Dual detection device and method for strip threading position

Abstract

The application provides a double detection device and method for strip steel passing position, which comprises a first uncoiler, a second uncoiler, a first steel punching and cutting machine, a second steel punching and cutting machine, a first conveying channel and a second conveying channel; the first uncoiler, the first steel punching and cutting machine and the first conveying channel are sequentially arranged; the second uncoiler, the second steel punching and cutting machine and the second conveying channel are sequentially arranged; the second uncoiler and the second steel punching and cutting machine are arranged above the first uncoiler and the first steel punching and cutting machine through a support table; the second conveying channel is arranged on one side of the first conveying channel, a material storage vehicle is arranged on the other side of the first conveying channel, and a steel material suction device is arranged above the material storage vehicle. The application has the beneficial effects that if the unrolled section is not put into the material storage vehicle, the strip head can be normally operated to the connection position, the problem that the unrolled section is forgotten to be put into the material storage vehicle by an operator is solved, the unrolled section is prevented from being rolled into the production line, and the accidents caused by the problem are effectively prevented.

Description

Technical Field

[0001] This invention belongs to the field of steel strip rolling technology, and in particular relates to a dual detection device and method for the strip threading position. Background Technology

[0002] In the finished product of the rolling mill, there are unrolled strip sections. These unrolled sections need to be cut off at a length of 7.5 meters and then lifted onto a storage car using a suction cup. However, in actual production, the operators forgot to put the unrolled sections onto the storage car. Since the existing equipment lacks a protective interlock for this type of accident, when the strip head reaches the connection point, the unrolled sections come into contact with the running strip, causing them to be carried to the welding machine and degreasing area, resulting in a shutdown accident. Summary of the Invention

[0003] In view of this, the present invention aims to propose a dual detection device and method for the strip threading position, so as to solve the problem of unrolled section coming into contact with running strip and causing the unrolled section to be carried to the welding machine and degreasing area, resulting in shutdown accidents.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] The dual detection device for the strip threading position includes a first uncoiler, a second uncoiler, a first punching and cutting machine, a second punching and cutting machine, a first conveying channel, and a second conveying channel;

[0006] The first uncoiler, the first stamping and cutting machine, and the first conveyor are arranged in sequence;

[0007] The second uncoiler, the second stamping and cutting machine, and the second conveyor channel are arranged in sequence; the second uncoiler and the second stamping and cutting machine are set above the first uncoiler and the first stamping and cutting machine via support platforms;

[0008] The second conveying channel is located on one side of the first conveying channel, and a storage cart is located on the other side of the first conveying channel. A steel adsorption device is located above the storage cart. A first photoelectric switch is located on the first conveying channel, and a second photoelectric switch is located on the second conveying channel.

[0009] Furthermore, the first and second photoelectric switches are connected to a controller, which employs existing PLC technology. The controller is electrically connected to the first uncoiler, the first punching and cutting machine, the second uncoiler, and the second punching and cutting machine, respectively.

[0010] Furthermore, the steel adsorption device includes a support column assembly, a horizontal slide groove, a first connecting plate, and a sliding adsorption assembly. The horizontal slide groove is disposed on the support column assembly, the first connecting plate is disposed on the horizontal slide groove, and the sliding adsorption assembly is disposed on the first connecting plate.

[0011] The support column assembly includes a first support column and a second support column, which are disposed on both sides of the storage trolley. A first connecting plate is disposed on one side of the first and second support columns. Two horizontal sliding grooves are respectively disposed at the upper ends of the first and second support columns. A rotating motor is provided at the end of the first support column, and the output end of the rotating motor is connected to a rotating screw. The rotating screw is disposed in the horizontal sliding groove. A first guide rod is disposed in the other horizontal sliding groove. A first sliding block corresponding to the rotating screw and a second sliding block corresponding to the first guide rod are respectively disposed at both ends of the first connecting plate.

