Automatic feeding device of steel coil uncoiler

Abstract

The utility model relates to the field of metallurgical machinery automation, in particular to an automatic feeding device of a steel coil uncoiler, which comprises an uncoiler, a rotating plate and the like, a feeding trolley is slidably connected to the front end of the uncoiler, an electric push rod is mounted in the middle of the feeding trolley, a piston rod of the electric push rod is connected with a fixed seat, and a stepping motor is mounted on the right side of the fixed seat. An output shaft of the stepping motor penetrates through the fixing base, one end of the rotating plate is connected with the output shaft of the stepping motor, the other end of the rotating plate is connected with a triangular plate, pressure sensors are installed on slopes on the two sides of the triangular plate and are in extrusion fit with the hollow outer ring of the steel coil, and a limiting assembly used for pushing the steel coil to move towards the middle is arranged in the middle of the feeding trolley. The electric push rod drives the fixing base to move front and back, the rotating plate is controlled by the stepping motor to rotate, the pressure sensor on the triangular plate can accurately detect the position of the inner wall of the steel coil, and automatic centering and positioning of the steel coil are achieved through meshing transmission of the double-end gear rod, the first rack and the second rack.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical machinery automation, and in particular to an automatic feeding device for a steel coil uncoiler. Background Technology

[0002] In the field of metal processing, steel coils, as the initial raw material for steel products such as steel plates and strips, need to be uncoiled by an uncoiler before entering subsequent processing steps. Traditional uncoilers typically use a load-bearing shaft as the core support structure for the steel coil. Its working principle is as follows: the hollow center of the steel coil is fitted onto the surface of the load-bearing shaft. Through the radial expansion of the load-bearing shaft, it tightly fits against the inner wall of the steel coil, thereby achieving stable support and rotational drive for the steel coil. This process requires that the hollow inner diameter of the steel coil must be precisely aligned with the outer diameter of the load-bearing shaft; otherwise, it will lead to installation difficulties or even equipment damage.

[0003] Currently, common steel coil loading equipment typically consists of a hydraulic lifting device and a lateral translation mechanism. Because the uncoiler's load-bearing shaft needs to be kept suspended to allow for rotation, the height of the steel coil must be repeatedly adjusted using the hydraulic lifting device during loading to initially align its hollow center with the load-bearing shaft axis. Specifically, the operator needs to manipulate the hydraulic system to repeatedly raise and lower the steel coil vertically, visually observing the relative position between the coil's end face and the load-bearing shaft, gradually correcting the coil height until they are coaxial. Then, the lateral translation mechanism is used to move the steel coil horizontally, allowing its hollow core to fit onto the load-bearing shaft.

[0004] However, existing feeding technology has significant drawbacks: First, the alignment of the steel coil and the load-bearing shaft relies entirely on manual visual judgment, and the operator needs to have rich experience to quickly complete the alignment; otherwise, a lot of time is spent on repeated adjustments. Second, the steel coil is also prone to shaking due to inertia, which affects the positioning accuracy. Utility Model Content

[0005] To overcome the drawbacks of reliance on manual labor and low adjustment efficiency, this utility model provides an automatic feeding device for a steel coil uncoiler, aiming to solve the above-mentioned shortcomings.

[0006] An automatic feeding device for a steel coil uncoiler includes an uncoiler and a rotating plate. A feeding trolley is slidably connected to the front end of the uncoiler. The feeding trolley consists of a drive base, a central gap, and a supporting top plate. The top plate of the feeding trolley carries the steel coil. An electric push rod is installed in the middle of the feeding trolley. The piston rod of the electric push rod is connected to a fixed seat. A stepper motor is installed on the right side of the fixed seat. The output shaft of the stepper motor passes through the fixed seat. One end of the rotating plate is located inside the fixed seat and is connected to the output shaft of the stepper motor. A triangular plate is connected to the other end of the rotating plate. Pressure sensors are installed on both inclined surfaces of the triangular plate. The pressure sensors are pressed together with the hollow outer ring of the steel coil. A controller for reading the pressure values ​​of the pressure sensors is installed inside the feeding trolley. The controller is used to control the height of the supporting top plate of the feeding trolley. A limiting component for pushing the steel coil to move towards the center is provided in the middle of the feeding trolley.

[0007] As an improvement to the above solution, the limiting component includes a double-headed gear rod. First racks are connected to both sides of the fixed base. A support plate is connected to the top surface of the feeding trolley drive base. The support plates are located on the left and right sides of the electric push rod. The first racks are slidably connected to the support plates. Mounting seats are connected to both sides of the support plates. Connecting plates are connected to both sides of the feeding trolley drive base. A second rack is slidably connected to the connecting plates in a vertical direction. The double-headed gear rod is rotatably connected to the mounting seat in the middle. One end of the double-headed gear rod meshes with the first rack, and the other end meshes with the second rack. The second rack is pressed against the steel coil.

[0008] As an improvement to the above solution, several rollers are rotatably connected to the support plate.

[0009] As an improvement to the above solution, the front end of the uncoiler is connected to a crash barrier, and one end of the rotating plate connected to the triangular plate is located in the middle of the crash barrier.

[0010] As an improvement to the above solution, a sponge pad is connected to the top of the second rack.

[0011] As an improvement to the above solution, stabilizing blocks are connected to both the left and right sides of the top plate of the feeding trolley, and the second rack is slidably connected to the stabilizing blocks.

[0012] As an improvement to the above solution, when the rotating plate is vertically upward, the center point of the two pressure sensors is located on the extension line of the axis of the uncoiling machine's load-bearing shaft.

[0013] As an improvement to the above solution, the distance between the upper and lower ends of the two pressure sensors is greater than the diameter of the hollow steel coil.

[0014] As an improvement to the above solution, a "T"-shaped block is provided at the connection between the rear side of the connecting plate and the second rack, and a "T"-shaped groove is opened at the connection between the front side of the second rack and the connecting plate.

[0015] This utility model has the following advantages:

[0016] 1. The fixed base is moved back and forth by an electric push rod, and the rotating plate controlled by a stepper motor rotates, so that the pressure sensor on the triangular plate can accurately detect the position of the inner wall of the steel coil. The automatic centering and positioning of the steel coil is achieved by the meshing transmission of the double-headed gear rod with the first and second racks.

[0017] 2. The controller processes the pressure difference between the pressure sensors on both sides in real time and intelligently adjusts the lifting height of the feeding trolley. The coordinated operation of these components forms a complete closed-loop control system, realizing the automatic alignment function between the steel coil and the uncoiler's load-bearing shaft. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the mounting structure of the fixed base and the stepper motor of this utility model.

[0020] Figure 3 This is a schematic diagram of the installation structure of the first rack and support plate of this utility model.

[0021] Figure 4 This is an exploded view showing the connection relationship between the connecting plate and the second rack of this utility model.

[0022] The labels in the diagram are as follows: 1-Uncoiler, 2-Feeding trolley, 3-Steel coil, 4-Electric push rod, 5-Fixed seat, 6-Stepper motor, 7-Rotating plate, 8-Triangle plate, 9-Pressure sensor, 10-First rack, 11-Support plate, 12-Mounting seat, 13-Double-headed gear rod, 14-Connecting plate, 15-Second rack, 16-Roller, 17-Bumper frame, 18-Sponge pad, 19-Stabilizing block. Detailed Implementation

[0023] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used herein refer only to the position of the illustrated structure in the corresponding drawings. The component numbers used herein, such as "first," "second," etc., are merely for distinguishing the described objects and have no sequential or technical meaning. Furthermore, terms such as "connection" and "linkage," unless otherwise specified, include both direct and indirect connections.

[0024] Example: An automatic feeding device for a steel coil uncoiler, such as... Figures 1-3As shown, the assembly includes an uncoiler 1, a feeding trolley 2, a steel coil 3, an electric push rod 4, a fixed base 5, a stepper motor 6, a rotating plate 7, a triangular plate 8, a pressure sensor 9, and a limit assembly. The feeding trolley 2 is slidably connected to the front end of the uncoiler 1. The feeding trolley 2 consists of a drive base, a central clearance, and a support top plate. The support top plate of the feeding trolley 2 supports the steel coil 3 and is equipped with a height adjustment function, automatically adjusting its height according to subsequent alignment. An electric push rod 4 is installed in the middle of the feeding trolley 2. The piston rod of the electric push rod 4 is connected to the fixed base 5. A stepper motor 6 is installed on the right side of the fixed base 5, and the output shaft of the stepper motor 6 passes through the fixed base 5. One end of the rotating plate 7 is located inside the fixed base 5 and connected to the output shaft of the stepper motor 6. The other end of the rotating plate 7 is connected to a triangular plate 8. Pressure sensors 9 are symmetrically installed on the inclined surfaces of both sides of the triangular plate 8, with their detection surfaces facing the steel coil. 3. In the center direction, the distance between the outermost ends of the two pressure sensors 9 is greater than the hollow inner diameter of the steel coil 3. The pressure sensors 9 are pressed together with the hollow outer ring of the steel coil 3. When the rotating plate 7 is vertically upward, the center point of the two pressure sensors 9 is located on the extension line of the load-bearing shaft axis of the uncoiler 1. The feeding trolley 2 is equipped with a controller that reads the pressure values ​​of the pressure sensors 9. The controller is used to control the height of the support plate of the feeding trolley 2. The controller sets a range for the difference in readings of the two pressure sensors 9. If the pressure values ​​of the two pressure sensors 9 differ too much and exceed the set range, the controller adjusts the height of the support plate of the feeding trolley 2 according to the position of the pressure sensor 9 with the larger value. That is, if the reading of the top pressure sensor 9 is larger, the controller controls the feeding trolley 2 to push the steel coil 3 upward. The sensors detect the contact pressure in real time and transmit the data to the controller. If the pressure difference between the two sides exceeds the set range, the controller will start the height adjustment program. In the ideal alignment state, the sensors on both sides should display similar pressure values. The feeding trolley 2 is equipped with a limiting component in the middle to push the steel coil 3 to move towards the center.

[0025] like Figure 3 and Figure 4As shown, the limiting assembly includes a first rack 10, a support plate 11, a mounting base 12, a double-ended gear rod 13, a connecting plate 14, and a second rack 15. The first rack 10 is connected to both sides of the fixed base 5. The support plate 11 is connected to the top surface of the drive base of the feeding trolley 2. The support plate 11 is located on the left and right sides of the electric push rod 4. The first rack 10 is slidably connected to the support plate 11. Mounting bases 12 are connected to both sides of the support plate 11. Connecting plates 14 are connected to both sides of the drive base of the feeding trolley 2. A second rack 15 is vertically slidably connected to the connecting plate 14. A "T"-shaped block is provided at the connection between the rear side of the connecting plate 14 and the second rack 15. A "T"-shaped groove is opened at the connection between the front side of the second rack 15 and the connecting plate 14. The double-headed gear rod 13 is rotatably connected to the mounting base 12 in the middle. One end of the double-headed gear rod 13 meshes with the first rack 10, and the other end meshes with the second rack 15. The second rack 15 is pressed and engaged with the steel coil 3. The two second racks 15 move synchronously to gradually correct the steel coil 3 that may be deviated to the center position.

[0026] like Figure 3 As shown, it also includes a guide roller 16. Several guide rollers 16 are rotatably connected to the support plate 11. When the first rack 10 slides along the support plate 11, the guide rollers 16 roll accordingly, converting sliding friction into rolling friction, ensuring that the electric push rod 4 runs smoothly when pushing the fixed seat 5.

[0027] like Figure 1 As shown, it also includes a crash barrier 17. The front end of the uncoiler 1 is connected to the crash barrier 17, and one end of the rotating plate 7 connected to the triangular plate 8 is located in the middle of the crash barrier 17. When the rotating plate 7 rotates and resets, the triangular plate 8 is completely within the protection range of the crash barrier 17. The crash barrier 17 adopts a buffer design, which can effectively absorb the impact force generated by accidental collisions and protect the precision sensor from damage.

[0028] like Figure 2 As shown, it also includes a sponge pad 18. The top of the second rack 15 is connected to the sponge pad 18. When the second rack 15 rises and contacts the outer wall of the steel coil 3, the sponge pad 18 absorbs the impact force through elastic deformation.

[0029] like Figure 2 As shown, it also includes a stabilizing block 19. Stabilizing blocks 19 are connected to both sides of the top plate of the feeding trolley 2. The second rack 15 is slidably connected to the stabilizing block 19. The stabilizing block 19 ensures that the second rack 15 maintains a vertical trajectory during the rising or falling process, avoiding skewness or jamming. At the same time, it enhances the lateral limiting stability of the second rack 15 on the steel coil 3, making the centering and correction process of the steel coil 3 more accurate and reliable.

[0030] Workers use lifting equipment to place the steel coil 3 onto the feeding trolley 2. At this time, the piston rod of the electric push rod 4 retracts, the rotating plate 7 moves vertically downward, and the top of the second rack 15 is located inside the stabilizing block 19. Since no parts obstruct the movement of the steel coil 3, it is easy for the steel coil 3 to move onto the feeding trolley 2. After the steel coil 3 is placed on the feeding trolley 2, the electric push rod 4 is activated. As the electric push rod 4 pushes the fixed seat 5 forward, the first rack 10 moves along with the fixed seat 5. The first rack 10 slides on the support plate 11 via the roller 16. The roller 16 reduces friction. Because one end of the double-headed gear rod 13 meshes with the first rack 10... Therefore, when the first rack 10 moves, it drives the double-headed gear rod 13 to rotate. The double-headed gear rod 13 drives the second rack 15, which meshes with the other end, to slide upward. The second rack 15 slides upward along the connecting plate 14 and the stabilizing block 19. The outer diameter of the steel coil 3 is close to the distance between the two second racks 15. Thus, when the two second racks 15 move upward, they can push the steel coil 3 closer to the middle, thereby limiting the position of the steel coil 3. The sponge pad 18 at the top of the second rack 15 can buffer the impact between the offset steel coil 3 and the second rack 15, thereby ensuring the surface quality of the steel coil 3. At this time, the feeding trolley 2 moves closer to the load-bearing shaft of the uncoiler 1.

[0031] After the electric push rod 4 fully pushes out the fixed seat 5 and the rotating plate 7, the operator starts the stepper motor 6. The stepper motor 6 drives the rotating plate 7 to rotate 180 degrees counterclockwise. The triangular plate 8 and the pressure sensor 9 rotate upward around the fixed seat 5. The piston rod of the electric push rod 4 pulls the fixed seat 5 backward. The stepper motor 6 maintains the state of the rotating plate 7, and the rotating plate 7 moves closer to the steel coil 3. At this time, the pressure sensor 9 gradually inserts into the middle of the steel coil 3. When the rotating plate 7 is vertically upright, the center point of the two pressure sensors 9 passes through the axis of the load-bearing shaft of the uncoiler 1. After one of the pressure sensors 9 contacts the steel coil 3, the difference in the values ​​read by the two pressure sensors 9 is large, exceeding the set range. Then, the controller adjusts the feeding trolley 2. If only the upper pressure sensor 9 has a reading, it means that only the upper pressure sensor 9 is pressing against the steel coil 3, so the position of the steel coil 3 is too low. The feeding trolley 2... The steel coil 3 needs to be pushed upwards. When the feeding trolley 2 pushes the steel coil 3, the electric push rod 4 stops. The opening of the feeding trolley 2 and the electric push rod 4 are controlled by the controller. After the feeding trolley 2 temporarily pushes the steel coil 3, the electric push rod 4 restarts and pulls the pressure sensor 9 close to the steel coil 3. The height of the steel coil 3 is adjusted by the difference between the readings of the upper and lower pressure sensors 9. Finally, the pressure values ​​measured by the two pressure sensors 9 are close to each other. Within the set range, it means that the axis of the hole of the steel coil 3 is aligned with the axis of the load-bearing shaft of the uncoiler 1. Finally, the feeding trolley 2 pushes the steel coil 3 to be fitted onto the load-bearing shaft of the uncoiler 1. The uncoiler 1 fixes the steel coil 3. After the feeding trolley 2 is separated from the steel coil 3, it moves in the opposite direction along the track of the uncoiler 1 to reset. The electric push rod 4 pulls the fixed seat 5 to slide backward to reset. The stepper motor 6 drives the rotating plate 7 to rotate 180 degrees clockwise. The second rack 15 is reset through the double-headed gear rod 13.

[0032] After the rotating plate 7 is fully lowered, the triangular plate 8 and the pressure sensor 9 are located in the middle of the anti-collision frame 17, so that the anti-collision frame 17 can protect the triangular plate 8 and the pressure sensor 9 from being hit.

[0033] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. An automatic feeding device for a steel coil uncoiler, characterized in that, The system includes an uncoiler (1) and a rotating plate (7). A feeding trolley (2) is slidably connected to the front end of the uncoiler (1). The feeding trolley (2) consists of a drive base, a central gap, and a supporting top plate. The top plate of the feeding trolley (2) carries a steel coil (3). An electric push rod (4) is installed in the middle of the feeding trolley (2). The piston rod of the electric push rod (4) is connected to a fixed seat (5). A stepper motor (6) is installed on the right side of the fixed seat (5). The output shaft of the stepper motor (6) passes through the fixed seat (5). One end of the rotating plate (7) is located on the fixed seat. 5) Inside, and connected to the output shaft of the stepper motor (6), the other end of the rotating plate (7) is connected to a triangular plate (8), and pressure sensors (9) are installed on both sides of the inclined surface of the triangular plate (8). The pressure sensors (9) are squeezed and cooperated with the hollow outer ring of the steel coil (3). The feeding trolley (2) is equipped with a controller for reading the pressure value of the pressure sensor (9), and the controller is used to control the height of the top plate of the feeding trolley (2). The feeding trolley (2) is equipped with a limiting component in the middle for pushing the steel coil (3) to move towards the middle.

2. The automatic feeding device for a steel coil uncoiler as described in claim 1, characterized in that, The limiting assembly includes a double-headed gear rod (13), and the fixed base (5) is connected to the left and right sides with a first rack (10). The top surface of the feed trolley (2) drive base is connected to a support plate (11), and the support plate (11) is located on the left and right sides of the electric push rod (4). The first rack (10) is slidably connected to the support plate (11). The support plate (11) is connected to the left and right sides with mounting bases (12). The feed trolley (2) drive base is connected to the left and right sides with connecting plates (14). The connecting plate (14) is slidably connected to a second rack (15) in the vertical direction. The double-headed gear rod (13) is rotatably connected to the mounting base (12) in the middle. One end of the double-headed gear rod (13) meshes with the first rack (10), and the other end meshes with the second rack (15). The second rack (15) is pressed and engaged with the steel coil (3).

3. The automatic feeding device for a steel coil uncoiler as described in claim 2, characterized in that, Several rollers (16) are rotatably connected to the support plate (11).

4. The automatic feeding device for a steel coil uncoiler as described in claim 3, characterized in that, The front end of the uncoiler (1) is connected to a crash shield (17), and one end of the rotating plate (7) connected to the triangular plate (8) is located in the middle of the crash shield (17).

5. The automatic feeding device for a steel coil uncoiler as described in claim 4, characterized in that, The top of the second rack (15) is connected to a sponge pad (18).

6. The automatic feeding device for a steel coil uncoiler as described in claim 5, characterized in that, The top plate of the feeding trolley (2) is connected to stabilizing blocks (19) on both the left and right sides, and the second rack (15) is slidably connected to the stabilizing blocks (19).

7. The automatic feeding device for a steel coil uncoiler as described in claim 6, characterized in that, When the rotating plate (7) is vertically upward, the center point of the two pressure sensors (9) is located on the extension line of the load-bearing shaft axis of the uncoiler (1).

8. The automatic feeding device for a steel coil uncoiler as described in claim 7, characterized in that, The distance between the upper and lower ends of the two pressure sensors (9) is greater than the diameter of the hollow steel coil (3).

9. The automatic feeding device for a steel coil uncoiler as described in claim 8, characterized in that, A "T"-shaped block is provided at the connection between the rear side of the connecting plate (14) and the second rack (15), and a "T"-shaped groove is provided at the connection between the front side of the second rack (15) and the connecting plate (14).

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