Novel coating die head

Abstract

The utility model discloses a novel coating die head which comprises an upper die head, a lower die head and a gasket, a cavity is arranged in the lower die head, a feed port communicated with the cavity is arranged on the rear side of the lower die head, the rear side of the upper die head is hinged on the lower die head, the gasket is arranged between the upper die head and the lower die head, and the gasket is arranged on the lower die head. A cavity is formed in the upper die head, a lower lip is formed in the front side of the lower die head, an upper lip is formed in the front side of the upper die head, a lower lip is formed in the front side of the lower die head, the upper lip and the lower lip form a die head lip, a channel communicated with the cavity and the die head lip is formed between the upper die head and the lower die head, and the upper lip is in a step shape. According to the novel coating die head disclosed by the utility model, the upper lip is step-shaped to form a comma scraper effect, so that the back surface of the lip of the die head does not have slurry residues, a coating is ensured to be traceless, and the coating quality is improved; and meanwhile, the thickness of the coating layer is increased, so that the coating requirement can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of die heads, in particular to a novel coating die head. Background Art

[0002] As an important tool for lithium battery coating, the coating die head is used more and more widely. The existing coating die head includes an upper die head, a lower die head and a gasket. The lower die head is provided with a cavity, the rear side of the lower die head is provided with a feed port connected to the cavity, the rear side of the lower die head is hinged on the lower die head, the gasket is arranged between the upper die head and the lower die head, and the lips on the front sides of the upper die head and the lower die head are both triangular in shape. Although this coating die head can meet the use needs to a certain extent, its disadvantages are: the coating layer thickness is relatively thin, and the back of the lip is easy to carry slurry. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a novel coating die head.

[0004] The technical solution of the utility model is as follows:

[0005] A novel coating die comprises an upper die, a lower die and a gasket, wherein the lower die is provided with a cavity, the rear side of the lower die is provided with a feed port connected with the cavity, the rear side of the upper die is hinged to the lower die, the gasket is arranged between the upper die and the lower die, the front side of the upper die is provided with an upper lip, the front side of the lower die is provided with a lower lip, the upper lip and the lower lip constitute a die lip, a channel connecting the cavity and the die lip is formed between the upper die and the lower die, and the upper lip is stepped.

[0006] Preferably, the lower lip is stepped.

[0007] Preferably, the upper lip and the lower lip are staggered, and the upper lip is located at the rear side of the lower lip.

[0008] Preferably, the novel coating die head further comprises a non-metallic insert, the lower lip is concave inward to form a groove, and the non-metallic insert is embedded in the groove.

[0009] Preferably, the stepped recess of the upper lip is located in front of the stepped recess of the lower lip.

[0010] Preferably, the lower portion of the upper lip is arc-shaped.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the new coating die head of the utility model utilizes a stepped upper lip to form a comma scraper effect, so that the back of the die head lip is free of slurry residue, ensuring that the coating is traceless and improving the coating quality; at the same time, the thickness of the coating layer is increased, so that it can better meet the coating requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of the overall structure of the novel coating die head of the utility model;

[0014] Figure 2 It is a cross-sectional view of the novel coating die head of the utility model;

[0015] Figure 3 It is a partially enlarged schematic diagram of the die head lip of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0018] Example 1

[0019] like Figures 1 to 3As shown, the novel coating die of the present embodiment comprises an upper die 1, a lower die 2 and a gasket 3, wherein a cavity 21 is provided in the lower die 2, a feed port 22 connected with the cavity 21 is provided on the rear side of the lower die 2, the rear side of the upper die 2 is hinged on the lower die 2, the gasket 3 is arranged between the upper die 1 and the lower die 2, an upper lip 11 is provided on the front side of the upper die 1, a lower lip 23 is provided on the front side of the lower die 2, the upper lip 11 and the lower lip 23 constitute a die lip, a channel 24 connecting the cavity 21 and the die lip is formed between the upper die 1 and the lower die 2, and the upper lip 11 is stepped. The novel coating die head of the present embodiment utilizes a stepped upper lip to form a comma scraper effect, so that when the die head is coating with the coating steel roller 5, there is no slurry residue on the back of the die head lip, ensuring that the coating is seamless and the coating quality is improved; at the same time, the thickness of the coating layer is increased, so that it can better meet the coating requirements.

[0020] In this embodiment, the lower lip 23 is stepped, which effectively prevents air from entering between the die lip and the coating steel roller 5 to affect the coating quality. The upper lip 11 is staggered with the lower lip 23, and the upper lip 11 is located at the rear side of the lower lip 23 to increase the thickness of the coating layer. The upper lip 11 forms a comma scraper effect, so that there is no slurry residue on the back of the die lip, and the coating is traceless.

[0021] In this embodiment, the novel coating die head further includes a non-metallic insert 4, the lower lip 23 is concave inward to form a groove 25, and the non-metallic insert 4 is embedded in the groove 25. The non-metallic insert is close to the coating steel roller to effectively block the air between the coating steel roller and the die head lip to ensure the coating quality. The stepped concave part of the upper lip 11 is located in front of the stepped concave part of the lower lip 23, which increases the coating degree and reduces the impact on the coating quality. The lower part of the upper lip 11 is arc-shaped, which is convenient for the slurry to stay and is not easy to cause disorder.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new coating die head, characterized in that: It includes an upper die head, a lower die head and a gasket, wherein the lower die head is provided with a cavity, the rear side of the lower die head is provided with a feed port connected with the cavity, the rear side of the upper die head is hinged to the lower die head, the gasket is arranged between the upper die head and the lower die head, the front side of the upper die head is provided with an upper lip, the front side of the lower die head is provided with a lower lip, the upper lip and the lower lip constitute a die head lip, a channel connecting the cavity and the die head lip is formed between the upper die head and the lower die head, and the upper lip is stepped.

2. The novel coating die head according to claim 1, characterized in that: The lower lip is stepped.

3. The novel coating die head according to claim 2, characterized in that: The upper lip opening is staggered with the lower lip opening, and the upper lip opening is located at the rear side of the lower lip opening.

4. The novel coating die head according to claim 2, characterized in that: The novel coating die head also includes a non-metallic insert, the lower lip is concave inward to form a groove, and the non-metallic insert is embedded in the groove.

5. The novel coating die head according to claim 2, characterized in that: The stepped recess of the upper lip is located in front of the stepped recess of the lower lip.

6. The novel coating die according to any one of claims 1 to 5, characterized in that: The lower part of the upper lip is arc-shaped.

Images