CN216382015U - Control system of bending machine - Google Patents
Control system of bending machine Download PDFInfo
- Publication number
- CN216382015U CN216382015U CN202122562295.XU CN202122562295U CN216382015U CN 216382015 U CN216382015 U CN 216382015U CN 202122562295 U CN202122562295 U CN 202122562295U CN 216382015 U CN216382015 U CN 216382015U
- Authority
- CN
- China
- Prior art keywords
- oil
- way
- branch
- hydraulic cylinder
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a control system of a bending machine, which comprises an oil tank, a servo pump connected with the oil tank, a servo motor driving the servo pump, and a hydraulic cylinder connected with the oil tank through an oil way, wherein the oil way comprises: the first oil way is communicated with an oil inlet of the oil tank; the second oil way is communicated between the first oil way and the hydraulic cylinder, and a plurality of reversing valves for controlling the hydraulic cylinder to act are arranged on the second oil way; the first oil return way is communicated between the hydraulic cylinder and a first oil return opening of the oil tank; the second oil return path is communicated between the second oil path and a second oil return port of the oil tank; and the third oil way is connected with the second oil way in parallel, the third oil way is communicated between the first oil way and the second oil return way, and the third oil way is provided with an overflow valve which can control the hydraulic cylinder to perform inching operation together with the plurality of reversing valves on the second oil way in a working feeding state. The control system can control the action of the bending machine in the working process.
Description
Technical Field
The utility model relates to the field of bending machines, in particular to a control system of a bending machine.
Background
A bending machine is a machine capable of bending a plate, and realizes a function of bending a plate by a plurality of actions of a hydraulic cylinder. In the process of working in the existing bending machine, the running state of the hydraulic cylinder cannot be adjusted according to the requirement. Before the bending machine is used, trial bending must be carried out to ensure that the lower tool point meets the processing requirements of products in the process of tool feeding. The existing uncontrollable working process threatens the safety of operators when in trial folding, and easily causes the damage of molds and machines and the waste of materials. Therefore, how to solve the above problems is an urgent problem to be solved.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the utility model provides a control system of a bending machine, which can control the action of the bending machine in the working process, realize inching operation of a hydraulic cylinder, facilitate debugging in the trial bending process, reduce the damage of a mould and ensure the safety of an operator.
In order to achieve the purpose, the utility model adopts the technical scheme that: a control system of a bending machine comprises an oil tank, a servo pump connected with the oil tank, a servo motor driving the servo pump, and a hydraulic cylinder connected with the oil tank through an oil path, wherein the oil path comprises:
the first oil way is communicated with an oil inlet of the oil tank;
the second oil way is communicated between the first oil way and the hydraulic cylinder, and a plurality of reversing valves for controlling the hydraulic cylinder to act are arranged on the second oil way;
the first oil return way is communicated between the hydraulic cylinder and a first oil return opening of the oil tank;
the second oil return path is communicated between the second oil path and a second oil return port of the oil tank;
and the third oil way is connected with the second oil way in parallel, the third oil way is communicated between the first oil way and the second oil return way, an overflow valve is arranged on the third oil way, and the overflow valve and the plurality of reversing valves on the second oil way can jointly control the hydraulic cylinder to stop or run at a low speed in a working state.
In the technical scheme, the overflow valve is a two-position four-way reversing valve controlled by an electromagnetic valve YV 6.
In the above technical scheme, one end of the first oil return path is connected with the rodless cavity of the hydraulic cylinder, the other end of the first oil return path is connected with the first oil return port, and the first oil return path is provided with a liquid charging valve in a normally open state.
In the above technical solution, the second oil path includes a first branch, a second branch, a third branch and a fourth branch connected in parallel; the first branch and the second branch are connected with the first oil way through a three-position four-way reversing valve controlled by an electromagnetic valve YV4 and an electromagnetic valve YV3, the third branch is provided with a two-position four-way reversing valve controlled by an electromagnetic valve YV2, and the fourth branch is provided with a two-position two-way reversing valve controlled by an electromagnetic valve YV 5.
