Black and white LCD screen laminating equipment and laminating method

Abstract

The invention relates to the technical field of liquid crystal display screen production, in particular to black and white LCD screen laminating equipment and a laminating method. The black and white LCD screen laminating equipment provided by the invention comprises a base, and a laminating table is arranged at the top of the base; the heating seat is arranged at the top of the inner side of the laminating table; the top of the laminating table is provided with the laminating mechanism used for laminating the LCD screen; and the glue injection mechanism for injecting glue to the liquid crystal substrate is arranged on the rear side of the top of the base. According to the method, air pressure is reduced to keep a certain vacuum degree, air bubbles in the optical cement are eliminated in advance, the situation that the air bubbles in the optical cement affect attachment of a liquid crystal substrate and a display panel is avoided as much as possible, and the optical cement is injected in an injection mode and then subjected to extrusion attachment; it can be ensured that air is covered by the optical cement and remains between the liquid crystal substrate and the display panel when the optical cement is coated.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display screen production, and in particular to a black-and-white LCD screen laminating device and a laminating method. Background Art

[0002] The black and white LCD screen, also known as the monochrome liquid crystal display, is a type of flat panel display. The advantages of the LCD screen are low power consumption, small size, and low radiation. The LCD screen is widely used in CNC display panels of equipment in various fields due to its beautiful appearance and extremely excellent display function.

[0003] Liquid crystal display screens require a series of processing from production to commissioning, and bonding is an important link in the production process of liquid crystal display screens, so a bonding device is needed to bond the liquid crystal substrate and the display panel together.

[0004] There are many types of bonding equipment for LCDs at present, and the structures of bonding equipment for different display panels are also quite different. They all adopt full bonding technology, that is, optical glue is applied on the surface of the substrate and then the display panel is placed on it and bonded with the help of tools by extrusion or rolling. Although the above method can greatly reduce the probability of bubbles during the bonding process, in order to ensure the bonding effect, the equipment is highly targeted and difficult to adapt to LCDs with large differences in specifications. In addition, if there is a lot of dissolved air in the optical glue used for bonding, bubbles will appear in the LCD after the bonding is completed. It is difficult to expel them by simply squeezing or rolling, which affects the bonding life of the display.

[0005] Therefore, it is necessary to design a black and white LCD screen laminating device and laminating method which is highly adaptable and capable of defoaming. Summary of the invention

[0006] In order to overcome the shortcomings of existing equipment that is highly targeted and difficult to adapt to LCD displays with greatly different specifications, and if there is a lot of dissolved air in the optical glue used for bonding, bubbles will appear in the LCD display after bonding is completed, which are difficult to be discharged by simply squeezing or rolling, the technical problem of the present invention is: to provide a black and white LCD screen bonding equipment and bonding method.

[0007] The technical implementation scheme of the present invention is: a black-and-white LCD screen laminating device, comprising: a base and a laminating table, a laminating table is provided on the top of the base; a heating seat is provided on the top of the inner side of the laminating table; a pressing mechanism is provided on the top of the laminating table for laminating the LCD screen; a glue injection mechanism is provided on the rear side of the top of the base for injecting glue into the liquid crystal substrate; a placement mechanism is provided on the inner side of the laminating table for positioning and placing the liquid crystal substrate and the display panel.

[0008] Optionally, the pressing mechanism specifically includes: a fixed frame, a fixed frame is provided on the upper part of the laminating platform; a cylinder, a cylinder is provided on the upper part of the fixed frame; a connecting frame, a connecting frame is connected to the telescopic rod of the cylinder; an extrusion bar, a plurality of extrusion bars are evenly spaced and slidably provided on the connecting frame; a first elastic member, a first elastic member is provided between the extrusion bar and the connecting frame.

[0009] Optionally, the glue injection mechanism specifically includes: a fixed frame, a fixed frame is provided on the rear side of the top of the bonding table; an electric push rod, an electric push rod is provided at the bottom of the fixed frame; a glue injection tube, a glue injection tube is provided on the top of the fixed frame; a movable plate, a movable plate is slidably provided inside the glue injection tube; an electric-controlled glue spraying tube, an electric-controlled glue spraying tube is provided at the lower part of the side of the movable plate close to the bonding table; a sliding rod, a sliding rod is slidably provided inside the glue injection tube and passes through the rear end of the glue injection tube, and the end of the sliding rod close to the bonding table is connected to the movable plate; a connecting rod, a connecting rod is provided between one end of the sliding rod passing through the glue injection tube and the telescopic rod of the electric push rod; a feeding tube, a feeding tube is provided at the rear end of the glue injection tube; a liquid pump, a liquid pump is provided on the feeding tube; a one-way valve, a one-way valve is provided on the rear side of the top of the glue injection tube.

[0010] Optionally, the placement mechanism specifically includes: a sealing box, a sealing box is slidably provided on the upper part of the connecting frame; a second elastic member, a second elastic member is provided between the sealing box and the connecting frame; a top plate, a top plate is provided at the middle part of the side wall of the inner side of the sealing box near the two ends of the extrusion strip; a placement frame, a plurality of placement holes are symmetrically opened at the bottom of the inner side of the bonding table, and the two placement frames are respectively inserted and arranged between the two placement holes corresponding to the front and back of the bonding table, and the placement frame and the extrusion strip are parallel to each other; a moving frame, a moving frame is slidably provided on the top of the placement frame; a wedge bar, wedge bars are symmetrically provided on the top of the two placement frames; a limiting bar, a sliding groove is opened on the side where the two moving frames are close to each other, and a limiting bar is slidably provided in the sliding groove of the moving frame, and the lower part of the limiting bar is an inclined surface and passes through the lower part of the moving frame to contact and cooperate with the wedge bar; a third elastic member, a third elastic member is provided between the limiting bar and the moving frame; an extension plate, an extension plate is provided at the front and rear ends of the moving frame, and the extension plate is in contact and cooperate with the top plate.

[0011] Optionally, a defoaming mechanism is also included, which specifically includes: a bracket, a bracket is provided on the rear side of the top of the laminating table; a defoaming box, a defoaming box is provided on the top of the bracket; a motor, a motor is provided on the top of the defoaming box; a screw rod, a screw rod is rotatably provided in the middle of the inner side of the defoaming box, and the screw rod is connected to the output shaft of the motor through a coupling; a sealing plate, a sealing plate is threadedly provided in the middle of the screw rod; a liquid outlet pipe and a liquid inlet pipe, a liquid outlet pipe and a liquid inlet pipe are provided at the bottom of the defoaming box, and the liquid outlet pipe is connected to the glue injection pipe through the feed pipe; a valve, valves are provided on both the liquid inlet pipe and the liquid outlet pipe.

[0012] Optionally, it also includes: a conveyor belt assembly, a mounting groove is opened at the bottom of the laminating table, and the conveyor belt assembly is arranged in the mounting groove; a second push rod, a second push rod is arranged on the top of the conveyor belt assembly, the upper part of the second push rod passes through the mounting groove and enters the inner side of the laminating table, and a discharge outlet is opened at the lower part of the left side wall of the laminating table.

[0013] Optionally, it also includes: screws, two front and rear screws are rotatably provided on the top of the left side wall of the bonding table, and the threaded parts of the two screws penetrate the left side wall of the bonding table and enter the discharge port; a mounting frame is provided in the discharge port to slide up and down, and the mounting frame cooperates with the screw threads; a roller shaft, a roller shaft is rotatably provided at the bottom of the mounting frame.

[0014] Optionally, it also includes: a fixing bar, a fixing bar for limiting the position of the liquid crystal substrate is provided at the bottom inner side of the bonding platform, and the thickness of the fixing bar is smaller than the liquid crystal substrate; a fixing block, a fixing block is provided at the top of one end of the limiting bar close to the fixing bar, and the fixing block slides in the slide groove of the movable frame.

