CN219098274U - Planar adsorption flattening device for coating substrate - Google Patents
Planar adsorption flattening device for coating substrate Download PDFInfo
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- CN219098274U CN219098274U CN202223380043.6U CN202223380043U CN219098274U CN 219098274 U CN219098274 U CN 219098274U CN 202223380043 U CN202223380043 U CN 202223380043U CN 219098274 U CN219098274 U CN 219098274U
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Abstract
The utility model provides a coating substrate plane adsorbs flattening device, includes the platform body, the platform body has a reference plane the reference plane be equipped with at least one with the communicating adsorption area in negative pressure chamber, adsorption area is set up to by a plurality of adsorption tank or the adsorption hole that little to big arrange, adsorption tank or adsorption hole constitute at least one trapezoidal or triangle-shaped adsorption area. The utility model has the advantage of well expanding the electrode substrate or the battery diaphragm without wrap angle or without enough wrap angle.
Description
Technical Field
The utility model relates to a flattening device used in the production process of lithium batteries, in particular to a planar adsorption flattening device of a coated substrate, which is suitable for being used in the coating process of electrode substrates or battery diaphragms.
Background
The production of electrode materials or battery separators generally involves several steps of unreeling, coating, baking, and reeling. During this process, some longitudinal wrinkles occur between the two parts or rolls under the action of tensile stress of the electrode substrate (copper foil or aluminum foil) or the battery separator (plastic film). The greater the spatial distance between the two parts or rolls, the more severe the wrinkles. If these wrinkles are not removed in time, there is caused a problem that the coating of the electrode material is not uniform in the product.
In the prior art, the corresponding positions of the longitudinal wrinkles needing to be flattened are realized by installing flattening rollers, such as arc flattening rollers, left and right thread flattening rollers and the like, and the specific type of flattening rollers is selected according to actual needs. However, whatever flattening roll is used, the flattened material, such as an electrode substrate or a battery separator, needs to be coated on the flattening roll for a certain length, that is, a certain wrap angle is needed, and the wrap angle is generally selected between 15 degrees and 30 degrees, so that the flattening method belongs to a curved surface flattening method. However, in practical use, the support roller cannot be used to form a wrap angle or the like due to various factors such as space limitation, and in this case, the flattening roller cannot be used to flatten the electrode substrate or the battery separator. How to develop an electrode substrate or a battery separator well without wrap angle or without sufficient wrap angle is a problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to provide a planar adsorption flattening device for a coated substrate, which can well expand an electrode substrate or a battery diaphragm even when no wrap angle exists or the wrap angle is insufficient.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the method comprises the steps of using a reference plane and a flattening device which is provided with a plurality of adsorption grooves or adsorption holes and is formed by small to large adsorption areas, wherein the adsorption grooves or the adsorption holes are basically perpendicular to the travelling direction of the coated substrate, starting from one position of the coated substrate, expanding and adsorbing the coated substrate backwards gradually towards two sides of the coated substrate, and attaching the coated substrate to the reference plane of the flattening device, so that the coated substrate passing through the flattening device is flattened.
The utility model also provides a plane adsorption flattening device for the coated substrate, which comprises a platform body, wherein the platform body is provided with a reference plane, at least one adsorption area communicated with the negative pressure cavity is arranged on the reference plane, the adsorption area is formed by a plurality of adsorption grooves or adsorption holes which are arranged from small to large, and the adsorption grooves or the adsorption holes form at least one trapezoid or triangle adsorption area.
As an improvement of the utility model, the plurality of adsorption grooves or adsorption holes are symmetrically arranged along the longitudinal central axis of the reference plane and gradually extend to the two lateral sides of the reference plane.
As an improvement of the present utility model, a rectangular suction area is further provided after the triangular suction area.
As an improvement of the utility model, at least one adsorption area communicated with the negative pressure cavity is 1 to 5.
