Method for controlling the weight of solid tire tire precursors and use thereof
By using segmented weighing and multi-stage calibration, the problem of low weight control accuracy in the production of solid tire blanks was solved, achieving high-precision weight control of ±0.1kg, reducing glue overflow consumption and production costs, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUIZHOU TIRE
- Filing Date
- 2026-04-10
- Publication Date
- 2026-06-02
AI Technical Summary
The current production of solid tire blanks suffers from low weight control precision, which easily leads to glue overflow waste and increased production costs, and also makes it impossible to achieve efficient production.
By employing segmented weighing and multi-stage correction, the weight errors of each molding stage are gradually offset through segmented weighing and correction of the base rubber, intermediate rubber, and tread rubber, achieving high-precision weight control of ±0.1kg.
It significantly improved the accuracy of tire weight control, reduced glue overflow, increased the first-pass yield of tires, reduced production costs, and enabled large-scale and efficient production.
Smart Images
Figure CN122125934A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of embryonic technology, and in particular to a method for controlling the weight of a solid embryonic fetus and its application. Background Technology
[0002] Currently, in the production process of solid tire blanks, weight control often adopts either a "single-stage weighing and calibration" or "non-segmented calibration throughout the entire process" approach. This means that a single overall weighing is performed only after the entire tire blank is formed. If a difference is found between the weight and the standard weight, the entire tire blank must be reworked. Alternatively, segmented weighing and calibration are not performed during the forming of the base rubber, intermediate rubber, and tread rubber. Instead, the amount of rubber used in each stage is controlled solely by the preset parameters of the production equipment. This lacks a targeted real-time error adjustment mechanism and does not utilize the production parameters of the previous tire for optimization. Instead, the amount of rubber used is calculated using a fixed preset density, which is prone to weight errors due to fluctuations in material density. This not only results in low weight control accuracy but also easily leads to rubber overflow and waste, increasing production costs.
[0003] In summary, existing methods for controlling the weight of solid embryos have the following problems: (1) Lack of segmented weighing correction, low weight control accuracy, and the error of rubber usage in each stage will gradually accumulate, resulting in a large error in the final tire carcass weight, making it difficult to meet the high-precision control requirements. (2) Due to excessive weight error, a large number of embryos need to be reworked and adjusted, or even scrapped. The first-pass yield of embryos is low, which increases production costs. (3) The rework process consumes a lot of manpower, material resources and time, slows down the overall production progress, cannot meet the needs of large-scale and efficient production, and has low production efficiency. (4) Without segmented calibration or only final weighing, it is impossible to identify the source of weight error in each stage, making it difficult to trace the error and to optimize the production process in a targeted manner. (5) Inaccurate control of the amount of rubber used may result in excessive rubber, excessive overflow and consumption, material waste, and increased production costs; (6) The actual density of the material was not calculated in conjunction with the actual production parameters of the previous tire blank, but only a fixed preset density was used. This is prone to weight error due to fluctuations in material density, and continuous optimization cannot be achieved.
[0004] In view of this, the present invention is hereby proposed. Summary of the Invention
[0005] One of the objectives of this invention is to provide a method for controlling the weight of a solid tire embryo. By using segmented weighing and multi-stage correction, the weight error of each molding stage is gradually offset, and the weight error of the embryo is ±0.1kg. The weight control accuracy is greatly improved and is far superior to the existing weight control accuracy.
[0006] The second objective of this invention is to provide an application of a method for controlling the weight of solid embryos, which is beneficial for improving production efficiency, reducing production costs, and achieving dynamic parameter optimization.
[0007] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted: In a first aspect, a method for controlling the weight of a solid embryo includes the following steps: (a) Weigh the base adhesive after molding and compare it with the standard weight of the base adhesive to obtain the weight difference value; (b) Correct the amount of intermediate rubber according to the weight difference value in step (a), weigh the tire carcass after the intermediate rubber is formed, and compare it with the standard weight of the intermediate rubber tire carcass to obtain the weight difference value. (c) Correct the amount of tread compound used in step (b) by weighing the tire blank after the tread compound is formed and comparing it with the standard weight of the tire blank to obtain the weight difference value. (d) Correct the amount of tread compound used in the second stage according to the weight difference value in step (c), and shape the tread compound into two stages to obtain the finished tire carcass.
