Laser etching equipment
By introducing a gas suction treatment module and automated control into the laser etching equipment, the problems of material splashing and high-temperature damage during laser etching are solved, achieving efficient and environmentally friendly laser etching results and ensuring the integrity of the film surface and the coating quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TOBACCO RESEARCH INSTITUTE OF CHINESE ACADEMY OF AGRICULTURAL SCIENCES (QINGZHOU TOBACCO RESEARCH INSTITUTE OF CHINA NATIONAL TOBACCO COMPANY)
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-19
AI Technical Summary
In the production process of agricultural functional films, it is difficult to effectively control the power of laser etching equipment to avoid material splashing and high-temperature vaporization damaging the film surface, affecting the integrity of the etched lines and the subsequent coating effect.
A laser etching device was designed, comprising a worktable, a thin film roll-up device, a laser head moving support, a laser emission module, and a gas suction processing module. The high-temperature toxic gas generated during the etching process is sucked away by the gas suction head and collected into a gas tank. Combined with a controller, automated control and precise movement of the etching path are achieved.
It achieves automation and intelligence in laser etching, avoiding gas pollution and the impact of high-temperature gases on the thin film in unetched areas, ensuring the integrity of the etched lines and the effect of subsequent coating.
Smart Images
Figure CN224254476U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of laser etching technology, and more specifically relates to a laser etching device. Background Technology
[0002] In the production of reversible photochromic agricultural functional films, inorganic fillers, matrix resins, and anti-aging agents / anti-fogging agents are mixed uniformly under the protection of an inert gas and blown into a film to form an anti-aging layer / anti-drip layer. The formed anti-aging layer is then laser-etched onto the front surface using a laser front etching method. A UV-reversible color-changing pigment precursor, photoinitiator, and diluent are mixed and then screen-printed onto the etched anti-aging layer surface to obtain a UV-reversible color-changing film. The laser etching step is particularly crucial in this process. Laser etching can disrupt the integrity of the film surface, and subsequent coating steps require coating on the etched surface. Therefore, it is necessary to strictly control the power during laser etching and avoid material splashing or the high temperatures of material vaporization during laser etching to prevent damage to the film surface, ensuring the integrity of the etched lines and avoiding affecting the coating of the UV-reversible color-changing pigment. Therefore, how to provide a laser etching device specifically for the production of agricultural functional films is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0003] In view of the above, this utility model provides a laser etching device, which adopts the following technical solution:
[0004] A laser etching apparatus includes a worktable, a thin film roll-up device, a laser head moving support, a laser emission module, a gas suction processing module, and a controller;
[0005] An etching backplate is provided on the worktable; the thin film winding device includes two sets of winding units, respectively disposed on both sides of the worktable, for winding and unwinding the thin film; the laser head moving bracket is mounted on the worktable, with its two ends straddling both sides of the etching backplate, for supporting the laser emission module and the gas suction processing module; the controller is electrically connected to the thin film winding device, the laser head moving bracket, the laser emission module, and the gas suction processing module, for controlling operation; the controller is connected to an external power supply.
[0006] The etching backplate has an air suction chamber inside and several evenly arranged adsorption holes on its upper wall for adsorbing thin films; the lower part of the etching backplate is connected to a first air pump located inside the workbench via a pipe for creating a negative pressure adsorption film; the first air pump is electrically connected to the controller.
[0007] The laser emitting module includes a laser emitting head, and the air suction processing module includes an air suction head and a second air pump. The air suction head is sleeved on the laser emitting head and is hollow inside. One end of the air suction head is connected to the second air pump through an air pipe. The other end of the second air pump is connected to an air tank located inside the workbench through an air pipe. The second air pump is electrically connected to the controller.
[0008] Furthermore, the winding unit includes a spool, a spool shaft, a drive wheel, and a timing wheel; the spool is keyed to the middle of the spool shaft; the two ends of the spool shaft are supported and connected to the worktable via bearing seats; the drive wheel and the timing wheel are fixedly disposed at both ends of the winding unit; the timing wheels of the two winding units are connected by a synchronous belt drive; the film winding device also includes a drive unit, which includes a drive motor, the output end of which is fixedly connected to a drive wheel, and the drive wheel is connected to the drive wheels of the two winding units via a synchronous belt drive; the drive motor is electrically connected to the controller.
[0009] Furthermore, the laser head moving bracket includes two sets of parallel-arranged gantry frames, with the upper sides of the two sets of gantry frames fixedly connected by connecting rods; each of the two legs of the gantry frame has an electrically telescopic rod connected to the worktable; the electrically telescopic rod is electrically connected to the controller.
