Double-sheet thin riveting-point-free iron core structure and production tool for iron core structure

Abstract

The utility model relates to the technical field of iron cores, in particular to a double-sheet thin riveting-point-free iron core structure and a production tool for the same, the double-sheet thin riveting-point-free iron core structure comprises two outer frames and two silicon steel sheets, the two outer frames are connected to the two sides of the silicon steel sheets, and the two silicon steel sheets are located between the two outer frames; first clamping surfaces are arranged on the two sides of each silicon steel sheet, second clamping surfaces are further arranged at the opposite ends of the two silicon steel sheets, first connecting surfaces matched with the first clamping surfaces are arranged on the outer frame, second connecting surfaces matched with the second clamping surfaces are arranged on the outer frame, and the first connecting surfaces and the second connecting surfaces are obliquely arranged. The first connecting surface and the second connecting surface are obliquely arranged, so that the connecting positions of the outer frames and the silicon steel sheets are not only in one direction, the connecting strength of the outer frames and the silicon steel sheets is improved, it is guaranteed that the thin silicon steel sheets are not separated from the outer frames during semi-shearing stamping, two silicon steel sheets are arranged between every two outer frames, and the service life of the silicon steel sheets can be prolonged under the condition that the connecting strength is guaranteed. The production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of iron core technology, and in particular to a double-plate thin rivetless iron core structure and the production tooling for the iron core structure. Background Technology

[0002] The iron core is generally made up of several silicon steel sheets stacked together. The production process is as follows: first, the individual silicon steel sheets and outer frame are punched out on the steel strip, then the silicon steel sheets and outer frame are half-sheared and stamped, then multiple sheets are stacked together, then multiple silicon steel sheets are connected together, and then the silicon steel sheets are separated from the outer frame.

[0003] If the silicon steel sheet is too thin, it may separate directly from the outer frame during the half-shearing and stamping process, which is not conducive to subsequent processes and requires improvement in production efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is: In order to solve the technical problems in the prior art, this utility model provides a double-layer thin rivetless iron core structure and production tooling for the iron core structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a double-sheet thin rivetless iron core structure, including an outer frame and silicon steel sheets. There are two outer frames connected to both sides of the silicon steel sheets. There are also two silicon steel sheets located between the two outer frames. Each side of the silicon steel sheet is provided with a first snap-fit ​​surface, and the opposite ends of the two silicon steel sheets are also provided with a second snap-fit ​​surface. The outer frame is provided with a first connecting surface that cooperates with the first snap-fit ​​surface, and the outer frame is provided with a second connecting surface that cooperates with the second snap-fit ​​surface. The first connecting surface and the second connecting surface are inclined.

[0006] This utility model's double-sheet thin rivetless iron core structure addresses the issue that the silicon steel sheet and outer frame require semi-shearing stamping. If the connection between the outer frame and the silicon steel sheet is only on one side, the bonding strength is limited, and the thinner silicon steel sheet may separate directly from the outer frame during semi-shearing stamping. However, by setting the first and second connecting surfaces at an angle, the connection between the outer frame and the silicon steel sheet is not limited to one direction, thereby improving the connection strength between the outer frame and the silicon steel sheet. This ensures that the thinner silicon steel sheet does not separate from the outer frame during semi-shearing stamping. Furthermore, by placing two silicon steel sheets between every two outer frames, production efficiency can be improved while maintaining connection strength, with minimal impact on subsequent processes.

[0007] Furthermore, the silicon steel sheet includes a connecting part and a separating part that are connected to each other, and the first snap-fit ​​surface and the second snap-fit ​​surface are both provided on the connecting part.

[0008] Furthermore, the first connecting surface is provided with a connecting groove, and the first snap-fit ​​surface is provided with a connecting protrusion that mates with the connecting groove.

[0009] Furthermore, the outer frame is provided with four fixing points.

[0010] Furthermore, the distance between the second connecting surface and the separating part gradually decreases from the middle to both sides.

