CN118002398A - Precoating device - Google Patents
Precoating device Download PDFInfo
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- CN118002398A CN118002398A CN202410410779.8A CN202410410779A CN118002398A CN 118002398 A CN118002398 A CN 118002398A CN 202410410779 A CN202410410779 A CN 202410410779A CN 118002398 A CN118002398 A CN 118002398A
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- rotating shaft
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- coating
- rotation shaft
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- 230000008093 supporting effect Effects 0.000 claims abstract description 94
- 239000011248 coating agent Substances 0.000 claims abstract description 81
- 238000000576 coating method Methods 0.000 claims abstract description 81
- 230000005484 gravity Effects 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 239000000758 substrate Substances 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Coating Apparatus (AREA)
Abstract
The invention discloses a precoating device, which comprises: the device comprises a mounting bracket, a rotating shaft and a supporting component. The rotating shaft is rotatably arranged on the mounting bracket and is used for attaching the coating liquid sprayed by the coating head. The supporting component is arranged below the rotating shaft and is used for applying acting force back to the gravity direction to the rotating shaft. The supporting component applies acting force back to the gravity direction to the rotating shaft, so that the rotating shaft deformation caused by insufficient rigidity of the rotating shaft can be reduced or avoided, the straightness of the rotating shaft is ensured, the distance between the rotating shaft and the coating head is kept consistent, the pre-coating effect of the coating head is improved, the coating uniformity of the coating head on a substrate is improved, the photoelectric conversion efficiency of a perovskite solar cell is improved, the rigidity of the rotating shaft is not required to be enhanced by increasing the diameter of the rotating shaft, the material cost and the processing difficulty of the rotating shaft can be reduced, and meanwhile, the running stability of the rotating shaft can be improved.
Description
Technical Field
The invention relates to the technical field of coating equipment, in particular to a precoating device.
Background
The perovskite solar cell is a solar cell using perovskite structural materials as light absorption materials, belongs to third-generation solar cells, has the advantages of high photoelectric conversion efficiency, low production cost, simple preparation process, high flexibility and the like, and is widely applied to the fields of photovoltaic power generation, electric vehicles, electronic equipment and the like.
In the production process of the perovskite solar cell, a perovskite solution needs to be coated on a substrate through a coating head to form a perovskite film layer, and the photoelectric conversion efficiency of the perovskite solar cell can be affected by the uniformity of the perovskite solution coating. In the actual production process, the perovskite solution extruded by the coating head is uneven every time, and the substrate is coated after the coating head is required to be pre-coated, so as to ensure the uniformity of coating.
In the prior art, the coating head is pre-coated on the rotating shaft of the pre-coating device, and because the rotating shaft is relatively long and the rigidity of the rotating shaft is insufficient, the rotating shaft can be bent, so that the distance between the coating head and the rotating shaft cannot be kept consistent, the pre-coating effect of the coating head is affected, and the coating uniformity of the coating head on the substrate is further affected. Even though the rigidity of the rotating shaft is increased by increasing the diameter of the rotating shaft, the weight of the rotating shaft is increased, the bending phenomenon of the rotating shaft cannot be avoided, the material cost of the rotating shaft is increased, and the processing difficulty of the rotating shaft is increased. How to improve the precoating effect of the precoating device is a difficult problem which needs to be solved urgently.
Disclosure of Invention
The invention aims to provide a precoating device which can reduce or avoid deformation of a rotating shaft so as to keep the distance between the rotating shaft and a coating head consistent, thereby improving the precoating effect of the coating head, further improving the coating uniformity of the coating head on a substrate, improving the photoelectric conversion efficiency of a perovskite solar cell, reducing the material cost and the processing difficulty of the rotating shaft and improving the running stability of the rotating shaft.
The invention adopts the following technical scheme:
a pre-coating apparatus comprising:
A mounting bracket;
A rotating shaft rotatably provided to the mounting bracket, the rotating shaft being for attaching a coating liquid ejected from a coating head;
the support assembly is arranged below the rotating shaft and is used for applying acting force back to the gravity direction to the rotating shaft.
Preferably, the support assembly comprises a support block and a support base, wherein a first groove and a ventilation joint communicated with the first groove are arranged on the support base, the support block is arranged in the first groove, and the ventilation joint is used for being connected with an air supply device and inflating into the first groove so that the support block applies acting force back to the gravity direction to the rotating shaft.
