Stator winding mold

Abstract

The present application relates to the technical field of motor production equipment, and discloses a stator winding mold, which comprises an inner mold and an outer mold, wherein the outer mold comprises two left-right symmetrically arranged guide plates, the outer side surface of the guide plate is provided with a guide curved surface, the inner side of the guide plate is provided with a guide groove, the two guide grooves jointly form a guide cavity capable of accommodating the inner mold, the front end of the guide cavity is provided with a giving-up opening for the insulation bushing of the motor stator to extend into, and the inner mold can move in the guide cavity towards or away from the giving-up opening, so that the two guide plates are close to or away from each other. The stator winding mold provided by the present application can flexibly adjust the feeding depth and height of winding, improve the winding precision, and can adapt to insulation bushings of various sizes, and has better compatibility.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing equipment technology, and more particularly to stator winding molds. Background Technology

[0002] Currently, manual operation still accounts for a large proportion of stator manufacturing in my country, resulting in low automation levels. This not only leads to low production efficiency but also makes it difficult to guarantee product consistency and reliability. In recent years, automatic stator winding machines have gradually developed to achieve automated stator winding and improve production efficiency.

[0003] However, fully automatic stator winding machines still have some problems. On the one hand, the accuracy of stator winding is not high, and there are errors in the winding spacing and number of layers; on the other hand, a stator winding mold can often only be adapted to one type of motor stator. When the production line switches to produce another type of motor stator, the stator winding mold often needs to be changed accordingly, resulting in low compatibility.

[0004] Therefore, stator winding molds are urgently needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] Based on the above, the purpose of this invention is to provide a stator winding die that can flexibly adjust the winding feed depth and height, improve winding accuracy, and adapt to various sizes of insulating bushings, thus having better compatibility.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Firstly, providing stator winding molds, including:

[0008] Inner mold; and

[0009] The outer mold includes two guide plates symmetrically arranged on the left and right. The outer side of the guide plate is provided with a guide arc surface, and the inner side of the guide plate is provided with a guide groove. The two guide grooves together form a guide cavity that can accommodate the inner mold. The front end of the guide cavity is provided with a clearance opening into which the insulating bushing of the motor stator extends. The inner mold can move toward or away from the clearance opening in the guide cavity so that the two guide plates move closer to or further away from each other.

[0010] As an optional technical solution for stator winding mold, the inner mold is provided with a first pushing surface on the left and right sides, and a second pushing surface is provided at the bottom of the guide groove. The first pushing surface abuts against the second pushing surface, and both the first pushing surface and the second pushing surface are inclined from the outside to the inside in the direction close to the clearance opening.

[0011] As an optional technical solution for stator winding mold, the stator winding mold further includes a mold base and two elastic members. Both guide plates are horizontally slidably connected to the mold base. The two elastic members are arranged one-to-one with the two guide plates. One end of the elastic member abuts or connects to the mold base, and the other end of the elastic member abuts or connects to its corresponding guide plate. The elastic member has the tendency to drive the guide plate to press against the inner mold.

[0012] As an optional technical solution for stator winding molds, the stator winding mold further includes:

[0013] Two spring cover plates are fixedly installed on the side walls of the mold base on both sides. The guide plate is provided with a first limiting groove, and the spring cover plate is provided with a second limiting groove. One end of the elastic element passes through the first limiting groove, and the other end of the elastic element passes through the second limiting groove.

[0014] As an optional technical solution for stator winding mold, both guide plates are slidably connected to the mold base via cross roller guides. The mold base is connected to the fixed end of the cross roller guides, and the guide plates are connected to the movable end of the cross roller guides.

[0015] As an optional technical solution for the stator winding mold, the mold base has a mounting groove on the side facing the outer mold, and the guide plate has a mounting boss on the side facing the mold base. The mounting boss and the side wall of the mounting groove together form a receiving groove. The cross roller guide rail is disposed in the receiving groove. The stator winding mold further includes:

[0016] A guide rail tensioning wedge is installed in the receiving groove, and the side wall of the guide rail tensioning wedge presses against the side wall of the fixed end of the cross roller guide rail.

