A flat-field scanning mirror capable of rapid heat dissipation for laser marking machine

Abstract

The present invention relates to the technical field of laser marking machines, and specifically discloses a flat-field scanning mirror for laser marking machines that can quickly dissipate heat, including a galvanometer and a field lens, the field lens is installed at the bottom of the galvanometer, a lens is installed inside the field lens, a mounting mechanism is symmetrically provided on the outer wall of the galvanometer, a receiving plate is provided below the galvanometer, a heat dissipation mechanism is provided on the receiving plate, the heat dissipation mechanism includes a through groove opened on the receiving plate, a rotating plate is rotatably installed in the through groove, a plurality of heat dissipation fans are installed at the bottom of the rotating plate, and the air outlets of the plurality of heat dissipation fans are all inclined upward, and a clamping mechanism is provided at the bottom of the receiving plate. In the invention, the high temperature of the lens during operation is guided out through the heat dissipation mechanism and dissipated through the heat dissipation fins, and the heat dissipation fan can also blow air to the field lens and the heat dissipation fins continuously when the field lens is working, so as to accelerate the heat dissipation of the field lens, thereby preventing the lens of the field lens from being in a high temperature state during operation and extending the service life of the field lens.

Description

Technical Field

[0001] The invention relates to a flat field scanning mirror, in particular to a flat field scanning mirror capable of quickly dissipating heat for a laser marking machine, belonging to the technical field of laser marking machines. Background Art

[0002] Laser marking machines use laser beams to mark permanent marks on the surfaces of various materials. The effect of marking is to expose the deep material through the evaporation of the surface material, thereby engraving exquisite patterns, trademarks and texts. Laser marking machines are mainly divided into CO2 laser marking machines, semiconductor laser marking machines, fiber laser marking machines and YAG laser marking machines. Laser marking machines are mainly used in some occasions that require more precision and higher accuracy. Its main components are laser power supply, fiber laser, galvanometer scanning system and focusing system. The flat field scanning mirror is the field mirror, which is a necessary accessory for laser marking equipment. It is mainly used to focus the light from the galvanometer on a plane.

[0003] For the field lens of the laser marking machine in the prior art, when the laser marking machine is working, the generated laser will be focused by the field lens and then irradiated on the surface of the object for marking. In this process, the temperature of the field lens will rise rapidly after being irradiated by the laser. However, the prior art does not provide a mechanism for heat dissipation of the field lens on the laser marking machine, resulting in the field lens being in a high temperature state for a long time, which will affect its own stability, reliability and service life, thereby having a certain impact on people's use of the laser marking machine. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to provide a flat field scanning mirror capable of rapid heat dissipation for a laser marking machine.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A flat-field scanning mirror capable of rapid heat dissipation for a laser marking machine comprises a galvanometer and a field mirror, wherein the field mirror is mounted at the bottom of the galvanometer, a lens is mounted inside the field mirror, a mounting mechanism for fixing the field mirror is symmetrically arranged on the outer wall of the galvanometer, a receiving plate is provided on the receiving plate, a heat dissipation mechanism is provided on the receiving plate, the heat dissipation mechanism comprises a through slot provided on the receiving plate, a rotating plate is rotatably mounted in the through slot, a plurality of heat dissipation fans are equidistantly mounted on the bottom end of the rotating plate, and air outlets of the plurality of heat dissipation fans are all inclined upward, and a clamping mechanism for clamping a workpiece is also provided at the bottom of the receiving plate.

[0007] Preferably, the mounting mechanism comprises two mounting plates inserted into the outer wall of the galvanometer, and an outer wall of one end of the field mirror located inside the galvanometer is provided with a mounting groove matched with the two mounting plates.

[0008] Preferably, the outer wall of the galvanometer is connected to two fixing plates, and ends of the two mounting plates that are far away from each other respectively pass through the fixing plates that are close thereto, and ends of the two mounting plates that are far away from each other are connected to handheld terminals after passing through the fixing plates.

