JP2019194041A - Analyzing method for tire production information - Google Patents

Abstract

To provide analyzing method for tire production information, by which an analyzing operation for improving at least uniformity or dynamic balance of a tire is made efficient.SOLUTION: For a plurality of tires T of identical specification, manufactured using the same molding machine 8 and vulcanizer 9, UF wave shape data and phase information thereof and phase information of a molding factor and vulcanizing factor that influence the UF wave shape data are stored in a storage unit 2b. On the basis of the degree of influence of the molding factor and vulcanizing factor with respect to the UF wave shape data calculated by an arithmetic unit 2a on the basis of the stored UF wave shape data and each phase information, the phase information of the molding factor and vulcanizing factor by which a UF value specified by the UF wave shape data is made to fall in a permissible range is calculated by the arithmetic unit 2a. Similarly, DB vector data is analyzed and phase information for the molding factor and vulcanizing factor by which a DB value specified by the DB vector data is made to fall in a permissible range is calculated by the arithmetic unit 2a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for analyzing tire manufacturing information, and more particularly, to a method for analyzing tire manufacturing information capable of efficiently performing an analysis operation for improving at least one of tire uniformity and dynamic balance. .

  The tire manufacturing information includes various information such as uniformity information and dynamic balance information. If various tire manufacturing information can be easily grasped for each tire, it is very useful because it can be used for analysis for improving tire uniformity and dynamic balance. For example, a tire inspection method and apparatus for measuring a rotation direction angle of a singular point (a balance light point or a primary peak point of RFV) with respect to a mark (such as a barcode) serving as a reference point of the tire has been proposed (Patent Literature). 1).

  Patent Document 1 describes that a singular point is likely to appear at a position shifted in the tire rotation direction with respect to a reference mark, and that the obtained information can be used to improve the tire. (See paragraph 0003). However, Patent Document 1 only focuses on measuring the rotation direction angle of a singular point with respect to a reference mark as a reference point without requiring time and labor (see paragraph 0005 and the like). Therefore, there is a demand for a method that can efficiently perform analysis work for improving uniformity and dynamic balance using tire manufacturing information.

JP 2001-159584 A

  An object of the present invention is to provide a method for analyzing tire manufacturing information, which can efficiently perform an analysis operation for improving at least one of tire uniformity and dynamic balance.

  In order to achieve the above object, the tire manufacturing information analysis method of the present invention uses the same molding machine to mold a green tire in the molding process, and vulcanizes the green tire using the same vulcanizer in the vulcanization process. For a plurality of tires of the same specification manufactured by vulcanization, tire waveform data of each tire, phase information in the tire circumferential direction of the waveform data, and a tire of a forming factor in the forming step affecting the waveform data The phase data in the circumferential direction and the phase information in the tire circumferential direction of the vulcanization factor in the vulcanization step that affects the waveform data are stored in a storage unit, and the waveform data stored in the storage unit And the phase information of each of the shaping factor and the vulcanization factor on the waveform data based on the phase information and the phase information. And calculating the phase information of each of the forming factor and the vulcanization factor that causes the uniformity value specified by the waveform data to fall within an allowable range based on the calculated result. It is characterized by calculating by a part.

  Another tire manufacturing information analysis method of the present invention is to form a green tire using the same molding machine in the molding process, and vulcanize the green tire using the same vulcanizer in the vulcanization process. For a plurality of manufactured tires of the same specification, the dynamic balance vector data of each tire and the phase information in the tire circumferential direction of this vector data, and the tire circumferential direction of the forming factor in the molding step that affects the vector data Phase information and phase information in the tire circumferential direction of the vulcanization factor in the vulcanization step that affects the vector data are stored in a storage unit, and each of the vector data stored in the storage unit and each of the vector data Based on the phase information, the position of each of the molding factor and the vulcanization factor for the vector data The magnitude of the degree of influence of the information is calculated by the calculation unit, and based on the calculated result, each of the molding factor and the vulcanization factor that causes the dynamic balance value specified by the belt data to be within an allowable range. The phase information is calculated by the calculation unit.

