Painting auxiliary tool for vertical enameling machine

Abstract

The utility model discloses an auxiliary painting tool for a vertical enamelling machine, which relates to the technical field of enameled wire production and comprises a painting frame, a painting mold and a blocking part, an upper limiting plate and a lower limiting plate which are horizontally arranged are fixedly mounted on the painting frame, and wire through holes are formed in the upper limiting plate and the lower limiting plate; the painting mold can vertically move between the upper limiting plate and the lower limiting plate, the blocking part is arranged on the upper limiting plate, the painting mold can abut against the blocking part, and the contact area of the painting mold and the blocking part is smaller than the contact area of the painting mold and the painting frame. Through the arrangement of the blocking part, the contact area of the painting mold and the blocking part is smaller than the contact area of the painting mold and the painting frame, so that the friction force borne by the painting mold can be reduced, the painting mold can freely slide to be concentric with the enameled wire, and the eccentricity of the enameled wire is stabilized in a small range.

Description

Technical Field

[0001] The utility model relates to the technical field of enameled wire production, in particular to a painting auxiliary tooling for a vertical enameling machine. Background Art

[0002] Painting refers to the process of coating wire paint on a wire to form a uniform paint layer with a certain thickness. The currently adopted painting methods are mainly divided into two types: die painting and felt painting. Die painting is suitable for high-viscosity paint and high-speed production. The main advantages of die painting are that the thickness of the paint film is easy to control, the solvent can be saved, the cost can be reduced, and the pollution can be reduced. Therefore, die painting is the most common painting method.

[0003] Die painting uses a die with a hole shape and specific dimensions. When in use, the insulating paint is first coated on the surface of the wire through a painting roller, and then the enamelled wire coated with the paint film is passed through the painting die, and the excess 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.

[0004] At present, the enameling machines on the market mainly adopt the design of fixed dies. The wire passes through the fixed die, and the die part floats under the action of the buoyancy of the paint. This method is greatly affected by factors such as the viscosity, temperature, and flow rate of the paint. When the enameling machine coats high-viscosity insulating paint, the floating die may float up, resulting in unstable eccentricity and poor eccentricity of the product.

[0005] The Chinese patent document with the publication number CN219017331U discloses an enameling flat wire painting die for a vertical enameling machine, which includes a painting die frame and a die core. The painting die frame is correspondingly provided with an upper limit plate and a lower limit plate. The die core can move vertically between the upper limit plate and the lower limit plate. The upper limit plate and the lower limit plate are correspondingly provided with wire passing holes. The center of the die core is axially provided with a painting hole; in the vertical direction, the painting hole is concentric with the upper and lower wire passing holes, and the size of the die core is adapted to the size of the wire passing holes; a limiting shoulder platform is circumferentially arranged on the outer wall of the middle of the die core, and a plain bearing is arranged above the limiting shoulder platform. By sleeving a plain bearing outside the die core, the plain bearing can greatly reduce the friction between the die core and the bottom of the limit plate, so that when the die core is eccentric, it can freely rotate under the action of the tension of the insulating paint, so as to achieve the concentricity of the die core and the flat wire all the time, ensuring the uniformity of the paint film coating.

[0006] However, the plain bearing is prone to sticking with insulating paint or self-wearing, resulting in inability to slide. This situation will cause unstable eccentricity of the paint film; the enamelled wire will work for a long time after starting up. After the plain bearing is damaged halfway, the enamelled wire needs to be cut off and replaced. This method is not easy to replace, and it will have effects such as uneven painting at the joint, which will have a great impact on the quality of the enamelled wire. Utility Model Content

[0007] The purpose of the present utility model is to provide a painting auxiliary tooling for a vertical enameling machine, which can stabilize the eccentricity of the enameled wire within a small range.

[0008] To achieve the above purpose, the present utility model adopts the following technical solutions: A painting auxiliary tooling for a vertical enameling machine includes a painting rack, a painting die, and a blocking part. A horizontally arranged upper limit plate and a lower limit plate are fixedly installed on the painting rack. Through holes for wire passing are opened on both the upper limit plate and the lower limit plate. The painting die can move vertically between the upper limit plate and the lower limit plate. The blocking part is arranged on the upper limit plate, and the painting die can abut against the blocking part.

[0009] The technical principle of the present utility model is as follows:

[0010] Through the setting of the blocking part, compared with the direct contact between the painting die and the upper limit plate in the prior art, the contact area between the painting die and the blocking part will be significantly reduced, and the painting die will float up and down under the buoyancy of the insulating paint, so as to reduce the friction force received by the painting die, and further enable the painting die to slide freely and keep concentric with the enameled wire, so that the eccentricity of the enameled wire is stabilized within a small range.

[0011] Further, the blocking part includes a connecting piece and a U-shaped limiting piece made of stainless steel. The limiting piece is clamped on the upper limit plate, and both the upper and lower sides of the limiting piece are parallel to the surface of the upper limit plate. The connecting piece is arranged between the two limiting pieces for connecting the limiting pieces.

[0012] Further, the connecting piece abuts against the side wall of the upper limit plate, and the end of the limiting piece abuts against the side wall of the painting rack.

[0013] Further, openings communicating with the through holes for wire passing are opened on both the upper limit plate and the lower limit plate.

[0014] Further, partition plates are fixedly installed on both sides of the painting rack.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. By reducing the friction force, the painting die can slide freely and keep concentric with the enameled wire, so that the eccentricity of the product can be stabilized within a small range.

[0017] 2. Through the setting that both the upper and lower sides of the limiting piece are parallel to the surface of the upper limit plate, the painting die can always be kept horizontal when contacting the limiting piece, so that the eccentricity of the product can be further stabilized within a small range.

[0018] 3. When the blocking part is worn and needs to be replaced, directly remove the blocking part from the upper limit plate and clamp on another blocking part, which is convenient to operate and has a low cost. Description of the Drawings

[0019] Figure 1 is the structural schematic diagram of the present utility model;

[0020] Figure 2 is the top view of the present utility model;

[0021] Figure 3 is the structural schematic diagram of the blocking part in the present utility model;

[0022] Figure 4 is the structural schematic diagram of the present utility model in actual use

[0023] Figure 5 are the eccentricity data in actual production when the device is not used;

[0024] Figure 6 are the eccentricity data in actual production when the device is used.

[0025] In the above-mentioned drawings:

[0026] 1. Painting rack; 2. Lower limit plate; 3. Upper limit plate; 4. Wire passing hole; 5. Opening; 6. Partition board; 7. Conducting wire;

[0027] 8. Blocking part; 801. Connecting piece; 802. Limiting piece; 8021. Mounting plate; 8022. Upper limiting rod; 8023. Lower limiting rod;

[0028] 9. Painting die. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; the structures described in various embodiments can be freely combined without conflicts in terms of structure or principle.

[0030] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0032] The following describes some embodiments of the present utility model with reference to the drawings:

[0033] As Figures 1-4 shown, the present utility model provides a painting auxiliary tooling 9 for a vertical enameling machine, which includes a painting rack 1, a painting die 9 and a blocking part 8. A horizontally arranged upper limit plate 3 and a lower limit plate 2 are fixedly installed on the painting rack 1. Through holes 4 are opened on both the upper limit plate 3 and the lower limit plate 2, and openings 5 communicating with the through holes 4 are opened on both the upper limit plate 3 and the lower limit plate 2. The painting die 9 can move vertically between the upper limit plate 3 and the lower limit plate 2. The blocking part 8 is arranged on the upper limit plate 3, and the painting die 9 can abut against the blocking part 8.

[0034] Through the setting of the blocking part 8, compared with the direct contact between the painting die 8 and the upper limit plate 3 in the prior art, the contact area between the painting die 9 and the blocking part 8 will be significantly reduced, and the painting die 8 will float up and down under the buoyancy of the insulating paint, so as to reduce the friction force received by the painting die 9, and further enable the painting die 9 to slide freely and keep concentric with the enameled wire, so that the eccentricity of the enameled wire is stabilized below 1.5.

[0035] Furthermore, as Figure 1 and Figure 3 shown, the blocking part 8 includes a connecting piece 801 and a U-shaped limiting piece 802 made of stainless steel. The limiting piece 802 is clamped on the upper limit plate 3, and both the upper and lower sides of the limiting piece 802 are parallel to the surface of the upper limit plate 3. The connecting piece 801 is arranged between the two limiting pieces 802 for connecting the limiting pieces 802.

