CN220365785U - Laminator hydraulic pressure station lift pressurize system - Google Patents
Laminator hydraulic pressure station lift pressurize system Download PDFInfo
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- CN220365785U CN220365785U CN202321914506.4U CN202321914506U CN220365785U CN 220365785 U CN220365785 U CN 220365785U CN 202321914506 U CN202321914506 U CN 202321914506U CN 220365785 U CN220365785 U CN 220365785U
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- 238000010030 laminating Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a lifting pressure maintaining system of a laminator hydraulic station, which comprises an oil tank, a hydraulic cylinder, a low-pressure pump and a high-pressure pump; the output end of the low-pressure pump is connected with a low-pressure oil way, the low-pressure oil way comprises a first logic valve and a second logic valve, the valve cores of the first logic valve and the second logic valve are all spheres, and the second logic valve is provided with a cover plate with an adjusting rod; the output end of the high-pressure pump is connected with a high-pressure oil way, and the high-pressure oil way comprises a proportional servo valve and a third electromagnetic ball valve. According to the utility model, through the cooperation between the proportional servo valve and the third electromagnetic ball valve, the functions of micro pressure relief, slow die opening pressure relief, quick rise, slow rise and pressurization of the hot press are realized, the failure rate of the system is reduced, the number of control elements is reduced, the volume of an oil way block is effectively reduced, the space utilization efficiency is improved, the pressure precision of the system is controlled within +/-0.5 bar by the proportional servo valve, and the pressure precision and response speed of the system are improved; the valve core is a logic valve with a sphere, so that the valve opening pressure is very small, and the valve is suitable for light load working conditions.
Description
Technical Field
The utility model relates to a laminator technical field especially relates to a laminator hydraulic pressure station lift pressurize system.
Background
A laminator is a mechanical device that presses multiple layers of materials together, wherein a heated laminator is commonly used for lamination production of PBC boards.
The laminator realizes lifting pressure maintaining through a hydraulic driving system, and particularly, the laminator can be referred to as CN218598494U, and the name is a laminator hydraulic driving system. The hydraulic driving system of the laminating machine realizes micro pressure relief of the hot press through the cooperation between the fourth electromagnetic ball valve and the second speed regulating valve; the slow die opening pressure release of the hot press is realized through the cooperation between the third speed regulating valve and the fifth electromagnetic ball valve; the quick rise and the slow rise of the hot press are realized through the cooperation between the electromagnetic reversing valve and the second one-way valve; the pressurization of the hot press is realized through the cooperation between the electromagnetic reversing valve, the first speed regulating valve and the third one-way valve.
The hydraulic driving system of the laminating machine is complex in structure, and the failure rate of the system is improved; the control elements arranged in the system are more, the required installation space is larger, namely the volume of the oil way block is larger, and the service efficiency of a client factory building is reduced; the pressure precision of the system is only ensured to be within +/-1 bar, the pressure control is realized through the electromagnetic reversing valve, and the stepless pressure regulation cannot be performed.
In addition, the system is provided with a logic valve, and the logic valve sealed by a conical surface is usually selected, so that the system is not suitable for light load working conditions.
Therefore, it is very necessary to develop a lifting pressure maintaining system of a hydraulic station of a laminating machine, which simplifies the system, reduces control elements, optimizes the volume of the system and improves the pressure precision of the system.
Disclosure of Invention
The utility model aims to provide a lifting pressure maintaining system of a hydraulic station of a laminating machine, which solves the problems of complex structure, more required control elements, larger required installation space and lower system pressure precision of a hydraulic driving system of the laminating machine in the prior art.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a laminator hydraulic pressure station lift pressurize system, includes oil tank, pneumatic cylinder, low pressure pump and high pressure pump, the low pressure pump output is connected with the low pressure oil circuit, the low pressure oil circuit includes first check valve, first logic valve, first solenoid valve, second solenoid valve and second logic valve, the high pressure pump output is connected with high pressure oil circuit, its characterized in that:
the valve cores of the first logic valve and the second logic valve are spheres, and the second logic valve is provided with a cover plate with an adjusting rod;
the high-pressure oil way comprises a proportional servo valve and a third electromagnetic ball valve, one path of the output end of the high-pressure pump is connected to the proportional servo valve, and the output end of the proportional servo valve passes through the third electromagnetic ball valve to the hydraulic cylinder.
