Laser engraving machine

Abstract

The invention discloses a laser engraving machine, and belongs to the technical field of laser engraving. A laser engraving machine comprises a base and further comprises an outer cover fixedly installed at the upper end of the base, an engraving head is installed in the outer cover, and a base fan is fixedly provided with a laser emitter matched with the engraving head. The mounting seat is fixedly connected to the base, a mounting groove is formed in the mounting seat, an engraving disc is mounted at an upper end opening of the mounting groove, through holes which are uniformly distributed are formed in the engraving disc, negative pressure holes are formed in the rear wall of the mounting seat, and the air suction ends of the negative pressure holes face the mounting groove and the upper surface and the lower surface of the engraving disc. A pollution discharge hole communicated with the mounting groove is formed in the bottom of the base; a workpiece is automatically adsorbed to the surface of the engraving disc, the workpiece can be automatically fixed, in the engraving process, even if small-amplitude vibration occurs, an engraved object cannot move, and then the engraving precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of laser engraving, and in particular to a laser engraving machine. Background Art

[0002] Compared with traditional engraving machines, laser engraving uses the energy released when the laser beam is emitted to the surface of the workpiece to melt and evaporate the workpiece to achieve the purpose of engraving. It has the characteristics of high precision, fast engraving, no restrictions on engraving patterns, low processing costs, etc. The engraved text or pattern has no scratches, the surface of the object is still smooth, and the surface will not wear out. Therefore, laser engraving machines have gradually replaced traditional engraving equipment and are widely used in all walks of life.

[0003] During the engraving process, the laser engraving machine first places the object to be engraved, then emits laser light through the laser head above to illuminate the object, and then engraves by moving the laser head.

[0004] However, the existing laser engraving machines on the market are often disturbed by external factors during the engraving process, such as the large movement of staff, or workers operating other equipment passing by. At this time, the engraving machine will vibrate slightly, and the engraved object will easily move, resulting in a decrease in engraving accuracy. In this case, if the engraved object is fixed by a fixture or clamping device before engraving, it will greatly affect the engraving efficiency.

[0005] In view of this, we propose a laser engraving machine. Summary of the invention

[0006] The purpose of the present invention is to solve the problem in the prior art that when the engraving machine vibrates slightly, the object to be engraved will be displaced, resulting in a decrease in engraving accuracy, and a laser engraving machine is proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A laser engraving machine comprises a base, and also comprises: an outer cover fixedly mounted on the upper end of the base, wherein an engraving head is mounted inside the outer cover, and a laser emitter matched with the engraving head is fixedly mounted on the base; a mounting seat fixedly connected to the base, wherein a mounting groove is provided on the mounting seat, an engraving disk is mounted on the upper end of the mounting groove, and the engraving disk is provided with evenly distributed through holes, a negative pressure hole is provided on the rear wall of the mounting seat, and an air suction end of the negative pressure hole faces the mounting groove and the upper and lower surfaces of the engraving disk, and a sewage discharge hole connected with the mounting groove is provided at the bottom of the base.

[0009] In order to ensure that the workpiece is stably engraved, preferably, an exhaust pipe is provided on the rear wall of the outer cover, a negative pressure device is installed between the exhaust pipe and the negative pressure hole, and an air filter is installed at the input end of the negative pressure device.

[0010] In order to facilitate the movement of the engraving head, preferably, a crossbeam is slidably installed on the upper end of the mounting seat, a slide is slidably installed on the crossbeam, and the engraving head is fixedly installed on the slide, wherein synchronous belts are installed on both sides of the crossbeam and the upper end of the mounting seat, the crossbeam and the slide are respectively fixedly connected to the belts of two sets of synchronous belts, and a motor for driving the pulley on the synchronous belt to rotate is fixedly installed on the mounting seat and the crossbeam.

[0011] In order to improve the movement accuracy of the engraving head, further, two symmetrically arranged rotating seats are fixedly connected to the mounting seat, the rotating seat and the mounting seat are integrally formed, and a transmission shaft is rotatably installed on the two rotating seats. The motor output shaft on the mounting seat is fixedly connected to the transmission shaft, and the two sets of synchronous belts on the mounting seat are connected through the transmission shaft.

[0012] In order to improve the stability of the laser transmitter, preferably, a vertically arranged heat dissipation frame is fixedly provided on the rear wall of the mounting base, a radiator is installed in the heat dissipation frame, and an exhaust port aligned with the exhaust end of the radiator is provided at the lower end of the base, wherein a spiral heat dissipation pipe is fixedly installed on the outer wall of the laser transmitter, a water tank is fixedly installed on the base, a water pump is fixedly installed on the water tank, a water shortage protection switch is fixedly installed on the base, and the water pump, the spiral heat dissipation pipe, the radiator and the water shortage protection switch are connected in series through pipes.

[0013] In order to improve the operating stability of the control device, further, a protective cover is fixedly installed on the base, a blower is fixedly installed on the base, the output end of the blower extends into the air inlet of the engraving head, and the side walls of the protective cover and the outer cover are both provided with side holes.

[0014] In order to facilitate observation of the engraving process, preferably, a top cover is rotatably mounted on the top of the outer cover, and a transparent window is provided on the top cover.

[0015] In order to facilitate taking out and placing the workpiece on the engraving disk, preferably, a box cover is rotatably mounted on the front end surface of the outer cover, and the outer wall of the box cover is provided with a heat dissipation hole connected to the mounting groove.

[0016] In order to isolate and protect the laser emitter, preferably, the base fan is fixedly connected with a partition, and the partition is located between the laser emitter and the mounting seat.

[0017] In order to facilitate the normal use of the engraving head, further, a first lens is fixedly mounted on the base, a second lens perpendicular to the first lens is fixedly mounted on the crossbeam, the output end of the laser transmitter faces the first lens, and the second lens faces the input end of the engraving head.

[0018] Compared with the prior art, the present invention provides a laser engraving machine having the following beneficial effects:

[0019] 1. The laser engraving machine uses a negative pressure fan to suck air from the negative pressure hole, and the negative pressure hole will suck air from the upper and lower surfaces of the engraving plate and the mounting slot. On the one hand, it can absorb some of the heat and dust generated during the engraving process. On the other hand, negative pressure will be generated in the mounting slot, thereby automatically adsorbing the workpiece on the surface of the engraving plate, and automatically completing the workpiece fixation. During the engraving process, even if a small vibration occurs, the engraved object will not move, thereby ensuring the engraving accuracy.

[0020] 2. The laser engraving machine uses a water pump to pump the liquid in the water tank into the spiral heat pipe. The coolant in the spiral heat pipe will pass through the radiator and the water shortage protection switch in turn, and finally flow back to the water tank. When cooling through the spiral heat pipe, it can take away part of the temperature generated by the laser transmitter, thereby effectively dissipating the heat of the laser transmitter and indirectly improving the engraving accuracy of the engraving head.

[0021] 3. The laser engraving machine uses a blower to suck air into the protective cover, which then sucks air through the side holes and blows the air to the air inlet of the engraving head. The engraving head can then blow the smoke and dust generated by engraving to the surroundings through the airflow, facilitating subsequent engraving work and dissipating the heat of the engraving head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the axonometric structure of a laser engraving machine proposed by the present invention from a first perspective;

[0023] Figure 2 A schematic diagram of the axonometric structure of a laser engraving machine proposed by the present invention from a second viewing angle;

[0024] Figure 3 A schematic diagram of the partial axonometric structure of a laser engraving machine proposed by the present invention Figure 1 ;

[0025] Figure 4 A schematic diagram of the partial axonometric structure of a laser engraving machine proposed by the present invention Figure 2 ;

[0026] Figure 5 A schematic diagram of the axonometric structure of a mounting base of a laser engraving machine proposed by the present invention Figure 1 ;

[0027] Figure 6 A schematic diagram of the axonometric structure of a mounting base of a laser engraving machine proposed by the present invention Figure 2 ;

[0028] Figure 7 A schematic diagram of the partial axonometric structure of a laser engraving machine proposed by the present invention Figure 3 ;

[0029] Figure 8 A schematic diagram of the partial axonometric structure of a laser engraving machine proposed by the present invention Figure 4 ;

[0030] Fig. 9 This is a schematic diagram of the axonometric structure of a blower fan of a laser engraving machine proposed by the present invention;

[0031] Fig.10 This is a schematic diagram of the axonometric structure of a laser transmitter of a laser engraving machine proposed by the present invention;

[0032] Fig.11 A schematic diagram of the isometric structure of a water tank of a laser engraving machine proposed by the present invention;

[0033] Fig.12 A schematic diagram of the axonometric structure of a mounting base of a laser engraving machine proposed by the present invention Figure 3 .

[0034] In the figure: 1. base; 2. outer cover; 3. mounting seat; 4. laser transmitter; 5. mounting slot; 6. drain hole; 7. engraving plate; 8. crossbeam; 9. slide; 10. motor; 11. synchronous belt; 12. first lens; 13. second lens; 14. negative pressure hole; 15. exhaust pipe; 16. negative pressure equipment; 17. air filter; 18. spiral heat pipe; 19. water tank; 20. radiator; 21. water shortage protection switch; 22. water pump; 23. exhaust port; 24. protective cover; 25. control equipment; 26. blower fan; 27. rotating seat; 28. transmission shaft; 29. ​​heat dissipation frame; 30. top cover; 31. transparent window; 32. box cover; 33. heat dissipation hole; 34. side hole; 35. engraving head; 36. partition; 37. pulley; 38. V-shaped groove. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Example:

[0038] Reference Figure 1-Figure 8 A laser engraving machine includes a base 1 made of metal material, which may be made of stainless steel, and further includes: an outer cover 2 for shielding a laser device, which is fixedly mounted on the upper end of the base 1, wherein an engraving head 35 for completing the engraving work is installed in the outer cover 2, and a laser emitter 4 matched with the engraving head 35 is fixedly mounted on the base 1, and the laser emitter 4 enables the engraving head 35 to emit a laser beam, and its specific model may be a fiber laser YLP-20; a mounting seat 3 fixedly connected to the base 1, wherein a mounting groove 5 is provided on the mounting seat 3, and an engraving disk 7 is installed at the upper end of the mounting groove 5, and the engraving disk 7 is provided with evenly distributed through holes, and the shape of the through holes is a longitudinally arranged circular hole, or a honeycomb shape, and a negative pressure hole 14 is provided on the rear wall of the mounting seat 3, and the suction end of the negative pressure hole 14 faces the mounting groove 5 and the upper and lower surfaces of the engraving disk 7, and a sewage discharge hole 6 connected to the mounting groove 5 is provided at the bottom of the base 1.

[0039] Specifically, when in use, the workpiece is placed on the engraving disk 7, and then the laser engraving of the workpiece can be completed through the engraving head 35. During the engraving process, the negative pressure hole 14 is sucked by a negative pressure pump or a negative pressure fan, and the negative pressure hole 14 will suck air from the upper and lower surfaces of the engraving disk 7 and the mounting groove 5. On the one hand, it can absorb part of the heat and dust generated during the engraving process. On the other hand, negative pressure will be generated in the mounting groove 5, so that the workpiece is automatically adsorbed on the surface of the engraving disk 7, and the fixation of the workpiece can be automatically completed. During the engraving process, even if a small vibration occurs, the engraved object will not be displaced, thereby ensuring the engraving accuracy. At the same time, the through hole also plays a role in gas diversion. When the negative pressure hole 14 generates negative pressure, the negative pressure in the area below the engraving disk 7 can be made relatively uniform through the through hole, and will not be concentrated in a small area. Part of the particles generated by the engraving will pass through the through hole and fall into the mounting groove 5, and then be discharged from the drainage hole 6 at the bottom of the mounting groove 5.

[0040] Reference Figure 2 , Figure 3 as well as Figure 8An exhaust pipe 15 is provided on the rear wall of the outer cover 2, and a negative pressure device 16 is installed between the exhaust pipe 15 and the negative pressure hole 14. The negative pressure device 16 is a negative pressure fan or a negative pressure pump, and an air filter element 17 is installed at the input end of the negative pressure device 16.

[0041] Therefore, when in use, the negative pressure device 16 is started, and the negative pressure device 16 can inhale air from the surface of the mounting groove 5 and the engraving plate 7 through the negative pressure hole 14, and then discharge the air from the exhaust pipe 15. During this period, the air filter element 17 can filter out the odor in the gas to prevent the odorous air from directly polluting the air.

[0042] Reference Figure 3 and Figure 4 A crossbeam 8 is slidably mounted on the upper end of the mounting seat 3, a slide 9 is slidably mounted on the crossbeam 8, and an engraving head 35 is fixedly mounted on the slide 9, wherein a synchronous belt 11 is mounted on both sides of the crossbeam 8 and the upper end of the mounting seat 3, and the synchronous belt 11 is mainly composed of two pulleys and a synchronous belt, the crossbeam 8 and the slide 9 are respectively fixedly connected to the belts of the two sets of synchronous belts 11, and a motor 10 for driving the pulley on the synchronous belt 11 to rotate is fixedly mounted on the mounting seat 3 and the crossbeam 8.

[0043] Specifically, when the engraving head 35 needs to be translated along both sides of the mounting seat 3, the motor 10 on the mounting seat 3 is started, and the motor 10 can drive the synchronous belts 11 on both sides of the mounting seat 3 to run, and the synchronous belts 11 on both sides can drive the beam 8 to move linearly through the belts, and the beam 8 can drive the engraving head 35 to move linearly. When the motor 10 on the beam 8 is started, the synchronous belt 11 on the beam 8 can drive the slide 9 to translate through the belt, and the translation direction is perpendicular to the movement direction of the beam 8, and the slide 9 can drive the engraving head 35 to translate.

[0044] Reference Fig.12 V-shaped grooves 38 are provided on both sides of the upper end of the above-mentioned mounting seat 3, and the V-shaped grooves 38 are integrally formed with the mounting seat 3, and pulleys 37 that slide in the V-shaped grooves 38 are rotatably installed on both sides of the crossbeam 8. Therefore, when the crossbeam 8 slides along the mounting seat 3, the crossbeam 8 can slide in the V-shaped grooves 38 through the pulleys 37, thereby ensuring the accuracy and stability of the movement of the engraving head 35.

[0045] Reference Figure 7 The above-mentioned mounting seat 3 is fixedly connected to two symmetrically arranged rotating seats 27, the rotating seats 27 and the mounting seat 3 are integrally formed, and a transmission shaft 28 is rotatably mounted on the two rotating seats 27. The output shaft of the motor 10 on the mounting seat 3 is fixedly connected to the transmission shaft 28, and the two sets of synchronous belts 11 on the mounting seat 3 are connected through the transmission shaft 28.

[0046] Specifically, when the crossbeam 8 needs to move linearly, the motor 10 will drive the transmission shaft 28 to rotate, and the transmission shaft 28 will drive the synchronous belts 11 on both sides to run synchronously. Since the rotating seat 27 and the mounting seat 3 are integrally formed, the symmetry of the synchronous belts 11 on both sides is effectively guaranteed, thereby ensuring the engraving accuracy of the engraving head 35.

[0047] Reference Figure 5-Figure 11 A vertically arranged heat dissipation frame 29 is fixedly provided on the rear wall of the mounting seat 3, and a radiator 20 is installed in the heat dissipation frame 29. The radiator 20 is mainly composed of a curved heat pipe and a fan. An exhaust port 23 aligned with the exhaust end of the radiator 20 is provided at the lower end of the base 1. A spiral heat dissipation pipe 18 is fixedly provided on the outer wall of the laser emitter 4, a water tank 19 for storing coolant is fixedly provided on the base 1, a water pump 22 for conveying and recovering coolant is fixedly provided on the water tank 19, and a water shortage protection switch 21 for protecting the water pump 22 is fixedly provided on the base 1. The water pump 22, the spiral heat dissipation pipe 18, the radiator 20 and the water shortage protection switch 21 are connected in series through a pipeline to form a closed loop between the water pump 22, the spiral heat dissipation pipe 18, the radiator 20 and the water shortage protection switch 21.

[0048] Specifically, when in use, the water pump 22 will pump the liquid in the water tank 19 into the spiral heat pipe 18. The coolant in the spiral heat pipe 18 will pass through the radiator 20 and the water shortage protection switch 21 in sequence, and finally flow back to the water tank 19. When cooling through the spiral heat pipe 18, part of the temperature generated by the laser emitter 4 can be taken away, thereby effectively dissipating the heat of the laser emitter 4 and indirectly improving the engraving accuracy of the engraving head 35. When the coolant passes through the curved heat pipe in the radiator 20, the fan on the radiator 20 will cool the coolant.

[0049] Reference Figure 3-Figure 4 as well as Figure 7-Figure 9 A protective cover 24 is fixedly mounted on the base 1. A control device 25 for controlling the operation of the entire engraving head 35 is also fixedly mounted on the base 1. A blower 26 is fixedly mounted on the base 1. The engraving head 35 is provided with an air blowing head. The output end of the blower 26 extends to the air inlet hole of the engraving head 35, that is, the air inlet hole of the air blowing head. The side walls of the protective cover 24 and the outer cover 2 are both provided with side holes 34.

[0050] Specifically, when in use, the blower fan 26 will suck air into the protective cover 24, and the protective cover 24 will suck air through the side hole 34, and then blow the air to the air inlet of the engraving head 35, so that the engraving head 35 can blow the smoke and dust generated by engraving to the surroundings through the airflow, which is convenient for subsequent engraving work and can dissipate heat for the engraving head 35. At the same time, it also prevents fire due to excessive temperature during the cutting process.

[0051] Reference Figure 1A top cover 30 is rotatably mounted on the top of the outer cover 2, and a transparent window 31 is provided on the top cover 30, through which the engraving process can be observed during use.

[0052] Reference Figure 1 The front end surface of the outer cover 2 is rotatably mounted with a box cover 32, and the outer wall of the box cover 32 is provided with a heat dissipation hole 33 connected with the mounting groove 5. When the negative pressure hole 14 inhales air into the mounting groove 5, the outer cover 2 has already absorbed outside air through the heat dissipation hole 33.

[0053] Reference Figure 3 and Figure 4 The base 1 is fixedly connected with a partition 36, and the partition 36 is located between the laser emitter 4 and the mounting seat 3. The partition 36 is used to isolate the laser emitter 4 to prevent the laser emitter 4 from being affected by the smoke during engraving.

[0054] Reference Figure 3 and Figure 4 A first lens 12 is fixedly mounted on the base 1 , a second lens 13 perpendicular to the first lens 12 is fixedly mounted on the beam 8 , the output end of the laser emitter 4 faces the first lens 12 , and the second lens 13 faces the input end of the engraving head 35 .

[0055] Specifically, when the laser transmitter 4 is in operation, the laser light is projected onto the first lens 12 , the first lens 12 refracts the laser light onto the second lens 13 , and the second lens 13 refracts the laser light to the engraving head 35 .

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser engraving machine, comprising a base (1), characterized in that: Also includes: An outer cover (2) is fixedly mounted on the upper end of the base (1), wherein an engraving head (35) is mounted inside the outer cover (2), and a laser emitter (4) cooperating with the engraving head (35) is fixedly mounted on the base (1); a mounting seat (3) fixedly connected to the base (1), wherein a mounting groove (5) is provided on the mounting seat (3), an engraving disk (7) is mounted on the upper end of the mounting groove (5), and the engraving disk (7) is provided with evenly distributed through holes, a negative pressure hole (14) is provided on the rear wall of the mounting seat (3), and an air intake end of the negative pressure hole (14) faces the mounting groove (5) and the upper and lower surfaces of the engraving disk (7), and a sewage discharge hole (6) connected to the mounting groove (5) is provided at the bottom of the base (1).

2. A laser engraving machine according to claim 1, characterized in that: An exhaust pipe (15) is provided on the rear wall of the outer cover (2), a negative pressure device (16) is installed between the exhaust pipe (15) and the negative pressure hole (14), and an air filter element (17) is installed at the input end of the negative pressure device (16).

3. A laser engraving machine according to claim 1, characterized in that: A crossbeam (8) is slidably mounted on the upper end of the mounting seat (3), a slide table (9) is slidably mounted on the crossbeam (8), and the engraving head (35) is fixedly mounted on the slide table (9), wherein synchronous belts (11) are mounted on both sides of the upper ends of the crossbeam (8) and the mounting seat (3), the crossbeam (8) and the slide table (9) are respectively fixedly connected to the belts of two groups of synchronous belts (11), and a motor (10) for driving the pulley on the synchronous belt (11) to rotate is fixedly mounted on the mounting seat (3) and the crossbeam (8).

4. A laser engraving machine according to claim 3, characterized in that: The mounting seat (3) is fixedly connected to two symmetrically arranged rotating seats (27), the rotating seats (27) and the mounting seat (3) are integrally formed, a transmission shaft (28) is rotatably mounted on the two rotating seats (27), an output shaft of the motor (10) on the mounting seat (3) is fixedly connected to the transmission shaft (28), and two sets of synchronous belts (11) on the mounting seat (3) are connected via the transmission shaft (28).

5. The laser engraving machine according to claim 1, characterized in that: A vertically arranged heat dissipation frame (29) is fixedly provided on the rear wall of the mounting seat (3), a radiator (20) is installed in the heat dissipation frame (29), an exhaust port (23) aligned with the exhaust end of the radiator (20) is provided at the lower end of the base (1), wherein a spiral heat dissipation pipe (18) is fixedly provided on the outer wall of the laser emitter (4), a water tank (19) is fixedly provided on the base (1), a water pump (22) is fixedly provided on the water tank (19), a water shortage protection switch (21) is fixedly provided on the base (1), and the water pump (22), the spiral heat dissipation pipe (18), the radiator (20) and the water shortage protection switch (21) are connected in series via a pipeline.

6. A laser engraving machine according to claim 5, characterized in that: A protective cover (24) is fixedly mounted on the base (1), a blower fan (26) is fixedly mounted on the base (1), an output end of the blower fan (26) extends into an air inlet of the engraving head 35, and side holes (34) are provided on the side walls of the protective cover (24) and the outer cover (2).

7. The laser engraving machine according to claim 1, characterized in that: A top cover (30) is rotatably mounted on the top of the outer cover (2), and a transparent window (31) is provided on the top cover (30).

8. The laser engraving machine according to claim 1, characterized in that: A box cover (32) is rotatably mounted on the front end surface of the outer cover (2), and a heat dissipation hole (33) communicating with the mounting groove (5) is provided on the outer wall of the box cover (32).

9. The laser engraving machine according to claim 1, characterized in that: The base (1) is fixedly connected to a partition (36), and the partition (36) is located between the laser emitter (4) and the mounting seat (3).

10. The laser engraving machine according to claim 3, characterized in that: A first lens (12) is fixedly mounted on the base (1), a second lens (13) perpendicular to the first lens (12) is fixedly mounted on the crossbeam (8), an output end of the laser emitter (4) faces the first lens (12), and the second lens (13) faces the input end of the engraving head (35).

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