Novel beam device for laser cutting machine

Abstract

This invention discloses a novel crossbeam device for a laser cutting machine, comprising an aluminum crossbeam and a cutting head. The cutting head is mounted on the aluminum crossbeam and moves along the length of the aluminum crossbeam. The aluminum crossbeam has a reinforcing rib on at least one side around its axis, and the reinforcing rib is arranged along the length of the aluminum crossbeam. Both sides of the cutting head have extension plates corresponding to the reinforcing ribs. The side of the extension plate away from the cutting head has a first sliding groove, and a sliding plate is slidably connected in the first sliding groove. The extension plate has a second sliding groove corresponding to the reinforcing rib, and the reinforcing rib is slidably connected to the second sliding groove. The extension plates increase the contact area between the cutting head and the aluminum crossbeam, thereby reducing stress concentration on the aluminum crossbeam, dispersing the pressure of the cutting head on the aluminum crossbeam, reducing the deformation of the aluminum crossbeam, and improving the positional accuracy of the cutting head.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, and more specifically to a novel crossbeam device for use in laser cutting machines. Background Technology

[0002] As a crucial component of a laser cutting machine, the crossbeam is primarily erected on the ground beam and supports the laser head to enable its two-axis movement. To achieve rapid cutting, current technologies utilize aluminum crossbeams to significantly reduce their weight, facilitating rapid movement on the ground beam. However, the aluminum crossbeam structure significantly reduces its strength. Furthermore, the substantial mass of the laser cutting head causes deformation during rapid movement after its installation, leading to incorrect head positioning and affecting cutting accuracy. Therefore, a novel crossbeam device for laser cutting machines is needed to reduce deformation during movement and improve cutting accuracy. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a new type of crossbeam device for laser cutting machines that can reduce deformation during movement and improve cutting accuracy.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a novel crossbeam device for a laser cutting machine, comprising an aluminum crossbeam and a cutting head, wherein the cutting head is mounted on the aluminum crossbeam and moves along the length of the aluminum crossbeam, and the aluminum crossbeam is provided with a reinforcing rib on at least one side around its axis, the reinforcing rib being arranged along the length of the aluminum crossbeam, and extension plates corresponding to the reinforcing ribs being provided on both sides of the cutting head, wherein a first sliding groove is provided on the side of the extension plate away from the cutting head, and a sliding plate is slidably connected in the first sliding groove, and a second sliding groove is provided on the extension plate corresponding to the reinforcing rib, the reinforcing rib being slidably connected to the second sliding groove.

[0005] As a further improvement of the present invention, the number of reinforcing ribs is 2, and they are respectively provided on two adjacent sides of the aluminum crossbeam.

[0006] As a further improvement of the present invention, the extension plate includes a first plate and a second plate that are connected to each other. The first plate is disposed on the front side of the aluminum crossbeam, and the first sliding groove is disposed on the end of the first plate away from the cutting head.

[0007] As a further improvement of the present invention, the reinforcing rib includes a plurality of ribs connected in sequence, and the ribs are fixedly connected to the aluminum crossbeam by screws.

[0008] As a further improvement of the present invention, both ends of the aluminum crossbeam are provided with driving devices, which are used to drive the aluminum crossbeam to move along the length of the ground beam. Both ends of the aluminum crossbeam are also provided with follow-up devices and laser emitting devices. The follow-up devices are respectively connected to the laser emitting device and the ground beam. The aluminum crossbeam is provided with an irradiation plate corresponding to the output end of the laser emitting device. The follow-up devices are used to control the laser emitting device to generate light spots of different sizes after moving along the ground beam. The irradiation plate is provided with photosensitive components, which are used to detect the size of the light spots on the irradiation plate.

[0009] As a further improvement of the present invention, a second rack is provided on the ground beam along the length direction, the driving device is a drive motor, the output end of the drive motor is provided with a second drive gear and meshes with the second rack, the follower device includes a follower gear and a linkage mechanism, the follower gear meshes with the rack and is connected to the laser emitting device through the linkage mechanism.

