A new energy tire vulcanization method

Abstract

The application provides a new energy tire vulcanization method, which comprises the following steps: first, the vulcanization medium in a low-pressure tank or a high-pressure tank is introduced into a capsule through a capsule shaping inflation channel, so that the pressure in the capsule reaches a first predetermined value; then, the vulcanization medium in the high-pressure tank is introduced into the capsule through a first high-pressure inflation channel, so that the pressure in the capsule is increased to a second predetermined value; the vulcanization medium in the high-pressure tank is introduced into the capsule through a second high-pressure inflation channel, so that the pressure in the capsule is continuously increased to a third predetermined value, and the like. The new energy tire vulcanization method disclosed by the application mainly realizes the purpose of reducing the cost by reducing the use amount of the pump through three times of incremental pressurization of the capsule and using the pressure pump for pressurization only in the third pressurization; in addition, compared with the prior art, the pressure in the high-pressure tank can be greatly reduced, so that the safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a new energy tire vulcanization method, in particular to a new energy tire vulcanization method which can balance the cost and safety of the electric heating vulcanization machine through repeated verification of the applicant. BACKGROUND

[0002] The applicant applied for an invention patent on January 12, 2021, with the application number 2021200742863 and the name of new energy tire vulcanization machine. As shown in the attached Figure 1 The recycling of the vulcanization medium (such as pure nitrogen) for vulcanization of the new energy tire vulcanization machine is as follows: the nitrogen recovered to the vacuum tank 50 needs to be pressurized by the vacuum pump 80 and then delivered to the low-pressure tank 30, and then the pure nitrogen in the low-pressure tank 30 is pressurized by the compression pump 83 and delivered to the high-pressure tank 40, and then the recovered pure nitrogen is introduced into the vulcanization passage 20 through the high-pressure tank 40. This design requires two pressurizations by the vacuum pump 80 and the compression pump 83, and the pressure required for directly introducing pure nitrogen into the vulcanization passage 20 through the high-pressure tank 40 is large. The cost of the vacuum pump 80 and the compression pump 83 is high, and the large pressure has safety risks. It can be seen that the prior art has the problems of high cost and safety. SUMMARY

[0003] To solve the above technical problems, the present application provides a new energy tire vulcanization method, which comprises the following steps: first, the vulcanization medium in the low-pressure tank or the high-pressure tank is introduced into the capsule through the capsule shaping inflation passage, so that the pressure in the capsule reaches a first predetermined value; then, the vulcanization medium in the high-pressure tank is introduced into the capsule through the first high-pressure inflation passage, so that the pressure in the capsule increases to a second predetermined value; the vulcanization medium in the high-pressure tank is introduced into the capsule through the second high-pressure inflation passage, so that the pressure in the capsule continues to increase to a third predetermined value; after the tire vulcanization process is completed; first, the vulcanization medium in the capsule is partially discharged to the high-pressure tank through the first high-pressure inflation passage, so that the pressure in the capsule decreases to a fourth pressure value; then, the vulcanization medium in the capsule is partially discharged to the low-pressure tank through the capsule shaping inflation passage, so that the pressure in the capsule continues to decrease to a fifth pressure value; finally, the pressure in the capsule is extracted to negative pressure by the pressure pump, so as to empty the vulcanization medium in the capsule, and the vulcanized tire is unloaded.

[0004] Preferably, the second predetermined value is 10 times or more than the first predetermined value.

[0005] Preferably, the third predetermined value is 1.25 to 1.5 times the second predetermined value.

[0006] Preferably, the pressure in the capsule decreases to a fourth pressure value of 1.5 Mpa to 2 Mpa.

[0007] Preferably, the pressure inside the capsule continues to decrease to a fifth pressure value of 1 Mpa to 1.5 Mpa.

[0008] Preferably, the vulcanizing medium inside the capsule is introduced into the low-pressure tank or the high-pressure tank by a pressure pump.

[0009] Preferably, a pressure stabilizing tank is further included for fine-tuning the first predetermined value inside the capsule.

