A method for generating a cross-sectional scan image of a tire

Abstract

The application discloses a kind of generation methods of tire section scanning image, according to the structure design parameter of tire from each half component of tire determines the target half component needing to be dyed;According to the predetermined mixing procedure, the rubber of each half component is mixed, wherein, in the process of the rubber of the target half component is mixed, specified pigment is added to dye;According to the predetermined tire forming procedure, each rubber after completing the rubber mixing is processed, and the tire to be scanned is obtained;Cutting is carried out at the specified position of the tire to be scanned, and the tire section scanning image is generated after scanning the section after cutting, since the target half component is dyed by pigment, the distinction of each half component of tire is increased, so that the tire section scanning image with more obvious boundary line can be generated, and then clearer tire structure can be obtained, to improve tire design level.

Description

Technical Field

[0001] This application relates to the field of tire manufacturing technology, and more specifically, to a method for generating a tire cross-section scan image. Background Technology

[0002] As the only component of a car in contact with the ground, the tire is one of the most critical load-bearing parts, making tire structural analysis increasingly necessary. Cross-sectional scanning after cutting the tire is a common method for obtaining information about its structure. Currently, cross-sectional scanning primarily improves accuracy by using a clamp to restrain the cut tire section or by treating the tire section with a sulfur solution.

[0003] The method of using a slot to constrain the cut tire cross-section before cross-sectional scanning can eliminate cross-sectional shape distortion caused by the release of internal stress, thus improving the accuracy of cross-sectional inspection of the tire's internal structure. However, because carbon black is added during the rubber compounding process of conventional tires, the entire tire is often predominantly black, with similar colors between different parts and indistinct boundaries. This makes it difficult and prone to errors when using cross-sectional scanning images to reconstruct the material distribution map.

[0004] Treating the tire cross-section with sulfur solution can improve the color difference between some components, resulting in a more easily analyzed tire cross-section. However, this method has no significant effect on the boundary lines between halves of the tire with the same or similar rubber compound formulations; the boundary lines remain blurred, which still poses some difficulties in reconstructing the material distribution map.

[0005] Therefore, how to increase the differentiation between the different parts of the tire, thereby generating tire cross-section scan images with more obvious dividing lines, is a technical problem that needs to be solved. Summary of the Invention

[0006] This invention provides a method for generating a tire cross-section scan image to increase the distinguishability of different parts of the tire, thereby generating a tire cross-section scan image with more obvious dividing lines.

[0007] The method includes:

[0008] Based on the tire's structural design parameters, determine the target half-parts that need to be dyed from among the various half-parts of the tire;

[0009] The rubber materials of each of the semi-parts are mixed according to the preset mixing process, wherein a specified pigment is added for coloring during the mixing process of the rubber materials of the target semi-parts.

[0010] Each rubber compound that has been mixed is processed according to a preset tire forming process to obtain a tire to be scanned;

[0011] A cut is made at a designated location on the tire to be scanned, and the cut cross-section is scanned to generate a tire cross-section scan image.

[0012] In some embodiments, the target half-parts to be dyed are determined from the various half-parts of the tire according to the tire's structural design parameters, specifically:

[0013] The hierarchical distribution of each of the semi-components on the tire cross-section is determined according to the structural design parameters;

[0014] The target half-component is determined from each of the half-components according to the hierarchical distribution and the preset selection rules;

[0015] The preset selection rule is to alternate between the target half-part and the half-part that does not need to be stained in the hierarchical distribution.

[0016] In some embodiments, during the rubber compounding process, each of the target half-parts is dyed with one of the specified pigments, and each of the specified pigments corresponds to one or more of the target half-parts.

[0017] In some embodiments, the mass of the designated pigment is 1.3%-2.75% of the mass of the adhesive to be dyed.

[0018] In some embodiments, the designated pigment includes toluidine red, permanent yellow, or phthalocyanine blue.

[0019] In some embodiments, after the specified pigment is added during the rubber compounding process of the target half-part, the rubber compound is compounded by mechanical blending.

[0020] In some embodiments, the preset tire forming process includes a preset semi-finished product forming process, a preset tire forming process, and a preset vulcanization process. The rubber compounds that have completed the rubber compounding are processed according to the preset tire forming process to obtain the tire to be scanned. Specifically:

[0021] According to the preset semi-finished product molding process, the rubber compound that has been mixed is molded to obtain each molded semi-part.

[0022] According to the preset tire forming process, each of the forming half parts is subjected to secondary forming processing to obtain a formed tire blank;

[0023] The pre-formed tire blank is vulcanized according to the preset vulcanization process to obtain the tire to be scanned.

[0024] In some embodiments, the vulcanization parameters of the preset vulcanization process are determined based on the chemical properties of the specified pigment.

[0025] By applying the above technical solutions, the target half-parts that need to be dyed are determined from the various half-parts of the tire according to the tire's structural design parameters; the rubber compounds of each half-part are mixed according to a preset mixing process, wherein a specified pigment is added for dyeing during the mixing process of the rubber compound of the target half-part; the rubber compounds that have completed the mixing process are processed according to a preset tire forming process to obtain the tire to be scanned; the tire to be scanned is cut at a specified position, and the cut cross-section is scanned to generate a tire cross-section scanning image. Since the target half-parts are dyed with pigment, the distinction between the various half-parts of the tire is increased, thereby generating a tire cross-section scanning image with more obvious dividing lines, thus obtaining a clearer tire structure and improving the tire design level. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A flowchart illustrating a method for generating a tire cross-section scanning image according to an embodiment of the present invention is shown.

[0028] Figure 2 A schematic flowchart of a method for generating a tire cross-section scanning image according to another embodiment of the present invention is shown. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] This application provides a method for generating a tire cross-section scan image, such as... Figure 1 As shown, the method includes the following steps:

[0031] Step S101: Based on the tire's structural design parameters, determine the target half-parts that need to be dyed from the tire's various half-parts.

[0032] In this embodiment, the tire's semi-finished components are, for example, the tire tread, base, sidewall, shoulder pad, belt layer, and crown belt layer. Assembling these semi-finished components according to the tire's structural design parameters yields a pre-formed tire blank. The tire's structural design parameters characterize the location of each semi-finished component within the tire. To increase the distinguishability of each semi-finished component, some of them are dyed. The target semi-finished component can be determined from among these components based on its location. Depending on different user needs, one or more target semi-finished components can be identified. For example, if the user only needs to determine the material distribution map of one specific semi-finished component within the tire, then one target semi-finished component can be identified; if the user needs to determine the material distribution map of two specific semi-finished components within the tire, then two target semi-finished components can be identified.

[0033] In addition, the target half-part can be a half-part distinguished by type, such as the belt layer and the coronal belt layer as the target half-part; the target half-part can also be one or more layers of the same type of half-part. For example, if the belt layer has two layers and the coronal belt layer has two layers, then one belt layer and one coronal belt layer can be used as the target half-part.

[0034] Step S102: The rubber materials of each of the semi-parts are mixed according to the preset mixing process, wherein a specified pigment is added for dyeing during the mixing process of the rubber materials of the target semi-parts.

[0035] In this embodiment, to ensure the rubber compound possesses excellent physical and mechanical properties and good dynamic performance, it is necessary to mix the rubber compounds for each half-part. To dye the target half-part, a specified pigment is added during the rubber compounding process.

[0036] The main equipment used for rubber compound mixing includes internal mixers and open mills. Optionally, pre-set mixing processes may include:

[0037] Plasticizing: Weigh natural rubber and environmentally friendly plasticizer and place them in a two-roll mill for plasticizing to obtain natural plasticized rubber;

[0038] First stage of mixing: Natural plasticized rubber and rare earth butadiene rubber are put into an internal mixer. Under the condition of 50 rpm, the rubber is mixed to 140°C and the top float is lifted for 90-110 seconds. Then, mullite fiber, silica, silane coupling agent and 2 / 3 of the carbon black are added to the internal mixer. Under the condition of 60 rpm and 150°C, the top float is lifted for 80-100 seconds. Then, the internal mixer speed is adjusted to 60 rpm and the temperature is reduced to 130°C for mixing. After the mixture is discharged, pressed into sheets and cooled, it is crushed and sieved to obtain first stage of mixed rubber granules.

