Display glass substrate laminating turnover machine

Abstract

The invention discloses a display glass substrate laminating turnover machine, a machine frame is provided with a glass plate turnover device, the glass plate turnover device comprises a rotatable glass plate turnover frame, the two side surfaces of the glass plate turnover frame are provided with turnover supports through corresponding alignment platforms, and the turnover supports are provided with a plurality of turnover plates; a plurality of glass plate suction cup supporting rods are installed on the outer side of each overturning support, and a plurality of glass plate suction cups which are communicated with one another are installed on the glass plate suction cup supporting rods. At least three alignment sensors are arranged on each side surface of the overturning frame, and the positions of the alignment sensors correspond to a supporting plane formed by the corresponding glass plate suction cups; the machine frame is further provided with a material taking auxiliary support, the material taking auxiliary support comprises a swing shaft, the two ends of the swing shaft are in transmission connection with swing shaft drivers, the swing shaft is further fixedly provided with a plurality of outwards-extending swing supporting arms, and the outwards-extending ends of the swing supporting arms are located on the same plane. According to the closing and overturning machine, stable overturning of the glass substrates can be achieved, and it can be guaranteed that the two glass substrates are accurately aligned and attached.

Description

Technical Field

[0001] The invention relates to a manufacturing device for a liquid crystal flat panel display, in particular to a device for coating frame glue on the surface of a glass substrate in the process of manufacturing a liquid crystal display and for turning over the glass substrate in a liquid crystal dripping process. Background Art

[0002] A liquid crystal display (LCD) is a device that fills a liquid crystal medium between two glass substrates and adds a polarization layer of a certain shape. When voltage is applied to the liquid crystal medium through a conductive grid, the liquid crystal medium acts as an optical switch, thereby forming a certain image.

[0003] Liquid crystal dripping of liquid crystal display (LCD) is an important process stage in its manufacturing process. The liquid crystal dripping stage includes applying regional boundary frame glue and liquid crystal dripping on the surfaces of two glass substrates respectively, and then flipping the glass substrates to make the glue-coated surfaces and liquid crystal surfaces of the two glass substrates relatively fit together, and then pressing and light curing to complete the liquid crystal dripping process. Since the glass substrate is a glass sheet with a large surface area and ultra-thin thickness, the surface of a single glass substrate can reach 2500×3000mm, and its thickness is only about 0.5mm. The surface of the glass substrate is divided into multiple glue-coated areas and liquid crystal dripping areas. Therefore, during the production, it is required not only that the glass substrate support and adsorption are reliable, and the transportation and flipping are stable, but also that the bonding accuracy and bonding efficiency of the two glass substrates are guaranteed to be high. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a display glass substrate laminating and flipping machine, which can not only realize the smooth flipping of the glass substrate, but also ensure the precise alignment and lamination of two glass substrates.

[0005] In order to solve the above technical problems, the display glass substrate laminating and flipping machine of the present invention comprises a machine frame, a blower is installed on the top of the machine frame, and a machine frame panel is installed around the machine frame; a glass plate flipping device is also installed on the machine frame, and the glass plate flipping device comprises a glass plate flipping frame rotatably installed on the machine frame, and flipping brackets are installed on both sides of the glass plate flipping frame through corresponding alignment platforms, and a plurality of glass plate suction cup supporting rods are installed on the outer side of each of the flipping brackets, and a plurality of mutually connected glass plate suction cups are installed on each glass plate suction cup supporting rod; at least three alignment sensors are arranged on each side of the flipping frame, and the positions of the alignment sensors correspond to the supporting planes formed by the corresponding glass plate suction cups; a material picking auxiliary support is also installed on the machine frame, and the material picking auxiliary support comprises a swing shaft, and both ends of the swing shaft are transmission-connected with a swing shaft driver, and a plurality of outwardly extending swing supporting arms are fixedly arranged on the swing shaft, and the outwardly extending ends of each swing supporting arm are located on the same plane.

[0006] Preferably, the glass plate turning device and the material taking auxiliary support are both installed in the frame of the machine frame; an air filter is provided on the air inlet side of the blower, and the blowing side of the blower faces the frame cavity of the machine frame.

[0007] Preferably, the flip frame is rotatably mounted on the machine frame via a flip motor and a flip support shaft, the flip motor and the flip support shaft are respectively arranged on opposite sides of the flip frame, and the rotation axes of the flip motor and the flip support shaft are located on the same straight line.

[0008] Preferably, a flip angle sensor is installed on the shaft end of the flip support shaft, and a positive position sensor is also installed on the flip frame.

[0009] Preferably, the alignment platform is a UVW alignment platform, the alignment sensor and the flip angle sensor are proximity sensors, and the alignment sensor is a contact sensor.

[0010] Preferably, both ends of the glass plate suction cup supporting rod are equipped with air nozzles, and the glass plate suction cup supporting rod is also provided with a negative pressure channel, the two air nozzles are connected through the negative pressure channel, and the negative pressure channel is connected to each glass plate suction cup.

[0011] Preferably, the flip bracket adopts a rod-type frame structure, and three alignment sensors are installed on the same side of the flip frame, and the three alignment sensors are located at the three vertices of a triangle; the glass plate suction cup support rods installed on the flip bracket are arranged parallel to each other, and the glass plate suction cup is a vacuum glass suction cup.

[0012] Preferably, both ends of the swing shaft are mounted on the machine frame via swing supports at the corresponding ends, and both extended ends of the swing shaft are transmission-connected to the swing shaft drivers at the corresponding ends via couplings.

[0013] Preferably, buffer swing arms are fixedly mounted on both ends of the swing shaft, the buffer swing arms correspond to the buffers, and the buffers are fixedly mounted on the machine frame.

[0014] Preferably, a plurality of swing support arms are fixedly mounted on the swing shaft, and swing arm rollers are rotatably mounted on the extended ends of the swing support arms, and each swing arm roller is located on the same plane; an intermediate support is also rotatably supported on the swing shaft, and the intermediate support is mounted on the machine frame; the swing shaft driver is a swing cylinder, the buffer is an air buffer cylinder, and the coupling is a gear coupling.

[0015] In the above structure, since the flip frame installed on the machine frame is equipped with a flip bracket through the alignment platform, the flip frame carrying the glass substrate flips around the frame axis. This axis-around flipping structure ensures the smooth flipping of large-sized thin glass substrates, stable operation, high sensitivity, which can not only improve the flipping efficiency of the glass substrate, but also effectively avoid the damage of the glass substrate during flipping; a number of interconnected glass plate suction cups are installed on the flip bracket through the glass plate suction cup support rod, and the glass plate suction cups can generate a strong adsorption force through vacuum, and a number of interconnected glass plate suction cups can ensure the consistency of the suction force of the suction cups at different positions on the glass plate surface, ensuring the safe adsorption of the glass substrate, and also has the function of remote control adsorption and release. In addition, due to the use of an alignment sensor and an alignment platform coordinated therewith, the position of the glass substrate can be accurately positioned to a great extent, and the fitting accuracy of the glass substrate can be improved; and the coordinated actions of the alignment sensor and the alignment platform improve the alignment automation and alignment efficiency of the glass substrate. Since the material picking auxiliary support is installed on the machine frame, when the material picking mechanical arm supports the glass substrate, the auxiliary support can turn the cantilever structure of the mechanical arm into a simple support structure, avoiding the deflection and "hanging" phenomenon of the cantilever arm, resulting in bending and damage of the glass plate, and ensuring the smooth and reliable transportation of the glass substrate; the swing shaft driver is connected to both ends of the swing shaft, which can ensure the synchronous swing accuracy of each swing supporting arm on the swing shaft, and improve the smooth and reliable support of the glass substrate; the buffer swing arms and buffers corresponding to each other are fixedly installed at both ends of the swing shaft, so as to ensure that the swing supporting arm can stably contact the glass substrate, avoid contact impact vibration with the glass substrate, and avoid damage to the glass substrate; the two ends of the swing shaft are installed on the machine frame through swing supports instead of being directly connected to the swing shaft driver, which effectively improves the movement accuracy of the swing shaft. The above structures are very beneficial to the transportation of large-sized and ultra-thin glass substrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The display glass substrate laminating and flipping machine of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a three-dimensional structural diagram of a specific embodiment of the display glass substrate bonding and flipping machine of the present invention;

