A steel strip shearing device with a surface defect detection function

Abstract

The present invention discloses a steel strip shearing device with a surface defect detection function, which relates to the technical field of shearing. A steel strip shearing device with a surface defect detection function, the shearing device includes a feeding mechanism, a pretreatment rack, a conveying mechanism, a workbench and a first conveyor belt. A steel strip is arranged on the feeding mechanism. Compared with the current shearing device, the present invention is provided with a detector, a first shearing component and a second shearing component. The detector is used to detect whether there are defects on the surface of the steel strip. The defective parts on the steel strip can be sheared off at one time by the first shearing component and the second shearing component, thereby avoiding secondary shearing of the steel strip that does not reach a specific length and has surface defects subsequently. The present invention is also provided with a grinding component, which can remove the burrs at the shearing port of the steel strip, avoiding the burrs at the shearing port of the steel strip from scratching the staff when the staff picks up the sheared steel strip subsequently.

Description

Technical Field

[0001] The present invention relates to the technical field of shearing, and specifically to a steel strip shearing device with a surface defect detection function. Background Art

[0002] A steel strip shearing device is a device used to cut continuous steel strips into required lengths, and is commonly used in industries such as metal processing and steel manufacturing. In order to ensure the quality of the cut steel strips, especially without surface defects, some advanced steel strip shearing devices integrate surface defect detection functions.

[0003] The working principles of current steel strip shearing devices can refer to patent documents CN118616789A and CN115846760A, but these devices will encounter the following problems during operation: First, since the positions of the defective areas on the steel strip are uncertain, in order to ensure that the subsequent shearing length of the steel strip meets the standard requirements, when the existing shearing devices process these defective areas, they often cut off the steel strip containing the defective area together with a large piece of steel strip with good surface quality. Finally, in order to reduce costs, the staff often needs to perform secondary shearing on these unqualified steel strips later, thus increasing the difficulty of recycling; Second, the current shearing devices often encounter tool wear during operation, resulting in unqualified edges of the cut steel strips. However, the existing treatment measures usually involve stopping the machine to replace the tools, and it is impossible to replace the tools during non-working hours, thereby affecting the work efficiency; Third, the existing shearing devices can basically only perform leveling and straightening operations on wavy steel strips, but during transportation, packaging, etc., the sides of the steel strips often appear wrinkled and bent. At this time, since the overall steel strip is flat, if forced to level the steel strip by stretching or rolling, there is a high probability of causing deformation of the steel strip. Summary of the Invention

[0004] The purpose of the present invention is to provide a steel strip shearing device with a surface defect detection function to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solution: A steel strip shearing device with a surface defect detection function. The shearing device includes a feeding mechanism, a pretreatment rack, a conveying mechanism, a workbench, and a first conveyor belt. A steel strip is provided on the feeding mechanism. When the present invention is working, one end of the steel strip sequentially passes through the pretreatment rack, the conveying mechanism, and the workbench. Two groups of detectors are arranged inside the pretreatment rack, and the two groups of detectors are oppositely arranged on the upper and lower sides of the steel strip. Whether there are defects such as cracks, depressions, and damages on the surface of the steel strip is detected by the two groups of detectors (the detectors can be selected from existing technologies, such as vision detectors, ultrasonic detectors, etc.). A first shearing table is arranged at one end of the workbench above and close to the conveying mechanism, and a second shearing rack is arranged at the other end of the workbench above and far from the conveying mechanism. The first conveyor belt is arranged below the first shearing table. A support frame is arranged above the first shearing table, and a lifting seat is arranged inside the support frame. A second cylinder is arranged above the support frame, and the lifting seat is controlled to move up and down by the second cylinder. A first shearing component and a second shearing component are arranged inside the lifting seat. The first shearing component is movably installed at one end of the lifting seat inside and close to the conveying mechanism, and the second shearing component is fixedly installed at the other end of the lifting seat inside and far from the conveying mechanism. When the quality of the steel strip is qualified, the first shearing component will work intermittently to shear the steel strip into products of a specific length. Finally, these qualified products will fall onto the first conveyor belt and enter the next process. When the two groups of detectors detect defects on the steel strip, the two groups of detectors will transmit a set of signals to the first shearing component and the second shearing component. Since the positions of the two groups of detectors are fixed, it is ensured that the conveying speed of the conveying mechanism for the steel strip is constant. Then the staff can know the time when the defective part on the steel strip reaches below the first shearing component and the second shearing component. When the head end of the defective part on the steel strip is located below the second shearing component and the tail end of the defective part on the steel strip is located below the first shearing component, the first shearing component and the second shearing component work synchronously, and the defective part on the steel strip is sheared off by the first shearing component and the second shearing component, thereby avoiding secondary shearing of the steel strip that does not reach a specific length and has surface defects subsequently.

[0006] Further, a lead screw assembly, a telescopic tube, a transmission groove and a third cylinder are arranged inside the lifting seat. A piston and hydraulic oil are arranged in the transmission groove. The working end of the third cylinder is connected to the piston. An adjusting motor is arranged on the outer side of the lifting seat. The working end of the adjusting motor is connected to the lead screw assembly. The first shearing assembly includes a first shearing frame, a first mounting plate and a first cutter. The first shearing frame is connected to the working end of the lead screw assembly. A first cavity is arranged inside the first shearing frame. The first cutter is fixedly installed at the lower end of the first mounting plate. The upper end of the first mounting plate is movably installed in the first cavity through a first compression spring. One end of the telescopic tube is communicated with the transmission groove through a first conduit and a first valve. The other end of the telescopic tube is communicated with the first cavity through a second conduit.

[0007] Further, the second shearing assembly includes a second shearing frame, a second mounting plate and a second cutter. The second shearing frame is fixedly installed inside the lifting seat. A second cavity is arranged inside the second shearing frame. The second cutter is fixedly installed at the lower end of the second mounting plate. The upper end of the second mounting plate is movably installed in the second cavity through a second compression spring. The second cavity is communicated with the transmission groove through a third conduit and a second valve. When there are no defects on the surface quality of the steel strip, the first valve is in an open state, while the second valve is in a closed state. At this time, the third cylinder drives the piston to lift, thereby controlling the movement of the first cutter. The steel strip is sheared by the first cutter. When there are defects on the steel strip, and at the same time, the head end of the defective part is located below the second cutter, and the tail end of the defective part on the steel strip is located below the first cutter, both the first valve and the second valve will be in an open state. When the third cylinder drives the piston to move, the first cutter and the second cutter will move synchronously. The defective part on the steel strip is sheared off by the first cutter and the second cutter. Finally, the present invention controls the first shearing frame to move inside the lifting seat through the adjusting motor and the lead screw assembly. Through the above technical solutions, the present invention can adjust the positions of the first cutter and the second cutter in real time according to the width of the defective part on the steel strip, thereby improving the application range of the present invention.

[0008] Furthermore, a first pressing plate is provided below one end of the first shearing frame away from the second shearing frame, and a second pressing plate is provided below one end of the second shearing frame away from the first shearing frame. The distance between the first pressing plate and the first shearing table is less than the distance between the first cutter and the first shearing table, and the distance between the second pressing plate and the second shearing table is less than the distance between the second cutter and the second shearing table. When the present invention shears the steel strip, the second air cylinder will first control the lifting seat to descend until the first pressing plate and the second pressing plate are in contact with the steel strip. At this time, the first cutter and the second cutter are in a non-contact state with the steel strip. The steel strip is pressed tightly by the first pressing plate and the second pressing plate to prevent the steel strip from shaking during shearing. When officially starting to shear the steel strip, it is determined whether to open the second valve according to the surface quality of the steel strip. Finally, through the above technical solution of the present invention, it can be ensured that the second cutter is not in a working state in most cases. Therefore, when the first cutter is worn due to long-term work, the second cutter is still in good condition. At this time, the staff can use the second cutter as the main cutter to shear the steel strip, thus avoiding the trouble of stopping work to replace the shearing cutter during working hours.

