Laser etching equipment for preparing yoga mats

Abstract

The present invention discloses a laser etching device for preparing a yoga mat in the field of laser etching equipment technology, including a machine, a driving mechanism, a machine body, and a pressing mechanism. The pressing mechanism includes a mounting seat, a lifting seat, a lifting assembly, a negative pressure interface, and a sealing ring. The sealing ring is coaxially rotatably connected to the lifting seat, and the lower surface of the sealing ring is flush with the lower end surface of the lifting seat. The present invention drives the lifting seat to move downward by setting a lifting assembly, so that the sealing ring is against the upper surface of the yoga mat, and then generates downward pressure on the area to be etched of the yoga mat, so that the surface of the yoga mat is relatively flat, reducing the impact on the etching accuracy. In addition, the vacuum device evacuates the inside of the lifting seat through the negative pressure interface, and the etching debris generated by the machine body when laser etching the surface of the yoga mat will not be affected by air floating, so that the etching debris settles in the etching area under the action of gravity, thereby avoiding the impact and interference on the laser emission.

Description

Technical Field

[0001] The invention relates to the technical field of laser etching equipment, in particular to laser etching equipment for preparing a yoga mat. Background Art

[0002] Laser etching equipment is a device that uses laser technology to remove, engrave or etch the surface of a material. It removes or changes the properties of the material surface to create patterns, marks, text or complex designs by focusing a high-energy laser beam to locally heat the material to a sublimation or melting temperature. These devices are often used for a variety of applications, including etching, marking, engraving, cutting and customizing materials. In the manufacture of yoga mats, manufacturers can use laser etching equipment to etch different patterns, logos, patterns or text on the surface of yoga mats, add their own brand logos, logos or contact information, and create special textures or anti-slip patterns on the surface of yoga mats. Laser etching equipment provides greater customization and design flexibility in yoga mat manufacturing, enabling manufacturers to produce unique products to meet the needs of different markets and customers. At the same time, because it is more precise and controllable than traditional etching methods, it can also improve production efficiency and reduce waste.

[0003] After searching, it was found that a yoga mat laser etching device is disclosed in Chinese invention patent publication number CN117415466A, which includes a machine tool, a guide rail and a laser transmitter. The guide rail is arranged on one side of the machine tool, including an x-axis guide rail and a y-axis guide rail. The laser transmitter is slidably arranged on the x-axis guide rail. It also includes a vacuum adsorption mechanism and a positioning mechanism. The vacuum adsorption mechanism is arranged on the side of the machine tool close to the laser transmitter, and a vacuum pump is connected to its end. The positioning mechanism includes a driving assembly and a pressure roller. The pressure roller is arranged above the machine tool. The driving assembly can drive the vacuum adsorption mechanism to adsorb and fix the yoga mat at the position where the pressure roller is located and the position where the pressure roller passes.

[0004] In the above-mentioned prior art, although the yoga mat can be flattened on the machine tool through the vacuum adsorption force of the vacuum adsorption mechanism, the length and width of the yoga mat are generally large, and the vacuum adsorption mechanism adsorbs the surface of the yoga mat through the adsorption holes, and the area of ​​the yoga mat surface not covered by the adsorption holes cannot be affected by the vacuum adsorption force, or the vacuum adsorption force received is significantly smaller than that of other areas. The force on the surface of the yoga mat is uneven. Therefore, after the yoga mat is laid on the machine tool, the flatness of the area to be etched is low, and the etching depth and accuracy cannot be guaranteed during the etching process. In addition, when the yoga mat is laser etched, etching debris may be generated. These debris float in the air and may adhere to the surface of the laser emitter, thereby affecting the normal operation of the laser emitter. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a laser etching device for preparing a yoga mat. In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides: a laser etching device for preparing a yoga mat, comprising a machine platform of the laser etching device, a driving mechanism is provided on the machine platform, a body of a laser transmitter is installed on the driving mechanism, the driving mechanism is used to drive the body to move linearly along two orthogonal directions, a pressing mechanism is provided at the lower end of the body, and the pressing mechanism comprises:

[0007] A mounting seat fixedly sleeved on the lower end of the body, wherein the lower end of the mounting seat extends to below the body;

[0008] A lifting seat is telescopically inserted into the lower end of the mounting seat, the lifting seat is driven to move vertically by a lifting assembly mounted on the mounting seat, a negative pressure interface is provided on the outer wall of the lifting seat, and the negative pressure interface is connected to the inside of the lifting seat;

[0009] A sealing ring is sleeved on the lower end of the lifting seat, the sealing ring is coaxially rotatably connected to the lifting seat, and the lower surface of the sealing ring is flush with the lower end surface of the lifting seat.

[0010] Furthermore, a through cavity is provided inside the machine platform, and a plurality of adsorption holes are provided on the upper surface of the machine platform, and the adsorption holes are communicated with the through cavity.

[0011] Furthermore, the driving mechanism includes an X-axis translation unit and a Y-axis translation unit, the X-axis translation unit is used to drive the body to move linearly along the length direction of the platform, and the Y-axis translation unit is used to drive the body to move linearly along the width direction of the platform.

[0012] Furthermore, the X-axis translation unit includes racks horizontally fixed to the outer walls on both sides of the machine platform, and sliding seats are engaged on the two racks. The sliding seats can slide freely on the racks along the length direction of the racks. A crossbeam is commonly fixed to the upper ends of the two sliding seats. A first motor is vertically installed on one side of the sliding seat, and a transmission gear is sleeved on the output shaft of the first motor, and the transmission gear is meshed with the racks accordingly.

[0013] Furthermore, the Y-axis translation unit includes a ball screw horizontally rotatably connected to the two sliding seats, the ball screw is threadedly sleeved with a nut sleeve, and the nut sleeve is fixedly sleeved with a transverse movement seat, the transverse movement seat is engaged in the hollow cavity opened by the crossbeam, and can slide freely along the width direction of the machine, and the ball screw is driven to rotate by a second motor installed on the side wall of one of the sliding seats.

[0014] Furthermore, the lifting assembly includes two first ear blocks fixedly connected to the periphery of the lifting seat, the first ear blocks are vertically penetrated by a guide column extending upward, the upper ends of the two guide columns are commonly fixed with a floating ring, the floating ring is sleeved on the mounting seat and can slide freely up and down, the lower end of the mounting seat is fixedly sleeved with an electromagnet, and the electromagnet is used in conjunction with the floating ring.

[0015] Furthermore, a return spring is wound around the mounting seat, and two ends of the return spring in the elastic force direction elastically press against the electromagnet and the floating ring respectively and one by one.

[0016] Furthermore, a plurality of hollow cylinders are vertically fixedly connected to the upper end surface of the sealing ring, a sliding column is coaxially penetrated through the bottom of the hollow cylinder, the sliding column slides vertically and freely on the hollow cylinder, a spherical groove is opened at the lower end of the sliding column, a ball is embedded in the spherical groove, the ball diameter of the ball is smaller than the inner diameter of the spherical groove, and the ball rotates freely in the spherical groove, and an oil supply assembly is provided on the hollow cylinder.

[0017] Furthermore, the oil supply assembly includes an oil storage tank that is coaxially rotatably sleeved on the periphery of the lifting seat, the top surface of the hollow cylinder is fixedly connected to the oil storage tank, the outer wall of the hollow cylinder is provided with a connecting port, the connecting port is connected to the interior of the hollow cylinder, and the connecting port is connected to the interior of the oil storage tank through a hose, and one end of the sliding column that penetrates into the hollow cylinder is fixedly connected to a rubber column, the rubber column is clamped in the inner cavity of the hollow cylinder and slides freely up and down, a connecting hole that penetrates the sliding column and is connected to the spherical groove is provided in the rubber column, and a waist-shaped hole that passes through the connecting hole is provided on the outer wall of the rubber column, and the waist-shaped hole is used in conjunction with the connecting port, and a driving spring is vertically installed in the inner cavity of the hollow cylinder, and the two ends of the driving spring in the elastic force direction elastically press against the upper end surface of the rubber column and the top wall of the hollow cylinder in a one-to-one manner.