[0008] Furthermore, in step (b), the method for correcting the amount of intermediate adhesive includes the following steps: If the weight difference value in step (a) shows that the weight is too high, then reduce the amount of intermediate adhesive used by the corresponding weight. If the weight difference value in step (a) shows that the weight is insufficient, then increase the amount of intermediate adhesive by the corresponding weight.
[0009] Furthermore, before step (c), there is a step of preliminary correction of the total amount of tread compound based on the weight difference value in step (b).
[0010] Furthermore, in step (c), the amount of tread compound used is 70%-80% of the total amount of tread compound used.
[0011] Furthermore, in step (c), a portion of the tread compound is used at 80% of the total tread compound usage.
[0012] Furthermore, in step (c), the method for correcting the amount of tread rubber in a section includes the following steps: If the weight difference value in step (b) shows that the tire is overweight, reduce the amount of tread compound for the corresponding weight. If the weight difference value in step (b) shows that the weight is insufficient, then increase the amount of tread rubber by the corresponding weight.
[0013] Furthermore, in step (d), the amount of the second-stage tread compound is 20%-30% of the total amount of tread compound.
[0014] Furthermore, in step (d), the amount of the second-stage tread compound is 20% of the total amount of tread compound.
[0015] Furthermore, in step (d), the method for correcting the amount of tread compound in the second stage includes the following steps: If the weight difference value in step (c) shows that the tire is overweight, reduce the amount of the second-stage tread compound for the corresponding weight. If the weight difference value in step (c) shows that the weight is insufficient, then increase the amount of the second-stage tread compound by the corresponding weight.
[0016] Secondly, the application of any of the above methods in the production of solid embryos.
[0017] Compared with the prior art, the present invention has at least the following beneficial effects: The solid tire blank weight control method provided by this invention gradually offsets the weight errors in each molding stage through segmented weighing and multi-stage correction, achieving a tire blank weight error of ±0.1kg. This significantly improves weight control accuracy, far exceeding existing methods. Simultaneously, the segmented weighing records clearly identify the sources of weight errors at each stage, facilitating targeted optimization of rubber usage control parameters and further enhancing production processes. Because errors are corrected promptly at each stage, the accumulation of weight errors is effectively avoided, significantly reducing tire blank rework and scrap, substantially increasing the first-pass yield, and lowering production costs. The reduced manpower, material resources, and time wasted on rework shortens the tire blank production cycle, thus contributing to large-scale, efficient production. This invention's method is highly versatile, adaptable to the production of different specifications and models of solid tire blanks, requiring no large-scale modification of production equipment, and is easy to promote and apply.
[0018] The application of the solid tire embryo weight control method provided by this invention is beneficial to improving production efficiency, reducing production costs, and achieving dynamic parameter optimization. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 A flowchart illustrating a method for controlling the weight of a solid embryo in an embodiment of the present invention; Figure 2 This is a comparison chart of weight errors in solid embryos. Detailed Implementation
[0021] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] According to a first aspect of the present invention, a method for controlling the weight of a solid embryo is provided, see... Figure 1 This includes the following steps: (a) Weigh the base adhesive after molding and compare it with the standard weight of the base adhesive to obtain the weight difference value; (b) Correct the amount of intermediate rubber according to the weight difference value in step (a), weigh the tire carcass after the intermediate rubber is formed, and compare it with the standard weight of the intermediate rubber tire carcass to obtain the weight difference value. (c) Correct the amount of tread compound used in step (b) by weighing the tire blank after the tread compound is formed and comparing it with the standard weight of the tire blank to obtain the weight difference value. (d) Correct the amount of tread compound used in the second stage according to the weight difference value in step (c), and shape the tread compound into two stages to obtain the finished tire carcass.
[0023] This invention, through segmented weighing and multi-stage correction, gradually eliminates weight errors at each molding stage, resulting in a preform weight error of ±0.1 kg. This significantly improves weight control precision. Figure 2 This invention achieves a weight control accuracy far superior to existing methods with a precision of ±1.0 kg. Furthermore, segmented weighing records clearly identify the sources of weight error at each stage, facilitating targeted optimization of rubber usage control parameters and further improving production processes. Because errors at each stage are corrected promptly, the accumulation of weight errors is effectively avoided, significantly reducing tire blank rework and scrap, substantially increasing the first-pass yield, and lowering production costs. The reduction in rework leads to lower manpower, material consumption, and time waste, shortening the tire blank production cycle and thus contributing to large-scale, efficient production. The method is highly versatile, adaptable to the production of solid tire blanks of different specifications and models, requiring no large-scale modification of production equipment, and is easy to promote and apply.
