Tire manufacturing method

Abstract

The invention relates to a tire manufacturing method which comprises the following steps: S1, preheating a mold, and monitoring the temperature of an upper mold and a lower mold in real time until the temperature reaches and is stabilized in a set temperature range; s2, a tire blank is placed, and the tire blank is placed on the supporting face of the lower mold; s3, mold closing operation: starting a mold closing mechanism of the vulcanizing machine, enabling the upper mold to move downwards, and enabling the upper movable block to be gradually attached to the lower mold under the guide of the sliding rail to form a complete tire vulcanizing cavity; s4, vulcanization process; s5, cooling the mold; and S6, demolding operation. By optimizing the mold structure and the temperature regulation and control system, the efficient, energy-saving and high-quality tire vulcanization process is achieved, the tire manufacturing efficiency and quality are remarkably improved, the production cost is reduced, and high application value and market prospects are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of tire manufacturing, and particularly relates to a tire manufacturing method. Background Art

[0002] In tire manufacturing, vulcanization is a key link determining tire performance. Traditional vulcanization methods have many deficiencies: First, the temperature distribution of the mold is uneven, resulting in unstable tire vulcanization quality and affecting product consistency; second, the cooling efficiency is low, the cooling time is long, increasing the production cycle and reducing production efficiency; in addition, the traditional system has high energy consumption, lacks precise temperature monitoring and automatic control functions, and it is difficult to achieve high-precision temperature management. These problems restrict the quality and efficiency of tire production and increase production costs. Therefore, developing a tire manufacturing method that can precisely control temperature, quickly cool, and be energy-saving and efficient is of great significance for improving the quality and efficiency of tire production. Summary of the Invention

[0003] (I) Object of the Invention

[0004] In order to overcome the above deficiencies, the object of the present invention is to provide a tire manufacturing method to solve the above technical problems.

[0005] (II) Technical Solution

[0006] To achieve the above object, the technical solution provided by the present application is as follows:

[0007] A tire manufacturing method, comprising the following steps:

[0008] S1 Preheat the mold, and monitor the temperatures of the upper mold and the lower mold in real time until they reach and stabilize within the set temperature range;

[0009] S2 Place the tire blank. First, clean the mold to ensure that there are no impurities and residues in the tire vulcanization cavity, and place the tire blank on the support surface of the lower mold;

[0010] S3 Clamp the mold. Start the clamping mechanism of the vulcanizer, the upper mold moves downward, and the upper movable block gradually fits with the lower mold under the guidance of the sliding track to form a complete tire vulcanization cavity;

[0011] S4 Vulcanization process. Start the pressurizing device of the vulcanizer to apply pressure to the mold, and at the same time, the heating element and the temperature control unit continue to maintain the vulcanization temperature of the mold to ensure the temperature uniformity and stability during the vulcanization process;

[0012] S5 Cool the mold. Turn off the heating system and start the cooling function of the temperature control unit;

[0013] S6 Demold operation. When the temperature drops to the appropriate range, the upper mold moves upward, and the upper movable block slides outward to open the mold.

[0014] Preferably, the temperature control unit in S4 includes a temperature control sleeve sleeved outside the upper mold. The outside of the temperature control sleeve is cylindrical, the inside of the temperature control sleeve is conical, and one or more temperature control air chambers are provided on the temperature control sleeve. Adjacent air chambers are connected through communication holes.

[0015] Preferably, each temperature control air chamber is provided with an air inlet and an air outlet. The air inlet and the air outlet are symmetrically arranged with the diameter of the temperature control air chamber as the center line. The air inlet of the lower temperature control air chamber in adjacent temperature control air chambers is connected to the air outlet of the upper temperature control air chamber through a communication hole. The air inlet of the top temperature control air chamber is connected to an air inlet nozzle, and the air outlet of the bottom temperature control air chamber is connected to an air outlet nozzle.

[0016] Preferably, between adjacent temperature control air chambers, the volume ratio of the upper temperature control air chamber to the lower temperature control air chamber is 1.4 - 1.6, and the distance between the inner side of the temperature control air chamber and the upper mold gradually decreases from top to bottom.

[0017] Preferably, the medium in the temperature control air chamber is hot oil, hot water, cold water or steam.

[0018] Preferably, a sealing ring is provided on the contact surface between the upper mold and the lower mold.

[0019] Preferably, the lower mold is provided with a guide groove corresponding to the upper mold, and the upper movable block is provided with a guide block corresponding to the guide groove.

