A wire winding mold

Abstract

The utility model discloses a kind of winding mould, including clamp, front mould and back mould, clamp configuration is installed the magnetic core of wire receiving column along up-down direction extension;Front mould and back mould are separately arranged on the front and back of clamp, front mould and back mould can be moved along front-back direction to be close to or away from clamp, front mould and back mould are formed into two left and right distribution limit through holes, two limit through holes are respectively used for two wire receiving columns to pass through, the inner wall of two limit through holes is equipped with helical groove, and the axial direction of two helical grooves is along up-down direction extension, back mould is equipped with two wire guide holes, and the axial direction of two wire guide holes is along front-back direction extension, two wire guide holes are respectively communicated with one end of two helical grooves, and two wire guide holes are respectively used for two enameled wires to pass through. Enameled wire is transported to limit through hole by wire guide hole, under the action of wire guide hole and helical groove, enameled wire moves along helical trajectory and is wound on wire receiving column, winding efficiency is higher, and operation method is simple.

Description

Technical Field

[0001] This utility model relates to the field of winding equipment technology, and in particular to a winding mold. Background Technology

[0002] Winding machines or winding equipment are commonly used in the manufacture of electronic components such as transformers and inductors, winding enameled wire onto a bobbin or magnetic core. Currently, there are two main winding methods. The first method involves a winding shaft driving the bobbin or other receiving components to rotate, so that the enameled wire is wrapped around the receiving components. The second method involves a hook head pulling the enameled wire, and then a wire-pulling mechanism pulling the enameled wire around the receiving components. The first winding method and the corresponding winding equipment are not suitable for winding two parallel receiving posts on a magnetic core. The winding equipment for the second method may be able to wind two parallel receiving posts on a magnetic core through improvement, but it requires multiple cycles of hooking and pulling the enameled wire to force deformation, thus gradually winding the enameled wire onto the receiving components. The winding speed is relatively slow. Furthermore, both of these winding methods force deformation of the enameled wire by tightening the wire ends, shaping the enameled wire through tensioning, making the process and operation methods quite complex. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a winding mold for guiding the movement of two enameled wires, so that the two enameled wires are wound rapidly in a spiral shape around two receiving posts.

[0004] A winding mold according to an embodiment of the present invention includes a clamp, a front mold, and a rear mold. The clamp is configured to mount a magnetic core with a wire receiving post extending in the vertical direction. The front mold and the rear mold are respectively disposed on the front and rear sides of the clamp. Both the front mold and the rear mold can move in the front-back direction to approach or move away from the clamp. The front mold and the rear mold together form two left-right distributed limiting through holes. The two limiting through holes are respectively used for the two wire receiving posts to pass through. The inner walls of the two limiting through holes are provided with spiral grooves, and the axial direction of the two spiral grooves is extended in the vertical direction. The rear mold is provided with two wire holes, both of which are extended in the front-back direction. The two wire holes are respectively connected to one end of the two spiral grooves, and the two wire holes are respectively used for two enameled wires to pass through.

[0005] It has at least the following beneficial effects:

[0006] Enameled wire is fed through two guide holes into two limiting through holes. Guided by the two guide holes, the two wire ends will respectively abut against the inner wall of one end of the two spiral grooves. Guided by the inner wall of the spiral groove, the wire ends of the enameled wire move along the inner wall of the spiral groove towards the other end of the spiral groove until the two wire ends of the two enameled wires extend to the other end of the two spiral grooves. During this process, both enameled wires are deformed or transformed into a spiral shape. By simply feeding enameled wire into the guide holes, the enameled wire can be wound onto the receiving post. The spiral grooves shape the enameled wire. The operation method is simple and improves the winding efficiency.

[0007] According to some embodiments of the present invention, the rear mold is provided with an outlet in the area above the two spiral grooves. The two outlets are respectively used to guide the two left and right distributed wire ends to extend to the left and right respectively. The left and right sides of the rear mold are provided with straightening grooves. The two straightening grooves extend in the left and right direction. The inner wall of the straightening groove is used to straighten the wire ends.

[0008] According to some embodiments of the present invention, the opening of the straightening groove faces forward and upward, the straightening groove is used for the straightening block to extend into, and the straightening block is used to press the wire end against the bottom of the straightening groove.

[0009] According to some embodiments of the present invention, the straightening groove has two flat surfaces and an arc surface that transitions between the two flat surfaces. The arc surface and the two flat surfaces are parallel to each other in the left-right direction, and the radius corresponding to the arc surface is equal to the radius of the enameled wire.

[0010] According to some embodiments of the present invention, the rear side of the front mold is provided with two first half-limiting through holes, and the inner walls of the two first half-limiting through holes are provided with first half-spiral grooves. The front side of the rear mold is provided with two second half-limiting through holes, and the inner walls of the two second half-limiting through holes are provided with second half-spiral grooves. One first half-limiting through hole and one second half-limiting through hole are combined to form a complete limiting through hole, and one first half-spiral groove and one second half-spiral groove are combined to form a complete spiral groove.

[0011] According to some embodiments of the present invention, the cross-sections of the first semi-spiral groove and the second semi-spiral groove are both semi-circular.

[0012] According to some embodiments of the present invention, the clamp is provided with a boss, and the upper surface of the boss is provided with a limiting groove for limiting the lower end of the magnetic core.

[0013] According to some embodiments of the present invention, the lower end of the rear side of the front mold is provided with a first clearance groove, and the lower end of the front side of the rear mold is provided with a second clearance groove. Both the first clearance groove and the second clearance groove are used for the boss to extend into.

[0014] According to some embodiments of the present invention, the rear side of the rear mold is provided with a guide groove, the opening of the guide groove faces rearward, the wire hole is opened at the bottom of the guide groove, the guide groove is used for the wire feeding device to extend into, and the wire feeding device is used to feed the enameled wire into the wire hole.

[0015] According to some embodiments of the present invention, the inner wall of the wire hole and the inner wall of one end of the spiral groove have an intersection point, and the tangent direction of the inner wall of the spiral groove at the intersection point is parallel to the axial direction of the wire hole.

[0016] Additional aspects and advantages of this 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. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0020] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0021] Figure 4 This is a partial structural diagram of the magnetic core wound with two enameled wires and the clamp according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the fixture and rear mold according to an embodiment of the present invention;

[0023] Figure 6 for Figure 5 A magnified view of a portion of point B in the middle;

[0024] Figure 7 This is a schematic diagram of the fixture and front mold according to an embodiment of the present invention;

[0025] Icon labels:

[0026] 1. Enamelled wire; 11. Wire end; 12. Wire tail;

[0027] Magnetic core 2, receiving post 21;

[0028] Fixture 3, limiting groove 31;

[0029] Front mold 4, first clearance groove 41;

[0030] Rear mold 5, wire hole 51, straightening groove 52, guide part 53, second clearance groove 54, guide groove 55;

[0031] Spiral groove 6. Detailed Implementation

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figure 4 This utility model discloses a winding mold, which is used to wind two enameled wires 1 onto two parallel receiving posts 21 on a magnetic core 2. The head 11 and tail 12 of each enameled wire 1 extend to the outside of the magnetic core 2. The receiving post 21 is the area on the magnetic core 2 where the enameled wire 1 is wound. The enameled wire 1 is a common round wire.

[0036] Reference Figures 1 to 3 The winding mold includes a clamp 3, a front mold 4, and a rear mold 5.

[0037] Reference Figure 3 and Figure 4 The clamp 3 is configured to mount the magnetic core 2, which extends vertically along the wire receiving post 21. The upper surface of the clamp 3 is provided with a limiting groove 31, which is adapted to the lower end of the magnetic core 2. The lower end of the magnetic core 2 is mounted in the limiting groove 31, which limits the lower end of the magnetic core 2 in the horizontal direction, preventing the magnetic core 2 from shifting in the horizontal direction, so that the magnetic core 2 is in a vertical position, and thus the axial direction of the two wire receiving posts 21 of the magnetic core 2 extends vertically.