As an improvement to the present utility model, the adsorption grooves or adsorption holes in the triangular adsorption area may be replaced with a wire mesh structure.
As an improvement to the present utility model, the adsorption grooves or adsorption holes in the rectangular adsorption area may be replaced with a wire mesh structure.
As an improvement of the utility model, the reference plane is a mirror plane.
As an improvement of the utility model, the reference plane is provided with a friction-resistant layer.
As an improvement to the utility model, the anti-friction layer is a PTFE coating, TAC coating, DLC coating or TiN coating.
As an improvement of the utility model, a plurality of rollers are arranged on one side of the datum plane, and the outer ring plane of the rollers and the datum plane are in the same plane.
As an improvement of the utility model, the platform body is rectangular.
The utility model adopts at least one adsorption area communicated with the negative pressure cavity on the reference plane, the adsorption area is arranged into a structure of at least one trapezoid or triangle adsorption area formed by a plurality of adsorption grooves or adsorption holes which are arranged from small to large, thus, when the flattened substrate passes through the reference plane of the platform body, the flattened substrate can be adsorbed from the middle point of the trapezoid or triangle adsorption area, and the substrate can be gradually adsorbed from the middle to the two edges, thus the aim of flattening the substrate can be achieved, and the utility model has the advantage that the electrode substrate or the battery diaphragm can be well unfolded when no wrap angle or insufficient wrap angle exists.
Drawings
Fig. 1 is a schematic plan view of a first embodiment of the present utility model.
FIG. 2 is a schematic cross-sectional view of A-A in FIG. 1.
Fig. 3 is a schematic plan view of a second embodiment of the present utility model.
FIG. 4 is a schematic view of the cross-sectional structure B-B of FIG. 2.
Fig. 5 is a schematic plan view of a third embodiment of the present utility model.
Fig. 6 is a schematic plan view of a fourth embodiment of the present utility model.
Fig. 7 is a schematic plan view of a fifth embodiment of the present utility model.
Fig. 8 is a schematic view of a use state of the present utility model.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments.
The utility model provides a plane adsorption flattening method of a coating substrate, which utilizes an auxiliary flattening device which is provided with a reference plane and a plurality of adsorption grooves or adsorption holes which are basically vertical to the travelling direction of the coating substrate and is formed by small to large adsorption areas, and the purpose that the coating substrate passing through the auxiliary flattening device is flattened is achieved by starting from one position of the coating substrate, expanding and adsorbing backwards and gradually towards two sides of the coating substrate and attaching the coating substrate to the reference plane of the flattening device.
Referring to fig. 1 and 2, fig. 1 and 2 disclose a first embodiment of a coated substrate planar adsorption flattening apparatus 600, which includes a platform body 1, wherein the platform body 1 may be made of a metal material, particularly, a wear-resistant metal material, such as mold steel, and the like, and the platform body 1 has a reference plane 11, and the reference plane 11 may be a mirror plane to reduce friction force, or the reference plane 11 is provided with a friction-resistant layer, and the friction-resistant layer is a PTFE coating, a TAC coating, a DLC coating, or a TiN coating, for improving wear resistance of the reference plane 11; at least one adsorption area communicated with the negative pressure cavity 112 is arranged on the reference plane 11, and the number of the adsorption areas can be determined according to various performances of the base material and the wrinkling condition of the base material; the suction areas are arranged as a plurality of suction holes 113 which are symmetrically arranged along the longitudinal central axis 111 of the reference plane 11 and gradually extend towards the two lateral sides of the reference plane 11, and the suction holes 113 form at least one triangular suction area 12. Of course, the suction area may also be designed asymmetrically or, if symmetrical, not necessarily symmetrically with respect to the longitudinal center axis 111, it may be designed symmetrically with respect to a generatrix parallel to the longitudinal center axis 111, etc. In this embodiment, the at least one adsorption area communicating with the negative pressure chamber is 1 to 5.
Of course, the adsorption holes 113 in the triangular adsorption area 12 can be replaced by a wire mesh structure according to the requirement, so that the manufacturing is more convenient and the cost can be saved.
The arrow direction in the figure indicates the traveling direction of the substrate 100 (hereinafter referred to as "direction").
Referring to fig. 3 and 4, fig. 3 and 4 disclose a second embodiment of a coated substrate plane adsorption flattening device, which includes a platform body 1, wherein the platform body 1 may be made of a metal material, particularly, a wear-resistant metal material, such as mold steel, and the like, the platform body 1 has a reference plane 11, and the reference plane 11 may be a mirror plane to reduce friction force, or the reference plane 11 is provided with a friction-resistant layer, and the friction-resistant layer is a PTFE coating, a TAC coating, a DLC coating, or a TiN coating, and is used for improving wear resistance of the reference plane 11; at least one adsorption area communicated with the negative pressure cavity 112 is arranged on the reference plane 11, and the number of the adsorption areas can be determined according to various performances of the base material and the wrinkling condition of the base material; the suction areas are arranged as a plurality of suction holes 113 which are symmetrically arranged along the longitudinal central axis 111 of the reference plane 11 and gradually extend towards the two lateral sides of the reference plane 11, and the suction holes 113 form at least one triangular suction area 12. In this embodiment, at least one adsorption area communicating with the negative pressure chamber is 1 to 5.
Of course, the adsorption holes in the triangular adsorption area 12 can be replaced by a silk screen structure according to the requirement, so that the triangular adsorption area is more convenient to manufacture and can save cost.
In order to achieve rolling friction between the reference plane 11 and the substrate, in this embodiment, a plurality of rollers 14 are disposed on one side of the reference plane 11, and the outer ring plane of the rollers 14 and the reference plane 11 are in the same plane, or the outer ring plane of the rollers 14 slightly protrudes from the reference plane 11.
Referring to fig. 5, fig. 5 discloses a third embodiment of a planar adsorption flattening device for a coated substrate, which includes a platform body 1, wherein the platform body 1 may be made of a metal material, particularly, a wear-resistant metal material, such as mold steel, and the like, the platform body 1 has a reference plane 11, and the reference plane 11 may be a mirror plane to reduce friction force, or the reference plane 11 is provided with a friction-resistant layer, and the friction-resistant layer is a PTFE coating, a TAC coating, a DLC coating, or a TiN coating, and is used for improving the wear resistance of the reference plane 11; at least one adsorption area communicated with the negative pressure cavity is arranged on the reference plane 11, and the number of the adsorption areas can be determined according to various performances of the base material and the wrinkling condition of the base material; the suction areas are arranged as a plurality of suction grooves 114 which are symmetrically arranged along the longitudinal central axis 111 of the reference plane 11 and gradually extend towards the two lateral sides of the reference plane 11, and the suction grooves 114 form at least one triangular suction area 12. In this embodiment, at least one adsorption area communicating with the negative pressure chamber is 1 to 5. In this embodiment, a rectangular suction area 13 is further provided after the triangular suction area 12, so as to further stabilize the flattened coated substrate.
Of course, the adsorption grooves 114 in the triangular adsorption area 12 and the rectangular adsorption area 13 can be replaced by a wire mesh structure according to the requirement, so that the manufacturing is more convenient and the cost can be saved.
In order to achieve rolling friction between the reference plane 11 and the substrate, in this embodiment, a plurality of rollers 14 are disposed on one side of the reference plane 11, and the outer ring plane of the rollers 14 and the reference plane 11 are in the same plane, or the outer ring plane of the rollers 14 slightly protrudes from the reference plane 11.
Referring to fig. 6, fig. 6 shows a fourth embodiment of a planar adsorption flattening apparatus for a coated substrate, and the embodiment shown in fig. 6 is substantially identical to the embodiment shown in fig. 5, except that the adsorption grooves 114 in fig. 5 are formed of a plurality of small racetrack grooves spaced apart by a predetermined distance, and the adsorption grooves in fig. 6 are formed of a plurality of large racetrack grooves spaced apart by a predetermined distance. Of course, the cross-sectional shape of the adsorption groove can be rectangular, prismatic or triangular or other regular geometric shapes.