[0018] Figure 2 yes Figure 1 The installation structure diagram of the glass plate turning device and the material taking auxiliary support on the machine frame in the embodiment shown;

[0019] Figure 3 yes Figure 1 A three-dimensional structural diagram of a glass plate turning device in the embodiment shown;

[0020] Figure 4 yes Figure 3A front view of the glass plate turning device shown;

[0021] Figure 5 yes Figure 4 Left view of;

[0022] Figure 6 yes Figure 3 A three-dimensional structural diagram of a flipping frame of a glass plate flipping device;

[0023] Figure 7 yes Figure 3 Installation structure diagram of the middle flip bracket and glass plate suction cup;

[0024] Figure 8 yes Figure 7 Installation structure diagram of the middle flip bracket and glass plate suction cup unit;

[0025] Fig. 9 yes Figure 8 sectional view of

[0026] Fig.10 yes Figure 1 Working diagram of the auxiliary support for taking materials in the embodiment shown;

[0027] Fig.11 yes Fig.10 A three-dimensional structural diagram of the working condition of the auxiliary support for center reclaiming;

[0028] Fig.12 yes Fig.10 A three-dimensional structural diagram of the auxiliary support for taking materials out of working condition;

[0029] Fig.13 yes Fig.12 Driving structure diagram of the swing shaft end in the structure.

[0030] In the figure, 1 is a machine frame, 2 is a machine frame panel, 3 is an exhaust fan unit, 4 is a glass plate flipping device, 401 is a flipping frame, 402 is a sensor column, 403 is a positioning sensor, 404 is a flipping bracket, 405 is a glass plate suction cup support rod, 406 is a glass plate suction cup, 407 is a positioning platform, 408 is a flipping support seat, 409 is a flip motor support seat, 410 is a flip motor, 411 is a flip support shaft, and 412 is a flip angle sensor. Device, 413—positive position sensor, 414—negative pressure channel, 415—air nozzle, 5—inlet and outlet, 6—material picking auxiliary support, 601—swing shaft driver, 602—swing shaft, 603—driver support, 604—swing shaft support, 605—support bottom plate, 606—intermediate support, 607—swing support arm, 608—swing arm roller, 609—buffer swing arm, 610—buffer, 611—coupling, 7—material picking mechanical arm. DETAILED DESCRIPTION

[0031] like Figure 1 , Figure 2 The display glass substrate laminating and flipping machine shown includes a machine frame 1, which is a cubic frame structure fixedly constructed by aluminum alloy profiles. Nine exhaust fan units 3 (EFU) are fixedly installed on the top of the cubic frame structure. The exhaust fan unit (EFU) is mainly used to manage and control the air flow and air quality in the facility. The exhaust fan unit 3 can also use an axial flow fan or other fan with an air filter. A machine frame panel 2 is also installed on the surrounding walls of the machine frame 1, and an inlet and outlet 5 is set on both side surfaces of the machine frame 1. The inlet and outlet 5 includes a feed port and a material removal port. The feed port and the material removal port are respectively set on two opposite sides of the machine frame 1. Doors and windows for observation or maintenance are also set on the side of the machine frame 1.

[0032] A glass plate turning device 4 and a material taking auxiliary support 6 are installed in the frame cavity of the machine frame 1. The glass plate turning device 4 is located in the middle area of ​​the frame cavity of the machine frame 1, and the material taking auxiliary support 6 is located below the material opening.

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, the glass plate flipping device 4 includes a flipping frame 401 which can flip 180° around a flipping axis, and alignment platforms 407 are symmetrically installed on both sides of the flipping frame 401. The alignment platform 407 is a UVW alignment platform. The UVW alignment platform includes three power axes, and alignment can be achieved by controlling the movement of the X and Y axes and the rotation of the θ axis.

[0034] A flip bracket 404 is installed on the outside of each alignment platform 407, and glass plate suction cup supporting rods 405 parallel to each other are fixedly installed on the flip bracket 404, and glass plate suction cups 406 for adsorbing or releasing the glass substrate are installed on the glass plate suction cup supporting rods 405. Three alignment sensors 403 are fixedly installed on both sides of the flip frame 401, and the positions of the alignment sensors 403 correspond to the glass substrate supporting planes formed by the corresponding glass plate suction cups 406, so as to detect the edge position of the glass substrate. Therefore, the glass plate flip device 4 adopts a structure type with two sides symmetrical to each other.

[0035] like Figure 5 , Figure 6As shown, the flip frame 401 is a rectangular frame fixed by aluminum profiles, and a flip motor 410 and a flip support shaft 411 are respectively installed on the opposite sides of the rectangular frame. The output shaft of the flip motor 410 is connected to one side of the flip frame 401, and the flip support shaft 411 with a short axis structure is installed on the other side of the flip frame 401; the axis center line of the output shaft of the flip motor 410 and the axis center line of the flip support shaft 411 are located on the same straight line. The flip motor 410 is installed on the frame of the machine frame 1 through the flip motor support seat 409, and the flip support shaft 411 is rotatably installed on the flip support seat 408, and the flip support seat 408 is fixedly installed on the frame of the machine frame 1. The flip motor 410 adopts a servo motor or a stepping motor.

[0036] A flip angle sensor 412 is installed at the extended end of the flip support shaft 411, and the flip angle sensor 412 is used to sense and detect the swing angle of the flip frame 401. A positive position sensor 413 is also installed on a frame side beam of the flip frame 401, and the positive position sensor 413 is used to sense and monitor whether the flip frame 401 is flipped to the working position. The flip angle sensor 412 adopts a proximity sensor such as a Hall sensor, a capacitive sensor, etc., and the positive position sensor 413 adopts a contact sensor such as a travel switch.

[0037] The alignment sensor 403 uses a photoelectric sensor, and two parts of the photoelectric sensor are respectively installed on the sensor column 402. The two parts are respectively located on both sides of the plane determined by the glass plate suction cup 406 to sense the edge position of the glass substrate on the glass plate suction cup 406. The sensor column 402 is installed on the frame beam of the flip frame 401 through an adjustable mounting seat.

[0038] like Figure 7 As shown, the flip bracket 404 is also a rod-type frame structure, and 9 glass plate suction cup supporting rods 405 that are parallel to each other and equidistantly arranged are fixedly installed on the flip bracket 404 through the vertical rods thereon. The length and number of the glass plate suction cup supporting rods 405 should be determined according to the size of the plate surface of the supported glass substrate. Eleven glass plate suction cups 406 are installed on each glass plate suction cup supporting rod 405, and the suction plate openings of the glass plate suction cups 406 on each glass plate suction cup supporting rod 405 are on the same horizontal plane to maintain balanced and stable support of the glass substrate.

[0039] like Figure 8 , Fig. 9As shown, air nozzles 415 are installed at both ends of the glass plate suction cup supporting rod 405, and a negative pressure hole 414 is arranged on the rod body of the glass plate suction cup supporting rod 405 along the rod length direction, and two air nozzles 415 are connected through the negative pressure hole 414, and each glass plate suction cup 406 on the glass plate suction cup supporting rod 405 is connected to the negative pressure hole 414, and both ends of the negative pressure hole 414 are connected to the air nozzles 415 at the corresponding ends, and the air nozzles 415 are connected to the negative pressure gas source, and air nozzles 415 are installed at both ends of the glass plate suction cup supporting rod 405. This structure of adsorption from both ends is conducive to ensuring the balance of negative pressure on the glass plate suction cup supporting rod 405. The glass plate suction cup 406 adopts a vacuum glass suction cup, which is conducive to generating a strong and stable adsorption force to ensure the safe adsorption of the glass.

[0040] like Fig.10 As shown, the transfer and support of the glass substrate is operated by the material picking robot 7. Since the glass substrate is an ultra-thin large-sized glass plate, the length of the supporting fingers of the material picking robot 7 is greater than 3m. Such long material picking fingers constitute a cantilever structure when picking up materials, which will inevitably produce "overhang"; especially when the glass substrate adsorbed on the glass plate suction cup 406 of the glass plate turning device 4 is released and transferred to the material picking robot 7, due to the sudden change in the force of the material picking robot 7, the finger end of the robot arm will sag, which is very likely to cause damage to the glass substrate, resulting in a decrease in the yield of the glass substrate. Installing a material picking auxiliary support 6 at the finger end of the material picking robot 7 can effectively avoid the occurrence of this phenomenon.

[0041] like Fig.11 , Fig.12 and Fig.13 As shown, the material taking auxiliary support 6 includes a swing shaft 602, and the two ends of the swing shaft 602 are rotatably supported on the swing shaft supports 604 at the corresponding ends. The two swing shaft supports 604 are fixedly installed on the frame beam of the machine frame 1 through the support bottom plate 605. This structure is conducive to maintaining the stability of the rotation of the swing shaft 602 without being affected by the driving device. Eight swing supporting arms 607 are fixedly installed on the swing shaft 602. Specifically, the number of swing supporting arms 607 should be determined according to the size of the glass substrate. The extended end of the swing supporting arm 607 is rotatably supported by a swing arm roller 608, and each swing arm roller 608 is on the same plane. The swing shaft 602 is also rotatably supported by an intermediate support 606. This structure can effectively ensure the coaxiality and stability of the swing of the swing shaft 602.

[0042] A slow-motion swing arm 609 is fixedly installed on the inner side of the swing shaft support 604 at both ends of the swing shaft 602, and each buffer swing arm 609 corresponds to a buffer 610. The buffer 610 and the swing shaft support 604 are fixedly installed on the support bottom plate 605, and the support bottom plate 605 is fixedly installed on the frame beam of the machine frame 1. The buffer 610 is a gas buffer. When the swing shaft 602 and the swing supporting arm 607 thereon swing to the supporting position, the buffer swing arm 609 gradually approaches and contacts the buffer 610 to play a role in buffering and avoiding vibration.

[0043] A swing shaft driver 601 is also provided at both ends of the swing shaft 602, and the swing shaft driver 601 is fixedly mounted on a corresponding driver support 603, and the driver support 603 is mounted on a support bottom plate 605. The swing shaft driver 601 is a swing cylinder, and the output shaft of the swing cylinder is connected to the corresponding end of the swing shaft 602 through a coupling 611. The coupling 611 adopts a gear coupling, which not only has a strong torque transmission capability, but also can cause phase displacement between the two shafts, thereby avoiding the influence of the driver on the swing stability of the swing shaft.

[0044] Fig.11 The middle swing supporting arm 607 is swung to a horizontal position, and the material taking auxiliary support 6 is in a working position. Fig.12 The middle swing supporting arm 607 swings to a hanging state, and the material taking auxiliary support 6 is in a waiting working state.

[0045] The above only lists some preferred embodiments of the present invention, but the present invention is not limited thereto, and many improvements and changes can be made. As long as the improvements and changes are made on the basis of the basic principles of the present invention, they should be regarded as falling within the scope of protection of the present invention.

Claims

1. A display glass substrate laminating and flipping machine, comprising a machine frame (1), characterized in that: A blower (3) is installed on the top of the machine frame (1), and a machine frame panel (2) is installed around the machine frame (1); a glass plate flipping device (4) is also installed on the machine frame (1), and the glass plate flipping device (4) comprises a glass plate flipping frame (401) rotatably installed on the machine frame (1), and flipping brackets (404) are installed on both sides of the glass plate flipping frame (401) through corresponding alignment platforms (407), and a plurality of glass plate suction cup support rods (405) are installed on the outer side of each of the flipping brackets (404), and a plurality of glass plate suction cup support rods (405) are installed on each glass plate suction cup support rod (405) that are connected to each other. suction cup (406); at least three alignment sensors (403) are arranged on each side of the flip frame (401), and the positions of the alignment sensors (403) correspond to the supporting plane formed by the corresponding glass plate suction cup (406); the machine frame (1) is also equipped with a material picking auxiliary support (6), and the material picking auxiliary support (6) includes a swing shaft (602), both ends of the swing shaft (602) are transmission-connected to a swing shaft driver (601), and a plurality of outwardly extending swing supporting arms (607) are fixedly arranged on the swing shaft (602), and the outwardly extending ends of each swing supporting arm (607) are located on the same plane.

2. The display glass substrate laminating and flipping machine according to claim 1, characterized in that: The glass plate turning device (4) and the material taking auxiliary support (6) are both installed in the frame of the machine frame (1); the air inlet side of the air blower (3) is provided with an air filter, and the blowing side of the air blower (3) faces the frame cavity of the machine frame (1).

3. The display glass substrate laminating and flipping machine according to claim 1, characterized in that: The flip frame (401) is rotatably mounted on the machine frame (1) via a flip motor (410) and a flip support shaft (411); the flip motor (410) and the flip support shaft (411) are respectively arranged on two opposite sides of the flip frame (401); and the rotation axes of the flip motor (410) and the flip support shaft (411) are located on the same straight line.

4. The display glass substrate laminating and flipping machine according to claim 3, characterized in that: A flip angle sensor (412) is installed on the shaft end of the flip support shaft (411), and a positive position sensor (413) is also installed on the flip frame (401).

5. The display glass substrate laminating and flipping machine according to claim 1, characterized in that: The alignment platform (407) is a UVW alignment platform, the alignment sensor (403) and the flip angle sensor (412) are proximity sensors, and the alignment sensor (413) is a contact sensor.

6. The display glass substrate laminating and flipping machine according to claim 1, characterized in that: Air nozzles (415) are installed at both ends of the glass plate suction cup supporting rod (405), and a negative pressure channel (414) is also provided on the glass plate suction cup supporting rod (405). The two air nozzles (415) are connected through the negative pressure channel (414), and the negative pressure channel (414) is connected to each glass plate suction cup (406).

7. The display glass substrate laminating and flipping machine according to claim 1, characterized in that: The flip bracket (404) adopts a rod-type frame structure, and three alignment sensors (403) are installed on the same side of the flip frame (401), and the three alignment sensors (403) are located at three vertices of a triangle; the glass plate suction cup supporting rods (405) installed on the flip bracket (404) are arranged parallel to each other, and the glass plate suction cup (406) is a vacuum glass suction cup.

8. The display glass substrate laminating and flipping machine according to claim 1, characterized in that: The two ends of the swing shaft (602) are mounted on the machine frame (1) via swing supports (604) at the corresponding ends, and the two extended ends of the swing shaft (602) are transmission-connected to the swing shaft driver (601) at the corresponding ends via couplings (611).

9. The display glass substrate laminating and flipping machine according to claim 1, characterized in that: Buffer swing arms (609) are fixedly mounted on both ends of the swing shaft (602); the buffer swing arms (609) correspond to buffers (610); and the buffers (610) are fixedly mounted on the machine frame (1).

10. The display glass substrate laminating and flipping machine according to claim 1, 8 or 9, characterized in that: A plurality of swing support arms (607) are fixedly mounted on the swing shaft (602), and swing arm rollers (608) are rotatably mounted on the extended ends of the swing support arms (607), and each swing arm roller (608) is located on the same plane; an intermediate support (606) is also rotatably supported on the swing shaft (602), and the intermediate support (606) is mounted on the machine frame (1); the swing shaft driver (601) is a swing cylinder, the buffer (610) is an air buffer cylinder, and the coupling (611) is a gear coupling.

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