Production method for wound and attached steel wire crown band ply of all-steel radial-truck meridian tire

Abstract

The invention relates to a production method for a wound and attached steel wire crown band ply of an all-steel radial-truck meridian tire, and belongs to the technical field of tire production. During the production of a belt ply of an all-steel radial-truck tire, two layers of steel wire crown band plys are wound at the two sides of the belt ply, and then are attached to the tire surface part; the width of the steel wire crown band ply is the width of two or more steel wires, and the steel wires are unwound by a spindle frame; the wound and attached steel wire crown band ply is rubberized and extruded in a previous procedure, and is spirally wound on an unwinding material roll. Compared with a traditional attached zero belt ply, the steel wire crown band ply produced by the invention has no lap joint, and the invention increases the uniformity of the tire, ensures the feasibility of tire retreading and pattern reincising, provides relatively uniform impression, ground pressure distribution and abrasion, allows the steel wire cord structure to be not limited to a highly-elongated cord, provides relatively uniform and stable tension control, and ensures the stability of various performance of the tire. Compared with the process for spirally winding a single steel wire on the belt ply, the production efficiency of the invention is increased by two times, and the winding stability is high.

Description

technical field [0001] The invention belongs to the technical field of tire molding and manufacturing, in particular to a molding process method for winding and laminating steel wire cap strips on a belt layer. Background technique [0002] At present, the belt bonding process of radial truck tires has gradually formed a three-layer or four-layer belt plus zero-degree belt structure or a four-to-five-layer belt structure. For the three-layer or four-layer belt layer plus zero-degree structure, the current existing process method is to extrude a zero-degree belt layer with a width of about 30 mm through the zero-degree belt lamination production line according to the process requirements, and paste two layers on the molding machine. Then cut the lap. Due to the zero-degree joint lap problem, its negative effects are: the uneven point of stiffness increases at the lap joint, which is not conducive to the uniformity of the tire; it is easy to cause discontinuous tire contact ...

AI Technical Summary

Problems solved by technology

Due to the zero-degree joint lap problem, its negative effects are: the uneven point of stiffness increases at the lap joint, which is not conducive to the uniformity of the tire; it is easy to cause discontinuous tire contact pressure distribution, which has a negative impact on the uniformity of tire wear. Certain impact; the current zero-degree belt layer is extruded with more than a dozen high-elongation steel cords. Since it is difficult to control the rolling tension of multiple steel wires, the tension between the zero-degree belt layer steel wires is prone to uneven tension, resulting in Unstable properties such as tire marks, high speed, and durability; the thickness of the zero-degree joint overlap increases, causing the tire to often encounter the cords at the zero-degree joint overlap during retreading, tread grinding or re-engraving, resulting in a decrease in tire life

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