Numerical control laser cutting machine for metal material processing

Abstract

The application relates to the technical field of numerical control laser cutting machines, in particular to a numerical control laser cutting machine for metal material processing, which comprises a machine tool, a portal frame is slidably connected to the machine tool, a laser cutting head is slidably connected to the portal frame, an installation groove is formed in the machine tool, a plurality of toothed plates are fixed in the installation groove, and the numerical control laser cutting machine further comprises support plates, the support plates are arranged in the installation groove, the support plates are multiple, the support plates are arranged at gap positions between adjacent toothed plates, the support plates have support surfaces and shielding surfaces, the shielding surfaces face upwards, and the support surfaces face downwards. By switching the point support of the plate into the surface support, the surface support can make the plate bear force more evenly, is favorable for avoiding the bending deformation of the thin plate due to the uneven local force when the plate is blanked, protects the micro connection reserved during cutting from being broken, and thus improves the overall support stability of the plate during the blanking process.

Description

Technical Field

[0001] This invention relates to the field of CNC laser cutting machines, and more particularly to a CNC laser cutting machine for metal material processing. Background Technology

[0002] During laser cutting, if the finished product is small, such as a small disc, it will fall into the gap between adjacent toothed plates after being cut from the sheet metal, which is troublesome to collect later. To avoid this trouble, existing technology leaves a micro-connection between the finished product and the sheet metal during cutting, thereby preventing material from falling out.

[0003] While this method can solve the problem of parts falling off, the micro-connections are quite fragile, especially on thin plates. During the subsequent cutting of the entire sheet, the sheet is prone to bending and deformation, which can easily cause the micro-connections to break. After the micro-connections break, some parts will still fall into the gaps of the toothed plates. On the one hand, they are prone to sticking with molten slag, and on the other hand, they are difficult to handle and collect. It can be seen that there is still a lot of room for improvement in the cutting direction of existing laser cutting machines. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a CNC laser cutting machine for metal material processing.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a CNC laser cutting machine for metal material processing, comprising a machine tool, a gantry frame slidably connected to the machine tool, a laser cutting head slidably connected to the gantry frame, a mounting groove provided on the machine tool, and multiple toothed plates fixed in the mounting groove, and further comprising:

[0006] A support plate is disposed in a mounting groove. Multiple support plates are disposed in the gap between adjacent toothed plates. Each support plate has a supporting surface and a shielding surface, with the shielding surface facing upward and the supporting surface facing downward.

[0007] A sliding block is vertically slidably connected to the inner wall of the mounting groove. The sliding block is symmetrically arranged at both ends of the support plate. The sliding block is rotatably connected to the support plate. A rotating component is provided inside the sliding block. The rotating component is used to drive the support surface of the support plate to flip upward when the support plate rises.

[0008] A pushing component is disposed at the bottom of the mounting slot, and the pushing component is used to push the sliding block upward.

[0009] Specifically, during the cutting process, the plate is supported by a toothed plate, which provides point support and facilitates the falling of molten slag during the cutting process. Then, the gantry and laser cutting head are moved by the drive device on the machine tool to cut the plate. This is existing technology and will not be elaborated on here.

[0010] During the cutting process, the shielding surface of the support plate faces upward and the supporting surface faces downward, thereby preventing the molten metal slag from contacting the supporting surface during the cutting process and affecting the flatness of the supporting surface.

[0011] After cutting, the gantry is first moved to one end of the machine tool, away from the plate to be cut. Then, the sliding block is pushed upward by activating the push assembly. Since the support plate and the sliding block are connected, the support plate is moved upward by the two sliding blocks. During the movement, the support plate is driven to rotate by the rotation assembly, so that the support surface of the support plate rotates upward. As the support plate continues to rise, it supports the bottom of the plate and lifts it up, separating it from the toothed plate, switching from point support to surface support. Finally, the external push device pushes the plate horizontally away from the machine tool.

[0012] This invention replaces point support with surface support for the sheet material. Surface support allows for more uniform stress distribution on the sheet material, which helps prevent bending deformation of thin sheets during cutting due to uneven local stress. It also protects the micro-connections left during cutting from breaking, thereby improving the overall support stability of the sheet material during the cutting process. This facilitates the smooth pushing of the sheet material away from the machine tool during subsequent cutting processes, thus improving cutting efficiency and the convenience of finished product collection.

[0013] Preferably, the pushing assembly includes a pushing plate, one end of which is threadedly connected to a first screw, the bottom end of which is provided with a first motor, which is fixed to the inner wall of the mounting groove, the output shaft of which is fixed to the bottom of the first screw, the top end of which is rotatably connected to the machine tool, the other end of which is slidably inserted with a guide rod, both ends of which are fixed to the machine tool, and the pushing plate and the sliding block are connected by an electromagnetic mechanism.

[0014] Preferably, the electromagnetic mechanism includes an electromagnet, the push plate has a slot, the sliding block is inserted into the slot, the electromagnet is fixed to the inner wall of the slot, and the sliding block is made of ferromagnetic material.

[0015] Specifically, first, the electromagnet is activated, which attracts and fixes the corresponding sliding block, making the sliding block and the push plate a whole. By electromagnetically connecting the sliding block and the push plate, in the scenario of cutting multiple plates at the same time, by controlling the connection between the corresponding sliding block and the push plate, part of the support plate is pushed up to support a single plate independently, realizing independent cutting of a single plate without the need for overall cutting, which is beneficial to improving the cutting effect.

