Cutting device adaptive to curvature of metallized film

Abstract

The invention discloses a cutting device adapting to the curvature of a metallized film, and relates to the field of metallized film cutting, the cutting device comprises a workbench and an adapting mechanism used for adapting to the curvature of the metallized film, the upper surface of the workbench is fixedly provided with an inverted-U-shaped supporting frame through bolts, and the supporting frame is fixedly provided with a transverse plate located below a top plate; a lead screw is arranged between the upper portion of the transverse plate and the top plate of the supporting frame, the adaptation mechanism comprises a sensing assembly and an adjusting assembly, the sensing assembly is arranged in the transverse cutting direction of the blade and used for feeding back metallized film transverse deflection curvature data to an external controller, and the adjusting assembly is used for dynamically adjusting the cutting angle of the tool rest according to the fed-back data. And the cutting track of the blade is matched with the transverse curvature change of the film. According to the invention, the local curvature change of the metallized film caused by winding, tension change or base material deformation can be accurately matched, and the problems of uneven notch, edge burr and the like caused by uneven stress during cutting of a rigid cutter are effectively avoided.

Description

Technical Field

[0001] This invention relates to the technical field of metallized thin film cutting, specifically to a cutting device adapted to the curvature of metallized thin films. Background Technology

[0002] Metallized thin films are a special composite material formed by precisely depositing a uniform metal layer on the surface of a thin film substrate using advanced surface treatment technologies such as vacuum evaporation or sputtering. This composite material retains the flexibility and insulation properties of the thin film substrate while possessing the excellent conductivity and electromagnetic shielding performance of the metal layer. Therefore, it has broad application prospects in the modern electronics industry. During the production and processing of metallized thin films, they need to be slit.

[0003] A metallized film cutting device described in the prior art includes a frame, a cutting structure, a slitting structure, and a winding structure mounted on the top of the frame. The cutting structure includes a first crossbeam fixed to the top of the frame, a first lead screw movably sleeved inside the first crossbeam, a second slider threaded onto the outside of the first lead screw, a first telescopic cylinder connected to the side of the second slider, and a first cutter connected to the bottom of the first telescopic cylinder.

[0004] While the aforementioned technology can cut metallized films without the need for additional cutting tools, thus improving processing efficiency, the film's width direction (lateral) curvature or swaying deformation during the cutting process cannot be adaptively adjusted by rigid cutting tools according to the real-time curvature changes of the film. This leads to uneven stress on the film during cutting, resulting in uneven cuts and burrs on the edges, affecting cutting quality and subsequent processing accuracy. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a cutting device that adapts to the curvature of metallized thin films, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A cutting device adapting to the curvature of a metallized film includes a worktable and an adaptation mechanism for adapting to the curvature of the metallized film. An inverted U-shaped support frame is bolted to the upper surface of the worktable. A horizontal plate is fixed to the support frame below a top plate. A conveying shell with a top opening is mounted on the upper surface of the worktable by screws. A lead screw is provided between the horizontal plate and the top plate of the support frame. Both ends of the lead screw are rotatably connected to the two side frames of the support frame. A movable block is fitted onto the lead screw and threadedly connected. A movable through slot is provided on the horizontal plate. A connecting block is mounted to the bottom of the movable block by screws. A blade holder is located below the connecting block, and a blade is mounted on the blade holder via a pin. The adaptation mechanism includes a sensing component and an adjustment component. The sensing component is located in the transverse cutting direction of the blade and is connected to the connecting block. The sensing component is used to feed back the transverse deflection curvature data of the metallized film to an external controller. The adjustment component is located between the connecting block and the blade holder and serves as a connection. The adjustment component is used to dynamically adjust the cutting angle of the blade holder according to the feedback data, so that the cutting trajectory of the blade is adapted to the transverse curvature change of the film.

[0007] Specifically, the sensing component includes a roller and a fixed plate. The fixed plate is located above the roller. Both ends of the roller are fixed with shafts. Side plates are sleeved on both shafts. An angle displacement sensor is embedded in the side of the two side plates away from the roller. Auxiliary compression springs are fixed on both sides of the top of the two side plates. The top of each auxiliary compression spring is fixedly connected to the lower surface of the fixed plate.

[0008] Specifically, in this technical solution, the side walls of both side plates are provided with limiting plates, the tops of the four limiting plates are fixedly connected to the lower surface of the fixed plate, and the side walls of the two side plates are in sliding contact with the outer walls of the corresponding limiting plates.

[0009] Specifically, in this technical solution, L-shaped connecting rods are symmetrically fixed on the upper surface of the fixing plate, and the other ends of the two L-shaped connecting rods are fixedly connected to the outer wall of the connecting block. Several conveying rollers are uniformly arranged inside the conveying shell, and the upper roller surfaces of the several conveying rollers are in contact with the lower surface of the metallized film. The lower wheel surface of the rollers is in rolling contact with the upper surface of the metallized film.

[0010] Specifically, in this technical solution, notches are provided on both sides of the conveying shell at the transverse cutting position of the blade, and the width of both notches is greater than the width of the blade holder.

[0011] Specifically, the adjustment component includes a vertical shaft, the bottom end of which is fixedly connected to the top end of the tool holder. A drive cavity is provided in the inner bottom of the connecting block. The top end of the vertical shaft is rotatably connected to the top wall of the drive cavity. A first bevel gear is fixedly sleeved on the shaft inside the drive cavity. A second bevel gear is meshed with the upper tooth surface of the first bevel gear. A transmission shaft is fixedly inserted through the center of the second bevel gear. A reduction gearbox is installed on the bottom side wall of the connecting block by screws. The transmission shaft passes through the drive cavity and is fixedly connected to the output shaft of the reduction gearbox.

[0012] Specifically, in this technical solution, the vertical shaft and the transmission shaft are rotatably connected to the connecting block through bearings. The diameter of the second bevel gear is smaller than that of the first bevel gear. A micro motor is bolted to the lower surface of the gearbox. The output end of the micro motor is connected to the input end of the gearbox through a coupling.

[0013] Specifically, in this technical solution, a drive motor is bolted to the top of the side wall of the support frame. The output end of the drive motor passes through the wall of the support frame and is connected to the lead screw through a coupling. The outer wall of the connecting block slides in contact with the groove wall of the movable through groove.

[0014] Specifically, in this technical solution, mounting blocks are installed on the ends of the two side walls of the conveying shell on the upper surface of the workbench by screws. Each mounting block has a movable through groove, and each movable through groove has a lifting block. A horizontal shaft is fixed on the side of each lifting block near the conveying shell, and an abutment wheel is fixedly installed at the end of each horizontal shaft.

[0015] Specifically, in this technical solution, a vertical threaded rod is rotatably installed in each of the movable through slots, each of the lifting blocks is sleeved on the corresponding threaded rod and threadedly connected, the top end of each threaded rod passes through the top end of the mounting block and is fixed with a handle, and the lower wheel surface of each abutment wheel is in rolling contact with the upper surface of the metallized film.

[0016] In summary, the present invention has the following advantages: through the coordinated work of the sensing component and the adjustment component, real-time monitoring and dynamic adjustment of the lateral deflection curvature change during the metallization film cutting process are realized. That is, the roller in the sensing component rolls in contact with the film surface. When the film undergoes a lateral curvature change, the roller drives the shaft and side plate to deflect. The angle displacement sensor transmits the deflection angle signal to the external controller. At the same time, the auxiliary compression spring ensures that the roller is always in close contact with the film surface, thereby improving the accuracy of curvature data acquisition. Upon receiving commands from the controller, the adjustment component drives the gearbox via a micro motor. Through the meshing of the transmission shaft, the second bevel gear, and the first bevel gear, the vertical shaft rotates, thereby adjusting the cutting angle of the tool holder and the blade. This ensures that the blade cutting trajectory is precisely matched with the real-time lateral curvature of the film, accurately matching the local curvature changes of the metallized film. This effectively avoids problems such as uneven cuts and edge burrs caused by uneven force during rigid tool cutting, significantly improving the cutting quality of the metallized film, ensuring the accuracy of subsequent processing, and meeting the high-precision requirements of the electronics industry for metallized film cutting. The design of the auxiliary compression spring and the limiting plate ensures a tight fit between the roller and the film surface, improving the accuracy of curvature data detection. At the same time, the limiting plate can effectively prevent the side plate from shifting, indirectly improving the operational stability of the entire sensing component. Furthermore, the cooperation between the abutment rollers and threaded rods on both sides of the worktable can flexibly adjust the abutment pressure according to the film thickness, effectively limiting the lateral shift and vertical sway during film cutting, further assisting in improving cutting stability. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the orthogonal isometric structure of the worktable of the present invention; Figure 2 This is a schematic diagram of the main structure of the worktable of the present invention; Figure 3 This is a schematic diagram of the support frame and adaptation mechanism of the present invention; Figure 4 This is a schematic diagram of the connecting block and adjusting component structure of the present invention; Figure 5 This is a schematic diagram of the separation structure of the sensing component of the present invention; Figure 6 For the present invention Figure 1 Enlarged view of point A in the middle.

[0018] Figure Descriptions: 1. Workbench; 101. Conveyor Shell; 102. Conveyor Roller; 103. Notch; 2. Support Frame; 201. Horizontal Plate; 202. Moving Through Slot; 203. Lead Screw; 204. Drive Motor; 205. Moving Block; 206. Connecting Block; 2061. Drive Cavity; 3. Tool Holder; 301. Blade; 4. Adaptation Mechanism; 5. Sensing Component; 501. Roller; 5011. Shaft; 502. Side Plate; 5021. Angle 503 Displacement sensor; 504 Auxiliary compression spring; 505 Limiting plate; 506 Fixing plate; 507 L-shaped connecting rod; 6. Adjustment assembly; 608 Vertical shaft; 609 First bevel gear; 6002 Second bevel gear; 6003 Drive shaft; 601 Gearbox; 602 Miniature motor; 703 Mounting block; 704 Movable through slot; 705 Lifting block; 706 Horizontal shaft; 707 Abutment wheel; 708 Threaded rod; 709 Handle. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of the present invention will now be described.

[0021] It should be noted that all electrical components in this device are uniformly controlled by an external controller, which is an industrial embedded controller. The angular displacement sensor 5021 outputs an analog signal, which the controller receives and directly drives the micro motor 606. The signal correspondence is 1:1 matched (deflection angle = tool holder rotation angle). In this embodiment, please refer to Figure 1 - Figure 6As shown, a cutting device adapting to the curvature of a metallized film includes a worktable 1 and an adaptation mechanism 4 for adapting to the curvature of the metallized film. The worktable 1 is fixed on a processing table. An inverted U-shaped support frame 2 is bolted to the upper surface of the worktable 1. The support frame 2 spans the width of the worktable 1, with its two side frames perpendicular to the upper surface of the worktable 1. A top plate is parallel to the upper surface of the worktable 1. A horizontal plate 201 is fixed to the support frame 2 below the top plate. The horizontal plate 201 is parallel to the top plate and the spacing between them is fixed. A conveying shell 101 with a top opening is installed on the upper surface of the worktable 1 by screws. The inner surface of the conveying shell 101... A plurality of conveying rollers 102 are evenly arranged in the support frame 2. The upper surface of each conveying roller 102 is in contact with the lower surface of the metallized film to achieve stable conveying of the metallized film. The outer wall of the conveying rollers 102 is fitted with a soft rubber sleeve to prevent scratching the metal coating on the surface of the metallized film. A lead screw 203 is provided between the top of the horizontal plate 201 and the top plate of the support frame 2. Both ends of the lead screw 203 are rotatably connected to the two side frames of the support frame 2. A moving block 205 is fitted on the lead screw 203 and threadedly connected. A drive motor 204 is bolted to the top of the side wall of the support frame 2. The output end penetrates the wall of the support frame 2 and is connected to the lead screw 203 via a coupling. This drives the lead screw 203 to rotate, thereby causing the moving block 205 to move along the length of the lead screw 203. A moving slot 202 is provided on the horizontal plate 201. The outer wall of the connecting block 206 slides in contact with the slot wall of the moving slot 202. The moving slot 202 guides and limits the connecting block 206, ensuring that the connecting block 206 moves synchronously and smoothly with the moving block 205, preventing deviation. The connecting block 206 is mounted to the bottom of the moving block 205 with screws. A tool holder 3 is located below the connecting block 206. The tool holder 3 is... The U-shaped structure has its opening facing downwards. The blade 301 is mounted on the tool holder 3 via a pin. Both ends of the pin are fitted with limit springs to prevent the blade 301 from falling off during the cutting process. The blade 301 is made of cemented carbide and has an arc-shaped cutting edge to adapt to the curved surface cutting requirements of metallized films. The two side walls of the conveyor housing 101 are provided with notches 103 corresponding to the transverse cutting position of the blade 301. The width of the two notches 103 is greater than the width of the tool holder 3 to ensure that when the tool holder 3 drives the blade 301 to make a transverse cut, it can pass smoothly through the shell wall of the conveyor housing 101 and avoid interference with the conveyor housing 101. Mounting blocks 7 are screwed onto the ends of both side walls of the conveyor housing 101 on the upper surface of the workbench 1. Each mounting block 7 has a movable through groove 701, and each movable through groove 701 has a lifting block 702. A horizontal shaft 703 is fixed to the side of each lifting block 702 near the conveyor housing 101. The horizontal shaft 703 is horizontally arranged, and its axis is parallel to the axis of the conveyor roller 102. An abutment wheel 704 is fixedly installed at the end of each horizontal shaft 703. The outer wall of the abutment wheel 704 is covered with a soft polyurethane sleeve. A vertical thread is rotatably installed in each movable through groove 701. The rod 705, each lifting block 702 is sleeved on the corresponding threaded rod 705 and connected by threads. The top end of each threaded rod 705 passes through the top end of the mounting block 7 and is fixed with a handle 706. The lower wheel surface of each abutment wheel 704 rolls in contact with the upper surface of the metallized film to limit the metallized film and prevent the film from shifting laterally and shaking up and down during the cutting process. Rotating the handle 706 can drive the threaded rod 705 to rotate, thereby driving the lifting block 702 to rise and fall along the movable through groove 701, realizing the adjustment of the height of the abutment wheel 704 to adapt to metallized films of different thicknesses. The adaptation mechanism 4 includes a sensing component 5 and an adjustment component 6. The sensing component 5 is located in the transverse cutting direction of the blade 301 and is connected to the connecting block 206. The sensing component 5 is used to feed back the transverse deflection curvature data of the metallized film to an external controller. The adjustment component 6 is located between the connecting block 206 and the blade holder 3 and serves as a connection. The adjustment component 6 is used to dynamically adjust the cutting angle of the blade holder 3 according to the feedback data, so that the cutting trajectory of the blade 301 is adapted to the transverse curvature change of the film.

[0022] When conveying the metallized film, the operator first rotates the handle 706 according to the thickness of the metallized film to be cut, which drives the threaded rod 705 to rotate, thereby driving the lifting block 702 to rise and fall along the movable through groove 701. The height of the abutment wheel 704 is adjusted so that the lower wheel surface of the abutment wheel 704 is in close contact with the upper surface of the metallized film, thereby achieving the limiting and fixing of the film. Then, driven by the take-up roller set at one end of the worktable 1, the metallized film moves smoothly on the conveying roller 102 inside the conveying shell 101. The soft rubber sleeve on the outer wall of the conveying roller 102 effectively protects the metal coating on the film surface from damage. When cutting is required, the external controller stops the take-up roller at the same time and starts the drive motor 204. The output end of the drive motor 204 drives the lead screw 203 to rotate, so that the moving block 205 follows the rotation of the lead screw 203 and drives the connecting block 206 to move along the movable through groove 202. The connecting block 206 drives the knife holder 3, the blade 301 and the sensing component 5 to move horizontally synchronously for cutting. During the cutting process, the roller 501 in the sensing component 5 maintains rolling contact with the upper surface of the film. When the metallized film undergoes local bulging, depression, or other curvature changes due to winding, tension changes, or substrate deformation, the roller 501 will deflect accordingly with the curvature change. The angle displacement sensor 5021 detects the deflection angle and converts the mechanical deflection signal into an electrical signal, which is then sent to the external controller. After receiving the signal, the controller uses its built-in processing module to determine the direction and degree of the lateral curvature change at the current position of the metallized film and sends a control command to the micro motor 606 in the adjustment component 6. After receiving the command, the micro motor 606 starts running and controls the vertical shaft 601 to rotate through the reduction gearbox 605 and bevel gear. The vertical shaft 601 drives the blade holder 3 to deflect around the axis of the vertical shaft 601, adjusting the cutting angle of the blade 301 so that the cutting trajectory of the blade 301 is precisely matched with the real-time lateral curvature of the film, ensuring that the blade 301 always maintains the best contact state with the curved surface of the film during the cutting process. When the lateral curvature of the metallized film returns to flatness, the roller 501 returns to its initial position, the deflection angle of the shaft 5011 returns to zero, the angle displacement sensor 5021 sends a reference electrical signal to the controller, the controller sends a reset command, the micro motor 606 rotates in the opposite direction, driving the tool holder 3 and the blade 301 to reset to the initial angle, and continues to adaptively adjust to follow the lateral curvature change of the next segment of the film, repeating the above cutting process until the entire metallized film is cut. This allows for precise matching of the local curvature changes of the metallized film caused by winding, tension changes, or substrate deformation, effectively avoiding problems such as uneven cuts and edge burrs caused by uneven force when cutting with rigid tools, improving the cutting quality of the metallized film, ensuring the accuracy of subsequent processing, and meeting the high precision requirements of the electronics industry for metallized film cutting.

[0023] Please see Figure 3 - Figure 5As shown, the sensing component 5 includes a roller 501 and a fixing plate 505. The fixing plate 505 is located above the roller 501. A shaft 5011 is fixed to both ends of the roller 501. Side plates 502 are fitted onto both shafts 5011. An angle displacement sensor 5021 is embedded in the side of each side plate 502 away from the roller 501. The angle displacement sensor 5021 is used to detect the deflection angle of the shaft 5011 in real time, thereby obtaining the deflection angle of the roller 501 and indirectly reflecting the curvature change of the metallized film. Auxiliary compression springs 503 are fixed to both sides of the top of each side plate 502. The top of each auxiliary compression spring 503 is attached to the lower surface of the fixing plate 505. The auxiliary compression spring 503 is always in a slightly compressed state, providing downward pressure to the side plate 502 to ensure that the lower wheel surface of the roller 501 is always in close rolling contact with the upper surface of the metallized film, thus preventing the roller 501 from detaching from the film and causing distortion of the detection data. The side walls of both side plates 502 are provided with limiting plates 504. The tops of the four limiting plates 504 are fixedly connected to the lower surface of the fixed plate 505. The side walls of both side plates 502 are in sliding contact with the outer walls of the corresponding limiting plates 504. The limiting plates 504 are used to limit the excessive offset of the side plates 502 in the direction perpendicular to the film conveying direction, thereby improving the stability of the detection data of the angle displacement sensor 5021. L-shaped connecting rods 506 are symmetrically fixed on the upper surface of the fixing plate 505. The other ends of the two L-shaped connecting rods 506 are fixedly connected to the outer wall of the connecting block 206 to fix the sensing component 5 and the connecting block 206 into one piece, ensuring that the sensing component 5 moves horizontally synchronously with the connecting block 206. The angle displacement sensor 5021 is connected to the external controller through a shielded signal line. The shielded signal line passes through the wiring groove opened inside the L-shaped connecting rod 506 to avoid interference from dust and debris generated during the cutting process, and to prevent the signal line from getting tangled. The lower wheel surface of the roller 501 rolls in contact with the upper surface of the metallized film. When the metallized film bulges or dents, the roller 501 will lift, fall and deflect at an angle as the curvature changes, thereby driving the shaft 5011 to deflect. The angle displacement sensor 5021 detects the deflection angle in real time and converts it into an electrical signal, which is then sent to the external controller. The adjusting assembly 6 includes a vertical shaft 601, the bottom end of which is fixedly connected to the top end of the tool holder 3. A drive cavity 2061 is formed in the bottom inner part of the connecting block 206. The top end of the vertical shaft 601 is rotatably connected to the top wall of the drive cavity 2061. A first bevel gear 602 is fixedly sleeved on the shaft inside the drive cavity 2061. A second bevel gear 603 is meshed with the upper tooth surface of the first bevel gear 602. A transmission shaft 604 is fixedly inserted through the center of the second bevel gear 603. A reduction gearbox 605 is installed on the bottom side wall of the connecting block 206 by screws. The transmission shaft 604 extends out of the drive cavity 2061 and engages with the reduction gearbox 605. The output shaft of the gearbox 605 is fixedly connected. The vertical shaft 601 and the transmission shaft 604 are rotatably connected to the connecting block 206 through bearings, which reduces frictional resistance during rotation and ensures smooth transmission. The diameter of the second bevel gear 603 is smaller than that of the first bevel gear 602. The bevel gear meshing transmission can realize the change of power direction. At the same time, through the cooperation of the large and small bevel gears, speed reduction and torque increase are realized, which improves the stability and accuracy of the tool holder angle adjustment. The lower surface of the gearbox 605 is bolted with a micro motor 606. The output end of the micro motor 606 is connected to the input end of the gearbox 605 through a coupling.

[0024] During the cutting process of the metallized film, the roller 501 maintains rolling contact with the film surface. When the film exhibits a local change in lateral curvature, the roller 501 is deflected by the pressure of the film's curved surface. This deflection is transmitted to the side plate 502 via the shaft 5011, causing the side plate 502 to compress or stretch the auxiliary compression spring 503. The limiting plate 504 then constrains the offset range of the side plate 502 to prevent excessive tilting. At this time, the angle displacement sensor 5021 accurately captures the deflection angle and transmits the deflection angle signal to an external controller in real time. The controller processes the signal. After processing and judgment, a specific rotation command is sent to the micro motor 606. The micro motor 606 starts, and its output end is reduced in speed and increased in torque through the reduction gearbox 605, driving the transmission shaft 604 to rotate. The transmission shaft 604 drives the second bevel gear 603 to rotate, and the second bevel gear 603 drives the meshing first bevel gear 602 to rotate, thereby causing the vertical shaft 601 to rotate. The rotation of the vertical shaft 601 directly drives the tool holder 3 and the blade 301 to adjust their angle around the axis of the vertical shaft 601, adjusting the cutting angle of the blade 301 so that the cutting trajectory of the blade 301 is precisely matched with the real-time transverse curvature of the film, realizing follow-up cutting.

[0025] The working principle of this invention is as follows: When conveying the metallized film, the operator first rotates the handle 706 according to the thickness of the metallized film to be cut, which drives the threaded rod 705 to rotate, thereby driving the lifting block 702 to rise and fall along the movable through groove 701. The height of the abutment wheel 704 is adjusted so that the lower wheel surface of the abutment wheel 704 is in close contact with the upper surface of the metallized film, thereby achieving the limiting and fixing of the film. Then, driven by the take-up roller set at one end of the worktable 1, the metallized film moves smoothly on the conveying roller 102 inside the conveying shell 101. The soft rubber sleeve on the outer wall of the conveying roller 102 effectively protects the metal coating on the film surface from damage. When cutting is required, the external controller stops the take-up roller at the same time and starts the drive motor 204. The output end of the drive motor 204 drives the lead screw 203 to rotate, so that the moving block 205 follows the rotation of the lead screw 203 and drives the connecting block 206 to move along the movable through groove 202. The connecting block 206 drives the knife holder 3, the blade 301 and the sensing component 5 to move horizontally synchronously for cutting. During the cutting process, the roller 501 maintains rolling contact with the film surface. When the film exhibits localized lateral curvature changes, the roller 501 is deflected by the pressure of the film's curved surface. This deflection is transmitted to the side plate 502 via the shaft 5011, causing the side plate 502 to compress or stretch the auxiliary compression spring 503. The limiting plate 504 then constrains the offset range of the side plate 502 to prevent excessive tilting. At this time, the angle displacement sensor 5021 accurately captures the deflection angle and transmits the deflection angle signal to the external controller in real time. After processing and judging the signal, the controller sends a specific rotation command to the micro motor 606. The micro motor 606 starts, and its output end, after being reduced in speed and torque by the reduction gearbox 605, drives the transmission shaft 604 to rotate. The transmission shaft 604 drives the second bevel gear 603. The second bevel gear 603 drives the meshing first bevel gear 602 to rotate, which in turn causes the vertical shaft 601 to rotate. The rotation of the vertical shaft 601 directly drives the tool holder 3 and the blade 301 to adjust their angles around the axis of the vertical shaft 601, adjusting the cutting angle of the blade 301 so that the cutting trajectory of the blade 301 is precisely matched with the real-time transverse curvature of the film, realizing follow-up cutting. When the curvature of the metallized film returns to flatness, the roller 501 returns to its initial position, the deflection angle of the shaft 5011 returns to zero, the angle displacement sensor 5021 sends a reference electrical signal to the controller, the controller sends a reset command, the micro motor 606 rotates in the opposite direction, driving the tool holder 3 and the blade 301 to reset to the initial angle, and continue to follow the transverse curvature change of the next segment of the film for adaptive adjustment. The above cutting process is repeated until the entire metallized film is cut.

[0026] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A cutting device for adapting to the curvature of a metallized film, comprising a worktable (1) and an adaptation mechanism (4) for adapting to the curvature of the metallized film, wherein an inverted U-shaped support frame (2) is bolted to the upper surface of the worktable (1), and a horizontal plate (201) is fixed to the support frame (2) below the top plate, characterized in that, The upper surface of the workbench (1) is fitted with a conveyor shell (101) with a top opening by screws. A lead screw (203) is provided between the top of the horizontal plate (201) and the top plate of the support frame (2). Both ends of the lead screw (203) are rotatably connected to the two sides of the support frame (2). A moving block (205) is fitted on the lead screw (203) and is threadedly connected. A moving through slot (202) is provided on the horizontal plate (201). A connecting block (206) is installed at the bottom of the moving block (205) by screws. A tool holder (3) is provided below the connecting block (206). A blade (301) is installed on the tool holder (3) by a pin. The adaptation mechanism (4) includes a sensing component (5) and an adjustment component (6). The sensing component (5) is located in the transverse cutting direction of the blade (301) and is connected to the connecting block (206). The sensing component (5) is used to feed back the transverse deflection curvature data of the metallized film to an external controller. The adjustment component (6) is located between the connecting block (206) and the blade holder (3) and serves as a connection. The adjustment component (6) is used to dynamically adjust the cutting angle of the blade holder (3) according to the feedback data so that the cutting trajectory of the blade (301) is adapted to the transverse curvature change of the film.

2. The cutting device for adapting to the curvature of metallized thin films according to claim 1, characterized in that, The sensing component (5) includes a roller (501) and a fixing plate (505). The fixing plate (505) is located above the roller (501). Both ends of the roller (501) are fixed with shafts (5011). Side plates (502) are sleeved on both shafts (5011). An angle displacement sensor (5021) is embedded in the side of the two side plates (502) away from the roller (501). Auxiliary compression springs (503) are fixed on both sides of the top of the two side plates (502). The top of each auxiliary compression spring (503) is fixedly connected to the lower surface of the fixing plate (505).

3. The cutting device for adapting to the curvature of metallized thin films according to claim 2, characterized in that, The side walls of both side plates (502) are provided with limiting plates (504), the tops of the four limiting plates (504) are fixedly connected to the lower surface of the fixing plate (505), and the side walls of the two side plates (502) are in sliding contact with the outer wall of the corresponding limiting plate (504).

4. The cutting device for adapting to the curvature of metallized thin films according to claim 2, characterized in that, The upper surface of the fixed plate (505) is symmetrically fixed with L-shaped connecting rods (506), and the other ends of the two L-shaped connecting rods (506) are fixedly connected to the outer wall of the connecting block (206). The interior of the conveying shell (101) is uniformly provided with a number of conveying rollers (102). The upper roller surfaces of the several conveying rollers (102) are in contact with the lower surface of the metallized film, and the lower wheel surface of the roller (501) is in rolling contact with the upper surface of the metallized film.

5. The cutting device for adapting to the curvature of metallized thin films according to claim 1, characterized in that, The two sides of the conveying shell (101) are provided with notches (103) corresponding to the transverse cutting position of the blade (301), and the width of the two notches (103) is greater than the width of the blade holder (3).

6. The cutting device for adapting to the curvature of metallized thin films according to claim 1, characterized in that, The adjustment assembly (6) includes a vertical shaft (601), the bottom end of which is fixedly connected to the top end of the tool holder (3). The bottom of the connecting block (206) has a drive cavity (2061). The top end of the vertical shaft (601) is rotatably connected to the top wall of the drive cavity (2061). A first bevel gear (602) is fixedly sleeved on the shaft inside the drive cavity (2061) of the vertical shaft (601). A second bevel gear (603) is meshed with the upper tooth surface of the first bevel gear (602). A transmission shaft (604) is fixedly inserted through the center of the second bevel gear (603). A reduction gearbox (605) is installed on the bottom of the side wall of the connecting block (206) by screws. The transmission shaft (604) passes through the drive cavity (2061) and is fixedly connected to the output shaft of the reduction gearbox (605).

7. A cutting device adapting to the curvature of a metallized thin film according to claim 6, characterized in that, The vertical shaft (601) and the transmission shaft (604) are rotatably connected to the connecting block (206) through bearings. The diameter of the second bevel gear (603) is smaller than that of the first bevel gear (602). A micro motor (606) is bolted to the lower surface of the gearbox (605). The output end of the micro motor (606) is connected to the input end of the gearbox (605) through a coupling.

8. The cutting device for adapting to the curvature of metallized thin films according to claim 1, characterized in that, A drive motor (204) is bolted to the top of the side wall of the support frame (2). The output end of the drive motor (204) passes through the wall of the support frame (2) and is connected to the lead screw (203) through a coupling. The outer wall of the connecting block (206) slides in contact with the groove wall of the movable through groove (202).

9. A cutting device adapting to the curvature of a metallized thin film according to claim 1, characterized in that, The upper surface of the workbench (1) is equipped with mounting blocks (7) at the ends of the two side walls of the conveying shell (101) by screws. Each mounting block (7) has a movable through groove (701), and each movable through groove (701) has a lifting block (702). Each lifting block (702) has a horizontal shaft (703) fixed on the side near the conveying shell (101), and each horizontal shaft (703) has an abutment wheel (704) fixedly installed at the end.

10. A cutting device adapting to the curvature of a metallized thin film according to claim 9, characterized in that, Each of the movable through slots (701) is rotatably mounted with a vertical threaded rod (705), each of the lifting blocks (702) is sleeved on the corresponding threaded rod (705) and threadedly connected, the top end of each threaded rod (705) is fixed with a handle (706) through the top end of the mounting block (7), and the lower wheel surface of each abutment wheel (704) is in rolling contact with the upper surface of the metallized film.

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