Double-sided coating carrier plate for silicon wafer
Through the improved frame structure and the design of the longitudinal rod and cross rod connectors, the coating uneven problem caused by loose carrier plates is solved, and the stability and consistency of the silicon wafer coating process is achieved.
Patent Information
- Application Number
- CN202422646835.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The existing silicon wafer double-sided coating carrier plates are prone to loosen when the processing accuracy is large, resulting in deformation and twisting of the frame, affecting the consistency of the coating effect.
The frame structure is adopted, including a longitudinal rod and a transverse rod, and the transverse rod is fixed by a first connecting piece and bolt, which increases the torsion resistance of the frame, and a supporting table and support bar are provided on the transverse rod to facilitate the fixation of the carrier plate body, improving assembly accuracy and stability.
It improves the structural stability of the carrier plate, reduces the requirements for processing accuracy, enhances the torsion resistance of the frame, and ensures the position consistency of the silicon wafer during the coating process.
Smart Images
Figure CN223292639U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic panel manufacturing, in particular to a carrier plate used for double-sided coating of silicon wafers. Background Art
[0002] Heterojunction photovoltaic panels are mainly composed of a crystalline silicon substrate and an amorphous silicon thin film. A layer of intrinsic amorphous silicon thin film and a doped amorphous silicon thin film are deposited on the front and back of the crystalline silicon wafer respectively to form a heterojunction structure. This structure can effectively improve the performance of photovoltaic panels.
[0003] During manufacturing, in order to coat both sides of silicon wafers simultaneously, a carrier with a hollow center that can hold the silicon wafers is required. Most existing carriers are frame-type, but their overall torsional resistance is affected by the processing accuracy and the rationality of their structure. When the processing accuracy deviation of parts is large, the frame assembly is prone to not being tight enough. After long-term use, the parts are prone to loosening, and the entire carrier is prone to deformation and twisting, which will cause the height of the carrier in some positions to be inconsistent when coating the silicon wafer, affecting the consistency of the coating effect. Utility Model Content
[0004] The utility model provides a carrier plate for double-sided coating of silicon wafers, which can effectively solve the above problems.
[0005] The utility model is achieved in this way:
[0006] A carrier plate for double-sided coating of a silicon wafer, comprising:
[0007] A frame, the frame consisting of two longitudinal bars and a plurality of transverse bars between the longitudinal bars, wherein a plurality of carrier plates are detachably fixed in the frame, and the carrier plates are arranged between two adjacent transverse bars;
[0008] The cross bar is perpendicular to the longitudinal bar, and both ends of the cross bar are connected to the side surfaces of the longitudinal bar through a first connecting piece. A slot is provided on one side of the first connecting piece, and protrusions are provided at both ends of the cross bar for inserting into the slot. Two first bosses are provided on the other side of the first connecting piece, and the first bosses are inserted into the side surfaces of the longitudinal bar for positioning. The longitudinal bar is fixed to the first connecting piece by a first bolt, and a second bolt passes through the longitudinal bar and the first connecting piece to be fixed to the cross bar.
[0009] Support platforms are provided on both sides of the first connecting member, and the upper end surfaces of the support platforms are in contact with the carrier body, and the two are fixed by bolts.
[0010] As a further improvement, the cross bar is provided with several support bars passing through both sides, and a bolt is passed through the upper end surface of the cross bar to fix the support bar. The upper end surface of the support bar is at the same level as the upper end surface of the support platform, and the carrier body is in contact with the support bar and fixed by bolts.
[0011] As a further improvement, the carrier body consists of a left plate, a middle plate and a right plate, and a connecting rod is provided between the left plate and the middle plate and between the middle plate and the right plate. Both ends of the connecting rod are fixed to the support bar, and both sides of the connecting rod are provided with convex eaves. The carrier body is placed on the upper end surface of the convex eaves and is fixed by a pressure block.
[0012] As a further improvement, the carrier body is provided with a plurality of placement positions for placing silicon wafers, and a plurality of second bosses are provided inside the placement positions.
[0013] As a further improvement, an L-connecting piece is provided on the inner side of the longitudinal rod, and the L-connecting piece is fixed to the carrier plate body by bolts.
[0014] As a further improvement, the slot has a rectangular cross section.
[0015] As a further improvement, the two cross bars located at both ends of the edge of the frame are provided with a collision strip on one side and a push plate on the other side.
[0016] The beneficial effects of the utility model are:
[0017] The structure of the present invention is more stable, and the frame parts are easy to process. A first connecting piece is provided between the cross bar and the longitudinal bar, and the first connecting piece is fixed to the side of the longitudinal bar. The cross bar is inserted into the first connecting piece and fixed by bolts. The frame can withstand a large torsional force, and it is more convenient to assemble the frame, reduce the frame processing accuracy requirements, and improve the processing efficiency of the frame parts; and support platforms are provided on both sides of the first connecting piece, so that the two adjacent carrier plate bodies can be more conveniently fixed on the same plane. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 This is the main view provided by an embodiment of the utility model.
[0020] Figure 2It is a stereogram provided by an embodiment of the present utility model.
[0021] Figure 3 It is a schematic diagram of a local structure provided by an embodiment of the present utility model.
[0022] Figure 4 yes Figure 2 Schematic diagram of the local installation structure at point A in the middle.
[0023] Figure 5 yes Figure 2 Schematic diagram of the local installation structure at point B.
[0024] Reference numerals:
[0025] 1. Frame; 11. Longitudinal bar; 12. Horizontal bar; 121. Protrusion; 2. First connecting piece; 21. Slot; 22. Protrusion; 23. First boss; 3. Carrier body; 31. Left plate; 32. Middle plate; 33. Right plate; 34. Placement position; 4. Push plate; 5. Collision bar; 6. First bolt; 61. Second bolt; 7. L-connector; 8. Connecting rod; 81. Eaves; 9. Support bar; 10. Pressure block. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the present invention.
[0027] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically specified.
[0028] Reference Figure 1-5 As shown, a carrier for double-sided coating of silicon wafers, comprising:
[0029] The frame consists of two longitudinal bars and seven cross bars between the longitudinal bars. Six sets of carrier plates are detachably fixed in the frame, and each set of carrier plates is respectively arranged between two adjacent cross bars;
[0030] The crossbar is perpendicular to the longitudinal bar, and both ends of the crossbar are connected to the side of the longitudinal bar through a first connecting piece. A slot is provided on one side of the first connecting piece, and protrusions for inserting into the slot are provided at both ends of the crossbar. Two first bosses are provided on the other side of the first connecting piece, and the first bosses are inserted into the side of the longitudinal bar for positioning. The longitudinal bar and the first connecting piece are fixed by a first bolt. The first connecting piece is also provided with a through hole penetrating on both sides. The second bolt passes through the longitudinal bar and the first connecting piece and is fixed to the crossbar. When connecting and assembling the crossbar and the longitudinal bar, the first connecting piece is first fixed to the side of the longitudinal bar, and then the crossbar is inserted into the slot and locked by the second bolt.
[0031] Support platforms are provided on both sides of the first connecting member. The upper end surfaces of the support platforms are in contact with the carrier body, and the carrier body and the first connecting member are fixed by bolts.
[0032] It should be noted that: when assembling the frame, since there are multiple cross bars in the frame, if the processed lengths are inconsistent and there are large deviations when connecting them with the longitudinal bars, it is easy to cause the end faces of the cross bars to not fit tightly with the pulled surfaces of the longitudinal bars, affecting the structural strength of the connection, and it may also be inconvenient to install the carrier body. The carrier bodies in the same frame need to be installed on the same plane to ensure the processing consistency of each silicon wafer during coating. To avoid this situation, it is necessary to improve the processing accuracy of components. In the present invention, a first connecting member is provided between the cross bar and the longitudinal bar. The first connecting member is first fixed to the side of the longitudinal bar, and then the cross bar is inserted into the first connecting member and fixed by bolts. The force applied to the carrier during use is mainly the torsional resistance of the frame. When the cross bar is connected, the force surface is concentrated on the side of the protrusion. Even if the end face of the cross bar is not in contact with the first connecting member, since the cross bar is plugged into the first connecting member, it still has a high structural strength and can meet the use requirements. It is more convenient to assemble the frame, reduces processing accuracy, and improves the processing efficiency of frame components.
[0033] Furthermore, support platforms are provided on both sides of the first connecting member, so that two adjacent carrier bodies can be fixed on the same plane more conveniently.
[0034] Furthermore, in order to facilitate the fixing of the carrier body to the frame, each cross bar is provided with eight support bars running through both sides. The specific number can be adjusted according to actual conditions. The upper end surface of the support bar is at the same level as the upper end surface of the support platform. The carrier body is in contact with the support bar, and the two are fixed by bolts when installing the carrier body.
[0035] Furthermore, the carrier body is divided into three plates, namely, a left plate, a middle plate and a right plate, which can reduce the volume of a single component for easy processing and partial replacement. A connecting rod is provided between the left plate and the middle plate and between the middle plate and the right plate. Both ends of the connecting rod are fixed to the support bar. Both sides of the connecting rod are provided with convex eaves. The carrier body is placed on the upper end surface of the convex eaves and fixed by a pressing block, which can enhance the structural strength of the joints of the carrier body.
[0036] Furthermore, to facilitate the placement of silicon wafers, the carrier body is provided with multiple placement positions for silicon wafers, and multiple second bosses are provided inside the placement positions. When the silicon wafer is placed on the placement positions, it is supported by the second bosses inside.
[0037] Furthermore, an L-connecting piece is provided on the inner side of the longitudinal rod, and the L-connecting piece is fixed to the carrier body with bolts, thereby connecting and fixing the carrier body and the longitudinal rod, thereby enhancing the supporting strength of the frame to the carrier body.
[0038] Furthermore, the slot has a rectangular cross section, which makes the slot and the protrusion easy to process and provides good structural strength after assembly.
[0039] Furthermore, the two horizontal bars at both ends of the edge of the frame are provided with a collision bar on one side and a push plate on the other side. Since the front and rear carriers will be arranged and pressed against each other during online transportation, a collision bar is added on one side to protect the frame from damage, and the push plate can be placed on the adjacent carrier.
[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A carrier for double-sided coating of silicon wafers, characterized in that: include: A frame, the frame consisting of two longitudinal bars and a plurality of transverse bars between the longitudinal bars, wherein a plurality of carrier plates are detachably fixed in the frame, and the carrier plates are arranged between two adjacent transverse bars; The cross bar is perpendicular to the longitudinal bar, and both ends of the cross bar are connected to the side surfaces of the longitudinal bar through a first connecting piece. A slot is provided on one side of the first connecting piece, and protrusions are provided at both ends of the cross bar for inserting into the slot. Two first bosses are provided on the other side of the first connecting piece, and the first bosses are inserted into the side surfaces of the longitudinal bar for positioning. The longitudinal bar is fixed to the first connecting piece by a first bolt, and a second bolt passes through the longitudinal bar and the first connecting piece to be fixed to the cross bar. Support platforms are provided on both sides of the first connecting member, and the upper end surfaces of the support platforms are in contact with the carrier body, and the two are fixed by bolts.
2. A carrier for double-sided coating of silicon wafers according to claim 1, characterized in that: The cross bar is provided with several support bars passing through both sides, and a bolt is passed through the upper end surface of the cross bar to fix the support bar. The upper end surface of the support bar is at the same level as the upper end surface of the support platform, and the carrier body is in contact with the support bar and fixed by bolts.
3. The carrier for double-sided coating of silicon wafers according to claim 2, characterized in that: The carrier plate body consists of a left plate, a middle plate and a right plate. A connecting rod is provided between the left plate and the middle plate and between the middle plate and the right plate. Both ends of the connecting rod are fixed to the support bar. Both sides of the connecting rod are provided with convex eaves. The carrier plate body is placed on the upper end surface of the convex eaves and fixed by a pressing block.
4. The carrier for double-sided coating of silicon wafers according to claim 1, characterized in that: The carrier body is provided with a plurality of placement positions for placing silicon wafers, and a plurality of second bosses are provided inside the placement positions.
5. The carrier for double-sided coating of silicon wafers according to claim 1, characterized in that: An L-connecting piece is provided on the inner side of the longitudinal rod, and the L-connecting piece is fixed to the carrier plate body by bolts.
6. The carrier for double-sided coating of silicon wafers according to claim 1, characterized in that: The slot has a rectangular cross section.
7. The carrier for double-sided coating of silicon wafers according to claim 1, characterized in that: The two cross bars located at both ends of the edge of the frame have a collision strip on one side and a push plate on the other side.