CN223071949U - Optical film laminating equipment with optimized optical performance - Google Patents

Abstract

An optical film laminating device for optimizing optical performance comprises at least an operating platform, a film loading and unloading unit and at least one set of film tearing and laminating units, wherein the operating platform is provided with a main working position and first, second and third working positions; the film loading and unloading unit comprises three loading and alignment scanning components, a unloading component, and first and second six-axis manipulators with adsorption fixtures at the ends, and the loading and alignment scanning components comprise a loading mechanism for accommodating the film and a pre-alignment scanning mechanism comprising a first image sensor; the film tearing and laminating unit comprises a flip stage assembly for receiving the film, a dry ultrasonic cleaning mechanism for removing dust from the film on the flip stage assembly, a film tearing mechanism for tearing off the protective film layer of the film on the flip stage assembly, a plasma cleaning machine for cleaning the film, a first CCD camera for collecting the image of the film on the flip stage assembly, and a laminating mechanism for receiving the film after tearing and rolling the film.

Description

Optical film laminating equipment with optimized optical performance

Technical Field

The utility model relates to the technical field of optical film lamination, in particular to optical film lamination equipment for optimizing optical performance.

Background

For VR products and other devices, it is often necessary to attach an optical film to the surface of the glass substrate to improve the optical properties of the product, thereby meeting the demands of product use. In the process of sticking the film on the surface of the substrate, the processes of feeding, product cleaning, film tearing, alignment, attaching, precision checking, discharging and the like are required to be carried out so as to ensure the stable and accurate lamination of the film on the surface of the substrate. At present, a structure of combining a vacuum flat plate and a net cage is mainly adopted in the industry to attach a plurality of layers of soft films, specifically, an AR film is firstly placed in the net cage to align the films with a positioning edge, meanwhile, the vacuum of the net cage is started, a QWP film (quarterwaveplate, a quarter wave plate) is placed on a turnover plate platform to align the QWP film with the positioning edge, the turnover plate vacuum is started, and the attachment is completed by pressing a start key. And (3) performing accuracy test after lamination, placing the AR film and the QWP film on a turnover plate platform, aligning with a positioning edge, then starting vacuum of the turnover plate, placing the POL film (High translucent polarizer, high semi-permeable polaroid) on a net cage, aligning with the positioning edge, starting vacuum of the net cage, and pressing a start key to finish lamination. And (3) performing accuracy inspection after lamination, placing the three films on a turnover plate platform and aligning with a positioning edge, starting turnover plate vacuum, placing the RP film on a net cage and aligning with the positioning edge, starting the net cage vacuum, pressing a start key to finish lamination, and performing accuracy inspection after lamination. Wherein, a plurality of holes with the size of 1mm are arranged on the vacuum flat plate, and the holes are uniformly distributed on the whole flat plate, and the laminating machine, the vacuum plasma cleaning machine and the OMM (Optical Measuring Machine ) are respectively independent and act separately.

However, the film pasting structure is a single machine, and only one pasting operation can be performed at a time, and for pasting the multi-layer film, multiple pasting operations are required to be separated, so that the pasting operation efficiency of the film is insufficient. In addition, the lamination precision of the film laminating structure is poor, and only the L-shaped para-film physical edge can be adopted, so that the yield of the optical performance test of the composite film finished product is only 40%, and the product yield is insufficient.

Disclosure of utility model

In view of the above, it is necessary to provide an optical film laminating apparatus with high film laminating accuracy, high yield and high working efficiency, which optimizes optical performance.

An optical film laminating apparatus for optimizing optical performance, comprising at least:

The working platform is provided with a main working position and an auxiliary working position, and the auxiliary working position comprises a first working position positioned at one side of the main working position, a second working position positioned at the other side of the main working position and a third working position;

The diaphragm feeding and discharging unit comprises three feeding and contraposition code scanning assemblies, a discharging assembly, a first six-axis mechanical arm and a second six-axis mechanical arm, wherein the three feeding and contraposition code scanning assemblies are arranged at each auxiliary working position in a one-to-one correspondence mode, the discharging assembly is arranged at the first working position, the first six-axis mechanical arm is arranged at the first working position, the second six-axis mechanical arm is arranged between the second working position and the third working position, the feeding and contraposition code scanning assemblies comprise a feeding mechanism and a pre-contraposition code scanning mechanism, the feeding mechanism is provided with a cavity for accommodating a diaphragm to be attached, the tail ends of the first six-axis mechanical arm and the second six-axis mechanical arm are respectively fixed with an adsorption jig for vacuum adsorption of the diaphragm in the cavity, and the pre-contraposition code scanning mechanism comprises a first image sensor for scanning labels on the diaphragm, and

The film tearing and pasting unit comprises a turnover carrying platform assembly for receiving the films, a dry ultrasonic cleaning mechanism for removing dust from the films on the turnover carrying platform assembly, a film tearing mechanism for tearing off the film protection film layer on the turnover carrying platform assembly, a plasma cleaning machine for cleaning the films, a first CCD camera for collecting the film images on the turnover carrying platform assembly, and a film pasting mechanism for receiving the films after film tearing and rolling and pasting the films;

the turnover carrying platform assembly comprises a vacuum adsorption platform for receiving and vacuum adsorbing the membrane removed by the adsorption jig, a Y-axis driving mechanism for driving the vacuum adsorption platform to move between a secondary working position and a main working position, an R-axis driving mechanism for driving the vacuum adsorption platform to rotate in a vertical plane so as to turn the membrane, and a Z-axis driving mechanism for driving the vacuum adsorption platform to move along the vertical direction;

The film tearing mechanism comprises a clamping jaw suspended above the vacuum adsorption platform and used for grabbing a protective film layer on the film, an opening and closing driving piece used for driving the clamping jaw to open and close, a pressure head arranged at the side of the clamping jaw and adjustable in angle relative to the clamping jaw, an XZ double-shaft driving mechanism used for driving the clamping jaw and the pressure head to move in a vertical plane, and a rotating mechanism used for driving the clamping jaw and the pressure head to rotate in the vertical plane;

The film pasting mechanism comprises a net cage with a negative pressure cavity, a net plate fixed at the top of the net cage and used for receiving a diaphragm which is overturned and unloaded by a vacuum adsorption platform, an XYZ three-axis driving mechanism used for driving the net cage to move in a three-dimensional space, a roller which is contained in the negative pressure cavity and is in rolling fit with the lower surface of the net plate, and a roller fitting mechanism used for driving the roller to move in the negative pressure cavity, wherein meshes of the net plate are communicated with the negative pressure cavity of the net cage, and the roller is in rolling fit with at least two layers of film layers between the net plate and the overturned vacuum adsorption platform.

