Fine enameled wire coating die

Abstract

The present invention provides a fine enameled wire painting mold, which includes a core mold, the core mold is covered and fixed at the center position of a mold base, the center part of one end of the mold base is processed to form an inlet section, the tail end of the inlet section is provided with a liquid storage cavity, the liquid storage cavity is connected to the core mold, the center part of the other end of the mold base is processed to form an outlet section, the outlet section is connected to the outlet end of the core mold; the depth of the inlet section is less than the depth of the outlet section. This mold can be used for painting fine wires, and then cooperate with the automated painting production line to realize the automated production of enameled wires, especially suitable for the production needs of micro wires with a diameter of less than 0.1 mm.

Description

Technical Field

[0001] The invention belongs to the field of enameled wire painting moulds, in particular to a micro enameled wire painting mould. Background Art

[0002] At present, there are two different ways to paint fine enameled wire:

[0003] Method 1: Felt painting. The main disadvantages of this method during the painting process are: first, the glue coating is uneven and the thickness of the glue coating cannot be guaranteed; second, during the felt painting process, since the wire needs to pass through the felt, the friction resistance is large, and the tensile strength of the fine wire is low, and the fine wire is easily broken; third, since the diameter of the fine wire is small and it is easy to break, the line speed of the painting cannot be increased by felt painting, and the painting efficiency is low.

[0004] Method 2: Using a polycrystalline painting mold, such as a painting mold for fine enameled wire disclosed in CN 109887683 A, the main disadvantages of which are, first, during the painting process, the fine wire is led out from the inlet section to the outlet section of the mold. The length of the inlet section is relatively long, and the paint liquid is easy to gather inside this section, which increases the resistance of the fine wire passing through the mold, and then causes the fine wire to be easily broken, especially for enameled wires with a diameter of less than 0.02 mm, which are more likely to be broken; second, during the processing of the above-mentioned mold, it is necessary to first process the mold sleeve and then assemble the mold core unit into the mold sleeve. The above-mentioned processing and manufacturing process is relatively complicated and cannot adapt to the processing and manufacturing of small-sized molds; third, the above-mentioned mold is large in size and requires a large installation space, which cannot be suitable for the needs of high-density automated production of fine enameled wires. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a fine enameled wire painting mold, which can be used for painting fine wires, and then cooperate with an automated painting production line to realize automated production of enameled wires, and is particularly suitable for the production needs of fine wires with a diameter of less than 0.02 mm.

[0006] In order to realize the above-mentioned technical features, the purpose of the present invention is achieved as follows: a fine enameled wire painting mold, which includes a core mold, the core mold is covered and fixed at the center position of the mold base, the center part of one end of the mold base is processed to form an inlet section, the tail end of the inlet section is provided with a liquid storage cavity, the liquid storage cavity is connected to the core mold, the center part of the other end of the mold base is processed to form an outlet section, and the outlet section is connected to the outlet end of the core mold; the depth of the inlet section is less than the depth of the outlet section.

[0007] The inlet section adopts a tapered hole structure, the small end of which is butted against the liquid storage chamber, and the inlet taper angle N of the tapered hole structure is 30-150°.

[0008] The depth of the entrance section is 0.2-2 mm.

[0009] The depth of the liquid storage cavity is 0.1-3 mm.

[0010] The outlet section adopts a tapered hole structure, and the small end of the tapered hole structure is butted against the outlet of the core mold.

[0011] The thickness of the tail wall formed between the outlet end of the outlet section and the outer circle of the die base is 0.2-1 mm.

[0012] The outer circle of the die base is processed with a positioning step, the outer circle of the die base and one end where the inlet section is located is processed with a chamfer, and an overflow groove is processed on the cone where the chamfer is located.

[0013] The core mold is made of polycrystalline diamond, and a plurality of transitionally connected paint holes are processed at the center of the core mold, including a first cone section, the tail of which is transitionally connected to the straight wall hole section through a second cone section.

[0014] The aperture of the core mold is 0.02-0.10 mm.

[0015] When painting, the fine wire enters from the inlet section and passes through the liquid storage cavity, the core mold and the outlet section in sequence;

[0016] During production, the core mold and the mold base are integrally sintered and then the mold base is machined.

[0017] The present invention has the following beneficial effects:

[0018] 1. Compared with the existing painting mold, the painting mold of the present invention improves the existing wire passing method by passing the fine wire from the entrance section with a small depth through the core mold and then pulling it out from the exit section. In this process, the friction resistance encountered by the fine wire in the process of passing through the mold is greatly reduced, and the problem of the fine wire being broken is effectively prevented.

