A control method of a dynamic vulcanization process, a vulcanization device, an electronic device and a medium

Abstract

The application relates to a dynamic vulcanization process control method, a vulcanization device, electronic equipment and a medium, and comprises the following steps: collecting temperature data of outer and inner temperatures of a tire in a vulcanization process in real time; calculating dynamic vulcanization time and residual vulcanization time corresponding to a collection period respectively according to the collected temperature data; and judging whether vulcanization is completed according to the residual vulcanization time. The application improves the yield rate and production efficiency of the tire by collecting the outer and inner temperatures of the tire in real time and comprehensively controlling the vulcanization process time through calculation of the outer and inner temperatures.

Description

Technical Field

[0001] This application relates to the field of tire manufacturing technology, specifically to a control method, vulcanization device, electronic equipment, and medium for a dynamic vulcanization process. Background Technology

[0002] Tire vulcanization is a process in which the rubber molecular chains undergo chemical changes and form couplings. Only fully vulcanized tires are usable. During the vulcanization process, temperature, time, and pressure are important factors affecting the quality of tire vulcanization.

[0003] However, in actual production, the vulcanization temperature is not constant but changes in real time. If the temperature is lower than the standard vulcanization temperature during the vulcanization process, but the standard process time is still followed, it will result in under-vulcanization; if the temperature is higher than the standard vulcanization temperature during the vulcanization process, but the standard process time is still followed, it will result in over-vulcanization.

[0004] Therefore, how to adjust the vulcanization process time according to real-time parameters during the vulcanization process, and achieve automated control and adjustment to improve tire yield and production efficiency, is a technical problem that needs to be solved. Summary of the Invention

[0005] To address the above problems, the purpose of this application is to provide a dynamic vulcanization process control method, vulcanization device, electronic equipment, and medium. Compared with the prior art, this application improves tire yield and production efficiency by real-time acquisition of tire external and internal temperatures and comprehensive regulation of vulcanization process time through calculation of both external and internal temperatures.

[0006] To achieve the objectives of this application, the following technical solution is adopted: In a first aspect, this application provides a method for controlling a dynamic vulcanization process, the method comprising the following steps: S1, real-time temperature data of the tire's external temperature during the vulcanization process; S2, real-time temperature data of the tire's internal temperature during the vulcanization process; S3, Substitute the temperature data collected in steps S1 and S2 into the dynamic vulcanization time calculation formula to calculate the dynamic vulcanization time corresponding to the collection cycle. Calculate the remaining vulcanization time based on the known standard vulcanization time and the dynamic vulcanization time corresponding to the collection cycle, respectively, according to the tire outer temperature and tire inner temperature. S4. Based on the remaining vulcanization time mentioned in step S3, if the remaining vulcanization time calculated based on the tire outer temperature and tire inner temperature is ≤0, then vulcanization and mold opening will end. If at least one remaining vulcanization time is >0, then the next collection cycle will begin, and the dynamic vulcanization time and remaining vulcanization time will be calculated cyclically until the remaining vulcanization time calculated based on the tire outer temperature and tire inner temperature is ≤0.

[0007] This application addresses the common practice in existing vulcanization process control schemes, which generally employ traditional static vulcanization with constant temperature, constant pressure, and time, easily leading to over-sulfurization or under-sulfurization problems. It provides a dynamic vulcanization process control method.

[0008] The control method provided in this application, based on the influence of different temperatures on the vulcanization reaction rate, shortens the vulcanization time when the vulcanization temperature is too high and extends the vulcanization time when the vulcanization temperature is too low. This application simultaneously collects real-time data on the tire's internal and external temperatures, using this data as input for calculating the dynamic vulcanization time. Considering the influence of both the internal and external temperature fields of the tire, the real-time temperatures from different collection cycles during the vulcanization process are converted into equivalent vulcanization times (dynamic vulcanization times) corresponding to the standard vulcanization temperature. This process is continuously accumulated until the known standard vulcanization time is reached, indicating that the vulcanization requirements have been met. In actual control, the known standard vulcanization time is subtracted from the dynamic vulcanization time obtained in each collection cycle until the remaining vulcanization time calculated based on the internal and external temperatures is ≤0, at which point vulcanization is considered complete.

