A fully automatic assembly device for vehicle-mounted displays

Abstract

The present invention discloses a fully automatic assembly device for vehicle-mounted display screens, which relates to the technical field of display screen assembly. The present invention includes an assembly table and a rotating disk. There are four straight grooves on the assembly table, and four arc grooves on the rotating disk. Slide rods are slidably arranged in each straight groove, and follower blocks are arranged at one ends of the slide rods; the alignment mechanism includes a cross plate, a first alignment plate is arranged on the cross plate, and a second alignment plate is arranged on each pair of alignment plates; the driving mechanism includes a screw rod; the first alignment plate and the second alignment plate first rise and then move towards the middle, so as to align the liquid crystal display module and the cover glass, and after the alignment is completed, the lifting column drives the cover glass to move downwards to fit with the liquid crystal display module. Subsequently, the first alignment plate and the second alignment plate move downwards, which is convenient for removing the liquid crystal display module; the cooperation between the first electric guide rail and the first moving plate can push the liquid crystal display module and the cover glass after pressing towards the dial indicator to detect the positions of the liquid crystal display module and the cover glass after pressing.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen assembly, and particularly relates to a fully automatic assembly device for vehicle-mounted display screens. Background Art

[0002] A vehicle-mounted display screen is a screen device installed inside a vehicle for displaying various types of information. It has become an indispensable part of modern vehicles and has several key characteristics; a vehicle-mounted display screen usually consists of components such as a display panel, a cover glass (CG), a liquid crystal display module (LCM), and a circuit board.

[0003] During the production of vehicle-mounted display screens, the liquid crystal display module (LCM) and the cover glass (CG) need to be pressed together with glue. Existing devices for assembling the liquid crystal display module and the cover glass together require special fixtures. When in use, the liquid crystal display module is placed in the fixture, and then the cover glass (14) is placed on the liquid crystal display module for pressing. However, since the area of the cover glass (14) is larger than that of the liquid crystal display module, the following problems will occur: 1. It is inconvenient to take out the pressed cover glass and liquid crystal display module from the fixture; 2. Due to the obstruction of the cover glass or the problem of light refraction, it is inconvenient to completely align the cover glass and the liquid crystal display module, resulting in a relatively high defective rate. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic assembly device for vehicle-mounted display screens to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A fully automatic assembly device for vehicle-mounted display screens, including an assembly table and a pressing mechanism provided thereon. Four straight grooves are opened on the assembly table. A rotating disk is rotatably arranged inside the assembly table. Four arc grooves are opened on the rotating disk. A sliding rod is slidably arranged in each straight groove. One end of each sliding rod close to the rotating disk is fixedly provided with a follower block. Each follower block is movably arranged in each arc groove in a one-to-one correspondence; a positioning mechanism, which includes a cross plate fixedly provided on the top of each sliding rod. A first positioning plate is slidably arranged on each cross plate. A second positioning plate is fixedly provided on each first positioning plate; a driving mechanism, which includes a screw rod rotatably arranged inside the assembly table. The screw rod is threadedly connected to the rotating disk; a measuring mechanism, which includes a fixing plate fixedly provided on one side of the assembly table. A dial indicator is fixedly provided at one end of the fixing plate away from the assembly table.

[0006] Preferably, the pressing mechanism includes a support frame fixedly provided on the assembly table. A cylinder is fixedly provided on the support frame. A pressing plate is fixedly provided at the bottom of the cylinder.

[0007] Preferably, an arc plate is fixedly arranged on the outer peripheral surface of the rotating disc. Fixed frames are fixedly arranged on both sides of the arc plate. A rotating plate is rotatably arranged in each fixed frame. A second torsion spring is fixedly arranged between each rotating plate and each corresponding fixed frame. A limiting plate is fixedly arranged in the assembly table.

[0008] Preferably, two abutting blocks are fixedly arranged on the arc plate. A first avoidance groove and a second avoidance groove are formed on the limiting plate.

[0009] Preferably, four lifting columns are arranged on the assembly table. A ball is arranged at the top end of each lifting column.