[0016] Then, the first motor is started, which drives the first screw to rotate. The first screw is threadedly connected to the push plate, while the guide rod is slidably connected to the push plate. The guide rod restricts the push plate from rotating with the first screw, so that the push plate can be driven to move vertically along the screw through the threaded connection. The push plate drives the sliding block and the support plate to move as a whole, thus completing the pushing function.

[0017] Preferably, the rotating assembly includes a vertical groove formed on the side wall of the sliding block, a rack inserted in the vertical groove, the rack being fixed to the inner wall of the mounting groove, and a gear meshing on one side of the rack, the gear being sleeved and fixed on the rotating shaft of the support plate.

[0018] Specifically, as the sliding block moves upward, the support plate and gear move synchronously with the sliding block. Under the meshing action of the gear and rack, the gear rotates on the rack, thereby driving the support plate to flip, so that the shielding surface of the support plate flips downward and the supporting surface flips upward. Then, the gear disengages from the rack and stops driving the support plate. Through the gear and rack cooperation, the support plate is driven to flip, eliminating the need for an independent motor, which helps to reduce equipment costs.

[0019] Preferably, two guide strips are fixed on the side wall of the mounting groove, the guide strips are positioned above the rack, and two guide grooves are formed on the side wall of the support plate, the guide grooves are located directly below the guide strips, and the end of the guide groove near the support surface has a guide slope.

[0020] Preferably, the support plate has grooves on both sides, and sliders are slidably connected in both grooves. A second motor is fixed in one of the grooves, and a second screw is fixed to the end of the output shaft of the second motor. The end of the second screw is rotatably connected to the inner wall of the groove. The second screw is threadedly connected to one of the sliders. Support rods are rotatably connected to the side walls of both sliders. A scraper is fixed to the top of both support rods. The support rods are inclined. A first torsion spring is sleeved on the rotation shaft of the support rod. One end of the first torsion spring is fixed to the support rod, and the other end of the first torsion spring is fixed to the slider. A first baffle is provided on one side of the support rod and fixed to the side wall of the slider. A clearance groove is provided at the end of the support surface.

[0021] Preferably, the scraper includes a scraping part and a guiding part, the scraping part and the guiding part are integrally formed and are L-shaped, the guiding part is horizontally fixed to the end of the support rod, the scraping part is inclinedly disposed at the end of the guiding part, and the surface of the guiding part has a collection groove.

[0022] Preferably, the support rod includes two fixed rods, and an arc-shaped elastic sheet is fixed between the two fixed rods. A vibration assembly is provided between the fixed rods and the inner wall of the groove. The vibration assembly includes a support frame, which is fixed to the top of the slider. A sliding rod is slidably inserted on the support frame. A push plate is fixed to one end of the sliding rod, and a fixed plate is fixed to the other end of the sliding rod. A limit plate is rotatably connected to the fixed plate. A second torsion spring is sleeved on the rotation shaft of the limit plate. One end of the second torsion spring is fixed to the fixed plate, and the other end of the second torsion spring is fixed to the limit plate. A second baffle is fixed to the fixed plate. A toothed plate is fixed to the inner wall of the groove. An inclined surface is formed on the side of the limit plate away from the second baffle.

[0023] Preferably, a support cylinder is fixed to the side wall of each of the two sliders. A pressure sensor is fixed inside the support cylinder. A spring is fixed to the top of the pressure sensor. A movable rod is fixed to the top of the spring. The movable rod is inserted into the support cylinder. A roller is rotatably connected between the two movable rods. The pressure sensor is used to detect the flatness of the bottom of the plate. A controller is fixed to one side of the machine tool. A strip groove is opened on the support surface. A flexible support component is inside the strip groove. When the bottom of the plate is uneven, the controller is used to control the flexible support component to rise.

[0024] Preferably, the flexible support assembly includes a flexible plate inserted into a strip groove, a sliding strip fixed to the bottom of the flexible plate, an electric actuator fixed to the inner wall of the strip groove, and the movable end of the electric actuator fixed to the bottom of the sliding strip.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] I. This invention replaces point support with surface support for the sheet material. Surface support allows the sheet material to be subjected to more uniform force, which helps to prevent bending deformation of thin sheets during material cutting due to uneven local force. It also protects the micro-connections left during cutting from breaking, thereby improving the overall support stability of the sheet material during the material cutting process. This makes it easier to push the sheet material away from the machine tool smoothly during subsequent material cutting, thereby improving material cutting efficiency and the convenience of finished product collection.

[0027] Second, by cleaning the scum on the bottom surface of the plate before the support plate comes into contact with the plate, the present invention helps to ensure the uniformity of subsequent support and avoid plate deformation, which could lead to micro-connection breakage.

[0028] 3. After the sheet material is cut, the scraper needs to be controlled to retract. When it retracts to the toothed plate position, the limiting plate contacts the teeth, and the teeth contact the inclined surface on the limiting plate. Under the guidance of the inclined surface, the limiting plate drives the fixed plate, sliding rod, and pushing plate to move towards the side closer to the fixed plate, pushing the fixed plate to move. The elastic sheet between the two fixed plates deforms. When the limiting plate disengages from the teeth, under the elastic force of the elastic sheet, it drives the pushing plate, sliding rod, fixed plate, and limiting plate to reset. This process is repeated, so that the fixed plate and scraper as a whole vibrate. The vibration can promote the removal of impurities on the scraper from the collection tank. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention.