[0009] Furthermore, a second linear motor is provided inside the workbench, and the working end of the second linear motor is connected to the first shearing table. Grinding components are provided at one ends of the first shearing table and the second shearing table close to each other. The grinding component includes a groove, a movable seat and an electromagnet. The movable seat is movably installed in the groove through a vibration spring. The electromagnet is fixedly installed at the side end of the groove. A magnetic block is embedded at one end of the movable seat close to the electromagnet. A shearing opening is provided at the upper end of the movable seat, and the upper end of the movable seat is made of abrasive material. The first cutter and the second cutter are respectively aligned with the shearing openings provided at the upper ends of the two groups of movable seats. When the present invention moves the first cutter by adjusting the motor and the lead screw assembly, the second linear motor will synchronously drive the first shearing table to move, so as to ensure that the movable seat in the first shearing table is always aligned with the first cutter. When the first cutter shears the steel strip, the cutting edge of the first cutter falls into the shearing opening provided at the upper end of the movable seat, thereby improving the service life of the first shearing table. Finally, after the steel strip is sheared, the first cutter will leave the steel strip prior to the first pressing plate and the second pressing plate. At this time, the electromagnet in the first shearing table will intermittently generate a magnetic field that repels the movable seat, thereby driving the movable seat in the first shearing table to move, and removing the burrs at the shearing opening of the steel strip through the movable seat, so as to prevent the burrs at the shearing opening of the steel strip from scratching the staff when the staff picks up the sheared steel strip later (when the second cutter is working, the working principle of the grinding component inside the second shearing table is as described above and will not be elaborated here).

[0010] Further, two cleaning components are arranged at one end of the preprocessing rack close to the feeding mechanism. The two cleaning components are oppositely arranged on the upper and lower sides of the steel strip, so as to avoid the influence of impurities during subsequent surface defect detection of the steel strip (the technical effect achieved by the cleaning components is a conventional technical means in the art, and the specific structure will not be described). Two leveling components are arranged at one end of the preprocessing rack close to the conveying mechanism. The two leveling components are oppositely arranged on the upper and lower sides of the steel strip. Each leveling component is movably installed in the preprocessing rack through a first linear motor. The two leveling components are driven by the two first linear motors to move on the upper and lower sides of the steel strip, so as to perform fixed-point leveling on the concave or bent parts of the steel strip.

[0011] Further, the leveling component includes a fixed frame and a correction seat. The fixed frame is fixedly installed at the working end of the first linear motor. The correction seat is arranged on the side of the fixed frame close to the steel strip. A first cylinder is arranged in the fixed frame. The movement of the correction seat is controlled by the first cylinder. A coil is arranged in the correction seat. When the detector in the present invention detects that the side of the steel strip has wrinkles or bends or a certain area in the middle has a depression, the two leveling components are driven by the two first linear motors to move to the corresponding positions, and then the two correction seats are driven by the two first cylinders to squeeze the steel strip. Finally, an alternating current is supplied to the coil, and the alternating magnetic field generated by the coil makes the area to be leveled of the steel strip heat up and soften, so as to perform the leveling work on the thicker steel strip with a smaller acting force, and avoid the wrinkled and bent parts of the steel strip being rolled and deformed by the conveying rollers of the conveying device when the steel strip enters the conveying mechanism.

[0012] Further, the shearing device further includes a second conveyor belt and a third conveyor belt. The second conveyor belt and the third conveyor belt are oppositely arranged on the two lower sides of the first conveyor belt. The second conveyor belt and the third conveyor belt are not on the same side of the workbench as the first conveyor belt. After the first shearing component and the second shearing component cut off the defective part of the steel strip, at this time, the staff can place the steel strip with the defective part on the third conveyor belt for subsequent recycling treatment, and the steel strip that does not reach the specific length but has no surface defects is placed on the second conveyor belt for further processing or directly used for other production. Compared with the current shearing device, the present invention can cut off the defective part of the steel strip at one time, reducing the trouble of subsequent secondary shearing.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: Compared with the current shearing device, the present invention is provided with a detector, a first shearing component, and a second shearing component. The detector is used to detect whether there are defects on the surface of the steel strip. When the head of the defective part on the steel strip is located below the second shearing component and the tail of the defective part on the steel strip is located below the first shearing component, the first shearing component and the second shearing component can cut off the defective part on the steel strip at one time, thereby avoiding subsequent secondary shearing of the steel strip with defects on the surface and not reaching a specific length. In addition, when there are no defects on the surface of the steel strip, the steel strip is not in a working state all the time. This ensures that when the first tool is worn due to long-term work, the second tool is still in good condition. At this time, the staff can use the second tool as the main tool to shear the steel strip, thus avoiding the trouble of stopping work to replace the shearing tool during working hours. The present invention is also provided with a grinding component, which can remove the burrs at the shearing opening of the steel strip, preventing the burrs at the shearing opening of the steel strip from scratching the staff when the staff picks up the sheared steel strip later. Finally, the present invention is also provided with two groups of leveling components. The two groups of leveling components are driven by two groups of first linear motors to move on the upper and lower sides of the steel strip, so as to perform fixed-point leveling on the sunken or bent parts of the steel strip. Compared with the current method of leveling the steel strip by stretching, the present invention makes the area to be leveled of the steel strip heat and soften through the alternating magnetic field generated by the coil, so as to perform the leveling work on the thicker steel strip with a smaller force. At the same time, when the whole steel strip is flat and there are wrinkles and bends in a small area on the side, the leveling component can prevent the wrinkled and bent parts of the steel strip from being crushed and deformed by the conveying rollers of the conveying device when the steel strip enters the conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 is a schematic diagram of the connection between the workbench of the present invention and the first conveyor belt;

