A process for coating insulating varnish on enameled wire

Abstract

The invention relates to the field of enameled wire production, and specifically to an insulating varnish coating process for enameled wire. The coating process uses a coating device, which includes a bracket, a wire unwinding machine, a wire take-up machine, a wire harness displacement mechanism, a spray unit and a drying unit, and also includes a uniform control component. The uniform control component includes a ring, a disc, a shrinking coating mechanism and a flat-contact heat-conducting mechanism. The disc is provided with a shrinking driving mechanism. The enameled wire passes through the spray unit, the shrinking coating mechanism, the flat-contact heat-conducting mechanism and the drying unit in sequence. The present application drives the shrinking coating mechanism to adjust to a position with a specified thickness of insulating varnish through a shrinking driving mechanism. As the enameled wire is wound up, excess insulating varnish on the enameled wire except for the specified thickness is scraped off, thereby ensuring that the thickness of the insulating varnish on the enameled wire is consistent, avoiding that the insulating varnish on the enameled wire affects the quality of the enameled wire due to different thicknesses, and improving the coating effect of the insulating varnish.

Description

Technical Field

[0001] The invention relates to the field of enameled wire production, and in particular to an insulating varnish coating process for enameled wires. Background Art

[0002] Enameled wire is a main type of winding wire. For enameled wire painting, it is a process of coating enameled wire paint on the metal conductor to form a uniform paint layer of a certain thickness. It directly affects the use effect of the enameled wire. Therefore, the process of enameled wire painting is very important. When painting the enameled wire, uneven painting will occur, which directly affects the quality of the enameled wire painting.

[0003] The currently disclosed Chinese patent CN201910118402.4 discloses an enameled wire efficient painting device, comprising an upwardly opening U-shaped bracket, a computer terminal and a controller; the controller is used to control the operation of the enameled wire efficient painting device; a motor is provided at the port above the opening end of the U-shaped bracket, and the bottom of the motor is fixedly connected to the U-shaped bracket; a pay-off machine is fixedly connected to the output end of the motor on the left side of the U-shaped bracket, and a take-up machine is fixedly connected to the output end of the motor on the right side of the U-shaped bracket, and a wire-receiving machine is connected between the pay-off machine and the take-up machine. A painting unit and a drying machine are provided, the drying machine is located on the right side of the painting unit, the painting unit is used to paint the enameled wire, and the painting unit includes a painting box and a paint box; the painting box is fixedly connected to the U-shaped bracket through a support seat, and wire holes are provided at both ends of the painting box, a support plate is provided at the bottom of the painting box, the support plate is fixedly connected to the side wall of the painting box, and nozzles are fixedly connected above the top of the painting box and above the support plate; the paint box is filled with insulating varnish, and an oil pump is provided in the paint box. The insulating varnish enters the nozzle through the oil pump; a fixed block is provided on the upper outer side of the paint box, a No. 1 magnetic block is provided on the left side of the fixed block, and the No. 1 magnetic block is connected to the fixed block through a No. 1 spring; a slide groove is provided on the top of the paint box, a sponge pad is provided in the middle of the interior of the paint box, a wire passing hole is provided in the sponge pad, the position of the wire passing hole on the sponge pad and the position of the wire passing hole on the paint box are in the same horizontal plane, and the wire passing hole on the sponge pad and the wire passing hole on the paint box are used to place enameled wire; the sponge pad and the No. 1 magnetic block are connected. The two guide wheels are connected by a sliding rod, a cavity is provided in the sliding rod, the cavity is connected to the oil pump by an oil pipe, the insulating varnish in the paint box enters the sponge pad through the oil pump, the oil pipe and the cavity, the sliding rod slides in the slide groove, and the sliding rod is connected to the side wall of the slide groove by a No. 2 spring, the No. 2 spring is a hollow structure, and the hollow structure of the No. 2 spring is filled with gas, the No. 1 spring and the No. 2 spring are used for resetting the No. 1 magnetic block; a No. 2 magnetic block is fixedly connected to the top of the pay-off machine, and the magnetism of the No. 2 magnetic block is opposite to that of the No. 1 magnetic block.

[0004] According to the above patent, the patent drives the pay-off machine and the take-up machine to rotate through a motor, so that the enameled wire can be painted during the rotation process, and the painting unit can make the thickness of the insulating varnish on the enameled wire evenly distributed when working. However, this method cannot accurately control the thickness of the insulating varnish. During the rotation process, the insulating varnish is prone to dripping, resulting in uneven thickness. Therefore, there is a need for a device that can scrape off excess insulating varnish around the enameled wire in a surrounding manner. Summary of the invention

[0005] In view of the problems existing in the prior art, an insulating paint coating device for enameled wire is provided. The present application drives a shrinking coating mechanism to adjust to a position with a specified thickness of insulating paint through a shrinking driving mechanism. As the enameled wire is wound, excess insulating paint on the enameled wire except for the specified thickness is scraped off, thereby ensuring that the thickness of the insulating paint on the enameled wire is consistent, avoiding the quality of the enameled wire being affected by the different thickness of the insulating paint on the enameled wire, and improving the coating effect of the insulating paint.

