CN215878559U

CN215878559U - Coating die head structure

Info

Publication number: CN215878559U
Application number: CN202120564928.8U
Authority: CN
Inventors: 江正贤; 曹稚英; 杨雪; 阮丹琳
Original assignee: Huizhou Yinghe Technology Co Ltd
Current assignee: Huizhou Yinghe Technology Co Ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2022-02-22
Anticipated expiration: 2031-03-18

Abstract

The utility model discloses a coating die head structure which comprises an upper die head and a lower die head, wherein the upper die head and the lower die head are arranged oppositely, and a coating lip is arranged at the front end between the upper die head and the lower die head; the coating lip comprises an upper lip and a lower lip, the upper lip is arranged on the upper die head, and the lower lip is arranged on the lower die head; the upper lip and the lower lip are not equal in thickness, and specifically, the thickness of the lower lip is larger than that of the upper lip. The thickness of the lower lip of the coating die head is thicker than that of the upper lip, and the lower lip of the die head is thicker, so that the coating speed can be improved, the coating continuity and uniformity in high-speed coating are ensured, and the coating production efficiency is improved; the upper lip of the die head is thinner, so that the trailing in coating can be reduced, and the uniformity of high-speed coating is improved. Thereby improving the production efficiency of coating and optimizing the effect of coating.

Description

Coating die head structure

Technical Field

The utility model relates to the technical field of coating equipment, in particular to a coating die head structure.

Background

Coating is a process used in the production of many products, such as the application of a slurry to battery plates. In the coating step, the uniformity of coating, the speed of coating, and the like are important parameters and indexes of coating, and the effect of coating is also directly affected. Coating is generally performed by a coating die, and the conventional coating die comprises an upper die and a lower die, so that the coating speed is low during coating, and the uniformity of coating is influenced by phenomena such as tailing and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a coating die head structure which can solve the technical problems that the coating speed is low during coating of the existing die head, and the coating uniformity is influenced by the phenomena of trailing and the like.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a coating die head structure comprises an upper die head and a lower die head, wherein the upper die head and the lower die head are arranged oppositely, and a coating lip is arranged between the front ends of the upper die head and the lower die head;

the coating lip comprises an upper lip and a lower lip; the upper lip is arranged on the upper die head, and the lower lip is arranged on the lower die head; the upper lip and the lower lip are not of equal thickness.

Further, the thickness of the lower lip is larger than that of the upper lip.

Furthermore, one side of the front end of the upper lip, which is far away from the lower lip, is provided with a thinning structure.

Furthermore, the thinning structure is a step structure formed by cutting.

Furthermore, the thinning structure is a cut inclined plane structure.

Further, one side of the upper die head close to the upper lip and one side of the lower die head close to the lower lip are both provided with a bevel structure.

The beneficial effects realized by the utility model mainly comprise the following points:

according to the coating die head structure, the upper lip and the lower lip of the coating lip are designed to be unequal in thickness, and particularly, the thickness of the upper lip is smaller than that of the lower lip, so that high-speed coating can be realized during coating of the coating die head, the continuity and uniformity of coating during high-speed coating are ensured, and the coating efficiency is improved; and the front end of the upper lip and the side deviating from the lower lip are provided with thinning structures, so that the slurry tailing phenomenon is reduced while high-speed ultrathin coating operation is realized. Thereby improving the production efficiency of coating and optimizing the effect of coating.

Drawings

FIG. 1 is a schematic perspective view of a coating die structure according to an embodiment of the present invention;

FIG. 2 is a schematic left side view of a lip portion of a coating die structure according to one embodiment of the present invention;

FIG. 3 is a schematic diagram of a left side view of the lip portion of another coating die structure in accordance with one embodiment of the present invention;

fig. 4 is a schematic diagram of a coating die structure for coating a pole piece according to an embodiment of the utility model.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.

Example one

Referring to fig. 1-4, a coating die head structure for coating a pole piece. Specifically, the coating die head structure comprises an upper die head 1 and a lower die head 2, wherein the upper die head 1 and the lower die head 2 are arranged oppositely. A gasket 5 is arranged between the upper die head 1 and the lower die head 2, and the gasket 5 ensures that the upper die head 1 and the lower die head 2 are not in direct contact with each other for die assembly. The front end of the gasket 5 is also provided with a slurry extrusion coating area which is a concave structure concavely arranged on the body of the gasket 5 along the flowing direction deviating from the slurry.

Further, a coating lip 3 is provided between the upper die 1 and the front end of the lower die 2. The paste extrusion coating area on the gasket 5 communicates with the coating lip 3. In the coating operation, the slurry flows to the slurry extrusion coating area and then flows out from the coating lip 3 to perform extrusion coating.

