WO2007091315A1 - Process for producing tire and equipment therefor - Google Patents

Abstract

In the simultaneous production of a variety of tires including the molding operation, vulcanization operation and finishing operation, it is intended to attain enhancing of operation-to-operation efficiency and thus realize efficient multiproduct production. Means therefor is provided by pasting an information label onto each green tire molded in the molding operation, carrying out an operation-to-operation integrated management with the use of the information label, disposing a mounting area for temporary stocking of green tires between the molding operation and vulcanization operation sites, and reducing any waiting time occurring due to a cycle time difference between the molding operation and vulcanization operation.

Description

 Tire manufacturing method and manufacturing equipment

 Technical field

 [0001] The present invention relates to a tire manufacturing method and a manufacturing apparatus suitable for manufacturing a variety of products.

 Background art

 [0002] In general, a tire includes a plurality of rubber members and a plurality of reinforcing members mainly composed of a cord. Typically, as shown in FIG. 3, each part such as the inner liner 1, the tread 2, the side wall 3, and the chafer 4 is formed by rubber members according to the required characteristics, and these rubber members are formed. The tire T is configured in combination with a carcass layer 6, a belt layer 7, a bead body 8, and the like that are reinforcing members including cords.

 [0003] Conventionally, the manufacturing method of the tire T described above has a band drum shape that can be expanded and contracted, and an inner liner carcass ply or the like is pasted, a bead is molded with a primary molding drum, and a sidewall is formed into a green case. The green case is transferred to a secondary molding drum that can be shaved and transformed into a toroidal shape, and a belt or tread rubber is pasted on it to form an unvulcanized green tire, which is then vulcanized. It is done by processing.

 [0004] In such a conventional manufacturing method, in order to efficiently manufacture various types of tires having different inch sizes and tread patterns, there is a waiting time caused by the time required for each manufacturing process between tires of different types. It is known to control the function of a manufacturing facility so as to minimize time (see, for example, Patent Document 1).

 Patent Document 1: PCTZEP01Z05844

 Disclosure of the invention

 Problems to be solved by the invention

[0005] By the way, since tires are important parts for ensuring vehicle safety, tires are shipped after being inspected for products. For this reason, the manufacturing facility of Patent Document 1 improves the inspection efficiency even if the manufacturing time is shortened and the productivity is improved. Without this, further improvement in productivity cannot be expected.

 [0006] Therefore, the present invention provides a tire manufacturing method and method that can improve the efficiency of the inspection process and achieve further improvement in productivity in addition to the green tire molding process and vulcanization process. The purpose is to provide manufacturing equipment.

 Means for solving the problem

[0007] The tire manufacturing method of the present invention includes a molding step of molding an unvulcanized green tire, a vulcanization step of vulcanizing the green tire, and a small amount of post-treatment and inspection of the vulcanized tire. This is a method of manufacturing multiple types of tires at the same time by having multiple types of equipment corresponding to multiple types of tires. Then, an information label to which at least tire information indicating the type of the green tire is affixed to the molded green tire, the green tire is stored in the mounting area, and the storage position information indicating the storage position is stored in the green tire. Store in the data processing device in association with the tire information attached to the information label affixed to the tire, and based on the storage position information associated with the tire information, The green tire stored in the storage area is transferred to the vulcanization process line corresponding to the type of the green tire, and transferred to the finishing process line corresponding to the type of the tire based on the tire information of the vulcanized tire. It is characterized by this.

 [0008] In the manufacturing method of the present invention, the green tire molding process, vulcanization process, and finishing process are centrally managed by the information label, so that efficiency is achieved between the processes, and high-mix production is efficiently performed. be able to. In each process, the force is also different because the cycle time differs between the molding process and the vulcanization process by temporarily placing the molded tires in the mounting area between the molding process and the vulcanization process. The waiting time that occurs can be reduced and production efficiency can be further improved.

