Novel film pasting mechanism

Abstract

A novel film pasting mechanism belongs to the technical field of precision machinery manufacturing and automatic equipment, is an automatic film pasting mechanism for graphite flake adsorption in magnetic attraction charging equipment, and comprises a structure main body, a multi-suction-nozzle floating assembly, an adjusting module, a pressure control unit and a dynamic feedback system, through deep integration of precise mechanical design and an intelligent feedback system, high precision, high efficiency and high compatibility of a graphite sheet attaching process are achieved, the core pain point in manufacturing of magnetic attraction charging equipment is solved, a standardized technical scheme is provided for the field of precise film attaching, and remarkable technical advancement and commercial popularization value are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of precision machinery manufacturing and automation equipment technology, and in particular relates to a high-precision and high-efficiency graphite bonding process, specifically an automated film bonding mechanism for attaching graphite sheets in magnetic charging equipment. Background Technology

[0002] In the manufacturing of magnetic charging devices (such as power banks and wireless charging modules), graphite sheets are widely used for heat dissipation and electromagnetic shielding due to their excellent thermal conductivity and insulation. However, existing film bonding processes mostly use one or more fixed nozzles for bonding, which has the following technical bottlenecks: (1) Insufficient bonding accuracy: Graphite sheets are extremely thin, usually 0.1-0.3mm. Traditional film bonding mechanisms have difficulty controlling the pressure evenly applied to all parts of the graphite sheet, which can easily lead to material wrinkles or damage; (2) Poor adaptability: Different products have different requirements for the shape and thickness of graphite sheets, and most graphite sheets are not simple shapes. Existing fixed nozzles cannot flexibly adjust the height difference and levelness, resulting in uneven bonding; (3) Lack of real-time feedback: Traditional equipment relies on mechanical limits and cannot dynamically monitor the bonding pressure through sensors. Overpressure can easily damage the graphite sheet or underpressure can lead to bonding failure. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention proposes a high-precision, high-efficiency film-applying mechanism for graphite sheet bonding.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] A novel film-applying mechanism includes a main structure, a multi-nozzle floating assembly, an adjustment module, a pressure control unit, and a dynamic feedback system. The multi-nozzle floating assembly consists of at least five independent floating nozzles, each mounted to the main structure via a nozzle slide rail. The adjustment module includes limit screws, with each nozzle individually adjustable for its horizontal and vertical height differences. The pressure control unit includes spring plungers, with each nozzle connected to a spring stopper providing constant application pressure. A pressure sensor collects overall pressure data in real time. The dynamic feedback system includes a control system, with the pressure sensor connected to the control system. Based on the feedback data, the system dynamically adjusts the nozzle pressure to ensure uniform application of the graphite sheet.

[0006] In this utility model, the main structure is vertically arranged, and a horizontal mounting frame is provided on the upper part of the main structure. Each suction nozzle floating component includes a suction nozzle and a mounting component. The suction nozzle is located at the lower end and is fixedly connected to the mounting component. The limiting screw and the spring plunger are both located on the upper part of the mounting component. A through hole for the limiting screw to pass through is opened at the corresponding position of the mounting frame. The limiting screw slides in the through hole. A limiting nut is provided at the upper end of the limiting screw, and the lower end is precisely screwed to the mounting component. The upper end of the spring plunger is fixedly connected to the mounting frame, and the lower end is connected to the mounting component.

[0007] Furthermore, a suction nozzle slide rail and a slider are provided between the mounting component and the main structure, and the slider and the mounting component are an integral structure, which provides stroke constraints for the lifting and lowering of the suction nozzle floating component.

[0008] Furthermore, the upper part of the mounting frame is provided with a mounting plate, which is connected to a drive mechanism that drives the entire film application mechanism to move up and down. The left and right sides of the mounting frame are provided with mutually cooperating support blocks and frame slide rails. The support blocks and frame slide rails are fixedly connected to the mounting frame or mounting plate, respectively. The frame slide rails and the nozzle slide rails realize a two-stage slide rail buffer for the nozzle.

[0009] Furthermore, a pressure sensor is provided between the mounting frame and the mounting plate.

[0010] In this invention, both the nozzle slide rail and the frame slide rail are linear high-precision slide rails, and their surfaces are coated with a wear-resistant coating to ensure the positioning accuracy of the nozzle during repeated movements.

[0011] In this invention, the elastic modulus of the spring plunger is 0.2-2.0 N / mm, which is suitable for the compressive strength range of the graphite sheet (10-50 MPa).

[0012] In this invention, the limiting screw adopts a micron-level thread structure, with an adjustment accuracy of ±0.01mm.

[0013] In this invention, the end of the suction nozzle is covered with a flexible silicone layer, and its contact surface with the graphite sheet is designed to conform to the plane or curved surface of the graphite sheet.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] (1) Improve the bonding accuracy and yield rate. This application uses the fine thread design of the limit screw combined with the elastic compensation of the spring plunger to make the height adjustment accuracy of the suction nozzle reach ±0.01 mm, which is suitable for the ultra-thin characteristics of graphite sheets. It effectively avoids material wrinkles or damage caused by height deviation, and the yield rate is increased to more than 99%. The five suction nozzles can be independently adjusted for horizontal and vertical height difference through the slide rail, which can adapt to uneven or irregular workpiece surfaces and ensure uniform bonding of graphite sheets with local pressure deviation ≤5%.

[0016] (2) Enhance equipment versatility and production efficiency: The combination of the nozzle slide rail and the nozzle assembly in this application is a modular design, which supports quick replacement of different specifications of nozzles. The pressure sensor monitors the bonding pressure in real time, and combined with the PID closed-loop control algorithm of the drive mechanism, it can realize millisecond-level response adjustment, improve production efficiency by 30%-40%, and the production capacity of a single machine reaches 2000 pieces / hour.

[0017] (3) Reduced maintenance costs and operational complexity: The wear-resistant coating applied to the nozzle slide rail and frame slide rail in this application can effectively extend the service life of the equipment. The height adjustment method of the limit screw makes the adjustment operation simple and quick.

[0018] (4) Expanding application scenarios: By replacing the flexible silicone layer at the end of the nozzle, this application can adapt to the application needs of multiple materials such as copper foil and thermal conductive film, in addition to graphite sheets. In addition to magnetic charging equipment, this solution can also be applied to precision manufacturing fields such as mobile phone screen film application and flexible circuit board packaging, with a wide market coverage.

[0019] (5) Good technical and economic benefits: This application can effectively reduce the production cost of single graphite sheet adsorption through high yield and low maintenance frequency, reduce graphite sheet damage, effectively reduce material waste, save energy and protect the environment, and promote the trend of composite green manufacturing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a front view of the present invention;

[0022] Figure 3 for Figure 2 A bottom view.

[0023] In the diagram: 1. Suction nozzle (a, b, c, d, e), 2. Mounting component, 3. Suction nozzle slide rail, 4. Limiting screw, 5. Limiting nut, 6. Spring plunger, 7. Support block, 8. Frame slide rail, 9. Mounting plate, 10. Pressure sensor, 11. Suction nozzle negative pressure air pipe, 12. Flexible silicone layer, 13. Mounting frame. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0025] A new type of film application mechanism, such as Figure 1-3 As shown, the structure includes a vertically oriented main body. Around the main body are five independent floating nozzle assemblies. Each floating nozzle assembly includes a nozzle 1 and a mounting component 2. The nozzle 1 is located at the bottom and is driven by a negative pressure air pipe 11. The distribution of nozzles 1 (a, b, c, d, e) is as follows: Figure 3 As shown, the end of the suction nozzle 1 is covered with a flexible silicone layer 12, and its contact surface with the graphite sheet is designed to conform to the plane or curved surface of the graphite sheet. The mounting part 2 and the main body of the structure are provided with a suction nozzle slide rail 3 and a slider that mesh with each other. The slider and the mounting part 2 are an integral structure. The upper part of the mounting part 2 is provided with a limit nut 5 and a spring plunger 6.

[0026] A horizontal mounting frame 13 is provided on the upper part of the main structure. The edge of the mounting frame 13 has a through hole for the limit screw 4 to pass through. The limit screw 4 slides in the through hole. A limit nut 5 is provided on the upper end of the limit screw 4. The limit nut 5 is located on the upper part of the through hole. The lower end of the limit screw 4 is precisely screwed to the mounting part 2. The upper end of the spring plunger 6 is fixedly connected to the mounting frame 13 and the upper end is connected to the mounting part 2.

[0027] The upper part of the mounting frame 13 is provided with a mounting plate 9, which is connected to a drive mechanism that drives the entire film application mechanism to lift and lower. The left and right sides of the mounting frame 13 are provided with mutually cooperating support blocks 7 and frame slide rails 8. The support blocks 7 are fixed to the upper side of the mounting frame 13, and the frame slide rails 8 are fixed to the left and right sides of the mounting plate 9. A pressure sensor 10 is provided between the mounting frame 13 and the mounting plate 9, and the pressure sensor 10 is located at the geometric center of the mounting frame 13 and the mounting plate 9.

[0028] Both the nozzle slide rail 3 and the frame slide rail 8 are coated with a wear-resistant coating.

[0029] This application is used for bonding graphite sheets. In practice, after aligning the floating assembly of the suction nozzle 1 with the graphite sheet, the suction nozzle 1 picks up the graphite sheet and moves it above the substrate material (such as copper foil). At this time, the support block 7 of the mounting frame 13 is located at the lower end of the frame slide rail 8, the limit nut 5 is in contact with the mounting frame 13, and the spring plunger 6 is in a relaxed state. The drive mechanism lowers the entire bonding mechanism. After the graphite sheet falls onto the substrate material, the mounting block rises along the suction nozzle slide rail 3, the limit screw 4 rises along the through hole of the mounting frame 13, and the spring plunger 6 provides elastic cushioning. Until the preset pressure position is reached, the mounting block, mounting frame 13, and main structure remain relatively stationary to provide uniform pressure for the bonding of the graphite sheet and the substrate material. The mounting frame 13 pushes the support block 7 to rise along the frame slide rail 8. The pressure sensor 10 detects the continuously rising pressure and feeds it back to the control system. Under the control of the closed-loop algorithm of the control system, the drive mechanism stops descending in time until the bonding is completed. Then the drive mechanism rises, the suction nozzle 1 releases the graphite sheet, the floating component of the suction nozzle 1 resets, and the adsorption and bonding of the next graphite sheet can begin.

[0030] In summary, based on the above structure and usage process, it can be seen that this utility model has a novel concept and ingenious design, achieving "high precision, high efficiency, and high compatibility" in the graphite sheet bonding process. It not only solves the core pain points in the manufacturing of magnetic charging devices, but also provides a standardized technical solution for the field of precision film bonding, demonstrating significant technological advancement and commercial promotion value.

Claims

1. A novel film pasting mechanism, characterized by: The utility model relates to a multi-nozzle floating assembly for graphite sheet coating, comprising: a structure body; a plurality of nozzle floating assemblies, each of which is installed on the structure body through a nozzle sliding rail; an adjusting module, each nozzle is equipped with a limiting screw to adjust the horizontal level and vertical height difference of the nozzle; a pressure control unit, each nozzle is connected with a spring plunger to provide constant adhesion pressure by spring blockage and collect overall pressure data in real time through a pressure sensor; a dynamic feedback system, the pressure sensor is connected with a control system to dynamically adjust the nozzle pressure according to feedback data and ensure uniform adhesion of graphite sheets.

2. The novel film pasting mechanism according to claim 1, characterized in that: The structure body is vertically arranged, and a horizontal mounting frame is arranged on the upper part of the structure body.

3. The novel film pasting mechanism according to claim 2, characterized in that: The mounting frame is provided with a limiting screw passing hole corresponding to the limiting screw on the upper part of the mounting frame.

4. The novel film pasting mechanism according to claim 3, characterized in that: The limiting screw is in sliding fit with the limiting screw passing hole, and the upper end of the limiting screw is provided with a limiting nut.

5. The novel film pasting mechanism according to claim 4, characterized in that: The lower end of the limiting screw is accurately screwed with the mounting piece.

6. The novel film pasting mechanism according to claim 1, wherein: The upper end of the spring plunger is fixedly connected with the mounting frame, and the lower end of the spring plunger is connected to the mounting piece.

7. The novel film pasting mechanism according to claim 1, characterized in that: The mounting piece and the structure body are provided with a nozzle sliding rail and a sliding block that are engaged with each other.

8. The novel film pasting mechanism according to claim 1, wherein: The sliding block and the mounting piece are in an integral structure.

9. The novel film pasting mechanism as claimed in claim 1, wherein: The upper part of the mounting frame is provided with a mounting plate connected to a driving mechanism for driving the entire film coating mechanism to ascend and descend. The left and right sides of the mounting frame are provided with a support block and a frame sliding rail that cooperate with each other. The support block and the frame sliding rail are fixedly connected with the mounting frame or the mounting plate, respectively. The mounting frame and the mounting plate are provided with a pressure sensor. The nozzle sliding rail and the frame sliding rail are linear high-precision sliding rails coated with a wear-resistant coating. The spring plunger has an elastic coefficient of 0.2-2.0 N / mm. The limiting screw adopts a micron-level thread structure, and the adjustment accuracy reaches ±0.01 mm. The nozzle tip is covered with a flexible silica gel layer, and the contact surface with the graphite sheet is designed to be profiled, matching the flat or curved surface of the graphite sheet.

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