Three-layer coating die head

Abstract

The invention 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] The invention relates to the technical field of coating die heads, in particular to a three-layer coating die head. Background Art

[0002] The coating die is a precision device that is designed to control and distribute the slurry evenly on the surface of the substrate. As the performance of products continues to improve, new functional requirements are introduced. Different coatings have different functionalities, which requires the die to be able to perform multi-layer coating at the same time. Summary of the invention

[0003] In view of the above problems, the present invention aims to provide a three-layer coating die head, which can extrude three superimposed layers of coating and evenly coat them on a substrate.

[0004] The technical solution of the present 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, and the rear area between the upper die body and the upper middle die, the rear area between the upper middle die and the lower middle die, and the rear area between the lower middle die and the lower die body are all provided with gaskets; the front area between the upper die body and the upper middle die is provided with a first extrusion channel, the front area between the upper middle die and the lower middle die is provided with a second extrusion channel, and the front area between the lower middle die and the lower die body is provided with a third extrusion channel; the rear part of the upper middle die is provided with a first feed channel, and the intersection of the first feed channel and the first extrusion channel is provided with a There is a first buffer groove, and a second buffer groove is arranged on the top surface of the upper middle die in the first extrusion channel; a second feed channel is arranged at the rear of the lower middle die, and a third buffer groove is arranged at the junction of the second feed channel and the second extrusion channel, and a fourth buffer groove is arranged on the top surface of the lower middle die in the second extrusion channel; a third feed channel is arranged at the rear of the lower die body, and a fifth buffer groove is arranged at the junction of the third feed channel and the third extrusion channel, and a sixth buffer groove is arranged on the top surface of the lower middle 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 head outlet.

[0005] Preferably, a first deformation groove and a first mounting hole are provided at the front end of the upper mold body, and 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 of the front end of the upper mold body. The push-pull rod fine-tuning mechanism pushes and pulls the die lip position of the upper mold body to fine-tune the first extrusion channel gap.

[0006] Preferably, a second deformation groove and a second mounting hole are provided at the front end of the lower mold body, and 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 of the front end of the lower mold body. The differential bolt fine-tuning mechanism pushes and pulls the die lip position of the lower mold body to fine-tune the gap of the third extrusion channel.

[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 surface of the upper mold body is connected to the first articulated seat by screws, the rear side surface of the upper middle mold is connected to the second articulated seat by screws, the rear side surface of the lower middle mold is connected to the third articulated seat by screws, and the rear side surface of the lower mold body is connected to the fourth articulated seat by screws, the first articulated seat and the second articulated seat, the second articulated seat and the third articulated seat, and the third articulated seat and the fourth articulated seat are all rotatably connected to each other through articulated shafts, and a long rod wrench is connected to the top surface of the first articulated seat.

[0008] Preferably, the first articulated seat, the second articulated seat, the third articulated seat and the fourth articulated seat are connected to form an articulated seat group. There are two articulated seat groups, one is arranged in the left area of ​​the mold body, and the other is arranged in the right area of ​​the mold head.

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

[0010] The present invention can extrude three layers of superimposed coating and evenly coat them on a substrate, can fine-tune the gap of the extrusion channel, and can realize direct manual opening of two mold bodies by setting a rear hinge seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of another perspective of the present invention; Figure 3 It is a schematic diagram of the internal cross-sectional structure of the present invention; Figure 4 An exploded view of the present invention; Among them: 1—upper mold body; 101—first deformation groove; 102—first mounting hole; 1a—first hinge seat; 2—upper middle mold; 21—first feed channel; 22—first buffer groove; 23—second buffer groove; 2a—second hinge seat; 3—lower middle mold; 31—second feed channel; 32—third buffer groove; 33—fourth buffer groove; 3a—third hinge seat; 4—lower mold body; 41—third feed channel; 42—fifth buffer groove; 43—sixth buffer groove; 44—second deformation groove; 45—second mounting hole; 4a—fourth hinge seat; 5—gasket; 6—first extrusion channel; 7—second extrusion channel; 8—third extrusion channel; 9—push-pull rod fine-tuning mechanism; 10—differential bolt fine-tuning mechanism; 11—long rod wrench; 12—locking module. DETAILED DESCRIPTION

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] 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, wherein 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 a gasket 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 part of the upper middle die 2 is provided with a first feed channel 21, and a first buffer groove 2 is provided at the intersection of the first feed channel 21 and the first extrusion channel 6 2, the top surface of the upper middle mold 2 in the first extrusion channel 6 is provided with a second buffer groove 23; the rear part of the lower middle mold 3 is provided with a second feed channel 31, the intersection of the second feed channel 31 and the second extrusion channel 7 is provided with a third buffer groove 32, and the top surface of the lower middle mold 3 in the second extrusion channel 7 is provided with a fourth buffer groove 33; the rear part of the lower mold body 4 is provided with a third feed channel 41, the intersection of the third feed channel 41 and the third extrusion channel 8 is provided with a fifth buffer groove 42, and the top surface of the lower middle mold 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 superimposed structure at the front end head outlet. The gap of each extrusion channel is mainly determined by the height of its corresponding gasket 5.

[0014] On the basis of the above scheme, a first deformation groove 101 and a first mounting hole 102 are provided at the front end of the upper mold body 1, and a push-pull rod fine-tuning structure 9 is provided in the first mounting hole 102. The pull rod at the front end of the push-pull rod fine-tuning mechanism 9 passes through the first deformation groove 101 and is connected to the die lip of the front end of the upper mold body 1. The push-pull rod fine-tuning mechanism 9 pushes and pulls the die lip position of the upper mold body 1 to fine-tune the gap of the first extrusion channel 6.

