Liquid crystal display panel attaching mechanism

Abstract

The utility model relates to the technical field of display screen production equipment, and provides a liquid crystal display panel attaching mechanism which comprises a main body, a placing frame, a suction cup assembly and a detection unit, and the detection unit comprises a calculation module and a plurality of detection supporting pieces evenly arranged in the placing frame; each detection supporting piece comprises a supporting block, a spring and a pressure sensor. The pressure sensor is installed in the placing frame, the supporting block is located at the upper end of the pressure sensor and used for supporting the optical material panel, and a spring is arranged between the pressure sensor and the supporting block. Each pressure sensor is connected with the calculation module; according to the utility model, through the arrangement of the detection unit, the pressure information of each pressure sensor in the attaching process can be monitored in real time, whether the liquid crystal panel and the optical material panel are accurately attached or not can be judged, the phenomena of attaching deviation and the like can be found in time, and the attaching mechanism can be overhauled and adjusted in time.

Description

Technical Field

[0001] This utility model relates to the field of display screen production equipment technology, and in particular to a liquid crystal panel attaching mechanism. Background Technology

[0002] In the manufacturing process of a display screen, the bonding of the liquid crystal panel (LCD) to the optical panel is a crucial step, directly affecting the optical performance and overall quality of the display. Before bonding, it is necessary to ensure that the LCD and optical material panels are clean and dust-free to guarantee the quality of the display screen and avoid air bubbles during bonding. When bonding the LCD and optical material panels, the two must be precisely bonded and then gently pressure is applied to ensure a tight bond.

[0003] CN221406232U discloses an auxiliary device for attaching optical materials to a liquid crystal panel, including a support frame. The bottom wall of the support frame is provided with two receiving slots for stacking liquid crystal panels and optical material panels, respectively. Two first support rods are fixedly installed between the inner walls of the left and right sides of the support frame. A first slider is slidably installed between the two first support rods. A driving assembly for driving the first slider to slide is provided between the left and right sides of the support frame. A square tube is fixedly installed at the bottom end of the first slider. A first hydraulic cylinder is fixedly installed on the bottom wall of the square tube. A rubber suction cup is fixedly installed at the bottom end of the piston rod of the first hydraulic cylinder. A limit shell is fixedly installed on the bottom wall of the support frame.

[0004] In the existing technology, when attaching the LCD panel and the optical material panel, if there is a positioning error, the attachment of the LCD panel and the optical material panel will be offset, but it cannot be detected in time. As a result, the attachment of a batch of LCD panels will be unusable. It can only be discovered in the subsequent testing process, and then the attachment mechanism needs to be returned for adjustment and repair, which is time-consuming and laborious. Utility Model Content

[0005] In the existing technology, when attaching the LCD panel and the optical material panel, if there is a positioning error, the attachment of the LCD panel and the optical material panel will be offset, but it cannot be detected in time. As a result, the attachment of a batch of LCD panels will be unusable. It can only be discovered in the subsequent inspection process, and then the attachment mechanism needs to be returned for adjustment and repair, which is time-consuming and laborious. At the same time, the existing attachment mechanism is inconvenient when placing the optical material panel because the placement plate is located at the bottom of the suction cup assembly.

[0006] In view of this, the present invention aims to provide a liquid crystal panel attaching mechanism. In this invention, the attaching mechanism includes a main body and a placement frame and a suction cup assembly disposed on the main body. The placement frame is used to place an optical material panel and is located at the bottom of the suction cup assembly. The suction cup assembly is used to adsorb the liquid crystal panel. The main body is provided with a first driving member for controlling the lifting and lowering of the suction cup assembly. The attaching mechanism also includes a detection unit; the detection unit includes a calculation module and several detection supports evenly arranged within the placement frame.

[0007] Each of the aforementioned detection supports includes a support block, a spring, and a pressure sensor; the pressure sensor is installed inside the placement frame, the support block is located above the pressure sensor to support the optical material panel, and the spring is provided between the pressure sensor and the support block;

[0008] Each of the pressure sensors is connected to the computing module, which is used to obtain the pressure values ​​of each pressure sensor and determine whether the bonding between the optical material panel and the liquid crystal panel is accurate based on the pressure values.

