CN114248479A - Inert gas applied mold clamping force control device for tire vulcanizer and control method thereof - Google Patents
Inert gas applied mold clamping force control device for tire vulcanizer and control method thereof Download PDFInfo
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- CN114248479A CN114248479A CN202011030178.2A CN202011030178A CN114248479A CN 114248479 A CN114248479 A CN 114248479A CN 202011030178 A CN202011030178 A CN 202011030178A CN 114248479 A CN114248479 A CN 114248479A
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- 239000011261 inert gas Substances 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 238000004073 vulcanization Methods 0.000 claims abstract description 13
- 230000001276 controlling effect Effects 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 12
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0662—Accessories, details or auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0662—Accessories, details or auxiliary operations
- B29D2030/0675—Controlling the vulcanization processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a control device and a control method for applying a mold clamping force by inert gas for a tire vulcanizer, the control device comprising: the inert gas source is used for providing inert gas with required pressure; a pressurizing device for applying a mold clamping force during tire vulcanization; a pressure sensor for sensing a pressure within the pressurizing device; the pressurization-allowable cut-off valve is arranged on a pipeline between the inert gas source and the pressurizing device, the pressurization-allowable cut-off valve is a three-way cut-off valve, a first interface of the pressurization-allowable cut-off valve is used for being communicated with the inert gas source, a second interface of the pressurization-allowable cut-off valve is used for being communicated with the pressurizing device, and a third interface of the pressurization-allowable cut-off valve is used for being communicated with the inert gas recovery device; a pressure increase cut-off valve arranged on a pressure increase pipeline between the pressure increase cut-off valve and the pressure device; and a pressurizing valve provided on a pressurizing line between the pressure-increasing-permitting cutoff valve and the pressurizing device, the pressurizing valve being for adjusting a pressure of the pressurizing device.
Description
Technical Field
The invention relates to the field of tire vulcanizing machines, in particular to a device and a method for controlling inert gas applying mold clamping force for a tire vulcanizing machine.
Background
In the production of tires, hydraulic oil pushes a pressurizing oil cylinder to provide mold clamping force when the tires are vulcanized. In the hydraulic control device, corresponding oil cylinders, oil inlet paths, oil return paths, control valves and the like are usually required to be arranged, the risk of hydraulic oil leakage is easy to occur in the actual production process, and the installation, debugging and maintenance of the hydraulic control device are complex.
Disclosure of Invention
In order to solve the technical problems, the invention discloses an inert gas applying mold clamping force control device and a control method thereof for a tire vulcanizer, wherein inert gas is used for applying mold clamping force required by tire vulcanization, and the inert gas is adopted for driving, so that no arc or spark exists, the safety is higher, the risk of hydraulic oil leakage is reduced, and the installation, debugging and maintenance are more convenient.
In order to achieve the purpose, the technical scheme of the invention provides: (1) an inert gas applied clamping force control apparatus for a tire vulcanizer, the inert gas applied clamping force control apparatus comprising: the inert gas source is used for providing inert gas with required pressure; a pressurizing device for applying a mold clamping force during tire vulcanization; a pressure sensor for sensing a pressure within the pressurizing device; the pressurization-allowing shut-off valve is arranged on a pipeline between an inert gas source and the pressurizing device, the pressurization-allowing shut-off valve is a three-way shut-off valve, a first interface of the pressurization-allowing shut-off valve is used for being communicated with the inert gas source, a second interface of the pressurization-allowing shut-off valve is used for being communicated with the pressurizing device, and a third interface of the pressurization-allowing shut-off valve is used for being communicated with an inert gas recovery device; a pressure increase cut-off valve arranged on a pressure increase pipeline between the pressure increase cut-off valve and the pressure device; and a pressurizing valve provided on a pressurizing line between the pressure-increasing-permission cutoff valve and the pressurizing device, the pressurizing valve being used for adjusting the pressure of the pressurizing device.
