Three-layer coating die head

Abstract

The utility model provides a three-layer coating die head. The three-layer coating die head comprises an upper die body, an upper middle die, a lower middle die, a lower die body, a gasket, a first extrusion channel, a second extrusion channel and a third extrusion channel, a first feeding channel is arranged at the rear part of the upper middle die, a first buffer groove is formed in the joint of the first feeding channel and the first extrusion channel, and a second buffer groove is formed in the top surface of the upper middle die in the first extrusion channel; a second feeding channel is arranged at the rear part of the lower middle die, a third buffer groove is formed in the joint of the second feeding channel and the second extrusion channel, and a fourth buffer groove is formed in the top surface of the lower middle die in the second extrusion channel; a third feeding channel is arranged on the rear portion of the lower die body, a fifth buffer groove is formed in the joint of the third feeding channel and the third extrusion channel, and a sixth buffer groove is formed in the top face of the lower middle die in the third extrusion channel. According to the invention, three layers of overlapped coatings can be extruded and uniformly coated on a base material.

Description

Technical Field

[0001] This invention relates to the field of coating die technology, and in particular to a three-layer coating die. Background Technology

[0002] A coating die is a precision device designed to control and distribute slurry evenly onto the surface of a substrate. As product performance continues to improve, new functional requirements are introduced, and different coatings have different functionalities, thus requiring the die to be capable of performing multi-layer coatings simultaneously. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a three-layer coating die head that can extrude three superimposed coatings to uniformly coat a substrate.

[0004] The technical solution of this invention is a three-layer coating die head, characterized in that: it includes an upper die body, an upper middle die, a lower middle die, and a lower die body; gaskets are provided in the rear regions between the upper die body and the upper middle die, between the upper middle die and the lower middle die, and between the lower middle die and the lower die body; a first extrusion channel is provided in the front region between the upper die body and the upper middle die, a second extrusion channel is provided in the front region between the upper middle die and the lower middle die, and a third extrusion channel is provided in the front region between the lower middle die and the lower die body; a first feeding channel is provided at the rear of the upper middle die, and a [missing information - likely a design feature] is provided at the junction of the first feeding channel and the first extrusion channel. The device has a first buffer groove, and a second buffer groove is provided on the top surface of the upper die in the first extrusion channel; a second feeding channel is provided at the rear of the lower die, and a third buffer groove is provided at the junction of the second feeding channel and the second extrusion channel; a fourth buffer groove is provided on the top surface of the lower die in the second extrusion channel; a third feeding channel is provided at the rear of the lower die body, and a fifth buffer groove is provided at the junction of the third feeding channel and the third extrusion channel; a sixth buffer groove is provided on the top surface of the lower die in the third extrusion channel; the first extrusion channel, the second extrusion channel, and the third extrusion channel are arranged at an acute angle and form an upper and lower superimposed structure at the front end outlet.

[0005] Preferably, the front end of the upper mold body is provided with a first deformation groove and a first mounting hole. A push-pull rod fine-tuning structure is provided in the first mounting hole. The pull rod at the front end of the push-pull rod fine-tuning mechanism passes through the first deformation groove and is connected to the die lip at the front end of the upper mold body. The gap of the first extrusion channel is fine-tuned by pushing and pulling the die lip position of the upper mold body through the push-pull rod fine-tuning mechanism.

[0006] Preferably, the lower mold body has a second deformation groove and a second mounting hole at its front end. A differential bolt fine-tuning structure is provided in the second mounting hole. The pull rod at the front end of the differential bolt fine-tuning mechanism passes through the second deformation groove and is connected to the die lip at the front end of the lower mold body. The gap of the third extrusion channel is finely adjusted by pushing and pulling the die lip position of the lower mold body through the differential bolt fine-tuning mechanism.

