CN209886544U - Pressure maintaining mechanism for hydraulic oil cylinder of press machine - Google Patents
Pressure maintaining mechanism for hydraulic oil cylinder of press machine Download PDFInfo
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- CN209886544U CN209886544U CN201920594823.XU CN201920594823U CN209886544U CN 209886544 U CN209886544 U CN 209886544U CN 201920594823 U CN201920594823 U CN 201920594823U CN 209886544 U CN209886544 U CN 209886544U
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- oil cylinder
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- press
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Abstract
The utility model discloses a press hydraulic cylinder pressure maintaining mechanism in the press field, which comprises a machine tool, wherein an oil cylinder is arranged on the machine tool, the oil cylinder is connected with a pneumatic pump, a pressure sensor is arranged on the oil cylinder, a check valve and a solenoid valve are arranged between the oil cylinder and the pneumatic pump, and the check valve and the solenoid valve are connected in parallel; when the pressure sensor detects that the pressure value in the hydraulic oil cylinder is smaller than the lower limit of the set value, transmitting a signal to a pneumatic pump for pressure compensation, and stabilizing the pressure by a one-way valve after the pressure is compensated; when the pressure sensor detects that the pressure value in the hydraulic oil cylinder is larger than the upper limit of a set value, a signal is transmitted to the electromagnetic valve and a machine tool control loop, the sliding block is immediately braked, the oil cylinder is unloaded, the requirement of overload protection is still met, and the quality of a stamping part is ensured by low-pressure monitoring; realize the pressurize function through increasing solenoid valve, check valve, pressure sensor, simple structure, processing convenient assembling, it is easy and simple to handle, the utility model discloses can be used to the pressurize of press.
Description
Technical Field
The utility model relates to a pressurize mechanism belongs to press technical field.
Background
The press machine adopts a hydraulic overload protector as a pressure overload protection device, a pneumatic pump is one of main hydraulic overload protection devices of the press machine, the pneumatic pump is powered by compressed air and realizes pressurization by the area difference of two pistons, the press machine is ensured to normally work within the range not larger than the nominal force, and once the stress of a slide block exceeds the nominal pressure of the press machine, the overload protection device is immediately unloaded, so that the main parts of the press machine are ensured not to be damaged; the hydraulic cylinder is another component of the main hydraulic overload protection device of the press, and is a carrier for bearing the ball rod and the sliding block, and when the machine tool works normally, the hydraulic cylinder is filled with oil liquid, so that no gap exists between the ball rod and the sliding block. When the slide block is stressed to exceed the nominal pressure of the press machine, the overload protection device unloads immediately, oil in the hydraulic cylinder is removed, and a gap exists between the ball rod and the slide block, so that the main parts are prevented from being damaged. However, the pressure fluctuation in the hydraulic oil cylinder is a quality key factor influencing the punching of the press, but the press in the prior art does not have a mechanism capable of effectively controlling the pressure fluctuation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a press hydraulic cylinder pressurize mechanism realizes the pressurize function through increasing solenoid valve, check valve, pressure sensor, simple structure, processing convenient assembling, and is easy and simple to handle.
In order to achieve the above object, the utility model provides a press hydraulic cylinder pressurize mechanism, which comprises a machine tool, be provided with the hydro-cylinder on the lathe, the hydro-cylinder links to each other with the air pump, install pressure sensor on the hydro-cylinder, install check valve and solenoid valve between hydro-cylinder and the air pump, check valve and solenoid valve parallel connection.
Compared with the prior art, the utility model has the advantages that when the pressure sensor detects that the pressure value in the hydraulic oil cylinder is less than the lower limit of the set value, the pressure sensor transmits a signal to supplement the pressure for the pneumatic pump, and the pressure is stabilized by the one-way valve after the pressure is supplemented; when the pressure sensor detects that the pressure value in the hydraulic oil cylinder is larger than the upper limit of a set value, a signal is transmitted to the electromagnetic valve and a machine tool control loop, the sliding block is immediately braked, the oil cylinder is unloaded, the requirement of overload protection is still met, and the quality of a stamping part is ensured by low-pressure monitoring; realize the pressurize function through increasing solenoid valve, check valve, pressure sensor, simple structure, processing convenient assembling, it is easy and simple to handle, the utility model discloses can be used to the pressurize of press.
As the utility model discloses a further improvement, pressure sensor's upper limit value is 105% of lathe punching press tonnage, and the lower limit value is 100% of lathe punching press tonnage, can guarantee like this that the press can have stable pressure value to the pressure fluctuation obtains effectual control, further ensures the pressurize effect of press, makes the defective percentage descend.
As the utility model discloses a further improvement, check valve and solenoid valve are close to the hydro-cylinder setting, can make the information of sensor transmit check valve and solenoid valve for more accurate fast like this for the pressurize precision is higher.
As a further improvement, the check valve and the solenoid valve are connected with the oil cylinder through the hard oil pipe, so that the pressure supplemented by the pneumatic pump can be better borne, and the service life is prolonged.
As the utility model discloses a further improvement, the solenoid valve is in normally closed state, because the solenoid valve needs the longer time to be in closed state, and close time is greater than open time moreover to the time of continuously opening is not long, chooses for use normally closed state's solenoid valve more practical.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic connection diagram of the present invention.
