Mold device for coating enameled wire

Abstract

The utility model relates to a mould device for coating enameled wires, which comprises a paint tank, a liquid storage tank and a mould guide rail, the paint tank and the liquid storage tank are respectively communicated with a paint tank, a first coating medium and a second coating medium which are opposite up and down are arranged above the paint tank, the first coating medium is positioned below and contacted with paint liquid, and the second coating medium is positioned above and contacted with the paint liquid. A first pressing block is attached to the upper surface of the second coating medium, and the second coating medium and the first pressing block are fixed to the mold guide rail; a first felt and a second felt which are vertically opposite to each other are arranged above the liquid storage tank, the first felt is located on the lower portion, the second felt is located on the upper portion, a second pressing block is attached to the upper surface of the second felt, and the second felt and the second pressing block are fixed to the mold guide rail. According to the invention, the coating is carried out by adopting the pressurized coating medium, so that the amount of paint can be better and quantitatively controlled, the surface of the wire can be polished to a certain extent, and the redundant paint liquid is removed by adopting the pressurized felt after coating and is recycled, so that the uniform and stable coating of the paint on the wire is effectively realized, and the performance of the enameled wire is improved.

Description

Technical Field

[0001] This utility model belongs to the field of enameled wire technology, and specifically relates to a mold device for coating enameled wire. Background Technology

[0002] The manufacturing process of enameled wire includes unwinding, annealing, coating, baking, cooling, and winding. The coating process is particularly crucial, as it involves applying enamel to the metal conductor to form a uniform enamel layer of a certain thickness. With the development of the enameled wire industry and its widespread application in motors, rotors, and other electronic and electrical components, environmental protection requirements are becoming increasingly stringent. Therefore, the market demand for environmentally friendly water-based enamels is growing. Ensuring efficient coating of water-based enamels in enameled wire products is of paramount importance.

[0003] Currently, the production of enameled wires of different diameters typically involves coating and baking on a horizontal enameling machine. Generally, the coating process on a horizontal enameling machine uses a mold that employs a roller and felt coating method. The roller rotates within the enamel box, conveying the enamel liquid. The copper wire adheres to the enamel on the roller and then enters between two layers of felt, where the felt covers the surface of the bare wire. Enameled wires produced using this mold lack quantitative control, making it difficult to control the surface thickness of the enamel. Furthermore, product performance testing often reveals uneven coating and a tendency for the softening breakdown voltage to be lower than expected.

[0004] For example, the patent document with publication number CN221406894U discloses an enameled wire mold that uses two paint tanks and paint wheels, as well as a mold core in the mold base, to roll-coat copper wire with paint through the staggered arrangement of the first and second parts. The amount and type of paint applied to the copper wire are adjusted according to the diameter of the mold core hole. The device is relatively complex in structure, and the process is relatively cumbersome if the mold needs to be replaced. Moreover, the excess paint in the mold core is not reused, which is quite wasteful. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a mold device for coating enameled wire, comprising a paint tank, a liquid storage tank, and a mold guide rail. The paint tank and the liquid storage tank are respectively connected to a paint container. Above the paint tank, a first coating medium and a second coating medium are arranged opposite each other, with the first coating medium located below and in contact with the paint liquid, and the second coating medium located above. A first pressing block is attached to the upper surface of the second coating medium. The second coating medium and the first pressing block are fixed on the mold guide rail. Above the liquid storage tank, a first felt and a second felt are arranged opposite each other, with the first felt located below and the second felt located above. A second pressing block is attached to the upper surface of the second felt. The second felt and the second pressing block are fixed on the mold guide rail.

[0007] In use, the mold of this utility model delivers the paint liquid from the paint can to the paint tank. The coating medium absorbs the paint liquid through the microporous structure. The wire is wetted by the paint in the paint tank through the coating medium. The upper and lower first and second coating media coat the surface of the wire. The upper second coating medium is pressed by a pressing block. Excess paint is further scraped off by the first and second felts. At the same time, the upper second felt is pressed by the pressing block. The excess paint that is scraped off can be temporarily stored in the liquid storage tank. Since the liquid storage tank is connected to the paint can, it can then be returned to the paint can for recycling.

[0008] In some embodiments, a metering pump is provided between the paint tank and the paint container to quantitatively deliver the paint liquid from the paint container to the paint tank, ensuring accurate metering and better control of the paint film thickness.

[0009] In some embodiments, a return pipe is provided between the liquid storage tank and the paint tank to transport the recovered paint liquid in the liquid storage tank back to the paint tank.

[0010] In some embodiments, the first and second coating media have microporous structures to better adsorb the paint liquid.

[0011] In some embodiments, a flow divider is provided below the first coating medium to facilitate more uniform adsorption of the paint liquid by the coating medium and better coating.

[0012] Preferably, the side of the flow divider plate facing the first coating medium is provided with a plurality of uniformly arranged grooves, and the flow divider plate is provided with through holes, the through holes and the grooves being connected by flow channels.

[0013] More preferably, the ratio of the length to the width of the groove is between 10:1 and 50:1.

[0014] More preferably, the through holes have two or more.

[0015] In some embodiments, the first clamping block and the second clamping block are respectively fixed on the mold guide rail by pressure adjusting screws, and the contact pressure between the first clamping block and the second coating medium, and / or between the second clamping block and the second felt is adjusted by tightening or loosening the pressure adjusting screws.

[0016] Preferably, the pressure adjusting screw is fitted with a compression spring so as to maintain a constant pressure applied to the clamping block through elastic coupling.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention relates to a mold device for coating enameled wire. It employs a pressure-applied coating medium, which allows for better quantitative control of the coating amount and a degree of polishing of the wire surface. After coating, excess coating is removed using a pressure felt and recycled, effectively achieving uniform and stable coating of the wire and improving the performance of the enameled wire. Furthermore, the coating medium in this invention can be quickly changed according to different types of enamel, resulting in low maintenance costs and ensuring the effectiveness of the coating process. Attached Figure Description

[0019] Figure 1 This is one of the schematic diagrams of a mold device for coating enameled wire according to an embodiment of the present utility model;

[0020] Figure 2 This is a second schematic diagram of the mold device for coating enameled wire according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the flow divider structure of the enameled wire coating mold device according to an embodiment of the present utility model;

[0022] Figure 4 This is one of the schematic diagrams of the pressure adjusting screw structure of the enameled wire coating mold device according to an embodiment of this utility model;

[0023] Figure 5 This is the second schematic diagram of the pressure adjusting screw structure of the enameled wire coating mold device according to an embodiment of this utility model. Detailed Implementation

[0024] To make the purpose, technical solution and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Combination Figure 1 and 4 A mold device for coating enameled wire includes a paint tank 1 and a liquid storage tank 2, a mold guide rail 14, and the paint tank 1 and liquid storage tank 2 are respectively connected to a paint container 3. Above the paint tank 3, a first coating medium 5 and a second coating medium 4 are arranged opposite each other, with the first coating medium 5 located below and in contact with the paint liquid, and the second coating medium 4 located above. A first pressing block 8 is attached to the upper surface of the second coating medium 4. The second coating medium 4 and the first pressing block 8 are fixed to the mold guide rail 14. Above the liquid storage tank 2, a first felt 7 and a second felt 6 are arranged opposite each other, with the first felt 7 located below and the second felt 6 located above. A second pressing block 9 is attached to the upper surface of the second felt 6. The second felt 6 and the second pressing block 9 are fixed to the mold guide rail 14. The second coating medium 5 can be disposed inside the paint tank, such as... Figure 1As shown, a protrusion is provided on the inner wall of the paint tank, and the second coating medium 5 is placed on the protrusion or fixed on the mold guide rail 14. It can be adjusted up and down according to the level of the paint liquid in the paint tank. Similarly, the first felt 7 can also be placed in the liquid storage tank 2 as the first coating medium 5, or it can be fixed on the mold guide rail 14.

[0026] In use, the paint liquid in the paint can is delivered to the paint tank. The coating medium absorbs the paint liquid, and the wire is immersed in the paint in the paint tank through the coating medium. The upper and lower first and second coating media coat the surface of the wire, and the upper second coating medium is pressed by a pressing block. The excess paint is further scraped off by the first and second felts. At the same time, the upper second felt is pressed by the pressing block. The excess paint that is scraped off can be temporarily stored in the liquid storage tank. Since the liquid storage tank is connected to the paint can, it can then be returned to the paint can for recycling.

