A floating self-centering painting die and painting device

Abstract

The application discloses a floating self-centering paint coating mold and a paint coating device. The mold comprises a mold frame and a mold. The mold frame comprises an upper mold plate and a lower mold plate arranged in an upper-lower interval. The upper and lower mold plates are provided with wire passing portions for wire passing. The mold is provided with a mold core. The mold core is provided with a mold hole. A plain bearing is embedded in the top of the mold. The center hole of the plain bearing is larger than the inner diameter of the mold hole. The wire passes through the lower mold plate, the mold core and the upper mold plate in sequence after being painted. During the movement of the wire, the mold is self-centered and floatingly movable between the upper mold plate and the lower mold plate. When the plain bearing on the top of the mold is in contact with the upper mold plate, the mold is flexibly movable relative to the upper mold plate. The mold position is not fixed. During the wire conveying, the mold is self-centered and floatingly movable between the upper mold plate and the lower mold plate. The plain bearing on the top of the mold can make the mold more flexible when the mold is in contact with the upper mold plate, so that the paint film of the wire after being guided out of the mold core is more uniform. The paint coating mold and the paint coating device are suitable for the paint coating of round wires and flat wires.

Description

Technical Field

[0001] This invention relates to enameled wire manufacturing equipment, and more specifically to a floating self-centering coating mold and coating device. Background Technology

[0002] Enameled wire consists of an inner conductor and a coating that surrounds the conductor. In the production process of enameled wire, the traditional coating method often uses the felt coating method. However, this method is prone to variations in the amount of coating, making it difficult to control the quality of the finished product and easily leading to quality problems. In recent years, my country has imported many advanced enameled wire production equipment from abroad, many of which employ a mold coating method. This mold coating method is increasingly being accepted by the Chinese enameled wire industry. The mold coating method offers the advantages of stable, controllable, and reliable coating quality.

[0003] A mold-based painting device generally includes a paint tank, a mold, and a mold frame. This mold-based painting method is suitable for painting round lines. The specific structure of the device is as follows: the cross-section of the paint tank is generally a right-angled triangle or a right-angled trapezoid. One right-angled side of the right-angled triangle or the long side of the right-angled trapezoid is located on a horizontal plane, while the other right-angled side of the right-angled triangle or the right-angled trapezoid is perpendicular to the ground for fixing the device. The hypotenuse of the right-angled triangle or the right-angled trapezoid is made into a grate-like shape, that is, a groove is opened in each line interval. The line passes through the groove of the grate, the paint is applied to the surface of the line, and the excess paint on the surface of the line is scraped off by the mold.

[0004] Existing mold-based coating devices use molds fixed to a mold frame. Testing has revealed that the uniformity of the paint film needs improvement. Various factors contribute to uneven paint film, such as slight deviations in wire diameter and slight positioning errors during multiple rotations and guidance. These errors are unavoidable, meaning the wire may not be centered within the mold. Furthermore, the unevenness of the paint applied to the wire surface further affects the uniformity of the paint film on the finished enameled wire. While this mold-based coating device is acceptable for round wires, it is unsuitable for flat wires. Flat wires (i.e., those with a rectangular cross-section, where the corners may have rounded edges) are easily stretched and compressed during continuous feeding within the mold (especially at deformed corners). It is difficult to maintain constant alignment between the flat wire's center and the fixed mold, resulting in severely uneven paint film on the wire surface. Due to the rapid development of new energy sources, the demand for flat wires is rapidly increasing, making the uniformity of surface coating a pressing issue. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a floating, self-centering coating mold and coating device. The mold position is not fixed but suspended. During the line movement, the mold can self-center according to the line's own characteristics, including the amount of paint on its surface. It floats between the upper and lower templates. The planar bearing at the top of the mold allows for more flexible mold movement when in contact with the upper template, resulting in a more uniform paint film after the line is drawn from the mold core. This coating mold and coating device are suitable for coating round and flat lines.

