CCD (Charge Coupled Device) flaw detection device for quantum dot diffusion plate production

Abstract

The invention relates to the technical field of diffusion plate quality detection, and provides a CCD defect detection device for quantum dot diffusion plate production, the CCD defect detection device comprises a mounting rack, a detection head, a discharge bin and a conveying mechanism, the mounting rack is provided with a detection station, and the detection head is arranged on the detection station; the discharging bin is arranged on one side of the detection head, a storage cavity used for storing the diffusion plate is formed in the discharging bin, and a discharging opening communicated with the storage cavity is formed in one side of the discharging bin; the conveying mechanism comprises a conveying belt and a transfer assembly, the conveying belt is arranged on the mounting rack and located at the bottom of the detection station, and one end of the conveying belt extends to the bottom of a discharging port of the discharging bin; the transferring assembly is arranged between the discharging bin and the conveying belt and used for transferring the diffusion plates in the storage cavity to the conveying belt one by one. According to the CCD defect detection device for quantum dot diffusion plate production, the detection efficiency of the diffusion plate can be improved.

Description

Technical Field

[0001] This application relates to the technical field of diffusion plate quality inspection, and particularly to a CCD defect detection device for the production of quantum dot diffusion plates. Background Art

[0002] A quantum dot diffusion plate is an innovative optical display material. By embedding one or more layers of quantum dots into the diffusion plate, specific optical effects and functions can be achieved. As a core optical component of the display backlight module, the surface cleanliness of the diffusion plate directly affects the brightness and color gamut uniformity of the liquid crystal screen. Therefore, defect detection is a crucial step in the production process of diffusion plates.

[0003] In the prior art, CCD scanning is generally used for defect detection of diffusion plates. The detection device mainly includes a mounting frame and a CCD camera. The mounting frame has a detection station, and the CCD camera is installed on the detection station. During detection, the diffusion plate is placed in the detection station. The CCD camera can receive optical signals and convert them into electrical signals. The optical signals contain light components of different wavelengths, and these light components carry important information about the properties of substances. By obtaining image information in different wavelength bands through the CCD camera and combining equipment such as optical filters or spectrometers, the spectral components are analyzed to identify defects on the diffusion plate.

[0004] However, when performing defect detection on such diffusion plates, during the operation of placing or removing the diffusion plate from the detection station, excessive reliance on manual labor leads to low overall detection efficiency and is not suitable for large-scale defect detection operations of diffusion plates. Therefore, further improvement is needed. Summary of the Invention

[0005] In order to improve the detection efficiency of diffusion plates, this application provides a CCD defect detection device for the production of quantum dot diffusion plates.

[0006] The CCD defect detection device for the production of quantum dot diffusion plates provided by this application adopts the following technical solutions: A CCD defect detection device for the production of quantum dot diffusion plates includes a mounting frame, a detection head, a loading bin, and a conveying mechanism. The mounting frame has a detection station, and the detection head is arranged on the detection station; the loading bin is arranged on one side of the detection head, and a storage cavity for storing diffusion plates is provided in the loading bin. One side of the loading bin has a loading opening communicating with the storage cavity; the conveying mechanism includes a conveyor belt and a transfer component. The conveyor belt is arranged on the mounting frame and is located at the bottom of the detection station. One end of the conveyor belt extends to the bottom of the loading opening of the loading bin; the transfer component is arranged between the loading bin and the conveyor belt to transfer the diffusion plates in the storage cavity to the conveyor belt one by one.

[0007] By adopting the above technical solution, during detection, through the transfer component, the diffusion plates stored in the storage cavity are transferred to the conveyor belt one by one, and the conveyor belt sequentially transfers multiple diffusion plates into the detection station, enabling the detection heads at the detection station to sequentially perform defect detection on multiple diffusion plates, reducing the manual participation when the diffusion plates are moved into or out of the detection station, and improving the detection efficiency of the diffusion plates.

[0008] Optionally, a connecting shaft is provided at the bottom of the loading bin. The transfer component includes a swing frame, a suction pipe, and a swinging member. The swing frame is rotatably installed on the connecting shaft. The suction pipe is connected to the side wall of the swing frame. A suction nozzle for adsorbing the diffusion plate is provided on the outer peripheral wall of the suction pipe. There are a first position and a second position between the loading bin and the conveyor belt. When the swing frame swings to the first position, the suction nozzle is transferred to the discharge opening of the loading bin. When the swing frame swings to the second position, the suction nozzle drives the diffusion plate to be transferred to the conveyor belt. The swinging member is used to drive the swing frame to reciprocate between the first position and the second position.

[0009] By adopting the above technical solution, the swinging member drives the swing frame to swing from the second position to the first position. At this time, the swing frame transfers the suction nozzle to the discharge opening of the loading bin, so as to be able to adsorb the diffusion plate at the discharge opening. Then, the swing frame is driven to swing from the first position back to the second position, and the adsorbed diffusion plate can be transferred to the conveyor belt. Repeating this process, the diffusion plates in the loading bin are transferred out one by one, improving the operation convenience of the overall structure.

[0010] Optionally, the swing frame is connected with a rotating sleeve, and the rotating sleeve is rotatably installed on the outer peripheral wall of the connecting shaft. The swinging member includes a rotating shaft, a rotating cam, and a swinging bar. The rotating shaft is rotatably arranged at the bottom of the loading bin. The rotating cam is coaxially arranged on the rotating shaft, and an eccentric column is provided on the surface of the rotating cam. One end of the swinging bar is connected to the rotating sleeve, and a swinging groove for the eccentric column to be embedded is formed on the side wall of the swinging bar.

[0011] By adopting the above technical solution, driving the rotating shaft to rotate drives the eccentric column to perform "revolution" around the central axis of the rotating shaft. The eccentric column pushes the swinging bar through the inner wall of the swinging groove, realizing the reciprocating swing of the swinging bar, that is, realizing the reciprocating swing of the swing frame, enabling the swing frame to reciprocate between the first position and the second position to transfer the diffusion plates in the loading bin to the conveyor belt one by one.

[0012] Optionally, the diffusion plates in the storage cavity normally slide towards the discharge opening, and the number of diffusion plates accommodated at the discharge opening is one. A blocking arm is rotatably arranged at the discharge opening of the loading bin. Normally, the blocking arm blocks the discharge opening. The loading bin is provided with a first driving member. When the swing frame swings to the first position, the first driving member forces the blocking arm to flip to open the discharge opening.

[0013] By adopting the above technical solution, during the process that the swing frame drives the suction nozzle to swing to the first position, the first driving member forces the blocking arm to turn over, thereby opening the material discharge port, so that the swing frame can transfer the diffusion plate at the material discharge port to the conveyor belt through the suction nozzle. After the diffusion plate at the material discharge port is taken away, the diffusion plates in the storage cavity slide down under their own gravity to automatically replenish to the material discharge port. Repeating this process, multiple diffusion plates in the storage cavity are transferred to the conveyor belt one by one.

[0014] Optionally, a mounting seat is provided at the bottom of the material discharge bin, and a pushing bar is provided on the swing frame; the first driving member includes a linkage gear, a linkage rack and a return spring. The linkage gear is rotatably installed on the mounting seat, a rotating rod is connected to the blocking arm, and there is a circumferential linkage between the rotating rod and the linkage gear; the linkage rack is slidably installed on the mounting seat, and there is a meshing transmission between the linkage rack and the linkage gear; the return spring is arranged between the linkage rack and the mounting seat. When the swing frame swings to the first position, the pushing bar pushes the linkage rack and forces the blocking arm to open the material discharge port.

[0015] By adopting the above technical solution, when the swing frame swings to the first position, the swing frame pushes the linkage rack through the pushing bar, so that the linkage rack and the linkage gear are in meshing transmission. There is a circumferential linkage between the linkage gear and the rotation, thereby driving the rotating rod to rotate, and making the blocking arm rotate around the central axis of the rotating rod to avoid the material discharge port. After the swing frame adsorbs the diffusion plate at the material discharge port through the suction nozzle, it drives the swing frame to swing towards the second position, and the linkage rack resets under the elastic force of the return spring, thereby forcing the blocking arm to close the material discharge port again, improving the operation convenience of the overall structure.

[0016] Optionally, limiting bars are slidably installed on both sides of the storage cavity, and a second driving member is provided on the material discharge bin. When the swing frame swings to the first position, the second driving member forces the two limiting bars to approach each other to clamp the diffusion plates in the storage cavity.

[0017] By adopting the above technical solution, the second driving member forces the two limiting bars to approach or move away from each other to control the sliding speed of the diffusion plates in the storage cavity, so that multiple diffusion plates in the storage cavity can be replenished to the material discharge port one by one.

[0018] Optionally, the second driving member includes pushing blocks and compression springs. There are two pushing blocks. Both pushing blocks are slidably installed on the mounting seat. The two pushing blocks are arranged corresponding to the two limiting bars. Each pushing block is connected to the corresponding limiting bar. When the two pushing blocks move away from each other, the two limiting bars approach each other; the compression spring is arranged between the two pushing blocks, and a pushing channel for the pushing bar to pass through is formed between the two pushing blocks. When the swing frame swings to the first position, the pushing bar penetrates into the pushing channel and forces the two pushing blocks to move away from each other.

[0019] By adopting the above technical solution, during the process of the swing frame swinging to the first position, the pushing bar is driven to penetrate into the pushing channel, forcing the two pushing blocks to move away from each other, so that the two limiting bars can move closer to each other to limit the diffusion plate in the storage cavity and prevent the diffusion plate from slipping. When the swing frame transfers the diffusion plate at the feeding port to the second position, at this time, the blocking arm closes the feeding port again, and the two pushing blocks move closer to each other again under the action of the compression spring to force the two limiting bars to move away from each other, so that the diffusion plate in the storage cavity can be automatically replenished to the feeding port, greatly improving the operation convenience of the overall structure.

[0020] Optionally, each of the pushing blocks has a guiding surface for the pushing bar to push.

[0021] By adopting the above technical solution, through the setting of the guiding surface, when the swing frame swings towards the first position, the pushing bar can push the two pushing blocks and force the two pushing blocks to move away from each other, and cooperate with the compression spring to realize the reciprocating sliding of the pushing blocks.

[0022] Optionally, the linkage rack is located at the rear end of the pushing channel. When the swing frame swings to the first position, after the pushing bar penetrates into the pushing channel, it pushes the linkage rack.

[0023] By adopting the above technical solution, by arranging the linkage rack at the rear end of the pushing channel, the achieved effect is that when the swing frame swings to the first position, the pushing bar first forces the limiting bar to limit the diffusion plate in the storage cavity, and then pushes the linkage rack to force the blocking arm to rotate to open the feeding port. After the suction nozzle of the swing frame adsorbs the diffusion plate at the feeding port, it drives the swing frame to swing from the first position to the second position. At this time, the pushing bar first disengages from the linkage rack, that is, the blocking arm first resets to close the feeding port, and then the two limiting bars reset to release the diffusion plate in the storage cavity, so that the diffusion plate can be automatically replenished to the feeding port, greatly improving the feeding stability of the overall structure and achieving the effect of feeding one by one.

[0024] Optionally, the swing frame is connected with an adsorption seat. The adsorption seat has an adsorption cavity. The adsorption seat is connected with an exhaust pipe. The outlet end of the exhaust pipe and the inlet end of the adsorption pipe are both communicated with the adsorption cavity; the adsorption seat is provided with an opening and closing member. When the swing frame swings to the second position, the opening and closing member closes the adsorption cavity. When the swing frame swings out of the second position, the opening and closing member opens the adsorption cavity.

[0025] By adopting the above technical solution, during the process of the swing frame swinging from the second position to the first position, at this time, the adsorption cavity is opened so that the suction nozzle can adsorb the diffusion plate at the feeding port. After the suction nozzle adsorbs the diffusion plate, it drives the swing frame to swing from the first position to the second position. At this time, the opening and closing member closes the adsorption cavity, thereby transferring the diffusion plate to the conveyor belt and improving the operation convenience of the overall structure.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the arrangement of the conveyor belt and the transfer component, during detection, through the transfer component, the diffusion plates stored in the storage cavity are transferred one by one onto the conveyor belt, and the conveyor belt sequentially transfers multiple diffusion plates into the detection station, enabling the detection heads at the detection station to sequentially perform defect detection on multiple diffusion plates, reducing the manual participation when the diffusion plates are moved into or out of the detection station, and improving the detection efficiency of the diffusion plates; 2. Through the arrangement of the swing member, the swing frame is driven to swing from the second position to the first position. At this time, the swing frame transfers the suction nozzle to the discharge opening of the feeding bin, so as to be able to adsorb the diffusion plate at the discharge opening. Then, the swing frame is driven to swing from the first position back to the second position, and the adsorbed diffusion plate can be transferred onto the conveyor belt; repeating this process, the diffusion plates in the feeding bin are transferred out one by one, improving the operation convenience of the overall structure; 3. By arranging the linkage rack at the rear end of the pushing channel, when the swing frame swings to the first position, the pushing bar first forces the limiting bar to limit the diffusion plate in the storage cavity, and then pushes the linkage rack, forcing the blocking arm to rotate to open the discharge opening. After the suction nozzle of the swing frame adsorbs the diffusion plate at the discharge opening, the swing frame is driven to swing from the first position towards the second position. At this time, the pushing bar first disengages from the linkage rack, that is, the blocking arm first resets to close the discharge opening, and then the two limiting bars reset to release the diffusion plate in the storage cavity, enabling the diffusion plate to automatically replenish to the discharge opening, greatly improving the discharging stability of the overall structure and achieving the effect of discharging one by one. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of Embodiment 1; Figure 2 is the structural schematic diagram of Embodiment 1 showing the swing frame rotating to the first position; Figure 3 is the structural schematic diagram of Embodiment 1 showing the swing frame rotating to the second position; Figure 4 is the partial cross-sectional view of Embodiment 1 showing the swing frame rotating to the first position; Figure 5 is the partial cross-sectional view of Embodiment 1 showing the swing frame rotating to the second position; Figure 6 is the partial cross-sectional view of Embodiment 1 showing the pushing block; Figure 7 is the partial cross-sectional view of Embodiment 1 showing the linkage gear and the linkage rack; Figure 8 is the partial cross-sectional view of Embodiment 1 showing the limiting bar; Figure 9 is the structural schematic diagram of Embodiment 2 showing the adsorption seat; Figure 10 FIG. 2 is a partial cross-sectional view showing the fixing plate and the sliding plate in Example 2.

