Liquid crystal panel positioning mechanism and cutting equipment

Abstract

The utility model relates to the technical field of display screen production equipment, and provides a liquid crystal display panel positioning mechanism which is arranged on cutting equipment and comprises a positioning frame body and a horizontal detection mechanism, four supporting pipes are arranged on the positioning frame body, a suction cup is arranged at the top of each supporting pipe, and the horizontal detection mechanism is arranged on the positioning frame body. The bottom of the supporting pipe is connected with a vacuum pump through a pipeline; the horizontal detection mechanism comprises a detection frame, a lifting mechanism and a plurality of pressure sensors; the lifting mechanism is connected with the detection frame to control lifting of the detection frame; the pressure sensors are symmetrically arranged at the top of the detection frame; the lifting mechanism can drive the detection frame to rise until the pressure sensor is in contact with the bottom of the liquid crystal panel; according to the utility model, the state of the liquid crystal panel can be positioned and detected after the sucker adsorbs and fixes the liquid crystal panel, and the horizontal positioning accuracy of the liquid crystal panel is ensured.

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 positioning mechanism and cutting equipment. Background Technology

[0002] In the manufacturing process of LCD screens, the positioning mechanism is particularly important, as it ensures the precise alignment of display components such as glass substrates, polarizers, and backlight modules. In the cutting of LCD panels, the precise positioning of the LCD panels directly affects the quality and performance of the display screen.

[0003] CN221695422U discloses an LED display screen frame cutting device, including a processing table and an auxiliary mechanism. The processing table has a processing mechanism on its front side, and the auxiliary mechanism includes a movable plate. The processing table has a movable groove on its front side, and the movable plate is rotatably mounted on the inner wall of the movable groove. The outer wall of the movable plate has symmetrically arranged first inclined surfaces on its sides, and an operating mechanism is provided on one side of the movable plate. The symmetrically arranged first inclined surfaces make the front side of the movable plate linear, which improves the accuracy of cutting the display screen frame strips.

[0004] CN215509515U discloses a display screen cutting device, including a worktable for placing the display screen, a cutter arranged above the worktable, and a lifting and positioning assembly arranged on the worktable. The lifting and positioning assembly includes a lifting mechanism arranged at the center of the worktable for supporting the display screen, and a positioning mechanism arranged around the worktable for positioning the lifted display screen.

[0005] Currently, when cutting LCD panels, it is necessary to horizontally position the LCD panel to be cut and then use a suction mechanism to suction the LCD panel before cutting. However, after being suctioned by the suction mechanism, the LCD panel may tilt, resulting in inaccurate positioning and affecting subsequent cutting work. The above phenomenon is prone to occur when the suction cup is aging or the suction is uneven. Utility Model Content

[0006] Currently, when cutting LCD panels, it is necessary to horizontally position the LCD panel to be cut and then use a suction mechanism to suction the LCD panel before cutting. However, after being suctioned by the suction mechanism, the LCD panel may tilt, resulting in inaccurate positioning and affecting subsequent cutting work. The above phenomenon is prone to occur when the suction cup is aging or the suction is uneven.

[0007] In view of this, the present invention aims to provide a liquid crystal panel positioning mechanism, which is installed on a cutting device. The positioning mechanism includes a positioning frame and a horizontal detection mechanism installed on the positioning frame. The positioning frame is fixed inside the cutting device and is located at the bottom of the cutting mechanism in the cutting device to support the liquid crystal panel. The positioning frame is provided with four support tubes, each of which has a suction cup at its top. The bottom of each support tube is connected to a vacuum pump through a pipe.

[0008] The horizontal detection mechanism includes a detection frame, a lifting mechanism, and multiple pressure sensors. The lifting mechanism is mounted on the positioning frame and is connected to the detection frame to control the lifting of the detection frame. The pressure sensors are located on the top of the detection frame, and multiple pressure sensors are symmetrically arranged on the top of the detection frame. The lifting mechanism can drive the detection frame to rise until the pressure sensors contact the bottom of the LCD panel.

[0009] Furthermore, the level detection mechanism also includes a comparison unit, which is capable of acquiring the pressure values ​​of each pressure sensor and comparing the pressure values.

[0010] Furthermore, the lifting mechanism includes a fixed frame, a lifting frame, a first lifting cylinder, and a second lifting cylinder; the fixed frame is fixed on the positioning frame, the lifting frame is located at the upper end of the fixed frame, and the detection frame is located at the upper end of the lifting frame;

[0011] The first lifting cylinder is mounted on the fixed frame and connected to the lifting frame to control the lifting of the lifting frame. The second lifting cylinder is mounted on the lifting frame and connected to the detection frame to control the lifting of the detection frame.

