Winding mold and winding device for special-shaped coil

Abstract

The winding mold comprises a left special-shaped mold core, a right special-shaped mold core, a mandrel, a fixing assembly and a tip, the left special-shaped mold core and the right special-shaped mold core are of the same mold core structure, the mold core structure is of a plate-shaped structure, a through hole is formed in the middle of the mold core structure, and the section of the outermost side of the mold core structure is of a special-shaped pattern; the periphery of the mold core structure is of a boss-shaped structure, and comprises a convex side and a concave side; the concave sides of the left special-shaped mold core and the right special-shaped mold core are connected with each other to form a winding groove; the mandrel penetrates through middle through holes of the left special-shaped mold core and the right special-shaped mold core, two ends of the whole of the left special-shaped mold core and the right special-shaped mold core are respectively fixed by a main body of the mandrel and a fixing component fixed on the mandrel, one end of the mandrel is connected by external rotating equipment, and the other end of the mandrel is propped against the tip. Compared with the prior art, the device has the advantages that the coil winding and demolding processes are more convenient, the structure is simple, and stability and reliability are achieved.

Description

Technical Field

[0001] The present invention relates to the field of winding structures, and in particular to a winding die and a winding device for a special-shaped coil. Background Art

[0002] During the manufacturing process of an electric motor, the stator coil needs to be first wound on a formed die, and after winding, it needs to be demolded to obtain the wound coil.

[0003] For the existing coil winder and demolding structure, reference can be made to a demolding device for a telescopic winding die of a transformer disclosed in the invention with the publication number CN114068172A, which includes a telescopic winding die, a winding die tilting and rotating mechanism, a tilting mechanism and a demolding mechanism. Winding die tilting and rotating mechanisms are arranged on the ground at both ends of the telescopic winding die. The telescopic winding die is clamped into the winding die tilting and rotating mechanism, and the telescopic winding die is deflected by the winding die tilting and rotating mechanism, so as to change the horizontally placed telescopic winding die into a vertically arranged one. The bottom of one of the winding die tilting and rotating mechanisms is hinged to the ground, and a tilting mechanism is arranged between the winding die tilting and rotating mechanism and the ground; there is no need for workers to rotate the telescopic winding die, which reduces the operation difficulty of workers and improves safety and production efficiency.

[0004] Most of the existing above-mentioned solutions regard the winding die and the demolding mechanism as two components. During demolding, it is necessary to take out the winding die wound with the coil and transfer it to the demolding mechanism for demolding, which is cumbersome and inconvenient to operate and affects the work efficiency. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the existing technology that the winding die structure is complex and the demolding is cumbersome, and to provide a winding die and a winding device for a special-shaped coil.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A winding die for a special-shaped coil includes a left special-shaped die core, a right special-shaped die core, a mandrel, a fixing component and a center point. Both the left special-shaped die core and the right special-shaped die core have the same die core structure. This die core structure is a plate-like structure, with a through hole in the middle, and the outermost cross-section is a special-shaped pattern. The four sides of the die core structure are all in a convex structure, including a protruding side and a concave side; the concave sides of the left special-shaped die core and the right special-shaped die core are connected to each other to form a winding groove.

[0008] The mandrel passes through the middle through holes of the left special-shaped die core and the right special-shaped die core. The two ends of the whole of the left special-shaped die core and the right special-shaped die core are respectively fixed by the main body of the mandrel and the fixing component fixed on the mandrel. One end of the mandrel is connected to an external rotating device, and the other end is abutted by the center point.

[0009] Further, both the left special-shaped core and the right special-shaped core are made of hard elastic materials, which include rubber and plastic.

[0010] Further, the winding die further includes one or more round bars, and one or more notches matching the round bars are circumferentially distributed on the core structure, and each round bar is respectively installed in the corresponding notches of the left special-shaped core and the right special-shaped core.

[0011] Further, the number of notches on the core structure is multiple, and each notch is evenly distributed along the circumference of the core structure.

[0012] Further, the fixing assembly includes a gasket and a nut, both the gasket and the nut are installed on the mandrel, and the nut abuts against the left special-shaped core or the right special-shaped core through the gasket.

[0013] Further, the end of the mandrel is provided with a groove matching the shape of the top of the center punch, and the top of the center punch is conical.

[0014] Further, a gap is left at the connection between the left special-shaped core and the right special-shaped core.

[0015] Further, the gap is within the range of 1.5 - 3 mm.

[0016] Further, the special-shaped pattern of the outermost cross-section of the core structure corresponds to the shape of the special-shaped coil to be wound.