[0017] As an optional technical solution for stator winding mold, the mold base is provided with clearance through holes that extend through the front and rear sides. The clearance through holes are connected to the guide cavity, and the inner mold can be connected to the linear drive component that drives the inner mold to move back and forth through the clearance through holes.

[0018] As an optional technical solution for stator winding mold, the guide plate further includes a width limiting part, which is disposed inside the relief opening. The width limiting part on one guide plate can abut against another guide plate to limit the width of the relief opening to be greater than the thickness of the winding portion of the insulating bushing.

[0019] As an optional technical solution for stator winding molds, the guide arc surface is configured as an arc surface structure that is concave from the outside to the inside.

[0020] As an optional technical solution for stator winding mold, the inner mold is provided with a positioning groove on the side facing the relief opening. The positioning groove is adapted to the insulating bushing, and the positioning groove can limit the horizontal and vertical positions of the insulating bushing extending therein.

[0021] The beneficial effects of this invention are as follows:

[0022] The stator winding mold provided by this invention includes a movable inner mold and an outer mold. During operation, the insulating bushing of the motor stator extends into the guide cavity through a clearance opening. The winding fork rotates around a horizontal axis around the periphery of the stator winding mold, and the enameled wire slides down the guide arc surface onto the insulating bushing to achieve winding turn by turn. The stator winding mold can move back and forth as a whole to adjust the winding depth. Furthermore, the inner mold can move towards or away from the clearance opening, which not only limits the depth of the insulating bushing extending into the guide cavity but also drives the two guide plates to move closer or further apart. This allows for adaptive adjustment of the distance between the guide plates and the winding surface on the insulating bushing according to the number of winding layers, enabling the enameled wire to accurately slide down the guide arc surface to the corresponding position. In summary, the stator winding mold provided by this invention can flexibly adjust the winding feed depth and height, resulting in higher winding accuracy. In addition, by adjusting the position of the inner mold and the distance between the two guide plates, it can accommodate insulating bushings of various sizes, providing better compatibility. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the stator winding mold and the motor stator provided by the present invention.

[0025] Figure 2 This is a cross-sectional view of the stator winding mold and the motor stator provided by the present invention.

[0026] Figure 3 This is a schematic diagram of the stator winding mold provided by the present invention;

[0027] Figure 4 This is an exploded structural diagram of the stator winding mold provided by the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the inner mold provided by the present invention;

[0029] Figure 6This is a schematic diagram of the structure of the outer mold provided by the present invention. Figure 1 ;

[0030] Figure 7 This is a schematic diagram of the structure of the outer mold provided by the present invention. Figure 2 ;

[0031] Figure 8 This is a side view of the stator winding mold provided by the present invention.

[0032] In the picture:

[0033] 100. Stator winding mold; 200. Motor stator; 210. Insulating bushing; 220. Enamelled wire;

[0034] 1. Inner mold; 11. First ejector surface; 12. Positioning groove; 13. Positioning protrusion; 14. Connecting hole;

[0035] 20. Outer mold; 2. Guide plate; 21. Guide arc surface; 22. Guide groove; 23. Guide cavity; 24. Relief opening; 25. Second push surface; 26. First limiting groove; 27. Relief notch; 28. Mounting boss; 29. ​​Width limiting part;

[0036] 3. Mold base; 31. Mounting slot; 32. Clearance through hole;

[0037] 4. Elastic element; 5. Cross roller guide rail; 6. Guide rail tensioning wedge block; 7. Support lug spring cover plate; 71. Second limit groove. Detailed Implementation

[0038] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail 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] like Figures 1-8As shown, this embodiment provides a stator winding mold 100, which is installed on an automatic stator winding machine and cooperates with a winding fork to automatically wind enameled wire 220 onto the insulating bushing 210 of the motor stator 200. The stator winding mold 100 includes an inner mold 1, an outer mold 20, and a mold base 3. The outer mold 20 includes two guide plates 2 symmetrically arranged on the left and right sides. Both guide plates 2 are horizontally slidably connected to the mold base 3. The outer side of the guide plate 2 is provided with a guide arc surface 21, and the inner side of the guide plate 2 is provided with a guide groove 22. The two guide grooves 22 together form a guide cavity 23 that can accommodate the inner mold 1. The front end of the guide cavity 23 is provided with a clearance opening 24 into which the insulating bushing 210 of the motor stator 200 extends. The inner mold 1 can move toward or away from the clearance opening 24 within the guide cavity 23 so that the two guide plates 2 move closer to or further away from each other.

