Display glass substrate bonding turner

Abstract

The application discloses a display glass substrate pasting and overturning machine, a glass plate overturning device is installed on a machine frame, the glass plate overturning device comprises a rotatable glass plate overturning frame, overturning supports are installed on two side surfaces of the glass plate overturning frame through corresponding alignment platforms, a plurality of glass plate suction disc supporting rods are installed on the outer side of each overturning support, and a plurality of mutually-communicating glass plate suction discs are installed on the glass plate suction disc supporting rods; at least three alignment sensors are arranged on each side surface of the overturning frame, the positions of the alignment sensors correspond to the supporting planes formed by corresponding glass plate suction discs; a material taking auxiliary support is further installed on the machine frame, the material taking auxiliary support comprises a swing shaft, swing shaft drivers are transmissionally connected to the two ends of the swing shaft, a plurality of outwardly-extending swing supporting arms are fixedly arranged on the swing shaft, and the outwardly-extending ends of the swing supporting arms are located on the same plane. The overturning machine can not only realize the stable overturning of glass substrates, but also can guarantee the accurate alignment and pasting of two glass substrates.

Description

Technical Field

[0001] This invention relates to a manufacturing apparatus for a liquid crystal flat panel display, and more particularly to a device for flipping the glass substrate during the glass substrate surface edge adhesive coating process and the liquid crystal dispensing process in the manufacturing of a liquid crystal display. Background Technology

[0002] A liquid crystal display (LCD) is made by filling a liquid crystal medium between two glass substrates and adding a polarization layer of a certain shape. When a voltage is applied to the liquid crystal medium through a conductive grid, the liquid crystal medium acts as a light switch, thereby forming a certain image.

[0003] Liquid crystal deposition (LCD) is a crucial stage in the manufacturing process of liquid crystal displays (LCDs). This stage involves applying boundary adhesive to the surfaces of two glass substrates, depositing the liquid crystal onto each substrate, flipping the substrates to bring the adhesive-coated and liquid crystal surfaces together, and then pressing and photocuring to complete the deposition process. Because the glass substrate is a large-area, ultra-thin sheet of glass—a single substrate can reach 2500×3000mm in size and only about 0.5mm thick—and its surface is divided into multiple adhesive-coated and liquid crystal deposition areas, the manufacturing process requires not only reliable support and adhesion of the glass substrates and smooth transport and flipping, but also high precision and efficiency in bonding the two substrates. Summary of the Invention

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

[0005] To solve the above-mentioned technical problems, the present invention provides a display glass substrate bonding and flipping machine, comprising a frame, a blower mounted on the top of the frame, and frame panels mounted around the frame; a glass plate flipping device is also mounted on the frame, the glass plate flipping device comprising a glass plate flipping frame rotatably mounted on the frame, flipping brackets mounted on two sides of the glass plate flipping frame via corresponding alignment platforms, and a plurality of glass plate suction cup support rods mounted on the outer side of each flipping bracket, each glass plate suction cup support rod being mounted with a plurality of interconnected glass plate suction cups; at least three alignment sensors are provided on each side of the flipping frame, the positions of the alignment sensors corresponding to the support planes formed by the corresponding glass plate suction cups; a material picking auxiliary support is also mounted on the frame, the material picking auxiliary support comprising a swing shaft, both ends of the swing shaft being drivenly connected to a swing shaft driver, and a plurality of outwardly extending swing support arms are fixedly mounted on the swing shaft, the outwardly extending ends of each swing support arm being located on the same plane.

[0006] Preferably, the glass plate flipping device and the material handling auxiliary support are both installed inside 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 cavity of the machine frame.

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

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

[0010] Preferably, air nozzles are installed at both ends of the glass plate suction cup support rod, and negative pressure channels are also provided on the glass plate suction cup support rod. The two air nozzles are connected through the negative pressure channels, and the negative pressure channels are connected to each glass plate suction cup.

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

[0012] Preferably, the two ends of the swing shaft are mounted on the frame via corresponding swing supports, and both extended ends of the swing shaft are connected to the corresponding swing shaft driver via couplings.

[0013] Preferably, buffer swing arms are fixedly installed at both ends of the swing shaft, the buffer swing arms correspond to the buffer, and the buffer is fixedly installed on the 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, with each swing arm roller 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 a pneumatic buffer cylinder, and the coupling is a gear coupling.

[0015] In the above structure, the flipping frame mounted on the machine frame is equipped with a flipping bracket via an alignment platform. The flipping frame carrying the glass substrate flips around the frame axis. This axial flipping structure ensures the smooth flipping of large-size thin glass substrates, with stable operation and high sensitivity. It can improve the flipping efficiency of the glass substrate and effectively avoid damage during flipping. Several interconnected glass plate suction cups are mounted on the flipping bracket via glass plate suction cup support rods. The glass plate suction cups can generate strong adsorption force through vacuum, and the interconnected glass plate suction cups can ensure the consistency of the suction force of the suction cups located at different positions on the glass plate surface, ensuring the safe adsorption of the glass substrate. It also has the function of remote control of adsorption and release. Furthermore, due to the use of an alignment sensor and a coordinated alignment platform, the precise positioning of the glass substrate can be greatly realized, improving the bonding accuracy of the glass substrate. Moreover, the coordinated action of the alignment sensor and the alignment platform further improves the automation level and alignment efficiency of the glass substrate alignment. Because an auxiliary support is installed on the frame, when the robotic arm carries the glass substrate, this auxiliary support can transform the cantilever structure of the robotic arm into a simply supported structure, avoiding deflection and "sag" of the cantilever arm, which could lead to glass substrate bending and breakage, thus ensuring stable and reliable transport of the glass substrate. A swing shaft driver is connected to both ends of the swing shaft, ensuring the synchronous swing accuracy of each swinging support arm on the swing shaft, improving the stable and reliable support of the glass substrate. Corresponding buffer swing arms and buffers are also fixedly installed at both ends of the swing shaft, ensuring that the swinging support arms can smoothly contact the glass substrate, avoiding contact impact and vibration to prevent damage to the glass substrate. The swing shaft is mounted to the frame via swing supports at both ends, rather than being directly connected to the swing shaft driver, effectively improving the movement accuracy of the swing shaft. These structures are highly advantageous for transporting large-size, ultra-thin glass substrates. Attached Figure Description

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

[0017] Figure 1 This 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 diagram shows the installation structure of the glass plate flipping device and the material handling auxiliary support on the machine frame in the embodiment shown.

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

[0020] Figure 4 yes Figure 3Front view of the glass plate flipping device shown;

[0021] Figure 5 yes Figure 4 The left view;

[0022] Figure 6 yes Figure 3 A three-dimensional structural diagram of the flipping frame of the glass plate flipping device shown.

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

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

[0025] Figure 9 yes Figure 8 Cross-sectional view;

[0026] Figure 10 yes Figure 1 The diagram shows the working process of the material handling auxiliary support in the embodiment shown.

[0027] Figure 11 yes Figure 10 A three-dimensional structural diagram of the auxiliary support for material handling in operation;

[0028] Figure 12 yes Figure 10 A three-dimensional structural diagram of the material-retrieving auxiliary support in the disengaged state.

[0029] Figure 13 yes Figure 12 A diagram of the driving structure at the end of the pendulum shaft in the structure.

[0030] In the diagram, 1—frame, 2—frame panel, 3—exhaust fan unit, 4—glass plate flipping device, 401—flipping frame, 402—sensor column, 403—alignment sensor, 404—flipping bracket, 405—glass plate suction cup support rod, 406—glass plate suction cup, 407—alignment platform, 408—flipping support seat, 409—flipping motor support seat, 410—flipping motor, 411—flipping support shaft, 412—flipping angle sensor, 413—positive position sensor, 414—negative pressure channel, 415—air nozzle. 5—Inlet / outlet, 6—Material handling auxiliary support, 601—Swing shaft driver, 602—Swing shaft, 603—Driver support, 604—Swing shaft support, 605—Support base plate, 606—Intermediate support, 607—Swing support arm, 608—Swing arm roller, 609—Buffer swing arm, 610—Buffer, 611—Coupling, 7—Material handling robotic arm. Detailed Implementation

[0031] like Figure 1 , Figure 2 The display glass substrate bonding and flipping machine shown includes a frame 1, which is a cubic frame structure fixedly constructed from aluminum alloy profiles. Nine exhaust fan units 3 (EFUs) are fixedly installed on the top of the cubic frame structure. The exhaust fan units (EFUs) are mainly used to manage and control the airflow and air quality within the facility. The exhaust fan units 3 can also be axial flow fans or other fans with air filters. Frame panels 2 are also installed on the four walls of the frame 1, and inlet and outlet ports 5 are provided on both sides of the frame 1. The inlet and outlet ports 5 include a feed port and a take-off port, which are respectively located on two opposite sides of the frame 1. Doors and windows for observation or maintenance are also provided on the sides of the frame 1.

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

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, the glass plate flipping device 4 includes a flipping frame 401 that can be flipped 180° around the flipping axis. 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 flipping bracket 404 is installed on the outer side of each alignment platform 407. Parallel glass plate suction cup support rods 405 are fixedly installed on the flipping bracket 404, and glass plate suction cups 406 for adsorbing or releasing glass substrates are installed on the glass plate suction cup support rods 405. Three alignment sensors 403 are fixedly installed on both sides of the flipping frame 401. The position of the alignment sensors 403 corresponds to the glass substrate support plane formed by the corresponding glass plate suction cups 406, so as to detect the edge position of the glass substrate. Therefore, the glass plate flipping device 4 adopts a structure with mutual symmetry on both sides.

[0035] like Figure 5 , Figure 6As shown, the tilting frame 401 is a rectangular frame fixed with aluminum profiles. A tilting motor 410 and a tilting support shaft 411 are respectively installed on opposite sides of this rectangular frame. The output shaft of the tilting motor 410 is connected to one side of the tilting frame 401, and a tilting support shaft 411 with a short shaft structure is installed on the other side of the tilting frame 401. The centerline of the output shaft of the tilting motor 410 and the centerline of the tilting support shaft 411 are on the same straight line. The tilting motor 410 is mounted on the frame of the machine frame 1 via a tilting motor support 409, while the tilting support shaft 411 is rotatably mounted on a tilting support 408, which is fixedly mounted on the frame of the machine frame 1. The tilting motor 410 is either a servo motor or a stepper motor.

[0036] A tilt angle sensor 412 is installed at the extended end of the tilting support shaft 411. The tilt angle sensor 412 is used to sense and detect the swing angle of the tilting frame 401. A position sensor 413 is also installed on one side beam of the tilting frame 401. The position sensor 413 is used to sense and monitor whether the tilting frame 401 has tilted to the working position. The tilt angle sensor 412 is a proximity sensor such as a Hall effect sensor or a capacitive sensor, while the position sensor 413 is a contact sensor such as a limit switch.

[0037] The alignment sensor 403 is a photoelectric sensor. The two components of the photoelectric sensor are respectively mounted on the sensor column 402. These two components are located on opposite sides of the plane defined by the glass plate suction cup 406 to sense the position of the edge of the glass substrate on the glass plate suction cup 406. The sensor column 402 is mounted on the frame beam of the flip frame 401 via an adjustable mounting base.

[0038] like Figure 7 As shown, the flip-up bracket 404 is also a rod-type frame structure. Nine parallel and equidistant glass plate suction cup support rods 405 are fixedly installed on the flip-up bracket 404 via uprights. The length and number of glass plate suction cup support rods 405 should be determined according to the size of the glass substrate being supported. Each glass plate suction cup support rod 405 is equipped with 11 glass plate suction cups 406. The suction openings of the glass plate suction cups 406 on each glass plate suction cup support rod 405 are on the same horizontal plane to maintain balanced and stable support for the glass substrate.

[0039] like Figure 8 , Figure 9As shown, air nozzles 415 are installed at both ends of the glass plate suction cup support rod 405. A negative pressure channel 414 is provided along the length of the rod body of the glass plate suction cup support rod 405. The two air nozzles 415 are connected through the negative pressure channel 414. Each glass plate suction cup 406 on the glass plate suction cup support rod 405 is connected to the negative pressure channel 414. The two ends of the negative pressure channel 414 are connected to the corresponding air nozzles 415, which are then connected to a negative pressure air source. The installation of air nozzles 415 at both ends of the glass plate suction cup support rod 405, along with this structure that allows for suction from both ends, helps ensure a balanced negative pressure on the glass plate suction cup support rod 405. The glass plate suction cup 406 is a vacuum glass suction cup, which helps generate a strong and stable suction force, ensuring the safe adsorption of the glass.

[0040] like Figure 10 As shown, the glass substrate is transferred and supported by a picking robot arm 7. Since the glass substrate is an ultra-thin, large-sized glass sheet, the length of the picking robot arm 7's supporting fingers is greater than 3m. Such long picking fingers form a cantilever structure during picking, inevitably causing "drooping". Especially when the glass substrate adsorbed on the glass plate suction cup 406 of the glass plate flipping device 4 is released and transferred to the picking robot arm 7, the sudden change in force on the picking robot arm 7 causes the finger tips of the robot arm to droop, which can easily cause damage to the glass substrate and reduce the yield of glass substrates. Installing a picking auxiliary support 6 at the finger tips of the picking robot arm 7 can effectively avoid this phenomenon.

[0041] like Figure 11 , Figure 12 and Figure 13 As shown, the material handling auxiliary support 6 includes a swing shaft 602. Both ends of the swing shaft 602 are rotatably supported on corresponding swing shaft supports 604. The two swing shaft supports 604 are fixedly mounted on the frame beam of the machine frame 1 via support base plates 605. This structure helps maintain the smooth rotation of the swing shaft 602, unaffected by the drive device. Eight swing support arms 607 are fixedly mounted on the swing shaft 602. The specific number of swing support arms 607 should be determined according to the size of the glass substrate. Swing arm rollers 608 are rotatably supported at the extended ends of the swing support arms 607, and all swing arm rollers 608 are on the same plane. An intermediate support 606 is also rotatably supported on the swing shaft 602. This structure effectively ensures the coaxiality and stability of the swing shaft 602.

[0042] A buffer swing arm 609 is fixedly installed on the inner side of the swing shaft support 604 at both ends of the swing shaft 602. Each buffer swing arm 609 corresponds to a buffer 610. The buffer 610 and the swing shaft support 604 are both fixedly installed on the support base plate 605, which is fixedly installed on the frame beam of the machine frame 1. The buffer 610 is a pneumatic buffer. When the swing shaft 602 and the swing support arm 607 on it swing toward the support position, the buffer swing arm 609 gradually approaches and contacts the buffer 610 to play a buffering and vibration damping role.

[0043] A swing shaft driver 601 is also provided at both ends of the swing shaft 602. The swing shaft driver 601 is fixedly installed on the corresponding driver support 603, and the driver support 603 is installed on the support base plate 605. The swing shaft driver 601 is a swing cylinder. 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 is a gear coupling. The gear coupling not only has a strong torque transmission capacity, but also can make the two shafts produce phase displacement, thereby avoiding the influence of the driver on the swing stability of the swing shaft.

[0044] Figure 11 The swing support arm 607 swings to the horizontal position, and the material taking auxiliary support 6 is in the working position. Figure 12 The swing support arm 607 swings to the drooping position, and the material picking auxiliary support 6 is in the waiting-to-work state.

[0045] The above are only some preferred embodiments of the present invention, but the present invention is not limited thereto, and many improvements and modifications can be made. Any improvements and modifications made based on the basic principles of the present invention should be considered to fall within the protection scope of the present invention.

Claims

1. A display glass substrate bonding and flipping machine, comprising a frame (1), characterized in that: A blower (3) is installed on the top of the frame (1), and frame panels (2) are installed around the frame (1). A glass plate flipping device (4) is also installed on the frame (1). The glass plate flipping device (4) includes a glass plate flipping frame (401) rotatably mounted on the frame (1). Flipping brackets (404) are installed on both sides of the glass plate flipping frame (401) through corresponding alignment platforms (407). Several glass plate suction cup support rods (405) are installed on the outside of each flipping bracket (404), and several interconnected glass plate suction cups (406) are installed on each glass plate suction cup support rod (405). At least three alignment sensors (403) are provided on each side of the flipping frame (401). The position of the alignment sensor (403) and the corresponding glass plate suction cup (406) form a support. Corresponding to the surface; the frame (1) is also equipped with a material picking auxiliary support (6). The glass substrate is transferred and supported by a material picking robot (7). The material picking auxiliary support (6) is installed at the fingertip of the material picking robot (7). When the material picking robot (7) supports the glass substrate, the material picking auxiliary support (6) transforms the cantilever structure of the material picking robot (7) into a simply supported structure. The material picking auxiliary support (6) includes a swing shaft (602). Both ends of the swing shaft (602) are connected to a swing shaft driver (601). Several outward swing support arms (607) are also fixedly arranged on the swing shaft (602). The outward ends of each swing support arm (607) are located on the same plane. Swing arm rollers (608) are rotatably installed on the outward ends of the swing support arms (607). Each swing arm roller (608) is located on the same plane.

2. The display glass substrate bonding and flipping machine according to claim 1, characterized in that: The glass plate flipping 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 blower (3) is provided with an air filter, and the blowing side of the blower (3) faces the cavity of the machine frame (1).

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

4. The display glass substrate bonding 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 (411), and a positive position sensor (413) is also installed on the flip frame (401).

5. The display glass substrate bonding and flipping machine according to claim 4, 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 positive position sensor (413) is a contact sensor.

6. The display glass substrate bonding and flipping machine according to claim 1, characterized in that: Both ends of the glass plate suction cup support rod (405) are equipped with air nozzles (415), and the glass plate suction cup support rod (405) is also provided with a negative pressure channel (414). 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 bonding and flipping machine according to claim 1, characterized in that: The flipping bracket (404) adopts a rod frame structure. Three alignment sensors (403) are installed on the same side of the flipping frame (401). The three alignment sensors (403) are located at the three vertices of the triangle. The glass plate suction cup support rods (405) installed on the flipping bracket (404) are arranged parallel to each other. The glass plate suction cup (406) is a vacuum glass suction cup.

8. The display glass substrate bonding and flipping machine according to claim 1, characterized in that: The two ends of the swing shaft (602) are mounted on the frame (1) through the swing support (604) at the corresponding ends. Both extended ends of the swing shaft (602) are connected to the swing shaft driver (601) at the corresponding ends through the coupling (611).

9. The display glass substrate bonding and flipping machine according to claim 8, characterized in that: The two ends of the swing shaft (602) are fixedly installed with buffer swing arms (609), which correspond to the buffer (610). The buffer (610) is fixedly installed on the frame (1).

10. The display glass substrate bonding and flipping machine according to claim 9, characterized in that: The swing shaft (602) is also rotatably supported by an intermediate support (606), which is mounted on the frame (1); the swing shaft driver (601) is a swing cylinder, the buffer (610) is a pneumatic buffer cylinder, and the coupling (611) is a gear coupling.

Images