[0015] In addition, a second deformation groove 44 and a second mounting hole 45 are provided at the front end of the lower mold body 4, and 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 of the front end of the lower mold body 4. The differential bolt fine-tuning mechanism 10 pushes and pulls the die lip position of the lower mold body 4 to fine-tune the gap of the third extrusion channel 8.

[0016] In addition, 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 with a first hinge seat 1a by screws, the rear side of the upper middle mold 2 is connected with a second hinge seat 2a by screws, the rear side of the lower middle mold 3 is connected with a third hinge seat 3a by screws, and the rear side of the lower mold body 4 is connected with 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 through a hinge shaft, and a long rod wrench 11 is connected to the top surface of the first hinge seat 1a. The setting of the hinge seat allows the upper mold body 1, the upper middle mold 2, and the lower middle mold 3 to be opened in sequence by rotating the long rod wrench 11 after removing the locking screws and the locking module 12.

[0017] Specifically, the first articulated seat 1a, the second articulated seat 2a, the third articulated seat 3a and the fourth articulated seat 4a are connected to form an articulated seat group. There are two articulated seat groups, one is arranged in the left area of ​​the mold body, and the other is arranged in the right area of ​​the mold head.

[0018] Furthermore, a plurality of locking modules 12 are connected between the upper mold body 1 and the rear side surface of the upper middle mold 2 , between the upper middle mold 2 and the rear side surface of the lower middle mold 3 , and between the lower middle mold 3 and the rear side surface of the lower mold body 4 .

[0019] The working principle of the present invention is as follows: 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 the rear side thereof. Material A enters from the first feed channel 21, fills the first buffer groove 22, and then enters the first extrusion channel 6 uniformly forward in different width directions. During the forward flow, it enters the second buffer groove 23 for further buffering, and then uniformly extrudes forward 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 uniformly forward in different width directions. During the forward flow, it enters the fourth buffer groove 33 for further buffering, and then uniformly extrudes forward 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 uniformly forward in different width directions. During the forward flow, it enters the sixth buffer groove 43 for further buffering, and then uniformly extrudes forward through the third extrusion channel 8. After extrusion, material A, material B, and material C merge at the die lip to form a three-layer superimposed coating of upper, middle, and lower layers, which is evenly coated on the substrate.

[0020] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the invention. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A three-layer coating die head, characterized in that: It comprises an upper mold body (1), an upper middle mold (2), a lower middle mold (3), and a lower mold body (4), wherein a gasket (5) is provided at the rear region between the upper mold body (1) and the upper middle mold (2), the rear region between the upper middle mold (2) and the lower middle mold (3), and the rear region between the lower middle mold (3) and the lower mold body (4); A first extrusion channel (6) is arranged in the front area between the upper mold body (1) and the upper middle mold (2), a second extrusion channel (7) is arranged in the front area between the upper middle mold (2) and the lower middle mold (3), and a third extrusion channel (8) is arranged in the front area between the lower middle mold (3) and the lower mold body (4); The upper middle die (2) is provided with a first feed channel (21) at the rear, a first buffer groove (22) is provided at the intersection of the first feed channel (21) and the first extrusion channel (6), and a second buffer groove (23) is provided on the top surface of the upper middle die (2) in the first extrusion channel (6); the lower middle die (3) is provided with a second feed channel (31) at the rear, a third buffer groove (32) is provided at the intersection of the second feed channel (31) and the second extrusion channel (7), and a fourth buffer groove (33) is provided on the top surface of the lower middle die (3) in the second extrusion channel (7); the lower die body (4) is provided with a third feed channel (41) at the rear, a fifth buffer groove (42) is provided at the intersection of the third feed channel (41) and the third extrusion channel (8), and a sixth buffer groove (43) is provided on the top surface of the lower middle die (3) in 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 superimposed structure at the front end head outlet.

2. A three-layer coating die according to claim 1, characterized in that: The front end of the upper mold 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-tuning structure (9); the pull rod at the front end of the push-pull rod fine-tuning mechanism (9) passes through the first deformation groove (101) and is connected to the die lip at the front end of the upper mold body (1); the push-pull rod fine-tuning mechanism (9) pushes and pulls the die lip position of the upper mold body (1) to fine-tune the gap of the first extrusion channel (6).

3. A three-layer coating die according to claim 1, characterized in that: The front end of the lower mold body (4) is provided with a second deformation groove (44) and a second mounting hole (45), and the second mounting hole (45) is provided with a differential bolt fine-tuning structure (10). 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 differential bolt fine-tuning mechanism (10) pushes and pulls the die lip position of the lower mold body (4) to fine-tune the gap of the third extrusion channel (8).

4. A three-layer coating die according to claim 1, characterized in that: 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, and the top surface of the first hinge seat (1a) is connected to a long rod wrench (11).

5. A three-layer coating die according to claim 4, characterized in that: The first articulated seat (1a), the second articulated seat (2a), the third articulated seat (3a) and the fourth articulated seat (4a) are connected to form an articulated seat group. There are two articulated seat groups, one is arranged in the left area of ​​the mold body and the other is arranged in the right area of ​​the mold head.

6. A three-layer coating die according to claim 1, characterized in that: A plurality of locking modules (12) are connected between the upper mold body (1) and the rear side surface of the upper middle mold (2), between the upper middle mold (2) and the rear side surface of the lower middle mold (3), and between the lower middle mold (3) and the rear side surface of the lower mold body (4).

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