Display handling device

Abstract

The utility model provides a kind of display carrying device: including: mounting bracket;Variable distance rod, it is set on the mounting bracket, the variable distance rod changes the distance between the end portion of the variable distance rod away from the mounting bracket and the mounting bracket by size change or attitude change relative to the mounting bracket;Movable screen suction disc, it is set on the end of the variable distance rod away from the mounting bracket, and the movable screen suction disc is used to make the adsorption surface of its disc body adapt screen.Compared with prior art, the present application can quickly and efficiently self-adapt to adapt to curved display of different curvature by the setting of movable screen suction disc and variable distance rod, and when replacing curved display of different curvature in production line, the device can quickly adjust and adapt the curvature of curved display.

Description

Technical Field

[0001] This application belongs to the field of screen production equipment, and more specifically, relates to a display handling device. Background Technology

[0002] Curved displays are display devices with curved panels designed to enhance the user's visual experience and viewing effect. In the mass production of curved displays, individual displays need to be precisely transferred between multiple processes such as coating and assembly. Therefore, suction cup devices with high stability during handling are used. Common suction cups adhere to the display surface, relying on nozzle deformation to adhere to slightly curved displays. However, in the production of curved displays, product updates and iterations have led to diverse curvatures of displays. Relying solely on nozzle deformation can only adhere to slightly curved displays and cannot adapt to displays with various curvatures.

[0003] In conclusion, it is necessary to address the aforementioned issues in order to change the current situation. Utility Model Content

[0004] The purpose of this application is to provide a display transport device to solve the technical problem in the prior art that it cannot adapt to displays with various curvatures.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] A display handling device, comprising:

[0007] Mounting rack;

[0008] A pitch control rod is mounted on a mounting bracket. The pitch control rod changes the distance between the end of the pitch control rod furthest from the mounting bracket and the mounting bracket by changing its size or its posture relative to the mounting bracket.

[0009] The movable suction cup is located on the end of the variable pitch rod away from the mounting bracket. The movable suction cup is used to adapt the suction surface of its own body to the screen.

[0010] Optionally, the movable suction cup is a universal vacuum suction cup, and the interface tube of the movable suction cup is fixedly connected to the variable pitch rod.

[0011] Optionally, the pitch control rod is a rod with a fixed size, and the pitch control rod is movably mounted on the mounting frame.

[0012] Optionally, the mounting bracket moves vertically to approach the workpiece, and the pitch lever is vertically slidably mounted on the mounting bracket.

[0013] Optionally, the pitch rod and the mounting bracket are connected by a self-locking sliding connection. The self-locking sliding connection is used to keep the lower end of the pitch rod at a predetermined distance from the mounting bracket after the pitch rod moves upward relative to the mounting bracket by a predetermined stroke.

[0014] Optionally, the pitch rod is provided with multiple self-locking teeth, which are distributed along the sliding direction of the pitch rod. Each self-locking tooth has a clearance surface and a locking surface.

[0015] The mounting bracket is equipped with a self-locking block and a self-locking spring. The self-locking block is slidably mounted on the mounting bracket. Sliding causes the self-locking block to move in and out of the self-locking tooth groove. The self-locking block abuts against the clearance surface and is used to apply a force to the self-locking block to disengage from the self-locking tooth groove when the pitch rod moves upward relative to the mounting bracket. The self-locking block abuts against the locking surface and is used to limit the downward movement of the pitch rod relative to the mounting bracket.

[0016] The self-locking spring connects the mounting bracket and the self-locking block respectively. The self-locking spring is used to apply a force to the self-locking block to enter the self-locking groove.

[0017] Optionally, the pitch lever and the mounting bracket are provided with an initial position spring, which allows the pitch lever to move downward relative to the mounting bracket to the initial position after the self-locking between the pitch lever and the mounting bracket is released.

[0018] Optionally, a protective sleeve is provided on the upper side of the mounting bracket. The protective sleeve has a pitch-changing cavity and a locking block cavity that are connected together. The pitch-changing cavity allows the portion of the pitch-changing rod located on the upper side of the mounting bracket to slide. The pitch-changing cavity also provides an initial position spring, which is located above the pitch-changing rod. The locking block cavity provides a self-locking locking block and a self-locking spring. The locking block cavity has an operation window that exposes the self-locking locking block. The self-locking locking block is connected to the pitch-changing cavity through the locking block cavity.

[0019] Optionally, the pitch rod is slidably mounted on the mounting frame, and the cross-section of the portion of the pitch rod that passes through the mounting frame is non-circular.

[0020] Optionally, the mounting frame includes a central vertical beam and diagonal rods. The central vertical beam extends vertically. The middle part of the diagonal rod is rotatably connected to the lower end face of the central vertical beam. The two ends of the diagonal rod are respectively provided with pitch rods. There are two diagonal rods, which are arranged in a cross configuration.

[0021] The beneficial effect of the display handling device provided in this application is that, compared with the prior art, this application can quickly and efficiently adapt to curved displays with different curvatures by setting up a movable suction plate and a variable pitch rod. When changing to curved displays with different curvatures on the production line, the device can quickly adjust and adapt to the curvature of the curved display. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application;

[0024] Figure 2 This is a front view of an embodiment of this application;

[0025] Figure 3 Examples of embodiments of this application Figure 1 A magnified view of section A with the protective cover removed;

[0026] Figure 4 This is a partial cross-sectional view of the protective sleeve in an embodiment of this application;

[0027] Figure 5 This is a bottom view of an embodiment of this application.

[0028] The following are the labeling elements in the figure:

[0029] 1. Mounting bracket; 11. Central vertical beam; 12. Diagonal rod; 121. Locking bolt; 2. Pitch-changing rod; 21. Self-locking toothed groove; 211. Clearance surface; 212. Locking surface; 3. Movable suction cup; 4. Self-locking block; 5. Self-locking spring; 6. Initial position spring; 7. Protective sleeve; 71. Pitch-changing cavity; 72. Block cavity; 721. Operating window. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] like Figure 1 and Figure 2 As shown in the figure, this application discloses a display handling device, including:

[0034] Mounting bracket 1;

[0035] The pitch lever 2 is mounted on the mounting frame 1. The pitch lever 2 changes the distance between the end of the pitch lever 2 away from the mounting frame 1 and the mounting frame 1 by changing its size or changing its posture relative to the mounting frame 1. The change in posture relative to the mounting frame 1 means that the pitch lever 2 is not fixedly mounted on the mounting frame 1. When the mounting frame 1 moves, the pitch lever 2 can move relative to the mounting frame 1.

[0036] The movable suction cup 3 is located on the end of the variable distance rod 2 away from the mounting bracket 1. The movable suction cup 3 is used to adapt the suction surface of its own body to the screen.

[0037] In this embodiment, considering that the workpiece being adsorbed is a curved display, a movable suction plate 3 is used to adapt to the curvature of the curved display. Multiple movable suction plates 3 are provided. The core purpose of the "movement" in the movable suction plate 3 is to tilt the plate to a tilt angle that matches the corresponding position of the screen. As for how to move, it can be that the movable suction plate 3 as a whole moves with the variable pitch rod 2, or it can be that the small parts of the movable suction plate 3 itself move.

[0038] In actual production, curved displays are usually placed horizontally on the production line. In order to prevent the screen from being squeezed, the screen is usually placed face up, so the middle of the screen is lower than the two ends. Therefore, the movable screen suction cup 3 needs to be able to adjust the distance to suction the screen. The adjustment of the distance is achieved by the variable distance rod 2. In order to achieve the adjustment of the distance, the variable distance rod 2 can be implemented in two ways: first, the variable distance rod 2 itself can change size (such as telescopic length); second, the variable distance rod 2 is movably connected to the mounting frame 1 to achieve an attitude relative to the mounting frame 1. The core of the above two methods is that the distance between the end of the variable distance rod 2 away from the mounting frame 1 and the mounting frame 1 will change.

