Optical film laminating equipment for optimizing optical performance

Abstract

Optical film laminating equipment for optimizing optical performance at least comprises a working platform, a film feeding and discharging unit and at least one group of film tearing and laminating units, and the working platform is provided with a main working station, a first working station, a second working station and a third working station; the membrane feeding and discharging unit comprises three feeding and alignment code scanning assemblies, a discharging assembly, a first six-axis mechanical arm and a second six-axis mechanical arm, wherein the tail ends of the first six-axis mechanical arm and the second six-axis mechanical arm are provided with adsorption jigs. The feeding and alignment code scanning assemblies comprise feeding mechanisms for containing membranes and pre-alignment code scanning mechanisms comprising first image sensors. The film tearing and pasting unit comprises a turnover carrying table assembly used for bearing a film, a dry type ultrasonic cleaning mechanism used for removing dust on the film on the turnover carrying table assembly, a film tearing mechanism used for tearing off a protective film layer of the film on the turnover carrying table assembly, and a plasma cleaning machine used for cleaning the film. The first CCD camera is used for collecting an image of the film on the turnover platform assembly; and the film pasting mechanism is used for receiving the torn film and pasting the film in a rolling manner.

Description

Technical Field

[0001] The utility model relates to the technical field of optical film lamination, in particular to an optical film lamination device for optimizing optical performance. Background Art

[0002] For devices such as VR products, it is often necessary to attach an optical film to the surface of a glass substrate to improve the optical performance of the product, so as to meet the usage requirements of the product. During the process of laminating the film on the substrate surface, processes such as feeding, product cleaning, film tearing, alignment, lamination, precision inspection, and discharging are required to ensure the stable and precise lamination of the film on the substrate surface. Currently, in the industry, a structure combining a vacuum flat plate and a mesh box is mainly used for laminating multi-layer soft film sheets. Specifically, first, the AR film is placed in the mesh box, aligning the film with the positioning edge, and at the same time, the mesh box vacuum is turned on; the QWP film (quarterwaveplate) is placed on the turning plate platform, aligning the QWP film with the positioning edge and turning on the turning plate vacuum; press the start button to complete the lamination. After lamination, precision inspection is carried out. The AR film and the QWP film are placed on the turning plate platform and aligned with the positioning edge, and then the turning plate vacuum is turned on; the POL film (High translucent polarizer) is placed in the mesh box and aligned with the positioning edge, and the mesh box vacuum is turned on; press the start button to complete the lamination. After lamination, precision inspection is carried out. The above three films are placed on the turning plate platform and aligned with the positioning edge, the turning plate vacuum is turned on, the RP film is placed in the mesh box and aligned with the positioning edge, and the mesh box vacuum is turned on, press the start button to complete the lamination, and precision inspection is carried out after lamination. Among them, a number of holes with a size of 1 mm are opened on the vacuum flat plate, and these holes are evenly distributed on the entire flat plate. The laminator, the vacuum plasma cleaner, and the OMM (Optical Measuring Machine) are each independent and act separately.

[0003] However, the above-mentioned film lamination structure is a single machine tool, and only one lamination can be carried out at a time. For multi-layer film lamination, it needs to be laminated separately multiple times, resulting in insufficient efficiency of the film lamination operation. In addition, the lamination precision of the above-mentioned film lamination structure is poor, and only the physical edge of the L-shaped alignment film material can be used, resulting in a yield of only 40% for the optical performance test of the composite film product, and the product yield is insufficient. Summary of the Utility Model

[0004] Based on this, in view of the above deficiencies, it is necessary to provide an optical film lamination device for optimizing optical performance with high film lamination accuracy, high yield, and high operation efficiency.

[0005] An optical film lamination device for optimizing optical performance at least includes:

[0006] An operation platform, on which a main working position and auxiliary working positions are provided. The auxiliary working positions include a first working position on one side of the main working position, a second working position and a third working position on the other side of the main working position;

[0007] A diaphragm loading and unloading unit, which includes three loading and alignment code scanning components respectively arranged at each auxiliary working position, a unloading component arranged at the first working position, a first six-axis manipulator arranged at the first working position, and a second six-axis manipulator arranged between the second working position and the third working position. The loading and alignment code scanning components include a loading mechanism and a pre-alignment code scanning mechanism. A cavity for accommodating the diaphragm to be bonded is provided on the loading mechanism. Adsorption fixtures for vacuum-adsorbing the diaphragm in the cavity are fixed at the ends of the first six-axis manipulator and the second six-axis manipulator. The pre-alignment code scanning mechanism includes a first image sensor for scanning the label on the diaphragm; and

[0008] At least one set of film tearing and pasting units, which include a turning and loading platform component for receiving the diaphragm, a dry ultrasonic cleaning mechanism for dust removal of the diaphragm on the turning and loading platform component, a film tearing mechanism for tearing the protective film layer of the diaphragm on the turning and loading platform component, a plasma cleaner for cleaning the diaphragm, a first CCD camera for collecting the image of the diaphragm on the turning and loading platform component, and a film pasting mechanism for receiving the diaphragm after film tearing and rolling and pasting the diaphragm;

[0009] The turning and loading platform component includes a vacuum adsorption platform for receiving and vacuum-adsorbing the diaphragm unloaded by the adsorption fixture, a Y-axis driving mechanism for driving the vacuum adsorption platform to move between the auxiliary working position and the main working position, an R-axis driving mechanism for driving the vacuum adsorption platform to rotate in the vertical plane to turn the diaphragm, and a Z-axis driving mechanism for driving the vacuum adsorption platform to move in the vertical direction;

[0010] The film tearing mechanism includes a clamp for suspending above the vacuum adsorption platform and grasping the protective film layer of the diaphragm, an opening and closing driving part for driving the clamp to open and close, a pressing head installed beside the clamp and adjustable in angle relative to the clamp, an XZ two-axis driving mechanism for driving the clamp and the pressing head to move in the vertical plane, and a rotating mechanism for driving the clamp and the pressing head to rotate in the vertical plane;

[0011] The film pasting mechanism includes a mesh box with a negative pressure cavity, a mesh plate fixed on the top of the mesh box for receiving the diaphragm turned over and unloaded by the vacuum adsorption platform, an XYZ three-axis driving mechanism for driving the mesh box to move in three-dimensional space, rollers accommodated in the negative pressure cavity and rolling and pasting with the lower surface of the mesh plate, and a roller pasting mechanism for driving the rollers to move in the negative pressure cavity. The mesh holes of the mesh plate are communicated with the negative pressure cavity of the mesh box. The rollers roll and paste at least two layers of film layers between the mesh plate and the turned-over vacuum adsorption platform.

