Vacuum film pasting device

Abstract

The utility model discloses a vacuum film pasting device which comprises a film supplying mechanism and a vacuum film pressing mechanism, and the vacuum film pressing mechanism comprises a film pressing assembly, a carrying table assembly and a vacuumizing assembly. The carrying table assembly is arranged between the film pressing assembly and the vacuumizing assembly and used for carrying the film pasting element; the film pressing assembly is movably connected with the carrying table assembly and used for covering the surface of the film pasting element on the carrying table assembly with the film material provided by the film supply mechanism, and the film pressing assembly is in butt joint with the carrying table assembly to form a film pasting space; the vacuumizing assembly is connected with the carrying table assembly, communicates with the film pasting space and is used for providing a vacuum environment for the film pasting space; the vacuum film pasting device further comprises a film cutting mechanism, and the film cutting mechanism is arranged on the film pressing assembly and used for separating a film material covering the film pasting element from surrounding residual films. According to the vacuum film pasting device, mechanical film material supply and vacuum film covering are achieved, bubbles are avoided, the film pasting effect is good, residual films are automatically cut off after film pasting is completed, the labor cost is reduced, and the film pasting efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of chips, and in particular to a vacuum film bonding device. Background Technology

[0002] Vacuum lamination technology is a key process in semiconductor manufacturing, electronic assembly, and other fields requiring precise film bonding. In high-precision applications such as chip packaging and flexible circuit board fabrication, even more stringent requirements are placed on the performance of lamination equipment.

[0003] The existing equipment has the following drawbacks: the existing vacuum lamination device's lamination and winding system is not flexible enough and it is not convenient to collect the cut lamination. When laminating the chips, the lamination needs to be pulled flat before being attached to the chips, which takes a lot of time to adjust the lamination. The lamination efficiency is low and the effect is not good, which affects the processing efficiency of chip lamination. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a vacuum film-applying device that can integrate film supply, vacuum film application and film cutting, thereby improving the film application effect and efficiency.

[0005] To address the aforementioned technical problems, this utility model provides a vacuum film-applying device, comprising a film supply mechanism and a vacuum pressing mechanism. The vacuum pressing mechanism includes a pressing assembly, a platform assembly, and a vacuum extraction assembly. The platform assembly is disposed between the pressing assembly and the vacuum extraction assembly, and is used to support the film-applying element. The pressing assembly is movably connected to the platform assembly, and is used to cover the surface of the film-applying element on the platform assembly with the film provided by the film supply mechanism, forming a film-applying space. The vacuum extraction assembly is connected to the platform assembly and communicates with the film-applying space, providing a vacuum environment to the film-applying space. The vacuum film-applying device further includes a film-cutting mechanism disposed on the pressing assembly, used to separate the film covering the film-applying element from surrounding residual film.

[0006] In one feasible implementation, the vacuum film-applying device further includes a frame for mounting the film supply mechanism and the vacuum pressing mechanism. The pressing assembly is slidably connected to the frame and includes a base plate and a top plate. The platform assembly is fixedly connected to the frame and includes a bottom frame and a placement platform. The film material passes through the bottom plate and the top plate. A first sealing ring is provided on the side of the bottom plate away from the top plate, and the first sealing ring is used to abut against the bottom frame. The placement platform has a plurality of vacuum holes, and the bottom frame has a suction port. The plurality of vacuum holes communicate with the vacuum assembly through the suction port, and the vacuum holes are located within the boundary range of the first sealing ring.

[0007] In one feasible implementation, the bottom frame is further provided with a second sealing ring, which surrounds the placement platform. When the first sealing ring abuts against the bottom frame, the second sealing ring abuts against the bottom plate, and the outer edge of the first sealing ring abuts against the inner edge of the second sealing ring.

[0008] In one feasible implementation, the film cutting mechanism includes a limiting rod fixed to the top plate on the side away from the bottom plate, a pressing plate fixed to the limiting rod, and a cutter fixed to the pressing plate on the side near the film pressing assembly. A moving groove corresponding to the cutter is formed on the top plate.

[0009] In one feasible implementation, the film cutting mechanism further includes an elastic element disposed on the limiting rod and located between the pressing plate and the top plate.

