Tire large-proportion radial expansion and shrinkage forming drum device

Abstract

The invention discloses a tire large-proportion radial expansion and shrinkage forming drum device, and relates to the technical field of tire manufacturing. The device comprises an inner tile assembly, an outer tile assembly and a driving system, the driving system comprises an axial moving device, an inner tile driving system and an outer tile driving system; the axial moving device can be arranged in a middle shaft in a sliding mode, the axial moving device is connected with an outer tile radial supporting system through an outer tile driving system, the outer tile assembly is arranged on the outer tile radial supporting system, and the axial moving device can drive the outer tile radial supporting system and the outer tile assembly to move in the radial direction; the inner tile assembly comprises an inner tile middle assembly and an inner tile drum shoulder assembly, the inner tile middle assembly and the inner tile drum shoulder assembly are arranged on the inner tile supporting system, the axial moving device is connected with the inner tile supporting system through the inner tile driving system, the axial moving device can drive the inner tile middle assembly to move in the radial direction through the inner tile driving system, and the inner tile drum shoulder assembly is driven to move radially and axially at the same time. According to the device, the expansion-shrinkage ratio of a forming drum is increased, and the forming requirement of an aircraft tire is met.

Description

technical field [0001] The invention relates to the technical field of tire manufacturing, in particular to the technical field of manufacturing bias-ply aviation tires and radial aviation tires, in particular to a large-ratio radial expansion-contraction forming drum device for tires. Background technique [0002] For the one-stage forming of bias aviation tires and radial aviation tires, folding forming drums are generally used, and tile-removing heads are used for small-sized tires (usually the diameter is less than 200mm). [0003] The tile unloading machine head has difficulty in unloading the tire and long molding cycle. In addition, when unloading the tire, it is necessary to use a heavy object to knock the drum block from the outside or lightly drop the drum block to the ground to remove the drum block. After a long time, there will be problems of deformation, dislocation and large gaps between the drum blocks, and there will be many pits on the surface. [0004] Du...

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