A device and control method for preventing coil-up and reverse coiling on a coiler

Abstract

An embodiment of the present application discloses a device and a control method for preventing the coil on the coiler from uncoiling, which relates to the technical field of metal rolling, and includes: a chassis, an installation base plate and a hinge seat are provided on the chassis; a connecting rod assembly, the connecting rod assembly is hinged to the hinge seat; a detection assembly, the detection assembly is installed on the connecting rod assembly, and the detection assembly is used to detect the positional relationship between the coil car and the steel coil on the coiler; a driving assembly, the driving assembly is used to drive the connecting rod assembly to move. By driving the connecting rod assembly to move through the driving assembly, the detection assembly is extended onto the track of the coil car for monitoring. The device has a simple structure, is convenient to use, and occupies a small space.

Description

Technical Field

[0001] This application relates to the technical field of metal rolling, and particularly relates to a device and a control method for preventing the coil from flipping during the coil-up process of a coiler. Background Art

[0002] During the actual on-site production of the coil-up machine, when the steel coil is being coiled up to the coiler, when the mandrel is about to be inserted into the inner ring of the steel coil, due to reasons such as inaccurate steel coil diameter, equipment precision error of the lifting mechanism of the coil car, abnormal counting of the height alignment of the coil car, or abnormal wear of the coil support rollers on the coil car, there is a deviation in the lifting value during the height alignment of the steel coil, resulting in the inner ring of the steel coil not being aligned with the mandrel. When the steel coil is horizontally shifted towards the coiler, there is a collision between the side of the steel coil and the end of the mandrel. When the coil car is horizontally shifted, the mandrel will push the steel coil off from above the coil car, causing a coil flipping accident. Each time, the equipment damage and fault handling time exceed 8 hours, resulting in a long-term equipment shutdown. There are also a large number of safety hazards during the process of personnel handling the coil flipping fault. Therefore, how to avoid the occurrence of coil flipping accidents urgently needs to be solved. Summary of the Invention

[0003] The purpose of this application is to provide a detection device for a coiler and a control method for the coil-up process of the coiler to solve the technical problems existing in the prior art: namely, how to solve the technical problem that the inner ring of the steel coil is not aligned with the mandrel when the steel coil is being coiled up to the coiler.

[0004] To solve the above technical problems, this application adopts the following technical solutions:

[0005] In the first aspect of the embodiments of this application, a device for preventing the coil from flipping during the coil-up process of a coiler is provided, including: a chassis, on which an installation base plate and a hinge seat are provided; a connecting rod assembly, which is hinged to the hinge seat; a detection assembly, which is installed on the connecting rod assembly and is used to detect the positional relationship between the coil car and the steel coil on the coiler; a driving assembly, which is used to drive the connecting rod assembly to move.

[0006] In some embodiments, the connecting rod assembly includes: a first movable rod, the lower end of which is hinged to the hinge seat; a second movable rod, one end of which is connected to the upper end of the first movable end, and the other end of which is connected to the detection assembly.

[0007] In some embodiments, the connecting rod assembly further includes a support frame, one end of which is connected to the first movable rod, and the other end of which is connected to the second movable rod.

[0008] In some embodiments, the detection assembly includes a laser rangefinder, which is fixed to the second movable rod.

[0009] In some embodiments, the driving assembly includes: a driving cylinder fixed to the mounting base plate, and a power output end of the driving cylinder is connected to the first movable rod; a pneumatic solenoid valve connected to the driving cylinder.

[0010] A second aspect of the embodiments of the present application provides a control method for a device for preventing coiling and uncoiling on a coiler. The control method uses the detection device, and the detection device is connected to the PLC control system in the coiler, and includes the following steps:

[0011] 1) Hoist the steel coil to be rolled by a crane and place it above the saddle at the end of the track of the coil car. The coil car moves to directly below the saddle, and the displacement of the coil car here is set to 0 mm through the PLC control system. At the same time, the staff obtains the diameter value of the steel coil.

[0012] 2) Press the coil loading button of the coiler to start the automatic coil loading process. The coil car lowers the lifting hydraulic cylinder to the lowest point, and at the same time, calculates the lifting height H of the car through the PLC control system.

[0013] 3) The lifting hydraulic cylinder gradually rises to lift the steel coil, and stops lifting when the height of the hydraulic cylinder reaches H. At this time, the steel coil is lifted by the coil car from above the saddle.

[0014] 4) Drive the transverse movement motor installed in the coil car to drive the coil car to move transversely on the track towards the coiling mandrel. At this time, the movement value of the coil car is continuously accumulated and calculated through the encoder carried by the transverse movement motor to ensure that the displacement of the coil car at any position is a known value.

