A double-sided coating apparatus

Abstract

A double-sided coating device comprises a doctor blade, the doctor blade comprises a first doctor blade body and a second doctor blade body; the first doctor blade body and the second doctor blade body are oppositely arranged, and a gap for passing a substrate to be coated is arranged between the first doctor blade body and the second doctor blade body; a first limiting unit is arranged on the entrance side of the first doctor blade body in an extendable manner; a second limiting unit is arranged on the entrance side of the second doctor blade body in an extendable manner; and the first limiting unit and the second limiting unit are on the same horizontal plane.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and in particular to a double-sided coating device. Background Technology

[0002] Coating is a process that uses functional materials to replace gas contact on the surface of a substrate. Single-sided coating can be achieved through methods such as gravure coating, doctor blade coating, slot extrusion, spraying, or roller coating. Generally, coating equipment consists of several basic components, including unwinding, coating, drying, and rewinding. However, in special cases, such as when the substrate has a mesh structure or is affected by the solvent in the functional layer, its morphology may change, making it difficult to achieve approximately identical coatings on both sides of the substrate.

[0003] How to coat both sides of a substrate simultaneously and control the thickness of the coating on both sides has become a technical problem that urgently needs to be solved in the industry. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a double-sided coating equipment that can control the thickness of the coating during double-sided coating.

[0005] To achieve the above objectives, this application provides a double-sided coating apparatus, comprising: The scraper includes a first scraper body and a second scraper body; The first scraper body and the second scraper body are arranged facing each other, and a gap is provided between the first scraper body and the second scraper body for the substrate to be coated to pass through. The first limiting unit is retractably mounted on the inlet side of the first scraper body; The second limiting unit is retractably mounted on the inlet side of the second scraper body; The first limiting unit and the second limiting unit are on the same horizontal plane.

[0006] Furthermore, both the end of the first limiting unit facing the second limiting unit and the end of the second limiting unit facing the first limiting unit are provided with adjustment heads.

[0007] Furthermore, the adjusting head is spherical, and / or hemispherical, and / or sheet-like.

[0008] Furthermore, when the adjusting head is hemispherical, the angle between the horizontal plane of the adjusting head and the substrate to be coated in the gap is in the range of 30°-180°, and the convex curved part of the adjusting head is in contact with the substrate to be coated.

[0009] Furthermore, when the adjusting head is plate-shaped, the adjusting head extends from the inlet side of the scraper to the outlet side.

[0010] Furthermore, the first limiting unit and the second limiting unit are linked together.

[0011] Furthermore, it also includes: The first scraper position adjustment unit is disposed on the first scraper body and is used to adjust the size of the gap between the first scraper body and the second scraper body.

[0012] Furthermore, it also includes: The second scraper position adjustment unit is disposed on the second scraper body and is used to adjust the size of the gap between the first scraper body and the second scraper body.

[0013] Furthermore, the first scraper body and the second scraper body are arranged facing each other in the horizontal direction.

[0014] Furthermore, it also includes: The liquid tank is located below the inlet side of the scraper.

[0015] The double-sided coating equipment of this application embodiment can control the consistency of the thickness of the coating on both sides during double-sided coating by setting the first limiting unit and the second limiting unit; if necessary, it can also control the thickness of the coating on each side during double-sided coating; the setting of the first scraper position adjustment unit and the second scraper position adjustment unit can adjust the size of the gap between the first scraper body and the second scraper body, thereby achieving the purpose of adjusting the thickness of the coating on the substrate surface.

[0016] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of a double-sided coating device according to an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: 101-First scraper body; 102-Second scraper body; 103-First scraper position adjustment unit; 104-Second scraper position adjustment unit; 105-First limiting unit; 106-Second limiting unit; 107-Adjusting head; 108-Liquid tank; 109-Substrate to be coated; 110-Limiting roller; 111-Drying unit. Detailed Implementation

[0019] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0021] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0022] It should be noted that the terms "first" and "second" may be used in this application only to distinguish different devices, components or parts, and are not used to define the order of functions performed by these devices, components or parts or their interdependence.

[0023] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "More" should be understood as two or more.

[0024] The double-sided coating equipment of this application includes: The scraper includes a first scraper body 101 and a second scraper body 102; The first scraper body 101 and the second scraper body 102 are arranged facing each other, and a gap is provided between the first scraper body 101 and the second scraper body 102 for the substrate 109 to be coated to pass through. The first limiting unit 105 is retractably disposed on the inlet side of the first scraper body 101; The second limiting unit 106 is retractably disposed on the inlet side of the second scraper body 102; The first limiting unit 105 and the second limiting unit 106 are on the same horizontal plane.

[0025] Example 1 In one exemplary embodiment, the double-sided coating equipment of this application is used for thin film forming in the fields of new energy, new materials, semiconductors and other technologies.

[0026] In one exemplary embodiment, the double-sided coating apparatus of this application includes a doctor blade.