[0010] In summary, the new energy tire vulcanization method disclosed in the present application mainly increases the pressure of the capsule three times, and only uses a pressure pump for pressure increase in the third time of pressure increase, thereby reducing the use amount of the pump to achieve the purpose of reducing the cost. In addition, compared with the prior art, the pressure inside the high-pressure tank can be greatly reduced to improve the safety. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0012] Figure 1 It is a schematic diagram of the new energy tire vulcanization machine of the prior art.

[0013] Figure 2 It is a schematic diagram of the electric heating type tire vulcanization machine of the present application.

[0014] Figure 3 It is a schematic diagram of the capsule shaping and inflating passage of the present application.

[0015] Figure 4 It is a schematic diagram of another capsule shaping and inflating passage or first high-pressure inflating passage of the present application.

[0016] Figure 5 It is a schematic diagram of the second high-pressure inflating passage of the present application.

[0017] Figure 6 It is a schematic diagram of the pressure stabilizing passage of the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. The following described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0019] The technical content of the present application is specifically described as follows, see the accompanying Figures 2 to 6 The present application discloses an electric heating type tire vulcanizing machine 1, which comprises a mold 10, which can detachably accommodate a green tire (not shown); a pressure stabilizing tank 50, a low-pressure tank 30, a high-pressure tank 40, all of which can be used for temporarily storing tire vulcanizing medium; a medium vulcanizing passage 20, which is provided with an inner mold heating tank 60; a first heating component 61, which is arranged on the inner mold heating tank 60 and is used for heating and warming the vulcanizing medium; a medium circulating device 63, which is used for providing power for the circulating flow of the vulcanizing medium, and can be a gas pump or an electric blower; a capsule shaping and inflating passage 21, a first high-pressure inflating passage 22, a second high-pressure inflating passage 23, and a pressure stabilizing passage 24, wherein a pressure pump 231 is arranged on the second high-pressure inflating passage 23. In addition, a first proportional valve 70 is arranged on the medium vulcanizing passage 20 inlet pipeline, which is used for controlling the opening or closing of the vulcanizing medium supply passage in the capsule shaping and inflating passage 21, the first high-pressure inflating passage 22, and the second high-pressure inflating passage 23, or accurately controlling the supply amount in proportion; preferably, a second heating component 41 can also be arranged on the high-pressure tank 40, which is used for preheating and warming the vulcanizing medium.

[0020] It should be noted that, Figure 2 The capsule 11 shown in the figure is accommodated in the mold 10 inside the green tire (not shown) and has elasticity, which can be composed of an elastic material (such as butyl rubber). The present application first supplies low-pressure vulcanizing medium in the inner space 2 of the capsule 11 to expand and stretch the capsule 11, so that the capsule is closely attached to the inner wall surface of the green tire, and the outer surface of the green tire is pressed against the inner surface of the mold 10 by the expansion force of the capsule, and then the heating and vulcanizing function is realized by providing high-temperature and high-pressure vulcanizing medium, so that the green tire is vulcanized and formed. In addition, the technical solution of the present application can also be applied to a tire vulcanizing machine without using a capsule. The vulcanizing medium in the present application can be inert gas or air, and nitrogen is only taken as an example for description in the present application.

[0021] The capsule shaping and inflating passage 21 in the present application comprises a low-pressure tank 30 and a first valve assembly, which comprises a first electromagnetic valve 211, a second electromagnetic valve 212, a third electromagnetic valve 213, and a first proportional valve 70. The first electromagnetic valve 211 is arranged in communication with the low-pressure tank 30, the first proportional valve 70 is arranged in communication with the medium vulcanizing passage 20, and the second electromagnetic valve 212 and the third electromagnetic valve 213 are arranged between the first electromagnetic valve 211 and the first proportional valve 70. Through the above arrangement, the vulcanizing medium in the low-pressure tank 30 can be introduced into the capsule 11 and the pressure can reach a first predetermined value, so as to realize capsule shaping and inflating.

[0022] In addition, the capsule shaping and inflating passage 21 can also include a high-pressure tank 40 and a second valve assembly, the second valve assembly including a fourth solenoid valve 233, a third solenoid valve 213 and a first proportional valve 70, the fourth solenoid valve 233 being in communication with the high-pressure tank 40, the first proportional valve 70 being in communication with the medium vulcanizing passage 20, and the third solenoid valve 213 being arranged between the fourth solenoid valve 233 and the first proportional valve 70. Through the above arrangement, the amount of vulcanizing medium in the high-pressure tank 40 can be controlled by the first proportional valve 70, so that the pressure in the capsule 11 reaches a first predetermined value, thereby achieving the capsule shaping and inflating.