[0031] Figure 3 This is a schematic diagram of the sliding block, rack, and gear structure of the present invention.

[0032] Figure 4 This is a schematic diagram of the cross-sectional structure of the machine tool according to the present invention.

[0033] Figure 5 This is a schematic diagram of the support plate structure of the present invention.

[0034] Figure 6 This is a schematic cross-sectional view of the support plate structure of the present invention.

[0035] Figure 7 This is a schematic diagram of the support frame, fixing plate, and limiting plate structure of the present invention. Figure 1 .

[0036] Figure 8 This is a schematic diagram of the support frame, fixing plate, and limiting plate structure of the present invention. Figure 2 .

[0037] In the diagram: 1. Machine tool; 2. Gantry frame; 3. Laser cutting head; 4. Mounting slot; 5. Gear plate; 6. Support plate; 601. Support surface; 602. Covering surface; 7. Sliding block; 8. Push plate; 9. First screw; 10. First motor; 11. Guide rod; 12. Electromagnet; 13. Slot; 14. Vertical slot; 15. Rack; 16. Gear; 17. Guide bar; 18. Guide groove; 19. Groove; 20. Slider; 21. Second motor; 22. Second screw; 23. Support rod; 24. Scraper; 25. First 26. Torsion spring; 27. First baffle; 28. Clearance groove; 29. ​​Scraper; 30. Guide section; 31. Collection groove; 32. Fixing rod; 33. Elastic sheet; 34. Support frame; 35. Sliding rod; 36. Pushing disc; 37. Fixing plate; 38. Limiting plate; 39. Second torsion spring; 40. Second baffle; 41. Support cylinder; 42. Pressure sensor; 43. Spring; 44. Movable rod; 45. Roller; 46. Controller; 47. Strip groove; 48. Flexible plate; 49. Sliding bar; 50. Electric actuator; 51. Toothed plate. Detailed Implementation

[0038] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0039] like Figures 1 to 8 The CNC laser cutting machine for metal material processing shown includes a machine tool 1, a gantry frame 2 slidably connected to the machine tool 1, a laser cutting head 3 slidably connected to the gantry frame 2, a mounting groove 4 on the machine tool 1, and multiple toothed plates 5 fixed in the mounting groove 4. It also includes:

[0040] Support plate 6 is provided in mounting groove 4. There are multiple support plates 6. The support plates 6 are provided in the gap between adjacent toothed plates 5. The support plate 6 has a support surface 601 and a shielding surface 602. The shielding surface 602 faces upward and the support surface 601 faces downward.

[0041] Sliding block 7 is vertically slidably connected to the inner wall of the mounting groove 4. Sliding block 7 is symmetrically arranged at both ends of the support plate 6. Sliding block 7 is rotatably connected to the support plate 6. A rotating component is provided inside the sliding block 7. The rotating component is used to drive the support surface 601 of the support plate 6 to flip upward when the support plate 6 rises.

[0042] The push component is located at the bottom of the mounting slot 4 and is used to push the slider 7 upward.

[0043] Specifically, during the cutting process, the plate is supported by the toothed plate 5. The toothed plate 5 is a point support, which facilitates the falling of molten slag during the cutting process. Then, the gantry 2 and the laser cutting head 3 are moved by the drive device on the machine tool 1 to cut the plate. This is the existing technology and will not be described in detail here.

[0044] During the cutting process, the shielding surface 602 of the support plate 6 faces upward and the support surface 601 faces downward, thereby preventing the molten metal slag from contacting the support surface 601 during the cutting process and affecting the flatness of the support surface 601.

[0045] After the cutting is completed, the gantry 2 is first moved to one end of the machine tool 1, away from the plate to be cut. Then, the sliding block 7 is pushed upward by starting the push component. Since the support plate 6 and the sliding block 7 are connected to each other, the support plate 6 is driven to move upward by the two sliding blocks 7. During the movement, the support plate 6 is driven to rotate by the rotation component, so that the support surface 601 of the support plate 6 rotates upward. As the support plate 6 continues to rise, the support plate 6 supports the bottom of the plate and lifts the plate, separating it from the toothed plate 5, switching from point support to surface support. Finally, the plate is pushed horizontally away from the machine tool 1 by the external push device.

[0046] This invention replaces point support with surface support for the sheet material. Surface support allows for more uniform stress distribution on the sheet material, which helps prevent bending deformation of thin sheets during cutting due to uneven local stress. It also protects the micro-connections left during cutting from breaking, thereby improving the overall support stability of the sheet material during the cutting process. This facilitates the smooth and stable pushing of the sheet material away from the machine tool 1 during subsequent cutting processes, thereby improving cutting efficiency and the convenience of finished product collection.

[0047] As a further embodiment of the present invention, the pushing assembly includes a pushing plate 8, one end of which is threadedly connected to a first screw 9, the bottom end of which is provided with a first motor 10, which is fixed on the inner wall of the mounting groove 4, the output shaft of the first motor 10 is fixed to the bottom of the first screw 9, the top end of the first screw 9 is rotatably connected to the machine tool 1, and the other end of the pushing plate 8 is slidably inserted with a guide rod 11, both ends of which are fixed on the machine tool 1. The pushing plate 8 and the sliding block 7 are connected by an electromagnetic mechanism.