In one embodiment, the feeding mechanism comprises a first support frame, a first Z-axis guide rail, a first support plate, a first Z-axis driving piece, a first material level sensor and a first material level sensor, wherein the first Z-axis guide rail is positioned on the first support frame and extends along the vertical direction, the first support plate is in sliding connection with the first Z-axis guide rail and is used for receiving stacked films to be attached, the first Z-axis driving piece is used for driving the first support plate to lift along the first Z-axis guide rail, the first material level sensor is fixed on the first support frame and is positioned above the first support plate, the first Z-axis guide rail and the first support plate jointly enclose the accommodating cavity, and the first material level sensor is electrically connected with the first Z-axis driving piece and is used for detecting the height of the stacked films;

The blanking assembly comprises a second support frame, a second Z-axis guide rail which is arranged on the second support frame and extends along the vertical direction, a second support plate which is in sliding connection with the second Z-axis guide rail and is used for stacking and bearing the laminated membrane, a second Z-axis driving piece which is used for driving the second support plate to lift along the second Z-axis guide rail, and a second material level sensor which is fixed on the second support frame and is arranged above the second support plate, wherein the second material level sensor is electrically connected with the second Z-axis driving piece and is used for detecting the height of the top of the stacked membrane.

In one embodiment, the vacuum adsorption transition platen for bearing the membrane transported by the adsorption jig is arranged in the first working position and the second working position or in the first working position and the third working position, the pre-alignment code scanning mechanism further comprises a second CCD camera for collecting the image of the membrane on the adsorption jig once, the membrane picking and placing jig located beside the adsorption jig and used for grabbing the membrane on the vacuum adsorption transition platen is fixed at the tail ends of the first six-axis mechanical arm and the second six-axis mechanical arm, a plurality of vacuum holes corresponding to the edges of the membrane are formed in the membrane picking and placing jig, a plurality of vacuum suction cups are arranged on the adsorption jig, and a second image sensor is arranged between the membrane picking and placing jig.

In one embodiment, a Y-axis guide rail extending along the length direction of the working platform is arranged in the main working position, the overturning platform assembly further comprises a Z-axis support which is arranged on the Y-axis guide rail in a sliding manner and extends along the vertical direction, an X-axis transverse plate which is arranged on the upper portion of the Z-axis support and extends along the width direction of the working platform, the vacuum adsorption platform is arranged on the X-axis transverse plate in a sliding manner, the Y-axis driving mechanism is in driving connection with the Z-axis support so as to enable the Z-axis support to move along the Y-axis guide rail, the R-axis driving mechanism is a servo motor which is in driving connection with the X-axis transverse plate so as to enable the X-axis transverse plate and the vacuum adsorption platform to overturn in the vertical plane, and the Z-axis driving mechanism is an air cylinder or an electric cylinder which is fixed on the X-axis transverse plate and drives the vacuum adsorption platform to lift along the vertical direction.

In one embodiment, the X-axis transverse plate is provided with a linear guide rail extending along the vertical direction, and the bottom of the vacuum adsorption platform is provided with a sliding block in sliding fit with the linear guide rail.

In one embodiment, the film tearing mechanism further comprises a clamping jaw mounting frame and a portal frame which is arranged above the Y-axis guide rail in a straddling manner and fixedly connected with the working platform, the portal frame comprises two upright posts which are oppositely arranged and extend along the vertical direction, an X-axis guide rail which is fixed at the tops of the two upright posts and extends along the width direction of the working platform, the opening and closing driving piece is an air cylinder which is arranged on the clamping jaw mounting frame and is used for driving the clamping jaws to open and close, the pressure head is hinged with the clamping jaw mounting frame, the rotating mechanism is a rotating motor which is rotationally connected with the clamping jaw mounting frame, the XZ double-shaft driving mechanism comprises a first support which is arranged on the X-axis guide rail in a sliding manner, a horizontal driving piece which drives the first support to axially slide along the X-axis guide rail, a second support which is arranged on the first support in a sliding manner, and a vertical driving piece which drives the second support to lift along the height direction of the first support, the clamping jaw mounting frame is rotationally arranged on the second support, and the clamping jaw mounting frame is in limit fit with the second support along the vertical direction.

In one embodiment, the roller attaching mechanism comprises a screw rod accommodated in the negative pressure cavity, a nut positioned in the negative pressure cavity and in threaded connection with the screw rod, and a motor positioned on the outer side of the net cage and used for driving the screw rod to rotate, wherein the roller is embedded on the upper surface of the nut in a rolling manner, a sliding groove is formed in the inner wall of the net cage, and the edge of the nut is embedded in the sliding groove and is in sliding fit with the inner wall of the net cage.

In one embodiment, a corner cutting assembly is arranged in the second working position or the third working position, and the corner cutting assembly comprises a waste film frame, a bracket fixed at the side of the waste film frame, a cantilever fixed at the top end of the bracket and suspended above the waste film frame, and a pneumatic shear fixed at the tail end of the cantilever and corresponding to the top opening of the waste film frame.

In one embodiment, a first reserved station is arranged between the feeding mechanism and the discharging assembly in the first working position, a second reserved station is arranged between the feeding mechanism in the second working position and the feeding mechanism in the third working position, a waste bin for containing waste is arranged in the first working position, and a waste film box is arranged in the main working position adjacent to the first working position.

In one embodiment, the optical film laminating device further comprises a dust cover which is fixed on the operation platform and covers the film feeding and discharging unit, the film tearing unit and the film laminating unit, and a gas filtering device is arranged at the top of the dust cover.

According to the optical film laminating equipment with optimized optical performance, the film to be laminated is automatically grabbed by the first six-axis mechanical arm and the second six-axis mechanical arm, the protective film layer on the surface of the film is removed by matching the overturning carrying platform assembly with the film tearing mechanism, rolling lamination of the film is realized by matching the vacuum adsorption platform with the rollers in the film laminating mechanism, the automatic lamination of the multi-layer film can be realized by only one-time feeding, the lamination efficiency of the film is improved without separating and laminating for many times, the detection of the film image is realized by the first CCD camera, the position of the film to be laminated is convenient to adjust in time, the lamination precision of the film is improved, and the yield of finished films is further improved.

