A wire changer applicable to continuous coil reverse segment winding and a winding method thereof

Abstract

A wire changer applicable to continuous coil reverse-segment winding and its winding method provided by the present invention include: an insulating spacer block, which is a stepped structure with at least one layer; the inner side of the insulating spacer block is attached to the outer circumference of the paper tube of the vertical winding machine; when there are multiple steps on the insulating spacer block, the height of each step of the insulating spacer block decreases in sequence from the inner side to the outer side of the insulating spacer block; the width of each step of the insulating spacer block is consistent with the radial length of the wire to be wound, and the height of each step of the insulating spacer block is consistent with the axial height of the wire to be wound, and each step of the insulating spacer block is used to place one turn of the coil. Using the wire changer of the present invention saves the steps of reverse-segment wire turning, its operation is very simple, reduces the number of coil winding personnel, can effectively reduce the winding working hours by about 20%, reduces the manufacturing cost and enhances the insulation performance of the coil.

Description

Technical Field

[0001] The present invention relates to the technical field of power transformer continuous coil processing equipment, and specifically to a wire changer applicable to the reverse segment winding of continuous coils and its winding method. Background Art

[0002] During the production of medium and large power transformers with a voltage of 110 kV or above, especially during the winding process of the continuous coils of transformers, strict requirements are imposed on the radial dimensions and axial dimensions of the coils. The quality of the control of the radial dimensions and axial dimensions of the coils (especially the reverse segments of continuous coils) directly affects the magnitude of the later short-circuit impedance of the transformer, whether the DC resistance is balanced, and whether there is circulating current inside the coil, that is, it affects the service performance and service life of the transformer. Therefore, it is very necessary to design a wire changer applicable to the reverse segment winding of continuous coils to meet the winding requirements of the reverse segments of continuous coils of transformers, so as to ensure the overall quality and normal operation requirements of transformers.

[0003] The existing reverse segment winding method requires position changing and wire turning. During the position changing and wire turning process, improper winding is likely to scratch the coil, causing damage to the turn insulation and resulting in turn-to-turn short circuit. It is also likely to cause secondary deviation and affect the impedance voltage, presenting potential safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problems of the existing reverse segment winding method that requires position changing and wire turning, where improper winding during the process is likely to scratch the coil, causing damage to the turn insulation and resulting in turn-to-turn short circuit, and is also likely to cause secondary deviation, affecting the impedance voltage, and presenting potential safety hazards. The present invention provides a wire changer applicable to the reverse segment winding of continuous coils and its winding method.

[0005] To achieve the above purpose, the present invention provides a wire changer applicable to the reverse segment winding of continuous coils, including: an insulating cushion block, the insulating cushion block being a stepped structure with at least one layer; the width of each step of the insulating cushion block is consistent with the radial length of the wire to be wound, the height of each step of the insulating cushion block is consistent with the axial height of the wire to be wound, each step of the insulating cushion block is used to place one turn of the coil, and the inner side of the insulating cushion block is attached to the outer circumference of the paper tube of the vertical winding machine; when the insulating cushion block has multiple steps, the height of each step of the insulating cushion block decreases sequentially from the inner side to the outer side of the insulating cushion block.

[0006] As an implementable mode, it further includes an insulating sector-shaped support plate, on the upper surface of which a plurality of the insulating pads are fixed. The inner sides of the insulating pads are closely adjacent to the inner diameter side of the insulating sector-shaped support plate. The radian of the inner diameter side of the insulating sector-shaped support plate is consistent with the outer arc radian of the paper tube of the vertical winding machine. The length of the part of the insulating sector-shaped support plate outside the outer sides of the insulating pads is used for placing one turn of the coil.

[0007] As an implementable mode, the insulating pads are sector-shaped. The inner radian of the insulating pads is consistent with the outer circle radian of the paper tube of the vertical winding machine. The outer diameter side radian of each layer step of the insulating pads is consistent with the inner diameter of the coil placed on this step.

[0008] As an implementable mode, there are a plurality of the insulating pads.

[0009] As an implementable mode, the plurality of insulating pads are arranged in an arc shape, and the plane where the plurality of insulating pads are located is perpendicular to the paper tube of the vertical winding machine.

[0010] As an implementable mode, taking the inner diameter of the insulating sector-shaped support plate as the inner diameter of the coil to be wound, when the inner diameter range of the coil to be wound is 600 mm to 1800 mm, the number range of the wire changers is 4 to 8.

[0011] As an implementable mode, when the number of turns of the wire to be wound is n, the insulating pads are provided with n steps.

[0012] As an implementable mode, when the number of turns of the wire to be wound is n + 1, the insulating pads are provided with n steps.

[0013] The present invention also provides a winding method for the wire changer applicable to the continuous coil reverse segment winding according to the above, including: after the positive segment winding of the coil is completed, closely adhere the inner side of the insulating pads to the paper tube of the vertical winding machine, and evenly place them on the wound positive segment coil. Wind the wire directly on each step of the wire changer in the direction from the outer side of the insulating pads to the inner side of the insulating pads. After winding to the specified number of turns, lift and remove the wire changer, and put down and tighten the reverse segment coil.

[0014] The present invention also provides a winding method for a wire changer applicable to the reverse segment winding of a continuous coil, including: after the forward segment winding of the coil is completed, the inner diameter side of the insulating fan-shaped support plate is closely attached to the paper tube of the vertical winding machine, and it is evenly placed on the completed forward segment coil. The wire is wound in sequence from the insulating fan-shaped support plate to the inner side of the insulating spacer on the part outside the insulating spacer of the insulating fan-shaped support plate and each step of the insulating spacer. After winding to the specified number of turns, the wire changer is lifted and removed, and the reverse segment coil is placed down and tightened.

[0015] Advantages of the present invention:

[0016] A wire changer applicable to the reverse segment winding of a continuous coil and its manufacturing method provided by the present invention include: an insulating spacer and an insulating fan-shaped support plate. After the forward segment winding of the coil is completed, the inner diameter side of the insulating fan-shaped support plate is closely attached to the paper tube of the vertical winding machine, and it is evenly placed on the completed forward segment coil. The wire is wound in sequence from the insulating fan-shaped support plate to the inner side of the insulating spacer on the part outside the insulating spacer of the insulating fan-shaped support plate and each step of the insulating spacer; the height of each step of the insulating spacer decreases in sequence from the inner side of the insulating spacer to the outer side of the insulating spacer; the width of each step of the insulating spacer is consistent with the radial length of the wire to be wound, and the height of each step of the insulating spacer is consistent with the axial height of the wire to be wound; after winding to the specified number of turns, the wire changer is lifted, and the reverse segment coil is placed down and tightened. Using the wire changer of the present invention saves the step of turning the wire in the reverse segment, its operation is very simple, reduces the coil winding personnel, can effectively reduce the winding working hours by about 20%, reduces the manufacturing cost, and enhances the insulation performance of the coil. Brief Description of the Drawings

[0017] Figure 1 It is a schematic side view structure diagram of the commutator of the present invention;

[0018] Figure 2 It is a schematic top view structure diagram of the commutator of the present invention;

[0019] Figure 3 It is a schematic diagram of the winding process when using the wire changer of the present invention;

[0020] Figure 4 It is a schematic diagram of the result after removing the wire changer of the present invention;

[0021] Figure 5 It is a schematic top view structure diagram of the fan-shaped commutator of the present invention. Detailed Embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1:

[0024] Refer to Figures 1-2 , in this embodiment, a wire changer applicable to continuous coil reverse segment winding is first provided, including: an insulating spacer block 100, which is made of wood, and the insulating spacer block 100 is provided with two layers of steps; the inner side 103 of the insulating spacer block is attached to the outer circumference 310 of the paper tube of the vertical winding machine; the height of each layer of steps of the insulating spacer block 100 decreases successively from the inner side 103 of the insulating spacer block to the outer side 106 of the insulating spacer block; the width 104 of each layer of steps of the insulating spacer block is consistent with the length of the radial side 1 of the wire to be wound, the height 105 of each layer of steps of the insulating spacer block 100 is consistent with the height of the axial side 2 of the wire to be wound, and each layer of steps of the insulating spacer block 100 is used to place one turn of the coil. Among them, the radial direction is along the radius direction of the coil, and the axial direction is along the height direction of the coil.

[0025] In this embodiment, the wire changer is an insulating spacer block with two layers of steps and can wind two turns of wires.

[0026] The width 104 of each layer of steps of the insulating spacer block is consistent with the length of the radial side 1 of the wire to be wound, and the height 105 of each layer of steps of the insulating spacer block 100 is consistent with the height of the axial side 2 of the wire to be wound. Specifically, it includes: the steps of the insulating spacer block are made according to the wire size, allowing a deviation within plus or minus 0.5 mm. A deviation within plus or minus 0.5 mm has no impact on the operation of this wire changer. However, if it exceeds plus or minus 0.5 mm, it will affect the insulation of the wire being broken and the practicality of the wire changer operation.

[0027] As Figure 2 shown, 16 of the insulating spacer blocks 100 are evenly placed around the outer circumference of the paper tube of the vertical winding machine. The 16 insulating spacer blocks form an insulating spacer block mechanism. The insulating spacer block mechanism is arc-shaped. The inner diameter side of the insulating spacer block mechanism is attached to the paper tube of the vertical winding machine. The plane where the arc-shaped insulating spacer block mechanism is located is perpendicular to the paper tube of the vertical winding machine; the width 109 of the insulating spacer block 100 is 50 mm, and the side of the insulating spacer block attached to the paper tube of the vertical winding machine, that is, the inner side surface of the insulating spacer block, is a plane.

[0028] Embodiment 2:

[0029] This embodiment provides a wire changer applicable to continuous coil reverse segment winding. Refer to Figures 3-4 , including: an insulating spacer block 100, which is made of wood. The insulating spacer block 100 has three layers of steps. The inner side 103 of the insulating spacer block is attached to the outer circumference 310 of the paper tube of the vertical winding machine. The height of each layer of steps of the insulating spacer block 100 decreases in sequence from the inner side 103 to the outer side 106 of the insulating spacer block. The width 104 of each layer of steps of the insulating spacer block is consistent with the length of the radial side 1 of the wire to be wound. The height 105 of each layer of steps of the insulating spacer block 100 is consistent with the height of the axial side 2 of the wire to be wound. Each layer of steps of the insulating spacer block 100 is used to place one turn of the coil. Among them, the radial direction is the direction along the radius of the coil, and the axial direction is the direction along the height of the coil.

[0030] In this embodiment, the wire changer is an insulating spacer block with three layers of steps and can wind three turns of wires.

[0031] The width 104 of each layer of steps of the insulating spacer block is consistent with the length of the radial side 1 of the wire to be wound. The height 105 of each layer of steps of the insulating spacer block 100 is consistent with the height of the axial side 2 of the wire to be wound. Specifically, it includes: the steps of the insulating spacer block are made according to the wire size, allowing a deviation within plus or minus 0.5 mm. A deviation within plus or minus 0.5 mm has no impact on the operation of this wire changer. However, if it exceeds plus or minus 0.5 mm, it will affect the wire breaking through the insulation and the practicality of the wire changer operation.

[0032] Place the wire changer according to the position shown in Figure 2 . That is, evenly arrange 16 of the insulating spacer blocks 100 around the outer circumference of the paper tube of the vertical winding machine. The 16 insulating spacer blocks form an insulating spacer block mechanism. The insulating spacer block mechanism is arc-shaped. The inner diameter side of the insulating spacer block mechanism is attached to the paper tube of the vertical winding machine. The plane where the arc-shaped insulating spacer block mechanism is located is perpendicular to the paper tube of the vertical winding machine. The width 109 of the insulating spacer block 100 is 50 mm. The side of the insulating spacer block attached to the paper tube of the vertical winding machine, that is, the inner side surface of the insulating spacer block, is a plane.

[0033] Embodiment Three:

[0034] This embodiment provides a wire changer applicable to continuous coil reverse-segment winding, including: an insulating spacer block 100, which is made of wood. The insulating spacer block 100 has two layers of steps, is fan-shaped, and the inner side 103 of the insulating spacer block is attached to the outer circumference 310 of the paper tube of the vertical winding machine; the height of each layer of steps of the insulating spacer block 100 decreases successively from the inner side 103 to the outer side 106 of the insulating spacer block; the width 104 of each layer of steps of the insulating spacer block is consistent with the length of the radial side 1 of the wire to be wound, and the height 105 of each layer of steps of the insulating spacer block 100 is consistent with the height of the axial side 2 of the wire to be wound. Each layer of steps of the insulating spacer block 100 is used to place one turn of the coil; the insulating spacer block 100 is fan-shaped, and the radian of the inner side 103 of the insulating spacer block is consistent with the radian of the outer circumference 310 of the paper tube of the vertical winding machine. The outer diameter side radian of each layer of steps of the insulating spacer block is consistent with the inner diameter of the coil placed on this step. Here, the radial direction is along the radius direction of the coil, and the axial direction is along the height direction of the coil.

[0035] In this embodiment, the wire changer is an insulating spacer block with two layers of steps and can wind two turns of wire.

[0036] The width 104 of each layer of steps of the insulating spacer block is consistent with the length of the radial side 1 of the wire to be wound, and the height 105 of each layer of steps of the insulating spacer block 100 is consistent with the height of the axial side 2 of the wire to be wound. Specifically, it includes: the steps of the insulating spacer block are made according to the wire size, allowing a deviation within plus or minus 0.5 mm. A deviation within plus or minus 0.5 mm has no influence on the operation of this wire changer. However, if it exceeds plus or minus 0.5 mm, it will affect the wire breaking through the insulation and the practicality of the wire changer operation.

[0037] Place the wire changer according to the position as Figure 5 shown, that is, evenly surround and place 4 insulating spacer blocks 100 on the outer circumference of the paper tube of the vertical winding machine. The 4 insulating spacer blocks form an insulating spacer block mechanism. The insulating spacer block mechanism is arc-shaped. The inner diameter side 121 of the insulating spacer block mechanism is attached to the paper tube of the vertical winding machine. The plane where the arc-shaped insulating spacer block mechanism is located is perpendicular to the paper tube of the vertical winding machine; the radian of the inner diameter side 121 of each insulating spacer block is 75 degrees.

[0038] Example 4:

[0039] Based on Example 1, this embodiment provides a wire changer applicable to continuous coil reverse-segment winding. Refer to Figures 1-2, further comprising: an insulating sector-shaped support plate 200, the insulating sector-shaped support plate 200 is fixed under the insulating spacer 100, the inner side 103 of the insulating spacer abuts against the inner diameter side 107 of the insulating sector-shaped support plate, the radian of the inner diameter side 107 of the insulating sector-shaped support plate is consistent with the radian of the outer circle 310 of the paper tube of the vertical winding machine 300, and the length 108 of the part of the insulating sector-shaped support plate located outside the outer side of the insulating spacer is used to place one turn of the coil.

[0040] The insulating sector-shaped support plate 200 is made of cardboard, the thickness of the insulating sector-shaped support plate 200 is 5 mm, and the length of the side edge 110 of the insulating sector-shaped support plate can be set to (the outer diameter dimension of the wound coil minus the inner diameter dimension of the wound coil) divided by 2, which is not limited here; the fixing method of the insulating spacer and the insulating sector-shaped support plate includes bonding.

[0041] In this embodiment, a wire changer with the insulating sector-shaped support plate 200 fixed on the insulating spacer 100 is used. Among them, the insulating spacer 100 is provided with 2 layers of steps, and the length 108 of the part of the insulating sector-shaped support plate located outside the outer side of the insulating spacer is used to place one turn of the coil. Therefore, the wire changer of this embodiment can wind 3 turns of wires.

[0042] When the inner diameter range of the coil to be wound is 600 mm, the number of wire changers that can be used is 4; when the inner diameter range of the coil to be wound is 1800 mm, the number of wire changers that can be selected to use is 8, specifically including:

[0043] As Figure 2 shown, the diameter of the paper tube 300 of the vertical winding machine is 600 mm. Four insulating spacers 100 are evenly fixed on each insulating sector-shaped support plate 200, and the four insulating sector-shaped support plates 200 fixed with the insulating spacers 100 are evenly placed around the outer circle 310 of the paper tube of the vertical winding machine. The plane formed by the four insulating sector-shaped support plates is perpendicular to the paper tube of the vertical winding machine. The fixing method of the insulating sector-shaped support plate 200 and the insulating spacer 100 includes bonding. Specifically, the first center line 111 and the second center line 112 are the center lines of two adjacent insulating spacers 100 on the same insulating sector-shaped support plate respectively. The radian between the first center line 111 and the second center line 112 is 15 degrees, the radian between the side edges 110 of the adjacent insulating sector-shaped support plates is 15 degrees, and the radian between the first center line 111 and the side edge 110 of the insulating sector-shaped support plate is 15 degrees.

[0044] As Figure 2As shown, the coil spacers 113 are evenly distributed on the outer circumference 310 of the paper tube of the vertical winding machine. The insulating pads 100 correspond to the coil spacers 113 one by one. The coil spacers 113 serve as the interlayer support and insulation of the winding, forming a heat dissipation oil duct or air duct.

[0045] Embodiment 5:

[0046] Based on Embodiment 2, this embodiment provides a wire changer applicable to the reverse segment winding of a continuous coil. Refer to Figures 1-4 , and further includes: an insulating sector-shaped support plate 200. The insulating sector-shaped support plate 200 is fixed under the insulating pad 100. The inner side 103 of the insulating pad abuts against the inner diameter side 107 of the insulating sector-shaped support plate. The radian of the inner diameter side 107 of the insulating sector-shaped support plate is consistent with the radian of the outer circumference 310 of the paper tube of the vertical winding machine 300. The length 108 of the part of the insulating sector-shaped support plate located outside the outer side of the insulating pad is used to place one turn of the coil.

[0047] The insulating sector-shaped support plate 200 is made of cardboard. The thickness of the insulating sector-shaped support plate 200 is 5 mm. The length of the side edge 110 of the insulating sector-shaped support plate can be set to (the outer diameter dimension of the wound coil minus the inner diameter dimension of the wound coil) divided by 2, which is not limited here; the fixing method of the insulating pad and the insulating sector-shaped support plate includes bonding.

[0048] In this embodiment, the wire changer used is the one with the insulating sector-shaped support plate 200 fixed under the insulating pad 100. Among them, the insulating pad 100 is provided with three steps. The length 108 of the part of the insulating sector-shaped support plate located outside the outer side of the insulating pad is used to place one turn of the coil. Therefore, the wire changer of this embodiment can wind four turns of wires.

[0049] When the inner diameter range of the coil to be wound is 600 mm, the number of wire changers that can be used is 4; when the inner diameter range of the coil to be wound is 1800 mm, the number of wire changers that can be selected to use is 8, specifically including:

[0050] The diameter of the paper tube 300 of the vertical winding machine is 600 mm. Place the wire changer according to Figure 2Place them as shown, that is, evenly fix 4 of the insulating pads 100 on each of the insulating sector-shaped supporting plates 200, and then evenly surround the outer circumference 310 of the paper tube of the vertical winding machine with the 4 insulating sector-shaped supporting plates. The plane formed by the 4 insulating sector-shaped supporting plates is perpendicular to the paper tube of the vertical winding machine. The fixing method of the insulating sector-shaped supporting plate 200 and the insulating pad 100 includes bonding. Specifically, the first center line 111 and the second center line 112 are respectively the center lines of two adjacent insulating pads 100 on the same insulating sector-shaped supporting plate. The radian between the first center line 111 and the second center line 112 is 15 degrees. The radian between the side edges 110 of adjacent insulating sector-shaped supporting plates is 15 degrees. The radian between the first center line 111 and the side edge 110 of the insulating sector-shaped supporting plate is 15 degrees.

[0051] As Figure 2 shown, the coil spacers 113 are evenly distributed on the outer circumference 310 of the paper tube of the vertical winding machine. The insulating pads 100 correspond to the coil spacers 113 one by one. The coil spacers 113 serve as the interlayer support and insulation of the winding, forming a heat dissipation oil duct or air duct.

[0052] Based on the same inventive concept, an embodiment of the present invention further provides a manufacturing method for a wire changer applicable to the reverse segment winding of a continuous coil, that is, the winding method when using the insulating pad as the wire changer. Regarding the structure and performance of the prepared wire changer, reference can be made to the foregoing relevant descriptions, and repeated parts will not be elaborated. The method includes the following steps:

[0053] After the positive segment winding of the coil is completed, press the inner side 103 of the insulating pad tightly against the paper tube 310 of the vertical winding machine, and evenly place it on the wound positive segment coil. Wind the wire from the outer side 106 to the inner side 103 of the insulating pad successively on each step of the insulating pad 100. After winding to the specified number of turns, lift and remove the wire changer, and put down and tighten the reverse segment coil.

[0054] Based on the same inventive concept, an embodiment of the present invention further provides a manufacturing method for a wire changer applicable to the reverse segment winding of a continuous coil, that is, the winding method when using the wire changer with the insulating sector-shaped supporting plate fixed under the insulating pad. Regarding the structure and performance of the prepared wire changer, reference can be made to the foregoing relevant descriptions, and repeated parts will not be elaborated. The method includes the following steps:

[0055] After the positive segment of the coil is wound, press the inner diameter side 107 of the insulating sector-shaped support plate tightly against the paper tube 310 of the vertical winding machine, and evenly place it on the wound positive segment coil. Wind the wire from the insulating sector-shaped support plate to the inner side 103 of the insulating spacer block successively on the part of the insulating sector-shaped support plate outside the outer side of the insulating spacer block and each step of the insulating spacer block 100. After winding to the specified number of turns, lift and remove the wire changer, and lower and tighten the negative segment coil.

[0056] As Figure 3 shown, the wire changer includes the insulating spacer block 100 and the insulating sector-shaped support plate 200. The insulating spacer block has 3 layers of steps, and the number of turns of the wire to be wound is 4 turns, namely the first turn of wire 40, the second turn of wire 30, the third turn of wire 20, and the fourth turn of wire 10. First, wind the fourth turn of wire 10 on the part of the insulating sector-shaped support plate outside the outer side 106 of the insulating spacer block, then wind the third turn of wire 20 on the lowest layer step of the outer side 106 of the insulating spacer block, then wind the wire to be wound successively from the outer side 106 to the inner side 103 of the insulating spacer block, and finally wind the first turn of wire 40 on the highest layer step of the inner side 103 of the insulating spacer block, that is, the winding is completed.

[0057] After the negative segment wire is wound, lift and remove the wire changer, and finally lower and tighten the negative segment coil, that is, it is completed. Just as Figure 4 shown, one axial side 2 of the fourth turn of wire 10 is close to the outer circumference of the paper tube of the vertical winding machine 310, one axial side 2 of the third turn of wire 20 is close to the other axial side 2 of the fourth turn of wire 10, one axial side 2 of the second turn of wire 30 is close to the other axial side 2 of the third turn of wire 20, and one axial side 2 of the first turn of wire 40 is close to the other axial side 2 of the second turn of wire 30.

[0058] A wire changer applicable to continuous coil reverse segment winding and a manufacturing method thereof provided by the present invention include an insulating spacer block and an insulating sector-shaped supporting plate. After the forward segment winding of the coil is completed, the inner diameter side of the wire changer is closely attached to the paper tube of the vertical winding machine and evenly placed on the completed forward segment coil. The wire is wound on each step of the insulating sector-shaped supporting plate 200 and the insulating spacer block 100 in sequence from the insulating sector-shaped supporting plate 200 to the inner side 103 of the insulating spacer block. The height of each step of the insulating spacer block 100 decreases in sequence from the inner side 103 to the outer side 106 of the insulating spacer block. The width 104 of each step of the insulating spacer block is consistent with the length of the radial side 1 of the wire to be wound, and the height 105 of each step of the insulating spacer block is consistent with the height of the axial side 2 of the wire to be wound. After winding to the specified number of turns, the wire changer is lifted, and the reverse segment coil is placed down and tightened. Using the wire changer of the present invention saves the steps of reverse segment wire turning, has very simple operability, reduces the coil winding personnel, can effectively reduce the winding working hours by about 20%, reduces the manufacturing cost, and enhances the insulation performance of the coil.

[0059] Although the present invention has been disclosed above with preferred embodiments, it is not used to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A wire changer suitable for continuous coil reverse winding, characterized in that: include: An insulating spacer having at least one layer of stepped structure; the width of each step of the insulating spacer is consistent with the radial length of the wire to be wound, the height of each step of the insulating spacer is consistent with the axial height of the wire to be wound, each step of the insulating spacer is used to place a turn of the coil, and the inner side of the insulating spacer is in contact with the outer circumference of the paper cylinder of the vertical winding machine; When the insulating spacer has multiple steps, the height of each step of the insulating spacer decreases from the inner side of the insulating spacer to the outer side of the insulating spacer; The coil stays are evenly distributed on the outer circumference of the paper drum of the vertical winding machine, and the insulating spacers correspond one to one to the coil stays; When the number of turns of the wire to be wound is n, the insulating spacer is provided with n steps.

2. A wire changer suitable for continuous coil reverse winding according to claim 1, characterized in that: It also includes an insulating fan-shaped support plate, on the upper surface of which a plurality of insulating pads are fixed, the inner side of the insulating pads is close to the inner diameter side of the insulating fan-shaped support plate, the curvature of the inner diameter side of the insulating fan-shaped support plate is consistent with the curvature of the outer circle of the paper tube of the vertical winding machine, and the length of the insulating fan-shaped support plate outside the outer side of the insulating pads is used to place one turn of the coil.

3. A wire changer suitable for continuous coil reverse winding according to claim 1, characterized in that: The insulating spacer is fan-shaped, and the inner curvature of the insulating spacer is consistent with the curvature of the outer circle of the paper cylinder of the vertical winding machine. The outer diameter curvature of each step of the insulating spacer is consistent with the inner diameter of the coil placed on the step.

4. A wire changer suitable for continuous coil reverse winding according to any one of claims 1 to 3, characterized in that: There are multiple insulating spacers.

5. A wire changer suitable for continuous coil reverse winding according to claim 4, characterized in that: The multiple insulating spacers are arranged in an arc shape, and the plane where the multiple insulating spacers are located is perpendicular to the paper drum of the vertical winding machine.

6. The wire changer suitable for continuous coil reverse winding according to claim 2, characterized in that: The inner diameter of the insulating sector-shaped support plate is used as the inner diameter of the coil to be wound. When the inner diameter range of the coil to be wound is 600mm~1800mm, the number of the wire changers ranges from 4 to 8.

7. The wire changer suitable for continuous coil reverse winding according to claim 2, characterized in that: When the number of turns of the wire to be wound is n+1, the insulating spacer is provided with n steps.

8. A winding method for a wire changer suitable for continuous coil reverse winding according to claim 1 or 3, characterized in that: After the positive section of the coil is wound, the inner side of the insulating spacer is pressed against the paper drum of the vertical winding machine and evenly placed on the wound positive section coil. The wire is wound on each step of the insulating spacer from the outside to the inside of the insulating spacer in sequence. After winding to the specified number of turns, lift and remove the wire changer, and lower and tighten the reverse section coil.

9. The winding method of a wire changer suitable for continuous coil reverse winding according to claim 2, characterized in that: After the positive section of the coil is wound, the inner diameter side of the insulating fan-shaped support plate is pressed tightly against the paper drum of the vertical winding machine and evenly placed on the wound positive section coil. The wire is wound from the insulating fan-shaped support plate to the inner side of the insulating spacer block in sequence on the part of the insulating fan-shaped support plate outside the outer side of the insulating spacer block and on each step of the insulating spacer block. After winding to the specified number of turns, lift and remove the wire changer, and lower and tighten the reverse section coil.

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