[0048] As a further embodiment of the present invention, the electromagnetic mechanism includes an electromagnet 12, a slot 13 is provided on the push plate 8, a sliding block 7 is inserted into the slot 13, the electromagnet 12 is fixed on the inner wall of the slot 13, and the sliding block 7 is made of ferromagnetic material.

[0049] Specifically, first, the electromagnet 12 is activated, and the corresponding sliding block 7 is attracted and fixed by the electromagnet 12, so that the sliding block 7 and the push plate 8 form a whole. By electromagnetically connecting the sliding block 7 and the push plate 8, in the scenario of cutting multiple plates at the same time, by controlling the connection between the corresponding sliding block 7 and the push plate 8, the support plate 6 is pushed up to support a single plate independently, so as to realize the independent feeding of a single plate without the need for overall feeding, which is beneficial to improving the cutting effect.

[0050] Then, the first motor 10 is started, which drives the first screw 9 to rotate. The first screw 9 is threadedly connected to the push plate 8, while the guide rod 11 is slidably connected to the push plate 8. The guide rod 11 restricts the push plate 8 from rotating with the first screw 9, so that the push plate 8 can be driven to move in the vertical direction of the screw through the threaded connection. The push plate 8 drives the sliding block 7 and the support plate 6 to move as a whole, thus completing the pushing function.

[0051] As a further embodiment of the present invention, the rotating assembly includes a vertical groove 14, which is formed on the side wall of the sliding block 7. A rack 15 is inserted into the vertical groove 14 and fixed to the inner wall of the mounting groove 4. A gear 16 is meshed on one side of the rack 15 and is sleeved and fixed on the rotating shaft of the support plate 6.

[0052] Specifically, during the upward movement of the sliding block 7, the support plate 6 and the gear 16 move synchronously with the sliding block 7. Under the meshing action of the gear 16 and the rack 15, the gear 16 rotates on the rack 15, thereby driving the support plate 6 to flip, so that the shielding surface 602 of the support plate 6 flips downward and the support surface 601 flips upward. Then, the gear 16 disengages from the rack 15 and stops driving the support plate 6. The support plate 6 is driven to flip through the cooperation of the gear 16 and the rack 15, without the need to install an independent motor, which helps to reduce equipment costs.

[0053] As a further embodiment of the present invention, two guide bars 17 are fixed on the side wall of the mounting groove 4. The guide bars 17 are positioned above the rack 15. Two guide grooves 18 are formed on the side wall of the support plate 6. The guide grooves 18 are located directly below the guide bars 17. The end of the guide groove 18 near the support surface 601 has a guide slope.

[0054] Specifically, after the gear 16 disengages from the rack 15, as the support plate 6 continues to move upward, the guide groove 18 on the side wall of the support plate 6 will contact the guide bar 17. The guide bar 17 enters the guide groove 18, thereby limiting the support plate 6 through the cooperation of the guide bar 17 and the guide groove 18, restricting the support plate 6 from continuing to rotate, thus ensuring that the support surface 601 always faces upward, ensuring the stability of the subsequent jacking support of the plate.

[0055] The guide groove 18 has a guide slope at its end. Even after the gear 16 disengages from the rack 15, the support plate 6 may be slightly tilted during movement due to mechanical vibration or other factors, causing the guide groove 18 and the guide bar 17 to shift at their docking positions. Since the guide slope enlarges the size of the guide groove 18, it facilitates the insertion of the guide bar 17 when there is a slight shift. The slope also has a guiding function. After the bottom of the guide bar 17 contacts the guide slope, the position of the support plate 6 can be automatically corrected under the guiding effect of the slope.

[0056] As a further embodiment of the present invention, the support plate 6 has grooves 19 on both sides, and sliders 20 are slidably connected in both grooves 19. A second motor 21 is fixed in one of the grooves 19. A second screw 22 is fixed to the end of the output shaft of the second motor 21. The end of the second screw 22 is rotatably connected to the inner wall of the groove 19. The second screw 22 is threadedly connected to one of the sliders 20. Support rods 23 are rotatably connected to the side walls of both sliders 20. A scraper 24 is fixed to the top of both support rods 23. The support rods 23 are in an inclined state. A first torsion spring 25 is sleeved on the rotation shaft of the support rod 23. One end of the first torsion spring 25 is fixed to the support rod 23, and the other end of the first torsion spring 25 is fixed to the slider 20. A first baffle 26 is provided on one side of the support rod 23. The first baffle 26 is fixed to the side wall of the slider 20. A clearance groove 27 is provided at the end of the support surface 601.

[0057] Specifically, during the laser cutting process, some dross may adhere to the bottom of the plate. If the dross is between the support plate 6 and the plate, it may cause the plate to deform when the support plate 6 supports the plate, resulting in the breakage of the micro-connection. In order to prevent the finished product from falling off, the pushing component in this invention has a two-stage pushing motion. The first stage of pushing is performed to create a cleaning gap between the support plate 6 and the plate. At this time, the scraper 24 contacts the bottom of the plate. Then, the second motor 21 is started, which drives the second screw 22 to rotate. The second screw 22 drives the slider 20 to move. The slider 20 drives the support rod 23 and the scraper 24 to move as a whole. During the movement, the scraper 24 can scrape and clean the dross on the bottom of the plate to prevent the dross from affecting the subsequent support effect.