[0010] Preferably, four tooth columns are rotatably arranged in the assembly table. An abutting ball is fixedly arranged in each tooth column. A spiral groove adapted to the abutting ball is formed on the outer peripheral surface of each lifting column. A cross bar is slidably arranged on each lifting column.

[0011] Preferably, tooth plates adapted to the tooth columns are fixedly arranged at both ends of two of the cross plates. Two springs are fixedly arranged between each first alignment plate and each corresponding cross plate. A first torsion spring is fixedly arranged between each tooth column and the assembly table.

[0012] Preferably, grooves are formed on both the assembly table and the fixing plate. The grooves on the assembly table are in one-to-one communication with the grooves on the fixing plate. A first electric guide rail and a second electric guide rail are fixedly arranged on the assembly table. A positioning reference block is fixedly arranged on the fixing plate.

[0013] Preferably, a plurality of rubber-coated rollers are rotatably arranged on the fixing plate.

[0014] In the above technical solution, the present invention provides a fully automatic assembly device for vehicle-mounted display screens, having the following beneficial effects: Through the cooperation of the screw rod, the rotating disc, the rotating plate and the limiting plate, the first alignment plate and the second alignment plate first rise and then move towards the middle, so as to align the liquid crystal display module and the cover glass. After the alignment is completed, the lifting column drives the cover glass to move downwards to fit with the liquid crystal display module. Subsequently, the rotating disc is controlled to move downwards, so that the first alignment plate and the second alignment plate move downwards, thus facilitating the removal of the pressed liquid crystal display module and the cover glass; Through the cooperation of the first electric guide rail and the first moving plate, the pressed liquid crystal display module and the cover glass can be pushed towards the dial indicator, so as to detect the positions of the pressed liquid crystal display module and the cover glass. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0016] Figure 1 Structural schematic diagram of the whole provided by the embodiment of the present invention;

[0017] Figure 2 Structural schematic diagram of the first moving plate provided by the embodiment of the present invention;

[0018] Figure 3 Structural schematic diagram of the dial indicator provided by the embodiment of the present invention;

[0019] Figure 4 Structural schematic diagram of the rotating disk provided by the embodiment of the present invention;

[0020] Figure 5 Structural schematic diagram of the arc groove and the straight groove provided by the embodiment of the present invention;

[0021] Figure 6 Structural schematic diagram of the limiting plate provided by the embodiment of the present invention;

[0022] Figure 7 Structural schematic diagram of the groove provided by the embodiment of the present invention;

[0023] Figure 8 Structural schematic diagram of the spring provided by the embodiment of the present invention;

[0024] Figure 9 Structural schematic diagram of the abutting ball provided by the embodiment of the present invention;

[0025] Figure 10 Structural schematic diagram of the lifting column provided by the embodiment of the present invention;

[0026] Figure 11 Provided by the embodiment of the present invention Figure 7 Enlarged view of the structure at A in

[0027] Explanation of reference numerals:

[0028] 1. Assembly table; 101. Movable cavity; 102. Groove; 2. Support frame; 3. Cylinder; 4. Pressing plate; 5. Fixed plate; 6. Positioning reference block; 7. Micrometer; 8. Measuring rod; 9. Rubber-coated roller; 10. First electric guide rail; 11. First moving plate; 12. Second electric guide rail; 13. Second moving plate; 14. Cover glass; 15. Liquid crystal display module; 21. Screw; 22. Rotating disk; 23. Telescopic sleeve; 24. Servo motor; 25. Straight groove; 26. Arc groove; 27. Follow-up block; 28. Slide bar; 31. Cross plate; 32. Toothed plate; 33. First alignment plate; 34. Second alignment plate; 35. Spring; 36. Toothed column; 37. Contact ball; 38. Cross bar; 39. Lifting column; 391. Spiral groove; 392. Ball; 41. First torsion spring; 42. Arc plate; 43. Fixed frame; 44. Rotating plate; 45. Contact block; 46. Second torsion spring; 47. Limiting plate; 48. First avoidance groove; 49. Second avoidance groove. Specific implementation mode

