Inert gas application mold closing force control device for tire vulcanizer and control method thereof

Abstract

The present application provides a kind of inert gas application closing force control device for tire vulcanizing machine and its control method, the control device includes: inert gas source for providing the inert gas of required pressure;Pressurizing device for applying closing force when tire vulcanizing;Pressure sensor for sensing the pressure in pressurizing device;Pressure-boosting allow cut-off valve is arranged on the pipeline between inert gas source and pressurizing device, pressure-boosting allow cut-off valve is three-way cut-off valve, the first interface of pressure-boosting allow cut-off valve is used to communicate with inert gas source, the second interface of pressure-boosting allow cut-off valve is used to communicate with pressurizing device, the third interface of pressure-boosting allow cut-off valve is used to communicate with inert gas recovery equipment;Pressure-boosting cut-off valve is arranged on the pressure-boosting pipeline between pressure-boosting allow cut-off valve and the pressurizing device;Pressure valve is arranged on the pressurization pipeline between pressure-boosting allow cut-off valve and the pressurizing device, and pressure valve is used to adjust the pressure of pressurizing device.

Description

Technical Field

[0001] The present invention relates to the field of tire vulcanizers, and in particular to an inert gas clamping force control device for a tire vulcanizer and a control method thereof. Background Art

[0002] In tire production, hydraulic oil pushes a pressurized cylinder to provide mold clamping force during tire vulcanization. This hydraulic control system typically requires the installation of corresponding cylinders, oil inlet and return lines, and control valves. This poses a high risk of hydraulic oil leakage during actual production, and the installation, commissioning, and maintenance of hydraulic control systems are complex. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention discloses an inert gas clamping force control device and a control method for a tire vulcanizer, which utilizes inert gas to apply the clamping force required for tire vulcanization. By adopting inert gas drive, there is no arc and spark, which is safer, reduces the risk of hydraulic oil leakage, and is more convenient to install, debug and maintain.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention provides: (1) an inert gas-applied clamping force control device for a tire vulcanizer, the inert gas-applied clamping force control device comprising: an inert gas source for providing inert gas of required pressure; a pressurizing device for applying clamping force during tire vulcanization; a pressure sensor for sensing the pressure in the pressurizing device; a boost-allowed cut-off valve arranged on a pipeline between the inert gas source and the pressurizing device, the boost-allowed cut-off valve being a three-way cut-off valve, the first interface of the boost-allowed cut-off valve being used to communicate with the inert gas source, the second interface of the boost-allowed cut-off valve being used to communicate with the pressurizing device, and the third interface of the boost-allowed cut-off valve being used to communicate with an inert gas recovery device; a boost-allowed cut-off valve being arranged on a pressurizing pipeline between the boost-allowed cut-off valve and the pressurizing device; a pressurizing valve being arranged on a pressurizing pipeline between the boost-allowed cut-off valve and the pressurizing device, the pressurizing valve being used to adjust the pressure of the pressurizing device.

[0005] (2) In the inert gas mold clamping force control device as described in item (1), the boost permission cut-off valve, the boost cut-off valve and the pressurizing valve are pneumatically controlled cut-off valves, and the caliber of the pressurizing valve is smaller than the calibers of the boost permission cut-off valve and the boost cut-off valve, and the boost permission cut-off valve, the boost cut-off valve and the pressurizing valve are connected to the control air source through corresponding solenoid valves respectively.

[0006] (3) In the inert gas mold clamping force control device as described in item (1), the boost permission cut-off valve and the boost cut-off valve are pneumatically controlled cut-off valves, and the pressurizing valve is a pneumatically controlled regulating valve. The boost permission cut-off valve and the boost cut-off valve are connected to the control air source through corresponding solenoid valves respectively, and the pressurizing valve is connected to the control air source through an IP valve.

[0007] (4) The inert gas application mold clamping force control device as described in any one of items (1) to (3), further comprising a one-way valve provided between the inert gas source and the pressurization allowing shutoff valve.

[0008] (5) The inert gas-applied mold clamping force control device as described in item (4) is further provided with a safety valve on the rear end pipeline of the boosting pipeline and the pressurizing pipeline.

