Numerical control hydraulic plate rolling machine and using method thereof

Abstract

The invention discloses a numerical control hydraulic veneer reeling machine and a using method thereof, and relates to the technical field of veneer reeling machines, the numerical control hydraulic veneer reeling machine comprises a veneer reeling machine base, a speed reducer base is fixedly installed at the top of the veneer reeling machine base, a speed reducer gear is arranged in the speed reducer base, and an input shaft is rotationally connected into the speed reducer gear; the outer portion of the speed reducer gear is connected with a set of connecting gears in a meshed mode, the interiors of the connecting gears are fixedly connected with rotating rollers, a set of first supporting frames are fixedly installed on the top of the plate rolling machine base, a connecting frame is fixedly connected to the upper portions of the first supporting frames through bolts, and a hydraulic machine is arranged in the connecting frame. The high-pressure water spraying gun is arranged, high-pressure strong spraying is conducted on a burr area on the surface of a metal plate, burrs on the surface of the metal plate are preliminarily removed, the rolling power of the metal plate is adjusted in real time, and the rolling quality of the metal plate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plate rolling machines, and in particular to a numerically controlled hydraulic plate rolling machine and a use method thereof. Background Art

[0002] The hydraulic plate rolling machine is a shaping machine that performs continuous point bending on sheet materials. The upper roller is in the center of the lower roller, and the hydraulic oil in the hydraulic cylinder acts on the piston to make vertical lifting movements. The lower roller is driven to rotate through the final gear of the main reducer to provide torque for the rolled sheet. The flat plastic metal plate of the plate rolling machine passes between the working rollers of the plate rolling machine. With the help of the downward pressure of the upper roller and the rotation of the lower roller, the metal plate undergoes multiple continuous bendings to produce permanent plastic deformation and is rolled into the required cylinder, cone or part of them. The existing rolled plates are rolled on the cut metal plates. Some metal plates are prone to warping at the edges after cutting. Directly rolling them will affect the quality of the rolled products.

[0003] The fully hydraulic four-roller CNC plate rolling machine with the existing patent number CN105195565A includes a machine body, in which a four-roller synchronous rolling and pressing mechanism, a side automatic feeding mechanism, a unloading mechanism and an electrical system are arranged. The four-roller synchronous rolling and pressing mechanism includes an upper roller device, a lower roller device, and left and right side roller devices. The side automatic feeding mechanism is arranged on the side of the four-roller synchronous rolling and pressing mechanism. The beneficial effects of the present invention are that the plate rolling machine has high sensitivity, strong stability, and a pre-bending function. The connection tightness of all roller ends is high, and the gap deviation after long-term use is eliminated. The remaining straight edge can be reduced, and the material can be loaded and unloaded automatically, and the synchronization between the rollers is high.

[0004] However, in actual use, when some metal plates with curled edges after cutting are directly rolled, the rolling quality of the metal plates will be affected, resulting in poor rolling effects and waste of metal plates. Therefore, it is necessary to design a CNC hydraulic plate rolling machine and its use method. Summary of the invention

[0005] The object of the present invention is to provide a numerically controlled hydraulic plate rolling machine and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a CNC hydraulic plate rolling machine, comprising a plate rolling machine base; A reducer base, wherein the reducer base is fixedly mounted on the top of the plate rolling machine base, a reducer gear is arranged inside the reducer base, an input shaft is rotatably connected inside the reducer gear, a group of connecting gears are meshedly connected outside the reducer gear, and a rotating roller is fixedly connected inside the connecting gear; A group of first support frames, wherein the first support frames are fixedly mounted on the top of the plate rolling machine base, a connecting frame is fixedly connected with bolts on the top of the first support frames, a hydraulic press is arranged inside the connecting frame, and an upper roller is arranged below the hydraulic press; A conveying seat, the conveying seat is arranged at the rear side of the plate rolling machine base, a conveying frame is arranged above the conveying seat, the conveying frame is in an arc shape, a conveying groove is arranged inside the conveying frame, and a plurality of friction blocks are arranged on both sides of the inner wall of the conveying groove; A connecting plate, wherein the connecting plate is fixedly installed between the first supporting frames, a first linear motor is fixedly installed at the bottom of the connecting plate, a first moving frame is slidably connected to the outside of the first linear motor, and a burr detector is fixedly installed at the bottom of the first moving frame; A second linear motor, wherein the second linear motor is fixedly mounted on the top of the connecting plate, the top of the second linear motor is slidably connected to a second moving frame, the top of the second moving frame is fixedly connected to a second supporting frame, a second electrically-controlled telescopic rod is fixedly mounted on the bottom of the top plate of the second supporting frame, and a fan is fixedly connected to the top of the extended end of the second electrically-controlled telescopic rod; A high-pressure water spray gun is located below the rotating roller and the upper roller.

[0007] According to the above technical solution, the upper part of the reducer is connected to the upper part of the reducer gear, and the other end of the input shaft is fixedly connected to the driving motor.

[0008] According to the above technical solution, a fixing frame is fixedly connected to the bottom of the hydraulic press, and the interior of the fixing frame is fixedly connected to the upper roller.

[0009] According to the above technical solution, a group of first fixed blocks are fixedly installed on the side walls of the conveying seat, the top of the first fixed block is fixedly connected to the first electrically controlled telescopic rod, and the top of the extended end of the first electrically controlled telescopic rod is fixedly connected to the conveying frame.

[0010] According to the above technical solution, a third linear motor is also fixedly installed between the first support frames, and the bottom of the third linear motor is connected to the top of the plate rolling machine base.

[0011] According to the above technical solution, the top of the third linear motor is slidably connected to the third moving frame, the top of the third moving frame is fixedly connected to the fourth linear motor, and the top of the fourth linear motor is slidably connected to the fourth moving frame.

[0012] According to the above technical solution, a third electrically-controlled telescopic rod is fixedly installed on the top of the fourth movable frame, and a high-pressure water spray gun is fixedly connected to the top of the extended end of the third electrically-controlled telescopic rod.

[0013] According to the above technical solution, the method for using the CNC hydraulic plate rolling machine includes the following steps: S1, conveying metal plates, transporting the same batch of metal plates on the conveying frame through the conveying trough to between the upper roller and the rotating roller; S2, cleaning the metal plate, and starting the fan to remove the dust attached to the surface of the metal plate for a second time; S3, inspect the surface of the metal plate, start the burr detector to inspect the burrs on the surface of the metal plate after rolling, and determine whether the metal plate meets the requirements of rolling; S4. Removing burrs from the surface of the metal plate. The burrs on the surface of the metal plate are removed in different ways according to the burr content on the surface of the metal plate.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a conveying frame and a conveying trough, can pre-bend the metal plate before rolling, effectively improving the rolling effect of the metal plate; before the metal plate is rolled, a burr detector is used to analyze the proportion of burrs on the surface of the metal plate, and whether the metal plate meets the requirements of rolling is judged according to the analysis result to avoid wasting the metal plate; a high-pressure water spray gun is used to perform high-pressure and powerful spraying on the burr area on the surface of the metal plate to preliminarily remove the burrs on the surface of the metal plate; the rolling power of the metal plate is adjusted in real time to improve the rolling quality of the metal plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 It is a schematic diagram of the enlarged structure of area A of the present invention; Figure 3 It is a schematic diagram of the overall back structure of the present invention; Figure 4 is a schematic diagram of the structure of a third linear motor of the present invention; In the figure: 1. Plate rolling machine base; 2. Reducer base; 3. Reducer upper part; 4. Driving motor; 41. Input shaft; 5. Connecting gear; 6. Rotating roller; 7. First support frame; 8. Connecting frame; 9. Hydraulic press; 10. Fixed frame; 11. Upper roller; 12. Conveying seat; 13. First fixed block; 14. First electrically controlled telescopic rod; 15. Conveying frame; 16. Friction block; 17. Connecting plate; 18. First linear motor; 19. First moving frame; 20. Burr detector; 21. Second linear motor; 22. Second moving frame; 23. Second supporting frame; 24. Second electrically controlled telescopic rod; 25. Fan; 26. Third linear motor; 27. Third moving frame; 28. Fourth linear motor; 29. ​​Fourth moving frame; 30. Third electrically controlled telescopic rod; 31. High-pressure water spray gun. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-4 The present invention provides a technical solution: a CNC hydraulic plate rolling machine, comprising a plate rolling machine base 1, a reducer base 2 is fixedly installed on the top of the plate rolling machine base 1; A reducer gear is provided inside the reducer base 2, and a reducer upper part 3 is connected above the reducer gear. An input shaft 41 is rotatably connected inside the reducer gear. A driving motor 4 is fixedly connected to the other end of the input shaft 41. The driving motor 4 is externally connected to a power source. The power source starts the driving motor 4 to drive the input shaft 41 to rotate together with the reducer gear. A group of connecting gears 5 are meshedly connected to the outside of the reducer gear. A rotating roller 6 is fixedly connected inside the connecting gear 5. The connecting gear 5 rotates together with the reducer gear, driving the rotating roller 6 to rotate together. The outer rotation of the rotating roller 6 is connected with a group of first support frames 7, which are fixedly installed on the top of the plate rolling machine base 1. The upper bolts of the first support frame 7 are fixedly connected with a connecting frame 8. A hydraulic press 9 is arranged inside the connecting frame 8. The hydraulic press 9 uses the incompressibility and conveying force of the liquid to realize force amplification or change of direction. The hydraulic press 9 uses special hydraulic oil as the working medium and the hydraulic pump as the power source. The force of the hydraulic pump makes the hydraulic oil enter the cylinder or piston through the hydraulic pipeline to realize the up and down movement of the piston. The hydraulic pump is externally connected to the power supply, and the power supply starts the hydraulic pump to drive the piston to perform vertical lifting movement. The bottom of the hydraulic press 9 is fixedly connected with a fixed frame 10, and the interior of the fixed frame 10 is fixedly connected with an upper roller 11. The fixed frame 10 and the upper roller 11 are lifted and lowered together with the hydraulic press 9; A conveying seat 12 is provided on the rear side of the rolling machine base 1, and a group of first fixed blocks 13 are fixedly installed on the side walls of the conveying seat 12. A first electrically-controlled telescopic rod 14 is fixedly connected to the top of the first fixed block 13. The first electrically-controlled telescopic rod 14 is externally connected to a power supply. The power supply starts the first electrically-controlled telescopic rod 14 to retract up and down. A conveying frame 15 is fixedly connected to the top of the extended end of the first electrically-controlled telescopic rod 14. The conveying frame 15 is in an arc shape. The conveying frame 15 plays a role of pre-bending. A conveying trough is provided inside the conveying frame 15. The conveying trough is used to convey metal plates. A number of friction blocks 16 are provided on both sides of the inner wall of the conveying trough. The friction blocks 16 are used to perform preliminary friction on the surface of the metal plate.

[0018] Specifically, the operator places one end of the metal plate inside the conveying trough, and the friction blocks on both sides of the inner wall of the conveying trough preliminarily clean the dust adhered to the surface of the metal plate. The metal plate is transported along the conveying direction of the conveying trough to between the rotating roller 6 and the upper roller 11, and the hydraulic press 9 is started to drive the upper roller 11 to move the metal plate downward. At the same time, the drive motor 4 is started to drive the input shaft 41 to rotate together with the connecting gear 5, and the rotating roller 6 rotates accordingly to press and roll the metal plate.

[0019] Furthermore, a connecting plate 17 is fixedly installed between the first support frames 7, a first linear motor 18 is fixedly installed on the bottom of the connecting plate 17, the first linear motor 18 is externally slidably connected to a first movable frame 19, the first linear motor 18 is externally connected to a power supply, and the power supply starts the first linear motor 18 to drive the first movable frame 19 to move left and right, and a burr detector 20 is fixedly installed on the bottom of the first movable frame 19. The burr detector 20 uses a high-resolution industrial camera and image processing algorithms, and the visual inspection equipment can accurately detect and identify tiny burrs. The burr detector 20 is used to detect burr areas on the surface of the metal plate.

