Automatic cutting device based on visual identification system

Abstract

The application discloses an automatic cutting equipment based on a visual identification system and belongs to the technical field of machine tool processing. The automatic cutting equipment comprises a machine tool, a conveying belt arranged on the machine tool, first driving motors installed on the two sides of the machine tool, first lead screws installed at the output ends of the two first driving motors, and first movable blocks connected to the first lead screws. The automatic cutting equipment adopts a tensioning and fixing mechanism of multiple components in cooperation. The rotating plate structure in the tensioning component is matched with an electric telescopic machine to realize multidirectional stretching and flat fixing of cloth. Cloth on the bottom of the movable plate is fixed by the pressing block, so that the fixing efficiency is improved. Through the visual identification system, the camera is used for real-time image acquisition and analysis of the cloth surface. Combined with laser positioning, the cloth state and the cutting point can be accurately identified, the cutting path can be automatically adjusted, the cutting edge unevenness and size deviation caused by uneven cloth tension or local shaking can be effectively avoided, and the accuracy and consistency of the cutting pattern are ensured.

Description

Technical Field

[0001] This invention relates to the field of machine tool processing technology, and in particular to an automatic cutting device based on a vision recognition system. Background Technology

[0002] Laser cutting machines are advanced equipment that use high-energy-density laser beams to cut materials and are widely used in many industries.

[0003] However, in the application of existing cutting machine tools, the problem of unstable tension control is common. Traditional equipment mostly uses a double-sided gripper fixing method, which makes the fabric prone to sudden tension changes or local vibrations during the cutting process, resulting in uneven cut edges and dimensional deviations, seriously affecting processing quality and efficiency. At the same time, existing systems lack the ability to perceive and dynamically adjust the fabric's condition in real time, making it difficult to adapt to different materials and process requirements.

[0004] Therefore, we propose an automatic cutting device based on a visual recognition system. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides an automatic cutting device based on a visual recognition system, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic cutting device based on a visual recognition system, comprising a machine tool, a conveyor belt on the machine tool, first drive motors mounted on both sides of the machine tool, first lead screws mounted on the output ends of the two first drive motors, first movable blocks connected to the first lead screws, a sliding groove formed on the side wall of the machine tool above the first lead screws, a second movable block slidably disposed within the sliding groove, a movable plate welded between the first movable blocks and the second movable blocks on both sides, a displacement assembly disposed on the movable plate, and several frames disposed on the outer side of the machine tool, further comprising: the displacement assembly including components fixedly disposed on both sides of the movable plate. Mounting plates, with grooves, protective frames, and slide rails between them, a second drive motor threadedly fixed to one of the mounting plates, a movable box movably mounted on the output shaft of the second drive motor, and a laser cutter mounted on the movable box; a plurality of cameras are mounted on the frame, and a tensioning assembly is mounted above the machine tool on the frame, the tensioning assembly including through slots symmetrically opened on the frame, with sliders slidably disposed in the through slots; a third electric telescopic mechanism is threadedly mounted on both sides of the frame, the end of the third electric telescopic mechanism being threadedly fixed to the slider; a connecting rod is fixedly installed between the sliders, and a first rotating plate and a second rotating plate are movably disposed on the connecting rod.

[0007] In a preferred embodiment, the present invention can be further configured as follows: a base plate is installed at the bottom of the movable plate, and a first electric telescopic mechanism is symmetrically arranged on both sides of the lower surface of the base plate. A pressure block is threaded to the end of the first electric telescopic mechanism. A plurality of vertical rods are arranged on both sides of the pressure block on the base plate. A vertical groove is opened on the outer side of the pressure block corresponding to the vertical rod. A movable baffle is hinged to the side of the vertical rod near the vertical groove. A spring is fixedly arranged at the bottom of the movable baffle. The other end of the spring is fixedly connected to the surface of the vertical rod near the vertical groove.

