Gas jet enameled wire suspension painting mold
Through the air-regulating distance control device and magnetic suction plate design, the problems of stuck in the paint mold and uneven paint film thickness are solved, and the uniformity and production efficiency of the enameled wire painting are improved, and the flexibility and durability of the mold are enhanced.
Patent Information
- Application Number
- CN202422348541.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Existing paint molds are prone to stuck under the action of high viscosity paint, resulting in uneven paint film thickness and low efficiency in manual adjustment of eccentricity, which cannot ensure the uniformity of paint and production efficiency of enameled wires.
The air-controlled distance control device and magnetic suction plate design are adopted to make the die core suspended in the mold seat, and the distance between the die core and the bracket is adjusted through the blower end, combining the conical hole structure and the wind pressure plate to reduce the impact force of the paint, and achieve flexible adjustment and suspension state of the mold.
It improves the uniformity and overall quality of the paint film, enhances the durability of the mold and the controllability of the paint process, improves production efficiency, and reduces the waste of manpower and material resources.
Smart Images
Figure CN223155730U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of enamelled wire painting dies, in particular to a gas jet enamelled wire suspension painting die. Background Art
[0002] In order to improve the painting uniformity of enamelled wire, at present, a painting die is mostly used to paint the enamelled wire. During use, the insulating paint is first coated on the surface of the copper wire through a painting roller, and then the enamelled wire coated with the paint film is passed through the painting die, and the redundant wire paint on the surface of the enamelled wire is removed by the painting die, so as to control the thickness of the paint film. However, since there are often some angles between the guide rollers on both sides of the painting die, and the enamelled wire will form jumps in multiple directions during the wire-walking process, the painting die also needs to have a self-centering function, that is, the die can swing arbitrarily along with the change of the wire-walking direction of the enamelled wire, so as to avoid the difference in the thickness of the paint film on the left and right sides of the paint film caused by the enamelled wire passing through the die at a bent angle.
[0003] Since the paint film on the surface of the enamelled wire will impact the painting die along the wire-walking direction when the enamelled wire passes through the painting die, the painting die will move along with the enamelled wire; therefore, a corresponding fixing frame needs to be arranged outside the painting die, and the fixing frame limits the painting die to keep the axial position of the painting die fixed. However, with the gradual improvement of environmental protection requirements, the solid content and viscosity of the insulating paint also increase accordingly, resulting in a greater impact force exerted by the enamelled wire on the painting die during the wire-walking process, causing the painting die to tightly adhere to the fixing frame under the action of the impact force and form a large frictional resistance, and the acting force after the enamelled wire deviates is not enough to drive the die to translate at all, resulting in the failure of the self-positioning function of the die. To solve this problem, at present, some manufacturers achieve the required self-positioning effect by limiting the weight of the painting die in the vertical painting machine, that is, the enamelled wire passes through the painting die vertically from bottom to top during wire-walking, and the self-weight of the die is offset by the impact force exerted by the enamelled wire by limiting the weight of the painting die, so that the painting die remains in a suspended state. However, since the copper wire is generally painted by rotating the painting roller during painting, the painting amount on the surface of the copper wire will change with factors such as environmental temperature and the position of the copper wire; after the painting amount of the paint film on the surface of the copper wire changes, the impact force on the painting die will also change, causing it to lose the balance with the painting die of constant gravity, resulting in problems of extrusion limitation or dropping of the painting die, and the suspension effect cannot be maintained.