[0040] Specifically, the stator winding mold 100 provided in this embodiment includes an inner mold 1 and an outer mold 20 that are movably arranged. During operation, such as... Figure 1 and Figure 2 As shown, the insulating bushing 210 of the motor stator 200 extends into the guide cavity 23 through the clearance opening 24. The winding fork rotates around the horizontal axis around the periphery of the stator winding mold 100, and the enameled wire 220 slides down onto the insulating bushing 210 along the guide arc surface 21 to achieve winding one turn at a time. The stator winding mold 100 can move back and forth as a whole to adjust the winding depth. Furthermore, the inner mold 1 can move toward or away from the clearance opening 24, which not only limits the depth of the insulating bushing 210 of the motor stator 200 into the guide cavity 23, but also drives the two guide plates 2 to move closer or further apart, thereby adaptively adjusting the distance between the guide plate 2 and the winding surface on the insulating bushing 210 according to the change in the number of winding layers, so that the enameled wire 220 can slide precisely down to the corresponding position along the guide arc surface 21. In summary, the stator winding die 100 provided in this embodiment can flexibly adjust the winding feed depth and height, resulting in higher winding accuracy. In addition, by adjusting the position of the inner die 1 and the distance between the two guide plates 2, it can adapt to various sizes of insulating bushings 210, thus providing better compatibility.

[0041] For example, such as Figure 5 As shown, the inner mold 1 has a positioning groove 12 on the side facing the relief opening 24. The positioning groove 12 is adapted to the insulating bushing 210 and can limit the horizontal and vertical positions of the insulating bushing 210 extending into it. Specifically, the inner mold 1 has four positioning protrusions 13 on the side facing the relief opening 24. The four positioning protrusions 13 are located at the four corners to form the positioning groove 12. The four positioning protrusions 13 cooperate to restrict the horizontal and vertical movement of the insulating bushing 210.

[0042] Preferred, such as Figure 6As shown, the guide arc surface 21 is configured as an arc surface structure that is concave from the outside to the inside, which reduces the resistance to the enameled wire 220 sliding down to the insulating bushing 210.

[0043] For example, such as Figures 4-7 As shown, the inner mold 1 has a first pushing surface 11 on its left and right sides, and a second pushing surface 25 at the bottom of the guide groove 22. The first pushing surface 11 and the second pushing surface 25 abut against each other, and both the first pushing surface 11 and the second pushing surface 25 are inclined from the outside to the inside in the direction close to the clearance opening 24. Specifically, as Figure 5 As shown, the inner mold 1 is provided with a connecting hole 14. The inner mold 1 is connected to the output end of linear drive components such as electric push rods through the connecting hole 14. During the winding operation, the linear drive components drive the inner mold 1 to move forward toward the clearance opening 24. The first push surface 11 on both sides of the inner mold 1 moves forward relative to the two second push surfaces 25, so that the two guide plates 2 move away from each other, thereby increasing the distance between the guide plate 2 and the winding surface on the insulating bushing 210, so that the distance between the guide plate 2 and the target winding surface is always kept consistent, so as to more accurately wind the multilayer enameled wire 220.

