Drying oven mesh belt structure for battery silicon wafer

Abstract

The utility model discloses an oven mesh belt structure used for a battery silicon wafer, comprising a mesh belt in driving connection with a driving roller, the mesh belt is provided with a silicon wafer bearing assembly, the silicon wafer bearing assembly comprises a plurality of groups of bearing seats in bilateral symmetry distribution, and the bearing seats are provided with bearing pipes used for placing the silicon wafer. According to the utility model, the contact area between the silicon wafer and the oven mesh belt can be reduced, scratches on the surface of the silicon wafer are reduced, the probability that the silicon wafer is stained with impurities such as dust and aluminum powder on the mesh belt is reduced, and the yield of the silicon wafer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, and particularly relates to an oven mesh belt structure for battery silicon wafers. Background Art

[0002] In the photovoltaic industry, after being cut, the silicon wafers need to go through a cleaning process to remove pollutants such as residual silicon powder, organic matter, and metal ions on the surface. After cleaning, they need to be dried by a drying device before being sent to the next process. Generally, an oven is used to hold the silicon wafers, and hot air is used to dry the silicon wafers.

[0003] In the existing silicon wafer drying process, the silicon wafers are generally transported by a mesh belt in the oven. The silicon wafers lie flat on the mesh belt, and their contact area with the mesh belt is large, which easily causes scratches on the surface of the silicon wafers, increases the probability of the silicon wafers being contaminated with impurities such as dust and aluminum powder on the mesh belt, and affects the yield of the silicon wafers. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an oven mesh belt structure for battery silicon wafers, which can reduce the contact area between the silicon wafers and the oven mesh belt, reduce scratches on the surface of the silicon wafers, reduce the probability of the silicon wafers being contaminated with impurities such as dust and aluminum powder on the mesh belt, and improve the yield of the silicon wafers.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an oven mesh belt structure for battery silicon wafers, including a mesh belt drivingly connected to a driving roller, wherein a silicon wafer supporting assembly is arranged on the mesh belt, and the silicon wafer supporting assembly includes a plurality of groups of supporting seats symmetrically distributed left and right, and a supporting pipe for placing silicon wafers is arranged on the supporting seats.

[0006] A further improvement of the utility model is that the distance between the mutually remote ends of the two supporting pipes in each group is greater than the width of the silicon wafer, and the distance between their mutually close ends is less than the width of the silicon wafer.

[0007] A further improvement of the utility model is that the two supporting pipes are inclined, and the mutually remote end is higher than the mutually close end, and the left and right ends of the silicon wafer are in contact with the two supporting pipes.

[0008] A further improvement of the utility model is that the supporting pipe is rotatably connected to the supporting seat.

[0009] A further improvement of the utility model is that the supporting seat includes a rotating shaft and an L-shaped support welded to the mesh belt. The rotating shaft is inclined, and its two ends are connected to the two side walls of the L-shaped support, and the supporting pipe is rotatably connected to the rotating shaft.

[0010] A further improvement of the present utility model is that perforations and card slots are respectively provided on both side walls of the L-shaped support. One end of the rotating shaft passes through the perforation and is bent and locked, and the other end passes through the card slot and is bent and locked. The rotating shaft is bent and locked at both ends on the L-shaped support.

[0011] A further improvement of the present utility model is that a substrate tube is rotatably connected to the rotating shaft, and the substrate tube is located on the lower side of the receiving tube.

[0012] A further improvement of the present utility model is that the receiving tube is a high-temperature resistant ceramic tube.

[0013] A further improvement of the present utility model is that the receiving tube is a high-temperature resistant silica gel tube.

[0014] The beneficial effects of the present utility model are as follows:

[0015] By arranging a silicon wafer supporting component on the mesh belt, the present utility model can reduce the contact area between the silicon wafer and the oven mesh belt, reduce scratches on the surface of the silicon wafer, reduce the probability of the silicon wafer being contaminated with impurities such as dust and aluminum powder on the mesh belt, and improve the yield of the silicon wafer.

[0016] By arranging an inclined receiving tube, when transporting the silicon wafer, the silicon wafer only contacts the receiving tube at both ends, further reducing the contact area, and thus reducing the risk of scratches on the surface of the silicon wafer.

[0017] The rotating shaft of the present utility model is bent and locked at both ends on the L-shaped support, with stable connection and convenient disassembly. When disassembling, the end of the rotating shaft passing through the card slot can be bent in the reverse direction to release the lock, facilitating the replacement of the receiving tube and improving the maintenance efficiency of the mesh belt.

[0018] Since both ends of the rotating shaft are connected to the side walls of the L-shaped bracket, the distance between both ends of the rotating shaft and the side walls of the L-shaped bracket is relatively small, which will affect the rotation of the receiving tube. By arranging a substrate tube, the lower end of the receiving tube is supported to prevent the lower end of the receiving tube from falling into the small distance, improving the smoothness of the rotation of the receiving tube. Description of the Drawings

[0019] Figure 1 It is a schematic side view of the structure of the silicon wafer supporting component of the present utility model.

[0020] Figure 2 It is a schematic side view of the structure of the L-shaped support of the present utility model.

[0021] Figure 3 It is a schematic side sectional view of the structure of the L-shaped support of the present utility model.

[0022] Figure 4 It is a schematic front view of the structure of the present utility model.

[0023] In the figure, 1 is a driving roller, 2 is a mesh belt, 3 is a supporting seat, 4 is a supporting pipe, 5 is a rotating shaft, 6 is an L-shaped support, 7 is a perforation, 8 is a clamping groove, 9 is a substrate pipe, and 10 is a silicon wafer. Specific Embodiment

[0024] The present utility model will be further illustrated below in conjunction with the accompanying drawings and specific embodiments. Embodiment

[0025] Combined Figures 1 to 4 As can be seen, an oven mesh belt structure for battery silicon wafers includes a mesh belt 2 drivingly connected to a driving roller 1, and a silicon wafer supporting assembly is provided on the mesh belt 2. The silicon wafer supporting assembly includes several groups of supporting seats 3 distributed symmetrically left and right, and a supporting pipe 4 for placing silicon wafers is provided on the supporting seat 3. Every two supporting seats 3 distributed symmetrically left and right form a group, and several groups of supporting seats 3 are evenly spaced along the length direction of the mesh belt 2.

[0026] The distance between the mutually remote ends of the two supporting pipes 4 in each group is greater than the width of the silicon wafer, and the distance between their mutually close ends is less than the width of the silicon wafer. The supporting pipe 4 is rotatably connected to the supporting seat 3.

[0027] The two supporting pipes 4 are inclined, and the mutually remote ends thereof are higher than the mutually close ends, and the left and right ends of the silicon wafer are in contact with the two supporting pipes 4.

[0028] The supporting seat 3 includes a rotating shaft 5 and an L-shaped support 6 welded to the mesh belt 2. The rotating shaft 5 is inclined, and its two ends are connected to the two side walls of the L-shaped support 6, and the supporting pipe 4 is rotatably connected to the rotating shaft 5.

[0029] Perforations 7 and clamping grooves 8 are respectively provided on the two side walls of the L-shaped support 6. One end of the rotating shaft 5 passes through the perforation 7 and is bent and locked, and the other end passes through the clamping groove 8 and is bent and locked. The rotating shaft 5 is bent and locked to the L-shaped support 6 through its two ends. The two ends of the rotating shaft 5 are provided with bending portions. Preferably, the rotating shaft 5 is a metal round shaft and is bendable.

[0030] The L-shaped support 6 includes a horizontal plate and a vertical plate provided at one end of the horizontal plate. The horizontal plate and the vertical plate are integrally formed. The perforation 7 is provided on the vertical plate, and the clamping groove 8 is provided at one end of the horizontal plate.

[0031] A substrate pipe 9 is rotatably connected to the rotating shaft 5, and the substrate pipe 9 is located on the lower side of the supporting pipe 4. The length of the supporting pipe 4 is shorter than the length of the rotating shaft 5. When the supporting pipe 4 is installed on the rotating shaft 5, it slides down on the rotating shaft 5 by gravity, and its lower end face is in contact with the substrate pipe 9, and its higher end is spaced from the vertical plate. The two ends of the supporting pipe 4 are not restricted by the distance between the rotating shaft and the L-shaped support and can rotate freely.

[0032] Preferably, the distance between the upper end of the carrier tube 4 and the horizontal plate is greater than 5 mm to facilitate its rotation.

[0033] Preferably, the carrier tube 4 is a high-temperature resistant ceramic tube or a high-temperature resistant silica gel tube. When using a high-temperature resistant silica gel tube, soft contact between the silicon wafer and the carrier tube can be achieved, reducing damage to the two sides of the silicon wafer in contact with the carrier tube and improving the yield of cell processing.

[0034] Preferably, the diameter of the substrate tube 9 is the same as that of the carrier tube 4, and the substrate tube 9 is a metal tube.

[0035] The working principle of an oven mesh belt structure for battery silicon wafers provided by the utility model is as follows: During use, place the silicon wafer on the carrier seats 3 symmetrically arranged on the mesh belt 2. The two ends of the silicon wafer are in contact with the carrier tubes 4 of multiple groups of carrier seats 3, and the silicon wafer is supported by the carrier tubes 4 to reduce its contact with the mesh belt 2.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the 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. Any equivalent structural or equivalent process transformation made using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A mesh belt structure for a baking oven for solar cell silicon wafers, comprising a mesh belt (2) drivingly connected to a driving roller (1), characterized in that: The mesh belt (2) is provided with a silicon wafer supporting assembly, the silicon wafer supporting assembly comprises a plurality of groups of supporting seats (3) symmetrically distributed on the left and right, a supporting tube (4) for placing silicon wafers is provided on the supporting seat (3), the supporting tube (4) is rotatably connected to the supporting seat (3), the supporting seat (3) comprises a rotating shaft (5) and an L-shaped support (6) welded to the mesh belt (2), the rotating shaft (5) is inclined, and its two ends are connected to the two side walls of the L-shaped support (6), the supporting tube (4) is rotatably connected to the rotating shaft (5), the two side walls of the L-shaped support (6) are respectively provided with a through hole (7) and a clamping groove (8), one end of the rotating shaft (5) passes through the through hole (7) and is bent and locked, and the other end passes through the clamping groove (8) and is bent and locked, and the rotating shaft (5) is locked to the L-shaped support (6) by bending at its two ends.

2. The oven mesh belt structure for battery silicon wafers according to claim 1, characterized in that: The distance between the ends of the two supporting tubes (4) in each group that are far away from each other is greater than the width of the silicon wafer, and the distance between the ends that are close to each other is less than the width of the silicon wafer.

3. The oven mesh belt structure for battery silicon wafers according to claim 2 is characterized in that: The two supporting tubes (4) are arranged in an inclined manner, and the ends thereof that are far away from each other are higher than the ends thereof that are close to each other. The left and right ends of the silicon wafer are in contact with the two supporting tubes (4).

4. The oven mesh belt structure for battery silicon wafers according to claim 1, characterized in that: A substrate tube (9) is rotatably connected to the rotating shaft (5), and the substrate tube (9) is located at the lower side of the supporting tube (4).

5. The oven mesh belt structure for battery silicon wafers according to claim 1, characterized in that: The bearing tube (4) is a high temperature resistant ceramic tube.

6. The oven mesh belt structure for battery silicon wafers according to claim 1, characterized in that: The supporting tube (4) is a high temperature resistant silicone tube.

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