  According to the former present invention, for a plurality of tires of the same specification manufactured by using the same molding machine and vulcanizer, the uniformity waveform data of each tire and the phase information in the tire circumferential direction of the waveform data, The storage unit stores the phase information in the tire circumferential direction of the molding factor in the molding step that affects the waveform data and the phase information in the tire circumferential direction of the vulcanization factor in the vulcanization step that affects the waveform data. Keep it. Therefore, by using the data and information stored in the storage unit, the phase information in the tire circumferential direction of each of the forming factor and the vulcanizing factor that causes the uniformity value specified by the waveform data to be within an allowable range. It can be quickly calculated by the calculation unit. Therefore, it is possible to improve the efficiency of analysis work for improving uniformity.

  According to the latter present invention, for a plurality of tires of the same specification manufactured with the same molding machine and vulcanizer, dynamic balance vector data of each tire and phase information in the tire circumferential direction of this vector data, Stores in the storage unit the phase information in the tire circumferential direction of the molding factor in the molding step that affects the vector data and the phase information in the tire circumferential direction of the vulcanization factor in the vulcanization step that affects the waveform data. Keep it. Therefore, by using the data and information stored in the storage unit, the phase in the tire circumferential direction of each of the molding factor and the vulcanization factor that causes the dynamic balance value specified by the belt data to be within an allowable range. Information can be quickly calculated by the calculation unit. Therefore, it is possible to improve the efficiency of analysis work for improving the dynamic balance.

It is explanatory drawing which illustrates the analysis apparatus used for the analysis method of tire manufacture information. It is explanatory drawing which illustrates the upper half of a tire by a cross sectional view. It is explanatory drawing which illustrates the tire of FIG. 2 by a side view. It is explanatory drawing which illustrates the formation process of a primary green tire by the side view of a tire. It is explanatory drawing which illustrates the process of shape | molding a green tire using the primary green tire of FIG. 4 by a tire side view. It is explanatory drawing which illustrates the vulcanization | cure process of a green tire by the cross-sectional view of a tire. It is explanatory drawing which illustrates the mold for vulcanization | cure and the green tire of FIG. 6 by the side view of a tire. It is explanatory drawing which illustrates the splice position of a tire structural member by the side view of a tire. It is a graph which illustrates RFV waveform data. FIG. 10 is a graph illustrating the RFV waveform data of FIG. 9 phase-aligned with respect to a reference point. It is a schematic diagram which illustrates dynamic balance vector data.

  Hereinafter, a method for analyzing tire manufacturing information according to the present invention will be described based on the embodiments shown in the drawings.

  In the embodiment of this analysis method, analysis for improving uniformity (hereinafter referred to as UF) and dynamic balance (hereinafter referred to as DB) of tires having the same specification is performed using tire manufacturing information of a plurality of tires having the same specification. I do. As illustrated in FIG. 1, an analysis apparatus 1 used for performing this analysis method includes a calculation unit 2a and a storage unit 2b. As the calculation unit 2a and the storage unit 2b, a CPU and a memory constituting a computer can be exemplified. Therefore, as the analysis apparatus 1, a computer server 2 (hereinafter referred to as server 2) provided with a calculation unit 2a and a storage unit 2b may be used. A database Bs described later is stored in the storage unit 2b.

  A detector 4 is connected to the server 2 so that the detection data can be input. The detector 4 acquires the positions of the mark marks M (M1, M2, M3) and the reference point Mc given on the side surface of the tire T. In this embodiment, a digital camera (image acquisition machine) that acquires a side view image of the tire T is used as the detector 4. An image controller 4 a is connected to the image acquisition machine 4, and the image controller 4 a is connected to the server 2 via the control unit 3. The operation of the image acquisition device 4 is controlled by the image controller 4 a according to an instruction from the control unit 3. The functions of the control unit 3 and the image controller 4a may be incorporated in the server 2.

  As the mark mark M, for example, the UF mark M1 indicating the tire circumferential position where the primary component of the RFV waveform data is the maximum value, the light spot mark M2 indicating the tire circumferential position where the tire T is the lightest, and the tire T are manufactured. A factory code mark M3 indicating the factory that has been used can be used.

