Black and white LCD screen installation leveling tool and leveling method

Abstract

The invention discloses a black and white LCD screen installation leveling tool and a leveling method, and belongs to the technical field of display equipment installation, and the tool comprises a frame and a leveling mechanism capable of moving on the frame. The leveling mechanism is provided with a first scanning plate and a second scanning plate which are parallel to each other. The first scanning plate is provided with an array type flexible pressure sensor which is used for detecting a convex screen during movement, and the first scanning plate is linked with an addressable LED lamp strip arranged on the second scanning plate through a microcontroller, so that the convex position and length are displayed in real time in a highlight mode. A normally-on LED lamp strip is additionally arranged on the second scanning plate, and the concave area is indicated through the light leakage phenomenon. The leveling mechanism is further provided with a concave processing sliding block and a convex processing sliding block which can process a concave area and a convex area respectively, the concave processing sliding block and the convex processing sliding block are each provided with an electric control telescopic mechanism and an electric suction cup, the concave screen can be automatically adsorbed and accurately pulled out or the convex screen can be accurately pressed in, and rapid leveling is achieved. According to the method, the automation level, efficiency and final flatness of screen installation can be remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of display device installation, and in particular to a leveling tool and a leveling method for a large-size spliced ​​screen. Background Art

[0002] Large display screens, particularly black-and-white LCD screens used in information bulletins and command centers, are typically constructed from several smaller screen units. During the installation process, due to manufacturing tolerances within each unit, precision errors within the mounting frame, and accumulated errors from manual installation, it's difficult to ensure that the display surfaces of all units are aligned perfectly. Consequently, some units often protrude or recede relative to their neighbors.

[0003] This unevenness can seriously affect the visual effect, such as image distortion at certain angles, obvious shadows at seams, or uneven reflections, reducing the display quality of the entire large screen.

[0004] Existing leveling methods usually rely on experienced installation masters. They first need to use high-precision rulers, feeler gauges and other tools to manually and point-by-point inspect the entire large screen to find the uneven locations. This process is time-consuming and labor-intensive, and the accuracy of the test results is greatly affected by subjective factors. After finding the problem point, use suction cups, pry bars and other tools to pull the concave screen outward or press the convex screen inward. This operation mode that separates "detection" and "correction" is not only cumbersome and inefficient, but also difficult to accurately control the force during the correction process, which can easily cause damage to the screen or over-adjustment, and repeated operations are required to achieve the desired effect. Therefore, the market urgently needs a leveling tool and method that integrates automatic detection and precise correction functions to improve efficiency and accuracy. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a black and white LCD screen installation and leveling tool and leveling method that can automatically detect the concave and convex positions of the screen and perform precise leveling, so as to solve the problems of low leveling efficiency, poor precision and reliance on manual experience in the existing technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A black and white LCD screen installation and leveling tool, comprising a frame, on which a leveling mechanism capable of laterally moving thereon is provided, the leveling mechanism comprising: a first scanning plate and a second scanning plate, wherein the first scanning plate and the second scanning plate are arranged parallel to each other and separated by a preset distance; An array-type flexible pressure sensor is provided on a side of the first scanning plate away from the second scanning plate; An addressable LED light strip is provided on the second scanning plate; A constantly on LED light strip, arranged on a side of the second scanning plate away from the first scanning plate; a microcontroller electrically connected to the arrayed flexible pressure sensor and the addressable LED light strip, and configured to control corresponding areas on the addressable LED light strip to light up to the same length in the areas squeezed on the arrayed flexible pressure sensor; A connecting block capable of being movably arranged longitudinally on the first scanning plate; a concave processing slider and a convex processing slider, both of which are arranged on the connecting block, wherein the concave processing slider is located between the first scanning plate and the second scanning plate, and the convex processing slider is located on a side of the first scanning plate away from the second scanning plate; At least one electrically controlled telescopic mechanism and at least one electric suction cup; the electrically controlled telescopic mechanism is provided on both the concave processing slider and the convex processing slider, and the movable end of the electrically controlled telescopic mechanism is provided with the electric suction cup.

