Automatic turnover equipment for liquid crystal display screen processing

Abstract

The invention discloses automatic turnover equipment for liquid crystal display screen processing, which relates to the technical field of liquid crystal display screen processing and comprises a supporting seat, a driving mechanism positioned at the center of the supporting seat, a fixed disc positioned on the driving mechanism and a liquid crystal display screen body, the turnover boxes are symmetrically arranged above the supporting base and used for containing the liquid crystal display screen body, and the automatic turnover mechanism is arranged at the top of the fixing disc and is opposite to the turnover boxes so as to conduct non-clamping turnover on the liquid crystal display screen body. The guide frame is arranged at the top of the supporting base and used for being matched with the automatic turnover mechanism to enable the liquid crystal display screen body to rotate and then move out of the turnover box, the supporting mechanism is arranged at the top of the supporting base and used for limiting the turnover box, and the conveying mechanisms are arranged on the two sides of the supporting base and used for conveying the liquid crystal display screen body. When the liquid crystal display screens are processed and conveyed, the placing directions of the liquid crystal display screens can be automatically distinguished, the liquid crystal display screens with the upward front faces are normally conveyed, and the liquid crystal display screens with the upward back faces are turned over in a non-clamping mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid crystal display processing, in particular to an automatic overturning device for liquid crystal display processing. BACKGROUND

[0002] Liquid crystal display production involves multiple links and complex processes, usually including glass substrate processing, thin film transistor array manufacturing, color filter manufacturing, liquid crystal injection and packaging, module assembly, detection and inspection, etc. During the production process, the liquid crystal display needs to go through a complete production chain, and after going through each processing line, the front and back positions of the liquid crystal display cannot be determined, and often need to be turned over several times.

[0003] Liquid crystal displays are processed in automatic production lines, and during the process, the display needs to be turned over several times. Usually, a mechanical arm is used to hold the display and then turn it over. Since the screen part of the display cannot be stressed, the mechanical arm can only hold the frame of the display. In order to meet the needs of the public, the display is becoming more and more towards small frame and frameless development, and the frame of the display is becoming narrower and narrower. Therefore, the clamping area of the mechanical arm is becoming smaller and smaller, and the stress on the clamping point during the display turning is becoming more and more concentrated. Especially during the production process, the frame is often sealed with glue between the main screen, and the use of mechanical arm clamping and turning has disadvantages. On the one hand, the clamping force concentrated on the edge can easily cause the unhardened glue seal to open, and on the other hand, it can also easily cause the narrow frame surface to be pressed.

[0004] Obviously, the traditional mechanical arm clamping and turning transmission method has gradually failed to meet the current design concept and needs of frameless display. Therefore, the present application proposes a new liquid crystal display overturning transmission device to solve the problem that the current overturning mechanism cannot adapt to the current frameless design needs of the display. At the same time, the special designed overturning mechanism can realize the flexible overturning and protection of the display. SUMMARY

[0005] The technical solution of the present application provides a significantly different solution from the prior art to solve the technical problem that the prior art solution is too single. Specifically, the purpose of the present application is to provide an automatic overturning device for liquid crystal display processing to solve the problem that the frameless design of the existing liquid crystal display is not convenient for use with mechanical arm clamping and turning.

[0006] In order to achieve the above object, the present application provides the following technical scheme: an automatic overturning device for processing liquid crystal display screens, comprising a supporting seat, a driving mechanism located at the center of the supporting seat, a fixing disc located on the driving mechanism, and a liquid crystal display screen body, further comprising an overturning box symmetrically arranged above the supporting seat for placing the liquid crystal display screen body, an automatic overturning mechanism arranged on the top of the fixing disc and opposite to the overturning box for non-clamping overturning the liquid crystal display screen body, a guide frame arranged on the top of the supporting seat for cooperating with the automatic overturning mechanism to make the liquid crystal display screen body rotate and move out of the overturning box, a supporting mechanism arranged on the top of the supporting seat for limiting the overturning box, and a conveying mechanism arranged on both sides of the supporting seat for conveying the liquid crystal display screen body. The end of the overturning box away from the supporting seat is provided with an opening structure expanding to both sides.

[0007] Preferably, the driving mechanism comprises a servo motor fixedly installed at the center of the bottom of the supporting seat, the output end of the servo motor is fixed with a rotating column penetrating through the top of the supporting seat, and the fixing disc is fixedly arranged on the outer wall of the rotating column.

[0008] Preferably, the inner wall of the overturning box in the vertical direction is symmetrically provided with rotating rollers at equal intervals, and the liquid crystal display screen body is located between the rotating rollers in the vertical direction.

[0009] Preferably, the automatic overturning mechanism comprises a limiting rod fixed on the top of the fixing disc, the top of the fixing disc is fixed with a first spring located outside the limiting rod, the top of the first spring is fixed with a moving plate in sliding cooperation with the limiting rod, the outer wall of the moving plate is rotatably connected with a rotating shaft through a bearing, the end of the rotating shaft is fixed with the outer wall of the corresponding overturning box, a transmission assembly is arranged between the outer wall of the rotating shaft and the top of the fixing disc, and the outer side of the rotating shaft is provided with a movable inner plate, a positioning assembly is arranged between the overturning box and the inner plate, and the outer wall of the inner plate is provided with a moving-out assembly cooperating with the guide frame.

[0010] Preferably, the transmission assembly comprises a gear fixed on the outer wall of the rotating shaft and close to the moving plate, and the top of the fixing disc is fixed with a rack meshing with the gear.

[0011] Preferably, the positioning assembly comprises an insertion rod in sliding cooperation with the overturning box and symmetrically arranged, the end of the insertion rod is fixed with a pressing block located at the upper end inside the overturning box, and the second spring is fixed between the pressing block and the inner wall of the overturning box and located outside the insertion rod.

[0012] Preferably, the moving-out assembly comprises an outer ring sleeved on the outer wall of the inner plate, a rolling ball is arranged between the outer ring and the inner plate to form a rotating connection, the outer wall of the inner plate is symmetrically fixed with a push rod slidingly matched with the turnover box, the end of the push rod is fixed with a push plate located in the inner side of the turnover box, a third spring is fixed between the inner plate and the turnover box and sleeved on the outer side of the push rod, the bottom of the outer ring is fixed with an elastic telescopic rod, the telescopic end of the elastic telescopic rod is located in the inner side of the guide frame, and the outer wall of the outer ring is symmetrically provided with a plug hole matched with the plug rod.

[0013] Preferably, the telescopic end of the elastic telescopic rod is rotatably connected with a rotating disc abutting the inner wall of the guide frame.

[0014] Preferably, the supporting mechanism comprises a first supporting plate arranged on one side of the top of the supporting base, a second supporting plate is fixed on the other side of the supporting base, the second supporting plate is arranged in an arc-shaped structure, the upper end of the outer wall of the second supporting plate is fixed with a bottom plate, the outer wall of the second supporting plate is provided with a notch, and the notch is provided with an inclined guide plate.

[0015] Preferably, the conveying mechanism comprises a first conveying mechanism arranged on one side of the supporting base, a second conveying mechanism is arranged on the other side of the supporting base, and a third conveying mechanism is arranged on the top of the second conveying mechanism in an inclined manner.

[0016] Compared with the prior art, the present application has the following advantages: 1. In the present application, when the first conveying mechanism conveys the liquid crystal display screen body, the servo motor indirectly rotates, and the rotation angle is 180° each time, so that each group of turnover boxes can be rotated to the starting point and correspond to the first conveying mechanism. The first conveying mechanism can convey the liquid crystal display screen body into the turnover box. If the back of the liquid crystal display screen body is upward, the liquid crystal display screen body entering the turnover box can be flipped without clamping during the rotation of the turnover box. At the same time, the flipped liquid crystal display screen body can be automatically pushed out to the second conveying mechanism for conveying, thereby solving the problem that the current turnover mechanism cannot adapt to the current display screen frameless design requirement. 2. In the present application, if the front of the liquid crystal display screen body is upward and enters the turnover box, the screen edge of the liquid crystal display screen body extrudes the pressing block. The pressing block pushes the plug rod into the corresponding plug hole of the outer ring while extruding the second spring. Because the plug rod is inserted into the plug hole and the bottom surface of the rotating disc at the bottom of the elastic telescopic rod abuts the top surface of the supporting base, the turnover box will not be flipped during one rotation. At the same time, the liquid crystal display screen body will be pushed out to the third conveying mechanism for conveying when rotating 180°. Finally, the liquid crystal display screen body will be conveyed to the second conveying mechanism for conveying, thereby automatically distinguishing whether the liquid crystal display screen needs to be flipped when conveying the liquid crystal display screen. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a first perspective view of the present application; Figure 2 is a second perspective view of the present application; Figure 3 is a perspective view of the liquid crystal display screen body before being flipped over with the back face upward; Figure 4 is a perspective view of the local parts of the liquid crystal display screen body before being flipped over with the back face upward; Figure 5 is a top plan view of the liquid crystal display screen body before being flipped over with the back face upward; Figure 6 is a perspective view of the liquid crystal display screen body after being flipped over with the back face upward; Figure 7 is a top plan view of the liquid crystal display screen body after being flipped over with the back face upward; Figure 8 is a perspective view of the liquid crystal display screen body before being rotated and moved out with the front face upward; Figure 9 is a top plan view of the liquid crystal display screen body before being rotated and moved out with the front face upward; Figure 10 is a perspective view of the liquid crystal display screen body after being rotated and moved out with the front face upward.

