A tearing structure for processing a stator core

Abstract

The utility model discloses a kind of tear structure of processing stator core, belong to stator core processing equipment technical field, including upper die (1) and lower die (2), upper die (1) is provided with upper die holder (3), male die (4), unloading plate (5), lower die (2) is provided with lower die holder (20), female die plate (6), female die (7) and material removal mechanism (8), male die (4) is fixedly set on upper die holder (3), through hole one (9) is provided on unloading plate (5), male die (4) is set in through hole one (9), female die (7) is set on female die plate (6), the position of female die (7) is oppositely arranged with male die (4), material removal mechanism (8) includes material pushing component (10) and elastic component (11), one end of elastic component (11) is fixedly set on lower die holder (20), other end is connected with material pushing component (10), the utility model makes the state of iron core stamping and keeps adhesion, facilitate the splicing of iron core, improve the quality of product.

Description

Technical Field

[0001] This utility model belongs to the technical field of stator core processing equipment, and relates to a stator core stamping auxiliary device, specifically a tearing structure for processing stator cores. Background Technology

[0002] The stator core is a basic structure of an electric motor. In current technology, it is usually formed by stamping material strips with a punch press and then stacking the stamped silicon steel sheets. Most stator structures on the market are closed structures, which increases the difficulty of winding, resistance and loss.

[0003] In the prior art, patent CN118508624A discloses a stator assembly, its assembly method, and an electric motor. This stator assembly includes: a cylindrical yoke core; a first toothed core and a second toothed core alternately arranged in a circumferential direction on the outer or inner wall of the yoke core; a coil winding wound at least on the first toothed core; the first toothed core and the yoke core being integrally formed; and the second toothed core being spliced ​​and connected to the yoke core. In this application, the alternating arrangement of the first toothed core integrally formed with the yoke core and the second toothed core spliced ​​and connected to the yoke core allows the winding coil to be wound on the first toothed core before the second toothed core is spliced ​​and installed. This results in a larger winding space, less winding difficulty, and a higher number of turns. The splicing of the second toothed core onto the yoke core fills the gap between the two coil windings, thereby improving the overall performance of the stator assembly. However, this also affects product quality.

[0004] This structure improves the slot fill factor of the stator core, but during the processing, it is difficult for the single tooth core pieces to maintain high precision after stamping and stacking. The splicing precision of the core teeth after stacking and stamping is not high, which affects the quality of the stator core. Utility Model Content

[0005] The purpose of this utility model is to overcome the technical problems in the prior art, such as the low precision of spliced ​​single-tooth iron cores affecting product quality, and to provide a tearing structure for processing stator iron cores.

[0006] To solve the above-mentioned technical problems, this utility model provides a tearing structure for processing stator cores. The structure includes an upper die and a lower die, with the strip material disposed between the upper die and the lower die. The upper die is provided with an upper die base, a punch, and a stripper plate. The lower die is provided with a lower die base, a die plate, a die, and a stripping mechanism. One end of the punch is fixedly disposed on the upper die base. The stripper plate is provided with a through hole, and the punch is disposed in the through hole. The die is disposed on the die plate, with the die positioned opposite to the punch. The die plate is disposed on the lower die base. The stripping mechanism includes an ejector component and an elastic component. One end of the elastic component is fixedly disposed on the lower die base, and the other end is connected to the ejector component. The ejector component is disposed inside the die.

[0007] During the processing, the punch presses down to cut the strip. When the punch is lifted, the ejector component is pushed upward by the elastic component, pushing the originally separated and concave strip upward and flattening it, so that the single-tooth iron core remains in an adhered state. Although the strip is stamped into a single piece of single-tooth iron core arranged in a ring, it still maintains a complete ring state. The single-tooth iron core formed by stacking in this state greatly improves the precision of the product, facilitates the splicing of iron cores, and improves the quality of the product.

[0008] As a further improvement of this utility model, the above-mentioned tearing structure for processing stator cores includes an elastic component comprising a spring and a stop screw. The lower die base is provided with a through hole two, which communicates with the die cavity. The stop screw is located at the bottom of the through hole two and is threadedly connected to the lower die base. The ejector component includes an ejector rod and an ejector block. The ejector rod is located inside the through hole two and connected to the spring. The ejector block is located inside the die cavity.