[0010] As a further improvement of the present invention, the laser emitting device includes a first cylinder and a second cylinder. The first cylinder contains an emission source. Both the first and second cylinders contain focusing lenses. The first cylinder is fitted with the second cylinder and threadedly connected to it. The first cylinder is rotatably mounted relative to an aluminum crossbeam. The aluminum crossbeam has a limiting structure corresponding to the second cylinder. The limiting structure restricts the second cylinder from moving only along its axial direction. The first cylinder has a toothed ring. The linkage mechanism includes a first bevel gear, a second bevel gear, and a linkage gear. The first bevel gear is coaxially connected to a follower gear. The second bevel gear meshes with the first bevel gear. The linkage gear is coaxially fixedly connected to the second bevel gear and meshes with the toothed ring.

[0011] As a further improvement of the present invention, the limiting structure is a retaining ring, and a retaining groove is provided on the outer side of the first cylinder along the length direction. The retaining ring is sleeved on the first cylinder, and a retaining block is provided on the retaining ring corresponding to the retaining groove. The retaining block is slidably connected to the retaining groove.

[0012] The beneficial effects of this invention are:

[0013] 1. The extension plate increases the contact area between the cutting head and the aluminum beam, thereby reducing stress concentration on the aluminum beam, dispersing the pressure of the cutting head on the aluminum beam, reducing deformation of the aluminum beam, and improving the positional accuracy of the cutting head.

[0014] 2. The sliding plate allows the cutting head to extend and retract automatically during movement, thereby increasing the contact area between the cutting head and the aluminum crossbeam.

[0015] 3. The addition of reinforcing ribs not only improves the overall strength of the aluminum beam but also guides the extension plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the cutting head installation according to the first embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the sliding plate installation of the present invention;

[0019] Figure 4 for Figure 1 Enlarged view of section A;

[0020] Figure 5 for Figure 2 Enlarged view of the layout at point B;

[0021] Figure 6 This is a schematic cross-sectional view of the cavity in the first embodiment of the present invention;

[0022] Figure 7 for Figure 6 Enlarged view of section C;

[0023] Figure 8 This is a schematic diagram of the support member installation according to the first embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the ground beam installation according to the second embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the installation of the drive device according to the second embodiment of the present invention;

[0026] Figure 11 This is a schematic diagram of the installation of the follower gear according to the second embodiment of the present invention;

[0027] Figure 12 This is a schematic diagram of the installation of the follower device according to the second embodiment of the present invention;

[0028] Figure 13 This is a schematic diagram of the installation of the first cylinder and the second cylinder according to the second embodiment of the present invention.

[0029] Reference numerals: 1. Aluminum crossbeam; 2. Cutting head; 3. First rack; 4. Drive motor; 5. Reinforcing rib; 6. Extension plate; 7. First sliding groove; 8. Sliding plate; 9. Second sliding groove; 10. First plate; 11. Second plate; 12. Limiting block; 13. Stop block; 14. Rib; 15. Strip; 16. Abutting block; 17. Cavity; 18. Support member; 19. Ground beam; 20. Connecting part; 21. Second rack; 22. Drive device; 23. Follower device; 2 4. Laser emitting device; 25. Irradiation plate; 26. Photosensitive component; 27. Follower gear; 28. Linkage mechanism; 29. ​​First cylinder; 30. Second cylinder; 31. Emitting source; 32. Focusing lens; 33. Limiting structure; 34. Gear ring; 35. First bevel gear; 36. Second bevel gear; 37. Linkage gear; 38. Second connecting rod; 39. Mounting rod; 40. Snap ring; 41. Snap groove; 42. Snap block; 43. First drive gear; 44. Second drive gear. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals.

