Elastic expansion pipe and production technology thereof

Abstract

The invention belongs to the technical field of expansion pipes, and relates to an elastic expansion pipe and a production technology thereof. The elastic expansion pipe comprises an elastic pipe made of an elastic body; two or more spiral line layers or woven mesh layers which can expand and contract along with expanding and contracting of the elastic pipe are arranged in the elastic pipe; and when the spiral line layers are arranged, the spiral directions of every two adjacent spiral line layers are opposite, the outer diameter of the spiral line layer or the woven mesh layer located on the outermost layer is smaller than the outer diameter of the elastic pipe, and the inner diameter of the spiral line layer or the woven mesh layer located on the innermost layer is smaller than the inner diameter of the elastic pipe. According to the production technology, the inner spiral line layer or the inner woven mesh layer is arranged on the outer surface of an inner elastic pipe body, a first elastic body layer is formed on the outer surface of the inner spiral line layer or the inner woven mesh layer, then, the second spiral line layer or the second woven mesh layer is arranged, a second elastic body layer is formed on the outer surface of the second spiral line layer or the second woven mesh layer, the rest can be done in the same manner, and an outer elastic pipe layer is formed on the outermost layer. The elastic expansion pipe has the advantages of being low in weight, large in expansion amount, high in tensile strength, and long in service life.

Description

technical field [0001] The invention belongs to the technical field of telescopic tubes, in particular to an elastic telescopic tube and a production process thereof. Background technique [0002] The telescopic tube can shrink when not in use and can be extended when in use. It is very popular among related users such as flushing tubes for vehicles or households. It solves the problem that the long water tubes currently used are piled up on the ground and easily cause kinks and tripping people passing by. , or being stepped on to shorten the service life of the water pipe, etc., the structure of the more common telescopic pipe on the market is: the latex pipe is covered with a cloth pipe, the length of the latex pipe is shorter than the length of the cloth pipe, and the cloth pipe is stacked on the latex Outside the pipe, the cloth pipe can be extended axially with the extension of the latex pipe, and radially supported with the expansion of the latex pipe to limit the unli...

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Problems solved by technology

[0002] The telescopic tube can shrink when not in use and can be extended when in use. It is very popular among related users such as flushing tubes for vehicles or households. It solves the problem that the long water tubes currently used are piled up on the ground and easily cause kinks and tripping people passing by. , or being stepped on to shorten the service life of the water pipe, etc., the structure of the more common telescopic pipe on the market is: the latex pipe is covered with a cloth pipe, the length of the latex pipe is shorter than the length of the cloth pipe, and the cloth pipe is stacked on the latex Outside the pipe, the cloth pipe can be extended axially with the extension of the latex pipe, and radially supported with the expansion of the latex pipe to limit the unlimited radial expansion of the latex pipe; For example, CN 203836417 U discloses "A Novel Telescopic Tube", which includes an outer tube and telescopic ribs arranged in the inner cavity of the outer tube. The length of the outer tube is smaller than the length of the outer tube, and the outer tube can be axially extended or contracted with the expansion and contraction of the telescopic ribs. Its disadvantages are: first, the cloth pipe becomes heavy after being exposed to water and is prone to bacteria; second, the cloth pipe is also easy to entrain The soil is not easy to clean; the third is that the axial expansion and contraction is small; the fourth is that the outer tube made of cloth is not easy to fold, and it takes up a large volume when stored

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