An automatic lamination system for large display touch screen

Abstract

The present invention discloses an automatic bonding system for a large display touch screen, which mainly includes a glass cover plate conveyor line, an optical adhesive film placement platform, a touch screen conveyor line, and an automatic bonding conveying mechanism. The automatic bonding conveying mechanism includes a mobile platform and a straight conveyor line capable of driving the mobile platform to move horizontally. The mobile platform is sequentially provided with a glass cover plate loading station, a glass cover plate film tearing station, a soft-to-hard bonding station, a protective film tearing station on the adhesive film, a hard-to-hard bonding station, and a touch screen loading station on the straight conveyor line. An automatic bonding system for a large display touch screen using the above technical solution can automatically complete four film tearing and two bonding processes without manual labor, greatly improving production efficiency and bonding alignment accuracy, while reducing the generation of bonding bubbles, reducing the risk of the screen being crushed, and improving the yield rate.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic assembly equipment for display touch screens, and in particular to an automatic laminating system for large display touch screens. Background Art

[0002] In order to obtain a more comprehensive interactive interface and rich display images, the design of current electronic products generally tends to be larger. As the specifications of display touch screens increase, the slight alignment error between the touch screen and the glass cover will greatly affect the product yield.

[0003] In the pre-lamination process of large display touch screens, it is necessary to tear off the glass cover protective film of the glass cover, the touch screen protective film of the touch screen, and the upper and lower protective films of the optical adhesive film, and then adhere the glass cover and touch screen to the two side surfaces of the optical adhesive film respectively. A total of four film tearing and two lamination processes are required, which is a cumbersome process.

[0004] At present, the pre-lamination process of large display touch screens is usually carried out manually. Since large display touch screens are generally heavy, workers are easily fatigued after working for a long time. The human factor has a great influence on the production process, resulting in low production efficiency, poor lamination alignment accuracy, and easy generation of bubbles and crushing of the screen during lamination. As a result, the pre-lamination process of large display touch screens not only has unsatisfactory production efficiency, but also always has unsatisfactory yield rate. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an automatic lamination system for a large display touch screen.

[0006] The technical solution is as follows:

[0007] An automatic bonding system for a large display touch screen comprises a glass cover plate conveyor line for feeding a glass cover plate, an optical adhesive film placement platform for placing an optical adhesive film, and a touch screen conveyor line for feeding a touch screen, wherein the upper and lower surfaces of the optical adhesive film are respectively adhered to an upper protective film and a lower protective film, the surface of the glass cover plate on the side adapted to the optical adhesive film is adhered to a glass cover plate protective film, and the surface of the touch screen on the side adapted to the optical adhesive film is adhered to a touch screen protective film, and further comprises an automatic bonding conveying mechanism, wherein the automatic bonding conveying mechanism comprises a mobile platform and a linear conveying line capable of driving the mobile platform to move horizontally, wherein the mobile platform is sequentially provided with a glass cover plate loading station, a glass cover plate film tearing station, a soft-to-hard bonding station, a film upper protective film tearing station, a hard-to-hard bonding station, and a touch screen loading station on the linear conveying line;

[0008] The glass cover plate conveyor line is arranged on one side of the glass cover plate feeding station, and a glass cover plate feeding mechanism is arranged across the glass cover plate conveyor line and the glass cover plate feeding station, a first film tearing mechanism is arranged across the glass cover plate film tearing station, a third film tearing mechanism is arranged across the protective film tearing station on the adhesive film, a second film tearing mechanism adjacent to the soft-to-hard bonding station is arranged between the first film tearing mechanism and the third film tearing mechanism, the optical adhesive film placing platform is arranged on the side of the second film tearing mechanism away from the soft-to-hard bonding station, a soft-to-hard bonding mechanism is arranged across the soft-to-hard bonding station, the second film tearing mechanism and the optical adhesive film placing platform, a hard-to-hard bonding mechanism is arranged across the hard-to-hard bonding station, and the touch screen conveyor line is arranged across above the touch screen loading station, the touch screen feeding mechanism is arranged on the touch screen conveyor line, and the fourth film tearing mechanism is arranged on the hard-to-hard bonding mechanism;

[0009] The glass cover plate loading mechanism is used to transfer the glass cover plates on the glass cover plate conveyor line to the mobile platform located at the glass cover plate loading station;

[0010] The first film-tearing mechanism is used to tear off the glass cover protective film of the glass cover located at the glass cover film-tearing station;

[0011] The soft-to-hard bonding mechanism is used to grab the optical adhesive film on the optical adhesive film placement platform, and then cooperate with the second film tearing mechanism to tear off the lower protective film of the optical adhesive film, so that the lower surface of the optical adhesive film is bonded to the side surface of the glass cover plate at the soft-to-hard bonding station where the glass cover plate protective film is torn off;

[0012] The third film tearing mechanism is used to tear off the upper protective film of the optical adhesive film located at the upper protective film tearing station;

[0013] The touch screen loading mechanism is used to transfer the touch screen on the touch screen conveyor line to the hard-to-hard laminating mechanism;

[0014] The fourth film-tearing mechanism is used to tear off the touch screen protective film of the touch screen loaded on the hard-to-hard laminating mechanism;

[0015] The hard-to-hard bonding mechanism is used to flip the touch screen over and then bond the surface of the touch screen with the touch screen protective film removed to the upper surface of the optical adhesive film located at the hard-to-hard bonding station.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] An automatic bonding system for large display touch screens that adopts the above technical solution can automatically complete four film tearing and two bonding processes without manual labor, greatly improving production efficiency and bonding alignment accuracy. At the same time, it can reduce the generation of bonding bubbles, reduce the risk of screen crushing, and improve the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the automatic bonding system;

[0019] Figure 2 This is a structural diagram of the glass cover feeding mechanism;

[0020] Figure 3 It is a structural diagram of the glass cover gripping assembly;

[0021] Figure 4 It is a structural diagram of the mobile platform;

[0022] Figure 5 is a cross-sectional view of the mobile platform;

[0023] Figure 6 This is a structural diagram of the soft-to-hard bonding module from one perspective;

[0024] Figure 7 This is a structural diagram of the soft-to-hard bonding module from another perspective;

[0025] Figure 8 is a schematic structural diagram of the membrane clamping assembly;

[0026] Figure 9 is a cross-sectional view of the membrane clamping assembly;

[0027] Figure 10 This is a schematic diagram of the coordination between the touch screen conveyor line and the touch screen feeding mechanism;

[0028] Figure 11 It is a structural diagram of a hard-to-hard bonding mechanism;

[0029] Figure 12 A cross-sectional view of a hard-to-hard bonding assembly;

[0030] Figure 13 Schematic diagram of the structure of optical adhesive film;

[0031] Figure 14 Schematic diagram of the structure of the glass cover;

[0032] Figure 15 A schematic diagram of the touch screen structure. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0034] like Figure 1 As shown, an automatic bonding system for a large display touch screen mainly includes a glass cover conveyor line 1, an optical adhesive film placement platform 2, a touch screen conveyor line 3 and an automatic bonding conveying mechanism.

[0035] The glass cover plate conveying line 1 is used to convey the glass cover plate 12 , the optical adhesive film placement platform 2 is used to place the optical adhesive film 13 , and the touch screen conveying line 3 is used to convey the touch screen 15 .

[0036] See Figure 13-15 The upper and lower surfaces of the optical film 13 are respectively affixed with an upper protective film 13a and a lower protective film 13b. The surface of the glass cover 12 that mates with the optical film 13 is affixed with the glass cover protective film 12a, and the surface of the touch screen 15 that mates with the optical film 13 is affixed with a touch screen protective film 15a. In this embodiment, both the upper protective film 13a and the lower protective film 13b protrude circumferentially from the optical film 13 to facilitate film removal. The outer edge of the glass cover protective film 12a is provided with a glass cover film easy-tear label 12a1, which serves as an adsorption clamping point for film removal. Similarly, the outer edge of the touch screen protective film 15a is provided with a touch screen film easy-tear label 15a1, which functions similarly to the glass cover film easy-tear label 12a1.

[0037] The automatic laminating and conveying mechanism includes a mobile platform 4 and a straight conveying line 5 that can drive the mobile platform 4 to move in the horizontal direction. The mobile platform 4 is provided with a glass cover loading station, a glass cover film tearing station, a soft-to-hard laminating station, a protective film tearing station on the film, a hard-to-hard laminating station and a touch screen loading station on the straight conveying line 5 in sequence.

[0038] See Figures 1-12 , the glass cover plate conveyor line 1 is set on one side of the glass cover plate feeding station, the glass cover plate feeding mechanism 6 is set across the glass cover plate conveyor line 1 and the glass cover plate feeding station, the first film tearing mechanism 7 is set across the glass cover plate tearing station, the third film tearing mechanism 10 is set across the protective film tearing station, the second film tearing mechanism 9 adjacent to the soft to hard bonding station is set between the first film tearing mechanism 7 and the third film tearing mechanism 10, the optical adhesive film is placed flat Platform 2 is arranged on the side of the second film tearing mechanism 9 away from the soft-to-hard laminating station, and a soft-to-hard laminating mechanism 8 is arranged across the soft-to-hard laminating station, the second film tearing mechanism 9 and the optical adhesive film placement platform 2, and a hard-to-hard laminating mechanism 11 is arranged across the hard-to-hard laminating station, the touch screen conveyor line 3 is arranged across the touch screen loading station, a touch screen loading mechanism 14 is arranged on the touch screen conveyor line 3, and a fourth film tearing mechanism 16 is arranged on the hard-to-hard laminating mechanism 11.

[0039] The lamination method of the automatic lamination system for large display touch screens is as follows:

[0040] S1. The glass cover plate conveying line 1 conveys the glass cover plate 12 to the designated position.

[0041] S2. The glass cover plate loading mechanism 6 transfers the glass cover plate 12 on the glass cover plate conveyor line 1 to the movable platform 4 located at the glass cover plate loading station.

[0042] S3 , the mobile platform 4 moves to the glass cover film tearing station, and the first film tearing mechanism 7 tears off the glass cover protective film 12 a of the glass cover 12 .

[0043] S4, the mobile platform 4 moves to the soft-to-hard bonding station, and at the same time, the soft-to-hard bonding mechanism 8 grabs the optical adhesive film 13 on the optical adhesive film placement platform 2. In the process of moving to the soft-to-hard bonding station, the optical adhesive film 13 first cooperates with the second film tearing mechanism 9 to tear off the lower protective film 13b of the optical adhesive film 13. After completion, the soft-to-hard bonding mechanism 8 makes the lower surface of the optical adhesive film 13 and the side surface of the glass cover plate 12 located at the soft-to-hard bonding station with the glass cover plate protective film 12a torn off fit together. After completion, the soft-to-hard bonding mechanism 8 releases the optical adhesive film 13, and the optical adhesive film 13 and the glass cover plate 12 are adhered. The mobile platform 4 transports the glass cover plate 12 and the optical adhesive film 13 together.

[0044] S5 , the mobile platform 4 moves to the film upper protective film tearing station, and the third film tearing mechanism 10 tears off the upper protective film 13 a of the optical adhesive film 13 located at the film upper protective film tearing station.

[0045] S6. The touch screen conveying line 3 conveys the touch screen 15 to its proper position.

[0046] S7 , the touch screen loading mechanism 14 transfers the touch screen 15 on the touch screen conveying line 3 to the hard-to-hard laminating mechanism 11 .

[0047] S8 , the fourth film-tearing mechanism 16 tears off the touch screen protective film 15 a of the touch screen 15 loaded on the hard-to-hard laminating mechanism 11 .

[0048] S9. The hard-to-hard bonding mechanism 11 first turns over the touch screen 15, and then bonds one side surface of the touch screen 15 with the touch screen protective film 15a removed to the upper surface of the optical adhesive film 13 located at the hard-to-hard bonding station, completing the adhesion of the optical adhesive film 13 and the touch screen 15, thereby combining the glass cover 12, the optical adhesive film 13 and the touch screen 15 into one.

[0049] See Figure 1-Figure 3The glass cover sheet loading mechanism 6 includes a first frame 6a disposed across the glass cover sheet conveyor line 1 and the glass cover sheet loading station, a glass cover sheet grabbing assembly 6b capable of sliding back and forth along the first frame 6a over the glass cover sheet conveyor line 1 and the glass cover sheet loading station, a first horizontal drive assembly 6c for driving the glass cover sheet grabbing assembly 6b to slide, and first and second positioning assemblies 6d and 6e disposed adjacent to the glass cover sheet loading station. The first horizontal drive assembly 6c can drive the glass cover sheet grabbing assembly 6b to slide back and forth over the glass cover sheet conveyor line 1 and the glass cover sheet loading station.

[0050] The first frame 6a includes two first crossbeams 6a1 disposed transversely above the glass cover sheet conveyor line 1 and the glass cover sheet loading station. Each first crossbeam 6a1 is slidably mounted with at least one first slider 6a2. In this embodiment, each first crossbeam 6a1 is equipped with two first sliders 6a2, thereby ensuring smooth operation of the glass cover sheet grabbing assembly 6b.

[0051] The glass cover plate grasping assembly 6b includes a first bracket 6b1, a first adsorption platform 6b2, a first screw 6b3, a first screw nut 6b4 and a first drive motor 6b5. The two sides of the first bracket 6b1 are fixedly connected to the corresponding first sliders 6a2 respectively. The first adsorption platform 6b2 is located below the first bracket 6b1 and can be raised and lowered along the first bracket 6b1 through at least two first lifting guide rods 6b6. The lower surface of the first adsorption platform 6b2 is arrayed with first negative pressure suction cups 6b9. By opening or closing each first negative pressure suction cup 6b9, the glass cover plate 12 can be adsorbed or released.

