Laser distance adjusting mechanism of keyboard laser carving machine and using method of laser distance adjusting mechanism

Abstract

The invention discloses a laser distance adjusting mechanism of a keyboard laser carving machine and a using method of the laser distance adjusting mechanism. The laser distance adjusting mechanism comprises a machining table, a machine cabinet, a table plate arranged at the top of the machine cabinet and a base plate arranged at the top of the table plate; and the square barrel shell is arranged on one side of the table plate, an adjusting assembly is arranged in the square barrel shell, and the adjusting assembly comprises a screw rotationally arranged in the square barrel shell and a bearing plate in threaded connection with the screw. The laser distance between the laser carving machine head and the keyboard is preliminarily adjusted by rotating the screw rod, then the locking piece is unlocked, the driving rod is pulled up to be separated from the screw rod, the driving gear of the driving rod is meshed with the driven gear of the rotating shaft, and the transverse sliding rail and the laser carving machine head move up and down in a small range through transmission of the rotating shaft, the worm, the worm gear and the fine adjustment gear; and the laser spacing between the laser carving machine head and the keyboard is finely adjusted, so that the laser spacing is accurately adjusted, and the size or size of patterns carved on the keyboard is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of laser beam processing, and particularly to a laser spacing adjustment mechanism of a keyboard laser engraving machine and its usage method. Background Art

[0002] A laser engraving machine is an engraving device used in the intelligent heat treatment production line of keyboards. It uses a laser beam to engrave permanent marks on the surface of substances or inside transparent substances. The laser beam can produce two effects on substances: chemical transformation effect and physical effect. When a substance instantaneously absorbs the laser light, physical or chemical reactions occur, thereby engraving traces or displaying patterns or characters. Therefore, it is also called a laser marking machine or a laser engraving machine.

[0003] During the production and processing of keyboards, a laser engraving machine is generally used to engrave logos or other iconic characters and patterns on the keyboards. Existing laser engraving machines generally adjust the laser spacing between the laser engraving head and the keyboard through a screw. Since the laser engraving head moves a large distance along the screw when the screw rotates, it is difficult to accurately adjust the laser spacing, resulting in the patterns engraved on the keyboard being either large or small. Therefore, the present invention proposes a laser spacing adjustment mechanism of a keyboard laser engraving machine and its usage method to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a laser spacing adjustment mechanism of a keyboard laser engraving machine and its usage method to solve the problem that existing laser engraving machines generally adjust the laser spacing between the laser engraving head and the keyboard through a screw. Since the laser engraving head moves a large distance along the screw when the screw rotates, it is difficult to accurately adjust the laser spacing, resulting in the patterns engraved on the keyboard being either large or small as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A laser spacing adjustment mechanism of a keyboard laser engraving machine, including a processing table, which includes a cabinet, a table board arranged on the top of the cabinet, and a backing board arranged on the top of the table board; A square barrel shell is arranged on one side of the table board. An adjustment component is arranged inside the square barrel shell. The adjustment component includes a screw rotatably arranged inside the square barrel shell and a bearing plate threadedly connected to the screw. A notch is arranged on one side of the square barrel shell, and the bearing plate is arranged inside the notch of the square barrel shell; A longitudinal slide rail is arranged on the other side of the table board, and a first slider is slidably arranged on the longitudinal slide rail; A transverse slide rail is vertically arranged between the square barrel shell and the longitudinal slide rail. One end of the transverse slide rail is movably connected to the bearing plate, the other end of the transverse slide rail is fixedly connected to the first slider of the longitudinal slide rail, and a laser engraving component is slidably arranged on the transverse slide rail.

[0006] As a preferred embodiment of the present invention, wherein: the adjusting assembly further includes a rotating shaft disposed on one side of the screw rod and a driving rod disposed at the top end of the screw rod. Support rods are provided on both sides of the screw rod and the rotating shaft. The screw rod and the rotating shaft are rotatably mounted on the support rods, and both ends of the support rods are mounted on the inner wall of the square barrel housing; The driving rod is inserted through the top of the square barrel housing. A rotating handle is provided at the top end of the driving rod, a spline shaft is provided at the bottom end of the driving rod, a spline groove is provided at the top end of the screw rod and is adapted to the spline shaft. A driving gear is provided on the driving rod, and a driven gear is provided at the top end of the rotating shaft. When the spline shaft of the driving rod is inserted into the spline groove of the screw rod, the driving gear on the driving rod is located below the driven gear of the screw rod.

[0007] As a preferred embodiment of the present invention, wherein: a square hole is provided on the bearing plate. The rotating shaft passes through the bearing plate and the square hole of the bearing plate. A worm is sleeved on the rotating shaft within the square hole of the bearing plate. A strip-shaped protrusion is provided on one side of the rotating shaft, and a slot adapted to the rotating shaft and the strip-shaped protrusion is provided in the middle of the worm. The rotating shaft and the strip-shaped protrusion are inserted into the slot of the worm; A turbine meshing with the worm is further provided in the square hole of the bearing plate. A connecting shaft is provided in the middle of the turbine. Fine adjustment gears are provided at both ends of the connecting shaft. Support plates are further provided on both sides of the turbine. One end of the support plate is inserted and connected with the connecting shaft, and the other end of the support plate is fixed to the inner wall of the square hole of the bearing plate.

[0008] As a preferred embodiment of the present invention, wherein: a card slot is provided at one end of the transverse slide rail close to the bearing plate. One end of the bearing plate away from the screw rod is mounted in the card slot of the transverse slide rail. Convex plates are formed on both sides of the card slot of the transverse slide rail. First strip-shaped teeth are provided at the ends of the two convex plates and are meshed with the fine adjustment gears.

[0009] As a preferred embodiment of the present invention, wherein: a locking member is further provided on the driving rod. The locking member includes a collar sleeved on the driving rod, an upper ring groove and a lower ring groove provided on the driving rod. The upper ring groove, the lower ring groove and the driving gear are arranged in sequence from top to bottom. The collar is fixed to the top of the square barrel housing. An inner ring groove is provided on the inner side wall of the collar. A sleeve is provided on one side of the collar. A pull rod is inserted through the sleeve. A spring is sleeved on the pull rod. The spring is located within the sleeve. A pull ring is provided at one end of the pull rod, and an arc-shaped clamping plate is provided at the other end of the pull rod.

[0010] As a preferred embodiment of the present invention, the following is provided: The arc-shaped clamping plate connected to the pull rod is arranged in the upper ring groove or the lower ring groove of the driving rod. When the arc-shaped clamping plate is clamped into the upper ring groove of the driving rod, the spline shaft of the driving rod is inserted into the spline groove of the screw. When the arc-shaped clamping plate is clamped into the lower ring groove of the driving rod, the driving gear of the driving rod meshes with the driven gear of the rotating shaft.

[0011] As a preferred embodiment of the present invention, the following is provided: The laser engraving assembly includes a second slider slidably arranged on the transverse slide rail, a bearing sleeve arranged on the second slider, a telescopic sleeve arranged in the bearing sleeve, and a laser engraving head arranged at one end of the telescopic sleeve. A cylinder is installed on one side of the bearing sleeve, and the output end of the cylinder is connected to the laser engraving head.

[0012] As a preferred embodiment of the present invention, the following is provided: A motor is arranged at the top of the second slider, a traveling gear is arranged at the output end of the motor, a second strip tooth is arranged on one side of the transverse slide rail, and the traveling gear on the output shaft of the motor meshes with the second strip tooth of the transverse slide rail.

[0013] A method for using a laser spacing adjustment mechanism of a keyboard laser engraving machine includes the following steps: S1. Place the keyboard to be processed on the backing plate of the processing table, start the cylinder, and make the output end of the cylinder push the laser engraving head and the telescopic sleeve to move, so that the laser engraving head is directly above the keyboard. S2. By pulling the pull ring, make the pull ring drive the pull rod and the arc-shaped clamping plate to move into the inner ring groove of the collar. The spring in the sleeve is in a compressed state. Then press the rotating handle to make the rotating handle push the driving rod downward until the spline shaft of the driving rod is completely inserted into the spline groove of the screw. Release the pull ring to make the spring rebound and push the arc-shaped clamping plate to move into the upper ring groove of the driving rod, so that the driving rod is connected to the screw. S3. Rotate the rotating handle to drive the driving rod and the screw to rotate. The bearing plate moves longitudinally along the screw, drives the transverse slide rail and the first slider to move substantially along the longitudinal slide rail through the bearing plate. The worm in the square hole of the bearing plate slides along the rotating shaft to preliminarily adjust the laser spacing between the laser engraving head and the keyboard. S4. Pull the pull ring again to make the pull ring drive the pull rod and the arc-shaped clamping plate to move into the inner ring groove of the collar. The spring in the sleeve is in a compressed state. Then pull the rotating handle to drive the driving rod to move upward until the driving gear of the driving rod meshes with the driven gear of the rotating shaft. Release the pull ring to make the spring rebound and push the arc-shaped clamping plate to move into the lower ring groove of the driving rod. S5. Rotate the crank handle again to drive the drive rod, the driving gear, the driven gear and the rotating shaft to rotate. Drive the worm, the worm gear, the connecting shaft and the fine-tuning gear to rotate through the rotating shaft. The fine-tuning gear drives the transverse slide rail and the first slider to move slightly along the longitudinal slide rail through the first strip teeth, so as to finely adjust the laser distance between the laser engraving head and the keyboard. S6. After the laser distance is adjusted, start the motor again to drive the walking gear to rotate through the output shaft of the motor. The walking gear drives the second slider to move along the transverse slide rail through the second strip teeth, and drives the bearing housing, the telescopic housing and the laser engraving head to move horizontally through the second slider, so as to perform laser engraving processing on the keyboard.

[0014] In the present invention, the laser distance between the laser engraving head and the keyboard is initially adjusted by rotating the screw rod. Then, unlock the locking member, separate the drive rod from the screw rod by pulling up the drive rod. The driving gear of the drive rod meshes with the driven gear of the rotating shaft. Through the transmission of the rotating shaft, the worm and worm gear, and the fine-tuning gear, the transverse slide rail and the laser engraving head move slightly up and down, so as to finely adjust the laser distance between the laser engraving head and the keyboard, thereby accurately adjusting the laser distance and avoiding the pattern engraved on the keyboard being too large or too small. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the internal structural schematic diagram of the square tube housing of the present invention; Figure 3 For the present invention Figure 2 is the enlarged structural schematic diagram at A in the present invention; Figure 4 For the present invention Figure 3 is the structural schematic diagram when the drive rod moves upward in the present invention; Figure 5 For the present invention Figure 2 is the enlarged structural schematic diagram at B in the present invention; Figure 6 is the structural schematic diagram of the locking member of the present invention; Figure 7 is the internal structural schematic diagram of the bearing plate of the present invention; Figure 8 is the structural schematic diagram of the laser engraving assembly of the present invention.

[0016] In the figure: 1, processing table; 12, cabinet; 13, table board; 14, backing plate; 2, square cylinder shell; 21, adjusting assembly; 211, screw rod; 2111, spline groove; 212, bearing plate; 2121, square hole; 213, rotating shaft; 2131, driven gear; 2132, worm; 214, driving rod; 2141, rotating handle; 2142, spline shaft; 2143, driving gear; 215, support rod; 216, turbine; 217, connecting shaft; 218, fine-tuning gear; 219, locking part; 2191, collar; 2192, upper annular groove; 2193, lower annular groove; 2194, sleeve; 2195, pull rod; 2196, spring; 2197, pull ring; 2198, arc-shaped clamping plate; 22, notch; 3, longitudinal slide rail; 31, first slider; 4, transverse slide rail; 41, laser engraving assembly; 411, second slider; 412, bearing housing; 413, telescopic housing; 414, laser engraving head; 415, air cylinder; 416, motor; 417, traveling gear; 42, card slot; 43, convex plate; 44, first strip tooth; 45, second strip tooth. Detailed implementation manner

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1 - 8 , a laser spacing adjustment mechanism of a keyboard laser engraving machine, including a processing table 1, including a cabinet 12, a table board 13 arranged on the top of the cabinet 12, and a backing plate 14 arranged on the top of the table board 13; A square cylinder shell 2 is arranged on one side of the table board 13. An adjusting assembly 21 is arranged in the square cylinder shell 2. The adjusting assembly 21 includes a screw rod 211 rotatably arranged in the square cylinder shell 2 and a bearing plate 212 threadedly connected to the screw rod 211. A notch 22 is arranged on one side of the square cylinder shell 2. The bearing plate 212 is arranged in the notch 22 of the square cylinder shell 2. Specifically, the width of the notch 22 is greater than the width of the bearing plate 212, and the length of the notch 22 is the same as the distance between the two support rods 215; A longitudinal slide rail 3 is arranged on the other side of the table board 13. A first slider 31 is slidably arranged on the longitudinal slide rail 3; A transverse slide rail 4 is vertically arranged between the square cylinder shell 2 and the longitudinal slide rail 3. One end of the transverse slide rail 4 is movably connected to the bearing plate 212, the other end of the transverse slide rail 4 is fixedly connected to the first slider 31 of the longitudinal slide rail 3, and a laser engraving assembly 41 is slidably arranged on the transverse slide rail 4.

[0019] In this embodiment, the adjusting assembly 21 further includes a rotating shaft 213 disposed on one side of the screw rod 211 and a driving rod 214 disposed at the top end of the screw rod 211. Support rods 215 are provided on both sides of the screw rod 211 and the rotating shaft 213. The screw rod 211 and the rotating shaft 213 are rotatably mounted on the support rods 215, and the two ends of the support rods 215 are mounted on the inner wall of the square barrel housing 2. Specifically, the driving rod 214 is coaxially arranged with the screw rod 211, and the top diameter of the driving rod 214 is the same as that of the screw rod 211. The thread on the screw rod 211 is located between the two support rods 215, so that the moving distance of the bearing plate 212 is limited between the two support rods 215; The driving rod 214 is inserted through the top of the square barrel housing 2. A rotating handle 2141 is provided at the top end of the driving rod 214, a spline shaft 2142 is provided at the bottom end of the driving rod 214, and a spline groove 2111 matching the spline shaft 2142 is provided at the top end of the screw rod 211. A driving gear 2143 is provided on the driving rod 214, and a driven gear 2131 is provided at the top end of the rotating shaft 213. When the spline shaft 2142 of the driving rod 214 is inserted into the spline groove 2111 of the screw rod 211, the driving gear 2143 on the driving rod 214 is located below the driven gear 2131 of the screw rod 211, so that when the driving rod 214 is connected to the screw rod 211 through the spline shaft 2142, the connection between the driving rod 214 and the rotating shaft 213 is disconnected, avoiding displacement between the horizontal slide rail 4 and the bearing plate 212; A square hole 2121 is provided on the bearing plate 212. The rotating shaft 213 penetrates through the bearing plate 212 and the square hole 2121 of the bearing plate 212. A worm 2132 is sleeved on the rotating shaft 213 in the square hole 2121 of the bearing plate 212. A strip-shaped protrusion is provided on one side of the rotating shaft 213, and a slot matching the rotating shaft 213 and the strip-shaped protrusion is provided in the middle of the worm 2132. The rotating shaft 213 and the strip-shaped protrusion are inserted into the slot of the worm 2132; It should be noted that through holes are provided on both the upper and lower sides of the bearing plate 212 at the square hole 2121. The diameter of the through holes is larger than the maximum outer diameter of the rotating shaft 213 and the strip-shaped protrusion. The rotating shaft 213 and the strip-shaped protrusion penetrate through the through holes of the bearing plate 212 and can rotate inside them. When the bearing plate 212 moves up and down, the worm 2132 can move along the rotating shaft 213; A turbine 216 meshing with the worm 2132 is further provided in the square hole 2121 of the bearing plate 212. A connecting shaft 217 is provided in the middle of the turbine 216. Fine adjustment gears 218 are provided at both ends of the connecting shaft 217. Support plates are further provided on both sides of the turbine 216. One end of the support plate is inserted and connected to the connecting shaft 217, and the other end of the support plate is fixed to the inner wall of the square hole 2121 of the bearing plate 212; One end of the horizontal slide rail 4 close to the bearing plate 212 is provided with a clamping groove 42. One end of the bearing plate 212 away from the screw rod 211 is installed in the clamping groove 42 of the horizontal slide rail 4. Convex plates 43 are formed on both sides of the clamping groove 42 of the horizontal slide rail 4. First strip teeth 44 are provided at the ends of the two convex plates 43 and are meshed with the fine-tuning gear 218. Through the cooperation of the fine-tuning gear 218 and the first strip teeth 44, a displacement is generated between the horizontal slide rail 4 and the bearing plate 212, so as to finely adjust the laser distance between the laser engraving head 414 and the keyboard.

[0020] In this embodiment, a locking member 219 is further provided on the driving rod 214. The locking member 219 includes a collar 2191 sleeved on the driving rod 214, an upper annular groove 2192 and a lower annular groove 2193 provided on the driving rod 214. The upper annular groove 2192, the lower annular groove 2193 and the driving gear 2143 are arranged in sequence from top to bottom. The collar 2191 is fixed to the top of the square cylinder shell 2. An inner annular groove is provided on the inner side wall of the collar 2191. A sleeve 2194 is provided on one side of the collar 2191. A pull rod 2195 is inserted in the sleeve 2194. A spring 2196 is sleeved on the pull rod 2195. The spring 2196 is located in the sleeve 2194. A pull ring 2197 is provided at one end of the pull rod 2195. An arc-shaped clamping plate 2198 is provided at the other end of the pull rod 2195. Specifically, the arc-shaped clamping plate 2198 cooperates with the upper annular groove 2192 and the lower annular groove 2193 on the driving rod 214. By clamping the arc-shaped clamping plate 2198 into the upper annular groove 2192 or the lower annular groove 2193 of the driving rod 214, the up and down movement of the driving rod 214 is restricted.

[0021] In this embodiment, the arc-shaped clamping plate 2198 connected to the pull rod 2195 is arranged in the upper annular groove 2192 or the lower annular groove 2193 of the driving rod 214. When the arc-shaped clamping plate 2198 is clamped into the upper annular groove 2192 of the driving rod 214, the spline shaft 2142 of the driving rod 214 is inserted into the spline groove 2111 of the screw rod 211. When the arc-shaped clamping plate 2198 is clamped into the lower annular groove 2193 of the driving rod 214, the driving gear 2143 of the driving rod 214 is meshed with the driven gear 2131 of the rotating shaft 213.

[0022] In this embodiment, the laser engraving assembly 41 includes a second slider 411 slidably arranged on the horizontal slide rail 4, a bearing sleeve 412 arranged on the second slider 411, a telescopic sleeve 413 arranged in the bearing sleeve 412, and a laser engraving head 414 arranged at one end of the telescopic sleeve 413. A cylinder 415 is installed on one side of the bearing sleeve 412. The output end of the cylinder 415 is connected to the laser engraving head 414; A motor 416 is provided at the top of the second slider 411. A traveling gear 417 is provided at the output end of the motor 416. A second strip tooth 45 is provided on one side of the transverse slide rail 4. The traveling gear 417 on the output shaft of the motor 416 meshes with the second strip tooth 45 of the transverse slide rail 4.

[0023] The usage method of the laser spacing adjustment mechanism of the keyboard laser engraving machine of the present invention includes the following steps: S1. Place the keyboard to be processed on the backing plate 14 of the processing table 1, start the cylinder 415, and make the output end of the cylinder 415 push the laser engraving head 414 and the telescopic housing 413 to move, so that the laser engraving head 414 is directly above the keyboard. S2. By pulling the pull ring 2197, make the pull ring 2197 drive the pull rod 2195 and the arc-shaped clamping plate 2198 to move into the inner ring groove of the collar 2191. The spring 2196 in the sleeve 2194 is in a compressed state. Then press the rotating handle 2141 to make the rotating handle 2141 push the driving rod 214 downward until the spline shaft 2142 of the driving rod 214 is completely inserted into the spline groove 2111 of the screw 211. Release the pull ring 2197 to make the spring 2196 rebound and push the arc-shaped clamping plate 2198 to move into the upper ring groove 2192 of the driving rod 214, so that the driving rod 214 is connected to the screw 211. S3. Rotate the rotating handle 2141 to make the rotating handle 2141 drive the driving rod 214 and the screw 211 to rotate. The bearing plate 212 moves longitudinally along the screw 211, and drives the transverse slide rail 4 and the first slider 31 to move substantially along the longitudinal slide rail 3 through the bearing plate 212. The worm 2132 in the square hole 2121 of the bearing plate 212 slides along the rotating shaft 213 to initially adjust the laser spacing between the laser engraving head 414 and the keyboard. S4. Pull the pull ring 2197 again to make the pull ring 2197 drive the pull rod 2195 and the arc-shaped clamping plate 2198 to move into the inner ring groove of the collar 2191. The spring 2196 in the sleeve 2194 is in a compressed state. Then pull the rotating handle 2141 to make the rotating handle 2141 drive the driving rod 214 to move upward until the driving gear 2143 of the driving rod 214 meshes with the driven gear 2131 of the rotating shaft 213. Release the pull ring 2197 to make the spring 2196 rebound and push the arc-shaped clamping plate 2198 to move into the lower ring groove 2193 of the driving rod 214. S5. Rotate the rotating handle 2141 again to make the rotating handle 2141 drive the driving rod 214, the driving gear 2143, the driven gear 2131 and the rotating shaft 213 to rotate. Drive the worm 2132, the worm wheel, the connecting shaft 217 and the fine adjustment gear 218 to rotate through the rotating shaft 213. The fine adjustment gear 218 drives the transverse slide rail 4 and the first slider 31 to move slightly along the longitudinal slide rail 3 through the first strip tooth 44 to finely adjust the laser spacing between the laser engraving head 414 and the keyboard. After the laser spacing adjustment is completed, start the motor 416 again, so that the output shaft of the motor 416 drives the walking gear 417 to rotate. The walking gear 417 drives the second slider 411 to move along the transverse slide rail 4 through the second strip, and drives the bearing housing 412, the telescopic housing 413 and the laser engraving head 414 to move horizontally through the second slider 411, so as to perform laser engraving on the keyboard.

[0024] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A laser spacing adjustment mechanism for a keyboard laser engraving machine, characterized in that: include, A processing table (1) comprises a cabinet (12), a tabletop (13) arranged on the top of the cabinet (12), and a pad (14) arranged on the top of the tabletop (13); A square cylindrical shell (2) is arranged on one side of the platform (13); an adjusting assembly (21) is arranged inside the square cylindrical shell (2); the adjusting assembly (21) comprises a screw (211) rotatably arranged inside the square cylindrical shell (2) and a bearing plate (212) threadably connected to the screw (211); a notch (22) is arranged on one side of the square cylindrical shell (2); and the bearing plate (212) is arranged inside the notch (22) of the square cylindrical shell (2); A longitudinal slide rail (3) is arranged on the other side of the platform (13), and a first sliding block (31) is slidably arranged on the longitudinal slide rail (3); A transverse slide rail (4) is vertically arranged between the square cylinder shell (2) and the longitudinal slide rail (3); one end of the transverse slide rail (4) is movably connected to the bearing plate (212); the other end of the transverse slide rail (4) is fixedly connected to the first slider (31) of the longitudinal slide rail (3); and a laser engraving component (41) is slidably arranged on the transverse slide rail (4).

2. The laser spacing adjustment mechanism of the keyboard laser engraving machine according to claim 1, characterized in that: The adjustment assembly (21) further comprises a rotating shaft (213) arranged at one side of the screw rod (211) and a driving rod (214) arranged at the top end of the screw rod (211); support rods (215) are arranged on both sides of the screw rod (211) and the rotating shaft (213); the screw rod (211) and the rotating shaft (213) are both rotatably mounted on the support rods (215); and both ends of the support rods (215) are mounted on the inner wall of the square cylinder shell (2); The driving rod (214) is inserted and arranged at the top of the square cylindrical shell (2); a rotating handle (2141) is arranged at the top of the driving rod (214); a spline shaft (2142) is arranged at the bottom of the driving rod (214); a spline groove (2111) matching with the spline shaft (2142) is arranged at the top of the screw rod (211); a driving gear (2143) is arranged on the driving rod (214); and a driven gear (2131) is arranged at the top of the rotating shaft (213); when the spline shaft (2142) of the driving rod (214) is inserted into the spline groove (2111) of the screw rod (211), the driving gear (2143) on the driving rod (214) is located below the driven gear (2131) of the screw rod (211).

3. The laser spacing adjustment mechanism of the keyboard laser engraving machine according to claim 2, characterized in that: The bearing plate (212) is provided with a square hole (2121); the rotating shaft (213) passes through the bearing plate (212) and the square hole (2121) of the bearing plate (212); the rotating shaft (213) is located in the square hole (2121) of the bearing plate (212) and is sleeved with a worm (2132); a strip-shaped protrusion is provided on one side of the rotating shaft (213); a slot matching the rotating shaft (213) and the strip-shaped protrusion is provided in the middle of the worm (2132); the rotating shaft (213) and the strip-shaped protrusion are inserted into the slot of the worm (2132); A turbine (216) meshing with the worm (2132) is also arranged in the square hole (2121) of the bearing plate (212), a connecting shaft (217) is arranged in the middle of the turbine (216), and fine-tuning gears (218) are arranged at both ends of the connecting shaft (217). Support plates are also arranged on both sides of the turbine (216), one end of the support plate is inserted and connected with the connecting shaft (217), and the other end of the support plate is fixed to the inner wall of the square hole (2121) of the bearing plate (212).

4. The laser spacing adjustment mechanism of the keyboard laser engraving machine according to claim 3, characterized in that: A slot (42) is formed at one end of the transverse slide rail (4) close to the carrier plate (212); an end of the carrier plate (212) away from the screw rod (211) is mounted in the slot (42) of the transverse slide rail (4); convex plates (43) are formed on both sides of the slot (42) of the transverse slide rail (4); first strip teeth (44) are provided at the ends of the two convex plates (43) and mesh with the fine-tuning gear (218).

5. The laser spacing adjustment mechanism of the keyboard laser engraving machine according to claim 4, characterized in that: The driving rod (214) is further provided with a locking member (219), the locking member (219) comprising a collar (2191) sleeved on the driving rod (214), an upper ring groove (2192) and a lower ring groove (2193) provided on the driving rod (214), the upper ring groove (2192), the lower ring groove (2193) and the driving gear (2143) being arranged in sequence from top to bottom, the collar (2191) being fixed to the top of the square cylinder shell (2), and the collar (2191) being fixed to the top of the square cylinder shell (2). An inner ring groove is provided on the inner side wall of the ring (2191); a sleeve (2194) is provided on one side of the sleeve ring (2191); a pull rod (2195) is inserted into the sleeve (2194); a spring (2196) is sleeved on the pull rod (2195); the spring (2196) is located in the sleeve (2194); a pull ring (2197) is provided at one end of the pull rod (2195); and an arc-shaped clamping plate (2198) is provided at the other end of the pull rod (2195).

6. The laser spacing adjustment mechanism of the keyboard laser engraving machine according to claim 5, characterized in that: The arc-shaped clamping plate (2198) connected to the pull rod (2195) is arranged in the upper ring groove (2192) or the lower ring groove (2193) of the driving rod (214); when the arc-shaped clamping plate (2198) is clamped into the upper ring groove (2192) of the driving rod (214), the spline shaft (2142) of the driving rod (214) is inserted into the spline groove (2111) of the screw rod (211); when the arc-shaped clamping plate (2198) is clamped into the lower ring groove (2193) of the driving rod (214), the driving gear (2143) of the driving rod (214) is meshed with the driven gear (2131) of the rotating shaft (213).

7. The laser spacing adjustment mechanism of the keyboard laser engraving machine according to claim 6, characterized in that: The laser engraving assembly (41) comprises a second slider (411) slidably arranged on the transverse slide rail (4), a bearing sleeve (412) arranged on the second slider (411), a telescopic sleeve (413) arranged in the bearing sleeve (412), and a laser engraving head (414) arranged at one end of the telescopic sleeve (413), a cylinder (415) being installed on one side of the bearing sleeve (412), and an output end of the cylinder (415) being connected to the laser engraving head (414).

8. The laser spacing adjustment mechanism of the keyboard laser engraving machine according to claim 7, characterized in that: A motor (416) is arranged at the top of the second sliding block (411), a travel gear (417) is arranged at the output end of the motor (416), a second strip-shaped tooth (45) is arranged at one side of the transverse sliding rail (4), and the travel gear (417) on the output shaft of the motor (416) meshes with the second strip-shaped tooth (45) of the transverse sliding rail (4).

9. The method for using the laser spacing adjustment mechanism of the keyboard laser engraving machine according to claim 8, characterized in that: The following steps are involved: S1. Place the keyboard to be processed on the pad (14) of the processing table (1), start the cylinder (415), and make the output end of the cylinder (415) push the laser engraving head (414) and the telescopic shell (413) to move, so that the laser engraving head (414) is directly above the keyboard. S2, by pulling the pull ring (2197), the pull ring (2197) drives the pull rod (2195) and the arc-shaped clamping plate (2198) to move into the inner ring groove of the sleeve (2191), and the spring (2196) in the sleeve (2194) is in a compressed state, and then the rotary handle (2141) is pressed, so that the rotary handle (2141) pushes the driving rod (214) to move downward until the spline shaft (2142) of the driving rod (214) is completely inserted into the spline groove (2111) of the screw rod (211), and the pull ring (2197) is released, so that the spring (2196) rebounds and pushes the arc-shaped clamping plate (2198) to move into the upper ring groove (2192) of the driving rod (214), so that the driving rod (214) is connected to the screw rod (211); S3, rotating the rotary handle (2141), so that the rotary handle (2141) drives the driving rod (214) and the screw rod (211) to rotate, and the supporting plate (212) moves longitudinally along the screw rod (211), and the horizontal slide rail (4) and the first slide block (31) are driven by the supporting plate (212) to move significantly along the longitudinal slide rail (3), and the worm (2132) in the square hole (2121) of the supporting plate (212) slides along the rotating shaft (213), and the laser distance between the laser engraving machine head (414) and the keyboard is preliminarily adjusted; S4, pulling the pull ring (2197) again, so that the pull ring (2197) drives the pull rod (2195) and the arc-shaped clamping plate (2198) to move into the inner ring groove of the sleeve (2191), and the spring (2196) in the sleeve (2194) is in a compressed state, and then pulling the rotary handle (2141) so that the rotary handle (2141) drives the driving rod (214) to move upward until the driving gear (2143) of the driving rod (214) is meshed with the driven gear (2131) of the rotating shaft (213), and then releasing the pull ring (2197), so that the spring (2196) rebounds and pushes the arc-shaped clamping plate (2198) to move into the lower ring groove (2193) of the driving rod (214); S5. The rotary handle (2141) is rotated again, so that the rotary handle (2141) drives the driving rod (214), the driving gear (2143), the driven gear (2131) and the rotating shaft (213) to rotate, and the rotating shaft (213) drives the worm (2132), the worm wheel, the connecting shaft (217) and the fine-tuning gear (218) to rotate. The fine-tuning gear (218) drives the transverse slide rail (4) and the first slider (31) to move slightly along the longitudinal slide rail (3) through the first strip teeth (44), so as to fine-tune the laser spacing between the laser engraving machine head (414) and the keyboard; S6. After the laser spacing adjustment is completed, the motor (416) is started again, so that the output shaft of the motor (416) drives the travel gear (417) to rotate, and the travel gear (417) drives the second slider (411) to move along the transverse slide rail (4) through the second bar, and drives the bearing shell (412), the telescopic shell (413) and the laser engraving head (414) to move transversely through the second slider (411), so as to perform laser engraving on the keyboard.

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