A sheet film press protection device

Abstract

The utility model discloses a kind of sheet film press film protection devices, belong to sheet film processing technical field;It includes: bearing assembly, clamping assembly and press film component, the bearing assembly includes the base for receiving sheet film after coating film;The clamping assembly includes the clamping unit of openable and closable, two The clamping unit is respectively arranged at the both ends of the base, to supply automatic clamping sheet film;The press film component includes the support arm and press film unit being arranged opposite the base, the press film unit includes the press film head of sliding joint with the support arm and the press film piece for extruding sheet film, at least two The press film piece is detachably connected with the press film head, the press film head can drive the press film piece linearly moves along the base.The utility model can eliminate the wrinkle and bubble between sheet film and protective film.

Description

Technical Field

[0001] This utility model relates to the field of sheet film processing technology, and in particular to a sheet film pressing and protection device. Background Technology

[0002] Sheet film, as an important industrial material, is widely used in packaging, medical, electronics, optics, and other fields. Depending on the application, sheet film needs to possess different physical properties, such as transparency, breathability, water resistance, and conductivity. During the production process, large-size sheet film typically needs to undergo warehousing and transportation before proceeding to the next stage. To protect the surface of the sheet film from scratches or contamination, it is usually laminated on both sides, covering it with a protective film.

[0003] However, existing lamination processes have significant drawbacks. During the lamination process, air bubbles and wrinkles easily form between the sheet film and the protective film. This not only affects the product's appearance quality but also severely reduces the bonding strength between the protective film and the sheet film. The presence of air bubbles and wrinkles leads to weak adhesion between the protective film and the sheet film, making it prone to detachment during subsequent transportation, storage, and use. Furthermore, these defects also affect the optical performance and usability of the sheet film, especially in applications requiring high surface flatness, such as optical films and electronic displays. Utility Model Content

[0004] In view of this, it is necessary to provide a sheet film pressing and protection device to solve the problem of wrinkles and bubbles between existing sheet films and protective films.

[0005] This utility model provides a sheet film pressing protection device, comprising: A support assembly, the support assembly including a base for receiving the coated sheet film; A clamping assembly, comprising openable and closable clamping units, two of which are respectively disposed at both ends of the base for automatically clamping sheet film; A film pressing assembly includes a support arm disposed relative to the base and a film pressing unit. The film pressing unit includes a film pressing head slidably engaged with the support arm and a film pressing sheet for pressing a sheet film. At least two of the film pressing sheets are detachably connected to the film pressing head, and the film pressing head can drive the film pressing sheets to move linearly along the base.

[0006] Furthermore, the pressure plate is inclined relative to the base.

[0007] Furthermore, the pressure sheet is an elastic pressure sheet, and the pressure sheet is connected to the pressure head by a fastener.

[0008] Furthermore, a linear drive unit is provided between the pressing head and the support arm. The pressing head is connected to the support arm through the linear drive unit, and the linear drive unit can drive the pressing head to move linearly relative to the support arm.

[0009] Furthermore, the linear drive unit is a lead screw and nut pair, a linear guide, or a gear and rack mechanism.

[0010] Furthermore, the pressing assembly also includes a rotatable rotating arm, one end of which is connected to one end of the support arm. The rotating arm can drive the support arm to rotate relative to the base, thereby adjusting the height of the pressing head and the pressing sheet relative to the base.

[0011] Furthermore, the clamping unit includes a U-shaped member and a movable extrusion block. One side of the U-shaped member is connected to the base to form a space for clamping the sheet film. The extrusion block is inserted into the U-shaped member and can press the edge of the sheet film.

[0012] Furthermore, the clamping unit also includes a driving member, the fixed end of which is connected to the outside of the U-shaped member, and the movable end of which is connected to the extrusion block. The driving member is capable of driving the extrusion block to move relative to the base.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) A sheet film pressing protection device of the present invention is provided with a pressing assembly. The pressing assembly includes a pressing head that is slidably engaged with a support arm and a pressing sheet for pressing the sheet film. At least two pressing sheets are detachably connected to the pressing head. The pressing head can drive the pressing sheet to move linearly along the base. The linear movement of the pressing sheet can realize continuous linear extrusion of the sheet film, completely eliminate air between the film layers, and make the protective film and the sheet film form a uniform and tight fit.

[0014] (2) A sheet film pressing protection device of the present invention is provided with a clamping assembly. The clamping assembly includes an openable and closable clamping unit. The two clamping units are respectively disposed at both ends of the base. The two clamping units can clamp the two ends of the sheet film respectively, which can effectively prevent the pressing deviation caused by the displacement of the film and adapt to the processing of sheet films of different sizes and specifications. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the medium-pressure membrane unit of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the medium-pressure membrane unit of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the clamping unit in this utility model.

[0016] In the diagram, 100 is the load-bearing component; 110 is the base. 200. Clamping assembly; 210. Clamping unit; 211. U-shaped part; 212. Extrusion block; 213. Driving component; 300, Film pressing assembly; 310, Support arm; 320, Film pressing unit; 321, Film pressing head; 322, Film pressing sheet; 330, Linear drive unit; 340, Rotary arm. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0018] This embodiment of a sheet film pressing and protection device relates to the field of sheet film processing technology. The pressing head 321 drives the detachable pressing sheet 322 to move linearly along the base 110. The pressing sheet 322 can effectively eliminate wrinkles and bubbles generated during the film coating process, and has the advantage of improving the bonding strength between the protective film and the sheet film.

[0019] Please see Figures 1 to 5 The sheet film pressing and protection device in this embodiment includes: a carrying component 100, a clamping component 200 and a pressing component 300. The carrying component 100 can carry the sheet film after lamination, the clamping component 200 can clamp and fix the sheet film, and the pressing component 300 can squeeze the sheet film, expel air bubbles between the sheet film and the protective film, and smooth out the wrinkles of the protective film.

[0020] The support component 100 includes a base 110, which can support the sheet film from below and provide effective support for the sheet film.

[0021] The clamping assembly 200 includes openable and closable clamping units 210. The two clamping units 210 are respectively disposed at both ends of the base 110. The two clamping units 210 can clamp the two ends of the sheet film respectively, which can effectively prevent the pressing deviation caused by the displacement of the film and adapt to the processing of sheet films of different sizes and specifications.

[0022] The film pressing assembly 300 includes a film pressing head 321 that is slidably engaged with the support arm 310 and a film pressing sheet 322 for pressing the sheet film. At least two film pressing sheets 322 are detachably connected to the film pressing head 321. The film pressing head 321 can drive the film pressing sheet 322 to move linearly along the base 110. The linear movement of the film pressing sheet 322 can realize continuous linear extrusion of the sheet film, completely eliminate air between the film layers, and make the protective film and the sheet film form a uniform and tight fit.

[0023] During use, the base 110 is horizontally fixed as the working reference, and the coated sheet film is laid flat on the surface of the base 110. The clamping unit 210 closes simultaneously at both ends of the base 110, firmly fixing the edges of the sheet film. The support arm 310 spans above the base 110, and the pressing head 321 slides along the length of the support arm 310, driving two or more pressing sheets 322 to move at a constant speed from one end of the base 110 to the other. The pressing sheets 322 form surface contact with the surface of the base 110, continuously squeezing the film layer during movement, gradually expelling internal air along the direction of movement. After completing a single stroke, the pressing head 321 can quickly return to the starting position to prepare for the next operation.

[0024] In some embodiments, please refer to Figure 3 and Figure 4 The pressure film 322 is inclined relative to the base 110. By introducing horizontal shear force, the inclined pressure film 322 can more effectively guide air bubbles and wrinkles to the edge, reducing residual defects. The pressure film 322 can significantly improve the elimination of air bubbles and wrinkles on the surface of the sheet film after lamination, improve the uniformity of bonding between the protective film and the sheet film, thereby enhancing the connection strength and improving the appearance quality.

[0025] In practical implementation, the pressure plate 322 is an elastic component used to apply pressure to the surface of the sheet film. It can be made of polymer material, and its tilt angle can be adjusted by a hinge mechanism or an adjustable bracket. This tilt setting enables the pressure plate 322 to form a non-perpendicular contact with the surface of the sheet film during the pressing process, thereby generating an oblique component force during movement, gradually pushing air bubbles and wrinkles to the edge. When the pressing head 321 drives the pressing sheet 322 to move linearly along the base 110, the inclined pressing sheet 322 contacts the surface of the coated sheet film at a certain angle. Since the pressing sheet 322 forms an acute or obtuse angle with the base 110, the force exerted on the sheet film by the pressing sheet 322 during movement is decomposed into a vertical normal force and a horizontal shear force. The normal force ensures a tight fit between the protective film and the sheet film, while the shear force pushes air bubbles between the film layers to move laterally along the inclined direction, simultaneously smoothing out wrinkles. For example, the inclination angle of the pressing sheet 322 can be set from 30° to 60°, adapting to sheet films of different materials by adjusting the angle.

[0026] In some embodiments, the pressure sheet 322 is an elastic pressure sheet 322. The elastic pressure sheet 322 actively adheres to the film surface through its material properties, which can adapt to local deformation of the film surface and completely eliminate any residual air bubbles or wrinkles after pressing. The pressure sheet 322 is connected to the pressing head 321 by a fastener, which allows the pressure sheet 322 to be replaced when damaged.

