CN103029320B - Hydraulic overload protective system capable of setting tonnages and working method thereof - Google Patents
Hydraulic overload protective system capable of setting tonnages and working method thereof Download PDFInfo
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- CN103029320B CN103029320B CN201210500928.7A CN201210500928A CN103029320B CN 103029320 B CN103029320 B CN 103029320B CN 201210500928 A CN201210500928 A CN 201210500928A CN 103029320 B CN103029320 B CN 103029320B
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Abstract
The invention discloses a hydraulic overload protective system capable of setting tonnages and a working method thereof. The system comprises a pneumatic proportional pressure regulating valve A, an overload protective valve, a hydraulic cushion, a pressure sensor, a shutoff type electromagnetic valve, a pneumatic pump, a pneumatic proportional pressure regulating valve B, a gear pump motor set, a controller and a touch screen, wherein the pneumatic proportional pressure regulating valve A is connected with the hydraulic cushion via the overload protective valve; and the hydraulic cushion is also respectively connected with the pneumatic pump and the pump gear motor set. The hydraulic overload protective system has the advantages that overload protective pressure can be remotely set in a multistep manner, air pressure needed by corresponding overload protective valves is calculated through calculating overload protective tonnages needed by different molds, and the pneumatic proportional pressure regulating valve A on an air cavity side of the overload protective valve is correspondingly regulated, so remote multistep setting of the air pressure is realized; and pressure parameters can be well preset in the electric controller by aiming at different mold numbers, and the tonnages are automatically selected according to the numbers when the molds are replaced, so the production efficiency is improved.
Description
Technical field
The present invention relates to the overload protection control technology in a kind of punching machine, particularly a kind of setting tonnage hydraulic overload protective device and method of work thereof.
Background technology
Hydraulic pressure overload protective system is widely used in premature beats in punching machine.Existing overload protective device is all not automatically setting and can only set the overload protective device of single tonnage; And selected overload protection valve is hydraulic valve, and cost is very high.Do the producer of overload protective device abroad, designed overload protective device is all the overload protection valve selecting oneself exclusive, and user is difficult to obtain related data, makes troubles to plant maintenance.Along with the development of auto industry, traditional overload protective device can not meet the needs of auto vendor for the different overload protection tonnage of different size mould correspondence setting.
Summary of the invention
For solving the problems referred to above that prior art exists, the present invention will design a kind of automatically setting and can set setting tonnage hydraulic overload protective device and the method for work thereof of multistage tonnage.
To achieve these goals, technical scheme of the present invention is as follows: a kind of hydraulic pressure overload protective system setting tonnage, comprise air cleaner A, pneumatic proportional pressure regulator valve A, manual ball valve, overload protection valve, hydraulic die cushion, pressure sensor, safety valve A, cut-off type magnetic valve, air driven pump, pneumatic proportional pressure regulator valve B, air cleaner B, gear pump motor group, compensator A, oil absorption filter A, safety valve B, compensator B and oil absorption filter B, also comprise controller and touch-screen; One end of described air cleaner A is connected with factory air delivering pipeline, the other end is connected with hydraulic die cushion through check valve A, pneumatic proportional pressure regulator valve A, manual ball valve and overload protection valve, is provided with Pressure gauge A between pneumatic proportional pressure regulator valve A and manual ball valve; Described hydraulic pressure is paid somebody's debt and expected repayment later and is connected with check valve B, after check valve B, be divided into two-way, and a road is connected to oil absorption filter A through check valve C, air driven pump and compensator A, and another road is connected to oil absorption filter B through check valve D, gear pump motor group and compensator B; Pressure gauge B is installed between hydraulic die cushion and check valve B; Between check valve C and air driven pump, be separately installed with pressure sensor, safety valve A and cut-off type magnetic valve, the left end of described safety valve A and the left end of cut-off type magnetic valve are connected on the pipeline between check valve C and air driven pump, the right-hand member of safety valve A and the right-hand member of cut-off type magnetic valve be connected on return line; Described air driven pump is also connected with air cleaner B through pneumatic proportional pressure regulator valve B; Between check valve D and gear pump motor group, safety valve B is also installed; Described oil absorption filter A, safety valve B and oil absorption filter B are also connected respectively on return line; Described hydraulic pressure is paid somebody's debt and expected repayment later and is connected with guide pillar; Described controller is connected with pneumatic proportional pressure regulator valve A, overload protection valve, pressure sensor, cut-off type magnetic valve, air driven pump, pneumatic proportional pressure regulator valve B, gear pump motor group and touch-screen respectively by data wire, and described touch-screen is arranged on far-end column.
Pneumatic proportional pressure regulator valve A of the present invention and pneumatic proportional dump valve B selects conventional general pneumatic proportional magnetic valve.
Air cleaner A of the present invention is connected with 1 mouthful of pneumatic proportional pressure regulator valve A after check valve A, and 2 mouthfuls of described pneumatic proportional pressure regulator valve A are connected on the interface of air cavity side of overload protection valve through manual ball valve.
Set a method of work for the hydraulic pressure overload protective system of tonnage, comprise the following steps:
A, first cut-off type magnetic valve electromagnet is obtained electric, make air driven pump be in pressure release state, subsequently starter toothed wheel pump motor group, low pressure topping up is carried out to whole system, the conversion feedback of pressure is carried out by pneumatic proportional pressure regulator valve A, after reaching supercharging pressure, the power-off of cut-off type magnetic valve electromagnet, carries out high pressure supercharging by air driven pump, now gear pump motor group is shut down, reduce energy consumption, after reaching the pressure of the builder's tonnage of system, carry out high pressure pressurize;
B, factory air enter the air cavity side of overload protection valve after pneumatic proportional pressure regulator valve A, under some initial hydraulic rigidity prerequisites, for different moulds number, by the touch-screen on far-end column, different overload protection air pressure corresponding for pneumatic proportional pressure regulator valve A are stored in controller, and carry out classification numbering for different mould;
The air pressure of original oil pressure in C, hydraulic die cushion by regulating air driven pump to drive the pneumatic proportional pressure regulator valve B in gas circuit, and then regulate the oil pressure of air driven pump output circuit and carry out hydraulic die cushion original oil pressure classification setting.For different moulds and rigidity requirement corresponding to tonnage; by the touch-screen on far-end column; the pressure of pneumatic proportional pressure regulator valve B corresponding different for different overload protection initial hydraulic pressure is numbered and is stored in controller, to meet the integral rigidity requirement of hydraulic pressure overload protective system.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention can carry out long-range multistage setting to overload protection pressure, by the calculating of overload protection tonnage needed for different mould, calculate the air pressure needed for corresponding overload protection valve air cavity side, correspondence carries out the pneumatic proportional pressure regulator valve A regulating air cavity side, realizes the long-range multistage setting to air pressure; For different overload pressures, under the prerequisite considering system stiffness, original oil pressure in corresponding hydraulic die cushion needs to set, and drives the air pressure of the pneumatic proportional pressure regulator valve B in gas circuit and then regulate the oil pressure of air driven pump output circuit and carry out hydraulic die cushion original oil pressure classification setting by regulating air driven pump; Can realize for different die number, pre-set pressure parameter in electrical control, automatically carry out tonnage selection when die change according to numbering, enhance productivity.
2, due to the hydraulic cavities of the overload protection valve in the present invention and the ratio adjusting valve of pneumatic cavity pressure, select conventional general aerodynamic proportional dump valve, greatly reduce cost, be convenient to safeguard and change and select spare part.
3, because hydraulic die cushion of the present invention adopts low pressure gear pump group of motors topping up, the pressurize of air driven pump high pressure, topping up rear gear pump group of motors can be shut down; employing air driven pump high pressure pressurize; reach energy-conservation object, greatly reduce the energy consumption of Hydraulic Station, achieve green equipment industry.
4, because the present invention adopts traditional overload protection valve, the use full maturity of overload protection valve, and structure is simple; avoid after adopting external overload protective device; overload protection valve maintain and replace difficulty, has a strong impact on production efficiency, has broken the blockade on new techniques of selecting external overload protective device.
5, the present invention is directed to different moulds number; different overload protection air pressure corresponding for pneumatic proportional pressure regulator valve A are stored in controller, and corresponding different mould carries out classification numbering, carries out Remote Selection by touch-screen; save mould replacing time, improve operating efficiency.