Drawings

FIG. 1 is a schematic view of an optical film laminating apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a structure of a feeding and discharging unit of a membrane according to an embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a first six-axis manipulator and a loading/unloading handling module according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram illustrating a structure of an upper and lower loading and unloading handling module according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a pre-alignment code scanning mechanism according to an embodiment of the present utility model;

FIG. 6 is a schematic structural diagram of a feeding mechanism according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a corner cutting assembly according to one embodiment of the present utility model;

FIG. 8 is a schematic diagram of the main workplace portion in one embodiment of the utility model;

FIG. 9 is a schematic diagram of a film tearing mechanism according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a flipping stage assembly according to one embodiment of the utility model;

FIG. 11 is a schematic structural view of a film sticking mechanism according to an embodiment of the present utility model;

Fig. 12 is a schematic structural view of a roller attaching mechanism according to an embodiment of the present utility model.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

Referring to fig. 1-11, the utility model discloses an optical film laminating device with high film laminating accuracy, high yield and high operation efficiency for optimizing optical performance, which at least comprises an operation platform 100, a film feeding and discharging unit 200 and at least one group of film tearing and laminating units 300, wherein the operation platform 100 is provided with a main working position and a secondary working position, and the secondary working position comprises a first working position positioned at one side of the main working position, a second working position positioned at the other side of the main working position and a third working position. The film feeding and discharging unit 200 and the film tearing and sticking unit 300 are arranged on the operation platform 100, a cabinet 110 is arranged below the operation platform 100, and a control circuit board and a power supply device for controlling the operation of the power consumption components in the film feeding and discharging unit 200 and the film tearing and sticking unit 300 are accommodated in the cabinet 110. The diaphragm feeding and discharging unit 200 comprises three feeding and alignment code scanning assemblies, a discharging assembly 210, a first six-axis manipulator 220 and a second six-axis manipulator 230, wherein the three feeding and alignment code scanning assemblies are arranged at each pair of working positions in a one-to-one correspondence mode, the discharging assembly 210 is arranged at the first working position, the first six-axis manipulator 220 is arranged at the first working position, and the second six-axis manipulator 230 is arranged between the second working position and the third working position. That is, the optical film laminating apparatus of this embodiment is used for realizing the material loading of three kinds of diaphragms simultaneously to for the laminating operation of three kinds of diaphragms provides the raw materials, because the laminating operation of two parts diaphragms is accomplished to the pad pasting in-process once, and the diaphragm of second workstation material loading and the diaphragm of third workstation material loading need not to snatch the operation simultaneously, consequently, second workstation and third workstation sharing a six mechanical arm 230 of second can, can simplify the equipment structure, reduction in production cost of equipment. The feeding and counterpoint code scanning component comprises a feeding mechanism 240 and a pre-counterpoint code scanning mechanism, the feeding mechanism 240 is provided with a cavity for accommodating a film to be laminated, the tail ends of the first six-axis mechanical arm 220 and the second six-axis mechanical arm 230 are respectively fixed with an adsorption jig 221 for vacuum adsorption of the film in the cavity, and the pre-counterpoint code scanning mechanism comprises a first image sensor 250 for scanning a label on the film. The first six-axis manipulator 220 and the second six-axis manipulator 230 are six-axis manipulators, 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 rotation joint, and 6 servo motors for driving the six joints to act, so that the tail end of the six-axis manipulator can realize six-freedom-degree action, in this embodiment, the first six-axis manipulator 220 and the second six-axis manipulator 230 can be commercially available six-axis manipulators with any size suitable for the optical film laminating device of this scheme, and the specific structure and the working principle thereof are not repeated here.

In this embodiment, when the film is fed, a protective film layer is disposed on the surface of the film, and a label is attached to the protective film layer, and the first image sensor 250 scans the label, so that the attached film can be counted. The film tearing and pasting unit 300 comprises a turnover carrying platform assembly 310 for receiving films, a dry ultrasonic cleaning mechanism 320 for removing dust from the films on the turnover carrying platform assembly 310, a film tearing mechanism 330 for tearing off film protection layers on the turnover carrying platform assembly 310, a plasma cleaning machine 340 for cleaning the films, a first CCD camera 350 for collecting images of the films on the turnover carrying platform assembly 310, and a film pasting mechanism 360 for receiving the films after film tearing and pasting the films in a rolling manner. Wherein, the overturning platform assembly 310 cooperates with the film tearing mechanism 330 on one hand to tear off the protective film layer on the surface of the film, and on the other hand, the overturning platform assembly 310 cooperates with the film pasting mechanism 360 to realize the positioning of the film to be pasted so as to paste the film. The dry ultrasonic cleaning mechanism 320 is used for cleaning the membrane before the membrane is not torn at one time to avoid the pollution of dust particles and the like on the protective membrane layer to the membrane tearing mechanism 330, and the plasma cleaning machine 340 is used for cleaning the membrane after the membrane is torn to ensure the surface of the membrane to avoid the condition that the joint part of the membrane is uneven so as to improve the joint quality of the membrane. The first CCD camera 350 is electrically connected to the driving structure in the overturning platform assembly 310, so as to feedback adjust the position and angle of the membrane on the overturning platform assembly 310, so that the two membranes to be attached can be aligned accurately.

