A crossbeam automatic adjusting system of a laser cutting machine and the laser cutting machine

Abstract

The application discloses a kind of laser cutting machine beam automatic adjusting system and laser cutting machine, the system includes beam, fixed drive seat and floating drive seat;Fixed drive seat and floating drive seat are all included base and drive mechanism;Drive mechanism is connected with base, and can be moved along the length direction of beam relative to base;Base and drive mechanism are all connected with bed body, and drive mechanism can drive base to move along bed body;The first end of beam is connected with the base of fixed drive seat;The second end of beam is connected with the base of floating drive seat, and can be moved along the length direction of beam relative to the base of floating drive seat.By fixed drive seat guarantee positioning reference, by floating drive seat release thermal stress and installation error, so as to not produce the problem of stifled strength, jam;By setting the drive mechanism in fixed drive seat and floating drive seat can move along the length direction of beam, to adapt to the non-parallel guide rail on bed body, ensure the high-precision straight line operation of beam.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and in particular to an automatic beam adjustment system for a laser cutting machine and a laser cutting machine. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In current laser cutting machines, when the crossbeam is connected to the bed, a linear guide is installed on the bed, and the crossbeam is directly connected to the slider in the linear guide, so that the crossbeam can move along the bed. A rack is installed on the bed, and the crossbeam is connected to the drive mechanism. The drive mechanism includes a motor, a reducer, and gears. The motor and reducer are connected, the reducer and gears are connected, and the gears mesh with the rack, so that the motor drives the gears to rotate, thereby driving the crossbeam to move along the bed.

[0004] However, the installation accuracy of the guide rails and racks on both sides of the current laser cutting machine bed is difficult to guarantee, which can easily lead to problems such as non-parallelism of the guide rails on both sides and uneven gaps in the racks. In addition, the crossbeam adopts a rigid fixed structure at both ends, which is prone to torsional deformation during high-speed movement, resulting in deviation of the cutting optical path and a decrease in processing accuracy. The rigid connection structure will generate stress concentration under thermal expansion or assembly errors, which can easily damage the guide rail slider or base connection parts, thus failing to guarantee the high-precision linear movement of the crossbeam. Summary of the Invention

[0005] In order to solve the above problems, the present invention proposes an automatic beam adjustment system for a laser cutting machine and a laser cutting machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In the first aspect, an automatic adjustment system for the crossbeam of a laser cutting machine is proposed, including a crossbeam, a fixed drive seat, and a floating drive seat; Both the fixed drive seat and the floating drive seat include a base and a drive mechanism; the drive mechanism is connected to the base and can move relative to the base along the length of the crossbeam; both the base and the drive mechanism are connected to the bed, and the drive mechanism can drive the base to move along the bed; The first end of the crossbeam is connected to the base of the fixed drive seat; the second end of the crossbeam is connected to the base of the floating drive seat and can move relative to the base of the floating drive seat along the length of the crossbeam.

[0007] Furthermore, the base is perpendicular to the direction of movement of the bed and the length direction of the crossbeam.

[0008] Furthermore, the first end of the crossbeam is connected to the fixing block, and the fixing block is connected to the base of the fixed drive seat; The second end of the crossbeam is connected to the base of the floating drive seat via the first linear guide rail.

[0009] Furthermore, the second end of the crossbeam is connected to the slide plate, which in turn is connected to the slider in the first linear guide rail.

[0010] Furthermore, the drive mechanism is connected to the base via a second linear guide rail.

[0011] Furthermore, the drive mechanism is connected to the elastic connector, which is also connected to the base. The elastic connector is used to reset the position of the drive mechanism.

[0012] Furthermore, the base is connected to the bed via a third linear guide rail.

[0013] Furthermore, the drive mechanism includes a power mechanism and a gear; the power mechanism is connected to the gear and can drive the gear to rotate; a rack is provided on the bed, and the gear meshes with the rack; the power mechanism is connected to the base and can move relative to the base.

[0014] Furthermore, the power mechanism includes a motor, a reducer, and a mounting plate; the motor is connected to the reducer, the reducer is connected to a gear, the reducer is fixed on the mounting plate, the mounting plate is connected to the base, and can move relative to the base.

[0015] Secondly, the present invention also proposes a laser cutting machine, including an automatic beam adjustment system for a laser cutting machine proposed in the first aspect of the present invention.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention proposes an automatic beam adjustment system for a laser cutting machine and a laser cutting machine. The system has one end of the beam connected to a fixed drive seat and the other end connected to a floating drive seat, and can move relative to the floating drive seat along the length of the beam. The fixed drive seat ensures the positioning reference, while the floating drive seat releases thermal stress and installation errors, thus preventing jamming and sticking problems. By setting the drive mechanism in the fixed and floating drive seats to move relative to the base along the length of the beam, it adapts to non-parallel guide rails caused by thermal expansion or installation errors on the machine bed, automatically compensating for installation errors and thermal deformation of the guide rails and racks, ensuring that the beam runs without twisting or swaying, and ensuring high-precision linear operation of the beam.

[0017] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0019] Figure 1 This is a schematic diagram of the overall structure of an automatic beam adjustment system for a laser cutting machine according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the fixed drive seat connection structure proposed in an embodiment of the present invention; Figure 3 This is a schematic diagram of the base structure proposed in an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection structure between the first linear guide rail and the floating drive seat proposed in an embodiment of the present invention; Figure 5 This is a schematic diagram of the skateboard structure proposed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the floating drive seat connection structure proposed in an embodiment of the present invention; Figure 7 This is a schematic diagram of the connection structure between the second linear guide rail and the base proposed in an embodiment of the present invention; Figure 8 This is a schematic diagram of the tension spring fixing block structure proposed in an embodiment of the present invention; Figure 9 This is a schematic diagram of the connection structure between the drive mechanism and the base proposed in an embodiment of the present invention; Figure 10 This is a schematic diagram of the drive mechanism structure proposed in an embodiment of the present invention; Figure 11 This is a schematic diagram of the connection structure between the crossbeam and the bed proposed in an embodiment of the present invention.

[0020] The components are: 1. Crossbeam, 2. Bed, 3. Fixed drive seat, 4. Floating drive seat, 5. Slide plate, 6. Tension spring fixing block, 7. Elastic connector, 8. Reducer, 9. Gear, 10. Mounting plate, 11. Slider, 12. Guide rail, 13. Bolt, 14. Nut, 15. Set screw, 16. Nut, 17. Guide rail, 18. Slider, 19. Base. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] In this invention, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.

[0025] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0026] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0027] First, the application scenarios of an automatic beam adjustment system for a laser cutting machine proposed in the embodiments of the present invention will be described.

[0028] The present invention provides an automatic adjustment system for the crossbeam of a laser cutting machine, which is applied to the specific application scenario of connecting the crossbeam and the bed of a laser cutting machine.

[0029] In current laser cutting machines, when the crossbeam is connected to the bed, a linear guide is installed on the bed, and the crossbeam is directly connected to the slider in the linear guide, so that the crossbeam can move along the bed. A rack is installed on the bed, and the crossbeam is connected to the drive mechanism. The drive mechanism includes a motor, a reducer, and gears. The motor and reducer are connected, the reducer and gears are connected, and the gears mesh with the rack, so that the motor drives the gears to rotate, thereby driving the crossbeam to move along the bed.

[0030] With the popularization of laser cutting machines for sheet metal, their fast, stable, and efficient cutting effects have led to their widespread application in the processing of various sheet metals. More and more large-size, high-power, and high-tonnage ultra-large format laser cutting machines (crossbeam stroke ≥ 13m) have emerged. In these types of laser cutting machines, the long crossbeam makes it difficult to guarantee the installation accuracy of the guide rails and racks on both sides of the bed. This can easily result in problems such as non-parallelism of the guide rails and uneven rack clearance. Furthermore, the crossbeam uses a rigid fixed structure at both ends, which is prone to torsional deformation during high-speed movement, leading to deviation of the cutting optical path and a decrease in processing accuracy. In gear and rack transmission, thermal deformation and installation errors of the ultra-long stroke rack can cause changes in tooth clearance, requiring regular manual adjustments, resulting in high maintenance costs and poor accuracy stability. Rigid connection structures can generate stress concentration under thermal expansion or assembly errors, easily damaging the guide rail slider or base connection parts, thus failing to guarantee the high-precision linear movement of the crossbeam.