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0030] Please refer to Figures 1-11, a fully automatic assembly device for vehicle-mounted display screens, comprising an assembly table 1 and a pressing mechanism arranged thereon. Four straight grooves 25 are provided on the assembly table 1. A rotating disk 22 is rotatably arranged inside the assembly table 1. Four arc grooves 26 are provided on the rotating disk 22. A sliding rod 28 is slidably arranged in each straight groove 25. One end of each sliding rod 28 close to the rotating disk 22 is fixedly provided with a follower block 27. Each follower block 27 is movably arranged in each arc groove 26 in a one-to-one correspondence; an alignment mechanism, which comprises a cross plate 31 fixedly arranged on the top of each sliding rod 28. A first alignment plate 33 is slidably arranged on each cross plate 31. A second alignment plate 34 is fixedly arranged on each first alignment plate 33; a driving mechanism, which comprises a screw rod 21 rotatably arranged inside the assembly table 1. The screw rod 21 is in threaded connection with the rotating disk 22; a measuring mechanism, which comprises a fixing plate 5 fixedly arranged on one side of the assembly table 1. A dial indicator 7 is fixedly arranged at one end of the fixing plate 5 away from the assembly table 1;The assembly table 1 is a rectangular cylinder with a hollow interior. Four movable cavities 101 are provided on the assembly table 1, and each movable cavity 101 is in one-to-one communication with each straight groove 25. Each cross plate 31, the first alignment plate 33, and the second alignment plate 34 are all movable within the corresponding movable cavity 101. The screw rod 21 is rotatably connected to the top end of the assembly table 1. The cross section of the slide rod 28 is rectangular, and the slide rod 28 can slide up and down and left and right within the corresponding straight groove 25. The follower block 27 moves along the corresponding arc groove 26. In the initial state, both the first alignment plate 33 and the second alignment plate 34 are within the movable cavity 101. When in use, the liquid crystal display module 15 with glue on the top is placed at the middle position of the assembly table 1, and then the cover glass 14 is placed on the liquid crystal display module 15. Then, the screw rod 21 is rotated forward. When the screw rod 21 rotates forward, it first drives the rotating disk 22 to move upward. When the rotating disk 22 moves upward, it drives each slide rod 28 to move upward, so that each first alignment plate 33 and the second alignment plate 34 extend from the end of the movable cavity 101 away from the liquid crystal display module 15. When the rotating disk 22 moves to the upper end of the thread groove of the screw rod 21, the top surface of the first alignment plate 33 is slightly lower than the top surface of the liquid crystal display module 15, and the height of the cover glass 14 is between the two end surfaces of the second alignment plate 34. At this time, continue to rotate the screw rod 21 forward. By driving the rotating disk 22 to rotate forward through the end of the thread groove of the screw rod 21, when the rotating disk 22 rotates forward, through the cooperation of each arc groove 26 and the straight groove 25, each follower block 27 moves along the arc groove 26 towards the position close to the center of the rotating disk 22, so that the slide rod 28 drives the first alignment plate 33 and the second alignment plate 34 to move towards the middle position. When the first alignment plate 33 moves, it abuts against the edge of the liquid crystal display module 15, and when the second alignment plate 34 moves, it abuts against the edge of the cover glass 14. As the slide rod 28 moves, the positions of the liquid crystal display module 15 and the cover glass 14 are completely aligned. At this time, the cover glass 14 and the liquid crystal display module 15 are pressed together through the pressing mechanism, completing the pressing assembly of the cover glass 14 and the liquid crystal display module 15. Subsequently, reverse the screw rod 21. The screw rod 21 first drives the disk to move downward, so that the first alignment plate 33 and the second alignment plate 34 retract into the corresponding movable cavity 101 again. At this time, it is convenient to take out the liquid crystal display module 15 and the cover glass 14. The taken-out liquid crystal display module 15 is placed on the fixing plate 5 and pushed towards the dial indicator 7. The distance between the edge of the cover glass 14 and the edge of the liquid crystal display module 15 is measured through the dial indicator 7. If it is qualified, the next assembly step is carried out; if it is unqualified, it is picked out. A telescopic sleeve 23 is rotatably arranged between the rotating disk 22 and the inner bottom wall of the assembly table 1. The telescopic sleeve 23 is composed of two rings, and the rotating disk 22 is supported to a certain extent through the telescopic sleeve 23. The distance between the side of the first alignment plate 33 close to the screw rod 21 and the side of the second alignment plate 34 close to the screw rod 21 is equal to the distance between the edge of the liquid crystal display module 15 and the edge of the cover glass 14 after alignment.;

[0031] Specifically, the pressing mechanism includes a support frame 2 fixedly arranged on the assembly table 1. A cylinder 3 is fixedly arranged on the support frame 2, and a pressing plate 4 is fixedly arranged at the bottom of the cylinder 3. The area of the pressing plate 4 is larger than that of the cover glass 14. The pressing plate 4 is fixedly connected to the downward pressing end of the cylinder 3. After the cover glass 14 and the liquid crystal display module 15 are aligned, the cylinder 3 is started, and the pressing plate 4 is driven by the cylinder 3 to move downward, so as to press the cover glass 14 on the liquid crystal display module 15.

[0032] In another embodiment of the present invention: arc plates 42 are fixedly arranged on the outer peripheral surface of the rotating disk 22. Fixed frames 43 are fixedly arranged on both sides of each arc plate 42. Rotating plates 44 are rotatably arranged in each fixed frame 43. Second torsion springs 46 are fixedly arranged between each rotating plate 44 and each corresponding fixed frame 43. A limiting plate 47 is fixedly arranged in the assembly table 1. As Figure 6 shown, the fixed frames 43 are respectively fixedly arranged at two diagonal corners of the arc plate 42. In the initial state, the right rotating plate 44 abuts against the limiting plate 47. At this time, both the first alignment plate 33 and the second alignment plate 34 are at the bottom of the moving cavity 101. When it is necessary to align the liquid crystal display module 15 and the cover glass 14, the screw rod 21 is rotated forward. Due to the abutment between the right rotating plate 44 and the limiting plate 47, the rotating disk 22 will not rotate with the rotation of the screw rod 21, so as to control the rising of the rotating disk 22, and further make the first alignment plate 33 and the second alignment plate 34 rise. When the liquid crystal display module 15 and the cover glass 14 are aligned, the screw rod 21 is rotated backward. At this time, due to the abutment between the left rotating plate 44 and the limiting plate 47, the rotating disk 22 descends. At this time, the alignment is completed and the cover glass 14 and the liquid crystal display module 15 can be pressed.

[0033] Specifically, two abutting blocks 45 are fixedly arranged on the arc plate 42. A first avoidance groove 48 and a second avoidance groove 49 are formed on the limiting plate 47. As Figure 6 shown, one of the two abutting blocks 45 is fixedly arranged on the left side of the upper fixed frame 43, and the other abutting block 45 is fixedly arranged on the right side of the lower fixed frame 43. Each rotating plate 44 is perpendicular to the fixed frame 43 through each second torsion spring 46. Each abutting block 45 abuts against the rotating plate 44 when it is perpendicular. As Figure 6As shown, in the initial state, the right side of the rotating plate 44 on the right abuts against the limiting plate 47. At this time, the forward rotation of the screw rod 21 causes the rotating plate 44 on the right not to rotate leftward through the abutting block 45, so that the rotating disk 22 together with the arc plate 42 moves upward. During the upward movement of the rotating disk 22, as the rotating disk 22 moves upward, when the first alignment plate 33 and the second alignment plate 34 move upward to the specified position, the rotating plate 44 on the right just enters the upper first avoidance groove 48. At this time, the rotating disk 22 also moves to the upper end of the thread groove of the screw rod 21. Continuing to rotate the screw rod 21 forward, the screw rod 21 will drive the rotating disk 22 to rotate forward. The abutment of the rotating plate 44 on the left with the limiting plate 47 will cause rotation, so that the protruding first alignment plate 33 and the second alignment plate 34 move toward the middle, and then align the liquid crystal display module 15 and the cover glass 14. When the alignment is completed, the rotating plate 44 on the left just passes by the limiting plate 47. At this time, reverse-rotate the screw rod 21. The abutment of the rotating plate 44 on the left with the limiting plate 47 causes the rotating disk 22 to move downward. When the rotating disk 22 moves downward to the lower end of the thread groove of the screw rod 21, the rotating plate 44 on the left just enters the lower second avoidance groove 49. Continuing to reverse-rotate the screw rod 21, the screw rod 21 drives the rotating disk 22 to reverse-rotate, so that the slide rod 28 moves outward, and then the first alignment plate 33 and the second alignment plate 34 return to the initial position. At this time, the rotating plate 44 on the right just passes by the limiting plate 47.

