Automatic edge searching device of laser cutting machine for plates and edge searching method of automatic edge searching device

Abstract

The invention discloses an automatic edge searching device of a laser cutting machine for plates and an edge searching method of the automatic edge searching device. The automatic edge searching device comprises a bearing mechanism, a discharging mechanism used for discharging is installed in the bearing mechanism, a moving mechanism capable of moving along the X axis is installed at the top of the bearing mechanism, and an edge searching cutting mechanism capable of moving along the Y axis is installed on the moving mechanism; the edge-searching cutting mechanism comprises a connecting base and information processing equipment, one side of the connecting base is in transmission connection with the moving mechanism, a detachable industrial camera and a detachable laser cutting head are installed on the other side of the connecting base, and the industrial camera is in wireless connection with the information processing equipment. Through cooperation of the industrial camera and the information processing equipment, plate edges of different materials and shapes can be accurately recognized, the cutting precision is ensured, through cooperation of the information processing equipment, the bearing mechanism and the moving mechanism, the cutting path of the laser cutting head can be monitored and adjusted in real time in the cutting process, and therefore the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting, and in particular relates to an automatic edge-finding device and an edge-finding method of a laser cutting machine for a plate. Background Art

[0002] Laser cutting machines have the advantages of good controllable energy density, narrow cutting seams, small workpiece deformation, good cutting surface quality, unlimited cutting shapes, and contactless processing. Therefore, laser processing technology has gradually entered various manufacturing industries, improving the technical content of products, accelerating the speed of replacement, realizing agile manufacturing, and meeting the market demand for "personalized" products. In the metal industry, when cutting large-format, medium-thick metal plates, in order to improve the utilization rate of the plates, the straight edge of the plate must be parallel to the x-axis processing direction of the machine tool before laser cutting.

[0003] In the modern manufacturing industry, especially in the field of cutting and processing, accurate edge positioning technology is essential. Traditional cutting methods usually rely on manual measurement and manual adjustment, resulting in problems such as insufficient cutting accuracy, material waste and low production efficiency. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] An automatic edge-finding device for a plate laser cutting machine comprises a bearing mechanism, a material-feeding mechanism for material-feeding is installed inside the bearing mechanism, a moving mechanism movable along an X-axis is installed on the top, and an edge-finding and cutting mechanism movable along a Y-axis is installed on the moving mechanism;

[0006] The edge-finding cutting mechanism includes a connecting seat and an information processing device. One side of the connecting seat is transmission-connected to the moving mechanism, and the other side is equipped with a detachable industrial camera and a laser cutting head. The industrial camera is wirelessly connected to the information processing device.

[0007] The industrial camera transmits the collected plate image information to the information processing device, which controls the supporting mechanism and the moving mechanism to adjust the cutting path of the laser cutting head in real time according to the edge information.

[0008] As a preferred embodiment of the above technical solution, the bearing mechanism includes a bearing platform, a plurality of bearing beams are fixedly connected to the inner wall of the bearing platform, and mounting grooves are opened on both sides of the bearing platform, a screw rod 1 is rotatably connected to one side of the mounting groove, one end of the screw rod 1 passes through one side of the bearing platform, two screw rods 1 are located outside the bearing platform at one end fixedly connected to a driving wheel and a driven wheel respectively, the driving wheel and the driven wheel are connected by belt drive, the outer side of the bearing platform is fixedly connected to a mounting seat, one side of the mounting seat is fixedly connected to a motor 1, and the output end of the motor 1 is connected to the end of any one of the screw rods 1.

[0009] As a preferred embodiment of the above technical solution, the unloading mechanism includes a transverse plate, one side of which is fixedly connected to a plurality of stepping beams, one of the stepping beams is located between two load-bearing beams, and the transverse plate controls the stepping movement of the stepping beam through a driving assembly.

[0010] As a preferred embodiment of the above technical solution, the driving assembly includes a cylinder 1 and a cylinder 2 respectively fixed on the inner walls on both sides of the support platform, the output ends of the cylinder 1 and the cylinder 2 are respectively fixedly connected with a slider 1 and a slider 2, the side of the transverse plate away from the stepping beam is fixedly connected with a slide rail 1 and a slide rail 2, the slider 1 is slidably connected to the slide rail 1, and the slider 2 is slidably connected to the slide rail 2.