[0039] Two-stage mixing: Take the first-stage compound rubber granules and place them in a mixer. Then add antioxidant 6PPD, antioxidant TMQ, microcrystalline wax, activator, microcrystalline wax and the remaining 1 / 3 of carbon black for mixing. After pressing and cooling, crush them in a pulverizer with a speed of 500-600 r / min, and then put them into a mixer for mixing to obtain the two-stage compound rubber.

[0040] Final mixing: After cooling and standing for 4-8 hours, the second-stage compound is put into an internal mixer, and aramid short fibers are added. When the aramid short fibers are completely integrated into the rubber, insoluble sulfur, accelerator TBBS, accelerator DPG and anti-scorching agent CTP are added. Final mixing is then carried out to obtain the final compound.

[0041] Cooling and resting: After the final rubber compound is sheeted out of the open mill, it is cooled by a cooling water tank and a fan, and then rested for 8 hours before it can be put into use, thus completing the preparation of the compound.

[0042] For the above-mentioned preset mixing process, the specified pigment can be added during the first or second stage of mixing. Different types of tires can use different rubber mixing processes. Those skilled in the art can add the specified pigment at different stages of different rubber mixing processes according to the actual situation.

[0043] In order to reliably increase the distinguishability of each half-part, in some embodiments of this application, during the rubber compounding process, each target half-part is dyed with a specified pigment, and each specified pigment corresponds to one or more target half-parts.

[0044] In this embodiment, each target half-part is dyed with a designated pigment, which ensures that each target half-part presents a bright color after dyeing and can form a clear dividing line with other undyed half-parts. Each target half-part can be dyed with the same designated pigment, or different target half-parts can be dyed with different designated pigments.

[0045] To ensure good dyeing results, in some embodiments of this application, the mass of the specified pigment is 1.3%-2.75% of the mass of the adhesive to be dyed. Those skilled in the art can also flexibly use other pigment masses according to actual needs.

[0046] To ensure good dyeing results, in some embodiments of this application, the specified pigment includes toluidine red, permanent yellow, or phthalocyanine blue.

[0047] In this embodiment, toluidine red, permanent yellow, and phthalocyanine blue can be clearly distinguished from the black of carbon black, thereby improving the distinguishability of each half of the component. Those skilled in the art can also flexibly use other types of pigments according to actual needs, which does not affect the scope of protection of this application.

[0048] To ensure good dyeing results, in some embodiments of this application, after adding the specified pigment during the rubber compounding process of the target half-part, the rubber compound is compounded by mechanical blending.

[0049] In this embodiment, the mechanical blend is a blend obtained by mixing melts of different polymers using rollers, an extruder, or a high-intensity mixer. The blending temperature is higher than the viscous flow temperature of the amorphous polymer component in the mixture and higher than the melting point of the crystalline polymer component. Mechanical blending can uniformly mix the specified pigment with the target semi-finished part, ensuring good dispersion of the pigment in the compound and transparent color, thereby guaranteeing a good dyeing effect.

[0050] Step S103: Process each rubber compound that has completed the rubber compounding according to the preset tire forming process to obtain the tire to be scanned.

[0051] In this embodiment, different types of tires can be processed according to different tire forming processes for each rubber compound that has been mixed. The tire forming process is existing technology in the field and will not be described in detail here.

[0052] Step S104: Cut at a designated location on the tire to be scanned, and scan the cut cross-section to generate a tire cross-section scan image.

[0053] In this embodiment, a cross-section is obtained by cutting at a designated location on the tire to be scanned, and the cross-section is then scanned to generate a tire cross-section scan image. Specifically, a cross-section scanning instrument can be used to scan and photograph the tire cross-section, and the tire cross-section scan image can be fitted based on the scanned photograph.

