Multifunctional photovoltaic silicon wafer arranging machine

Abstract

The utility model relates to the technical field of photovoltaic silicon wafer production, in particular to a multifunctional photovoltaic silicon wafer arranging machine, which can quickly and accurately separate stacked silicon wafers by utilizing the synergistic effect of a sprinkler head and a sorting driving wheel. The detection assembly is arranged on the front portion of the conveying track line to comprehensively detect the silicon wafers, abnormal wafers can be accurately recognized, the abnormal wafers are removed in time through the abnormal wafer removing assembly, it is ensured that the quality of the silicon wafers entering the follow-up process is qualified, and the product quality stability is improved; a two-shaft linkage transferring assembly of the wafer feeding and basketing mechanism can accurately control movement of a basket, and automatic basketing of the silicon wafers is achieved; the transferring basket changing mechanism completes automatic changing of full baskets and empty baskets through cooperation of a mechanical arm and a double-station clamping hand, manual intervention is not needed in the whole process, the production efficiency is greatly improved, and the labor cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic silicon wafer production technology, and in particular to a multifunctional photovoltaic silicon wafer stacking machine. Background Technology

[0002] In the photovoltaic industry, silicon wafer production and processing are crucial links. Traditional silicon wafer sorting machines have many functional shortcomings and cannot meet the needs of modern photovoltaic production. First, traditional sorting machines often cannot efficiently and accurately separate stacked silicon wafers during the sorting process, resulting in low production efficiency and a high risk of wafer damage. Second, during the conveying process, they lack effective detection and defective wafer rejection functions, allowing defective silicon wafers to be mixed into subsequent processes, affecting product quality. Furthermore, traditional sorting machines also need improvement in automation, failing to achieve fully automated operation from silicon wafer sorting, conveying, basket loading to basket changing, increasing manual intervention costs and error rates. Therefore, developing a multi-functional photovoltaic silicon wafer sorting machine with more comprehensive functions, higher efficiency, and a higher degree of automation is of significant practical importance. Utility Model Content

[0003] To achieve the above objectives, this utility model provides a multifunctional photovoltaic silicon wafer stacking machine, comprising the following components arranged sequentially along the silicon wafer conveying direction:

[0004] A silicon wafer sorting mechanism is installed inside a water tank. The silicon wafer sorting mechanism includes a lifting component and a wafer-splitting component. The wafer-splitting component includes a sorting drive wheel and a water spray head disposed below the sorting drive wheel. The water spray head is horizontally arranged and faces the stacked silicon wafers of the material tray.

[0005] The conveyor track is equipped with a detection component at the front and an abnormal piece rejection component in the middle.

[0006] The loading mechanism is located at the rear end of the conveyor track and includes a two-axis linkage transfer assembly. The two-axis linkage transfer assembly is used to drive the flower basket to move horizontally and vertically so that the loading layer on the flower basket is aligned with the conveyor track.

[0007] The transfer and basket changing mechanism includes a robotic arm and a dual-station gripper located at the output end of the robotic arm. An empty basket placement area and a full basket placement area are also provided on one side of the robotic arm.

[0008] In some possible embodiments, the spray head includes a front spray head and two sets of oppositely arranged side spray heads, both of which are aligned with the gap between the two silicon wafers stacked at the top of the material tray.

[0009] In some possible embodiments, the detection assembly includes a gantry support mounted on the conveyor track, on which a vertically downward ultrasonic sensor and a plurality of photoelectric sensors are mounted.

[0010] In some possible embodiments, the defective wafer rejection assembly includes a first roller and a second roller arranged front and rear, with a waste box disposed below the second roller. Each of the first and second rollers is fitted with a freely rotatable conveyor wheel. The second roller is connected to a swing drive source. The first roller and the second roller are connected by a drive rod. The swing drive source drives the second roller to rotate, thereby causing the first roller to swing upward, so that the silicon wafer falls from the conveyor track into the waste box.

[0011] In some possible embodiments, the output end of the two-axis linkage transfer assembly is provided with a positioning plate, the positioning plate is provided with a plurality of positioning pin holes, and the lower end of the flower basket is provided with a positioning pin shaft corresponding to the positioning pin holes.

[0012] In some possible embodiments, the basket has several stacked loading plates at intervals, with the loading layer formed between two adjacent loading plates. The wall thickness of the loading plate at the front end narrows from the top and bottom to the middle to form a guide opening at the inlet and outlet of the loading layer.

[0013] In some possible embodiments, multiple sets of conveyor belts are provided on the conveyor track, all of which are flush and driven independently.

[0014] In some possible embodiments, the bottom of the tray is provided with an inclined base plate, and the silicon wafers are stacked on the tray in an inclined state.

[0015] In some possible embodiments, the front end of the conveyor track is adapted to the inclined base plate of the material tray, is inclined downward and extends close to the segment assembly.

[0016] In some possible embodiments, the lifting assembly includes a tray and a lifting drive source for driving the tray up and down, with the material tray fixedly placed on the tray.

[0017] Compared with existing technologies, the advantages of this invention are as follows: The silicon wafer stacking machine utilizes the synergistic effect of a water spray head and a sorting drive wheel to quickly and accurately separate stacked silicon wafers; a detection component is installed at the front of the conveyor track to comprehensively inspect the silicon wafers, accurately identifying abnormal wafers and promptly removing them through an abnormal wafer rejection component, ensuring the quality of silicon wafers entering subsequent processes and improving product quality stability; the two-axis linkage transfer component of the wafer loading basket mechanism can precisely control the movement of the basket, achieving automated wafer loading; the transfer basket changing mechanism, through the cooperation of a robotic arm and a dual-station gripper, automatically changes between full and empty baskets. The entire process requires no manual intervention, greatly improving production efficiency and reducing labor costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural diagram of the multifunctional photovoltaic silicon wafer stacking machine provided in this embodiment of the utility model;

[0020] Figure 2 A three-dimensional structural assembly drawing of the silicon wafer sorting mechanism provided in an embodiment of this utility model;

[0021] Figure 3 A three-dimensional structural diagram of the conveyor track provided in an embodiment of this utility model;

[0022] Figure 4 A three-dimensional structural diagram of the flower basket provided in an embodiment of this utility model.

[0023] Reference numerals: 1. Silicon wafer sorting mechanism; 11. Lifting assembly; 111. Tray; 112. Lifting drive source; 12. Segmentation assembly; 121. Segmentation drive wheel; 122a. Front nozzle; 122b. Side nozzle; 13. Material support; 131. Inclined base plate; 2. Conveying track line; 2. Detection assembly; 211. Gantry bracket; 212. Ultrasonic sensor; 213. Photoelectric sensor; 22. Abnormal wafer rejection assembly; 22. First roller shaft; 222. Second roller shaft; 223. Waste box; 224. Conveying wheel; 226. Drive rod; 23. Conveyor belt; 3. Wafer loading and basket loading mechanism; 3. Two-axis linkage transfer assembly; 31. Positioning pallet; 311. Basket; 32. Positioning pin; 321. Loading plate; 322. Guide opening; 324. Transfer and basket changing mechanism; 4. Robotic arm; 41. Dual-station gripper; 42. Empty basket placement area; 43. Full basket placement area; 44. Water tank; 5. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0025] Reference Figure 1 The multifunctional photovoltaic silicon wafer sorting machine shown includes a silicon wafer sorting mechanism 1, a conveying track 2, a wafer loading basket mechanism 3, and a transfer basket changing mechanism 4 arranged sequentially along the silicon wafer conveying direction.

[0026] Reference Figure 1 and Figure 2 As shown, the silicon wafer sorting mechanism 1 is located inside the water tank 5 and mainly includes a lifting assembly 11 and a slitting assembly 12. The lifting assembly 11 consists of a tray 111 and a lifting drive source 112. The wafer tray 13 is fixedly placed on the tray 111. The lifting drive source 112 can be a common drive device such as an electric push rod or a cylinder, used to drive the tray 111 to lift and lower, thereby adjusting the height position of the silicon wafers in the wafer tray 13. The slitting assembly 12 includes a sorting drive wheel 121 and a water spray head. The water spray head is located below the sorting drive wheel 121 and is horizontally oriented towards the stacked silicon wafers in the wafer tray 13. The water spray head specifically includes a front spray head 122a and two sets of oppositely arranged side spray heads 122b. Both the front spray head 122a and the side spray heads 122b are precisely aligned with the gap between the two silicon wafers stacked at the top of the wafer tray 13. During operation, the sorting drive wheel 121 rotates, driving the uppermost silicon wafer forward. At the same time, the water jet from the spray head impacts the gaps in the silicon wafers, using the resistance and impact force of the water to separate the silicon wafers one by one and transport them stably. This effectively avoids the situation where multiple silicon wafers are transported at the same time, improving the sorting accuracy and the integrity of the silicon wafers.

[0027] Reference Figure 1 and Figure 3As shown, a detection assembly 21 is installed at the front of the conveyor track 2, and a defective wafer rejection assembly 22 is installed in the middle. The detection assembly 21 includes a gantry bracket 211 mounted on the conveyor track 2. The gantry bracket 211 is equipped with an ultrasonic sensor 212 and multiple photoelectric sensors 213 mounted vertically downwards. The ultrasonic sensor 212 is used to accurately measure the thickness of the silicon wafer to check for duplicate wafers. The photoelectric sensors 213 can be used to detect parameters such as the shape and size of the silicon wafer and surface defects, and transmit the detection signals to the control system. The defective wafer rejection assembly 22 consists of a first roller 221 and a second roller 222 arranged at opposite ends. A waste box 223 is installed below the second roller 222. A freely rotating conveyor wheel 224 is sleeved on both the first roller 221 and the second roller 222. The second roller 222 is connected to a swing drive source (not shown). The first roller 221 and the second roller 222 are connected by a drive rod 226. When the detection component 21 detects an abnormal silicon wafer, the control system issues a command, and the swing drive source drives the second roller shaft 222 to rotate. Through the drive rod 226, the first roller shaft 221 swings upward by 15°, causing the abnormal silicon wafer to fall from the conveyor track 2 into the waste box 223. This achieves rapid and accurate rejection of abnormal silicon wafers and ensures product quality.

[0028] Reference Figure 1 and Figure 4 As shown, the wafer loading mechanism 3 is located at the rear end of the conveyor track 2 and includes a two-axis linkage transfer assembly 31. A positioning plate 311 is installed at the output end of the two-axis linkage transfer assembly 31. The positioning plate 311 has several positioning pin holes (not shown). The lower end of the wafer basket 32 ​​is provided with positioning pin shafts 321 corresponding to the positioning pin holes. The two-axis linkage transfer assembly 31 can be driven by a lead screw slide or linear motor, which can drive the wafer basket 32 ​​to move horizontally and vertically, ensuring precise alignment of the loading layer (not shown) on the wafer basket 32 ​​with the conveyor track 2. When the silicon wafer is conveyed to the loading position, the two-axis linkage transfer assembly 31 moves the wafer basket 32 ​​to the corresponding position. The silicon wafer falls into the loading layer of the wafer basket 32 ​​under its own gravity or the action of an auxiliary pushing mechanism, realizing automated wafer loading operation. In this embodiment, the flower basket 32 ​​can be a full flower basket or a double-row half-flower basket. Both have the same external dimensions and the same positioning pin 321. When using a double-row half-flower basket for production, the two-axis linkage transfer assembly 31 can drive the flower basket 32 ​​horizontally to one of the loading layers, aligning it with the conveyor track 2. Once that row is full, the other loading layer is switched for production. Alternatively, the two loading layers can be used alternately for production until the flower basket is full. This production line can achieve compatibility and switching between full-sheet and double-row half-sheet production, significantly increasing production capacity and reducing energy consumption.

[0029] Reference Figure 1As shown, the basket transfer mechanism 4 includes a robotic arm 41 and a dual-station gripper 42 located at the output end of the robotic arm 41. An empty basket placement area 43 and a full basket placement area 44 are also provided on one side of the robotic arm 41. Driven by the robotic arm 41, the dual-station gripper 42 can simultaneously grasp empty and full baskets, enabling rapid basket replacement. When a basket 32 ​​is filled with silicon wafers, the robotic arm 41 drives the dual-station gripper 42 to move the full basket to the full basket placement area 44, while simultaneously grasping an empty basket from the empty basket placement area 43 and moving it to the basket loading position to continue the basket loading operation, greatly improving production efficiency and reducing basket changing time.

[0030] Reference Figure 4 As shown, several stacked loading plates 322 are formed on the basket 32, with a loading layer (not shown) between adjacent loading plates 322. The wall thickness of the loading plate 322 narrows from the top and bottom to the middle, forming a guide opening 324 at the inlet and outlet of the loading layer. This design not only provides stable support for the silicon wafer, preventing it from slipping during transportation, but also facilitates the entry and exit of the silicon wafer through the guide opening 324, allowing the silicon wafer to enter the loading layer more smoothly and reducing collisions and damage between the silicon wafer and the loading plate 322.

[0031] Reference Figure 3 As shown, multiple sets of conveyor belts 23 are installed on the conveyor track 2. All conveyor belts 23 are arranged flush and driven independently. Each set of conveyor belts 23 is driven by a separate motor, which can be flexibly adjusted according to the different sizes of silicon wafers and conveying requirements to achieve precise position control and flexible conveying of silicon wafers.

[0032] Reference Figure 2 As shown, the bottom of the material tray 13 is provided with an inclined base plate 131, and the silicon wafers are stacked on the material tray 13 in an inclined state. The design of the inclined base plate 131 makes the silicon wafers naturally tilt to one side of the material tray 13 under the action of gravity, which facilitates the sorting operation of the slitting assembly 12, improves the sorting efficiency, and also reduces the disorderly accumulation of silicon wafers in the material tray 13, reducing the risk of silicon wafer damage.

[0033] Reference Figure 3 As shown, the front end of the conveyor track 2 is adapted to the inclined base plate 131 of the material tray 13, and is inclined downwards and extends close to the slab assembly 12. This inclined setting allows the silicon wafer to be conveyed more smoothly from the material tray 13 to the slab assembly 12 under its own gravity, reducing the conveying resistance and improving the stability and continuity of the entire conveying process.

[0034] In actual operation, the stacked silicon wafer tray 13 is first placed on the tray 111 of the silicon wafer sorting mechanism 1. The height of the tray 13 is adjusted by the lifting drive source 112 to ensure that the top silicon wafer is in the appropriate position. The sorting drive wheel 121 rotates and, in conjunction with the water jet impact, separates the silicon wafers one by one and transports them to the conveyor track 2. At the front of the conveyor track 2, the detection component 21 performs a comprehensive inspection of the silicon wafers. If an abnormal silicon wafer is found, the abnormal wafer rejection component 22 quickly rejects it into the waste box 223. The qualified silicon wafers that have been inspected and rejected continue to be transported along the conveyor track 2 to the rear loading basket mechanism 3. The two-axis linkage transfer component 31 moves the basket 32 ​​to the corresponding position according to the control system command, so that the loading layer on the basket 32 ​​is precisely aligned with the conveyor track 2, and the silicon wafer falls into the loading layer to complete the loading. Once a basket 32 ​​is full, the robotic arm 41 of the transfer and basket changing mechanism 4 drives the dual-station gripper 42 to move the full basket to the full basket placement area 44. At the same time, it grabs the empty basket in the empty basket placement area 43 and moves it to the basket loading position to continue the basket loading operation, thereby achieving continuous and efficient silicon wafer stacking production.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A multifunctional photovoltaic silicon wafer stacking machine, characterized in that, Including those arranged sequentially along the silicon wafer transport direction: A silicon wafer sorting mechanism (1) is set inside a water tank (5). The silicon wafer sorting mechanism (1) includes a lifting component (11) and a slitting component (12). The slitting component (12) includes a sorting drive wheel (121) and a water spray head set below the sorting drive wheel (121). The water spray head is horizontally set and faces the stacked silicon wafer direction of the material tray (13). The conveyor track (2) is equipped with a detection component (21) at the front and an abnormal piece rejection component (22) in the middle; The loading mechanism (3) is located at the rear end of the conveying track (2) and includes a two-axis linkage transfer assembly (31). The two-axis linkage transfer assembly (31) is used to drive the flower basket (32) to move horizontally and vertically so that the loading layer on the flower basket (32) is aligned with the conveying track (2). The transfer basket changing mechanism (4) includes a robotic arm (41) and a dual-station gripper (42) provided at the output end of the robotic arm (41). An empty basket placement area (43) and a full basket placement area (44) are also provided on one side of the robotic arm (41).

2. The multifunctional photovoltaic silicon wafer stacking machine according to claim 1, characterized in that, The water spray head includes a front spray head (122a) and two sets of oppositely arranged side spray heads (122b), both of which are aligned with the gap between the two silicon wafers stacked at the top of the material tray (13).

3. The multifunctional photovoltaic silicon wafer stacking machine according to claim 1, characterized in that, The detection component (21) includes a gantry support (211) mounted on the conveying track (2), and the gantry support (211) is equipped with an ultrasonic sensor (212) and a plurality of photoelectric sensors (213) facing downward in the vertical direction.

4. The multifunctional photovoltaic silicon wafer stacking machine according to claim 1, characterized in that, The defective wafer rejection assembly (22) includes a first roller (221) and a second roller (222) arranged in front and behind. A waste box (223) is arranged below the second roller (222). A freely rotatable conveyor wheel (224) is sleeved on both the first roller (221) and the second roller (222). The second roller (222) is connected to a swing drive source. The first roller (221) and the second roller (222) are connected by a drive rod (226). The swing drive source drives the second roller (222) to rotate, thereby driving the first roller (221) to swing upward, so that the silicon wafer falls from the conveyor track (2) into the waste box (223).

5. A multifunctional photovoltaic silicon wafer stacking machine according to claim 1, characterized in that, The output end of the two-axis linkage transfer assembly (31) is provided with a positioning plate (311), and the positioning plate (311) is provided with a plurality of positioning pin holes. The lower end of the flower basket (32) is provided with a positioning pin shaft (321) corresponding to the positioning pin holes.

6. The multifunctional photovoltaic silicon wafer stacking machine according to claim 1, characterized in that, The flower basket (32) has several stacked loading plates (322) arranged at intervals. The loading layer is formed between two adjacent loading plates (322). The wall thickness of the front end of the loading plate (322) narrows from the top and bottom sides to the middle to form a guide opening (324) at the inlet and outlet of the loading layer.

7. A multifunctional photovoltaic silicon wafer stacking machine according to claim 1, characterized in that, Multiple sets of conveyor belts (23) are provided on the conveyor track (2), and all the conveyor belts (23) are arranged side by side and driven independently.

8. A multifunctional photovoltaic silicon wafer stacking machine according to claim 1, characterized in that, The bottom of the material tray (13) is provided with an inclined base plate (131), and the silicon wafers are stacked on the material tray (13) in an inclined state.

9. A multifunctional photovoltaic silicon wafer stacking machine according to claim 8, characterized in that, The front end of the conveying track (2) is adapted to the inclined bottom plate (131) of the material tray (13), and is inclined downward and extends close to the segment assembly (12).

10. A multifunctional photovoltaic silicon wafer stacking machine according to claim 1, characterized in that, The lifting assembly (11) includes a tray (111) and a lifting drive source (112) for driving the tray (111) to rise and fall, and the material tray (13) is fixedly placed on the tray (111).

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