[0009] Preferably, guide rods are installed on the outer walls of the two handheld ends close to the galvanometer, and the outer walls of the two guide rods are fitted with return springs, one end of the two mounting plates located in the mounting groove is connected to a heat conducting part, and the ends of the two heat conducting parts close to each other are in contact with the outer wall of the lens, two fixing rods are also installed on the outer wall of the galvanometer, and sliders are slidably provided on the outer walls of the two fixing rods, the ends of the two mounting plates away from the galvanometer are symmetrically hinged with two connecting rods, and the ends of the two connecting rods away from the mounting plates are rotatably mounted on the two sliders.

[0010] Preferably, rectangular grooves are provided on the two mounting plates, and multiple cooling fins are installed in the two rectangular grooves. The air outlets of the cooling fans at both ends of the bottom of the rotating plate are facing the multiple cooling fins. A cooling fan with an air outlet tilted downward is also installed at the bottom of the receiving plate.

[0011] Preferably, two columns are respectively provided at both ends of the top of the supporting plate, and the top ends of the two columns are movably mounted on the ends of the two fixed rods away from each other, one end of one of the fixed rods away from the galvanometer is threadedly installed with a fastening nut, and a movable groove is opened on the top of the supporting plate, and the bottom end of one of the columns can move back and forth in the movable groove.

[0012] Preferably, a telescopic plate is slidably installed on the top of the rotating plate, and the telescopic plate can cover the top of the through slot when in an extended state, and a limiting plate for limiting the downward rotation angle of the rotating plate is installed at the bottom end of the through slot.

[0013] Preferably, two tilting rods are installed at the bottom of the receiving plate and the rotating plate, and the tilting rod at the bottom of the receiving plate is connected to an elastic plate, and the tilting rod at the bottom of the rotating plate is provided with a slot, and one end of the elastic plate away from the receiving plate is movably connected to the slot.

[0014] Preferably, the clamping mechanism comprises sliding grooves opened at both ends of the bottom of the receiving plate, two brackets are symmetrically installed in the two sliding grooves, and clamping plates are rotatably installed on the outer walls of the sides close to the bottom ends of the two brackets.

[0015] Preferably, a sliding rod and a double-headed screw are respectively installed in the two slide grooves, and one end of the two brackets in the two slide grooves are slidably matched with the sliding rod and the double-headed screw respectively. A first motor connected to one end of the double-headed screw is installed on the outer wall of one end of the supporting plate, and a second motor connected to one of the clamping plate rotating shafts is installed on one of the brackets.

[0016] The beneficial effects of the present invention are:

[0017] 1. In the invention, through the heat dissipation mechanism, the high temperature of the lens during operation can be conducted out through the mounting plate abutting against the lens and dissipated through the heat dissipation fins. The multiple heat dissipation fans arranged on the rotating plate can also continuously blow air to the field lens and the heat dissipation fins when the field lens is working, thereby accelerating the heat dissipation of the field lens, thereby preventing the lens of the field lens from being in a high temperature state during operation, ensuring the stability and reliability of the field lens during use, and extending the service life of the field lens; and the heat dissipation fan installed at the bottom of the receiving plate can blow air toward the workpiece being marked below, which is convenient for dissipating the heat of the workpiece and cleaning up the small amount of dust and debris generated during the marking process of the workpiece, making it convenient for people to use the laser marking machine.

[0018] 2. In the present invention, by means of the provided mounting mechanism, the field mirror can be quickly mounted on the bottom of the galvanometer by two mounting plates cooperating with each other, without the need to use the threaded mounting method in the prior art. This avoids the situation in the prior art where the field mirror is mounted on the bottom of the galvanometer via threads, and where the threads are loosened and stripped due to repeated disassembly of the field mirror, thereby greatly reducing the stability of the field mirror after installation.

[0019] 3. In the present invention, a rotating plate is rotatably installed in a receiving plate, and a telescopic plate is provided on the top of the rotating plate. After the laser marking machine completes the marking work, the elastic plate can be removed from the inclined rod at the bottom of the rotating plate, so that the rotating plate loses support and automatically rotates downward to a horizontal state. The telescopic plate can be stretched to an elongated state and covered on the top of the through groove, thereby preventing the worker from forgetting to turn off the laser marking machine after the work is completed, causing laser to be emitted from under the field mirror, causing harm to the worker when the worker picks up the workpiece.

[0020] 4. In the invention, by means of a clamping mechanism provided at the bottom of the receiving plate, workpieces of different shapes can be clamped and fixed, ensuring that the positions of workpieces of different shapes under the field mirror remain unchanged, making it convenient for the laser marking machine to mark them; and one of the clamping plates can be controlled to rotate by the first motor, thereby driving the position of the clamped workpiece to change, making it convenient to mark the other side and side wall of the workpiece, thereby improving the overall practicality of the laser marking machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a flat-field scanning mirror capable of rapid heat dissipation for a laser marking machine proposed by the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0024] Figure 3 It is a schematic diagram of the structure in which the telescopic plate is extended and covers the top of the through slot in the present invention;

[0025] Figure 4 It is a structural cross-sectional view of the galvanometer in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the installation mechanism in the present invention.

[0027] In the figure: 1. galvanometer; 2. field mirror; 3. receiving plate; 4. column; 5. mounting plate; 6. rotating plate; 7. heat dissipation fan; 8. limit plate; 9. elastic plate; 10. through slot; 11. telescopic plate; 12. fixing rod; 13. fixing plate; 14. tilting rod; 15. slot; 16. lens; 17. guide rod; 18. reset spring; 19. connecting rod; 20. mounting slot; 21. heat conduction part; 22. heat dissipation fin; 23. handheld end; 24. movable slot; 25. bracket; 26. second motor; 27. clamping plate; 28. slide slot; 29. ​​double-headed screw; 30. first motor. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Reference Figure 1-5 A flat-field scanning mirror with rapid heat dissipation for a laser marking machine comprises a galvanometer 1 and a field lens 2. The field lens 2 is mounted at the bottom of the galvanometer 1. A lens 16 is mounted inside the field lens 2. The outer wall of the galvanometer 1 is symmetrically provided with mounting mechanisms for fixing the field lens 2. The galvanometer 1 is provided with a receiving plate 3. The receiving plate 3 is provided with a heat dissipation mechanism. The heat dissipation mechanism comprises a through groove 10 opened on the receiving plate 3. A rotating plate 6 is rotatably mounted in the through groove 10. A plurality of heat dissipation fans 7 are equidistantly mounted at the bottom end of the rotating plate 6. The air outlets of the plurality of heat dissipation fans 7 are all inclined upward. A clamping mechanism for clamping a workpiece is also provided at the bottom of the receiving plate 3.

[0030] As a technical optimization solution of the present invention, the mounting mechanism includes two mounting plates 5 inserted into the outer wall of the galvanometer 1 , and a mounting groove 20 adapted to the two mounting plates 5 is provided on the outer wall of one end of the field lens 2 located inside the galvanometer 1 .

[0031] As a technical optimization solution of the present invention, two fixed plates 13 are connected to the outer wall of the galvanometer 1, and the ends of the two mounting plates 5 that are away from each other respectively pass through the fixed plates 13 that are close to them, and the ends of the two mounting plates 5 that are away from each other are connected to the handheld end 23 after passing through the fixed plates 13.

[0032] As a technical optimization scheme of the present invention, guide rods 17 are installed on the outer walls of the two handheld ends 23 close to the galvanometer 1, and the outer walls of the two guide rods 17 are fitted with reset springs 18, one end of the two mounting plates 5 located in the mounting groove 20 is connected to a heat conducting part 21, and the ends of the two heat conducting parts 21 close to each other are abutted against the outer wall of the lens 16, two fixing rods 12 are also installed on the outer wall of the galvanometer 1, and the outer walls of the two fixing rods 12 are slidably provided with sliders, the ends of the two mounting plates 5 away from the galvanometer 1 are symmetrically hinged with two connecting rods 19, and the ends of the two connecting rods 19 away from the mounting plate 5 are rotatably mounted on the two sliders. When the field mirror 2 is installed at the bottom of the galvanometer 1, the staff needs to pull one of the handheld ends 23 to make one of the mounting plates 5 slowly move out of the galvanometer 1, and through the connecting rods 19 set at both ends of the two mounting plates 5, and the other ends of the connecting rods 19 of the two mounting plates 5 are rotatably mounted on the outer wall of the slider, so that when one mounting plate 5 is pulled to move, the slider can be driven to slide on the outer wall of the fixed rod 12 through the connecting rod 19, and then the other mounting plate 5 can be driven to move out of the galvanometer 1 synchronously, so that the two mounting plates 5 can move in a direction away from each other, and the two mounting plates 5 and the guide rods 17 installed on the handheld end 23 slide on the fixed plate 13, driving the return spring 18 to be in a compressed state; after the two mounting plates 5 are moved from the inside of the galvanometer 1 to the outside of the galvanometer 1 at one end thereof, there is no obstruction of the mounting plate 5 inside the galvanometer 1 at this time, and on the premise of ensuring that the mounting groove 20 on the outer wall of the field mirror 2 is aligned with the position of the mounting plate 5, the top end of the field mirror 2 is placed at the bottom end of the galvanometer 1, and the staff The restriction on the handheld end 23 can be loosened, and the elastic reset of the reset spring 18 drives the two mounting plates 5 to reset, so that the ends of the two mounting plates 5 that are close to each other are inserted into the mounting groove 20 on the outer wall of the field mirror 2, so that the position of the field mirror 2 at the bottom end of the galvanometer 1 can be limited and fixed, thereby realizing the rapid installation of the field mirror 2 by the two mounting plates 5, and achieving the same effect as the prior art of using threads to install the field mirror 2 at the bottom of the galvanometer 1, and the long-term plug-in cooperation between the mounting plates 5 and the mounting grooves 20 causes less wear on each other, which can ensure that the field mirror 2 can have good stability in the case of repeated disassembly and assembly, and is convenient for the use of the staff; and when disassembling the field mirror 2, the staff can also pull one of the handheld ends 23 with one hand to drive the two mounting plates 5 to move synchronously in the direction away from each other, and place the other hand at the bottom of the field mirror 2 until the ends of the two mounting plates 5 that are close to each other move to the outside of the galvanometer 1, at which time the field mirror 2 automatically falls downward to the staff's hand without any restriction, thereby achieving the effect of rapid disassembly.

