A polarizing plate screening device

Abstract

The utility model discloses a polarizing plate screening device belongs to polarizing plate screening technical field, including conveying frame, set up the conveying belt on conveying frame, draw a plurality of placing frame on the conveying belt along the conveying direction, set up the pushing device on conveying frame and can push polarizing plate along the vertical direction of conveying direction and move, and set up the inspection subassembly on conveying frame and can carry out the vertical displacement, every placing frame's center all is provided with the locating point, the utility model discloses through setting up pushing device and locating point, can make polarizing plate maximum degree to be located in the center position of placing frame, and then need not adjust the horizontal position of inspection subassembly when subsequent inspection, improve the inspection accuracy and the inspection convenience.

Description

Technical Field

[0001] This utility model relates to the field of polarizer screening technology, and in particular to a polarizer screening device. Background Technology

[0002] Polarizers are composed of a thin film made of a highly oriented polymer with linear molecules that are naturally parallel to the film surface. Their fabrication typically involves stretching and fixing the molecules along a single axis, ensuring they are parallel to each other and perpendicular to the surface. Films made in this way exhibit unique light-receptive properties, allowing light to oscillate only within a specific plane in a particular direction. Polarizers are now used in virtually every display module, widely applied in mobile phones, tablets, laptops, monitors, televisions, CNC displays, 3C products, beauty and medical devices, industrial applications, entertainment applications, and automotive displays.

[0003] After polarizer production, the polarizers need to be inspected and screened based on the inspection results. For example, patent application number CN202321283229.1 discloses a polarizer inspection and screening device, including a worktable. A positioning shaft is fixedly connected to the top of the worktable near the center, and a feeding inspection mechanism is sleeved on the outer wall of the positioning shaft. A discharging mechanism is fixedly connected to the top of the worktable away from the positioning shaft. Support legs are fixedly connected to the bottom of the worktable near the corners for positioning and fixing the entire device. This invention improves inspection efficiency by placing the polarizers to be screened on the placement slot of a rotating disk, allowing for a continuous supply of polarizers. Simultaneously, the discharging mechanism enables rapid collection and discharging of good and defective products after inspection, further improving screening efficiency.

[0004] In actual screening, the polarizer is placed in the placement slot of the rotating disk. To facilitate the inspection of the polarizer and improve the accuracy of the inspection, the inspection component is usually set directly above the center of the placement slot. Therefore, it is best to place the polarizer in the center of the placement slot during actual inspection. However, since there are various sizes of polarizers, it is difficult to ensure that each polarizer is placed in the center of the entire placement slot. This leads to the need to adjust the relative position of the inspection component and the polarizer during inspection, making the actual inspection and screening process more troublesome. Utility Model Content

[0005] The purpose of this invention is to provide a polarizer screening device that ensures the polarizer is placed in the middle of the placement slot, improving inspection accuracy. At the same time, it eliminates the need to adjust the relative position of the inspection component and the polarizer separately (i.e., it eliminates the need to adjust the horizontal position of the inspection component), thus improving inspection convenience.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A polarizer screening device includes a conveyor frame, a conveyor belt disposed on the conveyor frame, a plurality of placement frames drawn on the conveyor belt along the conveying direction, a pushing device disposed on the conveyor frame and capable of pushing the polarizer to move in a direction perpendicular to the conveying direction, and an inspection component disposed on the conveyor frame and capable of vertical displacement; each placement frame has a positioning point at its center.

[0008] Preferably, the pushing device includes a fixed plate disposed on the conveyor frame and located outside the two long sides of the conveyor belt, a first hydraulic rod disposed on each of the fixed plates, and a push plate disposed at the telescopic end of each of the first hydraulic rods.

[0009] Preferably, a scale line is provided between the positioning point of each placement frame and the two side walls of the placement frame perpendicular to the conveying direction, and the zero scale line is provided at the end away from the positioning point.

[0010] Preferably, the conveyor frame is equipped with a gantry frame, the gantry frame is equipped with a second hydraulic rod, and the telescopic end of the second hydraulic rod is equipped with an inspection component.

[0011] Preferably, the polarizer screening device further includes a vertical rod disposed on the conveyor frame, a horizontal rod rotatably disposed on the vertical rod, and a suction assembly disposed at the bottom end of the horizontal rod.

[0012] Preferably, the suction assembly includes a third hydraulic rod disposed at the bottom end of the crossbar, a suction cup disposed at the telescopic end of the third hydraulic rod, a cavity disposed in the suction cup, a plurality of suction holes disposed at the bottom end of the cavity, an air duct disposed on the side wall of the suction cup and connected to the cavity, and a negative pressure fan disposed on the conveyor frame and connected to the air duct.

[0013] Preferably, the conveyor frame is also provided with multiple placement boxes.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] By drawing multiple placement frames along the conveying direction at the top of the conveyor belt, the polarizer to be inspected can be placed. By drawing the placement frames, the surface of the conveyor belt can be kept flat, ensuring that the pushing device can smoothly push the polarizer.

[0016] By providing a pushing device on the conveyor frame that can push the polarizer to move in the direction perpendicular to the conveying direction, after the polarizer is placed in the placement frame, the pushing device can push the polarizer close to the sidewalls of the two long sides of the conveyor belt, thereby positioning the polarizer in the middle of the placement frame.

[0017] By setting a positioning point at the center of each placement frame, it is easy for staff to accurately locate the center of the placement frame when placing the polarizer. This can then be used as a reference to place the polarizer as close to the center of the placement frame as possible, thereby reducing the time required for subsequent position adjustments.

[0018] This invention, by setting a pushing device and a positioning point, enables the polarizer to be positioned as far as possible in the center of the placement frame, thereby improving the accuracy and convenience of inspection. Attached Figure Description

[0019] Figure 1 This is a top view of the structure of Example 1;

[0020] Figure 2 for Figure 1 Structural diagram of the middle gantry crane from the left view;

[0021] Figure 3 This is a top view of the structure of Example 2;

[0022] Figure 4 for Figure 3 A cross-sectional view of the central suction assembly from the left side.

[0023] In the diagram: 1-Conveyor frame, 2-Conveyor belt, 3-Placement frame, 4-Positioning point, 5-Fixing plate, 6-First hydraulic rod, 7-Push plate, 8-Scale line, 9-Gantry frame, 17-Second hydraulic rod, 10-Vertical rod, 18-Horizontal rod, 11-Third hydraulic rod, 12-Suction cup, 16-Cavity, 13-Air duct, 14-Negative pressure fan. Detailed Implementation

[0024] Example 1

[0025] A polarizer screening device, such as Figure 1 As shown, the device includes a conveyor frame 1, a conveyor belt 2 mounted on the conveyor frame 1, multiple placement frames 3 drawn along the conveying direction on the conveyor belt 2, a pushing device mounted on the conveyor frame 1 capable of moving the polarizer in the vertical direction of the conveying direction, and an inspection assembly mounted on the conveyor frame 1 capable of vertical displacement; each placement frame 3 has a positioning point 4 at its center (the positioning point 4 and the placement frame 3 are drawn in a different color than the conveyor belt 2). Figure 1 As shown, the conveyor frame 1 is also equipped with a motor that drives the conveyor belt 2 to rotate. The conveying principle of the conveyor belt 2 is existing technology, and its working principle and basic structure will not be described in detail here. Furthermore, as... Figure 1As shown, the pushing device includes a fixed plate 5 disposed on the conveyor frame 1 and located outside the two long sides of the conveyor belt 2, a first hydraulic rod 6 disposed on each of the fixed plates 5, and a push plate 7 disposed at the telescopic end of each of the first hydraulic rods 6. Further, as... Figure 1 As shown, a scale line 8 is provided between the positioning point 4 of each placement frame 3 and the two side walls of the placement frame 3 perpendicular to the conveying direction, such as... Figure 1 As shown, of the two scale lines 8, the zero scale line 8 is located at the end furthest from the positioning point 4. Furthermore, as... Figure 1-2 As shown, a gantry frame 9 is installed on the conveyor frame 1, and a second hydraulic rod 17 is installed on the gantry frame 9. An inspection component (existing technology) is installed at the telescopic end of the second hydraulic rod 17, positioned at the midpoint of the two long sides of the conveyor belt 2. It is worth noting that... Figure 1 The 0 written on the side of each placement box 3 is to make it easier to see the location of the zero mark 8.

[0026] Working principle: The polarizer to be tested is placed in the placement frame 3 (for ease of description, the sidewalls of the polarizer closest to the two long sides of the conveyor belt 2 are called the first sidewalls, and the sidewall perpendicular to the first sidewall is called the second sidewall). During placement, the center of the polarizer is made as close as possible to the positioning point 4, and the distances of the two second sidewalls from the two sidewalls of the placement frame 3 with the zero scale line 8 are made as equal as possible. Then, under the action of the motor, the conveyor belt 2 moves the polarizer until it moves to the pushing device. The first hydraulic rod 6 is activated (with the same extension and retraction speed), which moves the two push plates 7 close to the polarizer until they contact the first sidewall. In this way, through the coordinated action of the scale line 8, the positioning point 4 and the pushing device, the polarizer can be placed in the center of the placement frame 3. Once the polarizer is moved directly below the inspection device, activate the second hydraulic rod 17 to bring the inspection assembly to the optimal inspection height. Then, inspect the polarizer using the inspection assembly. After inspection, use the inspection data to screen the polarizers and place the screened polarizers in the designated positions.

[0027] Example 2

[0028] Based on Example 1, such as Figure 3 and Figure 4 As shown, the polarizer screening device further includes a vertical rod 10 mounted on the conveyor frame 1, a horizontal rod 18 rotatably mounted on the vertical rod 10, and a suction assembly mounted at the bottom end of the horizontal rod 18. Further, as... Figure 3 and Figure 4As shown, the suction assembly includes a third hydraulic rod 11 located at the bottom of the crossbar 18, a suction cup 12 located at the telescopic end of the third hydraulic rod 11, a cavity 16 located within the suction cup 12, multiple suction holes located at the bottom of the cavity 16, an air duct 13 located on the side wall of the suction cup 12 and connected to the cavity 16, and a negative pressure fan 14 located on the conveyor frame 1 and connected to the air duct 13. Furthermore, the conveyor frame 1 is also equipped with multiple placement boxes (existing technology, not shown in the figure; the placement boxes are located where the suction cup 12 can reach) to facilitate the placement of the inspected polarizer.

[0029] Working principle: After the polarizer is inspected by the inspection component, it continues to be conveyed by conveyor belt 2. When the next polarizer to be inspected moves directly below the inspection component, conveyor belt 2 stops moving. At this time, the polarizers that have already been inspected are exactly at the same position. Figure 3 At the position shown, rotate the crossbar 18 to rotate the suction assembly until it is directly above the polarizer (as shown). Figure 3 and Figure 4 Then, activate the third hydraulic rod 11 to make the suction cup 12 contact the polarizer. Then, turn on the negative pressure fan to adsorb the polarizer through the suction cup 12. Then, rotate the crossbar 18 to transfer the polarizer to the designated placement box through the suction cup 12.

Claims

1. A polarizer screening device, characterized in that, It includes a conveyor frame (1), a conveyor belt (2) disposed on the conveyor frame (1), a plurality of placement frames (3) drawn on the conveyor belt (2) along the conveying direction, a pushing device disposed on the conveyor frame (1) and capable of pushing the polarizer to move in the vertical direction along the conveying direction, and an inspection component disposed on the conveyor frame (1) and capable of vertical displacement; each of the placement frames (3) is provided with a positioning point (4) at its center.

2. The polarizer screening device according to claim 1, characterized in that, The pushing device includes a fixed plate (5) disposed on the conveyor frame (1) and located outside the two long sides of the conveyor belt (2), a first hydraulic rod (6) disposed on each fixed plate (5), and a push plate (7) disposed at the telescopic end of each first hydraulic rod (6).

3. The polarizer screening device according to claim 1, characterized in that, Each of the placement frames (3) has a scale line (8) between its positioning point (4) and the two side walls of the placement frame (3) perpendicular to the conveying direction. The zero scale line (8) is located at the end away from the positioning point (4).

4. The polarizer screening device according to claim 1, characterized in that, The conveyor frame (1) is provided with a gantry frame (9), and the gantry frame (9) is provided with a second hydraulic rod (17). The telescopic end of the second hydraulic rod (17) is provided with an inspection component.

5. The polarizer screening device according to claim 1, characterized in that, It also includes a vertical rod (10) disposed on the conveyor frame (1), a horizontal rod (18) rotatably disposed on the vertical rod (10), and a suction assembly disposed at the bottom end of the horizontal rod (18).

6. The polarizer screening device according to claim 5, characterized in that, The suction assembly includes a third hydraulic rod (11) disposed at the bottom end of the crossbar (18), a suction cup (12) disposed at the telescopic end of the third hydraulic rod (11), a cavity (16) disposed in the suction cup (12), a plurality of suction holes disposed at the bottom end of the cavity (16), an air duct (13) disposed on the side wall of the suction cup (12) and connected to the cavity (16), and a negative pressure fan (14) disposed on the conveyor frame (1) and connected to the air duct (13).

7. The polarizer screening device according to claim 6, characterized in that, The conveyor frame (1) is also equipped with multiple placement boxes.

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