JP2004074730A - Strip material supply method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a strip material supply method by which an equipment cost can be curtailed. <P>SOLUTION: Blending materials are mixed to prepare a compound C from which a strip material S is directly molded and stored. This process is repeated to mold the strip materials S different in blending contents to be stored. Then, the stored strip materials S are supplied. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for supplying a strip material used for manufacturing a pneumatic tire or the like, and more particularly, to a method for supplying a strip material for reducing equipment costs.
[0002]
[Prior art]
In recent years, in the production of pneumatic tires, a method of winding a rubber strip material to form a green tire has been adopted. In such a method, for example, as shown in FIG. 2, a compounding material is mixed in a mixing device 11 to prepare a sheet-shaped or pellet-shaped compound 12, and the compound 12 is stored and stored at the time of green tire molding. Each compound 12 is extruded by a respective extruder 13 to form a strip material 14, and the strip material 14 is sequentially wound directly on a tire forming drum 15 to form a green tire G, thereby enabling high-mix low-volume production. .
[0003]
However, since the respective strip materials 14 having different blending contents are extruded and sequentially supplied by the respective extruders 13, the equipment used for the extrusion molding is required by the number of the respective strip materials 14, which causes a significant increase in the equipment cost. Had become.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a strip material supply method capable of reducing equipment costs.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a compound prepared by mixing a compounding material, forming a strip material directly from the compound, storing the strip material, and repeating the above steps to obtain a strip material having a different compounding content. It is characterized by storing and then supplying the stored strip material.
[0006]
According to the present invention having the above-described configuration, by storing the strip materials, it is possible to form each of the strip materials having different blending contents using the same equipment, and thus the strip material is formed for each strip material. There is no need to install equipment. Therefore, the equipment used for the strip material forming process can be reduced, and the equipment cost can be reduced.
[0007]
Conventionally, since the strip material is directly supplied while being formed, when a defective strip material is generated, it is supplied as it is, but by storing the strip material, the defective strip material is supplied. As a result, it is possible to avoid the occurrence of product defects due to the strip material.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
[0009]
FIG. 1 is an explanatory view showing an example of a method of supplying a strip material of the present invention by taking an example of molding a green tire, wherein 1 is a mixing device for mixing a compounding material to prepare a compound C, and 2 is a mixing device 1. Extruder for extruding the compound C supplied from the extruder into a strip material S, a bobbin 3 for winding the strip material S extruded from the extruder 2, and a winding device 4 for winding the strip material S by rotating the bobbin 3. Reference numeral 5 denotes a storage location for storing the bobbin 3 on which the strip material S has been wound, and reference numeral 6 denotes a supply device that unwinds the strip material S from the bobbin 3 and supplies the strip material S to the tire forming drum X.
[0010]
In the strip material supply method of the present invention, the compounding materials supplied to the mixing device 1 are mixed in the device to prepare a rubber compound, and the compound C is directly supplied to the extruder 2. Next, the compound C is formed into a continuous tape-shaped strip material S made of unvulcanized rubber and extruded by the extruder 2.
[0011]
Here, the strip material S was manufactured using the extruder 2, but a small calender was installed, and the compound C was supplied to the calender to form a rolled rubber sheet, which was cut in the width direction. Alternatively, the strip material S may be manufactured.
[0012]
Subsequently, if the bobbin 3 attached to the winding device 4 is rotated, the extruded strip material S is cooled by the fan F and wound around the bobbin 3 with the liner N interposed. When the winding of the strip material S is completed, the bobbin 2 is removed from the winding device 4 and stored in the storage place 5.
[0013]
The above steps are repeated to form each strip material S made of rubber having different compounding contents used for forming the green tire G, wound around the bobbin 3 and stored in the storage place 5.
[0014]
At the time of forming the green tire G, the stored bobbins 3 are set in the supply device 6, respectively, and the strip material S is unwound while winding the liner N from the bobbin 3, and is sequentially wound and supplied to the rotating tire forming drum X. is there.
[0015]
According to the present invention, the compound C is prepared by mixing the compounding materials, the strip material S is formed directly from the compound C, the strip material S is stored, and the strip is repeated by repeating the process. Since the strip material S is formed and stored, and then the stored strip material S is supplied, it is possible to form and supply the strip materials S having different blending contents using the same equipment. In addition, there is no need to install a facility for forming a strip material for each strip material having different composition. Therefore, the equipment used for the forming process of the strip material S can be largely reduced, and the cost can be significantly reduced.
[0016]
Further, when the compound to be used is changed, it is only necessary to replace the bobbin 3, so that the change can be made in a short time.
[0017]
Further, conventionally, since a strip material is wound while being extruded and formed at the time of manufacturing a tire, when a defective strip material is generated, it is wound as it is to form a defective green tire, but the strip material S is stored. This makes it possible to prevent the defective strip material from being found and supplied before the supply, so that a defective green tire caused by the strip material S is not formed.
[0018]
Further, even when the production of the tire is stopped, the mixing device 1 and the extruder 2 can be operated by storing the strip material S, so that the operation rate of the equipment can be increased as compared with the related art.
[0019]
In the present invention, a strip material S made of one type of unvulcanized rubber is usually wound on the bobbin 3, but each strip material used in one tire is wound in the reverse order of winding on the same bobbin. You may connect and wind in order. Thereby, the number of the supply devices 6 that supply the strip material S from the bobbin 3 can be reduced, and the equipment cost can be further reduced.
[0020]
The present invention can be preferably used as a method for supplying a strip material used for forming a green tire, particularly in the production of a pneumatic tire, but is not limited to this.
[0021]
【The invention's effect】
As described above, in the present invention, a compound is prepared by mixing compounding materials, a strip material is formed directly from the compound, the strip material is stored, and this process is repeated to store a strip material having a different composition. Then, since the stored strip material is supplied, the equipment cost required for forming the strip material can be reduced.
[0022]
In addition, by storing the strip material, when a defective strip material is generated, the strip material can be prevented from being supplied, so that the occurrence of a defect due to the strip material can be avoided.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view showing one example of a strip material supply method of the present invention.
FIG. 2 is a schematic explanatory view showing an example of a conventional strip material supply method.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 mixing device 2 extruder 3 bobbin 4 winding device 5 storage place 6 supply device C compound G green tire S strip material X tire forming drum

Claims (5)

A compound was prepared by mixing the compounding materials, and after forming a strip material directly from the compound, storing the strip material, storing the strip material having different blending contents by repeating the above steps, and then storing the strip material A strip material supply method for supplying a strip material. The strip material supply method according to claim 1, wherein the compound is extruded by an extruder and formed into a continuous tape-shaped strip material. The strip material supply method according to claim 1, wherein the strip material is wound around a bobbin and stored. 4. The strip material supply method according to claim 1, wherein the strip material is a strip material made of unvulcanized rubber. 5. The strip material supply method according to claim 1, wherein the strip material is a strip material used for forming a green tire, and the strip material is wound and supplied around a tire forming drum.

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