[0007] Furthermore, the frame is supported by a plurality of lifting mechanisms, the bottom of the lifting mechanisms is connected to a bottom plate, and a plurality of positioning seats are provided at the bottom of the bottom plate.

[0008] Furthermore, the positioning seat is a suction cup.

[0009] Furthermore, a first handle is provided on the connecting block, and a second handle is provided on the second scanning plate.

[0010] Furthermore, the addressable LED light strip and the array-type flexible pressure sensor are parallel to each other in the length direction and aligned at both ends.

[0011] Furthermore, the electrically controlled telescopic mechanism and the electric suction cup are both electrically connected to the microcontroller.

[0012] A method for installing and leveling a black and white LCD screen comprises the following steps: S1: Move the leveling mechanism to make the first scanning plate and the second scanning plate adhere to the screen surface and move forward in a single direction; During the forward movement, the array-type flexible pressure sensor is squeezed, and the microcontroller controls the addressable LED light strip to light up the corresponding length and position to detect and indicate the convex screen area; During the forward movement, the sunken screen area is detected and located by observing the light emitted from the constantly lit LED light strip and passing through the gap between the second scanning plate and the screen; S2: when a sunken screen area is detected, moving the sunken processing slider to a position facing the sunken screen area; Controlling the electrically controlled telescopic mechanism provided on the recessed processing slider to extend so that the electric suction cup contacts and absorbs the recessed screen area; Controlling the electrically controlled retractable mechanism to retract, and pulling the recessed screen area out until it is flush with the contact surface of the first scanning plate and the second scanning plate; S3: when a convex screen area is detected, moving the convex processing slider to a position corresponding to the convex screen area; Controlling the electrically controlled telescopic mechanism provided on the convex processing slider to extend so that the electric suction cup contacts and absorbs the convex screen area; The electrically controlled telescopic mechanism is controlled to be further extended, and the convex screen area is pressed in until it is flush with the contact surface of the first scanning plate.

[0013] Furthermore, before step S1, a preparation step of adjusting the height of the frame by a lifting mechanism is also included.

[0014] Furthermore, after step S3, a fine-tuning step is also included; when the convex screen area is pressed in excessively, the convex screen area is pulled back to be flush with the contact surface of the first scanning plate by the electrically controlled telescopic mechanism.

[0015] Furthermore, in step S1, the leveling mechanism is pushed by the second handle to move laterally; In step S2 or S3, the connecting block is moved by the first handle for longitudinal positioning.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention integrates the detection and correction systems into a single device, achieving an integrated "measure and adjust" workflow. As the operator pushes the leveling mechanism to scan, once visual light signals indicate an uneven area, they can directly operate the integrated correction slider to level it without marking the location or changing tools. This seamless operation completely eliminates pauses and waiting in the process, significantly improving overall leveling efficiency.

[0017] 2. The present invention achieves high-precision operation through technical means: High detection accuracy: The array-type flexible pressure sensor can accurately reflect the length and position of the convex area, while the "light gap method" is extremely sensitive to the detection of depressions. These two objective physical signal detections completely replace vague manual judgment.

[0018] High Correction Precision: An electrically controlled telescopic mechanism performs the push-in and pull-out movements, with displacement precisely programmable, enabling repeatable, quantifiable micron-level adjustments. Specifically, the "over-press and pull-back" fine-tuning feature for convex screens ensures precise alignment with every adjustment, resulting in near-perfect final flatness and effectively eliminating image distortion and optical artifacts caused by precision issues.

[0019] 3. This invention transforms complex skill requirements into simple, standardized operations through automation. Operators do not need to understand complex flatness principles; they simply need to identify intuitive signals such as "light on" or "light leak" and operate handles and buttons. This allows even junior technical workers to quickly take up their posts and complete high-quality leveling work after a brief training session, solving the problem of a shortage of highly skilled personnel for enterprises and effectively controlling labor costs.

[0020] 4. This invention uses an electric suction cup to hold the screen. This method provides a large contact area and even stress distribution, firmly grasping the screen without causing damage. Furthermore, the electrically controlled retractable mechanism applies a smooth and linear force, avoiding impact and instantaneous overload. The entire leveling process is carried out in a safe and controllable state, maximizing the protection of the valuable screen asset. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the overall structure of the leveling tool of the present invention; Figure 2 It is a detailed structural diagram of the leveling mechanism of the present invention; Figure 3 Detailed structural diagram of the first scanning plate of the present invention; Figure 4 Detailed structural diagram of the second scanning plate of the present invention; Figure 5 Detailed structural diagram of the concave processing slider and the convex processing slider of the present invention; Figure 6 This is a schematic diagram of the working of the leveling tool of the present invention when detecting a concave screen; Figure 7 This is a schematic diagram of the working of the leveling tool of the present invention when detecting a convex screen.

[0022] In the figure: 1. Frame; 2. Leveling mechanism; 201. First scanning plate; 2011. Array-type flexible pressure sensor; 202. Second scanning plate; 2021. Constant-on LED light strip; 2022. Addressable LED light strip; 203. Microcontroller; 204. Concave processing slider; 205. Convex processing slider; 206. Connecting block; 207. First handle; 208. Second handle; 209. Electric telescopic mechanism; 210. Electric suction cup; 3. Lifting mechanism; 4. Bottom plate; 5. Positioning seat. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0025] 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0026] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] See also Figure 1This embodiment provides a tool for installing and leveling black and white LCD screens. In response to the existing technical issues of assembling large screens, which often result in dents or bulges on the screen surface due to accumulated tolerances, the tool must rely on manual point-by-point inspection and correction, resulting in a cumbersome process, low efficiency, and difficulty ensuring accuracy. The present invention provides a comprehensive solution that integrates both inspection and correction functions. The tool's overall structure comprises a large frame 1, which provides a stable base for the installation and movement of a leveling mechanism 2. To accommodate the needs of various installation sites and screen sizes, the frame 1 is supported by multiple lifting mechanisms 3, which allow the operator to adjust the overall working height of the leveling mechanism 2. To ensure stability during operation, a large base plate 4 is attached to the bottom of the lifting mechanisms 3, and multiple positioning bases 5 are provided at the bottom of the base plate 4. In this embodiment, the positioning bases 5 are preferably suction cups. By adhering to the ground, they effectively prevent accidental shaking or displacement of the tool during horizontal scanning or leveling operations, ensuring reliable operation.

[0028] Please continue reading Figures 2 to 7 Next, we will explain the core component of the present invention—the leveling mechanism 2. The leveling mechanism 2 can slide freely laterally on the frame 1 and comprises a first scanning plate 201 and a second scanning plate 202, which are parallel to each other and maintain a fixed distance. The inner surfaces of these two scanning plates together form an ideal flat reference surface, which is used to align with the screen surface for scanning during operation.

[0029] In order to solve the problem of low efficiency and easy omission of traditional manual detection of convex screens, the present invention designs an automatic convex detection system. Figure 3 and Figure 7 On the rake face of the first scanning plate 201 in the forward direction, that is, on the side away from the second scanning plate 202, a long strip array of flexible pressure sensors 2011 is set along its vertical direction. When the leveling mechanism 2 moves along the screen surface, the first scanning plate 201, as the vanguard, will first contact any protruding screen unit. This contact will squeeze the array of flexible pressure sensors 2011 corresponding to the protruding area. Figure 4, an addressable LED light strip 2022 is provided on the second scanning plate 202. The leveling mechanism 2 also includes a microcontroller 203 as a control core, which establishes electrical connections with the array-type flexible pressure sensor 2011 and the addressable LED light strip 2022. When the microcontroller 203 receives a signal from the array-type flexible pressure sensor 2011 that a certain length area is continuously pressed, it will immediately execute a preset program to map the position and length information to the addressable LED light strip 2022 and control the lighting of the completely corresponding section thereon. In this way, the operator does not need to perform complex measurements, but can instantly, intuitively and accurately know the position and size of the convex screen by simply observing the light emission of the addressable LED light strip 2022, thereby transforming subjective manual judgment into objective signal indication.

[0030] Specifically, the working principles of the addressable LED strip 2022, the arrayed flexible pressure sensor 2011, and the microcontroller 203 are as follows: The array-type flexible pressure sensor 2011 is essentially a flexible film with numerous independent pressure-sensing points integrated into it. These points are tightly and linearly arranged along its length, enabling the sensor to precisely detect the physical area of ​​the film that is experiencing pressure. Simultaneously, the addressable LED strip 2022 is also composed of a linear array of independently controllable LEDs. In this embodiment, the sensing points on the sensor are physically aligned parallel to the LEDs on the strip, and logically correspond one-to-one. As the system's core controller, the microcontroller 203 uses a pre-set program to perform real-time polling and scanning of all sensing points on the array of flexible pressure sensors 2011 at an extremely high frequency of hundreds of times per second. When the first scanning plate 201 of the leveling mechanism 2 encounters a protruding screen unit during movement, the edge of the screen unit presses against a continuous area on the array of flexible pressure sensors 2011. The microcontroller 203 instantly detects this change and accurately identifies the starting and ending positions and total length of the pressure sensing points. Subsequently, based on its internally stored mapping, microcontroller 203 converts the information about the pressure zone (for example, from sensing point 50 to sensing point 100) into a precise control instruction, which is then transmitted via the data line to the addressable LED strip 2022. This instruction illuminates the same section of the addressable LED strip 2022, from lamps 50 to 100. This creates a real-time, intuitive display of a light bar that perfectly matches the physical size and position of the convex screen, providing the operator with a clear, unambiguous visual signal. When the leveling mechanism 2 passes over the convex area and the pressure disappears, microcontroller 203 similarly detects the release of the signal and immediately sends a command to extinguish the corresponding LEDs. This entire process achieves a seamless, automated transition from physical contact to optical indication.

[0031] Similarly, in order to solve the problem of small gaps being difficult to detect when manually inspecting a sunken screen, the present invention also provides an ingenious sunken detection system. Figure 4 and Figure 6 , another long strip of constantly on LED light strip 2021 is set on the side of the second scanning plate 202 away from the first scanning plate 201. During the scanning process, when the two scanning plates cross a recessed screen unit, a tiny gap will be formed between the reference surface of the second scanning plate 202 and the recessed screen surface. At this time, the light emitted by the constantly on LED light strip 2021 will pass through this gap, forming a clearly visible light leakage between the first scanning plate 201 and the second scanning plate 202. The operator only needs to pay attention to this phenomenon during scanning to quickly and accurately locate all recessed areas. Compared with the traditional method of probing point by point with tools such as feeler gauges, both efficiency and sensitivity are improved.

[0032] After achieving efficient and accurate detection, the present invention further integrates precise correction functions, thereby building an efficient working mode of "measure and adjust immediately". Figure 2 and Figure 5 The first scanning plate 201 is equipped with a connecting block 206 that can slide longitudinally along its length. A concave processing slider 204 and a convex processing slider 205 are fixed to either side of the connecting block 206. This layout allows the correction unit to move laterally with the leveling mechanism 2. Through the longitudinal sliding of the connecting block 206 itself, precise two-dimensional positioning of any point on the screen is achieved. Both the concave processing slider 204 and the convex processing slider 205 are equipped with an electrically controlled telescopic mechanism 209 facing the screen, and electric suction cups 210 are installed at their movable ends.