[0009] In some embodiments, the method for collecting the temperature data of the tire's outer temperature includes: placing a temperature sensor inside the vulcanization mold to collect the tire's outer temperature during the vulcanization process.

[0010] In some embodiments, at least two temperature sensors are provided inside the vulcanizing mold.

[0011] In this application, by setting multiple temperature sensors inside the vulcanizing mold, the calculation deviation caused by uneven local temperature of the mold can be avoided. In the actual calculation process, the average value of multiple temperature sensors can be used as the input temperature data for calculation, or the temperature data obtained from any temperature sensor can be used as the input data for calculation.

[0012] In some embodiments, the method for collecting the temperature data of the tire's internal temperature includes: placing a temperature sensor at the cover plate of the vulcanizing bladder cylinder to collect the tire's internal temperature during the vulcanization process.

[0013] In some embodiments, the inner cylinder of the vulcanizing capsule is connected to an internal pressure pipeline, and a pressure sensor is installed in the internal pressure pipeline.

[0014] In some embodiments, at least two temperature sensors are provided at the cover plate of the vulcanizing capsule inner cylinder.

[0015] In this application, by setting multiple temperature sensors in the inner cylinder of the vulcanizing capsule, the calculation deviation caused by uneven local temperature in the inner cylinder of the vulcanizing capsule can be avoided. In the actual calculation process, the average value of multiple temperature sensors can be used as the input temperature data for calculation, or the temperature data obtained by any one temperature sensor can be used as the input data for calculation.

[0016] In some embodiments, the formula for calculating the dynamic vulcanization time includes: ; Where t1 represents the acquisition period, in seconds; t2 represents the dynamic vulcanization time, in seconds; T1 represents the collected temperature data, in K; T2 represents the known standard vulcanization temperature, in K; E represents the activation energy of the sulfidation reaction, with units of kJ / mol; R represents the gas constant, R = 8.3143 J / (mol·K).

[0017] In this application, based on the constraint relationship between vulcanization temperature and time, the higher the vulcanization temperature, the shorter the required vulcanization time; conversely, the lower the vulcanization temperature, the longer the required vulcanization time. This principle, combined with a mathematical model, describes the quantitative relationship between vulcanization temperature and time, i.e., the dynamic vulcanization time is calculated using the aforementioned formula.

[0018] In some implementations, the acquisition period is 1 to 6 seconds, for example, it can be 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds or 6 seconds, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0019] By further controlling the duration of the sampling cycle, this application can further optimize the accurate determination of the sulfurization effect, thereby further reducing the occurrence of over-sulfurization or under-sulfurization problems.

[0020] In some implementations, the method for calculating the remaining vulcanization time includes: remaining vulcanization time = known standard vulcanization time - dynamic vulcanization time corresponding to the collection cycle.

[0021] In this application, the remaining vulcanization time is obtained by subtracting the dynamic vulcanization time obtained in each collection cycle from the known standard vulcanization time. The remaining vulcanization time represents the time that the product still needs to be vulcanized. When the remaining vulcanization time is ≤0, it is determined that the vulcanization is complete and the mold can be opened to stop the vulcanization.

[0022] Secondly, this application provides a vulcanization apparatus for a dynamic vulcanization process, the vulcanization apparatus being used for the control method of the dynamic vulcanization process as described in the first aspect of this application; The vulcanization device includes a vulcanization mold, a vulcanization capsule inner cylinder, and a CPU control system; the vulcanization capsule inner cylinder is disposed inside the vulcanization mold; a first temperature sensor is disposed inside the vulcanization mold; a second temperature sensor is disposed on the cover plate of the vulcanization capsule inner cylinder; the first temperature sensor and the second temperature sensor are respectively connected to the signal input terminal of the CPU control system; the signal output terminal of the CPU control system is connected to the vulcanization mold.

[0023] In this application, the CPU control system calculates the dynamic vulcanization time corresponding to each acquisition cycle based on the temperature data obtained in each acquisition cycle. It then subtracts the dynamic vulcanization time from the known standard vulcanization time to put the time control into a countdown state. When the actual vulcanization temperature is insufficient, the calculated dynamic vulcanization time is shorter, so the actual vulcanization time needs to be extended accordingly. When the actual vulcanization temperature is too high, the calculated dynamic vulcanization time is longer, so the actual vulcanization time needs to be shortened accordingly. The CPU control system makes a judgment based on the calculated remaining vulcanization time. When the remaining vulcanization time is ≤0, it indicates that vulcanization is complete.

[0024] Thirdly, this application provides an electronic device, the electronic device comprising: a processor; And a memory storing executable code that, when executed, causes the processor to perform the control method for the dynamic vulcanization process as described in the first aspect of this application.

[0025] The electronic device provided in this application adopts the control method of the above-mentioned dynamic vulcanization process, which can realize the automatic adjustment of the vulcanization process, shorten unnecessary vulcanization cycles, and avoid over-vulcanization or under-vulcanization problems.

[0026] Fourthly, this application provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the control method for the dynamic vulcanization process described in the first aspect of this application.

[0027] The computer-readable storage medium provided in this application employs the aforementioned dynamic vulcanization process control method, which enables automated adjustment of the vulcanization process, shortens unnecessary vulcanization cycles, and avoids over- or under-vulcanization problems.

[0028] Compared with the prior art, this application has the following advantages: (1) The control method provided in this application can simultaneously consider the influence of tire external temperature and internal temperature on the degree of vulcanization, accurately assess the vulcanization progress, comprehensively regulate the vulcanization time, so that the product reaches the required degree of vulcanization, greatly solve the problems of under-vulcanization and over-vulcanization, and improve the product yield and production efficiency.

[0029] (2) This application can achieve the desired vulcanization effect while avoiding excessive vulcanization energy consumption, avoiding unnecessary vulcanization cycles, reducing operating costs, and increasing the equipment uptime and reducing equipment failure rate due to the improved product yield, thereby reducing equipment maintenance costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the judgment logic of the control method provided in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the internal structure of the vulcanizing apparatus provided in Embodiment 1 of this application; 1-Vulcanizing mold; 2-Vulcanizing capsule inner cylinder; 3-First temperature sensor; 4-Second temperature sensor. Detailed Implementation

[0031] The technical solution of this application will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of this application and should not be considered as specific limitations thereof. It should also be noted that, for ease of description, the accompanying drawings show only the parts relevant to this application, not the entire structure.

[0032] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0035] Existing vulcanization process control schemes generally adopt traditional static vulcanization with constant temperature, constant pressure, and time, which can easily lead to over-sulfurization or under-sulfurization problems.

[0036] To address the above problems, one specific embodiment of this application provides a method for controlling a dynamic vulcanization process, the method comprising the following steps: S1, real-time temperature data of the tire's external temperature during the vulcanization process; S2, real-time temperature data of the tire's internal temperature during the vulcanization process; S3, Substitute the temperature data collected in steps S1 and S2 into the dynamic vulcanization time calculation formula to calculate the dynamic vulcanization time corresponding to the collection cycle. Calculate the remaining vulcanization time based on the known standard vulcanization time and the dynamic vulcanization time corresponding to the collection cycle, respectively, according to the tire outer temperature and tire inner temperature. S4. Based on the remaining vulcanization time mentioned in step S3, if the remaining vulcanization time calculated based on the tire outer temperature and tire inner temperature is ≤0, then vulcanization and mold opening will end. If at least one remaining vulcanization time is >0, then the next collection cycle will begin, and the dynamic vulcanization time and remaining vulcanization time will be calculated cyclically until the remaining vulcanization time calculated based on the tire outer temperature and tire inner temperature is ≤0.

