CN221086172U - Knife coating device capable of continuously supplying liquid - Google Patents
Knife coating device capable of continuously supplying liquid Download PDFInfo
- Publication number
- CN221086172U CN221086172U CN202322919079.5U CN202322919079U CN221086172U CN 221086172 U CN221086172 U CN 221086172U CN 202322919079 U CN202322919079 U CN 202322919079U CN 221086172 U CN221086172 U CN 221086172U
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- liquid
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- feed liquor
- blade
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- 239000007788 liquid Substances 0.000 title claims abstract description 126
- 238000010345 tape casting Methods 0.000 title claims description 9
- 238000000576 coating method Methods 0.000 claims description 44
- 239000011248 coating agent Substances 0.000 claims description 37
- 230000007704 transition Effects 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
Abstract
The utility model discloses a doctor-blade device capable of continuously supplying liquid, which comprises a doctor plate and a liquid inlet groove plate arranged on one side of the doctor plate, wherein the tail end of the doctor plate is provided with a cutting edge, one side of the liquid inlet groove plate, which is close to the doctor plate, is provided with a liquid groove, the top of the liquid inlet groove plate is provided with at least one liquid inlet channel communicated with the liquid groove, a gap is reserved between the doctor plate and the liquid inlet groove plate as a liquid supply channel, and the tail end of the liquid supply channel is provided with a liquid outlet, and the liquid flows out from the liquid outlet to the cutting edge along the doctor plate.
Description
Technical Field
The utility model belongs to the technical field of coating, and discloses a doctor blade device capable of continuously supplying liquid.
Background
The application of modern coating technology fields such as slit coating, knife coating, micro-concave coating methods and the like presents a vigorous and ubiquitously flowering development trend along with the development of new materials and new technologies. In terms of high-precision coating technology, the slit coating is most widely applied, and accounts for more than 70% of the high-end coating market; however, in the case of high viscosity slurry and thicker film thickness (dry film > 20 um), the doctor blade coating has larger cost advantage and operation convenience advantage for the case of not very high thickness uniformity, and as a result, the doctor blade coating mode has larger competitiveness and wider application prospect in the preparation process of the functional layer.
Coating apparatuses are classified into a roll-to-roll coating apparatus and a flat coating apparatus according to the type of a coated substrate. Roll-to-roll coating equipment typically predominates in flexible substrate coating such as PET, PI, proton exchange membrane, paper, and the like; the flat coating equipment mainly comprises hard board base materials such as glass, silicon chips, PVC boards and the like.
For the roll-to-roll coating equipment, the scraper mounting mode of scraper coating can be mounted in multiple angles and multiple directions according to different liquid supply modes, the mode is flexible, and continuous liquid supply and coating can be realized. However, in the case of flat-type coating apparatuses, blade coating is generally carried out only in a vertically downward manner, which causes problems, particularly with respect to the liquid supply during blade coating. In the current stage, the liquid supply of the flat coating equipment is generally realized by filling or liquid-supplying pump filling the coating liquid by using a manual injector, spreading the coating liquid in front of a scraper, then starting the scraper to scrape, and enabling the liquid supply to be impossible in the scraping process. The defect in this way is less pronounced for smaller blade-coated substrates, but if the blade-coated size is too large, the problem of insufficient coating fluid occurs further toward the end of the blade-coating.
Disclosure of utility model
In order to solve the problems, the utility model provides a doctor blade device capable of continuously supplying liquid, a group of liquid inlet groove plates are arranged on a doctor blade, so that continuous supply of coating solution can be realized in a vertical coating state, the amount of liquid supply is controlled by adjusting the gap between the liquid inlet groove plates and the doctor blade plate, and the pump can be connected with the structure to ensure quantitative and continuous liquid supply.
The technical scheme provided by the utility model is as follows:
The utility model provides a doctor-blading device that can supply liquid in succession, includes the scraper plate, sets up the feed liquor frid in scraper plate one side, and the scraper plate end has the cutting edge, and the feed liquor frid is opened to one side that the feed liquor frid is close to the scraper plate has the cistern, and the feed liquor channel that has at least one and cistern intercommunication is opened at feed liquor frid top, leaves the gap between scraper plate and the feed liquor frid and as the feed liquor channel, and the end of feed liquor channel has the liquid outlet, and solution flows along the scraper plate to cutting edge department from the liquid outlet outflow.
In some embodiments, a shim is provided between the doctor plate and the sump plate, the shim being located above the sump.
In some embodiments, the shim has a thickness of 50 μm to 9000 μm.
In some embodiments, the cross-section of the fluid bath is semi-circular or droplet-type.
In some embodiments, the liquid inlet channel comprises a liquid inlet and a connecting channel, a transition part is communicated between the liquid inlet and the connecting channel, and the transition part is in a horn shape with a big upper part and a small lower part.
In some embodiments, the liquid outlet is located higher than the blade.
In some embodiments, the distance between the liquid outlet and the blade is 2mm-10mm
In some embodiments, the liquid baffle plates are arranged at the bottoms of the two sides of the liquid inlet groove plate, and one side of the liquid baffle plate is clung to the scraper plate.
In summary, the beneficial effects of the utility model are as follows:
(1) The utility model can realize continuous supply of coating solution in a vertical coating state by providing the scraper with a group of liquid inlet groove plates, simultaneously avoid the problem of uneven coating thickness caused by a plurality of liquid shortage at the back of the front liquid in the process of scraping, and can also connect the pump with the structure by adjusting the gap between the liquid inlet groove plates and the scraper plate for supplying liquid to control the quantity of the liquid to be supplied, thereby ensuring quantitative and continuous liquid supply.
(2) According to the utility model, by controlling the distance between the liquid outlet of the liquid inlet tank plate and the scraper blade, the solvent volatilization caused by too far after liquid outlet is avoided, and the stroke interference between the liquid outlet of the liquid inlet tank plate and the scraper blade is prevented.
(3) The liquid baffle plates are arranged on two sides of the bottom of the liquid inlet groove plate and can be used for preventing the solution from diffusing to two sides in the blade coating process, so that the accuracy of the coating boundary is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is a schematic diagram of a structure of a liquid inlet tank according to the present utility model;
FIG. 4 is a schematic diagram of a cross-sectional structure of a liquid inlet channel according to the present utility model.
The reference numerals are as follows:
1. A doctor plate; 2. a liquid inlet groove plate; 3. a liquid tank; 4. a liquid inlet channel; 5. a liquid supply channel; 6. a liquid outlet; 7. a blade; 8. a shim; 9. a liquid baffle; 41. a liquid inlet; 42. a connection channel; 43. a transition portion.
Detailed Description
The present utility model will be further described in detail with reference to the following examples and drawings for the purpose of enhancing the understanding of the present utility model, which examples are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.
As shown in fig. 1-4, a doctor-blade device capable of continuously supplying liquid comprises a doctor plate 1 and a liquid inlet groove plate 2 arranged on one side of the doctor plate 1, wherein the tail end of the doctor plate 1 is provided with a cutting edge 7, one side, close to the doctor plate 1, of the liquid inlet groove plate 2 is provided with a liquid groove 3, the top of the liquid inlet groove plate 2 is provided with at least one liquid inlet channel 4 communicated with the liquid groove 3, a gap is reserved between the doctor plate 1 and the liquid inlet groove plate 2 to serve as a liquid supply channel 5, the tail end of the liquid supply channel 5 is provided with a liquid outlet 6, and the liquid flows out from the liquid outlet 6 along the doctor plate 1 to the cutting edge 7.
Specifically, in this embodiment, a gap is left between the scraper plate 1 and the liquid inlet groove plate 2 and the scraper plate is fixed by bolts, the blade 7 at the tail end of the scraper plate 1 is used for coating, when the scraper is used for coating, a solution enters the liquid inlet groove plate 2 from the liquid inlet channel 4 and flows into the liquid groove 3 and flows out from the liquid outlet 6, when the solution flows to the blade 7, the blade 7 is used for coating on the surface of a substrate, and in the coating process, the blade coating can be completed by continuously and stably supplementing the solution, and meanwhile, the problem that the front liquid is deficient in the rear liquid in the scraping process is avoided, so that the thickness of the coating is uneven.
Further, referring to fig. 2, a gap control sheet 8 is disposed between the doctor plate 1 and the liquid inlet groove plate 2, and the gap control sheet 8 is located above the liquid groove 3.
The thickness of the control gap piece 8 is the width of the liquid supply channel 5, the control gap piece 8 with proper thickness is selected according to the coating process, the thickness of the control gap piece 8 is controlled to be 50-9000 mu m by the general process, the stable coating process is ensured, the control gap piece 8 is arranged above the liquid tank 3, the solution can be prevented from overflowing from the surface of the device above the liquid tank 3, and the waste of the solution is reduced.
In a preferred embodiment, the cross section of the liquid tank 3 is semicircular or droplet type, the semicircular or droplet type liquid tank 3 can ensure that the solution can completely flow into the liquid supply channel 5 under the action of gravity, and the solution can not remain in the liquid tank 3 while ensuring uniform outflow, and of course, other embodiments are not limited to semicircular or droplet type liquid tanks, and other shapes capable of ensuring that the solution can completely flow downwards under the action of gravity, such as inverted V type liquid tanks and the like.
Further, referring to fig. 4, the liquid inlet channel 4 includes a liquid inlet 41 and a connecting channel 42, a transition portion 43 is communicated between the liquid inlet 41 and the connecting channel 42, and the transition portion 43 is in a horn shape with a large top and a small bottom.
Through setting up transition portion 43, and transition portion 43 is loudspeaker form, and the solution that gets into feed liquor passageway 4 can stop temporarily in transition portion 43, and rethread connecting channel 42 flows into in the cistern 3 evenly, has guaranteed the degree of consistency of coating, of course, according to actual demand, cistern 3 also can direct connection funnel or the direct feed of feed pump.
As a further preferred embodiment, the position of the outlet 6 is higher than the position of the blade 7.
Through keeping certain distance between control liquid outlet 6 and the cutting edge 7, the distance between liquid outlet 6 and the cutting edge 7 in general technology is 2mm-10mm, can prevent to advance stroke interference between liquid frid 2 bottom and the cutting edge 7 in the coating process, and the distance should not be too big simultaneously, guarantees to be unlikely to the distance too far away and appear solvent volatilize after the liquid outlet, and the distance between liquid outlet 6 and the cutting edge 7 can carry out the fine adjustment through oval fixed orifices's form.
Further, the bottoms of the two sides of the liquid inlet groove plate 2 are respectively provided with a liquid baffle plate 9, and one side of the liquid baffle plate 9 is clung to the scraper plate 1.
The liquid baffle 9 is fixedly arranged on two sides of the bottom of the liquid inlet groove plate 2 through bolts and can be used for blocking the solution from diffusing to two sides in the blade coating process, so that the accuracy of the coating boundary is ensured.
It should be noted that, in the drawings or the text of the specification, implementations not shown or described are all forms known to those of ordinary skill in the art, and not described in detail. Furthermore, the above definitions of the elements and methods are not limited to the specific structures, shapes or modes mentioned in the embodiments.
It should also be noted that examples of parameters that include particular values may be provided herein, but that these parameters need not be exactly equal to the corresponding values, but may approximate the corresponding values within acceptable error margins or design constraints. The directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., are merely directions with reference to the drawings, and are not intended to limit the scope of the present application.
While the foregoing description illustrates and describes the preferred embodiments of the present utility model, as noted above, it is to be understood that the utility model is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (8)
1. The utility model provides a doctor-blading device that can supply liquid in succession, its characterized in that includes scraper plate (1), sets up feed liquor frid (2) of scraper plate (1) one side, scraper plate (1) end has cutting edge (7), feed liquor frid (2) are close to one side of scraper plate (1) is opened there is cistern (3), feed liquor frid (2) top open have at least one with feed liquor passageway (4) of cistern (3) intercommunication, scraper plate (1) with leave the gap between feed liquor frid (2) and as feed liquor passageway (5), the end of feed liquor passageway (5) has liquid outlet (6), solution follow liquid outlet (6) outflow edge scraper plate (1) flow to cutting edge (7) department.
2. A continuously liquid-fed knife coating device according to claim 1, characterized in that a control gap piece (8) is arranged between the doctor plate (1) and the liquid-inlet trough plate (2), the control gap piece (8) being located above the liquid trough (3).
3. A continuously liquid-feedable blade coating device according to claim 2, characterized in that the thickness of the control gap piece (8) is 50 μm-9000 μm.
4. A continuously liquid-fed knife coating device according to claim 3, characterized in that the cross section of the liquid bath (3) is semi-circular or liquid droplet.
5. The continuous liquid supply doctor blade device as claimed in claim 4, wherein the liquid inlet channel (4) comprises a liquid inlet (41) and a connecting channel (42), a transition part (43) is communicated between the liquid inlet (41) and the connecting channel (42), and the transition part (43) is in a horn shape with a big top and a small bottom.
6. A continuously liquid-fed knife coating device according to claim 1, characterized in that the liquid outlet (6) is located higher than the blade (7).
7. A continuously liquid-fed knife coating device according to claim 6, characterized in that the distance between the liquid outlet (6) and the blade (7) is 2-10 mm.
8. The doctor blade device capable of continuously supplying liquid according to claim 5, wherein the bottoms of the two sides of the liquid inlet groove plate (2) are respectively provided with a liquid baffle plate (9), and one side of the liquid baffle plate (9) is tightly attached to the doctor blade plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322919079.5U CN221086172U (en) | 2023-10-30 | 2023-10-30 | Knife coating device capable of continuously supplying liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322919079.5U CN221086172U (en) | 2023-10-30 | 2023-10-30 | Knife coating device capable of continuously supplying liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221086172U true CN221086172U (en) | 2024-06-07 |
Family
ID=91311866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322919079.5U Active CN221086172U (en) | 2023-10-30 | 2023-10-30 | Knife coating device capable of continuously supplying liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221086172U (en) |
-
2023
- 2023-10-30 CN CN202322919079.5U patent/CN221086172U/en active Active
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