CN115283185A - Bidirectional closed type double-cavity pressure feeding and coating mechanism - Google Patents
Bidirectional closed type double-cavity pressure feeding and coating mechanism Download PDFInfo
- Publication number
- CN115283185A CN115283185A CN202210780481.7A CN202210780481A CN115283185A CN 115283185 A CN115283185 A CN 115283185A CN 202210780481 A CN202210780481 A CN 202210780481A CN 115283185 A CN115283185 A CN 115283185A
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- coating
- cavity
- inner cavity
- roll
- inner chamber
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- 238000000576 coating method Methods 0.000 title claims abstract description 177
- 239000011248 coating agent Substances 0.000 title claims abstract description 166
- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 230000002457 bidirectional effect Effects 0.000 title abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 210000005056 cell body Anatomy 0.000 claims 5
- 230000000149 penetrating effect Effects 0.000 abstract description 6
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- 238000007756 gravure coating Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
Landscapes
- Coating Apparatus (AREA)
Abstract
The invention discloses a bidirectional closed type double-cavity pressure feeding coating mechanism which comprises a groove body, a coating roller and a feeding pressurizing device, wherein the middle part of the groove body, which is provided with an inner cavity groove body, is provided with a first outer cavity and a second outer cavity at two sides of the inner cavity, the coating roller is rotatably arranged above the inner cavity, the lower surface of the coating roller is close to an opening of the inner cavity, the bottom of the groove body is provided with a filling channel penetrating through the inner cavity, the side wall of the groove body is provided with an overflow channel penetrating through the first outer cavity or the second outer cavity, the feeding pressurizing device is respectively connected with the filling channel and the overflow channel with a filling pipeline and an overflow pipeline, and coating liquid is pressurized and conveyed into the inner cavity through the feeding pressurizing device so as to fill the lower surface of the coating roller with the coating liquid in the inner cavity. The invention adopts a closed double-cavity overflow type to fill the coating liquid, so that the surface of the coating roller is filled more fully and saturated, the filling pressure is stable, the bubbles are greatly reduced, and the apparent quality of the coating is better.
Description
Technical Field
The invention relates to the technical field of gravure coating equipment, in particular to a bidirectional closed type double-cavity pressure feeding coating mechanism.
Background
Gravure coating is a coating method designed by applying the principle of gravure offset printing, and generally comprises two forms of forward gravure coating and reverse gravure coating, wherein various concave reticulate patterns are engraved on the surface of a gravure plate, and a certain amount of coating can be contained. The existing coating roller filling coating mode on the market at present has the following defects: 1. the filling of the dots of the coating roller is carried out by soaking under normal pressure, the dots are easily not filled when a high-viscosity coating is used or a high-speed coating is used, so that the coating apparent quality is poor, the coating roller rotates in a trough at a high speed, the coating liquid is continuously stirred to generate a large amount of bubbles, the bubbles can seriously cause the coating apparent quality, and the whirl coating can also cause the difficulty in cleaning equipment; 2. because a certain space and air exist in the material groove, when the coating liquid is coated at a high speed, airflow impacts the edge of the scraper due to continuous rolling of the coating liquid in the groove to influence the normal work of the scraper, and liquid leakage and poor coating apparent quality are caused; 3. when the scraper is integrated with the feeding chamber, the scraper blade is very easy to damage; 4. the existing coating equipment can only complete a single coating mode, namely one equipment can only realize one coating mode such as forward coating or reverse coating, and the like, and cannot meet the requirement that one equipment has the coating modes such as forward coating, reverse coating and the like; 5. the coating roll has a large surface exposed area, and the coating liquid on the surface is greatly volatilized.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a bidirectional closed double-cavity pressure feeding coating mechanism, wherein a closed double-cavity overflow type coating liquid filling mode is adopted, so that the surface filling saturation degree of a coating roller is better, the filling pressure is more stable, bubbles are greatly reduced, the apparent coating quality is better, and the mechanism is suitable for various coating processes.
In order to achieve the purpose, the invention discloses a bidirectional closed type double-cavity pressure feeding coating mechanism which comprises a groove body, a coating roller and a feeding pressurizing device, wherein an inner cavity is formed in the middle of the groove body, a first outer cavity and a second outer cavity are formed in the middle of the groove body and positioned on two sides of the inner cavity, the coating roller is rotatably arranged above the inner cavity, the lower surface of the coating roller is close to an opening of the inner cavity, so that a closed space is formed inside the inner cavity, a filling channel penetrating through the inner cavity is formed in the bottom of the groove body, an overflow channel penetrating through the first outer cavity or the second outer cavity is formed in the side wall of the groove body, the feeding pressurizing device is respectively connected with the filling channel and the overflow channel, a filling pipeline and an overflow pipeline are connected with the feeding pressurizing device, coating liquid is input into the inner cavity through pressurization of the feeding pressurizing device, and the coating liquid in the inner cavity is used for filling the lower surface of the coating roller.
Preferably, the inner edge of the opening of the inner cavity is provided with a first arc-shaped surface and a second arc-shaped surface which are matched with the coating roller, and a gap is formed between the first arc-shaped surface and the coating roller.
Preferably, the coating roll further comprises a pair of scrapers, the tops of the two sides of the groove body are symmetrically provided with a scraper clamping seat respectively, the scrapers are arranged on the scraper clamping seats respectively, and the scrapers are close to the surface of the coating roll.
Preferably, the height of the doctor blade is higher than the center point of the coating roll.
Preferably, a first side plate and a second side plate are respectively arranged on two sides of the trough body, the end parts of the coating roll are respectively and rotatably arranged on the first side plate and the second side plate, and the coating roll is driven to rotate through a rotary driving device.
Preferably, the surface of the coating roller has a plurality of concave grids.
Compared with the prior art, the invention has the beneficial effects that:
the coating roller is coated by adopting a closed double-cavity overflow mode, the upper opening of the inner cavity is close to the coating roller, so that a closed space is formed in the inner cavity, the pressure in the inner cavity is increased, the air pressure in the inner cavity is gradually increased along with the capacity of the coating liquid during feeding, the coating liquid can be fully filled on the surface of the coating roller under the action of the pressure, the surface coating liquid is more uniform, and bubbles generated by the coating liquid under continuous stirring are greatly reduced.
The inner cavity adopts a slit quantitative overflow method, so that after the coating liquid in the inner cavity reaches a certain pressure, the coating liquid can overflow from a gap between the coating roller and the inner cavity, thereby ensuring that the pressure in the inner cavity keeps constant, ensuring that the coating liquid is more stably filled, greatly improving the apparent quality of coating, and because the coating roller and the first and second arc-shaped surfaces are provided with the gap, the rotating direction of the coating roller can be changed according to the requirement of a coating process, avoiding the condition that the coating liquid in the inner cavity flows back because of the rotating direction of the coating roller when overflowing, thereby being suitable for different coating modes such as forward coating, reverse coating and the like, not being limited to the coating mode in a single direction, and greatly reducing the use cost of equipment.
The overflowed coating liquid flows into the first outer cavity and the second outer cavity, is collected through the overflow cavity and is intensively discharged into the feeding pressurization device, and therefore the circulating feeding of the coating liquid is achieved.
The height of the scraper is higher than the center of the coating roller, so that the impact of airflow on the blade of the scraper is reduced, the scraper does not bear the pressure caused by the coating roller, the service life of the scraper is greatly prolonged, and the exposed area of the surface of the coating roller is greatly reduced, so that the volatilization of the coating liquid on the surface of the coating roller can be reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the overall structure of the present invention;
FIG. 3 is a schematic view of the coating roll in the state of being coated;
fig. 4 is a schematic view of the reverse coating state of the coating roll.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 2, the bidirectional closed type double-cavity pressure feeding coating mechanism comprises a tank body 1, a coating roller 2, a feeding pressurizing device 3 and a pair of scrapers 6 and 6A.
Referring to fig. 2, the middle part of the tank body 1 is provided with an inner cavity 4, the middle part of the tank body 1 is provided with a first outer cavity 5 and a second outer cavity 5A at two sides of the inner cavity 4, the coating roller 2 is rotatably arranged above the inner cavity 4, the lower surface of the coating roller 2 is close to the opening of the inner cavity 4, the bottom of the tank body 1 is provided with a filling channel 42 penetrating through the inner cavity 4, the side wall of the tank body 1 is provided with an overflow channel 51 penetrating through the first outer cavity 5 or the second outer cavity 5A, the feeding pressurizing device 3 is respectively connected with the filling channel 42 and the overflow channel 51 with a filling pipeline 31 and an overflow pipeline 32, in this embodiment, a double-screw pump is preferably adopted as the feeding pressurizing device, and the coating liquid is input into the inner cavity 4 through the feeding pressurizing device 3 to prepare for filling the coating roller.
Referring to fig. 2 and 3, the surface of the coating roller 2 has a plurality of concave grids, and the grids are pressed against the coating roller 2 to form linear pressure during coating, so that the internal pressure of the cavity 4 is increased, the air pressure in the cavity 4 is gradually increased along with the capacity of the coating liquid, and therefore the coating liquid in the cavity 4 is fully filled on the lower surface of the coating roller 2 under the action of pressure, so that the surface of the coating roller 2 is pressurized and filled while sealed feeding is realized, the coating liquid on the surface of the coating roller 2 is filled more uniformly and more saturated during the coating process, bubbles generated during the coating process by the coating liquid in the cavity 4 are greatly reduced, the apparent quality of the coating layer is greatly improved, and the feeding and pressurizing device can adjust the flow and pressure of the coating liquid according to the working requirements, ensure stable feeding of the coating liquid, and is suitable for coating work of different products.
The edge has the first arcwall face with coating roll 2 assorted in the opening of inner chamber 4, the second arcwall face, gap has between first arcwall face and the coating roll 2, when inner chamber 4 internal pressure was too big, the inside coating liquid of inner chamber 4 then overflows to first outer chamber 5 respectively through the gap, in the second outer chamber 5A, thereby realize the ration overflow, make the pressure in the inner chamber 4 invariable all the time, coating apparent mass has been improved greatly, compare in traditional ordinary pressure of soaking and fill, thereby use or high-speed coating when using at high viscosity coating liquid and fill easily not full, cause coating apparent mass not good.
Referring to fig. 3 and 4, compared to the conventional coating process, the conventional coating apparatus can only be used in a single coating process, that is, one apparatus can only implement one coating method, such as forward coating or reverse coating, and cannot satisfy the requirement that one apparatus can perform the coating methods, such as forward coating and reverse coating. And this application because there is certain gap between coating roll 2 and first, the second arcwall face, consequently can change coating roll 2's direction of rotation according to coating process's demand, because of the circumstances that coating roll 2 direction of rotation takes place the backward flow when avoiding coating liquid overflow in the inner chamber 4 to be applicable to in the same direction and scribble, the reverse different coating modes such as scribbling, do not limit single direction's coating process, thereby the use cost of the equipment that significantly reduces.
Referring to fig. 2, the coating liquid in the first and second outer cavities 5, 5A flows into the feeding and pressurizing device 3 through the overflow pipe 32 under the action of the feeding and pressurizing device 3, and enters the feeding inner cavity 4 through the feeding and pressurizing device 3, so that the coating liquid is recycled, and the production cost is greatly reduced.
The top of the two sides of the tank body 1 is symmetrically provided with scraper clamping seats 61 and 61A respectively, the scrapers 6 and 6A are arranged on the scraper clamping seats 61 and 61A respectively, the scrapers 6 and 6A are close to the surface of the coating roller 2, the coating roller 2 scrapes redundant coating liquid on the surface of the coating roller 2 by using the scrapers 6 and 6A in the rotating process, so that the coating liquid on the surface of the coating roller 2 is more uniform, the coating liquid can be uniformly coated on a substrate, the surface appearance of the substrate is greatly improved, the heights of the scrapers 6 and 6A are higher than the central point of the coating roller 2, the exposed area on the surface of the coating roller 2 is greatly reduced, the volatilization of the coating liquid on the surface of the coating roller 2 can be reduced, the cutting edges of the scrapers 6 and 6A are not influenced by air flow, and the service lives of the scrapers 6 and 6A are greatly prolonged.
Compared with the traditional coating equipment in which the position of the scraper is arranged on the lower surface of the coating roller, the coating roller 2 continuously rolls to cause impact of airflow on the edge of the scraper during high-speed coating, the mode greatly increases the pressure of the scraper, so that the edge of the scraper is easy to break, the normal work of the scraper is influenced, liquid leakage and poor coating apparent quality are caused, and meanwhile, the coating roller can cause whirl coating under high-speed rotation, so that the equipment is difficult to clean; and the surface of the coating roll 2 is exposed in a large area, so that the coating liquid is volatilized greatly, which causes the change of the components of the coating liquid, thereby affecting the coating quality, and the volatile smell affects the environmental quality.
Referring to fig. 1 and 2, a first side plate and a second side plate are respectively arranged on two sides of a tank body 1, end portions of a coating roll 2 are respectively rotatably arranged on the first side plate and the second side plate, so that an inner cavity 4 in the tank body 1 and first outer cavities 5 and second outer cavities 5A form a closed space, a rotary driving device is fixedly arranged outside the tank body 1, in the embodiment, a motor is preferably adopted as the rotary driving device, the coating roll 2 is driven to rotate through the rotary driving device, and the coating roll can be controlled to rotate forward and backward according to forward coating and reverse coating production processes.
It should be understood that the above-mentioned embodiments are merely illustrative of the technical concept and features of the present invention, and are not intended to limit the scope of the present invention, which is defined by the following claims.
Claims (6)
1. The utility model provides a two-way closed two-chamber pressure feed coating mechanism, characterized in that, includes cell body (1), coating roll (2), feed supercharging device (3), the middle part of cell body (1) has inner chamber (4), the middle part of cell body (1) in the both sides of inner chamber (4) have first exocoel (5), second exocoel (5A), coating roll (2) rotate set up in the top of inner chamber (4), just the lower surface of coating roll (2) is adjacent in the opening part of inner chamber (4), make the inside of inner chamber (4) forms the enclosure space, the bottom of cell body (1) has and runs through filling passageway (42) of inner chamber (4), the lateral wall of cell body (1) has and runs through overflow passageway (51) of first exocoel (5) or second exocoel (5A), feed supercharging device (3) respectively with filling passageway (42), overflow passageway (51) are connected with and fill pipeline (31), overflow pipeline (32), the coating liquid passes through feed supercharging device (3) pressurization input in the inner chamber (4), make coating roll (4) carry out the lower surface of filling to coating roll (2).
2. The coating mechanism of claim 1, wherein the inner edge of the opening of the inner cavity (4) has a first arc surface and a second arc surface matched with the coating roller (2), and a gap is formed between the first arc surface and the coating roller (2).
3. The coating mechanism of claim 1, further comprising a pair of scrapers (6, 6A), wherein the tops of both sides of the tank (1) are symmetrically provided with scraper clamping seats (61, 61A), the scrapers (6, 6A) are respectively arranged on the scraper clamping seats (61, 61A), and the scrapers (6, 6A) are close to the surface of the coating roll (2).
4. A bi-directional closed double chamber pressure feed applicator mechanism according to claim 3, characterized in that the height of the doctor blades (6, 6A) is higher than the centre point of the applicator roll (2).
5. The coating mechanism with two closed cavities and pressure feeding in two ways as claimed in claim 1, wherein a first side plate (11) and a second side plate (12) are respectively disposed on two sides of the trough body (1), the ends of the coating roll (2) are respectively rotatably disposed on the first side plate (11) and the second side plate (12), and the coating roll (2) is driven to rotate by a rotation driving device.
6. A bi-directional closed double chamber pressure feed applicator mechanism as claimed in claim 1 wherein the surface of the applicator roll (2) has a plurality of concave grids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210780481.7A CN115283185A (en) | 2022-07-01 | 2022-07-01 | Bidirectional closed type double-cavity pressure feeding and coating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210780481.7A CN115283185A (en) | 2022-07-01 | 2022-07-01 | Bidirectional closed type double-cavity pressure feeding and coating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115283185A true CN115283185A (en) | 2022-11-04 |
Family
ID=83821847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210780481.7A Pending CN115283185A (en) | 2022-07-01 | 2022-07-01 | Bidirectional closed type double-cavity pressure feeding and coating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115283185A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5633045A (en) * | 1995-08-31 | 1997-05-27 | Xerox Corporation | Apparatus and process for coating webs using a cylindrical applicator |
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| JP2010207721A (en) * | 2009-03-10 | 2010-09-24 | Toppan Printing Co Ltd | Gravure coater |
| JP2010284652A (en) * | 2010-08-26 | 2010-12-24 | Fujifilm Corp | Gravure coater and method of manufacturing flexible belt-like support |
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| JP2020075204A (en) * | 2018-11-06 | 2020-05-21 | デクセリアルズ株式会社 | Coating unit |
| CN210737224U (en) * | 2019-09-06 | 2020-06-12 | 东莞市金田纸业有限公司 | Grey board paper coating unit |
| CN211385586U (en) * | 2019-11-15 | 2020-09-01 | 江苏中关村嘉拓新能源设备有限公司 | Positive gravure roller structure of scribbling with contrary scribbling of lithium cell |
| CN211989487U (en) * | 2020-03-19 | 2020-11-24 | 东莞市鑫玺源新材料科技有限公司 | Coating liquid tank |
| CN213967390U (en) * | 2020-11-27 | 2021-08-17 | 常州斯威克光伏新材料有限公司 | Feeding system for gravure coating |
| CN219150563U (en) * | 2022-07-01 | 2023-06-09 | 汕头众联机械科技有限公司 | Two-way closed double-cavity pressure feed coating mechanism |
-
2022
- 2022-07-01 CN CN202210780481.7A patent/CN115283185A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5633045A (en) * | 1995-08-31 | 1997-05-27 | Xerox Corporation | Apparatus and process for coating webs using a cylindrical applicator |
| JP2001224995A (en) * | 2000-02-16 | 2001-08-21 | Okazaki Kikai Kogyo Kk | Side surface dipping type roll coater |
| JP2006026596A (en) * | 2004-07-21 | 2006-02-02 | Fuji Photo Film Co Ltd | Gravure coater |
| JP2010207721A (en) * | 2009-03-10 | 2010-09-24 | Toppan Printing Co Ltd | Gravure coater |
| JP2010284652A (en) * | 2010-08-26 | 2010-12-24 | Fujifilm Corp | Gravure coater and method of manufacturing flexible belt-like support |
| CN103328114A (en) * | 2010-10-26 | 2013-09-25 | 奥尔布里希有限责任公司 | Device for applying a free-flowing medium to a web |
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| JP2014124559A (en) * | 2012-12-25 | 2014-07-07 | Kobayashi Engineering Works Ltd | Gravure coating device |
| JP2014226637A (en) * | 2013-05-24 | 2014-12-08 | 富士機械工業株式会社 | Photogravure kiss coating apparatus |
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| CN210737224U (en) * | 2019-09-06 | 2020-06-12 | 东莞市金田纸业有限公司 | Grey board paper coating unit |
| CN211385586U (en) * | 2019-11-15 | 2020-09-01 | 江苏中关村嘉拓新能源设备有限公司 | Positive gravure roller structure of scribbling with contrary scribbling of lithium cell |
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