[0031] Figure 1-8 In the first embodiment of the present invention, a novel crossbeam device for a laser cutting machine includes an aluminum crossbeam 1 and a cutting head 2. The cutting head 2 is mounted on the aluminum crossbeam 1 and moves along the length of the aluminum crossbeam 1. In this embodiment, a first rack 3 is provided on the upper surface of the aluminum crossbeam 1 along the length direction. A drive motor 4 is provided on the cutting head 2. A first drive gear 43 is provided at the output end of the drive motor 4 and meshes with the first rack 3. The aluminum crossbeam 1 has a reinforcing rib 5 on at least one side around its axis. The reinforcing rib 5 is arranged along the length direction of the aluminum crossbeam 1. Extension plates 6 corresponding to the reinforcing ribs 5 are provided on both sides of the cutting head 2. A first sliding groove 7 is opened on the side of the extension plate 6 away from the cutting head 2. A sliding plate 8 is slidably connected in the first sliding groove 7. A second sliding plate 8 is provided on the extension plate 6 corresponding to the reinforcing rib 5. The sliding groove 9, with the reinforcing rib 5 slidably connected to the second sliding groove 9, and the extension plates 6 on both sides can increase the contact area with the aluminum beam 1, thereby reducing stress concentration caused by the cutting head 2, making the stress on the aluminum beam 1 more uniform, and reducing the deformation of the aluminum beam 1. At the same time, the setting of the reinforcing rib 5 increases the overall strength of the aluminum beam 1 and can also guide the extension plates 6 in conjunction with the second sliding groove 9. At the same time, the setting of the sliding plate 8 allows the sliding plate 8 on the side away from the cutting head 2 to automatically move out of the first sliding groove 7 during the movement of the cutting head 2, thereby further increasing the contact area with the aluminum beam 1. At the same time, the sliding plate 8 on the moving direction side can be automatically stored during the movement of the cutting head 2, so that the sliding plate 8 will not affect the movement range of the cutting head 2.

[0032] Preferably, in one embodiment, the number of reinforcing ribs 5 is 1 and they are arranged on the front side of the aluminum beam 1. In this embodiment, the number of reinforcing ribs 5 is 2 and they are arranged on both the front side and the upper side of the aluminum beam 1 respectively. The extension plate 6 includes a first plate body 10 and a second plate body 11 connected to each other. The first plate body 10 is arranged on the front side of the aluminum beam 1. The sides of the first plate body 10 and the second plate body 11 are provided with mounting holes and connected to the cutting head 2 through the mounting holes. The first sliding groove 7 is arranged on the end of the first plate body 10 away from the cutting head 2. The end of the extension plate 6 is provided with a limiting block 12. The first sliding groove 7 is provided with a stop block 13 corresponding to the limiting block 12. The stop block 13 is used to abut against the limiting block 12 and limit the movement range of the extension plate 6.

[0033] Preferably, the reinforcing rib 5 includes a plurality of ribs 14 connected in sequence. The ribs 14 are fixedly connected to the aluminum beam 1 by screws. The first rack 3 is composed of a plurality of strips 15 connected in sequence. The strips 15 are fixedly connected to the aluminum beam 1 by screws. The plurality of ribs 14 and strips 15 can concentrate the deformation on a single rib 14 and strip 15, thereby avoiding deformation of adjacent ribs 14 and strips 15. At the same time, the arrangement of a plurality of ribs 14 and strips 15 can facilitate replacement.

[0034] Preferably, the aluminum beam 1 is symmetrically provided with abutment blocks 16, which are used to abut the side of the extension plate 6 away from the cutting head 2 and limit the movement range of the extension plate 6.

[0035] Preferably, the aluminum beam 1 forms a cavity 17 along its length, and a honeycomb-shaped support member 18 is provided in the cavity 17. In one embodiment, the support member 18 is arranged along the length of the cavity 17. In this embodiment, the support member 18 is arranged perpendicular to the ground, so that the honeycomb holes face the ground. Since the front side of the aluminum beam 1 is the main stress surface, the vertically arranged support member 18 can adapt to the stress direction, thereby resisting stress and reducing the deformation of the aluminum beam 1.