  The reference point Mc is a preset point on the side surface of the tire T, and various indexes can be used. In this embodiment, since the QR label is attached to the reference point Mc, the QR label can be used as the reference point Mc. The QR label is a known label having various manufacturing information of the tire T (accessing various manufacturing information), and is suitable for use as the reference point Mc.

  Further, a reader 5, a UF measuring device 6, and a DB measuring device 7 are connected to the server 2 so that respective detection data can be inputted. The reader 5 reads the QR label Mc and acquires predetermined tire manufacturing information included in the QR label Mc. The UF measuring device 6 has a mark applying portion 6a that applies the UF mark M1 to the side surface of the tire T. The DB measuring instrument 7 has a mark imparting portion 7a that imparts a light spot mark M2 to the side surface of the tire T.

  The tire manufacturing information to be analyzed by the analyzing apparatus 1 is obtained from a plurality of tires T having the same specification and the manufacturing process thereof. In order to manufacture each tire T illustrated in FIGS. 2 and 3, a green tire G is molded using the same molding machine 8 (molding drum 8 a) illustrated in FIGS. Next, the molded green tire G becomes a tire T by being vulcanized using the same vulcanizer 9 (vulcanization mold 10) illustrated in FIGS. CL in the figure indicates the tire axis.

  As illustrated in FIG. 2, the tire T (pneumatic tire T) is configured by laminating various tire constituent members g (g1 to g7). Specifically, the carcass g2 is laminated on the outer peripheral surface of the innermost inner liner g1. The carcass g2 is mounted between a pair of left and right beads g3. Both ends of the carcass g2 are folded back from the tire inner side to the outer side around the bead core of each bead g3. A belt g5 is embedded in the center of the carcass g2 in the tire width direction, and a belt cover g6 and a tread rubber g7 are laminated on the outer peripheral surface of the belt g5. Side rubber g4 is laminated on the outer peripheral surface of the carcass g2 on both sides in the tire width direction of the tread rubber g7. The constituent member g of the green tire G is mainly unvulcanized rubber and a reinforcing material, and the tire T is configured by using other necessary constituent members g as appropriate. The belt cover g6 may have a specification that covers not only the entire width of the belt g5 but also a portion in the width direction. Further, the belt cover g6 may not be provided.

  In FIG. 3, the UF mark M1 is attached at a position of an angle A1 clockwise with respect to the reference point (QR label) Mc around the tire axis CL. The light spot mark M2 and the factory code mark M3 are attached at the positions of angles A2 and A3, respectively.

  In the molding process, as illustrated in FIGS. 4 and 5, the green tire G (G1) is molded by bonding the tire constituent member g on the molding drum 8 a of the molding machine 8. Specifically, in FIG. 4, the primary green tire G1 is molded by bonding an inner liner g1, a carcass g2, a bead g3, a side rubber g4, and the like on the molding drum 8a. In FIG. 5, a pair of left and right beads g3 are brought close to each other on the molding drum 8a, and the belt g5, belt A green tire G is formed by bonding a cover g6, a tread rubber g7, and the like.

  The belt-like tire constituent member g is spliced at one place or a plurality of places in the tire circumferential direction to be formed into a tubular shape (annular shape). Note that the primary green tire G1 and the green tire G are molded using the same single molding machine 8, or the primary green tire G1 and the green tire G are molded using separate dedicated molding machines 8. Sometimes.

  In the vulcanization process, as illustrated in FIGS. 6 and 7, the molded green tire G is put into the vulcanizer 9 and laid down in a vulcanization mold 10 attached to the vulcanizer 9. Be placed. Input position data of green tire G with respect to vulcanizer 9 (vulcanization mold 10) when green tire G is introduced into vulcanizer 9 (a stamped portion for factory code mark M3 arranged in vulcanization mold 10) Tire circumferential position data of the reference point Mc) is stored in the storage unit 2b.

