CN219388281U - Mechanism with quick servo oil cylinder - Google Patents
Mechanism with quick servo oil cylinder Download PDFInfo
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- CN219388281U CN219388281U CN202320224894.7U CN202320224894U CN219388281U CN 219388281 U CN219388281 U CN 219388281U CN 202320224894 U CN202320224894 U CN 202320224894U CN 219388281 U CN219388281 U CN 219388281U
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Abstract
The utility model discloses a mechanism with a quick servo oil cylinder, and relates to the field of automatic series powder metallurgy equipment, wherein the mechanism with the quick servo oil cylinder comprises: an oil cylinder; the liquid filling valve is connected with the oil cylinder, and is used for supplementing and discharging oil when the oil cylinder moves in an idle-load rapid mode; the liquid filling oil tank is arranged above the liquid filling valve; the servo valve is connected with the oil cylinder and used for controlling the movement direction and speed of the oil cylinder; the hydraulic station is a hydraulic power source, one side of the hydraulic station is connected with the liquid filling oil tank, and the other side of the hydraulic station is connected with the servo valve. The technical scheme provided by the utility model does not reduce the working efficiency, reduces the production energy consumption, reduces the servo control difficulty, reduces the use of one servo valve, reduces the machining difficulty and cost of the oil cylinder, reduces the requirement of a press on the output flow of the oil pump of the hydraulic station, and further greatly improves the production benefit on the premise of meeting the requirement of stable production.
Description
Technical Field
The utility model relates to the field of automatic series powder metallurgy equipment, in particular to a mechanism with a quick servo oil cylinder.
Background
When the working tonnage is large, in order to improve the working efficiency of the powder metallurgy hydraulic servo press and reduce the energy consumption, a duplex oil cylinder is generally adopted at present and comprises a main cylinder and a secondary cylinder, wherein the main cylinder is used when the oil cylinder runs fully, and the secondary cylinder is used when the oil cylinder runs empty. At no load and full load, the switching between the master cylinder operation, the slave cylinder operation and the master and slave cylinder operation is controlled by two servo valves, respectively. Compared with the traditional single cylinder, the duplex cylinder technology improves the working efficiency and reduces part of energy consumption, but the difficulty of servo control is increased, the two servo valves are required to be matched with each other, and in addition, the difficulty and the cost are increased in the aspect of machining of the duplex cylinder.
Accordingly, those skilled in the art have been working to develop a mechanism with a quick servo cylinder that solves the above-mentioned problems of the prior art.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present utility model solves the technical problem of how to reduce the energy consumption of production and the difficulty of servo control, and reduce the requirement of the hydraulic servo press on the output flow of the oil pump of the hydraulic station, thereby improving the production benefit, without reducing the working efficiency on the premise of satisfying stable production.
In order to achieve the above object, the present utility model provides a mechanism with a fast servo cylinder, comprising:
an oil cylinder;
the liquid filling valve is connected with the oil cylinder, and is used for supplementing and discharging oil when the oil cylinder moves in an idle-load rapid mode;
the liquid filling oil tank is arranged above the liquid filling valve;
the servo valve is connected with the oil cylinder and used for controlling the movement direction and speed of the oil cylinder;
the hydraulic station is a hydraulic power source, one side of the hydraulic station is connected with the liquid filling oil tank, and the other side of the hydraulic station is connected with the servo valve;
the oil cylinder comprises an upper cylinder cover, a cylinder barrel, a lower cylinder cover and a piston;
wherein, the liquid crystal display device comprises a liquid crystal display device,
the cylinder barrel is internally provided with a sliding channel in the vertical direction, and the piston capable of moving up and down along the sliding channel is arranged in the cylinder barrel;
the upper cylinder cover is positioned at the upper part of the cylinder barrel and encloses an operation upper cavity together with the cylinder barrel and the piston;
the lower cylinder cover is positioned at the lower part of the cylinder barrel and encloses a running lower cavity together with the cylinder barrel and the piston.
Further, a first oil port and a second oil port are formed in the upper cylinder cover.
Further, one end of the first oil port is connected with the filling valve, and the other end of the first oil port is connected with the running upper cavity; when the oil cylinder descends rapidly, replenishing oil from the liquid filling oil tank to the upper running cavity through the first oil port; when the oil cylinder rises rapidly, oil is discharged from the operation upper cavity to the liquid filling oil tank through the first oil port; when the oil cylinder is fully loaded and slowly descends, the liquid filling valve is in a closed state, so that the upper running cavity of the oil cylinder forms high pressure, and pressure required for pressing products is generated.