[0012] Furthermore, each of the four corners of the fixed frame is provided with a first lifting cylinder, and the four first lifting cylinders work synchronously; each of the four corners of the lifting frame is provided with a second lifting cylinder, and the four second lifting cylinders work synchronously.

[0013] This utility model also discloses a cutting device, including a cutting machine body, a cutting mechanism, and the aforementioned positioning mechanism.

[0014] Furthermore, the cutting equipment also includes a dust removal mechanism, which includes an adsorption channel, a first fan, and a filter cover; the adsorption channel is formed in the middle of the detection frame, the bottom of the adsorption channel is connected to the first fan, and the filter cover is disposed inside the adsorption channel.

[0015] Furthermore, the filter cover is hemispherical and there are multiple filter covers. The filter covers are spaced apart to form a trough. A collection hole communicating with the trough is provided on one side of the trough and the collection hole is connected to the second fan.

[0016] The liquid crystal panel positioning mechanism disclosed in this utility model, through the setting of a horizontal detection mechanism, after the liquid crystal panel is adsorbed and fixed by a suction cup, a lifting mechanism drives the detection frame to approach the bottom of the liquid crystal display screen, causing multiple pressure sensors to contact the bottom of the liquid crystal display screen and apply an upward force. This not only detects whether the adsorption of the liquid crystal panel by the suction cup is stable, but also detects the horizontal level of the liquid crystal panel after adsorption and fixing by comparing the pressure values ​​of multiple pressure sensors. It can promptly obtain the horizontal state of the liquid crystal panel after fixing, which is convenient for further horizontal positioning adjustment before cutting, ensuring the positioning accuracy of the liquid crystal panel before cutting, improving cutting accuracy, and enabling timely detection and repair of faults.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] 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:

[0019] Figure 1 This is a schematic diagram of the structure in one embodiment of the present invention;

[0020] Figure 2 This is a side view of the positioning mechanism in one embodiment of the present invention;

[0021] Figure 3 This is a top view schematic diagram of the horizontal detection mechanism in one embodiment of the present utility model;

[0022] Figure 4 This is a partial perspective view of the horizontal detection mechanism in one embodiment of the present invention.

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

[0024] 1. Positioning frame; 2. Support tube; 3. Suction cup; 4. Detection frame; 5. Pressure sensor; 6. Fixing frame; 7. Lifting frame; 8. First lifting cylinder; 9. Second lifting cylinder; 10. Adsorption channel; 11. Filter cover; 12. Tank; 13. Collection hole. 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] Currently, when cutting LCD panels, the LCD panel to be cut needs to be horizontally positioned and then adsorbed by a suction mechanism before cutting. However, after being adsorbed by the suction mechanism, the LCD panel may tilt, resulting in inaccurate positioning and affecting subsequent cutting work. The above phenomenon is prone to occur when the suction cup is aging or the adsorption is uneven. In addition, in existing cutting equipment, the dust removal equipment often needs to be set up separately, which occupies a large area and has poor dust removal effect.

[0029] This utility model provides a liquid crystal panel positioning mechanism, such as Figure 1 and Figure 2As shown, in this embodiment, the LCD panel positioning mechanism is located on the cutting equipment. The positioning mechanism includes a positioning frame 1 and a horizontal detection mechanism on the positioning frame 1. The positioning frame 1 is fixedly installed inside the cutting equipment and is located at the bottom of the cutting mechanism in the cutting equipment. The positioning frame 1 can horizontally support the LCD panel so that the cutting mechanism can cut the LCD panel at the bottom. Four support tubes 2 are provided on the positioning frame 1. The four support tubes 2 are vertically fixed at the four corners of the positioning frame 1. The four support tubes 2 are symmetrically arranged. Each support tube 2 has a suction cup 3 at its top. The LCD panel is placed on the four suction cups 3. The bottom of the support tube 2 is connected to a vacuum pump through a pipeline to provide suction force to the suction cups 3, so that the suction cups 3 can stably adsorb the LCD panel. The vacuum pump gives the same suction force to the four suction cups 3 to ensure the uniformity of adsorption of the LCD panel as much as possible.

[0030] The horizontal detection mechanism includes a detection frame 4, a lifting mechanism, and four pressure sensors 5. The lifting mechanism is installed on the upper end of the positioning frame 1, and the detection frame 4 is located on the upper end of the lifting mechanism. The lifting mechanism is connected to the detection frame 4 and controls the lifting and lowering of the detection frame 4. The pressure sensors 5 are installed on the top of the detection frame 4, and the four pressure sensors 5 are respectively installed at the four corners of the top of the detection frame 4. The four pressure sensors 5 are symmetrically arranged on the top of the detection frame 4. The lifting mechanism can drive the detection frame 4 to rise. When the detection frame 4 rises, the four pressure sensors 5 can move to contact the bottom of the LCD panel and apply an upward force to the LCD panel. The horizontal detection mechanism also includes a comparison unit. The four pressure sensors 5 send pressure values ​​to the comparison unit in real time. The comparison unit can obtain the pressure values ​​of each pressure sensor 5 and compare the pressure values. When the pressure values ​​of the four pressure sensors 5 are the same, it indicates that the LCD panel is in a horizontal state. When the pressure values ​​are different, it indicates that the LCD panel may be tilted and is not in a horizontal state, and timely adjustment and maintenance are required.

[0031] This invention, through the setting of a horizontal detection mechanism, after the LCD panel is adsorbed and fixed by the suction cup 3, uses a lifting mechanism to move the detection frame 4 close to the bottom of the LCD screen, causing multiple pressure sensors 5 to contact the bottom of the LCD screen and apply an upward force. This not only detects whether the adsorption of the LCD panel by the suction cup 3 is stable, but also detects the horizontality of the LCD panel after adsorption and fixation by comparing the pressure values ​​of multiple pressure sensors 5. It can promptly obtain the horizontal status of the LCD panel after fixation, which is convenient for further horizontal positioning adjustment before cutting, ensuring the positioning accuracy of the LCD panel before cutting, improving cutting accuracy, and enabling timely detection and repair of faults.

[0032] It should be noted that when the pressure value deviation is extremely small, it will not affect the horizontal state of the LCD panel. Therefore, a horizontal threshold is set. The comparison unit compares the pressure value of the pressure sensor 5, calculates the pressure difference when the pressure values ​​are different, and compares the pressure difference with the horizontal threshold. When the pressure difference is less than the horizontal threshold, it means that the horizontal state is not affected and no adjustment is required. When the pressure difference is greater than or equal to the horizontal threshold, it means that the LCD panel is tilted and the alarm system (including red light reminder and voice broadcast) is activated to remind the staff to inspect and adjust the vacuum pump, suction cup 3 and other structures.

[0033] To ensure the stability and accuracy of the lifting of detection frame 4, and to guarantee the stability of horizontal positioning detection; such as Figure 3 and Figure 4 As shown, the lifting mechanism is configured as a fixed frame 6, a lifting frame 7, a first lifting cylinder 8, and a second lifting cylinder 9. The fixed frame 6 is fixed to the upper end of the positioning frame 1, the lifting frame 7 is located above the fixed frame 6, and the lifting frame 7 is slidably connected to the fixed frame 6, with the inner wall of the lifting frame 7 fitting against the inner wall of the fixed frame 6. The detection frame 4 is located above the lifting frame 7, and the two are slidably connected, with the inner wall of the detection frame 4 fitting against the outer wall of the lifting frame 7. The first lifting cylinder 8 is installed outside the fixed frame 6, and its output end is connected to the bottom of the lifting frame 7, controlling the lifting of the lifting frame 7. The second lifting cylinder 9 is installed on the outer wall of the lifting frame 7, connected to the bottom of the detection frame 4, controlling the lifting of the detection frame 4. Through the dual lifting operation of the lifting frame 7 and the detection frame 4, multi-stage stable lifting operation can be achieved.

[0034] A first lifting cylinder 8 is installed at each of the four corners of the fixed frame 6, and the four first lifting cylinders 8 work synchronously, that is, they are controlled by a controller. A second lifting cylinder 9 is installed at each of the four corners of the lifting frame 7, and the four second lifting cylinders 9 work synchronously, that is, they are controlled by a controller. By controlling multiple lifting cylinders, the stability of the lifting can be guaranteed, and the tilting of the detection frame 4 can be avoided.

[0035] This embodiment also discloses a cutting device, including a cutting machine body, a cutting mechanism, and the aforementioned positioning mechanism; the cutting device also includes a dust removal mechanism, which includes an adsorption channel 10, a first fan, and a filter cover 11. The adsorption channel 10 is formed in the middle of the detection frame 4 and the lifting frame 7. The bottom of the adsorption channel 10 is connected to the first fan. The filter cover 11 is disposed in the adsorption channel 10 to filter the adsorbed dust. The filter cover 11 is installed in the fixed frame 6. Power is provided by the first fan to form a negative pressure in the adsorption channel 10, adsorbing the impurities generated during the cutting of the liquid crystal panel into the adsorption channel. Inside channel 10, impurities are filtered and left inside the fixed frame 6. The filter cover 11 is hemispherical so that the filtered impurities can slide off from both sides, avoiding the accumulation of impurities on the filter cover 11 and causing blockage. Multiple filter covers 11 are provided, with intervals between them, forming a trough 12 between the filter covers 11. Impurities are collected in the trough 12. A collection hole 13 communicating with the trough 12 is provided on one side of the trough 12. The collection hole 13 is connected to a second fan. The second fan acts as a power source to drive the impurities in the trough 12 to be drawn in and collected through the collection hole 13.