As a further scheme of the utility model: the hydraulic cylinder is also connected with a pressure sensor.
As a further scheme of the utility model: the high-pressure oil way further comprises a stop valve, and the oil return port of the hydraulic cylinder returns to the oil tank through the stop valve.
As a further scheme of the utility model: the high-pressure oil way also comprises a safety valve, and the oil return port of the hydraulic cylinder returns to the oil tank through the safety valve.
As a further scheme of the utility model: in the low-pressure oil way, one path of the output end of the low-pressure pump passes through the first one-way valve to the hydraulic cylinder, and the other path of the output end of the low-pressure pump returns to the oil tank through the first logic valve; one path enters a first oil port of the first electromagnetic ball valve;
the first logic valve control cavity pressure oil returns to the oil tank through a second oil port and a third oil port of the first electromagnetic ball valve;
and the hydraulic cylinder pressure oil enters the second logic valve control cavity through a sixth oil port and a fifth oil port of the second electromagnetic ball valve, and returns to the oil tank through the second logic valve.
As a further scheme of the utility model: the low-pressure oil path further comprises a low-pressure overflow valve, the input end of the low-pressure overflow valve is connected with the output end of the low-pressure pump, and the output end of the low-pressure overflow valve is connected with the oil tank; the high-pressure oil way further comprises a high-pressure overflow valve, the input end of the high-pressure overflow valve is connected with the output end of the high-pressure pump, and the output end of the high-pressure overflow valve is connected with the oil tank.
The utility model has the beneficial effects that through the matching between the proportional servo valve and the third electromagnetic ball valve, the functions of micro pressure relief, slow die opening pressure relief, quick rise, slow rise and pressurization of the hot press are realized, the failure rate of the system is reduced, the number of control elements is reduced, the volume of an oil way block is effectively reduced, and the use efficiency of a client factory building is improved; by setting the proportional servo valve, the pressure precision of the system is within +/-0.5 bar, so that the pressure precision of the system is effectively improved, and the response speed is improved; the first logic valve and the second logic valve with the valve cores being spheres are selected, so that the valve opening pressure is very small, and the valve is further suitable for light load working conditions.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a laminator hydraulic station lift dwell system of the present utility model;
FIG. 2 is a partial schematic diagram of a laminator hydraulic station lift dwell system of the utility model;
wherein the reference numerals are as follows:
100. an oil tank; 200. a hydraulic cylinder; p1, a low-pressure pump; p2, high-pressure pump; 1. a first one-way valve; 2a, a first logic valve; 2b, a second logic valve; 3a, a first electromagnetic ball valve; 3b, a second electromagnetic ball valve; 3c, a third electromagnetic ball valve; 31. a first oil port; 32. a second oil port; 33. a third oil port; 34. a fourth oil port; 35. a fifth oil port; 36. a sixth oil port; 4. a stop valve; 5. a safety valve; 6. a proportional servo valve; 7. a pressure sensor; 8a, a low-pressure overflow valve; 8b, a high-pressure overflow valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 2, the lifting and pressure maintaining system of the laminator hydraulic station of the utility model includes an oil tank 100, a hydraulic cylinder 200, a low pressure pump P1 and a high pressure pump P2.
The output end of the low-pressure pump P1 is connected with a low-pressure oil way, and the low-pressure oil way comprises a first one-way valve 1, a first logic valve 2a, a first electromagnetic ball valve 3a, a second electromagnetic ball valve 3b and a second logic valve 2b; the valve cores of the first logic valve 2a and the second logic valve 2b are spheres, and the second logic valve 2b is provided with a cover plate with an adjusting rod;
the output end of the high-pressure pump P2 is connected with a high-pressure oil circuit, the high-pressure oil circuit comprises a proportional servo valve 6 and a third electromagnetic ball valve 3c, one path of the output end of the high-pressure pump P2 is connected to the proportional servo valve 6, and the output end of the proportional servo valve 6 is connected to the hydraulic cylinder 200 through the third electromagnetic ball valve 3 c.
Specifically, the combined pump is formed by connecting a high-pressure pump P2 and a low-pressure pump P1 in series.
In some of these embodiments, the low pressure pump P1 is a vane pump and the high pressure pump P2 is a radial plunger pump.
