CN210585672U - Coating device - Google Patents
Coating device Download PDFInfo
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- CN210585672U CN210585672U CN201921244784.7U CN201921244784U CN210585672U CN 210585672 U CN210585672 U CN 210585672U CN 201921244784 U CN201921244784 U CN 201921244784U CN 210585672 U CN210585672 U CN 210585672U
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Abstract
A coating apparatus is provided, the substrate being located between the powered dancer roll and the coating head; a gap is reserved between the base material and the gas uniform distributor; the coating head is arranged opposite to the gas uniform distributor; because the back of the base material has a gap with the power suspension roller, the front of the base material can be coated under the condition that the back of the base material is coated with an undried coating, so that the two sides of the base material can be coated simultaneously; because the back surface of the base material has a gap with the power suspension roller, compared with the direct contact of a rigid coating roller, the density of the coating surface of the base material is more uniform when the gap is reserved, and the phenomenon that the base material is extruded and broken by the particles of slurry or the tape joint of the base material cannot occur due to the fine buffer of the gap; because the back of the substrate has a gap with the power suspension roller, the whole coating head is prevented from being scrapped due to the collision between the nozzle part of the coating head and the coating roller.
Description
Technical Field
The utility model relates to a coating unit and method, a power suspension's coating unit specifically says so.
Background
In lithium cell anterior segment equipment trade, current extrusion formula coating machine is single face coating machine mainly, and the coating process structure constitutes: unreeling, head (coating), drying, drawing and reeling. The coating process is that two sides of the base material need to be coated, and the second side is coated in a reverse rotation mode after the single side is coated, so that the integral coating is completed. The base material can be repeatedly unreeled once, the coating procedure is increased once, the equipment utilization rate is low, the yield is low, the electric power consumption is high, the pole piece quality is changed due to repeated tape running coating, and the physical performance (unstable tension, crumpling and rolling uniformity), the chemical performance (slurry content density, electrode ions and the like) and the workshop floor area are greatly increased due to frequent use and repeated unreeling and rolling.
As shown in fig. 1, a base material 500 is close to a coating back roll 100, a squeeze coating head 200 is opposite to the coating back roll 100, the squeeze coating head 200 is connected with a slurry supply system 300, the squeeze coating head 200 performs single-side coating on the base material 500 through slurry supplied by the slurry supply system 300, the back surface of the base material cannot have an undried coating layer due to contact with the coating roll, so that double-side simultaneous coating cannot be performed, the second surface is reversely coated after the single-side coating is completed, the whole coating is completed, the base material is easy to be squeezed and broken due to the rigidity of the coating back roll 100, and the mouth part of the coating head is easy to be damaged.
Among them, the CN201010147565.4 coating device realizes double-sided coating, but the substrate moves between the upstream side guide roller and the downstream side guide roller, the requirement for tension control is very strict, and under the condition of insufficient tension control precision, the substrate is easy to shake, which affects the coating quality; since the substrate moves between the upstream guide roller 1 and the downstream guide roller 2 and the substrate S is in contact with the upstream guide roller 1 and the downstream guide roller 2, in order to avoid the damage of the upstream guide roller 1 to the coating on the back surface of the substrate S, the second coating roller 4 must be arranged on the same side and three sides of the downstream guide roller 1, and the drying treatment must be performed by the drying and hardening part 23 before passing through the downstream guide roller 2, so as to avoid the damage of the downstream guide roller 2 to the back surface coating; although this technique realizes double-sided coating, it has strict requirements for tension control in a coating apparatus and installation of a coating roller.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a coating apparatus and a coating method, which are used to solve the problems in the prior art.
A coating apparatus comprising a powered dancer roll, a substrate, a coating head, the substrate being located between the powered dancer roll and the coating head;
a part of the circumferential surface of the power suspension roller is provided with a gas uniform distributor, and the base material moves around the gas uniform distributor;
a gap is reserved between the base material and the gas uniform distributor;
the coating head is arranged opposite to the gas uniform distributor;
one side of the base material is provided with stable supporting force through the gas uniform distributor on the power suspension roller to suspend on the peripheral surface of the power suspension roller, and the other side of the base material is coated through the coating head.
Preferably, the coating head is in contact with the substrate.
Preferably, the coating head is perpendicular to the circumferential surface of the powered dancer roll.
Preferably, a positioning roller for positioning the substrate is provided on the lower side of the coating head.
Preferably, a supporting roller is arranged below the positioning roller, a gap is kept between the supporting roller and the gas uniform distributor, the supporting roller and the gas uniform distributor are arranged oppositely, and the base material is suspended on the circumferential surface of the power suspension roller after passing through the supporting roller.
Preferably, the coating head is a squeeze coating head or a scraper coating head, and the coating head is connected with a slurry supply system.
Preferably, the gas uniform distributor includes gas uniform distributor mesh plate, gas uniform distributor division board, gas uniform distributor curb plate, gas uniform distributor mesh plate sets up power suspension roller global, the one end of gas uniform distributor curb plate with gas uniform distributor mesh plate connects, forms relative confined space, the space passes through gas uniform distributor division board separates, the other end of gas uniform distributor curb plate is gas inlet.
Preferably, the gas equilizer mesh plate is part of the power suspension roller.
Preferably, the mesh plate of the gas uniform distributor is fixedly arranged on the circumferential surface of the power suspension roller through riveting, bolts or welding.
Preferably, the gas inlet is filled with constant pressure gas through a gas pump.
Preferably, the circumferential angle of the gas distributor is less than 180 degrees.
To sum up, the utility model provides a coating device and a coating method, a certain clearance exists between the power suspension roller and the substrate, after the gas of positive pressure enters the power suspension roller, the gas is uniformly distributed and sprayed out through the gas uniform distributor and the densely distributed meshes, stable pressure is generated on the back surface of the substrate, the substrate forms a smooth and wrinkle-free arc surface and is suspended without contact with the power suspension roller, and the front surface of the substrate is directly contacted with the coating head; because the back of the base material has a gap with the power suspension roller, the front of the base material can be coated under the condition that the back of the base material is coated with an undried coating, so that the two sides of the base material can be coated simultaneously; because the back of the base material has a gap with the power suspension roller, compared with the direct contact of a rigid coating roller, the density of the coating surface of the base material is more uniform when the gap is reserved, and the phenomenon that the base material is extruded and broken by the particles of slurry or the tape joint of the base material cannot occur due to the fine buffer of the gap; because the back of the substrate has a gap with the power suspension roller, the whole coating head is prevented from being scrapped due to the collision between the nozzle part of the coating head and the coating roller.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a prior art coating power roller;
FIG. 2 is a schematic diagram of a prior art double-sided coating;
FIG. 3 is a schematic view of a coating apparatus of the present application;
FIG. 4 is a schematic view of a gas sparger;
FIG. 5 is a schematic cross-sectional view of a gas distributor;
FIG. 6 is a schematic illustration of coating using a powered dancer roll;
FIG. 7 is a schematic of coating using a powered dancer roll;
in the figure: 1. the device comprises a power suspension roller, 11 parts of densely distributed meshes, 12 parts of a shell, 13 parts of a gas inlet, 14 parts of a gas distributor, 141 parts of a mesh plate of the gas distributor, 142 parts of a partition plate of the gas distributor, 143 parts of a side plate of the gas distributor, 2 parts of a front coating, 3 parts of a front coating head, 4 parts of a front coating slurry supply system, 5 parts of a positioning roller, 6 parts of a supporting roller, 7 parts of a back coating, 8 parts of a base material, 9 parts of gas, 20 parts of a drying box, 21 parts of a drying air nozzle, 22 parts of a carrier roller, 30 parts of a back coating head, 31 parts of a back coating slurry supply system, 32 parts of a back coating back roller, 40 parts of a floating oven, 41 parts of an upper air nozzle and 42 parts of a lower air.
Detailed Description
The embodiment of the utility model provides a coating unit and coating method for solve the problem that exists among the prior art.
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
To explain the present invention in more detail, the following describes a coating apparatus and a coating method provided by the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-6, a coating apparatus comprises a powered floating roll 1, a substrate 8, a front coating head 3, the substrate 8 being located between the powered floating roll 1 and the front coating head 3;
a part of the circumferential surface of the power suspension roller 1 is provided with a gas uniform distributor 14, and the base material 8 moves around the gas uniform distributor 14;
a gap is reserved between the base material 8 and the gas uniform distributor 14;
the front coating head 3 is arranged opposite to the gas uniform distributor 14;
one surface of the substrate 8 is suspended on the peripheral surface of the power suspension roller 1 by providing stable supporting force through a gas uniform distributor 14 on the power suspension roller 1, and the other surface of the substrate 8 is coated through the front coating head 3; the front coating head 3 is in contact with the substrate 8; the front coating head 3 and the substrate 8 can be vertically arranged, and the peripheral surface of the coating head and the power suspension roller can also keep a certain inclination angle.
A certain gap is formed between the power suspension roller 1 and the substrate 8, after gas with positive pressure enters the power suspension roller 1, the gas is uniformly distributed and sprayed out through the gas uniform distributor 14 and the densely distributed meshes, stable pressure is generated on the back surface of the substrate 8, the substrate 8 forms a smooth and wrinkle-free arc surface which is in non-contact with the power suspension roller and is suspended, and the front surface of the substrate is in direct contact with the coating head; because the back of the base material 8 has a gap with the power suspension roller 1, under the condition that the back of the base material is coated with an undried coating, the front of the base material can be coated, thereby realizing the simultaneous coating of the two sides of the base material; because the back of the base material has a gap with the power suspension roller, compared with the direct contact of a rigid coating roller, the density of the coating surface of the base material is more uniform when the gap is reserved, and the phenomenon that the base material is extruded and broken by the particles of slurry or the tape joint of the base material cannot occur due to the fine buffer of the gap; because the back of the substrate has a gap with the power suspension roller, the whole coating head is prevented from being scrapped due to the collision between the nozzle part of the coating head and the coating roller. The substrate 8 moves under the traction of the power device, the power suspension roller 1 has certain non-contact support for the back surface of the substrate 8, when the front surface of the substrate 8 is coated by the front coating head 3, certain pressure is applied to the front surface of the substrate 8, and under the bidirectional pressure of the front coating head 3 and the power suspension roller 1, the substrate 8 moves under the traction of the power device, so that a stable coating state is maintained.
In order to make the better laminating that keeps certain clearance of substrate 8 on the surface of power suspension roller 1, the downside of front coating head 3 is provided with right the location roller bearing 5 of substrate 8 location, the below of location roller bearing 5 is provided with supporting roller 6, supporting roller 6 with the equipartition ware keeps clearance, relative setting, the substrate passes through behind the supporting roller bearing 6 the peripheral suspension of power suspension roller 1, supporting roller 6 introduces substrate 8 on the suspension face of power suspension roller 1.
The front coating head 3 is an extrusion type coating head which is connected with a slurry supply system; the front coating head 3 may also be another type of coating head such as a blade coating head.
As shown in fig. 4-5, the gas distributor 14 includes a gas distributor mesh plate 141, a gas distributor partition plate 142, and a gas distributor side plate 143, the gas distributor mesh plate 141 is disposed on the circumferential surface of the power suspension roller 1, one end of the gas distributor side plate 143 is connected to the gas distributor mesh plate 141 to form a relatively closed space, the space is partitioned by the gas distributor partition plate 142, the other end of the gas distributor side plate 143 is a gas inlet 13, and the gas inlet 13 is filled with constant pressure gas 9 by a gas pump, a fan, and other gas pressurizing devices; the circumferential angle of the distribution of the gas uniform distributor 14 on the power suspension roller 1 can be 10 degrees, 30 degrees, 60 degrees and 90 degrees, generally the circumferential angle is preferably less than 180 degrees, and preferably 60-120 degrees; the gas uniform distributor mesh plate 141 with the power suspension roller 1 components of a whole that can function independently sets up or integrative setting, gas uniform distributor mesh plate 141 with a part of power suspension roller 1 or gas uniform distributor mesh plate 141 passes through the bolt or welded fastening sets up power suspension roller 1 is global. The mesh size and number on the mesh plate 141 of the gas uniform distributor can be set according to the actual suspension force.
In addition, the application also provides a coating method realized according to the coating device, which comprises the following steps,
a substrate 8 surrounding the power suspension roller 1 forms a smooth arc surface;
the substrate 8 moves around the gas uniform distributor 14 under the traction of a power device;
one side of the substrate 8 is suspended on the peripheral surface of the power suspension roller 1 by providing stable supporting force through a gas uniform distributor 14 on the power suspension roller 1, and the other side of the substrate 8 is coated through the coating head.
