Gradient composite coating die head

By designing a gradient composite coating die, two raw materials, A and B, can be extruded independently in one die to form an A-A/B gradient superposition-B type coating. This solves the problem that gradient coatings cannot be achieved in existing technologies and ensures the uniformity and gradient effect of the coating in different width directions.

CN223970265UActive Publication Date: 2026-03-06ZHEJIANG JINGCHENG MOLD MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing technologies cannot achieve independent extrusion of two raw materials, A and B, in a single die to form an A-A/B gradient superposition-B type coating, especially for gradient coating structures used in special products.

Method used

A gradient composite coating die head was designed. By connecting the upper die, the gasket and the lower die, and combining the design of the extrusion channel, the feed channel, the buffer groove and the diversion insert, the independent extrusion of two raw materials A and B can be realized to form an A-A/B gradient superposition-B type coating.

Benefits of technology

It enables the independent and uniform extrusion of two raw materials, A and B, in a single die head, ensuring the uniformity of the coating in different width directions, and guaranteeing the gradient effect of the coating through flow regulation and fine-tuning mechanisms.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a gradient composite coating die head which comprises an upper die, a gasket, a lower die and an extrusion channel, an A material feeding channel is formed in the left side area of the lower die, a B material feeding channel is formed in the right side area of the lower die, a buffer groove is formed in the front area of the top face of the lower die, and a flow dividing insert for separating the buffer groove left and right is arranged in the middle of the buffer groove. The shunting insert comprises a left-section sealing part, a middle-section shunting part and a right-section sealing part, the shunting insert is of a gently rising structure from right to left, an upper-layer B material runner is formed in a gap area between the top surface of the middle-section shunting part and the bottom surface of the upper die, and a lower-layer A material runner is formed in a gap area between the bottom surface of the middle-section shunting part and the bottom surface of the buffer groove; and the upper-layer B material runner and the lower-layer A material runner forwards enter the front extrusion channel to form a coating with an upper-layer B and lower-layer A superposed structure. According to the invention, two raw materials A and B are independently extruded in one die head to form an A-A / B gradient superposition-B type coating.
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Description

Technical Field

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

[0002] A coating die is a precision device designed to control and distribute slurry evenly onto a substrate surface. Some special products require two coatings, A and B, with partially overlapping layers to form a gradient coating of A-A / B gradient overlay-B; this structure has not been seen before. Summary of the Invention

[0003] To address the aforementioned problems, this invention aims to provide a gradient composite coating die head, which can independently complete the extrusion of two raw materials, A and B, into an A-A / B gradient superposition-B type coating within a single die head.

[0004] The technical solution of this invention is a gradient composite coating die head, including an upper die, a gasket, and a lower die, which are connected as one unit by a locking screw. An extrusion channel is provided between the front ends of the upper die and the lower die, and the height of the extrusion channel corresponds to the thickness of the gasket. An A material feeding channel is provided on the left side of the lower die, and a B material feeding channel is provided on the right side of the lower die. A buffer groove is provided along the width direction on the front area of ​​the top of the lower die, and the bottom of the buffer groove is connected to the A material feeding channel and the B material feeding channel, respectively. A flow-dividing insert is provided in the middle of the buffer groove to divide the buffer groove into left and right sections. The flow-dividing insert includes a left sealing section, a middle flow-dividing section, and a right sealing section, and the flow-dividing insert is arranged from right to left. The structure has a gently rising direction. The right section sealing part contacts the bottom of the buffer groove to achieve a lower end seal, and the left section sealing part contacts the bottom surface of the upper die to achieve an upper end seal. The gap area between the top surface of the middle section diverting part and the bottom surface of the upper die forms an upper layer B material flow channel, and the gap area between the bottom surface of the middle section diverting part and the bottom surface of the buffer groove forms a lower layer A material flow channel. The upper layer B material flow channel and the lower layer A material flow channel enter the extrusion channel in front to form a coating with an upper layer B and lower layer A superimposed structure. The extrusion channel in front of the right area of ​​the diverting insert extrudes B material, and the extrusion channel in front of the left area of ​​the diverting insert extrudes A material. Finally, the extrusion channel extrudes a coating with an A-A / B gradient superimposed B type along the width direction.

