A anti-blocking piece basket loading system

Abstract

The present invention discloses a wafer-loading system for a wafer basket with an anti-blocking structure, which relates to the technical field of crystalline silicon solar cells and comprises a base; a wafer guide fixedly mounted on the base, a conveyor belt mounted on the wafer guide, and the conveyor belt used to feed silicon wafers into the wafer basket; a pre-test wafer mechanism mounted below the wafer guide, the pre-test wafer mechanism comprising a mounting assembly, a drive assembly, and a silicon wafer model, the drive assembly being capable of pushing and pulling the silicon wafer model into the wafer basket, thereby performing a pre-test wafer loading before wafer loading. The present invention can perform a preliminary visual inspection of the wafer basket before loading through a visual inspection mechanism and a pre-test wafer mechanism, and promptly detect a wafer basket with deformed or damaged teeth. At the same time, the present invention can simulate silicon wafer loading using a silicon wafer model before loading, thereby ensuring that the silicon wafer can be smoothly loaded into the wafer basket, providing dual protection for silicon wafer loading, effectively preventing wafer blockage and crushing during the loading process, ensuring normal production, and avoiding unnecessary economic losses.

Description

Technical Field

[0001] The invention relates to the technical field of crystalline silicon solar cells, in particular to an anti-blocking sheet basket loading system. Background Art

[0002] The production process of solar cells is divided into silicon wafer inspection - surface texturing and pickling - diffusion bonding - dephosphorization of silicon glass - plasma etching and pickling - anti-reflection coating - screen printing - rapid sintering, etc. After inspection, the raw silicon wafers need to be placed in a basket for cleaning and texturing.

[0003] With the increasing improvement of automated production, the trend in the processing and production of crystalline silicon solar cells is to achieve production automation and assembly automation to improve production efficiency. The processing and production of crystalline silicon solar cells has also been upgraded from manual loading to automatic loading with a flower basket.

[0004] In the prior art, inspected silicon wafers are transported by a wafer guide and inserted into a basket. The basket then rises, allowing the wafers to be inserted sequentially between the teeth of the basket. However, because the basket is typically made of PVDF plastic, the teeth can deform during use due to operational errors. Deformed teeth can cause wafer blockage or crushing during loading, disrupting normal production and causing unnecessary economic losses.

[0005] Therefore, in view of the above technical problems, it is necessary to provide an anti-blocking sheet flower basket loading system. Summary of the Invention

[0006] The object of the present invention is to provide a wafer-loading system with an anti-blocking wafer basket, which can solve the technical problems of wafer blocking and silicon wafer crushing during wafer loading.

[0007] To achieve the above-mentioned purpose, an embodiment of the present invention provides an anti-blocking sheet basket loading system, comprising:

[0008] base;

[0009] A wafer guide machine is fixedly mounted on the base, and a conveyor belt is mounted on the wafer guide machine, and the conveyor belt is used to feed the silicon wafers into the flower basket;

[0010] A pre-test wafer mechanism is installed below the wafer guide. The pre-test wafer mechanism includes a mounting assembly, a drive assembly, and a silicon wafer model. The drive assembly can push and pull the silicon wafer model into the basket, thereby performing pre-test wafers before loading.

[0011] The visual inspection mechanism is fixedly installed below the silicon wafer model and is used to perform visual inspection on the flower basket before pre-testing the wafer;

[0012] The flower basket lifting mechanism comprises a lifting guide rail and an electric lifting frame. The electric lifting frame is driven by a motor to slide and lift on the lifting guide rail. The flower basket is installed inside the electric lifting frame and can automatically lift and lower to connect the flowers.

[0013] In one or more embodiments of the present invention, an Internet of Things control module is further included, and the visual inspection mechanism and the pre-test mechanism are both connected to the Internet of Things control module by wire or wirelessly.

[0014] In one or more embodiments of the present invention, the Internet of Things control module is further connected to an audible and visual alarm mechanism via wire or wireless connection.