In the above technical solution, one end of the first branch is connected to the three-position four-way reversing valve, the other end of the first branch is connected to the rod chamber of the hydraulic cylinder, and a check valve controlled by an electromagnetic valve YV1 is further disposed on the first branch.
In the above technical scheme, one end of the second branch is connected to the three-position four-way reversing valve, and the other end of the second branch is connected to the rodless cavity of the hydraulic cylinder.
In the above technical solution, one end of the third branch is connected to the first oil path, and the other end of the third branch is connected to the rodless cavity of the hydraulic cylinder.
In the above technical solution, one end of the fourth branch is connected to the first oil path, and one end of the fourth branch is connected to a liquid filling valve on the first oil path.
In the above technical scheme, a safety valve is connected between the first oil path and the second oil return path, and the safety valve is connected with the overflow valve in parallel.
In the technical scheme, a plurality of pressure measuring points are further arranged in the oil way.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. according to the hydraulic control system, the third oil way is additionally arranged in the control system, the overflow valve is arranged on the third oil way, the overflow valve and the plurality of reversing valves in the second oil way act together, when the plurality of reversing valves in the second oil way control the hydraulic cylinder to perform work feeding movement, the overflow valve can enable hydraulic oil to return to the oil tank through the third oil way, so that the servo motor is in an idling state, and the hydraulic cylinder stops acting; and the servo motor is kept in the running state in the process, so that the overflow valve can be powered off at any time, the hydraulic cylinder recovers the working action, and the response sensitivity of the system is improved.
In order to make the aforementioned and other objects, features and advantages of the utility model comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a control system for a bending machine according to the present invention.
Reference numerals of the above figures: 1. an oil tank; 2. a servo pump; 3. a servo motor; 4. a hydraulic cylinder; 5. a first oil passage; 6. a second oil passage; 61. a first branch; 62. a second branch circuit; 63. a third branch; 64. a fourth branch; 7. a third oil passage; 8. a first oil return path; 9. a second oil return path; 10. a liquid charging valve; 11. an oil inlet; 12. a first oil return port; 13. and a second oil return port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1, a control system of a bending machine includes an oil tank 1, a servo pump 2 connected to the oil tank 1, a servo motor 3 driving the servo pump 2, and a hydraulic cylinder 4 connected to the oil tank 1 through oil paths, where the oil paths include a first oil path 5, a second oil path 6, a third oil path 7, a first oil return path 8, and a second oil return path 9. An oil inlet 11, a first oil return port 12 and a second oil return port 13 are arranged on the oil tank 1. The first oil path 5 is communicated with an oil inlet 11 of the oil tank 1. The second oil path 6 is communicated between the first oil path 5 and the hydraulic cylinder 4, and a plurality of reversing valves for controlling the hydraulic cylinder 4 to act are arranged on the second oil path 6. The first oil return passage 8 is communicated between the hydraulic cylinder 4 and a first oil return port 12 of the oil tank 1. The second oil return path 9 is communicated between the second oil path 6 and a second oil return port 13 of the oil tank 1. The third oil path 7 is connected in parallel with the second oil path 6, and the third oil path 7 is communicated between the first oil path 5 and the second oil return path 9. And an overflow valve is arranged on the third oil way 7, and the overflow valve and the plurality of reversing valves on the second oil way 6 can jointly control the hydraulic cylinder 4 to perform inching operation in a working feeding state.
When the hydraulic cylinders 4 are controlled to be in a working feed state by the reversing valves on the second oil path 6, the third oil path 7 is communicated through an overflow valve, so that hydraulic oil pumped out of the oil tank 1 flows back to the oil tank 1 through the third oil path 7, the servo motor 3 is in an idle state, the hydraulic cylinders 4 are controlled to stop working when in the working feed state, in the process, the servo motor 3 keeps in the idle running state, the oil paths keep in a liquid filling state, and the hydraulic cylinders 4 can recover from working feed at any time by disconnecting the third oil path 7, so that the reaction sensitivity of the system is improved.
Specifically, the overflow valve is a two-position four-way reversing valve controlled by an electromagnetic valve YV 6.
