LED display screen fixing device

Abstract

This utility model provides an LED display screen fixing device, including a base and a turnover frame. The turnover frame is rotatably mounted on the base. At least two outer surfaces of the turnover frame are respectively provided with mounting positions for fixing the LED display screen to be calibrated. The turnover frame can rotate relative to the base to adjust any mounting position to face the calibration equipment, so as to perform the calibration process on the LED display screen fixed at that mounting position. Simultaneously, workers can perform LED display screen loading operations on the other mounting positions on the turnover frame. That is, the above design allows the calibration process and the material changing process to be carried out simultaneously, reducing the time required for both processes, reducing waiting time, thereby reducing the overall time of the calibration operation, and improving overall production capacity and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, and in particular to an LED display screen fixing device. Background Technology

[0002] With the widespread application of LED (Light Emitting Diode) display technology in consumer electronics, commercial displays, smart cities, and other fields, global LED market demand has surged, leading to increased pressure on production capacity. However, under the demands of large-scale production and rapid delivery, the efficiency bottleneck of the LED calibration process has become increasingly prominent, becoming a core constraint on ramping up production capacity.

[0003] Currently, routine calibration operations mainly consist of two processes: manual material replacement and equipment calibration. Screws are often used to detachably connect the LED products and the product holders to facilitate loading and unloading. Calibration equipment is located directly in front of the product holders to calibrate the LED products that are vertically attached and fixed to the holders.

[0004] However, during the aforementioned calibration process, the material changeover process often has to wait until the calibration process is completed before it can begin. At the same time, the calibration equipment is idle during the material changeover period. The overall operation process is a series operation, which creates bottlenecks in the process, prolonging the calibration operation time and reducing production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an LED display screen fixing device for use in conjunction with calibration equipment to perform LED display screen calibration operations. This LED display screen fixing device can simultaneously perform the LED display screen calibration process and the material changing process, which can reduce the time required for the two processes, reduce waiting time, thereby reducing the overall time of calibration operations and improving overall production capacity and efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] According to one aspect of this application, a turnover calibration and fixing device is provided for use in conjunction with calibration equipment to perform calibration operations on an LED display screen. The LED display screen fixing device includes:

[0008] Base;

[0009] A turnover rack is rotatably mounted on the base; at least two outer surfaces of the turnover rack are respectively provided with mounting positions for fixing the LED display screen to be calibrated; the turnover rack is rotatable relative to the base to adjust any of the mounting positions to face the calibration device; and the remaining mounting positions on the turnover rack are used for loading materials.

[0010] In some embodiments, the LED display screen fixing device includes a rotating assembly, which includes an inner rotating component and an outer rotating component. The outer rotating component is disposed on the outer periphery of the inner rotating component and is rotatably connected to the inner rotating component. One of the inner rotating component and the outer rotating component is fixedly connected to the surface of the base, and the other is fixedly connected to the turnover frame.

[0011] The rotating assembly further includes a plurality of rolling elements, which are spaced apart circumferentially between the inner rotating element and the outer rotating element; the rolling elements are capable of rotating between the inner rotating element and the outer rotating element, so that the inner rotating element and the outer rotating element can rotate relative to each other.

[0012] In some embodiments, the surface of the inner rotating member extends upward beyond the outer rotating member, the turnover frame is connected to the top of the inner rotating member, and the outer rotating member is connected to the base;

[0013] The inner rotating component has a through hole, the turnover frame has a through hole, and the base has a through hole. The through hole, the through hole, and the through hole are connected to form a wiring channel, which is used for the cables of the LED display screen to pass through.

[0014] In some embodiments, the LED display fixing device further includes a positioning seat and a limiting member. The positioning seat is disposed on the base, and at least two sets of positioning seats are provided. The positioning seats are arranged on the outside of the turnover frame. The limiting member protrudes from the outside of the turnover frame and is disposed near the surface of the base. The limiting member is used to abut against the positioning seat to limit the rotation of the turnover frame.

[0015] In some embodiments, the turnover rack is provided with a mounting position on each of its two opposite sides;

[0016] The LED display screen fixing device includes two positioning seats and one limiting member. The two positioning seats are arranged on the outer sides of the two oppositely distributed sides of the turnover frame. The limiting member abuts against one of the positioning seats to restrict the rotation of the turnover frame.

[0017] In some embodiments, the LED display fixing device further includes a locking assembly, which includes a stop member rotatably disposed on the side of the positioning seat. The stop member can rotate relative to the positioning seat to approach the limiting member and press the limiting member to the side of the positioning seat; or, the stop member can rotate relative to the positioning seat to move away from the limiting member and disengage from the limiting member to unlock it.

[0018] In some embodiments, the locking assembly further includes a pressing member and a linkage member, wherein the pressing member is rotatably connected to the abutting member; one end of the linkage member is rotatably connected to the pressing member, and the other end of the linkage member is rotatably connected to the positioning seat.

[0019] The connection points between the abutting member and the positioning seat, the connection points between the abutting member and the pressing member, the connection points between the pressing member and the linkage member, and the connection points between the linkage member and the positioning seat are distributed at intervals in the same horizontal plane;

[0020] The pressing member can rotate to drive the linkage member to rotate relative to the positioning seat and disengage from the locking position, thereby enabling the abutting member to rotate away from the positioning seat. Alternatively, the pressing member can rotate to drive the linkage member to rotate relative to the positioning seat to the locking position, thereby enabling the abutting member to rotate to press and fix the limiting member on the positioning seat.

[0021] In some embodiments, the positioning seat includes a fixing body and a mounting body. The fixing body is disposed on the top of the base. One end of the fixing body near the turnover frame is used to abut against the limiting member to restrict the rotation of the turnover frame. The mounting body is disposed on the other side of the fixing body. The mounting body is rotatably connected to the abutting member and the linkage member respectively.

