CN103302136A - Tension-establishing control system of uncoiling machine and method thereof - Google Patents
Tension-establishing control system of uncoiling machine and method thereof Download PDFInfo
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- CN103302136A CN103302136A CN2013102024792A CN201310202479A CN103302136A CN 103302136 A CN103302136 A CN 103302136A CN 2013102024792 A CN2013102024792 A CN 2013102024792A CN 201310202479 A CN201310202479 A CN 201310202479A CN 103302136 A CN103302136 A CN 103302136A
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Abstract
The invention discloses a tension-establishing control system of an uncoiling machine and a method of the tension-establishing control system, and belongs to the technical field of rolling of cold-rolled strips. The system comprises a micro-tension coefficient module, a micro-tension calculation module, a motor-torque amplitude-limiting-value module and a control module, wherein the micro-tension coefficient module is used for determining a micro-tension coefficient according to the thickness of strip steel; the micro-tension calculation module is used for calculating and obtaining a micro-tension value according to the micro-tension coefficient and a tension setting value; the motor-torque amplitude-limiting-value module is used for calculating and obtaining a motor-torque amplitude-limiting value according to the micro-tension value and an actual value of the outer diameter of an upper steel coil of the uncoiling machine; and the control module is used for controlling the motor torque acording to the motor-torque amplitude-limiting value of the uncoiling machine. The tension-establishing control system disclosed by the invention has the advantage that the scratching problem caused by falling of the strip steel when the steel coil penetrates to a coiling machine continuously after being split can be effectively solved.
Description
Technical field
The invention belongs to the cold rolled sheet rolling technical field, particularly a kind of uncoiler is built a control system and method thereof.
Background technology
The Automobile Plate product will be cut the limit and excise the band steel toe tail that falls short of specifications and require before dispatching from the factory, belt steel surface is carried out quality examination and oiling, and adjusts the weight of coil of strip by user's requirement.Rewinding is set accordingly checks unit, the configuration welding machine, circle shear and electrostatic oiler, to smooth rear coil of strip check, side cut, oiling and bundling.Run through like this band steel length that rewinding checks unit just more common rewinding line length nearly one times.The tension force of rewinding inspection unit is provided jointly by uncoiler and the coiling machine of inlet/outlet, common control strategy is as tension force input control target take coiling machine, carry out torque control, uncoiler is that the effect of " stub " is played in speed control, like this prerequisite set up of tension force be the band steel threading arrive coiling machine.
Because configured welding machine, can guarantee needn't every coil threadings all, but to after having produced a volume, excise weld seam; Require bundling according to product weight in addition, so finish the excision of butt welded seam at the outlet place of cutting and realize bundling, after the outlet shearing, need to take the lead threading to carry out the production of next volume to coiling machine, because unit is long and without tension force, the band steel is affected by gravity and certainly will naturally hangs at platform before and after the entrance welding machine and outlet horizon check platform place, and this moment, threading very likely caused scuffing.
Owing to the hang scuffing of the suitable segment distance of head that causes of steel, having restricted the product quality of Automobile Plate, address this problem, must bring considerable economic benefit.
Summary of the invention
Technical problem to be solved by this invention provides a kind of uncoiler and builds a control system and method thereof, has solved in the prior art to check in the unit crossing process at rewinding, and the band steel hangs and causes threading to scratch problem.
For solving the problems of the technologies described above, the invention provides a kind of uncoiler and build a control system, comprise Minimal Tension coefficient module, Minimal Tension computing module, motor torque amplitude limit value module and control module;
Wherein, described Minimal Tension coefficient module is used for determining the Minimal Tension coefficient according to belt steel thickness;
Described Minimal Tension computing module is used for calculating the Minimal Tension value according to described Minimal Tension coefficient and tension force setting value;
Described motor torque amplitude limit value module is used for according to the coil of strip external diameter actual value on described Minimal Tension value and the uncoiler, calculates the motor torque amplitude limit value of described uncoiler;
Control module is used for the motor torque amplitude limit value according to described uncoiler, controls the motor torque of described uncoiler.
Further, the scope of described tension force setting value is 0-40kN.
