Production technology of coreless wound hose

Abstract

The invention discloses a non-core winding rubber hose production process comprising the following steps: firstly rubber stuff is prepared; when the inner rubber is extruded out, an axial yarn is attached on a siphonula which takes the axial yarn into a winding machine; after the inner rubber is extruded out, the outer rubber is extruded out; later the siphonula is cooled after the outer rubber is extruded out, then is wounded on a metal disk after a release agent is sprayed, and then thrown into a vulcanizing boiler for vulcanization, finally a finished product is obtained after the vulcanization is finished. The invention changes the existing non-core winding hose production process; as the axial yarn is attached on the siphonula with the inner rubber extruded out, part of the pull fore of the siphonula is distributed, and the tensile deformation of a hot siphonula is reduced, thereby ensuring the dimensional stability of the siphonula. The process has the advantages of simple method, few production process, low cost, high production efficiency, good implementation effect, etc.

Description

technical field [0001] The invention relates to a production process of a rubber hose, in particular to a production process of a coreless winding rubber hose. Background technique [0002] At present, the spiral rubber hose, that is, the rubber hose with the skeleton layer fiber as the winding structure, is the most important rubber hose in the world today. The soft core method is generally used in the production process of the hose, that is, the corresponding soft core is prepared according to the inner diameter of the hose. (Equivalent to the inner mold), the soft core can be rubber, plastic or other flexible materials, and its production process is: soft core preparation, soft core coating isolation extrusion, inner rubber extrusion, fiber winding, outer rubber extrusion, trademark printing Cooling, disc drum, vulcanization, soft core demoulding, head cutting, inspection, packaging and storage; the winding rubber hose can also adopt the coreless production process, that ...

AI Technical Summary

Problems solved by technology

However, the coreless production process also has disadvantages, that is, when the inner rubber is extruded, because the tube embryo is at a certain temperature (about 70-80°C), the plasticity is very large, and the tube embryo must be subjected to a certain traction force when it enters the winding machine for winding. It is very easy to deform, especially when the traction speed fluctuates, it will cause the tube embryo to become longer and thinner, the production is not easy to control, and the final product size fluctuates greatly