[0016] Figure 3 is a schematic diagram of the bottom structure of the lifting seat of the present invention;

[0017] Figure 4 is a schematic diagram of the internal structure of the lifting seat of the present invention;

[0018] Figure 5 is a schematic diagram of the workbench structure of the present invention;

[0019] Figure 6 is a schematic diagram of the connection between the workbench of the present invention and the first shearing table;

[0020] Figure 7 of the present invention Figure 6 is a schematic diagram of the structure of part A;

[0021] Figure 8 Schematic diagram of the internal structure of the pretreatment rack of the present invention;

[0022] Figure 9 of the present invention Figure 8 Schematic diagram of the structure of part B-B in

[0023] Figure 10 Schematic diagram of the structure of the leveling component of the present invention.

[0024] In the figure: 1. Loading mechanism; 2. Steel strip; 3. Pretreatment rack; 31. Cleaning component; 32. Detector; 33. First linear motor; 34. Leveling component; 341. Fixed frame; 3411. First cylinder; 342. Correction seat; 3421. Coil; 4. Conveying mechanism; 5. Workbench; 51. First shearing table; 52. Second shearing table; 53. Second linear motor; 54. Support frame; 55. Second cylinder; 56. Lifting seat; 561. Lead screw assembly; 5611. Adjusting motor; 562. Telescopic tube; 563. Transmission groove; 5631. Piston; 564. First shearing frame; 5641. First mounting plate; 5642. First cutter; 565. Second shearing frame; 5651. Second mounting plate; 5652. Second cutter; 566. Third cylinder; 57. Grinding component; 571. Groove; 572. Movable seat; 573. Electromagnet; 6. First conveyor belt; 7. Second conveyor belt; 8. Third conveyor belt. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment: As Figures 1-8As shown in the figure, the present invention provides a technical solution, a steel belt shearing device with a surface defect detection function. The shearing device includes a feeding mechanism 1, a pretreatment rack 3, a conveying mechanism 4, a workbench 5 and a first conveyor belt 6. A steel belt 2 is arranged on the feeding mechanism 1. When the present invention works, one end of the steel belt 2 sequentially passes through the pretreatment rack 3, the conveying mechanism 4 and the workbench 5. Two groups of detectors 32 are arranged inside the pretreatment rack 3. The two groups of detectors 32 are relatively arranged on the upper and lower sides of the steel belt 2. Whether there are defects such as cracks, depressions, and damages on the surface of the steel belt 2 is detected by the two groups of detectors 32 (the detectors 32 can be selected from existing technologies, such as vision detectors, ultrasonic detectors, etc.). A first shearing table 51 is arranged at one end of the workbench 5 above and close to the conveying mechanism 4, and a second shearing rack 565 is arranged at one end of the workbench 5 above and far from the conveying mechanism 4. The first conveyor belt 6 is arranged below the second shearing table 52. A support frame 54 is arranged above the first shearing table 51. A lifting seat 56 is arranged inside the support frame 54. A second cylinder 55 is arranged above the support frame 54. The lifting seat 56 is controlled to move up and down by the second cylinder 55. A first shearing component and a second shearing component are arranged inside the lifting seat 56. The first shearing component is movably installed at one end of the lifting seat 56 inside and close to the conveying mechanism 4, and the second shearing component is fixedly installed at one end of the lifting seat 56 inside and far from the conveying mechanism 4. When the quality of the steel belt 2 is qualified, the first shearing component will work intermittently to shear the steel belt 2 into products of a specific length. Finally, these qualified products will fall onto the first conveyor belt 6 and enter the next process. The shearing device further includes a second conveyor belt 7 and a third conveyor belt 8. The second conveyor belt 7 and the third conveyor belt 8 are relatively arranged on both sides below the first conveyor belt 6. The second conveyor belt 7, the third conveyor belt 8 and the workbench 5 are not on the same side of the first conveyor belt 6. When the two groups of detectors 32 detect defects on the steel belt 2, the two groups of detectors 32 will transmit a group of signals to the first shearing component and the second shearing component. Since the positions of the two groups of detectors 32 are fixed, it is ensured that the conveying speed of the steel belt 2 by the conveying mechanism 4 is constant. Then the staff can know the time when the defective part on the steel belt 2 reaches below the first shearing component and the second shearing component. When the head end of the defective part on the steel belt 2 is located below the second shearing component and the tail end of the defective part on the steel belt 2 is located below the first shearing component, the first shearing component and the second shearing component work synchronously. The defective part on the steel belt 2 is sheared off by the first shearing component and the second shearing component. At this time, the staff can place the steel belt 2 with the defective part on the third conveyor belt 8 for subsequent recycling treatment. The steel belt 2 that has not reached the specific length but has no surface defects is placed on the second conveyor belt 7 for further processing or directly used in other production. Compared with the current shearing device, the present invention can shear off the defective part on the steel belt 2 at one time, reducing the trouble of subsequent secondary shearing.

