Assisted focusing-type laser marking machine

Abstract

An assisted focusing-type laser marking machine, comprising an operating platform (15), wherein a sliding rail (22) is provided on the operating platform (15); an adjustment column (11) is fixedly mounted on the top of the operating platform (15); a support plate (16) is mounted on the adjustment column (11); a laser device (10) is provided on the top of the support plate (16); a beam expanding cylinder (14) is fixedly arranged on the laser device (10); a galvanometer box (12) is rotationally connected to the end of the beam expanding cylinder (14) away from the laser device (10); a field lens (13) is mounted at the bottom of the galvanometer box (12); a rotating sleeve (47) is sleeved on the beam expanding cylinder (14), and one end of the rotating sleeve (47) is fixedly connected to the galvanometer box (12); a gear (18) is fixedly arranged at the periphery of the rotating sleeve (47) close to the laser device (10); a worm electric motor (20) is provided at an end of the laser device (10), and a worm (19) at an output end of the worm electric motor (20) meshes with the gear (18); a housing (38) is provided at the periphery of the galvanometer box (12); a rotating shaft (54) is fixedly arranged on the outer side of the housing (38); support frames (21) are provided on two sides of the rotating shaft (54); an annular body (52) is sleeved on the rotating shaft (54); transverse shafts (53) are symmetrically fixedly arranged on two sides of the annular body (52), and the transverse shafts (53) are hinged to the support frames (21); and a lifting assembly is provided at the other end of the laser device (10). By means of configuring foot rods (27) to drive electrically conductive contacts of floating plates to come into contact with electrically conductive contacts of electrode plates, a circuit is connected, and the galvanometer box (12) is controlled to rotate, thereby adjusting the levelness.

Description

Auxiliary focusing type laser marking machine TECHNICAL FIELD

[0001] The present application relates to the technical field of marking equipment, in particular to an auxiliary focusing type laser marking machine. BACKGROUND

[0002] If there is a slight difference between the light path system of the laser marking machine and the horizontal level of the workpiece to be marked, the marking depth of the workpiece to be marked will be uneven, the effect of marking will be obviously different, and the workpiece to be marked will be a defective product or be scrapped. Therefore, the slight difference between the light path system of the laser marking machine and the horizontal level of the workpiece to be marked has a very bad effect on the entire marking.

[0003] Chinese patent document CN218016420U discloses a laser marking machine with adjusting function, which comprises a laser marking platform and a laser marking head. The top side of the laser marking platform is provided with a marking placement frame through a telescopic assembly. The top side of the laser marking platform is fixedly provided with a support. A horizontal adjusting hole is formed in one side of the support. The laser marking machine with adjusting function is placed on the marking placement frame for horizontal adjustment. The horizontal adjustment positioning assembly holds the hand-held groove and pulls it upward. After pulling, the hand-held groove moves, thereby driving the hand-held block to move. The movement of the hand-held block drives the adjustment block to move in the horizontal adjusting hole, so as to adjust in the horizontal direction. Then, the rotary adjusting disc is rotated to drive the laser marking head to rotate and adjust. After the laser marking head is rotated and adjusted, the position is adjusted and fixed through the rotary positioning assembly, so as to realize the position adjustment of the laser marking. The adjustment is relatively convenient.

[0004] In the prior art, the horizontal adjustment of the light path system needs to be manually pulled by hand, needs to be manually operated for many times, is time-consuming and laborious, and the precision is difficult to grasp. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides an auxiliary focusing type laser marking machine. A foot rod is arranged between an operation table and a galvanometer box. The foot rod drives the conductive contact of a floating plate and a polar plate to be in contact, so as to realize the connection of the circuit, control the rotation of the galvanometer box, and realize the automatic leveling in the front, rear, left and right directions.

[0006] In order to achieve the above-mentioned purpose, the present application provides an auxiliary focusing type laser marking machine, which comprises an operation table. A slide rail is arranged on the operation table. An adjusting column is fixedly installed on the top of the operation table. A supporting plate is installed on the adjusting column. A laser is arranged on the top of the supporting plate. An expansion cylinder is fixedly arranged at one end of the laser. A galvanometer box is rotatably connected to the end of the expansion cylinder away from the laser. A field lens is installed at the bottom of the galvanometer box.

[0007] The rotating sleeve is fixedly connected with the galvanometer box at one end, a gear is fixedly arranged on the outer periphery of the rotating sleeve close to the laser, a worm motor is arranged on the end of the laser close to the gear, the output end of the worm motor is connected with a worm, and the worm is engaged with the gear; 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 away from the beam expander, the two side edges of the support plate extend towards the rotating shaft and symmetrically form L-shaped support frames, a ring body is arranged on the rotating shaft, horizontal shafts are symmetrically fixedly arranged on the two sides of the ring body, the ends of the horizontal shafts away from the ring body are hingedly connected with the L-shaped support frames on the two sides, and a lifting assembly is arranged on the side of the laser away from the beam expander.

[0008] The lifting assembly comprises a tail plate fixedly arranged on the end of the laser, the tail plate and the support plate are elastically connected through a tension spring, an electric cylinder is fixedly arranged on the bottom of the support plate close to the tail plate, the telescopic rod of the electric cylinder penetrates the support plate upwards, and the free end of the telescopic rod abuts against the tail plate.

