Appearance inspection mechanism for plastic package structure of solar photovoltaic module

Abstract

The utility model provides a solar photovoltaic module plastic package structure appearance inspection mechanism, which comprises a conveying frame, a lens assembly, a driving assembly and a guide assembly, the conveying frame is horizontally arranged, the guide assembly is fixedly arranged between the conveying frame and cutting equipment, the lens assembly is arranged based on the vertical direction of the conveying frame, and the driving assembly is arranged on the conveying frame. The lens assembly is arranged on the driving assembly and can move in a reciprocating mode in the direction close to or away from the conveying frame. According to the utility model, the conveying process of the plastic package structure of the solar photovoltaic module is completed through the conveying frame, and the appearance inspection process of the plastic package structure of the solar photovoltaic module is completed through the lens assembly, so that the inspection efficiency can be greatly improved, and the specific conditions of bad defects are marked; in the process, the orientation of the plastic package structure of the solar photovoltaic module is adjusted to be uniform through the guide assembly, so that the appearance inspection process can be rapidly carried out.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor processing technology, and in particular to an appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module. Background Technology

[0002] A solar photovoltaic (PV) module is a chip module within a photovoltaic (PV) module. The PV module's encapsulation structure consists of a lead frame and a molding compound. It is obtained by cutting the molding compound after encapsulating the carrier islands and bonding areas on the positive and negative electrode frames. However, due to vibrations or errors during the cutting process, the resulting encapsulated structure may still contain defects such as missing corners and surface damage. Visual inspection is required to identify these defects in each encapsulated structure, but currently, inspection is mainly done manually, which is inefficient and cannot accurately record the specific details of the defects. Automated inspection is also difficult due to the orientation of the encapsulated structure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a solar photovoltaic module plastic encapsulation structure appearance inspection mechanism to complete the automatic appearance inspection process of the solar photovoltaic module plastic encapsulation structure, while ensuring the orientation of the solar photovoltaic module plastic encapsulation structure during the inspection process.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a solar photovoltaic module plastic-encapsulated structure appearance inspection mechanism, characterized in that it includes a conveyor frame, a lens assembly, a drive assembly and a guide assembly. The conveyor frame is horizontally arranged, the guide assembly is fixedly arranged between the conveyor frame and the cutting device, the lens assembly is arranged based on the vertical direction of the conveyor frame, and the lens assembly is arranged on the drive assembly and can reciprocate in the direction close to or away from the conveyor frame.

[0005] Furthermore, the guide assembly includes a first end that receives the output end of the cutting equipment and a second end that faces the input end of the conveyor frame. A guide plate is provided between the first end and the second end. The width of the second end is greater than the width of the solar photovoltaic module encapsulation structure but less than its length, while the width of the first end is greater than the length of the solar photovoltaic module encapsulation structure.

[0006] Furthermore, the guide plate is fixedly mounted on the pushing mechanism near the second end.

[0007] Furthermore, the lens assembly includes an upper lens assembly and a lower lens assembly, both of which are fixedly mounted on the drive assembly.

[0008] Furthermore, the drive assembly includes a support and a first servo motor. The support is a hollow structure, with a rotatable lead screw disposed within it. A movable block that can reciprocate along the length of the lead screw is disposed on the lead screw. The upper lens assembly and the lower lens assembly are disposed opposite to each other on the upper and lower sides of the movable block. The lead screw is driven to rotate by a servo motor fixed to one side of the support.

[0009] Furthermore, the conveyor frame includes two parallel guide rails and a limiting block located between the guide rails. The limiting block has a notch adapted to the shape of the plastic encapsulation structure of the solar photovoltaic module, and the limiting block can move along the length direction of the guide rails.

[0010] Furthermore, a driven roller is provided on the side of the limiting block facing the guide rail. The driven roller is connected to the driving roller by a synchronous belt and rotates synchronously. The driving roller is driven by a second servo motor.

[0011] Furthermore, the limiting block is made of transparent material, and a pressure switch is provided in the notch. The second servo motor is configured to receive the pressure switch electrical signal and drive the active roller to rotate.