Further, one end of the second oil port is connected with the servo valve, and the other end of the second oil port is connected with the operation upper cavity; when the oil cylinder descends rapidly, high-pressure oil flowing out of the hydraulic station enters the upper running cavity through the second oil port; when the oil cylinder descends slowly, high-pressure oil flowing out of the hydraulic station enters the upper running cavity through the second oil port; and when the oil cylinder rises rapidly, discharging oil from the operation upper cavity to the hydraulic station through the second oil port.
Further, a third oil port is formed in one side of the cylinder barrel;
one end of the third oil port is connected with the servo valve, and the other end of the third oil port is connected with the operation lower cavity; when the oil cylinder descends rapidly, low-pressure oil flowing out of the operation lower cavity enters the hydraulic station through the third oil port; when the oil cylinder descends slowly, low-pressure oil flowing out of the operation lower cavity enters the hydraulic station through the third oil port; when the oil cylinder rises rapidly, high-pressure oil flowing out of the hydraulic station enters the operation lower cavity through the third oil port.
Further, the oil passage capacity of the selected charge valve satisfies the flow rate required for rapid movement of the operating upper chamber.
Further, the charge tank is as close to the charge valve as possible.
Further, a large-diameter oil pipe is connected to the hydraulic station above the liquid filling oil tank so as to prevent the liquid filling oil tank from overflowing fully.
The mechanism with the quick servo oil cylinder has at least the following technical effects:
1. compared with the duplex oil cylinder, the oil cylinder in the technical scheme provided by the utility model has the running states of no-load quick rise and fall and full-load slow fall on the premise of meeting stable production, the working efficiency is not reduced, the requirement of the oil cylinder for high-pressure oil during running is reduced, and the requirement of a hydraulic servo press for the output flow of the oil pump of the hydraulic station is reduced, so that the oil pump with relatively smaller output flow can be selected, and the use of a large-drift-diameter high-precision servo valve is reduced;
2. in the servo control layer, the oil cylinder in the technical scheme provided by the utility model does not need to switch the fast operation and the slow operation back and forth in the control of the two servo valves when in operation, thereby greatly reducing the control difficulty of the hydraulic servo press;
3. compared with the oil cylinder in the technical scheme provided by the utility model, the duplex oil cylinder has a much more complex structure and more components, and is time-consuming, material-consuming and labor-consuming to process.
In summary, the technical scheme provided by the utility model does not reduce the working efficiency on the premise of meeting stable production, but reduces the production energy consumption, reduces the servo control difficulty, reduces the use of one servo valve, reduces the machining difficulty and cost of the oil cylinder, reduces the requirement of a press on the output flow of the oil pump of the hydraulic station, and further greatly improves the production benefit.
The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.
Drawings
FIG. 1 is a schematic diagram of the working principle of a duplex cylinder;
fig. 2 is a schematic diagram of the working principle of the oil cylinder mechanism according to a preferred embodiment of the present utility model.
Detailed Description
The following description of the preferred embodiments of the present utility model refers to the accompanying drawings, which make the technical contents thereof more clear and easy to understand. The present utility model may be embodied in many different forms of embodiments and the scope of the present utility model is not limited to only the embodiments described herein.
In the drawings, like structural elements are referred to by like reference numerals and components having similar structure or function are referred to by like reference numerals. The dimensions and thickness of each component shown in the drawings are arbitrarily shown, and the present utility model is not limited to the dimensions and thickness of each component. The thickness of the components is exaggerated in some places in the drawings for clarity of illustration.
Fig. 1 is a schematic diagram of the working principle of the duplex cylinder. The duplex oil cylinder is divided into a main cylinder and an auxiliary cylinder, wherein the main cylinder: when the oil cylinder runs at a slow speed under full load, the auxiliary cylinder is used: the oil cylinder is used when the oil cylinder runs fast in idle load. At no load and full load, the two servo valves are used to control the switching between the master cylinder operation, the slave cylinder operation and the master and slave cylinder operation, respectively. There are four different operating states, respectively: an empty fast running upper chamber (fast descending working chamber), an empty fast running lower chamber (fast ascending working chamber), a full load slow running upper chamber (slow descending working chamber) and a full load slow running lower chamber (slow ascending working chamber).