[0008] In a preferred embodiment, the present invention may be further configured such that a pressure sensor is installed at the bottom of the pressure block.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the protective frame is disposed between the groove and the slide rail; a second lead screw is mounted on the output shaft end of the second drive motor via a coupling; a fixing block is mounted on the second lead screw; the fixing block is fixedly connected to the movable box; the laser cutter extends to the outside of the movable plate; a fixing plate is threadedly mounted on the bottom of the movable box; the fixing plate extends to both sides of the slide rail; a rotating shaft is mounted between the fixing plates via a coupling; and a rotating wheel that abuts against the slide rail is sleeved on the rotating shaft.

[0010] In a preferred embodiment, the present invention may be further configured such that: an extension plate is welded to one side of the movable plate, a second electric telescopic mechanism is threadedly mounted on the extension plate, and a positioning plate is threadedly mounted at the end of the second electric telescopic mechanism extending to the lower part of the extension plate.

[0011] In a preferred embodiment, the present invention can be further configured as follows: the connecting rod is hollow inside, two sleeves are fitted on the connecting rod, a first opening is opened on both sides of the sleeve, a second rotating rod is installed inside the first opening through a coupling, a connecting frame is welded on both sides of the sleeve, a first rotating rod is installed in the middle of the connecting frame through a coupling, a first rotating plate is fitted on the first rotating rod, and a second rotating plate is hinged to the end of the first rotating plate away from the sleeve.

[0012] In a preferred embodiment, the present invention can be further configured as follows: a third drive motor is installed inside the connecting rod via a connecting rod; a second opening is formed on the surface of the connecting rod corresponding to the first opening; the output shaft of the third drive motor extends to the second opening and is fitted with a drive gear; a transmission rod is hinged inside the connecting rod; a first driven gear meshing with the drive gear is fitted on the transmission rod; a second driven gear meshing with the first driven gear is provided on the second rotating rod; and a third driven gear meshing with the second driven gear is provided on the first rotating rod.

[0013] In a preferred embodiment, the present invention can be further configured such that: protrusions are provided on both sides of the machine tool, the protrusions are provided above the table surface of the machine tool, and the first movable block and the second movable block both extend above the protrusions.

[0014] In a preferred embodiment, the present invention can be further configured such that: the bottom of the frame is provided with a pulley with a self-locking structure, and the two sides of the machine tool are provided with a plurality of limiting plates.

[0015] The beneficial effects of this invention are:

[0016] This invention employs a multi-component collaborative tensioning and fixing mechanism. Through the rotating plate structure in the tensioning component and the electric telescopic mechanism, the fabric is stretched and flattened to ensure that there are no wrinkles or bulges in the cutting area. The fabric at the bottom of the movable plate is fixed by the pressure block, which improves the fixing efficiency.

[0017] The visual recognition system uses a camera to collect and analyze real-time images of the fabric surface. Combined with laser positioning, it can accurately identify the fabric condition and cutting points, automatically adjust the cutting path, and effectively avoid uneven cutting edges and size deviations caused by uneven fabric tension or local shaking, ensuring the accuracy and consistency of the cutting pattern. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall side view structure of the present invention;

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the framework structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the machine tool structure of the present invention;

[0023] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point B;

[0024] Figure 7 This is a schematic diagram of the main structure of the movable plate of the present invention;

[0025] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point C;

[0026] Figure 9 This is a schematic diagram of the rear view of the movable plate structure of the present invention;

[0027] Figure 10 For the present invention Figure 9 Schematic diagram of the structure at point D;

[0028] Figure 11 This is a bottom view of the movable plate structure of the present invention;

[0029] Figure 12 This is a bottom view of the pressure block structure of the present invention;

[0030] Figure 13 This is a schematic diagram of the pressing block structure of the present invention;

[0031] Figure 14 This is a schematic diagram of the vertical rod structure of the present invention;

[0032] Figure 15 This is a schematic diagram of the cross-sectional structure of the connecting rod of the present invention;

[0033] Figure 16 This is a schematic diagram of the movable plate structure in Embodiment 2 of the present invention;

[0034] Figure 17 This is a bottom-view structural diagram of the moving block in Embodiment 2 of the present invention;

[0035] Figure 18 This is a schematic diagram of a portion of the machine tool structure in Embodiment 2 of the present invention;

[0036] Figure 19 This is a schematic diagram of the first state in Embodiment 2 of the present invention;

[0037] Figure 20 This is a schematic diagram of the second state in Embodiment 2 of the present invention;

[0038] Figure 21 This is a schematic diagram of the third state in Embodiment 2 of the present invention.