[0009] As a further improvement of this utility model, in the above-mentioned tearing structure for processing stator cores, the bottom of the punch is provided with an inclined cutting blade, which can better cut and tear the strip during the processing and improve the processing quality.

[0010] As a further improvement of this utility model, the above-mentioned tearing structure for processing stator cores includes an upper die further comprising an upper pad plate, the upper pad plate being disposed on the lower surface of the upper die base, a groove being provided on the upper surface of the unloading plate, the upper pad plate being disposed in the groove of the unloading plate, and the punch being fixedly connected to the upper pad plate. This structural design enhances the overall stability and strength of the upper die.

[0011] As a further improvement of this utility model, the above-mentioned tearing structure for processing stator cores further includes a stripper plate in the upper die. The stripper plate is disposed below the stripper plate and has a through hole three, in which the punch is disposed. The stripper plate provides guidance for the downward trajectory of the punch during punching, and can also position the strip before punching and detach the strip after punching.

[0012] As a further improvement of this utility model, in the above-mentioned tearing structure for processing stator cores, the stripper plate is 0.5mm-2mm higher than the punch in the open mold state, which makes it easier to remove the processed strip from the punch after processing.

[0013] As a further improvement of this utility model, the above-mentioned tearing structure for processing stator cores has a top material block flush with the concave template, which ensures the stability of the material strip placement during processing and helps to improve processing accuracy.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. When processing the stator core, this structure can ensure that the stator core remains connected after being torn apart, so that single-tooth core pieces can be stacked simultaneously to form core teeth, which facilitates the accuracy of splicing single stator core pieces in subsequent processing. 2. Through the relative setting of the punch and die, the coordinated work of the ejector component and the elastic component, the processing accuracy is improved, the product quality is stable and reliable, and the performance and service life of the motor are effectively improved. Attached Figure Description

[0015] Figure 1 This is a front view of a tear-open structure for processing stator cores according to this utility model.

[0016] Figure 2 yes Figure 1 Enlarged view of section A.

[0017] The following are the reference numerals: 1. Upper mold, 2. Lower mold, 3. Upper mold base, 4. Punch, 5. Stripper plate, 6. Die plate, 7. Die, 8. Stripping mechanism, 9. Through hole one, 10. Ejector component, 11. Elastic component, 12. Through hole two, 13. Spring, 14. Stop screw, 15. Ejector rod, 16. Ejector block, 17. Upper backing plate, 18. Groove, 19. Stripper plate, 20. Lower mold base, 21. Through hole three. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Conversely, this utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model as defined in the claims. Furthermore, to provide the public with a better understanding of this utility model, certain specific details are described in detail in the following description. However, those skilled in the art will fully understand this utility model even without these detailed descriptions.

[0020] like Figure 1 , Figure 2 The diagram shows a tearing structure for processing stator cores. The structure includes an upper die 1 and a lower die 2. A strip material is disposed between the upper die 1 and the lower die 2. The upper die 1 is provided with an upper die base 3, a punch 4, a stripper plate 5, a stripper plate 19 and an upper pad 17. The lower die 2 is provided with a concave template 6, a concave die 7 and a stripping mechanism 8.

[0021] like Figure 1 , Figure 2 As shown, the upper die holder 3 is used to fix the components of the upper die 1. The upper backing plate 17 is set on the lower surface of the upper die holder 3 to support the punching force generated by the stamping punch 4. The upper surface of the stripper plate 5 is provided with a groove 18 to fix the stripper plate 19. The upper backing plate 17 is set in the groove 18 of the stripper plate 5. The punch 4 is fixedly connected to the upper backing plate 17. The stripper plate 19 is set in the groove 18 below the stripper plate 5. In the open state, the stripper plate 19 is 1mm higher than the punch 4. The stripper plate 19 is provided with a through hole 21. The punch 4 is set in the through hole 21. The setting of the stripper plate 19 makes it easier to remove the processed strip from the punch 4 after processing. The setting of the stripper plate 19 can also guide the punch 4 and press the strip before stamping for easy positioning. At the same time, this structural design enhances the overall stability and strength of the upper die 1.

[0022] like Figure 1 , Figure 2 As shown, one end of the punch 4 is fixedly mounted on the upper die holder 3, and the bottom of the punch 4 is provided with an inclined cutting blade, which can better cut and tear the strip during the processing and improve the processing quality.

[0023] like Figure 1 , Figure 2 As shown, the stripper plate 5 is provided with a through hole 9, the punch 4 is provided in the through hole 9, the die 7 is provided on the die plate 6, the die plate 6 is provided on the lower die base 20, the position of the die 7 is opposite to the punch 4, and the stripping mechanism 8 includes an ejector component 10 and an elastic component 11.

[0024] like Figure 1 , Figure 2As shown, the elastic component 11 includes a spring 13 and a retaining screw 14. The spring 13 provides elastic force to the ejector component 10, and the retaining screw 14 fixes the spring 13 and presses it down. The lower mold base 20 is provided with a through hole 12, which communicates with the die cavity 7. The retaining screw 14 is located at the bottom of the through hole 12 and is threadedly connected to the lower mold base 20. The ejector component 10 includes an ejector rod 15 and an ejector block 16. The ejector rod 15 is located in the through hole 12 and connected to the spring 13. The ejector block 16 is located in the die cavity 7. One end of the elastic component 11 is fixedly located on the lower mold base 20, and the other end is connected to the ejector component 10. The ejector component 10 is located in the die cavity 7, and the ejector block 16 is flush with the die cavity template 6, which ensures the stability of the strip placement during processing and helps to improve processing accuracy.

[0025] During the processing, the punch 4 presses down to cut the strip. When the punch 4 is lifted, the ejector 10 is pushed upward by the elastic component 11, pushing the originally separated and concave strip upward and flattening it, so that the single tooth core remains in an adhered state, which facilitates the splicing of single core pieces and improves the quality of the product.

[0026] When processing the stator core, this structure can ensure that the stator core remains connected after being torn apart, which facilitates the accuracy of individual stator cores after stacking in subsequent processing. Through the relative setting of the punch 4 and the die 7, and the coordinated work of the ejector component 10 and the elastic component 11, the processing accuracy is improved, the product quality is stable and reliable, and the performance and service life of the motor are effectively improved.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A tearing structure for processing stator cores, the structure comprising an upper die (1) and a lower die (2), wherein a strip of material is disposed between the upper die (1) and the lower die (2), characterized in that, The upper mold (1) is provided with an upper mold base (3), a punch (4), and a stripper plate (5). The lower mold (2) is provided with a lower mold base (20), a concave template (6), a concave mold (7), and a stripping mechanism (8). One end of the punch (4) is fixedly set on the upper mold base (3). The stripper plate (5) is provided with a through hole (9). The punch (4) is set in the through hole (9). The concave mold (7) is set on the concave template (6). The position of the concave mold (7) is opposite to that of the punch (4). The concave template (6) is set on the lower mold base (20). The stripping mechanism (8) includes an ejector component (10) and an elastic component (11). One end of the elastic component (11) is fixedly set on the lower mold base (20), and the other end is connected to the ejector component (10). The ejector component (10) is set inside the concave mold (7).

2. The tearing structure for processing stator cores according to claim 1, characterized in that, The elastic component (11) includes a spring (13) and a stop screw (14). The lower mold base (20) is provided with a through hole (12), which is connected to the die (7). The stop screw (14) is located at the bottom of the through hole (12) and is threadedly connected to the lower mold base (20). The ejector component (10) includes an ejector rod (15) and an ejector block (16). The ejector rod (15) is located in the through hole (12) and connected to the spring (13). The ejector block (16) is located in the die (7).

3. The tearing structure for processing stator cores according to claim 2, characterized in that, The bottom of the punch (4) is provided with an inclined cutting edge.

4. The tearing structure for processing stator cores according to claim 3, characterized in that, The upper mold (1) also includes an upper pad (17), which is disposed on the lower surface of the upper mold base (3). The upper surface of the unloading plate (5) is provided with a groove (18), and the upper pad (17) is disposed in the groove (18) of the unloading plate (5). The punch (4) is fixedly connected to the upper pad (17).

5. The tearing structure for processing stator cores according to claim 4, characterized in that, The upper mold (1) also includes a stripper plate (19), which is located below the stripper plate (5). The stripper plate (19) has a through hole three (21), and the punch (4) is located in the through hole three (21).

6. The tearing structure for processing stator cores according to claim 5, characterized in that, In the open mold state, the stripper plate (19) is 0.5-2mm higher than the punch (4).

7. A tearing structure for processing stator cores according to any one of claims 2-6, characterized in that, The top material block (16) is flush with the concave template (6).

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