EP-4737105-A1 - SYSTEM FOR SUPPLYING TIRE MATERIAL TO MOLDING DRUM BODY AND TIRE MANUFACTURING METHOD

EP4737105A1EP 4737105 A1EP4737105 A1EP 4737105A1EP-4737105-A1

Abstract

Provided are a system for supplying a tire material to a forming drum body and a method of manufacturing a tire that can make a tire forming device compact and further reduce time loss due to replenishment of tire material. A plurality of supply units (7A and 7B) stocked with a tire material (M3) in a wound state are arranged side by side, the tire material (M3) fed from one of the supply units (7A) and cut to a predetermined length is supplied to a supply conveyor (7d) and a belt drum (3) installed at predetermined certain positions by using a slide conveyor (7d) configured to slide in a parallel direction of each of the supply units (7A and 7B) and is formed into a cylindrical shape by being wound around the belt drum (3). When the one supply unit (7A) stocked with the tire material (M3) becomes empty, the tire material (M3) is supplied from the other supply unit (7B). While the tire material (M3) is being supplied from the other supply unit (7B), the one supply unit (7A) that is empty is replaced with a new supply unit (7A) stocked with the tire material (M3).

Inventors

KONDO, Masatomo
ONISHI, KOHEI
WATANABE, MASAYUKI
MATSUMURA, Kensuke
NUMAZAKI, Yasushi
KAWAI, MASAHIRO
OISHI, Junpei
ZENYOJI, Chihiro
WATANABE, TAKEHIRO
SAITO, Dai
MATSUMARU, Teruaki

Assignees

The Yokohama Rubber Co., Ltd.

Dates

Publication Date: 20260506
Application Date: 20240710

Claims (4)

A system for supplying a tire material to a forming drum body, the system comprising: a supply unit in which a tire material having a band shape is wound and stocked; a forming drum body; and a supply conveyor arranged between the supply unit and the forming drum body and having a configuration in which the tire material fed out from the supply unit and cut to a predetermined length being placed flat on the supply conveyor, supplied to the forming drum body, and formed into a cylindrical shape by being wound around the forming drum body; a plurality of the supply units arranged side by side being at a stock position, a slide conveyor configured to slide in a parallel direction of each of the supply units between each of the supply units and the supply conveyor being provided, for the forming drum body and the supply conveyor installed at predetermined certain positions, the tire material fed out from one of the supply units and cut to a predetermined length being transferred to the supply conveyor via the slide conveyor and sequentially supplied to the forming drum body, when the one of the supply units stocked with the tire material becomes empty, the tire material fed out from the other of the supply units and cut to a predetermined length being transferred to the supply conveyor via the slide conveyor and sequentially supplied to the forming drum body, and while the tire material from the other of the supply units is being supplied to the forming drum body, the one of the supply units that is empty being replaced with a new one of the supply units stocked with the tire material.
The system for supplying a tire material to a forming drum body according to claim 1, wherein the forming drum body and the supply conveyor installed at the predetermined certain positions and the one of the supply units are arranged in series.
The system for supplying a tire material to a forming drum body according to claim 2, wherein when the one of the supply units stocked with the tire material becomes empty, the tire material is supplied from the new one of the supply units to the forming drum body upon completion of work of replacing the one of the supply units that is empty with the new one of the supply units stocked with the tire material.
A method of manufacturing a tire, the method comprising: by a forming device comprising the system for supplying a tire material to a forming drum body according to any one of claims 1 to 3, forming a green tire using the tire material; and vulcanizing the green tire.

Description

Technical Field The present invention relates to a system for supplying a tire material to a forming drum body and a method of manufacturing a tire, and more particularly, to a system for supplying tire material and a method of manufacturing a tire that can make a tire forming device compact, further reduce time loss due to replenishment of tire material, and improve work efficiency in the tire molding step. Background Art A tire is manufactured by vulcanizing a green tire. A green tire is formed by layering a number of types of tire materials. The green tire is formed by integrating, for example, an innerliner, a carcass material, a belt member, a tread rubber, and a pair of bead members, on a forming drum. Various servicers for supplying a number of types of tire materials to a tire molding machine have been proposed (see, for example, Patent Document 1). The servicer proposed in Patent Document 1 includes a plurality of sets of a material holding portion in which each tire material is stocked in a wound state and a movable conveyor, the plurality of sets being slidably movable along a rail. Sliding the desired set allows the desired set to be arranged in series with a fixed-position conveyor and a tire molding machine installed at predetermined positions. The tire material is then fed out from the material holding portion of the set and supplied to the fixed-position conveyor and the tire molding machine via the movable conveyor. This servicer can replace, by sliding the set emptied of tire material to a standby position, the material holding portion with a new material holding portion with tire material wound while tire material is being supplied from another set. Therefore, the tire material can be supplied to the tire molding machine without long time loss due to replenishment of tire material. However, since a large space is required to slide a number of sets, it is difficult to make the forming device compact. In addition, since the set of the material holding portion and the movable conveyor is not light in weight, it is difficult to quickly slide the set. This is disadvantageous in further reducing time loss due to the replenishment of tire material. Citation List Patent Literature Patent Document 1: JP 2000-25124 A Summary of Invention Technical Problem An object of the present invention is to provide a system for supplying a tire material to a forming drum body and a method of manufacturing a tire that can make a tire forming device compact, further reduce time loss due to replenishment of tire material, and improve work efficiency in the tire molding step. Solution to Problem To achieve the object described above, a system for supplying a tire material to a forming drum body of an embodiment of the present invention includes a supply unit in which a tire material having a band shape is wound and stocked; a forming drum body; and a supply conveyor arranged between the supply unit and the forming drum body and having a configuration in which the tire material fed out from the supply unit and cut to a predetermined length is placed flat on the supply conveyor, supplied to the forming drum body, and formed into a cylindrical shape by being wound around the forming drum body. A plurality of the supply units arranged side by side are at a stock position, a slide conveyor configured to slide in a parallel direction of each of the supply units between each of the supply units and the supply conveyor is provided, for the forming drum body and the supply conveyor installed at predetermined certain positions, the tire material fed out from one of the supply units and cut to a predetermined length is transferred to the supply conveyor via the slide conveyor and sequentially supplied to the forming drum body, when the one of the supply units stocked with the tire material becomes empty, the tire material fed out from the other of the supply units and cut to a predetermined length is transferred to the supply conveyor via the slide conveyor and sequentially supplied to the forming drum body, and while the tire material from the other of the supply units is being supplied to the forming drum body, the one of the supply units that is empty is replaced with a new one of the supply units stocked with the tire material. A method of manufacturing a tire of an embodiment of the present invention includes: by a forming device including the system for supplying a tire material to a forming drum body, forming a green tire using the tire material; and vulcanizing the green tire. Advantageous Effects of Invention In the system for supplying a tire material to a forming drum body of an embodiment of the present invention, the plurality of supply units are arranged side by side at the stock position, and the slide conveyor is provided between each of the supply units and the supply conveyor. Therefore, to supply the tire material from the separate supply unit to the forming drum body, it is only necessary to slide the sli