Roller display support back plate pasting device

Abstract

The application relates to the technical field of display production, in particular to a roll pressing type display support back plate film pasting device, which comprises a rack, unwinding devices and two groups of side plates arranged on the rack, three groups of supporting rollers arranged between the two groups of side plates, the inside of the supporting rollers being a hollow structure, a plurality of groups of adsorption ports being circumferentially and equidistantly arranged on the supporting rollers and distributed along the length direction of the supporting rollers, first air guide pipes connected with the two groups of side plates, each of the two sides of the first air guide pipes being provided with a group of second air guide pipes, the second air guide pipes being capable of changing the direction of air entering the supporting rollers, pneumatic lifting assemblies arranged between the two groups of side plates, the pneumatic lifting assemblies being capable of driving the second air guide pipes to perform lifting and deflection actions, and pressing assemblies installed on the side plates, the pressing assemblies being provided with film pasting rollers in rolling cooperation with the supporting rollers, so that the process quality of film pasting is improved.

Description

Technical Field

[0001] This invention relates to the field of display manufacturing technology, specifically a roll-pressed display support backplate film application device. Background Technology

[0002] Existing displays mainly consist of a support backplate, a buffer / heat dissipation layer, a touch sensor, a display panel, a polarizer, an optical adhesive layer, and a cover glass. The support backplate primarily supports the aforementioned optical and electronic layers, improving their structural strength. Attaching a support film to the support backplate can effectively improve its scratch resistance, drop resistance, and interference resistance. Therefore, the quality of the support film attachment process is crucial to the performance of the support backplate.

[0003] For the film application of the support back panel, the existing technologies mainly adopt roller pressing and negative pressure adsorption. Among them, roller pressing is widely used because it is simple to operate and has low process requirements.

[0004] As monitor types evolve, roll-applied screen protectors face challenges for existing curved screens. Specifically, the curvature of mainstream curved screen monitors varies, and the support backplates are mostly made of aluminum alloy. To prevent deformation caused by the pressure during screen protector application, support components need to be installed on the back of the support backplate. For monitor backplates with different curvatures, multiple sets of support components with different curvatures are required, which increases the cost of screen protector application. Furthermore, when applying screen protectors to monitors with different curvatures, necessary preparation and adjustment work needs to be done before application. This process is time-consuming, cumbersome, and errors in adjustment can reduce the yield rate. Summary of the Invention

[0005] The purpose of this invention is to provide a roll-pressed display support backplate film application device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A roll-pressed display support backplate film application device includes:

[0008] A frame, on which an unwinding device and two sets of side plates are provided;

[0009] Three sets of support rollers are arranged between two sets of side plates. The inside of the support rollers is a hollow structure, and multiple sets of adsorption ports are equidistantly distributed along the length of the support rollers in a circular pattern.

[0010] The first air guide pipe is connected to the two sets of side plates. A second air guide pipe is provided on each side of the first air guide pipe. The second air guide pipe can change the direction of air entering the support roller.

[0011] A pneumatic lifting assembly is disposed between the two sets of side plates, and the pneumatic lifting assembly can drive the second air duct to perform lifting and deflection actions;

[0012] A pressure-applying component is mounted on the side plate, and the pressure-applying component is provided with a film-applying roller that rolls in cooperation with the support roller.

[0013] As a further aspect of the present invention: the support roller is rotatably sleeved on the outside of the first air guide pipe and the second air guide pipe, and the first air guide pipe and the second air guide pipe are respectively provided with a first strip hole and a second strip hole along their length direction;

[0014] The conduction width of the first and second strip holes is the same as the diameter of the adsorption port.

[0015] As a further embodiment of the present invention: a first sliding groove is provided on the side plate, and a slider is slidably installed in the first sliding groove, the slider being rotatably connected to the second air guide pipe;

[0016] The side plate is also equipped with a negative pressure generating device, which is connected to the first air duct and the second air duct through a conduit.

[0017] As a further embodiment of the present invention: a driving device is fixedly installed on the side plate, and a first gear is connected to the output shaft of the driving device;

[0018] A second gear is fixedly installed on the shaft of the support roller that rotates with the first air guide pipe, and the first gear meshes with the second gear.

