CN113649225B - Coating die head and coating equipment - Google Patents
Coating die head and coating equipment Download PDFInfo
- Publication number
- CN113649225B CN113649225B CN202111047598.6A CN202111047598A CN113649225B CN 113649225 B CN113649225 B CN 113649225B CN 202111047598 A CN202111047598 A CN 202111047598A CN 113649225 B CN113649225 B CN 113649225B
- Authority
- CN
- China
- Prior art keywords
- die head
- coating
- runner
- outlet
- auxiliary slit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
Landscapes
- Coating Apparatus (AREA)
Abstract
The invention relates to the technical field of coating die heads, and provides a coating die head and coating equipment, wherein the coating die head comprises: the device comprises an upper die head, a lower die head and a gasket arranged between the upper die head and the lower die head, wherein a main slit runner is formed between the upper die head and the lower die head; the auxiliary slit runner is arranged on the upper die head or the lower die head, and an inlet of the auxiliary slit runner and an inlet of the main slit runner are communicated with a feed inlet of the coating die head; and the adjusting mechanism is arranged on the upper die head or the lower die head and is suitable for adjusting the distance between the outlets of the auxiliary slit runners. The coating die head provided by the invention is provided with the auxiliary slit runner and the adjusting mechanism, when starting coating and debugging, the main slit runner can be blocked, so that slurry entering from the feed inlet of the coating die head flows out from the auxiliary slit runner, and the flowing slurry can be recycled because the flowing slurry can not be contacted with a foil, thereby avoiding waste and being beneficial to reducing the starting coating and debugging cost.
Description
Technical Field
The invention relates to the technical field of coating die heads, in particular to a coating die head and coating equipment.
Background
The extrusion coating technology is generally used in the lithium battery industry at present, and becomes a solid foundation for the development of the lithium battery industry; although extrusion coating technology is mature at present, there are a number of problems that need to be improved optimally;
in the initial coating stage of extrusion coating, a stable period exists, and is influenced by the environment, slurry and hysteresis factors of a material conveying and coating system, the stable time is from several minutes to more than ten minutes, so that the coating starting debugging is greatly influenced, particularly, during high-speed coating, a large amount of waste of the slurry and foil is caused, and the coating starting debugging cost is increased.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the coating equipment in the prior art has a stabilization period, so that a large amount of slurry and foil are wasted, and the start-up debugging cost is increased, thereby providing the coating die head and the coating equipment.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the present invention provides a coating die comprising: the device comprises an upper die head, a lower die head and a gasket arranged between the upper die head and the lower die head, wherein a main slit runner is formed between the upper die head and the lower die head; the auxiliary slit runner is arranged on the upper die head or the lower die head, and an inlet of the auxiliary slit runner and an inlet of the main slit runner are communicated with a feed inlet of the coating die head; and the adjusting mechanism is arranged on the upper die head or the lower die head and is suitable for adjusting the distance between the adjusting mechanism and the outlet of the secondary slit runner.
Further, the secondary slit runner opening is arranged in the length direction of the upper die head, and the length of the secondary slit runner is consistent with that of the main slit runner; the width of the auxiliary slit flow channel is consistent with that of the main slit flow channel; the height of the auxiliary slit flow passage is consistent with that of the main slit flow passage; the distance between the outlet of the auxiliary slit flow passage and the adjusting mechanism is equal to the distance between the outlet of the main slit flow passage and the foil on the back roll.
Further, the device also comprises a cover plate; a first groove is formed in the upper part of the upper die head, and an outlet of the auxiliary slit runner is located on the bottom of the first groove; the cover plate is arranged in the first groove, the connecting part of the adjusting mechanism is connected with the cover plate, and the action part of the adjusting mechanism faces to the outlet of the auxiliary slit flow passage.
Furthermore, one surface of the cover plate facing the secondary slit flow channel is provided with a second groove, a fluid cavity is formed in an area between the second groove and the upper die head, and the fluid cavity is communicated with the outside; the outlet of the auxiliary slit flow passage is communicated with the fluid cavity.
