A pressure resistance detection device for liquid crystal display production

Abstract

The present invention discloses a pressure-resistant detection device for the production of liquid crystal display screens, which belongs to the technical field of display screen production, and includes a multi-point detection component, wherein a connecting tube is fixed at the bottom of the multi-point detection component, a lifting plug is inserted into the inner wall of the cavity of the connecting tube, and a synchronous tube is sleeved on the outer wall of the connecting tube. The present invention is provided by a combination of a stepped pipe, a trigger plate, a driven plate and a splicing groove. First, the stepped pipe can arrange the silicone tube in a ring shape outside the pressing point to reduce the influence on the pressing points next to it, thereby avoiding the mutual influence of adjacent detection points to reduce the accuracy of the detection results. Second, the silicone tube can be adsorbed on the liquid crystal screen through the negative pressure transmitted in the splicing groove to prevent the glass fragments from splashing out after the liquid crystal screen is broken, so as to improve the safety of the detection device. Third, the trigger plate and the driven plate can reduce the length of the crack extension when the pressing point is broken.

Description

Technical Field

[0001] The invention relates to the technical field of display screen production, and in particular to a pressure resistance detection device for producing liquid crystal display screens. Background Art

[0002] When liquid crystal display screens are produced, a pressure resistance testing device is required to test their pressure resistance. The existing pressure resistance testing device for liquid crystal display screens covers the display screen with a pressing plate to apply pressure to improve the testing efficiency. However, the method of covering the entire liquid crystal display screen for pressure resistance testing will cause pressure detection points with close distances to affect each other to a certain extent, thereby affecting the accuracy of the pressure resistance testing of the device. At the same time, because similar damaged points affect each other, the true appearance of the damaged points will be destroyed to a certain extent, making it inconvenient for the testers to classify and analyze the subsequent problems. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art that the pressure detection points with close distances in the overall coverage detection of the LCD screen are easily affected by each other, reducing the accuracy of the pressure resistance detection, and destroying the original appearance of the damaged points, making it inconvenient for the detection personnel to classify and analyze the subsequent problems. A pressure resistance detection device for LCD screen production is proposed to solve the problems in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A pressure-resistant detection device for the production of liquid crystal display screens, comprising a multi-point detection component, a connecting cylinder is fixed at the bottom of the multi-point detection component, a lifting plug is inserted into the inner wall of the cavity of the connecting cylinder, a synchronous cylinder is sleeved on the outer wall of the connecting cylinder, and the bottom of the lifting plug passes through the connecting cylinder and is fixedly connected to the inner bottom wall of the synchronous cylinder, a positive and negative pressure component is provided at the bottom of the synchronous cylinder, and the positive and negative pressure component is connected to the connecting cylinder, the lifting plug and the synchronous cylinder through a conducting component, a stepped pipe is fixed at the bottom of the positive and negative pressure component, there are several stepped pipes, and the multiple stepped pipes are connected to each other in a conical shape, and the inner wall of the bottom end of the stepped pipe is connected by a rotating shaft Several direction-changing joints are hinged, a trigger plate and a driven plate are fixed to the bottom of the direction-changing joint, a connecting spring is fixed to the top of the trigger plate, and the top of the connecting spring is fixed to the lower surface of the step pipe, a negative pressure cavity is opened on the inner wall of the direction-changing joint, the trigger plate and the driven plate, one end of the trigger plate and the driven plate are fixed with a splicing groove, the splicing groove is connected to the negative pressure cavity, a silicone tube is inserted at the bottom of the splicing groove, and several splicing grooves can be enclosed in a ring shape, a multi-conducting component is fixed to the top of the multi-point detection component, a driving component is fixed to the top of the multi-conducting component, and a bracket assembly is provided on the side of the driving assembly.

[0006] Preferably, the multi-point detection assembly includes a point plate, and the point plate is connected to the connecting tube, and the point plate includes an external extension rod and a middle polygonal plate, and one end of the external extension rod is fixed to the side of the middle polygonal plate.