[0020] Preferably, the temperature monitoring in S1 includes a temperature measuring element. The temperature measuring element is arranged on the inner surface of the mold, around the heating element and / or around the temperature control air chamber. The temperature measuring element transmits temperature data to the control system, and the control system gives an alarm and makes automatic adjustment according to the set threshold.

[0021] Preferably, the temperature adjustment between the temperature measuring element and the control system specifically includes the following steps:

[0022] A1 After the control system receives the temperature data, it compares it with the preset temperature threshold. If the temperature exceeds the set range, the system will trigger an alarm mechanism;

[0023] A2 The control system executes a PID control algorithm according to the temperature deviation, calculates a control signal, and adjusts the power of the heating or cooling system;

[0024] The PID algorithm is a control algorithm based on three parameters: proportional, integral and differential. Its core formula is:

[0025]

[0026] Among them, u(t) is the output signal of the controller, e(t) is the error between the set value and the actual measured value, and Kp, Ki, and Kd are the proportional, integral, and differential control parameters respectively;

[0027] A3 performs adjustment, and the control system adjusts the power of the heating element or the flow rate of the medium according to the calculation result so that the mold temperature returns to the set range;

[0028] A4 feedback and optimization, after adjustment, the system continues to monitor the temperature change, and performs feedback adjustment according to the new temperature data to ensure that the temperature is stable near the set value.

[0029] Beneficial effects:

[0030] By optimizing the mold structure and temperature control system, the present invention realizes an efficient, energy-saving and high-quality tire vulcanization process, significantly improves the efficiency and quality of tire manufacturing, reduces production costs, and has high application value and market prospects. Description of the drawings

[0031] Figure 1 is a schematic diagram of the internal structure of the vulcanizer of the present invention;

[0032] Figure 2 is a gas flow diagram of the temperature control air chamber according to an embodiment of the present invention;

[0033] Figure 3 is a cross-sectional view according to an embodiment of the present invention;

[0034] Figure 4 is a cross-sectional view according to another embodiment of the present invention. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific implementation manners and with reference to the attached Figures 1-4 , drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concepts of the present invention.

[0036] A tire manufacturing method provided by the present invention includes the following steps:

[0037] S1 Preheat the mold, and monitor the temperatures of the upper mold 12 and the lower mold 2 in real time until they reach and stabilize within the set temperature range;

[0038] S2 Place the tire blank. First, clean the mold to ensure that there are no impurities and residues in the tire vulcanization cavity 7, and place the tire blank on the support surface of the lower mold 2;

[0039] S3: mold closing operation, start the mold closing mechanism of the vulcanizer, the upper mold 12 moves downward, and the upper active block 3 gradually fits with the lower mold 2 under the guidance of the sliding track to form a complete tire vulcanization cavity 7;

[0040] In the S4 vulcanization process, the pressure device of the vulcanizer is started to apply pressure to the mold. At the same time, the heating element and the temperature control unit continue to maintain the vulcanization temperature of the mold to ensure the temperature uniformity and stability of the vulcanization process;

[0041] S5 cools the mold, turns off the heating system, and starts the cooling function of the temperature control unit;

[0042] S6 demoulding operation: when the temperature drops to the appropriate range, the upper mold moves upward, the upper movable block slides outward, and the mold is opened.

[0043] The upper mold 12 and the lower mold 2 are tightly matched through the mold clamping mechanism. The lower mold 2 is fixedly arranged to support the bottom of the tire; the upper active block 3 is slidably arranged on the upper mold 12, and the internal shape of the upper active block 3 matches the outer surface contour of the tire, ensuring that the tire can form accurate patterns and appearances during the vulcanization process, thereby improving the appearance quality of the tire. When the mold is closed, it is tightly fitted with the lower mold 2 to form a complete tire vulcanization cavity 7. Heating elements are arranged on the inner sides of the upper mold 12 and the lower mold 2 to further adjust the temperature. A temperature control unit is arranged on the outer side of the upper mold.

[0044] The upper mold 12 is provided with a sliding track, which is used to guide the movement of the upper movable block 3. The upper movable block is connected to the driving unit, and the upper movable block is extended and retracted under the action of the driving unit and the sliding track to realize the opening and closing of the mold. This structural design makes the opening and closing of the mold faster, reduces the production cycle, and improves production efficiency.

[0045] Preferably, the temperature control unit in S4 comprises a temperature control sleeve sleeved on the outer side of the upper mold, such as Figure 1 and Figure 3 As shown, the outer side of the temperature control sleeve 11 is cylindrical or stepped cylindrical, and the inner side is conical, which can better adapt to the shape of the mold. The temperature control sleeve 11 is provided with one or more temperature control air chambers 8, and the adjacent air chambers are connected by connecting holes. Each of the temperature control air chambers 8 is provided with an air inlet 9 and an air outlet 13, and the air inlet 9 and the air outlet 13 are symmetrically arranged with the diameter of the temperature control air chamber as the center line. The symmetrically arranged air inlet and air outlet ensure the uniform flow of the medium and further improve the accuracy of temperature control.