[0015] 5) An optical switch for width measurement is installed at the 5000 mm position of the coil car channel. When the steel coil moves transversely to this position and passes through the optical switch, the steel coil blocks the optical switch. At the moment when the optical switch is blocked, record the position of the coil car at this time as W1. After the steel coil passes through the optical switch, record the position of the coil car at this time as W2. According to the values of W1 and W2, calculate the current strip width W, and the distance W3 between the center line of the steel coil width and the center line of the width of the coil car body. Combine the position of the rolling center line installed on the mandrel to calculate the transverse movement position A of the coil car when the center line of the steel coil width reaches the center line of the mandrel to achieve width alignment.

[0016] 6) When the horizontal displacement position of the coil car reaches 6000 mm, at this time, the side of the coil close to the mandrel of the coiler has not reached the end of the mandrel of the coiler. The PLC control system drives the detection device to detect. The pneumatic solenoid valve drives the cylinder to act. The first movable rod acts with the hinge seat as the center, so as to drive the second movable rod onto the coil car channel. The laser rangefinder enters the working position. At this time, the distance from the laser rangefinder to the coil is L1. At the same time, the PLC control system records the displacement value of the coil car at this time as L2. The values of L1 and L2 are read and recorded simultaneously. The coil car continues to move towards the mandrel of the coiler. The PLC control system real-time collects the distance L3 from the laser rangefinder to the coil, and the displacement value of the coil car is real-time recorded as L4;

[0017] 7) When the coil moves towards the mandrel of the coiler, in the theoretical state, L3 - L1 = L4 - L2; the PLC control system real-time monitors the value of (L4 - L2) - (L3 - L1). When this value is greater than 10 mm, it indicates that the moving position of the coil is abnormal. At this time, it can be judged that the coil car moves forward while the coil does not move forward, resulting in the continuous increase of the value of L4 while the value of L2 does not change. At this time, the automatic coil loading equipment stops operating;

[0018] When the value is continuously less than 10 mm, it is considered that the coil centering process is normal at this time. The coil car continues to move towards the mandrel of the coiler and stops when it moves to the target value of A mm for width centering. At this time, the center line of the coil coincides with the center line of the mandrel, realizing the width centering of the coil. At this time, the PLC control system controls the detection device to return to its original position.

[0019] In some embodiments, the method for the staff to obtain the diameter value of the coil in step 1) is to obtain the diameter of the coil to be loaded through data presetting, or to input the diameter value of the coil after manually measuring the diameter of the coil on the saddle on the operation interface.

[0020] In some embodiments, the detection device is arranged at the position of 5500 mm on the car track.

[0021] It can be seen from the above technical solutions that the present application has at least the following advantages and positive effects:

[0022] For a device and control method for preventing coil overturning during coiling in the present application, the driving component drives the link component to move, so that the detection component extends onto the track of the coil car for monitoring. The device has a simple structure, is easy to use, and occupies a small space.

[0023] For a device and control method for preventing coil overturning during coiling in the present application, the detection device detects the abnormal position of the coil, avoids the collision between the side of the coil and the end of the mandrel, and can effectively avoid the potential safety hazards existing in the process of personnel dealing with the coil overturning fault. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of a device for preventing the coil from turning over during coiling according to an embodiment;

[0026] Figure 2 It is a working schematic diagram of a control method for a device for preventing the coil from turning over during coiling according to an embodiment.

[0027] The description of the reference numerals is as follows: 1. Pneumatic solenoid valve; 2. Installation base plate; 3. Hinge seat; 4. Driving cylinder; 5. First movable rod; 6. Second movable rod; 7. Support frame; 8. Laser rangefinder; 9. Transverse movement motor; 10. Coil car; 11. Saddle; 12. Rail; 13. Coiling mandrel; 14. Steel coil. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0030] The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "connected", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the connection inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0032] Please refer to Figure 1 。

[0033] Figure 1 is a schematic structural diagram of a device for preventing the coiling machine from coiling over during loading. As shown in the figure, it includes: a chassis, on which an installation base plate 2 and a hinge seat 3 are provided; a connecting rod assembly, which is hinged to the hinge seat 3; a detection assembly, which is installed on the connecting rod assembly and is used to detect the positional relationship between the steel coil trolley 10 and the steel coil on the coiling machine; a driving assembly, which is used to drive the connecting rod assembly to move. By driving the connecting rod assembly to move through the driving assembly, the detection assembly extends into the track 12 of the steel coil trolley 10 for monitoring. The structure of this device is simple, practical and convenient, and occupies a small space.

[0034] In this embodiment, the connecting rod assembly includes: a first movable rod 5, the lower end of which is hinged to the hinge seat 3; a second movable rod 6, one end of which is connected to the upper end of the first movable end, and the other end of which is connected to the detection assembly. By driving the first movable rod 5 to move through the driving assembly, the second movable rod 6 is further driven to move.

