Three-in-one air knife and coater

Abstract

The utility model belongs to the technical field of coating machine especially relates to a three-in-one air knife and coating machine, wherein the three-in-one air knife, include: air knife body, rotation adjusting mechanism is connected with air knife body to drive air knife body rotation, the angle between air knife body and base material is adjusted, vertical adjusting mechanism is suitable for driving rotation adjusting mechanism moves up and down to adjust the distance between air knife body and base material, horizontal adjusting mechanism is suitable for driving vertical adjusting mechanism horizontal movement to adjust the distance between vertical adjusting mechanism and coating doctor, and then the distance between air knife body and coating doctor is adjusted, and then the interval between air knife body and coating doctor is realized horizontal adjustment, and the distance between air knife body and base material can also be adjusted vertically, and the angle of air knife body itself can be adjusted simultaneously, so that the position of air knife body is best and can ensure that base material is blown dry and uniform.

Description

Technical Field

[0001] This utility model belongs to the field of coating machine technology, and in particular relates to a three-in-one air knife and coating machine. Background Technology

[0002] In the coating process of perovskite solar cells, the air knife device on the coating machine is fixed to the main support in related technologies, for example: CN222587135U. Figure 1 As shown, when the main support 111 moves back and forth under the drive of the first sliding arm 113, the area covered by the air-blowing knife 140 blowing on the substrate is narrow, which can easily cause uneven blowing and incomplete drying of the substrate surface.

[0003] Therefore, the fixed installation of the air knife device results in an unadjustable position between it and the substrate and the coating blade, leading to technical problems such as uneven blowing and incomplete drying of the substrate. It is necessary to design a three-in-one air knife and coating machine.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0005] This disclosure provides at least one three-in-one air knife and coating machine.

[0006] In a first aspect, embodiments of this disclosure provide a three-in-one air knife, comprising: The body of the wind knife; The rotating adjustment mechanism is connected to the air knife body to drive the air knife body to rotate and adjust the angle between the air knife body and the substrate; The vertical adjustment mechanism is suitable for driving the rotation adjustment mechanism to move up and down to adjust the distance between the air knife body and the substrate; The horizontal adjustment mechanism is adapted to drive the vertical adjustment mechanism to move horizontally, so as to adjust the distance between the vertical adjustment mechanism and the coating blade, and thus adjust the distance between the air knife body and the coating blade.

[0007] In one optional embodiment, the rotation adjustment mechanism includes: a connecting component and a rotation component; The connecting component is connected to the vertical adjustment mechanism; The rotating component is rotatably connected to the connecting component; The air knife body is connected to the rotating assembly. By rotating the rotating assembly, the air knife body is driven to rotate, thereby adjusting the angle between the air knife body and the substrate.

[0008] In one alternative embodiment, the connecting assembly includes: a crossbar, and fixing blocks disposed at both ends of the crossbar; The crossbar is horizontally mounted on the vertical adjustment mechanism; The bottom end of the fixing block is lower than the bottom surface of the crossbar; The rotating assembly is rotatably mounted on the fixed block, and the air knife body is connected to the rotating assembly.

[0009] In one optional embodiment, the rotating assembly includes a connecting block that is rotatably connected to the corresponding fixed block; The connecting block is positioned between the two fixed blocks; The connecting block is provided with a first grip; The bottom of the fixing block is arc-shaped, and arc-shaped scales are provided on the side wall of the fixing block; The bottom surface of the connecting block is connected to the air knife body, and a first pointer aligned with the arc-shaped scale is provided on the side wall of the air knife body; The fixing block is provided with a locking screw, which is suitable for tightening or loosening the connecting block.

[0010] In one optional embodiment, the rotating assembly includes a connecting block that is rotatably connected to the corresponding fixed block; One of the fixed blocks is connected to a rotating shaft, which is arranged horizontally. The rotating shaft is connected to the turntable via a damped rotating shaft; The turntable is connected to one of the connecting blocks via an adapter rod; The connecting block is connected to the air knife body.

