EP-4737106-A1 - SYSTEM FOR SUPPLYING TIRE MATERIAL TO FORMING DRUM BODY, AND TIRE MANUFACTURING METHOD

EP4737106A1EP 4737106 A1EP4737106 A1EP 4737106A1EP-4737106-A1

Abstract

Provided are a supply system and a method of manufacturing a tire that makes a tire forming device compact and efficiently supplies multiple types of tire materials to one forming drum body. Supply units (5 and 6) stocked with different types of tire materials (M1 and M2) in a wound state are arranged at adjacent stock positions (P 1 and P2). Supply directions of the tire materials (M1 and M2) fed out from the respective supply units (5 and 6) are made to intersect in a plan view. A turning conveyor (5e) configured to turn in a plan view is arranged between each of the supply units (5 and 6) and the supply conveyor (6e). For a bunt drum (3) and a supply conveyor (6e) installed at predetermined certain positions, the tire materials (M1 and M2) fed out from the respective supply units (5 and 6) and cut to predetermined lengths are transferred to the supply conveyor (6e) via the turning conveyor (5e), supplied to the band drum (3), and formed into a cylindrical shape by being wound around the band drum (3).

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 (5)

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 is fed out from the supply unit and is cut into tire materials each having a predetermined length and the tire materials are 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 being arranged at a plurality of respective stock positions, the tire materials fed out from the supply units at adjacent stock positions being of different kinds, each of the supply units being arranged such that supply directions of the tire materials intersect each other at a predetermined angle in a plan view, a turning conveyor configured to turn in a plan view being provided between the supply unit at each of the stock positions and the supply conveyor, and for the forming drum body and the supply conveyor installed at predetermined certain positions, the tire materials fed out from the supply units arranged at the respective stock positions and cut to predetermined lengths being transferred to the supply conveyor via the turning conveyor and being supplied to the forming drum body.
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 supply unit at one of the stock positions are arranged in series.
The system for supplying a tire material to a forming drum body according to claim 1 or 2, wherein the predetermined angle is 85 degrees or more and 95 degrees or less.
The system for supplying a tire material to a forming drum body according to any one of claims 1 to 3, wherein the tire materials fed out from the supply units at the respective stock positions and cut to predetermined lengths are continuously supplied to the forming drum body, an entire length and a widthwise position over the entire length of each of the tire materials cut to the predetermined lengths are detected by a sensor while the tire materials are conveyed from the turning conveyor to the supply conveyor, and when each of the tire materials is wound around the forming drum body, a rotation speed and a widthwise position of the forming drum body are adjusted based on entire length data and widthwise position data over the entire length of each of the tire materials detected by the sensor.
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 4, 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 particularly relates to a tire material supply system and a method of manufacturing a tire that can make a tire forming device compact and efficiently supply multiple types of tire materials to one forming drum body. 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. In the servicer, in order to supply multiple types of tire materials to one tire molding machine, it is necessary to prepare a set of the material holding portion and the movable conveyor for each type of tire material and to install each set slidably along the rail. Since a large space is required to slide sets provided for respective types of tire materials, 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. Thus, there is room for improvement in making the tire forming device compact and efficiently supplying multiple types of tire materials to one tire molding machine. 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 tire material supply system and a method of manufacturing a tire that can make a tire forming device compact and efficiently supply multiple types of tire materials to one forming drum body. 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 is fed out from the supply unit and is cut into tire materials each having a predetermined length and the tire materials are 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 are arranged at a plurality of respective stock positions. The tire materials fed out from the supply units at adjacent stock positions are of different kinds. Each of the supply units is arranged such that supply directions of the tire materials intersect each other at a predetermined angle in a plan view. A turning conveyor configured to turn in a plan view is provided between the supply unit at each of the stock positions and the supply conveyor. For the forming drum body and the supply conveyor installed at predetermined certain positions, the tire materials fed out from the supply units arranged at the respective stock positions and cut to predetermined lengths are transferred to the supply conveyor via the turning conveyor and are supplied to the forming drum body. 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 supply units are arranged such that the supply directions of the tire materials fed out from the supply units at adjacent stock positions intersect each other at a predetermined angle in a plan view, and the turning conveyor is provided between the supply unit at each of the stock positions and the supply conveyor. Accordingly, to supply the different types of tire materials to the forming drum body, it is only necessary to turn the turning conveyor, instead of moving the respective supply units, eliminating an excessive space. In addition, an excessive space is not required to turn the turnin