[0022] The mounting body is provided with a receiving position for accommodating the abutment, the linkage, and the pressing member.

[0023] In some embodiments, the turnover rack includes a frame and at least two mounting frames. The frame is rotatably connected to the base. Each mounting frame is correspondingly disposed on an outer side of the frame, and each mounting frame has a mounting position formed on it.

[0024] Each of the mounting frames includes a load-bearing beam and a limiting beam. The limiting beam is located at one end of the load-bearing beam along its length. The load-bearing beam is arranged at the bottom edge of the outer side of the frame, and the limiting beam is arranged at one side edge of the outer side of the frame.

[0025] The mounting frame also includes a mounting plate, which is disposed on the side of the limiting beam and the supporting beam facing the frame, and the mounting plate is connected to the outer side of the frame; the supporting beam, the limiting beam and the mounting plate enclose the mounting position.

[0026] In some embodiments, the base includes a base frame and a top plate disposed on top of the base frame, and the turnover rack is mounted on the top plate;

[0027] The LED display screen fixing device also includes multiple casters, which are spaced apart around the bottom of the base along the circumference of the base, and each caster is rotatably connected to the base;

[0028] The LED display screen fixing device also includes at least one foot support, which is vertically and flexibly disposed at the bottom of the base. The foot support can be raised and lowered relative to the base to adjust the position of the bottom of the foot support in the height direction of the base.

[0029] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0030] In this application, by rotating the turnover frame relative to the base, any mounting position can be adjusted to face the calibration equipment for calibration of the LED display screen fixed at that position. Simultaneously, the other mounting positions can serve as material changing operation sides, allowing operators to change LED displays from these sides. After calibration, the turnover frame can be rotated to adjust the position of each mounting position relative to the calibration equipment, causing the next LED display screen to face the calibration equipment and the calibrated LED display screen to be rotated to the operator's side for material changing. In other words, compared to the existing technology where calibration and material changing are performed alternately, this design allows for simultaneous calibration and material changing, reducing the time required for both processes, decreasing waiting time, and thus reducing the overall calibration time, improving overall capacity and production efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the LED display screen fixing device in this embodiment.

[0032] Figure 2 yes Figure 1 A schematic diagram of the LED display screen fixing device along the AA direction.

[0033] Figure 3 yes Figure 1 A schematic diagram of the LED display screen fixing device along the BB direction.

[0034] Figure 4 This is an exploded structural diagram of the turnover rack in this embodiment.

[0035] Figure 5 This is an exploded view of the LED display screen fixing device in this embodiment.

[0036] Figure 6 yes Figure 1 Enlarged structural diagram at point C.

[0037] The annotations in the attached figures are explained as follows:

[0038] 1. Base; 11. Bottom frame; 12. Top plate; 121. Through hole; 2. Turnover rack; 21. Frame; 22. Mounting frame; 221. Mounting position; 222. Bearing beam; 223. Limiting beam; 224. Mounting plate; 23. Fixing plate; 231. Through hole; 3. Rotating assembly; 31. Inner rotating part; 311. Through hole; 32. Outer rotating part; 33. Cage; 41. Positioning seat; 411. Fixing body; 412. Mounting body; 42. Limiting part; 5. Locking assembly; 51. Abutting part; 53. Pressing part; 54. Linkage part; 55. First rotating shaft; 56. Second rotating shaft; 57. Third rotating shaft; 58. Fourth rotating shaft; 6. Casters; 7. Connecting plate; 8. Foot support; 81. Support rod; 82. Seat; 83. Abutting part. Detailed Implementation

[0039] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0040] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) 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. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] This application provides an LED display screen fixing device for use in conjunction with calibration equipment to perform calibration operations on the LED display screen. The calibration operation involves fixing the LED display screen with the fixing device to align it with the calibration equipment, and then using the calibration equipment to correct the brightness, color, uniformity, and other properties of the LED display screen, thereby improving the consistency of the LED display screen's display effect.

[0043] For example, the calibration device may include an image acquisition unit, a calibrator, and a display controller. The image acquisition unit is communicatively connected to the calibrator, the calibrator is communicatively connected to the display controller, and the display controller is communicatively connected to the LED display screen. Specifically, after the LED display screen to be calibrated is powered on, the image acquisition unit is aligned with the display surface of the LED display screen to acquire the display status. The calibrator receives and analyzes the display status, calculates point-by-point calibration data, and outputs instructions to direct the display controller to perform point-by-point brightness and color calibration on the displayed image of the LED display screen.

[0044] It should be noted that this application does not improve the calibration device; the above description of the calibration device is merely an exemplary description of the prior art. The specific embodiments of the LED display screen fixing device of this application will be described in detail below with reference to the accompanying drawings.

[0045] In this application, the LED display screen to be calibrated may include a cabinet and multiple display modules arranged on the cabinet, or it may include only a single display module.

[0046] Figure 1 This is a schematic diagram of the LED display screen fixing device in this embodiment. Figure 2 for Figure 1 A schematic diagram of the LED display screen fixing device along the AA direction. Figure 3 for Figure 1 A schematic diagram of the LED display screen fixing device along the BB direction.

[0047] refer to Figures 1-3 The LED display screen fixing device includes a base 1 and a turnover frame 2. The turnover frame 2 is rotatably mounted on the base 1. At least two outer surfaces of the turnover frame 2 are respectively provided with mounting positions 221, which are used to fix the LED display screen to be calibrated. The turnover frame 2 can rotate relative to the base 1 to adjust any mounting position 221 to face the calibration equipment, and the remaining mounting positions 221 on the turnover frame 2 are used for loading materials.

