Coating die head

Abstract

The invention discloses a coating die head, and relates to the technical field of material coating equipment, a first filter screen is arranged at a feeding hole of the coating die head, the first filter screen covers the feeding hole, a second filter screen is arranged at a discharging channel of the coating die head, and the second filter screen covers the discharging channel; the first filter screen is used for mixing materials entering the coating die head through the feeding hole, and the second filter screen is used for mixing materials flowing out of the discharging channel. The first filter screen is arranged at the feeding hole of the coating die head, and the second filter screen is arranged at the discharging channel, so that materials entering and flowing out of the coating die head can be mixed under the action of the filter screens on the materials. Therefore, the problem of non-uniform mixing of the coating and water is effectively solved, and the defect of non-uniform distribution of coating components in the coating process due to precipitation and layering of the coating in the prior art is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of material coating equipment, in particular to a coating die head. Background Art

[0002] In today's material coating technology field, especially in the coating process involving graphene or other coatings, the uniformity of the coating plays a vital role in the quality and performance of the final product. Graphene and many similar coatings often need to be mixed with water in practical applications to form a liquid mixture required for coating. However, there is a significant problem after this type of coating is mixed with water, that is, after a period of standing or a short stay during the coating process, the coating is prone to precipitation and then separates from the water layer. This phenomenon is mainly due to the difference in the physical and chemical properties of the coating particles and water, as well as the influence of factors such as gravity, which causes the coating particles to gradually settle and gather at the bottom of the container or in certain areas inside the coating die.

[0003] In the existing coating die design, most of the emphasis is on die flow control, precise adjustment of coating thickness, and stability of die structure. For example, the common slot coating die uses a precise mechanical structure design to ensure that the coating can be evenly spread on the substrate during the coating process. However, there is a lack of effective and targeted solutions for the uneven mixing problem caused by precipitation and water stratification before the coating enters the die and inside the die.

[0004] This uneven mixing of paint and water will have many adverse effects on the coating effect. On the one hand, the uneven coating mixture will lead to inconsistent coating thickness when applied to the substrate, which will reduce the surface flatness of the product and affect the product's appearance quality and subsequent processing. On the other hand, the uneven distribution of effective ingredients in the coating will seriously weaken the functionality of the coating. For example, for graphene coatings, its excellent performance in electronic transmission, corrosion protection, and reinforcement cannot be fully utilized, which reduces the performance of the product in related application fields. For example, in the fields of electronic device manufacturing, anti-corrosion coatings, and composite material reinforcement, it cannot meet the production needs of high-precision and high-performance products. Summary of the invention

[0005] The purpose of the present invention is to provide a coating die head to solve the problems existing in the above-mentioned prior art and improve the uniformity of coating.

[0006] To achieve the above object, the present invention provides the following solutions: The present invention provides a coating die head, wherein a first filter screen is arranged at a feed hole of the coating die head, and the first filter screen covers the feed hole, and a second filter screen is arranged at a discharge channel of the coating die head, and the second filter screen covers the discharge channel; the first filter screen is used for mixing materials entering the coating die head through the feed hole, and the second filter screen is used for mixing materials flowing out through the discharge channel.

[0007] Preferably, the mesh number of the first filter screen and the mesh number of the second filter screen are both 30 meshes.

[0008] Preferably, the coating die head comprises an upper die and a lower die, and the discharge channel is located between the upper die and the lower die.

[0009] Preferably, it also includes a first connecting piece and a second connecting piece, one end of the second filter is connected to the first connecting piece, and the other end is connected to the second connecting piece; the first connecting piece is connected to the upper mold, and the second connecting piece is connected to the lower mold.

[0010] Preferably, the second filter screen is located at the discharge end of the discharge channel.

[0011] Preferably, it also includes a first protective block fixedly connected to the upper mold and a second protective block fixedly connected to the lower mold, the first connecting piece is clamped between the first protective block and the upper mold, and the second connecting piece is clamped between the second protective block and the lower mold.

[0012] Preferably, a gap is formed between the first protection block and the second protection block, and the gap is opposite to the discharge channel; and the second filter is located between the gap and the discharge channel.

[0013] Preferably, sealing strips are respectively provided between the first protection block and the first connecting piece, between the first connecting piece and the upper mold, between the second protection block and the second connecting piece, and between the second connecting piece and the lower mold.

[0014] Preferably, the width of the interval is equal to the width of the discharge channel.

[0015] Preferably, the first filter screen and the second filter screen are both made of stainless steel.

[0016] Compared with the prior art, the present invention has achieved the following technical effects: The coating die head of the present invention is provided with a first filter screen at the feed hole of the coating die head and a second filter screen at the discharge channel, and the materials entering and flowing out of the coating die head can be mixed by using the first filter screen and the second filter screen to act on the materials. This effectively solves the problem of uneven mixing of coating and water, and overcomes the defect of uneven distribution of coating components during the coating process due to precipitation and stratification of coating in the past.