[0018] In the figure: 1, support seat; 2, servo motor; 3, rotating column; 4, fixed disc; 5, limiting rod; 6, first spring; 7, moving plate; 8, rotating shaft; 9, flipping box; 10, rotating roller; 11, liquid crystal display screen body; 12, gear; 1201, rack; 13, inner plate; 14, outer ring; 15, insertion rod; 16, pressing block; 17, second spring; 18, push rod; 19, push plate; 20, third spring; 21, elastic telescopic rod; 22, guide frame; 23, first support plate; 24, second support plate; 25, bottom plate; 26, first transmission mechanism; 27, second transmission mechanism; 28, third transmission mechanism. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Please refer to Figures 1 to 10The application provides a technical scheme: an automatic overturning device for liquid crystal display screen processing, which comprises a supporting seat 1, a driving mechanism located at the center of the supporting seat 1, a fixed disc 4 located on the driving mechanism and a liquid crystal display screen body 11, further comprises an overturning box 9 symmetrically arranged above the supporting seat 1 and used for placing the liquid crystal display screen body 11, an automatic overturning mechanism arranged on the top of the fixed disc 4 and used for overturning the liquid crystal display screen body 11 without clamping, a guide frame 22 arranged on the top of the supporting seat 1 and used for cooperating with the automatic overturning mechanism to make the liquid crystal display screen body 11 rotate and then move out of the overturning box 9, a supporting mechanism arranged on the top of the supporting seat 1 and used for limiting the overturning box 9 and a conveying mechanism arranged on both sides of the supporting seat 1 and used for conveying the liquid crystal display screen body 11. The overturning box 9 is provided with an opening structure expanding to both sides away from the supporting seat 1.

[0021] The driving mechanism comprises a servo motor 2 fixedly installed at the center of the bottom of the supporting seat 1, the output end of the servo motor 2 is fixed with a rotating column 3 penetrating through the top of the supporting seat 1, and the fixed disc 4 is fixedly arranged on the outer wall of the rotating column 3.

[0022] In specific embodiments, the supporting seat 1 is a circular structure, the control servo motor 2 indirectly rotates clockwise, and each time rotates 180°, the servo motor 2 drives the rotating column 3 to rotate, and the rotating column 3 drives the fixed disc 4 on the outer wall to rotate.

[0023] The inner wall of the overturning box 9 in the vertical direction is symmetrically provided with rotating rollers 10 at equal intervals, and the liquid crystal display screen body 11 is located between the rotating rollers 10 in the vertical direction.

[0024] In specific embodiments, the inner walls of the upper and lower ends of the overturning box 9 are both provided with rotating rollers 10 at equal intervals, in order to reduce the sliding friction of the liquid crystal display screen body 11 when entering or moving out of the overturning box 9, meanwhile, the thickness of the liquid crystal display screen body 11 matches the interval between the upper and lower rotating rollers 10, and the gear of the liquid crystal display screen body 11 also matches the internal size of the overturning box 9, avoiding the collision of the liquid crystal display screen body 11 in the overturning box 9 when overturning.