[0034] Further, four lifting columns 39 are provided on the assembly table 1, and ball beads 392 are provided at the top of each lifting column 39. During use, place the liquid crystal display module 15 between the four lifting columns 39. The four lifting columns 39 are symmetrically arranged, and then place the cover glass 14 on the four lifting columns 39. Since there is glue on the top surface of the liquid crystal display module 15, during assembly, it is necessary to first align the positions of the cover glass 14 and the liquid crystal display module 15, and then the liquid crystal display module 15 and the cover glass 14 can be bonded together. Support the cover glass 14 through the four lifting columns 39. Rotate the screw rod 21 forward, and the first alignment plate 33 and the second alignment plate 34 move toward the middle at the same time. The ball beads 392 reduce the friction when the second alignment plate 34 pushes the cover glass 14. When the alignment between the liquid crystal display module 15 and the cover glass 14 is completed, the screw rod 21 drives the rotating disk 22 to continue rotating forward, so that each lifting column 39 slowly descends and retracts into the assembly table 1, so that the cover glass 14 and the liquid crystal display module 15 are bonded together under the condition of neat alignment.

[0035] Further, four tooth columns 36 are rotatably arranged in the assembly table 1, a contact ball 37 is fixedly arranged in each tooth column 36, a spiral groove 391 adapted to the contact ball 37 is formed on the outer peripheral surface of each lifting column 39, and a cross rod 38 is slidably arranged on each lifting column 39; a cross groove adapted to the cross rod 38 is formed in the lifting column 39. Through the cooperation of the cross rod 38, the lifting column 39 can only slide up and down on the assembly table 1. Each contact ball 37 is correspondingly located in each spiral groove 391. When the tooth column 36 rotates, the lifting column 39 moves downward through the cooperation of the contact ball 37 and the spiral groove 391, so that the cover glass 14 on each lifting column 39 approaches the liquid crystal display module 15 when the alignment is completed.

[0036] Specifically, tooth plates 32 adapted to the tooth columns 36 are fixedly arranged at both ends of two cross plates 31, two springs 35 are fixedly arranged between each first alignment plate 33 and each cross plate 31, and a first torsion spring 41 is fixedly arranged between each tooth column 36 and the assembly table 1; as Figure 11 shown, an annular groove for the first torsion spring 41 to move is formed on the assembly table 1. In the initial state, each tooth column 36 and the lifting column 39 are kept at a certain rotation angle through the torsion spring, so that the lifting column 39 extends out of the assembly table 1. When the rotating disk 22 rotates forward and drives the sliding rod 28 to move towards the screw rod 21 through the arc groove 26 and the straight groove 25, the first alignment plate 33 and the second alignment plate 34 first abut against the liquid crystal display module 15 and the cover glass 14 respectively, so that the liquid crystal display module 15 and the cover glass 14 are aligned. When the liquid crystal display module 15 and the cover glass 14 are aligned, the bottom of the first alignment plate 33 abuts against the inner wall of the movable cavity 101, so as to prevent extrusion of the liquid crystal display module 15. When the liquid crystal display module 15 is aligned, the four sides of the liquid crystal display module 15 are aligned with the corresponding inner walls of the movable cavity 101. At this time, when the rotating disk 22 continues to rotate forward, the rotating disk 22 will continue to drive the sliding rod 28 and the cross plate 31 to move towards the screw rod 21, so that each spring 35 is compressed. The tooth plates 32 on both sides of the cross plate 31 will abut against and engage with the corresponding tooth columns 36 during this process, and drive the tooth columns 36 to rotate, so that each lifting column 39 retracts into the assembly table 1, and then the cover glass 14 and the liquid crystal display module 15 are attached when the alignment is completed. When the rotating disk 22 moves downward, the rotating disk 22 is driven to rotate reversely by the screw rod 21. At this time, the downward moving tooth plate 32 moves away from the tooth column 36, so that the lifting column 39 rises to the initial position.

[0037] In another embodiment of the present invention: grooves 102 are formed on both the assembly table 1 and the fixed plate 5, the grooves 102 on the assembly table 1 are correspondingly communicated with the grooves 102 on the fixed plate 5, a first electric guide rail 10 and a second electric guide rail 12 are fixedly arranged on the assembly table 1, and a positioning reference block 6 is fixedly arranged on the fixed plate 5; as Figure 3As shown, the groove 102 on the upper side of the assembly table 1 communicates with the groove 102 on the upper side of the fixing plate 5, and the groove 102 on the lower side of the assembly table 1 communicates with the groove 102 on the lower side of the fixing plate 5. The first electric guide rail 10 is located in the groove 102 on the upper side, and the second electric guide rail 12 is located in the groove 102 on the lower side. One end of the first electric guide rail 10 away from the dial indicator 7 is provided with a first moving plate 11, and one end of the second electric guide rail 12 close to the dial indicator 7 is provided with a second moving plate 13. The first electric guide rail 10 can drive the first moving plate 11 to move along the first electric guide rail 10, and the second electric guide rail 12 can drive the second moving plate 13 to move along the second electric guide rail 12. This is the prior art and will not be elaborated here. After the liquid crystal display module 15 and the cover glass 14 are aligned, reverse the screw 21 to lower the rotating disk 22. At this time, both the first alignment plate 33 and the second alignment plate 34 retract into the movable cavity 101, and the lifting column 39 also retracts into the assembly table 1. Then start the cylinder 3 to move the pressing plate 4 downward to press the liquid crystal display module 15 and the cover glass 14 together. Subsequently, start the first electric guide rail 10, and drive the first moving plate 11 to move in the direction close to the dial indicator 7 through the first electric guide rail 10, so that the pressed liquid crystal display module 15 and the cover glass 14 move towards the dial indicator 7. The dial indicator 7 has a measuring rod 8. During use, first zero the dial indicator 7. The height of the measuring rod 8 is lower than the lower end surface of the cover glass 14. As the first moving plate 11 is pushed, the liquid crystal display module 15 pushes the measuring rod 8 to move. The cover glass 14 abuts against the side wall of the positioning reference block 6 during the movement. At this time, observe and record the data of the dial indicator 7. The data of the dial indicator 7 represents the distance between the side wall of the cover glass 14 and the side wall of the liquid crystal display module 15. According to this distance, it can be judged whether the pressing position of the liquid crystal display module 15 and the cover glass 14 is qualified. If it is unqualified, the pressed liquid crystal display module 15 and the cover glass 14 are picked out.

[0038] Specifically, a plurality of rubber-coated rollers 9 are rotatably arranged on the fixing plate 5; the upper end surface of the rubber-coated roller 9 is flush with the top surface of the assembly table 1. When the first moving plate 11 pushes the pressed liquid crystal display module 15 and the cover glass 14 onto the fixing plate 5, the sliding friction is changed into rolling friction through the rubber-coated rollers 9, so as to prevent the liquid crystal display module 15 from being scratched on the moving plate. A servo motor 24 is fixedly arranged in the assembly table 1, and the output end of the servo motor 24 is fixedly connected to the screw 21. The forward and reverse rotation of the screw 21 is controlled by the servo motor 24.

[0039] In another embodiment of the present invention: after the liquid crystal display module 15 is aligned with the cover glass 14, the driving rotary disk 22 is moved downward, so that the first alignment plate 33, the second alignment plate 34 and the lifting column 39 all move downward. Subsequently, the air cylinder 3 is activated to control the pressing force of the air cylinder 3 to pre-press the liquid crystal display module 15 and the cover glass 14. After the pre-pressing is completed, the first electric guide rail 10 is activated to make the first moving plate 11 push the pre-pressed liquid crystal display module 15 and the cover glass 14 towards the dial indicator 7. Subsequently, according to the data of the dial indicator 7, it is judged whether the pre-pressed liquid crystal display module 15 and the cover glass 14 are aligned neatly. If they are aligned neatly, the second electric guide rail 12 is activated to push the pre-pressed liquid crystal display module 15 and the cover glass 14 under the pressing plate 4. Then the air cylinder 3 is activated to adjust the downward pressure to perform formal pressing on the pre-pressed liquid crystal display module 15 and the cover glass 14. If they are not aligned neatly, the pre-pressed liquid crystal display module 15 is directly removed. Since the adhesion between the pre-pressed liquid crystal display module 15 and the cover glass 14 is small, at this time, the pre-pressed liquid crystal display module 15 and the cover glass 14 are more easily disassembled, so as to facilitate recycling. After the formal pressing of the pre-pressed product is completed or the pre-pressed unqualified product is removed, the driving screw 21 is used to reverse the rotary disk 22, so that the first alignment plate 33, the second alignment plate 34 and the lifting column 39 return to their initial positions.

[0040] Working principle: When in use, place the liquid crystal display module 15 in the middle position of the assembly table 1, and then place the cover glass 14 on the four lifting columns 39. Start the servo motor 24 to drive the screw rod 21 to rotate forward. Through the abutment between the rotating plate 44 and the limiting plate 47, the rotating disk 22 moves upward first. When the rotating disk 22 moves upward, it drives the first alignment plate 33 and the second alignment plate 34 to extend out of the movable cavity 101. When the rotating disk 22 moves up to the upper end of the thread groove of the screw rod 21, the corresponding rotating disk 22 moves to the first avoidance groove 48. The upper end surface of the first alignment plate 33 is at the same height as the upper end surface of the liquid crystal display module 15. At this time, continue to rotate the screw rod 21 forward, and the screw rod 21 will drive the rotating disk 22 to rotate forward. When the rotating disk 22 rotates forward, the sliding rod 28 moves toward the middle of the assembly table 1 through the cooperation of the arc groove 26 and the straight groove 25. When the rotating disk 22 rotates forward by a specified angle, the lower end of the first alignment plate 33 abuts against the inner wall of the movable cavity 101. At this time, stop the servo motor 24. The first alignment plate 33 and the second alignment plate 34 complete the alignment of the liquid crystal display module 15 and the cover glass 14. At this time, as the sliding rod 28 continues to move, the toothed plate 32 meshes with the corresponding toothed column 36 and drives the toothed column 36 to rotate, so that each lifting column 39 descends, and then the liquid crystal display module 15 and the cover glass 14 are attached together in the case of completed alignment. Subsequently, drive the screw rod 21 to rotate reversely through the servo motor 24. When the screw rod 21 rotates reversely, the rotating disk 22 moves downward through the cooperation of the rotating plate 44 and the limiting plate 47, so that the first alignment plate 33 and the second alignment plate 34 retract into the movable cavity 101. Then stop the servo motor 24, start the cylinder 3, and the cylinder 3 drives the pressing plate 4 to press the liquid crystal display module 15 and the cover glass 14. After the pressing is completed, start the first electric guide rail 10 to push the pressed liquid crystal display module 15 and cover glass 14 to the position of the dial indicator 7. Check whether the pressing alignment is qualified through the dial indicator 7. Then start the servo motor 24 to rotate reversely. The rotating disk 22 moves down to the lower end of the thread groove of the screw rod 21, and the rotating plate 44 moves to the second avoidance groove 49. Rotate the screw rod 21 by a certain angle through the servo motor 24, so that the first alignment plate 33, the second alignment plate 34 and the lifting column 39 return to the initial position.

[0041] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fully automatic assembly device for an in-vehicle display screen, comprising an assembly table (1) and a pressing mechanism arranged thereon, characterized in that, Four straight grooves (25) are formed in the assembly table (1). A rotating disk (22) is rotatably arranged in the assembly table (1). Four arc grooves (26) are formed in the rotating disk (22). A slide rod (28) is slidably arranged in each straight groove (25). A follower block (27) is fixedly arranged at one end of each slide rod (28) close to the rotating disk (22). Each follower block (27) is movably arranged in each arc groove (26) in a one-to-one correspondence. The alignment mechanism includes a cross plate (31) fixedly arranged at the top of each slide rod (28). A first alignment plate (33) is slidably arranged on each cross plate (31). A second alignment plate (34) is fixedly arranged on each first alignment plate (33). The driving mechanism includes a screw rod (21) rotatably arranged in the assembly table (1). The screw rod (21) is in threaded connection with the rotating disk (22). The measuring mechanism includes a fixing plate (5) fixedly arranged on one side of the assembly table (1). A dial indicator (7) is fixedly arranged at one end of the fixing plate (5) away from the assembly table (1). Four lifting columns (39) are arranged on the assembly table (1). A ball (392) is arranged at the top end of each lifting column (39). Four tooth columns (36) are rotatably arranged in the assembly table (1). A resisting ball (37) is fixedly arranged in each tooth column (36). A spiral groove (391) adapted to the resisting ball (37) is formed on the outer peripheral surface of each lifting column (39). A cross rod (38) is slidably arranged on each lifting column (39). Tooth plates (32) adapted to the tooth columns (36) are fixedly arranged at both ends of two of the cross plates (31). Two springs (35) are fixedly arranged between each first alignment plate (33) and each cross plate (31). A first torsion spring (41) is fixedly arranged between each tooth column (36) and the assembly table (1).

2. The fully automatic assembly device for vehicle-mounted display screens according to claim 1, wherein, The pressing mechanism includes a support frame (2) fixedly arranged on the assembly table (1). A cylinder (3) is fixedly arranged on the support frame (2). A pressing plate (4) is fixedly arranged at the bottom of the cylinder (3).

3. The fully automatic assembly device for vehicle-mounted display screens according to claim 2, wherein, An arc plate (42) is fixedly arranged on the outer peripheral surface of the rotating disk (22). Fixed frames (43) are fixedly arranged on both sides of the arc plate (42). A rotating plate (44) is rotatably arranged in each fixed frame (43). A second torsion spring (46) is fixedly arranged between each rotating plate (44) and each fixed frame (43) in a one-to-one correspondence. A limiting plate (47) is fixedly arranged in the assembly table (1).

4. The fully automatic assembly device for a vehicle-mounted display screen according to claim 3, wherein, Two abutting blocks (45) are fixedly arranged on the arc plate (42). A first avoidance groove (48) and a second avoidance groove (49) are formed in the limiting plate (47).

5. The fully automatic assembling device for in-vehicle display screens according to claim 4, wherein, Grooves (102) are formed in both the assembly table (1) and the fixing plate (5). The grooves (102) on the assembly table (1) are communicated with the grooves (102) on the fixing plate (5) in a one-to-one correspondence. A first electric guide rail (10) and a second electric guide rail (12) are fixedly arranged on the assembly table (1). A positioning reference block (6) is fixedly arranged on the fixing plate (5).

6. The fully automatic assembling device for vehicle-mounted display screens according to claim 5, characterized in that, A plurality of rubber-coated rollers (9) are rotatably arranged on the fixed plate (5).

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