[0024] In step (b), the method for correcting the amount of intermediate adhesive includes the following steps: If the weight difference value in step (a) shows that the weight is too high, then reduce the amount of intermediate adhesive used by the corresponding weight. If the weight difference value in step (a) shows that the weight is insufficient, then increase the amount of intermediate adhesive by the corresponding weight.
[0025] This invention employs a segmented weighing correction mechanism, weighing the base adhesive and intermediate adhesive separately after molding, comparing them with the standard weight, calculating the weight difference value, and making targeted corrections, effectively avoiding error accumulation.
[0026] In a preferred embodiment, a preliminary correction step for the total amount of tread rubber based on the weight difference value in step (b) is included before step (c), which is more conducive to further improving the weight control accuracy.
[0027] In a preferred embodiment, in step (c), the amount of tread compound used can be 70%-80% of the total amount of tread compound used, and the typical but non-limiting amount is, for example, 70%, 72%, 74%, 76%, 78%, 80%, and is more preferably 80%.
[0028] In step (c), the method for correcting the amount of tread rubber in a section includes the following steps: If the weight difference value in step (b) shows that the tire is overweight, reduce the amount of tread compound for the corresponding weight. If the weight difference value in step (b) shows that the weight is insufficient, then increase the amount of tread rubber by the corresponding weight.
[0029] In a preferred embodiment, in step (d), the amount of the second-stage tread compound can be 20%-30% of the total amount of tread compound, with typical but non-limiting amounts such as 20%, 22%, 24%, 26%, 28%, 30%, and more preferably 20%.
[0030] This invention involves segmenting and precisely correcting the tread rubber. The tread rubber is divided into two segments with a ratio of 80% and 20%, respectively, to perform a first-stage winding and a second-stage winding. During the first-stage winding, the weight difference from the initial stage is corrected a second time, thus achieving precise compensation of errors.
[0031] In step (d), the method for correcting the amount of tread compound in the second stage includes the following steps: If the weight difference value in step (c) shows that the tire is overweight, reduce the amount of the second-stage tread compound for the corresponding weight. If the weight difference value in step (c) shows that the weight is insufficient, then increase the amount of the second-stage tread compound by the corresponding weight.
[0032] A typical method for controlling the weight of a solid embryo includes the following steps: (1) Weigh the base adhesive after molding to obtain the actual weight of the base adhesive; The actual weight of the obtained base adhesive is compared with the standard weight of the base adhesive to obtain the weight difference value; (2) Correct the amount of intermediate rubber according to the weight difference value in step (1), weigh the embryo obtained after the intermediate rubber is formed, and obtain the actual weight of the intermediate rubber embryo. The actual weight of the obtained intermediate rubber tire blank is compared with the standard weight of the intermediate rubber tire blank to obtain the weight difference value; (3) The total amount of tread rubber is initially corrected based on the weight difference value in step (2); (4) Correct the amount of tread rubber used in one section according to the weight difference value in step (2), weigh the tire blank obtained after the tread rubber section is formed, and obtain the actual weight of the tire blank of one section of tread rubber. The actual weight of the obtained tread rubber tire carcass is compared with the standard weight of the tread rubber tire carcass to obtain the weight difference value; (5) Correct the amount of tread rubber in the second stage according to the weight difference value in step (4), and shape the tread rubber in the second stage to ensure that the weight of the solid tire carcass meets the standard and obtain the finished tire carcass.
[0033] In this invention, high-precision electronic scales can be used for weighing at each stage, with a weighing accuracy of not less than 0.01 kg, which can ensure the accuracy of weight difference calculation; the standard weight can be preset according to the design requirements of different specifications of solid tire blanks, and can be finely adjusted according to production batches.
[0034] In summary, this invention gradually offsets the weight error of each stage by segmented weighing and multi-stage correction, thereby achieving the high-precision requirement of controlling the weight error of the tire blank within ±0.1kg and reducing glue overflow consumption.
[0035] It should be noted that weighing and calibration are performed after the base rubber, intermediate rubber, first-stage tread rubber, and second-stage tread rubber are formed. Although this can further improve the accuracy of weight control, it increases the number of weighings and production time, which not only reduces production efficiency but also exceeds the accuracy requirements of actual production needs. Therefore, the cost-effectiveness is lower than that of the control method of this invention.