[0052] The lower end of the first lead screw 6b3 is connected to the first adsorption platform 6b2, and the upper end is rotatably mounted on the first bracket 6b1. The first lead screw nut 6b4 is rotatably mounted on the first bracket 6b1 and forms a lead screw nut kinematic pair with the first lead screw nut 6b4. A first driven gear 6b7 is mounted on the first lead screw nut 6b4 and rotates synchronously with it. A first drive motor 6b5 is mounted on the first bracket 6b1, and a first driving gear 6b8 is mounted on the motor shaft of the first drive motor 6b5 and rotates synchronously with it, meshing with the first driven gear 6b7. The motor shaft of the first drive motor 6b5 drives the first driving gear 6b8 to rotate synchronously, which in turn drives the first driven gear 6b7 to rotate. The first driven gear 6b7 drives the first lead screw nut 6b4 to rotate synchronously, and the first lead screw nut 6b4 drives the first lead screw 6b3 up and down, thereby precisely controlling the height of the first adsorption platform 6b2.

[0053] The first horizontal drive assembly 6c includes a second screw rod 6c1 rotatably mounted on the first frame 6a, a second screw rod nut 6c2 fixedly mounted on the first bracket 6b1, and a second drive motor 6c3 fixedly mounted on the first frame 6a. The second screw rod 6c1 is parallel to the two first beams 6a1. The motor shaft of the second drive motor 6c3 rotates synchronously with the second screw rod 6c1. The second screw rod nut 6c2 and the second screw rod 6c1 constitute a screw rod nut kinematic pair, thereby being able to accurately control the horizontal movement position of the first adsorption platform 6b2.

[0054] See Figure 1 、 Figure 4 and Figure 5 The linear conveyor line 5 includes at least two first linear guide rails 5a extending parallel to each other in the horizontal direction and an eighth electric linear module 5b parallel to the first linear guide rails 5a, which can accurately locate the position of the mobile platform 4.

[0055] The movable platform 4 includes a lower platform 4a and an upper platform 4b arranged above the lower platform 4a. The lower platform 4a is fixedly connected to the eighth electric linear module 5b and the slide of each first linear guide rail 5a. The upper platform 4b includes a platform base 4b1 and a second adsorption platform 4b2 that can be raised and lowered along the platform base 4b1. The platform base 4b1 is installed on the lower platform 4a through a number of vertically arranged support rods 4c. The upper surface of the second adsorption platform 4b2 is protruded to form a number of support bars 4b21 arranged side by side. The upper surface of each support bar 4b21 is flush, and first adsorption holes 4b22 are evenly distributed along the length direction. Pick-up grooves 4b23 are formed between adjacent support bars 4b21. The first positioning component 6d is located on the side of the glass cover plate loading station away from the glass cover plate film tearing station, and the second positioning component 6e is located on the side of the glass cover plate loading station away from the glass cover plate conveyor line 1.

[0056] The first positioning assembly 6d and the second positioning assembly 6e each include a first positioning assembly bracket and a first positioning cylinder mounted on the bracket. A first positioning bar is mounted on the outer end of the piston rod of each first positioning cylinder. Furthermore, a first limiting stop bar 4b3 is mounted on the upper surface of the second adsorption platform 4b2. The thickness of the first limiting stop bar 4b3 is less than that of the glass cover plate 12. Several upwardly extending positioning pins 4b4 are disposed around the periphery of the second adsorption platform 4b2. The coordination of the first positioning assembly 6d, the second positioning assembly 6e, and the first limiting stop bar 4b3 allows for precise positioning of the glass cover plate on the movable platform 4.

[0057] At least one first driving cylinder 4d is installed on the platform base 4b1 for driving the second adsorption platform 4b2 to move up and down.

[0058] The first and third film tearing operations are performed only when the second adsorption platform 4b2 is higher than the platform base 4b1. This design can avoid interference between the film clamping assembly 17 and the positioning pin 4b4 during the first and third film tearing operations.

[0059] When the second adsorption platform 4b2 is in the downward storage state, the bottom of each extraction groove 4b23 is flush with the upper surface of the platform base 4b1. The provision of the extraction groove 4b23 facilitates mechanical clamping of the mobile platform 4 and avoids damage to the glass cover 12 or touch screen 15 during clamping.

[0060] See Figure 1 The first film-tearing mechanism 7 includes a second gantry 7a disposed across the film-tearing station on the glass cover plate and a ninth electric linear module 7b disposed on the second gantry 7a. The ninth electric linear module 7b is disposed parallel to and below the crossbeam of the second gantry 7a. The third film-tearing mechanism 10 is the same as the first film-tearing mechanism 7. The third film-tearing mechanism 10 includes a third gantry 10a disposed across the protective film-tearing station on the adhesive film and a tenth electric linear module 10b disposed on the third gantry 10a. The tenth electric linear module 10b is disposed parallel to and below the crossbeam of the third gantry 10a. Through the above design, when the ninth electric linear module 7b and the tenth electric linear module 10b are started, the linear conveyor line 5 is also started, which can realize the tearing of the protective film in a direction with an angle of 30°-60°, making the protective film easier to tear off.

[0061] The second film-tearing mechanism 9 is located between the first and third film-tearing mechanisms 7 and 10. It includes a first electric linear module 9a, which is parallel to the linear conveyor line 5, and a first mounting post 9b, which is vertically mounted on the slide of the first electric linear module 9a. The extension direction of the first electric linear module 9a is perpendicular to the ninth electric linear module 7b and the tenth electric linear module 10b. Since the extension direction of the first electric linear module 9a is perpendicular to the extension direction of the fourth electric linear module 8b, the protective film can also be removed at an angle of 30°-60°, making it easier to remove the protective film.

[0062] The fourth film tearing mechanism 16 includes a second electric linear module 16a mounted horizontally on the hard-to-hard laminating mechanism 11, a third electric linear module 16b mounted horizontally on the slide of the second electric linear module 16a, and a second mounting post 16c mounted vertically on the slide of the third electric linear module 16b. The second electric linear module 16a is parallel to the linear conveyor line 5, and the third electric linear module 16b is perpendicular to the second electric linear module 16a. The transmission of the third electric linear module 16b adopts a gear rack combination, which can avoid interference with the hard-to-hard laminating mechanism and the touch screen feeding mechanism, and has stable and reliable working performance. Through the cooperation of the second electric linear module 16a and the third electric linear module 16b, it is also possible to tear off the protective film at an angle of 30°-60°, making the protective film easier to tear off.

[0063] See Figure 1 、 Figure 8 and Figure 9 A membrane clamping assembly 17 is installed on the slide of the ninth electric linear module 7b, the slide of the tenth electric linear module 10b, the first mounting column 9b and the second mounting column 16c.

