CN212949312U - Novel hydraulic pressurizing system of all-steel hydraulic vulcanizing machine - Google Patents
Novel hydraulic pressurizing system of all-steel hydraulic vulcanizing machine Download PDFInfo
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Abstract
The utility model relates to a novel hydraulic pressurizing system of an all-steel hydraulic vulcanizing machine, which mainly comprises a pressure supplementing hydraulic system valve group, a high-pressure hydraulic system valve group and a low-pressure hydraulic system valve group, wherein the pressure supplementing hydraulic system valve group is provided with one set and mainly comprises a manual switch valve, a filter, a pressure reducing valve, a safety valve, a reversing valve and a pneumatic booster pump; the two groups of low-pressure hydraulic system valve banks can meet the requirement that a left mode and a right mode work independently or simultaneously, and mainly comprise an electromagnetic reversing valve, a hydraulic control one-way valve, a pressure reducing valve, an oil cylinder throttle valve, a pressure sensor and a stress application oil cylinder, the two groups of high-pressure hydraulic system valve banks can meet the requirement that the left mode and the right mode work independently or simultaneously, and mainly comprise the electromagnetic reversing valve, the hydraulic control one-way valve, the one-way throttle valve and a hydraulic booster, and a high-pressure pressurization stage is adopted, so that a high-pressure gear pump set is omitted, the energy consumption of a frequent starting motor is saved, pneumatic pressurization is adopted, the oil pollution environment is reduced.
Description
Technical Field
The utility model belongs to compound die force control field in the work of all-steel hydraulic vulcanizer especially relates to novel all-steel hydraulic vulcanizer hydraulic pressure pressurization system.
Background
The all-steel hydraulic vulcanizing machine pressurizes the die through 4 stressing oil cylinders to generate a mold clamping force required by vulcanization.
The hydraulic oil of the stressing oil cylinder is respectively provided by a medium-pressure plunger pump set and a high-pressure gear pump set, the pressure of the hydraulic oil is detected by a pressure sensor, and the magnitude of the oil pressure is controlled by a pressure set value of a touch screen, so that the output oil pressure reaches the oil pressure required by the preset mold clamping force. The oil cylinder applies the mold clamping force to the mold and is divided into two stages, namely a low-pressure stage and a high-pressure stage. In the low-pressure stage, the medium-pressure plunger pump set provides pressure for the oil cylinder, and at the moment, the oil cylinder is quickly filled with hydraulic oil. And starting the high-pressure gear pump set after the pressure in the oil cylinder reaches a set value, wherein the pressure oil required by the oil cylinder is provided by the high-pressure gear pump set, and the high-pressure gear pump set starts to work until the pressure required by the oil cylinder is reached. In the vulcanization process, pressure loss occurs, when the pressure is lower than a set value, the pressure sensor detects and feeds back, the high-pressure gear pump set is started again, pressure is supplemented for the oil cylinder, and the oil pressure required by the mold clamping force is achieved again.
The hydraulic pressurization system of the novel all-steel hydraulic vulcanizing machine has the following disadvantages:
1. the pressurizing is inaccurate, the phenomenon of pressure overshoot or insufficiency is easy to occur, the mold clamping force is unstable, and the quality of a vulcanized tire and the service life and the precision of a segmented mold are influenced;
2. in the vulcanization process, a high-pressure gear pump set needs to be started repeatedly, the energy consumption is high, the pressure supplementing flow and the pressure are fixed and uncontrollable, and the pressure is easy to process or insufficient;
3. in the primary stage of vulcanization of closing the mold and applying force to steam, nitrogen and the like, the phenomenon of mold closing force increase occurs under the action of a vulcanization medium in the capsule, and the pressure stability cannot be realized;
4. the speed of the stressing oil cylinder can not be adjusted, and the operating speeds of the four stressing oil cylinders are inconsistent, so that the stressing device has an operating jam phenomenon;
5. the cost is high, and the maintenance is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to foretell technical problem, can reduce fluid polluted environment, environmental protection more, afterburning precision improves 4 times, is reduced to 50KN by 200KN, and cost of maintenance has reduced 30%, operates more steadily, smoothly.
In order to achieve the above object, the utility model discloses a technical scheme be:
the novel hydraulic pressurization system of the all-steel hydraulic vulcanizing machine comprises a pressure supplementing hydraulic system group, a low-pressure hydraulic system valve group and a high-pressure hydraulic system group;
the pressure supplementing hydraulic system set is connected with a load sensitive pump set and comprises a manual switch valve for controlling compressed air to enter, a filter for filtering the compressed air is arranged on a pipeline of the pressure supplementing hydraulic system set, the filtered compressed air sequentially passes through a pressure reducing valve, a safety valve and a reversing valve and enters a pneumatic booster pump, the reversing of the compressed air entering the pneumatic booster pump is realized through the reversing of the reversing valve, the pneumatic booster pump is pushed to move back and forth, the pneumatic booster pump can absorb hydraulic oil from an oil tank of the load sensitive pump set, and the absorbed hydraulic oil is compressed out through an oil inlet pipeline HP004 and enters a first force application oil cylinder and a second force application oil cylinder;
the low-pressure hydraulic system valve bank comprises two groups of a first low-pressure hydraulic system valve bank and a second low-pressure hydraulic system valve bank, the load-sensitive pump group is connected with an oil inlet pipeline HP003 of the first low-pressure hydraulic system valve bank, the oil inlet pipeline HP003 is connected with a first stressing oil cylinder through a first electromagnetic reversing valve, a first hydraulic control one-way valve, a first pressure reducing valve and a first oil cylinder throttle valve on the first low-pressure hydraulic system valve bank, and an oil path of the first stressing oil cylinder is connected with an oil outlet pipeline LP003 on the first low-pressure hydraulic system valve bank; the load-sensitive pump group is connected with an oil inlet pipeline HP002 of the second low-pressure hydraulic system valve group, the oil inlet pipeline HP002 is connected with a second stressing oil cylinder through a second electromagnetic reversing valve, a second hydraulic control one-way valve, a second pressure reducing valve and a second oil cylinder throttle valve on the second low-pressure hydraulic system valve group, and an oil way of the second stressing oil cylinder is connected with an oil outlet pipeline LP002 on the second low-pressure hydraulic system valve group;
the high-pressure hydraulic system group comprises a first high-pressure hydraulic system group and a second high-pressure hydraulic system group, the first high-pressure hydraulic system group and the second high-pressure hydraulic system group are respectively connected with a hydraulic booster, a load-sensitive pump group is connected with an oil inlet pipeline HP003 of the hydraulic booster, the first high-pressure hydraulic system group comprises a third electromagnetic directional valve, a third hydraulic control one-way valve and a third one-way throttle valve, and pressure oil sequentially enters the third electromagnetic directional valve, the third hydraulic control one-way valve and the third one-way throttle valve through the hydraulic booster and then is connected to the first force application oil cylinder; the second high-pressure hydraulic system group comprises a fourth electromagnetic directional valve, a fourth hydraulic control one-way valve and a fourth one-way throttle valve, and pressure oil passes through the hydraulic booster and then sequentially passes through the fourth electromagnetic directional valve, the fourth hydraulic control one-way valve and the fourth one-way throttle valve and then is connected to the second force application oil cylinder.
Preferably, the first force application oil cylinder is connected with a first pressure sensor, the first pressure sensor is used for monitoring the pressure of the first force application oil cylinder, the second force application oil cylinder is connected with a second pressure sensor, and the second pressure sensor is used for monitoring the pressure of the second force application oil cylinder.
Preferably, the first boosting oil cylinder is connected with a first overflow oil tank through a first adjustable throttle valve and a first electromagnetic ball valve.
Preferably, the second boosting oil cylinder is connected with a second overflow oil tank through a second adjustable throttle valve and a second electromagnetic ball valve.
Preferably, a hydraulic element check valve and an electromagnetic ball valve are arranged between the oil inlet pipeline HP004 and the hydraulic booster.
Preferably, the front ends of the first force application oil cylinder and the second force application oil cylinder are respectively connected with an oil cylinder throttle valve.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
1. the utility model provides a novel all-steel hydraulic vulcanizer hydraulic pressure system, high-pressure pressurization stage, saved high-pressure gear pump group, saved the power consumption of frequent starter motor, novel all-steel hydraulic vulcanizer hydraulic pressure system energy consumption reduces by 10%, adopts pneumatic pressure boost, has reduced fluid polluted environment, and is more environmental-friendly, and the afterburning precision improves by 4 times, reduces to +/-50 KN from +/-200 KN, and the cost of maintenance reduces by 30%, and the operation is more steady, smooth and easy;
2. when the pressures of the first force application oil cylinder and the second force application oil cylinder are overlarge, the first pressure sensor and the second pressure sensor transmit the monitored pressure values to the PLC, the PLC controls a valve group pipeline of the low-pressure hydraulic system and a high-pressure hydraulic system group pipeline to stop working, and the first force application oil cylinder and the second force application oil cylinder are stopped being pressurized;
3. the first low-pressure hydraulic system valve bank, the second low-pressure hydraulic system valve bank, the first high-pressure hydraulic system group and the second high-pressure hydraulic system group can work independently and provide oil pressure power for the first force application oil cylinder and the second force application oil cylinder independently;
4. after the vulcanizing machine is used for closing the mold and applying force, vulcanizing media such as steam, nitrogen and the like are introduced into the capsule, the internal pressure rises at the moment, a downward force is generated, the internal pressure of the force application cylinder slightly rises, the pressure sensor detects the pressure, the electromagnetic ball valve is inching and opened under the control of the PLC controller at the moment, a part of pressure is released, and the mold closing force returns to a set value. In the vulcanization process, when the pressure of the stressing oil cylinder is lost and is lower than a set technological value, the pressure sensor detects and feeds back, the pressure supplementing hydraulic system valve bank is started again, pressure is supplemented for the oil cylinder, and the oil pressure required by the mold clamping force is achieved again. After the tire is vulcanized and before the vulcanizing machine is opened, partial pressure in the boosting oil cylinder needs to be relieved firstly. At the moment, a part of pressure of the boosting oil cylinder is released through the electromagnetic ball valve, after the set value of an interface is reached, the main loop is switched through electric control, and then all pressure is released through the main loop, so that stable pressure relief is realized, and the boosting system cannot generate impact. Meanwhile, the problem of blockage caused by unsmooth pressure relief is avoided, and the die sinking and pressure relief are smooth.
Drawings
Fig. 1 is a schematic structural diagram of the pressure compensating hydraulic system set of the present invention;
fig. 2 is a schematic structural diagram of the low-pressure hydraulic system valve group and the high-pressure hydraulic system group of the present invention;
in the above figures: 1-1 manual control switch valve, 1-2 filter, 1-3 pressure reducing valve, 1-4 safety valve, 1-5 reversing valve, 1-6 pneumatic booster pump, 1 first electromagnetic reversing valve, 2 first hydraulic control one-way valve, 3 first pressure reducing valve, 4 first oil cylinder throttle valve, 5 third electromagnetic reversing valve, 6 third hydraulic control one-way valve, 7 third one-way throttle valve, 8 first pressure sensor, 9 first adjustable throttle valve, 10 first electromagnetic ball valve, 11 hydraulic element one-way valve, 12 electromagnetic ball valve, 13 second adjustable throttle valve, 14 second electromagnetic ball valve, 15 second electromagnetic reversing valve, 16 second hydraulic control one-way valve, 17 second pressure reducing valve, 18 second oil cylinder throttle valve, 19 fourth electromagnetic reversing valve, 20 fourth hydraulic control one-way valve, 21 fourth one-way throttle valve, 22 second pressure sensor, 27 hydraulic booster, 28 load-sensitive pump group and 29 cylinder throttle valve.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-2, the hydraulic pressurization system of the novel all-steel hydraulic vulcanizer comprises a pressure-supplementing hydraulic system group, a low-pressure hydraulic system valve group and a high-pressure hydraulic system group;
the pressure supplementing hydraulic system group is connected with a load sensitive pump group 28, the pressure supplementing hydraulic system group comprises a manual switch valve 1-1 for controlling the entering of compressed air, a pipeline of the pressure supplementing hydraulic system group is provided with a filter 1-2 for filtering the compressed air, the filtered compressed air sequentially passes through a pressure reducing valve 1-3, a safety valve 1-4 and a reversing valve 1-5 and enters a pneumatic booster pump 1-6, the reversing of the compressed air entering the pneumatic booster pump 1-6 is realized through the reversing of the reversing valve 1-5, the pneumatic booster pump 1-6 is pushed to move back and forth, the pneumatic booster pump 1-6 can suck hydraulic oil from an oil tank of the load sensitive pump set 28, and the sucked hydraulic oil compresses the pressure oil out through an oil inlet pipeline HP004 and enters the first force-adding oil cylinder 23 and the second force-adding oil cylinder 24;
the low-pressure hydraulic system valve bank comprises two groups of a first low-pressure hydraulic system valve bank and a second low-pressure hydraulic system valve bank, the load-sensitive pump group 28 is connected with an oil inlet pipeline HP003 of the first low-pressure hydraulic system valve bank, the oil inlet pipeline HP003 is connected with a first boosting oil cylinder through a first electromagnetic reversing valve 1, a first hydraulic control one-way valve 2, a first pressure reducing valve 3 and a first oil cylinder throttle valve 4 on the first low-pressure hydraulic system valve bank, and an oil circuit of the first boosting oil cylinder is connected with an oil outlet pipeline LP003 on the first low-pressure hydraulic system valve bank; the load-sensitive pump group 28 is connected with an oil inlet pipeline HP002 of the second low-pressure hydraulic system valve group, the oil inlet pipeline HP002 is connected with the second stressing oil cylinder 24 through a second electromagnetic directional valve 15, a second hydraulic control one-way valve 16, a second pressure reducing valve 17 and a second oil cylinder throttle valve 18 on the second low-pressure hydraulic system valve group, and the oil way of the second stressing oil cylinder 24 is connected with an oil outlet pipeline LP002 on the second low-pressure hydraulic system valve group;
the high-pressure hydraulic system group comprises a first high-pressure hydraulic system group and a second high-pressure hydraulic system group, the first high-pressure hydraulic system group and the second high-pressure hydraulic system group are respectively connected with a hydraulic booster 27, a load-sensitive pump group 28 is connected with an oil inlet pipeline HP003 of the hydraulic booster 27, the first high-pressure hydraulic system group comprises a third electromagnetic directional valve 5, a third hydraulic control one-way valve 6 and a third one-way throttle valve 7, and pressure oil sequentially enters the third electromagnetic directional valve 5, the third hydraulic control one-way valve 6 and the third one-way throttle valve 7 through the hydraulic booster 27 and then is connected to a first force application oil cylinder; the second high-pressure hydraulic system group comprises a fourth electromagnetic directional valve 19, a fourth hydraulic control one-way valve 20 and a fourth one-way throttle valve 21, pressure oil passes through a hydraulic booster 27 and then is connected to the second boosting oil cylinder after passing through the fourth electromagnetic directional valve 19, the fourth hydraulic control one-way valve 20 and the fourth one-way throttle valve 21 in sequence, a high-pressure gear pump group is omitted in the pressurization stage of the high-pressure hydraulic system group, and energy consumption of a motor which is frequently started is reduced through the hydraulic booster 27.
Further, a first pressure sensor 8 is connected to the first force application oil cylinder 23, the first pressure sensor 8 is used for monitoring the pressure of the first force application oil cylinder 23, the first pressure sensor 8 is connected with a PLC (programmable logic controller), when the pressure of the first force application oil cylinder 23 is too large, the first pressure sensor 8 transmits the monitored pressure value to the PLC, and the PLC controls a low-pressure hydraulic system valve group pipeline and a high-pressure hydraulic system group pipeline to stop working and stop pressurizing the first force application oil cylinder 23; the second force application oil cylinder 24 is connected with the second pressure sensor 22, the second pressure sensor 22 is used for monitoring the pressure of the second force application oil cylinder, the second pressure sensor 22 is connected with the PLC, when the pressure of the second force application oil cylinder 24 is too large, the second pressure sensor 22 transmits the monitored pressure value to the PLC, and the PLC controls the low-pressure hydraulic system valve group pipeline and the high-pressure hydraulic system group pipeline to stop working and stop pressurizing the second force application oil cylinder 24.
Further, the first force application oil cylinder 23 is connected with a first overflow oil tank 25 through a first adjustable throttle valve 9 and a first electromagnetic ball valve 10, in the vulcanization process, pressure is released to the first force application oil cylinder 23, after the vulcanizing machine is closed and applies force, vulcanization media such as steam and nitrogen are introduced into the capsule, at the moment, the internal pressure rises to generate downward force, so that the internal pressure of the force application oil cylinder slightly rises, a pressure sensor detects the pressure, and the mold damage is caused when the mold closing force of the media is increased to exceed a set pressure range; after vulcanization is finished, pressure release of the first stressing oil cylinder 23 cannot be realized in the existing equipment, the pressure cannot be recovered to normal pressure, the technological requirement cannot be met, and the mould cannot be opened, so that the pressure release of the first stressing oil cylinder 23 after operation can be finished through the first adjustable throttle valve 9 and the first electromagnetic ball valve 10, and the construction technology is finished.
Further, the second force application oil cylinder 24 is connected with a second overflow oil tank 26 through a second adjustable throttle valve 13 and a second electromagnetic ball valve 14, in the vulcanization process, pressure is released to the first force application oil cylinder 24, the mold clamping force of a medium is increased to exceed a set pressure range, so that the damage to the mold is caused, the pressure of the second force application oil cylinder 24 can be reduced through the installation of the second adjustable throttle valve 13 and the second electromagnetic ball valve 14, and the damage to the mold caused by the overlarge pressure of the second force application oil cylinder 24 is prevented; after vulcanization is completed, pressure release of the second stressing oil cylinder 24 cannot be realized in the existing equipment, pressure cannot be recovered to normal pressure, and mold opening cannot be realized due to the fact that technological requirements cannot be met, so that the second stressing oil cylinder 24 can complete construction technology to release part of pressure of the stressing oil cylinder through the second adjustable throttle valve 13 and the second electromagnetic ball valve 14, after an interface set value is reached, the second stressing oil cylinder is switched to a main loop through electrical control, all pressure is released through the main loop, stable pressure release is realized, impact of a stressing system cannot be caused, meanwhile, the problem of blocking of unsmooth pressure release is avoided, and mold opening pressure release is smooth.
Further, a hydraulic element check valve 11 and an electromagnetic ball valve 12 are arranged between an oil inlet pipeline HP004 and the hydraulic booster 27, when pressure is supplemented, the safety valves 1-4 and the electromagnetic ball valve 12 are electrified, the pneumatic booster pump works, pressure oil enters the boosting cylinder through the HP004 to supplement pressure, the pressure of the boosting cylinder is ensured to meet the technological requirements, and the oil pressure required by mold clamping force is achieved again.
Further, the front ends of the first force application oil cylinder 23 and the second force application oil cylinder 24 are respectively connected with an oil cylinder throttle valve 29, and the oil cylinder throttle valve 29 controls the flow of fluid and plays a role in protecting the first force application oil cylinder 23 and the second force application oil cylinder 24.
The working principle is as follows:
the novel hydraulic pressurizing system of the all-steel hydraulic vulcanizing machine pressurizes a mould through 4 stressing oil cylinders to generate a mold closing force required by vulcanization. The hydraulic oil of the stressing oil cylinder is provided by a load sensitive pump, the pressure of the hydraulic oil is detected by a pressure sensor, and the pressure value can be set through a touch screen, so that the output hydraulic oil reaches the oil pressure required by the preset mold clamping force. The oil cylinder applies the mold clamping force to the mold and is divided into three stages, namely a low-pressure stage, a high-pressure front stage and a high-pressure approach setting stage. At the low-pressure stage, the novel hydraulic pressurization system of the all-steel hydraulic vulcanizing machine starts a low-pressure hydraulic valve bank, at the moment, oil enters the stressing oil cylinder through the HP002/HP003, the first electromagnetic directional valve 1, the second electromagnetic directional valve 15, the first hydraulic control one-way valve 2, the second hydraulic control one-way valve 16, the first pressure reducing valve 3, the second pressure reducing valve 18 and the throttle valve in sequence, and at the moment, hydraulic oil is filled in the oil cylinder rapidly. The first pressure sensor 8 and the second pressure sensor 22 feed back pressure signals to the PLC, after the pressure inside the oil cylinder reaches a set value of an electrical interface, the PLC judges according to a detection value, switches to a high-pressure pressurization program of a high-pressure previous stage, starts a high-pressure hydraulic system valve bank and a pressure-supplementing hydraulic system valve bank, and at the moment, oil provided by the load sensitive pump enters the stress application oil cylinder together through the high-pressure system valve bank and the pressure-supplementing hydraulic system valve bank. The high-pressure hydraulic system valve bank is pressurized by a hydraulic supercharger, and oil sequentially passes through a first electromagnetic directional valve 5, a second electromagnetic directional valve 19, a first hydraulic control one-way valve 6, a second hydraulic control one-way valve 20, a first one-way throttle valve 7, a second one-way throttle valve 21 and an oil cylinder throttle valve and enters a boosting oil cylinder; and the pressure compensating hydraulic system valve group share the same. Oil in the valve group of the pressure-supplementing hydraulic system is pressurized by a pneumatic booster pump 1-6, and enters the stressing oil cylinder through an HP004 oil pipeline sequentially through an electromagnetic ball valve 12, a check valve 11 and an oil cylinder throttle valve. The high-pressure system valve bank and the pressure-supplementing hydraulic system valve bank share the oil liquid for rapid pressurization, when the set vulcanization pressure value is approached, the pressure-supplementing hydraulic system valve bank is cut off, the high-pressure approach setting stage is entered, and the pressurization is stabilized only through the high-pressure hydraulic system valve bank at the moment until the vulcanization pressure value set by the interface is reached.
