An ultra-high-speed digital laser galvanometer driving device

Abstract

The present invention discloses an ultra-high-speed digital laser galvanometer drive device, which belongs to the field of galvanometer technology. In the present invention, an ultra-high-speed digital laser galvanometer drive device includes a shell, a cooling guide tube is fixedly connected inside the shell, a drive frame is slidably provided on the cooling guide tube, a galvanometer body is movably plugged at one end of the drive frame, and a protective mechanism is rotatably connected to the inner wall of the bottom end of the shell. By providing a cooling guide tube, the spiral scraper rod and the fan blade can be driven to rotate by flowing water at the same time, which can avoid the adhesion of scale on the inner wall of the cooling guide tube, and can quickly absorb and take away a large amount of heat generated by the drive frame during high-speed movement, thereby effectively preventing the equipment from overheating, thereby extending the service life of the equipment, and reducing the failure and maintenance costs caused by overheating. At the same time, the stable working temperature also helps to improve the processing accuracy and stability of the laser galvanometer and ensure product quality.

Description

Technical Field

[0001] The invention belongs to the technical field of galvanometers, and in particular relates to an ultra-high-speed digital laser galvanometer driving device. Background Art

[0002] The ultra-high-speed digital laser galvanometer drive device is mainly composed of a reflective lens, a drive device (including electromagnetic drive or piezoelectric drive, etc.), a controller and related electronic components. Among them, the reflective lens is responsible for reflecting the laser beam, and the drive device precisely controls the change of current or voltage to make the reflective lens produce fast and accurate deflection.

[0003] Some Chinese patents in the field of galvanometer technology are disclosed in the prior art, among which the Chinese patent with application number CN202021509433.7 discloses a galvanometer drive device and a laser processing system, wherein a fixed part is clamped between the first guide and the second guide, and the fixed part is rolled with the first guide and the second guide through a rolling assembly, so that the cam rotates and drives the fixed part to roll on the first guide and the second guide to perform reciprocating linear movement, and the rolling movement mode has less resistance, which can reduce the load of the galvanometer motor and avoid the wear of the fixed part when it moves relative to the first guide and the second guide. In addition, the fixed part is clamped between the first guide and the second guide, so that the rolling assembly can be in close contact with the first guide and the second guide, and the motion stability of the fixed part is improved, thereby improving the rigidity of the entire motion system and effectively improving the response speed of the system. In short, the galvanometer drive device has the characteristics of simple structure, good operation stability, light load weight, good rigidity and fast response speed.

[0004] The prior art realizes the movement of the galvanometer through a rolling assembly, a first guide member and a second guide member. However, under ultra-high-speed movement, high temperature will be generated. The high temperature will cause changes in the material properties of the rolling assembly and the guide assembly, such as reduced hardness, changes in elastic modulus, etc., thereby affecting the accuracy and stability of its movement. At the same time, high temperature will cause thermal expansion of the assembly, resulting in changes in the rolling and guide gaps, thereby affecting the positioning accuracy and repeatability of the galvanometer.

[0005] Based on this, the present invention designs an ultra-high-speed digital laser galvanometer driving device to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that high temperature will be generated under ultra-high-speed movement, which will cause changes in the material properties of rolling components and guide components, such as reduced hardness, changes in elastic modulus, etc., thereby affecting the accuracy and stability of their movement. At the same time, high temperature will cause thermal expansion of the components, resulting in changes in rolling and guiding gaps, thereby affecting the positioning accuracy and repeatability of the galvanometer. An ultra-high-speed digital laser galvanometer drive device is proposed.