One end of the first oil return path 8 is connected with the rodless cavity of the hydraulic cylinder 4, the other end of the first oil return path is connected with the first oil return port 12, and the first oil return path 8 is provided with a liquid charging valve 10 in a normally open state.
Referring to fig. 1, the second oil path 6 includes a first branch path 61, a second branch path 62, a third branch path 63, and a fourth branch path 64 connected in parallel. The first branch 61 and the second branch 62 are connected with the first oil passage 5 through a three-position four-way reversing valve controlled by a solenoid valve YV4 and a solenoid valve YV 3. And a two-position four-way reversing valve controlled by an electromagnetic valve YV2 is arranged on the third branch 63. And a two-position two-way reversing valve controlled by an electromagnetic valve YV5 is arranged on the fourth branch 64. Specifically, one end of the first branch 61 is connected to the three-position four-way selector valve, the other end of the first branch is connected to the rod chamber of the hydraulic cylinder 4, and a check valve controlled by an electromagnetic valve YV1 is further disposed on the first branch 61. One end of the second branch 62 is connected to the three-position four-way selector valve, and the other end is connected to the rodless chamber of the hydraulic cylinder 4. One end of the third branch 63 is connected to the first oil passage 5, and the other end thereof is connected to the rodless chamber of the hydraulic cylinder 4. One end of the fourth branch 64 is connected to the first oil passage 5, and one end thereof is connected to the charge valve 10 on the first oil passage 8.
And a safety valve is also connected between the first oil way 5 and the second oil return way 9, and the safety valve is connected with the overflow valve in parallel.
And a plurality of pressure measuring points are also arranged in the oil way. For example, a pressure measurement point M for monitoring the pressure in the first oil passage 5, and pressure measurement points M1, M2 for monitoring the pressure in the second oil passage 6.
The working principle of the control system is as follows:
starting: the inner cylinder of the hydraulic cylinder 4 is at the upper end of the stroke, the electromagnetic valves YV1, YV2, YV3, YV4, YV5 and YV6 are not electrified and are in a closed state, and the inner cylinder of the hydraulic cylinder 4 is in a static state.
Quickly getting down: the electromagnetic valves YV1 and YV4 are electrified and in an electrified opening state. Hydraulic oil in the oil tank 1 enters a three-position four-way reversing valve controlled by YV4 through the oil inlet 11, at the moment, T is communicated with A in the reversing valve, P is communicated with B in the reversing valve, the hydraulic oil is communicated to B from P and enters a rodless cavity of the hydraulic cylinder 4, and the inner cylinder is pushed to move down quickly. Meanwhile, the hydraulic oil enters the one-way valve controlled by YV1 from the hydraulic cylinder 4 and enters the second oil return port 13 from A to T, and the rapid descending action is completed.
Feeding: the electromagnetic valves YV1, YV2, YV4 and YV5 are electrified and in an electrified opening state. The hydraulic oil in the oil tank 1 enters the second oil path 6 through the oil inlet 11 and flows in four branches of the second oil path 6. Hydraulic oil in the second branch 62 enters a three-position four-way reversing valve controlled by YV4, at the moment, T is communicated with A in the reversing valve, P is communicated with B in the reversing valve, and the hydraulic oil is communicated to B from P and enters a rodless cavity of the hydraulic cylinder 4 to push the inner cylinder to move downwards; in the first branch 61 the hydraulic oil from said cylinder 4 enters a one-way valve controlled by YV1 and passes from a to T into said second oil return 13; in the third branch 63, hydraulic oil enters a two-position four-way reversing valve controlled by YV2, and at the moment, the hydraulic oil enters a rodless cavity of the hydraulic cylinder 4 from a P channel B; in the fourth path, the hydraulic oil enters a two-position two-way reversing valve controlled by YV5, at the moment, the hydraulic oil enters the liquid filling valve 10 from the P to the B, and the inner cylinder is converted from the fast forward state to the working state.
Unloading: the solenoid valve YV4 is energized and in an energized open state. The hydraulic oil flows back from the hydraulic cylinder 4 to the three-position four-way reversing valve controlled by YV4, at the moment, P is communicated with B in the reversing valve, the hydraulic oil informs P from B and flows back to the oil inlet 11, the pressure of the inner cylinder of the hydraulic cylinder 4 is gradually reduced, and the action is unchanged.
