A liquid crystal rapid injection device for LCD production

Abstract

The present invention discloses a liquid crystal rapid injection device for LCD production, which relates to the technical field of LCD production. A box door is movably connected to the top of the box body. A transparent plate is fixedly connected to the side surface of the box body. An air pressure booster pump is fixedly connected to the side surface of the box body. An atmospheric inflation pipeline is fixedly connected to one side of the box body close to the air pressure booster pump. A vacuum pump is fixedly connected to one side of the box body close to the air pressure booster pump. When the air pressure in the inner cavity of the box body reaches 1 kgf / cm² which is the same as the external atmospheric pressure, the valve on the atmospheric inflation pipeline is closed, the valve on the air pressure booster pump is opened, and the air pressure booster pump is started. The air pressure in the inner cavity of the box body is pressurized to a pressure state of 2-10 kgf / cm² through the air pressure booster pump. At this time, the pressure difference between the inner cavity of the box body and the inner pressure of the empty liquid crystal cell is higher, and the pressure difference is approximately equal to the air pressure in the inner cavity of the box body. Under a higher pressure difference, the injection speed of the liquid crystal will be greatly increased by 10%-200%.

Description

Technical Field

[0001] The present invention relates to the technical field of LCD production, and particularly relates to a liquid crystal rapid injection device for LCD production. Background Art

[0002] The structure of an LCD is that liquid crystal is filled between two parallel glass substrates. TFTs (Thin Film Transistors) are arranged on the lower substrate glass, and color filters are arranged on the upper substrate glass. The rotation direction of liquid crystal molecules is controlled by the signals and voltages on the TFTs, so as to control whether the polarized light of each pixel point is emitted or not to achieve the display purpose. The injection of liquid crystal is carried out through the injection port of the liquid crystal cell. The auxiliary air pressure for injecting liquid crystal during injection utilizes the atmospheric pressure of the natural environment. The standard atmospheric pressure is 1.01325*10 5 Pa. Since the viscosity coefficient of the liquid crystal is relatively large, and the thickness of the liquid crystal cell is small, only between 2.5um and 10um, generally the injection time of the liquid crystal is relatively long, generally ranging from 20 minutes to 10 hours. Especially when the cell thickness is smaller and the product size is larger, the injection time is longer, resulting in low production efficiency of the product.

[0003] However, for the traditional liquid crystal injection method, the maximum pressure difference is approximately equal to the standard atmospheric pressure of the external natural environment, 1.01325*10 5 Pa (converted to 1kgf / cm 2 ). This 1kgf / cm 2 of pressure is provided by the external atmospheric pressure and is easily obtained. However, under this pressure, if the size of the empty liquid crystal cell is large, the injection speed of the liquid crystal is not fast. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the technical solution adopted by the present invention to solve its technical problems is: A liquid crystal rapid injection device for LCD production according to the present invention includes:

[0005] A box body, the top of the box body is movably connected with a box door, a transparent plate is fixedly connected to the side of the box body, a pneumatic pressure pump is fixedly connected to the side of the box body, an atmospheric inflation pipeline is fixedly connected to the side of the box body close to the pneumatic pressure pump, a vacuum pump is fixedly connected to the side of the box body close to the pneumatic pressure pump, a bottom plate component is fixedly connected to the inner side of the box body, and an empty liquid crystal cell is placed inside the box body;

[0006] A placing component, which is used for placing the empty liquid crystal cell, and the side of the placing component is fixedly connected to the inner side of the box body;

[0007] The placement component includes a support block. The side surface of the support block is fixedly connected to the inner side of the box body. One end of the support block away from the box body is fixedly connected to a lower support plate. The side surface of the lower support plate is slidably connected to the inner side of the support block. A connecting shaft is slidably connected to the top of the lower support plate. The top of the connecting shaft is fixedly connected to an upper support plate. A first spring is sleeved on the connecting shaft. The top of the first spring is fixedly connected to the bottom of the upper support plate. The bottom of the first spring is fixedly connected to the top of the lower support plate. A second connecting block is fixedly connected to the side surface of the lower support plate. One end of the second connecting block away from the lower support plate is rotatably connected to a connecting arm. A first connecting block is fixedly connected to the side surface of the upper support plate. A connecting rod is rotatably connected to the inner side of the connecting arm. One end of the connecting rod away from the connecting arm is rotatably connected to the inner side of the first connecting block. A second spring is fixedly connected to the side surface of the connecting rod. The other end of the second spring is fixedly connected to the side surface of the connecting arm. A contact mechanism is fixedly connected to the top of the connecting arm; by placing the empty liquid crystal cell on the upper support plate and driving it by the weight of the empty liquid crystal cell itself, the upper support plate drives the connecting shaft to move downward, so that the upper support plate pulls the connecting rod to rotate inside the first connecting block, so that the connecting rod drives the connecting arm to rotate on the second connecting block, so that the connecting arm drives the contact mechanism to clamp and fix the empty liquid crystal cell;