[0039] In the diagram: 1. Machine tool; 2. Conveyor belt; 3. First drive motor; 4. Frame; 5. Camera; 6. Support foot; 7. Limiting plate; 8. Movable plate; 9. Extension plate; 10. Slide rail; 11. Mounting plate; 12. Second drive motor; 13. First movable block; 14. Protective frame; 15. Movable box; 16. Laser cutter; 17. First lead screw; 18. Sliding groove; 19. Second movable block; 20. Protrusion; 21. Vertical rod; 22. Pressure block; 23. First electric telescopic mechanism; 24. Cable chain; 25. Groove; 26. Vertical groove; 27. Second lead screw; 28. Hollow groove; 29. ​​Fixing plate; 30. Rotating wheel; 31. Connecting frame; 32. Fixing block; 33. Movable baffle; 34. 35. Spring; 36. Positioning plate; 37. Second electric telescopic mechanism; 38. Base plate; 39. Third electric telescopic mechanism; 40. Through groove; 41. Slider; 42. Connecting rod; 43. Housing; 44. First rotating rod; 45. First rotating plate; 46. Second rotating plate; 47. First opening; 48. Second rotating rod; 49. Third drive motor; 50. Third driven gear; 51. Second opening; 52. Drive gear; 53. Transmission rod; 54. First driven gear; 55. Second driven gear; 56. Movable cavity; 57. Connecting bar; 58. Moving block; 59. Fourth electric telescopic mechanism; 60. Servo motor; 61. Tensioning roller; 62. Moving plate; 63. Pressure roller; 64. Fan. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1

[0042] Please see Figures 1-15 An automatic cutting device based on a vision recognition system includes a machine tool 1, a conveyor belt 2 on the machine tool 1, and first drive motors 3 threadedly mounted on both sides of the machine tool 1. The output ends of the two first drive motors 3 are each connected to a first lead screw 17 via a coupling. A first movable block 13 is threadedly connected to the first lead screw 17. A sliding groove 18 is provided on the side wall of the machine tool 1 above the first lead screw 17. A second movable block 19 is slidably disposed in the sliding groove 18. A movable plate 8 is welded between the first movable block 13 and the second movable block 19 on both sides. A displacement component is provided on the movable plate 8. Several frames 4 are arranged on the outside of the machine tool 1.

[0043] Furthermore, a pulley is provided at the bottom of frame 4, and the pulley has a self-locking structure (not shown in the figure). In particular, the self-locking structure includes a pin located on the outside of the pulley, which locks the pulley by engaging with the pulley.

[0044] The displacement assembly includes mounting plates 11 welded to both sides of the movable plate 8. A second drive motor 12 is threadedly fixed to one of the mounting plates 11. The movable plate 8 is threadedly fitted with a groove 25, a protective frame 14, and a slide rail 10. The groove 25 and the slide rail 10 are located on both sides of the movable plate. The protective frame 14 is located between the groove 25 and the slide rail 10. A second lead screw 27 is mounted on the output shaft end of the second drive motor 12 via a coupling. A fixing block 32 is threadedly mounted on the second lead screw 27, and a movable box 15 is threadedly mounted on the fixing block 32. A laser cutter 16 is provided at one end of the movable box 15, extending to the outside of the movable plate 8. A fixing plate 29 is threadedly mounted on the bottom of the movable box 15, extending to both sides of the slide rail 10. A rotating shaft is mounted between the fixing plates 29 via a coupling. A rotating wheel 30 that abuts against the slide rail 10 is sleeved on the rotating shaft.

[0045] The inside of the groove 25 is a cable chain 24. A slot 28 is provided on one side of the movable box 15. The other end of the cable chain 24 extends into the inside of the movable box 15 through the slot 28 and is fixed by threads.

[0046] A base plate 37 is threadedly installed at the bottom of the movable plate 8. A first electric telescopic mechanism 23 is symmetrically arranged on both sides of the lower surface of the base plate 37. A pressure block 22 is threadedly connected to the end of the first electric telescopic mechanism 23. Several vertical rods 21 are arranged on both sides of the pressure block 22 on the base plate 37. A vertical groove 26 is opened on the outer side of the pressure block 22 corresponding to the vertical rod 21. A movable baffle 33 is hinged to the side of the vertical rod 21 near the vertical groove 26. A spring 34 is fixedly installed at the bottom of the movable baffle 33. The other end of the spring 34 is fixedly connected to the surface of the vertical rod 21 near the vertical groove 26.

[0047] Furthermore, the movable baffle 33 extends to the bottom of the pressure block 22, and the length of the movable baffle 33 is greater than the depth of the vertical groove 26. A gap is left between the bottom of the vertical rod 21 and the conveyor belt 2, and a pressure sensor is installed at the bottom of the pressure block 22.

[0048] An extension plate 9 is welded to one side of the movable plate 8. A second electric telescopic mechanism 36 is threaded onto the extension plate 9. A positioning plate 35 is threaded onto the end of the second electric telescopic mechanism 36 extending to the bottom of the extension plate 9.

[0049] Several cameras 5 are provided on the top of the frame 4, and a tensioning assembly is provided above the machine tool 1 on the frame 4. The tensioning assembly includes through slots 39 symmetrically opened on the frame 4. A slider 40 is slidably arranged in the through slots 39. A third electric telescopic mechanism 38 is threadedly installed on both sides of the frame 4. The end of the third electric telescopic mechanism 38 is threadedly fixed to the slider 40.

[0050] A connecting rod 41 is welded between the two sliders 40. The connecting rod 41 is hollow inside. Two sleeves 42 are fitted on the connecting rod 41. First openings 46 are opened on both sides of the sleeves 42. A second rotating rod 47 is installed inside the first opening 46 through a coupling. A connecting frame 31 is welded on both sides of the sleeves 42. A first rotating rod 43 is installed in the middle of the connecting frame 31 through a coupling. A first rotating plate 44 is fitted on the first rotating rod 43. A second rotating plate 45 is hinged to the end of the first rotating plate 44 away from the sleeve 42.

[0051] In particular, the bottom of the second rotating plate 45 is provided with an anti-slip pad.

[0052] Furthermore, a third drive motor 48 is installed inside the connecting rod 41 via a connecting rod. A second opening 50 is opened on the surface of the connecting rod 41 corresponding to the first opening 46. The output shaft of the third drive motor 48 extends to the second opening 50 and is fitted with a drive gear 51. A transmission rod 52 is hinged inside the connecting rod 41. A first driven gear 53 that meshes with the drive gear 51 is fitted on the transmission rod 52. A second driven gear 54 that meshes with the first driven gear 53 is provided on the second rotating rod 47. At the same time, a third driven gear 49 that meshes with the second driven gear 54 is provided on the first rotating rod 43.

[0053] The machine tool 1 has protrusions 20 on both sides, which are higher than the table surface of the machine tool 1. The first movable block 13 and the second movable block 19 extend above the protrusions 20. The height of the protrusions 20 is greater than the thickness of the base plate 37. Several support feet 6 are welded to the bottom of the machine tool 1. Several limit plates 7 are threaded on both sides of the machine tool 1. The limit plates 7 are L-shaped.

[0054] Working principle:

[0055] When in use, this device transports the fabric via conveyor belt 2. After the fabric moves above the machine tool 1, the camera 5 mounted on the frame 4 captures images of the fabric on the conveyor belt 2 entering the machine tool 1 and analyzes the surface condition. At the same time, two first drive motors 3 drive different first lead screws 17, which in turn move the first movable block 13. The second movable block 19 is guided by the sliding groove 18 and only serves a supporting function. The two first movable blocks 13 and the two second movable blocks 19 drive the movable plate 8 to reciprocate along the length of the machine tool 1.

