CN103807239A - Dual output shaft motor based shear plate synchronous control hydraulic system - Google Patents
Dual output shaft motor based shear plate synchronous control hydraulic system Download PDFInfo
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Abstract
A dual output shaft motor based shear plate synchronous control hydraulic system relates to a plate shear synchronous control hydraulic system. The dual output shaft motor based shear plate synchronous control hydraulic system comprises two shear cylinders, two stock stopping cylinders, three pressing cylinders and a shear cylinder synchronous control system, wherein the shear cylinder synchronous control system comprises an oil tank, two same hydraulic pumps, a dual output shaft motor for driving the two hydraulic pumps to rotate, and two first check valves; an oil outlet of each first one-way valve is connected with a first oil way, a second oil way and a third oil way respectively, the first oil way comprises a pilot operated compound relief valve and a two-position two-way electromagnetic valve, the second oil way comprises a sequence valve and a two-position four-way electromagnetic valve, the third oil way comprises a reducing valve, a second check valve and a first energy accumulator, the dual output shaft motor drives the two same hydraulic pumps to supply oil for the two same shear cylinders, so as to better guarantee the synchronous accuracy of the two shear cylinders, and the two shear cylinders are respectively connected with the first energy accumulator to maintain the pressure.
Description
Technical field
The present invention relates to a kind of guillotine shear synchronous control hydraulic system, be specially a kind of guillotine shear synchronous control hydraulic system based on Dual-output shaft motor, be specially adapted to large-scale guillotine shear twin-tub high-precise synchronization control hydraulic system.
Background technique
At present, guillotine shear is very universal at home and abroad, and the size of shearing plate is also increasing, and major part all adopts hydraulic transmission.Large-scale guillotine shear adopts twin-tub system to shear plate mostly, and therefore the synchronous control accuracy of twin-tub system seems and is even more important, and this is an important measurement index that concerns product performance quality.Most products on market now, twin-tub system synchronization precision is all lower, shears the second-rate of plate.
Patent 200620158152.5 and 201120154346.9 has been announced a kind of lock formula hydraulic system of cutting machine, all adopt series cylinder to guarantee to shear the synchronous of plate, but owing to lacking recharging oil device, synchronization accuracy is not high, be not well positioned to meet the synchronization control requirement of large-scale guillotine shear.Meeting under the prerequisite of system basic demand, should improve the synchronous control accuracy of twin-tub system as far as possible, improving the quality of shearing plate.
Summary of the invention
The object of the invention is for the not high present situation of current large-scale guillotine shear twin-tub system synchronization precision, a kind of guillotine shear synchronous control hydraulic system based on Dual-output shaft motor is provided, this hydraulic system can guarantee the synchronization accuracy of guillotine shear twin-tub system preferably, and it is more steady to shear plate, and shearing quality is better.
