Iron core assembly injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to an iron core assembly injection mold. The structural strength of the iron core assembly is guaranteed, meanwhile, the assembling cost before plastic coating forming of the iron core assembly is reduced, and the production efficiency is improved. Comprising a circumferential limiting assembly which comprises a first fixing piece and a second fixing piece, and the first fixing piece and the second fixing piece are matched to form a circumferential limiting cavity for containing an iron core assembly; the axial limiting piece is arranged above the circumferential limiting assembly and abuts against the upper surface of the first fixing piece and the upper surface of the second fixing piece. And the movable part is slidably arranged in the axial limiting part in a penetrating manner, the lower end of the movable part is in contact with the upper surface of the iron core assembly, and the movable part is configured to axially move along the axial limiting part under the action of external force so as to press and fix the iron core assembly in a circumferential limiting cavity formed by the circumferential limiting assembly. The device is simple in structure and high in adaptability.

Description

A core component injection mold Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold for iron core components. Background Technology

[0002] In the manufacturing process of electromagnetic devices such as motors and transformers, the iron core, as a key magnetic conductive component, directly affects the electromagnetic performance of the product due to its structural design and processing technology. For larger iron core assemblies, due to limitations in processing equipment or material properties, it is usually necessary to assemble multiple independent iron core units to form a complete iron core structure.

[0003] In existing technologies, welding is typically used to connect and fix multiple independent iron core units. While this method achieves mechanical connection between the iron cores, the high temperatures generated during welding can cause annealing of the iron core material, significantly reducing its magnetic permeability and thus affecting the electromagnetic performance of the product. Furthermore, the thermal stress generated during welding can easily cause iron core deformation, affecting assembly accuracy.

[0004] Secondly, the welding process requires highly skilled operators, making it difficult to maintain consistent welding quality. Furthermore, the mechanical strength of the welded joint often becomes a weak point in the entire structure. During subsequent plastic coating molding, the welded area is prone to displacement or deformation due to injection pressure, affecting the product's dimensional accuracy.

[0005] Furthermore, the welding process suffers from low production efficiency. Because welding requires individual operations, automated mass production is difficult to achieve, especially when the number of core units is large, making the welding process a key factor restricting production speed. Summary of the Invention

[0006] The purpose of this invention is to provide an injection mold for iron core components that ensures the structural strength of the iron core components while reducing the assembly cost before plastic coating and improving production efficiency.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This utility model provides an injection mold for an iron core assembly, comprising:

[0009] A circumferential limiting component, comprising a first fixing member and a second fixing member, wherein the first fixing member and the second fixing member cooperate to form a circumferential limiting cavity for accommodating the iron core assembly;

[0010] An axial limiting member is disposed above the circumferential limiting assembly, and the axial limiting member abuts against the upper surfaces of the first fixing member and the second fixing member;

[0011] A movable component is slidably inserted into the axial limiting component. The lower end of the movable component contacts the upper surface of the core assembly. The movable component is configured to move axially along the axial limiting component under the action of an external force to press and fix the core assembly within the circumferential limiting cavity formed by the circumferential limiting component.

[0012] Furthermore, a sliding plate is provided inside the second fixing member. One end of the sliding plate is connected to the inner wall of the second fixing member through a compression spring, and the other end of the sliding plate is elastically pressed against the side wall of the iron core assembly.

[0013] Furthermore, the ends of the first fixing member and the sliding piece that contact the iron core assembly are both formed with arc-shaped pressing surfaces.

[0014] Furthermore, guide grooves are formed by recessing the two sides of the slide piece inward along its sliding direction, and a limiting block is provided on the inner wall of the second fixing member. The limiting block is in clearance fit with the guide groove to provide limiting guidance for the slide piece.

[0015] Furthermore, the limiting block is fixed to the second fixing member by countersunk screws.

[0016] Furthermore, the movable part includes an integrally formed limiting part and a pressing part. The diameter of the limiting part is larger than the diameter of the pressing part. The limiting part contacts and engages with the upper end face of the axial limiting part to limit the maximum downward stroke of the movable part.

