A workpiece clamping device for a large-format ground rail laser cutting machine
Patent Information
- Application Number
- CN202522242299.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-23
AI Technical Summary
[0003]目前，现有大幅面地轨激光切割机的工件夹紧装置存在以下缺陷：传统装置多采用单侧气缸顶紧或手动螺旋夹紧，对于长度超过4m的大幅面工件，易因夹紧力分布不均导致工件在切割过程中产生微位移，造成切割尺寸误差，影响产品精度；同时，不同厚度、不同材质的工件需更换不同规格的夹紧组件，更换过程耗时较长，降低生产效率；而手动调节的夹紧装置需多人协作完成大幅面工件的定位与夹紧，操作强度大、耗时久，与激光切割机的高速切割特性不匹配
[0013]与现有技术相比，本实用新型的有益效果是：该大幅面地轨激光切割机工件夹紧装置，固定盘、斜槽、滑块与驱动杆配合，结合驱动件的双转子电机和反向螺纹杆，驱动四组夹块同步夹紧，使夹紧力均匀分布，避免工件微位移，解决了切割尺寸误差的问题，同时可适配不同尺寸的大幅面工件，无需更换夹紧组件，解决了更换组件耗时的问题；驱动件实现自动化驱动，无需多人协作手动调节，降低操作强度，提高夹紧效率，与激光切割机高速切割特性匹配，解决了操作耗时久的问题。
Smart Images
Figure CN224779624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser cutting equipment technology, specifically a workpiece clamping device for a large-format ground-rail laser cutting machine. Background Technology
[0002] Large-format floor-rail laser cutting machines are widely used in sheet metal processing, construction machinery, shipbuilding, and other industries due to their wide cutting range and high efficiency. They are mainly used for high-precision cutting and shaping of large-format metal sheets. Their working principle involves the movement of a floor rail driving the laser cutting head to complete the cutting trajectory on the workpiece surface. Stable clamping of the workpiece is the core prerequisite for ensuring cutting accuracy.
[0003] Currently, the workpiece clamping devices of existing large-format floor-rail laser cutting machines have the following defects: Traditional devices mostly use single-sided cylinder clamping or manual screw clamping. For large-format workpieces with a length exceeding 4m, uneven distribution of clamping force can easily cause micro-displacement of the workpiece during the cutting process, resulting in cutting size errors and affecting product accuracy. At the same time, different specifications of clamping components need to be replaced for workpieces of different thicknesses and materials, which takes a long time and reduces production efficiency. Manually adjustable clamping devices require multiple people to cooperate in positioning and clamping large-format workpieces, which is labor-intensive and time-consuming, and is not compatible with the high-speed cutting characteristics of laser cutting machines.
[0004] These problems make it difficult for existing clamping devices to meet the high-precision and high-efficiency cutting requirements of large-format workpieces. There is an urgent need for a clamping device that can achieve adaptive clamping, is stable and reliable, and is easy to operate. Utility Model Content
[0005] The purpose of this invention is to provide a workpiece clamping device for a large-format ground-rail laser cutting machine to solve the problems mentioned in the background art.
[0006] In view of the above problems, the technical solution proposed by this utility model is as follows: A workpiece clamping device for a large-format floor-rail laser cutting machine includes a fixed plate. The top surface of the fixed plate has four sets of inclined grooves, symmetrically distributed about a pair of central axes of the fixed plate. Slider blocks slide within each of the inclined grooves. The bottom surface of the fixed plate has a pair of drive rods, each with a transverse groove. Slider blocks on the same side slide within the same transverse groove. A drive element is provided between the pair of drive rods, driving the pair of drive rods to move synchronously. Clamping blocks are mounted on the top surface of the sliders. Fixing blocks with fixing holes are mounted at the four corners of the fixed plate, with the bottom surface of each fixing block located below the bottom surface of the drive rod. The fixed plate and the four sets of inclined grooves... The grooves provide a stable sliding track for the slider, and the four sets of inclined grooves are symmetrically distributed to ensure balanced force on the slider. The slider and the drive rod have a transverse groove, which allows the slider to slide along the inclined groove when the drive rod moves. The slider and the clamping block work together, and the slider moves synchronously with the clamping block to clamp the workpiece. The drive unit works with a pair of drive rods, which move synchronously to ensure that the sliders on both sides move synchronously and that the clamping force is evenly distributed. The fixed plate works with the fixed block, and the device can be securely installed through the fixing holes of the fixed block. The bottom surface of the fixed block is lower than the bottom surface of the drive rod to prevent the drive rod from contacting the mounting surface and to ensure the normal operation of the drive rod. This achieves the purpose of stably clamping large-format workpieces and ensuring cutting accuracy.
[0007] Furthermore, the driving component includes a dual-rotor motor mounted on the center of the bottom surface of the fixed disk via a base. Both output ends of the dual-rotor motor are connected to threaded rods with opposite threads. The drive rod and the threaded rods are threadedly engaged. The dual-rotor motor, through the base, cooperates with the fixed disk to achieve stable installation at the center of the bottom surface of the fixed disk. The two output ends of the dual-rotor motor, in conjunction with the pair of threaded rods, can simultaneously provide power to the pair of threaded rods. The opposite threads of the pair of threaded rods, coupled with the threaded engagement of the drive rods, allow the dual-rotor motor to drive the threaded rods to rotate, simultaneously moving the pair of drive rods closer to or further away from each other. This achieves clamping or releasing of the workpiece by the clamping block, ensuring precise and synchronized clamping action and improving clamping efficiency.
[0008] Furthermore, U-shaped blocks are installed at both ends of the drive rod, and limit grooves are opened on both sides of the fixed plate. The free end of the U-shaped block slides in the limit groove. The drive rod cooperates with the U-shaped block, and the U-shaped block provides limit support for the drive rod. The free end of the U-shaped block cooperates with the limit groove of the fixed plate. When the drive rod moves, the U-shaped block slides along the limit groove, which can limit the movement direction of the drive rod and prevent the drive rod from deviating or rotating when it moves. This ensures that the drive rod drives the slider to slide accurately, and improves the stability and accuracy of the clamping of the device.
[0009] Furthermore, the clamping block is L-shaped with an interior angle of 90 degrees. This L-shape and 90-degree interior angle, when combined with the corners of the workpiece, allows for clamping and limiting of the workpiece from two perpendicular directions. This increases the contact area between the clamping block and the workpiece, ensuring that the clamping force is applied more evenly to the workpiece. It also prevents the workpiece from tilting or shifting during clamping, thereby improving the stability of the workpiece clamping and ensuring the positional accuracy of the workpiece during the cutting process.
[0010] Furthermore, a baffle is installed on the bottom surface of the slider, and the baffle and the bottom surface of the drive rod are in contact. The slider cooperates with the baffle, and the baffle plays a longitudinal limiting role for the slider. The baffle is in contact with the bottom surface of the drive rod to prevent the slider from falling out of the inclined groove during sliding, ensuring that the slider is always in contact with the transverse groove of the drive rod, thereby ensuring that the slider drives the clamping block to achieve a stable clamping action and improving the reliability of the device.
[0011] Furthermore, the top surface of the inclined groove has grooves at both ends, and a roller is rotatably connected to each groove via a coil spring. A dustproof strip is wound around the outside of the roller, and the free end of the dustproof strip is connected to a slider. The inclined groove and the groove cooperate to provide installation space for the roller. The roller cooperates with the groove via the coil spring, and the coil spring can drive the roller to automatically reset. The roller cooperates with the dustproof strip, and the free end of the dustproof strip is connected to the slider. When the slider slides, it can pull the dustproof strip to expand or contract, thereby blocking the inclined groove and preventing dust and waste generated during the cutting process from entering the inclined groove, avoiding affecting the sliding performance of the slider and extending the service life of the device.
[0012] Furthermore, the dustproof belt and the inclined groove are of the same width. When the dustproof belt is unfolded, it can completely cover the opening of the inclined groove, avoiding gaps between the dustproof belt and the inclined groove. This ensures the dustproof and waste residue prevention effect, prevents dust and waste residue from entering the inclined groove through the gaps, and ensures the smooth sliding of the slider in the inclined groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The workpiece clamping device of this large-format ground-rail laser cutting machine, with the fixed plate, inclined groove, slider and drive rod cooperating, combined with the dual rotor motor and reverse threaded rod of the drive component, drives four sets of clamping blocks to clamp synchronously, so that the clamping force is evenly distributed, avoids the micro displacement of the workpiece, and solves the problem of cutting size error. At the same time, it can be adapted to large-format workpieces of different sizes without the need to replace the clamping components, thus solving the problem of time-consuming component replacement; the drive component realizes automated drive, without the need for multiple people to cooperate in manual adjustment, reducing the intensity of operation, improving clamping efficiency, and matching the high-speed cutting characteristics of the laser cutting machine, thus solving the problem of long operation time. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the workpiece clamping device for a large-format ground-rail laser cutting machine disclosed in this utility model embodiment; Figure 2 This is a bottom view of the workpiece clamping device for a large-format ground-rail laser cutting machine disclosed in this embodiment of the utility model. Figure 3 This is a top view of the workpiece clamping device for a large-format ground-rail laser cutting machine disclosed in this embodiment of the utility model. Figure 4 This is a cross-sectional structural schematic diagram of the workpiece clamping device for a large-format ground-rail laser cutting machine disclosed in an embodiment of this utility model; Figure 5 for Figure 4 A magnified schematic diagram of structure A in the middle.
[0015] In the diagram: 1. Fixed plate; 2. Limiting groove; 3. Inclined groove; 4. Fixed block; 5. U-shaped block; 6. Clamping block; 7. Dustproof belt; 8. Drive rod; 9. Slider; 10. Baffle; 11. Dual rotor motor; 12. Threaded rod; 13. Groove; 14. Reel. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figures 1-5 This utility model provides a technical solution: a workpiece clamping device for a large-format floor-rail laser cutting machine, including a fixed plate 1. The top surface of the fixed plate 1 has four sets of inclined grooves 3, symmetrically distributed about a pair of central axes of the fixed plate 1. Slider 9 slides within each of the inclined grooves 3. The bottom surface of the fixed plate 1 has a pair of drive rods 8, each with a transverse groove. Slider 9 on the same side slides within the same transverse groove. A drive element is provided between the pair of drive rods 8, driving the pair of drive rods 8 to move synchronously. A clamping block 6 is installed on the top surface of the slider 9. Fixing blocks 4 are installed at the four corners of the fixed plate 1. The fixing blocks 4 have… The fixing hole and the bottom surface of the fixing block 4 are located below the bottom surface of the drive rod 8. First, the fixing plate 1 is installed on the worktable of the large-format laser cutting machine through the fixing hole of the fixing block 4. Then, the large-format workpiece to be cut is placed on the top surface of the fixing plate 1, so that the workpiece is located between the four sets of clamping blocks 6. Then, the drive unit is started. The drive unit drives a pair of drive rods 8 to move synchronously towards the workpiece. When the drive rod 8 moves, its horizontal groove drives the slider 9 on the same side to slide along the inclined groove 3. The slider 9 drives the clamping blocks 6 on the top surface to move synchronously. As the clamping blocks 6 gradually approach the workpiece, they finally clamp and fix the workpiece from all sides, completing the workpiece clamping process.
[0018] As an embodiment of this utility model, the driving component further includes a dual-rotor motor 11 mounted on the center of the bottom surface of the fixed disk 1 via a base. Both output ends of the dual-rotor motor 11 are connected to threaded rods 12. The threads of the pair of threaded rods 12 are opposite to each other. The driving rods 8 and the threaded rods 12 are threadedly engaged. When it is necessary to clamp the workpiece, the dual-rotor motor 11 is started first. The two output ends of the dual-rotor motor 11 drive the pair of threaded rods 12 to rotate synchronously. Since the threads of the pair of threaded rods 12 are opposite to each other and are threadedly engaged with the driving rods 8, the rotation of the threaded rods 12 will drive the pair of driving rods 8 to move synchronously toward the dual-rotor motor 11. When it is necessary to release the workpiece, the dual-rotor motor 11 is controlled to reverse, driving the threaded rods 12 to rotate in the opposite direction, thereby driving the pair of driving rods 8 to move synchronously away from the dual-rotor motor 11, thus releasing the clamping block 6.
[0019] As an embodiment of this utility model, U-shaped blocks 5 are installed at both ends of the drive rod 8, and limiting grooves 2 are opened on both sides of the fixed disk 1. The free ends of the U-shaped blocks 5 slide in the limiting grooves 2. When the drive member drives the drive rod 8 to move, the U-shaped blocks 5 at both ends of the drive rod 8 will move synchronously with the drive rod 8. The free ends of the U-shaped blocks 5 slide in the limiting grooves 2 on both sides of the fixed disk 1. The limiting grooves 2 restrict the movement trajectory of the U-shaped blocks 5, so that the drive rod 8 can only move in a direction parallel to the threaded rod 12, preventing the drive rod 8 from deviating or rotating during the movement, ensuring stable thread engagement between the drive rod 8 and the threaded rod 12, and ensuring that the slider 9 slides accurately along the inclined groove 3.
[0020] As an embodiment of this utility model, the clamping block 6 is further L-shaped, and the inner angle of the clamping block 6 is 90 degrees. When the slider 9 drives the clamping block 6 to move towards the workpiece, the two vertical sides of the L-shaped clamping block 6 will gradually fit against the corners of the workpiece. Since the inner angle is 90 degrees, it is just right to match the right angle corners of the workpiece, thus limiting the workpiece from both horizontal and vertical directions. As the clamping block 6 continues to move, the clamping force is gradually applied, so that the workpiece is firmly clamped between the four sets of L-shaped clamping blocks 6, preventing the workpiece from shaking or shifting during the cutting process.
[0021] As an embodiment of this utility model, a baffle 10 is further installed on the bottom surface of the slider 9. The baffle 10 and the bottom surface of the drive rod 8 are in contact. When the slider 9 slides along the inclined groove 3, the baffle 10 on the bottom surface of the slider 9 is always in contact with the bottom surface of the drive rod 8. The baffle 10 prevents the slider 9 from moving upward, thus preventing the slider 9 from disengaging from the inclined groove 3 due to vibration or uneven force during the movement. This ensures that the slider 9 and the transverse groove of the drive rod 8 always maintain a cooperative state, so that the drive rod 8 can stably drive the slider 9 to slide, ensuring the continuity and stability of the clamping action.
[0022] As an embodiment of this utility model, further, the top surface of the inclined groove 3 has grooves 13 at both ends, and a roller 14 is rotatably connected to each groove 13 via a coil spring. A dustproof strip 7 is wound around the outside of the roller 14, and the free end of the dustproof strip 7 is connected to the slider 9. When the slider 9 slides along the inclined groove 3 to one end, the slider 9 pulls the dustproof strip 7 on one side, causing the roller 14 on that side to rotate and stretch the coil spring. The dustproof strip 7 unfolds from the roller 14, covering the part of the inclined groove 3 exposed after the slider 9 moves. At the same time, the coil spring on the other side retracts, driving the corresponding roller 14 to rotate and winding back the excess dustproof strip 7. When the slider 9 slides in the opposite direction, the above process is repeated to ensure that the inclined groove 3 is always covered by the dustproof strip 7, preventing dust and waste residue from entering.
[0023] As an embodiment of this utility model, the dustproof belt 7 and the inclined groove 3 are of equal width. Since the dustproof belt 7 and the inclined groove 3 are of equal width, when the slider 9 slides and drives the dustproof belt 7 to unfold, the dustproof belt 7 can completely cover the opening of the inclined groove 3 without obvious gaps. The dust and waste generated during the cutting process will be blocked outside the inclined groove 3 by the dustproof belt 7 and cannot enter the interior of the inclined groove 3, thereby preventing dust and waste from adhering to the slider 9 or the inner wall of the inclined groove 3, ensuring the smoothness of the slider 9 when sliding, and reducing wear.
[0024] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.
Claims
1. A workpiece clamping device for a large-format floor-rail laser cutting machine, characterized in that, The device includes a fixed disk (1), the top surface of which is provided with four sets of inclined grooves (3), and the four sets of inclined grooves (3) are symmetrically distributed about a pair of central axes of the fixed disk (1). A slider (9) slides in each of the inclined grooves (3). A pair of driving rods (8) are provided on the bottom surface of the fixed disk (1), and each pair of driving rods (8) has a transverse groove. The sliders (9) on the same side slide in the same transverse groove. A driving member is provided between the pair of driving rods (8), and the driving member drives the pair of driving rods (8) to move synchronously. A clamping block (6) is installed on the top surface of the slider (9). A fixing block (4) is installed at each of the four corners of the fixed disk (1). The fixing block (4) has a fixing hole, and the bottom surface of the fixing block (4) is located below the bottom surface of the driving rod (8).
2. The workpiece clamping device for a large-format floor-rail laser cutting machine according to claim 1, characterized in that, The driving component includes a dual-rotor motor (11) mounted on the center of the bottom surface of the fixed disk (1) via a base. Both output ends of the dual-rotor motor (11) are connected to threaded rods (12). The threads of the pair of threaded rods (12) are opposite to each other. The driving rod (8) and the threaded rods (12) are threadedly engaged.
3. The workpiece clamping device for a large-format floor-rail laser cutting machine according to claim 1, characterized in that, Both ends of the drive rod (8) are equipped with U-shaped blocks (5), and both sides of the fixed plate (1) are provided with limiting grooves (2). The free end of the U-shaped block (5) slides in the limiting groove (2).
4. The workpiece clamping device for a large-format floor-rail laser cutting machine according to claim 1, characterized in that, The clamp (6) is L-shaped, and the interior angle of the clamp (6) is 90 degrees.
5. The workpiece clamping device for a large-format floor-rail laser cutting machine according to claim 1, characterized in that, A baffle (10) is installed on the bottom surface of the slider (9), and the baffle (10) and the bottom surface of the drive rod (8) are in contact.
6. The workpiece clamping device for a large-format floor-rail laser cutting machine according to claim 1, characterized in that, The top surface of the inclined groove (3) has grooves (13) at both ends. Each groove (13) is connected to a roller (14) by a coil spring. A dustproof belt (7) is wrapped around the outside of the roller (14). The free end of the dustproof belt (7) is connected to the slider (9).
7. The workpiece clamping device for a large-format floor-rail laser cutting machine according to claim 6, characterized in that, The dustproof belt (7) and the inclined groove (3) are of the same width.