[0046] In the adjacent temperature control chambers 8, the air inlet 9 of the lower temperature control chamber 8 is connected to the air outlet 13 of the upper temperature control chamber 8 through a communication hole. The air inlet of the top temperature control chamber 8 is connected to the air inlet nozzle 10, and the air outlet of the bottom temperature control chamber 8 is connected to the air outlet nozzle 6, forming a complete temperature control channel.

[0047] Between the adjacent temperature control chambers 8, the volume ratio of the upper temperature control chamber 8 to the lower temperature control chamber 8 is 1.4 - 1.6. From top to bottom, the distance between the inner side of the temperature control chamber 8 and the upper mold 12 gradually decreases.

[0048] The medium in the temperature control chamber 8 is hot oil, hot water, cold water or steam. By selecting different media, flexible adjustment can be made according to different vulcanization requirements, further improving the flexibility of temperature control. The setting of the temperature control adjustment chamber 8 can ensure more uniform temperature distribution in the mold during vulcanization, reduce the tire performance differences caused by uneven temperature, and at the same time, by optimizing the cooling efficiency, significantly shorten the cooling time and improve production efficiency.

[0049] Preferably, a sealing ring 5 is provided on the contact surface of the upper mold 12 and the lower mold 2, ensuring the sealing of the vulcanization cavity during mold closing, preventing gas leakage during vulcanization, and improving the vulcanization quality.

[0050] The lower mold 2 is provided with a guiding groove 4 corresponding to the upper mold 12, and the upper movable block 3 is provided with a guiding block 1 corresponding to the guiding groove 4. The cooperation of the guiding groove and the guiding block improves the mold closing accuracy and stability of the mold, and further improves the vulcanization quality.

[0051] Preferably, the temperature monitoring in S1 includes temperature measuring elements. The temperature measuring elements are arranged on the inner surface of the mold, around the heating element and / or around the temperature control chamber. The temperature measuring elements transmit temperature data to the control system, and the control system gives an alarm and makes automatic adjustment according to the set threshold.

[0052] Preferably, the temperature adjustment between the temperature measuring element and the control system specifically includes the following steps:

[0053] A1 After receiving the temperature data, the control system compares it with the preset temperature threshold. If the temperature exceeds the set range, the system will trigger an alarm mechanism;

[0054] A2 The control system executes the PID control algorithm according to the temperature deviation, calculates the control signal, and adjusts the power of the heating or cooling system;

[0055] The PID algorithm is a control algorithm based on three parameters: proportional, integral and differential. Its core formula is:

[0056]

[0057] Among them, u(t) is the output signal of the controller, e(t) is the error between the set value and the actual measured value, and Kp, Ki, and Kd are the proportional, integral, and derivative control parameters respectively;

[0058] A3 performs adjustment, and the control system adjusts the power of the heating element or the flow rate of the medium according to the calculation result to bring the mold temperature back to the set range;

[0059] A4 feedback and optimization, after adjustment, the system continues to monitor the temperature change and performs feedback regulation according to the new temperature data to ensure that the temperature is stable near the set value.

[0060] The tire manufacturing method of the present invention realizes remarkable comprehensive benefits by optimizing the mold structure and the temperature control system. Specifically:

[0061] Uniform temperature distribution: Through the design of the temperature control sleeve and multiple temperature control air chambers, it is ensured that the temperature distribution in the mold during vulcanization is more uniform, reducing the tire performance differences caused by uneven temperature and improving the tire quality.

[0062] Improved cooling efficiency: The optimized cooling system design, through the reasonable air chamber volume ratio and the selection of the cooling medium, significantly shortens the cooling time and improves the production efficiency.

[0063] Energy saving and consumption reduction: Through precise temperature monitoring and the PID control algorithm, high-precision temperature control is achieved, reducing energy waste and lowering the production cost.

[0064] Improved sealing and guiding accuracy: The design of the sealing ring and the guiding groove improves the sealing performance and the die closing accuracy of the mold, ensuring the stability of the vulcanization process and the product quality.

[0065] Automation and intelligence: The introduction of the temperature monitoring and automatic adjustment system realizes the automation and intelligence of the vulcanization process, reduces manual intervention, and improves the production efficiency and the stability of the product quality.

[0066] Strong adaptability: By selecting different cooling media, it can be flexibly adjusted according to different vulcanization requirements, further improving the flexibility of temperature control and adapting to various tire production requirements.

[0067] In summary, the present invention realizes an efficient, energy-saving and high-quality tire vulcanization process by optimizing the mold structure and the temperature control system, significantly improves the efficiency and quality of tire manufacturing, reduces the production cost, and has high application value and market prospects.

[0068] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements 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 the present invention.

Claims

1. A tire manufacturing method, characterized in that: The following steps are involved: S1 preheats the mold and monitors the temperature of the upper mold and the lower mold in real time until the temperature reaches and stabilizes within the set temperature range; S2: placing the tire embryo, first cleaning the mold to ensure that there are no impurities and residues in the tire vulcanization cavity, and placing the tire embryo on the supporting surface of the lower mold; S3 mold closing operation, start the mold closing mechanism of the vulcanizer, the upper mold moves downward, and the upper active block gradually fits with the lower mold under the guidance of the sliding track to form a complete tire vulcanization cavity; In the S4 vulcanization process, the pressure device of the vulcanizer is started to apply pressure to the mold. At the same time, the heating element and the temperature control unit continue to maintain the vulcanization temperature of the mold to ensure the temperature uniformity and stability of the vulcanization process; S5 cools the mold, turns off the heating system, and starts the cooling function of the temperature control unit; S6 demoulding operation: when the temperature drops to the appropriate range, the upper mold moves upward, the upper movable block slides outward, and the mold is opened.

2. A tire manufacturing method according to claim 1, characterized in that: The temperature control unit in S4 includes a temperature control sleeve mounted on the outer side of the upper mold, the outer side of the temperature control sleeve is cylindrical, the inner side of the temperature control sleeve is conical, and one or more temperature control air chambers are provided on the temperature control sleeve, and adjacent air chambers are connected by connecting holes.

3. A tire manufacturing method according to claim 2, characterized in that:

3. Each of the temperature control air chambers is provided with an air inlet and an air outlet, and the air inlet and the air outlet are symmetrically arranged with the diameter of the temperature control air chamber as the center line. The air inlet of the lower temperature control air chamber in adjacent temperature control air chambers is connected to the air outlet of the upper temperature control air chamber through a connecting hole, the air inlet of the top temperature control air chamber is connected to the air inlet nozzle, and the air outlet of the bottom temperature control air chamber is connected to the air outlet nozzle.

4. A tire manufacturing method according to claim 3, characterized in that: Between the adjacent temperature-regulating air chambers, the volume ratio of the temperature-regulating air chamber at the upper end to the temperature-regulating air chamber at the lower end is 1.4-1.6, and the distance between the inner side of the temperature-regulating air chamber and the upper mold gradually decreases from top to bottom.

5. A tire manufacturing method according to claim 4, characterized in that: The medium in the temperature control air chamber is hot oil, hot water, cold water or steam.

6. A tire manufacturing method according to claim 1, characterized in that: The contact surfaces of the upper mold and the lower mold are provided with sealing rings.

7. A tire manufacturing method according to claim 1, characterized in that: The lower mold is provided with a guide groove corresponding to the upper mold, and the upper movable block is provided with a guide block corresponding to the guide groove.

8. A tire manufacturing method according to claim 1, characterized in that: The temperature monitoring in S1 includes a temperature measuring element, which is arranged on the inner surface of the mold, around the heating element and / or around the temperature control chamber. The temperature measuring element transmits temperature data to the control system, and the control system alarms and automatically adjusts according to the set threshold.

9. A tire manufacturing method according to claim 8, characterized in that: The temperature measuring element and the control system perform temperature regulation specifically including the following steps: After receiving the temperature data, the A1 control system compares it with the preset temperature threshold. If the temperature exceeds the set range, the system will trigger the alarm mechanism; The A2 control system executes the PID control algorithm based on the temperature deviation, calculates the control signal, and adjusts the power of the heating or cooling system; The PID algorithm is a control algorithm based on three parameters: proportional, integral and differential. Its core formula is: Where u(t) is the output signal of the controller, e(t) is the error between the set value and the actual measured value, Kp, Ki and Kd are the control parameters of proportion, integration and differentiation respectively; A3 performs adjustment. The control system adjusts the power of the heating element or the flow rate of the medium according to the calculation results to return the mold temperature to the set range. A4 feedback and optimization, after adjustment, the system continues to monitor temperature changes and makes feedback adjustments based on the new temperature data to ensure that the temperature remains stable near the set value.

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