CN111608968B - Electro-hydraulic proportional position synchronous control system for bending machine - Google Patents
Electro-hydraulic proportional position synchronous control system for bending machine Download PDFInfo
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- CN111608968B CN111608968B CN202010487342.6A CN202010487342A CN111608968B CN 111608968 B CN111608968 B CN 111608968B CN 202010487342 A CN202010487342 A CN 202010487342A CN 111608968 B CN111608968 B CN 111608968B
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- way electromagnetic
- directional valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/22—Auxiliary equipment, e.g. positioning devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The utility model provides an electricity liquid proportion position synchro control system for bender, by the oil tank, the filter, the constant delivery pump, the overflow valve, the choke valve, central tribit four-way electromagnetic directional valve, the cartridge valve, two-position two-way electromagnetic directional valve, two-position three-way electromagnetic directional valve, signal amplifier, the pilot operated check valve, the pneumatic cylinder, the connecting line between three-position four-way electromagnetic proportional directional valve and each component constitutes, through bender electricity liquid proportion position synchro control system, realized the quick-down, slow-down, the worker of computer control bender, the synchronous control of release, the return stroke process, the advantage lies in simple structure, the appearance is small, the operation control is accurate simple, the efficiency of work has been improved greatly and the manufacturing cost has been subductd, through computer remote control, the potential safety hazard that operating personnel manual operation brought has been solved.
Description
Technical Field
The invention relates to an electro-hydraulic proportional position synchronous control system, in particular to an electro-hydraulic proportional position synchronous control system for a bending machine.
Background
The bending machine is a precise general device for bending and forming metal plates, and is widely applied to various fields. At present, most bending machines in China mainly adopt modes such as torsion shaft synchronous stop block positioning and machine-liquid synchronous stop block positioning to carry out synchronous control, and the defects of the bending machines are that hydraulic cylinders are slow in response, not beneficial to control, hydraulic transmission is adopted, the structure is complex, and the use and maintenance cost is high. From the effect of using, because can not adopt remote control, under some dangerous operating mode, need personnel's manual regulation, brought the potential safety hazard for operating personnel's work.
Disclosure of Invention
Technical problem to be solved
The invention provides an electro-hydraulic proportional position synchronous control system, which adopts the combination of a proportional cartridge valve and an integrated hydraulic control system and solves the problems of low precision, complex structure, high failure rate, large hydraulic impact, inconvenient maintenance, potential safety hazard and the like caused by incapability of remote control of a bending machine through computer control.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an electro-hydraulic proportional position synchronous control system for a bending machine comprises an oil tank, a filter, a proportioning pump, an overflow valve, a throttle valve, a central three-position four-way electromagnetic directional valve, a cartridge valve, a two-position two-way electromagnetic directional valve, a first two-position three-way electromagnetic directional valve, a second two-position three-way electromagnetic directional valve, a first signal amplifier, a second signal amplifier, a third signal amplifier, a hydraulic control one-way valve, an overflow valve, a one-way valve, a first hydraulic cylinder, a second hydraulic cylinder, a first hydraulic control one-way valve, a second hydraulic control one-way valve, a first three-position four-way electromagnetic proportional directional valve, a second three-position four-way electromagnetic proportional directional valve, a first position sensor and a second position sensor, wherein the proportioning pump is connected with the oil tank through the filter, the other end of the proportioning pump is respectively connected with the overflow valve and the central three-position four-way electromagnetic directional valve, and the central three-position four-way electromagnetic directional valve is respectively connected with the first three-position four-way electromagnetic proportional directional valve, The second three-position four-way electromagnetic proportional reversing valve is connected with the cartridge valve, the cartridge valve is connected with the two-position two-way electromagnetic reversing valve, the first three-position four-way electromagnetic proportional reversing valve is connected with the second three-position four-way electromagnetic proportional reversing valve, the first three-position four-way electromagnetic proportional reversing valve is respectively connected with the rodless cavity of the first hydraulic cylinder and the first hydraulic control one-way valve, the second three-position four-way electromagnetic proportional reversing valve is respectively connected with the rodless cavity of the second hydraulic cylinder and the second hydraulic control one-way valve, the first hydraulic cylinder and the second hydraulic cylinder are connected with each other and are respectively connected with the overflow valve, one side of the overflow valve is connected with the one-way valve in parallel, and the other end of the overflow valve is respectively connected with the first three-position four-way electromagnetic proportional reversing valve and the second three-position four-way electromagnetic proportional reversing valve through the hydraulic control one-way valve, no. one tribit four-way electromagnetic proportional directional valve passes through a fortune is put, No. two fortune put with on the pneumatic cylinder piston rod a position sensor links to each other, No. two tribit four-way electromagnetic proportional directional valve pass through No. three fortune put with No. two position sensor on the pneumatic cylinder piston rod two links to each other, a liquid accuse check valve with No. two liquid accuse check valve passes through respectively No. two three-way electromagnetic directional valve with the constant delivery pump is connected, the liquid accuse check valve pass through No. one two three-way electromagnetic directional valve with the constant delivery pump is connected.
