Device for preventing steel coil outer ring from overflowing edge and using method thereof
By installing a pressure roller device with a cylinder and a synchronization mechanism on the coiler, the problem of not being able to dynamically constrain the direction of the strip steel in the prior art is solved, and the effect of preventing the outer ring from overflowing is achieved. It is suitable for steel coils of different diameters and does not occupy extra space.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAOSTEEL ENG & TECH GRP
- Filing Date
- 2025-12-29
- Publication Date
- 2026-05-01
AI Technical Summary
Existing anti-overflow edge devices cannot apply dynamic directional constraints to the strip during the winding process, resulting in serious outer ring overflow edge problems, especially on the No. 2 winding machine. They also occupy a lot of space, have poor adaptability, and cannot be seamlessly integrated into existing winding machines.
A device including a cylinder, a synchronization mechanism, and pressure rollers is designed. The cylinder drives the synchronization mechanism to move the pressure roller frames towards each other, and the pressure rollers are in contact with the end face of the steel coil. The synchronization mechanism and the pressure rollers are used to dynamically constrain the steel coil and prevent the outer ring from overflowing.
It automatically prevents the outer ring from overflowing during the winding process, is suitable for steel coils of different diameters, occupies little space, and can be seamlessly integrated with existing coilers, thus improving production efficiency and product quality.
Smart Images
Figure CN121945593A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of winding, coiling, or unwinding of metal wires, metal strips, or other flexible metal materials, specifically to a device for preventing the outer edge of a steel coil from overflowing and its method of use. Background Technology
[0002] Currently, cold rolling processing lines, such as continuous annealing units and galvanizing units, often have two coilers (No. 1 and No. 2) at the unit exit to achieve higher output. During slitting, the exit flying shear cuts the strip steel, causing it to lose tension. The strip tail is in a tension-free state, and the deviation is controlled solely by the installation accuracy of the pinch rolls. If the pinch roll installation accuracy is low or the strip shape is poor, the deviation at the strip tail will be significant, ultimately causing overflow edge phenomena on the outer 3-5 coils. Because the No. 1 coiler is closer to the exit flying shear, the overflow edge on the outer coil can be barely controlled by adjusting the equipment installation accuracy. However, the No. 2 coiler is about 8 meters further from the exit flying shear than the No. 1 coiler. This means the strip steel travels about 8 meters longer to the No. 2 coiler, causing more severe deviation on the way to the No. 2 coiler, ultimately resulting in a more serious overflow edge problem on the No. 2 coiler.
[0003] Outer edge overflow mainly occurs during the tail-end winding process, and thicker strip steel is more prone to overflow than thinner strip steel, with overflow reaching 10mm to 20mm in severe cases. Inner edge overflow can be partially resolved by manually tapping with a rubber mallet in the next packaging unit. However, for outer edge overflow, because 1-3 straps are immediately tied around the outer edge after the coil leaves the production line to prevent loosening, it is difficult to resolve manually by tapping in the packaging unit. Excessive overflow can easily cause edge curling and folding during transportation, thus affecting downstream users' experience.
[0004] Existing anti-overflow devices mostly use static alignment or sensor detection followed by position adjustment, but they have the following insurmountable drawbacks: 1. They can only achieve positional alignment or static alignment, and cannot apply dynamic directional constraints to the strip during the winding process, resulting in a high probability of outer edge overflow (especially on the No. 2 winding machine); 2. They require an additional independent mechanism, occupying ≥1.5m² of production line space, and cannot be seamlessly integrated with existing winding machines; 3. They have poor adaptability to steel coils with diameters <1200mm or >2500mm, requiring frequent manual adjustment of cylinder pressure, with a single coil adjustment time ≥3 minutes.
[0005] Therefore, there is an urgent need for a device that can be integrated into existing pressure rollers to prevent the outer ring from overflowing. This would reduce quality complaints from downstream users and directly improve economic efficiency. Summary of the Invention
[0006] In order to overcome the shortcomings of the prior art, this invention discloses a device for preventing the outer edge of a steel coil from overflowing and its usage method, which is simple in structure and easy to install.
