Commodity shelf

Abstract

The utility model belongs to the technical field of solar cell production, and provides a commodity shelf which comprises a cover plate, a bottom plate, a supporting rod and a balance weight piece, the supporting rod is arranged between the cover plate and the bottom plate, and the balance weight piece is located on the bottom plate so as to lower the gravity center of the commodity shelf. According to the commodity shelf, due to the fact that the commodity shelf has the low gravity center, the probability that the commodity shelf topples over in the process of transferring and carrying silicon wafers is reduced to a large extent, the commodity shelf has good stability in the process of conveying goods (such as the silicon wafers), and then the shutdown rate of a production line caused by the fact that the commodity shelf topples over is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell production, in particular to a storage rack. Background Art

[0002] During normal solar cell production, silicon wafers are placed in baskets for transport between processes. These baskets serve as carriers for the silicon wafers used in solar cell production. They are transported by belts to the machines. For example, during texturing, the baskets carry the silicon wafers through the chemical treatment process. Once texturing is complete, the baskets carry the wafers to the CVD process via AGVs.

[0003] Currently, baskets are typically rectangular, loaded with silicon wafers horizontally from the side. This rectangular design facilitates loading more wafers and improves production efficiency. A basket typically holds around 100 wafers. The wafers are transported upright in the basket. This upright position can cause jitter and uneven speed (such as deceleration or acceleration) during transportation, which can often cause the basket to tip over. However, when the basket tips over, the wafers inside can fall and shatter, resulting in fragment loss. Furthermore, handling the tipped basket requires downtime, which in turn impacts the overall machine uptime.

[0004] Therefore, it is necessary to provide a storage rack for placing silicon wafers without tipping over. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] The rack of this utility model lowers its center of gravity by providing a counterweight within the rack. Specifically, during the solar cell production process, the rack's lower center of gravity significantly reduces the probability of it tipping over during the transfer of silicon wafers, thereby reducing the rate of production line downtime caused by the rack toppling.

[0007] The rack of this utility model lowers its center of gravity by providing a counterweight within the rack, thereby improving its stability during the transport of silicon wafers. Specifically, during the solar cell production process, the rack's lower center of gravity significantly reduces the probability of it tipping over during the transfer of silicon wafers. This provides the rack with greater stability during the transport of goods (such as silicon wafers), thereby reducing the rate of production line downtime caused by rack tipping.

[0008] According to an embodiment of the present invention, the counterweight is a metal rod, one end of which is connected to the base plate. The length of the metal rod is h1, and the length of the support rod is h2. The lengths of the metal rod h1 and h2 satisfy the following relationship: 0.3 ≤ h1 / h2 ≤ 0.6. This further lowers the center of gravity of the shelf and improves its operational stability.

[0009] According to an embodiment of the present invention, the metal rod is embedded in the support rod.

[0010] According to an embodiment of the present invention, the counterweight is a metal block, and the bottom plate is connected to the metal block.

[0011] According to an embodiment of the present invention, a surface of the bottom plate on one side away from the cover plate has a groove, the metal block is located in the groove, and the connection between the bottom plate and the metal block includes a threaded connection or a lock connection.

[0012] According to an embodiment of the present invention, the connection is a sliding connection having the following structure: the base plate has a first slide rail, the metal block has a second slide rail that matches the first slide rail, and the metal block is slidably connected to the base plate via the first and second slide rails. This allows for free removal and installation of the metal block, particularly when the shelf is unused and needs to be laid flat.

[0013] According to an embodiment of the present invention, the counterweight is a magnetic member, the magnetic member is located on a side surface of the bottom plate away from the cover plate, and the bottom plate is connected to the magnetic member.

[0014] According to an embodiment of the present invention, a surface of the bottom plate on one side away from the cover plate has a groove, and the magnetic member is located in the groove.

[0015] According to an embodiment of the present invention, the connection between the base plate and the magnetic member includes a threaded connection or a lock connection.

[0016] According to an embodiment of the present utility model, the connection is a sliding connection, and the sliding connection has the following structure: the base plate has a first slide rail, the magnetic part has a second slide rail matching the first slide rail, and the magnetic part is slidingly connected to the base plate through the first slide rail and the second slide rail.