[0038] Reference Figure 1 and Figure 2The front mold 4 and the rear mold 5 are respectively located on the front and rear sides of the fixture 3. Both the front mold 4 and the rear mold 5 can move in the front-rear direction, allowing them to move closer to or further away from the fixture 3. When the front mold 4 and the rear mold 5 abut against each other, both the front mold 4 and the rear mold 5 move closer to the fixture 3, completing the mold closing. (Refer to...) Figure 2 , Figure 3 , Figures 5 to 7 The front mold 4 and the rear mold 5 together form two left-right distributed limiting through holes, which are used for the passage of two wire receiving posts 21. The front mold 4 and the rear mold 5 are in a state of surrounding the two wire receiving posts 21. The inner walls of the two limiting through holes are provided with spiral grooves 6, and the axial direction of the two spiral grooves 6 is extended in the vertical direction. (Refer to...) Figure 4 and Figure 5 The rear mold 5 is provided with two wire holes 51 that extend axially in the front-rear direction. The two wire holes 51 are respectively connected to one end of the two spiral grooves 6, and the two wire holes 51 are respectively used for two enameled wires 1 to pass through.

[0039] Initially, the front mold 4 and the rear mold 5 are in the open state, and the clamp 3 is located between the front mold 4 and the rear mold 5. The front mold 4 and the rear mold 5 are far away from the clamp 3. At this time, it is convenient to install the lower end of the magnetic core 2 on the clamp 3. Then, the mold is closed, which drives the front mold 4 and the rear mold 5 to move closer to each other. The front mold 4 and the rear mold 5 are close to the clamp 3 and abut against each other. The front mold 4 and the rear mold 5 form two limiting through holes in the area of ​​the corresponding clamp 3. At this time, the two wire receiving posts 21 are respectively located in the two limiting through holes, and the two wire holes 51 are respectively connected to one end of the two spiral grooves 6.

[0040] At this point, the two ends 11 of the two enameled wires 1 can be pushed into the two wire holes 51 by the external wire feeding device. Under the guidance of the two wire holes 51, the two ends 11 will abut against the inner wall of one end of the two spiral grooves 6 respectively. Under the continuous pushing of the wire feeding device and the guidance of the inner wall of the spiral groove 6, the ends 11 of the enameled wires 1 move along the inner wall of the spiral groove 6 toward the other end of the spiral groove 6 until the two ends 11 of the two enameled wires 1 extend to the other end of the two spiral grooves 6 respectively. During this process, the two enameled wires 1 are deformed or transformed into a spiral shape. The two enameled wires 1 are wound around the two wire receiving posts 21 to complete the winding of the magnetic core 2 and obtain the required electronic components or products. Finally, the front mold 4 and the rear mold 5 move away from each other again, that is, the front mold 4 and the rear mold 5 move away from the fixture 3. The mold is opened again, and the electronic components can be removed from the fixture 3, and the lower end of the other magnetic core 2 can be installed on the fixture 3.

[0041] First, the magnetic core 2 is positioned by the clamp 3, and then the mold is closed. Two wire receiving posts 21 are respectively inserted into the two limiting through holes formed by the front mold 4 and the rear mold 5. The inner walls of the two limiting through holes are provided with spiral grooves 6. Then, the wire feeding device simultaneously drives the two enameled wires 1 to move towards the clamp 3. The two wire ends 11 pass through the two wire holes 51 and abut against the inner walls of the two spiral grooves 6. The inner walls of the spiral grooves 6 force the wire ends 11 to deform. The wire feeding device continues to drive the two enameled wires 1 to move towards the clamp 3. The two wire ends 11 move along the inner walls of the two spiral grooves 6 and extend to the other end of the two spiral grooves 6, so that the middle part of the two enameled wires 1 are respectively wound on the two wire receiving posts 21. After the mold is opened, the magnetic core 2 after winding can be removed from the clamp 3. It is convenient, quick and efficient.

[0042] The winding die can quickly wind two enameled wires 1 onto two receiving posts 21 simultaneously. The winding method is different from the first method, which requires the winding shaft to drive the frame and other receiving components to rotate so that the enameled wire is wrapped around the receiving components; it is also different from the second method, which uses a hook head to pull the enameled wire and then a wire-pulling mechanism to pull the enameled wire around the receiving components. The winding die can improve winding efficiency, and at the same time, it forces the enameled wire 1 to deform through the spiral groove 6 to complete the shaping of the enameled wire 1. It is only necessary to feed the enameled wire 1 of a preset length into the wire hole 51. The operation is convenient and the method is simple.

