Quantum dot diffusion plate detection device

Abstract

This utility model discloses a quantum dot diffuser plate detection device, belonging to the technical field of diffuser plate detection equipment. It includes a base, a connecting shaft, and a turntable. The base consists of a semi-circular rear plate and two symmetrical front plates. An infrared emitting unit, a multispectral excitation light source module, and an image acquisition unit are sequentially arranged along the arc-shaped edge of the rear plate. A drive motor drives the connecting shaft via a synchronous belt, causing the turntable to rotate. The turntable has at least four stations, each equipped with an adjustable limiting component. The diffuser plate is quickly clamped and fixed using sliding blocks, slots, pressing plates, and spring mechanisms. Each station also has an infrared receiving unit, which works in conjunction with the infrared emitting unit on the rear plate to achieve precise positioning. This device realizes automated continuous detection at multiple stations. Through a multispectral excitation and image acquisition system, it can efficiently and accurately detect the optical performance of quantum dot diffusers, greatly improving detection efficiency and accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of diffusion plate testing equipment, specifically relating to a quantum dot diffusion plate testing device. Background Technology

[0002] As a key optical component in display devices, the performance of quantum dot diffusers directly affects the color gamut, brightness, and uniformity of the screen.

[0003] During the production process, the optical properties of quantum dot diffusers need to be rigorously tested to ensure product quality. Traditional testing methods typically involve manual operation, placing each diffuser under test on a testing platform, exciting it with a single light source, and manually acquiring image data. This method is inefficient, labor-intensive, and prone to deviations in test results due to inconsistent human operation. Furthermore, because the properties of quantum dot materials require multispectral light sources for excitation, traditional equipment often struggles to provide a stable and uniform multispectral illumination environment, further affecting the accuracy and repeatability of the test.

[0004] Therefore, there is a need for a high-precision quantum dot diffuser plate inspection device that can achieve automated, multi-station continuous inspection and provide a standard optical inspection environment to meet the high efficiency and high precision requirements for quality control in large-scale production. Utility Model Content

[0005] The purpose of this invention is to provide a quantum dot diffuser plate detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quantum dot diffuser plate detection device, comprising a base, a connecting shaft, and a turntable. The base includes a semi-circular rear plate and two symmetrically arranged front plates. The two front plates are fixedly connected to one side of the rear plate, and a fixing plate is fixedly connected to the middle of the opposite sides of the two front plates. A drive motor is fixedly installed in the middle of the fixing plate, and the output shaft of the drive motor is connected to the lower end of the shaft of the connecting shaft via a synchronous belt. A semi-circular turntable groove is provided in the middle of the front end of the rear plate, and the turntable is slidably connected to the rear plate through the turntable groove. An infrared emitting unit, a multispectral excitation light source module, and an image acquisition device are sequentially fixedly installed along the arc-shaped edge of the upper end of the rear plate. The upper end of the shaft of the connecting shaft passes through the center of the turntable and is fixedly connected to the turntable via a fixing bolt. The turntable is uniformly provided with at least four sets of stations for installing diffuser plates along its circumference; each station includes a mounting groove on the turntable, and sliding grooves are provided on both the front and rear side walls of the mounting groove, with a sliding post fixed in the sliding groove; two limiting components have sliding blocks slidably fitted onto corresponding sliding posts, and slots are provided on the opposite inner sides of the two sliding blocks, allowing the diffuser plate to be tested to be placed between the two slots; the turntable has a through hole on the front side corresponding to each station, and a connecting post passes through the through hole; one end of the connecting post is fixedly connected to a pressing plate that can be inserted into the slot, and the other end is fixedly connected to a fixing handle; the pressing plate is connected to the front side wall of the sliding groove by a limiting spring fitted on the connecting post; each station also has an infrared receiving unit on one side for cooperating with the infrared emitting unit.

[0007] It should be noted in the solution that the lower ends of the rear plate and the two front plates are all fixedly connected to anti-slip plates.

[0008] It is worth noting that the lower end of the connecting shaft is provided with an external gear ring, the output shaft of the drive motor is provided with a drive gear ring, and the synchronous belt is a synchronous toothed belt, the inner side of which is respectively meshed with the drive gear ring of the output shaft and the external gear ring of the shaft.

[0009] Furthermore, it should be noted that both the shaft of the connecting shaft and the output shaft of the drive motor are fixedly provided with limiting rings on both sides of the synchronous belt.

