An enameled wire production coating apparatus and process

By setting up a cleaning room and a coating room in the enameled wire production equipment, and using a motor and electric push rod to drive the coating cylinder to rotate, the problems of uneven coating and the influence of impurities are solved, achieving uniform coating and efficient cleaning.

CN118737583BActive Publication Date: 2026-02-10湖南聚石科技有限公司
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Patent Information

Application Number
CN202411085143.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-08
Publication Date
2026-02-10
Estimated Expiration
2044-08-08

AI Technical Summary

Technical Problem

In existing enameled wire coating equipment, the coating groove is arc-shaped, which cannot cover the entire outer surface of the wire, resulting in uneven coating and impurities on the wire surface affecting the coating effect.

Method used

The container is divided into a cleaning room, a first coating room, and a second coating room by a partition. The coating cylinder is driven to rotate by a motor and an electric push rod. Impurities are cleaned by a sponge block, and the coating liquid is evenly applied by a coating brush and a cam mechanism.

Benefits of technology

It achieves uniform coating and cleaning of the line surface, improves coating effect and efficiency, and simplifies the operation process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application belongs to the technical field of enameled wire processing, and particularly relates to an enameled wire production coating device. The existing coating device coats the wire body by using a lubricating coating roller. Since the coating groove is arc-shaped, the wire body cannot be wrapped on the entire outer surface, so that the upper part of the wire body becomes a coating dead angle, coating cannot be performed, coating is uneven, and the wire body has impurities on the front surface before coating, which affects the coating effect if cleaning is not performed. The present application proposes the following scheme. The inside of a containing box is fixedly provided with two partitions, which divide the containing box into a cleaning interval for cleaning and coating of the wire body, a first coating interval, and a second coating interval. In the present application, the electric push rod and the motor are started to immerse the wire body in the liquid, and the coating brush in the coating cylinder is used to apply the liquid. The coating effect and efficiency are improved, and the operation is simple and convenient.
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Description

Technical Field

[0001] This invention relates to the field of enameled wire processing technology, and in particular to an enameled wire production coating equipment and process. Background Technology

[0002] Enameled wire is a major type of winding wire, consisting of a conductor and an insulation layer. The bare wire is annealed and softened, and then undergoes multiple coating and baking processes. The coating process requires the use of coating equipment.

[0003] According to the invention disclosed in CN110223804A, a lubrication coating device for enameled wire is used. The device uses a second rotating motor to drive a pulley via a belt, which in turn drives a second rotating shaft and a lubrication coating roller to rotate. At this time, the lubrication coating roller comes into contact with lubricating oil, and the coating grooves on the surface are filled with lubricating oil. The enameled wire is coated by passing through the coating grooves, and then the excess lubricating oil is absorbed by the anti-drip absorbent felt to prevent excess lubricating oil from dripping.

[0004] The device also has the following disadvantages during use: When using it, the coating is applied to the line body by a lubricating coating roller. Since the coating groove is arc-shaped, it cannot cover the entire outer surface of the line body. This makes the area above the line body a coating dead zone, which cannot be coated, resulting in uneven coating. In addition, the surface of the line body has impurities before coating. If these impurities are not cleaned, the coating effect will be affected. Summary of the Invention

[0005] The purpose of this invention is to solve the shortcomings of the existing technology, which uses a lubricating coating roller to coat the wire body. Because the coating groove is arc-shaped, it cannot cover the entire outer surface of the wire body, thus creating a coating dead zone above the wire body, which cannot be coated, resulting in uneven coating. Furthermore, the wire body has impurities on its surface before coating, which affect the coating effect if not cleaned. Therefore, this invention proposes a coating equipment and process for enameled wire production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A coating equipment for producing enameled wire includes a holding box, the interior of which is fixedly provided with two partitions, dividing it into a cleaning room, a first coating room, and a second coating room for cleaning and coating the wire.

[0008] The top plate is raised and lowered on top of the container by a support member. Two sets of first extension plates are fixedly provided at the bottom of the top plate. Multiple coating cylinders for coating the line body are provided between each set of first extension plates. After being lowered, the two sets of first extension plates are located in the first coating chamber and the second coating chamber, respectively.