[0048] In this application, by rotating the turnover frame 2 relative to the base 1, any mounting position 221 can be adjusted to face the calibration equipment for calibration of the LED display screen fixed on that mounting position 221. Simultaneously, the other mounting positions 221 can serve as the material changing operation side, allowing operators to change materials for the LED display screens from these sides. After the calibration process is completed, rotating the turnover frame 2 adjusts the position of each mounting position 221 relative to the calibration equipment, causing the next LED display screen to be calibrated to face the calibration equipment and the calibrated LED display screen to be rotated to the operator's side for material changing. That is, compared to the prior art where calibration and material changing are performed alternately, this design allows the calibration and material changing processes to be performed simultaneously, reducing the time required for both processes, decreasing waiting time, and thus reducing the overall time spent on calibration operations, improving overall capacity and production efficiency.

[0049] refer to Figures 1-3 The base 1 may include a base frame 11 and a top plate 12 disposed on the top of the base frame 11. Specifically, the top plate 12 is horizontally arranged on the top of the base frame 11.

[0050] For example, the base frame 11 may include an upper frame, a lower frame, and multiple columns, wherein the upper frame and the lower frame are vertically spaced apart, and the multiple columns are spaced apart and connected between the upper frame and the lower frame. Specifically, the upper frame includes four top beams, which are connected end-to-end to form a rectangular structure. The lower frame includes three bottom beams, which are connected sequentially to form a U-shaped structure. The lower frame may also include reinforcing beams, which are connected between two oppositely arranged bottom beams to enhance the structural strength of the lower frame. There are four columns, which are located at the four corners of the upper and lower frames. This design makes the base frame 11 lightweight, facilitating the movement of the LED display screen fixing device.

[0051] Of course, in other embodiments, the bottom frame 11 can be any other structure, and the specific settings are determined as needed, and are not limited here.

[0052] In practical applications, base 1 is arranged with one side facing the image acquisition unit of the calibration device. For ease of description, it is hereby defined that the side of base 1 facing the calibration device is the calibration side, and the other sides of base 1 can be used as the material changing operation side.

[0053] The base 1 has a through hole 121. Specifically, the top plate 12 has a through hole 121 in the middle, and the axis of the through hole 121 extends vertically.

[0054] The turnover rack 2 is rotatably mounted on the base 1. This design allows the turnover rack 2 to rotate relative to the base 1. By adjusting any one mounting position 221 to face the calibration equipment, that mounting position 221 will face the calibration side, ensuring that the LED display screen to be calibrated, fixed at that mounting position 221, faces the calibration equipment. The remaining mounting positions 221 face the material changeover operation side, facilitating material changeover operations for the workers. After the calibration process is completed, the turnover rack 2 can be rotated to adjust the position of each mounting position 221 relative to the calibration equipment. This allows the next LED display screen to be calibrated to face the calibration equipment, while simultaneously rotating the calibrated LED display screen to the material changeover operation side for easy material changeover. In other words, this design allows the calibration and material changeover processes to be performed simultaneously, reducing the time required for both processes, decreasing waiting time, and thus reducing the overall calibration time, improving overall capacity and production efficiency.

[0055] Specifically, the turnover rack 2 is arranged above the through hole 121 of the top plate 12. The turnover rack 2 is provided with a through hole 231, which is located above the through hole 121 and communicates with the through hole 121.

[0056] Figure 4 This is an exploded structural diagram of the turnover rack 2 in this embodiment.

[0057] refer to Figures 1-4 The turnover frame 2 includes a frame 21 and at least two mounting frames 22, wherein each mounting frame 22 is disposed on an outer side of the frame 21, and each mounting frame 22 has a mounting position 221 for fixing the LED display screen to be calibrated.

[0058] The frame 21 is rotatably mounted on the top of the base 1. Optionally, the turnover rack 2 also includes a fixing plate 23, with the frame 21 mounted on top of the fixing plate 23. The fixing plate 23 is rotatably mounted on the top of the top plate 12 of the base 1, and the opposite sides of the fixing plate 23 extend outward beyond the frame 21.

[0059] Specifically, the frame 21 is a hollow cuboid structure. For example, the frame 21 is a hollow cuboid structure formed by connecting 12 main beams end to end. The fixing plate 23 is provided with through holes 231.

[0060] There are two mounting frames 22, which are arranged on opposite outer surfaces of the frame 21. This design balances the forces on the frame 21 and improves its stability during rotation. In other words, there are two mounting positions 221, which are arranged on opposite outer surfaces of the frame 21.

[0061] Optionally, the bottom of each mounting frame 22 is also connected to the top of the portion of the fixing plate 23 that extends beyond the frame 21. That is, the fixing plate 23 can also support the mounting frame 22, thereby improving the stability of the mounting frame 22 and the overall structural stability of the turnover rack 2.

[0062] In other embodiments, the number of mounting frames 22 can also be three or four, depending on the specific needs, and is not limited here.

[0063] For example, the mounting frame 22 may include a supporting beam 222 and a limiting beam 223. The limiting beam 223 is located at one end of the supporting beam 222 along its length. The supporting beam 222 is positioned at the bottom edge of the outer side of the frame 21, and the limiting beam 223 is positioned at one side edge of the outer side of the frame 21. Specifically, the supporting beam 222 connects the top of the fixing plate 23 and the lower part of the outer side of the frame 21, extending horizontally along its length. The limiting beam 223 stands vertically on top of the supporting beam 222; that is, the supporting beam 222 and the limiting beam 223 are connected to form an L-shaped structure.

