CN113275386A - Adjusting method and adjusting device for high-speed wire pre-finishing roll gap - Google Patents
Adjusting method and adjusting device for high-speed wire pre-finishing roll gap Download PDFInfo
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- CN113275386A CN113275386A CN202110484393.8A CN202110484393A CN113275386A CN 113275386 A CN113275386 A CN 113275386A CN 202110484393 A CN202110484393 A CN 202110484393A CN 113275386 A CN113275386 A CN 113275386A
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- 238000005096 rolling process Methods 0.000 description 28
- 229910000831 Steel Inorganic materials 0.000 description 6
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- 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
- B21B37/58—Roll-force control; Roll-gap control
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Abstract
The invention discloses an adjusting method and an adjusting device for a high-speed wire pre-finishing roll gap. The PLC controller is communicated with the touch input display screen and used for setting the rotating direction and the input rotating stroke of the stepping motor, after a motor shaft of the stepping motor rotates, power is transmitted to the roll gap adjusting transmission rod through the coupler, the roll gap adjusting transmission rod sequentially transmits the power to a roll gap connecting rod of a roll to be pre-finished through the reducing sleeve, the roll collar is driven to move, and the size of the roll gap is adjusted to a set value. The adjusting method and the adjusting device for the high-speed wire pre-finishing roll gap can adjust the roll gap in a full-automatic mode, and are simple to operate and high in adjusting precision.
Description
Technical Field
The invention belongs to the technical field of rollers, and particularly relates to a method and a device for adjusting a high-speed wire pre-finishing roller gap.
Background
The wire rod is one of hot rolled steel sections with the smallest section size, and hot rolled round steel which is coiled and supplied with the diameter of 5-9 mm is generally called the wire rod in China. Wire is also called wire rod because it is delivered as a coil.
Wire rod rolling mills are special rolling mills for rolling wire rods, and wire rods can be classified into high-speed wire rods and ordinary wire rods according to the difference of the rolling mills. The high-speed wire rod, namely the high-speed wire rod, is usually a wire rod rolled by a high-speed twistless rolling mill, the rolling speed of the high-speed wire rod is 80-160 m/s, the weight of each wire rod is 1.8-2.5 tons, the dimensional tolerance precision is high, and products with different parameter requirements can be manufactured by adjusting the process in the rolling process.
The rolled piece is rolled into a finished product from a blank, the total elongation coefficient is large, and the rolled piece is usually rolled on each rolling mill for one time, so that the wire rolling mill is the rolling mill with the largest number of racks and the finest division in the hot rolled section, and can be generally divided into a rough rolling mill group, a medium rolling mill group and a finishing rolling mill group.
In a high-speed wire rod production line, a pre-finishing mill group is arranged in front of a finishing mill group in order to enable the work of the finishing mill group to be more stable. The pre-finishing mill group is mainly used for receiving incoming materials of the roughing mill group and the intermediate mill group and conveying material types with higher dimensional accuracy of the section of the finishing mill group, so that the pre-finishing mill group requires micro-tension rolling, and the hole pattern size is higher than those of the roughing mill group and the intermediate mill group.
The roll gap adjustment is a key link in the process of wire rod rolling technology, when the rolling mill is used, the roll gap needs to be adjusted, so that a rolled piece after rolling reaches a required section size, and the precision of the roll gap adjustment is in direct proportion to the surface quality of a steel product. The general roughing mill group and the middle mill group are provided with a roll gap device, and the roll gap pressure and release amount of the finishing mill group is not large, so that the roughing mill group, the middle mill group and the finishing mill group adopt a mode of manually adjusting the roll gap, only a pre-finishing mill group is provided, and the existing roll gap adjusting device cannot meet the use requirement because the required roll gap adjusting amount is large, and the following defects exist:
1. the traditional method uses manual work to adjust the pre-finishing roll gap, has large error and low efficiency, and particularly when roll collars with large and small roll diameters need to be replaced, because the roll gap adjustment amount is large, the manual setting is time-consuming and labor-consuming, the daily maintenance time of a steel rolling workshop is increased, the operation efficiency of the steel rolling workshop is reduced, and the productivity is hindered; if the method for adjusting the size of the roll gap by sleeving the roll gap with the variable-frequency motor and pressing and releasing the connecting rod is used, the start and stop of the variable-frequency motor are manually operated to adjust the enlargement and reduction of the roll gap, the roll gap adjusting effect is limited by the level of an operator, the numerical value of the roll gap cannot be accurately adjusted, and the adjusting error is large.
2. The production of wire rods is mainly continuous, the number of rolling mills in a wire rod workshop is large, the modern continuous wire rod rolling mill group generally consists of 21-28 rolling mills, wherein the pre-finishing mill generally occupies about 4, 1 roll gap adjusting device is required to be arranged on each 1 pre-finishing mill, and 4 roll gap adjusting devices are required to be arranged on one continuous wire rod production line, so that the production cost and the maintenance cost of the steel rolling workshop are greatly increased; meanwhile, if the roll gap adjusting device is damaged, the whole rolling mill needs to be disassembled and repaired, which wastes time and labor.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a device for adjusting a high-speed wire pre-finishing roll gap, aiming at the defects of the prior art, wherein the method and the device for adjusting the high-speed wire pre-finishing roll gap can be used for adjusting the size of the roll gap in a full-automatic mode, and have the advantages of simple operation and high adjustment precision.
In order to solve the technical problems, the invention adopts the technical scheme that:
a method for adjusting a high-speed wire pre-finishing roll gap specifically comprises the following steps:
the method comprises the following steps of firstly, adjusting the height of a hydraulic lifting trolley, and aligning the central axis of a motor shaft of a stepping motor on the hydraulic lifting trolley with the central axis of a roll gap connecting rod of a pre-finishing roll.
And secondly, starting the PLC, sending an adjusting instruction to the stepping motor controller by the PLC, and outputting a uniform pulse signal to a stepping motor driver after receiving the adjusting instruction of the PLC by the stepping motor controller.
And thirdly, converting the pulse signal received from the stepping motor controller into a strong current signal by the stepping motor driver, and transmitting the strong current signal to the stepping motor.
And fourthly, after the stepping motor receives the strong current signal sent by the stepping motor driver, driving a motor shaft of the stepping motor to rotate.
And fifthly, after a motor shaft of the stepping motor rotates, transmitting power to a roll gap adjusting transmission rod through a coupler, and sequentially transmitting the power to a roll gap connecting rod of the pre-finishing roll through a reducing sleeve to finish the adjusting operation.
And sixthly, repeating the first step to the fifth step, and adjusting the roll gap for multiple times until the preset requirement for pressing and releasing the roll gap is met.
An adjusting device of an adjusting method of a high-speed wire pre-finishing roll gap comprises a hydraulic lifting trolley, a hydraulic cylinder, a control box, a stepping motor and a roll gap adjusting transmission rod.
The hydraulic lifting trolley comprises a frame, universal wheels are mounted at the bottom of the frame, a brake system for controlling the hydraulic lifting trolley to start and stop is further arranged, the brake system is communicated with the universal wheels, the brake system is closed, the universal wheels roll to drive the hydraulic lifting trolley to move, the brake system is started, the universal wheels stop moving, and the hydraulic lifting trolley is positioned in a specified working area at the moment.
The hydraulic lifting trolley is provided with a base frame, supporting plates are arranged on the two side brackets of the base frame, a control box is arranged on the surface of each supporting plate, and a PLC (programmable logic controller), a stepping motor controller and a stepping motor driver are arranged in the control box.
And a hydraulic cylinder is arranged on the support frame of the frame close to the bottom and is used for controlling the lifting of the hydraulic lifting trolley.
And a support plate is also arranged at the bottom of the frame, and a stepping motor is arranged on the surface of the support plate.
A motor shaft of the stepping motor is fixed with one end of the coupler, the other end of the coupler is connected with one end of the roll gap adjusting transmission rod, and the other end of the roll gap adjusting transmission rod is sleeved with the reducing sleeve.
The PLC controller is communicated with the touch input display screen and is used for setting the rotating direction and the input rotating stroke of the stepping motor.
The control box is internally provided with a start-stop switch knob for controlling the start and stop of the stepping motor.
And a manual forward and reverse switching knob is also arranged in the control box and used for manually switching the forward rotation and the reverse rotation of the stepping motor.
The start-stop switch knob is connected with a start-stop indicator lamp.
The manual forward and reverse rotation switching knob is also connected with a selection indicator lamp.