[0011] As a preferred embodiment of the above technical solution, the moving mechanism includes a column, two of the columns are connected by a crossbeam, a side of the crossbeam away from the column is fixedly connected to a fixing plate three and a fixing plate four, a side of the fixing plate three is fixedly connected to a motor two, an output end of the motor two is fixedly connected to a screw rod two, and an end of the screw rod two is rotatably connected to the fixing plate four;

[0012] The crossbeam is provided with a guide groove, a guide block is fixedly connected to one side of the connecting seat, a thread sleeve is fixedly connected to the side of the guide block away from the connecting seat, the guide block is slidably connected to the guide groove, and the thread sleeve is threadedly connected to the screw rod.

[0013] As a preferred embodiment of the above technical solution, the column includes a longitudinal beam 1 threadedly connected to a screw rod 1, one end of the longitudinal beam 1 is slidably connected to a mounting groove, and the other end is provided with a longitudinal beam 2 in an inner ring movable sleeve, and the side walls of the longitudinal beam 1 and the longitudinal beam 2 are respectively fixedly connected with a fixed plate 1 and a fixed plate 2, and an oil cylinder 3 for controlling the telescopic movement of the longitudinal beam 2 is installed between the fixed plate 1 and the fixed plate 2.

[0014] The edge-finding method of the automatic edge-finding device of the plate laser cutting machine according to any one of the above items comprises the following steps:

[0015] S1. Image acquisition:

[0016] The plate placed on the load-bearing beam is photographed by an industrial camera, and the image is processed by denoising and contrast enhancement to improve the accuracy of edge recognition;

[0017] S2, edge detection:

[0018] Use edge detection algorithms to identify edges in an image, or determine edge locations by analyzing brightness changes in an image;

[0019] S3, edge positioning:

[0020] Extract the feature points of the edge, identify the specific edge lines of the plate, calculate the precise coordinates of the edge based on the extracted feature points, and determine the cutting starting point and path;

[0021] S4. Feedback adjustment:

[0022] Feedback edge information to the cutting device to adjust the cutting path in real time to ensure precise cutting.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention can accurately identify the edges of plates of different materials and shapes through the cooperation of industrial cameras and information processing equipment to ensure cutting accuracy;

[0025] 2. The present invention can monitor and adjust the cutting path of the laser cutting head in real time during the cutting process through the cooperation of the information processing equipment with the bearing mechanism and the moving mechanism, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structure diagram of the automatic edge-finding device of the laser cutting machine for plates in the embodiment is shown;

[0027] Figure 2 What is shown is a schematic structural diagram of the bearing mechanism in the embodiment;

[0028] Figure 3 What is shown is a schematic diagram of the structure of the feeding mechanism in the embodiment;

[0029] Figure 4 What is shown is a schematic diagram of the structure of the moving mechanism in the embodiment;

[0030] Figure 5 What is shown is a schematic structural diagram of the edge-finding cutting mechanism in the embodiment.

[0031] Description of reference numerals:

[0032] 10. Carrying mechanism; 11. Carrying platform; 12. Mounting groove; 13. Screw rod 1; 14. Driving wheel; 15. Driven wheel; 16. Belt; 17. Mounting seat; 18. Motor 1; 19. Carrying beam; 20. Unloading mechanism; 21. Transverse plate; 22. Stepping beam; 23. Slide rail 1; 24. Slide rail 2; 25. Cylinder 1; 26. Slider 1; 27. Cylinder 2; 30. Moving mechanism; 31. Longitudinal beam 1; 32. Longitudinal beam 2; 33. Fixed plate 1; 34. Cylinder 3; 35. Fixed plate 2; 36. Crossbeam; 37. Guide groove; 38. Fixed plate 3; 39. Fixed plate 4; 310. Motor 2; 311. Screw rod 2; 40. Edge-finding cutting mechanism; 41. Guide block; 42. Thread sleeve; 43. Connecting seat; 44. Industrial camera; 45. Laser cutting head. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0034] Example

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the automatic edge-finding device of the laser cutting machine for plates comprises a supporting mechanism 10, wherein a material unloading mechanism 20 for unloading is installed inside the supporting mechanism 10, a moving mechanism 30 movable along the X-axis is installed on the top, and an edge-finding and cutting mechanism 40 movable along the Y-axis is installed on the moving mechanism 30; the edge-finding and cutting mechanism 40 comprises a connecting seat 43 and an information processing device, one side of the connecting seat 43 is transmission-connected to the moving mechanism 30, and the other side is installed with a detachable industrial camera 44 and a laser cutting head 45, and the industrial camera 44 is wirelessly connected to the information processing device; the industrial camera 44 transmits the collected plate image information to the information processing device, and the information processing device controls the supporting mechanism 10 and the moving mechanism 30 to adjust the cutting path of the laser cutting head 45 in real time according to the edge information.

[0036] Specifically, through the cooperation between the industrial camera 44 and the information processing equipment, the edges of plates of different materials and shapes can be accurately identified to ensure cutting accuracy. Through the cooperation between the information processing equipment and the supporting mechanism 10 and the moving mechanism 30, the cutting path of the laser cutting head 45 can be monitored and adjusted in real time during the cutting process, thereby improving production efficiency.

[0037] like Figure 1 and Figure 2 As shown, the bearing mechanism 10 includes a bearing platform 11, the inner wall of which is fixedly connected to a plurality of bearing beams 19, and mounting grooves 12 are provided on both sides of the bearing platform 11, one side of the mounting groove 12 is rotatably connected to a screw rod 13, one end of the screw rod 13 passes through one side of the bearing platform 11, and one end of two screw rods 13 located outside the bearing platform 11 are respectively fixedly connected to a driving wheel 14 and a driven wheel 15, and the driving wheel 14 and the driven wheel 15 are connected through a belt 16 for transmission, and a mounting seat 17 is fixedly connected to the outer side of the bearing platform 11, and a motor 18 is fixedly connected to one side of the mounting seat 17, and the output end of the motor 18 is connected to the end of any one of the screw rods 13.

[0038] Specifically, when the motor 18 drives the screw rod 13 connected thereto to rotate, the screw rod 13 can drive another screw rod 13 to rotate through the transmission cooperation of the driving wheel 14, the driven wheel 15 and the belt 16, so that the two screw rods 13 with the same thread direction can rotate in the same direction at the same time.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, the unloading mechanism 20 includes a transverse plate 21, and a plurality of stepping beams 22 are fixedly connected to one side of the transverse plate 21. One stepping beam 22 is located between two load-bearing beams 19, and the transverse plate 21 controls the stepping movement of the stepping beam 22 through a driving assembly.

[0040] Specifically, when the driving assembly drives the walking beam 22 to move in steps, the walking beam 22 will slowly push the plate placed on the load-bearing beam 19 to move linearly, so as to facilitate automatic unloading of the plate.

[0041] like Figure 3 As shown, the driving assembly includes a cylinder 1 25 and a cylinder 2 27 respectively fixed on the inner walls of both sides of the support platform 11, the output ends of the cylinder 1 25 and the cylinder 2 27 are respectively fixedly connected with a slider 1 26 and a slider 2 28, the side of the transverse plate 21 away from the stepping beam 22 is fixedly connected with a slide rail 1 23 and a slide rail 24, the slider 1 26 is slidably connected to the slide rail 1 23, and the slider 2 28 is slidably connected to the slide rail 2 24.

[0042] Specifically, when the cylinder 1 25 is started, the cylinder 2 27 is in a stopped state, and vice versa, when the cylinder 1 25 pushes the transverse plate 21 to rise, the transverse plate 21 will lift the plate away from the load-bearing beam 19 through the stepping beam 22. At this time, the slide rail 24 will move in the slider 28, and the cylinder 2 27 will start to push the transverse plate 21 to move horizontally. The moving distance is less than the spacing between two adjacent load-bearing beams 19, and then the cylinder 1 25 is started again to control the stepping beam 22 to fall, and the plate is placed on the load-bearing beam 19. Finally, the cylinder 2 27 pulls the transverse plate 21 back to its original position, and repeats this movement to gradually move the plate for unloading.

[0043] like Figure 1 , Figure 4 and Figure 5As shown, the moving mechanism 30 includes a column, and the two columns are connected by a cross beam 36. A fixing plate three 38 and a fixing plate four 39 are fixedly connected to the side of the cross beam 36 away from the column, a motor two 310 is fixedly connected to the side of the fixing plate three 38, a screw rod two 311 is fixedly connected to the output end of the motor two 310, and the end of the screw rod two 311 is rotatably connected to the fixing plate four 39. The cross beam 36 is provided with a guide groove 37, a guide block 41 is fixedly connected to one side of the connecting seat 43, a threaded sleeve 42 is fixedly connected to the side of the guide block 41 away from the connecting seat 43, the guide block 41 is slidably connected to the guide groove 37, and the threaded sleeve 42 is threadedly connected to the screw rod two 311.

[0044] It should be noted that fill lights are arranged around the industrial camera 44 to evenly illuminate the surface of the plate to reduce shadows and reflections. The fill lights are usually LED lights.

[0045] Specifically, when the second motor 310 drives the second screw rod 311 to rotate, the guide block 41 slidably installed in the guide groove 37 will drive the laser cutting head 45 to move along the Y axis through the threaded cooperation between the thread sleeve 42 and the second screw rod 311.

[0046] like Figure 4 As shown, the column includes a longitudinal beam 13 threadedly connected to the screw rod 13, one end of the longitudinal beam 13 is slidably connected to the mounting groove 12, and the other end is provided with a longitudinal beam 2 32 in the inner ring movable sleeve, and the side walls of the longitudinal beam 1 31 and the longitudinal beam 2 32 are respectively fixedly connected with a fixing plate 1 33 and a fixing plate 2 35, and a cylinder 34 for controlling the telescopic movement of the longitudinal beam 2 32 is installed between the fixing plate 1 33 and the fixing plate 2 35.

[0047] Specifically, the longitudinal beam 31 drives the edge-finding cutting mechanism 40 to move along the X-axis through the threaded cooperation with the screw rod 13. At the same time, the distance from the cross beam 36 to the load-bearing beam 19 can be controlled by the cylinder 34 to adjust the cutting distance between the laser cutting head 45 and the plate.

[0048] The edge finding method of the automatic edge finding device of the plate laser cutting machine comprises the following steps:

[0049] S1. Image acquisition:

[0050] The plate placed on the load-bearing beam 19 is photographed by an industrial camera 44, and the image is processed by denoising, contrast enhancement, etc. to improve the accuracy of edge recognition;

[0051] S2, edge detection:

[0052] Use edge detection algorithms to identify edges in images, such as the Canny algorithm, Sobel operator, etc., or determine edge locations by analyzing brightness changes in images;

[0053] S3, edge positioning:

[0054] Extract the feature points of the edge, identify the specific edge lines of the plate, calculate the precise coordinates of the edge based on the extracted feature points, and determine the cutting starting point and path;

[0055] S4. Feedback adjustment:

[0056] Feedback edge information to the cutting device to adjust the cutting path in real time to ensure precise cutting.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An automatic edge-finding device for a laser cutting machine for a plate, comprising a carrying mechanism (10), characterized in that: A material unloading mechanism (20) for unloading materials is installed inside the carrying mechanism (10), a moving mechanism (30) movable along the X-axis is installed on the top, and an edge-finding cutting mechanism (40) movable along the Y-axis is installed on the moving mechanism (30); The edge-finding cutting mechanism (40) comprises a connecting seat (43) and an information processing device. One side of the connecting seat (43) is transmission-connected to the moving mechanism (30), and the other side is equipped with a detachable industrial camera (44) and a laser cutting head (45). The industrial camera (44) is wirelessly connected to the information processing device. The industrial camera (44) transmits the collected plate image information to the information processing device, and the information processing device controls the supporting mechanism (10) and the moving mechanism (30) to adjust the cutting path of the laser cutting head (45) in real time according to the edge information.

