Transformer coil and paint dipping device and method

Abstract

The invention discloses a transformer coil and a paint dipping device and method, and relates to the technical field of transformer production. The paint dipping device comprises a paint dipping pool, a top frame is arranged at the top end of the paint dipping pool, a top cover is arranged at the top end of the top frame, a lifting frame is slidably arranged in the paint dipping pool and the top frame, a lead screw lifting assembly matched with the lifting frame is arranged on the inner wall of the top frame, and a paint dipping rotary stirring assembly is arranged on the lifting frame. The lifting frame is provided with a rotation synchronous reciprocating swing assembly used in cooperation with the paint dipping rotation stirring assembly, and a coil positioning assembly is arranged in the paint dipping rotation stirring assembly. Through the arrangement of the paint dipping rotating stirring assembly and the rotating synchronous reciprocating swinging assembly, the paint dipping rotating stirring assembly drives the rotating frame to rotate, and meanwhile the rotating synchronous reciprocating swinging assembly drives the rotating frame to intermittently and reciprocatingly turn over and adjust with the fixed shaft as the axis; the shearing force of the coil to the paint liquid in the paint dipping process is improved, the infiltration capacity and the coating uniformity of the paint liquid to the coil are enhanced, and the paint liquid evenly permeates the surface of the coil.

Description

Technical Field

[0001] The invention relates to the technical field of transformer production, and in particular to a transformer coil and a paint dipping device and method. Background Art

[0002] The transformer coil is a key component of the transformer, responsible for transferring electrical energy from one circuit to another. They are usually composed of insulated wires wrapped around an iron core. During the production process of the transformer coil, the wires need to be wound on a winding machine according to the number of turns and coil arrangement required by the design, and then the wound coils are immersed in insulating varnish, or painted to enhance the insulation performance and mechanical strength of the coils. Finally, the coils are taken out of the varnish dipping tank to allow excess varnish to drip and then dried and solidified. Usually, during the transformer coil dipping process, the transformer coil is mainly placed on a dipping frame, and the dipping frame is lifted and lowered by a lifting device to immerse the transformer coil. The coil structure of the transformer is designed differently in the paint liquid or taken out from the paint liquid for dipping and dripping. If the coil is wound too tightly and the coil structure is complex, it will be difficult for the paint liquid to penetrate and discharge during the dipping and dripping process, resulting in uneven thickness of the paint film. During use, weak areas are more likely to break down and short-circuit. Secondly, the transformer coil is usually placed directly on the dipping frame and lacks the constraint of a limiting mechanism. During the dipping process, the coil is in a free state on the frame, and the resistance of the paint liquid will generate a force on the coil. Especially during the lifting process, this force may cause the coil to tilt or move, resulting in a coil collision, which has a direct impact on product quality. In response to the above problems, the inventor proposes a transformer coil and a dipping device and method for solving the above problems. Summary of the invention

[0003] In order to solve the problem of uniform paint film during the paint dipping process of transformer coils and prevent the transformer coils from colliding during the paint dipping process; the purpose of the present invention is to provide a transformer coil and a paint dipping device and method.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a transformer coil, comprising an annular core, both ends of the annular core are sleeved with annular insulating protective material, and the outer wall of the annular insulating protective material is evenly wound with a coil winding group.

[0005] A paint dipping device used for transformer coils comprises a paint dipping pool, a top frame is provided at the top of the paint dipping pool, a top cover is provided at the top of the top frame, a lifting frame is slidably provided in the paint dipping pool and the top frame, a screw lifting assembly used in conjunction with the lifting frame is provided on the inner wall of the top frame, a paint dipping rotating stirring assembly is provided on the lifting frame, a rotating synchronous reciprocating swinging assembly used in conjunction with the paint dipping rotating stirring assembly is provided on the lifting frame, a coil positioning assembly is provided in the paint dipping rotating stirring assembly, and a side plate is provided on the outer wall of the top cover close to the screw lifting assembly.

[0006] Preferably, the screw lifting assembly includes two symmetrically distributed fixed blocks, which are respectively fixedly mounted on the paint immersion tank and the inner wall of the top frame. A rotating screw is rotatably provided between the two fixed blocks. A nut is threadedly sleeved on the outer wall of the rotating screw, and the nut is fixedly mounted on the lifting frame. A No. 1 motor is fixedly provided on one side of the side panel, and the driving end of the No. 1 motor is connected to the rotating screw through a synchronous wheel transmission group. Two symmetrically distributed guide rails are fixedly provided on the inner wall of the top frame, and the lifting frame slides on the guide rails.

[0007] Preferably, the paint dipping and rotating stirring assembly includes a driving shaft and a sliding shaft, the driving shaft is rotatably installed in the middle of the top cover, the sliding shaft is slidably sleeved on the outer wall of the driving shaft, and the sliding shaft is rotatably installed on the lifting frame, a base is fixedly provided at the bottom end of the sliding shaft, a fixed shaft is rotatably provided on the base, a circular ring is provided at the end of the fixed shaft, and both ends of the fixed shaft are fixedly connected to the inner wall of the circular ring, a rotating frame is fixedly provided at the bottom end of the circular ring, a circular filter plate is fixedly provided at the top end of the circular ring, four fan-shaped filter plates distributed in a circular array are fixedly provided in the rotating frame, a No. 2 motor is fixedly provided on one side of the side plate, and the driving end of the No. 2 motor is connected to the driving shaft through a pulley transmission group.

[0008] The top end of the lifting gear is connected with the driving gear of the driving gear, and the bottom end of the lifting gear is connected with the driving gear of the driving gear through the transmission gear of the driving gear.

[0009] Preferably, the coil positioning assembly comprises four cross fixing frames distributed in an annular array, the four cross fixing frames are respectively fixedly mounted on the bottom end of the circular filter plate, four slide rails distributed in an annular array are fixedly arranged on the top of the cross fixing frame, sliders are slidably arranged on the four slide rails, a limiting shaft is fixedly arranged on the top end of the slider, a rotating shaft is rotatably arranged in the middle of the cross fixing frame, a rotating plate is fixedly arranged on the top end of the rotating shaft, arc rods are rotatably arranged at the four corners of the top end of the rotating plate, and the other end of the arc rod is rotatably connected to the corresponding slider, a rotating ring is rotatably sleeved on the outer wall of the circular ring, and a swing rod is fixedly arranged at the bottom end of the rotating shaft A transmission rod is rotatably provided at the other end of the swing rod, and the other end of the transmission rod is rotatably connected to the rotating ring. A fixed cylinder is fixedly provided at the top of one side of the rotating ring, and a plug is inserted through the fixed cylinder, and the plug passes through the rotating ring. A circular plate is fixedly sleeved on the outer wall of the plug, and a spring is sleeved on the outer wall of the plug, and two ends of the spring are respectively fixedly connected to the circular plate and the inner wall of the fixed cylinder. A plurality of slots for use with the plug are provided at the bottom end of the rotating frame, and four arc grooves distributed in a ring array are provided on the rotating ring. A guide wheel is rotatably provided at the bottom end of the cross fixing frame, and the guide wheel slides in the corresponding arc groove.

[0010] A method for using a transformer coil and a paint dipping device, comprising the following steps:

[0011] S1. First, a group of four transformer coils to be immersed in liquid are placed on the coil positioning assembly in sequence, and the coil positioning assembly drives four groups of limiting shafts to move synchronously centripetally and fit with the inner wall of the transformer coil to limit the transformer coil;

[0012] S2, driving the paint immersion rotating stirring assembly to descend through the screw lifting assembly so that the transformer coil is completely immersed in the paint liquid in the paint immersion tank, and then driving the rotating frame and the transformer coil to rotate in the paint liquid through the immersion rotating stirring assembly to stir the paint liquid;

[0013] S3, the rotating frame rotates while driving the synchronous reciprocating swing assembly to operate, and the synchronous reciprocating swing assembly drives the rotating frame to rotate while performing periodic swings, so that the paint liquid has a greater shearing effect on the coil surface during the flow process, which helps the penetration of the paint liquid and promotes the discharge of bubbles;

[0014] S4. After the paint dipping is completed, the transformer coil is driven to rise and separate from the paint liquid through the screw lifting assembly, and the paint dipping rotating stirring assembly is controlled to start. The transformer coil is driven to swing while the rotating frame rotates through the paint dipping rotating stirring assembly and the rotating synchronous reciprocating swing assembly to promote the dripping of the paint liquid;

[0015] S5. After the paint liquid has finished dripping, the transformer coil is driven to rise to the top through the screw lifting assembly, and the coil positioning assembly is controlled to stop limiting the coil, and finally the transformer coil is taken out in sequence.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a paint dipping rotating stirring component and a rotating synchronous reciprocating swing component, so that the paint dipping rotating stirring component drives the rotating frame to rotate, and at the same time, the rotating frame is driven by the rotating synchronous reciprocating swing component to intermittently reciprocate and turn around the fixed axis as the axis, thereby improving the shear force of the transformer coil on the paint liquid during the paint dipping process, enhancing the penetration ability of the paint liquid on the coil and the coating uniformity, so that the paint liquid evenly penetrates the coil surface and promotes the discharge of bubbles on the inner wall of the coil, thereby improving the overall product quality;

[0018] 2. The present invention provides a coil positioning assembly, so that the coil positioning assembly drives four groups of limit shafts to expand outward synchronously and fit with the inner wall of the corresponding transformer coil, thereby achieving the effect of synchronously limiting the four coils at the same time, effectively avoiding the movement and collision of the coils caused by the resistance of the paint liquid, and ensuring the stability and product quality of the entire varnishing process;

[0019] 3. The present invention provides a paint dipping rotating stirring component and a rotating synchronous reciprocating swing component, which drives the transformer coil to rotate while performing intermittent reciprocating swing adjustment through the paint dipping rotating stirring component and the rotating synchronous reciprocating swing component, thereby helping the paint liquid to drip from the surface of the transformer coil more effectively during the paint dripping process, reducing the paint liquid residue on the surface, avoiding uneven paint film thickness and improving the paint dripping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the transformer coil of the present invention;

[0022] Figure 2 This is a schematic diagram of the explosion structure of the transformer coil of the present invention;

[0023] Figure 3 It is a schematic diagram of the overall structure of the paint dipping device in the present invention;

[0024] Figure 4 It is a schematic diagram of the overall side section structure of the paint dipping device in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the rotating synchronous reciprocating swing assembly in the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the lifting ring and the adjusting wheel in the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the side section of the driving shaft and the sliding shaft in the present invention;

[0028] Figure 8 This is a schematic diagram of the explosion structure of the paint dipping and rotating stirring assembly in the present invention;

[0029] Fig. 9 It is a schematic diagram of the overall side section structure of the paint dipping rotating stirring assembly in the present invention;

[0030] Fig.10 It is a structural schematic diagram of the coil positioning assembly in the present invention;

[0031] Fig.11 It is a structural schematic diagram of the screw rod lifting assembly in the present invention;

[0032] Fig.12 for Figure 6 A schematic diagram of the structure enlargement at the center A;

[0033] Fig.13 for Figure 8 A schematic diagram of the structure enlarged at B in the middle;

[0034] Fig.14 for Fig.10 A schematic diagram of the structure enlarged at C in the middle;

[0035] Fig.15 for Fig.10 Enlarged schematic diagram of the structure at D in the middle.

[0036] In the figure: 101, annular core; 102, annular insulating protective material; 103, coil winding group; 2, varnish immersion tank; 3, top frame; 4, top cover; 5, lifting frame; 6, screw lifting assembly; 601, fixed block; 602, rotating screw; 603, nut; 604, guide rail; 605, No. 1 motor; 7, varnish immersion rotating stirring assembly; 701, driving shaft; 702, sliding shaft; 703, base; 704, fixed shaft; 705, ring; 706, rotating frame; 707, circular filter plate; 708, fan-shaped filter plate; 709, No. 2 motor; 8, rotating synchronous reciprocating swing assembly; 801, lifting ring; 802, lifting rod; 803 , adjusting wheel; 804, adjusting rod; 805, fixing bracket; 806, driven shaft; 807, rotating rod; 808, connecting rod; 809, driving shaft; 810, driving wheel; 811, driven wheel; 812, rotating shaft; 9, coil positioning assembly; 901, cross fixing frame; 902, slide rail; 903, slider; 904, limit shaft; 905, rotating shaft; 906, rotating plate; 907, arc rod; 908, rocker rod; 909, rotating ring; 910, transmission rod; 911, fixed cylinder; 912, plug; 913, round plate; 914, spring; 915, slot; 916, arc groove; 917, guide wheel; 10, side plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example: Figure 1-15 As shown, the present invention provides a technical solution: a transformer coil, comprising an annular core 101, both ends of the annular core 101 are sleeved with annular insulating protection material 102, and the outer wall of the annular insulating protection material 102 is evenly wound with a coil winding group 103.

[0039] A paint dipping device used for a transformer coil comprises a paint dipping pool 2, a top frame 3 is provided at the top of the paint dipping pool 2, a top cover 4 is provided at the top of the top frame 3, a lifting frame 5 is slidably provided between the paint dipping pool 2 and the top frame 3, a screw lifting assembly 6 used in conjunction with the lifting frame 5 is provided on the inner wall of the top frame 3, a paint dipping rotating stirring assembly 7 is provided on the lifting frame 5, a rotating synchronous reciprocating swinging assembly 8 used in conjunction with the paint dipping rotating stirring assembly 7 is provided on the lifting frame 5, a coil positioning assembly 9 is provided in the paint dipping rotating stirring assembly 7, and a side plate 10 is provided on the outer wall of the top cover 4 close to the screw lifting assembly 6.

[0040] The screw lifting assembly 6 includes two symmetrically distributed fixed blocks 601, and the two fixed blocks 601 are respectively fixedly installed on the inner wall of the paint immersion pool 2 and the top frame 3. A rotating screw 602 is rotatably provided between the two fixed blocks 601. A nut 603 is threadedly sleeved on the outer wall of the rotating screw 602, and the nut 603 is fixedly installed on the lifting frame 5. A No. 1 motor 605 is fixedly provided on one side of the side plate 10, and the driving end of the No. 1 motor 605 is connected to the rotating screw 602 through a synchronous wheel transmission group. Two symmetrically distributed guide rails 604 are fixedly provided on the inner wall of the top frame 3, and the lifting frame 5 slides on the guide rails 604.

[0041] By adopting the above technical solution, the lifting frame 5 is made to move up and down reciprocatingly under the action of the guide rail 604 .

[0042] The paint dipping rotating stirring assembly 7 includes a driving shaft 701 and a sliding shaft 702. The driving shaft 701 is rotatably installed in the middle of the top cover 4, the sliding shaft 702 is slidably sleeved on the outer wall of the driving shaft 701, and the sliding shaft 702 is rotatably installed on the lifting frame 5, so that the lifting frame 5 drives the sliding shaft 702 to move synchronously during the lifting and lowering process. A base 703 is fixedly provided at the bottom end of the sliding shaft 702, and a fixed shaft 704 is rotatably provided on the base 703. A circular ring 705 is provided at the end of the fixed shaft 704, and both ends of the fixed shaft 704 are fixedly connected to the inner wall of the circular ring 705. A rotating frame 706 is fixedly provided at the bottom end of the circular ring 705, and a circular filter plate 707 is fixedly provided at the top of the circular ring 705. Four fan-shaped filter plates 708 distributed in a circular array are fixedly provided in the rotating frame 706. A No. 2 motor 709 is fixedly provided on one side of the side plate 10, and the driving end of the No. 2 motor 709 is connected to the driving shaft 701 through a pulley transmission group.

[0043] By adopting the above technical solution, the driving shaft 701 and the sliding shaft 702 drive the rotating frame 706 to rotate.

[0044] The rotating synchronous reciprocating swing component 8 includes a lifting ring 801 and a lifting rod 802. The lifting ring 801 is slidably sleeved on the outer wall of the sliding shaft 702. The lifting rod 802 is inserted through the lifting frame 5 on the side close to the sliding shaft 702. An adjusting wheel 803 used in conjunction with the lifting ring 801 is fixedly arranged at the bottom end of the lifting rod 802, and the adjusting wheel 803 is slidably connected to the lifting ring 801. An adjusting rod 804 used in conjunction with the fixed shaft 704 is rotatably arranged on one side of the bottom end of the lifting ring 801, and the other end of the adjusting rod 804 is rotatably connected to the top of the rotating frame 706. A fixed bracket 805 is fixedly arranged on one side of the top of the lifting frame 5. A driven shaft 806 is rotatably arranged on the fixed bracket 805 close to the side of the lifting rod 802. A rotating rod 807 is fixedly arranged on the end of the driven shaft 806. A connecting rod 808 is rotatably arranged on the other end of the connecting rod 808, and the other end of the connecting rod 808 is rotatably connected to the top of the lifting rod 802.

[0045] By adopting the above technical solution, the lifting ring 801 is lifted and lowered, and the adjusting rod 804 drives the rotating frame 706 to swing around the fixed shaft 704 as the axis.

[0046] The coil positioning assembly 9 includes four cross fixing frames 901 distributed in a circular array, and the four cross fixing frames 901 are respectively fixedly installed at the bottom end of the circular filter plate 707, and four slide rails 902 distributed in a circular array are fixedly arranged on the top of the cross fixing frame 901. Slide blocks 903 are slidably provided on the four slide rails 902, and a limit shaft 904 is fixedly provided on the top of the slide block 903. A rotating shaft 905 is rotatably provided in the middle part of the cross fixing frame 901, and a rotating plate 906 is fixedly provided on the top of the rotating shaft 905. Arc rods 907 are rotatably provided at the four corners of the top of the rotating plate 906, and the other end of the arc rod 907 is rotatably connected to the corresponding slider 903. A rotating ring 909 is rotatably sleeved on the outer wall of the circular ring 705, and a swing rod 908 is fixedly provided at the bottom of the rotating shaft 905. A transmission rod 910 is rotatably provided at the other end of the swing rod 908, and the other end of the transmission rod 910 is rotatably connected to the rotating ring 909.

[0047] By adopting the above technical solution, the four limiting shafts 904 can be synchronously moved to expand outward or contract toward the centripetal direction.

[0048] A driving shaft 809 is rotatably provided on the other side of the fixed bracket 805, a driving wheel 810 is fixedly sleeved on the outer wall of the driving shaft 809, a driven wheel 811 is sleeved on the outer wall of the driven shaft 806, and the driven wheel 811 is meshed and connected with the driving wheel 810, a rotating shaft 812 is rotatably provided on the side of the lifting frame 5 close to the driving shaft 809, and the rotating shaft 812 is connected to the sliding shaft 702 through a synchronous wheel transmission group, and the rotating shaft 812 is connected to the driving shaft 809 through a bevel gear group.

[0049] By adopting the above technical solution, the driving shaft 809 rotates one circle to drive the driven shaft 806 to rotate one quarter of the circle.

[0050] A fixed cylinder 911 is fixedly provided at the top of one side of the rotating ring 909, a plug 912 is inserted through the fixed cylinder 911, and the plug 912 passes through the rotating ring 909, a circular plate 913 is fixedly sleeved on the outer wall of the plug 912, a spring 914 is sleeved on the outer wall of the plug 912, and two ends of the spring 914 are fixedly connected to the circular plate 913 and the inner wall of the fixed cylinder 911 respectively, and a plurality of slots 915 for use with the plug 912 are opened at the bottom end of the rotating frame 706.

[0051] By adopting the above technical solution, the plug 912 is inserted into the slot 915 to limit the rotating ring 909.

[0052] The rotating ring 909 is provided with four arc grooves 916 distributed in a circular array. A guide wheel 917 is rotatably provided at the bottom end of the cross fixing frame 901 , and the guide wheel 917 slides in the corresponding arc groove 916 .

[0053] By adopting the above technical solution, the rotating ring 909 moves under the guidance of the arc groove 916 and the guide wheel 917.

[0054] A method for using a transformer coil and a paint dipping device, comprising the following steps:

[0055] S1. First, a group of four transformer coils to be immersed in liquid are placed on the coil positioning assembly 9 in sequence, and the coil positioning assembly 9 drives four groups of limiting shafts 904 to move synchronously centripetally and fit with the inner wall of the transformer coil to limit the transformer coil;

[0056] S2, the paint immersion rotating stirring assembly 7 is driven to descend by the screw lifting assembly 6 so that the transformer coil is completely immersed in the paint liquid in the paint immersion tank 2, and then the immersion rotating stirring assembly drives the rotating frame 706 and the transformer coil to rotate in the paint liquid to stir the paint liquid;

[0057] S3, the rotating frame 706 rotates while driving the rotating synchronous reciprocating swing assembly 8 to operate, and the rotating frame 706 is driven to rotate while performing periodic swings by rotating the synchronous reciprocating swing assembly 8, so that the paint liquid has a greater shearing effect on the coil surface during the flow process, which helps the penetration of the paint liquid and promotes the discharge of bubbles;

[0058] S4, after the paint dipping is completed, the transformer coil is driven to rise and separate from the paint liquid through the screw lifting assembly 6, and the paint dipping rotating stirring assembly 7 is controlled to start, and the transformer coil is driven to swing while the rotating frame 706 rotates through the paint dipping rotating stirring assembly 7 and the rotating synchronous reciprocating swing assembly 8 to promote the dripping of the paint liquid;

[0059] S5. After the paint liquid has finished dripping, the transformer coil is driven to rise to the top through the screw lifting assembly 6, and the coil positioning assembly 9 is controlled to stop limiting the coil, and finally the transformer coil is taken out in sequence.

[0060] Working principle: First, place a group of four transformer coils on the corresponding limit shafts 904 in sequence, and the initial position of the rotating frame 706 is horizontal and stationary. Fig. 9 , Fig.12 As shown, the plug 912 is manually pulled up to separate the plug 912 from the slot 915, and then Figure 6 , Figure 8 and Fig. 9As shown, the fixed cylinder 911 slides clockwise in the guide groove corresponding to the rotating frame 706 to drive the rotating ring 909 to rotate synchronously. During the rotation process, the rotating ring 909 drives the four rotating shafts 905 to rotate synchronously clockwise through the four transmission rods 910 and the corresponding swing rods 908, as shown in FIG. Fig.15 As shown, the rotating shaft 905 drives the rotating plate 906 to rotate synchronously clockwise during the rotation process. The rotating plate 906 pushes four corresponding sliders 903 through four arc-shaped rods 907 to expand synchronously and centripetally under the guidance of the slide rail 902. When the slider 903 moves, it drives the four limiting shafts 904 to expand synchronously and centripetally to fit the inner wall of the transformer coil. The plug 912 is released and pushed into the corresponding slot 915 under the action of the spring 914 to limit the rotating ring 909, thereby achieving the effect of limiting the transformer coil.

[0061] Then as Fig.11 As shown, the control turns on the No. 1 motor 605, and the driving end of the No. 1 motor 605 drives the rotating screw 602 to rotate clockwise through the synchronous wheel transmission group. The rotating screw 602 drives the lifting frame 5 to descend to the bottom under the guidance of the guide rail 604 through the nut 603 so that the transformer coil is completely immersed in the paint liquid, and then the No. 2 motor 709 is controlled to rotate slowly. The driving end of the No. 2 motor 709 drives the driving shaft 701 to rotate through the pulley transmission group. During the descent process, the lifting frame 5 drives the sliding shaft 702 to slide down synchronously on the outer wall of the driving shaft 701. The driving shaft 701 drives the rotating frame 706 to rotate synchronously and slowly through the sliding shaft 702, the base 703, the fixed shaft 704 and the ring 705. During the rotation process, the sliding shaft 702 The synchronous wheel transmission group drives the rotating shaft 812 to rotate synchronously, and the rotating shaft 812 drives the driving shaft 809 to rotate through the bevel gear group. The driving shaft 809 drives the driven shaft 806 to rotate one quarter of the circle through the driving wheel 810 and the driven wheel 811 every time the driving shaft 809 rotates one circle. During the rotation of the driven shaft 806, the lifting rod 802 is driven to move intermittently through the rotating rod 807 and the connecting rod 808. During the lifting and moving of the lifting rod 802, the lifting ring 801 is driven to move synchronously and intermittently on the sliding shaft 702 through the adjusting wheel 803. During the lifting and lowering of the lifting ring 801, the rotating frame 706 is driven to swing and adjust with the fixed shaft 704 as the axis through the adjusting rod 804, so as to achieve the effect of swinging and adjusting to a certain extent while the rotating frame 706 rotates;

[0062] After the varnishing is completed, the No. 2 motor 709 is turned off and the No. 1 motor 605 is controlled to rotate in the opposite direction. According to the same steps as above, the rotating frame 706 and the transformer coil are driven to rise to the middle. At this time, the transformer coil is completely separated from the paint liquid. The paint liquid on the surface of the transformer coil drips into the varnishing pool 2 through the circular filter plate 707 and the fan-shaped filter plate 708 for dripping. During the dripping process, the No. 2 motor 709 is controlled to continue to rotate slowly. According to the same steps as above, the rotating frame 706 is driven to swing and adjust intermittently during the rotation process, so as to promote the dripping and discharge of the paint liquid on the surface of the transformer coil and improve the dripping efficiency.

[0063] After the paint dripping is completed, the No. 1 motor 605 is controlled to continue to rotate in the reverse direction to drive the rotating frame 706 and the transformer coil to rise to the top and reset. According to the same steps as above, the plug 912 is driven to move to the initial slot 915 to stop limiting the transformer coil, and the transformer coil is taken out in turn to complete the paint dipping of the transformer coil.

[0064] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A transformer coil, comprising a toroidal core (101), characterized in that: Both ends of the annular core (101) are sleeved with an annular insulating protective material (102), and the outer wall of the annular insulating protective material (102) is evenly wound with a coil winding group (103).

2. A varnish dipping device for transformer coils as claimed in claim 1, comprising a varnish dipping tank (2), characterized in that: The top of the paint immersion pool (2) is provided with a top frame (3), the top of the top frame (3) is provided with a top cover (4), the paint immersion pool (2) and the top frame (3) are slidably provided with a lifting frame (5), the inner wall of the top frame (3) is provided with a screw lifting assembly (6) used in conjunction with the lifting frame (5), the lifting frame (5) is provided with a paint immersion rotating stirring assembly (7), the lifting frame (5) is provided with a rotating synchronous reciprocating swing assembly (8) used in conjunction with the paint immersion rotating stirring assembly (7), the paint immersion rotating stirring assembly (7) is provided with a coil positioning assembly (9), and the outer wall of the top cover (4) is provided with a side plate (10) on the side close to the screw lifting assembly (6).

3. A varnish dipping device for transformer coils as claimed in claim 2, characterized in that: The screw lifting assembly (6) comprises two symmetrically distributed fixed blocks (601), the two fixed blocks (601) are fixedly mounted on the inner wall of the paint immersion tank (2) and the top frame (3), respectively, a rotating screw (602) is rotatably arranged between the two fixed blocks (601), a nut (603) is threadedly sleeved on the outer wall of the rotating screw (602), and the nut (603) is fixedly mounted on the lifting frame (5), a No. 1 motor (605) is fixedly mounted on one side of the side plate (10), and the driving end of the No. 1 motor (605) is connected to the rotating screw (602) through a synchronous wheel transmission group, and two symmetrically distributed guide rails (604) are fixedly mounted on the inner wall of the top frame (3), and the lifting frame (5) slides on the guide rails (604).

4. A varnish dipping device for transformer coils as claimed in claim 2, characterized in that: The paint dipping rotating stirring assembly (7) comprises a driving shaft (701) and a sliding shaft (702), wherein the driving shaft (701) is rotatably mounted on the middle part of the top cover (4), the sliding shaft (702) is slidably sleeved on the outer wall of the driving shaft (701), and the sliding shaft (702) is rotatably mounted on the lifting frame (5), a base (703) is fixedly provided at the bottom end of the sliding shaft (702), a fixed shaft (704) is rotatably provided on the base (703), and a circular ring (705) is provided at the end of the fixed shaft (704). ), and both ends of the fixed shaft (704) are fixedly connected to the inner wall of the circular ring (705), a rotating frame (706) is fixedly provided at the bottom end of the circular ring (705), a circular filter plate (707) is fixedly provided at the top end of the circular ring (705), four fan-shaped filter plates (708) distributed in a circular array are fixedly provided in the rotating frame (706), a second motor (709) is fixedly provided on one side of the side plate (10), and the driving end of the second motor (709) is connected to the driving shaft (701) through a pulley transmission group.

5. A varnish dipping device for transformer coils as claimed in claim 2, characterized in that: The rotating synchronous reciprocating swing assembly (8) comprises a lifting ring (801) and a lifting rod (802). The lifting ring (801) is slidably sleeved on the outer wall of the sliding shaft (702). The lifting rod (802) is inserted through the lifting frame (5) and is close to the sliding shaft (702). The bottom end of the lifting rod (802) is fixedly provided with an adjusting wheel (803) used in conjunction with the lifting ring (801), and the adjusting wheel (803) is slidably connected to the lifting ring (801). One side of the bottom end of the lifting ring (801) is rotatably provided with a fixed shaft (704). ) is used in conjunction with an adjusting rod (804), and the other end of the adjusting rod (804) is rotatably connected to the top of the rotating frame (706), a fixed bracket (805) is fixedly provided on one side of the top of the lifting frame (5), a driven shaft (806) is rotatably provided on the fixed bracket (805) close to the lifting rod (802), a rotating rod (807) is fixedly provided on the end of the driven shaft (806), and a connecting rod (808) is rotatably provided on the other end of the rotating rod (807), and the other end of the connecting rod (808) is rotatably connected to the top of the lifting rod (802).

6. A varnish dipping device for transformer coils as claimed in claim 2, characterized in that: The coil positioning assembly (9) comprises four cross fixing frames (901) arranged in an annular array, the four cross fixing frames (901) are respectively fixedly mounted on the bottom end of the circular filter plate (707), four slide rails (902) arranged in an annular array are fixedly arranged on the top end of the cross fixing frame (901), sliders (903) are slidably arranged on the four slide rails (902), a limiting shaft (904) is fixedly arranged on the top end of the slider (903), a rotating shaft (905) is rotatably arranged in the middle of the cross fixing frame (901), and the rotating shaft (905) is rotatably arranged in the middle of the cross fixing frame (901). A rotating plate (906) is fixedly provided at the top of the shaft (905), and arc-shaped rods (907) are rotatably provided at the four corners of the top of the rotating plate (906), and the other end of the arc-shaped rod (907) is rotatably connected to the corresponding slider (903). A rotating ring (909) is rotatably sleeved on the outer wall of the circular ring (705), and a swing rod (908) is fixedly provided at the bottom of the rotating shaft (905). A transmission rod (910) is rotatably provided at the other end of the swing rod (908), and the other end of the transmission rod (910) is rotatably connected to the rotating ring (909).

7. A varnish dipping device for transformer coils as claimed in claim 5, characterized in that: A driving shaft (809) is rotatably provided on the other side of the fixed bracket (805), a driving wheel (810) is fixedly sleeved on the outer wall of the driving shaft (809), a driven wheel (811) is sleeved on the outer wall of the driven shaft (806), and the driven wheel (811) is meshedly connected with the driving wheel (810), and a rotating shaft (812) is rotatably provided on the side of the lifting frame (5) close to the driving shaft (809), and the rotating shaft (812) is connected to the sliding shaft (702) through a synchronous wheel transmission group, and the rotating shaft (812) is connected to the driving shaft (809) through a bevel gear group.

8. A varnish dipping device for transformer coils as claimed in claim 6, characterized in that: A fixed cylinder (911) is fixedly provided at the top end of one side of the rotating ring (909), a plug (912) is inserted through the fixed cylinder (911), and the plug (912) passes through the rotating ring (909), a circular plate (913) is fixedly sleeved on the outer wall of the plug (912), a spring (914) is sleeved on the outer wall of the plug (912), and two ends of the spring (914) are respectively fixedly connected to the circular plate (913) and the inner wall of the fixed cylinder (911), and a plurality of slots (915) for use with the plug (912) are provided at the bottom end of the rotating frame (706).

9. A varnish dipping device for transformer coils as claimed in claim 8, characterized in that: The rotating ring (909) is provided with four arc-shaped grooves (916) distributed in a circular array, and a guide wheel (917) is rotatably provided at the bottom end of the cross fixing frame (901), and the guide wheel (917) slides in the corresponding arc-shaped groove (916).

10. A method for using a transformer coil and a paint dipping device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, a group of four transformer coils to be immersed in liquid are placed on the coil positioning assembly (9) in sequence, and the coil positioning assembly (9) drives four groups of limiting shafts (904) to move centripetally synchronously and fit with the inner wall of the transformer coil to limit the transformer coil; S2, driving the paint immersion rotating stirring assembly (7) to descend through the screw lifting assembly (6) so that the transformer coil is completely immersed in the paint liquid in the paint immersion tank (2), and then driving the rotating frame (706) and the transformer coil to rotate in the paint liquid through the immersion rotating stirring assembly to stir the paint liquid; S3, the rotating frame (706) rotates while driving the rotating synchronous reciprocating swing assembly (8) to operate, and the rotating frame (706) is driven to rotate and swing periodically by the rotating synchronous reciprocating swing assembly (8), so that the paint liquid has a greater shearing effect on the coil surface during the flow process, which helps the paint liquid to penetrate and promotes the discharge of bubbles; S4, after the paint dipping is completed, the transformer coil is driven to rise and separate from the paint liquid through the screw lifting assembly (6), and the paint dipping rotating stirring assembly (7) is controlled to start, and the transformer coil is driven to swing while the rotating frame (706) rotates through the paint dipping rotating stirring assembly (7) and the rotating synchronous reciprocating swing assembly (8) to promote the dripping of the paint liquid; S5. After the paint liquid has finished dripping, the transformer coil is driven to rise to the top through the screw lifting assembly (6), and the coil positioning assembly (9) is controlled to stop limiting the coil, and finally the transformer coil is taken out in sequence.

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