The invention has the following beneficial effects:
1. the PLC is used for controlling the stepping motor to adjust the roll gap size of the pre-finishing roll, the traditional manual adjustment and the conventional manual operation method for adjusting the roll gap by the variable frequency motor are replaced, the automatic adjustment is completely realized, and the time and the labor are saved.
2. Through the tangible formula display screen of PLC controller, can input the direction and the distance that the roll gap was adjusted, press the start button and can begin the roll gap and adjust work, accomplish back step motor automatic shutdown work, accommodation process is simple and convenient, and the regulation result is accurate.
3. Through the adjusting device that this application provided, only need one can satisfy the finish rolling demand in same workshop, when it takes place to damage, only need dismantle alone simultaneously, do not influence the running of integrated device.
Drawings
Fig. 1 is a schematic structural diagram of an adjusting device of an adjusting method of a high-speed wire pre-finishing roll gap.
FIG. 2 is a side view of an adjustment device for a method of adjusting a high line pre-finishing nip.
Fig. 3 is a schematic view of a front panel of a control box of an adjusting device of an adjusting method of a high-speed wire pre-finishing roll gap.
FIG. 4 is a schematic diagram of a rear panel of a control box of an adjusting device of an adjusting method for a high-speed wire pre-finishing roll gap
Among them are:
10. a hydraulic lifting trolley; 11. a frame; 12. a universal wheel; 13. a braking system;
20. a control box; a PLC controller; 22. a stepper motor controller; 23. a stepper motor driver; 24. a touch display screen; 25. a start-stop switch knob; 26. manually switching a forward and reverse rotation knob; 27. starting and stopping the indicator lamp; 28. selecting an indicator light;
30. a hydraulic cylinder;
40. a stepping motor; 41. a coupling; 42. a roll gap adjusting transmission rod; 43. reducing sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
Based on the prior art that the existing adjusting method for the finish rolling gap usually depends on manual adjustment, and the adjusting precision cannot be guaranteed, the application aims to provide an adjusting method for the high-speed wire pre-finish rolling gap, the size of the high-speed wire pre-finish rolling gap is adjusted in a full-automatic mode, and the working efficiency is improved on the premise of guaranteeing the adjusting precision, and the adjusting method specifically comprises the following steps:
firstly, the height of the hydraulic lifting trolley 10 is adjusted, and the central axis of a motor shaft of a stepping motor 40 on the hydraulic lifting trolley is aligned with the central axis of a roll gap connecting rod of a pre-finishing roll.
And secondly, starting the PLC 21, sending an adjusting instruction to the stepping motor controller 22 by the PLC 21, and outputting a uniform pulse signal to the stepping motor driver 23 after the stepping motor controller 22 receives the adjusting instruction of the PLC 21. The driver receives pulse signals, and each time the driver receives a pulse signal, the driver gives a pulse to the motor to enable the motor to rotate by a fixed angle.
In the third step, the stepping motor driver 23 converts the pulse signal received from the stepping motor controller 22 into a high current signal and transmits the high current signal to the stepping motor 40.
Fourthly, after the stepping motor 40 receives the strong current signal sent by the stepping motor driver 23, the motor shaft of the stepping motor 40 is driven to rotate. The driver receives pulse signals, and when receiving a pulse signal, the driver can give a pulse to the motor to enable the motor to rotate by a fixed angle, namely a step angle, the rotation of the stepping motor operates step by step at the fixed angle, and the angular displacement can be controlled by controlling the number of the pulses, so that the aim of accurate positioning is fulfilled.
Fifthly, after the motor shaft of the stepping motor 40 rotates, the power is transmitted to the roll gap adjusting transmission rod 42 through the coupler 41, and the roll gap adjusting transmission rod 42 sequentially transmits the power to the roll gap connecting rod of the roll to be pre-finished through the reducing sleeve 43, so that the adjusting operation is completed.
And sixthly, repeating the first step to the fifth step, and adjusting the roll gap for multiple times until the preset requirement for pressing and releasing the roll gap is met.
Based on the above operation steps, in this embodiment, as shown in fig. 1 and fig. 2, the hydraulic lifting trolley 10 includes a frame 11, universal wheels 12 are installed at the bottom of the frame, a braking system 13 for controlling the hydraulic lifting trolley to start and stop is further provided, the braking system 13 is communicated with the universal wheels 12, the braking system 13 is turned off, the universal wheels 12 roll to drive the hydraulic lifting trolley to move, the braking system 13 is started, the universal wheels 12 stop moving, and at this time, the hydraulic lifting trolley 10 is positioned in a designated working area.
