CN104056760A - Gap-type blade coating method and coating device thereof - Google Patents
Gap-type blade coating method and coating device thereof Download PDFInfo
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- CN104056760A CN104056760A CN201410309559.2A CN201410309559A CN104056760A CN 104056760 A CN104056760 A CN 104056760A CN 201410309559 A CN201410309559 A CN 201410309559A CN 104056760 A CN104056760 A CN 104056760A
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- coating
- scraper
- hopper
- base material
- drive roll
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Abstract
The invention provides a gap-type blade coating method and a coating device thereof. The method is characterized in that a combined structure is formed by arranging a hopper at one side of a blade opposite to the traveling direction of a substrate, the substrate travels towards one direction through a drive roll or a coating platform, the gap formed between the hopper and the blade is controlled to open or close, and discharge coating or cut-off intermittence of a coating machine is achieved. Compared with the existing transfer-type intermittence coating machine, the coating device manufactured in the way eliminates a driven roll and related components, and greatly reduces the material cost and the manufacturing cost; compared with the existing extrusion coating machine, the coating device needs no imported extrusion coating heads, and greatly reduces the cost; according to the method, slurry is directly coated on the surface of the substrate, no secondary thickness keeping is needed, and the method has the advantages of being accurate in thickness and having no thickness head phenomena.
Description
Technical field
The present invention relates to a kind of clearance-type blade coating coating process and squeegee apparatus thereof that is suitable for battery pole piece coating.
Background technology
Secondary cell, especially serondary lithium battery are all stacked by battery pole piece or coiling forms, and battery pole piece is to be intermittently coated with and to form by coating machine.Conventional coating machine has intermittently coating machine and the intermittently large class of coating machine two of jet printing type of transfer type.Transfer type is coating machine intermittently, generally formed by drive roll, back of the body action roller, scraper and stub bar, described hopper is positioned at a side of drive roll, back of the body action roller is positioned at the opposite side of drive roll, scraper is positioned at the top of drive roll, the slurry in hopper is taken in the rotation of drive roll out of, by scraper determine thick after, then transfer coated is on the base material that moves of back of the body action roller; In order to realize gap coating, generally to drive the folding of back of the body action roller and drive roll to realize, in the time that the back of the body action roller and drive roll close up, slurry is transferred on base material, in the time that back of the body action roller separates with drive roll, on base material, reserve gap, coating will form the independently coating layer of one one on base material so repeatedly.Transfer type intermittently coating machine, due to cheap, is extensively subject to user's welcome, is the main product on present market; But, the generation in the gap of this coating machine, be to be realized by the folding of back of the body action roller and drive roll, this has just produced when slurry is transferred on the base material on back of the body action roller from drive roll, occurs the fixed thick problem of coating layer thickness secondary, easily occur that thickness error is large, especially a thick problem, solves a thick problem although people design a lot of ways, and also occurs the patented technology of many head it offs, but it is still not bery desirable that this problem solves ground; Second Problem is the side that the hopper of transfer type coating machine at intermittence is located at drive roll, hopper cannot be totally-enclosed, so just there will be in slurry sticky agent PVDF to be combined sex change with airborne water and become oil lamella, when serious, PVDF is combined sex change and is become elastomeric material with airborne water, makes PVDF lose viscosity and cannot bond with base material.
Another kind of is extrusion coating machine, extrusion coating machine comprises extrusion coated head and driven roller, base material is along with driven roller moves, extrusion coated head is to substrate surface spraying slurry, when needs are on base material when coating sizing-agent, extrusion coated head is to material spray on base material, and need to produce gap time, extrusion coated head stops to material spray on base material.Although this extrusion coating machine can solve the thickness evenness problem of coating layer preferably, but, the extrusion coated head of this extrusion coating machine, be subject to the restriction of technology, also do not domesticize at present, need to be to external import, therefore, the price of extrusion coating machine is intermittently 5 times of left and right of coating machine of transfer type, having limited domestic a lot of battery pole piece manufacturer uses, only in the time producing high-end product, have no alternative but just use extrusion coating machine at home now, therefore, the scope of application of this extrusion coating machine is very limited at home.