[0033] Once a concave area is detected through light leakage, the operator moves the concave treatment slider 204 to the target position to initiate correction. The electrically controlled retractable mechanism 209 is then controlled to extend, allowing the electric suction cup 210 to contact and absorb the concave screen unit surface. The electrically controlled retractable mechanism 209 is then controlled to retract, pulling the screen unit outward in a smooth, linear manner until its surface is flush with the reference surfaces of the first scanning plate 201 and the second scanning plate 202.

[0034] When the convex area is detected through the light indication, the convex processing slider 205 is moved to the target position. After the electric-controlled telescopic mechanism 209 is extended to allow the electric suction cup 210 to absorb the convex screen unit, it will be controlled to extend further and accurately, pressing it inward with a gentle force. The entire process is executed by the electronic control system, and its displacement can be precisely controlled, achieving micron-level adjustment accuracy that is difficult to achieve with traditional manual operations. In particular, since the electric suction cup 210 always remains in an adsorbed state during the pressing process, even if it is pressed too much, the screen unit can be pulled back to the ideal flush position through reverse fine-tuning of the electric-controlled telescopic mechanism 209. This controllable and reversible fine-tuning capability completely solves the risk of repeated operations and potential equipment damage caused by uneven force or misjudgment during manual calibration.

[0035] In order to improve the convenience of operation, a first handle 207 is provided on the connecting block 206 to facilitate the operator to perform longitudinal positioning; a second handle 208 is provided on the second scanning plate 202 to facilitate the operator to push the entire leveling mechanism 2 for horizontal scanning.

[0036] In summary, the present invention, through the above-mentioned structural design and working method, provides a complete technical solution. The core of the solution lies in the innovative integration of the detection and calibration steps, which were previously separate and relied on manual experience, into a standardized operation process.

[0037] At the detection end, through the linkage between the array-type flexible pressure sensor 2011 provided on the first scanning plate 201 and the addressable LED light strip 2022 provided on the second scanning plate 202, as well as the light leakage phenomenon formed by the constantly-on LED light strip 2021, the detection work that originally required repeated trials with the help of tools and was highly subjective is transformed into an efficient, intuitive and objective signal recognition process, which greatly improves the speed and accuracy of discovering convex and concave problems and reduces the skill requirements for operators.

[0038] On the correction side, the integration of the concave and convex sliders 204 and 205 into a connecting block 206, which allows for precise two-dimensional positioning on the screen, achieves a seamless "find and fix" approach. More importantly, the use of an electrically controlled retractable mechanism 209 and an electric suction cup 210 to perform the pull-out and push-in actions replaces uneven and potentially damaging manual force with precise, controllable, and repeatable mechanical operations. In particular, the system's fine-tuning capabilities ensure precise alignment of each adjustment, fundamentally improving the final screen flatness quality and guaranteeing device safety during installation.

[0039] Therefore, the present invention not only solves the core pain points of low efficiency and insufficient precision in the existing technology, but also, through an integrated design concept, transforms the leveling work of the entire large-size screen from a high-threshold skill to a streamlined, efficient, high-quality standardized industrial process.

[0040] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A black and white LCD screen installation and leveling tool, comprising a frame (1), wherein a leveling mechanism (2) capable of laterally moving thereon is provided on the frame (1), characterized in that: The leveling mechanism (2) comprises: A first scanning plate (201) and a second scanning plate (202) are arranged parallel to each other and at a fixed distance; An array-type flexible pressure sensor (2011) is arranged on a side of the first scanning plate (201) away from the second scanning plate (202); An addressable LED light strip (2022), arranged on the second scanning plate (202); a constantly on LED light strip (2021), arranged on a side of the second scanning plate (202) away from the first scanning plate (201); a microcontroller (203), the microcontroller (203) being electrically connected to the array-type flexible pressure sensor (2011) and the addressable LED light strip (2022); A connecting block (206) capable of being movably arranged longitudinally on the first scanning plate (201); a concave processing slider (204) and a convex processing slider (205), both of which are arranged on the connecting block (206), wherein the concave processing slider (204) is located between the first scanning plate (201) and the second scanning plate (202), and the convex processing slider (205) is located on a side of the first scanning plate (201) away from the second scanning plate (202); The electrically controlled telescopic mechanism (209) is provided on both the recessed processing slider (204) and the convex processing slider (205), and the movable end of the electrically controlled telescopic mechanism (209) is provided with the electric suction cup (210).

