Automatic cleaning mechanism of laser cutting machine

Abstract

The utility model relates to the technical field of precise laser cutting machines, in particular to an automatic cleaning mechanism of a laser cutting machine, which comprises a machine table, a working table and a cleaning mechanism, the working table is arranged on the surface of the machine table, the cleaning mechanism is arranged on the working table, and the cleaning mechanism is provided with a smoke dust suction pipe used for removing smoke dust generated by processing. The cleaning mechanism is further provided with a sweeping assembly capable of moving in a reciprocating mode, the sweeping assembly is provided with a plurality of rotating brushes, the rotating brushes on the two sides rotate oppositely through a transmission mechanism, residues are swept to the two sides, a quick disassembly structure is arranged at the connecting position of the rotating brushes, quick disassembly and replacement are convenient, and the sweeping assembly can sweep the surface of the machine table in a machining gap. The cleaning mechanism of the laser cutting machine is simple in structure, can achieve real-time cleaning, and meanwhile can remove smoke dust, ensure that the surface of the machine table is clean, and ensure the machining quality of the laser cutting machine.

Description

Technical Field

[0001] This utility model belongs to the field of laser cutting machine technology, specifically an automatic cleaning mechanism for laser cutting machines. Background Technology

[0002] During laser cutting of substrates such as copper and aluminum, the high temperatures inevitably produce molten metal slag and micron-sized debris. Aluminum, due to high-temperature oxidation, easily forms hard oxide slag, while copper and aluminum debris often have sharp edges due to their ductility. If these residues are not thoroughly removed and accumulate on the processing table or support structure, they will cause the following two serious problems:

[0003] Residual debris causes the contact surface between the substrate and the platform to be partially suspended, causing the actual height of the substrate to deviate from the laser focal plane, resulting in uncontrolled precision phenomena such as kerf width fluctuations and increased edge burrs. More seriously, some debris may embed into the substrate positioning area, interfering with the mechanical positioning reference and causing a cumulative effect of dimensional errors in continuous batch processing.

[0004] As the core carrier of electronic components, the surface finish of copper-aluminum substrates directly determines the adhesion of plating layers and the reliability of soldering. Metal debris remaining on the substrate surface can act as hard protrusions and scratch the substrate surface during placement or processing. Such scratches not only cause cosmetic defects but can also damage functional areas of precision circuit layers, leading to decreased yield in subsequent processes or even functional failure of the product, significantly increasing manufacturing costs.

[0005] Current conventional cleaning methods typically involve air gun blowing or brush cleaning, which significantly reduces equipment uptime due to downtime for cleaning. Therefore, there is a need to design an automated cleaning mechanism capable of performing efficient cleaning operations. Summary of the Invention

[0006] Based on this, this solution provides an automatic cleaning mechanism for laser cutting machines, which can reciprocate and rotate in different directions on both sides for cleaning without manual intervention. It can clean the machine during processing intervals and prevent molten slag from solidifying on the machine surface.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] An automatic cleaning mechanism for a laser cutting machine includes: a machine base, a worktable, and a cleaning mechanism. The worktable is disposed on the surface of the machine base, and the cleaning mechanism is disposed on the worktable. The cleaning mechanism is equipped with a dust extraction pipe for removing dust generated during processing. The dust extraction pipe is connected to an external fan to extract exhaust gas. The cleaning mechanism is also equipped with a reciprocating cleaning component, which is equipped with multiple rotating brushes.

[0009] Optionally, in one embodiment of the present invention, the cleaning assembly includes a first linear motor, a second motor, a plurality of rotating brushes, a mounting housing, and a plurality of synchronous pulleys and a synchronous belt disposed within the mounting housing. One end of the mounting housing is slidably connected to the first linear motor. A first rotating shaft passes through the center of each synchronous pulley. Each rotating shaft is provided with at least one synchronous pulley. The synchronous belt is meshed and driven by the synchronous pulleys. The second motor is disposed at one end of the mounting housing, and the output end of the second motor is driven by the synchronous belt.

[0010] Optionally, in one embodiment of the present invention, the two rotating brushes located in the middle are each provided with intermeshing transmission gears, so that the two rotating brushes on both sides rotate in opposite directions.

[0011] Optionally, in one embodiment of the present invention, a chip collection box is provided below the workbench.

[0012] Optionally, in one embodiment of the present invention, the rotating brush is a disc-shaped nylon brush.

[0013] Optionally, in one embodiment of the present invention, a guide rod is slidably connected to the other end of the mounting housing away from the second motor, and the two ends of the guide rod are fixedly connected to the surface of the machine base.

[0014] Optionally, in one embodiment of the present invention, the mounting housing includes a main structure and sliding structures at both ends, and the main structure and the sliding structures are fixedly connected by screws to facilitate quick assembly and disassembly of the main structure.

[0015] Optionally, in one embodiment of the present invention, a quick-release structure is provided between the rotating brush and the rotating shaft to achieve quick assembly and disassembly.

[0016] Compared with the prior art, the automatic cleaning mechanism for a laser cutting machine provided by this utility model has the following characteristics:

[0017] Without manual intervention, it can automatically complete the cleaning of the workbench according to the control signal. It integrates smoke and dust removal and debris removal functions, and has a complete cleaning function. Multiple rotating brushes can cover the width of the workbench to ensure no cleaning dead corners. The two rotating brushes on both sides can rotate in opposite directions. The main structure of the mounting housing and the sliding structure can be quickly separated, which is convenient for the inspection or replacement of internal brushes, synchronous pulleys and other components. The rotating brushes are connected to the first rotating shaft through a quick-release structure, making the replacement of individual brushes simple and quick. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top view of the overall structure of Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of the cleaning component structure in Embodiment 1 of this utility model;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of region A;

[0022] Figure 4 This is a schematic diagram of the internal structure of the machine tool;

[0023] Reference numerals in the attached drawings: 1. Machine base; 101. Funnel structure; 102. Support plate; 103. Slider guide rail; 2. Worktable; 3. First linear motor; 301. Guide rod; 4. Second motor; 5. Mounting housing; 5. Main structure; 501. Sliding structure; 502. Synchronous pulley; 503. Synchronous belt; 504. First rotating shaft; 505. Rotating brush; 6. Second rotating shaft; 601. Spring; 602. Fixing pin; 603. Chip collection box; 7. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0025] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. Example 1

[0026] Because the cleaning efficiency of the existing laser cutting machine's worktable is relatively low, which can easily affect the equipment's efficiency, an automatic cleaning mechanism suitable for laser cutting machines was designed. The specific solution is as follows:

[0027] like Figure 1-4 As shown, an automatic cleaning mechanism for a laser cutting machine includes: a machine base 1, a worktable 2, and a cleaning mechanism. The worktable 2 is disposed on the surface of the machine base 1. In actual laser cutting equipment, a gantry-type three-axis cutting mechanism is also included. The gantry-type three-axis cutting mechanism is installed on the surface of the machine base 1 and is equipped with a laser cutting head located above the worktable 2. The cleaning mechanism is disposed on the worktable 2 and is equipped with a dust extraction pipe for removing dust generated during processing. The dust extraction pipe is connected to an external fan to extract exhaust gas. The cleaning mechanism is also equipped with a reciprocating cleaning component, which is equipped with multiple rotating brushes 6.

[0028] In this embodiment, the workbench 2 has a concave structure, which can concentrate the small debris and slag generated during cutting within the workbench 2. The surface of the workbench 2 has a grid-like structure, allowing most of the small debris or slag to pass through the workbench 2 and fall below. In another embodiment, the workbench 2 is designed as an elevated structure, eliminating the grid plate setting. The area below the plate placement part is empty. The cleaning component is located between the workbench 2 and the surface of the machine base 1, and the cleaning component can perform real-time cleaning operations on the surface of the machine base 1.

[0029] In this embodiment, the smoke and dust removal pipe is integrated into one side of the workbench 2. The smoke and dust are forced to flow into the smoke and dust removal pipe by negative pressure. A narrow and flat exhaust hole is opened on one side of the workbench 2, which is also the air inlet of the smoke and dust removal pipe. The smoke and dust removal pipe is connected to an external fan and completes the dust removal operation by negative pressure. In other solutions, the smoke and dust removal pipe is integrated into one side of the laser cutting head and moves with the laser cutting head to perform the smoke and dust removal operation.

[0030] The cleaning assembly includes a first linear motor 3, a second motor 4, multiple rotating brushes 6, a mounting housing 5, and multiple synchronous pulleys 503 and a synchronous belt 504 disposed within the mounting housing 5. One end of the mounting housing 5 is slidably connected to the first linear motor 3. A first rotating shaft 505 passes through the center of each synchronous pulley 503. Each first rotating shaft 505 is provided with at least one synchronous pulley 503. The synchronous belt 504 is meshed with and driven by the synchronous pulleys 503. The second motor 4 is disposed at one end of the mounting housing 5, and the output end of the second motor 4 is connected to the synchronous belt 504. In terms of transmission connection, specifically, the first linear motor 3 controls the reciprocating movement of the mounting housing 5, and the second motor 4 causes multiple rotating brushes 6 to perform rotating cleaning operations. Six rotating brushes 6 are installed at the bottom of the mounting housing 5, and three rotating brushes 6 are provided on each side. The second motor 4 drives the rotating brushes 6 on one side to rotate counterclockwise, thereby driving the rotating brushes 6 on the other side to rotate counterclockwise and move simultaneously to clean the entire workbench 2. The coverage length of the six rotating brushes 6 is the same as the width of the workbench 2 to ensure that there are no dead corners in the cleaning.

[0031] The two rotating brushes 6 located in the middle are equipped with meshing transmission gears, which make the two rotating brushes 6 rotate in opposite directions. This can sweep the debris and particles on the worktable 2 to both sides of the rotating brushes 6. During the sweeping process, the debris can also fall through the mesh of the worktable 2. The second motor 4 is a servo motor. During operation, it maintains a relatively low speed to prevent debris and particles from splashing and falling onto the mechanical components, such as the lead screw, which would increase the wear of the moving parts.

[0032] A chip collection box 7 is provided below the workbench 2. The chips and slag swept away by the cleaning component are collected in the chip collection box 7 for easy handling by the staff. The chip collection box 7 is placed inside the machine base 1. Inside the machine base 1, a funnel structure 101 is provided below the workbench 2. A door panel that can be opened and closed is provided on one side of the machine base 1. The door panel can be opened to make it easy to take out the chip collection box 7 for emptying. In this embodiment, the chip collection box 7 is a square structure with an open top and a handle on the front side. A sliding support plate 102 is provided at the bottom of the chip collection box 7. Heavy-duty slider guide rails 103 are provided between the bottom two sides of the support plate 102 and the machine base 1. Even if there are a lot of chips in the chip collection box 7, it can still be easily moved out.

[0033] The rotating brush 6 is a disc-shaped nylon brush, and the workbench 2 is a grid-like plate structure. The nylon bristles are highly elastic and can deform with the undulations of the workbench to clean up debris deep into the crevices.

[0034] A guide rod 301 is slidably connected to the other end of the mounting housing 5, which is away from the second motor 4. The two ends of the guide rod 301 are fixedly connected to the surface of the machine base 1, so that the mounting housing 5 can move smoothly.

[0035] In this embodiment, the gantry-type three-axis cutting mechanism, the first linear motor 3, and the guide rod 301 on the other side are all equipped with bellows covers to prevent dust, residue, etc. from adhering to the mechanism components and reduce component wear.

[0036] The mounting housing 5 includes a main structure 501 and sliding structures 502 at both ends. The main structure 501 and the sliding structure 502 are fixedly connected by screws to facilitate quick disassembly and assembly of the main structure. When it is necessary to inspect or repair the rotating brush 6 or internal mechanism components, the main structure 501 can be removed separately for replacement and repair.

[0037] A quick-release structure is provided between the rotating brush 6 and the rotating shaft to achieve rapid disassembly and assembly. Specifically, the rear of the rotating brush 6 is connected to a second rotating shaft 601, which is equipped with a flat key. The lower end of the first rotating shaft 505 is provided with an assembly hole for assembling the second rotating shaft 601. A flat keyway is provided on the inner wall of the assembly hole, and pin holes are provided on the first rotating shaft 505 and the second rotating shaft 601. A spring 602 is provided at the front end of the second rotating shaft 601. After the second rotating shaft 601 is inserted into the assembly hole, a fixing pin 603 is inserted into the pin hole, and a slot is provided on the fixing pin 603. After the fixing pin 603 is inserted, part of the side wall of the assembly hole can be inserted into the slot. Through the force of the spring 602, the first rotating shaft 505 and the second rotating shaft 601 are stably connected. A pull ring is connected to the rear end of the fixing pin 603 for easy disassembly.

[0038] Working principle:

[0039] After the board is placed in the machine, the laser cutting mechanism cuts the board according to the cutting settings. During the cutting process, the dust extraction pipe absorbs the dust generated during the cutting. After the board is cut, the central control automatically starts the cleaning component according to the signal that the operation is completed. The first linear motor 3 controls the entire installation to move horizontally, while the second motor 4 controls multiple rotating brushes 6 to rotate and clean the surface of the worktable 2. The installation housing 5 moves back and forth once to complete the cleaning operation.

[0040] The automatic cleaning mechanism in this solution integrates smoke and dust removal and debris sweeping functions, solving the problem of cleaning gaseous smoke and solid residue generated during the cutting process.

[0041] The concave design of the worktable 2 structure helps the chips and slag generated during cutting to naturally concentrate in the worktable 2 area.

[0042] The six rotating brushes 6 are arranged with the same width as the workbench 2. Together with the reciprocating translational motion of the linear motor, they ensure that the entire surface of the workbench 2 is cleaned without any omissions and with full coverage. The rotating brushes 6 on both sides rotate in opposite directions, sweeping the debris to both sides, avoiding the accumulation of debris in the center. This also conforms to the grid structure characteristics of the workbench 2, which facilitates the debris to fall through the mesh into the chip collection box 7. The chip collection box 7 below the funnel collects all the waste materials for centralized processing.

[0043] A quick-release structure is provided between the rotating brush 6 and the first rotating shaft 505 to enable quick brush replacement. Example 2

[0044] In this embodiment, the automatic cleaning mechanism is basically the same as that in Embodiment 1. The difference is that the transmission gear is eliminated, and the synchronous pulley 503 and synchronous belt 504 are replaced by sprockets and chains for transmission. The second motor 4 is located on the side of the mounting housing 5, and the output end of the second motor 4 is located between the two middle rotating brushes 6. The two middle rotating brushes 6 are equipped with spur gears. The output end of the second motor 4 is connected to a worm gear, which meshes with the spur gears of the two rotating brushes 6 to drive the two middle rotating brushes 6 to rotate in opposite directions through the second motor 4. At the same time, the two ends of the main structure 501 of the mounting housing 5 are slidably connected to the sliding structure 502, and are equipped with locking screws, which can uniformly adjust the height of all rotating brushes 6.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An automatic cleaning mechanism for a laser cutting machine, characterized in that, include: The machine, workbench, and cleaning mechanism are provided. The workbench is located on the surface of the machine, and the cleaning mechanism is located on the workbench. The cleaning mechanism is equipped with a dust extraction pipe for removing dust generated during processing. The dust extraction pipe is connected to an external fan to extract exhaust gas. The cleaning mechanism is also equipped with a reciprocating cleaning component, which is equipped with multiple rotating brushes.

2. The automatic cleaning mechanism for a laser cutting machine according to claim 1, characterized in that: The cleaning assembly includes a first linear motor, a second motor, multiple rotating brushes, a mounting housing, and multiple synchronous pulleys and a synchronous belt disposed within the mounting housing. One end of the mounting housing is slidably connected to the first linear motor. A first rotating shaft passes through the center of each synchronous pulley, and each rotating shaft is provided with at least one synchronous pulley. The synchronous belt is meshed with and driven by the synchronous pulleys. The second motor is disposed at one end of the mounting housing, and the output end of the second motor is driven by the synchronous belt.

3. The automatic cleaning mechanism for a laser cutting machine according to claim 1, characterized in that: The two rotating brushes located in the middle are equipped with intermeshing transmission gears, which cause the two rotating brushes to rotate in opposite directions.

4. The automatic cleaning mechanism for a laser cutting machine according to claim 1, characterized in that: A chip collection box is provided below the workbench.

5. The automatic cleaning mechanism for a laser cutting machine according to claim 2, characterized in that: The rotating brush is a disc-shaped nylon brush.

6. The automatic cleaning mechanism for a laser cutting machine according to claim 2, characterized in that: A guide rod is slidably connected to the other end of the mounting housing away from the second motor, and the two ends of the guide rod are fixedly connected to the surface of the machine base.

7. The automatic cleaning mechanism for a laser cutting machine according to claim 2, characterized in that: The mounting housing includes a main structure and sliding structures at both ends. The main structure and the sliding structures are fixedly connected by screws to facilitate quick assembly and disassembly of the main structure.

8. The automatic cleaning mechanism for a laser cutting machine according to claim 2, characterized in that: The rotating brush is provided with a quick-release structure between itself and the rotating shaft to enable rapid assembly and disassembly.

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