6, the present invention is directed to different moulds and rigidity requirement corresponding to tonnage; the pressure of pneumatic proportional pressure regulator valve B corresponding different for different overload protection hydraulic pressure initial pressures is numbered and is stored in controller; carry out remote setting overload protection hydraulic pressure initial pressure by the touch-screen on far-end column, and then meet the rigidity requirement of system.
Accompanying drawing explanation
The present invention is drawings attached 1 only, wherein:
Fig. 1 is the hydraulic pressure overload protective system schematic of setting tonnage.
In figure: 1, air cleaner A; 2, check valve A; 3, pneumatic proportional pressure regulator valve A; 4, Pressure gauge A; 5, manual ball valve; 6, overload protection valve; 7, hydraulic die cushion; 8, Pressure gauge B; 9, check valve B; 10, check valve C; 11, check valve D; 12, pressure sensor; 13, safety valve A; 14, cut-off type magnetic valve; 15, air driven pump; 16, pneumatic proportional pressure regulator valve B; 17, air cleaner B; 18, gear pump motor group; 19, compensator A; 20, oil absorption filter A, 21, safety valve B, 22, compensator B; 23, oil absorption filter B, 24, guide pillar.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.As shown in Figure 1, a kind of hydraulic pressure overload protective system setting tonnage, comprise air cleaner A1, pneumatic proportional pressure regulator valve A3, manual ball valve 5, overload protection valve 6, hydraulic die cushion 7, pressure sensor 12, safety valve A13, cut-off type magnetic valve 14, air driven pump 15, pneumatic proportional pressure regulator valve B16, air cleaner B17, gear pump motor group 18, compensator A19, oil absorption filter A20, safety valve B21, compensator B22 and oil absorption filter B23, also comprise controller and touch-screen; One end of described air cleaner A1 is connected with factory air delivering pipeline, the other end is connected with hydraulic die cushion 7 through check valve A2, pneumatic proportional pressure regulator valve A3, manual ball valve 5 and overload protection valve 6, is provided with Pressure gauge A4 between pneumatic proportional pressure regulator valve A3 and manual ball valve 5; Described hydraulic die cushion 7 is also connected with check valve B9, two-way is divided into after check valve B9, one tunnel is connected to oil absorption filter A20 through check valve C10, air driven pump 15 and compensator A19, and another road is connected to oil absorption filter B23 through check valve D11, gear pump motor group 18 and compensator B22; Pressure gauge B8 is installed between hydraulic die cushion 7 and check valve B9; Between check valve C10 and air driven pump 15, be separately installed with pressure sensor 12, safety valve A13 and cut-off type magnetic valve 14, the left end of described safety valve A13 and the left end of cut-off type magnetic valve 14 are connected on the pipeline between check valve C10 and air driven pump 15, the right-hand member of safety valve A13 and the right-hand member of cut-off type magnetic valve 14 be connected on return line; Described air driven pump 15 is also connected with air cleaner B17 through pneumatic proportional pressure regulator valve B16; Between check valve D11 and gear pump motor group 18, safety valve B21 is also installed; Described oil absorption filter A20, safety valve B21 and oil absorption filter B23 are also connected respectively on return line; Described hydraulic die cushion 7 is also connected with guide pillar 24; Described controller is connected with pneumatic proportional pressure regulator valve A3, overload protection valve 6, pressure sensor 12, cut-off type magnetic valve 14, air driven pump 15, pneumatic proportional pressure regulator valve B16, gear pump motor group 18 and touch-screen respectively by data wire, and described touch-screen is arranged on far-end column.
Pneumatic proportional pressure regulator valve A3 of the present invention and pneumatic proportional dump valve B16 selects conventional general pneumatic proportional magnetic valve.
Air cleaner A1 of the present invention is connected with 1 mouthful of pneumatic proportional pressure regulator valve A3 after check valve A2, and 2 mouthfuls of described pneumatic proportional pressure regulator valve A3 are connected on the interface of air cavity side of overload protection valve 6 through manual ball valve 5.
