A stage and laser cutting machine

Abstract

This utility model discloses a worktable and a laser cutting machine, belonging to the field of laser cutting machine technology. It includes a worktable frame, multiple support units for supporting workpieces, a tilting mechanism, a grinding mechanism, and a displacement mechanism. Each support unit includes a bearing shaft rotatably mounted on the worktable and multiple trays fixed to the bearing shaft via connectors. The tilting mechanism is located on the worktable and drives the bearing shaft to rotate. The grinding mechanism includes a grinding head and a first motor that drives the grinding head to rotate. This utility model allows the trays that originally provided support to be rotated downwards, and the lower trays to be rotated upwards. Then, the displacement mechanism drives the grinding mechanism to move, allowing the grinding head to move along the trays and grind away the residual slag from laser cutting, keeping the tray end faces flat and without protruding parts. Maintenance of the trays can be completed without manual removal, saving time and effort.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting machine technology, specifically to a platform and a laser cutting machine. Background Technology

[0002] In the processing, manufacturing, and assembly of large workpieces (such as large welded parts, castings, and steel structural components), the worktable is a crucial supporting fixture. These worktables typically consist of a robust frame and multiple pallets for directly supporting the workpiece. For laser cutting machine worktables, the high-energy laser beam emitted by the laser cutting head heats and melts the workpiece, resulting in the residue of molten workpiece debris on the worktable. This affects the flatness of the support, leading to inaccurate workpiece positioning, increased processing errors, and even impacting the quality of the final product. Therefore, regularly maintaining, grinding, and finishing the pallets to restore their surface flatness and smoothness is essential for ensuring production quality and process stability.

[0003] Currently, the maintenance and polishing of these types of platform trays mainly relies on traditional manual methods. Operators need to use handheld pneumatic or electric tools such as angle grinders to polish the surface of each tray one by one. This method is inefficient, as the large number and wide distribution of trays make manual movement and positioning of polishing tools time-consuming. Utility Model Content

[0004] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a platform and laser cutting machine that, by incorporating a grinding mechanism, can clean residues from the pallet without disassembling it, thus maintaining the pallet's flatness.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a platform, comprising: bedstead; Multiple support units for carrying workpieces, each support unit including a bearing shaft rotatably mounted on a bed frame and multiple trays fixed to the bearing shaft by connectors, wherein the multiple bearing shafts are parallel and perpendicular to the length direction of the bed frame; A tilting mechanism, mounted on the bed frame, is used to drive the load-bearing shaft to rotate; A grinding mechanism for grinding a pallet, the grinding mechanism including a grinding head and a first motor for driving the grinding head to rotate; The displacement mechanism, mounted on the bed frame, is used to drive the grinding mechanism to move so that the grinding head grinds the support plate.

[0006] Preferably, the displacement mechanism includes a first displacement mechanism and a second displacement mechanism, wherein the first displacement mechanism drives the second displacement mechanism to move along the length direction of the bed frame, and the second displacement mechanism drives the first motor to move along the axis of the bearing shaft.

[0007] Preferably, the first displacement mechanism includes: Two parallel first guide rails are fixed to the bed frame below the support unit; Two first sliders are slidably mounted on two first guide rails, respectively; Two first chain drive mechanisms are used to drive two first sliders to move at the same speed along the first guide rail.

[0008] Preferably, the second displacement mechanism includes: The mounting bracket has its two ends fixed to two first sliders respectively; The second guide rail is fixed on the mounting bracket and parallel to the bearing shaft; The second slider is slidably mounted on the second guide rail, and the first motor is fixed on the second slider; The mounting frame is equipped with a second chain drive mechanism for driving the second slider to move along the second guide rail. The second chain drive mechanism is driven to rotate by a second motor fixed on the mounting frame.

[0009] Preferably, the two first chain drive mechanisms achieve the same speed transmission through a drive shaft, which is rotatably mounted on the bed frame, and one of the chain drive mechanisms is driven to rotate by a third motor fixed on the bed frame.

[0010] Preferably, the grinding head includes a fixed sleeve, on which two grinding discs are fixed, and a grinding wheel is fixed on the fixed sleeve between the two grinding discs. The grinding discs are used to grind the side walls of the pallet, and the grinding wheel is used to grind the ends of the pallet. The fixed sleeve is fixedly installed on the motor shaft of the first motor.

[0011] Preferably, the connector includes multiple locking sleeves, the locking sleeves are fixed on the bearing shaft, the locking sleeves are fixed with ear plates, and the support plate is fixed to the ear plates by bolts.

[0012] Preferably, the flipping mechanism includes: The flip-up shaft is rotatably mounted on one side of the bed frame and perpendicular to the load-bearing shaft. Multiple first bevel gears are fixed on multiple bearing shafts respectively; Multiple second bevel gears are fixed on the flipping shaft and mesh with multiple first bevel gears respectively; The fourth motor, fixed on the bed frame, is used to drive the rotation of the tilting shaft.

[0013] Preferably, the bed frame is fixed with a protective shell for covering the first bevel gear and the second bevel gear.

[0014] A laser cutting machine includes the aforementioned stage.

[0015] The beneficial effects of this utility model are as follows: The platform designed in this utility model has a grinding mechanism, a flipping mechanism, and a displacement mechanism. By rotating the support unit through the flipping mechanism, the tray that originally served as the upper support can be rotated to the lower position, and the lower tray can be rotated to the upper position. Then, the displacement mechanism drives the grinding mechanism to move, so that the grinding head can move along the tray to grind away the laser cutting residue attached to the tray, keeping the end face of the tray flat and without protruding parts. The tray can be maintained without manual removal, saving time and effort. The tray is fixed to the bearing shaft by the connector to prevent the tray from falling off during the flipping process. The first displacement mechanism and the second displacement mechanism work together to drive the grinding mechanism to move along the length of the bed frame and along the axial direction of the bearing shaft, thereby grinding all the trays in sequence. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top-view perspective view of a platform provided for an embodiment of the present utility model.

[0018] Figure 2 A perspective view of a platform from below, provided for an embodiment of this utility model.

[0019] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0020] Figure 4 This is a top view of a platform provided for an embodiment of the present utility model.

[0021] Figure 5 for Figure 4 Sectional view at point AA.

[0022] Figure 6 for Figure 5 A magnified view of a section at point B.

[0023] Figure 7 This is a schematic diagram of a tilting mechanism in a platform provided for an embodiment of the present utility model.

[0024] Explanation of reference numerals in the attached figures: 1. Bed frame; 2. Support unit; 21. Bearing shaft; 22. Tray; 23. Connector; 231. Locking sleeve; 232. Ear plate; 3. Grinding head; 31. Fixing sleeve; 32. Grinding disc; 33. Grinding wheel; 4. First motor; 5. First displacement mechanism; 51. First guide rail; 52. First slider; 53. First chain drive mechanism; 54. Drive shaft; 55. Third motor; 6. Second displacement mechanism; 61. Mounting bracket; 62. Second guide rail; 63. Second slider; 64. Second chain drive mechanism; 65. Second motor; 7. Tilting shaft; 8. First bevel gear; 9. Second bevel gear; 10. Fourth motor; 11. Protective shell. Detailed Implementation

[0025] 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.

[0026] Example 1 like Figures 1 to 7 As shown, Embodiment 1 of this utility model provides a platform, which is mainly used in laser cutting equipment to support and fix the workpiece to be processed, and can automatically clean the support plate 22 supporting the workpiece after processing.

[0027] The worktable includes a bed frame 1, multiple support units 2, a tilting mechanism, a grinding mechanism, and a displacement mechanism. The bed frame 1 is an integral support structure, rectangular in shape, constructed by welding or bolting, possessing sufficient rigidity and stability. Multiple support units 2 are arranged at intervals along the length of the bed frame 1. Each support unit 2 includes a bearing shaft 21 and multiple support plates 22. The bearing shaft 21 is rotatably mounted on the bed frame 1 via bearing seats, with its axis aligned with the width direction of the bed frame 1. The multiple support plates 22 are fixedly mounted on the bearing shaft 21 via connectors 23, used to directly support workpieces.

[0028] The tilting mechanism is located on one side of the bed frame 1 and includes a tilting shaft 7, multiple first bevel gears 8, multiple second bevel gears 9, and a fourth motor 10. The tilting shaft 7 is rotatably mounted on the bed frame 1 via bearing seats, and its axis is parallel to the length direction of the bed frame 1. A first bevel gear 8 is installed at one end of each bearing shaft 21, and a second bevel gear 9 is installed on the tilting shaft 7 at the corresponding position of each first bevel gear 8, and the two mesh with each other. The fourth motor 10 is connected to the tilting shaft 7 via a reducer, driving the tilting shaft 7 to rotate, which in turn drives all bearing shafts 21 to rotate synchronously through the bevel gear pairs, realizing the tilting position change of the upper and lower support plates 22.

[0029] The grinding mechanism includes a grinding head 3 and a first motor 4 that drives its rotation. A displacement mechanism is mounted on the bed frame 1 and is used to move the entire grinding mechanism. The displacement mechanism includes a first displacement mechanism 5 and a second displacement mechanism 6. The first displacement mechanism 5 drives the second displacement mechanism 6 to move along the length of the bed frame 1, and the second displacement mechanism 6 drives the first motor 4 and the grinding head 3 on it to move axially along the bearing shaft 21.

[0030] The working process is as follows: When it is necessary to clean the laser cutting slag on the pallet 22, the flipping mechanism is activated. The fourth motor 10 drives the flipping shaft 7 to rotate, and through bevel gear transmission, all bearing shafts 21 rotate synchronously by 180 degrees. The pallet 22, which was originally located at the top to support the workpiece, rotates to the bottom, while the pallet 22, which was originally located at the bottom, rotates to the top. Subsequently, the displacement mechanism starts working, driving the grinding mechanism to move, so that the high-speed rotating grinding head 3 contacts the surface of the pallet 22 that has rotated to the bottom. The residual slag adhering to the end face and sides of the pallet 22 is removed by mechanical grinding, restoring it to a flat surface. This process does not require disassembling any pallet 22, has a high degree of automation, and significantly improves cleaning efficiency.

[0031] Example 2 Based on Embodiment 1, Embodiment 2 further optimizes and details the specific structure of the displacement mechanism.

[0032] like Figure 2 and Figure 3 As shown, the first displacement mechanism 5 includes two parallel first guide rails 51, two first sliders 52, and two sets of first chain drive mechanisms 53. The two first guide rails 51 are bolted to the bed frame 1 below the support unit 2, extending in the same direction as the length of the bed frame 1. The two first sliders 52 are slidably mounted on the two first guide rails 51. The two sets of first chain drive mechanisms 53 are used to drive the two first sliders 52 to move synchronously along the first guide rails 51. To ensure that the moving speeds of the two first sliders 52 are absolutely consistent, a drive shaft 54 ​​is provided. This drive shaft 54 ​​is rotatably mounted on the bed frame 1 via bearings, and the driven sprockets of the two sets of first chain drive mechanisms 53 are fixed to the drive shaft 54. The driving sprocket in one set of first chain drive mechanisms 53 is driven by a third motor 55 fixed to the bed frame 1. The third motor 55 transmits power synchronously to the other set of first chain drive mechanisms 53 through the drive shaft 54, thereby ensuring that the two first sliders 52 move synchronously as a rigid whole.

[0033] The second displacement mechanism 6 is mounted on the first displacement mechanism 5. It includes a mounting frame 61, a second guide rail 62, a second slider 63, and a second chain drive mechanism 64. The two ends of the mounting frame 61 are fixedly connected to the two first sliders 52, allowing it to be moved along the length of the bed frame 1 by the first displacement mechanism 5. The second guide rail 62 is fixedly mounted on the mounting frame 61, its extension direction being parallel to the axis of the bearing shaft 21. The second slider 63 is slidably mounted on the second guide rail 62, and the first motor 4 is vertically fixed to the second slider 63 via a bracket. The second chain drive mechanism 64 is mounted on the mounting frame 61 and is used to drive the second slider 63 to move along the second guide rail 62. This second chain drive mechanism 64 is driven by a second motor 65 fixed on the mounting frame 61.

[0034] When the third motor 55 starts, the two sets of first chain drive mechanisms 53 drive the entire mounting frame 61 and its second displacement mechanism 6 to move along the length of the bed frame 1 to the work position where the pallet 22 to be ground is located. Then, the second motor 65 starts, driving the second chain drive mechanism 64, which drives the second slider 63 and its first motor 4 and grinding head 3 to move axially along the bearing shaft 21, so that the grinding head 3 can pass over the surface to be ground of all pallets 22 under this work position, and finally realize the full coverage automated grinding of all pallets 22 by the grinding head 3.

[0035] Example 3 Based on Embodiment 1 and Embodiment 2, this embodiment refines the grinding mechanism and some connection details, and enhances the protective performance of the equipment.

[0036] The grinding head 3 is directly mounted on the motor shaft of the first motor 4 via a fixing sleeve 31, and torque is transmitted via a key connection. The grinding head 3 mainly includes a fixing sleeve 31, two grinding discs 32, and a grinding wheel 33. The fixing sleeve 31 is a cylindrical component, and its central hole mates with the motor shaft. The two disc-shaped grinding discs 32 are respectively fixedly mounted on the outer ends of the fixing sleeve 31. A circular grinding wheel 33 is fixedly mounted in the middle of the fixing sleeve 31, located between the two grinding discs 32. The outer circumferential surfaces of the two grinding discs 32 are used to grind and clean the two side wall surfaces of the pallet 22, while the middle grinding wheel 33 is used to grind and clean the end face of the pallet 22 (i.e., the upper surface that directly contacts the workpiece). This structural design can process multiple surfaces of the pallet 22 simultaneously, resulting in higher cleaning efficiency.

[0037] The connector 23, used to reliably fix the support plate 22 to the bearing shaft 21, includes multiple locking sleeves 231. Each locking sleeve 231 is fixed to the bearing shaft 21 by an interference fit or key connection. Two ear plates 232 are welded to the outer circumference of each locking sleeve 231, and the ear plates 232 have through holes. The bottom of the support plate 22 has corresponding connecting holes. High-strength bolts are passed through the through holes of the ear plates 232 and the connecting holes of the support plate 22, and the nuts are tightened to securely install the support plate 22 onto the bearing shaft 21. This connection method ensures that the support plate 22 will not loosen or fall off even during frequent rotation of the bearing shaft 21.

[0038] To further improve the safety and reliability of the equipment, a protective shell 11 is installed on the bed frame 1. This protective shell 11 covers all the meshing first bevel gears 8 and second bevel gears 9, effectively preventing foreign objects from entering the meshing area and damaging the gears. It also prevents operators from accidentally contacting moving parts, thus providing superior safety performance.

[0039] Example 4 This utility model provides a laser cutting machine in embodiment four, which includes the platform described in any of the above embodiments. Because the laser cutting machine uses a platform with automatic grinding and cleaning functions, it can maintain the flatness of the support surface of the pallet 22 for a long time, thereby ensuring the precision of laser cutting and the quality of workpiece processing, while significantly reducing equipment maintenance costs and downtime.

[0040] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A platform, characterized in that, include: bedstead; Multiple support units for carrying workpieces, each support unit including a bearing shaft rotatably mounted on a bed frame and multiple trays fixed to the bearing shaft by connectors, wherein the multiple bearing shafts are parallel and perpendicular to the length direction of the bed frame; A tilting mechanism, mounted on the bed frame, is used to drive the load-bearing shaft to rotate; A grinding mechanism for grinding a pallet, the grinding mechanism including a grinding head and a first motor for driving the grinding head to rotate; The displacement mechanism, mounted on the bed frame, is used to drive the grinding mechanism to move so that the grinding head grinds the support plate.

2. The platform as described in claim 1, characterized in that, The displacement mechanism includes a first displacement mechanism and a second displacement mechanism. The first displacement mechanism drives the second displacement mechanism to move along the length of the bed frame, and the second displacement mechanism drives the first motor to move along the axis of the bearing shaft.

3. A platform as described in claim 2, characterized in that, The first displacement mechanism includes: Two parallel first guide rails are fixed to the bed frame below the support unit; Two first sliders are slidably mounted on two first guide rails, respectively; Two first chain drive mechanisms are used to drive two first sliders to move at the same speed along the first guide rail.

4. A platform as described in claim 3, characterized in that, The second displacement mechanism includes: The mounting bracket has its two ends fixed to two first sliders respectively; The second guide rail is fixed on the mounting bracket and parallel to the bearing shaft; The second slider is slidably mounted on the second guide rail, and the first motor is fixed on the second slider; The mounting frame is equipped with a second chain drive mechanism for driving the second slider to move along the second guide rail. The second chain drive mechanism is driven to rotate by a second motor fixed on the mounting frame.

5. A platform as described in claim 3, characterized in that, The two first chain drive mechanisms achieve the same speed transmission through a drive shaft, which is rotatably mounted on the bed frame. One of the chain drive mechanisms is driven to rotate by a third motor fixed on the bed frame.

6. A platform as described in claim 1, characterized in that, The grinding head includes a fixed sleeve, on which two grinding discs are fixed. A grinding wheel is fixed on the fixed sleeve between the two grinding discs. The grinding discs are used to grind the side walls of the pallet, and the grinding wheel is used to grind the ends of the pallet. The fixed sleeve is fixedly installed on the motor shaft of the first motor.

7. A platform as described in claim 1, characterized in that, The connector includes multiple locking sleeves, which are fixed on the bearing shaft. Ear plates are fixed on the locking sleeves, and the support plate is fixed to the ear plates by bolts.

8. A platform as described in claim 1, characterized in that, The flipping mechanism includes: The flip-up shaft is rotatably mounted on one side of the bed frame and perpendicular to the load-bearing shaft. Multiple first bevel gears are fixed on multiple bearing shafts respectively; Multiple second bevel gears are fixed on the flipping shaft and mesh with multiple first bevel gears respectively; The fourth motor, fixed on the bed frame, is used to drive the rotation of the tilting shaft.

9. A platform as described in claim 8, characterized in that, The bed frame is fixed with a protective shell for covering the first bevel gear and the second bevel gear.

10. A laser cutting machine, characterized in that, The platform includes any one of claims 1 to 7.

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