CN114433633A - Tension torque control method and system for sheet coiling unit and electronic equipment - Google Patents
Tension torque control method and system for sheet coiling unit and electronic equipment Download PDFInfo
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- CN114433633A CN114433633A CN202111663876.0A CN202111663876A CN114433633A CN 114433633 A CN114433633 A CN 114433633A CN 202111663876 A CN202111663876 A CN 202111663876A CN 114433633 A CN114433633 A CN 114433633A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 79
- 238000004590 computer program Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000010977 unit operation Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 230000008859 change Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
Abstract
The invention discloses a tension torque control method, a system and electronic equipment for a sheet coiling unit; calculating the real-time winding diameter of the winding machine according to the unit running speed and the winding real-time rotating speed value by acquiring the real-time rotating speed value of the winding machine; comparing the calculated real-time roll diameter with a preset high-tension area roll diameter threshold range, adjusting a tension value according to a comparison result, and controlling the coiling machine to operate according to a set tension value; the tension of the recoiling machine can be adjusted according to the preset tension when the recoiling machine is at different coiling diameters, so that the problems of coil collapse after the strip steel is recoiled are avoided, the yield of sheet products is improved, and the loss rate during transportation and later use is reduced.
Description
Technical Field
The invention relates to the technical field of sheet cold rolling, in particular to a tension torque control method and system for a sheet coiling unit and electronic equipment.
Background
At present, in the continuous production of a sheet wire, because the diameter of a coiling machine is continuously changed, a coiling unit is easy to collapse due to improper tension, if the tension is too large, the sheet is easy to stretch and deform, even break, and the product quality and the transportation and later use are seriously influenced; therefore, the tension of the coiling machine is adjusted in real time, and the product quality can be improved.
Disclosure of Invention
Therefore, an object of the present invention is to provide a method and a system for controlling tension torque of a sheet winding machine set, and an electronic device; the rolling method has the advantages that the rolling problem of the strip steel after rolling is avoided, so that the yield of sheet products is improved, and the loss rate in transportation and later use is reduced.
In order to achieve the above object, the present invention provides a tension torque control method for a sheet winding machine set, comprising the steps of:
s1, acquiring a real-time rotating speed value of the coiler;
s2, acquiring the running speed of the unit;
s3, calculating the real-time winding diameter of the winding machine according to the running speed and the real-time rotating speed value of the winding machine;
s4, comparing the calculated real-time roll diameter with a preset high-tension area roll diameter threshold range, and controlling the recoiling machine to operate according to a preset high-tension area tension value when the real-time roll diameter is smaller than the lower limit of the high-tension area roll diameter threshold range; when the real-time roll diameter falls within the range of the roll diameter threshold of the high tension area, synchronously reducing the tension value according to the increase speed of the real-time roll diameter, so that the tension value is adjusted to a preset tension value of the constant tension area; and when the real-time winding diameter exceeds the upper limit of the winding diameter threshold range of the high tension area, controlling the winding machine to operate according to a preset tension value of the constant tension area.
Further preferably, in S3, the real-time winding diameter of the winding machine is calculated according to the running speed and the real-time rotation speed value, and the following formula is adopted:
D＝V/nπ；
wherein D is the real-time winding diameter of the winding machine, and V is the running speed of the winding machine; and n is the real-time rotating speed value of the coiling machine.
More preferably, in S4, the preset high-tension area roll diameter threshold ranges from D0+20mm to D0+200mm (D0 is the initial roll diameter).
Further preferably, in S4, the preset tension value in the high tension zone is 1.2 to 1.5 times the tension value in the constant tension zone.
Further preferably, in S4, when the real-time winding diameter falls within the threshold range of the winding diameter in the high tension area, the tension value is synchronously decreased according to the increasing speed of the real-time winding diameter, so that the tension value is adjusted to the preset tension value in the constant tension area; the following formula is adopted:
F＝T/D
wherein F is a tension value, and T is a coiling torque when the coiling machine runs according to the output tension value; the initial value of T is the coiling initial torque when the coiling machine runs according to the preset tension value of the high tension area; d is the real-time winding diameter of the winding machine.
The invention also provides a tension torque control system of the sheet coiling unit, which comprises a PLC controller, a rotating speed detector, a coiling machine and a transmission device thereof;
the rotating speed detector is used for acquiring a real-time rotating speed value of the coiling machine;
the PLC is used for calculating the real-time winding diameter of the winding machine according to the running speed of the unit and the real-time rotating speed value of the winding machine; comparing the calculated real-time roll diameter with a preset high-tension area roll diameter threshold range, and controlling the coiling machine to operate according to a preset high-tension area tension value when the real-time roll diameter is smaller than the lower limit of the high-tension area roll diameter threshold range; when the real-time roll diameter falls within the range of the roll diameter threshold of the high tension area, synchronously reducing the tension value according to the increase speed of the real-time roll diameter; when the real-time coil diameter exceeds the upper limit of the coil diameter threshold range of the high tension area, controlling the coiling machine to operate according to a preset tension value of the constant tension area;
the coiling machine and the transmission device thereof operate according to a preset tension value, specifically according to a torque value calculated by a PLC controller; the torque value is calculated by the PLC according to a set tension value and a real-time coil diameter.
Preferably, the PLC controller further includes an input module, and the input module is configured to obtain a high-tension area winding diameter threshold range, a preset high-tension area tension value, a constant-tension area tension value, a unit operation speed, and a real-time rotation speed value, which are input by a user.
Further preferably, the system further comprises a linear speed detection module for monitoring the running speed of the unit in real time.
The invention also provides an electronic device, which comprises a processor, a memory and an input/output module, wherein the memory is used for storing the computer program; the processor is used for realizing the tension torque control method of the sheet coiling unit when the computer program is executed; the input and output module is used for inputting a preset high-tension area winding diameter threshold range, a preset high-tension area tension value, a preset constant-tension area tension value, a unit running speed and a real-time rotating speed value; and the output processor calculates the obtained torque value according to the set tension value and the real-time winding diameter.
Further preferably, the winding device further comprises a winding drive control device which operates by using the torque value calculated by the processor.
Compared with the existing equipment, the tension torque control method, the tension torque control system and the electronic equipment of the sheet coiling unit disclosed by the application have the following advantages at least:
1. the trend of the change of the coil diameter is converted into the sectional control of the tension of the coiling machine, so that the problems of coil collapse of the strip steel after coiling are avoided, the yield of sheet products is improved, and the loss rate during transportation and later use is reduced.
2. The method has the advantages of accurately controlling the coiling tension trend, being convenient to control, easy to correct and the like, thereby effectively increasing and evenly distributing the radial supporting force and the tangential friction force of the steel coil and reducing the coil collapse phenomenon.
Drawings
FIG. 1 is a flow chart of a method of tension torque control for a sheet coiler set according to the present invention.
FIG. 2 is a schematic diagram of the tension torque control system of the sheet coiler set according to the present invention.
FIG. 3(a) is a graph showing the change in the winding diameter of the thin sheet winding machine of the present invention.
FIG. 3(b) is a graph showing the change in tension of the sheet winding machine of the present invention.
FIG. 3(c) is a graph showing a change in winding torque of the sheet winding machine of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
As shown in fig. 1, an embodiment of an aspect of the present invention provides a method for controlling tension and torque of a sheet winding unit, including the following steps:
s1, acquiring a real-time rotating speed value of the coiler;
s2, acquiring the running speed of the unit;
s3, calculating the real-time winding diameter of the winding machine according to the running speed and the real-time rotating speed value;
and S4, comparing the calculated real-time roll diameter with a preset high-tension area roll diameter threshold range, outputting a torque value according to a comparison result, and controlling the operation of the recoiling machine.
Specifically, when the real-time coil diameter is smaller than the lower limit of the high-tension area coil diameter threshold range, controlling the coiling machine to operate according to a preset high-tension area tension value; when the real-time roll diameter falls within the range of the roll diameter threshold of the high tension area, synchronously reducing the output torque according to the increase speed of the real-time roll diameter to enable the tension value to reach a preset tension value of the constant tension area; and when the real-time winding diameter exceeds the upper limit of the winding diameter threshold range of the high tension area, controlling the winding machine to operate according to a preset tension value of the constant tension area.
As shown in fig. 3(a), the real-time winding diameter of the winding machine is calculated according to the linear velocity and the real-time rotation speed value, and the following formula is adopted:
D＝V/nπ；
wherein D is the real-time winding diameter of the winding machine, and V is the linear speed of the winding machine; and n is the real-time rotating speed value of the coiling machine.
Further preferably, the preset high-tension area curl diameter threshold range is D1-D2; d1 is D0+20mm, which is the lower limit of the high tension area curl diameter threshold range; d2 is D0+200mm, which is the upper limit of the high tension area curl diameter threshold range; d0 is the initial coil diameter.
