Adjustable pressing apparatus for liquid crystal display assembly
Patent Information
- Application Number
- CN202522617373.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-12-10
AI Technical Summary
[0005]本实用新型提供了用于液晶显示屏组装的可调式压合设备，解决了现有技术中存在现有压合设备更换显示屏尺寸时需逐一调整定位挡块，效率低且易产生中心偏差的缺点
本实用新型通过中心驱动转盘联动四个弧形连接杆，实现四个L型承载块的同步位移，只需启动驱动电机控制转盘旋转，即可完成范围内定位尺寸的快速调整，无需逐一操作定位部件，显著缩短了机种更换的时间成本，有利于提升生产效率。
Smart Images
Figure CN224789034U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid crystal display assembly technology, and in particular to an adjustable pressing device for liquid crystal display assembly. Background Technology
[0002] In the process of assembling LCD screens, the positioning accuracy before the lamination process directly affects the quality of the final product. Currently, most lamination equipment used for LCD screen assembly is equipped with independent positioning blocks to limit the position of the screen.
[0003] In actual production, if it is necessary to replace the display screen with a different size, the operator has to manually adjust the position of the four positioning blocks one by one. This adjustment method is not only time-consuming and inefficient, but also prone to asynchronous displacement of the four blocks due to human error. This can lead to a deviation between the positioning center of the display screen and the center of the pressing head. Once a center deviation occurs, subsequent pressing operations may cause defects such as damage to the edge of the display screen and loose bonding, increasing the product scrap rate and reducing the overall production progress.
[0004] To address the aforementioned problems, this utility model document proposes an adjustable pressing device for assembling liquid crystal displays. Utility Model Content
[0005] This invention provides an adjustable pressing device for assembling LCD screens, which solves the shortcomings of existing pressing devices that require adjusting positioning blocks one by one when changing the size of the screen, resulting in low efficiency and easy center deviation.
[0006] This utility model provides the following technical solution: Adjustable pressing equipment for assembling LCD displays includes: The base has sliding seats at each of the four corners of its top, and a rotatable turntable at the center of its top. Each sliding seat has a corresponding L-shaped support block fixedly mounted on its top, and the L-shaped support block is connected to the turntable by a corresponding arc-shaped connecting rod.
[0007] In one possible design, four I-shaped guide rails are fixedly arranged in a circular array on the top of the base, and the sliding seat is slidably connected to the corresponding I-shaped guide rails through a concave groove provided at the bottom.
[0008] In one possible design, a transmission rod is rotatably mounted at the center of the top of the base via a bearing. The top end of the transmission rod is fixedly connected to the center of the bottom of the turntable. A drive motor for driving the transmission rod to rotate is fixedly mounted at the center of the bottom of the base. The output shaft of the drive motor passes through the top of the base and is fixedly connected to the bottom end of the transmission rod.
[0009] In one possible design, one end of the arc-shaped connecting rod is provided with a rotating hole I, the bottom of the L-shaped bearing block is fixedly provided with a fixing pin I that is rotatably connected to the corresponding rotating hole I, the other end of the arc-shaped connecting rod is provided with a rotating hole II, the bottom of the turntable is fixedly provided with a fixing pin II for rotatably connected to the corresponding rotating hole II, and the four fixing pins II are arranged in a circular array.
[0010] In one possible design, the top of the turntable is fixedly provided with multiple buffer ridges in a circular array.
[0011] In one possible design, support legs are fixedly installed at the four corners of the base, and reinforcing plates are fixedly installed along the lower edges of both sides of the support legs. A circular hole for bolts to pass through is provided in the center of the reinforcing plate.
[0012] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.