Referring to fig. 7, fig. 7 shows a fifth embodiment of a planar adsorption flattening device for a coated substrate, and the embodiment shown in fig. 7 has the same general structure as the embodiment shown in fig. 1, except that the adsorption area in fig. 7 has a trapezoid structure from small to large.
In the above embodiments, the platform body 1 may be rectangular.
Referring to fig. 8, fig. 8 is a schematic view of a usage state of the present utility model. As can be seen from the figure, the present utility model can be used in a one-way two-sided coating system, when a substrate 100 passes over a first coating roll 200, a first coating head 300 coats a first side of the substrate 100 with a first electrode material, and if the installation position of a second coating head 400 for coating a second side of the substrate is limited by the installation space, a conventional flattening roll (i.e., a corner is not sufficient or not at all) cannot be installed between the first coating roll 200 and the second coating head 400, and a corner cannot be formed by other passing rolls because the first side has been coated with an electrode material, and at this time, the electrode material is still wet, and only a passing roll 500 is used, in which case the coated substrate planar adsorption flattening device 600 according to the present utility model can be used between the passing roll 500 and the second coating head 400.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (9)
1. The planar adsorption flattening device for the coated substrate is characterized by comprising a platform body (1), wherein the platform body (1) is provided with a reference plane (11), the reference plane (11) is provided with at least one adsorption area communicated with a negative pressure cavity, the adsorption area is provided with a plurality of adsorption grooves or adsorption holes which are distributed from small to large, and the adsorption grooves or the adsorption holes form at least one trapezoid or triangle adsorption area (12).
2. The coated substrate planar adsorption flattening device according to claim 1, wherein the plurality of adsorption grooves or adsorption holes are symmetrically arranged along a longitudinal central axis (111) of the reference plane (11) and gradually expand toward both lateral sides of the reference plane (11).
3. The coated substrate planar adsorption flattening device according to claim 1 or 2, characterized in that a rectangular adsorption zone (13) is also provided after the triangular adsorption zone (12).
4. The coated substrate planar adsorption flattening apparatus according to claim 1 or 2, wherein at least one adsorption area communicating with the negative pressure chamber is 1 to 5.
5. The coated substrate planar adsorption flattening apparatus according to claim 1, wherein the adsorption grooves or adsorption holes in the triangular adsorption area (12) can be replaced with a wire mesh structure.
6. A coated substrate planar adsorption flattening apparatus according to claim 3, wherein the adsorption grooves or holes in the rectangular adsorption area (13) can be replaced with a wire mesh structure.
7. The coated substrate plane adsorption flattening device according to claim 1 or 2, wherein the reference plane (11) is a mirror plane or the outer ring plane of the roller (14) protrudes slightly from the reference plane (11).
8. The coated substrate planar adsorption flattening device according to claim 1 or 2, wherein the reference plane (11) is provided with a friction resistant layer.
9. The coated substrate plane adsorption flattening device according to claim 1 or 2, wherein a plurality of rollers (14) are arranged on one side of the reference plane (11), and the outer ring plane of the rollers (14) and the reference plane (11) are in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223380043.6U CN219098274U (en) | 2022-12-16 | 2022-12-16 | Planar adsorption flattening device for coating substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223380043.6U CN219098274U (en) | 2022-12-16 | 2022-12-16 | Planar adsorption flattening device for coating substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219098274U true CN219098274U (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223380043.6U Active CN219098274U (en) | 2022-12-16 | 2022-12-16 | Planar adsorption flattening device for coating substrate |
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| CN (1) | CN219098274U (en) |
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- 2022-12-16 CN CN202223380043.6U patent/CN219098274U/en active Active
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