Laser galvanometer offset correction device

Abstract

The present invention discloses a laser galvanometer offset correction device, and relates to the technical field of mirror offset correction. The present invention comprises an outer protective shell, a Y-axis galvanometer motor is arranged on one side of the outer protective shell, a beam combining mirror is arranged on the other side of the outer protective shell, an X-axis galvanometer motor is arranged above the Y-axis galvanometer motor, a visual imaging component is arranged above the outer protective shell, a field mirror is arranged below the outer protective shell, a cabinet is arranged inside the outer protective shell, a U-shaped plate is arranged on the left side of the cabinet, a fixed plate is arranged on the right side of the cabinet, and a motor is arranged at the bottom edge of the fixed plate, a workbench is arranged on the left side of the top of the cabinet, a welding assembly is arranged on the top of the inner wall of the U-shaped plate, and the welding assembly is laser welded, and a reciprocating screw is rotatably installed at the top edge of the fixed plate. The present invention realizes the correction of the orientation of the laser galvanometer assembly by adjusting the mounting plate, distinguishes the shaking of the laser galvanometer assembly caused by manual adjustment, and avoids the offset of the optical elements inside the laser galvanometer assembly.

Description

Technical Field

[0001] The invention relates to the technical field of mirror deviation correction, and in particular to a laser galvanometer deviation correction device. Background Art

[0002] Laser scanner, also called laser galvanometer, consists of an XY optical scanning head, an electronic drive amplifier and an optical reflective lens. The signal provided by the computer controller drives the optical scanning head through the drive amplifier circuit, thereby controlling the deflection of the laser beam in the XY plane. In the process of using the galvanometer for precision laser processing, it is necessary to frequently perform high-precision calibration on it.

[0003] The patent with the patent announcement number CN218745638U discloses a laser galvanometer offset correction device, including a workbench and a galvanometer body, a work plate fixedly connected to one side of the workbench near the bottom edge, a correction displacement motor fixedly connected to the top of the work plate near the workbench, a control threaded rod fixedly connected to the output end of the correction displacement motor, a mounting plate threadedly connected to the outer wall of the control threaded rod, and the mounting plate and the galvanometer body are bolted. This patent, through the use of the mounting plate, can replace the position adjustment of the galvanometer body with the movement of the mounting plate, so that the position correction of the galvanometer can be more convenient, and the use of a motor for position correction is more labor-saving than manual correction. The distance between the infrared rangefinder and the reflective prism is measured, so that the displacement distance of the galvanometer body can be indirectly known.

[0004] However, the device still has some shortcomings: the device can replace the position adjustment of the galvanometer body with the movement of the mounting plate, but the traditional folding mirror is fixedly installed, which causes the reflected light beam to be vertical during use, causing the folding mirror to focus on zero aberration, increasing the cost of use while failing to guarantee good workpiece processing accuracy and making it difficult to guarantee the quality of the finished product. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a laser galvanometer offset correction device, which solves the problem in the above background technology that the traditional refracting mirror is fixedly installed, which causes the reflected light beam to be vertical during use, resulting in zero aberration of the refracting mirror focus, increasing the cost of use and failing to ensure good workpiece processing accuracy.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser galvanometer offset correction device, comprising an outer protective shell, a Y-axis galvanometer motor is arranged on one side of the outer protective shell, a beam combining mirror is arranged on the other side of the outer protective shell, an X-axis galvanometer motor is arranged above the Y-axis galvanometer motor, a visual imaging component is arranged above the outer protective shell, a field mirror is arranged below the outer protective shell, a cabinet is arranged inside the outer protective shell, a U-shaped plate is arranged on the left side of the cabinet, a fixed plate is arranged on the right side of the cabinet, and an electric A machine, a workbench is arranged on the left side of the top of the cabinet, a welding assembly is arranged on the top of the inner wall of the U-shaped plate, and the welding assembly is laser welded, a reciprocating screw is rotatably installed at the top edge of the fixed plate, a mounting plate is penetrated and slidably installed on the outer wall of the reciprocating screw, a limit rod is penetrated and slidably installed on the inner edge of the mounting plate, a laser galvanometer assembly is arranged inside the mounting plate, a telescopic rod is fixedly installed at the bottom of the inner wall of the square groove on the right side of the top of the cabinet, and a motor is arranged inside the telescopic end of the telescopic rod, and the top of the motor output end inside the telescopic end of the telescopic rod A refracting mirror is fixedly installed on the top, a U-shaped light absorbing plate is fixedly installed on the front and back of the mounting plate, an arc-shaped reflective plate is fixedly installed on the inner wall of the left side of the U-shaped light absorbing plate, and a connecting plate is fixedly installed on the front of the inner wall of the U-shaped light absorbing plate. The material is placed on the top of the workbench, the U-shaped plate limits the welding assembly, and the welding assembly performs laser welding on the material; when the orientation of the laser galvanometer assembly needs to be corrected, the motor is started, and the output end of the motor drives the reciprocating screw to rotate. When the reciprocating screw rotates, it is limited by its own spiral groove and the internal block of the mounting plate, as well as the limit The positioning rod limits the mounting plate, so when the reciprocating screw rotates, the mounting plate can slide up and down along the outer wall of the reciprocating screw, and the mounting plate drives the laser galvanometer assembly to move synchronously; when the mounting plate moves up and down, it drives the U-shaped light-absorbing plate to move up and down, and the U-shaped light-absorbing plate pulls the arc-shaped reflective plate to slide up and down along the inner wall of the U-shaped plate. At the same time, the U-shaped light-absorbing plate pulls the telescopic end of the telescopic rod to retract up and down through the connecting plate. At this time, the refracting mirror starts to rotate through the output end of the motor inside the telescopic end of the telescopic rod to refract the scanning light beam of the laser galvanometer assembly, and reflects it through the arc-shaped reflective plate.

[0007] According to the above technical solution, the bottom of the limit rod is fixedly installed at the top edge of the fixed plate, there are two U-shaped light absorbing plates, and the U-shaped light absorbing plates are symmetrically distributed in the cabinet, a plurality of ventilation holes are opened on the surface of the U-shaped light absorbing plate, the arc surface of the arc reflector is slidably installed on the left side of the inner wall of the U-shaped plate, one end of the back side of the connecting plate is fixedly installed on the outer wall surface of the telescopic end of the telescopic rod, and the bottom of the mounting plate is provided with an expelling device for absorbing fog around the laser galvanometer assembly when the laser galvanometer assembly is corrected.

[0008] According to the above technical solution, the expelling device includes two vertical plates, a rotating wheel, a hollow rod and a rotating plate. The tops of the two vertical plates are fixedly installed on the bottom of the mounting plate. The rotating wheel is rotatably installed on the inner wall of the vertical plate away from the center of the mounting plate, and the right side of the outer wall of the cabinet is located on the movement trajectory of the outer wall of the rotating wheel. The front and back sides of the hollow rod are fixedly installed on the inner wall of the rotating wheel. The front and back sides of the rotating plate are slidably installed on the surface of the rotating wheel close to the center of the mounting plate through springs. When the mounting plate moves downward, it drives the vertical plates to move synchronously, and the vertical plates drive the rotating wheel to move synchronously. When the outer wall of the rotating wheel contacts the outer wall of the cabinet, friction is generated and the rotation begins. When the rotating wheel rotates, it drives the hollow rod to rotate, and when the hollow rod rotates, it drives the rotating plate to rotate.

[0009] According to the above technical solution, the expulsion device also includes an arc groove rod, a connecting column and an arc surface ring. The front and back sides of the arc groove rod are fixedly installed inside the hollow rod, and the left end of the connecting column is slidably installed inside the arc groove of the arc groove rod. The right side of the inner wall of the arc surface ring is fixedly installed on the right side of the connecting column, and the outer wall of the arc surface ring is slidably connected to the inner wall of the hollow rod. At the same time, when the hollow rod rotates, the arc groove rod is driven to rotate. When the arc groove rod rotates, the arc groove of the arc groove rod restricts the connecting column through its own arc groove, causing the connecting column to slide back and forth inside the arc groove of the arc groove rod.

[0010] According to the above technical solution, the expelling device also includes a trapezoidal block and a drying plate. The bottom of the trapezoidal block passes through and is slidably installed inside the rotating plate. The inclined surface of the trapezoidal block passes through the outer wall of the hollow rod, and the inclined surface of the trapezoidal block is located on the arc surface motion trajectory of the arc ring. The bottom of the drying plate is fixedly installed on the top of the trapezoidal block, and the left side of the trapezoidal block is slidably installed on the left side of the inner wall of the rotating plate through a spring. A circulation device for ensuring air circulation and constant temperature around the processing equipment is arranged around the U-shaped light absorbing plate. The connecting column drives the arc ring to slide synchronously. When the arc ring slides, it contacts the inclined surface of the trapezoidal block to promote the resistance force. The trapezoidal block moves upward through the resistance force and pushes the drying plate to move synchronously. When the drying plate continues to slide and contacts the top of the inner wall of the rotating plate, the continuous force of the arc ring causes the rotating plate at the top of the drying plate to slide synchronously along the inner wall of the rotating wheel. When the arc ring is reset, the rotating plate and the drying plate are reset by the spring elastic force, and this is repeated repeatedly.

[0011] The U-shaped light absorbing plate is fixedly mounted on the vertical surface of the transmission plate away from the center of the cabinet, and the transmission plate is fixedly mounted on the inner wall of the U-shaped light absorbing plate away from the telescopic rod. The semi-arc block is fixedly mounted on the vertical surface of the inner wall of the transmission plate, and the arc surface of the protrusion is located on the movement trajectory of the semi-arc block. When the U-shaped light absorbing plate moves up and down, it drives the transmission plate to move synchronously, and the transmission plate drives the semi-arc block to move up and down. When the semi-arc block moves up and down, the arc surface contacts the arc surface of the protrusion to generate a resistance force, prompting the baffle plate to block the ventilation hole of the U-shaped light absorbing plate, thereby providing a darker scanning environment for the laser galvanometer assembly. At the same time, when the semi-arc block passes through the protrusion, the baffle plate is reset by the torsion spring. Therefore, during the calibration of the laser galvanometer assembly, the baffle plate will swing back and forth through the resistance force between the protrusion and the semi-arc block. When scanning starts, the baffle plate blocks the ventilation hole of the U-shaped light absorbing plate to prevent light leakage.

[0012] According to the above technical solution, the circulation device also includes a horizontal plate and a vertical rod. The horizontal plate is fixedly installed on the outer wall of the cabinet near one side of the telescopic rod. The bottom of the vertical rod is rotatably installed on the top of the horizontal plate, and a spiral groove is opened on a section of the vertical rod near the top. The U-shaped light-absorbing plate drives the L-shaped rod to move up and down, and the L-shaped rod drives the sliding ring to slide back and forth along the spiral groove on the outer wall of the vertical rod. Through the limitation of the non-self-locking spiral groove on the outer wall of the vertical rod and the contact between the built-in block of the sliding ring and the inner wall of the spiral groove, the vertical rod generates a rotational force and starts to rotate relying on the top of the horizontal plate.

[0013] According to the above technical solution, the circulation device also includes an L-shaped rod, a sliding ring and a spiral sheet. The bottom of the L-shaped rod is fixedly installed on the top of the U-shaped light-absorbing plate, the inner wall of the sliding ring is sleeved and slidably installed on the outer wall of the spiral groove of the vertical rod, and the outer wall of the sliding ring is fixedly installed on the front of the top of the L-shaped rod, and the inner wall of the spiral sheet is fixedly installed on the smooth surface of the outer wall of the vertical rod. When the vertical rod rotates, the spiral sheet is driven to rotate, and multiple spiral sheets rotate at the adjacent ventilation holes of the U-shaped light-absorbing plate to disturb the airflow, and rotate to intercept the dust carried in the airflow entering the U-shaped light-absorbing plate.

[0014] The present invention provides a laser galvanometer offset correction device, which has the following beneficial effects:

[0015] (1) The present invention realizes correction of the orientation of the laser galvanometer assembly by adjusting the mounting plate through the coordination of a motor, a reciprocating screw, a mounting plate, a limit rod and a laser galvanometer assembly, thereby distinguishing the shaking of the laser galvanometer assembly caused by manual adjustment and avoiding the displacement of the optical elements inside the laser galvanometer assembly; through the coordination of a telescopic rod, a folding mirror, a U-shaped light absorbing plate, an arc-shaped reflective plate and a connecting plate, the arc-shaped reflective plate, the folding mirror and the laser galvanometer assembly are always in the same plane to avoid polarization, and when the folding mirror rotates at a constant speed, the refracted light beam is focused and does not change direction, thereby reducing the use cost and ensuring good workpiece processing accuracy.

[0016] (2) The present invention, through the arrangement of an expelling device, cooperates with a mounting plate, a vertical plate, a rotating wheel, a hollow rod and a rotating plate, and achieves the expelling and absorption of water mist generated by the temperature difference around the mounting plate caused by the heating of the equipment during operation, thereby preventing the water mist from eroding the laser galvanometer component and causing the mirror surface to be atomized and dripping, thereby preventing the laser scanning accuracy from being reduced; through the cooperation of an arc groove rod, a connecting column, an arc surface ring, a trapezoidal block and a drying plate, the rotation absorption range of the rotating plate is effectively expanded, and the drying plate slides back and forth frictionally inside the rotating plate, frictionally drying the water mist absorbed by the rotating plate, thereby ensuring the overall dryness of the rotating plate for a long time, and preventing the water mist from evaporating too slowly and reducing the absorption efficiency of subsequent water mist.

[0017] (3) The present invention sets a circulation device, and cooperates with a U-shaped light-absorbing plate, a shielding plate, a protrusion, a transmission plate and a semi-arc block. The above cooperation ensures the air circulation inside the U-shaped light-absorbing plate while effectively avoiding the interference of ambient light on the laser scanning process of the laser galvanometer assembly; through the cooperation of a horizontal plate, a vertical rod, an L-shaped rod, a sliding ring and a spiral sheet, the above cooperation enables the external airflow to quickly enter or discharge the processing area when the laser galvanometer assembly is calibrated, thereby avoiding the accumulation of oxygen and preventing dust from floating and affecting the propagation and correction of the light beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram showing the main mechanism of the present invention;

[0019] Figure 2 It is a schematic diagram showing the internal device of the main mechanism of the present invention;

[0020] Figure 3 A schematic diagram of the present invention as a whole;

[0021] Figure 4 It is a bottom perspective schematic diagram of the present invention as a whole;

[0022] Figure 5 It is a schematic diagram of the peripheral structure of the refracting mirror of the present invention;

[0023] Figure 6 It is a schematic diagram of the hidden structure of the peripheral part of the folding mirror of the present invention;

[0024] Figure 7 It is a schematic diagram of the expelling device of the present invention;

[0025] Figure 8 It is a schematic diagram of the internal structure of part of the expelling device of the present invention;

[0026] Fig. 9 It is a schematic diagram of the circulation device of the present invention;

[0027] Fig.10 For the present invention Figure 8A schematic diagram of the enlarged structure in the middle.

[0028] In the figure: 1, cabinet; 101, Y-axis galvanometer motor; 102, X-axis galvanometer motor; 103, visual imaging component; 104, 45-degree beam combiner; 105, field mirror; 2, U-shaped plate; 21, fixed plate; 22, workbench; 3, welding component; 4, expelling device; 41, vertical plate; 42, rotating wheel; 43, hollow rod; 44, rotating plate; 45, arc groove rod; 46, connecting column; 47, arc surface ring; 48, trapezoidal block; 4 9. Drying plate; 5. Circulation device; 51. Shielding plate; 52. Bump; 53. Transmission plate; 54. Semi-arc block; 55. Horizontal plate; 56. Vertical rod; 57. L-shaped rod; 58. Sliding ring; 59. Spiral sheet; 6. Reciprocating screw rod; 7. Mounting plate; 8. Limit rod; 9. Laser galvanometer assembly; 10. Telescopic rod; 11. Refraction mirror; 12. U-shaped light-absorbing plate; 13. Arc-shaped reflective plate; 14. Connecting plate; 15. Outer casing. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figure 1-Figure 10An embodiment of the present invention is: a laser galvanometer offset correction device, comprising an outer protective shell 15, a Y-axis galvanometer motor 101 is arranged on one side of the outer protective shell 15, a 45-degree beam combiner 104 is arranged on the other side of the outer protective shell 15, an X-axis galvanometer motor 102 is arranged above the Y-axis galvanometer motor 101, a visual imaging component 103 is arranged above the outer protective shell 15, a field lens 105 is arranged below the outer protective shell 15, a cabinet 1 is arranged inside the outer protective shell 15, a U-shaped plate 2 is arranged on the left side of the cabinet 1, a fixed plate 21 is arranged on the right side of the cabinet 1, and a motor is arranged at the bottom edge of the fixed plate 21, a workbench 22 is arranged on the left side of the top of the cabinet 1, a welding assembly 3 is arranged on the top of the inner wall of the U-shaped plate 2, and the welding assembly 3 is laser welded, a reciprocating screw rod 6 is rotatably installed at the top edge of the fixed plate 21, a mounting plate 7 is penetrated and slidably installed on the outer wall of the reciprocating screw rod 6, a limit rod 8 is penetrated and slidably installed at the inner edge of the mounting plate 7, and a laser galvanometer is arranged inside the mounting plate 7 Mirror assembly 9, a telescopic rod 10 is fixedly installed at the bottom of the inner wall of the square groove on the right side of the top of the cabinet 1, and a motor is arranged inside the telescopic end of the telescopic rod 10, and a refracting mirror 11 is fixedly installed on the top of the motor output end inside the telescopic end of the telescopic rod 10, and a U-shaped light absorbing plate 12 is fixedly installed on the front and back of the mounting plate 7, and an arc-shaped reflective plate 13 is fixedly installed on the left inner wall of the U-shaped light absorbing plate 12, and a connecting plate 14 is fixedly installed on the front of the inner wall of the U-shaped light absorbing plate 12. Through the above cooperation, the orientation of the laser galvanometer assembly 9 can be corrected by adjusting the mounting plate 7, which can distinguish the laser galvanometer assembly 9 from shaking due to manual adjustment, and avoid the displacement of the optical elements inside the laser galvanometer assembly 9; through the above cooperation, the arc-shaped reflective plate 13, the refracting mirror 11 and the laser galvanometer assembly 9 are always in the same plane to avoid polarization, and the refracting mirror 11 can ensure the focusing of the refracted light beam without direction change when rotating at a constant speed, thereby reducing the use cost and ensuring good workpiece processing accuracy.

[0031] The bottom of the limiting rod 8 is fixedly installed at the top edge of the fixing plate 21. There are two U-shaped light absorbing plates 12, and the U-shaped light absorbing plates 12 are symmetrically distributed with the cabinet 1. A plurality of ventilation holes are opened on the surface of the U-shaped light absorbing plate 12. The arc-shaped reflective plate 13 is slidably installed on the arc surface on the left side of the inner wall of the U-shaped plate 2. One end of the back of the connecting plate 14 is fixedly installed on the outer wall surface of the telescopic end of the telescopic rod 10. The bottom of the mounting plate 7 is provided with an expelling device 4 for absorbing fog around the laser galvanometer assembly 9 when the laser galvanometer assembly 9 is corrected in orientation.

[0032] When in use, place the material on the top of the workbench 22, the U-shaped plate 2 limits the welding assembly 3, and the welding assembly 3 performs laser welding on the material; when the orientation of the laser galvanometer assembly 9 needs to be corrected, start the motor, and the output end of the motor drives the reciprocating screw 6 to rotate. When the reciprocating screw 6 rotates, it is limited by its own spiral groove and the internal block of the mounting plate 7, and the limiting rod 8 limits the mounting plate 7. Therefore, when the reciprocating screw 6 rotates, the mounting plate 7 can slide up and down along the outer wall of the reciprocating screw 6, and the mounting plate 7 drives the laser galvanometer assembly 9 to move synchronously. The above cooperation realizes the correction of the orientation of the laser galvanometer assembly 9 by adjusting the mounting plate 7, which is different from manual adjustment of the laser galvanometer assembly 9 causing it to shake, avoiding the internal optical elements of the laser galvanometer assembly 9 The U-shaped light absorbing plate 12 is pulled by the mounting plate 7 to slide up and down along the inner wall of the U-shaped plate 2, and the U-shaped light absorbing plate 12 pulls the arc-shaped reflective plate 13 to slide up and down along the inner wall of the U-shaped plate 2. At the same time, the U-shaped light absorbing plate 12 pulls the telescopic end of the telescopic rod 10 to retract up and down through the connecting plate 14. At this time, the folding mirror 11 starts to rotate through the output end of the motor inside the telescopic end of the telescopic rod 10 to refract the scanning light beam of the laser galvanometer assembly 9, and reflects it through the arc-shaped reflective plate 13. Through the above coordination, the arc-shaped reflective plate 13, the folding mirror 11 and the laser galvanometer assembly 9 are always in the same plane to avoid polarization. When the folding mirror 11 rotates at a constant speed, the refracted light beam is focused and there is no change in direction. This reduces the cost of use and ensures good workpiece processing accuracy.

[0033] See also Figure 1-Figure 10 , based on the above embodiment, another embodiment of the present invention further includes an expelling device 4;

[0034] The expelling device 4 includes two vertical plates 41, a rotating wheel 42, a hollow rod 43 and a rotating plate 44. The tops of the two vertical plates 41 are fixedly installed on the bottom of the mounting plate 7. The rotating wheel 42 is rotatably installed on the inner wall of the vertical plate 41 away from the center of the mounting plate 7, and the right side of the outer wall of the cabinet 1 is located on the movement trajectory of the outer wall of the rotating wheel 42. The front and back sides of the hollow rod 43 are fixedly installed on the inner wall of the rotating wheel 42. The front and back sides of the rotating plate 44 are slidably installed on the surface of the rotating wheel 42 close to the center of the mounting plate 7 through springs. Through the above cooperation, the water mist generated by the temperature difference change caused by the heating of the equipment around the mounting plate 7 can be expelled and absorbed, so as to avoid the water mist eroding the laser galvanometer assembly 9 and causing the mirror surface to be atomized and dripping, thereby preventing the laser scanning accuracy from being reduced.

[0035] The expelling device 4 also includes an arc groove rod 45, a connecting column 46 and an arc surface ring 47. The arc groove rod 45 is fixedly installed on the front and back sides of the hollow rod 43, and the left end of the connecting column 46 is slidably installed in the arc groove of the arc groove rod 45. The right side of the inner wall of the arc surface ring 47 is fixedly installed on the right side of the connecting column 46, and the outer wall of the arc surface ring 47 is slidably connected to the inner wall of the hollow rod 43.

[0036] The expelling device 4 also includes a trapezoidal block 48 and a drying plate 49. The bottom of the trapezoidal block 48 passes through and is slidably installed inside the rotating plate 44. The inclined surface of the trapezoidal block 48 passes through the outer wall of the hollow rod 43, and the inclined surface of the trapezoidal block 48 is located on the arc motion trajectory of the arc ring 47. The bottom of the drying plate 49 is fixedly installed on the top of the trapezoidal block 48, and the left side of the trapezoidal block 48 is slidably installed on the left side of the inner wall of the rotating plate 44 through a spring. A circulation device 5 is arranged around the U-shaped light absorbing plate 12 to ensure that the air around the processing equipment circulates and the temperature is constant. In summary, the rotation absorption range of the rotating plate 44 is expanded, and the drying plate 49 slides back and forth in friction inside the rotating plate 44 to frictionally dry the water mist absorbed by the rotating plate 44, thereby ensuring the overall dryness of the rotating plate 44 for a long time and preventing the water mist from evaporating too slowly and reducing the absorption efficiency of subsequent water mist.

[0037] When in use, the mounting plate 7 moves downward and drives the vertical plate 41 to move synchronously, and the vertical plate 41 drives the rotating wheel 42 to move synchronously. When the outer wall of the rotating wheel 42 contacts the outer wall of the cabinet 1, friction is generated and the rotating wheel 42 starts to rotate. When the rotating wheel 42 rotates, it drives the hollow rod 43 to rotate, and when the hollow rod 43 rotates, it drives the rotating plate 44 to rotate. Through the above cooperation, the water mist generated by the temperature difference change caused by the heating of the equipment around the mounting plate 7 can be expelled and absorbed, and the water mist is prevented from adhering to the outer wall of the mounting plate 7 and gradually increasing the humidity inside the mounting plate 7, causing the water mist to erode the laser galvanometer assembly 9 and causing its mirror surface to be atomized and dripping, thereby preventing the laser scanning accuracy from being reduced; at the same time, when the hollow rod 43 rotates, it drives the arc groove rod 45 to rotate, and when the arc groove rod 45 rotates, the arc groove restricts the connecting column 46 through its own arc groove, so that the connecting column 46 can be in the arc groove rod The arc groove 45 slides back and forth inside, and the connecting column 46 drives the arc surface ring 47 to slide synchronously. When the arc surface ring 47 slides, it contacts the inclined surface of the trapezoidal block 48 to induce a resistance force. The trapezoidal block 48 moves upward through the resistance force and pushes the drying plate 49 to move synchronously. When the drying plate 49 continues to slide and contacts the top of the inner wall of the rotating plate 44, the continuous force of the arc surface ring 47 causes the top of the drying plate 49 to slide synchronously along the inner wall of the rotating wheel 42. When the arc surface ring 47 is reset, the rotating plate 44 and the drying plate 49 are reset by the spring force, and this is repeated repeatedly. In summary, the rotation absorption range of the rotating plate 44 is expanded, and the drying plate 49 slides back and forth frictionally inside the rotating plate 44, and the water mist absorbed by the rotating plate 44 is frictionally dried to ensure the overall dryness of the rotating plate 44 for a long time, and to avoid the water mist evaporating too slowly and reducing the absorption efficiency of the subsequent water mist.

[0038] See also Figure 1-Figure 10 , based on the above embodiment, another embodiment of the present invention further includes a circulation device 5;

[0039] The circulation device 5 includes a baffle plate 51, a protrusion 52, a transmission plate 53 and a semi-arc block 54. The bottom of the baffle plate 51 is hinged at the top edge of the cabinet 1 through a torsion spring. The protrusion 52 is fixedly installed on the vertical surface of the baffle plate 51 away from the center of the cabinet 1 on the side away from the center of the cabinet 1. The transmission plate 53 is fixedly installed on the inner wall of the U-shaped light absorbing plate 12 on the side away from the telescopic rod 10. The semi-arc block 54 is fixedly installed on the vertical surface of the inner wall of the transmission plate 53, and the arc surface of the protrusion 52 is located on the movement trajectory of the semi-arc block 54. When the scanning starts, the baffle plate 51 blocks the ventilation holes of the U-shaped light absorbing plate 12 to prevent light leakage. Through the above cooperation, the air circulation inside the U-shaped light absorbing plate 12 is ensured, while effectively preventing ambient light from interfering with the laser scanning process of the laser galvanometer assembly 9.

[0040] The circulation device 5 also includes a horizontal plate 55 and a vertical rod 56. The horizontal plate 55 is fixedly installed on the outer wall of the cabinet 1 near the telescopic rod 10. The bottom of the vertical rod 56 is rotatably installed on the top of the horizontal plate 55, and a spiral groove is opened near the top of the vertical rod 56.

[0041] The circulation device 5 also includes an L-shaped rod 57, a sliding ring 58 and a spiral sheet 59. The bottom of the L-shaped rod 57 is fixedly installed on the top of the U-shaped light-absorbing plate 12. The inner wall of the sliding ring 58 is sleeved and slidably installed on the outer wall of the spiral groove of the vertical rod 56. The outer wall of the sliding ring 58 is fixedly installed on the front of the top of the L-shaped rod 57, and the inner wall of the spiral sheet 59 is fixedly installed on the smooth surface of the outer wall of the vertical rod 56. Through the above cooperation, the external airflow can quickly enter or discharge the processing area when the laser galvanometer assembly 9 is calibrated, avoiding oxygen accumulation and preventing dust from floating and affecting the propagation and correction of the light beam.

[0042] When in use, the U-shaped light absorbing plate 12 drives the transmission plate 53 to move synchronously when it moves up and down, and the transmission plate 53 drives the semi-arc block 54 to move up and down. When the semi-arc block 54 moves up and down, the arc surface contacts the arc surface of the protrusion 52 to generate a resistance force, prompting the shielding plate 51 to cover the ventilation holes of the U-shaped light absorbing plate 12, thereby providing a darker scanning environment for the laser galvanometer assembly 9. At the same time, when the semi-arc block 54 passes the protrusion 52, the shielding plate 51 is reset by the torsion spring. Therefore, during the correction process of the laser galvanometer assembly 9, the shielding plate 51 will swing back and forth through the resistance force between the protrusion 52 and the semi-arc block 54. When the scanning starts, the shielding plate 51 blocks the ventilation holes of the U-shaped light absorbing plate 12 to prevent light leakage. Through the above cooperation, the air circulation inside the U-shaped light absorbing plate 12 is ensured, while effectively preventing ambient light from interfering with the laser galvanometer assembly 9. Light scanning process: The U-shaped light-absorbing plate 12 drives the L-shaped rod 57 to move up and down, and the L-shaped rod 57 drives the sliding ring 58 to slide back and forth along the spiral groove on the outer wall of the vertical rod 56. Through the limitation of the non-self-locking spiral groove on the outer wall of the vertical rod 56 and the contact between the built-in block of the sliding ring 58 and the inner wall of the spiral groove, the vertical rod 56 generates a rotational force and starts to rotate relying on the top of the horizontal plate 55. When the vertical rod 56 rotates, it drives the spiral piece 59 to rotate. Multiple spiral pieces 59 rotate at the adjacent ventilation holes of the U-shaped light-absorbing plate 12 to disturb the airflow, and rotate to intercept the dust carried in the airflow entering the U-shaped light-absorbing plate 12. Through the above cooperation, the external airflow can quickly enter or discharge the processing area when the laser galvanometer assembly 9 is calibrated, avoiding oxygen accumulation and preventing dust from floating and affecting the propagation and correction of the light beam.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser galvanometer offset correction device, comprising an outer protective shell (15), a Y-axis galvanometer motor (101) is arranged on one side of the outer protective shell (15), a 45-degree beam combiner (104) is arranged on the other side of the outer protective shell (15), an X-axis galvanometer motor (102) is arranged above the Y-axis galvanometer motor (101), a visual imaging component (103) is arranged above the outer protective shell (15), a field mirror (105) is arranged below the outer protective shell (15), a cabinet (1) is arranged inside the outer protective shell (15), a U-shaped plate (2) is arranged on the left side of the cabinet (1), a fixing plate (21) is arranged on the right side of the cabinet (1), and a motor is arranged at the bottom edge of the fixing plate (21), a workbench (22) is arranged on the left side of the top of the cabinet (1), a welding component (3) is arranged on the top of the inner wall of the U-shaped plate (2), and the welding component (3) is laser welded, characterized in that: A reciprocating screw (6) is rotatably mounted at the top edge of the fixed plate (21); a mounting plate (7) is penetrated and slidably mounted on the outer wall of the reciprocating screw (6); a limit rod (8) is penetrated and slidably mounted on the inner edge of the mounting plate (7); a laser galvanometer assembly (9) is arranged inside the mounting plate (7); a telescopic rod (10) is fixedly mounted at the bottom of the inner wall of the right square groove at the top of the cabinet (1); a motor is arranged inside the telescopic end of the telescopic rod (10); a refracting mirror (11) is fixedly mounted at the top of the motor output end inside the telescopic end of the telescopic rod (10); a U-shaped light absorbing plate (12) is fixedly mounted on the front and back of the mounting plate (7); an arc-shaped reflective plate (13) is fixedly mounted on the left inner wall of the U-shaped light absorbing plate (12); and a connecting plate (14) is fixedly mounted on the front of the inner wall of the U-shaped light absorbing plate (12); The bottom of the limit rod (8) is fixedly mounted on the top edge of the fixed plate (21); there are two U-shaped light absorbing plates (12), and the U-shaped light absorbing plates (12) are symmetrically distributed with the cabinet (1); a plurality of ventilation holes are provided on the surface of the U-shaped light absorbing plates (12); the arc-shaped reflective plate (13) is slidably mounted on the left side of the inner wall of the U-shaped plate (2); one end of the back of the connecting plate (14) is fixedly mounted on the outer wall surface of the telescopic end of the telescopic rod (10); and a repelling device (4) for absorbing fog around the laser galvanometer assembly (9) when the laser galvanometer assembly (9) is corrected is provided at the bottom of the mounting plate (7).

2. The laser galvanometer offset correction device according to claim 1, characterized in that: The expelling device (4) comprises two vertical plates (41), a rotating wheel (42), a hollow rod (43) and a rotating plate (44), the tops of the two vertical plates (41) are fixedly mounted on the bottom of the mounting plate (7), the rotating wheel (42) is rotatably mounted on the inner wall of the vertical plates (41) away from the center of the mounting plate (7), and the right side of the outer wall of the cabinet (1) is located on the movement track of the outer wall of the rotating wheel (42), the front and back sides of the hollow rod (43) are fixedly mounted on the inner wall of the rotating wheel (42), and the front and back sides of the rotating plate (44) are slidably mounted on the surface of the rotating wheel (42) close to the center of the mounting plate (7) through springs.

3. The laser galvanometer offset correction device according to claim 2, characterized in that: The expelling device (4) further comprises an arc groove rod (45), a connecting column (46) and an arc surface ring (47), wherein the front and back sides of the arc groove rod (45) are fixedly mounted inside the hollow rod (43), the left end of the connecting column (46) is slidably mounted inside the arc groove of the arc groove rod (45), the right side of the inner wall of the arc surface ring (47) is fixedly mounted on the right side of the connecting column (46), and the outer wall of the arc surface ring (47) is slidably connected to the inner wall of the hollow rod (43).

4. The laser galvanometer offset correction device according to claim 3, characterized in that: The expelling device (4) further comprises a trapezoidal block (48) and a drying plate (49); the bottom of the trapezoidal block (48) penetrates through and is slidably mounted inside the rotating plate (44); the inclined surface of the trapezoidal block (48) penetrates through the outer wall of the hollow rod (43), and the inclined surface of the trapezoidal block (48) is located on the arc surface motion trajectory of the arc surface ring (47); the bottom of the drying plate (49) is fixedly mounted on the top of the trapezoidal block (48), and the left side of the trapezoidal block (48) is slidably mounted on the left side of the inner wall of the rotating plate (44) via a spring; and a circulation device (5) for ensuring that air around the processing equipment circulates and maintains a constant temperature is arranged around the U-shaped light absorbing plate (12).

5. The laser galvanometer offset correction device according to claim 4, characterized in that: The circulation device (5) comprises a baffle plate (51), a protrusion (52), a transmission plate (53) and a semi-arc block (54); the bottom of the baffle plate (51) is hinged to the top edge of the cabinet (1) via a torsion spring; the side of the protrusion (52) away from the center of the cabinet (1) is fixedly mounted on the vertical surface of the baffle plate (51) away from the center of the cabinet (1); the side of the transmission plate (53) away from the telescopic rod (10) is fixedly mounted on the inner wall of the U-shaped light absorbing plate (12); the semi-arc block (54) is fixedly mounted on the inner wall vertical surface of the transmission plate (53) in a flat surface, and the arc surface of the protrusion (52) is located on the movement trajectory of the semi-arc block (54).

6. The laser galvanometer offset correction device according to claim 5, characterized in that: The circulation device (5) further comprises a horizontal plate (55) and a vertical rod (56); the horizontal plate (55) is fixedly mounted on the outer wall of the cabinet (1) near the telescopic rod (10); the bottom of the vertical rod (56) is rotatably mounted on the top of the horizontal plate (55); and a spiral groove is formed on a section of the vertical rod (56) near the top.

7. The laser galvanometer offset correction device according to claim 6, characterized in that: The circulation device (5) further comprises an L-shaped rod (57), a sliding ring (58) and a spiral sheet (59); the bottom of the L-shaped rod (57) is fixedly mounted on the top of the U-shaped light absorbing plate (12); the inner wall of the sliding ring (58) is sleeved and slidably mounted on the outer wall of the spiral groove of the vertical rod (56); the outer wall of the sliding ring (58) is fixedly mounted on the front side of the top of the L-shaped rod (57); and the inner wall of the spiral sheet (59) is fixedly mounted on the smooth surface of the outer wall of the vertical rod (56).

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