A stable desktop numerical control drilling and milling laser engraving machine

Abstract

The application relates to the technical field of laser engraving machines, and discloses a stable desktop numerical control drilling and milling laser engraving machine, which comprises a machine body and a workbench installed on the inner wall of the machine body. A clamping mechanism is arranged on the upper surface of the workbench at the front end along the length direction of the workbench and is used for fixing workpieces of different sizes. The stable desktop numerical control drilling and milling laser engraving machine can effectively reduce the reflectivity of materials to laser by spraying a black light-absorbing coating on the surface of the workpiece, can ensure that laser energy is fully converted into heat energy, can solve the problems of low energy utilization rate and blurred lines during the engraving of high-reflectivity materials, can realize accurate engraving of smooth metal surfaces, can realize automatic identification of the shape and size of the workpiece, automatic spraying and self-checking after spraying through the setting of a visual detection module and a spraying assembly, can avoid manual operation errors, can ensure that the light-absorbing coating uniformly covers the machining area, and can reduce the labor intensity of workers.

Description

Technical Field

[0001] This application relates to the field of laser engraving machine technology, specifically a stable benchtop CNC drilling and milling laser engraving machine. Background Technology

[0002] Metals such as aluminum and copper have a reflectivity of over 90% for visible light, and even as high as 98% for infrared lasers (such as CO2 lasers at 10.6 μm and fiber lasers at 1.06 μm). This means that most of the laser energy is reflected, with only a small amount being absorbed by the material and converted into heat energy, resulting in insufficient heat for processing.

[0003] An existing patent (publication number: CN214769713U) discloses a stable benchtop CNC drilling and milling laser engraving machine, relating to the field of laser engraving machine technology. It includes a worktable, an engraving machine body, and a flip-type clamping mechanism. The flip-type clamping mechanism is fixedly installed on the top of the worktable, and the engraving machine body is fixedly installed on the back of the worktable. The flip-type clamping mechanism includes two upright plates, the bottom ends of which are fixedly installed to the top of the worktable. This stable benchtop CNC drilling and milling laser engraving machine, by setting clamping plates, uses a gear motor to drive two lead screws through gear rods to move the nut sleeves in opposite directions or outwards. This allows the distance between the two clamping jaws on the same side to be adjusted according to the specifications of the material to be clamped, enabling the engraving machine to clamp materials of different shapes and sizes. This makes the engraving machine suitable for various material specifications, avoiding the need to purchase multiple machines and thus improving the practicality of the engraving machine.

[0004] The aforementioned device causes two lead screws to drive the nut sleeve to move towards or away from each other, allowing the distance between the two clamping jaws on the same side to be adjusted according to the specifications of the material to be clamped. This enables the engraving machine to clamp materials of different shapes and is applicable to materials of various specifications. However, during the processing, some products, such as aluminum or copper, which are highly reflective materials, will reflect part of the laser, resulting in low energy utilization and potentially causing blurred or incomplete textures. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a stable benchtop CNC drilling and milling laser engraving machine, which has advantages such as high processing efficiency and solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, this application provides the following technical solution: a stable benchtop CNC drilling and milling laser engraving machine, including a machine body and a worktable installed on the inner wall of the machine body, wherein a clamping mechanism is provided at the front end of the upper surface of the worktable along its length direction for fixing workpieces of different sizes;

[0007] A linear electric slide rail is provided along the length of the rear end of the upper surface of the workbench, and a spraying assembly is provided in front of the linear electric slide rail.

[0008] The spraying assembly includes a linear module, one end of which is slidably connected to a linear electric slide rail. A slider is slidably connected to the bottom of the linear module along its length. An atomizing nozzle is installed at the bottom of the slider, and one end of the atomizing nozzle is fixedly connected to a connecting pipe.

[0009] A connecting plate is fixedly connected to the outer surface of the slider, and a vision inspection module is installed at one end of the connecting plate;

[0010] A cleaning component is provided on one side of the linear module.

[0011] Furthermore, the cleaning assembly includes two fixing plates. One end of each fixing plate is fixedly connected to one side of the linear module. The same cleaning tube is slidably inserted between the other ends of the two fixing plates. Multiple nozzles are fixedly connected to the outer surface of the cleaning tube. A compression spring is installed between one end of the cleaning tube and its adjacent fixing plate. A delivery tube is fixedly connected to one end of the cleaning tube and is connected to an external cleaning water delivery pump.

[0012] The above solution uses a linear electric slide rail to move the cleaning tube along the Y-axis, which enables automatic rinsing of milling paint residue on the product surface.

[0013] Furthermore, a drive frame is fixedly connected to the upper surface of one of the fixed plates, an extrusion shaft is rotatably connected to the bottom of the drive frame, a cam is fixedly connected to the outer surface of the extrusion shaft, the cam abuts against one end of the cleaning tube, and a motor is fixedly installed on the top of the drive frame, with the output end of the motor fixedly connected to the top end of the extrusion shaft.

[0014] The above solution can drive the cleaning pipe to reciprocate, thereby filling the spray blind spot between two adjacent nozzles and improving the rinsing effect.

[0015] Furthermore, the clamping mechanism includes a fixed shell, the two ends of which are fixedly connected to the workbench by external bolts. A bidirectional threaded rod is rotatably connected between the two ends of the fixed shell. A clamping plate is threaded to both ends of the bidirectional threaded rod. The two clamping plates are perpendicular to the axis of the bidirectional threaded rod. A cylinder is fixedly connected to the side of the two clamping plates that is far apart from each other, and a limit plate is fixedly connected to the output end of each of the two cylinders. The two limit plates are slidably connected along the length of their adjacent clamping plates.

[0016] The above solution uses a bidirectional threaded rod to drive two clamping plates closer together, which can fix the two sides of the product. The back of the fixing shell abuts against the front of the product, and the setting of two limiting plates can achieve the purpose of fixing the product.

[0017] Furthermore, the sides of the two clamping plates that are close to each other are both serrated.

[0018] The above solution increases the coefficient of friction between the clamping plate and the workpiece surface, preventing slippage when clamping on smooth surfaces and improving the processing stability of high-reflectivity materials.

[0019] Furthermore, the upper surface of the workbench is provided with distributed and through threaded holes.

[0020] The above solution allows for flexible adjustment of the installation positions of the clamping mechanism, linear electric slide rail, and cleaning components.

[0021] Furthermore, the outer surface of the cleaning tube is chamfered.

[0022] The above solution can prevent the cleaning station from rotating during axial movement.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This stable benchtop CNC drilling and milling laser engraving machine effectively reduces the reflectivity of the material to the laser by spraying a black light-absorbing coating on the surface of the workpiece, ensuring that the laser energy is fully converted into heat energy. This solves the problems of low energy utilization and blurred texture when engraving highly reflective materials, and achieves precise engraving on smooth metal surfaces.

[0025] By setting up a vision inspection module and a spraying component, the automatic identification of the shape and size of the workpiece, automatic spraying, and self-inspection after spraying are achieved, avoiding human operation errors, ensuring that the light-absorbing coating evenly covers the processing area, and reducing the labor intensity of workers.

[0026] By setting up limit plates and clamping plates, it is possible to quickly clamp and fix workpieces of different lengths and widths, adapt to the processing needs of workpieces of various specifications, and improve the versatility of the equipment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the body structure of this application;

[0028] Figure 2 This is a cross-sectional view of the overall structure of this application;

[0029] Figure 3 The workbench structure of this application Figure 1 ;

[0030] Figure 4 The workbench structure of this application Figure 2 ;

[0031] Figure 5 This is a structural diagram of the clamping mechanism in this application;

[0032] Figure 6 This is a structural diagram of the spraying and cleaning components of this application.

[0033] In the picture:

[0034] 1. Machine body; 2. Worktable; 201. Threaded hole;

[0035] 3. Clamping mechanism; 301. Fixed housing; 302. Bidirectional threaded rod; 303. Clamping plate; 304. Cylinder; 305. Limiting plate;

[0036] 4. Linear electric slide rail;

[0037] 5. Spraying components; 501. Linear module; 502. Slider; 503. Atomizing nozzle; 504. Connecting pipe;

[0038] 6. Connecting plate; 7. Vision inspection module;

[0039] 8. Cleaning components; 801. Fixing plate; 802. Cleaning tube; 803. Nozzle; 804. Compression spring; 805. Delivery tube;

[0040] 9. Drive frame; 10. Extrusion shaft; 11. Cam. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] Please see Figures 1-6This embodiment of a stable benchtop CNC drilling, milling, and laser engraving machine includes a machine body 1 and a worktable 2 mounted on the inner wall of the machine body 1. A clamping mechanism 3 is provided along the length of the upper surface of the worktable 2 for fixing workpieces of different sizes. The clamping mechanism 3 includes a fixing shell 301, the two ends of which are fixedly connected to the worktable 2 by external bolts. A bidirectional threaded rod 302 is rotatably connected between the two ends of the fixing shell 301. One end of the bidirectional threaded rod 302 is fixedly connected to an external motor output end. The motor can be fixed to the worktable 2 by bolts. Clamping plates 303 are threadedly connected to both ends of the bidirectional threaded rod 302, and the two clamping plates 303 are perpendicular to the axis of the bidirectional threaded rod 302. Two clamping plates 303 are fixedly connected to cylinders 304 along their length on the side away from each other. The output ends of the two cylinders 304 are fixedly connected to limit plates 305. The two limit plates 305 are slidably connected along the length of their adjacent clamping plates 303. The two clamping plates 303 are driven to move closer to each other by the bidirectional threaded rod 302, which can fix the two sides of the product. The back of the fixing shell 301 abuts against the front end of the product and the setting of the two limit plates 305 can achieve the purpose of fixing the product. The side of the two clamping plates 303 that moves closer to each other is serrated to increase the friction coefficient between the clamping plates 303 and the workpiece surface, avoid slippage when clamping smooth surfaces, and improve the processing stability of high reflective materials.

[0043] A linear electric slide rail 4 is provided along the length of the rear end of the upper surface of the workbench 2. A spraying assembly 5 is provided in front of the linear electric slide rail 4. The spraying assembly 5 includes a linear module 501. One end of the linear module 501 is slidably connected to the linear electric slide rail 4. The linear module 501 and the linear electric slide rail 4 are connected to an external control system. A slider 502 is slidably connected below the linear module 501 along its length. An atomizing nozzle 503 is installed at the bottom of the slider 502. One end of the atomizing nozzle 503 is fixedly connected to... There is a connecting pipe 504, which connects to the external engraving and milling paint conveying equipment. Through the setting of the linear module 501 and the linear electric slide rail 4, the X and Y axis movement of the atomizing nozzle 503 can be realized to achieve the purpose of spraying engraving and milling paint on the product surface. The engraving and milling paint is a black light-absorbing coating material such as carbon-based paint or ferrite paint. Through spraying, a light-absorbing layer with a thickness of 0.1-0.3mm is formed, which effectively reduces the reflectivity of aluminum / copper materials to laser, ensures that laser energy is fully converted into heat energy, and improves engraving accuracy.

[0044] A connecting plate 6 is fixedly connected to the outer surface of the slider 502. A vision inspection module 7 is installed at one end of the connecting plate 6. The size and shape of the workpiece can be identified in advance through the vision inspection module 7. Then, the product is automatically sprayed through the atomizing nozzle 503. After the spraying is completed, the vision inspection module 7 performs quality inspection again to ensure that the product processing surface is completely sprayed. The vision inspection module 7 is connected to the external control system.

[0045] A cleaning component 8 is provided on one side of the linear module 501. The cleaning component 8 includes two fixing plates 801. One end of the two fixing plates 801 is fixedly connected to one side of the linear module 501. The other end of the two fixing plates 801 is slidably inserted with the same cleaning tube 802. Multiple nozzles 803 are fixedly connected to the outer surface of the cleaning tube 802. After the product is processed, the nozzles 803 can clean the engraving and milling paint sprayed on the product surface. A compression spring 804 is installed between one end of the cleaning tube 802 and its adjacent fixing plate 801 for automatic reset of the cleaning tube 802. One end of the cleaning tube 802 is fixedly connected to a conveying pipe 805, which is connected to an external cleaning water conveying pump. With the above settings, the cleaning tube 802 is moved along the Y-axis by the linear electric slide rail 4, which can realize the automatic rinsing of the engraving and milling paint residue sprayed on the product surface.

[0046] A drive frame 9 is fixedly connected to the upper surface of one of the fixed plates 801. A pressing shaft 10 is rotatably connected to the bottom of the drive frame 9. A cam 11 is fixedly connected to the outer surface of the pressing shaft 10. The cam 11 abuts against one end of the cleaning tube 802. A motor is fixedly installed on the top of the drive frame 9. The output end of the motor is fixedly connected to the top of the pressing shaft 10. With the above settings, the cleaning tube 802 can be driven to reciprocate, thereby making up for the spray blind spot between two adjacent nozzles 803 and improving the rinsing effect. The outer surface of the cleaning tube 802 is beveled. With the above settings, the cleaning tube 802 can be prevented from rotating during axial movement. The upper surface of the worktable 2 is provided with distributed and through threaded holes 201 for flexibly adjusting the installation position of the clamping mechanism 3, the linear electric slide rail 4 and the cleaning component 8.

[0047] The working principle of the above embodiment is as follows: The operator places the workpiece to be processed on the worktable 2, so that its front end contacts the fixed shell 301. The bidirectional threaded rod 302 in the clamping mechanism 3 drives the two sawtooth clamping plates 303 to move towards each other, thereby clamping and fixing the workpiece in the left and right directions. The cylinder 304 simultaneously pushes the limiting plate 305 to slide along the length of the clamping plate 303, which, together with the back of the fixed shell 301, abuts against the front end of the workpiece, thereby fixing workpieces of different sizes. The control system drives the vision detection module 7 to move above the workpiece along the linear electric slide rail 4 to scan and identify the size, shape and processing area of ​​the workpiece. The linear electric slide rail 4 drives the linear module 501 to move along the Y-axis, and the linear module 501 drives the atomizing nozzle 503 to move along the X-axis. Black light-absorbing coating material is conveyed through connecting pipe 504 and sprayed onto the workpiece surface to ensure that laser energy is fully converted into heat energy, thereby improving engraving accuracy. After spraying, the vision inspection module 7 scans the processing surface again to verify the integrity of the coating coverage. Subsequently, the machine body 1 processes the workpiece. After processing, the cleaning component 8 is activated. The conveying pipe 805 is connected to the cleaning water pump, which drives the cleaning pipe 802 to slide axially along the fixed plate 801. Multiple nozzles 803 simultaneously spray high-pressure water to rinse away the residual engraving coating on the processing surface. The motor drives the cam 11 to rotate, squeezing the end of the cleaning pipe 802. With the reset action of the compression spring 804, the cleaning pipe 802 reciprocates, eliminating the spray blind zone between adjacent nozzles 803 and achieving the purpose of cleaning the residual coating.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stable benchtop CNC drilling, milling, and laser engraving machine, comprising a machine body (1) and a worktable (2) mounted on the inner wall of the machine body (1), characterized in that: The upper surface of the workbench (2) is provided with a clamping mechanism (3) along its length, which is used to fix workpieces of different sizes. The workbench (2) has a linear electric slide rail (4) arranged along its length at the rear end of its upper surface, and a spraying assembly (5) is arranged in front of the linear electric slide rail (4). The spraying assembly (5) includes a linear module (501), one end of which is slidably connected to a linear electric slide rail (4), and a slider (502) is slidably connected below the linear module (501) along its length direction. An atomizing nozzle (503) is installed at the bottom of the slider (502), and one end of the atomizing nozzle (503) is fixedly connected to a connecting pipe (504). A connecting plate (6) is fixedly connected to the outer surface of the slider (502), and a vision inspection module (7) is installed at one end of the connecting plate (6); A cleaning component (8) is provided on one side of the linear module (501).

2. The stable benchtop CNC drilling, milling, and laser engraving machine according to claim 1, characterized in that: The cleaning assembly (8) includes two fixing plates (801). One end of the two fixing plates (801) is fixedly connected to one side of the linear module (501). The other ends of the two fixing plates (801) are slidably connected to the same cleaning tube (802). Multiple nozzles (803) are fixedly connected to the outer surface of the cleaning tube (802). A compression spring (804) is installed between one end of the cleaning tube (802) and its adjacent fixing plate (801). One end of the cleaning tube (802) is fixedly connected to a delivery tube (805). The delivery tube (805) is connected to an external cleaning water delivery pump.

3. A stable benchtop CNC drilling, milling, and laser engraving machine according to claim 2, characterized in that: A drive frame (9) is fixedly connected to the upper surface of one of the fixed plates (801), and a pressing shaft (10) is rotatably connected to the bottom of the drive frame (9). A cam (11) is fixedly connected to the outer surface of the pressing shaft (10). The cam (11) abuts against one end of the cleaning tube (802). A motor is fixedly installed on the top of the drive frame (9), and the output end of the motor is fixedly connected to the top end of the pressing shaft (10).

4. A stable benchtop CNC drilling, milling, and laser engraving machine according to claim 1, characterized in that: The clamping mechanism (3) includes a fixed shell (301), the two ends of which are fixedly connected to the workbench (2) by external bolts. A bidirectional threaded rod (302) is rotatably connected between the two ends of the fixed shell (301). A clamping plate (303) is threadedly connected to both ends of the bidirectional threaded rod (302). The two clamping plates (303) are perpendicular to the axis of the bidirectional threaded rod (302). A cylinder (304) is fixedly connected to the side of the two clamping plates (303) that is far away from each other. A limit plate (305) is fixedly connected to the output end of the two cylinders (304). The two limit plates (305) are slidably connected along the length of their adjacent clamping plates (303).

5. A stable benchtop CNC drilling, milling, and laser engraving machine according to claim 4, characterized in that: The two clamps (303) are both serrated on the side that is close to each other.

6. A stable benchtop CNC drilling, milling, and laser engraving machine according to claim 1, characterized in that: The upper surface of the workbench (2) is provided with threaded holes (201) arranged in a distributed manner and penetrating through.

7. A stable benchtop CNC drilling, milling, and laser engraving machine according to claim 2 or 3, characterized in that: The outer surface of the cleaning tube (802) is beveled.

Images