Method for preparing a tire and system or plant for preparing tires

Abstract

The present invention relates to a method for preparing a tire comprising determining the vulcanization conditions of the unvulcanized tire and a system or plant for preparing tires to carry out the method according to the present invention. Figure to be published with the abstract: [Fig 2]

Description

Title of the invention: Method for preparing a tire and system or plant for preparing tires

[0001] The present invention relates to a method for preparing a tire comprising determining the vulcanization conditions of the unvulcanized tire and a system or plant for preparing tires in order to carry out the method according to the present invention.

[0002] In the tire industry, it is important to respond as best and as quickly as possible to the needs of car manufacturers, particularly in view of the transition to electric vehicles. This is why developing new tire preparation methods is essential in order to adapt to the needs and the latest regulations. Even if in recent years different methods have been developed, there is always the need to develop new methods, particularly for the optimization of manufacturing stages, the increase in tire quality and the reduction of greenhouse gas emissions, such as carbon dioxide.

[0003] Therefore, an object of the present invention is to develop an improved tire preparation method making it possible to prepare improved tires while limiting greenhouse gas emissions and being cost-effective.

[0004] Thus, the present invention relates to a method for preparing a tire, the method comprising

[0005] (a) preparing an unvulcanized tire, comprising assembling the tire components;

[0006] (b) associating the unvulcanized tire prepared according to (a) with a means identification means E, the identification means E comprising one or more information on one or more characteristics of said tire, obtaining a marked unvulcanized tire;

[0007] (c) determining the vulcanization conditions of the unvulcanized marked tire obtained according to (b), comprising

[0008] (cl) identify the unvulcanized tire to be vulcanized by means identification E associated with the tire according to (b);

[0009] (c.2) measure without contact at least one parameter of said tire marked not vulcanized influencing the vulcanization time of tires;

[0010] (c.3) calculate the vulcanization time of the unvulcanized tire as a function of at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time measured according to (c.2), obtaining the vulcanization time t(V) of the unvulcanized tire;

[0011] (d) vulcanizing the unvulcanized tire in a vulcanization mold during the vulcanization time t(V) determined according to (c).

[0012] Indeed, the method of the present invention makes it possible to reduce the curing time, because the safety measures, which correspond to the added curing time to compensate for the measurement error, generally applied as well known to those skilled in the art can be reduced or even eliminated. This therefore reduces the vulcanization (curing) time of the tires, the energy consumption and therefore reduces the CO2 emissions due to this type of process. This method by reducing the curing time makes it possible to be more efficient and therefore more profitable.

[0013] Preferably the assembly according to (a) is carried out on a manufacturing drum.

[0014] Preferably the tire components comprising a tire carcass, tire sidewalls and a tread. Preferably the assembly comprising placing the carcass on a manufacturing drum and placing the sidewalls and tread on the carcass.

[0015] For example, the placements are made relative to a reference point defined on the drum. Preferably, the reference point is on the manufacturing drum. Preferably, when placing the tread on the carcass, a seal is formed. Alternatively, the reference point is the seal formed on the tire (e.g. [Fig.l]).

[0016] Preferably the method further comprises providing the tire components used according to (a) comprising preparing the tire components, more preferably preparing the carcass components, preparing the sidewalls and preparing the tread.

[0017] Preferably the preparation of the tire components comprises the use of several unvulcanized tire preparation units, the preparation units being connected to each other by a network, the network being more preferably an internal network, for example an intranet, or an external network.

[0018] Preferably according to (a) the assembly of the tire components is automated.

[0019] Preferably (a) further comprises inflating the unvulcanized tire on the manufacturing drum to obtain a toroidal shape.

[0020] Preferably the association according to (b) is made by affixing the identification means E on one of the sidewalls of the unvulcanized tire prepared according to (a).

[0021] It is possible for the affixing of the identification means E according to (b) to be done on one of the sidewalls of the unvulcanized tire prepared according to (a), preferably at a distance dl from said reference point. An example of placement of E is illustrated in [Fig.l].

[0022] Preferably the association of the tire with the identification means E according to (b), more preferably the affixing of means E according to (b), is automated.

[0023] Preferably E is a label with a bar code, or a label with a QR code, or a radio tag (in English “RFID tag”).

[0024] Preferably, the barcode or QR code or radio tag is unique for each tire. This makes it possible to identify the tire to be vulcanized and to determine the vulcanization conditions individually and not just by batch.

