Automatic feeding control system for steel coil uncoiling

Abstract

An automatic feeding control system for steel coil uncoiling comprises a storage seat, a feeding trolley and an uncoiling machine which are sequentially arranged, and a lifting frame is arranged on the feeding trolley; a steel coil distance laser range finder, a steel coil outer diameter laser range finder, an encoder and an original point position detection switch are mounted on the uncoiling machine; a descending position detection switch is arranged on the feeding trolley; a material correlation photoelectric switch, a material storage stop detection switch, a steel coil inner diameter correlation photoelectric switch, a material storage speed reduction position detection switch, a steel coil position confirmation correlation photoelectric switch, an uncoiling speed reduction position detection switch and an uncoiling stop position detection switch are sequentially arranged in the direction from the material storage seat to the uncoiling machine. The problems existing in an existing uncoiling feeding mode are solved, the whole process does not need participation of personnel, the influence of dust and noise on the body health of operators is effectively reduced, and the threat to life safety in the feeding process is thoroughly eradicated; each link is detected and confirmed, and the whole feeding process is accurate and rapid.

Description

Technical Field

[0001] The utility model relates to a control system for conveying steel coils to an uncoiler during the process of uncoiling and leveling the steel coils, and belongs to the technical field of steel coil uncoiling. Background Art

[0002] The steel coil needs to be unrolled and leveled by an uncoiler to become a usable sheet (called uncoiler). The steel coil is hoisted onto the storage seat, and the lifting frame on the loading car lifts the steel coil on the storage seat. The loading car then transports the steel coil to the uncoiler. The uncoiler moves so that its main shaft drum extends into the inner hole of the steel coil. The main shaft drum expands to support the steel coil, completing the loading and then the uncoiler operation. For thicker and heavier steel coils, the tension is greater during uncoiling. A low-power, single-cantilever uncoiler cannot achieve the power required for the steel coil. At this time, two uncoilers are often required to uncoil the steel coil at the same time. After the main shaft drums of the two uncoilers are aligned, the main shaft drums expand, and the steel coil is tightened on the main shaft drums of the two uncoilers.

[0003] In the traditional model, from the hoisting of the steel coil to the storage seat to the uncoiler to complete the tensioning and centering, every link requires the participation of on-site operators to operate, confirm the position, and come into close contact with the steel coil; there is a risk of the steel coil falling or tipping over during the hoisting and moving process, which seriously threatens the life safety of the operators; and there is a large amount of oxide scale on the surface of the steel coil, which will generate a large amount of dust during each process. Operators will inhale a large amount of dust during close operation, posing a great threat to their health; the large amount of dust and the noise generated during the process will have a great impact on the entire operation process, and the operating experience is poor; and each operation process requires manual or visual confirmation by personnel. The whole process is long and inaccurate, and may require repeated adjustments later, which is very time-consuming and increases the energy consumption of the equipment. At the end of the material, if the operator is not careful and the speed is too fast, it will generate a lot of noise and dust, making the environment very harsh. Summary of the Invention

[0004] The utility model aims at the deficiencies of the existing feeding technology when unwinding steel coils and provides a high-efficiency, energy-saving and safe automatic feeding control system for unwinding steel coils, which can complete the automatic feeding of steel coils by pressing a button once.

[0005] The utility model adopts the following technical solutions for the automatic control system of steel coil uncoiling:

[0006] The system includes a material storage seat, a feeding car and an uncoiler arranged in sequence, and the feeding car is equipped with a lifting frame; the uncoiler is equipped with a steel coil distance laser rangefinder, a steel coil outer diameter laser rangefinder, an encoder and an origin position detection switch; the feeding car is provided with a descending position detection switch; along the direction from the material storage seat to the uncoiler, a material shooting photoelectric switch, a material storage stop detection switch, a steel coil inner diameter shooting photoelectric switch, a material storage speed reduction position detection switch, a steel coil position confirmation shooting photoelectric switch, an uncoiler speed reduction position detection switch and an uncoiler stop position detection switch are arranged in sequence.

[0007] There are two symmetrical uncoilers, and the loading car is located between the two uncoilers.

[0008] The steel coil inner diameter photoelectric switch is provided with two groups, upper and lower, which respectively detect the positions of the upper and lower ends of the steel coil when it is raised. The steel coil is in place when the two groups of photoelectric switches cannot detect the steel coil at the same time.

[0009] The steel coil position confirmation photoelectric switch is provided with two groups, front and rear, for detecting the positions of the two sides of the steel coil respectively.

