JP2023004524A - Tire management method and management system - Google Patents

Abstract

To provide a tire management method and management system that can grasp characteristic information of a tire member as tire-specific information in units of individual sizes for one tire with higher accuracy.SOLUTION: A tire management method includes: molding a green tire G by integrating multiple types of tire members E, including a tire member E1, which is made into individual sizes for one tire by cutting a long body L; attaching a position specifying mark 3 to each range corresponding to an individual size of one tire of a long body L when the long body L is manufactured; storing a predetermined quality information QL of the long body L measured in a range with each position specifying mark 3 by associating it with the position specifying mark 3; including the linked quality information QL as intrinsic information D of the tire T by reading the position specifying mark 3 on the tire member E1 to be used when molding the green tire G with a specifying mark reader 6; and obtaining the intrinsic information D by reading an identification label 8 on the tire T with an identification label reader 7.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a tire management method and management system, and more particularly, a tire management method and a tire management method capable of acquiring, as tire-specific information, tire member quality information in units of individual tire sizes with higher accuracy. It relates to the management system.

BACKGROUND ART Tires are manufactured using various tire members such as unvulcanized rubber extruded by an extruder or the like and reinforcing layers formed of unvulcanized rubber and reinforcing cords. When manufacturing a tire, these various tire members are integrated in a molding process to form a green tire. A tire is then manufactured by vulcanizing this green tire. An identification label such as a bar code is attached to the manufactured tire, and by reading this identification label, it is possible to acquire specific information such as the manufacturing lot of the tire (see, for example, Patent Document 1).

In the invention proposed in Patent Document 1, measurement data of each tire member constituting the tire is collected as unique information of the tire when the tire member is mounted on the forming drum, and the tire is formed. It is tied to the barcode of the tire. Therefore, by reading the bar code attached to the tire, the measurement data of each tire member can be acquired, which contributes to the improvement of the traceability of tire quality.

By the way, a tire member such as unvulcanized rubber for a tread is manufactured as a long body and then cut into individual sizes required for one tire for use. In the management system proposed in Patent Document 1, since the measurement data of the tire member after being individually sized is acquired, the measurement data (quality information) of the tire member at the time when the long body is manufactured is obtained. you can't get it. In the manufacturing process of the elongated body, the quality information is acquired for each production lot of the elongated body. Therefore, in order to acquire the quality information of the tire member in units of individual size for one tire at the time when the elongated body was manufactured, for example, among the elongated bodies in the corresponding production lot, the target one should be selected. A part (range) corresponding to the tire member of the individual size unit of the tire is estimated, and the quality information of the estimated part is used. In such a method of estimating a part, an error is likely to occur in the acquired quality information. Therefore, there is room for improvement in acquiring the quality information of the tire member in units of individual tire sizes with higher accuracy.

JP 2012-108593 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a tire management method and a management system capable of acquiring, as tire-specific information, tire member quality information in units of individual tire sizes with higher accuracy.

A tire management method of the present invention for achieving the above object integrates a plurality of types of tire members including tire members formed into individual sizes for one tire by cutting a long body to produce a green tire. Unique information of a tire manufactured by molding and vulcanizing the green tire is stored in a storage device in association with an identification label attached to the tire, and the identification label is read by an identification label reader. In the tire management method for acquiring the unique information of the tire, when the elongated body is manufactured, a position specifying mark is attached to each range corresponding to the individual size of one tire of the elongated body. At the same time, predetermined quality information of the elongated body is measured in the range to which each of the position specifying marks is attached, and the measured quality information is stored in association with the position specifying mark, When molding a green tire, the position specifying mark attached to the tire member formed in the individual size used is read, and the quality information linked to the position specifying mark is read from the unique It is characterized by being included as information.

The tire management system of the present invention is manufactured by vulcanizing a green tire in which a plurality of types of tire members including tire members formed into individual sizes for one tire by cutting a long body are integrated. a storage device in which unique information of a tire and an identification label attached to the tire are linked and stored; and an identification label reader that acquires the unique information of the tire by reading the identification label. a marking machine that, when the elongated body is manufactured, affixes a position specifying mark to each range corresponding to an individual size of one tire of the elongated body, and the position specifying a measuring device for measuring predetermined quality information of the elongated object in the marked range; and a storage unit for storing the quality information measured by the measuring device and the position specifying mark in a linked manner. and a specific mark reader for reading the position specific mark attached to the tire member formed in the individual size to be used when the green tire is molded, wherein the specific mark reader reads the The quality information linked to the position specifying mark is included as the unique information by reading the position specifying mark.

