A laser cutting machine and cutting process for film production

Abstract

The application relates to the technical field of film cutting, and discloses a laser cutting machine for film production, which comprises a laser tube body, the laser tube body is fixedly connected to a moving table of the laser cutting machine, the laser tube body can move along X and Y axes above the laser cutting machine by following the moving table, and a laser emission end of the laser tube body faces the film. The laser cutting machine for film production and the cutting process, by arranging the pressing assembly and the first ball, the traditional sliding friction is replaced by rolling friction, the film can be continuously and flatly pressed and fixed during the laser cutting process, and due to the small friction, scratches on the film surface or film tearing is avoided, and the optical performance of the film is protected.

Description

Technical Field

[0001] This invention relates to the field of thin film cutting technology, specifically to a laser cutting machine and cutting process for thin film production. Background Technology

[0002] In the laser cutting process of thin films (such as optical PET, composite polycarbonate PC, lithium battery separators, etc.), the flatness control of the film directly determines the cutting accuracy and kerf quality. Due to the extremely high thermal sensitivity and thinness of the film, the instantaneous high temperature of the laser can easily cause upward thermal curling (edge ​​warping) at the film edges. Therefore, existing laser cutting machines typically equip the laser head with a clamping device, but these devices have the following problems in actual production: Traditional pressing devices often use "pressing feet" made of metal or hard plastic. On high-speed roll-to-roll production lines, the friction generated by this sliding contact can easily leave microscopic scratches on the surface of sensitive films, damaging their optical performance. Furthermore, when the laser head performs complex and irregular path cutting, the fixed pressing feet cannot adapt to the slight undulations on the film surface, resulting in uneven pressing or even tearing of the film. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a laser cutting machine and cutting process for thin film production, which can move on the surface of the thin film without damaging the laser tube body as it moves along the X and Y axes.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a laser cutting machine for thin film production, comprising: The laser tube is fixedly connected to the moving platform of the laser cutting machine, and the laser tube can move along the X and Y axes above the laser cutting machine with the moving platform. The laser emitting end of the laser tube faces the thin film. The blowing and suction assembly can cool the cutting gap when the laser tube cuts the film, and can also suck out the waste generated during the cutting of the film. The blowing and suction assembly can also change the suction force according to different film thicknesses and impurity viscosity and particle size. A support assembly that connects the laser tube body and the blow-in / blow-out assembly, and a fourth cavity is formed inside the support assembly, which is concentric with the laser beam of the laser tube body; The pressing component can restrict the movement of the film when the laser beam of the laser tube cuts the film, and the pressing component can also move on the surface of the film without damaging the film during the movement of the laser tube along the X and Y axes. An adaptive mechanism that can change the force of the pressing component pressing on the film as the suction force of the blowing and sucking components changes.

[0005] Furthermore, it also includes an air guiding component, which can divert the blowing force of the air blowing and suction components.

[0006] Furthermore, the support assembly includes a first housing and a second housing. The upper end of the first housing is fixedly connected to the outer wall of the laser tube, and the lower end of the first housing is fixedly connected to the upper end of the second housing. The lower end of the second housing faces the thin film, and the fourth cavity is located inside the second housing.

[0007] Furthermore, the blowing and sucking assembly includes a plurality of first tubes and a plurality of second tubes. One end of each of the plurality of first tubes is fixedly connected to the upper end of the first housing, one end of each of the plurality of second tubes is fixedly connected to one end of the second housing, the other end of each of the plurality of first tubes is fixedly connected to the output end of an external air supply device, and the other end of each of the plurality of second tubes is fixedly connected to the input end of the same external air supply device.

[0008] Furthermore, the pressing assembly includes a first annular plate, a plurality of first rods and a plurality of first balls. The interior of the second housing also forms a third cavity, which is an annular cavity and is concentric with the fourth cavity. The upper ends of the plurality of first rods are all located in the third cavity, and the lower ends of the plurality of first rods all penetrate to the outside of the second housing and are all fixedly connected to the first annular plate. The inner wall of the end of the plurality of first rods located below the first annular plate is respectively rolledly connected to the plurality of first balls, and the surfaces of the plurality of first balls all abut against the film.

[0009] Furthermore, the adaptive mechanism includes a second annular plate, several springs, several plates, several organ pipes, and several guide components. Several first rods are at least evenly divided into two groups, with the first rods in the two groups staggered. The outer wall of the second annular plate is fixedly connected to the inner wall of the third cavity. The second cavity of the second housing is separated from the third cavity by the second annular plate. Several third openings are formed through the surface of the second annular plate. The outer walls of the several plates are all fixedly connected to the inner wall of the second cavity. The bottom surfaces of the several plates are respectively fixedly connected to the upper ends of several springs. The upper ends of the several organ pipes are all fixedly connected to the side of the second annular plate closest to the third cavity. The lower ends of the several springs are respectively... Several third ports are fixedly connected to one end of several first rods in the first group located in the third cavity. The lower ends of several organ pipes are fixedly connected to one end of several first rods in the first group located in the third cavity. One end of several guide components is connected to one end of several organ pipes near the first rod. The other end of several guide components is connected to the inner wall of the third cavity. Several springs are located inside several organ pipes. Several second ports are opened through the upper end of the second cavity. Several second ports are located inside the first housing and below the first tube. The first housing, several second ports, the second cavity and several organ pipes are connected.

[0010] Furthermore, the guide assembly includes a third annular plate, two blocks, four second rods, and two second balls. The inner wall of the third annular plate is fixedly connected to the end of the organ pipe near the first rod. The two second balls are embedded in and tumbled on the outer wall of the third annular plate. The sides of the two blocks that are far apart from each other are fixedly connected to the two sides of the inner wall of the third cavity. The bottom surfaces of the two blocks are fixedly connected to the upper ends of the four second rods. The lower ends of the four second rods are fixedly connected to the bottom surface of the third cavity. One block and two second rods form a group, and the two second balls are located in the two groups of blocks and the two groups of rods respectively.

[0011] Furthermore, the gas guiding assembly includes a hollow first truncated cone, a hollow second truncated cone, and a hollow third truncated cone. The lower end of the hollow third truncated cone is fixedly connected to the upper surface of the second housing. The hollow third truncated cone is located inside the first housing and separates the first housing into a fifth cavity and a sixth cavity. Both the fifth and sixth cavities are located below the first tube. The outer wall of the hollow second truncated cone is fixedly connected to the lower end of the fourth cavity. The bottom surface of the hollow second truncated cone is fixedly connected to the upper end of the hollow first truncated cone. The hollow first truncated cone, the hollow second truncated cone, and the hollow third truncated cone are all concentric with the laser beam of the laser tube. The first tube, the fifth cavity, and the second port are connected. The first tube, the sixth cavity, and the fourth cavity are also connected.

[0012] Furthermore, the cross-sections of the internal cavities of the hollow first, second, and third truncated cones are all trapezoidal on the first surface, which is perpendicular to the horizontal plane. The cavity of the hollow first truncated cone is narrower at the top and wider at the bottom, the cavity of the hollow second truncated cone is wider at the top and narrower at the bottom, and the cavity of the hollow third truncated cone is narrower at the top and wider at the bottom. The cavities of the hollow second truncated cone and the hollow first truncated cone are aligned. The interior of the hollow first truncated cone also forms a first cavity. Several first openings are provided through the first cavity on the side of the first cavity near the cavity of the hollow first truncated cone. The outer walls of several second tubes are fixedly connected to the inner walls of the hollow first truncated cone. The other ends of several second tubes penetrate through the third cavity of the second shell to the outside of the second shell and are fixedly connected to the second shell. The several first openings, the first cavity, and the several second tubes are internally connected. The several second tubes are respectively located above several first rods of the second group.

[0013] A cutting process for a laser cutting machine used in thin film production includes the following steps: Step 1: Fix the laser tube on the moving stage, so that its laser emitting end faces the film, and press it against the surface of the film by pressing component to restrict the movement of the film when it is ready to be cut; Step 2: Start the external air supply equipment to make the blowing and suction components run. Use the air guiding component to divert the blowing force of the blowing and suction components. During this process, the adaptive mechanism automatically changes the force of the pressing component pressing on the film according to the change of the suction force of the blowing and suction components to ensure the stability of the film under the airflow. Step 3: Activate the laser tube. The laser beam emitted by the laser tube passes through the fourth cavity inside the support assembly to cut the film. At the same time, the laser tube moves along the X and Y axes of the moving stage above the film. The pressing assembly moves synchronously with the laser tube on the surface of the film without damaging the film. Step 4: During the laser tube's cutting of the thin film, the blowing and suction components continuously cool the cutting gap and simultaneously remove the waste generated during the cutting process, completing the non-destructive precision cutting of the entire thin film.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This laser cutting machine and cutting process for thin film production uses rolling friction instead of traditional sliding friction by setting up a pressing component and a first ball bearing. This ensures that the film can be continuously and smoothly pressed and fixed during the laser cutting process. At the same time, due to the extremely low friction, scratches or tears are avoided on the film surface, thus protecting the optical properties of the film. This laser cutting machine and cutting process for thin film production achieves automatic adjustment of pressing pressure through the linkage design of the adaptive mechanism and the air blowing and suction components: when the external air supply power is increased to cope with thicker or more difficult-to-cut films, some high-pressure gas will enter the second chamber, and the increased air pressure will push the first rod to automatically increase the pressing pressure on the film, thereby counteracting the shaking force brought by the strong airflow and ensuring the stability of the film under various processing intensities. The laser cutting machine and cutting process for this type of thin film production adopts a bellows-tube sealing structure and a second ball bearing guide design, which replaces the traditional piston lifting mode and eliminates unnecessary friction during the movement process. The laser cutting machine and cutting process used in this film production, through the damping micro-hole effect of the second port, enable the pressing component to rise and fall slowly and smoothly, avoiding the "up and down shaking" phenomenon caused by instantaneous pressure changes or pressure relief, and preventing the film from being damaged by impact. This laser cutting machine and cutting process for thin film production utilizes the special structure of the hollow truncated cone in the air guide assembly. On the one hand, the dynamic pressure is converted into static pressure through the fifth cavity, providing a stable air source for the adaptive mechanism. On the other hand, the hollow second truncated cone is used to instantaneously compress the airflow, making the airflow towards the cutting point stronger and more concentrated, improving cooling efficiency and dust removal effect, and ensuring clean and non-destructive processing of the cutting edge. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall appearance of the present invention; Figure 2 This is a schematic diagram of the overall appearance of the invention from another perspective; Figure 3 This is a schematic diagram of the overall appearance of the laser tube body of the present invention; Figure 4 This is a detailed connection diagram of the support assembly, the blowing and sucking assembly, and the pressing assembly of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the various components from another perspective; Figure 6 For the present invention Figure 4 First cross-sectional three-dimensional schematic diagram of each component; Figure 7 For the present invention Figure 6 Front view of each component; Figure 8 For the present invention Figure 6 Explosion diagrams of various components; Figure 9 For the present invention Figure 4 A three-dimensional schematic diagram of the second type of cross-section of each component; Figure 10 For the present invention Figure 9 Front view of each component; Figure 11 For the present invention Figure 9 Explosion diagrams of various components; Figure 12 This is a plan view of the pressing component and adaptive mechanism of the present invention.

[0016] In the picture: 1. Laser tube body; 2. Support assembly; 21. First housing; 211. Second cavity; 212. Third cavity; 213. Fourth cavity; 214. Second opening; 22. Second housing; 221. Fifth cavity; 222. Sixth cavity; 3. Blowing and suction assembly; 31. First tube body; 32. Second tube body; 4. Pressing assembly; 41. First rod; 42. First annular plate; 43. First ball bearing; 5. Air guiding assembly; 51. Hollow first truncated cone; 511. First cavity; 512. First port; 52. Hollow second truncated cone; 53. Hollow third truncated cone; 6. Adaptive mechanism; 61. Spring; 62. Plate; 63. Organ tube; 64. Guide assembly; 641. Block; 642. Second rod; 643. Third annular plate; 644. Second ball bearing; 65. Second annular plate. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Please see Figures 1-12 A laser cutting machine for thin film production, comprising: Laser tube 1 is fixedly connected to the moving platform of the laser cutting machine, and laser tube 1 can move along the X and Y axes above the laser cutting machine with the moving platform. The laser emitting end of laser tube 1 faces the thin film. The blowing and suction component 3 can cool the cutting gap when the laser tube 1 cuts the film, and can also suck out the waste generated during the cutting of the film. The blowing and suction component 3 can also change the suction force according to different film thicknesses and impurity viscosity and particle size. Support component 2, which can connect laser tube 1 and air blowing and suction component 3, and a fourth cavity 213 is formed inside the support component 2, the fourth cavity 213 being concentric with the laser beam of laser tube 1; The pressing component 4 can restrict the movement of the film when the laser beam of the laser tube 1 cuts the film, and the pressing component 4 can also move on the surface of the film without damaging the film during the movement of the laser tube 1 along the X and Y axes. The adaptive mechanism 6 can change the force of the pressing component 4 pressing on the film while the suction force of the blowing and sucking component 3 changes; It also includes an air guiding component 5, which can divert the blowing force of the air blowing and suction component 3; Specifically, the cutting process of this laser cutting machine for thin film production includes the following steps: Step 1: Fix the laser tube 1 on the moving stage, so that its laser emitting end faces the film, and press it against the surface of the film by pressing component 4 to restrict the movement of the film when it is ready to be cut; Step 2: Start the external air supply equipment to make the blowing and suction assembly 3 run. Use the air guide assembly 5 to divert the blowing force of the blowing and suction assembly 3. During this process, the adaptive mechanism 6 automatically changes the force of the pressing assembly 4 pressing on the film according to the change of the suction force of the blowing and suction assembly 3 to ensure the stability of the film under the airflow. Step 3: Activate laser tube 1. The laser beam emitted by it passes through the fourth cavity 213 inside the support assembly 2 to cut the film. At the same time, laser tube 1 moves above the film along the X and Y axes with the moving stage. Pressing assembly 4 moves synchronously with laser tube 1 on the surface of the film without damaging the film. Step 4: During the process of laser tube 1 cutting the thin film, the blowing and suction component 3 continuously cools the cutting gap and simultaneously sucks out the waste generated during the cutting of the thin film, thus completing the non-destructive precision cutting of the entire thin film.

[0019] Furthermore, it should be noted that the X and Y axes of the laser tube body 1, the moving stage, and the laser cutting machine are all mature technologies of existing laser cutting machines. This invention has not made any changes to their principles, positional relationships, or connection relationships, and all retain their original functions. They will not be described in detail here.

[0020] Furthermore, in order to enable the support assembly 2 to connect the laser tube 1 and the blowing and sucking assembly 3, as a preferred embodiment of the present invention, the support assembly 2 includes a first housing 21 and a second housing 22. The upper end of the first housing 21 is fixedly connected to the outer wall of the laser tube 1, the lower end of the first housing 21 is fixedly connected to the upper end of the second housing 22, the lower end of the second housing 22 faces the film, and the fourth cavity 213 is located inside the second housing 22. Specifically, such as Figure 6 and Figure 7 As shown, during use, the first housing 21 is installed and fixed on the outer wall of the laser tube 1, while reserving space for the laser beam of the laser tube 1 to pass through. This way, the first housing 21 and the second housing 22 can provide support for components such as the blowing and suction assembly 3, and will not hinder the normal cutting of the film by the laser tube 1.

[0021] Furthermore, in order to enable the blowing and suction assembly 3 to cool the cutting gap when the laser tube 1 cuts the film, and to also be able to suck out the waste generated during the cutting of the film, the blowing and suction assembly 3 can also change the suction force according to different film thicknesses and impurity viscosity and particle size. As a preferred embodiment of the present invention, the blowing and suction assembly 3 includes a plurality of first tubes 31 and a plurality of second tubes 32. One end of each of the plurality of first tubes 31 is fixedly connected to the upper end of the first housing 21, one end of each of the plurality of second tubes 32 is fixedly connected to one end of the second housing 22, the other end of each of the plurality of first tubes 31 is fixedly connected to the output end of an external air supply device, and the other end of each of the plurality of second tubes 32 is fixedly connected to the input end of the same external air supply device. Specifically, such as Figure 4 and Figure 5 As shown, before using this device, simply connect several first tubes 31 and several second tubes 32 to the output and input ends of an external air supply device (such as an air pump, which is an existing mature product and is not specifically limited). (The input end needs to be equipped with a corresponding filter device. Of course, two devices can be used directly, one device for air supply and one device for air intake, and is not specifically limited.) Then, when the laser tube 1 cuts the film, in order to quickly cool the cutting point of the film and simultaneously suck out the waste, simply turn on the external air supply device. After the external gas supply equipment is started, high-pressure gas can be supplied into the first housing 21. Then the gas enters the third cavity 212 of the second housing 22 from the first housing 21. After that, it can be blown towards the area near the laser beam cutting point of the laser tube 1, thereby quickly cooling the cutting edge of the film. At the same time, the high-pressure gas will also blow the tiny particles generated by the laser beam cutting the film off the film. As the blown dust disperses inside the second housing 22, it can be sucked away by the second tube 32 inside the second housing 22. It should be noted that since external gas supply equipment is a mature existing technology, and most current external gas supply equipment has the function of adjusting output and input power, when it is necessary to change the power of the external gas supply equipment, it can be adjusted manually or automatically with the help of a PLC controller. This is existing technology and will not be described in detail here.

[0022] Furthermore, in order to enable the pressing component 4 to restrict the movement of the film when the laser beam of the laser tube 1 cuts the film, and to enable the pressing component 4 to move on the film surface without damaging the film during the movement of the laser tube 1 along the X and Y axes, as a preferred embodiment of the present invention, the pressing component 4 includes a first annular plate 42, a plurality of first rods 41 and a plurality of first balls 43, and a third cavity 212 is formed inside the second housing 22. The third cavity 212 is an annular cavity and is concentric with the fourth cavity 213. The upper ends of the plurality of first rods 41 are all located inside the third cavity 212, and the lower ends of the plurality of first rods 41 all penetrate to the outside of the second housing 22 and are all fixedly connected to the first annular plate 42. The inner wall of the end of the plurality of first rods 41 located below the first annular plate 42 is respectively rolledly connected to the plurality of first balls 43, and the surfaces of the plurality of first balls 43 are all in contact with the film. Specifically, during use, the laser tube 1 faces the film but does not contact the film, while a number of first balls 43 rest on the surface of the film. When the laser tube 1 cuts the film, the number of first balls 43 can press and fix the film on the surface of the film onto the cutting platform of the cutting equipment (the cutting platform is existing technology and will not be described in detail here), thereby ensuring the stability of the film when the laser tube 1 cuts the film. Furthermore, when the laser tube 1 cuts the film, it moves along the XY axis on the film due to different cutting requirements. At this time, because several first balls 43 are pressed against the film surface and the first balls 43 are all fixed to the laser tube 1 by the first housing 21, it can be ensured that the first balls 43 can move synchronously with the laser tube 1. Therefore, the first balls 43 can keep moving on the film surface (its movement is similar to the lead of a ballpoint pen). This ensures that the first balls 43 continuously press and fix the film. Moreover, because the friction between the first balls 43 and the film is small, it is not easy to cause the film to tilt. It should be noted that although the thickness of different types of films may vary, the surface of the same type of film is smooth and without undulations. Therefore, although several first rods 41 are connected together by the first annular plate 42, several first rods 41 and several first balls 43 can move on the film at the same time. In this way, even if the laser tube 1 cuts to the edge of the film and some of the first balls 43 move to the outside of the film, when the laser tube 1 returns to the middle of the film, the first balls 43 that have moved to the outside of the film will not fall down on their own and cause jamming with the edge of the film.

[0023] Furthermore, in order to enable the adaptive mechanism 6 to change the force of the pressing component 4 pressing on the film while the suction force of the blowing and suction component 3 changes, as a preferred embodiment of the present invention, the adaptive mechanism 6 includes a second annular plate 65, a plurality of springs 61, a plurality of plates 62, a plurality of bellows tubes 63, and a plurality of guide components 64. The plurality of first rods 41 are at least evenly divided into two groups, and the plurality of first rods 41 in the two groups are staggered. The outer wall of the second annular plate 65 is fixedly connected to the inner wall of the third cavity 212. The second cavity 211 is separated from the third cavity 212 of the second housing 22 by the second annular plate 65. A plurality of third openings are provided through the surface of the second annular plate 65. The outer walls of the plurality of plates 62 are all fixedly connected to the inner wall of the second cavity 211. The bottom surfaces of the plurality of plates 62 are respectively fixedly connected to the upper ends of the plurality of springs 61. The upper ends of the plurality of bellows tubes 63 are all close to the second annular plate 65. One side of the three-cavity body 212 is fixedly connected. The lower ends of several springs 61 pass through several third openings and are fixedly connected to one end of several first rods 41 in the first group located in the third cavity 212. The lower ends of several organ pipes 63 are fixedly connected to one end of several first rods 41 in the first group located in the third cavity 212. One end of several guide components 64 is connected to one end of several organ pipes 63 near the first rod 41. The other end of several guide components 64 is connected to the inner wall of the third cavity 212. Several springs 61 are located inside several organ pipes 63. The upper end of the second cavity 211 is provided with several second openings 214. Several second openings 214 are all located inside the first housing 21 and below the first tube 31. The first housing 21, several second openings 214, the second cavity 211 and several organ pipes 63 are internally connected. More specifically, the guide assembly 64 includes a third annular plate 643, two blocks 641, four second rods 642, and two second balls 644. The inner wall of the third annular plate 643 is fixedly connected to the end of the organ pipe 63 near the first rod 41. The two second balls 644 are embedded in and rolled on the outer wall of the third annular plate 643. The sides of the two blocks 641 that are far apart from each other are fixedly connected to the two sides of the inner wall of the third cavity 212. The bottom surfaces of the two blocks 641 are fixedly connected to the upper ends of the four second rods 642. The lower ends of the four second rods 642 are fixedly connected to the bottom surface of the third cavity 212. One block 641 and two second rods 642 form a group. The two second balls 644 are located in the two groups of blocks 641 and second rods 642 respectively. First, it should be noted that during use, different films may have different thicknesses, different functional films, or different film surface coatings, which will lead to different laser intensities required for film cutting. Different laser intensities necessitate increased output and input power from the external air supply equipment. However, increased output and input power from the external air supply equipment will increase the shaking force during film cutting. Therefore, in order to ensure that the first rod 41 can simultaneously increase the pressing pressure on the film after the power of the external air supply equipment is increased, the specific steps are as follows: As the external gas supply equipment delivers high-pressure gas through the first tube 31 into the first housing 21, most of the high-pressure gas directly enters the third cavity 212 and is blown toward the laser cutting point. A small portion of the high-pressure gas enters the second cavity 211 through the second port 214, and then gradually accumulates inside the second cavity 211, thereby gradually increasing the gas pressure inside the second cavity 211. This allows the first rod 41 located at the third port of the third annular plate 643 to be gradually and slowly pushed. Then the first rod 41 begins to descend and begins to lengthen the organ tube 63 (the organ tube 63 must be made of a sealing material to prevent the gas in the second cavity 211 from communicating with the third cavity 212). Since the first ball bearing 43 at the bottom of the first rod 41 is pressed against the surface of the film, as the air pressure inside the second cavity 211 increases, the pressure of the first ball bearing 43 on the film will also increase as the first rod 41 descends, thus ensuring that even if the blowing force towards the film at the fourth cavity 213 increases, the film will not shift. It should be noted here that if the film is thick, or the film being cut is a product that is relatively easy to cut, or the film as a whole is large and not easy to deviate, the height of the laser tube 1 on the Z-axis can be adjusted so that the first ball 43 does not touch the film surface, thereby further reducing the friction between the first ball 43 and the film. Furthermore, since the first rod 41 needs to be raised and lowered, and the raising and lowering of the first rod 41 relies on the slight increase in air pressure inside the second cavity 211 to achieve this purpose, in order to avoid unnecessary contact between the first rod 41 and the second housing 22 during the raising and lowering of the first rod 41, which would increase friction, the first rod 41 is designed not to contact the second housing 22 (i.e., the third cavity 212 is connected to the external environment). The purpose of setting the organ pipe 63 is also to avoid the unnecessary friction of the traditional "piston" raising and lowering. At the same time, setting the second ball bearing 644 inside the two second rods 642 in the same group is also to reduce unnecessary friction when the first rod 41 is raised and lowered. Furthermore, since the high-pressure gas blown out from the first tube 31 enters the second cavity 211 through the second port 214, and the second cavity 211 is only connected to the external environment through the second port 214, the air pressure inside the second cavity 211 gradually and slowly increases. This avoids the situation where the second cavity 211 reaches its pressure peak and causes instantaneous pressure relief (the pressure will only return from the second cavity 211 to the fourth cavity 213 through the second port 214 after the pressure of the external air supply equipment decreases), thus preventing the first rod 41 from "shaking up and down". This avoids the situation where the first rod 41 shakes up and down and damages the membrane.

[0024] Furthermore, in order to enable the air guiding component 5 to divert the blowing force of the air blowing and suction component 3, as a preferred embodiment of the present invention, the air guiding component 5 includes a hollow first truncated cone 51, a hollow second truncated cone 52, and a hollow third truncated cone 53. The lower end of the hollow third truncated cone 53 is fixedly connected to the upper surface of the second housing 22. The hollow third truncated cone 53 is located inside the first housing 21, and the hollow third truncated cone 53 separates the first housing 21 into a fifth cavity 221 and a sixth cavity 222. The fifth cavity 221 and the sixth cavity 222... All six cavities 222 are located below the first tube 31. The outer wall of the hollow second truncated cone 52 is fixedly connected to the lower end of the fourth cavity 213. The bottom surface of the hollow second truncated cone 52 is fixedly connected to the upper end of the hollow first truncated cone 51. The hollow first truncated cone 51, the hollow second truncated cone 52 and the hollow third truncated cone 53 are all concentric with the laser beam of the laser tube 1. The first tube 31, the fifth cavity 221 and the second port 214 are connected. The first tube 31, the sixth cavity 222 and the fourth cavity 213 are connected. More specifically, the cross-sections of the internal cavities of the hollow first truncated cone 51, the hollow second truncated cone 52, and the hollow third truncated cone 53 are all trapezoidal on their first surface, which is perpendicular to the horizontal plane. The cavity of the hollow first truncated cone 51 is narrower at the top and wider at the bottom, the cavity of the hollow second truncated cone 52 is wider at the top and narrower at the bottom, and the cavity of the hollow third truncated cone 53 is narrower at the top and wider at the bottom. Furthermore, the cavities of the hollow second truncated cone 52 and the hollow first truncated cone 51 are aligned. A first cavity 511 is also formed inside the hollow first truncated cone 51. 11 A plurality of first openings 512 are provided through one side of the cavity of the hollow first cone 51. The outer walls of the plurality of second tubes 32 are fixedly connected to the inner wall of the hollow first cone 51. The other ends of the plurality of second tubes 32 penetrate through the third cavity 212 of the second housing 22 to the outside of the second housing 22 and are fixedly connected to the second housing 22. The plurality of first openings 512, first cavities 511 and the plurality of second tubes 32 are internally connected. The plurality of second tubes 32 are respectively located above the plurality of first rods 41 of the second group. Specifically, when high-pressure gas is blown out of the first tube 31, in order to avoid the Bernoulli principle and Venturi effect, the second port 214 needs to be located closer to the first tube 31. Because the hollow third cone 53 separates the first shell 21 into the fifth cavity 221 and the sixth cavity 222, a portion of the high-pressure gas will experience a sudden decrease in velocity and become static pressure when entering the fifth cavity 221. Furthermore, the static pressure in the fifth cavity 221 gradually increases to a level greater than the static pressure in the second cavity 211, and then... The body can pass through the second port 214 into the second cavity 211, thereby gradually and slowly increasing the pressure in the second cavity 211. Conversely, when the air pressure in the first tube 31 decreases, the static pressure at the fifth cavity 221 decreases, and the pressure in the second cavity 211 can return to the fifth cavity 221 through the second port 214 and gradually return to the initial air pressure level. Moreover, because of the "damping micro-hole" of the second port 214, the first rod 41 can move slowly throughout the process without sudden and frequent up and down fluctuations. In addition, after another part of the high-pressure gas enters the fourth cavity 213 through the sixth cavity 222, because the cavity of the hollow first truncated cone 51 is narrow at the top and wide at the bottom, and the cavity of the hollow second truncated cone 52 is wide at the top and narrow at the bottom, this part of the gas will be instantly compressed at the end of the hollow second truncated cone 52 near the hollow first truncated cone 51. This not only makes the air force sprayed towards the laser cutting point greater and more concentrated, but also further restricts the amount of gas that is discharged, so that the other part of the gas can more smoothly increase the static pressure in the fifth cavity 221. Then, this gas is blown from the bottom of the fourth cavity 213 to the cutting point where the film is cut by the laser tube 1 beam, and the dust generated at the cutting point is blown into the cavity of the hollow first cone 51. Then, the dust is attracted by the second tube 32, passes through the first port 512 and enters the first cavity 511, and finally exits from the second tube 32 to the filter structure of the external gas supply equipment for filtration.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting machine for thin film production, characterized in that, include: The laser tube (1) is fixedly connected to the moving platform of the laser cutting machine, and the laser tube (1) can move along the X and Y axes above the laser cutting machine with the moving platform. The laser emitting end of the laser tube (1) faces the thin film. The blowing and suction assembly (3) can cool the cutting gap when the laser tube (1) cuts the film, and the blowing and suction assembly (3) can also suck out the waste generated when the laser tube (1) cuts the film. The blowing and suction assembly (3) can also change the suction force according to different film thicknesses and impurity viscosity and particle size. The support assembly (2) is capable of connecting the laser tube body (1) and the blowing and sucking assembly (3), and a fourth cavity (213) is formed inside the support assembly (2), the fourth cavity (213) being concentric with the laser beam of the laser tube body (1); The pressing component (4) can restrict the movement of the film when the laser beam of the laser tube (1) cuts the film, and the pressing component (4) can also move on the surface of the film without damaging the film during the movement of the laser tube (1) along the X and Y axes. The adaptive mechanism (6) can change the force of the pressing component (4) pressing on the film while the suction force of the blowing and sucking component (3) changes.

2. The laser cutting machine for thin film production according to claim 1, characterized in that, It also includes an air guide assembly (5) which can divert the blowing force of the air blowing assembly (3).

3. A laser cutting machine for thin film production according to claim 2, characterized in that, The support assembly (2) includes a first housing (21) and a second housing (22). The upper end of the first housing (21) is fixedly connected to the outer wall of the laser tube (1), and the lower end of the first housing (21) is fixedly connected to the upper end of the second housing (22). The lower end of the second housing (22) faces the thin film, and the fourth cavity (213) is located inside the second housing (22).

4. A laser cutting machine for thin film production according to claim 3, characterized in that, The blowing and sucking assembly (3) includes a plurality of first tubes (31) and a plurality of second tubes (32). One end of each of the plurality of first tubes (31) is fixedly connected to the upper end of the first housing (21). One end of each of the plurality of second tubes (32) is fixedly connected to one end of the second housing (22). The other end of each of the plurality of first tubes (31) is fixedly connected to the output end of an external air supply device. The other end of each of the plurality of second tubes (32) is fixedly connected to the input end of the same external air supply device.

5. A laser cutting machine for thin film production according to claim 4, characterized in that, The pressing assembly (4) includes a first annular plate (42), a plurality of first rods (41) and a plurality of first balls (43). The interior of the second housing (22) also forms a third cavity (212). The third cavity (212) is an annular cavity and is concentric with the fourth cavity (213). The upper ends of the plurality of first rods (41) are all located inside the third cavity (212). The lower ends of the plurality of first rods (41) all penetrate to the outside of the second housing (22) and are fixedly connected to the first annular plate (42). The inner wall of the end of the plurality of first rods (41) located below the first annular plate (42) is respectively rolledly connected to the plurality of first balls (43). The surfaces of the plurality of first balls (43) all abut against the film.

6. A laser cutting machine for thin film production according to claim 5, characterized in that, The adaptive mechanism (6) includes a second annular plate (65), several springs (61), several plates (62), several bellows tubes (63), and several guide components (64). Several first rods (41) are divided into at least two groups, and the several first rods (41) in the two groups are staggered. The outer wall of the second annular plate (65) is fixedly connected to the inner wall of the third cavity (212). The second cavity (211) of the second housing (22) is separated from the third cavity (212) by the second annular plate (65). Several third openings are provided through the surface of the second annular plate (65). The outer walls of several plates (62) are fixedly connected to the inner wall of the second cavity (211). The bottom surfaces of several plates (62) are fixedly connected to the upper ends of several springs (61). The upper ends of several bellows tubes (63) are fixedly connected to the side of the second annular plate (65) near the third cavity (212). The lower ends of several springs (61) are respectively connected to several third openings. The third port is fixedly connected to one end of each of the first rods (41) in the first group located in the third cavity (212). The lower ends of the organ pipes (63) are fixedly connected to one end of each of the first rods (41) in the first group located in the third cavity (212). One end of each of the guide components (64) is connected to one end of each organ pipe (63) near the first rod (41). The other end of each guide component (64) is connected to the third cavity (212). The inner wall of the second cavity (211) is connected to the first housing (21), and the springs (61) are respectively located inside the first tube (63). The upper end of the second cavity (211) is provided with a number of second ports (214). The number of second ports (214) are all located inside the first housing (21), and the number of second ports (214) are all located below the first tube (31). The first housing (21), the number of second ports (214), the second cavity (211) and the number of organ tubes (63) are connected.

7. A laser cutting machine for thin film production according to claim 6, characterized in that, The guide assembly (64) includes a third annular plate (643), two blocks (641), four second rods (642), and two second balls (644). The inner wall of the third annular plate (643) is fixedly connected to one end of the organ pipe (63) near the first rod (41). The two second balls (644) are embedded in and rolled on the outer wall of the third annular plate (643). The two blocks (641) are fixedly connected to the two sides of the inner wall of the third cavity (212) on opposite sides. The bottom surfaces of the two blocks (641) are fixedly connected to the upper ends of the four second rods (642). The lower ends of the four second rods (642) are fixedly connected to the bottom surface of the third cavity (212). One block (641) and two second rods (642) form a group. The two second balls (644) are located in the two groups of blocks (641) and second rods (642), respectively.

8. A laser cutting machine for thin film production according to claim 7, characterized in that, The air guiding assembly (5) includes a hollow first truncated cone (51), a hollow second truncated cone (52), and a hollow third truncated cone (53). The lower end of the hollow third truncated cone (53) is fixedly connected to the upper surface of the second housing (22). The hollow third truncated cone (53) is located inside the first housing (21), and the hollow third truncated cone (53) separates the first housing (21) into a fifth cavity (221) and a sixth cavity (222). The fifth cavity (221) and the sixth cavity (222) are both located below the first tube (31). The outer wall of the hollow second truncated cone (52) is fixedly connected to the lower end of the fourth cavity (213). The bottom surface of the hollow second truncated cone (52) is fixedly connected to the upper end of the hollow first truncated cone (51). The hollow first truncated cone (51), the hollow second truncated cone (52) and the hollow third truncated cone (53) are all concentric with the laser beam of the laser tube (1). The first tube (31), the fifth cavity (221) and the second port (214) are connected. The first tube (31), the sixth cavity (222) and the fourth cavity (213) are connected.

9. A laser cutting machine for thin film production according to claim 8, characterized in that, The cross-sections of the internal cavities of the hollow first truncated cone (51), hollow second truncated cone (52), and hollow third truncated cone (53) are all trapezoidal on the first surface, which is perpendicular to the horizontal plane. The cavity of the hollow first truncated cone (51) is narrower at the top and wider at the bottom, the cavity of the hollow second truncated cone (52) is wider at the top and narrower at the bottom, and the cavity of the hollow third truncated cone (53) is narrower at the top and wider at the bottom. The cavities of the hollow second truncated cone (52) and the hollow first truncated cone (51) are aligned. A first cavity (511) is also formed inside the hollow first truncated cone (51). The first cavity (511) is close to... A plurality of first openings (512) are provided through one side of the cavity of the hollow first cone (51). The outer walls of the plurality of second tubes (32) are fixedly connected to the inner wall of the hollow first cone (51). The other ends of the plurality of second tubes (32) penetrate through the third cavity (212) of the second shell (22) to the outside of the second shell (22) and are fixedly connected to the second shell (22). The plurality of first openings (512), the first cavity (511) and the plurality of second tubes (32) are connected internally. The plurality of second tubes (32) are respectively located above the plurality of first rods (41) of the second group.

10. The cutting process of a laser cutting machine for thin film production according to claim 9, comprising the following steps: Step 1: Fix the laser tube (1) on the moving stage, so that its laser emitting end faces the film, and press it against the surface of the film by pressing component (4) to restrict the movement of the film when it is ready to be cut; Step 2: Start the external air supply equipment to make the blowing and suction assembly (3) run. Use the air guide assembly (5) to divert the blowing force of the blowing and suction assembly (3). During this process, the adaptive mechanism (6) automatically changes the force of the pressing assembly (4) on the film according to the change of the suction force of the blowing and suction assembly (3) to ensure the stability of the film under the airflow. Step 3: Start the laser tube (1), and the laser beam emitted by it passes through the fourth cavity (213) inside the support assembly (2) to cut the film. At the same time, the laser tube (1) moves above the film along the X and Y axes with the moving stage. The pressing assembly (4) moves synchronously with the laser tube (1) on the surface of the film without damaging the film. Step 4: During the process of laser tube (1) cutting the film, the blowing and suction assembly (3) continuously cools the cutting gap and simultaneously sucks out the waste generated during the cutting of the film, thus completing the non-destructive precision cutting of the entire film.

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