[0043] It should be understood that, in order to facilitate the connection of the enameled wire 1 with other components, refer to... Figure 4 Both the wire head 11 and the wire tail 12 extend beyond the receiving post 21 and have a certain length. The wire head 11, which extends beyond the other end of the spiral groove 6, will not interfere with the clamp 3, the front mold 4, or the rear mold 5. When the mold is opened again, since the enameled wire 1 is already wound on the receiving post 21 and the magnetic core 2 is limited on the clamp 3, the rear mold 5 moves backward to move away from the clamp 3. The clamp 3, the magnetic core 2, and the enameled wire 1 will not move with the rear mold 5, so the wire tail 12 will completely pass through the wire hole 51 and detach from the rear mold 5.

[0044] The axial direction of the wire hole 51 extends in the front-back direction. The axial direction of the wire hole 51 is perpendicular to the axial direction of the spiral groove 6. When the wire feeding device pushes the end 11 of the enameled wire 1 into the spiral groove 6 and extends it to the other end of the spiral groove 6, the wire feeding device stops driving the enameled wire 1. The end 12 of the enameled wire 1 is in the wire hole 51. The wire hole 51 shapes the end 12. After the rear mold 5 moves backward and away from the clamp 3, the end 12 exits the wire hole 51, so that the end 12 continues to extend in the front-back direction and the axial direction of the end 12 is perpendicular to the axial direction of the wire receiving post 21.

[0045] Reference Figure 6The inner wall of the wire hole 51 and the inner wall of one end of the spiral groove 6 intersect at a point. The tangent direction of the inner wall of the spiral groove 6 at the intersection point is parallel to the axis of the wire hole 51, so that when the wire end 11 of the enameled wire 1 passes through the wire hole 51, it just touches the inner wall of one end of the spiral groove 6. The wire end 11 can be deformed or deformed from the moment it enters the spiral groove 6, so that the wire end 11 and the middle part of the enameled wire 1 move along the spiral trajectory of the spiral groove 6, and finally the middle part of the enameled wire 1 is wound around the receiving post 21.

[0046] In this embodiment, one end of the spiral groove 6 refers to the lower end of the spiral groove 6, and the other end of the spiral groove 6 refers to the upper end of the spiral groove 6. The two wire holes 51 are arranged symmetrically from left to right, and the two limiting through holes are also arranged symmetrically from left to right.

[0047] Reference Figure 7 In some embodiments, the rear side of the front mold 4 is provided with two left-right distributed first semi-limiting through holes, and the inner walls of the two first semi-limiting through holes are provided with first semi-spiral grooves, as shown in the figure. Figure 5 and Figure 6 The front side of the rear mold 5 is provided with two second half limiting through holes. The inner wall of the two second half limiting through holes is provided with a second half spiral groove. A first half limiting through hole and a second half limiting through hole are combined into a complete limiting through hole. A first half spiral groove and a second half spiral groove are combined into a complete spiral groove 6. That is, the limiting through hole and the spiral groove 6 are both half-open structures, so that when the front mold 4 and the rear mold 5 are closed, they can surround the two wire receiving posts 21. When the front mold 4 and the rear mold 5 are opened, they can smoothly detach from the two wire receiving posts 21 and the two enameled wires 1 on the two wire receiving posts 21.

[0048] In some embodiments, the cross-sections of the first and second helical grooves are both semi-circular. The inner walls of the first and second helical grooves can match the outer wall of the enameled wire 1, which is beneficial for the inner wall of the helical groove 6 to force the enameled wire 1 to deform. When the front mold 4 and the rear mold 5 move away from each other, it ensures that the enameled wire 1 can smoothly detach from the inner walls of the first and second helical grooves.

[0049] It is understandable that a spiral channel is formed between the front mold 4, the rear mold 5, and the wire receiving post 21 located in the limiting through hole. The spiral channel spirals upward from bottom to top, and the spiral channel allows the enameled wire 1 to pass through. The width of the spiral channel is adapted to the diameter of the enameled wire 1.

[0050] In some embodiments, the lower end of the rear side of the front mold 4 is provided with a first clearance groove 41, and the lower end of the front side of the rear mold 5 is provided with a second clearance groove 54. The first clearance groove 41 and the second clearance groove 54 are both used for the boss to extend into. When the front mold 4 and the rear mold 5 approach each other and abut against each other, the boss extends into the first clearance groove 41 and the second clearance groove 54. That is, the boss can be located in the first clearance groove 41 and the second clearance groove 54 so that the two wire receiving posts 21 of the magnetic core 2 on the boss can just pass through the two left and right distributed limiting through holes, avoiding interference between the clamp 3 and the front mold 4, the rear mold 5, or between the front mold 4 and the rear mold 5.

[0051] In another embodiment, refer to Figure 2 , Figure 5 and Figure 7 The lower end of the rear side of the front mold 4 is provided with a first clearance groove 41, and the lower end of the front side of the rear mold 5 is provided with a second clearance groove 54. The fixture 3 is provided with a boss, and the upper surface of the boss is provided with a limiting groove 31. The upper end of the rear side of the front mold 4 is provided with two first half limiting through holes, and the inner wall of each of the two first half limiting through holes is provided with a first half spiral groove. The two first half limiting through holes are distributed left and right and are both located above the first clearance groove 41. The upper end of the front side of the rear mold 5 is provided with two second half limiting through holes, and the inner wall of each of the two second half limiting through holes is provided with a second half spiral groove. The two second half spiral grooves are distributed left and right and are both located above the second clearance groove 54. One first half limiting through hole and one second half limiting through hole form a complete limiting through hole, and one first half spiral groove and one second half spiral groove form a complete spiral groove 6. The spiral groove 6 spirals upward from bottom to top. When the front mold 4 and the rear mold 5 approach and abut each other, the boss is located in the first relief groove 41 and the second relief groove 54. At this time, the two wire receiving posts 21 of the magnetic core 2 on the boss are exactly in the two limiting through holes, and the relative position of the magnetic core 2 and the two limiting through holes is fixed, ensuring that the enameled wire 1 can move along one end of the spiral groove 6 to the other end of the spiral groove 6, and the enameled wire 1 is smoothly wound on the wire receiving post 21.

[0052] The wire feeding device is used to feed the enameled wire 1 into the conductor hole 51. When the wire feeding device feeds the enameled wire 1 into the conductor hole 51, the wire feeding device approaches the rear mold 5 from back to front. There is a risk that the wire feeding device will deviate, which will cause the enameled wire 1 to not be aligned with the conductor hole 51.

[0053] Reference Figure 2 In some embodiments, the rear side of the rear mold 5 is provided with a guide groove 55, the opening of the guide groove 55 faces rearward, and the wire hole 51 is opened at the bottom of the guide groove 55. The guide groove 55 is used for the wire feeding device to extend into, so that the wire feeding device accurately enters the guide groove 55, the wire feeding device gets close to the rear mold 5, and the wire feeding device accurately inserts the enameled wire 1 into the wire hole 51.

[0054] Reference Figure 6In some embodiments, the rear mold 5 has an outlet 53 in the area above the two spiral grooves 6. The two outlets 53 are used to guide the two left-right distributed thread ends 11 to extend to the left and right respectively. (Refer to...) Figure 5 and Figure 6 The rear mold 5 has straightening grooves 52 on both the left and right sides. The two straightening grooves 52 extend in the left and right direction. When the two ends 11 of the two enameled wires 1 distributed on the left and right extend to the other end of the two spiral grooves 6, the two ends 11 abut against the two guide parts 53 respectively. The two guide parts 53 guide the two ends 11 to the left and right respectively, so that the two ends 11 enter the two straightening grooves 52 respectively. The inner walls of the two straightening grooves 52 are used to straighten the two ends 11 respectively.

[0055] In some embodiments, the opening of the straightening groove 52 faces forward and upward. The straightening groove 52 is used for the straightening block to extend into, and the straightening block is used to press the wire end 11 against the bottom of the straightening groove 52. The method of straightening the wire end 11 includes at least two methods: one is that the straightening block enters and exits the straightening groove 52 at a certain frequency. As the wire end 11 enters the straightening groove 52, the straightening block immediately presses the area of ​​the wire end 11 that has entered the straightening groove 52 against the bottom of the straightening groove 52, thus straightening the wire end 11, and the wire end 11 extends in the left-right direction; the other is that the straightening block remains inside the straightening groove 52, and the straightening block and the bottom of the straightening groove 52 form a straightening channel extending in the left-right direction, which guides the wire end 11 entering the straightening groove 52 to extend in the left-right direction.