[0005] Preferably, a flow channel is provided on the top surface of the lower mold on the rear side of the flow divider insert. The right end of the flow channel is connected to the upper right area of ​​the middle flow divider section, and the left end of the flow channel is connected to the top left area of ​​the middle flow divider section. A flow regulating valve rod is provided in the flow channel. The flow regulating valve rod is threadedly connected to the threaded hole of the upper mold. The bottom cross-sectional shape of the flow regulating valve rod corresponds to the cross-sectional shape of the flow channel. The top end of the flow regulating valve rod extends out of the upper mold and is provided with a locking part for a wrench. Tightening the locking part allows the bottom of the flow regulating valve rod to rise and fall in the flow channel to control the flow rate of raw material B in the flow channel.

[0006] Preferably, the front end of the upper die is provided with a deformation groove and a mounting hole, and a push-pull rod fine-tuning structure is provided in the mounting hole to adjust the front end gap of the extrusion channel.

[0007] Preferably, the upper mold front end is provided with vent holes at the positions above the left and right ends of the buffer groove.

[0008] Preferably, the rear side of the upper mold and the rear side of the lower mold are provided with a locking module that connects the two into one unit. An adjusting shim is provided between the locking module and the upper mold to adjust the distance the upper mold extends forward. An adjusting shim is provided between the locking module and the lower mold to adjust the distance the lower mold extends forward.

[0009] Preferably, the upper mold rear side is connected to an upper hinge seat, the lower mold rear side is connected to a lower hinge seat, the upper hinge seat and the lower hinge seat are connected by a hinge shaft, and a long-handled wrench is connected to the top surface of the upper hinge seat.

[0010] Preferably, the upper hinge seat, the lower hinge seat, and the long lever wrench form a hinge seat group, and there are two hinge seat groups, located on the left and right sides of the rear side of the upper mold, respectively.

[0011] This invention enables the independent extrusion of two raw materials, A and B, into a gradient A-A / B-type coating within a single die head. This ensures that the coating is uniformly extruded forward at different width directions and includes a die lip gap fine-adjustment mechanism. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0014] Figure 3 This is an exploded view of the present invention;

[0015] Figure 4 This is a top view of the present invention;

[0016] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0017] Figure 6 for Figure 4 A cross-sectional view along the BB direction;

[0018] Figure 7 This is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 8 This is a schematic diagram of the structure of the lower mold, the flow divider insert, and the flow regulating valve stem in this invention;

[0020] Wherein: 1—Upper mold; 101—Deformation groove; 102—Mounting hole; 103—Ventilation hole; 2—Gasket; 3—Lower mold; 31—A material feed channel; 32—B material feed channel; 33—Buffer groove; 34—Drainage groove; 4—Mold locking screw; 5—Extrusion channel; 6—Diverter insert; 61—Left section sealing part; 62—Middle section diverter part; 63—Right section sealing part; 7—Upper layer B material flow channel; 8—Lower layer A material flow channel; 9—Flow regulating valve stem; 91—Snap-fit ​​part; 10—Push-pull rod fine adjustment structure; 11—Locking module; 12—Upper hinge seat; 13—Lower hinge seat; 14—Long rod wrench. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] like Figures 1 to 8As shown, this invention provides a gradient composite coating die head, including an upper die 1, a gasket 2, and a lower die 3, which are connected as one unit by a locking screw 4. An extrusion channel 5 is provided between the front ends of the upper die 1 and the lower die 3, and the height of the extrusion channel 5 corresponds to the thickness of the gasket 2. An A material feeding channel 31 is provided on the left side of the lower die 3, and a B material feeding channel 32 is provided on the right side of the lower die 3. A buffer groove 33 is provided along the width direction on the front front area of ​​the top of the lower die 3. The bottom of the buffer groove 33 is connected to the A material feeding channel 31 and the B material feeding channel 32, respectively. A flow-dividing insert 6 is provided in the middle of the buffer groove 33 to divide the buffer groove 33 to the left and right. The flow-dividing insert 6 includes a left sealing part 61, a middle flow-dividing part 62, and a right sealing part 63. The structure rises gently from right to left. The right section sealing part 63 contacts the bottom of the buffer groove 33 to achieve a lower end seal, and the left section sealing part 61 contacts the bottom surface of the upper mold 1 to achieve an upper end seal. The gap area between the top surface of the middle section diverting part 62 and the bottom surface of the upper mold 1 forms the upper layer B material flow channel 7, and the gap area between the bottom surface of the middle section diverting part 62 and the bottom surface of the buffer groove 33 forms the lower layer A material flow channel 8. The upper layer B material flow channel 7 and the lower layer A material flow channel 8 enter the extrusion channel 5 in front to form a coating with an inclined gradient superposition structure of upper layer B and lower layer A. The extrusion channel 5 in front of the right area of ​​the diverting insert 6 extrudes the B material, and the extrusion channel 5 in front of the left area of ​​the diverting insert 6 extrudes the A material. Finally, the extrusion channel 5 extrudes a coating with an A-A / B gradient superposition-B type along the width direction.

[0023] Based on the above scheme, a flow channel 34 is provided on the top surface of the lower mold 3 on the rear side of the flow divider insert 6. The right end of the flow channel 34 is connected to the area above the right end of the middle flow divider 62, and the left end of the flow channel 34 is connected to the top area of ​​the left end of the middle flow divider 62. A flow regulating valve rod 9 is provided in the flow channel 34. The flow regulating valve rod 9 is threadedly connected to the threaded hole of the upper mold 1. The bottom cross-sectional shape of the flow regulating valve rod 9 corresponds to the cross-section of the flow channel 34. The top end of the flow regulating valve rod 9 extends out of the upper mold 1 and a locking part 91 for wrench locking is provided at the end. Tightening the locking part 91 realizes the lifting and lowering of the bottom of the flow regulating valve rod 9 in the flow channel 34 to control the flow rate of raw material B in the flow channel 34.

[0024] In addition, the front end of the upper mold 1 is provided with a deformation groove 101 and a mounting hole 102, and a push-pull rod fine-tuning structure 10 is provided in the mounting hole 102 to adjust the front end gap of the extrusion channel 5.

[0025] In addition, the upper mold 1 has an exhaust hole 103 located above the left and right ends of the buffer groove 33 at the front end.

[0026] Specifically, the rear side of the upper mold 1 and the rear side of the lower mold 3 are provided with a locking module 11 that connects the two into one. An adjusting shim is provided between the locking module 11 and the upper mold 1 to adjust the distance of the upper mold 1 extending forward. An adjusting shim is provided between the locking module 11 and the lower mold 3 to adjust the distance of the lower mold 3 extending forward.

[0027] Specifically, the upper mold 1 is connected to an upper hinge seat 12 on its rear side, and the lower mold 3 is connected to a lower hinge seat 13 on its rear side. The upper hinge seat 12 and the lower hinge seat 13 are connected by a hinge shaft, and a long lever wrench 14 is connected to the top surface of the upper hinge seat 12.

[0028] Furthermore, the upper hinge seat 12, the lower hinge seat 13, and the long lever wrench 14 form a hinge seat group. There are two hinge seat groups, located on the left and right sides of the rear side of the upper mold 1, respectively.

[0029] The working principle of this invention is as follows:

[0030] Raw material A enters from the A material feed channel 31 and reaches the left side area of ​​the buffer tank 33, while raw material B enters from the B material feed channel 32 and reaches the right side area of ​​the buffer tank 33. The diversion insert 6 separates the two raw materials A and B. At the same time, the lower part of the middle diversion section 62 is filled with raw material A and extruded forward, while the upper part of the middle diversion section 62 is filled with raw material B and extruded forward. Meanwhile, raw material B reaches the top left side of the middle diversion section 62 through the guide channel 34, so that the raw material B above the middle diversion section 62 can be fully filled, ensuring that the upper layer of the middle diversion section 62 area is raw material B and the lower layer is raw material A, forming an upper and lower superimposed coating of raw materials A and B. Finally, an A-A / B gradient superimposed-B type coating is extruded forward from the extrusion channel 5 in the width direction of the overall mold body.

[0031] 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 coating die of gradual composite, comprising an upper die (1), a gasket (2) and a lower die (3), which are connected as a whole by a locking screw (4), an extrusion channel (5) is arranged between the front ends of the upper die (1) and the lower die (3), the height of the extrusion channel (5) corresponds to the thickness of the gasket (2), characterized in that: The left area of the lower die (3) is provided with an A material feeding channel (31), the right area of the lower die (3) is provided with a B material feeding channel (32), the top surface of the lower die (3) is provided with a buffer groove (33) in the front area along the width direction, the bottom of the buffer groove (33) is communicated with the A material feeding channel (31) and the B material feeding channel (32) respectively, the middle part of the buffer groove (33) is provided with a flow dividing insert (6) for dividing the buffer groove (33) into left and right parts, the flow dividing insert (6) comprises a left segment sealing part (61), a middle segment flow dividing part (62) and a right segment sealing part (63), the flow dividing insert (6) is in a gently rising structure from right to left, the right segment sealing part (63) contacts the bottom of the buffer groove (33) to realize lower end sealing, the left segment sealing part (61) contacts the bottom surface of the upper die (1) to realize upper end sealing, the gap between the top surface of the middle segment flow dividing part (62) and the bottom surface of the upper die (1) forms an upper layer B material flow channel (7), the gap between the bottom surface of the middle segment flow dividing part (62) and the bottom surface of the buffer groove (33) forms a lower layer A material flow channel (8), the upper layer B material flow channel (7) and the lower layer A material flow channel (8) enter the front extrusion channel (5) to form a coating layer with an upper layer B and a lower layer A in a stacking structure, the front extrusion channel (5) in the right area of the flow dividing insert (6) extrudes B raw material, the front extrusion channel (5) in the left area of the flow dividing insert (6) extrudes A raw material, and finally the extrusion channel (5) extrudes a coating layer with an A-A / B gradient stacking-B type along the width direction. ​ 2. A coextrusion coating die of claim 1 wherein: The top surface of the lower die (3) at the rear side of the flow dividing insert (6) is provided with a drainage groove (34), the right end of the drainage groove (34) is communicated to the upper area of the right end of the middle segment flow dividing part (62), and the left end of the drainage groove (34) is communicated to the top area of the left end of the middle segment flow dividing part (62); the drainage groove (34) is provided with a flow adjusting valve rod (9), the flow adjusting valve rod (9) is screw-connected in a threaded hole of the upper die (1), the bottom cross section shape of the flow adjusting valve rod (9) corresponds to the cross section of the drainage groove (34), the top end of the flow adjusting valve rod (9) extends out of the upper die (1) and is provided with a clamping part (91) for wrench clamping, and screwing the clamping part (91) realizes the lifting control of the flow adjusting valve rod (9) in the drainage groove (34) to control the flow of B raw material in the drainage groove (34).

3. A coextrusion coating die of claim 1 wherein: The front end of the upper die (1) is provided with a deformation groove (101) and a mounting hole (102), and the mounting hole (102) is provided with a push-pull rod fine adjustment structure (10) for adjusting the gap of the front end of the extrusion channel (5).

4. The graduated composite coating die of claim 1 wherein: The front end of the upper die (1) is provided with an exhaust hole (103) above the left and right end heads of the buffer groove (33).

5. A coextrusion coating die of claim 1 wherein: The rear side surface of the upper die (1) and the rear side surface of the lower die (3) are provided with a locking module (11) for connecting the two into one, the locking module (11) and the upper die (1) are provided with adjusting shims, and the locking module (11) and the lower die (3) are provided with adjusting shims.

6. A coextrusion coating die of claim 1 wherein: The upper die (1) is connected with an upper hinge seat (12) on the rear side, the lower die (3) is connected with a lower hinge seat (13) on the rear side, the upper hinge seat (12) and the lower hinge seat (13) are connected through a hinge shaft, and the upper hinge seat (12) is connected with a long rod wrench (14) on the top surface.

7. A graduated composite coating die according to claim 6, wherein: The upper hinge seat (12), the lower hinge seat (13) and the long rod wrench (14) form a hinge seat group, and the number of hinge seat groups is two, which are respectively located on the left and right side areas of the rear side of the upper die (1).