[0012] Furthermore, it also includes an analysis unit and a storage unit. The analysis unit receives image information from the upper lens assembly and the lower lens assembly and completes the analysis and recording of defects in the plastic encapsulation structure of the solar photovoltaic module. The analysis and recording information is then stored in the storage unit.

[0013] Compared with the prior art, the beneficial effects of this utility model include:

[0014] 1) The solar photovoltaic module plastic encapsulation structure is transported by a conveyor frame, and the appearance inspection of the solar photovoltaic module plastic encapsulation structure is completed by a lens assembly. This can greatly improve the inspection efficiency and mark the specific details of defects. During the process, the solar photovoltaic module plastic encapsulation structure is adjusted to a uniform orientation by a guide assembly to ensure the rapid progress of the appearance inspection process.

[0015] 2) By adjusting the width of the guide components facing both ends of the cutting equipment and the conveyor frame, the movement direction of the solar photovoltaic module encapsulation structure can be simply and directly restricted. Furthermore, a pushing mechanism is provided at the end of the guide plate near the conveyor frame, which can effectively prevent the problem of feeding difficulties caused by the mutual restriction between the solar photovoltaic module encapsulation structures.

[0016] 3) The limiting block set in the conveyor frame has a notch that adapts to the shape of the solar photovoltaic module's plastic packaging structure, which can further limit the position of the solar photovoltaic module's plastic packaging structure in the limiting block, and help ensure the efficiency and accuracy of the inspection. Attached Figure Description

[0017] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0018] Figure 1 The schematic diagram shows a top view of the appearance inspection mechanism for the plastic-encapsulated structure of a solar photovoltaic module;

[0019] Figure 2 Schematic representation Figure 1 The three-dimensional structure of region A in the middle.

[0020] The numbers in the diagram are: 1-Conveyor frame, 2-Limit block, 21-Notch, 22-Driven roller, 23-Driven roller, 24-Second servo motor, 25-Pressure switch, 3-Support, 4-Upper lens assembly, 5-Lower lens assembly, 6-First servo motor, 71-First end, 72-Second end, 73-Guide plate, 74-Pushing mechanism. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] like Figure 1As shown, a solar photovoltaic module encapsulation structure appearance inspection mechanism includes a conveyor frame 1, a lens assembly, a drive assembly, and a guide assembly. The conveyor frame 1 is arranged horizontally and is mainly used to transport the solar photovoltaic module encapsulation structure to the position of the lens assembly to complete the appearance inspection process. The guide assembly is fixedly set between the conveyor frame 1 and the cutting equipment. During the cutting process of the solar photovoltaic module encapsulation structure, it is cut from the lead frame by laser cutting. After the individual solar photovoltaic module encapsulation structure falls directly, the orientation of the individual solar photovoltaic module encapsulation structure is not fixed, and there may be stacking between the solar photovoltaic module encapsulation structures. The aforementioned situation is obviously not allowed when using the lens assembly for appearance inspection. Manual intervention is often required to complete the subsequent appearance inspection process. By using the guide assembly, the orientation of the individual solar photovoltaic module encapsulation structure can be adjusted and the stacking between the solar photovoltaic module encapsulation structures can be alleviated to a certain extent. The aforementioned lens assembly is arranged in the vertical direction of the conveyor frame 1, that is, it is arranged above or below the conveyor frame 1 on at least one side, and the lens assembly is configured on the drive assembly and can reciprocate in the direction of approaching or moving away from the conveyor frame 1, so as to adapt to the appearance inspection process or the maintenance process of the conveyor frame 1 in different areas of the width direction of the solar photovoltaic module encapsulation structure.

[0023] The following combination Figure 1 The right side of the diagram provides a detailed description of the guiding component. The guiding component includes a first end 71 and a second end 72. The first end 71 faces the output end of the cutting equipment and is used to receive individual solar photovoltaic module encapsulation structures output from the cutting equipment. The second end 72 faces the input end of the conveyor frame 1 and is used to guide the individual solar photovoltaic module encapsulation structures sequentially onto the conveyor frame 1 for subsequent visual inspection. It is worth noting that a guide plate 73 is provided between the first end 71 and the second end 72. The guide plate 73 can be used directly as the boundary of the guiding component. The width of the second end 72 is greater than the width of the solar photovoltaic module encapsulation structure but less than its length, allowing the solar photovoltaic module encapsulation structure to be output along its length when it is output onto the conveyor frame 1 via the second end 72 of the guiding component. The width of the first end 71 is greater than the length of the solar photovoltaic module encapsulation structure, facilitating the flow of the solar photovoltaic module encapsulation structure from the output end of the cutting equipment into the guiding component.