  The green tire G is vulcanized after the vulcanizing mold 10 is closed and the vulcanizing bladder 9a inside the green tire G is inflated. In this embodiment, the vulcanization mold 10 includes a large number of sector molds 10a arranged in an annular shape, and an annular upper side mold 10b and a lower side mold 10c. In the vulcanization process, a tread pattern is stamped on the outer peripheral surface of the green tire G by the vulcanization mold 10, and a pattern, a factory code mark M3 and the like are stamped on the side surface, and the tire T is vulcanized. The vulcanization mold 10 is not limited to the sectional type exemplified in this embodiment, and a so-called split mold may be used.

  A QR label is attached to the position of the reference point Mc on the side surface of the vulcanized tire T. Thereafter, the tire T is stocked through quality inspections and the like by the UF measuring device 6 and the DB measuring device 7 illustrated in FIG. In the UF measuring device 6, a UF mark M <b> 1 is attached to the side surface of the tire T. In the DB measuring instrument 7, a light spot mark M2 is attached to the side surface of the tire T. Thereby, as illustrated in FIG. 3, a reference point (QR label) Mc and a mark mark M (UF mark M1, light spot mark M2, and factory code mark M3) are attached to the side surface of the tire T. Become.

  In FIG. 8, the spline positions of the inner liner g1, the side rubber g4, and the tread rubber g7 are indicated by S1, S2, and S3, respectively, as representative of the tire constituent member g. That is, the splice position S1 of the inner liner g1 is the position at an angle a1 clockwise with respect to the reference point (QR label) Mc around the tire axis CL, the splice position S2 of the side rubber g4, and the splice position S3 of the tread rubber g7. Are at the positions of angles a3 and a2. In this way, the green tire G is molded such that the splice position of the main tire constituent member g is a predetermined position (predetermined angle) set in advance with respect to the reference point (QR label) Mc. The tire manufacturing information indicating the splice position (predetermined angle) of the tire constituent member g with respect to the QR label Mc is stored in the storage unit 2b.

  Other predetermined tire manufacturing information is stored in the storage unit 2b. For example, the tire circumferential direction position of the reference point Mc with respect to a predetermined position of the molding drum 8a of the molding machine 8 used for molding the green tire G is also stored in the storage unit 2b. Further, the machine number of the vulcanizer 9 used for vulcanizing the tire T, the machine number of the molding machine 8, the specification of the tire constituent member g, the manufacturing conditions (manufacturing time, equipment number, etc.) of the tire constituent member g, green tire Predetermined manufacturing information such as G molding conditions and vulcanization conditions (time, temperature, pressure, etc.) is also stored in the storage unit 2b. As predetermined tire manufacturing information possessed by the QR label Mc, at least the tire circumferential direction position with respect to the reference point Mc of the splice position of the tire constituent member g when the green tire G is molded, and the reference point Mc with respect to the predetermined position of the molding drum 8a. The tire circumferential position is preferably stored in the storage unit 2b.

  Hereinafter, an example of an analysis method for improving UF and DB using the analysis apparatus 1 will be described.

  As illustrated in FIG. 1, the QR label Mc attached to the tire side surface of the vulcanized tire T is read by the reader 5, and the predetermined manufacturing information of the tire T that the QR label Mc has is described above. Obtain and input to server 2. The input predetermined manufacturing information is stored in the storage unit 2b.

  Next, UF waveform data is acquired by setting the tire T in the UF measuring device 6 and performing measurement. As the UF waveform data, waveform data such as RFV and LFV (raw waveform data, primary component waveform data, complex component waveform data, etc.) is acquired. The acquired UF waveform data is input to the server 2 and stored in the storage unit 2b. Based on the acquired UF waveform data, a UF mark M1 is added by the mark mark applying unit 6a to the position specified as the tire circumferential direction position where the primary component of the RFV waveform data becomes the maximum value by the calculation unit 2a. The

  Next, the tire T is set in the DB measuring device 7 and measurement is performed to acquire DB vector data. The acquired DB vector data is input to the server 2 and stored in the storage unit 2b. On the basis of the acquired data, the light mark M2 is attached by the mark mark applying part 7a to the position specified by the calculating part 2a as the tire circumferential position where the tire T is lightest. Note that the order of obtaining the UF waveform data and the DB vector data may be either first.

