CN217193294U - Marking device with automatic focusing mechanism - Google Patents

Abstract

The utility model discloses a marking device with automatic focusing mechanism, include: marking equipment body: the marking device comprises a marking device body, a positioning mechanism, a marking mechanism and a marking mechanism, wherein the inner cavity of the marking device body is of a closed structure, the positioning mechanism is provided with a reference block, the position of the reference block is changed along with the size of an object to be marked, and the height of the reference block is the same as that of the object to be marked; an automatic focusing mechanism: the laser ranging device comprises a universal moving mechanism, a laser marking head and a laser ranging sensor, wherein the universal moving mechanism drives a sensing path of the laser ranging sensor to be vertically aligned with a reference block. The automatic focusing mechanism adopts a reference block meeting the requirements of the laser ranging sensor to replace a part to be marked and the laser ranging sensor to align the part to be marked and the laser ranging sensor so as to reduce the requirements of the laser ranging sensor on the object to be up to the standard; the utility model adopts a universal moving mechanism to realize the omnidirectional position adjustment of the laser marking head; the inner cavity of the marking device is set to be of a closed structure, so that the physical health of operators of the marking device can be better protected.

Description

Marking device with automatic focusing mechanism

Technical Field

The utility model relates to a marking device's technical field, concretely relates to marking device with auto focus mechanism.

Background

The marking machine is a generalized concept and mainly comprises three types of pneumatics, lasers and electro-corrosion, wherein the three types are as follows: computer control, the printing needle is high frequency impact motion under the compressed air effect to print out the mark that has certain degree of depth on the work piece, mark characteristics: has larger depth; laser marking machines are used to permanently mark the surface of various materials with a laser beam. The marking effect is that the evaporation of the surface layer material exposes the deep layer material, thereby carving exquisite patterns, trademarks and characters; the electrocorrosion mainly prints fixed and unchangeable trademarks just like stamping, but the printing content is changed inconveniently.

The existing marking device still has the following defects:

firstly, the existing laser ranging sensor has certain requirements on an object to be marked, such as the surface roughness of the part to be marked, diffuse reflection needs to be formed for measurement, if the surface of the object is a mirror surface, a probe with a special model needs to be used, and meanwhile, the angle of the laser ranging sensor needs to be adjusted according to actual requirements, which is very troublesome;

secondly, the existing laser marking head moving structure cannot realize universal movement, can only carry out position adjustment in the horizontal direction on the horizontal plane, has a common adjusting effect, and cannot realize accurate alignment of a laser displacement sensor and a reference block on a laser marking head; a

Thirdly, current marking device is mostly open body structure, and it can produce a large amount of fine dusts in marking process, and operating personnel inhales these fine dusts for a long time, very easily produces the disease of respiratory tract position.

Therefore, the marking device with the automatic focusing mechanism is provided to solve the problems of the marking device.

SUMMERY OF THE UTILITY MODEL

In view of the problems existing in the prior art, the utility model provides a marking device with an automatic focusing mechanism, which adopts a reference block meeting the requirements of a laser ranging sensor to replace a part to be marked and the laser ranging sensor to the part, thereby reducing the requirements of the laser ranging sensor on the object to be reached to standard, and the reference block can automatically change positions along with the different sizes of the object to be marked so as to adapt to the objects to be marked with different sizes; the utility model adopts the universal moving mechanism to dispatch the position of the laser marking head so as to realize the omnidirectional position adjustment of the laser marking head; simultaneously, marking device's inner chamber sets up to the enclosed construction to the condition that fine dust scatters marking device's inner chamber takes place in the reduction marking device inner chamber, with the healthy of better protection marking device operating personnel.

In order to realize the above purpose, the utility model discloses a marking device with auto focus mechanism, include:

marking equipment body: the marking device comprises a marking device body, a marking mechanism and a marking mechanism, wherein the inner cavity of the marking device body is of a closed structure, a public platform is arranged in the inner cavity, a positioning mechanism is arranged on the table top of the public platform, an object to be marked is fixed on the positioning mechanism, a reference block which changes positions along with the fact that the size of the object to be marked is different is arranged on the positioning mechanism, and the height of the reference block is the same as that of the object to be marked;

an automatic focusing mechanism: contain universal moving mechanism, laser marking head and laser range finding sensor, but laser marking head rigid coupling is realized reducing circumference action and elevating movement on universal moving mechanism's removal frame and follow-up moving frame under universal moving mechanism's drive, and universal moving mechanism and removal frame drive laser range finding sensor's sensing route and reference block plumb are to it, laser range finding sensor and laser marking head's horizontal spacing and reference block and wait to mark the horizontal spacing of target the same.

As a further optimization of the above scheme, the positioning mechanism includes an upper housing and a lower housing that are fastened to each other, a placing groove for marking the object to be marked is left on the lower housing, and a vertical projection of the placing hole and the placing groove is provided on the upper housing and is located in the vertical projection of the placing hole, two side walls of the placing groove are located in an inner cavity of the placing hole, one side wall of the inner cavity is a fixed structure, the other side wall of the inner cavity is a sliding fit structure with the bottom of the placing groove, the side wall is an inner side facing the one side of the placing groove, the reference block is fixedly connected to the outer side of the side wall, which is a sliding fit structure with the bottom of the placing groove, of the inner side facing the one end of the side wall, which is a sliding fit structure, of the object to be marked, is fixedly connected to an inner baffle and the inner baffle is fixedly connected to the side wall, which is a sliding fit structure with the bottom of the side wall. Consider that traditional positioning mechanism adopts simple and easy supporting platform to place and can't satisfy more the utility model discloses well reference block is along waiting to beat the demand of the different automatic transposition positions of size of mark article, the utility model discloses ingenious sets up positioning mechanism into split type structure, the interior baffle restriction is waited to detect the size that the article was placed the direction along waiting to detect the article, and the variable width's of sliding connection's lateral wall and rigid coupling standing groove, because the reference block rigid coupling is on sliding connection's lateral wall, make the reference block can be along waiting to detect the transform of article width and the change position, because laser displacement sensor follow-up reference block removes, thereby can realize that laser marking head follows up waiting to detect the article of different width and change and beat the mark position, and then optimized the actual mark effect of beating of laser marking head, make the mark work of beating of laser marking head rationalize more.

As a further optimization of the scheme, two groups of clamping components which are symmetrical in position and are composed of clamping blocks and clamping grooves are arranged between the upper shell and the lower shell, each clamping block comprises a convex block extending downwards along the top wall of the upper shell, a transverse plate extending outwards along the outer wall of each convex block and a vertical plate extending downwards along the overhanging end of each transverse plate, each convex block, each transverse plate and each vertical plate form an 'h' -shaped structure, and each clamping groove of each clamping groove is of a 'W' -shaped structure and is clamped with each convex block and each vertical plate. The clamping block adopts a special 'h' -shaped structure to match with the clamping groove of the 'W' -shaped structure to realize the clamping purpose, so that the clamping of the upper shell and the lower shell is more stable.

As a further optimization of the above scheme, the side wall includes a lower plate body with one end fixedly connected or slidably connected to the bottom of the placing groove, and a sliding plate fixedly connected to the upper surface of the lower plate body, the sliding plate is sleeved with an upper plate body, the lower plate surface of the upper plate body is provided with a sliding groove, the sliding groove is in sliding fit with the sliding plate, and the upper plate surface of the upper plate body is fixedly connected with a hook plate capable of hooking the upper surface of the object to be marked. Through designing into the lateral wall has the slip extending structure that upper plate body, slide and lower plate body constitute to it can conveniently collude the top surface of establishing at the article of waiting to beat the mark article to collude the board, so that better will wait to beat the inside of mark part rigid coupling at the standing groove.

As a further optimization of the scheme, the two sides of the sliding plate are provided with spring columns which are fixedly connected between the upper plate body and the lower plate body. Due to the arrangement of the spring column structure, the upper plate body can have certain resilience force in the telescopic process, so that the hook plate can be used for better hooking an object to be marked.