[0064] Optionally, the mounting frame 22 may further include a mounting plate 224, which is disposed on the side of the limiting beam 223 and the supporting beam 222 facing the frame 21, and is connected to the outer side of the frame 21. The supporting beam 222, the limiting beam 223, and the mounting plate 224 enclose and form a mounting position 221. Specifically, the mounting plate 224 is fixed to the outer side of the frame 21, and the mounting plate 224 is located on top of the fixing plate 23.

[0065] In practical applications, a clamp (not shown in the figure) is arranged on the mounting plate 224 of the mounting frame 22. For example, the clamp can be fixed to the mounting plate 224 with bolts, and the LED display screen is clamped and fixed at the mounting position 221 by the clamp. In this process, the bearing beam 222 can position the clamp in the vertical direction, and the limiting beam 223 can position the clamp in the horizontal direction. This ensures that the mounting position 221 of the clamp is fixed every time, and ensures that the relative position of the LED display screen and the calibration equipment remains unchanged during the production process.

[0066] For example, when the LED display screen to be calibrated includes a cabinet and multiple display modules arranged on the cabinet, the fixture may include a support plate and a clamping member. The support plate is arranged to fit against the mounting plate 224, with its bottom abutting against the support beam 222 and its sides abutting against the limiting beam 223. The support plate can be fixed to the mounting plate 224 by bolts. The clamping member is located on the surface of the support plate opposite to the mounting plate 224, and is located at the upper part of the support plate or at the end away from the limiting beam 223. The clamping member is used to hold the outer side of the LED display screen.

[0067] Optionally, the clamping element can move relative to the support plate, such as rotating or moving, and can move closer to or further away from the outer side of the LED display screen to clamp or unlock the LED display screen, making operation convenient and simple.

[0068] Optionally, a boss may be provided on the surface of the support plate facing away from the mounting plate 224. The boss and the clamping member are located at opposite ends of the support plate, and the boss and the clamping member cooperate to clamp and fix the LED display screen. The surface of the boss facing the clamping member has a positioning post, which is used to engage with the positioning holes on the LED display screen housing to achieve the positioning and placement of the LED display screen. In other embodiments, the fixing method between the clamp and the LED display screen housing can also include: magnetic adsorption fixing, locking fixing using quick-tight screws or quick-tight nuts, making a contoured groove on the clamp that matches the shape of the housing for snap-fit ​​engagement with the housing, or setting any method such as using a cylinder / electric rod / electric gripper on the clamp to clamp the housing.

[0069] In some embodiments, when the LED display screen to be calibrated includes a separate display module, the fixture may include a supporting body and multiple fixing members spaced apart on the supporting body. The supporting body has a receiving groove with an opening on one side, used to accommodate and limit the LED display screen. The supporting body is arranged on the mounting plate 224 with the opening of its receiving groove facing away from the mounting plate. The connection method between the supporting body and the mounting plate 224 can be referred to above. The fixing members are located within the receiving groove. Exemplarily, the side of the LED display screen opposite the display surface is provided with multiple mating parts, arranged one-to-one with multiple fixing members. The LED display screen is accommodated within the receiving groove. The LED display screen and the fixture can be magnetically fixed through magnetic engagement between the mating parts and the fixing members, plugged in through insertion engagement between the mating parts and the fixing members, or clamped by cylinders / electric rods / electric grippers on the fixture, etc.

[0070] It should be noted that the above-mentioned clamp structures are merely illustrative examples. In actual applications, any other structure can be used to clamp and fix the LED display screen, and no restrictions are imposed here.

[0071] Figure 5 This is an exploded view of the LED display screen fixing device in this embodiment.

[0072] refer to Figures 1-3 , Figure 5 The LED display screen fixing device also includes a rotating component 3, which is used for the rotatable connection between the turnover frame 2 and the base 1.

[0073] The rotating assembly 3 includes an inner rotating component 31 and an outer rotating component 32. The outer rotating component 32 is located on the outer periphery of the inner rotating component 31 and is rotatably connected to it. One of the inner rotating component 31 and the outer rotating component 32 is fixedly connected to the surface of the base 1, while the other is fixedly connected to the turnover frame 2, allowing the turnover frame 2 to rotate relative to the base 1. Specifically, the inner rotating component 31 is positioned above the through hole 121 of the top plate 12, a fixing plate 23 is connected to the top of the inner rotating component 31, and the outer rotating component 32 is fixedly connected to the top plate 12.

[0074] For example, the frame 21 and the inner rotating part 31, and the outer rotating part 32 and the top plate 12 can be connected by bolts, which can realize quick assembly and quick disassembly between the frame 21 and the inner rotating part 31, and between the outer rotating part 32 and the top plate 12, making the operation convenient and simple.

[0075] The surface of the inner rotating part 31 extends upward beyond the outer rotating part 32, so that the fixing plate 23 located on the top of the inner rotating part 31 is positioned above the outer rotating part 32 at intervals. This can prevent friction between the bottom of the turnover frame 2 and the outer rotating part 32 during rotation, thereby improving the smoothness of the rotation of the turnover frame 2.

[0076] Optionally, the rotating assembly 3 further includes multiple rolling elements, which are circumferentially spaced between the inner rotating element 31 and the outer rotating element 32. These rolling elements are capable of rotating between the inner rotating element 31 and the outer rotating element 32, allowing them to rotate relative to each other. The rolling elements transmit radial force, axial force, and torque through rolling motion. This design converts sliding friction into rolling friction, significantly reducing the rotational resistance between the inner rotating element 31 and the outer rotating element 32 and improving the stability of the inner rotating element 31's rotation relative to the outer rotating element 32.

[0077] Specifically, the rotating assembly 3 also includes a retainer 33, which is disposed between the inner rotating member 31 and the outer rotating member 32. The retainer 33 has multiple circumferentially spaced limiting holes, each containing a rolling element. The opposite sides of each rolling element contact the inner rotating member 31 and the outer rotating member 32 respectively, thus limiting the installation of the rolling element and allowing it to rotate between the inner and outer rotating members 31 and 32, enabling relative rotation between them. The design of the retainer 33 limits the position of the rolling elements, ensuring a spaced distribution between adjacent rolling elements, preventing friction between them, eliminating rotational torque fluctuations, and ensuring smooth operation.

[0078] For example, the rolling element can be cylindrical, and it makes line-to-line contact with the inner rotating element 31 and the outer rotating element 32, which can better disperse stress and significantly improve radial load-bearing capacity.

[0079] Optionally, the axes of each rolling element are arranged obliquely. The multiple rolling elements include at least two first rolling elements and at least two second rolling elements, with the first and second rolling elements alternating. The axes of the first rolling elements are obliquely inclined from top to bottom towards the outward rotating element 32, and the axes of the second rolling elements are obliquely inclined from top to bottom towards the inward rotating element 31. This design allows multiple rolling elements to simultaneously withstand multi-directional composite loads, avoiding localized overload. In other embodiments, the axes of each rolling element may also extend vertically.

[0080] In other embodiments, each rolling element may also be conical or spherical.

[0081] For example, the rotating component 3 can be a roller bearing.

[0082] In other embodiments, the rotating component 3 can also be a power component such as a motor or cylinder. In this case, the output shaft of the rotating component 3 is connected to the frame 21, and the rotating component 3 drives the frame 21 to rotate.

[0083] In this embodiment, the inner rotating component 31 is provided with a through hole 311, which communicates with the through hole 231 and the through hole 121. During the calibration operation, the through hole 311, the through hole 231 and the through hole 121 together form a wiring channel. The wiring channel is used for the cables of the LED display screen fixed at the mounting position 221 to pass through, avoiding the cables from being routed from the outer periphery of the turnover frame 2, which would cause the cables to become tangled or pulled during rotation. This reduces the swing amplitude of the cables during rotation and can protect the cables.

[0084] refer to Figures 1-3 , Figure 5 The LED display screen fixing device also includes a positioning seat 41 and a limiting member 42. The positioning seat 41 is disposed on the base 1, and there are at least two sets of positioning seats 41. The positioning seats 41 are arranged on the outside of the turnover frame 2. The limiting member 42 protrudes from the outside of the turnover frame 2 and is disposed close to the surface of the base 1. The limiting member 42 is used to abut against the positioning seat 41 to restrict the rotation of the turnover frame 2 and to position the relative position of each mounting frame 22 in the circumferential direction of the base 1, that is, to fix the orientation of each mounting frame 22.

[0085] Specifically, the LED display fixing device includes two positioning seats 41 and a limiting member 42. The two positioning seats 41 are arranged on the outer sides of the two oppositely distributed sides of the turnover frame 2. The limiting member 42 abuts against one of the positioning seats 41 to restrict the rotation of the turnover frame 2, so that the turnover frame 2 remains stationary with one of its mounting positions 221 facing the calibration equipment. This allows the display surface of the LED display fixed on the mounting position 221 to be directly opposite the image acquisition device of the calibration equipment, so that the image acquisition device can accurately and comprehensively acquire the display status of the LED display, thereby improving the accuracy of the calibration operation.

[0086] For example, the two positioning seats 41 are arranged collinearly with the rotating component 3, and the limiting member 42 is arranged in the middle of the width direction of the frame 21. This design ensures that the rotation angle is the same each time the frame 21 is rotated to switch the installation position 221 between the material changing operation side and the correction side. This allows the position change of the installation position 221 to be adjusted by the limiting member 42 and one of the positioning seats 41 abutting and cooperating, which is convenient for operation.

[0087] In some embodiments, the limiting member 42 is vertically mounted on the turnover rack 2. In this case, the top opening of the positioning seat 41 forms a positioning groove, and the limiting member 42 can move vertically relative to the turnover rack 2 to extend into the positioning groove, so that the limiting member 42 engages with the positioning groove to restrict the rotation of the turnover rack 2; or it can exit the positioning groove to unlock the turnover rack 2, so that the turnover rack 2 can rotate relative to the base 1.

[0088] In some embodiments, the LED display fixing device can omit the positioning seat 41 and directly set the locking hole on the top plate 12. The limiting member 42 is vertically mounted on the turnover frame 2 and can move vertically relative to the turnover frame 2, and can extend into or out of the locking hole.

[0089] Figure 6 for Figure 1 Enlarged structural diagram at point C.

[0090] refer to Figure 6 In this embodiment, the LED display screen fixing device further includes a locking component 5. The locking component 5 includes a stop member 51 rotatably disposed on the side of the positioning seat 41. The stop member 51 can rotate relative to the positioning seat 41 to approach the limiting member 42 and press the limiting member 42 to the side of the positioning seat 41; or, the stop member 51 can rotate relative to the positioning seat 41 to move away from the limiting member 42 and disengage from the unlocking limiting member 42.

[0091] The locking assembly 5 also includes a pressing member 53 and a linkage member 54. The pressing member 53 is rotatably connected to the abutting member 51, one end of the linkage member 54 is rotatably connected to the positioning seat 41, and the other end of the linkage member 54 is rotatably connected to the pressing member 53.

[0092] The connection points between the abutting member 51 and the positioning seat 41, the connection points between the abutting member 51 and the pressing member 53, the connection points between the pressing member 53 and the linkage member 54, and the connection points between the linkage member 54 and the positioning seat 41 are distributed at intervals in the same horizontal plane.

[0093] In practical applications, by applying external force to the pressing member 53, causing it to rotate, the linkage member 54 rotates relative to the positioning seat 41 and disengages from the locked position, allowing the abutment member 51 to rotate away from the positioning seat 41. Alternatively, by rotating the pressing member 53, the linkage member 54 rotates relative to the positioning seat 41 to the locked position, allowing the abutment member 51 to rotate and press the limiting member 42 firmly onto the positioning seat 41. During this locking or unlocking process, the design of the linkage member 54 ensures that the connection point between the pressing member 53 and the linkage member 54 is... The relative displacement generated during rotation also causes the connection point between the pressing member 53 and the abutting member 51 to undergo relative displacement during rotation, thus avoiding interference during rotation. This makes the linkage between the pressing member 53 and the abutting member 51 smoother, more precise, and more stable. Furthermore, the above design can better maintain the efficiency of force transmission, so that when no external force is applied, the abutting member 51 can apply a holding pressure to the limiting member 42, pressing and fixing the limiting member 42 onto the positioning seat 41, so that the turnover frame 2 remains fixed.

[0094] In the above process, the rotation direction of the pressing member 53 is the same as that of the linkage member 54, and the rotation direction of the pressing member 53 is opposite to that of the abutting member 51.

[0095] Specifically, the positioning seat 41 includes a fixing body 411 and a mounting body 412. The fixing body 411 is located on the top of the base 1, and one end of the fixing body 411 near the turnover rack 2 is used to abut against the limiting member 42 to restrict the rotation of the turnover rack 2. The mounting body 412 is located on the other side of the fixing body 411, and the mounting body 412 is rotatably connected to the abutment member 51. The mounting body 412 has a receiving position, which is open on the side opposite to the fixing body 411, and also open on both the side facing the turnover rack 2 and the side opposite to the turnover rack 2. One end of the abutment member 51 extends into the receiving position, and a first rotating shaft 55 passes through the abutment member 51 and the mounting body 412, providing a rotatable connection between the abutment member 51 and the mounting body 412. The first rotating shaft 55 extends vertically.

[0096] The second rotating shaft 56 passes through the second connecting part of the abutment member 51 and the pressing member 53, and the second rotating shaft 56 is used for the rotatable connection between the abutment member 51 and the pressing member 53. The second rotating shaft 56 extends vertically and is located at a distance from the first rotating shaft 55 on the side opposite to the fixed body 411.

[0097] One end of the linkage 54 extends into the receiving position. A third rotating shaft 57 passes through one end of the linkage 54 and the mounting body 412, and the third rotating shaft 57 is used for a rotatable connection between the linkage 54 and the mounting body 412. A fourth rotating shaft 58 passes through the other end of the linkage 54 and the pressing member 53, and the fourth rotating shaft 58 is used for a rotatable connection between the linkage 54 and the pressing member 53. Both the third rotating shaft 57 and the fourth rotating shaft 58 extend vertically, and the first rotating shaft 55, the second rotating shaft 56, the third rotating shaft 57, and the fourth rotating shaft 58 are spaced apart in the same horizontal plane.

[0098] In other embodiments, the locking assembly 5 can omit the pressing member 53 and the linkage member 54. In this case, the abutment member 51 is directly rotatably connected to the mounting body 412 via a rotating shaft. An elastic member is sleeved on the rotating shaft, and the elastic member elastically abuts against the mounting body 412 and the abutment member 51. Through elastic deformation, the abutment member 51 can press and fix the limiting member 42 onto the positioning seat 41. Specifically, the elastic member is a torsion spring.

[0099] In some embodiments, the locking assembly 5 may also be composed of at least two magnetic elements. The limiting member 42 is provided with at least one magnetic element, and the positioning seat 41 is provided with at least one magnetic element. When the limiting member 42 rotates with the turnover frame 2 to abut against the positioning seat 41, the limiting member 42 and the positioning seat 41 are magnetically connected by the magnetic elements to limit the rotation of the turnover frame 2 relative to the base 1.

[0100] In some embodiments, the locking component 5 can also be a bolt. The limiting member 42 and the positioning seat 41 are respectively provided with threaded holes. By screwing the bolt into the threaded holes on the limiting member 42 and the positioning seat 41, the limiting member 42 and the positioning seat 41 are connected and fixed, so as to restrict the rotation of the turnover frame 2.

[0101] refer to Figures 1-3 The LED display screen fixing device also includes multiple casters 6, which are spaced apart at the bottom of the base 1 along the circumference of the base 1. Each caster 6 is rotatably connected to the base 1. This design enables the LED display screen fixing device to be moved, making it convenient to transport the LED display screen fixing device.

[0102] There are four casters 6, which are set at the four corners of the base frame 11. This design can balance the force on the base 1 and improve the stability of the LED display screen fixing device. Specifically, a connecting plate 7 is provided at the bottom of each corner of the base frame 11, and the casters 6 are set on the connecting plate 7.

[0103] The LED display screen fixing device also includes at least one foot support 8, which is vertically and vertically mounted on the bottom of the base 1. The foot support 8 can be raised and lowered relative to the base 1 to adjust the position of the bottom of the foot support 8 in the height direction of the base 1, so that the foot support 8 can extend upward beyond the bottom of the caster 6, avoiding interference during the movement of the LED display screen fixing device by the rotation of the caster 6, and improving the smoothness of the movement of the LED display screen fixing device; or the foot support 8 can be flush with the bottom of the caster 6 to increase the friction with the outside (such as the ground), thereby limiting the automatic movement of the LED display screen fixing device under the action of the caster 6, and achieving the function of limiting the LED display screen fixing device.