[0015] In one or more embodiments of the present invention, the mounting assembly includes a fixing seat and a fixing clamp, the fixing seat is detachably mounted on the bottom end of the film guide machine, the driving assembly includes an electric push rod, the electric push rod is fixedly mounted on the fixing seat, and the fixing clamp is fixedly mounted on the telescopic end of the electric push rod.

[0016] In one or more embodiments of the present invention, a clamping groove is provided on the fixing fixture, and the silicon wafer model is clamped inside the clamping groove, and the silicon wafer model can slide inside the clamping groove.

[0017] In one or more embodiments of the present invention, a limiting groove is provided on the clamping groove, a spring is fixedly installed on one side of the limiting groove, a pressure sensor is fixedly installed on the other side of the limiting groove, a limiting block is fixedly installed on the silicon wafer model, the limiting block is slidably connected to the limiting groove, and the limiting block is fixedly connected to the spring.

[0018] In one or more embodiments of the present invention, a first sliding gap is provided between one side of the silicon wafer model and one side inside the clamping groove, and a second sliding gap is provided between the limit block and the pressure sensor, and the length of the first sliding gap is greater than the length of the second sliding gap.

[0019] In one or more embodiments of the present invention, the visual inspection mechanism includes a mounting plate, a data processing box and a miniature camera. The mounting plate is fixedly mounted on the bottom end of the silicon wafer model, multiple miniature cameras are fixedly mounted on the mounting plate, the data processing box is fixedly mounted on the mounting plate, and the data processing box and the miniature camera are connected by wire.

[0020] In one or more embodiments of the present invention, a flower basket pressing mechanism is installed on the electric lifting frame, and the flower basket pressing mechanism includes a pressing cylinder and a pressing plate.

[0021] In one or more embodiments of the present invention, the pressing cylinder is fixedly mounted on the top of the electric lifting frame, and the pressing plate is fixedly mounted on the telescopic end of the pressing cylinder, and the pressing plate is used to press and fix the flower basket.

[0022] Compared with the prior art, the embodiments of the present invention have the following technical effects:

[0023] The present invention uses a visual inspection mechanism and a pre-test mechanism to perform a preliminary visual inspection on the flower basket before loading, and promptly discover flower baskets with deformed and damaged teeth. At the same time, before loading, the present invention can use a silicon wafer model to simulate silicon wafer loading, so as to ensure that the silicon wafers can be smoothly loaded into the flower basket, so that the silicon wafer loading has double protection, effectively preventing the occurrence of wafer blockage and silicon wafer crushing during the loading process, ensuring normal production, and avoiding unnecessary economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of an anti-blocking sheet basket loading system according to one embodiment of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of an anti-blocking sheet basket loading system according to one embodiment of the present invention. Figure 2 ;

[0026] Figure 3 This is a front view of a flower basket loading system for anti-blocking sheets according to one embodiment of the present invention;

[0027] Figure 4 Schematic diagram of a visual inspection mechanism and a pre-test mechanism of an anti-blocking sheet basket loading system according to one embodiment of the present invention;

[0028] Figure 5 This is an exploded view of a visual inspection mechanism and a pre-test mechanism of an anti-blocking sheet basket loading system according to one embodiment of the present invention;

[0029] Figure 6 The invention relates to an anti-blocking sheet basket loading system according to an embodiment of the present invention. Figure 3 Enlarged view of point A in the middle;

[0030] Figure 7 The present invention is a system block diagram of an anti-blocking sheet basket loading system according to one embodiment of the present invention.

[0031] Description of main reference numerals:

[0032] 1. Base; 2. Wafer guide; 3. Fixed seat; 301. Fixing bolt; 4. Silicon wafer model; 401. Limit block; 5. Visual inspection mechanism; 501. Mounting plate; 502. Data processing box; 503. Miniature camera; 6. Lifting guide rail; 7. Electric lifting frame; 701. Clamping cylinder; 702. Pressing plate; 8. Flower basket body; 9. Electric push rod; 10. Fixing fixture; 1001. Clamping slot; 1002. Limit slot; 1003. Spring; 1004. Pressure sensor. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0034] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations such as "include" or "comprising", etc., will be understood to include the stated elements or components but not to exclude other elements or other components.

[0035] like Figures 1 to 7 As shown, an anti-blocking wafer basket loading system according to a preferred embodiment of the present invention includes a base 1, which is used to support the wafer guide machine 2 and place the wafer guide machine 2 at a certain height to ensure that the silicon wafers can be loaded into the interior of the basket body 8 from top to bottom in sequence.

[0036] Ginseng Figure 1 and Figure 2 As shown, the wafer guide 2 is fixedly mounted on the base 1, and a conveyor belt is mounted on the wafer guide 2. The robotic arm grabs the silicon wafers and places them evenly on the conveyor belt, which then delivers the silicon wafers into the basket.

[0037] Ginseng Figure 1 and Figure 2 As shown, the flower basket lifting mechanism includes a lifting rail 6 and an electric lifting frame 7, which is slidably connected to the lifting rail 6. The electric lifting frame 7 is pulled by a drag chain driven by a motor, allowing it to be freely raised and lowered on the lifting rail 6. The flower basket is installed inside the electric lifting frame 7 and can be automatically raised and lowered for splicing.

[0038] Among them, Figure 3 As shown, the electric lift 7 is equipped with a basket clamping mechanism, which includes a clamping cylinder 701 and a pressure plate 702. The clamping cylinder 701 is fixedly mounted on the top of the electric lift 7, with its telescopic end extending into the interior of the electric lift 7. The pressure plate 702 is fixedly mounted on the telescopic end of the clamping cylinder 701. The clamping cylinder 701 can drive the pressure plate 702 to move upward and downward. The pressure plate 702 is used to clamp and secure the basket body 8 inside the electric lift 7, preventing it from shaking during film loading and improving film loading stability.

[0039] Specifically, Figures 1 to 3 As shown, the basket is placed inside the electric lift 7 and held in place by a pressure plate 702. During wafer loading, the silicon wafer is transported by the wafer guide 2 and inserted between the teeth of the basket body 8. The drag chain then drives the electric lift 7 upward in a stepwise manner, allowing the next silicon wafer to be inserted between the next set of teeth. This process continues until all the teeth on the basket body 8 are filled with silicon wafers, completing the wafer loading process for one set of basket bodies 8.

[0040] Ginseng Figure 1 、 Figure 4 and Figure 5 As shown, the visual inspection mechanism 5 is fixedly mounted below the silicon wafer model 4 and is used to visually inspect the flower basket before pre-testing. The visual inspection mechanism 5 comprises a mounting plate 501, a data processing box 502, and a miniature camera 503. The mounting plate 501 is fixedly mounted to the bottom of the silicon wafer model 4. Bolts penetrate the mounting plate 501, and corresponding screw holes are provided in the silicon wafer model 4. The mounting plate 501 is bolted to the bottom of the silicon wafer model 4, making it easy to disassemble, inspect, and maintain.

[0041] Ginseng Figure 5 As shown, two groups of micro cameras 503 are symmetrically mounted on the mounting plate 501. The two symmetrically arranged groups of micro cameras 503 can more accurately capture the teeth image on the flower basket body 8, thereby improving the accuracy of detection.

[0042] Ginseng Figure 5 As shown, the data processing box 502 is fixedly mounted on the mounting plate 501, and a wired connection is established between the data processing box 502 and the micro camera 503. The image captured by the micro camera 503 can be sent to the data processing box 502 via the data line. The data processing box 502 analyzes and converts the image and sends the corresponding signal to the IoT control module.

[0043] Specifically, after the unmounted flower basket body 8 is pressed and secured within the electric lift 7, the micro-camera 503 captures an image of the flower basket body 8. The data processing box 502 compares the captured image with a pre-stored standard image to determine whether the flower basket body 8 is deformed or damaged. If deformation or damage is detected, the data processing box 502 sends a signal to the IoT control module, which issues a warning signal, prompting the user to replace the flower basket promptly.

[0044] Ginseng Figure 1 and Figure 3 As shown, the pre-testing mechanism is installed below the wafer guide 2. The pre-testing mechanism includes a mounting assembly, a driving assembly and a silicon wafer model 4. The driving assembly can push and pull the silicon wafer model 4 into the flower basket body 8, thereby performing pre-testing before loading.

[0045] Among them, Figure 3 and Figure 4 As shown, the installation assembly includes a fixing seat 3 and a fixing clamp 10. Multiple groups of fixing bolts 301 pass through the fixing seat 3. The lower end of the guide machine 2 is provided with screw holes matching the fixing bolts 301. The fixing seat 3 is fixedly installed under the guide machine 2 by the fixing bolts 301. It can be flexibly disassembled and assembled, which is convenient for subsequent inspection and maintenance.

[0046] Ginseng Figure 4 and Figure 5 As shown, the driving assembly includes an electric push rod 9, at least one set of electric push rods 9 is fixedly installed on the fixing seat 3, and a fixing fixture 10 is fixedly installed on the telescopic end of the electric push rod 9.

[0047] The silicon wafer model 4 is the same size and thickness as the silicon wafer used in production, which can more realistically simulate the silicon wafer loading action. To ensure that the silicon wafer model 4 does not wear the flower basket body 8, the material of the silicon wafer model 4 can be selected from PVDF, nylon, or fluoropolymer.

[0048] Ginseng Figure 5 and Figure 6 As shown, the fixing fixture 10 is designed in a C-shaped structure, and a clamping groove 1001 is opened on the fixing fixture 10. The silicon wafer model 4 is clamped inside the clamping groove 1001 and can slide inside the clamping groove 1001.

[0049] Ginseng Figure 6 As shown, a limit slot 1002 is defined in the clamping slot 1001. A spring 1003 is fixedly mounted on one side of the limit slot 1002, and a pressure sensor 1004 is fixedly mounted on the other side of the limit slot 1002. A limit block 401 is fixedly mounted on the silicon wafer model 4 and slidably connected within the limit slot 1002. The limit block 401 is used to limit the position of the silicon wafer model 4, preventing it from slipping or shifting. The limit block 401 is fixedly connected to the spring 1003. If the silicon wafer model 4 encounters resistance and slides, the resistance is removed, allowing the limit block 401 to drive the silicon wafer model 4 back to its original position via the spring 1003.

[0050] Ginseng Figure 6 As shown, a first sliding gap is defined between one side of the silicon wafer model 4 and one side of the interior of the clamping groove 1001, and a second sliding gap is defined between the stopper 401 and the pressure sensor 1004. The length of the first sliding gap is greater than the length of the second sliding gap. The sliding distance of the stopper 401 within the stopper groove 1002 is less than the sliding distance of the silicon wafer model 4 within the clamping groove 1001, ensuring that the stopper 401 can slide into contact with the pressure sensor 1004 to generate a sensing signal.

[0051] Specifically, while the silicon wafer is being transported on the wafer guide 2 for insertion, the electric push rod 9 starts the push-pull fixture 10, so that the silicon wafer model 4 is quickly inserted between the teeth below and quickly pulled out, performing a pre-insertion test on the teeth that have not yet been loaded.

[0052] At this time, if the silicon wafer model 4 can complete the insertion and withdrawal action smoothly and quickly, it means that the teeth are intact and the subsequent wafer loading can be completed smoothly.

[0053] It is worth noting that when the silicon wafer model 4 is successfully inserted between the teeth, the surface of the teeth can also be scraped, which can remove possible dirt on the teeth during the loading test, avoid residual dirt on the teeth from contaminating the silicon wafer, and improve product quality.

[0054] If the silicon wafer model 4 encounters resistance during insertion, preventing it from being inserted between the teeth of the flower basket body 8, this indicates that the teeth at that location on the flower basket body 8 are damaged. Unable to enter between the teeth, the silicon wafer model 4 slides backward due to the resistance, driving the stopper 401 within the stopper slot 1002. This pushes against the pressure sensor 1004. The pressure sensor 1004 sends a signal to the IoT control module, indicating that the flower basket body 8 is deformed or damaged.

[0055] Furthermore, if the teeth on the basket body 8 are not deformed significantly enough, even though the electric push rod 9 can push the silicon wafer mold 4 between the teeth, the silicon wafer mold 4 will encounter significant frictional resistance. Due to this frictional resistance, the silicon wafer will still be unable to enter between the teeth, resulting in a blockage. Even if it can enter, it will cause significant wear on the silicon wafer, affecting product quality.

[0056] During the pre-test, the stopper 401 will still move under the action of friction and contact the pressure sensor 1004, causing the pressure sensor 1004 to sense the signal. In this way, whether the tooth deformation is severe or slight, it can be detected by the test piece, improving the accuracy and reliability of the test piece test.

[0057] After receiving the signal, the IoT control module marks the damaged tooth. When the marked tooth moves to the wafer loading position, the IoT control module controls the operation of the motor, causing the drag chain to drive the electric lifting frame 7 to slide upward two steps, thereby skipping the damaged tooth and avoiding wafer blockage or wafer crushing.

[0058] It is worth noting that during the wafer loading test of the silicon wafer model 4, while the silicon wafer model 4 is inserted into the interior of the teeth, the visual inspection mechanism 5 also follows it close to the teeth on the basket body 8. At this time, the data processing box 502 can also obtain the image of the teeth at a closer distance, thereby performing more accurate image judgment and analysis of the teeth, thereby performing more accurate secondary visual inspection of the teeth and improving the accuracy of visual inspection.

[0059] At the same time, closer visual inspection can also assess the condition of the teeth, such as the presence of cracks, surface smoothness, and cleanliness. Cracks, rough surfaces, and unclean surfaces can damage silicon wafers, and timely inspection can effectively protect the silicon wafers and improve the yield rate of cell production.

[0060] Ginseng Figure 7 As shown, the visual inspection mechanism 5 and the pre-test mechanism are both connected to the Internet of Things control module by wire or wireless. The Internet of Things control module is also connected to the sound and light alarm mechanism by wire or wireless. The sound and light alarm mechanism includes a sound and light warning light, which is connected to the Internet of Things control module by wire.

[0061] Specifically, the visual inspection mechanism 5 and the pre-test mechanism are both used to analyze and detect the status of the flower basket body 8. Upon receiving signals from the visual inspection mechanism 5 and the pre-test mechanism, the IoT control module indicates an abnormality in the flower basket body 8. Upon this, the IoT control module immediately activates an audible and visual warning light to prompt relevant personnel to take timely countermeasures, thereby avoiding significant economic losses and improving production safety.

[0062] During use, the basket body 8 first enters the interior of the electric lift 7. Once in position, the pressing cylinder 701 drives the pressing plate 702 downward, pressing and securing the basket body 8. At this point, the micro-camera 503 captures an image of the basket body 8 and analyzes the captured image to identify any deformation or damage. Driven by the drag chain, the basket body 8 gradually rises. During the wafer loading process, a robotic arm grabs a silicon wafer and places it on the wafer guide 2. The wafer is then transported from the wafer guide 2 into the space between the teeth on the basket body 8. Simultaneously, as the wafer enters the space between the teeth, the wafer mold 4 below the wafer guide 2, driven by the electric push rod 9, enters the space between the teeth below, thereby performing a simulated wafer loading test to ensure that subsequent wafers can smoothly enter the space between the teeth.

[0063] The present invention uses the visual inspection mechanism 5 and the pre-test mechanism to perform a preliminary visual inspection of the flower basket before loading, and promptly discover flower baskets with deformed or damaged teeth. At the same time, before loading, the silicon wafer model 4 can be used to simulate silicon wafer loading, thereby ensuring that the silicon wafers can be smoothly loaded into the flower basket, providing dual protection for silicon wafer loading, effectively preventing blockage and crushing of silicon wafers during the loading process, ensuring normal production, and avoiding unnecessary economic losses.

[0064] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the invention and various options and modifications. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A anti-blocking sheet basket loading system, characterized in that: include: base; A wafer guide machine is fixedly mounted on the base, and a conveyor belt is mounted on the wafer guide machine, and the conveyor belt is used to feed the silicon wafers into the flower basket; A pre-test wafer mechanism is installed below the wafer guide. The pre-test wafer mechanism includes a mounting assembly, a drive assembly, and a silicon wafer model. The drive assembly can push and pull the silicon wafer model into the wafer basket, thereby pre-testing the wafer on the wafer basket teeth before loading. The visual inspection mechanism is fixedly installed below the silicon wafer model and is used to visually inspect the flower baskets before pre-testing. It obtains images of the flower basket teeth and promptly detects flower baskets with deformed teeth. The flower basket lifting mechanism includes a lifting guide rail and an electric lifting frame. The electric lifting frame is driven by a motor to slide and lift on the lifting guide rail. The flower basket is installed inside the electric lifting frame and can automatically rise and fall to connect the flowers. During the pre-wafer test of the silicon wafer model, while the silicon wafer model is inserted into the teeth, the visual inspection mechanism also follows it close to the teeth on the flower basket body, so as to perform a more accurate secondary visual inspection of the teeth.

2. The anti-blocking sheet basket loading system according to claim 1, characterized in that: It also includes an Internet of Things control module, and the visual inspection mechanism and the pre-test mechanism are both connected to the Internet of Things control module by wire or wirelessly.

3. The anti-blocking sheet basket loading system according to claim 2, characterized in that: The Internet of Things control module is also connected to an audible and visual alarm mechanism by wire or wireless connection.

4. The anti-blocking sheet basket loading system according to claim 1, characterized in that: The mounting assembly includes a fixing seat and a fixing clamp, the fixing seat is detachably mounted on the bottom end of the film guide machine, the driving assembly includes an electric push rod, the electric push rod is fixedly mounted on the fixing seat, and the fixing clamp is fixedly mounted on the telescopic end of the electric push rod.

5. The anti-blocking sheet basket loading system according to claim 4, characterized in that: The fixing fixture is provided with a clamping groove, the silicon wafer model is clamped inside the clamping groove, and the silicon wafer model can slide inside the clamping groove.

6. The anti-blocking sheet basket loading system according to claim 5, characterized in that: A limiting groove is provided on the clamping groove, a spring is fixedly installed on one side of the limiting groove, a pressure sensor is fixedly installed on the other side of the limiting groove, a limiting block is fixedly installed on the silicon wafer model, the limiting block is slidably connected to the limiting groove, and the limiting block is fixedly connected to the spring.

7. The anti-blocking sheet basket loading system according to claim 6, characterized in that: A first sliding gap is provided between one side of the silicon wafer model and one side inside the clamping groove, and a second sliding gap is provided between the limit block and the pressure sensor. The length of the first sliding gap is greater than that of the second sliding gap.

8. The anti-blocking sheet basket loading system according to claim 1, characterized in that: The visual inspection mechanism includes a mounting plate, a data processing box and a miniature camera. The mounting plate is fixedly installed on the bottom end of the silicon wafer model. Multiple groups of miniature cameras are fixedly installed on the mounting plate. The data processing box is fixedly installed on the mounting plate. The data processing box and the miniature camera are connected by wire.

9. The anti-blocking sheet basket loading system according to claim 1, characterized in that: A flower basket pressing mechanism is installed on the electric lifting frame, and the flower basket pressing mechanism includes a pressing cylinder and a pressing plate.

10. The anti-blocking sheet basket loading system according to claim 9, characterized in that: The pressing cylinder is fixedly mounted on the top of the electric lifting frame, and the pressing plate is fixedly mounted on the telescopic end of the pressing cylinder. The pressing plate is used to press and fix the flower basket.

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