Curing and press-fitting die for long stator iron core

By designing limit posts, positioning shafts, and spring assemblies, the problem of uneven surface caused by heating in the long stator core solidification press mold was solved, achieving high-precision press-fitting and high-strength connection of the core.

CN223540408UActive Publication Date: 2025-11-11NINGBO HONGDA MOTOR DIE
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Patent Information

Application Number
CN202423013346.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-11-11
Estimated Expiration
2034-12-06

AI Technical Summary

Technical Problem

In the existing long stator core curing and pressing mold, the glue between the thin sheets melts during the heating and pressing process, resulting in an uneven core surface and affecting the pressing effect.

Method used

The structure employs limiting posts, positioning shafts, spring assemblies, and guide posts to ensure that the sheet does not shift during heating and curing. The spring force maintains close contact, ensuring the flatness and strength of the core surface.

Benefits of technology

This results in a smoother core surface, a higher stacking coefficient, and higher pressing accuracy, preventing sheet displacement and ensuring that the core remains firmly connected even after the adhesive melts during heating and curing.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223540408U_ABST
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Abstract

The utility model provides a long stator iron core curing press-fitting die, which belongs to the field of dies, and comprises a bottom plate, a press-fitting mechanism, a limiting column, a positioning mechanism and a spring assembly, in the scheme, a spring screw is used for connecting a spring and a nut, the nut is used for limiting the spring, and the press-fitting mechanism is used for fixing the press-fitting mechanism. By arranging the spring, the cover plate can be pressed more tightly, glue on the surfaces of the sheets can be melted when the iron core is heated and cured, thin gaps can be formed on the surfaces of the sheets, the distance can be shortened through the elastic force of the spring, and the iron core can be attached more firmly, higher in strength, higher in lamination coefficient and smoother when the iron core is heated and cured; the technical problems that in the prior art, when a long stator iron core body curing press-fitting die is used for press-fitting, due to the fact that heating is needed in the press-fitting process, the curing press-fitting effect is improved, glue between sheets can be melted after heating, and consequently the surface of an iron core is uneven can be solved.
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Description

Technical Field

[0001] This utility model belongs to the field of molds, specifically relating to a long stator core solidification and pressing mold. Background Technology

[0002] The stator core is an important component of the motor's magnetic circuit. Together with the rotor core and the air gap between the stator and rotor, it forms the complete magnetic circuit of the motor. In asynchronous motors, the magnetic flux in the stator core is alternating, thus generating core losses.

[0003] In the existing technology of long stator core curing and pressing molds, heating is required during the pressing process to improve the curing and pressing effect. However, the adhesive between the thin sheets will melt after heating, resulting in unevenness on the core surface. Utility Model Content

[0004] The purpose of this utility model is to provide a long stator core curing and pressing mold, which aims to solve the problem that in the existing long stator core curing and pressing mold, heating is required during the pressing process to improve the curing and pressing effect, but the glue between the thin sheets will melt after heating, resulting in an uneven surface on the core.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A long stator core solidification pressing mold includes:

[0007] Base plate;

[0008] A pressing mechanism is located on the top of the base plate, and the pressing mechanism is used to press the long stator core body;

[0009] Multiple limiting posts are provided, and all of the multiple limiting posts are provided on the pressing mechanism;

[0010] A positioning mechanism is provided on the pressing mechanism, and the positioning mechanism is used for positioning the long stator core body during solidification.

[0011] A spring assembly is provided on the press-fitting mechanism, and the spring assembly is used to press the long stator core body.

[0012] As a preferred embodiment of this utility model, the pressing mechanism includes a lower positioning plate, guide pillars, an upper positioning plate, and a cover plate. The lower positioning plate is detachably connected to the top of the base plate. Four guide pillars are provided, and each of the four guide pillars is detachably connected to the top of the lower positioning plate by screws. The four guide pillars are evenly distributed. The upper positioning plate is movably sleeved on the four guide pillars. The cover plate is detachably connected to the top of the upper positioning plate and is movably sleeved on the four guide pillars.

[0013] As a preferred embodiment of this utility model, the positioning mechanism includes positioning shaft A and positioning shaft B. There are six positioning shafts A, each of which is movably inserted into the cover plate, the upper positioning plate and the lower positioning plate in sequence, and the six positioning shafts A are evenly distributed. There are three positioning shafts B, each of which is movably inserted into the cover plate, the upper positioning plate and the lower positioning plate in sequence.

[0014] In a preferred embodiment of this utility model, the spring assembly includes a spring screw, a spring, and a nut. Multiple spring screws are provided, each movably inserted into the cover plate and the upper positioning plate, with one end of each spring screw movably passing through the cover plate and the upper positioning plate and detachably connected to the lower positioning plate via screws. Multiple nuts are provided, each threadedly connected to each spring screw. Multiple springs are provided, each movably sleeved on each spring screw, and each spring is located between each nut and the cover plate.

[0015] In a preferred embodiment of this utility model, each of the limiting posts is detachably connected to the top of the lower positioning plate by screws, and each limiting post is located between the lower positioning plate and the upper positioning plate.

[0016] As a preferred embodiment of this utility model, the top of the cover plate is threaded with two lifting rings, which are arranged symmetrically.

[0017] In a preferred embodiment of this utility model, the lower positioning plate is detachably connected to the top of the base plate by screws, and the cover plate is detachably connected to the top of the upper positioning plate by screws.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. In this solution, the spring screw is used to connect the spring and the nut, the nut is used to limit the spring, and the spring can press the cover plate tighter. When the iron core is heated and cured, the glue on the surface of the sheet will melt away, creating a thin gap on the surface of the sheet. The spring force can reduce the distance, allowing the iron core to adhere more firmly during heating and curing, resulting in higher strength, higher overlapping coefficient, and a flatter iron core.

[0020] 2. In this solution, by setting positioning shaft A and positioning shaft B, thin sheets of 0.2cm-0.3cm can be connected into a whole. When subjected to pressing force, the thin sheets are connected into a whole iron core, preventing the thin sheets from shifting during pressing, thereby ensuring the accuracy of the long stator iron core body after pressing.

[0021] 3. In this solution, the lower positioning plate is used to support the long stator core body, and the guide post allows the upper positioning plate and cover plate to slide stably, thereby ensuring the accuracy of the long stator core body curing and pressing. The upper positioning plate is used to press the core, making the surface of the long stator core flatter and the stacking coefficient higher. The cover plate is used to transmit the pressure released by the press, thereby pressing the long stator core.

[0022] 4. In this solution, the height of the iron core can be limited by the setting of the limiting post, and the tilting of the upper mold part can be avoided, which effectively protects the iron core, controls the thickness difference of the iron core, and can pass through the limiting post, perfectly solving the problems of uneven pressure and uneven iron core surface. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is an exploded view of the positioning axis A of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the lower positioning plate of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the long stator core body of this utility model.

[0028] In the diagram: 1. Base plate; 2. Lower positioning plate; 3. Guide post; 4. Limiting post; 5. Spring screw; 6. Positioning shaft A; 7. Upper positioning plate; 8. Cover plate; 9. Spring; 10. Nut; 11. Positioning shaft B; 12. Lifting ring; 13. Long stator core body; 1301. Trapezoidal groove A; 1302. Trapezoidal groove B. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0030] Please see Figures 1-4 The technical solution provided in this embodiment is as follows:

[0031] A long stator core solidification pressing mold is composed of a base plate 1, a pressing mechanism, a limiting post 4, a positioning mechanism and a spring assembly. Multiple limiting posts 4 are provided, and multiple limiting posts 4 are all located on the pressing mechanism.

[0032] In a specific embodiment of this utility model, a pressing mechanism is used to press the long stator core body 13. One side of the long stator core body 13 has several trapezoidal grooves A1301, the shape of which matches the positioning shaft A6. Another side of the long stator core body 13 has several trapezoidal grooves B1302, the shape of which matches the positioning shaft B11. A base plate 1 is used to support the entire mold. The thickness of the base plate 1 is 30.0 mm. The setting of the limiting post 4 can limit the height of the core and prevent the upper mold from tilting, effectively protecting the core and controlling the thickness difference of the core. The limiting post perfectly solves the problems of uneven pressure and uneven core surface.

[0033] Specifically, the pressing mechanism is located on the top of the base plate 1. The pressing mechanism is used to press the long stator core body 13. The pressing mechanism includes a lower positioning plate 2, guide posts 3, an upper positioning plate 7, and a cover plate 8. The lower positioning plate 2 is detachably connected to the top of the base plate 1. There are four guide posts 3. All four guide posts 3 are detachably connected to the top of the lower positioning plate 2 by screws, and the four guide posts 3 are evenly distributed. The upper positioning plate 7 is movably sleeved on the four guide posts 3. The cover plate 8 is detachably connected to the top of the upper positioning plate 7, and the cover plate 8 is movably sleeved on the four guide posts 3.

[0034] In a specific embodiment of this utility model, the lower positioning plate 2 is used to support the long stator core body 13, and the guide post 3 allows the upper positioning plate 7 and the cover plate 8 to slide stably, thereby ensuring the accuracy of the long stator core body 13 during pressing. The upper positioning plate 7 is used to press the core, thereby making the surface of the long stator core flatter and the stacking coefficient higher. The cover plate 8 is used to transmit the pressure released by the press, thereby pressing the long stator core.

[0035] Specifically, the positioning mechanism is located on the pressing mechanism. The positioning mechanism is used for positioning the long stator core body 13 during solidification. The positioning mechanism includes positioning shaft A6 and positioning shaft B11. There are six positioning shafts A6, each of which is sequentially and movably inserted into the cover plate 8, the upper positioning plate 7 and the lower positioning plate 2. The six positioning shafts A6 are evenly distributed. There are three positioning shafts B11, each of which is sequentially and movably inserted into the cover plate 8, the upper positioning plate 7 and the lower positioning plate 2.

[0036] In a specific embodiment of this utility model, the positioning shafts A6 and B11 can connect thin sheets of 0.2cm-0.3cm into a whole. When subjected to pressing force, the thin sheets are connected into a whole iron core, preventing the thin sheets from shifting during pressing, thereby ensuring the accuracy of the long stator iron core body 13 after pressing.

[0037] Specifically, the spring assembly is mounted on the press-fitting mechanism. The spring assembly is used to press the long stator core body 13. The spring assembly includes a spring screw 5, a spring 9, and a nut 10. There are multiple spring screws 5, each of which is movably inserted into the cover plate 8 and the upper positioning plate 7. One end of each spring screw 5 movably passes through the cover plate 8 and the upper positioning plate 7 and is detachably connected to the lower positioning plate 2 by screws. There are multiple nuts 10, each of which is threaded onto each spring screw 5. There are multiple springs 9, each of which is movably sleeved on each spring screw 5. Each spring 9 is located between each nut 10 and the cover plate 8.

[0038] In a specific embodiment of this utility model, the spring screw 5 is used to connect the spring 9 and the nut 10, and the nut 10 is used to restrict the spring 9. The spring 9 can press the cover plate 8 tighter, so that when the iron core is heated and cured, the glue on the surface of the sheet will melt away, creating a thin gap on the surface of the sheet. The elastic force of the spring 9 can reduce the distance, allowing the iron core to adhere more firmly during heating and curing, resulting in higher strength, higher stacking coefficient, and a flatter iron core.

[0039] Specifically, each limiting post 4 is detachably connected to the top of the lower positioning plate 2 by screws, and each limiting post 4 is located between the lower positioning plate 2 and the upper positioning plate 7.

[0040] In a specific embodiment of this utility model, each limiting post 4 is detachably connected to the top of the lower positioning plate 2 by screws, and each limiting post 4 is located between the lower positioning plate 2 and the upper positioning plate 7.

[0041] Specifically, the top threaded connection of the cover plate 8 has two lifting rings 12, which are symmetrically arranged.

[0042] In a specific embodiment of this utility model, the two lifting rings 12 facilitate the lifting of the entire mold.

[0043] Specifically, the lower positioning plate 2 is detachably connected to the top of the base plate 1 by screws, and the cover plate 8 is detachably connected to the top of the upper positioning plate 7 by screws.

[0044] In a specific embodiment of this utility model, the lower positioning plate 2 is detachably connected to the top of the base plate 1 by screws, and the cover plate 8 is detachably connected to the top of the upper positioning plate 7 by screws.

[0045] The working principle or process of the long stator core solidification and pressing mold provided by this utility model is as follows: the height of the core can be limited by the setting of the limiting column 4, and the upper mold part can be prevented from tilting, effectively protecting the core and controlling the thickness difference of the core.

[0046] The lower positioning plate 2 is used to support the long stator core body 13. The guide post 3 allows the upper positioning plate 7 and the cover plate 8 to slide stably, thereby ensuring the accuracy of the long stator core body 13 during pressing. The upper positioning plate 7 is used to press the core, making the surface of the long stator core flatter and the stacking coefficient higher. The cover plate 8 is used to transmit the pressure released by the press, thereby pressing the long stator core.

[0047] By setting up positioning shafts A6 and B11, thin sheets of 0.2cm-0.3cm can be connected into a whole. When subjected to pressing force, the thin sheets are connected into a whole iron core, preventing the thin sheets from shifting during pressing, thereby ensuring the accuracy of the long stator iron core body 13 after pressing.

[0048] The spring screw 5 is used to connect the spring 9 and the nut 10. The nut 10 is used to restrict the spring 9. The spring 9 can press the cover plate 8 tighter, so that when the iron core is heated and cured, the glue on the surface of the sheet will melt away, creating a thin gap on the surface of the sheet. The elastic force of the spring 9 can reduce the distance, allowing the iron core to adhere more firmly during heating and curing, resulting in higher strength, higher overlapping coefficient, and a flatter iron core.

[0049] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A long stator core solidification and pressing mold, characterized in that, include: Base plate (1); A pressing mechanism is located on the top of the base plate (1), and the pressing mechanism is used to press the long stator core body (13). The limiting post (4) is provided in multiple ways, and all of the limiting posts (4) are provided on the pressing mechanism; A positioning mechanism is provided on the pressing mechanism, and the positioning mechanism is used for positioning the long stator core body (13) during solidification. A spring assembly, located on the press-fitting mechanism, is used to press the long stator core body (13).

2. The long stator core solidification pressing mold according to claim 1, characterized in that: The pressing mechanism includes a lower positioning plate (2), guide pillars (3), an upper positioning plate (7), and a cover plate (8). The lower positioning plate (2) is detachably connected to the top of the base plate (1). There are four guide pillars (3), and all four guide pillars (3) are detachably connected to the top of the lower positioning plate (2) by screws. The four guide pillars (3) are evenly distributed. The upper positioning plate (7) is movably sleeved on the four guide pillars (3). The cover plate (8) is detachably connected to the top of the upper positioning plate (7) and is movably sleeved on the four guide pillars (3).

3. The long stator core solidification pressing mold according to claim 2, characterized in that: The positioning mechanism includes positioning shaft A (6) and positioning shaft B (11). There are six positioning shafts A (6), each of which is sequentially and movably inserted into the cover plate (8), the upper positioning plate (7) and the lower positioning plate (2), and the six positioning shafts A (6) are evenly distributed. There are three positioning shafts B (11), each of which is sequentially and movably inserted into the cover plate (8), the upper positioning plate (7) and the lower positioning plate (2).

4. The long stator core solidification pressing mold according to claim 3, characterized in that: The spring assembly includes a spring screw (5), a spring (9), and a nut (10). There are multiple spring screws (5), each of which is movably inserted into the cover plate (8) and the upper positioning plate (7). One end of each spring screw (5) movably passes through the cover plate (8) and the upper positioning plate (7) and is detachably connected to the lower positioning plate (2) by a screw. There are multiple nuts (10), each of which is threaded onto each spring screw (5). There are multiple springs (9), each of which is movably sleeved on each spring screw (5). Each spring (9) is located between each nut (10) and the cover plate (8).

5. The long stator core solidification pressing mold according to claim 4, characterized in that: Each of the aforementioned limiting posts (4) is detachably connected to the top of the lower positioning plate (2) by screws, and each limiting post (4) is located between the lower positioning plate (2) and the upper positioning plate (7).

6. The long stator core solidification pressing mold according to claim 5, characterized in that: The top of the cover plate (8) is threaded with two lifting rings (12), which are arranged symmetrically.

7. The long stator core solidification pressing mold according to claim 6, characterized in that: The lower positioning plate (2) is detachably connected to the top of the base plate (1) by screws, and the cover plate (8) is detachably connected to the top of the upper positioning plate (7) by screws.