Set a method of work for the hydraulic pressure overload protective system of tonnage, comprise the following steps:
A, first cut-off type magnetic valve 14 electromagnet is obtained electric, make air driven pump 15 be in pressure release state, subsequently starter toothed wheel pump motor group 18, low pressure topping up is carried out to whole system, the conversion feedback of pressure is carried out by pneumatic proportional pressure regulator valve A3, after reaching supercharging pressure, the power-off of cut-off type magnetic valve 14 electromagnet, carries out high pressure supercharging by air driven pump 15, now gear pump motor group 18 is shut down, reduce energy consumption, after reaching the pressure of the builder's tonnage of system, carry out high pressure pressurize;
B, factory air enter the air cavity side of overload protection valve 6 after pneumatic proportional pressure regulator valve A3, under some initial hydraulic rigidity prerequisites, for different moulds number, by the touch-screen on far-end column, different overload protection air pressure corresponding for pneumatic proportional pressure regulator valve A3 are stored in controller, and carry out classification numbering for different mould;
Original oil pressure in C, hydraulic die cushion 7 is by regulating air driven pump 15 to drive the air pressure of the pneumatic proportional pressure regulator valve B16 in gas circuit and then regulating the oil pressure of air driven pump 15 output circuit and carry out hydraulic die cushion original oil pressure classification setting; For different moulds and rigidity requirement corresponding to tonnage; by the touch-screen on far-end column; the pressure of pneumatic proportional pressure regulator valve B16 corresponding different for different overload protection hydraulic pressure initial pressures is numbered and is stored in controller, to meet the integral rigidity requirement of hydraulic pressure overload protective system.
The present invention can carry out long-range multistage setting to overload protection pressure, by the calculating of overload protection tonnage needed for different mould, calculate the air pressure of the air cavity side needed for corresponding overload protection valve 6, correspondence carries out the air pressure of the pneumatic proportional pressure regulator valve A3 regulating air cavity side, realizes the long-range multistage setting to air pressure; For different overload pressures, under the prerequisite considering system stiffness, the original oil pressure of corresponding hydraulic die cushion 7 needs to set, and by adjusting the pneumatic proportional pressure regulator valve B16 in the source of the gas gas circuit of air driven pump 15, realizes the long-range multistage setting of hydraulic die cushion 7 original oil pressure; Can realize for different die number, pre-set pressure parameter in electrical control, automatically carry out tonnage selection when die change according to numbering, enhance productivity.
Claims (4)
1. one kind sets the hydraulic pressure overload protective system of tonnage, it is characterized in that: comprise air cleaner A (1), pneumatic proportional pressure regulator valve A (3), manual ball valve (5), overload protection valve (6), hydraulic die cushion (7), pressure sensor (12), safety valve A (13), cut-off type magnetic valve (14), air driven pump (15), pneumatic proportional pressure regulator valve B (16), air cleaner B (17), gear pump motor group (18), compensator A (19), oil absorption filter A (20), safety valve B (21), compensator B (22) and oil absorption filter B (23), also comprise controller and touch-screen, one end of described air cleaner A (1) is connected with factory air delivering pipeline, the other end is connected with hydraulic die cushion (7) through check valve A (2), pneumatic proportional pressure regulator valve A (3), manual ball valve (5) and overload protection valve (6), is provided with Pressure gauge A (4) between pneumatic proportional pressure regulator valve A (3) and manual ball valve (5), described hydraulic die cushion (7) is also connected with check valve B (9), two-way is divided into after check valve B (9), one tunnel is connected to oil absorption filter A (20) through check valve C (10), air driven pump (15) and compensator A (19), and another road is connected to oil absorption filter B (23) through check valve D (11), gear pump motor group (18) and compensator B (22), Pressure gauge B (8) is installed between hydraulic die cushion (7) and check valve B (9), between check valve C (10) and air driven pump (15), be separately installed with pressure sensor (12), safety valve A (13) and cut-off type magnetic valve (14), the left end of described safety valve A (13) and the left end of cut-off type magnetic valve (14) are connected on the pipeline between check valve C (10) and air driven pump (15), the right-hand member of safety valve A (13) and the right-hand member of cut-off type magnetic valve (14) be connected on return line, described air driven pump (15) is also connected with air cleaner B (17) through pneumatic proportional pressure regulator valve B (16), safety valve B (21) is also installed between check valve D (11) and gear pump motor group (18), described oil absorption filter A (20), safety valve B (21) and oil absorption filter B (23) are also connected respectively on return line, described hydraulic die cushion (7) is also connected with guide pillar (24), described controller is connected with pneumatic proportional pressure regulator valve A (3), overload protection valve (6), pressure sensor (12), cut-off type magnetic valve (14), air driven pump (15), pneumatic proportional pressure regulator valve B (16), gear pump motor group (18) and touch-screen respectively by data wire, and described touch-screen is arranged on far-end column.
2. a kind of hydraulic pressure overload protective system setting tonnage according to claim 1, is characterized in that: described pneumatic proportional pressure regulator valve A (3) and pneumatic proportional dump valve B (16) selects conventional general pneumatic proportional magnetic valve.
3. a kind of hydraulic pressure overload protective system setting tonnage according to claim 1; it is characterized in that: described air cleaner A (1) is connected with 1 mouthful of pneumatic proportional pressure regulator valve A (3) after check valve A (2), 2 mouthfuls of described pneumatic proportional pressure regulator valve A (3) are connected to through manual ball valve (5) on the interface of the air cavity side of overload protection valve (6).
4. set a method of work for the hydraulic pressure overload protective system of tonnage, it is characterized in that: comprise the following steps:
A, first cut-off type magnetic valve (14) electromagnet is obtained electric, air driven pump (15) is made to be in pressure release state, starter toothed wheel pump motor group (18) subsequently, low pressure topping up is carried out to whole system, the conversion feedback of pressure is carried out by pneumatic proportional pressure regulator valve A (3), after reaching supercharging pressure, cut-off type magnetic valve (14) electromagnet power-off, high pressure supercharging is carried out by air driven pump (15), now gear pump motor group (18) is shut down, reduce energy consumption, after reaching the pressure of the builder's tonnage of system, carry out high pressure pressurize;
B, factory air enter the air cavity side of overload protection valve (6) after pneumatic proportional pressure regulator valve A (3), under some initial hydraulic rigidity prerequisites, for different moulds number, by the touch-screen on far-end column, the different overload protection air pressure that pneumatic proportional pressure regulator valve A (3) is corresponding are stored in controller, and carry out classification numbering for different mould;
The air pressure of original oil pressure in C, hydraulic die cushion (7) by regulating air driven pump (15) to drive the pneumatic proportional pressure regulator valve B (16) in gas circuit, and then regulate the oil pressure of air driven pump (15) output circuit and carry out the classification setting of hydraulic die cushion original oil pressure; For different moulds and rigidity requirement corresponding to tonnage; by the touch-screen on far-end column; the pressure of pneumatic proportional pressure regulator valve B (16) corresponding different for different overload protection hydraulic pressures is numbered and is stored in controller, to meet the integral rigidity requirement of hydraulic pressure overload protective system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210500928.7A CN103029320B (en) | 2012-11-29 | 2012-11-29 | Hydraulic overload protective system capable of setting tonnages and working method thereof |
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| CN201210500928.7A CN103029320B (en) | 2012-11-29 | 2012-11-29 | Hydraulic overload protective system capable of setting tonnages and working method thereof |
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| CN103029320B true CN103029320B (en) | 2015-03-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105034441B (en) * | 2015-07-27 | 2016-09-14 | 金丰（中国）机械工业有限公司 | A kind of overload detection method of forcing press |
| CN106956464A (en) * | 2017-05-22 | 2017-07-18 | 四川瑞丰锻造有限公司 | A kind of overload protection arrangement of forging press |
| CN110682591A (en) * | 2019-10-22 | 2020-01-14 | 沃得精机(中国)有限公司 | Overload protection control device for press machine |
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| GB2133741A (en) * | 1983-01-10 | 1984-08-01 | Mitsubishi Heavy Ind Ltd | Hydraulic vulcanizing press |
| JPS59147800A (en) * | 1983-02-10 | 1984-08-24 | Amada Co Ltd | Safety device against overload of press |
| CN85201415U (en) * | 1985-04-24 | 1986-11-19 | 杭法兴 | Energy-accumulating hydraulic overloadproof device for press |
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