[0020] A second linear motor 21 is fixedly installed on the top of the connecting plate 17, and a second moving frame 22 is slidably connected to the top of the second linear motor 21. The second linear motor 21 is externally connected to a power source, and the power source starts the second linear motor 21 to control the second moving frame 22 to move left and right. A second support frame 23 is fixedly connected to the top of the second moving frame 22, and a second electrically-controlled telescopic rod 24 is fixedly installed on the bottom of the top plate of the second support frame 23. The second electrically-controlled telescopic rod 24 is externally connected to a power source, and the power source starts to control the second electrically-controlled telescopic rod 24 to retract up and down. A fan 25 is fixedly connected to the top of the extended end of the second electrically-controlled telescopic rod 24. The fan 25 is driven by an electric motor to rotate the fan blades, thereby accelerating air circulation. The fan 25 rotates when the fan 25 is powered on, and the fan 25 is used to clean the surface of the metal plate; A third linear motor 26 is also fixedly installed between the first support frames 7, the bottom of the third linear motor 26 is connected to the top of the plate rolling machine base 1, the top of the third linear motor 26 is slidably connected to the third moving frame 27, the third linear motor 26 is externally connected to a power supply, and the power supply starts the third linear motor 26 to drive the third moving frame 27 to slide left and right, the top of the third moving frame 27 is fixedly connected to a fourth linear motor 28, and the top of the fourth linear motor 28 is slidably connected to a fourth moving frame 29, the fourth linear motor 28 is externally connected to a power supply, and the power supply starts the fourth linear motor 28 to drive the fourth moving frame 29 to slide back and forth, A third electrically-controlled telescopic rod 30 is fixedly installed on the top of the fourth mobile frame 29. The third electrically-controlled telescopic rod 20 is externally connected to a power supply. The power supply is started to control the third electrically-controlled telescopic rod 20 to extend and retract. A high-pressure water spray gun 21 is fixedly connected to the top of the extended end of the third electrically-controlled telescopic rod 20. The high-pressure water spray gun 21 uses a power device to enable a high-pressure plunger pump to generate high-pressure water to wash the surface of an object. The impact force of the water is greater than the adhesion force between the dirt and the surface of the object. The high-pressure water will peel off the dirt and wash it away, thereby achieving the effect of cleaning the surface of the object. The high-pressure water spray gun 21 is used to flush the metal plate, and the burrs on the metal plate are instantly and forcefully removed by the water gun.

[0021] In this embodiment, a method for using a CNC hydraulic plate rolling machine includes the following steps: S1, conveying metal plates, transporting the same batch of metal plates on the conveying frame 12 through the conveying trough to between the upper roller 11 and the rotating roller 6; S2, cleaning the metal plate, starting the fan 25 to remove the dust attached to the surface of the metal plate for a second time; S3, inspecting the surface of the metal plate, starting the burr detector 20 to inspect the burrs on the surface of the rolled metal plate, and judging whether the metal plate meets the requirements of rolling; S4. Removing burrs from the surface of the metal plate. The burrs on the surface of the metal plate are removed in different ways according to the burr content on the surface of the metal plate.

[0022] In the above S2, after one end of the metal plate is placed inside the conveying trough, the operator controls the other end of the metal plate to convey the metal plate, and the friction block inside the conveying trough preliminarily removes the dust attached to the surface of the metal plate. When the metal plate is transported along the curved direction of the conveying trough to between the upper roller 11 and the rotating roller 6, the fan 25 is started to remove dust from the surface of the metal plate for a second time. Specifically, when the other end of the metal plate is located between the upper roller 11 and the rotating roller 6, the fan 25 is started to blow air to the upper surface of the metal plate, and at the same time, the second linear motor 21 is started to control the second movable frame 22 and the fan 25 to move from left to right above the metal plate, so as to remove the dust attached to the surface of the metal plate for the second time, thereby ensuring that the dust on the surface of the metal plate is fully cleaned.

[0023] In the above S3, before the metal plate is rolled, the burr detector 20 is started to detect the surface of the metal plate, and the metal plate is rolled according to the detection result. When the burr area detected by the burr detector 20 accounts for 10% of the total area of ​​the metal plate surface, it indicates that the surface of the metal plate is smooth and meets the requirements of rolling. At this time, the drive motor 4 is started to drive the input shaft 41 to rotate together with the rotating roller 6. At this time, the power of the drive motor 4 is controlled to be P, and the hydraulic press 9 is started to control the upper roller 11 to drive the metal plate to press down. The metal plate rotates with the rotating roller 6 and is rolled into shape; When the burr detector 20 detects that the burr area on the metal plate surface accounts for 10%-20% of the total area of ​​the metal plate surface, it indicates that the surface of the metal plate is slightly rough, and the burrs on the metal plate surface need to be removed to reduce the burr content on the metal plate surface; When the burr detector 20 detects that the burr area on the metal plate surface accounts for more than 20% of the total metal plate surface area, it indicates that the metal plate has too many surface burrs and does not meet the requirements for metal plate rolling. At this time, the metal plate is removed and the cutting of the metal plate is checked to avoid wasting the metal plate.

[0024] In the above S4, when the burr area on the surface of the metal plate accounts for 10%-15% of the total surface area of ​​the metal plate, the high-pressure water spray gun 31 is started to remove the burrs on the surface of the metal plate. The power of the high-pressure water spray gun 31 is set to W at this time. The high-pressure water spray gun 31 sprays the burr area on the surface of the metal plate with a strong instantaneous force of the water gun to improve the rolling quality of the metal plate. At this time, the power of the driving motor 4 is controlled to be 1.5P, and the metal plate is rolled quickly to reduce the probability of burrs generated after the metal plate is rolled; When the burr area on the metal plate surface accounts for 10%-20% of the total surface area of ​​the metal plate, the power of the high-pressure water spray gun 31 is adjusted to 2W, and the area with large burr area on the metal plate surface is sprayed to remove the burrs on the metal plate surface. At the same time, the power of the drive motor 4 is adjusted to 2P to improve the rolling effect of the metal plate.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A CNC hydraulic plate rolling machine, characterized in that: include: Plate rolling machine base (1); A reducer base (2), the reducer base (2) being fixedly mounted on the top of the plate rolling machine base (1), a reducer gear being provided inside the reducer base (2), the inside of the reducer gear being rotatably connected to an input shaft (41), the outside of the reducer gear being meshingly connected to a group of connecting gears (5), the inside of the connecting gear (5) being fixedly connected to a rotating roller (6); A group of first support frames (7), wherein the first support frames (7) are fixedly mounted on the top of the plate rolling machine base (1), a connecting frame (8) is fixedly connected to the top of the first support frames (7) by bolts, a hydraulic press (9) is provided inside the connecting frame (8), and an upper roller (11) is provided below the hydraulic press (9); A conveying seat (12), the conveying seat (12) being arranged at the rear side of the plate rolling machine base (1), a conveying frame (15) being arranged above the conveying seat (12), the conveying frame (15) being in an arc shape, a conveying groove being arranged inside the conveying frame (15), and a plurality of friction blocks (16) being arranged on both sides of the inner wall of the conveying groove; A connecting plate (17), the connecting plate (17) being fixedly mounted between the first support frames (7), a first linear motor (18) being fixedly mounted on the bottom of the connecting plate (17), a first moving frame (19) being slidably connected to the outside of the first linear motor (18), and a burr detector (20) being fixedly mounted on the bottom of the first moving frame (19); a second linear motor (21), the second linear motor (21) being fixedly mounted on the top of the connecting plate (17), the top of the second linear motor (21) being slidably connected to a second moving frame (22), the top of the second moving frame (22) being fixedly connected to a second supporting frame (23), a second electrically controlled telescopic rod (24) being fixedly mounted on the bottom of the top plate of the second supporting frame (23), and a fan (25) being fixedly connected to the top of the extended end of the second electrically controlled telescopic rod (24); A high-pressure water spray gun (21), wherein the high-pressure water spray gun (21) is located below the rotating roller (6) and the upper roller (11).