(2) The inert gas applied mold clamping force control device according to the item (1), wherein the pressure increase permission cut-off valve, the pressure increase cut-off valve and the pressure valve are pneumatically controlled cut-off valves, and the caliber of the pressure valve is smaller than the calibers of the pressure increase permission cut-off valve and the pressure valve, and the pressure increase permission cut-off valve, the pressure increase cut-off valve and the pressure valve are respectively communicated with a control gas source through corresponding solenoid valves.
(3) The inert gas applied mold clamping force control device according to the item (1), wherein the pressure-increasing permission cut-off valve and the pressure-increasing cut-off valve are pneumatically controlled cut-off valves, the pressure-increasing valve is a pneumatically controlled regulating valve, the pressure-increasing permission cut-off valve and the pressure-increasing cut-off valve are respectively communicated with the control gas source through corresponding solenoid valves, and the pressure-increasing valve is communicated with the control gas source through an IP valve.
(4) The inert gas applied mold clamping force control device according to any one of the items (1) to (3), further provided with a check valve between the inert gas source and the pressure increase permission cutoff valve.
(5) The inert gas applied mold clamping force control device according to the item (4), further comprising safety valves provided in the pressurizing line and a rear end line of the pressurizing line.
Embodiments of the invention also provide: (6) an inert gas applied clamping force control method for an inert gas applied clamping force control apparatus according to any one of the items (1) to (5), comprising: after the clamping and locking of the vulcanizing machine are in place, controlling the first interface and the second interface of the pressurization-allowable stop valve to be communicated and simultaneously enabling the pressurization-allowable stop valve to be communicated so that inert gas flows into the pressurizing device through the pressurization-allowable stop valve and the pressurization-allowable stop valve; the pressure sensor is used for acquiring the pressure value of the pressurizing device, and when the pressure value reaches a switching set value, the pressure-increasing cut-off valve is controlled to be disconnected; supplementing leakage pressure to the pressurizing device through the pressurizing pipeline by controlling the pressurizing valve according to the pressure value of the pressurizing device, so as to keep the pressure in the pressurizing device stable; after the vulcanization of the vulcanizing machine is finished, the pressurization valve is controlled to be switched off, the second interface and the third interface of the pressurization allowing cut-off valve are controlled to be switched on, and the pressurization cut-off valve is controlled to be switched on at the same time, so that the inert gas of the pressurization device is discharged into the inert gas recovery device through the pressurization cut-off valve and the pressurization allowing cut-off valve.
Embodiments of the invention also provide: (7) an inert gas applied clamping force control apparatus for a tire vulcanizer, the inert gas applied clamping force control apparatus comprising: the inert gas source is used for providing inert gas with required pressure; a pressurizing device for applying a mold clamping force during tire vulcanization; a pressure sensor for sensing a pressure within the pressurizing device; a pressure-increasing-permitting shut-off valve provided on a pipeline between the inert gas source and the pressurizing device; a pressure increase cut-off valve arranged on a pressure increase pipeline between the pressure increase cut-off valve and the pressure device; a pressurizing valve provided on a pressurizing line between the pressure-increase-permitting cutoff valve and the pressurizing means, the pressurizing valve being for adjusting a pressure of the pressurizing means; and the pressure relief cut-off valve is arranged on a pressure relief pipeline between the pressurizing device and the inert gas recovery device.
Embodiments of the invention also provide: (8) an inert gas applied clamping force control method for the inert gas applied clamping force control apparatus described in the item (7), comprising: after the clamping and locking of the vulcanizing machine are in place, controlling the pressurization allowing cut-off valve to be switched on and simultaneously switching on the pressurization cut-off valve so as to enable inert gas to flow into the pressurizing device through the pressurization allowing cut-off valve and the pressurization cut-off valve; the pressure sensor is used for acquiring the pressure value of the pressurizing device, and when the pressure value reaches a switching set value, the pressure-increasing cut-off valve is controlled to be disconnected; supplementing a leakage pressure to the pressurizing device via the pressurizing pipe by controlling the pressurizing valve according to a pressure value of the pressurizing device, thereby keeping the pressure in the pressurizing device stable; after the vulcanizing of the vulcanizing machine is finished, the pressurizing valve and the pressurization allowing cut-off valve are controlled to be disconnected, and the pressure relief cut-off valve is controlled to be switched on, so that the inert gas of the pressurizing device is discharged into the inert gas recovery device through the pressure relief cut-off valve.