[0015] Optionally, the present invention provides a method for laminating a black-and-white LCD screen laminating device, which is characterized by comprising the following steps: S1: Control the liquid pump to introduce the optical glue into the glue injection tube and reduce pressure to eliminate bubbles; S2: placing the display panel and the liquid crystal substrate at appropriate positions, and controlling the electronically controlled glue spraying hose to spray glue onto the surface of the display panel; S3: Control the cylinder to drive the connecting frame and the extrusion strip to press down, and the final pressure of the extrusion strip is controlled between 0.1 and 0.2 MPa; S4: Start the conveyor belt assembly 9 to push the bonded LCD to the discharge port; S5: Using ultraviolet light to cure the optical glue and adhesion promoter between the display panel and the liquid crystal substrate.

[0016] The present invention has the following advantages: 1. The present invention performs a bubble elimination treatment on the optical glue in advance by reducing the air pressure to maintain a certain vacuum degree, thereby trying to avoid the bubbles in the optical glue from affecting the bonding of the liquid crystal substrate and the display panel, and injecting the optical glue by injection and then squeezing and bonding, which can ensure that the air is covered by the optical glue and remains between the liquid crystal substrate and the display panel when the optical glue is applied.

[0017] 2. In order to achieve a better defoaming effect, the staff first injects the optical glue into the defoaming box, and then drives the screw to rotate through the motor so that the sealing plate is driven to move upward, so that a certain vacuum degree is maintained in the entire defoaming box and lasts for a long time to ensure that the air in the optical glue is released. When the device is used, the valve of the liquid outlet pipe is opened, and the feed pipe pumps the optical glue from the defoaming box to the liquid injection pipe through the liquid pump for the second defoaming and injection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the first part of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the pressing mechanism of the present invention.

[0021] Figure 4 It is a partial three-dimensional structural schematic diagram of the pressing mechanism of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the glue injection mechanism of the present invention.

[0023] Figure 6 It is a partial three-dimensional structural schematic diagram of the glue injection mechanism of the present invention.

[0024] Figure 7 It is a partial three-dimensional structural sectional view of the glue injection mechanism of the present invention.

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the placement mechanism of the present invention.

[0026] Fig. 9 It is a schematic cross-sectional view of a first partial three-dimensional structure of the placement mechanism of the present invention.

[0027] Fig.10 It is a schematic cross-sectional view of a second partial three-dimensional structure of the placement mechanism of the present invention.

[0028] Fig.11 It is a three-dimensional structural schematic diagram of the defoaming mechanism of the present invention.

[0029] Fig.12 It is a schematic cross-sectional view of the three-dimensional structure of the defoaming mechanism of the present invention.

[0030] Fig.13 It is a schematic diagram of a second partial three-dimensional structure of the present invention.

[0031] Fig.14 It is an exploded view of the three-dimensional structure of the laminating platform, the conveyor belt assembly and the second ejector rod of the present invention.

[0032] Fig.15 It is a schematic diagram of the three-dimensional structure of the screw, the mounting frame and the roller shaft of the present invention.

[0033] The markings of the components in the accompanying drawings are as follows: 1: base, 2: laminating table, 3: heating seat, 4: pressing mechanism, 401: fixing frame, 402: cylinder, 403: connecting frame, 404: extrusion strip, 405: first elastic member, 5: glue injection mechanism, 501: fixing frame, 502: electric push rod, 503: glue injection tube, 504: moving plate, 505: electric control glue injection tube, 506: sliding rod, 507: connecting rod, 508: feeding tube, 509: liquid pump, 510: one-way valve, 6: placing mechanism, 601: sealing box, 602: second elastic member, 6 03: top plate, 604: placement hole, 605: placement rack, 606: moving rack, 607: wedge strip, 608: limit strip, 609: third elastic member, 610: extension plate, 7: defoaming mechanism, 701: bracket, 702: defoaming box, 703: motor, 704: screw rod, 705: sealing plate, 706: liquid outlet pipe, 707: liquid inlet pipe, 708: valve, 8: installation groove, 9: transmission belt assembly, 10: second top rod, 11: discharge port, 12: screw, 13: installation rack, 14: roller shaft, 15: fixing strip, 16: fixing block. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0035] Example 1 like Figures 1 to 10 As shown, the present invention provides a black and white LCD screen bonding device, which specifically includes a base 1, a bonding platform 2, a heating seat 3, a pressing mechanism 4, a glue injection mechanism 5 and a placement mechanism 6; The top of the base 1 is provided with a bonding platform 2, and the top of the inner side of the bonding platform 2 is provided with a heating seat 3; Wherein, the pressing mechanism 4 is arranged on the top of the laminating platform 2 and is used for laminating the LCD screen; The glue injection mechanism 5 is arranged at the top rear side of the base 1 and is used for injecting glue into the liquid crystal substrate; The placement mechanism 6 is arranged inside the bonding platform 2 and is used for positioning and placing the liquid crystal substrate and the display panel.

[0036] The glue injection mechanism 5 specifically includes a fixed frame 501; an electric push rod 502, a glue injection tube 503, a moving plate 504, an electric control glue spraying tube 505, a sliding rod 506, a connecting rod 507, a feed pipe 508, a liquid pump 509 and a one-way valve 510; Among them, a fixed frame 501 is provided on the rear side of the top of the bonding platform 2, an electric push rod 502 is provided at the lower part of the fixed frame 501, a glue injection tube 503 is provided on the upper part of the fixed frame 501, a moving plate 504 is slidably provided inside the glue injection tube 503, an electric-controlled glue spraying tube 505 is provided at the lower part of the moving plate 504 close to the bonding platform 2, a sliding rod 506 is slidably provided inside the glue injection tube 503 and passes through the rear end of the glue injection tube 503, one end of the sliding rod 506 close to the bonding platform 2 is connected to the moving plate 504, a connecting rod 507 is provided between one end of the sliding rod 506 passing through the glue injection tube 503 and the telescopic rod of the electric push rod 502, a feeding pipe 508 is provided at the rear end of the glue injection tube 503, a liquid pump 509 is provided on the feeding pipe 508, and a one-way valve 510 is provided on the rear side of the top of the glue injection tube 503.

[0037] Exemplarily, when the device is used, the staff first connects the feed pipe 508 to the external optical glue storage tank, and then starts the liquid pump 509 to pump a certain amount of optical glue into the glue injection pipe 503. In the initial state, the electric push rod 502 remains in an extended state, and the movable plate 504 is located near the rear end of the glue injection pipe 503. After the optical glue is injected, the liquid pump 509 is turned off, and the staff places the liquid crystal substrate and the display panel on the placement mechanism 6, and then controls the electric push rod 502 to drive the sliding rod 506 and the electric control glue spraying pipe 505 to move toward the bonding platform 2 through the connecting rod 507. The tube head of the electric control glue spraying pipe 505 is finally located between the liquid crystal substrate and the display panel. During the movement of the movable plate 504, the one-way valve 510 and the liquid pump 509 keep the glue injection pipe 503 in a sealed state. The movement of the movable plate 504 increases the volume of the optical glue at the location but reduces the air pressure. The bubbles dissolved in the optical glue are then quickly dispersed from the optical glue to ensure that the light used for the bonding of the liquid crystal panel is There are no obvious bubbles in the optical glue. After the electronically controlled glue spraying tube 505 moves to the final position, the electronically controlled glue spraying tube 505 is started to inject the optical glue in the glue injection tube 503 between the liquid crystal substrate and the display panel. After injecting a certain amount, the electric push rod 502 is controlled again to drive the moving plate 504 and the electronically controlled glue spraying tube 505 to return to the initial position. After multiple starts, the excess can be discharged to the outside from the one-way valve when the moving plate 504 is reset. Then, the liquid crystal substrate and the display panel are squeezed and bonded through the pressing mechanism 4. During this process, the liquid crystal substrate is located on the top of the heating seat 3, and the heating seat 3 keeps the entire bonding process within a certain temperature range. In this way, the device eliminates bubbles in the optical glue in advance by reducing the air pressure to maintain a certain vacuum degree, and tries to avoid bubbles in the optical glue affecting the bonding of the liquid crystal substrate and the display panel. The optical glue is injected and then squeezed and bonded, which can ensure that the air is covered by the optical glue and remains between the liquid crystal substrate and the display panel when the optical glue is applied.

[0038] like Figure 3 and Figure 4As shown, the pressing mechanism 4 specifically includes a fixing frame 401, a cylinder 402, a connecting frame 403, an extrusion strip 404 and a first elastic member 405; Among them, a fixing frame 401 is provided on the top of the bonding platform 2, a cylinder 402 is provided on the top of the fixing frame 401, a connecting frame 403 is connected to the telescopic rod of the cylinder 402, a plurality of extrusion strips 404 are evenly spaced and slidably provided on the connecting frame 403, and a first elastic member 405 is provided between the extrusion strips 404 and the connecting frame 403.

[0039] like Figures 8 to 10 As shown, the placement mechanism 6 specifically includes a sealing box 601, a second elastic member 602, a top plate 603, a placement rack 605, a moving rack 606, a wedge strip 607, a limit strip 608, a third elastic member 609 and an extension plate 610; Among them, a sealing box 601 is slidably provided on the upper part of the connecting frame 403, a second elastic member 602 is provided between the sealing box 601 and the connecting frame 403, a top plate 603 is provided in the middle of the side wall of the inner side of the sealing box 601 near the two ends of the extrusion strip 404, a plurality of placement holes 604 are symmetrically opened at the bottom of the inner side of the bonding platform 2, and two placement racks 605 are respectively inserted between the two corresponding placement holes 604 in the front and back of the bonding platform 2, the placement racks 605 are parallel to the extrusion strip 404, and the tops of the placement racks 605 are all slidable. A movable rack 606 is provided, and wedge-shaped bars 607 are symmetrically provided on the top of the two placement racks 605. A sliding groove is provided on the side where the two movable racks 606 are close to each other. A limiting bar 608 is slidably provided in the sliding groove of the movable rack 606. The lower part of the limiting bar 608 is an inclined surface and passes through the lower part of the movable rack 606 and contacts and cooperates with the wedge bar 607. A third elastic member 609 is provided between the limiting bar 608 and the movable rack 606. Extension plates 610 are provided at the front and rear ends of the movable rack 606, and the extension plates 610 contact and cooperate with the top plate 603.

[0040] When the device is in use, the staff can insert the two placement racks 605 into the placement holes 604 at different positions to adjust the distance between the two placement racks 605 to achieve the purpose of placing liquid crystal glass substrates of different sizes. After setting up the placement racks 605, the staff places the display panel on the top of the bonding table 2, and then places the liquid crystal substrate between the tops of the moving racks 606 of the two placement racks 605. In the initial state, the limit bar 608 is pushed out to the edge of the slide groove of the moving rack 606 by the third elastic member 609, and the inclined surface of the limit bar 608 The movable frame 606 is lifted up by the two limit bars 608 of the movable frame 606, and then the electronically controlled glue spraying tube 505 of the glue injection mechanism 5 extends out and injects the optical glue into the top center of the display panel. After the electronically controlled glue spraying tube 505 retracts, the staff controls the connecting frame 403 to move downward through the cylinder 402, and the movable frame 606 drives the sealing box 601 and the top plate 603 to move downward. During the movement, the top plate 603 first contacts and squeezes the extension plates 610 at both ends of the movable frame 606, and the extension plates 610 drive the movable frame 606 to move downward. The movable frame 606 moves downward, the movable frame 606 moves downward, the wedge-shaped strip 607 forces the limiting strip 608 to slide into the slide groove through the inclined surface of the limiting strip 608, the third elastic member 609 is compressed, the limiting strip 608 is no longer in contact with the liquid crystal substrate, and the liquid crystal substrate falls to the top of the display panel coated with optical glue, and the cylinder 402 continues to drive the connecting frame 403 to move downward, the sealing box 601 contacts the bonding platform 2 and stops moving, the second elastic member 602 is compressed, and the extrusion strip 404 on the connecting frame 403 moves downward with the connecting frame 403 and gradually contacts the top of the liquid crystal substrate. The liquid crystal substrate is pressed and fitted, and the pressing surface formed by the multiple pressing strips 404 can well adapt to liquid crystal displays of different specifications, and the pressing surface for operation will not be unable to contact the liquid crystal display due to the obstruction of the placement frame 605. After the pressing is completed, the cylinder 402 drives the connecting frame 403 and the sealing box 601 to move upward and return to the initial position, and the sealing box 601 and the limiting strip 608 return to the initial position under the action of the second elastic member 602 and the third elastic member 609 respectively, so that the staff can replace the liquid crystal substrate and the display panel for the next operation.

[0041] Example 2 like Fig.11 and Fig.12As shown, on the basis of Example 1, a defoaming mechanism 7 is further included, and the defoaming mechanism 7 specifically includes a bracket 701, a defoaming box 702, a motor 703, a screw 704, a sealing plate 705, a liquid outlet pipe 706, a liquid inlet pipe 707 and a valve 708. A bracket 701 is provided on the rear side of the top of the bonding table 2, a defoaming box 702 is provided on the top of the bracket 701, a motor 703 is provided on the top of the defoaming box 702, a screw 704 is rotatably provided on the middle part of the inner side of the defoaming box 702, the screw 704 is connected to the output shaft of the motor 703 through a coupling, a sealing plate 705 is threadedly provided on the middle part of the screw 704, a liquid outlet pipe 706 and a liquid inlet pipe 707 are provided at the bottom of the defoaming box 702, the liquid outlet pipe 706 is connected to the glue injection pipe 503 through the feeding pipe 508, and valves 708 are provided on the liquid inlet pipe 707 and the liquid outlet pipe 706.

[0042] In order to achieve a better defoaming effect, the staff first connects the liquid inlet pipe 707 of the defoaming box 702 to the external storage container before using the device. In the initial state, the seal is located at the bottom of the defoaming box 702. Before starting the device, first open the valve 708 of the liquid inlet pipe 707, and then drive the screw 704 to rotate forward through the motor 703, so that the sealing plate 705 is driven to move upward, and the optical glue is sucked into the defoaming box 702 under the action of negative pressure. When the optical glue is sucked to a certain amount, the staff closes the valve 708 of the liquid inlet pipe 707, and the motor 703 continues to drive the sealing plate 705 to move upward through the screw 704, so that a certain vacuum degree is maintained in the entire defoaming box 702 and the duration is long, ensuring that the air in the optical glue is released. When the device is used, open the valve 708 of the liquid outlet pipe 706, and the feed pipe 508 pumps the optical glue from the defoaming box 702 to the injection pipe through the liquid pump 509 to perform the second defoaming and injection operations.

[0043] like Fig.13 and Fig.14 As shown, on the basis of Example 1, it specifically includes a conveyor belt assembly 9 and a second push rod 10. A mounting groove 8 is opened at the bottom of the bonding platform 2, and a conveyor belt assembly 9 is arranged in the mounting groove 8. A second push rod 10 is arranged on the top of the conveyor belt assembly 9. The upper part of the second push rod 10 passes through the mounting groove 8 and enters the inner side of the bonding platform 2. A discharge port 11 is opened at the lower part of the left side wall of the bonding platform 2.

[0044] When the LCD display is bonded, the conveyor belt assembly 9 starts to drive the second push rod 10 to slide in the installation groove 8. The bonded LCD passes through the bottom of the placement rack 605 under the push of the second push rod 10, and is finally pushed out of the bonding table 2 from the discharge port 11. The staff can then re-place a new LCD substrate and display panel to proceed to the next operation.

[0045] like Fig.13 and Fig.15As shown, on the basis of Example 1, it specifically includes a screw 12, a mounting frame 13 and a roller shaft 14. Two front and rear screws 12 are rotatably provided on the top of the left side wall of the bonding platform 2. The threaded parts of the two screws 12 penetrate the left side wall of the bonding platform 2 and enter the discharge port 11. A mounting frame 13 is slidably provided in the discharge port 11. The mounting frame 13 is threadably matched with the screw 12, and a roller shaft 14 is rotatably provided at the bottom of the mounting frame 13.

[0046] When the LCD display is pushed out from the discharge port 11 by the second push rod 10, the LCD display will contact the rolling shaft 14. The staff can control the position of the mounting frame 13 and the rolling shaft 14 by rotating the screw 12, so that when the LCD display is pushed out, it can undergo a rolling effect of the rolling shaft 14 to ensure the final bonding effect.

[0047] like Figure 1 , Figure 2 and Fig.10 As shown, based on Example 1, a fixing bar 15 and a fixing block 16 are specifically included. A fixing bar 15 for limiting the position of the liquid crystal substrate is provided at the bottom inner side of the bonding table 2. The thickness of the fixing bar 15 is smaller than that of the liquid crystal substrate. A fixing block 16 is provided at the top of one end of the limiting bar 608 close to the fixing bar 15. The fixing block 16 slides in the slide groove of the movable frame 606.

[0048] The fixing block 16 and the fixing bar 15 can limit the position of the liquid crystal substrate and the display panel when they are placed. After they are stably placed, the two are aligned up and down, which is convenient for the staff to place them.

[0049] Example 3 The present invention provides a method for laminating a black-and-white LCD screen laminating device, which is characterized by comprising the following steps: S1: Control the liquid pump 509 to introduce the optical glue into the glue injection tube 503 and decompress and defoam; S2: placing the display panel and the liquid crystal substrate at appropriate positions, and controlling the electronically controlled glue spraying tube 505 to spray glue onto the surface of the display panel; S3: Control the air cylinder 402 to drive the connecting frame 403 and the extrusion bar 404 to press down, and the final pressure of the extrusion bar 404 is controlled between 0.1 and 0.2 MPa; S4: Start the conveyor belt assembly 9 to push the bonded LCD to the discharge port; S5: Using ultraviolet light to cure the optical glue and adhesion promoter between the display panel and the liquid crystal substrate.

[0050] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A black and white LCD screen laminating device, characterized in that: include: A base (1) and a bonding platform (2), wherein the bonding platform (2) is provided on the top of the base (1); A heating seat (3), wherein a heating seat (3) is provided on the inner top of the laminating platform (2); A laminating mechanism (4), wherein the top of the laminating platform (2) is provided with a laminating mechanism (4) for laminating the LCD screen; A glue injection mechanism (5), wherein a glue injection mechanism (5) for injecting glue into the liquid crystal substrate is provided on the rear side of the top of the base (1); A placement mechanism (6) is provided on the inner side of the bonding platform (2) for positioning and placing the liquid crystal substrate and the display panel.

2. A black and white LCD screen laminating device according to claim 1, characterized in that: The pressing mechanism (4) specifically further comprises: A fixing frame (401), wherein a fixing frame (401) is provided on the upper part of the laminating platform (2); A cylinder (402), wherein the upper portion of the fixed frame (401) is provided with a cylinder (402); A connecting frame (403), the telescopic rod of the cylinder (402) is connected to the connecting frame (403); Extrusion bars (404), a plurality of extrusion bars (404) are evenly spaced and slidably arranged on the connecting frame (403); The first elastic member (405) is provided between the extrusion strip (404) and the connecting frame (403).

3. A black and white LCD screen laminating device according to claim 2, characterized in that: The glue injection mechanism (5) specifically includes: A fixing frame (501), wherein the laminating platform (2) is provided with a fixing frame (501); An electric push rod (502), the fixed frame (501) is provided with the electric push rod (502); A glue injection tube (503), wherein the fixed frame (501) is provided with a glue injection tube (503); A movable plate (504) is slidably provided inside the glue injection tube (503); An electrically controlled glue spraying hose (505), wherein the outer side of the movable plate (504) is provided with an electrically controlled glue spraying hose (505); A slide bar (506), wherein the glue injection tube (503) is provided with a slide bar (506); A connecting rod (507) is provided between the sliding rod (506) and the telescopic rod of the electric push rod (502); A feed pipe (508), the glue injection pipe (503) is provided with a feed pipe (508); A liquid pump (509), wherein the feed pipe (508) is provided with a liquid pump (509); One-way valve (510): a one-way valve (510) is provided on the top of the glue injection tube (503).

4. A black and white LCD screen laminating device according to claim 3, characterized in that: The placement mechanism (6) specifically also includes: A sealing box (601), a sealing box (601) is provided on the upper part of the connecting frame (403); A top plate (603), a top plate (603) is provided on the inner side wall of the sealed box (601); A placement rack (605), wherein two placement racks (605) are respectively inserted and arranged on the top of the laminating platform (2); The movable rack (606) and the placement rack (605) are both slidably provided on the top of the movable rack (606); Wedge-shaped bars (607), the tops of the two placement racks (605) are symmetrically provided with wedge-shaped bars (607); A limit bar (608), a sliding groove is provided on the side of the two movable racks (606) close to each other, and a limit bar (608) is slidably provided in the sliding groove of the movable rack (606); A third elastic member (609), a third elastic member (609) is provided between the limiting strip (608) and the movable frame (606); Extension plates (610): extension plates (610) are provided at the front and rear ends of the movable frame (606).

5. A black and white LCD screen laminating device according to claim 4, characterized in that: The invention also includes a defoaming mechanism (7), which specifically includes: A support (701), the support (701) is provided on the rear side of the top of the laminating platform (2); a defoaming box (702), the defoaming box (702) is provided on the top of the support (701); A motor (703) is provided on the top of the defoaming box (702); a screw rod (704) is rotatably provided in the middle of the inner side of the defoaming box (702), and the screw rod (704) is connected to the output shaft of the motor (703) via a coupling; A sealing plate (705) is provided in a threaded manner at the middle of the screw rod (704); A liquid outlet pipe (706) and a liquid inlet pipe (707), wherein the bottom of the defoaming box (702) is provided with a liquid outlet pipe (706) and a liquid inlet pipe (707), and the liquid outlet pipe (706) is connected to the glue injection pipe (503) through the feed pipe (508); Valve (708), valves (708) are provided on both the liquid inlet pipe (707) and the liquid outlet pipe (706).

6. A black and white LCD screen laminating device according to claim 5, characterized in that: include: A conveyor belt assembly (9), wherein a mounting groove (8) is provided at the bottom of the laminating platform (2), and a conveyor belt assembly (9) is arranged in the mounting groove (8); A second push rod (10) is provided on the top of the conveyor belt assembly (9), and the upper portion of the second push rod (10) passes through the mounting groove (8) and enters the inner side of the bonding platform (2). A discharge port (11) is provided at the lower portion of the left side wall of the bonding platform (2).

7. A black and white LCD screen laminating device according to claim 6, characterized in that: include: Screws (12), two screws (12) are rotatably provided at the top of the left side wall of the laminating platform (2) at the front and rear ends, and the threaded parts of the two screws (12) both penetrate the left side wall of the laminating platform (2) and enter the discharge port (11); A mounting frame (13), the mounting frame (13) is provided in the discharge port (11) in a manner that it can slide up and down, and the mounting frame (13) is threadably matched with the screw (12); A roller pressing shaft (14) is rotatably provided at the bottom of the mounting frame (13).

8. A black and white LCD screen laminating device according to claim 7, characterized in that: include: A fixing strip (15), wherein the fixing strip (15) for limiting the position of the liquid crystal substrate is provided at the inner bottom of the laminating platform (2), and the thickness of the fixing strip (15) is smaller than that of the liquid crystal substrate; A fixing block (16) is provided on the top of one end of the limiting strip (608) close to the fixing strip (15), and the fixing block (16) slides in the slide groove of the movable frame (606).

9. A method for laminating a black-and-white LCD screen according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Control the liquid pump (509) to introduce the optical glue into the glue injection tube (503) and reduce the pressure to eliminate bubbles; S2: placing the display panel and the liquid crystal substrate at appropriate positions, and controlling the electronically controlled glue spraying hose (505) to spray glue onto the surface of the display panel; S3: Control the air cylinder (402) to drive the connecting frame (403) and the extrusion bar (404) to press downward, and the final downward pressure of the extrusion bar (404) is controlled to be between 0.1 and 0.2 MPa; S4: starting the conveyor belt assembly (9) to push the bonded liquid crystal display toward the discharge outlet; S5: Using ultraviolet light to cure the optical glue and adhesion promoter between the display panel and the liquid crystal substrate.

Images