[0010] Furthermore, a connecting plate is fixedly installed on each of the two sets of connecting rods on opposite sides; the two sets of connecting plates are fixedly connected by two longitudinally arranged optical rods; a slider is slidably sleeved on the optical rod; the slider is used to support the laser emission module and the air suction processing module.
[0011] Furthermore, the laser emitting head is fixedly connected to the front side of the slider via a fixed back plate; a transmission unit is also provided on the connecting rod for controlling the movement of the laser emitting head.
[0012] Furthermore, the transmission unit includes a first transmission shaft, a second transmission shaft, a third transmission shaft, a fourth transmission shaft, and a transmission motor; the upper ends of the first, second, and third transmission shafts are all rotatably connected to the connecting rod; the upper end of the fourth transmission shaft passes through the connecting rod and is fixedly connected to the output end of the transmission motor; the first, second, third, and fourth transmission shafts are located below the connecting rod and are connected by synchronous belt transmission; the lower ends of the first and second transmission shafts are provided with grooves for winding a drive rope; the two ends of the drive rope are respectively fixedly connected to the left and right sides of the slider and simultaneously wound around the grooves of the first and second transmission shafts; the transmission motor is electrically connected to the controller.
[0013] Furthermore, an annular groove is provided on the inner wall of the air suction head; the inner wall of the annular groove is inclined downward toward the laser emitting head, and a number of evenly arranged air suction holes are provided on the inner wall.
[0014] The beneficial effects of this utility model are as follows:
[0015] This invention provides a laser etching device that uses a gas suction head around the laser emitter to remove the high-temperature toxic gases generated during the etching process and collect them in a gas tank. This not only avoids environmental pollution from the gas but also allows for rapid absorption of the high-temperature gases, preventing damage to the unetched areas of the film. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0017] Figure 1 This is a front structural diagram of the present invention.
[0018] Figure 2 This is a top view of the present invention.
[0019] Figure 3 This is a schematic diagram of the structure of the laser emitting module and the air intake processing module of this utility model.
[0020] In the figure:
[0021] 1-Worktable; 2-Laser head moving bracket; 3-Etching backplate; 4-Air suction chamber; 5-Wrap unit; 6-Wrap; 7-Wrap shaft; 8-Drive wheel; 9-Synchronous wheel; 10-Drive motor; 11-Connecting rod; 12-Connecting plate; 13-Light rod; 14-Slider; 15-Laser emitter; 16-First drive shaft; 17-Second drive shaft; 18-Third drive shaft; 19-Fourth drive shaft; 20-Drive motor; 21-Drive rope; 22-Air suction head; 23-Second air pump; 24-Air suction hole. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see the appendix Figure 1-3 This utility model provides a laser etching device, including a worktable 1, a thin film winding device, a laser head moving bracket 2, a laser emission module, a gas suction processing module, and a controller.
[0024] The worktable 1 supports the thin film coating device, the laser head moving bracket 2, the laser emission module, and the air suction processing module. An etching backplate 3 is mounted on the worktable 1 to provide support for thin film etching. An air suction chamber 4 is located inside the etching backplate 3, with several evenly spaced suction holes on its upper wall for adsorbing the thin film. The lower part of the etching backplate 3 is connected via a pipe to a first air pump located inside the worktable 1, connecting the air suction chamber 4 to the outside environment. A negative pressure is created in the air suction chamber 4, causing the thin film to adhere to the top of the etching backplate 3, resulting in a smooth etching surface and preventing wrinkles that could degrade the etching effect or damage the thin film. The first air pump is electrically connected to the controller.
[0025] The thin film winding device includes two winding units 5, respectively disposed on both sides of the worktable, for winding and unwinding the thin film, and for moving the thin film above the etching backing plate 3 to achieve movement of the thin film in the Y direction. The thin film winding device also includes a driving unit for driving the winding units 5.
[0026] The winding unit 5 includes a winding shaft 6, a winding shaft 7, a drive wheel 8, and a synchronizing wheel 9. The winding shaft 6 is sleeved on the middle of the winding shaft 7 and is keyed to the winding shaft 7. A bearing seat is provided at each end of the winding shaft 6. One end of the bearing seat is rotatably connected to the winding shaft 7 via a bearing, and the other end is fixedly connected to the worktable 1. The drive wheel 8 and the synchronizing wheel 9 are respectively fixedly disposed at both ends of the winding unit 5.
[0027] The synchronous pulleys 9 of the two sets of winding units 5 are connected by a synchronous belt drive. The drive unit includes a drive motor 10, the output end of which is fixedly connected to a drive pulley. The drive pulley is connected to the drive pulleys 8 of the two sets of winding units 5 by a synchronous belt drive. The drive motor 10 drives the drive pulley to rotate, thereby driving the drive pulleys 8 of the two sets of winding units 5 to rotate, causing the two sets of rolls 6 to rotate simultaneously, thus moving the film along the etching backing plate 3. The drive motor 10 is electrically connected to the controller.
[0028] The laser head moving bracket 2 is mounted on the worktable 1, with its two ends straddling both sides of the etching backplate 3. The laser head moving bracket 2 includes two sets of parallel gantries, each with a connecting rod 11 on both sides of its upper part, the connecting rod 11 being fixedly connected to the two gantries. An electric telescopic rod is fixedly connected below each of the gantry's side legs, used to control the lifting and lowering of the laser head moving bracket 2, enabling the laser to move in the Z-axis. The fixed end of the electric telescopic rod is fixedly located inside the worktable 1. The electric telescopic rod is electrically connected to the controller.
[0029] A connecting plate 12 is fixedly installed on each of the two sets of connecting rods 11 on the side that are far apart from each other; the two sets of connecting plates 12 are fixedly connected by two longitudinally arranged optical rods 13; a slider 14 is sleeved on the optical rod 13; the slider 14 is slidably connected to the optical rod 13; the slider 14 is used to support the laser emission module and the air suction processing module.
[0030] The laser emitting module includes a laser emitting head 15, which is fixedly connected to the front side of the slider 14 via a fixed back plate.
[0031] A transmission unit is also provided on the connecting rod for driving the slider 14 to move along the optical rod 13, thereby achieving laser X-axis movement. The transmission unit includes a first transmission shaft 16, a second transmission shaft 17, a third transmission shaft 18, a fourth transmission shaft 19, and a transmission motor 20. The upper ends of the first transmission shaft 16, the second transmission shaft 17, and the third transmission shaft 18 are rotatably connected to the connecting rod 11. The upper end of the fourth transmission shaft 19 passes through the connecting rod 11 and is fixedly connected to the output end of the transmission motor 20. The first transmission shaft 16, the second transmission shaft 17, the third transmission shaft 18, and the fourth transmission shaft 19 are located below the connecting rod 11 and connected by a synchronous belt drive. The transmission motor 20 drives the first transmission shaft 16 and the second transmission shaft 17 to rotate synchronously. The transmission motor 20 is electrically connected to the controller.
[0032] The lower ends of the first drive shaft 16 and the second drive shaft 17 are provided with grooves for winding the drive rope 21. One end of the drive rope 21 is fixedly connected to the right side of the slider 14, and the other end is wound around the groove of the first drive shaft 16, passing through the slider 14 in the opposite direction, extending to the groove of the second drive shaft 17, and then extending in the opposite direction to be fixedly connected to the left side of the slider 14. While the drive motor 20 drives the first drive shaft 16 and the second drive shaft 17 to rotate synchronously, the drive rope drives the slider 14 to slide along the optical rod 13, thereby controlling the laser emitting head 15 to move along the width direction of the thin film.
[0033] The laser emitter 15 is electrically connected to the controller, which controls the laser power and focal length. The etching power of the laser emitter 15 is controlled within the range of 1 to 2 W, and the scanning rate of the laser emitter 15 driven by the drive motor 20 is controlled within the range of 300 to 600 mm / s. -1 Exceeding these ranges may affect the adhesion and color-changing properties of the UV-reversible color-changing pigments. The controller is connected to an external power source to power the entire device.
[0034] The air suction module includes an air suction head 22 and a second air pump 23. The air suction head 22 is sleeved on the laser emitting head 15, and an annular groove is provided on its inner wall. The inner wall of the annular groove is inclined downward toward the laser emitting head 15, and a plurality of evenly arranged air suction holes 24 are provided on the inner wall. The air suction head 22 is hollow inside, and one end is connected to the second air pump 23 through an air pipe. The other end of the second air pump 23 is connected to an air tank located inside the worktable 1 through an air pipe. The second air pump 23 is electrically connected to the controller. The inclined air suction holes 24 can form an air vortex when suctioning air, which can suck away the high-temperature toxic gas generated by the laser emitting head 15 at the center when etching the thin film. The gas is then collected in the air tank through the air pipe and the air pump, which can avoid gas pollution to the environment and quickly absorb high-temperature gas, avoiding damage to the thin film in the unetched area.
[0035] The working process of this invention is as follows: The thin film to be etched is rolled onto the roller 6 of the thin film rolling device. The drive motor drives the roller to rotate, causing the thin film to move in the Y direction. The electric telescopic rod controls the laser head moving bracket 2 and the laser emitting head 15 to descend to a suitable height, and controls the power and focal length of the laser emitting head 15 through the controller; the laser emitting head 15 is started to etch the thin film, and at the same time, the drive motor 20 is started to control the laser emitting head 15 to move along the width direction of the thin film. The controller controls the laser emitting head 15 to move along a preset path to etch the thin film. This invention can realize the automation of laser etching of thin films, and achieves automatic and intelligent control through centralized control, significantly increasing the laser etching effect.
[0036] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A laser etching apparatus, characterized in that, Includes a worktable (1), a thin film winding device, a laser head moving bracket (2), a laser emission module, an air suction processing module, and a controller; An etching backplate (3) is provided on the worktable (1); the thin film winding device includes two sets of winding units (5), which are respectively arranged on both sides of the worktable and are used for winding and unwinding the thin film; the laser head moving bracket (2) is mounted on the worktable (1), with its two ends straddling both sides of the etching backplate (3), and is used to support the laser emission module and the gas suction processing module; the controller is electrically connected to the thin film winding device, the laser head moving bracket (2), the laser emission module and the gas suction processing module, and is used to control the operation; The etching backplate (3) is provided with an air suction chamber (4) inside, and a number of uniformly arranged adsorption holes are provided on the upper wall for adsorbing the film; the lower part of the etching backplate (3) is connected to a first air pump located inside the workbench (1) through a pipe for manufacturing a negative pressure adsorption film; the first air pump is electrically connected to the controller. The laser emitting module includes a laser emitting head (15), and the air suction processing module includes an air suction head (22) and a second air pump (23). The air suction head (22) is sleeved on the laser emitting head (15). The air suction head (22) is hollow inside, and one end is connected to the second air pump (23) through an air pipe. The other end of the second air pump (23) is connected to an air tank located inside the workbench (1) through an air pipe. The second air pump (23) is electrically connected to the controller.
2. The laser etching apparatus according to claim 1, characterized in that, The winding unit (5) includes a winding shaft (6), a winding shaft (7), a drive wheel (8), and a synchronous wheel (9); the winding shaft (6) is keyed to the middle of the winding shaft (7); the winding shaft (7) is supported and connected to the worktable (1) at both ends of the winding shaft (6) by bearing seats; the drive wheel (8) and the synchronous wheel (9) are fixedly set at both ends of the winding unit (5); the synchronous wheels (9) of the two winding units (5) are connected by synchronous belt transmission; the film winding device also includes a drive unit, the drive unit includes a drive motor (10), the output end of the drive motor (10) is fixedly connected to a drive wheel, the drive wheel is connected to the drive wheels (8) of the two winding units (5) by synchronous belt transmission; the drive motor (10) is electrically connected to the controller.
3. The laser etching apparatus according to claim 1, characterized in that, The laser head moving bracket (2) includes two sets of parallel masts, with the upper sides of the two sets of masts fixedly connected by connecting rods (11); the lower sides of the mast legs are all connected to the worktable (1) by electric telescopic rods; the electric telescopic rods are electrically connected to the controller.
4. The laser etching apparatus according to claim 3, characterized in that, A connecting plate (12) is fixedly provided on the side of each of the two sets of connecting rods (11) that are far apart from each other; the two sets of connecting plates (12) are fixedly connected by two longitudinally arranged optical rods (13); a slider (14) is slidably sleeved on the optical rod (13); the slider (14) is used to support the laser emission module and the air suction processing module.
5. The laser etching apparatus according to claim 4, characterized in that, The laser emitter (15) is fixedly connected to the front side of the slider (14) via a fixed back plate; a transmission unit is also provided on the connecting rod for controlling the movement of the laser emitter (15).
6. The laser etching apparatus according to claim 5, characterized in that, The transmission unit includes a first transmission shaft (16), a second transmission shaft (17), a third transmission shaft (18), a fourth transmission shaft (19), and a transmission motor (20); the upper ends of the first transmission shaft (16), the second transmission shaft (17), and the third transmission shaft (18) are rotatably connected to the connecting rod (11); the upper end of the fourth transmission shaft (19) passes through the connecting rod (11) and is fixedly connected to the output end of the transmission motor (20); the first transmission shaft (16), the second transmission shaft (17), the third transmission shaft (18), and the fourth transmission shaft (19) are located below the connecting rod (11) and are connected by synchronous belt transmission; the lower ends of the first transmission shaft (16) and the second transmission shaft (17) are provided with grooves for winding the drive rope (21); the two ends of the drive rope (21) are fixedly connected to the left and right sides of the slider (14) respectively, and are simultaneously wound on the grooves of the first transmission shaft (16) and the second transmission shaft (17); the transmission motor (20) is electrically connected to the controller.
7. The laser etching apparatus according to claim 1, characterized in that, The air suction head (22) has an annular groove on its inner wall; the inner wall of the annular groove is inclined downward toward the laser emitting head (15), and a number of evenly arranged air suction holes (24) are provided on the inner wall.