[0056] The second drive motor 12 drives the second lead screw 27 for transmission. The second lead screw 27 drives the fixed block 32 to move the movable box 15 left and right. At the same time, the bottom of the movable box 15 rolls on the slide rail 10 through the fixed plate 29 and the rotating wheel 30, which bears the lateral force and reduces friction, further driving the laser cutter 16 to move in position. The drag chain 24 is responsible for moving the laser cable, air pipe, signal line, etc. laterally and flexibly along with the movable box. The movable box 15 and the laser cutter 16 move on the machine tool 1 through the cooperation of the first drive motor 3 and the second drive motor 12.

[0057] During the laser cutting process, the fabric is positioned and tensioned to improve the cutting accuracy. The second electric telescopic machine 36 drives the positioning plate 35 to contact the fabric on the conveyor belt 2 for positioning, which makes it easier to determine the cutting area.

[0058] The first electric telescopic mechanism 23 set on both sides of the base plate 37 below the movable plate 8 drives the pressure block 22 to move down, pressing down the fabric located below the two pressure blocks 22 on the movable plate 8. During the downward movement of the pressure block 22, the movable baffle 33 that lifts the pressure block 22 is deflected. The movable baffle 33 deflects and rotates downward. When the pressure block 22 moves to contact the fabric, the bottom of the movable baffle 33 moves into the interior of the vertical groove 26, and there is a distance between the bottom of the movable baffle 33 and the fabric. The pressure sensor installed at the bottom of the pressure block 22 contacts the fabric. At this time, the tensioning component is controlled to work by the external control unit.

[0059] The third electric telescopic mechanism 38 drives the slider 40 to move, which in turn drives the connecting rod 41 to rise and fall as a whole. The third drive motor 48 drives the active gear to rotate the first driven gear and the second driven gear, which in turn drives the first rotating plate 44 to deflect towards the fabric. The first rotating plate 44 deflects downward, and the second rotating plate 45, which is hinged at its end, follows the first rotating plate 44 to deflect downward. The end of the second rotating plate 45 away from the first rotating plate 44 contacts the fabric surface. As the first rotating plate 44 continues to deflect, the lower surface of the second rotating plate 45 is in complete contact with the fabric. At this time, the first rotating plate 44 continues to rotate, which drives the second rotating plate 45 to pull the fabric backward, thus achieving the tensioning of the fabric. The pressure block 22 and the second rotating plate 45 fix and tension the fabric, making it easier for the laser cutter 16 to cut.

[0060] The fabric has anisotropic elasticity. When the pressure block 22 and the pressing second rotating plate 45 tension the fabric, the fabric stretches towards the outside of the movable plate 8 and the second rotating plate 45. After the laser cutting is completed, the tension is released and the fabric rebounds, which may cause the final cut part size to deviate from the design size.

[0061] After the fabric is fed onto the machine tool 1, the camera 5 establishes a coordinate model and collects all data on the fabric surface. At the same time, the preset shape and pattern to be cut are imported to the control terminal from the outside. A laser generator is set on the top of the frame 4. The laser generator is used to position the shape and pattern and the size of the fabric. The laser cutter 16 performs the cutting operation according to the positioning.

[0062] Before cutting the fabric, the position of the laser cutter 16 is adjusted by the first drive motor 3 and moved to the positioning point. At this time, the first electric telescopic motor 23 set at the bottom drives the pressure block 22 to fix the fabric at the bottom of the movable plate 8. The pressure block 22 is pressed down until the touch sensor detects contact with the fabric. At this time, the position is recorded and pressure control is switched. The first electric telescopic motor 23 is slowly driven to move the pressure block 22 downward, increasing the downward pressure of the pressure block 22 until the value preset by the system is reached (the value is the optimal pressure parameter for cutting the fabric).