[0012] In one embodiment, the loading mechanism includes a first support frame, a first Z-axis guide rail extending in the vertical direction on the first support frame, a first support plate slidably connected to the first Z-axis guide rail and used for receiving the stacked diaphragms to be bonded, a first Z-axis driving member for driving the first support plate to lift along the first Z-axis guide rail, and a first material level sensor fixed on the first support frame and located above the first support plate. The first Z-axis guide rail and the first support plate together enclose the cavity, and the first material level sensor is electrically connected to the first Z-axis driving member and used for detecting the height of the stacked diaphragms.

[0013] The unloading assembly includes a second support frame, a second Z-axis guide rail extending in the vertical direction on the second support frame, a second support plate slidably connected to the second Z-axis guide rail and used for stacking and receiving the bonded diaphragms, a second Z-axis driving member for driving the second support plate to lift along the second Z-axis guide rail, and a second material level sensor fixed on the second support frame and located above the second support plate. The second material level sensor is electrically connected to the second Z-axis driving member and used for detecting the height of the top of the stacked diaphragms.

[0014] In one embodiment, a vacuum adsorption transition platen for carrying and transporting the diaphragms of the adsorption jig is provided in both the first working position and the second working position, or in both the first working position and the third working position. The pre-alignment code scanning mechanism further includes a second CCD camera for collecting the image of the diaphragm on the adsorption jig at one time. At the ends of both the first six-axis robot and the second six-axis robot, there is a diaphragm picking and placing jig fixed beside the adsorption jig and used for picking and placing the diaphragm on the vacuum adsorption transition platen. A plurality of vacuum holes corresponding to the edge of the diaphragm are provided on the diaphragm picking and placing jig. There are several vacuum suction cups on the adsorption jig, and a second image sensor is provided between the diaphragm picking and placing jig and the adsorption jig.

[0015] In one embodiment, a Y-axis guide rail extending along the length direction of the operation platform is provided in the main working position. The flipping and rotating table assembly further includes a Z-axis bracket slidably arranged on the Y-axis guide rail and extending in the vertical direction, and an X-axis cross plate located at the upper part of the Z-axis bracket and extending along the width direction of the operation platform. The vacuum adsorption platform is slidably arranged on the X-axis cross plate. The Y-axis driving mechanism is drivingly connected to the Z-axis bracket to enable the Z-axis bracket to move along the Y-axis guide rail. The R-axis driving mechanism is a servo motor drivingly connected to the X-axis cross plate to enable the X-axis cross plate and the vacuum adsorption platform to flip in the vertical plane. The Z-axis driving mechanism is a cylinder or an electric cylinder fixed on the X-axis cross plate and used for driving the vacuum adsorption platform to lift in the vertical direction.

[0016] In one embodiment, a linear guide rail extending in the vertical direction is provided on the X-axis cross plate, and a slider slidably matched with the linear guide rail is provided at the bottom of the vacuum adsorption platform.

[0017] In one embodiment, the film tearing mechanism further includes a jaw mounting bracket and a gantry that straddles above the Y-axis guide rail and is fixedly connected to the working platform. The gantry includes two columns arranged oppositely and extending in the vertical direction, and an X-axis guide rail fixed to the tops of the two columns and extending in the width direction of the working platform. The opening and closing drive member is a cylinder mounted on the jaw mounting bracket and used to drive the jaws to open and close. The pressing head is hingedly connected to the jaw mounting bracket. The rotating mechanism is a rotating motor rotatably connected to the jaw mounting bracket. The XZ biaxial drive mechanism includes a first bracket slidably disposed on the X-axis guide rail, a horizontal drive member for driving the first bracket to slide axially along the X-axis guide rail, a second bracket slidably disposed on the first bracket, and a vertical drive member for driving the second bracket to lift along the height direction of the first bracket. The jaw mounting bracket is rotatably mounted on the second bracket, and the jaw mounting bracket and the second bracket are in limit fit along the vertical direction.

[0018] In one embodiment, the roller fitting mechanism includes a lead screw received in the negative pressure chamber, a nut located in the negative pressure chamber and threadedly connected to the lead screw, a motor located outside the mesh box and used to drive the lead screw to rotate. The roller is rotatably fitted on the upper surface of the nut, and a chute is provided on the inner wall of the mesh box. The edge of the nut is embedded in the chute and is slidably engaged with the inner wall of the mesh box.

[0019] In one embodiment, a corner cutting assembly is provided in the second working position or the third working position. The corner cutting assembly includes a waste film frame, a bracket fixed beside the waste film frame, a cantilever fixed to the top end of the bracket and suspended above the waste film frame, and a pneumatic shear fixed to the end of the cantilever and corresponding to the top opening of the waste film frame.

[0020] In one embodiment, a first reserved working position is provided between the loading mechanism and the unloading assembly in the first working position, a second reserved working position is provided between the loading mechanisms in the second working position and the third working position, a waste material bin for receiving waste materials is provided in the first working position, and a waste film box is provided in the main working position adjacent to the first working position.

[0021] In one embodiment, the optical film laminating device further includes a dust-proof cover fixed on the working platform and covering the film sheet loading and unloading unit and the film tearing and laminating unit. A gas filtering device is provided at the top of the dust-proof cover.

[0022] The optical film laminating device for optimizing the optical performance of the present utility model automatically grabs the film to be laminated through the first six-axis manipulator and the second six-axis manipulator, and cooperates with the film peeling mechanism through the turnover table assembly to peel off the protective film layer on the surface of the film. Through the mutual cooperation of the vacuum adsorption platform and the roller in the film laminating mechanism, the rolling lamination of the film is realized. It can realize the automatic lamination of multiple layers of films with only one feeding, without separate multiple laminations, improving the lamination efficiency of the film. The detection of the film image is realized through the first CCD camera, which is convenient for timely adjusting the position of the film to be laminated, thereby improving the lamination accuracy of the film and further increasing the yield rate of the finished film. Description of the Drawings

[0023] Figure 1 Schematic structural diagram of the optical film laminating device in an embodiment of the present utility model;

[0024] Figure 2 Schematic structural diagram of the film loading and unloading unit in an embodiment of the present utility model;

[0025] Figure 3 Schematic structural diagram of the first six-axis manipulator and the loading and unloading handling module in an embodiment of the present utility model;

[0026] Figure 4 Schematic structural diagram of the loading and unloading handling module in an embodiment of the present utility model;

[0027] Figure 5 Schematic structural diagram of the pre-alignment code scanning mechanism in an embodiment of the present utility model;

[0028] Figure 6 Schematic structural diagram of the loading mechanism in an embodiment of the present utility model;

