Double-adjustment double-layer coating die head

Abstract

The utility model discloses a double-adjustment double-layer coating die head which comprises an upper die, a middle die, a lower die, an upper gasket, a lower gasket, a plurality of upper T-shaped rods, a plurality of middle T-shaped rods, a plurality of upper driving mechanisms and a plurality of middle driving mechanisms, the middle die is hinged to the lower die, the upper die is hinged to the middle die, and the lower die is hinged to the middle die. The upper gasket is arranged between the upper die and the middle die, the lower gasket is arranged between the middle die and the lower die, an upper cavity is formed in the top of the middle die, a middle feeding port communicated with the upper cavity is formed in the back of the middle die, an upper die nozzle is formed in the front end of the upper die and the front end of the middle die, and a lower die nozzle is formed in the rear end of the middle die. And an upper channel for communicating the upper die nozzle with the upper cavity is formed between the upper die and the middle die. According to the utility model, the double-layer coating adjustment of the coating die head can be realized; and an upper and middle die adjusting mode is adopted, so that the problems of complicated structure, inconvenience in disassembly and assembly and difficulty in maintenance caused by a traditional upper and lower die adjusting mode are solved, the production efficiency is effectively improved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating dies, and particularly relates to a double-adjustment double-layer coating die. Background Art

[0002] At present, in the lithium battery industry, the battery core generally uses two different active substances as coatings. In order to ensure the accuracy of the surface density of the upper and lower layers of the coatings, a double-adjustment double-layer die is generally used to control the surface density. The adjustment methods of the existing double-adjustment double-layer dies are generally upper and lower die adjustments, and there are two control methods: manual micrometer and automatic servo motor. No matter which control method is used, the adjustment structure of the lower die is installed at the front lower position of the die head, that is, below the lip, and generally includes complex structures such as steering mechanisms. The maintenance of the adjustment structure of the lower die requires the die head to be removed from the coating machine before it can be carried out. The adjustment mechanism has a complex structure, and the number of parts that need to be disassembled and installed is too large. Each maintenance takes several hours or even longer, seriously affecting production efficiency and causing great waste of labor costs and time costs. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a double-adjustment double-layer coating die.

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

[0005] A double-adjustment double-layer coating die includes an upper die, a middle die, a lower die, upper gaskets, lower gaskets, a plurality of upper T-shaped rods, a plurality of middle T-shaped rods, a plurality of upper driving mechanisms, and a plurality of middle driving mechanisms. The middle die is hinged to the lower die, the upper die is hinged to the middle die, the upper gaskets are arranged between the upper die and the middle die, the lower gaskets are arranged between the middle die and the lower die, an upper cavity is provided at the top of the middle die, a middle feed port communicating with the upper cavity is provided at the back of the middle die, an upper die lip is formed at the front end of the upper die and the middle die, an upper channel communicating the upper die lip with the upper cavity is formed between the upper die and the middle die, a lower cavity is provided at the top of the lower die, a lower feed port communicating with the lower cavity is provided at the back of the lower die, a lower die lip is formed at the front end of the middle die and the lower die, a lower channel communicating the lower die lip with the lower cavity is formed between the middle die and the lower die, the upper T-shaped rods are vertically slidably arranged on the upper die, and their bottoms extend into the upper channel. The upper driving mechanisms are installed on the upper die, and their driving ends are connected to the upper T-shaped rods and drive the upper T-shaped rods to move up and down. A through groove is provided in the middle die perpendicular to its length direction, the middle T-shaped rods are slidably installed in the through groove, and their front ends extend into the lower channel. The middle driving mechanisms are installed on the middle die, and their driving ends are connected to the middle T-shaped rods.

[0006] Preferably, an upper pressing strip is provided at the bottom of the upper gasket, and the upper pressing strip extends into the upper cavity. A lower pressing strip is provided at the bottom of the lower gasket, and the lower pressing strip extends into the lower cavity.

[0007] Preferably, a plurality of the upper T-shaped rods are equidistantly distributed on the upper die.

