Coating die head
By setting an off-axis feed port and a stirring component on the coating die head, efficient cleaning and uniform coating without disassembly are achieved, solving the problem of low cleaning and replacement efficiency of coating die heads in the prior art, and improving production efficiency and coating quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2026-03-06
AI Technical Summary
Existing coating dies are inefficient to clean and replace, prone to wear, affecting coating results, and downtime leads to slurry loss and sedimentation, increasing costs.
The coating die head is designed with first and second feed ports of different axes on its two opposite ends. These two feed ports are used for cleaning and slurry management without disassembling the die head. Combined with the discharge port and stirring components, efficient cleaning and uniform coating are achieved.
It improves coating efficiency, reduces wear and downtime, lowers replacement costs, ensures coating quality and uniformity, and expands the range of applications.
Smart Images
Figure CN223970266U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of coating equipment technology, specifically to a coating die head. Background Technology
[0002] In related technologies, when cleaning the coating die head, it is usually done by removing the coating die head from the extrusion coating machine and then cleaning it. However, the disassembly process is not only time-consuming, but also causes some wear to the coating die head, affecting the coating effect. Utility Model Content
[0003] Embodiments of this application provide a coating die head to improve the situation where poor coating effect is caused by disassembling and cleaning the coating die head.
[0004] An embodiment of this application provides a coating die head, comprising:
[0005] The body has a material cavity and a first end face and a second end face disposed opposite to each other;
[0006] The first feed inlet is located on the first end face and is connected to the material cavity;
[0007] The second feed inlet is located on the second end face and is connected to the material cavity. The second feed inlet is arranged off-axis from the first feed inlet.
[0008] In some embodiments, the body has a peripheral surface connected between a first end face and a second end face, and both the first feed port and the second feed port are disposed close to the peripheral surface and are far apart from each other.
[0009] In some embodiments, a discharge port is provided on the peripheral surface, which penetrates the cavity wall of the body and communicates with the material cavity.
[0010] In some embodiments, the discharge port is a strip-shaped groove, the long axis of the discharge port is parallel to the axial direction of the body, and the length of the discharge port is less than the length of the material cavity.
[0011] In some embodiments, the main body is provided with a plurality of discharge ports, which are spaced apart along the circumference of the main body, and the lengths of the plurality of discharge ports are different in the axial direction of the main body; and / or, the widths of the plurality of discharge ports are different in the circumferential direction of the main body.
[0012] In some embodiments, the coating die head further includes:
[0013] A coating pad, located inside the discharge port, is configured to coat the slurry in the material chamber onto the workpiece to be processed.
[0014] In some embodiments, the coating die head further includes a stirring assembly disposed within the material chamber and configured to stir the slurry within the material chamber.
[0015] In some embodiments, the stirring assembly includes:
[0016] The rotating shaft has two ends that are rotatably connected to the cavity walls of the main body;
[0017] The blades are mounted on the rotating shaft.
[0018] In some embodiments, the body is a cylinder, and the first end face and the second end face are the two end faces of the cylinder, respectively.
[0019] In some embodiments, the material cavity is a cylindrical cavity and is coaxially arranged with the body.
[0020] The beneficial effects of the embodiments of this application are as follows:
[0021] In the embodiments of this application, two feed ports, a first feed port and a second feed port, are respectively provided on the first end face and the second end face opposite to each other on the body of the coating die. The first feed port and the second feed port are arranged off-axis, allowing pressure to be applied to either feed port during cleaning of the coating die to introduce cleaning solvent into the material chamber to clean the slurry within. After cleaning, the waste liquid in the material chamber is discharged through the other feed port. The entire cleaning process does not require removing the coating die from the coating extruder, saving time on disassembling the coating die and helping to improve production efficiency. Furthermore, not needing to disassemble the coating die also avoids wear on the coating die, helping to ensure the final coating quality, while reducing the cost of replacing the coating die. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a three-dimensional structural cross-sectional view of a coating die provided in an embodiment of this application;
[0024] Figure 2 yes Figure 1 A frontal sectional view of the coating die head.
[0025] Figure label:
[0026] 1. Body; 11. Material cavity; 12. First end face; 13. Second end face; 14. Circumferential surface; 141. Discharge port;
[0027] 2. First feed inlet;
[0028] 3. Second feed inlet;
[0029] 4. Coated gaskets;
[0030] 5. Stirring assembly; 51. Rotating shaft; 52. Blades. Detailed Implementation
[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.
[0032] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.
[0033] In related technologies, cleaning the coating die head usually involves removing it from the extrusion coating machine. However, this disassembly process is time-consuming, affecting operational efficiency, and may also cause wear and tear on the die head, impacting the final coating effect. Furthermore, when using the coating die head for production, replacing the coating gasket usually requires stopping the extrusion machine. This leads to significant slurry loss from the material chamber, resulting in waste, increased costs, and a longer processing time. Additionally, commissioning the extrusion machine also requires it to be stopped. However, when the extrusion machine is stopped, the slurry flow in the material chamber gradually slows down, making it prone to sedimentation and even particle formation, which severely affects the coating effect.
[0034] To address the aforementioned problems, this application provides a coating die head to improve these issues.
[0035] Please see Figure 1 and Figure 2 , Figure 1 This is a three-dimensional structural cross-sectional view of a coating die provided in an embodiment of this application. Figure 2 yes Figure 1 A cross-sectional view of the coating die head from a frontal perspective. The coating die head includes: a body 1 having a material cavity 11, and a first end face 12 and a second end face 13 disposed opposite to each other; a first feed port 2 disposed on the first end face 12 and communicating with the material cavity 11; and a second feed port 3 disposed on the second end face 13 and communicating with the material cavity 11, wherein the second feed port 3 and the first feed port 2 are disposed off-axis.
[0036] In this embodiment, two feed ports, a first feed port 2 and a second feed port 3, are respectively provided on the first end face 12 and the second end face 13 of the coating die head body 1. This allows pressure to be applied to either feed port during cleaning of the coating die head, allowing cleaning solvent to be introduced into the material cavity 11 to clean the slurry within the material cavity 11. After cleaning, the waste liquid in the material cavity 11 is discharged through the other feed port. Furthermore, in this embodiment, the first feed port 2 and the second feed port 3 are arranged off-axis, allowing a height difference between the two feed ports during cleaning of the coating die head. That is, the distances between the first feed port 2 and the second feed port 3 and the horizontal plane are different. This allows the cleaning solvent to be injected through the feed port with the larger distance from the horizontal plane, thus ensuring that the injected cleaning solvent can clean as many material cavities 11 as possible, reducing the adverse effects of incomplete cleaning of the material cavities 11 on the coating effect. The entire cleaning process of the coating die head provided in this embodiment does not require removing the coating die head from the coating extruder, saving time on disassembling the coating die head and helping to improve production efficiency. At the same time, it also avoids wear on the coating die head, ensuring the final coating quality and reducing the cost of replacing the coating die head.
[0037] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, the body 1 has a peripheral surface 14 connected between the first end face 12 and the second end face 13. The first feed port 2 and the second feed port 3 are both disposed close to the peripheral surface 14, and the first feed port 2 and the second feed port 3 are far apart from each other.
[0038] This design maximizes the distance between the first feed inlet 2 and the second feed inlet 3 in the direction perpendicular to the horizontal plane, which helps the cleaning solvent to clean the entire material chamber 11 and reduces the adverse effects on the coating effect caused by incomplete cleaning of the material chamber 11.
[0039] In addition, during shutdown and debugging, the coating die head provided in this application embodiment can also apply air pressure to the material chamber 11 through the feed port which is far from the horizontal plane, so that the slurry in the material chamber 11 can flow back, so as to avoid the slurry in the material chamber 11 settling or even generating particles during the debugging period, which would affect the coating effect or cause slurry waste and increase costs.
[0040] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, a discharge port 141 is provided on the peripheral surface 14. The discharge port 141 penetrates the cavity wall of the body 1 and communicates with the material cavity 11.
[0041] In this embodiment of the application, a discharge port 141 is opened on the peripheral surface 14, which does not affect the injection of slurry into the material cavity 11 by the first inlet 2 and the second inlet 3. At the same time, the discharge port 141 can also be used for coating operations.
[0042] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, the discharge port 141 is a strip-shaped groove, the long axis of the discharge port 141 is parallel to the axial direction of the body 1, and the length of the discharge port 141 is less than the length of the material cavity 11. This ensures that slurry flows out from all points along the axial direction of the body 1 through the discharge port 141, guaranteeing that the surface of the workpiece to be processed that comes into contact with the discharge port 141 during the coating operation is covered by slurry. This avoids ineffective operations (i.e., the surface is not covered by slurry after the discharge port 141 comes into contact with it), thus helping to improve the efficiency of the coating operation.
[0043] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, the main body 1 is provided with a plurality of discharge ports 141, which are spaced apart along the circumference of the main body 1, and the lengths of the plurality of discharge ports 141 are different along the axial direction of the main body 1.
[0044] In this embodiment, multiple discharge ports 141 of different lengths are provided, allowing for the selection of a suitable discharge port 141 based on actual coating requirements when using the coating die provided in this embodiment. This makes the coating die provided in this embodiment applicable to more operational scenarios. Furthermore, it reduces the time spent changing coating dies of different coating specifications, helping to improve coating efficiency. Simultaneously, the absence of disassembly of the coating die avoids wear caused by disassembly, helping to ensure coating quality.
[0045] In some embodiments of this application, multiple discharge ports 141 have different widths in the circumferential direction of the body 1.
[0046] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, the center of each discharge port 141 is located within the same radial section of the body 1.
[0047] This reduces the time required to adjust the position of the coating die head along the axis of the body 1 after changing to different sizes of the discharge port 141, which helps to improve the efficiency of coating operations.
[0048] In some embodiments of this application, the center of each discharge port 141 is located within the same radial cross-section of the body 1, and this cross-section is equidistant from the first end face 12 and the second end face 13. This ensures that each discharge port 141 is positioned at the center of the material cavity 11, which helps to guarantee the uniformity of material discharge from each discharge port 141 and ensures coating quality.
[0049] Please see Figure 1 In some embodiments of this application, the coating die head further includes a coating pad 4, disposed in the discharge port 141, configured to coat the slurry in the material chamber 11 onto the workpiece to be processed.
[0050] In this embodiment of the application, by providing a coating pad 4 at the discharge port 141, the width and thickness of the coating can be adjusted using the coating pad 4, thereby making it suitable for more coating scenarios and expanding the applicability of the coating die provided in this application.
[0051] Please continue reading. Figure 1 In some embodiments of this application, the coating pad 4 is embedded in the discharge port 141, and the coating pad 4 and the discharge port 141 are fitted with a clearance.
[0052] By fitting the coating pad 4 with the discharge port 141 with a gap, the slurry in the material chamber 11 can flow out through the gap, while preventing the coating pad 4 from falling off from the discharge port 141.
[0053] Please see Figure 2 In some embodiments of this application, the coating die head further includes a stirring assembly 5, which is disposed in the material chamber 11 and configured to stir the slurry in the material chamber 11.
[0054] In this embodiment, a stirring assembly 5 is provided inside the material chamber 11, which allows the slurry inside the material chamber 11 to be stirred, reducing the possibility of sedimentation and improving coating quality. Simultaneously, sedimentation of the slurry in the material chamber 11 may result in particles, requiring replacement of the slurry to ensure coating quality. Therefore, in this embodiment, providing the stirring assembly 5 inside the material chamber 11 also helps save time on slurry replacement and reduce the increased cost associated with slurry replacement.
[0055] Please continue reading. Figure 2In some embodiments of this application, the stirring assembly 5 includes: a rotating shaft 51, both ends of which are rotatably connected to the cavity wall of the body 1; and blades 52 disposed on the rotating shaft 51.
[0056] In some embodiments of this application, one end of the rotating shaft 51 is embedded in the cavity wall of the body 1, and the other end penetrates through the cavity wall of the body 1, and the rotating shaft 51 is coaxially arranged with the body 1. In this way, when the rotating shaft 51 rotates, the agitation effect on the slurry around the rotating shaft 51 is basically uniform, which helps to ensure the uniformity of the slurry.
[0057] In some embodiments of this application, the blade 52 is set at an angle to the rotating shaft 51, the angle being greater than or equal to 0° and less than 90°. Thus, when the angle between the blade 52 and the rotating shaft 51 is 0°, the blade 52 is parallel to the rotating shaft 51, resulting in better agitation of the slurry in the material chamber 11 when the blade 52 is used. Making the angle between the blade 52 and the rotating shaft 51 less than 90°, i.e., the blade 52 is not perpendicular to the rotating shaft 51 (in which case the area that can be agitated by the blade 52 is smaller, and the agitation effect is poor), ensures that the blade 52 can agitate a larger amount of slurry in the material chamber 11 when the rotating shaft 51 rotates, reducing the possibility of slurry settling. It is understood that when the angle between the blade 52 and the rotating shaft 51 is 0°, i.e., when the blade 52 is parallel to the rotating shaft 51, the agitation effect on the slurry is good.
