CN202278046U - Displacement control device for lifting roller in plate rolling machine - Google Patents
Displacement control device for lifting roller in plate rolling machine Download PDFInfo
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- CN202278046U CN202278046U CN2011203404583U CN201120340458U CN202278046U CN 202278046 U CN202278046 U CN 202278046U CN 2011203404583 U CN2011203404583 U CN 2011203404583U CN 201120340458 U CN201120340458 U CN 201120340458U CN 202278046 U CN202278046 U CN 202278046U
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Abstract
The utility model discloses a displacement control device for a lifting roller in a plate rolling machine, wherein a displacement closed-loop hydraulic control system is adopted. The device comprises a PLC (programmable logic controller), an HNC (hydraulic numerical controller) 100, a hydraulic cylinder, a proportional valve and a human-machine interface, wherein the hydraulic cylinder is provided with a displacement detection sensor, and the oil channels at the two ends of the hydraulic cylinder are provided with pressure sensors; the manually set target displacement parameter on the human-machine interface is transferred to the HNC100; the HNC100 finishes comparison between an input signal and a feedback signal; a PID (proportional-integral-derivative regulator) adjusts the opening degree and opening direction of the proportional valve; and hydraulic oil enters the hydraulic cylinder through the proportional valve and acts on a piston to control the lifting speed and direction of the roller. The displacement control device disclosed by the utility model can automatically control the lifting action of the roller, and realize a high automation degree; the position of the roller can be dynamically monitored in real time; the precision of the plate rolling technology reaches +/-0.2mm, and the requirements on high efficiency, high precision and high standard in rolled plate production are met; and the device has good overload protection performance and is easy to operate.
Description
Technical field
The utility model relates to a kind of machine part displacement control device, the especially displacement of veneer reeling machine central roll control.
Background technology
Veneer reeling machine is the indispensable plant equipment of mechanized equipment industry, especially container class manufacturing industry, mainly is used for different types of steel plate is rolled into cylindrical shell class mechanical part according to designing requirement, belongs to the machining kind equipment.Roll below the steel plate thickness 180mm by motor-driven or the existing manufacturer production of veneer reeling machine mechanical and that hydraulic hybrid drives in China; Also do not have manufacturer production at home but roll the steel plate thickness all-hydraulic veneer reeling machine above above 180mm, it is blank that especially mechanical, electrical, liquid integrated big specification veneer reeling machine belongs to especially at home.In recent years along with the development of oil refinery industry; Very big variation has taken place in the requirement to the cylindrical shell type component; Require the pressure that diameter is big, cylindrical shell steel plate mother metal thickness thickens, the strength of materials increases, cylindrical shell bears to improve; These are had higher requirement to the capacity of equipment that rolls cylindrical shell undoubtedly, and domestic prior art can not satisfy these requirements.
At present; The displacement of some veneer reeling machine dance roller control is paid (bevel gear) screw leading screw through worm and wormwheel and is paid and carry out, and promptly is provided with worm gear, worm screw in the worm gear case, and leading screw rotation with worm gear in the screw of worm gear center moves up and down; Be machine driving; Its shortcoming is when rolling heavy-gauge sheeting in case overload occurs, may cause veneer reeling machine unit component of machine to damage, i.e. the overload protection poor performance; Some veneer reeling machine dance roller displacement control acts on piston through the hydraulic oil in the hydraulic cylinder and obtains, and is hydraulic drive, and the amount of putting in place is controlled by pressure switch, and its shortcoming is that control accuracy is not high; The many employings of some veneer reeling machine control action button, handle manual operation; Its shortcoming is that automaticity is low, and production efficiency is low, and in the roll bending process; Can only judge and system can not monitor the position of roller in real time through human eye, occur phenomenons such as the improper or sheet material abnormal shape of roll bending curvature easily.
Summary of the invention
The purpose of the utility model is in order to overcome the above-mentioned defective of prior art, to adapt to the manufacturing development need of container class, satisfying the requirement of veneer reeling machine roll bending technological progress.
The utility model provides a kind of veneer reeling machine dance roller displacement control device, technical scheme is:
For the positional precision that guarantees dance roller and the precision of same roller two ends up-down synchronism; The utility model adopts the displacement closed loop hydraulic control system; Application of displacement closed loop control algorithm and self-adaptive pressure control algolithm have designed veneer reeling machine dance roller displacement control device.This apparatus structure comprises PLC controller, HNC100 controller, hydraulic cylinder, proportioning valve, man-machine interface; On the described hydraulic cylinder displacement detecting sensor is installed, and on its two ends oil circuit pressure sensor is installed; The opening of pressure from the on-the-spot pressure sensor survey time, the displacement of displacement transducer survey time, proportioning valve is read in the communication and the control of described PLC controller control whole system, and passes to the man-machine interface display screen to these values; Pass to described HNC100 controller to the artificial displacement of targets parameter of setting on the man-machine interface; HNC100 accomplishes the comparison of roller target location (being input signal) and displacement transducer feedback position (being feedback signal); And carry out PID and regulate; Convert the signal that regulates to voltage signal and output to described proportioning valve, regulate its opening degree and opening direction, hydraulic oil passing ratio valve gets into hydraulic cylinder; Act on piston, speed and direction that the control roller goes up and down.
Described proportioning valve is a hydraulic-driven switching-over high frequency sound proportioning valve, and this proportioning valve has high frequency response characteristic, and reaction speed is fast.Hydraulic pressure switching-over high frequency sound proportioning valve opening direction decision roller is to rise or descending motion, and the input quantity of the openings of sizes decision hydraulic oil of proportioning valve determines the roller elevating movement still slow soon thus.
Adopt the PROFIBUS-DP communication between described PLC controller and the HNC100 controller; Adopt ethernet communication between PLC controller and the man-machine interface.
Described man-machine interface comprises and sets screen and display screen; The operator sets target setting displacement parameter on the screen in man-machine interface; On display screen, monitor the position of roller in real time.
Described PLC controller model is SIEMENS S7-400, and described HNC100 controller adopts the Rexroth product.
The target location that this device only needs operator's input roller to arrive, all the other controls are accomplished automatically, and automaticity is high and simple to operate.This device operating procedure is following:
1. the operator target location that will arrive roller according to technological parameter is arranged on and sets on the screen;
2.PLC controller reads the target location value of setting and sends this value to the HNC100 controller;
3.HNC100 controller converts the target location value of setting to voltage signal and outputs to hydraulic pressure switching-over high frequency sound proportioning valve, hydraulic oil gets into hydraulic cylinder through hydraulic pressure switching-over high frequency sound proportioning valve, and the hydraulic oil in the hydraulic cylinder promotes piston, thereby roller is gone up and down; The HNC100 controller is real-time transmitted to the PLC controller to the roller actual position value simultaneously, and the PLC controller is passed to the man-machine interface display screen to this value and shown;
4. if reached the target location then stop to regulate, if do not reach the target location, the HNC100 controller compares the actual position value of roller and target location value and obtains alternate position spike, carries out PID adjusting elimination deviation then,
Till actual position value is equal with the target location value, make roller remain at desired location.
The utility model is the lifting action of control roll automatically, and automaticity is high; The position of ability real-time dynamic monitoring roller; The roll bending craft precision reaches ± 0.2mm, satisfies efficient, high accuracy, the production requirement of high standard roll bending; The overload protection performance is good; Simple to operate.
Description of drawings
Fig. 1 is the veneer reeling machine fundamental diagram,
Wherein: 1 top roll, 2 lower rolls, 3 front offset rolls, 4 rear side rollers, 5 steel plates, 6 hydraulic cylinders;
Fig. 2 is the displacement closed loop hydraulic control device logic relation picture of the utility model;
Fig. 3 is a displacement closed loop hydraulic control schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
Shown in Figure 1 is the veneer reeling machine fundamental diagram, and top roll 1 is fixing, and lower roll 2 is done vertical displacement movement, and the up-down of front offset roll 3, rear side roller 4 is along orbital motion separately, shown in the dotted line among Fig. 1.Roll in the process at steel plate 5, at first compress steel plate through promoting lower roll 2, the height through up-down front offset roll 3, rear side roller 4 rolls the steel plate of different radii.Plate 5 top roll 1, lower roll 2 in whole forming process are in clamped condition all the time, this just make equipment can be under self peak work capacity to the shaping that twists of the plate of all thickness.
Shown in Figure 2 is displacement closed loop hydraulic control device logic relation picture; The PLC controller is core controller in the utility model; The communication and the control of control whole system; Read the opening of pressure from the on-the-spot pressure sensor survey time, the displacement of displacement transducer survey time, proportioning valve, and pass to the man-machine interface display screen to these values and show; Set the displacement of targets parameter of setting on the screen to the operator in man-machine interface and pass to the HNC100 controller; HNC100 accomplishes the comparison of roller target location and physical location; And carry out PID and regulate; Convert the signal that regulates to voltage signal and output to hydraulic pressure switching-over high frequency sound proportioning valve, regulate the opening degree and the opening direction of hydraulic pressure switching-over high frequency sound proportioning valve, determine that therefore hydraulic oil gets into the direction and the flow of hydraulic cylinder; Hydraulic oil acts on the piston in the hydraulic cylinder, the up-down direction and the speed of control roller.
Wherein, adopt the PROFIBUS-DP communication between PLC controller and the HNC100 controller.Adopt ethernet communication between PLC controller and the man-machine interface.Described PLC controller model is SIEMENS S7-400, and described HNC100 controller adopts the Rexroth product.
Shown in Figure 3 is displacement closed loop hydraulic control schematic diagram, has described the principle of this device.
This device operating procedure is following:
1. the operator target location that will arrive roller according to technological parameter is arranged on and sets on the screen;
2.PLC controller reads the target location value of setting and sends this value to the HNC100 controller;
3.HNC100 controller converts the target location value of setting to voltage signal and outputs to hydraulic pressure switching-over high frequency sound proportioning valve, hydraulic oil gets into hydraulic cylinder through hydraulic pressure switching-over high frequency sound proportioning valve, and the hydraulic oil in the hydraulic cylinder promotes piston, thereby roller is gone up and down; The HNC100 controller is real-time transmitted to the PLC controller to the roller actual position value simultaneously, and the PLC controller is passed to the man-machine interface display screen to this value and shown;
4. if reached the target location then stop to regulate; If do not reach the target location; The HNC100 controller compares the actual position value of roller and target location value and obtains alternate position spike; Carry out PID then and regulate the elimination deviation, till actual position value is equal with the target location value, make roller remain at desired location.
The target location that this device only needs operator's input roller to arrive in operation, all the other controls are accomplished automatically, and automaticity is high and simple to operate.
System adopts the position of position closed loop control roller, and precision can reach ± 0.2mm.So-called position closed loop be exactly the control of system with the mathematical function of position as main reference:
Wherein, u (t) is an output voltage signal, and e (t) is a position error signal, K
pBe proportionality coefficient, T
iBe integration time constant.
Note:
Annotating 1:PLC is the abbreviation of programmable logic controller (PLC), and reality is a kind of industrial control computer, can directly drive general magnetic valve and A.C. contactor, can be used for the Industry Control occasion of various scales.Add the enhancing of plc communication ability and the development of human machine interface technologies, it is easy to form various control system, only just can realize the function of relay circuit easily with small number of switches amount logic control instruction.
Annotating 2:HNC is that the digital hydraulic controller is called for short, and in electric liquid displacement synchronous applications, can satisfy control accuracy and synchronous error requirement, is simple and easy to use.
Annotate the 3:PID adjuster, full name is a proportional integral derivative controller, is the deviation of regulated variable and set-point is carried out ratio, differential and integral operation respectively, gets it and constitutes the analog regulator of continuous signal with the control actuator.The advantage of P: response speed is fast, and adjusting is swift in motion; The advantage of I: it is surplus poor to eliminate; The advantage of D: variation, trend according to deviation signal are moved in advance.
Claims (5)
1. veneer reeling machine dance roller displacement control device, it is characterized in that: this control device comprises PLC controller, HNC100 controller, hydraulic cylinder, proportioning valve, man-machine interface; On the described hydraulic cylinder displacement detecting sensor is installed, and on its two ends oil circuit pressure sensor is installed; The opening of pressure from the on-the-spot pressure sensor survey time, the displacement of displacement transducer survey time, proportioning valve is read in the communication and the control of described PLC controller control whole system, and passes to the man-machine interface display screen to these values; Pass to described HNC100 controller to the artificial displacement of targets parameter of setting on the man-machine interface; It is that input signal and displacement transducer feedback position are the comparison of feedback signal that HNC100 accomplishes the roller target location; And carry out PID and regulate; Convert the signal that regulates to voltage signal and output to described proportioning valve, regulate its opening degree and opening direction, hydraulic oil passing ratio valve gets into hydraulic cylinder; Act on piston, speed and direction that the control roller goes up and down.
2. by the described veneer reeling machine dance roller of claim 1 displacement control device, it is characterized in that: described PLC controller model is SIEMENS S7-400, and described HNC100 controller adopts the Rexroth product.
3. by the described veneer reeling machine dance roller of claim 1 displacement control device, it is characterized in that: adopt the PROFIBUS-DP communication between described PLC controller and the HNC100 controller; Adopt ethernet communication between PLC controller and the man-machine interface.
4. by the described veneer reeling machine dance roller of claim 1 displacement control device, it is characterized in that: described man-machine interface comprises and sets screen and display screen; The operator sets target setting displacement parameter on the screen, the position of real-time dynamic monitoring roller on the man-machine interface display screen in man-machine interface.
5. by the described veneer reeling machine dance roller of claim 1 displacement control device, it is characterized in that: described proportioning valve is a hydraulic-driven switching-over high frequency sound proportioning valve, and this proportioning valve has high frequency response characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203404583U CN202278046U (en) | 2011-09-09 | 2011-09-09 | Displacement control device for lifting roller in plate rolling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203404583U CN202278046U (en) | 2011-09-09 | 2011-09-09 | Displacement control device for lifting roller in plate rolling machine |
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| Publication Number | Publication Date |
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| CN202278046U true CN202278046U (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203404583U Expired - Fee Related CN202278046U (en) | 2011-09-09 | 2011-09-09 | Displacement control device for lifting roller in plate rolling machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814364A (en) * | 2012-09-07 | 2012-12-12 | 四川惊雷压力容器制造有限责任公司 | Automatic control system of plate rolling machine |
| CN103034164A (en) * | 2012-12-21 | 2013-04-10 | 南通金晟元机械制造有限公司 | Technical control system of veneer reeling machine with curved plate and four rollers |
| CN107626781A (en) * | 2017-11-06 | 2018-01-26 | 王赞 | A kind of adjustable four-roll plate bending machine |
| WO2018166274A1 (en) * | 2017-03-16 | 2018-09-20 | 南通蓝岛海洋工程有限公司 | Light-sensitive monitoring and control system for plate-rolling machine, and rolling process for wind-powered steel pipe pile barrel using same |
| CN109702059A (en) * | 2019-03-07 | 2019-05-03 | 江苏龙胜机床制造有限公司 | A kind of veneer reeling machine with pressure roller bending pressure self-test tunable arrangement |
-
2011
- 2011-09-09 CN CN2011203404583U patent/CN202278046U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814364A (en) * | 2012-09-07 | 2012-12-12 | 四川惊雷压力容器制造有限责任公司 | Automatic control system of plate rolling machine |
| CN103034164A (en) * | 2012-12-21 | 2013-04-10 | 南通金晟元机械制造有限公司 | Technical control system of veneer reeling machine with curved plate and four rollers |
| WO2018166274A1 (en) * | 2017-03-16 | 2018-09-20 | 南通蓝岛海洋工程有限公司 | Light-sensitive monitoring and control system for plate-rolling machine, and rolling process for wind-powered steel pipe pile barrel using same |
| CN107626781A (en) * | 2017-11-06 | 2018-01-26 | 王赞 | A kind of adjustable four-roll plate bending machine |
| CN107626781B (en) * | 2017-11-06 | 2024-01-05 | 王赞 | Adjustable four-roller plate bending machine |
| CN109702059A (en) * | 2019-03-07 | 2019-05-03 | 江苏龙胜机床制造有限公司 | A kind of veneer reeling machine with pressure roller bending pressure self-test tunable arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Lanzhou LS Heavy Machinery Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20170909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |