fluoroplastic-coated hose is achieved, and very high efficiency is achieved; and meanwhile, gas is added into the fluoroplastic hose, clearance fit between the two hoses is very perfect in the processing process, the problem of processing of small-size fluoroplastic-coated hoses is also solved, and the product quality is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of sealing material processing, and in particular relates to a processing method for covering a fluoroplastic rubber hose. [0002] technical background [0003] Coated O-ring, also known as "fluorine-coated O-ring", is a sealing product made of FEP or PFA special high-temperature-resistant fluoroplastic, and the internal coating of elastomer (fluorine rubber / silicone) is compounded by special technology. Combining the advantages of Teflon and rubber, it is both corrosion-resistant and elastic. [0004] Fluorine-coated O-rings have excellent corrosion resistance and are suitable for almost all chemical media. [0005] At the same time, the fluorine-containing O-ring has excellent sealing performance. Rubber O-rings are easy to wear, have poor chemical corrosion resistance and gas permeability resistance. Pure Telfon O-rings have higher hardness and can resist compression but have poor elasticity; the coated...

Claims

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Application Information

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IPC IPC(8): B29C55/24B29C35/02B29C35/16
CPCB29C35/02B29C35/16B29C55/24
Inventor 王圈库
Owner 宁波赛瑞思材料科技有限公司
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