Embodiments of the invention also provide: (9) an inert gas applied clamping force control apparatus for a tire vulcanizer, the inert gas applied clamping force control apparatus comprising: the inert gas source is used for providing inert gas with required pressure; a pressurizing device for applying a mold clamping force during tire vulcanization; a pressure sensor for sensing a pressure within the pressurizing device; the pressurization allowing cut-off valve is arranged on a pipeline between the inert gas source and the pressurization device; a regulating valve provided on a pipeline between the pressure increase permission cutoff valve and the pressurizing device; and the pressure relief cut-off valve is arranged on a pressure relief pipeline between the pressurizing device and the inert gas recovery device.
Embodiments of the invention also provide: (10) an inert gas applied clamping force control method for the inert gas applied clamping force control apparatus described in the above (9), comprising: after the mold closing of the vulcanizing machine is locked in place, controlling the pressurization allowing cut-off valve to be switched on and simultaneously adjusting the opening degree of the regulating valve to be maximum so as to enable inert gas to flow into the pressurizing device through the pressurization allowing cut-off valve and the regulating valve; collecting a pressure value of the pressurizing device through the pressure sensor, and controlling the regulating valve to be disconnected when the pressure value reaches a switching set value; controlling the opening size of the regulating valve according to the pressure value of the pressurizing device to supplement leakage pressure to the pressurizing device so as to keep the pressure in the pressurizing device stable; after the vulcanizing of the vulcanizing machine is finished, the regulating valve and the pressurization allowing cut-off valve are controlled to be disconnected, and the pressure relief cut-off valve is controlled to be switched on, so that the inert gas of the pressurizing device is discharged into the inert gas recovery device through the pressure relief cut-off valve.
Drawings
FIG. 1 is a schematic configuration diagram of an inert gas applied mold clamping force control apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic configuration diagram of an inert gas applied mold clamping force control apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic configuration diagram of an inert gas applied mold clamping force control apparatus according to an alternative embodiment of the present invention;
fig. 4 is a schematic configuration diagram of an inert gas applied mold clamping force control apparatus according to another alternative embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further described with reference to the following specific examples, but the present invention is not limited to these examples.
As shown in fig. 1 and 2, the inert gas applied clamping force control apparatus according to the present invention includes: an inert gas source 101 for providing inert gas at a desired pressure (the particular pressure value being dependent on the tire curing requirements); a pressing device 102 for applying a mold clamping force when the tire is vulcanized; a pressure sensor 103 for sensing the pressure inside the pressurizing means 102; a pressure increase permission cut-off valve 104 provided on a pipeline between the inert gas source 101 and the pressurizing device 102, as shown in fig. 1, the pressure increase permission cut-off valve 104 being a three-way cut-off valve, a first interface (i.e., 1 port shown in the figure) of the pressure increase permission cut-off valve 104 being for communication with the inert gas source 101, a second interface (i.e., 2 ports shown in the figure) of the pressure increase permission cut-off valve 104 being for communication with the pressurizing device 102, and a third interface (i.e., 3 ports shown in the figure) of the pressure increase permission cut-off valve 104 being for communication with an inert gas recovery apparatus (not shown in the figure); a pressure increase cutoff valve 105 provided on a pressure increase line 107 between the pressure increase permission cutoff valve 104 and the pressure device 102; and a pressurizing valve 106 provided on a pressurizing line 108 between the pressure-increase-permitting cutoff valve 104 and the pressurizing device 102, the pressurizing valve 106 being used to adjust the pressure of the pressurizing device 102 (for example, to supplement the leakage pressure of the pressurizing device 102).