  Next, the position of the mark mark M and the QR label Mc is acquired by acquiring a side view image of the tire T with the mark mark M (M1, M2, M3) and the QR label Mc by the image acquisition machine 4. To do. On the basis of the acquired side view image, the mark mark M and the QR label Mc are detected based on the difference in color density and saturation from the surroundings, and the positions thereof are calculated by the calculation unit 2a. Accordingly, the relative position in the tire circumferential direction of the mark mark M with respect to the reference point (QR label) Mc is also calculated by the calculation unit 2a.

  The UF waveform data and DB beltle data are stored in the storage unit 2b. Therefore, the UF waveform data stored in the storage unit 2b and the calculated relative position in the tire circumferential direction of the UF mark M1 with respect to the reference point (QR label) Mc are associated and stored in the storage unit 2b. In addition, the DB vector data stored in the storage unit 2b and the calculated relative position in the tire circumferential direction of the light point mark M2 with respect to the reference point (QR label) Mc are associated with each other and stored in the storage unit 2b.

  As a result, the parameters of the tire circumferential position in each of the UF waveform data and DB beltle data stored in the storage unit 2b are based on the tire circumferential direction position of the reference point Mc, so that these specific tire manufacturing information (UF waveform data, DB vector data) can be grasped in correspondence with the actual circumferential position of the tire. That is, the phase information in the tire circumferential direction of each of the UF waveform data and the DB vector data can be grasped.

  Specifically, by measuring the tire T with the UF measuring device 6, the RFV waveform data of the tire T can be acquired as illustrated in FIG. A curve R in FIG. 9 shows raw RFV waveform data, and a curve R1 shows primary component waveform data. The point p indicates the peak position of the primary component waveform data, and a UF mark M1 is attached to the measured side surface of the tire T at a position corresponding to the circumferential position of the point p.

  Since the circumferential position of the tire T set in the UF measuring device 6 is random, even if the RFV waveform data illustrated in FIG. 9 is acquired, the phase information of the RFV waveform data in the actual tire T is unknown. However, since the relative position in the tire circumferential direction of the UF mark M1 (point p in the RFV waveform data) with respect to the reference point (QR label) Mc is known, it is stored in the storage unit 2b with reference to the reference point (QR label) Mc. The phase information of the stored RFV waveform data can be grasped. Therefore, the RFV waveform data illustrated in FIG. 9 can be phase-matched based on the tire circumferential direction position of the reference point (QR label) Mc as illustrated in FIG.

  The phase information of the light spot mark M2 is the same as that of the UF mark M1. By measuring the tire T with the DB measuring instrument 7, as illustrated in FIG. 11, static balance vector data F (hereinafter referred to as SB vector data F) is grasped. The direction of the SB vector data F indicates the lightest tire circumferential position of the tire T, and a light spot mark M2 is attached to the tire circumferential position.

  Further, in the DB measuring device 7, the tire upper surface side that causes rotational runout in the tire T due to the unbalanced mass on the tire upper surface side and the lower surface side by rotating around the tire axis CL in the horizontal state. And the moment balance MB1, MB2 on the lower surface side is grasped. Based on the grasped moment balances MB1 and MB2, DB beltle data f1 and f2 corresponding to the centrifugal force generated by the unbalanced mass on the tire upper surface side and the lower surface side are grasped.

  By the measurement by the DB measuring device 7, the relative tire circumferential direction position (arrangement) between the SB vector data F and the DB beltle data f1, f2 can be grasped. However, since the circumferential position of the tire T set in the DB measuring instrument 7 is random, even if the DB vector data f1 and f2 are acquired, the phase information of the DB vector data f1 and f2 in the actual tire T is unknown. . However, since the relative position (angle A2) in the tire circumferential direction of the light spot mark M2 with respect to the reference point (QR label) Mc is known, it is stored in the storage unit 2b with reference to the reference point (QR label) Mc. The phase information of the DB vector data f1 and f2 can be grasped. Therefore, the DB vector data f1 and f2 can also be phase-matched based on the tire circumferential direction position of the reference point (QR label) Mc.