According to the present invention, when the elongated body is manufactured, a position specifying mark is attached to each range corresponding to the individual size of one tire of the elongated body, and each of the position specifying marks Predetermined quality information of the elongated body measured in the range marked with is associated with the position specifying mark and stored. Therefore, when the green tire is molded, by reading the position specifying mark attached to the tire member formed in the individual size to be used, the position specifying mark linked to the position specifying mark Quality information can be included as the unique information. Therefore, by reading the identification label attached to the tire with the identification label reader, the quality information of the tire member manufactured by cutting the elongated body can be obtained in units of individual tire size. , can be obtained with higher precision. Along with this, the traceability of tire quality is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram schematically illustrating a tire management system of the present invention; FIG. 2 is an explanatory diagram illustrating a tire manufacturing facility to which the management system of FIG. 1 is applied; FIG. 3 is an explanatory diagram illustrating an enlarged example of a part of the tire manufacturing facility in FIG. 2 ; FIG. 4 is an explanatory diagram illustrating FIG. 3 in plan view; FIG. 4 is an explanatory diagram illustrating a state in which unique information of a tire is acquired by reading an identification label;

BEST MODE FOR CARRYING OUT THE INVENTION A tire management method and a tire management system according to the present invention will be described below based on embodiments shown in the drawings.

The embodiment of the tire management system 1 of the present invention illustrated in FIG. 1 can easily acquire the unique information D of each tire T by using the identification label 8 attached to each tire T. FIG. The tire T is composed of various types of tire members E. According to this management system 1, the quality information QL at the time of manufacture of the tire member E1 manufactured by cutting the long body L is converted to the unique information D can be understood as The tire member E1 is formed by cutting the long body L into individual sizes for one tire.

This management system 1 includes a storage device 9 in which unique information D of a tire T and an identification label 8 attached to the tire T are linked and stored, an identification label reader 7 for reading the identification label 8, It has special components. These special components are a marking machine 2 for applying a position specifying mark 3 to the elongated body L, a measuring machine 4 for measuring predetermined quality information QL of the elongated body L, this quality information QL and the position specifying mark 3 are linked and stored, and a specific mark reader 6 that reads the position specific mark 3 .

When the long body L is manufactured, the marking machine 2 creates a position specifying mark for each range corresponding to the individual size of the long body L for one tire (that is, the length of one tire member E1). 3 is attached. For example, the marking machine 2 can be a device that attaches the position specifying mark 3 by applying ink or the like to the surface of the elongated body L by jetting, transferring, or the like. A marking machine 2 can be used to attach a position specifying mark 3 to the elongated body L being transported. At least one position specifying mark 3 may be attached to each range corresponding to the individual size of one tire of the long body L, so a plurality of the same position specifying marks 3 may be placed in one range at intervals. It may be placed in an open position.

The specification of the position specifying mark 3 is not particularly limited as long as the position to which it is attached can be specified. Various letters, numbers, symbols, two-dimensional codes, or a combination thereof can be used as the position specifying mark 3, but it is preferable to include a serial number indicating the order in which the position specifying mark 3 is applied. In order to improve the accuracy of reading by the specific mark reader 6, the position specifying mark 3 preferably has a color that stands out against the color of the tire member E1 to which the position specifying mark 3 is attached. Since the tire member E1 is often black, for example, the position specifying mark 3 of a white-based color or a yellow-based color that is moderately easy to see is used for black.

The measuring machine 4 measures the predetermined quality information QL of the elongated object L in each range marked with the position specifying marks 3 when the elongated object L is manufactured. The type of quality information QL includes at least one of the mass, temperature, and shape of the elongated body L, for example. A known measuring device 4 suitable for measuring the quality information QL can be used according to the type of the quality information QL to be measured. Therefore, when measuring a plurality of types of quality information QL, the same number of measuring instruments 4 as the number of types of quality information QL may be used.

The storage unit 5 stores the quality information QL measured by the measuring device 4 and the position specifying mark 3 attached to the range where the quality information QL is measured in association with each other. A computer (computer memory) is used as the storage unit 5 .

