Device for quickly injecting liquid crystal into liquid crystal box

Abstract

The utility model discloses a device for quickly injecting liquid crystal into a liquid crystal box, which belongs to the technical field of liquid crystal display (LCD) production equipment and comprises a box body, one side of the box body is sequentially fixed and communicated with a vacuum pipeline, a pressurizing pipeline and an atmosphere inflating pipeline from bottom to top, and one end of the vacuum pipeline is provided with a vacuum pump. A pressurizing pipeline is arranged in the box body, an air pressure pressurizing pump is installed at one end of the pressurizing pipeline, a bottom plate is arranged in the box body, and jacking air cylinders are installed between the four corners of the bottom of the bottom plate and the inner bottom wall of the box body. Then the liquid crystal in the groove liquid crystal strip is in contact with the liquid crystal injection port, the liquid crystal is injected by utilizing the capillary action of the liquid crystal box, and the pressure difference between the interior of the box body and the interior of the liquid crystal box is changed by controlling equipment such as an air pressure booster pump and an atmosphere inflation pipe so as to adapt to the liquid crystal boxes with different sizes to rapidly inject the liquid crystal; and the production efficiency of products is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LCD production equipment, and more specifically to a device for rapidly injecting liquid crystal into a liquid crystal box. Background Art

[0002] The structure of LCD is to fill the space between two parallel glass substrates with liquid crystal. TFT (thin film transistor) is set on the lower glass substrate, and color filter is set on the upper glass substrate. The rotation direction of liquid crystal molecules is controlled by changing the signal and voltage on the TFT, thereby controlling the polarized light output of each pixel and achieving the display purpose. The liquid crystal is injected through the injection port of the liquid crystal cell. The auxiliary pressure of the liquid crystal during injection is the atmospheric pressure of the natural environment. The standard atmospheric pressure is 1.01325*105Pa. Due to the large viscosity coefficient of liquid crystal and the small thickness of the liquid crystal cell, which is only between 2.5um and 10um, the injection time of liquid crystal is generally long, usually ranging from 20 minutes to 10 hours. In particular, the smaller the cell thickness and the larger the product size, the longer the injection time, resulting in low product production efficiency. Therefore, in view of this, the existing structure is studied and improved to provide a device for quickly injecting liquid crystal into the liquid crystal cell, in order to achieve more practical value. Utility Model Content

[0003] 1. Technical problems to be solved

[0004] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a device for quickly injecting liquid crystal into a liquid crystal box. It can use a vacuum pump to exhaust the air inside the box and the liquid crystal box, and then the liquid crystal in the groove liquid crystal strip contacts the liquid crystal injection port and uses the capillary action of the liquid crystal box to achieve the injection of liquid crystal. By controlling equipment such as an air pressure boosting pump and an atmospheric inflation tube, the pressure difference between the inside of the box and the liquid crystal box can be changed to adapt to the rapid injection of liquid crystal into liquid crystal boxes of different sizes, thereby greatly improving the production efficiency of the product.

[0005] 2. Technical solution

[0006] In order to solve the above problems, the present invention adopts the following technical solutions.

[0007] A device for quickly injecting liquid crystal into a liquid crystal box comprises a box body, one side of which is fixed with a vacuum pipe, a pressurized pipe and an atmospheric inflation pipe in sequence from bottom to top and connected thereto, a vacuum pump being installed at one end of the vacuum pipe, and an air pressure pump being installed at one end of the pressurized pipe, a bottom plate being provided inside the box body, a lifting cylinder being installed between the four corners of the bottom of the bottom plate and the inner bottom wall of the box body, a grooved liquid crystal strip being installed on the top of the bottom plate, a liquid crystal box being provided directly above the grooved liquid crystal strip, and the liquid crystal box being mounted on the inner side wall of the box body via a bracket.

[0008] Furthermore, a vacuum valve is installed on the vacuum pipe, and the vacuum valve is located between the vacuum pump and the box.

[0009] Furthermore, a pressurizing valve is installed on the pressurizing pipeline, and the pressurizing valve is located between the air pressure pump and the box.

[0010] Furthermore, an atmospheric inflation valve is installed on the atmospheric inflation pipeline.

[0011] Furthermore, a sealing door is installed on the other side of the box.

[0012] Furthermore, a main liquid crystal inlet is provided at the bottom of the liquid crystal box, and the main liquid crystal inlet is located directly above the grooved liquid crystal strip.

