Auxiliary focus laser marking machine

Abstract

The invention discloses an auxiliary focus type laser marking machine, comprising an operating table, a slide rail is arranged on the operating table, an adjustment column is fixedly installed on the top of the operating table, a support plate is installed on the adjustment column, a laser is arranged on the top of the support plate, a beam expander is fixedly arranged on the laser, one end of the beam expander away from the laser is rotatably connected to a galvanometer box, a field mirror is installed at the bottom of the galvanometer box, a rotating sleeve is sleeved on the beam expander, one end of the rotating sleeve is fixedly connected to the galvanometer box, a gear is fixedly arranged on the outer periphery of the rotating sleeve close to the laser, a worm motor is arranged at the end of the laser, and a worm meshing gear is arranged at the output end of the worm motor; a shell is arranged on the outer periphery of the galvanometer box, a rotating shaft is fixedly arranged on the outer side of the shell, support frames are arranged on both sides of the rotating shaft, a ring body is sleeved on the rotating shaft, horizontal shafts are symmetrically fixedly arranged on both sides of the ring body, the horizontal shaft is hinged to the support frame, and a lifting assembly is arranged on the other end of the laser; a foot rod is arranged to drive the floating plate to contact with the conductive contact of the pole plate, so as to connect the circuit, control the rotation of the galvanometer box, and adjust the horizontality.

Description

Technical Field

[0001] The invention relates to the technical field of marking equipment, and in particular to an auxiliary focusing type laser marking machine. Background Art

[0002] There is a slight gap between the optical path system of the laser marking machine and the level of the workpiece to be marked, which will cause the marking depth of the workpiece to be inconsistent, and the marking effect will be significantly different, causing the marked workpiece to become defective or scrapped. Therefore, there is a slight gap between the optical path system of the laser marking machine and the level of the workpiece to be marked, which has an extremely bad impact on the entire marking.

[0003] Chinese patent document CN218016420U discloses a laser marking machine with an adjustment function, including a laser marking platform and a laser marking head. A marking placement frame is installed on the top side of the laser marking platform through a telescopic component. A bracket is fixedly installed on the top side of the laser marking platform. A horizontal adjustment hole is opened on one side of the bracket. The laser marking machine with an adjustment function places the device on the marking placement frame, and performs horizontal adjustment according to the horizontal direction. Through the setting of the horizontal adjustment positioning component, the hand-held slot is held and pulled upward, and then moved after pulling, which can drive the hand-held block to move. The movement of the hand-held block drives the adjustment block to move in the horizontal adjustment hole, and horizontal direction adjustment can be performed. Then, the rotating adjustment disk is rotated to drive the laser marking head to perform rotation adjustment. After the laser marking head is rotated and adjusted, the position is adjusted and fixed through the rotating positioning component, thereby realizing the position adjustment of the laser marking, and the adjustment is relatively convenient.

[0004] In the prior art, the adjustment of the level of the optical path system requires manual hand-pulling, which requires multiple manual operations, is time-consuming and labor-intensive, and the accuracy is difficult to grasp. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an auxiliary focus laser marking machine, which provides a foot rod between the operating table and the galvanometer box. The foot rod drives the floating plate to contact the conductive contacts of the electrode plate, thereby connecting the circuit and controlling the rotation of the galvanometer box to achieve automatic leveling in the front, back, left and right directions.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] An auxiliary focus laser marking machine includes an operating table, a slide rail is arranged on the operating table, an adjustment column is fixedly installed on the top of the operating table, a support plate is installed on the adjustment column, a laser is arranged on the top of the support plate, a beam expander is fixedly arranged at one end of the laser, a beam expander is rotatably connected to a galvanometer box at one end away from the laser, and a field mirror is installed at the bottom of the galvanometer box.

[0008] A rotating sleeve is sleeved on the beam expander tube, one end of the rotating sleeve is fixedly connected to the galvanometer box, a gear is fixedly arranged on the outer periphery of the rotating sleeve close to the laser, a worm motor is installed on the end of the laser close to the gear, the output end of the worm motor is connected to the worm, and the worm meshes with the gear to rotate; a shell is provided on the outer periphery of the galvanometer box, a rotating shaft is fixedly arranged on the outer side of the shell away from the beam expander tube, both sides of the support plate extend in the direction of the rotating shaft and symmetrically form an L-shaped support frame, a ring body is sleeved on the rotating shaft, and transverse axes are symmetrically fixed on both sides of the ring body, the end of the transverse axis away from the ring body is hinged to the L-shaped support frames on both sides, and a lifting assembly is installed on the side of the laser away from the beam expander tube;

[0009] The lifting assembly includes a tail plate fixedly mounted on the end of the laser, the tail plate is elastically connected to the support plate by a tension spring, an electric cylinder is fixedly mounted on the bottom of the support plate adjacent to the tail plate, a telescopic rod of the electric cylinder penetrates the support plate upward, and a free end of the telescopic rod abuts against the tail plate;

[0010] A trigger assembly is provided outside the galvanometer box, and the trigger assembly is electrically connected to the worm motor and the electric cylinder;

[0011] As a preferred technical solution of the present invention, the trigger assembly includes a first pole plate, a second pole plate and a floating plate, a cavity is formed between the shell and the galvanometer box, the galvanometer box is fixedly connected to the inner wall of the shell near the beam expander, the bottom of the shell is open, and the top cavity of the galvanometer box is symmetrically provided with two groups of sprocket assemblies, and the top of the peripheral cavity of the galvanometer box is fixedly provided with a first pole plate and a second pole plate from top to bottom, the first pole plate and the second pole plate are both symmetrical U-shaped structures, and arc sections are used at the vertical and horizontal connections, and a floating plate is connected between the first pole plate and the second pole plate by a spring, and the floating plate is intermittently arranged; a second slide groove is opened on the floating plate, and two foot rods are symmetrically arranged in the second slide groove, one end of the foot rod is slidably installed in the second slide groove, and the other end of the foot rod is slidably installed in the slide rail, and a guide sleeve is slidably sleeved on the foot rod, and the outer side of the guide sleeve is connected to the chain of the sprocket assembly through a cross bar, and when the galvanometer box is tilted, the floating plate contacts the first pole plate or the second pole plate;

[0012] As a preferred technical solution of the present invention, the foot rod comprises a first rod body and a second rod body, a connecting sleeve is fixedly arranged at the bottom end of the first rod body, an external thread is provided at the other end of the connecting sleeve and notches are arranged at intervals, and the connecting sleeve is fastened to the top of the second rod body by a conical nut; a landing plate is arranged at the top end of the first rod body, and a bottom contact plate is arranged at the bottom end of the second rod body;

[0013] As a preferred technical solution of the present invention, the floating plate includes a first floating plate, a second floating plate and a third floating plate, the first floating plate is located at one end away from the beam expander, and the first floating plate is perpendicular to the axial direction of the beam expander, the second floating plate and the third floating plate are respectively located on both sides of the first floating plate and are symmetrically arranged; the ends of the first floating plate, the second floating plate and the third floating plate are elastically connected to the first electrode plate and the second electrode plate through springs; the first floating plate, the second floating plate and the third floating plate are all provided with T-shaped grooves in the same plane, three sections of T-shaped grooves form a second slide groove, and a landing plate is slidably installed in the second slide groove; the landing plate is slidably installed in the second slide groove, and a bottom contact plate is provided at the bottom end of the second rod body, and the bottom contact plate is slidably installed in the first slide groove;

[0014] As a preferred technical solution of the present invention, a limiting groove is provided on the second electrode plate, and an arc groove is provided on the arc segment at the longitudinal and transverse connection of the second electrode plate, and the limiting groove and the arc groove are connected to form a loop; the first rod body of the foot rod slides in the loop;

[0015] As a preferred technical solution of the present invention, the sprocket assembly includes a sprocket motor, a chain at the top of the galvanometer box, a sprocket and an auxiliary sprocket, the sprocket motor is fixedly installed on the top of the shell, the output end of the sprocket motor is connected to the sprocket shaft, the sprocket shaft extends into the shell and the sprocket is fixedly installed, the other end of the sprocket shaft is installed on the top of the galvanometer box through a bearing seat, the sprocket is surrounded by two auxiliary sprockets and the chain is arranged close to the floating plate;

[0016] As a preferred technical solution of the present invention, the T-slot openings at the ends of the first floating plate, the second floating plate and the third floating plate are all provided with outwardly expanded bell mouths;

[0017] As a preferred technical solution of the present invention, the upper and lower surfaces of the first floating plate, the second floating plate and the third floating plate near the end are all provided with conductive contacts, and corresponding to the conductive contacts on the floating plates, matching conductive contacts are provided on the lower end surface of the first electrode plate and the upper end surface of the second electrode plate;

[0018] When the galvanometer box tilts relative to the operating table in the direction of the first floating plate, the two foot rods move in the opposite direction, connecting the conductive contact of the first floating plate with the conductive contact matched with the electrode plate, so that the worm motor is powered on and rotates, driving the galvanometer box to rotate in the direction opposite to the tilt in the direction of the first floating plate. When adjusted to be parallel, the first floating plate is parallel to the electrode plate, the conductive contact is disconnected, and the worm motor stops.

[0019] When the galvanometer box tilts relative to the operating table in a direction perpendicular to the first floating plate, the two foot rods move along the floating plate, connecting the conductive contacts on the floating plate with the conductive contacts on the electrode plate, so that the electric cylinder is energized to extend and retract, driving the galvanometer box to rotate in the direction perpendicular to the first floating plate in the opposite direction of the tilt. When adjusted to be parallel, the floating plate is parallel to the electrode plate, the conductive contacts are disconnected, and the electric cylinder stops.

[0020] As a preferred technical solution of the present invention, a guide groove is provided on the operating table, the guide groove is deepened downward and the deepened part extends to both sides and converges into a T shape to form a first slide groove, and a contact bottom plate is slidably installed in the first slide groove;

[0021] As a preferred technical solution of the present invention, a first rod inlet is provided on the slide rail; and a second rod inlet is provided on the second pole plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention arranges a worm and a gear to mesh and rotate to adjust the front and rear level of the galvanometer box, and arranges an electric cylinder and a tension spring to cooperate to adjust the left and right level of the galvanometer box; a foot rod is arranged between the galvanometer box and the operating table, and the rotation of the chain is controlled by a sprocket motor to drive the two foot rods to move in the slide rail, and the lifting plates at the top ends of the two symmetrically arranged foot rods slide in the T-slot of the floating plate, and the bottom contact plates at the bottom ends of the two foot rods slide in the T-slot of the slide rail; when the galvanometer box tilts relative to the operating table, the conductive contact on the floating plate is connected to the conductive contact of the first electrode plate or the second electrode plate, the circuit is connected, and the screw motor or the electric cylinder is started to control and adjust the front and rear or left and right level of the galvanometer box. When the floating plate is adjusted to be parallel to the first and second pole plates, that is, the galvanometer box is parallel to the operating table, the conductive contacts of the floating plate are disconnected from the conductive contacts of the two pole plates, and the worm motor and the electric cylinder stop working; the chain rotates to drive the two foot rods to continue moving forward, and when the conductive contacts on the floating plate are connected to the conductive contacts of the first or second pole plates, the worm motor or the electric cylinder starts again to adjust the horizontal angle of the galvanometer box until the floating plate is parallel to the first and second pole plates, and the worm motor and the electric cylinder stop working. During the travel of the slide rail, multiple automatic adjustments can be achieved until the floating plate is parallel to the two pole plates, and the horizontal adjustment is completed.

[0024] In the present invention, the relative parallelism of the galvanometer box and the operating table is adjusted by the cooperation of the foot rod, the floating plate and the two pole plates, thereby ensuring the consistency of the marking depth of the marked workpiece and improving the marking quality; the horizontal angle of the galvanometer box can be automatically adjusted multiple times, and horizontal adjustment can be performed in multiple directions such as front, back, left and right, thereby ensuring the accuracy of the adjustment, saving time and labor, and ensuring high work efficiency.

[0025] 2. In the present invention, the bottom ends of the two foot rods are slidably installed in the slide rails of the operating table, and the top ends are slidably installed in the floating plate. According to the difference in parallelism between the galvanometer box and the operating table, the foot rods cause the floating plate to shift up and down, connecting the upper and lower paired conductive contacts, so that the worm motor or electric cylinder is energized and started, driving the galvanometer box to rotate, and finally achieving leveling.

[0026] During the sliding process of the foot rod, the foot rod's contact bottom plate reflects the horizontal information of the operating table in the floating plate through the foot rod's lifting plate, and then leveling is performed; the length of the foot rod can be adjusted to adapt to the height adjustment under different focal lengths. The foot rod is detachable and can be disassembled after the level adjustment is completed, which saves space and does not affect the operation of laser marking. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front perspective schematic view of the laser marking machine installation structure of the present invention;

[0028] Figure 2 It is a schematic rear perspective view of the installation structure of the laser marking machine of the present invention;

[0029] Figure 3 It is a top perspective schematic view of the galvanometer box and the housing installation structure of the present invention;

[0030] Figure 4 A three-dimensional schematic view of the top mounting structure of the galvanometer box of the present invention;

[0031] Figure 5 A top perspective schematic view of a sprocket assembly on the top of a galvanometer box of the present invention;

[0032] Figure 6 It is a three-dimensional schematic view of the top of the galvanometer box and the foot rod installation structure of the present invention;

[0033] Figure 7 It is a three-dimensional schematic view of the floating plate and the pole plate mounting structure on the top of the galvanometer box of the present invention;

[0034] Figure 8 It is a three-dimensional schematic view of the cross-sectional structure of the floating plate and the pole plate part at the top of the galvanometer box of the present invention;

[0035] Fig. 9 It is a three-dimensional schematic view of the floating plate and the arc-shaped section structure of the pole plate at the top of the galvanometer box of the present invention;

[0036] Fig.10 The appended Fig. 9 A schematic three-dimensional view of the middle (AA) section;

[0037] Fig.11 It is a three-dimensional schematic diagram of the foot rod connection structure of the present invention;

[0038] Fig.12 It is a three-dimensional schematic diagram of the foot rod and the slide groove installation structure of the present invention;

[0039] Fig.13 It is a cross-sectional perspective schematic diagram of the foot bar and the slide groove installation structure of the present invention;

[0040] In the figure: 10, laser; 11, adjustment column; 12, galvanometer box; 13, field mirror; 14, beam expander; 15, operating table; 16, support plate; 17, sprocket motor; 18, gear; 19, worm; 20, worm motor; 21, support frame; 22, slide rail; 23, tail plate; 24, tension spring; 25, telescopic rod; 26, electric cylinder; 27, foot rod; 28, first rod inlet; 29, first slide groove; 30, bottom plate; 31, connecting sleeve; 32, conical nut; 33 , first pole plate; 34, second pole plate; 35, first floating plate; 36, second floating plate; 37, third floating plate; 38, shell; 39, second slide groove; 40, landing plate; 41, second rod inlet; 42, guide sleeve; 43, sprocket; 44, sprocket shaft; 45, chain; 46, ring; 47, rotating sleeve; 48, first rod body; 49, second rod body; 50, auxiliary sprocket; 51, spring; 52, ring body 52; 53, horizontal axis 53; 54, rotating shaft 54. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0042] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] Figure 1-Figure 13 As shown in the figure, an auxiliary focus type laser marking machine includes an operating table 15, on which a slide rail 22 is provided, an adjusting column 11 is fixedly installed on the top of the operating table 15, a supporting plate 16 is installed on the adjusting column 11, a laser 10 is provided on the top of the supporting plate 16, a beam expander 14 is fixedly provided at one end of the laser 10, and the beam expander 14 is rotatably connected to a galvanometer box 12 at one end away from the laser 10, and a field lens 13 is installed at the bottom of the galvanometer box 12; a threaded adjusting rod matching the supporting plate 16 is provided inside the adjusting column 11, which is used to adjust the up and down displacement of the supporting plate 16, the laser 10, the galvanometer box 12 and the shell 38 as a whole, so as to adjust the focal length of the laser marking machine.

[0044] A rotating sleeve 47 is sleeved on the beam expander 14, one end of the rotating sleeve 47 is fixedly connected to the galvanometer box 12, a gear 18 is fixedly arranged on the outer periphery of the rotating sleeve 47 near the laser 10, a worm motor 20 is installed at the end of the laser 10 close to the gear 18, the output end of the worm motor 20 is connected to the worm 19, and the worm 19 meshes with the gear 18 to rotate;

[0045] A shell 38 is provided on the periphery of the galvanometer box 12, and a rotating shaft 54 ​​is fixedly provided on the outer side of the shell 38 away from the beam expander 14. Both sides of the support plate 16 extend toward the rotating shaft 54 ​​and symmetrically form an L-shaped support frame 21. A ring body 52 is sleeved on the rotating shaft 54, and transverse axes 53 are symmetrically fixed on both sides of the ring body 52. ​​The ends of the transverse axes 53 away from the ring body 52 are hinged to the L-shaped support frames 21 on both sides. A lifting assembly is installed on the side of the laser 10 away from the beam expander 14; the rotating shaft 54 ​​is arranged to coincide with the center line of the rotating sleeve 47.

[0046] The rotating shaft 54 ​​on the galvanometer box 12 is rotatably arranged in the ring body 52, and the worm 19 meshes with the gear 18 to drive the rotating sleeve 47 and the galvanometer box 12 to rotate, thereby adjusting the horizontality in the front-to-back direction (refer to the front-to-back direction). Figure 1 ), wherein the worm motor 20 can rotate forward and reverse, and the worm 19 meshes with the gear 18 with a self-locking function to prevent non-operational activities;

[0047] The lifting assembly is used to adjust the horizontality of the galvanometer box 12 in the left and right directions (refer to Figure 1 ), the lifting assembly is further described in the following paragraphs.

[0048] When the lifting assembly moves up and down, the laser 10, the beam expander 14 and the galvanometer box 12 are driven to rotate around the horizontal axis 53 to adjust the horizontality. During the rotation, the ring body 52 supports the rotating shaft 54 ​​and limits the radial displacement. The horizontal distance between the horizontal axis 53 and the foot rod 27 is small, which is within a reasonable error range and does not affect the adjustment level.

[0049] A trigger assembly is provided on the outside of the galvanometer box 12, and the trigger assembly is electrically connected to the worm motor 20 and the electric cylinder 26. The trigger assembly includes a first pole plate 33, a second pole plate 34 and a floating plate; a shell 38 is provided on the periphery of the galvanometer box 12, and a cavity is formed between the shell 38 and the galvanometer box 12. The inner wall of the shell 38 near the beam expander 14 is fixedly connected to the galvanometer box 12, and the bottom of the shell 38 is open. Two groups of sprocket assemblies are symmetrically provided in the top cavity of the galvanometer box 12. The first pole plate 33 and the second pole plate 34 are fixedly provided on the top of the outer periphery of the galvanometer box 12 from top to bottom. The first pole plate 33 and the second pole plate 34 are both U-shaped structures that are symmetrical on the left and right, and the vertical and horizontal connections are both An arc segment is adopted, and a floating plate is connected between the first pole plate 33 and the second pole plate 34 through a spring, and the floating plate is intermittently arranged; a second slide groove 39 is opened on the floating plate, and two foot rods 27 are arranged in the second slide groove 39, one end of the foot rod 27 is slidably installed in the second slide groove 39, and the other end of the foot rod 27 is slidably installed in the slide rail 22, and a guide sleeve 42 is slidably sleeved on the foot rod 27, and the outer side of the guide sleeve 42 is connected to the chain of the sprocket assembly through a cross bar. When the galvanometer box 12 is tilted, the floating plate contacts the first pole plate 33 or the second pole plate 34.

[0050] Figure 1 As shown in the figure, a gear 18 is installed on a rotating sleeve 47 fixedly connected to the galvanometer box 12, and a worm motor 20 and a worm 19 are installed at the end of the laser 10. The worm 19 meshes with the gear 18. The worm motor 20 is adjusted to drive the worm 19, and the worm 19 meshes and rotates with the gear 18. The rotating sleeve 47 is driven by the gear 18 to rotate together with the galvanometer box 12 to achieve the horizontal adjustment of the galvanometer box 12 in the front and rear directions. A lifting component is installed at the other end of the laser 10, and the lifting component is adjusted to make the galvanometer box 12 rotate around the horizontal axis 53, thereby achieving the horizontal adjustment of the galvanometer box 12 in the left and right directions.

[0051] A first pole plate 33 and a second pole plate 34 are fixedly provided on the top of the cavity between the shell 38 and the galvanometer box 12 from top to bottom, and a floating plate is connected between the first pole plate 33 and the second pole plate 34 by a spring, and the floating plate is intermittently arranged; conductive contacts are correspondingly installed on the upper end surface of the floating plate and the lower end surface of the first pole plate 33, and conductive contacts are correspondingly installed on the lower end surface of the floating plate and the upper end surface of the second pole plate 34, and the conductive contacts are connected to the worm motor 20 or the electric cylinder 26 in the lifting assembly through wires; when the upper and lower conductive contacts are connected, the worm motor 20 or the electric cylinder 26 in the lifting assembly is controlled to move, realizing forward or reverse movement (the specific connection method is further described in the following paragraphs), thereby controlling the adjustment of the horizontal plane direction of the galvanometer box 12.

[0052] A second slide groove 39 is opened on the floating plate, and two foot rods 27 are arranged in the second slide groove 39. One end of the foot rod 27 is slidably installed in the second slide groove 39, and the other end of the foot rod 27 is slidably connected to the slide rail 22. A guide sleeve 42 is slidably sleeved on the foot rod 27, and the outer side of the guide sleeve 42 is connected to the chain of the sprocket assembly through a cross bar. The two ends of the cross bar are respectively fixedly connected to the guide sleeve 42 and the chain, and a rotatable connecting joint is provided in the middle of the cross bar. When the galvanometer box 12 tilts, the guide sleeve 42 turns with the foot rod 27, which is beneficial to the longitudinal sliding and lateral limiting of the internal foot rod 27 by the guide sleeve 42.

[0053] When the galvanometer box 12 tilts, the floating plate contacts the first pole plate 33 or the second pole plate 34. When the chain of the sprocket assembly rotates, the guide sleeve 42 fixedly connected to the chain moves with the chain, and the guide sleeve 42 drives the two foot rods 27 to move, and the two have symmetrical movement directions.

[0054] Furthermore, the lifting assembly includes a tail plate 23 fixedly mounted at the end of the laser 10, the tail plate 23 is elastically connected to the support plate 16 via a tension spring 24, an electric cylinder 26 is fixedly mounted at the bottom of the support plate 16 adjacent to the tail plate 23, a telescopic rod 25 of the electric cylinder 26 penetrates the support plate 16 upward, and the free end of the telescopic rod 25 abuts the tail plate 23. When the telescopic rod 25 extends to push the tail plate 23 upward, relative sliding occurs between the two, and the area of ​​the tail plate 23 is sufficient to cover the contact position of the telescopic rod 25 to ensure that it will not detach.

[0055] Figure 1 , Figure 2 As shown in the figure, the tension spring 24 connects the tail plate 23 and the support plate 16, the tail plate 23 is fixedly connected to the end of the laser 10, the tension spring 24 exerts a downward force on the tail plate 23, and the electric cylinder 26 drives the telescopic rod 25 to exert an upward force, and the two interact with each other in a balanced state. When the telescopic rod 25 is extended or shortened, the laser 10 is adjusted to rotate around the horizontal axis 53, so as to adjust the horizontal degree of the galvanometer box 12 in the left and right directions.

[0056] The worm motor 20 adopts a small-angle stepper motor, and the electric cylinder 26 adopts a low-speed configuration. The worm motor 20, the electric cylinder 26, the sprocket motor 17, the laser 10, the beam expander 14, and the field lens 13 can all be purchased commercially.

[0057] The laser 10 is a device for emitting laser light, the beam expander 14 is used to change the diameter and divergence angle of the laser beam, and the field lens 13 is used to focus the collimated laser beam on one point, increase the energy density of the laser beam, and use the high energy of the laser to mark the material, etc.; all of them are prior art and will not be described in detail. The worm motor 20, the electric cylinder 26, the sprocket motor 17, and the laser 10 are all connected to an external power source through wires.

[0058] Furthermore, the foot rod 27 includes a first rod body 48 and a second rod body 49, a connecting sleeve 31 is fixedly provided at the bottom end of the first rod body 48, an external thread is provided at the other end of the connecting sleeve 31 and notches are provided at intervals, and the connecting sleeve 31 is fastened to the top of the second rod body 49 by a conical nut 32; a landing plate 40 is provided at the top end of the first rod body 48, and the landing plate 40 slides in the floating plate; a bottom plate 30 is provided at the bottom end of the second rod body 49, and the bottom plate 30 slides in the slide rail 22.

[0059] Figure 8 , Fig.11 , Fig.12 and Fig.13 As shown in the figure, the connection between the first rod body 48 and the second rod body 49 is fastened by a connecting sleeve 31 and a conical nut 32. The connecting sleeve 31 accommodates the telescopic length of the second rod body 49 to achieve the adjustment of the length of the foot rod 27, which is suitable for the length adjustment of the initial installation between the galvanometer box 12 and the operating table 15. After the adjustment is completed, the second rod body 49 can be removed for laser marking ( Figure 1 ).

[0060] The top of the first rod 48 is provided with a landing plate 40, which slides in the floating plate; the bottom of the second rod 49 is provided with a bottom plate 30, which slides in the slide rail 22. The guide sleeve 42 is sleeved on the first rod 48. When the chain of the sprocket assembly drives the guide sleeve 42 to move with the chain, the guide sleeve 42 drives the first rod 48, so that the landing plate 40 on the first rod 48 slides in the floating plate, and the bottom plate 30 of the second rod 49 slides in the slide rail 22; during the displacement movement of the foot rod 27, the guide sleeve 42 can slide up and down outside the first rod 48.

[0061] Furthermore, the floating plate includes a first floating plate 35, a second floating plate 36 and a third floating plate 37. The first floating plate 35 is located at one end away from the beam expander 14, and the first floating plate 35 is perpendicular to the axial direction of the beam expander 14. The second floating plate 36 and the third floating plate 37 are respectively located on both sides of the first floating plate 35 and are symmetrically arranged. The ends of the first floating plate 35, the second floating plate 36 and the third floating plate 37 are elastically connected to the first electrode plate 33 and the second electrode plate 34 through springs. The first floating plate T-slots are provided in the same plane in the first floating plate 35, the second floating plate 36 and the third floating plate 37, and three sections of T-slots form a second slide groove 39, in which a lifting plate 40 of the foot rod 27 is slidably installed; the T-slot openings at the ends of the first floating plate 35, the second floating plate 36 and the third floating plate 37 are provided with outward-expanded trumpet mouths; the upper end surface of the floating plate and the lower end surface of the first electrode plate 33 are correspondingly installed with conductive contacts, and the lower end surface of the floating plate and the upper end surface of the second electrode plate 34 are correspondingly installed with conductive contacts.

[0062] Figure 4 , Figure 8 , Fig. 9 and Fig.10 As shown in the figure, conductive contacts are installed correspondingly on the upper end surface of the first floating plate 35 and the lower end surface of the first electrode plate 33. The conductive contacts are located near the two ends of the first floating plate 35. When the galvanometer box 12 tilts forward and backward, under the action of the two lifting plates 40, the first floating plate 35 and the first electrode plate 33 are no longer parallel. The conductive contacts at both ends can produce the maximum offset, contact and energize in time, and reduce errors.

[0063] In order to clearly express the relative position relationship, refer to Figure 1 and Figure 4 , it is agreed that the clockwise or counterclockwise direction is determined when looking from the laser 10 toward the housing 38; the side close to the adjustment column 11 is the front, and the opposite direction is the back. The housing 38 is on the left and the laser 10 is on the right.

[0064] Figure 1 and Figure 4 As shown in the figure, the conductive contact (not shown) includes a fixed block metal arranged on one end face, and also includes an elastic sheet metal arranged on the relative contact surface, and the metal is a conductive metal, preferably copper. Two sets of corresponding conductive contacts are respectively connected to the screw motor 20, or two sets of corresponding conductive contacts are respectively connected to the electric cylinder 26. The elastic sheet metal is located at the projection center position of the fixed block metal to ensure that when the two are in contact and energized, even if the horizontal relative position is misaligned, they are still in a state of mutual contact and connection, ensuring the normal operation of the worm motor 20 or the electric cylinder. The elastic sheet is arranged on the contact surface, which is conducive to controlling the distance with the other contact surface and reducing the error; when the two relative contact surfaces are in contact, the elastic sheet can be compressed without affecting the movement relationship between the moving parts (such as the lifting plate 40 sliding in the floating plate, and the bottom plate 30 sliding in the slide rail 22).

[0065] In the present invention, the upper and lower gaps of the lifting plate 40 in the floating plate, the upper and lower gaps of the contact plate 30 in the slide rail 22, and the contact gaps between the conductive contacts (elastic sheet metal and fixed block metal) are all within a reasonable error range and do not affect the accurate use of the laser marking machine.

[0066] The front and rear foot rods 27 are symmetrically arranged, and the foot rods 27 move in opposite or relative directions during the movement in the first floating plate 35 .

[0067] If the front and rear directions of the galvanometer box 12 are tilted relative to the operating table 15, two situations may occur: the front is lower and the rear is higher, or the front is higher and the rear is lower.

[0068] The first electrode plate 33 includes a front and rear section and two symmetrical left and right sections, and the second electrode plate 34 includes a front and rear section and two symmetrical left and right sections.

[0069] When the galvanometer box 12 is in a tilted state with the front lower and the back higher, the front and rear sections of the first pole plate 33 and the front and rear sections of the second pole plate 34 move with the galvanometer box 12, and the two foot rods 27 move forward and backward. The first floating plate 35 is affected by the lifting plate 40 and tends to be parallel to the operating table 15. In this process, the upper surface conductive contact at the front end of the first floating plate 35 is connected with the lower surface front conductive contact of the first pole plate 33, or the lower surface conductive contact at the rear end of the first floating plate 35 is connected with the upper surface conductive contact at the rear end of the second pole plate 34, and the circuit of the worm motor 20 is connected, the worm motor 20 is controlled to rotate, and finally the galvanometer box 12 is driven to rotate counterclockwise. The galvanometer box 12 rotates counterclockwise until the first floating plate 35 is parallel to the first pole plate 33 and the second pole plate 34, the connected conductive contacts are disconnected, and the worm motor 20 stops running.

[0070] When the galvanometer box 12 is in a tilted state with the front higher and the back lower, the front and rear sections of the first pole plate 33 and the front and rear sections of the second pole plate 34 move with the galvanometer box 12, and the two foot rods 27 move forward and backward. The first floating plate 35 is affected by the lifting plate 40 and tends to be parallel to the operating table 15. In this process, the conductive contact on the lower surface of the front end of the first floating plate 35 is connected with the conductive contact on the front end of the upper surface of the second pole plate 34, or the conductive contact on the upper surface of the rear end of the first floating plate 35 is connected with the conductive contact on the rear end of the lower surface of the first pole plate 33, connecting the circuit of the worm motor 20, controlling the worm motor 20 to rotate in the opposite direction, and finally driving the galvanometer box 12 to rotate clockwise. The galvanometer box 12 rotates clockwise until the first floating plate 35 is parallel to the first pole plate 33 and the second pole plate 34, the conductive contacts are disconnected, and the worm motor 20 stops running.

[0071] The rotating chain 45 drives the two foot rods to continue to run. During the travel of the slide rail 22, multiple automatic adjustments can be achieved until the floating plate is parallel to the two pole plates and the front and rear horizontal adjustment is completed.

[0072] Through the above adjustment method, the front and rear positions of the galvanometer box 12 are in a horizontal state.

[0073] During the process of adjusting the level of the laser marking machine, the front and rear levels are adjusted first, and then the left and right levels are adjusted; when the left and right levels are adjusted, the front and rear have been adjusted to a horizontal state. At this time, there may be two situations: the galvanometer box 12 is high on the left and low on the right, or low on the left and high on the right.

[0074] The second floating plate 36 and the third floating plate 37 are symmetrically arranged with respect to the first floating plate 35, and the two foot rods 27 slide symmetrically and in the same direction in the second floating plate 36 and the third floating plate 37. The two have similar principles, and the second floating plate 36 is now used as an example for explanation.

[0075] When the galvanometer box 12 is in a tilted state with the left side higher than the right side, the foot rod 27 runs from left to right inside the left and right sections of the second floating plate 36, and the foot rod 27 pushes the second floating plate 36 upward, so that the conductive contact at the upper surface end of the second floating plate 36 is connected with the conductive contact at the lower surface end of the first electrode plate 33, and the electric cylinder 26 is turned on, so that the telescopic rod 25 is extended to push up the tail plate 23, so that the right side of the galvanometer box 12 rotates upward around the horizontal axis 53 (see FIG. 2 ). Figure 1 ), so that the galvanometer box 12 is balanced left and right, when the foot rod moves in the slide rail 22, the electric cylinder 26 can be started multiple times to realize the rotation of the galvanometer box 12 around the horizontal axis 53, until the second floating plate 36 is parallel to the first pole plate 33 and the second pole plate 34, the electric cylinder 26 stops working, and the left and right horizontal adjustment is completed.

[0076] When the galvanometer box 12 is in a tilted state with the left side lower than the right side, the foot rod 27 moves from left to right inside the left and right sections of the second floating plate 36, and the foot rod 27 pulls the second floating plate 36 downward, so that the conductive contact at the end of the lower surface of the second floating plate 36 is connected with the conductive contact at the end of the upper surface of the second electrode plate 34, and the electric cylinder 26 is turned on to shorten the telescopic rod 25, pull down the tail plate 23, and cause the right side of the galvanometer box 12 to rotate downward around the horizontal axis 53 (see FIG. Figure 1 ), so that the galvanometer box 12 is balanced left and right, when the foot rod moves in the slide rail 22, the electric cylinder 26 can be started multiple times to realize the rotation of the galvanometer box 12 around the horizontal axis 53, until the second floating plate 36 is parallel to the first pole plate 33 and the second pole plate 34, the electric cylinder 26 stops working, and the left and right horizontal adjustment is completed.

[0077] The second floating plate 36 and the third floating plate 37 operate in the same manner and will not be described in detail herein.

[0078] Through the above adjustment method, the left and right positions of the galvanometer box 12 are in a horizontal state. Finally, the galvanometer box 12 is in a horizontal state in four directions of front, back, left, and right.

[0079] A limiting groove is provided on the second pole plate 34, and an arc groove is provided on the arc section at the longitudinal and transverse connection of the second pole plate 34, and the limiting groove is connected with the arc groove to form a ring channel 46; the first rod body 48 slides in the ring channel 46, and the ring channel 46 serves as a side limit for the first rod body 48, and the landing plate 40 on the top of the first rod body 48 slides in the T-slot of the floating plate.

[0080] When the landing plate 40 moves to the arc section, it enters and exits through the T-slots at the ends of the first floating plate 35, the second floating plate 36 and the third floating plate 37. The openings are all configured as outwardly flared trumpet mouths to compensate for the plane errors between the three floating plates so that the landing plate 40 can smoothly enter the T-slots.

[0081] Furthermore, the sprocket assembly includes a sprocket motor 17, a chain 45 at the top of the galvanometer box 12, a sprocket 43 and an auxiliary sprocket 50. The sprocket motor 17 is fixedly installed on the top of the shell 38. The output end of the sprocket motor 17 is connected to the sprocket shaft 44. The sprocket shaft 44 extends into the shell 38 and fixes the sprocket 43. The other end of the sprocket shaft 44 is installed on the top of the galvanometer box 12 through a bearing seat. The sprocket 43 is surrounded by the chain 45 through two auxiliary sprockets 50. The chain 45 is set close to the floating plate.

[0082] Figure 4-Figure 7 As shown in the figure, the outer side of the guide sleeve 42 is connected to the chain 45 of the sprocket assembly through a cross bar, and the two ends of the cross bar are fixedly connected to the guide sleeve 42 and the outer side of the chain 45 respectively. A rotatable connecting joint is provided in the middle of the cross bar. When the galvanometer box 12 is tilted, the guide sleeve 42 turns with the foot rod 27, which is beneficial to the longitudinal sliding of the guide sleeve 42 on the internal foot rod 27 and the lateral limitation.

[0083] A stopper is provided at the middle of the first floating plate 35, at one end of the second floating plate 36 close to the expansion tube 14, and at one end of the third floating plate 37 close to the expansion tube 14 to stop the operation of the sprocket motor 17 and ensure that the foot rod 27 operates within a normal range of travel.

[0084] Furthermore, a guide groove is provided on the operating table 15 , the guide groove is deepened downward and the deepened portion extends to both sides and converges into a T-shape, forming a first slide groove 29 , and a bottom contact plate 30 of the foot rod 27 is installed in the first slide groove 29 .

[0085] The bottom plate 30 and the landing plate 40 are both thick in the middle and thin at the edges, which is conducive to their sliding in the slide groove.

[0086] Fig.12 , Fig.13 As shown in the figure, the bottom contact plate 30 slides in the first slide groove 29, and the bottom contact plate 30 reflects the reference plane in this embodiment, and the relative horizontality of other planes is judged. A first rod inlet 28 is provided on the slide rail 22 for installing or removing the bottom of the foot rod 27. A second rod inlet 41 is provided on the second pole plate 34 for installing or removing the top of the foot rod 27.

[0087] Working principle:

[0088] First, adjust the adjustment column 11 to the corresponding focal length by lifting it, lock the support plate 16, loosen the conical nut 32, place the bottom contact plate 30 at the bottom of the second rod body 49 into the first rod inlet 28, slide it into the first slide groove 29, and screw the conical nut 32 to fix the connecting sleeve 31 and the second rod body 49;

[0089] Secondly, the sprocket motor 17 is started to drive the chain 45 to rotate. The chain 45 drives the foot rod 27 to move through the guide sleeve 42. The two foot rods 27 move in opposite directions in the first floating plate 35. During the operation, the two foot rods 27 keep the first floating plate 35 relatively parallel to the operating table 15. When the galvanometer box 12 tilts in the front-to-back direction, the front and rear sections of the first electrode plate 33 and the front and rear sections of the second electrode plate 34 tilt accordingly. The conductive contact on the first floating plate 35 is in contact with the conductive contact of the first electrode plate 33 or the second electrode plate 34. When the contacts are connected and the circuit is connected, the worm motor 20 is started to rotate, driving the worm 19 to engage the gear 18 to rotate, and adjusting the galvanometer box 12 to rotate left and right. When the first floating plate 35 and the first pole plate 33 and the second pole plate 34 are parallel to each other, the conductive contact is disconnected, and the worm motor 20 stops rotating. When the foot rod 27 slides in the slide rail 22, the worm motor 20 can be started multiple times to control the rotation of the galvanometer box 12 and automatically adjust the level until the first floating plate 35 is parallel to the two pole plates and the front and rear level adjustment is completed.

[0090] Again, the rotating chain 45 drives the two foot rods 27 to enter the second floating plate 36 and the third floating plate 37 respectively. When the galvanometer box 12 tilts left and right, the conductive contacts on the second floating plate 36 are connected with the conductive contacts of the left and right sections of the first electrode plate 33 or the left and right sections of the second electrode plate 34, or the conductive contacts on the third floating plate 37 are connected with the conductive contacts of the left and right sections of the first electrode plate 33 or the left and right sections of the second electrode plate 34; the circuit is connected to start the electric cylinder 26 to extend or shorten the telescopic rod 25, so that the galvanometer box 12 rotates around the horizontal axis 53. When the second floating plate 36 is parallel to the first electrode plate 33 and the second electrode plate 34, and the third floating plate 37 is parallel to the first electrode plate 33 and the second electrode plate 34, the conductive contacts are disconnected and the electric cylinder 26 stops working; when the foot rod 27 slides in the slide rail 22, the electric cylinder 26 can control the rotation of the galvanometer box 12 for multiple times to automatically adjust the level until the floating plate is parallel to the two electrodes and the front and rear level adjustment is completed.

[0091] The chain 45 rotates to drive the two foot rods to continue moving forward. During the travel of the slide rail 22, multiple automatic adjustments can be achieved until the second floating plate 36 and the third floating plate 37 are parallel to the two pole plates, and the left and right horizontal adjustment is completed.

[0092] The above is to complete the horizontal adjustment of the galvanometer box 12 in the four directions of front, back, left and right.

[0093] The present invention illustrates the technical concept of the present invention through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. An auxiliary focus laser marking machine, comprising an operating table (15), a slide rail (22) is provided on the operating table (15), an adjustment column (11) is fixedly installed on the top of the operating table (15), a support plate (16) is installed on the adjustment column (11), a laser (10) is provided on the top of the support plate (16), a beam expander (14) is fixedly installed at one end of the laser (10), a galvanometer box (12) is rotatably connected to the end of the beam expander (14) away from the laser (10), and a field mirror (13) is installed at the bottom of the galvanometer box (12), characterized in that: The beam expander tube (14) is sleeved with a rotating sleeve (47), one end of the rotating sleeve (47) is fixedly connected to the galvanometer box (12), a gear (18) is fixedly arranged on the outer periphery of the rotating sleeve (47) close to the laser (10), a worm motor (20) is installed at the end of the laser (10) close to the gear (18), the output end of the worm motor (20) is connected to the worm (19), and the worm (19) meshes with the gear (18) to rotate; the outer periphery of the galvanometer box (12) is provided with a shell (38), A rotating shaft (54) is fixedly arranged on the outer side of the shell (38) away from the beam expander (14); two sides of the support plate (16) extend in the direction of the rotating shaft (54) and symmetrically form an L-shaped support frame (21); a ring body (52) is sleeved on the rotating shaft (54); two sides of the ring body (52) are symmetrically fixed with transverse axes (53); ends of the transverse axes (53) away from the ring body (52) are hinged to the L-shaped support frames (21) on both sides; and a lifting assembly is installed on the side of the laser (10) away from the beam expander (14); The lifting assembly comprises a tail plate (23) fixedly mounted on the end of the laser (10); the tail plate (23) and the support plate (16) are elastically connected via a tension spring (24); an electric cylinder (26) is fixedly mounted on the bottom of the support plate (16) adjacent to the tail plate (23); a telescopic rod (25) of the electric cylinder (26) penetrates the support plate (16) upwards, and a free end of the telescopic rod (25) abuts against the tail plate (23); A trigger assembly is provided outside the galvanometer box (12), and the trigger assembly is electrically connected to the worm motor (20) and the electric cylinder (26); The trigger assembly comprises a first pole plate (33), a second pole plate (34) and a floating plate. A cavity is formed between the shell (38) and the galvanometer box (12). The inner wall of the shell (38) near the beam expander (14) is fixedly connected to the galvanometer box (12). The bottom of the shell (38) is open. Two groups of sprocket assemblies are symmetrically arranged in the top cavity of the galvanometer box (12). The top of the outer peripheral cavity of the galvanometer box (12) is fixedly provided with a first pole plate (33) and a second pole plate (34) from top to bottom. The first pole plate (33) and the second pole plate (34) are both symmetrical U-shaped structures. The longitudinal and transverse connections are both arc segments. The first pole plate ( A floating plate is connected between the first pole plate (33) and the second pole plate (34) via a spring, and the floating plate is intermittently arranged; a second slide groove (39) is provided on the floating plate, and two foot rods (27) are symmetrically arranged in the second slide groove (39), one end of the foot rod (27) is slidably installed in the second slide groove (39), and the other end of the foot rod (27) is slidably installed in the slide rail (22), and a guide sleeve (42) is slidably sleeved on the foot rod (27), and the outer side of the guide sleeve (42) is connected to the chain of the sprocket assembly via a cross bar, and when the galvanometer box (12) is tilted, the floating plate contacts the first pole plate (33) or the second pole plate (34); The floating plate comprises a first floating plate (35), a second floating plate (36) and a third floating plate (37); The upper and lower surfaces of the first floating plate (35), the second floating plate (36) and the third floating plate (37) close to the ends are provided with conductive contacts, and corresponding conductive contacts on the floating plates (35, 36, 37) are provided on the lower end surface of the first electrode plate (33) and the upper end surface of the second electrode plate (34); When the galvanometer box (12) tilts relative to the operating table (15) in the direction of the first floating plate (35), and the two foot rods (27) move in the opposite direction, the conductive contacts of the first floating plate (35) are connected to the conductive contacts matched with the pole plates (33, 34), so that the worm motor (20) is energized and rotates, driving the galvanometer box (12) to rotate in the direction of the first floating plate (35) in the opposite direction of the tilt. When the galvanometer box (12) is adjusted to be parallel, the first floating plate (35) is parallel to the pole plates (33, 34), the conductive contacts are disconnected, and the worm motor (20) stops. When the galvanometer box (12) tilts relative to the operating table (15) in a direction perpendicular to the first floating plate (35), the two foot rods (27) move in the direction of the floating plates (36, 37), and the conductive contacts on the floating plates (36, 37) are connected to the conductive contacts matched with the pole plates (33, 34), so that the electric cylinder (26) is energized to extend and retract, driving the galvanometer box (12) to rotate in a direction perpendicular to the first floating plate (35) in the opposite direction of the tilt. When the galvanometer box (12) is adjusted to be parallel, the floating plates (36, 37) are parallel to the pole plates (33, 34), the conductive contacts are disconnected, and the electric cylinder (26) stops.

2. The auxiliary focus type laser marking machine according to claim 1, characterized in that: The foot rod (27) comprises a first rod body (48) and a second rod body (49); a connecting sleeve (31) is fixedly arranged at the bottom end of the first rod body (48); an external thread is provided at the other end of the connecting sleeve (31) and notches are provided at intervals; the connecting sleeve (31) is fastened to the top of the second rod body (49) via a conical nut (32); a landing plate (40) is provided at the top end of the first rod body (48); the landing plate (40) is slidably mounted in the second slide groove (39); a bottom plate (30) is provided at the bottom end of the second rod body (49); the bottom plate (30) is slidably mounted in the first slide groove (29).

3. The auxiliary focus type laser marking machine according to claim 1, characterized in that: The first floating plate (35) is located at one end away from the beam expander (14), and the first floating plate (35) is perpendicular to the axial direction of the beam expander (14); the second floating plate (36) and the third floating plate (37) are respectively located on both sides of the first floating plate (35) and are symmetrically arranged; the ends of the first floating plate (35), the second floating plate (36) and the third floating plate (37) are elastically connected to the first pole plate (33) and the second pole plate (34) through springs; the first floating plate (35), the second floating plate (36) and the third floating plate (37) are all provided with T-shaped grooves in the same plane, and the three sections of the T-shaped grooves form a second slide groove (39), and a landing plate (40) is slidably installed in the second slide groove (39).

4. The auxiliary focus type laser marking machine according to claim 3, characterized in that: The second pole plate (34) is provided with a limit groove, and the arc-shaped section at the longitudinal and transverse connection of the second pole plate (34) is provided with an arc groove, the limit groove and the arc groove are connected to form a ring channel (46), and the first rod body (48) of the foot rod (27) slides in the ring channel (46).

5. The auxiliary focus type laser marking machine according to claim 1, characterized in that: The sprocket assembly comprises a sprocket motor (17), a chain (45) at the top of the galvanometer box (12), a sprocket (43) and an auxiliary sprocket (50); the sprocket motor (17) is fixedly mounted on the top of the housing (38); the output end of the sprocket motor (17) is connected to a sprocket shaft (44); the sprocket shaft (44) extends into the housing (38) and is fixedly mounted with the sprocket (43); the other end of the sprocket shaft (44) is mounted on the top of the galvanometer box (12) via a bearing seat; the sprocket (43) is surrounded by the chain (45) via two auxiliary sprockets (50); and the chain (45) is arranged close to the floating plate.

6. The auxiliary focus type laser marking machine according to claim 3, characterized in that: Outwardly expanded bell mouths are provided at the T-slot openings at the ends of the first floating plate (35), the second floating plate (36) and the third floating plate (37).

7. The auxiliary focus type laser marking machine according to claim 1, characterized in that: The operating table (15) is provided with a guide groove, the guide groove is deepened downwards and the deepened portion extends to both sides and converges into a T-shape to form a first slide groove (29), and a bottom plate (30) is slidably installed in the first slide groove (29).

8. The auxiliary focus type laser marking machine according to claim 7, characterized in that: A first rod inlet (28) is provided on the slide rail (22); and a second rod inlet (41) is provided on the second pole plate (34).

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