Leveling assembly for slit coating die head

Abstract

The utility model discloses a leveling assembly for a slit coating die head, and relates to the technical field of film coating. Comprising a first hanging beam, a second hanging beam, a leveling screw rod and an elastic adjusting piece, the first hanging beam is provided with an inner cavity, the second hanging beam is rotationally arranged in the first hanging beam, a slit coating die head is installed on the side portion of the second hanging beam, the leveling screw rod is arranged on the first hanging beam in a threaded connection mode, and the lower end of the leveling screw rod is rotationally connected to the second hanging beam; one end of the elastic adjusting piece is connected to the first lifting beam, the other end is connected to the second lifting beam, and the elastic adjusting piece is in a stretched state or a compressed state when connecting the first lifting beam and the second lifting beam. According to the leveling assembly for the slit coating die head, the parallelism of the slit coating die head is adjusted through the leveling screw rod and the elastic adjusting piece, so that the screw rods can be prevented from being clamped mutually, and no loose gap exists between the leveling screw rod and the slit coating die head through the elastic force of the elastic adjusting piece, so that the leveling precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thin film coating, in particular to a slit coating die head leveling component. Background Art

[0002] Thin film fabrication involves three steps: raw material processing, functional layer preparation, and assembly. Functional layer preparation involves applying a coating process to form a light-absorbing layer and an electrolyte layer on the film surface. The quality of the coating process directly impacts the quality of the film. Currently, mainstream coating methods on the market include slot coating and blade coating. Slot coating involves continuously discharging the coating through a narrow slit in the coating die head while the substrate passes beneath it, allowing the slurry discharged from the slit to evenly coat the substrate, forming a coating.

[0003] In the slot coating process, the parallelism between the coating die and the coating platform is a key factor affecting the coating thickness and uniformity. However, the existing coating machines have a simple twin-screw adjustment structure for adjusting the position of the coating die relative to the coating platform. When manually leveling the coating die, skilled workers can only rely on their eyes and personal experience. The leveling accuracy is poor, and the two screws are prone to getting stuck with each other due to inconsistent adjustment strokes when rotating, seriously affecting the leveling effect. Utility Model Content

[0004] The utility model provides a slot coating die leveling assembly, which adjusts the parallelism of the slot coating die by means of a leveling screw and an elastic adjusting piece, thereby preventing the screws from getting stuck with each other and ensuring that there is no loose gap between the leveling screw and the slot coating die through the elastic force of the elastic adjusting piece, thereby improving the leveling accuracy and solving the above-mentioned technical problems.

[0005] The technical solution of the utility model for solving the above problems is: to provide a slit coating die leveling assembly, including a first hanging beam, a second hanging beam, a leveling screw, and an elastic adjusting piece, the first hanging beam having an internal cavity, the second hanging beam being rotatably arranged in the first hanging beam, the slit coating die being installed on the side of the second hanging beam, the leveling screw being threadedly arranged on the first hanging beam, the lower end of the leveling screw being rotatably connected to the second hanging beam, one end of the elastic adjusting piece being connected to the first hanging beam and the other end being connected to the second hanging beam, the elastic adjusting piece being in a tensile state or a compressed state when connected to the first hanging beam and the second hanging beam.

[0006] Furthermore, the upper end of the leveling screw is provided with a first differential head for measuring the screw feed amount of the leveling screw.

[0007] Furthermore, a ball bushing is transversely arranged in the middle of the internal cavity of the first suspension beam, and the second suspension beam is correspondingly sleeved on the ball bushing so as to be rotatably arranged in the second suspension beam.

[0008] Furthermore, the leveling screw is provided at either end of the first suspension beam.

[0009] Furthermore, it also includes a first moving assembly for driving the slot coating die head to move parallel to the second hanging beam, the slot coating die head is correspondingly arranged at the moving end of the first moving assembly, and the first moving assembly is fixedly arranged on the side of the second hanging beam.

[0010] Furthermore, the first moving assembly includes a first base, a first slide rail, and a first slide seat, the slit coating die head is installed on the first slide seat, the first slide rail is arranged on the first base, the first base is fixedly connected to the second suspension beam, and the first slide seat is movably arranged on the first slide rail; a rotary adjustment rod is also rotatably arranged on the first slide seat, and an adjustment gear is provided on the rotary adjustment rod, and an adjustment rack is correspondingly provided on the first base or the first slide rail, and the adjustment gear is meshed with the adjustment rack, and the rotary adjustment rod controls the displacement of the first slide seat through a gear rack structure; a size scale line for marking the moving distance of the first slide seat is also provided on the first base, and an identification scale line is correspondingly provided on the first slide.

[0011] Furthermore, it also includes a first locking rod arranged on the first slide and used to lock the first slide; the first locking rod is screwed on the first slide, and the first locking rod moves through a spiral feed to press against the first slide rail or press against the first base, thereby locking the first slide; the first locking rod also moves through a spiral feed to move away from the first slide rail or away from the first base, thereby unlocking the movable function of the first slide.

[0012] Furthermore, a notch connecting the internal cavity is provided on the side of the first suspension beam, and a connecting piece for fixedly connecting the first base and the second suspension beam is movably provided in the notch. The first base is fixedly installed on the side of the second suspension beam through the connecting piece, and the first base is also located on the outside of the first suspension beam.

[0013] Furthermore, it also includes a second moving component for driving the slit coating die head to move up and down, the first moving component is installed at the lifting output end of the second moving component, and the second moving component is also used to drive the first hanging beam and the second hanging beam to move up and down synchronously.

[0014] Furthermore, the second moving assembly includes a second slide, a second slide rail, a second base, a second adjusting rod, and a second differential head. The first moving assembly is fixedly arranged on the second slide, the second slide rail is vertically arranged on the second base, the second adjusting rod is screwed on the second slide, and the lower end of the second adjusting rod is rotatably connected to the second base. The second differential head is correspondingly arranged at the upper end of the second adjusting rod, and the second adjusting rod drives the second slide to move vertically up and down through a spiral feed motion. The second differential head is correspondingly used to measure the moving distance of the second slide.

[0015] Beneficial effects of the utility model:

[0016] First, the utility model provides a slot coating die leveling assembly, which sets the slot coating die on the side of the second hanging beam, and rotates the second hanging beam to be set on the first hanging beam. The parallelism of the slot coating die relative to the coating platform can be indirectly adjusted by controlling the rotation of the second hanging beam, thereby effectively controlling the thickness and uniformity of the thin film coating.

[0017] Second, the present invention uses only a single leveling screw to drive the second suspension beam to rotate through a spiral feed motion, thereby effectively avoiding the problem of the screws getting stuck with each other due to the mismatch of the sizes of the multiple screws or the adjustment size deviation when multiple screws are used to jointly adjust the inclination angle of the second suspension beam.

[0018] Third, the spiral feed movement distance of the leveling screw can be accurately measured by the micrometer head, which can effectively improve the leveling accuracy of the lower coating die head.

[0019] Fourth, the present invention also provides a first movable assembly and a second movable assembly to effectively control the distance between the slot coating die and the coating platform, further improving the coating effect of the slot coating die. Moreover, when in operation, the first movable assembly and the second movable assembly also have corresponding micrometers or size scales to measure and mark the corresponding movement distance of the slot coating die in various directions, further improving the accuracy of slot coating leveling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0021] Figure 1 This is an overall structural diagram of the slot coating die leveling assembly of this embodiment;

[0022] Figure 2 : is an assembly structure diagram of the first hanging beam and the second hanging beam of this embodiment;

[0023] Figure 3 This is an exploded view of the assembly structure of the first hanging beam and the second hanging beam of this embodiment;

[0024] Figure 4 is a structural diagram of the first moving assembly of this embodiment;

[0025] Figure 5 is a structural diagram of the second moving assembly of this embodiment;

[0026] 1-first hanging beam, 2-second hanging beam, 3-leveling screw, 4-elastic adjustment member, 5-slit coating die, 6-first differential head, 7-ball bushing, 8-first moving assembly, 9-first base, 10-first slide rail, 11-first slide, 12-rotation adjustment rod, 13-first locking rod, 14-connecting member, 15-second moving assembly, 16-second slide, 17-second slide rail, 18-second base, 19-second adjustment rod, 20-second differential head. DETAILED DESCRIPTION

[0027] In this specification, directional terms such as up, down, left, right, front, back, front, back, top, and bottom, which are mentioned or may be mentioned, are defined relative to the configurations shown in the accompanying drawings. The terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may vary depending on the location and usage of the component. Therefore, these or other directional terms should not be construed as restrictive.

[0028] See also Figures 1 to 3 , specifically Figure 2Taking the direction shown as an example, a slot coating die leveling assembly of a specific embodiment of the present invention comprises a first suspension beam 1, a second suspension beam 2, a leveling screw 3, and an elastic adjustment member 4; the first suspension beam 1 is a rectangular frame structure, the second suspension beam 2 is a long strip structure, a rotating shaft is horizontally arranged in the middle of the internal cavity of the first suspension beam 1, a ball bushing 7 is sleeved on the rotating shaft, a mounting through hole is opened in the middle of the second suspension beam 2, the ball bushing 7 is inserted and fixed in the mounting through hole so that the second suspension beam 2 can be rotatably arranged in the internal cavity of the first suspension beam 1; the right end of the first suspension beam 1 is also screwed with The leveling screw 3 has its lower end in contact with the upper surface of the right end of the second suspension beam 2; the elastic adjusting member 4 is a spring, the lower end of the elastic adjusting member 4 is connected to the fastening nut at the right end of the second suspension beam 2, and the upper end is connected to the fastening nut at the right end of the first suspension beam 1. The elastic adjusting member 4 is always in an elastically extended state when it is connected and arranged between the first suspension beam 1 and the second suspension beam 2; a connecting member 14 is laterally arranged on the left side of the second suspension beam 2, and the outer end of the connecting member 14 extends out of the first suspension beam 1 and is fixedly connected to the slit coating die 5 or the body structure where it is located on the left side of the first suspension beam 1.

[0029] In this regard, when the slit coating die 5 is moved to the coating platform and it is found that the slit coating die 5 is not parallel to the coating platform, the technician can rotate the leveling screw 3 to make the leveling screw 3 perform a spiral feeding motion. The downward movement of the leveling screw 3 will push the right end of the second suspension beam 2 to swing downward; when the leveling screw 3 moves upward, the elastic adjustment part 4 will automatically retract to pull the right end of the second suspension beam 2 to swing upward, and the second suspension beam 2 will drive the slit coating die 5 or the body structure where it is located to swing synchronously when swinging up and down, so as to finally adjust the parallelism of the slit coating die 5 relative to the coating platform.

[0030] In this embodiment, the connecting member 14 is a connecting shaft or a threaded connecting shaft, the right end of the first suspension beam 1 is provided with an opening, the right end of the second suspension beam 2 extends outside the first suspension beam 1, and a connecting member 14 is fixedly arranged horizontally on the main body of the second suspension beam 2 exposed to the outside of the first suspension beam 1; the left end of the first suspension beam 1 is provided with a notch, and another connecting member 14 extends outward from the notch at the left end of the first suspension beam 1 to fixedly connect the second suspension beam 2 and the slit coating die 5 or the body structure where it is located.

[0031] In addition, in order to accurately know the distance that the second suspension beam 2 swings upward or downward, a first differential head 6 is also provided at the upper end of the leveling screw 3. The first differential head 6 is used to measure the spiral feed distance of the leveling screw 3, so that technicians can accurately adjust the parallelism of the slit coating die 5 relative to the coating platform.

[0032] In other embodiments, the lower end of the leveling screw 3 may be only rotatably connected to the second suspension beam 2. As long as there is no looseness between the leveling screw 3 and the second suspension beam 2, the elastic adjustment member 4 may be set to either a tensioned or compressed state. In other embodiments, the leveling screw 3 may also be set at the left end of a suspension beam.

[0033] Further, see Figure 4 and Figure 5 In addition to being able to adjust the parallelism of the slit coating die 5 relative to the coating platform, the leveling component of this embodiment can also accurately adjust the height and horizontal distance of the coating die relative to the coating platform through the first moving component 8 and the second moving component 15 to improve the slit coating effect.

[0034] Specifically, the first moving assembly 8 includes a first base 9, a first slide rail 10, and a first slide 11. The slit coating die 5 is fixedly mounted on the first slide 11. The first base 9 is fixed to the second suspension beam 2 via two connecting pieces 14. The first slide rail 10 is horizontally arranged on the first base 9. The first slide 11 is slidably mounted on the first slide rail 10. The upper and lower sides of the first slide rail 10 are provided with inward-inclined limiting slopes. When the first slide 11 is slidably mounted on the first slide rail 10, it passes through the limiting slopes to prevent it from falling off. In addition, the first base 9 is also provided with an adjustment rack parallel to the first slide rail 10. A rotary adjustment rod 12 is vertically arranged on the upper end face of the first slide 11. An adjustment gear is provided at the lower end of the rotary adjustment rod 12, and the right-side gear teeth of the adjustment gear are meshed with the adjustment rack on the first base 9.

[0035] To this end, the technician can rotate the adjusting rod 12 to rotate the adjusting gear and then move on the adjusting rack, thereby driving the first slide 11 to move on the first slide rail 10 to adjust the position of the slot coating die 5 laterally.

[0036] In addition, a first locking rod 13 is screwed onto the upper end surface of the first slide 11. The first locking rod 13 is a threaded rod, and the lower end of the first locking rod 13 extends into the corresponding slide groove of the first slide 11. The first locking rod 13 can be moved downward by a spiral feed motion, so that its lower end is pressed against the first slide rail 10, thereby locking and restricting the first slide 11 from continuing to slide, so as to prevent the slot coating die 5 from loosening after being adjusted horizontally into place. Of course, the first locking rod 13 can also be moved upward to move away from the first slide rail 10, thereby unlocking the first slide 11, so that the rotating adjustment rod 12 can control the lateral movement of the first slide 11.

[0037] Furthermore, size scale lines are horizontally arranged on the first base 9, and corresponding identification scale lines are arranged on the first slide 11. Technicians can determine the specific lateral movement distance data of the first slide 11 through the size difference between the position of the corresponding identification scale lines before adjustment and the position after adjustment, thereby accurately adjusting the lateral movement distance of the slit coating die 5.

[0038] In this embodiment, the size scale lines, identification scale lines, and rack and pinion transmission structure are not drawn in the drawings, and those skilled in the art may regard them as prior art.

[0039] Furthermore, the second moving assembly 15 includes a second slide 16, a second slide rail 17, a second base 18, a second adjusting rod 19, and a second differential head 20. The second base 18 is fixedly set on the external structure, the second slide rail 17 is vertically set on the side wall of the second base 18, and the second slide 16 is correspondingly slidably set on the second slide rail 17. The upper end of the second slide 16 is also provided with a mounting base, and the mounting base is correspondingly vertically screwed with a second adjusting rod 19. The lower end of the second adjusting rod 19 is only rotatably connected to the upper end surface of the second base 18, and the upper end of the second adjusting rod 19 is correspondingly provided with a second differential head 20.

[0040] In this regard, the second adjusting rod 19 can be moved vertically up and down through a spiral feed motion, thereby driving the second slide 16 to move vertically up and down along the second slide rail 17, thereby driving the first moving assembly 8, the slit coating die 5, the first hanging beam 1, and the second hanging beam 2 to move synchronously up and down, thereby effectively adjusting the vertical spacing between the slit coating die 5 and the coating platform.

[0041] Furthermore, a second micrometer head 20 is also provided at the upper end of the second adjustment rod 19. This micrometer head 20 is used to measure the screw feed distance of the second adjustment rod 19, allowing technicians to precisely adjust the height of the slot coating die 5 relative to the coating platform. Furthermore, a threaded locking structure, similar in principle to the first locking rod 13, is also provided on the front side of the second slide 16. This structure is used to lock the second slide 16 when necessary to prevent it from loosening and affecting the coating effect.

[0042] Any matters not mentioned above are applicable to the prior art.

[0043] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A slot coating die leveling assembly, characterized in that: The invention comprises a first hanging beam (1), a second hanging beam (2), a leveling screw (3), and an elastic adjusting member (4), wherein the first hanging beam (1) has an internal cavity, the second hanging beam (2) is rotatably arranged in the first hanging beam (1), a slit coating die head (5) is installed on the side of the second hanging beam (2), the leveling screw (3) is screwed on the first hanging beam (1), the lower end of the leveling screw (3) is rotatably connected to the second hanging beam (2), one end of the elastic adjusting member (4) is connected to the first hanging beam (1), and the other end is connected to the second hanging beam (2), and the elastic adjusting member (4) is in a tensile state or a compressed state when connected to the first hanging beam (1) and the second hanging beam (2).

2. The slot coating die leveling assembly according to claim 1, wherein: The upper end of the leveling screw (3) is provided with a first differential head (6) for measuring the screw feed amount of the leveling screw (3).

3. The slot coating die leveling assembly according to claim 1, wherein: A ball bushing (7) is transversely arranged in the middle of the internal cavity of the first suspension beam (1), and the second suspension beam (2) is correspondingly sleeved on the ball bushing (7) to be rotatably arranged in the second suspension beam (2).

4. The slot coating die leveling assembly according to claim 1, wherein: The leveling screw (3) is arranged at either end of the first suspension beam (1).

5. The slot coating die leveling assembly according to claim 1, wherein: It also includes a first moving assembly (8) for driving the slit coating die head (5) to move parallel to the second hanging beam (2), the slit coating die head (5) is correspondingly arranged at the moving end of the first moving assembly (8), and the first moving assembly (8) is fixedly arranged on the side of the second hanging beam (2).

6. The slot coating die leveling assembly according to claim 5, wherein: The first moving assembly (8) includes a first base (9), a first slide rail (10), and a first slide (11). The slit coating die head (5) is installed on the first slide (11). The first slide rail (10) is arranged on the first base (9). The first base (9) is fixedly connected to the second suspension beam (2). The first slide (11) is movably arranged on the first slide rail (10); a rotary adjustment rod (12) is also rotatably arranged on the first slide (11), and an adjustment gear is provided on the rotary adjustment rod (12). An adjustment rack is correspondingly provided on the first base (9) or the first slide rail (10), and the adjustment gear is meshed with the adjustment rack. The rotary adjustment rod (12) controls the displacement of the first slide (11) through a gear rack structure; a size scale line for marking the moving distance of the first slide (11) is also provided on the first base (9), and an identification scale line is correspondingly provided on the first slide (11).

7. The slot coating die leveling assembly according to claim 6, wherein: The invention also includes a first locking rod (13) arranged on the first slide (11) and used to lock the first slide (11); the first locking rod (13) is screwed on the first slide (11), and the first locking rod (13) moves through a spiral feed to press against the first slide rail (10) or press against the first base (9), thereby locking the first slide (11); the first locking rod (13) also moves through a spiral feed to move away from the first slide rail (10) or away from the first base (9), thereby unlocking the movable function of the first slide (11).

8. The slot coating die leveling assembly according to claim 6, wherein: A notch communicating with the internal cavity is provided on the side of the first suspension beam (1), and a connecting piece (14) for fixedly connecting the first base (9) and the second suspension beam (2) is movably provided in the notch. The first base (9) is fixedly mounted on the side of the second suspension beam (2) via the connecting piece (14), and the first base (9) is also located outside the first suspension beam (1).

9. The slot coating die leveling assembly according to claim 5, wherein: It also includes a second moving assembly (15) for driving the slit coating die head (5) to move up and down, the first moving assembly (8) is installed at the lifting output end of the second moving assembly (15), and the second moving assembly (15) is also used to drive the first hanging beam (1) and the second hanging beam (2) to move up and down synchronously.

10. The slot coating die leveling assembly according to claim 9, wherein: The second moving assembly (15) includes a second slide (16), a second slide rail (17), a second base (18), a second adjusting rod (19), and a second differential head (20). The first moving assembly (8) is fixedly arranged on the second slide (16). The second slide rail (17) is vertically arranged on the second base (18). The second adjusting rod (19) is screwed on the second slide (16), and the lower end of the second adjusting rod (19) is rotatably connected to the second base (18). The second differential head (20) is correspondingly arranged on the upper end of the second adjusting rod (19). The second adjusting rod (19) drives the second slide (16) to move vertically up and down through a spiral feed motion. The second differential head (20) is correspondingly used to measure the moving distance of the second slide (16).

Images