[0058] In this process, under the obstruction of the first baffle 26, the support rod 23 is in an inclined state. If the scraper 24 encounters some stubborn slag that is difficult to scrape off, the support rod 23 can flip and make way under the obstruction of the slag, so that the scraper 24 can descend and get away from the stubborn slag position, avoiding mechanical jamming. Under the elastic force of the first torsion spring 25, after passing the stubborn slag, the support rod 23 can return to its original position, thereby driving the scraper 24 to re-contact the bottom of the plate and continue to scrape and clean the slag until it moves to the position of the relief groove 27 and stops moving. Finally, the second stroke is pushed, that is, the support plate 6 is pushed up, so that the support plate 6 contacts the bottom of the plate and supports the plate. During this process, the scraper 24 and the support rod 23 can rotate into the relief groove 27 to avoid obstructing the rise of the support plate 6.

[0059] This invention cleans the scum on the bottom surface of the plate before the support plate 6 comes into contact with the plate, which helps to ensure the uniformity of subsequent support and avoid plate deformation, which could lead to micro-connection breakage.

[0060] As a further embodiment of the present invention, the scraper 24 includes a scraping part 28 and a guiding part 29. The scraping part 28 and the guiding part 29 are integrally formed and are L-shaped. The guiding part 29 is horizontally fixed to the end of the support rod 23, and the scraping part 28 is inclinedly disposed at the end of the guiding part 29. The surface of the guiding part 29 has a collection groove 30.

[0061] Specifically, the scraping part 28 is made of flexible rubber, which reduces wear on the bottom of the plate during the scraping and cleaning process. The scraping part 28 is also tilted, which allows it to easily rotate with the support rod 23 when encountering difficult-to-clean slag. Furthermore, a collection groove 30 is provided in the guide part 29. The collection groove 30 can collect the scraped slag, preventing it from falling directly onto the support surface 601. When the support is reset after the support is completed, the support surface 601 will be flipped downwards, and the slag in the collection groove 30 can also be poured out, thus preventing the collection groove 30 from being full of slag. During the cutting process, most of the slag is blown away from the plate by high-pressure gas, and only a small amount of slag adheres, which will not cause the collection groove 30 to be full and cause slag to overflow.

[0062] As a further embodiment of the present invention, the support rod 23 includes two fixed rods 31, and an arc-shaped elastic sheet 32 ​​is fixed between the two fixed rods 31. A vibration assembly is provided between the fixed rods 31 and the inner wall of the groove 19. The vibration assembly includes a support frame 33, which is fixed to the top of the slider 20. A sliding rod 34 is slidably inserted on the support frame 33. A pusher disk 35 is fixed to one end of the sliding rod 34, and a fixed plate 36 is fixed to the other end of the sliding rod 34. A limiting plate 37 is rotatably connected to the fixed plate 36. A second torsion spring 38 is sleeved on the rotation shaft of the limiting plate 37. One end of the second torsion spring 38 is fixed to the fixed plate 36, and the other end of the second torsion spring 38 is fixed to the limiting plate 37. A second baffle 39 is fixed on the fixed plate 36. A toothed plate 50 is fixed on the inner wall of the groove 19. An inclined surface is provided on the side of the limiting plate 37 away from the second baffle 39.

[0063] Specifically, during the scraping process of the scraper 24, the support frame 33 moves with the slider 20. The support frame 33 drives the sliding rod 34, the fixed plate 36, and the limiting plate 37 to move synchronously. Under the elastic force of the second torsion spring 38, the limiting plate 37 always tends to flip towards the second baffle 39. Under the blocking action of the second baffle 39, the limiting plate 37 is in a straight position with the fixed plate 36. As the limiting plate 37 moves, it will contact the teeth on the toothed plate 50. Under the blocking action of the teeth, the limiting plate 37 can flip to make way, thereby avoiding the toothed plate 50 from hindering the movement of the limiting plate 37, the fixed plate 36, and the sliding rod 34.

[0064] After the sheet material is unloaded, the scraper 24 needs to be controlled to retract. When it retracts to the position of the toothed plate 50, the limiting plate 37 contacts the teeth, and the teeth contact the inclined surface on the limiting plate 37. Under the guidance of the inclined surface, the limiting plate 37 drives the fixed plate 36, the sliding rod 34, and the pushing plate 35 to move closer to the fixed plate 36, pushing the fixed plate 36 to move. The elastic sheet 32 ​​between the two fixed plates 36 deforms. When the limiting plate 37 disengages from the teeth, under the elastic force of the elastic sheet, it drives the pushing plate 35, the sliding rod 34, the fixed plate 36, and the limiting plate 37 to reset. This process is repeated, so that the fixed plate 36 and the scraper 24 vibrate as a whole. The vibration can promote the removal of impurities on the scraper 24 from the collection tank 30.

[0065] As a further embodiment of the present invention, a support cylinder 40 is fixed on the side wall of each of the two sliders 20. A pressure sensor 41 is fixed inside the support cylinder 40. A spring 42 is fixed on the top of the pressure sensor 41. A movable rod 43 is fixed on the top of the spring 42. The movable rod 43 is inserted into the support cylinder 40. A roller 44 is rotatably connected between the two movable rods 43. The pressure sensor 41 is used to detect the flatness of the bottom of the plate. A controller 45 is fixed on one side of the machine tool 1. A strip groove 46 is opened on the support surface 601. The inside of the strip groove 46 has a flexible support component. When the bottom of the plate is uneven, the controller 45 is used to control the flexible support component to rise.

[0066] The flexible support assembly includes a flexible plate 47, which is inserted into a strip groove 46. A sliding strip 48 is fixed to the bottom of the flexible plate 47. An electric actuator 49 is fixed to the inner wall of the strip groove 46, and the movable end of the electric actuator 49 is fixed to the bottom of the sliding strip 48.

[0067] Specifically, during the sliding movement, the front end scrapes off the scum using the scraper 24, while the rear support cylinder 40 rolls at the bottom of the board to monitor the flatness of the board bottom. When encountering an uneven area at the bottom of the board, the roller 44 presses down on the movable rod 43, which in turn presses down on the spring 42, squeezing the pressure sensor 41. The pressure sensor 41 detects an increase in pressure value. When the pressure value exceeds the preset pressure value, it is determined that the bottom of the board is uneven. Furthermore, since the descent distance of the movable rod 43 varies, the pressure detected by the pressure sensor 41 varies accordingly. Thus, the descent distance of the movable rod 43 can be determined by the pressure value, which in turn determines the protrusion distance of the impurity. The controller 45 then controls the flexible support to rise, with the rising distance equal to the protrusion distance of the impurity. This allows the flexible support to support the bottom of the board, which helps to avoid uneven stress on the board caused by the protrusion of impurities at the bottom, further improving the stability of the board feeding.

[0068] Working principle: During the cutting process, the plate is supported by the toothed plate 5. The toothed plate 5 is a point support, which facilitates the falling of molten slag during the cutting process. Then, the drive device on the machine tool 1 drives the gantry 2 and the laser cutting head 3 to move, thereby cutting the plate. This is existing technology and will not be described in detail here. During the cutting process, the shielding surface 602 of the support plate 6 faces upward and the support surface 601 faces downward, thereby avoiding contact between the molten metal slag and the support surface 601 during the cutting process, which would affect the flatness of the support surface 601.

[0069] After the cutting is completed, the gantry 2 is first moved to one end of the machine tool 1, away from the plate to be cut. Then, the sliding block 7 is pushed upward by starting the push component. Since the support plate 6 and the sliding block 7 are connected to each other, the support plate 6 is driven to move upward by the two sliding blocks 7. During the movement, the support plate 6 is driven to rotate by the rotation component, so that the support surface 601 of the support plate 6 rotates upward. As the support plate 6 continues to rise, the support plate 6 supports the bottom of the plate and lifts the plate, separating it from the toothed plate 5, switching from point support to surface support. Finally, the plate is pushed horizontally away from the machine tool 1 by the external push device.

[0070] During operation, firstly, the electromagnet 12 is activated, which attracts and fixes the corresponding sliding block 7, making the sliding block 7 and the push plate 8 a whole. By electromagnetically connecting the sliding block 7 and the push plate 8, in scenarios where multiple plates are cut simultaneously, the connection between the corresponding sliding block 7 and the push plate 8 is controlled to push part of the support plate 6 upward, providing independent support for each individual plate and enabling independent unloading of each plate without the need for overall unloading, which is beneficial for improving the cutting effect. Then, the first motor 10 is activated, which drives the first screw 9 to rotate. The first screw 9 is threadedly connected to the push plate 8, while the guide rod 11 is slidably connected to the push plate 8. The guide rod 11 restricts the push plate 8 from rotating with the first screw 9, thereby enabling the push plate 8 to move in the vertical direction of the screw through the threaded connection. The push plate 8 drives the sliding block 7 and the support plate 6 to move as a whole, completing the pushing function.

[0071] As the sliding block 7 moves upward, the support plate 6 and gear 16 move synchronously with the sliding block 7. Under the meshing action of the gear 16 and rack 15, the gear 16 rotates on the rack 15, thereby driving the support plate 6 to flip, so that the blocking surface 602 of the support plate 6 flips downward and the supporting surface 601 flips upward. Then, the gear 16 disengages from the rack 15 and stops driving the support plate 6. The support plate 6 is driven to flip through the cooperation of the gear 16 and rack 15, eliminating the need to install an independent motor, which helps to reduce equipment costs.

[0072] After gear 16 disengages from rack 15, as support plate 6 continues to move upward, guide groove 18 on the side wall of support plate 6 will contact guide bar 17. Guide bar 17 enters guide groove 18, thereby limiting support plate 6 through the cooperation of guide bar 17 and guide groove 18, restricting support plate 6 from continuing to rotate, thus ensuring that support surface 601 always faces upward, ensuring the stability of subsequent jacking support for plate. Among them, guide slope is opened at the end of guide groove 18. Even after gear 16 disengages from rack 15, if support plate 6 is slightly tilted during movement due to mechanical vibration or other actions, causing the docking position of guide groove 18 and guide bar 17 to shift, the guide slope enlarges the size of guide groove 18 port, making it easier for guide bar 17 to be inserted when slightly offset. In addition, the slope has a guiding function. After the bottom of guide bar 17 contacts guide slope, the position of support plate 6 can be automatically corrected under the guiding action of slope.

[0073] In this invention, the pushing component has a two-stage pushing motion. The first stage pushes the support plate 6 to create a cleaning gap between it and the material. At this point, the scraper 24 contacts the bottom of the material. Then, the second motor 21 is activated, driving the second screw 22 to rotate. The second screw 22 moves the slider 20, which in turn moves the support rod 23 and the scraper 24 as a whole. During this movement, the scraper 24 scrapes and cleans the floating debris at the bottom of the material, preventing it from affecting the subsequent support effect. The support rod 23 is tilted due to the obstruction of the first baffle 26. If the scraper 24 encounters stubborn debris that is difficult to scrape off... When slag is being melted, the support rod 23 can flip and move aside under the obstruction of the slag, so that the scraper 24 can descend and get away from the stubborn slag position, avoiding mechanical jamming. Under the elastic force of the first torsion spring 25, after passing the stubborn slag, the support rod 23 can return to its original position, thereby driving the scraper 24 to re-contact the bottom of the plate and continue to scrape and clean the slag until it moves to the position of the relief groove 27 and stops moving. Finally, the second stroke is pushed, that is, the support plate 6 is pushed up, so that the support plate 6 contacts the bottom of the plate and supports the plate. During this process, the scraper 24 and the support rod 23 can rotate into the relief groove 27 to avoid obstructing the rise of the support plate 6.

[0074] This invention cleans the scum on the bottom surface of the plate before the support plate 6 comes into contact with the plate, which helps to ensure the uniformity of subsequent support and avoid plate deformation, which could lead to micro-connection breakage.

[0075] The scraping part 28 is made of flexible rubber, which reduces wear on the bottom of the plate during scraping and cleaning. The scraping part 28 is also tilted, which makes it easier for the scraping part 28 to flip and move with the support rod 23 when encountering difficult-to-clean slag. Furthermore, a collection groove 30 is provided in the guide part 29. The collection groove 30 can collect the scraped slag and prevent the slag from falling directly onto the support surface 601. When the support is reset after the support is completed, the support surface 601 will flip down, and the slag in the collection groove 30 can also be poured out, thus preventing the collection groove 30 from being full of slag. During the cutting process, most of the slag is blown away from the plate by high-pressure gas, and only a small amount of slag sticks to it, which will not cause the collection groove 30 to be full and cause slag to overflow.

[0076] During the scraping process of the scraper 24, the support frame 33 moves with the slider 20. The support frame 33 drives the sliding rod 34, the fixed plate 36, and the limiting plate 37 to move synchronously. Under the elastic force of the second torsion spring 38, the limiting plate 37 always tends to flip towards the second baffle 39. Under the blocking action of the second baffle 39, the limiting plate 37 is in a straight position with the fixed plate 36. As the limiting plate 37 moves, it will contact the teeth on the toothed plate 50. Under the blocking action of the teeth, the limiting plate 37 can flip to make way, thereby avoiding the toothed plate 50 from obstructing the movement of the limiting plate 37, the fixed plate 36, and the sliding rod 34.

[0077] After the sheet material is unloaded, the scraper 24 needs to be controlled to retract. When it retracts to the position of the toothed plate 50, the limiting plate 37 contacts the teeth, and the teeth contact the inclined surface on the limiting plate 37. Under the guidance of the inclined surface, the limiting plate 37 drives the fixed plate 36, the sliding rod 34, and the pushing disc 35 to move closer to the fixed plate 36, pushing the fixed plate 36 to move. The elastic sheet 32 ​​between the two fixed plates 36 deforms. When the limiting plate 37 disengages from the teeth, under the elastic force of the elastic sheet, it drives the pushing disc 35, the sliding rod 34, the fixed plate 36, and the limiting plate 37 to reset. This process is repeated, causing the fixed plate 36 and the scraper 24 to vibrate as a whole. The vibration promotes the removal of impurities from the scraper 24 from the collection tank 30. During the sliding movement, the front end is scraped by the scraper 24 to remove scum, and the rear end... The support cylinder 40 rolls at the bottom of the board to monitor its flatness. When it encounters an uneven area, the roller 44 presses down on the movable rod 43, which in turn presses down on the spring 42, squeezing the pressure sensor 41. The pressure sensor 41 detects an increase in pressure value. When the pressure value exceeds the preset value, it is determined that the bottom of the board is uneven. Since the pressure sensor 41 detects different pressures depending on the descent distance of the movable rod 43, the descent distance of the movable rod 43 can be determined by the pressure value, which is the protrusion distance of the impurity. The controller 45 then controls the flexible support to rise, with the rising distance equal to the protrusion distance of the impurity. This provides support to the bottom of the board through the flexible support, which helps to avoid uneven stress on the board caused by the protrusion of impurities at the bottom, and further improves the stability of the board during feeding.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A CNC laser cutting machine for metal material processing, comprising a machine tool (1), a gantry frame (2) slidably connected to the machine tool (1), a laser cutting head (3) slidably connected to the gantry frame (2), and a mounting groove (4) provided on the machine tool (1), wherein a plurality of toothed plates (5) are fixed in the mounting groove (4), characterized in that, Also includes: Support plate (6), the support plate (6) is disposed in the mounting groove (4), the support plate (6) has multiple supports, the support plate (6) is disposed in the gap between adjacent toothed plates (5), the support plate (6) has a support surface (601) and a shielding surface (602), the shielding surface (602) faces upward and the support surface (601) faces downward; Sliding block (7), the sliding block (7) is vertically slidably connected to the inner wall of the mounting groove (4), the sliding block (7) is symmetrically arranged at both ends of the support plate (6), the sliding block (7) is rotatably connected to the support plate (6), and a rotating component is provided inside the sliding block (7), the rotating component is used to drive the support surface (601) of the support plate (6) to flip upward when the support plate (6) rises; A pushing component is disposed at the bottom of the mounting slot (4) and is used to push the sliding block (7) upward.

2. The CNC laser cutting machine for metal material processing according to claim 1, characterized in that: The pushing assembly includes a pushing plate (8), one end of which is threadedly connected to a first screw (9). A first motor (10) is provided at the bottom end of the first screw (9). The first motor (10) is fixed on the inner wall of the mounting groove (4). The output shaft of the first motor (10) is fixed to the bottom of the first screw (9). The top end of the first screw (9) is rotatably connected to the machine tool (1). A guide rod (11) is slidably inserted at the other end of the pushing plate (8). Both ends of the guide rod (11) are fixed on the machine tool (1). The pushing plate (8) and the sliding block (7) are connected by an electromagnetic mechanism.

3. The CNC laser cutting machine for metal material processing according to claim 2, characterized in that: The electromagnetic mechanism includes an electromagnet (12), a slot (13) is provided on the push plate (8), the sliding block (7) is inserted into the slot (13), the electromagnet (12) is fixed on the inner wall of the slot (13), and the sliding block (7) is made of ferromagnetic material.

4. The CNC laser cutting machine for metal material processing according to claim 1, characterized in that: The rotating assembly includes a vertical groove (14) which is formed on the side wall of the sliding block (7). A rack (15) is inserted in the vertical groove (14) and fixed on the inner wall of the mounting groove (4). A gear (16) is engaged on one side of the rack (15) and the gear (16) is sleeved and fixed on the rotating shaft of the support plate (6).

5. A CNC laser cutting machine for metal material processing according to claim 4, characterized in that: Two guide strips (17) are fixed on the side wall of the mounting groove (4). The guide strips (17) are positioned above the rack (15). Two guide grooves (18) are opened on the side wall of the support plate (6). The guide grooves (18) are located directly below the guide strips (17). The end of the guide groove (18) near the support surface (601) has a guide slope.

6. A CNC laser cutting machine for metal material processing according to claim 1, characterized in that: The support plate (6) has grooves (19) on both sides. A slider (20) is slidably connected in each of the two grooves (19). A second motor (21) is fixed in one of the grooves (19). A second screw (22) is fixed to the end of the output shaft of the second motor (21). The end of the second screw (22) is rotatably connected to the inner wall of the groove (19). The second screw (22) is threadedly connected to one of the sliders (20). Support rods (23) are rotatably connected to the side walls of both sliders (20). A scraper (24) is fixed to the top of the support rod (23). The support rod (23) is inclined. A first torsion spring (25) is sleeved on the rotation shaft of the support rod (23). One end of the first torsion spring (25) is fixed to the support rod (23), and the other end of the first torsion spring (25) is fixed to the slider (20). A first baffle (26) is provided on one side of the support rod (23). The first baffle (26) is fixed on the side wall of the slider (20). A relief groove (27) is opened at the end of the support surface (601).

7. A CNC laser cutting machine for metal material processing according to claim 6, characterized in that: The scraper (24) includes a scraping part (28) and a guide part (29). The scraping part (28) and the guide part (29) are integrally formed and are L-shaped. The guide part (29) is horizontally fixed to the end of the support rod (23). The scraping part (28) is inclinedly arranged at the end of the guide part (29). The surface of the guide part (29) has a collection groove (30).

8. A CNC laser cutting machine for metal material processing according to claim 6, characterized in that: The support rod (23) includes two fixed rods (31), and an arc-shaped elastic sheet (32) is fixed between the two fixed rods (31). A vibration assembly is provided between the fixed rods (31) and the inner wall of the groove (19). The vibration assembly includes a support frame (33), which is fixed to the top of the slider (20). A sliding rod (34) is slidably inserted on the support frame (33). A pusher plate (35) is fixed to one end of the sliding rod (34), and a fixing plate (35) is fixed to the other end of the sliding rod (34). A plate (36) is fixed and connected to a limiting plate (37). A second torsion spring (38) is sleeved on the rotating shaft of the limiting plate (37). One end of the second torsion spring (38) is fixed on the fixed plate (36), and the other end of the second torsion spring (38) is fixed on the limiting plate (37). A second baffle (39) is fixed on the fixed plate (36). A toothed plate (50) is fixed on the inner wall of the groove (19). An inclined surface is provided on the side of the limiting plate (37) away from the second baffle (39).

9. A CNC laser cutting machine for metal material processing according to claim 7, characterized in that: Support cylinders (40) are fixed on the side walls of both sliders (20). Pressure sensors (41) are fixed inside the support cylinders (40). A spring (42) is fixed on the top of the pressure sensor (41). A movable rod (43) is fixed on the top of the spring (42). The movable rod (43) is inserted into the support cylinder (40). A roller (44) is rotatably connected between the two movable rods (43). The pressure sensor (41) is used to detect the flatness of the bottom of the plate. A controller (45) is fixed on one side of the machine tool (1). A strip groove (46) is opened on the support surface (601). The inside of the strip groove (46) has a flexible support component. When the bottom of the plate is not flat, the controller (45) is used to control the flexible support component to rise.

10. A CNC laser cutting machine for metal material processing according to claim 9, characterized in that: The flexible support assembly includes a flexible plate (47) inserted into a strip groove (46). A sliding strip (48) is fixed to the bottom of the flexible plate (47). An electric push rod (49) is fixed to the inner wall of the strip groove (46). The movable end of the electric push rod (49) is fixed to the bottom of the sliding strip (48).

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