2. A CNC hydraulic plate rolling machine according to claim 1, characterized in that: The upper part of the reducer (3) is connected to the upper part of the reducer gear, and the other end of the input shaft (41) is fixedly connected to the driving motor (4).

3. A CNC hydraulic plate rolling machine according to claim 2, characterized in that: A fixing frame (10) is fixedly connected to the bottom of the hydraulic press (9), and an upper roller (11) is fixedly connected to the interior of the fixing frame (10).

4. A CNC hydraulic plate rolling machine according to claim 3, characterized in that: A group of first fixing blocks (13) are fixedly mounted on the side walls of both sides of the conveying seat (12); the top of the first fixing block (13) is fixedly connected to a first electrically controlled telescopic rod (14); and the top of the extended end of the first electrically controlled telescopic rod (14) is fixedly connected to a conveying frame (15).

5. A CNC hydraulic plate rolling machine according to claim 4, characterized in that: A third linear motor (26) is also fixedly mounted between the first support frames (7), and the bottom of the third linear motor (26) is connected to the top of the plate rolling machine base (1).

6. A CNC hydraulic plate rolling machine according to claim 5, characterized in that: The top of the third linear motor (26) is slidably connected to a third moving frame (27), the top of the third moving frame (27) is fixedly connected to a fourth linear motor (28), and the top of the fourth linear motor (28) is slidably connected to a fourth moving frame (29).

7. A CNC hydraulic plate rolling machine according to claim 6, characterized in that: A third electrically-controlled telescopic rod (30) is fixedly mounted on the top of the fourth movable frame (29), and a high-pressure water spray gun (21) is fixedly connected to the top of the extended end of the third electrically-controlled telescopic rod (20).

8. The method for using a CNC hydraulic plate rolling machine according to claim 7, characterized in that: The following steps are involved: S1, conveying metal plates, conveying the same batch of metal plates on a conveying frame (12) through a conveying trough to between an upper roller (11) and a rotating roller (6); S2, cleaning the metal plate, starting the fan (25) to remove dust attached to the surface of the metal plate for a second time; S3, inspecting the surface of the metal plate, starting the burr detector (20) to inspect the burrs on the surface of the rolled metal plate, and determining whether the metal plate meets the requirements for rolling; S4. Removing burrs from the surface of the metal plate. The burrs on the surface of the metal plate are removed in different ways according to the burr content on the surface of the metal plate.

9. The method for using a CNC hydraulic plate rolling machine according to claim 8, characterized in that: The specific operation steps of the above S3 are as follows: Before the metal plate is rolled, the burr detector (20) is started to detect the surface of the metal plate, and the metal plate is rolled according to the detection result. When the burr area detected by the burr detector (20) accounts for 10% of the total area of ​​the metal plate surface, it is assumed that the surface of the metal plate is smooth and meets the requirements for rolling. At this time, the drive motor (4) is started to drive the input shaft (41) to rotate together with the rotating roller (6). At this time, the power of the drive motor (4) is controlled to be P, and at the same time, the hydraulic press (9) is started to control the upper roller (11) to drive the metal plate to press downward. The metal plate rotates with the rotating roller (6) and is rolled and formed. When the burr detector (20) detects that the burr area on the surface of the metal plate accounts for 10%-20% of the total surface area of ​​the metal plate, it indicates that the surface of the metal plate is slightly rough, and the burrs on the surface of the metal plate need to be removed to reduce the burr content on the surface of the metal plate; When the burr detector (20) detects that the ratio of the burr area on the surface of the metal plate to the total surface area of ​​the metal plate exceeds 20%, it indicates that the surface burrs of the metal plate are too many and do not meet the requirements for metal plate rolling. In this case, the metal plate is removed and the cutting of the metal plate is checked to avoid wasting the metal plate.

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