Special measuring machine for appearance of liquid crystal display screen finished product

Abstract

The utility model relates to a liquid crystal display screen finished product appearance special-purpose measuring machine table comprising a marble platform, the marble platform is arranged on a movable platform pedestal, the marble platform is provided with an X-axis switching sliding table module and a Y-axis switching sliding table module, the X-axis switching sliding table module and the Y-axis switching sliding table module are respectively arranged along the X-axis direction and the Y-axis direction in an extending manner, and the X-axis switching sliding table module and the Y-axis switching sliding table module are arranged on the movable platform pedestal. The X-axis switching sliding table module is connected with the liquid crystal display panel carrying table in a matched mode, the liquid crystal display panel carrying table provided with a finished liquid crystal display screen is fed into the machine table in the X-axis direction for appearance detection, the Z-axis lifting optical sensor is connected to the Y-axis switching sliding table module, and stand columns on the two sides of the Y-axis switching sliding table module are fixed to the marble platform. The Y-axis switching sliding table module is used for driving the Z-axis lifting optical sensor to move in the Y-axis direction, and the Z-axis lifting optical sensor is used for detecting the finished liquid crystal display screen. Compared with the prior art, the utility model can detect whether the product is bad or abnormal at a high speed, saves the overall cost, and effectively improves the detection efficiency.

Description

[Technical Field]

[0001] This utility model relates to the field of liquid crystal display measurement technology, specifically a special measuring machine for the shape of finished liquid crystal display products. [Background Technology]

[0002] A 3D coordinate measuring machine (CMM), also known as a three-dimensional coordinate measuring machine, is a high-precision measuring device widely used in machinery, precision instruments, and modern manufacturing. With advancements in technology, 3D measurement technology has become an important component of modern engineering. It can measure parameters such as the surface structure, shape, and dimensions of objects, providing reliable data for manufacturing, quality control, and assembly processes. However, existing methods have the following main shortcomings:

[0003] (1) The price of three-dimensional measuring instruments on the market is expensive, and due to the limitation of table size and because they are single machines, they are not suitable for such large-scale automated production lines.

[0004] (2) The measuring instrument needs to be paired with a high-pressure air compressor, which will increase noise during use. In addition, the high-pressure air compressor is prone to accumulating moisture in the air. If it is not used and maintained frequently, the parts are prone to rust and damage.

[0005] (3) After a long period of use, the measuring instrument is easily affected by temperature and humidity, and may even fail to turn on. It needs to be kept in a laboratory environment with constant temperature and humidity.

[0006] (4) Large precision measuring instruments such as three-dimensional measuring instruments need to be used for small-scale measurements in environments such as laboratories, and their practicality in automated production lines is relatively low.

[0007] It is evident that there are no dedicated measuring machines on the market for measuring the appearance of finished LCD screens. Therefore, providing a dedicated measuring machine for the appearance of LCD screens would be of great significance. [Utility Model Content]

[0008] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a special measuring machine for the shape of finished liquid crystal display screens, which can detect product defects or abnormalities at high speed, save overall costs, and effectively improve testing efficiency.

[0009] To achieve the above objectives, a dedicated measurement machine for the finished shape of an LCD display screen is designed, comprising a movable platform base 1, a marble platform 2, an X-axis switching slide module 3, a Y-axis switching slide module 4, and a Z-axis lifting optical sensor 5. The marble platform 2 is placed on the movable platform base 1. The X-axis switching slide module 3 and the Y-axis switching slide module 4 are arranged on the marble platform 2. The X-axis switching slide module 3 extends along the X-axis direction and is connected to the LCD panel carrier 100, on which the LCD panel is placed. The LCD panel stage 100 of the finished display screen is fed into the machine along the X-axis for shape inspection. The Y-axis switching slide module 4 extends along the Y-axis and is mounted above the X-axis switching slide module 3. The Z-axis lifting optical sensor 5 is connected to the Y-axis switching slide module 4. The columns on both sides of the Y-axis switching slide module 4 are fixed on the marble platform 2. The Y-axis switching slide module 4 is used to drive the Z-axis lifting optical sensor 5 to move along the Y-axis. The Z-axis lifting optical sensor 5 is used to inspect the finished LCD display screen.

[0010] Furthermore, the LCD panel platform 100 includes a liftable platform 102, a dust-free cable chain 103, a lifting positioning column 105, and a servo synchronous belt group 107. The base plate of the liftable platform 102 is connected to the dust-free cable chain 103, and the other end of the dust-free cable chain 103 is connected to the X-axis switching slide module 3. The lifting positioning column 105 is fixed below the lifting top plate of the liftable platform 102. The lifting positioning column 105 is connected to the output end of the servo synchronous belt group 107 and its lifting height is adjusted under the drive of the servo synchronous belt group 107.

[0011] Furthermore, the upper surface of the liftable platform 102 is fitted with an anti-slip silicone pad, and an LCD panel 101 is placed on the anti-slip silicone pad, thereby preventing displacement of the product platform when the whole is moved.

[0012] Furthermore, the upper surface of the liftable platform 102 is provided with a groove, and an adjustable positioning column 104 is installed through the groove. The adjustable positioning column 104 is connected to the output end of the adjustable positioning column power motor 106, and the adjustable positioning column 104 is used to position the liquid crystal panel 101.

[0013] Furthermore, the liquid crystal panel stage 100 also includes a linear slider group 108 and a synchronous slider group 109. The linear slider group 108 and the synchronous slider group 109 are distributed on both sides of the servo synchronous belt group 107. The linear slider group 108 is fixed to the same plane as the servo synchronous belt group 107. The synchronous slider group 109 and the linear slider group 108 move in the same direction and are both used to provide lifting power for the liftable stage 102.

[0014] Furthermore, the Z-axis lifting optical sensor 5 includes a lifting slide cylinder 501, an optical detector mounting base 502, an optical detector 503, and a laser sensor 504. The lifting slide cylinder 501 and the optical detector mounting base 502 are both connected to the Y-axis switching slide module 4 and move in the Y-axis direction through the Y-axis switching slide module 4. The lifting end of the lifting slide cylinder 501 is connected to the laser sensor 504, and the optical detector mounting base 502 is connected to the optical detector 503.

[0015] Furthermore, the lifting slide cylinder 501 is connected to the slider fixing seat of the Y-axis switching slide module 4, and moves along the Y-axis track of the Y-axis switching slide module 4 via the slider fixing seat. The lifting end of the lifting slide cylinder 501 is equipped with an angle aluminum connecting plate, which has an L-shaped structure. The laser sensor 504 is mounted on the angle aluminum connecting plate.

[0016] Furthermore, the back of the optical detector mounting base 502 is connected to the slider mounting base of the Y-axis switching slide module 4. The optical detector mounting base 502 has an L-shaped structure, and the optical detector 503 is connected to the bottom outer side of the optical detector mounting base 502.

[0017] Compared with existing technologies, this invention, by setting up an X-axis switching slide module, a Y-axis switching slide module, a Z-axis lifting optical sensor, and an LCD panel carrier, sends the finished LCD display screen into the machine for external shape inspection. The Z-axis lifting optical sensor detects differences in panel data, enabling high-speed detection of product defects or anomalies and providing real-time data for effective recording. This saves overall costs and effectively improves inspection efficiency, effectively solving problems related to manual operation, rapid switching, and restarting, thus increasing uptime. This invention, combined with the XY-axis switching module, can accurately position the product. Its Z-axis adjustable lifting optical inspection mechanism has an error accuracy of less than ±0.005mm, high repeatability, and high switching flexibility, making it suitable for automated production. Furthermore, by combining the optical detector with a laser sensor, this invention avoids serious judgment errors or measurement distortions, effectively improving inspection efficiency and making it worthy of widespread application. [Image Description]

[0018] Figure 1 This is an exploded view of the application structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model;

[0020] Figure 3a This is a schematic diagram of the structure of the liquid crystal panel carrier of this utility model. Figure 1 ;

[0021] Figure 3b This is a schematic diagram of the structure of the liquid crystal panel carrier of this utility model. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the structure of the Z-axis lifting optical sensor of this utility model;

[0023] Figure 5 This is a schematic diagram (three-dimensional view) of the application structure of this utility model;

[0024] In the diagram: 1. Movable platform base; 2. Marble platform; 3. X-axis switching slide module; 4. Y-axis switching slide module; 5. Z-axis lifting optical sensor; 101. LCD panel; 102. Liftable platform; 103. Dust-free cable chain; 104. Adjustable positioning column; 105. Lifting positioning column; 106. Adjustable positioning column motor; 107. Servo synchronous belt group; 108. Linear slider group; 109. Synchronous slider group; 501. Lifting slide cylinder; 502. Optical detector mounting base; 503. Optical detector; 504. Laser sensor; 100. LCD panel platform; 200. Operator; 300. Z-axis lifting adjustable optical inspection mechanism; 400. XY-axis switching marble platform; 500. Fully automatic dust removal grating fence. [Detailed Implementation]

[0025] As shown in the attached figure, this utility model provides a special measuring machine for the shape of a finished LCD display screen, including a movable platform base 1, a marble platform 2, an X-axis switching slide module 3, a Y-axis switching slide module 4, and a Z-axis lifting optical sensor 5. The marble platform 2 is placed on the movable platform base 1. The X-axis switching slide module 3 and the Y-axis switching slide module 4 are arranged on the marble platform 2. The X-axis switching slide module 3 extends along the X-axis direction and is connected to the LCD panel carrier 100. The LCD panel stage 100 with finished LCD display screens is fed into the machine along the X-axis for shape inspection. The Y-axis switching slide module 4 extends along the Y-axis and is mounted above the X-axis switching slide module 3. The Z-axis lifting optical sensor 5 is connected to the Y-axis switching slide module 4. The columns on both sides of the Y-axis switching slide module 4 are fixed on the marble platform 2. The Y-axis switching slide module 4 is used to drive the Z-axis lifting optical sensor 5 to move along the Y-axis. The Z-axis lifting optical sensor 5 is used to inspect the finished LCD display screens.

[0026] The LCD panel stage 100 includes a liftable stage 102, a cleanroom cable chain 103, a lifting positioning column 105, a servo synchronous belt group 107, a linear slider group 108, and a synchronous slider group 109. The base plate of the liftable stage 102 is connected to the cleanroom cable chain 103, and the other end of the cleanroom cable chain 103 is connected to the X-axis switching slide module 3. The lifting positioning column 105 is fixed below the lifting top plate of the liftable stage 102. The lifting positioning column 105 is connected to the output end of the servo synchronous belt group 107 and its lifting height is adjusted under the drive of the servo synchronous belt group 107. An anti-slip silicone pad is attached to the upper surface of the liftable stage 102. An LCD panel 101 is provided to prevent displacement of the product platform during overall movement. The upper surface of the liftable platform 102 is provided with a groove, and an adjustable positioning column 104 is installed through the groove. The adjustable positioning column 104 is connected to the output end of the adjustable positioning column power motor 106 and is used to position the LCD panel 101. The linear slider group 108 and the synchronous slider group 109 are distributed on both sides of the servo synchronous belt group 107. The linear slider group 108 is fixed to the same plane as the servo synchronous belt group 107. The synchronous slider group 109 and the linear slider group 108 move in the same direction and are both used to provide lifting power for the liftable platform 102.

[0027] The Z-axis lifting optical sensor 5 includes a lifting slide cylinder 501, an optical detector mounting base 502, an optical detector 503, and a laser sensor 504. Both the lifting slide cylinder 501 and the optical detector mounting base 502 are connected to the Y-axis switching slide module 4 and move along the Y-axis via the Y-axis switching slide module 4. The lifting end of the lifting slide cylinder 501 is connected to the laser sensor 504, and the optical detector 503 is connected to the optical detector mounting base 502. The lifting slide cylinder 501 is connected to the Y-axis... The sliding block is mounted on the slider fixing seat of the sliding block module 4, and moves along the Y-axis of the Y-axis switching slide block module 4 via the slider fixing seat. The lifting end of the lifting slide cylinder 501 is equipped with an angle aluminum connecting plate, which has an L-shaped structure. The laser sensor 504 is mounted on the angle aluminum connecting plate. The back of the optical detector fixing seat 502 is connected to the slider fixing seat of the Y-axis switching slide block module 4. The optical detector fixing seat 502 has an L-shaped structure, and the optical detector 503 is connected to the bottom outer side of the optical detector fixing seat 502.

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] As attached Figure 1 and attached Figure 5As shown, this utility model is mainly applied to the appearance inspection process of finished LCD screens. It belongs to the automatic measurement machine of automatic appearance inspection equipment and consists of an LCD panel platform 100, an operator 200, a Z-axis lifting adjustable optical inspection mechanism 300, an XY axis switching marble platform 400, and a fully automatic dust removal grating fence 500.

[0030] As attached Figure 2 As shown, the Z-axis adjustable optical inspection mechanism and the XY-axis switching marble platform are used together, and their components are as follows:

[0031] (1) Movable platform base 1: Panel factories or laboratories may use different time and space backgrounds, and the available space may change according to the needs of operators. Therefore, a movable base can be made to change the location at any time.

[0032] (2) Marble Platform 2: In order to effectively read high-precision data, the levelness requirements of the platform and its detection device are extremely high. Therefore, the marble platform is used as a reference to read reliable data.

[0033] (3) X-axis switching slide module 3: After the personnel put the completed LCD screen product onto the LCD panel carrier, the switching slide module sends it into the machine for shape inspection.

[0034] (4) Y-axis switching slide module 4: The two columns are fixed on the marble platform. After the horizontal adjustment, it must be ensured that it is perpendicular to the marble platform. The Z-axis lifting optical detector is moved by switching the left and right modules to detect the difference in the length and thickness of the panel.

[0035] (5) Z-axis lifting optical sensor 5: responsible for detecting the data differences of three points on each side (length, width, height) of the panel, and then exporting the data for comparison of appearance differences, and completing the factory record inspection of all products.

[0036] As attached Figure 3a and attached Figure 3b As shown, the LCD panel stage consists of the following components:

[0037] (1) LCD panel 101: Provided by the customer for testing the product itself, and will not be described in detail here.

[0038] (2) Liftable platform 102: The top edge of the lifting platform contacts the LCD panel, and a groove is made on the upper surface to fix the position with the adjustable positioning column. An anti-slip silicone pad is attached to the upper surface to prevent the product platform from shifting when the whole is moved.

[0039] (3) Dust-free cable chain 103: Due to the high number of production cycles and the large detection range, frequent and large-scale movement will seriously affect the overall cleanliness of the machine. In addition, the machine is a precision measuring machine, and it is difficult to clean micro-dust. Using a dust-free cable chain can effectively avoid the generation of dust and other particles.

[0040] (4) Adjustable positioning column 104: The adjustable positioning column motor is used to position the product without manual contact, reducing the accuracy distortion caused by human operation.

[0041] (5) Lifting and positioning column 105: It is fixed under the liftable platform and is equipped with a servo synchronous belt group for adjustable lifting.

[0042] (6) Adjustable positioning column motor 106: Switching the position of the adjustable positioning column reduces the chance of manual contact and improves the positioning stability of the product.

[0043] (7) Servo synchronous belt group 107: provides lifting power for the liftable platform and effectively controls the lifting height.

[0044] (8) Linear slider group 108: It is fixed to the same plane as the servo synchronous belt group, providing the stability of the X-axis forward movement of the lifting platform.

[0045] (9) Synchronous slider group 109: It is used in conjunction with the linear slider group to make displacement in the same direction, and increases stability and product platform matching ratio.

[0046] As attached Figure 4 As shown, the Z-axis lifting optical detector consists of the following components:

[0047] (1) Lifting slide cylinder 501: Connect the bottom of the cylinder to the slider fixing seat of the Y-axis switching slide module, and connect it with the laser sensor using an angle aluminum connecting plate, so that the laser sensor can perform high-speed detection and export usable data.

[0048] (2) Optical detector mounting base 502: The back side is connected to the slider mounting base of the Y-axis switching slide module, and the L side is combined with the optical detector to provide the optical detector with stable judgment of the product's horizontal and vertical position. Only then can the laser sensor be used to detect the product, and the exported data can be used as the measurement basis.

[0049] (3) Optical detector 503: This component is a common and reliable detector on the market. It can effectively and accurately judge horizontal and vertical changes, avoiding serious judgment errors or measurement distortion.

[0050] (4) Laser sensor 504: This component is a common and reliable detector on the market. It can effectively read at high speed and provide the effect of quickly exporting the interpretation data. When combined with an optical detector, it can compare the deviation of the product seat at high speed and accuracy, thereby recording and eliminating defective products, effectively improving the detection efficiency.

[0051] In operation, the following steps can be taken: The platform clamping mechanism is switched according to the product requirements. The corresponding product is placed on the LCD panel platform and fed into the inspection station by the X-axis switching slide module. A Z-axis adjustable optical inspection mechanism is used to perform three-point inspection of the product's external shape (length, width, and height). The inspection data is compared with the original set dimensions and error values ​​of the product. After comparison, defective products are selected, and the original inspection data is retained. The batch number and product serial number of the defective products are recorded. After recording, the inspected LCD panel products are removed from the inspection station, and the defective products are taken out by the responsible inspection personnel and returned to the box for repair.

[0052] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0053] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A dedicated measuring machine for the shape of a finished liquid crystal display screen, characterized in that: The system includes a movable platform base (1), a marble platform (2), an X-axis switching slide module (3), a Y-axis switching slide module (4), and a Z-axis lifting optical sensor (5). The marble platform (2) is placed on the movable platform base (1). The marble platform (2) is equipped with the X-axis switching slide module (3) and the Y-axis switching slide module (4). The X-axis switching slide module (3) extends along the X-axis direction and is connected to the LCD panel carrier (100) to hold the LCD panel containing the finished LCD display. The table (100) is fed into the machine along the X-axis direction for external shape inspection. The Y-axis switching slide module (4) extends along the Y-axis direction and is mounted above the X-axis switching slide module (3). The Z-axis lifting optical sensor (5) is connected to the Y-axis switching slide module (4). The columns on both sides of the Y-axis switching slide module (4) are fixed on the marble platform (2). The Y-axis switching slide module (4) is used to drive the Z-axis lifting optical sensor (5) to move along the Y-axis direction. The Z-axis lifting optical sensor (5) is used to inspect the finished LCD screen.

2. The dedicated measuring machine for the finished shape of a liquid crystal display screen as described in claim 1, characterized in that: The LCD panel platform (100) includes a liftable platform (102), a dust-free cable chain (103), a lifting positioning column (105), and a servo synchronous belt group (107). The base plate of the liftable platform (102) is connected to the dust-free cable chain (103), and the other end of the dust-free cable chain (103) is connected to the X-axis switching slide module (3). The lifting positioning column (105) is fixed below the lifting top plate of the liftable platform (102). The lifting positioning column (105) is connected to the output end of the servo synchronous belt group (107) and its lifting height is adjusted under the drive of the servo synchronous belt group (107).

3. The dedicated measuring machine for the finished shape of a liquid crystal display screen as described in claim 2, characterized in that: The upper surface of the liftable platform (102) is covered with an anti-slip silicone pad, and an LCD panel (101) is placed on the anti-slip silicone pad.

4. The dedicated measuring machine for the finished shape of a liquid crystal display screen as described in claim 2, characterized in that: The upper surface of the liftable platform (102) is provided with a groove, and an adjustable positioning column (104) is installed through the groove. The adjustable positioning column (104) is connected to the output end of the adjustable positioning column power motor (106). The adjustable positioning column (104) is used to position the liquid crystal panel (101).

5. The dedicated measuring machine for the finished shape of a liquid crystal display screen as described in claim 2, 3, or 4, characterized in that: The liquid crystal panel stage (100) also includes a linear slider group (108) and a synchronous slider group (109). The linear slider group (108) and the synchronous slider group (109) are distributed on both sides of the servo synchronous belt group (107). The linear slider group (108) is fixed to the same plane as the servo synchronous belt group (107). The synchronous slider group (109) and the linear slider group (108) move in the same direction and are both used to provide lifting power for the liftable stage (102).

6. The dedicated measuring machine for the finished shape of a liquid crystal display screen as described in claim 1, characterized in that: The Z-axis lifting optical sensor (5) includes a lifting slide cylinder (501), an optical detector mounting base (502), an optical detector (503), and a laser sensor (504). The lifting slide cylinder (501) and the optical detector mounting base (502) are both connected to the Y-axis switching slide module (4) and move in the Y-axis direction through the Y-axis switching slide module (4). The lifting end of the lifting slide cylinder (501) is connected to the laser sensor (504), and the optical detector mounting base (502) is connected to the optical detector (503).

7. The dedicated measuring machine for the finished shape of a liquid crystal display screen as described in claim 6, characterized in that: The lifting slide cylinder (501) is connected to the slider fixing seat of the Y-axis switching slide module (4) and moves along the Y-axis track of the Y-axis switching slide module (4) through the slider fixing seat. The lifting end of the lifting slide cylinder (501) is equipped with an angle aluminum connecting plate. The angle aluminum connecting plate has an L-shaped structure, and the laser sensor (504) is installed on the angle aluminum connecting plate.

8. The dedicated measuring machine for the finished shape of a liquid crystal display screen as described in claim 7, characterized in that: The back of the optical detector mounting base (502) is connected to the slider mounting base of the Y-axis switching slide module (4). The optical detector mounting base (502) has an L-shaped structure, and the optical detector (503) is connected to the bottom outer side of the optical detector mounting base (502).

Images