[0037] In some embodiments, the method for collecting the temperature data of the tire outer temperature includes: placing a temperature sensor inside the vulcanization mold to collect the tire outer temperature during the tire vulcanization process.

[0038] In some embodiments, at least two temperature sensors are provided inside the vulcanizing mold.

[0039] In some embodiments, the method for collecting the temperature data of the tire's internal temperature includes: placing a temperature sensor at the cover plate of the vulcanizing bladder cylinder to collect the tire's internal temperature during the vulcanization process.

[0040] In some embodiments, the inner cylinder of the vulcanizing capsule is connected to an internal pressure pipeline, and a pressure sensor is installed in the internal pressure pipeline.

[0041] In some embodiments, at least two temperature sensors are provided at the cover plate of the vulcanizing capsule inner cylinder.

[0042] In some embodiments, the formula for calculating the dynamic vulcanization time includes: ; Where t1 represents the acquisition period, in seconds; t2 represents the dynamic vulcanization time, in seconds; T1 represents the collected temperature data, in K; T2 represents the known standard vulcanization temperature, in K; E represents the activation energy of the sulfidation reaction, with units of kJ / mol; R represents the gas constant, R = 8.3143 J / (mol·K).

[0043] In some embodiments, the method for calculating the remaining vulcanization time includes: remaining vulcanization time = known standard vulcanization time - dynamic vulcanization time corresponding to the collection cycle.

[0044] In another specific embodiment, this application provides a vulcanization apparatus for a dynamic vulcanization process, the vulcanization apparatus being used for a control method of the dynamic vulcanization process as described in one specific embodiment; The vulcanization device includes a vulcanization mold, a vulcanization capsule inner cylinder, and a CPU control system. The vulcanizing capsule inner cylinder is disposed inside the vulcanizing mold; A first temperature sensor is installed inside the vulcanization mold; A second temperature sensor is installed at the cover plate of the inner cylinder of the vulcanizing capsule; The first temperature sensor and the second temperature sensor are respectively connected to the signal input terminal of the CPU control system; The signal output terminal of the CPU control system is connected to the vulcanizing mold.

[0045] In another specific embodiment, this application provides an electronic device, the electronic device comprising: a processor; And a memory storing executable code that, when executed, causes the processor to perform a control method for a dynamic vulcanization process as described in one specific embodiment.

[0046] In another specific embodiment, this application provides a computer-readable storage medium storing computer instructions for causing a processor to execute and implement a control method for a dynamic vulcanization process as described in one specific embodiment.

[0047] Example 1 This embodiment provides a method for controlling a dynamic vulcanization process, such as... Figure 1 As shown, the control method includes the following steps: S1, Real-time acquisition of tire external temperature data during vulcanization; The method for acquiring the tire external temperature data includes: placing two temperature sensors inside the vulcanization mold to acquire the tire external temperature during the vulcanization process; S2, Real-time acquisition of tire internal temperature data during vulcanization; The method for acquiring the tire internal temperature data includes: setting two temperature sensors at the cover plate of the vulcanizing bladder cylinder to acquire the tire internal temperature during the vulcanization process; S3, Substitute the temperature data collected in steps S1 and S2 into the calculation formula for dynamic vulcanization time, wherein the calculation formula for dynamic vulcanization time includes: ; Where t1 represents the acquisition period, in seconds. In this embodiment, the acquisition period is 6 seconds. t2 represents the dynamic vulcanization time, in seconds; T1 represents the collected temperature data, in K; T2 represents the known standard vulcanization temperature, in K; E represents the activation energy of the sulfidation reaction, with units of kJ / mol; R represents the gas constant, R = 8.3143 J / (mol·K); Based on the above formulas, the dynamic vulcanization time corresponding to the external temperature and the dynamic vulcanization time corresponding to the internal temperature of the acquisition cycle are calculated respectively. Then, based on the formula: Remaining vulcanization time = Known standard vulcanization time - Dynamic vulcanization time corresponding to the acquisition cycle, the remaining vulcanization time corresponding to the external temperature and the remaining vulcanization time corresponding to the internal temperature of the acquisition cycle are calculated. S4. Based on the remaining vulcanization time mentioned in step S3, if the remaining vulcanization time calculated based on the tire outer temperature and tire inner temperature is ≤0, then vulcanization and mold opening will end. If at least one remaining vulcanization time is >0, then the next collection cycle will begin, and the dynamic vulcanization time and remaining vulcanization time will be calculated cyclically until the remaining vulcanization time calculated based on the tire outer temperature and tire inner temperature is ≤0.