[0009] The embodiment of the present invention further provides: (6) an inert gas-applied mold clamping force control method, used for the inert gas-applied mold clamping force control device as described in any one of items (1) to (5), the inert gas-applied mold clamping force control method comprising: after the vulcanizer is mold-clamped and locked in place, controlling the first interface of the boost permission cut-off valve to be connected to the second interface and simultaneously connecting the boost cut-off valve, so that the inert gas flows into the pressurizing device through the boost permission cut-off valve and the boost cut-off valve; collecting the pressure value of the pressurizing device through the pressure sensor, When the pressure value reaches the switching set value, the boost cut-off valve is controlled to be disconnected; according to the pressure value of the pressurizing device, the leakage pressure is supplemented to the pressurizing device through the pressurizing pipeline by controlling the pressurizing valve, so as to keep the pressure in the pressurizing device stable; after the vulcanization of the vulcanizer is completed, the pressurizing valve is controlled to be disconnected, and the second interface and the third interface of the boost permission cut-off valve are controlled to be connected, and at the same time, the boost cut-off valve is controlled to be connected, so that the inert gas of the pressurizing device is discharged into the inert gas recovery equipment through the boost cut-off valve and the boost permission cut-off valve.

[0010] The embodiment of the present invention also provides: (7) an inert gas-applied clamping force control device for a tire vulcanizer, the inert gas-applied clamping force control device comprising: an inert gas source for providing inert gas of required pressure; a pressurizing device for applying clamping force during tire vulcanization; a pressure sensor for sensing the pressure in the pressurizing device; a boost cut-off valve disposed on a pipeline between the inert gas source and the pressurizing device; a boost cut-off valve disposed on a pressurizing pipeline between the boost cut-off valve and the pressurizing device; a pressurizing valve disposed on a pressurizing pipeline between the boost cut-off valve and the pressurizing device, the pressurizing valve being used to adjust the pressure of the pressurizing device; and a pressure relief cut-off valve disposed on a pressure relief pipeline between the pressurizing device and an inert gas recovery device.

[0011] An embodiment of the present invention also provides: (8) an inert gas-applied mold clamping force control method, which is used for the inert gas-applied mold clamping force control device as described in item (7), and the inert gas-applied mold clamping force control method includes: after the vulcanizer is locked in place, controlling the boost permission cut-off valve to be connected and the boost cut-off valve to be connected at the same time, so that the inert gas flows into the pressurizing device through the boost permission cut-off valve and the boost cut-off valve; collecting the pressure value of the pressurizing device through the pressure sensor, and when the pressure value reaches the switching set value, controlling the boost cut-off valve to be disconnected; according to the pressure value of the pressurizing device, controlling the pressurizing valve to supplement the leakage pressure to the pressurizing device through the pressurizing pipeline, thereby maintaining the pressure in the pressurizing device stable; after the vulcanization of the vulcanizer is completed, controlling the pressurizing valve and the boost permission cut-off valve to be disconnected, and controlling the pressure relief cut-off valve to be connected, so that the inert gas in the pressurizing device is discharged into the inert gas recovery equipment through the pressure relief cut-off valve.

[0012] The embodiment of the present invention also provides: (9) an inert gas-applied mold clamping force control device for a tire vulcanizer, the inert gas-applied mold clamping force control device comprising: an inert gas source for providing inert gas of required pressure; a pressurizing device for applying a mold clamping force during tire vulcanization; a pressure sensor for sensing the pressure in the pressurizing device; a boost-allowing shut-off valve disposed on a pipeline between the inert gas source and the pressurizing device; a regulating valve disposed on a pipeline between the boost-allowing shut-off valve and the pressurizing device; and a pressure relief shut-off valve disposed on a pressure relief pipeline between the pressurizing device and an inert gas recovery device.

