Anti-package metal drum of single rod and dual-wheels machine

Abstract

The invention relates to a mechanical drum used for the turn-up rolling of an all steel wire radial loading tyre special equipment once forming machine, which is mainly composed of a mainshaft device, a left side drum and a right side drum; each side drum comprises a group of turn-up rods which are uniformly distributed in radial direction; the front end of each turn-up rod is provided with a large idler wheel and a small idler wheel alternately; the large idler wheel and the small idler wheel can be arranged on an eccentric Y-shaped wheel seat which can be hinged with the front end of the turn-up rod. Owning to the dual idler wheel structure of the turn-up rod and the alternating arrangement of the large idler wheel and the small idler wheel, the small idler wheel achieves the rolling again after the large idler wheel achieves the rolling, thus leading to a more sufficient rolling when the tyre side is turned up; meanwhile, the small idler achieves complementary rolling to the rolling blind area of the large idler wheel, eliminates or reduces rolling blind areas, leads to shallow impression of the tire rough to be processed, and has no residual bubble, thus improving the quality of forming.

Description

Technical field: [0001] The invention relates to a rubber tire machine, in particular to a mechanical drum used for turning-up and rolling on a single-stage forming machine of special equipment for all-steel radial truck tires. Background technique: [0002] With the continuous growth of domestic automobile sales, especially the demand of the all-steel radial tire market is also increasing, so the technical requirements for the tire manufacturing industry are also getting higher and higher. Most of the building drums are inflatable bladder turn-up forming drums. During the tire building process, it needs to inflate the bladder to expand it to complete the turn-up and compaction of the sidewall, and then discharge the gas in the bladder to make It is restored to its original state, and then the next operation is performed. Since the capsule is inflated and turned up and is elastically compacted, it cannot be guaranteed to be uniform, which will have an unstable impact on the ...

AI Technical Summary

Problems solved by technology

[0003] The existing turn-up rolling mechanical drum is mainly composed of a main shaft and two side drums symmetrically arranged left and right on the main shaft. Each side drum is mainly composed of a turn-up rod assembly, a tire blank fastening device and a turn-up rod driving cylinder. The turn-up rod assembly is composed of a group of turn-up rods with the same structure, and only one rolling wheel is installed at the front end of each turn-up rod, which is a single-rod single-wheel structure. Therefore, there must be a gap between the rolling wheel and the rolling wheel, especially when the rolling wheel rolls to the outer area of ​​the embryo, the gap between the rolling wheel and the rolling wheel is larger , there is a blind area in the rolling of the embryo, which will produce quality problems such as obvious rolling marks and residual air bubbles in the embryo

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