[0009] The galvanometer box is provided with a triggering assembly, the triggering assembly is electrically connected with the worm motor and the electric cylinder, the triggering assembly comprises a first polar plate, a second polar plate and a floating plate, a cavity is formed between the shell and the galvanometer box, the galvanometer box is fixedly connected with the inner wall of the shell close to the beam expander, the bottom of the shell is open, two groups of chain wheel assemblies are symmetrically arranged in the cavity of the top of the galvanometer box, the first polar plate and the second polar plate are fixedly arranged on the cavity top of the outer periphery of the galvanometer box from top to bottom, the first polar plate and the second polar plate both have a symmetrical U-shaped structure, and the vertical and horizontal connecting portions are both in the form of an arc segment, the floating plate is connected between the first polar plate and the second polar plate through a spring, and the floating plate is arranged intermittently; a second sliding groove is formed in the floating plate, two foot rods are symmetrically arranged in the second sliding groove, one end of the foot rod is slidingly arranged in the second sliding groove, the other end of the foot rod is slidingly arranged in a sliding rail, a guide sleeve is slidingly arranged on the foot rod, the outer side of the guide sleeve is connected with a chain of the chain wheel assembly through a horizontal rod, and when the galvanometer box is inclined, the floating plate contacts the first polar plate or the second polar plate.

[0010] The floating plate comprises a first floating plate, a second floating plate and a third floating plate, the upper and lower surfaces close to the end of the first floating plate, the second floating plate and the third floating plate are all provided with conductive contacts, and the conductive contacts on the floating plate are correspondingly arranged with matched conductive contacts on the lower end face of the first polar plate and the upper end face of the second polar plate.

[0011] When the galvanometer box is inclined in the extension direction of the first floating plate relative to the operation table, the two foot rods move reversely, the conductive contacts of the first floating plate are in communication with the matched conductive contacts on the polar plate, the worm motor is powered to rotate, the galvanometer box is driven to rotate in the extension direction of the first floating plate to the direction opposite to the inclination, and when the galvanometer box is adjusted to be parallel, the first floating plate is parallel to the polar plate, the conductive contacts are disconnected, and the worm motor is stopped.

[0012] When the galvanometer box is tilted relative to the operation table in the direction perpendicular to the first floating plate, the two foot rods move in the direction of the floating plate, and the conductive contacts on the floating plate are communicated with the paired conductive contacts on the polar plate, so that the electric cylinder is powered to extend and retract, and the galvanometer box is driven to rotate in the direction opposite to the tilting in the direction perpendicular to the first floating plate, and when it is adjusted to be parallel, the floating plate is parallel to the polar plate, and the conductive contacts are disconnected, and the electric cylinder is stopped.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1、The present application sets the front and back levels of the galvanometer box by the meshing rotation of the worm and the gear, and sets the left and right levels of the galvanometer box by the cooperation of the electric cylinder and the tension spring; the foot rods are arranged between the galvanometer box and the operation table, the rotation of the chain wheel motor controls the rotation of the chain to drive the two foot rods to move in the slide rails, the lifting discs at the top ends of the two foot rods slide in the T-shaped grooves of the floating plate, and the bottom discs at the bottom ends of the two foot rods slide in the T-shaped grooves of the slide rails; when the galvanometer box is tilted relative to the operation table, the conductive contacts on the floating plate are connected with the conductive contacts of the first polar plate or the second polar plate, the circuit is connected, the screw rod motor or the electric cylinder is started, and the front and back or left and right levels of the galvanometer box are controlled and adjusted; when the floating plate and the first polar plate and the second polar plate are parallel to each other, that is, when the galvanometer box and the operation table are parallel, the conductive contacts of the floating plate are disconnected with the conductive contacts of the two polar plates, and the worm motor and the electric cylinder stop working; the rotation of the chain drives the two foot rods to continue to move forward, and when the conductive contacts on the floating plate are connected with the conductive contacts of the first polar plate or the second polar plate, the worm motor or the electric cylinder is started again, the horizontal angle of the galvanometer box is adjusted, and until the floating plate and the first polar plate and the second polar plate are parallel to each other, the worm motor and the electric cylinder stop working; in the stroke of the slide rail, the horizontal angle of the galvanometer box can be automatically adjusted multiple times until the floating plate and the two polar plates are parallel, and the adjustment of the level is completed.

[0015] The present application adjusts the relative parallelism of the galvanometer box and the operation table through the cooperation of the foot rods, the floating plate and the two polar plates, ensures that the marking depth of the marked workpiece is consistent, and improves the marking quality; the horizontal angle of the galvanometer box can be automatically adjusted multiple times, the horizontal adjustment in multiple directions such as front and back and left and right is realized, the adjustment accuracy is ensured, time and labor are saved, and work is efficient.

[0016] 2、In the present application, the bottom ends of the two foot rods are slidably installed in the slide rails of the operation table, and the top ends are slidably installed in the floating plate; according to the difference in the parallelism of the galvanometer box and the operation table, the foot rods cause the floating plate to be shifted up and down, the upper and lower paired conductive contacts are connected, the worm motor or the electric cylinder is powered to start, and the galvanometer box is driven to rotate, and finally the leveling is realized.

[0017] During the sliding of the foot pole, the foot pole bottom touch plate reflects the level information of the operation table to the floating plate through the foot pole lifting plate, and then the leveling is carried out; the length of the foot pole can be adjusted, which can adapt to the height adjustment under different focal lengths, the foot pole is detachable, and after the horizontal adjustment is finished, it is detached, space is saved, and the operation of laser marking is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a front perspective view of the laser marking machine installation structure of the present application;

[0019] Fig. 2 is a rear perspective view of the laser marking machine installation structure of the present application;

[0020] Fig. 3 is a top perspective view of the galvanometer box and shell installation structure of the present application;

[0021] Fig. 4 is a perspective view of the galvanometer box top installation structure of the present application;

[0022] Fig. 5 is a top perspective view of the sprocket assembly of the galvanometer box top of the present application;

[0023] Fig. 6 is a perspective view of the galvanometer box top and foot pole installation structure of the present application;

[0024] Fig. 7 is a perspective view of the floating plate and pole plate installation structure of the galvanometer box top of the present application;

[0025] Fig. 8 is a partial sectional view of the floating plate and pole plate of the galvanometer box top of the present application;

[0026] Fig. 9 is a perspective view of the floating plate and pole plate arc segment structure of the galvanometer box top of the present application;

[0027] Fig. 10 is a partially sectional perspective view of Fig. 9 along A-A;

[0028] Fig. 11 is a perspective view of the foot pole connection structure of the present application;

[0029] Fig. 12 is a perspective view of the foot pole and sliding groove installation structure of the present application;

[0030] Fig. 13 is a partially sectional perspective view of the foot pole and sliding groove installation structure of the present application;

[0031] In the figure: 10, laser; 11, adjusting column; 12, galvanometer box; 13, field lens; 14, beam expander; 15, operation 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 chute; 30, bottom touch disc; 31, connecting sleeve; 32, conical nut; 33, first polar plate; 34, second polar plate; 35, first floating plate; 36, second floating plate; 37, third floating plate; 38, shell; 39, second chute; 40, lifting disc; 41, second rod inlet; 42, guide sleeve; 43, sprocket; 44, sprocket shaft; 45, chain; 46, ring channel; 47, rotating sleeve; 48, first rod body; 49, second rod body; 50, auxiliary sprocket; 51, spring; 52, ring body 52; 53, cross shaft 53; 54, rotating shaft 54. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0033] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0034] As shown in FIGS. 1-13, an auxiliary focusing type laser marking machine includes an operation table 15, the operation table 15 is provided with a slide rail 22, the operation table 15 is fixedly installed with an adjusting column 11 on the top, the adjusting column 11 is installed with a support plate 16, the support plate 16 is provided with a laser 10 on the top, one end of the laser 10 is fixedly provided with a beam expander 14, the beam expander 14 is rotatably connected with a galvanometer box 12 away from one end of the laser 10, and the bottom of the galvanometer box 12 is installed with a field lens 13. The inside of the adjusting column 11 is provided with a threaded adjusting rod matched with the support plate 16, which is used for adjusting the vertical position of the support 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.

[0035] The rotation sleeve 47 is sleeved on the expansion cylinder 14, one end of the rotation sleeve 47 is fixedly connected with the galvanometer box 12. The rotation sleeve 47 is fixed with a gear 18 near the outer periphery of the laser 10, the laser 10 is installed with a worm motor 20 near the end of the gear 18, the output end of the worm motor 20 is connected with a worm 19, and the worm 19 is engaged with the gear 18.

[0036] The outer periphery of the galvanometer box 12 is provided with a shell 38, the shell 38 is fixed with a rotating shaft 54 away from the outer side of the expansion cylinder 14, and the rotating shaft 54 is coincided with the center line of the rotation sleeve 47. The two sides of the support plate 16 extend to the direction of the rotating shaft 54 and symmetrically form L-shaped support frames 21. The rotating shaft 54 is sleeved with a ring body 52, the two sides of the ring body 52 are symmetrically fixed with horizontal shafts 53, and the ends of the horizontal shafts 53 away from the ring body 52 are hinged with the L-shaped support frames 21 on the two sides. The laser 10 is installed with a lifting assembly away from the expansion cylinder 14.

[0037] The rotating shaft 54 on the galvanometer box 12 is rotatable in the ring body 52, the worm 19 is engaged with the gear 18 to drive the rotation of the rotation sleeve 47 and the galvanometer box 12, so as to adjust the levelness in the front-back direction (the front-back direction refers to Fig. 1), wherein the worm motor 20 can be forward and reverse rotated. The engagement of the worm 19 and the gear 18 has a self-locking function to prevent non-operational activities.

[0038] The lifting assembly is used to adjust the levelness of the galvanometer box 12 in the left-right direction (the left-right direction refers to Fig. 1), which is further described in the following paragraphs.

[0039] When the lifting assembly is displaced up and down, the laser 10, the expansion cylinder 14 and the galvanometer box 12 are driven to rotate around the horizontal shaft 53 to realize the adjustment of the levelness. During the rotation, the ring body 52 supports the rotating shaft 54 and limits the radial displacement thereof. The horizontal distance between the horizontal shaft 53 and the foot rod 27 is small, which is a reasonable error range and does not affect the adjustment level.

[0040] The outer part of the galvanometer box 12 is provided with a trigger assembly, which is electrically connected with the worm motor 20 and the electric cylinder 26. The trigger assembly comprises a first electrode plate 33, a second electrode plate 34 and a floating plate. The outer periphery of the galvanometer box 12 is provided with a shell 38, and a cavity is formed between the shell 38 and the galvanometer box 12. The shell 38 is fixedly connected with the galvanometer box 12 near the inner wall of the beam expander 14, and the bottom of the shell 38 is open. The top of the cavity of the galvanometer box 12 is symmetrically provided with two groups of chain wheel assemblies, and the top of the cavity of the outer periphery of the galvanometer box 12 is fixedly provided with the first electrode plate 33 and the second electrode plate 34 from top to bottom. The first electrode plate 33 and the second electrode plate 34 are both U-shaped structures which are left-right symmetrical, and the vertical and horizontal connecting parts are all arc segments. The floating plate is connected between the first electrode plate 33 and the second electrode plate 34 through a spring, and the floating plate is intermittently arranged. The floating plate is provided with a second sliding groove 39, and two foot rods 27 are arranged in the second sliding groove 39. One end of the foot rod 27 is slidably installed in the second sliding groove 39, and the other end of the foot rod 27 is slidably installed in the sliding 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 with the chain of the chain wheel assembly through a cross bar. When the galvanometer box 12 is tilted, the floating plate contacts the first electrode plate 33 or the second electrode plate 34.