  The factory code mark M3 is the same as the UF mark M1 and the light spot mark M2, and much labor is required to grasp the phase information of the input position data of the green tire G with respect to the vulcanizer 9. However, the input position data of the green tire G with respect to the vulcanizer 9 can also be phased with reference to the tire circumferential direction position of the reference point (QR label) Mc. Since the tire circumferential direction position in the vulcanizer 9 of the stamped portion for the factory code mark M3 is known, if the relative position in the tire circumferential direction between the reference point Mc and the factory code mark M3 is known, the phase information of this input position data is obtained. I can grasp.

  The arrangement position of the green tire G on the molding drum 8a of the molding machine 8 and the arrangement position of the splice position of the tire constituent member g on the green tire G become molding factors in the molding process that affect the UF waveform data. It also becomes a molding factor in the molding process that affects. The input position data of the green tire G with respect to the vulcanizer 9, that is, the arrangement position of the green tire G in the vulcanizer 9, becomes a vulcanization factor in the vulcanization process that affects the UF waveform data and affects the DB vector data. It also becomes a vulcanization factor in the vulcanization process that gives the.

  Therefore, the UF waveform data of each tire T and the phase information in the tire circumferential direction of the UF waveform data, the phase information in the tire circumferential direction of the forming factor in the molding process affecting the UF waveform data, and the UF waveform data are affected. The phase information in the tire circumferential direction of the vulcanization factor in the applied vulcanization process is stored in the storage unit 2b. Similarly, the DB vector data of each tire T and the phase information in the tire circumferential direction of the DB vector data, the phase information in the tire circumferential direction of the forming factor in the molding process that affects the DB vector data, and the DB vector data are affected. Is stored in the storage unit 2b.

  When analyzing the tire manufacturing information to improve the UF of the tire T, the molding of the UF waveform data is performed based on the UF waveform data stored in the storage unit 2b and the respective phase information stored. The magnitude of the degree of influence of the phase information in the tire circumferential direction of each factor and vulcanization factor is calculated by the calculation unit 2a. Then, based on the magnitude of the influence of the calculated phase information of the molding factor and the vulcanization factor, the molding factor and the vulcanization factor that make the UF value (maximum value) specified by the UF waveform data within an allowable range. Is calculated by the calculation unit 2a. Here, to make the UF value (maximum value) within the allowable range means to make the UF value (maximum value) smaller, and ideally to make it the minimum value even within the set allowable range.

  Specifically, the above-described tire manufacturing information for a plurality of (many) tires T is arranged and arranged with reference to the reference point Mc. And, for example, based on the degree of change in the UF value (maximum value) due to the difference in the phase information between cases where the phase information in the tire circumferential direction of the arrangement position of the green tire G in the molding drum 8a is mainly different. Thus, the magnitude of the influence of the phase information on the UF value (maximum value) is evaluated. For example, if the change in the UF value (maximum value) is large even though the change in the phase information is small, the degree of influence of the phase information is large, and the UF value (maximum value) in spite of the large change in the phase information. If the change in () is small, the degree of influence of this phase information is evaluated to be small and weighted.

  Similarly, the change in the UF value (maximum value) due to the difference in the phase information between the cases where the phase information in the tire circumferential direction of the arrangement position of the splice position of the tire constituent member g in the green tire G is mainly different. Based on the condition, the magnitude of the influence of the phase information on the UF value (maximum value) is evaluated. Similarly, the arrangement position of the green tire G in the vulcanizer 9 is based on the change in the UF value (maximum value) due to the difference in the phase information between cases where the phase information is mainly different. The magnitude of the influence of this phase information on the UF value (maximum value) is evaluated.

  Then, in consideration of the magnitude of the influence of the phase information of each molding factor and vulcanization factor, the phase information in the tire circumferential direction of each molding factor and vulcanization factor that makes the UF value (maximum value) within an allowable range is considered. A combination is calculated. The UF value (maximum value) is the amplitude (maximum value) of RFV raw waveform data. Therefore, the phase information of the arrangement position of the green tire G in the molding drum 8a (the reference point with respect to the predetermined position of the molding drum 8) that can make the UF value (maximum value) within a preset allowable range by the above analysis. Mc angle in the tire circumferential direction), phase information of the arrangement position of the splice position of the tire constituent member g in the green tire G (angle of the tire circumferential direction of the splice position with respect to the reference point Mc) and the green tire G in the vulcanizer 9 A combination of the phase information of the arrangement position (the angle in the tire circumferential direction of the reference point Mc with respect to the factory mark code mark M3) is calculated.

  In short, the phase of molding factors (arrangement position of the green tire G in the molding drum 8a, splice position of the tire component g in the green tire G) and vulcanization factor (arrangement position of the green tire G in the vulcanizer 9). Using the information, processing for selecting each phase information that cancels the amplitude of the RFV raw waveform data is performed. By this data processing, phase information that minimizes the amplitude of the RFV raw waveform data, that is, minimizes the UF value (maximum value) is specified.

  When analyzing the tire manufacturing information in order to improve the DB of the tire T, the DB vector data stored in the storage unit 2b and the respective phase information stored in the same manner as the analysis for improving the UF Based on the above, the magnitude of the degree of influence of the phase information in the tire circumferential direction of each of the forming factor and the vulcanizing factor on the DB vector data is calculated by the calculation unit 2a. Then, based on the magnitude of the influence of the phase information of each of the calculated molding factor and vulcanization factor, the molding factor and vulcanization for bringing the DB value (maximum value) specified by the DB beltle data into an allowable range. The phase information of each factor is calculated by the calculation unit 2a. Here, to make the DB value (maximum value) within the allowable range means to make the DB value (maximum value) smaller, and ideally to make it the minimum value even within the set allowable range.

  Specifically, the above-described tire manufacturing information for a plurality of (many) tires T is arranged and arranged with reference to the reference point Mc. And, for example, based on the degree of change in the DB value (maximum value) due to the difference in the phase information between cases where the phase information in the tire circumferential direction of the arrangement position of the green tire G on the molding drum 8a is mainly different. Thus, the magnitude of the influence of this phase information on the DB value (maximum value) is evaluated. Similarly, a change in DB value (maximum value) due to the difference in phase information between cases where the phase information in the tire circumferential direction of the arrangement position of the splice position of the tire constituent member g in the green tire G is mainly different. Based on the condition, the magnitude of the influence of this phase information on the DB value (maximum value) is evaluated. Similarly, with respect to the arrangement position of the green tire G in the vulcanizer 9, the DB value (maximum value) resulting from the difference in the phase information between cases where the phase information in the tire circumferential direction of the vulcanization factor is mainly different. ) To evaluate the magnitude of the influence of the phase information on the DB value (maximum value).

  Then, in consideration of the magnitude of the influence of the phase information of each molding factor and vulcanization factor, the phase information in the tire circumferential direction of each molding factor and vulcanization factor that makes the DB value (maximum value) within an allowable range is considered. A combination is calculated. The DB value (maximum value) is the vector length of the DB vector data f1 and f2 in FIG. Accordingly, the phase information of the arrangement position of the green tire G on the molding drum 8a (the tire at the reference point Mc with respect to the predetermined position of the molding drum 8), which allows the vector length to fall within a preset allowable range by the above analysis. (Angle in the circumferential direction), phase information of the arrangement position of the splice position of the tire constituent member g in the green tire G (angle of the tire circumferential direction of the splice position with respect to the reference point Mc) and the arrangement position of the green tire G in the vulcanizer 9 A combination of phase information (an angle in the tire circumferential direction of the reference point Mc with respect to the factory mark code mark M3) is calculated.

  According to this embodiment, the database Bs includes UF waveform data, DB vector data, the arrangement position of the green tire G in the vulcanizer 9, and the green in the molding machine 8 (molding drum 8a) for many tires T having the same specifications. The arrangement position of the tire G and the arrangement position of the splice position of the tire constituent member g in the green tire G are stored, and the phase information in the tire circumferential direction is also stored. Therefore, by using the data and information stored in the storage unit 2b, each of the forming factor and the vulcanizing factor for causing the UF value (maximum value) specified by the UF waveform data to be within the allowable range in the tire circumferential direction. The phase information is quickly calculated by the calculation unit 2a. Therefore, it is possible to improve the efficiency of analysis work for improving UF.

  Similarly, phase information in the tire circumferential direction of each of the forming factor and the vulcanizing factor that causes the DB value (maximum value) specified by the DB beltle data to be within an allowable range is quickly calculated by the calculation unit 2a. Therefore, it is possible to improve the efficiency of analysis work for improving the DB. That is, in the analysis of this embodiment, UF and DB can be compatible at a high level.

  The present invention can also be applied to analysis for improving UF by focusing only on UF. In this case, information and data regarding the DB become unnecessary. Or it can also apply to the analysis for paying attention only to DB and improving DB. In this case, information and data regarding the UF are not necessary.

DESCRIPTION OF SYMBOLS 1 Analysis apparatus 2 Server 2a Operation part 2b Storage part 3 Control part 4 Image acquisition machine (detector)
4a Image controller 5 Reading unit 6 Uniformity measuring device 6a Mark mark applying unit 7 Dynamic balance measuring device 7a Mark mark applying unit 8 Molding machine 8a Molding drum 9 Vulcanizing machine 9a Vulcanizing bladder 10 Vulcanizing mold 10a Sector mold 10b, 10c Side mold T Tire G Green tire G1 Primary green tire CL Tire axis g Tire component g1 Inner liner g2 Carcass g3 Bead g4 Side rubber g5 Belt g6 Belt cover g7 Tread rubber Mc Reference point (QR label)
M Mark Mark M1 UF Mark (Mark Mark)
M2 light mark (mark)
M3 Factory code mark (marker mark)
Bs database

Claims (4)

  In the molding process, green tires are molded using the same molding machine, and in the vulcanization process, the green tires are vulcanized using the same vulcanizer. Tire uniformity waveform data and tire circumferential phase information of the waveform data, tire circumferential phase information of the forming factor in the molding step affecting the waveform data, and the vulcanization affecting the waveform data The phase information in the tire circumferential direction of the vulcanization factor in the process is stored in a storage unit, and the shaping for the waveform data is performed based on the waveform data stored in the storage unit and the respective phase information. The magnitude of the degree of influence of the phase information of each factor and the vulcanization factor is calculated by the calculation unit, and based on the calculated result , The forming factors and analysis method of tire manufacturing information and calculates by the arithmetic unit each of the phase information of the vulcanization factor is the uniformity value specified by the waveform data within the allowable range.   In the molding process, green tires are molded using the same molding machine, and in the vulcanization process, the green tires are vulcanized using the same vulcanizer. Dynamic balance vector data of the tire, phase information in the tire circumferential direction of the vector data, phase information in the tire circumferential direction of a forming factor in the molding process that affects the vector data, and the addition that affects the vector data The phase information in the tire circumferential direction of the vulcanization factor in the vulcanization process is stored in a storage unit, and the vector data and the phase information are stored in the storage unit, and the vector data is stored in the storage unit. Calculate the magnitude of the influence of the phase information for each of the molding factor and the vulcanization factor Based on the calculated result, the calculation unit calculates the phase information of each of the forming factor and the vulcanization factor that allows the dynamic balance value specified by the beltle data to be within an allowable range. An analysis method of a tire manufacturing method.   For the plurality of tires, dynamic balance vector data of each tire and phase information in the tire circumferential direction of the vector data, tire circumferential phase information of a forming factor in the molding step that affects the vector data, and The phase information in the tire circumferential direction of the vulcanization factor in the vulcanization step affecting the waveform data is stored in the storage unit, the vector data stored in the storage unit and the respective phase information Based on the above, the magnitude of the degree of influence of the phase information of each of the molding factor and the vulcanization factor on the vector data is calculated by the calculation unit, and based on the calculated result, The forming factor and the vulcanizing factor that make the specified dynamic balance value within an allowable range The method of analyzing tire manufacturing information according to claim 1 which is calculated by each of said phase information calculation section.   The forming factor is at least an arrangement position of the green tire in a forming drum of the molding machine and an arrangement position of a splice position of a tire constituent member in the green tire, and the vulcanization factor is at least the vulcanization. The tire manufacturing information analyzing method according to any one of claims 1 to 3, which is an arrangement position of the green tire in a machine.

Images