[0010] In one feasible implementation, a sealing groove is formed at the position of the bottom frame corresponding to the first sealing ring.

[0011] In one feasible implementation, the top plate and the bottom plate are detachably connected.

[0012] In one feasible implementation, the film pressing assembly further includes an upper clamping plate and a lower clamping plate, wherein the lower clamping plate and the upper clamping plate are disposed between the bottom plate and the top plate.

[0013] In one feasible implementation, the vacuum pressing mechanism further includes a guide assembly disposed between the stage assembly and the pressing assembly. The guide assembly includes a plurality of guide rods arranged in a vertical direction, and the pressing assembly has guide holes for the guide rods to pass through.

[0014] In one feasible implementation, the film supply mechanism includes an unwinding roller and a winding roller. The film material is continuously unwound from the unwinding roller, coated by the vacuum pressing mechanism and cut by the film cutting mechanism, and then the remaining film is wound up by the winding roller. A rotating rod is provided on one side of the winding roller.

[0015] Implementing this utility model has the following beneficial effects:

[0016] The vacuum laminating device provided in this application embodiment consists of a film supply device that supplies film, a vacuum laminating mechanism that applies vacuum film to the product, and a film cutting mechanism that cuts the film after lamination to separate residual film. This achieves mechanical film supply, vacuum lamination, avoids air bubble formation, results in good lamination effect, and automatically removes residual film after lamination, realizing mechanized operation, reducing labor costs, and improving the efficiency and effectiveness of lamination.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0019] Figure 1 This is an exemplary three-dimensional structural schematic diagram of a vacuum film application device shown in some embodiments of this application;

[0020] Figure 2 yes Figure 1 A top view of the vacuum film application device shown;

[0021] Figure 3 yes Figure 1 The above is a front view of the vacuum film application device.

[0022] Figure 4 yes Figure 1 Side view of the vacuum film application device shown;

[0023] Figure 5 yes Figure 1 A three-dimensional structural diagram of the vacuum film application device shown from a bottom-view angle;

[0024] Figure 6 yes Figure 1 The diagram shows a partial explosion of the vacuum film application device.

[0025] Figure 7 This is an exploded view of the film pressing assembly and film supply mechanism of the vacuum film applicator shown in some embodiments of this application;

[0026] Figure 8 This is an exploded schematic diagram of the film-pressing assembly of a vacuum film-applying device shown in some embodiments of this application.

[0027] The reference numerals in the figure:

[0028] 1-Frame; 11-Support platform; 12-Guide rod; 2-Film pressing assembly; 21-Base plate; 211-Connecting plate; 21101-Guide hole; 212-Handle; 2121-Fixing plate; 213-First sealing ring; 22-Top plate; 2201-Moving groove; 23-Lower clamping plate; 24-Upper clamping plate; 25-Film cutting mechanism; 251-Cutter; 252-Pressing plate; 253-Limiting rod; 254-Elastic element; 3-Platform assembly; 31-Base frame; 3101-Sealing groove; 32-Vacuum assembly; 33-Placement platform; 34-Second sealing ring; 4-Film supply mechanism; 41-Support frame; 42-Mounting plate; 43-Unwinding roller; 44-Rewinding roller; 45-Rotating rod; 46-Film material. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Please refer to Figures 1 to 8 This application provides a vacuum laminating device for laminating chips or electronic products. The chip can be a wafer chip, etc. The vacuum laminating device includes a film supply mechanism 4 and a vacuum pressing mechanism. The film supply mechanism 4 provides film material 46 to the vacuum pressing mechanism. The vacuum pressing mechanism includes a pressing assembly 2, a stage assembly 3, and a vacuum pumping assembly 32. The stage assembly 3 is disposed between the pressing assembly 2 and the vacuum pumping assembly 32 and is used to support the laminating element. The pressing assembly 2 is movably connected to the stage assembly 3 and is used to cover the surface of the laminating element on the stage assembly 3 with the film material 46 provided by the film supply mechanism 4, forming a laminating space with the stage assembly 3. The vacuum pumping assembly 32 is connected to the stage assembly 3 and communicates with the laminating space to provide a vacuum environment to the laminating space. The vacuum laminating device also includes a film cutting mechanism 25, which is disposed on the pressing assembly 2 and is used to separate the film material 46 covering the laminating element from surrounding residual film.

[0035] The vacuum film-applying device provided in this embodiment consists of a film supply device, a vacuum film-pressing mechanism 2 for vacuum film application on the product, and a film-cutting mechanism 25 for cutting the film material 46 after film application, separating the residual film. This achieves automatic film supply, automatic vacuum film application, good film application effect, and automatic removal of residual film after application, realizing mechanized operation, reducing labor costs, and improving the efficiency and effectiveness of film application.

[0036] When the vacuum laminating device provided in this embodiment performs chip lamination, the chip is placed on the side of the stage assembly 3 near the lamination assembly 2, with the chip's lamination-to-be-applied surface facing the lamination assembly 2. The film material 46 is supplied into the lamination assembly 2 by the film supply mechanism 4, and the lamination assembly 2 moves the film material 46 towards the stage assembly 3. The lamination assembly 2 and the film material 46 dock with the stage assembly 3 to form a lamination space, within which the chip is located. The vacuum assembly 32 operates to create a vacuum in the lamination space, and the lamination assembly 2 covers the chip with the film material 46 for lamination. After lamination, the film cutting mechanism 25 on the lamination assembly 2 cuts the film material 46 at the outer edge of the chip, separating the film material 46 covering the lamination element from the surrounding residual film, thus automatically cutting the film. Vacuuming ensures that no air bubbles are generated during chip lamination, thereby significantly improving lamination accuracy and production efficiency. The automatic cutting mechanism has high precision, further improving lamination efficiency.

[0037] In one feasible embodiment, the vacuum laminating device further includes a frame 1 for mounting the film supply mechanism 4 and the vacuum pressing mechanism. The pressing assembly 2 is slidably connected to the frame 1, and the platform assembly 3 is fixedly connected to the frame 1. Thus, the pressing assembly 2, being slidably connected to the frame 1, can move up and down relative to the frame 1, moving closer to or further away from the platform assembly 3 to form a laminating space, and to apply the film after vacuuming. The frame 1 improves the overall structural integrity of the vacuum laminating device, facilitates its movement, assembly, and transportation, enhances operational stability, reduces the need for precision adjustments during docking, and improves laminating efficiency and accuracy.

[0038] In one feasible implementation, the pressure film assembly 2 can also be moved and docked by other mechanisms, such as a linear module, to approach or move away from the vacuum assembly 32.

[0039] In one feasible embodiment, the pressing assembly 2 includes a base plate 21 and a top plate 22. The platform assembly 3 includes a base frame 31 and a placement platform 33. The platform assembly 3 can be fixedly connected to the frame 1 via a support platform 11. The support platform 11 is fixedly connected to the frame 1.

[0040] The membrane material 46 is inserted between the base plate 21 and the top plate 22. A first sealing ring 213 is provided on the side of the base plate 21 away from the top plate 22, and the first sealing ring 213 abuts against the base frame 31. The placement platform 33 has several vacuum holes, and the base frame 31 has an air extraction port. The vacuum holes communicate with the vacuum assembly 32 through the air extraction port, and the vacuum holes are located within the boundary range of the first sealing ring 213. Thus, the base plate 21 and the top plate 22 clamp the membrane material 46, forming a chamber with an opening facing the platform assembly 3, and the outer periphery of the chamber can mate with the platform assembly 3. Simultaneously, the first sealing ring 213 of the placement platform 33 seals the outer periphery of the chamber, forming a film-applying space. The product on the platform assembly 3 is accommodated in the film-applying space or the chamber through this opening. The vacuum hole on the placement platform 33 is connected to the vacuum assembly 32, allowing air in the film application space to enter the vacuum assembly 32 only through the vacuum hole, thus creating a vacuum environment. This prevents air bubbles from forming during the film application process and ensures the flatness and tension of the film material 46. This design of the film pressing assembly 2 and the platform assembly 3 is simple in structure, easy to assemble, and provides good sealing performance. Furthermore, the air extraction port can be located in the middle of the side of the bottom frame 31 away from the placement platform 33, facilitating uniform air extraction and improving the vacuuming effect and efficiency.

[0041] In one feasible implementation, the air extraction port may also be located on the side or bottom of the base frame 31, which will not be described in detail here.

[0042] In one feasible embodiment, a second sealing ring 34 is further provided on the bottom frame 31. The second sealing ring 34 is arranged around the placement platform 33. When the first sealing ring 213 abuts against the bottom frame 31, the second sealing ring 34 abuts against the bottom plate 21, and the outer edge of the first sealing ring 213 abuts against the inner edge of the second sealing ring 34. The first sealing ring 213 and the second sealing ring 34 work together to form two sealing barriers. Even if one seal fails, the other can still maintain a certain sealing effect, greatly reducing the risk of leakage. When the first sealing ring 213 abuts against the bottom frame 31, the second sealing ring 34 simultaneously abuts against the bottom plate 21, and the outer edge of the first sealing ring 213 abuts against the inner edge of the second sealing ring 34, ensuring a tight fit between the two sealing rings and enhancing the overall sealing performance. The double seal can compensate to a certain extent for slight deformation of components caused by temperature changes, pressure fluctuations, or mechanical vibration, ensuring the effectiveness of the seal. By dispersing the sealing force, excessive pressure on a single sealing point is avoided, reducing the possibility of damage to the sealing ring due to excessive compression. The dual-sealing structure better adapts to different working conditions, including high pressure and high / low temperature environments, improving the system's adaptability and flexibility. Because the load is distributed across two sealing rings, each ring experiences less pressure, thus slowing down wear and extending the service life of the seals. Furthermore, the second sealing ring 34 further enhances the sealing between the membrane assembly 2 and the base frame 31, improving the vacuuming effect, preventing air bubbles during film application, and ensuring the flatness and tension of the membrane material 46.

[0043] In one feasible implementation, a sealing groove 3101 is formed on the bottom frame 31 at a position corresponding to the first sealing ring 213. When the pressure film assembly 2 docks with the platform assembly 3, the first sealing ring 213 is accommodated within the sealing groove 3101. The sealing groove 3101 provides a fixed installation position for the first sealing ring 213, allowing the sealing ring to fit more tightly at the interface, thereby improving the sealing effect. The sealing groove 3101 can better control the pre-compression of the sealing ring, ensuring that it maintains appropriate elastic deformation after assembly to achieve a good sealing effect. The sealing groove 3101 can protect the sealing ring, reducing the impact of external factors (such as mechanical damage, chemical corrosion, etc.) on the sealing ring. By forming the sealing groove 3101, the compression of the first sealing ring 213 and the second sealing ring 34 can be adjusted, further providing a double protection effect and improving the sealing effect.

[0044] In one feasible embodiment, the film cutting mechanism 25 includes a limiting rod 253 fixed to the upper end of the top plate 22, a pressing plate 252 passing through the limiting rod 253, and a cutter 251 fixed to the lower end of the pressing plate 252 for cutting the film material 46. A moving groove 2201 is provided on the top plate 22 at a position corresponding to the cutter 251, allowing the cutter 251 to move. The limiting rod 253 stably fixes the pressing plate 252 to the top plate 22, ensuring that the cutter 251 maintains a stable movement trajectory during the cutting process, reducing shaking and deviation during cutting, and improving the accuracy and stability of the cutting. The cutter 251 is fixed to the lower end of the pressing plate 252 and moves on the top plate 22 via the moving groove 2201, achieving precise cutting of the film material 46.

[0045] In one feasible implementation, the portion of the limiting rod 253 located between the pressing plate 252 and the top plate 22 is fitted with an elastic element 254. By providing the elastic element 254, after cutting, the elastic element 254 can also help the pressing plate 252 and the cutter 251 quickly return to their original positions, preparing for the next cut. Furthermore, the elastic element 254 can be made of a damped spring or an elastic pad. The damped spring or elastic pad can provide effective cushioning during the resetting process of the pressing plate 252 and the cutter 251, reducing impact force and thus protecting the equipment and extending its service life. The damping characteristics ensure that the pressing plate 252 and the cutter 251 smoothly return to their initial positions, avoiding violent vibrations caused by rapid resetting and improving operational safety. The damping effect helps to more precisely control the movement of the pressing plate 252 and the cutter 251, especially during the resetting phase, ensuring that they accurately return to their predetermined positions before each cut, improving the consistency and accuracy of the cut. Elastic pads or damped springs effectively suppress excessive movement during the reset process, reducing the wobbling of the pressing plate 252 and the cutter 251, thereby improving cutting quality. Damped springs automatically adjust their response characteristics according to different workloads, providing a more stable and reliable reset force, suitable for a wider range of applications. Damping materials absorb noise generated during movement, making the equipment operate more quietly and improving the working environment. Reduced impact and wear make critical components such as the pressing plate 252, cutter 251, and support structure less prone to damage, extending the service life of the entire device.

[0046] In one feasible implementation, the top plate 22 is detachably connected to the bottom plate 21. The top plate 22 is detachably mounted on the upper end of the bottom plate 21. This design facilitates quick replacement or adjustment of the top plate 22 to accommodate different sizes or types of membrane materials 46.

[0047] In one feasible embodiment, the pressing assembly 2 further includes an upper clamping plate 24 and a lower clamping plate 23, wherein the lower clamping plate 23 and the upper clamping plate 24 are disposed between the bottom plate 21 and the top plate 22 (22). The lower clamping plate 23 and the upper clamping plate 24 work together to provide a stable clamping force to the membrane material 46, ensuring that the membrane material 46 remains flat during cutting, pressing or other processing and will not shift or deform due to external forces.

[0048] In one feasible embodiment, the vacuum lamination mechanism further includes a guide assembly. The guide assembly is disposed between the platform assembly 3 and the lamination assembly 2. The guide assembly includes a plurality of guide rods 1212 arranged vertically. The lamination assembly 2 has guide holes 21101 for the guide rods 12 to pass through. The guide rods 12 on the support platform 11 provide precise guidance for the lamination mechanism 2, ensuring that the bottom plate 21 and top plate 22 can move stably and accurately along the guide rods 12, which helps maintain the flatness and positional accuracy of the film material 46 during the lamination process, thereby improving the lamination quality. The guide holes 21101 provide a precise movement path for the guide rods 12. When the top plate 22 moves up and down along the guide rods 12, the guide holes 21101 ensure that the movement trajectory of the top plate 22 always remains consistent with the guide rods 12, thereby avoiding errors or damage caused by deviation.

[0049] In one feasible implementation, specifically, connecting plates 211 are fixed to both sides of the base plate 21. A handle 212 is provided on the side of the connecting plate 211 away from the base plate 21, and a fixing plate 2121 for pressing the top plate 22 is provided on the side of the handle 212 closer to the base plate 21. The handle 2122 allows the operator to easily grip and move the entire pressing mechanism 2, improving the ease of operation. The fixing plate 2121 is located on the side of the handle 212 closer to the base plate 21. When the operator grips the handle 212, the fixing plate 2121 will naturally press the top plate 22, thereby realizing the adjustment of the installation position of the top plate 22.

[0050] In one embodiment,

[0051] In one feasible embodiment, the film supply mechanism 4 includes an unwinding roller 43 and a winding roller 44. The film material 46 is continuously unwound from the unwinding roller 43, coated by the vacuum pressing mechanism, and cut by the film cutting mechanism 25. The remaining film is then wound up by the winding roller 44. A rotating rod 45 is provided on one side of the winding roller 44. The coating and winding device 4 includes a support frame 41 fixed on the base plate 21, a mounting plate 42 symmetrically arranged about the base plate 21 on the upper end of the support frame 41, an unwinding roller 43 on one mounting plate 42, and a winding roller 44 on the other mounting plate 42. The coated film 46 is sleeved on the unwinding roller 43 and the winding roller 44. A rotating rod 45 is provided on one side of the winding roller 44. The unwinding roller 43 and the take-up roller 44 are respectively mounted on different mounting plates 42, and the film material 46 is sleeved on these two rollers, so that the unwinding and take-up processes can be carried out smoothly, reducing the resistance of the film material 46 during the transmission process and improving the working efficiency of chip film application. The setting of the rotating rod 45 allows the take-up roller 44 to rotate easily, thereby realizing the take-up operation of the film material 46.

[0052] In one feasible implementation, the width of the film material 46 is greater than the width of the cutter 251. When the cutter 251 cuts the film material 46, the middle part of the film material 46 is cut off, and the edges are connected. Then, the rotating rod 45 is rotated to make the take-up roller 44 rotate and the edges of the cut film material 46 are taken up. When subsequent chip film application is required, the take-up roller 44 is rotated to move the unused film material 46 to the top of the chip for film application. Compared with the previous method of manually attaching the film material 46 to the chip, this device can greatly improve the chip pressing efficiency.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vacuum film application device, characterized in that, It includes a film supply mechanism and a vacuum pressing mechanism, wherein, The vacuum pressing mechanism includes a pressing assembly, a stage assembly, and a vacuum pumping assembly; The stage assembly is disposed between the film pressing assembly and the vacuuming assembly, and is used to support the film-applying element; The film pressing assembly is movably connected to the platform assembly and is used to cover the surface of the film-applying element on the platform assembly with the film material provided by the film supply mechanism, and to dock with the platform assembly to form a film-applying space. The vacuum pumping component is connected to the stage component and communicates with the film application space, and is used to provide a vacuum environment for the film application space; The vacuum film application device also includes a film cutting mechanism, which is disposed on the film pressing assembly and is used to separate the film material covering the film application element from the surrounding residual film.

2. The vacuum film application device according to claim 1, characterized in that, The vacuum film application device further includes a frame for mounting the film supply mechanism and the vacuum pressing mechanism. The pressing assembly is slidably connected to the frame and includes a base plate and a top plate. The platform assembly is fixedly connected to the frame and includes a base frame and a placement platform. The membrane material is inserted between the bottom plate and the top plate, and a first sealing ring is provided on the side of the bottom plate away from the top plate. The first sealing ring is used to abut against the bottom frame. The placement platform is provided with a plurality of vacuum holes, and the bottom frame is provided with an air extraction port. The plurality of vacuum holes are connected to the vacuum pumping assembly through the air extraction port, and the vacuum holes are located within the boundary range of the first sealing ring.

3. The vacuum film application device according to claim 2, characterized in that, The bottom frame is also provided with a second sealing ring, which surrounds the placement platform. When the first sealing ring abuts against the bottom frame, the second sealing ring abuts against the bottom plate, and the outer edge of the first sealing ring abuts against the inner edge of the second sealing ring.

4. The vacuum film application device according to claim 2, characterized in that, The film cutting mechanism includes a limiting rod fixed on the top plate away from the bottom plate, a pressing plate fixed on the limiting rod, and a cutter fixed on the pressing plate near the pressing assembly. A moving groove corresponding to the cutter is formed on the top plate.

5. The vacuum film application device according to claim 4, characterized in that, The film cutting mechanism also includes an elastic element, which is disposed on the limiting rod and located between the pressing plate and the top plate.

6. The vacuum film application device according to claim 2, characterized in that, A sealing groove is formed at the position of the bottom frame corresponding to the first sealing ring.

7. The vacuum film application device according to claim 2, characterized in that, The top plate and the bottom plate are detachably connected.

8. The vacuum film application device according to claim 7, characterized in that, The film pressing assembly also includes an upper clamping plate and a lower clamping plate, wherein the lower clamping plate and the upper clamping plate are disposed between the bottom plate and the top plate.

9. The vacuum film application device according to claim 2, characterized in that, The vacuum pressing mechanism further includes a guide assembly, which is disposed between the stage assembly and the pressing assembly. The guide assembly includes a plurality of guide rods arranged in a vertical direction, and the pressing assembly has guide holes for the guide rods to pass through.

10. The vacuum film application device according to claim 1, characterized in that, The film supply mechanism includes an unwinding roller and a winding roller. The film material is continuously unwound from the unwinding roller, coated by the vacuum pressing mechanism and cut by the film cutting mechanism, and then wound up by the winding roller. A rotating rod is provided on one side of the winding roller.

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