Common mode choke coil core winding device

Abstract

The invention relates to the technical field of coils, and discloses a winding device for a common mode choke core, comprising a core transmission device and two groups of winding components, the winding components comprising a core positioning device and a winding sub-component, the two groups of winding components being respectively a first winding component and a second winding component; the core positioning device of the first winding component is used to fix the common mode choke core, and the winding sub-component of the first winding component is used to wind an enameled wire on one of the coil windings of the common mode choke core; the core transmission device is used to transmit the common mode choke core after winding one of the coil windings to the core positioning device of the second winding component, the core positioning device of the second winding component is used to fix the common mode choke core, and the winding sub-component of the second winding component is used to wind another enameled wire on another coil winding of the common mode choke core, thereby realizing automatic winding, effectively reducing labor intensity and improving production efficiency, and avoiding product contamination problems caused by manual winding.

Description

Technical Field

[0001] The invention relates to the technical field of coils, in particular to a winding device for a common mode choke coil magnetic core. Background Art

[0002] Common mode choke is a kind of widely used in the power circuit board of electronic equipment to eliminate electromagnetic pulse interference. In order to make the overall miniaturization of electronic equipment, various internal components are becoming smaller and smaller, such as miniature square ring core. When producing common mode choke, two coils are wound on the opposite straight sides of the miniature square ring core. This common mode choke is one of the best small and high current common mode chokes.

[0003] like Figure 1 As shown, at present, when producing large current common mode chokes, the coils are generally wound manually on two opposite straight sides of a miniature square ring core: 1) Take a core and place it on a manual jig; 2) Take an enameled wire in the left hand and insert it into the core hole, and fix the upper end at the marked position; 3) Grasp the lower end of the wire with the right hand, keep the enameled wire taut, and wrap it around a straight side of the core upward; 4) Thread the wire through the core hole again; 5) Use several fingers to adjust the winding position of the wire at any time to ensure that it is in the correct position; 6) Use the same method to wind the second, third, etc. again until the winding is completed. Take another enameled wire and wind the second winding. However, this production method of common mode chokes faces the problems of high labor intensity and low production efficiency, as well as the pollution caused by manual winding. Summary of the invention

[0004] An object of an embodiment of the present invention is to provide a winding device for a common mode choke, which can reduce labor intensity and improve production efficiency while avoiding product contamination problems caused by manual winding.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a winding device for a common mode choke core, comprising a core transmission device and two groups of winding assemblies, wherein the winding assemblies include a core positioning device and a winding subassembly, and the two groups of winding assemblies are respectively a first winding assembly and a second winding assembly;

[0006] The magnetic core positioning device of the first winding assembly is used to fix the common mode choke magnetic core, and the winding subassembly of the first winding assembly is used to wind an enameled wire on one of the coil windings of the common mode choke magnetic core;

[0007] The core transmission device is used to transfer the common mode choke core after the winding of one of the coil windings is completed to the core positioning device of the second winding assembly, the core positioning device of the second winding assembly is used to fix the common mode choke core, and the winding sub-assembly of the second winding assembly is used to wind another enameled wire on another coil winding of the common mode choke core.

[0008] As a preferred solution, the first winding assembly and the second winding assembly are symmetrical structures to each other.

[0009] As a preferred embodiment, the core positioning device includes a core positioning fixture and a first driving device. The core positioning fixture is used to fix the common mode choke core. The first driving device is used to drive the core positioning fixture to move a first preset distance along the axis of the coil winding after the winding subassembly completes the winding of one circle of the coil winding, so that each circle of the coil can be arranged in sequence on the coil winding.

[0010] As a preferred solution, the winding subassembly includes an upper wire clamp, a lower wire clamp and a winding clamp;

[0011] 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 be wound around the coil winding.

[0012] As a preferred solution, the upper wire clamp is used to fix the first end of the enameled wire passing through the central hole of the common mode choke core, and specifically includes:

[0013] 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 in the first direction by a second preset distance when winding the coil winding; wherein the first direction is the direction from the coil winding being wound to another coil winding.

[0014] As a preferred solution, the upper wire clamp is used to fix the first end of the enameled wire passing through the central hole of the common mode choke core, and further includes:

[0015] When the winding of the coil winding is completed, the upper wire clamp drives the first end of the enameled wire to deviate to a second direction by a third preset distance; wherein the second direction is opposite to the first direction.

[0016] As a preferred embodiment, the winding sub-assembly also includes a threading guide, which is provided with a guide through hole and an opening groove, and the guide through hole is connected to the opening groove; the threading guide is used to move to the top of 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 in the first direction by a second preset distance, and the guide through hole is arranged relative to the center hole of the common mode choke core.

[0017] As a preferred solution, the diameter of the guide through hole decreases from top to bottom.

[0018] As a preferred solution, the width of the opening groove increases from one end of the opening groove close to the guide through hole toward the opening direction of the opening groove.

[0019] As a preferred embodiment, the winding subassembly also includes a side top block and a second driving device, and the second driving device is used to drive the side top block to press on the enameled wire wound on the coil winding when the winding clamp drives the enameled wire to move above the common mode choke core and tightens the enameled wire.

[0020] 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 device for a common-mode choke core, comprising a core transmission device and two groups of winding assemblies, the winding assemblies comprising a core positioning device and a winding sub-assembly, the two groups of winding assemblies being respectively a first winding assembly and a second winding assembly; the core positioning device of the first winding assembly is used to fix the common-mode choke core, and the winding sub-assembly of the first winding assembly is used to wind an enameled wire on one of the coil windings of the common-mode choke core; the core transmission device is used to transmit the common-mode choke core after winding one of the coil windings to the core positioning device of the second winding assembly, the core positioning device of the second winding assembly is used to fix the common-mode choke core, and the winding sub-assembly of the second winding assembly is used to wind another enameled wire on another coil winding of the common-mode choke core, thereby realizing automatic winding, effectively reducing labor intensity and improving production efficiency, while avoiding product contamination problems caused by manual winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the process of manual winding in the prior art;

[0022] Figure 2 is a schematic structural diagram of a winding device for a common mode choke core in an embodiment of the present invention;

[0023] Figure 3 is an exploded view of a first winding assembly in an embodiment of the present invention;

[0024] Figure 4is an exploded view of a second winding assembly in an embodiment of the present invention;

[0025] Figure 5 is a schematic diagram of a winding process of a first winding assembly in an embodiment of the present invention;

[0026] Figure 6 yes Figure 5 Sectional view at AA;

[0027] Figure 7 is a schematic diagram of a winding process of a first winding assembly with a side top block in an embodiment of the present invention;

[0028] Figure 8 is a schematic diagram of a winding process of a first winding assembly in an embodiment of the present invention;

[0029] Fig. 9 is a flow chart of a winding method of a common mode choke core in an embodiment of the present invention;

[0030] Among them, 1. the first winding assembly; 11. the magnetic core positioning fixture of the first winding assembly; 12. the upper wire clamp of the first winding assembly; 13. the lower wire clamp of the first winding assembly; 14. the winding clamp of the first winding assembly; 15. the threading guide of the first winding assembly; 16. the side top block of the first winding assembly; 2. the second winding assembly; 21. the magnetic core positioning device of the second winding assembly; 22. the upper wire clamp of the second winding assembly; 23. the lower wire clamp of the second winding assembly; 24. the winding clamp of the second winding assembly; 25. the threading guide of the second winding assembly; 26. the side top block of the second winding assembly; 3. the common mode choke core. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 2 As shown, the winding device of the common mode choke coil magnetic core of the embodiment of the present invention includes a magnetic core transmission device (not shown in the figure) and two groups of winding components, the winding components include a magnetic core positioning device and a winding sub-component, and the two groups of winding components are respectively a first winding component 1 and a second winding component 2;

[0033] The magnetic core positioning device of the first winding assembly 1 is used to fix the common mode choke magnetic core 3, and the winding subassembly of the first winding assembly is used to wind an enameled wire on one of the coil windings of the common mode choke magnetic core 3;

[0034] The core transmission device is used to transfer the common mode choke core 3 after the winding of one of the coil windings is completed to the core positioning device of the second winding assembly 2, the core positioning device of the second winding assembly 2 is used to fix the common mode choke core 3, and the winding sub-assembly of the second winding assembly 2 is used to wind another enameled wire on another coil winding of the common mode choke core 3.

