Transmission device for chain rod type solar cell sintering furnace

Abstract

The utility model relates to the field of solar cell manufacturing, in particular to a transmission device for a chain rod type solar cell sintering furnace. Comprising a conveying assembly of a backflow type structure, the conveying assembly is provided with a horizontally-arranged conveying section, a backflow section and a transition section connected with the conveying section and the backflow section, the conveying assembly drives a plurality of pairs of supports which extend upwards in the direction perpendicular to the movement direction of the conveying section to rotate, and the transition assembly is arranged on at least one side of the conveying section. The transition assembly comprises a transition roller, and the transition roller is arranged between the pair of supports at the ends. The transition roller is arranged in the transition assembly, the transition roller is small in size and can be arranged between the pair of supports at the ends of the conveying assembly, interference between the supports and the transition roller during rotation is avoided, and due to the arrangement of the transition roller, when all sections of furnace bodies of the sintering furnace are used or the furnace bodies are in butt joint with other external equipment for use, the service life of the furnace bodies is prolonged. Even if the solar cell is in a high-temperature state, the solar cell can be directly transmitted and transferred without being cooled.

Description

Technical Field

[0001] The utility model relates to the field of solar cell manufacturing, and particularly to a transmission device for a link-type solar cell sintering furnace. Background Art

[0002] A solar cell refers to a semiconductor component that can effectively absorb solar energy and convert it into electrical energy. During its processing and manufacturing, a sintering operation is required. Since the length of a sintering furnace generally reaches more than 10 meters, and sometimes it is also combined with other devices such as a light injection device for use, and the combined length reaches more than 20 meters. For the convenience of production, transportation, and installation, the above devices are generally processed into several furnace bodies and assembled at the customer site. In this way, effective connection needs to be achieved between each furnace body to realize the safe transfer of solar cells between each furnace body. Since the link-type sintering furnace drives the carrying rack to move cyclically through a transmission chain, the bracket on the carrying rack has a traversed area of a turning radius at the end of each furnace body. In this way, an indented space that cannot be closely docked is formed between adjacent two carrying racks. The prior art generally uses a belt conveyor to perform transitional transmission on solar cells. Since the temperature of the sintered solar cells when they leave the furnace is as high as more than 300 °C, ordinary belts cannot withstand high temperatures and thus cannot realize the transmission and transfer of solar cells in a high-temperature state. It can only be achieved by extending the cyclically moving carrying rack a certain distance outside the furnace body, and the carried solar cells are cooled to a safe temperature or below before the transmission and transfer of solar cells between two furnace bodies and with other devices can be realized. This not only increases the length of the furnace body, but also the carrying rack extended outside the furnace body will cool down as the solar cells cool, increasing the heat loss of the carrying rack. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a transmission device for a link-type solar cell sintering furnace to solve the problem that the transmission component and the docking device cannot be close to each other in the prior art, resulting in the solar cells being prone to jolting, even getting stuck or falling during the transfer process.

[0004] The technical solution of the utility model is: a transmission device for a link-type solar cell sintering furnace, including a transmission component with a reflux structure. The transmission component has a horizontally arranged conveying section, a reflux section, and a transition section connecting the conveying section and the reflux section. The transmission component drives a plurality of pairs of brackets extending vertically upward in the movement direction of the conveying section to perform a rotary motion. At least one side of the conveying section is provided with a transition component, and the transition component includes a transition roller, and the transition roller is arranged between a pair of brackets at the end.

[0005] Preferably, the transition roller adopts any one of a horizontal roller shaft, an inclined roller shaft, or an air-floating roller shaft.

[0006] Preferably, the highest point at the top of the horizontal roller shaft is at the same height as the bottom surface of the solar cell supported on the bracket; the horizontal roller shaft is connected to a coaxial drive rod and is driven by a drive mechanism to rotate the drive rod and the horizontal roller shaft synchronously; the drive mechanism is arranged in an inclined direction so that the horizontal roller shaft is close to the transmission assembly.

[0007] Preferably, the inclined roller shafts are arranged in pairs and form an inverted V-shaped structure.

[0008] Preferably, the air-floating roller shaft is a pipe body with through holes on its outer wall or is made of a breathable microporous material;

[0009] The air-floating roller shaft is connected to an air supply device, and the internal airflow flows out along the vertical and / or inclined direction, where the inclined direction is towards the side of the moving direction of the solar cell.

[0010] Preferably, the transition assembly further includes a transmission roller, the transmission roller is distributed in the horizontal direction, and a transmission wheel with at least a part of its outer wall being conical is fixed, and the transmission wheel is coaxial with the transmission roller.

[0011] Preferably, the transmission assembly includes a carrier, a power source, a transmission wheel and two groups of symmetrically arranged transmission chains; the bracket is fixed on the carrier, a fixing member is installed on each group of the transmission chains, and the two ends of the carrier are respectively carried on the fixing members on both sides and move synchronously with the transmission chains.

[0012] Preferably, the power source is configured as a single-power drive, including a drive part, a first transmission part and a second transmission part; one group of the first transmission part is provided, and two groups of the second transmission part are provided;

[0013] The drive part is a motor, and the output end of the motor is connected to the input end of the first transmission part;

[0014] The output end of the first transmission part is respectively connected to the input ends of the two groups of the second transmission parts and evenly transmits the power to the second transmission parts;

[0015] The output ends of the two groups of the second transmission parts are respectively connected to the transmission wheels on the same side.

[0016] Preferably, the power source is configured as a single-power drive, including a drive part and a third transmission part coaxially connecting a pair of transmission wheels.

[0017] Preferably, the power source is configured as a dual-power drive, using two groups of drive parts, the drive parts are motors, the motors respectively drive the transmission chains to rotate, and the motors are directly connected or transmission-connected to any of the transmission wheels surrounded by the corresponding side transmission chains to form a driving wheel and drive other transmission wheels to rotate synchronously.

[0018] Compared with the prior art, the advantages of the present utility model are as follows:

[0019] (1) A transition component is provided at at least one end of the transmission component, so that when sintering furnaces are connected between each section or when docking with other external devices, even when the solar cells are in a high-temperature state and do not need to be cooled, the transmission and transfer can be directly achieved.

[0020] (2) The transition component can adopt any one of an air-floating roller shaft, a horizontal roller shaft or an inclined roller shaft. Among them, the settings of the horizontal roller shaft and the air-floating roller shaft can effectively avoid the area traversed by the rotation radius of the bracket, and the driving mechanism driving its rotation is arranged along the inclined direction, which can not only make the horizontal roller shaft closer to the carrying rack, but also make reasonable avoidance with other components at both ends of the carrying rack; the setting of the air-floating roller shaft can reduce the excessive contact between the solar cell and it through the action of air flow, avoid wear of the solar cell, and prevent it from being scratched. Description of the Drawings

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0022] Figure 1 It is a structural diagram of a transmission device for a link-type solar cell sintering furnace according to the present utility model;

[0023] Figure 2 It is a schematic diagram of the positions of the bracket, the transition roller and the transmission roller according to the present utility model;

[0024] Figure 3 It is a structural diagram of the horizontal roller shaft in one embodiment of the present utility model;

[0025] Figure 4 It is a structural diagram of the horizontal roller shaft in another embodiment of the present utility model;

[0026] Figure 5 It is a structural diagram of the inclined roller shaft according to the present utility model;

[0027] Figure 6 It is a structural diagram of the air-floating roller shaft according to the present utility model;

[0028] Figure 7 It is a structural diagram of the transmission component in one embodiment of the present utility model;

[0029] Figure 8 It is a structural diagram of the transmission component in another embodiment of the present utility model;

[0030] Figure 9 It is a structural diagram of the transmission component in another embodiment of the present utility model;

[0031] Figure 10Structural diagram of the transmission component in another embodiment of the present utility model;

[0032] Figure 11 Structural diagram of the transmission component in another embodiment of the present utility model;

[0033] Figure 12 Structural diagram of the transmission component in another embodiment of the present utility model;

[0034] Figure 13 Structural diagram of the transmission component in another embodiment of the present utility model;

[0035] Wherein:

[0036] 4. Transmission component, 41. Power source, 411. Driving part, 412. First transmission part, 413. Second transmission part, 414. Third transmission part, 42. Transmission wheel, 43. Transmission chain, 431. Fixing part, 44. Carrying frame, 45. Bracket, 46. Conveying section, 47. Return section, 48. Transition section;

[0037] 5. Transition component, 51. Transition roller, 51a. Horizontal roller shaft, 51b. Inclined roller shaft, 51c. Air-floating roller shaft, 511. Transmission rod, 512. Driving mechanism, 52. Transmission roller, 53. Transmission wheel. Specific embodiments

[0038] The following combines specific embodiments to further elaborate on the content of the present utility model:

[0039] A transmission device for a link-type solar cell sintering furnace is used to transmit solar cells in a link-type solar cell sintering furnace. It includes a transmission component 4 with a return-type structure as shown in Figure 1 and Figure 2 . The transmission component 4 has a rectangular structure and includes a conveying section 46 arranged horizontally above and a return section 47 located below connected by an inclined or vertical transition section 48. As shown in Figure 7 - Figure 13 , the transmission component 4 includes a carrying frame 44, a power source 41, a transmission wheel 42 and two groups of symmetrically arranged transmission chains 43. A bracket 45 is arranged on the carrying frame 44, and the solar cells are carried on the bracket 45. As shown in Figure 8 and Figure 12 , a fixing part 431 is installed on each group of transmission chains 43, and both ends of the carrying frame 44 are respectively carried on the fixing parts 431 on both sides and move synchronously with the transmission chain 43.

[0040] As shown in Figure 7 - Figure 10As shown, the power source 41 is configured as a single power drive, including a driving part 411, a first transmission part 412 and a second transmission part 413. The first transmission part 412 is provided in one group, and the second transmission part 413 is symmetrically provided in two groups. The output end of the first transmission part 412 is respectively connected to the input end of the two groups of second transmission parts 413 at the same time, and the power is evenly transmitted to the two groups of second transmission parts 413. The output ends of the two groups of second transmission parts 413 are respectively connected to the transmission wheels 42 on the same side. In this way, the power can be evenly transmitted to the transmission wheels 42 on both sides, and the problem of uneven transmission of the transmission chains 43 on both sides can be avoided during long-term application.

[0041] In other embodiments of the present application, the transmission component may also be configured as follows: Figure 11 As shown, the power source 41 is configured as a single power drive, including a driving portion 411 and a third transmission portion 414 coaxially connected to a pair of transmission wheels 42 .

[0042] Or Figure 12 As shown, the power source 41 is configured as a dual-power drive, using two sets of drive units 411, and the drive units 411 use motors, which respectively drive the two transmission chains 43 to rotate. The motors are directly connected to any transmission wheel 42 around which the corresponding side transmission chain 43 surrounds. Or, as Figure 13 As shown, the motor is connected to any transmission wheel 42 surrounded by the corresponding side transmission chain 43, which is constructed as a driving wheel and drives other transmission wheels 42 to rotate synchronously. The transmission connection method can adopt a combination of synchronous wheels, synchronous chains, or a pair of meshing gears.

[0043] like Figure 1 and Figure 2 As shown, the carrier 44 on the conveying section 46 is driven by the transmission chain 43 to transport the solar cells carried on the bracket 45 along the direction shown in the figure. In application scenarios, the sintering furnace is sometimes connected to other equipment such as light injection equipment for use in combination, or the sintering furnace is designed in sections, and each section of the furnace body must also be effectively connected, so the transition between adjacent equipment is very important.

[0044] Combination Figure 2 As shown, because the bracket 45 itself has a height, the turning radius of the base of the bracket 45 is R1, and the turning radius of the top of the bracket 45 is R2. In order to ensure that the bracket 45 can effectively turn, the adjacent connecting devices must be arranged outside the space traversed by the turning radius R2; furthermore, combined with Figure 6 As shown, in the case where the transition roller 51 is not provided, a recessed space will be formed between the pair of brackets 45, which will affect the transmission of the solar cells.

[0045] Therefore, in this embodiment, the transition assembly 5 includes a transition roller 51, which is arranged between a pair of brackets 45 at the end. The solar cell is transferred from the bracket 45 to the adjacent device through the transition roller 51, avoiding the problem of transmission interruption.

[0046] In this embodiment, as Figure 3 and Figure 4 shown, the transition roller 51 adopts a horizontal roller shaft 51a. The horizontal roller shaft 51a is made of temperature-resistant and / or wear-resistant and / or corrosion-resistant materials, and the height of the highest point at the top is the same as the bottom surface of the solar cell supported on the bracket 45. The horizontal roller shaft 51a is connected with a transmission rod 511 arranged coaxially, and the transmission rod 511 and the horizontal roller shaft 51a are driven to rotate synchronously by a driving mechanism. The driving mechanism is arranged along an inclined direction, so that the horizontal roller shaft 51a is close to the transmission assembly 4.

[0047] In other embodiments of the present application, as Figure 5 shown, the transition roller 51 adopts an inclined roller shaft 51b. The inclined roller shafts 51b are arranged in pairs and are made of temperature-resistant and / or wear-resistant and / or corrosion-resistant materials. A pair of inclined roller shafts 51b form an inverted V-shaped structure. In this embodiment, any inclined roller shaft 51b is driven to rotate by an independently arranged driving motor. In other embodiments, a single driving motor can also be used to drive a pair of inclined roller shafts 51b to rotate through conventional transmission devices such as synchronous belts, gears, and chains.

[0048] In other embodiments of the present application, as Figure 6 shown, the transition roller 51 adopts an air-floating roller shaft 51c. The air-floating roller shaft 51c has a tube body with through holes opened on the outer wall, or is composed of breathable microporous materials. The air-floating roller shaft 51c is connected with a ventilation device, and the internal air flows out along the vertical and / or inclined direction through the outer wall. When the air flows out along the inclined direction, the inclined direction faces the side of the moving direction of the solar cell.

[0049] When there is still a large distance to the device adjacent to the furnace body, the transition assembly 5 further includes a transmission roller 52. The transmission roller 52 is distributed in the horizontal direction and is fixed with a transmission wheel 53 at least a part of whose outer wall is conical. The transmission wheel 53 is coaxial with the transmission roller 52.

[0050] The above embodiments are only used to illustrate the technical concept and characteristics of the present utility model. The purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present utility model.

Claims

1. A transmission device for a chain-rod type solar cell sintering furnace, comprising a transmission component (4) of a reflux type structure, wherein the transmission component (4) has a horizontally arranged conveying section (46), a reflux section (47) and a transition section (48) connecting the conveying section (46) and the reflux section (47), wherein the transmission component (4) drives a plurality of pairs of brackets (45) extending upward perpendicular to the movement direction of the conveying section (46) to perform a rotational movement, characterized in that: A transition assembly (5) is provided on at least one side of the conveying section (46), wherein the transition assembly (5) comprises a transition roller (51), and the transition roller (51) is provided between a pair of brackets (45) at the end.

2. A transmission device for a chain-rod type solar cell sintering furnace according to claim 1, characterized in that: The transition roller (51) is any one of a horizontal roller shaft (51a), an inclined roller shaft (51b), and an air-floating roller shaft (51c).

3. A transmission device for a chain-rod type solar cell sintering furnace according to claim 2, characterized in that: The highest point of the top of the horizontal roller (51a) is at the same height as the bottom surface of the solar cell supported by the bracket (45); the horizontal roller (51a) is connected to a coaxially arranged transmission rod (511), and the transmission rod (511) and the horizontal roller (51a) are driven to rotate synchronously through a driving mechanism (512); the driving mechanism (512) is arranged in an inclined direction so that the horizontal roller (51a) is close to the transmission component (4).

4. A transmission device for a chain-rod type solar cell sintering furnace according to claim 2, characterized in that: The inclined rollers (51b) are arranged in pairs and are in an inverted figure eight structure.

5. The transmission device for a chain-rod type solar cell sintering furnace according to claim 2, characterized in that: The air floating roller shaft (51c) is made of a tube with through holes on the outer wall, or is made of air-permeable microporous material; The air floating roller shaft (51c) is connected to a ventilation device, and the internal airflow flows out in a vertical and / or inclined direction, wherein the inclined direction is toward the moving direction of the solar cell.

6. The transmission device for a chain-rod type solar cell sintering furnace according to claim 1, characterized in that: The transition assembly (5) further comprises a transmission roller (52), the transmission roller (52) being distributed in a horizontal direction and being fixed with a transmission wheel (53) having at least a portion of an outer wall in a conical shape, and the transmission wheel (53) being coaxial with the transmission roller (52).

7. The transmission device for a chain-rod type solar cell sintering furnace according to claim 1, characterized in that: The transmission assembly (4) comprises a mounting frame (44), a power source (41), a transmission wheel (42) and two groups of symmetrically arranged transmission chains (43); the bracket (45) is fixed on the mounting frame (44), each group of the transmission chains (43) is installed with a fixing member (431), and the two ends of the mounting frame (44) are respectively mounted on the fixing members (431) on both sides and move synchronously with the transmission chains (43).

8. The transmission device for a chain-rod type solar cell sintering furnace according to claim 7, characterized in that: The power source (41) is configured as a single power drive, comprising a driving part (411), a first transmission part (412) and a second transmission part (413); the first transmission part (412) is provided in one group, and the second transmission part (413) is provided in two groups; The driving part (411) adopts a motor, and the output end of the motor is connected to the input end of the first transmission part (412); The output end of the first transmission part (412) is respectively connected to the input ends of two groups of the second transmission parts (413), and the power is evenly transmitted to the second transmission parts (413); The output ends of the two groups of the second transmission parts (413) are respectively connected to the transmission wheel (42) on the same side.

9. The transmission device for a chain-rod type solar cell sintering furnace according to claim 7, characterized in that: The power source (41) is configured as a single power drive, comprising a driving portion (411) and a third transmission portion (414) coaxially connected to a pair of transmission wheels (42).

10. The transmission device for a chain-rod type solar cell sintering furnace according to claim 7, characterized in that: The power source (41) is configured as a dual-power drive, using two sets of drive parts (411). The drive parts (411) use motors, and the motors respectively drive the transmission chains (43) to rotate. The motors are directly connected or transmission-connected to any of the transmission wheels (42) surrounded by the transmission chains (43) on the corresponding sides, and are configured as driving wheels, and drive other transmission wheels (42) to rotate synchronously.

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