[0017] Furthermore, the filter screen is used to ensure that the materials are mixed evenly, so that the thickness of the coating applied to the substrate is more uniform, thereby improving the surface flatness of the product, improving the appearance quality of the product, and facilitating subsequent processing; for coatings such as graphene coatings that have high functional requirements, uneven mixing will lead to uneven distribution of effective ingredients in the coating, which will seriously weaken the functionality of the coating. This application solves the problem of uneven mixing and can make the effective ingredients of the coating evenly distributed in the coating. For graphene coatings, its excellent performance in electronic transmission, corrosion protection, and enhancement can be fully utilized, meeting the production needs of high-precision and high-performance products in the fields of electronic device manufacturing, anti-corrosion coatings, and composite material enhancement.

[0018] Furthermore, the first filter screen and the second filter screen are both made of stainless steel. Stainless steel has the advantages of good corrosion resistance, high strength and easy processing and molding. During the coating process, the coating and its components may have certain chemical corrosion. The stainless steel material can ensure that the filter screen is not easily corroded and damaged during long-term use, thereby ensuring the normal function and service life of the filter screen.

[0019] Furthermore, by providing a first protective block fixedly connected to the upper mold and a second protective block fixedly connected to the lower mold, and using the first connecting piece and the second connecting piece to fix the second filter screen, and providing a sealing strip between the relevant components, this design can, on the one hand, play a good role in fixing and protecting the filter screen, preventing the filter screen from displacement, deformation or damage due to the impact of the paint flow or other external forces during the coating process; on the other hand, the provision of the sealing strip can ensure the sealing of the discharge channel, avoid problems such as paint leakage, and ensure the normal progress of the coating process.

[0020] Furthermore, the gap formed between the first protection block and the second protection block is directly opposite to the discharge channel, and the width of the gap is equal to the width of the discharge channel. This design enables the second filter to effectively mix the material flowing out of the discharge channel at a suitable position, while ensuring that the discharge characteristics of the discharge channel are not affected, so that the material can flow out of the discharge channel evenly and stably and be coated on the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 The structure of the coating die head of the first embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure of the coating die head of the first embodiment of the present invention is shown in FIG. Figure 2 ; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 It is a partial structural schematic diagram of a coating die head according to the second embodiment of the present invention; Figure 5 for Figure 4 A partial enlarged view of the middle A; In the figure: 1, coating die head; 11, upper die; 12, lower die; 2. Feed hole; 3. First filter screen; 4. First connecting piece; 5. Second filter screen; 6. Second connecting piece; 7. Sealing strip; 8. Second protective block; 9. First protective block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a coating die head to solve the problems existing in the above-mentioned prior art and improve the uniformity of coating.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment 1 like Figures 1 to 3As shown, this embodiment provides a coating die 1, a first filter screen 3 is arranged at the feed hole 2 of the coating die 1, and the first filter screen 3 covers the feed hole 2, a second filter screen 5 is arranged at the discharge channel of the coating die 1, and the second filter screen 5 covers the discharge channel; the first filter screen 3 is used to mix the material entering the coating die 1 through the feed hole 2, and the second filter screen 5 is used to mix the material flowing out through the discharge channel.

[0027] Since the material passed into the coating die 1 has been mixed evenly, by setting the first filter screen 3 at the feed hole 2 of the coating die 1 and setting the second filter screen 5 at the discharge channel, the filter screen can be used to further mix the material entering and flowing out of the coating die 1, which effectively solves the problem of uneven mixing of the coating and water, and overcomes the defect of uneven distribution of coating components during the coating process due to coating precipitation and stratification. The filter screen ensures that the material is mixed evenly, so that the thickness of the coating applied to the substrate is more uniform, thereby improving the surface flatness of the product, improving the appearance quality of the product, and facilitating subsequent processing; for coatings such as graphene coatings that have high functional requirements, uneven mixing will cause uneven distribution of effective ingredients in the coating, thereby seriously weakening the functionality of the coating. The present application solves the problem of uneven mixing, and can make the effective ingredients of the coating evenly distributed in the coating. For graphene coatings, its excellent performance in electronic transmission, corrosion protection, and enhancement can be fully utilized, meeting the production needs of high-precision and high-performance products in the fields of electronic device manufacturing, corrosion protection coatings, and composite material enhancement.

[0028] In the optional scheme of this embodiment, it is more preferred that the mesh number of the first filter 3 and the mesh number of the second filter 5 are both 30 meshes. The appropriate mesh number selection can effectively intercept larger particles or agglomerates that may cause uneven mixing, and ensure that the coating and other materials pass through the filter at a reasonable speed to achieve a moderate mixing effect. If the mesh number is too large, the material may pass through the filter too slowly, affecting the coating efficiency; if the mesh number is too small, it may not fully play the role of filtering and mixing.