[0008] Preferably, the lower channel is inclined, and the front end of the middle T-shaped rod is inclined, and its inclined surface is parallel to the lower channel.

[0009] Preferably, a plurality of the middle T-shaped rods are equidistantly distributed on the middle die.

[0010] Preferably, the upper driving mechanism is a micrometer or a direct drive mechanism of a servo motor.

[0011] Preferably, the middle driving mechanism is a micrometer or a direct drive mechanism of a servo motor.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention uses the middle driving mechanism to drive the middle T-shaped rod to move in the through groove, so that the middle T-shaped rod adjusts the flow rate in the lower channel. Coupled with the upper driving mechanism driving the upper T-shaped rod to control the flow rate of the upper channel, the double-layer coating adjustment of the coating die head can be realized; The upper and middle die adjustment methods are adopted to avoid the problems of complex structure, inconvenient disassembly and assembly, and difficult maintenance brought by the traditional upper and lower die adjustment methods, effectively improving the production efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the overall structure of the double-adjustment double-layer coating die head of the present invention;

[0015] Figure 2 It is another schematic diagram of the overall structure of the double-adjustment double-layer coating die head of the present invention;

[0016] Figure 3 It is a sectional view of the double-adjustment double-layer coating die head of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] In order to illustrate the technical solutions described in the present utility model, the following will be illustrated through specific embodiments.

[0019] Embodiment 1

[0020] As Figures 1 to 3 shown, the double-adjustable double-layer coating die head of this embodiment includes an upper die 1, a middle die 2, a lower die 3, an upper gasket 4, a lower gasket 5, a plurality of upper T-shaped rods 6, a plurality of middle T-shaped rods 7, a plurality of upper driving mechanisms 8 and a plurality of middle driving mechanisms 9. The middle die 2 is hinged to the lower die 3, the upper die 1 is hinged to the middle die 2, the upper gasket 4 is arranged between the upper die 1 and the middle die 2, the lower gasket 5 is arranged between the middle die 2 and the lower die 3. An upper cavity 21 is provided at the top of the middle die 2, and a middle feed port 22 communicating with the upper cavity 21 is provided at the back of the middle die 2. The front ends of the upper die 1 and the middle die 2 form an upper die orifice 11, and an upper channel 12 communicating the upper die orifice 11 with the upper cavity 21 is formed between the upper die 1 and the middle die 2. A lower cavity 31 is provided at the top of the lower die 3, and a lower feed port 32 communicating with the lower cavity 31 is provided at the back of the lower die 3. The front ends of the middle die 2 and the lower die 3 form a lower die orifice 33, and a lower channel 34 communicating the lower die orifice 33 with the lower cavity 31 is formed between the middle die 2 and the lower die 3. The upper T-shaped rods 6 are vertically slidably arranged on the upper die 1, and their bottoms extend into the upper channel 12. The upper driving mechanisms 8 are installed on the upper die 1, and their driving ends are connected to the upper T-shaped rods 6 and drive the upper T-shaped rods 6 to move up and down. A through groove is provided in the middle die 2 perpendicular to its length direction, and the middle T-shaped rods 7 are slidably installed in the through groove, and their front ends extend into the lower channel 34. The middle driving mechanisms 8 are installed on the middle die 2, and their driving ends are connected to the middle T-shaped rods 7. During operation, the middle driving mechanism 9 drives the middle T-shaped rods 7 to move in the through groove, so that the middle T-shaped rods 7 adjust the flow rate in the lower channel 34. In addition, the upper driving mechanism 8 drives the upper T-shaped rods 4 to control the flow rate in the upper channel 12. The double-adjustable double-layer coating die head of this embodiment can realize the double-layer coating adjustment of the coating die head; adopting the upper and middle die adjustment method can avoid the problems of complex structure, inconvenient disassembly and assembly and difficult maintenance brought by the traditional upper and lower die adjustment method, effectively improving the production efficiency and saving costs.