[0027] As Figures 2-4As shown in the figure, a lead screw assembly 561, a telescopic tube 562, a transmission groove 563, and a third cylinder 566 are provided inside the lifting seat 56. A piston 5631 and hydraulic oil are provided in the transmission groove 563. The working end of the third cylinder 566 is connected to the piston 5631. An adjustment motor 5611 is provided outside the lifting seat 56. The working end of the adjustment motor 5611 is connected to the lead screw assembly 561. The first shearing assembly includes a first shearing frame 564, a first mounting plate 5641, and a first cutter 5642. The first shearing frame 564 is connected to the working end of the lead screw assembly 561. A first cavity is provided inside the first shearing frame 564. The first cutter 5642 is fixedly installed at the lower end of the first mounting plate 5641. The upper end of the first mounting plate 5641 is movably installed in the first cavity through a first compression spring. One end of the telescopic tube 562 is communicated with the transmission groove 563 through a first conduit and a first valve. The other end of the telescopic tube 562 is communicated with the first cavity through a second conduit.

[0028] As Figures 2-4 As shown in the figure, the second shearing assembly includes a second shearing frame 565, a second mounting plate 5651, and a second cutter 5652. The second shearing frame 565 is fixedly installed inside the lifting seat 56. A second cavity is provided inside the second shearing frame 565. The second cutter 5652 is fixedly installed at the lower end of the second mounting plate 5651. The upper end of the second mounting plate 5651 is movably installed in the second cavity through a second compression spring. The second cavity is communicated with the transmission groove 563 through a third conduit and a second valve.

[0029] When there are no defects on the surface of the steel strip 2, the first valve is in the open state, while the second valve is in the closed state. At this time, the piston 5631 is driven to lift by the third cylinder 566 to control the movement of the first cutter 5642, and the steel strip 2 is sheared by the first cutter 5642. When there are defects on the steel strip 2, and at the same time, the head end of the defective part is located below the second cutter 5652, and the tail end of the defective part on the steel strip 2 is located below the first cutter 5642, both the first valve and the second valve will be in the open state. When the third cylinder 566 drives the piston 5631 to move, the first cutter 5642 and the second cutter 5652 will move synchronously, and the defective part on the steel strip 2 is sheared off by the first cutter 5642 and the second cutter 5652. Finally, the present invention controls the movement of the first shearing frame 564 inside the lifting seat 56 through the adjustment motor 5611 and the lead screw assembly 561. Through the above technical solutions, the present invention can adjust the positions of the first cutter 5642 and the second cutter 5652 in real time according to the width of the defective part on the steel strip 2, so as to improve the application range of the present invention.