[0044] Furthermore, such as Figures 2-4 As shown, the stator winding mold 100 also includes two elastic elements 4, which are correspondingly arranged with two guide plates 2. One end of the elastic element 4 abuts or connects to the mold base 3, and the other end of the elastic element 4 abuts or connects to its corresponding guide plate 2. The elastic element 4 has the tendency to drive the guide plate 2 to press against the inner mold 1. Specifically, when the linear drive unit drives the inner mold 1 to move backward away from the clearance opening 24, the two elastic elements 4 respectively push the two guide plates 2 to move horizontally toward the inner mold 1, so that the two guide plates 2 move closer to each other, thereby reducing the distance between the guide plate 2 and the winding surface on the insulating bushing 210, so that the distance between the guide plate 2 and the target winding surface remains consistent, so as to wind the multilayer enameled wire 220 more accurately, and at the same time, it also plays the role of pushing the two guide plates 2 to reset.

[0045] Preferably, the elastic element 4 is a rectangular compression spring.

[0046] For example, such as Figures 2-4 As shown, the stator winding mold 100 also includes two lug spring cover plates 7. The two lug spring cover plates 7 are respectively fixedly installed on the side walls of both sides of the mold base 3. The guide plate 2 is provided with a first limiting groove 26. The lug spring cover plate 7 is provided with a second limiting groove 71 extending in the horizontal direction and a clearance notch 27. The second limiting groove 71 is connected to the clearance notch 27, and the first limiting groove 26 and the second limiting groove 71 are arranged facing each other. The elastic member 4 passes through the clearance notch 27. One end of the elastic member 4 passes through the first limiting groove 26 and presses against the bottom of the first limiting groove 26. The other end of the elastic member 4 passes through the second limiting groove 71 and presses against the bottom of the second limiting groove 71.

[0047] For example, the two spring cover plates 7 are locked to the side walls of the mold base 3 by bolts and locking bolts respectively.

[0048] For example, such as Figure 3 and Figure 4 As shown, both guide plates 2 are slidably connected to the mold base 3 via cross roller guides 5. The cross roller guides 5 extend horizontally and include a fixed end and a movable end. The mold base 3 is fixedly connected to the fixed end of the cross roller guides 5 by locking bolts, and the guide plates 2 are fixedly connected to the movable end of the cross roller guides 5 by locking bolts. The cross roller guides 5 have advantages such as low friction, high stability, small deformation, high rigidity, long service life, and high precision, which helps improve the reliability of the sliding of the guide plates 2.

[0049] Furthermore, such as Figure 4 , Figures 6-8 As shown, the mold base 3 has an installation groove 31 on the side facing the outer mold 20, and the guide plate 2 has an installation boss 28 on the side facing the mold base 3. The installation boss 28 and the side wall of the installation groove 31 together form a receiving groove. The cross roller guide rail 5 is disposed in the receiving groove. The stator winding mold 100 also includes a guide rail tensioning wedge 6, which is installed in the receiving groove, and the side wall of the guide rail tensioning wedge 6 presses against the side wall of the fixed end of the cross roller guide rail 5. The setting of the guide rail tensioning wedge 6 can improve the installation position accuracy of the cross roller guide rail 5, thereby improving the control accuracy of the sliding direction and sliding distance of the guide plate 2, and further improving the winding accuracy.

[0050] For example, such as Figures 2-4 , Figures 6-8 As shown, each guide plate 2 is slidably connected to the mold base 3 via at least two crossed roller guides 5 to improve sliding stability. In this embodiment, each guide plate 2 is slidably connected to the mold base 3 via two crossed roller guides 5. Each guide plate 2 has two corresponding receiving slots, and the guide plate 2 has two mounting bosses 28. One receiving slot has a guide rail tensioning wedge 6, while the other receiving slot does not have a guide rail tensioning wedge 6. This achieves the effect of controlling the installation accuracy of the guide rail tensioning wedge 6 through one guide rail tensioning wedge 6, and the other guide rail tensioning wedge 6 is adjusted accordingly, which facilitates installation and sliding accuracy control.

[0051] For example, such as Figure 4 As shown, the mold base 3 is provided with a clearance through hole 32 that runs through the front and rear sides. The clearance through hole 32 is connected to the guide cavity 23. The inner mold 1 can be connected to the linear drive component that drives the inner mold 1 to move back and forth through the clearance through hole 32.

[0052] For example, such as Figure 6As shown, the guide plate 2 also includes a width limiting part 29, which is disposed inside the relief opening 24. The width limiting part 29 on one guide plate 2 can abut against another guide plate 2 to limit the width of the relief opening 24 to be greater than the thickness of the winding portion of the insulating bushing 210, so as to avoid the distance between the bodies of the two guide plates 2 being too small and thus contacting or interfering with the insulating bushing 210.

[0053] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A stator winding die, characterized in that, include: Inner mold (1); as well as The outer mold (20) includes two guide plates (2) arranged symmetrically on the left and right. The outer side of the guide plate (2) is provided with a guide arc surface (21), and the inner side of the guide plate (2) is provided with a guide groove (22). The two guide grooves (22) together form a guide cavity (23) that can accommodate the inner mold (1). The front end of the guide cavity (23) is provided with a clearance opening (24) into which the insulating bushing (210) of the motor stator (200) extends. The inner mold (1) can move toward or away from the clearance opening (24) in the guide cavity (23) so that the two guide plates (2) move closer to or further away from each other. The stator winding mold (100) also includes a mold base (3), and the two guide plates (2) are horizontally slidably connected to the mold base (3); Both guide plates (2) are slidably connected to the mold base (3) via cross roller guides (5). The mold base (3) is connected to the fixed end of the cross roller guides (5), and the guide plates (2) are connected to the movable end of the cross roller guides (5). The mold base (3) has an installation groove (31) on the side facing the outer mold (20), and the guide plate (2) has an installation boss (28) on the side facing the mold base (3). The installation boss (28) and the side wall of the installation groove (31) together form a receiving groove. The cross roller guide rail (5) is disposed in the receiving groove. The stator winding mold (100) also includes: The guide rail tensioning wedge (6) is installed in the receiving groove, and the side wall of the guide rail tensioning wedge (6) presses against the side wall of the fixed end of the cross roller guide (5).

2. The stator winding die according to claim 1, characterized in that, The inner mold (1) has a first push surface (11) on its left and right sides, and a second push surface (25) is provided at the bottom of the guide groove (22). The first push surface (11) and the second push surface (25) abut against each other, and both the first push surface (11) and the second push surface (25) are inclined from the outside to the inside in the direction close to the clearance opening (24).

3. The stator winding die according to claim 2, characterized in that, The stator winding mold (100) also includes two elastic elements (4), which are arranged one-to-one with the two guide plates (2). One end of the elastic element (4) abuts or connects to the mold base (3), and the other end of the elastic element (4) abuts or connects to its corresponding guide plate (2). The elastic element (4) has the tendency to drive the guide plate (2) to press against the inner mold (1).

4. The stator winding die according to claim 3, characterized in that, The stator winding die (100) also includes: Two spring cover plates (7) are fixedly installed on the side walls of the mold base (3) respectively. The guide plate (2) is provided with a first limiting groove (26) and the spring cover plate (7) is provided with a second limiting groove (71). One end of the elastic element (4) passes through the first limiting groove (26) and the other end of the elastic element (4) passes through the second limiting groove (71).

5. The stator winding die according to claim 3, characterized in that, The mold base (3) is provided with a clearance through hole (32) that runs through the front and rear sides. The clearance through hole (32) is connected to the guide cavity (23). The inner mold (1) can be connected to the linear drive component that drives the inner mold (1) to move back and forth through the clearance through hole (32).

6. The stator winding die according to any one of claims 1-5, characterized in that, The guide plate (2) further includes a width limiting part (29), which is disposed inside the relief opening (24). The width limiting part (29) on one guide plate (2) can abut against another guide plate (2) to limit the width of the relief opening (24) to be greater than the thickness of the winding portion of the insulating bushing (210).

7. The stator winding die according to any one of claims 1-5, characterized in that, The guide arc surface (21) is configured as an arc surface structure that is concave from the outside to the inside.

8. The stator winding die according to any one of claims 1-5, characterized in that, The inner mold (1) has a positioning groove (12) on the side facing the relief opening (24). The positioning groove (12) is adapted to the insulating bushing (210). The positioning groove (12) can limit the horizontal and vertical positions of the insulating bushing (210) extending therein.

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