The inert gas applied mold clamping force control device of the present invention described above is specifically controlled as follows:
(1) after the vulcanizer mold closing lock is in place, controlling the first interface of the pressurization-allowing shut valve 104 to be communicated with the second interface and simultaneously communicating the pressurization shut valve 105, so that the inert gas flows into the pressurizing device 102 through the pressurization-allowing shut valve 104 and the pressurization shut valve 105;
(2) the pressure sensor 103 is used for acquiring the pressure value of the pressurizing device 2, and when the pressure value reaches a switching set value, the pressure-increasing cut-off valve 105 is controlled to be disconnected, so that the inert gas cannot flow into the pressurizing device 102 through the pressure-increasing pipeline 107;
(3) supplementing the pressure device 102 with the leakage pressure via the pressure line 108 by controlling the pressure valve 106 according to the pressure value of the pressure device 102 sensed by the pressure sensor 103, thereby keeping the pressure in the pressure device 102 stable;
(4) after the vulcanization of the vulcanizer is completed, the pressurization valve 106 is controlled to be turned off, and the second port and the third port of the pressurization-permitting cutoff valve 104 are controlled to be turned on, while the pressurization cutoff valve 105 is controlled to be turned on, so that the inert gas of the pressurization device 2 is discharged to the inert gas recovery apparatus through the pressurization cutoff valve 105 and the pressurization-permitting cutoff valve 104.
When the pressure in the pressurizing device 2 is lower than a set value allowing unlocking and mold opening, the vulcanizing machine can unlock and mold the mold. As for the pressure-increasing cutoff valve 105, a common one-in one-out two-way cutoff valve may be used, and of course, as shown in fig. 1 and 2, a three-way cutoff valve may be used, and 3 ports of the pressure-increasing cutoff valve 105 may be blocked, in which case, when it is necessary to flow the inert gas into the pressurizing device 102 or discharge the inert gas from the pressurizing device 102 through the pressure-increasing line 107 (i.e., the above-described steps (1) and (4)), it suffices to control 1 port and 2 ports of the pressure-increasing cutoff valve 105 to be connected, and similarly, when it is necessary to cut off the pressure-increasing line 107 (i.e., the above-described step (2)), it suffices to control 2 ports and 3 ports of the pressure-increasing cutoff valve 105 to be connected.
In addition, as for the pressure-increase permission cut-off valve 104, the pressure-increase cut-off valve 105, and the pressure valve 106, electrically controlled cut-off valves may be employed, but in view of safety and cost performance, it is preferable that, as shown in fig. 1, all of the pressure-increase permission cut-off valve 104, the pressure-increase cut-off valve 105, and the pressure valve 106 may be pneumatically controlled cut-off valves, and the caliber of the pressure valve 106 is smaller than those of the pressure-increase permission cut-off valve 104 and the pressure valve 105. For example, the pressure-increasing permission cutoff valve 104 and the pressure-increasing cutoff valve 105 may be cutoff valves of the type TPC2312-20 manufactured by ROCKY company, and the pressure-increasing valves 106 may be cutoff valves of the type TPC2312-15 manufactured by ROCKY company. In this case, the pressure increase permission cut-off valve 104, the pressure increase cut-off valve 105, and the pressure increasing valve 106 are respectively communicated with the control gas source 201 through the corresponding solenoid valves (SV1-SV3), so that the cutting off of the pressure increase permission cut-off valve 104, the pressure increase cut-off valve 105, and the pressure increasing valve 106 is controlled through the corresponding solenoid valves (SV1-SV 3).
In the case where the pressurizing valve 106 is a pneumatically controlled shut-off valve (as shown in fig. 1), in the above-described step (3), the inert gas is supplied into the pressurizing device 2 by controlling the on or off of the pressurizing valve 106 in accordance with the sensed pressure value in the pressurizing device 2.