[0007] Preferably, the upper mold body and the upper middle mold, the upper middle mold and the lower middle mold, and the lower middle mold and the lower mold body are all connected and fixed by a series of locking screws. The rear side of the upper mold body is connected to a first hinge seat by screws, the rear side of the upper middle mold is connected to a second hinge seat by screws, the rear side of the lower middle mold is connected to a third hinge seat by screws, and the rear side of the lower mold body is connected to a fourth hinge seat by screws. The first hinge seat and the second hinge seat, the second hinge seat and the third hinge seat, and the third hinge seat and the fourth hinge seat are all rotatably connected to each other by hinge shafts. A long-handled wrench is connected to the top surface of the first hinge seat.

[0008] Preferably, the first hinge seat, the second hinge seat, the third hinge seat, and the fourth hinge seat are connected to form a hinge seat group. There are two such hinge seat groups, one located in the left side region of the mold body and the other located in the right side region of the mold head.

[0009] Preferably, multiple locking modules are connected between the upper mold body and the rear side of the upper middle mold, between the upper middle mold and the rear side of the lower middle mold, and between the lower middle mold and the rear side of the lower mold body.

[0010] This invention can extrude three superimposed coatings evenly onto a substrate, can finely adjust the gap of the extrusion channel, and allows for manual opening of the two molds directly through the rear hinge seat. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention;

[0012] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0013] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the present invention;

[0014] Figure 4 This is an exploded view of the present invention;

[0015] Wherein: 1—Upper mold body; 101—First deformation groove; 102—First mounting hole; 1a—First hinge seat; 2—Upper middle mold; 21—First feeding channel; 22—First buffer groove; 23—Second buffer groove; 2a—Second hinge seat; 3—Lower middle mold; 31—Second feeding channel; 32—Third buffer groove; 33—Fourth buffer groove; 3a—Third hinge seat; 4—Lower mold body; 41—Third feeding channel; 42—Fifth buffer groove; 43—Sixth buffer groove; 44—Second deformation groove; 45—Second mounting hole; 4a—Fourth hinge seat; 5—Shim; 6—First extrusion channel; 7—Second extrusion channel; 8—Third extrusion channel; 9—Push-pull rod fine adjustment mechanism; 10—Differential bolt fine adjustment mechanism; 11—Long rod wrench; 12—Locking module. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] like Figures 1 to 4 As shown, the present invention provides a three-layer coating die head, including an upper die body 1, an upper middle die 2, a lower middle die 3, and a lower die body 4. Gaskets 5 are provided in the rear regions between the upper die body 1 and the upper middle die 2, between the upper middle die 2 and the lower middle die 3, and between the lower middle die 3 and the lower die body 4. A first extrusion channel 6 is provided in the front region between the upper die body 1 and the upper middle die 2; a second extrusion channel 7 is provided in the front region between the upper middle die 2 and the lower middle die 3; and a third extrusion channel 8 is provided in the front region between the lower middle die 3 and the lower die body 4. A first feeding channel 21 is provided at the rear of the upper middle die 2, and a first buffer groove 2 is provided at the junction of the first feeding channel 21 and the first extrusion channel 6. 2. A second buffer groove 23 is provided on the top surface of the upper die 2 within the first extrusion channel 6; a second feeding channel 31 is provided at the rear of the lower die 3, a third buffer groove 32 is provided at the junction of the second feeding channel 31 and the second extrusion channel 7, and a fourth buffer groove 33 is provided on the top surface of the lower die 3 within the second extrusion channel 7; a third feeding channel 41 is provided at the rear of the lower die body 4, a fifth buffer groove 42 is provided at the junction of the third feeding channel 41 and the third extrusion channel 8, and a sixth buffer groove 43 is provided on the top surface of the lower die 3 within the third extrusion channel 8; the first extrusion channel 6, the second extrusion channel 7, and the third extrusion channel 8 are arranged at an acute angle and form an upper and lower stacked structure at the front end outlet. The gap between each extrusion channel is mainly determined by the height of its corresponding gasket 5.