Preferably, one surface of the supporting block facing the rotating shaft is an arc supporting surface smaller than a semicircle, and after the arc supporting surface of the supporting block contacts with the rotating shaft, the arc supporting surface of the supporting block is spread and matched with the surface shape of the rotating shaft so as to increase the contact area between the supporting block and the rotating shaft.
Preferably, the support block has a support body and a support portion, the support portion is disposed on a side of the support body facing the rotation shaft, and a surface of the support portion facing the rotation shaft is an arc-shaped support surface smaller than a semicircle, so as to increase a contact area between the support portion and the rotation shaft.
Preferably, the supporting part comprises a first supporting part and a second supporting part which are respectively arranged at two sides of the supporting body, and the first supporting part and the second supporting part are arranged at intervals and protrude out of the supporting body so as to separate the rotating shaft from the supporting body; and/or the number of the groups of groups,
The first support portion and the second support portion are each made of an elastic material.
Preferably, at least part of the support blocks have an outer diameter less than or equal to the aperture of the first recess; and/or the number of the groups of groups,
The support assembly further includes a seal disposed between an outer periphery of the support block and an inner peripheral wall of the first recess of the support base.
Preferably, one side of the support block facing away from the rotating shaft is provided with one or more second grooves, and the second grooves are communicated with the first grooves.
Preferably, the device further comprises a pressure regulating valve, wherein the pressure regulating valve is used for regulating the air pressure value in the first groove so as to control the acting force of the support assembly on the rotating shaft, which acts against the gravity direction.
Preferably, the number of the supporting components is one or more, and when the number of the supporting components is one, the supporting components are arranged at an intermediate position below the rotating shaft; when the number of the supporting components is multiple, the supporting components are uniformly arranged below the rotating shaft at intervals along the axial direction of the rotating shaft.
Preferably, the mounting bracket includes a first support member and a second support member respectively disposed at both ends of the rotation shaft, and the first support member and the second support member are respectively used for supporting both ends of the rotation shaft.
Compared with the prior art, the invention has the beneficial effects that at least:
According to the precoating device, the supporting component applies the acting force back to the gravity direction to the rotating shaft, so that the deformation of the rotating shaft caused by insufficient rigidity of the rotating shaft can be reduced or avoided, the straightness of the rotating shaft is ensured, the distance between the rotating shaft and the coating head is kept consistent, the precoating effect of the coating head is improved, the coating uniformity of the coating head on a substrate is further improved, the photoelectric conversion efficiency of a perovskite solar cell is improved, the rigidity of the rotating shaft is not required to be enhanced by increasing the diameter of the rotating shaft, the material cost and the processing difficulty of the rotating shaft can be reduced, and meanwhile, the running stability of the rotating shaft can be improved.
Drawings
Fig. 1 is a schematic perspective view of a precoating apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic plan view of a precoating apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of fig. 2 taken along the A-A direction.
Fig. 4 is a schematic perspective view of a support assembly according to an embodiment of the present invention.
Fig. 5 is an exploded view of the structure of the support assembly according to the embodiment of the present invention.
Fig. 6 is a schematic perspective view of a rotary shaft according to an embodiment of the present invention.
In the figure: 100. a precoating device; 1. a mounting bracket; 11. a bottom wall; 12. a first sidewall; 13. a second sidewall; 14. an accommodation space; 15. a first end plate; 16. a second end plate; 17. a first support; 18. a second support; 2. a rotation shaft; 21. a first end; 22. a second end; 23. a first connecting shaft; 24. a second connecting shaft; 3. a support assembly; 31. a support block; 311. a support body; 3111. a second groove; 312. a support part; 3121. a first support portion; 3122. a second supporting part; 313. a third groove; 32. a support base; 321. a first groove; 322. an air intake passage; 33. a vent fitting; 34. a seal; 4. a pressure regulating valve; 5. a driving device; 200. and (3) a coating head.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted.
The words expressing the positions and directions described in the present invention are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a pre-coating apparatus 100 comprising: the mounting bracket 1, the rotation shaft 2 and the support assembly 3 may further include a cleaning assembly (not shown). The rotating shaft 2, the supporting component 3 and the cleaning component are arranged on the mounting bracket 1, the supporting component 3 is arranged below the rotating shaft 2 and is used for applying acting force back to the gravity direction to the rotating shaft 2, and the cleaning component is used for cleaning the rotating shaft 2 so as to remove coating liquid on the rotating shaft 2.
