CN103801751A - Full-automatic plate shearing machine hydraulic system on basis of PLC control - Google Patents

Full-automatic plate shearing machine hydraulic system on basis of PLC control Download PDF

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Publication number
CN103801751A
CN103801751A CN201410088524.0A CN201410088524A CN103801751A CN 103801751 A CN103801751 A CN 103801751A CN 201410088524 A CN201410088524 A CN 201410088524A CN 103801751 A CN103801751 A CN 103801751A
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valve
oil
way
hydraulic
control
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CN201410088524.0A
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CN103801751B (en
Inventor
王存堂
吴桂林
谢方伟
盛刚
钱开矿
李荣堂
宣芮
任乃飞
张西良
任旭东
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NANTONG HENGLI HEAVY INDUSTRIES MACHINERY Co Ltd
Jiangsu University
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NANTONG HENGLI HEAVY INDUSTRIES MACHINERY Co Ltd
Jiangsu University
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Publication of CN103801751A publication Critical patent/CN103801751A/en
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Abstract

The invention relates to a full-automatic plate shearing machine hydraulic system on the basis of PLC (Programmable Logic Controller) control and belongs to the field of plate shearing machine hydraulic systems. The full-automatic plate shearing machine hydraulic system mainly comprises the same first and second shearing cylinders, two same pressing cylinders, a hydraulic control system of the shearing cylinders and the pressing cylinders, and a PLC control system; the hydraulic control system of the shearing cylinders and the pressing cylinders comprises an oil tank, a hydraulic pump, a motor, a one-way valve, a first pressure gauge, a second pressure gauge, a pilot overflow valve, a two-position two-way electromagnetic valve, an energy accumulator, a pressure reducing valve, a travel switch, an overflow valve, a two-position four-way electromagnetic valve and a double hydraulic control one-way valve. According to the invention, the PLC control system is adopted to implement accurate control of the system; the full-automatic plate shearing machine hydraulic system is provided with the non-contact travel switch accurately controlled by the PLC control system, so that a sheet metal is more accurately positioned and quality of the sheared sheet metal is higher.

Description

The fully-automatic plate shearing machine hydraulic system of controlling based on PLC
Technical field
The invention belongs to hydraulic system of cutting machine field, be specially a kind of fully-automatic plate shearing machine hydraulic system of controlling based on PLC.
Background technology
Along with industrial expansion, the automaticity of engineering goods is more and more higher, and the pollution of environment is more and more serious now simultaneously, and the requirement of energy-saving and emission-reduction is also more and more higher, and the two has proposed brand-new requirement and guiding all to the design of engineering goods.At present, the automaticity of large-scale plate shearing machine is low, mostly adopts and manually controls and semiautomatic control, and production efficiency is low, and energy consumption is larger, also more serious to the pollution of environment, and the quality of simultaneously shearing plate is not high yet, can only meet general quality requirement.
Summary of the invention
The object of the invention is for current large-scale plate shearing machine automaticity lowly, the shortcoming such as production efficiency is low, and energy consumption is large, provides the fully-automatic plate shearing machine hydraulic system of controlling based on PLC that a kind of shearing quality is higher, energy consumption is lower, automaticity is higher.
The technical scheme that realizes above-mentioned purpose is: based on the fully-automatic plate shearing machine hydraulic system of PLC control, mainly comprise hydraulic control system and the PLC control system of first, second identical shear cylinder, two identical binder cylinders, shear cylinder and binder cylinders; The hydraulic control system of shear cylinder and binder cylinder comprises fuel tank, hydraulic pump, motor, check valve, the first Pressure gauge, the second Pressure gauge, pilot operated compound relief valve, two-position two-way solenoid valve, accumulator, pressure-reducing valve, travel switch, overflow valve, two-position four-way solenoid valve and dual hydraulic control one-way valve; Described motor is connected with hydraulic pump, the oil-in of hydraulic pump connects fuel tank, the oil-out of the oil-in connecting fluid press pump of check valve, the oil-in of pilot operated compound relief valve connects the oil-out of check valve, the oil-out of pilot operated compound relief valve connects fuel tank, the outside control mouth of pilot operated compound relief valve connects the oil-in of two-position two-way solenoid valve, and the oil-out of two-position two-way solenoid valve connects fuel tank; The pressure hydraulic fluid port P of described two-position four-way solenoid valve is connected with the oil-out of check valve, the oil return inlet T of two-position four-way solenoid valve connects fuel tank, the actuator port A of two-position four-way solenoid valve connects the oil-in A1 of dual hydraulic control one-way valve, the actuator port B of two-position four-way solenoid valve connects the oil-in A2 of dual hydraulic control one-way valve, the actuator port B1 of dual hydraulic control one-way valve connects the rodless cavity of the first shear cylinder, the rod chamber of the first shear cylinder is connected with the rodless cavity of the second shear cylinder, and the rod chamber of the second shear cylinder is connected with the actuator port B2 of dual hydraulic control one-way valve; The oil-in of described pressure-reducing valve is connected with the oil-out of check valve, between the oil-in of pressure-reducing valve and the oil-out of check valve, be connected with accumulator, the oil-out of pressure-reducing valve is connected with oil-in and second Pressure gauge of two binder cylinders, overflow valve respectively, the oil-out of described overflow valve connects fuel tank, described two binder cylinders are single-acting plunger type hydraulic cylinder, and wherein the bottom of a binder cylinder is provided with travel switch; Described two-position two-way solenoid valve, two-position four-way solenoid valve and travel switch are connected with PLC control system respectively, realize automatically and controlling.
Optimally, described travel switch is Contactless stroke switch.
Optimally, between the actuator port B2 of the rod chamber of the second shear cylinder and dual hydraulic control one-way valve, be connected with one-way speed-regulating valve, the oil-in of described one-way speed-regulating valve is connected with the rod chamber of the second shear cylinder, and the oil-out of one-way speed-regulating valve is connected with the actuator port B2 of dual hydraulic control one-way valve.
Beneficial effect of the present invention:
(1) the present invention adopts PLC control system to realize the accurate control of system, and is provided with the Contactless stroke switch of accurately controlling by PLC control system, makes plate location more accurate, and the quality of shearing plate is more excellent.
(2) two binder cylinders of the present invention are provided with accumulator binder cylinder are carried out to pressurize, and the leakage of oil circuit in compensatory shear process, has reduced the consumption of the energy, makes the energy consumption of system lower.
(3) oil return line of two shear cylinders of the present invention is connected to flow speed control valve, makes the decline of the process intermediate slide of shearing plate more steady, and the quality of shearing plate is higher.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present invention.
The specific embodiment
As shown in Figure 1, the present invention mainly comprises hydraulic control system 4 and the PLC control system 5 of identical first, second shear cylinder 1,2, two identical binder cylinders 3, shear cylinder and binder cylinders.
The hydraulic control system 4 of shear cylinder and binder cylinder comprises fuel tank 6, hydraulic pump 7, motor 8, check valve 9, the first Pressure gauge 10, the second Pressure gauge 11, pilot operated compound relief valve 12, two-position two-way solenoid valve 13, accumulator 14, pressure-reducing valve 15, travel switch 16, overflow valve 17, one-way speed-regulating valve 20, two-position four-way solenoid valve 18 and dual hydraulic control one-way valve 19.
Motor 8 is connected with hydraulic pump 7, the oil-in of hydraulic pump 7 connects fuel tank 6, the oil-out of the oil-in connecting fluid press pump 7 of check valve 9, the oil-in of pilot operated compound relief valve 12 connects the oil-out of check valve 9, the oil-out of pilot operated compound relief valve 12 connects fuel tank 6, the outside control mouth of pilot operated compound relief valve 12 connects the oil-in of two-position two-way solenoid valve 13, and the oil-out of two-position two-way solenoid valve 13 connects fuel tank 6.
The pressure hydraulic fluid port P of two-position four-way solenoid valve 18 is connected with the oil-out of check valve 9, the oil return inlet T of two-position four-way solenoid valve 18 connects fuel tank 6, the actuator port A of two-position four-way solenoid valve 18 connects the oil-in A1 of dual hydraulic control one-way valve 19, the actuator port B of two-position four-way solenoid valve 18 connects the oil-in A2 of dual hydraulic control one-way valve 19, the actuator port B1 of dual hydraulic control one-way valve 19 connects the rodless cavity of the first shear cylinder 1, the rod chamber of the first shear cylinder 1 is connected with the rodless cavity of the second shear cylinder 2, the rod chamber of the second shear cylinder 2 is connected with the actuator port B2 of dual hydraulic control one-way valve 19.
The oil-in of pressure-reducing valve 15 is connected with the oil-out of check valve 9, between the oil-in of pressure-reducing valve 15 and the oil-out of check valve 9, be connected with accumulator 14, the oil-out of pressure-reducing valve 15 is connected with oil-in and second Pressure gauge 11 of two binder cylinders 3, overflow valve 17 respectively, the oil-out of overflow valve 17 connects fuel tank 6, two binder cylinders 3 are single-acting plunger type hydraulic cylinder, and wherein the bottom of a binder cylinder 3 is provided with Contactless stroke switch 16; Two-position two-way solenoid valve 13, two-position four-way solenoid valve 18 and travel switch 16 are connected with PLC control system 5 respectively, realize automatically and controlling.
The course of work of the present invention:
1, motor 8 starts, and the electromagnet 1DT of two-position two-way solenoid valve 13 must not be electric, system unloaded, and first, second shear cylinder 1,2 keeps motionless.
2, treat that plate arrives assigned address, Contactless stroke switch 16 dead electricity, the electromagnet 1DT of two-position two-way solenoid valve 13 obtains electric, and fluid enters two binder cylinders 3 plate is compressed.
3, after plate compresses, the electromagnet 2DT of two-position four-way solenoid valve 18 obtains electric, and fluid enters the rodless cavity of two-position four-way solenoid valve 18, and knife rest declines, and shears plate.
4, treat that plate cutting is complete, the electromagnet 2DT dead electricity of two-position four-way solenoid valve 18, the 3DT of two-position four-way solenoid valve 18 obtains electric, and fluid enters the rod chamber of two-position four-way solenoid valve 18, tool rest return stroke.
5, treat that tool rest return stroke is complete, the 1DT dead electricity of two-position two-way solenoid valve 13, system unloaded, the backhaul under self spring action of two binder cylinders 3, Contactless stroke switch 16 electric.

Claims (3)

1. the fully-automatic plate shearing machine hydraulic system of controlling based on PLC, is characterized in that: the hydraulic control system and the PLC control system that mainly comprise first, second identical shear cylinder, two identical binder cylinders, shear cylinder and binder cylinders; The hydraulic control system of shear cylinder and binder cylinder comprises fuel tank, hydraulic pump, motor, check valve, the first Pressure gauge, the second Pressure gauge, pilot operated compound relief valve, two-position two-way solenoid valve, accumulator, pressure-reducing valve, travel switch, overflow valve, two-position four-way solenoid valve and dual hydraulic control one-way valve; Described motor is connected with hydraulic pump, the oil-in of hydraulic pump connects fuel tank, the oil-out of the oil-in connecting fluid press pump of check valve, the oil-in of pilot operated compound relief valve connects the oil-out of check valve, the oil-out of pilot operated compound relief valve connects fuel tank, the outside control mouth of pilot operated compound relief valve connects the oil-in of two-position two-way solenoid valve, and the oil-out of two-position two-way solenoid valve connects fuel tank; The pressure hydraulic fluid port P of described two-position four-way solenoid valve is connected with the oil-out of check valve, the oil return inlet T of two-position four-way solenoid valve connects fuel tank, the actuator port A of two-position four-way solenoid valve connects the oil-in A1 of dual hydraulic control one-way valve, the actuator port B of two-position four-way solenoid valve connects the oil-in A2 of dual hydraulic control one-way valve, the actuator port B1 of dual hydraulic control one-way valve connects the rodless cavity of the first shear cylinder, the rod chamber of the first shear cylinder is connected with the rodless cavity of the second shear cylinder, and the rod chamber of the second shear cylinder is connected with the actuator port B2 of dual hydraulic control one-way valve; The oil-in of described pressure-reducing valve is connected with the oil-out of check valve, between the oil-in of pressure-reducing valve and the oil-out of check valve, be connected with accumulator, the oil-out of pressure-reducing valve is connected with oil-in and second Pressure gauge of two binder cylinders, overflow valve respectively, the oil-out of described overflow valve connects fuel tank, described two binder cylinders are single-acting plunger type hydraulic cylinder, and wherein the bottom of a binder cylinder is provided with travel switch; Described two-position two-way solenoid valve, two-position four-way solenoid valve and travel switch are connected with PLC control system respectively, realize automatically and controlling.
2. the fully-automatic plate shearing machine hydraulic system of controlling based on PLC according to claim 1, is characterized in that: described travel switch is Contactless stroke switch.
3. the fully-automatic plate shearing machine hydraulic system of controlling based on PLC according to claim 1 and 2, it is characterized in that: between the actuator port B2 of the rod chamber of the second shear cylinder and dual hydraulic control one-way valve, be connected with one-way speed-regulating valve, the oil-in of described one-way speed-regulating valve is connected with the rod chamber of the second shear cylinder, and the oil-out of one-way speed-regulating valve is connected with the actuator port B2 of dual hydraulic control one-way valve.
CN201410088524.0A 2014-03-12 2014-03-12 Based on the fully-automatic plate shearing machine hydraulic system that PLC controls Active CN103801751B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105149412A (en) * 2015-09-29 2015-12-16 安徽省三力机床制造股份有限公司 Plate grooving hydraulic shearing machine, as well as hydraulic system and application method of plate grooving hydraulic shearing machine
CN105234472A (en) * 2015-09-22 2016-01-13 广船国际有限公司 Hydraulic system of shearing machine
CN105499684A (en) * 2016-02-03 2016-04-20 江苏龙胜机床制造有限公司 Hydraulic system of plate shearing machine
CN105537664A (en) * 2016-02-03 2016-05-04 江苏龙胜机床制造有限公司 Hydraulic system of plate shearing machine
CN105889166A (en) * 2014-12-18 2016-08-24 无锡锡锻机床有限公司 Series synchronous hydraulic system of numerical control right-angle shearing machine
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
CN106640800A (en) * 2017-01-09 2017-05-10 叶伟强 Hydraulic system applied to hydraulic full-automatic unloading iron cutting machine
CN106975784A (en) * 2017-05-23 2017-07-25 南通利王剪折机床有限公司 Compound transmission plate shearer drive system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000051770A1 (en) * 1999-02-10 2000-09-08 Hydea S.R.L. Sheet-metal shearing machine for great lengths of cut
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
CN102009220A (en) * 2010-07-12 2011-04-13 周建波 Hydraulic transmission device for plate shearing machine
CN201855997U (en) * 2010-11-09 2011-06-08 马鞍山市中亚机床制造有限公司 Plate shearing machine with shearing angle adjusting function
CN203696090U (en) * 2014-03-12 2014-07-09 南通恒力重工机械有限公司 Full-automatic plate shearer hydraulic system based on PLC (programmable logic controller) control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000051770A1 (en) * 1999-02-10 2000-09-08 Hydea S.R.L. Sheet-metal shearing machine for great lengths of cut
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
CN102009220A (en) * 2010-07-12 2011-04-13 周建波 Hydraulic transmission device for plate shearing machine
CN201855997U (en) * 2010-11-09 2011-06-08 马鞍山市中亚机床制造有限公司 Plate shearing machine with shearing angle adjusting function
CN203696090U (en) * 2014-03-12 2014-07-09 南通恒力重工机械有限公司 Full-automatic plate shearer hydraulic system based on PLC (programmable logic controller) control

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889166A (en) * 2014-12-18 2016-08-24 无锡锡锻机床有限公司 Series synchronous hydraulic system of numerical control right-angle shearing machine
CN105234472A (en) * 2015-09-22 2016-01-13 广船国际有限公司 Hydraulic system of shearing machine
CN105149412A (en) * 2015-09-29 2015-12-16 安徽省三力机床制造股份有限公司 Plate grooving hydraulic shearing machine, as well as hydraulic system and application method of plate grooving hydraulic shearing machine
CN105499684A (en) * 2016-02-03 2016-04-20 江苏龙胜机床制造有限公司 Hydraulic system of plate shearing machine
CN105537664A (en) * 2016-02-03 2016-05-04 江苏龙胜机床制造有限公司 Hydraulic system of plate shearing machine
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
CN106640800A (en) * 2017-01-09 2017-05-10 叶伟强 Hydraulic system applied to hydraulic full-automatic unloading iron cutting machine
CN106975784A (en) * 2017-05-23 2017-07-25 南通利王剪折机床有限公司 Compound transmission plate shearer drive system

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