CN218598494U - Hydraulic driving system of laminating machine - Google Patents
Hydraulic driving system of laminating machine Download PDFInfo
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- CN218598494U CN218598494U CN202222901728.4U CN202222901728U CN218598494U CN 218598494 U CN218598494 U CN 218598494U CN 202222901728 U CN202222901728 U CN 202222901728U CN 218598494 U CN218598494 U CN 218598494U
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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
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Abstract
The utility model discloses a laminator hydraulic drive system, concatenate the combination pump including oil tank, pneumatic cylinder, high-low pressure, the low pressure pump output termination has the low pressure oil circuit, and the high pressure pump output is connected with the high pressure oil circuit, through the switching value PID closed-loop control who adopts constitution such as a plurality of solenoid valves, governing valve and energy storage ware, pressure sensor, the continuous fine setting of closing pressure that opens of accessible PLC control solenoid valve replaces complicated analog quantity control. Is provided with an energy accumulator and has the function of automatic pressure compensation.
Description
Technical Field
The utility model belongs to laminator, concretely relates to laminator hydraulic drive system.
Background
Laminators are mechanical devices that press together multiple layers of material, with heated laminators being used for the lamination of PBC sheets.
Most of the existing laminator manufacturers adopt the combination of a common motor and a proportional valve to realize the laminating process of the laminator. Although the hydraulic system can meet the technological requirements, the hydraulic system has the defects of poor reliability, large power consumption of continuous operation of the motor (the motor needs to be frequently started and operated to meet the pressure maintaining performance of the laminating machine), difficult maintenance and the like, in addition, the system has large heat productivity, an additional oil cooling system needs to be matched, and the analog quantity control adopted by the proportional valve is too complicated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a laminator hydraulic drive system is provided, can satisfy the technological requirement, the reliability is high, and energy-efficient and maintenance are simple, need not complicated proportional control and motor continuous operation, and the system gives out heat and does not need supporting fluid cooling system for a short time.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a hydraulic driving system of a laminator comprises an oil tank, a hydraulic cylinder and a high-low pressure tandem combination pump driven by a motor, wherein the output end of the low pressure pump of the high-low pressure tandem combination pump is connected with a low pressure oil circuit and comprises a first one-way valve, a first logic valve, a first electromagnetic ball valve, a second electromagnetic ball valve and a second logic valve, one path of the output end of the low pressure pump passes through the first one-way valve to the hydraulic cylinder, the other path of the output end of the low pressure pump passes through a first logic valve oil return box, the other path of the output end of the low pressure pump sequentially passes through the first electromagnetic ball valve and the first logic valve oil return box, and the other path of the output end of the low pressure pump sequentially passes through the second electromagnetic ball valve and the second logic valve oil return box; the high-pressure pump output end of the high-low pressure tandem combination pump is connected with a high-pressure oil circuit which comprises an electromagnetic directional valve, a second one-way valve, a first speed regulating valve and a third one-way valve, one path of the high-pressure pump output end is connected to the electromagnetic directional valve, one output end of the electromagnetic directional valve is connected to the hydraulic cylinder through the second one-way valve, and the other output end of the electromagnetic directional valve is connected to the hydraulic cylinder through the first speed regulating valve and the third one-way valve in sequence.
The high-pressure oil way further comprises a fourth one-way valve 1d, a first stop valve, an energy accumulator, an energy storage pressure sensor, a second speed regulating valve, a fifth one-way valve and a third electromagnetic ball valve, the other path of the output end of the high-pressure pump is connected to the fourth one-way valve 1d, one path of the output end of the fourth one-way valve 1d is connected to the energy accumulator through the first stop valve, the other path is connected to the energy storage pressure sensor, and the other path is sequentially connected to the hydraulic cylinder through the second speed regulating valve, the fifth one-way valve and the third electromagnetic ball valve.
The high-pressure oil circuit further comprises a high-pressure filter, and the output end of the high-pressure pump is connected with the high-pressure filter in advance.
The high-pressure oil way also comprises a second speed regulating valve and a fourth electromagnetic ball valve, and an oil return port of the hydraulic cylinder sequentially passes through the second speed regulating valve and the fourth electromagnetic ball valve and returns to an oil tank.