[0013] An embodiment of the present invention also provides: (10) an inert gas-applied mold force control method, which is used for the inert gas-applied mold force control device as described in item (9), and the inert gas-applied mold force control method comprises: after the vulcanizer is locked in place, controlling the boost permission cut-off valve to be connected and adjusting the opening of the regulating valve to the maximum, so that the inert gas flows into the pressurizing device through the boost permission cut-off valve and the regulating valve; collecting the pressure value of the pressurizing device through the pressure sensor, and when the pressure value reaches the switching set value, controlling the regulating valve to be disconnected; according to the pressure value of the pressurizing device, controlling the opening size of the regulating valve to supplement the leakage pressure to the pressurizing device, thereby keeping the pressure in the pressurizing device stable; after the vulcanization of the vulcanizer is completed, controlling the regulating valve and the boost permission cut-off valve to be disconnected, and controlling the pressure relief cut-off valve to be connected, so that the inert gas in the pressurizing device is discharged to the inert gas recovery equipment through the pressure relief cut-off valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 12 is a schematic structural diagram of an inert gas clamping force control device according to an embodiment of the present invention;

[0015] Figure 2 2 is a schematic structural diagram of an inert gas clamping force control device according to an embodiment of the present invention;

[0016] Figure 3 is a schematic structural diagram of an inert gas clamping force control device according to an alternative embodiment of the present invention;

[0017] Figure 4 2 is a schematic structural diagram of an inert gas clamping force control device according to another alternative embodiment of the present invention. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below in conjunction with specific embodiments, but the present invention is not limited to these embodiments.

[0019] like Figure 1 and Figure 2 As shown in FIG. 1 , the inert gas clamping force control device according to the present invention comprises: an inert gas source 101 for providing inert gas of required pressure (the specific pressure value depends on the tire vulcanization requirements); a pressurizing device 102 for applying the clamping force during tire vulcanization; a pressure sensor 103 for sensing the pressure in the pressurizing device 102; and a pressurization permission cut-off valve 104 provided on the pipeline between the inert gas source 101 and the pressurizing device 102. Figure 1 As shown, the boost permission cut-off valve 104 is a three-way cut-off valve, the first interface of the boost permission cut-off valve 104 (i.e., port 1 shown in the figure) is used to communicate with the inert gas source 101, the second interface of the boost permission cut-off valve 104 (i.e., port 2 shown in the figure) is used to communicate with the pressurizing device 102, and the third interface of the boost permission cut-off valve 104 (i.e., port 3 shown in the figure) is used to communicate with the inert gas recovery equipment (not shown in the figure); the boost permission cut-off valve 105 is arranged on the boosting pipeline 107 between the boost permission cut-off valve 104 and the pressurizing device 102; the pressurizing valve 106 is arranged on the pressurizing pipeline 108 between the boost permission cut-off valve 104 and the pressurizing device 102, and the pressurizing valve 106 is used to adjust the pressure of the pressurizing device 102 (for example, to supplement the leakage pressure of the pressurizing device 102).

[0020] Regarding the inert gas clamping force control device of the present invention as described above, the specific control method is as follows:

[0021] (1) After the vulcanizer is locked in place, the first interface of the boosting permission cut-off valve 104 is controlled to be connected to the second interface, and the boosting cut-off valve 105 is connected, so that the inert gas flows into the pressurizing device 102 through the boosting permission cut-off valve 104 and the boosting cut-off valve 105;

[0022] (2) The pressure value of the pressurizing device 2 is collected through the pressure sensor 103. When the pressure value reaches the switching set value, the boost cut-off valve 105 is controlled to be disconnected, so that the inert gas cannot flow into the pressurizing device 102 through the boost pipe 107;

[0023] (3) According to the pressure value of the pressurizing device 102 sensed by the pressure sensor 103, the pressure valve 106 is controlled to supplement the leakage pressure to the pressurizing device 102 via the pressurizing pipeline 108, thereby maintaining the pressure in the pressurizing device 102 stable;

[0024] (4) After the vulcanization of the vulcanizer is completed, the pressure valve 106 is controlled to be disconnected, and the second interface of the boost permission cut-off valve 104 is controlled to be connected to the third interface, and the boost permission cut-off valve 105 is controlled to be connected, so that the inert gas of the pressurizing device 2 is discharged into the inert gas recovery equipment through the boost permission cut-off valve 105 and the boost permission cut-off valve 104.