[0019] As a further embodiment of the present invention: the pneumatic lifting assembly includes a connecting plate for connecting the slider and a first electric telescopic rod fixedly installed on the side plate, wherein the actuating end of the first electric telescopic rod is fixedly connected to the connecting plate;

[0020] The pneumatic lifting assembly also includes a sector gear fixedly connected to the rotating shaft of the second air duct, and the sector gear meshes with a rack plate disposed on the slider.

[0021] As a further embodiment of the present invention: the pneumatic lifting assembly further includes a traction structure for pulling the rack plate to drive the second air duct to rotate;

[0022] The traction structure includes a guide plate fixedly installed on the side plate and a first convex shaft fixedly connected to the rack plate. The guide plate is provided with an inclined groove, and the first convex shaft can slide in the inclined groove.

[0023] As a further embodiment of the present invention: the pressure application component includes:

[0024] A bracket fixedly connected to the side plate, the bracket being provided with a second electric telescopic rod and a second sliding groove;

[0025] A first sliding connector and a second sliding connector are slidably connected to the second chute. The first sliding connector is rotatably connected to the film-applying roller, and the second sliding connector is connected to the second electric telescopic rod.

[0026] The elastic structure and the stop structure connecting the first sliding connector and the second sliding connector, together with the stop structure, can control the movement of the film-applying roller towards or away from the support roller.

[0027] As a further embodiment of the present invention: the elastic structure includes a vertical shaft disposed in the second sliding groove and slidably connected to the first sliding connector and the second sliding connector, a cylindrical spring sleeved on the vertical shaft, one end of the cylindrical spring being connected to the first sliding connector and the other end being connected to the second sliding connector.

[0028] As a further embodiment of the present invention: the stop structure includes a vertical groove disposed on the second sliding connector and a second convex shaft fixedly installed on the first sliding connector, the second convex shaft being able to slide within the vertical groove.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] First, by changing the height of the two sets of second air ducts, the relative positions of the three sets of support rollers can be changed to match the display support backplates with different curvatures, ensuring good support stability for the display support backplates and ensuring the synchronization of the display support backplates with the support film during movement. Second, when the height of the two sets of air ducts changes, the orientation of the corresponding second strip hole will also change accordingly, so that the orientation of the second strip hole can correspond to the point where the display support backplate and the support roller are tangent. This ensures that when supporting display support backplates with different curvatures, the support roller can generate a stable adsorption force on the display support backplates. This can suppress the deformation of the display support backplates on the one hand, and make the movement of the display support backplates more precise on the other hand, improving the film application effect and ensuring a high yield rate.

[0031] The pressure-applying components allow for adjustment of the pressure exerted by the film-applying rollers on the display support backplate and support film, ensuring that the film-applying process meets production requirements. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of one embodiment of a roll-pressed display support backplate film application device.

[0033] Figure 2 This is a schematic diagram of the structure after the frame is removed in one embodiment of the roller-pressed display support backplate film application device.

[0034] Figure 3 This is a schematic diagram of the structure of a roller-pressed display support backplate film application device from another angle after the frame has been removed, according to one embodiment.

[0035] Figure 4 This is a schematic diagram illustrating the connection relationship between the drive device and the support roller in one embodiment of a roll-pressed display support backplate film application device.

[0036] Figure 5 for Figure 4 Cross-sectional view of the structure at point AA.

[0037] Figure 6 An exploded view of the structure of the support roller and the first air duct in one embodiment of the roller-pressed display support back panel film application device.

[0038] Figure 7 This is an unfolded diagram showing the distribution of the adsorption ports on the support roller in one embodiment of a roller-pressed display support backplate film application device.

[0039] Figure 8 A schematic diagram of the pneumatic lifting assembly in one embodiment of a roll-fed display support backplate film application device.

[0040] Figure 9 This is a partial structural schematic diagram of the pneumatic lifting assembly in one embodiment of a roll-fed display support backplate film application device.

[0041] Figure 10 This is a schematic diagram of the pneumatic lifting assembly in different states in one embodiment of a roll-fed display support backplate film application device.

[0042] Figure 11 This is a schematic diagram of the pressure application component in one embodiment of a roll-pressed display support backplate film application device.

[0043] Figure 12 An exploded view of a partial structure of the pressure application component in one embodiment of a roll-formed display support backplate film application device.