[0036] This invention can add a parameter iteration optimization step, that is, after the previous tire is produced, the actual weighing data and rubber usage parameters of each stage are collected, and the actual density of the rubber is calculated in combination with the tire blank design volume. This is used as the core basis for calculating the standard weight of each stage when producing the next tire, thereby dynamically optimizing the production parameters, which is conducive to further improving the weight control accuracy and reducing rubber overflow consumption.
[0037] This invention can use automated weighing equipment and rubber material conveying equipment to automatically calculate weight differences and automatically correct the amount of rubber material used, thereby reducing manual operation, improving correction efficiency, and further reducing rubber spillage consumption.
[0038] The present invention can also add an automated density calculation module to automatically collect the parameters of the previous tire and calculate the actual density to guide the production of the next tire. However, the equipment investment cost is high and it is suitable for large-scale and highly automated production scenarios, which can be used as an optimization direction for the present invention.
[0039] According to a second aspect of the present invention, an application of the method described in any of the above-mentioned methods in the production process of solid tire embryos is provided, which is beneficial to improving production efficiency, reducing production costs, and achieving dynamic optimization of parameters.
[0040] The present invention will be further illustrated by the following examples. Unless otherwise specified, the materials in the examples are prepared according to existing methods or purchased directly from the market.
[0041] Example 1 A method for controlling the weight of a solid embryo, comprising the following steps: (1) Base adhesive molding: After the base adhesive is molded, the base adhesive is weighed immediately, the actual weight of the base adhesive is recorded, and it is compared with the preset standard weight of the base adhesive to calculate the weight difference between the actual weight and the standard weight (positive value is overweight, negative value is underweight). (2) Intermediate rubber molding: When entering the intermediate rubber production process, the amount of intermediate rubber is corrected according to the weight difference value calculated in step (1) (if it is too heavy, the amount of intermediate rubber of the corresponding weight is reduced; if it is too light, the amount of intermediate rubber of the corresponding weight is increased). After the intermediate rubber is wound, the current tire carcass (base rubber + intermediate rubber) is weighed and its actual total weight is recorded. It is then compared with the preset standard total weight (base rubber + intermediate rubber) to calculate the weight difference (positive value indicates overweight, negative value indicates underweight). (3) Tread compound molding: When entering the tread compound production process, the total amount of tread compound is initially corrected according to the weight difference value calculated in step (2) (if it is too heavy, the total amount of tread compound of the corresponding weight is reduced; if it is too light, the total amount of tread compound of the corresponding weight is increased). (4) Tread compound forming in one section: The weight of one section of tread compound accounts for 80% of the total weight of tread compound. When one section of tread compound is wound, the amount of one section of tread compound is adjusted twice according to the weight difference value calculated in step (2). If it is too heavy, the amount of one section of tread compound is reduced by the corresponding weight; if it is too light, the amount of one section of tread compound is increased by the corresponding weight. After one section of tread rubber is wound, the current tire blank (base rubber + intermediate rubber + one section of tread rubber) is weighed, the actual total weight is recorded, and compared with the preset standard total weight (base rubber + intermediate rubber + one section of tread rubber) to calculate the weight difference value at this time (positive value is overweight, negative value is underweight). (5) Two-stage tread rubber molding: The weight of the two-stage tread rubber accounts for 20% of the total weight of the tread rubber. When the two-stage tread rubber is wound, the amount of the two-stage tread rubber is corrected according to the weight difference value calculated in step (4). If the weight is too heavy, the amount of the two-stage tread rubber is reduced by the corresponding weight. If the weight is too light, the amount of the two-stage tread rubber is increased by the corresponding weight. This further offsets the weight error. After the two-stage tread rubber is wound, the final tire carcass weight meets the standard and the finished tire carcass is obtained.
[0042] Example 2 The difference between this embodiment and embodiment 1 is that in step (3), the total amount of tread rubber was not initially corrected; Everything else is the same as in Example 1.
[0043] Compared with Example 1, the disadvantage of this example is that it will result in the tire blank weight not meeting the standard (overweight or underweight), resulting in a large number (50%) of waste solid tires (waste tires with insufficient rubber or waste tires extruded from steel wire).
[0044] Example 3 The difference between this embodiment and Embodiment 1 is that, in step (4), the weight of the first tread compound accounts for 70% of the total weight of the tread compound; and in step (5), the weight of the second tread compound accounts for 30% of the total weight of the tread compound. Everything else is the same as in Example 1.
[0045] Compared with Example 1, the shortcoming of this example is that, due to the uncontrolled weight of the second tread compound (30% of the tread compound), the first-pass yield of the finished tire carcass can only reach about 85%.
[0046] Comparative Example 1 The only difference between this comparative example and Example 1 is that, in step (2), the amount of intermediate adhesive was not corrected. Everything else is the same as in Example 1.
[0047] Compared with Example 1, the drawback of this comparative example is that it leads to a decrease of about 5% in the first-pass yield of the tire blank, and at the same time, it leads to an uncontrolled ratio of the three rubbers, affecting the overall tire performance and cost.
[0048] Comparative Example 2 The only difference between this comparative example and Example 1 is that, in step (4), the amount of tread rubber used was not corrected a second time. Everything else is the same as in Example 1.
[0049] Compared with Example 1, the drawback of this comparative example is that it reduces the first-pass yield of the finished embryo by about 20%.
[0050] Comparative Example 3 The only difference between this comparative example and Example 1 is that, in step (5), the amount of the second-stage tread compound was not corrected. Everything else is the same as in Example 1.
[0051] Compared to Example 1, the drawback of this comparative example is that it results in approximately 10% scrap tires.
[0052] In summary, this invention weighs and specifically corrects each stage of the tire carcass after molding, from the base rubber to the intermediate rubber, then to the first stage tread rubber and the second stage tread rubber, gradually offsetting the weight error at each stage. This achieves the high-precision requirement of controlling the tire carcass weight error within ±0.1kg and reduces rubber overflow consumption.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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 or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for controlling the weight of a solid embryo, characterized in that, Includes the following steps: (a) Weigh the base adhesive after molding and compare it with the standard weight of the base adhesive to obtain the weight difference value; (b) Correct the amount of intermediate rubber according to the weight difference value in step (a), weigh the tire carcass after the intermediate rubber is formed, and compare it with the standard weight of the intermediate rubber tire carcass to obtain the weight difference value. (c) Correct the amount of tread compound used in step (b) by weighing the tire blank after the tread compound is formed and comparing it with the standard weight of the tire blank to obtain the weight difference value. (d) Correct the amount of tread compound used in the second stage according to the weight difference value in step (c), and shape the tread compound into two stages to obtain the finished tire carcass.
2. The method according to claim 1, characterized in that, In step (b), the method for correcting the amount of intermediate adhesive includes the following steps: If the weight difference value in step (a) shows that the weight is too high, then reduce the amount of intermediate adhesive used by the corresponding weight. If the weight difference value in step (a) shows that the weight is insufficient, then increase the amount of intermediate adhesive by the corresponding weight.
3. The method according to claim 1, characterized in that, The step (c) includes a preliminary correction of the total amount of tread compound based on the weight difference value in step (b).
4. The method according to claim 3, characterized in that, In step (c), the amount of tread compound used is 70%-80% of the total amount of tread compound used.
5. The method according to claim 4, characterized in that, In step (c), the amount of tread compound used is 80% of the total amount of tread compound used.
6. The method according to claim 5, characterized in that, In step (c), the method for correcting the amount of tread rubber in a section includes the following steps: If the weight difference value in step (b) shows that the tire is overweight, reduce the amount of tread compound for the corresponding weight. If the weight difference value in step (b) shows that the weight is insufficient, then increase the amount of tread rubber by the corresponding weight.
7. The method according to claim 3, characterized in that, In step (d), the amount of tread compound used in the second stage is 20%-30% of the total amount of tread compound used.
8. The method according to claim 7, characterized in that, In step (d), the amount of the second-stage tread compound is 20% of the total amount of tread compound.
9. The method according to claim 8, characterized in that, In step (d), the method for correcting the amount of tread compound in the second stage includes the following steps: If the weight difference value in step (c) shows that the tire is overweight, reduce the amount of the second-stage tread compound for the corresponding weight. If the weight difference value in step (c) shows that the weight is insufficient, then increase the amount of the second-stage tread compound by the corresponding weight.
10. The application of the method according to any one of claims 1-9 in the production of solid embryos.