The turnover stage assembly 310 includes a vacuum suction stage 311 for receiving and vacuum sucking the membrane discharged from the suction jig 221, a Y-axis driving mechanism for driving the vacuum suction stage 311 to move between the sub-working position and the main working position, an R-axis driving mechanism 312 for driving the vacuum suction stage 311 to rotate in a vertical plane so as to turn the membrane, and a Z-axis driving mechanism 313 for driving the vacuum suction stage 311 to move in a 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., 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 for adjusting the position of the membrane in the YZ plane, and the R-axis driving mechanism 312 is used for adjusting the angle of the membrane, so that the membrane can be turned over and attached to another membrane, and the two membranes can be aligned. The film tearing mechanism 330 comprises a clamping jaw 331 which is suspended above the vacuum adsorption platform 311 and used for grabbing a protective film layer on a film, an opening and closing driving piece used for driving the clamping jaw 331 to open and close, a pressure head 332 which is arranged beside the clamping jaw 331 and is adjustable in angle relative to the clamping jaw 331, an XZ double-shaft driving mechanism used for driving the clamping jaw 331 and the pressure head 332 to move in a vertical plane, and a rotating mechanism 333 used for driving the clamping jaw 331 and the pressure head 332 to rotate in the vertical plane. The opening and closing driving piece is used for opening or closing the clamping jaw 331 so that the clamping jaw 331 can grip the protective film layer on the membrane or release the protective film layer on the membrane, and the XZ double-shaft driving mechanism is used for adjusting the horizontal position and the vertical position of the clamping jaw 331 so that the clamping jaw 331 can lift up while gripping the protective film layer and pull the protective film layer along one side so as to tear the protective film layer from the membrane. The pressure head 332 is used for pressing the diaphragm in the process of holding and tearing away the protective film layer by the holding jaw 331, realizes the location to the diaphragm to avoid the diaphragm to lift up along with the protective film layer under the drive of holding jaw 331, guarantee the normal clear of dyestripping operation. The rotation mechanism 333 is used for adjusting the relative position between the clamping jaw 331 and the pressing head 332, so that the pressing head 332 rotates to one side of the film tearing portion on the clamping jaw 331, so that the pressing head 332 presses the film tearing portion on the film, and the film is prevented from being lifted. The film pasting mechanism 360 comprises a net cage 361 with a negative pressure cavity, a screen plate 362 fixed at the top of the net cage 361 and used for receiving films turned over and discharged by the vacuum adsorption platform 311, an XYZ triaxial driving mechanism 370 used for driving the net cage 361 to move in a three-dimensional space, a roller 363 accommodated in the negative pressure cavity and in rolling fit with the lower surface of the screen plate 362, and a roller pasting mechanism used for driving the roller 363 to move in the negative pressure cavity, wherein meshes of the screen plate 362 are communicated with the negative pressure cavity of the net cage 361, and the roller 363 is in rolling fit with at least two layers of films between the screen plate 362 and the turned vacuum adsorption platform 311.

In the film pasting operation process, first, a first film to be pasted is sequentially fed from a feeding mechanism 240 at a first working position, a first six-axis mechanical arm 220 grabs, sweeps codes, a dry ultrasonic cleaning mechanism 320 removes dust, tears films, and a first CCD camera 350 detects, and the first film after film tearing is placed on a vacuum adsorption platform 311. Then, the vacuum adsorption platform 311 moves to the net cage 361 under the driving of the Y-axis driving mechanism, the R-axis driving mechanism 312 drives the vacuum adsorption platform 311 to turn over, so that the membrane on the vacuum adsorption platform 311 is parallel to the upper surface of the net plate 362, and then the Z-axis driving mechanism 313 controls the vacuum adsorption platform 311 to press down, so that the first membrane is tightly attached to the upper surface of the net plate 362 under the action of negative pressure in the net cage 361, and meanwhile, the negative pressure of the vacuum adsorption platform 311 is disconnected, so that the first membrane 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 turnover stage assembly 310 leaves the net cage 361, and the setting of the first membrane on the net cage 361 is realized.

Subsequently, the feeding mechanism 240 at the second working position sequentially performs feeding, grabbing and stacking by the second six-axis mechanical arm 230, dedusting by the dry ultrasonic cleaning mechanism 320, film tearing and detection by the first CCD camera 350, the second film after film tearing is placed on the vacuum adsorption platform 311, the vacuum adsorption platform 311 is driven by the Y-axis driving mechanism to move to the net cage 361, the R-axis driving mechanism 312 drives the vacuum adsorption platform 311 to overturn, the second film on the vacuum adsorption platform 311 is parallel to the upper surface of the screen plate 362, then the Z-axis driving mechanism 313 controls the vacuum adsorption platform 311 to press downwards, so that the second film is attached to the first film on the screen plate 362, the negative pressure of the vacuum adsorption platform 311 is disconnected, and the first film and the second film are attached under the combined action of the screen plate 362 and the vacuum adsorption platform 311 (not fully attached at this time). And then, the roller is controlled by the roller laminating mechanism to move in the net cage 361, so that the roller moves relative to the first membrane and is in rolling contact with the first membrane, and each part on the first membrane is firmly laminated with the second membrane, so that laminating operation of the first membrane and the second membrane is realized.

Finally, the third membrane to be attached is sequentially fed by the feeding mechanism 240 at the third working position, the second six-axis mechanical arm 230 grabs, sweeps the code, the dry ultrasonic cleaning mechanism 320 removes dust, tears the membrane, and detects by the first CCD camera 350, the third membrane after tearing the membrane is placed on the vacuum adsorption platform 311, the vacuum adsorption platform 311 is driven by the Y-axis driving mechanism to move to the net cage 361, the R-axis driving mechanism 312 drives the vacuum adsorption platform 311 to overturn, so that the third membrane on the vacuum adsorption platform 311 is parallel to the upper surface of the screen plate 362, then the Z-axis driving mechanism 313 controls the vacuum adsorption platform 311 to press down, so that the third membrane is attached to the upper surface of the membrane structure (namely the upper surface of the original second membrane) after the last attachment of the screen plate 362, and meanwhile, the negative pressure of the vacuum adsorption platform 311 is disconnected, and the third membrane is attached to the membrane structure under the combined action of the screen plate 362 and the vacuum adsorption platform 311 (at this time, the third membrane is not completely attached). Then, the roller is controlled by the roller attaching mechanism to move in the net cage 361, so that the roller moves relative to the membrane structure and is in rolling contact with the membrane structure, and each part of the membrane structure is firmly attached to the third membrane, so that the attaching operation of the membrane structure and the third membrane is realized, namely, the attaching operation of the first membrane, the second membrane and the third membrane is completed.

In addition, during actual operation, the second membrane after material taking may be directly placed on the mesh plate 362 of the mesh box 361, then the second membrane is subjected to dust removal, membrane tearing and cleaning operations, then the processed first membrane is covered on the second membrane on the mesh plate 362 and bonded, the bonded membrane is adsorbed on the vacuum adsorption platform 311, then the third membrane is directly placed on the mesh plate 362 of the mesh box 361, the third membrane is subjected to dust removal, membrane tearing and cleaning operations, and then the bonded first membrane and second membrane on the vacuum adsorption platform 311 are covered on the third membrane on the mesh plate 362, and further membrane bonding operations are performed.

According to the optical film laminating equipment with optimized optical performance, the film to be laminated is automatically grabbed by the first six-axis mechanical arm 220 and the second six-axis mechanical arm 230, the protective film layer on the surface of the film is removed by matching the overturning carrying platform assembly 310 with the film tearing mechanism 330, rolling lamination of the film is realized by matching the vacuum adsorption platform 311 with the rollers in the film laminating mechanism 360, the automatic lamination of the multilayer film can be realized by only one-time feeding without separating multiple lamination, the lamination efficiency of the film is improved, the detection of the film image is realized by the first CCD camera 350, the position of the film to be laminated is conveniently and timely adjusted, the lamination precision of the film is improved, and the yield of finished films is further improved.

In an embodiment, the optical film laminating apparatus further includes a dust cover fixed on the working platform 100 and covering the film feeding and discharging unit 200 and the film tearing and laminating unit 300, and a gas filtering device is disposed at the top of the dust cover. Preferably, the dust cover is made of transparent material, for example, the dust cover is formed by bonding acrylic plates, or the dust cover is made of PC, PMMA or PET materials, so that workers can observe the lamination condition of the membrane during operation. In addition, the dust cover is provided with openable protective doors corresponding to the first working position, the second working position and the third working position, so that the operators can timely add and supplement the films according to the material condition in the feeding mechanism 240. In the embodiment, the dust cover is used for separating the optical film laminating equipment from the external environment so as to reduce the influence of dust impurities in the environment on the cleanliness of the surface of the film, and the number of times of feeding and discharging is reduced by arranging the plurality of feeding mechanisms 240 in the dust cover and laminating the multi-layer film, so that the risk of introducing external dust or foreign matters can be reduced, the problem of excessive concave-convex points at the laminating position caused by the foreign matters is avoided, the laminating operation yield is improved, and the film laminating cost is reduced. Through set up gas filter equipment at the top of dust cover, when carrying out gas exchange, accelerating the heat dissipation in the dust cover inside and outside the dust cover, can avoid the dust impurity in the external environment to get into the inner chamber of dust cover. The gas filtering device can be one of a primary paper frame filter, a medium-efficiency bag filter, a high-efficiency filter with a baffle plate and a V-shaped close-pleated filter, and can also be other gas filters in other commercial models.

In addition, in this embodiment, a first reserved station is disposed between the feeding mechanism 240 and the discharging component 210 in the first working position, a second reserved station is disposed between the feeding mechanism 240 in the second working position and the feeding mechanism 240 in the third working position, a waste bin 260 for accommodating waste is disposed in the first working position, and a waste film box 270 is disposed in the main working position adjacent to the first working position. The first reserving station and the second reserving station can be respectively provided with a feeding mechanism 240, operations such as grabbing, code scanning, dust removing, film tearing, visual inspection and the like of the films in the first reserving station are performed by the same set of equipment with operations such as grabbing, code scanning, dust removing, film tearing, visual inspection and the like of the films in the first working station, and likewise, operations such as grabbing, code scanning, dust removing, film tearing, visual inspection and the like of the films in the second reserving station are performed by the same set of equipment with operations such as grabbing, code scanning, dust removing, film tearing, visual inspection and the like of the films in the second working station or the third working station, and film laminating operations can refer to the three-layer film laminating operation process and only need laminating the films layer by layer. Thus, the optical film laminating equipment of the embodiment can also realize laminating operation of four-layer films or five-layer films, thereby expanding the application range of the optical film laminating equipment. The waste bin 260 is used for accommodating the torn protective film, and the waste film box 270 is used for accommodating the product with failed film pasting so as to recycle and intensively process the waste and the failed product.

Referring to fig. 6, the feeding mechanism 240 includes a first support 241, a first Z-axis rail 242 disposed on the first support 241 and extending along a vertical direction, a first support plate 243 slidably connected with the first Z-axis rail 242 and used for receiving stacked films to be bonded, a first Z-axis driving member 244 for driving the first support plate 243 to lift along the first Z-axis rail 242, a first level sensor 245 fixed on the first support 241 and disposed above the first support plate 243, wherein the first Z-axis rail 242 and the first support plate 243 together enclose a cavity, and the first level sensor 245 is electrically connected with the first Z-axis driving member 244 and used for detecting a height of the stacked films. Preferably, the first Z-axis driving member 244 is a cylinder or an electric cylinder disposed at the bottom of the first support plate 243, the driving end of the first Z-axis driving member 244 is fixedly connected with the first support plate 243 to adjust the height of the first support plate 243, and the first 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 level sensor 245 is electrically connected with a solenoid valve for controlling on/off of a gas path of the cylinder. By setting the first level sensor 245, the first level sensor 245 detects the height of the stacked membrane (the position of the top of the stacked membrane) in real time, so that the first Z-axis driving member 244 adjusts the height of the first supporting plate 243 in real time according to the signal fed back by the first level sensor 245, so as to facilitate controlling the material taking height of the membrane in the feeding mechanism 240 to be consistent all the time. The blanking assembly 210 comprises a second support frame, a second Z-axis guide rail which is arranged on the second support frame and extends along the vertical direction, a second support plate which is in sliding connection with the second Z-axis guide rail and is used for stacking and bearing the laminated membrane, a second Z-axis driving piece which is used for driving the second support plate to lift along the second Z-axis guide rail, and a second material level sensor which is fixed on the second support frame and is arranged above the second support plate, wherein the second material level sensor is electrically connected with the second Z-axis driving piece and is used for detecting the height of the top of the stacked membrane. The structure of the blanking assembly 210 in this embodiment is the same as that of the feeding mechanism 240, and the main difference between the two is that the carried films are different, the former carries the laminated multi-layer film, and the latter carries the single-layer film to be laminated. Similarly, the second level sensor detects the height of the stacked membrane (the position of the top of the stacked membrane) in real time, so that the second Z-axis driving member adjusts the height of the second support plate in real time according to the signal fed back by the second level sensor, so as to facilitate controlling the blanking height of the membrane in the blanking assembly 210 to be consistent all the time.