[0019] 2. Since the diameter of the fine wire is small and the amount of glue coated on its outer surface per unit length is small, there is no need to set up a large-volume entrance section paint storage cavity similar to the existing one. The present invention only needs to set up a liquid storage cavity at the tail of the entrance section to complete the paint storage, thereby effectively reducing the viscous resistance of the paint liquid to the fine wire.

[0020] 3. The mold of the present invention can increase the line speed during the painting process, thereby improving the painting efficiency.

[0021] 4. Existing painting molds are composed of two parts: a mold sleeve and a mold core. The manufacturing process is to first sinter the mold core, then process the mold core, then process the matching mold sleeve, and finally assemble the mold core into the mold sleeve. The above process is relatively complicated. More importantly, it cannot well guarantee the concentricity of the mold core and the mold sleeve after assembly, which in turn affects the subsequent painting process.

[0022] The mold of the present invention adopts a manufacturing process of integral sintering and then machining. This process can well ensure the concentricity between the inlet section, the liquid storage cavity, the wall hole section, the second cone section and the first cone section, as well as the roundness of the corresponding holes, and ultimately ensure the concentricity of the fine wire passing through the corresponding holes, effectively preventing circular runout and ensuring the quality of painting.

[0023] 5. By setting the outlet section at the tail, it is possible to facilitate threading, because the diameter of the fine wire is usually only 0.02mm. Therefore, in the early stage of painting, the fine wire needs to be inserted from the entrance section and out of the exit section. Therefore, through the tapered design of the exit section, it is convenient to clamp the end of the fine wire at the exit section with the help of other clamps, and then thread it out.

[0024] 6. The painting mold of the present invention can adapt to the painting of fine lines with a diameter of only 0.02 mm, thereby enhancing its adaptability.

[0025] 7. The overall size of the painting mold of the present invention is small, and the installation space occupied is small. Its maximum outer diameter can be controlled below 8 mm, and its length can also be controlled below 8 mm, thereby reducing its installation space. It is ensured that it can be well adapted to high-density production lines and improve the production efficiency of enameled wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is the front view of the present invention.

[0028] Figure 2 For the present invention Figure 1 Medium PP view.

[0029] Figure 3 It is a cross-sectional view with angle marks of the present invention.

[0030] Figure 4 For the present invention Figure 2 A is a partial enlarged view.

[0031] In the figure: inlet section 1, liquid storage chamber 2, overflow groove 3, positioning step 4, outlet section 5, tail wall 6, core mold 7, chamfer 8, mold base 9;

[0032] Wall hole section 701 , second cone section 702 , first cone section 703 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0034] See also Figure 1-4 The fine enameled wire painting mold comprises a core mold 7, which is covered and fixed at the center of a mold base 9, and the center of one end of the mold base 9 is processed to form an inlet section 1, and the tail end of the inlet section 1 is provided with a liquid storage cavity 2, which is connected to the core mold 7 by docking, and the center of the other end of the mold base 9 is processed to form an outlet section 5, which is docked with the outlet end of the core mold 7; the depth of the inlet section 1 is less than the depth of the outlet section 5. By adopting the painting mold with the above structure, the existing painting mold is changed, the painting quality is improved, the painting efficiency is improved, and the production cost is effectively reduced.

[0035] Furthermore, the inlet section 1 adopts a tapered hole structure, the small end of which is connected to the liquid storage chamber 2, and the inlet taper angle N of the tapered hole structure is 30-150°. The above-mentioned inlet section 1 can effectively reduce the friction resistance of the fine wire passing through the mold.

[0036] Furthermore, the depth of the inlet section 1 is 0.2-2 mm. The above depth effectively reduces the accumulation of excessive paint liquid at the inlet section 1 and reduces the viscosity to a certain extent.

[0037] Furthermore, the depth of the liquid storage chamber 2 is 0.1-3 mm. By using a liquid storage chamber 2 with a smaller volume, paint storage can be completed, thereby effectively reducing the viscous resistance of the paint liquid to the fine line. This is obviously different from the existing structure that uses a large conical end as the inlet section and adopts a large paint storage capacity.

[0038] Further, the outlet section 5 adopts a tapered hole structure, and the small end of the tapered hole structure is butted against the outlet of the core mold 7. The outlet section 5 here mainly serves to facilitate threading.

[0039] Furthermore, the thickness of the tail wall 6 formed between the outlet end of the outlet section 5 and the outer circle of the mold base 9 is 0.2-1 mm. The thickness of the tail wall 6 mentioned here is mainly to ensure the structural strength of the tail to prevent it from being crushed during installation.