[0033] As a technical optimization scheme of the present invention, rectangular grooves are provided on the two mounting plates 5, and a plurality of heat dissipation fins 22 are installed in the two rectangular grooves. The air outlets of the heat dissipation fans 7 at both ends of the bottom of the rotating plate 6 are facing the plurality of heat dissipation fins 22, and a heat dissipation fan 7 with an air outlet tilted downward is also installed at the bottom of the receiving plate 3. When the laser marking machine is in use, the generated laser will be focused through the lens 16 of the field lens 2, which will inevitably cause the lens 16 to be irradiated by the high-temperature laser, causing its own temperature to increase accordingly. While the two mounting plates 5 of the mounting mechanism limit and fix the field lens 2, the heat conducting parts 21 arranged at one end of the two mounting plates 5 close to each other can abut against the outer wall of the lens 16 after being inserted into the mounting groove 20, so that the high temperature generated by the lens 16 during operation can be conducted to the plurality of heat dissipation fins 22 in the rectangular groove through the heat conducting parts 21, and the heat is dissipated through the heat dissipation fins 22; and it can be combined with the rotating The multiple heat dissipation fans 7 installed at the bottom of the plate 6 are used in coordination. The wind generated by the two heat dissipation fans 7 at both ends of the rotating plate 6 can blow toward the heat dissipation fins 22, which facilitates the heat dissipation of the heat dissipation fins 22 to quickly dissipate heat, ensuring that the temperature of the lens 16 during use will not be too high, thereby extending the service life of the lens 16; and the wind generated by the heat dissipation fan 7 located in the middle can directly blow toward the bottom of the field lens 2, to prevent the smoke generated when the laser marking machine marks the object from moving upward to the outer wall of the lens 16, causing contamination to the lens 16, causing dirt to adhere to the outer wall of the lens 16, and affecting the focusing of the lens 16. In addition, the wind blown by the heat dissipation fan 7 installed at the bottom of the receiving plate 3 can be directed toward the workpiece being marked below, dissipating the workpiece while also cleaning up a small amount of dust and debris generated during the workpiece marking process, so as to facilitate the staff to quickly take the marked workpiece.

[0034] As a technical optimization solution of the present invention, two columns 4 are respectively provided at both ends of the top of the receiving plate 3, and the top ends of the two columns 4 are movably mounted on the ends away from the two fixing rods 12, one of the fixing rods 12 is threadedly installed with a fastening nut at one end away from the galvanometer 1, and a movable groove 24 is provided at the top of the receiving plate 3, and the bottom end of one of the columns 4 can move back and forth in the movable groove 24. The receiving plate 3 is movably matched with the two fixing rods 12 through the two columns 4 arranged on the top, so that the receiving plate 3 is detachable, and after the receiving plate 3 is installed under the galvanometer 1, the top end of one of the columns 4 that can move in the movable groove 24 at the top of the receiving plate 3 is limited and fixed by using a fastening nut, so that the receiving plate 3 can be installed on the fixing rod 12, which is convenient for quick disassembly and assembly of the receiving plate 3 according to the use needs.

[0035] As a technical optimization solution of the present invention, a telescopic plate 11 is slidably installed on the top of the rotating plate 6. When the telescopic plate 11 is in an extended state, it can cover the top of the through groove 10. A limit plate 8 is installed at the bottom end of the through groove 10 for limiting the downward rotation angle of the rotating plate 6.

[0036] As a technical optimization solution of the present invention, two tilting rods 14 are installed at the bottom of the receiving plate 3 and the rotating plate 6, and the tilting rod 14 at the bottom of the receiving plate 3 is connected to the elastic plate 9, and the tilting rod 14 at the bottom of the rotating plate 6 is provided with a slot 15, and the end of the elastic plate 9 away from the receiving plate 3 is movably connected to the slot 15. The bottom ends of the receiving plate 3 and the rotating plate 6 are both provided with a tilting rod 14, one end of the elastic plate 9 is connected to the tilting rod 14 at the bottom of the receiving plate 3, and the tilting rod 14 at the bottom of the rotating plate 6 is movably plugged with the elastic plate 9, so that the elastic plate 9 is in a detachable state. After the elastic plate 9 is inserted into the slot 15 of the tilting rod 14 at the bottom of the rotating plate 6, the position of the rotating plate 6 can be limited and supported, so that the air outlets of the multiple heat dissipation fans 7 at the bottom of the rotating plate 6 are conveniently directed toward the heat dissipation fins 22, so as to facilitate the heat dissipation of the lens 16; after the laser marking machine is used, the elastic plate 9 is removed from the tilting rod 14 at the bottom of the rotating plate 6, so that the rotating plate 6 loses support and automatically rotates downward to a horizontal state, and then the telescopic plate 11 at the top of the rotating plate 6 is stretched to an elongated state and covered on the top of the through groove 10, so as to avoid the situation that the staff forgets to turn off the laser marking machine after the work is completed, so that the laser is still emitted from the bottom of the field lens 2, causing harm to the staff when the staff takes the workpiece. When marking a relatively small workpiece, the telescopic plate 11 can also be stretched to an extended state and covered on the top of the through slot 10. At this time, the telescopic plate 11 can be used as a small workbench. The small workpiece is placed on the top of the telescopic plate 11 in the extended state, and the laser marking machine is used to mark it, which is more convenient. When the telescopic plate 11 is not needed, the rotating plate 6 can be flipped up again. At this time, the telescopic plate 11 can automatically retract and return to its original position after the rotating plate 6 is flipped up, and then one end of the elastic plate 9 is re-inserted into the slot 15 of the tilt rod 14 at the bottom of the rotating plate 6, and the position of the rotating plate 6 can be re-limited and fixed.