[0024] Because the solar photovoltaic module molding structure is a near-rectangular structure with irregularly shaped connecting slots for positioning, when a large number of solar photovoltaic module molding structures are concentrated in the guide assembly, adjacent solar photovoltaic module molding structures can be embedded in the irregularly shaped connecting slots. If the embedded solar photovoltaic module molding structure happens to be located at the second end 72 of the guide assembly, it can block subsequent solar photovoltaic module molding structures within the second end 72 of the guide assembly, thus preventing them from being output to the conveyor frame 1. To prevent this from happening, the aforementioned guide plate 73 is fixedly mounted on the pushing mechanism 74 near the second end 72. That is, the outer side of the guide plate 73 is fixed to the pushing mechanism 74. By pushing the guide plate 73 inward through the pushing mechanism 74, an external force can be applied to the two or more embedded solar photovoltaic module molding structures. Because the depth of the irregularly shaped connecting slots is small, this external force can separate at least two embedded solar photovoltaic module molding structures located in the guide assembly, and then output them to the conveyor frame 1 via the second end 72 of the guide assembly.

[0025] The following combination Figure 2 The lens assembly is described in detail below. The lens assembly includes an upper lens assembly 4 and a lower lens assembly 5. Both the upper lens assembly 4 and the lower lens assembly 5 are fixedly mounted on the drive assembly and are positioned opposite each other. This allows for simultaneous inspection of the appearance of the upper and lower sides of the solar photovoltaic module's plastic encapsulation structure. The drive assembly is only used to change the position of the upper lens assembly 4 and the lower lens assembly 5 relative to the conveyor frame 1.

[0026] The aforementioned drive assembly includes a support 3 and a first servo motor 6. The support 3 is a hollow structure, and a rotatable lead screw is provided in the support 3. A movable block that can reciprocate along the length of the lead screw is provided on the lead screw. The aforementioned upper lens assembly 4 and lower lens assembly 5 are respectively arranged on the upper and lower sides of the movable block. The lead screw is driven to rotate by the first servo motor 6 fixed to one side of the support 3.

[0027] The structure of the conveyor frame 1 is described in detail below. The conveyor frame 1 includes two parallel guide rails and a limiting block 2 located between the guide rails. The limiting block 2 is provided with a notch 21 that adapts to the shape of the plastic encapsulation structure of the solar photovoltaic module, and the limiting block 2 can move along the length direction of the guide rails.

[0028] Regarding the movement of the aforementioned limiting block 2 and conveyor frame 1, a driven roller 22 is provided on the side of the limiting block 2 facing the guide rail, and one side of the driven roller 22 is in contact with the guide rail. The driven roller 22 is connected to the driving roller 23 by a synchronous belt. The driving roller 23 drives the synchronous belt connected to it to move by rotating, thereby driving the driven roller 22 to move on the guide rail, thus driving the limiting block 2 to move along the length of the guide rail to complete the continuous appearance inspection process of the solar photovoltaic module molding structure. To facilitate the appearance inspection process, the limiting block 2 can pause the appearance inspection process when it moves to the corresponding position of the lens assembly, and then continue the transportation process by the conveyor frame 1. During this process, a limit switch can be provided at the support 3 position. When the limiting block 2 moves to this position, the limit switch is triggered, and after a fixed time, it can continue to move along the guide rail direction of the conveyor frame 1.

[0029] It is worth noting that, to facilitate simultaneous visual inspection of the upper lens assembly 4 and the lower lens assembly 5, the limiting block 2 is made of transparent material, and a pressure switch 25 is provided in the notch 21 to monitor whether the solar photovoltaic module molding structure falls into the notch 21 of the limiting block 2. If the solar photovoltaic module molding structure does not fall into the limiting block 2, the limiting block 2 pauses at the output end position of the guide assembly. The second servo motor 24 is configured to receive the electrical signal from the pressure switch 25 and drive the active roller 23 to rotate. The aforementioned limiting switch can also regulate the rotation process of the second servo motor 24. In another embodiment, the distance between adjacent limiting blocks 2 is set to be the same as the distance between the lens assembly and the guide assembly, thus eliminating the need for the limiting switch. The rotation process of the second servo motor 24 is regulated solely by the pressure switch 25 provided in the notch 21 of the limiting block 2, while also meeting the requirement that the limiting block 2 pauses at the position of the lens assembly.

[0030] It also includes an analysis unit and a storage unit. The analysis unit receives image information from the upper lens assembly 4 and the lower lens assembly 5 and completes the analysis and recording of defects in the plastic encapsulation structure of the solar photovoltaic module. The analysis and recording process can rely on the gap 21 between the solar photovoltaic module plastic encapsulation structure to determine the corner missing condition of the solar photovoltaic module plastic encapsulation structure. Surface damage is visually identified based on the area of ​​surface damage. The identified defects are then recorded and the recorded information is stored in the storage unit.

[0031] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A visual inspection mechanism for the plastic-encapsulated structure of a solar photovoltaic module, characterized in that, The device includes a conveyor (1), a lens assembly, a drive assembly, and a guide assembly. The conveyor (1) is horizontally arranged, and the guide assembly is fixedly arranged between the conveyor (1) and the cutting device. The lens assembly is arranged based on the vertical direction of the conveyor (1). The lens assembly is arranged on the drive assembly and can reciprocate in a direction close to or away from the conveyor (1).

2. The appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module according to claim 1, characterized in that, The guide assembly includes a first end (71) receiving the output end of the cutting equipment and a second end (72) facing the input end of the conveyor frame (1). A guide plate (73) is provided between the first end (71) and the second end (72). The width of the second end (72) is greater than the width of the solar photovoltaic module encapsulation structure and less than its length, while the width of the first end (71) is greater than the length of the solar photovoltaic module encapsulation structure.

3. The appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module according to claim 2, characterized in that, The guide plate (73) is fixedly mounted on the push mechanism (74) near the second end (72).

4. The appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module according to claim 1, characterized in that, The lens assembly includes an upper lens assembly (4) and a lower lens assembly (5), both of which are fixedly mounted on the drive assembly.

5. The appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module according to claim 4, characterized in that, The drive assembly includes a support (3) and a first servo motor (6). The support (3) is a hollow structure. A rotatable lead screw is provided in the support (3), and a movable block that can reciprocate along the length of the lead screw is provided on the lead screw. The upper lens assembly (4) and the lower lens assembly (5) are arranged opposite to each other on the upper and lower sides of the movable block. The lead screw is driven to rotate by a servo motor fixed to one side of the support (3).

6. The appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module according to claim 5, characterized in that, The conveyor frame (1) includes two parallel guide rails and a limiting block (2) located between the guide rails. A notch (21) adapted to the shape of the plastic encapsulation structure of the solar photovoltaic module is provided in the limiting block (2). The limiting block (2) can move along the length direction of the guide rails.

7. The appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module according to claim 6, characterized in that, A driven roller (22) is provided on the side of the limiting block (2) facing the guide rail. The driven roller (22) is connected to the driving roller (23) by a synchronous belt and rotates synchronously. The driving roller (23) is driven by a second servo motor (24).

8. The appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module according to claim 7, characterized in that, The limiting block (2) is made of transparent material, and a pressure switch (25) is provided in the notch (21). The second servo motor (24) is configured to receive the electrical signal of the pressure switch (25) and drive the active roller (23) to rotate.

9. The appearance inspection mechanism for the plastic encapsulation structure of a solar photovoltaic module according to claim 5, characterized in that, It also includes an analysis unit and a storage unit. The analysis unit receives image information from the upper lens assembly (4) and the lower lens assembly (5) and completes the analysis and recording of defects in the plastic encapsulation structure of the solar photovoltaic module. The analysis and recording information is then stored in the storage unit.

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