[0008] Preferably, the contact mechanism includes a contact plate. The side surface of the contact plate is fixedly connected to the top of the connecting arm. A contact groove is formed on the side surface of the contact plate. A connecting plate is fixedly connected to the inner side of the contact groove through a rubber rod. A contact block is fixedly connected to the side surface of the connecting plate; when the connecting arm drives the contact plate to squeeze the empty liquid crystal cell, the contact plate drives the connecting plate through the rubber rod to squeeze and contact the side surface of the empty liquid crystal cell. At the same time, a contact block is arranged on the connecting plate, and the material of the contact block is rubber material, so as to avoid squeezing damage to the side surface of the empty liquid crystal cell when limiting and fixing the empty liquid crystal cell. At the same time, by limiting and fixing the empty liquid crystal cell, it is avoided that the empty liquid crystal cell will deflect during the air extraction work in the box body, thus interfering with the subsequent liquid crystal injection work;

[0009] Preferably, the bottom plate component includes a moving plate and a first electric hydraulic cylinder. The first electric hydraulic cylinder is fixedly connected to the bottom of the inner cavity of the box. The output end of the first electric hydraulic cylinder is fixedly connected to the bottom of the moving plate. Both sides of the bottom of the moving plate are fixedly connected with sliding rods. The bottom of the sliding rods is slidably connected to the bottom of the inner cavity of the box. The side of the moving plate is slidably connected to the inner side of the box. The top of the moving plate is fixedly connected with a connecting mechanism. After adding liquid crystal to the groove liquid crystal strip in the connecting mechanism, by turning on the vacuum pump, when the vacuum pump pumps out the air in the inner cavity of the box and the empty liquid crystal cell, the vacuum pump stops working. By closing the valve on the vacuum pump, by turning on the first electric hydraulic cylinder, the output end of the first electric hydraulic cylinder drives the moving plate to move upward in the inner side of the box, so that the groove liquid crystal strip in the connecting mechanism contacts the liquid crystal injection port of the empty liquid crystal cell. At the same time, since the cell gap of the liquid crystal is only 2.5um - 10um, the liquid crystal begins to be adsorbed and injected into the empty liquid crystal cell slowly under the capillary action. The liquid crystal in the empty liquid crystal cell slowly rises, and then slowly opens the valve on the atmospheric inflation pipeline. The external air slowly fills into the inner cavity of the box until the air pressure in the inner cavity of the box is the same as the external atmospheric pressure. Since the air pressure in the inner cavity of the box becomes higher and higher after filling the gas, the air pressure will press on the liquid crystal. There is a pressure difference between the high vacuum state inside the empty liquid crystal cell and the external air pressure, and this pressure difference will accelerate the injection of the liquid crystal into the empty liquid crystal cell;

[0010] Preferably, the connecting mechanism includes a connecting frame. The bottom of the connecting frame is fixedly connected to the top of the moving plate. The inner side of the connecting frame is fixedly connected with a groove liquid crystal strip. Moving grooves are opened on both sides of the groove liquid crystal strip. The inner side of the connecting frame is fixedly connected with a second electric hydraulic cylinder. A square plate is slidably connected to the inner side of the moving groove. The top of the square plate contacts the bottom of the inner cavity of the groove liquid crystal strip. The side of the square plate is slidably connected to the inner side of the moving groove. The side of the square plate is fixedly connected to the output end of the second electric hydraulic cylinder. The bottom of the groove liquid crystal strip is fixedly connected with a cleaning mechanism. When it is necessary to clean the inner side of the groove liquid crystal strip after completing the liquid crystal injection work inside the empty liquid crystal cell, turn on the second electric hydraulic cylinder at the same time. The output end of the second electric hydraulic cylinder drives the square plate to move in the moving groove, so that the square plate disengages from the top of the cleaning mechanism;

[0011] Preferably, the cleaning mechanism includes a connecting housing, the top of the connecting housing is fixedly connected to the bottom of the inner cavity of the trench liquid crystal strip, a third electric hydraulic cylinder is fixedly connected to the bottom of the inner cavity of the connecting housing, the output end of the third electric hydraulic cylinder is fixedly connected to a scraper kit, and a telescopic rod is slidably connected to the bottom of the inner cavity of the connecting housing. The top of the telescopic rod is fixedly connected to the scraper kit; when the square plate disengages from the top of the connecting housing, by turning on the third electric hydraulic cylinder, the output end of the third electric hydraulic cylinder drives the scraper kit to move upward, so that the scraper kit continuously moves upward in the connecting housing. When the scraper kit disengages from the connecting housing, the scraper kit contacts and cleans the inner side of the trench liquid crystal strip, thereby cleaning the connecting housing.