A hydraulic cylinder 30 is arranged on a support frame of the frame close to the bottom and is used for controlling the lifting of the hydraulic lifting trolley.
A supporting plate is also arranged at the bottom of the frame, and a stepping motor 40 is arranged on the surface of the supporting plate.
A motor shaft of the stepping motor 40 is fixed with one end of a coupler 41, the other end of the coupler 41 is connected with one end of a roller gap adjusting transmission rod 42, and a reducing sleeve 43 is sleeved at the other end of the roller gap adjusting transmission rod 42. After a motor shaft of the stepping motor 40 rotates, power is transmitted to the roll gap adjusting transmission rod 42 through the coupler 41, the roll gap adjusting transmission rod 42 sequentially transmits the power to a roll gap connecting rod of a roll to be pre-finished through the reducing sleeve 43, the roll collar is driven to move, and the size of the roll gap is adjusted to a set value.
The hydraulic lifting trolley is provided with a base frame 11, supporting plates are arranged on the two side brackets of the base frame, a control box 20 is arranged on the surface of each supporting plate, and the control box is externally connected with a 220V power supply through a power cable to supply power to the whole device.
As shown in fig. 3, a PLC controller 21, a stepping motor controller 22, and a stepping motor driver 23 are arranged in the control box.
As shown in fig. 4, the PLC controller 21 in the control box 20 communicates with the touch-input-enabled display screen 24 for setting the rotation direction and the input rotation stroke of the stepping motor 40.
The control box 20 is connected to the stepping motor 40 through a power cable and a signal cable, passes a working power for the stepping motor, and transmits a high current signal.
A start-stop switch knob 25 is arranged in the control box and used for controlling the start and stop of the stepping motor.
A manual forward and reverse rotation switching knob 26 is further arranged in the control box and used for manually switching forward rotation and reverse rotation of the stepping motor.
The start-stop switch knob is connected with a start-stop indicator lamp 27, and when the start-stop switch knob is located at the start position, the start-stop indicator lamp is displayed to be green; when the start-stop switch knob is located at the closing position, the start-stop indicator lamp is displayed in red.
The manual forward and reverse rotation switching knob is connected with a selection indicator light 28, when the manual forward and reverse rotation switching knob is located at the forward rotation position, the selection indicator light is displayed in green, and when the manual forward and reverse rotation switching knob is located at the reverse rotation position, the selection indicator light is displayed in red.
As another preferred option, the stepper motor controller 22 may be replaced with a servo motor controller; the stepper motor driver 23 may be replaced with a servo motor driver; the stepper motor 40 may be replaced with a servo motor.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.
Claims (7)
1. A method for adjusting a high-speed wire pre-finishing roll gap is characterized by comprising the following steps: the method specifically comprises the following steps:
firstly, adjusting the height of a hydraulic lifting trolley (10), and aligning the central axis of a motor shaft of a stepping motor (40) on the hydraulic lifting trolley (10) with the central axis of a roll gap connecting rod of a roll to be pre-finished;
secondly, starting the PLC (21), sending an adjusting instruction to the stepping motor controller (22) by the PLC (21), and outputting a uniform pulse signal to the stepping motor driver (23) after the stepping motor controller (22) receives the adjusting instruction of the PLC (21);
thirdly, the stepping motor driver (23) converts the pulse signal received from the stepping motor controller (22) into a strong current signal and transmits the strong current signal to the stepping motor (40);
fourthly, after the stepping motor (40) receives a strong current signal sent by the stepping motor driver (23), a motor shaft of the stepping motor (40) is driven to rotate;
fifthly, after a motor shaft of the stepping motor (40) rotates, power is transmitted to a roll gap adjusting transmission rod (42) through a coupler (41), and the roll gap adjusting transmission rod (42) transmits the power to a roll gap connecting rod of a roll to be pre-finished in sequence through a reducing sleeve (43), so that the adjusting operation is completed;
and sixthly, repeating the first step to the fifth step, and adjusting the roll gap for multiple times until the preset requirement for pressing and releasing the roll gap is met.