[0030] As Figure 3As shown, a first pressing plate is provided below one end of the first shearing frame 564 away from the second shearing frame 565, and a second pressing plate is provided below one end of the second shearing frame 565 away from the first shearing frame 564. The distance between the first pressing plate and the first shearing table 51 is less than the distance between the first cutter 5642 and the first shearing table 51. The distance between the second pressing plate and the second shearing table 52 is less than the distance between the second cutter 5652 and the second shearing table 52. When the present invention shears the steel strip 2, the second cylinder 55 will first control the lifting seat 56 to descend until the first pressing plate and the second pressing plate are in contact with the steel strip 2. At this time, the first cutter 5642 and the second cutter 5652 are in a non-contact state with the steel strip 2. The steel strip 2 is pressed by the first pressing plate and the second pressing plate to prevent the steel strip 2 from shaking during shearing. When officially starting to shear the steel strip 2, it is determined whether to open the second valve according to the surface quality of the steel strip 2. Finally, through the above technical solution of the present invention, it can be ensured that the second cutter 5652 is not in a working state in most cases. Therefore, when the first cutter 5642 is worn due to long-term work, the second cutter 5652 is still in good condition. At this time, the staff can use the second cutter 5652 as the main cutter to shear the steel strip 2, thereby avoiding the trouble of stopping work to replace the shearing cutter during working hours.

[0031] As Figures 5-7As shown in the figure, a second linear motor 53 is arranged inside the workbench 5. The working end of the second linear motor 53 is connected to the first shearing table 51. Grinding components 57 are arranged at one end of the first shearing table 51 and the second shearing table 52 close to each other. The grinding component 57 includes a groove 571, a movable seat 572 and an electromagnet 573. The movable seat 572 is movably installed in the groove 571 through a vibration spring. The electromagnet 573 is fixedly installed at the side end of the groove 571. A magnetic block is embedded at one end of the movable seat 572 close to the electromagnet 573. A shearing opening is arranged at the upper end of the movable seat 572. The upper end of the movable seat 572 is made of abrasive material. The first cutter 5642 and the second cutter 5652 are respectively aligned with the shearing openings arranged at the upper ends of the two groups of movable seats 572. When the present invention adjusts the first cutter 5642 by adjusting the motor 5611 and the lead screw assembly 561, the second linear motor 53 will synchronously drive the first shearing table 51 to move, so as to ensure that the movable seat 572 in the first shearing table 51 is always aligned with the first cutter 5642. When the first cutter 5642 shears the steel strip 2, the cutting edge of the first cutter 5642 falls into the shearing opening arranged at the upper end of the movable seat 572, so as to improve the service life of the first shearing table 51. Finally, after the steel strip 2 is sheared, the first cutter 5642 will leave the steel strip 2 prior to the first pressing plate and the second pressing plate. At this time, the electromagnet 573 in the first shearing table 51 will intermittently generate a magnetic field that repels the movable seat 572, so as to drive the movable seat 572 in the first shearing table 51 to move, and remove the burrs at the shearing opening of the steel strip 2 through the movable seat 572, avoiding the burrs at the shearing opening of the steel strip 2 from scratching the staff when the subsequent staff picks up the sheared steel strip 2 (when the second cutter 5652 works, the working principle of the grinding component 57 inside the second shearing table 52 is as above and will not be elaborated here).

[0032] As Figures 8-9 shown, two cleaning components 31 are arranged at one end of the pretreatment rack 3 close to the feeding mechanism 1. The two cleaning components 31 are arranged oppositely on the upper and lower sides of the steel strip 2, so as to avoid the influence of impurities during the subsequent surface defect detection of the steel strip (the technical effect achieved by the cleaning component 31 is a conventional technical means in the art and the specific structure will not be described). Two leveling components 34 are arranged at one end of the pretreatment rack 3 close to the conveying mechanism 4. The two leveling components 34 are arranged oppositely on the upper and lower sides of the steel strip 2. Each leveling component 34 is movably installed in the pretreatment rack 3 through a first linear motor 33. The two leveling components 34 are driven by the two first linear motors 33 to move on the upper and lower sides of the steel strip 2, so as to perform fixed-point leveling on the sunken or bent parts of the steel strip.