[0044] In the diagram: 1. Frame; 2. Unwinding device; 3. Side plate; 301. First chute; 4. Drive device; 5. First gear; 6. Second gear; 7. Support roller; 701. Suction port; 8. First air duct; 801. First slotted hole; 9. Guide tube; 10. Negative pressure generating device; 11. Slider; 12. First electric telescopic rod; 13. Connecting plate; 14. Second air duct; 1401. Second slotted hole; 15. 16. Sector gear; 17. Rack plate; 18. Horizontal groove; 19. First convex shaft; 10. Guide wheel; 11. Guide plate; 12. Inclined groove; 13. Bracket; 14. Second sliding groove; 25. Second electric telescopic rod; 26. First sliding connector; 27. Second convex shaft; 28. Second sliding connector; 29. ​​Vertical groove; 20. Vertical shaft; 21. Columnar spring; 22. Film applicator roller. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] Please see Figures 1-12 In this embodiment of the invention, a roller-type display support back panel film application device includes: a frame 1, three sets of support rollers 7, a first air duct 8, a pneumatic lifting assembly, and a pressure application assembly.

[0048] The frame 1 is equipped with an unwinding device 2 and two sets of side plates 3. The unwinding device 2 can actively release the support film at the same speed as the support roller 7 pulls the display support back plate, so as to avoid the support film being stretched and deformed due to the active movement of the display support back plate pulling the support film.

[0049] The three sets of support rollers 7 are arranged between the two sets of side plates 3. The inside of the support rollers 7 is a hollow structure, and multiple sets of adsorption ports 701 are circumferentially and evenly distributed along the length of the support rollers 7.

[0050] In this application, the three sets of support rollers 7 are arranged in an isosceles triangle. When the display support back plate with the corresponding curvature is placed on the three sets of support rollers 7, the display support back plate can come into contact with the three sets of support rollers 7 (the display support back plate and the three sets of support rollers 7 are in a tangent state), thereby supporting the display support back plate under the action of the three sets of support rollers 7.

[0051] Please see Figures 4-7 The first air guide 8 is connected to the two sets of side plates 3. A second air guide 14 is provided on each side of the first air guide 8. The second air guide 14 can change the direction of air entering the support roller 7.

[0052] The three sets of support rollers 7 are respectively rotatably fitted around the outside of the first air guide duct 8 and the second air guide duct 14. The first air guide duct 8 and the second air guide duct 14 are respectively provided with a first strip hole 801 and a second strip hole 1401 along their length direction. The conduction width of the first strip hole 801 and the second strip hole 1401 is the same as the diameter of the adsorption port 701. This avoids setting the first strip hole 801 and the second strip hole 1401 too large, which would cause multiple sets of adsorption ports 701 along the circumferential direction of the support roller 7 to be simultaneously open, resulting in pressure loss and insufficient adsorption force of the support roller 7 on the display support back plate. The specific reason is that when the display support back plate is tangent to the support roller 7, the farther away from the tangency point, the larger the gap between the support roller 7 and the display support back plate. At this time, if multiple sets of adsorption ports 701 along the circumferential direction of the support roller 7 are simultaneously open, the negative pressure generated can be released by the adsorption ports 701 that are farther away from the tangency point.

[0053] It should be noted that the adsorption port 701 is arranged along the length direction of the support roller 7, and a strip adsorption line is formed on the support roller 7 along the axial direction of the support roller 7. There are multiple sets of such strip adsorption lines in the circumferential direction of the support roller 7, and the adsorption ports 701 on adjacent sets of strip adsorption lines are staggered, and there is a half-overlapping area in the axial direction of the support roller 7 (see...). Figure 7 Based on this setting, when the display support backplate is placed on the support roller 7, when the display support backplate is tangent to the center of one set of suction ports 701 and the support roller 7 rotates, the other set of suction ports 701 can move toward the point of tangency, while the original suction port 701 will move closer to the point of tangency. During this process, the two sets of suction ports 701 can alternately and continuously produce a suction effect on the display support backplate, which can maintain the stability of the display support backplate being suctioned to a certain extent.

[0054] It should also be noted that the opening of the first strip-shaped hole 801 on the first air guide duct 8 is in a vertically upward position (see...). Figure 5The second strip hole 1401 on the second air duct 14 on both sides is in an inclined state. Specifically, both the first strip hole 801 and the second strip hole 1401 are oriented towards the tangent point between the support roller 7 and the display support back plate. When the corresponding suction port 701 rotates, it can conduct with the first strip hole 801 or the second strip hole 1401 at the tangent point, generating negative pressure and adsorbing the display support back plate. This produces a stable adsorption effect on the display support back plate and prevents the display support back plate from undergoing slight deformation under force during the film application process, which could lead to air bubbles or voids between the display support back plate and the support film after film application.

