CN102974512A - Draping degree control method for plate and strip in drying oven of metal plate and strip treatment production line - Google Patents
Draping degree control method for plate and strip in drying oven of metal plate and strip treatment production line Download PDFInfo
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- CN102974512A CN102974512A CN2012101203714A CN201210120371A CN102974512A CN 102974512 A CN102974512 A CN 102974512A CN 2012101203714 A CN2012101203714 A CN 2012101203714A CN 201210120371 A CN201210120371 A CN 201210120371A CN 102974512 A CN102974512 A CN 102974512A
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- drying oven
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- dangling
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Abstract
The invention provides a draping degree control method for strip steel in drying oven, and the method is applied to draping degree control for the strip steel in the drying oven of a metal surface treatment equipment color coating line. The method is characterized in that an ultrasonic distance measuring sensor is utilized to detect height changes of the strip steel in the outlet position of the drying oven and then feedback signals are returned, tension force of the strip steel is indirectly adjusted through adjustment of speed of a tension device and then the draping degree control is achieved. A proportion integration differentiation (PID) function of a frequency transformer is utilized, and thus the advantages that response is fast, use is convenient and parameters are easy to change are achieved, and adjustment can be carried out conveniently in practical applications according to a running condition of the metal plate and strip. Shake is prevented from occurring, high-speed and smooth running of the metal plate and strip in the drying oven is achieved, control precision is optimized and promoted, and the percent of pass of a product is promoted.
Description
Affiliated technical field
The invention belongs to the metal surface treating device technical field, particularly about a kind of metal plate and belt degree of dangling control method for the metal surface treating device drying oven.
Background technology
The even running of metal plate and belt is an important topic of color-coating line electric control system always in the metal plate and belt process for producing Wiring technology section drying oven, metal plate and belt process for producing Wiring technology regulation metal plate and belt surface did not allow to contact any roller before coating after the coating is not dried, in order to avoid the deface coating affects product quality, therefore the continuous metal strip is coated with in the drying oven at primary coat drying oven and face and must remains the nature overhang always, allows slight fuctuation within a narrow range under the prerequisite that does not affect explained hereafter.
The control of metal plate and belt degree of dangling is an important step of metal plate and belt surface-treatment line in the drying oven, the excessive metal plate and belt that means of sag is inadequate at the stove internal tension, metal plate and belt is lax, the fire door that scratches easily, and it is undesired that serious words can cause whole lineman to do; Sag is too little, means that then metal plate and belt tension force is too large in the stove, and serious words can cause tearing broken belt, perhaps affects the metal plate and belt mechanical property and causes quality to reduce.Because line speed is very fast, metal plate and belt high-speed cruising in stove during the production line operation, and the drying oven body of heater is longer, operating metal plate and belt Chang Yinlu internal tension is unstable to fluctuate, the scratch air port in air channel in the stove of metal plate and belt after amplitude can cause applying up and down when serious, so that the metal plate and belt surface tear has influence on product quality; If avoid scratching and increase in the stove up and down draught interval, the consumption that will certainly strengthen like this heat energy increases the cost of product.
Summary of the invention
The purpose of this invention is to provide metal plate and belt degree of dangling control method in a kind of color-coating line drying oven, it can be by detecting to realize the control to metal plate and belt integral body degree of dangling in the drying oven to any degree of dangling of the outer metal plate and belt of drying oven, make the degree of dangling of metal plate and belt in drying oven maintain all the time near the setting value, overcome in the past that the drying oven internal tension is difficult to control in the metal plate and belt process for producing line, the low-quality phenomenon of strip, thermal waste is large, realize the even running of metal plate and belt in drying oven, improve the qualification rate of product.
The technical solution adopted for the present invention to solve the technical problems is: ultrasonic distance-measuring sensor 5 is arranged on drying oven 3 exits, detect drying oven 3 exit metal plate and belt height change and return feedback signal, come Indirect method metal plate and belt tension force by the speed that variable-frequency motor 8 is adjusted tensioning device 4, the control of realization degree of dangling may further comprise the steps:
A: the primary input signal that presets frequency converter 6 according to the speed of requirement, metal plate and belt tension force and the tensioning device 4 of 3 pairs of metal plate and belt degree of dangling of drying oven;
B: ultrasonic distance-measuring sensor 5 is monitored the height change of drying ovens 3 exit metal plate and belts and is returned the real-time Simulation signal to frequency converter 6;
C: the primary input signal of ultrasonic distance-measuring sensor 5 inverse signals and frequency converter 6 compares stack in inner PID adjuster, and the proportional integral by the PID adjuster calculates real-time control signal of backward variable-frequency motor 8 outputs;
D: variable-frequency motor 8 by the speed of reductor 7 adjustment idler rollers 9, so that tensioning device 4 generation speed are poor, thereby changes metal plate and belt tension force according to the control signal that receives, and realizes the control of metal plate and belt degree of dangling.
The metal plate and belt curve is consistent in drying oven 3 interior airduct air port curves and the stove, and the primary input signal of frequency converter 6 is set according to metal plate and belt catenary mathematic(al) representation, metal plate and belt tension force and the metal plate and belt speed of service under the perfect condition; The PID function of frequency converter 6 has been adopted in the relatively stack of feedback signal and primary input signal, and the proportional integral parameter is that mechanical property according to the whole line equipment of production line arranges in the calculating.
The invention has the beneficial effects as follows:
1. the present invention adopts the PID function of frequency converter, has to respond fast, easy to use, the easy characteristics of modification parameter, can adjust according to metal plate and belt ruuning situation easily in actual applications;
2. the present invention can avoid the generation of concussion at the normal fast effective metal plate and belt degree of dangling of regulating in service of production line, realizes metal plate and belt high speed, even running in the drying oven;
3. the present invention can by the adjustment optimization and improvement control accuracy of parameter, improve the qualification rate of product.
Description of drawings
Fig. 1 is metal plate and belt degree of dangling control system control schematic diagram in the color-coating line drying oven
Fig. 2 is catenary curve mathematics coordinate diagram
Fig. 3 is the tension force schematic diagram that point (x, y) is located on the overhang metal plate and belt
Among Fig. 1: 1. a paint roller, 2. metal plate and belt, 3. drying oven, 4. tensioning device, 5. ultrasonic distance-measuring sensor, 6. frequency converter, 7. reductor, 8. variable-frequency motor, 9. idler roller
Among Fig. 2: the normal direction of catenary minimum point is the y axle, the minimum point coordinate be (0, a);
Among Fig. 3: the tension force T that point (x, y) is located on the metal plate and belt, direction is the tangential direction of this point of metal plate and belt catenary.
Specific embodiments
Shown in Figure 1 is metal plate and belt degree of dangling control system control schematic diagram in the color-coating line drying oven, and metal plate and belt 2 enters drying oven 3 after finishing coating through face paint roller 1, and is connected with tensioning device 4, and drying oven 3 interior metal plate and belts are the nature overhang; Tensioning device 4 is made of two idler rollers, and wherein idler roller 9 is connected with variable-frequency motor 8 through reductor 7; Drying oven 3 exits arrange the height change that a ultrasonic distance-measuring sensor 5 is used for measuring drying oven 3 exit metal plate and belts, and the real-time Simulation signal feedback is arrived frequency converter 6; The feedback signal that the primary input signal of frequency converter 6 and ultrasonic distance-measuring sensor 5 return compares stack, by the proportional integral calculating of pi regulator, exports a real-time control signal and is sent to variable-frequency motor 8; Variable-frequency motor 8 is adjusted the speed of idler roller 9 according to the control signal that receives, thereby makes tensioning device 4 produce the control that speed difference changes metal plate and belt Zhang Shixian metal plate and belt degree of dangling.
Shown in Figure 2 is catenary curve mathematics coordinate diagram, and the normal direction of getting the catenary minimum point is the y axle, and the minimum point coordinate is that (0, a), then the catenary mathematic(al) representation is
In the formula
H is catenary minimum point (level) tension force, and ρ is the metal plate and belt line density, i.e. the product of metal plate and belt density and metal plate and belt area of section.
Shown in Figure 3 is point (x on the overhang metal plate and belt, y) the tension force schematic diagram of locating, the tension force T that point (x, y) is located on the metal plate and belt, direction is that the metal plate and belt catenary is in the tangential direction of this point, size is making a concerted effort of horizontal and vertical directions component, horizontal component is used for and metal plate and belt Horizontal Tension H keep balance, vertical stress component be used for balance (0, a) to this point (x, y) the weight ρ s of section metal plate and belt, s is the length of this section metal plate and belt:
The mass density of ρ strip.
Metal plate and belt tension force and drying oven 3 interior airduct air port curves were determined the metal plate and belt catenary mathematic(al) representation under the perfect condition when the present invention normally moved according to production line, by calculating the primary input signal of setting frequency converter 6; When idler roller tension force changes, the big or small direction of each point tension force all changes on the metal plate and belt, the present invention adopts test method, by off-line proportional integral system the response process of unit step signal is obtained metal plate and belt tension model information and forms feedback signal.
Claims (3)
1. be with steel degree of dangling control method in a metal plate and belt drying oven, it is characterized in that: the ultrasonic distance-measuring sensor (5) that is arranged on drying oven (3) exit is for detection of drying oven (3) exit band steel height change and return feedback signal, adjust the speed of tensioning device (4) by variable-frequency motor (8) and come the Indirect method strip tension, the control of realization degree of dangling may further comprise the steps:
A: the primary input signal that the speed with requirement, strip tension and the tensioning device (4) of steel degree of dangling is preseted frequency converter (6) according to drying oven (3);
B: ultrasonic distance-measuring sensor (5) detects the height change of drying oven (3) exit band steel and returns the real-time Simulation signal to frequency converter (6);
C: the primary input signal of ultrasonic distance-measuring sensor (5) inverse signal and frequency converter (6) compares stack in inner PID adjuster, and the proportional integral by the PID adjuster calculates real-time control signal of backward variable-frequency motor (6) output;
D: frequency converter (6) is adjusted the rotating speed of variable-frequency motor (8) according to the real-time control signal that receives, speed by reductor (7) and then adjustment idler roller (9), so that produce speed difference between (4) two rollers of tensioning device, thereby it is poor to change strip tension, realizes the control with steel degree of dangling.
2. band steel degree of dangling control method in a kind of metal plate and belt drying oven as claimed in claim 1, it is characterized in that the proportional integral described in the step c calculate in setup parameter be that mechanical property according to the whole line equipment of production line arranges.
3. band steel degree of dangling control method in one of as claimed in claim 1 or 2 a kind of metal plate and belt drying oven is characterized in that the interior steel plate curve of described drying oven (3) interior airduct air port curve and stove is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101203714A CN102974512A (en) | 2012-04-23 | 2012-04-23 | Draping degree control method for plate and strip in drying oven of metal plate and strip treatment production line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101203714A CN102974512A (en) | 2012-04-23 | 2012-04-23 | Draping degree control method for plate and strip in drying oven of metal plate and strip treatment production line |
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| CN102974512A true CN102974512A (en) | 2013-03-20 |
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| CN2012101203714A Pending CN102974512A (en) | 2012-04-23 | 2012-04-23 | Draping degree control method for plate and strip in drying oven of metal plate and strip treatment production line |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060287A (en) * | 2014-06-24 | 2014-09-24 | 安徽精诚铜业股份有限公司 | Copper strip automatic adjusting pickling line and control method thereof |
| CN104073828A (en) * | 2014-07-15 | 2014-10-01 | 安徽精诚铜业股份有限公司 | Automatic adjusting and integrating copper strip pickling line and control method thereof |
| CN104073829A (en) * | 2014-07-15 | 2014-10-01 | 安徽精诚铜业股份有限公司 | Automatic controlling and adjusting copper belt pickling line and control method thereof |
| CN108508445A (en) * | 2018-06-29 | 2018-09-07 | 成都瑞嘉和科技有限公司 | A kind of detection device that Yellow phosphorus furnace load-bearing steel cable loosens |
| CN109534056A (en) * | 2018-12-18 | 2019-03-29 | 清华大学 | It is a kind of can speed coordination control multiple roll system and its speed coordination control method |
| CN114380105A (en) * | 2022-01-12 | 2022-04-22 | 济南佰思特自动化技术有限公司 | System and method for vertically controlling steel strip based on PID algorithm |
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| JPH0448967A (en) * | 1990-06-18 | 1992-02-18 | Nkk Corp | Controlling method for drying degree of water-soluble coating film on steel plate |
| JPH08196984A (en) * | 1995-01-31 | 1996-08-06 | Kawasaki Steel Corp | Method and apparatus for baking coated steel plate |
| JP2006516472A (en) * | 2003-02-04 | 2006-07-06 | ブルースコープ・スティール・リミテッド | Method for curing aqueous paint coatings at high speed |
| CN102323749A (en) * | 2011-04-28 | 2012-01-18 | 唐山钢铁集团微尔自动化有限公司 | Method for realizing sag control of color-coating production line by speed regulation |
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2012
- 2012-04-23 CN CN2012101203714A patent/CN102974512A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0448967A (en) * | 1990-06-18 | 1992-02-18 | Nkk Corp | Controlling method for drying degree of water-soluble coating film on steel plate |
| JPH08196984A (en) * | 1995-01-31 | 1996-08-06 | Kawasaki Steel Corp | Method and apparatus for baking coated steel plate |
| JP2006516472A (en) * | 2003-02-04 | 2006-07-06 | ブルースコープ・スティール・リミテッド | Method for curing aqueous paint coatings at high speed |
| CN102323749A (en) * | 2011-04-28 | 2012-01-18 | 唐山钢铁集团微尔自动化有限公司 | Method for realizing sag control of color-coating production line by speed regulation |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060287A (en) * | 2014-06-24 | 2014-09-24 | 安徽精诚铜业股份有限公司 | Copper strip automatic adjusting pickling line and control method thereof |
| CN104073828A (en) * | 2014-07-15 | 2014-10-01 | 安徽精诚铜业股份有限公司 | Automatic adjusting and integrating copper strip pickling line and control method thereof |
| CN104073829A (en) * | 2014-07-15 | 2014-10-01 | 安徽精诚铜业股份有限公司 | Automatic controlling and adjusting copper belt pickling line and control method thereof |
| CN108508445A (en) * | 2018-06-29 | 2018-09-07 | 成都瑞嘉和科技有限公司 | A kind of detection device that Yellow phosphorus furnace load-bearing steel cable loosens |
| CN109534056A (en) * | 2018-12-18 | 2019-03-29 | 清华大学 | It is a kind of can speed coordination control multiple roll system and its speed coordination control method |
| CN114380105A (en) * | 2022-01-12 | 2022-04-22 | 济南佰思特自动化技术有限公司 | System and method for vertically controlling steel strip based on PID algorithm |
| CN114380105B (en) * | 2022-01-12 | 2024-04-23 | 济南佰思特自动化技术有限公司 | System and method for vertically controlling steel belt based on PID algorithm |
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Application publication date: 20130320 |