[0010] The coil distance laser rangefinder is used to confirm the distance between the coil and the uncoiler's main shaft drum. The coil outer diameter laser rangefinder is used to measure the coil's outer diameter. The encoder is used to detect the uncoiler's travel distance. The origin position detection switch is used to detect whether the uncoiler has returned to its origin position. The descent position detection switch is used to detect whether the loading trolley's lifting frame has descended to its lowest position. The material presence photoelectric switch is used to detect whether there is material (coil) on the storage base. The storage deceleration position detection switch is used to detect whether the loading trolley has reached the pre-deceleration position when moving toward the storage base. The storage stop detection switch is used to detect whether the loading trolley has reached the stop position when moving toward the storage base. The uncoiling deceleration position detection switch is used to detect whether the loading trolley has reached the pre-deceleration position when moving toward the uncoiler. The uncoiling stop position detection switch is used to detect whether the loading trolley has reached the stop position when moving toward the uncoiler.

[0011] The coil is placed on the accumulator. The photoelectric switch for detecting the presence of a coil detects a signal, confirming the presence of a coil on the accumulator. Two sets of photoelectric switches for confirming the coil's position ensure that both sides of the coil are properly positioned on the loading cart. The uncoiler moves backward until the origin position detection switch detects a signal. When the accumulator's lifting frame reaches its lowest point, the descent position detection switch detects a signal, and the accumulator moves at full speed from the uncoiler to the accumulator. When the accumulator's deceleration position detection switch detects a signal, the accumulator slows down and moves slowly. When the accumulator's stop detection switch detects a signal, the accumulator stops. The accumulator's lifting frame lifts the coil and ascends. When the coil's inner diameter photoelectric switch detects no coil, the accumulator stops ascending and moves the coil toward the uncoiler. The uncoiler's deceleration position detection switch detects a signal, and the accumulator slows down and moves slowly. The accumulator stops when the accumulator's stop position detection switch detects a signal. A coil outer diameter laser rangefinder measures the coil's outer diameter, confirming the coil's center height relative to the center of the uncoiler's main shaft drum for fine-tuning. A coil distance laser rangefinder measures the distance from the uncoiler to the coil. An encoder calculates the distance the uncoiler has moved, confirming each uncoiler has moved into position and that the uncoiler's main shaft drum is supporting the coil's inner hole. The loading car's lift frame descends, and the descent position detection switch detects a signal and stops.

[0012] The utility model systematically solves many problems existing in the existing unwinding and loading methods. From hoisting to completion, the entire process does not require human participation, effectively reducing the impact of dust and noise on the health of operators and completely eliminating the threat to life safety during the loading process. Each link is detected and confirmed, and the entire loading process is accurate and fast, saving time, improving efficiency, increasing output value without changing the equipment, and reducing unnecessary energy consumption. The entire process only requires one-click operation from a distance, and the operator is far away from the place during the entire process, so that other work can be carried out simultaneously with the loading work, further improving efficiency and greatly improving the operator experience. The tail of the material is actively decelerated, which greatly reduces noise and dust, and the entire environment is also greatly improved. The entire unwinding production line is made safer, healthier, more environmentally friendly, accurate, fast, and energy-saving, greatly improving production efficiency, increasing production capacity, saving labor costs, and improving operator experience, which has a very significant improvement on the entire production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the structural principle of the automatic control system for uncoiling steel coils.

[0014] Figure 2 yes Figure 1 Left view of .

[0015] Figure 3 yes Figure 1 Top view of .

[0016] Among them: 1. Steel coil distance laser rangefinder, 2. Steel coil outer diameter laser rangefinder, 3. Encoder, 4. Storage base, 5. Double uncoiler, 6. Steel coil, 7. Uncoil stop position detection switch, 8. Uncoil speed reduction position detection switch, 9. Storage speed reduction position detection switch, 10. Origin position detection switch, 11. Steel coil inner diameter photoelectric switch, 12. Storage stop detection switch, 13. Steel coil position confirmation photoelectric switch, 14. Loading car, 15. Lowering position detection switch, 16. Material presence photoelectric switch. DETAILED DESCRIPTION

[0017] The automatic control system for unwinding a steel coil of the present invention is used to place the steel coil 6 on the storage seat 4 onto the main shaft drum of the unwinder 5. The present invention is described in detail below with reference to the accompanying drawings.

[0018] like Figure 1 、 Figure 2 and Figure 3 As shown, the automatic feeding control system for uncoiling steel coils of the present invention involves equipment including a storage seat 4, a feeding car 14 and an uncoiler 5. Two uncoilers 5 are symmetrically arranged to support the steel coil 6 and provide driving force for the movement and rotation of the steel coil 6. When the steel coil 6 reaches the position of the uncoiler 5 (the inner hole of the steel coil 6 coincides with the axis of the main shaft drum of the uncoiler 5), the two uncoilers 5 move at the same time, and their main shaft drums extend into the inner hole of the steel coil 6, so that the steel coil 6 is supported on the main shaft drums of the two uncoilers 5. The feeding car 14 is placed between the two uncoilers 5 and runs along the conveyor track. The feeding car 14 is equipped with a V-shaped lifting frame, and the steel coil 6 is positioned in the V-shaped lifting frame and can be lifted up and down. The storage seat 4 is placed at one end of the conveyor track for storing the steel coil 6.