The working principle of the valve group of the pressure supplementing hydraulic system is as follows: compressed air sequentially passes through a manual switch valve 1-1, a filter 1-2, a pressure reducing valve 1-3, a safety valve 1-4 and a reversing valve 1-5 and enters a pneumatic booster pump 1-6, the reversing of the compressed air entering the pneumatic booster pump 1-6 is realized through the reversing of the reversing valve 1-5, the pneumatic booster pump 1-6 is pushed to move back and forth, the pneumatic booster pump 1-6 can absorb oil from an oil tank, and then the compressed oil is compressed out through HP004 and enters a stress application oil cylinder, so that the purpose of boosting is realized.
After the vulcanizing machine is closed and stressed, vulcanizing media such as steam and nitrogen are introduced into the capsule, the internal pressure rises at the moment, a downward force is generated, the internal pressure of the stressing oil cylinder slightly rises, the pressure sensor detects the pressure, the first electromagnetic ball valve 10 and the second electromagnetic ball valve 13 are inching and opened under the control of the PLC at the moment, a part of the pressure is released, and the mold closing force returns to a set value.
In the vulcanization process, when the pressure of the stressing oil cylinder is lost and is lower than a set technological value, the pressure sensor detects and feeds back, the pressure supplementing hydraulic system valve bank is started again, pressure is supplemented for the oil cylinder, and the oil pressure required by the mold clamping force is achieved again.
After the tire is vulcanized and before the vulcanizing machine is opened, partial pressure in the first stressing oil cylinder 23 and the second stressing oil cylinder 24 needs to be relieved. At this time, a part of the pressure of the first force application oil cylinder 23 and the second force application oil cylinder 24 is released through the first electromagnetic ball valve 10 and the second electromagnetic ball valve 13. After the interface set value is reached, the main circuit is switched to through electrical control, all pressure is released through the main circuit, stable pressure release is achieved, impact of a stress application system cannot be caused, the problem of blocking of unsmooth pressure release is avoided, and die sinking and pressure release are smooth.
In the pressurizing stage of the high-pressure hydraulic system set, a high-pressure gear pump set is omitted, and energy consumption of a frequently started motor is saved through the hydraulic booster 27.
The two small-flow systems of the high-pressure hydraulic system group and the pressure-supplementing hydraulic system group are matched through interface setting and PLC control, and high-pressure rapid and stable pressurization is achieved together.
