Liquid crystal injection device and method for LCD manufacturing

Abstract

The application relates to the technical field of liquid crystal filling, in particular to a liquid crystal filling device and method for LCD manufacturing, which comprises a base, a feeding seat, a first conveying belt, a discharging seat and a second conveying belt, the feeding seat is arranged on the base, a controller is arranged on the base, the first conveying belt is movably arranged on the feeding seat, the discharging seat is movably arranged on the base, the second conveying belt is movably arranged on the discharging seat, the filling device further comprises an electric guide rail, a moving seat, a material injection box and an empty box mounting assembly, the electric guide rail is arranged on the base, the moving seat is movably arranged on the electric guide rail and connected with the discharging seat, the empty box mounting assembly is arranged on the base, and the material injection box is arranged on the base. The whole device has high automation, can realize the vacuum pumping and liquid crystal filling method, shortens the liquid crystal empty box filling period, and reduces the labor input.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid crystal filling, in particular to a liquid crystal filling device and method for LCD manufacturing. BACKGROUND

[0002] A conventional LCD liquid crystal display panel generally comprises a color film substrate, a liquid crystal layer and a thin film transistor array substrate. The color film substrate and the thin film transistor array substrate are combined into one body, and the liquid crystal layer is arranged between the color film substrate and the thin film transistor array substrate.

[0003] In the production and processing process of an LCD liquid crystal display screen, liquid crystal needs to be filled into a liquid crystal empty box. Vacuum filling is one of common methods for liquid crystal filling. The existing vacuum liquid crystal filling device has a simple structure, and manual control is required for the input and output of the liquid crystal empty box, the vacuumizing work of the liquid crystal empty box and the opening work of the filling valve of the liquid crystal empty box, which is very inconvenient and leads to a long filling cycle. SUMMARY

[0004] The present application aims to provide a liquid crystal filling device for LCD manufacturing to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme.

[0006] A liquid crystal filling device for LCD manufacturing comprises a base, a feeding seat, a first conveying belt, a discharging seat and a second conveying belt. The feeding seat is arranged on the base, and a controller is arranged on the base. The first conveying belt is movably arranged on the feeding seat. The discharging seat is movably arranged on the base. The second conveying belt is movably arranged on the discharging seat. The filling device further comprises an electric guide rail, a moving seat, a feeding tank and an empty box mounting assembly. The electric guide rail is arranged on the base. The moving seat is movably arranged on the electric guide rail and connected with the discharging seat. The empty box mounting assembly is arranged on the base, used for receiving the liquid crystal empty box conveyed by the first conveying belt and inputting the filled liquid crystal empty box into the second conveying belt. The feeding tank is arranged on the base, used for inputting liquid crystal into the liquid crystal empty box.

[0007] The further technical scheme of the present application is: the empty box mounting assembly comprises a mounting box, an electric telescopic rod, a gear, a rack, a sealing module and a limiting module, a support frame is arranged on the base, the mounting box is movably arranged on the support frame and located on one side of the material injection box, a discharging window matched with the material injection box is arranged on the mounting box, a one-way valve is arranged in the discharging window, the gear is movably arranged on the support frame and connected with the mounting box, a mounting groove matched with the liquid crystal empty box is formed in the mounting box, the sealing module is arranged on the mounting box and used for controlling the opening and closing of the discharging window and vacuumizing the liquid crystal empty box, and the limiting module is arranged on the mounting box and used for limiting the liquid crystal empty box in the mounting groove.

[0008] The further technical scheme of the present application is: the sealing module comprises a sealing structure and an air extraction structure, the sealing structure is arranged on the mounting box and used for controlling the opening and closing of the discharging window, the air extraction structure is arranged on the mounting box and communicated with the mounting groove, the air extraction structure is connected with the sealing structure, and the sealing structure controls the air extraction structure to work synchronously when working and extracts air in the liquid crystal empty box.

[0009] The further technical scheme of the present application is: the sealing structure comprises a contact plate, a push arm, a sliding block and a sealing plate, the contact plate is movably arranged on the inner side of the mounting box, the sliding block is movably arranged on the outer side of the mounting box through a guide rod, magnetic blocks that meet and attract each other are arranged on the contact plate and the sliding block, the sealing plate is slidably arranged through the mounting box, a matched connecting window matched with the discharging window is arranged on the sealing plate, the discharging window is located on the movement path of the connecting window, one end of the sealing plate is movably connected with the push arm and the sliding block, the other end of the sealing plate is connected with the air extraction structure, an air exhaust groove communicated with the mounting groove is arranged on the sealing plate, a connecting hole communicated with the air exhaust groove is arranged on the mounting box, and the connecting hole is communicated with the air extraction structure.

[0010] The further technical scheme of the present application is: the air extraction structure comprises a push plate, a pipe support, a piston rod and air extraction pipes, the air extraction pipes are arranged on the mounting box through the pipe support and the number of the air extraction pipes is several, the push plate is movably arranged in a guide groove formed in the mounting box, the push plate is connected with the sealing plate, the piston rod is movably arranged in each air extraction pipe, one end of the piston rod away from the air extraction pipe is connected with the push plate, and an air extraction hole is arranged on the air extraction pipe and communicated with the connecting hole.

[0011] The further technical scheme of the present application is: the limiting module comprises a limiting structure and a monitoring structure, the monitoring structure is arranged on the support frame and connected with the mounting box, and is used for monitoring the rotation angle of the mounting box; the limiting structure is arranged on the mounting box and away from one side of the blanking window, and is used for limiting the moving direction of the liquid crystal empty box in the mounting groove; the limiting structure and the monitoring structure are electrically connected; and the monitoring structure controls the limiting structure to be invalid when the rotation angle of the mounting box reaches a set angle.

[0012] The further technical scheme of the present application is: the limiting structure comprises a hinged block, a limiting plate and an electromagnet, the hinged block is movably arranged in the slide rail formed on the mounting box and elastically connected with the slide rail, an iron block is arranged in the hinged block, the electromagnet is arranged on the mounting box and located at one side of the hinged block, the electromagnet and the monitoring structure are electrically connected, one end of the limiting plate is hinged to the hinged block, and the mounting box is formed with a storage groove matched with the limiting plate in sliding.

[0013] The further technical scheme of the present application is: the monitoring structure comprises a monitoring box, a conductive block and a conductive disc, the monitoring box is arranged on the support frame, the conductive disc is movably arranged in the monitoring box and connected with the mounting box, the conductive block is arranged on the inner wall of the monitoring box and located on the moving path of the conductive disc, and the conductive disc, the conductive block and the electromagnet are electrically connected.

[0014] The further technical scheme of the present application is: the injection box comprises a liquid storage tank, an adapter, an air pump, a sealing box and an extrusion plate, the liquid storage tank is arranged on the base, the adapter is movably arranged at the discharge port of the liquid storage tank and matched with the blanking window, the adapter and the liquid storage tank are elastically connected, the extrusion plate is movably arranged in the extrusion notch formed on the liquid storage tank, the extrusion plate and the liquid storage tank are elastically connected, the sealing box is arranged on the base, the extrusion notch is arranged on the inner side of the sealing box, and the air pump is arranged on the sealing box.

[0015] A liquid crystal filling method for LCD manufacturing is applied to the liquid crystal filling device in the above technical scheme, and the specific steps of the liquid crystal filling method are as follows:

[0016] S100: placing the liquid crystal empty box on the feeding seat, and controlling the first conveying belt to work to control the moving direction of the liquid crystal empty box towards the empty box mounting assembly through the controller;

[0017] S200: receiving the liquid crystal empty box through the empty box mounting assembly, the empty box mounting assembly can vacuumize the inside of the liquid crystal empty box when working, and can control the injection box to work to fill the liquid crystal into the liquid crystal empty box;

[0018] S300: finally, controlling the empty box mounting assembly to work to input the filled liquid crystal empty box into the discharging seat, and discharging the liquid crystal empty box through the second conveying belt.

