Automatic wire rod uncoiling control system

Abstract

The utility model discloses a kind of wire rod automatic uncoiling control system, system includes uncoiling trolley, and track for the front and rear operation of uncoiling trolley, the first end close to track is equipped with fixed stack location;Fixed stack location includes the platform being arranged in parallel with track and being respectively located at both sides of track, platform middle part has the passage for the top of uncoiling trolley to pass through;The first end of fixed stack location is flush with the first end of track;The first end of track is equipped with laser range finder, and laser range finder is electrically connected with PLC control system;The utility model detects the position of uncoiling trolley in real time by laser range finder, and data is transmitted to PLC control system, avoid the problem that parking is too early or too late due to manual operation, eliminate the larger gap between steel coil, so that the crane does not need to carry out steel coil alignment operation again in the process of hoisting and warehousing, improve work efficiency and product stability.

Description

Technical Field

[0001] This utility model belongs to the field of wire unwinding technology, specifically relating to an automatic wire unwinding control system. Background Technology

[0002] Uncoiling is the final step in wire rod rolling. It involves moving the steel coils, carried by the PF chain C-hook, to a fixed stack, where they are then hoisted into the warehouse by a finished product crane. Currently, uncoiling is done manually, requiring one operator per shift to operate the uncoiling trolley. Uncoiling one coil requires operating four buttons and completing four steps: raising, moving forward, lowering, and reversing the trolley. Simultaneously, multiple steel coils need to be laid flat at the fixed stack, with adjacent finished coils aligned and close together to facilitate a single hoisting into the warehouse by the crane.

[0003] However, when manually operating the unloading trolley, the trolley's operation is entirely controlled by the operator. If the trolley stops too early, there will be gaps between the coils placed on the fixed stack. When the gap between two coils is large, the overhead crane needs to use an electric disk to align the coils when lifting them from the fixed stack, or lift them off the fixed stack and slide them on the ground to make the coils fit together end to end. During the secondary alignment process, there will be friction between the coils and the ground, as well as friction and impact between the coils and the overhead crane's electric disk, resulting in severe scratches on the surface of the coils and affecting the surface quality of the wire. Utility Model Content

[0004] The purpose of this invention is to provide an automatic wire unwinding control system. By setting a laser rangefinder on the track of the unwinding trolley, the position of the unwinding trolley on the track is detected in real time, thereby accurately controlling the stopping position of the unwinding trolley to eliminate the gap between steel coils on the fixed stack.

[0005] The present invention adopts the following technical solution: An automatic wire unwinding control system includes an unwinding trolley and a track for the unwinding trolley to move back and forth, with a fixed stacking position provided at the first end near the track. The fixed stacking position includes a platform that is set parallel to the track and located on both sides of the track, with a passage in the middle of the platform for the top of the unloading trolley to pass through; The first end of the fixed stack position is flush with the first end of the track; A laser rangefinder is also installed at the first end of the track, and the laser rangefinder is electrically connected to the PLC control system; The laser rangefinder is used to detect the distance between itself and the unloading trolley in order to determine the real-time position of the unloading trolley on the track.

[0006] Furthermore, the unloading trolley includes a trolley pallet, a lifting control component is provided at the bottom of the trolley pallet, a fixed plate is provided at the bottom of the lifting control component, a number of wheels are provided at the bottom of the fixed plate, and a drive control component is provided on the rotation axle of the wheels. Both the lifting control component and the drive control component are electrically connected to the PLC control system.

[0007] Furthermore, a first photoelectric switch is provided on the top of the fixing plate; The first photoelectric switch is electrically connected to the PLC control system and is used to detect the height of the trolley tray as it rises and falls.

[0008] Furthermore, the second end of the track is the unwinding position, and a photoelectric switch is installed on one side of the unwinding position; The photoelectric switch is electrically connected to the PLC control system and is used to detect whether there is a steel coil on the C-hook in the unloading position.

[0009] Furthermore, a second photoelectric switch is also installed on one side of the unloading position; The second photoelectric switch is electrically connected to the PLC control system and is used to detect whether the steel coil on the C-hook is standard.

[0010] Furthermore, a third photoelectric switch is installed on one side of the fixed stack position; The third photoelectric switch is electrically connected to the PLC control system and is used to detect whether there are steel coils at the fixed stack position.

[0011] The beneficial effects of this utility model are: This utility model uses a laser rangefinder to detect the position of the unloading trolley in real time and transmits the data to the PLC control system, avoiding the problem of stopping too early or too late due to manual operation, directly eliminating the large gap between steel coils, so that the overhead crane does not need to perform steel coil alignment operation during the hoisting and storage process, thus improving work efficiency and product stability. Attached Figure Description

[0012] Figure 1 This is a diagram showing the overall system structure of this utility model; Figure 2 This is a schematic diagram of the structure of the unloading trolley in this utility model; Figure 3 This is a flowchart illustrating the working principle of this utility model; Among them, 1. Unloading trolley, 1-1. Trolley pallet, 1-2. Lifting control component, 1-3. Fixing plate, 1-4. Wheels, 1-5. Drive control component, 1-6. First photoelectric switch, 2. Track, 3. Fixed stacking position, 4. Laser rangefinder, 5. Unloading position, 6. Through-beam switch, 7. Second photoelectric switch, 8. Third photoelectric switch, 9. Steel coil. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and working principle.

[0014] An automatic wire unwinding control system, such as Figure 1 As shown, it includes an unloading trolley 1 and a track 2 for the unloading trolley 1 to move back and forth. A fixed stacking position 3 is provided at the first end near the track 2. The fixed stacking position 3 includes a platform that is parallel to the track 2 and located on both sides of the track 2, and the middle of the platform has a passage for the top of the unloading trolley 1 to pass through; The first end of the fixed stack position 3 is flush with the first end of the track 2; A laser rangefinder 4 is also installed at the first end of track 2, and the laser rangefinder 4 is electrically connected to the PLC control system. The laser rangefinder 4 is used to detect the distance between itself and the unloading trolley 1 in order to determine the real-time position of the unloading trolley 1 on the track 2.

[0015] In this invention, a laser rangefinder 4 is used to detect the position of the unloading trolley 1 in real time and is linked with the PLC control system, thereby achieving automated and precise control of the unloading trolley 1. Compared with manual operation, this effectively avoids the problem of excessive gaps between steel coils caused by deviations in the parking position, ensuring that the steel coils are stacked compactly and neatly on the fixed stacking position 3. At the same time, it reduces the intensity of manual labor, reduces human error, and ensures the stability and efficiency of the unloading process.

[0016] The second end of track 2 is the unwinding position 5, and a photoelectric switch 6 is installed on one side of the unwinding position 5; The photoelectric switch 6 is electrically connected to the PLC control system and is used to detect whether there is a steel coil on the C-hook in the unloading position 5.

[0017] In this invention, the photoelectric switch 6 is integrated with a PLC control system to detect whether there is a steel coil on the C-hook at the unloading position. When a steel coil is detected, the PLC control system automatically starts, and the unloading trolley 1 performs a coil-receiving action; when there is no steel coil, the unloading trolley 1 pauses or waits, avoiding the unloading trolley 1 running idle or malfunctioning, improving the system's automation response capability, reducing ineffective operation time, and improving overall unloading efficiency.

[0018] A second photoelectric switch 7 is installed on one side of the unloading position 5; The second photoelectric switch 7 is electrically connected to the PLC control system and is used to detect whether the steel coil on the C-hook is standard.

[0019] The second photoelectric switch 7 can be a distance measuring sensor.

[0020] A standard steel coil is one that is a complete cylindrical or near-cylindrical shape, without any collapsed or flattened coils, with its outer diameter and width (height) within the preset acceptable range, and that sits stably and upright in the center of the C-hook.

[0021] In this invention, the second photoelectric switch 7 pairs detects whether the steel coils on the C-shaped hooks are standard. This allows for the screening of unqualified steel coils at the initial stage of unloading, preventing them from entering the subsequent stacking process. This not only ensures the consistency of steel coils on fixed stacks, reducing problems such as unstable stacking and wasted space caused by unqualified steel coils, but also lowers the additional costs of subsequent handling of unqualified steel coils and improves the level of production quality control.

[0022] A third photoelectric switch 8 is installed on one side of the fixed stack position 3; The third photoelectric switch 8 is electrically connected to the PLC control system and is used to detect whether there are steel coils on the fixed stack position 3.

[0023] In this invention, the third photoelectric switch 8 detects whether there are steel coils on the fixed stack position 3, providing real-time feedback on the status of the fixed stack position 3 to the PLC control system. When a steel coil is detected, it confirms that the unloading trolley 1 has completed one unloading action, triggering subsequent instructions such as the return trip of the unloading trolley 1; at the same time, it can help determine whether the fixed stack position 3 is full, providing a start signal for subsequent processes such as overhead crane hoisting into the warehouse, ensuring the orderly management of the fixed stack position 3 and avoiding the safety risks caused by over-stacking of steel coils.

[0024] like Figure 2 As shown, the unloading trolley 1 includes a trolley pallet 1-1, a lifting control component 1-2 is provided at the bottom of the trolley pallet 1-1, a fixing plate 1-3 is provided at the bottom of the lifting control component 1-2, a number of wheels 1-4 are provided at the bottom of the fixing plate 1-3, and a drive control component 1-5 is provided on the rotation shaft of the wheels 1-4. Both the lifting control component 1-2 and the drive control component 1-5 are electrically connected to the PLC control system. A first photoelectric switch 1-6 is provided on the top of the fixing plate 1-3; The first photoelectric switch 1-6 is electrically connected to the PLC control system and is used to detect the height of the trolley tray 1-1 as it rises and falls.

[0025] This utility model achieves automated and coordinated control of the lifting of the trolley pallet 1-1 and the operation of the trolley by setting up a lifting control component 1-2 and a drive control component 1-5 on the unloading trolley 1 and electrically connecting them with the PLC control system. This further improves the automation level and operational accuracy of the unloading process and avoids the inefficiency and safety hazards that may be caused by manual operation.

[0026] In this invention, a first photoelectric switch 1-6 provides precise detection of the lifting position of the trolley pallet 1-1. Through linkage with the PLC control system, it can provide real-time feedback on whether the trolley pallet 1-1 has risen to its highest or fallen to its lowest position, ensuring accurate positioning of the trolley pallet 1-1 during steel coil loading and unloading. This avoids problems such as steel coil collisions and loading / unloading failures caused by excessive or insufficient lifting of the trolley pallet 1-1, improving the safety and reliability of steel coil loading and unloading. Simultaneously, it provides precise status judgment for the automated command execution of the PLC control system.

[0027] The working principle of this utility model is as follows: Figure 3 As shown, it includes the following steps: S110, the unloading trolley 1 moves to the unloading position 5, and the C-hook moves above the unloading position 5.

[0028] S120, the photoelectric switch 6 detects whether there is a steel coil on the C-hook. If there is a steel coil, the second photoelectric switch 7 detects whether the steel coil on the C-hook is standard. If the steel coil is standard, the PLC control system controls the trolley tray 1-1 to rise through the lifting control component 1-2. When the first photoelectric switch 1-6 detects that the trolley tray 1-1 has risen to the highest position, the C-hook falls until the steel coil is placed on the trolley tray 1-1.

[0029] In this invention, a photoelectric switch 6 detects whether there is a steel coil on the C-hook before unloading. After the photoelectric switch 6 detects a steel coil, a second photoelectric switch 7 is added to detect whether the steel coil is standard. Only standard steel coils enter the coiling process, strengthening the quality screening before unloading. This avoids unqualified steel coils occupying the resources of the unloading trolley 1 and the fixed stacking position 3, reduces the extra steps of sorting unqualified steel coils in the later stage, improves the system's ability to control production quality, and ensures the high efficiency of unloading and stacking qualified steel coils.

[0030] S130, the unloading trolley 1 carries the nth steel coil and runs on the track 2 from the unloading position 5 to the fixed stacking position 3; where n is an integer greater than 0.

[0031] S140, the laser rangefinder 4 detects the distance between the unloading trolley 1 and the first end of the fixed stack 3 in real time. When the distance between the unloading trolley 1 and the first end of the fixed stack 3 is detected to be (n-1)k, the PLC control system controls the unloading trolley 1 to stop through the drive control component 1-5, and controls the trolley pallet 1-1 to descend through the lifting control component 1-2, so that the nth steel coil is placed on the fixed stack 3; where k is the length of the steel coil, and k is greater than 0.

[0032] The length of a steel coil refers to the distance between the centers of the two circular end faces of the coil.

[0033] S150, when the third photoelectric switch 8 detects that there is a steel coil on the fixed stack position 3, and the first photoelectric switch 1-6 detects that the trolley pallet 1-1 has descended to the lowest position, the PLC control system controls the unloading trolley 1 to return to the unloading position 5 through the drive control component 1-5.

[0034] This invention uses a laser rangefinder 4 to monitor distance in real time and, combined with the steel coil length parameter, precisely controls the stopping position of the unloading trolley 1, ensuring that the nth steel coil is tightly fitted with the preceding steel coil, completely solving the problem of gaps between steel coils caused by manual operation. Simultaneously, the return trip of the unloading trolley 1 is triggered by the status feedback of the third photoelectric switch 8 and the first photoelectric switches 1-6, forming a complete automated unloading cycle. This improves the standardization and efficiency of the unloading process, reduces errors caused by manual intervention, and ensures the consistency of steel coil stacking quality. S160, when the third photoelectric switch 8 detects that the steel coils on the fixed stack position 3 are full, it sends a signal to the PLC control system, and the PLC control system sends a steel coil hoisting and warehousing instruction.

[0035] In this invention, when the third photoelectric switch 8 detects that the steel coils on the fixed stack 3 are full, the system automatically instructs the overhead crane to hoist them into the warehouse, realizing fully automated connection of the entire process from unloading and stacking to warehousing. This avoids unloading interruptions or over-stacking caused by untimely manual judgment of the stack status, reduces waiting time between processes, improves the continuity of overall production logistics, reduces manual scheduling costs, and improves warehouse turnover efficiency.

[0036] In summary, this utility model, through the linkage of detection elements such as laser rangefinder 4, first photoelectric switches 1-6, second photoelectric switch 7, third photoelectric switch 8, and through-beam switch 6 with the PLC control system, combined with the drive and lifting control of the uncoiling trolley 1, constructs a fully automated closed-loop uncoiling process for wire rod from steel coil detection, acceptance, transportation, stacking to warehousing. This effectively solves problems such as large gaps and positional deviations in steel coil stacking caused by manual operation, significantly improves uncoiling accuracy, efficiency, and production safety, reduces human intervention and operational errors, and realizes intelligent and efficient operation of the wire rod uncoiling process.

Claims

1. An automatic wire unwinding control system, characterized in that, It includes an unloading trolley (1) and a track (2) for the unloading trolley (1) to run back and forth, and a fixed stacking position (3) is provided at the first end near the track (2). The fixed stacking position (3) includes a platform arranged parallel to the track (2) and located on both sides of the track (2), and the middle of the platform has a passage for the top of the unloading trolley (1) to pass through; The first end of the fixed stack position (3) is flush with the first end of the track (2); A laser rangefinder (4) is also provided at the first end of the track (2), and the laser rangefinder (4) is electrically connected to the PLC control system. The laser rangefinder (4) is used to detect the distance between itself and the unloading trolley (1) in order to determine the real-time position of the unloading trolley (1) on the track (2).

2. The automatic wire unwinding control system according to claim 1, characterized in that, The unloading trolley (1) includes a trolley tray (1-1), a lifting control component (1-2) is provided at the bottom of the trolley tray (1-1), a fixing plate (1-3) is provided at the bottom of the lifting control component (1-2), a plurality of wheels (1-4) are provided at the bottom of the fixing plate (1-3), and a drive control component (1-5) is provided on the rotation shaft of the wheels (1-4). The lifting control component (1-2) and the drive control component (1-5) are both electrically connected to the PLC control system.

3. The automatic wire unwinding control system according to claim 2, characterized in that, A first photoelectric switch (1-6) is provided on the top of the fixing plate (1-3). The first photoelectric switch (1-6) is electrically connected to the PLC control system and is used to detect the height of the trolley tray (1-1) as it rises and falls.

4. The automatic wire unwinding control system according to claim 3, characterized in that, The second end of the track (2) is the unwinding position (5), and a photoelectric switch (6) is provided on one side of the unwinding position (5). The photoelectric switch (6) is electrically connected to the PLC control system and is used to detect whether there is a steel coil on the C-hook in the unloading position (5).

5. The automatic wire unwinding control system according to claim 4, characterized in that, A second photoelectric switch (7) is also provided on one side of the unloading position (5); The second photoelectric switch (7) is electrically connected to the PLC control system and is used to detect whether the steel coil on the C-hook is standard.

6. The automatic wire unwinding control system according to claim 5, characterized in that, A third photoelectric switch (8) is provided on one side of the fixed stack position (3). The third photoelectric switch (8) is electrically connected to the PLC control system and is used to detect whether there is a steel coil on the fixed stack position (3).

Images