Further, the adjusting mechanism comprises an adjusting block and a driving piece; the adjusting block is positioned in the fluid cavity and above the outlet of the auxiliary slit flow channel, and the outlet of the auxiliary slit flow channel is positioned in the orthographic projection range of the adjusting block at the bottom of the first groove; one end of the driving piece is arranged on the cover plate, and the other end of the driving piece penetrates through the cover plate and is connected with the adjusting block.
Further, a plurality of adjustment mechanisms are arranged side by side along the secondary slit flow passage.
Furthermore, the buffer film is arranged on one surface of the adjusting block, which is back to the driving piece.
The coating die head further comprises a die head cavity body which is arranged on the lower die head, and an inlet of the die head cavity body is communicated with a feeding hole of the coating die head; the secondary slit runner and the main slit runner are communicated with the die cavity.
Further, the device also comprises a blocking piece which is suitable for blocking the outlet of the main slit flow passage.
The invention also provides coating equipment comprising the coating die head.
The technical scheme of the invention has the following advantages:
the coating die head provided by the invention is provided with the auxiliary slit runner and the adjusting mechanism, when starting coating and debugging, the main slit runner can be blocked, so that slurry entering from a feed inlet of the coating die head flows out from the auxiliary slit runner, and the flowing slurry can not be contacted with a foil material and can be recycled, so that waste is avoided; and continuously adjusting the distance between the coating die head and the outlet of the auxiliary slit flow channel by using the adjusting mechanism until the pressure in the coating die head, the temperature of the slurry and the viscosity are stable, closing the outlet of the auxiliary slit flow channel by using the adjusting mechanism, removing the blockage of the main slit flow channel, and then carrying out the next process. By the arrangement, the waste of slurry and foil in the stabilization period can be avoided, and the coating starting debugging cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of the overall construction of a coating die in an embodiment of the present invention;
FIG. 2 is a side view of a coating die in an embodiment of the present invention;
FIG. 3 is a cross-sectional view in one direction of a coating die in an embodiment of the present invention;
FIG. 4 is a cross-sectional view in another direction of a coating die in an embodiment of the present invention;
FIG. 5 is a schematic illustration of a cover plate in a coating die in an example of the present invention;
FIG. 6 is a schematic view of a lower die of a coating die in an example of the present invention;
fig. 7 is a schematic diagram of an adjustment mechanism in a coating die in an embodiment of the present invention.
Description of reference numerals:
1. an upper die head; 2. A lower die head; 3. A gasket;
4. a main slit flow passage; 5. A secondary slit flow passage; 6. A cover plate;
7. an adjustment mechanism; 8. A discharge outlet; 9. A drive member;
10. an adjusting block; 11. A buffer film; 12. A die cavity;
13. a runner cavity; 14. And (4) feeding a material inlet.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The present embodiment provides a coating die comprising: the device comprises an upper die head 1, a lower die head 2 and a gasket 3 arranged between the upper die head 1 and the lower die head 2, wherein a main slit runner 4 is formed between the upper die head 1 and the lower die head 2; the auxiliary slit runner 5 is arranged on the upper die head 1 or the lower die head 2, and the inlet of the auxiliary slit runner 5 and the inlet of the main slit runner 4 are communicated with the feed inlet 14 of the coating die head; and the adjusting mechanism 7 is arranged on the upper die head 1 or the lower die head 2 and is suitable for adjusting the distance between the adjusting mechanism and the outlet of the secondary slit runner 5.
Specifically, the position of the secondary slit flow passage 5 may be designed as needed, and it may be provided in the upper die 1 or the lower die 2. For example, the sub slit flow paths 5 are arranged in the vertical direction perpendicular to the main slit flow paths 4, and the size of the sub slit flow paths 5 can be made completely the same as the size of the main slit flow paths 4 in order to improve the simulation effect and reduce the error due to irrelevant variables.
The position of the adjusting mechanism 7 can be designed according to the position of the secondary slit flow passage 5, and the purpose is to adjust the distance between the adjusting mechanism and the outlet of the secondary slit flow passage 5 in the coating start and debugging stage, and to seal the outlet of the secondary slit flow passage 5 in the main coating stage.
The coating die head provided by the invention is provided with the auxiliary slit runner 5 and the adjusting mechanism 7, when coating and debugging are started, the main slit runner 4 can be blocked at first, so that slurry entering from the feed inlet 14 of the coating die head flows out from the auxiliary slit runner 5, and the flowing slurry can not be contacted with a foil and can be recycled so as to avoid waste; the distance between the adjusting mechanism 7 and the outlet of the auxiliary slit runner 5 is continuously adjusted until the pressure in the coating die head, the temperature and the viscosity of the slurry are stable, the adjusting mechanism 7 is used for closing the outlet of the auxiliary slit runner 5, the main slit runner 4 is not blocked, and then the next process is carried out. By the arrangement, the waste of slurry and foil in the stabilization period can be avoided, and the coating starting debugging cost is reduced.
In this embodiment, the auxiliary slit runner 5 is provided in the length direction of the upper die head 1, and the length of the auxiliary slit runner 5 is the same as that of the main slit runner 4; the width of the secondary slit runner 5 is consistent with that of the main slit runner 4; the height of the secondary slit runner 5 is consistent with that of the main slit runner 4; the distance between the outlet of the secondary slit flow channel 5 and the adjusting mechanism 7 is equal to the distance between the outlet of the primary slit flow channel 4 and the foil on the backing roll.
In this embodiment, the coating die further comprises a cover plate 6; the upper part of the upper die head 1 is provided with a first groove, and the outlet of the auxiliary slit runner 5 is positioned on the bottom of the first groove; the cover plate 6 can be mounted in the first groove through screws, and the top surface of the cover plate 6 can be flush with the upper die head 1. Wherein the length of the cover plate 6 may be less than that of the upper die 1. Wherein the connecting part of the adjusting mechanism can be connected with the cover plate 6, and the action part of the adjusting mechanism faces the outlet of the secondary slit runner 5. For example, the adjustment mechanism 7 comprises an adjustment block 10 and a drive 9; the adjusting block 10 is located in the fluid cavity 13 and is located right above the outlet of the secondary slit flow channel 5, the outlet of the secondary slit flow channel 5 is located in the orthographic projection range of the adjusting block 10 on the bottom of the first groove, and the size of the adjusting block 10 can be designed according to the size of the secondary slit flow channel 5. For example, a through hole may be drilled in the plate surface of the cover plate 6, and the driving member 9 may be inserted into the through hole. One end that driving piece 9 was planted in apron 6 can threaded connection with adjusting block 10, when rotating driving piece 9, can drive adjusting block 10 and rise or descend, and then adjust between the export of adjusting block 10 and vice slit runner 5, wherein, utilize this distance to simulate the export of main slit runner 4 and the distance between the backing roll, be favorable to the parameter of more accurate control thick liquids, improve the effect of debugging.
The driving member 9 may be a differential head assembly or a linear motor.
In this embodiment, a plurality of adjustment mechanisms are provided side by side along the sub slit flow passage 5. For example, there may be ten adjustment mechanisms 7, with ten adjustment mechanisms 7 being aligned in a row. When the flow regulating device is used, for example, at a position with high surface density, the outlet of the auxiliary slit flow passage 5 at the corresponding position can be opened, so that the flow of the outlet of the main slit flow passage 4 is reduced, and the aim of regulating the local flow is fulfilled.
In this embodiment, the coating die further includes a buffer film disposed on a side of the adjusting block 10 opposite to the driving member 9. For example, the buffer film 11 may be adhered to the bottom of the adjustment block 10, and the size of the buffer film 11 may be designed as desired. For example, the buffer film 11 may be a plastic film. So set up, can solve regulating block 10 and discontinuous have the problem of step sudden change, also can avoid regulating block 10 and vice slit runner 5 rigid contact simultaneously, be favorable to improving sealed effect.
In this embodiment, a second groove is formed on one surface of the cover plate 6 facing the auxiliary slit flow channel 5, a fluid cavity 13 is formed in an area between the second groove and the upper die head 1, and the fluid cavity 13 is communicated with the outside; the outlet of the sub slit flow passage 5 communicates with the fluid chamber 13. Wherein, can all set up the relief hole at two terminal surfaces of apron 6, the one end and the fluid cavity 13 intercommunication of this bin outlet 8, the other end can extend to the terminal surface edge of upper die head 1 and with external intercommunication all the time, the thick liquids that flow from the export of vice slit runner 5 can be followed this relief hole and flowed.
In this embodiment, the coating die further comprises a die cavity 12 disposed on the lower die 2, an inlet of the die cavity 12 being in communication with the feed port 14 of the coating die; the die head cavity 12 is communicated with the auxiliary slit runner; the die cavity 12 communicates with the main slit flow passage 4. By the arrangement, a certain pressure equalizing effect can be achieved, and the slurry entering from the feed inlet 14 of the coating die head is kept temporarily in the die cavity 12 and then enters the main slit flow channel 4 or the auxiliary slit flow channel 5, so that the pressure and the flow rate of the slurry are more stable and uniform.
In this embodiment, the coating die further comprises a blocking member adapted to block the outlet of the main slit flow passage 4. For example, the closure may be a foam tape.
The invention also provides a coating device which comprises the coating die head.
When the device is used, before coating and debugging, the outlet of the main slit flow passage is plugged by a foam adhesive tape, slurry flows in the auxiliary slit flow passage, and the gap between the adjusting block and the auxiliary slit flow passage is adjusted by the adjusting device to be consistent with the distance between the main slit flow passage and the back roll; the slurry flows into a discharge hole from the secondary slit flow passage and is discharged; after the parameters of the whole coating system are stabilized, opening the main slit flow channel, closing the auxiliary slit flow channel, and performing coating debugging; therefore, the time for stabilizing the system is greatly shortened, and the waste of slurry and foil during debugging is reduced.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A coating die, comprising:
the device comprises an upper die head, a lower die head and a gasket arranged between the upper die head and the lower die head, wherein a main slit runner is formed between the upper die head and the lower die head;
the auxiliary slit runner is arranged on the upper die head or the lower die head, and an inlet of the auxiliary slit runner and an inlet of the main slit runner are communicated with a feed inlet of the coating die head;
the adjusting mechanism is arranged on the upper die head or the lower die head and is suitable for adjusting the distance between the adjusting mechanism and the outlet of the secondary slit runner;
when starting coating and debugging, plugging the main slit runner to ensure that slurry entering from a feed inlet of the coating die head flows out of the auxiliary slit runner; and continuously adjusting the distance between the adjusting mechanism and the outlet of the auxiliary slit flow channel by the adjusting mechanism until the pressure in the coating die head, the temperature and the viscosity of the slurry are stable, closing the outlet of the auxiliary slit flow channel by the adjusting mechanism, removing the blockage of the main slit flow channel, and then carrying out the next process.
2. The coating die of claim 1,
the auxiliary slit runner is arranged in the length direction of the upper die head, and the length of the auxiliary slit runner is consistent with that of the main slit runner;
the width of the auxiliary slit flow channel is consistent with that of the main slit flow channel;
the height of the auxiliary slit flow passage is consistent with that of the main slit flow passage;
the distance between the outlet of the auxiliary slit flow passage and the adjusting mechanism is equal to the distance between the outlet of the main slit flow passage and the foil on the back roll.
3. The coating die of claim 2,
the device also comprises a cover plate;
a first groove is formed in the upper part of the upper die head, and an outlet of the auxiliary slit runner is located on the bottom of the first groove;
the cover plate is arranged in the first groove, the connecting part of the adjusting mechanism is connected with the cover plate, and the action part of the adjusting mechanism faces to the outlet of the auxiliary slit flow passage.
4. The coating die of claim 3,
a second groove is formed in one surface, facing the auxiliary slit flow channel, of the cover plate, a fluid cavity is formed in the area between the second groove and the upper die head, and the fluid cavity is communicated with the outside;
the outlet of the auxiliary slit flow passage is communicated with the fluid cavity.
5. The coating die of claim 4,
the adjusting mechanism comprises an adjusting block and a driving piece;
the adjusting block is positioned in the fluid cavity and above the outlet of the auxiliary slit flow channel, and the outlet of the auxiliary slit flow channel is positioned in the orthographic projection range of the adjusting block at the bottom of the first groove;
one end of the driving piece is arranged on the cover plate, and the other end of the driving piece penetrates through the cover plate and is connected with the adjusting block.
6. The coating die of claim 5,
a plurality of adjustment mechanisms are disposed side-by-side along the secondary slit flow passage.
7. The coating die of claim 5,
the buffer film is arranged on one surface of the adjusting block back to the driving piece.
8. The coating die of claim 2,
the die head cavity is arranged on the lower die head, and an inlet of the die head cavity is communicated with a feed inlet of the coating die head;
the auxiliary slit runner and the main slit runner are communicated with the die head cavity.
9. The coating die of claim 1,
and the plugging piece is suitable for plugging the outlet of the main slit flow passage.
10. A coating apparatus comprising a coating die according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111047598.6A CN113649225B (en) | 2021-09-07 | 2021-09-07 | Coating die head and coating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111047598.6A CN113649225B (en) | 2021-09-07 | 2021-09-07 | Coating die head and coating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113649225A CN113649225A (en) | 2021-11-16 |
| CN113649225B true CN113649225B (en) | 2022-10-04 |
Family
ID=78493637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111047598.6A Active CN113649225B (en) | 2021-09-07 | 2021-09-07 | Coating die head and coating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113649225B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5766990B2 (en) * | 2011-03-23 | 2015-08-19 | 東レエンジニアリング株式会社 | Coating device |
| CN202238514U (en) * | 2011-09-14 | 2012-05-30 | 深圳市赢合科技股份有限公司 | Coating die head of pole piece coating machine |
| JP6967477B2 (en) * | 2018-03-22 | 2021-11-17 | 東レ株式会社 | Applicator and air discharge method of applicator |
| CN209613410U (en) * | 2018-10-30 | 2019-11-12 | 深圳市曼恩斯特科技有限公司 | Coating head and apparatus for coating |
| CN209886095U (en) * | 2019-04-18 | 2020-01-03 | 昆山希盟自动化科技有限公司 | Slit coating die head |
| CN111434390B (en) * | 2019-09-29 | 2021-09-24 | 杭州纤纳光电科技有限公司 | Slit type coating device |
-
2021
- 2021-09-07 CN CN202111047598.6A patent/CN113649225B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113649225A (en) | 2021-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113680605B (en) | Adjustable die head for gluing | |
| CN113649225B (en) | Coating die head and coating equipment | |
| CN113083617B (en) | Coating die head and coating machine | |
| CN218167601U (en) | Coating die head and coating equipment with same | |
| CN114728303A (en) | Coating equipment and coating method | |
| CN111420846A (en) | Precision extrusion die head of coating machine | |
| CN113510044B (en) | Small-surface-density slit type coating gasket | |
| CN113649226B (en) | Coating starting debugging method of coating die head and coating die head | |
| CN114749329B (en) | Slit type extrusion head gasket | |
| CN214390896U (en) | Coating system | |
| CN217222188U (en) | Pole piece coating device capable of reducing slurry sedimentation agglomeration | |
| CN218108203U (en) | Coating device for lithium battery | |
| CN114100956B (en) | Application of pressure sensor in slit coating system | |
| CN215542322U (en) | Coating die head | |
| CN215118926U (en) | Water film device capable of monitoring dripping water and chain type wet processing equipment | |
| CN114103469B (en) | Air channel system of ink-jet printer | |
| CN216225120U (en) | Extrusion coating head and coating device | |
| EP3960475B1 (en) | Sealing member, method of manufacturing the same, pressure adjustment mechanism, liquid ejection head, and liquid ejection apparatus | |
| CN214021747U (en) | Coating pad and coating device | |
| CN213558067U (en) | Coating gasket, coating die head and coating machine | |
| CN218637789U (en) | Coating die head with flow-intercepting block | |
| CN113978129A (en) | Printer ink path system with stable ink circulation | |
| WO2023015458A1 (en) | Battery electrode plate coating apparatus | |
| CN219424787U (en) | Coating die head and coating device | |
| CN214211171U (en) | Improved plaster blocking die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |