Graphite flake edge covering and die cutting equipment

Abstract

The invention relates to graphite flake edge covering and die cutting equipment, in particular to the technical field of graphite flake machining, and comprises a rack, a feeding mechanism is arranged on one side of the rack, the feeding mechanism comprises a driving roller, a driven roller, a base material conveying belt and a conveying motor, and a film conveying assembly is arranged on one side of the feeding mechanism; a horizontal workbench is arranged on the upper surface of the rack, a working box is arranged at the top of the horizontal workbench, a positioning mechanism is arranged on one side of the interior of the working box, an edge covering mechanism is arranged on one side of the positioning mechanism, and an electrical cabinet is arranged in the middle of the rack. The whole process is uniformly and coordinately driven by a control system located in an electrical cabinet in the middle of the rack, and multifunctional modules such as feeding, edge covering and die cutting are integrated on a uniform rack and a horizontal workbench, so that the foundation of high precision, high efficiency and high automation degree of equipment is laid; and the problems of dispersed working procedures and low efficiency in a step-by-step processing mode are fundamentally solved.

Description

Technical Field

[0001] This application relates to the field of graphite sheet processing technology, and in particular to a graphite sheet edge-wrapping die-cutting equipment. Background Technology

[0002] Graphite heat sinks are core components for heat dissipation in electronic devices due to their lightweight and high thermal conductivity. To prevent dust from falling off and scratching electronic components during use, and to improve insulation performance, insulating materials, such as PET film or PI film, need to be wrapped around the surface of the graphite sheet, especially at the edges. The graphite sheet is then die-cut into a finished product of a specific shape. This "edge wrapping + die-cutting" process is the key step in graphite sheet manufacturing.

[0003] The current processing methods and existing problems in this process within the industry are as follows:

[0004] Step-by-step processing mode: First, the graphite sheet is wrapped with insulating film using an independent edge-wrapping machine (manually or with simple machinery), and then transferred to a die-cutting machine for shaping and cutting. This method has the following drawbacks: Low efficiency: manual transfer is required between processes, the processing capacity of a single machine per hour is low, and 2-3 people are required to operate in coordination; Large positioning deviation: the graphite sheet is prone to shifting when transferred to the die-cutting machine after edge wrapping, resulting in misalignment of the edge wrapping after die-cutting and a high defect rate of finished products; High labor costs: the coordination of multiple processes requires a large number of people, and manual operation during insulation film wrapping is prone to producing air bubbles and wrinkles.

[0005] Some existing integrated equipment attempts to combine edge banding and die-cutting functions, but they have mechanical defects. They use fixed pressure rollers and cannot adjust the pressure according to the thickness of the graphite sheet. Thin graphite sheets are easily deformed, and thick graphite sheets are not tightly edged. The die-cutting mechanism has no buffer protection, and the cutting edge directly and rigidly contacts the graphite sheet. The die-cutting mold needs to be replaced frequently, resulting in high maintenance costs. Summary of the Invention

[0006] The purpose of this application is to provide a graphite sheet edge-sealing die-cutting device.

[0007] Firstly, the graphite sheet edge-wrapping die-cutting equipment provided in this application adopts the following technical solution:

[0008] A graphite sheet edge-wrapping die-cutting machine includes a frame. A feeding mechanism is provided on one side of the frame. The feeding mechanism includes a drive roller, a driven roller, a substrate conveyor belt, and a conveyor motor. The drive roller is connected to one side of the frame via bearings. A driven roller is provided on one side of the drive roller. The drive roller and the driven roller are connected by the substrate conveyor belt. A conveyor motor is provided on one side of the frame. A film conveying assembly is provided on one side of the feeding mechanism. A horizontal worktable is provided on the upper surface of the frame. A work box is provided on the top of the horizontal worktable. A positioning mechanism is provided on one side of the interior of the work box. An edge-wrapping mechanism is provided on one side of the positioning mechanism. An electrical cabinet is provided in the middle of the frame.

[0009] By adopting the above technical solution, the operator installs the graphite substrate roll, the upper insulating film roll, and the lower insulating film roll onto the corresponding unwinding rollers of the feeding mechanism. The drive roller is rotated by the conveyor motor, which in turn drives the substrate conveyor belt to circulate and continuously transport the graphite substrate forward. The film conveying assembly simultaneously transports the upper and lower insulating films to the upper and lower surfaces of the substrate. All materials then enter the core processing area encapsulated in the work box. First, the positioning mechanism accurately positions the materials to ensure the positional accuracy of subsequent processing. Then, the edge-wrapping mechanism performs the edge-wrapping operation. The entire process is uniformly coordinated and driven by the control system located in the electrical cabinet in the middle of the frame. The multi-functional modules such as feeding, edge-wrapping, and die-cutting are integrated into a unified frame and horizontal workbench, laying the foundation for the equipment's high precision, high efficiency, and high degree of automation. This fundamentally solves the problems of dispersed processes and low efficiency in the step-by-step processing mode.

[0010] The membrane material conveying assembly includes a membrane material unwinding roller, a guide roller, and a synchronous motor. The membrane material unwinding roller is connected to one side of the frame via a bearing. There are two sets of membrane material unwinding rollers, and the two sets of membrane material unwinding rollers are respectively arranged on both sides of the substrate conveyor belt. A guide roller is arranged on one side of the membrane material unwinding roller. A synchronous motor is arranged on the outer wall of one side of the frame, and the output end of the synchronous motor is connected to the membrane material unwinding roller.

[0011] By adopting the above technical solution, two sets of film unwinding rollers respectively carry the upper and lower rolls of insulating film. The synchronous motor drives the film unwinding rollers to rotate and release the film. The released film is guided by the guide rollers and is precisely guided to cover the upper and lower surfaces of the substrate running on the substrate conveyor belt. Through the symmetrical arrangement of two sets of film unwinding rollers and guide rollers, the synchronous and centered supply of the upper and lower insulating films is realized, which provides a prerequisite for forming a uniform sandwich structure composite. The synchronous motor drive ensures that the film conveying speed is coordinated with the substrate conveying speed, avoiding film pulling, deformation or breakage caused by asynchronous speed.

[0012] The positioning mechanism includes a photoelectric sensor, a miniature cylinder, a positioning block, an electric push rod, and a limiting plate. The photoelectric sensor is symmetrically installed on the inner walls of the top two sides of the work box. A miniature cylinder is provided on both sides of the work box. The output end of the miniature cylinder is connected to the positioning block. An electric push rod is provided on the inner wall of the top side of the work box. The output end of the electric push rod is connected to the limiting plate.

[0013] By adopting the above technical solution, when the substrate covered with the film material moves to the positioning station, the symmetrically installed photoelectric sensors first detect the edge position of the composite material and feed the signal back to the signal receiving module. Then, the PLC controller controls the micro cylinders on both sides to push the positioning blocks to clamp the composite material from the left and right sides, completing the lateral positioning correction. The electric push rod pushes the limit plate to rise and fall, which can stop the composite material in the correct position and complete the longitudinal positioning. After the positioning is completed, each actuator is reset and the material continues to move forward, ensuring that each piece of material is in a precise position before entering the edge-wrapping station. This greatly reduces product quality problems such as edge-wrapping misalignment and die-cutting deviation caused by inaccurate positioning and significantly improves the yield of finished products.

[0014] The edge-binding mechanism includes an edge-binding frame, edge-binding cylinders, push plates, pre-pressing frames, pre-pressing rollers, annular grooves, baffles, threaded grooves, threaded knobs, pressure plates, auxiliary springs, and side pressure rollers. The edge-binding frame is embedded in the middle of the horizontal worktable. Edge-binding cylinders are fixedly connected to the inner walls of the upper and lower sides of the edge-binding frame. Push plates are fixedly connected to the ends of the edge-binding cylinders. Pre-pressing frames are embedded on opposite sides of the two sets of push plates. A pre-pressing roller is connected to the middle of the pre-pressing frame via a bearing. Annular grooves are provided on the surface of the pre-pressing rollers. Multiple sets of annular grooves are provided and arranged at equal intervals.

[0015] By adopting the above technical solution, the upper and lower edge-wrapping cylinders move synchronously, pushing the push plate and the pre-compression frame installed on it to move in opposite directions, so that the pre-compression roller presses against the composite material. During the rolling and pressing process, the multiple sets of annular grooves on the pre-compression roller can effectively discharge the air between the film and the substrate, realize the initial pre-compression bonding, and eliminate air bubbles. Through the rolling pre-compression of the pre-compression roller, the preparation work before edge wrapping is completed in a gentle and efficient manner. The design of the annular grooves increases the exhaust channel during pressing, improving the appearance quality and adhesion reliability of the edge wrapping.

[0016] One end of the pre-pressing frame passes through the push plate, the pre-pressing frame and the push plate are slidably connected, and a baffle is fixedly connected to the end of the pre-pressing frame away from the pre-pressing roller. The baffle abuts against the push plate. Threaded grooves are provided in the middle of the two side walls of the pre-pressing frame, and a threaded knob is fitted on the outer wall of the pre-pressing frame. The threaded knob is threadedly connected to the threaded groove.

[0017] By adopting the above technical solution, the pre-compression frame can slide in the push plate. By turning the threaded knob, it can be screwed in or out of the threaded groove, thereby changing the initial elastic force of the auxiliary spring and adjusting the pressing force of the pre-compression roller on the material. The baffle acts as a limit. Operators can use this structure to quickly adapt to composite materials of different thickness ranges and realize the setting of the basic pressure.

[0018] A pressure plate is provided on the top of the threaded knob, an auxiliary spring is provided between the pressure plate and the push plate, and the auxiliary spring is sleeved on the outer wall of the pre-compression frame. Side pressure rollers are provided on both sides of the pre-compression frame.

[0019] By adopting the above technical solution, the auxiliary spring is compressed between the pressure plate and the push plate, providing a continuous and flexible pressure for the pre-compression frame. When encountering a slight difference in material thickness or a small protrusion, the pre-compression frame can compress the spring and move backward to play a buffering role and avoid damaging the material. After the pre-compression is completed, the material continues to move forward, and the edges of the film material on both sides are gradually bent and wrapped and compacted towards the side of the substrate by the side pressure rollers fixed on the pre-compression frame.

[0020] A pressure sensor is installed at the connection between the pre-compression frame and the pre-compression roller. A PLC controller is installed inside the electrical cabinet, and a signal receiving module is installed on one side of the PLC controller.

[0021] By adopting the above technical solution, the pressure sensor monitors the actual pressure value applied to the material by the pre-pressure roller in real time, and transmits the pressure signal to the PLC controller through the signal receiving module. The PLC controller compares the received real-time pressure value with the preset ideal pressure value, and outputs control commands based on the comparison result.

[0022] One side of the edge-binding mechanism is equipped with a die-cutting mechanism, which includes a stamping cylinder, an upper die base, a lower die base, a guide post, and a buffer spring. The top side of the work box is equipped with a stamping cylinder, the output end of which is fixedly connected to the upper die base. The surface of the horizontal worktable is equipped with a lower die base, which matches the upper die base. The edge of the lower die base is fixedly connected to a guide post, the top end of which penetrates the upper die base, and a buffer spring is sleeved on the outer wall of the guide post.

[0023] By adopting the above technical solution, the composite material with the edge banding completed is conveyed to the lower die base. The stamping cylinder drives the upper die base to move downward to die-cut the material. The guide column ensures that the upper die base moves along a precise vertical path to avoid skewing. The buffer spring is compressed at the beginning of the stamping process to provide a force that is soft at first and then hard, avoiding rigid impact of the cutting edge on the material. This can effectively reduce the instantaneous impact force on the die cutting edge and the material, greatly extend the service life of the die, and reduce equipment maintenance costs and downtime.

[0024] The machine frame is equipped with a receiving box at the discharge end, a high-definition camera is installed on the top of the working box, a waste box is installed on one side of the receiving box, and a rejection cylinder is installed on one side of the end of the horizontal worktable.

[0025] By adopting the above technical solution, the die-cut products continue to the receiving end. A high-definition camera acts as a visual sensor to photograph and inspect the finished products, judging whether there are bubbles or wrinkles on the edges, or whether there are burrs or dimensional deviations in the die-cutting. The image data is transmitted to the PLC controller for analysis. If it is judged to be a good product, it falls into the receiving box. If it is judged to be a defective product, the PLC controls the rejection cylinder to push it into the waste box for separation, realizing the automatic rejection of defective products, ensuring that the finished products flowing out of the equipment are qualified, and realizing the automatic collection of waste materials, maintaining the cleanliness of the production environment, and further improving the automation and intelligence level of the equipment.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By integrating the edge binding and die-cutting processes, manual transfer is reduced, significantly improving processing efficiency. Only one person is needed to operate the equipment, significantly reducing labor costs. The edge binding quality is stable, the pressure is adaptively adjustable, and it can adapt to graphite sheets of different thicknesses. The edge binding is free of bubbles and wrinkles, avoiding graphite sheet deformation. Precise positioning is achieved through the positioning mechanism, resulting in small dimensional deviations in the finished product after die-cutting and a significant reduction in the edge binding misalignment defect rate.

[0028] 2. After die-cutting, the product continues to the receiving end. A high-definition camera acts as a vision sensor to photograph and inspect the finished product, judging whether there are bubbles or wrinkles on the edge, or whether there are burrs or dimensional deviations in the die-cutting. The image data is transmitted to the PLC controller for analysis. If it is judged to be a good product, it falls into the receiving box. If it is judged to be a defective product, the PLC controls the rejection cylinder to push it into the waste box for separation, realizing the automatic rejection of defective products, ensuring that the finished products flowing out of the equipment are qualified, and realizing the automatic collection of waste materials, maintaining the cleanliness of the production environment, and further improving the automation and intelligence level of the equipment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the edge-binding mechanism structure according to an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the connection structure between the preload frame and the preload roller in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the positioning mechanism structure according to an embodiment of this application;

[0033] Figure 5 This is a schematic diagram of the feeding mechanism structure according to an embodiment of this application;

[0034] Figure 6 This is a schematic diagram of the die-cutting mechanism structure according to an embodiment of this application;

[0035] Figure 7 This is a schematic diagram of the connection structure between the frame and the receiving box in an embodiment of this application;

[0036] Figure 8 This is a schematic diagram of the internal structure of the electrical cabinet according to an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Feeding mechanism; 201. Driven roller; 202. Driven roller; 203. Substrate conveyor belt; 204. Conveyor motor; 3. Film conveying assembly; 301. Film unwinding roller; 302. Guide roller; 303. Synchronous motor; 4. Horizontal worktable; 5. Work box; 6. Positioning mechanism; 601. Photoelectric sensor; 602. Miniature cylinder; 603. Positioning block; 604. Electric push rod; 605. Limiting plate; 7. Edge binding mechanism; 701. Edge binding frame; 702. Edge binding cylinder; 703. Push plate; 7 04. Pre-compression frame; 705. Pre-compression roller; 706. Annular groove; 707. Baffle plate; 708. Threaded groove; 709. Threaded knob; 710. Pressure plate; 711. Auxiliary spring; 712. Side pressure roller; 8. Electrical cabinet; 9. Pressure sensor; 10. PLC controller; 11. Signal receiving module; 12. Die-cutting mechanism; 121. Stamping cylinder; 122. Upper die base; 123. Lower die base; 124. Guide column; 125. Buffer spring; 13. Receiving box; 14. High-definition camera; 15. Scrap box; 16. Rejection cylinder. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail below.

[0039] Example: A graphite sheet edge-wrapping die-cutting machine includes a frame 1. A feeding mechanism 2 is provided on one side of the frame 1. The feeding mechanism 2 includes a drive roller 201, a driven roller 202, a substrate conveyor belt 203, and a conveyor motor 204. The drive roller 201 is connected to one side of the frame 1 via bearings. The driven roller 202 is provided on one side of the drive roller 201. The drive roller 201 and the driven roller 202 are connected by the substrate conveyor belt 203. The conveyor motor 204 is provided on one side of the frame 1. A film conveying assembly 3 is provided on one side of the feeding mechanism 2. A horizontal worktable 4 is provided on the upper surface of the frame 1. A work box 5 is provided on the top of the horizontal worktable 4. A positioning mechanism 6 is provided on one side of the interior of the work box 5. An edge-wrapping mechanism 7 is provided on one side of the positioning mechanism 6. An electrical cabinet 8 is provided in the middle of the frame 1. The operator installs the graphite sheet substrate roll, the upper insulating film roll, and the lower insulating film roll onto the corresponding unwinding rollers of the feeding mechanism 2. The conveyor motor 204 drives the active roller 201 to rotate, which in turn drives the substrate conveyor belt 203 to circulate and continuously convey the graphite sheet substrate forward. The substrate conveyor belt 203 has micro-adsorption holes on its surface and an exhaust hood inside. The substrate is fixed by vacuum adsorption to prevent conveying deviation. The film conveying assembly 3 synchronously conveys the upper and lower insulating films to the upper and lower surfaces of the substrate. All materials then enter the core processing area enclosed by the working box 5. First, the positioning mechanism 6 accurately positions the materials to ensure the positional accuracy of subsequent processing. Then, the edge-wrapping mechanism 7 performs the edge-wrapping operation. The entire process is uniformly coordinated and driven by the control system located in the electrical cabinet 8 in the middle of the frame 1. The multi-functional modules such as feeding, edge-wrapping, and die-cutting are integrated into a unified frame 1 and a horizontal worktable 4, laying the foundation for the high precision, high efficiency, and high degree of automation of the equipment. This fundamentally solves the problems of process dispersion and low efficiency in the step-by-step processing mode.

[0040] The membrane material conveying assembly 3 includes a membrane unwinding roller 301, a guide roller 302, and a synchronous motor 303. The membrane unwinding roller 301 is connected to one side of the frame 1 via bearings. Two sets of membrane unwinding rollers 301 are provided, and the two sets of membrane unwinding rollers 301 are respectively located on both sides of the substrate conveyor belt 203. A guide roller 302 is provided on one side of the membrane unwinding roller 301. A synchronous motor 303 is provided on the outer wall of one side of the frame 1. The output end of the synchronous motor 303 is connected to the membrane unwinding roller 301. The two sets of membrane unwinding rollers 301 respectively carry upper and lower rolls of insulating film, and synchronously... The motor 303 drives the film unwinding roller 301 to rotate and release the film. The released film is guided by the guide roller 302 and is precisely guided to cover the upper and lower surfaces of the substrate running on the substrate conveyor belt 203. Through the two sets of symmetrically arranged film unwinding rollers 301 and guide rollers 302, the synchronous and centered supply of the upper and lower insulating films is realized, which provides the prerequisite for forming a uniform sandwich structure composite. The drive of the synchronous motor 303 ensures that the film conveying speed is coordinated with the substrate conveying speed, avoiding film pulling, deformation or breakage caused by asynchronous speed.

[0041] The positioning mechanism 6 includes a photoelectric sensor 601, a miniature cylinder 602, a positioning block 603, an electric push rod 604, and a limiting plate 605. The photoelectric sensor 601 is symmetrically installed on the inner walls of the top two sides of the working box 5. A miniature cylinder 602 is provided on both sides of the working box 5, and the output end of the miniature cylinder 602 is connected to the positioning block 603. An electric push rod 604 is provided on the inner wall of the top side of the working box 5, and the output end of the electric push rod 604 is connected to the limiting plate 605. When the substrate covered with the film material moves to the positioning station, the symmetrically installed photoelectric sensor 601 first detects the edge position of the composite material. The system is positioned and sends a signal back to the signal receiving module 11. Then, the PLC controller 10 controls the micro cylinders 602 on both sides to push the positioning blocks 603 to clamp the composite material from the left and right sides, completing the lateral positioning correction. The electric push rod 604 pushes the limit plate 605 to rise and fall, which can stop the composite material in the correct position and complete the longitudinal positioning. After the positioning is completed, each actuator is reset and the material continues to move forward, ensuring that each piece of material is in a precise position before entering the edge-sealing station. This greatly reduces product quality problems such as edge-sealing misalignment and die-cutting deviation caused by inaccurate positioning and significantly improves the yield of finished products.

[0042] The hemming mechanism 7 includes an hemming frame 701, an hemming cylinder 702, a push plate 703, a pre-pressing frame 704, a pre-pressing roller 705, an annular groove 706, a baffle 707, a threaded groove 708, a threaded knob 709, a pressure plate 710, an auxiliary spring 711, and a side pressure wheel 712. The hemming frame 701 is embedded in the middle of the horizontal worktable 4. Hemming cylinders 702 are fixedly connected to the inner walls of both the upper and lower sides of the hemming frame 701. Push plates 703 are fixedly connected to the ends of the hemming cylinders 702. Pre-pressing frames 704 are embedded on opposite sides of the two sets of push plates 703. A pre-pressing roller 705 is connected to the middle of the pre-pressing frame 704 via a bearing. The surface of the pre-pressing roller 705 is provided with... The annular grooves 706 are arranged in multiple sets at equal intervals. The upper and lower edge-sealing cylinders 702 operate synchronously, pushing the push plate 703 and the pre-pressing frame 704 mounted on it to move towards each other, causing the pre-pressing roller 705 to press against the composite material. During the rolling and pressing process, the multiple sets of annular grooves 706 on the pre-pressing roller 705 can effectively expel the air between the film and the substrate, achieving preliminary pre-pressing and bonding, and eliminating air bubbles. Through the rolling pre-pressing of the pre-pressing roller 705, the preparatory work before edge sealing is completed in a gentle and efficient manner. The design of the annular grooves 706 increases the exhaust channels during pressing, improving the appearance quality and adhesion reliability of the edge sealing.

[0043] One end of the pre-compression frame 704 passes through the push plate 703, and the pre-compression frame 704 and the push plate 703 are slidably connected. A baffle 707 is fixedly connected to the end of the pre-compression frame 704 away from the pre-compression roller 705. The baffle 707 abuts against the push plate 703. Threaded grooves 708 are provided in the middle of the two side walls of the pre-compression frame 704. A threaded knob 709 is sleeved on the outer wall of the pre-compression frame 704. The threaded knob 709 is threadedly connected to the threaded groove 708. The pre-compression frame 704 can slide in the push plate 703. By turning the threaded knob 709, it can be screwed in or out of the threaded groove 708, thereby changing the initial elastic force of the auxiliary spring 711, and thus adjusting the pressing force of the pre-compression roller 705 on the material. The baffle 707 plays a limiting role. Operators can use this structure to quickly adapt to composite materials of different thickness ranges and realize the setting of basic pressure.

[0044] A pressure plate 710 is provided on the top of the threaded knob 709. An auxiliary spring 711 is provided between the pressure plate 710 and the push plate 703. The auxiliary spring 711 is sleeved on the outer wall of the pre-compression frame 704. Side pressure rollers 712 are provided on both sides of the pre-compression frame 704. The auxiliary spring 711 is compressed between the pressure plate 710 and the push plate 703, providing a continuous and flexible pressure for the pre-compression frame 704. When encountering material with slight thickness differences or small protrusions, the pre-compression frame 704 can compress the spring and retreat, playing a buffering role and avoiding damage to the material. After pre-compression is completed, the material continues to advance. The edges of the film material on both sides are gradually bent and wrapped and compacted towards the side of the substrate by the side pressure rollers 712 fixed on the pre-compression frame 704.

[0045] A pressure sensor 9 is installed at the connection between the pre-compression frame 704 and the pre-compression roller 705. A PLC controller 10 is installed inside the electrical cabinet 8. A signal receiving module 11 is installed on one side of the PLC controller 10. The pressure sensor 9 monitors the actual pressure value applied to the material by the pre-compression roller 705 in real time and transmits the pressure signal to the PLC controller 10 through the signal receiving module 11. The PLC controller 10 compares the received real-time pressure value with the preset ideal pressure value and outputs control commands based on the comparison result.

[0046] A die-cutting mechanism 12 is provided on one side of the edge-binding mechanism 7. The die-cutting mechanism 12 includes a stamping cylinder 121, an upper die base 122, a lower die base 123, a guide post 124, and a buffer spring 125. A stamping cylinder 121 is provided on one side of the top of the work box 5. The output end of the stamping cylinder 121 is fixedly connected to the upper die base 122. A lower die base 123 is provided on the surface of the horizontal worktable 4. The lower die base 123 matches the upper die base 122. A guide post 124 is fixedly connected to the edge of the lower die base 123. The top end of the guide post 124 penetrates through the upper die base 122. A buffer spring 125 is fitted on the outer wall of 124. The composite material with the edge wrapped is conveyed to the lower die base 123. The stamping cylinder 121 drives the upper die base 122 to move downward to die-cut the material. The guide column 124 ensures that the upper die base 122 moves along a precise vertical path to avoid skewing. The buffer spring 125 is compressed at the beginning of the stamping process to provide a force that is soft at first and then hard, avoiding rigid impact of the cutting edge on the material. This can effectively reduce the instantaneous impact force on the die cutting edge and the material, greatly extend the service life of the die, and reduce equipment maintenance costs and downtime.

[0047] The output end of the frame 1 is equipped with a receiving box 13, the top of the work box 5 is equipped with a high-definition camera 14, a waste box 15 is equipped on one side of the receiving box 13, and a rejection cylinder 16 is equipped on one side of the end of the horizontal worktable 4. After the die-cut product is completed, it continues to the receiving end. The high-definition camera 14 acts as a vision sensor to photograph and detect the finished product, and judges whether there are bubbles or wrinkles in the edge binding or whether there are burrs or dimensional deviations in the die cutting. The image data is transmitted to the PLC controller 10 for analysis. If it is judged to be a good product, it falls into the receiving box 13. If it is judged to be a defective product, the PLC controls the rejection cylinder 16 to push it into the waste box 15 for separation, realizing the automatic rejection of defective products, ensuring that the finished products flowing out of the equipment are qualified, and realizing the automatic collection of waste, keeping the production environment clean, and further improving the automation and intelligence level of the equipment.

[0048] The implementation principle of this application embodiment is as follows: First, the operator installs the graphite substrate roll, the upper insulating film roll, and the lower insulating film roll onto the corresponding unwinding rollers of the feeding mechanism 2. The conveyor motor 204 drives the drive roller 201 to rotate, thereby driving the substrate conveyor belt 203 to circulate and continuously convey the graphite substrate forward. The film conveying assembly 3 synchronously conveys the upper and lower insulating films to the upper and lower surfaces of the substrate. All materials then enter the core processing area encapsulated by the work box 5. The synchronous motor 303 drives the film unwinding roller 301 to rotate and release the film. The released film is guided by the guide roller 302 and is precisely guided to cover the upper and lower surfaces of the substrate running on the substrate conveyor belt 203. Two sets of symmetrically arranged film unwinding rollers 301 and guide rollers 302 achieve synchronous and centered supply of the upper and lower insulating films. When the substrate covered with film material moves to the positioning station, the symmetrically installed photoelectric sensors 601 first detect the edge position of the composite material and feed the signal back to the signal receiving module 11. Subsequently, the PLC controller 10 controls the micro cylinders 602 on both sides to push the positioning blocks 603 to clamp the composite material from the left and right sides, completing the lateral positioning correction. The electric push rod 604 pushes the limit plate 605 up and down, which can stop the composite material in the correct position, completing the longitudinal positioning. The upper and lower edge-wrapping cylinders 702 move synchronously to push the push plate 703 and the pre-compression frame 7 installed on it. The opposing motion of the 04 pre-pressing rollers 705 presses the composite material against the pre-pressing rollers 705. During the rolling and pressing process, the multiple sets of annular grooves 706 on the pre-pressing rollers 705 effectively expel air between the film and the substrate, achieving preliminary pre-pressing and bonding, and eliminating air bubbles. Through the rolling pre-pressing of the pre-pressing rollers 705, the preparatory work before edge wrapping is completed in a gentle and efficient manner. The design of the annular grooves 706 increases the venting channels during pressing, improving the appearance quality and adhesion reliability of the edge wrapping. The edges of the film on both sides are gradually bent and pressed towards the side of the substrate by the side pressure rollers 712 fixed on the pre-pressing frame 704. The composite material with the edge wrapped is then conveyed to the lower mold base 123, and the stamping cylinder 1... 21 drives the upper die holder 122 to move downwards to die-cut the material. After die-cutting, the product continues to move to the receiving end. The high-definition camera 14 acts as a vision sensor to photograph and detect the finished product, judging whether there are bubbles or wrinkles on the edge, or whether there are burrs or dimensional deviations in the die-cutting. The image data is transmitted to the PLC controller 10 for analysis. If it is judged to be a good product, it falls into the receiving box 13. If it is judged to be a defective product, the PLC controls the rejection cylinder 16 to push it into the waste box 15 for separation, realizing the automatic rejection of defective products, ensuring that the finished products flowing out of the equipment are qualified, and realizing the automatic collection of waste materials, maintaining the cleanliness of the production environment, and further improving the automation and intelligence level of the equipment.

[0049] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A graphite sheet edge-wrapping die-cutting device, comprising a frame (1), characterized in that: A feeding mechanism (2) is provided on one side of the frame (1). The feeding mechanism (2) includes a drive roller (201), a driven roller (202), a substrate conveyor belt (203), and a conveyor motor (204). The drive roller (201) is connected to one side of the frame (1) via a bearing. The driven roller (202) is provided on one side of the drive roller (201). The drive roller (201) and the driven roller (202) are connected by the substrate conveyor belt (203). The conveyor motor (204) is provided on one side of the frame (1). A film material conveying assembly (3) is provided on one side of the feeding mechanism (2). A horizontal worktable (4) is provided on the upper surface of the frame (1). A work box (5) is provided on the top of the horizontal worktable (4). A positioning mechanism (6) is provided on one side of the inside of the work box (5). An edge-binding mechanism (7) is provided on one side of the positioning mechanism (6). An electrical cabinet (8) is provided in the middle of the frame (1).

2. The graphite sheet edge-wrapping die-cutting equipment according to claim 1, characterized in that: The membrane material conveying assembly (3) includes a membrane material unwinding roller (301), a guide roller (302), and a synchronous motor (303). The membrane material unwinding roller (301) is connected to one side of the frame (1) via a bearing. There are two sets of membrane material unwinding rollers (301), and the two sets of membrane material unwinding rollers (301) are respectively located on both sides of the substrate conveyor belt (203). A guide roller (302) is provided on one side of the membrane material unwinding roller (301). A synchronous motor (303) is provided on the outer wall of one side of the frame (1). The output end of the synchronous motor (303) is connected to the membrane material unwinding roller (301).

3. The graphite sheet edge-wrapping die-cutting equipment according to claim 1, characterized in that: The positioning mechanism (6) includes a photoelectric sensor (601), a miniature cylinder (602), a positioning block (603), an electric push rod (604), and a limiting plate (605). The photoelectric sensor (601) is symmetrically installed on the inner walls of the top two sides of the work box (5). The work box (5) is provided with miniature cylinders (602) on both sides. The output end of the miniature cylinder (602) is connected to the positioning block (603). The inner wall of the top side of the work box (5) is provided with an electric push rod (604). The output end of the electric push rod (604) is connected to the limiting plate (605).

4. The graphite sheet edge-wrapping die-cutting equipment according to claim 1, characterized in that: The edge-binding mechanism (7) includes an edge-binding frame (701), an edge-binding cylinder (702), a push plate (703), a pre-pressure frame (704), a pre-pressure roller (705), an annular groove (706), a baffle plate (707), a threaded groove (708), a threaded knob (709), a pressure plate (710), an auxiliary spring (711), and a side pressure wheel (712). The edge-binding frame (701) is embedded in the middle of the horizontal worktable (4). Both the upper and lower inner walls are fixedly connected with edge-binding cylinders (702), and the ends of the edge-binding cylinders (702) are fixedly connected with push plates (703). Each of the two sets of push plates (703) is embedded with a pre-pressure frame (704) on one side opposite to the other. The middle part of the pre-pressure frame (704) is connected to a pre-pressure roller (705) through a bearing. The surface of the pre-pressure roller (705) is provided with an annular groove (706). There are multiple sets of annular grooves (706) arranged at equal intervals.

5. The graphite sheet edge-wrapping die-cutting equipment according to claim 4, characterized in that: One end of the pre-pressing frame (704) passes through the push plate (703). The pre-pressing frame (704) and the push plate (703) are slidably connected. A baffle (707) is fixedly connected to the end of the pre-pressing frame (704) away from the pre-pressing roller (705). The baffle (707) abuts against the push plate (703). Threaded grooves (708) are provided in the middle of the two side walls of the pre-pressing frame (704). A threaded knob (709) is sleeved on the outer wall of the pre-pressing frame (704). The threaded knob (709) is threadedly connected to the threaded groove (708).

6. The graphite sheet edge-wrapping die-cutting equipment according to claim 5, characterized in that: The top of the threaded knob (709) is provided with a pressure plate (710), and an auxiliary spring (711) is provided between the pressure plate (710) and the push plate (703). The auxiliary spring (711) is sleeved on the outer wall of the pre-pressure frame (704), and side pressure rollers (712) are provided on both sides of the pre-pressure frame (704).

7. The graphite sheet edge-wrapping die-cutting equipment according to claim 6, characterized in that: A pressure sensor (9) is provided at the connection between the pre-compression frame (704) and the pre-compression roller (705). A PLC controller (10) is provided inside the electrical cabinet (8). A signal receiving module (11) is provided on one side of the PLC controller (10).

8. The graphite sheet edge-wrapping die-cutting equipment according to claim 4, characterized in that: The edge-binding mechanism (7) is provided with a die-cutting mechanism (12) on one side. The die-cutting mechanism (12) includes a stamping cylinder (121), an upper die holder (122), a lower die holder (123), a guide column (124), and a buffer spring (125). The top side of the work box (5) is provided with a stamping cylinder (121). The output end of the stamping cylinder (121) is fixedly connected to the upper die holder (122). The surface of the horizontal worktable (4) is provided with a lower die holder (123). The lower die holder (123) matches the upper die holder (122).

9. A graphite sheet edge-wrapping die-cutting device according to claim 8, characterized in that: The lower mold base (123) is fixedly connected to a guide post (124) at its edge. The top of the guide post (124) penetrates the upper mold base (122), and a buffer spring (125) is sleeved on the outer wall of the guide post (124).

10. A graphite sheet edge-wrapping die-cutting device according to claim 8, characterized in that: The discharge end of the frame (1) is provided with a receiving box (13), the top of the working box (5) is provided with a high-definition camera (14), a waste box (15) is provided on one side of the receiving box (13), and a rejection cylinder (16) is provided on one side of the end of the horizontal worktable (4).

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