CN115091805A - Remote pressure regulating and switching device of metal packing hydraulic machine and control method thereof - Google Patents
Remote pressure regulating and switching device of metal packing hydraulic machine and control method thereof Download PDFInfo
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- CN115091805A CN115091805A CN202210793110.2A CN202210793110A CN115091805A CN 115091805 A CN115091805 A CN 115091805A CN 202210793110 A CN202210793110 A CN 202210793110A CN 115091805 A CN115091805 A CN 115091805A
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- 238000012856 packing Methods 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 title claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3003—Details
- B30B9/3007—Control arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/166—Electrical control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/32—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a remote pressure regulating and pressure switching device of a metal packing hydraulic machine, which comprises an oil pump X, wherein an oil inlet of the oil pump X is communicated with an oil tank, and an oil outlet of the oil pump X is communicated with a liquid outlet pipeline; the inner cavity of the oil pump X is communicated with an electromagnetic directional valve, and the electromagnetic directional valve is communicated with a high-pressure overflow valve and a medium-pressure overflow valve; the liquid outlet pipeline is communicated with an oil cylinder telescopic control mechanism and an oil cylinder stroke control mechanism. The invention designs the pressure switching loop, can remotely control the oil pump to unload oil, outputs high pressure or medium pressure according to the requirement, reduces energy loss and heating, and also accurately controls the formation of the oil cylinder, so that the packing position can be accurately positioned at a preset position.
Description
Technical Field
The invention relates to the field of machinery, in particular to a remote pressure regulating and switching device for a metal packing hydraulic machine.
Background
The main technological process of the existing packer is that two main oil cylinders push waste metal to form opposite vertex to complete packing. However, the pushing speed of the two oil cylinders of the existing device is difficult to control, so that the opposite vertex positions of the two oil cylinders are difficult to be exactly at preset positions. In addition, in the existing device, two oil cylinders are usually controlled by oil pumps respectively, so that the energy consumption is high, and the hydraulic system is impacted greatly, and needs to be improved.
Disclosure of Invention
In order to solve the technical problem, the invention provides a remote pressure regulating and switching device of a metal packing hydraulic machine.
The purpose of the invention is realized by the following technical scheme:
a remote pressure regulating and pressure switching device of a metal packing hydraulic machine comprises an oil pump X, wherein an oil inlet of the oil pump X is communicated with an oil tank, and an oil outlet of the oil pump X is communicated with a liquid outlet pipeline; an inner cavity of the oil pump X is communicated with an electromagnetic directional valve, and the electromagnetic directional valve is communicated with a high-pressure overflow valve and a medium-pressure overflow valve; the liquid outlet pipeline is communicated with an oil cylinder telescopic control mechanism and an oil cylinder stroke control mechanism; the oil cylinder expansion control mechanism comprises a first cartridge valve and a second cartridge valve which are communicated with the liquid outlet pipeline; the first cartridge valve is communicated with a first electromagnetic valve, and the second cartridge valve is communicated with a second electromagnetic valve; the second electromagnetic valve is respectively communicated with the rod cavities of the first oil cylinder and the second oil cylinder; the first electromagnetic valve is communicated with the oil cylinder stroke control mechanism; the oil cylinder stroke control mechanism is communicated with the first solenoid valve and comprises a third cartridge valve and a fourth cartridge valve which are respectively communicated with the first solenoid valve; the third cartridge valve is communicated with a rodless cavity of the first oil cylinder through a third electromagnetic valve; the fourth cartridge valve is communicated with a rodless cavity of the second oil cylinder through a fourth electromagnetic valve; a first travel switch is arranged in cooperation with the first oil cylinder and is in communication connection with the third electromagnetic valve; and a second travel switch is arranged by matching with the second oil cylinder and is in communication connection with a fourth electromagnetic valve.
In a further improvement, the first cartridge valve is communicated with a first pressure control cartridge valve, and the first pressure control cartridge valve is communicated with a fifth electromagnetic valve, an oil return pipeline and a first overflow valve; the second cartridge valve is communicated with a second pressure control cartridge valve, the second pressure control cartridge valve is communicated with a sixth electromagnetic valve, an oil return pipeline and a second overflow valve, and the oil return pipeline is communicated with an oil tank.