[0009] The second extension plate is fixedly installed at the bottom of the top plate. A sponge block for cleaning the line is inserted into the bottom of the second extension plate. Multiple second guide wheels for guiding the line are fixedly installed on both sides of the second extension plate.

[0010] Multiple sets of first guide wheels are fixedly mounted on the holding box, the partition and the first extension plate, respectively, for further guiding the line body;

[0011] An electric motor, mounted on the top plate, is used to drive the coating cylinder to rotate, thereby improving the coating effect;

[0012] An electric push rod is fixedly mounted on the top plate and used in conjunction with a support component to provide lifting power for the support component.

[0013] In one possible design, the support includes two sets of second fixing blocks fixedly disposed on both sides of the container, with a first guide rod slidably disposed through the top of the second fixing block, and a first fixing block fixedly disposed on the top of the first guide rod. The first fixing block is fixedly disposed on one side of the top plate to guide the lifting and lowering of the top plate.

[0014] In one possible design, a rotating rod is rotatably connected between the two first fixed blocks on the same side, and the outer walls of the two rotating rods are fitted with the same sliding frame. A third fixed block is fixed at each of the four bottom corners of the sliding frame, and a connecting rod is rotatably connected to the inner side of the third fixed block. The other end of the connecting rod is rotatably connected to the container, and the output end of the electric push rod is fixedly connected to the sliding frame.

[0015] In one possible design, the bottom of the second extension plate has an insertion hole into which an insert bar is inserted. A connecting plate is fixedly mounted on the bottom of the insert bar. The sponge block is fixedly mounted on the bottom of the connecting plate. The bottom of the sponge block has multiple grooves for positioning the line body.

[0016] In one possible design, a connecting frame is fixedly provided on the inner side of each set of the first extension plates, and multiple coating cylinders are rotatably disposed between two connecting frames. The coating cylinders are provided with coating brushes for coating the line body, and the bottom of the coating cylinders and the connecting frames are provided with through holes for the line body to pass through.

[0017] In one possible design, a sliding plate is slidably disposed between the two first extension plates, the bottom of the sliding plate being in contact with a plurality of coating brushes, and two rectangular holes are formed at the top of the top plate, within which a sliding strip is slidably disposed, the bottom of the sliding strip being fixedly connected to a corresponding sliding plate, a first connecting strip being fixedly disposed between the two sliding strips, and a second connecting strip being fixedly disposed on one side of the first connecting strip, the output end of the motor being fixedly connected to one of the rotating rods, and the second connecting strip cooperating with the rotating rod to provide rotational power for the coating cylinder.

[0018] In one possible design, a cam that abuts against the second connecting bar is fixedly sleeved on the outer wall of the rotating rod, a fourth fixing block is fixedly installed on the top of the top plate, a second guide rod is fixedly installed on one side of the fourth fixing block, the second guide rod is slidably connected to the first connecting bar, a spring is sleeved on the outer wall of the second guide rod, and the two ends of the spring are fixedly connected to the adjacent sides of the first connecting bar and the fourth fixing block, respectively.

[0019] A coating process for producing enameled wire includes the following steps:

[0020] S1. First, pass the line through the container and the top plate, then place it in the corresponding second guide wheel and first guide wheel, and start the electric push rod to move the top plate downward so that the line is immersed in the cleaning solution and coating solution.

[0021] S2. Then start the take-up and untake-out rollers to move the wire body. During the movement, the sponge blocks clean the impurities on the outer wall of the wire body.

[0022] S3. Next, the cleaned line is moved to the first coating room and the second coating room in sequence, and the motor is started to drive the coating cylinder to rotate, so that the coating liquid is evenly applied to the line.

[0023] S4. Finally, dry the product using an external dryer and then rewind it.

[0024] In this application, firstly, the liner is passed between the holding box and the top plate, and then placed in the corresponding second guide wheel, as well as the groove and the first guide wheel. At the same time, the liner is put into the coating cylinder through the through hole, and the electric push rod is activated to extend, which can drive the sliding frame to move on two rotating rods. During the movement, the connecting rod can be driven to rotate through the third fixed block. During the rotation of the connecting rod, the top plate can be moved downward, so that the liner is immersed in the cleaning liquid and the coating liquid.

[0025] Then, the take-up and untake-off rollers are started to move the yarn. During the movement, the yarn moves in the groove, and the sponge block can clean the impurities on the outer wall of the yarn, keeping its surface clean.

[0026] Next, the cleaned line is moved sequentially into the first coating chamber and the second coating chamber, and the motor is started to drive the rotating rod to rotate. The rotation of the rotating rod can drive the cam to rotate. When the convex part of the cam contacts the second connecting strip, it can drive the second connecting strip to move, and through the first connecting strip, it can drive the two sliding strips to move in the rectangular hole. During the movement, it can drive the sliding plate to move. The movement of the sliding plate can drive the coating cylinder to rotate through the friction between the sliding plate and the coating cylinder, and the coating liquid is evenly applied to the line by the coating brush. When the convex part of the cam moves away from the second connecting strip, the first connecting strip can be reset and moved under the action of the spring, which can drive the sliding plate to reset and move, and drive the coating cylinder to rotate in the opposite direction, and perform coating sequentially.

[0027] Finally, it is dried using an external dryer and then wound up.

[0028] Beneficial effects:

[0029] In this invention, the enameled wire production coating equipment can divide the holding box into a cleaning room, a first coating room and a second coating room through two partitions, so that the wire can be continuously cleaned and coated, thereby improving the coating effect.

[0030] In this invention, the enameled wire production coating equipment uses an electric push rod to move the top plate up and down, which allows the wire to be immersed in liquid, improving the cleaning and coating effect. After immersion, the wire takes a curved shape, and its inclined part guides excess coating.

[0031] In this invention, the enameled wire production coating equipment can drive the coating cylinder to rotate back and forth by starting the motor, so that it can repeatedly coat the surface of the wire, which can improve the coating effect and is easy to use;

[0032] In this invention, by activating the electric push rod and motor, the line can be immersed in the liquid, and the liquid can be applied by the coating brush inside the coating cylinder. This not only improves the coating effect but also increases the coating efficiency, and the operation is simple and convenient. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural schematic diagram of an enameled wire production coating equipment proposed in this invention;

[0034] Figure 2 This is a cross-sectional view of the holding box of the enameled wire production coating equipment proposed in this invention;

[0035] Figure 3 This is a schematic diagram of the top plate connection structure of an enameled wire production coating equipment proposed in this invention;

[0036] Figure 4 for Figure 3 Enlarged structural diagram of section A in the middle;

[0037] Figure 5 This is a schematic diagram of the coating cylinder connection structure of an enameled wire production coating equipment proposed in this invention;

[0038] Figure 6 This is a schematic diagram of the connection structure of the connecting frame of the enameled wire production coating equipment proposed in this invention;

[0039] Figure 7 for Figure 6 Enlarged schematic diagram of section A in the middle.

[0040] In the diagram: 1. Holding box; 2. First guide wheel; 3. Top plate; 4. Motor; 5. First extension plate; 6. Coating cylinder; 7. Second extension plate; 8. Second guide wheel; 9. Partition; 10. Cleaning room; 11. First coating room; 12. Second coating room; 13. First fixing block; 14. First guide rod; 15. Second fixing block; 16. Rotating rod; 17. Sliding frame; 18. Third fixing block; 19. Connecting rod; 20. Connecting frame; 21. Insertion hole; 22. Insert strip; 23. Connecting plate; 24. Sponge block; 25. Groove; 26. Coating brush; 27. Through hole; 28. Sliding plate; 29. ​​Electric push rod; 30. Rectangular hole; 31. Sliding strip; 32. First connecting strip; 33. Second connecting strip; 34. Cam; 35. Fourth fixing block; 36. Second guide rod; 37. Spring. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Example 1

[0043] Reference Figures 1-7 A coating equipment for producing enameled wire, which is used in the field of enameled wire processing, includes: a holding box 1, and two partitions 9 are fixedly provided inside the holding box 1, which divides it into a cleaning room 10, a first coating room 11 and a second coating room 12 for cleaning and coating the wire.

[0044] Top plate 3 is raised and lowered on top of container 1 by support members. Two sets of first extension plates 5 are fixed at the bottom of top plate 3. Multiple coating cylinders 6 for coating the line body are provided between each set of first extension plates 5. After lowering, the two sets of first extension plates 5 are located in the first coating chamber 11 and the second coating chamber 12 respectively.

[0045] The second extension plate 7 is fixedly installed at the bottom of the top plate 3. A sponge block 24 for cleaning the line is inserted into the bottom of the second extension plate 7. Multiple second guide wheels 8 for guiding the line are fixedly installed on both sides of the second extension plate 7.

[0046] Multiple sets of first guide wheels 2 are fixedly mounted on the holding box 1, the partition 9 and the first extension plate 5, respectively, for further guiding the line body;

[0047] Motor 4 is mounted on the top plate 3 and is used to drive the coating cylinder 6 to rotate, thereby improving the coating effect.

[0048] The electric push rod 29 is fixed on the top plate 3 and used in conjunction with the support to provide lifting power for the support. By placing the wire in the corresponding first guide wheel 2, second guide wheel 8 and coating cylinder 6, and starting the electric push rod 29 to move the top plate 3 downward, the wire can be immersed in the cleaning water and coating liquid. At the same time as the wire moves, the motor 4 is started to drive the coating cylinder 6 to rotate, which can evenly apply the coating liquid to the wire, making the operation simple and convenient for threading.

[0049] The support includes two sets of second fixing blocks 15 fixedly installed on both sides of the container 1. A first guide rod 14 is slidably installed through the top of the second fixing block 15. A first fixing block 13 is fixedly installed on the top of the first guide rod 14. The first fixing block 13 is fixedly installed on one side of the top plate 3 to guide the top plate 3 to move up and down. The first guide rod 14 and the second fixing block 15 guide the top plate 3 so that it will not deviate during the movement and can only move up and down.

[0050] A rotating rod 16 is rotatably mounted between two first fixed blocks 13 on the same side. The outer walls of the two rotating rods 16 are fitted with the same sliding frame 17. A third fixed block 18 is fixedly mounted at each of the four corners of the bottom of the sliding frame 17. A connecting rod 19 is rotatably mounted on the inner side of the third fixed block 18. The other end of the connecting rod 19 is rotatably connected to the container 1. The output end of the electric push rod 29 is fixedly connected to the sliding frame 17. By activating the electric push rod 29, the sliding frame 17 can be moved. The movement of the sliding frame 17 can drive the connecting rod 19 to rotate on the container 1 through the third fixed block 18. During the rotation, the top plate 3 can be guided by the first guide rod 14 and the second fixed block 15 to move downward.

[0051] The bottom of the second extension plate 7 has an insertion hole 21, into which an insertion strip 22 is inserted. A connecting plate 23 is fixedly installed at the bottom of the insertion strip 22. A sponge block 24 is fixedly installed at the bottom of the connecting plate 23. The bottom of the sponge block 24 has multiple grooves 25 for positioning the line. By setting the sponge block 24 on the connecting plate 23 and inserting the connecting plate 23 into the second extension plate 7 through the insertion strip 22, it is easy to replace. The grooves 25 at the bottom of the sponge block 24 enable it to position the line and ensure that the surface of the line can contact the sponge block 24, reducing cleaning dead corners.

[0052] Each first extension plate 5 is fixedly provided with a connecting frame 20 on its inner side. Multiple coating cylinders 6 are rotatably disposed between two connecting frames 20. The coating cylinder 6 is provided with a coating brush 26 for coating the line. The bottom of the coating cylinder 6 and the connecting frame 20 are provided with through holes 27 for the line to pass through. By rotating the coating cylinder 6 on the two connecting frames 20, it can support the coating cylinder 6, and the line can move into the coating cylinder 6 through the through holes 27 and be coated by the coating brush 26, which can improve the coating effect.

[0053] Example 2

[0054] refer to Figures 1-7 An improvement based on Embodiment 1 is made as follows: A sliding plate 28 is slidably disposed between two first extension plates 5. The bottom of the sliding plate 28 contacts multiple coating brushes 26. Two rectangular holes 30 are opened on the top of the top plate 3. A sliding strip 31 is slidably disposed in the rectangular holes 30. The bottom of the sliding strip 31 is fixedly connected to the corresponding sliding plate 28. A first connecting strip 32 is fixedly disposed between the two sliding strips 31. A second connecting strip 33 is fixedly disposed on one side of the first connecting strip 32. The output end of the motor 4 is fixedly connected to one of the rotating rods 16. The second connecting strip 33 works in conjunction with the rotating rod 16 to provide rotational power to the coating cylinder 6. By starting the motor 4, the rotating rod 16 can be driven to rotate. The rotation of the rotating rod 16 can drive the second connecting strip 33 to move, thereby driving the sliding plate 28 to move through the sliding strip 31. During the movement, the sliding plate 28 can drive the coating cylinder 6 to rotate through friction to perform the coating work.

[0055] A cam 34 is fixedly sleeved on the outer wall of the rotating rod 16, which abuts against the second connecting bar 33. A fourth fixing block 35 is fixedly installed on the top of the top plate 3. A second guide rod 36 is fixedly installed on one side of the fourth fixing block 35. The second guide rod 36 is slidably connected to the first connecting bar 32. A spring 37 is sleeved on the outer wall of the second guide rod 36. The two ends of the spring 37 are fixedly connected to the adjacent sides of the first connecting bar 32 and the fourth fixing block 35, respectively. The rotation of the rotating rod 16 can drive the cam 34 to rotate. When the convex part of the cam 34 contacts the second connecting bar 33, it will drive the second connecting bar 33 to move, and drive the sliding plate 28 to move. When the convex part of the cam 34 moves away from the second connecting bar 33, the first connecting bar 32 can be reset and moved under the force of the spring 37, so that it can be reset and moved by the sliding plate 28, which facilitates the reciprocating rotation of the coating cylinder 6.

[0056] A coating process for producing enameled wire includes the following steps:

[0057] S1. First, pass the line through the container 1 and the top plate 3, then place it in the corresponding second guide wheel 8 and first guide wheel 2, and start the electric push rod 29 to drive the top plate 3 downward so that the line is immersed in the cleaning liquid and coating liquid.

[0058] S2. Then start the take-up and untake-out rollers to move the wire body. During the movement, the sponge block 24 cleans the impurities on the outer wall of the wire body.

[0059] S3. Next, the cleaned line is moved sequentially into the first coating chamber 11 and the second coating chamber 12, and the motor 4 is started to drive the coating cylinder 6 to rotate, so that the coating liquid is evenly applied to the line.

[0060] S4. Finally, dry the product using an external dryer and then rewind it.

[0061] However, as is well known to those skilled in the art, the working principle and wiring method of motor 4 and electric push rod 29 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A coating equipment for enameled wire production, characterized in that, Includes a container (1), the container (1) is provided with two partitions (9) inside, which divide it into a cleaning room (10), a first coating room (11) and a second coating room (12) for cleaning and coating the line body; Top plate (3), the top plate (3) is raised and lowered on the top of the container (1) by a support member, and two sets of first extension plates (5) are fixedly provided at the bottom of the top plate (3). Each set of first extension plates (5) is provided with multiple coating cylinders (6) for coating the line body. After descending, the two sets of first extension plates (5) are located in the first coating room (11) and the second coating room (12) respectively. The second extension plate (7) is fixedly installed at the bottom of the top plate (3). A sponge block (24) for cleaning the line is inserted into the bottom of the second extension plate (7). Multiple second guide wheels (8) for guiding the line are fixedly installed on both sides of the second extension plate (7). Multiple sets of first guide wheels (2) are fixedly mounted on the holding box (1), the partition (9) and the first extension plate (5) respectively, for further guiding the line body; The motor (4) is mounted on the top plate (3) and is used to drive the coating cylinder (6) to rotate, thereby improving the coating effect; Electric push rod (29), which is fixed on the top plate (3) and used in conjunction with the support to provide lifting power for the support.

2. The enameled wire production coating equipment according to claim 1, characterized in that, The support includes two sets of second fixing blocks (15) fixed on both sides of the container (1). The top of the second fixing block (15) is slidably provided with a first guide rod (14). The top of the first guide rod (14) is fixedly provided with a first fixing block (13). The first fixing block (13) is fixedly provided on one side of the top plate (3) to guide the lifting and lowering of the top plate (3).

3. The enameled wire production coating equipment according to claim 2, characterized in that, A rotating rod (16) is rotatably provided between the two first fixed blocks (13) on the same side. The outer walls of the two rotating rods (16) are fitted with the same sliding frame (17). The four corners of the bottom of the sliding frame (17) are fixed with third fixed blocks (18). The inner side of the third fixed block (18) is rotatably provided with a connecting rod (19). The other end of the connecting rod (19) is rotatably connected to the container (1). The output end of the electric push rod (29) is fixedly connected to the sliding frame (17).

4. The enameled wire production coating equipment according to claim 3, characterized in that, The bottom of the second extension plate (7) is provided with an insertion hole (21), and an insertion strip (22) is inserted into the insertion hole (21). A connecting plate (23) is fixedly provided at the bottom of the insertion strip (22). The sponge block (24) is fixedly provided at the bottom of the connecting plate (23). The bottom of the sponge block (24) is provided with multiple grooves (25) for positioning the line body.

5. The enameled wire production coating equipment according to claim 4, characterized in that, Each of the first extension plates (5) is fixedly provided with a connecting frame (20) on its inner side. Multiple coating cylinders (6) are rotatably disposed between two connecting frames (20). The coating cylinder (6) is provided with a coating brush (26) for coating the line body. The bottom of the coating cylinder (6) and the connecting frame (20) are provided with through holes (27) for the line body to pass through.

6. The enameled wire production coating equipment according to claim 5, characterized in that, A sliding plate (28) is slidably provided between the two first extension plates (5). The bottom of the sliding plate (28) is in contact with multiple coating brushes (26). Two rectangular holes (30) are opened on the top of the top plate (3). A sliding strip (31) is slidably provided in the rectangular holes (30). The bottom of the sliding strip (31) is fixedly connected to the corresponding sliding plate (28). A first connecting strip (32) is fixedly provided between the two sliding strips (31). A second connecting strip (33) is fixedly provided on one side of the first connecting strip (32). The output end of the motor (4) is fixedly connected to one of the rotating rods (16). The second connecting strip (33) works in conjunction with the rotating rod (16) to provide rotational power for the coating cylinder (6).

7. The enameled wire production coating equipment according to claim 6, characterized in that, The outer wall of the rotating rod (16) is fixedly fitted with a cam (34) that abuts against the second connecting bar (33). The top of the top plate (3) is fixedly fitted with a fourth fixing block (35). A second guide rod (36) is fixedly fitted on one side of the fourth fixing block (35). The second guide rod (36) is slidably connected to the first connecting bar (32). A spring (37) is fitted on the outer wall of the second guide rod (36). The two ends of the spring (37) are fixedly connected to the first connecting bar (32) and the side of the fourth fixing block (35) that are close to each other.

8. A coating process using the enameled wire production coating equipment as described in claim 7, characterized in that, Includes the following steps: S1. First, pass the line through the container (1) and the top plate (3), then place it in the corresponding second guide wheel (8) and first guide wheel (2), and start the electric push rod (29) to drive the top plate (3) to move downward, so that the line is immersed in the cleaning liquid and coating liquid. S2. Then start the take-up and untake-down rollers to drive the wire body to move. During the movement, the sponge block (24) cleans the impurities on the outer wall of the wire body. S3. Next, the cleaned line body is moved to the first coating chamber (11) and the second coating chamber (12) in sequence, and the motor (4) is started to drive the coating cylinder (6) to rotate, so that the coating liquid is evenly applied to the line body. S4. Finally, dry the product using an external dryer and then rewind it.

Citation Information

Patent Citations

  • Enameled wire surface lubricating and coating device

    CN110223804A

  • Enameled wire production coating device and process

    CN117012466A

  • Reinforced coating mechanism for enameled wire processing

    CN211887602U