[0006] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0007] The present invention provides an insulating paint coating process for enameled wires. The coating process uses a coating device, which includes a bracket, a wire pay-off machine, a wire take-up machine, a wire harness displacement mechanism, a spray unit and a drying unit; the wire harness displacement mechanism is arranged on the bracket, and the wire harness displacement mechanism is located between the wire harness displacement mechanism and the wire take-up machine; the spray unit is arranged on the wire harness displacement mechanism, and the spray unit is located between the wire harness displacement mechanism and the wire take-up machine; the drying unit is arranged on the bracket, and the drying unit is located between the spray unit and the wire take-up machine; and the coating device also includes a uniform control component for maintaining a uniform thickness of the insulating paint on the enameled wire, and the uniform control component is used to control the uniform thickness of the insulating paint on the enameled wire. The component includes a ring, a disc, a shrinking and coating mechanism and a flat-contact heat-conducting mechanism; the ring is arranged on the spraying unit; the disc is arranged on the drying unit; the shrinking and coating mechanism is arranged between the ring and the disc and installed on the ring; the flat-contact heat-conducting mechanism is arranged between the shrinking and coating mechanism and the disc and installed on the disc, and the flat-contact heat-conducting mechanism and the shrinking and coating mechanism are cooperatively connected; a shrinking driving mechanism is provided on the disc for driving the shrinking and coating mechanism to scrape off excess insulating paint according to the thickness of the specified insulating paint; the enameled wire passes through the spraying unit, the shrinking and coating mechanism, the flat-contact heat-conducting mechanism and the drying unit in sequence.

[0008] The coating process includes the following steps:

[0009] S1, the enameled wire is paid out and paid out by the synchronous operation of the pay-off machine and the take-up machine;

[0010] S2, spraying the insulating paint on the enameled wire comprehensively through the spraying unit;

[0011] S3, driving the shrinking coating mechanism through the shrinking driving mechanism to scrape off the excess insulating paint beyond the specified thickness on the enameled wire;

[0012] S4, preliminarily drying the insulating varnish by cooperating between the flat heat conducting mechanism and the shrink wrapping mechanism so as to bring the mechanism close to the enameled wire;

[0013] S5, the insulating varnish on the enameled wire is further dried completely by the drying unit and is wound up by the wire take-up machine with the assistance of the wire harness displacement mechanism.

[0014] Preferably, the shrink wrapping mechanism includes a first fan-shaped block and a second fan-shaped block; there are three first fan-shaped blocks and three second fan-shaped blocks, the three first fan-shaped blocks are evenly distributed inside the circular ring along the circumferential direction of the circular ring, each second fan-shaped block is respectively arranged between two adjacent first fan-shaped blocks, each first fan-shaped block and each second fan-shaped block are cocentric with the circular ring, and the inner wall of each first fan-shaped block is provided with a sliding groove for connecting the corresponding second fan-shaped block.

[0015] Preferably, the flat heat-conducting mechanism comprises a strip block, a first heat-conducting plate, and a second heat-conducting plate; there are three strip blocks, one end of each strip block is fixedly connected to a first fan-shaped block, and the other end of each strip block extends along the axial direction of the ring toward the direction of the disk, and each strip block is provided with a heating cavity, the inner wall of each strip block is open, and each strip block is provided with a plurality of pipe openings connected with the heating cavity; there are three first heat-conducting plates and the second heat-conducting plates, both of which are arc-shaped structures, each first heat-conducting plate is respectively fixed at the opening of a strip block, and each second heat-conducting plate is respectively arranged between two adjacent first heat-conducting plates, each first heat-conducting plate and each second heat-conducting plate are cocentric with the ring, the inner wall of each first heat-conducting plate is provided with a slide groove for connecting the corresponding second heat-conducting plate, and the inner walls of each first heat-conducting plate and each second heat-conducting plate are respectively flush with the inner walls of the corresponding first fan-shaped block and the second fan-shaped block.

[0016] Preferably, each second fan-shaped block has a first extension block extending outward on its outer wall, each second heat conducting plate has a second extension block extending outward on its outer wall, a connecting rod is provided between every two corresponding first extension blocks and second extension blocks, the end of each connecting rod close to the disc passes through the disc and extends outward, each connecting rod can move along the axial direction of the disc, a strip opening is provided on the disc for each connecting rod to move, and an end cap is also provided on the protruding end of each connecting rod.

[0017] Preferably, a first guide rod is extended outward from the outer wall of each first sector block, the axial direction of each first guide rod is perpendicular to the axial direction of the ring, the end of each first guide rod extends outward through the ring, and a guide opening is provided on the ring for each first guide rod to pass through.

[0018] Preferably, the contraction drive mechanism includes a rotating disk, a second guide rod and a linkage rod; the rotating disk is coaxially sleeved on the disk, a bearing is coaxially provided on the disk, and the rotating disk is fixedly connected to the bearing; there are three second guide rods, each of which is respectively arranged on the outer wall of a strip block and close to the disk, the axial direction of each second guide rod is parallel to the axial direction of the first guide rod, and the disk is provided with a guide sleeve sleeved on each second guide rod; there are three linkage rods, and the three linkage rods are evenly distributed on the rotating disk along the circumferential direction of the rotating disk, and each linkage rod is respectively connected to the corresponding second guide rod; a rotating driver for driving the rotating disk to rotate is provided on the disk.

[0019] Preferably, a convex column is provided at the position of each linkage rod on the rotating disk, one end of each linkage rod is respectively sleeved on the corresponding convex column through a sleeve opening, one end of each second guide rod passing through the corresponding guide sleeve has a hinged portion, and the other end of each linkage rod is respectively hinged on the corresponding hinged portion.

[0020] Preferably, a ring gear is coaxially and fixedly provided on the rotating disk and is transmission-connected to the rotating driver.

[0021] Preferably, the spray unit includes a spray barrel and a fixing part; the spray barrel is coaxially arranged between the circular ring and the wiring harness displacement mechanism, and a plurality of nozzles are opened on the spray barrel along its circumferential direction; the fixing part is fixedly arranged between the circular ring and the wiring harness displacement mechanism, and the spray barrel is fixedly mounted on the fixing part.

[0022] Preferably, the drying unit includes a drying cylinder and a sliding member; the drying cylinder is coaxially arranged between the disc and the wire take-up machine, the end of the drying cylinder is fixedly connected to the disc, and a plurality of air ports are opened on the drying cylinder along its axial direction; the sliding member is slidably arranged on the bracket, and the drying cylinder is fixedly mounted on the sliding member.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present application drives the shrinking coating mechanism to adjust to the position of the insulating paint of the specified thickness through the shrinking driving mechanism. As the enameled wire is wound, the excess insulating paint on the enameled wire except the specified thickness is scraped off, thereby achieving uniform coating of the insulating paint, ensuring the consistency of the thickness of the insulating paint on the enameled wire, avoiding the influence of different thicknesses of the insulating paint on the enameled wire on the quality of the enameled wire, and improving the coating effect of the insulating paint.

[0025] 2. In the present application, the first fan-shaped block and the second fan-shaped block cooperate with each other. As the first fan-shaped block moves, the second fan-shaped block moves synchronously, and the inner walls of the first fan-shaped block and the second fan-shaped block always remain flush, thereby achieving comprehensive scraping of excess insulating paint around the enameled wire, ensuring the flatness and uniformity of the insulating paint on the enameled wire, and ensuring the quality of the insulating paint.

[0026] 3. In the present application, the first heat conducting plate and the second heat conducting plate are coordinated with each other, and the strip block and the first fan-shaped block are linked to drive the movement of the first heat conducting plate, so that the first heat conducting plate and the second heat conducting plate are covered around the insulating paint. With the conduction of heat, the insulating paint is initially dried, which has a shaping effect and avoids the insulating paint from being affected by hot air and becoming uneven. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a process flow chart of the insulating paint coating process of an enameled wire;

[0028] Figure 2 The present invention is a three-dimensional structural schematic diagram of a coating device in an insulating paint coating process for enameled wires;

[0029] Figure 3 yes Figure 2 A top view of

[0030] Figure 4 yes Figure 3 A three-dimensional structural cross-sectional view at AA;

[0031] Figure 5 It is a schematic diagram of a partial three-dimensional structure of a coating device in an insulating paint coating process for enameled wires;

[0032] Figure 6 It is a schematic diagram of the partial three-dimensional structure decomposition of a coating device in the insulating paint coating process of an enameled wire;

[0033] Figure 7 yes Figure 5 A top view of

[0034] Figure 8 yes Figure 7 The BB section of the three-dimensional structure

[0035] Fig. 9 yes Figure 7 A sectional view of the three-dimensional structure at CC;

[0036] Fig.10 It is a sectional view of the three-dimensional structure at DD of 7;

[0037] Fig.11 The present invention is a partial three-dimensional structural schematic diagram of a uniform control component of a coating device in an insulating paint coating process for enameled wires;

[0038] Fig.12 yes Fig.11 Schematic diagram of the three-dimensional structure decomposition.

[0039] The numbers in the figure are:

[0040] 1- Bracket;

[0041] 2- Pay-off machine;

[0042] 21- enameled wire;

[0043] 3- Take-up machine;

[0044] 4-Wire harness displacement mechanism;

[0045] 5-Spraying unit;

[0046] 51- spray barrel; 511- nozzle;

[0047] 52-fixing parts;

[0048] 6-Drying unit;

[0049] 61-drying drum; 611-air inlet;

[0050] 62-sliding member;

[0051] 7-Uniform control components;

[0052] 71-ring;

[0053] 72-disc; 721-connecting rod; 722-end sleeve;

[0054] 73-shrinking and covering mechanism; 731-first sector block; 7311-first guide rod; 732-second sector block; 7321-first extension block;

[0055] 74- flat heat conduction mechanism; 741- bar block; 7411- heating cavity; 7412- pipe opening; 7413- guide sleeve; 742- first heat conduction plate; 743- second heat conduction plate; 7431- second extension block;

[0056] 75-contraction drive mechanism; 751-rotating disk; 7511-bearing; 7512-convex column; 752-second guide rod; 7521-hinge portion; 753-linkage rod; 754-ring gear. DETAILED DESCRIPTION

[0057] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0058] See also Figure 1-Figure 12As shown, an insulating paint coating process for enameled wires is used in the coating process. The coating device includes a bracket 1, a wire pay-off machine 2, a wire take-up machine 3, a wire harness displacement mechanism 4, a spray unit 5 and a drying unit 6; the wire harness displacement mechanism 4 is arranged on the bracket 1, and the wire harness displacement mechanism 4 is located between the wire pay-off machine 2 and the wire take-up machine 3; the spray unit 5 is arranged on the wire harness displacement mechanism 4, and the spray unit 5 is located between the wire harness displacement mechanism 4 and the wire take-up machine 3; the drying unit 6 is arranged on the bracket 1, and the drying unit 6 is located between the spray unit 5 and the wire take-up machine 3; and also includes a uniform control component 7 for maintaining a uniform thickness of the insulating paint on the enameled wire 21, and the uniform control component 7 includes a ring 71 and a disk 72 , a shrinking coating mechanism 73 and a flat heat-conducting mechanism 74; the ring 71 is arranged on the spraying unit 5; the disc 72 is arranged on the drying unit 6; the shrinking coating mechanism 73 is arranged between the ring 71 and the disc 72 and is installed on the ring 71; the flat heat-conducting mechanism 74 is arranged between the shrinking coating mechanism 73 and the disc 72 and is installed on the disc 72, and the flat heat-conducting mechanism 74 and the shrinking coating mechanism 73 are matched and connected; a shrinking driving mechanism 75 is provided on the disc 72 for driving the shrinking coating mechanism 73 to scrape off excess insulating paint according to the thickness of the specified insulating paint; the enameled wire 21 passes through the spraying unit 5, the shrinking coating mechanism 73, the flat heat-conducting mechanism 74 and the drying unit 6 in sequence;

[0059] The coating process includes the following steps:

[0060] S1, the enameled wire 21 is retracted and released by the wire pay-off machine 2 and the wire take-up machine 3 operating synchronously;

[0061] S2, spraying the insulating varnish on the enameled wire 21 through the spraying unit 5;

[0062] S3, driving the shrinking coating mechanism 73 through the shrinking driving mechanism 75 to scrape off the excess insulating paint beyond the specified thickness on the enameled wire 21;

[0063] S4, the flat heat-conducting mechanism 74 cooperates with the shrinking coating mechanism 73 so as to be close to the enameled wire 21 to preliminarily dry the insulating varnish;

[0064] S5 , the insulating varnish on the enameled wire 21 is further dried completely by the drying unit 6 and is wound up by the wire take-up machine 3 with the assistance of the wire harness displacement mechanism 4 .

[0065] When the enameled wire 21 is coated with insulating varnish, first, one end of the rolled enameled wire 21 is pulled out from the pay-off machine 2 and sequentially passes through the spray unit 5, the shrink coating mechanism 73, the flat heat conducting mechanism 74 and the drying unit 6, so as to be fixed on the take-up machine 3. As the pay-off machine 2 and the take-up machine 3 operate simultaneously, the enameled wire 21 is gradually wound on the take-up machine 3. As the enameled wire 21 gradually passes through the spray unit 5, the shrink coating mechanism 73, the flat heat conducting mechanism 74 and the drying unit 6, the spray unit 5 fully coats the insulating varnish on the enameled wire 21. Then, the shrink drive mechanism 75 drives the shrink coating mechanism 73 to approach the enameled wire 21. The shrink coating mechanism 73 is coated on the position of the specified thickness of the insulating varnish on the enameled wire 21. As the enameled wire 21 is wound, the insulating varnish on the enameled wire 21 passes through the shrink drive mechanism 75. The shrinking and coating mechanism 73 is used to scrape off the excess insulating varnish on the enameled wire 21 except for the specified thickness. As the shrinking driving mechanism 75 drives the shrinking and coating mechanism 73, the flat heat-conducting mechanism 74 is also linked thereto. The flat heat-conducting mechanism 74 and the shrinking and coating mechanism 73 are together close to the insulating varnish on the enameled wire 21, so that the insulating varnish is dried more effectively to achieve the effect of preliminary drying. The flat heat-conducting mechanism 74 is close to the insulating varnish, which has a supporting and shaping effect on the insulating varnish, thereby avoiding the uneven thickness of the insulating varnish due to the influence of airflow after it is completely dried. Finally, the enameled wire 21 passes through the drying unit 6, and the drying unit 6 further completely dries the enameled wire 21. The wire take-up machine 3 takes it up, completing the coating of the insulating varnish on the enameled wire 21 and achieving the effect of maintaining uniform thickness.

[0066] See also Fig. 9 As shown, the shrink wrapping mechanism 73 includes a first fan-shaped block 731 and a second fan-shaped block 732; there are three first fan-shaped blocks 731 and three second fan-shaped blocks 732, and the three first fan-shaped blocks 731 are evenly distributed inside the circular ring 71 along the circumferential direction of the circular ring 71, and each second fan-shaped block 732 is respectively arranged between two adjacent first fan-shaped blocks 731, and each first fan-shaped block 731 and each second fan-shaped block 732 are cocentric with the circular ring 71, and the inner wall of each first fan-shaped block 731 is provided with a sliding groove for connecting the corresponding second fan-shaped block 732.

[0067] When the shrinking and wrapping mechanism 73 is driven by the shrinking driving mechanism 75, the three first fan-shaped blocks 731 synchronously approach the enameled wire 21 until the inner wall of the first fan-shaped block 731 is kept flush with the insulating paint of the specified thickness. As the three first fan-shaped blocks 731 move, the three second fan-shaped blocks 732 move accordingly, and the inner wall of the second fan-shaped block 732 always remains flush with the inner wall of the first fan-shaped block 731. During the winding process of the enameled wire 21, the excess insulating paint on the enameled wire 21 except for the specified thickness is scraped off by the first fan-shaped block 731 and the second fan-shaped block 732. Due to the closed-loop structure formed by the three first fan-shaped blocks 731 and the three second fan-shaped blocks 732, the excess insulating paint around the enameled wire 21 can be scraped off, thereby achieving the effect of uniform insulating paint thickness.

[0068] See also Fig.10 As shown, the flat heat-conducting mechanism 74 includes a strip block 741, a first heat-conducting plate 742 and a second heat-conducting plate 743; there are three strip blocks 741, one end of each strip block 741 is fixedly connected to a first fan-shaped block 731, and the other end of each strip block 741 extends along the axis direction of the ring 71 toward the direction of the disk 72, each strip block 741 is provided with a heating cavity 7411, the inner wall of each strip block 741 is open, and each strip block 741 is provided with a plurality of pipe openings 7412 connected to the heating cavity 7411; the first heat-conducting plate 742 and the second heat-conducting plate 743 each have three, The first heat conducting plate 742 and the second heat conducting plate 743 are both in an arc-shaped structure. Each first heat conducting plate 742 is respectively fixed in an opening of a strip block 741, and each second heat conducting plate 743 is respectively arranged between two adjacent first heat conducting plates 742. Each first heat conducting plate 742 and each second heat conducting plate 743 are cocentric with the circular ring 71. The inner wall of each first heat conducting plate 742 is provided with a sliding groove for connecting the corresponding second heat conducting plate 743, and the inner walls of each first heat conducting plate 742 and each second heat conducting plate 743 are respectively flush with the inner walls of the corresponding first sector block 731 and the second sector block 732.

[0069] When the first sector block 731 moves, since the strip block 741 is fixed on the first sector block 731, the strip block 741 moves together with the first sector block 731. As the strip block 741 approaches the enameled wire 21, the inner wall of the first heat conducting plate 742 on the strip block 741 is attached to the insulating paint surface of the specified thickness, and the second heat conducting plate 743 is connected to the first heat conducting plate 742. Therefore, the inner wall of the second heat conducting plate 743 is also attached to the insulating paint surface of the specified thickness, and the inner walls of the first heat conducting plate 742 and the second heat conducting plate 743 are always kept flat. Hot air is passed into the heating cavity 7411 through the pipe opening 7412 on the strip block 741, and the hot air contacts the first heat conducting plate 742, which transfers the heat to the insulating varnish. Due to the contact between the first heat conducting plate 742 and the second heat conducting plate 743, the first heat conducting plate 742 transfers the heat to the second heat conducting plate 743, so that the insulating varnish around the enameled wire 21 can be subjected to heat conduction. In the process of preliminary drying of the insulating varnish on the enameled wire 21, it also has a shaping effect, so as to prevent the insulating varnish from being affected by the hot air and becoming uneven.

[0070] See also Fig.11 and Fig.12 As shown, each second fan-shaped block 732 has a first extension block 7321 extending outward from the outer wall, and each second heat conducting plate 743 has a second extension block 7431 extending outward from the outer wall. A connecting rod 721 is provided between every two corresponding first extension blocks 7321 and second extension blocks 7431. The end of each connecting rod 721 close to the disk 72 extends outward through the disk 72. Each connecting rod 721 can move along the axial direction of the disk 72. A strip opening is provided on the disk 72 for each connecting rod 721 to move, and an end cap 722 is also sleeved on the protruding end of each connecting rod 721.

[0071] When the first fan-shaped block 731 drives the second fan-shaped block 732 to move, in order to promote uniform movement of each second fan-shaped block 732 and each second heat conducting plate 743, the second fan-shaped block 732 is connected to the second heat conducting plate 743 by a connecting rod 721, and the second fan-shaped block 732 and the corresponding second heat conducting plate 743 move synchronously along the axial direction of the disk 72, thereby effectively realizing synchronous opening or contraction between the first fan-shaped block 731 and the second fan-shaped block 732, and between the first heat conducting plate 742 and the second heat conducting plate 743.

[0072] See also Fig. 9As shown, a first guide rod 7311 is extended outward from the outer wall of each first sector block 731, the axial direction of each first guide rod 7311 is perpendicular to the axial direction of the ring 71, and the end of each first guide rod 7311 extends outward through the ring 71, and a guide opening is provided on the ring 71 for each first guide rod 7311 to pass through.

[0073] When the first sector block 731 moves in a direction perpendicular to the axis of the ring 71, the first sector block 731 moves on the ring 71 under the guidance of the first guide rod 7311. The synchronous movement of the three first sector blocks 731 finally completes the coating of the insulating paint, thereby achieving the effect of scraping off excess insulating paint on the enameled wire 21.

[0074] See also Fig.10 As shown, the contraction drive mechanism 75 includes a rotating disk 751, a second guide rod 752 and a linkage rod 753; the rotating disk 751 is coaxially sleeved on the disk 72, a bearing 7511 is coaxially provided on the disk 72, and the rotating disk 751 is fixedly connected to the bearing 7511; there are three second guide rods 752, each of which is respectively arranged on the outer wall of a strip block 741 and close to the disk 72, the axial direction of each second guide rod 752 is parallel to the axial direction of the first guide rod 7311, and the disk 72 is provided with a guide sleeve 7413 sleeved on each second guide rod 752; there are three linkage rods 753, and the three linkage rods 753 are evenly distributed on the rotating disk 751 along the circumferential direction thereof, and each linkage rod 753 is respectively connected to the corresponding second guide rod 752; a rotating driver for driving the rotating disk 751 to rotate is provided on the disk 72.

[0075] When the contraction drive mechanism 75 is driven, the rotary driver drives the rotating disk 751 to rotate. As the rotating disk 751 rotates, since each second guide rod 752 is connected to the rotating disk 751 through a linkage rod 753, during the rotation of the rotating disk 751 in different directions, the linkage rod 753 will realize the push-pull movement of the bar block 741, thereby completing the coating of the insulating varnish by the first heat conducting plate 742 and the second heat conducting plate 743, and the first fan-shaped block 731 and the second fan-shaped block 732, thereby achieving the effect of uniform coating of the insulating varnish.

[0076] See also Fig.10 As shown, the rotating disk 751 has a boss 7512 at the position of each linkage rod 753, one end of each linkage rod 753 is respectively sleeved on the corresponding boss 7512 through a sleeve, and one end of each second guide rod 752 passing through the corresponding guide sleeve 7413 has a hinged portion 7521, and the other end of each linkage rod 753 is respectively hinged on the corresponding hinged portion 7521.

[0077] When the rotating disk 751 rotates, since one end of the linkage rod 753 is sleeved on the convex column 7512 and the other end is hinged on the hinge part 7521 of the second guide rod 752, the linkage rod 753 will twist with the rotation of the rotating disk 751, thereby driving the movement of the second guide rod 752 on the guide sleeve 7413, completing the movement of the bar block 741, thereby effectively promoting the first heat conducting plate 742 and the second heat conducting plate 743, as well as the first fan-shaped block 731 and the second fan-shaped block 732 to cover the insulating paint.

[0078] See also Fig.10 As shown, a ring gear 754 is coaxially and fixedly provided on the rotating disk 751 and is transmission-connected to the rotating driver.

[0079] When the rotary driver drives the rotary disk 751 to rotate, the rotary driver drives the rotary disk 751 to rotate through the transmission connection with the ring gear 754 .

[0080] See also Figure 5 , Figure 6 and Figure 8 As shown, the spray unit 5 includes a spray barrel 51 and a fixing part 52; the spray barrel 51 is coaxially arranged between the circular ring 71 and the wiring harness displacement mechanism 4, and a plurality of nozzles 511 are opened on the spray barrel 51 along its circumferential direction; the fixing part 52 is fixedly arranged between the circular ring 71 and the wiring harness displacement mechanism 4, and the spray barrel 51 is fixedly mounted on the fixing part 52.

[0081] When the spray unit 5 sprays insulating paint on the enameled wire 21, the paint is sprayed toward the enameled wire 21 through the several nozzles 511 on the spray barrel 51. By opening several nozzles 511 around the spray barrel 51 and spraying an appropriate amount of insulating paint on the enameled wire 21, the coating of the entire enameled wire 21 is completed.

[0082] See also Figure 4-Figure 6 As shown, the drying unit 6 includes a drying cylinder 61 and a sliding member 62; the drying cylinder 61 is coaxially arranged between the disc 72 and the wire take-up machine 3, the end of the drying cylinder 61 is fixedly connected to the disc 72, and a plurality of air ports 611 are opened on the drying cylinder 61 along its axial direction; the sliding member 62 is slidably arranged on the bracket 1, and the drying cylinder 61 is fixedly mounted on the sliding member 62.

[0083] When the drying unit 6 completely dries the insulating paint, before the enameled wire 21 coated with the insulating paint passes through the drying cylinder 61, a large amount of hot air is sprayed into the drying cylinder 61 through a plurality of air ports 611 on the drying cylinder 61, until the enameled wire 21 passes through, and the insulating paint on its surface is then wrapped by the hot air, achieving a complete drying effect.

[0084] The present application drives the shrinking coating mechanism 73 to adjust to the position of the insulating paint of the specified thickness through the shrinking driving mechanism 75. As the enameled wire 21 is wound, the excess insulating paint on the enameled wire 21 except the specified thickness is scraped off, ensuring that the thickness of the insulating paint on the enameled wire 21 is consistent, avoiding the insulating paint on the enameled wire 21 from having different thicknesses affecting the quality of the enameled wire 21, and improving the coating effect of the insulating paint.

[0085] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A process for coating insulating varnish of enameled wire, the coating process using a coating device, the coating device comprising a bracket (1), a wire pay-off machine (2), a wire take-up machine (3), a wire harness displacement mechanism (4), a spray unit (5) and a drying unit (6); The wire harness displacement mechanism (4) is arranged on the bracket (1), and the wire harness displacement mechanism (4) is located between the wire pay-off machine (2) and the wire take-up machine (3); the spray unit (5) is arranged on the wire harness displacement mechanism (4), and the spray unit (5) is located between the wire harness displacement mechanism (4) and the wire take-up machine (3); the drying unit (6) is arranged on the bracket (1), and the drying unit (6) is located between the spray unit (5) and the wire take-up machine (3); the characteristic is that: The apparatus also includes a uniform control component (7) for maintaining a uniform thickness of the insulating varnish on the enameled wire (21), wherein the uniform control component (7) includes a circular ring (71), a circular disc (72), a shrinking and coating mechanism (73), and a flat heat-conducting mechanism (74); the circular ring (71) is arranged on the spraying unit (5); the circular disc (72) is arranged on the drying unit (6); the shrinking and coating mechanism (73) is arranged between the circular ring (71) and the circular disc (72) and is installed on the circular ring (71); the flat heat-conducting mechanism (74) 4) arranged between the shrinking and coating mechanism (73) and the disc (72) and mounted on the disc (72), the flat heat conducting mechanism (74) being cooperatively connected with the shrinking and coating mechanism (73); the disc (72) being provided with a shrinking driving mechanism (75) for driving the shrinking and coating mechanism (73) to scrape off excess insulating paint according to the thickness of the specified insulating paint; the enameled wire (21) sequentially passes through the spraying unit (5), the shrinking and coating mechanism (73), the flat heat conducting mechanism (74) and the drying unit (6); The coating process includes the following steps: S1, taking up and releasing the enameled wire (21) by means of a wire pay-off machine (2) and a wire take-up machine (3) operating synchronously; S2, spraying insulating paint on the enameled wire (21) through a spraying unit (5); S3, driving the shrinking coating mechanism (73) through the shrinking driving mechanism (75) to scrape off the excess insulating paint beyond the specified thickness on the enameled wire (21); S4, preliminarily drying the insulating varnish by cooperating between the flat heat-conducting mechanism (74) and the shrinking coating mechanism (73) so as to bring it close to the enameled wire (21); S5, the insulating varnish on the enameled wire (21) is further dried completely by the drying unit (6) and is then reeled up by the wire take-up machine (3) with the assistance of the wire harness displacement mechanism (4).

2. The insulating varnish coating process for enameled wire according to claim 1, characterized in that: The shrinking and covering mechanism (73) comprises a first fan-shaped block (731) and a second fan-shaped block (732); There are three first sector blocks (731) and three second sector blocks (732), the three first sector blocks (731) are evenly distributed inside the circular ring (71) along the circumferential direction of the circular ring (71), each second sector block (732) is respectively arranged between two adjacent first sector blocks (731), each first sector block (731) and each second sector block (732) are cocentric with the circular ring (71), and the inner wall of each first sector block (731) is provided with a sliding groove for connecting the corresponding second sector block (732).

3. The insulating varnish coating process for enameled wire according to claim 2, characterized in that: The flat heat-conducting mechanism (74) comprises a strip block (741), a first heat-conducting plate (742) and a second heat-conducting plate (743); There are three strip blocks (741), one end of each strip block (741) is fixedly connected to a first fan-shaped block (731), the other end of each strip block (741) extends along the axis direction of the ring (71) towards the disk (72), each strip block (741) is provided with a heating cavity (7411), the inner wall of each strip block (741) is open, and each strip block (741) is provided with a plurality of pipe openings (7412) connected to the heating cavity (7411); There are three first heat conducting plates (742) and three second heat conducting plates (743), and the first heat conducting plates (742) and the second heat conducting plates (743) are both in an arc-shaped structure. Each first heat conducting plate (742) is respectively fixed in a fit at the opening of a strip block (741), and each second heat conducting plate (743) is respectively arranged between two adjacent first heat conducting plates (742). Each first heat conducting plate (742) and each second heat conducting plate (743) are co-centered with the circular ring (71), and the inner wall of each first heat conducting plate (742) is provided with a sliding groove for connecting the corresponding second heat conducting plate (743), and the inner walls of each first heat conducting plate (742) and each second heat conducting plate (743) are respectively in a flush state with the inner walls of the corresponding first sector block (731) and the second sector block (732).

4. The insulating varnish coating process for enameled wire according to claim 3, characterized in that: The outer wall of each second sector block (732) has a first extension block (7321) extending outward, the outer wall of each second heat conducting plate (743) has a second extension block (7431) extending outward, a connecting rod (721) is provided between every two corresponding first extension blocks (7321) and second extension blocks (7431), the end of each connecting rod (721) close to the disk (72) passes through the disk (72) and extends outward, each connecting rod (721) is able to move along the axis of the disk (72), a strip opening for each connecting rod (721) to move is provided on the disk (72), and an end cap (722) is sleeved on the protruding end of each connecting rod (721).

5. The insulating varnish coating process for enameled wire according to claim 3, characterized in that: A first guide rod (7311) is extended outwardly from the outer wall of each first sector block (731), the axial direction of each first guide rod (7311) is perpendicular to the axial direction of the circular ring (71), the end of each first guide rod (7311) passes through the circular ring (71) and extends outwardly, and a guide opening is provided on the circular ring (71) for each first guide rod (7311) to pass through.

6. The insulating varnish coating process for enameled wire according to claim 4, characterized in that: The contraction drive mechanism (75) comprises a rotating disk (751), a second guide rod (752) and a linkage rod (753); The rotating disk (751) is coaxially sleeved on the circular disk (72), a bearing (7511) is coaxially provided on the circular disk (72), and the rotating disk (751) is fixedly connected to the bearing (7511); There are three second guide rods (752), each second guide rod (752) is respectively arranged on the outer wall of a strip block (741) and at a position close to the disc (72), the axial direction of each second guide rod (752) is parallel to the axial direction of the first guide rod (7311), and the disc (72) is provided with a guide sleeve (7413) sleeved on each second guide rod (752); There are three linkage rods (753), and the three linkage rods (753) are evenly distributed on the rotating disk (751) along the circumferential direction thereof, and each linkage rod (753) is respectively connected to a corresponding second guide rod (752); The disc (72) is provided with a rotary driver for driving the rotary disc (751) to rotate.

7. The insulating varnish coating process for enameled wire according to claim 6, characterized in that: The rotating disk (751) is provided with a boss (7512) at the position of each linkage rod (753); one end of each linkage rod (753) is sleeved on the corresponding boss (7512) through a sleeve opening; one end of each second guide rod (752) passing through the corresponding guide sleeve (7413) is provided with a hinged portion (7521); and the other end of each linkage rod (753) is hinged on the corresponding hinged portion (7521).

8. The insulating varnish coating process for enameled wire according to claim 7, characterized in that: A ring gear (754) is coaxially and fixedly disposed on the rotating disk (751) and is transmission-connected to the rotating driver.

9. The insulating varnish coating process for enameled wire according to claim 1, characterized in that: The spray unit (5) comprises a spray barrel (51) and a fixing member (52); The spray barrel (51) is coaxially arranged between the circular ring (71) and the wire harness displacement mechanism (4), and a plurality of spray nozzles (511) are provided on the spray barrel (51) along its circumferential direction; The fixing member (52) is fixedly arranged between the circular ring (71) and the wire harness displacement mechanism (4), and the spray barrel (51) is fixedly mounted on the fixing member (52).

10. The insulating varnish coating process for enameled wire according to claim 1, characterized in that: The drying unit (6) comprises a drying cylinder (61) and a sliding member (62); The drying cylinder (61) is coaxially arranged between the disc (72) and the wire take-up machine (3), the end of the drying cylinder (61) is fixedly connected to the disc (72), and a plurality of air ports (611) are provided on the drying cylinder (61) along the axial direction thereof; The sliding member (62) is slidably arranged on the bracket (1), and the drying cylinder (61) is fixedly mounted on the sliding member (62).

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