[0007] Preferably, the positive and negative pressure assembly includes a groove cylinder fixed to the bottom of the synchronous cylinder, a lower pressure rod is inserted into the inner wall of the groove cylinder, a piston plate is fixed to the top of the lower pressure rod, a detection spring is fixed between the bottom of the piston plate and the inner bottom wall of the groove cylinder, and the detection spring is sleeved on the side of the lower pressure rod, a telescopic cylinder is inserted into the top of the piston plate, the top of the telescopic cylinder is fixed to the bottom of the synchronous cylinder, a connecting pipe is fixed to the side of the groove cylinder, and the bottom of the connecting pipe is fixed to the side of the step pipe.

[0008] Preferably, the conduction assembly comprises an upper connecting pipe, an intermediate pipe and a lower connecting pipe respectively opened inside the connecting cylinder, the lifting plug and the synchronous cylinder, and the bottom end of the lower connecting pipe is connected to the telescopic cylinder.

[0009] Preferably, the multi-directional conductive component includes a splicing tube fixed on the top of the point plate and a positive pressure pipe opened inside the point plate. There are six splicing tubes, and the six splicing tubes are enclosed in a ring shape. The two ends of the positive pressure pipe are respectively connected to the upper connecting pipe and the splicing tube.

[0010] Preferably, the driving assembly comprises a lower limit column, the bottom of the lower limit column is fixedly connected to the splicing tube, and a lifting rod is inserted into the top of the cavity of the lower limit column.

[0011] Preferably, the bracket assembly includes a convex plate fixed to the side of the lower limit column and an external bracket fixed to the side of the lifting rod, and a reinforcement rod is fixed between the top of the convex plate and the lower surface of the external bracket.

[0012] Preferably, a suspension column is fixed to the upper surface of the stepped pipe, and the top of the suspension column is fixed to the lower surface of the synchronous cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention adopts a combination arrangement of a stepped pipe, a trigger plate, a driven plate and a splicing groove. Firstly, the stepped pipe can arrange the silicone tube in a ring shape outside the pressing point to reduce the influence on the adjacent pressing points, thereby avoiding the mutual influence of adjacent detection points to reduce the accuracy of the detection result; secondly, the silicone tube can be adsorbed on the liquid crystal screen through the negative pressure transmitted in the splicing groove to prevent the glass fragments from splashing out after the liquid crystal screen is broken, so as to improve the safety of the detection device; thirdly, the trigger plate and the driven plate can reduce the extension length of the crack when the pressing point is broken, thereby avoiding increasing the stress on the adjacent points and increasing the extension length of the crack to destroy the original rupture marks, thereby facilitating the subsequent classification and analysis of the problem by the detection personnel.

[0015] 2. The present invention sets a connecting spring, which can make one end of the trigger plate continue to descend following the downward pressure of the pressing rod, so as to timely reduce the outward extension length of the shattering point when the screen glass surface is shattered, avoiding mutual influence between adjacent detection points.

[0016] 3. The present invention arranges a trigger plate and a follower plate. The follower plate can press down the silicone tube after one end of the trigger plate drops, thereby lowering the peak point of the shock wave transmitted from the breaking point, thereby reducing the negative impact on the pressure detection of nearby points, thereby improving the accuracy of the detection device during multi-point detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a pressure resistance detection device for liquid crystal display production proposed by the present invention;

[0018] Figure 2 This is a structural schematic diagram of a splicing tube of a compression testing device for liquid crystal display production proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the explosion structure of a pressure resistance detection device for liquid crystal display production proposed by the present invention;

[0020] Figure 4 This is a schematic diagram of the explosion structure at the silicone cylinder of a pressure resistance testing device for liquid crystal display production proposed by the present invention;

[0021] Figure 5 This is a schematic cross-sectional structure diagram of a pressure resistance testing device for liquid crystal display production proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the explosion structure at the splicing groove of a pressure resistance detection device for liquid crystal display production proposed by the present invention;

[0023] Figure 7 This is a schematic diagram of the explosion structure at the lower limit column of a pressure resistance detection device for liquid crystal display production proposed by the present invention;

[0024] Figure 8 This is a structural schematic diagram of a driven plate of a pressure resistance testing device for liquid crystal display production proposed by the present invention;

[0025] Fig. 9 This is a structural schematic diagram of a trigger plate of a pressure resistance detection device for liquid crystal display production proposed by the present invention;

[0026] Fig.10 This is a schematic cross-sectional structure diagram of a synchronous cylinder of a pressure resistance detection device for liquid crystal display production proposed by the present invention;

[0027] Fig.11 for Fig.10 Schematic diagram of the enlarged structure at point A in the middle.

[0028] In the figure: 1. connecting cylinder; 2. lifting plug; 3. synchronization cylinder; 4. stepped pipe; 5. changing joint; 6. trigger plate; 7. driven plate; 8. connecting spring; 9. negative pressure chamber; 10. splicing groove; 11. silicone cylinder; 12. point plate; 13. groove cylinder; 14. lower pressure rod; 15. piston plate; 16. detection spring; 17. telescopic cylinder; 18. connecting pipe; 19. upper connecting pipe; 20. middle pipe; 21. lower connecting pipe; 22. splicing pipe; 23. positive pressure pipe; 24. lower limit column; 25. lifting rod; 26. convex plate; 27. external bracket; 28. reinforcement rod; 29. ​​suspension column. DETAILED DESCRIPTION

[0029] 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. Obviously, 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.

[0030] Example, see Figures 1 to 11 A pressure resistance detection device for liquid crystal display production includes a multi-point detection component. Further, the multi-point detection component includes a point plate 12, and the point plate 12 is connected to the connecting tube 1. The point plate 12 includes an external extension rod and a middle polygonal plate, and one end of the external extension rod is fixed to the side of the middle polygonal plate.

[0031] A further advantage of adopting the above method is that the middle polygonal plate is arranged in a polygonal shape, and the synchronous cylinder 3 is arranged at the bottom of the angle of the middle polygonal plate and the end of the external extension rod, so that the inspection personnel can select the pressure point according to the specifications and shape of the LCD screen, so that the LCD screen can be tested at multiple points at the same time to improve the inspection efficiency.

[0032] A connecting cylinder 1 is fixed to the bottom of the multi-point detection component, a lifting plug 2 is inserted into the inner wall of the cavity of the connecting cylinder 1, a synchronous cylinder 3 is sleeved on the outer wall of the connecting cylinder 1, and the bottom of the lifting plug 2 passes through the connecting cylinder 1 and is fixedly connected to the inner bottom wall of the synchronous cylinder 3, and a positive and negative pressure component is provided at the bottom of the synchronous cylinder 3. Furthermore, the positive and negative pressure component includes a groove cylinder 13 fixed to the bottom of the synchronous cylinder 3, a lower pressure rod 14 is inserted into the inner wall of the groove cylinder 13, a piston plate 15 is fixed to the top of the lower pressure rod 14, a detection spring 16 is fixed between the bottom of the piston plate 15 and the inner bottom wall of the groove cylinder 13, and the detection spring 16 is sleeved on the side of the lower pressure rod 14, a telescopic cylinder 17 is inserted into the top of the piston plate 15, and the top of the telescopic cylinder 17 is fixed to the bottom of the synchronous cylinder 3, a connecting pipe 18 is fixed to the side of the groove cylinder 13, and the bottom of the connecting pipe 18 is fixed to the side of the step pipe 4.

[0033] Further advantages of adopting the above method are: the downward pressure of the piston plate 15 can drive the downward pressure rod 14 to apply pressure to the LCD screen for detection, and secondly, it can extract the gas in the step pipe 4, the trigger plate 6, the driven plate 7 and the splicing groove 10 through the connecting pipe 18, so that the silicone tube 11 can be sucked on the surface of the LCD screen to reduce the impact on adjacent pressure points.

[0034] It should be noted that when the pressing rod 14 presses down the LCD screen, a depression will be formed. At this time, the silicone tube 11 can be firmly adsorbed on the surface of the LCD screen due to the negative pressure, which provides necessary technical support for the subsequent pressing rod 14 to crush the LCD screen and quickly reduce and block the transmission of shock, avoid affecting adjacent pressure points, and reduce the extension length of cracks at the broken points.

[0035] The positive and negative pressure components are connected to the connecting cylinder 1, the lifting plug 2 and the synchronous cylinder 3 through a conducting component. Furthermore, the conducting component includes an upper connecting pipe 19, an intermediate pipe 20 and a lower connecting pipe 21 which are respectively opened inside the connecting cylinder 1, the lifting plug 2 and the synchronous cylinder 3. The bottom end of the lower connecting pipe 21 is connected to the telescopic cylinder 17.

[0036] A further advantage of adopting the above method is that the upper connecting pipe 19, the middle pipe 20 and the lower connecting pipe 21 can connect the positive pressure pipe 23 with the telescopic cylinder 17 when the lifting plug 2 moves down to the lowest point, so that the subsequent pressing rod 14 can press down the LCD screen and the silicone tube 11 can be adsorbed on the surface of the LCD screen.

[0037] A stepped pipe 4 is fixed to the bottom of the positive and negative pressure assembly, a suspension column 29 is fixed to the upper surface of the stepped pipe 4, the top of the suspension column 29 is fixed to the lower surface of the synchronous cylinder 3, there are several stepped pipes 4, and the multiple stepped pipes 4 are connected to each other in a cone shape, the inner wall of the bottom end of the stepped pipe 4 is hinged with several direction-changing joints 5 through a rotating shaft, a trigger plate 6 and a driven plate 7 are fixed to the bottom of the direction-changing joint 5, a connecting spring 8 is fixed to the top of the trigger plate 6, and the top of the connecting spring 8 is fixed to the lower surface of the stepped pipe 4, and a negative pressure cavity 9 is opened between the direction-changing joint 5 and the inner wall of the trigger plate 6 and the driven plate 7 A splicing groove 10 is fixed at one end of the trigger plate 6 and the driven plate 7, and the splicing groove 10 is connected to the negative pressure chamber 9. A silicone tube 11 is inserted at the bottom of the splicing groove 10. Several splicing grooves 10 can be enclosed in a ring shape. A multi-conducting component is fixed on the top of the multi-point detection component. Further, the multi-conducting component includes a splicing tube 22 fixed to the top of the point plate 12 and a positive pressure pipe 23 opened inside the point plate 12. There are six splicing tubes 22, and the six splicing tubes 22 are enclosed in a ring shape. The two ends of the positive pressure pipe 23 are respectively connected to the upper connecting pipe 19 and the splicing tube 22.

[0038] A further advantage of adopting the above method is that the splicing pipe 22 serves to connect the positive pressure pipe 23 and the lower limit column 24, so that when the lifting rod 25 is pressed down to provide positive pressure, the synchronous cylinder 3 can be moved down to make the lower pressing rod 14 close to the liquid crystal screen.

[0039] It should be noted that: the driven plate 7 is arranged on the outside of the lower pressure rod 14, and the trigger plate 6 is separated from the driven plate 7 by an amplitude distance, and the amplitude distance changes according to the force of the pressure detection, and the driven plate 7 is not only limited to the circle set in the figure, but can also extend outward in multiple layers. Therefore, after the lower pressure rod 14 crushes the screen, the trigger plate 6 moves downward quickly under the action of the connecting spring 8 to initially reduce the amplitude, and can also quickly drag the screen between the driven plate 7, so that the glass surface can be quickly broken to prevent the vibration from being transmitted to other points, causing other points to be subjected to increased force and break away from the balance point, affecting the accuracy of the detection result.

[0040] A driving assembly is fixed on the top of the multi-directional conductive assembly. Further, the driving assembly includes a lower limit column 24 , the bottom of which is fixedly connected to the splicing tube 22 , and a lifting rod 25 is inserted into the top of the cavity of the lower limit column 24 .

[0041] A further advantage of adopting the above method is that the lifting rod 25 serves as the only power device of the device, providing a power source for each structural member to complete corresponding actions.

[0042] A bracket assembly is provided on the side of the driving assembly. Furthermore, the bracket assembly includes a protruding plate 26 fixed to the side of the lower limit column 24 and an external bracket 27 fixed to the side of the lifting rod 25. A reinforcing rod 28 is fixed between the top of the protruding plate 26 and the lower surface of the external bracket 27.

[0043] A further advantage of adopting the above method is that the external bracket 27 is fixed to the LCD screen capture device by bolts, so that the lifting rod 25 can be located at the center of the screen, providing conditions for the pressing rod 14 to simultaneously apply pressure to multiple points on the screen for detection.

[0044] The present invention is as follows before use Figure 1 As shown, the external bracket 27 is fixed to the LCD screen fixture by bolts, so that the point plate 12 is located at the center of the screen to facilitate subsequent pressure testing of the screen's pressure resistance;

[0045] When using Figure 5 As shown, the output end of the lifting rod 25 is inserted downward into the inner wall of the lower limit column 24, so that the positive pressure generated inside is transmitted to the positive pressure pipe 23 through the splicing pipe 22, and then the positive pressure pipe 23 drives the positive pressure pipe 23 to drive ... Fig.10 The lifting plug 2 shown in the figure moves downward until the upper connecting pipe 19, the middle pipe 20 and the lower connecting pipe 21 are connected. This step is to make the lower pressing rod 14 quickly approach the LCD screen to provide conditions for the subsequent lower pressing rod 14 to apply pressure to the screen for detection. At this time, the lower pressing rod 14 will be driven to move further downward through the piston plate 15. After the piston plate 15 moves downward, it will extract the gas in the step pipe 4 and the splicing groove 10 through the connecting pipe 18, so that the silicone tube 11 is adsorbed on the surface of the LCD screen;

[0046] Later, when the downward pressure rod 14 applies pressure to cause the screen to break, the splicing groove 10 connected to one end of the trigger plate 6 moves downward rapidly under the action of the connecting spring 8, initially reducing the shock spreading outward from the screen. After one end of the trigger plate 6 moves downward, it will drive one end of the driven plate 7 to press down the silicone tube 11 to quickly offset the shock spreading outward from the screen and make the glass surface at that location break quickly to prevent the fracture from spreading outward and affecting other points.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure resistance detection device for liquid crystal display production, comprising a multi-point detection component, characterized in that: A connecting cylinder (1) is fixed at the bottom of the multi-point detection component, a lifting plug (2) is inserted into the inner wall of the cavity of the connecting cylinder (1), a synchronous cylinder (3) is sleeved on the outer wall of the connecting cylinder (1), and the bottom of the lifting plug (2) passes through the connecting cylinder (1) and is fixedly connected to the inner bottom wall of the synchronous cylinder (3), a positive and negative pressure assembly is provided at the bottom of the synchronous cylinder (3), and the positive and negative pressure assembly is connected to the connecting cylinder (1), the lifting plug (2) and the synchronous cylinder (3) through a conducting assembly, a stepped pipe (4) is fixed at the bottom of the positive and negative pressure assembly, the stepped pipe (4) is a plurality of stepped pipes (4), and the plurality of stepped pipes (4) are connected to each other in a conical shape, the inner wall of the bottom end of the stepped pipe (4) is hinged with a plurality of direction-changing joints (5) through a rotating shaft, and the direction-changing joints (5) are connected to each other in a conical shape. A trigger plate (6) and a driven plate (7) are fixed to the bottom of the multi-point detection component, a connecting spring (8) is fixed to the top of the trigger plate (6), and the top of the connecting spring (8) is fixed to the lower surface of the stepped pipe (4), a negative pressure chamber (9) is formed on the inner walls of the direction-changing joint (5) and the trigger plate (6) and the driven plate (7), one end of each of the trigger plate (6) and the driven plate (7) is fixed with a splicing groove (10), the splicing groove (10) is connected to the negative pressure chamber (9), a silicone tube (11) is inserted at the bottom of the splicing groove (10), and a plurality of the splicing grooves (10) can be enclosed in a ring shape, a multi-conducting component is fixed to the top of the multi-conducting component, a driving component is fixed to the top of the multi-conducting component, and a bracket component is provided on the side of the driving component.

2. A pressure resistance detection device for liquid crystal display production according to claim 1, characterized in that: The multi-point detection assembly comprises a point plate (12), and the point plate (12) is connected to the connection tube (1), the point plate (12) comprises an external extension rod and a middle polygonal plate, and one end of the external extension rod is fixed to the side of the middle polygonal plate.

3. A pressure resistance detection device for liquid crystal display production according to claim 2, characterized in that: The positive and negative pressure assembly comprises a groove cylinder (13) fixed to the bottom of the synchronous cylinder (3), a lower pressure rod (14) is inserted into the inner wall of the groove cylinder (13), a piston plate (15) is fixed to the top of the lower pressure rod (14), a detection spring (16) is fixed between the bottom of the piston plate (15) and the inner bottom wall of the groove cylinder (13), and the detection spring (16) is sleeved on the side of the lower pressure rod (14), a telescopic cylinder (17) is inserted into the top of the piston plate (15), the top of the telescopic cylinder (17) is fixed to the bottom of the synchronous cylinder (3), a connecting pipe (18) is fixed to the side of the groove cylinder (13), and the bottom of the connecting pipe (18) is fixed to the side of the step pipe (4).

4. A pressure resistance detection device for liquid crystal display production according to claim 3, characterized in that: The conduction assembly comprises an upper connecting pipe (19), an intermediate pipe (20) and a lower connecting pipe (21) which are respectively opened inside the connecting cylinder (1), the lifting plug (2) and the synchronous cylinder (3); the bottom end of the lower connecting pipe (21) is connected to the telescopic cylinder (17).

5. A pressure resistance testing device for liquid crystal display production according to claim 4, characterized in that: The multi-directional conductive component comprises a splicing tube (22) fixed to the top of the point plate (12) and a positive pressure pipe (23) opened inside the point plate (12), the number of the splicing tubes (22) is six, and the six splicing tubes (22) are enclosed in a ring shape, and the two ends of the positive pressure pipe (23) are respectively connected to the upper connecting pipe (19) and the splicing tube (22).

6. A pressure resistance testing device for liquid crystal display production according to claim 5, characterized in that: The driving assembly comprises a lower limit column (24), the bottom of which is fixedly connected to the splicing tube (22), and a lifting rod (25) is inserted into the top of the cavity of the lower limit column (24).

7. A pressure resistance testing device for liquid crystal display production according to claim 6, characterized in that: The bracket assembly comprises a convex plate (26) fixed to the side of the lower limit column (24) and an external bracket (27) fixed to the side of the lifting rod (25), and a reinforcing rod (28) is fixed between the top of the convex plate (26) and the lower surface of the external bracket (27).

8. The pressure resistance detection device for liquid crystal display production according to claim 7, characterized in that: A suspension column (29) is fixed to the upper surface of the stepped pipe (4), and the top of the suspension column (29) is fixed to the lower surface of the synchronous cylinder (3).

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