[0058] Please see Figure 1 and Figure 2 In some embodiments of this application, the end face of the blade 52 away from the rotating shaft 51 is fitted with the cavity wall of the material chamber 11 with a clearance. In this way, when the blade 52 rotates with the rotating shaft 51, it can agitate the slurry in the material chamber 11 as much as possible, reduce the amount of slurry that settles, help ensure the quality of the coating operation, and reduce the cost of replacing the slurry.
[0059] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, the blade 52 is trapezoidal, the trapezoid has a first base and a second base, the first base is connected to the rotating shaft 51, and the length of the first base is less than the length of the second base.
[0060] This design ensures that the blades 52 can agitate the slurry in the material chamber 11 when the shaft 51 rotates, while the slurry near the shaft 51 can also be refluxed, which helps to improve the fluidity of the slurry and reduce the resistance of the blades 52 agitating the slurry.
[0061] In some embodiments of this application, the cross-section of the blade 52 is fan-shaped in the direction of the blade thickness.
[0062] In some embodiments of this application, the stirring assembly 5 has a plurality of blades 52. The plurality of blades 52 are equally spaced along the circumference of the rotating shaft 51, and each blade 52 has an angle equal to that of the rotating shaft.
[0063] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, the body 1 is a cylinder, and the first end face 12 and the second end face 13 are the two end faces of the cylinder, respectively. This facilitates coating operations using the discharge port 141 opened on the peripheral surface 14, and the coating operation can be completed whenever the discharge port 141 is opened at any position on the peripheral surface 14, which helps to expand the applicability of the coating die provided in this application.
[0064] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, the first feed port 2 and the second feed port 3 are arranged in a centrally symmetrical manner with respect to the center of the end face of the body 1.
[0065] Thus, when using the coating die head provided in this application embodiment for coating operations, the first feed port 2 and the second feed port 3 can be used to feed materials symmetrically at the same time to adjust the flow rate and make the slurry entering the material chamber 11 more uniform.
[0066] Please continue reading. Figure 1 and Figure 2 In some embodiments of this application, the material cavity 11 is a cylindrical cavity and is coaxially arranged with the body 1. In this way, the size of the material cavity 11 can be made as large as possible, so as to accommodate more slurry.
[0067] In some embodiments of this application, the diameter of the first feed port 2 is different from the diameter of the second feed port 3.
[0068] This approach allows for the adjustment of flow rate ratios using two feed inlets, thereby controlling the coating thickness.
[0069] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A coating die characterized by, The coating die comprises: a body having a material cavity, a first end face and a second end face arranged oppositely; a first feeding port arranged on the first end face and communicating with the material cavity; a second feeding port arranged on the second end face and communicating with the material cavity, the second feeding port being arranged in a different axis with the first feeding port.
2. The coating die of claim 1, wherein The body has a circumferential surface connected between the first end face and the second end face, the first feeding port and the second feeding port are arranged close to the circumferential surface, and the first feeding port and the second feeding port are away from each other.
3. The coating die of claim 2, wherein, A discharging port is arranged on the circumferential surface, the discharging port penetrates the cavity wall of the body and communicates with the material cavity.
4. The coating die of claim 3, wherein The discharging port is a strip-shaped slot, the long axis of the discharging port is parallel to the axial direction of the body, and the length of the discharging port is less than the length of the material cavity.
5. The coating die of claim 4, wherein, A plurality of discharging ports are arranged on the body, the plurality of discharging ports are arranged at intervals along the circumferential direction of the body, and the lengths of the plurality of discharging ports are different in the axial direction of the body; and / or, the widths of the plurality of discharging ports are different in the circumferential direction of the body.
6. The coating die of claim 3, wherein The coating die further comprises: a coating gasket arranged in the discharging port and configured to coat the slurry in the material cavity onto a workpiece to be processed.
7. The coating die of claim 2, wherein The coating die further comprises a stirring assembly arranged in the material cavity and configured to stir the slurry in the material cavity.
8. The coating die of claim 7, wherein, The stirring assembly comprises: a rotating shaft rotatably connected to the cavity wall of the body at both ends; a blade arranged on the rotating shaft.
9. The coating die of any one of claims 1 to 8, wherein, The body is a cylinder, and the first end face and the second end face are two end faces of the cylinder.
10. The coating die of claim 9, wherein, The material cavity is a cylindrical cavity and is arranged coaxially with the body.