[0018] Based on the above scheme, the front end of the upper mold body 1 is provided with a first deformation groove 101 and a first mounting hole 102. A push-pull rod fine adjustment structure 9 is provided in the first mounting hole 102. The pull rod at the front end of the push-pull rod fine adjustment mechanism 9 passes through the first deformation groove 101 and is connected to the mold lip at the front end of the upper mold body 1. The gap of the first extrusion channel 6 is finely adjusted by pushing and pulling the position of the mold lip of the upper mold body 1 through the push-pull rod fine adjustment mechanism 9.

[0019] In addition, the lower mold body 4 is provided with a second deformation groove 44 and a second mounting hole 45 at its front end. A differential bolt fine-tuning structure 10 is provided in the second mounting hole 45. The pull rod at the front end of the differential bolt fine-tuning mechanism 10 passes through the second deformation groove 44 and is connected to the die lip at the front end of the lower mold body 4. The gap of the third extrusion channel 8 is fine-tuned by pushing and pulling the die lip position of the lower mold body 4 through the differential bolt fine-tuning mechanism 10.

[0020] Furthermore, the upper mold body 1 and the upper middle mold 2, the upper middle mold 2 and the lower middle mold 3, and the lower middle mold 3 and the lower mold body 4 are all connected and fixed by a series of locking screws. The rear side of the upper mold body 1 is connected to a first hinge seat 1a by screws, the rear side of the upper middle mold 2 is connected to a second hinge seat 2a by screws, the rear side of the lower middle mold 3 is connected to a third hinge seat 3a by screws, and the rear side of the lower mold body 4 is connected to a fourth hinge seat 4a by screws. The first hinge seat 1a and the second hinge seat 2a, the second hinge seat 2a and the third hinge seat 3a, and the third hinge seat 3a and the fourth hinge seat 4a are all rotatably connected to each other by hinge shafts. A long-handled wrench 11 is connected to the top surface of the first hinge seat 1a. With the hinge seats installed, after removing the locking screws and the locking module 12, the upper mold body 1, the upper middle mold 2, and the lower middle mold 3 can be opened sequentially by rotating the long-handled wrench 11.

[0021] Specifically, the first hinge seat 1a, the second hinge seat 2a, the third hinge seat 3a, and the fourth hinge seat 4a are connected to form a hinge seat group. There are two such hinge seat groups, one located in the left side region of the mold body and the other located in the right side region of the mold head.

[0022] Furthermore, multiple locking modules 12 are connected between the rear sides of the upper mold body 1 and the upper middle mold 2, between the rear sides of the upper middle mold 2 and the lower middle mold 3, and between the lower middle mold 3 and the rear side of the lower mold body 4.

[0023] The working principle of this invention is as follows:

[0024] The gaps between the first extrusion channel 6, the second extrusion channel 7, and the third extrusion channel 8 are mainly determined by the height of the corresponding gasket 5 on their rear sides. Material A enters from the first feed channel 21, fills the first buffer groove 22, and then enters the first extrusion channel 6 evenly in different width directions. During its forward flow, it enters the second buffer groove 23 for further buffering, and then is evenly extruded through the first extrusion channel 6. Material B enters from the second feed channel 31, fills the third buffer groove 32, and then enters the second extrusion channel 7 evenly in different width directions. During its forward flow, it enters the fourth buffer groove 33 for further buffering, and then is evenly extruded through the second extrusion channel 7. Material C enters from the third feed channel 41, fills the fifth buffer groove 42, and then enters the third extrusion channel 8 evenly in different width directions. During its forward flow, it enters the sixth buffer groove 43 for further buffering, and then is evenly extruded through the third extrusion channel 8. After extrusion, materials A, B, and C converge at the die lip to form a three-layer superimposed coating, which is evenly coated on the substrate.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A three-layer coating die characterized by: It comprises an upper die body (1), an upper middle die (2), a lower middle die (3), and a lower die body (4). The rear area between the upper die body (1) and the upper middle die (2), the rear area between the upper middle die (2) and the lower middle die (3), and the rear area between the lower middle die (3) and the lower die body (4) are all provided with gaskets (5). The front area between the upper die body (1) and the upper middle die (2) is provided with a first extrusion channel (6), the front area between the upper middle die (2) and the lower middle die (3) is provided with a second extrusion channel (7), and the front area between the lower middle die (3) and the lower die body (4) is provided with a third extrusion channel (8). The rear of the upper middle die (2) is provided with a first feeding channel (21), the intersection between the first feeding channel (21) and the first extrusion channel (6) is provided with a first buffer groove (22), and the top surface of the upper middle die (2) in the first extrusion channel (6) is provided with a second buffer groove (23). The rear of the lower middle die (3) is provided with a second feeding channel (31), the intersection between the second feeding channel (31) and the second extrusion channel (7) is provided with a third buffer groove (32), and the top surface of the lower middle die (3) in the second extrusion channel (7) is provided with a fourth buffer groove (33). The rear of the lower die body (4) is provided with a third feeding channel (41), the intersection between the third feeding channel (41) and the third extrusion channel (8) is provided with a fifth buffer groove (42), and the top surface of the lower middle die (3) in the third extrusion channel (8) is provided with a sixth buffer groove (43). The first extrusion channel (6), the second extrusion channel (7), and the third extrusion channel (8) are arranged at an acute angle and form an upper and lower superposition structure at the front end outlet.

2. A three-layer coating die according to claim 1, characterized in that: The front end of the upper die body (1) is provided with a first deformation groove (101) and a first mounting hole (102), the first mounting hole (102) is provided with a push-pull rod fine adjustment mechanism (9), the front end of the push-pull rod fine adjustment mechanism (9) is connected to the die lip of the front end of the upper die body (1) after passing through the first deformation groove (101), and the gap of the first extrusion channel (6) is fine adjusted by pushing and pulling the die lip position of the upper die body (1) through the push-pull rod fine adjustment mechanism (9).

3. A three-layer coating die according to claim 1, characterized in that: The front end of the lower die body (4) is provided with a second deformation groove (44) and a second mounting hole (45), the second mounting hole (45) is provided with a differential bolt fine adjustment mechanism (10), the front end of the differential bolt fine adjustment mechanism (10) is connected to the die lip of the front end of the lower die body (4) after passing through the second deformation groove (44), and the gap of the third extrusion channel (8) is fine adjusted by pushing and pulling the die lip position of the lower die body (4) through the differential bolt fine adjustment mechanism (10).

4. The three-layer coating die of claim 1, wherein: The upper die body (1) and the upper middle die (2), the upper middle die (2) and the lower middle die (3), the lower middle die (3) and the lower die body (4) are connected and fixed by a series of locking screws, the rear side of the upper die body (1) is connected with the first hinged seat (1a) by screws, the rear side of the upper middle die (2) is connected with the second hinged seat (2a) by screws, the rear side of the lower middle die (3) is connected with the third hinged seat (3a) by screws, the rear side of the lower die body (4) is connected with the fourth hinged seat (4a) by screws, the first hinged seat (1a) and the second hinged seat (2a), the second hinged seat (2a) and the third hinged seat (3a), the third hinged seat (3a) and the fourth hinged seat (4a) are rotatably connected by the hinge shaft, and the top surface of the first hinged seat (1a) is connected with the long rod wrench (11).

5. A three-layer coating die according to claim 4, characterized in that: The first hinged seat (1a), the second hinged seat (2a), the third hinged seat (3a) and the fourth hinged seat (4a) are connected into a hinged seat group, the number of the hinged seat group is two, one is arranged on the left side of the die body, and the other is arranged on the right side of the die head.

6. The three-layer coating die of claim 1, wherein: The rear side of the upper die body (1) and the upper middle die (2), the rear side of the upper middle die (2) and the lower middle die (3), and the rear side of the lower middle die (3) and the lower die body (4) are connected with a plurality of locking modules (12).

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