[0029] Figure 7 Schematic structural diagram of the corner cutting assembly in an embodiment of the present utility model;

[0030] Figure 8 Schematic structural diagram of the main working position part in an embodiment of the present utility model;

[0031] Figure 9 Schematic structural diagram of the film peeling mechanism in an embodiment of the present utility model;

[0032] Figure 10 Schematic structural diagram of the turnover table assembly in an embodiment of the present utility model;

[0033] Figure 11 Schematic structural diagram of the film laminating mechanism in an embodiment of the present utility model;

[0034] Figure 12Schematic structural diagram of the roller fitting mechanism in an embodiment of the present utility model. Detailed implementation manners

[0035] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0036] Please refer to Figure 1-11, the present utility model discloses an optical film laminating device with high film laminating accuracy, high yield and high operation efficiency, which optimizes optical performance. The optical film laminating device at least includes an operation platform 100, a film loading and unloading unit 200, and at least one set of film tearing and laminating units 300. The operation platform 100 is provided with a main working position and auxiliary working positions. The auxiliary working positions include a first working position on one side of the main working position, a second working position and a third working position on the other side of the main working position. The film loading and unloading unit 200 and the film tearing and laminating units 300 are arranged on the operation platform 100. A cabinet 110 is provided below the operation platform 100, and a control circuit board and a power supply device for controlling the operation of the electrical components in the film loading and unloading unit 200 and the film tearing and laminating units 300 are accommodated in the cabinet 110. The film loading and unloading unit 200 includes three loading and alignment scanning components respectively arranged at each auxiliary working position, a unloading component 210 arranged at the first working position, a first six-axis manipulator 220 arranged at the first working position, and a second six-axis manipulator 230 arranged between the second working position and the third working position. That is to say, the optical film laminating device of this embodiment is used to simultaneously load three types of films to provide raw materials for the laminating operations of the three types of films. Since two parts of film laminating operations are completed at one time during the laminating process, the films loaded at the second working position and the third working position do not need to be grabbed simultaneously. Therefore, the second working position and the third working position can share a second six-axis manipulator 230 to simplify the device structure and reduce the production cost of the device. The loading and alignment scanning component includes a loading mechanism 240 and a pre-alignment scanning mechanism. A cavity for accommodating the film to be laminated is provided on the loading mechanism 240. Adsorption jigs 221 for vacuum-adsorbing the film in the cavity are fixed at the ends of the first six-axis manipulator 220 and the second six-axis manipulator 230. The pre-alignment scanning mechanism includes a first image sensor 250 for scanning the label on the film. The first six-axis manipulator 220 and the second six-axis manipulator 230 are six-axis robotic arms, which include six joints such as a rotary joint, a lower arm, an upper arm, a wrist rotary joint, a wrist swing joint and a wrist swivel joint, and 6 servo motors for driving the above six joints to move, so that the end of the six-axis manipulator can achieve six-degree-of-freedom movement. In this embodiment, the first six-axis manipulator 220 and the second six-axis manipulator 230 can be any commercially available six-axis manipulator with a size adapted to the optical film laminating device of this solution, and their specific structures and working principles will not be elaborated here.

[0037] In this embodiment, when loading the diaphragm, a protective film layer is provided on the surface of the diaphragm, and a label is attached to the protective film layer. By scanning the label with the first image sensor 250, the counting of the adhered diaphragms can be realized. The film tearing and laminating unit 300 includes a turnover table assembly 310 for receiving the diaphragm, a dry ultrasonic cleaning mechanism 320 for removing dust from the diaphragm on the turnover table assembly 310, a film tearing mechanism 330 for tearing the protective film layer of the diaphragm on the turnover table assembly 310, a plasma cleaner 340 for cleaning the diaphragm, a first CCD camera 350 for collecting the image of the diaphragm on the turnover table assembly 310, and a film laminating mechanism 360 for receiving the diaphragm after film tearing and rolling and laminating the diaphragm. Among them, on the one hand, the turnover table assembly 310 cooperates with the film tearing mechanism 330 to tear the protective film layer on the surface of the diaphragm. On the other hand, the turnover table assembly 310 also cooperates with the film laminating mechanism 360 to position the diaphragm to be laminated and laminate the diaphragm. The dry ultrasonic cleaning mechanism 320 is used to clean the diaphragm before film tearing at one time to prevent dust particles on the protective film layer from contaminating the film tearing mechanism 330; the plasma cleaner 340 is used to clean the diaphragm after film tearing to ensure the cleanliness of the diaphragm surface, avoid unevenness at the film laminating part of the diaphragm, and improve the film laminating quality. The first CCD camera 350 is electrically connected to the drive structure in the turnover table assembly 310 to feedback and adjust the position and angle of the diaphragm on the turnover table assembly 310, so that the two diaphragms to be laminated can be accurately aligned.

[0038] The flipping turntable assembly 310 includes a vacuum adsorption platform 311 for receiving and vacuum adsorbing the film removed by the adsorption fixture 221, a Y-axis driving mechanism for driving the vacuum adsorption platform 311 to move between the secondary working position and the primary working position, an R-axis driving mechanism 312 for driving the vacuum adsorption platform 311 to rotate in the vertical plane to flip the film, and a Z-axis driving mechanism 313 for driving the vacuum adsorption platform 311 to move in the vertical direction. In this embodiment, the X-axis direction is the width direction of the work platform 100, the Y-axis direction is the length direction of the work platform 100, and the Z-axis direction is the height direction (i.e., the vertical direction) of the work platform 100. The Y-axis driving mechanism and the Z-axis driving mechanism 313 are electrically connected to the first CCD camera 350 and are used to adjust the position of the film in the YZ plane. The R-axis driving mechanism 312 is used to adjust the angle of the film so that the film can be flipped and attached to another film, enabling the two films to be aligned. The film tearing mechanism 330 includes a jaw 331 suspended above the vacuum adsorption platform 311 and grasping the protective film layer on the film, an opening and closing driving member for driving the jaw 331 to open and close, a pressing head 332 installed beside the jaw 331 and having an adjustable angle relative to the jaw 331, an XZ biaxial driving mechanism for driving the jaw 331 and the pressing head 332 to move in the vertical plane, and a rotating mechanism 333 for driving the jaw 331 and the pressing head 332 to rotate in the vertical plane. The opening and closing driving member is used to open or close the jaw 331 so that the jaw 331 can grip or release the protective film layer on the film; the XZ biaxial driving mechanism is used to adjust the horizontal and vertical positions of the jaw 331 so that the jaw 331 can lift upward while gripping the protective film layer and pull the protective film layer along one side, thereby tearing the protective film layer from the film. The pressing head 332 is used to press the film during the process of the jaw 331 gripping and tearing the protective film layer, achieving the positioning of the film to prevent the film from being lifted along with the protective film layer driven by the jaw 331 and ensuring the normal progress of the film tearing operation. The rotating mechanism 333 is used to adjust the relative position between the jaw 331 and the pressing head 332 so that the pressing head 332 rotates to one side of the film tearing part on the jaw 331, in order to press the torn part of the film by the pressing head 332 and prevent the film from being lifted. The film pasting mechanism 360 includes a mesh box 361 having a negative pressure cavity, a mesh plate 362 fixed on the top of the mesh box 361 and used to receive the film flipped and unloaded by the vacuum adsorption platform 311, an XYZ triaxial driving mechanism 370 for driving the mesh box 361 to move in three-dimensional space, rollers 363 housed in the negative pressure cavity and rollingly attached to the lower surface of the mesh plate 362, and a roller attachment mechanism for driving the rollers 363 to move in the negative pressure cavity. The mesh holes of the mesh plate 362 are communicated with the negative pressure cavity of the mesh box 361, and the rollers 363 rollingly attach to at least two layers of film layers between the mesh plate 362 and the flipped vacuum adsorption platform 311.

[0039] During the film laminating operation, first, the feeding mechanism 240 at the first working position feeds, the first six-axis manipulator 220 grabs, scans the code, the dry ultrasonic cleaning mechanism 320 removes dust, tears the film, and the first CCD camera 350 detects the first film to be laminated in sequence. The first film after tearing the film is placed on the vacuum adsorption platform 311. Subsequently, the vacuum adsorption platform 311 moves to the mesh box 361 driven by the Y-axis driving mechanism. The R-axis driving mechanism 312 drives the vacuum adsorption platform 311 to flip, so that the film on the vacuum adsorption platform 311 is parallel to the upper surface of the mesh plate 362. Subsequently, the Z-axis driving mechanism 313 controls the vacuum adsorption platform 311 to press down, so that the first film is attached to the upper surface of the mesh plate 362. In this way, the first film is tightly attached to the upper surface of the mesh plate 362 under the action of the negative pressure in the mesh box 361. At the same time, the negative pressure of the vacuum adsorption platform 311 is disconnected, so that the first film is separated from the vacuum adsorption platform 311, and the Z-axis driving mechanism 313, the R-axis driving mechanism 312, and the Y-axis driving mechanism are controlled to work again, so that the flipping turntable assembly 310 leaves the mesh box 361, realizing the setting of the first film on the mesh box 361.

[0040] Subsequently, the feeding mechanism 240 at the second working position feeds, the second six-axis manipulator 230 grabs, scans the code, the dry ultrasonic cleaning mechanism 320 removes dust, tears the film, and the first CCD camera 350 detects the second film to be laminated in sequence. The second film after tearing the film is placed on the vacuum adsorption platform 311. The vacuum adsorption platform 311 moves to the mesh box 361 driven by the Y-axis driving mechanism. The R-axis driving mechanism 312 drives the vacuum adsorption platform 311 to flip, so that the second film on the vacuum adsorption platform 311 is parallel to the upper surface of the mesh plate 362. Subsequently, the Z-axis driving mechanism 313 controls the vacuum adsorption platform 311 to press down, so that the second film is attached to the first film on the mesh plate 362. At the same time, the negative pressure of the vacuum adsorption platform 311 is disconnected, and the first film and the second film are attached under the joint action of the mesh plate 362 and the vacuum adsorption platform 311 (not completely attached at this time). Subsequently, the roller laminating mechanism controls the roller to move in the mesh box 361, so that the roller rolls in contact with the first film while moving relative to the first film, so as to firmly attach each part of the first film to the second film, thereby realizing the laminating operation of the first film and the second film.

[0041] Finally, the loading mechanism 240 at the third working position feeds, grabs, scans the code, removes dust with the dry ultrasonic cleaning mechanism 320, tears the film, and detects the third diaphragm to be bonded in sequence. The third diaphragm after film tearing is placed on the vacuum adsorption platform 311. Driven by the Y-axis drive mechanism, the vacuum adsorption platform 311 moves to the wire mesh box 361. Driven by the R-axis drive mechanism 312, the vacuum adsorption platform 311 is flipped so that the third diaphragm on the vacuum adsorption platform 311 is parallel to the upper surface of the wire mesh plate 362. Subsequently, the Z-axis drive mechanism 313 controls the vacuum adsorption platform 311 to press down so that the third diaphragm is bonded to the upper surface of the film structure after the previous bonding on the wire mesh plate 362 (i.e., the upper surface of the original second diaphragm). At the same time, the negative pressure of the vacuum adsorption platform 311 is disconnected, and the third diaphragm and the film structure are bonded under the combined action of the wire mesh plate 362 and the vacuum adsorption platform 311 (not fully bonded at this time). Subsequently, the roller bonding mechanism controls the roller to move in the wire mesh box 361 so that while the roller moves relative to the film structure, it also makes rolling contact with the film structure, thereby firmly bonding each part of the film structure to the third diaphragm, thus realizing the bonding operation of the film structure and the third diaphragm, that is, completing the bonding operation of the first diaphragm, the second diaphragm, and the third diaphragm.

[0042] In addition, it should be noted that during actual operation, the second diaphragm after material taking can also be directly placed on the wire mesh plate 362 of the wire mesh box 361, and then the second diaphragm is subjected to dust removal, film tearing, and cleaning operations. Subsequently, the processed first diaphragm is covered on the second diaphragm on the wire mesh plate 362 and bonded; the bonded diaphragm is adsorbed on the vacuum adsorption platform 311, and then the third diaphragm is directly placed on the wire mesh plate 362 of the wire mesh box 361. The third diaphragm is subjected to dust removal, film tearing, and cleaning operations, and then the first diaphragm and the second diaphragm bonded on the vacuum adsorption platform 311 are covered on the third diaphragm on the wire mesh plate 362 for further film bonding operation.

[0043] The above-mentioned optical film bonding equipment for optimizing optical performance automatically grabs the diaphragms to be bonded through the first six-axis manipulator 220 and the second six-axis manipulator 230, and tears the protective film layer on the surface of the diaphragm through the cooperation of the turnover stage assembly 310 and the film tearing mechanism 330. Through the mutual cooperation of the vacuum adsorption platform 311 and the roller in the film pasting mechanism 360, the rolling bonding of the diaphragm is realized. It only needs one feeding to realize the automatic bonding of multiple layers of diaphragms, without the need for separate multiple bondings, improving the bonding efficiency of the diaphragms; the position of the diaphragm to be bonded can be adjusted in time through the detection of the diaphragm image by the first CCD camera 350, thereby improving the bonding accuracy of the diaphragm and further improving the yield rate of the finished diaphragm.