[0018] Furthermore, an L-shaped mounting arm is fixedly connected to the periphery of the mounting seat, and a steel ball is rotatably embedded in the mounting arm toward the outer wall of one side of the oil storage bin. The outer wall of the oil storage bin is provided with a rolling groove for the steel ball to engage with, and the rolling groove includes a straight groove and a spiral groove connected end to end from bottom to top, and the steel ball rolls freely in the straight groove and the spiral groove.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention drives the lifting seat to move downward by arranging a lifting assembly, so that the sealing ring presses against the upper surface of the yoga mat, thereby generating downward pressure on the area to be etched of the yoga mat, so that the surface of the yoga mat is relatively flat, reducing the influence on the etching accuracy. In addition, the vacuum device evacuates the inside of the lifting seat through the negative pressure interface, so that after the sealing ring presses against the surface of the yoga mat, the vacuum device evacuates the inside of the lifting seat, so that the etching fragments generated by the machine body when performing laser etching on the surface of the yoga mat will not be affected by air floating, so that the etching fragments settle in the etching area under the action of gravity, thereby preventing the etching fragments from floating in the air and adhering to the surface of the laser emitter of the machine body, thereby affecting and interfering with the laser emission;

[0021] The present invention arranges the lubricating oil in the oil storage bin to enter the spherical groove of the sliding column through the hollow cylinder, so that the lubricating oil can overflow to the vicinity of the to-be-etched area of ​​the yoga mat, and then the gap between the lower end surface of the sealing ring and the upper surface of the yoga mat can be filled with the lubricating oil, so that when the inside of the lifting seat is evacuated, the air outside the lifting seat will not enter the inside of the lifting seat from the gap between the upper surface of the yoga mat and the lower end surface of the sealing ring, so that the inside of the lifting seat will not generate air flow, and the floating phenomenon of etching debris generated during the etching process is further reduced;

[0022] The present invention provides a mounting arm, a steel ball and a rolling groove. When the lifting seat moves downward, the steel ball rolls from the straight groove of the rolling groove to the spiral groove in sequence, thereby driving the sealing ring to rotate, so that the lubricating oil can flow into the surface of the yoga mat along an arc trajectory, that is, the lubricating oil on the surface of the yoga mat is distributed in a ring shape, so that the contact surface between the sealing ring and the surface of the yoga mat can be evenly covered with the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 A schematic diagram of the structure of a laser etching device for preparing a yoga mat according to the present invention;

[0025] Figure 2 It is a schematic diagram of the structure after the machine body, the mounting seat and the lifting seat are assembled in the present invention;

[0026] Figure 3 for Figure 2 A schematic cross-sectional view of the middle structure;

[0027] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point A;

[0028] Figure 5 for Figure 2 Schematic diagram of the structure at a medium upward viewing angle;

[0029] Figure 6 It is a schematic diagram of the structure after the sealing ring and the hollow cylinder are assembled in the present invention;

[0030] Figure 7 for Figure 6 A schematic cross-sectional view of the middle structure;

[0031] Figure 8 It is a structural schematic diagram of the oil storage bin in the present invention.

[0032] In the figure, the description of each figure mark is as follows: 1. transmission gear; 2. first motor; 3. machine table; 4. rack; 5. sliding seat; 6. ball screw; 7. nut sleeve; 8. transverse seat; 9. second motor; 10. crossbeam; 11. machine body; 12. mounting seat; 13. oil storage tank; 14. adsorption plate; 15. adsorption hole; 16. floating ring; 17. electromagnet; 18. lifting seat; 19. negative pressure interface; 20. sealing ring; 21. fixed block; 22. hollow cylinder; 23. mounting arm; 24. first ear block; 25. guide column; 26. reset spring; 27. spiral groove; 28. hose; 29. ​​steel ball; 30. driving spring; 31. rubber column; 32. waist-shaped hole; 33. sliding column; 34. ball; 35. connecting hole; 36. connecting port; 37. straight groove; 38. replenishing port. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example