[0025] When the pressure in the pressurizing device 2 is lower than the set value for allowing the mold to be loosened and opened, the vulcanizing machine can be loosened and opened. Figure 1 and Figure 2 As shown, a three-way shut-off valve may also be used, and the three ports of the boost shut-off valve 105 may be blocked. In this case, when the inert gas needs to flow into or be discharged from the pressurizing device 102 through the boost pipeline 107 (i.e., the above-mentioned steps (1) and (4)), the ports 1 and 2 of the boost shut-off valve 105 can be controlled to be connected. Similarly, when the boost pipeline 107 needs to be cut off (i.e., the above-mentioned step (2)), the ports 2 and 3 of the boost shut-off valve 105 can be controlled to be connected.

[0026] In addition, regarding the boost allow cut-off valve 104, the boost cut-off valve 105 and the pressurizing valve 106, an electrically controlled cut-off valve may be used. However, in consideration of safety and cost performance, it is preferred that the boost allow cut-off valve 104, the boost cut-off valve 105 and the pressurizing valve 106 be electrically controlled. Figure 1As shown, the boost-allowed shut-off valve 104, the boost-allowed shut-off valve 105, and the pressurizing valve 106 can all be pneumatically controlled shut-off valves, and the pressurizing valve 106 can have a smaller diameter than the boost-allowed shut-off valve 104 and the boost-allowed shut-off valve 105. For example, the boost-allowed shut-off valve 104 and the boost-allowed shut-off valve 105 can be ROCKY's TPC2312-20 shut-off valve, and the pressurizing valve 106 can be ROCKY's TPC2312-15 shut-off valve. In this case, the boost-allowed shut-off valve 104, the boost-allowed shut-off valve 105, and the pressurizing valve 106 are each connected to the control air source 201 via a corresponding solenoid valve (SV1-SV3), thereby controlling the shut-off of the boost-allowed shut-off valve 104, the boost-allowed shut-off valve 105, and the pressurizing valve 106 via the corresponding solenoid valve (SV1-SV3).

[0027] In the case where the pressure valve 106 is a pneumatically controlled shut-off valve (e.g. Figure 1 As shown), in the above step (3), inert gas is added to the pressurizing device 2 by controlling the connection or disconnection of the pressurizing valve 106 according to the sensed pressure value in the pressurizing device 2.

[0028] In a preferred embodiment, if Figure 2 As shown, the pressurizing valve 106 can be a pneumatically controlled regulating valve, such as a diaphragm regulating valve model DC1212-15 (CV=1) from ROCKY. In this case, the pressurizing valve 106 is connected to the control air source 201 via an IP valve 109. For example, the IP valve model ITV2030-0CS2 from SMC can be used.

[0029] In the case where the pressure boosting valve 106 adopts a pneumatically controlled regulating valve, in the above step (3), the PLC controller outputs a corresponding control signal to the IP valve by receiving the pressure value in the pressure boosting device 2 sensed by the pressure sensor, thereby replenishing the leakage pressure in the pressure boosting device 2 by controlling the opening size of the pressure boosting valve 106.

[0030] Furthermore, in order to prevent the inert gas from flowing back, a one-way valve 110 may be provided between the inert gas source 101 and the pressurization allowing cut-off valve 104 .

[0031] In addition, a safety valve (1AF) 111 may be provided on the rear end of the boosting line 107 and the pressurizing line 108 so that when the pressure in the pressurizing device 2 is too high, the safety valve 111 may be opened to discharge the gas.

[0032] Alternative Example 1

[0033] See also Figure 3 , which shows an alternative embodiment of the inert gas application clamping force control device according to the present invention.

[0034] like Figure 3 As shown, the inert gas clamping force control device according to the present invention includes: an inert gas source 101, used to provide inert gas of required pressure; a pressurizing device 102, used to apply clamping force during tire vulcanization; a pressure sensor 103, used to sense the pressure in the pressurizing device 102; a boost permission cut-off valve 104, provided on the pipeline between the inert gas source 101 and the pressurizing device 102; a boost permission cut-off valve 105, provided on the boost pipeline 107 between the boost permission cut-off valve 104 and the pressurizing device 102; a pressurizing valve 106, provided on the pressurizing pipeline 108 between the boost permission cut-off valve 104 and the pressurizing device 102, and the pressurizing valve 106 is used to adjust the pressure of the pressurizing device 102; and a pressure relief cut-off valve 112, provided on the pressure relief pipeline 113 between the pressurizing device 102 and the inert gas recovery equipment.