[0064] Specifically, the membrane clamping assembly 17 includes an L-shaped clamping bracket 17a, an air suction head 17c installed on the bottom surface of the clamping bracket 17a through an air suction head bracket 17b, and an interference-free clamping module 17d installed on the side of the clamping bracket 17a. The interference-free clamping module 17d includes a first push-pull electromagnet 17d1 fixedly installed on the upper side of the clamping bracket 17a, and a module shell 17d2 that can be moved up and down on the lower side of the clamping bracket 17a. The push-pull rod of the first push-pull electromagnet 17d1 is connected to the module shell 17d2. A first return spring 17d3 is provided between the first push-pull electromagnet 17d1 and the module shell 17d2 for driving the module shell 17d2 away from the first push-pull electromagnet 17d1. A first wedge block 17d4 and a clamping and pressing member 17d5 are provided. The clamping and pressing member 17d5 includes a wedge block portion 17d51 and a pressing portion 17d52 that together form an L-shaped structure. The pressing portion 17d52 passes through the module shell 17d2 laterally. The end of the wedge block portion 17d51 away from the pressing portion 17d52 cooperates with the adjacent end face inclined surface of the first wedge block 17d4. A reset push block 17d6 parallel to the pressing portion 17d52 is provided in the module shell 17d2. One end of the reset push block 17d6 is supported on the wedge block portion 17d51, and the other end is slidably provided on the clamping bracket 17a. At least one second reset spring 17d7 is provided between the reset push block 17d6 and the clamping bracket 17a for driving the wedge block portion 17d51 away from the clamping bracket 17a.

[0065] When the first push-pull electromagnet 17d1 is energized, the pressing portion 17d52 protrudes outward to below the air suction head 17c and abuts against it. The air suction head 17c first grasps the protective film, which is then securely clamped by the pressing portion 17d52, ensuring stable film removal. When the first push-pull electromagnet 17d1 is de-energized, the pressing portion 17d52 separates from the air suction head 17c and retreats into the interior of the module housing 17d2, fully exposing the air suction head 17c. This ensures that the film clamping assembly 17 maintains a stable and reliable grip on the protective film while preventing interference between the pressing portion 17d52 and the corresponding suction platform.

[0066] See Figure 6 and Figure 7 The soft-to-hard bonding mechanism 8 includes a fourth gantry 8a which is arranged across the soft-to-hard bonding station and the optical adhesive film placement platform 2, a fourth electric linear module 8b which is arranged horizontally on the fourth gantry 8a, a fifth electric linear module 8c which is vertically installed on the slide of the fourth electric linear module 8b, and a soft-to-hard bonding module 8d which is installed at the lower end of the fifth electric linear module 8c. The fourth electric linear module 8b is arranged in parallel on the fourth gantry 8a. The soft-to-hard bonding module 8d includes a soft-to-hard bonding bracket 8d1 which is fixedly installed at the lower end of the fifth electric linear module 8c and a third adsorption platform 8d2 which is located below the soft-to-hard bonding bracket 8d1. The lower surface of the third adsorption platform 8d2 has an array of second adsorption holes 8d21, so that the optical adhesive film 13 can be reliably adsorbed.

[0067] Two rows of floating lift guide rods 8d3 are hingedly mounted on the upper surface of the third adsorption platform 8d2. The upper end of each floating lift guide rod 8d3 is inserted into the soft-to-hard bonding bracket 8d1 for vertical movement, and is then fitted with a third return compression spring 8d4 that drives the corresponding floating lift guide rod 8d3 upward. The lower surface of the soft-to-hard bonding bracket 8d1 is mounted with at least one sixth electric linear module 8d5, arranged side by side between the two rows of floating lift guide rods 8d3. The lower surface of the slide of each sixth electric linear module 8d5 is mounted with a plurality of downwardly protruding bonding drive rollers 8d6. When the slide of any sixth electric linear module 8d5 moves between the soft-to-hard bonding bracket 8d1 and the third adsorption platform 8d2, it can drive the corresponding position of the third adsorption platform 8d2 away from the soft-to-hard bonding bracket 8d1. This mechanism achieves reliable soft-to-hard bonding.

[0068] In this embodiment, there are three sixth electric linear modules 8d5. When the optical adhesive film 13 adsorbed by the third adsorption platform 8d2 approaches the glass cover 12 on the movable platform 4, the slides of the three sixth electric linear modules 8d5 first slide in the same direction from the outside into between the soft-to-hard bonding bracket 8d1 and the third adsorption platform 8d2, and are adjacent to the same side of the third adsorption platform 8d2. Then, the sixth electric linear module 8d5 located in the middle remains stopped, and the two sixth electric linear modules 8d5 located on the outside are started, so that the slides of the two sixth electric linear modules 8d5 are close to the other side opposite to the third adsorption platform 8d2. That is, the bonding drive roller 8d6 corresponding to the middle sixth electric linear module 8d5 always presses one edge, and the bonding drive rollers 8d6 corresponding to the other two sixth electric linear modules 8d5 gradually squeeze from both sides until they reach the other edge, so that the optical adhesive film 13 is gradually pressed on the glass cover plate 12 at a smaller angle. The existence of the angle effectively removes the air between the film and the glass cover plate, reduces the generation of bonding bubbles, and greatly improves the bonding quality.

[0069] In this embodiment, multiple rows of bonding drive rollers 8d6 are installed on the lower surface of the slide of each sixth electric linear module 8d5 to improve the uniformity and stability of the extrusion force, thereby further reducing the generation of bonding bubbles and improving the bonding quality.

[0070] See Figure 1 and Figure 10 The touch screen conveyor line 3 includes a conveyor line stand 3a that is arranged across the straight conveyor line 5 and is away from the glass cover plate loading station. A conveyor trough 3a1 parallel to the straight conveyor line 5 is provided on the top of the conveyor line stand 3a. Roller conveyor assemblies 3b are arranged side by side along the length direction of the conveyor trough 3a1. The roller conveyor assemblies 3b include roller drive shafts 3b1 driven by a rotating shaft drive device and conveying rollers 3b2 evenly distributed and fixed on the roller drive shafts 3b1. The conveying rollers 3b2 of each roller conveyor assembly 3b are aligned along the length direction of the conveyor trough 3a1.

[0071] The touch screen feeding mechanism 14 includes an electric rotating module 14a installed at one end of the conveying trough 3a1 near the glass cover plate loading station and a touch screen adsorption frame 14b that can rotate under the drive of the electric rotating module 14a. The electric rotating module 14a includes a rotating connecting member 14a1 rotatably installed at one end of the conveying trough 3a1 near the glass cover plate loading station and a first rotating drive motor 14a2 for driving the rotating connecting member 14a1 to rotate. The touch screen adsorption frame 14b includes a rotating connecting member 14a1 installed on the rotating connecting member 14a1 for synchronous rotation. The adsorption frame base 14b1 and several strip suction cup mounting parts 14b2 arranged side by side on one side of the adsorption frame base 14b1, each strip suction cup mounting part 14b2 is perpendicular to the adsorption frame base 14b1, and is evenly distributed along the length direction. The second negative pressure suction cup 14b3 is installed, and a strip adsorption frame support plate 3a2 is provided in the conveying trough 3a1. The strip adsorption frame support plate 3a2 is located between two adjacent roller conveying assemblies 3b and close to the hard-to-hard bonding station, which can position the rotation of the touch screen adsorption frame 14b.