[0006] According to one aspect of the present invention, a floating self-centering painting mold is provided, comprising a mold frame and a mold. The mold frame includes an upper mold plate and a lower mold plate arranged at vertical intervals. Both the upper and lower mold plates are provided with a thread guide for the thread to pass through. The mold core is provided at the center of the mold, and the mold core is provided with a through-hole. A planar bearing is embedded at the top of the mold. The central hole of the planar bearing is larger than the inner diameter of the mold hole. The painted thread passes through the lower mold plate, the mold core, and the upper mold plate in sequence, and the thread continues to move. During the movement of the thread, the mold is self-centering and floats between the upper and lower mold plates. When the floating planar bearing contacts the upper mold plate, the mold moves flexibly relative to the upper mold plate.

[0007] In some implementations, the upper surface of the planar bearing protrudes beyond the top of the mold.

[0008] In some embodiments, the mold has a stepped hole, the mold core is embedded in the stepped hole of the mold, the lower part of the mold has a tapered opening, and the upper part of the tapered opening extends to the bottom of the mold core.

[0009] In some embodiments, the thread guide portion has an opening.

[0010] In some embodiments, the cross-section of the die hole is rectangular for painting flat lines, or the cross-section of the die hole is circular for painting round lines.

[0011] According to another aspect of the present invention, a painting apparatus is also provided, comprising a longitudinally arranged paint tank, wherein a plurality of paint chambers are formed within the paint tank by a plurality of partitions, each paint chamber is provided with a wire divider assembly arranged outward from bottom to top, the wire divider assembly is provided with a wire-passing hole for wires to pass through, each paint chamber is provided with an independent paint hopper, the paint hopper is provided with a paint coating groove, and the above-mentioned floating self-centering painting mold is provided above the paint coating groove, wherein the wire-passing hole, the paint coating groove, the wire-passing part of the lower template, the mold, and the wire-passing part of the upper template are arranged from bottom to top.

[0012] In some embodiments, the splitter assembly includes an upper splitter, a lower splitter, a baffle, and a pressure plate. The baffle is fixed to the lower part of the pressure plate and forms a slot on the upper part for the lower splitter and the upper splitter to be inserted. A wire passage hole is formed at the joint between the upper splitter and the lower splitter, which allows flat or round wires to pass through.

[0013] The paint hopper is rotatably connected to the paint chamber. Each paint hopper has a support rod at its upper end, and a rotatable rod connecting block is connected to the support rod. A lever is provided at the upper end of the rod connecting block. A fixed seat is provided on the side of the paint cylinder away from the dividing plate assembly. The end of the lever is rotatably connected to the fixed seat. The paint cylinder has a support plate, and the top of the support plate has a snap-fit ​​groove. The lever has multiple snap-fit ​​parts that can cooperate with the snap-fit ​​groove. The upper template and the lower template are connected through a side plate, and the side plate is fixed to the support plate.

[0014] In some embodiments, each paint chamber is equipped with an independent floating self-centering paint mold, which includes a mold frame and can be configured with multiple molds, the number of molds corresponding to the number of lead-through sections.

[0015] According to another aspect of the present invention, a painting apparatus is also provided, comprising a longitudinally arranged paint cylinder, wherein a plurality of paint chambers are formed within the paint cylinder by a plurality of partitions, an outer side wall of the paint cylinder is inclined outward from bottom to top and provided with a wire-passing hole for wire to pass through, a support frame is provided above the paint cylinder, and the support frame is connected to the aforementioned floating self-centering painting mold, wherein the wire-passing hole, the wire-passing part of the lower template, the mold, and the wire-passing part of the upper template are arranged from bottom to top.

[0016] In some embodiments, a paint cylinder fixing block is provided on the side of the paint cylinder away from the wire hole, and a fixing plate is provided on the paint cylinder fixing block. The upper template of the floating self-centering paint coating mold is installed on the fixing plate, and the lower template is installed on the tray frame.