[0010] In a preferred embodiment, a plurality of locking blocks are fixed on the outer surface of the connection between the shaft of the connecting shaft and the turntable, and a locking groove matching the locking blocks is provided in the central hole of the turntable, and the locking blocks are embedded in the locking groove to form a sliding connection.

[0011] In a preferred embodiment, the lower outer ring of the turntable is fixedly connected with an annular protrusion retaining ring, and the upper ends of the two front plates are provided with arc-shaped guide grooves that match the retaining rings. The retaining rings are embedded in the guide grooves and are slidably connected to each other.

[0012] In a preferred embodiment, the multispectral excitation light source module includes a control unit, a standard light source, and a reflector; the rear plate is fixedly connected to a semi-circular upper box and a lower box at the upper and lower ends of the turntable groove, respectively; the control unit is fixed on the upper box, the standard light source at its lower end extends into the upper box, and the reflector is installed at an angle in the lower box.

[0013] In a preferred embodiment, the inner surface of the slot and the front side of the extrusion plate are both provided with anti-slip pads.

[0014] Compared with the prior art, the quantum dot diffusion plate detection device provided by this utility model has at least the following beneficial effects:

[0015] (1) This device significantly improves detection efficiency and automation. By driving a synchronous belt with a drive motor, which in turn drives the connecting shaft and turntable to rotate, multiple workstations can be switched cyclically. Each workstation is equipped with a quick clamping mechanism consisting of a sliding block, a slot, a pressing plate, and a spring. While the operator is clamping or unloading at one workstation, other workstations are sequentially being inspected by the optical inspection unit on the back plate, forming a continuous detection process. This greatly reduces waiting time and is suitable for efficient and automated detection of batch diffusion plates.

[0016] (2) This device ensures the accuracy and consistency of the detection data. Its core lies in the precise sequential arrangement of three key sensors—the infrared emitting unit, the multispectral excitation source module, and the image acquisition unit—along the arc-shaped edge of the semi-circular rear plate. This layout ensures that each diffuser plate sent to the detection position by the turntable receives illumination from the excitation source at the same relative distance and angle, and is imaged, eliminating measurement errors caused by positional differences. Combined with the positioning function of the infrared beam-and-beam unit, it guarantees the consistency of detection conditions for each test, thereby effectively improving the repeatability and reliability of the detection results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the front structure of this utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the connecting shaft structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting component structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the rear plate structure of this utility model. Figure 1 ;

[0022] Figure 6 This is a schematic diagram of the rear plate structure of this utility model. Figure 2 .

[0023] In the diagram: 1. Base; 101. Front plate; 102. Rear plate; 1021. Turntable groove; 103. Anti-slip plate; 2. Infrared emitting unit; 3. Multispectral excitation light source module; 301. Control unit; 3011. Standard light source; 302. Upper housing; 303. Lower housing; 304. Reflector; 4. Image acquisition unit; 5. Fixing plate; 6. Connecting shaft; 601. Shaft; 602. Fixing bolt; 603. Locking block; 604. External gear ring; 6 05. Limiting ring; 7. Turntable; 701. Mounting slot; 702. Sliding slot; 703. Through hole; 704. Sliding column; 705. Snap ring; 8. Limiting assembly; 801. Sliding block; 802. Snap groove; 803. Anti-slip pad; 804. Extrusion plate; 805. Connecting column; 806. Fixed handle; 807. Limiting spring; 9. Diffuser plate; 10. Drive motor; 1001. Output shaft; 11. Synchronous belt; 12. Infrared receiving unit. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Please see Figure 1-6This utility model provides a quantum dot diffuser plate detection device, comprising: a base 1, a connecting shaft 6, and a turntable 7. The base 1 includes a semi-circular rear plate 102 and two symmetrically arranged front plates 101. The two front plates 101 are fixedly connected to one side of the rear plate 102, and a fixing plate 5 is fixedly connected to the middle of the opposite sides of the two front plates 101. A drive motor 10 is fixedly installed in the middle of the fixing plate 5, and the output shaft 1001 of the drive motor 10 is connected to the lower end of the shaft 601 of the connecting shaft 6 via a synchronous belt 11. A semi-circular turntable groove 1021 is provided in the middle of the front end of the rear plate 102, and the turntable 7 is slidably connected to the rear plate 102 via the turntable groove 1021. An infrared emitting unit 2, a multispectral excitation light source module 3, and an image acquisition device 4 are sequentially fixedly installed along the arc-shaped edge of the upper end of the rear plate 102. The upper end of the shaft 601 of the connecting shaft 6 passes through the center of the turntable 7 and is fixedly connected to the turntable 7 via a fixing bolt 602. The turntable 7 is uniformly arranged along its circumference. At least four stations are provided for installing diffuser plates 9; each station includes a mounting groove 701 opened on the turntable 7, and sliding grooves 702 are provided on both the front and rear side walls of the mounting groove 701. A sliding post 704 is fixed in the sliding groove 702; the sliding blocks 801 of the two limiting components 8 are slidably sleeved on the corresponding sliding posts 704. The inner sides of the two sliding blocks 801 are provided with slots 802, and the diffuser plate 9 to be tested can be placed between the two slots 802; the turntable 7 is provided with a through hole 703 on the front side corresponding to each station, and a connecting post 805 passes through the through hole 703; one end of the connecting post 805 is fixedly connected to a pressing plate 804 that can be inserted into the slot 802, and the other end is fixedly connected to a fixing handle 806; the pressing plate 804 and the front side wall of the sliding groove 702 are connected by a limiting spring 807 sleeved on the connecting post 805; an infrared receiving unit 12 for cooperating with the infrared emitting unit 2 is also provided on one side of each station.

[0026] Further as Figure 2 As shown, it is worth noting that the lower ends of the rear plate 102 and the two front plates 101 are fixedly connected to the anti-slip plate 103. The anti-slip plate 103 enhances the friction between the base 1 and the placement surface, effectively preventing the equipment from sliding or shifting during the testing process, and ensuring the stability and safety of the testing process.

[0027] Further as Figure 3 As shown, it is worth noting that the lower end of the shaft 601 of the connecting shaft 6 is provided with an external gear ring 604, the output shaft 1001 of the drive motor 10 is provided with a drive gear ring, and the synchronous belt 11 is a synchronous toothed belt. Its inner side is respectively meshed with the drive gear ring of the output shaft 1001 and the external gear ring 604 of the shaft 601. Through the meshing transmission of the external gear ring 604, the drive gear ring and the synchronous toothed belt 11, the precise synchronous speed transmission between the drive motor 10 and the connecting shaft 6 is realized, avoiding slippage and ensuring the accuracy of the rotation positioning of the turntable 7.

[0028] Further as Figure 3 As shown, it is worth noting that on both sides of the synchronous belt 11, limit rings 605 are fixed on the shaft 601 of the connecting shaft 6 and the output shaft 1001 of the drive motor 10. The limit rings 605 can axially limit the synchronous belt 11 to prevent it from axially shifting or falling off during transmission, thus ensuring the reliability and durability of the transmission system.

[0029] The working process of this solution is as follows: The operator pulls the fixed handle 806 outward, causing the connecting column 805 and the pressing plate 804 to compress the limiting spring 807. Then, the diffuser plate 9 to be tested is placed between the slots 802 of the two sliding blocks 801. After releasing the handle, under the action of the spring 807's rebound force, the pressing plate 804 firmly presses the diffuser plate 9 into the slot 802. The drive motor 10 starts, driving the outer gear ring 604 at the lower end of the connecting shaft 6 to rotate through the drive gear ring on the output shaft 1001 and the synchronous belt 11, thereby driving the turntable 7, which is fixed to the connecting shaft 6 by the fixing bolt 602, to rotate together.

[0030] The turntable 7 carries diffuser plates 9 from multiple stations sequentially through the detection area. When the infrared receiving unit 12 on the station side receives a signal from the infrared emitting unit 2 on the rear plate 102, it indicates that the diffuser plate 9 has been precisely positioned at the detection location, and the drive motor 10 stops operating. Subsequently, the standard light source 3011 of the multispectral excitation light source module 3 emits excitation light, which is reflected by the reflector 304 and uniformly illuminates the diffuser plate 9. The image acquisition device 4 simultaneously acquires the luminescent image of the excited quantum dots. After the detection is completed, the motor 10 restarts, rotating the next station to the detection position, thereby realizing continuous and automated cyclic detection.

[0031] As can be seen from the above working process, the anti-slip plate 103 enhances the friction between the base 1 and the placement surface, effectively preventing the equipment from sliding or shifting during the testing process, thus ensuring the stability and safety of the testing process. Through the meshing transmission of the external gear ring 604, the drive gear ring, and the synchronous toothed belt 11, precise synchronous speed transmission between the drive motor 10 and the connecting shaft 6 is achieved, avoiding slippage and ensuring the accuracy of the turntable 7's rotational positioning. The limiting ring 605 axially limits the synchronous belt 11, preventing axial displacement or detachment during transmission, ensuring the reliability and durability of the transmission system.

[0032] Further as Figure 3As shown, it is worth noting that several locking blocks 603 are fixed on the outer surface of the connection between the shaft 601 of the connecting shaft 6 and the turntable 7. The turntable 7 has a slot in the center hole that matches the locking blocks 603. The locking blocks 603 are embedded in the slot to form a sliding connection. Through the embedded sliding connection between the locking blocks 603 and the slot in the center hole of the turntable 7, the connecting shaft 6 and the turntable 7 can rotate synchronously, while providing additional radial support, which enhances the structural rigidity and stability of the turntable 7 when it rotates.

[0033] Further as Figure 3 As shown, it is worth noting that the lower outer ring of the turntable 7 is fixedly connected with an annular protrusion retaining ring 705, and the upper ends of the two front plates 101 are provided with arc-shaped guide grooves that match the retaining ring 705. The retaining ring 705 is embedded in the guide groove and slides back and forth. Through the sliding cooperation between the retaining ring 705 and the arc-shaped guide groove at the upper end of the front plate 101, stable radial support and limit are provided for the rotational movement of the turntable 7, ensuring that the turntable 7 remains stable and without shaking during rotation, thereby ensuring the positioning accuracy of the workstation.

[0034] Further as Figure 5 and Figure 6 As shown, it is worth noting that the multispectral excitation source module 3 includes a control unit 301, a standard light source 3011, and a reflector 304. The upper and lower ends of the rear plate 102, located in the turntable groove 1021, are respectively fixedly connected to a semi-circular upper box 302 and a lower box 303. The control unit 301 is fixed on the upper box 302, and the standard light source 3011 at its lower end extends into the upper box 302. The reflector 304 is installed at an angle in the lower box 303. The upper box 302 and the lower box 303 form a relatively closed optical environment. The light emitted by the standard light source 3011 can uniformly illuminate the sample after being reflected by the reflector 304, effectively reducing the interference of ambient stray light and providing stable and standard illumination conditions for multispectral excitation and image acquisition, thereby improving the detection accuracy.

[0035] Further as Figure 4 As shown, it is worth noting that anti-slip pads 803 are provided on the inner surface of the slot 802 and the front side of the extrusion plate 804. The anti-slip pads 803 increase the friction coefficient between the inner surface of the slot 802 and the extrusion plate 804 and the diffuser plate 9, preventing the diffuser plate 9 from loosening or shifting during clamping or testing, ensuring that the sample is firmly fixed, thereby guaranteeing the reliability of the test results.

[0036] In summary: The embedded sliding connection between the clamping block 603 and the slot in the center hole of the turntable 7 provides additional radial support while enabling synchronous rotation of the connecting shaft 6 and the turntable 7, enhancing the structural rigidity and stability of the turntable 7 during rotation. The sliding fit between the retaining ring 705 and the arc-shaped guide groove at the upper end of the front plate 101 provides stable radial support and limiting for the rotational movement of the turntable 7, ensuring that the turntable 7 remains stable and wobble-free during rotation, thereby guaranteeing the positioning accuracy of the workstation. The upper housing 302 and the lower housing 303 constitute a relatively enclosed optical environment. The light emitted by the standard light source 3011 is reflected by the reflector 304 and can uniformly illuminate the sample, effectively reducing ambient stray light interference and providing stable and standard lighting conditions for multispectral excitation and image acquisition, thus improving detection accuracy. The anti-slip pad 803 increases the coefficient of friction between the inner surface of the slot 802 and between the extrusion plate 804 and the diffuser plate 9, preventing the diffuser plate 9 from loosening or shifting during clamping or detection, ensuring that the sample is firmly fixed, thereby guaranteeing the reliability of the detection results.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quantum dot diffuser plate detection device, comprising a base (1), a connecting shaft (6) and a rotating disc (7), characterized in that: The base (1) includes a semi-circular rear plate (102) and two symmetrically arranged front plates (101). The two front plates (101) are fixedly connected to one side of the rear plate (102), and a fixing plate (5) is fixedly connected to the middle of the opposite sides of the two front plates (101). A drive motor (10) is fixedly installed in the middle of the fixing plate (5), and the output shaft (1001) of the drive motor (10) is connected to the lower end of the shaft (601) of the connecting shaft (6) via a synchronous belt (11). The rear plate (102) has a centrally located front end. The turntable (7) has a semi-circular turntable groove (1021) through which it is slidably connected to the rear plate (102). An infrared emitting unit (2), a multispectral excitation source module (3), and an image acquisition device (4) are sequentially fixedly installed along the arc-shaped edge of the upper end of the rear plate (102). The upper end of the shaft (601) of the connecting shaft (6) passes through the center of the turntable (7) and is fixedly connected to the turntable (7) via a fixing bolt (602). At least four sets of mounting brackets (9) are evenly arranged circumferentially on the turntable (7). Workstation; each workstation includes a mounting groove (701) opened on a turntable (7), and the front and rear side walls of the mounting groove (701) are provided with sliding grooves (702), and a sliding column (704) is fixed in the sliding groove (702); the sliding blocks (801) of the two limiting components (8) are slidably sleeved on the corresponding sliding columns (704), and the two sliding blocks (801) are provided with slots (802) on their opposite inner sides, and the diffuser plate (9) to be tested can be placed between the two slots (802); the turntable (7) corresponds to each workstation. A through hole (703) is provided on the front side of the station, and a connecting post (805) passes through the through hole (703); one end of the connecting post (805) is fixedly connected to a pressing plate (804) that can be inserted into the slot (802), and the other end is fixedly connected to a fixing handle (806); the pressing plate (804) and the front side wall of the sliding groove (702) are connected by a limiting spring (807) sleeved on the connecting post (805); each station is also provided with an infrared receiving unit (12) on one side for cooperating with the infrared emitting unit (2). 2.The quantum dot diffusion plate detection device of claim 1, wherein: The lower ends of the rear plate (102) and the two front plates (101) are fixedly connected to the anti-slip plate (103). 3.The quantum dot diffusion plate detection device of claim 1, wherein: The lower end of the shaft (601) of the connecting shaft (6) is provided with an external gear ring (604), the output shaft (1001) of the drive motor (10) is provided with a drive gear ring, and the synchronous belt (11) is a synchronous toothed belt, the inner side of which is meshed with the drive gear ring of the output shaft (1001) and the external gear ring (604) of the shaft (601) respectively.

4. The quantum dot diffuser plate detection apparatus of claim 1, wherein: On the shaft (601) of the connecting shaft (6) and the output shaft (1001) of the drive motor (10), limit rings (605) are fixedly provided on both sides of the synchronous belt (11).

5. The quantum dot diffuser plate detection apparatus of claim 1, wherein: Several locking blocks (603) are fixed on the outer surface of the connection between the shaft body (601) of the connecting shaft (6) and the turntable (7). The turntable (7) has a slot in the center hole that matches the locking block (603). The locking block (603) is embedded in the slot to form a sliding connection.

6. The quantum dot diffuser plate detection apparatus of claim 1, wherein: The lower outer ring of the turntable (7) is fixedly connected with an annular protrusion retaining ring (705), and the upper ends of the two front plates (101) are provided with arc-shaped guide grooves that match the retaining ring (705). The retaining ring (705) is embedded in the guide groove and is slidably connected to the front and back.

7. The quantum dot diffuser plate detection apparatus of claim 1, wherein: The multispectral excitation light source module (3) includes a control unit (301), a standard light source (3011), and a reflector (304); the rear plate (102) is fixedly connected to the upper and lower ends of the turntable groove (1021) with a semi-circular upper box (302) and a lower box (303), respectively. The control unit (301) is fixed on the upper box (302), and the standard light source (3011) at its lower end extends into the upper box (302). The reflector (304) is installed obliquely in the lower box (303).

8. The quantum dot diffuser plate detection apparatus of claim 1, wherein: The inner surface of the slot (802) and the front side of the extrusion plate (804) are both provided with anti-slip pads (803).

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