[0040] Furthermore, a positioning step 4 is machined on the outer circumference of the die base 9, a chamfer 8 is machined on the outer circumference of the die base 9 and at one end where the inlet section 1 is located, and an overflow groove 3 is machined on the cone where the chamfer 8 is located. The overflow groove 3 can collect the paint liquid scraped off during the painting process to prevent it from overflowing.

[0041] Furthermore, the core mold 7 is made of polycrystalline diamond, and a plurality of transitionally connected painting holes are processed at the center of the core mold 7, including a first cone section 703, and the tail of the first cone section 703 is transitionally connected to the straight wall hole section 701 through a second cone section 702. The core mold 7 has wear resistance, and can ensure good roundness after processing, and the processed circular hole has high precision, which can well adapt to the painting of fine lines with a diameter of 0.02-0.10mm.

[0042] Furthermore, the aperture of the core mold 7 is 0.02-0.10 mm. The above aperture can be well adapted to the production of fine line painting.

[0043] Furthermore, when painting, the fine wire enters from the entrance section 1 and passes through the liquid storage chamber 2, the core mold 7 and the exit section 5 in sequence; through the above-mentioned threading method, the traditional thinking mode and limitations are abandoned, while ensuring the uniformity and quality of painting, the painting efficiency and line speed are improved, and the friction resistance is effectively reduced to prevent it from being pulled apart.

[0044] Furthermore, during production, the core mold 7 and the mold base 9 are integrally sintered, and then the mold base 9 is machined. Through the above-mentioned molding preparation method, while ensuring the processing size accuracy, the processing process is simplified, the processing efficiency is improved, and the processing cost is reduced.

[0045] Furthermore, the maximum outer diameter of the mold base 9 can be controlled below 8 mm, and the length can also be controlled below 8 mm, thereby reducing its installation space.

[0046] Furthermore, the cone angle P of the first cone section 703 is:

[0047] The cone angle Q of the second cone section 702 is 110-160°

[0048] The diameter R of the straight wall hole section 701 is 30-80°.

[0049] The working process and principle of the present invention are:

[0050] First, the above-mentioned mold is installed on the painting production line, and then the fine wire is introduced from the inlet section 1 of the mold, and passes through the liquid storage chamber 2, the core mold 7 and the outlet section 5 in sequence. Through subsequent traction, it is stably passed through the core mold 7 to realize the painting process.

Claims

1. Fine enameled wire painting die, characterized by: It comprises a core mold (7), the core mold (7) is covered and fixed at the center position of a mold base (9), the center part of one end of the mold base (9) is processed to form an inlet section (1), the tail end of the inlet section (1) is provided with a liquid storage cavity (2), the liquid storage cavity (2) is connected to the core mold (7), the center part of the other end of the mold base (9) is processed to form an outlet section (5), the outlet section (5) is connected to the outlet end of the core mold (7); the depth of the inlet section (1) is less than the depth of the outlet section (5); The inlet section (1) adopts a conical hole structure, the small end of the conical hole structure is connected to the liquid storage chamber (2), and the inlet taper angle N of the conical hole structure is 30-150°; The depth of the inlet section (1) is 0.2-2 mm; The depth of the liquid storage cavity (2) is 0.1-3 mm.

2. The fine enameled wire painting die according to claim 1, characterized in that: The outlet section (5) adopts a tapered hole structure, and the small end of the tapered hole structure is butted against the outlet of the core mold (7).

3. The fine enameled wire painting die according to claim 2, characterized in that: The thickness of the tail wall (6) formed between the outlet end of the outlet section (5) and the outer circle of the die base (9) is 0.2-1 mm.

4. The fine enameled wire painting die according to claim 1, characterized in that: A positioning step (4) is machined on the outer circle of the die base (9), a chamfer (8) is machined on the outer circle of the die base (9) and at one end where the inlet section (1) is located, and an overflow groove (3) is machined on the cone where the chamfer (8) is located.

5. The fine enameled wire painting die according to claim 1, characterized in that: The core mold (7) is made of polycrystalline diamond, and a plurality of transitionally connected paint holes are processed at the center of the core mold (7), including a first cone section (703), the tail of the first cone section (703) being transitionally connected to the straight wall hole section (701) via a second cone section (702).

6. The fine enameled wire painting die according to claim 1, characterized in that: The aperture of the core mold (7) is 0.02-0.10 mm.

7. The fine enameled wire painting die according to claim 1, characterized in that: When painting, the fine wire enters from the inlet section (1) and passes through the liquid storage chamber (2), the core mold (7) and the outlet section (5) in sequence; During production, the core mold (7) and the mold base (9) are integrally sintered and formed, and then the mold base (9) is machined and formed.

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