Summary of the invention
In order to overcome above-mentioned problems of the prior art, the object of this invention is to provide a kind of cheap, and can solve preferably the uniformity of coating layer thickness, especially substantially there will not be clearance-type blade coating coating process and the squeegee apparatus thereof of a thick problem.
Technical scheme of the present invention is: a kind of clearance-type blade coating coating process is provided, a side contrary with base material direct of travel that hopper is arranged on to scraper forms fabricated structure, base material is advanced towards a direction through drive roll or coating platform, opening or closing of the gap forming between control hopper and scraper, realizes the blowing coating of coating machine or cuts material intermittently.
As improvement of the present invention, opening or closing of the gap forming between described hopper and scraper is by being arranged at feed hopper bottom, the slotting tool that can move with respect to hopper is realized, in the time that slotting tool is inserted into, the knife face of slotting tool is supported on the side of scraper, stops slurry and forms the gap on base material, in the time that slotting tool is drawn out of, the knife face of slotting tool, away from the side of scraper, is decontroled slurry and is formed the coating layer on base material.
As improvement of the present invention, opening or close by hopper of the gap forming between described hopper and scraper realizes with respect to scraper rotation, when hopper is when to scraper one sideway swivel, the side of the bottom surface of hopper is supported on the side of scraper, stop slurry and form the gap on base material, when hopper is by when away from scraper one sideway swivel, the side of scraper is left in the side of the bottom surface of hopper, decontrols slurry and forms the coating layer on base material.
As improvement of the present invention, the thickness of described blowing coating is in the situation that scraper is motionless, by regulating the spacing of drive roll or coating platform and scraper to realize.
As improvement of the present invention, the thickness of described blowing coating is at drive roll or coating platform motionless in the situation that, by regulating scraper and drive roll or being coated with that the spacing of platform realizes.
The present invention also provides a kind of clearance-type blade coating apparatus for coating, comprise hopper, scraper, drive roll or coating platform, described scraper is positioned at the top of described drive roll or coating platform, base material is advanced towards a direction through drive roll or coating platform, the side contrary with base material direct of travel that described hopper is arranged on scraper forms fabricated structure, opening or closing of the gap forming between control hopper and scraper, realizes the blowing coating of coating machine or cuts material intermittently.
As improvement of the present invention, also comprise the slotting tool of opening or closing of realizing the gap forming between described hopper and scraper, described slotting tool is arranged at feed hopper bottom, can move with respect to hopper, in the time that slotting tool is inserted into, the knife face of slotting tool is supported on the side of scraper, stop slurry and form the gap on base material, in the time that slotting tool is drawn out of, the knife face of slotting tool, away from the side of scraper, is decontroled slurry and is formed the coating layer on base material.
As improvement of the present invention, described hopper is flexibly connected with described scraper, when hopper is when to scraper one sideway swivel, the side of the bottom surface of hopper is supported on the side of scraper, stop slurry and form the gap on base material, when hopper is by when away from scraper one sideway swivel, the side of scraper is left in the side of the bottom surface of hopper, decontrols slurry and forms the coating layer on base material.
As improvement of the present invention, described scraper is fixed, and regulates by the thickness that regulates the spacing of drive roll or coating platform and scraper to realize coating layer.
As improvement of the present invention, described drive roll or coating platform are fixed, and regulate by the thickness that regulates the spacing of scraper and drive roll or coating platform to realize coating layer.
In the present invention, on described hopper suitable for reading, be also provided with the upper cover for sealing described hopper.
Beneficial effect of the present invention is as follows:
The one, with low cost, the present invention, for existing transfer type coating machine at intermittence, has saved driven roll and associated components, has reduced widely material cost and manufacturing cost; For existing extrusion coating machine, without the extrusion coated head of import, its cost reduces greatly;
The 2nd, the present invention adopts once fixed thick, has thickness accurate, produces without thick phenomenon;
The 3rd, only upper cover need be set on hopper port, just can realize all-sealed coating, can not produce PVDF and be combined the problem of sex change with airborne water;
The 4th, can reduce the generation of waste material;
The 5th, can realize and only need few slurry just can be coated with, be suitable for laboratory operation, and the coating in hopper can be coated with completely totally, reduce user's use cost.
Brief description of the drawings
Fig. 1 is the planar structure schematic diagram (coating state) of a kind of embodiment coating state of the present invention.
Fig. 2 is the planar structure schematic diagram (intermittently state) of state at intermittence embodiment illustrated in fig. 1.
Fig. 3 is the planar structure schematic diagram (coating state) of the second embodiment coating state of the present invention.
Fig. 4 is the planar structure schematic diagram (intermittently state) of state at intermittence embodiment illustrated in fig. 3.
Fig. 5 is the planar structure schematic diagram (coating state) of the third embodiment coating state of the present invention.
Fig. 6 is the planar structure schematic diagram (coating state) of the 4th kind of embodiment coating state of the present invention.
Detailed description of the invention
The invention provides a kind of clearance-type blade coating coating process, it is a side formation fabricated structure contrary with base material direct of travel that hopper is arranged on to scraper, base material is advanced towards a direction through drive roll or coating platform, opening or closing of the gap forming between control hopper and scraper, realizes the blowing coating of coating machine or cuts material intermittently.Made apparatus for coating in this way, for existing transfer type coating machine at intermittence, has saved driven roll and associated components, has reduced widely material cost and manufacturing cost; For existing extrusion coating machine, without the extrusion coated head of import, its cost reduces greatly; This method is directly coated on substrate surface by slurry, fixed thick without secondary, has thickness accurate, the advantage producing without thick phenomenon.
In the present embodiment, opening or closing of the gap forming between described hopper and scraper is by being arranged at feed hopper bottom, the slotting tool that can move with respect to hopper is realized, in the time that slotting tool is inserted into, the knife face of slotting tool is supported on the side of scraper, stops slurry and forms the gap on base material, in the time that slotting tool is drawn out of, the knife face of slotting tool, away from the side of scraper, is decontroled slurry and is formed the coating layer on base material.This mode has simple in structure, the feature of processing ease.
In the present invention, opening or close also of the gap forming between described hopper and scraper can realize with respect to scraper rotation by hopper, when hopper is when to scraper one sideway swivel, the side of the bottom surface of hopper is supported on the side of scraper, stop slurry and form the gap on base material, when hopper is by when away from scraper one sideway swivel, the side of scraper is left in the side of the bottom surface of hopper, decontrols slurry and forms the coating layer on base material.
In above-mentioned each method, the thickness of described blowing coating can be in the situation that scraper is motionless, by regulating the spacing of drive roll or coating platform and scraper to realize; Also can be at drive roll or coating platform motionless in the situation that, by regulating scraper and drive roll or being coated with that the spacing of platform realizes.
Refer to Fig. 1 and Fig. 2, what Fig. 1 and Fig. 2 disclosed is a kind of clearance-type blade coating apparatus for coating, and Fig. 1 is the planar structure schematic diagram of a kind of embodiment coating state of the present invention; Fig. 2 is the planar structure schematic diagram of state at intermittence embodiment illustrated in fig. 1.Comprise hopper 1, scraper 2, drive roll 3(also can replace drive roll 3 with coating platform, lower same), described scraper 2 is positioned at the top of described drive roll 3, base material 4 is advanced towards a direction through drive roll 3, the side contrary with base material 4 direct of travels that described hopper 1 is arranged on scraper 2 forms fabricated structure, slotting tool 5 is arranged at the bottom of hopper 1, can move with respect to hopper 1, in the time that slotting tool 5 is inserted into, the knife face 51 of slotting tool 5 is supported on the side 21 of scraper, stop slurry 6, do not allow slurry 6 flow out downwards, form the gap 7 on base material 4, in the time that slotting tool 5 is drawn out of, the knife face 51 of slotting tool 5 is away from the side 21 of scraper 2, decontrol slurry and form the coating layer 8 on base material 4, so, by controlling opening or closing of the gap that forms between hopper 1 and scraper 2, realize the blowing coating of coating machine or cut material intermittence.This apparatus for coating, for existing transfer type coating machine at intermittence, has saved driven roll and associated components, has reduced widely material cost and manufacturing cost; For existing extrusion coating machine, without the extrusion coated head of import, its cost reduces greatly; This method is directly coated on substrate surface by slurry, fixed thick without secondary, has thickness accurate, the advantage producing without thick phenomenon.Meanwhile, there is the generation that can reduce waste material; And only can realize and need just can be coated with by few slurry, be suitable for laboratory operation, and the coating in hopper can be coated with completely totally, reduce user's use cost.