[0054] Optionally, the cutting process can be as follows: a first cut is made along the radial direction of the tire using a cutting blade, and a second cut is made along the radial direction of the tire after the first cut is completed. The cutting surfaces of the first cut and the second cut have a set distance along the circumferential direction of the tire, and the tire portion between the cutting surfaces of the first cut and the second cut is a tire cross-section sample.

[0055] Optionally, a laser can be used as a cutting tool to cut at a designated location on the tire to be scanned.

[0056] By applying the above technical solutions, the target half-parts that need to be dyed are determined from the various half-parts of the tire according to the tire's structural design parameters; the rubber compounds of each half-part are mixed according to a preset mixing process, wherein a specified pigment is added for dyeing during the mixing process of the rubber compound of the target half-part; the rubber compounds that have completed the mixing process are processed according to a preset tire forming process to obtain the tire to be scanned; the tire to be scanned is cut at a specified position, and the cut cross-section is scanned to generate a tire cross-section scanning image. Since the target half-parts are dyed with pigment, the distinction between the various half-parts of the tire is increased, thereby generating a tire cross-section scanning image with more obvious dividing lines, thus obtaining a clearer tire structure and improving the tire design level.

[0057] This application also proposes a method for generating tire cross-section scanning images, such as... Figure 2 As shown, it includes the following steps:

[0058] Step S201: Determine the layer distribution of each of the semi-components on the tire cross-section based on the tire's structural design parameters.

[0059] In this embodiment, each half-component can be distributed in layers on the tire cross-section. The layer distribution of each half-component on the tire cross-section can be determined according to the tire's structural design parameters, that is, which half-component is each layer.

[0060] Step S202: Determine the target half-component from each of the half-components according to the hierarchical distribution and preset selection rules.

[0061] In this embodiment, the concept of intermittent dyeing is adopted to select the target half-part that needs to be dyed. That is, in the cross-section, one layer is dyed while the adjacent layer is not dyed. Therefore, the preset selection rule is to alternate the target half-part with the half-part that does not need to be dyed in the layer distribution. The target half-part can be determined from each half-part according to the layer distribution and the preset selection rule. Since the target half-part is alternated with the half-part that does not need to be dyed in the layer distribution, the distinguishability of each half-part of the tire can be increased, thereby generating a clearer dividing line.

[0062] For example, if the layered structure consists of two carcass layers, two belt layers, and two crown band layers, then the first carcass layer is unstained, the second carcass layer is stained, the first belt layer is unstained, the second belt layer is stained, the first crown band layer is unstained, and the second crown band layer is stained. In other words, the target half-part consists of the second carcass layer, the second belt layer, and the second crown band layer. Alternatively, it could be:

[0063] The first layer of the fetal body is stained, the second layer of the fetal body is not stained, the first layer of the belt layer is stained, the second layer of the belt layer is not stained, the first layer of the crown band layer is stained, and the second layer of the crown band layer is not stained. That is, the target half-part consists of the first layer of the fetal body, the first layer of the belt layer, and the first layer of the crown band.

[0064] Step S203: The rubber materials of each of the semi-parts are mixed according to the preset mixing process, wherein a specified pigment is added for dyeing during the mixing process of the rubber materials of the target semi-parts.

[0065] In this embodiment, the specific implementation of step S203 can be referred to step S102, and will not be repeated here.

[0066] Step S204: The rubber compound that has been mixed is molded according to the preset semi-finished product molding process to obtain each molded semi-part.

[0067] Optionally, the pre-set semi-finished product forming process may include: Step 1, pressing the tire surface: adjusting the temperature to 400-410℃; Step 2, pressing the tire sidewall: adjusting the temperature to 390-400℃; Step 3, pressing the rubber pad: adjusting the temperature to 430-440℃; Step 4, pressing the rubber core: adjusting the temperature to 380-390℃.

[0068] Step S205: Perform secondary molding processing on each of the molding half parts according to the preset tire molding process to obtain the molded tire blank.

[0069] Optionally, the preset tire forming process may include: first, putting in the forming half-parts; second, adding auxiliary agents; and third, assembly: adjusting the temperature to 270-290℃, maintaining it for 40-60 minutes, and then assembling.