[0019] See also Figure 1 The uncoiler 5 is equipped with a steel coil distance laser rangefinder 1, a steel coil outer diameter laser rangefinder 2, an encoder 3 and an origin position detection switch 10. The steel coil distance laser rangefinder 1 is used to confirm the distance between the steel coil 6 and the main shaft drum of the uncoiler 5. The steel coil outer diameter laser rangefinder 2 is used to measure the outer diameter of the steel coil 6, and detect the diameter of the steel coil 6 in real time during operation. When the diameter of the steel coil 5 is too small, the entire uncoiler line will slow down to avoid a large impact on the tail of the material due to excessive speed, reduce noise and dust, and protect the equipment from damage due to impact. The encoder 3 is used to detect the moving distance of the uncoiler 5. The origin position detection switch 10 is used to detect whether the uncoiler 5 has retreated to the origin position. When the origin position is detected, a signal is sent, the uncoiler 5 confirms the zero position, and the encoder 3 data is cleared to ensure that the starting point of each alignment is accurate to avoid cumulative deviations.

[0020] See also Figure 2 The loading car 14 is provided with a descending position detection switch 15 for detecting whether the V-shaped lifting frame of the loading car 14 has descended to the lowest position.

[0021] See also Figure 3 Along the outer side of the conveyor track of the loading car 14, from the storage base 4 to the uncoiler 5, there are arranged in sequence a material-presence photoelectric switch 16, a storage stop detection switch 12, a coil inner diameter-presence photoelectric switch 11, a storage speed reduction position detection switch 9, a coil position confirmation photoelectric switch 13, an uncoiling speed reduction position detection switch 8, and a stop position detection switch 7. The material-presence photoelectric switch 16 is used to detect whether there is material (steel coil 6) on the storage base 4. When material is detected, a signal is issued, and the V-type lifting frame of the loading car 14 rises to lift the steel coil 6 on the storage base 4. The steel coil inner diameter photoelectric switch 11 is provided in two groups, upper and lower, for detecting whether the steel coil 6 rises to the coil diameter position (the height position of the inner hole of the steel coil 6 and the main shaft drum of the uncoiler 5) when the V-shaped lifting frame of the feeding car 14 is raised. The two groups of photoelectric switches respectively detect the position of the upper and lower ends of the steel coil when it is raised. When the steel coil 6 is not detected at the same time, it means that the steel coil is in place, and a signal is sent, and the feeding car 14 starts and moves toward the uncoiler 5. The steel coil position confirmation photoelectric switch 13 has two groups, front and back, for confirming the position of both sides of the steel coil 6. When the steel coil 6 is not detected at the same time, it means that the steel coil is in place. The storage deceleration position detection switch 9 is used to detect whether the feeding car 14 reaches the advance deceleration position when it moves toward the storage seat 4. If the feeding car 14 moves to this position, the storage deceleration position detection switch 9 will detect it and send a signal to control the feeding car 14 to slow down. The storage stop detection switch 12 is used to detect whether the loading car 14 reaches the stop position when moving toward the storage seat 4. If the loading car 14 moves to this position, the storage stop detection switch 12 will detect it and send a signal to control the loading car 14 to stop running. The unwinding speed reduction position detection switch 8 is used to detect whether the loading car 14 reaches the advance speed reduction position when moving toward the uncoiler 5. If the loading car 14 moves to this position, the unwinding speed reduction position detection switch 8 will detect it and send a signal to control the loading car 14 to slow down. The unwinding stop position detection switch 7 is used to detect whether the loading car 14 reaches the stop position when moving toward the uncoiler 5. If the loading car 14 moves to this position, the unwinding stop position detection switch 7 will detect it and send a signal to control the loading car 14 to stop running.

[0022] The operation process of the above system is as follows.

[0023] The initial state is: the previous steel coil 6 has been unwound, the loading car 14 is located at the uncoiler 5, away from the storage seat 4; the two uncoilers 5 are away from the origin position, and the opening (the distance between the main shaft drums of the two uncoilers 5) is minimum.

[0024] The steel coil 6 is placed on the stocker 4. The photoelectric switch 16 detects a signal, confirming the presence of the steel coil 6 on the stocker 4. Two sets of photoelectric switches 13 for confirming the position of the steel coil 6 respectively detect both sides of the steel coil 6 on the stocker 4. If no steel coil 6 is detected, it indicates that the steel coil is in place. This process ensures that the steel coil 6 is in the proper position when it is lifted by the V-shaped lifting frame of the loading car 14. This ensures that the loading car 14 will not interfere with the uncoilers 5 when the openings of the two uncoilers 5 are fully opened during the movement of the steel coil 6.