[0037] As a technical optimization solution of the present invention, the clamping mechanism includes slide grooves 28 opened at both ends of the bottom of the receiving plate 3, two brackets 25 are symmetrically installed in the two slide grooves 28, and the outer walls of the sides close to the bottom ends of the two brackets 25 are rotatably installed with clamps 27.

[0038] As a technical optimization scheme of the present invention, a sliding rod and a double-headed screw rod 29 are respectively installed in the two slide grooves 28, and one end of the two brackets 25 in the two slide grooves 28 are respectively slidably matched with the sliding rod and the double-headed screw rod 29, and a first motor 30 connected to one end of the double-headed screw rod 29 is installed on the outer wall of one end of the receiving plate 3, and a second motor 26 connected to the rotating shaft of one of the clamping plates 27 is installed on one of the brackets 25. When the laser marking machine is marking a workpiece of a larger volume and different shapes, the workpiece can be placed between the two clamping plates 27, and the first motor 30 is started to drive the double-headed screw 29 to rotate, so that the two brackets 25 can move towards or away from each other in the slide groove 28 under the rotation of the double-headed screw 29, so that the clamping plates 27 at the bottom ends of the two brackets 25 can clamp and limit the workpiece after adapting to the size of the workpiece at this time, so that the laser marking machine can accurately mark the workpiece; and when it is necessary to mark the other side or side wall of the workpiece, the second motor 26 can be started to drive the two clamping plates 27 and the clamped workpiece to rotate and adjust the position, so that the laser marking machine can flexibly adjust the workpiece according to the different marking positions of the workpiece, further improving the practicality of the laser marking machine.

[0039] In the present invention, when installing the field mirror 2 at the bottom of the galvanometer 1, the staff needs to pull one of the handheld ends 23 to drive one of the mounting plates 5 to move, and drive the other mounting plate 5 to move synchronously through the cooperation of the connecting rod 19 and the slider, so that the two mounting plates 5 can move in the direction away from each other. After the two mounting plates 5 are moved from the inside of the galvanometer 1 to the outside of the galvanometer 1 at one end close to the other, on the premise of ensuring that the mounting groove 20 on the outer wall of the field mirror 2 is aligned with the position of the mounting plate 5, the top of the field mirror 2 is placed at the bottom of the galvanometer 1. The staff can then release the restriction on the handheld end 23, and the elastic reset of the reset spring 18 drives the two mounting plates 5 to reset, so that the two mounting plates 5 are inserted into the mounting groove 20 on the outer wall of the field mirror 2 at the one end close to the other, and the position of the field mirror 2 at the bottom of the galvanometer 1 can be limited and fixed, thereby realizing the rapid installation of the field mirror 2 by the two mounting plates 5.

[0040] After the field lens 2 is installed at the bottom end of the galvanometer 1, the laser marking machine can work normally. The generated laser is focused by the field lens 2 and irradiated on the surface of the object on the top of the workbench to mark the object. When the laser marking machine is used, the temperature of the lens 16 will also increase. The heat conducting part 21 arranged at one end of the two mounting plates 5 close to each other can be inserted into the mounting groove 20 and abut against the outer wall of the lens 16, so that the high temperature generated by the lens 16 during operation can be conducted to the heat dissipation fins 22 through the heat conducting part 21; and it can be used in conjunction with the multiple heat dissipation fans 7 installed at the bottom of the rotating plate 6, so that the heat dissipation fins 22 can quickly dissipate heat, ensure that the temperature of the lens 16 during use will not be too high, and thus the service life of the lens 16 can be extended; and the wind blown by the heat dissipation fan 7 installed at the bottom of the receiving plate 3 can be directed to the workpiece being marked below, and the workpiece can be cooled while the workpiece is cooled. It can also clean up a small amount of dust and debris generated during the marking process of the workpiece, so that it is convenient for the staff to quickly take the marked workpiece.

[0041] Furthermore, when the laser marking machine is marking a workpiece that is larger in size and has different shapes, the workpiece can be placed between the two clamps 27 to clamp and limit the workpiece, so that the laser marking machine can accurately mark the workpiece; and when it is necessary to mark the other side or side wall of the workpiece, the second motor 26 can be started to drive the two clamps 27 and the clamped workpiece to rotate and adjust the position, so that the laser marking machine can flexibly adjust the workpiece according to the different marking positions of the workpiece, further improving the practicality of the laser marking machine; when it is necessary to quickly mark multiple workpieces, the fastening nut can be removed, and one of the columns 4 can be moved in the movable groove 24 until its top end is detached from the fixed rod 12, and the other column 4 can be slid and removed from the other fixed rod 12, and the entire receiving plate 3 can be disassembled, so that the laser marking machine can quickly mark multiple workpieces.

[0042] At the same time, after the laser marking machine is used, the elastic plate 9 is removed from the tilting rod 14 at the bottom of the rotating plate 6, so that the rotating plate 6 loses support and automatically rotates downward to a horizontal state, and then the telescopic plate 11 on the top of the rotating plate 6 is stretched into an extended state and covered on the top of the through groove 10, so as to avoid the situation that the staff forgets to turn off the laser marking machine after the work is completed, so that the laser is still emitted under the field mirror 2, causing harm to the staff when the staff takes the workpiece; and when the laser marking machine is working, the telescopic plate 11 can be stretched to an extended state and covered on the top of the through groove 10 for marking relatively small workpieces. At this time, the telescopic plate 11 can be used as a small workbench, and the smaller workpiece is placed on the top of the telescopic plate 11 in the extended state, and it is more convenient to mark it with the laser marking machine.

[0043] When the field lens 2 needs to be disassembled and replaced, the staff can also pull one of the handheld ends 23 with one hand to drive the two mounting plates 5 to move synchronously away from each other, and place the other hand on the bottom of the field lens 2 until the two mounting plates 5 are moved to the outside of the galvanometer 1 at one end. At this time, the field lens 2 automatically falls downward to the staff's hand without any restrictions, thereby achieving the effect of quick disassembly.

[0044] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A flat-field scanning mirror capable of rapid heat dissipation for a laser marking machine, comprising a galvanometer (1) and a field lens (2), wherein the field lens (2) is mounted at the bottom of the galvanometer (1), and a lens (16) is mounted inside the field lens (2), characterized in that: The outer wall of the galvanometer (1) is symmetrically provided with a mounting mechanism for fixing the field mirror (2); the galvanometer (1) is provided with a receiving plate (3); the receiving plate (3) is provided with a heat dissipation mechanism; the heat dissipation mechanism comprises a through slot (10) provided on the receiving plate (3); a rotating plate (6) is rotatably mounted in the through slot (10); a plurality of heat dissipation fans (7) are equidistantly mounted at the bottom end of the rotating plate (6); and the air outlets of the plurality of heat dissipation fans (7) are all inclined upwards; a clamping mechanism for clamping a workpiece is also provided at the bottom of the receiving plate (3); The mounting mechanism comprises two mounting plates (5) inserted into the outer wall of the galvanometer (1); an outer wall of one end of the field mirror (2) located in the galvanometer (1) is provided with a mounting groove (20) adapted to the two mounting plates (5); the outer wall of the galvanometer (1) is connected to two fixing plates (13); the ends of the two mounting plates (5) that are away from each other respectively pass through the fixing plates (13) that are close thereto; and the ends of the two mounting plates (5) that are away from each other are connected to a handheld end (23) after passing through the fixing plates (13); the outer walls of the two handheld ends (23) that are close to the galvanometer (1) are both provided with guide rods (17), and the outer walls of the two guide rods (17) are both provided with return springs (18); and the ends of the two mounting plates (5) that are located in the mounting grooves (20) are both connected to a heat conducting portion (21 ), and the ends of the two heat conducting parts (21) that are close to each other are both in contact with the outer wall of the lens (16), the outer wall of the galvanometer (1) is also equipped with two fixing rods (12), and the outer walls of the two fixing rods (12) are both slidably provided with sliders, the ends of the two mounting plates (5) that are away from the galvanometer (1) are both symmetrically hinged with two connecting rods (19), and the ends of the two connecting rods (19) that are away from the mounting plates (5) are respectively rotatably mounted on the two sliders, the two mounting plates (5) are both provided with rectangular grooves, and a plurality of heat dissipation fins (22) are both installed in the two rectangular grooves, the air outlets of the heat dissipation fans (7) at both ends of the bottom of the rotating plate (6) are both oriented toward the plurality of heat dissipation fins (22), and a heat dissipation fan (7) with an air outlet tilted downward is also installed at the bottom of the receiving plate (3); The clamping mechanism comprises a slide groove (28) provided at both ends of the bottom of the receiving plate (3), two brackets (25) are symmetrically installed in the two slide grooves (28), and a clamping plate (27) is rotatably installed on the outer wall of the side close to the bottom end of the two brackets (25), a sliding rod and a double-headed screw (29) are respectively installed in the two slide grooves (28), and one end of the two brackets (25) in the two slide grooves (28) is respectively slidably matched with the sliding rod and the double-headed screw (29), and a first motor (30) connected to one end of the double-headed screw (29) is installed on the outer wall of one end of the receiving plate (3), and a second motor (26) connected to the rotating shaft of one of the clamping plates (27) is installed on one of the brackets (25).

2. The flat-field scanning mirror capable of rapid heat dissipation for a laser marking machine according to claim 1, characterized in that: Two columns (4) are respectively provided at both ends of the top of the receiving plate (3), and the top ends of the two columns (4) are movably mounted on the ends of the two fixed rods (12) that are away from each other, and a fastening nut is threadedly mounted on the end of one of the fixed rods (12) that is away from the galvanometer (1), and a movable groove (24) is provided on the top of the receiving plate (3), and the bottom end of one of the columns (4) can move back and forth in the movable groove.

3. The flat-field scanning mirror capable of rapid heat dissipation for a laser marking machine according to claim 1, characterized in that: A telescopic plate (11) is slidably mounted on the top of the rotating plate (6); the telescopic plate (11) can cover the top of the through slot (10) when in an extended state; a limiting plate (8) is mounted at the bottom of the through slot (10) for limiting the downward rotation angle of the rotating plate (6).

4. The flat-field scanning mirror capable of rapid heat dissipation for a laser marking machine according to claim 1, characterized in that: Two tilting rods (14) are installed at the bottom of the receiving plate (3) and the rotating plate (6), and the tilting rod (14) at the bottom of the receiving plate (3) is connected to an elastic plate (9), and the tilting rod (14) at the bottom of the rotating plate (6) is provided with a slot (15), and one end of the elastic plate (9) away from the receiving plate (3) is movably plugged into the slot (15).

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