[0009] The specific steps of the calculation module to determine the accuracy of the bonding between the optical material panel and the LCD panel based on the pressure values ​​are as follows: Before bonding begins, the initial pressure values ​​of all pressure sensors are set to zero. After the optical material panel is placed, the pressure values ​​of the pressure sensors located at the bottom of the optical material panel increase under its weight. Each pressure sensor transmits information to the calculation module, which obtains the location of the pressure sensor with the changed pressure value (the pressure sensors can be numbered) and generates the first area information, i.e., the area information of the photovoltaic material panel. Then, the LCD panel is attracted by the suction cup assembly and lowered to bond with the optical material panel. When the LCD panel reaches its limit position, the calculation module again obtains the location of the pressure sensor with the changed pressure value to obtain the second area information (because the downward pressure of the LCD panel causes pressure changes in the pressure sensors). The first area information and the second area information are then compared. If they are the same, it means that the pressure sensors subjected to the two forces are the same, indicating that the LCD panel did not shift and press against other pressure sensors during the downward pressure process. This indicates that the LCD panel is completely pressed onto the photovoltaic material panel, indicating accurate bonding.

[0010] Furthermore, a support plane layer is provided on the upper end of the support block.

[0011] Furthermore, the pressure sensor is mounted on a mounting bracket, the bottom of which is provided with a threaded post, and the placement frame is provided with a threaded groove that mates with the threaded post, allowing the threaded post to be screwed in and tightened.

[0012] Furthermore, the main body is also provided with a moving component for controlling the movement of the placement frame. The moving component includes a moving frame and a second driving member. The main body is provided with a first slide rail. The moving frame moves on the first slide rail. The second driving member is connected to the moving frame and drives the moving frame to move on the first slide rail.

[0013] The movable frame is provided with a second slide rail and a third driving component. The placement frame is disposed on the upper end of the movable frame and moves on the second slide rail. The second slide rail is perpendicular to the first slide rail. The third driving component is connected to the placement frame and drives the placement frame to move on the second slide rail.

[0014] Furthermore, an alarm unit is also provided on the main body, which is activated when it is determined that the bonding between the optical material panel and the liquid crystal panel is inaccurate.

[0015] The liquid crystal panel bonding mechanism disclosed in this utility model, through the setting of the detection unit, can monitor the pressure information of each pressure sensor in real time during the bonding process, determine whether the bonding of the liquid crystal panel and the optical material panel is accurate, and can detect phenomena such as bonding offset in time, so as to repair and adjust the bonding mechanism in time and avoid continuing the bonding work when the bonding mechanism is not accurately positioned.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0019] Figure 2 This is a side view of one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the placement frame in one embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the detection support member in one embodiment of the present invention;

[0022] Figure 5 A flowchart illustrating the decision-making process for the calculation module.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Main body; 2. Suction cup assembly; 3. Placement frame; 4. Detection support; 41. Support block; 42. Spring; 43. Pressure sensor; 44. Support plane layer; 5. Moving frame; 6. First slide rail; 7. Second slide rail. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. "Fixed" or "fixed connection" generally refers to common mechanical connection methods, such as threaded connections, welding, or bonding.

[0028] In the existing technology, when attaching the LCD panel and the optical material panel, if there is a positioning error, the attachment of the LCD panel and the optical material panel will be offset, but it cannot be detected in time. As a result, the attachment of a batch of LCD panels will be unusable. It can only be discovered in the subsequent inspection process, and then the attachment mechanism needs to be returned for adjustment and repair, which is time-consuming and laborious. At the same time, the existing attachment mechanism is inconvenient when placing the optical material panel because the placement plate is located at the bottom of the suction cup assembly.

[0029] This utility model provides a liquid crystal panel attaching mechanism, such as Figure 1 and Figure 2As shown, in this embodiment, the attachment mechanism includes a main body 1 and a placement frame 3 and a suction cup assembly 2 disposed on the main body 1. The placement frame 3 is used to place the optical material panel and is located at the bottom of the suction cup assembly 2. The suction cup assembly 2 is used to adsorb the liquid crystal panel. A first driving member is provided on the main body 1 to control the lifting and lowering of the suction cup assembly 2. The first driving member is configured as a motor assembly and a chain transmission mechanism. The first driving member is used to drive the liquid crystal panel to descend and attach to the optical material panel after the suction cup assembly 2 adsorbs the liquid crystal panel, so as to realize the attachment work.

[0030] like Figure 3 As shown, the attachment mechanism in this embodiment also includes a detection unit; the detection unit includes a calculation module and several detection supports 4 evenly arranged in the placement frame 3; each detection support 4 includes a support block 41, a spring 42 and a pressure sensor 43; the pressure sensor 43 is installed in the placement frame 3, the support block 41 is located above the pressure sensor 43 to support the optical material panel, and a spring 42 is provided between the pressure sensor 43 and the support block 41, with the two ends of the spring 42 connected to the upper end of the pressure sensor 43 and the bottom of the support block, respectively; each pressure sensor 43 is connected to the calculation module, which is used to obtain the pressure value of each pressure sensor 43 and determine whether the adhesion between the optical material panel and the liquid crystal panel is accurate based on the pressure value.

[0031] like Figure 5 As shown, the calculation module determines the accuracy of the bonding between the optical material panel and the liquid crystal panel based on the pressure values ​​as follows: Before bonding begins, the initial pressure values ​​of all pressure sensors 43 are set to zero. After the optical material panel is placed, the pressure values ​​of the pressure sensors 43 located at the bottom of the optical material panel increase under the weight of the optical material panel. Each pressure sensor 43 transmits information to the calculation module. The calculation module obtains the location of the pressure sensor 43 with the changed pressure value (the pressure sensors 43 can be numbered) and generates the first area information, i.e., the area information of the photovoltaic material panel. Then, the liquid crystal panel is adsorbed by the suction cup assembly 2 and driven to descend and bond with the optical material panel. When the liquid crystal panel descends to its limit position, the calculation module obtains the location of the pressure sensor 43 with the changed pressure value again to obtain the second area information (because the downward pressure of the liquid crystal panel will cause the pressure of the pressure sensor 43 to change). Then, the first area information and the second area information are compared. If they are the same, it means that the pressure sensor 43 subjected to force in the two instances is the same, which means that the liquid crystal panel did not shift and press against other pressure sensors 43 during the downward pressure process. This indicates that the liquid crystal panel is completely pressed onto the photovoltaic material panel, indicating accurate bonding.

[0032] To promptly alert staff to positioning malfunctions and prevent the production of substandard displays, an alarm unit is installed on the main body 1. The alarm unit is activated when it is determined that the bonding between the optical material panel and the liquid crystal panel is inaccurate. Specifically, the alarm unit is activated when the information in the first area and the information in the second area are different (in this embodiment, the difference between the information in the first area and the information in the second area means that there is a sensor in the second area that is not covered by the information in the first area, i.e., when the liquid crystal panel is pressed down, it presses on other areas outside the optical material panel). At this time, the alarm unit is activated. The alarm unit includes a buzzer and a flashing light. Through the dual prompts of sound and light, it reminds staff to discover and carry out maintenance in a timely manner.

[0033] It should be noted that in the manufacturing of LCD screens, in order to cover the edges of the LCD panel, protect the edges from damage, and ensure light uniformity, the size of the optical material panel is slightly larger than the effective area of ​​the LCD panel during the manufacturing of some displays. Therefore, based on this situation, it can be set to determine the attachment positioning accuracy when the first area information and the second area information are the same or when the dataset of the second area information (the dataset can be the sensor number information) is part of the dataset of the first area information (i.e., the second area information does not contain sensor information not covered by the first area information).

[0034] To protect the placed photovoltaic panels and ensure their flatness, such as Figure 4 As shown, a support plane layer 44 is provided on the upper end of the support block 41. The flexible support plane layer 44 is detachably installed on the surface of the support block 41 and can be removed and replaced individually after wear.

[0035] To improve the ease of installation of the pressure sensor 43 and facilitate subsequent maintenance, the pressure sensor 43 is mounted on a mounting bracket (not shown in the figure). A threaded post is fixedly connected to the bottom of the mounting bracket, and a threaded groove is provided at the upper end of the placement frame 3. The threaded groove and the threaded post cooperate to allow the threaded post to be screwed in and tightened. The installation and removal of the pressure sensor 43 can be achieved directly by rotating the mounting bracket.

[0036] To facilitate the loading and position adjustment of optical material panels, a moving component is provided on the main body 1 to control the movement of the placement frame 3. The moving component includes a moving frame 5 and a second driving component. The main body 1 is provided with a first slide rail 6, and the bottom of the moving frame 5 is provided with a corresponding sliding groove to allow the moving frame 5 to move on the first slide rail 6. The second driving component is connected to the moving frame 5 to drive the moving frame 5 to move on the first slide rail 6. The moving frame 5 is provided with a second slide rail 7 and a third driving component. The bottom of the placement frame 3 is provided with a sliding groove to allow the placement frame 3 to move on the second slide rail 7 at the upper end of the moving frame 5. The second slide rail 7 is perpendicular to the first slide rail 6. The third driving component is connected to the placement frame 3 to drive the placement frame 3 to move on the second slide rail 7. When loading the glossy material panel, the placement frame 3 can be moved to the outside for loading by controlling the second driving component, which is convenient for placement. At the same time, the position of the placement frame 3 can be easily adjusted by the cooperation of the third driving component and the second driving component, that is, the position of the optical material panel can be adjusted so that it can be adapted to the attachment of LCD panels of different sizes.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid crystal panel attaching mechanism, comprising a main body (1) and a placement frame (3) and a suction cup assembly (2) disposed on the main body (1), wherein the placement frame (3) is used to place an optical material panel and the placement frame (3) is located at the bottom of the suction cup assembly (2), the suction cup assembly (2) is used to adsorb the liquid crystal panel, and a first driving member for controlling the lifting and lowering of the suction cup assembly (2) is disposed on the main body (1), characterized in that, The attachment mechanism also includes a detection unit; The detection unit includes a calculation module and several detection support components (4) evenly arranged in the placement frame (3); Each of the aforementioned detection support components (4) includes a support block (41), a spring (42), and a pressure sensor (43); the pressure sensor (43) is installed inside the placement frame (3), the support block (41) is located above the pressure sensor (43) to support the optical material panel, and the spring (42) is provided between the pressure sensor (43) and the support block (41); Each of the pressure sensors (43) is connected to the calculation module. The calculation module is used to obtain the pressure value of each pressure sensor (43) and determine whether the bonding between the optical material panel and the liquid crystal panel is accurate based on the pressure value.

2. The liquid crystal panel attaching mechanism according to claim 1, characterized in that, The upper end of the support block (41) is provided with a support plane layer (44).

3. The liquid crystal panel attaching mechanism according to claim 1, characterized in that, The pressure sensor (43) is mounted on a mounting bracket. The bottom of the mounting bracket is provided with a threaded post. The placement frame (3) is provided with a threaded groove that mates with the threaded post. The threaded groove is used for the threaded post to be screwed in and tightened.

4. The liquid crystal panel attaching mechanism according to any one of claims 1-3, characterized in that, The main body (1) is also provided with a moving component for controlling the movement of the placement frame (3). The moving component includes a moving frame (5) and a second driving member. The main body (1) is provided with a first slide rail (6). The moving frame (5) moves on the first slide rail (6). The second driving member is connected to the moving frame (5) to drive the moving frame (5) to move on the first slide rail (6). The movable frame (5) is provided with a second slide rail (7) and a third driving member. The placement frame (3) is located on the upper end of the movable frame (5) and moves on the second slide rail (7). The second slide rail (7) is perpendicular to the first slide rail (6). The third driving member is connected to the placement frame (3) and drives the placement frame (3) to move on the second slide rail (7).

5. The liquid crystal panel attaching mechanism according to any one of claims 1-3, characterized in that, An alarm unit is also provided on the main body (1), which is activated when it is determined that the bonding between the optical material panel and the liquid crystal panel is inaccurate.

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