[0036] The U-shaped limiting member 802 includes a mounting plate 8021, an upper limiting rod 8022, and a lower limiting rod 8023. The upper limiting rod 8022 and the lower limiting rod 8023 sandwich the upper limiting plate 3 therebetween, and the side walls of the upper limiting rod 8022 and the lower limiting rod 8023 always abut against the surface of the upper limiting plate 3 and remain horizontal. One ends of both the upper limiting rod 8022 and the lower limiting rod 8023 are fixedly installed on the mounting plate 8021, and the other ends of both the upper limiting rod 8022 and the lower limiting rod 8023 abut against the painting rack 1. At the same time, the side wall of the mounting plate 8021 abuts against the upper limiting plate 3. The connecting member 801 is arranged between the two mounting plates 8021 for connecting the mounting plates 8021, and the connecting member 801 abuts against the side wall of the upper limiting plate 3 to maintain the stability of the connection between the blocking portion 8 and the upper limiting plate 3.

[0037] The upper limiting rod 8022 and the lower limiting rod 8023 can be selected to have a rectangular, circular, triangular, or other cross-section. To minimize the contact area between the lower limiting rod 8023 and the painting die 9 and reduce wear, the cross-section of the lower limiting rod 8023 is preferably circular here; to ensure that the blocking portion 8 is stably clamped on the upper limiting plate 3 as much as possible, the cross-sectional area of the upper limiting rod 8022 is preferably rectangular here. Each painting die 9 is matched with a blocking portion 8. Specifically, each painting die 9 abuts against two limiting rods with a circular cross-section at the same time. When the insulating paint drives the painting die 9 to move upward and abut against the limiting rods, it can ensure that the painting die 9 always remains horizontal. The contact between the painting die 9 and the limiting rods is a line contact, which greatly reduces the friction force received by the painting die 9. During the painting process, when the painting die 9 is eccentric with the wire 7, the painting die 9 freely rotates under the action of the tension of the insulating paint and restores the concentric state with the wire 7, so that the eccentricity of the product is stably maintained below 1.5, ensuring the uniformity of the coating of the paint film and completing the painting of the wire 7.

[0038] The diameter of the cross-section of the lower limiting rod 8023 can be selected from 0.5 mm to 2 mm. When the diameter is too small, due to the wear between the painting die 9 and the lower limiting rod 8023, it will affect the service life of the blocking portion 8, and thus the blocking portion 8 will be frequently replaced, which will further affect the production efficiency; when the diameter is too large, it may increase the contact area between the lower limiting rod 8023 and the painting die 9, and thus increase the friction force received by the painting die 9. The diameter of the cross-section of the lower limiting rod 8023 is preferably 1 mm here.

[0039] Furthermore, as Figure 1 and Figure 4 shown, partitions 6 are fixedly installed on both sides of the painting rack 1.

[0040] In actual production, multiple enameled wires are produced simultaneously, and usually multiple painting racks 1 are used side by side. Through the arrangement of the partitions 6, it is possible to prevent the insulating paints of different colors and / or different materials from affecting each other.

Claims

1. A painting auxiliary tooling for a vertical enameling machine, characterized in that: It includes a painting rack (1), a painting die (9) and a blocking part (8). A horizontally arranged upper limit plate (3) and a lower limit plate (2) are fixedly installed on the painting rack (1). Through holes (4) are formed on both the upper limit plate (3) and the lower limit plate (2). The painting die (9) can move vertically between the upper limit plate (3) and the lower limit plate (2). The blocking part (8) is arranged on the upper limit plate (3), and the painting die (9) can abut against the blocking part (8).

2. The painting auxiliary tooling for a vertical enameling machine according to claim 1, wherein, The blocking part (8) includes a connecting piece (801) and a U-shaped limiting piece (802) made of stainless steel. The limiting piece (802) is clamped on the upper limit plate (3), and both the upper and lower sides of the limiting piece (802) are parallel to the surface of the upper limit plate (3). The connecting piece (801) is arranged between the two limiting pieces (802) for connecting the limiting pieces (802).

3. The painting auxiliary tooling for a vertical enameling machine according to claim 2, characterized in that, The connecting piece (801) abuts against the side wall of the upper limit plate (3), and the end of the limiting piece (802) abuts against the side wall of the painting rack (1).

4. A painting auxiliary tooling for a vertical enameling machine according to any one of claims 1 to 3, characterized in that, Openings (5) communicating with the through holes (4) are formed on both the upper limit plate (3) and the lower limit plate (2).

5. An auxiliary painting tool for a vertical enameling machine according to any one of claims 1 to 3, characterized in that, Partition plates (6) are fixedly installed on both sides of the painting rack (1).

6. The painting auxiliary tooling for a vertical enameling machine according to claim 4, characterized in that, Partition plates (6) are fixedly installed on both sides of the painting rack (1).

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