[0023] The first high-pressure inflating passage 22 in the present application also includes a high-pressure tank 40 and a second valve assembly, the second valve assembly including a fourth solenoid valve 233, a third solenoid valve 213 and a first proportional valve 70, the fourth solenoid valve 233 being in communication with the high-pressure tank 40, the first proportional valve 70 being in communication with the medium vulcanizing passage 20, and the third solenoid valve 213 being arranged between the fourth solenoid valve 233 and the first proportional valve 70. Through the above arrangement, the amount of vulcanizing medium in the high-pressure tank 40 can be controlled by the first proportional valve 70, so that the pressure in the capsule 11 reaches a second predetermined value, which is 10 times or more than the first predetermined value.

[0024] The second high-pressure inflating passage 23 in the present application includes a high-pressure tank 40, a pressure pump 231 and a third valve assembly, the third valve assembly including a fourth solenoid valve 233, a second solenoid valve 212, a fifth solenoid valve 232 and a first proportional valve 70, the fourth solenoid valve 233 being in communication with the high-pressure tank 40, the first proportional valve 70 being in communication with the medium vulcanizing passage 20, and the fourth solenoid valve 233, the second solenoid valve 212, the fifth solenoid valve 232, the pressure pump 231 and the first proportional valve 70 being sequentially arranged in communication. Through the above arrangement, the vulcanizing medium in the high-pressure tank 40 can be pressurized by the pressure pump 231 and then introduced into the medium vulcanizing passage 20, so that the pressure in the capsule 11 reaches a third predetermined value, i.e. the pressure value required during vulcanization, which is 1.25 times or more than the second predetermined value.

[0025] The pressure stabilizing passage 24 in the present application includes a pressure stabilizing tank 50 and a fourth valve assembly, the fourth valve assembly including a sixth solenoid valve 51 and a second proportional valve 80. Preferably, the sixth solenoid valve 51 is in communication with the pressure stabilizing tank 50, and the second proportional valve 80 is in communication with the medium vulcanizing passage 20. Through the above arrangement, when the pressure in the internal space 2 of the capsule exceeds the third predetermined value, part of the vulcanizing medium can be introduced into the pressure stabilizing tank 50 through the sixth solenoid valve 51 and the second proportional valve 80, thereby achieving the function of adjusting the pressure value in the internal space 2 of the capsule.