2. The automatic edge-finding device of the laser cutting machine for plate materials according to claim 1 is characterized in that: The bearing mechanism (10) comprises a bearing platform (11), the inner wall of which is fixedly connected to a plurality of bearing beams (19), and mounting grooves (12) are provided on both sides of the bearing platform (11), one side of the mounting groove (12) is rotatably connected to a screw rod (13), one end of which passes through one side of the bearing platform (11), and one end of two screw rods (13) located outside the bearing platform (11) is respectively fixedly connected to a driving wheel (14) and a driven wheel (15), and the driving wheel (14) and the driven wheel (15) are connected by a belt (16) for transmission, and the outer side of the bearing platform (11) is fixedly connected to a mounting seat (17), one side of which is fixedly connected to a motor (18), and the output end of the motor (18) is connected to the end of any one of the screw rods (13).

3. The automatic edge-finding device of the laser cutting machine for plate materials according to claim 2 is characterized in that: The unloading mechanism (20) comprises a transverse plate (21), one side of which is fixedly connected to a plurality of stepping beams (22), one of which is located between two bearing beams (19), and the transverse plate (21) controls the stepping movement of the stepping beam (22) through a driving component.

4. The automatic edge-finding device for a plate laser cutting machine according to claim 3 is characterized in that: The driving assembly comprises a cylinder 1 (25) and a cylinder 2 (27) respectively fixed on the inner walls of both sides of the support platform (11); the output ends of the cylinder 1 (25) and the cylinder 2 (27) are respectively fixedly connected with a slider 1 (26) and a slider 2 (28); the side of the transverse plate (21) away from the stepping beam (22) is fixedly connected with a slide rail 1 (23) and a slide rail 2 (24); the slide rail 1 (26) is slidably connected to the slide rail 1 (23); and the slide rail 2 (28) is slidably connected to the slide rail 2 (24).

5. The automatic edge-finding device for a plate laser cutting machine according to claim 2, characterized in that: The moving mechanism (30) comprises a column, two of the columns are connected by a crossbeam (36), a side of the crossbeam (36) away from the column is fixedly connected to a fixing plate three (38) and a fixing plate four (39), one side of the fixing plate three (38) is fixedly connected to a motor two (310), an output end of the motor two (310) is fixedly connected to a screw rod two (311), and an end of the screw rod two (311) is rotatably connected to the fixing plate four (39); The cross beam (36) is provided with a guide groove (37), one side of the connecting seat (43) is fixedly connected with a guide block (41), a side of the guide block (41) away from the connecting seat (43) is fixedly connected with a threaded sleeve (42), the guide block (41) is slidably connected to the guide groove (37), and the threaded sleeve (42) is threadedly connected to the second screw rod (311).

6. The automatic edge-finding device for a plate laser cutting machine according to claim 5, characterized in that: The column comprises a longitudinal beam 1 (31) threadedly connected to a screw rod 1 (13); one end of the longitudinal beam 1 (31) is slidably connected to a mounting groove (12); the other end is provided with a longitudinal beam 2 (32) in an inner ring movable sleeve; the side walls of the longitudinal beam 1 (31) and the longitudinal beam 2 (32) are respectively fixedly connected with a fixing plate 1 (33) and a fixing plate 2 (35); a cylinder 3 (34) for controlling the telescopic movement of the longitudinal beam 2 (32) is installed between the fixing plate 1 (33) and the fixing plate 2 (35).

7. The edge-finding method of the automatic edge-finding device of the plate laser cutting machine according to any one of claims 1 to 8, characterized in that: The following steps are included: S1. Image acquisition: The plate placed on the load-bearing beam (19) is photographed by an industrial camera (44), and the image is processed by denoising, contrast enhancement, etc., so as to improve the accuracy of edge recognition; S2, edge detection: Use edge detection algorithms to identify edges in an image, or determine edge locations by analyzing brightness changes in an image; S3, edge positioning: Extract the feature points of the edge, identify the specific edge lines of the plate, calculate the precise coordinates of the edge based on the extracted feature points, and determine the cutting starting point and path; S4. Feedback adjustment: Feedback edge information to the cutting device to adjust the cutting path in real time to ensure precise cutting.

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