[0034] like Figure 1-8 As shown, this embodiment provides an embodiment: a laser etching device for preparing a yoga mat, comprising a machine table 3 of the laser etching device, an adsorption plate 14 is fixedly connected in the middle of the machine table 3, the adsorption plate 14 is a part of the machine table 3, a through cavity is opened inside the adsorption plate 14, and a plurality of adsorption holes 15 connected to the through cavity are opened on the upper surface of the adsorption plate 14, and the adsorption holes 15 are distributed in rows and columns on the upper surface of the adsorption plate 14, and a vacuum pump is installed at the bottom of the adsorption plate 14, and the vacuum pump evacuates the inside of the through cavity of the adsorption plate 14, and the adsorption plate 14 is welded with a baffle bar on the top surface of both ends of the machine table 3 in the length direction, and a positioning groove is formed between the two baffle bars. When performing laser etching, the yoga mat is firstly laid flat on the upper surface of the adsorption plate 14, and the two baffle bars and the side wall of the machine table 3 limit the four sides of the yoga mat, and then the vacuum pump is started. After the vacuum pump is started, the inside of the through cavity is evacuated, and the yoga mat is preliminarily clamped on the upper surface of the adsorption plate 14 through negative pressure suction;

[0035] Racks 4 are welded horizontally on the outer walls on both sides of the width direction of the machine table 3, and sliding seats 5 are engaged with the two racks 4. The sliding seats 5 slide freely on the racks 4 along the length direction of the racks 4. The upper ends of the two sliding seats 5 are fixedly connected to a crossbeam 10. A first motor 2 is vertically installed on one side of the sliding seat 5. The output shaft of the first motor 2 is sleeved with a transmission gear 1, and the transmission gear 1 is meshed with the rack 4 accordingly. A ball screw 6 is horizontally rotatably connected to the two sliding seats 5, and a nut sleeve 7 is threadedly sleeved on the ball screw 6. A transverse seat 8 is fixedly sleeved on the nut sleeve 7. The transverse seat 8 is engaged in the hollow cavity opened by the crossbeam 10 and slides freely along the width direction of the machine table 3. The ball screw 6 is driven to rotate by a second motor 9 installed on the side wall of one of the sliding seats 5, and the bottom of the transverse seat 8 is connected to the body 11 of the laser transmitter;

[0036] The first motor 2 is started, and the output shaft of the first motor 2 rotates, thereby driving the transmission gear 1 to rotate, and the transmission gear 1 is meshed with the rack 4, thereby driving the sliding seat 5 to move horizontally along the length direction of the machine table 3. The second motor 9 is started, and the output shaft of the second motor 9 rotates, thereby driving the ball screw 6 to rotate, so that the ball screw 6 drives the nut sleeve 7 to move horizontally, and then the nut sleeve 7 drives the lateral movement seat 8 to move horizontally along the width direction of the machine table 3, thereby realizing the linear movement of the body 11 of the laser transmitter along the X-axis and Y-axis directions to position the etching area of ​​the yoga mat;

[0037] The lower end of the body 11 is connected to a mounting seat 12 in the form of a flange by means of screws. The middle part of the mounting seat 12 is in the form of a through hole, and a lifting seat 18 is telescopically inserted. The outer periphery of the lifting seat 18 is in a sliding fit with the inner hole of the mounting seat 12, that is, the lifting seat 18 can slide freely up and down in the inner hole of the mounting seat 12. In addition, the lower end of the lifting seat 18 passes through the mounting seat 12 and is sleeved with a sealing ring 20. The sealing ring 20 can be made of rubber. The lifting seat 18 is a tubular structure, and the lifting seat 18 The orthographic projection area of ​​the inner hole can cover the etched area of ​​the yoga mat, so that the etched area will be located in the inner hole of the lifting seat 18, the sealing ring 20 coaxially rotates on the lifting seat 18, and the lower surface of the sealing ring 20 is flush with the lower end surface of the lifting seat 18, and the outer wall of the lifting seat 18 is provided with a negative pressure interface 19, the negative pressure interface 19 is connected to the inside of the lifting seat 18, and the negative pressure interface 19 is connected to another vacuum pump through a pipeline, so that the vacuum pump evacuates the inside of the lifting seat 18 through the negative pressure interface 19;