In a further improvement, the pressure set value of the high-pressure overflow valve is 315 bar.
In a further improvement, the pressure set value of the medium-pressure overflow valve is 200 bar.
A control method of a metal packing hydraulic press remote pressure regulating and pressure switching device comprises the following steps:
the method comprises the following steps that firstly, an oil pump X is controlled to be started in a remote mode, a second electromagnetic valve is powered on, so that a second cartridge valve closes an oil way entering rod cavities of a first oil cylinder and a second oil cylinder, the first electromagnetic valve is powered off, pressure oil enters rodless cavities of the first oil cylinder and the second oil cylinder, when one oil cylinder reaches a preset position first, the oil cylinder is sensed by a corresponding travel switch, so that the corresponding electromagnetic valve is controlled to be powered on, the corresponding cartridge valve blocks the oil way, the oil cylinder pressure reaching the preset position first is cut off, and the position of the oil cylinder is locked; then the pressure oil is input into the other oil cylinder; when the first oil cylinder and the second oil cylinder extend in place; the first electromagnetic valve is electrified, the second electromagnetic valve is powered off, so that pressure oil enters the rod cavities of the first oil cylinder and the second oil cylinder, and the pressure oil in the rodless cavities of the first oil cylinder and the second oil cylinder returns to the oil tank;
step two, under the condition that the material is waiting for the packer, the electromagnetic directional valve is not powered, the valve core of the electromagnetic directional valve is positioned at the middle position, the oil pump is remotely controlled to control oil unloading, and the whole hydraulic system unloads, so that the energy loss and the heating are reduced; when high pressure needs to be output, the control electromagnetic directional valve is communicated with a high-pressure overflow valve; when the medium pressure is required to be output, the electromagnetic directional valve is controlled to be communicated with the medium pressure overflow valve so as to output the medium pressure.
Compared with the prior art, the invention has the following beneficial effects:
1. the remote pressure regulating technology is applied, the remote control oil pump is adopted, and the control oil for pumping the oil is introduced into the remote pressure regulating valve bank. The valve bank is arranged at the most convenient position for operators, and the working strength is reduced.
2. The oil cylinder can reach the most preset clamping position through the travel switch and the reversing valve, and the accuracy of the packing position is guaranteed.
3. The hydraulic system is provided with a pressure switching loop, the electromagnetic directional valve is not powered on under the condition that the material is to be charged by the packer, the valve core of the electromagnetic directional valve is positioned in the middle position, the oil pump is remotely controlled to control oil unloading, and the whole hydraulic system unloads, so that the energy loss is reduced, and the heating is reduced. Under the condition that the packaging machine works at high pressure, the electromagnetic directional valve YV1 is electrified, the valve core of the electromagnetic directional valve is positioned at the left position, the high-pressure overflow valve acts, and the system outputs high pressure. Under the condition that the packer works at medium pressure, the electromagnetic directional valve YV2 is electrified, the valve core of the electromagnetic directional valve is positioned at the right position, the medium-pressure overflow valve is acted, and the system outputs medium pressure. The application of the technology increases the utilization rate of energy, reduces the impact of a hydraulic system and prolongs the service life of the hydraulic system.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limitative of the invention.
FIG. 1 is a schematic diagram of an oil path of an electromagnetic directional valve communicated with a high-pressure overflow valve, a medium-pressure overflow valve and an oil tank;
fig. 2 is a schematic diagram of oil paths of the oil cylinder telescopic control mechanism and the oil cylinder stroke control mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Example 1
A remote pressure regulating and pressure switching device of a metal packing hydraulic machine comprises an oil pump X, wherein an oil inlet of the oil pump X is communicated with an oil tank, and an oil outlet of the oil pump X is communicated with a liquid outlet pipeline P; an inner cavity of the oil pump X is communicated with an electromagnetic directional valve 4.11, and the electromagnetic directional valve 4.11 is communicated with a high-pressure overflow valve 5.11 and a medium-pressure overflow valve 6.11; the liquid outlet pipeline P is communicated with an oil cylinder telescopic control mechanism and an oil cylinder stroke control mechanism; the cylinder extension control mechanism is used for controlling extension of the first cylinder B1-2 and the second cylinder B1-2, and the cylinder stroke control mechanism is used for controlling strokes of the first cylinder B1-2 and the second cylinder B1-2. The pressure set value of the high-pressure overflow valve 5.11 is 315 bar. The pressure set value of the medium-pressure overflow valve 6.11 is 200 bar.
Under the condition that the material is waited to pack the machine, the solenoid directional valve is not electrified, and the solenoid directional valve case is in the meso position, and remote control oil pump control oil off-load, whole hydraulic system off-load has reduced energy loss, reduces and generates heat. When high pressure needs to be output, the electromagnetic directional valve 4.11 is controlled to be communicated with the high-pressure overflow valve 5.11, so that high pressure is output; when the medium pressure is required to be output, the electromagnetic directional valve 4.11 is controlled to be communicated with the medium pressure overflow valve 6.11, so that the medium pressure is output.
Therefore, the pressure required to be output can be adopted as required, energy waste caused by overhigh output pressure due to overhigh set pressure value of the overflow valve when the medium pressure is required to be input can be avoided, the utilization rate of energy is increased, the impact of a hydraulic system is reduced, and the service life of the hydraulic system is prolonged.
Example 2
The following modifications are made on the basis of example 1: the oil cylinder expansion control mechanism comprises a first cartridge valve 1.1 and a second cartridge valve 1.2 which are communicated with the liquid outlet pipeline P; the first cartridge valve 1.1 is communicated with a first electromagnetic valve 3.1, and the second cartridge valve 1.2 is communicated with a second electromagnetic valve 3.2; the second electromagnetic valve 3.2 is respectively communicated with the rod cavities of the first oil cylinder B1-2 and the second oil cylinder B1-2; the first electromagnetic valve 3.1 is communicated with the oil cylinder stroke control mechanism; the oil cylinder stroke control mechanism is communicated with a third cartridge valve 5.1 and a fourth cartridge valve 6.1 which are respectively communicated with the first electromagnetic valve 3.1; the third cartridge valve 5.1 is communicated with a rodless cavity of a first oil cylinder B1-2 through a third electromagnetic valve 4.1; the fourth cartridge valve 6.1 is communicated with a rodless cavity of a second oil cylinder B1-2 through a fourth electromagnetic valve 4.2; a first travel switch SQ1 is arranged by matching with the first oil cylinder B1-2, and the first travel switch SQ1 is in communication connection with a third electromagnetic valve 4.1; and a second stroke switch SQ2 is arranged in cooperation with the second oil cylinder B1-2, and the second stroke switch SQ2 is in communication connection with the fourth electromagnetic valve 4.2.
The first cartridge valve 1.1 is communicated with a first pressure control cartridge valve 8.1, and the first pressure control cartridge valve 8.1 is communicated with a fifth electromagnetic valve 7.1, an oil return pipeline T and a first overflow valve W1; the second cartridge valve 1.2 is communicated with a second pressure control cartridge valve 8.2, the second pressure control cartridge valve 8.2 is communicated with a sixth electromagnetic valve 7.2, an oil return pipeline T and a second overflow valve W2, and the oil return pipeline T is communicated with an oil tank.
Thus, when the metal packing hydraulic press is controlled, firstly, the oil pump X is remotely controlled to be started, the second electromagnetic valve 3.2 is powered on, so that the second cartridge valve 1.2 is closed to enter oil passages with rod cavities of the first oil cylinder B1-2 and the second oil cylinder B1-2, the first electromagnetic valve 3.1 is powered off, pressure oil enters rodless cavities of the first oil cylinder B1-2 and the second oil cylinder B1-2, when one of the oil cylinders reaches a preset position first, the oil cylinder reaches the preset position first and is sensed by a corresponding stroke switch, so that the corresponding electromagnetic valve is controlled to be powered on, the corresponding cartridge valve blocks the oil passages, the oil cylinder pressure reaching the preset position first is cut off, and the position of the oil cylinder is locked; then the pressure oil is input into the other oil cylinder until the other oil cylinder is in place. Therefore, the two main oil cylinders push the waste metal to form opposite vertex to finish packaging, and meanwhile, the opposite vertex position is ensured to be in a preset position.
When the first oil cylinder B1-2 and the second oil cylinder B1-2 both extend to the right position; the first electromagnetic valve 3.1 is electrified, the second electromagnetic valve 3.2 is deenergized, so that the pressure oil enters the rod cavities of the first oil cylinder B1-2 and the second oil cylinder B1-2, and the pressure oil in the rodless cavities of the first oil cylinder B1-2 and the second oil cylinder B1-2 returns to the oil tank.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. A remote pressure regulating and pressure switching device of a metal packing hydraulic machine is characterized by comprising an oil pump (X), wherein an oil inlet of the oil pump (X) is communicated with an oil tank, and an oil outlet of the oil pump (X) is communicated with a liquid outlet pipeline (P); an inner cavity of the oil pump (X) is communicated with an electromagnetic directional valve (4.11), and the electromagnetic directional valve (4.11) is communicated with a high-pressure overflow valve (5.11) and a medium-pressure overflow valve (6.11); the liquid outlet pipeline (P) is communicated with an oil cylinder telescopic control mechanism and an oil cylinder stroke control mechanism; the oil cylinder expansion control mechanism comprises a first cartridge valve (1.1) and a second cartridge valve (1.2) which are communicated with the liquid outlet pipeline (P); the first cartridge valve (1.1) is communicated with a first electromagnetic valve (3.1), and the second cartridge valve (1.2) is communicated with a second electromagnetic valve (3.2); the second electromagnetic valve (3.2) is respectively communicated with the rod cavities of the first oil cylinder (B1-2) and the second oil cylinder (B1-2); the first electromagnetic valve (3.1) is communicated with the oil cylinder stroke control mechanism; the oil cylinder stroke control mechanism comprises a third cartridge valve (5.1) and a fourth cartridge valve (6.1) which are respectively communicated with the first electromagnetic valve (3.1); the third cartridge valve (5.1) is communicated with a rodless cavity of a first oil cylinder (B1-2) through a third electromagnetic valve (4.1); the fourth cartridge valve (6.1) is communicated with a rodless cavity of a second oil cylinder (B1-2) through a fourth electromagnetic valve (4.2); a first travel switch (SQ1) is arranged by matching with the first oil cylinder (B1-2), and the first travel switch (SQ1) is in communication connection with the third electromagnetic valve (4.1); and a second stroke switch (SQ2) is arranged by matching with the second oil cylinder (B1-2), and the second stroke switch (SQ2) is in communication connection with the fourth electromagnetic valve (4.2).
2. The remote pressure regulating and switching device of the metal packing hydraulic machine as claimed in claim 1, characterized in that the first cartridge valve (1.1) is communicated with a first pressure control cartridge valve (8.1), and the first pressure control cartridge valve (8.1) is communicated with a fifth electromagnetic valve (7.1), an oil return pipeline (T) and a first overflow valve (W1); the second cartridge valve (1.2) is communicated with a second pressure control cartridge valve (8.2), the second pressure control cartridge valve (8.2) is communicated with a sixth electromagnetic valve (7.2), an oil return pipeline (T) and a second overflow valve (W2), and the oil return pipeline (T) is communicated with an oil tank.
3. Remote pressure regulation and switching device for metal-packing hydraulic machines, according to claim 1, characterized in that the pressure setpoint of the high-pressure overflow valve (5.11) is 315 bar.
4. Remote pressure regulation and switching device for metal-packing hydraulic machines, according to claim 1, characterized in that the pressure set value of the medium-pressure overflow valve (6.11) is 200 bar.
5. Remote pressure regulation and switching device for metal-packing hydraulic machines, according to claim 1, characterized in that the electromagnetic directional valve (4.11) is also in communication with the oil tank.
