Conveying structure suitable for photovoltaic cells
By designing a photovoltaic cell conveying structure including soft roller set and floating roller set, the battery scraping and chipping problems caused by traditional wet process equipment are solved, and a more stable and accurate conveying process is achieved.
Patent Information
- Application Number
- CN202420923089.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-04-29
AI Technical Summary
During the wet process of photovoltaic cell cells, traditional horizontal wet process equipment can easily cause slight scratches, wheel printing, compression, and even fragmentation of the cell panel surface.
A conveying structure suitable for photovoltaic cell cells is designed, including the lower conveying shaft and the upper conveying shaft. A soft roller set is set on the lower conveying shaft, a floating roller set is set on the upper conveying shaft, and mutual transmission is achieved through the transmission assembly to ensure that The silicon wafer travels steadily under the clamping of the floating roller set and the conveying roller set.
Through this conveying structure, scratches, wheel marks, and compressions on the battery plate surface are reduced, and the integrity and transmission accuracy of the battery are ensured.
Smart Images
Figure CN222530400U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of photovoltaic panel wet etching equipment, and in particular to a conveying structure suitable for photovoltaic cells. Background Art
[0002] In recent years, with the vigorous development of the photovoltaic industry, the demand for solar cells has been growing. As the requirements for solar cell conversion efficiency and economy continue to increase, the specifications of solar cells are also increasing. The thickness of the cell has gradually increased from 180um to 150, 140, 120, 110... and even 90um; the width of the electrode grid line has gradually increased from 30-40um to 10-20um; in addition, the reliability requirements for electrode oxidation resistance and battery life are also getting higher and higher.
[0003] In the manufacturing process of PV wet process equipment, taking the requirements of horizontal wet process equipment as an example, Figure 1 As shown in the figure, the conveying of silicon wafers is generally supported by sheet or columnar rollers. Because the conveying rollers are in multi-point or line contact with the surface of the photovoltaic cell, the upper and lower surfaces of the cell will directly contact the conveying rollers during the conveying process, which may easily cause slight scratches, wheel marks, crushing, and even cell breakage. Utility Model Content
[0004] In order to solve the above technical problems, the present application provides a conveying structure suitable for photovoltaic cells, which has the advantages of reducing minor scratches, wheel marks, pressure marks on the cell surface, and even cell breakage.
[0005] In order to achieve the above object, the technical solution of the utility model is as follows:
[0006] A conveying structure suitable for photovoltaic cells comprises a lower conveying shaft and an upper conveying shaft, wherein the lower conveying shaft is provided with a soft roller group, the upper conveying shaft is provided with a floating roller group, and a transmission assembly for mutual transmission is provided between the upper and lower conveying shafts.
[0007] To implement the above technical solution, when the product enters, the lower conveying shaft is driven to rotate by the driving motor, and then the upper conveying shaft is driven to rotate by the transmission assembly, and then the meshing rotation is used to drive the silicon wafer forward, and the product lifts the upper floating roller group through friction, so that each product moves forward stably under the clamping of the floating roller group and the conveying roller group. And because of the soft roller group and the floating roller group, the occurrence of scratches on the roller can be reduced.
[0008] As a preferred solution of the present application, the soft roller assembly includes a plurality of roller sheets sleeved on the lower conveying shaft, and limiting rings are provided on the lower conveying shaft at both ends of the plurality of roller sheets.
[0009] To implement the above technical solution, the setting of the limiting ring can prevent the roller from axially shaking, thereby ensuring the accuracy of transmission; the floating wheel is set as a silicone roller, which can further reduce the occurrence of scratches on the silicon wafer.
[0010] As a preferred solution of the present application, the floating roller group includes a plurality of floating wheels sleeved on the upper conveying shaft, each of the floating wheels is provided with a positioning sleeve at both axial ends for limiting its own axial movement, and the inner wall diameter of the floating wheel is larger than the outer wall diameter of the upper conveying shaft.
[0011] To implement the above technical solution, when the product enters, the lower conveyor is driven by the driving motor, and the product lifts the upper floating wheel through friction, thereby preventing the floating wheel from crushing the silicon wafer; each product is clamped by the floating wheel and the roller sheet and moves forward stably; and the setting of the positioning sleeve can prevent the product from deflecting due to the deviation of the entire roller.
[0012] As a preferred solution of the present application, the positioning sleeve includes an inner sleeve sleeved on the upper conveying shaft, the inner sleeve is provided with a conical elastic portion, the inner sleeve is sleeved with a pressing sleeve, and the pressing sleeve is provided with a conical pressing portion for pressing the elastic portion.
[0013] To implement the above technical solution, this structure replaces the limiting ring + stop screw design of the transmission design, thereby preventing the screw from loosening and falling onto the product, causing scratches, carding, broken pieces and other abnormalities.
[0014] As a preferred solution of the present application, the transmission assembly includes an upper gear arranged on the upper conveying shaft and a lower gear arranged on the lower conveying shaft, the upper gear and the lower gear are meshed with each other for transmission, and the lower conveying shaft is provided with a helical gear for transmission with the driving device.
[0015] To realize the above technical solution, the external driving device drives the spiral gear to rotate, thereby rotating the lower conveying shaft, and then drives the upper conveying shaft to rotate after the lower gear and the upper gear are meshed, thereby achieving the effect of driving the silicon wafer to be transported. Ceramic bearings are provided at both ends of the upper conveying shaft and the lower conveying shaft.
[0016] As a preferred solution of the present application, ceramic bearings are provided at both ends of the upper conveying shaft and the lower conveying shaft.
[0017] In summary, the present application includes at least one of the following beneficial technical effects:
[0018] 1. When the product enters, the lower conveying shaft is driven to rotate by the driving motor, and then the upper conveying shaft is driven to rotate by the transmission assembly, and then the meshing rotation is used to drive the silicon wafer forward. Through friction, the product lifts the upper floating roller group, so that each product moves forward stably under the clamping of the floating roller group and the conveying roller group. And because of the soft roller group and the floating roller group, the occurrence of roller scratches can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0021] Figure 2 It is a schematic diagram of the structure of the positioning sleeve in the embodiment of the present application.
[0022] Figure numerals: 1, lower conveying shaft; 2, upper conveying shaft; 3, soft roller group; 31, roller sheet; 32, limiting ring; 4, floating roller group; 41, floating wheel; 42, positioning sleeve; 43, inner sleeve; 44, elastic part; 45, pressing sleeve; 46, conical pressing part; 5, transmission assembly; 51, upper gear; 52, lower gear; 53, spiral gear; 54, ceramic bearing. DETAILED DESCRIPTION
[0023] The following is combined with Figure 1-2 This application is described in further detail.
[0024] The present application embodiment discloses a conveying structure suitable for photovoltaic cells. Figure 1 The conveying structure suitable for photovoltaic cells includes a lower conveying shaft 1 and an upper conveying shaft 2, a soft roller group 3 is arranged on the lower conveying shaft 1, a floating roller group 4 is arranged on the upper conveying shaft 2, and a transmission assembly 5 for mutual transmission is arranged between the upper conveying shaft 2 and the lower conveying shaft 1. When the product enters, the lower conveying shaft 1 is driven to rotate by the driving motor, and then the upper conveying shaft 2 is driven to rotate by the transmission assembly 5, and then the meshing rotation is used to drive the silicon wafer forward, and the upper floating roller group 4 is lifted by the product through friction, so that each product can move forward stably under the clamping of the floating roller group 4 and the conveying roller group. And because the setting of the soft roller group 3 and the floating roller group 4 with floating setting can reduce the occurrence of the roller being scratched.
[0025] The soft roller group 3 includes a plurality of roller pieces 31 sleeved on the lower conveying shaft 1, and the roller pieces 31 are silicone rollers. Limiting rings 32 are provided on the lower conveying shaft 1 at both ends of the plurality of roller pieces 31, that is, the setting of the limiting rings 32 can prevent the roller pieces 31 from axially shaking, thereby ensuring the accuracy of transmission. The floating wheel 41 is set as a silicone roller, which can further reduce the occurrence of scratches on the silicon wafer.
[0026] The floating roller group 4 includes a plurality of floating wheels 41 sleeved on the upper conveying shaft 2. Positioning sleeves 42 are provided at both ends of the axial direction of each floating wheel 41 for limiting its own axial movement. The inner diameter of the floating wheel 41 is larger than the outer diameter of the upper conveying shaft 2. When the product enters, the lower conveying shaft 2 is driven by the driving motor, and the upper floating wheel 41 is lifted by the product through friction, so that each product moves forward stably under the clamping of the floating wheel 41 and the roller sheet 31. The setting of the positioning sleeve 42 can prevent the product from deflecting due to the deflection of the entire roller.
[0027] The positioning sleeve 42 includes an inner sleeve 43 sleeved on the upper conveying shaft 2, a tapered elastic portion 44 is provided on the inner sleeve 43, a pressing sleeve 45 is sleeved on the inner sleeve 43, and a tapered pressing portion 46 for pressing the elastic portion 44 is provided on the pressing sleeve 45. Thus, the pressing sleeve 45 is gradually screwed on the inner sleeve 43, so that the tapered pressing portion 46 gradually presses the elastic portion 44, so that the inner sleeve 43 is fixed on the upper conveying shaft 2. This structure replaces the limiting ring 32+stop screw design of the transmission design, thereby preventing the screw from loosening and falling on the product, causing scratches, carding, broken pieces and other abnormalities.
[0028] The transmission assembly 5 includes an upper gear 51 arranged on the upper conveying shaft 2 and a lower gear 52 arranged on the lower conveying shaft 1. The upper gear 51 and the lower gear 52 are meshed with each other for transmission. The lower conveying shaft 1 is provided with a helical gear 53 for transmission with a driving device. That is, an external driving device drives the helical gear 53 to rotate, thereby rotating the lower conveying shaft 1, and then drives the upper conveying shaft 2 to rotate after the lower gear 52 and the upper gear 51 are meshed, thereby achieving the effect of driving the silicon wafer to be transported. Ceramic bearings 54 are provided at both ends of the upper conveying shaft 2 and the lower conveying shaft 1.
[0029] Ceramic bearings 54 are provided at both ends of the upper conveying shaft 2 and the lower conveying shaft 1. Ceramic or metal bearings are selected to make the entire conveying more stable and smooth. At the same time, the design of replacing the wear-resistant bushing with the bearing reduces the friction between the axis and the conveying shaft sleeve. Since the wear-resistant bushing is a consumable part, after being replaced with a bearing, the equipment operating cost of replacing consumable parts is also reduced.
[0030] The implementation principle of the conveying structure for photovoltaic cells in the embodiment of the present application is as follows: when the product enters, the lower conveying shaft 1 is driven to rotate by the driving motor, and then the upper conveying shaft 2 is driven to rotate by the transmission assembly 5, and then the meshing rotation is used to drive the silicon wafer forward, and the product lifts the upper floating roller group 4 through friction, so that each product moves forward stably under the clamping of the floating roller group 4 and the conveying roller group. And because the soft roller group 3 and the floating roller group 4 are set, the occurrence of roller scratches can be reduced.
[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A conveying structure suitable for photovoltaic cells, characterized in that: The utility model comprises a lower conveying shaft (1) and an upper conveying shaft (2), wherein the lower conveying shaft (1) is provided with a soft roller group (3), the upper conveying shaft (2) is provided with a floating roller group (4), and a transmission component (5) for mutual transmission is provided between the upper conveying shaft (2) and the lower conveying shaft (1).
2. A transport structure suitable for photovoltaic cells according to claim 1, characterized in that: The soft roller group (3) comprises a plurality of roller sheets (31) sleeved on the lower conveying shaft (1), and limiting rings (32) are arranged on the lower conveying shaft (1) at both ends of the plurality of roller sheets (31).
3. A transport structure suitable for photovoltaic cells according to claim 1, characterized in that: The floating roller group (4) comprises a plurality of floating wheels (41) sleeved on the upper conveying shaft (2), and each of the floating wheels (41) is provided with a positioning sleeve (42) at both axial ends for limiting its own axial movement, and the inner wall diameter of the floating wheel (41) is larger than the outer wall diameter of the upper conveying shaft (2).
4. A transport structure suitable for photovoltaic cells according to claim 3, characterized in that: The positioning sleeve (42) comprises an inner sleeve (43) sleeved on the upper conveying shaft (2), the inner sleeve (43) being provided with a conical elastic portion (44), the inner sleeve (43) being sleeved with a pressing sleeve, and the pressing sleeve (45) being provided with a conical pressing portion (46) for pressing the elastic portion (44).
5. The transport structure for photovoltaic cells according to claim 1, characterized in that: The transmission assembly (5) comprises an upper gear (51) arranged on the upper conveying shaft (2) and a lower gear (52) arranged on the lower conveying shaft (1); the upper gear (51) and the lower gear (52) are meshed with each other for transmission; and the lower conveying shaft (1) is provided with a helical gear (53) for transmission with a driving device.
6. The transport structure for photovoltaic cells according to claim 1, characterized in that: Ceramic bearings (54) are provided at both ends of the upper conveying shaft (2) and the lower conveying shaft (1).