As a further optimization of the above scheme, the universal moving mechanism includes a rotating unit, a housing and a pushing unit, the top surface of the rotating unit is fixedly connected with the housing with one side being open, the open side faces the moving frame, a lead screw is arranged in the housing cavity in a penetrating manner, the input end of the lead screw is connected with a second driving motor, the lead screw is provided with a moving block capable of vertically moving along the lead screw, the outer end of the moving block is fixedly connected with the pushing unit, and the moving frame is fixedly connected to a pushing rod of the pushing unit. Specifically, the moving frame can realize the position change of the moving frame in the vertical direction through a lifting unit consisting of a vertical lead screw, a first driving motor and a moving block; and then, the universal position change of the moving frame in the horizontal direction is realized by matching with the variable-diameter rotating action formed by the rotating unit and the pushing unit, so that the reference block and the plumb of the sensing path of the laser displacement sensor are accurately aligned to the universal moving structure in an auxiliary universal moving structure.

As the further optimization of above-mentioned scheme, the rotation unit contains to rotate the pivot of connection on marking device inner chamber diapire, and the input of pivot is connected with a driving motor and the top gyration of pivot is connected with the carousel and the casing rigid coupling is on the carousel.

As a further optimization of the scheme, one side of the inner cavity of the marking device is provided with a vertical sealing door, the other side of the inner cavity of the marking device is provided with an air suction port, the air suction port is located on an extending surface of a path where an object to be marked runs, and the outer side of the air suction port is connected with a laser smoke purifier through a connecting pipeline. For better protection operating personnel's is healthy, the utility model discloses not only set up marking device's inner chamber into enclosed construction to a laser smoke purifier has been connected in the marking device outside, in order to ensure to clean the produced fine dust of marking device marking in-process, reduce the influence of fine dust to operating personnel health.

According to the scheme, the supporting frame is arranged on the air suction path of the air suction port and the positioning mechanism, the bamboo joint air suction pipe is arranged on the supporting frame, the wide end of the bamboo joint air suction pipe faces towards the part to be detected, and the lower edge of the bamboo joint air suction pipe is higher than the upper edge of the inner baffle. Due to the fact that the bamboo joint air suction pipe is of the wide-mouth-shaped structure on one side facing the marking working direction, fine dust generated by marking can be better transmitted to the laser smoke purifier.

The utility model discloses a marking device with automatic focusing mechanism possesses following beneficial effect:

1) the utility model discloses a marking device with automatic focusing mechanism, the different automatic transposition positions of size of mark article can be waited to follow to the benchmark piece among this automatic focusing mechanism to adapt to not unidimensional mark article of waiting, and then at the in-process of benchmark piece transposition position, universal moving mechanism drives the benchmark piece and carries out universal removal, and make the quick plumb of benchmark piece and laser displacement sensor's sensing route to it, thereby the automatic purpose of waiting laser to beat the change of mark size and focusing that accompanies.

2) Consider that traditional positioning mechanism adopts simple and easy supporting platform to place and can't satisfy more the utility model discloses well reference block is along waiting to beat the demand of the different automatic transposition positions of size of mark article, the utility model discloses ingenious sets up positioning mechanism into split type structure, the interior baffle restriction is waited to detect the size that article placed the direction along waiting to detect the article, and the variable width's of sliding connection's lateral wall and rigid coupling lateral wall constitution standing groove, because the reference block rigid coupling is on sliding connection's lateral wall, make the reference block can be along waiting to detect the transform and the change position of article width, because laser displacement sensor moves along with the reference block, thereby can realize that laser marking head follows along with waiting to detect the article of different width and change and beat the mark position, and then optimized the actual mark effect of beating the mark of laser marking head, make the mark work of beating of laser marking head more rationalize.

3) For the universal moving mechanism in the utility model, the vertical direction position change of the moving frame can be realized through the lifting unit consisting of the vertical lead screw, the first driving motor and the moving block; and the universal position change of the moving frame in the horizontal direction is realized by matching with the variable-diameter rotating action formed by the rotating unit and the pushing unit, so that the plumb alignment of the reference block and the sensing path of the laser displacement sensor is realized accurately.

4) For better protection operating personnel's is healthy, the utility model discloses not only set up marking device's inner chamber into enclosed construction to a laser smoke purifier has been connected in the marking device outside, in order to ensure to remove the produced fine dust of marking device marking in-process, reduces the influence of fine dust to operating personnel health.

5) Furthermore, the bamboo joint air suction pipe is arranged, and one side of the bamboo joint air suction pipe facing to the marking working direction is of a wide-mouth-shaped structure, so that fine dust generated by marking can be better transferred to the laser smoke purifier.

There have been disclosed in detail certain embodiments of the invention with reference to the following description and drawings, and it is to be understood that the embodiments of the invention are not limited thereby, since the embodiments of the invention may include many variations, modifications, and equivalents within the spirit and scope of the appended claims.

Drawings

FIG. 1 is a schematic overall structure diagram of a marking device with an automatic focusing mechanism;

fig. 2 is a schematic front view of the marking device body of the present invention;

fig. 3 is a schematic front view of the middle housing of the present invention;

FIG. 4 is a schematic side view of the positioning mechanism of the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 4.

In the figure: 1. a marking device body; 2. a positioning mechanism; 3. a reference block; 4. an automatic focusing mechanism; 5. a universal moving mechanism; 6. marking a head by laser; 7. a laser ranging sensor; 8. a laser smoke purifier; 9. a support frame; 11. a common platform; 12. an air suction port; 21. an upper housing; 22. a lower housing; 23. a clamping block; 24. clamping a groove; 31. a lower block body; 32. an upper block body; 51. a movable frame; 52. a rotating unit; 53. a housing; 54. a pushing unit; 91. a bamboo joint air suction pipe; 111. a vertical sealing door; 211. placing holes; 221. a placement groove; 222. a side wall; 223. an inner baffle; 224. a lower plate body; 225. a slide plate; 226. an upper plate body; 227. a chute; 228. hooking the plate; 229. a spring post; 231. a bump; 232. a transverse plate; 233. a vertical plate; 241. a card slot; 521. a rotating shaft; 522. a first drive motor; 523. a turntable; 531. a lead screw; 532. a second drive motor; 533. moving the mass.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail by the embodiments and the accompanying drawings. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.

It is noted that when an element is referred to as being "disposed on," or provided with "another element, it can be directly on, or intervening elements may also be present, when an element is referred to as being" connected, "or coupled to another element, it can be directly on, or coupled to, the other element, or intervening elements may also be present, and that" fixedly coupled "means fixedly coupled or coupled in any number of ways, not intended to be within the scope of the disclosure, and that the terms" vertical, "" horizontal, "" left, "" right, "and the like are used herein for illustrative purposes only and are not intended to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items;

referring to the attached drawings 1-5 of the specification, the utility model provides a technical scheme: a marking apparatus with an auto-focus mechanism, comprising:

marking device body 1: referring to fig. 1 and fig. 2, the method is used for realizing closed marking work; the appearance of the marking device body 1 is of a box structure, the inner cavity of the marking device body 1 is of a closed structure, and a vertical sealing door 111, a positioning mechanism 2, a universal moving mechanism 5 and an air suction port 12 are sequentially arranged in the inner cavity of the marking device body 1 along the placing direction of a mark 6 to be marked by laser; the vertical sealing door 111 adopts a vertical sliding structure; the reference block 3 is arranged on the positioning mechanism 2, the reference block 3 can change positions along with different sizes of the objects to be marked, the reference block 3 is composed of a lower block body 31 and an upper block body 32 which is sleeved on the lower block body 31 in a sliding mode, and the upper block body 32 is fixedly connected with the hook plate 228 through a connecting block so that the upper block body 32 can lift along with the hook plate 228; the laser marking head 6 is arranged on the universal moving mechanism 5 through the moving frame 51; the suction port 12 is arranged on an extension surface of a path of travel of the member to be marked.

The automatic focusing mechanism 4: referring to fig. 2, the device is used for focusing the laser marking head 6 and an object to be marked, so as to better complete the marking work of the laser marking head 6; the laser marking head 6 is fixedly connected to a moving frame 51 of the universal moving mechanism 5, the follow-up moving frame 51 is driven by the universal moving mechanism 5 to realize diameter-variable circular motion and lifting motion, the universal moving mechanism 5 and the moving frame 51 drive a sensing path of the laser ranging sensor 7 to vertically align with the reference block 3, and the laser ranging sensor does not directly mark an object to be marked with laser emitted by the laser sensor when operating.

The working principle of the automatic focusing mechanism 4 is as follows:

after the sensing paths of the laser ranging sensor 7 of the universal moving mechanism 5 and the moving frame 51 are vertically aligned with the reference block 3, laser emitted by the laser ranging sensor 7 is projected on the surface of the reference block 3, and the laser reflected by the reference block 3 is reflected back to the laser ranging sensor 7, so that the ranging of the laser ranging sensor 7 is realized, the laser ranging sensor 7 transmits the measured distance to the controller, and the controller adjusts the position of the laser marking head 6 through the universal moving mechanism 5 according to the difference between the distance and the standard distance, so that the closed-loop control on the height and the focusing operation of the laser are realized, the automation degree of the laser marking device is improved, and the marking work efficiency is increased.

Universal movement mechanism 5: referring to fig. 2 and 3, for the purpose of implementing the gimbaled moving laser marking head 6; comprises a moving frame 51, a pushing unit 54, a rotating unit 52 and a lifting unit, wherein the moving frame 51 is fixedly connected with the laser marking head 6, and the moving frame 51 plays a role of supporting the laser marking head 6; in this embodiment, the pushing unit 54 is an electric telescopic rod, of course, the pushing unit 54 may also be an air cylinder, and the moving frame 51 is fixedly connected to the overhanging end of the electric telescopic rod and generates a horizontal displacement motion along with the telescopic motion of the electric telescopic rod; the rotating unit 52 rotates by adopting a structure of a rotating disc 523, the rotating disc 523 is rotatably connected to the rotating shaft 521, one end of the rotating shaft 521 passes through the bottom wall of the inner cavity of the marking device body 1 and is connected with a first driving motor 522, and the rotating shaft 521 is driven by the first driving motor 522 to generate a rotating action, so that the rotating disc 523 is driven to generate a rotating action; the lifting unit in this embodiment includes a housing 53, a screw 531, a second driving motor 532, and a moving block 533, wherein the housing 53 is fixedly connected to the turntable 523, and further, during the rotation of the turntable 523, the housing 53 follows the turntable 523 to generate a rotation motion centering on the rotating shaft 521, and the screw 531 and the moving block 533 form a screw transmission mechanism, during the operation of the second driving motor 532 driving the screw 531, the moving block 533 can generate a linear motion along the length direction of the screw 531, and because the screw 531 is vertically disposed in the inner cavity of the housing 53, when the screw 531 operates, the moving block 533 substantially generates a vertical lifting motion, and because the pushing unit 54 is fixedly connected to the moving block 533 and located at the opening of the housing 53, the header 54, the moving frame 51, and the laser marker 6 follow the lifting unit to complete the lifting motion. According to the above structure, the utility model discloses in the course of the work, the laser is marked head 6 and can be accomplished the position transform of vertical direction position transform and horizontal direction by follow-up removal frame 51, and wherein the rotation action of the variable footpath that the position transform of horizontal direction constitutes through rotation action and promotion action is realized to accurate plumb with benchmark piece 3 and the 6 sensing paths of laser displacement sensor is to it.

The positioning mechanism 2: referring to fig. 2, 4 and 5, for positioning the heads 6 to be laser-marked of different sizes; the positioning mechanism 2 is arranged on a public platform 11 in an inner cavity of the marking device body 1, the positioning mechanism 2 comprises an upper shell 21 and a lower shell 22 which are buckled with each other, the specific buckling mode is that two groups of clamping components which are symmetrical in position and formed by a clamping block 23 and a clamping groove 24 generate buckling actions, the clamping block 23 is formed by a convex block 231, a transverse plate 232 and a vertical plate 233, the shape of the clamping block is of an h-shaped structure, and the clamping groove 24 is formed by two clamping grooves 241, and the shape of the clamping groove is of a W-shaped structure; the placing hole 211 is formed in the upper shell 21, the placing groove 221 is formed in the lower shell 22, the vertical projection of the placing groove 221 is located in the vertical projection of the placing hole 211, the two side walls 222 are arranged in the inner cavity of the placing hole 211 and form a similar clamping structure, one side wall 222 is fixedly connected, the other side wall 222 is in sliding connection, and one end, facing the placing direction of the object to be marked, of the inner side of the side wall 222 in sliding connection is fixedly connected with the inner baffle 223, so that an "n" -shaped fixing structure is formed by the two side walls 222 and the inner baffle 223, and the mark 6 to be laser marked is better fixed in the fixing structure; preferably, in this embodiment, the side wall 222 includes a lower plate 224, a sliding plate 225, an upper plate 226, a hook plate 228 and a spring column 229, wherein the sliding plate 225 is fixedly connected to the upper plate surface of the lower plate 224; the upper plate 226 is slidably sleeved on the sliding plate 225, specifically, a sliding groove 227 in sliding fit with the sliding plate 225 is formed on the lower plate surface of the upper plate 226; the hook plate 228 is fixedly connected to the upper plate surface of the upper plate 226; a spring post 229 is fixedly secured between the upper plate 226 and the lower plate 224 to provide a pull back force to the upper plate 226 after the upper plate 226 is pulled upward.

The smoke purification mechanism comprises: referring to fig. 1 and 2, the device is used for purifying smoke in an inner cavity of a marking device body 1; the device mainly comprises a support frame 9 fixedly connected on an air suction path of an air suction port 12 and a positioning mechanism 2, a bamboo joint air suction pipe 91 and a laser smoke purifier 8, wherein the bamboo joint air suction pipe 91 is fixedly connected on the support frame 9, the appearance of the bamboo joint air suction pipe 91 is horn-shaped, and the wide-mouth end of the bamboo joint air suction pipe faces to a part to be detected; the laser fume purifier 8 is connected to the air suction port 12 through a connecting pipe.

It should be understood, however, that the intention is not to limit the invention to the particular embodiments described, but to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims (9)

1. The utility model provides a marking device with automatic focusing mechanism which characterized in that includes:

marking device body (1): the marking device comprises a marking device body (1), wherein the inner cavity of the marking device body (1) is of a closed structure, a public platform (11) is arranged in the inner cavity, a positioning mechanism (2) is arranged on the table top of the public platform (11), an object to be marked is fixed on the positioning mechanism (2), a reference block which changes positions along with the different sizes of the object to be marked is arranged on the positioning mechanism (2), and the height of the reference block (3) is the same as that of the object to be marked;

auto-focusing mechanism (4): contain universal moving mechanism (5), laser marking head (6) and laser range finding sensor (7), laser marking head (6) rigid coupling is on the removal frame (51) of universal moving mechanism (5) and follow-up removes frame (51) and realizes the circumference action and the lift action of reducing under the drive of universal moving mechanism (5), and universal moving mechanism (5) and removal frame (51) drive laser range finding sensor's (7) sensing route and benchmark piece (3) are plumbed to it, the horizontal interval of laser range finding sensor (7) and laser marking head (6) is the same with benchmark piece (3) and the horizontal interval of the article of waiting to mark.

2. Marking device with an automatic focusing mechanism according to claim 1, characterized in that: the positioning mechanism (2) comprises an upper shell (21) and a lower shell (22) which are buckled with each other, a placing groove (221) of an object to be marked is reserved on the lower shell (22), a placing hole (211) is formed in the upper shell (21), the vertical projection of the placing groove (221) is located in the vertical projection of the placing hole (211), two side walls (222) of the placing groove (221) are located in an inner cavity of the placing hole (211), one side wall (222) is of a fixed structure, the other side wall (222) and the bottom of the placing groove (221) are of a sliding fit structure, one side, facing the placing groove (221), of the side wall (222) is the inner side, a reference block (3) is fixedly connected to the outer side of the side wall (222) with the bottom of the placing groove (221) being of the sliding fit structure, the inner side wall (222) with the bottom of the placing groove (221) is fixedly connected to one end, facing the placing direction of the object to be marked, an inner baffle (223) and the side wall (222) and the bottom of the groove are of the sliding fit structure Is fixed.