Refer to Fig. 3 and Fig. 4, Fig. 3 compares with embodiment described in Fig. 2 with Fig. 1 with embodiment described in Fig. 4, its general structure is identical, described hopper 1 is flexibly connected with described scraper 2, when hopper 1 driven device (not shown) is during to scraper one sideway swivel, the side of the bottom surface 11 of hopper 1 is supported on the side 21 of scraper, stop slurry and form the gap 7 on base material 4, when hopper 1 is by when away from scraper 2 one sideway swivel, the side 21 of scraper 2 is left in the side of the bottom surface 11 of hopper 1, decontrols slurry and forms the coating layer 8 on base material.
In above-mentioned various embodiment, the adjusting of the thickness of its coating layer 8, can adopt the mode of fixing described scraper 2, regulates (referring to Fig. 5) by the thickness that regulates drive roll 3 and the spacing of scraper 2 to realize coating layer 8; Also can adopt the mode of fixing described drive roll or coating platform, by regulating scraper 2 and the thickness that the spacing of drive roll 3 or coating platform realizes coating layer 8 to regulate (referring to Fig. 6).
In the present invention, on described hopper 1 suitable for reading, be also provided with the upper cover 12 for sealing described hopper 1, can realize all-sealed coating, can not produce PVDF and be combined sex change with airborne water, and use slurry to lose the problem of viscosity.
Claims (10)
1. a clearance-type blade coating coating process, it is characterized in that: a side contrary with base material direct of travel that hopper is arranged on to scraper forms fabricated structure, base material is advanced towards a direction through drive roll or coating platform, opening or closing of the gap forming between control hopper and scraper, realizes the blowing coating of coating machine or cuts material intermittently.
2. clearance-type blade coating coating process according to claim 1, it is characterized in that: opening or closing of the gap forming between described hopper and scraper is by being arranged at feed hopper bottom, the slotting tool that can move with respect to hopper is realized, in the time that slotting tool is inserted into, the knife face of slotting tool is supported on the side of scraper, stops slurry and forms the gap on base material, in the time that slotting tool is drawn out of, the knife face of slotting tool, away from the side of scraper, is decontroled slurry and is formed the coating layer on base material.
3. clearance-type blade coating coating process according to claim 1, it is characterized in that: opening or close by hopper of the gap forming between described hopper and scraper realizes with respect to scraper rotation, when hopper is when to scraper one sideway swivel, the side of the bottom surface of hopper is supported on the side of scraper, stop slurry and form the gap on base material, when hopper is by when away from scraper one sideway swivel, the side of scraper is left in the side of the bottom surface of hopper, decontrols slurry and forms the coating layer on base material.
4. according to the clearance-type blade coating coating process described in claim 1,2 or 3, it is characterized in that: the thickness of described blowing coating is in the situation that scraper is motionless, by regulating the spacing of drive roll or coating platform and scraper to realize.
5. according to the clearance-type blade coating coating process described in claim 1,2 or 3, it is characterized in that: the thickness of described blowing coating is at drive roll or coating platform motionless in the situation that, by regulating scraper and drive roll or being coated with that the spacing of platform realizes.
6. a clearance-type blade coating apparatus for coating, comprise hopper, scraper, drive roll or coating platform, described scraper is positioned at the top of described drive roll or coating platform, base material is advanced towards a direction through drive roll or coating platform, it is characterized in that: the side contrary with base material direct of travel that described hopper is arranged on scraper forms fabricated structure, opening or closing of the gap forming between control hopper and scraper, realizes the blowing coating of coating machine or cuts material intermittently.