[0035] In an embodiment of the present invention, a winding device for a common mode choke core includes a core transmission device and two groups of winding assemblies, the winding assemblies include a core positioning device and a winding sub-assembly, and the two groups of winding assemblies are respectively a first winding assembly 1 and a second winding assembly 2; the core positioning device of the first winding assembly 1 is used to fix the common mode choke core, and the winding sub-assembly of the first winding assembly 1 is used to wind an enameled wire on one of the coil windings of the common mode choke core 3; the core transmission device is used to transmit the common mode choke core 3 after winding one of the coil windings to the core positioning device of the second winding assembly 2, the core positioning device of the second winding assembly 2 is used to fix the common mode choke core 3, and the winding sub-assembly of the second winding assembly 2 is used to wind another enameled wire on another coil winding of the common mode choke core 3, thereby realizing automatic winding, effectively reducing labor intensity and improving production efficiency, and avoiding product contamination problems caused by manual winding.

[0036] Exemplarily, the common mode choke core in the embodiment of the present invention is a miniature square ring core.

[0037] In the embodiment of the present invention, the first winding assembly 1 and the second winding assembly 2 are symmetrical structures. In a specific application, in order to simplify the design, reduce costs and improve efficiency, the first winding assembly 1 and the second winding assembly 2 are symmetrical about the vertical plane, and the related winding movements are also symmetrical.

[0038] Combination Figures 2 to 4 as well as Figure 8 As shown, taking the first winding assembly 1 as an example, in an optional embodiment, the magnetic core positioning device includes a magnetic core positioning fixture 11 and a first driving device (not shown in the figure), and the magnetic core positioning fixture 11 is used to fix the common mode choke coil magnetic core 3, and the magnetic core 3 is positioned and fixed to facilitate the winding operation. The first driving device is used to drive the magnetic core positioning fixture 11 to move a first preset distance along the axial direction of the coil winding after the winding subassembly completes the winding of one circle of the coil winding, so that each circle of the coil can be arranged in sequence on the coil winding.

[0039] In addition, since the winding assembly involves many parts, if the first winding assembly 1 is moved every time a line segment is wound, the design difficulty will be greatly increased and it will be not conducive to the miniaturization of the device. In the embodiment of the present invention, the first driving device is used to drive the magnetic core positioning fixture 11 to move a first preset distance along the axis direction of the coil winding after the winding subassembly completes the winding of a circle of the coil winding, so that after each circle of winding is completed, the magnetic core 3 is driven by the magnetic core positioning fixture 11 to move to the winding position of the next circle of winding. Therefore, there is no need to move the first winding assembly 1, which greatly simplifies the design and is conducive to the miniaturization of the device. In the specific implementation, the user can set the first preset distance according to the actual use needs to control the spacing distance between each circle of wire on the coil winding.

[0040] Combination Figures 2 to 4 as well as Figure 8 As shown, in an optional embodiment, the winding subassembly includes an upper wire clamp 12, a lower wire clamp 13 and a winding clamp 14;

[0041] The upper wire clamp 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 clamp 13 is used to tighten the second end of the enameled wire; the winding clamp 14 is used to move along a preset trajectory and rotate around its rotation axis to drive the enameled wire to be wound around the coil winding.

[0042] In the specific implementation, the upper wire clamp 12 is installed on a two-dimensional linear slide to clamp the upper end of the enameled wire to provide the tension required for the winding operation. The lower wire clamp 13 is installed on a linear slide rail, located below the core positioning fixture 11. When the enameled wire passes through the center hole of the core 3 from above, the lower end of the enameled wire is clamped and pulled downward. The winding clamp 14 is installed on a three-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, and the enameled wire is bent to a corresponding angle according to the winding clamp 14 at different positions on the winding track.

[0043] Combination Figure 6 and Figure 8 As shown, in an optional embodiment, the upper wire clamp 12 is used to fix the first end of the enameled wire passing through the central hole of the common mode choke core 3, and specifically includes:

[0044] 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 in the first direction by a second preset distance when winding the coil winding; wherein the first direction is the direction from the coil winding to the other coil winding.

[0045] In an optional embodiment, the upper wire clamp 12 is used to fix the first end of the enameled wire passing through the central hole of the common mode choke core 3, and further includes:

[0046] When the winding of the coil winding is completed, the upper wire clamp 12 drives the first end of the enameled wire to deviate to the second direction by a third preset distance; 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 direction for subsequent use.

[0047] Combination Figures 5 to 7 As shown, in an optional embodiment, the winding sub-assembly also includes a threading guide 15, the threading guide 15 is provided with a guide through hole and an opening groove, and the guide through hole is connected to the opening groove; the threading guide 15 is used to move to the top of 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 in the first direction by a second preset distance, and the guide through hole is arranged relative to the center hole of the common mode choke core 3.

[0048] Combination Figures 5 to 7 As shown, in an optional embodiment, the diameter of the guide through hole decreases from top to bottom, such as a conical hole. The width of the opening slot increases from one end of the opening slot close to the guide through hole toward the opening direction of the opening slot.

[0049] In the specific implementation, the top of the threading guide 15 has a conical hole for guiding the threading of the enameled wire, and the winding side of the conical hole has a cutout to guide the enameled wire to be wound on the current pitch position. The threading guide 15 is mounted on a slide rail, and when extended, it covers the upper part of the magnetic core 3 to guide the threading, and when loading or unloading the magnetic core 3, it is withdrawn to its original position.

[0050] Combination Figure 7 and Figure 8 As shown, in an optional embodiment, the winding sub-assembly also includes a side top block 16 and a second driving device (not shown in the figure), and the second driving device is used to drive the side top block 16 to press on the enameled wire wound on the coil winding when the winding clamp drives the enameled wire to move above the common mode choke core 3 and tightens the enameled wire.

[0051] In the specific implementation, the side top block 16 is installed on a platform composed of two slide rails and can move in two dimensions in the horizontal direction. When the side top block 16 approaches and presses the magnetic core 3, the wound coil is pressed to prevent loosening; and when it needs to be withdrawn after each winding process, it can make room for winding operation.

[0052] See also Fig. 9Accordingly, an embodiment of the present invention further provides a winding method for a common mode choke core based on the above winding device, comprising:

[0053] Step S101, controlling the magnetic core positioning device of the first winding assembly 1 to fix the common mode choke magnetic core 3;

[0054] Step S102, controlling the winding subassembly of the first winding assembly 1 to wind an enameled wire around one of the coil windings of the common mode choke core 3;

[0055] Step S103, controlling the magnetic core transmission device to transmit the common mode choke magnetic core to the magnetic core positioning device of the second winding assembly;

[0056] Step S104, controlling the magnetic core positioning device of the second winding assembly 2 to fix the common mode choke magnetic core 3;

[0057] Step S105 , controlling the winding subassembly of the second winding assembly 2 to wind another enameled wire around another coil winding of the common mode choke core 3 .

[0058] In an optional embodiment, the first winding assembly 1 and the second winding assembly 2 are symmetrical structures to each other.

[0059] In an optional embodiment, taking the first winding assembly 1 as an example, the winding subassembly 1 includes an upper wire clamp 12, a lower wire clamp 13 and a winding clamp 14, and the core positioning device includes a core positioning fixture 11 and a first driving device, and the core positioning fixture 11 is used to fix the common mode choke core 3; then the step S102 "controlling the winding subassembly 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 the step S105 "controlling the winding subassembly 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:

[0060] Each winding operation: when the enameled wire passes through the center hole of the common mode choke coil core 3, the upper wire clamp 12 is controlled to fix the first end of the enameled wire, and the lower wire clamp 13 is controlled to tighten the second end of the enameled wire;

[0061] Control the winding clamp 14 to clamp the second end of the enameled wire, and control the lower wire clamp 13 to release the enameled wire;

[0062] Control the winding clamp 14 to move along a preset trajectory and rotate around its rotation axis to drive the enameled wire to be wound around the coil winding and pass through the central hole of the common mode choke core 3 again;

[0063] Control the winding clamp 14 to loosen the enameled wire, and control the lower wire clamp 13 to tighten the second end of the enameled wire;

[0064] 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 of each turn until the winding of the coil winding is completed.

[0065] In an optional embodiment, the winding subassembly further includes a side top block 16 and a second driving device; the winding clamp 14 is controlled to move along a preset trajectory and rotate around its rotation axis to drive the enameled wire to be wound around the coil winding and pass through the center hole of the common mode choke core 3 again, specifically including:

[0066] Controlling the winding clamp 14 to move along a preset trajectory and rotate around its rotation axis;

[0067] When the winding clamp 14 drives the enameled wire to move above the common mode choke core 3 and tightens the enameled wire, the second driving device drives the top block 16 to press on the enameled wire that has been 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.

[0068] In an optional embodiment, when the enameled wire passes through the center hole of the common mode choke core 3, the upper wire clamp 12 is controlled to fix the first end of the enameled wire, and the lower wire clamp 13 is controlled to tighten the second end of the enameled wire, which specifically includes:

[0069] 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 shift the first end in the first direction by a second preset distance, wherein the first direction is from the coil winding to the other coil winding;

[0070] The lower wire clamp 13 is controlled to tighten the second end of the enameled wire.

[0071] In an optional embodiment, the winding subassembly further includes a threading guide 15, the threading guide 15 is provided with a guide through hole and an open slot, the guide through hole is connected to the open slot; when the enameled wire passes through the center hole of the common mode choke coil core 3, after the upper wire clamp 12 is controlled to clamp the first end of the enameled wire and deviate in the first direction by a second preset distance, it also includes:

[0072] The threading guide 15 is controlled to move to the top of the common mode choke core 3, and the guide through hole is arranged 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 through hole.

[0073] In an optional embodiment, the diameter of the guide through hole decreases from top to bottom.

[0074] In an optional embodiment, the width of the opening groove expands from an end of the opening groove close to the guide through hole toward the opening direction of the opening groove.

[0075] In an optional embodiment, after the first driving device is controlled to drive the magnetic core positioning fixture 11 to move the first preset distance and return to the winding operation of each turn until the winding of the coil winding is completed, the method further includes:

[0076] The first end of the enameled wire is driven to deviate in a second direction by a third preset distance, wherein the second direction is opposite to the first direction.

[0077] Combination Figures 5 to 8 As shown, the winding process of one of the coil windings of the common mode choke core 3 by the first winding assembly 1 is taken as an example to describe in detail the winding method of the common mode choke core provided by the present solution:

[0078] (1) First, the common mode choke coil core 3 is loaded into the core positioning fixture 11;

[0079] (2) inserting the pre-treated enameled wire segment into the center hole of the common mode choke core 3;

[0080] (3) The lower end of the enameled wire segment is clamped by the lower wire clamp 13 and moves downward to the set position, and then the upper end of the enameled wire segment is clamped by the upper wire clamp and deviates to the right; the threading guide 15 moves to the top of the common mode choke core 3;

[0081] (4) The winding clamp is moved in and clamps the enameled wire just above the lower wire clamp 13;

[0082] (5) The lower wire clamp 13 is loosened and withdrawn, and the winding clamp 14 moves along the preset trajectory in the winding plane, while rotating around its own axis to allow the wire tail to bend appropriately. When the wire tail is pulled to the highest position, the enameled wire sticks to the surface of the magnetic core to form the beginning of a circle, and then the side top block moves in to press the wound part of the coil to prevent it from loosening;

[0083] (6) Then the tail of the enameled wire is bent downward and moved downward, and inserted into the center hole of the common mode choke core 3 through the tapered hole on the threading guide 15. The winding position is limited to the correct position by the precise notch guidance on the threading guide 15;

[0084] (7) The lower pull-wire clamp 13 moves upward, clamps the wire tail and pulls it downward to another preset position, and the side top block 16 is withdrawn to make room for the next winding operation;

[0085] (8) At this point, this circle has been wound, and the core positioning fixture 11 moves one pitch along the coil axis to reach the next winding position;

[0086] (9) Repeat steps (4) to (8) for the same number of times according to the number of turns required by the product to complete the winding;

[0087] (10) The upper thread clamp moves to the left, tightening the thread end to form the beginning of the first turn of the coil; all clamps and threading guides 15 are withdrawn, and the core positioning fixture 11 releases the core 3.

[0088] 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 device for a common-mode choke core, comprising a core transmission device and two groups of winding assemblies, the winding assemblies comprising a core positioning device and a winding sub-assembly, the two groups of winding assemblies being a first winding assembly 1 and a second winding assembly 2 respectively; the core positioning device of the first winding assembly 1 is used to fix the common-mode choke core 3, and the winding sub-assembly of the first winding assembly 1 is used to wind an enameled wire on one of the coil windings of the common-mode choke core 3; the core transmission device is used to transmit the common-mode choke core 3 after winding one of the coil windings to the core positioning device of the second winding assembly, the core positioning device of the second winding assembly 2 is used to fix the common-mode choke core 3, and the winding sub-assembly of the second winding assembly is used to wind another enameled wire on another coil winding of the common-mode choke core 3, thereby realizing automatic winding, effectively reducing labor intensity and improving production efficiency, while avoiding product contamination problems caused by manual winding.

[0089] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A winding device for a common mode choke core, It is characterized in that It comprises a magnetic core transmission device and two groups of winding assemblies, wherein the winding assemblies comprise a magnetic core positioning device and a winding subassembly, and the two groups of winding assemblies are respectively a first winding assembly and a second winding assembly; The magnetic core positioning device of the first winding assembly is used to fix the common mode choke magnetic core, and the winding subassembly of the first winding assembly is used to wind an enameled wire on one of the coil windings of the common mode choke magnetic core; The magnetic core transmission device is used to transmit the common mode choke magnetic core after winding one of the coil windings to the magnetic core positioning device of the second winding assembly, the magnetic core positioning device of the second winding assembly is used to fix the common mode choke magnetic core, and the winding subassembly of the second winding assembly is used to wind another enameled wire on another coil winding of the common mode choke magnetic core; The winding subassembly comprises an upper wire clamp, a lower wire clamp and a winding clamp; the upper wire clamp is used to fix the first end of the enameled wire passing through the central hole of the common mode choke coil 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 track and rotate around its rotation axis to drive the enameled wire to be wound on the coil winding; 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, specifically comprising: 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 in a first direction by a second preset distance when winding the coil winding; wherein the first direction is the direction from the coil winding to another coil winding; The upper wire clamp is used to fix the first end of the enameled wire passing through the central hole of the common mode choke coil core, and further includes: when the winding of the coil winding is completed, the upper wire clamp drives the first end of the enameled wire to deviate to a second direction by a third preset distance; wherein the second direction is opposite to the first direction; The winding sub-assembly also includes a threading guide, which is provided with a guide through hole and an open groove, and the guide through hole is connected to the open groove; the threading guide is used to move to the top of 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 shifts the second preset distance in the first direction, and the guide through hole is arranged relative to the center hole of the common mode choke core.

2. The common mode choke coil core winding device according to claim 1, It is characterized in that The first winding assembly and the second winding assembly are symmetrical structures to each other.

3. The common mode choke coil core winding device according to claim 1, It is characterized in that The core positioning device includes a core positioning fixture and a first driving device. The core positioning fixture is used to fix the common mode choke core. The first driving device is used to drive the core positioning fixture to move a first preset distance along the axis of the coil winding after the winding subassembly completes the winding of one circle of the coil winding, so that each circle of the coil can be arranged in sequence on the coil winding.

4. The common mode choke coil core winding device according to claim 1, It is characterized in that The diameter of the guide through hole decreases from top to bottom.

5. The common mode choke coil core winding device according to claim 1, It is characterized in that The width of the opening groove increases from one end of the opening groove close to the guide through hole toward the opening direction of the opening groove.

6. The common mode choke coil core winding device according to claim 1, It is characterized in that The winding subassembly also includes a side top block and a second driving device, and the second driving device is used to drive the side top block to press on the enameled wire wound on the coil winding when the winding clamp drives the enameled wire to move above the common mode choke core and tightens the enameled wire.

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