2. The method for adjusting the high-speed wire pre-finishing roll gap according to claim 1, characterized in that: hydraulic pressure lift dolly (10) including frame (11), frame bottom installation universal wheel (12), still be equipped with braking system (13) that are used for controlling hydraulic pressure lift dolly (10) and open and stop, braking system (13) and universal wheel (12) intercommunication close braking system (13), universal wheel (12) roll and drive hydraulic pressure lift dolly (10) and remove, start braking system (13), universal wheel (12) stop motion, hydraulic pressure lift dolly (10) are located appointed work area this moment.
3. An adjusting device based on the adjusting method of the high-speed wire pre-finishing roll gap of any one of claims 1 or 2, characterized in that:
the hydraulic lifting trolley comprises a trolley frame (11) forming a base body of a hydraulic lifting trolley (10), supporting plates are arranged on two side brackets of the trolley frame (11), a control box (20) is arranged on the surfaces of the supporting plates, and a PLC (programmable logic controller) controller (21), a stepping motor controller (22) and a stepping motor driver (23) are arranged in the control box (20);
a hydraulic cylinder (30) is arranged on a support frame of the frame (11) close to the bottom and is used for controlling the lifting of the hydraulic lifting trolley (10);
a supporting plate is also arranged at the bottom of the frame, and a stepping motor (40) is distributed on the surface of the supporting plate.
4. The adjusting device of the adjusting method of the high-speed wire pre-finishing roll gap according to claim 3, characterized in that: a motor shaft of the stepping motor (40) is fixed with one end of a coupler (41), the other end of the coupler (41) is connected with one end of a roller gap adjusting transmission rod (42), and a reducing sleeve (43) is sleeved at the other end of the roller gap adjusting transmission rod (42).
5. The adjusting device of the adjusting method of the high-speed wire pre-finishing roll gap according to claim 3, characterized in that: the PLC controller (21) is communicated with the display screen (24) capable of being input by touch and used for setting the rotating direction and the input rotating stroke of the stepping motor (40).
6. The adjusting device of the adjusting method of the high-speed wire pre-finishing roll gap according to claim 3, characterized in that: a start-stop switch knob (25) is arranged in the control box (20) and is used for controlling the start and stop of the stepping motor;
a manual forward and reverse rotation switching knob (26) is further arranged in the control box (20) and used for manually switching the forward rotation and the reverse rotation of the stepping motor.
7. The adjusting device of the adjusting method of the high-speed wire pre-finishing roll gap according to claim 6, characterized in that: the start-stop switch knob (25) is connected with a start-stop indicator lamp (27);
the manual forward and reverse switching knob (26) is also connected with a selection indicator lamp (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110484393.8A CN113275386A (en) | 2021-04-30 | 2021-04-30 | Adjusting method and adjusting device for high-speed wire pre-finishing roll gap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110484393.8A CN113275386A (en) | 2021-04-30 | 2021-04-30 | Adjusting method and adjusting device for high-speed wire pre-finishing roll gap |
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Citations (7)
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|---|---|---|---|---|
| CN201978944U (en) * | 2010-12-07 | 2011-09-21 | 福建三钢闽光股份有限公司 | Roller seam adjusting device of high line pre-finishing mill |
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| CN112317543A (en) * | 2020-10-30 | 2021-02-05 | 江苏大学 | Screwing device for spiral steel plate bin forming machine disc spring group |
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2021
- 2021-04-30 CN CN202110484393.8A patent/CN113275386A/en active Pending
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|---|---|---|---|---|
| CN201978944U (en) * | 2010-12-07 | 2011-09-21 | 福建三钢闽光股份有限公司 | Roller seam adjusting device of high line pre-finishing mill |
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| CN203140443U (en) * | 2013-04-03 | 2013-08-21 | 武钢集团昆明钢铁股份有限公司 | Movable lifting type roller seam adjusting device |
| CN203991675U (en) * | 2014-08-26 | 2014-12-10 | 丁广文 | A kind of battery pole piece rolling mill roll gap adjustment device |
| CN105057349A (en) * | 2015-08-19 | 2015-11-18 | 东北大学 | Metal ultra-thin strip negative roll gap rolling method allowing different-speed ratio to be adjusted online |
| CN110918650A (en) * | 2019-12-11 | 2020-03-27 | 四川德胜集团钒钛有限公司 | Electric adjusting device for rolling groove of rolling mill |
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Application publication date: 20210820 |