[0017] The present invention also provides a winding device, including a winding die for a special-shaped coil as described above.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) The winding die of the present invention is formed by splicing the completely identical left special-shaped core and right special-shaped core. A through hole is provided in the middle of the model and fixed by a mandrel. The outside of the core is a special-shaped pattern and one side is sunken, so as to form a special-shaped winding groove after splicing to wind a special-shaped coil;

[0020] After the coil winding is completed, the solution of the present invention can pull out the mandrel. Since the core is made of hard elastic material and the coil is located on one side of the core, the core will move closer to the middle under the extrusion of the coil stress, realizing the automatic separation of the coil, without the need to transfer to a demoulding mechanism for demoulding. The coil winding and demoulding processes are more convenient, and the structure is simple, stable and reliable.

[0021] (2) The present invention cleverly and conveniently realizes the shape matching of the two special-shaped models by correspondingly arranging notches on the two cores and placing round bars in the corresponding notches of the two cores, which is convenient for accurately and reliably winding special-shaped coils.

[0022] (3) A gap is left at the connection of the left special-shaped die core and the right special-shaped die core in the present invention, which is more convenient for the left and right die cores to move closer to the center, realizing rapid demoulding. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of a winding die for a special-shaped coil provided in an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of a right special-shaped die core provided in an embodiment of the present invention;

[0025] Figure 3 It is a partial sectional schematic diagram of a right special-shaped die core provided in an embodiment of the present invention;

[0026] In the figure, 1 is the left special-shaped die core, 2 is the right special-shaped die core, 201 is the middle through hole, 202 is the convex side, 203 is the concave side, 204 is the notch, 3 is the mandrel, 4 is the gasket, 5 is the nut, 6 is the tip, 7 is the winding groove, and 8 is the gap. Detailed Embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0031] It should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0032] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0033] Embodiment 1

[0034] As Figures 1 - 3 shown, this embodiment provides a winding die for a special-shaped coil, including a left special-shaped die core 1, a right special-shaped die core 2, a mandrel 3, a fixing assembly and a tip 6. The left special-shaped die core 1 and the right special-shaped die core 2 have the same die core structure. This die core structure is a plate-like structure, with a through hole 201 in the middle, and the outermost cross-section is a special-shaped pattern. The four sides of the die core structure are all convex structures, including a protruding side 202 and a concave side 203; the concave sides 203 of the left special-shaped die core 1 and the right special-shaped die core 2 are connected to each other to form a winding groove 7.

[0035] The mandrel 3 passes through the middle through holes 201 of the left special-shaped die core 1 and the right special-shaped die core 2. The two ends of the whole of the left special-shaped die core 1 and the right special-shaped die core 2 are fixed by the main body of the mandrel 3 and the fixing assembly fixed on the mandrel 3 respectively. One end of the mandrel 3 is connected to an external rotating device, and the other end is abutted by the tip 6.

[0036] Both the left special-shaped die core 1 and the right special-shaped die core 2 are made of hard elastic materials, having a relatively high elastic modulus and hardness, capable of withstanding large pressures and deformations, and at the same time having good resilience; they can be selected as rubber and plastic.

[0037] The winding die of the special-shaped coil provided by this solution is composed of exactly the same left special-shaped die core 1 and right special-shaped die core 2. The two die cores are positioned by inserting the core shaft 3 into the through holes in the left special-shaped die core 1 and the right special-shaped die core 2, and the two die cores are clamped by the abutment between the main body of the core shaft 3 and the fixing component; the core shaft 3 can be driven by an external rotating device to drive the winding die to rotate to wind the special-shaped coil in the special-shaped winding groove;

[0038] When demolding the coil, the core shaft 3 can be pulled out. Due to the hard elastic material properties of the left special-shaped die core 1 and the right special-shaped die core 2, under the extrusion of the coil stress, the concave side 203 will move closer to the middle. At this time, the left and right die cores and the coil will gradually slide relative to each other, so that the coil will automatically disengage and complete the coil demolding.

[0039] The special-shaped pattern on the outermost cross-section of the die core structure is set according to the shape of the special-shaped coil to be wound.

[0040] As a preferred implementation manner, since the outermost sides of the left special-shaped die core 1 and the right special-shaped die core 2 are both special-shaped, it is necessary to accurately match the positions of the two die cores; this solution provides that the winding die further includes one or more round rods, and there are one or more notches 204 on the circumferential distribution of the die core structure that cooperate with the round rods, and each round rod is respectively installed in the corresponding notch 204 of the left special-shaped die core 1 and the right special-shaped die core 2.

[0041] The number of notches 204 on the die core structure is multiple, and each notch 204 is evenly distributed along the circumferential direction of the die core structure.

[0042] After the two die cores are positioned by inserting the core shaft into the through holes in the left special-shaped die core 1 and the right special-shaped die core 2, the round rods are placed in the corresponding notches 204 of the left special-shaped die core 1 and the right special-shaped die core 2, and the outer shapes of the two die cores can be made to fit, so as to accurately and reliably wind the special-shaped coil.

[0043] In this embodiment, the special-shaped coil to be wound is a triangle with rounded corners. Therefore, the outermost shapes of the left special-shaped die core 1 and the right special-shaped die core 2 are both triangles with rounded corners, and notches 204 are provided in the middle of the three sides of the outermost sides of the left special-shaped die core 1 and the right special-shaped die core 2 to achieve accurate outer shape position matching.

[0044] The fixing component is installed on the core shaft 3 and is used to cooperate with the main body part of the core shaft to clamp the left special-shaped die core 1 and the right special-shaped die core 2. Any fixing component with the function of being fixed on the core shaft 3 can be selected, and there is no unique limitation. It can be a nut structure, a clamping structure, an adhesive fixing structure, etc. Optionally, the fixing component includes a gasket 4 and a nut 5. The gasket 4 and the nut 5 are both installed on the core shaft 3, and the nut 5 abuts against the left special-shaped die core 1 or the right special-shaped die core 2 through the gasket 4.

[0045] The main body end of the mandrel 3 can be fixed on an external rotating device, and the other end is abutted by the center point 6. The external rotating device can drive the mandrel 3, the left special-shaped die core 1, the right special-shaped die core 2, etc. on it to rotate together, and wind the special-shaped coil in the winding groove.

[0046] To achieve effective abutment with the center point 6, a groove matching the shape of the top of the center point 6 is provided at the end of the mandrel 3. The top of the center point 6 is conical, which can achieve stable rotation while maintaining reliable abutment.

[0047] As a preferred embodiment, after the mandrel 3 is pulled out, a gap 8 is left at the connection between the left and right die cores to facilitate the left and right die cores to move closer to the center, so that the left and right die cores and the coil can be effectively separated automatically.

[0048] The gap 8 can be selected within the range of 1.5 - 3 mm, and can be correspondingly set according to the size of the specific winding die. In this embodiment, the gap is set to 2 mm.

[0049] This solution also provides a winding device, which includes a winding die for a special-shaped coil as described above. The mandrel is fixed by an external rotating device and the center point 6, and a wire harness is placed in the winding groove formed by the two dies. The external rotating device drives the mandrel and the two die cores to rotate to realize the winding of the special-shaped coil.

[0050] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. A winding die for a special-shaped coil, characterized in that, It includes a left special-shaped die core (1), a right special-shaped die core (2), a mandrel (3), a fixing component, and a center point (6). The left special-shaped die core (1) and the right special-shaped die core (2) have the same die core structure. This die core structure is a plate-like structure, with a through hole (201) in the middle, and the outermost cross-section is a special-shaped pattern. The periphery of the die core structure is a boss-like structure, including a protruding side (202) and a concave side (203); the concave sides (203) of the left special-shaped die core (1) and the right special-shaped die core (2) are connected to each other to form a wire winding groove (7). The mandrel (3) passes through the middle through holes (201) of the left special-shaped die core (1) and the right special-shaped die core (2). The two ends of the left special-shaped die core (1) and the right special-shaped die core (2) as a whole are fixed by the main body of the mandrel (3) and the fixing component fixed on the mandrel (3). One end of the mandrel (3) is connected to an external rotating device, and the other end is abutted by the center point (6).

2. The winding die for the special-shaped coil according to claim 1, characterized in that, The left special-shaped die core (1) and the right special-shaped die core (2) are both made of a hard elastic material, and this hard elastic material includes rubber and plastic.

3. The winding die for the special-shaped coil according to claim 1, characterized in that, The wire winding die further includes one or more round rods. One or more notches (204) that cooperate with the round rods are circumferentially distributed on the die core structure, and each round rod is respectively installed in the corresponding notches (204) of the left special-shaped die core (1) and the right special-shaped die core (2).

4. The winding die for a special-shaped coil according to claim 3, characterized in that, The number of notches (204) on the die core structure is multiple, and each notch (204) is evenly distributed along the circumference of the die core structure.

5. The winding die for the special-shaped coil according to claim 1, characterized in that, The fixing component includes a gasket (4) and a nut (5). The gasket (4) and the nut (5) are both installed on the mandrel (3), and the nut (5) abuts the left special-shaped die core (1) or the right special-shaped die core (2) through the gasket (4).

6. The winding die for a special-shaped coil according to claim 1, wherein, The end of the mandrel (3) is provided with a groove that matches the shape of the top of the center point (6), and the top of the center point (6) is conical.

7. A winding die for a special-shaped coil according to claim 1, characterized in that, A gap (8) is left at the connection of the left special-shaped die core (1) and the right special-shaped die core (2).

8. The winding die of a special-shaped coil according to claim 7, characterized in that, The gap (8) is within the range of 1.5 - 3 mm.

9. The winding die for the special-shaped coil according to claim 1, characterized in that, The special-shaped pattern of the outermost cross-section of the die core structure corresponds to the shape of the special-shaped coil to be wound with wire.

10. A winding device, characterized in that, It includes a wire winding die for a special-shaped coil as described in any one of claims 1 - 9.

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