[0012] Furthermore, the sliding adsorption assembly includes a vertical sliding rod, a pushing cylinder, and a U-shaped adsorption plate. The vertical sliding rod is located below the first connecting plate, and the inner sides of the two vertical sliding rods are provided with vertical sliding grooves. The upper inner sides of the two vertical sliding rods are each provided with a pushing cylinder.

[0013] The output end of the push cylinder is connected to the end of the U-shaped adsorption plate. A second guide rod is provided in the vertical groove, and the two sides of the U-shaped adsorption plate are slidably mounted on the second guide rod.

[0014] The vertical sliding rod has a support plate on its side, which does not affect the movement trajectory of the sliding adsorption component.

[0015] Furthermore, the U-shaped adsorption plate includes side plates and a bottom adsorption plate, with the two side plates hinged above the bottom adsorption plate;

[0016] The bottom of the bottom adsorption plate is equipped with several evenly arranged and distributed adsorption cups. An air compressor is installed on the bottom adsorption plate, and the air compressor is connected to the adsorption cups through an air pipe.

[0017] The distance between the cutting position of the first punching steel cutter and the first photoelectric switch is 13.2 meters, and the distance between the cutting position of the second punching steel cutter and the second photoelectric switch is 20.3 meters.

[0018] The dual detection method for the strip threading position includes the following steps: When the first photoelectric switch or the second photoelectric switch detects the strip, the first or second conveyor channel stops moving, the first uncoiler and the first or second punching and cutting machine stop working, the rotating motor is turned on, the first connecting plate moves along the first slide groove, so that the sliding adsorption assembly is placed directly above the first or second conveyor channel, the sliding adsorption assembly moves the U-shaped adsorption plate downward through the pushing cylinders on both sides, at this time the adsorption suction cup adsorbs the steel plate, the pushing cylinder drives the U-shaped adsorption plate to move upward, the rotating motor reverses, so that the first connecting plate moves to one side of the storage car, the sliding adsorption assembly moves the U-shaped adsorption plate downward through the pushing cylinders on both sides, at this time the adsorption suction cup stops adsorbing the steel plate;

[0019] If the current channel is not operating normally, the photoelectric sensor will be blocked, triggering a head-mounted quick stop. All variable frequency motors in the cold line inlet section will stop running until the operator checks and resets them.

[0020] The first uncoiler and the second uncoiler are started at the same time. The length of the first uncoiler is shorter than that of the second uncoiler. Therefore, the first photoelectric switch and the second photoelectric switch will not detect the steel strip at the same time.

[0021] Furthermore, an icon is added to the control panel of the controller. In normal state, it is solid green. When the photoelectric detector detects an unrolled section and it is not placed into the storage car after a certain period of time, an alarm is triggered and the color flashes. After the operator resets the device in the alarm state, it becomes solid green.

[0022] Compared with the prior art, the dual detection device and method for the strip threading position described in this invention has the following advantages:

[0023] This device utilizes the detection of unrolled steel strips not yet placed in the storage cart. A first or second photoelectric switch detects this and, via a controller, manages the first uncoiler, the first punching and cutting machine, the second uncoiler, the second punching and cutting machine, and the steel adsorption device. If unrolled steel strips are not in the storage cart, a quick stop is triggered to alert the operator when the strip head reaches the connection point. If no unrolled steel strips are in the storage cart, the strip head continues operating normally to the connection point. This effectively prevents accidents caused by operators forgetting to place unrolled steel strips in the storage cart and resulting in them being pulled into the production line. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 This is an overall schematic diagram of the dual detection device for the strip threading position described in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the steel adsorption device of the dual detection device for the strip threading position described in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. First uncoiler; 2. Second uncoiler; 3. First punching and cutting machine; 4. Second punching and cutting machine; 5. First conveyor channel; 6. Second conveyor channel; 7. Storage trolley; 8. First photoelectric switch; 9. Second photoelectric switch; 10. Horizontal chute; 11. First support column; 12. Second support column; 13. Rotating screw; 14. First guide rod; 15. First sliding block; 16. Second sliding block; 17. Vertical sliding rod; 18. Push cylinder; 19. Side plate; 20. Bottom suction plate; 21. Air compressor; 22. Adsorption suction cup; 23. Rotating motor; 24. Support plate. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 2As shown, the dual detection device for the strip threading position includes a first uncoiler 1, a second uncoiler 2, a first stamping and cutting machine 3, a second stamping and cutting machine 4, a first conveyor channel 5, and a second conveyor channel 6; the first uncoiler 1, the first stamping and cutting machine 3, and the first conveyor channel are arranged in sequence; the second uncoiler 2, the second stamping and cutting machine 4, and the second conveyor channel 6 are arranged in sequence; the second uncoiler 2 and the second stamping and cutting machine are set above the first uncoiler 1 and the first stamping and cutting machine 3 via support platforms; the second conveyor channel 6 is set on one side of the first conveyor channel 5, and a storage cart 7 is set on the other side of the first conveyor channel 5. A steel adsorption device is set above the storage cart 7. A first photoelectric switch 8 is set on the first conveyor channel 5, and a second photoelectric switch 9 is set on the second conveyor channel. A conveyor belt is provided between the first uncoiler (1) and the first stamping and cutting machine (3), and a conveyor belt is provided between the first uncoiler (1) and the first stamping and cutting machine (3).

[0034] The first photoelectric switch 8 and the second photoelectric switch 9 are connected to the controller, which uses existing PLC technology. The controller is electrically connected to the first uncoiler 1, the first punching and cutting machine 3, the second uncoiler 2, and the second punching and cutting machine 4, respectively.

[0035] The steel adsorption device includes a support column assembly, a horizontal chute 10, a first connecting plate, and a sliding adsorption assembly. The horizontal chute 10 is mounted on the support column assembly, the first connecting plate is mounted on the horizontal chute 10, and the sliding adsorption assembly is mounted on the first connecting plate. The support column assembly includes a first support column 11 and a second support column 12, which are mounted on both sides of the storage cart 7. The first connecting plate is mounted on one side of the first support column 11 and the second support column 12. The two horizontal chute 10s are respectively mounted on the upper ends of the first support column 11 and the second support column 12. A rotating motor 23 is provided at the end of the first support column 11, and the output end of the rotating motor 23 is connected to a rotating screw 13. The rotating screw 13 is mounted inside the horizontal chute 10. A first guide rod 14 is provided inside the other horizontal chute 10. The two ends of the first connecting plate are respectively provided with a first sliding block 15 corresponding to the rotating screw 13 and a second sliding block 16 corresponding to the first guide rod 14.

[0036] The sliding adsorption assembly includes vertical sliding rods 17, pushing cylinders 18, and a U-shaped adsorption plate. The vertical sliding rods 17 are located below the first connecting plate. Vertical grooves are provided on the inner sides of the two vertical sliding rods 17, and pushing cylinders 18 are provided on the inner upper ends of both vertical sliding rods 17. The output end of the pushing cylinder 18 is connected to the end of the U-shaped adsorption plate. A second guide rod is provided within the vertical groove, and the two sides of the U-shaped adsorption plate are slidably mounted on the second guide rod. Support plates 24 are provided on the sides of the vertical sliding rods 17, and the support plates 24 do not affect the movement trajectory of the sliding adsorption assembly. The U-shaped adsorption plate includes side plates 19 and a bottom adsorption plate 20. The two side plates 19 are hinged above the bottom adsorption plate 20. The bottom of the bottom adsorption plate 20 has several evenly distributed adsorption cups 22, and an air compressor 21 is mounted on the bottom adsorption plate 20. The air compressor 21 is connected to the adsorption cups 22 via air pipes. The distance between the cutting position of the first punching steel cutter and the first photoelectric switch 8 is 13.2 meters, and the distance between the cutting position of the second punching steel cutter and the second photoelectric switch 9 is 20.3 meters.

[0037] In a specific embodiment, the second conveying channel 6 is inclined. According to the inclination angle of the second conveying channel 6, the two pushing cylinders 18 are controlled to drive the side plate 19 to move. The side plate 19 is hinged to the bottom adsorption plate 20, so it can be adapted to different angles.

[0038] The dual detection method for the strip threading position includes the following steps: When the first photoelectric switch 8 or the second photoelectric switch 9 detects the steel strip, the first conveying channel 5 or the second conveying channel 6 stops moving, the first uncoiler 1 and the first punching and cutting machine 3 or the second uncoiler 2 and the second punching and cutting machine 4 stop working, the rotating motor 23 is turned on, the first connecting plate moves along the first slide groove, so that the sliding adsorption component is placed directly above the first conveying channel 5 or the second conveying channel 6, the sliding adsorption component moves the U-shaped adsorption plate downward through the pushing cylinders 18 on both sides, at this time the adsorption suction cup 22 adsorbs the steel plate, the pushing cylinder 18 drives the U-shaped adsorption plate to move upward, the rotating motor 23 reverses, so that the first connecting plate moves to one side of the storage car 7, the sliding adsorption component moves the U-shaped adsorption plate downward through the pushing cylinders 18 on both sides, at this time the adsorption suction cup 22 stops adsorbing the steel plate;

[0039] If the current conveyor is not operating normally, the photoelectric sensor will be blocked, triggering a head-end quick stop. All variable frequency motors in the cold line inlet section will stop running until the operator checks and resets them.

[0040] The first uncoiler 1 and the second uncoiler 2 start simultaneously. The length of the first uncoiler 1 is shorter than the length of the second uncoiler 2, therefore the first photoelectric switch 8 and the second photoelectric switch 9 will not detect the steel strip simultaneously. An icon is added to the controller's control panel. Under normal conditions, it is solid green. When the photoelectric detector detects an unrolled strip and it is not placed into the storage car 7 within a certain period of time, an alarm is triggered, and the color flashes. After the operator resets the device under alarm conditions, it returns to solid green.

[0041] The first photoelectric switch 8 and the second photoelectric switch 9 are connected via an ABB DI810 input module. When a photoelectric switch is blocked, the signal fed back to the PLC is 0; conversely, the signal fed back to the PLC is 1. At this point, the PLC can determine whether any unrolled segments have not been placed into the storage car 7.

[0042] When an unrolled section is detected not being placed into the storage car, signal 7 is inverted (NOT) and ORed with the current normally operating channel (OR) and connected to pin S of the RS trigger (i.e., activating the RS trigger). Pin Q of the RS trigger is connected to the fast stop signal (interlock), used to trigger a fast stop to stop the cold line entrance section (i.e., stop the lead-in to the preparation section and the normally operating channel). The RS trigger's R contact is connected to a reset button, which is reset by the operator after inspection.

[0043] If the current channel is not operating normally, the photoelectric sensor will be blocked, triggering a head-mounted quick stop. All variable frequency motors in the cold line inlet section will stop running until the operator checks and resets them.

[0044] 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 dual detection device for the strip threading position, characterized in that: It includes a first uncoiler (1), a second uncoiler (2), a first stamping steel cutting machine (3), a second stamping steel cutting machine (4), a first conveyor channel (5), and a second conveyor channel (6); The first uncoiler (1), the first stamping and cutting machine (3), and the first conveyor (5) are arranged in sequence; The second uncoiler (2), the second stamping and cutting machine (4), and the second conveying channel (6) are arranged in sequence; the second uncoiler (2) and the second stamping and cutting machine (4) are set above the first uncoiler (1) and the first stamping and cutting machine (3) via a support platform; The second conveying channel (6) is located on one side of the first conveying channel (5), and a storage cart (7) is located on the other side of the first conveying channel (5). A steel adsorption device is located above the storage cart (7). A first photoelectric switch (8) is located on the first conveying channel (5), and a second photoelectric switch (9) is located on the second conveying channel (6). The distance between the cutting position of the first punching steel cutting machine (3) and the first photoelectric switch (8) is 13.2 meters, and the distance between the cutting position of the second punching steel cutting machine (4) and the second photoelectric switch (9) is 20.3 meters; The first photoelectric switch (8) and the second photoelectric switch (9) are connected to the controller, and the controller is electrically connected to the first uncoiler (1), the first punching and cutting machine (3), the second uncoiler (2), and the second punching and cutting machine (4), respectively.

2. The dual detection device for the strip threading position according to claim 1, characterized in that: The steel adsorption device includes a support column assembly, a horizontal slide (10), a first connecting plate, and a sliding adsorption assembly. The horizontal slide (10) is disposed on the support column assembly, the first connecting plate is disposed on the horizontal slide (10), and the sliding adsorption assembly is disposed on the first connecting plate.

3. The dual detection device for the strip threading position according to claim 1, characterized in that: The support column assembly includes a first support column (11) and a second support column (12). The first support column (11) and the second support column (12) are arranged on both sides of the storage cart (7). A first connecting plate is arranged on one side of the first support column (11) and the second support column (12). Two horizontal slides (10) are respectively arranged at the upper ends of the first support column (11) and the second support column (12). A rotating motor (23) is provided at the end of the first support column (11). The output end of the rotating motor (23) is connected to a rotating screw (13). The rotating screw (13) is arranged in the horizontal slide (10). A first guide rod (14) is provided in the other horizontal slide (10). The two ends of the first connecting plate are respectively provided with a first sliding block (15) corresponding to the rotating screw (13) and a second sliding block (16) corresponding to the first guide rod (14).

4. The dual detection device for the strip threading position according to claim 2, characterized in that: The sliding adsorption assembly includes a vertical sliding rod (17), a pushing cylinder (18), and a U-shaped adsorption plate. The vertical sliding rod (17) is located below the first connecting plate. The inner sides of the two vertical sliding rods (17) are provided with vertical sliding grooves, and the inner sides of the upper ends of the two vertical sliding rods (17) are provided with pushing cylinders (18). The output end of the push cylinder (18) is connected to the end of the U-shaped adsorption plate. A second guide rod is provided in the vertical groove, and the two sides of the U-shaped adsorption plate are slidably arranged on the second guide rod.

5. The dual detection device for the strip threading position according to claim 4, characterized in that: The U-shaped adsorption plate includes a side plate (19) and a bottom adsorption plate (20), with the two side plates (19) hinged above the bottom adsorption plate (20); The bottom of the bottom adsorption plate (20) is provided with several evenly arranged adsorption suction cups (22), and the bottom adsorption plate (20) is provided with an air compressor (21), which is connected to the adsorption suction cups (22) through an air pipe.

6. A method using the dual detection device for strip threading position according to any one of claims 1-5, characterized in that: The process includes the following steps: When the first photoelectric switch (8) or the second photoelectric switch (9) detects the steel strip, the first conveying channel (5) or the second conveying channel (6) stops moving, the first uncoiler (1), the first punching and cutting machine (3) or the second uncoiler (2), the second punching and cutting machine (4) stops working, the rotating motor (23) is turned on, the first connecting plate moves along the first slide groove, so that the sliding adsorption assembly is placed directly above the first conveying channel (5) or the second conveying channel (6), the sliding adsorption assembly moves the U-shaped adsorption plate downward through the pushing cylinders (18) on both sides, at this time the adsorption suction cup (22) adsorbs the steel plate, the pushing cylinder (18) drives the U-shaped adsorption plate upward, the rotating motor (23) reverses, so that the first connecting plate moves to one side of the storage car (7), the sliding adsorption assembly moves the U-shaped adsorption plate downward through the pushing cylinders (18) on both sides, at this time the adsorption suction cup (22) stops adsorbing the steel plate.

7. The method of the dual detection device for strip threading position according to claim 6, characterized in that: An icon is added to the control panel of the controller. The normal state is solid green. When the first photoelectric switch (8) or the second photoelectric switch (9) detects an unrolled section and it is not put into the storage car (7) after a period of time, an alarm is issued and the icon flashes. After the operator resets the device in the alarm state, the icon turns solid green.

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