3. Marking device with an automatic focusing mechanism according to claim 2, characterized in that: two clamping assemblies which are symmetrical in position and are composed of clamping blocks (23) and clamping grooves (24) are arranged between the upper shell (21) and the lower shell (22), the clamping blocks (23) comprise convex blocks (231) extending downwards along the top wall of the upper shell (21), transverse plates (232) extending outwards along the outer walls of the convex blocks (231) and vertical plates (233) extending downwards along the overhanging ends of the transverse plates (232), the convex blocks (231), the transverse plates (232) and the vertical plates (233) form an h-shaped structure, the clamping grooves (24) are of a W-shaped structure, and the two clamping grooves (241) in the clamping grooves (24) are respectively clamped with the convex blocks (231) and the vertical plates (233).

4. Marking device with an automatic focusing mechanism according to claim 3, characterized in that: lateral wall (222) contain one end rigid coupling or sliding connection at lower plate body (224) of standing groove (221) tank bottom, sliding plate (225) of face is gone up in lower plate body (224) to the rigid coupling, has cup jointed on sliding plate (225) and has gone up plate body (226), and goes up the lower face of plate body (226) and seted up spout (227) and sliding plate (225) and be sliding fit, the last face rigid coupling of going up plate body (226) has and to collude board (228) of colluding at treating to beat mark article upper surface.

5. Marking device with an automatic focusing mechanism according to claim 4, characterized in that: spring columns (229) are arranged on two sides of the sliding plate (225), and the spring columns (229) are fixedly connected between the upper plate body (226) and the lower plate body (224).

6. Marking device with an automatic focusing mechanism according to claim 5, characterized in that: the universal moving mechanism (5) comprises a rotating unit (52), a shell (53) and a pushing unit (54), wherein the top surface of the rotating unit (52) is fixedly connected with the shell (53) with one side being open, the open side faces to a moving frame (51), a lead screw (531) arranged in a vertical manner is arranged in the inner cavity of the shell (53) in a penetrating mode, the input end of the lead screw (531) is connected with a second driving motor (532), the lead screw (531) is provided with a moving block (533) capable of vertically moving along the lead screw (531), the outer end of the moving block (533) is fixedly connected with the pushing unit (54), and the moving frame (51) is fixedly connected to a pushing rod of the pushing unit (54).

7. Marking device with an automatic focusing mechanism according to claim 6, characterized in that: the rotating unit (52) comprises a rotating shaft (521) which is rotatably connected to the bottom wall of the inner cavity of the marking device body (1), the input end of the rotating shaft (521) is connected with a first driving motor (522), the top end of the rotating shaft (521) is rotatably connected with a rotating disc (523), and the shell (53) is fixedly connected to the rotating disc (523).

8. Marking device with an automatic focusing mechanism according to claim 7, characterized in that: and one side of the inner cavity of the marking equipment body (1) is provided with a vertical sealing door (111), the other side of the inner cavity of the marking equipment body is provided with an air suction port (12), the air suction port (12) is positioned on the extending surface of the advancing path of the object to be marked, and the outer side of the air suction port (12) is connected with a laser smoke purifier (8) through a connecting pipeline.

9. Marking device with an automatic focusing mechanism according to claim 8, characterized in that: a supporting frame (9) is arranged on an air suction path of the air suction port (12) and the positioning mechanism (2), a bamboo joint air suction pipe (91) is arranged on the supporting frame (9), a wide end of the bamboo joint air suction pipe (91) faces towards a part to be detected, and the lower side of the bamboo joint air suction pipe (91) is higher than the upper side of the inner baffle (223).

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