The high-pressure oil way also comprises a third speed regulating valve and a fifth electromagnetic ball valve, and an oil return port of the hydraulic cylinder sequentially passes through the third speed regulating valve and the fifth electromagnetic ball valve and an oil return tank.
The high-pressure oil way further comprises a second stop valve, and an oil return port of the hydraulic cylinder returns to an oil tank through the second stop valve.
The high-pressure oil way further comprises a first safety valve, and an oil return port of the hydraulic cylinder returns to the oil tank through the first safety valve.
The high-pressure oil way also comprises a second safety valve and a third stop valve, wherein the input end of the second safety valve is connected with the output end of the first stop valve, and the output end of the second safety valve is connected with the oil tank; the input end of the third stop valve is connected with the energy accumulator, and the output end of the third stop valve is connected with the oil tank.
The low-pressure oil circuit also 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 circuit also comprises a high-pressure overflow valve, wherein 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 hydraulic cylinder is also connected with a system pressure sensor.
Adopt the utility model discloses a laminator hydraulic drive system has following several advantages:
1. the closed-loop control of the switching value PI D formed by a plurality of electromagnetic valves, speed regulating valves, energy accumulators, pressure sensors and the like can be adopted, the PLC can control the electromagnetic valves to be continuously opened and closed to carry out fine adjustment of pressure, and complicated analog quantity control is replaced.
2. The device has the advantages of high reliability, stable pressure, strong oil pollution resistance, high efficiency and energy conservation, is convenient to use, does not need to adopt complex proportional control, and is simple to maintain.
3. The high-low pressure tandem combination pump is provided with a high-flow low-pressure oil pump and a low-flow high-pressure oil pump, the low-pressure oil pump is a vane pump, the high-pressure oil pump is a radial plunger pump, so that the laminating machine can be quickly closed, the pressure can be stably increased, and the power consumption can be reduced.
4. The laminator can be controlled to ascend and descend by corresponding solenoid valves.
5. The laminator can be descended to return the oil in the hydraulic cylinder to the oil tank by the self-weight of movable parts such as the hot plate, the platform and the plunger.
6. Is provided with an energy accumulator and has the function of automatic pressure compensation.
Drawings
The following detailed description of the invention is made with reference to the accompanying drawings and the detailed description:
fig. 1 is a schematic diagram of a laminator hydraulic drive system of the present invention.
Detailed Description
The utility model discloses a laminator hydraulic drive system is shown in fig. 1, specifically include oil tank 100, pneumatic cylinder 200, the high-low pressure by motor drive concatenates combination pump etc. wherein, pneumatic cylinder 200 is connected with system pressure sensor 8b, the high-low pressure concatenates combination pump and concatenates by impeller pump and radial plunger pump and forms, as the impeller pump of low-pressure pump P1, its output termination has the low pressure oil circuit, this low pressure oil circuit includes first check valve 1a, first logic valve 2a, first electromagnetism ball valve 3a, second electromagnetism ball valve 3b, second logic valve 2b, low pressure pump P1 output is all the way through first check valve 1a to pneumatic cylinder 200, all the way is through first logic valve 2a oil return tank 100, all the way is through first electromagnetism ball valve 3a, first logic valve 2a oil return tank 100 in proper order, all the way is through second electromagnetism ball valve 3b, second logic valve 2b oil return tank 100 in proper order; the output end of the radial plunger pump serving as the high-pressure pump P2 is connected with a high-pressure oil path and comprises an electromagnetic directional valve 4, a second one-way valve 1b, a first speed regulating valve 5a and a third one-way valve 1c, one path of the output end of the high-pressure pump P2 is connected to the electromagnetic directional valve 4, one output end of the electromagnetic directional valve 4 passes through the second one-way valve 1b to the hydraulic cylinder 200, and the other output end of the electromagnetic directional valve 4 sequentially passes through the first speed regulating valve 5a and the third one-way valve 1c to the hydraulic cylinder 200.
The high-pressure oil way also comprises a fourth one-way valve 1d, a first stop valve 6a, an energy accumulator 10, an energy storage pressure sensor 8a, a second speed regulating valve 5b, a fifth one-way valve 1e and a third electromagnetic ball valve 3c, wherein the other path of the output end of the high-pressure pump P2 is connected to the fourth one-way valve 1d, one path of the output end of the fourth one-way valve 1d passes through the first stop valve 6a to the energy accumulator 10, the other path of the output end of the fourth one-way valve 1d passes through the energy storage pressure sensor 8a, and the other path of the output end of the fourth one-way valve sequentially passes through the second speed regulating valve 5b, the fifth one-way valve 1e and the third electromagnetic ball valve 3c to the hydraulic cylinder 200.
The high-pressure oil circuit can also comprise a high-pressure filter 11, and the output end of the high-pressure pump P2 is connected with the high-pressure filter 11 and then connected with the high-pressure filter.
The high-pressure oil circuit also comprises a second speed regulating valve 5b and a fourth electromagnetic ball valve 3d, and an oil return port of the hydraulic cylinder 200 sequentially returns to the oil tank 100 through the second speed regulating valve 5b and the fourth electromagnetic ball valve 3 d.
The high-pressure oil circuit also comprises a third speed regulating valve 5c and a fifth electromagnetic ball valve 3e, and an oil return port of the hydraulic cylinder 200 sequentially returns to the oil tank 100 through the third speed regulating valve 5c and the fifth electromagnetic ball valve 3 e.
The high-pressure oil circuit may further include a second cut-off valve 6b, and an oil return port of the hydraulic cylinder 200 returns to the oil tank 100 through the second cut-off valve 6 b.
The high pressure oil path may further include a first relief valve 7a, and the oil return port of the hydraulic cylinder 200 returns to the tank 100 via the first relief valve 7 a. When the hydraulic system pressure (measured by the system pressure sensor 8 b) exceeds the set pressure of the first relief valve 7a, the relief pressure is opened, which serves to protect the hydraulic system.
The high-pressure oil path also comprises a second safety valve 7b and a third stop valve 6c, wherein the input end of the second safety valve 7b is connected with the output end of the first stop valve 6a, and the output end is connected with the oil tank 100; the input end of the third stop valve 6c is connected with the energy accumulator, and the output end is connected with the oil tank 100.
In addition, the low-pressure oil path can also comprise a low-pressure overflow valve 9a, the input end of the low-pressure overflow valve 9a is connected with the output end of the low-pressure pump P1, the output end of the low-pressure overflow valve is connected with an oil tank 100, and the valve is used for setting the maximum working pressure of the low-pressure pump P1; the high-pressure oil circuit further comprises a high-pressure overflow valve 9b, the input end of the high-pressure overflow valve 9b is connected with the output end of the high-pressure pump P2, the output end of the high-pressure overflow valve is connected with an oil tank 100, and the valve is used for setting the maximum working pressure of the high-pressure pump P2.
The working principle of the hydraulic driving system is as follows:
1. starting:
when the motor M runs and the combination pump runs, oil liquid sent out by the low-pressure pump P1 returns to the oil tank 100 through the first logic valve 2 a. The oil delivered by the high-pressure pump P2 enters the accumulator 10, so that the pressure of the accumulator 10 is increased to store energy, and when the pressure reaches a set pressure (set by the energy storage pressure sensor 8 a), the motor M stops rotating.
2. Quick rising of the hot press:
oil liquid sent by the low-pressure pump P1 enters the hydraulic cylinder 200 through the first check valve 1a, oil liquid sent by the high-pressure pump P2 also enters the hydraulic cylinder 200 through the electromagnetic directional valve 4 and the second check valve 1b to push a plunger of the hydraulic cylinder 200 to rise quickly, the low-pressure overflow valve 9a is used for setting low-pressure, and the first electromagnetic ball valve 3a controls the first logic valve 2a to be opened and closed.
3. Slow-speed rising of the hot press:
the oil delivered by the low pressure pump P1 is returned to the oil tank 100 through the first logic valve 2a by the first electromagnetic ball valve 3a being energized. Oil liquid sent by the high-pressure pump P2 enters the hydraulic cylinder 200 through the electromagnetic directional valve 4 and the second one-way valve 1b, and pushes the plunger to rise slowly.