[0009] In addition, the tire manufacturing facility of the present invention implements the above-described tire manufacturing method, and includes a molding apparatus that molds an unvulcanized green tire, and a vulcanization that vulcanizes the green tire. The equipment and finishing equipment that performs at least one of post-processing and inspection of vulcanized tires are provided for each type of tire, and each device is driven and controlled by a data processing device. A facility for simultaneously manufacturing multiple types of tires, the molding Means for affixing an information label to which at least tire information indicating the type of the green tire is attached to the green tire molded in the apparatus, and transferring the green tire affixed with the information label to a mounting area for storing the green tire Storage position information indicating the storage position of the green tire in the placement area and the tire information attached to the information label affixed to the green tire in association with the tire information stored in the database of the data processing device The storage position information associated with the means and the database force tire information is called, and the dry tire stored in the mounting area based on the storage position information is transferred to the vulcanizer corresponding to the type of the green tire. Read the information label of the vulcanized tire and based on the read tire information It is characterized in that and means for transferring the finishing device according to the varieties of the tire.

 The invention's effect

 [0010] As described above, according to the present invention, since the molding process, vulcanization process, and inspection process of the tire are managed by the information label attached to the green tire, the efficiency is improved between the processes. Planning and efficient multi-product production.

 BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

 [0012] FIG. 1 is a schematic diagram of a tire manufacturing facility used in the present embodiment, and FIG. 2 is a schematic diagram showing a finishing device group that performs a finishing process on a vulcanized tire.

[0013] The tire manufacturing facility 10 in the present embodiment is capable of manufacturing a wide variety of tires having different tire sizes, tread patterns, and the like, and is a tire molding apparatus 20 that molds an unvulcanized green tire. The tire molding equipment group 21 that molds multiple types of green tires according to the tire type and the tire vulcanizing apparatus 70 that vulcanizes the green tires, and adds multiple types of tires according to the tire type Tire vulcanizer group 71 for vulcanization molding and various devices 92, 94, 96, 98 for post-treatment and inspection such as cleaning of vulcanized tires, and post-treatment of multiple types of tires according to tire type And a finishing device group 91 for inspecting, and conveying means 56, 72, and 74 for transferring tires between the device groups 21, 71, 91. Further, each of the device groups 21, 71, 91 and the transport means 56, 72, 74 are connected to the data processing device 12 via a network, and are scheduled to be manufactured from outside. The data processor 12 receives the production plan data including the product type and quantity.

[0014] Each tire molding device 20 constituting the tire molding device group 21 basically has an unvulcanized green tire T having a structure as illustrated in Fig. 3 although there are differences in tire size and the like. And has substantially the same configuration. Specifically, the tire molding apparatus 20 is

 A molding process for molding the unvulcanized green tire T, a green tire inspection process for measuring the weight of the green tire completed in the molding process and attaching a barcode label as an information label to the sidewall 3 of the green tire; have.

 [0015] Information including a tire identification symbol, which is an identification symbol of a green tire to which the label is attached, is given to the barcode label as tire information and stored in a database in the data processing device 12. At that time, the tire identification symbol is recorded in the database in association with information on the type of tire with the barcode label attached, the date of manufacture, and information on the molding apparatus, and is measured in the green tire inspection process described above. The weight of the green tire is recorded in the database in association with it. In addition, information regarding the tire type, date of manufacture, and molding apparatus may be added directly to the tire information.

 [0016] In the data processing device 12, the allowable weight range of the green tire is stored in advance in the database for each tire type, and the allowable weight range corresponding to the tire type of the green tire measured in the green tire inspection process. And determine whether the measured weight is within the allowable weight range, thereby detecting defective green tires caused by forgetting to assemble tire components or lack of extruded rubber strips. It is possible to prevent the defective green tire from flowing into the next process.

 [0017] As described above, the green tire on which the weight measurement and the barcode label are applied in the green tire inspection process is taken out from the tire molding device 20 by being transferred to the conveyor 56 by a conveying means (not shown). . The conveyor 56 is a conveying means that conveys the tire from the tire molding apparatus 20 to the green placing area 110 for temporarily placing a tire.

[0018] In the green loading area 110, the bar code reader 112 causes the conveyor 56 to After reading the tire information on the barcode label affixed to the conveyed green tire, the green tire is transferred to an empty storage space in the placement area 110 and temporarily stored. At that time, the storage position information indicating the storage space where the green tire is stored is stored in association with the tire information read by the barcode reader 112.

