High-precision film pasting device for Mini LED screen

Abstract

The invention relates to the technical field of LED screen processing, in particular to a high-precision film pasting device for Mini LED screens, which comprises a supporting cross beam and a movable frame transversely and movably arranged on the supporting cross beam, the movable frame is provided with a first control mechanism for controlling the movable frame to transversely move on the supporting cross beam, and the top of the movable frame is provided with a material conveying plate. The material conveying plate is provided with a material carrying module used for supporting the Mini LED screens to be subjected to film pasting, and the material carrying module can support the Mini LED screens of different sizes. The material conveying plate is transversely and movably arranged at the top of the movable frame, the moving direction of the material conveying plate is perpendicular to the moving direction of the movable frame, and the movable frame is further provided with a fine adjustment mechanism used for controlling transverse movement of the material conveying plate so as to adjust the position of the material conveying plate. The fine adjustment mechanism is operated to control the material conveying plate to transversely move left and right on the movable frame, the left-right position of the Mini LED screen is finely adjusted, the Mini LED screen can be accurately aligned with the protective film and the rolling mechanism above, and the film pasting quality is further improved.

Description

Technical Field

[0001] The present invention relates to the field of LED screen processing technology, and in particular to a high-precision film-laminating device for a Mini LED screen. Background Art

[0002] In the production and processing of Mini LED screens, the film laminating process is a key step in ensuring the surface quality and reliability of the screen. However, existing Mini LED screen laminating equipment generally has two core technical bottlenecks:

[0003] First, insufficient film application precision affects product yield. Traditional film application equipment often uses fixed carriers and extensive positioning structures, making it difficult to adapt to the diverse sizes of Mini LED screens. For example, when dealing with screens of varying lengths and widths, the film application position will shift after the screen is transported to the designated location, making it impossible to align the protective film. Furthermore, existing equipment lacks a multi-dimensional fine-tuning mechanism and can only achieve alignment through mechanical movement in a single direction. This is unable to accurately compensate for screen position deviations, easily causing errors in the alignment of the protective film with the screen edge, leading to problems such as edge glue overflow and residual bubbles.

[0004] Second, the low level of automation limits production efficiency. In existing film lamination processes, the unwinding, pulling, and laminating processes of the protective film often rely on independent mechanical units. This results in inefficient connections between each link, severely impacting the lamination process when large quantities of Mini LED screens need to be laminarized. Furthermore, the lamination process may even be disrupted if a single link is out of sync, failing to meet the requirements of a high-speed automated production line.

[0005] Therefore, a high-precision film-laminating device for Mini LED screens is now provided to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-precision film-laminating device for Mini LED screens to address the shortcomings of the existing technology, so as to solve the technical problems of low film-laminating accuracy and inability to achieve fully automatic film-laminating in existing Mini LED screen film-laminating equipment.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] A high-precision film laminating device for Mini LED screens includes a supporting beam and a movable frame laterally movable on the supporting beam. The movable frame is equipped with a first control mechanism for controlling its lateral movement on the supporting beam. A material transport plate is installed on the top of the movable frame. The material transport plate is provided with a loading module for supporting the Mini LED screen to be film-laminated. The loading module can support Mini LED screens of different sizes.

[0009] It also includes an unwinding mechanism for unwinding the protective film; the supporting crossbeam is equipped with a first supporting stand and a second supporting stand, and a lifting stand that can move up and down is provided on the top of the first supporting stand; the lifting stand is equipped with a supporting plate, and a suction module for sucking the protective film is installed at the bottom of the supporting plate; the second supporting stand is equipped with a first film clamping module for clamping the side edge of the head end of the protective film, and the first film clamping module is provided with a pair and is symmetrically arranged based on the unwinding trajectory of the protective film; the first supporting stand is equipped with a film pulling mechanism for clamping the head end of the protective film and then pulling the protective film to the bottom of the suction module, and a laser cutting module for laser cutting the protective film is provided between the first film clamping module and the suction module; the support plate is also equipped with a rolling mechanism for rolling the protective film to fit it to the surface of the Mini LED screen;

[0010] The transport plate is arranged on the top of the movable frame for transverse movement, and the movement direction of the transport plate is perpendicular to the movement direction of the movable frame. The movable frame is also equipped with a fine-tuning mechanism for controlling the transverse movement of the transport plate to adjust the position of the transport plate.

[0011] The beneficial effects of the present invention are as follows: when in use, the Mini LED screen to be laminated is placed on the loading module, and the first control mechanism is operated to control the movable frame to move horizontally from front to back on the supporting beam, thereby realizing the horizontal transportation of the Mini LED screen. The LED screen is transported to the bottom of the adsorption module; at this time, the film pulling mechanism is operated, and after the film pulling mechanism clamps the head end of the protective film, the first film clamping modules on both sides release the side edges of the head end of the protective film, and then the film pulling mechanism continues to operate to perform the film pulling process, thereby pulling the protective film to the bottom of the adsorption module. During the film pulling process, the unwinding mechanism automatically unwinds and continuously releases a long strip of protective film; when the film pulling mechanism pulls out the protective film of the specified size, the first film clamping modules on both sides are operated and clamp the side edges of the protective film again, and the adsorption module is controlled to operate to absorb the protective film placed directly below it, and then the laser cutting module is operated to perform laser cutting on the protective film, cutting the long strip of protective film into segments. At this time, the side edges of the head end of the protective film are still clamped by the first film clamping modules on both sides, and the adsorption module absorbs the cut section of protective film; the lifting frame is controlled to move downward to drive the protective film to move downward until the protective film contacts the surface of the Mini LED screen, and then the rolling mechanism is operated to roll the protective film so that the protective film contacts the surface of the Mini LED screen. The surface of the LED screen is bonded, and the above operations are repeated to realize the automated film bonding process for the Mini LED screen.