[0013] The working principle and usage process of this technical solution are as follows: During use, place the equipment on a flat working area and stably erect it using the support legs at the four corners of the base. Secure the equipment to the workbench using the round holes on the reinforcing plates along the lower edges of the support legs and bolts to prevent shaking during pressing and positioning, ensuring operational stability. Then, based on the actual size of the LCD screen to be assembled, start the drive motor in the center of the base. The output shaft of the drive motor passes through the top of the base and is fixedly connected to the bottom end of a transmission rod rotatably mounted in the center of the base via bearings. Therefore, after the motor starts, it directly drives the transmission rod to rotate. The top of the transmission rod is fixed to the center of the bottom of the central turntable, thus driving the turntable to rotate synchronously. As the turntable rotates, the four fixed pins II arranged in a circular array at its bottom also rotate in a circular motion. The movement is achieved because one end of each of the four arc-shaped connecting rods is rotatably connected to the corresponding fixing pin II through the rotating hole II, and the other end is rotatably connected to the fixing pin I at the bottom of the L-shaped bearing block through the rotating hole I. The L-shaped bearing block is fixed on the top of the sliding seat, and the sliding seat is slidably connected to the four I-shaped guide rails arranged in a ring array on the top of the base through the bottom concave sliding groove. Therefore, the circular motion of the fixing pin II is converted into the linear sliding of the sliding seat along the I-shaped guide rail through the arc-shaped connecting rods. When the turntable rotates clockwise, the four arc-shaped connecting rods synchronously pull the corresponding L-shaped bearing block and the sliding seat towards the center along the I-shaped guide rail. When the turntable rotates counterclockwise, the four arc-shaped connecting rods synchronously push the L-shaped bearing block and the sliding seat to spread outward, ultimately achieving the synchronous displacement of the four L-shaped corner positioning blocks. After the four L-shaped support blocks are adjusted to match the current screen size, the drive motor is turned off, the positioning mechanism is locked, and the LCD screen is placed on top of the turntable. The four L-shaped support blocks limit the screen from the four opposite corners. At the same time, multiple buffer ridges arranged in a ring array on the top of the turntable support the bottom of the screen, preventing the screen from directly contacting the turntable and causing wear, while also enhancing the stability after placement. After the screen is positioned, the pressing mechanism (equipment component, not detailed in the claims, usually a pneumatic suction cup adsorbs the screen for pressing) can be started to perform subsequent assembly and pressing operations on the screen. Since the four L-shaped support blocks are always synchronously displaced during the positioning process, the geometric center of the screen always coincides with the center of the pressing head. There is no need to adjust the position of the pressing head, and the pressing process can be directly connected. When it is necessary to replace the LCD screen of other sizes within the range for assembly, simply start the drive motor again and control the rotation direction and angle of the turntable to achieve synchronous adjustment of the four L-shaped support blocks, quickly adapting to the new size screen without adjusting the positioning components one by one.
[0014] This utility model has the following beneficial effects: This invention achieves synchronous displacement of four L-shaped bearing blocks by linking a central drive turntable with four arc-shaped connecting rods. Simply start the drive motor to control the turntable rotation to quickly adjust the positioning dimensions within the range. There is no need to operate the positioning components one by one, which significantly reduces the time cost of machine changeover and helps improve production efficiency.
[0015] This invention, through the coordinated structure of the linkage mechanism and the central turntable, ensures that the four L-shaped bearing blocks always move synchronously toward the center or spread outward along the diagonal. Regardless of the size adjusted within the range, the geometric center of the display screen to be positioned always coincides with the center of the pressure head. This structurally avoids the occurrence of center deviation, effectively improves the accuracy of LCD screen assembly and pressing, and reduces the product defect rate. Attached Figure Description
[0016] Figure 1 A three-dimensional structural schematic diagram of the adjustable pressing device for assembling a liquid crystal display screen provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the adjustable pressing device for assembling a liquid crystal display screen provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the disassembly structure of the sliding seat of the adjustable pressing device for assembling a liquid crystal display screen provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the separation structure of the turntable and the arc-shaped connecting rod of the adjustable pressing device for assembling a liquid crystal display screen provided in an embodiment of the present invention.
[0017] Reference numerals in the attached drawings: 1. Base; 2. I-shaped guide rail; 3. Sliding seat; 4. Concave groove; 5. L-shaped bearing block; 6. Transmission rod; 7. Turntable; 8. Arc-shaped connecting rod; 9. Fixing pin I; 10. Rotary hole I; 11. Fixing pin II; 12. Rotary hole II; 13. Buffer ridge; 14. Support leg; 15. Reinforcing plate; 16. Round hole; 17. Drive motor. Detailed Implementation
[0018] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0019] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0020] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.
[0021] In one embodiment:
[0022] Please refer to Figure 1-4 Adjustable pressing equipment, including: Base 1 is made of high-strength aluminum alloy to ensure overall support strength while reducing the weight of the equipment. A mounting hole is pre-drilled at the center of the top of base 1, through which a bearing is inserted. The outer ring of the bearing is interference-fitted with the inner wall of the mounting hole. Transmission rod 6 passes through the inner ring of the bearing and is interference-fitted with it, allowing for rotational mounting of transmission rod 6 on the top of base 1. The top of transmission rod 6 is fixedly connected to the center of the bottom of turntable 7 by bolts. Turntable 7 is made of wear-resistant cast iron with a precision-ground surface to reduce frictional wear when mating with other components. The center of the bottom of base 1 corresponds to the transmission rod 6. The position of the moving rod 6 is fixed to the drive motor 17 by bolts. The drive motor 17 is a servo motor. Its output shaft passes through the pre-set through hole at the top of the base 1 and is fixedly connected to the bottom of the transmission rod 6 by a coupling to ensure that the drive motor 17 can stably drive the transmission rod 6 to rotate after starting. The wiring terminals of the drive motor 17 are connected to the driver in the equipment control cabinet through wires. The driver is connected to the controller signal. The controller is a PLC controller. The operator can send control commands through the buttons or touch screen on the control cabinet to realize the start and stop of the drive motor 17 and the adjustment of the rotation direction and angle.
[0023] Four I-shaped guide rails 2 are arranged in a circular array on the top of the base 1. The I-shaped guide rails 2 are fixed in the pre-set mounting grooves on the top of the base 1 by bolts. The four I-shaped guide rails 2 correspond to the four corners of the top of the base 1, and their extension directions all point to the center of the base 1. The bottom of the sliding seat 3 is machined with a concave groove 4. The size of the concave groove 4 matches the I-shaped guide rail 2. The sliding seat 3 is fitted onto the I-shaped guide rail 2 through the concave groove 4, realizing the sliding connection of the sliding seat 3 along the I-shaped guide rail 2. The top of the sliding seat 3 is fixed with an L-shaped support block 5 by bolts. The corners of the L-shaped support block 5 are chamfered to avoid scratching the LCD screen to be positioned. The bottom of the L-shaped support block 5... Weld fixing pin I9. The outer diameter of fixing pin I9 matches the inner diameter of the rotating hole I10 at one end of the arc-shaped connecting rod 8. One end of the arc-shaped connecting rod 8 is sleeved on fixing pin I9 through rotating hole I10, realizing the rotational connection between the arc-shaped connecting rod 8 and the L-shaped bearing block 5. Four fixing pins II11 are welded in a ring array at the bottom of the turntable 7. The positions of fixing pins II11 correspond one-to-one with the four L-shaped bearing blocks 5. The rotating hole II12 at the other end of the arc-shaped connecting rod 8 is sleeved on fixing pins II11, completing the rotational connection between the arc-shaped connecting rod 8 and the turntable 7. During assembly, it is necessary to ensure that there is no jamming in the rotational connection at both ends of the arc-shaped connecting rod 8. If there is jamming, lubricating oil should be applied for adjustment.
[0024] Multiple buffer protrusions 13 are fixed in a ring array on the top of the turntable 7. The buffer protrusions 13 are made of silicone and are fixed to the top of the turntable 7 by adhesive bonding. They can not only support the bottom of the LCD screen, but also prevent the screen from directly contacting the turntable 7 and causing wear. The mating parts of the transmission rod 6 and the bearing, the mating parts of the fixing pin I9 and the rotating hole I10, the mating parts of the fixing pin II11 and the rotating hole II12, and the mating surfaces of the inner groove 4 of the sliding seat 3 and the I-shaped guide rail 2 are all coated with lithium-based grease to reduce friction loss during the movement of the parts, extend the service life of the equipment, and the lubrication should be checked regularly and the lubricating oil should be replenished or replaced in time.