The specific mark reader 6 reads the position specific mark 3 attached to the tire member E1 used when the green tire G is formed by integrating various tire members E including the tire member E1. The specific mark reader 6 is also used to read the position specific marks 3 attached to the surface of the long body L when it is manufactured. As the specific mark reader 6, for example, known scanners equipped with a digital camera or the like for acquiring image data can be used. A specific mark reader 6 can be used to read the position specific marks 3 attached to the tire member E1 and the elongated body L being conveyed and moved.

As the identification label reader 7 and the identification label 8, various conventionally known ones can be used. Therefore, as the identification label 8, a bar code, a two-dimensional code, or the like can be used, and as the identification label reader 7, known scanners for reading these can be used.

In the storage device 9, the unique information D of the tire T and the identification label 8 attached to the tire T are linked and stored. A computer server or a computer is used as the storage device 9 . The storage device 9 and the storage unit 5 can be configured as separate computers so that they can communicate with each other, or a configuration in which the storage device 9 and the storage unit 5 are provided in one computer (computer server) can be used.

As illustrated in FIG. 2, this management system 1 is applied to a tire manufacturing facility. This tire manufacturing facility includes a kneader 11 , an extruder 12 , stock means 14 , a molding machine 15 and a vulcanizer 16 . The tire manufacturing facility is equipped with other equipment such as a bead making machine, which are omitted in FIG.

The kneader 11 produces unvulcanized rubber R by kneading a plurality of types of raw materials M (raw rubber, various compounding agents). A Banbury mixer or the like is used as the kneader 11 . The manufactured unvulcanized rubber R is fed into the extruder 12 in the next process by a conveying mechanism 13 such as a belt conveyor.

The extruder 12 adjusts the unvulcanized rubber R to an appropriate viscosity, molds it into a preset cross-sectional shape, and extrudes it as a long body L. It is also possible to manufacture a sheet-like long body L of unvulcanized rubber R by a calender device, or to manufacture a sheet-like long body L in which unvulcanized rubber R and a large number of aligned reinforcing cords are integrated. may also be manufactured. The manufactured long body L is transported to stock means 14 by a transport mechanism 13 such as a belt conveyor.

A stock means 14 temporarily stocks the long body L until it is needed in the next process. As the stock means 14, for example, a winding drum device for winding the long body L together with the liner is used. In the case of a direct extrusion/molding line where the manufactured long body L is immediately used in the next process, the stock means 14 becomes unnecessary. That is, the present invention can be applied to a manufacturing facility that temporarily stocks the long body L in the stock means 14, or to a manufacturing facility that has a direct extrusion/molding line.

Next, the long body L drawn out from the stock means 14 is conveyed to the molding machine 15 by the conveying mechanism 13 such as a belt conveyor. The molding machine 15 has a rotating molding drum 15a, and various kinds of tire components E (tread rubber, side rubber, inner liner, carcass material, belt material, beads, etc.) are integrated on the molding drum 15a. A green tire G is molded. Before being supplied to the forming machine 15, the long body L is cut by the cutter 14a on the conveying mechanism 13 to form individual tire members E1 for one tire. An identification label 8 for distinguishing the green tire G from other green tires G is attached to the molded green tire G. - 特許庁

The vulcanizing device 16 vulcanizes the green tire G in a vulcanizing mold 17 to manufacture a tire T molded into a predetermined shape. An identification label 8 is attached to the manufactured tire T as it is.

As illustrated in FIGS. 3 and 4, in this tire manufacturing facility, when the unvulcanized rubber R is extruded from the extruder 12 and manufactured as a long body L, three types of predetermined is measured by the measuring machines 4a, 4b, 4c. A measuring machine 4a for detecting the temperature of the long body L, a measuring machine 4b for measuring the shape of the long body L, and a measuring machine 4c for measuring the mass of the long body L are arranged in order in the direction in which the long body L is conveyed. ing. A marking machine 2 is arranged between the measuring machines 4a and 4b, and a specific mark reader 6 is arranged downstream of the measuring machine 4c (on the right side in FIGS. 3 and 4). The arrangement order of the measuring machines 4a, 4b, 4c and the marking machine 2 is not particularly limited and can be set arbitrarily. A specific mark reader 6 is arranged downstream of the marking machine 2 . Each of the measuring instruments 4a, 4b, and 4c can be arranged upstream or downstream of the specific mark reader 6. FIG.

As the measuring device 4a for detecting the temperature of the elongated body L, a known non-contact temperature sensor or the like can be used. As the measuring instrument 4b for measuring the shape of the elongated body L, a known non-contact type measuring instrument 4b for acquiring the surface shape (cross-sectional shape) of the elongated body L by irradiating and reflecting a laser beam or the like on the surface of the elongated body L is used. profile sensor or the like can be used. As the measuring device 4c for measuring the mass of the elongated body L, a known weight scale or the like that is installed on the lower surface of the transport mechanism 13 and capable of continuously measuring the mass of the elongated body L being transported can be used. .

Next, the procedure of the tire management method of the present invention using the management system 1 will be described with an example in which the long body L is manufactured by extruding unvulcanized rubber R.

As exemplified in FIG. 2 , the unvulcanized rubber R produced by the kneader 11 is used to produce a long body L molded into a predetermined profile shape by the extruder 12 . The elongated body L extruded from the nozzle of the extruder 12 is conveyed to the stock means 14 by the conveying mechanism 13 arranged in front. The conveying speed of the long object L is always grasped by the control device.

As exemplified in FIGS. 3 and 4, predetermined quality information QL of the long object L being transported is measured by the measuring device 4 (4a, 4b, 4c) in this transport section. The quality information QL measured by each measuring machine 4 is input to and stored in the storage unit 5 . On the surface of the elongated body L being transported, the marking machine 2 sequentially marks the position specifying marks 3 for each range corresponding to the individual size of one tire of the elongated body L. As shown in FIG. The position specifying mark 3 is preferably attached to the central portion in the longitudinal direction (central portion in the conveying direction) of a range corresponding to the individual size of one tire. The specific mark reader 6 sequentially reads the position specific marks 3 attached to the conveyed elongated body L, and the read position specific marks 3 (notation information) are input to the storage unit 5 and stored.

The arrangement (separation distance) between each measuring machine 4 and the specific mark reader 6 is known, and the conveying speed of the long object L is also known. Therefore, the time when the position specifying mark 3 read by the specific mark reader 6 passed each measuring device 4 can be known. That is, the quality information QL of the range marked with the position specifying mark 3 is measured by each measuring device 4 at a time before the time when each position specifying mark 3 is read by the specific mark reader 6. It becomes clear whether

Therefore, as exemplified in FIG. 1, in the storage unit 5, predetermined quality information QL of the long body L measured in the range to which each position specifying mark 3 is attached and each position specifying mark 3 are linked. stored with the Incidentally, if the specific mark reader 6 is arranged upstream of the measuring instrument 4, how much later than when each of the position specific marks 3 is read by the specific mark reader 6, the position can be specified. It can be seen whether the quality information QL in the range marked with the mark 3 has been measured by each measuring device 4 . Therefore, in this case as well, the predetermined quality information QL of the long body L measured in the range to which each position specifying mark 3 is attached and each position specifying mark 3 are linked and stored in the storage unit 5. remembered.

Next, as exemplified in FIG. 2, the long body L stored in the stock means 14 is unwound and transported to the molding machine 15 by the transport mechanism 13 arranged in front. In this transport section, the long body L is cut by the cutter 14a to form a tire member E1 of an individual size for one tire. A position specifying mark 3 is attached to the surface of each formed tire member E1.

When each tire member E1 is used in the molding machine 15, the specific mark reader 6 reads the position specifying mark 3 attached to the tire member E1. Various tire members E including the tire member E1 are conveyed to the forming machine 15, and the tire members E are integrated on the forming drum 15a to form the green tire G. As shown in FIG.

Each green tire G to be molded is attached with an identification label 8 for distinguishing it from another green tire G. As shown in FIG. Each identification label 8 (notation information) is input to and stored in the storage device 9 . Further, in the storage device 9, various unique information D of each green tire G is stored in association with the identification label 8 thereof. Specific information D includes, for example, the product number of tire T to be manufactured, size, date and time of manufacture, place of manufacture, manufacturing lot, product number of each tire member E used, processing conditions, quality information, and the like.

As illustrated in FIG. 1, the position specifying marks 3 of the tire members E1 used for molding the respective green tires G are read by the specifying mark reader 6 when the green tires G are molded. Therefore, the position specifying mark 3 stored in the storage unit 5 and the identification label 8 stored in the storage device 9 attached to the green tire G in which the tire member E1 is used are linked. Each position specifying mark 3 stored in the storage unit 5 is associated with the measured quality information QL. On the other hand, each identification label 8 stored in the storage device 9 is associated with unique information D. FIG. Therefore, by linking the position specifying mark 3 and the identification label 8, the quality information QL linked to the position specifying mark 3 can be obtained from the green tire G (tire T) to which the identification label 8 is attached. It can be included as unique information D.

Next, as illustrated in FIG. 2 , the green tire G to which the identification label 8 is attached is vulcanized by the vulcanizing device 16 to become the tire T molded by the vulcanizing mold 17 . An identification label 8 is attached to this vulcanized tire T. As shown in FIG.

As illustrated in FIG. 5 , the identification label 8 (notation information) is input to the storage device 9 by reading the identification label 8 with the identification label reader 7 . Since the identification label 8 and the specific information D of the tire T are associated with the storage device 9, the associated specific information D is displayed on the monitor 10, for example, based on the input identification label 8. can be made By reading the identification label 8 attached to the green tire G by the identification label reader 7, the quality information QL of the tire member E1 used in the green tire G can be obtained before the tire T is completed and vulcanized. It can be grasped step by step.

Therefore, according to the present invention, by reading the identification label 8 attached to the tire T by the identification label reader 7, the long body L of the tire member E1 manufactured by cutting the long body L is manufactured. It is possible to acquire the quality information QL at the time when the quality information QL is obtained with higher accuracy. That is, together with various unique information D of the tire T, the quality information QL at the time of manufacture of the elongated body L to be the tire member E1 can be grasped in units of individual tire sizes with higher accuracy.

The quality of the tire T may be influenced by the quality information QL of the long body L when the long body L was manufactured. Therefore, the use of the present invention is advantageous in improving the traceability of tire quality. In addition, according to the present invention, the factors that improve or deteriorate the tire quality can be analyzed by going back to the time of manufacture of the elongated body L, which will be the tire member E1, which greatly contributes to improving the tire quality.

In addition, if the long body L has a defective portion (for example, a front end portion or a rear end portion) that is excessively deformed or deteriorated, the long body L may be used as the stock means 14 by removing the defective portion. . Even when the defective portion is removed in this manner, the stocked elongated body L is provided with a position specifying mark for each range corresponding to the individual size of one tire. Therefore, even if the tire T is manufactured by molding the green tire G using such a long body L, the identification label 8 attached to the tire T (green tire G) can be read by the identification label reader 7. By reading, the quality information QL at the time of manufacture of the elongated body L to be the tire member E1 can be grasped in units of individual tire sizes with higher accuracy.

Since the mass, temperature, and shape of the long body L at the time of manufacture have a relatively large effect on the quality of the tire T, at least one of these measurement items should be included as the quality information QL measured by the measuring device 4. preferably included. It is more preferable to measure two or all of these measurement items as the quality information QL. The quality information QL of the elongated body L measured by the measuring device 4 may optionally include other necessary items.

The elongated body L is, for example, a member manufactured by extruding the unvulcanized rubber R, or a member manufactured by rolling. When the long body L is manufactured only from unvulcanized R, examples of the tire member E1 formed by cutting include tread rubber, side rubber, inner liner, and the like. When the long body L is manufactured by combining unvulcanized rubber R and reinforcing cords, a carcass material, a belt material, and the like can be exemplified as the tire member E1 formed by cutting.

Predetermined quality information QR of the unvulcanized rubber R used in the green tire G can be linked to the identification label 8 attached to the green tire G and stored in the storage unit 5 or storage device 9 . Thereby, the stored predetermined quality information QR of the unvulcanized rubber R can be included as the specific information D of the tire T manufactured by vulcanizing the green tire G. As the predetermined quality information QR of the unvulcanized rubber R, data such as viscosity and temperature at the time of manufacture can be exemplified.

The manufacturing conditions under which the areas to which the respective position specifying marks 3 of the long body L are attached may be linked to the corresponding position specifying marks 3 and stored in the storage unit 5 or the storage device 9 . That is, data such as the extrusion pressure (head pressure) of the extruder 12 when extruding the elongated body L, the extrusion speed, etc. can be included as the unique information D of the tire T as the manufacturing conditions of the elongated body L.

