Coating die and coating equipment

Abstract

This utility model discloses a coating die head and a coating device having the coating die head. The coating die head includes a first die head, a second die head, and a coating pad. The second die head has a cavity and multiple feed holes that connect to the cavity. The multiple feed holes are spaced apart along the length of the second die head. The coating pad is connected between the first die head and the second die head. The coating pad has a receiving cavity and a coating opening that connects to the receiving cavity. The receiving cavity connects to the cavity, and the slurry in the cavity flows out sequentially through the receiving cavity and the coating opening. A stirring component is provided at both ends of the length of the second die head. The stirring end of the stirring component is housed in the receiving cavity to stir the slurry in the cavity. In this way, by setting multiple feed holes and stirring components, the slurry can be prevented from depositing in the cavity, thereby improving the coating quality of the substrate.

Description

Technical Field

[0001] This utility model relates to the field of coating die head technology, and in particular to a coating die head and coating equipment. Background Technology

[0002] A coating die typically consists of a first die, a second die, and a spacer sandwiched between the two dies. The second die has a cavity, which is elongated in shape. A coating slit is formed between the first die, the second die, and the spacer. The slurry flows into the cavity from the inlet and is then extruded through the coating slit onto the substrate. When the coating width on the substrate is less than the length of the cavity, the slurry at both ends of the cavity tends to deposit due to slow or absent flow. This deposited slurry affects the solids content of the slurry and thus the coating quality of the substrate. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a coating die head that can improve the coating quality of substrates.

[0004] This utility model also proposes a coating device having the above-mentioned coating die head.

[0005] According to a first aspect embodiment of the present invention, a coating die head includes:

[0006] First mold head;

[0007] The second die head is provided with a cavity and a plurality of feed holes communicating with the cavity, and the plurality of feed holes are spaced apart along the length direction of the second die head;

[0008] A coating pad is connected between the first die head and the second die head. The coating pad has a receiving cavity and a coating opening communicating with the receiving cavity. The receiving cavity communicates with the cavity body. The slurry in the cavity body flows out sequentially through the receiving cavity and the coating opening.

[0009] The second mold head has a stirring component at each end along its length. The stirring end of the stirring component is housed in the receiving cavity to stir the slurry in the cavity.

[0010] The coating die head according to the first aspect embodiment of the present invention has at least the following beneficial effects:

[0011] When the coating die is working, the slurry enters the cavity through multiple feed holes, allowing the slurry to flow continuously within the cavity. The slurry in the cavity flows out through the coating opening via the receiving cavity. By setting up a stirring component, the stirring end can agitate the slurry located at the end of the cavity, thereby preventing slurry deposition at the end of the cavity and improving the coating quality of the substrate.

[0012] According to some embodiments of the present invention, the agitation assembly includes a driving member and an agitating member, the agitating end is disposed on the agitating member, the driving member is disposed on the outer peripheral side of the second mold head, and the output shaft of the driving member is connected to the agitating member.

[0013] According to some embodiments of the present invention, the outer peripheral surface of the agitator is provided with a spiral groove, which extends around the axis of the agitator.

[0014] According to some embodiments of the present invention, the plurality of feed holes include a first feed hole, a second feed hole and a third feed hole, wherein the first feed hole is located at one end of the second die head, the second feed hole is located at the other end of the second die head, and the third feed hole is located at the middle position of the second die head.

[0015] According to some embodiments of the present invention, the coating pad includes a long side, a first side side, and a second side side. The first side side and the second side side are disposed opposite to each other. The first side side is disposed at one end of the long side side, and the second side side is disposed at the other end of the long side side. The long side side, the first side side, and the second side side surround and form the receiving cavity. The coating opening is formed between the first side side and the second side side.

[0016] According to some embodiments of the present invention, the long side, the first side side, and the second side side are an integral structure.

[0017] According to some embodiments of the present invention, a first extension is provided on the side of the first side facing the second side, the first extension extends in a direction close to the second side, a second extension is provided on the side of the second side facing the first side, the second extension extends in a direction close to the first side, and the coating opening is formed between the first extension and the second extension.

[0018] According to some embodiments of the present invention, the first extension portion is provided with a first buffer groove on the side facing the second extension portion, and the first buffer groove extends along the side away from the second extension portion. The second extension portion is provided with a second buffer groove on the side facing the first extension portion, and the second buffer groove extends along the direction away from the first extension portion.

[0019] According to some embodiments of the present invention, the bottom wall of the first buffer groove is recessed in a direction away from the second extension, and the bottom wall of the second buffer groove is recessed in a direction away from the first extension.