[0104] Optionally, fasteners are provided on the foot support 8, and the fasteners are connected and fixed to the outside to strengthen the position restriction of the LED display screen fixing device, so that the LED display screen fixing device remains stationary, and the LED display screen can remain fixed during the calibration operation, thereby improving the comprehensiveness of the LED display screen's display status acquisition and the accuracy of calibration.

[0105] There are four foot supports 8, each foot support 8 is mounted on a connecting plate 7, and each foot support 8 can move up and down relative to the connecting plate 7 so that the vertical position of each foot support 8 is adjustable.

[0106] Specifically, the foot support 8 includes a support rod 81 and a base 82. The support rod 81 passes through the connecting plate 7 and can move up and down relative to the connecting plate 7. The base 82 is fixed to the bottom of the support rod 81. The outer periphery of the base 82 extends outward from the support rod 81 in the circumferential direction, so that the base 82 has a larger cross-sectional area, which increases the contact area with the outside and can improve the support stability of the base 1.

[0107] For example, abutment member 83 is sleeved on support rod 81 and screwed to support rod 81. Abutment member 83 is used to abut against the bottom of connecting plate 7 to position the relative positions of support rod 81 and connecting plate 7. In practical applications, the height of support rod 81 and connecting plate 7 can be adjusted by adjusting the height of abutment member 83 on support rod 81, so that abutment member 83 abuts against connecting plate 7, thus completing the height adjustment of foot support 8. The operation is convenient and simple.

[0108] The number of abutment members 83 can be two. The two abutment members 83 are respectively sleeved on the support rod 81 and are arranged on the upper and lower sides of the connecting plate 7. Both abutment members 83 can move vertically relative to the support rod 81 to abut against the upper and lower sides of the connecting plate 7 respectively. The two abutment members 83 cooperate to limit the foot support 8 on the connecting plate 7 and improve the stability of the foot support 8.

[0109] In some embodiments, the support rod 81 can be directly screwed to the connecting plate 7, and by rotating the foot support 8, the foot support 8 can move vertically under the action of the thread.

[0110] An exemplary embodiment of the usage steps of the above-described LED display screen fixing device is provided below. For ease of description, the two positioning seats 41 are respectively defined as the first positioning seat 41 and the second positioning seat 41, as follows:

[0111] Before calibration, the LED display screen fixing device has been moved to the designated position (so that one of the mounting positions 221 of the limited turnover frame 2 can face the calibration equipment). The height of the foot support 8 is adjusted so that the foot support 8 extends downward beyond the caster 6, so that the foot support 8 is in contact with the ground and the caster 6 is not in contact with the ground, thus raising the entire LED display screen fixing device horizontally to a certain height. After adjustment, the foot support 8 is locked and fixed to the ground with fasteners to ensure that the LED display screen fixing device does not move. A clamp is placed for each mounting frame 22, and the sides and bottom surfaces of the clamp are respectively against the limiting beam 223 and the load-bearing beam 222. The clamp is then locked and fixed to the mounting plate 224 with bolts.

[0112] During the initial loading, the operator, positioned on the material changing operation side (opposite to the calibration equipment), rotates the turnover frame 2 counterclockwise until the limiting member 42 approaches the first positioning seat 41. The operator then operates the locking assembly 5 on the first positioning seat 41, causing the pressing member 53 to rotate and the abutting member 51 to move closer together, while the abutting member 51 moves away from the first positioning seat 41. The turnover frame 2 is then rotated so that the limiting member 42 abuts against the side of the first positioning seat 41. Subsequently, the pressing member 53 is operated again to rotate and the abutting member 51 to move away from each other, while the abutting member 51 moves closer to the first positioning seat 41, pressing and fixing the limiting member 42 onto the first positioning seat 41 to restrict the rotation of the turnover frame 2 and keep it stationary. The LED display screen to be calibrated is then fixed to the fixture on the material changing operation side. When the pressing component 53 is operated, the abutment component 51 releases the limiting component 42 to unlock the turnover rack 2, at which point the turnover rack 2 is in a rotatable state. Rotate the turnover rack 2 clockwise so that the limiting component 42 is close to the second positioning seat 41. Operate the locking component 5 located on the second positioning seat 41 in the above manner to press and fix the limiting component 42 on the second positioning seat 41, so that the turnover rack 2 remains fixed. At this time, the LED display screen is positioned facing the calibration equipment. Start the calibration equipment to begin working, and at the same time, the operator fixes the second LED display screen to be calibrated on the clamp on the operating side.

[0113] After the calibration and loading processes are completed, the locking component 5 on the second positioning seat 41 is operated to release the limiting member 42, unlocking the turnover rack 2 and allowing it to rotate. The turnover rack 2 is then rotated counterclockwise until it approaches the first positioning seat 41. This process is repeated until the locking component 5 on the first positioning seat 41 presses and fixes the limiting member 42 onto the first positioning seat 41, keeping the turnover rack 2 stationary. At this point, the LED display screen to be calibrated faces the calibration side, and the calibrated LED display screen faces the operation side. The calibration equipment begins operation, and the operator removes the first calibrated LED display screen from the fixture, then fixes the third LED display screen to be calibrated onto the fixture on the operation side. These steps are repeated until the calibration of all required LED display screens is completed.

[0114] It should be noted that the above steps are merely illustrative and can be adjusted as needed in actual applications.

[0115] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0116] In this application, by rotating the turnover frame relative to the base, any mounting position can be adjusted to face the calibration equipment for calibration of the LED display screen fixed at that position. Simultaneously, the other mounting positions can serve as material changing operation sides, allowing operators to change LED displays from these sides. After calibration, the turnover frame can be rotated to adjust the position of each mounting position relative to the calibration equipment, causing the next LED display screen to face the calibration equipment and the calibrated LED display screen to be rotated to the operator's side for material changing. In other words, compared to the existing technology where calibration and material changing are performed alternately, this design allows for simultaneous calibration and material changing, reducing the time required for both processes, decreasing waiting time, and thus reducing the overall calibration time, improving overall capacity and production efficiency.

[0117] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An LED display screen fixing device for cooperating with a correction apparatus to implement a correction work of an LED display screen, characterized in that, The LED display screen fixing device includes: Base; A turnover rack is rotatably mounted on the base; at least two outer surfaces of the turnover rack are respectively provided with mounting positions for fixing the LED display screen to be calibrated; the turnover rack is rotatable relative to the base to adjust any of the mounting positions to face the calibration device; and the remaining mounting positions on the turnover rack are used for loading materials.

2. The LED display screen fixing device according to claim 1, characterized in that, The LED display screen fixing device includes a rotating assembly, which includes an inner rotating component and an outer rotating component. The outer rotating component is disposed on the outer periphery of the inner rotating component and is rotatably connected to the inner rotating component. One of the inner rotating component and the outer rotating component is fixedly connected to the surface of the base, and the other is fixedly connected to the turnover frame. The rotating assembly further includes a plurality of rolling elements, which are spaced apart circumferentially between the inner rotating element and the outer rotating element; the rolling elements are capable of rotating between the inner rotating element and the outer rotating element, so that the inner rotating element and the outer rotating element can rotate relative to each other.

3. The LED display screen fixing device according to claim 2, characterized in that, The surface of the inner rotating component extends upward beyond the outer rotating component, the turnover frame is connected to the top of the inner rotating component, and the outer rotating component is connected to the base; The inner rotating component has a through hole, the turnover frame has a through hole, and the base has a through hole. The through hole, the through hole, and the through hole are connected to form a wiring channel, which is used for the cables of the LED display screen to pass through.

4. The LED display screen fixing device according to claim 1, characterized in that, The LED display screen fixing device also includes a positioning seat and a limiting member. The positioning seat is disposed on the base, and there are at least two sets of positioning seats. The positioning seats are arranged on the outside of the turnover frame. The limiting member protrudes from the outside of the turnover frame and is disposed close to the surface of the base. The limiting member is used to abut against the positioning seat to restrict the rotation of the turnover frame.

5. The LED display screen fixing device according to claim 4, characterized in that, The turnover rack is provided with a mounting position on each of its two opposite sides; The LED display screen fixing device includes two positioning seats and one limiting member. The two positioning seats are arranged on the outer sides of the two oppositely distributed sides of the turnover frame. The limiting member abuts against one of the positioning seats to restrict the rotation of the turnover frame.

6. The LED display screen fixing device according to claim 4, characterized in that, The LED display screen fixing device further includes a locking assembly, which includes a stop member rotatably disposed on the side of the positioning seat. The stop member can rotate relative to the positioning seat to approach the limiting member and press the limiting member to fix it to the side of the positioning seat; or, the stop member can rotate relative to the positioning seat to move away from the limiting member and disengage from the limiting member to unlock it.

7. The LED display screen fixing device according to claim 6, characterized in that, The locking assembly further includes a pressing member and a linkage member. The pressing member is rotatably connected to the abutting member. One end of the linkage member is rotatably connected to the pressing member, and the other end of the linkage member is rotatably connected to the positioning seat. The connection points between the abutting member and the positioning seat, the connection points between the abutting member and the pressing member, the connection points between the pressing member and the linkage member, and the connection points between the linkage member and the positioning seat are distributed at intervals in the same horizontal plane; The pressing member can rotate to drive the linkage member to rotate relative to the positioning seat and disengage from the locking position, thereby enabling the abutting member to rotate away from the positioning seat. Alternatively, the pressing member can rotate to drive the linkage member to rotate relative to the positioning seat to the locking position, thereby enabling the abutting member to rotate to press and fix the limiting member on the positioning seat.

8. The LED display screen fixing device according to claim 7, characterized in that, The positioning seat includes a fixing body and a mounting body. The fixing body is located on the top of the base. One end of the fixing body near the turnover frame is used to abut against the limiting member to restrict the rotation of the turnover frame. The mounting body is located on the other side of the fixing body. The mounting body is rotatably connected to the abutting member and the linkage member respectively. The mounting body is provided with a receiving position for accommodating the abutment, the linkage, and the pressing member.

9. The LED display screen fixing device according to claim 1, characterized in that, The turnover rack includes a frame and at least two mounting frames. The frame is rotatably connected to the base. Each mounting frame is correspondingly disposed on an outer side of the frame, and each mounting frame has a mounting position formed on it. Each of the mounting frames includes a load-bearing beam and a limiting beam. The limiting beam is located at one end of the load-bearing beam along its length. The load-bearing beam is arranged at the bottom edge of the outer side of the frame, and the limiting beam is arranged at one side edge of the outer side of the frame. The mounting frame also includes a mounting plate, which is disposed on the side of the limiting beam and the supporting beam facing the frame, and the mounting plate is connected to the outer side of the frame; the supporting beam, the limiting beam and the mounting plate enclose the mounting position.

10. The LED display screen fixing device according to claim 1, characterized in that, The base includes a bottom frame and a top plate disposed on the top of the bottom frame, and the turnover frame is mounted on the top plate; The LED display screen fixing device also includes multiple casters, which are spaced apart around the bottom of the base along the circumference of the base, and each caster is rotatably connected to the base; The LED display screen fixing device also includes at least one foot support, which is vertically and flexibly disposed at the bottom of the base. The foot support can be raised and lowered relative to the base to adjust the position of the bottom of the foot support in the height direction of the base.

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