The technological scheme that realizes above-mentioned purpose is: a kind of shear plate synchronous control hydraulic system based on Dual-output shaft motor, comprises two identical shear cylinders, two identical backgauge cylinders, three identical binder cylinders and shear cylinder synchronous control system, described shear cylinder synchronous control system comprises fuel tank, two identical oil hydraulic pumps and the Dual-output shaft motor that drives two oil hydraulic pumps to rotate, the filler opening of two oil hydraulic pumps connects fuel tank, the oil outlet of two oil hydraulic pumps is connected with respectively the first one-way valve, the filler opening of each the first one-way valve connects with the oil outlet of corresponding oil hydraulic pump respectively, and the oil outlet of each the first one-way valve is connected with respectively the first pressure gauge, the oil outlet of each the first one-way valve is connected with respectively the first oil circuit, the second oil circuit and the 3rd oil circuit, the first oil circuit comprises pilot operated compound relief valve and two-position two-way solenoid valve, the filler opening of pilot operated compound relief valve connects the oil outlet of the first one-way valve, the oil outlet of pilot operated compound relief valve connects fuel tank, the control hydraulic fluid port of pilot operated compound relief valve connects the filler opening of two-position two-way solenoid valve, and the oil outlet of two-position two-way solenoid valve connects fuel tank, the second oil circuit comprises sequence valve and two-position four-way solenoid valve, the filler opening of sequence valve connects the oil outlet of the first one-way valve, the oil outlet of sequence valve connects the pressure hydraulic fluid port P of two-position four-way solenoid valve, the oil return inlet T of two-position four-way solenoid valve connects fuel tank, the actuator port of two-position four-way solenoid valve connects respectively a shear cylinder, described shear cylinder is single-rod piston cylinder, the actuator port A of two-position four-way solenoid valve connects the rodless cavity of shear cylinder, and the actuator port B of two-position four-way solenoid valve connects the rod chamber of shear cylinder, the 3rd oil circuit comprises reduction valve, the second one-way valve and the first accumulator, the filler opening of reduction valve is connected with the oil outlet of the first one-way valve, the oil outlet of reduction valve connects the filler opening of the second one-way valve, described the first accumulator is connected to the oil outlet of the second one-way valve, the outside control mouth of the sequence valve in described the second oil circuit is connected between the first accumulator and the second one-way valve, article two, after the oil outlet parallel connection of the second one-way valve in the 3rd oil circuit, be connected with three binder cylinders and two backgauge cylinders respectively, described binder cylinder is single-acting plunger type hydraulic cylinder, described backgauge cylinder be hydraulic cylinder with double piston rods, the diameter of the piston rod of backgauge cylinder one side cavity is greater than the diameter of opposite side cavity piston rod, article described two, after the oil outlet parallel connection of the second one-way valve in the 3rd oil circuit, be connected with described backgauge cylinder small bore piston bar one side cavity, between the first accumulator in described three binder cylinders and the 3rd oil circuit, be connected with the second pressure gauge and the first relief valve, the filler opening of the first relief valve connects respectively the first accumulator and the second pressure gauge, the oil outlet of the first relief valve connects fuel tank, between the cavity of enlarged bore piston bar one side of described two backgauge cylinders, after parallel connection, be connected with the 3rd accumulator, the 3rd pressure gauge and the second relief valve, the filler opening of described the second relief valve connects respectively the cavity of enlarged bore piston bar one side of the 3rd pressure gauge, the 3rd accumulator and two backgauge cylinders.
Optimally, between the oil return inlet T of described two two-position four-way solenoid valves and fuel tank, be connected with respectively series flow control valve, the filler opening of series flow control valve connects the oil return inlet T of two-position four-way solenoid valve, and the oil outlet of series flow control valve connects fuel tank, make to shear plate more steady, shearing quality is better.
The invention has the beneficial effects as follows:
(1) Dual-output shaft motor drives two identical oil hydraulic pumps respectively to two identical shear cylinder fuel feeding, can guarantee preferably the synchronization accuracy of two shear cylinders.
(2) two shear cylinders of the present invention are connected with respectively the first accumulator and realize pressurize, have reduced the energy consumption of system.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present invention.
Embodiment
As shown in Figure 1, the present invention includes two identical shear cylinders 1, two identical backgauge cylinders 2, three identical binder cylinders 3 and shear cylinder synchronous control systems 4.
Shear cylinder synchronous control system 4 comprises fuel tank 5, two identical oil hydraulic pumps 6 and drives two Dual-output shaft motors 7 that oil hydraulic pump 6 rotates, the filler opening of two oil hydraulic pumps 6 connects fuel tank 5, the oil outlet of two oil hydraulic pumps 6 is connected with respectively the first one-way valve 8, the filler opening of each the first one-way valve 8 connects with the oil outlet of corresponding oil hydraulic pump 6 respectively, and the oil outlet of each the first one-way valve 8 is connected with respectively the first pressure gauge 9.
The oil outlet of each the first one-way valve 8 is connected with respectively the first oil circuit 10, the second oil circuit 11 and the 3rd oil circuit 12, the first oil circuit 11 comprises pilot operated compound relief valve 13 and two-position two-way solenoid valve 14, the filler opening of pilot operated compound relief valve 13 connects the oil outlet of the first one-way valve 8, the oil outlet of pilot operated compound relief valve 13 connects fuel tank 5, the control hydraulic fluid port of pilot operated compound relief valve 13 connects the filler opening of two-position two-way solenoid valve 14, and the oil outlet of two-position two-way solenoid valve 14 connects fuel tank 5, the second oil circuit 11 comprises sequence valve 15 and two-position four-way solenoid valve 16, the filler opening of sequence valve 15 connects the oil outlet of the first one-way valve 8, the oil outlet of sequence valve 15 connects the pressure hydraulic fluid port P of two-position four-way solenoid valve 16, the return opening of two-position four-way solenoid valve 16 connects fuel tank 5 by series flow control valve 17, the actuator port of two-position four-way solenoid valve 16 connects respectively a shear cylinder 1, shear cylinder 1 is single-rod piston cylinder, the actuator port A of two-position four-way solenoid valve 16 connects the rodless cavity of shear cylinder 1, and the actuator port B of two-position four-way solenoid valve 16 connects the rod chamber of shear cylinder 1, the 3rd oil circuit 12 comprises reduction valve 18, the second one-way valve 19 and the first accumulator 20, the filler opening of reduction valve 18 is connected with the oil outlet of the first one-way valve 8, the oil outlet of reduction valve 18 connects the filler opening of the second one-way valve 19, the first accumulator 20 is connected to the oil outlet of the second one-way valve 19, in the second oil circuit, the outside control mouth of 11 sequence valve 15 is connected between the first accumulator 20 and the second one-way valve 19, article two, after the oil outlet parallel connection of the second one-way valve 19 in the 3rd oil circuit 12, be connected with three binder cylinders 3 and two backgauge cylinders 2 respectively, described binder cylinder 3 is single-acting plunger type hydraulic cylinder, described backgauge cylinder 2 be hydraulic cylinder with double piston rods, the diameter of the piston rod of backgauge cylinder 2 one side cavitys is greater than the diameter of opposite side cavity piston rod, article described two, after the oil outlet parallel connection of the second one-way valve 19 in the 3rd oil circuit 12, be connected with backgauge cylinder 2 small bore piston bar one side cavitys.
Between the first accumulator 20 in three binder cylinders 3 and the 3rd oil circuit 12, be connected with the second pressure gauge 21 and the first relief valve 22, the filler opening of the first relief valve 22 connects respectively the first accumulator 20 and the second pressure gauge 21, the oil outlet of the first relief valve 22 connects fuel tank 5, between the cavity of enlarged bore piston bar one side of two backgauge cylinders 2, after parallel connection, be connected with the 3rd accumulator 23, the 3rd pressure gauge 24 and the second relief valve 25, the filler opening of the second relief valve 25 connects respectively the 3rd pressure gauge 24, the cavity of enlarged bore piston bar one side of the 3rd accumulator 23 and two backgauge cylinders 2.
The working principle of the guillotine shear synchronous control hydraulic system based on Dual-output shaft motor of the present invention is as follows:
1, Dual-output shaft motor 7 starts, and the electromagnet 1YD of two-position two-way solenoid valve 14, the electromagnet 2YD of two-position four-way solenoid valve 16 must not electricity, and system is in unloading condition, two shear cylinder 1 transfixions.
2, the electromagnet 1YD of two-position two-way solenoid valve 14 obtains electricly, and fluid through reduction valve 18, enters three binder cylinders 2 and two backgauge cylinders 3, and plate is compacted, and backgauge cylinder 2 leaves plate.
3, system pressure raises, and sequence valve 15 is opened, and fluid, through two-position four-way solenoid valve 16, enters the rodless cavity of two shear cylinders 1, and plate is slowly sheared.
4, the electromagnet 2YD of two-position four-way solenoid valve 16 obtain electric, the left position work of two-position four-way solenoid valve 16, fluid enters the rod chamber of two shear cylinders 1, tool rest return stroke.
5, the 3rd accumulator 23 is given two backgauge cylinder 2 fuel feeding, two backgauge cylinder 2 backhauls.
Claims (2)
1. the shear plate synchronous control hydraulic system based on Dual-output shaft motor, is characterized in that: comprise two identical shear cylinders, two identical backgauge cylinders, three identical binder cylinders and shear cylinder synchronous control system, described shear cylinder synchronous control system comprises fuel tank, two identical oil hydraulic pumps and the Dual-output shaft motor that drives two oil hydraulic pumps to rotate, the filler opening of two oil hydraulic pumps connects fuel tank, the oil outlet of two oil hydraulic pumps is connected with respectively the first one-way valve, the filler opening of each the first one-way valve connects with the oil outlet of corresponding oil hydraulic pump respectively, and the oil outlet of each the first one-way valve is connected with respectively the first pressure gauge, the oil outlet of each the first one-way valve is connected with respectively the first oil circuit, the second oil circuit and the 3rd oil circuit, the first oil circuit comprises pilot operated compound relief valve and two-position two-way solenoid valve, the filler opening of pilot operated compound relief valve connects the oil outlet of the first one-way valve, the oil outlet of pilot operated compound relief valve connects fuel tank, the control hydraulic fluid port of pilot operated compound relief valve connects the filler opening of two-position two-way solenoid valve, and the oil outlet of two-position two-way solenoid valve connects fuel tank, the second oil circuit comprises sequence valve and two-position four-way solenoid valve, the filler opening of sequence valve connects the oil outlet of the first one-way valve, the oil outlet of sequence valve connects the pressure hydraulic fluid port P of two-position four-way solenoid valve, the oil return inlet T of two-position four-way solenoid valve connects fuel tank, the actuator port of two-position four-way solenoid valve connects respectively a shear cylinder, described shear cylinder is single-rod piston cylinder, the actuator port A of two-position four-way solenoid valve connects the rodless cavity of shear cylinder, and the actuator port B of two-position four-way solenoid valve connects the rod chamber of shear cylinder, the 3rd oil circuit comprises reduction valve, the second one-way valve and the first accumulator, the filler opening of reduction valve is connected with the oil outlet of the first one-way valve, the oil outlet of reduction valve connects the filler opening of the second one-way valve, described the first accumulator is connected to the oil outlet of the second one-way valve, the outside control mouth of the sequence valve in described the second oil circuit is connected between the first accumulator and the second one-way valve, article two, after the oil outlet parallel connection of the second one-way valve in the 3rd oil circuit, be connected with three binder cylinders and two backgauge cylinders respectively, described binder cylinder is single-acting plunger type hydraulic cylinder, described backgauge cylinder be hydraulic cylinder with double piston rods, the diameter of the piston rod of backgauge cylinder one side cavity is greater than the diameter of opposite side cavity piston rod, article described two, after the oil outlet parallel connection of the second one-way valve in the 3rd oil circuit, be connected with described backgauge cylinder small bore piston bar one side cavity, between the first accumulator in described three binder cylinders and the 3rd oil circuit, be connected with the second pressure gauge and the first relief valve, the filler opening of the first relief valve connects respectively the first accumulator and the second pressure gauge, the oil outlet of the first relief valve connects fuel tank, between the cavity of enlarged bore piston bar one side of described two backgauge cylinders, after parallel connection, be connected with the 3rd accumulator, the 3rd pressure gauge and the second relief valve, the filler opening of described the second relief valve connects respectively the cavity of enlarged bore piston bar one side of the 3rd pressure gauge, the 3rd accumulator and two backgauge cylinders.
2. a kind of shear plate synchronous control hydraulic system based on Dual-output shaft motor according to claim 1, it is characterized in that: between the oil return inlet T of described two two-position four-way solenoid valves and fuel tank, be connected with respectively series flow control valve, the filler opening of series flow control valve connects the oil return inlet T of two-position four-way solenoid valve, and the oil outlet of series flow control valve connects fuel tank.
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| CN201410088506.2A CN103807239B (en) | 2014-03-12 | 2014-03-12 | A kind of shear plate synchronous control hydraulic system based on Dual-output shaft motor |
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| CN201410088506.2A CN103807239B (en) | 2014-03-12 | 2014-03-12 | A kind of shear plate synchronous control hydraulic system based on Dual-output shaft motor |
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| CN103807239B CN103807239B (en) | 2015-09-16 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043866A (en) * | 2014-06-20 | 2014-09-17 | 安徽东海机床制造有限公司 | High-speed shearing device |
| CN105041744A (en) * | 2015-06-25 | 2015-11-11 | 广州艾默德驱动系统技术有限公司 | PLC control system and method of servo energy-saving control system of ceramic press |
| CN105382324A (en) * | 2015-12-04 | 2016-03-09 | 天水锻压机床(集团)有限公司 | Hydraulic control system of gate-type plate shearing machine |
| CN105485516A (en) * | 2015-12-28 | 2016-04-13 | 重庆耐德节能装备有限公司 | Inner-cooled hydraulic supercharger for natural gas fueling substation |
| CN105522435A (en) * | 2014-10-17 | 2016-04-27 | 三菱重工业株式会社 | Pressure maintaining apparatus, machine tool, and method of running pressure maintaining apparatus in machine tool |
| CN106270722A (en) * | 2016-08-31 | 2017-01-04 | 安徽省华夏机床制造有限公司 | A kind of control method of lock formula hydraulic system of cutting machine |
| CN107605871A (en) * | 2017-10-20 | 2018-01-19 | 江苏高德液压机械有限公司 | The hydraulic system of box cutter with ladder compression material-pulling device |
| CN108994367A (en) * | 2018-09-29 | 2018-12-14 | 安徽东海机床制造有限公司 | A kind of plate shearing machine and its hydraulic system |
| CN109695597A (en) * | 2019-02-02 | 2019-04-30 | 无锡贝斯特精机股份有限公司 | A kind of hydraulic control system of achievable fixture precompressed and main pressure |
| PL423429A1 (en) * | 2017-11-14 | 2019-05-20 | Politechnika Poznanska | System for assessment of leaktightness of the injection pump forcing sections |
| CN114087247A (en) * | 2021-11-30 | 2022-02-25 | 中色科技股份有限公司 | Self-synchronizing hydraulic system of aluminum strip sewing machine |
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| FI20185181A1 (en) * | 2018-02-27 | 2019-08-28 | Fiellberg Oy | Power unit for controlling a pressure medium for load control |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1831238A (en) * | 1928-02-29 | 1931-11-10 | Oilgear Co | Multiple hydraulic drive |
| US3590581A (en) * | 1968-05-10 | 1971-07-06 | Vittorio Louis Achille Bianchi | Device for controlling the feeding of hydraulic power devices |
| CN2818031Y (en) * | 2005-04-21 | 2006-09-20 | 南京埃尔法电液技术有限公司 | Hydraulic system of brake style plate shearing machine |
| CN200967103Y (en) * | 2006-11-09 | 2007-10-31 | 徐钊 | Hydraulic equipment of lock type plate shearing machine |
| CN102009220A (en) * | 2010-07-12 | 2011-04-13 | 周建波 | Hydraulic transmission device for plate shearing machine |
| CN103761154A (en) * | 2014-01-27 | 2014-04-30 | 宇龙计算机通信科技(深圳)有限公司 | Cross-platform shear plate synchronizing method and system |
| CN203717500U (en) * | 2014-03-12 | 2014-07-16 | 南通恒力重工机械有限公司 | Plate shearing synchronous hydraulic control system based on double-output-shaft motor |
-
2014
- 2014-03-12 CN CN201410088506.2A patent/CN103807239B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1831238A (en) * | 1928-02-29 | 1931-11-10 | Oilgear Co | Multiple hydraulic drive |
| US3590581A (en) * | 1968-05-10 | 1971-07-06 | Vittorio Louis Achille Bianchi | Device for controlling the feeding of hydraulic power devices |
| CN2818031Y (en) * | 2005-04-21 | 2006-09-20 | 南京埃尔法电液技术有限公司 | Hydraulic system of brake style plate shearing machine |
| CN200967103Y (en) * | 2006-11-09 | 2007-10-31 | 徐钊 | Hydraulic equipment of lock type plate shearing machine |
| CN102009220A (en) * | 2010-07-12 | 2011-04-13 | 周建波 | Hydraulic transmission device for plate shearing machine |
| CN103761154A (en) * | 2014-01-27 | 2014-04-30 | 宇龙计算机通信科技(深圳)有限公司 | Cross-platform shear plate synchronizing method and system |
| CN203717500U (en) * | 2014-03-12 | 2014-07-16 | 南通恒力重工机械有限公司 | Plate shearing synchronous hydraulic control system based on double-output-shaft motor |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043866A (en) * | 2014-06-20 | 2014-09-17 | 安徽东海机床制造有限公司 | High-speed shearing device |
| CN104043866B (en) * | 2014-06-20 | 2016-08-24 | 安徽东海机床制造有限公司 | High-speed shearing device |
| CN105522435A (en) * | 2014-10-17 | 2016-04-27 | 三菱重工业株式会社 | Pressure maintaining apparatus, machine tool, and method of running pressure maintaining apparatus in machine tool |
| CN105041744A (en) * | 2015-06-25 | 2015-11-11 | 广州艾默德驱动系统技术有限公司 | PLC control system and method of servo energy-saving control system of ceramic press |
| CN105382324A (en) * | 2015-12-04 | 2016-03-09 | 天水锻压机床(集团)有限公司 | Hydraulic control system of gate-type plate shearing machine |
| CN105485516A (en) * | 2015-12-28 | 2016-04-13 | 重庆耐德节能装备有限公司 | Inner-cooled hydraulic supercharger for natural gas fueling substation |
| CN106270722A (en) * | 2016-08-31 | 2017-01-04 | 安徽省华夏机床制造有限公司 | A kind of control method of lock formula hydraulic system of cutting machine |
| CN107605871A (en) * | 2017-10-20 | 2018-01-19 | 江苏高德液压机械有限公司 | The hydraulic system of box cutter with ladder compression material-pulling device |
| CN107605871B (en) * | 2017-10-20 | 2023-11-14 | 江苏高德液压机械有限公司 | Hydraulic system of box-type shearing machine with stepped compression type pushing device |
| PL423429A1 (en) * | 2017-11-14 | 2019-05-20 | Politechnika Poznanska | System for assessment of leaktightness of the injection pump forcing sections |
| CN108994367A (en) * | 2018-09-29 | 2018-12-14 | 安徽东海机床制造有限公司 | A kind of plate shearing machine and its hydraulic system |
| CN108994367B (en) * | 2018-09-29 | 2023-08-25 | 安徽东海机床制造有限公司 | Plate shearing machine and hydraulic system thereof |
| CN109695597A (en) * | 2019-02-02 | 2019-04-30 | 无锡贝斯特精机股份有限公司 | A kind of hydraulic control system of achievable fixture precompressed and main pressure |
| CN109695597B (en) * | 2019-02-02 | 2020-05-12 | 无锡贝斯特精机股份有限公司 | Hydraulic control system capable of realizing clamp prepressing and main pressing |
| CN114087247A (en) * | 2021-11-30 | 2022-02-25 | 中色科技股份有限公司 | Self-synchronizing hydraulic system of aluminum strip sewing machine |
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