Short fiber radial orientation reinforced annular tread extrusion molding and prevulcanization integrated device

Abstract

The invention discloses a short fiber radially oriented reinforced annular tread extrusion molding and pre-vulcanization integrated device, which includes an inlet section, a transition section, a split section, a setting section and a pre-vulcanization device. The cylindrical flow channel in the split section first passes through 90 degrees Deformation, the center of the flow channel of the deformed distribution section is provided with a distribution column with a hexagonal cross-section, and the end of the distribution column is connected to the shaping section. Starting from the center, the rubber material is extruded along six runners with equal cross-sections. The runners are opposite to the hexagonal sides. The cross-sectional area of ​​the shunt column is 1 / 2 of the cross-sectional area of ​​the cylindrical structure. There is a pre-vulcanization device for segmented tire tread surface. The device overcomes the technical problem that the short fiber moving direction changes and causes the orientation degree to decrease when the short fiber rubber compound is vulcanized in the tire flexible mold in the prior art, and improves the fiber reinforced tread rubber. degree of radial orientation, and a new method for radial orientation of short fibers was proposed.

Description

technical field [0001] The invention relates to a fiber orientation reinforced remanufactured tire tread extrusion molding and prevulcanization integrated device, in particular to a short fiber radial orientation reinforced annular tread extrusion molding prevulcanization integrated device Background technique [0002] With the rapid development of the automobile industry, my country's annual output of waste tires is also the largest in the world. As solid waste, waste tires are a kind of "black pollution". How to clean and recycle waste tires with high value has become a major problem. At present, the recycling of waste tires mainly includes tire retreading, production of rubber powder, production of reclaimed rubber, and cracking of waste tires. Among them, tire retreading is the preferred way of recycling waste tires, with the advantages of being the most environmentally friendly and most resource-saving, and has become a commonly used method of recycling waste tires in ...

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Problems solved by technology

[0006] The method and principle of radial orientation of short fibers in the above invention patents are all based on the characteristics of rubber extrusion expansion, so that the short fibers in the tread rubber roll along the expansion direction during the expansion process of the rubber material, showing a tendency to tilt , and finally make the radial orientation of the short fibers; but even if the extruded rubber can be better radially oriented, if the general extruded rubber strips in the prior art are to be vulcanized, the extruder needs to be connected to the tire through a pipeline. Mold, the extruded rubber strip passes through the mold sleeve or the upper and lower molds of the tire active mold, and slowly fills the entire tire mold cavity. The short fibers in the rubber material change in the moving direction of the tire active mold, and its orientation state changes. In actual production There is no meaning in it, and it cannot be applied to large-scale industrial production, and the original radial orientation head has high requirements for machining accuracy and high manufacturing cost

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