[0026] The working principle of the above-mentioned electric heating type tire vulcanizing machine 1 is briefly described as follows: first, the vulcanizing medium is introduced into the inner space 2 of the capsule 11 through the capsule shaping inflation passage 21, so that the pressure in the capsule reaches a first predetermined value of expansion and stretching, and thereby the capsule is tightly attached to the inner wall surface of the green tire, and the outer surface of the green tire is pressed against the inner surface of the mold 10 by the expansion force of the capsule; then the pressure in the capsule is raised to a second predetermined value through the first high-pressure inflation passage 22, and the pressure in the capsule is continuously raised through the second high-pressure inflation passage, so that the pressure in the capsule reaches a third predetermined value, i.e. the pressure value required during vulcanization; when the pressure in the capsule reaches the second predetermined value and the third predetermined value, the vulcanizing medium can be heated by the first heating component 61 and / or the second heating component 41, and finally the high-temperature and high-pressure vulcanizing medium is introduced into the medium vulcanization passage 20 for cyclic vulcanization operation; after the vulcanization of the green tire is completed, most of the high-temperature and high-pressure vulcanizing medium is rapidly introduced into the high-pressure tank 40 for temporary storage through the first high-pressure inflation passage 22 by means of the pressure difference, at this time the capsule 11 is deflated and shrinks, but still retains part of the high-temperature and high-pressure vulcanizing medium; then the remaining part of the high-temperature and high-pressure vulcanizing medium in the capsule 11 is introduced into the low-pressure tank 30 for temporary storage through the capsule shaping inflation passage 21; then the capsule 11 is pumped to negative pressure, and the small part of the high-temperature and high-pressure vulcanizing medium remaining in the capsule 11 is introduced into the high-pressure tank 40 or the low-pressure tank 30 for temporary storage, so as to empty the vulcanizing medium in the capsule, finally the vulcanized green tire is unloaded, and the next vulcanization operation is carried out by replacing the green tire to be vulcanized; before the next green tire is vulcanized, the vulcanizing medium temporarily stored in the high-pressure tank 40 is introduced into the capsule through the capsule shaping inflation passage 22 to make the capsule expand and shape, or the vulcanizing medium temporarily stored in the low-pressure tank 30 is introduced into the capsule through the capsule shaping inflation passage 21 to make the capsule expand and shape, then the vulcanizing medium temporarily stored in the high-pressure tank 40 is introduced into the capsule through the first high-pressure inflation passage 22 and the second high-pressure inflation passage 23, and the pressure in the capsule is continuously raised to the first predetermined value and the second predetermined value, finally the vulcanizing medium recovered during the previous vulcanization is introduced into the medium vulcanization passage 20 for recycling, so as to improve the utilization rate of the vulcanizing medium. Therefore, the technical scheme disclosed by the present application can make full use of the vulcanizing medium and reduce waste, and by designing the structure and positional relationship of the capsule shaping inflation passage, the first high-pressure inflation passage and the second high-pressure inflation passage, the capsule can be pressurized three times in an incremental manner, and only during the third pressurization, the pressure pump is used for pressurization, so as to reduce the use frequency and number of the pump, thereby prolonging the service life of the pump and reducing the cost. In addition, compared with the prior art, the pressure in the high-pressure tank can be greatly reduced to improve safety.

[0027] It should be noted that the pressure stabilizing passage 24 of the present application can store excessive pressure when the pressure in the capsule reaches the first predetermined value, and the pressure stabilizing passage can fine-tune the first predetermined value in the capsule to achieve a better pressure value for the expansion of the capsule. In addition, the structure of the mold 10, the valve assembly and the working principle of the present application are substantially the same as those in the patent application No. 2021200742863, and will not be described here.

[0028] The vulcanizing medium of the present application is provided with a high-pressure medium supply source 90 to provide the vulcanizing medium composed of gas or air, achieving the effect of providing a large amount of vulcanizing medium or supplementing the loss of the vulcanizing medium due to the previous introduction and multiple recycling.

[0029] In addition, the present application discloses a new energy tire vulcanization method, which comprises the following steps: first, the low-pressure tank or the vulcanizing medium of the high-pressure tank is introduced into the capsule through the capsule shaping inflation passage 21, so that the pressure in the capsule reaches the first predetermined value; then, the vulcanizing medium of the high-pressure tank is introduced into the capsule through the first high-pressure inflation passage 22, so that the pressure in the capsule continues to rise to the second predetermined value; then, the vulcanizing medium of the high-pressure tank is introduced into the capsule through the pressure pump 231 in the second high-pressure inflation passage 23, so that the pressure in the capsule continues to rise to the third predetermined value, i.e. the required pressure value during tire vulcanization; when the tire vulcanization process is completed; first, the vulcanizing medium in the capsule is partially discharged to the high-pressure tank through the first high-pressure inflation passage 22, so that the pressure in the capsule is reduced to the fourth pressure value; then, the vulcanizing medium in the capsule is partially discharged to the low-pressure tank through the capsule shaping inflation passage 21, so that the pressure in the capsule continues to decrease to the fifth pressure value; finally, the pressure in the capsule is extracted to negative pressure through the pressure pump 231, so that the vulcanizing medium in the capsule is introduced into the low-pressure tank or the high-pressure tank, so as to empty the vulcanizing medium in the capsule, and unload the vulcanized tire.

[0030] The first predetermined value, the second predetermined value and the third predetermined value in the present application have different values according to different tire specifications, production processes, etc., but the applicant has concluded through repeated experiments that the second predetermined value is 10 times or more than the first predetermined value, and the third predetermined value is 1.25 to 1.5 times the second predetermined value, which is a better value for vulcanization. In addition, after the tire vulcanization process is completed, preferably, the fourth pressure value in the capsule is 1.5 Mpa to 2 Mpa, and the fifth pressure value in the capsule is 1 Mpa to 1.5 Mpa. In addition, the present application also includes a pressure stabilizing tank for fine-tuning the first predetermined value in the capsule.