[0044] In one embodiment, the optical film laminating device further includes a dust-proof cover fixed on the working platform 100 and covering the film loading and unloading unit 200 and the film tearing and laminating unit 300. A gas filtering device is provided at the top of the dust-proof cover. Preferably, the dust-proof cover is made of a transparent material. For example, the dust-proof cover is formed by bonding acrylic plates, or the dust-proof cover is made of PC, PMMA or PET materials, so that the staff can observe the film laminating situation during the operation. In addition, the dust-proof cover is provided with openable and closable protective doors corresponding to the first working position, the second working position and the third working position, so that the operator can add and supplement the film in time according to the material situation in the loading mechanism 240. In this embodiment, the dust-proof cover is used to separate the optical film laminating device from the external environment to reduce the influence of dust and impurities in the environment on the surface cleanliness of the film; and by placing multiple loading mechanisms 240 in the dust-proof cover and laminating multiple layers of films, the number of loading and unloading times is reduced, and the risk of introducing external dust or foreign objects can be reduced, so as to avoid the problem of excessive uneven points at the laminating position caused by foreign objects, thereby improving the yield of the laminating operation and reducing the cost of film lamination. By providing a gas filtering device at the top of the dust-proof cover, while performing gas exchange inside and outside the dust-proof cover and accelerating heat dissipation inside the dust-proof cover, dust and impurities in the external environment can be prevented from entering the inner cavity of the dust-proof cover. The gas filtering device can be one of a primary paper frame filter, a medium efficiency bag filter, a partitioned high efficiency filter, a V-type pleated filter, or other commercially available gas filters of other models.

[0045] In addition, in this embodiment, a first reserved working position is provided between the loading mechanism 240 and the unloading assembly 210 in the first working position, a second reserved working position is provided between the loading mechanism 240 in the second working position and the loading mechanism 240 in the third working position, and a waste bin 260 for accommodating waste is provided in the first working position, and a waste film box 270 is provided in the main working position adjacent to the first working position. Loading mechanisms 240 can be respectively arranged in the first reserved working position and the second reserved working position. The operations such as gripping, scanning, dust removal, film tearing, and vision inspection of the film in the first reserved working position and the operations such as gripping, scanning, dust removal, film tearing, and vision inspection of the film in the first working position adopt the same set of equipment. Similarly, the operations such as gripping, scanning, dust removal, film tearing, and vision inspection of the film in the second reserved working position and the operations such as gripping, scanning, dust removal, film tearing, and vision inspection of the film in the second working position or the third working position adopt the same set of equipment. The film laminating operation can refer to the above three-layer film laminating operation process, and only the films need to be laminated layer by layer. In this way, the optical film laminating device of this embodiment can also realize the laminating operation of four-layer films or five-layer films, thereby expanding the applicable range of the optical film laminating device. The waste bin 260 is used to collect the torn protective film layer, and the waste film box 270 is used to accommodate the products with failed lamination, so as to recycle and centrally process the waste and failed products.

[0046] See also Figure 6 The loading mechanism 240 includes a first support frame 241, a first Z-axis guide rail 242 located on the first support frame 241 and extending in the vertical direction, a first support plate 243 slidably connected to the first Z-axis guide rail 242 and used to receive the stacked films to be bonded, a first Z-axis driving member 244 used to drive the first support plate 243 to rise and fall along the first Z-axis guide rail 242, and a first material level sensor 245 fixed on the first support frame 241 and located above the first support plate 243. The first Z-axis guide rail 242 and the first support plate 243 together form a cavity. The first material level sensor 245 is electrically connected to the first Z-axis driving member 244 and is used to detect the height of the stacked films. Preferably, the first Z-axis driving member 244 is a cylinder or an electric cylinder arranged at the bottom of the first support plate 243, and the driving end of the first Z-axis driving member 244 is fixedly connected to the first support plate 243 to adjust the height of the first support plate 243; the first material level sensor 245 is a laser sensor or a contact switch, and when the first Z-axis driving member 244 is a cylinder, the first material level sensor 245 is electrically connected to the electromagnetic valve that controls the on-off of the cylinder gas circuit. By setting the first material level sensor 245, the first material level sensor 245 detects the height of the stacked diaphragms (the position of the top of the stacked diaphragms) in real time, so that the first Z-axis driving member 244 adjusts the height of the first support plate 243 in real time according to the signal fed back by the first material level sensor 245, so as to facilitate the control of the material taking height of the diaphragms in the feeding mechanism 240 to always remain consistent. The unloading assembly 210 includes a second support frame, a second Z-axis guide rail located on the second support frame and extending in the vertical direction, a second support plate slidably connected to the second Z-axis guide rail and used to stack and receive the laminated diaphragms, a second Z-axis drive member used to drive the second support plate to rise and fall along the second Z-axis guide rail, and a second material level sensor fixed on the second support frame and located above the second support plate, the second material level sensor being electrically connected to the second Z-axis drive member and used to detect the height of the top of the stacked diaphragms. The structure of the unloading assembly 210 of this embodiment is the same as that of the loading mechanism 240, and the main difference between the two is that the diaphragms carried are different, the former carries the laminated multilayer diaphragms, and the latter is used to carry the single-layer diaphragms to be laminated. Similarly, the second material level sensor detects the height of the stacked diaphragms (the position of the top of the stacked diaphragms) in real time, so that the second Z-axis drive member adjusts the height of the second support plate in real time according to the signal fed back by the second material level sensor, so as to facilitate the control of the unloading height of the diaphragms in the unloading assembly 210 to remain consistent.

[0047] Please combine Figure 2-4, in one embodiment, a vacuum adsorption transition platen 280 for carrying and transporting the diaphragm adsorbed by the adsorption jig 221 is provided within the first working position and the second working position, or within the first working position and the third working position. The pre-alignment code scanning mechanism further includes a second CCD camera 290 for collecting the image of the diaphragm on the adsorption jig 221 at one time. A pick-and-place diaphragm jig 222 for grasping the diaphragm on the vacuum adsorption transition platen 280 is fixed at the end of both the first six-axis robot 220 and the second six-axis robot 230 and is located beside the adsorption jig 221. A plurality of vacuum holes corresponding to the edge of the diaphragm are provided on the pick-and-place diaphragm jig 222. The adsorption jig 221 is provided with a number of vacuum suction cups. A second image sensor 223 is provided between the pick-and-place diaphragm jig 222 and the adsorption jig 221. In this embodiment, the adsorption jig 221, the vacuum adsorption transition platen 280, and the second image sensor 223 constitute a loading and unloading handling module; the second CCD camera 290 and the first image sensor 250 are installed on the same bracket. In this embodiment, the vacuum adsorption transition platen 280 is actually a diaphragm transfer platform, so as to adsorb and flatten the grasped diaphragm to ensure the flatness of the diaphragm. Specifically, when the first six-axis robot 220 or the second six-axis robot 230 grasps the diaphragm, first, the vacuum suction cups on the adsorption jig 221 suck the diaphragm in the loading mechanism 240. After the second CCD camera 290 collects the image of the diaphragm on the adsorption jig 221, the shape of the first six-axis robot or the second six-axis robot 230 is controlled and adjusted to adjust the relative position between the adsorption jig 221 and the vacuum adsorption transition platen 280, so that the diaphragm on the adsorption jig 221 can be accurately placed on the vacuum adsorption transition platen 280, realizing the pre-positioning of the diaphragm. After the diaphragm is placed on the vacuum adsorption transition platen 280, it is adsorbed on the vacuum adsorption transition platen 280 and flattened under the negative pressure. Subsequently, the pick-and-place diaphragm jig 222 adsorbs and grasps the diaphragm to further transfer the diaphragm to the vacuum adsorption platform 311. The second image sensor 223 is used to collect the image of the diaphragm on the vacuum adsorption transition platen 280 after the adsorption jig 221 places the diaphragm on the vacuum adsorption transition platen 280, so as to further adjust the shape of the first six-axis robot 220 or the second six-axis robot 230, so that the pick-and-place diaphragm jig 222 can accurately grasp the diaphragm. In this embodiment, by providing a plurality of vacuum holes at the edge of the pick-and-place diaphragm jig 222, it is possible to prevent the problem that the flatness of the thin and soft diaphragm is affected by the vacuum adsorption force due to the excessive vacuum at the center position of the diaphragm during the fitting process, so as to reduce the wavy lines generated during the diaphragm fitting process, avoid the appearance of ghost images in the finished product after the diaphragm is fitted or causing the user to have a sense of dizziness, so as to improve the user experience. After testing, with the pick-and-place diaphragm jig 222 adopting this solution, the non-ripple rate of the diaphragm fitting and the yield rate of the optical performance test reach 100%.

[0048] The first CCD camera 350 and the second CCD camera 290 have the same structure. Here, the structure of the second CCD camera 290 will be described in combination with the pre-alignment code scanning mechanism. Specifically, please refer to Figure 5 , the second CCD camera 290 includes a camera 291, a lens 292 located above the camera 291 and fixedly connected to the camera 291, and a light source 293 located above the lens 292 and mounted on the lens 292. Among them, the light source 293 is used to improve the light condition on the surface of the item to be image-captured, so as to capture clear images; the camera 291 is used to collect image information, and the lens 292 is used to improve the light condition entering the shooting area of the camera 291 to improve the image quality. Further, in this embodiment, the pre-alignment code scanning mechanism further includes a linear motor for driving the camera to move in the X-axis direction and a frame for mounting the linear motor. The first image sensor 250 is fixed on the frame, and the first image sensor 250 uses a CMOS image sensor.

[0049] Please combine Figure 8 with Figure 10, a Y-axis guide rail 314 extending along the length direction of the working platform 100 is provided inside the main working position. The turning and loading platform assembly 310 further includes a Z-axis bracket 315 slidably arranged on the Y-axis guide rail 314 and extending along the vertical direction, and an X-axis cross plate 316 located at the upper part of the Z-axis bracket 315 and extending along the width direction of the working platform 100. The vacuum adsorption platform 311 is slidably arranged on the X-axis cross plate 316. The Y-axis driving mechanism is drivingly connected to the Z-axis bracket 315 to enable the Z-axis bracket 315 to move along the Y-axis guide rail 314. The R-axis driving mechanism 312 is a servo motor drivingly connected to the X-axis cross plate 316 to enable the X-axis cross plate 316 and the vacuum adsorption platform 311 to flip in the vertical plane; the Z-axis driving mechanism 313 is a cylinder or an electric cylinder fixed on the X-axis cross plate 316 and driving the vacuum adsorption platform 311 to lift and lower along the vertical direction. Further, a plurality of adsorption holes are provided on the vacuum adsorption platform 311, a sealing ring is provided at the edge of the vacuum adsorption platform 311, the Z-axis driving mechanism 313 is an electric cylinder, and the Y-axis driving mechanism is a linear motor or a transmission structure combined with a motor and a screw nut. During the film tearing and film laminating processes, the Y-axis driving mechanism adjusts the movement of the vacuum adsorption platform 311 along the Y-axis to make the vacuum adsorption platform 311 close to the film tearing mechanism 330 or the mesh box 361; the R-axis driving mechanism 312 adjusts the rotation angle of the vacuum adsorption platform 311 to enable the film to cover the mesh plate 362; the Z-axis driving mechanism 313 is used to laminate the film on the vacuum adsorption platform 311 with the film on the mesh plate 362 to realize the positioning of the film. Further preferably, a linear guide rail 317 extending along the vertical direction is provided on the X-axis cross plate 316, and a slider 318 slidably matched with the linear guide rail 317 is provided at the bottom of the vacuum adsorption platform 311. Through the sliding cooperation of the linear guide rail 317 and the slider 318, the lifting path of the vacuum adsorption platform 311 along the Z-axis direction is defined, avoiding the deviation of the vacuum adsorption platform 311 during the lifting process to ensure that the two layers of films on the mesh plate 362 can be aligned.

[0050] The dry ultrasonic cleaning mechanism 320 used in this embodiment is a common USC cleaning machine on the market. There is an ultrasonic generating cavity and vacuum adsorption cavities on both sides of the ultrasonic generating cavity in its dust removal head. After the dust particles adhere to the film surface under the action of the adsorption layer, the vacuum cavity is used to adsorb the dust particles. When the dust particles are separated from the film surface, the ultrasonic reflection is used to drive the dust particles up, and the moving dust particles are instantly sucked away by the negative pressure in the vacuum adsorption cavity, so as to achieve the effect of cleaning the dust particles on the film surface.

[0051] Please combine Figure 8 with Figure 9, the film tearing mechanism 330 further includes a jaw mounting bracket and a gantry 334 straddling above the Y-axis guide rail 314 and fixedly connected to the working platform 100. The gantry 334 includes two columns arranged oppositely and extending in the vertical direction, and an X-axis guide rail fixed at the tops of the two columns and extending in the width direction of the working platform 100; the opening and closing driving member is a cylinder mounted on the jaw mounting bracket and used to drive the jaws 331 to open and close. The pressing head 332 is hinged to the jaw mounting bracket. The rotating mechanism 333 is a rotating motor rotatably connected to the jaw mounting bracket. The XZ two-axis driving mechanism includes a first bracket 335 slidably disposed on the X-axis guide rail, a horizontal driving member 336 for driving the first bracket 335 to slide axially along the X-axis guide rail, a second bracket 337 slidably disposed on the first bracket 335, and a vertical driving member 338 for driving the second bracket 337 to lift along the height direction of the first bracket 335. The jaw 331 mounting bracket is rotatably mounted on the second bracket 337, and the jaw 331 mounting bracket and the second bracket 337 are in limit fit along the vertical direction. Further preferably, a spring is also provided at the hinge connection part between the pressing head 332 and the jaw 331 mounting bracket, and the height of the lowest point on the pressing head 332 is lower than the height of the lowest point on the jaw 331. In this way, before the jaw 331 contacts the protective film layer on the diaphragm, the pressing head 332 abuts against the diaphragm. As the jaw 331 further descends, the spring is stretched, and the pressing head 332 still abuts against the diaphragm until the jaw 331 contacts the protective film layer and grabs the protective film layer, the spring resets, and the pressing head 332 leaves the diaphragm. During this process, the pressing head 332 continuously maintains contact with the diaphragm to ensure the reliability of the diaphragm limiting during the film tearing process. In this embodiment, through the cooperation of the XZ two-axis driving mechanism and the rotating mechanism 333, the jaw 331 can grab and tear off the protective film layer, so as to smoothly remove the protective film layer from the diaphragm.

[0052] Please refer to Figure 11 and Figure 12, In one embodiment, the roller fitting mechanism includes a lead screw 364 housed in the negative pressure chamber, a nut 365 located in the negative pressure chamber and threadedly connected to the lead screw 364, and a motor 366 located outside the mesh box 361 and driving the lead screw 364 to rotate. The roller 363 is rotatably installed on the upper surface of the nut 365, and a chute is provided on the inner wall of the mesh box. The edge of the nut 365 is embedded in the chute and slidably engaged with the inner wall of the mesh box to limit the nut and prevent the nut from rotating relative to the lead screw. Further, an arc groove is provided on the upper surface of the nut 365. The arc groove has a major arc structure (i.e., the central angle corresponding to the arc groove is greater than 180°). A plurality of rollers 363 are arranged side by side and rollingly in the arc groove. So that during the process of the nut 365 moving relative to the lower surface of the mesh plate 362, the rollers 363 can rollingly contact each part on the lower surface of the mesh plate 362, thereby ensuring the rolling fitting effect on each part of the two-layer diaphragm. The surface of the roller 363 is coated with silica gel, and the Shore hardness of the silica gel is 65A, which has characteristics such as anti-static and anti-sticking. In addition, the XYZ three-axis drive mechanism 370 for driving the mesh box 361 to move in three-dimensional space includes a support platform slidably arranged on the Y-axis guide rail, a linear motor driving the support platform to move axially along the Y-axis guide rail, a mounting table located above the support platform, an adjusting nut fixed to the bottom of the mounting table, an adjusting lead screw passing through the adjusting nut and threadedly connected to the adjusting nut and extending in the X-axis direction, a driving motor fixed on the support platform and used to drive the adjusting lead screw to rotate, and a lifting cylinder fixed on the upper surface of the mounting table and used to lift the mesh box 361. Thus, through the linear motor, the driving motor and the lifting cylinder, the position of the mesh box 361 can be moved in three-dimensional space so that the mesh plate 362 can accurately receive the diaphragm.

[0053] Please refer to Figure 1 and Figure 7 , A corner-cutting assembly 380 is provided in the second working position or the third working position. The corner-cutting assembly 380 includes a waste film frame 381, a bracket 382 fixed beside the waste film frame 381, a cantilever 383 fixed at the top of the bracket 382 and suspended above the waste film frame 381, and a pneumatic shear 384 fixed at the end of the cantilever 383 and corresponding to the top opening of the waste film frame 381. After the diaphragm is taken, a corner-cutting operation needs to be performed on the diaphragm so that the shape of the diaphragm meets the fitting requirements. In this embodiment, the pneumatic shear 384 cuts off the sharp corners at the edge of the diaphragm, and the waste film frame 381 collects the cut film corners, reducing the difficulty of collecting waste film.

[0054] The optical film laminating device with optimized optical performance adopting this solution simultaneously grabs multiple film pieces by the first six-axis manipulator 220 and the second six-axis manipulator 230, realizes the preparation of auxiliary materials in a rotary table manner, reduces the lamination cycle time, and the time for two-time lamination (i.e., laminating three film pieces together) is less than 30 s. The film pieces are aligned by the first CCD camera 350 and the second CCD camera 290, so that the horizontal displacement error of the film pieces is within 0±0.15 mm, the angular error is within 0±0.15°, the yield rate of the size accuracy for one-time lamination is judged to be 98%, the yield rate of the size accuracy after removing unqualified products is 99.9%, and the misjudgment rate of AOI (Automatic Optical Inspection) is 0.1%.

[0055] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0056] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An optical film laminating device for optimizing optical performance, characterized in that, At least including: An operation platform, on which there are a main working position and auxiliary working positions. The auxiliary working positions include a first working position on one side of the main working position, a second working position and a third working position on the other side of the main working position; A diaphragm loading and unloading unit, which includes three loading and pre-alignment code scanning components respectively arranged at each auxiliary working position, a unloading component arranged at the first working position, a first six-axis robot arranged at the first working position, and a second six-axis robot arranged between the second working position and the third working position. The loading and pre-alignment code scanning component includes a loading mechanism and a pre-alignment code scanning mechanism. The loading mechanism is provided with a cavity for accommodating the diaphragm to be bonded. At the end of the first six-axis robot and the second six-axis robot, there are adsorption fixtures for vacuum adsorbing the diaphragm in the cavity. The pre-alignment code scanning mechanism includes a first image sensor for scanning the label on the diaphragm; and At least one set of film tearing and film pasting units, which include a turning and loading platform component for receiving the diaphragm, a dry ultrasonic cleaning mechanism for dust removal of the diaphragm on the turning and loading platform component, a film tearing mechanism for tearing the protective film layer of the diaphragm on the turning and loading platform component, a plasma cleaner for cleaning the diaphragm, a first CCD camera for collecting the image of the diaphragm on the turning and loading platform component, and a film pasting mechanism for receiving the diaphragm after film tearing and rolling and pasting the diaphragm; The turning and loading platform component includes a vacuum adsorption platform for receiving and vacuum adsorbing the diaphragm unloaded by the adsorption fixture, a Y-axis driving mechanism for driving the vacuum adsorption platform to move between the auxiliary working position and the main working position, an R-axis driving mechanism for driving the vacuum adsorption platform to rotate in the vertical plane to turn the diaphragm, and a Z-axis driving mechanism for driving the vacuum adsorption platform to move in the vertical direction; The film tearing mechanism includes a clamp for suspending above the vacuum adsorption platform and grasping the protective film layer of the diaphragm, an opening and closing driving part for driving the clamp to open and close, a pressing head installed beside the clamp and with an adjustable angle relative to the clamp, an XZ two-axis driving mechanism for driving the clamp and the pressing head to move in the vertical plane, and a rotating mechanism for driving the clamp and the pressing head to rotate in the vertical plane; The film pasting mechanism includes a mesh box with a negative pressure cavity, a mesh plate fixed on the top of the mesh box and used for receiving the diaphragm turned over and unloaded by the vacuum adsorption platform, an XYZ three-axis driving mechanism for driving the mesh box to move in three-dimensional space, rollers accommodated in the negative pressure cavity and rolling and pasting with the lower surface of the mesh plate, and a roller pasting mechanism for driving the rollers to move in the negative pressure cavity. The mesh holes of the mesh plate are communicated with the negative pressure cavity of the mesh box, and the rollers roll and paste at least two layers of film layers between the mesh plate and the turned-over vacuum adsorption platform.