[0031] To ensure high-precision linear motion of the crossbeam even when the guide rails on both sides of the machine bed are not parallel and the rack clearance is uneven, this invention proposes an automatic crossbeam adjustment system for laser cutting machines. This system addresses pain points such as poor crossbeam motion stability, uncontrollable gear and rack meshing clearance, easy crossbeam twisting, and inability to compensate for non-parallelism between the two guide rails in ultra-large format laser cutting machines. It employs a dual-side drive, one fixed and one floating mechanism, automatic spring pre-tensioning, and high pre-pressure guiding technology to achieve crossbeam operation without twisting or swaying; perfect gear and rack meshing with no backlash; automatic compensation for installation errors and thermal deformation of the guide rails and racks; and significantly improved dynamic rigidity, positioning accuracy, and repeatability. This ensures high-precision linear motion of the crossbeam, reduces installation and debugging difficulty, and extends service life.

[0032] This invention provides an automatic beam adjustment system for a laser cutting machine, such as... Figures 1-11 As shown, it includes a crossbeam 1, a fixed drive seat 3, and a floating drive seat 4; Both the fixed drive seat 3 and the floating drive seat 4 include a base 19 and a drive mechanism; the drive mechanism is connected to the base 19 and can move relative to the base 19 along the length of the crossbeam; both the base 19 and the drive mechanism are connected to the bed 2, and the drive mechanism can drive the base 19 to move along the bed 2. The first end of the crossbeam 1 is connected to the base of the fixed drive seat 3; the second end of the crossbeam 1 is connected to the base of the floating drive seat 4 and can move relative to the base of the floating drive seat along the length of the crossbeam.

[0033] This invention proposes an automatic beam adjustment system for a laser cutting machine. One end of the beam is connected to a fixed drive seat, and the other end is connected to a floating drive seat, allowing the beam to move relative to the floating drive seat along its length. The fixed drive seat ensures a positioning reference, while the floating drive seat releases thermal stress and installation errors, preventing jamming or sticking. The drive mechanisms in both the fixed and floating drive seats can move relative to the base along the beam's length to accommodate non-parallel guide rails caused by thermal expansion or installation errors on the machine bed, ensuring high-precision linear operation of the beam.

[0034] In some embodiments, the base 19 is perpendicular to the length direction of the crossbeam 1 along the moving direction of the bed 2.

[0035] By restricting the base 19 to move perpendicular to the length direction of the crossbeam 1 along the bed 2, when the guide rails on both sides of the bed are not parallel, the movement of the floating drive seat is used to prevent the crossbeam from getting stuck or jammed when moving along the bed.

[0036] In some embodiments, the first end of the crossbeam 1 is connected to the fixed block, and the fixed block is connected to the base of the fixed drive seat 3; the second end of the crossbeam 1 is connected to the base of the floating drive seat 4 through the first linear guide rail.

[0037] By setting a first linear guide rail, the relative movement between the floating drive seat and the crossbeam is guided. By setting a fixed block, the first end and the second end of the crossbeam 1 are kept at the same height, that is, the flatness of the crossbeam 1 is guaranteed, thereby ensuring the machining accuracy.

[0038] The fixing block and the base of the fixed drive seat 3 can be machined as one piece or separately, and then the fixing block and the base of the fixed drive seat 3 are fixedly connected together.

[0039] like Figure 4 As shown, the second end of the crossbeam 1 is connected to the base of the floating drive seat 4 via two first linear guide rails.

[0040] Two first linear guides are arranged parallel to each other along the length of the crossbeam to ensure the stability of the relative movement between the first linear guides and the base of the floating drive seat 4.

[0041] The first linear guide rail includes a guide rail 17 and a slider 18. The slider 18 is slidably connected to the guide rail 17. The second end of the crossbeam 1 is connected to the slider 18. The guide rail 17 is fixed on the base of the floating drive seat 4. In order to ensure the smooth movement of the floating drive seat 4, two sliders 18 are provided on each guide rail 17.

[0042] In some embodiments, the second end of the crossbeam 1 is connected to the slide plate 5, and the slide plate 5 is connected to the slider in the first linear guide rail.

