Rubber tire vulcanization molding process of electromagnetic heating gas medium

Abstract

The invention discloses a rubber tire vulcanization molding process of an electromagnetic heating gas medium, which comprises the following steps: electromagnetic heating, a heat transfer medium and cyclic utilization of the gas medium, especially carbon dioxide gas; comprising the steps that a rubber tire blank is placed in a mold cavity of a mold wrapped by a lower hot plate, an upper hot plate and a mold sleeve, and a curing bladder formed by the rubber tire extends into a rubber tire blank ring; carbon dioxide gas is heated through the gas medium heating assembly to form a high-temperature carbon dioxide gas medium, an outer temperature heating cycle is established on the outer side of the rubber tire blank, and an inner temperature heating cycle is established on the inner side of the rubber tire blank; cooling and shaping after the vulcanization molding process requirement is met; and vacuumizing the curing bladder, opening the mold, and taking out the tire. According to the method, water is not needed, fossil energy such as coal and natural gas does not need to be consumed, generation of waste gas in the vulcanization process is greatly reduced, carbon dioxide gas which is not flammable, explosive and corrosion-free and has a high specific hot melting value is adopted as a heat transfer medium, recycling is achieved, and real energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of rubber tire vulcanization molding, in particular to a rubber tire vulcanization molding process using electromagnetic heating gas medium. Background Art

[0002] At present, the vulcanization molding process of rubber tires at home and abroad is mainly: 1. The vulcanization molding process of preparing saturated water vapor and nitrogen setting (commonly known as steaming tire process), water vapor provides molding heat energy, nitrogen sets, and the preparation of water vapor is mainly to heat the water in the boiler by burning a large amount of fossil energy such as coal or natural gas to prepare water vapor, which is transmitted through pipelines to the mold sleeve and upper and lower hot plates and molding capsules of the molding mold on the vulcanization molding equipment to heat the rubber tire embryo and vulcanize the tire, which consumes a lot of water and burns a lot of fossil energy such as coal or natural gas, thereby emitting a lot of carbon dioxide, sulfur dioxide and other waste gases to pollute the air environment; 2. Heating with electromagnetic heating wire, upper, The lower hot plate and mold sleeve are commonly known as external temperature. The pipeline heater heats the nitrogen and transmits it to the rubber molding capsule for heating (commonly known as internal temperature). The electromagnetic heating wire directly heats the upper and lower hot plates and the mold sleeve itself, resulting in uneven heating. The temperature of the area close to the heating is high and the temperature of the area far away is low. At the same time, it is difficult to replace the heating wire in the upper and lower hot plates and mold sleeves; 3. Add fluid nitrogen to the electromagnetic heating wire to heat the upper and lower hot plates and mold sleeves to heat the upper and lower hot plates and mold sleeves. Since nitrogen is a stable gas, it is not easy to transfer heat and has a very low specific heat capacity. As a medium for the heating capsule, the heat energy per unit volume cannot meet the heat energy required for the vulcanization molding of the rubber tire and can only be used as a shaping medium.

[0003] At present, many electromagnetic heating rubber tire vulcanization molding processes are still in the experimental stage and cannot be commercially applied. The core problem is that the specific heat capacity of nitrogen is very low, and the single atomic structure does not absorb heat. The electromagnetic heating wire directly heats the upper and lower hot plates and the mold sleeve, and the temperature is uneven and difficult to replace; and the mature and widely used saturated steam plus nitrogen vulcanization molding process consumes a lot of water resources and burns fossil energy such as coal and natural gas, and also produces a lot of carbon dioxide, sulfur dioxide, and other waste gases that pollute the environment. It does not meet the current global requirements for environmental and energy ecological development. Therefore, a more advanced, more environmentally friendly, and more energy-saving rubber tire vulcanization molding process is needed to meet the needs of the development of new quality productivity. Summary of the invention