[0028] Description of reference numerals: 1, mounting frame; 11, detection station; 12, connecting shaft; 13, first point; 14, second point; 15, drive motor; 16, blocking block; 2, detection head; 3, feeding bin; 31, storage cavity; 32, feeding port; 33, mounting seat; 331, reversing gear; 34, limiting chute; 4, conveyor belt; 5, transfer assembly; 51, swing frame; 511, rotating sleeve; 512, pushing bar; 52, suction pipe; 521, suction nozzle; 53, rotating shaft; 54, rotating cam; 541, eccentric column; 55, swing bar; 551, swing groove; 6, blocking arm; 61, linkage gear; 62, linkage rack; 63, return spring; 64, rotating rod; 7, limiting bar; 71, pushing block; 711, pushing channel; 712, guiding surface; 72, connecting bar; 73, connecting frame; 8, suction seat; 81, suction cavity; 811, first partition; 812, second partition; 82, exhaust pipe; 83, connecting pipe; 84, fixing plate; 841, first communication hole; 85, sliding plate; 851, second communication hole; 86, limiting spring; 87, sliding rod. Detailed implementation manners

[0029] The following Figures 1 - 10 further describes the present application in detail. Example 1

[0030] The embodiment of the present application discloses a CCD defect detection device for the production of quantum dot diffusion plates.

[0031] Referring to Figure 1 , a CCD defect detection device for the production of quantum dot diffusion plates includes a mounting frame 1, a detection head 2, a feeding bin 3 and a conveying mechanism. There is a detection station 11 on the mounting frame 1, and the detection head 2 is fixedly installed on the detection station 11. In this embodiment, the detection head 2 is a CCD camera, and the CCD camera is electrically connected to a spectrometer (both the CCD camera and the spectrometer are prior arts, and their structures will not be elaborated here).

[0032] Referring to Figure 2 , Figure 3 , the feeding bin 3 is fixedly installed on one side of the detection head 2. A storage cavity 31 for storing diffusion plates is provided in the feeding bin 3, and a feeding port 32 communicating with the storage cavity 31 is provided on one side of the feeding bin 3; in this embodiment, the feeding bin 3 is inclined so that the diffusion plates in the storage cavity 31 can slide towards the feeding port 32 under the action of their own gravity under normal conditions.

[0033] Referring to Figure 3 , Figure 4 ,Figure 5 , the conveying mechanism includes a conveyor belt 4 and a transfer assembly 5. The conveyor belt 4 is installed on the installation frame 1 and is located at the bottom of the detection station 11. One end of the conveyor belt 4 extends to the bottom of the discharge port 32 of the feeding bin 3. In this embodiment, two groups of conveyor belts 4 are arranged at intervals; the transfer assembly 5 is arranged between the feeding bin 3 and the conveyor belt 4 for transferring the diffusion plates in the storage cavity 31 to the conveyor belt 4 one by one.

[0034] A connecting shaft 12 is fixedly installed on the side wall of the installation frame 1. The connecting shaft 12 is located at the bottom of the feeding bin 3; the transfer assembly 5 includes a swing frame 51, a suction pipe 52 and a swing member. The swing frame 51 is fixedly connected with a rotating sleeve 511. The rotating sleeve 511 is rotatably installed on the outer peripheral wall of the connecting shaft 12. The swing frame 51 is rotatably installed on the outer peripheral wall of the connecting shaft 12 through the rotating sleeve 511; the suction pipe 52 is fixedly connected to the side wall of the swing frame 51. The suction pipe 52 can be fixedly connected to the swing frame 51 through a hoop. A plurality of suction nozzles 521 for sucking the diffusion plates are installed on the outer peripheral wall of the suction pipe 52. The plurality of suction nozzles 521 are arranged at intervals along the axial direction of the suction pipe 52. Each suction nozzle 521 communicates with the inside of the suction pipe 52; the suction pipe 52 is connected with an exhaust pipe 82 (the exhaust pipe 82 is not shown in the figure of this embodiment). The exhaust pipe 82 is a flexible pipe. The inlet end of the exhaust pipe 82 communicates with the inside of the suction pipe 52. The outlet end of the exhaust pipe 82 is used for external connection to an exhaust device (such as an exhaust pump).