Further, the molding conditions of the green tire G and the vulcanization conditions of the green tire G can be linked to the identification label 8 attached to the green tire G and stored in the storage device 9 . Thereby, the stored molding conditions and vulcanization conditions can be included as the specific information D of the tire T manufactured by vulcanizing the green tire G.

Examples of molding conditions include data such as the machine number of the molding machine 15 used to mold the green tire G, molding time, molding time, and the name of the person who operated the molding machine 15 . The vulcanizing conditions include the model number of the vulcanizing device 16 used to vulcanize the green tire G, the individual number and cleaning history of the vulcanizing mold 17 used, the vulcanizing time, the vulcanizing time, and the heating temperature. Data such as the history, pressure history, and the name of the person who operated the vulcanizing device 16 can be exemplified.

In this way, as the unique information D of the tire T, the quality information of each tire member E including the above-described quality information QL of the long body L used in the tire T, and the manufacturing conditions of each tire member E , molding conditions of the green tire G, and vulcanization conditions. As a result, the identification label 8 attached to the tire T is read by the identification label reader 7 for quality information and manufacturing condition data in a series of steps from the upstream side to the downstream side of manufacturing the tire T. It is possible to quickly and accurately grasp the situation. Along with this, the traceability of tire quality is further improved.

The present invention is not limited to pneumatic tires, and can be used to manage tires T of various other types.

1 Management system 2 Marking machine 3 Position specifying mark 4 (4a, 4b, 4c) Measuring machine 5 Storage part 6 Specific mark reader 7 Identification label reader 8 Identification label 9 Storage device 10 Monitor 11 Kneading machine 12 Extruder 13 Conveying mechanism 14 Stock means 14a Cutter 15 Forming machine 15a Forming drum 16 Vulcanizing device 17 Vulcanizing mold G Green tire T Vulcanized tire L Long body E (E1, E2, E3, E4, ...) Tire member R Unvulcanized Rubber M Raw material D Specific information QL Quality information for long objects

Claims (7)

A tire manufactured by integrating a plurality of types of tire members including tire members formed into individual sizes for one tire by cutting a long body to form a green tire, and vulcanizing the green tire. is stored in a storage device in association with an identification label attached to the tire, and the identification label is read by an identification label reader to acquire the unique information.
When the elongated body is manufactured, a position specifying mark is attached to each range corresponding to an individual size of one tire of the elongated body, and the elongated body in the range to which each of the position specifying marks is attached Predetermined quality information of the body is measured, the measured quality information is stored in association with the position specifying mark, and formed into the individual size used when molding the green tire. and reading the position specifying mark attached to the tire member, and including the quality information linked to the position specifying mark as the unique information. The tire management method according to claim 1, wherein the quality information includes at least one of mass, temperature, and shape of the elongated body. The tire management method according to claim 1 or 2, wherein the elongated body is a tire member manufactured by extruding unvulcanized rubber or a member manufactured by rolling unvulcanized rubber. 4. The tire management method according to claim 3, wherein predetermined quality information of said unvulcanized rubber is included as said unique information. 5. The method of claim 1, wherein manufacturing conditions under which the range of each of the elongated bodies to which the position specifying marks were attached are stored in association with the corresponding position specifying marks and included as the unique information. The tire management method according to any one of the above. The tire management method according to any one of claims 1 to 5, wherein the green tire molding conditions and the green tire vulcanization conditions are included as the unique information. Unique information of a tire manufactured by vulcanizing a green tire that integrates multiple types of tire members including tire members formed into individual sizes for one tire by cutting a long body and attached to this tire A tire management system comprising: a storage device in which a stored identification label is linked and stored; and an identification label reader that acquires the unique information by reading the identification label,
a marking machine that attaches a position specifying mark to each range corresponding to an individual size of one tire of the long body when the long body is manufactured; a measuring machine for measuring predetermined quality information of an elongated body; a storage unit for storing the quality information measured by the measuring machine and the position specifying mark in association with each other; and the green tire is molded. a specific mark reader for reading the position specific mark attached to the tire member formed in the individual size to be used,
A tire management system, wherein the quality information linked to the position specifying mark is included as the unique information by reading the position specifying mark with the specific mark reader.

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