[0004] The present invention provides a rubber tire vulcanization molding process using electromagnetically heated gas medium, which is used to solve at least one problem raised in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A rubber tire vulcanization molding process using electromagnetic heating gas medium, wherein the electromagnetic heating, heat transfer medium and the recycled medium are gas medium, especially carbon dioxide gas;

[0007] The following steps are involved:

[0008] S1: placing a rubber tire embryo in a mold cavity of a mold wrapped by a lower hot plate, an upper hot plate and a mold sleeve, and a vulcanizing bladder for molding the rubber tire extends into the interior of the rubber tire embryo ring;

[0009] S2: Start vulcanization, heat the carbon dioxide gas through the gas medium heating component to form a high-temperature carbon dioxide gas medium, establish an external temperature heating cycle on the outside of the rubber tire embryo and an internal temperature heating cycle on the inside of the rubber tire embryo;

[0010] S3: Cooling and shaping after meeting the requirements of vulcanization molding process;

[0011] S4: After shaping is completed, the vulcanizing bladder is evacuated, the mold is opened, and the tire is taken out.

[0012] Preferably, in step S2, establishing an external temperature heating cycle includes:

[0013] The high-temperature gas medium circulation pump transports the carbon dioxide gas medium discharged after the vulcanization is completed in the recovery gas storage tank to the circulation gas storage tank, and is heated to the required vulcanization temperature by the first heating element of the gas medium, and then enters the lower hot plate heating chamber through the fifth stop valve and the lower hot plate gas inlet, enters the mold sleeve heating chamber through the seventh stop valve and the mold sleeve gas inlet, enters the upper hot plate heating chamber through the ninth stop valve and the upper hot plate gas inlet, and then is discharged to the recovery gas storage tank through the corresponding sixth stop valve and the lower hot plate gas outlet, the eighth stop valve and the mold sleeve gas outlet, the tenth stop valve and the upper hot plate gas outlet.

[0014] Preferably, in step S2, establishing an internal temperature heating cycle comprises:

[0015] The high-temperature gas medium circulation pump transports the carbon dioxide gas medium discharged after vulcanization in the recovery gas storage tank to the circulation gas storage tank, passes through the second heating element of the gas medium and the second stop valve to the inside of the vulcanization bladder for rubber tire molding, and then returns to the recovery gas storage tank through the fourth stop valve for continued circulation.

[0016] Preferably, in step S3, the cooling and shaping process includes:

[0017] The second stop valve, the fifth stop valve, the sixth stop valve, the seventh stop valve, the eighth stop valve, the ninth stop valve and the tenth stop valve are closed, and the carbon dioxide gas medium in the recovery gas storage tank passes through the first stop valve and the pipeline cooling system into the vulcanization bladder for vulcanization molding of the rubber tire, and is discharged to the recovery gas storage tank through the fourth stop valve for recycling.

[0018] Preferably, in step S4, including

[0019] After the rubber tire is shaped, vacuum is drawn through the third stop valve, and then the lower hot plate, upper hot plate and mold sleeve are removed, the mold is opened, and the vulcanized tire is taken out by a robot.

[0020] Preferably, in step S2, the gas medium heating component includes a heating cylinder body, a spiral flow channel is arranged inside the heating cylinder body, a heating coil containing a cooling water flow channel is arranged outside the heating cylinder body, a rear cover and a front cover are arranged at both ends of the heating cylinder body, the rear cover and the front cover are both provided with openings, and the openings on the rear cover and the front cover are connected to the spiral flow channel inside the heating cylinder body, and the carbon dioxide gas forms a carbon dioxide vortex in the spiral flow channel;

[0021] Heat insulation cotton is arranged between the rear cover, the outer side of the front cover, the heating cylinder body and the heating coil.

[0022] Preferably, in step S2, the establishment of the external temperature heating cycle and the internal temperature heating cycle are both performed by an intelligent vulcanization temperature control system, and the intelligent vulcanization temperature control system includes

[0023] Control module;

[0024] A temperature detection module, the temperature detection module includes a temperature sensor, the temperature sensor is provided in several groups, and is respectively located at the first heating element, the second heating element, the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet, and the temperature sensor detects the temperature value of the corresponding position in real time;

[0025] A scheduling module, the scheduling module is used to adjust the temperature of the first heating element and the second heating element and the opening of the second stop valve, the fourth stop valve, the fifth stop valve, the sixth stop valve, the seventh stop valve, the eighth stop valve, the ninth stop valve, and the tenth stop valve;

[0026] A flow detection module, the flow detection module includes a flow sensor, the flow sensor is provided in several groups, and is respectively located at the outlet of the recovery gas storage tank, the first heating element, the second heating element, the lower hot plate gas inlet, the mold sleeve gas inlet, and the upper hot plate gas inlet. The flow sensor detects the flow value of the corresponding position in real time;

[0027] A signal transmission module, wherein the signal transmission module is used to connect the temperature detection module, the flow detection module, the scheduling module and the control module;

[0028] During the vulcanization process, the first heating element and the second heating element maintain the set heating power, and the second stop valve, the fourth stop valve, the fifth stop valve, the sixth stop valve, the seventh stop valve, the eighth stop valve, the ninth stop valve, and the tenth stop valve maintain the set opening.

[0029] Preferably, when the temperature sensor detects that the temperatures at the inner temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are all lower than the lowest value in the set range, the control module controls the scheduling module to increase the power of the first heating element and the second heating element, and simultaneously increases the opening of the second stop valve, the fourth stop valve, the fifth stop valve, the sixth stop valve, the seventh stop valve, the eighth stop valve, the ninth stop valve, and the tenth stop valve until the temperature sensor detects that the temperatures at the inner temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are within the set temperature range;

[0030] If the difference between the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet is within the set range, the existing setting is maintained;

[0031] If the difference between the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet is not within the set range, the maximum detection temperature is set as the first temperature, the minimum detection temperature is set as the second temperature, and the average of the first temperature and the second temperature is taken as the reference temperature. When the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are greater than the reference temperature, the stop valve opening is correspondingly reduced. When the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are less than the reference temperature, the stop valve opening is correspondingly increased.

[0032] Preferably, when the temperature sensor detects that the temperatures at the inner temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are all higher than the maximum value of the set range, the control module controls the scheduling module to reduce the power of the first heating element and the second heating element, and simultaneously reduces the opening of the second stop valve, the fourth stop valve, the fifth stop valve, the sixth stop valve, the seventh stop valve, the eighth stop valve, the ninth stop valve, and the tenth stop valve until the temperature sensor detects that the temperatures at the inner temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are within the set temperature range;

[0033] If the difference between the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet is within the set range, the existing setting is maintained;

[0034] If the difference between the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet is not within the set range, the maximum detection temperature is set as the first temperature, the minimum detection temperature is set as the second temperature, and the average of the first temperature and the second temperature is taken as the reference temperature. When the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are greater than the reference temperature, the stop valve opening is correspondingly reduced. When the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are less than the reference temperature, the stop valve opening is correspondingly increased.

[0035] Preferably, when the temperature sensor detects that the temperatures at the internal temperature gas outlet, the lower hot plate gas outlet, the mold sleeve gas outlet, and the upper hot plate gas outlet are all within the set range, the existing settings are maintained.

[0036] Compared with the prior art, the present invention has at least the following beneficial effects:

[0037] The rubber tire molding process of the present application through electromagnetic heating of carbon dioxide gas does not require water, is not directly heated by electromagnetic heating wire, does not need to consume fossil energy such as coal and natural gas, can well protect the environment, greatly reduce the generation of waste gas during the vulcanization process, and uses non-flammable and non-explosive, non-corrosive, and high-thermal melting point carbon dioxide gas as a heat transfer medium, which can be repeatedly recycled and is truly energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is the main structure diagram of the present invention;

[0039] Figure 2 It is a schematic diagram of the structure of the gas medium heating component of the present invention;

[0040] Figure 3 It is a process flow chart of the present invention.

[0041] In the figure: 1, recovery gas storage tank; 2, high temperature gas medium circulation pump; 3, circulation gas storage tank; 4, first heating element; 5, second heating element; 6, first stop valve; 7, second stop valve; 8, third stop valve; 9, pipeline cooling system; 10, fourth stop valve; 11, fifth stop valve; 12, sixth stop valve; 13, seventh stop valve; 14, eighth stop valve; 15, ninth stop valve; 16, tenth stop valve; 17, internal temperature gas inlet; 1 8. Internal temperature gas outlet; 19. Lower hot plate gas inlet; 20. Lower hot plate gas outlet; 21. Mold sleeve gas inlet; 22. Mold sleeve gas outlet; 23. Upper hot plate gas inlet; 24. Upper hot plate gas outlet; 25. Lower hot plate; 26. Upper hot plate; 27. Mold; 28. Tire; 29. ​​Vulcanizing capsule; 30. Mold sleeve; 31. Heating tube body; 32. Heating coil; 33. Back cover; 34. Front cover; 35. Insulation cotton; 36. Carbon dioxide vortex. DETAILED DESCRIPTION

[0042] In the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish the protective components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] Example 1

[0044] See also Figure 1-3 , an embodiment provided by the present invention: a rubber tire vulcanization molding process using electromagnetic heating gas medium, the electromagnetic heating, heat transfer medium and the recycled medium is gas medium, especially carbon dioxide gas;

[0045] The following steps are involved:

[0046] S1: placing a rubber tire embryo in a mold cavity of a mold 27 wrapped by a lower hot plate 25, an upper hot plate 26 and a mold sleeve 30, and a vulcanization bladder 29 for molding the rubber tire extends into the interior of the rubber tire embryo ring;

[0047] S2: Start vulcanization, heat the carbon dioxide gas through the gas medium heating component to form a high-temperature carbon dioxide gas medium, establish an external temperature heating cycle on the outside of the rubber tire embryo and an internal temperature heating cycle on the inside of the rubber tire embryo;

[0048] S3: Cooling and shaping after meeting the requirements of vulcanization molding process;

[0049] S4: After the shaping is completed, the vulcanizing bladder 29 is evacuated, the mold is opened, and the tire 28 is taken out.

[0050] In step S2, establishing an external temperature heating cycle includes:

[0051] The high-temperature gas medium circulation pump 2 transports the carbon dioxide gas medium discharged after the vulcanization in the recovery gas storage tank 1 at 150℃-200℃ to the circulation gas storage tank 3, and heats it to the required vulcanization temperature through the gas medium first heating element 4, and then enters the lower hot plate heating chamber through the fifth stop valve 11 and the lower hot plate gas inlet 19, enters the mold sleeve heating chamber through the seventh stop valve 13 and the mold sleeve gas inlet 21, enters the upper hot plate heating chamber through the ninth stop valve 15 and the upper hot plate gas inlet 23, and then passes through the corresponding sixth stop valve 12 and the lower hot plate gas outlet 20, the eighth stop valve 14 and the mold sleeve gas outlet 22, the tenth stop valve 16 and the upper hot plate gas outlet 24 to be discharged to the recovery gas storage tank 1.

[0052] In step S2, establishing an internal temperature heating cycle includes:

[0053] The high-temperature gas medium circulation pump 2 transports the carbon dioxide gas medium discharged after vulcanization in the recovery gas storage tank 1 at 150℃-200℃ to the circulation gas storage tank 3, passes through the gas medium second heating element 5 and the second stop valve 7 to the inside of the vulcanization bladder 29 for rubber tire molding, and then returns to the recovery gas storage tank 1 through the fourth stop valve 10 for continued circulation.

[0054] In step S3, the cooling and shaping process includes:

[0055] The second stop valve 7, the fifth stop valve 11, the sixth stop valve 12, the seventh stop valve 13, the eighth stop valve 14, the ninth stop valve 15 and the tenth stop valve 16 are closed, and the carbon dioxide gas medium in the recovery gas storage tank 1 passes through the first stop valve 6 and the pipeline cooling system 9 into the vulcanization bladder 29 for vulcanization molding of the rubber tire, and is discharged to the recovery gas storage tank 1 through the fourth stop valve 10 for recycling.

[0056] In step S4, including

[0057] After the rubber tire is shaped, the third stop valve 8 is used to evacuate the tire, and then the lower hot plate 25, the upper hot plate 26 and the mold sleeve 30 are removed, the mold 27 is opened, and the vulcanized tire 28 is taken out by a robot.

[0058] Preferably, multiple sets of rubber wheel vulcanization molding process equipment for electromagnetically heating gas medium can be used to replace the single set of high-temperature gas medium circulation required device and carbon dioxide gas medium heating component, and the corresponding interfaces of the recovery gas storage tank 1, the circulation gas storage tank 3, etc. can be connected to the matching electromagnetic heating gas medium thermal cycle system. In this way, the thermal cycle is centralized and can be applied in a large number of industries, and each set can be controlled in real time according to the actual process requirements, which is more stable and reliable.

[0059] The working principle and beneficial effects of the above scheme:

[0060] The rubber tire molding process of the present application through electromagnetic heating of carbon dioxide gas does not require water, is not directly heated by electromagnetic heating wire, does not need to consume fossil energy such as coal and natural gas, can well protect the environment, greatly reduce the generation of waste gas during the vulcanization process, and uses non-flammable and non-explosive, non-corrosive, and high-thermal melting point carbon dioxide gas as a heat transfer medium, which can be repeatedly recycled and is truly energy-saving and environmentally friendly.

[0061] Example 2

[0062] See also Figure 2 On the basis of Example 1, in step S2, the gas medium heating component includes a heating cylinder body 31, a spiral flow channel is arranged inside the heating cylinder body 31, a heating coil 32 containing a cooling water flow channel is arranged outside the heating cylinder body 31, a rear cover 33 and a front cover 34 are respectively arranged at both ends of the heating cylinder body 31, and the rear cover 33 and the front cover 34 are both provided with openings, and the openings on the rear cover 33 and the front cover 34 are connected to the spiral flow channel inside the heating cylinder body 31, and the carbon dioxide gas forms a carbon dioxide vortex 36 in the spiral flow channel;

[0063] Heat insulation cotton 35 is arranged on the outer sides of the rear cover 33 and the front cover 34 and between the heating cylinder body 31 and the heating coil 32 .

[0064] The working principle and beneficial effects of the above scheme:

[0065] CO2 of a certain pressure and flow rate passes through the air inlet of the gas medium heating component and enters the internal flow channel of the heating cylinder body 31. The length and shape of the internal flow channel are set according to the required heating power per unit volume mass and the requirements. The heating cylinder body is required to be resistant to high temperature, not easy to oxidize, etc., and made of high-temperature alloy materials. The heating cylinder body 31 converts electrical energy into thermal energy under the action of the heating coil 32, and heats the carbon dioxide through the spiral flow channel in the heating cylinder body 31 to the air outlet. The thermal insulation cotton 35 can effectively prevent heat energy from being transferred to the outside and heat energy loss such as radiation.

[0066] Example 3

[0067] On the basis of Example 1-2, in step S2, the establishment of the external temperature heating cycle and the internal temperature heating cycle are both performed by the intelligent vulcanization temperature control system, and the intelligent vulcanization temperature control system includes

[0068] Control module;

[0069] A temperature detection module, the temperature detection module includes a temperature sensor, the temperature sensor is provided in several groups, and is respectively located at the first heating element 4, the second heating element 5, the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24. The temperature sensor detects the temperature value of the corresponding position in real time;

[0070] A scheduling module, the scheduling module is used to adjust the temperature of the first heating element 4 and the second heating element 5 and the opening of the second stop valve 7, the fourth stop valve 10, the fifth stop valve 11, the sixth stop valve 12, the seventh stop valve 13, the eighth stop valve 14, the ninth stop valve 15, and the tenth stop valve 16;

[0071] A flow detection module, the flow detection module includes a flow sensor, the flow sensor is provided in several groups, and is respectively located at the outlet of the recovery gas storage tank 1, the first heating element 4, the second heating element 5, the lower hot plate gas inlet 19, the mold sleeve gas inlet 21, and the upper hot plate gas inlet 23. The flow sensor detects the flow value of the corresponding position in real time;

[0072] A signal transmission module, wherein the signal transmission module is used to connect the temperature detection module, the flow detection module, the scheduling module and the control module;

[0073] During the vulcanization process, the first heating element 4 and the second heating element 5 maintain the set heating power, and the second stop valve 7, the fourth stop valve 10, the fifth stop valve 11, the sixth stop valve 12, the seventh stop valve 13, the eighth stop valve 14, the ninth stop valve 15 and the tenth stop valve 16 maintain the set opening.

[0074] When the temperature sensor detects that the temperatures at the inner temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 are all lower than the lowest value in the set range, the control module controls the scheduling module to increase the power of the first heating element 4 and the second heating element 5, and simultaneously increases the opening of the second stop valve 7, the fourth stop valve 10, the fifth stop valve 11, the sixth stop valve 12, the seventh stop valve 13, the eighth stop valve 14, the ninth stop valve 15, and the tenth stop valve 16, until the temperature sensor detects that the temperatures at the inner temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 are within the set temperature range;

[0075] If the difference between the temperatures at the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 is within the set range, the existing setting is maintained;

[0076] If the temperature difference between the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 is not within the set range, the maximum detection temperature is set to the first temperature, the minimum detection temperature is set to the second temperature, and the average of the first temperature and the second temperature is taken as the reference temperature. When the temperature at the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 is greater than the reference temperature, the stop valve opening is correspondingly reduced. When the temperature at the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 is less than the reference temperature, the stop valve opening is correspondingly increased.

[0077] When the temperature sensor detects that the temperatures at the inner temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 are all higher than the maximum value of the set range, the control module controls the scheduling module to reduce the power of the first heating element 4 and the second heating element 5, and simultaneously reduces the opening of the second stop valve 7, the fourth stop valve 10, the fifth stop valve 11, the sixth stop valve 12, the seventh stop valve 13, the eighth stop valve 14, the ninth stop valve 15, and the tenth stop valve 16, until the temperature sensor detects that the temperatures at the inner temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 are within the set temperature range;

[0078] If the difference between the temperatures at the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 is within the set range, the existing setting is maintained;

[0079] If the temperature difference between the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 is not within the set range, the maximum detection temperature is set to the first temperature, the minimum detection temperature is set to the second temperature, and the average of the first temperature and the second temperature is taken as the reference temperature. When the temperature at the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 is greater than the reference temperature, the stop valve opening is correspondingly reduced. When the temperature at the internal temperature gas outlet 18, the lower hot plate gas outlet 20, the mold sleeve gas outlet 22, and the upper hot plate gas outlet 24 is less than the reference temperature, the stop valve opening is correspondingly increased.

[0080] When the temperature sensors detect that the temperatures at the internal temperature gas outlet 18 , the lower hot plate gas outlet 20 , the mold sleeve gas outlet 22 , and the upper hot plate gas outlet 24 are all within the set range, the existing settings are maintained.

[0081] The working principle and beneficial effects of the above scheme:

[0082] The temperature of the rubber tire vulcanization process is controlled in real time through the control module to ensure that the temperature of the rubber tire vulcanization process is always in a suitable state, thereby ensuring the quality of the rubber tire vulcanization. Automatic control can also reduce manual operations, effectively improve the control frequency, and ensure control accuracy.

[0083] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A rubber tire vulcanization molding process using electromagnetically heated gas medium, characterized in that: The electromagnetic heating, heat transfer medium and its recycling use gas medium, especially carbon dioxide gas; The following steps are involved: S1: placing a rubber tire embryo in a mold cavity of a mold (27) wrapped by a lower hot plate (25), an upper hot plate (26) and a mold sleeve (30), and a vulcanizing bladder (29) for molding the rubber tire extends into the interior of the rubber tire embryo ring; S2: Start vulcanization, heat the carbon dioxide gas through the gas medium heating component to form a high-temperature carbon dioxide gas medium, establish an external temperature heating cycle on the outside of the rubber tire embryo and an internal temperature heating cycle on the inside of the rubber tire embryo; S3: Cooling and shaping after meeting the requirements of vulcanization molding process; S4: After the shaping is completed, the vulcanizing bladder (29) is evacuated, the mold is opened, and the tire (28) is taken out.

2. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 1, characterized in that: In step S2, establishing an external temperature heating cycle includes: The high-temperature gas medium circulation pump (2) transports the carbon dioxide gas medium discharged after the completion of the vulcanization in the recovery gas storage tank (1) to the circulation gas storage tank (3), and is heated to the required vulcanization temperature by the gas medium first heating element (4), and then enters the lower hot plate heating chamber through the fifth stop valve (11) and the lower hot plate gas inlet (19), enters the mold sleeve heating chamber through the seventh stop valve (13) and the mold sleeve gas inlet (21), enters the upper hot plate heating chamber through the ninth stop valve (15) and the upper hot plate gas inlet (23), and then passes through the corresponding sixth stop valve (12) and the lower hot plate gas outlet (20), the eighth stop valve (14) and the mold sleeve gas outlet (22), and the tenth stop valve (16) and the upper hot plate gas outlet (24) to be discharged to the recovery gas storage tank (1).

3. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 1, characterized in that: In step S2, establishing an internal temperature heating cycle includes: The high-temperature gas medium circulation pump (2) transports the carbon dioxide gas medium discharged after the vulcanization is completed and recovered in the recovery gas storage tank (1) to the circulation gas storage tank (3), and then passes through the gas medium second heating element (5) and the second stop valve (7) to the inside of the vulcanization bladder (29) for rubber tire molding, and then returns to the recovery gas storage tank (1) through the fourth stop valve (10) for continued circulation.

4. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 1, characterized in that: In step S3, the cooling and shaping process includes: The second stop valve (7), the fifth stop valve (11), the sixth stop valve (12), the seventh stop valve (13), the eighth stop valve (14), the ninth stop valve (15) and the tenth stop valve (16) are closed, and the carbon dioxide gas medium in the recovery gas storage tank (1) enters the interior of the vulcanization bladder (29) for vulcanization molding of the rubber tire through the first stop valve (6) and the pipeline cooling system (9), and is discharged to the recovery gas storage tank (1) through the fourth stop valve (10) for recycling.

5. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 1, characterized in that: In step S4, including After the rubber tire is shaped, vacuum is drawn through the third stop valve (8), and then the lower hot plate (25), the upper hot plate (26) and the mold sleeve (30) are removed, the mold (27) is opened, and the vulcanized tire (28) is taken out by a robot.

6. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 1, characterized in that: In step S2, the gas medium heating component comprises a heating cylinder body (31), a spiral flow channel is arranged inside the heating cylinder body (31), a heating coil (32) containing a cooling water flow channel is arranged outside the heating cylinder body (31), a rear cover (33) and a front cover (34) are arranged at both ends of the heating cylinder body (31), the rear cover (33) and the front cover (34) are both provided with openings, and the openings on the rear cover (33) and the front cover (34) are connected to the spiral flow channel inside the heating cylinder body (31), and the carbon dioxide gas forms a carbon dioxide vortex (36) in the spiral flow channel; Heat insulation cotton (35) is arranged between the outer sides of the rear cover (33) and the front cover (34) and between the heating cylinder body (31) and the heating coil (32).

7. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 1, characterized in that: In step S2, both the external temperature heating cycle and the internal temperature heating cycle are established by an intelligent vulcanization temperature control system, and the intelligent vulcanization temperature control system includes: Control module; A temperature detection module, the temperature detection module comprising temperature sensors, the temperature sensors being arranged in a plurality of groups and respectively located at the first heating element (4), the second heating element (5), the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24), the temperature sensors detecting the temperature values ​​of the corresponding positions in real time; a scheduling module, the scheduling module being used to adjust the temperature of the first heating element (4) and the second heating element (5) and the opening of the second stop valve (7), the fourth stop valve (10), the fifth stop valve (11), the sixth stop valve (12), the seventh stop valve (13), the eighth stop valve (14), the ninth stop valve (15) and the tenth stop valve (16); A flow detection module, the flow detection module comprising flow sensors, the flow sensors being arranged in a plurality of groups and respectively located at the outlet of the recovery gas storage tank (1), the first heating element (4), the second heating element (5), the lower hot plate gas inlet (19), the mold sleeve gas inlet (21), and the upper hot plate gas inlet (23), the flow sensors detecting flow values ​​at corresponding positions in real time; A signal transmission module, wherein the signal transmission module is used to connect the temperature detection module, the flow detection module, the scheduling module and the control module; During the vulcanization process, the first heating element (4) and the second heating element (5) maintain the set heating power, and the second stop valve (7), the fourth stop valve (10), the fifth stop valve (11), the sixth stop valve (12), the seventh stop valve (13), the eighth stop valve (14), the ninth stop valve (15), and the tenth stop valve (16) maintain the set opening.

8. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 7, characterized in that: When the temperature sensor detects that the temperatures at the inner temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are all lower than the lowest value in the set range, the control module controls the scheduling module to increase the power of the first heating element (4) and the second heating element (5), and simultaneously increases the openings of the second stop valve (7), the fourth stop valve (10), the fifth stop valve (11), the sixth stop valve (12), the seventh stop valve (13), the eighth stop valve (14), the ninth stop valve (15), and the tenth stop valve (16), until the temperature sensor detects that the temperatures at the inner temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are within the set temperature range; If the difference between the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) is within the set range, the existing setting is maintained; If the difference between the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) is not within the set range, the maximum detected temperature is set to the first temperature, the minimum detected temperature is set to the second temperature, and the average of the first temperature and the second temperature is taken as the reference temperature. When the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are greater than the reference temperature, the stop valve opening is correspondingly reduced. When the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are less than the reference temperature, the stop valve opening is correspondingly increased.

9. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 7, characterized in that: When the temperature sensor detects that the temperatures at the inner temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are all higher than the maximum value of the set range, the control module controls the scheduling module to reduce the power of the first heating element (4) and the second heating element (5), and simultaneously reduces the opening of the second stop valve (7), the fourth stop valve (10), the fifth stop valve (11), the sixth stop valve (12), the seventh stop valve (13), the eighth stop valve (14), the ninth stop valve (15), and the tenth stop valve (16), until the temperature sensor detects that the temperatures at the inner temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are within the set temperature range; If the difference between the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) is within the set range, the existing setting is maintained; If the difference between the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) is not within the set range, the maximum detected temperature is set to the first temperature, the minimum detected temperature is set to the second temperature, and the average of the first temperature and the second temperature is taken as the reference temperature. When the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are greater than the reference temperature, the stop valve opening is correspondingly reduced. When the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are less than the reference temperature, the stop valve opening is correspondingly increased.

10. The rubber tire vulcanization molding process using electromagnetic heating gas medium according to claim 7, characterized in that: When the temperature sensors detect that the temperatures at the internal temperature gas outlet (18), the lower hot plate gas outlet (20), the mold sleeve gas outlet (22), and the upper hot plate gas outlet (24) are all within the set range, the existing settings are maintained.

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