Furthermore, the central three-position four-way electromagnetic directional valve is connected with the throttle valve through a pipeline.
Furthermore, the first hydraulic cylinder is connected to the upper oil tank through a first hydraulic control one-way valve; the second hydraulic cylinder is connected to the upper oil tank through a second hydraulic control one-way valve.
Furthermore, the oil outlets of the first three-position four-way electromagnetic proportional reversing valve and the second three-position four-way electromagnetic proportional reversing valve which are connected in parallel are connected with the central three-position four-way electromagnetic reversing valve.
Furthermore, the central three-position four-way electromagnetic directional valve is connected with the cartridge valve, and the cartridge valve is connected with the two-position two-way electromagnetic directional valve.
(III) advantageous effects
The invention provides an electro-hydraulic proportional position synchronous control system for a bending machine, which has the advantages of simple structure, small appearance volume, accurate and simple operation control, greatly improved working efficiency and reduced production cost. Through computer remote control, the potential safety hazard brought by manual operation of operators is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram of a bender station operation;
FIG. 2 is a schematic structural view of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
the hydraulic control system comprises an oil tank 1, a filter 2, a dosing pump 3, an overflow valve 4, a throttle valve 5, a central three-position four-way electromagnetic directional valve 6, a cartridge valve 7, a two-position two-way electromagnetic directional valve 8, a first two-position three-way electromagnetic directional valve 9-1, a second two-position three-way electromagnetic directional valve 9-2, a first signal amplifier 10-1, a second signal amplifier 10-2, a third signal amplifier 10-3, a hydraulic control one-way valve 11, an overflow valve 12, a one-way valve 13, a first hydraulic cylinder 14-1, a second hydraulic cylinder 14-2, a first hydraulic control one-way valve 15-1, a second hydraulic control one-way valve 15-2, a first three-position four-way electromagnetic proportional directional valve 16-1, a second three-position four-way electromagnetic proportional directional valve 16-2, a first position sensor 17-1 and a second position sensor 17-2.
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.
As shown in fig. 1, the bending machine utilizes fluid transmission to drive the double-cylinder driving slide block to move up and down, and the working conditions are as follows: fast descending, slow descending, working descending, pressure maintaining, pressure relief and return stroke.
Referring to fig. 2, the electro-hydraulic proportional position synchronous control system of the bending machine is composed of an oil tank 1, a filter 2, a constant delivery pump 3, an overflow valve 4, a throttle valve 5, a central three-position four-way electromagnetic directional valve 6, a cartridge valve 7, a two-position two-way electromagnetic directional valve 8, a first two-position three-way electromagnetic directional valve 9-1, a second two-position three-way electromagnetic directional valve 9-2, a signal amplifier 10, a hydraulic control one-way valve 11, an overflow valve 12, a one-way valve 13, a first hydraulic cylinder 14-1, a second hydraulic cylinder 14-2, a first hydraulic control one-way valve 15-1, a second hydraulic control one-way valve 15-2, a first three-position four-way electromagnetic proportional directional valve 16-1, a second three-position four-way electromagnetic proportional directional valve 16-2 and pipelines connected among all the elements.
The electro-hydraulic proportional position synchronous control system of the invention adopts a computer to control the bending machine to carry out the execution operations of fast descending, slow descending, working descending, pressure maintaining, pressure relief, return stroke and the like. The working process is as follows: and in the fast descending stage, a fast descending loop is formed by the first two-position three-way electromagnetic directional valve 9-1, the second two-position three-way electromagnetic directional valve 9-2, the second two-position two-way electromagnetic directional valve 8, the hydraulic control one-way valve 11, the first hydraulic control one-way valve 15-1, the second hydraulic control one-way valve 15-2, the first hydraulic cylinder 14-1, the second hydraulic cylinder 14-2 and connected pipelines thereof. The central three-position four-way electromagnetic directional valve 6 is electrified at the left position, the first three-position four-way electromagnetic proportional directional valve 16-1 is electrified at the left position, the second three-position four-way electromagnetic proportional directional valve 16-2 is electrified at the left position, the first two-position three-way electromagnetic directional valve 9-1 is electrified, the second two-position three-way electromagnetic directional valve 9-2 is not electrified, and the second two-position two-way electromagnetic directional valve 8 is electrified, so that the hydraulic rod can drive the sliding block to rapidly descend, when the hydraulic rod runs to a designated position, the rapid descending stage is switched to the slow descending stage, and the cartridge valve 7, the two-position two-way electromagnetic directional valve 8 and a pipeline thereof form a slow descending loop. In the working stage, the left position of the central three-position four-way electromagnetic directional valve 6 is kept electrified, the left position of the first three-position four-way electromagnetic proportional directional valve 16-1 is kept electrified, the left position of the second three-position four-way electromagnetic proportional directional valve 16-2 is kept electrified, the first two-position three-way electromagnetic directional valve 9-1 is electrified, the second two-position three-way electromagnetic directional valve 9-2 is also electrified, and the second two-position two-way electromagnetic directional valve 8 is not electrified. Pressure maintaining is needed to be carried out in the bending process due to the influence of elastic deformation of materials, in the pressure maintaining stage, the central three-position four-way electromagnetic directional valve 6 is powered off, the first three-position four-way proportional electromagnetic directional valve 16-1 is powered off, the second three-position four-way electromagnetic proportional directional valve 16-2 is powered off, the first two-position three-way electromagnetic directional valve 9-1 is not powered on, the second two-position three-way electromagnetic directional valve 9-2 is powered on, the second two-position two-way electromagnetic directional valve 8 is powered off, and at the moment, the loop is in the pressure maintaining state. The fixed displacement pump and the overflow valve 4 form an unloading loop. And in the return stage after the pressure maintaining is finished, the right position of the central three-position four-way electromagnetic directional valve 6 is kept electrified, the right position of the first three-position four-way electromagnetic proportional directional valve 16-1 is kept electrified, the right position of the second three-position four-way electromagnetic proportional directional valve 16-2 is kept electrified, the two-position two-way electromagnetic directional valve 8 is electrified, the first two-position three-way electromagnetic directional valve 9-1 is not electrified, and the second two-position three-way electromagnetic directional valve 9-2 is electrified. The above processes realize the effect of controlling the quick-falling, slow-falling, working, pressure maintaining, pressure relief and return procedures of the bending machine by the computer.
Claims (5)
1. The utility model provides an electro-hydraulic proportional position synchro control system for bender which characterized in that: the hydraulic control system comprises an oil tank (1), a filter (2), a dosing pump (3), an overflow valve (4), a throttle valve (5), a central three-position four-way electromagnetic directional valve (6), a cartridge valve (7), a two-position two-way electromagnetic directional valve (8), a one-position three-way electromagnetic directional valve (9-1), a two-position three-way electromagnetic directional valve (9-2), a one-signal amplifier (10-1), a two-signal amplifier (10-2), a three-signal amplifier (10-3), a three-hydraulic control one-way valve (11), the overflow valve (12), a one-way valve (13), a one-hydraulic cylinder (14-1), a two-hydraulic cylinder (14-2), a one-hydraulic control one-way valve (15-1), a two-hydraulic control one-way valve (15-2), a one-position four-way electromagnetic proportional directional valve (16-1), a two-position four-way electromagnetic proportional directional valve (16-2), A first position sensor (17-1) and a second position sensor (17-2), wherein the fixed displacement pump (3) is connected with the oil tank (1) through the filter (2), the other end of the fixed displacement pump (3) is respectively connected with the overflow valve (4) and the central three-position four-way electromagnetic directional valve (6), the central three-position four-way electromagnetic directional valve (6) is respectively connected with the first three-position four-way electromagnetic proportional