Specifically, referring to fig. 1 and 3, the mounting bracket 1 is a hollow cuboid, the mounting bracket 1 may include a bottom wall 11, and a first side wall 12 and a second side wall 13 disposed opposite to two sides of the bottom wall 11, where the first side wall 12 and the second side wall 13 are disposed perpendicular or approximately perpendicular to the bottom wall 11, and the first side wall 12 and the second side wall 13 are disposed parallel or approximately parallel, so that a section of the mounting bracket 1 perpendicular to an axial direction of the rotation shaft 2 is in a U shape, and the bottom wall 11, the first side wall 12, and the second side wall 13 enclose to form a containing space 14. The mounting bracket 1 may also be provided with a first end plate 15 and a second end plate 16 at both ends, and the first end plate 15 and the second end plate 16 may prevent the outflow of waste liquid in the accommodating space 14.
Referring to fig. 3 and 6, the rotation shaft 2 may be entirely cylindrical, at least a portion of the rotation shaft 2 is disposed in the accommodation space 14, and the rotation shaft 2 is used to attach the coating liquid ejected from the coating head 200. The rotation shaft 2 is preferably made of stainless steel, which has corrosion resistance and high strength, and ensures stable operation of the rotation shaft 2 for a long period of time. The length of the rotation shaft 2 is greater than or equal to the length of the coating head 200, so that it is ensured that the coating liquid sprayed during the pre-coating of the coating head 200 can be entirely adhered to the rotation shaft 2, thereby improving the pre-coating effect of the coating head 200. The length of the rotating shaft 2 is preferably longer than that of the coating head 200, so that the accuracy requirement of the coating head 200 on the rotating shaft 2 can be reduced, and the coating liquid sprayed by the coating head 200 during pre-coating can be further ensured to be fully adhered to the rotating shaft 2. The length of the rotating shaft 2 is smaller than or equal to the length of the mounting bracket 1, that is, the length of the rotating shaft 2 is smaller than or equal to the length of the accommodating space 14, so that the rotating shaft 2 is completely positioned in the accommodating space 14 in the length direction, and the coating liquid attached to the rotating shaft 2 is ensured not to flow out of the accommodating space 14.
Referring to fig. 1 and 6, the rotary shaft 2 has opposite first and second ends 21 and 22, the first and second ends 21 and 22 of the rotary shaft 2 may be provided with first and second connection shafts 23 and 24, respectively, and the first and second connection shafts 23 and 24 pass through the first and second end plates 15 and 16, respectively, and the first and second connection shafts 23 and 24 are rotatably connected with the first and second end plates 15 and 16, respectively, while the first and second end plates 15 and 16 have a certain supporting effect on the rotary shaft 2, improving the stability of the rotation of the rotary shaft 2. The other end of the first connecting shaft 23 may be connected to the driving device 5, the other end of the second connecting shaft 24 may also be connected to the driving device 5, the driving device 5 may be a motor, and the motor may drive the rotation shaft 2 to rotate, so as to realize automatic rotation of the rotation shaft 2. The number of the driving devices 5 may be one or two, and when the driving devices 5 are one, the driving devices 5 are connected to the rotation shaft 2 through the first connection shaft 23 or the second connection shaft 24 and can drive the rotation shaft 2 to rotate. When there are two driving devices 5, the two driving devices 5 are connected to the first end 21 and the second end 22 of the rotating shaft 2 through the first connecting shaft 23 and the second connecting shaft 24, respectively, and drive the rotating shaft 2 to rotate at the same time, and the two driving devices 5 are synchronous motors. The driving device 5 may also be connected to a controller (not shown), which may control parameters such as the speed, time, etc. of rotation of the driving device 5, so as to meet the actual production needs.
In some embodiments, referring to fig. 1 and 6, the mounting bracket 1 may further include first and second supports 17 and 18 provided at first and second ends 21 and 22 of the rotation shaft 2, respectively, the first and second supports 17 and 18 being for supporting the first and second ends 21 and 22 of the rotation shaft 2, respectively. The first supporting member 17 and the second supporting member 18 are respectively disposed outside the first end 21 and the second end 22 of the rotating shaft 2, and the first connecting shaft 23 and the second connecting shaft 24 are respectively rotatably connected with the first supporting member 17 and the second supporting member 18, so that the stability of the rotating shaft 2 is further improved, and the precoating effect of the coating head 200 is further improved.
Referring to fig. 3, the support assembly 3 is disposed below the rotating shaft 2, and the support assembly 3 is used to apply a force against the rotating shaft 2 in a direction opposite to the gravitational force, in this embodiment, the support assembly 3 is disposed on the bottom wall 11 of the mounting bracket 1 and is located in the accommodating space 14. That is, the support assembly 3 may directly apply a force against the rotational shaft 2 in the direction of gravity, which may be a floating support force against the direction of gravity. In this way, not only the deformation of the rotating shaft 2 caused by the insufficient rigidity of the rotating shaft 2, that is, the bending deformation of the rotating shaft 2 is reduced or avoided, the straightness of the rotating shaft 2 is ensured, so that the distance between the rotating shaft 2 and the coating head 200 is kept consistent, that is, the distance between the rotating shaft 2 and the coating head 200 is kept consistent all the time in the rotating process, the coating head 200 can keep consistent when pre-coating is performed on the rotating shaft 2, thus the pre-coating effect of the coating head 200 is improved, the coating uniformity of the coating head 200 on a substrate is improved, the photoelectric conversion efficiency of the perovskite solar cell is improved, the rigidity of the rotating shaft 2 is not required to be enhanced by increasing the diameter of the rotating shaft 2, and therefore, the material cost and the processing difficulty of the rotating shaft 2 are reduced, the load of the mounting bracket 1 is also reduced, that is, the abrasion between the rotating shaft 2 and the mounting bracket 1 is reduced, the service life of the rotating shaft 2 and the mounting bracket 1 is prolonged, and the service life of the pre-coating device 100 is prolonged, and meanwhile the running stability of the rotating shaft 2 is also improved.
The number of the supporting components 3 is one or more, when the number of the supporting components 3 is one, the middle position of the rotating shaft 2 is bent and sunk most seriously, and the supporting components 3 are arranged at the middle position below the rotating shaft 2, so that the straightness of the rotating shaft 2 can be improved, the loads at the two ends of the mounting bracket 1 can be balanced, and the rotating shaft 2 and the mounting bracket 1 can run more stably and smoothly. When the number of the supporting components 3 is plural, the supporting components 3 are uniformly spaced below the rotating shaft 2 along the axial direction of the rotating shaft 2, so that the rotating shaft 2 receives uniform acting force, and the straightness of the rotating shaft 2 is improved.
In a specific embodiment, referring to fig. 3,4 and 5, the support assembly 3 may include a support block 31 and a support base 32, the support base 32 may be provided with a first groove 321 and a vent connector 33 in communication with the first groove 321, the support block 31 is disposed in the first groove 321, and the vent connector 33 is used for connecting with an air supply device (not shown) and inflating into the first groove 321, so that the support block 31 applies a force against the rotation shaft 2 facing away from the direction of gravity. The air vent joint 33 may be disposed outside the support base 32, and the support base 32 is provided with an air inlet channel 322, and the air vent joint 33 communicates with the first groove 321 through the air inlet channel 322. The shape of the first groove 321 is matched with the supporting block 31 so that the supporting block 31 can be installed in the first groove 321 and the supporting block 31 can be lifted and lowered in the first groove 321. When the air supply device is inflated in the first groove 321, the air pressure in the first groove 321 is increased, thrust is generated to the supporting block 31, along with the increase of the air pressure, the thrust received by the supporting block 31 is also increased, when the thrust received by the supporting block 31 is larger than the gravity of the supporting block 31 and the friction between the supporting block 31 and the supporting base 32, the supporting block 31 can apply the acting force against the gravity direction to the rotating shaft 2, so that the bending deformation of the rotating shaft 2 can be reduced or avoided, the straightness of the rotating shaft 2 is ensured, the distance between the rotating shaft 2 and the coating head 200 is kept consistent, namely, the rotating shaft 2 can be always kept consistent with the distance between the coating head 200 in the rotating process, the pre-coating effect of the coating head 200 on the rotating shaft 2 can be kept consistent, the pre-coating effect of the coating head 200 is improved, the coating uniformity of the coating head 200 on a substrate is further improved, the photoelectric conversion efficiency of a perovskite solar cell is improved, the supporting block 31 bears a part of the weight of the rotating shaft 2, the load of the mounting bracket 1 is reduced, the wear between the rotating shaft 2 and the rotating shaft 1 is prolonged, the service life of the pre-coating device is prolonged, and the service life of the rotating shaft 100 is prolonged.
Referring to fig. 3, one or more second grooves 3111 may be provided at a side of the support block 31 facing away from the rotation shaft 2, the second grooves 3111 being in communication with the first grooves 321, and the second grooves 3111 may reduce the weight of the support block 31, i.e., may reduce the thrust required by the support block 31, so that the pressure requirement of the air pressure in the first grooves 321 may be reduced. When the number of the second grooves 3111 is one, the second grooves 3111 are disposed at the middle position of the supporting block 31, and when the number of the second grooves 3111 is plural, the plurality of second grooves 3111 are uniformly distributed on the supporting block 31, so that the overall gravity distribution of the supporting block 31 is uniform, meanwhile, the second grooves 3111 also have a guiding effect on the gas, and when the supporting block 31 is subject to the thrust of the gas, the plurality of second grooves 3111 are distributed at intervals, so that the structural strength of the supporting block 31 can be further enhanced.
Preferably, referring to fig. 4 and 5, the surface of the support block 31 facing the rotation shaft 2 may be an arc-shaped support surface smaller than a semicircle, and the arc-shaped support surface of the support block 31 is thinner at the end far away from the support base 32, so that deformation is more likely to occur, and after the arc-shaped support surface of the support block 31 contacts the rotation shaft 2, the arc-shaped support surface of the support block 31 is spread and matched with the surface shape of the rotation shaft 2, so as to increase the contact area between the support block 31 and the rotation shaft 2. So can avoid forming point contact or line contact between supporting shoe 31 and the rotation axis 2, make the supporting shoe 31 form the face contact with the rotation axis 2, reduced the pressure between supporting shoe 31 and the rotation axis 2, reduced the influence that supporting shoe 31 caused to the surface of rotation axis 2.
In some embodiments, referring to fig. 4 and 5, the radius of the arc-shaped supporting surface of the supporting block 31 may be smaller than the radius of the rotating shaft 2, and after the arc-shaped supporting surface of the supporting block 31 contacts the rotating shaft 2, the arc-shaped supporting surface of the supporting block 31 is spread and matched with the surface shape of the rotating shaft 2, so as to increase the contact area between the supporting block 31 and the rotating shaft 2.
In this embodiment, referring to fig. 4 and 5, the support block 31 may have a support body 311 and a support portion 312, the support portion 312 may be disposed on a side of the support body 311 facing the rotation shaft 2, a surface of the support portion 312 facing the rotation shaft 2 may be an arc-shaped support surface smaller than a semicircle, a thickness of an end of the arc-shaped support surface of the support portion 312 away from the support body 311 is thinner, and deformation is easier to occur, after the arc-shaped support surface of the support portion 312 contacts the rotation shaft 2, the arc-shaped support surface of the support portion 312 is spread and matched with a surface shape of the rotation shaft 2, so as to increase a contact area between the support portion 312 and the rotation shaft 2. In this way, point contact or line contact between the support portion 312 and the rotating shaft 2 can be avoided, so that surface contact is formed between the support portion 312 and the rotating shaft 2, the pressure between the support portion 312 and the rotating shaft 2 is reduced, and the influence of the support portion 312 on the surface of the rotating shaft 2 is reduced. The support body 311 and the support portion 312 may be integrally formed, and the support body 311 and the support portion 312 may be separated.
In some embodiments, referring to fig. 4 and 5, the radius of the arc-shaped supporting surface of the supporting portion 312 is smaller than the radius of the rotating shaft 2, and after the arc-shaped supporting surface of the supporting portion 312 contacts the rotating shaft 2, the arc-shaped supporting surface of the supporting portion 312 is spread and matched with the surface shape of the rotating shaft 2, so as to increase the contact area between the supporting portion 312 and the rotating shaft 2.
As a preferred embodiment, referring to fig. 4 and 5, the support portion 312 may include a first support portion 3121 and a second support portion 3122 disposed at both sides of the support body 311, respectively, one surface of the first support portion 3121 and the second support portion 3122 facing the rotation shaft 2 may each be an arc-shaped support surface smaller than a semicircle, or a radius of the arc-shaped support surface of the first support portion 3121 and a radius of the arc-shaped support surface of the second support portion 3122 are each smaller than a radius of the rotation shaft 2, the first support portion 3121 and the second support portion 3122 provide support for the rotation shaft 2 from both sides, respectively, and the first support portion 3121 and the second support portion 3122 are disposed at intervals and protrude from the support body 311 such that the rotation shaft 2 is separated from the support body 311. That is, the support body 311 between the first support portion 3121 and the second support portion 3122 is not covered by the first support portion 3121 and the second support portion 3122, and the arc-shaped support surface of the first support portion 3121 and the arc-shaped support surface of the second support portion 3122 are both higher than the support body 311 and form a height difference, and the first support portion 3121 and the second support portion 3122 can position the lowest position of the rotation shaft 2 above the support body 311, avoiding the rotation shaft 2 from forming a point contact or a line contact with the support body 311, thereby avoiding friction between the rotation shaft 2 and the support body 311.
The support portion 312 is preferably made of an elastic material, i.e., the first support portion 3121 and the second support portion 3122 are each preferably made of an elastic material, which may be plastic or the like. The support portion 312 is further preferably made of a material having both corrosion resistance and a low friction coefficient, so that not only the friction between the support portion 312 and the rotating shaft 2 can be reduced, but also the corrosion of the support portion 312 by the cleaning liquid of the cleaning assembly can be prevented.
Referring to fig. 3 and 4, at least part of the supporting blocks 31 have an outer diameter smaller than or equal to the aperture of the first groove 321, in this embodiment, at least part of the supporting blocks 31 have an outer diameter smaller than the aperture of the first groove 321, so that, on one hand, the supporting blocks 31 can be ensured to lift in the first groove 321, and on the other hand, the supporting blocks 31 can swing left and right in the first groove 321, that is, the supporting blocks 31 can support the rotating shaft 2 from different directions, so that surface contact between the supporting portion 312 and the rotating shaft 2 can be ensured, so that the contact area between the supporting portion 312 and the rotating shaft 2 is increased, the pressure between the supporting portion 312 and the rotating shaft 2 is reduced, and the influence of the supporting portion 312 on the surface of the rotating shaft 2 is reduced.
In a specific embodiment, referring to fig. 3 and 5, the support assembly 3 may further include a sealing member 34, where the sealing member 34 may be a sealing ring, and the sealing member 34 is disposed between an outer periphery of the support block 31 and an inner peripheral wall of the first groove 321 of the support base 32, and the sealing member 34 may ensure that the support block 31 and the support base 32 form a sealed cavity, prevent gas in the first groove 321 from leaking and maintain a certain air pressure, and the air pressure may be converted into a thrust force on the support block 31, so that the support block 31 has a force applied to the rotation shaft 2 in a direction opposite to the gravity direction. Specifically, the outer circumference of the support block 31 may be provided with a third groove 313, and the depth of the third groove 313 is preferably less than or equal to the thickness of the sealing member 34 such that at least a portion of the sealing member 34 protrudes from the third groove 313. The inner peripheral wall of the first groove 321 may also be provided with a fourth groove (not shown) having a depth preferably less than or equal to the thickness of the seal 34 so that at least part of the seal 34 protrudes from the fourth groove.
Preferably, referring to fig. 1and 2, the pre-coating apparatus 100 may further include a pressure regulating valve 4, where the pressure regulating valve 4 is configured to regulate the air pressure value in the first groove 321, so as to control the amount of the force applied by the support assembly 3 to the rotating shaft 2 in the direction opposite to the gravity direction. The pressure regulating valve 4 not only can control the magnitude of the acting force of the support assembly 3 applied to the rotating shaft 2 in the direction of the back gravity so as to ensure that the rotating shaft 2 receives enough supporting force to reduce or avoid bending deformation of the rotating shaft 2 and ensure straightness of the rotating shaft 2, but also can keep the air pressure in the first groove 321 stable, so that the acting force of the support assembly 3 applied to the rotating shaft 2 in the direction of the back gravity keeps stable, and the straightness of the rotating shaft 2 always keeps consistent, namely, the distance between the rotating shaft 2 and the coating head 200 always keeps consistent in the rotating process, and the pre-coating effect of the coating head 200 on the rotating shaft 2 can be kept consistent, so that the coating uniformity of the coating head 200 on a substrate is improved, and the photoelectric conversion efficiency of the perovskite solar cell is improved.
While embodiments of the present invention have been shown and described, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that changes, modifications, substitutions and alterations may be made therein by those of ordinary skill in the art without departing from the spirit and scope of the invention, all such changes being within the scope of the appended claims.
Claims (10)
1. A pre-coating device, comprising:
A mounting bracket;
A rotating shaft rotatably provided to the mounting bracket, the rotating shaft being for attaching a coating liquid ejected from a coating head;
The support assembly is arranged below the rotating shaft and comprises a support block and a support base, a first groove is formed in the support base, the support block is arranged in the first groove, the first groove is connected with the air supply device, and the air supply device inflates in the first groove so that the support block applies acting force back to the rotating shaft in the gravity direction.
2. The pre-coating device according to claim 1, wherein the support assembly further comprises a vent fitting in communication with the first recess, the vent fitting being adapted to connect with the air supply and to inflate into the first recess.
3. The precoating apparatus according to claim 2, wherein a surface of the support block facing the rotation shaft is an arc-shaped support surface smaller than a semicircle, and after the arc-shaped support surface of the support block contacts the rotation shaft, the arc-shaped support surface of the support block is spread and matched with a surface shape of the rotation shaft to increase a contact area of the support block with the rotation shaft.
4. The precoating apparatus according to claim 2, wherein the support block has a support body and a support portion provided at a side of the support body facing the rotation shaft, the support portion having a circular arc-shaped support surface smaller than a semicircle on a side facing the rotation shaft to increase a contact area between the support portion and the rotation shaft.
5. The precoating apparatus according to claim 4, wherein the supporting portion comprises a first supporting portion and a second supporting portion respectively provided on both sides of the supporting body, the first supporting portion and the second supporting portion being provided at an interval and protruding from the supporting body so as to separate the rotation shaft from the supporting body; and/or the number of the groups of groups,
The first support portion and the second support portion are each made of an elastic material.
6. The pre-coating device according to claim 2, wherein at least part of the support blocks have an outer diameter smaller than or equal to the aperture of the first groove; and/or the number of the groups of groups,
The support assembly further includes a seal disposed between an outer periphery of the support block and an inner peripheral wall of the first recess of the support base.
7. The pre-coating device according to claim 2, characterized in that the side of the support block facing away from the rotation axis is provided with one or more second grooves, which second grooves communicate with the first grooves.
8. The pre-coating apparatus according to claim 2, further comprising a pressure regulating valve for regulating the air pressure value in the first groove to control the amount of force applied by the support assembly against the rotating shaft against the direction of gravity.
9. The pre-coating device according to claim 1, wherein the number of support members is one or more, and when the number of support members is one, the support members are disposed at an intermediate position below the rotation axis; when the number of the supporting components is multiple, the supporting components are uniformly arranged below the rotating shaft at intervals along the axial direction of the rotating shaft.
10. The precoating apparatus according to claim 1, wherein said mounting bracket comprises a first support member and a second support member respectively provided at both ends of said rotary shaft, said first support member and said second support member being respectively for supporting both ends of said rotary shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410410779.8A CN118002398B (en) | 2024-04-08 | 2024-04-08 | Precoating device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101480341B1 (en) * | 2013-09-13 | 2015-01-08 | 김근영 | Apparatus for coating molten metal |
| CN210193984U (en) * | 2019-06-25 | 2020-03-27 | 苏州长飞精密机械有限公司 | Clamping mechanism for thermal spraying of long shaft piece |
| CN210411342U (en) * | 2020-02-28 | 2020-04-28 | 四川博宥印务有限责任公司 | Adhesive sticker coating mechanism |
| CN211106360U (en) * | 2019-10-25 | 2020-07-28 | 苏州迈科电器有限公司 | Thermal printer prints rubber roll bearing structure |
| CN115195310A (en) * | 2022-08-19 | 2022-10-18 | 郑州新世纪数码科技股份有限公司 | Flag machine paper pressing system capable of lifting stably |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101480341B1 (en) * | 2013-09-13 | 2015-01-08 | 김근영 | Apparatus for coating molten metal |
| CN210193984U (en) * | 2019-06-25 | 2020-03-27 | 苏州长飞精密机械有限公司 | Clamping mechanism for thermal spraying of long shaft piece |
| CN211106360U (en) * | 2019-10-25 | 2020-07-28 | 苏州迈科电器有限公司 | Thermal printer prints rubber roll bearing structure |
| CN210411342U (en) * | 2020-02-28 | 2020-04-28 | 四川博宥印务有限责任公司 | Adhesive sticker coating mechanism |
| CN115195310A (en) * | 2022-08-19 | 2022-10-18 | 郑州新世纪数码科技股份有限公司 | Flag machine paper pressing system capable of lifting stably |
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| CN118002398B (en) | 2024-06-25 |
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