A laser engraving device for cultural and tourism printing templates

Abstract

The present invention relates to the field of laser engraving of printing templates, and specifically to a laser engraving device for cultural and tourism printing templates, which includes a bottom plate. A vertical plate is fixedly installed at the left end of the top of the bottom plate, and a laser engraving machine is installed at the right end of the top of the bottom plate. A positioning unit is connected to the right side of the vertical plate through a multi-stage electric push rod, and a flattening unit is installed on the top of the bottom plate at a position between the positioning unit and the laser engraving machine through an inverted U-shaped frame. The present invention uses a left-pushing element to solve the situation where the shovel plate touches the protrusion. Mainly, the right end of the horizontal section of the L-shaped pushing plate pushes the extension rod, so that the elastic telescopic square rod accumulates elastic force to push the assembly plate to the left. Furthermore, with the blocking effect of the semi-circular protrusion, the shovel plate further overcomes the pushing effect of the protrusion to flatten the protrusion, making the shoveling effect of the shovel plate better, thereby ensuring the flattening effect of the flattening unit and avoiding the situation where the laser engraving accuracy and the integrity of the printed pattern are affected due to the uneven top of the cultural and tourism printing template.

Description

Technical Field

[0001] The present invention relates to the field of laser engraving of printing templates, and specifically to a laser engraving device for cultural and tourism printing templates. Background Art

[0002] Cultural and tourism printing templates generally refer to design templates for promoting cultural and tourism activities, scenic spot introductions, travel guides, etc. These templates can be applied to various printed materials, such as brochures, posters, flyers, tickets, postcards, etc. In actual cultural and tourism printing templates, there is a template as shown in Figure 11 . The top of this template is made of plastic material, and a printed pattern is provided on the top of the plastic material. The bottom of this template is made of hard material.

[0003] The printed pattern on the top of this kind of cultural and tourism printing template is usually processed by a laser engraving machine. Before processing, the unengraved cultural and tourism printing template is placed on the laser engraving machine, and the cultural and tourism printing template is positioned. After positioning is completed, the printed pattern on the top of the cultural and tourism printing template can be engraved by the laser engraving machine.

[0004] Although the above laser engraving method can effectively engrave the top of each cultural and tourism printing template by laser, during the forming process of the plastic material on the top of the cultural and tourism printing template, due to the error of the mold and the insufficient post-polishing treatment, the phenomenon of the top of the cultural and tourism printing template bulging occurs. The above phenomenon is extremely likely to cause the reduction of the laser engraving accuracy, resulting in the missing of the printed pattern. In addition, since the above laser engraving method can only position a single cultural and tourism printing template, when laser engraving multiple cultural and tourism printing templates, each cultural and tourism printing template needs to be repositioned, and the distance between the cultural and tourism printing template and the laser engraving machine needs to be adjusted. The operation is cumbersome and time-consuming. Summary of the Invention

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A laser engraving device for cultural and tourism printing templates, comprising a bottom plate. A vertical plate is fixed to the left end of the top of the bottom plate, and a laser engraving machine is installed at the right end of the top of the bottom plate. A positioning unit is connected to the right side of the vertical plate through a multi-stage electric push rod, and a leveling unit is installed on the top of the bottom plate between the positioning unit and the laser engraving machine through an inverted U-shaped frame; The positioning unit includes an assembly frame fixed to the pushing end of the multi-stage electric push rod. A plurality of positioning grooves for positioning the template are arranged on the top of the assembly frame. The plurality of positioning grooves are horizontally linearly distributed. Multi-directional positioning elements are arranged in the assembly frame corresponding to each positioning groove. The bottoms of all the multi-directional positioning elements are commonly connected to a synchronous control element; A feeding frame is fixed to the top of the bottom plate at its midline position through two L-shaped frames; The leveling unit includes a longitudinal slide rail fixed to the bottom of the longitudinal section of the inverted U-shaped frame. A longitudinal moving block is connected to the longitudinal slide rail through a longitudinal electric slider. A through column symmetrically distributed front and back is slidably penetrated through the middle of the longitudinal moving block. A circular plate is fixed to the right end of each through column. A horizontal spring is connected between the circular plate and the longitudinal moving block. The left ends of the two through columns are commonly fixed to an assembly plate. A leveling element, a cleaning element and a pressing element are sequentially arranged on the bottom of the assembly plate from left to right. A left pushing element is commonly arranged between the assembly plate and the inverted U-shaped frame. The template is leveled by the combination of the leveling element and the pressing element.

[0006] Preferably, the multi-directional positioning element includes a central block arranged at the bottom of the positioning groove and slidably penetrating through the assembly frame. Synchronous positioning structures are arranged on each side of the positioning groove. The template is centered by the synchronous positioning structure, and the heights of all templates are synchronously adjusted by the central block.

[0007] Preferably, the synchronous positioning structure includes a centripetal groove arranged on the side of the positioning groove. An inner slider is slidably connected in the centripetal groove. A vertical groove is opened in the assembly frame at the end of the centripetal groove away from the positioning groove. An L-shaped connecting rod is slidably connected in the vertical groove. A track groove is arranged in the middle of the inner slider and at one end close to the vertical section of the L-shaped connecting rod. A track rod cooperating with the track groove is fixed to the top of the vertical section of the L-shaped connecting rod. One end of the L-shaped connecting rod away from the track rod is fixedly connected to the side of the central block.

[0008] Preferably, the synchronous control element includes a connecting column fixed to the bottom of each central block. A horizontal plate is commonly fixed to the bottoms of all the connecting columns. A rear extension plate is fixed to the rear side of the horizontal plate; An installation plate is fixed to the rear side of the assembly frame. A cylinder is installed at the bottom of the installation plate. The telescopic end of the cylinder is connected to the top of the rear extension plate.

[0009] Preferably, the leveling element includes a shovel plate hinged to the bottom of the assembly plate. A positioning plate is fixed to the bottom of the assembly plate and in front of the shovel plate. A plurality of positioning holes are evenly arranged circumferentially on the right side of the shovel plate. A counterpoint hole is opened on the positioning plate. A positioning pin is connected between the positioning hole and the corresponding counterpoint hole.

[0010] Preferably, the cleaning element includes a longitudinal brush plate fixed to the bottom of the collecting plate. Rotating brush blocks are symmetrically hinged to the front and rear sides of the longitudinal brush plate at the bottom of the collecting plate. Avoidance grooves are formed in the bottom of the collecting plate above the rotating brush blocks. A pushed plate is fixed to the top of the rotating brush block; on the left side surfaces of the two vertical sections of the inverted U-shaped frame, left extension plates are fixed. On the opposite side surfaces of the left ends of the two left extension plates, pushing blocks for pushing the pushed plate are connected through elastic telescopic rods.

[0011] Preferably, the pressing element includes a receiving groove formed in the bottom of the collecting plate. A pressing block is connected to the top of the receiving groove through a vertical elastic rod. A vertical column slidably penetrates through the middle of the collecting plate on the right side of the receiving groove. An installation frame is fixed to the bottom of the vertical column. A pressing roller is installed on the installation frame. A downward pressing structure is jointly provided on the vertical column and the top of the longitudinal section of the inverted U-shaped frame.

[0012] Preferably, the downward pressing structure includes a connecting plate fixed to the left side surface of the vertical column. A compression spring is connected between the connecting plate and the collecting plate; a longitudinal sliding groove is provided at the top of the longitudinal section of the inverted U-shaped frame. A positioning column is connected through a trapezoidal slider in the longitudinal sliding groove. A positioning sleeve is sleeved on the positioning column. A left extension rod is fixed to the left side surface of the positioning sleeve. The left extension rod abuts against the top of the vertical column. A semi-circular protrusion is fixed to the bottom of the left extension rod on the right side of the vertical column. A locking member for position locking is provided on the positioning sleeve and the positioning column.

[0013] Preferably, the locking member includes a plurality of locking holes vertically and linearly and evenly formed in the middle of the positioning column. A coordination hole is provided in the middle of the positioning sleeve. A horizontal pin is connected between the coordination hole and the corresponding locking hole.

[0014] Preferably, the left pushing element includes elastic telescopic square rods symmetrically hinged to the top of the collecting plate in the front and rear. An extension rod is fixed to the end of the square elastic telescopic rod away from the collecting plate. The left end of the extension rod is hinged to the top of the trapezoidal slider; an L-shaped pushing plate is fixed to the top of the collecting plate. The right end of the horizontal section of the L-shaped pushing plate can push the extension rod so that the elastic telescopic square rod pushes the collecting plate to the left.

[0015] The beneficial effects of the present invention are as follows: First, the present invention uses a left pushing element to solve the situation where the shoveling plate abuts against the protrusion. It mainly pushes the extension rod through the right end of the horizontal section of the L-shaped pushing plate, so that the elastic force accumulated by the elastic telescopic square rod pushes the collecting plate to the left. Furthermore, with the blocking effect of the semi-circular protrusion, the shoveling plate further overcomes the pushing action of the protrusion to shovel the protrusion flat, making the shoveling effect of the shoveling plate better, thereby ensuring the leveling effect of the leveling unit and avoiding the situation where the laser engraving accuracy and the integrity of the printed pattern are affected due to the uneven top of the cultural and tourism printing template.

[0016] Second, the present invention levels, presses, and rolls the top of the cultural and tourism printing template through a scraping plate, a pressing block, and a pressing roller respectively, so as to ensure the flatness of the top of the cultural and tourism printing template. Among them, the scraping plate can adjust its own rotation angle through a positioning disk to adapt to cultural and tourism printing templates of different sizes. At the same time, the height of the pressing roller can be adjusted through a positioning column and a positioning sleeve, so that the pressing roller adapts to cultural and tourism printing templates of different heights, thereby further improving the applicability of the present invention.

[0017] Third, the present invention performs simultaneous central positioning on multiple cultural and tourism printing templates through a synchronous positioning structure, and synchronously adjusts the heights of all templates through a central block, so as to ensure that the heights of all positioned cultural and tourism printing templates are the same. And by the way of using a synchronous control element to control a multi-directional positioning element for positioning, the positions of all cultural and tourism printing templates relative to the positioning groove can be the same, which is convenient for the continuous processing of a laser engraving machine and improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 is a schematic structural diagram of the present invention.

[0020] Figure 2 is a schematic structural diagram of the first perspective of the positioning unit in the present invention.

[0021] Figure 3 is a schematic structural diagram of the second perspective of the positioning unit in the present invention.

[0022] Figure 4 is a partial cross-sectional view of the positioning unit in the present invention.

[0023] Figure 5 is a schematic structural diagram of the first perspective of the laser engraving machine and the leveling unit in the present invention.

[0024] Figure 6 is a partial structural diagram of the leveling unit in the present invention.

[0025] Figure 7 is Figure 6 an enlarged view of part A in

[0026] Figure 8 is a schematic structural diagram of the first perspective of the leveling unit in the present invention.

[0027] Figure 9 is a schematic structural diagram of the second perspective of the leveling unit in the present invention.

[0028] Figure 10 is a front partial cross-sectional view of the leveling unit in the present invention.

[0029] Figure 11It is a schematic structural diagram of a cultural and tourism printing template.

[0030] In the figure: 1. Bottom plate; 11. Vertical plate; 111. Multi-stage electric push rod; 12. Inverted U-shaped frame; 13. L-shaped frame; 131. Feeding frame; 2. Laser engraving machine; 3. Positioning unit; 31. Assembly frame; 311. Positioning groove; 32. Multi-directional positioning element; 321. Central block; 322. Inner slider; 323. Vertical groove; 324. L-shaped connecting rod; 325. Trajectory rod; 33. Synchronous control element; 331. Connecting column; 332. Horizontal plate; 333. Rear extension plate; 334. Mounting plate; 335. Cylinder; 4. Flattening unit; 41. Longitudinal slide rail; 411. Longitudinal moving block; 412. Through column; 413. Circular plate; 414. Assembly plate; 42. Flattening element; 421. Flattening plate; 422. Positioning plate; 423. Positioning hole; 43. Cleaning element; 431. Longitudinal brush plate; 432. Rotating brush block; 433. Pushed plate; 434. Left extension plate; 435. Pushing block; 44. Pressing element; 441. Accommodating groove; 442. Pressing block; 443. Vertical column; 444. Mounting frame; 445. Pressing roller; 446. Connecting plate; 447. Positioning column; 448. Positioning sleeve; 449. Left extension rod; 45. Left pushing element; 451. Elastic telescopic square rod; 452. Extension rod; 453. L-shaped pushing plate; 460. Semi-circular protrusion; 461. Horizontal pin. Specific implementation mode

[0031] The embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. For those not specified in the embodiments in terms of specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in the field or according to the product instructions.

[0032] Refer to Figure 1 , a laser engraving device for a cultural and tourism printing template, including a bottom plate 1. A vertical plate 11 is fixed to the left end of the top of the bottom plate 1. A laser engraving machine 2 is installed at the right end of the top of the bottom plate 1. A positioning unit 3 is connected to the right side of the vertical plate 11 through a multi-stage electric push rod 111. A flattening unit 4 is installed on the top of the bottom plate 1 between the positioning unit 3 and the laser engraving machine 2 through an inverted U-shaped frame 12; two L-shaped frames 13 are fixed to the top of the bottom plate 1 at its middle line position to form a feeding frame 131.

[0033] The present invention positions multiple cultural and tourism printing templates through the positioning unit 3, and sequentially flattens the tops of the positioned cultural and tourism printing templates with the flattening unit 4, so as to ensure the flatness of the tops of the cultural and tourism printing templates, and further ensure the engraving quality of the tops of the cultural and tourism printing templates by the laser engraving machine 2, and avoid the situation of poor engraving accuracy due to the uneven top of the cultural and tourism printing template.

[0034] Specifically, first, the cultural and tourism printing templates to be laser engraved are sequentially placed into the feeding frame 131. Subsequently, the multi-stage electric push rod 111 is controlled to drive the positioning unit 3 to move to the right. After all the cultural and tourism printing templates enter the positioning unit 3, the positioning unit 3 is controlled to position the cultural and tourism printing templates. After the positioning of the cultural and tourism printing templates is completed, the flattening unit 4 is controlled to sequentially flatten the tops of the cultural and tourism printing templates. After the flattening process is completed, the positioning unit 3 will be pushed by the multi-stage electric push rod 111 to below the laser engraving machine 2. Subsequently, the laser engraving machine 2 is controlled to sequentially perform laser engraving on each cultural and tourism printing template. After the laser engraving of the cultural and tourism printing templates is completed, the positioning unit 3 is controlled to release the positioning. Then, the operator sequentially takes out the cultural and tourism printing templates and performs subsequent processing.

[0035] Refer to Figures 1 - 3 Figures 1 - 3

[0036] The positioning unit 3 is used to sequentially load the cultural and tourism printing templates, and cooperate with the feeding frame 131 to achieve automatic blanking. At the same time, the multi-directional positioning elements 32 cooperate with the synchronous control element 33 to achieve the purpose of accurately positioning all the cultural and tourism printing templates simultaneously. After the positioning is completed, it can ensure that the heights of all the cultural and tourism printing templates are the same, which is convenient for subsequent flattening processing and makes the laser engraving effect and accuracy better.

[0037] Specifically, first, the cultural and tourism printing templates to be laser engraved are sequentially placed into the feeding frame 131, and the number of the cultural and tourism printing templates is the same as the number of the positioning slots 311. At this time, the lowermost cultural and tourism printing template will first fall into the rightmost positioning slot 311. Subsequently, the multi-stage electric push rod 111 is controlled to push the assembly frame 31 to the right. During the process of the assembly frame 31 moving to the right, the cultural and tourism printing templates in the feeding frame 131 will sequentially fall into the positioning slots 311. After there is a cultural and tourism printing template in each positioning slot 311, the synchronous control element 33 is controlled to drive all the multi-directional positioning elements 32 to position each cultural and tourism printing template.

[0038] Refer to Figures 2 - 4, the multi-directional positioning element 32 includes a central block 321 disposed at the bottom of the positioning groove 311 and sliding through the center of the assembly box 31. Synchronous positioning structures are provided on each side of the positioning groove 311. The synchronous positioning structure includes a centripetal groove provided on the side of the positioning groove 311. An inner slider 322 is slidably connected in the centripetal groove. A vertical groove 323 is formed in the assembly box 31 at one end of the centripetal groove away from the positioning groove 311. An L-shaped connecting rod 324 is slidably connected in the vertical groove 323. A track groove is provided in the middle of the inner slider 322 and at one end close to the vertical section of the L-shaped connecting rod 324. The left and right opposite track grooves are in an inverted V shape, and the front and back opposite track grooves are also in an inverted V shape. A track rod 325 matching the track groove is fixed at the top of the vertical section of the L-shaped connecting rod 324. One end of the L-shaped connecting rod 324 away from the track rod 325 is fixedly connected to the side of the central block 321.

[0039] Continue to refer to Figures 2 - 4 , the synchronous control element 33 includes connecting columns 331 fixed to the bottom of each central block 321. A horizontal plate 332 is commonly fixed to the bottoms of all the connecting columns 331. A rear extension plate 333 is fixed to the rear side of the horizontal plate 332. An installation plate 334 is fixed to the rear side of the assembly box 31. A cylinder 335 is installed at the bottom of the installation plate 334. The telescopic end of the cylinder 335 is connected to the top of the rear extension plate 333.

[0040] The center positioning of the cultural and tourism printing template is performed through the synchronous positioning structure, and the heights of all the templates are synchronously adjusted through the central block 321, so as to ensure that the heights of all the positioned cultural and tourism printing templates are the same. And in the way that the synchronous control element 33 controls the multi-directional positioning element 32 for positioning, it can make the positions of all the cultural and tourism printing templates relative to the positioning groove 311 the same, thereby facilitating the laser engraving machine 2 to quickly and repeatedly perform laser engraving on all the cultural and tourism printing templates.

[0041] Specifically, control the multi-stage electric push rod 111 to drive the assembly box 31 to move to the right. After the cultural and tourism printing templates fall into the positioning groove 311 in sequence, then control the cylinder 335 to push the rear extension plate 333, so that the rear extension plate 333 drives the horizontal plate 332 and all the central blocks 321 to move downward. After the central block 321 moves downward, it will drive all the L-shaped connecting rods 324 to move downward synchronously, and push the inclined surface at the bottom of the track groove through the track rod 325, so that the inner slider 322 synchronously moves towards the cultural and tourism printing template in the positioning groove 311, and then the inner slider 322 presses against the cultural and tourism printing template and positions it.

[0042] Refer to Figure 5 、 Figure 6 、 Figure 8 and Figure 9, the leveling unit 4 includes a longitudinal slide rail 41 fixed to the bottom of the longitudinal section of the inverted U-shaped frame 12. A longitudinal moving block 411 is connected to the longitudinal slide rail 41 through a longitudinal electric slider. A through column 412 symmetrically distributed front and back penetrates through the middle of the longitudinal moving block 411. A circular plate 413 is fixed to the right end of each through column 412. A horizontal spring is connected between the circular plate 413 and the longitudinal moving block 411. The left ends of the two through columns 412 are jointly fixed with a collecting plate 414. A leveling element 42, a cleaning element 43, and a pressing element 44 are sequentially arranged at the bottom of the collecting plate 414 from left to right. A left pushing element 45 is jointly arranged between the collecting plate 414 and the inverted U-shaped frame 12. The template is leveled by the combination of the leveling element 42 and the pressing element 44.

[0043] The leveling unit 4 is used to level the top of the cultural and tourism printing template, so that the tops of all cultural and tourism printing templates are flat, thereby avoiding the situation of poor laser engraving accuracy, and further enabling the distances of all cultural and tourism printing templates from the laser engraving machine 2 to be the same, so that the quality of laser engraving for each cultural and tourism printing template is the same. At the same time, the left pushing element 45 is used to push the whole leveling unit 4 to the left, so that the leveling element 42 can level the top bulge and overcome the resistance generated by the bulge.

[0044] Refer to Figures 5 - 7 , the leveling element 42 includes a shovel plate 421 hinged to the bottom of the collecting plate 414. A positioning plate 422 is fixed to the bottom of the collecting plate 414 and on the front side of the shovel plate 421. A plurality of positioning holes 423 are evenly arranged circumferentially on the right side of the shovel plate 421. A counterpoint hole is opened on the positioning plate 422, and a positioning pin is connected between the positioning hole 423 and the corresponding counterpoint hole.

[0045] Refer to Figure 6 、 Figure 8 and Figure 9 , the cleaning element 43 includes a longitudinal brush plate 431 fixed to the bottom of the collecting plate 414. Rotating brush blocks 432 are symmetrically hinged to the front and back sides of the longitudinal brush plate 431 at the bottom of the collecting plate 414. Avoidance grooves are opened at the bottom of the collecting plate 414 and above the rotating brush blocks 432. A pushed plate 433 is fixed to the top of the rotating brush block 432; Left extension plates 434 are fixed to the left side surfaces of the two vertical sections of the inverted U-shaped frame 12. Pushing blocks 435 for pushing the pushed plate 433 are connected to the opposite side surfaces of the left ends of the two left extension plates 434 through elastic telescopic rods.

[0046] The top of the cultural and tourism printing template is leveled by the leveling element 42, and the plastic material removed by the leveling element 42 is cleaned by the cleaning element 43, so that the top of the cultural and tourism printing template is flat and free of debris, which is convenient for subsequent leveling treatment of the top of the cultural and tourism printing template, and can ensure the quality of laser engraving on the top of the cultural and tourism printing template. The pushing block 435 in the cleaning element 43 can push the pushed plate 433 to drive the rotating brush block 432 to rotate, so as to completely remove the excess plastic material swept out from the top of the cultural and tourism printing template.

[0047] Specifically, before laser engraving the cultural and tourism printing template, first adjust the rotation angle of the shovel plate 421 according to the size of the cultural and tourism printing template. Remove the positioning pin and rotate the shovel plate 421. After rotation, reinstall the positioning pin between the positioning hole 423 and the corresponding alignment hole. When the multi-stage electric push rod 111 pushes the assembly frame 31 to the right, first control the electric slider to drive the longitudinal moving block 411 to move back and forth. Since the size of the shovel plate 421 is larger than the size of the cultural and tourism printing template, the convex part of the plastic material on the top of the cultural and tourism printing template is continuously removed during the back-and-forth movement of the shovel plate 421. After the removal is completed, due to the longitudinal reciprocating movement of the longitudinal moving block 411, the assembly plate 414 moves back and forth synchronously, thereby driving the longitudinal brush plate 431 and the rotating brush block 432 to move back and forth. When the pushing block 435 contacts the pushed plate 433, the pushing block 435 pushes the pushed plate 433 to drive the rotating brush block 432 to rotate outwards from the assembly plate 414, so as to dial out the plastic material removed by the shovel plate 421. The remaining plastic material removed on the top of the cultural and tourism printing template is pushed to the left as a whole by the longitudinal brush plate 431. When the cultural and tourism printing template moves to the right and separates from the longitudinal brush plate 431, the remaining plastic material removed on the top of the cultural and tourism printing template will fall from the left side of the cultural and tourism printing template.

[0048] Refer to Figures 8 - 10 As shown in, the pressing element 44 includes a receiving groove 441 opened at the bottom of the assembly plate 414. The top of the receiving groove 441 is connected to a pressing block 442 through a vertical elastic rod. A vertical column 443 slides through the middle of the assembly plate 414 and on the right side of the receiving groove 441. The bottom of the vertical column 443 is fixed with a mounting frame 444. A pressing roller 445 is mounted on the mounting frame 444. A pressing structure is jointly arranged on the vertical column 443 and the top of the longitudinal section of the inverted U-shaped frame 12.

[0049] The pressing-down structure includes a connecting plate 446 fixed to the left side of the vertical column 443. A compression spring is connected between the connecting plate 446 and the collecting plate 414. At the top of the longitudinal section of the inverted U-shaped frame 12, a longitudinal sliding groove is provided. A positioning column 447 is connected in the longitudinal sliding groove through a trapezoidal slider. A positioning sleeve 448 is sleeved on the positioning column 447. A left extension rod 449 is fixed to the left side surface of the positioning sleeve 448. The left extension rod 449 abuts against the top of the vertical column 443. At the bottom of the left extension rod 449 and on the right side of the vertical column 443, a semi-circular protrusion 460 is fixed. A locking member for position locking is provided on the positioning sleeve 448 and the positioning column 447. The locking member includes a plurality of locking holes linearly and evenly opened in the middle of the positioning column 447 vertically. A coordination hole is provided in the middle of the positioning sleeve 448. A horizontal pin 461 is connected between the coordination hole and the corresponding locking hole.

[0050] The pressing block 442 and the pressing roller 445 in the pressing element 44 can press down and roll the top of the cultural and tourism printing template, so that the top of the leveled cultural and tourism printing template is completely flat, and the accuracy and quality of laser engraving are ensured. At the same time, the following pressing-down structure can adjust the height of the pressing roller 445 to adapt to different sizes of cultural and tourism printing templates, and the cooperation of the semi-circular protrusion 460 and the vertical column 443 can ensure the rolling effect, so that the leveling effect is better.

[0051] Specifically, when the cleaning element 43 clears the plastic material shoveled by the shovel plate 421 outwards, the pressing block 442 will press against the top of the cultural and tourism printing template due to the vertical elastic rod and press the top thereof. At the same time, the pressing roller 445 will also press on the top of the cultural and tourism printing template due to the elastic force of the compression spring. When the shovel plate 421 contacts the protrusion, the entire shovel plate 421 and the collecting plate 414 will move to the right. Due to the blocking effect of the semi-circular protrusion 460, the collecting plate 414 and the shovel plate 421 are blocked, and due to the action of the left pushing element 45, the shovel plate 421 overcomes the action of the protrusion and shovels the protrusion flat.

[0052] Continue to refer to Figures 8 - 10 The left pushing element 45 includes elastic telescopic square rods 451 symmetrically hinged to the top of the collecting plate 414 front and back. One end of the square elastic telescopic rod 451 away from the collecting plate 414 is fixed with an extension rod 452. The left end of the extension rod 452 is hinged to the top of the trapezoidal slider. An L-shaped pushing plate 453 is fixed to the top of the collecting plate 414.

[0053] The left pushing element 45 is used to block the overall rightward movement of the shovel plate 421 and the collecting plate 414, and can push the extension rod 452 through the right end of the horizontal section of the L-shaped pushing plate 453, so that the elastic telescopic square rod 451 pushes the collecting plate 414 to the left. Furthermore, in cooperation with the blocking effect of the semi-circular protrusion 460, the shovel plate 421 can further overcome the pushing effect of the protrusion and level the protrusion, making the shoveling effect of the shovel plate 421 better, and thus ensuring the leveling effect of the leveling unit 4.

[0054] Specifically, when the shovel plate 421 and the collecting plate 414 as a whole are pushed to the right by the protrusion, the collecting plate 414 will drive the elastic telescopic square rod 451 to move to the right and contract, so that the extension rod 452 rotates counterclockwise. During this process, the L-shaped pushing plate 453 will continue to move to the right. After the L-shaped pushing plate 453 contacts the extension rod 452, the elastic telescopic square rod 451 further contracts, and then the elastic force accumulated by the elastic telescopic square rod 451 pushes the collecting plate 414 to the left, so that the shovel plate 421 and the collecting plate 414 as a whole can overcome the pushing effect of the protrusion and shovel off the protrusion.

[0055] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. A laser engraving device for cultural and tourism printing templates, comprising a bottom plate, a vertical plate is fixedly installed at the left end of the top of the bottom plate, and a laser engraving machine is installed at the right end of the top of the bottom plate, characterized in that, The right side of the vertical plate is connected with a positioning unit through a multi-stage electric push rod, and a leveling unit is installed on the top of the bottom plate between the positioning unit and the laser engraving machine through an inverted U-shaped frame; The positioning unit includes an assembly frame fixed at the pushing end of the multi-stage electric push rod. A plurality of positioning grooves for positioning the template are arranged on the top of the assembly frame. The plurality of positioning grooves are horizontally linearly distributed. Multi-directional positioning elements are arranged at the positions corresponding to each positioning groove in the assembly frame. A synchronous control element is connected to the bottoms of all the multi-directional positioning elements. An inlet frame is fixed on the top of the bottom plate at its middle line position through two L-shaped frames; The leveling unit includes a longitudinal slide rail fixed at the bottom of the longitudinal section of the inverted U-shaped frame. A longitudinal moving block is connected to the longitudinal slide rail through a longitudinal electric slider. A through column symmetrically distributed front and back is slidably penetrated through the middle of the longitudinal moving block. A circular plate is fixed at the right end of each through column. A horizontal spring is connected between the circular plate and the longitudinal moving block. A collecting plate is fixed to the left ends of the two through columns together. A leveling element, a cleaning element and a pressing element are arranged on the bottom of the collecting plate in sequence from left to right. A left pushing element is arranged between the collecting plate and the inverted U-shaped frame. The template is leveled by the combination of the leveling element and the pressing element; The cleaning element includes a longitudinal brush plate fixed to the bottom of the collecting plate. Rotating brush blocks are symmetrically hinged to the front and back sides of the longitudinal brush plate at the bottom of the collecting plate. Avoidance grooves are opened at the bottom of the collecting plate above the rotating brush blocks. A pushed plate is fixed to the top of the rotating brush block. Left extension plates are fixed to the left side surfaces of the two vertical sections of the inverted U-shaped frame. Pushing blocks for pushing the pushed plate are connected to the opposite side surfaces of the left ends of the two left extension plates through elastic telescopic rods; The pressing element includes a receiving groove opened at the bottom of the collecting plate. A pressing block is connected to the top of the receiving groove through a vertical elastic rod. A vertical column is slidably penetrated through the middle of the collecting plate on the right side of the receiving groove. An installation frame is fixed to the bottom of the vertical column. A pressing roller is installed on the installation frame. A downward pressing structure is arranged between the vertical column and the top of the longitudinal section of the inverted U-shaped frame; The multi-directional positioning element includes a central block arranged at the bottom of the positioning groove and slidably penetrating through the assembly frame. Synchronous positioning structures are arranged on each side surface of the positioning groove. The template is centered by the synchronous positioning structure, and the heights of all templates are synchronously adjusted through the central block.