As shown in fig. 6, a double-side coating apparatus includes a power suspension roller 1, a substrate 8, a front-side coating head 3, a front-side coating slurry supply system 4, wherein the substrate 8 is located between the power suspension roller 1 and the front-side coating head 3; a part of the circumferential surface of the power suspension roller 1 is provided with a gas uniform distributor 14, and the base material 8 moves around the gas uniform distributor 14; a gap is reserved between the base material 8 and the gas uniform distributor 14; the front coating head 3 is arranged opposite to the gas uniform distributor 14; one surface of the substrate 8 is provided with stable supporting force to be suspended on the circumferential surface of the power suspension roller 1 through a gas uniform distributor 14 on the power suspension roller 1, and the other surface of the substrate 8 is coated through the front coating head 3 to form a front coating 2;
in order to make the better laminating that keeps certain clearance of substrate 8 on the surface of power suspension roller 1, the downside of front coating head 3 is provided with right the location roller bearing 5 of substrate 8 location, the below of location roller bearing 5 is provided with supporting roller 6, supporting roller 6 with the equipartition ware keeps clearance, relative setting, the substrate passes through behind the supporting roller bearing 6 the peripheral suspension of power suspension roller 1, supporting roller 6 introduces substrate 8 on the suspension face of power suspension roller 1.
A back coating head 30, a back coating slurry supply system 31 and a back coating back roll 32 are arranged at the same side of the downstream of the power suspension roll 1, the back coating head 30 is connected with the back coating slurry supply system 31, and the back coating head 30 coats the back of the substrate 8 to form a back coating 7; because the back of the base material 8 has a gap with the power suspension roller 1, under the condition that the back of the base material is coated with an undried coating, the front of the base material can be coated, thereby realizing the simultaneous coating of the two sides of the base material;
the front and back sides of the substrate 8 are coated and then enter a floating oven 40, and the front and back coated substrates are dried through an upper air nozzle 41 and a lower air nozzle 42.
As shown in fig. 7, a single-side coating apparatus includes a power suspension roller 1, a substrate 8, a front-side coating head 3, a front-side coating slurry supply system 4, wherein the substrate 8 is located between the power suspension roller 1 and the front-side coating head 3; a part of the circumferential surface of the power suspension roller 1 is provided with a gas uniform distributor 14, and the base material 8 moves around the gas uniform distributor 14; a gap is reserved between the base material 8 and the gas uniform distributor 14; the front coating head 3 is arranged opposite to the gas uniform distributor 14; one surface of the substrate 8 is provided with stable supporting force to be suspended on the circumferential surface of the power suspension roller 1 through a gas uniform distributor 14 on the power suspension roller 1, and the other surface of the substrate 8 is coated through the front coating head 3 to form a front coating 2;
in order to make the better laminating that keeps certain clearance of substrate 8 on the surface of power suspension roller 1, the downside of front coating head 3 is provided with right the location roller bearing 5 of substrate 8 location, the below of location roller bearing 5 is provided with supporting roller 6, supporting roller 6 with the equipartition ware keeps clearance, relative setting, the substrate passes through behind the supporting roller bearing 6 the peripheral suspension of power suspension roller 1, supporting roller 6 introduces substrate 8 on the suspension face of power suspension roller 1.
A certain gap is formed between the power suspension roller 1 and the substrate 8, after gas with positive pressure enters the power suspension roller 1, the gas is uniformly distributed and sprayed out through the gas uniform distributor 14 and the densely distributed meshes, stable pressure is generated on the back surface of the substrate 8, the substrate 8 forms a smooth and wrinkle-free arc surface which is in non-contact with the power suspension roller and is suspended, and the front surface of the substrate is in direct contact with the coating head; because the back of the base material has a gap with the power suspension roller, compared with the direct contact of a rigid coating roller, the density of the coating surface of the base material is more uniform when the gap is reserved, and the phenomenon that the base material is extruded and broken by the particles of slurry or the tape joint of the base material cannot occur due to the fine buffer of the gap; because the back of the substrate has a gap with the power suspension roller, the whole coating head is prevented from being scrapped due to the collision between the nozzle part of the coating head and the coating roller. The substrate 8 moves under the traction of the power device, the power suspension roller 1 has certain non-contact support for the back surface of the substrate 8, when the front surface of the substrate 8 is coated by the front coating head 3, certain pressure is applied to the front surface of the substrate 8, and under the bidirectional pressure of the front coating head 3 and the power suspension roller 1, the substrate 8 moves under the traction of the power device, so that a stable coating state is maintained.
The base material 8 is subjected to front coating and then enters a drying box 20, and the front coated base material is subjected to drying treatment through a drying air nozzle 21 and a carrier roller 22.
