A material sorting device

Abstract

The application relates to a material sorting device, belonging to the technical field of polaroid sorting, which comprises a conveying belt and a visual detection mechanism for detecting the polaroid on the conveying belt. A support is arranged on the conveying belt, the visual detection mechanism is arranged on the support, a sliding plate is slidably arranged on the support, the sliding direction of the sliding plate is parallel to the conveying direction of the conveying belt, the sliding plate is located on the side of the visual detection mechanism far from the feeding direction, an abutting rod for pushing the polaroid is slidably arranged on the sliding plate, the abutting rod abuts against the conveying belt, the sliding direction of the abutting rod is perpendicular to the conveying direction of the conveying belt, a sliding member for driving the abutting rod to reciprocatingly slide is arranged on the sliding plate, and a driving member is arranged on the support. The application has the advantage of improving the sorting efficiency.

Description

Technical Field

[0001] This application relates to the field of polarizer sorting technology, and in particular to a material sorting device. Background Technology

[0002] Polarizing films, also known as polarizing filters, are an essential lens for LCD screen imaging. Polarizing films are mass-produced, and during the production process, some defective products may occur, such as those with bubbles, unevenness, indentations, or residual adhesive. Before leaving the factory, defective polarizing films need to be sorted out by a material sorting device.

[0003] In related technologies, a polarizer sorting device includes a first sorting mechanism and a second sorting mechanism arranged sequentially, both of which are independently controlled. A vision inspection mechanism for detecting polarizers is fixedly connected above the first sorting mechanism. The first sorting mechanism includes a first conveyor belt, a first telescopic mechanism, and a first waste bin. The first conveyor belt is fixedly connected to the first telescopic mechanism, and under the action of the first telescopic mechanism, the first conveyor belt can rotate around its starting end at a certain angle. The first waste bin is located diagonally below the first conveyor belt. When the vision inspection mechanism detects a defective polarizer entering the first sorting mechanism, it controls the first telescopic mechanism to drive the first conveyor belt to rotate to the same plane as the first waste bin, causing the defective polarizer to enter the first waste bin, while qualified polarizers enter the finished product bin after passing through the second sorting mechanism.

[0004] Regarding the aforementioned technologies, when the visual inspection mechanism detects a defective polarizer entering the first conveyor belt, it controls the first telescopic mechanism to drive the first conveyor belt to rotate downwards. In order to ensure that the polarizer behind the defective product does not easily enter the first waste box, there is a certain distance between adjacent polarizers entering the sorting device. Therefore, the sorting efficiency needs to be improved. Summary of the Invention

[0005] To help improve sorting efficiency, this application provides a material sorting device.

[0006] The material sorting device provided in this application adopts the following technical solution: A material sorting device includes a conveyor belt and a vision inspection mechanism for detecting polarizers on the conveyor belt. A support is mounted on the conveyor belt, and the vision inspection mechanism is mounted on the support. A sliding plate is slidably mounted on the support, with its sliding direction parallel to the conveyor belt's conveying direction. The sliding plate is located on the side of the vision inspection mechanism away from the feeding direction. An abutment rod for pushing the polarizer is slidably mounted on the sliding plate, abutting against the conveyor belt. The sliding direction of the abutment rod is perpendicular to the conveyor belt's conveying direction. A sliding member is provided on the sliding plate to drive the abutment rod to slide back and forth. A driving member is provided on the support to drive the sliding plate to slide away from the vision inspection mechanism at the same speed as the conveyor belt. A resetting member is provided on the support to pull the sliding plate towards the vision inspection mechanism. Guide plates are provided on both sides of the conveyor belt, corresponding to the positions of the support. Waste collection frames for collecting defective products are distributed below the guide plates.

[0007] By adopting the above technical solution, during the sequential and intermittent conveying of polarizers along the conveyor belt, when the vision inspection mechanism detects a defect on the polarizer, the driving component drives the sliding plate to slide away from the vision inspection mechanism at the same speed as the polarizer on the conveyor belt. This makes the sliding plate relatively stationary with respect to the defective polarizer on the conveyor belt. At this time, the sliding component drives the abutment rod to slide closer to the polarizer, pushing the defective polarizer towards the guide plate. This helps the polarizer enter the waste box along the guide plate, thus achieving the sorting of polarizers. Since the sliding plate moves the abutment rod in unison with the movement of the conveyor belt when the abutment rod pushes the polarizer, the defective polarizer is less likely to become skewed. This reduces the need for a large distance between two adjacent polarizers on the conveyor belt, allowing for the sorting of more polarizers within a certain time and improving sorting efficiency to some extent.