6. A control method of a metal packing hydraulic press remote pressure regulating and pressure switching device is characterized by comprising the following steps:
the method comprises the steps that firstly, an oil pump (X) is controlled to be started remotely, a second electromagnetic valve (3.2) is powered on, so that a second cartridge valve (1.2) is closed to enter an oil way with rod cavities of a first oil cylinder (B1-2) and a second oil cylinder (B1-2), the first electromagnetic valve (3.1) is powered off, pressure oil enters a rodless cavity of the first oil cylinder (B1-2) and the second oil cylinder (B1-2), when one oil cylinder reaches a preset position first, the pressure oil is sensed by a corresponding travel switch, and therefore the corresponding electromagnetic valve is controlled to be powered on, the corresponding cartridge valve blocks the oil way, the oil cylinder pressure reaching the preset position first is cut off, and the oil cylinder position is locked; then the pressure oil is input into the other oil cylinder; when the first oil cylinder (B1-2) and the second oil cylinder (B1-2) both extend to the right position; the first electromagnetic valve (3.1) is electrified, the second electromagnetic valve (3.2) is powered off, so that pressure oil enters rod cavities of the first oil cylinder (B1-2) and the second oil cylinder (B1-2), and the pressure oil in rodless cavities of the first oil cylinder (B1-2) and the second oil cylinder (B1-2) returns to the oil tank;
step two, under the condition that the material is waiting for the packer, the electromagnetic directional valve is not powered, the valve core of the electromagnetic directional valve is positioned at the middle position, the oil pump is remotely controlled to control oil unloading, and the whole hydraulic system unloads, so that the energy loss and the heating are reduced; when high pressure needs to be output, the electromagnetic directional valve (4.11) is controlled to be communicated with a high-pressure overflow valve (5.11); when the medium pressure is required to be output, the electromagnetic directional valve (4.11) is controlled to be communicated with the medium pressure overflow valve (6.11) so as to output the medium pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210793110.2A CN115091805B (en) | 2022-07-07 | 2022-07-07 | Remote pressure regulating and switching device of metal packing hydraulic machine and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210793110.2A CN115091805B (en) | 2022-07-07 | 2022-07-07 | Remote pressure regulating and switching device of metal packing hydraulic machine and control method thereof |
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| CN115091805A true CN115091805A (en) | 2022-09-23 |
| CN115091805B CN115091805B (en) | 2024-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948310A (en) * | 2024-03-25 | 2024-04-30 | 四平市顺邦农机制造有限公司 | Hydraulic system, hydraulic method and switching method of straw feed bundling machine |
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| CN106895034A (en) * | 2017-04-19 | 2017-06-27 | 沈阳建筑大学 | A kind of asynchronous circulation jack-up system of Large Construction platform multi-hydraulic-cylinder elementary errors |
| CN113459558A (en) * | 2021-07-29 | 2021-10-01 | 陕西科技大学 | Bidirectional braking hydraulic machine and working method thereof |
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| US3187508A (en) * | 1964-06-29 | 1965-06-08 | Miehle Goss Dexter Inc | Hydraulic clamp system for guillotine cutters |
| US5520521A (en) * | 1991-08-17 | 1996-05-28 | Putzmeister-Werk Maschinenfabrik Gmbh | Hydraulic control device for a viscous fluid pump |
| JPH10279265A (en) * | 1997-04-08 | 1998-10-20 | Shin Caterpillar Mitsubishi Ltd | Gripping device hydraulic circuit for card handling machine |
| CN103062024A (en) * | 2012-12-26 | 2013-04-24 | 中联重科股份有限公司 | High-low-pressure switching method for double-cylinder pumping device, hydraulic control system of double-cylinder pumping device and device |
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| CN117948310A (en) * | 2024-03-25 | 2024-04-30 | 四平市顺邦农机制造有限公司 | Hydraulic system, hydraulic method and switching method of straw feed bundling machine |
| CN117948310B (en) * | 2024-03-25 | 2024-05-31 | 四平市顺邦农机制造有限公司 | Hydraulic system, hydraulic method and switching method of straw feed bundling machine |
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| CN115091805B (en) | 2024-01-05 |
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