A cloth-free rubber air-guiding long bellows and its forming device and forming method

Abstract

The invention discloses a cloth-free rubber gas guiding long corrugated pipe as well as a forming device and a forming method thereof. The cloth-free rubber gas guiding long corrugated pipe comprises a corrugated pipe body; the corrugated pipe body comprises a pipe body crest and a pipe body trough; the pipe body crest and the pipe body trough together form a corrugated section of the corrugated pipe; and the tail end of the left side of the corrugated pipe body is a left straight section while the tail end of the right side is a right straight section. The inner and outer layers of the gas guiding long corrugated pipe are not wrapped by cloth, and the defects such as sand holes and small cracks in the outer surface can be directly observed by eyes, thereby being convenient and quick and avoiding the risk in use; the pipe body is very soft and can be bent freely according to the using conditions and is flexible to use; the pipe has excellent air tightness, experiences little ventilation resistance and can realize normal ventilation when being bent by 180 degrees; the vulcanization forming is easier and the cost is lower; and the gas guiding long corrugated pipe can be used as a gas guiding pipe matched with a gas mask.

Description

technical field [0001] The invention relates to a non-cloth rubber air-conducting long bellows and its forming device and forming method, especially suitable for being able to be bent at will according to the usage conditions and flexibly used, and can be used as a rubber air-conducting bellows for gas masks, belonging to Technical field of rubber products. Background technique [0002] The more common corrugated pipes on the market are plastic corrugated pipes, because plastic corrugated pipes are easy to injection mold. Some rubber bellows are wrapped with cloth on the outer layer of rubber, and the rubber and cloth are vulcanized together, and some have a layer of cloth inside the rubber as a skeleton layer. Although the rubber bellows with cloth has high strength, this method adds one or more processes, which is more complicated and costly. However, the rubber bellows wrapped in cloth on the outer layer cannot be directly inspected by the naked eye for defects such as ...

AI Technical Summary

Problems solved by technology

Although the rubber bellows with cloth has high strength, this method adds one or more processes, which is more complicated and costly

However, the rubber bellows wrapped in cloth on the outer layer cannot be directly inspected by the naked eye for defects such as blisters and small cracks on the outer surface, which may cause air leakage due to appearance defects and increase the risk of use; If the rubber material is hard, it cannot be bent and used at will. If the rubber material is soft, it will easily form a dead space at the bend and cannot conduct gas normally.

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