[0017] According to an embodiment of the present invention, the cover plate, the bottom plate, the support rod and the counterweight are integrally formed.

[0018] According to an embodiment of the present invention, the support rod and the counterweight are integrally formed.

[0019] According to an embodiment of the present invention, the bottom plate and the counterweight are integrally formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 Schematic diagram of the storage rack structure in some embodiments;

[0022] Figure 2 Schematic diagram of the storage rack structure in some embodiments;

[0023] Figure 3 Schematic diagram of the storage rack structure in some embodiments;

[0024] Figure 4 Schematic diagram of the storage rack structure in some embodiments;

[0025] Figure 5 Schematic diagram of the storage rack structure in some embodiments;

[0026] Figure 6 Schematic diagram of the storage rack structure of comparative example 1.

[0027] Description of reference numerals:

[0028] 1: Cover plate; 2: Base plate; 3: Support frame; 4: Metal rod; 5: Metal block; 6: First slide rail; 7: Second slide rail. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0030] To improve handling efficiency during solar cell production and allow baskets to hold more silicon wafers, baskets are typically designed in the shape of rectangular blocks based on the shape of the wafers. These baskets are typically moved vertically and horizontally, with their center of gravity at the center. During transmission, vibrations, accelerations, and decelerations are common. A high center of gravity can easily cause the basket to tip over. Therefore, while maintaining its shape, it's necessary to lower its center of gravity or hold it with a force to prevent it from tipping over during movement.

[0031] The utility model provides a storage rack, which includes a cover plate, a bottom plate, a support rod and a counterweight. The support rod is arranged between the cover plate and the bottom plate, wherein the counterweight is located on the floor to lower the center of gravity of the storage rack.

[0032] The rack of this utility model lowers its center of gravity by providing a counterweight within the rack, thereby improving its operational stability when transporting objects (such as silicon wafers). Specifically, during the production of solar cells, the rack's lower center of gravity significantly reduces the probability of it tipping over during the transfer of silicon wafers. This results in better operational stability and a lower risk of tipping over during the transport of goods (such as silicon wafers), thereby reducing production line downtime and the resulting loss of silicon wafers due to rack tipping.

[0033] In some embodiments, reference Figure 1 The rack is a basket for transferring silicon wafers in the production process of solar cells. The basket comprises a support rod 3, a bottom plate 2 and a cover plate 1, wherein the support rod 3 is arranged between the bottom plate 2 and the cover plate 1.

[0034] In some embodiments, reference Figure 1 The counterweight is a metal rod 4, one end of which is connected to the bottom plate 2. Thus, the metal rod is arranged on the bottom plate of the rack, which can lower the center of gravity of the rack as a whole.

[0035] Further, refer to Figure 1 The length of metal rod 4 is h1, the length of support rod 3 is h2, and the relationship between the length of metal rod 4 h1 and the length of support rod 3 h2 satisfies the following relationship: 0.3 ≤ h1 / h2 ≤ 0.6. This significantly lowers the center of gravity of the rack, thereby improving the rack's stability during wafer handling.

[0036] In some embodiments, the metal rod can be fixed to the support rod to lower the center of gravity of the storage rack.

[0037] It should be noted that the objects in contact with the silicon wafer need to be insulated. When the metal rod is fixed on the support rod, the surface of the metal rod can be wrapped with insulating material.

[0038] In other embodiments, the metal rod is embedded in the support rod, so that the metal rod can be used as a part of the support rod, saving the manufacturing cost of the storage rack.

[0039] In some embodiments, the counterweight is a metal block, and the bottom plate is connected to the metal block.

[0040] In some embodiments, reference Figure 2 The bottom plate 2 has a groove on one side of the surface away from the cover plate 1 , and the metal block 6 is located in the groove.

[0041] Furthermore, the connection mode between the metal block and the base plate includes a threaded connection or a lock link, which makes it easy to disassemble and repair the metal block.

[0042] In some embodiments, reference Figure 3 The connection between the bottom plate 2 and the metal block 5 is a sliding connection, and the sliding connection has the following structure: the bottom plate 2 has a first slide rail 6, and the metal block 5 has a second slide rail 7 that matches the first slide rail 6. The metal block 5 is slidably connected to the bottom plate 2 through the first slide rail 6 and the second slide rail 7. Figure 4 , a schematic diagram of the rack after the metal block 5 is slidably connected to the bottom plate 2. This not only lowers the center of gravity of the rack, but also allows this part to be removed when the rack needs to be laid flat, and the metal block part to be installed when the rack is needed to transport solar cells.

[0043] In some embodiments, the counterweight is a magnetic member located on a side of the bottom plate away from the cover plate, and the bottom plate is connected to the magnetic member. Thus, the magnetic member can interact with magnetic objects on the ground through magnetic force, thereby ensuring a more secure contact between the bottom plate of the rack and the ground, thereby preventing the rack from tipping over during operation.

[0044] In some embodiments, the bottom plate has a groove on a side facing away from the cover plate, and the magnetic member is positioned within the groove. The connection between the bottom plate and the magnetic member includes a threaded connection or a snap-on connection. This facilitates removal of the magnetic member and allows for replacement for maintenance. Furthermore, the magnetic member can be removed when the magnetic attraction is no longer needed to stabilize the shelf.

[0045] In some embodiments, the base plate and the magnetic member are connected by a sliding connection, wherein the sliding connection has the following structure: the base plate has a first slide rail, the magnetic member has a second slide rail that matches the first slide rail, and the magnetic member is slidably connected to the base plate via the first and second slide rails. This not only lowers the center of gravity of the shelf, but also allows this portion to be removed when the shelf needs to be laid flat, and the metal block portion to be installed when the shelf is needed to transport solar cells.

[0046] It is understandable that when the counterweight is a magnetic member, the size of the magnetic member can be calculated based on the sum of the weight of the rack itself and the weight of the object being transported.

[0047] In some embodiments, reference Figure 5 The rack includes a cover plate 1, a bottom plate 2, support rods 3, and a counterweight, which is a combination of a metal rod 4 and a metal block 5. The center of gravity of the rack can be further lowered, thereby improving the stability of the operation during the wafer handling process.

[0048] It is understood that the rack of the present invention lowers the center of gravity of the rack by providing a counterweight, which can be a combination of a metal rod, a metal block, and a magnetic member, or a combination of one or two of these.

[0049] In some embodiments, the cover plate, the bottom plate, the support rod and the counterweight can be integrally formed, which can save manufacturing costs and lower the center of gravity of the storage rack.

[0050] In some embodiments, the support rod and the counterweight are integrally formed. The counterweight in this embodiment is a metal rod. Specifically, during the process of forming the support rod, the metal rod and the support rod are formed as a whole.

[0051] In some embodiments, the base plate, the support rods, and the counterweight are integrally formed. The counterweight in this embodiment is a metal block. Specifically, integrally formed means that the metal block and the base plate are formed as a single unit. As a specific example, a metal block is first obtained, and then a metal block-wrapped base plate is formed on the surface of the metal block by wrapping the metal block.

[0052] It can be understood that the integral molding in the present invention refers to being connected as a whole during the manufacturing process.

[0053] The solutions of the present invention are described below through specific examples. It should be noted that the following examples are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention.

[0054] Example 1

[0055] Flower basket structure design Figure 1 The flower basket has four support rods 3, a base plate 2 and a cover plate 1, wherein the support rod 3 is arranged between the base plate 2 and the cover plate 1, the counterweight is a metal rod 4, one end of the metal rod 4 is connected to the base plate 2, the length of the metal rod 4 is h1, the length of the support rod 3 is h2, and the relationship between the length of the metal rod 4 h1 and the length of the support rod 3 h2 is h1 / h2=0.5.

[0056] Example 2

[0057] Flower basket design Figure 2 The bottom plate 2 has a groove on one side of the surface away from the cover plate 1, and the metal block 6 is located in the groove.

[0058] Example 3

[0059] Flower basket design Figure 3The connection between the base plate 2 and the metal block 5 is a sliding connection, and the sliding connection has the following structure: the base plate 2 has a first slide rail 6, and the metal block 5 has a second slide rail 7 matching the first slide rail 6. The metal block 5 is slidably connected to the base plate 2 through the first slide rail 6 and the second slide rail 7.

[0060] Example 4

[0061] The structure of the flower basket is designed as follows:

[0062] The flower basket's counterweight is a magnetic piece. The bottom plate has a groove on the side away from the cover plate, and the magnetic piece is located in the groove. The total weight of the flower basket is 5kg, the total mass of the silicon wafer is 0.67kg, and the dimensions of the magnetic piece are 262×149×42cm. 3 . Magnet density 7.5g / cm 3 Much larger than the density of PVDF flower basket material 1.75-1.83g / cm 3 , gravity itself moves downward, and the magnetic force of the magnet is required to be ≥0N as an auxiliary.

[0063] Comparative Example 1

[0064] Flower baskets of existing structures, such as Figure 6 Shown without counterweight.

[0065] The above-designed flower basket was put into actual production for one month, and the dumping status of the flower basket from CVD unloading to PVD loading was counted. The results are shown in Table 1.

[0066] Table 1

[0067]

[0068] From the above data, it can be seen that the probability of the flower baskets of Examples 1-4 tipping over during the transportation of silicon wafers is greatly reduced compared with that of Comparative Example 1.

[0069] Each time the basket is dumped, almost all the silicon wafers are shattered. Therefore, the optimized basket structure can reduce the number of broken wafers by 27,000 per year, significantly saving the cost of solar cell production. If the processing time for each basket dump is calculated as 15 minutes, the optimized basket structure can reduce the abnormal processing time by 4,860 minutes.

[0070] Unless otherwise specified, all technical and scientific terms used in this utility model have the same meanings as commonly understood by those skilled in the art to which this utility model belongs. All patents and publications related to this utility model are incorporated herein by reference in their entirety. The terms "comprising" or "including" are open-ended expressions, meaning that they include the contents specified in this utility model but do not exclude other contents.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "another embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are mutually inconsistent. In addition, it should be noted that in this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0072] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A storage rack, characterized in that: It includes a cover plate, a bottom plate, a support rod and a counterweight, wherein the support rod is arranged between the cover plate and the bottom plate. Wherein, the counterweight is located on the bottom plate to lower the center of gravity of the storage rack; The cover plate, the bottom plate, the support rod and the counterweight are integrally formed; And / or, the support rod and the counterweight are integrally formed; And / or, the base plate and the counterweight are integrally formed.

2. The storage rack according to claim 1, wherein: The counterweight is a metal rod, one end of which is connected to the base plate. The length of the metal rod is h1, the length of the support rod is h2, and the length of the metal rod h1 and the length of the support rod h2 satisfy the following: 0.3≤h1 / h2≤0.

6.

3. The storage rack according to claim 2, characterized in that: The metal rod is embedded in the support rod.

4. The storage rack according to claim 1, wherein: The counterweight is a metal block, and the bottom plate is connected to the metal block.

5. The storage rack according to claim 4, characterized in that: A groove is formed on a surface of one side of the bottom plate away from the cover plate, and the metal block is located in the groove. The connection between the bottom plate and the metal block includes a threaded connection or a lock connection.

6. The storage rack according to claim 4, characterized in that: The connection is a sliding connection, and the sliding connection has the following structure: The bottom plate has a first slide rail, the metal block has a second slide rail matching the first slide rail, and the metal block is slidably connected to the bottom plate via the first slide rail and the second slide rail.

7. The storage rack according to claim 1, characterized in that: The counterweight is a magnetic component, the magnetic component is located on a side surface of the bottom plate away from the cover plate, and the bottom plate is connected to the magnetic component.

8. The storage rack according to claim 7, characterized in that: A groove is formed on a surface of the bottom plate on one side away from the cover plate, and the magnetic member is located in the groove; And / or, the connection between the base plate and the magnetic member includes a threaded connection or a lock connection.

9. The storage rack according to claim 7, characterized in that: The connection is a sliding connection; The sliding connection has the following structure: The bottom plate has a first slide rail, the magnetic component has a second slide rail matching the first slide rail, and the magnetic component is slidably connected to the bottom plate through the first slide rail and the second slide rail.

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