The device comprises a machine tool 1, a ball rod 2, a sliding block 3, an oil cylinder 4, a hard oil pipe 5, a pneumatic pump 6, a pressure sensor 7, an electromagnetic valve 8 and a one-way valve 9.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
1-2, including lathe 1, be provided with hydro-cylinder 4 on the lathe 1, hydro-cylinder 4 links to each other its characterized in that with pneumatic pump 6: the oil cylinder 4 is provided with a pressure sensor 7, a one-way valve 9 and an electromagnetic valve 8 are arranged between the oil cylinder 4 and the pneumatic pump, and the one-way valve 9 and the electromagnetic valve 8 are connected in parallel; the upper limit value of the pressure sensor 7 is 105% of the punching tonnage of the machine tool 1, and the lower limit value is 100% of the punching tonnage of the machine tool 1; the one-way valve 9 and the electromagnetic valve 8 are arranged close to the oil cylinder 4; the one-way valve 9 and the electromagnetic valve 8 are connected with the oil cylinder 4 through the hard oil pipe 5; the solenoid valve 8 is in a normally closed state.
When the pneumatic hydraulic cylinder pressure regulating device works, the pressure sensor 7 is installed in the hydraulic cylinder 4, the upper limit and the lower limit of the pressure value are set, the upper limit is 105% of the stamping tonnage of the machine tool 1, the lower limit is 100% of the stamping tonnage of the machine tool 1, the electromagnetic valve 8 and the one-way valve 9 are connected in series between the pneumatic pump 6 and the hydraulic cylinder 4, the electromagnetic valve 8 is connected in parallel, the electromagnetic valve 8 is in a normally closed state, the pneumatic hydraulic cylinder pressure regulating device can work after the electromagnetic valve 8 is powered on, when the pressure sensor 7 detects that the pressure value in the hydraulic cylinder 4 is smaller than the lower limit of a set value, a signal is transmitted to the pneumatic pump 6; when the pressure sensor 7 detects that the pressure value in the hydraulic oil cylinder 4 is larger than the upper limit of a set value, a signal is transmitted to the electromagnetic valve 8 and a control loop of the machine tool 1, the slide block 3 is immediately braked, the oil cylinder 4 is unloaded, the requirement of overload protection is still met, and the quality of a stamping part is ensured by low-pressure monitoring; when the machine tool 1 works normally, the hydraulic cylinder is filled with oil, so that no gap exists between the ball rod 2 and the sliding block 3, when the stress of the sliding block 3 exceeds the nominal pressure of the press machine, the overload protection device unloads immediately, the oil in the hydraulic cylinder is removed, and a gap exists between the ball rod 2 and the sliding block 3, so that the damage of main parts is avoided; the pressure maintaining function is realized by adding the electromagnetic valve 8, the one-way valve 9 and the pressure sensor 7, the structure is simple, the processing and the assembly are convenient, and the operation is simple and convenient.
The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art can make some substitutions and transformations to some technical features without creative labor according to the disclosed technical contents, and these substitutions and transformations are all within the protection scope of the present invention.
Claims (5)
1. The utility model provides a press hydraulic cylinder pressurize mechanism, includes the lathe, be provided with the hydro-cylinder on the lathe, the hydro-cylinder links to each other its characterized in that with pneumatic pump: the pneumatic pump is characterized in that a pressure sensor is installed on the oil cylinder, a check valve and an electromagnetic valve are installed between the oil cylinder and the pneumatic pump, and the check valve and the electromagnetic valve are connected in parallel.
2. The hydraulic ram pressure maintaining mechanism of the press machine according to claim 1, characterized in that: the upper limit value of the pressure sensor is 105% of the punching tonnage of the machine tool, and the lower limit value of the pressure sensor is 100% of the punching tonnage of the machine tool.
3. The hydraulic ram pressure maintaining mechanism of the press machine according to claim 2, characterized in that: the one-way valve and the electromagnetic valve are arranged close to the oil cylinder.
4. The hydraulic ram pressure maintaining mechanism of the press machine according to any one of claims 1 to 3, characterized in that: the one-way valve and the electromagnetic valve are connected with the oil cylinder through a hard oil pipe.
5. The hydraulic ram pressure maintaining mechanism of the press machine according to any one of claims 1 to 3, characterized in that: the electromagnetic valve is in a normally closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594823.XU CN209886544U (en) | 2019-04-28 | 2019-04-28 | Pressure maintaining mechanism for hydraulic oil cylinder of press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594823.XU CN209886544U (en) | 2019-04-28 | 2019-04-28 | Pressure maintaining mechanism for hydraulic oil cylinder of press machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209886544U true CN209886544U (en) | 2020-01-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920594823.XU Expired - Fee Related CN209886544U (en) | 2019-04-28 | 2019-04-28 | Pressure maintaining mechanism for hydraulic oil cylinder of press machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209886544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113247766A (en) * | 2021-06-18 | 2021-08-13 | 河南齐华起重机科技研发有限公司 | Novel hydraulic self-locking anti-climbing device |
| CN115635729A (en) * | 2022-11-18 | 2023-01-24 | 江苏省徐州锻压机床厂集团有限公司 | Press machine for stamping process |
-
2019
- 2019-04-28 CN CN201920594823.XU patent/CN209886544U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113247766A (en) * | 2021-06-18 | 2021-08-13 | 河南齐华起重机科技研发有限公司 | Novel hydraulic self-locking anti-climbing device |
| CN115635729A (en) * | 2022-11-18 | 2023-01-24 | 江苏省徐州锻压机床厂集团有限公司 | Press machine for stamping process |
| CN115635729B (en) * | 2022-11-18 | 2023-08-18 | 江苏省徐州锻压机床厂集团有限公司 | Press for stamping process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 |