In some embodiments, the valve cores of the first logic valve 2a and the second logic valve 2b are spheres, so that the precision is high, the sealing performance is excellent, the valve closing sound is ultra-small, noise is not generated, meanwhile, the volume is small, and the installation is small.
In some of these embodiments, the second logic valve 2b is provided with an adjusting lever for adjusting the opening size of the second logic valve 2b and adjusting the quick-descent speed.
In the prior art, the logic valves on the market are generally conical seals and are not suitable for light load working conditions. Compared with conical surface sealing, the valve cores of the first logic valve 2a and the second logic valve 2b are spheres, the valve opening pressure is very small, and the valve is suitable for light load working conditions.
In some embodiments, the system utilizes the high-precision and high-frequency response characteristics of the proportional servo valve 6 to realize the precise control of the oil pressure precision in the hydraulic cylinder 200; the unloading speed of the hydraulic cylinder 200 can be accurately controlled according to the actual working condition requirement, so that the pressure accuracy of oil in the hydraulic cylinder 200 is controlled in an auxiliary mode.
In some embodiments, the driving voltage of the proportional servo 6 determines the opening size of the proportional servo 6, and further determines the slow-rise speed, the pressurization speed, the micro-pressure release speed and the die-opening pressure release speed of the hot press.
Compared with the prior art, the utility model realizes the functions of micro pressure relief, slow die opening pressure relief, quick rise, slow rise and pressurization of the hot press only through the matching between the proportional servo valve 6 and the third electromagnetic ball valve 3c, reduces the failure rate of the system, has fewer control elements required by the system, namely has smaller installation space, effectively reduces the volume of the oil circuit block, and improves the service efficiency of a client factory building; by arranging the proportional servo valve 6, the pressure precision of the system is within +/-0.5 bar, the pressure precision of the system is effectively improved, and the response speed is improved.
Further, in order to monitor the pressure of the system, a pressure sensor 7 is also connected to the hydraulic cylinder 200.
Further, the high-pressure oil path further comprises a stop valve 4, and an oil return port of the hydraulic cylinder 200 returns to the oil tank 100 through the stop valve 4.
In an emergency, the shut-off valve 4 is used for unloading descent of the hydraulic cylinder 200; the shut-off valve 4 is normally kept closed.
Further, the high-pressure oil circuit further comprises a relief valve 5, and an oil return port of the hydraulic cylinder 200 returns to the oil tank 100 through the relief valve 5. The safety valve 5 provides overload safety overflow protection for the hydraulic cylinder 200.
Specifically, when the peak oil pressure in the hydraulic cylinder 200 exceeds the set pressure of the relief valve 5, the high-pressure oil in the hydraulic cylinder 200 overflows back to the oil tank 100 through the relief valve 5 until the pressure is constantly lower than the set pressure of the relief valve 5.
Further, in the low-pressure oil path, one path of the output end of the low-pressure pump P1 passes through the first one-way valve 1 to the hydraulic cylinder 200, and the other path passes through the first logic valve 2a to return to the oil tank 100; one path enters a first oil port 31 of the first electromagnetic ball valve 3 a; the first logic valve 2a controls the cavity pressure oil to return to the oil tank 100 through the second oil port 32 and the third oil port 33 of the first electromagnetic ball valve 3 a; the hydraulic cylinder 200 pressure oil enters the control cavity of the second logic valve 2b through the sixth oil port 36 and the fifth oil port 35 of the second electromagnetic ball valve 3b, and returns to the oil tank 100 through the second logic valve 2 b.
In some embodiments, the electromagnet 104Y7 of the second electromagnetic ball valve 3b is powered, the oil at the control port of the second logic valve 2b returns to the oil tank 100 through the fifth oil port 35 and the fourth oil port 34, the second logic valve 2b is opened, and the press is opened.
Further, the low-pressure oil path further comprises a low-pressure overflow valve 8a, the input end of the low-pressure overflow valve 8a is connected with the output end of the low-pressure pump P1, and the output end of the low-pressure overflow valve 8a is connected with the oil tank 100; the high-pressure oil circuit also comprises a high-pressure overflow valve 8b, the input end of the high-pressure overflow valve 8b is connected with the output end of the high-pressure pump P2, and the output end of the high-pressure overflow valve 8b is connected with the oil tank 100.