2. The optical film laminating device according to claim 1, wherein The loading mechanism includes a first support frame, a first Z-axis guide rail located on the first support frame and extending in a vertical direction, a first support plate slidably connected to the first Z-axis guide rail and used to receive the stacked films to be bonded, a first Z-axis driving member used to drive the first support plate to rise and fall along the first Z-axis guide rail, and a first material level sensor fixed to the first support frame and located above the first support plate, the first Z-axis guide rail and the first support plate together enclose the cavity, and the first material level sensor is electrically connected to the first Z-axis driving member and used to detect the height of the stacked films; The unloading assembly includes a second support frame, a second Z-axis guide rail located on the second support frame and extending in a vertical direction, a second support plate slidably connected to the second Z-axis guide rail and used for stacking and receiving the laminated films, a second Z-axis driving component used for driving the second support plate to rise and fall along the second Z-axis guide rail, and a second material level sensor fixed on the second support frame and located above the second support plate, wherein the second material level sensor is electrically connected to the second Z-axis driving component and used for detecting the height of the top of the stacked film sheets.

3. The optical film laminating device according to claim 1, wherein A vacuum adsorption transition table for carrying the membrane transported by the adsorption jig is provided in the first workstation and the second workstation, or in the first workstation and the third workstation. The pre-alignment scanning mechanism also includes a second CCD camera for collecting the image of the membrane on the adsorption jig at one time. The ends of the first six-axis manipulator and the second six-axis manipulator are fixed with a membrane pick-up and placement jig located beside the adsorption jig and used to grab the membrane on the vacuum adsorption transition table. The membrane pick-up and placement jig is provided with multiple vacuum holes corresponding to the edges of the membrane. The adsorption jig has a number of vacuum suction cups. A second image sensor is provided between the membrane pick-up and placement jig and the adsorption jig.

4. The optical film laminating device according to claim 1, characterized in that, A Y-axis guide rail extending along the length direction of the working platform is provided in the main working position, and the flip platform assembly also includes a Z-axis bracket slidably set on the Y-axis guide rail and extending in the vertical direction, and an X-axis cross plate located on the upper part of the Z-axis bracket and extending in the width direction of the working platform. The vacuum adsorption platform is slidably set on the X-axis cross plate, and the Y-axis driving mechanism is connected to the Z-axis bracket to move the Z-axis bracket along the Y-axis guide rail. The R-axis driving mechanism is a servo motor connected to the X-axis cross plate to flip the X-axis cross plate and the vacuum adsorption platform in the vertical plane; the Z-axis driving mechanism is a cylinder or electric cylinder fixed on the X-axis cross plate and drives the vacuum adsorption platform to rise and fall in the vertical direction.

5. The optical film laminating device according to claim 4, wherein A linear guide rail extending in the vertical direction is arranged on the X-axis horizontal plate, and a sliding block slidably matched with the linear guide rail is arranged at the bottom of the vacuum adsorption platform.

6. The optical film laminating device according to claim 4, wherein, The film tearing mechanism further includes a jaw mounting frame and a gantry that straddles above the Y-axis guide rail and is fixedly connected to the working platform. The gantry includes two columns arranged oppositely and extending in the vertical direction, and an X-axis guide rail fixed at the tops of the two columns and extending in the width direction of the working platform. The opening and closing driving member is a cylinder mounted on the jaw mounting frame and used to drive the jaws to open and close. The pressing head is hinged to the jaw mounting frame. The rotating mechanism is a rotating motor rotatably connected to the jaw mounting frame. The XZ biaxial driving mechanism includes a first bracket slidably arranged on the X-axis guide rail, a horizontal driving member for driving the first bracket to slide axially along the X-axis guide rail, a second bracket slidably arranged on the first bracket, a vertical driving member for driving the second bracket to lift along the height direction of the first bracket. The jaw mounting frame is rotatably mounted on the second bracket, and the jaw mounting frame and the second bracket are in limit cooperation in the vertical direction.

7. The optical film laminating device according to claim 1, characterized in that, The roller fitting mechanism includes a lead screw received in the negative pressure cavity, a nut located in the negative pressure cavity and threadedly connected to the lead screw, a motor located outside the mesh box and driving the lead screw to rotate. The roller is rollingly installed on the upper surface of the nut, and a chute is provided on the inner wall of the mesh box. The edge of the nut is embedded in the chute and slidably cooperates with the inner wall of the mesh box.

8. The optical film laminating device according to claim 1, wherein, A corner cutting assembly is provided in the second working position or the third working position. The corner cutting assembly includes a waste film frame, a bracket fixed beside the waste film frame, a cantilever fixed at the top of the bracket and suspended above the waste film frame, and a pneumatic shear fixed at the end of the cantilever and corresponding to the top opening of the waste film frame.

9. The optical film laminating device according to claim 1, wherein A first reserved working position is provided between the loading mechanism and the unloading assembly in the first working position. A second reserved working position is provided between the loading mechanism in the second working position and the loading mechanism in the third working position. And a waste material bin for receiving waste materials is provided in the first working position, and a waste film box is provided in the main working position adjacent to the first working position.

10. The optical film laminating device according to claim 1, characterized in that, It further includes a dust-proof cover fixed on the working platform and covering the film sheet loading and unloading unit and the film tearing and pasting unit. A gas filtering device is provided at the top of the dust-proof cover.

Images