[0035] In this embodiment, the connecting rod assembly further includes a support frame 7, one end of which is connected to the first movable rod 5, and the other end of which is connected to the second movable rod 6. The support frame 7 is used to make the support more stable.

[0036] In this embodiment, the detection assembly includes a laser rangefinder 8, which is fixed to the second movable rod 6.

[0037] In this embodiment, the driving assembly includes: a driving cylinder 4, which is fixed to the installation base plate 2, and the power output end of the driving cylinder 4 is connected to the first movable rod 5; a pneumatic solenoid valve 1, which is connected to the driving cylinder 4. By driving the first movable rod 5 to swing through the driving cylinder 4, the pneumatic solenoid valve 1 is connected to the PLC control system of the coiling machine.

[0038] Please refer toFigure 2 ;

[0039] Figure 2 This is a working schematic diagram of a control method for a device used to prevent coil-up and roll-over on a coiler. The control method uses the described detection device, which is connected to the PLC control system inside the coiler, and includes the following steps:

[0040] 1) Lift the steel coil to be rolled by a crane and place it above the saddle 11 at the end of the track 12 of the coil car 10. The coil car 10 moves to directly below the saddle 11, and the displacement of the coil car 10 here is set to 0 mm through the PLC control system. At the same time, the staff obtains the diameter value of the steel coil;

[0041] 2) Press the coil-up button of the coiler to start the automatic coil-up process. The coil car 10 lowers the lifting hydraulic cylinder to the lowest point, and at the same time, calculates the lifting height H of the car through the PLC control system;

[0042] 3) The lifting hydraulic cylinder gradually rises to lift the steel coil 14 and stops lifting when the height of the hydraulic cylinder reaches H. At this time, the steel coil 14 is lifted by the coil car 10 from above the saddle 11;

[0043] 4) A traversing motor 9 is installed inside the coil car 10. The traversing motor 9 drives the coil car 10 to traverse on the track 12 in the direction of the coiler mandrel 13. At this time, the movement value of the coil car 10 is continuously accumulated and calculated through the encoder carried by the traversing motor 9 to ensure that the displacement of the coil car 10 at any position is a known value;

[0044] 5) An optical switch for width measurement is installed at the 5000 mm position of the coil car 10 channel. When the steel coil 14 traverses to this position and passes through the optical switch, the steel coil 14 blocks the optical switch. At the moment when the optical switch is blocked, record the position of the coil car 10 at this time as W1. After the steel coil 14 passes through the optical switch, record the position of the coil car 10 at this time as W2. According to the values of W1 and W2, calculate the current strip width W, as well as the distance W3 between the width center line of the steel coil 14 and the width center line of the coil car 10 body. Combining the position of the rolling center line installed on the mandrel, calculate the traversing position A of the coil car 10 when the width center line of the steel coil reaches the center line position of the mandrel to achieve width centering;

[0045] 6) When the horizontal movement position of the coiler car 10 reaches 6000 mm, at this time, the side of the coil close to the mandrel 13 of the coiler has not reached the end of the mandrel 13 of the coiler. The PLC control system drives the detection device to detect. The pneumatic solenoid valve 1 drives the cylinder 4 to act. The first movable rod 5 acts with the hinge seat 3 as the center, so as to drive the second movable rod 6 onto the channel of the coiler car 10. The laser rangefinder 8 enters the working position. At this time, the distance from the laser rangefinder 8 to the coil is L1. At the same time, the PLC control system records the displacement value of the coiler car 10 moving at this time as L2. The values of L1 and L2 are read and recorded simultaneously. The coiler car 10 continues to move towards the mandrel 13 of the coiler. The PLC control system real-time collects the distance L3 from the laser rangefinder 8 to the coil, and the displacement value of the coiler car 10 is real-time recorded as L4;

[0046] 7) When the coil moves towards the mandrel 13 of the coiler, in the theoretical state, L3 - L1 = L4 - L2; the PLC control system real-time monitors the value of (L4 - L2) - (L3 - L1). When this value is greater than 10 mm, it means that the moving position of the coil 14 is abnormal. At this time, it can be judged that the coiler car 10 advances while the coil does not advance, resulting in the continuous increase of the value of L4 while the value of L2 does not change. At this time, the automatic coil loading equipment stops operating;

[0047] When the value is continuously less than 10 mm, it is considered that the coil centering process is normal at this time. The coiler car 10 continues to move towards the mandrel 13 of the coiler and stops when it moves to the target value of A mm for width centering. At this time, the center line of the coil 14 coincides with the center line of the mandrel, realizing the width centering of the coil 14. At this time, the PLC control system controls the detection device to return to its original position.

