A sintering furnace for photovoltaic cell manufacturing

Abstract

The utility model relates to photovoltaic cell manufacturing technical field, especially a sintering furnace for photovoltaic cell manufacturing, including bottom plate, the top of bottom plate installs the combustion frame, and the sidewall of combustion frame both ends all is seted up rectangular through -hole, the top of bottom plate all installs the mounting bracket, and the top of mounting bracket installs the fixed crosspiece that penetrates rectangular through -hole, the sidewall of fixed crosspiece installs the rotary disc, and the inside rotation of rotary disc is equipped with conveying roller assembly through bearing, the sidewall of fixed crosspiece one side installs drive assembly, and the output of drive assembly is connected with conveying roller assembly one end fixedly. The utility model first through two groups of mounting blocks to opposite direction sliding to adjust the distance between two sets of limit plate, to pass through two sets of limit plate to the photovoltaic cell in the conveying of conveying roller assembly is positioned, to avoid the photovoltaic cell when conveying into the inside of bottom plate and occur to shake and dump.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell manufacturing technology, and in particular to a sintering furnace for manufacturing photovoltaic cells. Background Technology

[0002] A photovoltaic (PV) cell is a device that directly converts solar energy into electrical energy. Its core principle is the photoelectric effect of semiconductor materials. When sunlight shines on the surface of the cell, photons interact with electrons in the semiconductor material to generate electron-hole pairs, thereby forming an electric current. PV cells have a wide range of applications, from residential rooftop power generation to large-scale photovoltaic power plants, all of which are driving the development of clean energy. The PV cell sintering furnace is a key piece of equipment used in the production of solar cells. It is mainly used for high-temperature treatment of the positive and negative electrodes after screen printing, enabling the metal to form ohmic contact with the silicon wafer, while simultaneously promoting hydrogen atom diffusion passivation and improving the cell conversion efficiency.

[0003] Current sintering furnaces for photovoltaic cell manufacturing lack limiting mechanisms during the sintering process. This can easily cause the photovoltaic cells to shake or tip over when entering the furnace via the conveyor, affecting the sintering effect. Furthermore, existing sintering furnaces lack unloading structures, making automatic unloading impossible. Therefore, a new type of sintering furnace for photovoltaic cell manufacturing is needed to meet these requirements. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Given that the existing sintering furnaces for photovoltaic cell manufacturing, as described above or in the prior art, lack a limiting mechanism during the sintering of photovoltaic cells, the photovoltaic cells are prone to shaking or tipping when entering the sintering furnace via the conveying mechanism, thus affecting the sintering effect. Furthermore, existing sintering furnaces for photovoltaic cell manufacturing lack a discharge structure, making automatic unloading impossible. Therefore, a new type of sintering furnace for photovoltaic cell manufacturing is needed to meet these user requirements.

[0006] Therefore, the purpose of this invention is to provide a sintering furnace for manufacturing photovoltaic cells.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sintering furnace for photovoltaic cell manufacturing, including a base plate, a combustion frame installed at the top of the base plate, and rectangular through holes opened on the side walls at both ends of the combustion frame, a mounting frame installed at the top of the base plate, and a fixed crossbar through the rectangular through hole installed at the top of the mounting frame, a rotating disk installed on the side wall of the fixed crossbar, and a conveying roller assembly rotatably mounted inside the rotating disk via bearings, a driving assembly installed on one side wall of the fixed crossbar, and the output end of the driving assembly fixedly connected to one end of the conveying roller assembly, a limit adjustment mechanism installed at the top of the base plate, a second U-shaped frame installed at the top of the base plate, and a unloading mechanism installed at the top of the base plate.

[0008] As a preferred embodiment of the sintering furnace for manufacturing photovoltaic cells according to this utility model, wherein: a heating frame is installed at the top of each inside the combustion frame, and a heating tube is installed at the top of each inside the heating frame.

[0009] By adopting the above technical solution, this solution simultaneously activates multiple sets of heating tubes, thereby using the heating of multiple sets of heating tubes to sinter the photovoltaic cells above the conveyor roller assembly.

[0010] As a preferred embodiment of the sintering furnace for photovoltaic cell manufacturing according to this utility model, the limiting adjustment mechanism includes a first U-shaped frame, which is fixedly installed on the top of the base plate. A first sliding groove is provided at the top of the first U-shaped frame, and a first slider is provided inside the first sliding groove. A limiting plate is installed at the top of each slider, and a threaded hole body is provided inside the limiting plate. A positive and negative threaded rod body is threadedly connected inside the threaded hole body, and one end of the positive and negative threaded rod body is rotatably connected to the side wall of the first U-shaped frame through a bearing.

[0011] By adopting the above technical solution, this solution connects the main body of the positive and negative threaded rod with the main body of the threaded hole through a threaded connection, thereby causing the main body of the positive and negative threaded rod to rotate and drive the two sets of limiting plates to slide in opposite directions on the outer wall of the main body of the positive and negative threaded rod.

[0012] As a preferred embodiment of the sintering furnace for manufacturing photovoltaic cells according to this utility model, the top end of the second U-shaped frame is provided with a second sliding groove, and the interior of the second sliding groove is provided with a second slider, the top end of the second slider being fixedly connected to the bottom end of the limiting plate.

[0013] By adopting the above technical solution, the two sets of limiting plates can drive the second slider to slide simultaneously inside the second slide groove through the cooperation of the second slide groove and the second slide block.

[0014] As a preferred embodiment of the sintering furnace for photovoltaic cell manufacturing according to this utility model, the unloading mechanism includes a mounting base and a second rectangular groove. The mounting base is fixedly installed on the top of the base plate, and an unloading plate is hinged inside the mounting base. The second rectangular groove is opened at the top of the base plate, and a mounting block is provided inside the second rectangular groove. A hinge plate is hinged to the top of the mounting block, and the top of the hinge plate is hinged to the bottom of the unloading plate.

[0015] By adopting the above technical solution, the cooperation between the second rectangular groove and the mounting block allows the unloading plate to rotate, which in turn drives the hinge plate to rotate and causes the mounting block to slide inside the second rectangular groove.

[0016] As a preferred embodiment of the sintering furnace for manufacturing photovoltaic cells according to this utility model, the bottom end of the unloading plate is provided with a first rectangular groove, the inside of the first rectangular groove is provided with a third sliding groove, and the inner wall of the third sliding groove is provided with a third slider. The end of the third slider away from the third sliding groove is provided with a connecting block, and the bottom end of the connecting block is provided with a hinge seat.

[0017] By adopting the above technical solution, the cooperation between the third slide groove and the third slider enables the hydraulic rod to lift and lower, thereby driving the connecting block and the third slider to slide inside the third slide groove.

[0018] In a preferred embodiment of the sintering furnace for manufacturing photovoltaic cells according to this utility model, a hydraulic rod is hinged to the top of the bottom plate, and the top of the hydraulic rod is hinged to the interior of the hinge seat.

[0019] By adopting the above technical solution, the hydraulic rod can be raised and lowered, and the unloading plate can be rotated inside the mounting base.

[0020] In a preferred embodiment of the sintering furnace for manufacturing photovoltaic cells according to this utility model, the conveying roller assembly consists of multiple sets of identical structures, and the multiple sets of conveying roller assemblies are connected by chain and sprocket meshing.

[0021] By adopting the above technical solution, multiple sets of conveyor roller assemblies are connected by chain and sprocket meshing, thereby driving the multiple sets of conveyor roller assemblies to rotate simultaneously by starting the drive assembly.

[0022] The sintering furnace for manufacturing photovoltaic cells according to this utility model has the following beneficial effects: This invention firstly rotates the main body of the positive and negative threaded rod, which is threadedly connected to the main body of the threaded hole. Through the cooperation of the first sliding groove and the first slider, the rotation of the main body of the positive and negative threaded rod drives two sets of limiting plates to slide in opposite directions on the outer wall of the main body of the positive and negative threaded rod via the first slider and the first sliding groove. This allows the two sets of mounting blocks to slide in opposite directions to adjust the distance between the two sets of limiting plates. In this way, the two sets of limiting plates limit the photovoltaic cells when they are transported through the conveying roller assembly, thereby preventing the photovoltaic cells from shaking and tipping over when they are transported into the base plate.

[0023] This invention firstly involves raising and lowering a hydraulic rod, which is hinged to the mounting block and the unloading plate via a hinge plate. The hydraulic rod is also hinged to the hinge seat. Raising and lowering the hydraulic rod causes the third slider to slide inside the connecting block, which in turn causes the unloading plate to rotate inside the mounting seat. This rotation of the unloading plate then causes the hinge plate and the mounting block to slide inside the second rectangular groove. By raising and lowering the hydraulic rod, the angle of the unloading plate can be adjusted, thus enabling automatic unloading of materials from the conveyor roller assembly during transport. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of 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. Among them: Figure 1 This is a schematic diagram of the main structure of a sintering furnace for manufacturing photovoltaic cells. Figure 2 This is a schematic diagram of the internal structure of a sintering furnace used for manufacturing photovoltaic cells. Figure 3 A schematic diagram of the disassembly structure of the limit adjustment mechanism of a sintering furnace for manufacturing photovoltaic cells; Figure 4 This is a schematic diagram of the unloading mechanism of a sintering furnace for manufacturing photovoltaic cells; Figure 5 This is a schematic diagram of the internal structure of the unloading mechanism of a sintering furnace for manufacturing photovoltaic cells.

[0025] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. Combustion frame; 201. Rectangular through hole; 202. Heating frame; 203. Heating tube; 3. Mounting bracket; 301. Fixed crossbar; 302. Rotary disk; 303. Conveying roller assembly; 304. Drive assembly; 4. Limit adjustment mechanism; 401. First U-shaped frame; 402. First chute; 403. First slider; 404. Limiting plate; 405. Threaded hole body; 406. Positive and negative threaded rod body; 5. Second U-shaped frame; 501. Second chute; 502. Second slider; 6. Unloading mechanism; 601. Mounting seat; 602. Unloading plate; 6021. First rectangular groove; 6022. Third chute; 6023. Third slider; 6024. Connecting block; 6025. Hinge seat; 603. Second rectangular groove; 604. Mounting block; 605. Hinge plate; 606. Hydraulic rod. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Example 1: Refer to Figures 1-5This is the first embodiment of the present invention, which provides a sintering furnace for photovoltaic cell manufacturing. It addresses the problem that current photovoltaic cell sintering furnaces lack a limiting mechanism during sintering, making it prone to shaking or tipping of the photovoltaic cells as they enter the furnace via the conveying mechanism, thus affecting the sintering effect. Furthermore, existing photovoltaic cell sintering furnaces lack a discharge structure, hindering automatic discharge. The new furnace includes a base plate 1, with a combustion frame 2 mounted on its top. Rectangular through holes 201 are provided on the side walls at both ends of the combustion frame 2. Mounting brackets 3 are mounted on the top of the base plate 1, with through rectangular holes at their tops. The fixed crossbeam 301 of 201 has a rotating disk 302 installed on its side wall, and a conveying roller assembly 303 is rotatably installed inside the rotating disk 302 via bearings. A drive assembly 304 is installed on one side wall of the fixed crossbeam 301, and the output end of the drive assembly 304 is fixedly connected to one end of the conveying roller assembly 303. A limit adjustment mechanism 4 is installed on the top of the base plate 1, a second U-shaped frame 5 is installed on the top of the base plate 1, and a discharge mechanism 6 is installed on the top of the base plate 1. A heating frame 202 is installed on the top of the inside of the combustion frame 2, and a heating tube 203 is installed on the top of the inside of the heating frame 202. There are multiple sets of conveying roller assemblies 303 with the same structure, and the multiple sets of conveying roller assemblies 303 are connected by chain and sprocket meshing.

[0030] Combination Figure 1 , Figure 2 and Figure 3 In an embodiment of this utility model, the limiting adjustment mechanism 4 includes a first U-shaped frame 401, which is fixedly installed on the top of the base plate 1. A first sliding groove 402 is provided on the top of the first U-shaped frame 401, and a first slider 403 is provided inside the first sliding groove 402. A limiting plate 404 is installed on the top of each slider 403, and a threaded hole body 405 is provided inside the limiting plate 404. A positive and negative threaded rod body 406 is threadedly connected inside the threaded hole body 405. One end of the positive and negative threaded rod body 406 is rotatably connected to the side wall of the first U-shaped frame 401 through a bearing. By connecting the positive and negative threaded rod body 406 to the threaded hole body 405, the positive and negative threaded rod body 406 can be rotated to drive the two sets of limiting plates 404 to slide in opposite directions on the outer wall of the positive and negative threaded rod body 406.

[0031] Combination Figure 1 , Figure 2 and Figure 3In this embodiment of the present invention, a second sliding groove 501 is provided at the top of the second U-shaped frame 5, and a second slider 502 is provided inside the second sliding groove 501. The top of the second slider 502 is fixedly connected to the bottom of the limiting plate 404. Through the mutual cooperation of the second sliding groove 501 and the second slider 502, the two sets of limiting plates 404 can drive the second slider 502 to slide simultaneously inside the second sliding groove 501.

[0032] The specific working principle is as follows: When it is necessary to limit the sintering of photovoltaic cells, the photovoltaic cells are first placed above the conveying roller assembly 303. Then, by rotating the main body 406 of the positive and negative threaded rods, and through the threaded connection between the main body 406 of the positive and negative threaded rods and the threaded hole body 405, and through the mutual cooperation of the first sliding groove 402 and the first sliding block 403, the main body 406 of the positive and negative threaded rods rotates, thereby driving the two sets of limiting plates 404 to move in opposite directions on the outer wall of the main body 406 of the positive and negative threaded rods through the first sliding block 403 and the first sliding groove 402. The sliding mechanism allows the two sets of mounting blocks 604 to slide in opposite directions to adjust the distance between the two sets of limiting plates 404. This, in turn, limits the photovoltaic cells as they are conveyed through the conveying roller assembly 303, preventing them from shaking or tipping over when they enter the base plate 1. Furthermore, the multiple sets of conveying roller assemblies 303 are connected by a chain and sprocket, allowing the drive assembly 304 to rotate them simultaneously to convey the photovoltaic cells.

[0033] Example 2: Refer to Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a sintering furnace for photovoltaic cell manufacturing. It can solve the problem that current photovoltaic cell manufacturing sintering furnaces do not have a limiting mechanism when sintering photovoltaic cells. This can easily cause the photovoltaic cells to shake or tip over when entering the sintering furnace through the conveying mechanism, thus affecting the sintering effect of the photovoltaic cells. At the same time, existing photovoltaic cell manufacturing sintering furnaces do not have a discharge structure, thus failing to automatically discharge the photovoltaic cell manufacturing sintering furnace. The discharge mechanism 6 includes a mounting base 601 and a second rectangular groove 603. The mounting base 601 is fixedly installed on the top of the base plate 1. A discharge plate 602 is hinged inside the mounting base 601. The second rectangular groove 603 is opened at the top of the base plate 1. A mounting block 604 is provided inside the second rectangular groove 603. A hinge plate 605 is hinged to the top of the mounting block 604. The top of the hinge plate 605 is hinged to the bottom of the discharge plate 602.

[0034] Combination Figure 3 , Figure 4 and Figure 5In an embodiment of this utility model, a first rectangular groove 6021 is provided at the bottom end of the unloading plate 602. A third sliding groove 6022 is installed inside the first rectangular groove 6021, and a third slider 6023 is provided on the inner wall of the third sliding groove 6022. A connecting block 6024 is installed at the end of the third slider 6023 away from the third sliding groove 6022, and a hinge seat 6025 is installed at the bottom end of the connecting block 6024. A hydraulic rod 606 is hinged to the top end of the base plate 1, and the top end of the hydraulic rod 606 is hinged to the inside of the hinge seat 6025. Through the mutual cooperation of the third sliding groove 6022 and the third slider 6023, the lifting and lowering of the hydraulic rod 606 can drive the connecting block 6024 and the third slider 6023 to slide inside the third sliding groove 6022.

[0035] The specific working principle is as follows: when it is necessary to unload the sintered photovoltaic cells, the hydraulic rod 606 is first raised and lowered, and is hinged to the mounting block 604 and the unloading plate 602 respectively through the hinge plate 605. The hydraulic rod 606 is also hinged to the hinge seat 6025. The raising and lowering of the hydraulic rod 606 drives the third slider 6023 to slide inside the connecting block 6024. This causes the hydraulic rod 606 to rise and fall, which in turn drives the unloading plate 602 to rotate inside the mounting seat 601. The rotation of the unloading plate 602 drives the hinge plate 605 and the mounting block 604 to slide inside the second rectangular groove 603. The raising and lowering of the hydraulic rod 606 adjusts the angle of the unloading plate 602, thereby automatically unloading the conveying roller assembly 303 during conveying.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sintering furnace for photovoltaic cell manufacturing, characterized by: include, The base plate (1) has a combustion frame (2) installed at its top, and rectangular through holes (201) are opened on the side walls at both ends of the combustion frame (2). The base plate (1) has a mounting bracket (3) installed at its top, and a fixed crossbar (301) that passes through the rectangular through hole (201) is installed at the top of the mounting bracket (3). A rotating disk (302) is installed on the side wall of the fixed crossbar (301), and a conveying roller assembly (303) is installed inside the rotating disk (302) by rotating through a bearing. A drive assembly (304) is installed on one side wall of the fixed crossbar (301), and the output end of the drive assembly (304) is fixedly connected to one end of the conveying roller assembly (303). The base plate (1) has a limit adjustment mechanism (4) installed at its top, a second U-shaped frame (5) installed at its top, and a discharge mechanism (6) installed at its top.

2. The sintering furnace for manufacturing photovoltaic cells as described in claim 1, characterized in that: The top of the combustion frame (2) is equipped with a heating frame (202), and the top of the heating frame (202) is equipped with a heating tube (203).

3. The sintering furnace for manufacturing photovoltaic cells as described in claim 1, characterized in that: The limiting adjustment mechanism (4) includes a first U-shaped frame (401), which is fixedly installed on the top of the base plate (1). A first sliding groove (402) is provided on the top of the first U-shaped frame (401), and a first slider (403) is provided inside the first sliding groove (402). A limiting plate (404) is installed on the top of each of the first sliders (403), and a threaded hole body (405) is provided inside the limiting plate (404). A positive and negative threaded rod body (406) is threadedly connected inside the threaded hole body (405), and one end of the positive and negative threaded rod body (406) is rotatably connected to the side wall of the first U-shaped frame (401) through a bearing.

4. A sintering furnace for manufacturing photovoltaic cells as described in claim 1, characterized in that: The top of the second U-shaped frame (5) is provided with a second slide groove (501), and a second slider (502) is provided inside the second slide groove (501). The top of the second slider (502) is fixedly connected to the bottom of the limiting plate (404).

5. A sintering furnace for manufacturing photovoltaic cells as described in claim 1, characterized in that: The unloading mechanism (6) includes a mounting base (601) and a second rectangular groove (603). The mounting base (601) is fixedly installed on the top of the base plate (1). An unloading plate (602) is hinged inside the mounting base (601). The second rectangular groove (603) is opened on the top of the base plate (1). An mounting block (604) is provided inside the second rectangular groove (603). A hinge plate (605) is hinged to the top of the mounting block (604). The top of the hinge plate (605) is hinged to the bottom of the unloading plate (602).

6. A sintering furnace for manufacturing photovoltaic cells as described in claim 5, characterized in that: The bottom end of the unloading plate (602) is provided with a first rectangular groove (6021), the inside of the first rectangular groove (6021) is provided with a third sliding groove (6022), and the inner wall of the third sliding groove (6022) is provided with a third slider (6023). The end of the third slider (6023) away from the third sliding groove (6022) is provided with a connecting block (6024), and the bottom end of the connecting block (6024) is provided with a hinge seat (6025).

7. A sintering furnace for manufacturing photovoltaic cells as described in claim 1, characterized in that: The top of the base plate (1) is hinged to a hydraulic rod (606), and the top of the hydraulic rod (606) is hinged to the interior of the hinge seat (6025).

8. A sintering furnace for manufacturing photovoltaic cells as described in claim 1, characterized in that: The conveying roller assembly (303) consists of multiple sets of the same structure, and the multiple sets of conveying roller assemblies (303) are connected by chain and sprocket meshing.

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