[0021] In this embodiment, an upper pressing strip 41 is provided at the bottom of the upper gasket 4. The upper pressing strip 41 extends into the upper cavity 21. A lower pressing strip 51 is provided at the bottom of the lower gasket 5. The lower pressing strip 51 extends into the lower cavity 31, so that the coating liquid flows from the rear part of the upper cavity 21 and the lower cavity 31 to the front part through the bottom and both sides thereof, making the flow of the coating liquid more uniform.

[0022] In this embodiment, a plurality of the upper T-shaped rods 6 are equidistantly distributed on the upper die 1, making the flow rate adjustment of the upper T-shaped rods 6 to the upper channel 12 more uniform. The lower channel 34 is inclined, and the front end of the middle T-shaped rod 7 is inclined, and its inclined surface is parallel to the lower channel 34, facilitating the middle T-shaped rod 7 to extend into the lower channel 34 to adjust the flow rate in the lower channel 34. A plurality of the middle T-shaped rods 7 are equidistantly distributed on the middle die 2, making the flow rate adjustment of the middle T-shaped rods 7 to the lower channel 34 more uniform. As required, the upper driving mechanism 8 is a micrometer or a servo motor direct drive mechanism, and the middle driving mechanism 9 is a micrometer or a servo motor direct drive mechanism. The servo motor direct drive mechanism is a linear drive mechanism driven by a servo motor, such as an electric cylinder.

[0023] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-adjustable double-layer coating die head, characterized in that: The invention comprises an upper die, a middle die, a lower die, an upper gasket, a lower gasket, a plurality of upper T-shaped rods, a plurality of middle T-shaped rods, a plurality of upper driving mechanisms and a plurality of middle driving mechanisms, wherein the middle die is hinged on the lower die, the upper die is hinged on the middle die, the upper gasket is arranged between the upper die and the middle die, the lower gasket is arranged between the middle die and the lower die, an upper cavity is arranged on the top of the middle die, a middle feed port connected with the upper cavity is arranged on the back of the middle die, an upper die mouth is formed at the front end of the upper die and the middle die, an upper channel connected with the upper die mouth and the upper cavity is formed between the upper die and the middle die, a lower cavity is arranged on the top of the lower die, and a lower feed port is arranged on the back of the middle die. A lower feed port connected to the lower cavity is provided on the back of the mold, a lower mold mouth is formed with the front end of the middle mold and the lower mold, a lower channel connected to the lower mold mouth and the lower mold cavity is formed between the middle mold and the lower mold, the upper T-bar is vertically slidably arranged on the upper mold, and its bottom extends into the upper channel, the upper driving mechanism is installed on the upper mold, and its driving end is connected to the upper T-bar and drives the upper T-bar to move up and down, the middle mold is provided with a through groove perpendicular to its length direction, the middle T-bar is slidably installed in the through groove, and its front end extends into the lower channel, the middle driving mechanism is installed on the middle mold, and its driving end is connected to the middle T-bar.

2. The double-adjustable double-layer coating die according to claim 1, characterized in that: An upper press strip is provided at the bottom of the upper gasket, and the upper press strip extends into the upper cavity. A lower press strip is provided at the bottom of the lower gasket, and the lower press strip extends into the lower cavity.

3. The double-adjustable double-layer coating die according to claim 1 or 2, characterized in that: A plurality of upper T-shaped rods are distributed at equal distances on the upper mold.

4. The double-adjustable double-layer coating die according to claim 1 or 2, characterized in that: The lower channel is inclined, and the front end of the middle T-shaped rod is inclined, with the inclined surface thereof being parallel to the lower channel.

5. The double-adjustable double-layer coating die according to claim 1 or 2, characterized in that: A plurality of middle T-shaped rods are distributed at equal distances on the middle mold.

6. The double-adjustable double-layer coating die according to claim 1 or 2, characterized in that: The upper driving mechanism is a micrometer or a servo motor direct driving mechanism.

7. The double-adjustable double-layer coating die according to claim 1 or 2, characterized in that: The intermediate driving mechanism is a micrometer or a servo motor direct driving mechanism.

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