[0036] By setting up a dust removal mechanism, an adsorption channel 10 is formed by the detection frame 4 and the lifting frame 7, eliminating the need for the existing suction hood. A filter cover 11 is installed on the fixed frame 6, and a tank 12 for storing impurities is formed. The dust removal mechanism is fully integrated with the horizontal detection mechanism, reducing the space occupied by the dust removal mechanism.

[0037] When the cutting equipment of this utility model is working, the LCD panel is first placed on four suction cups 3. The vacuum pump is started to drive the suction cups 3 to adsorb and fix the LCD panel. After the adsorption is stable, the detection frame 4 and the lifting frame 7 are controlled to rise to the pressure sensor 5 to push the LCD panel upward, detect whether the adsorption of the LCD panel by the suction cups 3 is stable, and at the same time obtain the pressure value of each pressure sensor 5. Based on whether the pressure value of each pressure sensor 5 is the same, it is determined whether the adsorbed and fixed LCD panel is in a horizontal state. After confirming that the LCD panel is in a horizontal state, the detection frame 4 is controlled to descend, and the lifting frame 7 is not moved, so that the gap between the detection frame 4 and the LCD panel is set (to reserve cutting space). The cutting mechanism cuts the LCD panel. During cutting, the first fan is started to form a negative pressure in the adsorption channel 10. The impurities and dust generated during cutting enter the adsorption and are filtered by the filter cover 11. The impurities are left in the groove 12 of the fixing frame 6. When it is necessary to collect the impurities in the groove 12, the second fan is started to drive the impurities in the groove 12 to be collected and discharged from the collection hole 13.

[0038] 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 positioning mechanism, disposed on a cutting device, characterized in that, The positioning mechanism includes a positioning frame (1) and a horizontal detection mechanism disposed on the positioning frame (1); The positioning frame (1) is fixed inside the cutting equipment, and the positioning frame (1) is set at the bottom of the cutting mechanism in the cutting equipment to support the LCD panel; the positioning frame (1) is provided with four support tubes (2), each of the support tubes (2) is provided with a suction cup (3) at the top, and the bottom of the support tubes (2) is connected to the vacuum pump through a pipeline; The horizontal detection mechanism includes a detection frame (4), a lifting mechanism, and multiple pressure sensors (5); the lifting mechanism is installed on the positioning frame (1), and the lifting mechanism is connected to the detection frame (4) to control the lifting of the detection frame (4). The pressure sensor (5) is provided on the top of the detection frame (4), and multiple pressure sensors (5) are symmetrically arranged on the top of the detection frame (4); the lifting mechanism can drive the detection frame (4) to rise until the pressure sensor (5) contacts the bottom of the liquid crystal panel.

2. The liquid crystal panel positioning mechanism according to claim 1, characterized in that, The level detection mechanism also includes a comparison unit, which can acquire the pressure values ​​of each pressure sensor (5) and compare the pressure values.

3. The liquid crystal panel positioning mechanism according to claim 1, wherein The lifting mechanism includes a fixed frame (6), a lifting frame (7), a first lifting cylinder (8), and a second lifting cylinder (9); the fixed frame (6) is fixed on the positioning frame (1), the lifting frame (7) is located at the upper end of the fixed frame (6), and the detection frame (4) is located at the upper end of the lifting frame (7); The first lifting cylinder (8) is installed on the fixed frame (6) and connected to the lifting frame (7) to control the lifting of the lifting frame (7). The second lifting cylinder (9) is installed on the lifting frame (7) and connected to the detection frame (4) to control the lifting of the detection frame (4).

4. The liquid crystal panel positioning mechanism according to claim 3, wherein The four corners of the fixed frame (6) are provided with the first lifting cylinder (8), and the four first lifting cylinders (8) work synchronously; the four corners of the lifting frame (7) are provided with the second lifting cylinder (9), and the four second lifting cylinders (9) work synchronously.

5. A cutting apparatus characterized by, It includes the main body of the cutting machine, the cutting mechanism, and the positioning mechanism as described in any one of claims 1-4.

6. The cutting apparatus of claim 5, wherein, The cutting equipment also includes a dust removal mechanism, which includes an adsorption channel (10), a first fan, and a filter cover (11); the adsorption channel (10) is formed in the middle of the detection frame (4), the bottom of the adsorption channel (10) is connected to the first fan, and the filter cover (11) is disposed in the adsorption channel (10).

7. The cutting apparatus of claim 6, wherein, The filter cover (11) is hemispherical and there are multiple filter covers (11). The filter covers (11) are spaced apart to form a trough (12). A collection hole (13) communicating with the trough (12) is provided on one side of the trough (12). The collection hole (13) is connected to the second fan.

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