Three-in-one pre-coating cleaning device and slit coating machine

Abstract

The utility model relates to the technical field of coating, in particular to a three-in-one pre-coating cleaning device and a slit coating machine. The working face of the pre-coating mechanism horizontally abuts against the coating base table, and the pre-coating mechanism comprises a movement part used for double-axis movement and rotation; the cleaning tank is arranged below the pre-coating mechanism and is used for cleaning the pre-coating mechanism which is subjected to translation, overturning and descending in sequence; the air knife moves in the vertical direction and is used for blow-drying the working surface of the pre-coating mechanism; according to the three-in-one pre-coating cleaning device and the slit coating machine, the cleaning requirement is met, meanwhile, follow-up base material conveying can be conducted without waiting for cleaning completion after pre-coating is conducted, the mass production efficiency is improved, and meanwhile pollution to a coating base table is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a three-in-one pre-coating and cleaning device and a slit coating machine. Background Art

[0002] Existing perovskite slit coaters are generally equipped with a pre-coating mechanism, which is used to pre-coat the liquid onto the pre-coating mechanism before formal coating, observe the coating effect of the blade, so that the blade can form a stable liquid bridge during formal coating, and clean the pre-coating mechanism after pre-coating. However, existing self-cleaning pre-coating mechanisms, such as application number CN202323220265.6, will inevitably have water stains and liquid splashing onto the coating base when cleaning the pre-coating mechanism. Therefore, it is impossible to simultaneously transfer the subsequent substrate to the coating base while cleaning the pre-coating mechanism. The substrate must be transferred after the cleaning is completed, which seriously affects the mass production efficiency. Utility Model Content

[0003] In order to solve the technical problems mentioned in the background technology, the utility model provides a three-in-one pre-coating and cleaning device and a slit coater.

[0004] In the first aspect, the utility model provides a three-in-one pre-coating cleaning device, comprising: a coating base; a pre-coating mechanism, the working surface of the pre-coating mechanism is horizontally offset from the coating base, and the pre-coating mechanism includes a moving part for biaxial movement and rotation; a cleaning tank, the cleaning tank is arranged below the pre-coating mechanism, and is used to clean the pre-coating mechanism that has been translated, flipped, and descended in sequence.

[0005] Furthermore, the working surface of the pre-coating mechanism and the coating base are horizontally offset, which includes: the working surface of the pre-coating mechanism and the coating base are in the same horizontal plane when they are offset; wherein the working surface of the pre-coating mechanism and the coating base are considered to be offset when the distance between them is 0.1-1mm.

[0006] Furthermore, the biaxial movement of the pre-coating mechanism includes a horizontal axis and a vertical axis.

[0007] Furthermore, the moving distance of the horizontal axis is not less than the minimum safe distance of the rotation of the pre-coating mechanism to avoid the working surface of the pre-coating mechanism from contacting the coating base during rotation; wherein the minimum safe distance is not less than 0.05 mm.

[0008] Furthermore, when the 2nd to Nth substrates are transported, the moving distance of the vertical axis is greater than the thickness of the substrate.

[0009] Furthermore, when cleaning the pre-coating mechanism, the moving distance of the vertical axis is not less than the distance that the working surface of the pre-coating mechanism is immersed in the cleaning tank and / or the moving distance of the vertical axis is not greater than the transmission path range of the substrate when the table is horizontal.

[0010] Furthermore, the rotation of the pre-coating mechanism includes rotation at any angle.

[0011] Furthermore, it also includes an air knife, which moves in the vertical direction to dry the working surface of the pre-coating mechanism, and the vertical movement and blowing path of the air knife is from top to bottom.

[0012] Furthermore, the minimum path of the wind knife's vertical movement is the vertical projection surface of the working surface completely covered by the wind.

[0013] In a second aspect, the utility model provides a slit coater, comprising the three-in-one pre-coating and cleaning device as described above.

[0014] The beneficial effects of the utility model are that, the three-in-one pre-coating cleaning device and slit coater of the utility model, the pre-coating cleaning device is not higher than the coating platform, and the pre-coating cleaning device can move vertically, horizontally and rotate 360°, which not only meets the cleaning requirements, but also accurately controls the working surface of the air knife and the pre-coating mechanism to greatly improve the cleaning and residue removal effect, and can also prevent water stains and liquid medicine from splashing into the coating platform during cleaning, and can carry out the subsequent substrate transmission while cleaning the pre-coating mechanism, thereby improving mass production efficiency.