[0013] Furthermore, the bracket includes two supporting plates fixed to the inner wall of one side of the box and clamping rods fixed to both ends of the liquid crystal box. A clamping slot is opened on the top of the supporting plate corresponding to the position of the clamping rod, and the corresponding clamping rod is clamped in the clamping slot.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] In this solution, the air inside the box and the liquid crystal box is discharged through a vacuum pump, and then the liquid crystal in the grooved liquid crystal strip rises through the lifting cylinder and contacts the liquid crystal injection port. The liquid crystal is injected through the capillary action of the liquid crystal box. At the same time, the pressure difference between the inside of the box and the liquid crystal box is changed by controlling equipment such as the air pressure booster pump and the atmospheric inflation tube. When the pressure difference increases, not only can the injection speed of the liquid crystal be accelerated, but it can also adapt to the rapid injection of liquid crystals into liquid crystal boxes of different sizes, greatly improving the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the liquid crystal box and the bracket of the utility model;

[0020] Figure 4 This is a schematic structural diagram of the liquid crystal box and the grooved liquid crystal strip in the working state of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Box body;

[0023] 2. Vacuum pipe;

[0024] 3. Pressurized pipeline;

[0025] 4. Atmospheric inflation pipeline;

[0026] 5. Vacuum pump;

[0027] 6. Air pressure booster pump;

[0028] 7. Bottom plate;

[0029] 8. Lifting cylinder;

[0030] 9. Grooved liquid crystal strip;

[0031] 10. Liquid crystal box;

[0032] 11. Bracket; 1101. Support plate; 1102. Clamping rod;

[0033] 12. Vacuum valve;

[0034] 13. Pressurized valve;

[0035] 14. Atmospheric inflation valve;

[0036] 15. Sealed door;

[0037] 16. LCD main entrance. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0039] See also Figure 1-4 A device for quickly injecting liquid crystal into a liquid crystal box includes a box body 1, one side of the box body 1 is fixed with a vacuum pipe 2, a pressurized pipe 3 and an atmospheric inflation pipe 4 in sequence from bottom to top and connected, a vacuum pump 5 is installed at one end of the vacuum pipe 2, and an air pressure pump 6 is installed at one end of the pressurized pipe 3. A bottom plate 7 is provided inside the box body 1, and a lifting cylinder 8 is installed between the four corners of the bottom of the bottom plate 7 and the inner bottom wall of the box body 1. A grooved liquid crystal strip 9 is installed on the top of the bottom plate 7, and a liquid crystal box 10 is provided directly above the grooved liquid crystal strip 9, and the liquid crystal box 10 is installed on the inner wall of the box body 1 through a bracket 11.

[0040] See Figure 1A vacuum valve 12 is installed on the vacuum pipe 2, and the vacuum valve 12 is located between the vacuum pump 5 and the box body 1.

[0041] See Figure 1 A pressurizing valve 13 is installed on the pressurizing pipe 3 , and the pressurizing valve 13 is located between the air pressure pump 6 and the box body 1 .

[0042] See Figure 1 , an atmospheric inflation valve 14 is installed on the atmospheric inflation pipe 4.

[0043] See Figure 1 A sealing door 15 is installed on the other side of the box body 1.

[0044] See Figure 3 A main liquid crystal inlet 16 is provided at the bottom of the liquid crystal box 10 , and the main liquid crystal inlet 16 is located directly above the grooved liquid crystal strip 9 .

[0045] See Figure 3 The bracket 11 includes two supporting plates 1101 fixed to the inner wall of one side of the box body 1 and a clamping rod 1102 fixed to both ends of the liquid crystal box 10. A clamping slot is opened at the top of the supporting plate 1101 corresponding to the position of the clamping rod 1102, and the corresponding clamping rod 1102 is clamped in the clamping slot.

[0046] When in use: place the empty liquid crystal box 10 on the support plate 1101, then fill the grooved liquid crystal strip 9 with liquid crystal, close the sealing door 15 of the box body 1, start the vacuum pump 5, and extract the air in the box body 1 and the liquid crystal box 10 until the vacuum degree reaches 0.05-5Pa, then stop the vacuum pump 5, close the vacuum valve 12, use the lifting cylinder 8 to raise the bottom plate 7, and drive the grooved liquid crystal strip 9 to rise, so that the liquid crystal contacts the liquid crystal injection port 16 of the liquid crystal box 10 (as shown in FIG. Figure 4 ), since the thickness of the liquid crystal cell 10 is only 2.5um-10um, the liquid crystal begins to be slowly adsorbed and injected into the liquid crystal cell 10 under the capillary action of the liquid crystal cell 10, and the liquid crystal in the liquid crystal cell 10 slowly rises. Then the atmospheric inflation valve 14 is slowly opened, and the external air is slowly filled into the cavity of the box 1 through the atmospheric inflation pipe 4 until the air pressure in the cavity is consistent with the external atmospheric pressure. As the air pressure in the internal cavity increases after the gas is filled, the air pressure will be pressurized on the liquid crystal. The interior of the empty liquid crystal cell 10 is in a high vacuum state, and there is an air pressure difference with the external air pressure. This air pressure difference will accelerate the injection of liquid crystal into the liquid crystal cell 10;