[0017] In some implementations, the upper template is an integral structure, while the lower template is a separate structure. The total number of guide lines on the upper template and the lower template is the same, and each paint chamber is equipped with an overflow pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention provides a floating self-centering coating mold. This mold structure represents a novel concept; the mold position is not fixed but suspended, with its movement space between the upper and lower mold plates. Unlike existing fixed coating molds, this floating self-centering coating mold is suitable for the production of flat and round wires. Enamelled wire undergoes many coating processes. In this mold-based coating method, each coating process involves passing through the mold. The wire to be coated is continuously fed through the mold holes of the arranged mold cores. Before entering the mold, the wire surface is coated with paint, and excess paint is scraped off after passing through the mold. As the wire continues to be fed, the mold adjusts its centering according to factors such as the amount of paint on the wire surface, the direction of wire movement (especially the constantly changing angle of flat wire during transport), and the wire tension. The mold can float up and down between the upper and lower mold plates, and its position is not fixed. When the mold floats to contact the upper mold plate, the planar bearing at the top of the mold allows for more flexible movement, and the continuously fed wire automatically centers, resulting in a more uniform paint film after the wire exits the mold core.

[0020] This floating, self-centering paint coating mold can be applied to modular paint coating devices. The main body of the paint coating device is modular, divided into the required number of paint chambers by several partitions. Each paint chamber has an independent paint hopper. The number of paint chambers, paint hoppers, and molds can be appropriately increased or decreased according to the number of paint coats required for different types of lines. The paint hopper has a rotatable structure. As needed for production or equipment debugging, the paint trough can be moved away from the line when the paint hopper is rotated to achieve rapid paint cut-off. The paint hopper has a small capacity, which avoids waste during debugging.

[0021] This floating, self-centering paint mold can also be applied to the paint coating device for comb paint cylinders. The paint coating device is equipped with multiple paint chambers. During the debugging process, the prepared paint can be added in stages. After the paint coating of the previous paint chamber is successfully debugged, the paint for the next paint chamber is added, avoiding waste during debugging. The upper and lower templates of the mold frame configured in this paint coating device are separate structures. The upper and lower templates are raised by the support frame to increase the space for the mold to float up and down, making the paint film more uniform. Each paint chamber is equipped with an overflow pipe at the bottom for timely paint recovery. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of one embodiment of a floating self-centering painting mold according to the present invention;

[0023] Figure 2 This is a schematic diagram of the mold structure;

[0024] Figure 2 -1 is a top view of the mold;

[0025] Figure 3This is a three-dimensional structural schematic diagram of one embodiment of a painting device according to the present invention;

[0026] Figure 4 yes Figure 3 Side view;

[0027] Figure 5 yes Figure 3 The main view;

[0028] Figure 6 This is a three-dimensional structural schematic diagram of another embodiment of a painting device of the present invention;

[0029] Figure 7 yes Figure 6 Side view of;

[0030] Figure 8 yes Figure 6 Top view. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent structural modifications or substitutions made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figure 1 and 2As shown, a floating self-centering coating mold according to an embodiment of the present invention includes a mold frame and a mold 2. The mold frame includes an upper mold plate 11 and a lower mold plate 12 arranged at vertical intervals. Both the upper mold plate 11 and the lower mold plate 12 have a thread guide portion 13 on the same side for thread to pass through. The thread guide portions 13 of the upper mold plate 11 and the lower mold plate 12 are aligned vertically. A mold core 21 is installed at the center of the mold 2. The mold core 21 has a through-hole 211, which allows the coated thread to pass through and allows excess paint on the thread surface to be scraped off. A planar bearing 22 is embedded in the top of the mold 2. The central hole of the planar bearing 22 needs to be slightly larger than the inner diameter of the mold hole 211. After being painted, the thread passes sequentially through the thread guide 13 of the lower template 12, the mold hole 211 of the mold core 21, and the thread guide 13 of the upper template 11, and the thread continues to move. During the movement of the thread, the mold 2 is self-centered and floats between the upper template 11 and the lower template 12. When the floating plane bearing 22 of the mold 2 contacts the upper template 11, the mold 2 moves flexibly relative to the upper template 11. The mold 2 has a stepped hole 210 inside, and the upper part of the mold core 21 has a stepped hanging ear 212. The mold core 21 is embedded in the stepped hole 210 of the mold 2, and the hanging ear 212 can be hung on the stepped hole 210 inside the mold 2. After the mold core 21 is installed, a space is formed above the mold core 21 inside the mold 2 for the installation of the plane bearing 22. After the plane bearing 22 is installed, the upper surface of the plane bearing 22 protrudes from the top of the mold 2. A tapered opening 23 is provided at the bottom of the mold 2, and the upper part of the tapered opening 23 extends to the bottom of the mold core 21.