[0027] In practical implementation, the elastic pressure diaphragm 322 is a sheet-like structure made of a material with elastic deformation capabilities, specifically rubber, silicone, or polyurethane. Its elastic properties can adapt to the slight undulations on the surface of the sheet film, compensating for unevenness in the film surface through deformation during the pressing process. The fasteners are mechanical structures used to achieve detachable connections, specifically using snap-fit, bolt, or pin structures. The fastener connection establishes a separable and fixed relationship between the pressure diaphragm 322 and the pressure head 321.

[0028] When the pressing head 321 needs to move linearly along the surface of the base 110, the linear drive unit 330 receives external power input and converts it into linear thrust, driving the pressing head 321 to translate along the extension direction of the support arm 310. During this process, the pressing sheet 322 remains in continuous contact with the surface of the sheet film, and the uniform pressure generated by the linear movement gradually squeezes out air bubbles and wrinkles between the coating layer and the sheet film. The moving path of the pressing head 321 is parallel to the length direction of the base 110, so that the pressing sheet 322 can cover the entire area of ​​the sheet film. At the same time, the detachable pressing sheet 322 can be replaced according to different film thicknesses to ensure that the pressure applied is adapted to the material characteristics.

[0029] In some embodiments, please refer to Figure 1 and Figure 2 The linear drive unit 330 is a lead screw and nut pair, a linear guide, or a gear and rack mechanism. These three drive methods achieve higher repeatability and positioning accuracy through a mechanical transmission structure. The pressure head 321 moves without offset or jitter, and the appropriate drive type can be selected according to different working conditions. The lead screw and nut assembly is a mechanism that converts rotary motion into linear motion through threaded transmission. Specifically, it can be implemented using a precision lead screw with ball bearings and a nut, achieving high-precision positioning and reducing frictional losses. The linear guide rail is a mechanism that guides the slider through rolling friction between the slider and the rail. Specifically, it can be implemented using a linear guide rail with ball bearings or rollers, ensuring the smoothness and straightness of the pressure head 321's movement. The gear and rack mechanism is a mechanism that achieves linear motion through the meshing of gears and racks. Specifically, it can be implemented using a combination of hardened steel gears and racks, suitable for applications requiring large driving forces or long strokes. When the pressure head 321 needs to move linearly along the support arm 310, the lead screw and nut pair is driven by a motor to rotate the lead screw, which in turn moves the nut and the connected pressure head 321. The linear guide rail is driven by an external drive mechanism to push the pressure head 321 along the rail. The gear and rack mechanism drives the rack and pressure head 321 to translate through gear rotation. All three methods can precisely control the movement trajectory of the pressure head 321, ensuring that the pressure sheet 322 advances linearly along the surface of the base 110 with constant pressure, thereby evenly eliminating air bubbles and wrinkles generated during the coating process.

[0030] In some embodiments, please refer to Figure 1 and Figure 2 The film pressing assembly 300 also includes a rotatable rotating arm 340, one end of which is connected to one end of the support arm 310. The rotating arm 340 can drive the support arm 310 to rotate relative to the base 110. The rotating arm 340 and the support arm 310 form a linkage structure, enabling the film pressing unit 320 to have vertical position adjustment capability. The film pressing unit 320 can quickly adjust the working height of the film pressing sheet 322, thereby facilitating the loading and unloading of the sheet film.

[0031] In practical implementation, the rotating arm 340 is a robotic arm structure with rotational function, which can be implemented by a motor-driven rotating shaft or a pneumatic rotating mechanism, changing the spatial position of the support arm 310 through rotational motion. The support arm 310 is a rigid support for bearing the pressing unit 320, which can be implemented by metal profiles or high-strength alloy materials, used to maintain the relative positional relationship between the pressing unit 320 and the base 110.

[0032] When the rotating arm 340 rotates around its axis, the angle between the support arm 310 and the base 110 changes, causing the pressing head 321 and the pressing sheet 322 to rise or fall as a whole. By adjusting the rotation angle of the rotating arm 340, the working space between the sheet film and the pressing sheet 322 can be adjusted, avoiding interference between the sheet film and the pressing head 321 when loading and unloading the sheet film.

[0033] In some embodiments, please refer to Figure 5 The clamping unit 210 includes a U-shaped component 211 and a movable extrusion block 212. One side of the U-shaped component 211 is connected to the base 110, forming a space for clamping the sheet film. The extrusion block 212 is inserted into the U-shaped component 211, and the U-shaped component 211 and the extrusion block 212 can form a mating structure, so that the clamping force is uniformly transmitted along the longitudinal direction of the film edge. At the same time, the stroke control of the linear drive component 213 can adapt to the clamping requirements of film materials of different thicknesses, avoiding the operational errors of manually adjusting the clamp spacing. By replacing manual clamping operation with mechanical drive, clamping efficiency and consistency are improved, providing a reliable positioning basis for subsequent lamination processes.

[0034] In the specific implementation process, the U-shaped component 211 is a fixed component with a U-shaped cross-section, which can be made of metal stamping or injection molding. After its open side is connected to the base 110, it forms a clamping space to accommodate the edge of the sheet film. Among them, the extrusion block 212 is a moving component that cooperates with the inner wall of the U-shaped component 211. It can be made of a metal block with anti-slip texture on the surface. It is moved along the inner wall of the U-shaped component 211 by the thrust of the linear drive component 213, thereby applying pressure to the edge of the sheet film.

[0035] The side of the sheet film is inserted into the clamping space formed by the U-shaped member 211 and the base 110. The extrusion block 212 and the inner wall of the U-shaped member 211 work together to press the edge of the sheet film tightly against the surface of the base 110. Since the opening size of the U-shaped member 211 can be adapted to sheet films of different thicknesses, the movement trajectory of the extrusion block 212 is restricted inside the U-shaped member 211, so that the stress area of ​​the edge of the sheet film remains uniform during the clamping process, avoiding local stress concentration that could lead to film deformation. In some embodiments, please refer to Figure 5 The clamping unit 210 also includes a linear drive 213. The fixed end of the linear drive 213 is connected to the outside of the U-shaped part 211, and the movable end of the linear drive 213 is connected to the extrusion block 212. Automated clamping control is achieved through the linear drive 213, which not only shortens the operation time, but also ensures that the force and stroke of each clamping action are consistent through programmed control. It is especially suitable for the high-frequency operation requirements of continuous production lines. In the specific implementation process, the linear drive 213 is a power device capable of generating linear motion, which can be implemented by an electric push rod, hydraulic cylinder, or pneumatic cylinder. Its function is to provide controllable linear displacement power for the extrusion block 212. After the sheet film is placed on the base 110, the linear drive 213 receives a control signal and drives its movable end to extend, pushing the extrusion block 212 along the guide groove of the U-shaped part 211 towards the base 110. As the extrusion block 212 gradually presses into the opening area of ​​the U-shaped part 211, the edge of the sheet film is clamped between the extrusion block 212 and the side wall of the U-shaped part 211. During this process, the constant thrust provided by the linear drive 213 keeps the extrusion block 212 under stable clamping pressure, avoiding clamping failure caused by uneven manual operation force. When it is necessary to release the sheet film, the linear drive 213 moves in the opposite direction, causing the extrusion block 212 to retract, releasing the constraint on the sheet film.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

Claims

1. A sheet film pressing protection device, characterized in that, include: A support assembly, the support assembly including a base for receiving the coated sheet film; A clamping assembly, comprising openable and closable clamping units, two of which are respectively disposed at both ends of the base for automatically clamping sheet film; A film pressing assembly includes a support arm disposed relative to the base and a film pressing unit. The film pressing unit includes a film pressing head slidably engaged with the support arm and a film pressing sheet for pressing a sheet film. At least two of the film pressing sheets are detachably connected to the film pressing head, and the film pressing head can drive the film pressing sheets to move linearly along the base.

2. The sheet film pressing protection device according to claim 1, characterized in that, The pressure plate is inclined relative to the base.

3. The sheet film pressing protection device according to claim 1, characterized in that, The pressure sheet is an elastic pressure sheet, and the pressure sheet is connected to the pressure head by fasteners.

4. The sheet film pressing protection device according to claim 1, characterized in that, A linear drive unit is provided between the pressing head and the support arm. The pressing head is connected to the support arm through the linear drive unit, and the linear drive unit can drive the pressing head to move linearly relative to the support arm.

5. The sheet film pressing protection device according to claim 4, characterized in that, The linear drive unit is a lead screw and nut pair, a linear guide, or a gear and rack mechanism.

6. The sheet film pressing protection device according to claim 1, characterized in that, The pressing assembly also includes a rotatable rotating arm, one end of which is connected to one end of the support arm. The rotating arm can drive the support arm to rotate relative to the base, so as to adjust the height of the pressing head and the pressing sheet relative to the base.

7. The sheet film pressing protection device according to claim 1, characterized in that, The clamping unit includes a U-shaped member and a movable extrusion block. One side of the U-shaped member is connected to the base to form a space for clamping the sheet film. The extrusion block is inserted into the U-shaped member and can press the edge of the sheet film.

8. The sheet film pressing protection device according to claim 7, characterized in that, The clamping unit also includes a driving member, the fixed end of which is connected to the outside of the U-shaped member, and the movable end of which is connected to the extrusion block. The driving member can drive the extrusion block to move relative to the base.

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