Method and device for winding foil coils for three-dimensional wound core transformers

Abstract

The present invention discloses a method and apparatus for winding foil coils for a solid wound core transformer, the method and apparatus including: a rotating module having through holes corresponding to the core legs, a gear plate and a raceway ring surrounding the through holes, the gear plate and the raceway ring fixedly connected by a fixing block; a drive unit having a drive end connected to the gear plate; and a plurality of supply modules movably connected to the rotating module, each having a supply cylinder and a tensioning device. The rotating module and the supply module enable the winding material wound on the supply cylinder to be stably and quickly transported out as the gear plate rotates, improving the supply stability and winding efficiency of the foil coil winding apparatus for a solid wound core transformer. The installation of the raceway ring and tensioning device prevents the supply cylinder from being displaced or dislocated during rotation, ensuring coil quality and increasing the degree of automation of foil coil winding for a solid wound core transformer.

Description

[Technical field]

[0001] The present invention relates to the technical field of transformer production, and in particular to a method and apparatus for winding foil coils of a space-wound core transformer. [Background technology]

[0002] The solid wound core transformer is an energy-saving power transformer, which is a creative innovation of the laminated magnetic circuit structure and three-phase arrangement of traditional power transformers, and further optimizes product performance. Due to the structural characteristics of the solid wound core, it is not possible to use the coil set fitting method similar to the laminated core structure (i.e., the production process of fitting the coil to the core after completing the coil winding), and it is necessary to wind the coil set on the core using a winding machine specially manufactured for different products. The current winding method for foil-type coil sets with a solid wound core is to specially manufacture a winding machine according to the dimensions of the core and coil set of different products, and then use the winding machine to wind the foil-type coil set on the core. This winding method has problems such as high input of machine tools and equipment, long production period, reduced production efficiency, and many production processes, and also generates an air gap between the foil-type coil set and the core, which affects the heat dissipation performance and short circuit prevention ability of the transformer. Summary of the Invention [Problem to be solved by the invention]

[0003] In order to solve the above problems, the present invention aims to provide a method and apparatus for winding foil coils of a solid wound core transformer, so as to increase the degree of automation of the winding of foil coils of a solid wound core transformer, reduce production costs, and ensure the winding efficiency and coil quality of the solid wound core transformer. [Means for solving the problem]

[0004] The technical solutions utilized in the present invention to solve the problem are as follows:

[0005] In a first aspect of the present invention, the method includes the steps of: providing a three-dimensional wound core including a plurality of core legs; providing an insulating layer and installing the insulating layer on an outer wall of the core legs; providing a plurality of supply cylinders, each of which is wound with a foil conductor, an interlayer insulation, and an end insulation; fitting a rotating module to the outside of the insulating layer; installing the plurality of supply cylinders on the rotating module; and fixing one end of the foil conductor, the interlayer insulation, and the end insulation to the insulating layer. The method for winding a foil-type coil for a three-dimensional wound core transformer includes the steps of: installing an inner lead wire portion at one end of the foil conductor connected to the insulating layer; connecting and starting a drive unit, driving and rotating the rotating module using the drive unit, and further rotating the supply cylinder in conjunction with the supply cylinder around the core leg to wind the foil conductor, the interlayer insulation, and the end insulator as a whole around the outer wall of the insulating layer with the core leg as a central axis to form a coil body; and installing an outer lead wire portion at one end of the foil conductor away from the inner lead wire portion.

[0006] The above-mentioned foil coil winding method for a three-dimensional wound core transformer has at least the following useful effects: The rotating module is fitted on the outside of the core legs, and a number of supply cylinders are linked to wind the core legs, effectively reducing the gap between the coil body and the core legs, simplifying the manually controlled steps in the foil coil winding process, and reducing the amount of copper and insulating materials used to reduce the transformer production cost; the heat exchange efficiency between the coil body and the core legs is improved, the short circuit prevention ability of the transformer is improved, the deformation amount when the coil body is subjected to radial electric force is reduced, and the stability of the three-dimensional wound core transformer is improved; and the rotating module and supply cylinders can be applied to core legs of different sizes, effectively reducing the accumulation of winding machine tools and equipment, and shortening the production period of the three-dimensional wound core transformer.

[0007] Furthermore, the insulating layer is coated or painted on the outer wall of the core leg. This structure ensures that the insulating layer can adhere closely to the core leg, effectively reducing the gap between the coil body and the core leg and ensuring the insulation performance between the coil body and the core leg.

[0008] Furthermore, the gap between the inner wall of the coil body and the outer wall of the insulating layer is 0 to 1.5 mm. This structure improves the heat exchange efficiency between the coil body and the core legs, which helps to reduce the temperature rise of the coil body of the three-dimensional wound core transformer, and effectively reduces the gap between the coil body and the core legs, improving the short circuit prevention ability of the transformer, reducing the amount of deformation when the coil body is subjected to a radial electric force, and increasing the stability of the three-dimensional wound core transformer.

[0009] Furthermore, after the rotating module is fitted to the outside of the insulating layer, the horizontality of the rotating module is adjusted, the rotation smoothness of the rotating module is inspected, and the rotating module is fixed to the external equipment by a fixing block. By adjusting the horizontality of the rotating module and ensuring the rotation smoothness of the rotating module, it is possible to ensure that the winding material is wound around the core legs while maintaining a specific angle, and to avoid the influence of improper connection of the rotating module on the winding efficiency and coil quality of the three-dimensional wound core transformer.

[0010] Furthermore, the foil conductor, the interlayer insulation, and the end insulation are of single-layer structure, and the number of the supply cylinders on which the foil conductor, the interlayer insulation, and the end insulation are wound is adjusted according to the performance requirements of the coil body. In order to adapt to coil bodies with different performance requirements and to increase the production efficiency of three-dimensional wound core transformers, the winding thicknesses of the foil conductor, the interlayer insulation, and the end insulation can be flexibly changed by adjusting the number of supply cylinders.

[0011] Furthermore, the foil conductor, the interlayer insulation, and the end insulator have a multi-layer structure, and the number of layers of the foil conductor, the interlayer insulation, and the end insulator are adjusted according to the performance requirements of the coil body. In order to adapt to coil bodies with different performance requirements and to increase the production efficiency of three-dimensional wound core transformers, the winding thicknesses of the foil conductor, the interlayer insulation, and the end insulator can be flexibly changed by adjusting the number of layers of the foil conductor, the interlayer insulation, and the end insulator.

[0012] In a second aspect of the present invention, there is provided a foil coil winding device for a three-dimensional wound core transformer, the device including: a rotating module having through holes corresponding to the core legs, a gear plate and a raceway ring surrounding the through holes, the gear plate and the raceway ring fixedly connected by a fixing block; a drive device having a driving end connected to the gear plate; and a plurality of supply modules having a supply cylinder and a tensioning device movably connected to the rotating module.

[0013] The foil coil winding device for a three-dimensional wound core transformer has at least the following useful effects: The rotating module and the supplying module enable the winding material wound on the supplying cylinder to be stably and quickly transported out with the rotation of the gear plate, thereby improving the supply stability and winding efficiency of the foil coil winding device for a three-dimensional wound core transformer; The provision of a through hole makes it easy to fit the rotating module into the core leg and perform the winding operation on the core leg, thereby improving the winding efficiency of the three-dimensional wound core transformer; The provision of a raceway ring and a tensioning device prevents the supplying cylinder from being displaced or dislocated during the rotation process, ensures the quality of the coil, and improves the automation degree of the foil coil winding of a three-dimensional wound core transformer.

[0014] Furthermore, the tensioning device is located in the supply cylinder and includes a push rod, a spring and a friction element in close contact with the supply cylinder, and both ends of the spring are in close contact with the push rod and the friction element, respectively. By installing the spring and the friction element, when the supply cylinder rotates in conjunction with the gear plate, the friction element generates a friction force against the supply cylinder, which further makes the supply cylinder apply tension to the winding material, thereby avoiding the dislocation of the winding material and ensuring the supply stability of the foil coil winding device of the three-dimensional wound core transformer.

[0015] Furthermore, the supply cylinder has at least one end connected to the rotating module, and is inserted into the gear plate by a connecting part to be movably connected to the rotating module. The provision of the connecting part improves the connection stability and ease of removal between the supply cylinder and the rotating module, and ensures the stable supply of the foil coil winding device for the three-dimensional wound core transformer.

[0016] In addition, the gear plate and the raceway ring are both formed by combining multiple parts to form a ring shape, which makes it easier to install and remove the rotating module and improves the ease of use of the foil coil winding device for the three-dimensional wound core transformer.

[0017] The useful effects of the foil coil winding device for the solid wound core transformer are as follows: The rotating module and the supplying module allow the winding material wound on the supplying cylinder to be stably and quickly transported out with the rotation of the gear plate, so that the supply stability and winding efficiency of the foil coil winding device for the solid wound core transformer are improved. The through-holes make it easy to fit the rotating module into the core legs and perform the winding operation on the core legs, so that the winding efficiency of the solid wound core transformer is improved. The track ring and the tensioning device prevent the supplying cylinder from being displaced or dislocated during the rotation process, ensure the quality of the coil, and increase the automation degree of the foil coil winding of the solid wound core transformer. The spring and the friction element are installed, so that when the supplying cylinder rotates in conjunction with the gear plate, the friction element generates a friction force against the supplying cylinder, which further makes the supplying cylinder apply tension to the winding material, so as to avoid the dislocation of the winding material, and ensure the supply stability of the foil coil winding device for the solid wound core transformer.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. [Brief description of the drawings]

[0019] The above aspects, additional aspects and advantages of the present invention will become clearer and more easily understood from the following detailed description of the embodiments taken in conjunction with the accompanying drawings.

[0020] [Figure 1] 1 is a configuration diagram of a foil coil winding device for a solid wound core transformer according to an embodiment of the present invention. FIG. [Diagram 2] FIG. 11 is a configuration diagram of a foil coil winding device for a solid wound core transformer according to another embodiment of the present invention. [Diagram 3] FIG. 2 is a configuration diagram of the solid wound core and coil body in FIG. [Figure 4] FIG. 2 is an exploded view of the configuration of a rotation module in FIG. [Diagram 5] FIG. 2 is a side view of the supply module in FIG. [Figure 6]FIG. 2 is an exploded view of the supply module in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] In the following, the embodiments of the present invention will be described in detail, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout indicate the same or similar elements, or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and are only for interpreting the present invention, and should not be understood as limiting the present invention.

[0022] In the description of the present invention, the descriptions regarding orientation, such as the orientations or positional relationships indicated by "up," "down," "front," "back," "left," and "right," are orientations or positional relationships shown based on the drawings and are merely for the convenience and simplification of the description of the present invention. They do not state or imply that the devices or elements they refer to necessarily have a specific orientation or must be constructed or operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In the description of the present invention, "some" means one or more, "multiple" means two or more, "greater than", "smaller than", "exceeding", etc. should be understood to exclude the reference number, and "greater than", "less than", "within", etc. should be understood to include the reference number. References to "first", "second", etc. are merely for the purpose of distinguishing technical features, and should not be understood to indicate or imply relative importance or to imply the number of technical features presented, or to imply the context of the technical features presented.

[0024] In the description of the present invention, unless otherwise expressly limited, technical terms such as "installation", "mounting", and "connection" should be understood in a broad sense, and a person skilled in the art can understand the specific meaning of the above technical terms in the present invention according to the specific content of the technical solutions.

[0025] An embodiment of the present invention includes the steps of providing a solid wound core 400 including a plurality of core legs 410; providing an insulating layer 420 and installing the insulating layer 420 on an outer wall of the core legs 410; providing a plurality of supply cylinders 310, each of which is wound with a foil conductor 311, an interlayer insulation 312, and an end insulation 313; fitting a rotating module 100 to the outside of the insulating layer 420; installing the plurality of supply cylinders 310 on the rotating module 100; and fixing one end of the foil conductor 311, the interlayer insulation 312, and the end insulation 313 to the insulating layer 420. the step of winding the foil-type coil of the three-dimensional wound core transformer, the step of: connecting and starting a driving device, driving and rotating the rotation module (100) by the driving device, and further rotating the supply cylinder (310) around the core leg (410) to form a coil body (440) by winding the entire foil conductor (311), the interlayer insulator (312) and the end insulator (313) around the outer wall of the insulating layer (420) with the core leg (410) as a central axis; and installing an outer lead portion (450) at one end of the foil conductor (311) remote from the inner lead portion (430).

[0026] The rotating module 100 is fitted on the outside of the core legs 410, and the winding operation is performed on the core legs 410 by interlocking a number of supply cylinders 310, so that the gap between the coil body 440 and the core legs 410 is effectively reduced, and the manually controlled process of the foil coil winding process is simplified, and the amount of copper and insulating material used is reduced, thereby reducing the production cost of the transformer. In addition, the heat exchange efficiency between the coil body 440 and the core legs 410 is improved, the short circuit prevention ability of the transformer is improved, and the deformation amount when the coil body 440 is subjected to a radial electric force is reduced, thereby improving the stability of the solid wound core transformer. In addition, the rotating module 100 and the supply cylinders 310 can be applied to the core legs 410 of different sizes, which effectively reduces the accumulation of winding machine tools and equipment, and shortens the production period of the solid wound core transformer.

[0027] In another embodiment, the insulating layer 420 is coated or painted on the outer wall of the core leg 410. This structure ensures that the insulating layer 420 can adhere closely to the core leg 410, effectively reducing the gap between the coil body 440 and the core leg 410, and ensuring the insulation performance between the coil body 440 and the core leg 410.

[0028] In another embodiment, the gap between the inner wall of the coil body 440 and the outer wall of the insulating layer 420 is 0 to 1.5 mm. This structure improves the heat exchange efficiency between the coil body 440 and the core legs 410, which helps to reduce the temperature rise of the coil body 440 of the three-dimensional wound core transformer, and effectively reduces the gap between the coil body 440 and the core legs 410, improving the short-circuit prevention ability of the transformer, reducing the amount of deformation when the coil body 440 is subjected to a radial electric force, and increasing the stability of the three-dimensional wound core transformer. In addition, such a three-dimensional wound core transformer structure has a very strong short-circuit prevention ability, and does not need to fill a support member between the core legs 410 and the coil body 440, which not only simplifies the production process but also saves material costs.

[0029] In another embodiment, the rotating module 100 is fitted outside the insulating layer 420, and then the horizontality of the rotating module 100 is adjusted, the smoothness of rotation of the rotating module 100 is inspected, and the rotating module 100 is fixed to the external equipment by the fixing block 140. By adjusting the horizontality of the rotating module 100 and ensuring the smoothness of rotation of the rotating module 100, it is possible to ensure that the winding material is wound around the core legs 410 while maintaining a specific angle, and to avoid the winding efficiency and coil quality of the three-dimensional wound core transformer being affected by improper connection of the rotating module 100. In this embodiment, in order to facilitate the positioning and mounting of the rotating module 100 to the external equipment, the fixing block 140 is provided with a mounting portion 141 for connection to an external device.

[0030] In another embodiment, foil conductor 311, interlayer insulation 312, and end insulation 313 have a single layer structure, and the number of supply cylinders 310 on which foil conductor 311, interlayer insulation 312, and end insulation 313 are wound is adjusted according to the performance requirements of coil body 440. In order to accommodate coil bodies 440 with different performance requirements and to improve the production efficiency of three-dimensional wound core transformers, the winding thickness of foil conductor 311, interlayer insulation 312, and end insulation 313 can be flexibly changed by adjusting the number of supply cylinders 310.

[0031] In another embodiment, foil conductor 311, interlayer insulation 312, and end insulation 313 have a multi-layer structure, and the number of layers of foil conductor 311, interlayer insulation 312, and end insulation 313 are adjusted according to the performance requirements of coil body 440. In order to adapt to coil bodies 440 with different performance requirements and to increase the production efficiency of three-dimensional wound core transformers, the winding thicknesses of foil conductor 311, interlayer insulation 312, and end insulation 313 can be flexibly changed by adjusting the number of layers of foil conductor 311, interlayer insulation 312, and end insulation 313.

[0032] In another embodiment, the foil conductor 311, the interlayer insulator 312, and the end insulator 313 wound on the supply cylinder 310 are formed as one piece or as a combination of multiple pieces, and the number of the winding materials is adjusted according to the thickness and performance requirements of the coil body 440. In this way, it is possible to avoid increasing the difficulty of winding the coil body 440, which would be required when winding a coil body 440 with a high rated current. The thicker the foil conductor 311 is, the higher the difficulty of forming it becomes, and the greater the dimensional deviation of the foil conductor 311 becomes. Therefore, by stacking multiple layers of foil conductor 311, quality problems such as burrs and surface lift caused by the thick foil conductor 311 can be effectively avoided, and the winding quality of the three-dimensional wound core transformer can be ensured.

[0033] In another embodiment, after the installation of the outer lead wire part 450, it is necessary to further carry out relevant insulation treatment on the coil body 440 to complete the foil coil winding production of the solid wound core transformer. For example, winding insulating material on the outside of the outer lead wire part 450 and the coil body 440 ensures the insulation performance of the coil body 440, improves the protection performance of the foil coil during transportation and installation, and prevents deformation and damage.

[0034] 1 to 4, an embodiment of the present invention further provides a foil coil winding device for a three-dimensional wound core transformer, including a rotation module 100 having a through hole 110 corresponding to the core leg 410, a gear plate 120 and a raceway ring 130 surrounding the through hole 110, and the gear plate 120 and the raceway ring 130 fixedly connected by a fixing block 140, a driving device having a driving end connected to the gear plate 120, and a plurality of supply modules 300 having a supply cylinder 310 and a tensioning device 320 movably connected to the rotation module 100.

[0035] The rotating module 100 and the supplying module 300 allow the winding material wound on the supplying cylinder 310 to be transported out stably and quickly with the rotation of the gear plate 120, thereby improving the supply stability and winding efficiency of the foil coil winding device for the solid wound core transformer. The provision of the through-hole 110 makes it easy to fit the rotating module 100 into the core legs 410 and perform the winding operation on the core legs 410, thereby improving the winding efficiency of the solid wound core transformer. The provision of the raceway ring 130 and the tensioning device 320 prevents the supplying cylinder 310 from being displaced or dislocated during the rotation process, ensures the quality of the coil, and improves the automation degree of the foil coil winding of the solid wound core transformer.

[0036] In this embodiment, the driving end of the driving device can be transmission-connected to the gear plate 120 through a gear, pulley or other structure, so as to ensure stability when the driving device drives the gear plate 120 to rotate.

[0037] 5 and 6, in another embodiment, the tensioning device 320 is located in the supply cylinder 310 and includes a push rod 321, a spring 322 and a friction element 323 in close contact with the supply cylinder 310, and both ends of the spring 322 are in close contact with the push rod 321 and the friction element 323, respectively. By installing the spring 322 and the friction element 323, when the supply cylinder 310 rotates in conjunction with the gear plate 120, the friction element 323 generates a friction force against the supply cylinder 310, which further makes the supply cylinder 310 apply tension to the winding material, thereby avoiding the transposition of the winding material and ensuring the supply stability of the foil coil winding device of the three-dimensional wound core transformer.

[0038] In another embodiment, the supply cylinder 310 has at least one end connected to the rotation module 100, and is inserted into the gear plate 120 by a connecting part 330 to be movably connected to the rotation module 100. The provision of the connecting part 330 improves the connection stability and ease of removal between the supply cylinder 310 and the rotation module 100, and ensures the stable supply of the foil coil winding device of the three-dimensional wound core transformer.

[0039] In another embodiment, both the gear plate 120 and the raceway ring 130 are structured to be combined with multiple members to form a ring shape, which makes it easier to install and remove the rotating module 100 and improves the ease of use of the foil coil winding device for the space wound core transformer.

[0040] In another embodiment, baffle plates 340 are provided at the upper and lower ends of the supply cylinder 310. The provision of the baffle plates 340 helps the supply cylinder 310 to better accommodate and guide the winding material, and improves the stability of the foil coil winding device for the three-dimensional wound core transformer.

[0041] In another embodiment, the rotating module 100 further includes a backing plate 150 fitted to the upper end of the gear plate 120 so as to surround the through hole 110. The installation of the backing plate 150 effectively reduces the friction between the winding material and the gear plate 120, thereby extending the service life of the rotating module 100.

[0042] In another embodiment, the foil coil winding device for a three-dimensional wound core transformer according to the present invention may wind the coil lying down as shown in Fig. 2, in addition to winding the coil lying down as shown in Fig. 1. When winding the coil lying down as shown in Fig. 2, it is necessary to install a rotation module 100 on both ends of the supply cylinder 310 in order to rotate the supply cylinder 310 stably. Compared with the lying down winding method, the lying down winding method has a feature that the length direction of the core legs 410 is perpendicular to the horizontal plane, and has an advantage that the number of times that the core legs 410 and the coil body 440 are turned over is effectively reduced, thereby improving safety during the production process of the transformer.

[0043] The operating principle of the present invention will now be further explained.

[0044] Before production, first, different sizes of supply cylinders 310 are selected according to the heights of the foil conductor 311, the interlayer insulator 312 and the end insulator 313, and different numbers of layers of the foil conductor 311, the interlayer insulator 312 and the end insulator 313 are wound on the corresponding supply cylinders 310 according to the design requirements, so that the upper and lower ends of the winding material can all be in close contact with the baffle plate 340. Then, according to the specification requirements of the foil-type coil of the three-dimensional wound core transformer, the corresponding specification of the rotating module 100 and the corresponding number of supply cylinders 310 are selected, and the diameter of the coil body 440 is ensured to be smaller than the diameter of the through hole 110. The outer wall of the core leg 410 is coated or painted with the insulating layer 420. The gear plate 120, the raceway ring 130, the backing plate 150 and other components are disassembled and fitted to the outside of the insulating layer 420 in order, and the gear plate 120 and the raceway ring 130 are fixedly connected by the fixing block 140. The horizontality of the rotating module 100 is adjusted, and the smoothness of rotation of the rotating module 100 is inspected. The fixing block 140 is fixedly attached to an external device by the mounting portion 141, and the concentricity of the rotating module 100 and the insulating layer 420 is ensured. The supply cylinder 310 wound with the foil conductor 311, the interlayer insulator 312, and the end insulator 313 is arranged in order, and inserted into the gear plate 120 by the connecting portion 330 to be movably connected to the rotating module 100. One end of the foil conductor 311, the interlayer insulator 312, and the end insulator 313 is fixed to the insulating layer 420, and then the inner lead wire portion 430 is installed on the outer wall of the insulating layer 420. The driving device is started, and the rotating module 100 rotates to rotate the supply cylinder 310 around the core leg 410 in conjunction with the foil conductor 311. The coil formed by winding the foil conductor 311 along the insulating layer 420 clamps the inner lead wire portion 430. In addition, the interlayer insulator 312 and the end insulator 313 are also wound around the outer wall of the insulating layer 420 with the core leg 410 as the central axis to form the coil body 440. During the winding process, the supply cylinder 310 rotates around the core leg 410 along with the rotating module 100 and at the same time rotates around its own central axis, so that the friction part 323 generates a friction force against the supply cylinder 310, which further causes the supply cylinder 310 to apply tension to the winding material, thereby avoiding the dislocation of the winding material and ensuring the winding stability of the foil conductor 311, the interlayer insulator 312 and the end insulator 313.When coil body 440 reaches a preset thickness or when the number of turns of foil conductor 311 reaches a preset number, rotating module 100 stops rotating, and outer lead portion 450 is installed at the end of foil conductor 311 remote from inner lead portion 430, and insulation is performed on coil body 440 to complete the winding of solid wound core 400. The above foil-type coil winding operation can be performed simultaneously on each core leg 410 of solid wound core 400, further improving the processing efficiency of solid wound core transformers.

[0045] As can be seen from the above description, in the method and device for winding a foil coil for a solid wound core transformer of the present invention, the rotating module 100 is fitted on the outside of the core legs 410, and the winding operation is performed on the core legs 410 by interlocking a plurality of supply cylinders 310, so that the gap between the coil body 440 and the core legs 410 is effectively reduced, and the manually controlled process in the foil coil winding process is simplified, and the amount of copper material and insulating material used is reduced, thereby reducing the production cost of the transformer. In addition, the heat exchange efficiency between the coil body 440 and the core legs 410 is improved, the short circuit prevention ability of the transformer is improved, and the deformation amount when the coil body 440 is subjected to a radial electric force is reduced, thereby improving the stability of the solid wound core transformer. In addition, the rotating module 100 and the supply cylinder 310 can be applied to the core legs 410 of different sizes, which effectively reduces the accumulation of winding machine tools and equipment, and shortens the production period of the solid wound core transformer.

[0046] Although the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of knowledge possessed by those skilled in the art without departing from the gist of the present invention.

Claims

1. a rotating module having a through hole corresponding to the core leg, a gear plate and a raceway ring surrounding the through hole, the gear plate and the raceway ring being fixedly connected by a fixing block; a drive device having a drive end connected to the gear plate; and a plurality of supply modules having a supply cylinder and a tension device movably connected to the rotating module; The tensioning device is located within the supply cylinder and includes a push rod, a spring, and a friction element that is in close contact with the supply cylinder, and both ends of the spring are in close contact with the push rod and the friction element, respectively.

2. 2. The foil coil winding device for a three-dimensional wound core transformer according to claim 1, wherein the supply cylinder has at least one end connected to the rotating module, and is inserted into the gear plate by a connecting portion and movably connected to the rotating module.

3. 2. The foil coil winding device for a three-dimensional wound core transformer according to claim 1, wherein the gear plate and the raceway ring are both structured to be annular by combining a plurality of members.

Images