One-time formed rubber double-face rubber hose and process thereof

Abstract

The invention discloses a one-time formed rubber double-face rubber hose and a process thereof in the technical field of rubber pipelines. The one-time formed rubber double-face rubber hose comprises an inner rubber layer. A reinforcement layer is arranged on the outer wall of the inner rubber layer. An outer rubber layer is arranged on the outer wall of the reinforcement layer. Through one or two extruders and a co-extrusion die, the inner rubber layer and the outer rubber layer are extruded on a strip blank once, the procedures that inner pipe extrusion is conducted, an inner pipe penetrates into the strip blank, outer pipe extrusion is conducted, and an outer pipe penetrates into a rolled hollow semi-finished product are completed, and the procedure of strip overturning is omitted; and then the one-time extruded semi-finished product is pulled to pass a cooling water tank area and hole rolling equipment and is pulled to a vulcanization area for vulcanization, and after vulcanization, direct pressure testing and rolling are conducted. The automation degree and production efficiency are high, the productivity is large, the defective rate is low, and the defect of nonuniform partial stretching wall thickness of a rubber hose due to pipe penetrating is overcome. Due to the fact that through the process, the inner rubber layer and the outer rubber layer are extruded once, rubber materials are extruded from outside to inside, the inner rubber layer and the outer rubber layer are connected with each other in strip blank gaps through rubber threads, the integration is high, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of rubber pipes, in particular to a one-time molding rubber double-sided rubber hose and its technology. Background technique [0002] Rubber double-sided rubber hose has incomparable advantages of other materials, such as the characteristics of rubber hose are physiologically inert, durable ultraviolet light , ozone resistance, high and low temperature resistance (-80 to 300 degrees), high transparency, strong resilience, permanent compression resistance, oil resistance, stamping resistance, acid and alkali resistance, wear resistance, flame retardancy, voltage resistance, conductivity and other properties. It is often used in industries such as oil transportation, natural gas transportation, chemical transportation and sewage treatment. In the process of passing through the inner and outer tubes in the existing manufacturing process of rubber double-sided rubber hoses, since the extruded rubber tubes are ...

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of one-time molding rubber double-sided rubber hose and its technology, to solve the problems caused by extrusion in the process of passing through the inner and outer tubes in the production process of the existing rubber double-sided rubber hose proposed in the above-mentioned background technology. The rubber tube is unvulcanized and the material is soft. When it is worn into the belt blank, it will be deformed and elongated due to the increasing resistance, resulting in local thinning of the rubber tube and uneven thickness, which will affect the service life and quality of the product. In addition, the inner and outer layers are It is directly bonded to the blank, the inner and outer layers are not related, and the integrity is not good

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