[0025] The two uncoilers 5 move toward the rear origin position until the origin position detection switch 10 detects a signal, indicating that the openings of the two uncoilers 5 have been opened to the maximum and the main shaft drum of the uncoiler 5 has been retracted to the minimum.

[0026] The V-shaped lifting frame of the loading car 14 falls to the lowest point, and the descending position detection switch 15 detects a signal, indicating that the V-shaped lifting frame of the loading car 14 has fallen to the lowest point, ensuring that the loading car 14 will not interfere with the lowest point of the steel coil 6 during movement; the loading car 14 moves at full speed from the uncoiler 5 to the storage seat 4, and when the storage deceleration position detection switch 9 detects a signal, the loading car 14 slows down and moves slowly to ensure that the loading car 14 can stop steadily when it stops, and when the storage stop detection switch 12 detects a signal, the loading car 14 stops moving, and at this time the loading car 14 is at the storage seat 4.

[0027] The V-shaped lifting frame of the loading trolley 14 lifts the steel coil 6 upward. When both the upper and lower sets of coil inner diameter photoelectric switches 11 detect no steel coil, indicating that the center of the inner hole of the steel coil 6 is aligned with the center of the main shaft drum of the uncoiler 5, the V-shaped lifting frame of the loading trolley 14 stops rising, and the loading trolley 14 moves toward the uncoiler 5, carrying the steel coil 6. The unwinding deceleration position detection switch 8 detects a signal, causing the loading trolley 14 to slow down and move slowly, ensuring that it stops firmly. When the unwinding stop position detection switch 7 detects a signal, the loading trolley 14 stops moving.

[0028] The coil outer diameter laser rangefinder 2 measures the outer diameter of coil 6 and compares it with the input information to further confirm the position difference between the center height of coil 6 and the center of the main shaft drum of uncoiler 5, and perform fine adjustments. Based on the width information, the coil distance laser rangefinder 1 on each side of the uncoiler 5 measures the distance from the coil to the coil 6, confirms the position of the coil 6, and calculates the distance that each uncoiler 5 should travel. Based on the calculated distance, the uncoiler 5 is controlled to move forward. The encoder 3 calculates the distance moved by each uncoiler, confirms that each uncoiler 5 is in place, and inserts the main shaft drum of the uncoiler 5 into the inner hole of the coil 6. The main shaft drum expands and supports the inner hole of the coil 6.

[0029] The V-shaped lifting frame of the loading car 14 descends, and when the descending position detection switch 15 detects a signal, it means that the V-shaped lifting frame of the loading car 14 has fallen to the lowest point, ensuring that when the uncoiler 5 drives the steel coil 6 to move, the lowest point of the steel coil 6 will not interfere with the loading car 14 during the movement.

[0030] The two uncoilers 5 simultaneously drive the steel coil 6 to move according to the calculated position, so that the center line of the steel coil width direction coincides with the center line of the equipment (the entire steel coil uncoiler production line), completing the automatic loading work.

[0031] The utility model provides an automatic control system for unwinding and loading steel coils, which can automatically complete the entire loading process by pressing a button only once.

Claims

1. An automatic feeding control system for uncoiling a steel coil, comprising a storage base, a feeding trolley, and an uncoiler arranged in sequence, wherein the feeding trolley is provided with a lifting frame; the characteristics thereof are: The uncoiler is equipped with a steel coil distance laser rangefinder, a steel coil outer diameter laser rangefinder, an encoder and an origin position detection switch; the loading car is provided with a descending position detection switch; along the direction from the storage seat to the uncoiler, there are arranged in sequence a material shooting photoelectric switch, a storage stop detection switch, a steel coil inner diameter shooting photoelectric switch, a storage speed reduction position detection switch, a steel coil position confirmation shooting photoelectric switch, an unwinding speed reduction position detection switch and an unwinding stop position detection switch.

2. The automatic control system for uncoiling steel coils according to claim 1, characterized in that: There are two symmetrical uncoilers, and the loading car is located between the two uncoilers.

3. The automatic control system for uncoiling steel coils according to claim 1, characterized in that: The steel coil inner diameter photoelectric switch is provided with two groups, upper and lower, for respectively detecting the positions of the upper and lower ends of the steel coil when it is raised.

4. The automatic control system for uncoiling steel coils according to claim 1, characterized in that: The steel coil position confirmation photoelectric switch is provided with two groups, front and rear, for detecting the positions of the two sides of the steel coil respectively.

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