[0031] Specifically, for example, taking a 245 / 50R17 semi-steel tire as an example, the first predetermined value is 0.1 Mpa and below, the second predetermined value is 1 Mpa-1.2 Mpa, and the third predetermined value is 1.5 Mpa and above, which are the preferred three-time pressure increasing predetermined values for tire vulcanization; again, taking a 12R22.5 full-steel tire as an example, the first predetermined value is 0.1 Mpa and below, the second predetermined value is 1 Mpa-1.6 Mpa, and the third predetermined value is 2 Mpa and above, which are the preferred three-time pressure increasing predetermined values for tire vulcanization. In addition, the vulcanization time and temperature of the tire can be set according to different tire specifications, production processes, etc., and will not be described here.

[0032] Each heating component described in the present application can be in the form of electric heating, induction heating, armored heater, plate heater, box heater, belt heater, or cast-in heater, etc., and the present application prefers the electromagnetic heating mode.

[0033] In addition, the pressure control, temperature control, control of each on-off valve / proportional valve, etc. described in the present application can be realized by an MCU control system or a PLC control system. For those skilled in the mechanical automation field, the above controls are all known and conventional technologies in the art, and are not the innovative points of the present application. Therefore, the control part will not be described here.

[0034] In summary, the new energy tire vulcanization method disclosed in the present application mainly realizes the purpose of reducing cost by reducing the use amount of the pump through three-time incremental pressure increase of the capsule and using the pressure pump for pressure increase only in the third time. In addition, compared with the prior art, the pressure in the high-pressure tank can be greatly reduced to improve safety.

[0035] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An inert gas vulcanization method for new energy tires, wherein, The capsule shaping inflation passage and the first high-pressure inflation passage are not equipped with pressure pumps, but a pressure pump is installed in the second high-pressure inflation passage. The feature is that it includes the following steps: First, inert gas pre-stored in the low-pressure tank or high-pressure tank or recovered during the previous vulcanization is introduced into the capsule through the capsule shaping and inflation channel, so that the pressure inside the capsule reaches the first predetermined value. Then, inert gas from the high-pressure tank is introduced into the capsule through the first high-pressure inflation channel, causing the pressure inside the capsule to rise to the second predetermined value. The inert gas from the high-pressure tank is introduced into the capsule through the second high-pressure inflation channel, so that the pressure inside the capsule continues to rise to the third predetermined value. After the tire vulcanization process is completed; First, the high-temperature, high-pressure inert gas inside the capsule is partially discharged to the high-pressure tank through the first high-pressure inflation channel, thereby reducing the pressure inside the capsule to the fourth pressure value. Then, through the capsule shaping and inflation channel, part of the high-temperature and high-pressure inert gas inside the capsule is discharged to the low-pressure tank, so that the pressure inside the capsule continues to decrease to the fifth pressure value; Finally, the pressure inside the capsule is reduced to negative pressure using a pressure pump to expel the high-temperature, high-pressure inert gas inside the capsule and unload the vulcanized tire.

2. The inert gas vulcanization method for new energy tires according to claim 1, characterized in that, The second predetermined value is 10 times or more of the first predetermined value.

3. The inert gas vulcanization method for new energy tires according to claim 2, characterized in that, The third predetermined value is 1.25 to 1.5 times the second predetermined value.

4. The inert gas vulcanization method for new energy tires according to claim 1, characterized in that, The pressure inside the capsule is reduced to a fourth pressure value of 1.5 MPa to 2 MPa.

5. The inert gas vulcanization method for new energy tires according to claim 4, characterized in that, The pressure inside the capsule continues to decrease to a fifth pressure value of 1 MPa to 1.5 MPa.

6. The inert gas vulcanization method for new energy tires according to claim 1, characterized in that, The inert gas inside the capsule is introduced into a low-pressure tank or a high-pressure tank using a pressure pump.

7. The inert gas vulcanization method for new energy tires according to any one of claims 1 to 6, characterized in that, It also includes a pressure stabilizing vessel for fine-tuning the size of a first predetermined value within the capsule.

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