Turnover device for LCD liquid crystal display screen production

Abstract

The invention relates to the technical field of liquid crystal display screen production, in particular to a turnover device for LCD liquid crystal display screen production. Comprising a workbench, a placing plate is arranged above the workbench, two side plates are fixedly connected to the upper side of the placing plate, a fixing device, an auxiliary device and a cleaning device are arranged above the side plates, and three sets of limiting plates are arranged above the placing plate. The limiting plate which is not pressed can limit the periphery of the display screen, an electric telescopic rod is started in a matched mode to drive a pressing plate to move downwards to press the display screen, display screens of different models can be fixed, a cylindrical rod drives a piston to move downwards, the piston moves downwards to enable a suction cup to suck the bottom end of the display screen, and therefore the display screen can be fixed. And meanwhile, under the action of the pneumatic shrinkage pipe, a downward pulling force is applied to the bottom end of the display screen, so that the stability of the display screen is further improved.

Description

Technical Field

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

[0002] With the development of information technology and industry, various types of liquid crystal display screens are widely used in family life. The integrity of LCD display screen modules is getting stronger and stronger. The production quality of LCD display screen modules is directly related to the clarity and sensitivity of screen viewing. In the same production process of display screens of different specifications, the photoelectric glass needs to be flipped by a flipping device during production, so that the photoelectric glass can be better processed.

[0003] When the existing display screen is flipped, most of them are clamped by clamping members on both sides. Since the screen of the display screen is made of glass, if the force is not properly controlled during the clamping process, the edge of the display screen may be crushed or the screen may be damaged. Especially when flipping, the force on the edge is uneven, and it is easy for the display screen to fall off the clamping members and be damaged due to the display screen not being clamped firmly, thereby reducing the production efficiency of the display screen. Summary of the invention

[0004] The object of the present invention is to provide a flipping device for producing LCD liquid crystal display screens to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, a flipping device for LCD liquid crystal display screen production is provided, comprising a workbench, a placing plate is arranged above the workbench, two side plates are fixedly connected to the upper side of the placing plate, a fixing device, an auxiliary device and a cleaning device are arranged above the side plate, three groups of limiting plates are arranged above the placing plate, a plurality of the three groups of limiting plates are arranged, and the three groups of limiting plates are used to place the display screen; The display screen is placed on the limiting plate, and the fixing device works in conjunction with the limiting plate to fix display screens of different models; When the fixing device is working, the auxiliary device drives the auxiliary device to work. The auxiliary device generates negative pressure to further fix the display screen on the limit plate. At the same time, when the auxiliary device is working, it cooperates with the cleaning device to make the cleaning device blow away the dust on the display screen. The display screen drives the limit plate to move downward under its own gravity and squeezes the tension spring. The reaction force of the tension spring reduces the speed of the display screen moving downward. At the same time, the limit plate that is not pressed limits the four sides of the display screen.

[0006] As a further improvement of the present technical solution, three groups of mounting blocks are fixedly connected inside the placement plate, the upper sides of the three groups of mounting blocks are connected to the inner top wall of the placement plate, the limiting plate is slidably connected to the upper side of the placement plate, the lower end of the limiting plate is fixedly connected to the inner bottom wall of the mounting block with a tension spring, and the display screen is placed on the limiting plate.

[0007] As a further improvement of the technical solution, the fixing device includes a support plate fixedly connected between two side plates, the upper side of the support plate is fixedly connected with an electric telescopic rod, the lower end of the electric telescopic rod is fixedly connected with a fixing plate, the lower side of the fixing plate is fixedly connected with a pressing plate, and the lower side of the pressing plate is provided with an anti-slip pad. Starting the electric telescopic rod drives the fixing plate to move downward, and the downward movement of the fixing plate drives the pressing plate to move downward, so that the pressing plate fits the display screen to fix it.