Specifically, the low-pressure relief valve 8a is used to set the maximum operating pressure of the low-pressure pump P1, and the high-pressure relief valve 8b is used to set the maximum operating pressure of the high-pressure pump P2.
The working principle of the lifting pressure maintaining system of the hydraulic station is as follows:
1. quick rise of the hot press:
the electromagnet 104Y2 of the first electromagnetic ball valve 3a is electrified, the valve core of the electromagnet is reversed, the third electromagnetic ball valve 3c works at the left position, and the main oil way of the first logic valve 2a is closed; the low-pressure relief valve 8a operates to set a low-pressure; the driving voltage of-10-0V is supplied to the driver of the proportional servo valve 6, and the proportional servo valve 6 works leftwards.
The oil sent out by the low-pressure pump P1 enters the hydraulic cylinder 200 through the first one-way valve 1, and the oil sent out by the high-pressure pump P2 enters the hydraulic cylinder 200 through the proportional servo valve 6 and the third electromagnetic ball valve 3c in sequence, so that the plunger of the hydraulic cylinder 200 is pushed to rise rapidly.
2. Slow rise of the hot press:
the electromagnet 104Y2 of the first electromagnetic ball valve 3a is powered off, the right (normal) position of the third electromagnetic ball valve 3c works, and the main oil way of the first logic valve 2a is communicated; driving voltage of-10-0V is given to a driver of the proportional servo valve 6, and the proportional servo valve 6 works leftwards; the high-pressure relief valve 8b operates to set the high-pressure.
The oil sent by the low-pressure pump P1 bypasses the low-pressure overflow valve 8a and returns to the oil tank 100 through the main oil way of the first logic valve 2 a; the oil sent out by the high-pressure pump P2 sequentially enters the hydraulic cylinder 200 through the proportional servo valve 6 and the third electromagnetic ball valve 3c to push the plunger to rise slowly.
3. Pressurizing a hot press:
the driver of the proportional servo valve 6 is provided with a driving voltage of-10 to 0V, the left position of the proportional servo valve 6 works, and the high-pressure overflow valve 8b works to set the high-pressure.
When the pressure of the oil in the hydraulic cylinder 200 is increased and approaches to the PLC program set pressure (the actual value is detected and compared by the pressure sensor 7), the oil sent by the low-pressure pump P1 returns to the oil tank 100 through the first logic valve 2a, and the unloading state is kept; the oil sent out by the high-pressure pump P2 sequentially enters the hydraulic cylinder 200 through the proportional servo valve 6 and the third electromagnetic ball valve 3c, and the hydraulic pressure in the hydraulic cylinder 200 rises.
4. Micro pressure relief of hot press:
when the pressure of oil in the hydraulic cylinder 200 exceeds the set value of the pressure sensor 7, the electromagnet 104Y6 of the third electromagnetic ball valve 3c is powered on, and the third electromagnetic ball valve 3c works; the drive voltage of 0 to +10V is supplied to the driver of the proportional servo valve 6, and the proportional servo valve 6 works in the right position.
Part of oil in the hydraulic cylinder 200 returns to the oil tank 100 through the third electromagnetic ball valve 3c and the proportional servo valve 6 in sequence, and the pressure in the hydraulic cylinder 200 is slightly reduced until the pressure is reduced to the set value of the pressure sensor 7.
5. Slow die opening and pressure relief of hot press:
the electromagnet 104Y6 of the third electromagnetic ball valve 3c is powered on, and the third electromagnetic ball valve 3c works; driving voltage of 0 to +10V is given to a driver of the proportional servo valve 6, and the proportional servo valve 6 works in the right position;
part of oil in the hydraulic cylinder 200 returns to the oil tank 100 through the third electromagnetic ball valve 3c and the proportional servo valve 6 in sequence, the pressure in the hydraulic cylinder 200 is reduced, and the plunger drives the platform and the hot plate to slowly descend.
6. Quick mould opening of the hot press:
the electromagnet 104Y6 of the third electromagnetic ball valve 3c is powered on, and the third electromagnetic ball valve 3c works; driving voltage of 0 to +10V is given to a driver of the proportional servo valve 6, and the proportional servo valve 6 works in the right position; the second electromagnetic ball valve 3b is powered on, and the main oil way of the second logic valve 2b is communicated;
a small part of oil in the hydraulic cylinder 200 returns to the oil tank 100 through the third electromagnetic ball valve 3c and the proportional servo valve 6 in sequence, and most of oil returns to the oil tank 100 through the main oil way of the second logic valve 2b, so that the plunger drives the platform and the hot plate to quickly descend.