Fig. 2 is a schematic diagram of the working principle of a mechanism with a fast servo cylinder. Compared to the duplex cylinder shown in fig. 1, the mechanism with the fast servo cylinder shown in fig. 2 eliminates the full load slow running lower chamber (slow rise working chamber) because the inventors of the present application found that the cylinder is hardly used to rise slowly in production according to the practice of the actual working process. In addition, the inventors have incorporated an empty fast running upper chamber (fast descent working chamber) and a full slow running upper chamber (slow descent working chamber).
Specifically, a mechanism with a fast servo cylinder is shown in fig. 2, comprising:
an oil cylinder;
the liquid filling valve is connected with the oil cylinder and is used for supplementing and discharging oil when the oil cylinder moves in an idle-load and rapid mode;
the liquid filling oil tank is arranged above the liquid filling valve;
the servo valve is connected with the oil cylinder and used for controlling the movement direction and speed of the oil cylinder;
the hydraulic station is a hydraulic power source, one side of the hydraulic station is connected with the liquid filling oil tank, and the other side of the hydraulic station is connected with the servo valve.
The charging tank is a transitional tank between the charging valve and the hydraulic station.
The oil cylinder comprises an upper cylinder cover 1, a cylinder barrel 2, a lower cylinder cover 3 and a piston 4.
The cylinder barrel 2 is internally provided with a sliding channel in the vertical direction, and a piston 4 capable of moving up and down along the sliding channel is arranged in the cylinder barrel;
the upper cylinder cover 1 is positioned at the upper part of the cylinder barrel 2 and forms an upper running cavity together with the cylinder barrel 2 and the piston 4;
the lower cylinder cover 3 is positioned at the lower part of the cylinder barrel 2 and encloses a running lower cavity together with the cylinder barrel 2 and the piston 4.
When the oil cylinder descends rapidly, the high-pressure oil flow passing through the oil inlet of the servo valve is insufficient to meet the flow required by the rapid descending of the upper cavity of the oil cylinder, at the moment, the filling valve is opened, and the lacking flow can be rapidly supplemented to the oil cylinder from the filling oil tank through the filling valve. When the oil cylinder descends slowly, the flow of high-pressure oil passing through the oil inlet of the servo valve meets the flow required by the slow descent of the oil cylinder, and at the moment, the liquid filling valve is closed, so that the pressure in the cavity reaches the pressure required by pressing. The oil return port of the servo valve meets the low-pressure oil flow of the fast movement and certainly meets the low-pressure oil flow of the slow movement. Because the full-load slow-speed lifting is not needed, the acting area of a lifting cavity is greatly reduced in the design of the oil cylinder. When the oil cylinder rises rapidly, the flow of high-pressure oil passing through the oil inlet of the servo valve meets the flow required by rapid movement of the lower cavity of the oil cylinder, but because the unit area of the upper cavity of the oil cylinder is large, the oil flow of low-pressure oil passing through the oil return port of the upper cavity of the oil cylinder connected with the servo valve is insufficient to meet the flow required by rapid rising of the oil cylinder, at the moment, the liquid filling valve is opened, and redundant low-pressure oil is returned to the liquid filling oil tank rapidly through the liquid filling valve.
Specifically, a first oil port is formed in the upper cylinder cover 1;
one end of the first oil port is connected with the liquid filling valve, and the other end of the first oil port is connected with the running upper cavity; when the oil cylinder descends rapidly, oil is replenished from the liquid filling oil tank to the upper running cavity through the first oil port; when the oil cylinder rises rapidly, oil is discharged from the operation upper cavity to the liquid filling oil tank through the first oil port.
The upper cylinder cover is provided with a second oil port;
one end of the second oil port is connected with the servo valve, and the other end of the second oil port is connected with the operation upper cavity; when the oil cylinder descends rapidly, high-pressure oil flowing out of the hydraulic station enters the upper running cavity through the second oil port; when the oil cylinder descends slowly, high-pressure oil flowing out of the hydraulic station enters the upper running cavity through the second oil port; when the oil cylinder rises rapidly, oil is discharged from the operation upper cavity to the hydraulic station through the second oil port.
A third oil port is formed in one side of the cylinder barrel 2;
one end of the third oil port is connected with the servo valve, and the other end of the third oil port is connected with the operation lower cavity; when the oil cylinder descends rapidly, low-pressure oil flowing out of the operation lower cavity enters the hydraulic station through the third oil port; when the oil cylinder descends slowly, low-pressure oil flowing out of the operation lower cavity enters the hydraulic station through the third oil port; when the oil cylinder rises rapidly, high-pressure oil flowing out of the hydraulic station enters the operation lower cavity through the third oil port.