[0012] Preferably, the scraper kit includes a scraper housing, the bottom of the scraper housing is fixedly connected to the output end of the third electric hydraulic cylinder, the bottom of the scraper housing is fixedly connected to the top of the telescopic rod, round rods are slidably connected to both sides of the inner cavity of the scraper housing, a square block is fixedly connected to one end of the round rod away from the inner side of the scraper housing, a third spring is sleeved on the round rod, one end of the third spring is fixedly connected to the inner side of the scraper housing, the other end of the third spring is fixedly connected to the square block, and a scraper is fixedly connected to one end of the square block away from the round rod; when the output end of the third electric hydraulic cylinder drives the scraper housing to continuously move upward, when the scraper housing disengages from the inner side of the connecting housing, the square block is driven by the stretching of the third spring, so that the square block drives the scraper to move towards the inner side of the connecting housing through the round rod, and at the same time, it is driven by the output end of the third electric hydraulic cylinder to continuously move upward, so that the scraper contacts and cleans the inner side of the trench liquid crystal strip, thereby preventing a large amount of liquid crystal from adhering to the inner side of the trench liquid crystal strip and being difficult to naturally fall off during the liquid crystal injection operation.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. By setting an air pressure boosting pump, a vacuum pump and an atmospheric inflation pipeline in the present invention, after the air pressure in the inner cavity of the box reaches 1 kgf / cm² which is the same as the external atmospheric pressure, the valve on the atmospheric inflation pipeline is closed, the valve on the air pressure boosting pump is opened, and the air pressure boosting pump is started. The air pressure in the inner cavity of the box is boosted to a pressure state of 2 - 10 kgf / cm² by the air pressure boosting pump. At this time, the pressure difference between the inner cavity of the box and the pressure in the empty liquid crystal cell is higher, and the pressure difference is approximately equal to the pressure in the inner cavity of the box. Under a higher pressure difference, the injection speed of the liquid crystal will be increased significantly by 10% - 200%.

[0015] 2. The present invention is provided with a contact mechanism. When the connecting arm drives the contact plate to squeeze the empty liquid crystal cell, the contact plate drives the connecting plate through the rubber rod, so as to squeeze and contact the side of the empty liquid crystal cell. At the same time, a contact block is arranged on the connecting plate, and the material of the contact block is rubber material, so as to avoid squeezing damage to the side of the empty liquid crystal cell when limiting and fixing the empty liquid crystal cell. At the same time, by limiting and fixing the empty liquid crystal cell, the phenomenon that the empty liquid crystal cell deflects during the air extraction work in the box body can be avoided, thus interfering with the subsequent liquid crystal injection work.

[0016] 3. The present invention is provided with a connecting mechanism. When it is necessary to clean the inner side of the groove liquid crystal strip after the liquid crystal injection work in the empty liquid crystal cell is completed, the second electric hydraulic cylinder is opened at the same time. Through the output end of the second electric hydraulic cylinder, the square plate is driven to move in the moving groove, so that the square plate disengages from the top of the cleaning mechanism.

[0017] 4. The present invention is provided with a cleaning mechanism. When the square plate disengages from the top of the connecting housing, the third electric hydraulic cylinder is opened. Through the output end of the third electric hydraulic cylinder, the scraping plate kit is driven to move upward, so that the scraping plate kit continuously moves upward in the connecting housing. When the scraping plate kit disengages from the connecting housing, the scraping plate kit contacts and cleans the inner side of the groove liquid crystal strip, so as to clean the connecting housing.

[0018] 5. The present invention is provided with a scraping plate kit. When the output end of the third electric hydraulic cylinder drives the scraping plate housing to continuously move upward, when the scraping plate housing disengages from the inner side of the connecting housing, the square block is driven by the stretching of the third spring, so that the square block drives the scraping plate to move towards the inner side of the connecting housing through the round rod. At the same time, the output end of the third electric hydraulic cylinder drives the continuous upward movement, so that the scraping plate contacts and cleans the inner side of the groove liquid crystal strip, thus avoiding a large amount of liquid crystal adhering to the inner side of the groove liquid crystal strip during the liquid crystal injection work and being difficult to fall off naturally. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the liquid crystal rapid injection device for LCD production of the present invention;

[0020] Figure 2 is a sectional view of the present invention;

[0021] Figure 3 is an axonometric view of the present invention;

[0022] Figure 4 is a schematic structural diagram of the empty liquid crystal cell of the present invention;

[0023] Figure 5 is a schematic structural diagram of the placing component of the present invention;

[0024] Figure 6 is a schematic structural view of the contact mechanism of the present invention;

[0025] Figure 7 is a schematic structural view of the bottom plate component of the present invention;

[0026] Figure 8 is a schematic structural view of the connection mechanism of the present invention;

[0027] Figure 9 is a schematic structural view of the trench liquid crystal strip of the present invention;

[0028] Figure 10 is a schematic structural view of the cleaning mechanism of the present invention;

[0029] Figure 11 is a schematic structural view of the scraper kit of the present invention;

[0030] In the figure: 1, box body; 2, box door; 3, transparent plate; 4, air pressure booster pump; 5, placement component; 51, support block; 52, lower support plate; 53, connecting shaft; 54, upper support plate; 55, first spring; 56, first connecting block; 57, second connecting block; 58, second spring; 59, contact mechanism; 591, contact plate; 592, contact groove; 593, connecting plate; 594, contact block; 510, connecting arm; 511, connecting rod; 6, bottom plate component; 61, moving plate; 62, first electric hydraulic cylinder; 63, sliding rod; 64, connection mechanism; 641, connection frame; 642, trench liquid crystal strip; 643, moving groove; 644, cleaning mechanism; 6441, connection housing; 6442, third electric hydraulic cylinder; 6443, telescopic rod; 6444, scraper kit; 64441, scraper housing; 64442, round rod; 64443, third spring; 64444, square block; 64445, scraper; 645, second electric hydraulic cylinder; 646, square plate; 7, empty liquid crystal cell; 8, atmospheric inflation pipeline; 9, vacuum pump. Detailed implementation manners

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0032] Embodiment 1, use Figures 1 - 6A liquid crystal rapid injection device for LCD production according to an embodiment of the present invention will be described as follows.

[0033] As Figures 1 - 6 shown, a liquid crystal rapid injection device for LCD production of the present invention includes:

[0034] A box body 1, a box door 2 is movably connected to the top of the box body 1, a transparent plate 3 is fixedly connected to the side of the box body 1, a pneumatic pressure pump 4 is fixedly connected to the side of the box body 1, an atmospheric inflation pipeline 8 is fixedly connected to one side of the box body 1 close to the pneumatic pressure pump 4, a vacuum pump 9 is fixedly connected to one side of the box body 1 close to the pneumatic pressure pump 4, a bottom plate component 6 is fixedly connected to the inner side of the box body 1, and an empty liquid crystal cell 7 is placed inside the box body 1;

[0035] A placement component 5, which is used to place the empty liquid crystal cell 7, and the side of the placement component 5 is fixedly connected to the inner side of the box body 1;

[0036] The placement component 5 includes a support block 51, the side of the support block 51 is fixedly connected to the inner side of the box body 1, one end of the support block 51 away from the box body 1 is fixedly connected to a lower support plate 52, the side of the lower support plate 52 is slidably connected to the inner side of the support block 51, a connecting shaft 53 is slidably connected to the top of the lower support plate 52, an upper support plate 54 is fixedly connected to the top of the connecting shaft 53, a first spring 55 is sleeved on the connecting shaft 53, the top of the first spring 55 is fixedly connected to the bottom of the upper support plate 54, and the bottom of the first spring 55 is fixedly connected to the top of the lower support plate 52. A second connecting block 57 is fixedly connected to the side of the lower support plate 52, a connecting arm 510 is rotatably connected to one end of the second connecting block 57 away from the lower support plate 52, a first connecting block 56 is fixedly connected to the side of the upper support plate 54, a connecting rod 511 is rotatably connected to the inner side of the connecting arm 510, one end of the connecting rod 511 away from the connecting arm 510 is rotatably connected to the inner side of the first connecting block 56, a second spring 58 is fixedly connected to the side of the connecting rod 511, the other end of the second spring 58 is fixedly connected to the side of the connecting arm 510, and a contact mechanism 59 is fixedly connected to the top of the connecting arm 510; By placing the empty liquid crystal cell 7 on the upper support plate 54 and driving it by the weight of the empty liquid crystal cell 7 itself, the upper support plate 54 drives the connecting shaft 53 to move downward, so that the upper support plate 54 pulls the connecting rod 511 to rotate inside the first connecting block 56, so that the connecting rod 511 drives the connecting arm 510 to rotate on the second connecting block 57, so that the connecting arm 510 drives the contact mechanism 59 to clamp and fix the empty liquid crystal cell 7;

[0037] The contact mechanism 59 includes a contact plate 591. The side surface of the contact plate 591 is fixedly connected to the top of the connecting arm 510. A contact groove 592 is formed on the side surface of the contact plate 591. A connecting plate 593 is fixedly connected to the inner side of the contact groove 592 through a rubber rod. A contact block 594 is fixedly connected to the side surface of the connecting plate 593. When the connecting arm 510 drives the contact plate 591 to extrude the empty liquid crystal cell 7, the contact plate 591 drives the connecting plate 593 through the rubber rod, so as to extrude and contact the side surface of the empty liquid crystal cell 7. At the same time, a contact block 594 is arranged on the connecting plate 593, and the material of the contact block 594 is rubber material. Therefore, when the empty liquid crystal cell 7 is limited and fixed, it can avoid squeezing and damaging the side surface of the empty liquid crystal cell 7. At the same time, by limiting and fixing the empty liquid crystal cell 7, when the air in the box body 1 is pumped out, the phenomenon that the empty liquid crystal cell 7 deflects can be avoided, so as to interfere with the subsequent liquid crystal injection work.

[0038] Embodiment 2, use Figures 7 - 11 The following description is made for a liquid crystal rapid injection device for LCD production according to the present invention.

[0039] As Figures 7 - 11 shown, a liquid crystal rapid injection device for LCD production according to the present invention is based on Embodiment 1.

[0040] The bottom plate component 6 includes a moving plate 61 and a first electric hydraulic cylinder 62. The first electric hydraulic cylinder 62 is fixedly connected to the bottom of the inner cavity of the box body 1, and the output end of the first electric hydraulic cylinder 62 is fixedly connected to the bottom of the moving plate 61. Both sides of the bottom of the moving plate 61 are fixedly connected with sliding rods 63. The bottom of the sliding rods 63 is slidably connected to the bottom of the inner cavity of the box body 1. The side of the moving plate 61 is slidably connected to the inner side of the box body 1. The top of the moving plate 61 is fixedly connected with a connecting mechanism 64. After adding liquid crystal to the groove liquid crystal strip 642 in the connecting mechanism 64, by turning on the vacuum pump 9, when the vacuum pump 9 pumps out the air in the inner cavity of the box body 1 and the empty liquid crystal cell 7, the vacuum pump 9 stops working. By closing the valve on the vacuum pump 9, by turning on the first electric hydraulic cylinder 62, the output end of the first electric hydraulic cylinder 62 drives the moving plate 61 to move upward in the inner side of the box body 1, so that the groove liquid crystal strip 642 in the connecting mechanism 64 contacts the liquid crystal injection port of the empty liquid crystal cell 7. At the same time, because the cell thickness of the liquid crystal is only 2.5um - 10um, the liquid crystal begins to be adsorbed and injected into the empty liquid crystal cell 7 slowly under the capillary action. As the liquid crystal in the empty liquid crystal cell 7 slowly rises, then slowly open the valve on the atmospheric inflation pipeline 8, and the external air slowly fills into the internal cavity of the box body 1 through the atmospheric inflation pipeline 8 until the air pressure in the internal cavity of the box body 1 is consistent with the external atmospheric pressure. Since the air pressure in the internal cavity of the box body 1 becomes higher and higher after filling the gas, the air pressure will press on the liquid crystal. There is a pressure difference between the high vacuum state inside the empty liquid crystal cell 7 and the external air pressure, and this pressure difference will accelerate the injection of the liquid crystal into the empty liquid crystal cell 7;

[0041] The connecting mechanism 64 includes a connecting frame 641. The bottom of the connecting frame 641 is fixedly connected to the top of the moving plate 61. The inner side of the connecting frame 641 is fixedly connected with a groove liquid crystal strip 642. Moving grooves 643 are opened on both sides of the groove liquid crystal strip 642. The inner side of the connecting frame 641 is fixedly connected with a second electric hydraulic cylinder 645. A square plate 646 is slidably connected to the inner side of the moving groove 643. The top of the square plate 646 contacts the bottom of the inner cavity of the groove liquid crystal strip 642. The side of the square plate 646 is slidably connected to the inner side of the moving groove 643. The side of the square plate 646 is fixedly connected to the output end of the second electric hydraulic cylinder 645. The bottom of the groove liquid crystal strip 642 is fixedly connected with a cleaning mechanism 644. When it is necessary to clean the inner side of the groove liquid crystal strip 642 after completing the liquid crystal injection work inside the empty liquid crystal cell 7, turn on the second electric hydraulic cylinder 645 at the same time. Through the output end of the second electric hydraulic cylinder 645, drive the square plate 646 to move in the moving groove 643, so that the square plate 646 disengages from the top of the cleaning mechanism 644;

[0042] The cleaning mechanism 644 includes a connecting housing 6441. The top of the connecting housing 6441 is fixedly connected to the bottom of the inner cavity of the trench liquid crystal strip 642. At the bottom of the inner cavity of the connecting housing 6441, a third electric hydraulic cylinder 6442 is fixedly connected. The output end of the third electric hydraulic cylinder 6442 is fixedly connected to a scraper kit 6444. A telescopic rod 6443 is slidably connected to the bottom of the inner cavity of the connecting housing 6441. The top of the telescopic rod 6443 is fixedly connected to the scraper kit 6444. When the square plate 646 disengages from the top of the connecting housing 6441, by turning on the third electric hydraulic cylinder 6442, the output end of the third electric hydraulic cylinder 6442 drives the scraper kit 6444 to move upward, so that the scraper kit 6444 continuously moves upward in the connecting housing 6441. When the scraper kit 6444 disengages from the connecting housing 6441, the scraper kit 6444 contacts and cleans the inner side of the trench liquid crystal strip 642, thereby cleaning the connecting housing 6441;

[0043] The scraper kit 6444 includes a scraper housing 64441. The bottom of the scraper housing 64441 is fixedly connected to the output end of the third electric hydraulic cylinder 6442. The bottom of the scraper housing 64441 is fixedly connected to the top of the telescopic rod 6443. On both sides of the inner cavity of the scraper housing 64441, round rods 64442 are slidably connected. One end of the round rod 64442 away from the inner side of the scraper housing 64441 is fixedly connected to a square block 64444. A third spring 64443 is sleeved on the round rod 64442. One end of the third spring 64443 is fixedly connected to the inner side of the scraper housing 64441. The other end of the third spring 64443 is fixedly connected to the square block 64444. One end of the square block 64444 away from the round rod 64442 is fixedly connected to a scraper 64445. When the output end of the third electric hydraulic cylinder 6442 drives the scraper housing 64441 to continuously move upward, when the scraper housing 64441 disengages from the inner side of the connecting housing 6441, the square block 64444 is driven by the stretching of the third spring 64443, so that the square block 64444 drives the scraper 64445 to move toward the inner side of the connecting housing 6441 through the round rod 64442. At the same time, the output end of the third electric hydraulic cylinder 6442 drives it to continuously move upward, so that the scraper 64445 contacts and cleans the inner side of the trench liquid crystal strip 642, thereby preventing a large amount of liquid crystal from adhering to the inner side of the trench liquid crystal strip 642 and being difficult to naturally fall off during the liquid crystal injection work;

[0044] The specific working process is as follows:

[0045] During operation, open the box door 2, place the empty liquid crystal cell 7 on the placement component 5, add liquid crystal into the bottom plate component 6, close the door of the box body 1, turn on the vacuum pump 9, and evacuate the air in the internal cavity of the box body 1. At the same time, evacuate the air in the empty liquid crystal cell 7. After the vacuum degree reaches 0.05 - 5 Pa, the vacuum pump 9 stops working, close the valve on the vacuum pump 9, raise the bottom plate component 6 so that the liquid crystal contacts the liquid crystal injection port at the bottom of the empty liquid crystal cell 7. Since the cell thickness of the empty liquid crystal cell 7 is only 2.5 um - 10 um, the liquid crystal starts to be adsorbed and injected into the empty liquid crystal cell 7 slowly under the capillary action. As the liquid crystal in the empty liquid crystal cell 7 slowly rises, then slowly open the valve on the atmospheric inflation pipeline. The external air slowly fills the internal cavity of the box body 1 through the atmospheric inflation pipeline 8 until the air pressure in the internal cavity of the box body 1 is the same as the external atmospheric pressure. Since the air pressure in the internal cavity of the box body 1 becomes higher after the gas is filled, the air pressure will be applied to the liquid crystal. There is a pressure difference between the high vacuum state inside the empty liquid crystal cell 7 and the external air pressure, and this pressure difference will accelerate the injection of the liquid crystal into the empty liquid crystal cell 7. However, in the traditional liquid crystal injection method, the maximum pressure difference is approximately equal to the standard atmospheric pressure of the external natural environment, which is 1.01325 * 10^5 Pa, equivalent to 1 kgf / cm². This 1 kgf / cm² pressure is provided by the external atmospheric pressure and is easily obtained. However, under this pressure, if the size of the empty liquid crystal cell 7 is large, the injection speed of the liquid crystal is not fast. After the air pressure in the internal cavity of the box body 1 reaches 1 kgf / cm², which is the same as the external atmospheric pressure, close the valve on the atmospheric inflation pipeline 8, open the valve on the air pressure booster pump 4, start the air pressure booster pump 4, and increase the air pressure in the cavity of the box body 1 to a pressure state of 2 - 10 kgf / cm² through the air pressure booster pump 4. At this time, the pressure difference between the internal cavity of the box body 1 and the internal pressure of the empty liquid crystal cell 7 is higher, and the pressure difference is approximately equal to the pressure in the internal cavity of the box body 1. Under a higher pressure difference, the injection speed of the liquid crystal will increase significantly by 10% - 200%.

[0046] Place the empty liquid crystal cell 7 on the upper support plate 54. Driven by the weight of the empty liquid crystal cell 7 itself, the upper support plate 54 drives the connecting shaft 53 to move downward, so that the upper support plate 54 pulls the connecting rod 511 to rotate inside the first connecting block 56, so that the connecting rod 511 drives the connecting arm 510 to rotate on the second connecting block 57, so that the connecting arm 510 drives the contact mechanism 59 to clamp and fix the empty liquid crystal cell 7.

[0047] When the connecting arm 510 drives the contact plate 591 to squeeze the empty liquid crystal cell 7, the contact plate 591 drives the connecting plate 593 through the rubber rod, so as to squeeze and contact the side surface of the empty liquid crystal cell 7. At the same time, a contact block 594 is arranged on the connecting plate 593, and the material of the contact block 594 is rubber material, so as to avoid squeezing damage to the side surface of the empty liquid crystal cell 7 when the empty liquid crystal cell 7 is limited and fixed. At the same time, by limiting and fixing the empty liquid crystal cell 7, when the air in the box body 1 is pumped out, the empty liquid crystal cell 7 will not deflect, so as not to interfere with the subsequent liquid crystal injection work;

[0048] After adding liquid crystal to the groove liquid crystal strip 642 in the connecting mechanism 64, by turning on the vacuum pump 9, when the vacuum pump 9 pumps out the air in the inner cavity of the box body 1 and the empty liquid crystal cell 7, the vacuum pump 9 stops working. By closing the valve on the vacuum pump 9 and turning on the first electric hydraulic cylinder 62, the output end of the first electric hydraulic cylinder 62 drives the moving plate 61 to move upward inside the box body 1, so that the groove liquid crystal strip 642 in the connecting mechanism 64 contacts the liquid crystal injection port of the empty liquid crystal cell 7;

[0049] At the same time, since the cell thickness of the liquid crystal is only 2.5um - 10um, the liquid crystal begins to be adsorbed and injected into the empty liquid crystal cell 7 under the capillary action of the empty liquid crystal cell 7. The liquid crystal in the empty liquid crystal cell 7 slowly rises, and then the valve on the atmospheric inflation pipeline 8 is slowly opened. The external air slowly fills the internal cavity of the box body 1 through the atmospheric inflation pipeline 8 until the air pressure in the internal cavity of the box body 1 is consistent with the external atmospheric pressure. Since the air pressure in the internal cavity of the box body 1 becomes higher after the gas is filled, the air pressure will press on the liquid crystal. There is an air pressure difference between the high vacuum state inside the empty liquid crystal cell 7 and the external air pressure, and this air pressure difference will accelerate the injection of the liquid crystal into the empty liquid crystal cell 7;

[0050] When the air pressure in the internal cavity of the box body 1 reaches 1kgf / cm² which is consistent with the external atmospheric pressure, the valve on the atmospheric inflation pipeline 8 is closed, the valve on the air pressure booster pump 4 is opened, and the air pressure booster pump 4 is started. The air pressure in the cavity of the box body 1 is pressurized to a pressure state of 5kgf / cm² by the air pressure booster pump 4. At this time, the pressure difference between the air pressure in the cavity of the box body 1 and the pressure in the empty liquid crystal cell 7 is approximately equal to 5kgf / cm². Under a higher pressure difference, for the same empty liquid crystal cell 7, the injection speed of the liquid crystal is increased by about 80% compared with the conventional pressure injection method;

[0051] After the air pressure in the cavity of the box body 1 reaches 1 kgf / cm² which is the same as the external atmospheric pressure, close the valve on the atmospheric inflation pipe 8, open the valve on the air pressure booster pump 4, start the air pressure booster pump 4, and pressurize the air pressure in the cavity of the box body 1 to 8 kgf / cm² through the air pressure booster pump 4. At this time, the pressure difference between the air pressure in the cavity of the box body 1 and the pressure in the empty liquid crystal cell 7 is approximately equal to 8 kgf / cm². Under a higher pressure difference, for the same empty liquid crystal cell 7, the liquid crystal injection speed is increased by approximately 150% compared to the conventional pressure injection method;

[0052] After the air pressure in the cavity of the box body 1 reaches 1 kgf / cm² which is the same as the external atmospheric pressure, close the valve on the atmospheric inflation pipe 8, open the valve on the air pressure booster pump 4, start the air pressure booster pump 4, and pressurize the air pressure in the cavity of the box body 1 to 10 kgf / cm² through the air pressure booster pump 4. At this time, the pressure difference between the air pressure in the cavity of the box body 1 and the pressure in the empty liquid crystal cell 7 is approximately equal to 10 kgf / cm². Under a higher pressure difference, for the same empty liquid crystal cell 7, the liquid crystal injection speed is increased by approximately 180% compared to the conventional pressure injection method;

[0053] When it is necessary to clean the inner side of the groove liquid crystal strip 642 after the liquid crystal injection work inside the empty liquid crystal cell 7 is completed, simultaneously open the second electric hydraulic cylinder 645, and drive the square plate 646 to move in the moving groove 643 through the output end of the second electric hydraulic cylinder 645, so that the square plate 646 disengages from the top of the cleaning mechanism 644;

[0054] When the square plate 646 disengages from the top of the connecting housing 6441, by opening the third electric hydraulic cylinder 6442, drive the scraping plate kit 6444 to move upward through the output end of the third electric hydraulic cylinder 6442, so that the scraping plate kit 6444 continuously moves upward in the connecting housing 6441. When the scraping plate kit 6444 disengages from the connecting housing 6441, the scraping plate kit 6444 contacts and cleans the inner side of the groove liquid crystal strip 642, so as to clean the connecting housing 6441;

[0055] When the output end of the third electric hydraulic cylinder 6442 drives the scraping plate housing 64441 to continuously move upward, when the scraping plate housing 64441 disengages from the inner side of the connecting housing 6441, the square block 64444 is driven by the stretching of the third spring 64443, so that the square block 64444 drives the scraping plate 64445 to move toward the inner side of the connecting housing 6441 through the round rod 64442. At the same time, drive the output end of the third electric hydraulic cylinder 6442 to continuously move upward, so that the scraping plate 64445 contacts and cleans the inner side of the groove liquid crystal strip 642, thus avoiding a large amount of liquid crystal adhering to the inner side of the groove liquid crystal strip 642 during the liquid crystal injection work and being difficult to fall off naturally;

[0056] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. Structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented by conventional means in the art unless otherwise specified and limited.

Claims

1. A liquid crystal rapid injection device for LCD production, characterized in that: include: A box body (1), wherein the top of the box body (1) is movably connected to a box door (2), the side of the box body (1) is fixedly connected to a transparent plate (3), the side of the box body (1) is fixedly connected to an air pressure pump (4), the side of the box body (1) close to the air pressure pump (4) is fixedly connected to an atmospheric inflation pipe (8), the side of the box body (1) close to the air pressure pump (4) is fixedly connected to a vacuum pump (9), the inner side of the box body (1) is fixedly connected to a bottom plate component (6), and an empty liquid crystal box (7) is placed on the inner side of the box body (1); A placement component (5), the placement component (5) being used to place the empty liquid crystal box (7), the side surface of the placement component (5) being fixedly connected to the inner side of the box body (1); The placement component (5) comprises a support block (51), the side surface of the support block (51) being fixedly connected to the inner side of the box body (1), the end of the support block (51) away from the box body (1) being fixedly connected to a lower support plate (52), the top of the lower support plate (52) being slidably connected to a connecting shaft (53), the top of the connecting shaft (53) being fixedly connected to an upper support plate (54), the connecting shaft (53) being sleeved with a first spring (55), the side surface of the lower support plate (52) being fixedly connected to a second connecting block (57), the second connecting block (57) being away from the lower support plate ( One end of the upper support plate (52) is rotatably connected to a connecting arm (510), a side surface of the upper support plate (54) is fixedly connected to a first connecting block (56), an inner side of the connecting arm (510) is rotatably connected to a connecting rod (511), an end of the connecting rod (511) away from the connecting arm (510) is rotatably connected to the inner side of the first connecting block (56), a side surface of the connecting rod (511) is fixedly connected to a second spring (58), the other end of the second spring (58) is fixedly connected to the side surface of the connecting arm (510), and a top of the connecting arm (510) is fixedly connected to a contact mechanism (59); The contact mechanism (59) comprises a contact plate (591), the side surface of the contact plate (591) being fixedly connected to the top of the connecting arm (510), the side surface of the contact plate (591) being provided with a contact groove (592), the inner side of the contact groove (592) being fixedly connected to a connecting plate (593) via a rubber rod, and the side surface of the connecting plate (593) being fixedly connected to a contact block (594).

2. The liquid crystal rapid injection device for LCD production according to claim 1, characterized in that: The top of the first spring (55) is fixedly connected to the bottom of the upper support plate (54), the bottom of the first spring (55) is fixedly connected to the top of the lower support plate (52), and the side surface of the lower support plate (52) is slidably connected to the inner side of the support block (51).

3. The liquid crystal rapid injection device for LCD production according to claim 1, characterized in that: The bottom plate component (6) comprises a movable plate (61) and a first electric hydraulic cylinder (62), wherein the first electric hydraulic cylinder (62) is fixedly connected to the bottom of the inner cavity of the box body (1), and the output end of the first electric hydraulic cylinder (62) is fixedly connected to the bottom of the movable plate (61), and sliding rods (63) are fixedly connected to both sides of the bottom of the movable plate (61), and the bottom of the sliding rod (63) is slidably connected to the bottom of the inner cavity of the box body (1), and the side of the movable plate (61) is slidably connected to the inner side of the box body (1), and the top of the movable plate (61) is fixedly connected to a connecting mechanism (64).

4. The liquid crystal rapid injection device for LCD production according to claim 3, characterized in that: The connection mechanism (64) comprises a connection frame (641), a grooved liquid crystal strip (642) is fixedly connected to the inner side of the connection frame (641), both sides of the grooved liquid crystal strip (642) are provided with movable grooves (643), a second electric hydraulic cylinder (645) is fixedly connected to the inner side of the connection frame (641), a square plate (646) is slidably connected to the inner side of the movable groove (643), a side surface of the square plate (646) is fixedly connected to the output end of the second electric hydraulic cylinder (645), and a cleaning mechanism (644) is fixedly connected to the bottom of the grooved liquid crystal strip (642).

5. The liquid crystal rapid injection device for LCD production according to claim 4, characterized in that: The cleaning mechanism (644) comprises a connecting shell (6441), the bottom of the inner cavity of the connecting shell (6441) is fixedly connected to a third electric hydraulic cylinder (6442), the output end of the third electric hydraulic cylinder (6442) is fixedly connected to a scraper kit (6444), the bottom of the inner cavity of the connecting shell (6441) is slidably connected to a telescopic rod (6443), and the top of the telescopic rod (6443) is fixedly connected to the scraper kit (6444).

6. The liquid crystal rapid injection device for LCD production according to claim 5, characterized in that: The side surface of the square plate (646) is slidably connected to the inner side of the movable groove (643), the bottom of the connecting frame (641) is fixedly connected to the top of the movable plate (61), the top of the square plate (646) is in contact with the bottom of the inner cavity of the grooved liquid crystal strip (642), and the top of the connecting shell (6441) is fixedly connected to the bottom of the inner cavity of the grooved liquid crystal strip (642).

7. The liquid crystal rapid injection device for LCD production according to claim 5, characterized in that: The scraper kit (6444) comprises a scraper shell (64441), both sides of the inner cavity of the scraper shell (64441) are slidably connected to round rods (64442), one end of the round rod (64442) away from the inner side of the scraper shell (64441) is fixedly connected to a block (64444), a third spring (64443) is sleeved on the round rod (64442), and one end of the block (64444) away from the round rod (64442) is fixedly connected to a scraper (64445).

8. The liquid crystal rapid injection device for LCD production according to claim 7, characterized in that: The bottom of the scraper housing (64441) is fixedly connected to the output end of the third electric hydraulic cylinder (6442), the bottom of the scraper housing (64441) is fixedly connected to the top of the telescopic rod (6443), one end of the third spring (64443) is fixedly connected to the inner side of the scraper housing (64441), and the other end of the third spring (64443) is fixedly connected to the block (64444).

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