[0025] The automatic overturning mechanism comprises a limiting rod 5 fixed on the top of the fixed disc 4, the top of the fixed disc 4 is fixed with a first spring 6 located outside the limiting rod 5, the top of the first spring 6 is fixed with a moving plate 7 in sliding cooperation with the limiting rod 5, the outer wall of the moving plate 7 is rotatably connected with a rotating shaft 8 through a bearing, the end of the rotating shaft 8 is fixed with the outer wall of the corresponding overturning box 9, a transmission assembly is arranged between the outer wall of the rotating shaft 8 and the top of the fixed disc 4, a movable inner plate 13 is arranged outside the rotating shaft 8, a positioning assembly is arranged between the overturning box 9 and the inner plate 13, and the outer wall of the inner plate 13 is provided with a moving-out assembly cooperating with the guide frame 22.

[0026] In the embodiment, the limiting rods 5 and the first springs 6 can be two groups in each set of automatic turnover mechanism, so as to improve the stability of the longitudinal sliding of the moving plate 7 on the limiting rod 5. The transmission assembly is used to drive the rotation of the rotating shaft 8 by 180° to turn over the turnover box 9 when the moving plate 7 is longitudinally slid. The positioning assembly cooperates with the inner plate 13, so as to determine whether the turnover of the turnover box 9 needs to be limited according to whether the front or back of the liquid crystal display body 11 in the turnover box 9 is upward. The moving-out assembly can push out the liquid crystal display body 11 in the turnover box 9 after the turnover box 9 is rotated by 180°.

[0027] The transmission assembly includes a gear 12 fixed to the outer wall of the rotating shaft 8 and close to the moving plate 7, and the top of the fixed disc 4 is fixed with a rack 1201 engaged with the gear 12.

[0028] In the embodiment, the rack 1201 is fixed to the top of the fixed disc 4, and the length of the rack 1201 is half of the circumference of the gear 12, so that the gear 12 is rotated by 180° when the lower end of the rack 1201 is longitudinally moved.

[0029] The positioning assembly includes plug rods 15 slidably cooperating with the turnover box 9 and symmetrically arranged. The end of the plug rod 15 is fixed with a pressing block 16 located at the upper end inside the turnover box 9. The second spring 17 is fixed between the pressing block 16 and the inner wall of the turnover box 9 and located outside the plug rod 15.

[0030] In the embodiment, it is known that the liquid crystal display body 11 can be divided into two layers from the side, one layer is a liquid crystal screen, and the other layer is a shell behind the liquid crystal screen, and the size of the shell is smaller than that of the liquid crystal screen, and the thickness is relatively thick because the control circuit of the display screen is integrated in the shell. The position of the pressing block 16 is at the upper end of the distance between the upper and lower two layers of rotating rollers 10. When the front of the liquid crystal display body 11 is upward, the edge of the liquid crystal screen will press the pressing block 16, and the pressing block 16 will drive the plug rod 15 to slide on the outer wall of the turnover box 9, so that the end of the plug rod 15 is inserted into the corresponding plug hole in the inner plate 13, thereby limiting the rotation of the turnover box 9. When the back of the liquid crystal display body 11 is upward, the edge of the liquid crystal screen will not press the pressing block 16, so the rotation of the turnover box 9 will not be limited.

[0031] The moving-out assembly comprises an outer ring 14 sleeved on the outer wall of the inner plate 13, the outer ring 14 and the inner plate 13 are connected through the rolling ball, the outer wall of the inner plate 13 is symmetrically fixed with the push rod 18 which is slidingly matched with the turnover box 9, the end of the push rod 18 is fixed with the push plate 19 which is located inside the turnover box 9, the third spring 20 is fixed between the inner plate 13 and the turnover box 9 and sleeved on the outer side of the push rod 18, the bottom of the outer ring 14 is fixed with the elastic telescopic rod 21, the telescopic end of the elastic telescopic rod 21 is located inside the guide frame 22, the outer wall of the outer ring 14 is symmetrically provided with the insertion hole which is matched with the insertion rod 15.

[0032] The telescopic end of the elastic telescopic rod 21 is rotationally connected with the rotating disc which is attached to the inner wall of the guide frame 22.

[0033] In the embodiment, the outer ring 14 and the inner ring 13 are connected through the rolling ball, which is the prior art and will not be explained in detail, the guide frame 22 is an irregular frame structure, in the process of rotating one circle from the initial position of the turnover box 9, in the range of 0° to 180°, the distance from the inner wall of the guide frame 22 to the center of the support base 1 is the same, the rotating disc at the bottom of the elastic telescopic rod 21 is attached to the inner wall of the guide frame 22, thereby limiting the elastic telescopic rod 21, in this state, the inner plate 13 pulls the push rod 18 to make the push plate 19 attached to the inner wall of the turnover box 9, and the third spring 20 is in the stretched state, in the range of 180° to 185°, the inner wall of the guide frame 22 is protruded, which can release the limitation of the elastic telescopic rod 21, under the elastic reset action of the third spring 20, the inner plate 13, the outer ring 14 and the elastic telescopic rod 21 are all moved without contact outside the rotating shaft 8, the push plate 19 is moved to the opening of the turnover box 9 by the push rod 18, thereby the liquid crystal display body 11 inside can be pushed out, under the action of the transmission roller 10, the reset elastic force of the third spring 20 is enough to push out the liquid crystal display body 11, and the protruded distance of the inner wall of the guide frame 22 is enough to make the push plate 19 move to the opening of the turnover box 9, since the insertion hole on the outer ring 14 is longitudinally symmetrical, whether the turnover box 9 is turned over or not, the outer ring 14 will be inserted and slid through the insertion hole and the insertion rod 15, thereby not blocking the movement of the outer ring 14, in the range of 185° to 270°, the distance from the inner wall of the guide frame 22 to the center of the support base 1 is gradually shortened and the same as the initial distance, the rotating disc can guide the elastic telescopic rod 21, so that the inner plate 13, the outer ring 14 and the elastic telescopic rod 21 return to the initial state, the third spring 20 is stretched again, in the range of 270° to 360°, the distance from the inner wall of the guide frame 22 to the center of the support base 1 is the same as the initial distance.

[0034] It should be noted that the bottom of the elastic telescopic rod 21 can produce rolling friction when the elastic telescopic rod 21 rotates, thereby reducing the resistance, and the bottom of the rotating disc is attached to the top of the support base 1.

[0035] The support mechanism includes a first support plate 23 arranged on one side of the top of the support base 1, and a second support plate 24 fixed on the other side of the support base 1. The second support plate 24 is arranged in an arc shape, and the outer wall of the upper end of the second support plate 24 is fixed with a bottom plate 25. The outer wall of the second support plate 24 is provided with a notch, and the notch is provided with an inclined guide plate.

[0036] In specific embodiments, the height of the first support plate 23 is just enough to make its top surface located at the bottom surface of the turnover box 9 when the liquid crystal display screen body 11 does not enter the turnover box 9, and the first support plate 23 is in an arc shape and located within the rotation track of the turnover box 9. The second support plate 24 is also in an arc shape, but the position of the second support plate 24 is located outside the rotation track of the turnover box 9. The bottom plate 25 is located within the rotation track of the turnover box 9, and the top surface of the bottom plate 25 is at the same level as the top surface of the first support plate 23. The notch on the second support plate 24 corresponds to the opening of the turnover box 9 when it is rotated to this position, and the inclined guide plate supports the liquid crystal display screen body 11.

[0037] The conveying mechanism includes a first transmission mechanism 26 arranged on one side of the support base 1, and a second transmission mechanism 27 arranged on the other side of the support base 1. The top of the second transmission mechanism 27 is inclinedly provided with a third transmission mechanism 28.

[0038] In specific embodiments, the first transmission mechanism 26, the second transmission mechanism 27, and the third transmission mechanism 28 are all conventional existing technologies. The conveying height of the first transmission mechanism 26 is just enough to make the liquid crystal display screen body 11 conveyed by the transmission belt enter the inside of the turnover box 9. The conveying height of the second transmission mechanism 27 is located at the bottom of the inclined guide plate. The feeding end of the third transmission mechanism 28 is at the same height as the bottom plate 25, and the spacing between the discharging end of the third transmission mechanism 28 and the transmission belt of the second transmission mechanism 27 is greater than the thickness of the liquid crystal display screen body 11.

[0039] Working principle: In the last processing process of the liquid crystal display screen body 11, the liquid crystal display screen body 11 is placed at equal intervals on the first transmission mechanism 26 to be conveyed to the turnover box 9 on one side. However, when the screen of the liquid crystal display screen body 11 needs to be processed subsequently, the liquid crystal screen of the liquid crystal display screen body 11 may be facing up after the last processing process, or the rear shell of the liquid crystal display screen body 11 may be facing up. At this time, the liquid crystal display screen body 11 with the rear shell facing up needs to be turned over. The rotation interval of the servo motor 2 matches the placement interval of the liquid crystal display screen body 11 on the first transmission mechanism 26.

[0040] As Figures 3 to 7 shown, when the LCD body 11 is transported upside down to the turnover box 9, the rear shell of the LCD body 11 fails to press the pressing block 16, and when the LCD body 11 starts to enter the turnover box 9, the turnover box 9 is supported and limited by the first support plate 23 at the bottom, at this time, the servo motor 2 drives the rotating column 3 to rotate 180°, after the turnover box 9 moves away from the top of the first support plate 23, the weight of the LCD body 11 entering the turnover box 9 increases, so that the moving plate 7 slides downward on the outer wall of the limiting rod 5 and presses the first spring 6, at the same time, the gear 12 on the outer wall of the rotating shaft 8 moves downward synchronously, when the gear 12 moves downward, it meshes with the rack 1201 to rotate, so that the gear 12 is blocked by the fixed disc 4 when it moves to the lowest end of the rack 1201, in this process, the gear 12 rotates 180°, the rotating shaft 8 and the turnover box 9 at the end thereof rotate 180° synchronously, the push rod 18 also rotates in the outer ring 14 synchronously with the inner plate 13, and the elastic telescopic rod 21 is also adaptively compressed, so that the LCD body 11 in the turnover box 9 is turned over to have the screen upward, after rotating 180°, the elastic telescopic rod 21 at the bottom of the outer ring 14 also rotates to the relative position with the fixed disc 4, at this time, the rotating disc at the bottom of the elastic telescopic rod 21 rolls to the protruding position on the inner side wall of the guide frame 22, the turnover box 9 rotates to correspond to the notch on the second support plate 24, the guide frame 22 releases the limitation of the rotating disc at the bottom of the elastic telescopic rod 21, the third spring 20 in the initial state is reset to move the inner plate 13, the outer ring 14 and the elastic telescopic rod 21, the inner plate 13 drives the push plate 19 to move to the opening of the turnover box 9 through the push rod 18, the push plate 19 pushes the LCD body 11 out of the turnover box 9 and moves to the second transmission mechanism through the notch and the inclined guide plate for continuous conveying, at the same time, the insertion rod 15 which rotates 180° with the turnover of the turnover box 9 can still correspond to the insertion hole on the outer ring 14, so that the outer ring 14 slides on the insertion rod 15 when it moves with the inner plate 13.

[0041] In the process of the servo motor 2 rotating the next 180°, under the limiting and guiding action of the guide frame 22 on the rotating disc, the inner plate 13, the outer ring 14 and the elastic telescopic rod 21 move to the initial state, the third spring 20 is stretched again, after the insertion hole on the outer ring 14 moves out of the insertion rod 15, because the LCD body 11 in the turnover box 9 has been moved out, the first spring 6 starts to deform and reset to push the moving plate 7 to move upward, under the action of the gear 12 and the rack 1201, the turnover box 9 is turned over and moves upward to the initial state, the turnover box 9 will move to the top of the first support plate 23 again.

[0042] As Figures 8 to 10As shown, when the liquid crystal display screen body 11 is transported with the front face upward to the turnover box 9, the screen edge of the liquid crystal display screen body 11 presses the pressing block 16, the pressing block 16 pushes the insertion rod 15 to insert into the corresponding insertion hole of the outer ring 14 while pressing the second spring 17. In the same way, the above rotating process, because the insertion rod 15 is inserted into the insertion hole and the bottom surface of the rotating disc of the elastic expansion rod 21 is attached to the top surface of the support seat 1, the turnover box 9 will not be turned over after rotating 180°, but will be rotated to the top surface of the bottom plate 25. The guiding of the elastic expansion rod 21 of the guide frame 22 still exists, and the same as the above process, the push plate 19 pushes the liquid crystal display screen body 11 out to the third transmission mechanism 28 for transportation, and finally to the second transmission mechanism 27 for transportation. In the process of moving the liquid crystal display screen body 11, the pressing of the pressing block 16 is released, and the turnover box 9 can be blocked by the bottom plate 25 to prevent the turnover box 9 from descending when the liquid crystal display screen body 11 moves but is still in the turnover box 9.

[0043] In summary, each group of turnover boxes 9 can non-clampingly turn over the liquid crystal display screen body 11 with the back face upward and then reset to the initial position in the process of rotating one circle.

[0044] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic flipping device for processing liquid crystal displays, characterized in that, include: The support base has a drive mechanism and symmetrically distributed tilting boxes on its top. The drive mechanism, including a servo motor, a rotating column, and a fixed plate, is used to drive the tilting box to rotate periodically. An automatic flipping mechanism, located on the top of the fixed plate, includes a limiting component, a transmission component, and a moving component, which can selectively trigger the flipping action according to the placement orientation of the LCD screen; The guide frame, in conjunction with the automatic flipping mechanism, guides the flipped LCD screen to move out. The support mechanism includes arc-shaped support plates on both sides and a base plate, which are used for support and guidance during the flipping process; The conveying mechanism includes three sets of conveyor belts to realize the directional conveying of LCD screens; The inner wall of the flipping box is equipped with a rotating roller, the automatic flipping mechanism achieves 180° flipping through gear and rack meshing, and the removal component completes non-clamping ejection through the linkage of the elastic telescopic rod and the guide frame.

2. The automatic flipping equipment for processing liquid crystal displays according to claim 1, characterized in that: In the drive mechanism, the output end of the servo motor is connected to the rotating column, and at least two sets of tilting boxes are evenly distributed around the fixed disk. The rotating column drives the fixed disk to rotate intermittently by 180°. The flipping box is equipped with multiple rotating rollers, the axis of which is perpendicular to the conveying direction of the liquid crystal display screen, and the spacing between the rotating rollers is adapted to the thickness of the display screen.

3. The automatic flipping equipment for processing liquid crystal displays according to claim 2, characterized in that: The automatic flipping mechanism includes: The limiting rod and the sleeved first spring limit the vertical displacement of the moving plate; The movable plate is connected to the rotating shaft via a bearing, and the end of the rotating shaft is fixedly connected to the tilting box. The gear meshes with the rack on top of the fixed disk, converting vertical movement into 180° rotation of the shaft; The inner plate is connected to the push plate via a push rod, and the outer ring dynamically cooperates with the guide frame via an elastic telescopic rod.

4. The automatic flipping equipment for processing liquid crystal displays according to claim 3, characterized in that: The transmission assembly includes a gear fixed to the rotating shaft and a rack meshing with it, the length of which is 1 / 2 of the circumference of the gear; The positioning component includes symmetrical insert rods and pressure blocks. When the pressure blocks are pressed by the edge of the LCD screen, they push the insert rods to lock the inner plate. The removal assembly includes an outer ring, a push rod, a push plate, and a third spring. A turntable is provided at the bottom of the outer ring to make rolling contact with the guide frame.

5. The automatic flipping equipment for processing liquid crystal displays according to claim 4, characterized in that: The insertion rod is provided with a pressure block at its end, and a second spring is provided between the pressure block and the inner wall of the flip box. The stroke of the insertion rod is controlled by the edge position of the LCD screen. The bottom of the elastic telescopic rod is provided with a turntable, and the bottom surface of the turntable rolls and rubs against the top surface of the guide frame. The inner side wall of the guide frame is provided with a stepped limiting area.

6. The automatic flipping equipment for processing liquid crystal displays according to claim 1, characterized in that: The supporting structure includes: The first support plate is located below the initial position of the tilting box, with its top surface flush with the bottom surface of the tilting box; The second support plate has an arc-shaped structure, and its slot matches the flipping path of the flipping box. An inclined guide plate is provided at the slot to connect the conveying mechanism.

7. The automatic flipping equipment for processing liquid crystal displays according to claim 1, characterized in that: The conveying mechanism includes: The first transmission mechanism docks with the inlet of the tilting box; The second transmission mechanism is located below the tipping point of the tilting box; The third transmission mechanism is tilted above the second transmission mechanism, forming a transfer channel for the LCD screen.

8. An automatic flipping device for processing liquid crystal displays according to any one of claims 1-7, characterized in that: The opening end of the flip box is provided with a flared structure, and the inner sidewall of the guide frame is provided with an elastic buffer layer. The servo motor is equipped with an encoder to control the rotation accuracy, and the surface of the rotating roller is covered with a rubber anti-slip layer.

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