Further preferably, the preset tension value of the high tension area is 1.2-1.5 times of the tension value of the constant tension area.
As shown in fig. 3(b) -3 (c), when the real-time roll diameter falls within the threshold range of the roll diameter in the high tension area, the output torque is synchronously reduced according to the real-time roll diameter increasing speed, so that the tension value is adjusted to the preset tension value in the constant tension area; the following formula is adopted:
F＝T/D
wherein F is a tension value, and T is a coiling torque when the coiling machine runs according to the output tension value; the initial value of T is the coiling initial torque when the coiling machine runs according to the preset tension value of the high tension area; d is the real-time winding diameter of the winding machine.
In a specific embodiment of the invention, the coiling tension of a constant tension area which is increased to 1.2-1.5 times at the coiling initial section is required, a high-density coiling tension area with the thickness of about 20mm is formed in a coil core, and the tension value is gradually reduced to 1.0 time of the coiling constant tension of the steel plate in the process that the thickness of an inner ring of the coil core is 20 mm-200 mm along with the increase of the coiling diameter. According to the model and the tension calculation formula: f (tension) is T (moment)/D (coil diameter).
In this embodiment, when the real-time winding diameter falls within the threshold range of the winding diameter in the high tension area, the reduction of the tension value can be realized by two schemes: scheme 1, keeping the output torque of the coiling machine unchanged, and gradually reducing the tension value along with the increase of the coil diameter; in the scheme 2, the output torque of the coiling machine is synchronously reduced, and the tension value is gradually reduced along with the increase of the coil diameter.
When the thickness in the actual roll core is more than 200 mm; calculating a coiling torque T according to the tension value in the constant tension area, wherein T is F x D, the coiling tension value is a constant value at the moment according to a formula, and the coiling tension value can be ensured to be the constant value only by increasing the torque T continuously along with the increase of the coil diameter D; the method has the advantages that the coiling tension trend can be accurately controlled, so that the radial supporting force and the tangential friction force of the steel coil are effectively increased, and the coil collapse phenomenon is reduced.
As shown in fig. 2, the invention also provides a tension torque control system of a sheet coiling unit, which comprises a coiler, a driving device thereof, a rotating speed detector and a PLC controller;
the rotating speed detector is used for acquiring a real-time rotating speed value of the coiling machine;
the PLC is used for calculating the real-time winding diameter of the winding machine according to the set running speed and the real-time rotating speed value; comparing the calculated real-time roll diameter with a preset high-tension area roll diameter threshold range, and controlling the coiling machine to operate according to a preset high-tension area tension value when the real-time roll diameter is smaller than the lower limit of the high-tension area roll diameter threshold range; when the real-time roll diameter falls within the range of the roll diameter threshold of the high tension area, synchronously reducing the tension value according to the increase speed of the real-time roll diameter; when the real-time coil diameter exceeds the upper limit of the coil diameter threshold range of the high tension area, controlling the coiling machine to operate according to a preset tension value of the constant tension area;
the coiling machine and the transmission device thereof operate according to a preset tension value, specifically according to a torque value calculated by a PLC controller; the torque value is calculated by the PLC according to a set tension value and a real-time coil diameter.
Preferably, the PLC controller further includes an input module, where the input module is configured to obtain a high-tension area winding diameter threshold range, a preset high-tension area tension value, a constant-tension area tension value, a unit operation speed, and a real-time rotation speed, which are input by a user.
Further preferably, the system further comprises a linear speed detection module for monitoring the running speed of the unit in real time.
The invention also provides an electronic device, which comprises a processor, a memory and an input/output module, wherein the memory is used for storing the computer program; the processor is used for realizing the tension torque control method of the sheet coiling unit when the computer program is executed; the input and output module is used for inputting a preset high tension area winding diameter threshold range, a preset high tension area tension value and a preset constant tension area tension value; the running speed and the real-time rotating speed value of the unit; and the output processor calculates the obtained torque value according to the set tension value and the real-time winding diameter.