[0039] In this embodiment, the position where each movable screen suction cup 3 is attached will be different, so the angle at which the movable screen suction cup 3 needs to rotate will be different. In order to make the movable screen suction cup 3 adapt to the curvature change of the screen more conveniently and flexibly, and to keep the movable screen suction cup 3 firmly attached, the movement of the movable screen suction cup 3 will be smooth. Here, smooth means that when the mounting bracket 1 approaches the monitor, the movable screen suction cup 3 will rotate on its own after contacting the screen until the movable screen suction cup 3 tilts to an angle that matches the corresponding position of the screen.

[0040] Based on the desired technical effect, there are generally two implementation methods, both of which involve the structure of the movable suction cup 3. Specifically, the movable suction cup 3 includes an interface tube and a plate body. The interface tube is used to connect to the variable pitch rod 2, and the interface tube is connected to the air pump through an air pipe. The plate body is connected to the interface tube. Based on this, the two implementation methods are: the first method is that the interface tube is movably connected to the variable pitch rod 2, and the plate body is fixedly connected to the interface tube. This method is equivalent to the movable suction cup 3 moving as a whole. The second method is that the interface tube is fixedly connected to the variable pitch rod 2, and the plate body is movably connected to the interface tube. This method is equivalent to the plate body of the movable suction cup 3 moving independently.

[0041] Based on the two implementation methods, if the first method is adopted, the movable suction cup 3 will continuously pull the air tube connected to the movable suction cup 3 during the movement, which is prone to air leakage. Therefore, the second method is preferred. In the second method, the movable suction cup 3 can be directly selected as a universal vacuum suction cup, also known as a swing suction cup. The interface tube of the movable suction cup 3 is fixedly connected to the end of the variable pitch rod 2 away from the mounting bracket 1. The plate body of the movable suction cup 3 is ball-jointed with the interface tube and is also air-connected. The plate body can rotate freely within a range of ±15° through the ball-joint structure to ensure that the adsorption surface is completely attached to the screen surface to achieve stable adsorption and avoid excessive local force that could damage the screen.

[0042] In other embodiments, if the load-bearing capacity of the suction is considered, as well as the large-scale work, i.e. the scenario of infrequent dynamic changes, the movable suction cup 3 can also be a regular suction cup. The so-called regular suction cup is the one mentioned above where the interface tube and the plate body are not movably connected, but directly fixed. Based on this structure, the interface tube and the variable pitch rod 2 are ball-jointed, and the ball joint is also locked with bolts. This also allows the movable suction cup 3 to adapt to the tilt of different positions of the screen. At the same time, this structure allows the arrangement path of the air tube connected to the movable suction cup 3 to be determined after the relative posture between the movable suction cup 3 and the variable pitch rod 2 is determined. Therefore, the problem of the air tube being frequently pulled and damaged, as mentioned above, will not occur.

[0043] like Figures 2 to 4As mentioned above, the variable pitch rod 2 can be implemented in two ways. Based on the difficulty of implementing variable pitch, the difficulty here includes three aspects: first, the difficulty of changing the distance; second, the difficulty of maintaining the distance after changing the distance; and third, the difficulty of restoring the initial state after changing the distance. In addition, considering the simplicity of the structure, in this embodiment of the application, it is preferred that the variable pitch rod 2 is a rod with a fixed size, and the variable pitch rod 2 is movably set on the mounting frame 1. The movable setting means that the variable pitch rod 2 can move relative to the mounting frame 1. It can be that the variable pitch rod 2 swings and rotates, or it can be slid along one direction. The core is that the movement of the variable pitch rod 2 makes the distance between different movable suction cups 3 and the mounting frame 1 different, so that different movable suction cups 3 can fit against the surface of the workpiece.

[0044] Since the aforementioned variable pitch lever 2 is movable, and movable settings involve the power source for movement, in order to minimize the configuration of active power sources, where "active power source" can be manual operation or components such as motors and cylinders, it is desirable to rely on the power generated when the movable suction plate 3 contacts the display during the movement of the transport device. The movement trajectory of the transport device is mostly vertical and horizontal, that is, the mounting bracket 1 mostly moves vertically and horizontally, and when picking up the display, the mounting bracket 1 moves vertically downward. Based on this, it is preferable to arrange the variable pitch lever 2 vertically sliding on the mounting bracket 1.

[0045] When picking up the monitor, the mounting bracket 1 gradually moves down towards the monitor. During this process, the closer the screen is to the ends, the sooner it will contact the movable suction cups 3. After contact, the variable distance rods 2 will move upward relative to the mounting bracket 1 until the screen's closest point to the center contacts the movable suction cups 3. At this point, the mounting bracket 1 stops moving downward, and all the movable suction cups 3 are thus attached to the screen. In summary, during the process of the mounting bracket 1 moving downward to pick up the monitor, the resistance generated after the movable suction cups 3 contact the screen allows the variable distance rods 2 at different positions to move upward relative to the mounting bracket 1 at different distances, thereby enabling the different variable distance rods 2 to adapt to the height differences of different positions on the screen.

[0046] The design incorporates a locking function. Since the vertical sliding of the variable-pitch rod 2 adapts to the height differences at different positions on the screen, if the sliding connection between the variable-pitch rod 2 and the mounting bracket 1 lacks a locking function after all the movable screen suction cups 3 have attached to the screen, the movable screen suction cup 3 may accidentally slide down due to gravity, vibration, or external force after attaching to the screen or during transport, leading to suction failure, uneven screen stress, or even detachment and damage. Adding a locking function also better adapts to actual production scenarios. For example, when producing a different style of monitor, multiple variable-pitch rods 2 will perform an adaptation action during the first suction process. After the first suction, the relative positional relationship between all variable-pitch rods 2 and the mounting bracket 1 will be maintained. Subsequent suctions will then eliminate the need for the variable-pitch rods 2 to perform the adaptation action, thus accelerating the monitor transport process.

[0047] Based on the foregoing, the sliding connection between the pitch lever 2 and the mounting bracket 1 requires a locking function. Therefore, it is preferable that the pitch lever 2 and the mounting bracket 1 have a self-locking sliding connection. The self-locking sliding connection means that after each pitch lever 2 moves upward relative to the mounting bracket 1 by a predetermined stroke, the pitch lever 2 and the mounting bracket 1 can no longer move relative to each other, so that the lower end of the pitch lever 2 and the mounting bracket 1 are at a predetermined distance. The predetermined stroke and the predetermined distance are related to the position of the pitch lever 2 on the screen. The closer the pitch lever 2 is to the two ends of the screen, the greater the stroke and the smaller the distance.

[0048] In other embodiments, after all the movable screen suction cups 3 have adhered to the screen, the pitch rod 2 can be locked with bolts to maintain a predetermined distance between the lower end of the pitch rod 2 and the mounting bracket 1.

[0049] In addition to achieving a self-locking sliding connection for the pitch lever 2, a self-locking mechanism with a simple structure, reliable operation, and low manufacturing cost is required. This mechanism needs to ensure that the pitch lever 2 slides upward smoothly and effortlessly, and automatically and securely locks itself in place after reaching the predetermined position, effectively preventing the pitch lever 2 from accidentally sliding down under gravity or external force, thereby reliably maintaining the predetermined distance between the suction cup and the mounting bracket 1.

[0050] Based on this, firstly, the pitch rod 2 is provided with multiple self-locking tooth grooves 21, which are distributed along the sliding direction of the pitch rod 2. Each self-locking tooth groove 21 has a clearance surface 211 and a locking surface 212, wherein the locking surface 212 is a horizontal surface and the clearance surface 211 is an inclined surface.

[0051] Secondly, the mounting bracket 1 is equipped with a self-locking block 4 and a self-locking spring 5. The self-locking block 4 is slidably mounted on the mounting bracket 1. By sliding, the self-locking block 4 can move in and out of the self-locking tooth groove 21. In the optimal case, the sliding direction of the self-locking block 4 is perpendicular to the sliding direction of the pitch rod 2. The self-locking block 4 will abut against the clearance surface 211. Its function is to apply a force to the self-locking block 4 to disengage from the self-locking tooth groove 21 when the pitch rod 2 moves upward relative to the mounting bracket 1. The self-locking block 4 will also abut against the locking surface 212. Its function is to restrict the pitch rod 2 from moving downward relative to the mounting bracket 1.

[0052] Third, the self-locking spring 5 is connected to the mounting bracket 1 and the self-locking block 4 respectively. The self-locking spring 5 will apply a force to the self-locking block 4 to enter the self-locking groove 21.

[0053] In summary, when the pitch lever 2 moves upward relative to the mounting bracket 1, the clearance surface 211 of the self-locking groove 21 interacts with the self-locking block 4, overcoming the spring force of the self-locking spring 5 and causing the self-locking block 4 to disengage from the current self-locking groove 21, allowing upward sliding. After the pitch lever 2 has moved a predetermined distance, the self-locking spring 5 pushes the self-locking block 4 into the self-locking groove 21, and the locking surface 212 of the self-locking groove 21 abuts against the self-locking block 4, preventing the pitch lever 2 from sliding down, thereby achieving the automatic locking function and maintaining the predetermined distance between the lower end of the pitch lever 2 and the mounting bracket 1.

[0054] When the curved display is updated, the curvature of the curved display changes. Therefore, the pitch lever 2 needs to be released from self-locking and restored to its initial position for re-adaptation. When the self-locking block 4 disengages from the self-locking tooth groove 21, the pitch lever 2 can slowly fall with the help of gravity. However, since the sliding connection between the pitch lever 2 and the mounting bracket 1 is not completely smooth in the actual manufacturing process, it is usually difficult to achieve this by gravity. At this time, manual assistance is required to move the pitch lever 2 to its initial position.

[0055] Therefore, in order to quickly restore the device to its initial state, it is necessary to make the pitch lever 2 return to its initial position automatically, quickly, and reliably. Based on this, an initial position spring 6 is provided between the pitch lever 2 and the mounting bracket 1. Its function is to allow the pitch lever 2 to move downward relative to the mounting bracket 1 to the initial position after the self-locking between the pitch lever 2 and the mounting bracket 1 is released.

[0056] In order to keep the structure of the device simple, the pitch rod 2 is slidably mounted on the mounting frame 1. The cross section of the pitch rod 2 that passes through the mounting frame 1 is non-circular. The non-circularity means that the cross section of the pitch rod 2 relative to the sliding position of the mounting frame 1 is non-circular. This structure can prevent the pitch rod 2 from rotating when sliding, so that the sliding connection between the pitch rod 2 and the mounting frame 1 can be achieved directly by the shape of the pitch rod 2, without the need for other sliding connection devices such as guide rails.

[0057] Among them, based on the aforementioned self-locking sliding connection and initial position spring 6, if the self-locking structure and initial position spring 6 are exposed to the outside, they are easily affected by dust contamination, mechanical collisions and other factors, which affect reliability and lifespan; at the same time, the unlocking operation is not convenient enough. To further optimize this problem, the following settings are provided: A protective sleeve 7 is provided on the upper side of the mounting bracket 1. The protective sleeve 7 has a pitch-changing cavity 71 and a locking cavity 72 connected together. The pitch-changing cavity 71 allows the pitch-changing rod 2 to slide on the upper side of the mounting bracket 1. The pitch-changing cavity 71 also provides a primary spring 6. One end of the primary spring 6 abuts against the top of the pitch-changing rod 2, and the other end abuts against the inner wall of the pitch-changing cavity 71 away from the primary spring 6. The locking cavity 72 provides a self-locking locking block 4 and a self-locking spring 5. The locking cavity 72 has an operation window 721 that exposes the self-locking locking block 4. The self-locking locking block 4 is connected to the pitch-changing cavity 71 through the locking cavity 72. Based on the above, the self-locking locking block 4 can still be touched at the operation window 721, but the rest of the structure will be blocked by the protective sleeve 7.

[0058] In cases where the portion of the pitch rod 2 that passes through the mounting bracket 1 is not circular, the protective sleeve 7 can be smaller, making the device more concise.

[0059] The self-locking block 4 has a guide rod at one end near the self-locking spring 5. The guide rod is used for the self-locking spring 5 to be installed. The inner wall of the block cavity 72 has a guide groove corresponding to the guide rod, so that the guide rod can slide through. At the same time, the part of the self-locking block 4 located at the operation window 721 protrudes out of the operation window 721 to facilitate the activation of the self-locking block 4.

[0060] In summary, while stably achieving the self-locking function, the core moving and protective components are integrated into a protective sleeve 7, which improves the overall protection and durability of the self-locking structure, as well as the installation stability of the self-locking structure and the convenience of performing self-locking release operations.

[0061] like Figure 5 As shown, in another embodiment of this application, due to the different sizes of different displays, the mounting bracket 1, being a rigid, one-piece frame structure, cannot achieve this function to adapt to changes in display size. To further optimize this problem, the following configuration is provided: the mounting bracket 1 includes a central vertical beam 11 and diagonal rods 12. The central vertical beam 11 extends vertically; the middle part of the diagonal rods 12 is rotatably connected to the lower end face of the central vertical beam 11, and the two ends of the diagonal rods 12 are respectively provided with variable pitch rods 2. There are two diagonal rods 12, which are arranged in a cross configuration. By rotating the diagonal rods 12 until they are parallel to the diagonal of the screen, they can adapt to displays of different sizes.

[0062] The diagonal rod 12 can have a hole in the middle. The holes of the two diagonal rods 12 are aligned coaxially. The locking bolt 121 passes through the hole and fixes the diagonal rod 12 to the central vertical beam 11. When the locking bolt 121 is loosened, the diagonal rod 12 can rotate relative to its own middle. When the locking bolt 121 is tightened, the diagonal rod 12 cannot rotate.

[0063] In summary, as Figures 1 to 5 The structure shown has the following functions: First, by rotating the two diagonal rods 12, the movable suction cup 3 covers the area connecting the four corners of the curved display. Then, the locking bolts 121 at the intersection of the diagonal rods 12 are locked to adapt to the size of the curved display.

[0064] Second, the conveying device moves downward to the predetermined adsorption position. When the conveying device moves downward to adsorb the curved display, multiple movable screen suction plates 3 abut against the screen. The disk body of the movable screen suction plate 3 adapts to the curvature of the curved display through a ball joint structure. At the same time, after the movable screen suction plate 3 abuts against the screen, the variable pitch rod 2 moves upward relative to the mounting frame 1 to adapt to the height difference of different positions of the screen. When the variable pitch rod 2 moves upward relative to the mounting frame 1, the self-locking block 4 moves out of the self-locking tooth groove 21. When the variable pitch rod 2 adapts to the curvature to the corresponding height, the self-locking spring 5 pushes the self-locking block 4 to abut against the locking surface 212 of the self-locking tooth groove 21 to prevent the variable pitch rod 2 from sliding down, thus completing the adaptation of the conveying device to the curved display.

[0065] Third, when changing displays with different curvatures on the production line, the self-locking block 4 is pulled through the operation window 721 of the locking cavity 72, causing the self-locking block 4 to disengage from the locking surface 212 of the self-locking tooth groove 21. Then, the initial position spring 6 pushes the variable pitch rod 2 to move down to the initial position relative to the mounting bracket 1. At this time, the multiple movable screen suction plates 3 return to the same horizontal height. After that, repeating the second function mentioned above can realize the adaptation of the handling device to displays with different curvatures.

[0066] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display transport device, characterized in that, include: Mounting bracket (1); A pitch rod (2) is provided on the mounting frame (1). The pitch rod (2) changes the distance between the end of the pitch rod (2) away from the mounting frame (1) and the mounting frame (1) by changing its size or its posture relative to the mounting frame (1). The movable suction cup (3) is located on the end of the variable pitch rod (2) away from the mounting bracket (1). The movable suction cup (3) is used to adapt the suction surface of its own body to the screen.

2. The display handling device as described in claim 1, characterized in that: The movable suction cup (3) is a universal vacuum suction cup, and the interface tube of the movable suction cup (3) is fixedly connected to the variable pitch rod (2).

3. The display handling device as described in claim 1, characterized in that: The pitch rod (2) is a rod with a fixed size, and the pitch rod (2) is movably mounted on the mounting frame (1).

4. A display transport device as described in claim 3, characterized in that: The mounting bracket (1) moves vertically to approach the workpiece, and the pitch rod (2) is vertically slidably mounted on the mounting bracket (1).

5. A display transport device as described in claim 4, characterized in that: The pitch rod (2) and the mounting bracket (1) are connected by a self-locking sliding connection. The self-locking sliding connection is used to keep the lower end of the pitch rod (2) at a predetermined distance from the mounting bracket (1) after the pitch rod (2) moves upward relative to the mounting bracket (1) by a predetermined stroke.

6. A display transport device as described in claim 5, characterized in that: The variable pitch rod (2) is provided with a plurality of self-locking tooth grooves (21), which are distributed along the sliding direction of the variable pitch rod (2). Each self-locking tooth groove (21) has a clearance surface (211) and a locking surface (212). The mounting bracket (1) is provided with a self-locking block (4) and a self-locking spring (5). The self-locking block (4) is slidably disposed on the mounting bracket (1). The sliding causes the self-locking block (4) to move in and out of the self-locking tooth groove (21). The self-locking block (4) abuts against the clearance surface (211) and is used to apply a force to the self-locking block (4) to disengage from the self-locking tooth groove (21) when the pitch rod (2) moves upward relative to the mounting bracket (1). The self-locking block (4) abuts against the locking surface (212) and is used to restrict the pitch rod (2) from moving downward relative to the mounting bracket (1). The self-locking spring (5) is connected to the mounting bracket (1) and the self-locking block (4) respectively. The self-locking spring (5) is used to apply a force to the self-locking block (4) to enter the self-locking groove (21).

7. A display transport device as described in claim 6, characterized in that: The pitch rod (2) and the mounting bracket (1) are provided with an initial position spring (6), which is used to move the pitch rod (2) downward relative to the mounting bracket (1) to the initial position after the self-locking between the pitch rod (2) and the mounting bracket (1) is released.

8. A display transport device as described in claim 7, characterized in that: The upper side of the mounting bracket (1) is provided with a protective sleeve (7). The protective sleeve (7) has a pitch-changing cavity (71) and a locking cavity (72) connected together. The pitch-changing cavity (71) allows the pitch-changing rod (2) to slide on the upper side of the mounting bracket (1). The pitch-changing cavity (71) also provides the initial position spring (6), which is located above the pitch-changing rod (2). The locking cavity (72) provides the self-locking locking block (4) and the self-locking spring (5). The locking cavity (72) is provided with an operation window (721) that exposes the self-locking locking block (4). The self-locking locking block (4) communicates with the pitch-changing cavity (71) through the locking cavity (72).

9. A display transport device as described in claim 1, characterized in that: The variable pitch rod (2) slides through the mounting frame (1), and the cross-section of the portion of the variable pitch rod (2) that passes through the mounting frame (1) is non-circular.

10. A display transport device as claimed in claim 1, characterized in that: The mounting frame (1) includes a central vertical beam (11) and diagonal rods (12). The central vertical beam (11) extends vertically. The middle part of the diagonal rod (12) is rotatably connected to the lower end face of the central vertical beam (11). The two ends of the diagonal rod (12) are respectively provided for the variable pitch rod (2). There are two diagonal rods (12), and the two diagonal rods (12) are arranged in a cross configuration.

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