[0020] The coating apparatus according to a second aspect of the present invention includes the coating die head described in the above embodiments.

[0021] The coating apparatus according to the second aspect embodiment of the present invention has at least the following beneficial effects:

[0022] When the coating die head of the first aspect of this utility model is used, the slurry enters the cavity from multiple feed holes during operation, so that the slurry can flow continuously in the cavity. The slurry in the cavity flows out from the coating opening through the receiving cavity. By setting the agitation component, the agitation end can agitate the slurry located at the end of the cavity, so as to avoid the slurry deposition at the end of the cavity and improve the coating quality of the substrate.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the coating die head according to an embodiment of the present invention;

[0026] Figure 2 This is an exploded view of the coating die head according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the assembly of the second mold head and the stirring component according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the coated pad according to an embodiment of the present invention;

[0029] Figure 5 for Figure 4 A magnified view of part A in the middle.

[0030] Figure label:

[0031] First die head 100, second die head 200, cavity 210, first feed hole 220, second feed hole 230, third feed hole 240, coating pad 300, receiving cavity 301, coating opening 302, long side 310, first side 320, first extension 321, first buffer groove 322, second side 330, second extension 331, second buffer groove 332, stirring assembly 400, driving component 410, stirring component 420, spiral groove 421. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] In related technologies, a coating die typically consists of a first die, a second die, and a spacer sandwiched between the two dies. The second die has a cavity, which is an elongated structure. A coating slit is formed between the first die, the second die, and the spacer. Slurry flows into the cavity from the inlet and is extruded through the coating slit to coat the substrate. When the coating width on the substrate is less than the length of the cavity, slurry at both ends of the cavity tends to deposit due to slow or absent flow. This deposited slurry affects the solids content of the slurry and thus the coating quality of the substrate.

[0037] Reference Figures 1 to 3According to a first aspect embodiment of the present invention, a coating die head includes a first die head 100, a second die head 200, and a coating pad 300. The second die head 200 has a cavity 210 and a plurality of feed holes communicating with the cavity 210. The plurality of feed holes are spaced apart along the length direction of the second die head 200. The coating pad 300 is connected between the first die head 100 and the second die head 200. The coating pad 300 has a receiving cavity 301 and a coating opening communicating with the receiving cavity 301. 302, the receiving cavity 301 is connected to the cavity 210, and the slurry in the cavity 210 flows out sequentially through the receiving cavity 301 and the coating opening 302. The two ends of the second die head 200 in the length direction are respectively provided with agitating components 400. The agitating end of the agitating component 400 is housed in the receiving cavity 301 to agitate the slurry in the cavity 210. In this way, by setting multiple feed holes and agitating components 400, the slurry can be prevented from depositing in the cavity 210, thereby improving the coating quality of the substrate.

[0038] For example, when the coating die is working, the slurry enters the cavity 210 through multiple feed holes, allowing the slurry to flow continuously within the cavity 210. The slurry in the cavity 210 flows out through the receiving cavity 301 and the coating opening 302. By providing the agitation component 400, the agitation end can agitate the slurry located at the end of the cavity 210, thereby preventing the slurry at the end of the cavity 210 from depositing and improving the coating quality of the substrate.

[0039] Reference Figure 1 , Figure 3 In some embodiments of this utility model, the stirring assembly 400 includes a driving member 410 and a stirring member 420. The stirring end is disposed on the stirring member 420, and the driving member 410 is disposed on the outer peripheral side of the second die head 200. The output shaft of the driving member 410 is connected to the stirring member 420, which can automatically drive the stirring member 420 to rotate, thereby improving the automation level of the coating equipment.

[0040] For example, the drive component 410 is a power component such as a servo motor or a stepper motor. The drive component 410 is located outside the second mold head 200. One end of the output shaft of the drive component 410 passes through the second mold head 200 and extends into the cavity 210 so that the output shaft of the drive component 410 is connected to the agitator 420. The drive component 410 can automatically drive the agitator 420 to rotate, thereby improving the automation level of the coating equipment.

[0041] Reference Figure 3 In some embodiments of this utility model, the outer peripheral surface of the agitator 420 is provided with a spiral groove 421. The spiral groove 421 extends around the axis of the agitator 420, so that the spiral groove 421 can push the slurry to flow along the middle position near the cavity 210, so as to avoid the slurry from depositing at both ends of the cavity 210 and improve the coating quality of the substrate.

[0042] For example, by setting the spiral groove 421, when the drive member 410 rotates, the agitator 420 can agitate the slurry while the spiral groove 421 can push the slurry to flow along the middle position near the cavity 210, so as to avoid the slurry depositing at both ends of the cavity 210 and improve the coating quality of the substrate.

[0043] As another embodiment, the stirring component can also be a structure in which a connecting shaft and stirring blades cooperate. Multiple stirring blades are configured, and the multiple stirring blades are spaced apart along the circumference of the connecting shaft. All the multiple stirring blades are connected to the outer periphery of the connecting shaft. The connecting shaft is connected to the output shaft of the drive component 410. The drive component 410 can also drive the stirring blades to rotate through the connecting shaft. No limitation is made here.

[0044] Reference Figure 3 In some embodiments of this utility model, the plurality of feed holes include a first feed hole 220, a second feed hole 230 and a third feed hole 240. The first feed hole 220 is located at one end of the second die head 200, the second feed hole 230 is located at the other end of the second die head 200, and the third feed hole 240 is located in the middle of the second die head 200, so that the slurry can flow continuously in the cavity 210, which can improve the coating quality of the substrate.

[0045] For example, when the coating die is working, the slurry enters the cavity 210 through the first feed hole 220, the second feed hole 230 and the third feed hole 240 respectively. Since the length of the coating opening 302 is less than the length of the cavity 210, the slurry entering from the first feed hole 220 moves along the middle position near the second die 200, and the slurry entering from the second feed hole 230 moves along the middle position near the second die 200, so that the slurry can flow continuously in the cavity 210, which can improve the coating quality of the substrate.

[0046] Of course, in other specific embodiments, the multiple feed holes may also include a fourth feed hole or a fifth feed hole, etc., which is not limited here.

[0047] In some embodiments of this utility model, the coating pad 300 includes a long side 310, a first side 320, and a second side 330. The first side 320 and the second side 330 are arranged opposite to each other. The first side 320 is located at one end of the long side 310, and the second side 330 is located at the other end of the long side 310. The long side 310, the first side 320, and the second side 330 enclose a receiving cavity 301. A coating opening 302 is formed between the first side 320 and the second side 330. The long side 310, the first side 320, and the second side 330 are in a U-shaped structure, which facilitates the flow of slurry.

[0048] Reference Figure 4In some embodiments of this utility model, the long side 310, the first side 320, and the second side 330 are an integral structure, which can reduce the number of molds, so as to facilitate the production and manufacturing of the coating gasket 300, thereby reducing the production and manufacturing cost of the coating die head.

[0049] For example, the long side 310, the first side 320, and the second side 330 can be integrally formed by die casting, which can reduce the number of molds and facilitate the production of the coating gasket 300, thereby reducing the production cost of the coating die head. In addition, the long side 310, the first side 320, and the second side 330 can also be connected by welding, wherein the welding method includes, but is not limited to, resistance welding, laser welding, or ultrasonic welding.

[0050] Reference Figure 4 , Figure 5 In some embodiments of this utility model, a first extension 321 is provided on the side of the first side 320 facing the second side 330. The first extension 321 extends in a direction close to the second side 330. A second extension 331 is provided on the side of the second side 330 facing the first side 320. The second extension 331 extends in a direction close to the first side 320. A coating opening 302 is formed between the first extension 321 and the second extension 331. By providing the first extension 321 and the second extension 331, part of the slurry can be blocked to make the flow rate of the slurry uniform, ensure uniform coating of the substrate, and thus improve the coating quality of the substrate.

[0051] For example, the first extension 321 can block the slurry near the first side 320 to reduce the flow rate of the slurry near the first side 320, and the second extension 331 can block the slurry near the second side 330 to reduce the flow rate of the slurry near the second side 330, so that the flow rate of the slurry is uniform, ensuring uniform coating of the substrate, thereby improving the coating quality of the substrate.

[0052] Reference Figure 4 , Figure 5 In some embodiments of this utility model, a first buffer groove 322 is provided on the side of the first extension 321 facing the second extension 331. The first buffer groove 322 extends along the side away from the second extension 331. A second buffer groove 332 is provided on the side of the second extension 331 facing the first extension 321. The second buffer groove 332 extends along the direction away from the first extension 321. This buffer groove can buffer the slurry close to the first extension 321 and the slurry close to the second extension 331, so that the flow rate of the slurry is uniform, ensuring uniform coating of the substrate, thereby improving the coating quality of the substrate.

[0053] For example, the slurry near the first extension 321 flows into the first buffer tank 322 and then flows out of the first buffer tank 322. The flow direction of the slurry flowing out of the first buffer tank 322 is perpendicular to the flow direction of the slurry in the opening, which can reduce the flow rate of the slurry near the first side 320. Similarly, the slurry near the second extension 331 flows into the second buffer tank 332 and then flows out of the second buffer tank 332. The flow direction of the slurry flowing out of the second buffer tank 332 is perpendicular to the flow direction of the slurry in the opening, which can reduce the flow rate of the slurry near the second side 330, so that the flow rate of the slurry is uniform, ensuring uniform coating of the substrate, thereby improving the coating quality of the substrate.