[0035] Obviously, it is understandable that the boost-allowing shut-off valve 104, the boost-allowing shut-off valve 105, the pressurizing valve 106, and the pressure-relief shut-off valve 112 may all be pneumatic shut-off valves with one inlet and one outlet, and that the boost-allowing shut-off valve 104, the boost-allowing shut-off valve 105, the pressurizing valve 106, and the pressure-relief shut-off valve 112 are each connected to the control air source 201 via a corresponding solenoid valve. Furthermore, the pressurizing valve 106 may also preferably be a pneumatic regulating valve as described above. In this case, the pressurizing valve 106 is connected to the control air source 201 via an IP valve.

[0036] In addition, the safety valve 111 as described above can also be provided on the pipelines at the rear ends of the boosting pipeline 107 and the pressurizing pipeline 108, so that when the pressure in the pressurizing device 2 is too high, the safety valve 111 can be opened to exhaust the air.

[0037] In this alternative embodiment 1, the control method of the inert gas application clamping force control device is as follows:

[0038] (1) After the vulcanizer is locked in place, the boost cut-off valve 104 is controlled to be turned on and the boost cut-off valve 105 is turned on at the same time, so that the inert gas flows into the pressurizing device 102 through the boost cut-off valve 104;

[0039] (2) The pressure value of the pressurizing device 102 is collected through the pressure sensor 103. When the pressure value reaches the switching set value, the boost cut-off valve 105 is controlled to be disconnected;

[0040] (3) According to the pressure value of the pressurizing device 102, the pressure is supplemented to the pressurizing device 102 via the pressurizing pipeline 108 by controlling the pressurizing valve 106, thereby maintaining the pressure in the pressurizing device 102 stable;

[0041] (4) After the vulcanization of the vulcanizer is completed, the pressurizing valve 106 and the pressure-enabling shut-off valve 104 are controlled to be disconnected, and the pressure relief shut-off valve 112 is controlled to be connected, so that the inert gas in the pressurizing device 102 is discharged into the inert gas recovery equipment through the pressure relief shut-off valve 112.

[0042] When the pressure in the pressure device 2 is lower than the set value allowing the mold to be loosened and opened, the vulcanizer can be loosened and opened.

[0043] Alternative Example 2

[0044] See also Figure 4 , which shows another alternative embodiment of the inert gas clamping force control device according to the present invention.

[0045] like Figure 4 As shown, the inert gas clamping force control device according to the present invention includes: an inert gas source 101, which is used to provide inert gas of required pressure; a pressurizing device 102, which is used to apply clamping force to the tire vulcanizer; a pressure sensor 103, which is used to sense the pressure in the pressurizing device 102; a boost permission cut-off valve 104, which is arranged on the pipeline between the inert gas source 101 and the pressurizing device 102; a pressurizing valve 106, which is a regulating valve, which is arranged on the pipeline between the boost permission cut-off valve 104 and the pressurizing device 102; and a pressure relief cut-off valve 112, which is arranged on the pressure relief pipeline 113 between the pressurizing device 102 and the inert gas recovery equipment.

[0046] Obviously, it is understandable that a one-in-one-out two-way pneumatic shut-off valve may be used for the pressurization permission shut-off valve 104 and the pressure relief shut-off valve 112. In this case, the pressurization permission shut-off valve 104 and the pressure relief shut-off valve 112 are communicated with the control air source 201 via corresponding solenoid valves.

[0047] Regarding the regulating valve 106 , it may be a pneumatically controlled regulating valve as described above. In this case, the regulating valve 106 is connected to the control air source via the IP valve 109 .

