Double-layer coating die head

Abstract

The invention provides a double-layer coating die head which comprises an upper die body, a middle die body, a lower die body and a gasket which are connected with one another, a first extrusion channel is arranged in a front area between the middle die body and the upper die body, and a second extrusion channel is arranged in a front area between the middle die body and the lower die body; a first feeding channel is arranged on the rear side of the middle die body, a first buffer groove is formed in the joint of the front end of the first feeding channel and the first extrusion channel, and a second buffer groove is formed in the top surface of the middle die body in the first extrusion channel; a second feeding channel is arranged on the rear side of the lower die body, a third buffer groove is formed in the joint of the front end of the second feeding channel and the second extrusion channel, and a fourth buffer groove is formed in the top surface of the lower die body in the second extrusion channel; an acute included angle is formed between the first extrusion channel and the second extrusion channel, and an up-down stacked structure is formed at the outlet position of the front end head. According to the invention, two 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 double-layer coating die head. Background Art

[0002] The coating die is a precision device that is designed to control and distribute the molten raw materials evenly on the surface of the substrate. As the performance of products continues to develop and 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 double-layer coating die head, which can extrude two superimposed coating layers and evenly coat them on a substrate.

[0004] The technical solution of the present invention is a double-layer coating die head, comprising an upper die body, a middle die body and a lower die body which are connected to each other, the rear area between the upper die body and the middle die body, and the rear area between the middle die body and the lower die body are both provided with gaskets, the front area between the middle die body and the upper die body is provided with a first extrusion channel, and the front area between the middle die body and the lower die body is provided with a second extrusion channel; a first feed channel is provided on the rear side of the middle die body, a first buffer groove is provided at the intersection of the front end of the first feed channel and the first extrusion channel, and a second buffer groove is provided on the top surface of the middle die body in the first extrusion channel; a second feed channel is provided on the rear side of the lower die body, a third buffer groove is provided at the intersection of the front end of the second feed channel and the second extrusion channel, and a fourth buffer groove is provided on the top surface of the lower die body in the second extrusion channel; an acute angle is formed between the first extrusion channel and the second extrusion channel, and an upper and lower superimposed structure is formed at the front end head outlet position.

[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 second extrusion channel gap.

[0007] Preferably, the upper mold body and the middle mold body are connected and fixed by a series of locking screws, the lower mold body and the middle mold body are connected and fixed by a series of locking screws, the rear side of the upper mold body is connected to a first articulated seat by screws, the rear side of the middle mold body is connected to a second articulated seat by screws, and the rear side of the lower mold body is connected to a third articulated seat by screws, the first articulated seat and the second articulated seat are rotatably connected to each other by an articulated shaft, the second articulated seat and the third articulated seat are rotatably connected to each other by an articulated shaft, 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 and the third articulated seat are connected to form an articulated seat group. The number of the articulated seat groups is four, two of which are arranged in the left area of ​​the mold body and two are arranged in the right area of ​​the die head.

[0009] Preferably, an adjusting gasket is provided between the first articulated seat and the upper mold body, an adjusting gasket is provided between the second articulated seat and the middle mold body, and an adjusting gasket is provided between the third articulated seat and the lower mold body.

[0010] Preferably, a plurality of locking modules are connected between the upper mold body and the rear side surface of the middle mold body, and between the middle mold body and the rear side surface of the lower mold body.

[0011] The present invention can extrude two 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

[0012] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure from another perspective; 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; 11—first deformation groove; 12—first mounting hole; 1a—first hinge seat; 2—middle mold body; 21—first feed channel; 22—first buffer groove; 23—second buffer groove; 2a—second hinge seat; 3—lower mold body; 31—second feed channel; 32—third buffer groove; 33—fourth buffer groove; 34—second deformation groove; 35—second mounting hole; 3a—third hinge seat; 4—gasket; 5—first extrusion channel; 6—second extrusion channel; 7—push-pull rod fine-tuning mechanism; 8—differential bolt fine-tuning mechanism; 9—long rod wrench; 10—locking module. DETAILED DESCRIPTION