[0012] Roller-pressing the film effectively eliminates bubbles beneath the film, improving both the efficiency and quality of the application. Furthermore, the loading module can accommodate Mini LEDs of varying sizes. The transport plate transports the Mini LED screen to be laminated directly beneath the adsorption module. Upon detecting any deviation in the Mini LED screen's position, the system controls the forward and backward movement of the movable frame to fine-tune the front-to-back position of the Mini LED screen. The fine-tuning mechanism also controls the left and right lateral movement of the transport plate on the movable frame to fine-tune the left and right position of the Mini LED screen. This allows the Mini LED screen to be precisely aligned with the protective film and roller-pressing mechanism above, enabling precise lamination based on the size of the Mini LED, further improving the quality of the application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure from another perspective of the present invention.

[0015] Figure 3 It is a structural schematic diagram of the adjustment mechanism of the present invention.

[0016] Figure 4 It is a structural schematic diagram of the first distance adjustment module, the first drive assembly and the telescopic transmission assembly of the present invention.

[0017] Figure 5 It is a structural schematic diagram of the fine-tuning mechanism and the second drive assembly of the present invention.

[0018] Figure 6 It is a structural schematic diagram of the unwinding mechanism and the second driving mechanism of the present invention.

[0019] Figure 7 It is a structural schematic diagram of the rolling mechanism of the present invention.

[0020] Figure 8 This is a structural schematic diagram of the rolling mechanism of the present invention from another perspective.

[0021] Figure 9 It is a structural schematic diagram of the first film clamping module, laser cutting module and smoothing mechanism of the present invention.

[0022] Figure 10 It is a structural schematic diagram of the smoothing mechanism and the film pulling mechanism of the present invention.

[0023] Reference numerals include:

[0024] 1. Support beam; 101. First support frame; 102. Second support frame; 2. Movable frame; 201. Slide; 3. First control mechanism; 31. First servo motor; 32. First gear; 33. First rack; 4. Material transport plate; 41. Roller module; 5. Fine-tuning mechanism; 51. Left fixing member; 52. Right fixing member; 53. Second servo motor; 54. Third servo motor; 55. Left cam; 56. Right cam; 57. Anti-slip roller; 6. Loading module; 61. Loading block A; 62. Loading block B

[0025] 7. Adjustment mechanism; 71. Left movable seat; 711. First adjustment slot; 712. Second adjustment slot; 72. Right movable seat; 73. First pitch adjustment module; 731. Positive and negative threaded screws; 732. First bevel gear; 733. Second bevel gear; 74. Second pitch adjustment module; 75. First drive assembly; 751. First protective housing; 752. First dual-axis motor; 76. Telescopic transmission assembly; 761. Spline shaft; 762. Bushing; 77. Second drive assembly; 771. Second protective housing; 772. Second dual-axis motor; 773. First threaded screw;

[0026] 8. Lifting frame; 9. First drive mechanism; 91. Fourth servo motor; 92. Second screw; 10. Rotating frame; 11. Support plate; 12. Adsorption module; 121. First vacuum suction plate; 122. Second vacuum suction plate; 13. Rolling mechanism; 131. First mounting member; 132. Silicone pressure roller; 133. First connecting frame; 134. First control assembly; 1341. Fixed frame; 1342. Transverse rod; 1343. First electric push rod; 1344. Third screw; 1345. Fifth servo motor; 135. Sliding rod; 136. Buffer spring; 137. Second mounting member; 138. Heating pressure roller; 139. Second connecting frame; 1310. Second control assembly;

[0027] 14. Second driving mechanism; 141. Rotating part; 142. Sixth servo motor; 143. Gear ring; 144. Second gear; 15. Unwinding mechanism; 151. Support rod; 152. Placement groove; 153. Loading roller; 154. Rotating shaft; 155. Guide roller; 16. First film clamping module; 161. Clamping cylinder; 162. Clamping block; 163. Cushion; 164. Fixed plate; 17. Film pulling mechanism; 171. Support guide rail; 172. Sliding seat; 173. Second film clamping module; 174. Second control mechanism; 18. Laser cutting module; 181. Fixed rod; 182. Linear drive module; 183. UV laser; 19. Smoothing mechanism; 191. Sliding frame; 192. Film smoothing wheel; 193. Second electric push rod; 20. Mini LED screen; 21. Protective film. DETAILED DESCRIPTION

[0028] The following is a detailed description of a high-precision film-laminating device for a Mini LED screen according to the present invention with reference to the accompanying drawings.

[0029] like Figure 1-2 As shown, an embodiment of a high-precision film-sticking device for a Mini LED screen of the present invention includes a supporting beam 1 and a movable frame 2 that is laterally movable on the supporting beam 1. The movable frame 2 is equipped with a first control mechanism 3 for controlling its lateral movement on the supporting beam 1. A material transport plate 4 is installed on the top of the movable frame 2. The material transport plate 4 is provided with a loading module 6 for supporting the Mini LED screen 20 to be film-sticked. After the Mini LED screen 20 to be film-sticked is placed on the loading module 6, the first control mechanism 3 is operated to control the movable frame 2 to move laterally from front to back on the supporting beam 1, thereby realizing the lateral transportation of the Mini LED screen 20 and transporting the Mini LED screen 20 to be film-sticked to a designated position for subsequent film-sticking processing. In addition, a pair of supporting beams 1 are provided and arranged in parallel. This arrangement is to make the Mini LED screen 20 more stable when being transported.

[0030] A vertically arranged first support frame 101 is mounted beside the support beam 1. Both support beams 1 are provided with a first support frame 101. A vertically movable lift frame 8 and a plurality of first drive mechanisms 9 for driving the lift frames 8 are mounted on top of the first support frame 101. The first drive mechanisms 9 include a fourth servo motor 91 with a downwardly disposed output shaft (or an upwardly disposed output shaft). The output shaft of the fourth servo motor 91 is equipped with a second, vertically disposed lead screw 92, which is threadedly connected to the lift frame 8. The fourth servo motor 91 is operated to rotate the second lead screw 92, which, in conjunction with the threaded engagement of the second lead screw 92 with the lift frame 8, drives the lift frame 8 up and down on the first support frame 101. The supporting beam 1 is provided with a reeling mechanism 15 placed directly above the moving track of the movable frame 2. The reeling mechanism 15 is used to reel the protective film 21. The lifting frame 8 is equipped with a support plate 11. The bottom of the support plate 11 is equipped with an adsorption module 12 for sucking the protective film 21. The reeling mechanism 15 can continuously release a long strip of protective film 21, and the length direction of the protective film 21 is parallel to the moving track of the movable frame 2. After being released for a while, it will be sucked by the adsorption module 12. The support beam 1 is also equipped with a second support stand 102, which is equipped with a first film clamping module 16 for clamping the side edges of the head end of the protective film 21. A pair of first film clamping modules 16 are provided and are symmetrically arranged based on the unwinding trajectory of the protective film 21. The protective film 21 released by the unwinding mechanism 15 passes between the first film clamping modules 16 on both sides. After the head end of the released protective film 21 is placed between the first film clamping modules 16 on both sides, the first film clamping modules 16 on both sides operate simultaneously to clamp the side edges of the head end of the protective film 21. In addition, a film pulling mechanism 17 is installed on the first support stand 101 for clamping the head end of the protective film 21 and then pulling the protective film 21 to directly below the suction module 12. A laser cutting module 18 is provided between the first film clamping module 16 and the suction module 12 for laser cutting the protective film 21.

[0031] After the film-pulling mechanism 17 clamps the head end of the protective film 21, the first film-clamping modules 16 on both sides release the side edges of the head end of the protective film 21, and then the film-pulling mechanism 17 continues to operate to perform the film-pulling process, thereby pulling the protective film 21 to the bottom of the adsorption module 12. During the film-pulling process, the unwinding mechanism 15 automatically unwinds; after the film-pulling mechanism 17 pulls out the protective film 21 of the specified size, the first film-clamping modules 16 on both sides operate at the same time to clamp the side edges of the protective film 21. At the same time, the adsorption module 12 operates to absorb the protective film 21 placed directly below it, and then the laser cutting module 18 operates to perform laser cutting on the protective film 21, cutting the long strip of protective film 21 into segments. At this time, the side edges of the head end of the protective film 21 are still clamped by the first film-clamping modules 16 on both sides, and the adsorption module 12 absorbs the cut section of the protective film 21; the transport plate 4 will After the LED screen 20 is transported to the bottom of the adsorption module 12, the lifting frame 8 is controlled to move downward to drive the protective film 21 to move downward until the protective film 21 contacts the surface of the Mini LED screen 20, so as to facilitate the subsequent roller lamination process and stick the protective film 21 on the surface of the Mini LED screen 20 to realize the automated lamination process.

[0032] Each first film clamping module 16 is provided with a smoothing mechanism 19 for smoothing the head end of the protective film 21; after the laser cutting module 18 performs laser cutting on the protective film 21, although the first film clamping module 16 clamps the side edge of the head end of the protective film 21, the front edge of the head end of the protective film 21 will bend downward due to its own gravity, thereby causing the head end of the protective film 21 to be unable to align with the film pulling mechanism 17. Therefore, before the film pulling mechanism 17 clamps the head end of the protective film 21, the smoothing mechanism 19 is first operated to smooth the head end of the protective film 21, so that the film pulling mechanism 17 can accurately clamp the head end of the protective film 21, thereby avoiding the situation where the film sticking device cannot operate normally due to the inability of the film pulling mechanism 17 to clamp the head end of the protective film 21.

[0033] In addition, for film lamination, the support plate 11 is also equipped with a rolling mechanism 13 for rolling the protective film 21 onto the surface of the Mini LED screen 20. When the lifting frame 8 moves downward, driving the protective film 21 to move until it contacts the surface of the Mini LED screen 20, the rolling mechanism 13 is operated to roll the protective film 21 to make it adhere to the surface of the Mini LED screen 20. This rolling lamination method can effectively eliminate bubbles under the film, improving the efficiency and quality of the film lamination. Moreover, this film lamination device can also be operated under vacuum, and with the help of vacuum, it can further eliminate tiny bubbles during the rolling lamination process, thereby further improving the quality of the film lamination.

[0034] In this embodiment, in order to improve the accuracy of film application, the transport plate 4 is arranged on the top of the movable frame 2 for horizontal movement, and the movement direction of the transport plate 4 is perpendicular to the movement direction of the movable frame 2. The movable frame 2 is also equipped with a fine-tuning mechanism 5 for controlling the horizontal movement of the transport plate 4 to adjust the position of the transport plate 4. The transport plate 4 transports the Mini LED screen 20 to be applied with film to the bottom of the adsorption module 12, and after detecting the deviation of the position of the Mini LED screen 20 through the visual detection mechanism (not shown in the figure), the movable frame 2 can be controlled to move forward and backward to fine-tune the front and back position of the Mini LED screen 20. The transport plate 4 can also be controlled to move horizontally left and right on the movable frame 2 to fine-tune the left and right position of the Mini LED screen 20, so that the Mini LED screen 20 can be accurately aligned with the protective film 21 and the rolling mechanism 13 above, thereby achieving precise film application.

[0035] In order to realize the film lamination process for Mini LED screens 20 of different sizes, the loading module 6 includes a left loading unit and a right loading unit arranged symmetrically on the left and right sides, and both the left loading unit and the right loading unit include an A loading block 61 and a B loading block 62 arranged symmetrically in front and back (such as Figure 3 As shown), an adjustment mechanism 7 is provided on the material transport plate 4, and the adjustment mechanism 7 is used to control the left material loading unit and the right material loading unit to move closer to or farther away from each other, and to control the A material loading block 61 and the B material loading block 62 in the left and right material loading units to move closer to or farther away from each other. By operating the adjustment mechanism 7, the left material loading unit and the right material loading unit can be controlled to move closer to or farther away from each other in the left and right directions to adapt to the width size of the Mini LED screen 20; the A material loading block 61 and the B material loading block 62 in the left material loading unit, as well as the A material loading block 61 and the B material loading block 62 in the right material loading unit can also be controlled to move closer to or farther away from each other in the front and back directions to adapt to the length size of the Mini LED screen 20; by adjusting the length distance and the width distance, the material transport plate 4 can be used to place Mini LED screens 20 of different sizes, and Mini LED screens 20 of different sizes can be film-laminated, thereby improving the practicality of the film-laminated device. In addition, the excess protective film 21 at the edge of the surface of the Mini LED screen 20 can be cut off by a subsequent mechanism, which will not be described in detail here.