[0008] As a further improvement of the present technical solution, the auxiliary device includes a plurality of mounting tubes fixedly connected to the inside of the placement plate, an air pipe being fixedly connected to one side of the upper end of the mounting tube, a pneumatic telescopic tube being fixedly connected to the other end of the air pipe, the pneumatic telescopic tube being fixedly connected to the upper side of the placement plate, and a plurality of pneumatic telescopic tubes being arranged between adjacent limit plates, a suction cup being fixedly connected to one end of the pneumatic telescopic tube away from the air pipe, and air being supplied to the inside of the pneumatic telescopic tube through the air pipe, so that the suction cup adsorbs the bottom end of the display screen.

[0009] As a further improvement of the present technical solution, the upper end of the mounting cylinder is connected to the inner top wall of the placement plate, a piston is slidably connected to the inside of the mounting cylinder, the upper end of the piston is fixedly connected to a cylindrical rod, and the upper end of the cylindrical rod passes through the upper side of the placement plate, and the lower end of the cylindrical rod is fixedly connected to the inner bottom wall of the mounting cylinder with a compression spring. When the cylindrical rod moves downward, the cylindrical rod drives the piston downward, and the air pressure at the upper end of the piston decreases, which is used to supply air to the inside of the air pipe. At the same time, the piston continues to move downward, causing the pneumatic telescopic tube to contract, thereby exerting a downward pulling force on the bottom end of the display screen.

[0010] As a further improvement of the technical solution, connecting plates are fixedly connected to both ends of the fixing plate, and the length between the two connecting plates and the fixing plate is greater than the distance between the two cylindrical rods.

[0011] As a further improvement of the technical solution, the cleaning device includes a plurality of cylinders fixedly connected to the lower side of the connecting plate, the interior of the cylinder is slidably connected to the upper end of the cylindrical rod, the upper end of the cylinder is fixedly connected to a blowing pipe, and the blowing pipe extends to the interior of the pressing plate, when the connecting plate moves downward, the upper end of the fixed plate moves upward inside the cylinder, transporting gas to the interior of the blowing pipe, so that the gas blows toward the display screen.

[0012] As a further improvement of the technical solution, a movable plate is fixedly connected to one side of the two connecting plates, and a slider is fixedly connected to the end of the movable plate away from the connecting plate, and the slider is slidably connected to the inside of the side plate. When the connecting plate moves, it drives the movable plate to move, and the movable plate drives the slider to slide inside the side plate.

[0013] As a further improvement of the technical solution, a rotating shaft is fixedly connected to both sides of the side panel, and the outside of the rotating shaft is rotatably connected to both sides of the workbench. A motor is fixedly connected to one side of the workbench, and a belt is sleeved on the output end of the motor and one end of the rotating shaft. Starting the motor drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the display screen to flip.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the flip device for LCD display screen production, the display screen drives the limit plate to move downward under its own gravity, and the speed of the display screen moving downward is reduced under the reaction force of the tension spring, which plays a buffering role for the display screen. At the same time, the limit plate that is not pressed can limit the four sides of the display screen. The electric telescopic rod is started to drive the pressing plate to move downward to press the display screen, which can fix different models of display screens and improve the production efficiency of the display screen.

[0015] 2. In the flipping device for LCD display production, the cylindrical rod is driven downward by the pressing plate, and the cylindrical rod drives the piston downward. The piston moves downward so that the suction cup adsorbs the bottom of the display screen. At the same time, under the action of the pneumatic shrink tube, there is a downward pulling force on the bottom of the display screen, which prevents the display screen from falling due to gravity during subsequent flipping, further improves the stability of the display screen, and reduces unnecessary losses.

[0016] 3. In the flip device for producing LCD display screens, when the cylindrical rod moves downward, the upper end of the cylindrical rod moves upward inside the cylinder, and the cylindrical rod transports the gas inside the cylinder to the inside of the blow pipe, so that the gas is blown directly above the display screen to clean the dust on the display screen, thereby avoiding dust residue inside the display screen and extending the service life of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the rotating shaft of the present invention; Figure 3 It is a structural schematic diagram of the placement plate of the present invention; Figure 4 It is one of the cross-sectional schematic diagrams of the placement plate of the present invention; Figure 5 It is a structural schematic diagram of the connecting plate of the present invention; Figure 6 It is a schematic structural diagram of the cleaning device of the present invention; Figure 7 It is a structural schematic diagram of a cylindrical rod of the present invention; Figure 8 The second cross-sectional schematic diagram of the placement plate of the present invention; Fig. 9 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0018] The meaning of each number in the figure is: 1. Workbench; 11. Placement board; 12. Motor; 13. Rotating shaft; 14. Belt; 15. Side panel; 2. Fixing device; 21. Support plate; 22. Electric telescopic rod; 23. Fixing plate; 24. Connecting plate; 241. Moving plate; 242. Sliding block; 25. Pressing plate; 26. Mounting block; 27. Limiting plate; 28. Tension spring; 3. Auxiliary device; 31. Mounting tube; 32. Cylindrical rod; 33. Compression spring; 34. Air pipe; 35. Pneumatic telescopic tube; 36. Suction cup; 4. Cleaning device; 41. Cylinder; 42. Blowing pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] See also Figure 1 and Figure 2As shown, the purpose of this embodiment is to provide a flip device for LCD liquid crystal display screen production, including a workbench 1, a placement plate 11 is arranged above the workbench 1, two side plates 15 are fixedly connected to the upper side of the placement plate 11, a fixing device 2, an auxiliary device 3 and a cleaning device 4 are arranged above the side plate 15, and three groups of limit plates 27 are arranged above the placement plate 11, and the three groups of limit plates 27 are provided with a plurality of them, and the three groups of limit plates 27 are used to place the display screen; The display screen is placed on the limiting plate 27, and the fixing device 2 works in conjunction with the limiting plate 27 to fix display screens of different models, thereby improving the production efficiency of the display screen; When the fixing device 2 is working, it drives the auxiliary device 3 to work. The auxiliary device 3 generates negative pressure to further fix the display screen on the limiting plate 27, thereby preventing the display screen from falling due to gravity when it is subsequently flipped, further improving the stability of the display screen and reducing unnecessary losses; at the same time, when the auxiliary device 3 is working, it cooperates with the cleaning device 4, so that the cleaning device 4 blows away the dust on the display screen, cleans the dust on the display screen, avoids dust remaining inside the display screen, and extends the service life of the display screen.

[0022] See also Figure 3 and Figure 4 as well as Fig. 9 As shown, three groups of mounting blocks 26 are fixedly connected inside the placement plate 11, and the upper sides of the three groups of mounting blocks 26 are connected to the inner top wall of the placement plate 11. The limiting plate 27 is slidably connected to the upper side of the placement plate 11, and the lower end of the limiting plate 27 is fixedly connected to the inner bottom wall of the mounting block 26 with a tension spring 28. When using the device, the display screen is placed in the middle position of the limiting plate 27. The display screen drives the limiting plate 27 to move downward under its own gravity and squeezes the tension spring 28. The reaction force of the tension spring 28 reduces the speed of the display screen moving downward, which plays a buffering role on the display screen and prevents damage to the display screen. At the same time, the limiting plate 27 that is not pressed can limit the surrounding areas of the display screen. See also Figure 5 As shown, the fixing device 2 includes a supporting plate 21 fixedly connected between the two side plates 15, an electric telescopic rod 22 is fixedly connected to the upper side of the supporting plate 21, a fixing plate 23 is fixedly connected to the lower end of the electric telescopic rod 22, a pressing plate 25 is fixedly connected to the lower side of the fixing plate 23, and an anti-slip pad is arranged on the lower side of the pressing plate 25. When the electric telescopic rod 22 is started, the fixing plate 23 is driven to move downward, and the downward movement of the fixing plate 23 drives the pressing plate 25 to move downward, so that the pressing plate 25 fits the display screen to fix it. Since the pressing plate 25 is arranged in the middle position, it can fix display screens of different models in cooperation with the limiting plate 27, thereby improving the production efficiency of the display screen.

