Silicon rod crack detection device

Abstract

The utility model provides a silicon rod crack detection device which is arranged on a conveying line body and comprises detection supporting tables, a clamping jaw assembly and a detection assembly, the detection supporting tables are oppositely arranged on the two sides of the conveying line body and can be close to or away from the conveying line body, and the detection supporting tables are arranged above the conveying line body; the clamping jaw assembly is arranged above the conveying line body and used for conveying silicon rods between the conveying line body and the detection supporting table. The detection assembly is arranged above the detection supporting table and used for detecting cracks of the silicon rod. The silicon rod crack detection device has the beneficial effects that the silicon rod crack can be automatically detected, the cracks in the silicon rod can be timely detected, the detection accuracy is improved, the waste of working hours is reduced, the production cost is reduced, the production efficiency is improved, the loss of the silicon rod is reduced, and the product quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaics, and in particular relates to a silicon rod crack detection device. Background Art

[0002] During the drawing process of monocrystalline silicon rods, internal crack defects of different forms will be generated, which need to be removed through multiple back-cutting operations. In the prior art, manual visual inspection is usually adopted. For internal cracks, they cannot be identified in time, resulting in the silicon rods flowing into the squaring process as normal products. After the silicon rods are squared, the internal cracks are identified by manual visual inspection and then removed by back-cutting, which wastes working hours, reduces production efficiency, and increases production costs. For fine cracks, the naked eye cannot identify them, affecting product quality. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a silicon rod crack detection device, which effectively solves the problems of untimely manual detection of silicon rod cracks and inability to identify fine cracks, and overcomes the deficiencies of the prior art.

[0004] The technical solution adopted by the utility model is: a silicon rod crack detection device is arranged on a conveying line body and includes:

[0005] Detection support platforms are oppositely arranged on both sides of the conveying line body, and can be close to or far away from the conveying line body. The detection support platforms are arranged above the conveying line body;

[0006] Claw assemblies are arranged above the conveying line body and are used for transferring silicon rods between the conveying line body and the detection support platforms;

[0007] Detection assemblies are arranged above the detection support platforms and are used for detecting cracks of the silicon rods.

[0008] Further, the detection support platforms include

[0009] Support platforms are oppositely arranged on both sides of the conveying line body;

[0010] Moving platforms are arranged above the support platforms and are slidably connected to the support platforms. The moving platforms can be close to or far away from the conveying line body.

[0011] Further, support rollers are arranged at relative positions of the moving platforms. The support rollers are arranged along the axial direction of the silicon rods and can drive the silicon rods to rotate.

[0012] Further, the detection assemblies include a first infrared camera and an infrared light source, which are oppositely arranged on both sides of the conveying line body.

[0013] Further, the first infrared camera and the infrared light source are respectively arranged on the relatively arranged first positioning component and second positioning component, and the first positioning component and the second positioning component are respectively arranged on both sides of the conveyor line body.

[0014] Further, a first mounting plate is provided on the first positioning component for arranging the first infrared camera, and a visible light camera is arranged below the first infrared camera, and the visible light camera is arranged on the first mounting plate.

[0015] Further, a visible light source is provided on the first mounting plate.

[0016] Further, a second mounting plate is provided on the second positioning component for arranging the infrared light source, and a second infrared camera is provided on the second mounting plate. The second infrared camera is arranged at one end of the silicon rod and can take an oblique photograph of the silicon rod.

[0017] Further, both the first positioning component and the second positioning component include a first guiding structure. A second guiding structure is provided on the first guiding structure, and a third guiding structure is provided on the second guiding structure. The first guiding structure is vertically arranged and can drive the second guiding structure to move up and down. The second guiding structure is horizontally arranged and can drive the third guiding structure to move horizontally along the conveyor line body. The first mounting plate or the second mounting plate is provided on the third guiding structure, and can drive the first mounting plate and the second mounting plate to approach or move away from the conveyor line body.

[0018] Further, the jaw assembly includes a driving device and jaws. The jaws are arranged on the driving device, and the driving device can drive the jaws to move up and down.

[0019] The advantages and positive effects of the present utility model are as follows: By adopting the above technical solution, the automatic detection of cracks in the silicon rod is realized, the cracks inside the silicon rod can be detected in time, the detection accuracy is improved, the waste of working hours is reduced, the production cost is lowered, the production efficiency is improved, the loss of the silicon rod is reduced, and the product quality is guaranteed. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure of a silicon rod crack detection device according to an embodiment of the present utility model.

[0021] Figure 2 is a top view of a moving platform and a detection component of a silicon rod crack detection device according to an embodiment of the present utility model.

[0022] Figure 3 is a schematic diagram of a first guiding structure and a second guiding structure of a silicon rod crack detection device according to an embodiment of the present utility model.