[0038] Two first ear blocks 24 are fixedly connected to the periphery of the lifting seat 18. The two first ear blocks 24 are symmetrically arranged along the axial direction of the lifting seat 18. The first ear blocks 24 are vertically penetrated with guide columns 25 extending upward. The upper ends of the two guide columns 25 are commonly fixed with a floating ring 16. The floating ring 16 is sleeved on the mounting seat 12 and can slide freely up and down. The lower end of the mounting seat 12 is fixedly sleeved with an electromagnet 17. The electromagnet 17 is used in conjunction with the floating ring 16. Specifically, the floating ring 16 is made of any one of iron, cobalt and nickel. In this way, when the electromagnet 17 is energized, it will generate magnetic attraction on the floating ring 16, thereby The floating ring 16 is driven to move downward, and when it moves downward, the guide column 25 is synchronously driven to move downward, so that the lifting seat 18 can move downward. In addition, a return spring 26 is wound around the mounting seat 12, and the two ends of the return spring 26 in the elastic force direction elastically press against the electromagnet 17 and the floating ring 16 one by one. In this way, when the floating ring 16 moves downward, the floating ring 16 will compress the return spring 26, so that the return spring 26 accumulates elastic potential energy, and then the electromagnet 17 loses its magnetism after power is cut off, and the elastic potential energy accumulated in the return spring 26 is released, thereby driving the floating ring 16 to move upward and reset;

[0039] The sealing ring 20 is fixedly connected to two fixed blocks 21 at the periphery, and the upper end surface of the fixed block 21 is vertically fixedly connected to two hollow cylinders 22. A sliding column 33 is coaxially penetrated at the bottom of the hollow cylinder 22. The sliding column 33 slides vertically and freely on the hollow cylinder 22. A spherical groove is opened at the lower end of the sliding column 33, and a ball 34 is embedded in the spherical groove. The ball diameter of the ball 34 is smaller than the inner diameter of the spherical groove, and the ball 34 rotates freely in the spherical groove. The lifting seat 18 is coaxially rotatably sleeved with an oil storage tank 13 at the periphery. A replenishing port 38 is provided on the top of the oil tank 13, and a sealing cover is installed on the replenishing port 38. By unscrewing the sealing cover, neutral lubricating oil is replenished into the oil storage tank 13 through the replenishing port 38. The top surface of the hollow cylinder 22 is fixedly connected to the oil storage tank 13. The outer wall of the hollow cylinder 22 is provided with a connecting port 36. The connecting port 36 is connected to the inside of the hollow cylinder 22. The connecting port 36 is connected to the inside of the oil storage tank 13 through the hose 28. The end of the sliding column 33 that penetrates into the hollow cylinder 22 is fixedly connected to the rubber column 3 1 (the material of the rubber column 31 is rubber), the rubber column 31 is engaged in the inner cavity of the hollow cylinder 22 and can slide freely up and down, a connecting hole 35 is provided in the rubber column 31, which penetrates the sliding column 33 and is connected to the spherical groove, and a waist-shaped hole 32 is provided on the outer wall of the rubber column 31 to penetrate the connecting hole 35. The waist-shaped hole 32 is used in conjunction with the connecting port 36. A driving spring 30 is vertically installed in the inner cavity of the hollow cylinder 22, and the two ends of the driving spring 30 in the elastic direction correspond to each other elastically against the upper end of the rubber column 31 The sealing ring 20 is suspended in the initial state. At this time, the driving spring 30 has a downward elastic resisting force on the rubber column 31, so that the rubber column 31 drives the sliding column 33 to move downward, and the ball 34 is exposed to the bottom of the fixed block 21, and the waist-shaped hole 32 is not connected with the connecting port 36, so that the lubricating oil in the oil storage tank 13 will not enter the waist-shaped hole 32 from the connecting port 36, so that the lubricating oil will not flow into the surface of the yoga mat when etching is not performed;