3. Pressurizing by a hot press:
when the hydraulic pressure in the hydraulic cylinder 200 rises and approaches the PLC programmed pressure (the actual value is detected and compared by the system pressure sensor 8 b), the oil delivered from the low pressure pump P1 returns to the tank 100 through the first logic valve 2 a. Oil liquid sent out by the high-pressure pump P2 enters the hydraulic cylinder 200 through the electromagnetic directional valve 4, the first speed regulating valve 5a and the second one-way valve 1b, so that the hydraulic pressure in the hydraulic cylinder 200 is slowly increased.
4. Pressure maintaining and supplementing of the hot press:
when the pressure value of the hydraulic system is lower than the set value of the PLC program by 2bar (the actual value is detected by the system pressure sensor 8b and compared), the third electromagnetic ball valve 3c is opened, the high-pressure oil pre-stored in the energy accumulator 10 enters the hydraulic cylinder 200 through the first stop valve 6a, the second speed regulating valve 5b, the fifth one-way valve 1e and the third electromagnetic ball valve 3c (one-way), and the pressure in the hydraulic cylinder 200 rises. When the set value is reached, the third electromagnetic ball valve 3c is closed. Whereas the first shut-off valve 6a is closed only when the accumulator 10 is serviced. After the pressure is supplemented for many times, when the pressure of the energy accumulator is lower than the set value min of the energy storage pressure relay 8a, the motor M starts to supplement the pressure to the energy accumulator 10 until the pressure reaches the set value max.
5. And (3) micro pressure relief of the hot press:
the fourth electromagnetic ball valve 3d is opened and the hydraulic cylinder 200 is slightly depressurized. The oil in the hydraulic cylinder 200 returns to the oil tank 100 through the second speed regulating valve 5b and the fourth electromagnetic ball valve 3d, and the pressure in the hydraulic cylinder 200 is slightly reduced.
5. And (3) slow die opening and pressure relief of the hot press:
the fifth electromagnetic ball valve 3e 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, oil liquid of the hydraulic cylinder 200 returns to the oil tank 100 through the third speed regulating valve 5c and the fifth electromagnetic ball valve 3e, and the plunger drives the platform and the hot plate to descend slowly.
6. And (3) fast opening the die of the hot press:
the second electromagnetic ball valve 3b is opened, the second logic valve 2b is opened, and the hydraulic cylinder 200 is depressurized. Under the action of the deadweight of the plunger, the platform and the hot plate, oil in the hydraulic cylinder 200 returns to the oil tank 100 through the second logic valve 2b, and the plunger drives the platform and the hot plate to rapidly descend.
7. Manual pressure relief of the hot press:
and the second stop valve 6b is opened, the hydraulic cylinder 200 is decompressed, under the self-weight action of the plunger, the platform and the hot plate, the oil liquid of the hydraulic cylinder 200 returns to the oil tank 100 through the second stop valve, and the plunger drives the platform and the hot plate to slowly descend.
8. Hydraulic circuit for pressure compensation of hot press energy accumulator
The third electromagnetic ball valve 3c is opened, the high-pressure oil pre-stored in the energy accumulator enters the hydraulic cylinder 200 through the first stop valve 6a, the second speed regulating valve 5b, the fifth one-way valve 1e and the third electromagnetic ball valve 3c, and the pressure in the hydraulic cylinder 200 rises. After reaching the set value, the third electromagnetic ball valve 3c is closed.
9. Pressure relief of the accumulator:
and opening the second stop valve, and releasing the pressure of the energy accumulator.
However, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are within the scope of the appended claims as long as they are within the true spirit of the present invention.