[0063] At this point, the fabric is pulled backward by making full contact with the lower surface of the second rotating plate 45, and the condition of the fabric is observed.

[0064] At this time, the top camera 5 collects the status of the fabric. If the fabric between the pressure block 22 and the second rotating plate 45 wrinkles and bulges towards the side closer to the second rotating plate 45, it proves that the fabric is not fully tensioned. At this time, the pressure between the bottom of the pressure block 22 and the fabric is too small to provide enough static pressure to limit the fabric. The fabric is pulled by the second rotating plate 45 and slides to one side of the second rotating plate 45, affecting the cutting operation of the laser cutter 16.

[0065] Furthermore, if the fabric itself has a thickness difference, the sensor at the bottom of the pressure block 22 presses on the fabric, and the sensor readings are different, causing the pressure applied by the pressure block 22 to the fabric to be lower than the preset value, which in turn leads to incomplete tension and fixation, affecting the cutting effect.

[0066] If camera 5 detects that the fabric at the edge of the pressure block 22 is excessively stretched and deformed, it proves that the pressure block 22 is applying too much pressure to the fabric. This will cause the cutting line in the cutting area to deform, affecting the normal cutting operation.

[0067] Therefore, after the pressure block 22 and the second rotating plate 45 are fixed, a second visual positioning is performed through the camera 5 to photograph specific marking points on the fabric again. These marking points can be the pattern features of the fabric itself or pre-printed positioning marks. The cutting points are adjusted by comparing with the first positioning. The control system calculates the deviation between the position of the marking point recognized the second time and the position when it was recognized the first time. Then, the same coordinate transformation is performed on the preset cutting path to generate a brand new cutting path that perfectly matches the current tensioned fabric shape, so as to avoid errors in the cutting process that would lead to a deterioration in the cutting effect.

[0068] Example 2

[0069] Further reference Figures 16-21 The frame 4 is equipped with fans 63 on both sides of the machine tool 1. The fans 63 are positioned facing the conveyor belt 2. The fans 63 are used to blow away the surface cutting waste after cutting. The two ends of the protrusion 20 of the machine tool 1 are threaded with electric push rods. The ends of the electric push rods are connected by a coupling and a pressure roller 62 is installed. The position of the pressure roller 62 is adjustable and is used to press the two ends of the fabric on the machine tool 1 to prevent the fabric from rolling up when blowing air.

[0070] Define the first cropping area as 'a' and the second cropping area as 'b'.

[0071] refer to Figure 19 After the blower removes the cutting waste, if a second cutting is required, the fabric surface already has cutting marks. When further cutting the fabric, the deformation of the already cut area needs to be considered. After the first cutting, there are cuts on the fabric. When the equipment needs to process these fabrics again, such as cutting another pattern inside or trimming, the existing tensioning method between the laser cutter 16 and the second rotating plate 45 will cause the existing cuts to deform due to pulling on these cuts, affecting the dimensional tolerances of the parts processed in the first processing and resulting in scrap. At the same time, the area to be processed in the second processing may experience unpredictable displacement and deformation due to tearing of the surrounding cuts, resulting in inaccurate positioning for the second cutting and further affecting the cutting effect.

[0072] An active cavity 55 is provided on the side of the base plate 37 near the laser cutter 16. A movable block 57 is slidably arranged inside the active cavity 55. A connecting strip 56 is welded on the movable block 57 and is welded to the outer shell of the laser cutter 16 through the connecting strip 56. A fourth electric telescopic mechanism 58 is threadedly fixed on the movable block 57. The end of the fourth electric telescopic mechanism 58 extends to the lower part of the movable block 57 and a movable plate 61 is threadedly installed. A servo motor 59 is welded on one side of the movable plate 61. A tension roller 60 is sleeved on the output shaft of the servo motor 59. Several protrusions are provided on the surface of the tension roller 60.

[0073] When the secondary cutting is performed, the camera 5 set at the top of the frame 4 collects information on the fabric surface, divides the primary cutting area and the secondary cutting area, accurately identifies the precise position, direction and length of all existing cutting marks through the images, and marks them through a laser generator.