[0019] The green tires stored in the green placement area 110 are conveyed to a predetermined tire vulcanizing device 70 of the tire vulcanizing device group 71 by the conveying means 72 that has received an instruction from the data processing device 12, and then vulcanized. Sulfur treatment is performed.

 [0020] Specifically, the data processing device 12 selects a green tire to be vulcanized from the production plan data from among the dirt tires stored in the green placement area 110, and selects the selected green tire. The storage position information stored in association with the tire information is called up from the database, and the tire vulcanizer 70 equipped with a vulcanization mold corresponding to the tire type of the green tire for which the intermediate force of the tire vulcanizer group 71 is also selected. select. Then, the data processing device 12 controls the conveying means 72 so as to convey the dry tire stored at the position corresponding to the called storage position information to the selected tire vulcanizing device 70, and the green tire The tire vulcanizer 70 that has been transported is allowed to vulcanize.

 The vulcanized tire vulcanized by the tire vulcanizer 70 is conveyed to the finishing device group 91 by a conveying means 74 such as a conveyor.

 The finishing device group 91 performs post-processing and inspection of vulcanized tires. As shown in FIGS. 1 and 2, the finishing device group 91 includes a cleaning device 92, a trimming device 94, and a unity finish as finishing devices. A measuring device 96 and a weight balance measuring device 98 are provided, and tire transfer is performed between the devices 92, 94, 96, 98 provided in the finishing device group 91 by means of transfer means 100a to 100d. .

[0023] Specifically, the vulcanized tire conveyed from the tire vulcanizing device 70 is first transferred to the tallying device 92 and adhered to the tire vulcanizing device 70, dust adhered during transportation, etc. Cleaning is performed to remove the dirt, and thereafter, the sheet is conveyed to the trimming device 94 by the transfer means 100a such as a conveyor. During this transportation, the barcode label affixed to the side 3 of the vulcanized tire is read by the barcode reader 102 and the The tire information of the vulcanized tire is input to the data processor 12.

 [0024] Based on the tire type stored in association with the tire information input from the barcode reader 102, the data processing device 12 is preliminarily stored in the data base for each tire type. The control pattern of the trimming device 94 is selected and transmitted to the trimming device 94. The trimming device 94 is a device that cuts off cylindrical burrs formed on the surface of a vulcanized tire by a vent hole of a vulcanization mold, and based on an instruction transmitted from the data processing device 12, a vulcanized tire The trimming process is performed to remove the vulcanized tire chip by controlling the displacement of the cutter holder that holds the cutter for cutting the blade along the predetermined track while rotating the cutter.

 The vulcanized tire that has undergone the trimming process is transported to the uniformity measuring apparatus 96 by the transfer means 100 b via the notch 104. This buffer 104 has a plurality of mounting lanes 106, and vulcanized tires are distributed and stored in mounting lanes 106 corresponding to the tire types! /

 [0026] The unity measuring device 96 uses a radial force variation (RFV) that is generated when the vulcanized tire rotates and a radial force variation (RFV) that is generated when the vulcanized tire rotates. Force variation) is measured, and the measurement result is sent to the data processor 12. The data processor 12 stores the measurement results received in association with the tire information of the vulcanized tire that has been measured.

[0027] The vulcanized tire for which the uniformity measurement has been completed is transferred to the weight balance measuring device 98 by the transfer means 100c, and the weight unbalance in a stationary state is measured to be opposite to the tire center of gravity when viewed from the tire center. Mark the position of the fixed light spot, then transfer it to the appearance inspection area 108 by transfer means lOOd, and visually inspect the appearance to complete the post-processing and inspection of the vulcanized tire.

[0028] As described above, in the present embodiment, the green tire molding process, vulcanization process and finishing process are centrally managed by the bar code label. Production can be performed efficiently. In particular, by providing a green placement area 110 for temporarily placing a molded green tire between the molding process and the vulcanization process, Since the cycle time is different between the mold process and the vulcanization process, the waiting time generated in each process can be reduced, and the production efficiency can be further improved.