[0043] like Figure 5 As shown, the slide plate 5 is connected to the crossbeam 1 by bolts, and the slide plate 5 is also connected to the slider 18 by bolts.

[0044] In some embodiments, the base 19 is connected to the bed 2 via a third linear guide rail.

[0045] The base of the fixed drive seat and the base of the floating drive seat are respectively connected to the bed 2 via the third linear guide rail; the guide rail of the third linear guide rail is connected to the bed, and the slider in the third linear guide rail is connected to the base 19.

[0046] The third linear guide rail is arranged in the same direction as the crossbeam 1 along the moving direction of the bed 2, to ensure the smooth movement of the fixed drive seat 3 and the floating drive seat 4 along the bed 2.

[0047] like Figure 3 As shown, the base 19 is connected to the slider in the third linear guide via the set screw 15, and the set screw 15 is fixed by the nut 16.

[0048] In some embodiments, the drive mechanism is connected to the base via a second linear guide.

[0049] like Figure 7 As shown, in order to ensure the smooth movement of the drive mechanism relative to the base 19, two parallel second linear guides are provided, which are arranged along the length of the crossbeam 1. The second linear guide includes a guide rail 12 and a slider 11. The slider 11 is slidably connected to the guide rail 12, the drive mechanism is connected to the slider 11, and the guide rail 12 is connected to the base, so that the drive mechanism can move along the length of the crossbeam 1. Thus, when the parallelism of the third linear guide changes, the drive mechanism is prompted to move, ensuring the stability of the connection with the rack on the bed.

[0050] To further ensure the smooth movement of the drive mechanism, two sliders 11 are provided on each guide rail 12.

[0051] In some embodiments, the drive mechanism is connected to the elastic connector 7, which is also connected to the base 19, and the elastic connector 7 is always in a tensile state.

[0052] like Figure 8 , Figure 9 As shown, a tension spring fixing block 6 is provided on the base 19, one end of the elastic connector 7 is connected to the tension spring fixing block 6, and the other end of the elastic connector 7 is connected to the drive mechanism; the elastic connector 7 is always in a tensile state, ensuring that the drive mechanism and the rack on the bed are always tightly meshed, thus ensuring the stability of power transmission.

[0053] Among them, the elastic connector 7 can be a tension spring.

[0054] In some embodiments, the drive mechanism includes a power mechanism and a gear 9; the power mechanism is connected to the gear 9 and is capable of driving the gear 9 to rotate; a rack is provided on the bed 2, and the gear 9 is meshed with the rack; the power mechanism is connected to the base 19 and is capable of moving relative to the base 19.

[0055] The power mechanism includes a motor, a reducer 8, and a mounting plate 10. The motor is connected to the reducer 8, the reducer 8 is connected to the gear 9, the reducer 8 is fixed on the mounting plate 10, and the mounting plate 10 is connected to the base 19 and can move relative to the base 19.

[0056] like Figure 10 As shown, a speed reducer mounting hole is provided on the mounting plate 10. The speed reducer 8 is installed in the speed reducer mounting hole, and the output end of the speed reducer 8 extends out of the speed reducer mounting hole. The gear 9 is fixedly connected to the output shaft of the speed reducer 8. A second linear guide and two elastic connecting parts 7 are respectively provided on both sides of the speed reducer mounting hole. The slider 11 in the second linear guide is connected to the mounting plate 10, and the guide rail 12 in the second linear guide is connected to the base. One end of the elastic connecting part 7 is connected to the tension spring fixing block 6, and the other end of the elastic connecting part 7 is fixed to the mounting plate 10 by bolts 13, and the bolts 13 are fixed by nuts 14.

[0057] Among them, the first linear guide, the second linear guide, and the third linear guide all adopt high preload linear guides to achieve zero backlash and high rigidity transmission.

[0058] This invention discloses an automatic beam adjustment system for a laser cutting machine, which is installed on the bed of the laser cutting machine. By setting a fixed drive seat 3 and a floating drive seat 4 at both ends of the beam 1, the bases of the fixed drive seat 3 and the floating drive seat 4 are connected to the bed 2 through a third linear guide rail, which limits the movement of the drive mechanism in the fixed drive seat 3 and the floating drive seat 4 relative to the base, restricting torsional and lateral displacement, and realizing high-precision, high-stability, and high-rigidity ultra-long stroke motion. In addition, the pre-pressure of the elastic connector keeps the gear and rack in a constant meshing pre-tight state, automatically compensating for the installation, processing, and thermal deformation errors of the long stroke rack, without the need for manual adjustment of the clearance.

