CN114130813A - Head tension adjusting method for controlling cutting uniformity of deformed steel bar - Google Patents
Head tension adjusting method for controlling cutting uniformity of deformed steel bar Download PDFInfo
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- CN114130813A CN114130813A CN202111438177.6A CN202111438177A CN114130813A CN 114130813 A CN114130813 A CN 114130813A CN 202111438177 A CN202111438177 A CN 202111438177A CN 114130813 A CN114130813 A CN 114130813A
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- plc
- detector
- rolled piece
- control
- pulse generator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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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
- B21B15/0007—Cutting or shearing the product
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a head tension adjusting method for controlling the cutting uniformity of deformed steel bars, which comprises the following steps: step 1, installing a pulse generator on an active motor, installing a detector between every two racks, connecting the generator with a PLC (programmable logic controller), and connecting the detector with the controller; step 2, after the rolled piece is rolled, detecting that no rolled piece exists on a station by a detector and transmitting a signal to a PLC (programmable logic controller), and sending an instruction to a pulse generator by the PLC to control the rotating speed of the active motor to be increased from v to v 1; and 3, when the next rolled piece bites steel, the detector detects the rolled piece and transmits a signal to the PLC, and the PLC sends an instruction to the pulse generator to control the rotating speed v1 of the active motor to be reduced to v. The invention is implemented by detecting signals and controlling a system. And according to the speed drop characteristics of different frames of the rolling line, the speed is adjusted differently.
Description
Technical Field
The invention belongs to the field of steel rolling, and particularly relates to a head tension adjusting method for controlling the cutting uniformity of deformed steel bars.
Background
In bar production lines, tension control is an important method for control in continuous rolling production. The control of the size, the temperature of a rolled piece, the state of guide and guard and the indexes of a motor all influence the control of tension, in the actual production process, a direct current motor is adopted in a workshop for transmission, the dynamic speed is unstable in equivalent weight, the defect of large motor speed reduction exists, the difficulty of adjusting the tension of a loop is large after the rolled material passes through a rolling mill, the phenomenon of partial stacking of the rolled material is caused, the radian of the material in the loop area is high, the tension value between frames is large, and the influence is brought to the production control.
Disclosure of Invention
The invention aims to solve the technical problem of providing a head tension adjusting method for controlling the cutting uniformity of deformed steel bars aiming at the defects of the background art.
The invention adopts the following technical scheme for solving the technical problems:
a head tension adjusting method for controlling the cutting uniformity of deformed steel bars comprises the following steps:
step 1, installing a pulse generator on an active motor, installing a detector between every two racks, connecting the generator with a PLC (programmable logic controller), and connecting the detector with the controller;
step 2, after the rolled piece is rolled, detecting that no rolled piece exists on a station by a detector and transmitting a signal to a PLC (programmable logic controller), and sending an instruction to a pulse generator by the PLC to control the rotating speed of the active motor to be increased from v to v 1;
and 3, when the next rolled piece bites steel, the detector detects the rolled piece and transmits a signal to the PLC, and the PLC sends an instruction to the pulse generator to control the rotating speed v1 of the active motor to be reduced to v.
Further, the detector is an infrared detector.
Furthermore, a delay module is arranged in the PLC, and when the next rolled piece bites steel, the PLC sends a control instruction to the pulse generator after passing through a delay instruction of the delay module.
Further, the delay time is 500 milliseconds.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
the method is characterized in that a pulse generator is arranged on a main transmission motor, a detector is arranged between every two racks, the tension control of a rolling line is ensured by a method of compensating the speed of a steel biting head in the bar material process through PLC control. The method is implemented by detecting signals and controlling a system. And according to the speed drop characteristics of different frames of the rolling line, the speed is adjusted differently.
Detailed Description
The technical scheme of the invention is further explained in detail as follows:
a head tension adjusting method for controlling the cutting uniformity of deformed steel bars comprises the following steps:
step 1, installing a pulse generator on an active motor, installing a detector between every two racks, connecting the generator with a PLC (programmable logic controller), and connecting the detector with the controller;
step 2, after the rolled piece is rolled, detecting that no rolled piece exists on a station by a detector and transmitting a signal to a PLC (programmable logic controller), and sending an instruction to a pulse generator by the PLC to control the rotating speed of the active motor to be increased from v to v 1;
and 3, when the next rolled piece bites steel, the detector detects the rolled piece and transmits a signal to the PLC, and the PLC sends an instruction to the pulse generator to control the rotating speed v1 of the active motor to be reduced to v. And a delay module is arranged in the PLC, and when the next rolled piece bites steel, the PLC sends a control instruction to the pulse generator after passing through a delay instruction of the delay module. The delay time is 500 milliseconds.
In this embodiment, the detector is an infrared detector.
The method is invented for ensuring the stability of continuous rolling tension, ensuring the cutting uniformity of the deformed steel bar production and improving the quality of finished products.