[0008] Preferably, the driving component includes a rack mounted on the sliding plate, a sector gear rotatably mounted on the support, and a first motor mounted on the support. The length direction of the rack is parallel to the sliding direction of the sliding plate. The sector gear is used to mesh with the rack. The sector gear and the output shaft of the first motor are coaxially connected. When the sliding plate is located on the side of the support closer to the vision inspection mechanism, the sector gear is disengaged from the rack. When the abutment rod pushes the polarizer out of the conveyor belt, the sector gear rotates one revolution and disengages from the rack.

[0009] By adopting the above technical solution, when the vision inspection mechanism detects a defect in the polarizer, the first motor is started. The first motor drives the sector gear to rotate, causing the sector gear to mesh with the rack and drive the rack and sliding plate to move away from the vision inspection mechanism. The moving speed is consistent with the moving speed of the polarizer on the conveyor belt, achieving relative stillness between the sliding plate and the polarizer. This makes it less likely for the polarizer to tilt when the abutment rod pushes the defective polarizer on the conveyor belt, which helps to reduce the distance between two adjacent polarizers on the conveyor belt, thereby improving sorting efficiency. After the abutment rod pushes the defective polarizer out of the conveyor belt, the sector gear disengages from the rack, and the sliding plate is quickly reset by the reset component, which helps to facilitate the sorting of the next polarizer.

[0010] Preferably, the reset component includes a tension spring for pulling the slide plate to slide towards the visual inspection mechanism, one end of the tension spring being disposed on the bracket and the other end being disposed on the side of the slide plate near the visual inspection mechanism.

[0011] By adopting the above technical solution, after the sector gear disengages from the rack, the tension spring pulls the sliding plate to move towards the visual inspection mechanism for reset, so that the contact rod can immediately sort the next polarizer. This eliminates the need to set two adjacent polarizers on the conveyor belt too far apart, thereby helping to improve sorting efficiency.

[0012] Preferably, the abutting rod includes two sets of limiting groups that slide on the sliding plate respectively. The arrangement direction of the two sets of limiting groups is perpendicular to the conveying direction of the conveyor belt. Each set of limiting groups includes two limiting rods that are slidably disposed on the sliding plate. The sliding direction of the limiting rods is perpendicular to the conveying direction of the conveyor belt. The arrangement direction of the two limiting rods in one set of limiting groups is perpendicular to the conveying direction of the conveyor belt. Two adjacent limiting rods between the two sets of limiting groups abut against each other. The limiting rods abut against the conveyor belt. The two limiting rods in one set of limiting groups are distributed on both sides of the polarizer. The sliding member is used to drive the limiting rods to move synchronously.

[0013] By adopting the above technical solution, when the conveyor belt is conveying, the polarizer on the conveyor belt is located between two limit rods in one of the limit groups. When a defect is detected in the polarizer, the sliding plate moves at the same speed as the conveyor belt, and the sliding component drives the limit rods to move synchronously toward the side of the limit group away from the conveyor belt. This helps to push the polarizer into the guide plate on the side of the conveyor belt for sorting. At the same time, there are limit rods on both sides of the polarizer, which further ensures that the defective polarizer is not easily skewed during the process of being pushed out, and does not easily affect the polarizers before and after it. This helps to reduce the distance between adjacent polarizers and improve sorting efficiency. The limit groups are set to two groups, so that the limit rods can sort the next polarizer without resetting after pushing the polarizer out of the conveyor belt. This means that adjacent polarizers do not need to be too far apart, thus providing convenience for improving sorting efficiency.

[0014] Preferably, the sliding component includes a screw rotatably mounted on the sliding plate and a second motor mounted on the sliding plate. The rotation axis of the screw is parallel to the sliding direction of the limiting rods. The limiting rods are all threaded onto the screw. The screw is coaxially connected to the output shaft of the second motor.

[0015] By adopting the above technical solution, when the vision inspection mechanism detects that the polarizer has defects, the second motor is started. The second motor drives the screw to rotate, which drives the two limit groups to move synchronously, thereby helping to push the defective polarizer out of the conveyor belt. At the same time, the setting of the two limit groups helps to continuously sort the polarizer, saving time and improving sorting efficiency.

[0016] Preferably, in each set of limiting rods, a bonding piece for bonding with the polarizer is slidably disposed on the side of the two limiting rods that are close to each other. The sliding direction of the bonding piece is parallel to the sliding direction of the limiting rod. The bonding piece abuts against the conveyor belt. The sliding plate is provided with an adjustment component for adjusting the bonding piece to move toward or away from the corresponding limiting rod.

[0017] By adopting the above technical solution, when it is necessary to move the polarizer, the adjusting component adjusts the bonding piece to move towards the corresponding polarizer, so that the bonding piece is in contact with the side wall of the corresponding polarizer. This helps to further limit the movement of the defective polarizer, making it less prone to skew. This also means that adjacent polarizers on the conveyor belt do not need to be too far apart, which helps to improve sorting efficiency. When the limiting rod does not push the polarizer, the adjusting component adjusts the bonding piece to move towards the corresponding limiting rod, providing sufficient space for the movement of the polarizer on the conveyor belt and reducing the possibility of contact with qualified polarizers on the conveyor belt.

[0018] Preferably, the adjustment assembly includes a spring disposed within a limiting rod, a pull rope disposed on the side of the bonding piece near the corresponding limiting rod, and a pulling member disposed on a sliding plate. The spring is used to push the bonding piece to move away from the corresponding limiting rod. One end of the spring is disposed within the limiting rod, and the other end is disposed on the side of the bonding piece near the corresponding limiting rod. The pull rope is used to pull the bonding piece to move towards the corresponding limiting rod, and the pulling member is used to pull or release the pull rope.

[0019] By adopting the above technical solution, when it is necessary to move the polarizer, the pull rope is released by the puller. At this time, the spring pushes the bonding piece to move away from the corresponding limit bar, so that the bonding piece is in contact with the side wall of the defective polarizer. This helps to further limit the polarizer, so that adjacent polarizers on the conveyor belt do not need to be too far apart, thereby helping to improve sorting efficiency. When the limit bar does not push the polarizer, the pull rope is pulled by the puller. The pull rope pulls the bonding piece to move closer to the corresponding limit bar, providing sufficient space for the conveyor belt to transport the polarizer and reducing the possibility of contact with qualified polarizers on the conveyor belt.

[0020] Preferably, the pulling component includes an iron block slidably disposed within a limiting rod and a magnet disposed on a sliding plate. The sliding direction of the iron block is vertical. The end of the pull rope away from the bonding piece slides out of the limiting rod and connects to the iron block. Four magnets are provided, and the arrangement direction of the four magnets is parallel to the arrangement direction of the limiting rods. The distance between adjacent magnets on one side is equal to the distance between two limiting rods in a set of limiting rods. The four magnets are symmetrically arranged along the center line of the conveyor belt. The magnets are located above the limiting rods and are used to attract and cooperate with the iron block. The attraction force between the magnet and the iron block is greater than the sum of the spring force and the weight of the iron block. When the two limiting rods of any set of limiting rods are located on both sides of the polarizer on the conveyor belt, the positions of the iron block and the magnet on the limiting rod correspond.

[0021] By adopting the above technical solution, when the polarizer does not need to be pushed and any set of limit rods are located on both sides of the polarizer on the conveyor belt, the iron block on the limit rod corresponds to the magnet. At this time, the magnet attracts the iron block and moves it upward. The iron block pulls the pull rope, causing the pull rope to pull the bonding piece to slide towards the corresponding limit rod, thus providing sufficient space for the transmission of the polarizer on the conveyor belt. When a defect is detected in the polarizer, and the limit rod moves on the sliding plate, the iron block disengages from the magnet, the tension of the pull rope on the bonding piece decreases, and the spring pushes the corresponding bonding piece to move away from the corresponding limit rod, so that the bonding piece adheres to the side wall of the polarizer. This helps to prevent the polarizer from shifting and affecting the polarizers in adjacent positions, thus facilitating the reduction of the distance between adjacent polarizers on the conveyor belt and helping to improve sorting efficiency.

[0022] Preferably, the side of the bonding piece away from the corresponding limiting rod is covered with a Teflon layer.

[0023] By adopting the above technical solution, the Teflon layer helps to reduce the friction between the laminating sheet and the polarizer, thus reducing the possibility of wear on the polarizer.

[0024] In summary, this application includes the following beneficial technical effects: When the vision inspection mechanism detects a defect on the polarizer, a drive mechanism drives a sliding plate to slide away from the vision inspection mechanism at the same speed as the polarizer on the conveyor belt. This keeps the sliding plate and the defective polarizer relatively stationary. At this time, the sliding mechanism drives abutment rods to slide closer to the polarizer, pushing the defective polarizer towards the guide plate. This helps the polarizer enter the waste box along the guide plate, thus achieving polarizer sorting. Because the sliding plate moves the abutment rod in unison with the conveyor belt when the abutment rod pushes the polarizer, the defective polarizer is less likely to become skewed. This reduces the need for a large distance between adjacent polarizers on the conveyor belt, allowing more polarizers to be sorted within a certain time and improving sorting efficiency to some extent. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0026] Figure 2 This is a partial structural cross-sectional view of an embodiment of this application.

[0027] Figure 3 This is a partial structural cross-sectional view of an embodiment of this application.

[0028] Figure 4 yes Figure 3 Enlarged view of section A.

[0029] Explanation of reference numerals in the attached drawings: 1. Conveyor belt; 11. Conveyor belt; 12. Mounting plate; 2. Vision inspection mechanism; 3. Bracket; 31. Column; 32. Top plate; 4. Sliding plate; 5. Sliding component; 51. Screw; 52. Second motor; 6. Drive component; 61. Rack; 62. Sector gear; 63. First motor; 7. Guide plate; 71. Horizontal section; 72. Inclined section; 8. Waste box; 9. Tension spring; 10. Limiting group; 101. Limiting rod; 13. Adhesive piece; 14. Spring; 15. Pull rope; 16. Pulling component; 161. Iron block; 162. Magnet; 17. Support rod; 18. Guide block; 19. Guide groove; 20. Slide groove; 21. Support plate; 22. Slide cavity; 23. Telescopic rod; 24. Moving groove; 25. Channel. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0031] This application discloses a material sorting device. (Refer to...) Figure 1 The material sorting device includes a conveyor belt 1 and a vision inspection mechanism 2 for detecting polarizers on the conveyor belt 1. The conveyor belt 1 has a conveyor belt 11 and mounting plates 12 on both sides of the conveyor belt 11. The upper surface of the conveyor belt 11 is flush with the upper surface of the mounting plates 12. A bracket 3 is fixedly mounted on the mounting plate 12 of the conveyor belt 1. In this embodiment, two brackets 3 are provided, and the vision inspection mechanism 2 corresponds to one bracket 3. The bracket 3 includes two uprights 31 symmetrically fixed on the mounting plates 12 on both sides and a top plate 32 fixed on the four uprights 31. A support rod 17 is fixed on the top plate 32 facing towards the conveyor belt 1. The vision inspection mechanism 2 is fixedly mounted on the support rod 17 on the corresponding bracket 3. The vision inspection mechanism 2 is located above the conveyor belt 1. The provision of two brackets 3 helps to sort recyclable defective products from non-recyclable defective products. The conveyor belt 1 and the vision inspection mechanism 2 in this embodiment are both prior art, and their structures will not be described in detail here.

[0032] Reference Figure 2 and Figure 3A sliding plate 4 is slidably disposed below the top plate 32. The sliding direction of the sliding plate 4 is parallel to the conveying direction of the conveyor belt 1, and the length direction of the sliding plate 4 is perpendicular to the length direction of the conveyor belt 1. The sliding plate 4 spans the top plate 32 and is located on the side of the corresponding vision inspection mechanism 2 away from the feeding direction. Two guide blocks 18 are fixed along the length direction of the sliding plate 4. The cross-section of the guide block 18 is T-shaped. A guide groove 19 is provided on the side of the top plate 32 near the conveyor belt 1 to slide and cooperate with the guide block 18, which helps to improve the sliding effect of the sliding plate 4. An abutment rod for pushing the polarizer is slidably disposed on the sliding plate 4. The abutment rod includes two sets of limiting groups 10 that slide on the sliding plate 4 respectively. The arrangement direction of the two sets of limiting groups 10 is perpendicular to the conveying direction of the conveyor belt 1. Each set of limiting groups 10 includes two limiting rods 101 that are slidably disposed on the sliding plate 4. The sliding direction of the limiting rods 101 is parallel to the length direction of the sliding plate 4. Along the length of the plate 4, the longitudinal section of the limiting rod 101 is inverted T-shaped. The arrangement direction of the two limiting rods 101 in a set of limiting groups 10 is parallel to the length of the sliding plate 4. The sliding plate 4 has a sliding groove 20 on the side near the conveyor belt 1 that slides and engages with the top of the limiting rod 101. The two adjacent limiting rods 101 between the two limiting groups 10 abut against each other. The limiting rods 101 are all used to abut against the conveyor belt 1. The polarizer on the conveyor belt 1 is located between the two limiting rods 101 in any set of limiting groups 10. The sliding plate 4 is provided with a sliding member 5 for driving the limiting rods 101 to slide synchronously back and forth. The top plate 32 is provided with a driving member 6 for driving the sliding plate 4 to slide away from the vision inspection mechanism 2 and the sliding speed is the same as the moving speed of the polarizer on the conveyor belt 1. The top plate 32 is provided with a reset member for pulling the sliding plate 4 to slide closer to the vision inspection mechanism 2.

[0033] Reference Figure 1 and Figure 2 Guide plates 7 are fixedly connected to the mounting plates 12 on both sides of the conveyor belt 1. The guide plates 7 on both sides correspond to the positions of the top plate 32. The guide plate 7 includes a horizontal section 71 fixed to the side of the mounting plate 12 and an inclined section 72 fixedly connected to the side of the horizontal section 71 away from the conveyor belt 1. The upper surface of the horizontal section 71 is flush with the upper surface of the conveyor belt 11. The distance from the side of the horizontal section 71 near the inclined section 72 to the mounting plate 12 is less than the width of the polarizer. The side of the inclined section 72 away from the conveyor belt 1 is inclined downward. Waste boxes 8 for collecting defective products are distributed at the bottom of the inclined section 72.

[0034] Reference Figure 2To facilitate the sliding of the sliding plate 4 away from the corresponding visual inspection mechanism 2, a support plate 21 is fixed on the top plate 32. The driving component 6 includes a rack 61 fixedly mounted on the top wall of the sliding plate 4, a sector gear 62 rotatably mounted on the top plate 32, and a first motor 63 fixedly mounted on the support plate 21. The length direction of the rack 61 is parallel to the sliding direction of the sliding plate 4. The sector gear 62 is used to mesh with the rack 61. The output shafts of the sector gear 62 and the first motor 63 are coaxially connected. When the sliding plate 4 is located on the side of the bracket 3 close to the visual inspection mechanism 2, the sector gear 62 is disengaged from the rack 61. When the limiting rod 101 pushes the polarizer off the conveyor belt 1, the sector gear 62 rotates one revolution and disengages from the rack 61.

[0035] Reference Figure 2 The reset component includes a tension spring 9 for pulling the slide plate 4 to slide toward the visual inspection mechanism 2. The tension spring 9 is located in the guide groove 19, and the extension direction of the tension spring 9 is parallel to the sliding direction of the slide plate 4. One end of the tension spring 9 is fixedly connected to the side wall of the guide groove 19 near the visual inspection mechanism 2, and the other end is fixedly connected to the guide block 18 near the visual inspection mechanism 2.

[0036] Reference Figure 1 and Figure 3 The sliding component 5 includes a screw 51 rotatably disposed within the sliding groove 20 and a second motor 52 fixedly mounted on one side of the sliding plate 4. The rotation axis of the screw 51 is parallel to the sliding direction of the sliding plate 4. Limiting rods 101 are all threadedly connected to the screw 51, and the screw 51 is coaxially connected to the output shaft of the second motor 52. In this embodiment, the visual inspection mechanism 2, the first motor 63, and the second motor 52 are all connected to an external controller.

[0037] During operation, the polarizers are conveyed sequentially and regularly along the conveyor belt 1. At this time, the sorting device is in its initial state, that is, the sliding plate 4 is located on the side of the top plate 32 close to the vision inspection mechanism 2, the tension spring 9 is in its natural state, the sector gear 62 and the rack 61 are disengaged, and the polarizers on the conveyor belt 1 are located between the two limit rods 101 in any set of limit groups 10.

[0038] When the vision inspection mechanism 2 detects a defect in the polarizer, it sends a signal to an external controller. The external controller then starts the first motor 63 and the second motor 52. The first motor 63 drives the sector gear 62 to rotate, which in turn meshes with the rack 61, causing the rack 61 and the sliding plate 4 to move away from the vision inspection mechanism 2 at the same speed as the polarizer on the conveyor belt 1. The tension spring 9 is stretched, keeping the sliding plate 4 relatively stationary with respect to the polarizer on the conveyor belt 1. The second motor 52 drives the screw 51 to rotate, which in turn drives the four limit rods 101 to move synchronously toward the side opposite to the conveyor belt 1. Since the limit rods 101 are in contact with the conveyor belt 1, and the polarizer has a certain thickness, the two limit rods 101 are located on either side of the polarizer. The side limit rod 101 can push the polarizer to slide towards the direction close to the guide plate 7, so that the polarizer enters the waste box 8 for collection in sequence along the horizontal section 71 and the inclined section 72. Then, the two limit rods 101 of the other limit group 10 move to both sides of the polarizer on the conveyor belt 1, and the second motor 52 stops working. Then, the sector gear 62 rotates until it disengages from the rack 61. The first motor 63 continues to drive the sector gear 62 to rotate to the initial position. The first motor 63 stops working, and the sector gear 62 is still disengaged from the rack 61. Then, the tension spring 9 immediately pulls the sliding plate 4 to slide towards the direction close to the vision inspection mechanism 2 to reset it. It can restore the initial state in a short time. At this time, the polarizer at the next position is conveyed between the limit rods 101, which facilitates the sorting of adjacent polarizers.

[0039] When the visual inspection mechanism 2 continues to detect defective products, the external controller controls the first motor 63 and the second motor 52 to start. The first motor 63 drives the sector gear 62 to rotate, and the second motor 52 drives the screw 51 to rotate in the opposite direction. Repeating the above steps can push the polarizer towards the guide plate 7 on the other side. By repeating this process, the polarizer is sorted. Since the sliding plate 4 moves at the same speed as the polarizer when the limit rod 101 pushes the polarizer, the defective polarizer is less likely to skew and touch the adjacent polarizer during the process of being pushed out. This can reduce the distance between adjacent polarizers on the conveyor belt 1 to a certain extent, so that the machine does not need to stop for sorting, and the sorting quantity can be increased within a certain period of time, thereby improving sorting efficiency.

[0040] Reference Figure 3 and Figure 4Each set of limiting rods 101 in each limiting group 10 has a sliding cavity 22 on one side of each other. The sliding cavity 22 penetrates the bottom wall of the corresponding limiting rod 101. A bonding piece 13 for bonding with the polarizer is slidably disposed in the sliding cavity 22. The sliding direction of the bonding piece 13 is parallel to the sliding direction of the limiting rod 101. A telescopic rod 23 is installed between the bonding piece 13 and the bottom wall of the corresponding sliding cavity 22. The telescopic direction of the telescopic rod 23 is parallel to the sliding direction of the bonding piece 13, which helps to guide the sliding of the bonding piece 13. The bonding piece 13 abuts against the upper surface of the conveyor belt 1. The side of the bonding piece 13 away from the corresponding limiting rod 101 is covered with a Teflon layer (not shown in the figure), which helps to reduce wear on the polarizer. The sliding plate 4 is provided with an adjustment component for adjusting the movement of the bonding piece 13 toward or away from the corresponding limiting rod 101.

[0041] Reference Figure 3 and Figure 4The adjustment assembly includes a spring 14 disposed within the sliding cavity 22, a pull rope 15 fixedly connected to the side of the bonding piece 13 near the corresponding sliding cavity 22, and a pulling member 16 disposed on the sliding plate 4. The spring 14 is used to push the bonding piece 13 toward the direction of the corresponding polarizer. The extension direction of the spring 14 is parallel to the sliding direction of the bonding piece 13. One end of the spring 14 is fixed to the bottom wall of the sliding cavity 22, and the other end is fixedly connected to the side of the bonding piece 13 near the corresponding sliding cavity 22. The pull rope 15 is used to pull the bonding piece 13 toward the direction of the polarizer. The puller 16 moves towards the corresponding sliding cavity 22, and is used to pull or release the pull rope 15. The limiting rod 101 has a moving groove 24 on the side near the screw 51. The puller 16 includes an iron block 161 slidably disposed in the moving groove 24 and a magnet 162 fixedly connected to the bottom wall of the sliding groove 20. The sliding direction of the iron block 161 is set in the vertical direction. The end of the pull rope 15 away from the bonding piece 13 slides out of the limiting rod 101 away from the bonding piece 13 and then moves into the limiting rod 101 and connects with the iron block 161. The limiting rod 101 has a channel 25 for the pull rope 15 to slide through. The channel 25 is connected to the moving groove 24. Magnets 162 are located above the limiting rod 101. Four magnets 162 are fixedly installed. The arrangement direction of the four magnets 162 is parallel to the arrangement direction of the limiting rod 101. The distance between adjacent magnets 162 on one side is equal to the distance between two limiting rods 101 in a limiting group 10. The four magnets 162 are symmetrically arranged along the center line of the conveyor belt 1. The two magnets in the middle are... The width of the iron block 162 is greater than the width of the magnets 162 on both sides. The magnets 162 are used to attract and cooperate with the iron block 161. The top of the limiting rod 101 is used to abut against the magnet 162, so that the iron block 161 is not easy to move out of the moving groove 24. The attraction force between the magnet 162 and the iron block 161 is greater than the sum of the pushing force of the spring 14 and the weight of the iron block 161. When the two limiting rods 101 of a set of limiting groups 10 are located on both sides of the polarizer on the conveyor belt 1, the moving groove 24 on the limiting rod 101 and the position of the magnet 162 correspond.

[0042] During operation, when the limit rod 101 is in its initial state, the two limit rods 101 of any set of limit groups 10 are located on both sides of the polarizer on the conveyor belt 1. At this time, the moving groove 24 on the limit rod 101 corresponds to the position of the magnet 162. The magnet 162 can attract the iron block 161 and pull the pull rope 15 upward, causing the pull rope 15 to pull the bonding piece 13 towards the direction close to the corresponding sliding cavity 22. At this time, the spring 14 is compressed, thereby providing sufficient space for the conveyor belt 1 to transport the polarizer, making it difficult for the bonding piece 13 to come into contact with the qualified polarizer; when the limit rod 101 is in its initial state, the two limit rods 101 of any set of limit groups 10 are located on both sides of the polarizer on the conveyor belt 1. When the defective polarizer is slidably pushed, the limiting rod 101 slides on the sliding plate 4, causing the iron block 161 and the magnet 162 to separate. The iron block 161 falls to the bottom wall of the moving groove 24 under gravity, and the tension of the pull rope 15 on the bonding piece 13 decreases. At this time, the spring 14 pushes the bonding piece 13 to move away from the corresponding sliding cavity 22, so that the bonding piece 13 abuts against the polarizer, thereby further limiting the movement of the polarizer and reducing the possibility of the polarizer tilting. This allows adjacent polarizers on the conveyor belt 1 to be less far apart, which helps to improve sorting efficiency.

[0043] The implementation principle of this application embodiment is as follows: During operation, the polarizer is conveyed sequentially and regularly along the conveying direction of the conveyor belt 1. When the vision inspection mechanism 2 detects a defect in the polarizer, it sends a signal to the external controller. The external controller controls the first motor 63 and the second motor 52 to start. The first motor 63 drives the sector gear 62 to rotate. The sector gear 62 begins to mesh with the rack 61 and drives the rack 61 and the sliding plate 4 to move away from the vision inspection mechanism 2. The moving speed is the same as the moving speed of the polarizer, stretching the tension spring 9 so that the sliding plate 4 is relatively stationary with the polarizer on the conveyor belt 1. The second motor 52 drives the screw 51 to rotate. The screw 51 drives the four limit rods 101 to move synchronously towards the side away from the limit group 10 outside the conveyor belt 1, causing the iron block 161 and the magnet 162 to separate. The tension of the pull rope 15 on the bonding piece 13 decreases. At this time, the spring 14 pushes the bonding piece 13 away from the corresponding sliding piece. The cavity 22 moves in the direction that makes the bonding piece 13 come into contact with the polarizer. At this time, the bonding pieces 13 located on both sides of the polarizer push the polarizer to slide towards the guide plate 7, so that the polarizer enters the waste box 8 for collection along the horizontal section 71 and the inclined section 72 in sequence. Then, the two limit rods 101 of the other limit group 10 move to both sides of the polarizer on the conveyor belt 1. At this time, the second motor 52 stops working, and the limit rods 101 correspond to the position of the magnet 162. The magnet 162 can attract the iron block 161 and pull the pull rope 15 to slide upward, so that the pull rope 15 pulls the bonding piece 13 to move towards the corresponding sliding cavity 22. Then, the sector gear 62 rotates until it disengages from the rack 61. The first motor 63 continues to drive the sector gear 62 to rotate to the initial position. The first motor 63 stops working, and the sector gear 62 is still disengaged from the rack 61. At this time, the tension spring 9 immediately pulls the sliding plate 4 to slide towards the visual inspection mechanism 2 to reset, and can restore the initial state in a short time.

[0044] When the visual inspection mechanism 2 continues to detect defective products, the external controller controls the first motor 63 and the second motor 52 to start. The first motor 63 drives the sector gear 62 to rotate, and the second motor 52 drives the screw 51 to rotate in the opposite direction. By repeating the above steps, the polarizer can be pushed onto the guide plate 7 on the other side. This process is repeated to sort the polarizers. This device makes it less likely for defective products with defects to skew and touch adjacent polarizers during movement, thereby reducing the distance between adjacent polarizers on the conveyor belt 1 to a certain extent, increasing the sorting quantity within a certain time, and eliminating the need to stop the machine for sorting, which helps to improve sorting efficiency.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A material sorting device, comprising a conveyor belt (1) and a vision inspection mechanism (2) for inspecting polarizers on the conveyor belt (1), characterized in that: A support (3) is mounted on the conveyor belt (1), and the vision inspection mechanism (2) is mounted on the support (3). A sliding plate (4) is slidably mounted on the support (3). The sliding direction of the sliding plate (4) is parallel to the conveying direction of the conveyor belt (1). The sliding plate (4) is located on the side of the vision inspection mechanism (2) away from the feeding direction. An abutment rod for pushing the polarizer is slidably mounted on the sliding plate (4). The abutment rod abuts against the conveyor belt (1), and the sliding direction of the abutment rod is perpendicular to the conveying direction of the conveyor belt (1). The sliding plate (4) is provided with a... A sliding member (5) drives the abutment rod to slide back and forth. A driving member (6) is provided on the bracket (3). The driving member (6) is used to drive the sliding plate (4) to slide away from the visual inspection mechanism (2) and the speed of the conveyor belt (1) is the same. A reset member is provided on the bracket (3) to pull the sliding plate (4) to slide closer to the visual inspection mechanism (2). A guide plate (7) is provided on both sides of the conveyor belt (1). The two guide plates (7) are positioned corresponding to the bracket (3). A waste box (8) for collecting defective products is distributed below the guide plate (7). The abutting rod includes two sets of limiting groups (10) that slide on the sliding plate (4) respectively. The arrangement direction of the two sets of limiting groups (10) is perpendicular to the conveying direction of the conveyor belt (1). Each set of limiting groups (10) includes two limiting rods (101) that are slidably disposed on the sliding plate (4). The sliding direction of the limiting rods (101) is perpendicular to the conveying direction of the conveyor belt (1). The arrangement direction of the two limiting rods (101) in one set of limiting groups (10) is perpendicular to the conveying direction of the conveyor belt (1). The two adjacent limiting rods (101) between the two sets of limiting groups (10) abut against each other. The limiting rods (101) abut against the conveyor belt (1). The two limiting rods (101) in one set of limiting groups (10) are distributed on both sides of the polarizer. The sliding member (5) is used to drive the limiting rods (101) to move synchronously. The sliding component (5) includes a screw (51) rotatably mounted on the sliding plate (4) and a second motor (52) mounted on the sliding plate (4). The rotation axis of the screw (51) is parallel to the sliding direction of the limiting rod (101). The limiting rods (101) are all threadedly connected to the screw (51). The screw (51) is coaxially connected to the output shaft of the second motor (52). In each of the two limiting rods (101) of the limiting group (10), a bonding piece (13) for bonding with the polarizer is slidably provided on the side of the two limiting rods (101) that are close to each other. The sliding direction of the bonding piece (13) is parallel to the sliding direction of the limiting rod (101). The bonding piece (13) abuts against the conveyor belt (1). The sliding plate (4) is provided with an adjustment component for adjusting the bonding piece (13) to move toward or away from the corresponding limiting rod (101). The adjustment assembly includes a spring (14) disposed in the limiting rod (101), a pull rope (15) disposed on the side of the bonding piece (13) near the corresponding limiting rod (101), and a pull member (16) disposed on the sliding plate (4). The spring (14) is used to push the bonding piece (13) to move away from the corresponding limiting rod (101). One end of the spring (14) is disposed in the limiting rod (101), and the other end is disposed on the side of the bonding piece (13) near the corresponding limiting rod (101). The pull rope (15) is used to pull the bonding piece (13) to move towards the corresponding limiting rod (101). The pull member (16) is used to pull or release the pull rope (15). The pulling component (16) includes an iron block (161) slidably disposed within the limiting rod (101) and a magnet (162) disposed on the sliding plate (4). The sliding direction of the iron block (161) is vertical. The end of the pull rope (15) away from the bonding piece (13) slides out of the limiting rod (101) and connects to the iron block (161). There are four magnets (162), and the arrangement direction of the four magnets (162) is parallel to the arrangement direction of the limiting rod (101). The distance between adjacent magnets (162) on one side is equal to the distance between two limiting rods in a set of limiting groups (10). The distance between (101) is such that the four magnets (162) are symmetrically arranged along the center line of the conveyor belt (1). The magnets (162) are located above the limiting rods (101). The magnets (162) are used to attract and cooperate with the iron block (161). The attraction force between the magnets (162) and the iron block (161) is greater than the sum of the pushing force of the spring (14) and the weight of the iron block (161). When the two limiting rods (101) of any group of limiting rods (101) are located on both sides of the polarizer on the conveyor belt (1), the positions of the iron block (161) and the magnets (162) on the limiting rods (101) correspond.

2. The material sorting device according to claim 1, characterized in that: The driving component (6) includes a rack (61) mounted on a sliding plate (4), a sector gear (62) rotatably mounted on a bracket (3), and a first motor (63) mounted on the bracket (3). The length direction of the rack (61) is parallel to the sliding direction of the sliding plate (4). The sector gear (62) is used to mesh with the rack (61). The output shafts of the sector gear (62) and the first motor (63) are coaxially connected. When the sliding plate (4) is located on the side of the bracket (3) close to the vision inspection mechanism (2), the sector gear (62) is disengaged from the rack (61). When the abutment rod pushes the polarizer out of the conveyor belt (1), the sector gear (62) rotates one revolution and disengages from the rack (61).

3. The material sorting device according to claim 1, characterized in that: The reset component includes a tension spring (9) for pulling the slide plate (4) to slide toward the visual inspection mechanism (2). One end of the tension spring (9) is disposed on the bracket (3), and the other end is disposed on the side of the slide plate (4) near the visual inspection mechanism (2).

4. The material sorting device according to claim 1, characterized in that: The side of the bonding piece (13) away from the corresponding limiting rod (101) is covered with a Teflon layer.

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