[0036] like Figure 3-4As shown, the adjustment mechanism 7 includes a left movable seat 71 and a right movable seat 72 that are laterally slidably arranged on the top of the material transport plate 4. The left loading unit is arranged on the left movable seat 71, and the right loading unit is arranged on the right movable seat 72. A second drive assembly 77 is arranged at the bottom of the material transport plate 4 for controlling the left and right movable seats 71 and 72 to move closer to or farther away from each other. After the second drive assembly 77 is operated, the distance between the left and right loading units can be adjusted. A first distance adjustment module 73 is arranged inside the left movable seat 71 for controlling the A loading block 61 and the B loading block 62 in the left loading unit to move closer to or farther away from each other. A second distance adjustment module 74 is arranged inside the right movable seat 72 for controlling the A loading block 61 and the B loading block 62 in the right loading unit to move closer to or farther away from each other. A first drive assembly 75 is also installed on the top of the material transport plate 4. The first drive assembly 75 and the first distance adjustment module 73, as well as the first drive assembly 75 and the second distance adjustment module 74, are all connected to each other through a telescopic transmission assembly 76. By operating the first drive assembly 75, under the transmission action of the telescopic transmission assemblies 76 on both sides, the first distance adjustment module 73 and the second distance adjustment module 74 are driven to operate synchronously, thereby controlling the A loading block 61 and the B loading block 62 in the left loading unit to move closer to or away from each other, and simultaneously controlling the A loading block 61 and the B loading block 62 in the right loading unit to move closer to or away from each other. In addition, the telescopic transmission assembly 76 has a telescopic function. When controlling the left movable seat 71 and the right movable seat 72 to move closer to or away from each other, the first drive assembly 75 and the first distance adjustment module 73, as well as the first drive assembly 75 and the second distance adjustment module 74, remain in transmission connection. The specific telescopic and retractable methods are described in detail below.

[0037] The left movable seat 71 and the right movable seat 72 have the same structure, and the first distance adjusting module 73 and the second distance adjusting module 74 have the same structure and operate in the same manner, wherein the left movable seat 71 is formed with a first adjusting groove 711 and a second adjusting groove 712 arranged front to back, and the A loading block 61 and the B loading block 62 in the left loading unit are slidably set in the first adjusting groove 711 and the second adjusting groove 712 respectively, and the first distance adjusting module 73 includes a positive and negative screw rod 731, the positive threaded portion on the positive and negative screw rod 731 is placed in the first adjusting groove 711 and is threadedly connected to the A loading block 61 in the left loading unit, and the negative threaded portion on the positive and negative screw rod 731 is placed in the second adjusting groove 712 and is threadedly connected to the B loading block 62 in the left loading unit; by driving the positive and negative screw rod 731 to rotate, the A loading block 61 and the B loading block 62 are controlled to approach or move away from each other.

[0038] A first bevel gear 732 is provided in the middle of the forward and reverse screw rods 731. A second bevel gear 733 for meshing with the first bevel gear 732 is also rotatably provided on the left movable seat 71, and the axis of rotation of the second bevel gear 733 is consistent with the sliding direction of the left movable seat 71. The first drive assembly 75 includes a first protective shell 751 and a first dual-axis motor 752 installed inside the first protective shell 751. The telescopic transmission assembly 76 includes a spline shaft 761 rotatably provided on the left movable seat 71 and the axis of rotation of the second bevel gear 733 is consistent with the axis of rotation of the second bevel gear 733. The end of the spline shaft 761 near the left movable seat 71 is fixedly provided with the second bevel gear 733. The telescopic transmission assembly 76 also includes a sleeve 762 that is sleeved on the outside of the spline shaft 761 and slidably provided therewith. The end of the sleeve 762 is fixedly provided with the output shaft of the first dual-axis motor 752 near the left movable seat 71. By running the first dual-axis motor 752, the forward and reverse screw rods 731 can be driven to rotate under the transmission action of the sleeve 762 and the spline shaft 761, and the cooperation of the first bevel gear 732 and the second bevel gear 733; and, when the left movable seat 71 slides, the spline shaft 761 can slide in the sleeve 762. No matter which position the left movable seat 71 slides to, the spline shaft 761 and the sleeve 762 can still transmit power to the forward and reverse screw rods 731.

[0039] The first control mechanism 3 includes a first servo motor 31 mounted on the movable frame 2. The axis of the output shaft of the first servo motor 31 is arranged horizontally and perpendicular to the direction of movement of the movable frame 2. A first gear 32 is mounted on the output shaft of the first servo motor 31. A first rack 33, whose length is parallel to the direction of movement of the movable frame 2, is mounted on the support beam 1. The first gear 32 meshes with the first rack 33. By operating the first servo motor 31 to drive the first gear 32 to rotate, the first gear 32 and the first rack 33 cooperate to control the lateral movement of the movable frame 2 from front to back on the support beam 1.

[0040] like Figure 5 As shown, the second drive assembly 77 includes a second protective housing 771 disposed at the bottom of the left movable seat 71 and a second dual-axis motor 772 installed within the second protective housing 771. The output shafts on both sides of the second dual-axis motor 772 are each equipped with a first screw rod 773 whose axis is parallel to the sliding direction of the left movable seat 71 (or right movable seat 72). The left first screw rod 773 is threadedly connected to the left movable seat 71, and the right first screw rod 773 is threadedly connected to the right movable seat 72. When the second dual-axis motor 772 is running, the left and right movable seats 71 and 72 can be driven toward or away from each other.