[0040] An L-shaped mounting arm 23 is fixedly connected to the periphery of the mounting seat 12, and a steel ball 29 is rotatably embedded in the mounting arm 23 on one side outer wall of the oil storage bin 13. A rolling groove for the steel ball 29 to engage is opened on the outer wall of the oil storage bin 13, and the rolling groove includes a straight groove 37 and a spiral groove 27 connected end to end from bottom to top, and the steel ball 29 rolls freely in the straight groove 37 and the spiral groove 27. When the lifting seat 18 moves downward, the mounting arm 23, the lifting seat 18 and the oil storage bin 13 are in a relative motion state, that is, the oil storage bin 13 moves downward relative to the mounting arm 23, so that the steel ball 29 rolls from the straight groove 37 to the spiral groove 27, and then can drive the oil storage bin 13 and the sealing ring 20 to rotate at least 90 degrees around the axial direction of the lifting seat 18.

[0041] Working principle of the present invention:

[0042] Clamping the yoga mat: Lay the yoga mat flat on the upper surface of the adsorption plate 14, and limit the yoga mat around the two baffles and the side wall of the machine 3, and then start the vacuum pump. After the vacuum pump is started, the inside of the through cavity is evacuated, and the yoga mat is preliminarily clamped on the upper surface of the adsorption plate 14 through negative pressure suction;

[0043] Positioning the etching area of ​​the yoga mat: the first motor 2 and the second motor 9 are controlled by an external control cabinet, and the rotation angular stroke of the output shafts of the first motor 2 and the second motor 9 are controlled. When the first motor 2 is started, the output shaft of the first motor 2 rotates, thereby driving the transmission gear 1 to rotate, and the transmission gear 1 is meshed with the rack 4, thereby driving the sliding seat 5 to move horizontally along the length direction of the machine table 3. When the second motor 9 is started, the output shaft of the second motor 9 rotates, thereby driving the ball screw 6 to rotate, so that the ball screw 6 drives the nut sleeve 7 to move horizontally, and then the nut sleeve 7 drives the lateral movement seat 8 to move horizontally along the width direction of the machine table 3, thereby realizing the linear motion of the body 11 of the laser transmitter along the X-axis and Y-axis directions to position the etching area of ​​the yoga mat;

[0044] Pressing the etched area: The control cabinet controls the electromagnet 17 to be energized. When the electromagnet 17 is energized, it will generate magnetic attraction on the floating ring 16, thereby driving the floating ring 16 to move downward. When moving downward, it will synchronously drive the guide column 25 to move downward, so that the lifting seat 18 can move downward. When the floating ring 16 moves downward, the floating ring 16 will compress the reset spring 26, so that the reset spring 26 accumulates elastic potential energy, thereby making the sealing ring 20 press against the upper surface of the yoga mat, generating downward pressure on the yoga mat, and cooperating with the vacuum adsorption of the yoga mat, so that the sealing ring 20 can press the etched area on the upper surface of the yoga mat, thereby making the etched area of ​​the yoga mat flat;