[0019] Compared with the prior art, the technical scheme provided by the embodiment of the present application has the following beneficial effects:

[0020] The embodiment of the present application sets the empty box mounting assembly, and utilizes the linkage structure between the sealing structure and the air extraction structure to control the sealing structure to work in the process of installing the box into the installation groove. The sealing structure can control the communication between the blanking window and the mating window on one hand, so that the installation groove and the injection box body are connected and docked. On the other hand, the sealing structure can control the air extraction structure to work to extract the air in the liquid crystal empty box. At the same time, the extension and retraction of the electric telescopic rod are utilized to control the rotation of the installation box to dock with the feeding seat and the discharging seat respectively, so as to realize the automatic feeding and discharging of the installation box. The whole device has high automation, shortens the filling period of the liquid crystal empty box on the premise of realizing the vacuum filling liquid crystal method, and reduces the labor input. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic diagram of the liquid crystal filling device for LCD manufacturing in the embodiment of the present application;

[0022] Figure 2 FIG. 2 is a partial structural schematic diagram of the injection box body in the liquid crystal filling device for LCD manufacturing in the embodiment of the present application;

[0023] Figure 3 FIG. 3 is a structural schematic diagram of the empty box mounting assembly in the liquid crystal filling device for LCD manufacturing in the embodiment of the present application;

[0024] Figure 4 FIG. 4 is a partial sectional view of the installation box in the liquid crystal filling device for LCD manufacturing in the embodiment of the present application;

[0025] Figure 5 FIG. 5 is a structural schematic diagram of the sealing structure in the liquid crystal filling device for LCD manufacturing in the embodiment of the present application;

[0026] Figure 6 FIG. 6 is a structural schematic diagram of the monitoring structure in the liquid crystal filling device for LCD manufacturing in the embodiment of the present application;

[0027] Figure 7 FIG. 7 is a structural schematic diagram of the limiting structure in the liquid crystal filling device for LCD manufacturing in the embodiment of the present application;

[0028] Figure 8 FIG. 8 is a structural schematic diagram of the air extraction structure in the liquid crystal filling device for LCD manufacturing in the embodiment of the present application.

[0029] Explanation of the reference numerals in the schematic diagram:

[0030] 1-sealing box, 2-controller, 3-base, 4-feeding seat, 5-first conveying belt, 6-electric guide rail, 7-moving seat, 8-discharging seat, 9-second conveying belt, 10-air pump, 11-liquid storage box, 12-fitting head, 13-electric telescopic rod, 14-rack, 15-gear, 16-mounting box, 17-supporting frame, 18-exhaust pipe, 19-pipe frame, 20-piston rod, 21-exhaust hole, 22-pushing plate, 23-guide groove, 24-connection hole, 25-resisting plate, 26-mounting groove, 27-guiding rod, 28-sliding block, 29-magnetic block, 30-pushing arm, 31-sealing plate, 32-fitting window, 33-exhaust groove, 34-discharging window, 35-monitoring box, 36-conducting disc, 37-conducting block, 38-sliding rail, 39-storing groove, 40-hinged block, 41-limiting plate, 42-electromagnet, 43-pressing plate. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. The present application will be further described below with reference to the embodiments.

[0032] Please refer to Figures 1-8 In an embodiment of the present application, a liquid crystal filling device for LCD manufacturing includes a base 3, a feeding seat 4, a first conveying belt 5, a discharging seat 8 and a second conveying belt 9. The feeding seat 4 is arranged on the base 3. The base 3 is provided with a controller 2. The first conveying belt 5 is movably arranged on the feeding seat 4. The discharging seat 8 is movably arranged on the base 3. The second conveying belt 9 is movably arranged on the discharging seat 8. The filling device further includes an electric guide rail 6, a moving seat 7, a filling box body and a empty box mounting assembly. The electric guide rail 6 is arranged on the base 3. The moving seat 7 is movably arranged on the electric guide rail 6 and connected with the discharging seat 8. The empty box mounting assembly is arranged on the base 3, used for receiving the liquid crystal empty box conveyed by the first conveying belt 5 and inputting the liquid crystal empty box filled into the second conveying belt 9. The filling box body is arranged on the base 3, used for inputting liquid crystal into the liquid crystal empty box.

[0033] In the embodiment, the box mounting assembly comprises the mounting box 16, the electric telescopic rod 13, the gear 15, the rack 14, a sealing module and a limiting module. The support frame 17 is arranged on the base 3. The mounting box 16 is movably arranged on the support frame 17 and located at one side of the material injection box. The material injection box is provided with the discharging window 34. The one-way valve is arranged in the discharging window 34. The gear 15 is movably arranged on the support frame 17 and connected with the mounting box 16. The mounting box 16 is formed with the mounting groove 26 matched with the liquid crystal box. The sealing module is arranged on the mounting box 16, used for controlling the opening and closing of the discharging window 34 and vacuumizing the liquid crystal box. The limiting module is arranged on the mounting box 16, used for limiting the liquid crystal box in the mounting groove 26.

[0034] In actual application, the liquid crystal box is placed on the feeding base 4. The controller 2 is used to control the first conveying belt 5 to work and control the liquid crystal box to move towards the box mounting assembly. The liquid crystal box is received by the box mounting assembly. In this process, the sealing module is controlled to work and vacuumize the liquid crystal box. At the same time, the limiting module is used to limit the liquid crystal box in the mounting groove 26. At the same time, the material injection box is controlled to work and fill the liquid crystal into the liquid crystal box. Finally, the controller 2 is used to control the electric telescopic rod 13 to extend, so as to drive the rack 14 to move. Under the meshing action between the rack 14 and the gear 15, the mounting box 16 is driven to rotate, so that the mounting box 16 is separated from the feeding base 4 and connected with the discharging base 8. At this time, the limiting module is automatically disabled, so that the filled liquid crystal box is discharged into the discharging base 8. The second conveying belt 9 is used to work and discharge the liquid crystal box, so as to complete the liquid crystal filling work of the liquid crystal box.

[0035] Please refer to Figures 1-8 As another preferred embodiment of the present application, the sealing module comprises a sealing structure and an air extraction structure. The sealing structure is arranged on the mounting box 16 and used for controlling the opening and closing of the discharging window 34. The air extraction structure is arranged on the mounting box 16 and communicated with the mounting groove 26. The air extraction structure is connected with the sealing structure. When the sealing structure works, the air extraction structure is controlled to work synchronously and extract the air in the liquid crystal box.

[0036] In one specific case of the embodiment, the sealing structure comprises the abutting plate 25, the push arm 30, the sliding block 28 and the sealing plate 31, the abutting plate 25 is movably arranged on the inner side of the mounting box 16, the sliding block 28 is movably arranged on the outer side of the mounting box 16 through the guide rod 27, the abutting plate 25 and the sliding block 28 are both provided with the magnetic block 29 which meets and attracts each other, the sealing plate 31 is slidably arranged through the mounting box 16, the sealing plate 31 is provided with the matching window 32 which matches the blanking window 34, the blanking window 34 is located on the moving path of the matching window 32, one end of the sealing plate 31 is movably connected through the push arm 30 and the sliding block 28, the other end of the sealing plate 31 is connected with the air extraction structure, the sealing plate 31 is provided with the exhaust groove 33 which communicates with the mounting groove 26, the mounting box 16 is provided with the connecting hole 24 which communicates with the exhaust groove 33, and the connecting hole 24 communicates with the air extraction structure.

[0037] In another specific case of the embodiment, the air extraction structure comprises the push plate 22, the pipe rack 19, the piston rod 20 and the air extraction pipe 18, the air extraction pipe 18 is in plurality and is arranged on the mounting box 16 through the pipe rack 19, the push plate 22 is movably arranged on the guide groove 23 formed on the mounting box 16, and the push plate 22 is connected with the sealing plate 31, the piston rod 20 is movably arranged in each air extraction pipe 18, one end of the piston rod 20 away from the air extraction pipe 18 is connected with the push plate 22, and the air extraction pipe 18 is provided with the air extraction hole 21 which communicates with the connecting hole 24.

[0038] It should be particularly pointed out that in the embodiment, the magnetic block 29 is not limited to control the synchronous movement of the abutting plate 25 and the sliding block 28, and the electromagnetic body or the permanent magnet can also be used instead, which will not be listed here.

[0039] When the first conveying belt 5 places the liquid crystal empty box in the mounting groove 26, the liquid crystal empty box moves along the mounting groove 26 and meets and abuts against the abutting plate 25, which drives the abutting plate 25 to move along the mounting groove 26, under the action of the magnet, the sliding block 28 can be driven to move synchronously, under the action of the push arm 30, the sealing plate 31 can be driven to move relative to the mounting box 16, in this process, the piston rod 20 can be driven to move synchronously, in the movement process of the piston rod 20, the air in the mounting groove 26 and the liquid crystal empty box can be extracted into the air extraction pipe 18 along the exhaust groove 33 and the connecting hole 24, so as to realize the vacuum extraction work of the liquid crystal empty box, until the matching window 32 meets and connects with the blanking window 34, then the filling work of the liquid crystal empty box is completed by controlling the work of the liquid injection box to discharge the liquid crystal along the blanking window 34 into the liquid crystal empty box.

[0040] Please refer to Figures 1-8As another preferred embodiment of the present application, the limiting module comprises a limiting structure and a monitoring structure, the monitoring structure is arranged on the support frame 17 and connected with the mounting box 16, and is used for monitoring the rotating angle of the mounting box 16, the limiting structure is arranged on the mounting box 16 and away from the side of the blanking window 34, and is used for limiting the moving direction of the liquid crystal empty box in the mounting groove 26, the limiting structure and the monitoring structure are electrically connected, and the monitoring structure controls the limiting structure to be invalid when the rotating angle of the mounting box 16 reaches the set angle.

[0041] In one specific case of the present embodiment, the limiting structure comprises a hinged block 40, a limiting plate 41 and an electromagnet 42, the hinged block 40 is movably arranged in the slide rail 38 formed on the mounting box 16 and elastically connected with the slide rail 38, an iron block is arranged in the hinged block 40, the electromagnet 42 is arranged on the mounting box 16 and located at one side of the hinged block 40, the electromagnet 42 and the monitoring structure are electrically connected, one end of the limiting plate 41 is hinged on the hinged block 40, and the mounting box 16 is formed with a storage groove 39 which is matched with the limiting plate 41 in sliding.

[0042] In another specific case of the present embodiment, the monitoring structure comprises a monitoring box 35, a conductive block 37 and a conductive disc 36, the monitoring box 35 is arranged on the support frame 17, the conductive disc 36 is movably arranged in the monitoring box 35 and connected with the mounting box 16, the conductive block 37 is arranged on the inner wall of the monitoring box 35 and located on the moving path of the conductive disc 36, and the conductive disc 36, the conductive block 37 and the electromagnet 42 are electrically connected.

[0043] It should be noted that the injection box body comprises a liquid storage tank 11, an adapter 12, an air pump 10, a sealing box 1 and an extrusion plate 43, the liquid storage tank 11 is arranged on the base 3, the adapter 12 is movably arranged at the discharge port of the liquid storage tank 11 and matched with the blanking window 34, the adapter 12 and the liquid storage tank 11 are elastically connected, the extrusion plate 43 is movably arranged in the extrusion recess formed on the liquid storage tank 11, the extrusion plate 43 and the liquid storage tank 11 are elastically connected, the sealing box 1 is arranged on the base 3, the extrusion recess is arranged on the inner side of the sealing box 1, and the air pump 10 is arranged on the sealing box 1.

[0044] It should be particularly pointed out that in the present embodiment, the monitoring structure is not limited to the above-mentioned monitoring structure for monitoring the rotating angle of the mounting box 16, and an infrared distance measuring sensor or a laser distance measuring sensor can also be used to monitor the moving distance of the rack 14 to determine the rotating angle of the mounting box 16, which will not be enumerated one by one in the present embodiment.

[0045] When the liquid crystal empty box is placed in the installation groove 26, the liquid crystal empty box extrudes the limiting plate 41, so that the limiting plate 41 enters the storage groove 39, and the liquid crystal empty box moves from one side of the limiting plate 41 to the other side. During the process, the limiting plate 41 limits the liquid crystal empty box. After the vacuumizing work on the liquid crystal empty box is completed, the air pump 10 is controlled to work, so that air can be input into the sealed box 1. Under the action of air pressure, the extrusion plate 43 can be controlled to move along the extrusion notch and input the liquid crystal into the liquid crystal empty box through the adapter 12 for filling work. After the filling work on the liquid crystal empty box is completed, the installation box 16 is rotated by 180° by controlling the electric telescopic rod 13 to work. During the process, the conductive disc 36 can be driven to rotate relative to the monitoring box 35, so that the conductive disc 36 meets the conductive block 37 and the electromagnet 42 is electrified to attract the iron block, so that the hinged block 40 moves along the slide rail 38 and the limiting plate 41 is separated from the limiting work on the liquid crystal empty box. At this time, the liquid crystal empty box can fall into the discharge seat 8 under the action of gravity and finally be discharged with the second conveying belt 9.

[0046] Please refer to Figures 1-8 In another embodiment of the present application, a liquid crystal filling method for LCD manufacturing is applied to the liquid crystal filling device described in the above embodiment. The specific steps of the liquid crystal filling method are as follows.

[0047] S100: Place the liquid crystal empty box on the feeding seat 4, and control the first conveying belt 5 to work by the controller 2 to control the liquid crystal empty box to move towards the empty box installation assembly.

[0048] S200: Receive the liquid crystal empty box by the empty box installation assembly. When the empty box installation assembly works, the inside of the liquid crystal empty box can be vacuumized, and the liquid crystal can be filled into the liquid crystal empty box by controlling the filling box body to work.

[0049] S300: Finally, control the empty box installation assembly to work to input the filled liquid crystal empty box into the discharge seat 8, and discharge the liquid crystal empty box by the second conveying belt 9.

[0050] The above description of the present application and its embodiments is illustrative and not restrictive. The embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it, without departing from the purpose of the present application, similar structural modes and embodiments can be designed without creativity, which should belong to the protection scope of the present application.

[0051] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A liquid crystal filling device for LCD manufacturing, comprising a base, a feeding seat, a first conveying belt, a discharging seat and a second conveying belt, the feeding seat is arranged on the base, a controller is arranged on the base, the first conveying belt is movably arranged on the feeding seat, the discharging seat is movably arranged on the base, and the second conveying belt is movably arranged on the discharging seat, characterized in that, The perfusion device further comprises an electric guide rail, a moving seat, a material injection box, and an empty box mounting assembly, the electric guide rail is arranged on the base, the moving seat is movably arranged on the electric guide rail and connected with the material discharge seat, the empty box mounting assembly is arranged on the base and used for receiving the liquid crystal empty box conveyed by the first conveying belt and inputting the liquid crystal empty box filled with liquid crystal into the second conveying belt, and the material injection box is arranged on the base and used for inputting liquid crystal into the liquid crystal empty box; the empty box mounting assembly comprises a mounting box, an electric telescopic rod, a gear, a rack, a sealing module, and a limiting module, the base is provided with a support frame, the mounting box is movably arranged on the support frame and located on one side of the material injection box, the mounting box is provided with a discharging window matched with the material injection box, the discharging window is provided with a one-way valve, the gear is movably arranged on the support frame and connected with the mounting box, the mounting box is formed with a mounting groove matched with the liquid crystal empty box, the sealing module is arranged on the mounting box and used for controlling the opening and closing of the discharging window and vacuumizing the liquid crystal empty box, and the limiting module is arranged on the mounting box and used for limiting the moving direction of the liquid crystal empty box in the mounting groove.

2. The liquid crystal filling apparatus for manufacturing an LCD according to claim 1, wherein The sealing module comprises a sealing structure and an air extraction structure, the sealing structure is arranged on the mounting box and used for controlling the opening and closing of the discharging window, and the air extraction structure is arranged on the mounting box and communicated with the mounting groove, the air extraction structure is connected with the sealing structure, and the sealing structure controls the air extraction structure to work synchronously when working and extracts air in the liquid crystal empty box.

3. The liquid crystal filling apparatus for manufacturing an LCD according to claim 2, wherein The sealing structure comprises a contact plate, a push arm, a sliding block, and a sealing plate, the contact plate is movably arranged on the inner side of the mounting box, the sliding block is movably arranged on the outer side of the mounting box through a guide rod, the contact plate and the sliding block are both provided with magnet blocks that meet and attract each other, the sealing plate is slidably arranged through the mounting box, the sealing plate is provided with a matching window matched with the discharging window, the discharging window is located on the moving path of the matching window, one end of the sealing plate is movably connected through the push arm and the sliding block, the other end of the sealing plate is connected with the air extraction structure, the sealing plate is provided with an exhaust groove communicated with the mounting groove, the mounting box is provided with a connecting hole communicated with the exhaust groove, and the connecting hole is communicated with the air extraction structure.

4. The liquid crystal filling apparatus for manufacturing an LCD according to claim 3, wherein The air extraction structure comprises a push plate, a pipe frame, a piston rod, and air extraction pipes, the air extraction pipes are arranged on the mounting box through the pipe frame, the push plate is movably arranged in a guide groove formed on the mounting box, the push plate is connected with the sealing plate, the piston rod is movably arranged in each air extraction pipe, one end of the piston rod away from the air extraction pipe is connected with the push plate, the air extraction pipe is provided with an air extraction hole, and the air extraction hole is communicated with the connecting hole.

5. The liquid crystal filling apparatus for manufacturing an LCD according to claim 4, wherein The limiting module comprises a limiting structure and a monitoring structure, the monitoring structure is arranged on the support frame and connected with the mounting box and used for monitoring the rotating angle of the mounting box, the limiting structure is arranged on one side of the mounting box away from the discharging window and used for limiting the moving direction of the liquid crystal empty box in the mounting groove, the limiting structure is electrically connected with the monitoring structure, and the monitoring structure controls the limiting structure to be invalid when the rotating angle of the mounting box reaches a set angle.

6. The liquid crystal filling apparatus for manufacturing an LCD according to claim 5, wherein The limiting structure comprises a hinged block, a limiting plate and an electromagnet, the hinged block is movably arranged in a slide rail formed on the mounting box and elastically connected with the slide rail, an iron block is arranged in the hinged block, the electromagnet is arranged on the mounting box and located at one side of the hinged block, the electromagnet and the monitoring structure are electrically connected, one end of the limiting plate is hinged on the hinged block, and a storage groove matched with the limiting plate in sliding is formed on the mounting box.

7. The liquid crystal filling apparatus for manufacturing an LCD according to claim 6, wherein The monitoring structure comprises a monitoring box, a conductive block and a conductive disc, the monitoring box is arranged on the support frame, the conductive disc is movably arranged in the monitoring box and connected with the mounting box, the conductive block is arranged on the inner wall of the monitoring box and located on the moving path of the conductive disc, and the conductive disc, the conductive block and the electromagnet are electrically connected.

8. The liquid crystal filling apparatus for manufacturing an LCD according to claim 7, wherein The injection box body comprises a liquid storage tank, an adapter, an air pump, a sealing box and an extrusion plate, the liquid storage tank is arranged on the base, the adapter is movably arranged at the discharge port of the liquid storage tank and matched with the discharging window, the adapter and the liquid storage tank are elastically connected, the extrusion plate is movably arranged in an extrusion recess formed on the liquid storage tank, the extrusion plate and the liquid storage tank are elastically connected, the sealing box is arranged on the base, the extrusion recess is arranged on the inner side of the sealing box, and the air pump is arranged on the sealing box.

9. A liquid crystal filling method for LCD manufacturing, applied to the liquid crystal filling apparatus according to claim 1, characterized by, The liquid crystal filling method comprises the following specific steps: S100: placing the empty liquid crystal box on the feeding seat, and controlling the first conveying belt to work to control the movement of the empty liquid crystal box towards the empty box mounting assembly through the controller; S200: receiving the empty liquid crystal box through the empty box mounting assembly, the empty box mounting assembly can extract vacuum in the empty liquid crystal box when working, and can control the injection box body to work to fill the liquid crystal into the empty liquid crystal box; S300: finally, controlling the empty box mounting assembly to work to input the filled empty liquid crystal box into the discharging seat, and discharging the empty liquid crystal box through the second conveying belt.

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