[0054] In some embodiments of this utility model, the bottom wall of the first buffer groove 322 is recessed in a direction away from the second extension 331, and the bottom wall of the first buffer groove 322 is an arc-shaped structure or a conical structure, which can guide the slurry in the first buffer groove 322 to flow out.

[0055] The bottom wall of the second buffer tank 332 is recessed in a direction away from the first extension 321. The bottom wall of the second buffer tank 332 is an arc-shaped structure or a conical structure, which can guide the slurry in the second buffer tank 332 to flow out.

[0056] Reference Figure 1 , Figure 2 The coating apparatus according to the second aspect of the present invention includes the coating die head of the first aspect of the present invention. By providing multiple feed holes and a stirring component 400, it can prevent slurry from depositing in the cavity 210, thereby improving the coating quality of the substrate.

[0057] For example, when the coating die is working, the slurry enters the cavity 210 through multiple feed holes, allowing the slurry to flow continuously within the cavity 210. The slurry in the cavity 210 flows out through the receiving cavity 301 and the coating opening 302. By providing the agitation component 400, the agitation end can agitate the slurry located at the end of the cavity 210, thereby preventing the slurry at the end of the cavity 210 from depositing and improving the coating quality of the substrate.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A coating die characterized by, include: First mold head (100); The second die head (200) is provided with a cavity (210) and a plurality of feed holes communicating with the cavity (210), and the plurality of feed holes are spaced apart along the length direction of the second die head (200); A coating pad (300) is connected between the first die head (100) and the second die head (200). The coating pad (300) is provided with a receiving cavity (301) and a coating opening (302) communicating with the receiving cavity (301). The receiving cavity (301) communicates with the cavity body (210). The slurry in the cavity body (210) flows out sequentially through the receiving cavity (301) and the coating opening (302). The second mold head (200) has a stirring component (400) at both ends along its length. The stirring end of the stirring component (400) is housed in the receiving cavity (301) to stir the slurry in the cavity (210).

2. The coating die head according to claim 1, characterized in that, The stirring assembly (400) includes a driving member (410) and a stirring member (420). The stirring end is disposed on the stirring member (420), the driving member (410) is disposed on the outer peripheral side of the second mold head (200), and the output shaft of the driving member (410) is connected to the stirring member (420).

3. The coating die head according to claim 2, characterized in that, The outer peripheral surface of the agitator (420) is provided with a spiral groove (421), which extends around the axis of the agitator (420).

4. The coating die head according to claim 1, characterized in that, The plurality of feed holes include a first feed hole (220), a second feed hole (230) and a third feed hole (240), wherein the first feed hole (220) is located at one end of the second die head (200), the second feed hole (230) is located at the other end of the second die head (200), and the third feed hole (240) is located at the middle position of the second die head (200).

5. The coating die head according to claim 1, characterized in that, The coating pad (300) includes a long side (310), a first side (320), and a second side (330). The first side (320) and the second side (330) are disposed opposite to each other. The first side (320) is located at one end of the long side (310), and the second side (330) is located at the other end of the long side (310). The long side (310), the first side (320), and the second side (330) enclose the receiving cavity (301). The coating opening (302) is formed between the first side (320) and the second side (330).

6. The coating die head according to claim 5, characterized in that, The long side (310), the first side (320), and the second side (330) are an integral structure.

7. The coating die head according to claim 5, characterized in that, The first side (320) has a first extension (321) on the side facing the second side (330), the first extension (321) extends in a direction close to the second side (330), the second side (330) has a second extension (331) on the side facing the first side (320), the second extension (331) extends in a direction close to the first side (320), and the coating opening (302) is formed between the first extension (321) and the second extension (331).

8. The coating die head according to claim 7, characterized in that, The first extension (321) has a first buffer groove (322) on the side facing the second extension (331), and the first buffer groove (322) extends along the side away from the second extension (331). The second extension (331) has a second buffer groove (332) on the side facing the first extension (321), and the second buffer groove (332) extends along the direction away from the first extension (321).

9. The coating die head according to claim 8, characterized in that, The bottom wall of the first buffer groove (322) is recessed in a direction away from the second extension (331), and the bottom wall of the second buffer groove (332) is recessed in a direction away from the first extension (321).

10. A coating apparatus, characterized in that, Includes the coating die head as described in any one of claims 1 to 9.

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