In a preferred embodiment, as shown in fig. 2, the pressurization valve 106 may be a pneumatically controlled regulator valve, such as a membrane regulator valve available from ROCKY corporation as model number DC1212-15(CV 1). In this case, the pressurizing valve 106 communicates with the control gas source 201 through the IP valve 109. As the IP valve, for example, an IP valve of the SMC company, model number ITV2030-0CS2, can be used.
In the case where the pressurizing valve 106 is a pneumatically controlled regulating valve, in the step (3) described above, the PLC controller outputs a corresponding control signal to the IP valve by receiving the pressure value in the pressurizing device 2 sensed by the pressure sensor, thereby supplementing the leakage pressure into the pressurizing device 2 by controlling the opening degree of the pressurizing valve 106.
Further, in order to prevent the back flow of the inert gas, a check valve 110 may be provided between the inert gas source 101 and the pressure-increasing permission cutoff valve 104.
In addition, a relief valve (1AF)111 may be provided on the rear end lines of the pressure-increasing line 107 and the pressure-increasing line 108, so that the relief valve 111 can open the exhaust when the pressure in the pressure device 2 is excessively high.
Alternative embodiment 1
Referring to fig. 3, an alternative embodiment of an inert gas applied tonnage control apparatus according to the present invention is shown.
As shown in fig. 3, the inert gas applied clamping force control apparatus according to the present invention includes: an inert gas source 101 for providing an inert gas at a desired pressure; a pressing device 102 for applying a mold clamping force when the tire is vulcanized; a pressure sensor 103 for sensing the pressure inside the pressurizing means 102; a pressure increase permission cutoff valve 104 provided on a pipeline between the inert gas source 101 and the pressurizing device 102; a pressure increase cutoff valve 105 provided on a pressure increase line 107 between the pressure increase permission cutoff valve 104 and the pressure device 102; a pressurizing valve 106 provided on a pressurizing line 108 between the pressure-increase-permitting cutoff valve 104 and the pressurizing device 102, the pressurizing valve 106 being used to adjust the pressure of the pressurizing device 102; and a pressure release shut-off valve 112 provided on a pressure release line 113 between the pressurizing device 102 and the inert gas recovery apparatus.
Obviously, it is understood that, as for the pressure increase permission cut-off valve 104, the pressure increase cut-off valve 105, the pressure valve 106 and the pressure release cut-off valve 112, a one-in one-out two-way pneumatic cut-off valve may be adopted, and the pressure increase permission cut-off valve 104, the pressure increase cut-off valve 105, the pressure valve 106 and the pressure release cut-off valve 112 are respectively communicated with the control air source 201 through corresponding solenoid valves. In addition, as for the pressurizing valve 106, it is also preferable to employ a pneumatic regulating valve as described above, in which case the pressurizing valve 106 communicates with the control gas source 201 through an IP valve.
In addition, the relief valve 111 as described above may also be provided on the lines at the rear ends of the pressure-increasing line 107 and the pressure-increasing line 108, so that the relief valve 111 opens the exhaust gas when the pressure in the pressure device 2 is excessively high
In this alternative embodiment 1, the control method of the inert gas applied clamping force control device is as follows:
(1) after the clamping lock of the vulcanizer is in place, the pressurization-allowing cutoff valve 104 is controlled to be turned on while the pressurization cutoff valve 105 is turned on, so that the inert gas is turned on by the pressurization-allowing cutoff valve 104 while the pressurization cutoff valve 105 flows into the pressurizing device 102;
(2) collecting the pressure value of the pressurizing device 102 through a pressure sensor 103, and controlling the pressurization shut-off valve 105 to be disconnected when the pressure value reaches a switching set value;
(3) supplementing the pressure device 102 with the leakage pressure via the pressure line 108 by controlling the pressure valve 106 according to the pressure value of the pressure device 102, thereby keeping the pressure inside the pressure device 102 stable;
(4) after the vulcanization of the vulcanizer is completed, the pressurization valve 106 and the pressurization-permitting cutoff valve 104 are controlled to be turned off, and the pressure-release cutoff valve 112 is controlled to be turned on, so that the inert gas of the pressurization device 102 is discharged to the inert gas recovery apparatus through the pressure-release cutoff valve 112.