[0023] In the figure:

[0024] 10. Conveyor line body, 11. Tray, 20. Detection support table

[0025] 21. Support platform, 22. Moving platform, 23. First linear module

[0026] 24. Support roller, 25. First motor, 26. Belt

[0027] 30. Claw assembly, 31. Driving device, 32. Claw

[0028] 33. Isolation layer, 40. Detection component, 41. First infrared camera

[0029] 42. Infrared light source, 43. First mounting plate, 44. Visible light camera

[0030] 45. Visible light source, 46. Second mounting plate, 47. Second infrared camera

[0031] 48. Connecting rod, 50. Support frame body, 60. First guiding structure

[0032] 61. Lead screw, 62. Second motor, 70. Second guiding structure

[0033] 71. Cross beam, 72. Second linear module, 80. Third guiding structure

[0034] 81. Connecting bracket, 82. Third linear module, 90. Silicon rod Detailed implementation manner

[0035] The embodiment of the present utility model provides a silicon rod crack detection device. The following will describe the embodiment of the present utility model with reference to the accompanying drawings.

[0036] In the description of the embodiment of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model. In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "set", "connect" 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, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0037] As Figure 1As shown in the figure, an embodiment of the utility model provides a silicon rod crack detection device, which is arranged on the conveying line body 10 and can detect the cracks of the silicon rod 90 in time during the transfer process. The device includes a detection support platform 20, a jaw assembly 30 and a detection assembly 40. The detection support platforms 20 are oppositely arranged on both sides of the conveying line body 10 and can be close to or far away from the conveying line body 10. The detection support platforms 20 are arranged above the conveying line body 10. The jaw assembly 30 is arranged above the conveying line body 10 and is used for transferring the silicon rod 90 between the conveying line body 10 and the detection support platform 20. The detection assembly 40 is arranged above the detection support platform 20 and is used for detecting the cracks of the silicon rod 90. The silicon rod 90 is placed on the tray 11 along the transmission direction of the conveying line body 10. When the conveying line body 10 transports the silicon rod 90 to the lower part of the detection support platform 20, the jaw assembly 30 clamps the silicon rod 90 to the upper part of the detection support platform 20. The detection support platform 20 moves close to the conveying line body 10, and the jaw assembly 30 places the silicon rod 90 on the detection support platform 20. The detection assembly 40 detects the cracks of the silicon rod 90. After the detection is completed, the jaw assembly 30 clamps the silicon rod 90 and moves upward, the detection support platform 20 moves away from the conveying line body 10, and the jaw assembly 30 places the silicon rod 90 on the conveying line body 10. The conveying line body 10 transports the detected silicon rod 90 to the next process.

[0038] Specifically, the detection support platform 20 includes a support platform 21 and a moving platform 22. The support platforms 21 are oppositely arranged on both sides of the conveying line body 10. The moving platform 22 is arranged above the support platform 21 and is slidably connected with the support platform 21 for placing the silicon rod 90. The moving platform 22 can be close to or far away from the conveying line body 10. In this embodiment, support frames 50 are symmetrically and fixedly arranged on both sides of the conveying line body 10. The support platforms 21 are horizontally installed at the relative positions of the support frames 50. One end of the support platform 21 close to the support frame 50 is fixedly connected with the support frame 50. The support platform 21 is located above the conveying line body 10. A first linear module 23 is installed above each support platform 21. The first linear module 23 is arranged perpendicular to the conveying line body 10. A horizontal moving platform 22 is fixed on the slider of the first linear module 23. The first linear module 23 can drive the moving platform 22 to move horizontally, close to or far away from the conveying line body 10. The linear module is also called a linear module, which drives the load to move linearly through the slider. It is a prior art and will not be elaborated here.

[0039] Preferably, in order to stably place the silicon rod 90 on the moving platform 22, support rollers 24 are provided at relative positions of the moving platform 22. The support rollers 24 are arranged along the axial direction of the silicon rod 90 and can drive the silicon rod 90 to rotate. In this embodiment, the support rollers 24 are rotatably connected to the moving platform 22. A first motor 25 is provided at one end of the support roller 24. The first motor 25 is fixedly installed on the moving platform 22. The output end of the first motor 25 drives the support roller 24 to rotate through a belt 26. The jaw assembly 30 clamps the silicon rod 90 from the conveying line body 10 onto the support roller 24. The support roller 24 can drive the silicon rod 90 to rotate, facilitating the detection assembly 40 to perform a complete detection on the entire silicon rod 90. The material of the support roller 24 is silicone or tetrafluoro material.