[0048] In this embodiment, the method for the staff to obtain the diameter value of the coil in step 1) is to obtain the diameter of the coil to be loaded through data presetting, or to input the coil diameter value in the operation interface after manually measuring the diameter of the coil on the saddle 11.

[0049] In this embodiment, the detection device is arranged at the position of 5500 mm on the trolley track 12. It is in the offline position and has no interference with the position of the coiler car 10.

[0050] It can be seen from the above technical solutions that this application has at least the following advantages and positive effects:

[0051] For the detection device of a coiler in this application, the driving component drives the link component to move, so that the detection component extends onto the track of the coiler car for monitoring. This device has a simple structure, is convenient to use, and occupies a small space.

[0052] A control method for loading a coiler in the present application detects abnormal positions of the steel coil through a detection device, avoiding collisions between the side of the steel coil and the end of the mandrel, and effectively avoiding potential safety hazards during the process of personnel handling coil overturning faults.

[0053] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0054] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A control method for a device to prevent the coiler from overturning during coiling, characterized in that, It includes the following steps: 1) Use an overhead crane to lift and place the steel coil to be rolled above the saddle at the end of the coil car channel. The coil car moves to directly below the saddle, and the displacement of the coil car here is set to 0 mm through the PLC control system. At the same time, the staff obtains the diameter value of the steel coil; 2) Press the coil loading button of the coiler to start the automatic coil loading process. The coil car lowers the lifting hydraulic cylinder to the lowest point, and at the same time, calculates the lifting height H of the car through the PLC control system; 3) The lifting hydraulic cylinder gradually rises to lift the steel coil and stops lifting when the height of the hydraulic cylinder reaches H. At this time, the steel coil is lifted by the coil car from above the saddle; 4) Drive the transverse movement motor installed in the coil car to drive the coil car to move transversely on the car track towards the coiler mandrel. At this time, the movement value of the coil car is continuously accumulated and calculated through the encoder carried by the transverse movement motor to ensure that the displacement of the coil car at any position is a known value; 5) An optoelectronic switch for width measurement is installed at the 5000 mm position of the coil car channel. When the steel coil moves transversely to this position and passes through the optoelectronic switch, the steel coil blocks the optoelectronic switch. At the moment when the optoelectronic switch is blocked, record the position of the coil car at this time as W1. After the steel coil passes through the optoelectronic switch, record the position of the coil car at this time as W2. According to the values of W1 and W2, calculate the current strip width W, and the distance W3 between the center line of the steel coil width and the center line of the coil car body width. Combine the position of the rolling center line installed on the mandrel to calculate the transverse movement position A of the coil car when the center line of the steel coil width reaches the center line of the mandrel to achieve width centering; 6) When the transverse movement position of the coil car reaches 6000 mm, at this time, the side of the steel coil close to the coiler mandrel has not reached the end of the coiler mandrel. The PLC control system drives the detection device to detect. The pneumatic solenoid valve drives the cylinder to act, and the first movable rod acts with the hinge seat as the center, thereby driving the second movable rod onto the coil car channel, and the laser rangefinder enters the working position. At this time, the distance measured by the laser rangefinder to the steel coil is L1. At the same time, the PLC control system records the displacement value of the coil car moving at this time as L2. The values of L1 and L2 are read and recorded simultaneously. The coil car continues to move towards the coiler mandrel, and the PLC control system real-time collects the distance L3 from the laser rangefinder to the steel coil, and the displacement value of the coil car is recorded as L4 in real time; 7) When the steel coil moves towards the coiler mandrel, in the theoretical state, L3 - L1 = L4 - L2; the PLC control system real-time monitors the value of (L4 - L2) - (L3 - L1). When this value is greater than 10 mm, it means that the moving position of the steel coil is abnormal. At this time, it can be judged that the coil car moves forward while the steel coil does not move forward, resulting in the continuous increase of the value L4 while the value of L2 does not change. At this time, the automatic coil loading equipment stops operating; When the value continuously remains less than 10 mm, it is considered that the centering process of the steel coil is normal at this time. The steel coil trolley continuously moves towards the coiling mandrel and stops when it moves to the position where the target value of width centering is A mm. At this time, the center line of the steel coil coincides with the center line of the mandrel, achieving the width centering of the steel coil. At this time, the PLC control system controls the detection device to return to its original position.

2. The control method for a device to prevent the coiler from overturning during coiling according to claim 1, characterized in that, In step 1), the method for the staff to obtain the diameter value of the steel coil is to obtain the diameter of the steel coil to be loaded through data presetting, or to input the diameter value of the steel coil in the operation interface after manually measuring the diameter of the steel coil on the saddle.

3. The control method for a device to prevent the coiler from overturning during coiling according to claim 1, characterized in that, The detection device is arranged at the position 5500 mm of the trolley track.

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