[0072] When the touch screen adsorption frame 14b rotates to the conveying groove 3a1, each strip suction cup mounting portion 14b2 is supported on the strip adsorption frame support plate 3a2 and is respectively located between the corresponding two rows of roller drive shafts 3b1. At this time, each second negative pressure suction cup 14b3 is facing upward, and can reliably adsorb the touch screen 15. The height of each second negative pressure suction cup 14b3 is less than or equal to the height of each conveying roller 3b2, which can avoid interfering with the conveying of the touch screen 15.

[0073] See Figure 1 、 Figure 11 and Figure 12The hard-to-hard laminating mechanism 11 comprises two first gantries 11a positioned opposite each other on either side of a glass cover sheet loading station, a box-shaped mounting cavity 11b with an opening on one side positioned between the two first gantries 11a, and a hard-to-hard laminating assembly 11c mounted within the box-shaped mounting cavity 11b. A fourth film-tearing mechanism 16 is mounted on the crossbeam of one of the first gantries 11a. Each first gantries 11a is equipped with a liftable suspension 11e via a plurality of second linear guides 11d. A seventh electric linear module 11f is vertically mounted on one of the first gantries 11a, driving the corresponding suspension 11e up and down. The two sides of the box-shaped mounting cavity 11b are rotatably mounted on corresponding suspensions 11e via mounting cavity rotation shafts 11g. One of the suspensions 11e is equipped with a second rotary drive motor 11h, which drives the adjacent mounting cavity rotation shaft 11g. This allows for precise control of both the height and rotation of the hard-to-hard laminating assembly 11c. Among them, one installation cavity rotating shaft 11g connected to the second rotation drive motor 11h is a solid shaft, and the other installation cavity rotating shaft 11g is a hollow shaft, which is used to be installed in the installation of pneumatic and electric circuits. For details, please refer to Figure 11 and Figure 12 An O-ring 11b1 is installed on the upper edge of the opening of the box-shaped mounting cavity 11b. The box-shaped mounting cavity 11b is provided with a pneumatic circuit. The vacuum is drawn through the pneumatic circuit, which can greatly reduce the risk of bubbles generated when the touch screen 15 and the optical adhesive film 12 are bonded.

[0074] The hard-to-hard bonding assembly 11c includes an adsorption platform base 11c1 and a fourth adsorption platform 11c2 mounted on the adsorption platform base 11c1 via a cylindrical bracket 11c3. The fourth adsorption platform 11c2 has an array of third adsorption holes 11c21 on a surface away from the cylindrical bracket 11c3, which can reliably adsorb the touch screen 15.

[0075] One end of the cylindrical bracket 11c3 is fixedly connected to the fourth adsorption platform 11c2, and the other end is slidably installed in the adsorption platform base 11c1. The adsorption platform base 11c1 is provided with a movable circular hole 11c11 that is compatible with the cylindrical bracket 11c3. The diameter of the movable circular hole 11c11 is larger than the diameter of the cylindrical bracket 11c3. The adsorption platform base 11c1 is provided with a number of electromagnetic adsorption units 11i for locking or releasing the cylindrical bracket 11c3. The electromagnetic adsorption units 11i can fix the cylindrical bracket 11c3 when the fourth adsorption platform 11c2 is flipped.

[0076] A plurality of second push-pull electromagnets 11c4 are circumferentially arranged along the adsorption platform base 11c1, and a vertically arranged adsorption platform positioning plate 11c5 is fixedly installed on the push-pull rod of each second push-pull electromagnet 11c4. Each adsorption platform positioning plate 11c5 extends to the periphery of the fourth adsorption platform 11c2, and a fifth return compression spring 11c6 is provided between each adsorption platform positioning plate 11c5 and the corresponding second push-pull electromagnet 11c4 for driving the adsorption platform positioning plate 11c5 away from the fourth adsorption platform 11c2. By setting the alignment device, not only the error accumulation problem after alignment is avoided, but also the service life of the positioning block 11c9 and the positioning bolt 4b4 is improved, thereby ensuring that the alignment and fitting accuracy is stable and reliable. Specifically, when the actual position reached by the mobile platform 4 deviates slightly from the hard-to-hard bonding station, the gap between the cylindrical bracket 11c3 and the movable circular hole 11c11 serves as an offset, so that the positioning block 11c9 can automatically adjust its position to cooperate with the positioning bolt 4b4. If there is no offset setting, the mechanism will deform to cooperate with the positioning bolt 4b4 to insert into the positioning block 11c9, generating a deformation force to squeeze the contact surface between the positioning block 11c9 and the positioning bolt 4b4, aggravating wear and reducing the service life of the positioning block 11c9.

[0077] Regarding the positioning block 11c9 and the positioning bolt 4b4, specifically, the fourth adsorption platform 11c2 is surrounded by positioning blocks 11c9 that are respectively compatible with the corresponding positioning bolts 4b4, and each positioning bolt 4b4 can be inserted into the corresponding positioning block 11c9. A second limiting block 11c22 is installed on the surface of the fourth adsorption platform 11c2 away from the cylindrical bracket 11c3. The thickness of the second limiting block 11c22 is less than the thickness of the touch screen 15, which can ensure the precise alignment of the fourth adsorption platform 11c2 and the second adsorption platform 4b4.

[0078] Also, see Figure 1 and Figure 11 A third positioning assembly 18 and a fourth positioning assembly 19 similar to the first positioning assembly 6d and the second positioning assembly 6e are respectively provided on the conveyor line platform 3a and the first gantry 11a to cooperate with the second limit block to achieve precise positioning of the touch screen 15.

[0079] Opposite sides of the adsorption platform base 11c1 are vertically mounted on corresponding sidewalls of the box-shaped mounting cavity 11b via third linear guide rails 11c7 and linear motor modules 11c8. This allows precise control of the bonding process between the touch screen 15 and the optical adhesive film 12. The linear motor module 11c8 boasts a compact size (reducing the volume of the sealed cavity and shortening vacuuming time to improve production efficiency), high positioning accuracy (significantly reducing the risk of screen crushing), and smooth transmission.