To sum up, the utility model provides a coating device and a coating method, a certain clearance exists between the power suspension roller and the substrate, after the gas of positive pressure enters the power suspension roller, the gas is uniformly distributed and sprayed out through the gas uniform distributor and the densely distributed meshes, stable pressure is generated on the back surface of the substrate, the substrate forms a smooth and wrinkle-free arc surface and is suspended without contact with the power suspension roller, and the front surface of the substrate is directly contacted with the coating head; because the back of the base material has a gap with the power suspension roller, the front of the base material can be coated under the condition that the back of the base material is coated with an undried coating, so that the two sides of the base material can be coated simultaneously; because the back of the base material has a gap with the power suspension roller, compared with the direct contact of a rigid coating roller, the density of the coating surface of the base material is more uniform when the gap is reserved, and the phenomenon that the base material is extruded and broken by the particles of slurry or the tape joint of the base material cannot occur due to the fine buffer of the gap; because the back of the substrate and the power suspension roller have a gap, the whole coating head is prevented from being scrapped due to the collision between the nozzle part of the coating head and the coating roller; the base material moves under the traction of the power device, the power suspension roller has certain non-contact support to the back surface of the base material to generate certain pressure, when the front surface of the base material is coated by the front coating head, the power suspension roller has certain pressure to the front surface of the base material, and under the bidirectional pressure of the front coating head and the power suspension roller, the base material moves under the traction of the power device to keep a stable coating state.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A coating device is characterized by comprising a power suspension roller, a base material and a coating head, wherein the base material is positioned between the power suspension roller and the coating head;
a part of the circumferential surface of the power suspension roller is provided with a gas uniform distributor, and the base material moves around the gas uniform distributor;
a gap is reserved between the base material and the gas uniform distributor;
the coating head is arranged opposite to the gas uniform distributor;
one side of the base material is provided with stable supporting force through the gas uniform distributor on the power suspension roller to suspend on the peripheral surface of the power suspension roller, and the other side of the base material is coated through the coating head.
2. A coating apparatus as in claim 1, wherein said coating head is in contact with said substrate.
3. A coating apparatus as in claim 2, wherein said coating head is perpendicular to the circumference of said powered dancer roll.
4. A coating apparatus as claimed in claim 3, wherein the underside of the coating head is provided with positioning rollers for positioning the substrate.
5. The coating apparatus as claimed in claim 4, wherein a supporting roller is disposed below the positioning roller, the supporting roller and the gas distributor are spaced and opposite to each other, and the substrate passes through the supporting roller and then floats on the peripheral surface of the power suspension roller.
6. A coating apparatus as claimed in claim 2 or 3, wherein the coating head is a die coating head, a blade coating head, and is connected to a slurry supply system.
7. The coating device according to claim 6, wherein the gas distributor comprises a mesh plate of the gas distributor, a partition plate of the gas distributor and a side plate of the gas distributor, the mesh plate of the gas distributor is arranged on the circumferential surface of the power suspension roller, one end of the side plate of the gas distributor is connected with the mesh plate of the gas distributor to form a relatively closed space, the space is separated by the partition plate of the gas distributor, and the other end of the side plate of the gas distributor is a gas inlet.
8. A coating apparatus as claimed in claim 7, wherein said gas distributor mesh plate is part of said powered dancer roll.
9. The coating apparatus as claimed in claim 7, wherein the gas distributor mesh plate is fixedly arranged on the peripheral surface of the power suspension roller by riveting, bolting or welding.
10. A coating apparatus as claimed in claim 7, wherein said gas inlet is supplied with a constant pressure gas by a gas pump.
11. A coating apparatus as claimed in claim 8 or 9, wherein the gas distributor has a circumferential angle of less than 180 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244784.7U CN210585672U (en) | 2019-08-02 | 2019-08-02 | Coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244784.7U CN210585672U (en) | 2019-08-02 | 2019-08-02 | Coating device |
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| CN210585672U true CN210585672U (en) | 2020-05-22 |
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| CN201921244784.7U Active CN210585672U (en) | 2019-08-02 | 2019-08-02 | Coating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314819A (en) * | 2019-08-02 | 2019-10-11 | 佛山市金银河智能装备股份有限公司 | A kind of apparatus for coating and coating method |
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2019
- 2019-08-02 CN CN201921244784.7U patent/CN210585672U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314819A (en) * | 2019-08-02 | 2019-10-11 | 佛山市金银河智能装备股份有限公司 | A kind of apparatus for coating and coating method |
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