[0048] This embodiment also provides a vulcanization apparatus for a dynamic vulcanization process, the vulcanization apparatus as follows: Figure 2As shown, the vulcanization device includes a vulcanization mold 1, a vulcanization capsule inner cylinder 2, and a CPU control system (not shown in the figure); the vulcanization capsule inner cylinder 2 is disposed inside the vulcanization mold 1; a first temperature sensor 3 is disposed inside the vulcanization mold 1; a second temperature sensor 4 is disposed at the cover plate of the vulcanization capsule inner cylinder 2; the first temperature sensor 3 and the second temperature sensor 4 are respectively connected to the signal input terminal of the CPU control system; the signal output terminal of the CPU control system is connected to the vulcanization mold 1.

[0049] The control method provided in this application can effectively avoid over-sulfurization or under-sulfurization problems, and the product yield can reach over 99.7%.

[0050] Example 2 This embodiment provides a method for controlling a dynamic vulcanization process, which differs from Embodiment 1 only in that the acquisition cycle is 10s.

[0051] Compared to Example 1, in this embodiment, the longer acquisition cycle time makes it easy for the temperature sensor to fail to provide timely feedback on temperature changes during the acquisition cycle waiting process, thus affecting the precise control of dynamic vulcanization time. The yield rate of the product in Example 2 is slightly worse than that in Example 1, reaching only about 99.4%.

[0052] Comparative Example 1 This comparative example provides a method for controlling a dynamic vulcanization process. The only difference from Example 1 is that step S1 is omitted. In steps S3 to S4, the temperature data collected in step S2 is substituted into the dynamic vulcanization time calculation formula to calculate the dynamic vulcanization time corresponding to the collection cycle. The remaining vulcanization time is calculated based on the known standard vulcanization time and the dynamic vulcanization time corresponding to the collection cycle. Then, the remaining vulcanization time is judged based on the obtained remaining vulcanization time. If it is ≤0, the vulcanization and mold opening are ended. If it is >0, the next collection cycle is entered. The dynamic vulcanization time and remaining vulcanization time are calculated in a loop until they are ≤0.

[0053] Comparative Example 2 This comparative example provides a method for controlling a dynamic vulcanization process. The only difference from Example 1 is that step S2 is omitted. In steps S3 to S4, the temperature data obtained in step S1 is substituted into the dynamic vulcanization time calculation formula to calculate the dynamic vulcanization time corresponding to the acquisition cycle. The remaining vulcanization time is calculated based on the known standard vulcanization time and the dynamic vulcanization time corresponding to the acquisition cycle. Then, the remaining vulcanization time is judged based on the obtained remaining vulcanization time. If it is ≤0, the vulcanization and mold opening are ended. If it is >0, the next acquisition cycle is entered. The dynamic vulcanization time and remaining vulcanization time are calculated in a loop until they are ≤0.

[0054] Compared to Example 1, Comparative Examples 1 and 2 only considered the internal and external temperature fields, respectively, and failed to simultaneously collect the internal and external temperatures of the tires in real time and calculate the accurate dynamic vulcanization time. As a result, the yield of the products in Comparative Examples 1 and 2 was lower than that of Example 1, reaching only about 99% respectively.