[0048] In this alternative embodiment 2, the control method of the inert gas application clamping force control device is as follows:

[0049] (1) After the vulcanizer is locked in place, the boosting and allowing shut-off valve 104 is controlled to be connected and the opening of the regulating valve 106 is adjusted to the maximum, so that the inert gas flows into the pressurizing device 102 through the boosting and allowing shut-off valve 104 and the regulating valve 106;

[0050] (2) The pressure value of the pressurizing device 102 is collected by the pressure sensor 103. When the pressure value reaches the switching set value, the regulating valve 106 is controlled to be disconnected;

[0051] (3) According to the pressure value of the pressurizing device 102, the opening size of the regulating valve 106 is controlled to supplement the leakage pressure to the pressurizing device 102, so as to keep the pressure in the pressurizing device 102 stable;

[0052] (4) After the vulcanization of the vulcanizing machine is completed, the regulating valve 106 and the pressurizing permission cut-off valve 104 are controlled to be disconnected, and the pressure relief cut-off valve 112 is controlled to be connected, so that the inert gas in the pressurizing device 102 is discharged into the inert gas recovery equipment through the pressure relief cut-off valve 112.

[0053] The inert gas mold clamping force control device according to the above-mentioned embodiments of the present application has the following advantages: the inert gas has stable physical and chemical properties, and has a small expansion coefficient affected by temperature; no matter what causes the pressure drop in the pressure maintaining circuit, the pressurizing valve or the regulating valve can supplement the leakage pressure to keep the circuit pressure constant; the inert gas is driven, no electric arc and spark, and the safety is high; the inert gas is more convenient to obtain, and can be reused; when the pressure in the pressurizing device is too high, the safety valve (1AF) is opened to discharge the gas, and the safety is high; the vulcanizing machine can be more reliably operated, the risk of hydraulic oil leakage is reduced, and the installation, debugging and maintenance are more simple.

[0054] The above-mentioned is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. An inert gas clamping force control device for a tire vulcanizer, characterized in that: The inert gas clamping force control device comprises: An inert gas source, used to provide inert gas at required pressure; A pressurizing device, used to apply clamping force during tire vulcanization; a pressure sensor, configured to sense the pressure within the pressurizing device; a pressurization permission cut-off valve, arranged on the pipeline between the inert gas source and the pressurizing device, wherein the pressurization permission cut-off valve is a three-way cut-off valve, wherein a first interface of the pressurization permission cut-off valve is used to communicate with the inert gas source, a second interface of the pressurization permission cut-off valve is used to communicate with the pressurizing device, and a third interface of the pressurization permission cut-off valve is used to communicate with the inert gas recovery equipment; A boost cut-off valve is provided on the boost pipeline between the boost permission cut-off valve and the pressurizing device; The pressurizing valve is arranged on the pressurizing pipeline between the boost allowing cut-off valve and the pressurizing device, and is used to adjust the pressure of the pressurizing device.

2. The inert gas application mold clamping force control device according to claim 1, characterized in that: The boost permission cut-off valve, the boost cut-off valve and the pressurizing valve are pneumatically controlled cut-off valves, and the caliber of the pressurizing valve is smaller than the caliber of the boost permission cut-off valve and the boost cut-off valve. The boost permission cut-off valve, the boost cut-off valve and the pressurizing valve are respectively connected to the control air source through corresponding solenoid valves.

3. The inert gas application mold clamping force control device according to claim 1, characterized in that: The boost permission cut-off valve and the boost cut-off valve are pneumatically controlled cut-off valves, and the pressurizing valve is a pneumatically controlled regulating valve. The boost permission cut-off valve and the boost cut-off valve are respectively connected to the control air source through corresponding solenoid valves, and the pressurizing valve is connected to the control air source through an IP valve.

4. The inert gas application mold clamping force control device according to any one of claims 1 to 3, characterized in that: A one-way valve is further provided between the inert gas source and the pressurization allowing cut-off valve.

5. The inert gas application mold clamping force control device according to claim 4, characterized in that: Safety valves are also provided on the boost pipeline and the rear end pipeline of the pressurized pipeline.

