CN103723548B - Printing machine rolling tension control process based on convex curve - Google Patents
Printing machine rolling tension control process based on convex curve Download PDFInfo
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- CN103723548B CN103723548B CN201310695051.6A CN201310695051A CN103723548B CN 103723548 B CN103723548 B CN 103723548B CN 201310695051 A CN201310695051 A CN 201310695051A CN 103723548 B CN103723548 B CN 103723548B
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Abstract
The invention discloses a kind of printing machine rolling tension control process based on convex curve, carries out tension force when printing machine winds according to minor function：Wherein, taper tension when F is winding；Taper diameter when D is winding；Coefficient of curvature of the K for curve, practical ranges are 100 900000；α and β is constant.The present invention solves the problems, such as that existing tension control method can effectively increase the precision and yield rate of winding tension so that the volume percent defective that causes of heart Zou is high in wrapup procedure.
Description
Technical field
The invention belongs to printing machinery and control technology field, are related to a kind of printing machine winding tension control based on convex curve
Method processed.
Background technology
The winding taper tension of existing unit type press is mainly based on the straight-line decline of linear function.Linear
Power mould taper control is more stable in principle, and the value of tension force reduces with the increase of take-up diameter, for some normal process
This mould taper control of printing product can meet printing requirement, but the printing product required for some special process is with linear this
Plant tension taper degree control or some are not enough, the problems such as volume heart wrinkles such as occurs.
Prior art《A kind of nonlinear rolling tension control process》In be related to the nonlinear Control of winding tension, but existing
There is control too fast in the rate of decay of coil diameter winding tension in the range of 200mm-450mm, and in 450mm-800mm coil diameter models
Enclose that the interior rate of decay is too slow, so can the material big to deformation quantity to cause to roll up tension force in the range of heart 200mm-450mm too little, and
Too big in 450mm-800mm coil diameter scope internal tensions, so cause " cabbage heart " phenomenon.
In order to further improve the precision of winding tension mould taper control, reduce the percent defective that volume heart wrinkle and " cabbage heart " are caused,
We have proposed winding tension evagination line traffic control.
Content of the invention
It is an object of the invention to provide a kind of printing machine rolling tension control process based on convex curve, solves existing
Force control method can cause in wrapup procedure the high problem of the percent defective that volume heart Zou causes, and effectively increase the precision of winding tension
And yield rate.
The technical solution adopted in the present invention is, based on the printing machine rolling tension control process of convex curve,
Tension force is carried out when printing machine winds according to minor function：
Wherein, taper tension when F is winding；Taper diameter when D is winding；Coefficient of curvature of the K for curve, reality should
It is 100-900000 with scope；α and β is constant.
The present invention be further characterized in that,
Constant α and β are according to initial parameters during winding and to terminate parameter determination, and specific determination method is：
By taper initial diameter D0With taper initial tension F0Substitute intoIn,
Obtain,
Taper is terminated diameter DeTerminate tension force F with tapereSubstitute intoIn,
Obtain,
Solution（1）Formula and（2）The equation group of formula composition, can obtain
When tension force is carried out,
As D≤D0When, control tension force F=F0；
As D >=DeWhen, control tension force F=Fe；
As D ∈ (D0,De) when, tension force is carried out according to such as minor function：
The invention has the beneficial effects as follows, this evagination line traffic control is adapted to the little printing material of deformation quantity, can solve
The volume heart Zou's problem produced during winding splicing, and the upper convex curve display function of man-machine interface and current tensile are with volume
The numerical monitor of footpath change more seems simple and clear, facilitates operation adjustment, more humane.
Description of the drawings
Fig. 1 is the function model curve synoptic diagram of the printing machine rolling tension control process based on convex curve of the present invention；
Fig. 2 be in prior art nonlinear tension control method tension decay and coil diameter increase between function relation figure；
Fig. 3 is function relation figure between the tension decay of prior art linear line equation and coil diameter increase；
Fig. 4 is tension force data and curves of the present invention based on output in the printing machine rolling tension control process of convex curve
Figure；
Fig. 5 is actual electric Proportion valve output in the printing machine rolling tension control process based on sag vertical curve of the invention
The curve map of force data；
Fig. 6 is the structure of the control device used in the printing machine rolling tension control process based on convex curve of the present invention
Schematic diagram；
Fig. 7 is the tenslator used in the printing machine rolling tension control process based on convex curve of the present invention
The schematic diagram of control system；
Fig. 8 is the host computer of the control device used in printing machine rolling tension control process of the present invention based on convex curve
The real-time strain controlling curve figure of display；
Fig. 9 is invention based on the 1st group of data in the printing machine rolling tension control process embodiment of sag vertical curve
Function relation figure between the tension force obtained when being produced and coil diameter；
Figure 10 is that the present invention is given birth to based on the 1st group of data in the printing machine rolling tension control process embodiment of sag vertical curve
Function relation figure between the tension force obtained during product and coil diameter.
In figure, 1. programmable controller PLC, 2. winds pendulum rod, 3. low rubbing cylinder, 4. 5. host computer HMI of sensor, 6.
Expect film, 7. winding motor, 8. electric Proportion valve, 9. winding frequency converter.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
The printing machine rolling tension control process based on convex curve of the present invention, as shown in figure 1, its function model is inverse ratio
Example functionAt one of third quadrant, when tension force y represents winding tension F, when x represents take-up diameter D, obtain
By functionIn x-axis direction to α unit of right translation, translate in the y-axis direction β unit can obtain one first as
The convex curve of limitK then represents the coefficient of curvature of curve, the scope in actual production be 100～
900000, set according to specific material character.
During printing machine is wound, taper initial diameter D that winding is set when initial0With taper initial tension
F0Point on respective function curve is P (D0, F0), the taper at the end of winding terminates diameter DeTerminate tension force F with tapereCorresponding
Point on function curve is Q (De, Fe), K values are selected according to the property of material and requirement,
Because,
So,By above-mentioned P (D0, F0) and Q (De, Fe) value substitute into function, can obtain：
Solution（1）Formula and（2）The equation group of formula composition, can obtain
The value of α and β is substituted intoIn, can obtain
Winding during tension force is as carried out based on the printing machine rolling tension control process of convex curve using the present invention
Relation function between tension force and take-up diameter.
In actual production process,
Taper initial diameter D0Terminate diameter D with tapereUnit be cm, be accurate to 0.1cm；Span be 0～
1000mm.
Taper initial tension F0Terminate tension force F with tapereUnit is ‰, is accurate to 1 ‰, and span is：1 ‰～
1000‰.
Setting value of the K values for the coefficient of curvature of controlling curve degree of crook, span is：100～900000.
The function curve is unlimited extension, will carry out amplitude limit to curve in actual use, when coil diameter is less than or equal to cone
Spend initial coil diameter D0When, current tensile value is taken for initial tension F0；When coil diameter terminates coil diameter D more than or equal to tapereWhen, take current
Tension value is end tension force Fe；When coil diameter is in D0And DeInterval in when select corresponding convex curve, i.e.,：
As D≤D0When, F=F0；
As D >=DeWhen, F=Fe；
As D ∈ (D0,De) when select convex curveFollowing algorithm is adopted：
The printing machine rolling tension control process based on convex curve of the present invention, the tension control method phase with prior art
Than the control to tension force is more accurate.As shown in Fig. 2 function relation figure between the tension decay of prior art and coil diameter increase,
In figure, the functional expression of tension force and coil diameter non-linear relation is：Wherein D0
For initial diameter, F0For initial tension, D is current diameter, and F is current tensile, and K is tension decay rate.In the actually used skill
There are problems that during art following：1. whole tension curve change procedure is not directly perceived；2. the corresponding tension value size of diameter is terminated
Uncertain；3. in whole process, the attenuation rate of tension force, initial tension, end tension force can not be taken into account simultaneously.Therefore can not be good
The winding tension of some special materials is mated well.
Fig. 3 is then function relation figure between the technology straight line control tension decay of prior art and coil diameter increase, opens in figure
The functional expression of power and coil diameter non-linear relation is：Wherein D0For initial diameter, F0
For initial tension, D is current diameter, and F is current tensile, wherein DeFor terminating diameter, FeFor terminating tension force.Prior art straight line
After control determines initial parameters and terminates parameter, control process just can not change, and not adapt to the soft spy of printing material itself
Property.
And the printing machine rolling tension control process based on convex curve of the present invention,
Shown in Fig. 4 be by winding parameter setting be table 1 in data when, by the present invention tension control method in
After function is set, the tension force data evagination line chart of the output that control algolithm is obtained.Convex curve 1 and convex curve 2 in figure
When the 1st group of tension force setup parameter of difference and the 2nd group of tension force setup parameter, according to the theoretic tension force that control algolithm is obtained
Output evagination line chart.
Fig. 5 is then actual electric Proportion valve output in the printing machine rolling tension control process based on convex curve of the invention
Tension signal is in evagination line chart, and in figure, convex curve 1, convex curve 2 are respectively and enter line parameter according to the 1st group of data in table 1 and the 2nd group
During setting, the tension curve figure of the actual electric Proportion valve output obtained by test in actual production.
Table 1
From Fig. 4 and Fig. 5 by contrast as can be seen that using tension control method of the invention, in actual production, tension force
Controlling curve and the curve map of electric Proportion valve output tension signal of reality fit like a glove, actual tension force output completely may be used
To reach the target of control.
It is achieved by tenslator as shown in Figure 6, the structure of the control device is：The core parts of control
For programmable controller PLC 1；The winding pendulum rod 2 of control winding；For controlling the low rubbing cylinder 3 of winding pendulum rod；Sensor 4
For sensing the floating of the winding pendulum generation of roller 2 and producing value of feedback, the effect of host computer HMI5 is for setting and showing winding
Tension parameterses, carry out the monitor in real time of parameter setting and tension variation curve；Material film 6；Winding motor 7；Electricity by analog quantity
Signal is converted to the electric Proportion valve 8 of the pressure signal of air；Winding frequency converter 9, Fig. 7 are the control systems of the tenslator
The schematic diagram of system.
The tenslator carries out the operation principle and process of tension force：On host computer HIM5 according to actual needs
After setting with reference to coefficient, the core parts PLC1 of control is exported to winding tension according to the parameter and current coil diameter that set
Control, PLC control system 1 tension value is exported in the form of analog quantity after program calculation by the parameter of host computer HMI to
Electric Proportion valve 8, electric Proportion valve 8 convert electrical signals to air pressure and are reacted on low rubbing cylinder 4, low rubbing cylinder 4
Corresponding pressure is passed to winding pendulum rod 2 in the form of thrust by cylinder arm, winding pendulum rod 2 pulls material with tension force to the right
Film 6；Winding motor 7 that simultaneously PLC1 is controlled by controlling winding frequency converter 9 is fed film 6 one to the left in the form of winding
Tension force, material film 6 reach balance between two forces in the presence of two tension force, if the force unbalance of material film 6, pendulum roller 2 is with left and right
Deviation is informed sensor 4 by the form of swing, and value of feedback is transferred in the form of analog quantity sensor 4 PLC1, PLC1
The rotating speed of winding motor 7 is controlled again by controlling winding frequency converter 9, motor 7 rotates to control the tension force for expecting film by coiling,
So as to reach the equalization of strain of pendulum 2 tension force of roller and motor 7, realize that winding is steady and wind.
Fig. 8 is the tension force curve for showing in wrapup procedure in real time that the man-machine interface of apparatus of the present invention shows
Figure, can be clearly seen that current various parameters, such as from the interface：
TS（‰）For winding the setting value of taper initial tension, unit is ‰, is accurate to 1 ‰, setting range is 1 ‰-
1000‰；
DS (cm) is the setting value for winding taper initial diameter, and unit is cm, is accurate to 0.1cm, and setting range is 0-
100.0cm；
TE（‰）Terminating the setting value of tension force for winding taper, unit is ‰, be accurate to 1 ‰, setting range is 1 ‰-
1000‰；
DE (cm) is to wind the setting value that taper terminates diameter, and unit is cm, is accurate to 0.1cm, and setting range is 0-
100.0cm；
Setting value of the K values for the coefficient of curvature of controlling curve degree of crook, setting range is 100-900000.
After parameter setting, in the curve map of display, abscissa represents coil diameter, unit for centimetre, ordinate represents tension force, single
Position is 1 ‰；Vertical line is removable scale, can check the respective value of tension force and coil diameter；Parameter and algorithm determine man-machine boundary later
Face can accurately show current coil diameter value D (cm) and current tension value T（‰）.
Embodiment
As shown in table 2, two groups of initial setting datas are chosen, and then the functional relation by tension force with coil diameter calculates number
According to obtaining the function relation figure between Fig. 7, Fig. 8, Fig. 9 tension force and coil diameter.
The primary data of two groups of settings that table 2 is chosen
Can see from Fig. 9, Figure 10, the Changing Pattern of tension force convex curve is consistent substantially with Fig. 6, coefficient of curvature K values are right
Significantly effect is played in the curvilinear motion of this control process, and in force, shows intelligently, in real time evagination in man-machine interface
Line, intuitive display understand, easy to operate；Setting value is initial diameter, tension force, terminates diameter, tension force, meets traditional operation and practises
Used, and be easy to control whole tension decay process.
Therefore, convex curve taper tension control method of the invention is complied fully with during tension force to winding tension
Require, winding quality is significantly improved, and taper curve intuitive display, with huge using value and economic Popularizing of A.
Claims (1)
1. a kind of printing machine rolling tension control process based on convex curve, it is characterised in that when printing machine winds according to
Minor function carries out tension force：
Wherein, taper tension when F is winding；Taper diameter when D is winding；Coefficient of curvature of the K for curve, practical application model
Enclose for 100-900000；α and β is constant；
Described constant α and β are according to initial parameters during winding and to terminate parameter determination, and specific determination method is：
By taper initial diameter D0With taper initial tension F0Substitute intoIn,
Obtain,
Taper is terminated diameter DeTerminate tension force F with tapereSubstitute intoIn,
Obtain,
Solution (1) formula and the equation group of (2) formula composition, can obtain
When tension force is carried out,
As D≤D0When, control tension force F=F0；
As D >=DeWhen, control tension force F=Fe；
As D ∈ (D0,De) when, tension force is carried out according to such as minor function：
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016028660A1 (en) | 2014-08-20 | 2016-02-25 | Corning Incorporated | Methods of forming shaped glass articles from glass sheets |
| CN104553306B (en) * | 2014-12-25 | 2017-08-01 | 陕西北人印刷机械有限责任公司 | A kind of printing machine variable tension control method |
| CN108249189B (en) * | 2017-12-29 | 2019-07-16 | 陕西北人印刷机械有限责任公司 | A kind of rewinding double tapered control method |
| CN110963346A (en) * | 2019-09-30 | 2020-04-07 | 陕西北人印刷机械有限责任公司 | Material receiving taper tension control system and control method |
| CN110817548B (en) * | 2019-09-30 | 2021-06-08 | 陕西北人印刷机械有限责任公司 | Receive material tension control system with multiple tension control mode |
| CN110817541B (en) * | 2019-09-30 | 2021-07-23 | 陕西北人印刷机械有限责任公司 | Method for controlling piecewise linear attenuation of receiving tension |
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| CN101306773A (en) * | 2008-06-30 | 2008-11-19 | 陕西北人印刷机械有限责任公司 | Nonlinear rolling tension control process |
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| JPS5917450A (en) * | 1982-07-22 | 1984-01-28 | Sumitomo Heavy Ind Ltd | Web winding machine |
| JPS5982256A (en) * | 1982-10-29 | 1984-05-12 | Fuji Tekkosho:Kk | Tension control device of winding machine |
| JP2627078B2 (en) * | 1988-10-11 | 1997-07-02 | 東芝機械株式会社 | Winding machine tension control device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306773A (en) * | 2008-06-30 | 2008-11-19 | 陕西北人印刷机械有限责任公司 | Nonlinear rolling tension control process |
| CN102730461A (en) * | 2012-07-03 | 2012-10-17 | 中材科技股份有限公司 | Large package control equipment for coiling organic membrane and method |
| CN203199756U (en) * | 2012-12-18 | 2013-09-18 | 陕西北人印刷机械有限责任公司 | Material recovering tension and conicity control device |
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