[0055] The side plate 3 is provided with a first sliding groove 301, and a slider 11 is slidably installed in the first sliding groove 301. The slider 11 is rotatably connected to the second air duct 14.

[0056] The side plate 3 is also provided with a negative pressure generating device 10. The negative pressure generating device 10 is connected to the first air duct 8 and the second air duct 14 through the conduit 9. An electronic control valve is provided at the connection between the conduit 9 and the two sets of second air ducts 14. The electronic control valve is used to control the connection status between the two sets of second air ducts 14 and the negative pressure generating device 10.

[0057] In this embodiment, the support roller 7 rotatably fitted with the first air guide duct 8 is located in the middle, and the support roller 7 rotatably fitted with the second air guide duct 14 is located on both sides. Under the action of the pneumatic lifting component, the second air guide duct 14 can drive the support roller 7 connected to it to change in height. At this time, the isosceles triangle shape formed by the three sets of support rollers 7 will change. According to the principle of finding a circle from three points, the three sets of support rollers 7 can support the display support back panel with the corresponding curvature. That is, by changing the height of the second air guide duct 14, the three sets of support rollers 7 can support display support back panels with different curvatures. Thus, the device can be used to support the mainstream curved screen display support back panels on the market. Compared with the existing support components with a predetermined radius to support the display support back panel, firstly, it is not necessary to develop support components with a corresponding predetermined radius. Secondly, by changing the position of the second air guide duct 14, the position of the three sets of support rollers 7 can be quickly adjusted to match the display support back panel with the corresponding curvature, shortening the debugging cycle when applying film to display support back panels with different curvatures and simplifying the debugging steps.

[0058] Please see Figures 2-4 A drive device 4 is fixedly installed on the side plate 3, and a first gear 5 is connected to the output shaft of the drive device 4;

[0059] A second gear 6 is fixedly installed on the shaft of the support roller 7 that is rotatably fitted with the first air guide pipe 8, and the first gear 5 meshes with the second gear 6;

[0060] Preferably, the aforementioned drive device 4, first gear 5, and second gear 6 can also be mounted on the slider 11 and connected to the support roller 7 rotatably fitted on the second air duct 14, so that under the drive of the drive device 4, all three sets of support rollers 7 can rotate actively to synchronously drive the support rollers 7 to rotate, thereby improving the stability of the movement of the display support back panel.

[0061] In this embodiment, in the initial state, one end of the display support back panel is placed on the support roller 7 that is rotatably fitted on the first air duct 8, and the display support back panel overlaps the support roller 7 fitted on one of the second air ducts 14. That is, in this state, there are two sets of support rollers 7 tangent to the display support back panel to support it. Then, one end of the support film is aligned with one end of the display support back panel. Subsequently, the pressure application component moves toward the display support back panel and works with the support roller 7 to press the support film and the display support back panel together. Finally, the drive device 4 works and controls the rotation of the support roller 7 through the first gear 5 and the second gear 6. At this time, the display support back panel moves in a circle around its center. At the same time, the support roller 7 and the pressure application component act on the display support back panel and the support film along the length direction of the display support back panel, thereby achieving the bonding of the display support back panel and the support film.

[0062] Because of the negative pressure between the support roller 7 and the display support backplate, the interaction force between the two is greater when the support roller 7 rotates and drives the display support backplate to move. This allows the support roller 7 to stably drive the display support backplate to move, preventing relative sliding between the support roller 7 and the display support backplate. This ensures that the release speed of the support film matches the movement speed of the display support backplate, and to a certain extent avoids the support film from being released too much and making premature contact with the display support backplate, which would cause wrinkles in the support film during subsequent rolling.

[0063] Please see Figure 2 , Figure 3 , Figures 8-10 The pneumatic lifting assembly is disposed between the two sets of side plates 3, and the pneumatic lifting assembly can drive the second air duct 14 to perform lifting and deflection actions;

[0064] The pneumatic lifting assembly includes a connecting plate 13 that connects to the slider 11 and a first electric telescopic rod 12 that is fixedly installed on the side plate 3. The actuating end of the first electric telescopic rod 12 is fixedly connected to the connecting plate 13.