Wherein the coating lip 3 includes an upper lip 31 and a lower lip 32; the upper lip 31 is provided on the upper die 1, and the lower lip 32 is provided on the lower die 2. Specifically, the upper lip 31 and the lower lip 32 are respectively provided and embedded at the front end of the upper die head 1 and the foremost end of the lower die head 2, and the mouth parts formed correspondingly to each other are protruded outside the front end of the die head to form the coating lip. Furthermore, the upper lip 31 and the lower lip 32 are not of equal thickness. During coating, the coated slurry flows out from the coating outlet 3 to the position between the upper lip and the lower lip, and is coated on the sheet materials such as the pole piece 4 moving from bottom to top on the right side through the upper lip and the lower lip.

Specifically, the thickness of the die head lower lip 32 is thicker than that of the upper lip 31, and the thickness of the die head lower lip 32 is set to be thicker, so that the coating speed can be improved, the coating continuity and uniformity in high-speed coating can be ensured, and the coating production efficiency can be improved; the upper die lip 31 is formed to be thin, so that tailing during coating can be reduced, and uniformity of high-speed coating can be improved.

As shown in fig. 4, the thickness of the lower lip 32 is thicker than that of the upper lip 31, and the shape of the slurry between the lower lip 32 and the pole piece 4 during coating is as the structure of the area B in fig. 4, the thickness of the lower lip 32 is set to be thicker, so that the slurry has more spatial transition between the lower lip and the pole piece 4 during coating, and the abnormal conditions such as discontinuous coating, non-uniform coating and the like during high-speed coating are avoided; during high-speed coating, the slurry forms a tailing with the structure of the area A in the figure 4 between the upper lip 31 and the pole piece 4, the thickness of the upper lip 31 is thinner, the tailing can be reduced, the coating uniformity during high-speed coating is improved, and the coating effect is optimized.

Referring to fig. 1 to 3, the front end of the upper lip 31 on the side far away from the lower lip 32 is cut and thinned to form a thinned structure. The thickness of the upper lip 31 is thinned by cutting away a portion of the material on the die so that the thickness of the upper lip 11 is thinned, for example, by cutting the end of the upper lip 31 into a stepped configuration in fig. 2; the end of the upper lip 31 in fig. 3 is cut into a bevel structure, and the thickness of the upper lip 31 may be reduced. The front end of the upper lip 31 on the side away from the lower lip 32 may be cut into another shape as long as the thickness can be reduced.

The end of the upper lip 31 shown in the embodiment is cut into a step structure and an inclined plane structure, and the two structures are simple, easy to cut and form, easy to produce and process and convenient to produce and process, so that the production cost of the die head can be reduced, and the market competitiveness of the die head is improved.

Referring to fig. 1 and 2, as a further preferred scheme, the side of the upper die 1 close to the upper lip 31 and the side of the lower die 2 close to the lower lip 32 are both provided with a bevel structure. The side of the upper die head 1 close to the upper lip 31 and the side of the lower die head 2 close to the lower lip 32 are both set to be inclined plane structures, so that a lip structure is conveniently arranged on the die head, the lip is conveniently machined and formed, and the production cost of the die head is reduced; and the transition from a thicker die head to a thinner lip is gradually realized, so that the whole die head structure is smoother and more beautiful.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A coating die structure characterized by: the coating device comprises an upper die head (1) and a lower die head (2), wherein the upper die head (1) and the lower die head (2) are arranged oppositely, and a coating lip (3) is arranged between the upper die head (1) and the front end of the lower die head (2);

the coating lip (3) comprises an upper lip (31) and a lower lip (32); the upper lip (31) is arranged on the upper die head (1), and the lower lip (32) is arranged on the lower die head (2); the upper lip (31) and the lower lip (32) are not of equal thickness.

2. A coating die structure according to claim 1, wherein: the thickness of the lower lip (32) is greater than the thickness of the upper lip (31).

3. A coating die structure according to claim 2, wherein: one side of the front end of the upper lip (31), which is far away from the lower lip (32), is provided with a thinning structure.

4. A coating die structure according to claim 3, wherein: the thinning structure is a step structure formed by cutting.

5. A coating die structure according to claim 3, wherein: the thinning structure is a cut inclined plane structure.

6. A coating die structure according to any one of claims 1 to 5, wherein: the side of the upper die head (1) close to the upper lip (31) and the side of the lower die head (2) close to the lower lip (32) are both provided with inclined surface structures.