[0033] As Figures 8-10As shown in the figure, the leveling assembly 34 includes a fixing frame 341 and a leveling seat 342. The fixing frame 341 is fixedly installed at the working end of the first linear motor 33. The leveling seat 342 is arranged on the side of the fixing frame 341 close to the steel strip 2. A first air cylinder 3411 is arranged inside the fixing frame 341 to control the movement of the leveling seat 342 through the first air cylinder 3411. A coil 3421 is arranged inside the leveling seat 342. When the detector 32 in the present invention detects that the side of the steel strip 2 has wrinkles or bends, or a certain area in the middle has a depression, the two groups of leveling assemblies 34 are driven by the two groups of first linear motors 33 to move to the corresponding positions, and then the two groups of leveling seats 342 are driven by the two groups of first air cylinders 3411 to squeeze the steel strip 2. Finally, an alternating current is supplied to the coil 3421, and the alternating magnetic field generated by the coil 3421 makes the area of the steel strip 2 to be leveled heat and soften, so as to level the thicker steel strip with a smaller acting force, and avoid the wrinkled and bent parts of the steel strip 2 being rolled and deformed by the conveying rollers of the conveying device when the steel strip 2 enters the conveying mechanism 4.

[0034] Working principle of the present invention: During operation, one end of the steel strip 2 is sequentially passed through the pretreatment frame 3, the conveying mechanism 4 and the workbench 5. The two groups of detectors 32 are used to detect whether there are defects such as cracks, depressions, and damages on the surface of the steel strip 2. When the surface quality of the steel strip 2 is defect-free, the first valve is in the open state, while the second valve is in the closed state. The piston 5631 is driven to rise and fall by the third air cylinder 566 to control the movement of the first cutting tool 5642. The steel strip 2 is cut into products of a specific length by the first cutting tool 5642. When the two groups of detectors 32 detect defects on the steel strip 2, the two groups of detectors 32 will send a set of signals to the third air cylinder 566, the first valve, and the second valve. When the head end of the defective part on the steel strip 2 is located below the second cutting tool 5652 and the tail end of the defective part on the steel strip 2 is located below the first cutting tool 5642, the first cutting tool 5642 and the second cutting tool 5652 are controlled to move synchronously by the third air cylinder 566, and the defective part on the steel strip 2 is cut off by the first cutting tool 5642 and the second cutting tool 5652. At this time, the staff can place the defective part of the steel strip 2 on the third conveyor belt 8 for subsequent recycling. The steel strip 2 that has not reached the specific length but has no defects on the surface is placed on the second conveyor belt 7 for further processing or directly used in other production. Compared with the current cutting device, the present invention can cut off the defective part on the steel strip 2 at one time, reducing the trouble of subsequent secondary cutting.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Thus, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A steel strip shearing device with surface defect detection function, characterized in that: The shearing device comprises a feeding mechanism (1), a pretreatment rack (3), a conveying mechanism (4), a workbench (5) and a first conveyor belt (6); a steel belt (2) is arranged on the feeding mechanism (1); one end of the steel belt (2) passes through the pretreatment rack (3), the conveying mechanism (4) and the workbench (5) in sequence; two groups of detectors (32) are arranged inside the pretreatment rack (3); the two groups of detectors (32) are arranged on the upper and lower sides of the steel belt (2) in a relative manner; a first shearing platform (51) is arranged above the end of the workbench (5) close to the conveying mechanism (4); and a second shearing platform (56) is arranged above the end of the workbench (5) away from the conveying mechanism (4). 5), the first conveyor belt (6) is arranged below the second shearing platform (52), a support frame (54) is arranged above the first shearing platform (51), a lifting seat (56) is arranged inside the support frame (54), a second cylinder (55) is arranged above the support frame (54), the lifting seat (56) is controlled to move up and down by the second cylinder (55), a first shearing assembly and a second shearing assembly are arranged inside the lifting seat (56), the first shearing assembly is movably mounted on one end of the lifting seat (56) close to the conveying mechanism (4), and the second shearing assembly is fixedly mounted on one end of the lifting seat (56) away from the conveying mechanism (4); The lifting seat (56) is provided with a lead screw assembly (561), a telescopic tube (562), a transmission groove (563) and a third cylinder (566) inside, a piston (5631) and hydraulic oil are provided inside the transmission groove (563), a working end of the third cylinder (566) is connected to the piston (5631), an adjusting motor (5611) is provided on the outside of the lifting seat (56), and the working end of the adjusting motor (5611) is connected to the lead screw assembly (561), and the first shearing assembly includes a first shearing frame (564), a first mounting plate (5641) , a first tool (5642), the first shearing frame (564) is connected to the working end of the lead screw assembly (561), a first cavity is arranged in the first shearing frame (564), the first tool (5642) is fixedly mounted on the lower end of the first mounting plate (5641), the upper end of the first mounting plate (5641) is movably mounted in the first cavity via a first compression spring, one end of the telescopic tube (562) is connected to the transmission groove (563) via a first conduit and a first valve, and the other end of the telescopic tube (562) is connected to the first cavity via a second conduit; The second shearing assembly comprises a second shearing frame (565), a second mounting plate (5651) and a second cutter (5652); the second shearing frame (565) is fixedly mounted in the lifting seat (56); a second cavity is provided in the second shearing frame (565); the second cutter (5652) is fixedly mounted on the lower end of the second mounting plate (5651); the upper end of the second mounting plate (5651) is movably mounted in the second cavity via a second compression spring; the second cavity is connected to the transmission groove (563) via a third conduit and a second valve.

2. The steel strip shearing device with surface defect detection function according to claim 1, characterized in that: A first pressing plate is arranged below one end of the first shearing frame (564) away from the second shearing frame (565), and a second pressing plate is arranged below one end of the second shearing frame (565) away from the first shearing frame (564). The distance between the first pressing plate and the first shearing table (51) is smaller than the distance between the first tool (5642) and the first shearing table (51), and the distance between the second pressing plate and the second shearing table (52) is smaller than the distance between the second tool (5652) and the second shearing table (52).

3. The steel strip shearing device with surface defect detection function according to claim 2, characterized in that: A second linear motor (53) is arranged inside the workbench (5), and a working end of the second linear motor (53) is connected to the first shearing table (51). A grinding assembly (57) is arranged at the ends of the first shearing table (51) and the second shearing table (52) that are close to each other. The grinding assembly (57) comprises a groove (571), a movable seat (572) and an electromagnet (573). The movable seat (572) is movably installed in the groove (571) through a vibration spring. The electromagnet (573) is fixedly installed at the side end of the groove (571). A magnetic block is embedded at one end of the movable seat (572) close to the electromagnet (573). A shearing notch is arranged at the upper end of the movable seat (572). The upper end of the movable seat (572) is made of abrasive material. The first tool (5642) and the second tool (5652) are respectively aligned with the shearing notches arranged at the upper ends of the two groups of movable seats (572).

4. A steel strip shearing device with surface defect detection function according to any one of claims 1 to 3, characterized in that: Two groups of cleaning components (31) are arranged at one end of the pre-treatment frame (3) near the feeding mechanism (1), and the two groups of cleaning components (31) are arranged on the upper and lower sides of the steel belt (2) in a relative manner. Two groups of leveling components (34) are arranged at one end of the pre-treatment frame (3) near the conveying mechanism (4), and the two groups of leveling components (34) are arranged on the upper and lower sides of the steel belt (2) in a relative manner. Each group of leveling components (34) is movably installed in the pre-treatment frame (3) via a group of first linear motors (33).

5. The steel strip shearing device with surface defect detection function according to claim 4, characterized in that: The leveling assembly (34) comprises a fixed frame (341) and a correction seat (342); the fixed frame (341) is fixedly mounted on the working end of the first linear motor (33); the correction seat (342) is arranged on a side of the fixed frame (341) close to the steel belt (2); a first cylinder (3411) is arranged in the fixed frame (341); the movement of the correction seat (342) is controlled by the first cylinder (3411); and a coil (3421) is arranged in the correction seat (342).

6. The steel strip shearing device with surface defect detection function according to claim 1, characterized in that: The shearing device further comprises a second conveyor belt (7) and a third conveyor belt (8), wherein the second conveyor belt (7) and the third conveyor belt (8) are arranged opposite to each other on two sides below the first conveyor belt (6), and the second conveyor belt (7), the third conveyor belt (8) and the workbench (5) are not on the same side of the first conveyor belt (6).

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