[0029] In this embodiment, the coating die head 1 includes an upper die 11 and a lower die 12, and the discharge channel is located between the upper die 11 and the lower die 12; preferably, it also includes a first connecting piece 4 and a second connecting piece 6, and one end of the second filter screen 5 is connected to the first connecting piece 4 and the other end is connected to the second connecting piece 6; the first connecting piece 4 is connected to the upper die 11, and the second connecting piece 6 is connected to the lower die 12. The second filter screen 5 is fixed by the first connecting piece 4 and the second connecting piece 6 to ensure the stability of the second filter screen 5 and avoid the pressure during discharge from causing the second filter screen 5 to move or be damaged.

[0030] In the optional solution of this embodiment, it is more preferred that the second filter screen 5 is located at the discharge end of the discharge channel.

[0031] In the optional scheme of this embodiment, it is more preferred that the first filter screen 3 and the second filter screen 5 are made of stainless steel. Stainless steel has the advantages of good corrosion resistance, high strength and easy processing and molding. During the coating process, the coating and its components may have certain chemical corrosion. The stainless steel material can ensure that the filter screen is not easily corroded and damaged during long-term use, thereby ensuring the normal function and service life of the filter screen.

[0032] Embodiment 2 like Figure 4 and Figure 5 As shown, this embodiment provides a coating die head 1. The coating die head 1 of this embodiment is basically the same as the coating die head 1 of the first embodiment in structure and working principle, and the only difference is that: The coating die head 1 of this embodiment also includes a first protective block 9 fixedly connected to the upper mold 11 by multiple bolts and a second protective block 8 fixedly connected to the lower mold 12 by multiple bolts, the first connecting piece 4 is clamped between the first protective block 9 and the upper mold 11, and the second connecting piece 6 is clamped between the second protective block 8 and the lower mold 12.

[0033] In this embodiment, a first protective block 9 fixedly connected to the upper mold 11 and a second protective block 8 fixedly connected to the lower mold 12 are provided. The first protective block 9 and the second protective block 8 can play a good role in fixing and protecting the filter screen, thereby preventing the filter screen from being displaced, deformed or damaged due to the impact of paint flow or other external forces during the coating process.

[0034] In the optional scheme of this embodiment, it is more preferred that a gap is formed between the first protection block 9 and the second protection block 8, and the gap is opposite to the discharge channel; the second filter screen 5 is located between the gap and the discharge channel.

[0035] In the optional scheme of this embodiment, preferably, sealing strips 7 are respectively provided between the first protection block 9 and the first connecting piece 4, between the first connecting piece 4 and the upper mold 11, between the second protection block 8 and the second connecting piece 6, and between the second connecting piece 6 and the lower mold 12. The provision of the sealing strips 7 can ensure the sealing of the discharge channel, avoid problems such as paint leakage, and ensure the normal progress of the coating process.

[0036] In the optional scheme of this embodiment, it is more preferred that the width of the interval is equal to the width of the discharge channel; this design enables the second filter 5 to effectively mix the material flowing out of the discharge channel at a suitable position, while ensuring that the discharge characteristics of the discharge channel are not affected, so that the material can flow out of the discharge channel evenly and stably and be coated on the substrate.

[0037] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A coating die head, characterized in that: A first filter screen is provided at the feed hole of the coating die head, and the first filter screen covers the feed hole; a second filter screen is provided at the discharge channel of the coating die head, and the second filter screen covers the discharge channel; the first filter screen is used to mix the material entering the coating die head through the feed hole, and the second filter screen is used to mix the material flowing out through the discharge channel.

2. The coating die head according to claim 1, characterized in that: The mesh number of the first filter screen and the mesh number of the second filter screen are both 30 meshes.

3. The coating die head according to claim 1, characterized in that: The coating die head comprises an upper die and a lower die, and the discharge channel is located between the upper die and the lower die.

4. The coating die head according to claim 3, characterized in that: It also includes a first connecting piece and a second connecting piece, one end of the second filter is connected to the first connecting piece, and the other end is connected to the second connecting piece; the first connecting piece is connected to the upper mold, and the second connecting piece is connected to the lower mold.

5. The coating die head according to claim 4, characterized in that: The second filter screen is located at the discharge end of the discharge channel.

6. The coating die head according to claim 5, characterized in that: It also includes a first protective block fixedly connected to the upper mold and a second protective block fixedly connected to the lower mold, the first connecting piece is clamped between the first protective block and the upper mold, and the second connecting piece is clamped between the second protective block and the lower mold.

7. The coating die head according to claim 6, characterized in that: A gap is formed between the first protection block and the second protection block, and the gap faces the discharge channel; the second filter is located between the gap and the discharge channel.

8. The coating die head according to claim 6, characterized in that: Sealing strips are respectively arranged between the first protection block and the first connecting piece, between the first connecting piece and the upper mold, between the second protection block and the second connecting piece, and between the second connecting piece and the lower mold.

9. The coating die head according to claim 7, characterized in that: The width of the interval is equal to the width of the discharge channel.

10. The coating die head according to claim 1, characterized in that: The first filter screen and the second filter screen are both made of stainless steel.

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