[0034] If the flat wire is to be painted, the cross-section of the die hole 211 is a rectangular structure (e.g., Figure 2 As shown in Figure 1, the main body is rectangular with rounded corners at both ends. If the ends of the flat line are arc-shaped, then the ends of the rectangle should be correspondingly arc-shaped. If the line is to be painted, the cross-section of the mold hole 211 is circular. The mold core 21 can be cylindrical. The mold 2 can be cylindrical with the same diameter at the top and bottom. The upper part of the mold 2, where the planar bearing 22 is mounted, can also be a stepped cylindrical structure.

[0035] The thread section 13 has an opening 131 ( Figure 3 (As shown), this facilitates quick threading before operation. The width of the opening 131 is smaller than the outer dimensions of the mold 2 to ensure that the mold 2 does not pass through the thread-passing part 13 and its opening 131 when it floats up and down.

[0036] This floating, self-centering painting mold features a novel design concept. The mold 2 is not fixed in position but rather suspended, with its movement space located between the upper template 11 and the lower template 12. This suspended mold 2 is suitable for painting both flat and round wires, offering advantages that fixed mold 2 structures cannot match. Especially for flat wires, the paint film produced using this mold 2 is exceptionally uniform and scratch-free.

[0037] Enameled wire undergoes many coating processes, resulting in a varnish film on the wire surface. In the mold-based coating method, each coating process involves passing through a mold 2. The wire to be coated is continuously fed through the die holes 211 of the arranged die cores 21. Before entering the mold 2, the wire surface is coated with varnish. After passing through the mold 2, excess varnish is scraped off. As the wire continues to be fed, the mold 2 adjusts its centering based on factors such as the amount of varnish on the wire surface, the direction of the wire's movement (especially the constantly changing angle of the wire during flat wire feeding), and the wire's tension. The mold 2 can float up and down between the upper and lower die plates 11 and 12, and its position is not fixed. When the mold 2 floats to contact the upper die plate 11, the planar bearing 22 on the top of the mold 2 allows for more flexible movement. The continuously fed wire automatically centers itself, resulting in a more uniform varnish film after the wire exits the die core 21.

[0038] Example 2

[0039] like Figures 3 to 5 As shown, a painting apparatus according to one embodiment of the present invention includes a longitudinally arranged paint tank 3A. Multiple paint chambers 30A are formed within the paint tank 3A by several partitions 31A. Each paint chamber 30A is provided with a wire-separating plate assembly 4 arranged outwards from bottom to top. The wire-separating plate assembly 4 has a wire-passing hole 40A for the wire to pass through. Each paint chamber 30A is equipped with an independent paint hopper 5, and a painting groove 50 is formed on the paint hopper 50. Above the painting groove 50 is a floating self-centering painting mold as described in Embodiment 1. At the painting apparatus, the wire to be painted is vertically conveyed and rotates outside the painting apparatus. During production operation, the wire needs to be threaded according to a set route. At the painting apparatus, the wire passes sequentially from bottom to top through the wire-passing hole 40A, the painting groove 50, the wire-passing part 13 of the lower template 12, the mold hole 211 of the mold 2, and the wire-passing part 13 of the upper template 11, completing the rotating threading process according to the order of the molds 2. After the wire is threaded, the paint is put into the paint hopper 5. As the wire is conveyed, it first passes through the paint coating tank 50, where it is coated with paint. After entering the die hole 211, the die core 21 scrapes off the excess paint from the wire surface, making the paint film on the wire surface uniform. Through layer-by-layer coating, the enameled wire reaches the required paint film requirements.

[0040] The wire guide assembly 4 includes an upper wire guide 41, a lower wire guide 42, a baffle 43, and a pressure plate 44. The baffle 43 and pressure plate 44 are fixed to the partition 31A or the paint tank 3A. The lower parts of the baffle 43 and pressure plate 44 are fixed, and the upper parts form slots. The lower wire guide 42 and upper wire guide 41 can be sequentially inserted into the slots between the baffle 43 and pressure plate 44. A wire through hole 40A is formed at the joint between the upper wire guide 41 and lower wire guide 42, allowing flat or round wires to pass through. The number of wire through holes 40A formed by the upper wire guide 41 and lower wire guide 42 is the same as the number of molds 2 in the paint chamber 30A.

[0041] The paint container 5, viewed from the side, is a triangular shape with an open top. It has one long side 51 and one short side 52, with both ends closed. A paint trough 50 is formed on the short side 52. The paint trough 50 is a U-shaped groove, and the number of paint troughs 50 on each paint container 5 corresponds to the number of molds 2 and wire holes 40A in the paint chamber 30A. The paint container 5 is rotatably connected to the paint chamber 30A. Specifically, at the upper middle position of the long side 51 of the paint container 5, a positioning pin 53 rotatably hinges the paint container 5 to the paint chamber 30A. A support rod 54 is installed at the upper end of the long side 51 of the paint container 5. A groove 551 is formed on the rod connecting block 55, allowing the rod connecting block 55 to rotatably engage with the support rod 54. A lever 56 is installed on the upper end of the rod connecting block 55. The connection between the lever 56 and the rod connecting block 55 can be threaded, allowing for fine adjustment of the lever 56's position relative to the rod connecting block 55. A fixed seat 6 is connected to the rear side of the paint cylinder 3A, i.e., the side away from the dividing plate assembly 4. A positioning block 57 is connected to the end of the lever 56. The positioning block 57 is rotatably mounted on a fixed block 58, which is mounted on the fixed seat 6. Thus, pulling the lever 56 back and forth causes it to rotate relative to the fixed seat 6, thereby rotating the paint hopper 5. A support plate 59 is installed on the paint cylinder 3A. The top of the support plate 59 has snap-fit ​​grooves 591, the number of which is the same as the lever 56. The lever 56 is provided with multiple engaging parts 561 that can mate with the engaging slots 591. In this embodiment, each lever 56 may have three engaging parts 561. During normal painting, the position of the lever 56 does not need to be moved, and the middle engaging part 561 of the lever 56 can be engaged in the engaging slot 591. If paint supply is not needed after quick paint cut-off, the rear engaging part 561 of the lever 56 can be engaged in the engaging slot 591, and the paint hopper 5 rotates backward, moving the paint trough 50 away from the line. When it is necessary to tilt the paint trough 50 of the paint hopper 5 to a steeper position, the front engaging part 561 of the lever 56 is engaged in the engaging slot 591 during normal painting. Alternatively, only two engaging parts 561 may be provided, thus providing only two modes: normal painting and paint cut-off.

[0042] In this embodiment, the upper template 11 and the lower template 12 are connected by the side plate 10, that is, the entire mold frame adopts an integrated structure. By fixing the side plate 10 to the support plate 59, the mold frame can be fixed.

[0043] Each paint chamber 30A is equipped with an independent floating self-centering paint mold. The floating self-centering paint mold includes a mold frame and can be equipped with multiple molds 2. The number of molds 2 corresponds to the number of the line guide section 13.

[0044] The main body of the painting device provided in this embodiment is a modular type, which is divided into the required number of paint chambers 30A by several partitions 31A. Each paint chamber 30A has an independent paint hopper 5. The number of paint chambers 30A, paint hoppers 5 and molds 2 can be appropriately increased or decreased according to the number of paint coats required for different types of lines. The paint hopper 5 has a rotatable structure. According to the needs of production or equipment debugging, the paint tank 50 can be moved away from the line when the paint hopper 5 is rotated to achieve rapid paint cut-off. The paint hopper 5 has a small capacity, which can avoid waste during debugging.

[0045] Example 3

[0046] like Figures 6 to 8 As shown, a painting apparatus according to one embodiment of the present invention includes a longitudinally arranged paint tank 3B. Multiple paint chambers 30B are formed within the paint tank 3B by several partitions 31B. The paint chambers 30B are used to hold paint liquid. One outer wall of the paint tank 3B slopes outward from bottom to top and is provided with a wire-passing hole 40B for the wire to pass through. A support frame 8 is installed above the paint tank 3B, and the support frame 8 is connected to a floating self-centering painting mold as described in Embodiment 1. The wire-passing hole 40B, the wire-passing portion 13 of the lower template 12, the mold 2, and the wire-passing portion 13 of the upper template 11 are arranged from bottom to top. The total number of wire-passing portions 13 of the upper template 11 is the same as that of the lower template 12. At the painting apparatus, the wire to be painted is conveyed vertically, but rotates outside the painting apparatus. During production, the wire must first be threaded according to a pre-set route. At the coating device, the wire passes through the wire guide hole 40B, the wire guide section 13 of the lower template 12, the die hole 211 of the mold 2, and the wire guide section 13 of the upper template 11 from bottom to top, completing the rotating threading in the order arranged by the molds 2. After threading, the paint is poured into the paint chamber 30B. As the wire is conveyed, it first passes through the wire guide hole 40B, where it is coated with paint. After entering the die hole 211, the die core 21 scrapes off the excess paint from the wire surface, making the paint film on the wire surface uniform. Through layer-by-layer coating, the enameled wire achieves the required paint film.

[0047] A paint cylinder fixing block 7 is installed on the side of the paint cylinder 3B away from the wire hole 40B. The paint cylinder fixing block 7 is used to connect the entire painting device with other equipment. The specific structure of the paint cylinder fixing block 7 can be designed according to actual needs. A fixing plate 71 is installed on the paint cylinder fixing block 7, and the floating self-centering painting mold is installed on the fixing plate 71. In this embodiment, the upper template 11 and the lower template 12 of the floating self-centering painting mold are separate, that is, the mold frame is set up separately. The upper template 11 is an integral structure and is installed on the fixing plate 71 by screws. The lower template 12 is a split structure, which is divided into multiple plates and is installed on the support frame 8. Specifically, the top of the pallet frame 8 is connected to the upper template 11 via a bracket 81. The side wall of the pallet frame 8 has a slot 82, and each lower template 12 is inserted into the slot 82. The height of each lower template 12 is the same, and each lower template 12 can be connected and fixed together by a plate 91. Some pallet frames 8 can also be fixed above the partition 31B of the paint chamber 30B by a mounting plate 92, which serves to stabilize the lower template 12.

[0048] Each paint chamber 30B is equipped with an overflow pipe 93 for easy collection of paint liquid.

[0049] This embodiment pertains to a painting device for a comb-shaped paint cylinder. This device features multiple paint chambers 30B. During the commissioning process, the prepared paint can be added in stages. Once the previous pass in paint chamber 30B has passed the commissioning test, the next pass in paint chamber 30B is added, avoiding waste during commissioning. The upper and lower mold plates 11 and 12 of the mold frame in this painting device are separate structures. The upper and lower mold plates 11 and 12 are elevated via a support frame 8, increasing the vertical movement space of the mold 2 and resulting in a more uniform paint film. Each paint chamber 30B has an overflow pipe 93 at its bottom for timely paint recovery.

[0050] The floating automatic centering coating mold provided in this application can be applied to coating devices of assembled or comb-type paint cylinders, and is especially suitable for coating flat wires. The mold frame structure of the coating mold can be diversified to accommodate the installation of different coating devices, as long as it has separate upper and lower templates (11, 12) housings with wire passage sections 13. However, the position of the matching mold 2 is not fixed, but can float and move between the upper template 11 and the lower template 12. The top of the mold 2 has a flat bearing 22. In this way, as the wire is continuously fed, the mold 2 will change according to factors such as the amount of paint on the wire surface, the direction of wire movement, especially the constantly changing angle direction of the wire during flat wire feeding, and the wire feeding tension, so that the mold 2 can self-center. Because the top of the mold 2 has a flat bearing 22, when the mold 2 floats to contact the upper template 11, the movement of the mold 2 can be more flexible, and the wire will automatically center as it is continuously fed, so that the paint film after the wire is discharged from the mold core 21 is more uniform, and the enameled wire after multiple coatings by the mold 2 meets the production standards.

[0051] The above descriptions are merely some embodiments of the present invention. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A floating self-centering paint coating die comprising a die frame and a die, characterized by, The mold frame comprises an upper mold plate and a lower mold plate arranged in an up-down interval, the upper mold plate and the lower mold plate are provided with a wire passing part for wire passing, the center of the mold is provided with a mold core, the mold is provided with a stepped hole, the upper part of the mold core has a stepped lug, the mold core is embedded in the stepped hole of the mold, the lug is hung on the step in the mold, the mold core is provided with a mold hole penetrating up and down, the cross section of the mold hole is rectangular for flat wire painting or the cross section of the mold hole is circular for round wire painting, the top of the mold is embedded with a plane bearing, the upper surface of the plane bearing protrudes from the top of the mold, and the center hole of the plane bearing is larger than the inner diameter of the mold hole; The painted wire passes through the lower mold plate, the mold core and the upper mold plate in sequence and continuously moves, the mold is self-centered and floats between the upper mold plate and the lower mold plate during the movement of the wire, the mold moves flexibly relative to the upper mold plate when the floating plane bearing of the mold contacts the upper mold plate, and the position of the mold is not fixed in front, back, left and right.

2. The floating self-centering paint booth die of claim 1, wherein, The lower part of the mold is provided with a tapered mouth, and the upper part of the tapered mouth extends to the bottom of the mold core.

3. The floating self-centering paint booth die of claim 1, wherein, The wire passing part is formed with an opening.

4. A painting device comprising a longitudinally arranged paint tank, a plurality of paint chambers being formed by a plurality of partitions in the paint tank, characterized in that, Each paint chamber is provided with a wire distribution plate assembly arranged outwardly from bottom to top, the wire distribution plate assembly is provided with a wire passing hole for wire passing, each paint chamber is provided with an independent paint bucket, the paint bucket is provided with a painting groove, the upper part of the painting groove is provided with the floating self-centering painting mold of any one of claims 1 to 3, and the wire passing hole, the painting groove, the wire passing part of the lower mold plate, the mold and the wire passing part of the upper mold plate are arranged from bottom to top.

5. The painting device according to claim 4, characterized in that The wire distribution plate assembly comprises an upper wire distribution plate, a lower wire distribution plate, a baffle and a pressing plate, the baffle and the pressing plate are fixed at the lower part and form an insertion slot for the lower wire distribution plate and the upper wire distribution plate at the upper part, the joint of the upper wire distribution plate and the lower wire distribution plate forms a wire passing hole for flat wire or round wire passing; The paint bucket is rotatably connected to the paint chamber, the upper end of each paint bucket is provided with a support rod, the support rod is connected with a rotatable rod connecting block, the upper end of the rod connecting block is provided with a lever, the side of the paint cylinder away from the wire distribution plate assembly is provided with a fixing seat, the end of the lever is rotatably connected to the fixing seat, the paint cylinder is provided with a support plate, the top of the support plate is provided with a clamping groove, the lever is provided with a plurality of clamping parts matched with the clamping groove, the upper mold plate and the lower mold plate are connected through a side plate, and the side plate is fixed to the support plate.

6. The painting device according to claim 5, characterized in that Each paint chamber is provided with an independent floating self-centering painting mold, the floating self-centering painting mold comprises a mold frame and is provided with a plurality of molds, and the number of the molds corresponds to the number of the wire passing parts.

7. A painting device comprising a longitudinally arranged paint tank, a plurality of paint chambers being formed by a plurality of partitions in the paint tank, characterized in that, An outer side wall of the paint cylinder is outwardly inclined from bottom to top and is provided with a wire passing hole, the upper part of the paint cylinder is provided with a supporting plate frame, the supporting plate frame is connected with the floating self-centering painting mold of any one of claims 1 to 3, and the wire passing hole, the wire passing part of the lower mold plate, the mold and the wire passing part of the upper mold plate are arranged from bottom to top.

8. The painting device according to claim 7, characterized in that The paint bucket is provided with a paint bucket fixing block on the side far from the through hole, the fixing block is provided with a fixing plate, the upper die plate of the floating self-centering paint coating die is installed on the fixing plate, and the lower die plate is installed on the die plate holder.

9. The painting device according to claim 8, characterized in that The upper die plate is of integral structure, the lower die plate is of split structure, the total number of the through line parts of the upper die plate and the lower die plate is the same, and each paint chamber is provided with a paint overflow pipe.

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