And (3) returning: the solenoid valve YV3 is energized and in an energized open state. Hydraulic oil in the oil tank 1 enters a three-position four-way reversing valve controlled by YV3 through the oil inlet 11, at the moment, B in the reversing valve is communicated with T, A is communicated with P, the hydraulic oil is communicated with A from P and enters a rod cavity of the hydraulic cylinder 4 through a one-way valve controlled by YV1, the inner cylinder is pushed back upwards, then the hydraulic oil flows back from the rod cavity and enters a second oil return port 13 from B to T, and the hydraulic oil flows back to a first oil return port 12 from the rod cavity to a liquid charging valve 10, so that the return stroke action is realized.
Quick inching: the electromagnetic valves YV1, YV2, YV4, YV5 and YV6 are electrified and are in an electrified opening state. The hydraulic oil in the oil tank 1 enters the second oil path 6 through the oil inlet 11 and flows in four branches of the second oil path 6. Hydraulic oil in the second branch 62 enters a three-position four-way reversing valve controlled by YV4, at the moment, T is communicated with A in the reversing valve, P is communicated with B in the reversing valve, and the hydraulic oil is communicated to B from P and enters a rodless cavity of the hydraulic cylinder 4 to push the inner cylinder to move downwards; in the first branch 61 the hydraulic oil from said cylinder 4 enters a one-way valve controlled by YV1 and passes from a to T into said second oil return 13; in the third branch 63, hydraulic oil enters a two-position four-way reversing valve controlled by YV2, and at the moment, the hydraulic oil enters a rodless cavity of the hydraulic cylinder 4 from a P channel B; in the fourth path, the hydraulic oil enters a two-position two-way reversing valve controlled by YV5, at the moment, the hydraulic oil enters the liquid filling valve 10 from the P channel B, and the hydraulic cylinder 4 is in a working state. After the YV6 is electrified, hydraulic oil enters the two-position four-way valve controlled by the YV6 through the oil inlet 11, at the moment, the hydraulic oil flows back to the second oil return port 13 from the P channel B, so that the servo motor 3 is in an idling state, and the hydraulic cylinder 4 is controlled to stop working in a working state. When the hydraulic cylinder 4 stops operating, YV1, YV2, YV4 and YV5 are not electrified, and YV6 is electrified to keep the servo motor 3 in an idle running state, so that the hydraulic cylinder 4 can resume working operation at any time, and the response sensitivity of the system is improved.
The following is the control logic of the solenoid valve in the control system, wherein "+" means that the solenoid valve is energized, and "-" means that the solenoid valve is de-energized.
The principle and the implementation mode of the utility model are explained by applying specific embodiments in the utility model, and the description of the embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a control system of bender, includes the oil tank, with the servo pump that the oil tank links to each other, drive the servo motor of servo pump, through the oil circuit with the pneumatic cylinder that the oil tank links to each other, its characterized in that, the oil circuit includes:
the first oil way is communicated with an oil inlet of the oil tank;
the second oil way is communicated between the first oil way and the hydraulic cylinder, and a plurality of reversing valves for controlling the hydraulic cylinder to act are arranged on the second oil way;
the first oil return way is communicated between the hydraulic cylinder and a first oil return opening of the oil tank;
the second oil return path is communicated between the second oil path and a second oil return port of the oil tank;
and the third oil way is connected with the second oil way in parallel, the third oil way is communicated between the first oil way and the second oil return way, an overflow valve is arranged on the third oil way, and the overflow valve and the plurality of reversing valves on the second oil way can jointly control the hydraulic cylinder to perform inching operation in a working feeding state.
2. The control system of a bending machine according to claim 1, wherein: the overflow valve is a two-position four-way reversing valve controlled by an electromagnetic valve YV 6.
3. The control system of a bending machine according to claim 1, wherein: one end of the first oil return way is connected with the rodless cavity of the hydraulic cylinder, the other end of the first oil return way is connected with the first oil return port, and a liquid charging valve which is in a normally open state is arranged on the first oil return way.
4. The control system of a bending machine according to claim 1, wherein: the second oil way comprises a first branch, a second branch, a third branch and a fourth branch which are connected in parallel; the first branch and the second branch are connected with the first oil way through a three-position four-way reversing valve controlled by an electromagnetic valve YV4 and an electromagnetic valve YV3, the third branch is provided with a two-way four-way reversing valve controlled by an electromagnetic valve YV2, and the fourth branch is provided with a two-position two-way reversing valve controlled by an electromagnetic valve YV 5.
5. The control system of a bending machine according to claim 4, wherein: one end of the first branch is connected to the three-position four-way reversing valve, the other end of the first branch is connected to a rod cavity of the hydraulic cylinder, and a one-way valve controlled by an electromagnetic valve YV1 is further arranged on the first branch.
6. The control system of a bending machine according to claim 4, wherein: one end of the second branch is connected to the three-position four-way reversing valve, and the other end of the second branch is connected to the rodless cavity of the hydraulic cylinder.
7. The control system of a bending machine according to claim 4, wherein: one end of the third branch is connected to the first oil path, and the other end of the third branch is connected to the rodless cavity of the hydraulic cylinder.
8. The control system of a bending machine according to claim 4, wherein: one end of the fourth branch is connected to the first oil path, and one end of the fourth branch is connected to a liquid filling valve on the first oil return path.
9. The control system of a bending machine according to claim 1, wherein: and a safety valve is connected between the first oil way and the second oil return way and is connected with the overflow valve in parallel.
10. The control system of a bending machine according to claim 1, wherein: and a plurality of pressure measuring points are also arranged in the oil way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122562295.XU CN216382015U (en) | 2021-10-25 | 2021-10-25 | Control system of bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122562295.XU CN216382015U (en) | 2021-10-25 | 2021-10-25 | Control system of bending machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216382015U true CN216382015U (en) | 2022-04-26 |
Family
ID=81248499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122562295.XU Active CN216382015U (en) | 2021-10-25 | 2021-10-25 | Control system of bending machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216382015U (en) |
-
2021
- 2021-10-25 CN CN202122562295.XU patent/CN216382015U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102183918B (en) | Control system for servo numerical control bending machine | |
| CN107893784B (en) | Hydraulic system of multi-cylinder linkage hydraulic machine | |
| CN203917827U (en) | Automatic control system for hydraulic overturn pattern drawing machine | |
| CN201220490Y (en) | Full-closed loop servo control system of oil press | |
| CN103552276B (en) | Slide block control system of hydraulic machine | |
| CN201769389U (en) | Hydraulic press | |
| CN106837945A (en) | A kind of hydraulic safe electric control system | |
| CN106393767A (en) | Energy-saving hydraulic press | |
| CN103801751A (en) | Full-automatic plate shearing machine hydraulic system on basis of PLC control | |
| CN201396344Y (en) | Digital electro-hydraulic isochronous control system | |
| CN104416396A (en) | Hydraulic drive type clamping device | |
| CN107939751B (en) | Plate shearing method of hydraulic plate shearing machine | |
| CN104006015A (en) | Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine | |
| CN107756864B (en) | Hydraulic press | |
| CN105619875A (en) | High-speed hydraulic punching machine | |
| CN105041744A (en) | PLC control system and method of servo energy-saving control system of ceramic press | |
| CN105058833A (en) | Numerical control hydraulic machine | |
| CN216382015U (en) | Control system of bending machine | |
| CN104307953B (en) | A kind of multistage relief circuit for large-tonnage full-automatic hydraulic fine impact machine controls system | |
| CN203019708U (en) | Hydraulic control system | |
| CN101564893B (en) | Hydraulic drive unit for high-speed continuous hollow blow molding machine | |
| CN105782154A (en) | Hydraulic machining machine, hydraulic system thereof and control method of hydraulic system | |
| CN114001069A (en) | Hydraulic system of straightening machine and operation method thereof | |
| CN202116932U (en) | Hydraulic system of pulp package pressing machine | |
| CN203308817U (en) | Hydraulic control mechanism of broaching machine feeding and discharging mechanical hand system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |