Automatic sorting device for single crystal edge skins
By designing an automatic sorting device for single crystal edge skins and using visual inspection and sorting mechanisms to achieve automatic sorting of single crystal edge skins, the problems of manual sorting errors and low efficiency are solved, sorting accuracy and efficiency are improved, and safety risks are reduced.
Patent Information
- Application Number
- CN202422639373.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In the prior art, the sorting of single crystal edge skins relies on manual operation, which is prone to sorting errors, has low work efficiency and poses safety risks.
An automatic sorting device for single crystal edge skins was designed, which included a station for sorting, a mark recognition station, and a sorted station. The sorting and transportation mechanisms were used to realize the automatic sorting and transportation of single crystal edge skins. The visual inspection device was used to identify the classification mark and position to ensure the sorting accuracy.
The automatic sorting of single crystal edge skins is realized, which improves work efficiency, reduces labor costs and safety hazards, and ensures the accuracy of sorting.
Smart Images
Figure CN223405405U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of photovoltaics, and in particular relates to an automatic sorting device for single crystal edge skins. Background Art
[0002] As single crystals grow, their electrical parameters decay. Significant differences in electrical parameters exist between the head and tail of a single crystal. After the truncation process, the single crystals are separated into multiple segments with varying electrical parameters and graded and classified based on minority carrier lifetime and carbon content. The scraps left after squaring the single crystals are collected and stored in fixed pallet boxes, transported by AGVs to the sorting and return area. Manual sorting is performed using portable detectors, which can lead to errors, low efficiency, and safety risks. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides an automatic sorting device for single crystal edge skins, which effectively solves the technical problems of manual sorting of single crystal edge skins, which are prone to sorting errors, low work efficiency, and safety hazards, and overcomes the shortcomings of the existing technology.
[0004] The technical solution adopted by the utility model is: a single crystal edge skin automatic sorting device, characterized by comprising:
[0005] The sorting station is used to place the single crystal edges to be sorted;
[0006] A marking and identification station is used to identify the classification mark on the edge of the single crystal;
[0007] A sorted station, corresponding to the classification identification setting, is used to classify and place the sorted single crystal edges;
[0008] The sorting mechanism is used to move the single crystal edge skin between the to-be-sorted station, the mark identification station and the sorted station.
[0009] Optionally, a transport mechanism is further included for transporting the single crystal edges to be sorted to the station to be sorted or transporting the single crystal edges that have been sorted away from the sorted station.
[0010] Optionally, the to-be-sorted station, mark recognition station and sorted station are arranged side by side, and transportation channels are provided on both sides of the sorting station, mark recognition station and sorted station, and the transportation mechanism performs transportation on the transportation channels.
[0011] Optionally, a buffer area is provided at the end of the transport channel.
[0012] Optionally, a first visual detection device is provided at the station to be sorted, for detecting the placement position and angle of the single crystal edge skin.
[0013] Optionally, a driving device is provided on the first visual inspection device, and the driving device can drive the first visual inspection device to move horizontally along the station to be sorted.
[0014] Optionally, a proximity switch is provided on the station to be sorted, for detecting whether the single crystal edge skin is placed on the station to be sorted.
[0015] Optionally, a second visual detection device is provided at both ends of the mark recognition station for identifying the classification mark.
[0016] Optionally, a material box is provided at the sorted workstation, and the material box is arranged corresponding to the classification identification and is used to place the sorted single crystal edges.
[0017] The advantages and positive effects of the utility model are: due to the adoption of the above technical solution, the automatic sorting and transportation of single crystal edge skins are realized instead of manual labor, which ensures the accuracy of sorting, improves work efficiency, reduces labor costs, and reduces safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the overall structure of a single crystal edge skin automatic sorting device according to an embodiment of the present utility model.
[0019] In the picture:
[0020] 1. To-be-sorted station 2. Marking and identification station 3. Sorted station
[0021] 4. Sorting mechanism 5. Transport mechanism 6. Transport channel
[0022] 7. Ground rail 8. Entrance 9. Exit
[0023] 10. Buffer area 11. First visual inspection device 12. Cylinder
[0024] 13. Proximity switch 14. Second visual detection device 15. Sorting table
[0025] 16. Material box DETAILED DESCRIPTION
[0026] An embodiment of the present utility model provides an automatic sorting device for single crystal edge skins. The embodiment of the present utility model is described below with reference to the accompanying drawings.
[0027] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.
[0028] like Figure 1 As shown, an embodiment of the present invention provides an automatic sorting device for single crystal offcuts, comprising a station 1 to be sorted, a marking recognition station 2, a sorted station 3, and a sorting mechanism 4. Station 1 to be sorted is used to place single crystal offcuts to be sorted, marking recognition station 2 is used to identify the classification marks on the single crystal offcuts, and sorted station 3 is provided corresponding to the classification marks and is used to classify and place the sorted single crystal offcuts. Sorting mechanism 4 is used to move single crystal offcuts between station 1 to be sorted, marking recognition station 2, and sorted station 3. Preferably, a transport mechanism 5 is also included for transporting single crystal offcuts to be sorted to station 1 to be sorted or transporting sorted single crystal offcuts away from sorted station 3. Transport mechanism 5 transports a full box of single crystal offcuts to be sorted to station 1. Sorting mechanism 4 moves each single crystal offcut to mark recognition station 2, which identifies the classification mark on the single crystal offcuts. Sorting mechanism 4 then moves the identified single crystal offcuts to sorted station 3 corresponding to the classification mark. Transport mechanism 5 then transports the sorted single crystal offcuts away from sorted station 3. In this embodiment, transport mechanism 5 is specifically an AGV, which automatically transports the single crystal offcuts. Sorting mechanism 4 is specifically a six-axis robot.
[0029] Specifically, the to-be-sorted station 1, the mark recognition station 2 and the sorted station 3 are arranged side by side, and a transport channel 6 is provided on both sides of the to-be-sorted station 1, the mark recognition station 2 and the sorted station 3, and the transport mechanism 5 transports on the transport channel 6.
[0030] In this embodiment, there are two stations 1 to be sorted, one marking recognition station 2 and a plurality of sorted stations 3. The two stations 1 to be sorted are arranged adjacent to each other, and the marking recognition station 2 is arranged side by side near the station 1 to be sorted. A plurality of sorted stations 3 are arranged corresponding to the classification identification, some of which are arranged side by side with the marking recognition station 2 and the station 1 to be sorted, and some are arranged in a separate row. In order to facilitate the movement of single crystal edges, a sorting mechanism 4 is arranged between the two rows of stations. A ground rail 7 is provided at the bottom of the sorting mechanism 4, and the ground rail 7 is arranged along the direction in which the stations are arranged side by side. The sorting mechanism 4 can move the single crystal edges between the station 1 to be sorted, the marking recognition station 2 and the sorted station 3 along the ground rail 7. In order to facilitate the transportation of the single crystal edges and ensure transportation safety, two one-way transport channels 6 are opened on both sides of the two rows of stations. One end of the transport channel 6 is provided with an entrance 8, and the other end is provided with an exit 9. The transport mechanism 5 can only enter from the entrance 8 and leave from the exit 9.
[0031] Preferably, a buffer area 10 is provided at the end of the transport channel 6 for caching the single crystal shavings to be transported. The specific form of the buffer area 10 is not limited and can be a buffer table or a buffer rack.
[0032] Specifically, a first visual inspection device 11 is provided at the station 1 to be sorted, for detecting the placement and angle of single crystal offcuts. The first visual inspection device 11 is movable horizontally along the station 1 to be sorted. In this embodiment, the transport mechanism 5 transports a full box of single crystal offcuts to the station 1 to be sorted. To facilitate the grasping of the single crystal offcuts by the sorting mechanism 4, a first visual device, specifically a 3D camera, is installed above the station 1 to be sorted. This device captures the position and angle of the single crystal offcuts placed in the bin 16, facilitating grasping and positioning by the sorting mechanism 4. In this embodiment, two stations 1 to be sorted are provided. The first visual inspection device 11 is positioned above the two stations 1 to be sorted and is driven by a cylinder 12 to move horizontally along the two stations 1 to be sorted. When the single crystal offcuts at one station 1 are sorted, the first visual inspection device 11 detects that the single crystal offcuts in the bin have been sorted and interacts with the transport mechanism 5, which then transports the empty bin away. The first visual inspection device 11 moves horizontally above another station 1 to be sorted, inspecting the single crystal edge skin at the other station 1. In certain embodiments, because some single crystals are assembled into bars made of multiple short single crystal segments, some single crystal edge skins are also composed of multiple segments. Before sorting by electrical parameters, the first visual inspection device is used to detect the number of segments in the single crystal edge skin. Sorting is performed first based on the number of segments, and then electrical parameter sorting is performed on the single crystal edge skins that are not assembled into bars.
[0033] Preferably, a proximity switch 13 is provided at the station 1 to be sorted, for detecting whether single crystal offcuts are placed at the station 1. In this embodiment, when the transport mechanism 5 transports a full box of single crystal offcuts to the station 1 to be sorted, the proximity switch 13 detects the box, and the sorting mechanism 4 begins sorting.
[0034] Specifically, a second visual inspection device 14 is provided at both ends of the mark recognition station 2 for identifying the classification mark. In this embodiment, the classification mark is engraved on both ends of the single crystal edge. The sorting mechanism 4 clamps the single crystal edge to be sorted and places it on the mark recognition station 2, so that the two ends of the single crystal edge are arranged opposite the second visual inspection device 14. The second visual inspection device 14 is specifically a 2D camera. After photographing and identifying the classification mark, the sorting mechanism 4 moves the single crystal edge to the sorted station 3 corresponding to the classification mark. To prevent the single crystal edge from coming into contact with metal during the sorting process, a nylon sorting table 15 is fixed to the mark recognition station 2. The two ends of the sorting table 15 are provided with second visual inspection devices 14 arranged opposite each other. To improve sorting efficiency, multiple sorting tables 15 can be installed on the mark recognition station 2.
[0035] Specifically, a bin 16 is placed at the sorted station 3. Bins 16 are designated corresponding to the classification identifiers and are used to store sorted single crystal offcuts. To facilitate the placement of different types of single crystal offcuts, each sorted station 3 has a bin 16 with a number corresponding to the classification identifier. When a bin 16 is full, a transport device transports the full bin of sorted single crystal offcuts to the next process step, and then places an empty bin 16 with the same number at the corresponding sorted station 3.
[0036] Sorting mechanism 4 is equipped with a counting function to count the number of single crystal offcuts placed in bin 16. This counting function is implemented through a computer software control algorithm, which is conventional technology and will not be described in detail here. When sorting mechanism 4 places single crystal offcuts into bin 16 at sorting station 3, it uses the counting function to count the number of single crystal offcuts placed in bin 16. When the number of single crystal offcuts reaches a set value, the bin is considered full, and transport mechanism 5 can then transport the full bin of sorted single crystal offcuts away.
[0037] A method for automatically sorting single crystal edge skins, using the above-mentioned single crystal edge skin automatic sorting device, comprises the following steps:
[0038] After the single crystals are cut and cut, they are transported on a line. During transportation, the detection device detects the electrical properties of the single crystals, and the coding machine marks the classification mark on the edge of the single crystal. The specific form of the classification mark is not limited and can be a number or a letter. In this embodiment, the single crystals are sorted according to their resistivity, and the resistivity is divided into several levels. Each level is represented by a number, which is the classification mark, such as:
[0039] 1: Resistivity < 0.3
[0040] 2: 0.3≤Resistivity<0.6
[0041] 3: 0.6≤Resistivity<0.9
[0042] 4: 0.9≤Resistivity<1.3
[0043] 5:1.3≤Resistivity<2.0
[0044] …
[0045] After the detection device detects the resistivity, the coding machine marks the classification mark corresponding to the resistivity at both ends of the single crystal's edge. The crystal is then squared, with the marking positions at both ends of the single crystal's edge. Therefore, after squared, the classification mark is located at both ends of the single crystal's edge to be sorted. The single crystal edge is placed in a bin for centralized storage.
[0046] The transport mechanism 5, loaded with a full box of single crystal edge skins to be sorted, enters from the entrance 8 of the transport channel 6 near the station 1 to be sorted, and places the full box of single crystal edge skins to be sorted on the station 1 to be sorted along the transport channel 6. When the proximity switch 13 detects the presence of a material box, the ground rail 7 drives the sorting mechanism 4 to move to the station 1 to be sorted. The first visual inspection device 11 moves to the top of the station 1 to be sorted to capture the placement position and angle of the single crystal edge skins. The sorting mechanism 4 clamps the single crystal edge skins and moves the single crystal edge skins to the marking identification station 2. When the first visual inspection device 11 captures an image of an empty material box, it interacts with the transport mechanism 5, and the transport mechanism 5 transports the empty box away from the exit 9 of the transport channel 6, and then enters from the entrance 8 of the transport channel 6 to place the full box of single crystal edge skins to be sorted on the station 1 to be sorted.
[0047] The second visual inspection device 14 identifies the classification mark on the end of the single crystal edge placed on the sorting table 15. The sorting mechanism 4 moves the single crystal edge to the bin 16 on the sorted station 3 corresponding to the classification mark. The bin 16 can be marked with a code corresponding to the classification mark. The counting function on the sorting mechanism 4 counts the single crystal edge placed in the bin 16. When the number in the bin 16 reaches the set value, the bin is full. The transport mechanism 5 transports the full bin of sorted single crystal edge from the exit 9 of the transport channel 6, and then transports the empty bin 16 with the same code from the entrance 8 of the transport channel 6 to the corresponding sorted station 3.
[0048] The advantages and positive effects of the utility model are:
[0049] 1. It replaces manual labor to realize the automatic sorting and transportation of single crystal edge skins, ensuring the accuracy of sorting, improving work efficiency, reducing labor costs, and reducing safety hazards.
[0050] 2. By setting up the first visual detection device, the accuracy of the sorting mechanism in clamping the single crystal edge skin is improved.
[0051] 3. By setting up a second visual detection device, the accuracy of classification identification is guaranteed.
[0052] The above embodiments of the present invention are described in detail. However, the above contents are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.
Claims
1. A single crystal edge skin automatic sorting device, characterized in that: include: The sorting station is used to place the single crystal edges to be sorted; A marking and identification station is used to identify the classification mark on the edge of the single crystal; A sorted station, corresponding to the classification identification setting, is used to classify and place the sorted single crystal edges; The sorting mechanism is used to move the single crystal edge skin between the to-be-sorted station, the mark identification station and the sorted station.
2. The automatic sorting device for single crystal edge skin according to claim 1, characterized in that: It also includes a transportation mechanism for transporting the single crystal edge skins to be sorted to the to-be-sorted station or transporting the single crystal edge skins that have been sorted away from the sorted station.
3. The automatic sorting device for single crystal edge skin according to claim 2, characterized in that: The to-be-sorted station, the mark identification station and the sorted station are arranged side by side, and a transport channel is provided on both sides of the sorting station, the mark identification station and the sorted station, and the transport mechanism performs transport on the transport channel.
4. The automatic sorting device for single crystal edge skin according to claim 3, characterized in that: A buffer area is provided at the end of the transport channel.
5. The automatic single crystal edge and skin sorting device according to any one of claims 1 to 4, characterized in that: The station to be sorted is provided with a first visual detection device for detecting the placement position and angle of the single crystal edge skin.
6. The automatic sorting device for single crystal edge skin according to claim 5, characterized in that: The first visual inspection device is provided with a driving device, and the driving device can drive the first visual inspection device to move horizontally along the station to be sorted.
7. The automatic single crystal edge sorting device according to claim 5, characterized in that: The station to be sorted is provided with a proximity switch for detecting whether the single crystal edge skin is placed on the station to be sorted.
8. The automatic single crystal edge and skin sorting device according to any one of claims 1-4 and 6-7, characterized in that: A second visual detection device is provided at both ends of the mark recognition station for identifying the classification mark.
9. The automatic single crystal edge sorting device according to claim 8, characterized in that: A material box is provided on the sorted workstation, and the material box is arranged corresponding to the classification mark and is used for placing the sorted single crystal edges.