[0011] In one optional embodiment, the vertical adjustment mechanism includes: a mounting plate, a first slide rail vertically disposed on the mounting plate, and a first slider slidably disposed on the first slide rail; The first slider is connected to the crossbar via a connecting plate; The first slider is connected to the drive mechanism, the drive mechanism is connected to the mounting plate, and the drive mechanism is electrically connected to the control module; The control module controls the drive mechanism to move the first slider along the first slide rail to adjust the distance between the air knife body and the substrate.

[0012] In one optional embodiment, the horizontal adjustment mechanism includes: a support plate, and a fixing plate disposed on the support plate; The fixing plate is connected to the mounting plate, and a second handle is provided on the fixing plate; The bottom surface of the support plate is provided with a second slide rail, and a second slider is slidably mounted on the second slide rail; The second slide rail is provided with a slide rail clamp to clamp or release the second slide rail.

[0013] In one alternative embodiment, the sidewall of the support plate is provided with a bar-shaped scale. The second slider is equipped with a second pointer for aligning with the bar scale.

[0014] In one optional embodiment, a three-way pipe is provided on the side wall of the air knife body, and air inlets are provided on both sides of the three-way pipe, and the three-way pipe is connected to an air source.

[0015] Secondly, embodiments of this disclosure also provide a coating machine, comprising: Coating blade and the aforementioned three-in-one air knife; The coating blade is suitable for coating a substrate; The three-in-one air knife is located on one side of the coating blade.

[0016] The beneficial effects of this utility model are as follows: This three-in-one air knife includes: an air knife body; a rotation adjustment mechanism connected to the air knife body to drive the air knife body to rotate and adjust the angle between the air knife body and the substrate; a vertical adjustment mechanism adapted to drive the rotation adjustment mechanism to move up and down to adjust the distance between the air knife body and the substrate; and a horizontal adjustment mechanism adapted to drive the vertical adjustment mechanism to move horizontally to adjust the distance between the vertical adjustment mechanism and the coating doctor blade, thereby adjusting the distance between the air knife body and the coating doctor blade. This achieves both horizontal adjustment of the distance between the air knife body and the coating doctor blade and vertical adjustment of the distance between the air knife body and the substrate. Simultaneously, it allows adjustment of the angle of the air knife body itself to achieve the optimal position of the air knife body, ensuring that the substrate is dried and dried evenly.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the structure of a three-in-one air knife provided in an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the structure of a rotation adjustment mechanism provided in an embodiment of the present disclosure; Figure 3 This is a schematic diagram of the structure of a horizontal adjustment mechanism provided in an embodiment of the present disclosure; Figure 4 This is a schematic diagram of the slide rail clamp provided in an embodiment of the present disclosure.

[0021] In the picture: 1. Air knife body; 11. Three-way pipe; 12. Air inlet; 2 Rotation adjustment mechanism, 21 Connecting assembly, 211 Crossbar, 212 Fixing block, 22 Rotation assembly, 221 Connecting block, 222 First grip, 223 Arc scale, 224 First pointer, 225 Locking screw, 23 Rotating shaft, 231 Turntable, 232 Adapter rod, 233 Damping rotating shaft; 3. Vertical adjustment mechanism; 31. Mounting plate; 32. First slide rail; 33. First slider; 34. Drive mechanism; 35. Connecting plate; 4. Horizontal adjustment mechanism, 41. Support plate, 42. Fixing plate, 43. Second grip, 44. Second slide rail, 45. Second slider, 46. Bar scale, 47. Second pointer, 48. Slide rail clamp, 481. Block, 482. Through groove, 483. Protrusion, 484. Wrench handle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0024] In the coating process of perovskite solar cells, the air knife device on the coating machine is fixed on the main support. When the main support moves back and forth on the frame, the area covered by the air knife device blowing on the substrate is narrow, which can easily cause uneven blowing and incomplete drying of the substrate surface.

[0025] In related technologies, a coating blade is provided on one side of the air knife device. The coating blade is a device used to coat and form a thin film.

[0026] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] like Figure 1 As shown, at least one disclosed embodiment provides a three-in-one air knife, including: an air knife body 1; a rotation adjustment mechanism 2 connected to the air knife body 1 to drive the air knife body 1 to rotate and adjust the angle between the air knife body 1 and the substrate; a vertical adjustment mechanism 3 adapted to drive the rotation adjustment mechanism 2 to move up and down to adjust the distance between the air knife body 1 and the substrate; and a horizontal adjustment mechanism 4 adapted to drive the vertical adjustment mechanism 3 to move horizontally to adjust the distance between the vertical adjustment mechanism 3 and the coating blade, thereby adjusting the distance between the air knife body 1 and the coating blade. This achieves horizontal adjustment of the distance between the air knife body 1 and the coating blade, vertical adjustment of the distance between the air knife body 1 and the substrate, and adjustment of the angle of the air knife body 1 itself, so that the position of the air knife body 1 is optimal, ensuring that the substrate is dried and blown evenly.

[0030] In this embodiment, the air knife body 1 is rotated by the rotation adjustment mechanism 2 to adjust the angle between the air knife body 1 and the substrate; the rotation adjustment mechanism 2 is moved up and down by the vertical adjustment mechanism 3 to adjust the distance between the air knife body 1 and the substrate; the vertical adjustment mechanism 3 is moved horizontally by the horizontal adjustment mechanism 4 to adjust the distance between the vertical adjustment mechanism 3 and the coating doctor blade, thereby realizing multiple adjustments to the air knife body 1 to meet the needs of blowing the substrate during the coating process.

[0031] In this embodiment, "three-in-one" means that it can adjust the rotation angle of the air knife body 1, adjust the distance between the air knife body 1 and the substrate in the vertical direction, and adjust the distance between the air knife body 1 and the coating doctor blade in the horizontal direction.

[0032] In one optional embodiment, the rotation adjustment mechanism 2 includes: a connecting component 21 and a rotating component 22; the connecting component 21 is connected to the vertical adjustment mechanism 3; the rotating component 22 is rotatably connected to the connecting component 21; the air knife body 1 is connected to the rotating component 22, and the air knife body 1 is rotated by rotating the rotating component 22 to adjust the angle between the air knife body 1 and the substrate.

[0033] In this embodiment, the rotation adjustment mechanism 2 can be connected to the vertical adjustment mechanism 3 through the connecting component 21, and the rotation component 22 can make the air knife body 1 rotate so that the angle between the air knife body 1 and the substrate meets the process requirements.

[0034] In one optional embodiment, the connecting assembly 21 includes: a crossbar 211 and fixing blocks 212 disposed at both ends of the crossbar 211; the crossbar 211 is horizontally disposed on the vertical adjustment mechanism 3; the bottom end of the fixing block 212 is lower than the bottom surface of the crossbar 211; the rotating assembly 22 is rotatably disposed on the fixing block 212, and the air knife body 1 is connected to the rotating assembly 22.

[0035] like Figure 1 As shown, in one optional embodiment, the rotating assembly 22 includes: a connecting block 221 rotatably connected to a corresponding fixed block 212; the connecting block 221 is disposed between two fixed blocks 212; a first handle 222 is provided on the connecting block 221; the bottom of the fixed block 212 is arc-shaped, and an arc-shaped scale 223 is provided on the side wall of the fixed block 212; the bottom surface of the connecting block 221 is connected to the air knife body 1, and a first pointer 224 aligned with the arc-shaped scale 223 is provided on the side wall of the air knife body 1; a locking screw 225 is provided on the fixed block 212, and the locking screw 225 is adapted to tighten or loosen the connecting block 221.

[0036] In this embodiment, the locking screw 225 can abut against the connecting block 221, preventing the connecting block 221 from rotating, thereby fixing the air knife body 1 after it rotates, ensuring that the angle between the air knife body 1 and the substrate remains unchanged during the coating process; when it is necessary to rotate the air knife body 1, the locking screw 225 can be rotated to loosen the locking screw 225 from the connecting block 221, allowing the connecting block 221 to rotate, which facilitates the adjustment of the angle of the air knife body 1.

[0037] In this embodiment, after loosening the locking screw 225, the connecting block 221 can be rotated by holding the first handle 222, so as to drive the air knife body 1 to rotate.

[0038] In this embodiment, when the connecting block 221 rotates, the angle pointed to by the first pointer 224 on the arc scale 223 can correspond to the angle of the air knife body 1 at this time, which makes it easy to adjust the angle of the air knife body 1 to meet the process requirements.

[0039] like Figure 2 As shown, in one optional embodiment, the rotating assembly 22 includes: a connecting block 221 rotatably connected to a corresponding fixed block 212; a rotating shaft 23 connected to one of the fixed blocks 212, the rotating shaft 23 being arranged laterally; the rotating shaft 23 being connected to a turntable 231 via a damping rotating shaft 233, the damping rotating shaft 233 being circular; the turntable 231 being connected to one of the connecting blocks 221 via an adapter rod 232; and the connecting block 221 being connected to the air knife body 1.

[0040] In this embodiment, rotating the turntable 231 drives the connecting block 221 to rotate, thereby driving the air knife body 1 to rotate.

[0041] In this embodiment, the turntable 231 may be provided with a scale, and the rotating shaft 23 may be provided with a pointer to align with the scale. When the turntable 231 rotates, the pointer and the scale reflect the angle of rotation of the air knife body 1 at this time.

[0042] In this embodiment, after the turntable 231 rotates, it will stop and not rotate after being released by the damping shaft 233. The extended adapter rod 232 makes it convenient for the operator to operate from the side of the coating machine, instead of operating in the middle of the gantry. Side operation is convenient and maintenance is also convenient.

[0043] In one optional embodiment, the vertical adjustment mechanism 3 includes: a mounting plate 31, a first slide rail 32 vertically disposed on the mounting plate 31, and a first slider 33 slidably disposed on the first slide rail 32; the first slider 33 is connected to the crossbar 211 via a connecting plate 35; the first slider 33 is connected to a driving mechanism 34, the driving mechanism 34 is connected to the mounting plate 31, and the driving mechanism 34 is electrically connected to a control module; the control module controls the driving mechanism 34 to drive the first slider 33 to move along the first slide rail 32 to adjust the distance between the air knife body 1 and the substrate.

[0044] In this embodiment, the drive mechanism 34 can be a lead screw motor or the like, and is controlled by a control module. The first slider 33 is connected to the lead screw motor, and the lead screw motor drives the first slider 33 to move to the required position, so that the distance between the air knife body 1 and the substrate meets the process requirements.

[0045] like Figure 3 As shown, in an optional embodiment, the horizontal adjustment mechanism 4 includes: a support plate 41 and a fixing plate 42 disposed on the support plate 41; the fixing plate 42 is connected to the mounting plate 31, and a second handle 43 is disposed on the fixing plate 42; a second slide rail 44 is disposed on the bottom surface of the support plate 41, and a second slider 45 is slidably disposed on the second slide rail 44; a slide rail clamp 48 is disposed on the second slide rail 44 to clamp or release the second slide rail 44.

[0046] In this embodiment, the second slider 45 can be fixed on the gantry. When horizontal movement is required, the support plate 41 can be moved by the second handle 43, so that the second slide rail 44 and the second slider 45 slide together, adjusting the distance between the air knife body 1 and the coating scraper to meet the process requirements.

[0047] like Figure 4 As shown, in this embodiment, the slide rail clamp 48 includes: a block 481; a through groove 482 is provided on the block 481, through which the second slide rail 44 passes, allowing the block 481 to slide against the second slide rail 44; a protrusion 483 may be provided on the inner wall of the through groove 482, one of the protrusions 483 being connected to a wrench handle 484 provided on the outer wall of the block 481; by rotating the wrench handle 484, the protrusion 483 can be brought into close contact with the side wall of the second slide rail 44, thus restricting the sliding between the block 481 and the second slide rail 44. Block 481 can be fixed on the gantry. When protrusion 483 is in close contact with the side wall of the second slide rail 44, slide rail clamp 48 can prevent the support plate 41 from moving. When it is necessary to adjust the position of the air knife body 1 horizontally, first turn the wrench handle 484 to move block 481 away from the second slide rail 44. At this time, hold the second handle 43 to move the support plate 41. After the support plate 41 moves into place, use the wrench handle 484 to make protrusion 483 re-contact the second slide rail 44 to prevent the second slide rail 44 from sliding with block 481, so as to fix the position of support plate 41.

[0048] In this embodiment, the protrusion 483 can be threadedly connected to the block 481, so that when the wrench handle 484 is turned, the distance between the protrusion 483 and the second slide rail 44 can be adjusted, so that the protrusion 483 can be tightly attached to the second slide rail 44 to prevent the block 481 from sliding between the block 481 and the second slide rail 44, thereby preventing the support plate 41 from moving.

[0049] In one alternative embodiment, a bar-shaped scale 46 is provided on the side wall of the support plate 41; a second pointer 47 for aligning with the bar-shaped scale 46 is provided on the second slider 45.

[0050] In this embodiment, when the support plate 41 moves, the position of the support plate 41 can be determined by the bar scale 46 pointed to by the second pointer 47, thereby determining the horizontal position of the air knife body 1 so that the position of the air knife body 1 meets the process requirements.

[0051] In one optional embodiment, a three-way pipe 11 is provided on the side wall of the air knife body 1, and air inlets 12 are provided on both sides of the three-way pipe 11, and the three-way pipe 11 is connected to an air source.

[0052] In this embodiment, an air intake pipe can be connected to a three-way pipe 11 to allow air to enter through the air intakes 12 on both sides.

[0053] In this embodiment, when the position of the air knife body 1 needs to be adjusted, the protrusion 483 can first be moved away from the second slide rail 44 by using the wrench handle 484. The support plate 41 can then move relative to the second slide rail 44. The support plate 41 can be moved by the second handle 43. The second pointer 47 and the bar scale 46 are used to determine whether the support plate 41 has moved into place. Once the support plate 41 has moved into place, the protrusion 483 is made to re-engage tightly with the side wall of the second slide rail 44 by using the wrench handle 484, thus locking the support plate 41 to prevent it from moving. The distance between the blade body 1 and the coating blade meets the process requirements. Then, the control module can control the drive mechanism 34 to move the first slider 33 along the first slide rail 32 to the correct position, so that the height distance between the air knife body 1 and the substrate meets the process requirements. Then, by loosening the locking screw 225 and holding the first handle 222, the air knife body 1 is rotated to the required angle. Then, the locking screw 225 is tightened to keep the air knife body 1 at that angle. Alternatively, the turntable 231 can be used to rotate the air knife body 1 so that the angle of the air knife body 1 meets the requirements.

[0054] At least one other disclosed embodiment also provides a coating machine, comprising: a coating blade and the aforementioned three-in-one air knife; the coating blade is adapted to coat a substrate; the three-in-one air knife is disposed on one side of the coating blade.

[0055] In summary, this three-in-one air knife includes: an air knife body 1; a rotation adjustment mechanism 2 connected to the air knife body 1 to drive the air knife body 1 to rotate and adjust the angle between the air knife body 1 and the substrate; a vertical adjustment mechanism 3 adapted to drive the rotation adjustment mechanism 2 to move up and down to adjust the distance between the air knife body 1 and the substrate; and a horizontal adjustment mechanism 4 adapted to drive the vertical adjustment mechanism 3 to move horizontally to adjust the distance between the vertical adjustment mechanism 3 and the coating blade, thereby adjusting the distance between the air knife body 1 and the coating blade. This achieves both horizontal adjustment of the distance between the air knife body 1 and the coating blade, and vertical adjustment of the distance between the air knife body 1 and the substrate. Simultaneously, it allows adjustment of the angle of the air knife body 1 itself to achieve optimal positioning, ensuring even drying of the substrate.

[0056] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0058] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0059] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0060] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A three-in-one air knife, characterized in that, include: Wind knife body (1); Rotate the adjustment mechanism (2) to connect with the air knife body (1) to drive the air knife body (1) to rotate and adjust the angle between the air knife body (1) and the substrate; The vertical adjustment mechanism (3) is adapted to drive the rotation adjustment mechanism (2) to move up and down to adjust the distance between the air knife body (1) and the substrate; The horizontal adjustment mechanism (4) is adapted to drive the vertical adjustment mechanism (3) to move horizontally, so as to adjust the distance between the vertical adjustment mechanism (3) and the coating blade, thereby adjusting the distance between the air knife body (1) and the coating blade.