[0004] For this reason, an existing patent discloses a vertical suspension painting die for enameled wires. By scraping the insulating paint on the surface of the copper wire with the first painting die, an insulating paint layer with a specified thickness can be formed on the surface of the copper wire. When the thickness of the insulating paint layer is limited, the impact force exerted on the second painting die during the wire running of the enameled wire also remains at a constant value. Thus, operators can adjust the weight of the second painting die based on this impact force. However, when adopting the above technical solution, for high-heat-grade enameled wire products, high-viscosity polyimide paint needs to be used as the main insulating material. When using this type of high-viscosity paint, a lot of paint is dragged by the movement of the copper wire, resulting in the paint exerting a thrust on the painting die, causing the painting die to be tightly pressed against the painting die holder. After long-term use, the paint will adhere to the surfaces of the die and the die holder, hindering the free movement of the painting die and unable to achieve the effect of improving the film uniformity (eccentricity) of the enameled wire. Moreover, by manually operating to adjust the film uniformity of the enameled wire, the eccentricity adjuster manually adjusts the horizontal positions of the die and the die bracket based on the film thickness data of the cross-section of the enameled wire, waits for the adjusted wire to be wound up, and then observes the film thickness data of the cross-section of the enameled wire to make further adjustments. Multiple adjustments not only cause a waste of a large amount of manpower and material resources, but also easily result in unstable eccentricity due to factors such as regular replacement of raw and auxiliary materials. Utility Model Content
[0005] Aiming at the deficiencies existing in the above-mentioned prior art, the purpose of the present utility model is to provide a gas jet enameled wire suspension painting die.
[0006] To achieve the above purpose, the present utility model provides the following technical solution: A gas jet enameled wire suspension painting die, comprising: a die base, two brackets are horizontally and spaced on the die base, and a wind control and distance adjustment device is magnetically adsorbed at the bottom of the brackets on the die base; a die core is provided on the die base, a through hole is opened in the die core, and the enameled wire sequentially passes vertically through the through hole of the die core, the through hole provided on the wind control and distance adjustment device, and the brackets, so as to drive the die core to be suspended in the die base, and the blowing end of the wind control and distance adjustment device is arranged towards the side wall of the die core to adjust the distance between the die core and the brackets.
[0007] Furthermore, the through hole on the die core adopts a tapered hole structure, and the narrow end of the tapered hole is arranged towards the wind control and distance adjustment device.
[0008] Furthermore, a wind pressure receiving plate is provided on one surface of the die core close to the wind control and distance adjustment.
[0009] As a preferred solution of the present application, the wind control and distance adjustment device includes: a magnetic adsorption plate acting on the bracket, the through hole is opened on the magnetic adsorption plate, and at least one blowing component is provided on the side wall of the magnetic adsorption plate around the through hole.
[0010] Furthermore, the air blowing assembly is rotatably arranged on the magnetic attraction plate.
[0011] Furthermore, the air blowing assemblies are oppositely arranged and face the side wall of the wind pressure receiving plate.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] In this application, the provided air control and distance adjustment device can flexibly adjust the height of the die core, prevent the phenomenon of the die core being stuck with the bracket, ensure the eccentricity problem of the enameled wire, further improve the uniformity and overall quality effect of painting; and this design and cooperation effect improve the controllability and efficiency of the painting process, and enhance the durability and flexibility of the die core. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:
[0015] Figure 1 It is a schematic diagram of the main structure of the present utility model;
[0016] Figure 2 It is a schematic diagram of the internal structure of the die core in the present utility model
[0017] Figure 3 It is a schematic diagram of the structure of the wind pressure receiving plate of the present utility model
[0018] In the figure: 1, die base; 2, bracket; 3, air control and distance adjustment device; 31, magnetic attraction plate; 32, through hole; 33, air blowing assembly; 4, die core; 41, perforation; 5, wind pressure receiving plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0020] Since enameled wire refers to a metal wire with an insulating paint as an insulating coating, used for winding electromagnetic coils, also known as electromagnetic wire. Enameled wire is divided into round wire and flat wire according to the cross-section. When applying enamel paint to copper flat wire, a vertical enamel painting machine is often used for the enamel painting process. For high-temperature grade enameled wire products, high-viscosity polyimide paint needs to be used as the main insulating material. When using this kind of high-viscosity paint, a lot of paint is dragged by the movement of the copper wire, resulting in the paint generating a thrust on the painting die, so that the painting die is tightly pressed against the painting die holder. After long-term use, the paint will adhere to the surfaces of the mold and the mold holder, hindering the free movement of the painting die and unable to improve the film uniformity (eccentricity) effect of the enameled wire.