[0055] In summary, this application improves tire yield and production efficiency by real-time collection of tire external and internal temperatures and comprehensive control of vulcanization process time through calculation of both external and internal temperatures.

[0056] The above description is only a specific embodiment of this application, but the protection scope of this application is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application fall within the protection and disclosure scope of this application.

Claims

1. A method for controlling a dynamic vulcanization process, characterized in that, The control method includes the following steps: S1, real-time temperature data of the tire's external temperature during the vulcanization process; S2, real-time temperature data of the tire's internal temperature during the vulcanization process; S3, Substitute the temperature data collected in steps S1 and S2 into the dynamic vulcanization time calculation formula to calculate the dynamic vulcanization time corresponding to the collection cycle. Calculate the remaining vulcanization time based on the known standard vulcanization time and the dynamic vulcanization time corresponding to the collection cycle, respectively, according to the tire outer temperature and tire inner temperature. S4. Based on the remaining vulcanization time mentioned in step S3, if the remaining vulcanization time calculated based on the tire outer temperature and tire inner temperature is ≤0, then vulcanization and mold opening will end. If at least one remaining vulcanization time is >0, then the next collection cycle will begin, and the dynamic vulcanization time and remaining vulcanization time will be calculated cyclically until the remaining vulcanization time calculated based on the tire outer temperature and tire inner temperature is ≤0.

2. The control method according to claim 1, characterized in that, The method for collecting the temperature data of the tire's outer temperature includes: placing a temperature sensor inside the vulcanization mold to collect the tire's outer temperature during the vulcanization process.

3. The control method according to claim 2, characterized in that, At least two temperature sensors are installed inside the vulcanizing mold.

4. The control method according to claim 1, characterized in that, The method for collecting the temperature data of the tire's internal temperature includes: placing a temperature sensor at the cover plate of the vulcanizing bladder cylinder to collect the tire's internal temperature during the vulcanization process; And / or, the inner cylinder of the vulcanizing capsule is connected to an internal pressure pipeline, and a pressure sensor is installed in the internal pressure pipeline.

5. The control method according to claim 4, characterized in that, At least two temperature sensors are installed on the cover plate of the inner cylinder of the vulcanizing capsule.

6. The control method according to claim 1, characterized in that, The formula for calculating the dynamic vulcanization time includes: ； Where t1 represents the acquisition period, in seconds; t2 represents the dynamic vulcanization time, in seconds; T1 represents the collected temperature data, in K; T2 represents the known standard vulcanization temperature, in K; E represents the activation energy of the sulfidation reaction, with units of kJ / mol; R represents the gas constant, R = 8.3143 J / (mol·K); And / or, the acquisition period is 1~6s.

7. The control method according to claim 1, characterized in that, The calculation method for the remaining vulcanization time includes: remaining vulcanization time = known standard vulcanization time - dynamic vulcanization time corresponding to the acquisition cycle.

8. A vulcanization apparatus for a dynamic vulcanization process, characterized in that, The vulcanizing device is used in the control method of the dynamic vulcanizing process as described in any one of claims 1 to 7; The vulcanization device includes a vulcanization mold, a vulcanization capsule inner cylinder, and a CPU control system. The vulcanizing capsule inner cylinder is disposed inside the vulcanizing mold; A first temperature sensor is installed inside the vulcanization mold; A second temperature sensor is installed at the cover plate of the inner cylinder of the vulcanizing capsule; The first temperature sensor and the second temperature sensor are respectively connected to the signal input terminal of the CPU control system; The signal output terminal of the CPU control system is connected to the vulcanizing mold.

9. An electronic device, characterized in that, The electronic device includes: a processor; And a memory storing executable code, which, when executed, causes the processor to perform the control method for the dynamic vulcanization process as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that are used to cause a processor to execute the control method of the dynamic vulcanization process according to any one of claims 1 to 7.

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