[0027] Reference Figure 2 In one embodiment, a metering pump 10 is provided between the paint tank 1 and the paint container 3. The metering pump quantitatively delivers the paint liquid in the paint container to the paint tank, which is accurate and better controls the paint film thickness.

[0028] Reference Figure 2 In one embodiment, a return pipe 11 is provided between the liquid storage tank and the paint tank to transport the recovered paint liquid in the liquid storage tank back to the paint tank.

[0029] In one embodiment, the first coating medium 5 and the second coating medium 4 have a microporous structure, which can better adsorb the paint liquid.

[0030] Reference Figure 2 In one embodiment, a flow divider 12 is provided below the first coating medium 5, and the first coating medium 5 is placed on the flow divider 12 so that the coating medium can more evenly absorb the paint liquid and better coat it.

[0031] Reference Figure 3 In one embodiment, the flow divider 12 has a plurality of uniformly arranged grooves 121 on the side facing the first coating medium 5, and the flow divider 12 has through holes 122, which are connected to the grooves 121 by flow channels. The length-to-width ratio of the grooves is between 10:1 and 50:1, and there are two or more through holes 122.

[0032] Reference Figure 4 In one embodiment, the first clamping block 8 and the second clamping block 9 are respectively fixed to the mold guide rail by pressure adjusting screws 13. The contact pressure between the first clamping block 8 and the second coating medium 4, and / or between the second clamping block 9 and the second felt 6, is adjusted by tightening or loosening the pressure adjusting screws 13. (See reference...) Figure 5The pressure adjusting screw 13 is equipped with a compression spring so as to maintain a constant pressure applied to the clamping block through elastic coupling.

[0033] 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.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mold device for coating enameled wire, characterized in that, It comprises a paint tank (1), a liquid storage tank (2), a mold guide rail (14), The paint tank (1) and the liquid storage tank (2) are respectively communicated with a paint tank (3), and a first coating medium (5) and a second coating medium (4) are oppositely arranged above the paint tank (1), the first coating medium (5) is located below and contacts with paint, and the second coating medium (4) is located above, and a first pressing block (8) is arranged on the upper surface of the second coating medium (4), the second coating medium (4) and the first pressing block (8) are fixed on the mold guide rail (14). A first felt (7) and a second felt (6) are oppositely arranged above the liquid storage tank (2), the first felt (7) is located below, the second felt (6) is located above, and a second pressing block (9) is arranged on the upper surface of the second felt (6), the second felt (6) and the second pressing block (9) are fixed on the mold guide rail (14).

2. The enameled wire coating mold apparatus according to claim 1, wherein A metering pump (10) is arranged between the paint tank (1) and the paint tank (3), and the metering pump (10) is used for quantitatively conveying paint in the paint tank (3) to the paint tank (1).

3. The enameled wire coating mold apparatus of claim 1, wherein, A return pipe (11) is arranged between the liquid storage tank (2) and the paint tank (3), and the return pipe (11) is used for conveying the recovered paint in the liquid storage tank (2) back to the paint tank (3).

4. The enameled wire coating mold apparatus of claim 1, wherein The first coating medium (5) and the second coating medium (4) have a microporous structure.

5. The enameled wire coating mold apparatus of claim 1, wherein The first coating medium (5) is further provided with a flow distribution plate (12).

6. The enameled wire coating mold apparatus of claim 5, wherein, The flow distribution plate (12) is provided with a plurality of uniformly arranged grooves (121) on the side facing the first coating medium (5), and the flow distribution plate (12) is provided with through holes (122), and the through holes (122) and the grooves (121) are communicated through flow channels.

7. The enameled wire coating mold apparatus of claim 6, wherein The length-width ratio of the grooves (121) is between 10:1 and 50:

1.

8. The enameled wire coating mold apparatus of claim 6, wherein, The through holes (122) have two or more than two.

9. The enameled wire coating mold apparatus of claim 1, wherein, The first pressing block (8) and the second pressing block (9) are respectively fixed on the mold guide rail (14) through pressure adjusting screws (13), and the contact pressure of the first pressing block (8) and the second coating medium (4), and / or the second pressing block (9) and the second felt (6) is adjusted by tightening or loosening the pressure adjusting screws (13).

10. The enameled wire coating mold apparatus of claim 9, wherein, The pressure adjusting screw (13) is provided with a compression spring.

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