[0021] During the production of a single painted mold enameled wire, painting is a very important step. For vertical painting equipment, during production, the insulating paint tank is directly below the painting mold, and the copper wire passes through the paint tank, the painting mold, and then enters the oven from bottom to top. As the copper wire moves, the liquid paint adheres to the surface of the copper wire, enters the painting mold, and the thickness of the paint layer coated on the surface of the copper wire is restricted by the painting mold. The paint with a specific viscosity undergoes a crosslinking curing reaction after being baked at high temperature and evaporating the solvent, and a cured insulating paint can cover the surface of the copper wire. However, there is a gap between the painting mold and the copper wire designed. If the painting mold and the copper wire are not parallel, or the copper wire is not centered in the painting mold, the paint layer on the surface of the copper wire will be uneven in thickness, and the product will show poor eccentricity.
[0022] The uniformity (eccentricity) of the enameled wire film is adjusted manually. The operator adjusts the horizontal positions of the mold and the mold support manually based on the film thickness data of the cross-section of the enameled wire. After the adjusted wire is wound up, the operator observes the film thickness data of the cross-section of the enameled wire again for adjustment. Multiple adjustments not only cause a waste of a large amount of manpower and material resources, but also the eccentricity is prone to instability due to the influence of regular replacement of raw and auxiliary materials, etc.
[0023] Manually adjusting the eccentricity mainly relies on the experience and skills of the operator. Even for an experienced operator, it is inevitable to have negligence or misjudgment during manual operation, resulting in inaccurate adjustment of the eccentricity. The production efficiency is low. Manually adjusting the eccentricity requires a lot of time and manpower. The operator needs to spend time on fine adjustment, and at the same time, frequent manual operations will cause interruptions and delays in the production process, significantly reducing the overall production efficiency.
[0024] Therefore, as Figures 1-3As shown in the figure, the present application provides a gas jet enamelled wire suspension painting die, including: a die base 1, two brackets 2 are horizontally and spaced on the die base 1, and a wind control and distance adjustment device 3 is magnetically adsorbed at the bottom of the brackets 2 on the die base 1 to facilitate horizontal movement of the wind control and distance adjustment device 3; a die core 4 is provided on the die base 1, and a through hole 41 is opened in the die core 4. Since the existing die core 4 is affected by paint or runs into contact with the bracket 2, and the enamelled wire of the present application sequentially passes vertically through the through hole 41 of the die core 4, the through hole 32 provided on the wind control and distance adjustment device 3 and the bracket 2 to drive the die core 4 to float in the die base 1. The aperture of the through hole 41 needs to be determined according to the painting thickness of the processed enamelled wire. Considering that the aperture of the through hole 32 needs to be greater than or equal to the aperture of the through hole 41, for the convenience of operation, the aperture of the through hole 32 can be greater than or equal to the aperture of the through hole 41 and less than or equal to the distance between the brackets 2; in addition, the vertical distance between the die core 4 and the bracket 2 is controlled within 2-5 cm. Since the enamelled wire runs from bottom to top during actual operation, when the enamelled wire carries the paint upward, (because after the equipment has been used for a long time, too much paint on the enamelled wire will accumulate at the through hole 41 of the die core 4, resulting in the upward movement of the enamelled wire), and in the present application, the blowing end of the wind control and distance adjustment device 3 is arranged towards the side wall of the die core 4 to adjust the distance between the die core 4 and the bracket 2, so as to realize that when the enamelled wire drives the die core 4 to move upward, in addition to its own gravity, the die core 4 has a vertical downward force that can be adjusted in magnitude by wind pressure; it should be added that the wind pressure value in the actual operation of the present application is less than or equal to 0.6-0.94, and since the paint of the enamelled wire has extremely strong viscosity, after the applicant's test, it has no influence on the drying of the enamelled wire.
[0025] The through hole 41 on the die core 4 adopts a tapered hole structure, and the narrow end of the tapered hole is arranged towards the wind control and distance adjustment device 3. The taper of the tapered hole is 1:3-5.5, which significantly reduces the paint impact force received by the die during the painting process and makes the resultant force concentrated in the direction of the die center line, effectively solving the eccentricity problem of painting, thereby improving the uniformity and overall quality of painting.
[0026] A wind pressure receiving plate 5 is provided on the surface of the die core 4 close to the wind control and distance adjustment. The wind pressure receiving plate 5 is arranged in a circular ring shape, and its outer long radius is three times the radius of the die core 4, so as to effectively obtain wind pressure while reducing the influence on the enamelled wire; during actual operation, the wind pressure receiving plate 5 is mainly adhered to the die with special epoxy resin, and can be not eroded by the special solvent N-methylpyrrolidone in the polyimide paint, ensuring that it does not fall off for a long time, and enhancing the durability and reliability of the die.
[0027] The air control and distance adjustment device 3 includes: a magnetic attraction plate 31 acting on the bracket 2, a through hole 32 is formed on the magnetic attraction plate 31, and at least one air blowing assembly 33 is provided on the magnetic attraction plate 31 and around the side wall of the through hole 32. The air blowing assembly 33 uses the prior art, as long as this function can be achieved. This application specifically shows an example: an adjustable nozzle and an air pump with independent air extraction are adopted, combined with a pressure regulating valve, to achieve precise control and stable output of the air flow. This design allows for improving the controllability and efficiency of the painting process according to the painting requirements and air flow intensity, achieving a relative suspension state between the painting die and the die holder, and effectively preventing the jamming phenomenon between the painting die and the die holder during the painting process.
[0028] The air blowing assembly 33 is rotatably arranged on the magnetic attraction plate 31 to flexibly adjust the jet angle, facilitating the quick adjustment of the device position according to the line position to ensure that the gas jet is centered, further improving the painting effect.
[0029] The air blowing assemblies 33 are oppositely arranged and face the side wall of the wind pressure receiving plate 5 to ensure effective stability during actual operation. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.
Claims
1. A gas jet enamelled wire suspension painting die, characterized in that Including: A die base (1), two brackets (2) are horizontally and spacedly arranged on the die base (1), and an air control and distance adjustment device (3) is magnetically adsorbed at the bottom of the brackets (2) on the die base (1); a die core (4) is arranged on the die base (1), a perforation (41) is formed in the die core (4), and the paint wire sequentially passes vertically through the perforation (41) of the die core (4), the through hole (32) provided on the air control and distance adjustment device (3), and the bracket (2) to drive the die core (4) to be suspended in the die base (1), and the blowing end of the air control and distance adjustment device (3) is arranged towards the side wall of the die core (4) to adjust the distance between the die core (4) and the bracket (2).
2. The suspension painting die for gas jet enamelled wire according to claim 1, wherein The perforation (41) on the die core (4) adopts a tapered hole structure, and the narrow end of the tapered hole is arranged towards the air control and distance adjustment device (3).
3. The suspension paint coating die for gas jet enamelled wire according to claim 2, characterized in that, A wind pressure receiving plate (5) is arranged on the surface of the die core (4) close to the air control and distance adjustment.
4. The gas jet enamelled wire suspension painting die according to claim 3, wherein The air control and distance adjustment device (3) includes: a magnetic adsorption plate (31) acting with the bracket (2), the through hole (32) is formed in the magnetic adsorption plate (31), and at least one blowing assembly (33) is arranged on the side wall of the magnetic adsorption plate (31) around the through hole (32).
5. The gas jet enamelled wire suspension painting die according to claim 4, characterized in that, The blowing assembly (33) is rotatably arranged on the magnetic adsorption plate (31).
6. The floating paint coating die for gas jet enameled wire according to claim 4, wherein The blowing assemblies (33) are oppositely arranged and face the side wall of the wind pressure receiving plate (5).