[0035] There is a first point 13 and a second point 14 between the feeding bin 3 and the conveyor belt 4. When the swing frame 51 swings to the first point 13, the swing frame 51 drives the suction nozzle 521 to transfer to the discharge port 32 of the feeding bin 3; when the swing frame 51 swings to the second point 14, the suction nozzle 521 drives the diffusion plate to transfer to the conveyor belt 4.

[0036] Refer to Figure 4 、 Figure 5 , the swing member is used to drive the swing frame 51 to reciprocate between the first point 13 and the second point 14. The swing member includes a rotating shaft 53, a rotating cam 54 and a swing bar 55. The rotating shaft 53 is rotatably installed on the side wall of the installation frame 1 and is located at the bottom of the connecting shaft 12. The rotating cam 54 is fixedly installed on the outer peripheral wall of the rotating shaft 53. An eccentric column 541 is rotatably connected to the surface of the rotating cam 54. The central axis of the eccentric column 541 is parallel to the central axis of the rotating shaft 53, so that when the rotating shaft 53 rotates, the eccentric column 541 can revolve around the central axis of the rotating shaft 53.

[0037] One end of the swing bar 55 is fixedly connected to the rotating sleeve 511. A swing groove 551 for the eccentric column 541 to be embedded is formed in the side wall of the swing bar 55. Both ends of the swing groove 551 extend along the radial direction of the connecting shaft 12. In this embodiment, a driving motor 15 is fixedly installed on the side wall of the installation frame 1, and the output shaft of the driving motor 15 is coaxially connected to the rotating shaft 53. When the rotating shaft 53 rotates, the rotating shaft 53 forces the swing bar 55 to swing reciprocally around the central axis of the connecting shaft 12 through the eccentric column 541, and forces the swing frame 51 to swing reciprocally between the first position 13 and the second position 14.

[0038] Referring to Figure 2 、 Figure 3 , in this embodiment, the number of diffusion plates accommodated at the discharge port 32 is one. A blocking arm 6 is provided at the discharge port 32 of the discharge bin 3. The number of the blocking arms 6 is two. Each blocking arm 6 is fixedly connected with a rotating rod 64. The rotating rod 64 is rotatably installed on the side wall of the discharge bin 3. The blocking arm 6 is rotatably installed on the discharge bin 3 through the rotating rod 64. Under normal conditions (when the swing frame 51 swings to the second position 14), the blocking arm 6 blocks the discharge port 32. The discharge bin 3 is provided with two groups of first driving members, and the two groups of first driving members are correspondingly arranged with the two groups of blocking arms 6. When the swing frame 51 swings to the first position 13, the first driving member forces the corresponding blocking arm 6 to flip to open the discharge port 32.

[0039] Referring to Figure 3 、 Figure 6 、 Figure 7 , a mounting seat 33 is fixedly installed at the bottom of the discharge bin 3. The first driving member includes a linkage gear 61, a linkage rack 62 and a return spring 63. The linkage gear 61 is rotatably installed on the mounting seat 33. A reversing gear 331 is rotatably installed on the bottom wall of the mounting seat 33. The reversing gear 331 and the linkage gear 61 are meshed and driven. The reversing gear 331 and the rotating rod 64 of the blocking arm 6 are connected in series through a belt, so that the rotating rod 64 of the blocking arm 6 and the linkage gear 61 are circumferentially linked (that is, when the linkage gear 61 rotates, it drives the rotating rod 64 to rotate synchronously).

[0040] The linkage rack 62 is slidably installed on the mounting seat 33. The linkage rack 62 and the linkage gear 61 are meshed and driven. The return spring 63 is installed between the linkage rack 62 and the mounting seat 33. Under normal conditions, the return spring 63 forces the blocking arm 6 to block the discharge port 32. A push bar 512 is fixedly connected to the side wall of the swing frame 51. The push bar 512 is arc-shaped. The virtual central axis of the push bar 512 coincides with the central axis of the connecting shaft 12. When the swing frame 51 swings to the first position 13, the push bar 512 pushes the linkage rack 62 and forces the blocking arm 6 to open the discharge port 32.

[0041] Referring to Figure 3 、 Figure 6, Figure 8 In this embodiment, the material storage bin 3 has limiting sliding grooves 34 on both sides of the storage cavity 31, and a limiting strip 7 is slidably installed in each limiting sliding groove 34; the material storage bin 3 is provided with a second driving member. When the swing frame 51 swings to the first position 13 (i.e., when the blocking arm 6 is in the open state), the second driving member forces the two limiting strips 7 to approach each other to clamp the diffusion plate in the storage cavity 31.

[0042] The second driving member includes a pushing block 71 and a compression spring. There are two pushing blocks 71, and both pushing blocks 71 are slidably installed on the bottom wall of the mounting seat 33. The two pushing blocks 71 are arranged corresponding to the two limiting strips 7. Each pushing block 71 is connected to the corresponding limiting strip 7. Each pushing block 71 is fixedly connected with a connecting strip 72. A connecting frame 73 is connected between the connecting strip 72 of the pushing block 71 and the corresponding limiting strip 7, and the connecting strip 72 of the pushing block 71 and the corresponding limiting strip 7 are connected to each other through the connecting frame 73; it should be noted that in this embodiment, the two pushing blocks 71 and the two limiting strips 7 are cross-corresponding. When the two pushing blocks 71 move away from each other, the two limiting strips 7 approach each other.

[0043] The compression spring (not shown in the figure) is arranged between the two pushing blocks 71. The two ends of the compression spring are respectively fixedly connected to the two pushing blocks 71. A pushing channel 711 for the pushing strip 512 to pass through is formed between the two pushing blocks 71. When the swing frame 51 swings to the first position 13, the pushing strip 512 penetrates into the pushing channel 711 and forces the two pushing blocks 71 to move away from each other (i.e., forces the two limiting strips 7 to approach each other). Each pushing block 71 has a guiding surface 712 for the pushing strip 512 to push.

[0044] It should be particularly noted that in this embodiment, the linkage rack 62 is located at the rear end of the pushing channel 711. When the swing frame 51 swings to the first position 13, the pushing strip 512 penetrates into the pushing channel 711 and then pushes the linkage rack 62. That is, when the swing frame 51 swings to the first position 13, the limiting strip 7 first clamps the diffusion plate in the storage cavity 31, and then the blocking arm 6 opens the discharge port 32; when the swing frame 51 takes out the diffusion plate at the discharge port 32, the blocking arm 6 first blocks the discharge port 32, and then the limiting strip 7 releases the diffusion plate in the storage cavity 31, so that the diffusion plate in the storage cavity 31 automatically replenishes to the discharge port 32.

[0045] The implementation principle of Embodiment 1 of this application is as follows: During detection, the swing frame 51 is forced to swing towards the first point 13, so that the nozzle 521 of the adsorption tube 52 adsorbs the diffusion plate at the discharge port 32 of the discharge bin 3. Then, the swing frame 51 is forced to swing towards the second point 14 to transfer the diffusion plate onto the conveyor belt 4; by repeating such actions, the diffusion plates in the discharge bin 3 are transferred onto the conveyor belt 4 one by one, and the conveyor belt 4 sequentially transfers multiple diffusion plates into the detection station 11, enabling the detection head 2 at the detection station 11 to perform defect detection on multiple diffusion plates in sequence, reducing the manual participation when the diffusion plates are moved into or out of the detection station 11, and improving the detection efficiency of the diffusion plates.

[0046] When the swing frame 51 swings to the first point 13, the swing frame 51 first forces the limit bar 7 to clamp the diffusion plate in the storage cavity 31 through the push bar 512, and then forces the blocking arm 6 to open the discharge port 32. When the swing frame 51 takes away the diffusion plate at the discharge port 32, the blocking arm 6 first blocks the discharge port 32, and then the limit bar 7 releases the diffusion plate in the storage cavity 31, so that the diffusion plate in the storage cavity 31 automatically replenishes to the discharge port 32. The combination of the limit bar 7 and the blocking arm 6 greatly improves the discharge stability of the overall structure, achieves the effect of discharging one by one, and improves the operation convenience of the overall structure. Embodiment 2

[0047] This application embodiment discloses a CCD defect detection device for the production of quantum dot diffusion plates.

[0048] The difference between the CCD defect detection device for the production of quantum dot diffusion plates disclosed in this application embodiment and Embodiment 1 is that: Refer to Figure 9 、 Figure 10 In this embodiment, an adsorption seat 8 is fixedly connected to the side wall of the swing frame 51. An adsorption cavity 81 is provided in the adsorption seat 8. The outlet end of the air extraction pipe 82 communicates with the adsorption cavity 81. A connecting pipe 83 is connected between the adsorption tube 52 and the adsorption seat 8. The connecting pipe 83 is a flexible pipe. One end of the connecting pipe 83 communicates with the inside of the adsorption tube 52, and the other end communicates with the adsorption cavity 81. The adsorption tube 52 and the adsorption cavity 81 are connected through the connecting pipe 83.

[0049] The adsorption seat 8 is provided with an opening and closing member. When the swing frame 51 swings to the second position 14, the opening and closing member closes the adsorption cavity 81. When the swing frame 51 swings out of the second position 14, the opening and closing member opens the adsorption cavity 81. The opening and closing member includes a fixed plate 84, a sliding plate 85 and a limiting spring 86. The fixed plate 84 is fixedly installed in the adsorption cavity 81. The fixed plate 84 divides the adsorption cavity 81 into a first partition 811 and a second partition 812. The adsorption pipe 52 communicates with the first partition 811, and the air extraction pipe 82 communicates with the second partition 812. The sliding plate 85 is slidably installed in the second partition 812. A plurality of first communication holes 841 are formed on the plate surface of the fixed plate 84, and a plurality of second communication holes 851 are formed on the plate surface of the sliding plate 85. The plurality of first communication holes 841 and the second communication holes 851 are arranged in a staggered manner.

[0050] The limiting spring 86 is installed between the sliding plate 85 and the inner wall of the adsorption cavity 81. Under normal conditions, the limiting spring 86 forces a gap to exist between the sliding plate 85 and the fixed plate 84 (that is, the first partition 811 and the second partition 812 communicate with each other to open the adsorption cavity 81).

[0051] A sliding rod 87 is fixedly installed on the plate surface of the sliding plate 85 away from the fixed plate 84. One end of the sliding rod 87 penetrates out of the outside of the adsorption seat 8. A blocking block 16 is fixedly installed on the side wall of the installation rack 1. When the swing frame 51 swings to the second position 14, the blocking block 16 forces the sliding block to move into the adsorption cavity 81, and the fixed plate 84 and the movable plate are mutually attached to close the adsorption cavity 81.

[0052] The implementation principle of the second embodiment of this application is as follows: During the process of the swing frame 51 swinging from the second position 14 to the first position 13, at this time the adsorption cavity 81 is opened so that the suction nozzle 521 can adsorb the diffusion plate at the material discharge port 32. After the suction nozzle 521 adsorbs the diffusion plate, it drives the swing frame 51 to swing from the first position 13 to the second position 14. At this time, the adsorption cavity 81 is closed, so that the suction nozzle 521 loses the adsorption effect on the diffusion plate, thereby transferring the diffusion plate to the conveyor belt 4, improving the operation convenience of the overall structure.

[0053] The above is the preferred embodiment of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A CCD defect detection device for the production of quantum dot diffusion plates, characterized in that: It includes an installation rack (1), a detection head (2), a feeding bin (3) and a conveying mechanism. The installation rack (1) has a detection station (11), and the detection head (2) is arranged on the detection station (11); the feeding bin (3) is arranged on one side of the detection head (2), and a storage cavity (31) for storing diffusion plates is provided in the feeding bin (3), and a feeding port (32) communicating with the storage cavity (31) is provided on one side of the feeding bin (3); the conveying mechanism includes a conveyor belt (4) and a transfer assembly (5). The conveyor belt (4) is arranged on the installation rack (1) and is located at the bottom of the detection station (11), and one end of the conveyor belt (4) extends to the bottom of the feeding port (32) of the feeding bin (3); the transfer assembly (5) is arranged between the feeding bin (3) and the conveyor belt (4) for transferring the diffusion plates in the storage cavity (31) to the conveyor belt (4) one by one; a connecting shaft (12) is arranged at the bottom of the feeding bin (3), and the transfer assembly (5) includes a swing frame (51), a suction pipe (52) and a swinging member. The swing frame (51) is rotatably installed on the connecting shaft (12), the suction pipe (52) is connected to the side wall of the swing frame (51), and a suction nozzle (521) for sucking the diffusion plate is arranged on the outer peripheral wall of the suction pipe (52); there are a first position (13) and a second position (14) between the feeding bin (3) and the conveyor belt (4). When the swing frame (51) swings to the first position (13), the suction nozzle (521) moves to the feeding port (32) of the feeding bin (3); when the swing frame (51) swings to the second position (14), the suction nozzle (521) drives the diffusion plate to be transferred onto the conveyor belt (4); the swinging member is used to drive the swing frame (51) to swing reciprocally between the first position (13) and the second position (14).

2. The CCD defect detection device for quantum dot diffusion plate production according to claim 1, characterized in that: The swing frame (51) is connected with a rotating sleeve (511), and the rotating sleeve (511) is rotatably installed on the outer peripheral wall of the connecting shaft (12); the swinging member includes a rotating shaft (53), a rotating cam (54) and a swinging bar (55). The rotating shaft (53) is rotatably arranged at the bottom of the feeding bin (3), the rotating cam (54) is coaxially arranged on the rotating shaft (53), and an eccentric column (541) is arranged on the surface of the rotating cam (54); one end of the swinging bar (55) is connected to the rotating sleeve (511), and a swinging groove (551) for the eccentric column (541) to be embedded is opened on the side wall of the swinging bar (55).

3. The CCD defect detection device for the production of quantum dot diffusion plates according to claim 1, characterized in that: The diffusion plates in the storage cavity (31) normally slide towards the feeding port (32), and the number of diffusion plates accommodated at the feeding port (32) is one; a blocking arm (6) is rotatably arranged at the feeding port (32) of the feeding bin (3). Normally, the blocking arm (6) blocks the feeding port (32); the feeding bin (3) is provided with a first driving member. When the swing frame (51) swings to the first position (13), the first driving member forces the blocking arm (6) to flip to open the feeding port (32).

4. The CCD defect detection device for quantum dot diffusion plate production according to claim 3, characterized in that: An installation base (33) is provided at the bottom of the feeding bin (3), and a pushing bar (512) is provided on the swing frame (51); the first driving member includes a linkage gear (61), a linkage rack (62), and a return spring (63). The linkage gear (61) is rotatably installed on the installation base (33), and a rotating rod (64) is connected to the blocking arm (6). The rotating rod (64) is circumferentially linked with the linkage gear (61); the linkage rack (62) is slidably installed on the installation base (33), and the linkage rack (62) and the linkage gear (61) are meshed and driven; the return spring (63) is arranged between the linkage rack (62) and the installation base (33). When the swing frame (51) swings to the first point (13), the pushing bar (512) pushes the linkage rack (62) and forces the blocking arm (6) to open the feeding port (32).

5. The CCD defect detection device for the production of quantum dot diffusion plates according to claim 4, characterized in that: Limit bars (7) are slidably installed on both sides of the storage cavity (31), and the feeding bin (3) is provided with a second driving member. When the swing frame (51) swings to the first point (13), the second driving member forces the two limit bars (7) to approach each other to clamp the diffusion plate in the storage cavity (31).

6. The CCD defect detection device for quantum dot diffusion plate production according to claim 5, characterized in that: The second driving member includes pushing blocks (71) and compression springs. There are two pushing blocks (71), and both pushing blocks (71) are slidably installed on the installation base (33). The two pushing blocks (71) are arranged corresponding to the two limit bars (7). Each pushing block (71) is connected to the corresponding limit bar (7). When the two pushing blocks (71) move away from each other, the two limit bars (7) approach each other; the compression spring is arranged between the two pushing blocks (71). A pushing channel (711) for the pushing bar (512) to pass through is formed between the two pushing blocks (71). When the swing frame (51) swings to the first point (13), the pushing bar (512) penetrates into the pushing channel (711) and forces the two pushing blocks (71) to move away from each other.

7. The CCD defect detection device for quantum dot diffusion plate production according to claim 6, characterized in that: Each pushing block (71) has a guiding surface (712) for the pushing bar (512) to push.

8. The CCD defect detection device for quantum dot diffusion plate production according to claim 6, characterized in that: The linkage rack (62) is located at the rear end of the pushing channel (711). When the swing frame (51) swings to the first point (13), the pushing bar (512) penetrates into the pushing channel (711) and then pushes the linkage rack (62).

9. The CCD defect detection device for quantum dot diffusion plate production according to claim 1, wherein: The swing frame (51) is connected with an adsorption seat (8). An adsorption cavity (81) is provided in the adsorption seat (8). The adsorption seat (8) is connected with an air extraction pipe (82). The outlet end of the air extraction pipe (82) and the inlet end of the adsorption pipe (52) are both communicated with the adsorption cavity (81); an opening and closing member is provided on the adsorption seat (8). When the swing frame (51) swings to the second point (14), the opening and closing member closes the adsorption cavity (81). When the swing frame (51) swings out of the second point (14), the opening and closing member opens the adsorption cavity (81).

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