The oil-passing capacity of the selected filling valve meets the flow required by the rapid movement of the upper cavity.
The liquid filling oil tank is as close to the liquid filling valve as possible, so that the response speed of the liquid filling valve for filling and discharging oil is high. A large-diameter oil pipe is connected to the upper part of the liquid filling oil tank and connected to the hydraulic station so as to avoid overflow of the liquid filling oil tank.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. A mechanism having a fast servo cylinder, comprising:
an oil cylinder;
the liquid filling valve is connected with the oil cylinder, and is used for supplementing and discharging oil when the oil cylinder moves in an idle-load rapid mode;
the liquid filling oil tank is arranged above the liquid filling valve;
the servo valve is connected with the oil cylinder and used for controlling the movement direction and speed of the oil cylinder;
the hydraulic station is a hydraulic power source, one side of the hydraulic station is connected with the liquid filling oil tank, and the other side of the hydraulic station is connected with the servo valve;
the oil cylinder comprises an upper cylinder cover, a cylinder barrel, a lower cylinder cover and a piston;
wherein, the liquid crystal display device comprises a liquid crystal display device,
the cylinder barrel is internally provided with a sliding channel in the vertical direction, and the piston capable of moving up and down along the sliding channel is arranged in the cylinder barrel;
the upper cylinder cover is positioned at the upper part of the cylinder barrel and encloses an operation upper cavity together with the cylinder barrel and the piston;
the lower cylinder cover is positioned at the lower part of the cylinder barrel and encloses a running lower cavity together with the cylinder barrel and the piston.
2. The mechanism with a quick servo cylinder as recited in claim 1, wherein said upper cylinder head is provided with a first port and a second port.
3. The mechanism with a quick servo cylinder as recited in claim 2, wherein one end of said first port is connected to said charge valve and the other end is connected to said upper run chamber; when the oil cylinder descends rapidly, replenishing oil from the liquid filling oil tank to the upper running cavity through the first oil port; when the oil cylinder rises rapidly, oil is discharged from the operation upper cavity to the liquid filling oil tank through the first oil port; when the oil cylinder is fully loaded and slowly descends, the liquid filling valve is in a closed state, so that the upper running cavity of the oil cylinder forms high pressure, and pressure required for pressing products is generated.
4. The mechanism with a quick servo cylinder as recited in claim 2, wherein one end of said second port is connected to said servo valve and the other end is connected to said upper run chamber; when the oil cylinder descends rapidly, high-pressure oil flowing out of the hydraulic station enters the upper running cavity through the second oil port; when the oil cylinder descends slowly, high-pressure oil flowing out of the hydraulic station enters the upper running cavity through the second oil port; and when the oil cylinder rises rapidly, discharging oil from the operation upper cavity to the hydraulic station through the second oil port.
5. The mechanism with the quick servo cylinder as set forth in claim 2, wherein a third oil port is provided at one side of the cylinder;
one end of the third oil port is connected with the servo valve, and the other end of the third oil port is connected with the operation lower cavity; when the oil cylinder descends rapidly, low-pressure oil flowing out of the operation lower cavity enters the hydraulic station through the third oil port; when the oil cylinder descends slowly, low-pressure oil flowing out of the operation lower cavity enters the hydraulic station through the third oil port; when the oil cylinder rises rapidly, high-pressure oil flowing out of the hydraulic station enters the operation lower cavity through the third oil port.
6. The mechanism with a quick servo cylinder as recited in claim 2, wherein the charge valve is selected to have a charge capacity that meets a flow rate required for said quick travel of said upper operating chamber.
7. The mechanism with a quick service cylinder as recited in claim 1 wherein said charge tank is as close as possible to said charge valve.
8. The mechanism with a quick servo cylinder as recited in claim 1, wherein a large diameter oil line is connected to said hydraulic station above said charge tank to prevent oil from filling said charge tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320224894.7U CN219388281U (en) | 2023-02-09 | 2023-02-09 | Mechanism with quick servo oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320224894.7U CN219388281U (en) | 2023-02-09 | 2023-02-09 | Mechanism with quick servo oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219388281U true CN219388281U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320224894.7U Active CN219388281U (en) | 2023-02-09 | 2023-02-09 | Mechanism with quick servo oil cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN219388281U (en) |
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- 2023-02-09 CN CN202320224894.7U patent/CN219388281U/en active Active
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