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0014] like Figures 1 to 4 As shown, the present invention provides a double-layer coating die head, comprising an upper die body 1, a middle die body 2 and a lower die body 3 connected to each other, a gasket 4 is arranged in the rear area between the upper die body 1 and the middle die body 2, and in the rear area between the middle die body 2 and the lower die body 3, a first extrusion channel 5 is arranged in the front area between the middle die body 2 and the upper die body 1, and a second extrusion channel 6 is arranged in the front area between the middle die body 2 and the lower die body 3; a first feed channel 21 is arranged at the rear side of the middle die body 2, and the front end of the first feed channel 21 is connected to the A first buffer groove 22 is provided at the intersection of the first extrusion channel 5, and a second buffer groove 23 is provided on the top surface of the middle mold body 2 in the first extrusion channel 5; a second feed channel 31 is provided on the rear side of the lower mold body 3, and a third buffer groove 32 is provided at the intersection of the front end of the second feed channel 31 and the second extrusion channel 6, and a fourth buffer groove 33 is provided on the top surface of the lower mold body 3 in the second extrusion channel 6; an acute angle is formed between the first extrusion channel 5 and the second extrusion channel 6, and an upper and lower superimposed structure is formed at the front end head outlet position.

[0015] On the basis of the above scheme, a first deformation groove 11 and a first mounting hole 12 are provided at the front end of the upper mold body 1, and a push-pull rod fine-tuning structure 7 is provided in the first mounting hole 12. The pull rod at the front end of the push-pull rod fine-tuning mechanism 7 passes through the first deformation groove 11 and is connected to the die lip of the front end of the upper mold body 1. The push-pull rod fine-tuning mechanism 7 pushes and pulls the die lip position of the upper mold body 1 to fine-tune the gap of the first extrusion channel 5.

[0016] In addition, a second deformation groove 34 and a second mounting hole 35 are provided at the front end of the lower mold body 3, and a differential bolt fine-tuning structure 8 is provided in the second mounting hole 35. The pull rod at the front end of the differential bolt fine-tuning mechanism 8 passes through the second deformation groove 34 and is connected to the die lip of the front end of the lower mold body 3. The differential bolt fine-tuning mechanism 8 pushes and pulls the die lip position of the lower mold body 3 to fine-tune the gap of the second extrusion channel 6.

[0017] In addition, the upper mold body 1 and the middle mold body 2 are connected and fixed by a series of locking screws, the lower mold body 3 and the middle mold body 2 are 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 middle mold body 2 is connected with a second hinge seat 2a by screws, and the rear side of the lower mold body 3 is connected with a third hinge seat 3a by screws, the first hinge seat 1a and the second hinge seat 2a are rotatably connected to each other by a hinge shaft, the second hinge seat 2a and the third hinge seat 3a are rotatably connected to each other by a hinge shaft, and the top surface of the first hinge seat 1a is connected with a long rod wrench 9. The setting of the hinge seat allows the upper mold body 1 to be rotated and opened by the long rod wrench 9 after the locking screws are removed, and the middle mold body 2 can also be rotated relative to the lower mold body 3.

[0018] Specifically, the first articulated seat 1a, the second articulated seat 2a and the third articulated seat 3a are connected to form an articulated seat group. The number of the articulated seat groups is four, two of which are arranged in the left area of ​​the mold body and two are arranged in the right area of ​​the die head.

[0019] In addition, an adjusting gasket is arranged between the first articulated seat 1a and the upper mold body 1, and the distance of the upper mold body 1 moving forward can be adjusted by replacing the adjusting gaskets of different thicknesses here; an adjusting gasket is arranged between the second articulated seat 2a and the middle mold body 2, and the distance of the middle mold body 2 moving forward can be adjusted by replacing the adjusting gaskets of different thicknesses here; an adjusting gasket is arranged between the third articulated seat 3a and the lower mold body 3, and the distance of the lower mold body 3 moving forward can be adjusted by replacing the adjusting gaskets of different thicknesses here. In this way, the distance between the front and rear of the upper and lower mold body lip openings can be adjusted.

[0020] Furthermore, a plurality of locking modules 10 are connected between the rear sides of the upper mold body 1 and the middle mold body 2 , and between the rear sides of the middle mold body 2 and the lower mold body 3 .

[0021] The working principle of the present invention is as follows: The thickness of the gasket 4 determines the gap between the first extrusion channel 5 and the second extrusion channel 6. Material A enters from the first feed channel 21, fills the first buffer groove 22, and then uniformly enters the first extrusion channel 5 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 5; Material B enters from the second feed channel 31, fills the third buffer groove 32, and then uniformly squeezes forward into the second extrusion channel 6 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 6. After extrusion, material A and material B merge at the die lip to form an upper and lower superimposed coating, which is evenly coated on the substrate.

[0022] 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 double-layer coating die head, characterized in that: The invention comprises an upper mold body (1), a middle mold body (2) and a lower mold body (3) which are connected to each other. The rear region between the upper mold body (1) and the middle mold body (2) and the rear region between the middle mold body (2) and the lower mold body (3) are both provided with a gasket (4). The front region between the middle mold body (2) and the upper mold body (1) is provided with a first extrusion channel (5). The front region between the middle mold body (2) and the lower mold body (3) is provided with a second extrusion channel (6). The rear side of the middle mold body (2) is provided with a first feed channel (21). The front end of the first feed channel (21) is connected to the first extrusion channel ( 5) is provided with a first buffer groove (22) at the intersection, and a second buffer groove (23) is provided on the top surface of the middle mold body (2) in the first extrusion channel (5); a second feed channel (31) is provided on the rear side of the lower mold body (3), a third buffer groove (32) is provided at the intersection of the front end of the second feed channel (31) and the second extrusion channel (6), and a fourth buffer groove (33) is provided on the top surface of the lower mold body (3) in the second extrusion channel (6); an acute angle is formed between the first extrusion channel (5) and the second extrusion channel (6), and an upper and lower superimposed structure is formed at the front end head outlet position.

2. A double-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 (11) and a first mounting hole (12); a push-pull rod fine-tuning structure (7) is provided in the first mounting hole (12); the pull rod at the front end of the push-pull rod fine-tuning mechanism (7) passes through the first deformation groove (11) and is connected to the die lip at the front end of the upper mold body (1); the push-pull rod fine-tuning mechanism (7) pushes and pulls the die lip position of the upper mold body (1) to fine-tune the gap of the first extrusion channel (5).

3. A double-layer coating die according to claim 1, characterized in that: The front end of the lower mold body (3) is provided with a second deformation groove (34) and a second mounting hole (35), and the second mounting hole (35) is provided with a differential bolt fine-tuning structure (8). The pull rod at the front end of the differential bolt fine-tuning mechanism (8) passes through the second deformation groove (34) and is connected to the die lip at the front end of the lower mold body (3). The differential bolt fine-tuning mechanism (8) pushes and pulls the die lip position of the lower mold body (3) to fine-tune the gap of the second extrusion channel (6).

4. A double-layer coating die head according to claim 1, characterized in that: The upper mold body (1) and the middle mold body (2) are connected and fixed by a series of locking screws, and the lower mold body (3) and the middle mold body (2) are 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 middle mold body (2) is connected to a second hinge seat (2a) by screws, and the rear side of the lower mold body (3) is connected to a third hinge seat (3a) by screws. The first hinge seat (1a) and the second hinge seat (2a) are rotatably connected to each other via an articulated shaft, and the second articulated seat (2a) and the third articulated seat (3a) are rotatably connected to each other via an articulated shaft. The top surface of the first articulated seat (1a) is connected to a long rod wrench (9).

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

6. A double-layer coating die according to claim 4, characterized in that: An adjusting gasket is provided between the first hinge seat (1a) and the upper mold body (1), an adjusting gasket is provided between the second hinge seat (2a) and the middle mold body (2), and an adjusting gasket is provided between the third hinge seat (3a) and the lower mold body (3).

7. A double-layer coating die according to claim 1, characterized in that: A plurality of locking modules (10) are connected between the rear sides of the upper mold body (1) and the middle mold body (2), and between the rear sides of the middle mold body (2) and the lower mold body (3).

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