[0025] Preferably the association according to (b) is made when the tire is positioned on a manufacturing drum.

[0026] Preferably the characteristic(s) of the tire according to (b) are the chemical composition of said tire and / or the chemical properties of said tire and / or the physical properties of said tire. The information(s) included in E make it possible to increase the traceability of a factory's tires.

[0027] Preferably (c. 1) comprises reading the identification means E, more preferably the bar code or the QR code or the radio tag. The identification of the unvulcanized marked tire before calculating the vulcanization time also makes it possible to update the information associated with this means E on the different manufacturing stages as the manufacturing process progresses.

[0028] Indeed, in the context of the present application, E is a means of identification specific to each tire manufactured according to the present invention, it comprises, or is associated in a processing system with, information on the different stages of manufacturing, analysis and / or quality control. Unlike the methods of the prior art, the optimization of the tire preparation process, like the vulcanization step, is no longer done by batch but individually.

[0029] Preferably the contactless measurement of the at least one parameter of said unvulcanized marked tire influencing the vulcanization time of tires according to (c.2) is done by laser scanning or tomography, more preferably by laser scanning.

[0030] Preferably the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time is the thickness of the tire shoulders and / or the thickness of the tire at the bead wires and / or the volume of the tire. More preferably the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time is the thickness of the tire shoulders and / or the thickness of the tire at the bead wires.

[0031] In the context of the present invention, the thickness of the shoulders of the tire is the maximum measured thickness of the shoulders of said unvulcanized marked tire (see [Fig.2]).

[0032] In the context of the present invention, the thickness of the tire at the bead wires (in English "beads") is the maximum measured thickness of said unvulcanized marked tire at the bead wires (see [Fig.2]).

[0033] The non-contact measurement according to (c.2) allows for high-precision measurements, preferably with an accuracy of 5 microns, and therefore reduces uncertainty. This will reduce the safety measures, which correspond to the added cooking time to compensate for the measurement error.

[0034] Preferably the contactless measurement according to (c.2) when the unvulcanized marked tire is placed on the tire manufacturing drum or on a robotic arm. Indeed, the measurement of the thickness of the tire shoulders and / or the thickness of the tire at the bead wires, and / or the volume of the tire can be done when the unvulcanized marked tire is placed on the robotic arm or directly on the manufacturing drum.

[0035] Preferably when the non-contact measurement is carried out when the unvulcanized marked tire is placed on a robotic arm, this robotic arm is also used for handling the unvulcanized marked tire (e.g. for positioning in a vulcanization mold or for entry or exit from an intermediate storage space).

[0036] Preferably the calculation of the vulcanization time t(V) according to (c.3) is automated.

[0037] Preferably the calculation of the vulcanization time t(V) according to (c.3) is carried out as a function of the tire shoulder thickness measured according to (c.2) and / or the tire thickness at the bead wires measured according to (c.2). Optionally, the calculation of the vulcanization time t(V) according to (c.3) is carried out as a function of the tire volume measured according to (c.2), in addition to being calculated as a function of the tire shoulder thickness measured according to (c.2) and / or the tire thickness at the bead wires measured according to (c.2).

[0038] Preferably the calculation of the vulcanization time t(V) according to (c.3) is carried out as a function

[0039] - of at least one parameter of said unvulcanized marked tire influencing the vulcanization time of tires being the thickness of the shoulders of the tire measured according to (c.2) and / or the thickness of the tire at the level of the bead wires measured according to (c.2) and / or the volume of the tire measured according to (c.2) and / or the volume of the tire measured according to (c.2), preferably being the thickness of the shoulders of the tire measured according to (c.2) and / or the thickness of the tire at the level of the bead wires measured according to (c.2);

[0040] - safety measures being the added cooking time to compensate for the error of measurement when measuring according to (c.2);

[0041] - optionally of the composition of the unvulcanized tire, more preferably thermal conductivity based on the composition of the unvulcanized tire;

[0042] - optionally the temperature of the unvulcanized tire to be vulcanized according to (d).

[0043] Preferably the calculation of the vulcanization time t(V) according to (c.3) is carried out according to one of the following formulas:

[0044] formula (1)

[0045] t(V) = A + Xb + Yc(l);

[0046] formula (2)

[0047] t(V) = A + Xb + Yc + Zd (2);

[0048] formula (3)

[0049] t(V) = A + Xb + Yc + Zd + We (3);

[0050] in which

[0051] A is a constant;

[0052] Xb is a function of the thickness of the shoulders of the tire measured according to (c.2) and / or the thickness of the tire at the level of the bead wires measured according to (c.2) and / or the volume of the tire measured according to (c.2), preferably of the thickness of the shoulders of the tire measured according to (c.2) and / or the thickness of the tire at the level of the bead wires measured according to (c.2);

[0053] Yd is a safety measure function being the added cooking time to compensate for the measurement error according to (c.2);

[0054] Zd is a function of the unvulcanized tire composition;

[0055] We is a function of the temperature of the unvulcanized tire to be vulcanized according to (d).

[0056] Preferably the vulcanization time t(V) is calculated according to (c.3) at a temperature T and the vulcanization according to (d) is carried out at the temperature T. The temperature T is known to those skilled in the art and may vary depending on the type of tires manufactured.

[0057] Preferably the temperature T is in the range of 140 to 300°C, more preferably in the range of 150 to 200°C.

[0058] Preferably, the determination of the vulcanization conditions of the unvulcanized marked tire according to (c) is carried out using an electronic data processing means TED. This means can, for example, use artificial intelligence.

[0059] Preferably the method comprises the use of one or more digital twins.

[0060] Preferably, the one or more digital twins are based on digital tire design data, data collected from the Internet Objects and a human-machine interface that correlates and presents data to support decision-making. Preferably, decision-making is automated.

[0061] Preferably, the method of the present invention further comprises one or more intermediate storage steps. Preferably, the one or more intermediate storage steps are automated.

[0062] Preferably the method comprises an intermediate step S(I) of storage before (d) and after (b). Preferably (c) is carried out before S(I) or after S(I), during the handling of the unvulcanized tire on a robotic arm.

[0063] Preferably, when a robotic arm is used according to (c.1.1), the method comprises removing the unvulcanized marked tire, placing it on a conveyor (conveyor belt) and taking charge of the tire with said robotic arm.

[0064] Preferably the robotic arm is connected to a network and possibly with unvulcanized tire preparation units, more preferably the tire preparation units described herein.

[0065] Preferably, the network is an internal network, such as an intranet, or an external network, more preferably an internal network.

[0066] Preferably the tire mold used according to (d) comprises two lateral parts, each serving for the external molding of a sidewall of the tire and a peripheral crown divided into at least two segments, more preferably divided into 3 to 20 segments, more preferably into 5 to 15 segments, more preferably into 6 to 10 segments.

[0067] Preferably during step (d) a vulcanization bladder is used in the vulcanization mold, in particular to mold the internal shape of the tire.

[0068] In the context of the present invention, the term "internal shape" relating to the mold means the shape of the internal part of the mold, namely the internal part of the mold which receives and is in contact with the unvulcanized marked tire.

[0069] In the context of the present invention, the peripheral crown is intended to mold the radially external surface of the tread.

[0070] Optionally, the vulcanization mold is connected to a network, namely an internal network, such as an intranet, or an external network, and by means of electronic data processing TED. The vulcanization mold may further be connected to the tire preparation units defined in this invention.

[0071] Preferably the method of the present invention is a continuous or semi-continuous method.

[0072] Optionally, the method comprises the use of one or more treadmills.

[0073] The present invention further relates to a system or plant for carrying out the tire preparation method according to the present invention, comprising

[0074] a tire assembly unit for manufacturing an unvulcanized tire;

[0075] a tire identification means E;

[0076] a means for associating the unvulcanized tire with E;

[0077] a means of reading E;

[0078] a means for contactless measurement of at least one parameter of said tire marked unvulcanized influencing the vulcanization time of tires, preferably being the thickness of the tire shoulders and / or the thickness of the tire at the bead wires and / or the volume of the tire;

[0079] a means for calculating the vulcanization time of the unvulcanized marked tire;

[0080] a vulcanization unit comprising the vulcanization mold and a heating means for vulcanization.

[0081] Preferably the system or factory further comprises at least one tire manufacturing drum.

[0082] Preferably the system or factory further comprises means for electronically processing the TED data for determining the vulcanization conditions of the unvulcanized marked tire.

[0083] Preferably the system or plant further comprises at least one means for supplying the tire components. The at least one means for supplying the tire components preferably being several units for preparing unvulcanized tires.

[0084] Preferably the preparation units comprise one or more mixing units, one or more extrusion units, one or more cutting units, one or more bead / rod winding units (in English "beads") and apex winding units, and / or one or more assembly units.

[0085] Preferably E is a label with a bar code, or a label with a QR code, or a radio tag (in English “RFID tag”).

[0086] Preferably the system or factory further comprises means for editing E.

[0087] Preferably the means for non-contact measurement of the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time is a laser measuring device or a tomograph.

[0088] Preferably the system or factory further comprises a network allowing the connection between at least one of the means included in said system or said factory and at least one of the units included in said system or said factory, more preferably an internal network of the intranet type.

[0089] Preferably, the system or plant further comprises one or more conveyor belts.

[0090] Preferably the system or plant further comprises at least one tire storage unit, more preferably at least one unvulcanized tire storage unit and at least one vulcanized tire storage unit.

[0091] The present invention further relates to a vulcanized tire obtainable or obtainable by a method according to the present invention.

[0092] In the context of the present invention, the term "digital twin" refers to a virtual representation of a product or process that makes it possible to understand and predict its physical equivalents in order to improve an object or method.

[0093] The present invention is further illustrated by the following set of embodiments and combinations of embodiments resulting from the dependencies and backreferences as indicated. In particular, it should be noted that in each case where a range of embodiments is mentioned, for example in the context of a term such as "The method of any one of embodiments 1 to 3", each embodiment in that range is intended to be explicitly disclosed to those skilled in the art, i.e., the wording of that term should be understood by those skilled in the art to be synonymous with "the method of any one of embodiments 1, 2 and 3".Further, it is explicitly noted that the following set of embodiments represents a suitably structured portion of the general description directed to preferred aspects of the present invention and, therefore, suitably supports, but does not represent, the claims of the present invention.

[0094] According to embodiment 1 of the present invention, a method for preparing a tire, the method comprising

[0095] (a) preparing an unvulcanized tire, comprising assembling the tire components;

[0096] (b) combining the unvulcanized tire prepared according to (a) with a means identification means E, the identification means E comprising one or more information on one or more characteristics of said tire, obtaining a marked unvulcanized tire;

[0097] (c) determining the vulcanization conditions of the unvulcanized marked tire obtained according to (b), comprising

[0098] (cl) identify the unvulcanized tire to be vulcanized by means identification E associated with the tire according to (b);

[0099] (c.2) measure without contact at least one parameter of said tire marked no vulcanized influencing the vulcanization time of tires;

[0100] (c.3) calculate the vulcanization time of the unvulcanized tire as a function of at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time measured according to (c.2), obtaining the vulcanization time t(V) of the unvulcanized tire;

[0101] (d) vulcanizing the unvulcanized tire in a vulcanization mold during the vulcanization time t(V) determined according to (c).

[0102] Embodiment 2: The method according to embodiment 1, in which the assembly according to (a) is carried out on a manufacturing drum.

[0103] Embodiment 3: The method according to embodiment 1 or 2, wherein the tire components comprise a tire carcass, tire sidewalls and a tread, preferably the assembly comprises placing the carcass on a manufacturing drum and placing the sidewalls and tread on the carcass.

[0104] Embodiment 4: The method according to any of embodiments 1 to 3, wherein according to (a) the assembly of the tire components is automated.

[0105] Embodiment 5: The method according to any one of embodiments 1 to 4, in which the association according to (b) is made by affixing the identification means E on one of the sidewalls of the unvulcanized tire prepared according to (a).

[0106] Embodiment 6: The method according to any one of embodiments 1 to 5, in which the association of the tire with the identification means E according to (b) is automated.

[0107] Embodiment 7: The method according to any one of embodiments 1 to 6, in which E is a label with a bar code, or a label with a QR code, or a radio-label (in English “RFID tag”).

[0108] Embodiment 8: The method according to any of embodiments 1 to 7, wherein the association according to (b) is made when the tire is positioned on a manufacturing drum.

[0109] Embodiment 9: The method according to any one of embodiments 1 to 8, wherein the characteristic(s) of the tire according to (b) are the chemical composition of said tire and / or the chemical properties of said tire and / or the physical properties of said tire.

[0110] Embodiment 10: The method according to any one of embodiments 1 to 9, in which (cl) comprises reading the identification means E, preferably the bar code or the QR code or the radio tag.

[0111] Embodiment 11: The method according to any one of embodiments 1 to 10, in which the contactless measurement of the at least one parameter of said unvulcanized marked tire influencing the vulcanization time of tires according to (c.2) is done by laser scanning or tomography, preferably by laser scanning.

[0112] Embodiment 12: The method according to any of the embodiments 1 to 11, wherein the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time is the tire shoulder thickness and / or the tire thickness at the bead wires and / or the tire volume, preferably wherein the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time is the tire shoulder thickness and / or the tire thickness at the bead wires.

[0113] Embodiment 13: The method according to any of the embodiments 1 to 12, wherein the non-contact measurement according to (c.2) is carried out when the unvulcanized marked tire is placed on a tire manufacturing drum, preferably the manufacturing drum according to embodiment 2, or on a robotic arm.

[0114] Embodiment 14: The method according to any of the embodiments 1 to 13, in which the calculation of the vulcanization time t(V) according to (c.3) is automated.

[0115] Embodiment 15: The method according to any of the embodiments 1 to 14, in which the calculation of the vulcanization time t(V) according to (c.3) is carried out as a function of the at least one parameter of said tire marked unvulcanized influencing the vulcanization time of tires, preferably as a function of the thickness of the shoulders of the tire measured according to (c.2) and / or the thickness of the tire at the level of the bead wires measured according to (c.2).

[0116] Embodiment 16: The method according to any of the embodiments 1 to 15, in which the calculation of the vulcanization time t(V) according to (c.3) is carried out as a function

[0117] - of at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time being the thickness of the tire shoulders measured according to (c.2) and / or the thickness of the tire at the level of the bead wires measured according to (c.2) and / or the volume of the tire measured according to (c.2);

[0118] - safety measures being the added cooking time to compensate for the error of measurement when measuring according to (c.2);

[0119] - optionally of the composition of the unvulcanized tire, preferably of thermal conductivity based on the composition of the unvulcanized tire;

[0120] - optionally the temperature of the unvulcanized tire to be vulcanized according to (d).

[0121] Embodiment 17: The method according to embodiment 16, in which the calculation of the vulcanization time t(V) according to (c.3) is carried out according to one of the following formulas:

[0122] the formula ( 1 )

[0123] t(V) = A + Xb + Yc(l);

[0124] formula (2)

[0125] t(V) = A + Xb + Yc + Zd (2);

[0126] formula (3)

[0127] t(V) = A + Xb + Yc + Zd + We(3);

[0128] in which

[0129] A is a constant;

[0130] Xb is a function of the thickness of the shoulders of the tire measured according to (c.2) and / or the thickness of the tire at the level of the bead wires measured according to (c.2) and / or the volume of the tire measured according to (c.2), preferably of the thickness of the shoulders of the tire measured according to (c.2) and / or the thickness of the tire at the level of the bead wires measured according to (c.2);

[0131] Yd is a safety measure function being the added cooking time to compensate for the measurement error according to (c.2);

[0132] Zd is a function of the unvulcanized tire composition;

[0133] We is a function of the temperature of the unvulcanized tire to be vulcanized according to (d).

[0134] Embodiment 18: The method according to any one of embodiments 1 to 17, wherein the vulcanization time t(V) is calculated according to (c.3) at a temperature T and the vulcanization according to (d) is carried out at the temperature T.

[0135] Embodiment 19: The method according to embodiment 18, wherein the temperature T is in the range of 140 to 300°C, preferably in the range of 150 to 200°C.

[0136] Embodiment 20: The method according to any one of embodiments 1 to 19 further comprises a storage step.

[0137] Embodiment 21: The method according to embodiment 20, wherein (c) is performed before the storage step, or after the storage step, when handling the unvulcanized tire on a robotic arm.

[0138] Embodiment 22: A system or plant for carrying out the tire preparation method according to any one of embodiments 1 to 21, comprising

[0139] a tire assembly unit for manufacturing an unvulcanized tire;

[0140] a tire identification means E;

[0141] a means for associating the unvulcanized tire with E;

[0142] a means of reading E;

[0143] a means for non-contact measurement of at least one parameter of said unvulcanized marked tire influencing the vulcanization time of tires, preferably being the thickness of the shoulders of the tire and / or the thickness of the tire at the level of the bead wires and / or the volume of the tire;

[0144] a vulcanization unit comprising the vulcanization mold and a heating means for vulcanization.

[0145] Embodiment 23: A vulcanized tire obtainable or obtainable by a method according to any one of embodiments 1 to 21. Description of the figures

[0146] [Fig.l] represents a drawing of a view from one side of the unvulcanized tire 1 marked with an identification means E (label with a bar code, label a QR code or radio-label) and placed on a tire manufacturing drum obtained according to (b) of the method of the present invention. In the figure are represented the tread 3, the sidewall 5, the identification means E and the reference point PR on the tire.

[0147] [Fig.2] represents a section of an unvulcanized tire where we see the (maximum) thickness of the shoulder of the tire el and the (maximum) thickness of the tire at the level of the bead wires preferably measured by a laser measuring device.

Claims

Claims

1. A method for preparing a tire, the method comprising (a) preparing an unvulcanized tire, comprising assembling the tire components; (b) associating the unvulcanized tire prepared according to (a) with an identification means E, the identification means E comprising one or more information on one or more characteristics of said tire, obtaining an unvulcanized marked tire; (c) determining the vulcanization conditions of the unvulcanized marked tire obtained according to (b), comprising (c1) identifying the unvulcanized tire to be vulcanized by means of the identification means E associated with the tire according to (b); (c.2) measuring without contact at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time; (c.3) calculating the vulcanization time of the unvulcanized tire as a function of the at least one parameter of said tire marked unvulcanized influencing the tire vulcanization time measured according to (c.2), obtaining the vulcanization time t(V) of the unvulcanized tire; (d) vulcanizing the unvulcanized tire in a vulcanization mold during the vulcanization time t(V) determined according to (c).

2. The method according to claim 1, wherein the association of the tire with the identification means E according to (b), preferably by affixing the identification means E to one of the sidewalls of the unvulcanized tire prepared according to (a), is automated.

3. The method according to claim 1 or 2, wherein E is a label with a bar code, or a label with a QR code, or a radio tag.

4. The method according to any one of claims 1 to 3, wherein the non-contact measurement of the at least one parameter of said unvulcanized marked tire influencing the vulcanization time of tires according to (c.2) is done by laser scanning or tomography, preferably by laser scanning.

5. The method according to any one of claims 1 to 4, wherein the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time is the tire shoulder thickness and / or the tire bead thickness and / or the tire volume, preferably wherein the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time is the tire shoulder thickness and / or the tire bead thickness.

6. The method according to any one of claims 1 to 5, wherein the non-contact measurement according to (c.2) is carried out when the unvulcanized marked tire is placed on a tire-building drum or on a robotic arm.

7. The method according to any one of claims 1 to 6, wherein the calculation of the vulcanization time t(V) according to (c.3) is carried out as a function of - the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time being the tire shoulder thickness measured according to (c.2) and / or the tire thickness at the bead wires measured according to (c.2) and / or the tire volume measured according to (c.2); - safety measures being the added curing time to compensate for the measurement error according to (c.2); - optionally the composition of the unvulcanized tire, preferably the thermal conductivity based on the composition of the unvulcanized tire; - optionally the temperature of the unvulcanized tire to be vulcanized according to (d).

8. The method according to claim 7, wherein the calculation of the vulcanization time t(V) according to (c.3) is carried out according to one of the following formulas: formula (1) t(V) = A + Xb + Yc (1); formula (2) t(V) = A + Xb + Yc + Zd (2); formula (3) t(V) = A + Xb + Yc + Zd + We (3); in which A is a constant; Xb is a function of the tire shoulder thickness measured according to (c.2) and / or the tire thickness at the bead wires measured according to (c.2) and / or the tire volume measured according to (c.2), preferably the tire shoulder thickness measured according to (c.2) and / or the tire thickness at the bead wires measured according to (c.2); Yd is a safety measure function being the added curing time to compensate for the measurement error according to (c.2); Zd is a function of the unvulcanized tire composition; and We is a function of the temperature of the unvulcanized tire to be vulcanized according to (d).

9. The method according to any one of claims 1 to 8, wherein the vulcanization time t(V) is calculated according to (c.3) at a temperature T and the vulcanization according to (d) is carried out at the temperature T.

10. A system or plant for carrying out the tire preparation method according to any one of claims 1 to 9, comprising a tire assembly unit for manufacturing an unvulcanized tire; tire identification means E; means for associating the unvulcanized tire with E; means for reading E; means for contactless measurement of the at least one parameter of said unvulcanized marked tire influencing the tire vulcanization time, preferably being the tire shoulder thickness and / or the tire bead thickness and / or the tire volume; means for calculating the vulcanization time of the unvulcanized marked tire; a vulcanization unit comprising the vulcanization mold and heating means for vulcanization.

11. A vulcanized tire obtainable or obtainable by a method according to any one of claims 1 to 9.

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