[0017] Furthermore, an elastic buffer layer is provided at the lower end of the clamping part.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] This utility model discloses an injection mold for an iron core assembly. By setting a circumferential limiting component, a first fixing member and a second fixing member are modularly combined to circumferentially position the iron core assembly. Then, by setting an axial limiting component and a movable component, which cooperate with the circumferential limiting component, axial clamping of the iron core assembly is achieved, ensuring stable positioning of the iron core assembly and stable injection molding operation. This utility model replaces the traditional thermal connection process with a mechanical structure design, perfectly avoiding the negative effects of welding while maintaining structural strength, reducing the assembly cost before the iron core assembly is coated, and improving production efficiency. Attached Figure Description

[0020] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0021] Figure 1 is a structural schematic diagram (a) of an injection mold for an iron core assembly provided by this utility model.

[0022] Figure 2 is a structural schematic diagram (II) of an injection mold for an iron core assembly provided by this utility model.

[0023] Figure 3 is a schematic diagram of the axial limiting component and movable component provided by this utility model in cooperation with the iron core assembly;

[0024] Figure 4 is a structural schematic diagram of the cooperation between the movable part and the iron core assembly provided by this utility model;

[0025] Figure 5 is a structural schematic diagram of the iron core assembly provided by this utility model;

[0026] Figure 6 is a structural schematic diagram of the movable component provided by this utility model;

[0027] The reference numerals in the attached figures are explained as follows:

[0028] 1. Circumferential limiting assembly; 10. First fixing component; 11. Second fixing component; 110. Sliding piece; 1100. Arc-shaped pressing surface; 112. Guide groove; 113. Limiting block; 114. Countersunk screw;

[0029] 2. Axial limiting component;

[0030] 3. Moving parts; 31. Limiting part; 32. Pressing part; 320. Elastic buffer layer;

[0031] 4. Iron core assembly. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] Referring to Figures 1 to 6, the injection mold for the iron core assembly of this utility model includes a circumferential limiting component 1, an axial limiting component 2, and a movable component 3. These components work together to ensure that the iron core assembly 4 maintains constant stability during the injection molding process.

[0034] Specifically, the circumferential limiting assembly 1 in this example includes a first fixing member 10 and a second fixing member 11, which cooperate to form a circumferential limiting cavity for accommodating the core assembly 4. In this example, a slidable slide plate 110 is provided inside the second fixing member 11. One end of the slide plate 110 is connected to the inner wall of the aforementioned second fixing member 11 via a compression spring 111, and the other end of the slide plate 110 is elastically pressed against the side wall of the core assembly 4. In addition, in order to improve the contact quality, the ends of the first fixing member 10 and the slide plate 110 that contact the core assembly 4 are both formed with arc-shaped pressing surfaces 1100. This curved contact design can effectively distribute the pressure and avoid local stress concentration on the core assembly 4.

[0035] To ensure the movement accuracy of the slider 110, in this example, guide grooves 112 are recessed inward on both sides of the slider 110 along its sliding direction. Correspondingly, a limiting block 113 is provided on the inner wall of the second fixing member 11. The limiting block 113 is fixed to the second fixing member 11 by countersunk screws 114. The clearance fit between the limiting block 113 and the guide groove 112 ensures the smooth sliding of the slider 110 and provides corresponding limiting guidance for the slider 110, preventing the slider 110 from swaying during the movement operation. This improves the positioning accuracy of the iron core assembly 4 and ensures the stability of the injection molding operation.

[0036] The axial limiting member 2 is disposed above the circumferential limiting component 1, and the lower end face of the axial limiting member 2 abuts against the upper surfaces of the first fixing member 10 and the second fixing member 11 to form a stable axial limiting.

[0037] The movable component 3 is slidably inserted into the aforementioned axial limiting component 2. The lower end of the movable component 3 contacts the upper surface of the core assembly 4. It is configured to move along the axial direction of the axial limiting component 2 under the action of external force, thereby pressing and fixing the core assembly 4 into the circumferential limiting cavity formed in the aforementioned circumferential limiting component 1. The movable component 3 adopts an integrally formed limiting part 31 and pressing part 32 structure, and the diameter of the limiting part 31 is larger than the diameter of the pressing part 32. The larger diameter design of the limiting part 31 allows it to form a stop fit with the upper end face of the axial limiting component 2, thereby controlling the downward pressing stroke of the movable component 3. An elastic buffer layer 320 is provided at the lower end of the pressing part 32. This buffer design can ensure the uniform transmission of the pressing force and effectively avoid damage to the surface of the core assembly 4 during the pressing process.

[0038] In actual operation, the operator places the combination of axial limiting component 2 and movable component 3 onto the upper end of the assembled iron core assembly 4. Then, the iron core assembly 4 with the limiting assembly already in place is placed into the circumferential limiting cavity of the circumferential limiting component 1.

[0039] Subsequently, the slide 110 in the second fixing member 11 is pushed. Under the action of the compression spring 111, the slide 110 makes the iron core assembly 4 stably limited in the limiting cavity formed by the cooperation of the first fixing member 10 and the second fixing member 11, that is, the inner contour of the limiting cavity matches the outer contour of the iron core assembly 4.

[0040] After the circumferential constraint is completed, the operator can drive the movable part 3 to move along the axial direction by external force. Since the movable part 3 is slidably set in the axial limiter 2, the movement trajectory of the movable part 3 is guided by the axial limiter 2, thereby ensuring the verticality of the movable part 3 when it is pressed down.

[0041] When the elastic buffer layer 320 of the pressing part 32 of the moving part 3 contacts the upper surface of the core assembly 4, the operator can clearly feel the change in resistance. At this time, it is only necessary to continue to apply steady pressure until the limiting part 31 contacts the upper end face of the axial limiting part 2, which indicates that the preset pressing stroke has been reached. The entire pressing process adopts a gradual force application, so that the core assembly 4 falls smoothly into the final position of the circumferential limiting cavity, avoiding potential damage to the precision component by impact load.

[0042] In summary, the injection mold for the iron core assembly disclosed in this utility model achieves efficient and precise positioning and fixing of the iron core assembly 4 through the operation process of "first circumferential positioning, then axial clamping". The circumferential positioning cavity is formed by the precise cooperation of the first fixing member 10 and the second fixing member 11, and the sliding plate 110 structure with compression spring 111 achieves adaptive elastic positioning of the iron core assembly 4; the combined design of the axial limiting member 2 and the movable member 3 ensures precise control of axial clamping.

[0043] The mold is easy to operate and has tactile feedback, which greatly reduces the technical requirements for operators and significantly improves production efficiency and product consistency. It is particularly suitable for injection molding of iron core components that require large-volume, high-precision production.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. An injection mold for an iron core assembly, characterized in that, include: A circumferential limiting component (1) includes a first fixing member (10) and a second fixing member (11), the first fixing member (10) and the second fixing member (11) cooperate to form a circumferential limiting cavity for accommodating the iron core assembly; an axial limiting member (2) is disposed above the circumferential limiting component (1), the axial limiting member (2) abuts against the upper surfaces of the first fixing member (10) and the second fixing member (11); a movable member (3) is slidably inserted in the axial limiting member (2), the lower end of the movable member (3) contacts the upper surface of the iron core assembly, the movable member (3) is configured to move axially along the axial limiting member (2) under the action of external force, so as to press and fix the iron core assembly in the circumferential limiting cavity formed by the circumferential limiting component (1).

2. The injection mold for a core assembly according to claim 1, characterized in that, The second fixing member (11) is provided with a sliding piece (110). One end of the sliding piece (110) is connected to the inner wall of the second fixing member (11) through a compression spring (111), and the other end of the sliding piece (110) is elastically pressed against the side wall of the iron core assembly.

3. The injection mold for a core assembly according to claim 2, characterized in that, The ends of the first fixing member (10) and the sliding piece (110) that contact the iron core assembly are both formed with arc-shaped pressing surfaces (1100).

4. The injection mold for a core assembly according to claim 2, characterized in that, The two sides of the slide (110) are recessed inward along its sliding direction to form guide grooves (112). A limit block (113) is provided on the inner wall of the second fixing member (11). The limit block (113) is in clearance fit with the guide groove (112) to provide a limit guide for the slide (110).

5. The injection mold for a core assembly according to claim 4, characterized in that, The limiting block (113) is fixed to the second fixing member (11) by countersunk screws (114).

6. The injection mold for a core assembly according to claim 1, characterized in that, The movable part (3) includes an integrally formed limiting part (31) and a pressing part (32). The diameter of the limiting part (31) is larger than the diameter of the pressing part (32). The limiting part (31) contacts and cooperates with the upper end face of the axial limiting part (2) to limit the maximum downward stroke of the movable part (3).

7. The injection mold for a core assembly according to claim 6, characterized in that, An elastic buffer layer (320) is provided at the lower end of the pressing part (32).

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