[0065] The pneumatic lifting assembly also includes a sector gear 15 fixedly connected to the rotating shaft of the second air guide duct 14. The sector gear 15 meshes with a rack plate 16 disposed on the slider 11. Specifically, the rack plate 16 is provided with a transverse groove 1601 along its length direction, and the guide wheel 17 rotatably mounted on the slider 11 can roll in the transverse groove 1601.

[0066] The pneumatic lifting assembly also includes a traction structure for pulling the rack plate 16 to drive the second air duct 14 to rotate.

[0067] The traction structure includes a guide plate 18 fixedly installed on the side plate 3 and a first convex shaft 1602 fixedly connected to the rack plate 16. The guide plate 18 is provided with an inclined groove 1801, and the first convex shaft 1602 can slide in the inclined groove 1801.

[0068] In this embodiment, firstly, by controlling the action of the first electric telescopic rod 12, the slider 11 can be driven to slide in the first slide groove 301, thereby changing the height of the two sets of second air guide pipes 14 and changing the relative position of the three sets of support rollers 7, so that the three sets of support rollers 7 can provide support for the display support back plate with a predetermined curvature.

[0069] In use, for monitor support backplates with different curvatures, since the height of the first air duct 8 is constant, if the height of the second air duct 14 is changed so that the side support roller 7 is tangent to the monitor support backplate, the tangency point between the side support roller 7 and the monitor support backplate will change. If the orientation of the second strip hole 1401 on the second air duct 14 is set to fixed, when supporting monitor support backplates of different diameters, the change in the tangency point between the monitor support backplate and the support roller 7 will cause the side support roller 7 to lose its adsorption and support effect on the monitor support backplate. However, in the application, in order to match monitor support backplates with larger curvatures, two sets of second... The air duct 14 will move upward, and at the same time the first convex shaft 1602 will move upward along the length direction of the inclined groove 1801. At this time, the rack plate 16 will move laterally toward the guide plate 18, and under the meshing action of the rack plate 16 and the sector gear 15, it will drive the second air duct 14 to rotate, thereby changing the orientation of the second strip hole 1401, so that the second strip hole 1401 can move toward the point where the support roller 7 is tangent to the display support back plate. This ensures that the side support roller 7 can produce an adsorption effect on the display support back plate when supporting display support back plates of different diameters, and also provides driving force for the movement of the display support back plate when the side support roller 7 is actively rotating.

[0070] Please see Figures 2-3 , Figures 11-12The pressure-applying assembly is mounted on the side plate 3, and the pressure-applying assembly is provided with a film-applying roller 25 that rolls in cooperation with the support roller 7, including:

[0071] A bracket 19 is fixedly connected to the side plate 3, and the bracket 19 is provided with a second electric telescopic rod 20 and a second sliding groove 1901;

[0072] A first sliding connector 21 and a second sliding connector 22 are slidably connected to the second slide groove 1901. The first sliding connector 21 is rotatably connected to the film-applying roller 25, and the second sliding connector 22 is connected to the second electric telescopic rod 20.

[0073] An elastic structure and a stop structure connect the first sliding connector 21 and the second sliding connector 22. The elastic structure and the stop structure cooperate to control the movement of the film-applying roller 25 towards or away from the support roller 7. The elastic structure includes a vertical shaft 23 disposed in the second slide groove 1901 and slidably connected to the first sliding connector 21 and the second sliding connector 22. A columnar spring 24 is sleeved on the vertical shaft 23. One end of the columnar spring 24 is connected to the first sliding connector 21 and the other end is connected to the second sliding connector 22.

[0074] The stop structure includes a vertical groove 2201 provided on the second sliding connector 22 and a second convex shaft 2101 fixedly installed on the first sliding connector 21. The second convex shaft 2101 can slide within the vertical groove 2201.

[0075] In this embodiment, in the initial state, the cylindrical spring 24 is in a compressed state, and the second convex shaft 2101 is at the end of the vertical groove 2201 away from the second electric telescopic rod 20. In this state, the relative position between the first sliding connector 21 and the second sliding connector 22 is constant, so that when the second electric telescopic rod 20 is activated, the film-applying roller 25 can be stably driven to move.

[0076] When the second electric telescopic rod 20 drives the film-applying roller 25 toward the display support backplate and the support film, when the film-applying roller 25 acts on the display support backplate and the support film, the second electric telescopic rod 20 can further drive the second sliding connector 22 to move, thereby changing the relative position between the first sliding connector 21 and the second sliding connector 22. During this process, the column spring 24 can be further compressed, and the second convex shaft 2101 can slide in the vertical groove 2201. As the column spring 24 is further compressed, the elastic force it generates can act in the opposite direction on the display support backplate and the support film, thereby using the elastic force of the column spring 24 to press the display support backplate and the support film together.

[0077] Furthermore, depending on the required pressing force, controlling the actual extension and retraction of the second electric telescopic rod 20 can compress the cylindrical spring 24 to different degrees. At this time, the cylindrical spring 24 can cause the film-applying roller 25 to exert different pressures on the display support backplate and support mold to meet production requirements.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0079] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A roll-pressed display support backplate film application device, characterized in that, The utility model relates to a kind of roll-press display support backboard film pasting devices, including: Rack, which is provided with unwinding device and two groups of side plates; Three groups of supporting rollers are rotatably arranged between the two groups of side plates, the inside of the supporting rollers is hollow structure, and a plurality of adsorption ports distributed along the length direction of the supporting rollers are circumferentially and equidistantly arranged on the supporting rollers; First air duct, connected with the two groups of side plates, a group of second air ducts is arranged on both sides of the first air duct, and the second air duct can change the direction of air entering the supporting rollers; Pneumatic lifting assembly is arranged between the two groups of side plates, and the pneumatic lifting assembly can drive the second air duct to perform lifting and deflection actions; Pressure applying assembly is installed on the side plate, and the pressure applying assembly is provided with a film pressing roller in rolling cooperation with the supporting roller; The supporting roller is rotatably sleeved on the outside of the first air duct and the second air duct, and the first air duct and the second air duct are respectively provided with a first slot and a second slot along the length direction thereof; The guide width of the first slot and the second slot is the same as the diameter of the adsorption port; The side plate is provided with a first sliding groove, a sliding block is slidingly installed in the first sliding groove, and the sliding block is rotatably connected with the second air duct; The pneumatic lifting assembly includes a connecting plate connected with the sliding block and a first electric telescopic rod fixedly installed on the side plate, and the action end of the first electric telescopic rod is fixedly connected with the connecting plate; The pneumatic lifting assembly further includes a sector gear fixedly connected with the rotating shaft of the second air duct, and the sector gear is engaged with a rack plate arranged on the sliding block; The pneumatic lifting assembly further includes a pulling structure for pulling the rack plate to move to drive the second air duct to rotate; The pulling structure includes a guide plate fixedly installed on the side plate and a first convex shaft fixedly connected with the rack plate, and the guide plate is provided with an inclined groove, and the first convex shaft can slide in the inclined groove.

2. The roll-press display support backboard film pasting device according to claim 1, wherein The side plate is further provided with a negative pressure generating device, and the negative pressure generating device is connected with the first air duct and the second air duct through a conduit.

3. The roll-on display support backplate sticker application device of claim 1, wherein, A driving device is fixedly installed on the side plate, and a first gear is connected with the output shaft of the driving device; A second gear is fixedly installed on the rotating shaft of the supporting roller rotatably sleeved with the first air duct, and the first gear is engaged with the second gear.

4. The roll-on display support backplane sticker application device of claim 1, wherein, The pressure applying assembly includes: A bracket fixedly connected with the side plate, the bracket is provided with a second electric telescopic rod and a second sliding groove; A first sliding connector and a second sliding connector are slidingly connected with the second sliding groove, the first sliding connector is rotatably connected with the film pressing roller, and the second sliding connector is connected with the second electric telescopic rod; An elastic structure and a stop structure connecting the first sliding connector and the second sliding connector cooperate to control the movement of the film pressing roller towards or away from the supporting roller.

5. The roll-on display support backplane sticker application device of claim 4, wherein, The elastic structure comprises a vertical shaft arranged in the second sliding groove and in sliding connection with the first sliding connecting piece and the second sliding connecting piece, a cylindrical spring is sleeved on the vertical shaft, one end of the cylindrical spring is connected with the first sliding connecting piece, and the other end of the cylindrical spring is connected with the second sliding connecting piece.

6. The roll-on display support backplane sticker application device of claim 5, wherein, The stop structure comprises a vertical groove arranged on the second sliding connecting piece and a second convex shaft fixedly installed on the first sliding connecting piece, and the second convex shaft can slide in the vertical groove.

Images