6. A method for controlling mold clamping force by applying inert gas, used in the mold clamping force control device by applying inert gas according to any one of claims 1 to 5, characterized in that: The method for controlling the mold clamping force by applying an inert gas comprises: After the vulcanizer is mold-clamped and locked in place, controlling the first interface and the second interface of the boosting permission cut-off valve to be connected and simultaneously connecting the boosting cut-off valve, so that the inert gas flows into the pressurizing device through the boosting permission cut-off valve and the boosting cut-off valve; The pressure sensor collects the pressure value of the pressurizing device, and when the pressure value reaches the switching set value, controls the boost cut-off valve to disconnect; According to the pressure value of the pressurizing device, the pressurizing valve is controlled to supplement the leakage pressure to the pressurizing device through the pressurizing pipeline, thereby maintaining the pressure in the pressurizing device stable; After the vulcanization of the vulcanizer is completed, the pressurizing valve is controlled to be disconnected, and the second interface of the boost permission cut-off valve is controlled to be connected to the third interface, and at the same time, the boost permission cut-off valve is controlled to be connected, so that the inert gas of the pressurizing device is discharged into the inert gas recovery equipment through the boost permission cut-off valve and the boost permission cut-off valve.

7. An inert gas clamping force control device for a tire vulcanizer, characterized in that: The inert gas clamping force control device comprises: An inert gas source, used to provide inert gas at required pressure; A pressurizing device, used to apply clamping force during tire vulcanization; a pressure sensor, configured to sense the pressure within the pressurizing device; A pressurization cut-off valve is provided on the pipeline between the inert gas source and the pressurizing device; A boost cut-off valve is provided on the boost pipeline between the boost permission cut-off valve and the pressurizing device; A pressure valve is provided on the pressure pipeline between the pressure-boosting cut-off valve and the pressure device, and is used to adjust the pressure of the pressure device; The pressure relief cut-off valve is arranged on the pressure relief pipeline between the pressurizing device and the inert gas recovery equipment.

8. A method for controlling mold clamping force by applying inert gas, used in the mold clamping force control device by applying inert gas according to claim 7, characterized in that: The method for controlling the mold clamping force by applying an inert gas comprises: After the vulcanizer is mold-clamped and locked in place, controlling the boosting permission cut-off valve to be turned on and simultaneously turning on the boosting cut-off valve, so that the inert gas flows into the pressurizing device through the boosting permission cut-off valve and the boosting cut-off valve; The pressure sensor collects the pressure value of the pressurizing device, and when the pressure value reaches the switching set value, controls the boost cut-off valve to disconnect; According to the pressure value of the pressurizing device, the pressurizing valve is controlled to supplement the leakage pressure to the pressurizing device through the pressurizing pipeline, thereby maintaining the pressure in the pressurizing device stable; After the vulcanization of the vulcanizer is completed, the pressurizing valve and the pressurization permission cut-off valve are controlled to be disconnected, and the pressure relief cut-off valve is controlled to be connected, so that the inert gas in the pressurizing device is discharged into the inert gas recovery equipment through the pressure relief cut-off valve.

9. An inert gas clamping force control device for a tire vulcanizer, characterized in that: The inert gas clamping force control device comprises: An inert gas source, used to provide inert gas at required pressure; A pressurizing device, used to apply clamping force during tire vulcanization; a pressure sensor, configured to sense the pressure within the pressurizing device; A pressurization cut-off valve is provided on the pipeline between the inert gas source and the pressurizing device; a regulating valve, arranged on the pipeline between the boosting permission cut-off valve and the pressurizing device; The pressure relief cut-off valve is arranged on the pressure relief pipeline between the pressurizing device and the inert gas recovery equipment.

10. A method for controlling mold clamping force by applying inert gas, used in the mold clamping force control device by applying inert gas according to claim 9, characterized in that: The method for controlling the mold clamping force by applying an inert gas comprises: After the vulcanizer is locked in place, the pressure-enabling cut-off valve is controlled to be connected and the opening of the regulating valve is adjusted to the maximum, so that the inert gas flows into the pressurizing device through the pressure-enabling cut-off valve and the regulating valve; The pressure sensor collects the pressure value of the pressurizing device, and when the pressure value reaches the switching set value, controls the regulating valve to disconnect; According to the pressure value of the pressurizing device, the opening of the regulating valve is controlled to supplement the leakage pressure to the pressurizing device, thereby maintaining the pressure in the pressurizing device stable; After the vulcanization of the vulcanizer is completed, the regulating valve and the pressure-enabling cut-off valve are controlled to be disconnected, and the pressure relief cut-off valve is controlled to be connected, so that the inert gas in the pressurizing device is discharged into the inert gas recovery equipment through the pressure relief cut-off valve.

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