When the pressure in the pressurizing device 2 is lower than a set value allowing unlocking and mold opening, the vulcanizing machine can unlock and mold the mold.
Alternative embodiment 2
Referring to FIG. 4, another alternate embodiment of an inert gas applied tonnage control apparatus according to the present invention is shown.
As shown in fig. 4, the inert gas applied clamping force control apparatus according to the present invention includes: an inert gas source 101 for providing an inert gas at a desired pressure; a pressurizing device 102 for applying a mold clamping force to the tire vulcanizer; a pressure sensor 103 for sensing the pressure inside the pressurizing means 102; a pressure increase permission cutoff valve 104 provided on a pipeline between the inert gas source 101 and the pressurizing device 102; a pressure-increasing valve 106, the pressure-increasing valve 106 being a regulating valve provided on a line between the pressure-increase-permitting cutoff valve 104 and the pressure-increasing device 102; and a pressure release shut-off valve 112 provided on a pressure release line 113 between the pressurizing device 102 and the inert gas recovery apparatus.
Obviously, it will be appreciated that with respect to the pressure increase permitting shut-off valve 104 and the pressure relief shut-off valve 112, an in-out two-way pneumatic shut-off valve may also be employed. In this case, the pressure increase permission cut-off valve 104 and the pressure release cut-off valve 112 are respectively communicated with the control air source 201 through corresponding solenoid valves.
As for the regulator valve 106, it may be a pneumatically controlled regulator valve as described above, in which case the regulator valve 106 communicates with a control gas source through an IP valve 109.
In this alternative embodiment 2, the control method of the inert gas applied clamping force control device is as follows:
(1) after the clamping lock of the vulcanizer is in place, controlling the pressurization-permitting cutoff valve 104 to be on while adjusting the opening degree of the regulating valve 106 to the maximum, so that the inert gas flows into the pressurizing device 102 through the pressurization-permitting cutoff valve 104 and the regulating valve 106;
(2) collecting the pressure value of the pressurizing device 102 through a pressure sensor 103, and controlling the regulating valve 106 to be switched off when the pressure value reaches a switching set value;
(3) controlling the opening size of the regulating valve 106 according to the pressure value of the pressurizing device 102 to supplement the leakage pressure to the pressurizing device 102, so as to keep the pressure in the pressurizing device 102 stable;
(4) after the vulcanization of the vulcanizer is completed, the control valve 106 and the pressure increase permission cutoff valve 104 are turned off, and the pressure release cutoff valve 112 is turned on, so that the inert gas of the pressurization device 102 is discharged to the inert gas recovery apparatus through the pressure release cutoff valve 112.
According to the inert gas applied clamping force control apparatus of the above embodiment of the present invention, there are advantages in that: the inert gas has stable physical and chemical properties and small expansion coefficient under the influence of temperature; no matter what kind of reason causes the pressure drop of the pressure maintaining loop, the pressurizing valve or the regulating valve can supplement the leakage pressure and keep the loop pressure constant; the device is driven by inert gas, and has no electric arc and spark, so that the safety is high; the inert gas is more convenient to obtain and can be recycled; when the pressure in the pressurizing device is overhigh, the safety valve (1AF) opens to exhaust gas, so that the safety is high; the operation on the vulcanizing machine can be more reliable, the risk of hydraulic oil leakage is reduced, and the installation, debugging and maintenance are more concise.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. An inert gas applied clamping force control apparatus for a tire vulcanizer, comprising:
the inert gas source is used for providing inert gas with required pressure;
a pressurizing device for applying a mold clamping force during tire vulcanization;
a pressure sensor for sensing a pressure within the pressurizing device;
the pressurization-allowing shut-off valve is arranged on a pipeline between an inert gas source and the pressurizing device, the pressurization-allowing shut-off valve is a three-way shut-off valve, a first interface of the pressurization-allowing shut-off valve is used for being communicated with the inert gas source, a second interface of the pressurization-allowing shut-off valve is used for being communicated with the pressurizing device, and a third interface of the pressurization-allowing shut-off valve is used for being communicated with an inert gas recovery device;
a pressure increase cut-off valve arranged on a pressure increase pipeline between the pressure increase cut-off valve and the pressure device;
and a pressurizing valve provided on a pressurizing line between the pressure-increasing-permission cutoff valve and the pressurizing device, the pressurizing valve being used for adjusting the pressure of the pressurizing device.