Further preferably, the winding drive control device is operated by using a torque value calculated by the processor.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A tension torque control method of a sheet coiling unit is characterized by comprising the following steps:
s1, acquiring a real-time rotating speed value of the coiler;
s2, acquiring the running speed of the unit;
s3, calculating the real-time winding diameter of the winding machine according to the running speed and the real-time rotating speed value of the winding machine;
s4, comparing the calculated real-time roll diameter with a preset high-tension area roll diameter threshold range, and controlling the recoiling machine to operate according to a preset high-tension area tension value when the real-time roll diameter is smaller than the lower limit of the high-tension area roll diameter threshold range; when the real-time roll diameter falls within the range of the roll diameter threshold of the high tension area, synchronously reducing the tension value to a preset tension value of the constant tension area according to the increase speed of the real-time roll diameter; and when the real-time winding diameter exceeds the upper limit of the winding diameter threshold range of the high tension area, controlling the winding machine to operate according to a preset tension value of the constant tension area.
2. The tension torque control method of a sheet winding machine set as claimed in claim 1, wherein in S3, the real-time winding diameter of the winding machine is calculated according to the running speed and the real-time rotation speed value, and the following formula is adopted:
D＝V/nπ；
wherein D is the real-time winding diameter of the winding machine, and V is the running speed of the unit; and n is the real-time rotating speed value of the coiling machine.
3. The tension torque control method of a sheet winding machine set of claim 1, wherein in S4, the preset high-tension area roll diameter threshold ranges from D0+20mm to D0+200mm, where D0 is the initial roll diameter.
4. The tension torque control method of a sheet winding machine set as claimed in claim 1, wherein the predetermined tension value in the high tension zone is 1.2 to 1.5 times the tension value in the constant tension zone in S4.
5. The tension torque control method of a sheet winding machine set as claimed in claim 1, wherein in S4, when the live winding diameter falls within the threshold range of the winding diameter in the high tension area, the tension value is synchronously decreased to a preset tension value in the constant tension area according to the live winding diameter increasing speed; the following formula is adopted:
F＝T/D
wherein F is a tension value, and T is a coiling torque when the coiling machine runs according to the output tension value; the initial value of T is the coiling torque when the coiling machine runs according to the preset tension value of the high tension area; d is the real-time winding diameter of the winding machine.
6. A tension torque control system of a sheet coiling unit is characterized by comprising a PLC (programmable logic controller), a rotating speed detector, a coiling machine and a transmission device thereof;
the rotating speed detector is used for acquiring a real-time rotating speed value of the coiling machine;
the PLC is used for calculating the real-time winding diameter of the winding machine according to the set running speed and the real-time rotating speed value; comparing the calculated real-time roll diameter with a preset high-tension area roll diameter threshold range, and controlling the coiling machine to operate according to a preset high-tension area tension value when the real-time roll diameter is smaller than the lower limit of the high-tension area roll diameter threshold range; when the real-time roll diameter falls within the range of the roll diameter threshold of the high tension area, synchronously reducing the tension value according to the increase speed of the real-time roll diameter; when the real-time coil diameter exceeds the upper limit of the coil diameter threshold range of the high tension area, controlling the coiling machine to operate according to a preset tension value of the constant tension area;
the coiling machine and the transmission device thereof operate according to a preset tension value, specifically according to a torque value calculated by a PLC controller; the torque value is calculated by the PLC according to a set tension value and a real-time coil diameter.
7. The tension torque control system of a sheet coiling unit as recited in claim 6, wherein the PLC controller further comprises an input module, and the input module is used for acquiring a high tension area coil diameter threshold range, a preset high tension area tension value, a constant tension area tension value, a unit operation speed and a real-time rotation speed value which are input by a user.
8. The tension torque control system of a sheet winding unit as recited in claim 6, further comprising a line speed detection module for monitoring the unit operating speed in real time.
9. An electronic device comprising a processor, a memory and an input-output module, the memory being configured to store a computer program; the processor is used for implementing the steps of the tension torque control method of the sheet coiling unit as claimed in any one of claims 1 to 5 when executing the computer program, and the input and output module is used for inputting a preset high tension area coil diameter threshold range, a preset high tension area tension value, a preset constant tension area tension value, a unit operation speed and a real-time rotating speed value; and the output processor calculates the obtained torque value according to the set tension value and the real-time winding diameter.
10. The electronic device of claim 9, further comprising a take-up drive control device that operates using the torque value calculated by the processor.
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| CN202111663876.0A CN114433633A (en) | 2021-12-31 | 2021-12-31 | Tension torque control method and system for sheet coiling unit and electronic equipment |
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| CN202111663876.0A CN114433633A (en) | 2021-12-31 | 2021-12-31 | Tension torque control method and system for sheet coiling unit and electronic equipment |
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