[0080] Regarding the bonding process of the touch screen 15: first, after the touch screen conveyor line 3 conveys the touch screen 15 to its position (located on the touch screen adsorption frame 14b), each second negative pressure suction cup 14b3 adsorbs the touch screen 15, then the electric rotation module 14a is started, the touch screen adsorption frame 14b transfers the touch screen 15 to the fourth adsorption platform 11c2, each second negative pressure suction cup 14b3 releases the touch screen 15, and after the touch screen 15 is positioned, each third adsorption hole 11c21 adsorbs the touch screen 15, and then the touch screen protective film 15a is torn off, and then the second rotation drive motor 11h is started. The box-shaped mounting cavity 11b flips 180° downward, and then the seventh electric linear module 11f is started, causing the box-shaped mounting cavity 11b to descend until it is engaged with the movable platform 4. At this time, the O-ring 11b1 seals the gap between the box-shaped mounting cavity 11b and the movable platform 4, and the pneumatic circuit is started to vacuum the space formed by the box-shaped mounting cavity 11b and the movable platform 4. Finally, the linear motor module 11c8 is started, causing the touch screen 15 to adhere to the upper surface of the optical adhesive film 13, thereby combining the glass cover 12, the optical adhesive film 13 and the touch screen 15 into one.

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0082] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0083] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0084] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. An automatic bonding system for a large display touch screen, comprising a glass cover plate conveying line (1) for conveying a glass cover plate (12), an optical adhesive film placement platform (2) for placing an optical adhesive film (13), and a touch screen conveying line (3) for conveying a touch screen (15), wherein the upper and lower surfaces of the optical adhesive film (13) are respectively adhered with an upper protective film (13a) and a lower protective film (13b), the surface of the glass cover plate (12) that matches the optical adhesive film (13) is adhered with a glass cover plate protective film (12a), and the surface of the touch screen (15) that matches the optical adhesive film (13) is adhered with a touch screen protective film (15a), characterized in that: The automatic laminating and conveying mechanism includes a mobile platform (4) and a linear conveying line (5) capable of driving the mobile platform (4) to move in a horizontal direction, wherein the mobile platform (4) is provided with a glass cover plate loading station, a glass cover plate film tearing station, a soft-to-hard laminating station, a protective film tearing station on the adhesive film, a hard-to-hard laminating station, and a touch screen loading station in sequence on the linear conveying line (5); The glass cover plate conveying line (1) is arranged on one side of the glass cover plate feeding station, a glass cover plate feeding mechanism (6) is arranged across the glass cover plate conveying line (1) and the glass cover plate feeding station, a first film tearing mechanism (7) is arranged across the glass cover plate film tearing station, a third film tearing mechanism (10) is arranged across the protective film tearing station, a second film tearing mechanism (9) adjacent to the soft-to-hard bonding station is arranged between the first film tearing mechanism (7) and the third film tearing mechanism (10), the optical adhesive film placement platform ( 2) It is arranged on the side of the second film tearing mechanism (9) away from the soft-to-hard laminating station, a soft-to-hard laminating mechanism (8) is arranged across the soft-to-hard laminating station, the second film tearing mechanism (9) and the optical adhesive film placement platform (2), a hard-to-hard laminating mechanism (11) is arranged across the hard-to-hard laminating station, the touch screen conveying line (3) is arranged across the touch screen loading station, a touch screen loading mechanism (14) is arranged on the touch screen conveying line (3), and a fourth film tearing mechanism (16) is arranged on the hard-to-hard laminating mechanism (11); The glass cover plate loading mechanism (6) is used to transfer the glass cover plate (12) on the glass cover plate conveyor line (1) to the mobile platform (4) located at the glass cover plate loading station; The first film-tearing mechanism (7) is used to tear off the glass cover plate protective film (12a) of the glass cover plate (12) located at the glass cover plate film-tearing station; The soft-to-hard bonding mechanism (8) is used to grab the optical adhesive film (13) on the optical adhesive film placement platform (2), and then cooperate with the second film tearing mechanism (9) to tear off the lower protective film (13b) of the optical adhesive film (13), so that the lower surface of the optical adhesive film (13) is bonded to the side surface of the glass cover plate (12) located at the soft-to-hard bonding station, from which the glass cover plate protective film (12a) has been torn off; The third film tearing mechanism (10) is used to tear off the upper protective film (13a) of the optical adhesive film (13) located at the upper protective film tearing station; The touch screen loading mechanism (14) is used to transfer the touch screen (15) on the touch screen conveying line (3) to the hard-to-hard laminating mechanism (11); The fourth film-tearing mechanism (16) is used to tear off the touch screen protective film (15a) of the touch screen (15) loaded on the hard-to-hard laminating mechanism (11); The hard-to-hard bonding mechanism (11) is used to flip the touch screen (15) and then bond the side surface of the touch screen (15) with the touch screen protective film (15a) to the upper surface of the optical adhesive film (13) located at the hard-to-hard bonding station; The soft-to-hard bonding mechanism (8) comprises a fourth gantry (8a) arranged across the soft-to-hard bonding station and the optical adhesive film placement platform (2), a fourth electric linear module (8b) arranged horizontally on the fourth gantry (8a), a fifth electric linear module (8c) vertically mounted on the slide of the fourth electric linear module (8b), and a soft-to-hard bonding module (8d) mounted at the lower end of the fifth electric linear module (8c), wherein the fourth electric linear module (8b) is arranged in parallel on the fourth gantry (8a), and the soft-to-hard bonding module (8d) comprises a soft-to-hard bonding bracket (8d1) fixedly mounted at the lower end of the fifth electric linear module (8c), and a third adsorption platform ( 8d2), the lower surface of the third adsorption platform (8d2) has second adsorption holes (8d21) distributed in an array, the upper surface of the third adsorption platform (8d2) is hingedly mounted with two rows of floating lifting guide rods (8d3), the upper end of each floating lifting guide rod (8d3) is inserted into the soft-to-hard fitting bracket (8d1) so as to be movable up and down, and is mounted with a third return compression spring (8d4) for driving the corresponding floating lifting guide rod (8d3) to move upward, the lower surface of the soft-to-hard fitting bracket (8d1) is mounted with at least one sixth electric linear module (8d5) arranged side by side between the two rows of floating lifting guide rods (8d3), and the lower surface of the slide of each sixth electric linear module (8d5) is mounted with a plurality of downwardly protruding fitting drive rollers (8d6); When the slide of any sixth electric linear module (8d5) moves between the soft-to-hard bonding bracket (8d1) and the third adsorption platform (8d2), it can drive the corresponding position of the third adsorption platform (8d2) away from the soft-to-hard bonding bracket (8d1).

