CN103691742A - Method for improving tension fluctuation during rotational process of rotary table of carrousel coiling machine - Google Patents
Method for improving tension fluctuation during rotational process of rotary table of carrousel coiling machine Download PDFInfo
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- CN103691742A CN103691742A CN201310642173.9A CN201310642173A CN103691742A CN 103691742 A CN103691742 A CN 103691742A CN 201310642173 A CN201310642173 A CN 201310642173A CN 103691742 A CN103691742 A CN 103691742A
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Abstract
The invention discloses a method for improving the tension fluctuation during the rotational process of the rotary table of a carrousel coiling machine. The method comprises the following steps: coiling tension of the carrousel coiling machine is analyzed, a coiling tension fluctuation curve is made according to a coiling tension fluctuation value, and the coiling tension is built by the mandrel of the coiling machine and the rotation motor of a turntable together; base points with the same coiling tension fluctuating values and in opposite directions are selected at different angular positions of the turntable, and a tension compensating curve is obtained by using a curve fitting method; a tension compensation dosage determined according to the angles of the turntable and the tension compensating curve is taken as an additional set value for a tension set value to be input into the system for carrying out compensation to the coiling tension caused by the rotation motor of the turntable. The method provided by the invention can greatly improve the tension fluctuation during the rotational process of the rotary table of the carrousel coiling machine, and reduces failure rates of breakage and tension loss.
Description
Technical field
A kind of cold-strip steel automatic technology of the present invention, specifically, relates to a kind of method of the Ka Lunsai of improvement coiling machine turntable rotation process tension fluctuation.
Background technology
At present, in the production of cold-strip steel, the features such as card human relations competition style coiling machine is high with its production efficiency, reeling quality good, floor space is few and one-time investment is low are widely used in high-caliber continous way cold continuous rolling and pickling-cold rolling associating unit, but card human relations competition style coiling machine also has its shortcoming, it is complicated in mechanical structure, during turntable rotation, because tension fluctuation easily occurs broken belt or loses a fault, the in the situation that of high-speed rolling, there is broken belt and lose to open and even likely cause device damage.
Publication number is the patent of invention " Winding Tension Controlling System " of CN102923511A; The utility model patent of publication number CN201842545U " a kind of tension control system based on PLC "; Publication number is the utility model patent " Winding Tension Controlling System " of CN202912497U.
Coiling Tension Control, as the difficult point of cold rolled strip steel production automatic field, from the prior art, is not all carried out careful research to the special coiling process of card human relations competition style coiling machine, and is proposed to be produced by turntable rotation the solution of tension fluctuation.
Summary of the invention
Technical problem solved by the invention is to provide a kind of method of the Ka Lunsai of improvement coiling machine turntable rotation process tension fluctuation, can significantly improve the tension fluctuation of card human relations competition style coiling machine turntable rotation process, reduces broken belt and loses a fault rate.
Technical scheme is as follows:
A method of improving Ka Lunsai coiling machine turntable rotation process tension fluctuation, comprising:
The coiling tension of analyzing card human relations match coiling machine, makes the coiling tension curve of cyclical fluctuations according to coiling tension undulating value, and coiling tension is set up jointly by mandrel for recoiling machine and turntable rotation motor;
In different rotating disks angle position, choose the basic point with coiling tension undulating value equal and opposite in direction, opposite direction, the method for use curve matching obtains tension compensating curve;
According to rotating disk angle and the definite tension compensating amount of tension compensating curve, as the additional set-point of tension force setting value, send into system, the coiling tension that turntable rotation motor is caused compensates.
Further: to choose the value of 10 and coiling tension undulating value equal and opposite in direction, opposite direction as basic point, according to the polygon of 10 points of 10 cardinal point determinations, then the method for use curve matching is compensated curve, compensated curve and coiling tension undulating value equal and opposite in direction, opposite direction.
Further: with arcsine ripple compensation way, tension force setting value to be compensated, reduce turntable rotation process tension fluctuation.
Further: compensated peak is+7.5kN～-5kN that compensation range is 5 °～175 ° of rotating disk angles.
Compared with prior art, the technology of the present invention effect is as follows:
1, the present invention is by the analysis to card human relations competition style coiling machine coiling process, from basic principle, solved the tension fluctuation problem of turntable rotation process.Design feature and operation principle in conjunction with card human relations competition style coiling machine, arcsine ripple tension compensating control method for turntable rotation process has been proposed, filled up home and abroad blank, can significantly reduce that the mistake causing due to turntable rotation is opened, broken belt fault, and the device damage that may cause thus.
2, application of the present invention, estimates can reduce every year consequent waste product, unplanned product more than 100 tons, and 150,000 yuan/year of direct economic benefits, reduce and cause thus device damage rehabilitation expense more than 100,000 yuan.
Accompanying drawing explanation
Fig. 1 is the coiling process figure that blocks human relations competition style coiling machine in the present invention;
Fig. 2 is the tension fluctuation curve map of the SPCC coil of strip of 0.5 * 1230mm in the present invention while batching;
Fig. 3 is tension compensating curve map in the present invention;
Fig. 4 is coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 1.8 * 1500mm compensation;
Fig. 5 is coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 1.0 * 1500mm compensation;
Fig. 6 is coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 0.7 * 1500mm compensation;
Fig. 7 is coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 0.5 * 1500mm compensation;
Fig. 8 is coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 0.39 * 1250mm compensation.
The specific embodiment
The present invention is applicable to the various band steel that use card human relations competition style coiling machine to batch, by the tension force during turntable rotation is controlled, reduce tension fluctuation, reduce broken belt and lose a fault, especially for the Thin Strip Steel of low-tension, tension force improves successful, and this kind of control method is effective equally for bands such as copper, aluminium.
Below with reference to accompanying drawing and preferred embodiment, technical solution of the present invention is elaborated.
As shown in Figure 1, be the coiling process figure that blocks human relations competition style coiling machine in the present invention.
The coiling process of card human relations competition style coiling machine is as follows:
(1) mandrel is connecing volume position, and band steel starts to batch, and tension force is set up;
(2) band coil diameter acquires a certain degree, and by operative employee, sends turntable rotation order, turntable rotation;
(3) turntable rotation is 180 °, and mandrel goes to and batches position, batches until the roll coil of strip is produced complete.
In the situation that rotating disk is motionless, coiling tension is set up by mandrel for recoiling machine, and is independently controlled by it, but at rotating disk from 0 °～180 ° rotary courses, coiling tension is set up jointly by mandrel for recoiling machine and turntable rotation motor.
As shown in Figure 2, be the SPCC coil of strip of 0.5 * 1230mm in the present invention coiling tension curve of cyclical fluctuations figure while batching.
SPCC steel grade: S-steel (Steel), P-plate (Plate), C-cold rolling (cold), the 4th C-regular grade (common), D-punch level (Draw), E-deep-draw level (Elongation).
If the coiling tension not causing for turntable rotation motor in system compensates, there is coiling tension fluctuation, in this example, coiling tension setting value is 30kN, the coiling tension fluctuation being caused by turntable rotation motor as shown in phantom in FIG., fluctuation approximately+7.5kN～-5kN, positive and negative separation is (turntable rotation motor was accelerator before 90 °, after 90 °, was moderating process) in approximately 90 ° of positions of rotating disk, and waveform is quasi-sine-wave.
The present invention be take above-mentioned principle analysis as basis, in conjunction with production practices, draws the tension compensating value for turntable rotation, and the size of offset is contrary with actual tension undulating value, and like this, the two stack can be played the effect of improving tension fluctuation.
As shown in Figure 3, be tension compensating curve map in the present invention.The present invention is increasing a tension compensating value as additional setting in Coiling Tension Control system.Card human relations competition style coiling machine is a complicated mechanical system, and the electric current of turntable rotation motor is carried out to decoupling zero, calculates more difficultly by the tension force component of its generation, and for reducing the complexity of control system, the tension compensating value in the present invention is only relevant with rotating disk angle.
The method of improving Ka Lunsai coiling machine turntable rotation process tension fluctuation, step is as follows:
Step 1: the coiling tension of analyzing card human relations match coiling machine, according to coiling tension undulating value, make the coiling tension curve of cyclical fluctuations, coiling tension is set up jointly by mandrel for recoiling machine and turntable rotation motor;
Step 2: choose the basic point with coiling tension undulating value equal and opposite in direction, opposite direction in different rotating disks angle position, the method for use curve matching obtains tension compensating curve;
According to card human relations competition style coiling machine rotating disk installation site and drive unit feature, with a kind of arcsine ripple compensation way, tension force is set and compensated, reduce turntable rotation process tension fluctuation, continue to optimize tension compensating curve, further reduce the tension fluctuation causing due to Ka Lunsai turntable rotation.
In this preferred embodiment, choose the value of 10 and coiling tension undulating value equal and opposite in direction, opposite direction as basic point, according to the polygon of 10 points of 10 cardinal point determinations, then the method for use curve matching is compensated curve, compensated curve and coiling tension undulating value equal and opposite in direction, opposite direction.
Step 3: send into system according to rotating disk angle and the definite tension compensating amount of tension compensating curve as the additional set-point of tension force setting value, the coiling tension that turntable rotation motor is caused compensates.
Take and produce maximum to batch the card human relations competition style coiling machine that weight is 28 tons of cold-rolled steel coils be example, and the present invention is described further in conjunction with concrete case.In the middle of this system, by various different size strip coiling processes are studied, finally determine that compensated peak is+7.5kN～-5kN, compensation starting point is that rotating disk angle is 5 ° of positions, compensation terminal is that rotating disk angle is 175 ° of positions, final tension compensating curve after debugging.In implementation process, first a mandrel is carried out to tension compensating, another root mandrel control system remains unchanged, to be analyzed.Finally two mandrels are all made to tension compensating.
For thickness, be greater than the band steel of 2.0mm, because its tension value is larger, the tension fluctuation that turntable rotation causes is compared little with actual tension, can not cause adverse effect to equipment operation, therefore choose the conventional belt steel that following five kinds of belt steel thickness are less than 2.0mm and be analyzed, its result is as follows:
Embodiment 1:
As shown in Figure 4, be coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 1.8 * 1500mm compensation.
Steel grade: SPCC, product specification: 1.8 * 1500mm, tension force setting value is 90kN, from compensating with compensation after tension fluctuation situation can find out, through overcompensation, actual tension fluctuation by pact ± 5% before compensating be reduced to ± below 2%.
Embodiment 2:
As shown in Figure 5, be coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 1.0 * 1500mm compensation.
Steel grade: SPCC, product specification: 1.0 * 1500mm, tension force setting value is 57kN, from compensating with compensation after tension fluctuation situation can find out, through overcompensation, actual tension fluctuation by pact ± 14% before compensating be reduced to ± below 3%.
Embodiment 3:
As shown in Figure 6, be coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 0.7 * 1500mm compensation.
Steel grade: SPCC, product specification: 0.7 * 1500mm, tension force setting value is 57kN, from compensating with compensation after tension fluctuation situation can find out, through overcompensation, actual tension fluctuation by pact ± 14% before compensating be reduced to ± below 3%.
Embodiment 4:
As shown in Figure 7, be coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 0.5 * 1500mm compensation.
Steel grade: SPCC, product specification: 0.5 * 1500mm, tension force setting value is 32kN, from compensating with compensation after tension fluctuation situation can find out, through overcompensation, actual tension fluctuation by pact ± 25% before compensating be reduced to ± below 10%.
Embodiment 5:
As shown in Figure 8, be coiling tension correlation curve figure before and after steel grade in the present invention: SPCC, product specification: 0.39 * 1250mm compensation.
Steel grade: SPCC, product specification: 0.39 * 1500mm, tension force setting value is 32kN, from compensating with compensation after tension fluctuation situation can find out, through overcompensation, actual tension fluctuation by pact ± 25% before compensating be reduced to ± below 10%.
Practical application shows, this kind of tension compensating method, for the tension fluctuation successful that improves card human relations competition style coiling machine turntable rotation process, especially for the following Thin Strip Steel of 1.0mm, reduced the mistake causing thus and opened and broken belt fault rate.
Claims (4)
1. a method of improving Ka Lunsai coiling machine turntable rotation process tension fluctuation, comprising:
The coiling tension of analyzing card human relations match coiling machine, makes the coiling tension curve of cyclical fluctuations according to coiling tension undulating value, and coiling tension is set up jointly by mandrel for recoiling machine and turntable rotation motor;
In different rotating disks angle position, choose the basic point with coiling tension undulating value equal and opposite in direction, opposite direction, the method for use curve matching obtains tension compensating curve;
According to rotating disk angle and the definite tension compensating amount of tension compensating curve, as the additional set-point of tension force setting value, send into system, the coiling tension that turntable rotation motor is caused compensates.
2. improve as claimed in claim 1 the method for Ka Lunsai coiling machine turntable rotation process tension fluctuation, it is characterized in that: choose the value of 10 and coiling tension undulating value equal and opposite in direction, opposite direction as basic point, according to the polygon of 10 points of 10 cardinal point determinations, then the method for use curve matching is compensated curve, compensated curve and coiling tension undulating value equal and opposite in direction, opposite direction.
3. the method for improving as claimed in claim 1 Ka Lunsai coiling machine turntable rotation process tension fluctuation, is characterized in that: with arcsine ripple compensation way, tension force setting value is compensated, reduce turntable rotation process tension fluctuation.
4. the method for improving as claimed in claim 3 Ka Lunsai coiling machine turntable rotation process tension fluctuation, is characterized in that: compensated peak is+7.5kN～-5kN that compensation range is 5 °～175 ° of rotating disk angles.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108453139A (en) * | 2018-01-09 | 2018-08-28 | 邯郸钢铁集团有限责任公司 | A kind of Ka Lunsai mandrel for recoiling machine tilting value compensation method stage by stage |
| CN110193532A (en) * | 2019-04-28 | 2019-09-03 | 邯郸钢铁集团有限责任公司 | A kind of quick judgement and control method of reel tension fluctuation |
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| CN102006946A (en) * | 2008-04-17 | 2011-04-06 | 三菱日立制铁机械株式会社 | Carousel reel facility |
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| CN102006946A (en) * | 2008-04-17 | 2011-04-06 | 三菱日立制铁机械株式会社 | Carousel reel facility |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453139A (en) * | 2018-01-09 | 2018-08-28 | 邯郸钢铁集团有限责任公司 | A kind of Ka Lunsai mandrel for recoiling machine tilting value compensation method stage by stage |
| CN108453139B (en) * | 2018-01-09 | 2019-05-03 | 邯郸钢铁集团有限责任公司 | A kind of Ka Lunsai mandrel for recoiling machine tilting value compensation method stage by stage |
| CN110193532A (en) * | 2019-04-28 | 2019-09-03 | 邯郸钢铁集团有限责任公司 | A kind of quick judgement and control method of reel tension fluctuation |
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