[0015] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the initial state structure of a three-in-one pre-coating and cleaning device involved in some embodiments is shown;

[0019] Figure 2 A schematic diagram showing the translation and rotation of a three-in-one pre-coating and cleaning device according to some embodiments is shown;

[0020] Figure 3A schematic diagram showing the descent of the three-in-one pre-coating and cleaning device according to some embodiments for transferring the second substrate to the Nth substrate is shown;

[0021] Figure 4 A schematic diagram showing the lifting and lowering of a three-in-one pre-coating cleaning device in a cleaning state according to some embodiments is shown;

[0022] Figure 5 A schematic diagram of air knife blowing of a three-in-one pre-coating cleaning device involved in some embodiments is shown.

[0023] In the figure:

[0024] Coating base 1, pre-coating mechanism 2, working surface 21, moving part 22, cleaning tank 3, air knife 4. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 As shown, at least one embodiment provides a three-in-one pre-coating cleaning device, comprising: a coating base; a pre-coating mechanism, wherein the working surface of the pre-coating mechanism is horizontally offset from the coating base, and the pre-coating mechanism comprises a moving part for biaxial movement and rotation; and a cleaning tank, wherein the cleaning tank is arranged below the pre-coating mechanism and is used to clean the pre-coating mechanism that has been translated, flipped, and descended in sequence.

[0027] Specifically, the working surface of the pre-coating mechanism and the coating base are horizontally offset, including: the working surface of the pre-coating mechanism and the coating base are in the same horizontal plane when they are offset; wherein the working surface of the pre-coating mechanism and the coating base are considered to be offset when the spacing is 0.1-1mm. When the spacing is 0mm, the pre-coating liquid will penetrate to the back side due to the capillary phenomenon, which is not allowed at the process level and needs to be avoided in practical applications. When the spacing is greater than 1mm, since the coating speed is generally set to 80mm / s, a liquid bridge can be formed on the coating base. When the spacing is greater than 1mm, the coating liquid bridge will drip to the ground due to the large spacing, so it is also necessary to avoid a spacing greater than 1mm. In summary, within the spacing range of 0.1-1mm, when the lip of the blade contacts the working surface again, the liquid film will not be broken, and the spacing within 0.1-1mm can be regarded as offset; the staff can drip the coating liquid onto the coating base through the coating knife to observe whether the coating liquid is qualified, so as to determine whether to start the subsequent formal coating operation.

[0028] See also Figures 1 to 5 Specifically, the biaxial movement of the pre-coating mechanism includes a horizontal axis and a vertical axis, that is, horizontal movement and vertical movement. When the pre-coating mechanism moves horizontally toward the coating base and contacts the coating base, pre-coating begins; after the pre-coating is completed, the pre-coating mechanism moves horizontally in the opposite direction of the coating base by a distance A and vertically descends by a distance B. At this time, the vertical descent distance B is to avoid affecting the transmission of the second substrate. The vertical descent distance B is the minimum descent height and should be greater than the selected substrate thickness; when the pre-coating mechanism starts to be cleaned, the vertical descent distance B should not be less than the distance that the working surface of the pre-coating mechanism is immersed in the cleaning tank, so that the working surface to be cleaned is completely immersed in the cleaning tank. Finally, the rotation function of the pre-coating mechanism is turned on to clean the pre-coating mechanism.

[0029] like Figure 2 As shown, specifically, the moving distance of the horizontal axis is not less than the minimum safe distance (A in the figure) of the rotation of the pre-coating mechanism, so as to avoid the working surface of the pre-coating mechanism from contacting the coating base when rotating, thereby preventing the coating liquid on the working surface from contaminating other components when the pre-coating mechanism rotates; taking the rotating coating base as an example of a rectangular solid with a preferred cross-section of 100mm*100mm, d=100mm, corresponding to the glass substrate t thickness range greater than or equal to 2.2mm and less than or equal to 4.2mm, the minimum safe distance A ranges from 2.11mm to 3.88mm; or, corresponding to the crystalline silicon substrate thickness range t greater than or equal to 0.08mm and less than or equal to 0.15mm, the minimum safe distance A ranges from 0.0799mm to 0.15mm, wherein the thinner the substrate, the smaller the minimum safe distance, and the specific formula is as follows:

[0030]

[0031] In the formula: d is the side length of the cross section of the spin coating base; t is the thickness of the substrate, and the actual A value is slightly larger than the result calculated by the above formula.

[0032] like Figure 3 As shown, specifically, in order not to affect the transmission of the second to the Nth substrate, the vertical drop distance B is the minimum drop height, which should be greater than the selected substrate thickness, for example, 150 mm.

[0033] like Figure 4 As shown, specifically, when the pre-coating mechanism starts to be cleaned, the moving distance of the vertical axis is not less than the distance that the working surface of the pre-coating mechanism is immersed in the cleaning tank, so that the working surface to be cleaned is completely immersed in the cleaning tank.

[0034] Specifically, the moving distance of the vertical axis is not greater than the transmission path range of the substrate when the table is horizontal, so as to avoid affecting the transmission of subsequent substrates due to excessive lifting height.

[0035] Specifically, the rotation of the pre-coating mechanism includes rotation at any angle. In addition to flipping the working surface upside down and placing it inside and outside the cleaning tank, it is also necessary to adjust the angle and cooperate with the air knife to improve the cleaning effect.

[0036] like Figure 5 As shown, specifically, the vertical moving blowing path of the wind knife is from top to bottom, and the arrow in the figure indicates the blowing direction of the wind knife.

[0037] Specifically, the minimum path C of the wind knife moving in the vertical direction is the vertical projection surface of the working surface completely covered by the wind.

[0038] Specifically, the pre-coating mechanism translates to the side away from the coating base, flips the working surface and then descends towards the cleaning tank, or flips the working surface after descending to the cleaning tank, and after cleaning is completed, it rises and rotates the working surface to cooperate with the wind knife, and returns to its original position after the wind knife completes cleaning.

[0039] In a second aspect, the utility model provides a slit coater, comprising the three-in-one pre-coating and cleaning device as described above.

[0040] To sum up, the three-in-one pre-coating cleaning device and slit coater of the utility model, the pre-coating cleaning device is not higher than the coating platform, and the pre-coating cleaning device can move vertically, horizontally and rotate 360°. The three-in-one not only meets the cleaning requirements, but also accurately controls the working surface of the air knife and the pre-coating mechanism to greatly improve the cleaning and residue removal effect, and can also prevent water stains and liquid medicine from splashing into the coating platform during cleaning. While cleaning the pre-coating mechanism, the subsequent substrate can be transmitted, thereby improving mass production efficiency.

[0041] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A three-in-one pre-coating cleaning device, characterized in that: include: Coating abutments; A pre-coating mechanism, wherein the working surface of the pre-coating mechanism is horizontally opposed to the coating base, and the pre-coating mechanism includes a moving part for biaxial movement and rotation; A cleaning tank is arranged below the pre-coating mechanism and is used to clean the pre-coating mechanism after it has been translated, turned over and descended in sequence.

2. The three-in-one pre-coating cleaning device according to claim 1, characterized in that: The working surface of the pre-coating mechanism and the coating base are horizontally abutted against each other, including: the working surface of the pre-coating mechanism and the coating base are in the same horizontal plane when they abut against each other; wherein The working surface of the pre-coating mechanism and the coating base are considered to be offset when the distance between them is 0.1-1 mm.

3. The three-in-one pre-coating cleaning device according to claim 1, characterized in that: The biaxial movement of the pre-coating mechanism includes a horizontal axis and a vertical axis.

4. The three-in-one pre-coating cleaning device according to claim 3, characterized in that: The moving distance of the horizontal axis is not less than the minimum safe distance of the rotation of the pre-coating mechanism, so as to avoid the working surface of the pre-coating mechanism from contacting the coating base when rotating; wherein The minimum safety distance is not less than 0.05 mm.

5. The three-in-one pre-coating cleaning device according to claim 3, characterized in that: When the second to Nth substrates are transported, the moving distance of the vertical axis is greater than the thickness of the substrate.

6. The three-in-one pre-coating cleaning device according to claim 3, characterized in that: When cleaning the pre-coating mechanism, the moving distance of the vertical axis is not less than the distance that the working surface of the pre-coating mechanism is immersed in the cleaning tank and / or the moving distance of the vertical axis is not greater than the transmission path range of the substrate when the table is horizontal.

7. The three-in-one pre-coating cleaning device according to claim 1, characterized in that: The rotation of the pre-coating mechanism includes rotation at any angle.

8. The three-in-one pre-coating cleaning device according to claim 1, characterized in that: It also includes an air knife, which moves in the vertical direction to dry the working surface of the pre-coating mechanism, and the vertical movement and blowing path of the air knife is from top to bottom.

9. The three-in-one pre-coating cleaning device according to claim 8, characterized in that: The minimum path of the wind knife's vertical movement is the vertical projection plane of the wind's entire working surface.

10. A slit coating machine, characterized in that: It comprises a three-in-one pre-coating cleaning device as described in any one of claims 1 to 9.

Images