[0074] Furthermore, the fabric at the bottom of the movable plate 8 is pressed by the pressure block 22, and the laser cutter 16 is moved by the movement of the movable box 15, which in turn moves the moving block 57 laterally. The laser cutting area is adjusted by the lateral movement of the moving block 57. After the laser cutting area is determined, the moving plate 61 is moved downward by the fourth electric telescopic machine 58, so that the tension roller 60 comes into contact with the fabric. The tension roller 60 is rotated to both sides by the servo motor 59, thereby tensioning the fabric in the area to be cut, so that the laser cutter 16 can cut it.

[0075] refer to Figure 20 This avoids deformation and damage to the first cutting area caused by the second rotating plate 45 pulling the fabric. At the same time, the two tensioning rollers 60 tension the fabric on both sides of the second cutting area to ensure that there are no wrinkles in the fabric in the cutting area.

[0076] Further reference Figure 21 If the pressure block 22 is used to fix the area that has already been cut, since the area that has been cut coincides with the conveyor belt 2, if the pressure block 22 and the second rotating plate 45 come into contact with the area that has been cut during the process of cutting the secondary cutting area, and if one pressure block 22 at the bottom of the movable plate 8 comes into contact with the area that has not been cut, while the other pressure block 22 coincides with the area that has been cut, then the area below the area that has been cut is empty (in contact with the conveyor belt 2), and the pressure block 22 will continue to press down. The pressure block 22, which has lost the support of the fabric, will cause its pressure sensor to fail to reach the preset value, causing the first electric telescopic machine 23 to continue to press down until the mechanical limit is reached.

[0077] At this point, the fabric in the uncut area is excessively squeezed and deformed due to excessive pressure on one side, affecting the shape of the fabric in the uncut area and causing defects in the overall cutting operation. At the same time, if the pressure block 22 located above the primary cutting area is still in contact with part of the fabric on both sides, excessive pressure will also cause the fabric at the edge of the primary cutting area to be excessively squeezed, affecting the overall cutting effect.

[0078] Therefore, if the cutting area is set as a non-contact area, and the projection area of ​​a pressure block 22 is completely on the intact fabric, the pressing procedure is executed normally until the preset pressure value is reached.

[0079] If the projected area of ​​a pressure block 22 overlaps with an existing cut area, the first drive motor 3 is controlled to fine-tune the position of the movable plate 8 on the machine tool 1 so that the pressure block 22 completely avoids the cut and falls into the solid material area.

[0080] Furthermore, if it cannot be completely avoided (e.g., the cut area is too large), the first electric telescopic mechanism 23 above the pressure block 22 controls the pressure block 22 to press down a fixed, safe stroke (this stroke is equal to or slightly less than the average thickness of the fabric), so that it gently contacts the fabric and provides limited friction, while avoiding excessive pressing due to suspension.