[0047] When the air pressure in the cavity of the box 1 reaches 1kgf / cm², which is the same as the external atmospheric pressure, the atmospheric inflation valve 14 is closed, the pressurization valve 13 is opened, and the air pressure pump 6 is started. The air pressure in the cavity of the box 1 is pressurized to 5kgf / cm² by the air pressure pump 6. At this time, the pressure difference between the air pressure in the cavity of the box 1 and the pressure in the liquid crystal cell 10 is approximately equal to 5kgf / cm². Under the higher pressure difference, the injection speed of the liquid crystal is significantly increased by about 80% compared with the conventional pressure injection method for the same liquid crystal cell 10.

[0048] When the air pressure in the cavity of the box 1 reaches 1kgf / cm², which is the same as the external atmospheric pressure, the atmospheric inflation valve 14 is closed, the pressurization valve 13 is opened, and the air pressure pump 6 is started. The air pressure in the cavity of the box 1 is pressurized to 8kgf / cm² by the air pressure pump 6. At this time, the pressure difference between the air pressure in the cavity of the box 1 and the pressure in the liquid crystal cell 10 is approximately equal to 8kgf / cm². Under the higher pressure difference, the injection speed of the liquid crystal is significantly increased by about 150% compared with the conventional pressure injection method for the same liquid crystal cell 10.

[0049] When the air pressure in the cavity of the box 1 reaches 1kgf / cm², which is the same as the external atmospheric pressure, the atmospheric inflation valve 14 is closed, the pressurization valve 13 is opened, and the air pressure boosting pump 6 is started. The air pressure in the cavity of the box 1 is pressurized to a pressure state of 10kgf / cm² through the air pressure boosting pump 6. At this time, the pressure difference between the air pressure in the cavity of the box 1 and the pressure in the liquid crystal box 10 is approximately equal to 10kgf / cm². Under a higher pressure difference, for the same liquid crystal box 10, the injection speed of the liquid crystal is greatly improved by about 180% compared with the conventional pressure injection method.

[0050] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0051] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0052] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A device for rapidly injecting liquid crystal into a liquid crystal box, comprising a box (1), characterized in that: A vacuum pipe (2), a pressurized pipe (3) and an atmospheric inflation pipe (4) are fixed and connected to one side of the box (1) in sequence from bottom to top. A vacuum pump (5) is installed at one end of the vacuum pipe (2), and an air pressure pump (6) is installed at one end of the pressurized pipe (3). A bottom plate (7) is provided inside the box (1), and a lifting cylinder (8) is installed between the four corners of the bottom of the bottom plate (7) and the inner bottom wall of the box (1). A grooved liquid crystal strip (9) is installed on the top of the bottom plate (7), and a liquid crystal box (10) is provided directly above the grooved liquid crystal strip (9). The liquid crystal box (10) is installed on the inner wall of the box (1) through a bracket (11).

2. The device for rapidly injecting liquid crystal into a liquid crystal cell according to claim 1, wherein: A vacuum valve (12) is installed on the vacuum pipe (2), and the vacuum valve (12) is located between the vacuum pump (5) and the box (1).

3. The device for rapidly injecting liquid crystal into a liquid crystal cell according to claim 1, wherein: A pressurizing valve (13) is installed on the pressurizing pipe (3), and the pressurizing valve (13) is located between the air pressure pump (6) and the box (1).

4. The device for rapidly injecting liquid crystal into a liquid crystal cell according to claim 1, wherein: An atmospheric inflation valve (14) is installed on the atmospheric inflation pipe (4).

5. The device for rapidly injecting liquid crystal into a liquid crystal cell according to claim 1, wherein: A sealing door (15) is installed on the other side of the box body (1).

6. The device for rapidly injecting liquid crystal into a liquid crystal cell according to claim 1, characterized in that: A main liquid crystal inlet (16) is provided at the bottom of the liquid crystal box (10), and the main liquid crystal inlet (16) is located directly above the grooved liquid crystal strip (9).

7. The device for rapidly injecting liquid crystal into a liquid crystal cell according to claim 1, wherein: The bracket (11) comprises two supporting plates (1101) fixed to the inner wall of one side of the box (1) and clamping rods (1102) fixed to both ends of the liquid crystal box (10); a clamping slot is provided on the top of the supporting plate (1101) at a position corresponding to the clamping rod (1102), and the corresponding clamping rod (1102) is clamped in the clamping slot.

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