[0007] The present invention achieves its objective through the following technical solution: A device for preventing overflow of the outer edge of a steel coil includes a coiler. The coiler includes a base, a pressure roller frame, a pressure roller drive hydraulic cylinder, a pressure roller, and a drum. The base is fixed to the ground. The pressure roller frame is rotatably connected to the coiler via the pressure roller drive hydraulic cylinder, which is mounted on the coiler. The piston rod of the pressure roller drive hydraulic cylinder is connected to the pressure roller frame. The pressure roller is rotatably mounted on the pressure roller frame. One end of the drum is rotatably positioned at the center of the coiler via a bearing. The central axes of the drum and the pressure roller are parallel to each other. The device further includes a cylinder, a synchronization mechanism, a pressure roller support frame, and a pressure roller support frame. Both the cylinder and the synchronizing mechanism are fixed on the pressure roller frame. The cylinder body is connected to the air source through an air supply line with a pneumatic proportional valve connected in series. The synchronizing mechanism has one input end and two output ends. The two output ends of the synchronizing mechanism are respectively located at both ends of the steel coil. The moving end of the cylinder piston rod is connected to the input end of the synchronizing mechanism. Each of the two output ends of the synchronizing mechanism is fixed to a pressure roller frame. Each pressure roller frame has a pressure roller rotatably installed inside it. The pressure roller and the pressure roller are perpendicular to each other.
[0008] The device for preventing overflow of the outer edge of the steel coil is characterized in that: the synchronizing mechanism includes a gear and two racks. The gear is rotatably mounted on a fixed frame via a rotating shaft. The fixed frame is provided with two sliding grooves, which are respectively located on both sides of the gear. Each rack is slidably mounted in one of the sliding grooves of the fixed frame. The gear meshes with one rack, and the outer end of the rack serves as the output end of the synchronizing mechanism, which is fixed to a pressure roller frame.
[0009] The device for preventing overflow of the outer edge of the steel coil is characterized in that it further includes an outer support, and the other end of the coil is rotatably mounted on the outer support via a bearing.
[0010] The method of using the device for preventing overflow of the outer edge of the steel coil is characterized by the following steps being performed sequentially: S1. Coiling: The strip head is fixed on the drum. The drum rotates to wind the strip into a coil one turn at a time. When the strip is about to finish winding, the pressure roller frame is pressed down under the drive of the pressure roller drive hydraulic cylinder, so that the outer side of the pressure roller is in contact with the upper surface of the steel coil. S2. Bonding: The cylinder drives the synchronization mechanism to move the pressure roller frames at both ends toward each other, and the pressure roller frames drive the pressure rollers to bond to the two end faces of the steel coil; S3. Winding: When the steel coil is wound around the drum, it drives the pressure rollers on both sides of the steel coil to rotate. The steel coil is constrained by the pressure rollers on both sides to maintain its existing conveying direction, thereby preventing the outer ring of the steel coil from overflowing, thus achieving the purpose of making the outer ring end face of the steel coil flush.
[0011] S4. Following: This invention is fixed on the coiler and can automatically adjust its position to the center of the strip by following the coiler EPC (strip edge alignment system).
[0012] The method of using the device for preventing overflow of the outer edge of the steel coil is characterized by the following steps being performed sequentially: S1. Coiling: The other end of the drum is rotatably mounted on the outer support via a bearing. The strip head is fixed on the drum. The drum rotates to wind the strip into a coil one turn at a time. When the strip is about to finish winding, the pressure roller frame is pressed down under the drive of the pressure roller drive hydraulic cylinder, so that the outer side of the pressure roller is in contact with the outer side of the steel coil. S2. Bonding: The cylinder-driven synchronization mechanism moves the pressure roller frames at both ends toward each other, and the pressure roller frames drive the pressure rollers to bond to the two end faces of the steel coil; S3. Coiling: When the steel coil rotates around the drum to unwind, it drives the pressure rollers on both sides of the steel coil to rotate. The steel coil is constrained by the pressure rollers on both sides to maintain its existing conveying direction, thereby preventing the outer ring from overflowing. S4. Following: This invention is fixed on the coiler and can automatically adjust its position to the center of the strip by following the coiler EPC (strip edge alignment system).
[0013] This invention can be installed on existing equipment and, after programming, can be automatically put into operation using the unit's main PCL.
[0014] This invention occupies little space, can be installed on the pressure rollers of an existing coiler without taking up additional space, and will not interfere with other equipment. This invention ensures that two pressure rollers simultaneously press against the sidewall of the steel coil, and the coiler is equipped with an EPC (Strip Edge Matching System) that can automatically adjust its position to the center of the strip. Furthermore, because the coiler's pressure rollers can press on steel coils of different diameters, this device is applicable to steel coils of various sizes. Considering that the pressure rollers configured in this invention have a certain length, the diameter of the steel coil should not be less than 1000mm. Since the diameter of finished steel coils is generally greater than 1100mm, this invention can meet the needs of all steel coils.
[0015] The present invention has the following advantages: it has a simple structure, is easy to install, and can automatically adjust the working width according to the width of the strip steel. Attached Figure Description
[0016] Figure 1 This is the front view of the present invention. Figure 2 This is the left view of the present invention. Figure 3This is a top view of the present invention. Figure 4 This is a schematic diagram of the synchronization mechanism in this invention. Detailed Implementation
[0017] The present invention will be further illustrated below through specific embodiments. Example
[0018] A device for preventing the outer edge of a steel coil from overflowing includes a coiler 1, a cylinder 2, a synchronization mechanism 3, a pressure roller frame 41, and a pressure roller 42, as shown below. Figures 1-4 As shown, the specific structure is: The winding machine 1 includes a base 11, a pressure roller frame 12, a pressure roller drive hydraulic cylinder 13, a pressure roller 14, and a winding drum 15. The base 11 is fixed to the ground. The pressure roller frame 12 is rotatably connected to the winding machine 11 via the pressure roller drive hydraulic cylinder 13. The pressure roller drive hydraulic cylinder 13 is mounted on the winding machine 11, and the piston rod of the pressure roller drive hydraulic cylinder 13 is connected to the pressure roller frame 12. The pressure roller 14 is rotatably mounted on the pressure roller frame 12. One end of the winding drum 15 is rotatably mounted at the center of the winding machine 1 via a bearing. The central axes of the winding drum 15 and the pressure roller 14 are parallel to each other. Both cylinder 2 and synchronizing mechanism 3 are fixed on pressure roller frame 12. The cylinder body of cylinder 2 is connected to the air source through an air supply pipeline with a pneumatic proportional valve connected in series. Synchronizing mechanism 3 has one input end and two output ends. The two output ends of synchronizing mechanism 3 are respectively located at both ends of steel coil 5. The moving end of piston rod of cylinder 2 is connected to the input end of synchronizing mechanism 3. The two output ends of synchronizing mechanism 3 are respectively fixed to a pressure roller frame 41. Each pressure roller frame 41 is rotatably provided with a pressure roller 42. The pressure roller 42 and pressure roller 14 are perpendicular to each other.
[0019] In this embodiment: the synchronization mechanism 3 includes a gear 31 and two racks 32. The gear 31 is rotatably mounted on the fixed frame 17 via a rotating shaft. The fixed frame 17 is provided with two sliding grooves, which are respectively located on both sides of the gear 31. Each rack 32 is slidably mounted in one of the sliding grooves of the fixed frame 17. The gear 31 meshes with one rack 32. The outer end of the rack 32 serves as the output end of the synchronization mechanism 3 and is fixed to a pressure roller frame 41.
[0020] This embodiment also includes an outer support 16, and the other end of the drum 15 is rotatably mounted on the outer support 16 via a bearing.
[0021] When using this embodiment, follow these steps in sequence: S1. Coiling: The strip head is fixed on the drum 15. The drum 15 rotates to wind the strip into a coil one turn at a time. When the strip is about to finish winding, the pressure roller frame 12 is pressed down under the drive of the pressure roller drive hydraulic cylinder 13, so that the outer side of the pressure roller 14 is in contact with the upper surface of the steel coil 5. S2. Adhesion: Cylinder 2 drives the synchronization mechanism 3 to move the pressure roller frames 41 at both ends toward each other, and the pressure roller frames 41 drive the pressure rollers 42 to adhere to the two end faces of the steel coil 5. S3. Winding: When the steel coil 5 rotates around the drum 15, it drives the pressure rollers 42 on both sides of the steel coil 5 to rotate. The steel coil 5 is constrained by the pressure rollers 42 on both sides to maintain its existing conveying direction, thereby preventing the outer ring of the steel coil from overflowing, thus achieving the purpose of making the outer ring end face of the steel coil flush. S4. Follow: In this embodiment, it is fixed on the coiler and can automatically adjust its position to the center of the strip by following the coiler EPC (strip edge alignment system).
[0022] The functions of some components in this embodiment are briefly described below: Cylinder 2: Drives two pressure rollers 42 to move laterally in sync, pressing them against both sides of the steel coil 5.
[0023] Synchronization mechanism 3: Composed of gear 31 and rack 32, it synchronously drives the two pressure rollers 42 with the thrust output from cylinder 2.
[0024] Pressure roller 42: Made of surface-hardened carbon steel, it presses on the two ends of the steel coil 5 to prevent the strip from overflowing.
[0025] Pneumatic circuit design: A pneumatic proportional valve is installed to set different cylinder pressures for different strip thicknesses.
Claims
1. A device for preventing overflow of the outer edge of a steel coil, comprising a coiler (1), the coiler (1) comprising a base (11), a pressure roller frame (12), a pressure roller drive hydraulic cylinder (13), a pressure roller (14), and a drum (15), the base (11) being fixed to the ground. The pressure roller frame (12) is rotatably connected to the coiler (11) via the pressure roller drive hydraulic cylinder (13), the pressure roller drive hydraulic cylinder (13) being mounted on the coiler (11), the piston rod of the pressure roller drive hydraulic cylinder (13) being connected to the pressure roller frame (12), the pressure roller (14) being rotatably mounted on the pressure roller frame (12), one end of the drum (15) being rotatably mounted at the center of the coiler (1) via a bearing, the central axes of the drum (15) and the pressure roller (14) being parallel to each other, characterized in that: It also includes a cylinder (2), a synchronization mechanism (3), a pressure roller frame (41), and a pressure roller (42). The cylinder (2) and the synchronization mechanism (3) are both fixed on the pressure roller frame (12). The cylinder body of the cylinder (2) is connected to the air source through the air supply pipeline connected in series with the pneumatic proportional valve. The synchronization mechanism (3) has one input end and two output ends. The two output ends of the synchronization mechanism (3) are respectively located at both ends of the steel coil (5). The moving end of the piston rod of the cylinder (2) is connected to the input end of the synchronization mechanism (3). The two output ends of the synchronization mechanism (3) are respectively fixed with a pressure roller frame (41). Each pressure roller frame (41) is rotatably provided with a pressure roller (42). The pressure roller (42) and the pressure roller (14) are perpendicular to each other.
2. The device for preventing overflow of the outer edge of a steel coil as described in claim 1, characterized in that: The synchronizing mechanism (3) includes a gear (31) and two racks (32). The gear (31) is rotatably mounted on a fixed frame (17) via a rotating shaft. The fixed frame (17) has two sliding grooves, which are respectively located on both sides of the gear (31). Each rack (32) is slidably mounted in a sliding groove of the fixed frame (17). The gear (31) meshes with one rack (32) respectively. The outer end of the rack (32) serves as the output end of the synchronizing mechanism (3) and is fixed to a pressure roller frame (41).
3. The device for preventing overflow of the outer edge of the steel coil as described in claim 2, characterized in that: It also includes an outer support (16), and the other end of the drum (15) is rotatably mounted on the outer support (16) via a bearing.
4. The method of using the device for preventing overflow of the outer edge of a steel coil as described in any one of claims 1 to 2, characterized in that: Follow these steps in sequence: S1. Coiling: The strip head is fixed on the drum (15). The drum (15) rotates to wind the strip into a coil one turn at a time. When the strip is about to finish winding, the pressure roller frame (12) is pressed down by the pressure roller drive hydraulic cylinder (13) so that the outer side of the pressure roller (14) is in contact with the upper surface of the steel coil (5). S2. Adhesion: The cylinder (2) drives the synchronization mechanism (3) to move the pressure roller frame (41) at both ends toward each other, and the pressure roller frame (41) drives the pressure roller (42) to adhere to the two end faces of the steel coil (5); S3. Winding: When the steel coil (5) rotates around the drum (15), it drives the pressure rollers (42) on both sides of the steel coil (5) to rotate. The steel coil (5) is constrained by the pressure rollers (42) on both sides to maintain the existing conveying direction, thereby avoiding the outer ring of the steel coil from overflowing, thus achieving the purpose of making the outer ring end face of the steel coil flush.
5. The method of using the device for preventing overflow of the outer edge of the steel coil as described in claim 3, characterized in that: Follow these steps in sequence: S1. Coiling: The other end of the drum (15) is rotatably mounted on the outer support (16) via a bearing. The strip head is fixed on the drum (15). The drum (15) rotates to wind the strip into a steel coil one turn at a time. When the strip is about to finish winding, the pressure roller frame (12) is pressed down under the drive of the pressure roller drive hydraulic cylinder (13), so that the outer side of the pressure roller (14) is in contact with the outer side of the steel coil (5). S2. Adhesion: The cylinder (2) drives the synchronization mechanism (3) to move the pressure roller frame (41) at both ends toward each other, and the pressure roller frame (41) drives the pressure roller (42) to adhere to the two end faces of the steel coil (5); S3. Coiling: When the steel coil (5) rotates around the drum (15) to unwind, it drives the pressure rollers (42) on both sides of the steel coil (5) to rotate. The steel coil (5) is constrained by the pressure rollers (42) on both sides to maintain its existing conveying direction, thereby avoiding the outer ring from overflowing.