[0025] When the equipment is actually running, the operator first turns on the power supply through the control cabinet. According to the size of the LCD screen to be assembled, the operator sets the rotation direction and angle parameters of the drive motor 17 on the controller. The controller sends a signal to the driver, which drives the drive motor 17 to start. The drive motor 17 drives the transmission rod 6 to rotate through the coupling. The transmission rod 6 drives the turntable 7 to rotate synchronously. The fixing pin II 11 at the bottom of the turntable 7 moves in a circle with the turntable 7. The circular motion is converted into the linear sliding of the sliding seat 3 along the I-shaped guide rail 2 through the arc-shaped connecting rod 8. When the turntable 7 rotates clockwise, the arc-shaped connecting rod 8 pulls the L-shaped bearing block 5 and the sliding seat 3 to move towards the center along the I-shaped guide rail 2. When the turntable 7 rotates counterclockwise, the arc-shaped connecting rod 8 pushes the L-shaped bearing block 5 and the sliding seat 3 to spread outward until the four L-shaped bearing blocks 5 are adjusted to the position that matches the size of the LCD screen to be positioned within the range. The controller then controls the drive motor 17 to stop running, and the positioning mechanism is locked. The LCD screen is placed on top of the turntable 7, and four L-shaped support blocks 5 limit the screen from the four opposite corners. The buffer strips 13 support the bottom of the screen to ensure stable placement. After the screen is positioned, the matching pressing mechanism is activated. This pressing mechanism is usually a pneumatic suction cup structure. The pneumatic suction cup is connected to the air pump through an air pipe. The air pump is connected to the equipment control cabinet via a signal. The operator starts the air pump through the control cabinet. After the pneumatic suction cup adsorbs the screen, it moves the screen down to complete the assembly and pressing operation with other components. Since the four L-shaped support blocks 5 always move synchronously during the positioning process, the geometric center of the screen always coincides with the center of the pressing head. There is no need to adjust the position of the pressing head. When it is necessary to replace the LCD screen of other sizes within the range, it is only necessary to reset the parameters on the controller and start the drive motor 17 to realize the synchronous adjustment of the four L-shaped support blocks 5 and quickly adapt to the new size screen.
[0026] This application can be used for liquid crystal display assembly, or for other fields applicable to this application.
[0027] In another embodiment:
[0028] An adjustable pressing device for assembling liquid crystal displays (LCDs) is used in the field of LCD assembly. The structure of this embodiment is basically the same as that of the aforementioned embodiments, except that: Please refer to Figure 1 The support legs 14 are fixed to the four corners of the base 1 by welding. The support legs 14 are made of stainless steel, which is corrosion resistant and has a strong load-bearing capacity. Reinforcing plates 15 are welded to the lower edges of both sides of the support legs 14. The reinforcing plates 15 have a pre-set round hole 16 in the center. During assembly, the equipment is placed on a flat workbench, and bolts are inserted through the round hole 16 to lock the entire equipment onto the workbench, so as to avoid the equipment shaking during subsequent positioning and pressing, and ensure operational stability.
[0029] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 17 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.
[0030] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.
[0031] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. An adjustable pressing device for assembling liquid crystal displays, characterized in that, include: The base (1) has sliding seats (3) at the four corners of the top of the base (1), and a rotatable turntable (7) is provided at the center of the top of the base (1). A corresponding L-shaped bearing block (5) is fixedly provided on the top of the sliding seat (3). The L-shaped bearing block (5) and the turntable (7) are connected by a corresponding arc-shaped connecting rod (8).
2. The adjustable pressing device for assembling liquid crystal displays according to claim 1, characterized in that, The top of the base (1) is fixedly provided with four I-shaped guide rails (2) in a ring array, and the sliding seat (3) is slidably connected to the corresponding I-shaped guide rail (2) through the concave sliding groove (4) provided at the bottom.
3. The adjustable pressing device for assembling liquid crystal displays according to claim 1, characterized in that, A transmission rod (6) is rotatably mounted on the center of the top of the base (1) via a bearing. The top end of the transmission rod (6) is fixedly connected to the center of the bottom of the turntable (7). A drive motor (17) for driving the transmission rod (6) to rotate is fixedly mounted on the center of the bottom of the base (1). The output shaft of the drive motor (17) passes through the top of the base (1) and is fixedly connected to the bottom end of the transmission rod (6).
4. The adjustable pressing device for assembling a liquid crystal display screen according to claim 1, characterized in that, One end of the arc-shaped connecting rod (8) is provided with a rotating hole I (10), the bottom of the L-shaped bearing block (5) is fixedly provided with a fixing pin I (9) that is rotatably connected to the corresponding rotating hole I (10), the other end of the arc-shaped connecting rod (8) is provided with a rotating hole II (12), the bottom of the turntable (7) is fixedly provided with a fixing pin II (11) for rotatably connecting to the corresponding rotating hole II (12), and the four fixing pins II (11) are arranged in a ring array.
5. The adjustable pressing device for assembling a liquid crystal display screen according to claim 1, characterized in that, The top of the turntable (7) is fixedly provided with multiple buffer ridges (13) in a ring array.
6. The adjustable pressing device for assembling a liquid crystal display screen according to claim 1, characterized in that, Support legs (14) are fixedly installed at the four corners of the bottom of the base (1), and reinforcing plates (15) are fixedly installed on the lower edges of both sides of the support legs (14). A round hole (16) for bolts to pass through is provided in the center of the reinforcing plate (15).