7. clearance-type blade coating apparatus for coating according to claim 6, it is characterized in that: also comprise the slotting tool of opening or closing of realizing the gap forming between described hopper and scraper, described slotting tool is arranged at feed hopper bottom, can move with respect to hopper, in the time that slotting tool is inserted into, the knife face of slotting tool is supported on the side of scraper, stop slurry and form the gap on base material, in the time that slotting tool is drawn out of, the knife face of slotting tool, away from the side of scraper, is decontroled slurry and is formed the coating layer on base material.
8. according to claim 6 clearance-type blade coating apparatus for coating, it is characterized in that: described hopper is flexibly connected with described scraper, when hopper is when to scraper one sideway swivel, the side of the bottom surface of hopper is supported on the side of scraper, stop slurry and form the gap on base material, when hopper is by when away from scraper one sideway swivel, the side of scraper is left in the side of the bottom surface of hopper, decontrols slurry and forms the coating layer on base material.
9. according to claim 6,7 or 8 clearance-type blade coating apparatus for coating, it is characterized in that: described scraper is fixed, regulate by the thickness that regulates the spacing of drive roll or coating platform and scraper to realize coating layer.
10. according to claim 6,7 or 8 clearance-type blade coating apparatus for coating, it is characterized in that: described drive roll or coating platform are fixed, regulate by the thickness that regulates the spacing of scraper and drive roll or coating platform to realize coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309559.2A CN104056760A (en) | 2014-07-02 | 2014-07-02 | Gap-type blade coating method and coating device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309559.2A CN104056760A (en) | 2014-07-02 | 2014-07-02 | Gap-type blade coating method and coating device thereof |
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| Publication Number | Publication Date |
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| CN104056760A true CN104056760A (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410309559.2A Pending CN104056760A (en) | 2014-07-02 | 2014-07-02 | Gap-type blade coating method and coating device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597513A (en) * | 2017-10-18 | 2018-01-19 | 杭州星华反光材料股份有限公司 | Gap is coated with glue spreading apparatus and comma coater |
| CN112337732A (en) * | 2020-09-28 | 2021-02-09 | 彩虹（莆田）涂料色卡有限公司 | Coating die and color card processing method |
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| JP2003181351A (en) * | 2001-12-19 | 2003-07-02 | Matsushita Electric Ind Co Ltd | Method and apparatus for fluid coating |
| CN2668281Y (en) * | 2003-10-24 | 2005-01-05 | 北京来福来德科技发展有限公司 | Coating apparatus |
| CN102357441A (en) * | 2011-10-12 | 2012-02-22 | 深圳市信宇人科技有限公司 | Interval type coating machine head |
| CN203437265U (en) * | 2013-07-29 | 2014-02-19 | 深圳市志凌伟业技术有限公司 | Waterproof film coating device |
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2014
- 2014-07-02 CN CN201410309559.2A patent/CN104056760A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003181351A (en) * | 2001-12-19 | 2003-07-02 | Matsushita Electric Ind Co Ltd | Method and apparatus for fluid coating |
| CN2668281Y (en) * | 2003-10-24 | 2005-01-05 | 北京来福来德科技发展有限公司 | Coating apparatus |
| CN102357441A (en) * | 2011-10-12 | 2012-02-22 | 深圳市信宇人科技有限公司 | Interval type coating machine head |
| CN203437265U (en) * | 2013-07-29 | 2014-02-19 | 深圳市志凌伟业技术有限公司 | Waterproof film coating device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597513A (en) * | 2017-10-18 | 2018-01-19 | 杭州星华反光材料股份有限公司 | Gap is coated with glue spreading apparatus and comma coater |
| CN112337732A (en) * | 2020-09-28 | 2021-02-09 | 彩虹（莆田）涂料色卡有限公司 | Coating die and color card processing method |
| CN112337732B (en) * | 2020-09-28 | 2022-01-18 | 彩虹（莆田）涂料色卡有限公司 | Coating die and color card processing method |
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Application publication date: 20140924 |