2. The black and white LCD screen installation and leveling tool according to claim 1, characterized in that: The frame (1) is supported by a plurality of lifting mechanisms (3); the bottom of the lifting mechanisms (3) is connected to a bottom plate (4); and the bottom of the bottom plate (4) is provided with a plurality of positioning seats (5).

3. The black and white LCD screen installation and leveling tool according to claim 2, characterized in that: The positioning seat (5) is a suction cup.

4. The black and white LCD screen installation and leveling tool according to claim 1, characterized in that: A first handle (207) is provided on the connecting block (206), and a second handle (208) is provided on the second scanning plate (202).

5. The black and white LCD screen installation and leveling tool according to claim 1, characterized in that: The addressable LED light strip (2022) and the array-type flexible pressure sensor (2011) are parallel to each other in the length direction and aligned at both ends.

6. The black and white LCD screen installation and leveling tool according to claim 1, characterized in that: The electrically controlled telescopic mechanism (209) and the electric suction cup (210) are both electrically connected to the microcontroller (203).

7. A method for installing and leveling a black and white LCD screen, characterized in that: The steps include: S1: moving the leveling mechanism (2) so that the first scanning plate (201) and the second scanning plate (202) are attached to the screen surface and move forward in a single direction; During the forward movement, the array-type flexible pressure sensor (2011) is squeezed, and the microcontroller (203) controls the addressable LED light strip (2022) to light up the corresponding length and position, so as to detect and indicate the convex screen area; During the forward movement, the sunken screen area is detected and located by observing the light emitted from the constantly lit LED light strip (2021) and passing through the gap between the second scanning plate (202) and the screen; S2: when a sunken screen area is detected, moving the sunken processing slider (204) to a position facing the sunken screen area; controlling the electrically controlled telescopic mechanism (209) provided on the recessed processing slider (204) to extend so that the electric suction cup (210) contacts and absorbs the recessed screen area; Controlling the electrically controlled telescopic mechanism (209) to retract, and pulling the recessed screen area out until it is flush with the contact surfaces of the first scanning plate (201) and the second scanning plate (202); S3: when a convex screen area is detected, the convex processing slider (205) is moved to a position corresponding to the convex screen area; Controlling the electric-controlled telescopic mechanism (209) provided on the convex processing slider (205) to extend so that the electric suction cup (210) contacts and absorbs the convex screen area; The electrically controlled telescopic mechanism (209) is controlled to be further extended, and the convex screen area is pressed in until it is flush with the contact surface of the first scanning plate (201).

8. The method for installing and leveling a black and white LCD screen according to claim 7, wherein: Before step S1, a preparation step of adjusting the height of the frame (1) by means of a lifting mechanism (3) is also included.

9. The method for installing and leveling a black and white LCD screen according to claim 7, wherein: After step S3, a fine-tuning step is also included; when the convex screen area is pressed in excessively, the convex screen area is pulled back to be flush with the contact surface of the first scanning plate (201) through the electrically controlled telescopic mechanism (209).

10. The method for installing and leveling a black and white LCD screen according to claim 7, wherein: In step S1, the leveling mechanism (2) is pushed by the second handle (208) to move laterally; In step S2 or S3, the connecting block (206) is moved by the first handle (207) for longitudinal positioning.

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