[0056] In some embodiments, the straightening groove 52 has two flat surfaces and an arc surface that connects the two flat surfaces. The arc surface and the two flat surfaces are parallel to each other in the left and right directions. The radius of the arc surface is equal to the radius of the enameled wire 1. The wire end 11 abuts against the arc surface, and the arc surface straightens the wire end 11. With the two flat surfaces, the straightening block can move along the flat surfaces to enter and exit the straightening groove 52. The two flat surfaces can guide the direction of movement of the straightening block.

[0057] It is conceivable that the two straightening slots 52 are on the same straight line, so that the two wire ends 11 on the magnetic core 2 are on the same straight line.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A winding die, comprising: The clamp (3) is configured to mount the magnetic core (2) that extends vertically along the wire receiving post (21); The front mold (4) and the rear mold (5) are respectively located on the front and rear sides of the fixture (3). The front mold (4) and the rear mold (5) can move in the front-back direction to approach or move away from the fixture (3). The front mold (4) and the rear mold (5) together form two left-right distributed limiting through holes. The two limiting through holes are respectively used for the two wire receiving posts (21) to pass through. The inner walls of the two limiting through holes are provided with spiral grooves (6), and the axial direction of the two spiral grooves (6) is extended in the up-down direction. The rear mold (5) is provided with two wire holes (51) that are extended in the front-back direction. The two wire holes (51) are respectively connected to one end of the two spiral grooves (6). The two wire holes (51) are respectively used for the two enameled wires (1) to pass through.

2. The winding die according to claim 1, characterized in that, The rear mold (5) has an outlet (53) in the area above the two spiral grooves (6). The two outlets (53) are used to guide the two left and right distributed wire ends (11) to extend to the left and right respectively. The rear mold (5) has straightening grooves (52) on both the left and right sides. The two straightening grooves (52) extend in the left and right direction. The inner wall of the straightening groove (52) is used to straighten the wire ends (11).

3. A winding die according to claim 2, characterized in that, The opening of the straightening groove (52) faces forward and upward. The straightening groove (52) is used for the straightening block to extend into. The straightening block is used to press the wire end (11) against the bottom of the straightening groove (52).

4. A winding die according to claim 2 or 3, characterized in that, The straightening groove (52) has two flat surfaces and an arc surface that connects the two flat surfaces. The arc surface and the two flat surfaces are parallel to each other in the left and right directions. The radius of the arc surface is equal to the radius of the enameled wire (1).

5. A winding die according to claim 1, characterized in that, The rear side of the front mold (4) is provided with two first half limiting through holes, and the inner wall of each of the two first half limiting through holes is provided with a first half spiral groove. The front side of the rear mold (5) is provided with two second half limiting through holes, and the inner wall of each of the two second half limiting through holes is provided with a second half spiral groove. One first half limiting through hole and one second half limiting through hole are combined to form a complete limiting through hole. One first half spiral groove and one second half spiral groove are combined to form a complete spiral groove (6).

6. A winding die according to claim 5, characterized in that, The cross-sections of both the first and second semi-spiral grooves are semi-circular.

7. A winding die according to claim 1, 5, or 6, characterized in that, The clamp (3) is provided with a boss, and the upper surface of the boss is provided with a limiting groove (31) for limiting the lower end of the magnetic core (2).

8. A winding die according to claim 7, characterized in that, The lower end of the rear side of the front mold (4) is provided with a first clearance groove (41), and the lower end of the front side of the rear mold (5) is provided with a second clearance groove (54). Both the first clearance groove (41) and the second clearance groove (54) are used for the boss to extend into.

9. A winding die according to claim 1, characterized in that, The rear side of the rear mold (5) is provided with a guide groove (55), the opening of the guide groove (55) faces rearward, the wire hole (51) is opened at the bottom of the guide groove (55), the guide groove (55) is used for the wire feeding device to extend into, and the wire feeding device is used to feed the enameled wire (1) into the wire hole (51).

10. A winding die according to claim 1, characterized in that, The inner wall of the wire hole (51) and the inner wall of one end of the spiral groove (6) have an intersection point, and the tangent direction of the inner wall of the spiral groove (6) at the intersection point is parallel to the axial direction of the wire hole (51).

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