[0040] Specifically, the detection assembly 40 includes a first infrared camera 41 and an infrared light source 42, which are oppositely arranged on both sides of the conveying line body 10. In this embodiment, the first infrared camera 41 and the infrared light source 42 are respectively installed on the support frames 50 on both sides of the conveying line body 10. During the detection process, the infrared light source 42 irradiates the entire length of the silicon rod 90, and the first infrared camera 41 takes pictures of the entire length of the silicon rod 90 to detect cracks. By driving the silicon rod 90 to rotate circumferentially through the support roller 24, the first infrared camera 41 can detect each position in the circumferential direction of the silicon rod 90. The infrared light passes through the silicon rod 90 and irradiates from one side of the silicon rod 90 to the other side. Since the light will refract in the crack defect area, the first infrared camera 41 takes pictures on the side where the light exits, and the cracks of the silicon rod can be detected through image processing.

[0041] Preferably, in order to enable the first infrared camera 41 and the infrared light source 42 to take pictures and irradiate the entire length of the silicon rod 90, the distances between the first infrared camera 41 and the infrared light source 42 and the silicon rod 90 need to be adjusted. Therefore, the first infrared camera 41 and the infrared light source 42 are respectively arranged on the relatively arranged first positioning assembly and second positioning assembly, and the first positioning assembly and the second positioning assembly can respectively adjust the positions of the first infrared camera 41 and the infrared light source 42. In this embodiment, the first positioning assembly and the second positioning assembly are oppositely installed on the support frames 50 on both sides of the conveying line body 10.

[0042] Preferably, to facilitate the installation of the first infrared camera 41, a first mounting plate 43 is provided on the first positioning assembly. A visible light camera 44 is provided below the first infrared camera 41, and the visible light camera 44 is disposed on the first mounting plate 43. In the image captured by the first infrared camera 41, there may be surface damage. To exclude surface damage and reduce unnecessary re-cutting of the silicon rod, the visible light camera 44 is provided to capture the surface damage of the silicon rod 90. By providing the visible light camera 44 to exclude damage, the crack of the silicon rod 90 can be detected more accurately. In this embodiment, the first infrared camera 41 is horizontally disposed, and the camera of the visible light camera 44 located at the lower part is inclined upward.

[0043] Preferably, to enable the visible light camera 44 to capture the surface damage of the silicon rod 90 more clearly, a visible light source 45 is provided on the first mounting plate 43. In this embodiment, the visible light source 45 is disposed on the top of the first infrared camera 41 and is inclined downward.

[0044] Preferably, as Figure 2 shown, to facilitate the installation of the infrared light source 42, a second mounting plate 46 is provided on the second positioning assembly. A second infrared camera 47 is provided on the second mounting plate 46, and the second infrared camera 47 is disposed at the end of the silicon rod 90 and can obliquely capture the end face of the silicon rod 90. When the first infrared camera 41 fails to identify the crack, the picture captured by the second infrared camera 47 can be referred to for comprehensive determination, which is more conducive to crack detection. In this embodiment, since the cracks of the silicon rod are mostly concentrated at the tail end of the silicon rod, a connecting rod 48 is fixed on the second mounting plate 46, and the second infrared camera 47 is fixed at the end of the connecting rod 48 away from the second mounting plate 46 and is located at the tail end of the silicon rod 90. The camera of the second infrared camera 47 rotates by a certain angle towards the silicon rod 90 so that the second infrared camera 47 can capture the tail end of the silicon rod 90.

[0045] Preferably, to facilitate the positioning of the first positioning assembly and the second positioning assembly for the detection assembly 40, both the first positioning assembly and the second positioning assembly include a first guiding structure 60. A second guiding structure 70 is provided on the first guiding structure 60, and a third guiding structure 80 is provided on the second guiding structure 70. The first guiding structure 60 is vertically disposed and can drive the second guiding structure 70 to move up and down. The second guiding structure 70 is horizontally disposed and can drive the third guiding structure 80 to move horizontally along the conveying line body 10. The first mounting plate 43 or the second mounting plate 46 is provided on the third guiding structure 80, which can drive the first mounting plate 43 and the second mounting plate 46 to approach or move away from the conveying line body 10.

[0046] In this embodiment, as Figure 1 and 3As shown in the figure, the first guiding structure 60 is a lead screw transmission structure. The lead screw 61 is vertically installed on the support frame 50, and the second motor 62 drives the lead screw 61 to rotate, causing the moving nut on the lead screw 61 to move up and down. The second guiding structure 70 includes a cross beam 71. A second linear module 72 is installed on the cross beam 71. The two ends of the cross beam 71 are fixed to the moving nut on the lead screw 61, and the moving nut can drive the second guiding structure 70 to move up and down. The third guiding structure 80 includes a connecting bracket 81. A third linear module 82 is installed on one side of the connecting bracket 81. The top of the connecting bracket 81 is fixedly connected to the slider of the second linear module 72. The second linear module 72 can drive the third guiding structure 80 to move horizontally. The slider of the third linear module 82 is installed with the first mounting plate 43 or the second mounting plate 46, which can drive the first mounting plate 43 and the second mounting plate 46 to approach or move away from the conveying line body 10. The linear module is also called a linear actuator, which drives the load to move linearly through the slider. It is an existing technology and will not be elaborated here.

[0047] Specifically, the jaw assembly 30 includes a driving device 31 and jaws 32. The jaws 32 are arranged on the driving device 31, and the driving device 31 can drive the jaws 32 to move up and down. In this embodiment, the driving device 31 is specifically a cylinder. The cylinder is installed on the top support frame 50, and the movable end of the cylinder is installed with an electric jaw 32, which can drive the electric jaw 32 to move up and down. The electric jaw is an existing technology and will not be elaborated here. In order to prevent damage to the silicon rod 90 when the jaws 32 grip the silicon rod 90, an isolation layer 33 is fixed on the gripping side of the jaws 32. The material of the isolation layer 33 is not limited and can be silica gel or tetrafluoro material.

[0048] The advantages and positive effects of the present utility model are:

[0049] 1. By setting the first infrared camera, the automatic identification and detection of cracks are realized, and the internal cracks of the silicon rod can be detected in time. The first infrared camera can also identify small cracks.

[0050] 2. By setting the visible light camera, the surface breakage is excluded, making the detection more accurate, reducing unnecessary re-cutting, and reducing the loss of the silicon rod.

[0051] 3. By setting the second infrared camera, when the image captured by the first infrared camera cannot be recognized, the image of the second infrared camera can be referred to, further improving the accuracy of the detection.

[0052] 4. By setting the detection support table and support rollers, the silicon rod can be rotated to make the detection more comprehensive.

[0053] 5. By setting the first positioning component and the second positioning component, precise positioning of the detection component is achieved.

[0054] 6. It reduces the waste of working hours, lowers the production cost, improves the production efficiency and ensures the product quality.

[0055] The above has described the embodiments of the present utility model in detail, but the content described is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. Any equivalent changes and improvements made according to the scope of application of the present utility model shall still fall within the patent coverage scope of the present utility model.

Claims

1. A silicon rod crack detection device, arranged on a conveyor line, characterized in that: include: A detection support platform is relatively arranged on both sides of the conveyor line body and can be close to or away from the conveyor line body. The detection support platform is arranged above the conveyor line body; A clamping claw assembly is arranged above the conveying line body and is used to transfer silicon rods between the conveying line body and the detection support platform; The detection component is arranged above the detection support platform and is used to detect cracks of the silicon rod.

2. A silicon rod crack detection device according to claim 1, characterized in that: The detection support platform comprises: Support platforms are arranged relatively on two sides of the conveyor line body; The mobile platform is arranged above the supporting platform and is slidably connected to the supporting platform. The mobile platform can be close to or away from the conveying line body.

3. A silicon rod crack detection device according to claim 2, characterized in that: A supporting roller is provided at a position opposite to the moving platform. The supporting roller is arranged along the axial direction of the silicon rod and can drive the silicon rod to rotate.

4. A silicon rod crack detection device according to any one of claims 1 to 3, characterized in that: The detection component includes a first infrared camera and an infrared light source, which are arranged on two sides of the conveying line body opposite to each other.

5. A silicon rod crack detection device according to claim 4, characterized in that: The first infrared camera and the infrared light source are respectively arranged on a first positioning component and a second positioning component which are arranged opposite to each other, and the first positioning component and the second positioning component are respectively arranged on both sides of the conveying line body.

6. A silicon rod crack detection device according to claim 5, characterized in that: A first mounting plate is provided on the first positioning assembly for setting the first infrared camera. A visible light camera is provided below the first infrared camera, and the visible light camera is set on the first mounting plate.

7. A silicon rod crack detection device according to claim 6, characterized in that: The first mounting plate is provided with a visible light source.

8. A silicon rod crack detection device according to claim 7, characterized in that: A second mounting plate is provided on the second positioning assembly for setting the infrared light source. A second infrared camera is provided on the second mounting plate. The second infrared camera is arranged at the end of the silicon rod and can take oblique photos of the silicon rod.

9. A silicon rod crack detection device according to claim 8, characterized in that: The first positioning assembly and the second positioning assembly both include a first guide structure, a second guide structure is provided on the first guide structure, a third guide structure is provided on the second guide structure, the first guide structure is vertically arranged to drive the second guide structure to move up and down, the second guide structure is horizontally arranged to drive the third guide structure to move horizontally along the conveyor line body, the third guide structure is provided with the first mounting plate or the second mounting plate, which can drive the first mounting plate and the second mounting plate to move closer to or away from the conveyor line body.

10. A silicon rod crack detection device according to any one of claims 1-3 and 5-9, characterized in that: The clamping jaw assembly comprises a driving device and a clamping jaw, wherein the clamping jaw is arranged on the driving device, and the driving device can drive the clamping jaw to move up and down.

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