[0041] As shown in FIG. 1, the gear 18 is installed on the rotating sleeve 47 fixedly connected with the galvanometer box 12, and the worm motor 20 and the worm 19 are installed at the end of the laser 10. The worm 19 is engaged with the gear 18. The worm motor 20 is adjusted to drive the worm 19, and the engagement between the worm 19 and the gear 18 makes the gear rotate. The rotating sleeve 47 is driven by the gear 18 to rotate together with the galvanometer box 12, so as to realize the horizontal adjustment of the galvanometer box 12 in the front-back direction. The other end of the laser 10 is provided with a lifting assembly. The galvanometer box 12 is rotated around the horizontal shaft 53 by adjusting the lifting assembly, so as to realize the horizontal adjustment of the galvanometer box 12 in the left-right direction.

[0042] The first electrode plate 33 and the second electrode plate 34 are fixedly arranged on the top of the cavity between the shell 38 and the galvanometer box 12 from top to bottom, and the floating plate is connected between the first electrode plate 33 and the second electrode plate 34 through a spring. The floating plate is intermittently arranged. The upper end surface of the floating plate is provided with a conductive contact point corresponding to the lower end surface of the first electrode plate 33, and the lower end surface of the floating plate is provided with a conductive contact point corresponding to the upper end surface of the second electrode plate 34. The conductive contact points are connected with the worm motor 20 or the electric cylinder 26 in the lifting assembly through wires. When the conductive contact points are communicated, the movement of the worm motor 20 or the electric cylinder 26 in the lifting assembly is controlled, and the forward or reverse movement is realized (the specific connection mode is described in the following paragraphs), so as to control the horizontal adjustment of the galvanometer box 12.

[0043] The floating plate is provided with a second sliding groove 39, and two foot rods 27 are arranged in the second sliding groove 39. One end of the foot rod 27 is slidingly arranged in the second sliding groove 39, and the other end of the foot rod 27 is slidingly connected in the sliding rail 22. A guide sleeve 42 is slidingly arranged on the foot rod 27, and the outer side of the guide sleeve 42 is connected to the chain of the chain wheel assembly through a cross bar. The two ends of the cross bar are fixedly connected with the guide sleeve 42 and the chain respectively, and the middle part of the cross bar is provided with a rotatable connecting joint. When the galvanometer box 12 is inclined, the guide sleeve 42 is inclined with the foot rod 27, which is beneficial to the longitudinal sliding and transverse limiting of the guide sleeve 42 relative to the foot rod 27 inside.

[0044] When the galvanometer box 12 is inclined, the floating plate contacts the first or second pole plate 33 or 34. When the chain of the chain wheel assembly rotates, the guide sleeve 42 fixedly connected with the chain moves with the chain, and the guide sleeve 42 drives the two foot rods 27 to move, and the moving directions of the two are symmetrical.

[0045] Further, the lifting assembly includes a tail plate 23 fixedly arranged at the end of the laser 10, and the tail plate 23 is elastically connected with the support plate 16 through a tension spring 24. The bottom of the support plate 16 is fixedly provided with an electric cylinder 26 adjacent to the tail plate 23, the telescopic rod 25 of the electric cylinder 26 penetrates the support plate 16 upwards, and the free end of the telescopic rod 25 abuts against the tail plate 23. When the telescopic rod 25 is elongated to push the tail plate 23 to move upwards, relative sliding occurs between the two, the area of the tail plate 23 is enough to cover the contact position of the telescopic rod 25, so that the tail plate 23 cannot be separated from the telescopic rod 25.

[0046] As shown in FIG. 1 and FIG. 2, the tension spring 24 connects the tail plate 23 and the support plate 16, and the tail plate 23 is fixedly connected with the end of the laser 10. The tension spring 24 generates 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 are in a balanced state. When the telescopic rod 25 is elongated or shortened, the laser 10 is adjusted to rotate around the horizontal shaft 53, and the left-right direction levelness of the galvanometer box 12 is adjusted.

[0047] The worm motor 20 is a small-angle stepping motor, and the electric cylinder 26 is configured at a low speed. The worm motor 20, the electric cylinder 26, the chain wheel motor 17, the laser 10, the beam expander 14, and the field lens 13 can be commercially available.

[0048] The laser 10 is used for emitting laser, the beam expander 14 is used for changing the diameter and divergence angle of the laser beam, and the field lens 13 is used for focusing the collimated laser beam at a point to improve the energy density of the laser beam, so that the high energy of the laser is used to mark and process materials. These are all prior art, and will not be described in detail. The worm motor 20, the electric cylinder 26, the chain wheel motor 17, and the laser 10 are connected to an external power supply through wires.

[0049] Further, the foot rod 27 comprises a first rod body 48 and a second rod body 49, the bottom end of the first rod body 48 is fixedly connected with the connecting sleeve 31, the other end of the connecting sleeve 31 is provided with external threads and is spaced apart with a gap, and the top of the second rod body 49 is fastened with the connecting sleeve 31 through the tapered nut 32. The top end of the first rod body 48 is provided with the lifting disc 40 which slides in the floating plate. The bottom end of the second rod body 49 is provided with the bottom touch disc 30 which slides in the sliding rail 22.

[0050] Fig. 8, Fig. 11, Fig. 12 and Fig. 13 show that the first rod body 48 and the second rod body 49 are fastened through the connecting sleeve 31 and the tapered nut 32, the connecting sleeve 31 internally contains the telescopic section of the second rod body 49, realizes the length adjustment of the foot rod 27, and is suitable for the length adjustment when the galvanometer box 12 and the operation table 15 are initially installed. When the adjustment is completed, the second rod body 49 can be removed for laser marking (shown in Fig. 1).

[0051] The guide sleeve 42 is sleeved on the first rod body 48, when the chain of the chain wheel assembly drives the guide sleeve 42 to move with the chain, the guide sleeve 42 drives the first rod body 48, so that the lifting disc 40 on the first rod body 48 slides in the floating plate, and the bottom touch disc 30 of the second rod body 49 slides in the sliding rail 22. In the movement process of the foot rod 27, the guide sleeve 42 can slide up and down outside the first rod body 48.

[0052] Further, the floating plate comprises 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 axis direction of the beam expander 14, the second floating plate 36 and the third floating plate 37 are respectively located at two sides of the first floating plate 35 and are symmetrically arranged. The end of the first floating plate 35, the second floating plate 36 and the third floating plate 37 are all elastically connected with the first polar plate 33 and the second polar plate 34 through springs. T-shaped grooves are formed in the first floating plate 35, the second floating plate 36 and the third floating plate 37, and the three T-shaped grooves form the second sliding groove 39 in which the lifting disc 40 of the foot rod 27 is slidably installed. The T-shaped groove openings of the first floating plate 35, the second floating plate 36 and the third floating plate 37 are all provided with outwardly expanded trumpet mouths. The upper end surface of the floating plate is provided with a corresponding conductive contact installed on the lower end surface of the first polar plate 33, and the lower end surface of the floating plate is provided with a corresponding conductive contact installed on the upper end surface of the second polar plate 34.

[0053] As shown in FIG. 4, FIG. 8, FIG. 9 and FIG. 10, the upper end surface of the first floating plate 35 and the lower end surface of the first pole plate 33 are correspondingly provided with conductive contacts, which are located near the two ends of the first floating plate 35. When the galvanometer box 12 is tilted forward or backward, the first floating plate 35 is no longer parallel to the first pole plate 33 under the action of the two lift plates 40, and the conductive contacts at the two ends can produce the maximum deviation and timely contact the power supply to reduce the error.

[0054] For the convenience of clearly expressing the relative position relationship, referring to FIG. 1 and FIG. 4, it is agreed that the clockwise or counterclockwise direction is determined when looking from the laser 10 to the shell 38; the side close to the adjusting column 11 is the front, and the opposite direction is the back, and the shell 38 is on the left and the laser 10 is on the right.

[0055] As shown in FIG. 1 and FIG. 4, the conductive contacts (not shown in the figure) include fixed block metal provided on one end surface and elastic sheet metal provided on the opposite contact surface, and the metal is conductive metal, preferably copper. Two sets of corresponding conductive contacts are connected to the screw motor 20 or two sets of corresponding conductive contacts are connected to the electric cylinder 26. The elastic sheet metal is located at the projection center of the fixed block metal, which ensures that the two are in contact and connected when the power is on, even if the horizontal relative position is misaligned, and still in the state of mutual contact and connection, ensuring the normal operation of the worm motor 20 or the electric cylinder. The elastic sheet is provided on the contact surface, which is beneficial to control the distance from the other contact surface and reduce the error. When the two opposite contact surfaces are in contact, the elastic sheet can be compressed without affecting the movement relationship between the moving parts (such as the sliding of the lift plate 40 in the floating plate and the sliding of the bottom plate 30 in the sliding rail 22).

[0056] In the present application, the up-down gap of the lift plate 40 in the floating plate, the up-down gap of the bottom plate 30 in the sliding rail 22, and the contact gap between the conductive contacts (elastic sheet metal and fixed block metal) are all within a reasonable error range, which does not affect the accurate use of the laser marking machine.

[0057] The two foot rods 27 in front and back are symmetrically arranged, and the foot rods 27 move in opposite or relative directions in the first floating plate 35.

[0058] If the front and back directions of the galvanometer box 12 are inclined relative to the operation table 15: there are two cases of low front and high back, and high front and low back.

[0059] The first pole plate 33 includes front and back sections and two sides of symmetric left and right sections, and the second pole plate 34 includes front and back sections and two sides of symmetric left and right sections.

[0060] When the mirror box 12 appears a tilt state of low front and high back, the front and back sections of the first and second polar plates 33 and 34 are low front and high back with the mirror box 12, and the two foot bars 27 run to the front and back ends, the first floating plate 35 is parallel to the operating table 15 under the action of the lifting disc 40, and in this process, the upper surface conductive contact of the front end of the first floating plate 35 is in communication with the lower surface conductive contact of the front end of the first polar plate 33, or the lower surface conductive contact of the back end of the first floating plate 35 is in communication with the upper surface conductive contact of the back end of the second polar plate 34, the circuit of the worm motor 20 is connected, the worm motor 20 is controlled to rotate reversely, finally drives the mirror box 12 to rotate clockwise, until the first floating plate 35 is parallel to the first and second polar plates 33 and 34, the communicating conductive contacts are separated, and the worm motor 20 stops running.

[0061] When the mirror box 12 appears a tilt state of low front and high back, the front and back sections of the first and second polar plates 33 and 34 are low front and high back with the mirror box 12, and the two foot bars 27 run to the front and back ends, the first floating plate 35 is parallel to the operating table 15 under the action of the lifting disc 40, and in this process, the upper surface conductive contact of the front end of the first floating plate 35 is in communication with the lower surface conductive contact of the front end of the first polar plate 33, or the lower surface conductive contact of the back end of the first floating plate 35 is in communication with the upper surface conductive contact of the back end of the second polar plate 34, the circuit of the worm motor 20 is connected, the worm motor 20 is controlled to rotate reversely, finally drives the mirror box 12 to rotate clockwise, until the first floating plate 35 is parallel to the first and second polar plates 33 and 34, the communicating conductive contacts are separated, and the worm motor 20 stops running.

[0062] The rotating chain 45 drives the two foot bars to continue to run, and the automatic adjustment can be realized multiple times in the stroke of the slide rail 22, until the floating plate is parallel to the two polar plates, and the front and back horizontal adjustment is completed.

[0063] Through the above adjustment mode, the front and back positions of the mirror box 12 are in a horizontal state.

[0064] In the process of horizontal adjustment of the laser marking machine, the front and back are first adjusted to be horizontal, and then the left and right are adjusted to be horizontal; when the left and right are adjusted to be horizontal, the front and back have been adjusted to be horizontal. At this time, two situations may occur, the mirror box 12 is high on the left and low on the right, or low on the left and high on the right.

[0065] The second and third floating plates 36 and 37 are symmetrically arranged relative to the first floating plate 35, and the two foot bars 27 symmetrically slide in the second and third floating plates 36 and 37. The principles of the two are similar, and the second floating plate 36 is taken as an example for description.

[0066] When the mirror box 12 appears left high right low tilt state, the foot bar 27 runs from left to right in the second floating plate 36 left and right section, the foot bar 27 will be the second floating plate 36 up, the second floating plate 36 upper surface end of the conductive contact with the first plate 33 lower surface end of the conductive contact, the electric cylinder 26 is connected, the telescopic rod 25 is elongated to lift the tail plate 23, make the mirror box 12 right side around the horizontal axis 53 upward rotation (see figure 1), make the mirror box 12 left and right balance. Foot bar in the slide rail 22 can be multiple times to start the electric cylinder 26 to make the mirror box 12 around the horizontal axis 53 rotation, until the second floating plate 36 and the first plate 33 and the second plate 34 parallel, the electric cylinder 26 stop working, left and right horizontal adjustment is completed.

[0067] When the mirror box 12 appears left low right high tilt state, the foot bar 27 runs from left to right in the second floating plate 36 left and right section, the foot bar 27 will be the second floating plate 36 down, the second floating plate 36 lower surface end of the conductive contact with the second plate 34 upper surface end of the conductive contact, the electric cylinder 26 is connected, the telescopic rod 25 is shortened, the tail plate 23 is pulled down, make the mirror box 12 right side around the horizontal axis 53 downward rotation (see figure 1), make the mirror box 12 left and right balance. Foot bar in the slide rail 22 can be multiple times to start the electric cylinder 26 to make the mirror box 12 around the horizontal axis 53 rotation, until the second floating plate 36 and the first plate 33 and the second plate 34 parallel, the electric cylinder 26 stop working, left and right horizontal adjustment is completed.

[0068] The second floating plate 36 and the third floating plate 37 are the same, not described here.

[0069] Through the above adjustment mode, the left and right position of the mirror box 12 is in the horizontal state. Finally make the mirror box 12 in the front and back and left and right four directions in the horizontal.

[0070] The second plate 34 is provided with a limiting groove, and the arc segment at the longitudinal and transverse connection of the second plate 34 is provided with an arc groove. The limiting groove and the arc groove are communicated to form a ring channel 46. The first rod body 48 slides in the ring channel 46, and the ring channel 46 plays a role of side limiting for the first rod body 48. The lifting disc 40 at the top of the first rod body 48 slides in the T-shaped groove of the floating plate.

[0071] When the lifting disc 40 travels to the arc segment, the T-shaped grooves at the ends of the first floating plate 35, the second floating plate 36 and the third floating plate 37 are in and out, and the openings are all provided with outwardly expanded trumpet mouths, which are used for compensating the plane error between the three floating plates, so that the lifting disc 40 smoothly enters the T-shaped groove.

[0072] Further, the sprocket assembly comprises a sprocket motor 17, a chain 45 at the top end of the galvanometer box 12, a sprocket 43 and an auxiliary sprocket 50, the sprocket motor 17 is fixedly installed at the top of the shell 38, the output end of the sprocket motor 17 is connected with a sprocket shaft 44, the sprocket shaft 44 extends into the shell 38 and is fixedly installed with the sprocket 43, the other end of the sprocket shaft 44 is installed at the top of the galvanometer box 12 through a bearing seat, the sprocket 43 is installed with the chain 45 through two auxiliary sprockets 50, and the chain 45 is arranged close to the floating plate.

[0073] As shown in FIG. 4-7, the outer side of the guide sleeve 42 is connected with the chain 45 of the sprocket assembly through a cross bar, the two ends of the cross bar are fixedly connected with the guide sleeve 42 and the outer side of the chain 45 respectively, and a rotatable connecting joint is arranged in the middle of the cross bar, when the galvanometer box 12 is inclined, the guide sleeve 42 turns with the foot rod 27, which is beneficial to the guidance of the longitudinal sliding and the transverse limiting of the foot rod 27 in the guide sleeve 42.

[0074] The middle part of the first floating plate 35, the end of the second floating plate 36 close to the beam expander 14 and the end of the third floating plate 37 close to the beam expander 14 are all provided with limiting members for stopping the operation of the sprocket motor 17, so that the foot rod 27 can operate in a normal range.

[0075] Further, a guide groove is formed in the operation table 15, the guide groove is downwardly deepened and the deepened part extends to both sides to form a T shape, forming a first sliding groove 29, and the foot rod 27 is installed with a bottom touch disc 30 in the first sliding groove 29.

