Tread layer bonding device and tire forming machine

Abstract

The invention discloses a tread layer bonding device. The tread layer bonding device comprises a tread conveying frame, a guide rail, a sliding block, omni wheels, side stop rollers, a tread pressingconnecting rod, a tread pressing roller, a tread pressing cylinder and a tread conveying cylinder. When a tread layer is bonded, the tread conveying cylinder pushes the tread conveying frame to slidein the direction close to a forming drum, and the tread pressing cylinder pushes the tread pressing connecting rod to rotate so that the tread pressing roller can press against the outer peripheral surface of the forming drum. The invention further discloses a tire forming machine. According to the tread layer bonding device, the movement of the air cylinders and the guide rail is adopted, accurate control is facilitated, the bonding stability is good, and the precision is high. According to the tire forming machine, only one forming drum is adopted, maintenance is easy, and the operation is convenient; and corresponding conveying devices are designed for the four layers of materials of an airtight layer, an inner cord fabric layer, an outer cord fabric layer and the tread layer, the fourlayers of materials only need to be fed once, no waiting and material change are needed, the materials do not interfere with each other and can be conveyed at the same time, the working intensity of workers is greatly reduced, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of tire manufacturing, and in particular relates to a tread layer bonding device and a tire building machine. Background technique [0002] At present, the tire building methods of various tire manufacturing enterprises at home and abroad are generally: first carry out tire carcass molding on a common building drum, and then move the carcass to another building drum (generally an airbag inflation forming drum) to inflate and expand. The middle part of the carcass, the tire crown, is inflated to the direct size close to the tire vulcanization model, and then the belt and tread are bonded, and finally formed into a green tire. [0003] The characteristic of producing tires on traditional building drums is that there must be two building drums, an ordinary half-drum or half-core wheel-type building drum and an inflatable building drum, which need to go through two processes: first on a building drum, The carca...

AI Technical Summary

Problems solved by technology

Since the carcass needs to be transferred from the carcass to the embryo, the molding accuracy is quite high, so the requirements for the molding equipment and operators are higher, the work intensity of the workers is high, the equipment occupies a larger area, and the corresponding investment costs will be higher. Large, the accuracy of the transfer ring is difficult to guarantee during the transfer process, and the blank is relatively soft, which is easy to deform the blank during the transfer process, affecting the quality of the tire, and the efficiency is also low; the two forming drums are not easy to maintain and operate

[0004] In existing bicycle tire and motorcycle tire building devices, the four layers of materials including the airtight layer, inner ply, outer ply, and tread layer are all conveyed through a conveying line and used to fit onto the forming drum one by one, which requires manual labor. Repeated refueling, while the process of loading and unloading is cumbersome and error-prone, resulting in low production efficiency and high labor intensity; at the same time, the physical characteristics of each layer of material are different, and they share a conveyor line for transportation, which cannot be transported according to the standard The unified process pre-treats the materials of each layer before being attached to the forming drum, resulting in low quality stability of the finished product

[0005] In addition, the tread layer of the tire needs to be cut into many sections during the process of manufacturing the tire. Since the thickness of the cross-section of the tread layer is not equal, the length of the cross-section of the tread layer shrinks. The problem of unevenness, which will cause the outer sides of the tread layer to overlap or separate from the head-to-tail joint after bonding, resulting in poor bonding stability and low bonding accuracy of the tread layer , there is a non-conforming product

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