2. The three-in-one air knife as described in claim 1, characterized in that: The rotation adjustment mechanism (2) includes: a connecting component (21) and a rotation component (22); The connecting component (21) is connected to the vertical adjustment mechanism (3); The rotating component (22) is rotatably connected to the connecting component (21); The air knife body (1) is connected to the rotating assembly (22). By rotating the rotating assembly (22), the air knife body (1) is driven to rotate, so as to adjust the angle between the air knife body (1) and the substrate.

3. The three-in-one air knife as described in claim 2, characterized in that: The connecting assembly (21) includes: a crossbar (211) and fixing blocks (212) disposed at both ends of the crossbar (211); The crossbar (211) is horizontally arranged on the vertical adjustment mechanism (3); The bottom end of the fixing block (212) is lower than the bottom surface of the crossbar (211); The rotating assembly (22) is rotatably mounted on the fixed block (212), and the air knife body (1) is connected to the rotating assembly (22).

4. The three-in-one air knife as described in claim 3, characterized in that: The rotating assembly (22) includes a connecting block (221) that is rotatably connected to the corresponding fixed block (212); The connecting block (221) is disposed between the two fixed blocks (212); The connecting block (221) is provided with a first grip (222); The bottom of the fixing block (212) is arc-shaped, and arc-shaped scales (223) are provided on the side wall of the fixing block (212). The bottom surface of the connecting block (221) is connected to the air knife body (1), and a first pointer (224) aligned with the arc scale (223) is provided on the side wall of the air knife body (1). The fixing block (212) is provided with a locking screw (225), which is suitable for tightening or loosening the connecting block (221).

5. The three-in-one air knife as described in claim 3, characterized in that: The rotating assembly (22) includes a connecting block (221) that is rotatably connected to the corresponding fixed block (212); One of the fixing blocks (212) is connected to a rotating shaft (23), which is arranged horizontally; The rotating shaft (23) is connected to the turntable (231) via a damping rotating shaft (233); The turntable (231) is connected to one of the connecting blocks (221) via an adapter rod (232); The connecting block (221) is connected to the air knife body (1).

6. The three-in-one air knife as described in claim 3, characterized in that: The vertical adjustment mechanism (3) includes: a mounting plate (31), a first slide rail (32) vertically mounted on the mounting plate (31), and a first slider (33) slidably mounted on the first slide rail (32). The first slider (33) is connected to the crossbar (211) via a connecting plate (35); The first slider (33) is connected to the drive mechanism (34), the drive mechanism (34) is connected to the mounting plate (31), and the drive mechanism (34) is electrically connected to the control module; The control module controls the drive mechanism (34) to drive the first slider (33) to move along the first slide rail (32) to adjust the distance between the air knife body (1) and the substrate.

7. The three-in-one air knife as described in claim 6, characterized in that: The horizontal adjustment mechanism (4) includes: a support plate (41) and a fixing plate (42) disposed on the support plate (41); The fixing plate (42) is connected to the mounting plate (31), and a second handle (43) is provided on the fixing plate (42). The bottom surface of the support plate (41) is provided with a second slide rail (44), and a second slider (45) is slidably provided on the second slide rail (44). The second slide rail (44) is provided with a slide rail clamp (48) to clamp or release the second slide rail (44).

8. The three-in-one air knife as described in claim 7, characterized in that: The support plate (41) has a bar-shaped scale (46) on its side wall. The second slider (45) is provided with a second pointer (47) for aligning with the bar scale (46).

9. The three-in-one air knife as described in claim 1, characterized in that: The side wall of the air knife body (1) is provided with a three-way pipe (11), and air inlets (12) are provided on both sides of the three-way pipe (11). The three-way pipe (11) is connected to the air source.

10. A coating machine, characterized in that, include: Coating blade and the three-in-one air knife as described in claim 1; The coating blade is suitable for coating a substrate; The three-in-one air knife is located on one side of the coating blade.

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