[0076] The bottom touch disc 30 and the lifting disc 40 are both arranged to be thick in the middle part and thin at the edges, which is beneficial to the sliding in the sliding groove.

[0077] As shown in FIG. 12 and FIG. 13, the bottom touch disc 30 slides in the first sliding groove 29, and the bottom touch disc 30 is used to reflect the reference surface in the embodiment and to determine the relative levelness of other planes. A first rod inlet 28 is formed in the sliding rail 22 for installing or dismounting the bottom of the foot rod 27. A second rod inlet 41 is formed in the second electrode plate 34 for installing or dismounting the top of the foot rod 27.

[0078] Working principle:

[0079] Firstly, the corresponding focal length of the laser marking machine is adjusted through the lifting adjusting column 11, the supporting plate 16 is locked, the conical nut 32 is unscrewed, the bottom touch disc 30 at the bottom of the second rod body 49 is placed into the first rod inlet 28, and then the bottom touch disc 30 is slid into the first sliding groove 29, and the conical nut 32 is screwed to fix the sleeve 31 and the second rod body 49.

[0080] Next, the sprocket motor 17 is started, driving the chain 45 to rotate. The chain 45 drives the foot rods 27 to move through the guide sleeve 42. The two foot rods 27 move in opposite directions within the first floating plate 35, keeping the first floating plate 35 relatively parallel to the operating table 15 during operation. When the galvanometer box 12 tilts in the front-back direction, the front and rear sections of the first electrode plate 33 and the second electrode plate 34 tilt accordingly. The conductive contacts on the first floating plate 35 connect with the conductive contacts of the first electrode plate 33 or the second electrode plate 34, activating the worm motor 20 to rotate. This causes the worm 19 to drive the gear 18 to rotate, making the galvanometer box 12 rotate left and right. When the first floating plate 35 is parallel to the first electrode plate 33 and the second electrode plate 34, the conductive contacts disconnect, and the worm motor 20 stops rotating. As the foot rods 27 slide in the slide rail 22, the worm motor 20 can be started multiple times to control the rotation of the galvanometer box 12 for automatic adjustment until the first floating plate 35 is parallel to the two electrode plates, completing the front-back horizontal adjustment.

[0081] Next, the rotating chain 45 drives the two foot rods 27 into 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 connect with the conductive contacts on the left and right sections of the first electrode plate 33 or the second electrode plate 34, or the conductive contacts on the third floating plate 37 connect with the conductive contacts on the left and right sections of the first electrode plate 33 or the second electrode plate 34. The circuit is activated, starting the electric cylinder 26 to extend or shorten the telescopic rod 25, causing the galvanometer box 12 to rotate 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 disconnect, and the electric cylinder 26 stops working. As the foot rods 27 slide in the slide rail 22, the electric cylinder 26 can control the rotation of the galvanometer box 12 multiple times to automatically adjust the level until the floating plate is parallel to the two electrode plates, completing the front and back level adjustment.

[0082] The chain 45 rotates, driving the two foot rods to continue moving forward. During the stroke of the slide rail 22, multiple automatic adjustments can be made 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.

[0083] The above completes the horizontal adjustment of the galvanometer box 12 in four directions: front, back, left, and right.

[0084] The present invention has been illustrated 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 all related improvements to the present invention fall within the protection and disclosure scope of the present invention.

Claims

1. An auxiliary focusing type laser marking machine, comprising an operating table (15) provided with a slide rail (22), a regulating column (11) fixedly installed on the top of the operating table (15), a supporting plate (16) installed on the regulating column (11), a laser (10) provided on the top of the supporting plate (16), an expansion cylinder (14) fixedly provided at one end of the laser (10), a galvanometer box (12) rotatably connected to the end of the expansion cylinder (14) away from the laser (10), and a field lens (13) installed on the bottom of the galvanometer box (12), characterized in that, a rotating sleeve (47) is sleeved on the expansion cylinder (14), one end of the rotating sleeve (47) is fixedly connected with the galvanometer box (12), a gear (18) is fixedly provided on the outer periphery of the rotating sleeve (47) close to the laser (10), a worm motor (20) is installed on the end of the laser (10) close to the gear (18), the output end of the worm motor (20) is connected with a worm (19), and the worm (19) is engaged with the gear (18); a housing (38) is provided on the outer periphery of the galvanometer box (12), a rotating shaft (54) is fixedly provided on the outer side of the housing (38) away from the expansion cylinder (14), the two side edges of the supporting plate (16) extend towards the rotating shaft (54) and symmetrically form L-shaped supporting frames (21), a ring body (52) is sleeved on the rotating shaft (54), horizontal shafts (53) are symmetrically fixedly provided on the two sides of the ring body (52), the ends of the horizontal shafts (53) away from the ring body (52) are hingedly connected with the two L-shaped supporting frames (21), and a lifting assembly is installed on the side of the laser (10) away from the expansion cylinder (14); the lifting assembly comprises a tail plate (23) fixedly provided at the end of the laser (10), the tail plate (23) and the supporting plate (16) are elastically connected through a tension spring (24), an electric cylinder (26) is fixedly installed on the bottom of the supporting plate (16) close to the tail plate (23), the telescopic rod (25) of the electric cylinder (26) penetrates the supporting plate (16) upwards, and the free end of the telescopic rod (25) abuts against the tail plate (23). The outer part of the galvanometer box (12) is provided with a trigger assembly electrically connected between the worm motor (20) and the electric cylinder (26), the trigger assembly comprises a first polar plate (33), a second polar plate (34) and a floating plate, a cavity is formed between the shell (38) and the galvanometer box (12), the shell (38) is fixedly connected with the inner wall of the beam expander (14) and the galvanometer box (12), the bottom of the shell (38) is open, the top of the outer cavity of the galvanometer box (12) is symmetrically provided with two groups of chain wheel assemblies, the first polar plate (33) and the second polar plate (34) are fixedly arranged on the top of the outer cavity of the galvanometer box (12) from top to bottom, the first polar plate (33) and the second polar plate (34) both have a symmetrical U-shaped structure, and the longitudinal and transverse connecting parts are both arc segments, the floating plate is connected between the first polar plate (33) and the second polar plate (34) through springs, and the floating plate is intermittently arranged; a second sliding groove (39) is formed in the floating plate, two foot rods (27) are symmetrically arranged in the second sliding groove (39), one end of the foot rod (27) is slidably installed in the second sliding groove (39), the other end of the foot rod (27) is slidably installed in the sliding rail (22), a guide sleeve (42) is slidably arranged on the foot rod (27), and the outer side of the guide sleeve (42) is connected with the chain of the chain wheel assembly through a cross rod; when the galvanometer box (12) is inclined, the floating plate contacts the first polar plate (33) or the second polar 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) near the end part are provided with conductive contacts, and the conductive contacts on the floating plate (35, 36, 37) correspond to the conductive contacts on the lower end surface of the first polar plate (33) and the upper end surface of the second polar plate (34); When the galvanometer box (12) is inclined relative to the operation table (15) in the extension direction of the first floating plate (35), the two foot rods (27) move in opposite directions, the conductive contacts of the first floating plate (35) are in communication with the paired conductive contacts on the polar plates (33, 34), the worm motor (20) is powered to rotate, thereby driving the galvanometer box (12) to rotate in the direction opposite to the inclination in the extension direction of the first floating plate (35), and when the galvanometer box (12) is adjusted to be parallel to the operation table (15), the first floating plate (35) is parallel to the polar plates (33, 34), the conductive contacts are disconnected, and the worm motor (20) is stopped; When the galvanometer box (12) is inclined relative to the operation table (15) in a direction perpendicular to the first floating plate (35), the two foot rods (27) move along the floating plates (36, 37), the conductive contacts on the floating plates (36, 37) are in communication with the paired conductive contacts on the polar plates (33, 34), the electric cylinder (26) is powered to extend and contract, thereby driving the galvanometer box (12) to rotate in the direction opposite to the inclination in the direction perpendicular to the first floating plate (35), and when the galvanometer box (12) is adjusted to be parallel to the operation table (15), the floating plates (36, 37) are parallel to the polar plates (33, 34), the conductive contacts are disconnected, and the electric cylinder (26) is stopped.

2. The assist-to-focus type laser marker according to claim 1, characterized by, The foot rod (27) comprises a first rod body (48) and a second rod body (49), the bottom end of the first rod body (48) is fixedly connected with one end of the sleeve (31), the other end of the sleeve (31) is provided with an external thread and is provided with a gap at intervals, the sleeve (31) is tightly connected with the top of the second rod body (49) through a conical nut (32); the top end of the first rod body (48) is provided with a take-off disc (40), the take-off disc (40) is slidingly installed in the second sliding groove (39), and the bottom end of the second rod body (49) is provided with a bottom touch disc (30), the bottom touch disc (30) is slidingly installed in the first sliding groove (29).

3. The assist-to-focus type laser marker according to claim 1, characterized by, 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 axis direction of the beam expander (14), the second floating plate (36) and the third floating plate (37) are respectively located on the two sides of the first floating plate (35) and are symmetrically arranged; the end portions of the first floating plate (35), the second floating plate (36) and the third floating plate (37) are elastically connected with the first polar plate (33) and the second polar plate (34) through springs; T-shaped grooves are formed in the first floating plate (35), the second floating plate (36) and the third floating plate (37), and the three T-shaped grooves form a second sliding groove (39), and the take-off disc (40) is slidingly installed in the second sliding groove (39).

4. The assist-to-focus type laser marker according to claim 3, characterized by A limiting groove is formed in the second polar plate (34), an arc-shaped groove is formed in the arc-shaped section of the longitudinal and transverse connection of the second polar plate (34), the limiting groove and the arc-shaped groove are communicated 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 focus-assisted laser marking machine according to claim 1, wherein, The chain wheel assembly comprises a chain wheel motor (17), a chain (45) at the top end of the galvanometer box (12), a chain wheel (43) and an auxiliary chain wheel (50), the chain wheel motor (17) is fixedly installed at the top of the shell (38), the output end of the chain wheel motor (17) is connected with a chain wheel shaft (44), one end of the chain wheel shaft (44) extends into the shell (38) and is fixedly installed with the chain wheel (43), the other end of the chain wheel shaft (44) is installed on the top of the galvanometer box (12) through a bearing seat, the chain wheel (43) is installed with the chain (45) through two auxiliary chain wheels (50), and the chain (45) is arranged close to the floating plate.

6. The focus-assisted laser marking machine according to claim 3, wherein, The T-shaped groove openings at the end portions of the first floating plate (35), the second floating plate (36) and the third floating plate (37) are all provided with outwardly expanded trumpet mouths.

7. The focus-assisted laser marking machine according to claim 1, wherein A guide groove is formed in the operation table (15), the guide groove is downwardly deepened and the deepened part extends to the two sides to converge into a T shape, forming a first sliding groove (29), and the bottom touch disc (30) is slidingly installed in the first sliding groove (29).

8. The assisted focus type laser marking machine according to claim 7, characterized in that, A first rod inlet (28) is formed in the sliding rail (22); and a second rod inlet (41) is formed in the second polar plate (34).

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