directional valve (16-1), the second three-position four-way electromagnetic proportional directional valve (16-2) and the cartridge valve (7), the cartridge valve (7) is connected with the two-position two-way electromagnetic directional valve (8), the first three-position four-way electromagnetic proportional directional valve (16-1) and the second three-position four-way electromagnetic proportional directional valve (16-2) are connected with each other, and the first three-position four-way electromagnetic proportional directional valve (16-1) is respectively connected with the first hydraulic cylinder (14) A rodless cavity of the first-position four-way electromagnetic proportional reversing valve (16-2) is connected with a rodless cavity of the second-position hydraulic cylinder (14-2) and the second-position four-way electromagnetic proportional reversing valve (15-2), the first-position four-way electromagnetic proportional reversing valve (16-2) and the second-position four-way electromagnetic proportional reversing valve (15-2) are connected with each other respectively, the first-position hydraulic cylinder (14-1) and the second-position hydraulic cylinder (14-2) are connected with the overflow valve (12) respectively, one side of the overflow valve (12) is connected with the check valve (13) in parallel, the other end of the overflow valve (12) is connected with the first-position four-way electromagnetic proportional reversing valve (16-1) and the second-position four-way electromagnetic proportional reversing valve (16-2) respectively through the third-position hydraulic check valve (11), and the first-position four-way electromagnetic proportional reversing valve (16-1) is connected with the first-position signal amplifier (10-1), The second signal amplifier (10-2) is connected with the first position sensor (17-1) on the piston rod of the first hydraulic cylinder (14-1), the second three-position four-way electromagnetic proportional directional valve (16-2) is connected with the second position sensor (17-2) on the piston rod of the second hydraulic cylinder (14-2) through the third signal amplifier (10-3), the first hydraulic control one-way valve (15-1) and the second hydraulic control one-way valve (15-2) are respectively connected with the quantitative pump (3) through the second two-position three-way electromagnetic directional valve (9-2), and the third hydraulic control one-way valve (11) is connected with the quantitative pump (3) through the first two-position three-way electromagnetic directional valve (9-1).
2. An electro-hydraulic proportional position synchronous control system for a bending machine according to claim 1, characterized in that: the central three-position four-way electromagnetic directional valve (6) is connected with the throttle valve (5) through a pipeline.
3. An electro-hydraulic proportional position synchronous control system for a bending machine according to claim 1, characterized in that: the first hydraulic cylinder (14-1) is connected to the upper oil tank through a first hydraulic control one-way valve (15-1); the second hydraulic cylinder (14-2) is connected to the upper oil tank through a second hydraulic control one-way valve (15-2).
4. An electro-hydraulic proportional position synchronous control system for a bending machine according to claim 1, characterized in that: the oil outlets of the first three-position four-way electromagnetic proportional reversing valve (16-1) and the second three-position four-way electromagnetic proportional reversing valve (16-2) which are connected in parallel are connected with the central three-position four-way electromagnetic reversing valve (6).
5. An electro-hydraulic proportional position synchronous control system for a bending machine according to claim 1, characterized in that: the central three-position four-way electromagnetic directional valve (6) is connected with the cartridge valve (7), and the cartridge valve (7) is connected with the two-position two-way electromagnetic directional valve (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010487342.6A CN111608968B (en) | 2020-06-02 | 2020-06-02 | Electro-hydraulic proportional position synchronous control system for bending machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010487342.6A CN111608968B (en) | 2020-06-02 | 2020-06-02 | Electro-hydraulic proportional position synchronous control system for bending machine |
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| CN111608968A CN111608968A (en) | 2020-09-01 |
| CN111608968B true CN111608968B (en) | 2022-05-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201110284Y (en) * | 2007-10-10 | 2008-09-03 | 山东泰丰液压设备有限公司 | Hydraulic control valve set for bending machine |
| CN205101299U (en) * | 2015-11-03 | 2016-03-23 | 安徽天水液压机床科技有限公司 | Numerical control hydraulic pressure sheet material tubulation make -up machine hydraulic system |
| CN207762034U (en) * | 2017-12-17 | 2018-08-24 | 四川航空工业川西机器有限责任公司 | A kind of double oil cylinder synchronous lifting devices of large scale isostatic pressing machine end cap |
-
2020
- 2020-06-02 CN CN202010487342.6A patent/CN111608968B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201110284Y (en) * | 2007-10-10 | 2008-09-03 | 山东泰丰液压设备有限公司 | Hydraulic control valve set for bending machine |
| CN205101299U (en) * | 2015-11-03 | 2016-03-23 | 安徽天水液压机床科技有限公司 | Numerical control hydraulic pressure sheet material tubulation make -up machine hydraulic system |
| CN207762034U (en) * | 2017-12-17 | 2018-08-24 | 四川航空工业川西机器有限责任公司 | A kind of double oil cylinder synchronous lifting devices of large scale isostatic pressing machine end cap |
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| CN111608968A (en) | 2020-09-01 |
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