A kind of uncoiler is built a control method, specifically comprises the steps:
Determine the Minimal Tension coefficient according to belt steel thickness;
According to described Minimal Tension coefficient and tension force setting value, calculate the Minimal Tension value;
According to the coil of strip external diameter actual value on described Minimal Tension value and the uncoiler, calculate the motor torque amplitude limit value of described uncoiler;
According to the motor torque amplitude limit value of described uncoiler, control the motor torque of described uncoiler.
Further, the computational methods of described Minimal Tension value are as the formula (1):
Tw=k×Tsp （1）
Wherein, Tw represents the Minimal Tension value, and unit is kN; K represents the Minimal Tension coefficient, and Tsp represents the tension force setting value, and unit is kN.
Further, the method for described calculating uncoiler motor torque amplitude limit value is as the formula (2):
M=Tw×Dact/2 （2）
Wherein, M represents the motor torque amplitude limit value, and unit is kNm; Tw represents the Minimal Tension value, and unit is kN; Dact represents the coil of strip external diameter actual value on the uncoiler, and unit is m.
Uncoiler provided by the invention is built a control system and method thereof, after can effectively solving coil of strip and cutting, when continuing threading to coiling machine, the scuffing problem that hangs and cause with steel for the scuffing with steel head 50m of taking the lead to cause in the crossing process of coiling machine at every turn, also can be eliminated especially, simultaneously, according to the diverse location of judgement being taken the lead at coiling machine, take without control method, avoid uncoiler and coiling machine to drop into simultaneously tension force and cause control disorder.
Description of drawings
The uncoiler that Fig. 1 provides for the embodiment of the invention is built a control method block diagram.
The specific embodiment
A kind of uncoiler that the embodiment of the invention provides is built a control system, comprises Minimal Tension coefficient module, Minimal Tension computing module, motor torque amplitude limit value module and control module;
Wherein, the Minimal Tension coefficient module is used for determining the Minimal Tension coefficient according to belt steel thickness;
The Minimal Tension computing module is used for calculating the Minimal Tension value according to Minimal Tension coefficient and tension force setting value, and wherein the scope of tension force setting value is 0-40kN;
Motor torque amplitude limit value module is used for according to the coil of strip external diameter actual value on Minimal Tension value and the uncoiler, calculates uncoiler motor torque amplitude limit value;
Control module is used for the motor torque amplitude limit value according to uncoiler, the motor torque of control uncoiler.
Referring to Fig. 1, a kind of uncoiler is built a control method, produces thickness as 1.2mm take rewinding inspection on January 5th, 2013 unit, and the coil of strip external diameter is 1.8m, and steel grade is that the coil of strip of DC01 is example, comprises the steps:
Step 101: determine the Minimal Tension coefficient;
Determine the Minimal Tension coefficient according to belt steel thickness, in embodiments of the present invention, the Minimal Tension coefficient sees Table 1 according to the difference of belt steel thickness, and the Minimal Tension coefficient is 0.5:
Table 1: belt steel thickness and Minimal Tension index variation table
| Belt steel thickness T (mm) | The Minimal Tension coefficient |
| T≦0.5 | 0.4 |
| 0.5<T≦1.0 | 0.45 |
| 1.0<T≦1.5 | 0.5 |
| 1.5<T | 0.55 |
Step 102: calculate the Minimal Tension value;
According to Minimal Tension coefficient and tension force setting value, calculate the Minimal Tension value, wherein, the computational methods of Minimal Tension value as the formula (1):
Tw=k×Tsp （1）
Wherein, Tw represents the Minimal Tension value, and unit is kN; K represents the Minimal Tension coefficient, and Tsp represents uncoiler tension force setting value, and unit is kN;
Wherein, the scope of uncoiler tension force setting value is 0-40kN, and in practice, concrete size is determined by explained hereafter, and automatic setting.In the reality, uncoiler tension force setting value is 23kN,, to calculate according to formula (2), the Minimal Tension value of this coil of strip is 11.5kN.
Step 103: calculate uncoiler motor torque amplitude limit value;
According to the coil of strip external diameter actual value on Minimal Tension value and the uncoiler, calculate uncoiler motor torque amplitude limit value;
Wherein, the method for calculating uncoiler motor torque amplitude limit value is as the formula (2):
M=Tw×Dact/2 （2）
Wherein, M represents the motor torque amplitude limit value, and unit is kNm; Tw represents the Minimal Tension value, and unit is kN; Dact represents the coil of strip external diameter actual value on the uncoiler, and unit is m.
In example of the present invention, the coil of strip external diameter actual value on the uncoiler is 1.8m, and the Minimal Tension value is 11.5kN, and the motor torque amplitude limit value of uncoiler is 10.35kNm like this.
Step 104: the motor torque of control uncoiler;
Before the coiling machine, according to the motor torque amplitude limit value of uncoiler, the motor torque of control uncoiler is realized Minimal Tension, tightens the band steel under the acting in conjunction of Minimal Tension and each Withdrawal roll pressure of unit in band steel head threading; After taking the lead to arrive coiling machine, uncoiler does not allow to drop into tension force, should change of the prior art the building of coiling machine into and tighten the band steel, avoids like this uncoiler and coiling machine to drop into simultaneously tension force and causes control disorder.
Uncoiler provided by the invention is built a control system and method thereof, after cutting, coil of strip before coiling machine, provides Minimal Tension to uncoiler with threading, under the acting in conjunction of Minimal Tension and each Withdrawal roll pressure of unit, the band steel is tauted, solved owing to taking the lead threading during the coiling machine in the prior art, because uncoiler is without building Zhang Gongneng, cause the scuffing problem that hangs without tension force and cause with steel, for the scuffing with steel head 50m of taking the lead to cause in the crossing process of coiling machine at every turn, also can eliminate especially.
It should be noted last that, the above specific embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to example the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. a uncoiler is built a control system, it is characterized in that, comprises Minimal Tension coefficient module, Minimal Tension computing module, motor torque amplitude limit value module and control module;
Wherein, described Minimal Tension coefficient module is used for determining the Minimal Tension coefficient according to belt steel thickness;
Described Minimal Tension computing module is used for calculating the Minimal Tension value according to described Minimal Tension coefficient and tension force setting value;
Described motor torque amplitude limit value module is used for according to the coil of strip external diameter actual value on described Minimal Tension value and the uncoiler, calculates the motor torque amplitude limit value of described uncoiler;
Control module is used for the motor torque amplitude limit value according to described uncoiler, controls the motor torque of described uncoiler.
2. system according to claim 1 is characterized in that, the scope of described tension force setting value is 0-40kN.
3. a uncoiler is built a control method, it is characterized in that, specifically comprises the steps:
Determine the Minimal Tension coefficient according to belt steel thickness;
According to described Minimal Tension coefficient and tension force setting value, calculate the Minimal Tension value;
According to the coil of strip external diameter actual value on described Minimal Tension value and the uncoiler, calculate the motor torque amplitude limit value of described uncoiler;
According to the motor torque amplitude limit value of described uncoiler, control the motor torque of described uncoiler.
4. control method according to claim 3 is characterized in that, the computational methods of described Minimal Tension value as the formula (1):
Tw=k×Tsp （1）
Wherein, Tw represents the Minimal Tension value, and unit is kN; K represents the Minimal Tension coefficient, and Tsp represents the tension force setting value, and unit is kN.
5. control method according to claim 4 is characterized in that, the method for described calculating uncoiler motor torque amplitude limit value as the formula (2):
M=Tw×Dact/2 （2）
Wherein, M represents the motor torque amplitude limit value, and unit is kNm; Tw represents the Minimal Tension value, and unit is kN; Dact represents the coil of strip external diameter actual value on the uncoiler, and unit is m.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103567230A (en) * | 2013-11-12 | 2014-02-12 | 中冶东方工程技术有限公司 | Micro-tension control system and method |
| CN106475423A (en) * | 2015-08-28 | 2017-03-08 | 宝山钢铁股份有限公司 | A kind of Minimal Tension threading control method of cold-rolled orientation silicon steel thin plate |
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| CN103567230A (en) * | 2013-11-12 | 2014-02-12 | 中冶东方工程技术有限公司 | Micro-tension control system and method |
| CN106475423A (en) * | 2015-08-28 | 2017-03-08 | 宝山钢铁股份有限公司 | A kind of Minimal Tension threading control method of cold-rolled orientation silicon steel thin plate |
| CN106475423B (en) * | 2015-08-28 | 2019-05-24 | 宝山钢铁股份有限公司 | A kind of Minimal Tension threading control method of cold-rolled orientation silicon steel thin plate |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |