CN216049097U - Ceramic roller shaft for sintering and conveying photovoltaic solar silicon wafers - Google Patents
Ceramic roller shaft for sintering and conveying photovoltaic solar silicon wafers Download PDFInfo
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- CN216049097U CN216049097U CN202121524588.2U CN202121524588U CN216049097U CN 216049097 U CN216049097 U CN 216049097U CN 202121524588 U CN202121524588 U CN 202121524588U CN 216049097 U CN216049097 U CN 216049097U
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Abstract
The utility model discloses a ceramic roller shaft for sintering and transmitting photovoltaic solar silicon wafers, which comprises a ceramic roller, a ceramic roller fixing sleeve, a ceramic roller rotating shaft driving chain wheel and two bearings with seats, wherein the ceramic roller fixing sleeve is arranged on the ceramic roller rotating shaft; the ceramic roller rotating shaft is arranged between the two bearings with the base, the ceramic roller rotating shaft driving chain wheel is fixedly sleeved on the ceramic roller rotating shaft, the ceramic roller fixing sleeve is arranged at one end of the ceramic roller rotating shaft, the tail end of the ceramic roller is fixedly connected with the ceramic roller fixing sleeve, and the ceramic roller, the ceramic roller fixing sleeve and the ceramic roller rotating shaft are coaxial; the circumference of the front end of the ceramic roller is provided with a circle of conical surface, and the front end surface of the ceramic roller is provided with a roller shaft tip. The ceramic roller shaft has the advantages of low production cost, less heat loss, small thermal deformation, high concentricity, small contact surface with a silicon wafer, automatic deviation correction of the silicon wafer and the like, so that the ceramic roller shaft constructed by the ceramic roller shaft can ensure the temperature control precision in a furnace, avoid the damage and the blockage of the silicon wafer and improve the sintering yield of the surface of the silicon wafer.
Description
Technical Field
The utility model belongs to the field of photovoltaic solar silicon wafer sintering equipment, and particularly relates to a ceramic roller shaft for sintering and conveying photovoltaic solar silicon wafers.
Background
In the process of preparing a photovoltaic solar silicon wafer, a sintering process is one of important steps. In order to improve sintering efficiency, reduce output power and reduce energy consumption, nowadays, a sintering furnace is usually added in the whole line of photovoltaic solar silicon wafer automation equipment.
At present, a mesh chain transmission mode adopted by the existing sintering furnace is used for transmitting the photovoltaic solar silicon wafer from a drying section (head) to a cooling section (tail) of the sintering furnace. However, the network link transmission method has the following disadvantages:
1. in the transmission process of the sintering furnace, partial heat can be taken away by the net chain, so that the temperature difference in the furnace is large, and the temperature control precision is poor; and at the outlet of the sintering furnace, the temperature of the net chain is higher, and the temperature in the furnace is more difficult to control.
2. In the transmission process of the sintering furnace, the net chain is easy to deviate, so that the surface sintering yield is low when the photovoltaic solar silicon wafer is in the sintering section.
3. In long-time operation, the net chain expands (lengthens) due to long-time heating, so that the net chain fluctuates, and the photovoltaic solar silicon wafer is seriously and even blocked.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the ceramic roller shaft for sintering and conveying the photovoltaic solar silicon wafer, so that a ceramic roller way penetrating through the whole sintering furnace can be constructed, the temperature control precision in the furnace is improved, the surface sintering yield of the silicon wafer is improved, and the silicon wafer is prevented from being blocked.
In order to solve the technical problems and achieve the technical effects, the utility model is realized by the following technical scheme:
a ceramic roll shaft for sintering and conveying photovoltaic solar silicon wafers comprises a ceramic roll, a ceramic roll fixing sleeve, a ceramic roll rotating shaft driving chain wheel and two bearings with seats; the ceramic roller rotating shaft is rotatably arranged between the two bearings with the base, the driving chain wheel of the ceramic roller rotating shaft is fixedly sleeved on the ceramic roller rotating shaft, the ceramic roller fixing sleeve is arranged at one end of the ceramic roller rotating shaft, the tail end of the ceramic roller is fixedly connected with the ceramic roller fixing sleeve, and the ceramic roller, the ceramic roller fixing sleeve and the ceramic roller rotating shaft are coaxial; a circle of conical surface with the diameter gradually reduced from back to front is arranged on the circumference of the front end of the ceramic roller, the diameter of the tail end of the conical surface is smaller than the diameter of the main body of the ceramic roller, and a roller shaft end tip coaxial with the ceramic roller is arranged on the front end face of the ceramic roller; the conical surface is used for contacting with the silicon wafer when the silicon wafer is transferred; the conical surface has a certain inclination angle, so that the silicon wafer can be automatically corrected in posture in the transmission process, and the deviation is prevented; meanwhile, the conical surface is in line contact with the silicon wafer, the contact area is small, sliding friction with the silicon wafer can be reduced, and damage to the silicon wafer is avoided.
Further, in order to bear the furnace temperature of up to 800 ℃ in the sintering furnace, the ceramic roller is made of high-frequency ceramic which can resist the high temperature of 1200 ℃.
Furthermore, the interior of the ceramic roller is of a hollow structure, and the wall thickness of the ceramic roller is 4 mm.
Further, the ceramic roller fixing sleeve and the ceramic roller rotating shaft need to keep concentricity during processing and installation, and the concentricity needs to be within 0.05 μm.
Furthermore, the inclination angle of the conical surface is 3-10 degrees, and preferably 5 degrees, so that the situation that the rear silicon wafer catches up with the front silicon wafer due to the size of the path of the front and rear silicon wafers in the silicon wafer transmission process is avoided, and the wafer blocking is caused.
Furthermore, the ceramic roller rotating shaft is fixedly sleeved with a ceramic roller rotating shaft driving chain wheel limiting sleeve, and the ceramic roller rotating shaft driving chain wheel is fixedly sleeved on the ceramic roller rotating shaft through the ceramic roller rotating shaft driving chain wheel limiting sleeve.
Further, the bottom of each of the two bearings with the seat is provided with a bearing seat cushion block used for being connected with the frame of the sintering furnace, and the bearings with the seat are fixedly connected with the bearing seat cushion blocks through screws.
Furthermore, in order to adapt to a scene that the length of the ceramic roller way required to be built is long, two ceramic roller rotating shaft driving chain wheels are fixedly sleeved on the ceramic roller rotating shaft.
The utility model has the beneficial effects that:
1. the ceramic roller adopts high-frequency ceramic capable of resisting high temperature of 1200 ℃, and can construct a ceramic roller way for silicon wafer sintering transmission in a pairwise manner, compared with the existing network chain transmission manner, the ceramic roller way formed by the ceramic roller shaft has less heat loss in the transmission process of a sintering furnace, thereby reducing the temperature difference in the furnace and ensuring the temperature control precision in the furnace; meanwhile, the ceramic roller cannot expand or deform due to long-time heating, and has the advantages of good transmission effect, long service life and low maintenance cost.
2. The ceramic roller has a hollow structure, so that the overall weight of the ceramic roller is reduced, the head and feet are prevented from being light when the ceramic roller rotates, materials can be saved, and the production cost is greatly saved.
3. The front end of the ceramic roller is provided with a conical surface for bearing one side of the silicon wafer, and the conical surface has a certain inclination angle, so that the silicon wafer can automatically perform posture correction in the transmission process, the deviation is prevented, and the sintering yield of the surface of the silicon wafer is greatly improved; meanwhile, the conical surface has a certain inclination angle, so when the conical surface bears the silicon wafer, the conical surface and the silicon wafer are in line contact, the contact area is small, the sliding friction with the silicon wafer can be reduced, and the silicon wafer is prevented from being damaged.
4. The conical surface of the ceramic roller is designed within the inclination angle range of 3-10 degrees, so that the distance travel of the tail end and the front end of the conical surface is reduced as much as possible on the basis of automatic deviation correction of the silicon wafer and reduction of the contact surface of the silicon wafer, and the situation that the front silicon wafer and the rear silicon wafer catch up with the front silicon wafer due to the distance travel is avoided in the silicon wafer transmission process.
5. The ceramic roller, the ceramic roller fixing sleeve and the ceramic roller rotating shaft keep higher concentricity during processing and installation, the concentricity reaches within 0.05 mu m, and the ceramic shaft can be prevented from moving in a circle manner that the front end of the ceramic shaft draws a circle by taking the axis as the center after installation, so that the condition that silicon wafers are broken due to unequal contact heights during transmission is avoided.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
FIG. 1 is a front side structural view of a ceramic roller shaft according to the present invention;
FIG. 2 is a rear side view schematically illustrating the construction of the ceramic roller shaft according to the present invention;
FIG. 3 is an enlarged view of the front end structure of the ceramic roller shaft according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. The description set forth herein is intended to provide a further understanding of the utility model and forms a part of this application and is intended to be an exemplification of the utility model and is not intended to limit the utility model to the particular embodiments illustrated.
Referring to fig. 1-3, a ceramic roller shaft for sintering and transmitting photovoltaic solar silicon wafers comprises a ceramic roller 1, a ceramic roller fixing sleeve 2, a ceramic roller rotating shaft 3, a ceramic roller rotating shaft driving chain wheel 4 and two bearings with seats 5; the ceramic roller rotating shaft 3 is rotatably arranged between the two bearings 5 with the base, the driving chain wheel 4 of the ceramic roller rotating shaft is fixedly sleeved on the ceramic roller rotating shaft 3, the ceramic roller fixing sleeve 2 is arranged at one end of the ceramic roller rotating shaft 3, the tail end of the ceramic roller 1 is fixedly connected with the ceramic roller fixing sleeve 2, and the ceramic roller 1, the ceramic roller fixing sleeve 2 and the ceramic roller rotating shaft 3 are coaxial; a circle of conical surface 6 with the diameter gradually reduced from back to front is arranged on the circumference of the front end of the ceramic roller 1, the diameter of the tail end of the conical surface 6 is smaller than the diameter of the main body of the ceramic roller 1, and a roller end tip 7 coaxial with the ceramic roller 1 is arranged on the front end face of the ceramic roller 1; the conical surface 6 is used for contacting with the silicon wafer when the silicon wafer is transferred; the conical surface 6 has a certain inclination angle, so that the silicon wafer can be automatically corrected in posture in the transmission process, and the deviation is prevented; meanwhile, the conical surface 6 is in line contact with the silicon wafer, the contact area is small, sliding friction with the silicon wafer can be reduced, and damage to the silicon wafer is avoided.
Further, the ceramic roller 1 is made of high-frequency ceramic with high temperature resistance of 1200 ℃, so that the manufactured ceramic roller 1 can bear the furnace temperature of up to 800 ℃ in a sintering furnace.
Further, ceramic roller 1 is inside to be hollow structure, just ceramic roller 1's wall thickness is 4mm, and this not only can alleviate ceramic roller 1's whole weight prevents that the head is heavy foot is light, can save material moreover, practices thrift the cost.
Furthermore, the ceramic roller 1, the ceramic roller fixing sleeve 2 and the ceramic roller rotating shaft 3 need to keep concentricity during processing and installation, the concentricity needs to be within 0.05 μm, and the phenomenon that the front end of the ceramic roller 1 draws a circle by taking an axis as a center after installation can be prevented, so that the condition that fragments are caused by unequal contact heights of silicon wafers during transmission is avoided.
Further, the inclination angle of the conical surface 6 is 3-10 degrees, and preferably 5 degrees. The inclination angle of the conical surface 6 needs to be designed within a certain range, if the inclination angle is small, the conical surface 6 does not have the function of automatically rectifying the deviation of the silicon wafer, if the inclination angle is large, the diameter difference between the tail end and the front end of the conical surface 6 is overlarge, and in the process of transmitting the silicon wafer, the silicon wafer at the tail end of the conical surface 6 and the silicon wafer in contact with the front end of the conical surface 6 have a relatively obvious speed difference. On the basis of automatic deviation correction of the silicon wafers and reduction of the contact surfaces of the silicon wafers, the silicon wafers can be prevented from catching up with the front silicon wafer due to the fact that the rear silicon wafer catches up with the front silicon wafer due to the size of the path of the front and rear silicon wafers in the transmission process of the silicon wafers.
Further, fixed cover is equipped with a ceramic roller pivot drive sprocket stop collar 8 in the ceramic roller pivot 3, ceramic roller pivot drive sprocket 4 passes through the fixed cover of ceramic roller pivot drive sprocket stop collar 8 is established in the ceramic roller pivot 3 is last, thereby can ensure ceramic roller pivot drive sprocket 4 is in the last position of ceramic roller pivot 3 does not squint.
Further, the bottom of each of the two bearings with seats 5 is provided with a bearing seat cushion block 9 used for being connected with the frame of the sintering furnace, and the bearings with seats 5 are fixedly connected with the bearing seat cushion blocks 9 through screws 10.
Further, two ceramic roller rotating shaft driving chain wheels 4 are fixedly sleeved on the ceramic roller rotating shaft 3; this is in order to adapt to the longer scene of the length of the ceramic roll table that needs to build, and when ceramic roll table was longer, single group chain sprocket probably can't effectively and stably driven the ceramic roller axle that is a great number, just can divide into two sets ofly with ceramic roller axle this moment, is driven by two sets of chain sprockets respectively.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a pottery roller that is used for sintering of photovoltaic solar energy silicon chip to transmit which characterized in that: comprises a ceramic roller (1), a ceramic roller fixing sleeve (2), a ceramic roller rotating shaft (3), a ceramic roller rotating shaft driving chain wheel (4) and two bearings (5) with seats; the ceramic roller rotating shaft (3) is rotatably arranged between the two bearings (5) with the base, the driving chain wheel (4) of the ceramic roller rotating shaft is fixedly sleeved on the ceramic roller rotating shaft (3), the ceramic roller fixing sleeve (2) is arranged at one end of the ceramic roller rotating shaft (3), the tail end of the ceramic roller (1) is fixedly connected with the ceramic roller fixing sleeve (2), and the ceramic roller (1), the ceramic roller fixing sleeve (2) and the ceramic roller rotating shaft (3) are coaxial; the ceramic roller is characterized in that a circle of conical surface (6) with the diameter gradually reduced from back to front is arranged on the circumference of the front end of the ceramic roller (1), the diameter of the tail end of the conical surface (6) is smaller than the diameter of the main body of the ceramic roller (1), and a roller shaft end tip (7) coaxial with the ceramic roller (1) is arranged on the end face of the front end of the ceramic roller (1).
2. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 1, characterized in that: the ceramic roller (1) is made of high-frequency ceramic with high temperature resistance of 1200 ℃.
3. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 1, characterized in that: the interior of the ceramic roller (1) is of a hollow structure.
4. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 3, characterized in that: the wall thickness of the ceramic roller (1) is 4 mm.
5. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 1, characterized in that: the concentricity of the ceramic roller (1), the ceramic roller fixing sleeve (2) and the ceramic roller rotating shaft (3) is within 0.05 mu m.
6. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 1, characterized in that: the inclination angle of the conical surface (6) is 3-10 degrees.
7. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 6, characterized in that: the inclination angle of the conical surface (6) is 5 degrees.
8. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 1, characterized in that: the ceramic roller rotating shaft (3) is fixedly sleeved with a ceramic roller rotating shaft driving chain wheel limiting sleeve (8), and the ceramic roller rotating shaft driving chain wheel (4) is fixedly sleeved with the ceramic roller rotating shaft driving chain wheel limiting sleeve (8) on the ceramic roller rotating shaft (3).
9. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 1, characterized in that: the bottom of each of the two bearings with the seat (5) is provided with a bearing seat cushion block (9) used for being connected with the frame of the sintering furnace, and the bearings with the seat (5) are fixedly connected with the bearing seat cushion blocks (9) through screws (10).
10. The ceramic roller shaft for sintering and conveying of photovoltaic solar silicon wafers as claimed in claim 1, characterized in that: the ceramic roller rotating shaft (3) is fixedly sleeved with two ceramic roller rotating shaft driving chain wheels (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121524588.2U CN216049097U (en) | 2021-07-06 | 2021-07-06 | Ceramic roller shaft for sintering and conveying photovoltaic solar silicon wafers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121524588.2U CN216049097U (en) | 2021-07-06 | 2021-07-06 | Ceramic roller shaft for sintering and conveying photovoltaic solar silicon wafers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216049097U true CN216049097U (en) | 2022-03-15 |
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ID=80616908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121524588.2U Active CN216049097U (en) | 2021-07-06 | 2021-07-06 | Ceramic roller shaft for sintering and conveying photovoltaic solar silicon wafers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216049097U (en) |
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2021
- 2021-07-06 CN CN202121524588.2U patent/CN216049097U/en active Active
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