[0059] This invention proposes an automatic beam adjustment system for a laser cutting machine. By installing drive mechanisms at both ends of the beam, using guide rail sliders at the bottom of the beam for constraint, and employing high preload guidance on the linear guide rails, the system achieves triple anti-torsion of the beam, ensuring no swaying or deformation during high-speed operation and solving the beam torsion problem. One end of the beam uses a fixed drive seat, while the other end uses a floating drive seat, automatically absorbing installation errors and thermal expansion, avoiding stress concentration and component damage caused by rigid connections, and adaptively compensating for guide rail misalignment. All guide rail sliders (bed guide rails, floating side guide rails of the beam, and guide rail sliders below the drive components on both sides of the beam) employ a high preload level, eliminating gaps. The equipment maintains extremely high precision under high acceleration and high load, significantly improving dynamic rigidity. The system reduces the installation precision requirements of the bed guide rail racks, simplifies debugging, and ensures no precision degradation over long-term use, reducing installation and maintenance costs. It is particularly suitable for ultra-large format equipment, fundamentally addressing the industry pain point of difficulty in guaranteeing precision in ultra-long format equipment such as 12m, 16m, 20m, and 50m.

[0060] This invention also proposes a laser cutting machine, including an automatic beam adjustment system for a laser cutting machine proposed in this invention.

[0061] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. An automatic beam adjustment system for a laser cutting machine, characterized in that, Includes a crossbeam, a fixed drive seat, and a floating drive seat; Both the fixed drive seat and the floating drive seat include a base and a drive mechanism; the drive mechanism is connected to the base and can move relative to the base along the length of the crossbeam; both the base and the drive mechanism are connected to the bed, and the drive mechanism can drive the base to move along the bed. The first end of the crossbeam is connected to the base of the fixed drive seat; the second end of the crossbeam is connected to the base of the floating drive seat and can move relative to the base of the floating drive seat along the length of the crossbeam.

2. The automatic beam adjustment system for a laser cutting machine as described in claim 1, characterized in that, The base moves in the direction of the bed and is perpendicular to the length of the crossbeam.

3. The automatic beam adjustment system for a laser cutting machine as described in claim 1, characterized in that, The first end of the crossbeam is connected to the fixed block, and the fixed block is connected to the base of the fixed drive seat; The second end of the crossbeam is connected to the base of the floating drive seat via the first linear guide rail.

4. The automatic beam adjustment system for a laser cutting machine as described in claim 3, characterized in that, The second end of the crossbeam is connected to the slide plate, and the slide plate is connected to the slider in the first linear guide rail.

5. The automatic beam adjustment system for a laser cutting machine as described in claim 1, characterized in that, The drive mechanism is connected to the base via a second linear guide rail.

6. The automatic beam adjustment system for a laser cutting machine as described in claim 1, characterized in that, The drive mechanism is connected to the elastic connector, which is also connected to the base. The elastic connector is always in a state of tension.

7. The automatic beam adjustment system for a laser cutting machine as described in claim 1, characterized in that, The base is connected to the bed via a third linear guide rail.

8. The automatic beam adjustment system for a laser cutting machine as described in claim 1, characterized in that, The drive mechanism includes a power mechanism and gears; the power mechanism is connected to the gears and can drive the gears to rotate; a rack is provided on the bed, and the gears mesh with the rack; the power mechanism is connected to the base and can move relative to the base.

9. The automatic beam adjustment system for a laser cutting machine as described in claim 8, characterized in that, The power mechanism includes a motor, a reducer, and a mounting plate; the motor is connected to the reducer, the reducer is connected to a gear, the reducer is fixed on the mounting plate, the mounting plate is connected to the base, and can move relative to the base.

10. A laser cutting machine, characterized in that, The system includes an automatic beam adjustment system for a laser cutting machine as described in any one of claims 1-9.

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