Claims (10)
1. The utility model provides a laminator hydraulic drive system, includes oil tank, pneumatic cylinder, its characterized in that: the low-pressure pump output end of the high-pressure and low-pressure tandem combination pump is connected with a low-pressure oil way and comprises a first one-way valve, a first logic valve, a first electromagnetic ball valve, a second electromagnetic ball valve and a second logic valve, wherein one path of the low-pressure pump output end passes through the first one-way valve to the hydraulic cylinder, the other path of the low-pressure pump output end passes through the first logic valve and returns to the oil tank, the other path of the low-pressure pump output end passes through the first electromagnetic ball valve and the first logic valve and returns to the oil tank sequentially, and the other path of the low-pressure pump output end passes through the second electromagnetic ball valve and the second logic valve and returns to the oil tank sequentially; the high-pressure pump output end of the high-low pressure tandem combination pump is connected with a high-pressure oil circuit which comprises an electromagnetic directional valve, a second one-way valve, a first speed regulating valve and a third one-way valve, one path of the high-pressure pump output end is connected to the electromagnetic directional valve, one output end of the electromagnetic directional valve is connected to the hydraulic cylinder through the second one-way valve, and the other output end of the electromagnetic directional valve is connected to the hydraulic cylinder through the first speed regulating valve and the third one-way valve in sequence.
2. The laminating machine hydraulic drive system of claim 1, wherein: the high-pressure oil way further comprises a fourth one-way valve, a first stop valve, an energy accumulator, an energy storage pressure sensor, a second speed regulating valve, a fifth one-way valve and a third electromagnetic ball valve, the other path of the output end of the high-pressure pump is connected to the fourth one-way valve, the output end of the fourth one-way valve passes through the first stop valve to the energy accumulator, and passes through the energy storage pressure sensor and the second speed regulating valve, the fifth one-way valve and the third electromagnetic ball valve to the hydraulic cylinder in sequence.
3. A laminator hydraulic drive system according to claim 1 or 2, wherein: the high-pressure oil way also comprises a high-pressure filter, and the output end of the high-pressure pump is connected with the high-pressure filter in advance.
4. A laminator hydraulic drive system according to claim 1 or 2, wherein: the high-pressure oil way also comprises a second speed regulating valve and a fourth electromagnetic ball valve, and an oil return port of the hydraulic cylinder sequentially passes through the second speed regulating valve and the fourth electromagnetic ball valve and returns to an oil tank.
5. A laminator hydraulic drive system according to claim 1 or 2, wherein: the high-pressure oil way also comprises a third speed regulating valve and a fifth electromagnetic ball valve, and an oil return port of the hydraulic cylinder sequentially passes through the third speed regulating valve and the fifth electromagnetic ball valve and an oil return tank.
6. A laminator hydraulic drive system according to claim 1 or 2, wherein: the high-pressure oil way further comprises a second stop valve, and an oil return port of the hydraulic cylinder returns to an oil tank through the second stop valve.
7. The laminator hydraulic drive system of claim 1, wherein: the high-pressure oil way further comprises a first safety valve, and an oil return port of the hydraulic cylinder returns to the oil tank through the first safety valve.
8. The laminating machine hydraulic drive system of claim 1, wherein: the high-pressure oil way also comprises a second safety valve and a third stop valve, the input end of the second safety valve is connected with the output end of the first stop valve, and the output end of the second safety valve is connected with the oil tank; the input end of the third stop valve is connected with the energy accumulator, and the output end of the third stop valve is connected with the oil tank.
9. The laminating machine hydraulic drive system of claim 1, wherein: the low-pressure oil circuit also 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 circuit also comprises a high-pressure overflow valve, wherein 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.
10. The laminator hydraulic drive system of claim 1, wherein: the hydraulic cylinder is also connected with a system pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222901728.4U CN218598494U (en) | 2022-11-01 | 2022-11-01 | Hydraulic driving system of laminating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222901728.4U CN218598494U (en) | 2022-11-01 | 2022-11-01 | Hydraulic driving system of laminating machine |
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| Publication Number | Publication Date |
|---|---|
| CN218598494U true CN218598494U (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222901728.4U Active CN218598494U (en) | 2022-11-01 | 2022-11-01 | Hydraulic driving system of laminating machine |
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| Country | Link |
|---|---|
| CN (1) | CN218598494U (en) |
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2022
- 2022-11-01 CN CN202222901728.4U patent/CN218598494U/en active Active
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