[0007] The technical solution of the present invention is as follows: an ultra-high-speed digital laser galvanometer drive device comprises a shell, a cooling guide tube is fixedly arranged in the shell, pipe joints are fixedly arranged at both ends of the cooling guide tube, two impeller seats are fixedly arranged at both ends of one side of the cooling guide tube in a centrally symmetrical structure, an impeller is rotatably arranged in the impeller seat, a connecting rod is fixedly arranged on the impeller, a spiral scraper rod is rotatably arranged at the other end of the connecting rod, the spiral scraper rod is arranged in sliding contact with the inner wall of the cooling guide tube, and a transmission is fixedly arranged at one end of the spiral scraper rod. A driving wheel, an annular rack is fixedly connected inside the impeller seat, the transmission wheel is meshed with the annular rack for transmission, a driving frame is slidingly matched on the cooling guide tube, a galvanometer body is movably inserted at one end of the driving frame, magnet mounting mechanisms are fixedly connected on both sides of the driving frame and on the inner sides of both ends of the outer shell, a moving magnet is clamped in the magnet mounting mechanism on the driving frame, a fixed magnet is clamped in the magnet mounting mechanism on the outer shell, an electromagnetic coil is fixedly installed at the position of the fixed magnet in the outer shell, and a protective mechanism is rotatably connected to the inner wall of the bottom end of the outer shell.

[0008] As a further description of the above technical solution: the other end of the impeller is connected and fixedly provided with a universal joint A, and the other end of the universal joint A passes through the inner wall of the cooling guide tube and extends to the outside and is connected and fixedly provided with a fan blade.

[0009] As a further description of the above technical solution: two guide rings are fixedly connected at both ends of the drive frame, the inner wall of the guide ring is in an annular structure and rotatably connected with multiple rollers, the rollers are arranged in sliding contact with the outer wall of the cooling guide tube, and a plug hole is opened at the bottom end of the middle part of the drive frame.

[0010] As a further description of the above technical solution: an insertion rod is fixedly connected to the galvanometer body, and limit blocks are slidably provided on the inner walls on both sides of the insertion rod, a spring is fixedly connected to the inner end of the limit block, and the other end of the spring is fixedly connected to the inner wall of the insertion rod, and the limit block is movably engaged with the plug-in hole.

[0011] As a further description of the above technical solution: the magnet mounting mechanism includes a mounting seat, on which a plurality of limit rods are rotatably connected, one end of the limit rod abuts against the outer wall of the moving magnet, and one end of the limit rod is fixedly connected to a gear.

[0012] As a further description of the above technical solution: a movable disk is slidingly provided on the inner wall of the mounting seat, a plurality of tension springs are connected and fixedly provided on one side of the movable disk, the other end of the tension springs is connected and fixedly provided on the inner wall of the mounting seat, a plurality of racks are connected and fixedly provided on the other side of the movable disk, the other end of the rack passes through the inner wall of the mounting seat and extends to the outside, and the outer end of the rack is meshed with a gear for transmission.

[0013] As a further description of the above technical solution: an adjusting rod is threadedly connected through the inner wall of the mounting seat, one end of the adjusting rod located in the mounting seat is connected and fixedly provided with a push rod, and one side of the movable disk connected to the tension spring is connected and fixedly provided with a triangular block, and the push rod is arranged in sliding contact with the triangular block.

[0014] As a further description of the above technical scheme: the protective mechanism includes a two-way screw rod, which is rotatably connected to the inner wall of the bottom end of the shell, and the outer end of the two-way screw rod is connected and fixed with a knob, and the outer walls of both ends of the two-way screw rod are threadedly connected to a moving block, the moving block is connected and fixedly provided with a moving frame, and a protective cover is rotatably connected to the moving frame, one end of the protective cover is connected and fixedly provided with a worm gear, one side of the worm gear is meshingly provided with a worm gear, the worm gear is rotatably connected to the moving frame, one end of the worm gear is connected and fixedly provided with an adjusting wheel, the adjusting wheel is meshingly transmitted with a fixed rack A connected to the bottom inner wall of the shell, a universal joint B is rotatably connected on the protective cover, one end of the universal joint B is connected and fixedly provided with a sponge, and the other end of the universal joint B is connected and fixedly provided with a driving wheel, and the driving wheel is meshingly transmitted with a fixed rack B connected to the inner wall of the bottom end of the shell.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. In the present invention, a cooling guide tube is provided and flowing water is injected into the cooling guide tube. The flowing water can drive the spiral scraper rod and the fan blades to rotate, thereby avoiding the adhesion of scale on the inner wall of the cooling guide tube, ensuring its thermal conductivity, and accelerating the air flow in the equipment. At this time, when the driving frame moves at high speed on the cooling guide tube, it can quickly absorb and take away a large amount of heat generated by the driving frame during the high-speed movement, thereby effectively preventing the equipment from overheating, thereby extending the service life of the equipment and reducing failures and maintenance costs caused by overheating. At the same time, a stable working temperature also helps to improve the processing accuracy and stability of the laser galvanometer and ensure product quality.

[0017] 2. In the present invention, by setting a moving magnet, a fixed magnet and an electromagnetic coil, when current passes through the coil, the generated magnetic field will be superimposed or offset with the magnetic field of the fixed magnet, resulting in a change in the repulsive force on the moving magnet. By accurately controlling the magnitude and direction of the current in the coil, the position of the moving magnet can be accurately controlled, thereby driving the galvanometer to deflect quickly and accurately. Compared with the traditional galvanometer motor drive method, it has the advantages of fast response speed, high precision, low noise, low energy consumption and low maintenance cost.

[0018] 3. In the present invention, by providing a protective mechanism, the galvanometer can be sealed and protected when not in use to avoid moisture, dust or other forms of physical damage. At the same time, with the help of a sponge, dust and dirt on the galvanometer and optical elements can be cleaned in time to keep their surfaces clean, thereby ensuring stable, efficient and precise operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an ultra-high-speed digital laser galvanometer driving device proposed by the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of an ultra-high-speed digital laser galvanometer driving device proposed by the present invention;

[0021] Figure 3 A partial cross-sectional schematic diagram of a cooling guide tube structure of an ultra-high-speed digital laser galvanometer drive device proposed by the present invention;

[0022] Figure 4 An ultra-high-speed digital laser galvanometer driving device proposed by the present invention Figure 3 A schematic diagram of the structure enlargement at point A;

[0023] Figure 5 A schematic diagram of the structure of a drive frame and other components of an ultra-high-speed digital laser galvanometer drive device proposed by the present invention;

[0024] Figure 6 A schematic diagram of the main structure of a galvanometer of an ultra-high-speed digital laser galvanometer driving device proposed by the present invention;

[0025] Figure 7 A schematic cross-sectional expansion diagram of a magnet installation mechanism and other structures of an ultra-high-speed digital laser galvanometer drive device proposed by the present invention;

[0026] Figure 8 A schematic diagram of the structure of a protection mechanism of an ultra-high-speed digital laser galvanometer drive device proposed by the present invention;

[0027] Fig. 9 A schematic cross-sectional view of the structure on a protective cover of an ultra-high-speed digital laser galvanometer drive device proposed by the present invention;

[0028] Fig.10 A schematic cross-sectional view of the housing structure of an ultra-high-speed digital laser galvanometer drive device proposed by the present invention;

[0029] Fig.11 This is a schematic diagram of a magnet installation mechanism of an ultra-high-speed digital laser galvanometer drive device proposed in the present invention.

[0030] Legend:

[0031] 1. Shell; 2. Cooling guide tube; 3. Drive frame; 4. Vibrating mirror body; 5. Magnet installation mechanism; 6. Moving magnet; 7. Fixed magnet; 8. Electromagnetic coil; 9. Protective mechanism; 201. Pipe joint; 202. Impeller seat; 203. Impeller; 204. Connecting rod; 205. Spiral scraper rod; 206. Transmission wheel; 207. Ring rack; 208. Universal joint A; 209. Fan blade; 301. Guide ring; 302. Roller; 303. Plug hole; 401. Plug rod; 402. Limit block; 403. Spring; 501, mounting seat; 502, limit rod; 503, gear; 504, moving plate; 505, tension spring; 506, rack; 507, adjusting rod; 508, push rod; 509, triangular block; 901, two-way screw; 902, knob; 903, moving block; 904, moving frame; 905, protective cover; 906, worm gear; 907, worm; 908, adjusting wheel; 909, universal joint B; 910, sponge; 911, driving wheel; 101, fixed rack A; 102, fixed rack B. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0033] Please see attached Figure 1 -Attached Fig.11The present invention provides a technical solution: an ultra-high-speed digital laser galvanometer driving device, comprising a shell 1, a cooling guide tube 2 is connected and fixedly arranged in the shell 1, and pipe joints 201 are connected and fixedly arranged at both ends of the cooling guide tube 2, and two impeller seats 202 are connected and fixedly arranged at both ends of one side of the cooling guide tube 2 in a centrally symmetrical structure, an impeller 203 is rotatably connected in the impeller seat 202, a connecting rod 204 is connected and fixedly arranged on the impeller 203, and a spiral wall scraping rod 205 is rotatably connected to the other end of the connecting rod 204, and the spiral wall scraping rod 205 is arranged to slide in contact with the inner wall of the cooling guide tube 2, and one end of the spiral wall scraping rod 205 is connected and fixedly arranged A transmission wheel 206 is arranged, and an annular rack 207 is connected and fixedly arranged inside the impeller seat 202. The transmission wheel 206 and the annular rack 207 are meshed and transmitted. A driving frame 3 is slidingly arranged on the cooling guide tube 2, and a galvanometer body 4 is movably inserted at one end of the driving frame 3. Magnet mounting mechanisms 5 are connected and fixedly arranged on both sides of the driving frame 3 and the inner sides of both ends of the outer shell 1. A movable magnet 6 is clamped in the magnet mounting mechanism 5 on the driving frame 3, and a fixed magnet 7 is clamped in the magnet mounting mechanism 5 on the outer shell 1. An electromagnetic coil 8 is fixedly installed at the position of the fixed magnet 7 in the outer shell 1, and a protective mechanism 9 is rotatably connected to the inner wall of the bottom end of the outer shell 1.

[0034] The other end of the impeller 203 is connected and fixed with a universal joint A208, and the other end of the universal joint A208 passes through the inner wall of the cooling guide tube 2 and extends to the outside and is connected and fixed with a fan blade 209. The flowing water drives the impeller 203 to rotate, and at this time, the impeller 203 drives the fan blade 209 connected to the universal joint A208 to rotate, accelerating the air flow and realizing the heat dissipation of the electromagnetic coil 8.

[0035] Specifically, Figure 5 As shown, two guide rings 301 are fixedly connected at both ends of the drive frame 3. The inner wall of the guide ring 301 is in a ring structure and is rotatably connected with multiple rollers 302. The rollers 302 are in sliding contact with the outer wall of the cooling guide tube 2. A plug hole 303 is opened at the bottom end of the middle part of the drive frame 3.

[0036] Specifically, Figure 6 As shown, a plug rod 401 is connected and fixedly provided on the galvanometer body 4, and both inner walls of the plug rod 401 are slidably provided with limit blocks 402, and a spring 403 is connected and fixedly provided on the inner end of the limit block 402, and the other end of the spring 403 is connected and fixedly provided with the inner wall of the plug rod 401, and the limit block 402 is movably engaged with the plug hole 303. When the plug rod 401 on the galvanometer body 4 is inserted into the plug hole 303, the spring 403 will make the limit block 402 movably engage with the plug hole 303, and the installation of the galvanometer body 4 is completed.

[0037] Specifically, Figure 7As shown, the magnet installation mechanism 5 includes a mounting seat 501, on which a plurality of limit rods 502 are rotatably connected, one end of the limit rod 502 abuts against the outer wall of the moving magnet 6, and one end of the limit rod 502 is fixedly connected to a gear 503. The rack 506 drives the limit rod 502 connected to the gear 503 to rotate, so as to clamp and install the fixed magnet 7.

[0038] A movable disk 504 is slidably arranged on the inner wall of the mounting seat 501, and a plurality of tension springs 505 are fixedly connected to one side of the movable disk 504, and the other end of the tension spring 505 is fixedly connected to the inner wall of the mounting seat 501, and a plurality of racks 506 are fixedly connected to the other side of the movable disk 504, and the other end of the rack 506 extends to the outside through the inner wall of the mounting seat 501, and the outer end of the rack 506 is meshed with the gear 503 for transmission.

[0039] The inner wall of the mounting seat 501 is provided with an adjusting rod 507 through a threaded connection, and one end of the adjusting rod 507 located in the mounting seat 501 is connected and fixedly provided with a push rod 508, and one side of the movable plate 504 connected to the tension spring 505 is connected and fixedly provided with a triangular block 509, and the push rod 508 is provided in sliding contact with the triangular block 509. The adjusting rod 507 is rotated to make the adjusting rod 507 drive the connected push rod 508 to move, and at this time, the push rod 508 will contact and squeeze the triangular block 509, so that the triangular block 509 drives the connected movable plate 504 to move.

[0040] Specifically, Figure 8 , Fig. 9 , Fig.10As shown, the protection mechanism 9 includes a bidirectional screw rod 901, which is rotatably connected to the inner wall of the bottom end of the housing 1, and a knob 902 is fixedly provided at the outer end of the bidirectional screw rod 901. The outer walls of both ends of the bidirectional screw rod 901 are threadedly connected to move blocks 903, and a moving frame 904 is fixedly provided on the moving block 903. A protection cover 905 is rotatably provided on the moving frame 904, and a worm gear 906 is fixedly provided at one end of the protection cover 905, and a worm gear 907 is provided on one side of the worm gear 906 for meshing transmission. The worm 907 is rotatably connected to the movable frame 904, one end of the worm 907 is connected and fixedly provided with an adjusting wheel 908, the adjusting wheel 908 is meshingly connected with a fixed rack A101 connected to the inner wall of the bottom end of the outer shell 1 for transmission, a universal joint B909 is rotatably connected to the protective cover 905, one end of the universal joint B909 is connected and fixedly provided with a sponge 910, the other end of the universal joint B909 is connected and fixedly provided with a driving wheel 911, the driving wheel 911 is meshingly connected with a fixed rack B102 connected to the inner wall of the bottom end of the outer shell 1 for transmission. By rotating the bidirectional screw rod 901, the bidirectional screw rod 901 drives the two moving blocks 903 to move. At this time, the moving frame 904 on the moving block 903 drives the protective cover 905 to move. At this time, under the action of the fixed rack A101, the adjusting wheel 908 drives the connected worm 907 to rotate, so that the worm 907 drives the protective cover 905 connected to the worm wheel 906 to stand up. Then, when the sponge 910 on the protective cover 905 contacts the galvanometer body 4, under the action of the fixed rack B102, the driving wheel 911 rotates, thereby driving the sponge 910 connected to the universal joint B909 to rotate, and the surface of the galvanometer body 4 is cleaned. Then, the protective cover 905 covers both sides of the galvanometer body 4 to protect it.

[0041] Working principle: when in use: the required components need to be installed in the housing 1, first, the fixed magnet 7 and the moving magnet 6 are respectively installed in the housing 1 and on the magnet mounting mechanism 5 on the driving frame 3, after the fixed magnet 7 is placed in the mounting seat 501, the adjusting rod 507 is manually rotated so that the adjusting rod 507 drives the connected push rod 508 to move, at this time the push rod 508 will contact and squeeze the triangular block 509, so that the triangular block 509 drives the connected moving disk 504 to move, at this time the rack 506 on the moving disk 504 will drive the limit rod 502 connected to the gear 503 to rotate, and the fixed magnet 7 is clamped and installed;

[0042] Then, the insertion rod 401 on the galvanometer body 4 is inserted into the insertion hole 303. At this time, the spring 403 will make the limit block 402 and the insertion hole 303 movably engage, completing the installation of the galvanometer body 4. Then, the current is controlled as needed. When the current passes through the electromagnetic coil 8, the magnetic field generated will be superimposed or offset with the magnetic field of the fixed magnet 7, resulting in a change in the repulsive force on the moving magnet 6. By accurately controlling the magnitude and direction of the current in the electromagnetic coil 8, the position of the moving magnet 6 can be accurately controlled, thereby making the rollers 302 in the guide rings 301 at both ends of the drive frame 3 roll on the outer wall of the cooling guide tube 2, thereby driving the galvanometer body 4 to deflect quickly and accurately.

[0043] At the same time, it is connected with an external water source through the pipe joint 201. At this time, the flowing water enters the cooling guide pipe 2 to take away the heat generated when the roller 302 moves. At the same time, the flowing water drives the impeller 203 to rotate. At this time, the impeller 203 drives the fan blade 209 connected to the universal joint A208 to rotate, thereby accelerating the air flow and achieving the heat dissipation of the electromagnetic coil 8. At the same time, the impeller 203 drives the spiral scraper rod 205 connected to the connecting rod 204 to rotate. At this time, under the action of the annular rack 207, the spiral scraper rod 205 connected to the transmission wheel 206 will rotate, thereby removing the scale attached to the inner wall of the cooling guide pipe 2, thereby ensuring its thermal conductivity.

[0044] After the use of the galvanometer body 4 is completed, the bidirectional screw rod 901 is rotated to drive the two moving blocks 903 to move. At this time, the moving frame 904 on the moving block 903 will drive the protective cover 905 to move. At this time, under the action of the fixed rack A101, the adjusting wheel 908 will drive the connected worm 907 to rotate, so that the worm 907 drives the protective cover 905 connected to the worm wheel 906 to stand up. Then, when the sponge 910 on the protective cover 905 contacts the galvanometer body 4, under the action of the fixed rack B102, the driving wheel 911 will rotate, thereby driving the sponge 910 connected to the universal joint B909 to rotate, and the surface of the galvanometer body 4 is cleaned. Then, the protective cover 905 is covered on both sides of the galvanometer body 4 to protect it.

[0045] 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. An ultra-high-speed digital laser galvanometer drive device, comprising a housing (1), characterized in that: A cooling guide tube (2) is fixedly connected inside the housing (1), and pipe joints (201) are fixedly connected at both ends of the cooling guide tube (2). Two impeller seats (202) are fixedly connected at one end of one side of the cooling guide tube (2) in a centrally symmetrical structure. An impeller (203) is rotatably connected inside the impeller seat (202), and a connecting rod (204) is fixedly connected to the impeller (203). A spiral wall scraping rod (205) is rotatably connected at the other end of the connecting rod (204). The spiral wall scraping rod (205) is slidably contacted with the inner wall of the cooling guide tube (2), and a transmission wheel (206) is fixedly connected at one end of the spiral wall scraping rod (205). The impeller seat (202) is fixedly connected inside the impeller seat (202). An annular rack (207) is provided, and the transmission wheel (206) is meshed with the annular rack (207) for transmission. A driving frame (3) is slidably provided on the cooling guide tube (2), and a galvanometer body (4) is movably plugged on one end of the driving frame (3). Both sides of the driving frame (3) and the inner sides of both ends of the outer shell (1) are connected and fixedly provided with magnet mounting mechanisms (5), a movable magnet (6) is clamped in the magnet mounting mechanism (5) located on the driving frame (3), and a fixed magnet (7) is clamped in the magnet mounting mechanism (5) located on the outer shell (1), an electromagnetic coil (8) is fixedly installed in the position of the fixed magnet (7) in the outer shell (1), and a protective mechanism (9) is rotatably connected to the inner wall of the bottom end of the outer shell (1).

2. The ultra-high-speed digital laser galvanometer driving device according to claim 1, characterized in that: The other end of the impeller (203) is connected and fixedly provided with a universal joint A (208), and the other end of the universal joint A (208) passes through the inner wall of the cooling guide tube (2) and extends to the outside and is connected and fixedly provided with a fan blade (209).

3. The ultra-high-speed digital laser galvanometer driving device according to claim 1, characterized in that: Two guide rings (301) are fixedly connected at both ends of the drive frame (3); the inner wall of the guide ring (301) is annular in structure and rotatably connected to a plurality of rollers (302); the rollers (302) are arranged in sliding contact with the outer wall of the cooling guide tube (2); and a plug hole (303) is provided at the bottom middle end of the drive frame (3).

4. The ultra-high-speed digital laser galvanometer driving device according to claim 3, characterized in that: The galvanometer body (4) is connected and fixedly provided with an insertion rod (401), and both inner walls on the insertion rod (401) are slidably provided with limit blocks (402), the inner ends of the limit blocks (402) are connected and fixedly provided with a spring (403), and the other end of the spring (403) is connected and fixedly provided with the inner wall of the insertion rod (401), and the limit blocks (402) are movably engaged with the plug-in holes (303).

5. The ultra-high-speed digital laser galvanometer driving device according to claim 1, characterized in that: The magnet mounting mechanism (5) comprises a mounting seat (501), a plurality of limit rods (502) being rotatably connected to the mounting seat (501), one end of the limit rod (502) being in contact with the outer wall of the moving magnet (6), and a gear (503) being fixedly connected to one end of the limit rod (502).

6. The ultra-high-speed digital laser galvanometer driving device according to claim 5, characterized in that: A movable disk (504) is slidably provided on the inner wall of the mounting seat (501); a plurality of tension springs (505) are connected and fixedly provided on one side of the movable disk (504); the other end of the tension spring (505) is connected and fixedly provided on the inner wall of the mounting seat (501); a plurality of racks (506) are connected and fixedly provided on the other side of the movable disk (504); the other end of the racks (506) passes through the inner wall of the mounting seat (501) and extends to the outside; the outer end of the racks (506) is meshed with the gear (503) for transmission.

7. The ultra-high-speed digital laser galvanometer driving device according to claim 6, characterized in that: An adjusting rod (507) is provided through a threaded connection on the inner wall of the mounting seat (501); one end of the adjusting rod (507) located in the mounting seat (501) is connected and fixedly provided with a push rod (508); one side of the movable plate (504) connected to the tension spring (505) is connected and fixedly provided with a triangular block (509); the push rod (508) is provided in sliding contact with the triangular block (509).

8. The ultra-high-speed digital laser galvanometer driving device according to claim 1, characterized in that: The protective mechanism (9) comprises a bidirectional screw rod (901), the bidirectional screw rod (901) is rotatably connected to the inner wall of the bottom end of the housing (1), the outer end of the bidirectional screw rod (901) is connected and fixedly provided with a knob (902), the outer walls of both ends of the bidirectional screw rod (901) are threadedly connected to move blocks (903), the move blocks (903) are connected and fixedly provided with a move frame (904), the move frame (904) is rotatably connected to a protective cover (905), one end of the protective cover (905) is connected and fixedly provided with a worm wheel (906), and one side of the worm wheel (906) is meshingly provided with a worm (907), The worm (907) is rotatably connected to the movable frame (904); an adjusting wheel (908) is fixedly connected to one end of the worm (907); the adjusting wheel (908) is meshed with a fixed rack A (101) connected to the inner wall of the bottom end of the housing (1) for transmission; a universal joint B (909) is rotatably connected to the protective cover (905); a sponge (910) is fixedly connected to one end of the universal joint B (909); a driving wheel (911) is fixedly connected to the other end of the universal joint B (909); the driving wheel (911) is meshed with a fixed rack B (102) connected to the inner wall of the bottom end of the housing (1) for transmission.

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