[0070] Step S206: The molded tire blank is vulcanized according to the preset vulcanization process to obtain the tire to be scanned.

[0071] Specifically, the formed tire blank can be loaded into a vulcanizing machine. There is a mold on the outside and a bladder inside. During vulcanization, supersaturated steam and nitrogen are injected into the vulcanizing bladder. The expansion pressure of the vulcanizing bladder makes the tire blank fill the entire mold. Under the combined action of the mold and the bladder, the tire vulcanization is completed through a certain time, temperature and pressure.

[0072] To ensure good dyeing results, in some embodiments of this application, the vulcanization parameters (such as time, temperature, and pressure) of the preset vulcanization process are determined based on the chemical properties of the specified pigment.

[0073] Specifically, different pigments have different chemical properties. For example, toluidine red has a melting point of 258°C, phthalocyanine blue has a melting point of 600°C, and permanent yellow has a melting point of 320-328°C. Therefore, for toluidine red, due to its relatively low melting point, the vulcanization temperature can be lower, and a lower pressure and shorter time can be set; for phthalocyanine blue, due to its relatively high melting point, the vulcanization temperature can be higher, and a higher pressure and longer time can be set.

[0074] Step S207: Cut at a designated location on the tire to be scanned, and scan the cut cross-section to generate a tire cross-section scan image.

[0075] In this embodiment, the specific implementation of step S207 can be referred to step S104, and will not be repeated here.

[0076] By applying the above technical solutions, the target half-parts and the half-parts that do not need to be stained are alternated in the hierarchical distribution, which increases the distinction between the various half-parts of the tire. This allows for the generation of tire cross-section scan images with more obvious dividing lines, thereby obtaining a clearer tire structure and improving the tire design level.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for generating a tire cross-section scan image, characterized in that, The method includes: Based on the tire's structural design parameters, the target half-parts that need to be dyed are determined from the various half-parts of the tire. Specifically, this includes: determining the layer distribution of each half-part on the tire cross-section based on the structural design parameters; determining the target half-part from each half-part based on the layer distribution and a preset selection rule. The half-part includes the tread, base, sidewall, shoulder pad, belt layer, and crown belt layer. The preset selection rule is to alternate the target half-part with the half-part that does not need to be dyed in the layer distribution. The rubber materials of each of the semi-parts are mixed according to the preset mixing process, wherein a specified pigment is added for coloring during the mixing process of the rubber materials of the target semi-parts. Each rubber compound that has been mixed is processed according to a preset tire forming process to obtain a tire to be scanned; A cut is made at a designated location on the tire to be scanned, and the cut cross-section is scanned to generate a tire cross-section scan image.

2. The method as described in claim 1, characterized in that, During the rubber compounding process, each of the target semi-parts is dyed with a designated pigment, and each designated pigment corresponds to one or more of the target semi-parts.

3. The method as described in claim 1, characterized in that, The mass of the specified pigment is 1.3%-2.75% of the mass of the adhesive to be dyed.

4. The method as described in claim 1, characterized in that, The specified pigments include toluidine red, permanent yellow, or phthalocyanine blue.

5. The method as described in claim 1, characterized in that, After adding the specified pigment during the rubber compounding process of the target half-part, the rubber compound is compounded by mechanical blending.

6. The method as described in claim 1, characterized in that, The preset tire forming process includes a preset semi-finished product forming process, a preset tire forming process, and a preset vulcanization process. Each rubber compound that has undergone the rubber compounding process is processed according to the preset tire forming process to obtain the tire to be scanned. Specifically: According to the preset semi-finished product molding process, the rubber compound that has been mixed is molded to obtain each molded semi-part. According to the preset tire forming process, each of the forming half parts is subjected to secondary forming processing to obtain a formed tire blank; The pre-formed tire blank is vulcanized according to the preset vulcanization process to obtain the tire to be scanned.

7. The method as described in claim 6, characterized in that, The vulcanization parameters of the preset vulcanization process are determined based on the chemical properties of the specified pigment.

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