The method is characterized in that a pulse generator is arranged on a main transmission motor, a detector is arranged between every two racks, the tension control of a rolling line is ensured by a method of compensating the speed of a steel biting head in the process of a bar through PLC control. The method is implemented by detecting signals and controlling a system. And according to the speed drop characteristics of different frames of the rolling line, the speed is adjusted differently. The method comprises the steps that after a stand finishes rolling a material, a detection signal is sent to a system, the system carries out idle speed increasing compensation on the speed when a rolling mill idles, after the next material bites steel, the speed compensation is cancelled after millisecond speed maintaining delay after the signal is detected, the phenomenon of deviated pile of the material after the material is avoided through precise adjustment, the tension is ensured to be stable, and the cutting uniformity of a finished product is improved.
Specific examples are as follows:
it will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the protection scope of the present invention. While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (4)
1. A head tension adjusting method for controlling the cutting uniformity of deformed steel bars is characterized in that: the method comprises the following steps:
step 1, installing a pulse generator on an active motor, installing a detector between every two racks, connecting the generator with a PLC (programmable logic controller), and connecting the detector with the controller;
step 2, after the rolled piece is rolled, detecting that no rolled piece exists on a station by a detector and transmitting a signal to a PLC (programmable logic controller), and sending an instruction to a pulse generator by the PLC to control the rotating speed of the active motor to be increased from v to v 1;
and 3, when the next rolled piece bites steel, the detector detects the rolled piece and transmits a signal to the PLC, and the PLC sends an instruction to the pulse generator to control the rotating speed v1 of the active motor to be reduced to v.
2. The method for adjusting the head tension to control the slicing uniformity of the deformed steel bar according to claim 1, wherein: the detector is an infrared detector.
3. The method for adjusting the head tension to control the slicing uniformity of the deformed steel bar according to claim 1, wherein: and a delay module is arranged in the PLC, and when the next rolled piece bites steel, the PLC sends a control instruction to the pulse generator after passing through a delay instruction of the delay module.
4. The method for adjusting the head tension to control the slicing uniformity of the deformed steel bar according to claim 3, wherein: the delay time is 500 milliseconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111438177.6A CN114130813A (en) | 2021-11-30 | 2021-11-30 | Head tension adjusting method for controlling cutting uniformity of deformed steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111438177.6A CN114130813A (en) | 2021-11-30 | 2021-11-30 | Head tension adjusting method for controlling cutting uniformity of deformed steel bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114130813A true CN114130813A (en) | 2022-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111438177.6A Pending CN114130813A (en) | 2021-11-30 | 2021-11-30 | Head tension adjusting method for controlling cutting uniformity of deformed steel bar |
Country Status (1)
| Country | Link |
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| CN (1) | CN114130813A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258408A (en) * | 1990-03-09 | 1991-11-18 | Nkk Corp | Method and device for controlling impact drop compensation of mandrel mill |
| CN104209343A (en) * | 2014-09-05 | 2014-12-17 | 山西太钢不锈钢股份有限公司 | Control method of compensation speed decrease of hot continuous rolling finish rolling rack |
| CN106424155A (en) * | 2016-09-30 | 2017-02-22 | 安徽马钢自动化信息技术有限公司 | Control method for impact compensation of continuous rolling machine |
| CN107983777A (en) * | 2017-12-08 | 2018-05-04 | 江苏永钢集团有限公司 | A kind of method for control speed being used in steel rolling process |
| CN113070339A (en) * | 2021-04-22 | 2021-07-06 | 中冶赛迪工程技术股份有限公司 | High-speed wire production system and method with reducing and sizing unit |
| CN113369315A (en) * | 2021-06-01 | 2021-09-10 | 阳春新钢铁有限责任公司 | Control method for rolling mill impact speed drop compensation based on direct-current transmission device |
-
2021
- 2021-11-30 CN CN202111438177.6A patent/CN114130813A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258408A (en) * | 1990-03-09 | 1991-11-18 | Nkk Corp | Method and device for controlling impact drop compensation of mandrel mill |
| CN104209343A (en) * | 2014-09-05 | 2014-12-17 | 山西太钢不锈钢股份有限公司 | Control method of compensation speed decrease of hot continuous rolling finish rolling rack |
| CN106424155A (en) * | 2016-09-30 | 2017-02-22 | 安徽马钢自动化信息技术有限公司 | Control method for impact compensation of continuous rolling machine |
| CN107983777A (en) * | 2017-12-08 | 2018-05-04 | 江苏永钢集团有限公司 | A kind of method for control speed being used in steel rolling process |
| CN113070339A (en) * | 2021-04-22 | 2021-07-06 | 中冶赛迪工程技术股份有限公司 | High-speed wire production system and method with reducing and sizing unit |
| CN113369315A (en) * | 2021-06-01 | 2021-09-10 | 阳春新钢铁有限责任公司 | Control method for rolling mill impact speed drop compensation based on direct-current transmission device |
Non-Patent Citations (3)
| Title |
|---|
| 王兵等: "棒材精轧机组的自动控制系统" * |
| 董广龙等: "南钢棒材厂全连轧工艺及改造工程" * |
| 谢邦立等: "基于动态速降双补偿技术的控制策略与实现" * |
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