[0011] Furthermore, a separation groove is provided between the two outer frames, and there are two separation grooves, which are arranged opposite to each other along the length direction of the outer frames.

[0012] Furthermore, the separation groove includes a first groove and a second groove that are interconnected, the width of the first groove is greater than that of the second groove, and the second groove is in contact with the second snap-fit ​​surface.

[0013] A production fixture for the above-mentioned double-sheet thin rivetless iron core structure includes a template, a positioning component, and a separating component. The positioning component is disposed on the template and is adapted to position the silicon steel sheet and the outer frame. The separating component is adapted to be inserted into a separating groove to separate the outer frame from the silicon steel sheet.

[0014] Furthermore, a first positioning groove is provided between the two outer frames and the silicon steel sheet. The positioning element includes a first positioning block, which is inserted into the first positioning groove. The first positioning block is provided with a limiting groove for the two separation parts to be inserted.

[0015] The separating element includes two first separating blocks, which are adapted to be inserted into two separating slots respectively, so as to separate the two outer frames from the connecting parts.

[0016] Furthermore, a first positioning groove is provided between the two outer frames and the silicon steel sheet, and the separation groove is located at the end of the connecting part away from the separation part; the positioning member includes a first positioning block, which is inserted into the first positioning groove, and the first positioning block is provided with a limiting groove for the separation part to be inserted; the separation member includes a first separation block, which is adapted to be inserted into the separation groove so that the two outer frames are separated from the connecting part.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting the first and second connecting surfaces at an angle, the connection between the outer frame and the silicon steel sheet is not in only one direction, thereby improving the connection strength between the outer frame and the silicon steel sheet. This ensures that the thinner silicon steel sheet does not separate from the outer frame during half-shearing and stamping. At the same time, setting two silicon steel sheets between every two outer frames can improve production efficiency while ensuring connection strength, and has little impact on subsequent processes.

[0019] 2. By inserting the separator into the separation groove to separate the two outer frames from the silicon steel sheet, the possibility of deformation or damage to the silicon steel sheet can be reduced, achieving non-destructive separation. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram illustrating the double-layer thin, rivetless iron core structure in Embodiment 1 of this utility model.

[0022] Figure 2 This is a schematic diagram illustrating the overall structure of the production tooling in Embodiment 1 of this utility model.

[0023] Figure 3 This is a schematic diagram illustrating the working state of the first separating block and the first positioning block in Embodiment 1 of this utility model.

[0024] Figure 4 This is a schematic diagram illustrating the structure of the first positioning block in Embodiment 1 of this utility model.

[0025] Figure 5 This is a schematic diagram illustrating the structure of the first separating block in Embodiment 1 of this utility model.

[0026] In the diagram: 1. Outer frame; 11. Separation groove; 111. First groove; 112. Second groove; 12. First connecting surface; 121. Connecting groove; 13. Second connecting surface; 16. Fastening point; 2. Silicon steel sheet; 21. Connecting part; 22. Separating part; 23. First snap-fit ​​surface; 231. Connecting protrusion; 24. Second snap-fit ​​surface; 31. Template; 311. Base plate; 312. Separating positioning plate; 313. Guide post; 32. Positioning component; 321. First positioning block; 3211. Limiting groove; 323. Second positioning block; 33. Separating component; 331. First separating block; 3311. Fixing part; 3312. Working part; 332. Second separating block. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] This utility model discloses a double-layer thin rivetless iron core structure and the production tooling used for the iron core structure.

[0030] Reference Figure 1 A double-sheet thin rivetless iron core structure includes two outer frames 1 and two silicon steel sheets 2 disposed between the two outer frames 1. Two separation grooves 11 are provided between the two outer frames 1. The silicon steel sheet 2 includes an integrally formed connecting part 21 and a separating part 22. The connecting part 21 is connected to both outer frames 1.

[0031] Specifically, both sides of the connecting part 2 are provided with a first snap-fit ​​surface 23 and a second snap-fit ​​surface 24. Each outer frame 1 is provided with a first connecting surface 12 that mates with the first snap-fit ​​surface 23 and a second connecting surface 13 that mates with the second snap-fit ​​surface 24. The first connecting surface 12 and the second connecting surface 13 are inclined, that is, the connection between the outer frame 1 and the silicon steel sheet 2 is not only in one direction, thereby improving the connection strength between the outer frame 1 and the silicon steel sheet 2, so as to accommodate thinner silicon steel sheets 2. Because the silicon steel sheet 2 and the outer frame 1 need to be semi-sheared and stamped, if the connection between the outer frame 1 and the silicon steel sheet 2 is only on one side, the connection strength is limited. During the semi-shearing and stamping, the thinner silicon steel sheet 2 may separate directly from the outer frame 1.

[0032] More specifically, the first connecting surface 12 is provided with a connecting groove 121, and the first snap-fit ​​surface 23 is provided with a connecting protrusion 231 that mates with the connecting groove 121.

[0033] The distance between the second connecting surface 13 and the separating part 22 gradually decreases from the middle to both sides, so that the outer frame 1 and the connecting part 21 can be separated along the width direction of the outer width. The separating groove 11 includes a first groove 111 and a second groove 112 that are interconnected. The width of the first groove 111 is greater than that of the second groove 112, and the second groove 112 contacts the second snap-fit ​​surface 24. During processing, the outer frame 1 is originally a whole, but it is divided into two parts by the two separating grooves 11. However, since it is stamped, the second connecting surface 13 is easily damaged. Therefore, the width of the second groove 112 is smaller than the width of the first groove 111, which also increases the contact area between the second snap-fit ​​surface 24 and the second connecting surface 13.

[0034] A production tooling, as shown in the reference Figures 2 to 5 The system includes a template 31, a positioning element 32, and a separating element 33. The positioning element 32 is mounted on the template 31 and is adapted to position the silicon steel sheet 2 and the outer frame 1. The separating element 33 is adapted to be inserted into the separating groove 11 to separate the outer frame 1 from the silicon steel sheet 2. The template 31 includes a base plate 311 and a separating positioning plate 312. The positioning element 32 is mounted on the base plate 311, and the separating element 33 is mounted on the separating positioning plate 312. A guide post 313 is connected to the base plate 311. When the base plate 311 and the separating positioning plate 312 are closed, the separating positioning plate 312 is passed through by the guide post 313.

[0035] A first positioning groove is provided between the two outer frames 1 and the silicon steel sheet 2. The first positioning groove includes a middle part and four edge parts connected to the middle part. Two separation grooves 11 are provided and are arranged opposite to each other along the length direction of the outer frames 1. The positioning member 32 includes a first positioning block 321, which is inserted into the first positioning groove. The first positioning block 321 is provided with a limiting groove 3211 for the separation part 22 to be inserted, and the separation part 22 is adapted to the limiting groove 3211. The separation member 33 includes a first separation block 331, which is used to insert into the separation groove 11 to separate the two outer frames 1 from the connecting part 21.

[0036] The first separating block 331 includes an integrally formed fixing part 3311 and a working part 3312. The working part 3312 is adapted to be inserted into the separating groove 11, while the fixing part 3311 is fixedly connected to the separating positioning plate 312. The fixing part 3311 has two avoidance slopes at one end facing the working part 3312. The distance between the avoidance slopes and the end of the working part 3312 away from the fixing part 3311 gradually increases from the middle to the edge of the fixing part 3311 to avoid interference when separating the two outer frames 1. The width of the working part 3312 is slightly larger than the width of the separating groove 11 so that the outer frame 1 can be separated from the silicon steel sheet 2 when inserted into the separating groove 11. The bottom of the working part 3312 has an integrally formed first guide cone. The width of the small end of the first guide cone is smaller than the width of the separating groove 11 so that it can be inserted into the separating groove 11.

[0037] When separating the outer frame 1 from the silicon steel sheet 2 using production tooling, the integrated silicon steel sheet 2 and outer frame 1 are first placed on the base plate 311, and the separation part 22 is inserted into the limiting groove 3211. Then, the separation positioning plate 312 is closed with the base plate 311, so that the working part 3312 is inserted into the separation groove 11, so that the two outer frames 1 move in opposite directions and separate from the silicon steel sheet 2.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A double-layer thin, rivetless iron core structure, characterized in that, It includes an outer frame and silicon steel sheets. There are two outer frames (1) connected to both sides of the silicon steel sheets (2). There are also two silicon steel sheets (2) located between the two outer frames (1). The silicon steel sheet (2) has a first snap-fit ​​surface (23) on both sides, and a second snap-fit ​​surface (24) is provided on the opposite end of the two silicon steel sheets (2). The outer frame (1) has a first connecting surface (12) that cooperates with the first snap-fit ​​surface (23), and the outer frame (1) has a second connecting surface (13) that cooperates with the second snap-fit ​​surface (24). The first connecting surface (12) and the second connecting surface (13) are inclined.

2. The double-layer thin rivetless iron core structure according to claim 1, characterized in that, The silicon steel sheet (2) includes a connecting part (21) and a separating part (22) that are connected to each other, and the first snap-fit ​​surface (23) and the second snap-fit ​​surface (24) are both provided on the connecting part (21).

3. The double-layer thin rivetless iron core structure according to claim 1, characterized in that, The first connecting surface (12) is provided with a connecting groove (121), and the first snap-fit ​​surface (23) is provided with a connecting protrusion (231) that cooperates with the connecting groove (121).

4. The double-layer thin rivetless iron core structure according to claim 1, characterized in that, The outer frame (1) is provided with four fixing points (16).

5. The double-layer thin rivetless iron core structure as described in claim 1, characterized in that, The distance between the second connecting surface (13) and the separating part (22) gradually decreases from the middle to both sides.

6. The double-layer thin rivetless iron core structure as described in claim 1, characterized in that, A separation groove (11) is provided between the two outer frames (1), and there are two separation grooves (11) which are arranged opposite to each other along the length direction of the outer frame (1).

7. The double-layer thin rivetless iron core structure as described in claim 6, characterized in that, The separation groove (11) includes a first groove (111) and a second groove (112) that are interconnected. The width of the first groove (111) is greater than that of the second groove (112). The second groove (112) is in contact with the second snap-fit ​​surface (24).

8. A production tooling for the double-layer thin rivetless iron core structure as described in claim 7, characterized in that, It includes a template (31), a positioning element (32) and a separating element (33). The positioning element (32) is disposed on the template (31) and is adapted to position the silicon steel sheet (2) and the outer frame (1). The separating element (33) is adapted to be inserted into the separating groove (11) so that the outer frame (1) is separated from the silicon steel sheet (2).

9. The production tooling as described in claim 8, characterized in that, The template (31) includes a base plate (311) and a separation positioning plate (312). The positioning component (32) is installed on the base plate (311), and the separation component (33) is installed on the separation positioning plate (312). The base plate (311) is connected to a guide post (313). When the base plate (311) and the separation positioning plate (312) are closed, the separation positioning plate (312) is passed through by the guide post (313).

10. The production tooling as described in claim 9, characterized in that, A first positioning groove is provided between the two outer frames (1) and the silicon steel sheet (2). The positioning component (32) includes a first positioning block (321). The first positioning block (321) is inserted into the first positioning groove. The first positioning block (321) is provided with a limiting groove (3211) for the two separation parts (22) to be inserted. The separating component (33) includes two first separating blocks (331), which are adapted to be inserted into two separating slots (11) respectively, so as to separate the two outer frames (1) from the connecting part (21).

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