2. The inert gas applied mold clamping force control device according to claim 1, wherein the pressure increase permission cut-off valve, the pressure increase cut-off valve and the pressure valve are pneumatically controlled cut-off valves, and wherein the apertures of the pressure valves are smaller than the apertures of the pressure increase permission cut-off valve and the pressure increase cut-off valve, the pressure increase permission cut-off valve, the pressure increase cut-off valve and the pressure valve being respectively communicated with a control gas source through respective solenoid valves.
3. The inert gas applied mold clamping force control device according to claim 1, wherein the pressure increase permission cut-off valve and the pressure increase cut-off valve are pneumatically controlled cut-off valves, the pressure valves are pneumatically controlled regulating valves, the pressure increase permission cut-off valve and the pressure increase cut-off valve are respectively communicated with a control gas source through corresponding solenoid valves, and the pressure valves are communicated with the control gas source through IP valves.
4. The inert gas applied mold clamping force control device according to any one of claims 1 to 3, wherein a check valve is further provided between the inert gas source and the pressure increase permission cutoff valve.
5. The inert gas applied mold clamping force control device according to claim 4, wherein a relief valve is further provided on the pressurizing line and a rear end pipe of the pressurizing line.
6. An inert gas applied clamping force control method for the inert gas applied clamping force control apparatus according to any one of claims 1 to 5, characterized by comprising:
after the clamping and locking of the vulcanizing machine are in place, controlling the first interface and the second interface of the pressurization-allowable stop valve to be communicated and simultaneously enabling the pressurization-allowable stop valve to be communicated so that inert gas flows into the pressurizing device through the pressurization-allowable stop valve and the pressurization-allowable stop valve;
the pressure sensor is used for acquiring the pressure value of the pressurizing device, and when the pressure value reaches a switching set value, the pressure-increasing cut-off valve is controlled to be disconnected;
supplementing leakage pressure to the pressurizing device through the pressurizing pipeline by controlling the pressurizing valve according to the pressure value of the pressurizing device, so as to keep the pressure in the pressurizing device stable;
after the vulcanization of the vulcanizing machine is finished, the pressurization valve is controlled to be switched off, the second interface and the third interface of the pressurization allowing cut-off valve are controlled to be switched on, and the pressurization cut-off valve is controlled to be switched on at the same time, so that the inert gas of the pressurization device is discharged into the inert gas recovery device through the pressurization cut-off valve and the pressurization allowing cut-off valve.
7. An inert gas applied clamping force control apparatus for a tire vulcanizer, comprising:
the inert gas source is used for providing inert gas with required pressure;
a pressurizing device for applying a mold clamping force during tire vulcanization;
a pressure sensor for sensing a pressure within the pressurizing device;
a pressure-increasing-permitting shut-off valve provided on a pipeline between the inert gas source and the pressurizing device;
a pressure increase cut-off valve arranged on a pressure increase pipeline between the pressure increase cut-off valve and the pressure device;
a pressurizing valve provided on a pressurizing line between the pressure-increase-permitting cutoff valve and the pressurizing means, the pressurizing valve being for adjusting a pressure of the pressurizing means;
and the pressure relief cut-off valve is arranged on a pressure relief pipeline between the pressurizing device and the inert gas recovery device.