[0027] In one exemplary embodiment, the scraper includes a first scraper body 101 and a second scraper body 102.

[0028] In one exemplary embodiment, the first scraper body 101 and the second scraper body 102 are arranged facing each other, for example, the first scraper body 101 and the second scraper body 102 are arranged facing each other in the horizontal direction. Figure 1 As shown.

[0029] In one exemplary embodiment, a gap is provided between the first scraper body 101 and the second scraper body 102 for the substrate 109 to be coated to pass through. It can be understood that when the substrate 109 to be coated passes through the gap, the scraper performs coating operations on opposite sides of the substrate simultaneously.

[0030] In one exemplary embodiment, the double-sided coating apparatus of this application further includes a first limiting unit 105.

[0031] In one exemplary embodiment, the first limiting unit 105 is retractably disposed on the inlet side of the first scraper body 101. In this example, the inlet side is located below and the outlet side is directly above the inlet side. Figure 1 As shown.

[0032] In one exemplary embodiment, the double-sided coating apparatus of this application further includes a second limiting unit 106.

[0033] In one exemplary embodiment, the second limiting unit 106 is retractably disposed on the inlet side of the second scraper body 102.

[0034] In one exemplary embodiment, the first limiting unit 105 and the second limiting unit 106 are on the same horizontal plane.

[0035] In an exemplary embodiment, when the first limiting unit 105 moves toward the second limiting unit 106, and the second limiting unit 106 moves in the opposite direction to the first limiting unit 105, the substrate 109 to be coated shifts toward the second scraper body 102.

[0036] In an exemplary embodiment, when the first limiting unit 105 moves away from the second limiting unit 106, and when the second limiting unit 106 moves toward the first limiting unit 105, the substrate 109 to be coated shifts toward the first scraper body 101.

[0037] In an exemplary embodiment, the first limiting unit 105 and the second limiting unit 106 are linked; it can be understood that when the first limiting unit 105 moves toward the second limiting unit 106, the second limiting unit 106 simultaneously moves toward the opposite direction of the first limiting unit 105; similarly, when the first limiting unit 105 moves toward the opposite direction of the second limiting unit 106, the second limiting unit 106 simultaneously moves toward the first limiting unit 105.

[0038] In one exemplary embodiment, the end of the first limiting unit 105 facing the second limiting unit 106 and the end of the second limiting unit 106 facing the first limiting unit 105 are both provided with adjusting heads 107.

[0039] In one exemplary embodiment, the adjusting head 107 is spherical, and / or hemispherical, and / or plate-shaped.

[0040] In an exemplary embodiment, when the adjusting head 107 is hemispherical, the angle between the horizontal plane of the adjusting head 107 and the substrate 109 to be coated in the gap is in the range of 30°-180°, for example, the angle between the horizontal plane of the adjusting head 107 and the substrate 109 to be coated in the gap is 90°.

[0041] In one exemplary embodiment, the convex curved portion of the adjusting head 107 contacts the substrate 109 to be coated. This arrangement ensures that the adjusting head 107 supports the substrate 109 to be coated while avoiding any adverse effects on the substrate 109.

[0042] In one exemplary embodiment, when the adjusting head 107 is plate-shaped, the adjusting head 107 extends from the inlet side of the scraper to the outlet side.

[0043] In one exemplary embodiment, the sheet-like adjustment head 107 can be a horizontal sheet or a curved sheet; when the adjustment head 107 is a curved sheet, the convex curved side faces the substrate 109 to be coated.

[0044] In one exemplary embodiment, the double-sided coating apparatus of this application further includes: a first scraper position adjustment unit 103.

[0045] In one exemplary embodiment, a first scraper position adjustment unit 103 is disposed on a first scraper body 101 and is used to adjust the size of the gap between the first scraper body 101 and the second scraper body 102.

[0046] In one exemplary embodiment, as needed, the first scraper position adjustment unit 103 is simultaneously connected to the first substrate, the first substrate is fixed, and when the first scraper position adjustment unit 103 is rotated, the size of the gap between the first scraper body 101 and the second scraper body 102 is adjusted.

[0047] In one exemplary embodiment, the double-sided coating apparatus of this application further includes a second scraper position adjustment unit 104.

[0048] In one exemplary embodiment, the second scraper position adjustment unit 104 is disposed on the second scraper body 102 and is used to adjust the size of the gap between the first scraper body 101 and the second scraper body 102.

[0049] In one exemplary embodiment, as needed, the second scraper position adjustment unit 104 is simultaneously connected to the second substrate, the second substrate is fixed, and when the second scraper position adjustment unit 104 is rotated, the size of the gap between the first scraper body 101 and the second scraper body 102 is adjusted.

[0050] In one exemplary embodiment, the first scraper body 101 and the second scraper body 102 are arranged facing each other in the horizontal direction.

[0051] In one exemplary embodiment, the double-sided coating apparatus of this application further includes a liquid tank 108.

[0052] In one exemplary embodiment, a coating liquid is provided in the liquid tank 108.

[0053] In one exemplary embodiment, the liquid tank 108 is disposed below the inlet side of the scraper.

[0054] In an exemplary embodiment, a limiting roller 110 is provided in the liquid tank 108 as needed. After the coating substrate 109 enters the liquid tank 108 and is restricted by the limiting roller 110, it passes between the first limiting unit 105 and the second limiting unit 106, and finally enters the gap between the first scraper body 101 and the second scraper body 102 to complete the coating.

[0055] In an exemplary embodiment, the gap between the first scraper body 101 and the substrate 109 to be coated can be adjusted by the first scraper position adjustment unit 103, that is, the coating thickness on the first scraper side can be adjusted; the gap between the second scraper body 102 and the substrate 109 to be coated can be adjusted by the second scraper position adjustment unit 104, that is, the coating thickness on the second scraper side can be adjusted.

[0056] In one exemplary embodiment, both the first scraper position adjustment unit 103 and the second scraper position adjustment unit 104 are screw structures, such as... Figure 1 As shown.

[0057] In an exemplary embodiment, without adjusting the first scraper body 101 and the second scraper body 102, the gap between the substrate 109 to be coated and the first scraper body 101 and the second scraper body 102 can be controlled by the first limiting unit 105 and the second limiting unit 106, thereby maintaining the consistency of the coating thickness on both sides of the substrate 109. Of course, if the thickness requirements of the two sides of the substrate 109 to be coated are inconsistent, the gap between the substrate 109 to be coated and the first scraper body 101 and the second scraper body 102 can be controlled by the first limiting unit 105 and the second limiting unit 106, thereby achieving the purpose of controlling the coating thickness of the two coating surfaces of the substrate 109 to be coated.

[0058] In one exemplary embodiment, both the first limiting unit 105 and the second limiting unit 106 are screw structures, such as... Figure 1 As shown.

[0059] In one exemplary embodiment, the double-sided coating apparatus of this application further includes a drying unit 111.

[0060] In one exemplary embodiment, the drying unit 111 is disposed above the scraper outlet.

[0061] In one exemplary embodiment, the scraper in this application embodiment may be a comma scraper, a wire bar scraper, or a sheet scraper, as needed.

[0062] In one exemplary embodiment, the double-sided coating apparatus of this application further includes a winding unit.

[0063] In one exemplary embodiment, the winding unit is disposed after the drying unit 111 and is used to wind up the film material after it has been dried by the drying unit 111.

[0064] In one exemplary embodiment, the double-sided coating apparatus of this application further includes an unwinding unit.

[0065] In one exemplary embodiment, the unwinding unit is disposed before the liquid tank 108. The unwinding unit is used to unwind the substrate 109 to be coated. The unwound substrate 109 enters the liquid tank 108 and is then turned into the inlet of the doctor blade by the limiting roller 110.

[0066] It will be understood by those skilled in the art that the above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A double-sided coating equipment, characterized in that, include: The scraper includes a first scraper body and a second scraper body; The first scraper body and the second scraper body are arranged facing each other, and a gap is provided between the first scraper body and the second scraper body for the substrate to be coated to pass through; The first limiting unit is retractably disposed on the inlet side of the first scraper body; The second limiting unit is retractably disposed on the inlet side of the second scraper body; The first limiting unit and the second limiting unit are on the same horizontal plane.

2. The double-sided coating equipment according to claim 1, characterized in that, An adjustment head is provided at the end of the first limiting unit facing the second limiting unit and at the end of the second limiting unit facing the first limiting unit.

3. The double-sided coating equipment according to claim 2, characterized in that, The adjusting head is spherical, and / or hemispherical, and / or sheet-like.

4. The double-sided coating equipment according to claim 3, characterized in that, When the adjusting head is hemispherical, the angle between the horizontal plane of the adjusting head and the substrate to be coated in the gap is in the range of 30°-180°, and the convex curved part of the adjusting head is in contact with the substrate to be coated.

5. The double-sided coating equipment according to claim 3, characterized in that, When the adjusting head is plate-shaped, the adjusting head extends from the inlet side to the outlet side of the scraper.

6. The double-sided coating equipment according to claim 1, characterized in that, The first limiting unit and the second limiting unit are linked together.

7. The double-sided coating equipment according to claim 1, characterized in that, It also includes: A first scraper position adjustment unit is disposed on the first scraper body and is used to adjust the size of the gap between the first scraper body and the second scraper body.

8. The double-sided coating equipment according to claim 1, characterized in that, It also includes: The second scraper position adjustment unit is disposed on the second scraper body and is used to adjust the size of the gap between the first scraper body and the second scraper body.

9. The double-sided coating equipment according to claim 1, characterized in that, The first scraper body and the second scraper body are arranged facing each other in the horizontal direction.

10. The double-sided coating equipment according to claim 1, characterized in that, It also includes: A liquid tank is located below the inlet side of the scraper.

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