[0081] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0082] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0083] The above description is merely 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic cutting device based on a visual recognition system, characterized in that, The machine tool (1) is equipped with a conveyor belt (2). First drive motors (3) are installed on both sides of the machine tool (1). First lead screws (17) are installed at the output ends of the two first drive motors (3). First movable blocks (13) are connected to the first lead screws (17). A sliding groove (18) is provided on the side wall of the machine tool (1) above the first lead screws (17). A second movable block (19) is slidably disposed within the sliding groove (18). Movable plates (8) are welded between the first movable blocks (13) and the second movable blocks (19) on both sides. Displacement components are provided on the movable plates (8). Several frames (4) are arranged on the outer side of the machine tool (1). The machine tool (1) also includes: The displacement assembly includes mounting plates (11) fixedly disposed on both sides of the movable plate (8). The mounting plates (11) are provided with a groove (25), a protective frame (14) and a slide rail (10). A second drive motor (12) is threadedly fixed on one of the mounting plates (11). A movable box (15) is movably mounted on the output shaft of the second drive motor (12). A laser cutter (16) is disposed on the movable box (15). The frame (4) is provided with several cameras (5). The frame (4) is located above the machine tool (1) and is provided with a tensioning assembly. The tensioning assembly includes through slots (39) symmetrically opened on the frame (4). A slider (40) is slidably arranged in the through slot (39). A third electric telescopic mechanism (38) is threadedly installed on both sides of the frame (4). The end of the third electric telescopic mechanism (38) is threadedly fixed to the slider (40). A connecting rod (41) is fixedly installed between the sliders (40). A first rotating plate (44) and a second rotating plate (45) are movably arranged on the connecting rod (41). The bottom of the movable plate (8) is equipped with a base plate (37). The lower surface of the base plate (37) is symmetrically provided with a first electric telescopic mechanism (23). The end of the first electric telescopic mechanism (23) is threadedly connected with a pressure block (22). The base plate (37) is provided with a number of vertical rods (21) on both sides of the pressure block (22). The outer side of the pressure block (22) is provided with a vertical groove (26) corresponding to the vertical rod (21). The side of the vertical rod (21) near the vertical groove (26) is hinged with a movable baffle (33). The bottom of the movable baffle (33) is fixedly provided with a spring (34). The other end of the spring (34) is fixedly connected to the side surface of the vertical rod (21) near the vertical groove (26). A pressure sensor is installed at the bottom of the pressure block (22); The protective frame (14) is disposed between the groove (25) and the slide rail (10). The output shaft end of the second drive motor (12) is equipped with a second lead screw (27) through a coupling. A fixing block (32) is installed on the second lead screw (27). The fixing block (32) is fixedly connected to the movable box (15). The laser cutter (16) extends to the outside of the movable plate (8). A fixing plate (29) is threaded on the bottom of the movable box (15). The fixing plate (29) extends to both sides of the slide rail (10). A rotating shaft is installed between the fixing plates (29) through a coupling. A rotating wheel (30) that abuts against the slide rail (10) is sleeved on the rotating shaft.

2. The automatic cutting device based on a visual recognition system according to claim 1, characterized in that, An extension plate (9) is welded to one side of the movable plate (8), and a second electric telescopic mechanism (36) is threaded onto the extension plate (9). The end of the second electric telescopic mechanism (36) extends to the bottom of the extension plate (9) and a positioning plate (35) is threaded onto it.

3. The automatic cutting device based on a visual recognition system according to claim 1, characterized in that, The connecting rod (41) is hollow inside. Two sleeves (42) are fitted on the connecting rod (41). The sleeves (42) have first openings (46) on both sides. A second rotating rod (47) is installed inside the first opening (46) through a coupling. A connecting frame (31) is welded on both sides of the sleeve (42). A first rotating rod (43) is installed in the middle of the connecting frame (31) through a coupling. A first rotating plate (44) is fitted on the first rotating rod (43). A second rotating plate (45) is hinged to the end of the first rotating plate (44) away from the sleeve (42).

4. The automatic cutting device based on a visual recognition system according to claim 3, characterized in that, The connecting rod (41) is equipped with a third drive motor (48) via a connecting rod. The surface of the connecting rod (41) is provided with a second opening (50) corresponding to the first opening (46). The output shaft of the third drive motor (48) extends to the second opening (50) and is fitted with a drive gear (51). The connecting rod (41) is hinged with a transmission rod (52). The transmission rod (52) is fitted with a first driven gear (53) that meshes with the drive gear (51). The second rotating rod (47) is provided with a second driven gear (54) that meshes with the first driven gear (53). The first rotating rod (43) is provided with a third driven gear (49) that meshes with the second driven gear (54).

5. An automatic cutting device based on a visual recognition system according to claim 4, characterized in that, The machine tool (1) has protrusions (20) on both sides. The protrusions (20) are set above the table of the machine tool (1). The first movable block (13) and the second movable block (19) both extend above the protrusions (20).

6. An automatic cutting device based on a visual recognition system according to claim 5, characterized in that, The bottom of the frame (4) is provided with a pulley with a self-locking structure, and several limiting plates (7) are provided on both sides of the machine tool (1).

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