8. An inert gas applied clamping force control method for the inert gas applied clamping force control apparatus according to claim 7, characterized by comprising:
after the clamping and locking of the vulcanizing machine are in place, controlling the pressurization allowing cut-off valve to be switched on and simultaneously switching on the pressurization cut-off valve so as to enable inert gas to flow into the pressurizing device through the pressurization allowing cut-off valve and the pressurization cut-off valve;
the pressure sensor is used for acquiring the pressure value of the pressurizing device, and when the pressure value reaches a switching set value, the pressure-increasing cut-off valve is controlled to be disconnected;
supplementing a leakage pressure to the pressurizing device via the pressurizing pipe by controlling the pressurizing valve according to a pressure value of the pressurizing device, thereby keeping the pressure in the pressurizing device stable;
after the vulcanizing of the vulcanizing machine is finished, the pressurizing valve and the pressurization allowing cut-off valve are controlled to be disconnected, and the pressure relief cut-off valve is controlled to be switched on, so that the inert gas of the pressurizing device is discharged into the inert gas recovery device through the pressure relief cut-off valve.
9. An inert gas applied clamping force control apparatus for a tire vulcanizer, comprising:
the inert gas source is used for providing inert gas with required pressure;
a pressurizing device for applying a mold clamping force during tire vulcanization;
a pressure sensor for sensing a pressure within the pressurizing device;
the pressurization allowing cut-off valve is arranged on a pipeline between the inert gas source and the pressurization device;
a regulating valve provided on a pipeline between the pressure increase permission cutoff valve and the pressurizing device;
and the pressure relief cut-off valve is arranged on a pressure relief pipeline between the pressurizing device and the inert gas recovery device.
10. An inert gas applied clamping force control method for the inert gas applied clamping force control apparatus according to claim 9, characterized by comprising:
after the mold closing of the vulcanizing machine is locked in place, controlling the pressurization allowing cut-off valve to be switched on and simultaneously adjusting the opening degree of the regulating valve to be maximum so as to enable inert gas to flow into the pressurizing device through the pressurization allowing cut-off valve and the regulating valve;
collecting a pressure value of the pressurizing device through the pressure sensor, and controlling the regulating valve to be disconnected when the pressure value reaches a switching set value;
controlling the opening size of the regulating valve according to the pressure value of the pressurizing device to supplement leakage pressure to the pressurizing device so as to keep the pressure in the pressurizing device stable;
after the vulcanizing of the vulcanizing machine is finished, the regulating valve and the pressurization allowing cut-off valve are controlled to be disconnected, and the pressure relief cut-off valve is controlled to be switched on, so that the inert gas of the pressurizing device is discharged into the inert gas recovery device through the pressure relief cut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030178.2A CN114248479A (en) | 2020-09-25 | 2020-09-25 | Inert gas applied mold clamping force control device for tire vulcanizer and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030178.2A CN114248479A (en) | 2020-09-25 | 2020-09-25 | Inert gas applied mold clamping force control device for tire vulcanizer and control method thereof |
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| Publication Number | Publication Date |
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| CN114248479A true CN114248479A (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011030178.2A Pending CN114248479A (en) | 2020-09-25 | 2020-09-25 | Inert gas applied mold clamping force control device for tire vulcanizer and control method thereof |
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| Country | Link |
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| CN (1) | CN114248479A (en) |
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2020
- 2020-09-25 CN CN202011030178.2A patent/CN114248479A/en active Pending
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Address after: 224500 No.123, Century Avenue, North Industrial Park, Binhai Economic Development Zone, Yancheng City, Jiangsu Province Applicant after: Huaao Equipment Technology (Yancheng) Co.,Ltd. Address before: 224500 No.123, Century Avenue, North Industrial Park, Binhai Economic Development Zone, Yancheng City, Jiangsu Province Applicant before: JIANGSU HUAAO RUBBER MACHINERY Co.,Ltd. |