[0023] See also Figure 4As shown, both ends of the fixed plate 23 are fixedly connected with connecting plates 24, one side of the two connecting plates 24 is fixedly connected with a movable plate 241, and the end of the movable plate 241 away from the connecting plate 24 is fixedly connected with a slider 242, and the slider 242 is slidably connected to the inside of the side plate 15. When the connecting plate 24 moves, it drives the movable plate 241 to move, and the movable plate 241 drives the slider 242 to slide inside the side plate 15, so that the stability of the connecting plate 24 is better when it moves.

[0024] See also Figure 7 and Figure 8 As shown, the auxiliary device 3 includes a plurality of mounting cylinders 31 fixedly connected to the inside of the placement plate 11, an air pipe 34 is fixedly connected to one side of the upper end of the mounting cylinder 31, the upper end of the mounting cylinder 31 is communicated with the inner top wall of the placement plate 11, a piston is slidably connected to the inside of the mounting cylinder 31, the upper end of the piston is fixedly connected to a cylindrical rod 32, and the upper end of the cylindrical rod 32 passes through the upper side of the placement plate 11, the lower end of the cylindrical rod 32 is fixedly connected to the inner bottom wall of the mounting cylinder 31 with a compression spring 33, the length between the two connecting plates 24 and the fixed plate 23 is greater than the distance between the two cylindrical rods 32, when the fixed plate 23 moves downward, it drives the connecting plate 24 to move downward, the connecting plate 24 moves downward and drives the cylindrical rod 32 to move downward, when the cylindrical rod 32 moves downward, the cylindrical rod 32 drives the piston to move in the mounting cylinder 31. The inside of the cylinder 31 moves downward, and the air pressure at the upper end of the piston is reduced, which is used to supply air to the inside of the air pipe 34. The other end of the air pipe 34 is fixedly connected to a pneumatic telescopic tube 35, and the pneumatic telescopic tube 35 is fixedly connected to the upper side of the placement plate 11, and multiple pneumatic telescopic tubes 35 are arranged between adjacent limit plates 27. The end of the pneumatic telescopic tube 35 away from the air pipe 34 is fixedly connected to a suction cup 36, and air is supplied to the inside of the pneumatic telescopic tube 35 through the air pipe 34, so that the suction cup 36 adsorbs the bottom end of the display screen. At the same time, when the piston continues to move downward, the pneumatic telescopic tube 35 is contracted to have a downward pulling force on the bottom end of the display screen, thereby preventing the display screen from falling due to gravity during subsequent flipping, further improving the stability of the display screen, and reducing unnecessary losses.

[0025] See also Figure 6 As shown, the cleaning device 4 includes a plurality of cylinders 41 fixedly connected to the lower side of the connecting plate 24, the interior of the cylinder 41 is slidably connected to the upper end of the cylindrical rod 32, the upper end of the cylinder 41 is fixedly connected to a blowing pipe 42, and the blowing pipe 42 extends to the inside of the pressing plate 25. When the connecting plate 24 moves downward, since the upper end of the cylindrical rod 32 moves upward inside the cylinder 41, the cylindrical rod 32 transports the gas inside the cylinder 41 to the inside of the blowing pipe 42, so that the gas is blown directly above the display screen to clean the dust on the display screen; When the display screen needs to be removed, the electric telescopic rod 22 is started to drive the fixing plate 23 and the connecting plate 24 to move upward. When the connecting plate 24 moves upward, the reaction force of the compression spring 33 drives the piston to move upward. At this time, the air pressure at the upper end of the piston increases, so that the suction cup 36 does not adsorb the bottom end of the display screen. This operation facilitates the removal of the display screen. At the same time, when the cylindrical rod 32 moves upward, the upper end of the cylindrical rod 32 moves downward inside the cylinder 41, and the external air is sucked into the inside of the cylinder 41 from the blowing pipe 42, which is convenient for the operation of the next display screen.

[0026] See also Figure 2 As shown, a rotating shaft 13 is fixedly connected to both sides of the side panel 15, and the outside of the rotating shaft 13 is rotatably connected to both sides of the workbench 1, a motor 12 is fixedly connected to one side of the workbench 1, and a belt 14 is sleeved on the output end of the motor 12 and one end of the rotating shaft 13. When the motor 12 is started, the rotating shaft 13 is driven to rotate through the belt 14, the rotating shaft 13 rotates to rotate the placement plate 11, and the placement plate 11 drives the display screen to flip.

[0027] When the flip device for producing LCD liquid crystal display screens of the present invention is used, the display screen is placed in the middle position of the limiting plate 27. The display screen drives the limiting plate 27 to move downward under its own gravity and squeezes the tension spring 28. The speed of the display screen moving downward is reduced under the reaction force of the tension spring 28, which plays a buffering role for the display screen and prevents the display screen from being damaged. At the same time, the limiting plate 27 that is not pressed can limit the surroundings of the display screen. The electric telescopic rod 22 is started to drive the fixing plate 23 to move downward. The fixing plate 23 moves downward and drives the pressing plate 25 to move downward, so that the pressing plate 25 fits the display screen to fix it. Since the pressing plate 25 is set in the middle position, it can fix different types of display screens in cooperation with the limiting plate 27, thereby improving the production efficiency of the display screen. When the fixing plate 23 moves downward, the connecting plate 24 is driven downward, and the connecting plate 24 is driven downward to drive the cylindrical rod 32 downward. When the cylindrical rod 32 moves downward, the cylindrical rod 32 drives the piston to move downward inside the mounting tube 31. At this time, the air pressure at the upper end of the piston is reduced, and air is supplied to the inside of the pneumatic telescopic tube 35 through the air pipe 34, so that the suction cup 36 adsorbs the bottom end of the display screen. At the same time, when the piston continues to move downward, the pneumatic telescopic tube 35 is contracted to exert a downward pulling force on the bottom end of the display screen, thereby preventing the display screen from falling due to gravity when it is subsequently turned over, further improving the stability of the display screen and reducing unnecessary losses. At the same time, when the connecting plate 24 moves downward, since the upper end of the cylindrical rod 32 moves upward inside the cylinder 41, the cylindrical rod 32 transports the gas inside the cylinder 41 to the inside of the blowing pipe 42, so that the gas is blown directly above the display screen to clean the dust on the display screen.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flipping device for producing LCD screens, comprising a workbench (1), characterized in that: A placement plate (11) is arranged above the workbench (1), two side plates (15) are fixedly connected to the upper side of the placement plate (11), a fixing device (2), an auxiliary device (3) and a cleaning device (4) are arranged above the side plates (15), and three groups of limit plates (27) are arranged above the placement plate (11), a plurality of the three groups of limit plates (27) are provided, and the three groups of limit plates (27) are used to place a display screen; The display screen is placed on the limiting plate (27), and the fixing device (2) works in conjunction with the limiting plate (27) to fix display screens of different models; When the fixing device (2) is in operation, it drives the auxiliary device (3) to work. When the auxiliary device (3) is in operation, it generates negative pressure to further fix the display screen on the limiting plate (27). At the same time, when the auxiliary device (3) is in operation, it cooperates with the cleaning device (4) so ​​that the cleaning device (4) blows away dust on the display screen. A tension spring (28) is fixedly connected to the lower end of the limiting plate (27) and the inner bottom wall of the mounting block (26). The display screen is placed on the limiting plate (27). The display screen drives the limiting plate (27) to move downward under its own gravity and compresses the tension spring (28). The speed at which the display screen moves downward is reduced under the reaction force of the tension spring (28). At the same time, the limiting plate (27) that is not pressed limits the surrounding areas of the display screen.

2. The LCD display screen production flipping device according to claim 1, characterized in that: Three groups of mounting blocks (26) are fixedly connected inside the placement plate (11), the upper sides of the three groups of mounting blocks (26) are connected to the inner top wall of the placement plate (11), and the limiting plate (27) is slidably connected to the upper side of the placement plate (11).

3. The LCD display screen production flipping device according to claim 1, characterized in that: The fixing device (2) comprises a support plate (21) fixedly connected between two side plates (15); an electric telescopic rod (22) is fixedly connected to the upper side of the support plate (21); a fixing plate (23) is fixedly connected to the lower end of the electric telescopic rod (22); a pressing plate (25) is fixedly connected to the lower side of the fixing plate (23); an anti-slip pad is provided on the lower side of the pressing plate (25); the electric telescopic rod (22) is started to drive the fixing plate (23) to move downward; the fixing plate (23) moves downward, driving the pressing plate (25) to move downward, so that the pressing plate (25) fits the display screen to fix it.

4. The LCD display screen production flipping device according to claim 1, characterized in that: The auxiliary device (3) comprises a plurality of mounting tubes (31) fixedly connected to the interior of the placement plate (11); an air pipe (34) is fixedly connected to one side of the upper end of the mounting tube (31); a pneumatic telescopic tube (35) is fixedly connected to the other end of the air pipe (34); the pneumatic telescopic tube (35) is fixedly connected to the upper side of the placement plate (11); and a plurality of pneumatic telescopic tubes (35) are arranged between adjacent limit plates (27); a suction cup (36) is fixedly connected to one end of the pneumatic telescopic tube (35) away from the air pipe (34); air is supplied to the interior of the pneumatic telescopic tube (35) through the air pipe (34), so that the suction cup (36) adsorbs the bottom end of the display screen.

5. The LCD display screen production flipping device according to claim 4, characterized in that: The upper end of the installation cylinder (31) is connected to the inner top wall of the placement plate (11), and a piston is slidably connected to the interior of the installation cylinder (31). The upper end of the piston is fixedly connected to a cylindrical rod (32), and the upper end of the cylindrical rod (32) passes through the upper side of the placement plate (11). The lower end of the cylindrical rod (32) is fixedly connected to the inner bottom wall of the installation cylinder (31) by a compression spring (33). When the cylindrical rod (32) moves downward, the cylindrical rod (32) drives the piston to move downward, and the air pressure at the upper end of the piston is reduced, which is used to supply air to the inside of the air pipe (34). At the same time, the piston continues to move downward, causing the pneumatic telescopic tube (35) to contract, thereby exerting a downward pulling force on the bottom end of the display screen.

6. The LCD display screen production flipping device according to claim 3, characterized in that: The two ends of the fixed plate (23) are fixedly connected to connecting plates (24), and the length between the two connecting plates (24) and the fixed plate (23) is greater than the distance between the two cylindrical rods (32).

7. The LCD display screen production flipping device according to claim 1, characterized in that: The cleaning device (4) comprises a plurality of cylinders (41) fixedly connected to the lower side of the connecting plate (24); the interior of the cylinders (41) is slidably connected to the upper end of the cylindrical rod (32); the upper end of the cylinders (41) is fixedly connected to a blowing pipe (42), and the blowing pipe (42) extends to the interior of the pressing plate (25); when the connecting plate (24) moves downward, the upper end of the fixed plate (23) moves upward inside the cylinder (41), transporting gas to the interior of the blowing pipe (42), so that the gas is blown toward the display screen.

8. The LCD display screen production flipping device according to claim 7, characterized in that: One side of the two connecting plates (24) is fixedly connected to a movable plate (241); one end of the movable plate (241) away from the connecting plate (24) is fixedly connected to a slider (242); and the slider (242) is slidably connected to the inside of the side plate (15); when the connecting plate (24) moves, the movable plate (241) is driven to move; and the movable plate (241) drives the slider (242) to slide inside the side plate (15).

9. The LCD display screen production flipping device according to claim 7, characterized in that: The two sides of the side plate (15) are fixedly connected with a rotating shaft (13), and the outside of the rotating shaft (13) is rotatably connected to the two sides of the workbench (1). One side of the workbench (1) is fixedly connected with a motor (12), and a belt (14) is sleeved between the output end of the motor (12) and one end of the rotating shaft (13). The motor (12) is started to drive the rotating shaft (13) to rotate, and the rotation of the rotating shaft (13) drives the display screen to flip.

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