A type of roller inspection station

Abstract

This invention provides a ground roller inspection station, comprising two ground rollers for supporting and conveying a steel coil, an uncoiling and rewinding device for opening the steel coil, an inspection table for inspecting the surface of the strip, and a guide roller that cooperates with the uncoiling and rewinding device to clamp and feed the strip. The uncoiling and rewinding device is located between the ground rollers and the inspection table. The ground roller closer to the uncoiling and rewinding device is arranged on a base together with the uncoiling and rewinding device. The guide roller is positioned close to the inspection table. The ground roller inspection station also includes a first driving device for driving the uncoiling and rewinding device to swing between the steel coil and the guide roller. A transition guide plate for strip conveying is provided between the ground roller closer to the uncoiling and rewinding device and the guide roller. This invention also provides an inspection method for the ground roller inspection station.

Description

Technical Field

[0001] This invention relates to the field of strip steel inspection stations, and more particularly to a ground roller inspection station. Background Technology

[0002] Strip steel inspection stations are generally divided into offline and online types. Online stations are suitable for continuous pickling and rolling production lines, where strip steel of appropriate length is cut using flying shears and then ground and inspected at a dedicated location. Offline stations are typically located at the exit of the pickling and rolling mill, where an uncoiler is installed to recoil the strip, and suspended grinding and inspection are performed at the inspection table. Inspection stations are usually integrated with the pickling and rolling mill of a continuous line. As the requirements for strip steel surface finish gradually increase, some single-stand cold rolling mills and leveling mills have also been equipped with inspection stations. However, existing offline inspection stations at the exits of cold rolling mills and leveling mills suffer from insufficient equipment integration, inefficient equipment layout, and high costs. This invention provides a novel structure for offline inspection stations located at the exits of cold rolling mills and leveling mills to overcome the aforementioned problems. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a roller inspection station. This invention solves at least some of the problems in the prior art.

[0004] This invention is implemented as follows:

[0005] This invention provides a ground roller inspection station, comprising two ground rollers for supporting and conveying steel coils, an uncoiling and rewinding device for opening the steel coils, an inspection table for inspecting the surface of the strip steel, and a guide roller that cooperates with the uncoiling and rewinding device to clamp and convey the strip steel. The uncoiling and rewinding device is located between the ground rollers and the inspection table. The ground roller closer to the uncoiling and rewinding device is arranged on a base together with the uncoiling and rewinding device. The guide roller is located close to the inspection table. The ground roller inspection station also includes a first driving device for driving the uncoiling and rewinding device to swing between the steel coil and the guide roller. A transition guide plate for conveying the strip steel is provided between the ground roller closer to the uncoiling and rewinding device and the guide roller.

[0006] Furthermore, a polyurethane layer is applied to the surface of the roller.

[0007] Furthermore, the ground roller inspection station also includes a guide plate assembly for conveying the steel coil head from the guide roller to the inspection table. The guide plate assembly is located between the inspection table and the guide roller, and includes an upper guide plate and a lower guide plate.

[0008] Furthermore, the uncoiling and rewinding device includes a swing arm and an uncoiling knife for opening the steel coil. The uncoiling and rewinding device also includes a pinch roller that presses against the steel coil during uncoiling to facilitate uncoiling by the uncoiling knife, presses against the steel coil during rewinding to facilitate rewinding by the ground roller, and works with the guide roller to pinch and feed the strip steel. A first driving device drives the swing arm to swing between the steel coil and the guide roller. The swing arm is hinged to the base. A swing frame is mounted on the swing arm. The uncoiling knife and the pinch roller are both mounted on the swing frame. The uncoiling and rewinding device also includes a second driving device that drives the swing frame to rotate.

[0009] Furthermore, the uncoiling and reversing device also includes a reversing roller that tilts the steel coil head upward to facilitate the feeding of the steel coil head from the guide plate assembly to the inspection table. The pinch roller is located in the middle of the swing frame, the uncoiling knife is located at the entrance of the swing frame, the reversing roller is located at the exit of the swing frame, and the second driving device drives the swing frame to rotate around the center of the pinch roller.

[0010] Furthermore, the inspection table includes a cast iron platform and a stainless steel platform, with the cast iron platform located between the guide plate assembly and the stainless steel platform, and the cast iron platform and the stainless steel platform being fixedly connected by adjusting bolts.

[0011] Furthermore, the first driving device is a first swing hydraulic cylinder, and the second driving device is a second swing hydraulic cylinder.

[0012] Furthermore, the swing arm and the swing frame are both connected to the shaft end of the pinch roller.

[0013] The present invention also provides an inspection method for a roller inspection station, comprising the following steps:

[0014] S1. When the strip steel needs to be inspected, the steel coil is transported by the steel coil car to the ground roller and put down.

[0015] S2. The first swing hydraulic cylinder retracts, and the pinch roller moves closer to the steel coil until the pinch roller presses against the steel coil.

[0016] S3. The second swing hydraulic cylinder extends, the swing frame rotates, and the uncoiling knife presses against the steel coil to perform the uncoiling operation;

[0017] S4. Start the ground roller. As the ground roller rotates, the steel coil is gradually opened. The steel coil strip head unfolds smoothly along the uncoiler and pinch roller and is transported backward.

[0018] S5. After the strip has been unrolled for a certain distance, the first swing hydraulic cylinder extends, the pinch roller swings back to above the steering roller, and the pinch roller cooperates with the steering roller to press the end of the steel coil between the two rollers.

[0019] S6. The pinch roller, the steering roller and the ground roller work together to thread the strip. After the steel coil strip head passes through the pinch roller, the second swing hydraulic cylinder extends, the swing frame rotates, and the reverse bending roller also presses against the steering roller. The pinch roller, the steering roller and the reverse bending roller work together to make the steel coil strip head bend upward. The upward-curved steel coil strip head passes between the upper guide plate and the lower guide plate and reaches the cast iron platform.

[0020] S7. When the steel coil is unrolled to the appropriate length, perform grinding inspection on the cast iron platform;

[0021] S8. After the steel coil inspection is completed, the ground roller and the steering roller rotate in opposite directions to rewind the strip steel.

[0022] The present invention has the following beneficial effects:

[0023] 1. This invention provides a ground roller inspection station, which is arranged at the exit position of a cold rolling mill or a leveling machine, for inspecting scratches, abrasions, etc. on the surface of the strip steel, so as to facilitate timely detection of problems and thus ensure a good quality level of the strip steel surface.

[0024] 2. The ground roller inspection station provided by the present invention has a compact equipment layout and low cost, and can realize multiple functions such as strip uncoiling, inspection and strip head treatment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of a roller inspection station provided in an embodiment of the present invention;

[0027] Figure 2 This is a partial enlarged view of the stainless steel platform provided in an embodiment of the present invention;

[0028] Figure 3 An enlarged view of the connection between the stainless steel platform and the cast iron platform provided in an embodiment of the present invention;

[0029] Figure 4 This is a partial enlarged view of the cast iron platform provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the unwinding and rewinding device provided in an embodiment of the present invention;

[0031] Figure 6 Provided for embodiments of the present invention Figure 5 A magnified view of the area on the left;

[0032] Figure 7 Provided for embodiments of the present invention Figure 5 A magnified view of the right side;

[0033] Figure 8 An enlarged view of the steel coil portion provided in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the pinch roll along the width direction of the strip provided in an embodiment of the present invention;

[0035] Figure 10 Enlarged view of the roller portion provided in the embodiment of the present invention Figure 1 ;

[0036] Figure 11 Enlarged view of the roller portion provided in the embodiment of the present invention Figure 2 .

[0037] In the diagram: 1. Ground roller, 2. Uncoiling and reversing device, 3. Inspection table, 4. Base, 5. Steering roller, 6. Pinch roller, 7. Reversing roller, 8. Uncoiling knife, 9. Transition guide plate, 10. Swing frame, 11. Swing rod, 12. First swing hydraulic cylinder, 13. Steel coil, 14. Second swing hydraulic cylinder, 15. Cast iron platform, 16. Stainless steel platform, 17. Adjusting bolt, 18. Hinge point, 19. Upper guide plate, 20. Lower guide plate, 21. Intermediate shaft, 22. Reversing state. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, 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 accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0041] like Figures 1-11 Embodiment 1 of the present invention provides a ground roller inspection station, including two ground rollers 1 for supporting and conveying steel coils 13, an uncoiling and rewinding device 2 for opening the steel coil, an inspection table 3 for inspecting the surface of the strip steel, and a guide roller 5 that cooperates with the uncoiling and rewinding device 2 to clamp and convey the strip steel. The uncoiling and rewinding device 2 is located between the ground rollers 1 and the inspection table 3. The ground roller 1 on the side closer to the uncoiling and rewinding device 2 is arranged on a base 4 at the same time as the uncoiling and rewinding device 2. The guide roller 5 is arranged close to the inspection table 3. The ground roller inspection station also includes a first swing hydraulic cylinder 12 that drives the uncoiling and rewinding device 2 to swing between the steel coil 13 and the guide roller 5. A transition guide plate 9 for conveying the strip steel is provided between the ground roller 1 on the side closer to the uncoiling and rewinding device 2 and the guide roller 5. The opened steel coil is conveyed to the guide roller 5 via the transition guide plate 9.

[0042] The ground roller inspection station also includes a guide plate assembly for feeding the steel coil head from the guide roller 5 to the inspection table 3. The guide plate assembly is located between the inspection table 3 and the guide roller 5, and includes an upper guide plate 19 and a lower guide plate 20.

[0043] The uncoiling and rewinding device 2 includes a swing arm 11 and an uncoiling knife 8 for opening the steel coil. The uncoiling and rewinding device 2 also includes a clamping roller 6 that presses against the steel coil 13 during uncoiling to facilitate the uncoiling knife 8 to uncoil, presses against the steel coil 13 during rewinding to facilitate the rewinding of the ground roller 1, and cooperates with the guide roller 5 to clamp and feed the strip steel. A first swing hydraulic cylinder 12 drives the swing arm 11 to swing between the steel coil 13 and the guide roller 5. The swing arm 11 is hinged to the base 4 (hinge point 18 is shown in the figure). A swing frame 10 is installed on the swing arm 11. The uncoiling knife 8 and the clamping roller 6 are both installed on the swing frame 10. The uncoiling and rewinding device 2 also includes a second swing hydraulic cylinder 14 that drives the swing frame 10 to rotate. The uncoiling and rewinding device 2 also includes a rewinding roller 7 that makes the steel coil head tilt upwards to facilitate the steel coil head being sent from the guide plate assembly to the inspection table 3. The clamping roller 6 is located in the middle of the swing frame 10, the uncoiling knife 8 is located at the entrance of the swing frame 10, the rewinding roller 7 is located at the exit of the swing frame 10, and the second swing hydraulic cylinder 14 drives the swing frame 10 to rotate around the center of the clamping roller 6. Figure 6 The image shows the position of the swing frame 10 in the reverse bending state 22. (Example) Figure 9 The swing arm 11 and the swing frame 10 are both connected to the shaft end of the pinch roller 6. The reverse bending roller 7, the pinch roller 6, and the uncoiling knife 8 are all integrated and installed on the swing frame 10. The uncoiling and reverse bending device 2 can realize the functions of uncoiling, threading, pinching, and reverse bending of the belt head. The equipment has a high degree of integration, compact layout, and low cost.

[0044] The ground roll inspection station includes ground roll 1, uncoiling and rewinding device 2, and inspection table 3. Ground roll 1 is located at the exit position of the cold rolling mill and leveling unit, and can receive steel coils transported from the exit steel coil car. Both ground rolls 1 are driven by motors, and the roll surface is lined with polyurethane to prevent the steel coil from forming a pressure mark when it presses against the ground roll surface, which would affect the surface quality of the strip steel.

[0045] The uncoiling and reversing device 2 includes a guide roller 5, a pinch roller 6, a reversing roller 7, an uncoiling knife 8, and a transition guide plate 9. The guide roller 5 is the lower roller, and a transition guide plate 9 is set between the ground roller and the guide roller. The guide roller 5 is arranged behind the transition guide plate 9. The transition guide plate 9 is used to guide the strip from the ground roller 1 to the guide roller 5. The guide roller 5 is driven by a motor, and the guide roller 5 cooperates with the pinch roller 6 to pinch the strip.

[0046] Along the width direction of the strip, the swing arm 11 is arranged on the outside of the swing frame 10.

[0047] The shaft of the pinch roller 6 is installed inside the swing arm 11. The first swing hydraulic cylinder 12 can drive the swing arm 11 to rotate and swing the pinch roller 6, so that the pinch roller 6 can either lean against the coil (towards the steel coil 13) or press against the guide roller 5. Since the pinch roller 6 has a certain swing stroke, it can simultaneously perform two functions: pressing against the steel coil to assist the uncoiling knife 8 in opening the strip head and pressing against the guide roller 5 to assist in threading the strip. Therefore, a certain amount of space is required to arrange the first swing hydraulic cylinder 12.

[0048] The second swing hydraulic cylinder 14 can drive the swing frame 10 to rotate around the center of the pinch roller 6, so as to realize the function of the uncoiling knife 8 opening the belt head or the reverse bending roller 7 pressing the belt head.

[0049] The pinch roller 6 adopts the design of intermediate shaft 21. The shaft end is used to install the swing rod 11 and the swing frame 12 respectively by utilizing the difference in roller diameter. In the width direction, the swing rod 11 is arranged on the outside of the swing frame 12.

[0050] The head ear of the second swing hydraulic cylinder 14 is connected to the hinge point at the entrance of the swing frame 12, and the tail ear is fixed to the support of the swing rod 11.

[0051] During uncoiling, the second swing hydraulic cylinder 14 can be adjusted to a suitable stroke according to the outer diameter of the steel coil 13, and the position is confirmed by detecting that the pressure has reached the set value. Figure 8 The diagram shows two sizes of steel coils, and the different rotation angles of the swing arm 11 and the swing frame 10 for different sizes of steel coils.

[0052] The inspection table 3 includes a cast iron platform 15 and a stainless steel platform 16. The cast iron platform 15 is located between the stainless steel platform 16 and the uncoiling and rewinding device 2. The cast iron platform 15 and the stainless steel platform 16 are fixedly connected by adjusting bolts 17. The cast iron platform 15 is located after the uncoiling and rewinding device 2. The good flatness of the cast iron platform 15 facilitates the unfolding and inspection of the strip surface. The stainless steel platform 16 serves as an extension of the cast iron platform 15, allowing the strip to unfold to a sufficient length. The strip head is located on the stainless steel platform 16. First, the few turns that affect the strip head are removed on the stainless steel platform 16 before the strip inspection begins.

[0053] Embodiment 2 of the present invention provides an inspection method for a ground roller inspection station: S1. When the strip needs to be inspected, the steel coil 13 is transported by the coil trolley to the ground roller 1 and placed down; S2. The first swing hydraulic cylinder 12 retracts, and the pinch roller 6 moves to the right towards the steel coil 13 until the pinch roller 6 presses against the steel coil 13, and the hydraulic pressure is detected to reach a preset value; S3. The second swing hydraulic cylinder 14 extends, the swing frame 10 rotates, and the uncoiler 8 presses against the steel coil 13 to perform the uncoiling operation; S4. The ground roller 1 is started, and as the ground roller 1 rotates, the steel coil 13 is gradually opened, and the strip head unfolds smoothly along the uncoiler 8 and the pinch roller 6, and is transported backward; S5. After the strip has unfolded a certain distance, the first swing hydraulic cylinder 12 retracts, and the pinch roller 6 moves to the right towards the steel coil 13 until the strip head is pressed against the steel coil 13 and the steel coil 13 is pressed against the steel coil 13 to perform the uncoiling operation; S4. The first swing hydraulic cylinder 14 extends, and the steel coil 13 gradually opens as the ground roller 1 rotates, and the strip head unfolds smoothly along the uncoiler 8 and the pinch roller 6, and is transported backward; S5. After the strip has unfolded a certain distance, the first swing hydraulic cylinder 14 retracts, and the steel coil 13 is pressed against the steel coil 13 to perform the uncoiling operation; S6. The first swing hydraulic cylinder 14 retracts, and the steel coil 13 rotates to perform the uncoiling operation; S7. The first swing hydraulic cylinder 14 retracts, and the steel coil 13 rotates to perform the uncoiling operation; S8. The first swing hydraulic cylinder 14 retracts, and the steel coil 13 rotates to perform the uncoiling operation; S9. The first swing Cylinder 12 extends, and pinch roller 6 swings back to the left above steering roller 5. Pinch roller 6 and steering roller 5 cooperate to press the head of the steel coil between the two rollers. S6, pinch roller 6, steering roller 5 and ground roller 1 cooperate to thread the strip. After the strip head passes through pinch roller 6, the second swing hydraulic cylinder 14 extends, swing frame 10 rotates, and reverse bending roller 7 also presses against steering roller 5. Pinch roller 6, steering roller 5 and reverse bending roller 7 cooperate to bend the strip head, so that the strip head passes between upper guide plate 19 and lower guide plate 20 and smoothly reaches cast iron platform 15. S7, when the steel coil is unfolded to a suitable length, it is ground and inspected at cast iron platform 15. S8, after the steel coil is inspected, ground roller 1 and steering roller 5 rotate in opposite directions to rewind the strip. When the steel coil 13 is rewound, pinch roller 6 presses against the steel coil 13 to tighten the strip head and assist in tightening the strip.

[0054] The pinch roller 6, the steering roller 5, and the reverse bending roller 7 work together to make the belt tip curl upwards, making it easier to thread the belt later.

[0055] The roller inspection station provided by this invention features a clever equipment layout. The pinch roller serves multiple purposes, simultaneously functioning as both a pinch roller and a pressure roller, assisting in belt threading and pressing. This invention integrates the uncoiling knife onto the swing frame, saving on equipment investment. The reverse bending roller, along with the pinch roller and the steering roller, works together to handle the belt head.

[0056] In this embodiment, both the drive motors of the ground roller 1 and the guide roller 5 are equipped with incremental encoders to achieve coordinated control with the ground roller as the master speed controller. Simultaneously, an absolute encoder is arranged on the operating side of the ground roller 1, which, in conjunction with a photoelectric switch for lead tracking, controls the lead position during rewinding. The photoelectric switch is located at the transition guide plate 9 of the unwinding and rewinding device.

[0057] The ground roller inspection station can be located at the exit walking beam of the cold rolling mill or leveling unit, replacing one of the fixed saddles with a ground roller, or it can be built separately, with steel coils transported from the coiler to the ground roller by a coil car. Both options are acceptable, and the attached diagram illustrates the separate arrangement.

[0058] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ground roll inspection station characterized by: The system includes two ground rollers for supporting and conveying the steel coil, an uncoiling and rewinding device for opening the steel coil, an inspection table for inspecting the surface of the strip, and a guide roller that cooperates with the uncoiling and rewinding device to clamp and feed the strip. The uncoiling and rewinding device is located between the ground rollers and the inspection table. The ground roller closest to the uncoiling and rewinding device is arranged on the same base as the uncoiling and rewinding device, and the guide roller is located near the inspection table. The ground roller inspection station also includes a first drive device for driving the uncoiling and rewinding device to swing between the steel coil and the guide roller. A transition guide plate for conveying the strip is provided between the ground roller closest to the uncoiling and rewinding device and the guide roller. The ground roller inspection station also includes a guide plate assembly for feeding the strip head from the guide roller to the inspection table. The guide plate assembly is located between the inspection table and the guide roller and includes an upper guide plate and a lower guide plate. The uncoiling and rewinding device includes a swing arm and an uncoiling knife for opening the steel coil. The uncoiling and rewinding device also includes pressing against the steel coil during uncoiling to facilitate uncoiling by the uncoiling knife and pressing against the steel coil during rewinding. The coil is easily wound by the ground roller and used in conjunction with the guide roller to clamp and feed the strip steel. A first drive device drives a swing arm to swing between the steel coil and the guide roller. The swing arm is hinged to the base. A swing frame is mounted on the swing arm. The uncoiler and clamping roller are both mounted on the swing frame. The uncoiler and reverse bending device also includes a second drive device to drive the swing frame to rotate. The uncoiler and reverse bending device also includes a reverse bending roller that tilts the steel coil strip head upwards to facilitate the feeding of the steel coil strip head from the guide plate assembly to the inspection table. The clamping roller is located in the middle of the swing frame. The uncoiler is located at the entrance of the swing frame, and the reverse bending roller is located at the exit of the swing frame. The second drive device drives the swing frame to rotate around the center of the clamping roller. The inspection table includes a cast iron platform and a stainless steel platform. The cast iron platform is located between the guide plate assembly and the stainless steel platform. The cast iron platform and the stainless steel platform are fixedly connected by adjusting bolts. The first drive device is a first swing hydraulic cylinder, and the second drive device is a second swing hydraulic cylinder.

2. The ground roll inspection station of claim 1, wherein: The roller surface is coated with a polyurethane layer.

3. The ground roll inspection station of claim 1, wherein: The swing arm and swing frame are both connected to the shaft end of the pinch roller.

4. A method for inspecting a roller inspection station, applied to the roller inspection station as described in any one of claims 1-3, characterized in that, Includes the following steps: S1. When the strip steel needs to be inspected, the steel coil is transported by the steel coil car to the ground roller and put down. S2. The first swing hydraulic cylinder retracts, and the pinch roller moves closer to the steel coil until the pinch roller presses against the steel coil. S3. The second swing hydraulic cylinder extends, the swing frame rotates, and the uncoiling knife presses against the steel coil to perform the uncoiling operation; S4. Start the ground roller. As the ground roller rotates, the steel coil is gradually opened. The steel coil strip head unfolds smoothly along the uncoiler and pinch roller and is transported backward. S5. After the strip has been unrolled for a certain distance, the first swing hydraulic cylinder extends, the pinch roller swings back to above the steering roller, and the pinch roller cooperates with the steering roller to press the end of the steel coil between the two rollers. S6. The pinch roller, the steering roller and the ground roller work together to thread the strip. After the steel coil strip head passes through the pinch roller, the second swing hydraulic cylinder extends, the swing frame rotates, and the reverse bending roller also presses against the steering roller. The pinch roller, the steering roller and the reverse bending roller work together to make the steel coil strip head bend upward. The upward-curved steel coil strip head passes between the upper guide plate and the lower guide plate and reaches the cast iron platform. S7. When the steel coil is unrolled to the appropriate length, perform grinding inspection on the cast iron platform; S8. After the steel coil inspection is completed, the ground roller and the steering roller rotate in opposite directions to rewind the strip steel.

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