2. The automatic lamination system for a large display touch screen according to claim 1, characterized in that: The glass cover plate feeding mechanism (6) comprises a first frame (6a) arranged across the glass cover plate conveying line (1) and the glass cover plate feeding station, a glass cover plate grabbing assembly (6b) capable of sliding back and forth along the first frame (6a) above the glass cover plate conveying line (1) and the glass cover plate feeding station, a first horizontal driving assembly (6c) for driving the glass cover plate grabbing assembly (6b) to slide, and a first positioning assembly (6d) and a second positioning assembly (6e) arranged beside the glass cover plate feeding station; The first frame (6a) has two first crossbeams (6a1) arranged across the glass cover plate conveying line (1) and above the glass cover plate loading station, and at least one first sliding block (6a2) is slidably mounted on each first crossbeam (6a1); The glass cover gripping assembly (6b) comprises a first bracket (6b1), a first adsorption platform (6b2), a first screw (6b3), a first screw nut (6b4) and a first driving motor (6b5). Both sides of the first bracket (6b1) are fixedly connected to corresponding first sliders (6a2). The first adsorption platform (6b2) is located below the first bracket (6b1) and can be raised and lowered along the first bracket (6b1) via at least two first lifting guide rods (6b6). The lower surface of the first adsorption platform (6b2) is arrayed with first negative pressure suction cups (6b9). The first screw ( The lower end of the first adsorption platform (6b2) is connected to the first adsorption platform (6b3), and the upper end is rotatably installed on the first bracket (6b1). The first screw nut (6b4) is rotatably mounted on the first bracket (6b1) and forms a screw nut motion pair with the first screw nut (6b4). The first screw nut (6b4) is synchronously rotated with a first driven gear (6b7). The first drive motor (6b5) is mounted on the first bracket (6b1). The motor shaft of the first drive motor (6b5) is synchronously rotated with a first driving gear (6b8) meshing with the first driven gear (6b7).

3. The automatic lamination system for a large display touch screen according to claim 2, characterized in that: The linear conveying line (5) comprises at least two first linear guide rails (5a) extending in parallel with each other in a horizontal direction and an eighth electric linear module (5b) parallel to the first linear guide rails (5a); The mobile platform (4) includes a lower platform (4a) and an upper platform (4b) arranged above the lower platform (4a), the lower platform (4a) is fixedly connected to the eighth electric linear module (5b) and the slide of each first linear guide rail (5a), the upper platform (4b) includes a platform base (4b1) and a second adsorption platform (4b2) capable of rising and falling along the platform base (4b1), the platform base (4b1) is installed on the lower platform (4a) through a plurality of vertically arranged support rods (4c) 4a), the upper surface of the second adsorption platform (4b2) is protruded to form a plurality of support bars (4b21) arranged side by side, the upper surface of each support bar (4b21) is flush, and first adsorption holes (4b22) are evenly distributed along the length direction, and a pickup groove (4b23) is formed between adjacent support bars (4b21), and when the second adsorption platform (4b2) is in a downward storage state, the bottom of each pickup groove (4b23) is flush with the upper surface of the platform base (4b1); At least one first driving cylinder (4d) for driving the second adsorption platform (4b2) to move up and down is installed on the platform base (4b1); a first limit stop bar (4b3) is installed on the upper surface of the second adsorption platform (4b2); the thickness of the first limit stop bar (4b3) is less than the thickness of the glass cover plate (12); and a plurality of upwardly extending positioning bolts (4b4) are arranged around the second adsorption platform (4b2); The first horizontal drive assembly (6c) comprises a second screw rod (6c1) rotatably mounted on the first frame (6a), a second screw rod nut (6c2) fixedly mounted on the first bracket (6b1), and a second drive motor (6c3) fixedly mounted on the first frame (6a); the second screw rod (6c1) is parallel to the two first beams (6a1); the motor shaft of the second drive motor (6c3) rotates synchronously with the second screw rod (6c1); the second screw rod nut (6c2) and the second screw rod (6c1) form a screw rod nut kinematic pair; The first positioning component (6d) is located on a side of the glass cover plate loading station away from the glass cover plate film tearing station, and the second positioning component (6e) is located on a side of the glass cover plate loading station away from the glass cover plate conveying line (1). The first positioning component (6d), the second positioning component (6e) and the first limiting stop bar (4b3) cooperate to position the glass cover plate (12) transferred to the mobile platform (4) located at the glass cover plate loading station.

4. The automatic lamination system for a large display touch screen according to claim 3, characterized in that: The hard-to-hard bonding mechanism (11) comprises two first gantries (11a) arranged oppositely on both sides of a glass cover plate loading station, a box-shaped mounting cavity (11b) with an opening on one side and located between the two first gantries (11a), and a hard-to-hard bonding component (11c) installed in the box-shaped mounting cavity (11b); the fourth film tearing mechanism (16) is installed on a crossbeam of one of the first gantries (11a); and the first gantries (11a) are all connected by a plurality of second linear guide rails. (11d) is equipped with a liftable suspension (11e), a seventh electric linear module (11f) for driving the corresponding suspension (11e) to be lifted and lowered is vertically mounted on one of the first gantry (11a), both sides of the box-shaped installation cavity (11b) are rotatably mounted on the corresponding suspension (11e) via the installation cavity rotating shaft (11g), and a second rotation drive motor (11h) for driving the adjacent installation cavity rotating shaft (11g) to rotate is mounted on one of the suspensions (11e); The hard-to-hard bonding component (11c) comprises an adsorption platform base (11c1) and a fourth adsorption platform (11c2) mounted on the adsorption platform base (11c1) via a cylindrical bracket (11c3); a surface of the fourth adsorption platform (11c2) away from the cylindrical bracket (11c3) has an array of third adsorption holes (11c21); one end of the cylindrical bracket (11c3) is fixedly connected to the fourth adsorption platform (11c2), and the other end is slidably mounted in the adsorption platform base (11c1); a movable circular hole (11c11) adapted to the cylindrical bracket (11c3) is provided on the adsorption platform base (11c1); the diameter of the movable circular hole (11c11) is larger than the diameter of the cylindrical bracket (11c3); and a plurality of electromagnetic adsorption units (11i) for locking or releasing the cylindrical bracket (11c3) are mounted on the adsorption platform base (11c1); A plurality of second push-pull electromagnets (11c4) are arranged along the circumference of the adsorption platform base (11c1); a vertically arranged adsorption platform positioning plate (11c5) is fixedly installed on the push-pull rod of each second push-pull electromagnet (11c4); each adsorption platform positioning plate (11c5) extends to the periphery of the fourth adsorption platform (11c2); a fifth return compression spring (11c6) is arranged between each adsorption platform positioning plate (11c5) and the corresponding second push-pull electromagnet (11c4) for driving the adsorption platform positioning plate (11c5) away from the fourth adsorption platform (11c2); opposite sides of the adsorption platform base (11c1) are respectively mounted on corresponding side walls of the box-shaped mounting cavity (11b) via vertically arranged third linear guide rails (11c7) and linear motor modules (11c8); Positioning blocks (11c9) respectively adapted to corresponding positioning bolts (4b4) are arranged around the fourth adsorption platform (11c2), and each positioning bolt (4b4) can be inserted into the corresponding positioning block (11c9). A second limiting block (11c22) is installed on the surface of the side of the fourth adsorption platform (11c2) away from the cylindrical bracket (11c3), and the thickness of the second limiting block (11c22) is less than the thickness of the touch screen (15).

5. The automatic lamination system for a large display touch screen according to claim 1, characterized in that: The first film-tearing mechanism (7) comprises a second gantry (7a) arranged across the glass cover film-tearing station and a ninth electric linear module (7b) arranged on the second gantry (7a), wherein the ninth electric linear module (7b) is arranged parallel to and below the crossbeam of the second gantry (7a); The second film tearing mechanism (9) comprises a first electric linear module (9a) parallel to the linear conveying line (5) and a first mounting column (9b) vertically mounted on a slide of the first electric linear module (9a); The third film-tearing mechanism (10) comprises a third gantry (10a) arranged across the protective film-tearing station on the adhesive film and a tenth electric linear module (10b) arranged on the third gantry (10a), wherein the tenth electric linear module (10b) is arranged in parallel below the crossbeam of the third gantry (10a); The fourth film tearing mechanism (16) comprises a second electric linear module (16a) installed transversely on the hard-to-hard laminating mechanism (11), a third electric linear module (16b) installed transversely on the slide of the second electric linear module (16a), and a second mounting column (16c) installed vertically on the slide of the third electric linear module (16b), wherein the second electric linear module (16a) is parallel to the linear conveying line (5), and the third electric linear module (16b) is perpendicular to the second electric linear module (16a); A membrane clamping assembly (17) is installed on the slide of the ninth electric linear module (7b), the slide of the tenth electric linear module (10b), the first mounting column (9b) and the second mounting column (16c).

6. The automatic lamination system for a large display touch screen according to claim 5, characterized in that: The membrane clamping assembly (17) includes a clamping bracket (17a) with an L-shaped structure, an air suction head (17c) installed on the bottom surface of the clamping bracket (17a) through an air suction head bracket (17b), and an interference-free clamping module (17d) installed on the side of the clamping bracket (17a). The interference-free clamping module (17d) includes a first push-pull electromagnet (17d1) fixedly installed on the upper part of the side of the clamping bracket (17a), and a module shell (17d2) movably installed on the lower part of the side of the clamping bracket (17a). The push-pull rod of the first push-pull electromagnet (17d1) is connected to the module shell (17d2). A first return spring (17d3) is provided between the first push-pull electromagnet (17d1) and the module shell (17d2) for driving the module shell (17d2) away from the first push-pull electromagnet (17d1). A first wedge is provided in the module shell (17d2). The clamping and pressing member (17d5) comprises a wedge block portion (17d51) and a pressing portion (17d52) which together form an L-shaped structure. The pressing portion (17d52) passes through the module shell (17d2) laterally. The end of the wedge block portion (17d51) away from the pressing portion (17d52) cooperates with the adjacent end face inclined surface of the first wedge block (17d4). The module shell (17d 2) is provided with a reset push block (17d6) parallel to the pressing portion (17d52), one end of the reset push block (17d6) is supported on the wedge portion (17d51), and the other end is slidably inserted into the clamping bracket (17a), and at least one second reset spring (17d7) is provided between the reset push block (17d6) and the clamping bracket (17a) for driving the wedge portion (17d51) away from the clamping bracket (17a); When the first push-pull electromagnet (17d1) is energized, the pressing portion (17d52) protrudes outward to the bottom of the air suction head (17c) and abuts against the air suction head (17c); when the first push-pull electromagnet (17d1) is de-energized, the pressing portion (17d52) separates from the air suction head (17c) and retreats toward the interior of the module housing (17d2) to fully expose the air suction head (17c).

7. The automatic lamination system for a large display touch screen according to claim 1, characterized in that: There are three sixth electric linear modules (8d5). When the optical adhesive film (13) adsorbed by the third adsorption platform (8d2) approaches the glass cover (12) on the movable platform (4), the slides of the three sixth electric linear modules (8d5) first slide in the same direction from the outside into between the soft-to-hard bonding bracket (8d1) and the third adsorption platform (8d2), and are adjacent to the same side of the third adsorption platform (8d2). Then, the sixth electric linear module (8d5) located in the middle remains stopped, and the two sixth electric linear modules (8d5) located on the outside are started, so that the slides of the two sixth electric linear modules (8d5) are close to the other side opposite to the third adsorption platform (8d2).

8. The automatic lamination system for a large display touch screen according to claim 1, characterized in that: The touch screen conveyor line (3) comprises a conveyor line stand (3a) arranged across the end of the straight conveyor line (5) away from the glass cover plate loading station, a conveying trough (3a1) parallel to the straight conveyor line (5) is arranged on the top of the conveyor line stand (3a), and roller conveying assemblies (3b) are arranged side by side along the length direction of the conveying trough (3a1), the roller conveying assembly (3b) comprising a roller driving shaft (3b1) driven by a rotating shaft driving device and conveying rollers (3b2) uniformly distributed and fixed on the roller driving shaft (3b1), and the conveying rollers (3b2) of each roller conveying assembly (3b) are aligned along the length direction of the conveying trough (3a1).

9. The automatic lamination system for a large display touch screen according to claim 8, characterized in that: The touch screen feeding mechanism (14) comprises an electric rotating module (14a) installed at one end of the conveying trough (3a1) close to the glass cover plate feeding station and a touch screen adsorption frame (14b) that can rotate under the drive of the electric rotating module (14a), the electric rotating module (14a) comprises a rotating connecting member (14a1) rotatably installed at one end of the conveying trough (3a1) close to the glass cover plate feeding station and a first rotating driving motor (14a2) for driving the rotating connecting member (14a1) to rotate, the touch screen adsorption frame (14b) comprises a rotating connecting member (14a1) rotatably installed at one end of the conveying trough (3a1) close to the glass cover plate feeding station and a first rotating driving motor (14a2) for driving the rotating connecting member (14a1) to rotate, and the touch screen adsorption frame (14b) comprises a rotating connecting member (14a2) installed to rotate synchronously. An adsorption frame base (14b1) is mounted on a rotating connecting member (14a1), and a plurality of strip suction cup mounting portions (14b2) are arranged side by side on one side of the adsorption frame base (14b1), each strip suction cup mounting portion (14b2) is perpendicular to the adsorption frame base (14b1), and second negative pressure suction cups (14b3) are evenly distributed along the length direction. A strip adsorption frame support plate (3a2) is provided in the conveying trough (3a1), and the strip adsorption frame support plate (3a2) is located between two adjacent roller conveying assemblies (3b) and close to the hard-to-hard bonding station. When the touch screen adsorption frame (14b) rotates into the conveying trough (3a1), each strip-shaped suction cup mounting portion (14b2) is supported on the strip-shaped adsorption frame support plate (3a2), and at this time, each second negative pressure suction cup (14b3) is facing upward, and the height of each second negative pressure suction cup (14b3) is less than or equal to the height of each conveying roller (3b2).

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