Referring to fig. 2-4, in an embodiment, vacuum adsorption transition platen 280 for carrying the membrane transported by the adsorption jig 221 is disposed in the first working position and the second working position, or in the first working position and the third working position, and the pre-alignment code scanning mechanism further includes a second CCD camera 290 for collecting the image of the membrane on the adsorption jig 221 at a time. The ends of the first six-axis mechanical arm 220 and the second six-axis mechanical arm 230 are respectively fixed with a membrane picking and placing jig 222 which is positioned beside the adsorption jig 221 and used for grabbing the membrane on the vacuum adsorption transition platen 280, a plurality of vacuum holes corresponding to the edges of the membrane are formed in the membrane picking and placing jig 222, a plurality of vacuum chucks are arranged on the adsorption jig 221, and a second image sensor 223 is arranged between the membrane picking and placing 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 form an up-down feeding and conveying module, and the second CCD camera 290 and the first image sensor 250 are mounted on the same bracket. In this embodiment, the vacuum adsorption transition platen 280 is actually a transfer table for transferring the film, so as to adsorb and smooth the grabbed film, and ensure the flatness of the film. Specifically, when the first six-axis manipulator 220 or the second six-axis manipulator 230 grabs the membrane, the vacuum chuck on the adsorption jig 221 firstly sucks the membrane in the feeding mechanism 240, and after the second CCD camera 290 collects the membrane image on the adsorption jig 221, the form of the first six-axis manipulator or the second six-axis manipulator 230 is controlled and adjusted so as to adjust the relative position between the adsorption jig 221 and the vacuum adsorption transition platen 280, so that the membrane on the adsorption jig 221 can be accurately placed on the vacuum adsorption transition platen 280, and the pre-positioning of the membrane is realized. After the membrane is placed on the vacuum adsorption transition platen 280, the membrane is adsorbed on the vacuum adsorption transition platen 280 under the action of negative pressure and flattened, and then the membrane is adsorbed and grabbed by the membrane picking and placing jig 222 so as to further transfer the membrane onto the vacuum adsorption platform 311. The second image sensor 223 is configured to collect an image of the membrane on the vacuum adsorption transition platen 280 after the membrane is placed on the vacuum adsorption transition platen 280 by the adsorption jig 221, so as to further adjust the configuration of the first six-axis manipulator 220 or the second six-axis manipulator 230, so that the membrane picking and placing jig 222 can accurately pick the membrane. In this embodiment, through setting up a plurality of vacuum holes at the edge of getting and putting diaphragm tool 222, can prevent that the vacuum that receives because of diaphragm central point put is too big, and then the vacuum adsorption power that arouses makes thin and soft diaphragm in laminating in-process roughness influenced problem to reduce the wave line that the diaphragm laminating process produced, avoid the finished product after the diaphragm laminating to appear the ghost shadow or cause the user to appear dizziness when using and feel, in order to promote user's use experience. Through experiments, the film taking and placing jig 222 adopting the scheme has the advantages that the ripple-free rate of film lamination and the yield of optical performance test reach 100%.

The first CCD camera 350 and the second CCD camera 290 are identical in structure, and the structure of the second CCD camera 290 is described herein in connection with the pre-alignment code scanning mechanism. Specifically, referring to fig. 5, the second CCD camera 290 includes a camera 291, a lens 292 disposed above the camera 291 and fixedly connected to the camera 291, and a light source 293 disposed above the lens 292 and mounted on the lens 292, wherein the light source 293 is used for improving the light condition of the surface of the object to be image-captured so as to capture a clear image, the camera 291 is used for capturing image information, and the lens 292 is used for improving the light condition entering the capturing area of the camera 291 so as 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 along the X-axis direction, and a frame for mounting the linear motor, where the first image sensor 250 is fixed on the frame, and the first image sensor 250 is a CMOS image sensor.

Referring to fig. 8 and 10, a Y-axis guide rail 314 extending along the length direction of the working platform 100 is disposed in the main working position, the turnover stage assembly 310 further includes a Z-axis bracket 315 slidably disposed on the Y-axis guide rail 314 and extending along the vertical direction, an X-axis transverse plate 316 disposed on the upper portion of the Z-axis bracket 315 and extending along the width direction of the working platform 100, the vacuum suction platform 311 is slidably disposed on the X-axis transverse plate 316, a Y-axis driving mechanism is drivingly connected with the Z-axis bracket 315 to move the Z-axis bracket 315 along the Y-axis guide rail 314, the R-axis driving mechanism 312 is a servo motor drivingly connected with the X-axis transverse plate 316 to turn the X-axis transverse plate 316 and the vacuum suction platform 311 in the vertical plane, and the Z-axis driving mechanism 313 is an air cylinder or an electric cylinder fixed on the X-axis transverse plate 316 and driving the vacuum suction platform 311 to lift in the vertical direction. Further, a plurality of adsorption holes are formed in the vacuum adsorption platform 311, a sealing ring is arranged 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 combining a motor with a screw nut. In the process of film tearing and film lamination, the Y-axis driving mechanism adjusts the vacuum adsorption platform 311 to move along the Y-axis so that the vacuum adsorption platform 311 is close to the film tearing mechanism 330 or the net cage 361, the R-axis driving mechanism 312 adjusts the rotation angle of the vacuum adsorption platform 311 so that the film can be covered on the net plate 362, and the Z-axis driving mechanism 313 is used for laminating the film on the vacuum adsorption platform 311 with the film on the net plate 362 to realize the positioning of the film. Further preferably, the X-axis transverse plate 316 is provided with a linear guide rail 317 extending along a vertical direction, the bottom of the vacuum adsorption platform 311 is provided with a sliding block 318 in sliding fit with the linear guide rail 317, and a path along which the vacuum adsorption platform 311 ascends and descends along the Z-axis direction is defined through sliding fit between the linear guide rail 317 and the sliding block 318, so that the vacuum adsorption platform 311 is prevented from being deviated in the ascending and descending process, and two layers of films on the screen plate 362 are ensured to be aligned.

The dry type ultrasonic cleaning mechanism 320 used in this embodiment is a common USC cleaning machine in the market, and the dust removing head is provided with an ultrasonic generating cavity and vacuum adsorption cavities located at two sides of the ultrasonic generating cavity, after dust particles adhere to the surface of the membrane under the action of the adsorption layer, the vacuum cavities are used for adsorbing the dust particles, when the dust particles are separated from the surface of the membrane, the dust particles are driven by the reflection of ultrasonic waves, and the moving dust particles are instantly sucked by the negative pressure in the vacuum adsorption cavities, so that the effect of cleaning the dust particles on the surface of the membrane is achieved.

Referring to fig. 8 and 9, the film tearing mechanism 330 further includes a jaw mounting frame and a portal frame 334 that is straddled above the Y-axis guide rail 314 and is fixedly connected with the working platform 100, the portal frame 334 includes two upright posts that are oppositely disposed and extend along a vertical direction, an X-axis guide rail that is fixed at the top of the two upright posts and extends along a width direction of the working platform 100, an opening and closing driving member is a cylinder that is mounted on the jaw mounting frame and is used for driving the jaw 331 to open and close, the pressing head 332 is hinged with the jaw mounting frame, the rotating mechanism 333 is a rotating motor that is rotationally connected with the jaw mounting frame, the XZ dual-axis driving mechanism includes a first bracket 335 that is slidably disposed on the X-axis guide rail, a horizontal driving member 336 that drives the first bracket 335 to axially slide along the X-axis guide rail, a vertical driving member 338 that slides and is disposed on the first bracket 335, and a vertical driving member 338 that drives the second bracket 337 to lift along a height direction of the first bracket 335, the jaw mounting frame 331 is rotationally mounted on the second bracket 337, and the jaw mounting frame 331 is in limit fit with the second bracket 337 along the vertical direction. Further preferably, the hinge connection part of the pressure head 332 and the mounting frame of the clamping jaw 331 is further provided with a spring, and the height of the lowest point on the pressure head 332 is lower than the height of the lowest point on the clamping jaw 331, so that before the clamping jaw 331 contacts with the protective film layer on the film, the pressure head 332 is abutted against the film, the spring is stretched along with the further descent of the clamping jaw 331, the pressure head 332 is still abutted against the film until the clamping jaw 331 contacts with the protective film layer and catches the protective film layer, the spring resets and the pressure head 332 leaves the film, and in the process, the pressure head 332 continuously keeps abutting against the film to ensure the reliability of limiting the film in the film tearing process. In this embodiment, the XZ dual-shaft driving mechanism and the rotating mechanism 333 are matched to grasp and tear the protective film layer by the clamping jaw 331, so as to smoothly take down the protective film layer from the membrane.

Referring to fig. 11 and 12, in an embodiment, the roller attaching mechanism includes a screw rod 364 accommodated in the negative pressure cavity, a nut 365 located in the negative pressure cavity and in threaded connection with the screw rod 364, a motor 366 located at the outer side of the cage 361 and driving the screw rod 364 to rotate, the roller 363 is embedded on the upper surface of the nut 365 in a rolling manner, a chute is formed in the inner wall of the cage, and the edge of the nut 365 is embedded in the chute and is in sliding fit with the inner wall of the cage, so as to limit the nut and prevent the nut from rotating relative to the screw rod. Further, the upper surface of the nut 365 is provided with an arc groove, the arc groove is in a major arc structure (i.e. the central angle corresponding to the arc groove is greater than 180 °), and a plurality of rollers 363 are arranged in the arc groove in a side-by-side rolling manner, so that the rollers 363 can be in rolling contact with each part on the lower surface of the screen 362 in the process of moving the nut 365 relative to the lower surface of the screen 362, thereby ensuring the rolling laminating effect on each part on the two layers of films. The surface of the roller 363 is coated with silica gel, and the Shore hardness of the silica gel is 65A, so that the roller has the characteristics of static electricity prevention, adhesion prevention and the like. In addition, the XYZ three-axis driving mechanism 370 for driving the cage 361 to move in the three-dimensional space comprises a support platform slidably disposed on the Y-axis guide rail, a linear motor for 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 at the bottom of the mounting table, an adjusting screw rod penetrating through the adjusting nut and connected with the adjusting nut in a threaded manner and extending along the X-axis direction, a driving motor fixed on the support platform and used for driving the adjusting screw rod to rotate, and a lifting cylinder fixed on the upper surface of the mounting table and used for lifting the cage 361, so that the cage 361 can move in the three-dimensional space through the linear motor, the driving motor and the lifting cylinder, so that the net plate 362 can accurately support the membrane.

Referring to fig. 1 and 7, a corner cutting assembly 380 is disposed in the second working position or the third working position, and 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 end of the bracket 382 and suspended above the waste film frame 381, and a pneumatic scissors 384 fixed at the end of the cantilever 383 and corresponding to the top opening of the waste film frame 381. After the membrane is taken, the corner shearing operation is required to be performed on the membrane, so that the shape of the membrane meets the fitting requirement, sharp corners at the edge of the membrane are sheared off through the pneumatic shears 384, and sheared membrane corners are collected through the waste membrane frame 381, so that the collection difficulty of waste membranes is reduced.

Adopt the optical film laminating equipment of optimizing optical property of this scheme, snatch a plurality of diaphragms simultaneously through first six mechanical arms 220 and second six mechanical arms 230, realize carousel formula and prepare the auxiliary material, reduce laminating beat, time that laminating (i.e. laminating three diaphragms together) is less than 30s for 2 times. The first CCD camera 350 and the second CCD camera 290 are used for aligning the membrane, so that the horizontal displacement error of the membrane is within 0+/-0.15 mm, the angle error is within 0+/-0.15 DEG, the once-attached dimensional accuracy yield is 98%, the dimensional accuracy yield after unqualified products are removed is 99.9%, and the AOI (Automatic Optical Inspection, automatic optical detection) misjudgment rate is 0.1%.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. An optical film laminating apparatus for optimizing optical performance, comprising at least:

The working platform is provided with a main working position and an auxiliary working position, and the auxiliary working position comprises a first working position positioned at one side of the main working position, a second working position positioned at the other side of the main working position and a third working position;

The diaphragm feeding and discharging unit comprises three feeding and contraposition code scanning assemblies, a discharging assembly, a first six-axis mechanical arm and a second six-axis mechanical arm, wherein the three feeding and contraposition code scanning assemblies are arranged at each auxiliary working position in a one-to-one correspondence mode, the discharging assembly is arranged at the first working position, the first six-axis mechanical arm is arranged at the first working position, the second six-axis mechanical arm is arranged between the second working position and the third working position, the feeding and contraposition code scanning assemblies comprise a feeding mechanism and a pre-contraposition code scanning mechanism, the feeding mechanism is provided with a cavity for accommodating a diaphragm to be attached, the tail ends of the first six-axis mechanical arm and the second six-axis mechanical arm are respectively fixed with an adsorption jig for vacuum adsorption of the diaphragm in the cavity, and the pre-contraposition code scanning mechanism comprises a first image sensor for scanning labels on the diaphragm, and

The film tearing and pasting unit comprises a turnover carrying platform assembly for receiving the films, a dry ultrasonic cleaning mechanism for removing dust from the films on the turnover carrying platform assembly, a film tearing mechanism for tearing off the film protection film layer on the turnover carrying platform assembly, a plasma cleaning machine for cleaning the films, a first CCD camera for collecting the film images on the turnover carrying platform assembly, and a film pasting mechanism for receiving the films after film tearing and rolling and pasting the films;

the turnover carrying platform assembly comprises a vacuum adsorption platform for receiving and vacuum adsorbing the membrane removed by the adsorption jig, a Y-axis driving mechanism for driving the vacuum adsorption platform to move between a secondary working position and a main working position, an R-axis driving mechanism for driving the vacuum adsorption platform to rotate in a vertical plane so as to turn the membrane, and a Z-axis driving mechanism for driving the vacuum adsorption platform to move along the vertical direction;

The film tearing mechanism comprises a clamping jaw suspended above the vacuum adsorption platform and used for grabbing a protective film layer on the film, an opening and closing driving piece used for driving the clamping jaw to open and close, a pressure head arranged at the side of the clamping jaw and adjustable in angle relative to the clamping jaw, an XZ double-shaft driving mechanism used for driving the clamping jaw and the pressure head to move in a vertical plane, and a rotating mechanism used for driving the clamping jaw and the pressure head to rotate in the vertical plane;

The film pasting mechanism comprises a net cage with a negative pressure cavity, a net plate fixed at the top of the net cage and used for receiving a diaphragm which is overturned and unloaded by a vacuum adsorption platform, an XYZ three-axis driving mechanism used for driving the net cage to move in a three-dimensional space, a roller which is contained in the negative pressure cavity and is in rolling fit with the lower surface of the net plate, and a roller fitting mechanism used for driving the roller to move in the negative pressure cavity, wherein meshes of the net plate are communicated with the negative pressure cavity of the net cage, and the roller is in rolling fit with at least two layers of film layers between the net plate and the overturned vacuum adsorption platform.

2. The optical film laminating equipment according to claim 1, wherein the feeding mechanism comprises a first support frame, a first Z-axis guide rail which is positioned on the first support frame and extends along the vertical direction, a first support plate which is in sliding connection with the first Z-axis guide rail and is used for receiving stacked films to be laminated, a first Z-axis driving piece which is used for driving the first support plate to lift along the first Z-axis guide rail, and a first material level sensor which is fixed on the first support frame and is positioned above the first support plate, wherein the first Z-axis guide rail and the first support plate jointly enclose the accommodating cavity, and the first material level sensor is electrically connected with the first Z-axis driving piece and is used for detecting the height of the stacked films;

The blanking assembly comprises a second support frame, a second Z-axis guide rail which is arranged on the second support frame and extends along the vertical direction, a second support plate which is in sliding connection with the second Z-axis guide rail and is used for stacking and bearing the laminated membrane, a second Z-axis driving piece which is used for driving the second support plate to lift along the second Z-axis guide rail, and a second material level sensor which is fixed on the second support frame and is arranged above the second support plate, wherein the second material level sensor is electrically connected with the second Z-axis driving piece and is used for detecting the height of the top of the stacked membrane.

3. The optical film laminating equipment according to claim 1, wherein vacuum adsorption transition tables for bearing the film transported by the adsorption jig are arranged in the first working position and the second working position or in the first working position and the third working position, the pre-alignment code scanning mechanism further comprises a second CCD camera for collecting the film image on the adsorption jig once, the tail ends of the first six-axis mechanical arm and the second six-axis mechanical arm are both fixed with a film picking and placing jig positioned beside the adsorption jig and used for grabbing the film on the vacuum adsorption transition tables, a plurality of vacuum holes corresponding to the edges of the film are formed in the film picking and placing jig, a plurality of vacuum sucking discs are arranged on the adsorption jig, and a second image sensor is arranged between the film picking and placing jig.

4. The optical film laminating equipment according to claim 1, wherein a Y-axis guide rail extending along the length direction of the working platform is arranged in the main working position, the overturning platform assembly further comprises a Z-axis support arranged on the Y-axis guide rail in a sliding manner and extending along the vertical direction, an X-axis transverse plate arranged on the upper portion of the Z-axis support and extending along the width direction of the working platform, the vacuum adsorption platform is arranged on the X-axis transverse plate in a sliding manner, the Y-axis driving mechanism is in driving connection with the Z-axis support to enable the Z-axis support to move along the Y-axis guide rail, the R-axis driving mechanism is a servo motor in driving connection with the X-axis transverse plate to enable the X-axis transverse plate and the vacuum adsorption platform to overturn in a vertical plane, and the Z-axis driving mechanism is an air cylinder or an electric cylinder fixed on the X-axis transverse plate and driving the vacuum adsorption platform to lift in the vertical direction.

5. The optical film laminating apparatus according to claim 4, wherein a linear guide rail extending in a vertical direction is provided on the X-axis cross plate, and a slider slidably fitted with the linear guide rail is provided at a bottom of the vacuum suction stage.

6. The optical film laminating device according to claim 4, wherein the film tearing mechanism further comprises a clamping jaw mounting frame and a portal frame which is arranged above the Y-axis guide rail in a straddling manner and fixedly connected with the working platform, the portal frame comprises two upright posts which are oppositely arranged and extend in the vertical direction, an X-axis guide rail which is fixed at the tops of the two upright posts and extends in the width direction of the working platform, the opening and closing driving piece is an air cylinder which is arranged on the clamping jaw mounting frame and is used for driving the clamping jaws to open and close, the pressure head is hinged with the clamping jaw mounting frame, the rotating mechanism is a rotating motor which is rotationally connected with the clamping jaw mounting frame, the XZ double-shaft driving mechanism comprises a first support which is arranged on the X-axis guide rail in a sliding manner, a horizontal driving piece which drives the first support to axially slide along the X-axis guide rail, a second support which is arranged on the first support and a vertical driving piece which drives the second support to lift in the height direction of the first support, the clamping jaw mounting frame is rotationally arranged on the second support, and the clamping jaw mounting frame is in limit fit with the second support in the vertical direction.

7. The optical film laminating apparatus according to claim 1, wherein the roller laminating mechanism comprises a screw rod accommodated in the negative pressure cavity, a nut positioned in the negative pressure cavity and in threaded connection with the screw rod, and a motor positioned on the outer side of the net cage and driving the screw rod to rotate, the roller is embedded on the upper surface of the nut in a rolling manner, a chute is formed in the inner wall of the net cage, and the edge of the nut is embedded in the chute and is in sliding fit with the inner wall of the net cage.

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

9. The optical film laminating apparatus according to claim 1, wherein a first reservation station is provided between the feeding mechanism and the discharging assembly in the first working position, a second reservation station is provided between the feeding mechanism in the second working position and the feeding mechanism in the third working position, a waste bin for accommodating waste 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 apparatus according to claim 1, further comprising a dust cover fixed on the operation platform and covering the film feeding and discharging unit and the film tearing and laminating unit, wherein a gas filtering device is arranged at the top of the dust cover.