Winder for common mode choke core

Abstract

The application relates to the technical field of coils and discloses a winding machine for common-mode choke coil magnetic cores, which comprises three magnetic core transmission devices, two enameled wire transmission devices and two winding assemblies. The first magnetic core transmission device is used for moving the common-mode choke coil magnetic core to the magnetic core positioning device of the first winding assembly for fixation. The first enameled wire transmission device is used for moving the first enameled wire to the first winding position. The winding subassembly of the first winding assembly is used for winding the first enameled wire on one of the coil windings of the common-mode choke coil magnetic core. The second magnetic core transmission device is used for moving the common-mode choke coil magnetic core to the magnetic core positioning device of the second winding assembly for fixation. The second enameled wire transmission device is used for moving the second enameled wire to the second winding position. The winding subassembly of the second winding assembly is used for winding the second enameled wire on the other coil winding of the common-mode choke coil magnetic core, so that automatic winding is realized, the labor intensity is effectively reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of coil technology, and in particular to a winding machine for a common-mode choke core. Background Technology

[0002] Common-mode chokes are widely used on power circuit boards of electronic devices to eliminate electromagnetic pulse interference. To miniaturize electronic devices, internal components are becoming increasingly smaller, such as miniature square toroidal cores. In the production of common-mode chokes, two coil windings are wound around the opposite straight edges of this miniature square toroidal core. This type of common-mode choke is one of the best miniature high-current common-mode chokes currently available.

[0003] like Figure 1 As shown, currently, when producing high-current common-mode chokes, the coil is typically wound manually along the two opposite straight edges of a miniature square toroidal magnetic core: 1) Take a magnetic core and place it on a hand jig; 2) Hold an enameled wire in your left hand and thread it through the core hole, fixing the upper end at the marked position; 3) Hold the lower end of the wire with your right hand, keeping the enameled wire taut, and wind it upwards around one straight edge of the magnetic core; 4) Thread the wire through the core hole again; 5) Use several fingers simultaneously to adjust the winding position of the wire to ensure it is in the correct position; 6) Use the same method to wind the second, third, and so on, until the winding is complete. Take another enameled wire and wind the second winding. However, this method of producing common-mode chokes faces the problems of high labor intensity and low production efficiency, as well as the pollution problem caused by manual winding of the product. Summary of the Invention

[0004] The purpose of this invention is to provide a common mode choke winding machine that can reduce labor intensity and improve production efficiency, while avoiding product contamination problems caused by manual winding.

[0005] To address the aforementioned technical problems, this invention provides a winding machine for a common-mode choke core, comprising three core transmission devices, two enameled wire transmission devices, and two sets of winding assemblies. The three core transmission devices are designated as a first core transmission device, a second core transmission device, and a third core transmission device; the two enameled wire transmission devices are designated as a first enameled wire transmission device and a second enameled wire transmission device; and the winding assemblies include a core positioning device and a winding sub-assembly, with the two sets of winding assemblies being designated as a first winding assembly and a second winding assembly.

[0006] The first magnetic core transmission device is used to move the common mode choke core to the magnetic core positioning device of the first winding assembly for fixing; the first enameled wire transmission device is used to move the first enameled wire to the first winding position; and the winding sub-assembly of the first winding assembly is used to wind the first enameled wire onto one of the coil windings of the common mode choke core.

[0007] The second core transmission device is used to move the common mode choke core after one of the coil windings has been completed to the core positioning device of the second winding assembly for fixing. The second enameled wire transmission device is used to move the second enameled wire to the second winding position. The winding sub-assembly of the second winding assembly is used to wind the second enameled wire onto the other coil winding of the common mode choke core.

[0008] The third magnetic core transmission device is used to remove the common-mode choke core after the winding is completed.

[0009] As a preferred embodiment, the magnetic core transmission device includes a first frame and a plurality of first clamping assemblies, the plurality of first clamping assemblies being sequentially connected to the first frame, and the first clamping assemblies being used to clamp the common mode choke magnetic core;

[0010] The enameled wire conveying device includes a second frame and a plurality of second clamping assemblies, the plurality of second clamping assemblies being sequentially connected to the second frame, and the second clamping assemblies being used to clamp the enameled wire;

[0011] The number of the first winding assembly, the number of the second winding assembly, the number of the first clamping assembly, and the number of the second clamping assembly are the same.

[0012] As a preferred embodiment, the first winding assembly and the second winding assembly are symmetrical structures.

[0013] As a preferred embodiment, the magnetic core positioning device includes a magnetic core positioning clamp and a first driving device. The magnetic core positioning clamp is used to fix the common mode choke core. The first driving device is used to drive the magnetic core positioning clamp to move a first preset distance along the coil winding axis after each turn of the coil winding is completed by the winding sub-assembly, so that each turn of the coil can be arranged sequentially on the coil winding.

[0014] As a preferred embodiment, the winding sub-assembly includes an upper wire clip, a lower wire clip, and a winding clip;

[0015] The upper wire clamp is used to fix the first end of the enameled wire passing through the center hole of the common mode choke core; the lower wire clamp is used to tighten the second end of the enameled wire; the winding clamp is used to move along a preset trajectory and rotate around its rotation axis to drive the enameled wire to wind around the coil winding.

[0016] As a preferred embodiment, the upper wire clip is used to secure the first end of the enameled wire passing through the center hole of the common-mode choke core, specifically including:

[0017] The upper wire clamp is used to clamp the first end of the enameled wire passing through the center hole of the common mode choke core and offset it by a second preset distance in a first direction when the coil winding is being wound; wherein, the first direction is the direction from the coil winding being wound to another coil winding.

[0018] As a preferred embodiment, the upper wire clip, used to secure the first end of the enameled wire passing through the center hole of the common-mode choke core, further includes:

[0019] When the coil winding is completed, the upper wire clamp drives the first end of the enameled wire to shift a third preset distance in a second direction; wherein the second direction is opposite to the first direction.

[0020] As a preferred embodiment, the winding sub-assembly further includes a wire guide, which has a guide through hole and an opening slot, the guide through hole communicating with the opening slot; the wire guide is used to move above the common mode choke core after the upper wire clamp clamps the first end of the enameled wire passing through the center hole of the common mode choke core and offsets it by a second preset distance in a first direction, and to make the guide through hole opposite to the center hole of the common mode choke core.

[0021] As a preferred embodiment, the diameter of the guide hole decreases from top to bottom.

[0022] As a preferred embodiment, the winding sub-assembly further includes a side top block and a second driving device. The second driving device is used to drive the side top block to press against the enameled wire that has been wound on the coil winding when the winding clamp moves the enameled wire above the common mode choke core and tightens the enameled wire.

[0023] Compared to existing technologies, the beneficial effects of this invention are as follows: This invention provides a winding machine for a common-mode choke core, comprising three core transmission devices, two enameled wire transmission devices, and two sets of winding assemblies. Each winding assembly includes a core positioning device and a winding sub-assembly. The two sets of winding assemblies are a first winding assembly and a second winding assembly, respectively. The first core transmission device moves the common-mode choke core to the core positioning device of the first winding assembly for fixation. The first enameled wire transmission device moves the first enameled wire to a first winding position. The winding sub-assembly of the first winding assembly winds the first enameled wire around the common-mode choke core. The common-mode choke core is wound on one of the coil windings of a common-mode choke core. A second core transmission device is used to move the common-mode choke core after winding one of the coil windings to the core positioning device of the second winding assembly for fixation. A second enameled wire transmission device is used to move the second enameled wire to the second winding position. The winding sub-assembly of the second winding assembly is used to wind the second enameled wire onto the other coil winding of the common-mode choke core. A third core transmission device is used to remove the common-mode choke core after winding, thereby realizing automatic winding, effectively reducing labor intensity and improving production efficiency, while avoiding product contamination problems caused by manual winding. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the existing manual winding process;

[0025] Figure 2 This is a schematic diagram of the winding machine for the common mode choke core in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of two sets of winding assemblies in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the magnetic core transport device in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the magnetic core structure in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the enameled wire conveying device in an embodiment of the present invention;

[0030] Figure 7 This is an exploded view of the first winding assembly in an embodiment of the present invention;

[0031] Figure 8 This is an exploded view of the second winding assembly in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the winding process of the first winding assembly in an embodiment of the present invention;

[0033] Figure 10 yes Figure 9 Sectional view at AA;

[0034] Figure 11 This is a schematic diagram of the winding process of the first winding assembly with a side top block in an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the winding process of the first winding assembly in an embodiment of the present invention;

[0036] Figure 13 This is a flowchart of the winding method of the common-mode choke core in an embodiment of the present invention;

[0037] Among them, 1. First winding assembly; 11. Magnetic core positioning clamp of the first winding assembly; 12. Upper wire clamp of the first winding assembly; 13. Lower wire clamp of the first winding assembly; 14. Winding clamp of the first winding assembly; 15. Wire threading guide of the first winding assembly; 16. Side top block of the first winding assembly; 2. Second winding assembly; 21. Magnetic core positioning device of the second winding assembly; 22. Upper wire clamp of the second winding assembly; 23. Lower wire clamp of the second winding assembly; 24. Winding clamp of the second winding assembly; 25. Wire threading guide of the second winding assembly; 26. Side top block of the second winding assembly; 3. Common-mode choke core; 4A. First core transmission device; 4B. Second core transmission device; 4C. Third core transmission device; 41. First frame; 42. First clamping assembly; 43. First groove; 44. First protrusion; 45. Second protrusion; 46. First clamping part; 47. Second clamping part; 48. First base; 5A. First enameled wire transmission device; 5B. Second enameled wire transmission device; 51. Second frame; 52. Second clamping assembly; 53. Second base; 54. Third clamping part; 55. Fourth clamping part; 56. Vertical section; 57. Inclined section; 58. Horizontal section. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 2As shown, the common-mode choke core winding machine of this embodiment includes three core transmission devices, two enameled wire transmission devices, and two sets of winding assemblies. The three core transmission devices are a first core transmission device 4A, a second core transmission device 4B, and a third core transmission device 4C. The two enameled wire transmission devices are a first enameled wire transmission device 5A and a second enameled wire transmission device 5B. The winding assembly includes a core positioning device and a winding sub-assembly. The two sets of winding assemblies are a first winding assembly 1 and a second winding assembly 2.

[0040] The first magnetic core transmission device 4A is used to move the common mode choke core 3 to the magnetic core positioning device of the first winding assembly for fixing. The first enameled wire transmission device 5A is used to move the first enameled wire to the first winding position. The winding sub-assembly of the first winding assembly 1 is used to wind the first enameled wire onto one of the coil windings of the common mode choke core 3.

[0041] The second core transmission device 4B is used to move the common mode choke core 3 after one of the coil windings has been completed to the core positioning device of the second winding assembly 2 for fixing. The second enameled wire transmission device 5B is used to move the second enameled wire to the second winding position. The winding sub-assembly of the second winding assembly 2 is used to wind the second enameled wire onto the other coil winding of the common mode choke core 3.

[0042] The third magnetic core transmission device 4C is used to remove the common mode choke core 3 after the winding is completed.

[0043] In this embodiment of the invention, the common-mode choke core winding machine includes three core transmission devices, two enameled wire transmission devices, and two sets of winding assemblies. The three core transmission devices are a first core transmission device 4A, a second core transmission device 4B, and a third core transmission device 4C; the two enameled wire transmission devices are a first enameled wire transmission device 5A and a second enameled wire transmission device 5B; the winding assembly includes a core positioning device and a winding sub-assembly, and the two sets of winding assemblies are a first winding assembly 1 and a second winding assembly 2; the first core transmission device 4A is used to move the common-mode choke core 3 to the core positioning device of the first winding assembly for fixing; the first enameled wire transmission device 5A is used to move the first enameled wire to the first winding position. The winding sub-assembly of the winding assembly 1 is used to wind the first enameled wire onto one of the coil windings of the common mode choke core 3; the second core transmission device 4B is used to move the common mode choke core 3 after winding one coil winding to the core positioning device of the second winding assembly 2 for fixing; the second enameled wire transmission device 5B is used to move the second enameled wire to the second winding position; the winding sub-assembly of the second winding assembly 2 is used to wind the second enameled wire onto the other coil winding of the common mode choke core 3; and the third core transmission device 4C is used to remove the common mode choke core 3 after winding, thereby realizing automatic winding, effectively reducing labor intensity and improving production efficiency, while avoiding product contamination problems caused by manual winding.

[0044] For example, the common-mode choke core in this embodiment of the invention is a miniature square ring core.

[0045] Please see Figure 3 and Figure 4 As shown, in one optional embodiment, the magnetic core transmission device includes a first frame 41 and a plurality of first clamping assemblies 42, the plurality of first clamping assemblies 42 being sequentially connected to the first frame 41, and the first clamping assemblies 42 being used to clamp the common mode choke magnetic core; the enameled wire transmission device includes a second frame 51 and a plurality of second clamping assemblies 52, the plurality of second clamping assemblies 52 being sequentially connected to the second frame 51, and the second clamping assemblies 52 being used to clamp the enameled wire; the number of the first winding assemblies, the number of the second winding assemblies, the number of the first clamping assemblies 42, and the number of the second clamping assemblies 52 are the same.

[0046] In this embodiment of the invention, the number of the first winding assembly, the number of the second winding assembly, the number of the first clamping assembly 42, and the number of the second clamping assembly 52 are all 6.

[0047] Please see Figure 4As shown, in a specific implementation, the magnetic core transport device of this embodiment of the invention further includes a first control module and a first drive mechanism. A first groove 43 is provided on the first end of the magnetic core, and a second groove (not shown in the figure) is provided on the second end of the magnetic core. The first clamping assembly 42 includes a first clamping part 46 and a second clamping part 47. The first clamping part 46 and the second clamping part 47 are respectively clamped on the first groove 43 and the second groove. The first control module is used to control the first drive mechanism to drive the first frame 41 to move, so as to move the magnetic core to the magnetic core positioning device for fixing.

[0048] In one alternative embodiment, a plurality of the first clamping assemblies 42 are equidistantly distributed on the first frame 41.

[0049] Please see Figure 4 As shown, the first end of the magnetic core is provided with a first protrusion 44 and a second protrusion 45, and the first protrusion 44 and the second protrusion 45 form the first groove 43; the second end of the magnetic core is provided with a third protrusion (not shown in the figure) and a fourth protrusion (not shown in the figure), and the third protrusion and the fourth protrusion form the second groove.

[0050] Specifically, the cross-sectional shape of the first clamping part 46 is the same as the cross-sectional shape of the first groove 43, and the size of the first clamping part 46 is adapted to the size of the first groove 43; the cross-sectional shape of the second clamping part 47 is the same as the cross-sectional shape of the second groove, and the size of the second clamping part 47 is adapted to the size of the second groove. It should be noted that the size of the first clamping part 46 being adapted to the size of the first groove 43 means that the first clamping part 46 can be clamped precisely within the first groove 43 without being too loose; the size of the second clamping part 47 being adapted to the size of the second groove means that the second clamping part 47 can be clamped precisely within the second groove without being too loose. On the one hand, this ensures that the first clamping part 46 and the second clamping part 47 can reliably clamp the magnetic core; on the other hand, it ensures that the magnetic core maintains a preset state when it is driven to the magnetic core positioning device, facilitating subsequent operations such as winding the magnetic core.

[0051] To facilitate clamping the magnetic core, the surfaces of the first clamping portion 46 and the second clamping portion 47 in this embodiment are both elastic. Specifically, the first clamping portion 46 and the second clamping portion 47 are made of elastic resin. Because the surfaces of the first clamping portion 46 and the second clamping portion 47 are elastic, the magnetic core can be firmly clamped and is not prone to misalignment, thereby ensuring that it maintains a preset state when driven to the target position, so as to facilitate the smooth progress of subsequent operations such as winding the magnetic core.

[0052] In an optional embodiment, the first clamping assembly 42 further includes a first base 48, a first driving mechanism, and a second driving mechanism. The first driving mechanism and the second driving mechanism are disposed on the first base 48. The first control module is used to control the first driving mechanism and the second driving mechanism to drive the first clamping part 46 and the second clamping part 47 to clamp the magnetic core.

[0053] In one alternative embodiment, the first base 48 is connected to the first frame 41 by fasteners. Specifically, the fasteners are bolts. Of course, the fasteners can also be screws, etc. In addition, other methods can be used to connect the first base 48 to the first frame 41, as long as it can be reliably connected to the first frame 41, which will not be elaborated further here.

[0054] In one optional embodiment, the enameled wire conveying device further includes a second control module and a second drive mechanism. The second control module is used to control the second drive mechanism to drive the second frame 51 to move, so as to move the enameled wire to the winding position.

[0055] In one alternative embodiment, a plurality of the second clamping assemblies 52 are equidistantly distributed on the second frame 51.

[0056] Please see Figure 5 As shown, the second clamping assembly 52 includes a second base 53, two third drive mechanisms, and two clamping parts. The second base 53 is connected to the second frame 51, and the third drive mechanisms are disposed on the second base 53. The two clamping parts are a third clamping part 54 and a fourth clamping part 55, which are arranged opposite to each other. The control module is also used to control the third drive mechanisms to drive the clamping parts to clamp the enameled wire.

[0057] Please see Figure 5 As shown, the clamping part includes a vertical section 56, an inclined section 57, and a horizontal section 58. One end of the vertical section 56 is connected to the driving mechanism, and the other end of the vertical section 56 is connected to one end of the inclined section 57. The other end of the inclined section 57 is connected to one end of the horizontal section 58. The horizontal sections 58 of the first clamping part 46 and the second clamping part 47 are used to clamp the enameled wire. By setting the vertical section 56, the inclined section 57, and the horizontal section 58, the clamping part 4 forms an L-shaped structure, and the enameled wire is vertically arranged and clamped by the horizontal section 58, so it is not interfered with by the vertical section 56 and the inclined section 57.

[0058] To facilitate clamping the enameled wire, the opposing surfaces of the two horizontal segments 58 of the clamping parts 4 in this embodiment are elastic. Specifically, the horizontal segments 58 are made of elastic resin. Because the surfaces of the horizontal segments 58 are elastic, the enameled wire can be firmly clamped and is not prone to misalignment, thereby ensuring that it remains vertical when moved to the target position, facilitating subsequent winding and other operations.

[0059] In this embodiment, the second base 53 is connected to the second frame 51 by fasteners. Specifically, the fasteners are bolts. Of course, the fasteners can also be screws, etc. In addition, other methods can be used to connect the second base 53 to the second frame 51, as long as it can be reliably connected to the second frame 51. Further details are not provided here.

[0060] In this embodiment of the invention, the first winding assembly 1 and the second winding assembly 2 are symmetrical structures. In specific applications, to simplify the design, reduce costs, and improve efficiency, the first winding assembly 1 and the second winding assembly 2 are symmetrical about a vertical plane, and their related winding movements are also symmetrical.

[0061] Combination Figure 2 , Figures 6 to 12 As shown, taking the first winding assembly 1 as an example, in one optional embodiment, the magnetic core positioning device includes a magnetic core positioning clamp 11 and a first driving device (not shown in the figure). The magnetic core positioning clamp 11 is used to fix the common-mode choke core 3. By positioning and fixing the magnetic core 3, the winding operation can be performed. The first driving device is used to drive the magnetic core positioning clamp 11 to move a first preset distance along the coil winding axis after each turn of the coil winding is completed by the winding sub-assembly, so that each turn of the coil can be arranged sequentially on the coil winding.

[0062] Furthermore, since the winding assembly involves many components, moving the first winding assembly 1 for each turn of the coil would significantly increase design complexity and hinder device miniaturization. However, this embodiment of the invention uses a first driving device to drive the magnetic core positioning clamp 11 to move a first preset distance along the coil winding axis after each turn of the winding sub-assembly is completed. This allows the magnetic core 3 to move to the next winding position via the magnetic core positioning clamp 11 after each turn of winding, eliminating the need to move the first winding assembly 1, greatly simplifying the design and facilitating device miniaturization. In practical implementation, the user can set this first preset distance according to actual usage needs to control the spacing between each coil on the coil winding.

[0063] Combination Figure 2 , Figures 6 to 12 As shown, in one optional embodiment, the winding sub-assembly includes an upper wire clip 12, a lower wire clip 13, and a winding clip 14.

[0064] The upper wire clip 12 is used to fix the first end of the enameled wire passing through the center hole of the common mode choke core 3; the lower wire clip 13 is used to tighten the second end of the enameled wire; the winding clip 14 is used to move along a preset trajectory and rotate around its rotation axis to drive the enameled wire to wind around the coil winding.

[0065] In practice, the upper clamp 12 is mounted on a linear slide table in a two-dimensional coordinate system to clamp the upper end of the enameled wire, providing the necessary tension for the winding operation. The lower clamp 13 is mounted on a linear slide rail, located below the core positioning clamp 11. When the enameled wire passes through the center hole of the core 3 from above, it clamps the lower end of the wire and pulls it downwards. The winding clamp 14 is mounted on a three-dimensional coordinate platform and can move in the x, y, and z directions. The z-direction is used for the winding clamp 14 to enter during winding and exit after winding. The winding clamp 14 can rotate around its own central axis, bending the enameled wire at different angles according to the different positions of the winding clamp 14 on the winding trajectory.

[0066] Combination Figure 10 and Figure 12 As shown, in one optional embodiment, the upper wire clip 12 is used to secure the first end of the enameled wire passing through the center hole of the common-mode choke core 3, specifically including:

[0067] The upper wire clamp 12 is used to clamp the first end of the enameled wire passing through the center hole of the common mode choke core 3 and offset it by a second preset distance in a first direction when the coil winding is being wound; wherein, the first direction is the direction from the coil winding being wound to another coil winding.

[0068] In an optional embodiment, the upper wire clip 12 is used to secure the first end of the enameled wire passing through the center hole of the common-mode choke core 3, and further includes:

[0069] When the coil winding is completed, the upper wire clamp 12 moves the first end of the enameled wire to a third preset distance in a second direction; wherein the second direction is opposite to the first direction. When the winding is completed, both ends of the enameled wire can be moved to the same side for subsequent use.

[0070] Combination Figures 9 to 11As shown, in an optional embodiment, the winding sub-assembly further includes a wire guide 15, which has a guide through hole and an opening slot, the guide through hole communicating with the opening slot; the wire guide 15 is used to move above the common mode choke core 3 after the upper wire clamp 12 clamps the first end of the enameled wire passing through the center hole of the common mode choke core 3 and offsets it by a second preset distance in a first direction, and to make the guide through hole opposite to the center hole of the common mode choke core 3.

[0071] Combination Figures 9 to 11 As shown, in one alternative embodiment, the diameter of the guide hole decreases from top to bottom, for example, a conical hole. The width of the opening groove increases from the end of the opening groove near the guide hole towards the opening direction of the opening groove.

[0072] In practice, the top of the threading guide 15 has a conical hole for guiding the threading of the enameled wire. The winding side of the conical hole has a cut to guide the enameled wire to wind around the pitch position of the current turn. The threading guide 15 is mounted on a slide rail. When extended, it covers the upper part of the magnetic core 3 to guide the threading. When loading or unloading the magnetic core 3, it is retracted to its original position.

[0073] Combination Figure 9 and Figure 10 As shown, in an optional embodiment, the winding sub-assembly further includes a side top block 16 and a second driving device (not shown in the figure). The second driving device is used to drive the side top block 16 to press against the enameled wire that has been wound on the coil winding when the winding clamp moves the enameled wire above the common mode choke core 3 and tightens the enameled wire.

[0074] In practice, the side top block 16 is mounted on a platform consisting of two slide rails and can move in two dimensions in the horizontal direction. When the side top block 16 approaches and presses against the magnetic core 3, it presses the wound coil to prevent it from loosening; and when it needs to be withdrawn to accommodate each turn of the winding process, it can make room for the winding operation.

[0075] Please see Figure 13 Accordingly, embodiments of the present invention also provide a winding method for a common-mode choke core based on the above-described winding machine, comprising:

[0076] Step S101: Control the first magnetic core transmission device to move the common mode choke core to the magnetic core positioning device of the first winding assembly for fixing;

[0077] Step S102: Control the first enameled wire conveying device to move the first enameled wire to the first winding position;

[0078] Step S103: Control the winding sub-assembly of the first winding assembly to wind the first enameled wire onto one of the coil windings of the common mode choke core;

[0079] Step S104: Control the second magnetic core transmission device to move the common mode choke core after winding one of the coil windings to the magnetic core positioning device of the second winding assembly for fixing;

[0080] Step S105: Control the second enameled wire conveying device to move the second enameled wire to the second winding position;

[0081] Step S106: Control the winding sub-assembly of the second winding assembly to wind the second enameled wire onto another coil winding of the common mode choke core;

[0082] Step S107: Control the third magnetic core transmission device to remove the common mode choke core after winding is completed.

[0083] In one optional embodiment, the magnetic core transmission device includes a first frame 41 and a plurality of first clamping assemblies 42, the plurality of first clamping assemblies 42 being sequentially connected to the first frame 41, and the first clamping assemblies 42 being used to clamp the common mode choke magnetic core; the enameled wire transmission device includes a second frame 51 and a plurality of second clamping assemblies 52, the plurality of second clamping assemblies 52 being sequentially connected to the second frame 51, and the second clamping assemblies 52 being used to clamp the enameled wire; the number of the first winding assemblies, the number of the second winding assemblies, the number of the first clamping assemblies 42, and the number of the second clamping assemblies 52 are the same.

[0084] In this embodiment of the invention, the number of the first winding assembly, the number of the second winding assembly, the number of the first clamping assembly 42, and the number of the second clamping assembly 52 are all 6.

[0085] In one alternative implementation, the first winding assembly 1 and the second winding assembly 2 are symmetrical to each other.

[0086] In an optional embodiment, taking the first winding assembly 1 as an example, the winding sub-assembly 1 includes an upper wire clip 12, a lower wire clip 13, and a winding clip 14. The magnetic core positioning device includes a magnetic core positioning fixture 11 and a first driving device. The magnetic core positioning fixture 11 is used to fix the common-mode choke core 3. Then, step S103, "controlling the winding sub-assembly of the first winding assembly 1 to wind an enameled wire around one of the coil windings of the common-mode choke core 3," and step S106, "controlling the winding sub-assembly of the second winding assembly 2 to wind another enameled wire around another coil winding of the common-mode choke core 3," both specifically include:

[0087] Each winding operation: When the enameled wire passes through the center hole of the common mode choke core 3, control the upper wire clip 12 to fix the first end of the enameled wire, and control the lower wire clip 13 to tighten the second end of the enameled wire.

[0088] Control the winding clamp 14 to clamp the second end of the enameled wire, and control the pull-down clamp 13 to release the enameled wire;

[0089] Control the winding clamp 14 to move along a preset track and rotate around its rotation axis, so as to drive the enameled wire to be wound on the coil winding and pass through the center hole of the common mode choke core 3 again;

[0090] Control the winding clamp 14 to release the enameled wire, and control the pull-down clamp 13 to tighten the second end of the enameled wire;

[0091] The first driving device is controlled to drive the magnetic core positioning fixture 11 to move a first preset distance and return to the winding operation for each turn until the winding of the coil is completed.

[0092] In an optional embodiment, the winding sub-assembly further includes a side top block 16 and a second driving device; then the control winding clamp 14 moves along a preset trajectory and rotates around its rotation axis to drive the enameled wire to wind onto the coil winding and pass through the center hole of the common mode choke core 3 again, specifically including:

[0093] Control the winding clamp 14 to move along a preset trajectory and rotate around its rotation axis;

[0094] When the winding clamp 14 moves the enameled wire above the common mode choke core 3 and tightens the enameled wire, the second drive device drives the top block 16 to press against the enameled wire that is already wound on the coil winding, and controls the winding clamp 14 to drive the enameled wire to pass through the center hole of the common mode choke core 3 again.

[0095] In one optional embodiment, when the enameled wire passes through the center hole of the common-mode choke core 3, the upper wire clip 12 is controlled to fix the first end of the enameled wire, and the lower wire clip 13 is controlled to tighten the second end of the enameled wire, specifically including:

[0096] When the enameled wire passes through the center hole of the common mode choke core 3, the upper wire clamp 12 is controlled to clamp the first end of the enameled wire and offset it in the first direction by a second preset distance, wherein the first direction is from the coil winding to another coil winding.

[0097] Control the pull-down clamp 13 to tighten the second end of the enameled wire.

[0098] In an optional embodiment, the winding sub-assembly further includes a wire guide 15, which has a guide through hole and an opening slot, the guide through hole communicating with the opening slot; then, after the upper wire clamp 12 clamps the first end of the enameled wire and shifts it a second preset distance in a first direction when the enameled wire passes through the center hole of the common-mode choke core 3, the following further includes:

[0099] The wire guide 15 is controlled to move above the common mode choke core 3, and the guide hole is positioned opposite to the center hole of the common mode choke core 3, so that the enameled wire can pass through the center hole of the common mode choke core 3 via the guide hole.

[0100] In one alternative implementation, the diameter of the guide hole decreases from top to bottom.

[0101] In one alternative embodiment, the width of the opening groove increases from one end of the opening groove near the guide hole toward the opening direction of the opening groove.

[0102] In an optional embodiment, after the first driving device drives the magnetic core positioning fixture 11 to move a first preset distance and return to the winding operation until the winding of the coil is completed, the method further includes:

[0103] The first end of the enameled wire is shifted a third preset distance in a second direction, wherein the second direction is opposite to the first direction.

[0104] Combination Figures 9 to 12 As shown, the winding process of one coil winding of the common-mode choke core 3 by the first winding assembly 1 is used as an example to describe in detail the winding method of the common-mode choke core provided by this solution:

[0105] (1) First, the common mode choke core 3 is loaded into the core positioning fixture 11;

[0106] (2) The pre-treated enameled wire segment is inserted into the center hole of the common-mode choke core 3;

[0107] (3) The lower end of the enameled wire segment is clamped by the pull-down wire clip 13 and moved downward to the set position. Then the upper end of the enameled wire segment is clamped by the upper wire clip and shifted to the right. The wire guide 15 moves into the top of the common mode choke core 3.

[0108] (4) Move the wire clip in and clamp the enameled wire tightly above the pull-down wire clip 13;

[0109] (5) The pull-down clamp 13 is released and withdrawn, and the winding clamp 14 moves along the preset track in the winding plane while rotating around its own axis to make the end of the wire bend appropriately. When the end of the wire is pulled to the highest position, the enameled wire adheres to the surface of the magnetic core, forming the beginning part of a turn. Then the side top block moves in to press the wound part of the coil to prevent it from loosening.

[0110] (6) Then the enameled wire tail bends downward and moves downward, and is inserted into the center hole of the common mode choke core 3 through the tapered hole on the wire guide 15. With the help of the precision notch on the wire guide 15, the winding position is limited to the correct position;

[0111] (7) Pull down the cable clip 13 and move it up to clamp the end of the cable and pull it down to another preset position. The side top block 16 is retracted to make room for the next winding operation.

[0112] (8) This one loop has been completed. The magnetic core positioning fixture 11 moves one pitch along the coil axis to reach the next winding position.

[0113] (9) Repeat steps (4) to (8) the same number of times as required by the product to complete the winding of this winding;

[0114] (10) Move the upper wire clamp to the left to tighten the wire end and form the beginning part of the first turn of the coil; remove all clamps and wire guide 15, and release the magnetic core 3 with the magnetic core positioning clamp 11.

[0115] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows: The embodiments of the present invention provide a winding machine for a common-mode choke core, including three core transmission devices, two enameled wire transmission devices, and two sets of winding assemblies. The three core transmission devices are a first core transmission device 4A, a second core transmission device 4B, and a third core transmission device 4C; the two enameled wire transmission devices are a first enameled wire transmission device 5A and a second enameled wire transmission device 5B; the winding assembly includes a core positioning device and a winding sub-assembly, and the two sets of winding assemblies are a first winding assembly 1 and a second winding assembly 2; the first core transmission device 4A is used to move the common-mode choke core 3 to the core positioning device of the first winding assembly for fixing, and the first enameled wire transmission device 5A is used to transport the first enameled wire... The winding assembly 1 moves to the first winding position, where its winding sub-assembly winds the first enameled wire around one of the coil windings of the common-mode choke core 3. The second core transfer device 4B moves the common-mode choke core 3, after winding one coil winding, to the core positioning device of the second winding assembly 2 for fixation. The second enameled wire transfer device 5B moves the second enameled wire to the second winding position, where its winding sub-assembly winds the second enameled wire around the other coil winding of the common-mode choke core 3. The third core transfer device 4C removes the common-mode choke core 3 after winding, thus achieving automatic winding, effectively reducing labor intensity and improving production efficiency, while avoiding product contamination problems caused by manual winding. This embodiment of the invention also provides a method for winding a common-mode choke core.

[0116] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A winding machine for a common-mode choke core, characterized in that, It includes three magnetic core transmission devices, two enameled wire transmission devices, and two sets of winding assemblies. The three magnetic core transmission devices are designated as a first magnetic core transmission device, a second magnetic core transmission device, and a third magnetic core transmission device. The two enameled wire transmission devices are designated as a first enameled wire transmission device and a second enameled wire transmission device. The winding assemblies include a magnetic core positioning device and a winding sub-assembly. The two sets of winding assemblies are designated as a first winding assembly and a second winding assembly. The first magnetic core transmission device is used to move the common mode choke core to the magnetic core positioning device of the first winding assembly for fixing; the first enameled wire transmission device is used to move the first enameled wire to the first winding position; and the winding sub-assembly of the first winding assembly is used to wind the first enameled wire onto one of the coil windings of the common mode choke core. The second core transmission device is used to move the common mode choke core after one of the coil windings has been completed to the core positioning device of the second winding assembly for fixing. The second enameled wire transmission device is used to move the second enameled wire to the second winding position. The winding sub-assembly of the second winding assembly is used to wind the second enameled wire onto the other coil winding of the common mode choke core. The third magnetic core transmission device is used to remove the common-mode choke magnetic core after the winding is completed. The winding sub-assembly includes an upper wire clip, a lower wire clip, and a winding clip; The upper wire clamp is used to fix the first end of the enameled wire passing through the center hole of the common mode choke core; the lower wire clamp is used to tighten the second end of the enameled wire; the winding clamp is used to move along a preset trajectory and rotate around its rotation axis to drive the enameled wire to wind around the coil winding. The upper wire clip is used to secure the first end of the enameled wire passing through the center hole of the common-mode choke core, specifically including: The upper wire clamp is used to clamp the first end of the enameled wire passing through the center hole of the common mode choke core and offset it a second preset distance in a first direction when the coil winding is being wound; wherein, the first direction is the direction from the coil winding being wound to another coil winding; The upper wire clip is used to secure the first end of the enameled wire passing through the center hole of the common-mode choke core, and also includes: When the coil winding is completed, the upper wire clamp causes the first end of the enameled wire to shift a third preset distance in a second direction; wherein the second direction is opposite to the first direction. The winding sub-assembly further includes a wire guide, which has a guide through hole and an opening slot, the guide through hole communicating with the opening slot; the wire guide is used to move above the common mode choke core after the upper wire clamp clamps the first end of the enameled wire passing through the center hole of the common mode choke core and offsets it by a second preset distance in the first direction, and to make the guide through hole opposite to the center hole of the common mode choke core; The winding sub-assembly also includes a side top block and a second driving device. The second driving device is used to drive the side top block to press against the enameled wire that has been wound on the coil winding when the winding clamp moves the enameled wire above the common mode choke core and tightens the enameled wire.

2. The winding machine for the common-mode choke core as described in claim 1, characterized in that, The magnetic core transmission device includes a first frame and a plurality of first clamping assemblies, the plurality of first clamping assemblies being sequentially connected to the first frame, and the first clamping assemblies being used to clamp the common mode choke magnetic core; The enameled wire conveying device includes a second frame and a plurality of second clamping assemblies, the plurality of second clamping assemblies being sequentially connected to the second frame, and the second clamping assemblies being used to clamp the enameled wire; The number of the first winding assembly, the number of the second winding assembly, the number of the first clamping assembly, and the number of the second clamping assembly are the same.

3. The winding machine for the common-mode choke core as described in claim 1, characterized in that, The first winding assembly and the second winding assembly are symmetrical structures.

4. The winding machine for the common-mode choke core as described in claim 1, characterized in that, The magnetic core positioning device includes a magnetic core positioning clamp and a first driving device. The magnetic core positioning clamp is used to fix the common mode choke core. The first driving device is used to drive the magnetic core positioning clamp to move a first preset distance along the coil winding axis after the winding sub-assembly completes each turn of the coil winding, so that each turn of the coil can be arranged sequentially on the coil winding.

5. The winding machine for the common-mode choke core as described in claim 1, characterized in that, The diameter of the guide hole decreases from top to bottom.

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