2. The laser engraving device for a cultural and tourism printing template according to claim 1, wherein The synchronous positioning structure includes a centripetal groove arranged on the side surface of the positioning groove. An inner slider is slidably connected in the centripetal groove. A vertical groove is opened in the assembly frame at the end of the centripetal groove away from the positioning groove. An L-shaped connecting rod is slidably connected in the vertical groove. A track groove is arranged at the middle of the inner slider and close to one end of the vertical section of the L-shaped connecting rod. A track rod matching the track groove is fixed to the top of the vertical section of the L-shaped connecting rod. One end of the L-shaped connecting rod away from the track rod is fixedly connected to the side surface of the central block.

3. The laser engraving device for a cultural and tourism printing template according to claim 1, characterized in that, The synchronous control element includes connecting columns fixed to the bottom of each central block. A horizontal plate is fixed to the bottoms of all the connecting columns together. A rear extension plate is fixed to the rear side surface of the horizontal plate. An installation plate is fixed to the rear side surface of the assembly frame. A cylinder is installed at the bottom of the installation plate. The telescopic end of the cylinder is connected to the top of the rear extension plate.

4. A laser engraving device for cultural and tourism printing templates according to claim 1, characterized in that, The leveling element includes a leveling plate hinged to the bottom of the assembly plate. A positioning plate is fixed at the bottom of the assembly plate and on the front side of the leveling plate. A plurality of positioning holes are circumferentially and uniformly arranged on the right side of the leveling plate. A counterpoint hole is formed on the positioning plate. A positioning pin is connected between the positioning hole and the counterpoint hole at the corresponding position.

5. A laser engraving device for cultural and tourism printing templates according to claim 1, characterized in that, The pressing-down structure includes a connecting plate fixed to the left side surface of the vertical column. A compression spring is connected between the connecting plate and the assembly plate. A longitudinal chute is provided at the top of the longitudinal section of the inverted U-shaped frame. A positioning column is connected in the longitudinal chute through a trapezoidal slider. A positioning sleeve is sleeved on the positioning column. A left extension rod is fixed to the left side surface of the positioning sleeve. The left extension rod abuts against the top of the vertical column. A semi-circular protrusion is fixed to the bottom of the left extension rod and on the right side of the vertical column. A locking member for position locking is provided on the positioning sleeve and the positioning column.

6. The laser engraving device for cultural and tourism printing templates according to claim 5, characterized in that, The locking member includes a plurality of locking holes vertically and linearly and uniformly formed in the middle of the positioning column. A coordination hole is provided in the middle of the positioning sleeve. A horizontal pin is connected between the coordination hole and the locking hole at the corresponding position.

7. A laser engraving device for cultural and tourism printing templates according to claim 5, characterized in that, The left-pushing element includes elastic telescopic square rods symmetrically hinged to the top of the assembly plate in the front and back. One end of the elastic telescopic square rod away from the assembly plate is fixed with an extension rod. The left end of the extension rod is hinged to the top of the trapezoidal slider. An L-shaped pushing plate is fixed to the top of the assembly plate. The right end of the horizontal section of the L-shaped pushing plate can push the extension rod so that the elastic telescopic square rod pushes the assembly plate to the left.

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