[0041] In order to allow the transport plate 4 to slide horizontally on the movable frame 2, a slide groove 201 is formed in the movable frame 2. The length direction of the slide groove 201 is arranged horizontally and perpendicular to the movable direction of the movable frame 2. A roller module 41 is installed at the bottom of the transport plate 4, and the roller module 41 is arranged to slide horizontally in the slide groove 201. In addition, the fine-tuning mechanism 5 includes a left fixing member 51 and a right fixing member 52, which are arranged symmetrically at the bottom of the transport plate 4. The movable frame 2 is equipped with a second servo motor 53 and a third servo motor 54, which are arranged symmetrically with their output shafts facing upward. The output shaft of the second servo motor 53 is equipped with a left cam 55 that pushes the left fixing member 51 to the right after rotation. The output shaft of the third servo motor 54 is equipped with a right cam 56 that pushes the right fixing member 52 to the left after rotation. The side of the left fixing member 51 that contacts the left cam 55 and the side of the right fixing member 52 that contacts the right cam 56 are both provided with arc surfaces. The second servo motor 53 and the third servo motor 54 are controlled separately. When the transport plate 4 needs to be fine-tuned a certain distance to the left, the third servo motor 54 is controlled to operate, thereby driving the right cam 56 to rotate, thereby pushing the right fixing member 52 to the left a specified distance. Similarly, the second servo motor 53 drives the left cam 55 to rotate, thereby pushing the left fixing member 51 to the right a specified distance, thereby fine-tuning the left-right position of the Mini LED screen 20 to align it with the protective film 21 directly above. In addition, a number of anti-slip rollers 57 are provided on the curved surfaces of the left fixing member 51 and the right fixing member 52 to reduce friction. By reducing friction, the stability during fine-tuning is improved and the jamming is prevented.

[0042] like Figure 6-8 As shown, the unwinding mechanism 15 includes a pair of support rods 151 mounted on the support beam 1. Each support rod 151 has an inclined placement slot 152 formed at the top. It also includes a loading roller 153 for carrying the material roll. The loading roller 153 has a rotating shaft 154 at both ends that can be placed in the placement slot 152. During the film drawing process of the film drawing mechanism 17, the rotating shaft 154 on the loading roller 153 rotates within the placement slot 152. The support rods 151 are also provided with guide rollers 155 for guiding the protective film 21 during unwinding. By providing the guide rollers 155, the side edges of the protective film 21 are always aligned with the first film clamping modules 16 on both sides during unwinding.

[0043] The laser cutting module 18 includes a fixed rod 181 mounted on the second support frame 102. The fixed rod 181 is equipped with a linear drive module 182 arranged horizontally and with its length perpendicular to the unwinding path of the protective film 21. The execution end of the linear drive module 182 is equipped with a downward-facing ultraviolet laser 183 for cutting the protective film 21. The linear drive module 182 is an existing device, which may be a model TSY320. When the linear drive module 182 is in operation, it can move the ultraviolet laser 183 along the width direction of the protective film 21. The ultraviolet laser 183 is also an existing device, which may be a model Talon UV45. While moving, the laser emitted by the ultraviolet laser 183 cuts the protective film 21, thereby cutting the strip of protective film 21 into segments.

[0044] The adsorption module 12 includes a first vacuum suction plate 121 and a second vacuum suction plate 122 arranged side by side. After the protective film 21 is placed directly below the first vacuum suction plate 121 and the second vacuum suction plate 122 are used to vacuum the protective film 21 .

[0045] The rolling mechanism 13 includes a first mounting member 131, at the bottom of which a silicone pressure roller 132 for applying pressure to the protective film 21 and performing a first rolling on half of the protective film 21 is rotatably provided, a first connecting frame 133 placed above the support plate 11 is provided on the top of the first mounting member 131, and the support plate 11 is provided with a first control component 134 for controlling the up and down movement and left and right movement of the first connecting frame 133; and a second mounting member 137 is also included, at the bottom of which a heating pressure roller 138 for applying pressure to the protective film 21 and performing a second rolling on half of the protective film 21 is rotatably provided, a heating element being provided in the heating pressure roller 138 so that it can emit heat, a second connecting frame 133 placed above the support plate 11 is provided on the top of the second mounting member 137 9. The support plate 11 is equipped with a second control component 1310 for controlling the up and down and left and right movements of the second connecting frame 139; the silicone pressure roller 132 and the heating pressure roller 138 are arranged side by side and placed between the first vacuum suction plate 121 and the second vacuum suction plate 122, the silicone pressure roller 132 is placed on the left and the rolling direction is facing the right, and the heating pressure roller 138 is placed on the right and the rolling direction is facing the left; the rolling directions of the silicone pressure roller 132 and the heating pressure roller 138 are arranged to be cross-arranged so as to fully roll and fit the protective film 21, and prevent the middle position of the protective film 21 from not being rolled to, which would cause bubbles and wrinkles in the middle position; when the first vacuum suction plate 121 and the second vacuum suction plate 122 are in the adsorption state, the bottom surfaces of the two are lower than the silicone pressure roller 132 and the heating pressure roller 138.