[0036] Figure 9-12This is a second embodiment of the present invention, differing from the first embodiment in that it further includes two ground beams 19 corresponding to both ends of the aluminum crossbeam 1. A connecting portion 20 is formed on the upper surface of each ground beam 19, and a second rack 21 is provided on one side of each connecting portion 20. Both ends of the aluminum crossbeam 1 are provided with driving devices 22, which drive the aluminum crossbeam 1 to move along the length of the ground beams 19. The driving device 22 is a drive motor; more preferably, to improve the correction accuracy, the drive motor is a servo motor. The output end of the drive motor is provided with a second drive gear 44 that meshes with the second rack 21. Preferably, the second rack 21 is positioned on the outer side of the second drive gear 44, so that the two second racks 21 on both sides together form a limit. Both ends of the aluminum crossbeam 1 are also provided with a follower device 23 and a laser emitting device 24. The follower device 23 is respectively connected to the laser emitting device 24 and the second rack 21. The aluminum crossbeam 1 is driven by the laser emitting device 24. The output end of the light emitting device 24 is provided with an illumination plate 25. The follower device 23 is used to control the laser emitting device 24 to generate light spots of different sizes after moving along the second rack 21. The illumination plate 25 is provided with photosensitive components 26, which are used to detect the size of the light spots on the illumination plate 25. In this embodiment, the photosensitive components 26 are photosensitive sensors. In the initial state, the laser emitting device 24 emits laser light to the illumination plate 25, and the photosensitive components 26 on the illumination plate 25 record the initial light spot size. Furthermore, the aluminum beam 1 moves along the length direction of the ground beam 19 by the simultaneous movement of the motors at both ends of the aluminum beam 1. After the aluminum beam 1 moves, the change in light spot is recorded by the photosensitive components 26 on the illumination plate 25. This change is compared with a predetermined change, and the difference in the change is used to drive the corresponding drive motor to move, thereby fine-tuning the end of the aluminum beam 1 and achieving the correction effect.

[0037] Preferably, the follower device 23 includes a follower gear 27 and a linkage mechanism 28. The follower gear 27 meshes with the second rack 21 and is connected to the laser emitting device 24 through the linkage mechanism 28. The laser emitting device 24 includes a first cylinder 29 and a second cylinder 30. The first cylinder 29 is provided with an emission source 31 for emitting laser light. Both the first cylinder 29 and the second cylinder 30 are provided with focusing lenses 32. The first cylinder 29 is sleeved on the second cylinder 30 and threadedly connected to the second cylinder 30. The first cylinder 29 is rotatably disposed relative to the aluminum crossbeam 1. The aluminum crossbeam 1 is provided with a limiting structure 33 corresponding to the second cylinder 30. The limiting structure 33 is used to restrict the movement of the second cylinder 30 along its axial direction. The first cylinder 29 is provided with a toothed ring 34. The linkage mechanism 28 includes a first bevel gear 35, a second bevel gear 36, and a linkage gear 37. Stable motion can be achieved through gear follow-up and linkage. To accurately determine the light spot change rate and thus reduce the sensing error of the light sensor 26, a second connecting rod 38 is coaxially fixed on the follower gear 27. The end of the second connecting rod 38 away from the follower gear 27 is connected to the first bevel gear 35. An mounting rod 39 is provided on the aluminum crossbeam 1. The second bevel gear 36 and the linkage gear 37 are coaxially fixed on the mounting rod 39. The second bevel gear 36 meshes with the first bevel gear 35, and the linkage gear 37 meshes with the gear ring 34. In use, when the drive motor drives the aluminum crossbeam 1 to move, the follower gear 27 rotates accordingly, further driving the first bevel gear 35 to rotate, further driving the linkage gear 37 to rotate through the second bevel gear 36, and further driving the first cylinder 29 to rotate through the gear ring 34. Since the limiting structure 33 limits the second cylinder 30, when the first cylinder 29 rotates, the second cylinder 30 can move along its own axis, thereby realizing focus adjustment.

[0038] Preferably, the limiting structure 33 is a retaining ring 40, and the outer side of the first cylinder 29 is provided with a retaining groove 41 along the length direction. The retaining ring 40 is sleeved on the first cylinder 29, and the retaining ring 40 is provided with a retaining block 42 corresponding to the retaining groove 41. The retaining block 42 is slidably connected to the retaining groove 41.

[0039] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A novel crossbeam device for a laser cutting machine, characterized in that: The device includes an aluminum beam (1) and a cutting head (2). The cutting head (2) is mounted on the aluminum beam (1) and moves along the length of the aluminum beam (1). The aluminum beam (1) has a reinforcing rib (5) on at least one side around its axis. The reinforcing rib (5) is arranged along the length of the aluminum beam (1). The cutting head (2) has extension plates (6) on both sides corresponding to the reinforcing rib (5). The side of the extension plate (6) away from the cutting head (2) has a first sliding groove (7). A sliding plate (8) is slidably connected in the first sliding groove (7). The extension plate (6) has a second sliding groove (9) corresponding to the reinforcing rib (5). The reinforcing rib (5) is slidably connected to the second sliding groove (9). Both ends of the aluminum beam (1) are provided with driving devices (22). The driving devices (22) are used to drive the aluminum beam (1) to move along the length of the ground beam (19). Both ends of the aluminum beam (1) are also provided with follower devices (23) and laser emitting devices (24). The follower devices (23) are respectively connected to the laser emitting device (24) and the ground beam (19). The aluminum beam (1) is provided with an irradiation plate (25) corresponding to the output end of the laser emitting device (24). The follower devices (23) are used to control the laser emitting device (24) to generate light spots of different sizes after moving along the ground beam (19). The irradiation plate (25) is provided with light sensing components (26). The light sensing components (26) are used to detect the size of the light spots on the irradiation plate (25).

2. The novel crossbeam device for a laser cutting machine according to claim 1, characterized in that: The number of the reinforcing ribs (5) is 2, and they are respectively set on the two adjacent sides of the aluminum beam (1).

3. The novel crossbeam device for a laser cutting machine according to claim 2, characterized in that: The extension plate (6) includes a first plate (10) and a second plate (11) connected to each other. The first plate (10) is provided on the front side of the aluminum crossbeam (1), and the first sliding groove (7) is provided on the end of the first plate (10) away from the cutting head (2).

4. The novel crossbeam device for a laser cutting machine according to claim 1, characterized in that: The reinforcing rib (5) includes a plurality of ribs (14) connected in sequence, and the ribs (14) are fixedly connected to the aluminum beam (1) by screws.

5. The novel crossbeam device for a laser cutting machine according to claim 1, characterized in that: A second rack (21) is provided on the ground beam (19) along the length direction. The driving device (22) is a drive motor. The output end of the drive motor is provided with a second drive gear (44) and meshes with the second rack (21). The follower device (23) includes a follower gear (27) and a linkage mechanism (28). The follower gear (27) meshes with the rack and is connected to the laser emitting device (24) through the linkage mechanism (28).

6. The novel crossbeam device for a laser cutting machine according to claim 5, characterized in that: The laser emitting device (24) includes a first cylindrical body (29) and a second cylindrical body (30). The first cylindrical body (29) contains an emission source (31). Both the first and second cylindrical bodies (29 and 30) contain focusing lenses (32). The first cylindrical body (29) is fitted onto the second cylindrical body (30) and threadedly connected to it. The first cylindrical body (29) is rotatably mounted relative to an aluminum crossbeam (1). The aluminum crossbeam (1) has a limiting structure (33) corresponding to the second cylindrical body (30). The limiting structure (33) is used to restrict the second cylinder (30) to move only along its axial direction. The first cylinder (29) is provided with a toothed ring (34). The linkage mechanism (28) includes a first bevel gear (35), a second bevel gear (36) and a linkage gear (37). The first bevel gear (35) is coaxially connected to the follower gear (27). The second bevel gear (36) meshes with the first bevel gear (35). The linkage gear (37) is coaxially fixedly connected to the second bevel gear (36) and meshes with the toothed ring (34).

7. The novel crossbeam device for a laser cutting machine according to claim 6, characterized in that: The limiting structure (33) is a retaining ring (40). The first cylinder (29) has a retaining groove (41) along its length on the outer side. The retaining ring (40) is sleeved on the first cylinder (29). The retaining ring (40) has a retaining block (42) corresponding to the retaining groove (41). The retaining block (42) is slidably connected to the retaining groove (41).

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