7. Manual pressure relief of a hot press:
the shut-off valve 4 is opened and the hydraulic cylinder 200 is depressurized.
Under the action of the dead weight of the plunger, the platform and the hot plate, the oil of the hydraulic cylinder 200 returns to the oil tank 100 through the stop valve 4, and the plunger drives the platform and the hot plate to slowly descend.
The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (6)
1. The utility model provides a laminator hydraulic pressure station lift pressurize system, includes oil tank (100), pneumatic cylinder (200), low pressure pump (P1) and high-pressure pump (P2), low pressure pump (P1) output is connected with the low pressure oil circuit, the low pressure oil circuit includes first check valve (1), first logic valve (2 a), first solenoid valve (3 a), second solenoid valve (3 b) and second logic valve (2 b), high pressure pump (P2) output is connected with high pressure oil circuit, its characterized in that:
the valve cores of the first logic valve (2 a) and the second logic valve (2 b) are spheres, and the second logic valve (2 b) is provided with a cover plate with an adjusting rod;
the high-pressure oil way comprises a proportional servo valve (6) and a third electromagnetic ball valve (3 c), one path of the output end of the high-pressure pump (P2) is connected to the proportional servo valve (6), and the output end of the proportional servo valve (6) passes through the third electromagnetic ball valve (3 c) to the hydraulic cylinder (200).
2. The laminator hydraulic station lift dwell system of claim 1, wherein: the hydraulic cylinder (200) is also connected with a pressure sensor (7).
3. The laminator hydraulic station lift dwell system of claim 1, wherein: the high-pressure oil way further comprises a stop valve (4), and an oil return port of the hydraulic cylinder (200) returns to the oil tank (100) through the stop valve (4).
4. The laminator hydraulic station lift dwell system of claim 1, wherein: the high-pressure oil circuit further comprises a safety valve (5), and an oil return port of the hydraulic cylinder (200) returns to the oil tank (100) through the safety valve (5).
5. The laminator hydraulic station lift dwell system of claim 1, wherein: in the low-pressure oil way, one path of the output end of the low-pressure pump (P1) passes through the first one-way valve (1) to the hydraulic cylinder (200), and the other path of the output end of the low-pressure pump returns to the oil tank (100) through the first logic valve (2 a); one path enters a first oil port (31) of the first electromagnetic ball valve (3 a);
the first logic valve (2 a) controls the pressure oil of the cavity to return to the oil tank (100) through a second oil port (32) and a third oil port (33) of the first electromagnetic ball valve (3 a);
the hydraulic cylinder (200) pressure oil enters the control cavity of the second logic valve (2 b) through a sixth oil port (36) and a fifth oil port (35) of the second electromagnetic ball valve (3 b), and returns to the oil tank (100) through the second logic valve (2 b).
6. The laminator hydraulic station lift dwell system of claim 1, wherein: the low-pressure oil path further comprises a low-pressure overflow valve (8 a), the input end of the low-pressure overflow valve (8 a) is connected with the output end of the low-pressure pump (P1), and the output end of the low-pressure overflow valve (8 a) is connected with the oil tank (100); the high-pressure oil way further comprises a high-pressure overflow valve (8 b), the input end of the high-pressure overflow valve (8 b) is connected with the output end of the high-pressure pump (P2), and the output end of the high-pressure overflow valve (8 b) is connected with the oil tank (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321914506.4U CN220365785U (en) | 2023-07-20 | 2023-07-20 | Laminator hydraulic pressure station lift pressurize system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321914506.4U CN220365785U (en) | 2023-07-20 | 2023-07-20 | Laminator hydraulic pressure station lift pressurize system |
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| Publication Number | Publication Date |
|---|---|
| CN220365785U true CN220365785U (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321914506.4U Active CN220365785U (en) | 2023-07-20 | 2023-07-20 | Laminator hydraulic pressure station lift pressurize system |
Country Status (1)
| Country | Link |
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| CN (1) | CN220365785U (en) |
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2023
- 2023-07-20 CN CN202321914506.4U patent/CN220365785U/en active Active
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