 [0029] Further, in the uniformity measurement by the uniformity measuring device 96, the rim size required for rotation differs depending on the tire type, and the rim must be replaced as necessary. In this embodiment, the vulcanized tires are sorted and stored in the mounting lane 106 associated with each tire type before performing the uniformity measurement, so that various types of tires are produced simultaneously. Even in this case, vulcanized tires that can be measured with the same rim can be continuously supplied to the unity measuring device. As a result, the number of rim replacement operations can be reduced, and production efficiency can be improved.

 In this embodiment, a barcode label is used as an information label. However, the present invention is not limited to this, and a two-dimensional code such as a QR code may be used.

 Brief Description of Drawings

FIG. 1 is a schematic view of a tire manufacturing facility used in the present embodiment.

 FIG. 2 is a schematic view showing a finishing device group for performing a finishing process on a vulcanized tire.

 FIG. 3 is a sectional view of a tire.

 Explanation of symbols

 [0032] T ... tyre, 1 ... inner liner, 2 ... tread, 3 ... side wall, 4 ... chi-ichi, 6 ... carcass layer, 7 ... belt layer, 8 ... bead body, 10 ... ··· Tire manufacturing equipment, 12 ··· Data processing device, 20 ... Tire molding device, 21 ··· Tire molding device group, 56 ··· Conveyance means, 70 · · Tire vulcanizer, 71 ··· Tire vulcanizing device group, 72 ··· Conveying means, 74 ··· Conveying means, 91 ··· Finishing device group, 92 ··· Cleaning device, 94 ··· Trimming device, 96 · · · Uniformity measuring device, 98 ·································································································································································· No. 10 Placement area,

Claims

The scope of the claims  [1] A molding step for molding an unvulcanized green tire, a vulcanization step for vulcanizing the green tire, and a finishing step for performing post-treatment and inspection of the vulcanized tire. A method for simultaneously manufacturing a plurality of types of tires by providing a plurality of types of equipment corresponding to a plurality of types of tires, wherein at least one type of the green tire is formed on the molded green tire. Affix an information label with tire information indicating  The green tire is stored in a placement area, and storage position information indicating a storage position is stored in a data processing device in association with tire information attached to an information label attached to the green tire,  Based on the storage position information associated with the tire information, the green tire stored in the mounting area is transferred to the vulcanization process line corresponding to the type of the green tire,  A method for manufacturing a tire, comprising transferring to a finishing process line corresponding to a tire type based on tire information of the vulcanized tire.  [2] The finishing process according to claim 1, wherein the finishing step sorts the vulcanized tire into a mounting lane according to the type of the tire and then transfers the tire to a device for performing the finishing step. Tire manufacturing method.  [3] The tire manufacturing method according to claim 1 or 2, wherein the information label is a bar code label.  [4] A plurality of varieties of a molding device for molding an unvulcanized green tire, a vulcanizing device for vulcanizing the green tire, and a finishing device for performing post-treatment and inspection of the vulcanized tire. A facility for manufacturing multiple types of tires at the same time by providing multiple types according to tires, each device being driven and controlled by a data processing device,  Means for attaching an information label to which at least tire information indicating the type of the green tire is attached to the green tire molded in the molding apparatus; Means for transporting the green tire with the information label affixed to a mounting area for storing the green tire; Means for storing storage position information indicating a storage position of the green tire in the installation area in the database of the data processing device in association with tire information attached to an information label affixed to the green tire;  Means for calling storage position information associated with tire information from the database, and transferring the green tire stored in the mounting area based on the storage position information to a vulcanizer according to the type of the green tire;  Means for reading the information label of the vulcanized tire and transferring it to a finishing device according to the tire type based on the read tire information;  A tire manufacturing facility comprising: [5] The finishing device includes a mounting lane in which the vulcanized tire is associated with the type of the tire,  4. The tire manufacturing facility according to claim 3, wherein at least one of the post-processing and the inspection is performed after the vulcanized tire is sorted into the mounting lane. 6. The tire manufacturing facility according to claim 4 or 5, wherein the information label is a bar code label.