The pressure supplementing hydraulic system valve bank, the low-pressure hydraulic system valve bank and the high-pressure hydraulic system valve bank are sequentially matched to work to complete the stress application cycle of a vulcanization period.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. Novel all steel hydraulic pressure vulcanizer hydraulic pressure pressurization system, its characterized in that: the hydraulic system comprises a pressure supplementing hydraulic system group, a low-pressure hydraulic system valve group and a high-pressure hydraulic system group;
the pressure supplementing hydraulic system group is connected with a load sensitive pump group (28), the pressure supplementing hydraulic system group comprises a manual switch valve (1-1) for controlling compressed air to enter, a filter (1-2) for filtering compressed air is arranged on a pipeline of the pressure supplementing hydraulic system group, the filtered compressed air sequentially passes through a pressure reducing valve (1-3), a safety valve (1-4) and a reversing valve (1-5) and enters a pneumatic booster pump (1-6), the reversing of the compressed air entering the pneumatic booster pump (1-6) is realized through the reversing of the reversing valve (1-5), the pneumatic booster pump (1-6) is pushed to move back and forth, the pneumatic booster pump (1-6) can absorb hydraulic oil from an oil tank of the load sensitive pump group (28), the absorbed hydraulic oil is compressed through an oil inlet pipeline HP004, enters a first force application oil cylinder (23) and a second force application oil cylinder (24);
the low-pressure hydraulic system valve bank comprises two groups of a first low-pressure hydraulic system valve bank and a second low-pressure hydraulic system valve bank, a load-sensitive pump group (28) is connected with an oil inlet pipeline HP003 of the first low-pressure hydraulic system valve bank, the oil inlet pipeline HP003 is connected with a first boosting oil cylinder (23) through a first electromagnetic directional valve (1), a first hydraulic one-way valve (2), a first pressure reducing valve (3) and a first oil cylinder throttle valve (4) on the first low-pressure hydraulic system valve bank, and an oil way of the first boosting oil cylinder (23) is connected with an oil outlet pipeline LP003 on the first low-pressure hydraulic system valve bank; the load-sensitive pump group (28) is connected with an oil inlet pipeline HP002 of the second low-pressure hydraulic system valve group, the oil inlet pipeline HP002 is connected with a second boosting oil cylinder (24) through a second electromagnetic directional valve (15), a second hydraulic control one-way valve (16), a second pressure reducing valve (17) and a second oil cylinder throttle valve (18) on the second low-pressure hydraulic system valve group, and an oil path of the second boosting oil cylinder (24) is connected with an oil outlet pipeline LP002 on the second low-pressure hydraulic system valve group;
the high-pressure hydraulic system group comprises a first high-pressure hydraulic system group and a second high-pressure hydraulic system group, the first high-pressure hydraulic system group and the second high-pressure hydraulic system group are respectively connected with a hydraulic booster (27), a load-sensitive pump group (28) is connected with an oil inlet pipeline HP003 of the hydraulic booster (27), the first high-pressure hydraulic system group comprises a third electromagnetic directional valve (5), a third hydraulic control one-way valve (6) and a third one-way throttle valve (7), and pressure oil sequentially enters the third electromagnetic directional valve (5), the third hydraulic control one-way valve (6) and the third one-way throttle valve (7) through the hydraulic booster (27) and then is connected to a first force application oil cylinder (23); the second high-pressure hydraulic system group comprises a fourth electromagnetic directional valve (19), a fourth hydraulic control one-way valve (20) and a fourth one-way throttle valve (21), and pressure oil passes through a hydraulic booster (27) and then sequentially passes through the fourth electromagnetic directional valve (19), the fourth hydraulic control one-way valve (20) and the fourth one-way throttle valve (21) and then is connected to the second boosting oil cylinder (24).
2. The novel hydraulic pressurization system of all-steel hydraulic vulcanizing machine according to claim 1, characterized in that: the first stressing oil cylinder (23) is connected with a first pressure sensor (8), the first pressure sensor (8) is used for monitoring the pressure of the first stressing oil cylinder (23), the second stressing oil cylinder (24) is connected with a second pressure sensor (22), and the second pressure sensor (22) is used for monitoring the pressure of the second stressing oil cylinder (24).
3. The novel hydraulic pressurization system of all-steel hydraulic vulcanizing machine according to claim 1, characterized in that: the first boosting oil cylinder (23) is connected with a first overflow oil tank (25) through a first adjustable throttle valve (9) and a first electromagnetic ball valve (10).
4. The novel hydraulic pressurization system of all-steel hydraulic vulcanizing machine according to claim 1, characterized in that: the second boosting oil cylinder (24) is connected with a second overflow oil tank (26) through a second adjustable throttle valve (13) and a second electromagnetic ball valve (14).
5. The novel hydraulic pressurization system of all-steel hydraulic vulcanizing machine according to claim 1, characterized in that: a hydraulic element check valve (11) and an electromagnetic ball valve (12) are arranged between the oil inlet pipeline HP004 and the hydraulic booster (27).
6. The novel hydraulic pressurization system of all-steel hydraulic vulcanizing machine according to claim 1, characterized in that: the front ends of the first stressing oil cylinder (23) and the second stressing oil cylinder (24) are respectively connected with an oil cylinder throttle valve (29).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021081264.1U CN212949312U (en) | 2020-06-12 | 2020-06-12 | Novel hydraulic pressurizing system of all-steel hydraulic vulcanizing machine |
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| CN202021081264.1U CN212949312U (en) | 2020-06-12 | 2020-06-12 | Novel hydraulic pressurizing system of all-steel hydraulic vulcanizing machine |
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