[0045] Vacuuming the yoga mat surface: When the lifting seat 18 moves downward, the mounting arm 23, the lifting seat 18 and the oil storage tank 13 are in relative motion, that is, the oil storage tank 13 moves downward relative to the mounting arm 23, so that the steel ball 29 rolls from the straight groove 37 to the spiral groove 27, thereby driving the oil storage tank 13 and the sealing ring 20 to rotate around the axial direction of the lifting seat 18. When the steel ball 29 rolls in the straight groove 37, the ball 34 on the sliding column 33 will contact the upper surface of the yoga mat, and as the steel ball 29 rolls from the straight groove 37 to the spiral groove 27, the sliding column 33 will The column 33 is blocked by the surface of the yoga mat, so that the sliding column 33 and the hollow cylinder 22 move relative to each other, so that the hollow cylinder 22 and the rubber column 31 move relative to each other, so that the connecting port 36 begins to penetrate the waist-shaped hole 32 on the rubber column 31. At this time, the lubricating oil in the oil storage tank 13 will enter the waist-shaped hole 32 through the hose 28 and the connecting port 36, and then flow into the connecting hole 35 from the waist-shaped hole 32, and then flow into the spherical groove. Since the inner diameter of the spherical groove is larger than the ball diameter of the ball 34, the lubricating oil can flow out from the gap between the spherical groove and the ball 34 to the surface of the yoga mat, so that the lubricating oil The oil flows into the surface of the yoga mat. When the steel ball 29 rolls from the straight groove 37 into the spiral groove 27, the inner wall of the spiral groove 27 exerts an extrusion force on the steel ball 29, so that the steel ball 29 drives the oil storage bin 13 to rotate. The oil storage bin 13 is fixedly connected to the top of the hollow cylinder 22, and then drives the sealing ring 20 to rotate. During the rotation, the lubricating oil will flow into the surface of the yoga mat along an arc trajectory, so that the lubricating oil coverage area on the surface of the yoga mat is annular. When the lifting seat 18 moves downward to its position, the sealing ring 20 contacts the surface of the yoga mat, and because the lubricating oil is fluid, Lubricating oil is filled between the sealing ring 20 and the surface of the yoga mat to avoid a gap between the sealing ring 20 and the surface of the yoga mat. Then, another vacuum pump is started to evacuate the inside of the lifting seat 18 through the negative pressure interface 19, so that most of the air in the lifting seat 18 is extracted. Finally, the body 11 is started, and the laser head of the body 11 emits a laser to laser-etch the surface of the yoga mat. The etching debris generated during the laser etching will not float in the air due to the buoyancy of the air, thereby reducing the phenomenon that the etching debris during the etching process adheres to the surface of the laser emitter.

[0046] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser etching device for preparing a yoga mat, comprising a machine platform (3) of the laser etching device, wherein the machine platform (3) is provided with a driving mechanism, a body (11) of a laser transmitter is mounted on the driving mechanism, and the driving mechanism is used to drive the body (11) to move linearly along two orthogonal directions, characterized in that: A pressing mechanism is provided at the lower end of the machine body (11), and the pressing mechanism comprises: A mounting seat (12) fixedly sleeved on the lower end of the machine body (11), wherein the lower end of the mounting seat (12) extends below the machine body (11); A lifting seat (18) is telescopically inserted into the lower end of the mounting seat (12), the lifting seat (18) is driven to move vertically by a lifting assembly mounted on the mounting seat (12), a negative pressure interface (19) is provided on the outer wall of the lifting seat (18), and the negative pressure interface (19) is connected to the interior of the lifting seat (18); a sealing ring (20) sleeved on the lower end of the lifting seat (18), the sealing ring (20) being coaxially rotatably connected to the lifting seat (18), and the lower surface of the sealing ring (20) being flush with the lower end surface of the lifting seat (18); The lifting assembly comprises two first ear blocks (24) fixedly connected to the periphery of the lifting seat (18), the first ear blocks (24) are vertically penetrated by a guide column (25) extending upward, the upper ends of the two guide columns (25) are commonly fixedly connected to a floating ring (16), the floating ring (16) is sleeved on the mounting seat (12) and can slide freely up and down, the lower end of the mounting seat (12) is fixedly sleeved with an electromagnet (17), and the electromagnet (17) is used in conjunction with the floating ring (16); A return spring (26) is wound around the mounting seat (12), and two ends of the return spring (26) in the elastic force direction elastically press against the electromagnet (17) and the floating ring (16) in a one-to-one correspondence. A plurality of hollow cylinders (22) are vertically fixedly connected to the upper end surface of the sealing ring (20); a sliding column (33) is coaxially penetrated through the bottom of the hollow cylinder (22); the sliding column (33) slides vertically and freely on the hollow cylinder (22); a spherical groove is formed at the lower end of the sliding column (33); a ball (34) is embedded in the spherical groove; the ball diameter of the ball (34) is smaller than the inner diameter of the spherical groove, and the ball (34) rotates freely in the spherical groove; and an oil supply component is provided on the hollow cylinder (22); The oil supply assembly comprises an oil storage bin (13) coaxially rotatably sleeved on the periphery of the lifting seat (18); the top surface of the hollow cylinder (22) is fixedly connected to the oil storage bin (13); the outer wall of the hollow cylinder (22) is provided with a connecting port (36); the connecting port (36) is connected to the interior of the hollow cylinder (22); the connecting port (36) is connected to the interior of the oil storage bin (13) through a hose (28); one end of the sliding column (33) that penetrates into the hollow cylinder (22) is fixedly connected to a rubber column (31); the rubber column (31) is engaged in the hollow cylinder ( The rubber column (31) is provided with a connecting hole (35) penetrating the sliding column (33) and communicating with the spherical groove; the outer wall of the rubber column (31) is provided with a waist-shaped hole (32) penetrating the communicating hole (35); the waist-shaped hole (32) is used in conjunction with the connecting port (36); a driving spring (30) is vertically installed in the inner cavity of the hollow cylinder (22); the two ends of the driving spring (30) in the elastic force direction respectively elastically press against the upper end surface of the rubber column (31) and the inner top wall of the hollow cylinder (22) in a one-to-one correspondence; An L-shaped mounting arm (23) is fixedly connected to the periphery of the mounting seat (12), and a steel ball (29) is rotatably embedded in the mounting arm (23) on one side of the outer wall facing the oil storage bin (13). The outer wall of the oil storage bin (13) is provided with a rolling groove for the steel ball (29) to engage, and the rolling groove comprises a straight groove (37) and a spiral groove (27) connected end to end from bottom to top, and the steel ball (29) rolls freely in the straight groove (37) and the spiral groove (27).

2. The laser etching device for preparing a yoga mat according to claim 1, characterized in that: A through cavity is provided inside the machine platform (3), and a plurality of adsorption holes (15) are provided on the upper surface of the machine platform (3), wherein the adsorption holes (15) are connected to the through cavity.

3. The laser etching device for preparing a yoga mat according to claim 1, characterized in that: The driving mechanism comprises an X-axis translation unit and a Y-axis translation unit, the X-axis translation unit being used to drive the machine body (11) to move linearly along the length direction of the machine platform (3), and the Y-axis translation unit being used to drive the machine body (11) to move linearly along the width direction of the machine platform (3).

4. The laser etching device for preparing a yoga mat according to claim 3, characterized in that: The X-axis translation unit comprises racks (4) fixedly connected horizontally to the outer walls of both sides of the machine platform (3); two racks (4) are engaged with sliding seats (5); the sliding seats (5) slide freely on the racks (4) along the length direction of the racks (4); the upper ends of the two sliding seats (5) are commonly fixedly connected with a crossbeam (10); a first motor (2) is vertically mounted on one side of the sliding seat (5); an output shaft of the first motor (2) is sleeved with a transmission gear (1); and the transmission gear (1) is correspondingly meshed with the racks (4).

5. The laser etching device for preparing a yoga mat according to claim 4, characterized in that: The Y-axis translation unit comprises a ball screw (6) connected to the two sliding seats (5) in a horizontally rotatable manner, a nut sleeve (7) being threadedly sleeved on the ball screw (6), a transverse seat (8) being fixedly sleeved on the nut sleeve (7), the transverse seat (8) being engaged in a hollow cavity formed by the cross beam (10) and freely sliding along the width direction of the machine platform (3), and the ball screw (6) being driven to rotate by a second motor (9) mounted on the side wall of one of the sliding seats (5).

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