[0046] In this embodiment, a rotating frame 10 is rotatably provided on the lifting frame 8, the axis of rotation of the rotating frame 10 is arranged vertically, the support plate 11 is fixedly provided on the rotating frame 10, and the lifting frame 8 is provided with a second driving mechanism 14 for driving the rotating frame 10 to rotate a specified angle. After the silicone pressure roller 132 performs the first rolling and laminating treatment on one half of the protective film 21 (for example, the right half of the protective film 21), the second driving mechanism 14 is operated to drive the rotating frame 10 to rotate 180 degrees, so as to drive the silicone pressure roller 132 and the heating pressure roller 138 to perform a reversing treatment, so that the silicone pressure roller 132 can easily perform the first rolling and laminating treatment on the other half of the protective film 21 (for example, the left half of the protective film 21); while the silicone pressure roller 132 performs the first rolling and laminating treatment on the other half of the protective film 21 (for example, the left half of the protective film 21), the heating pressure roller 138 can perform the second rolling and laminating treatment on the half of the protective film 21 that has undergone the first rolling and laminating treatment. The heating pressure roller 138 can emit heat, and can activate the fluidity of the glue layer in the protective film 21 during the second rolling, thereby enhancing the laminating effect, removing tiny bubbles, and achieving complete lamination between the protective film 21 and the Mini LED screen 20. By subjecting the protective film 21 to a cyclic process of "cold rolling of the left half + hot rolling of the right half → rotation reversal → hot rolling of the left half + cold rolling of the right half", efficient bonding of the protective film 21 is achieved after multiple rolling processes.

[0047] Specifically, when the lifting frame 8 moves downward and drives the protective film 21 to move to contact the surface of the Mini LED screen 20, the adsorption module 12 stops adsorption and controls the lifting frame 8 to move upward for a certain distance. First, the first control component 134 is operated to control the first connecting frame 133 to move downward first, so that the silicone pressure roller 132 contacts the protective film 21 and applies a certain pressure to it. Then, the first connecting frame 133 is controlled to move horizontally to the right. During the movement, the first mounting member 131 passes under the heating pressure roller 138, and the silicone pressure roller 132 rolls on one half of the side of the protective film 21 to roll one half of the protective film 21 to contact the Mini LED screen 20. The surface of the LED screen 20 is bonded to achieve the first rolling process; after controlling the support plate 11 to rotate for reversing, the above action is repeated in the opposite direction to perform the first rolling and bonding process on the other half of the protective film 21. At the same time, the second control component 1310 first controls the second connecting frame 139 to move upward, so that the heating pressure roller 138 contacts the half of the protective film 21 that has undergone the first rolling and bonding process and applies a certain pressure to it, and then controls the second connecting frame 139 to move horizontally toward the right direction, and the heating pressure roller 138 can perform the second rolling and bonding process on the half of the protective film 21.

[0048] In addition, a slide bar 135 with a vertical axis can be provided at the top of each of the first mounting member 131 and the top of the second mounting member 137. The slide bar 135 at the top of the first mounting member 131 can be slid up and down on the first connecting frame 133, while the slide bar 135 at the top of the second mounting member 137 can be slid up and down on the second connecting frame 139. A buffer spring 136 for applying a downward thrust is wound around the slide bar 135 at the top of the first mounting member 131 and the slide bar 135 at the top of the second mounting member 137. When the silicone pressure roller 132 or the heating pressure roller 138 contacts the protective film 21, the buffer spring 136 absorbs the instantaneous impact force through compression deformation, preventing excessive pressure due to rigid contact that could damage the protective film 21 or the surface of the Mini LED screen 20. The pressure applied by the pressure roller can be adaptively adjusted through the spring elasticity based on the material thickness, surface flatness, and other characteristics of the protective film 21 to ensure a smooth and uniform rolling process.

[0049] The first control component 134 and the second control component 1310 have the same structure and operate in the same manner, wherein the first control component 134 includes a fixed frame 1341 set on the support plate 11 and a transverse rod 1342 set on the fixed frame 1341 for transverse sliding. The transverse rod 1342 can slide left and right, and the first connecting frame 133 is set on the transverse rod 1342 for sliding up and down, and the transverse rod 1342 is equipped with a first electric push rod 1343 (model can be JTA-02) with a plurality of telescopic rods arranged downward, and the telescopic rod end of the first electric push rod 1343 is fixed to the first connecting frame 133; by operating the first electric push rod 1343, the silicone pressure roller 132 can be controlled to move downward, so that the silicone pressure roller 132 contacts the protective film 21 and applies a certain pressure to it. A third screw rod 1344 is rotatably mounted on the mounting bracket 1341, its axis aligned with the sliding direction of the transverse rod 1342. The third screw rod 1344 is threadedly connected to the transverse rod 1342. The mounting bracket 1341 is also equipped with a fifth servo motor 1345, the output shaft of which is fixed to one end of the third screw rod 1344. Operation of the fifth servo motor 1345 controls the transverse rod 1342 to slide horizontally on the mounting bracket 1341, thereby rolling and laminating the protective film 21 with the silicone pressure roller 132.

[0050] like Figure 6As shown, the second drive mechanism 14 includes a rotating member 141 mounted on the top of the rotating frame 10. Rotating member 141 is rotatably mounted on the lifting frame 8, with the axis of rotation of rotating member 141 arranged vertically. A coaxially mounted gear ring 143 is mounted on the circumference of rotating member 141. The lifting frame 8 is equipped with a sixth servo motor 142, and the output shaft of the sixth servo motor 142 is mounted with a second gear 144 that meshes with the gear ring 143. When the direction of the silicone pressure roller 132 and the heating pressure roller 138 needs to be reversed, the sixth servo motor 142 is operated, and the second gear 144 and gear ring 143 drive the rotating frame 10 and the support plate 11 to rotate 180 degrees.

[0051] like Figure 9-10 As shown, the first film clamping module 16 includes a fixed plate 164 mounted on the second support frame 102. The fixed plate 164 is equipped with a clamping cylinder 161 with the clamping end facing the unwinding track. The two clamping jaws of the clamping cylinder 161 are arranged vertically, and each clamping jaw is equipped with a clamping block 162 for clamping the side edge of the head end of the protective film 21. The side of the clamping block 162 that contacts the protective film 21 is provided with a soft pad 163. By operating the clamping cylinder 161, the upper and lower clamping blocks 162 can be controlled to move closer or farther from each other, thereby clamping or loosening the side edge of the head end of the protective film 21.

[0052] The film-pulling mechanism 17 includes a support rail 171 mounted on the first support stand 101. The length of the support rail 171 aligns with the unwinding trajectory of the protective film 21. A sliding seat 172 is laterally slidably mounted on the support rail 171. The sliding seat 172 is equipped with a second film-clamping module 173 for clamping the leading end of the protective film 21. The film-pulling mechanism 17 also includes a second control mechanism 174 for controlling the lateral sliding of the sliding seat 172 on the support rail 171. The second film-clamping module 173 has the same structure and operates in the same manner as the first film-clamping module 16. The first film-clamping module 16 is used to clamp the side edges of the leading end of the protective film 21, while the second film-clamping module 173 is used to clamp the front edge of the leading end of the protective film 21. The second control mechanism 174 has the same structure and operates in the same manner as the first control mechanism 3. When it is necessary to pull the film, the second control mechanism 174 controls the sliding seat 172 to move toward the direction close to the head end of the protective film 21. After moving to the specified position, the second film clamping module 173 is operated to clamp the head end of the protective film 21. Then the first film clamping modules 16 on both sides loosen the side edges of the head end of the protective film 21, and then control the sliding seat 172 to move in the opposite direction to pull the protective film 21 to the bottom of the adsorption module 12. During the film pulling process, the unwinding mechanism 15 automatically unwinds to realize automatic film pulling processing.

[0053] The smoothing mechanism 19 includes a sliding frame 191 that slides laterally on a fixed plate 164. The sliding direction of the sliding frame 191 is parallel to the unwinding path of the protective film 21. The sliding frame 191 is rotatably provided with a film-smoothing wheel 192. A pair of film-smoothing wheels 192 are provided and are respectively placed on the upper and lower sides of the protective film 21. The fixed plate 164 is also equipped with a second electric push rod 193 (model JTA-02) for pushing the sliding frame 191 to slide laterally. Before the film-stretching mechanism 17 starts stretching the film, it first operates the second electric push rod 193 to push the sliding frame 191 to slide laterally. As it slides, the film-smoothing wheels 192 arranged above and below smooth the leading end of the protective film 21, so that the subsequent second film clamping module 173 can accurately clamp the leading end of the protective film 21.

[0054] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance its performance unprecedented in the past and become a product with great practical value.

[0055] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A high-precision film-laminating device for Mini LED screens, characterized by: The invention comprises a supporting crossbeam (1) and a movable frame (2) arranged on the supporting crossbeam (1) for transverse movement, the movable frame (2) being provided with a first control mechanism (3) for controlling its transverse movement on the supporting crossbeam (1), a material transport plate (4) being provided on the top of the movable frame (2), the material transport plate (4) being provided with a loading module (6) for supporting a Mini LED screen (20) to be laminated, and the loading module (6) being capable of supporting Mini LED screens (20) of different sizes; The invention also includes an unwinding mechanism (15) for unwinding the protective film (21); the supporting crossbeam (1) is equipped with a first supporting stand (101) and a second supporting stand (102); the top of the first supporting stand (101) is provided with a lifting stand (8) that can move up and down; the lifting stand (8) is equipped with a supporting plate (11); the bottom of the supporting plate (11) is equipped with an adsorption module (12) for adsorbing the protective film (21); the second supporting stand (102) is equipped with a first film clamping module for clamping the side edge of the head end of the protective film (21) (16), the first film clamping module (16) is provided with a pair of symmetrically arranged based on the unwinding trajectory of the protective film (21); the first support stand (101) is provided with a film pulling mechanism (17) for clamping the head end of the protective film (21) and pulling the protective film (21) to the bottom of the adsorption module (12); a laser cutting module (18) for laser cutting the protective film (21) is provided between the first film clamping module (16) and the adsorption module (12); the support plate (11) is also provided with a rolling mechanism (13) for rolling the protective film (21) onto the surface of the Mini LED screen (20); The material transport plate (4) is arranged on the top of the movable frame (2) for transverse movement, and the movement direction of the material transport plate (4) is perpendicular to the movement direction of the movable frame (2). The movable frame (2) is also equipped with a fine adjustment mechanism (5) for controlling the transverse movement of the material transport plate (4) to adjust the position of the material transport plate (4).

2. The high-precision film-laminating device for a Mini LED screen according to claim 1, characterized in that: The loading module (6) includes a left loading unit and a right loading unit that are arranged symmetrically on the left and right sides. Both the left loading unit and the right loading unit include an A loading block (61) and a B loading block (62) that are arranged symmetrically on the front and back sides. An adjusting mechanism (7) is provided on the material transport plate (4). The adjusting mechanism (7) is used to control the left loading unit and the right loading unit to move closer to or farther away from each other, and to control the A loading block (61) and the B loading block (62) in the left and right loading units to move closer to or farther away from each other.

3. The high-precision film-laminating device for a Mini LED screen according to claim 2, characterized in that: The regulating mechanism (7) comprises a left movable seat (71) and a right movable seat (72) which are arranged on the top of the material transport plate (4) for transverse sliding. The left loading unit is arranged on the left movable seat (71), and the right loading unit is arranged on the right movable seat (72). A second driving assembly (77) for controlling the left movable seat (71) and the right movable seat (72) to move closer to or farther from each other is arranged at the bottom of the material transport plate (4); a second driving assembly (77) for controlling the A loading block (61) and the B loading block (62) in the left loading unit is arranged inside the left movable seat (71). The right movable seat (72) is provided with a first distance-adjusting module (73) for controlling the A loading block (61) and the B loading block (62) in the right loading unit to move closer to or farther away from each other; a second distance-adjusting module (74) is provided inside the right movable seat (72) for controlling the A loading block (61) and the B loading block (62) in the right loading unit to move closer to or farther away from each other; a first driving assembly (75) is also provided on the top of the material transport plate (4); the first driving assembly (75) and the first distance-adjusting module (73), as well as the first driving assembly (75) and the second distance-adjusting module (74) are all connected in transmission via a telescopic transmission assembly (76).

4. The high-precision film-laminating device for a Mini LED screen according to claim 3, characterized in that: The left movable seat (71) is formed with a first adjusting groove (711) and a second adjusting groove (712) arranged front and back, and the A loading block (61) and the B loading block (62) in the left loading unit are respectively slidably arranged in the first adjusting groove (711) and the second adjusting groove (712), and the first distance adjustment module (73) includes a positive and negative threaded rod (731), and the positive threaded portion on the positive and negative threaded rod (731) is placed in the first adjusting groove (711) and is in contact with the A loading block (61) in the left loading unit. The reverse threaded portion of the forward and reverse threaded rod (731) is placed in the second adjustment groove (712) and is threadedly connected to the B loading block (62) in the left loading unit; a first bevel gear (732) is provided at the middle position of the forward and reverse threaded rod (731), and a second bevel gear (733) for engaging with the first bevel gear (732) is also rotatably provided on the left movable seat (71), and the axis of rotation of the second bevel gear (733) is consistent with the sliding direction of the left movable seat (71).

5. The high-precision film-laminating device for a Mini LED screen according to claim 4, characterized in that: The first drive assembly (75) includes a first protective shell (751) and a first double-axis motor (752) installed inside the first protective shell (751). The telescopic transmission assembly (76) includes a spline shaft (761) rotatably arranged on the left movable seat (71) and having an axis consistent with the axis of rotation of the second bevel gear (733). The end of the spline shaft (761) close to the left movable seat (71) is fixedly arranged with the second bevel gear (733). The telescopic transmission assembly (76) also includes a shaft sleeve (762) sleeved on the outside of the spline shaft (761) and slidably arranged with the spline shaft. The end of the shaft sleeve (762) is fixedly arranged with the output shaft of the first double-axis motor (752) close to the left movable seat (71).

6. The high-precision film-laminating device for a Mini LED screen according to claim 1, characterized in that: The fine adjustment mechanism (5) comprises a left fixing member (51) and a right fixing member (52) which are arranged at the bottom of the material transport plate (4) and are arranged symmetrically on the left and right sides. The movable frame (2) is equipped with a second servo motor (53) and a third servo motor (54) which are arranged symmetrically on the left and right sides and whose output shafts are arranged upwards. A left cam (55) which is rotated to push the left fixing member (51) to move rightward is equipped on the output shaft of the second servo motor (53). A right cam (56) which is rotated to push the right fixing member (52) to move leftward is equipped on the output shaft of the third servo motor (54). A side of the left fixing member (51) in contact with the left cam (55) and a side of the right fixing member (52) in contact with the right cam (56) are both provided with arc surfaces. A plurality of anti-slip rollers (57) for reducing friction are both provided on the arc surfaces of the left fixing member (51) and the right fixing member (52).

7. The high-precision film-laminating device for a Mini LED screen according to claim 1, characterized in that: The rolling mechanism (13) includes a first mounting member (131), a silicone pressure roller (132) for applying pressure to the protective film (21) and performing a first rolling on half of the protective film (21) is rotatably provided at the bottom of the first mounting member (131), a first connecting frame (133) is provided on the top of the first mounting member (131) and is placed above the support plate (11), and the support plate (11) is equipped with a first control component (133) for controlling the up-down and left-right movement of the first connecting frame (133). 4); also includes a second mounting member (137), the bottom of the second mounting member (137) is rotatably provided with a heating roller (138) for applying pressure to the protective film (21) and performing a second rolling on half of the protective film (21), the top of the second mounting member (137) is provided with a second connecting frame (139) placed above the support plate (11), and the support plate (11) is provided with a second control component (1310) for controlling the up-down and left-right movement of the second connecting frame (139); A rotating frame (10) is rotatably provided on the lifting frame (8), the axis of rotation of the rotating frame (10) is arranged vertically, the support plate (11) is fixedly provided on the rotating frame (10), and the lifting frame (8) is provided with a second driving mechanism (14) for driving the rotating frame (10) to rotate a specified angle.

8. The high-precision film-laminating device for a Mini LED screen according to claim 7, characterized in that: The adsorption module (12) comprises a first vacuum suction plate (121) and a second vacuum suction plate (122) arranged side by side; a silicone pressure roller (132) and a heating pressure roller (138) are arranged side by side and placed between the first vacuum suction plate (121) and the second vacuum suction plate (122), the silicone pressure roller (132) is placed on the left side and the rolling direction is toward the right side, and the heating pressure roller (138) is placed on the right side and the rolling direction is toward the left side.

9. The high-precision film-laminating device for a Mini LED screen according to claim 1, characterized in that: Each first film clamping module (16) is provided with a smoothing mechanism (19) for smoothing the head end of the protective film (21); the first film clamping module (16) includes a fixed plate (164) installed on the second support stand (102), the fixed plate (164) is provided with a clamping claw cylinder (161) with the clamping end facing the unwinding track, the two clamping claws of the clamping claw cylinder (161) are arranged up and down, and the two clamping claws are provided with a clamping block (162) for clamping the side edge of the head end of the protective film (21), the clamping block (162) and the protective film ( A soft pad (163) is provided on the side in contact with the protective film (21); the smoothing mechanism (19) includes a sliding frame (191) slidably arranged on the fixed plate (164), the sliding direction of the sliding frame (191) is parallel to the unwinding track of the protective film (21), the sliding frame (191) is rotatably provided with a film-smoothing wheel (192), and the film-smoothing wheel (192) is provided in a pair and is respectively placed on the upper and lower sides of the protective film (21), and the fixed plate (164) is also provided with a second electric push rod (193) for pushing the sliding frame (191) to slide horizontally.

10. The high-precision film-laminating device for a Mini LED screen according to claim 1, characterized in that: The film-pulling mechanism (17) includes a support rail (171) mounted on a first support stand (101), the length direction of the support rail (171) is consistent with the unwinding trajectory of the protective film (21), a sliding seat (172) is provided on the support rail (171) for transverse sliding, and the sliding seat (172) is provided with a second film clamping module (173) for clamping the head end of the protective film (21); the film-pulling mechanism (17) also includes a second control mechanism (174) for controlling the sliding seat (172) to slide transversely on the support rail (171).

Images