CN218517065U

CN218517065U - Coating die head and coating device

Info

Publication number: CN218517065U
Application number: CN202221537829.1U
Authority: CN
Inventors: 葛杨俊; 黄泽湃; 杨军; 彭建林
Original assignee: Shenzhen Manst Technology Co Ltd
Current assignee: Shenzhen Manst Technology Co Ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2023-02-24
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a coating die head and a coating device, wherein the coating die head comprises a die head body and an adjusting piece; the adjusting piece is fixed in the storage cavity and is used for changing the shape and the size of the storage cavity. Through setting up the regulating part at the storage cavity, be favorable to improving the homogeneity of scribbling the areal density, under the condition of not changing the second die head, through changing the regulating part of different shapes and volume, realize adjusting the effect of scribbling the areal density homogeneity to can save the produced cost of die head of making different cavitys.

Description

Coating die head and coating device

Technical Field

The utility model relates to a coating die head technical field especially relates to a coating die head and coating unit.

Background

Slit extrusion coating is a precise wet coating technique, and the working principle of the slit extrusion coating is that slurry is extruded and sprayed along a gap of a coating die head under a certain pressure and a certain flow rate and is transferred to a substrate. Compared with other coating modes, the coating method has the advantages of high coating speed, high precision and uniform wet thickness; the coating system is closed, so that pollutants can be prevented from entering the coating process, the utilization rate of the slurry is high, the stable property of the slurry can be kept, and the coating system can adapt to different slurry viscosity and solid content ranges.

The coating die head comprises an upper die head, a lower die head and a gasket clamped in the upper die head, a cavity is formed in the lower die head, slurry enters the cavity from a feed inlet, a notch for the slurry to flow out is formed in the front end of the gasket, the upper die head, the lower die head and the gasket are arranged in a surrounding mode to form a coating slit, the slurry extrudes the coating slurry from a lip to a base material on a coating roller through the coating slit, and a functional layer is formed on the base material.

The uniformity of the coating slurry is affected by the internal structure of the cavity, and the coating thickness uniformity can be improved by adjusting the structure of the cavity in the die head. At present, aiming at the diversification of the requirements of the coating process and the difference of the slurry characteristics, a special cavity needs to be designed and customized to realize the improvement of the coating uniformity, and the cavities with different shapes and sizes are processed and manufactured with higher cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a coating die head, when aiming at realizing improving coating quality, reduce coating die head's manufacturing cost.

In order to achieve the above object, the utility model provides a coating die head, include:

the die head body is provided with a material storage cavity; and

the adjusting piece is arranged in the storage cavity and used for changing the shape and the size of the storage cavity.

Optionally, the adjustment member is a block structure.

Optionally, the surface of the adjusting piece close to the cavity opening of the storage cavity is arranged in a V shape.

Optionally, the surface of the adjusting piece close to the storage cavity opening is arranged in an inverted V shape.

Optionally, the surface of the conditioning element adjacent to the mouth of the storage chamber is formed into a curved arrangement.

Optionally, the surface of the regulating member near the mouth of the storage chamber forms a plurality of included angles.

Optionally, a mounting groove for mounting the adjusting member is formed in the wall of the storage cavity.

Optionally, the die head body is provided with a coating slit communicated with the storage cavity, and the adjusting piece is fixed on one side of the storage cavity close to the coating slit.

Optionally, the side wall of one side of the adjusting part is attached to the wall of the storage cavity.

In order to achieve the above object, the present invention further provides a coating apparatus, including the above coating die head.

The utility model discloses following beneficial effect has: the adjusting piece is arranged in the die head cavity, so that the shape and size of the cavity are adjusted, and the uniformity of the coating thickness is improved; under the condition that the lower die head of the coating die head is not replaced, the coating requirement can be met only by replacing the cavity adjusting piece, the cost for manufacturing the coating die head is reduced, and the processing period is shortened; the angle of the cavity can be changed at will, so that the application range of the die head to different processes and slurry is expanded; the die head structure has the advantages that the volume of the cavity can be increased by arranging the small adjusting piece, the pressure of the cavity is reduced, and the die head deformation caused by the overlarge pressure of the die head cavity is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a cross-sectional view of an embodiment of a coating die of the present invention;

FIG. 2 is a general schematic view of an embodiment of the coating die of the present invention;

FIG. 3 is a schematic view of a second embodiment of a coating die according to the present invention;

FIG. 4 is a schematic view of the structure of an adjusting member in a first embodiment of a coating die of the present invention;

FIG. 5 is a schematic view of an adjusting member in a second embodiment of a coating die of the present invention;

fig. 6 is a schematic view of the regulating member in the third embodiment of the coating die of the present invention.

The reference numbers illustrate:

10. a die head body; 1. a first die head; 2. a second die head; 3. a first coating pad; 4. coating a slit; 5. an adjustment member; 6. a material storage cavity.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front, and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a coating die head can be single-layer coating die head, double-deck coating die head or multilayer coating die head, and here is not limited.

As shown in fig. 1 to 3, in an embodiment, the coating die is a single-layer coating die, the coating die includes a die body 10 and a regulating member 5, the die body 10 may include a first die 1 and a second die 2 which are matched with each other, and a first coating pad 3 sandwiched between the first die 1 and the second die 2; a coating slit 4 is formed among the first die head 1, the second die head 2 and the first coating shim 3; the second die head 2 is provided with a storage cavity 6, and the storage cavity 6 is communicated with the coating slit 4. In this embodiment, the material storage chamber 6 is provided with an adjusting member 5, the adjusting member 5 is fixed with the second die head 2 through a bolt, and the adjusting member 5 is used for changing the shape and size of the material storage chamber 6.

Wherein, the material storage chamber 6 can be semi-cylindrical, curved surface, etc., without limitation.

In this embodiment, the adjusting member 5 can be fixed on one side of the storage chamber 6 close to the coating slit 4, a side wall of one side of the adjusting member 5 can be attached to a chamber wall of the storage chamber 6 close to the coating slit 4, and an attachment surface thereof can be rectangular.

In order to prevent the die head from deforming due to the overlarge cavity pressure of the storage cavity 6, the adjusting pieces 5 in different shapes can be designed aiming at different conditions, the adjusting pieces 5 can be of block structures, and when the technological parameters of the coating slurry are changed, the coating requirements can be met by directly replacing the adjusting pieces 5 of the storage cavity 6. For the coating condition of "high in the middle and low on both sides", as shown in fig. 4 and 5, the shape of the adjusting member 5 can be designed to be V-shaped, that is, the surface of the adjusting member 5 close to the orifice of the material storage chamber 6 is arranged in a V-shape; for the coating condition of "low middle and high two sides", as shown in fig. 6, the shape of the adjusting member 5 can be designed to be an inverted V shape, that is, the surface of the adjusting member 5 close to the orifice of the storage chamber 6 is arranged in an inverted V shape.

In addition, in other alternative embodiments, the surface of the adjusting member 5 close to the opening of the material storage chamber 6 forms a plurality of included angles, or the surface of the adjusting member 5 close to the opening of the material storage chamber 6 can be curved, and the like, and the shape of the adjusting member 5 is not specifically limited herein.

It should be noted that when the cavity pressure is too large to cause the die to deform, the cavity adjuster 5 with smaller width can be designed to reduce the cavity pressure by increasing the cavity volume, thereby reducing the die deformation.

It can be understood that by providing the regulating member 5 in the die cavity, the regulation of the shape and size of the cavity is achieved, which is advantageous for improving the coating thickness uniformity; under the condition that the lower die head of the coating die head is not replaced, the coating requirement can be met only by replacing the cavity adjusting piece 5, the cost for manufacturing the coating die head is reduced, and the processing period is shortened; the angle of the cavity can be changed at will, so that the application range of the die head to different processes and slurry is expanded; the cavity volume can be increased by arranging the smaller adjusting piece 5, the cavity pressure is reduced, and the die deformation caused by the overlarge die cavity pressure is reduced.

In another embodiment, the coating die head is a double-layer coating die head, the die head body 10 may further include a third die head, the second die head 2 is disposed between the first die head 1 and the third die head, and a second coating gasket is sandwiched between the second die head 2 and the third die head; a coating slit 4 is also formed among the second die head 2, the third die head and the second coating shim; the third die head can also be provided with a storage cavity 6, wherein the storage cavity 6 is communicated with the coating slit 4.

Similarly, the material storage chamber 6 of the second layer may also be provided with an adjusting member 5, and the upper surface of the adjusting member 5 may also be shaped as a V, an inverted V, a multi-angle, or a curved surface, and the shape of the adjusting member 5 is not specifically limited herein.

In the embodiment, the two material storage chambers 6 can be respectively provided with the same adjusting piece 5 to adjust the coating thickness according to the requirement; of course, different adjusting members 5 can be provided to adjust the coating thickness. For example, the storage cavity 6 of the first layer is provided with the regulating part 5 with the V-shaped surface, and the storage cavity 6 of the second layer is provided with the regulating part 5 with the inverted V-shaped surface. Or the material storage cavity 6 of the first layer is provided with the regulating piece 5 with the surface in the shape of an inverted V, and the material storage cavity 6 of the second layer is provided with the regulating piece 5 with the surface in the shape of a V. Here, the shape of the regulating member 5 provided in the two storage chambers 6 is not particularly limited.

In this embodiment, the material of the regulating member 5 and the material of the coating die head may be the same or different, and the material may meet the strength requirement, and the material of the regulating member 5 is not specifically limited herein.

The utility model also provides a coating device, this coating device include the coating die head, and the concrete structure of this coating die head refers to above-mentioned embodiment, because the utility model provides a coating device includes all schemes of all embodiments of above-mentioned coating die head, consequently, have at least with the same technological effect of coating die head, the explanation differs here.

The above is only the optional embodiment of the present invention, and not therefore the scope of the present invention is limited, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the application directly/indirectly in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A coating die, comprising:

the die head body (10) is provided with a material storage cavity (6); and

the adjusting piece (5) is of a block structure and is arranged in the storage cavity (6) so as to change the shape and size of the storage cavity (6).

2. The coating die according to claim 1, characterized in that the surface of the regulating member (5) close to the orifice of the reservoir chamber (6) is arranged in a V-shape.

3. The coating die according to claim 1, characterized in that the surface of the regulating member (5) close to the mouth of the reservoir chamber (6) is arranged in an inverted V-shape.

4. The coating die according to claim 1, characterized in that the surface of the regulating member (5) near the mouth of the reservoir chamber (6) is formed in a curved arrangement.

5. The coating die according to claim 1, characterized in that the surfaces of the regulating members (5) close to the mouths of the reservoirs (6) form a plurality of included angles.

6. The coating die head according to claim 1, wherein the storage cavity (6) is provided with an installation groove for installing the adjusting piece (5).

7. The coating die according to claim 4, characterized in that the die body (10) is provided with a coating slit (4) communicating with the reservoir chamber (6), and the regulating member (5) is fixed to the reservoir chamber (6) on a side close to the coating slit (4).

8. The coating die according to claim 5, characterized in that the side wall of one side of the regulating member (5) is in abutment with the wall of the reservoir chamber (6).

9. A coating apparatus comprising a coating die according to any one of claims 1 to 8.