Glue dipping, curing and shaping tool suitable for magnetic material lamination

Abstract

The utility model discloses a glue dipping curing shaping tool suitable for magnetic material laminations, which comprises a bottom plate assembly and a magnetic core shaping assembly, the bottom plate assembly comprises a bottom plate, a positioning column and a limiting column, the positioning column and the limiting column are arranged on two sides of the bottom plate, and a turning buckle is assembled in the center of the limiting column; the magnetic core shaping assembly is placed between the positioning column and the limiting column, the magnetic core shaping assembly comprises a plurality of baffles, magnetic core inner molds and limiting plates, the baffles are vertically placed on the bottom plate at equal intervals, the magnetic core inner molds are movably placed on the bottom plate and located in the centers of the adjacent baffles, and magnetic cores to be shaped are arranged on the magnetic core inner molds in a sleeving mode; an extrusion shaping area of a magnetic core to be shaped is formed between the magnetic core inner mold and the baffles on the two corresponding sides, and the limiting plates are movably arranged between the magnetic core inner mold and the corresponding baffles and located on the upper surface and the lower surface of the magnetic core to be shaped. According to the shaping tool, the size, thickness and parallelism of laminations on the two sides of the magnetic core can be precisely controlled, and the magnetic core preparation requirement with the high lamination size precision requirement is met.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic core material component manufacturing, and in particular relates to a tooling suitable for adhesive impregnation, curing and shaping of stacked magnetic materials. Background Technology

[0002] In recent years, with the continuous improvement of the performance requirements of components such as high-frequency inductors and high-frequency transformers, the importance of nanocrystalline soft magnetic alloy strips with excellent soft magnetic properties in power electronic component applications has become increasingly prominent, and their application scenarios have also expanded rapidly. Currently, nanocrystalline soft magnetic alloy strips are mostly used in toroidal magnetic cores in components such as inductors and transformers (e.g., Figure 1 As shown), however, to meet the complex application environments and increasingly precise market demands, the structures of electronic components have become more complex and diverse. Common toroidal magnetic cores can no longer meet the needs of many applications, and complex, irregularly shaped (such as racetrack-shaped, rectangular, or other irregular shapes) nanocrystalline magnetic cores (such as...) are becoming increasingly necessary. Figure 2 (As shown) It developed rapidly and gradually became a sought-after product in the market.

[0003] The fabrication of irregularly shaped nanocrystalline magnetic cores requires shaping fixtures for positioning and shaping during adhesive impregnation and curing. CN202120473450.8 provides a quick-assembly fixture for magnetic cores, which can be used to assemble multiple cores simultaneously, is reusable, facilitates the assembly of racetrack-shaped cores, has a simple structure, and is suitable for mass production. However, this fixture design cannot precisely control the thickness and parallelism of the laminations on both sides of the core, making it unsuitable for manufacturing magnetic cores requiring high dimensional accuracy of the laminations after shaping. Therefore, it is necessary to design and develop a quick-assembly fixture that can meet the requirements for different lamination sizes and parallelism. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a tooling suitable for impregnating, curing, and shaping magnetic material laminations with adhesive. This tooling can precisely control the thickness and parallelism of the laminations on both sides of the magnetic core, meeting the high precision requirements for magnetic core fabrication.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fixture for impregnating, curing, and shaping magnetic material laminations with adhesive includes a base plate assembly and a core shaping assembly. The base plate assembly includes a base plate, a positioning post on one side of the base plate, and a limiting post on the other side of the base plate. A tightening bolt is fitted to the center of each limiting post. The core shaping assembly is placed on the same horizontal plane between the positioning post and the limiting post. The core shaping assembly includes baffles, an inner core mold, and a limiting plate. Multiple baffles are placed vertically on the base plate at equal intervals. The inner core mold is movably placed on the base plate, located at the center of adjacent baffles. The inner core mold serves as a support assembly for the magnetic core to be shaped, and the magnetic core is fitted onto the inner core mold. The inner core mold and the corresponding baffles on both sides form a compression shaping area for the magnetic core to be shaped. The limiting plate is movably disposed between the inner core mold and the corresponding baffle, located on the upper and lower surfaces of the magnetic core to be shaped.

[0007] In a further technical solution, the base plate adopts a hollow structure in the middle, and the positioning post and the limiting post are welded parallel to both sides of the base plate for fixation.

[0008] In a further technical solution, the baffle is set on both sides of the magnetic core to be shaped. The baffle is pushed and squeezed to the predetermined thickness size by the tightening bolts on the limiting post. The height of the baffle is 2-4mm higher than the height of the magnetic core to be shaped.

[0009] In a further technical solution, the inner mold of the magnetic core is assembled at the center of the magnetic core to be shaped for support, thereby realizing the basic overall shape of the racetrack-shaped magnetic core. The height of the inner mold of the magnetic core is 2-4mm higher than the height of the magnetic core to be shaped.

[0010] In a further technical solution, there are multiple limiting plates, which are placed sequentially on the upper and lower planes of the magnetic core to be shaped, located between the inner mold of the magnetic core and the corresponding baffle; the width of the limiting plate is the same as the required thickness of the stacked magnetic core to be shaped.

[0011] In a further technical solution, the limiting plate is provided with multiple through holes evenly distributed.

[0012] In a further technical solution, the inner mold of the magnetic core and the corresponding baffle form a positioning unit, and the shaping fixture includes three shaping units.

[0013] In a further technical solution, the baffle, the inner mold of the magnetic core, and the limiting plate are all movable.

[0014] The technical solution of this utility model has the following beneficial effects:

[0015] 1. It can well meet the thickness requirements of the laminated wafers after the magnetic core is impregnated and shaped;

[0016] 2. The overall parallelism of the magnetic core laminations is relatively good;

[0017] 2. Capable of assembling 3 (or more) magnetic cores for simultaneous shaping;

[0018] 4. The mold assembly structure is simple, the operation process is convenient, and the reliability and repeatability are strong. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a circular toroidal magnetic core structure.

[0020] Figure 2 This is a schematic diagram of an irregularly shaped nanocrystalline magnetic core structure.

[0021] Figure 3 This is a schematic diagram of the shaping tooling structure of this utility model (including the magnetic core to be shaped).

[0022] Figure 4 for Figure 3 A schematic diagram of the rear structure;

[0023] In the diagram: 1. Base plate; 2. Positioning post; 3. Limiting post; 4. Tightening bolt; 5. Baffle; 6. Inner mold of magnetic core; 7. Limiting plate; 8. Magnetic core to be shaped. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] like Figure 3 and Figure 4 As shown, a fixture suitable for adhesive impregnation, curing, and shaping of stacked magnetic materials includes a base plate assembly and a core shaping assembly. The base plate assembly consists of two positioning posts 2 welded parallel to each other on one end of a base plate 1, and two limiting posts 3 welded to the other end. Tightening bolts 4 are fitted to the center of each limiting post 3. The core shaping assembly is placed between the positioning posts 2 and the limiting posts 3 on the same horizontal plane and consists of a baffle 5, a core inner mold 6, and a limiting plate 7. The base plate assembly and the core shaping assembly compress and position the annular magnetic core, transforming it into a pre-deformed racetrack-shaped magnetic core. After pre-deformation, the core undergoes adhesive impregnation and curing.

[0026] The base plate 1 has a hollow structure in the middle, and the positioning post 2 and the limiting post 3 are welded parallel to each other on both sides of the base plate 1 for fixation.

[0027] The baffles 5 are placed on both sides of the magnetic core 8 to be shaped. The baffles 5 are pushed and pressed against the magnetic core 8 by the tightening bolts 4 on the limiting posts 3. The height of the baffles 5 is 2-4 mm higher on each side than the height of the magnetic core.

[0028] The inner mold 6 of the magnetic core is assembled in the center of the magnetic core 8 to be shaped and supported, so as to realize the basic shape of the overall track-shaped magnetic core. The height of the inner mold 6 is 2~4mm higher on one side than the height of the magnetic core.

[0029] Multiple limiting plates 7 are placed sequentially on the upper and lower planes of the magnetic core 8 to be shaped, located between the inner mold 6 of the magnetic core and the corresponding baffle 5; the width of the limiting plate 7 is the same as the required thickness of the stacked sheets. Multiple through holes are evenly formed on the limiting plate 7.

[0030] The inner mold 6 of the magnetic core and the corresponding baffle 5 form a positioning unit. In this embodiment, the shaping tooling includes three shaping units.

[0031] The shaping tooling of this utility model includes the following steps when in use:

[0032] (1) The inner core mold 6 is assembled in the center of the annular magnetic core for support, so as to realize the basic shape of the racetrack-shaped magnetic core. The assembly of the three sets of inner core molds 6 and the magnetic core is completed in sequence.

[0033] (2) Take a baffle 5 and set it close to the positioning post 2. Then set the magnetic core inner mold 6 assembled in step (1) and the magnetic core assembly close to the baffle 5 and set the corresponding baffle 5 on the other side. The same steps are used to complete the pre-positioning of the three assembly parts. The outermost baffle 5 is set close to the tightening bolt 4.

[0034] (3) Limiting plates 7 are set on the upper and lower surfaces of the magnetic core 8 to be shaped. The limiting plates 7 are located between the inner mold 6 of the magnetic core and the corresponding baffle 5. Each magnetic core 8 to be shaped is provided with 4 limiting plates 7.

[0035] (4) Apply external force by tightening bolt 4 to squeeze the outermost baffle 5. The squeezing force is transmitted to the entire device. When the required size of the magnetic core 8 to be shaped matches the size of the limiting plate 7, stop squeezing to complete the shaping operation. Then carry out the glue impregnation and curing process.

[0036] This utility model's shaping fixture places multiple limiting plates 7 sequentially on the upper and lower planes of the magnetic core 8 to be shaped, between the inner mold 6 of the magnetic core and the corresponding baffle 5. The width of the limiting plates 7 is the same as the required thickness of the stacked magnetic core 8. By tightening and loosening bolts 4 to compress the baffle 5 and by the limiting plates 7 supporting the inner mold 6 of the magnetic core and the baffle 5, the thickness of the stacked magnetic core after compression is ensured to be no greater than the upper limit of the required size, thus meeting the product thickness requirements. In addition, by setting baffles 5 on both sides to transmit the compressive force, the overall parallelism of the stacked magnetic core is well-consistent.

[0037] The base plate 1, positioning post 2, limiting post 3, tightening bolt 4, baffle 5, magnetic core inner mold 6, and limiting plate 7 of this utility model device are all made of stainless steel.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A tooling suitable for impregnating, curing, and shaping magnetic material stacks with adhesive, characterized in that, The system includes a base plate assembly and a magnetic core shaping assembly. The base plate assembly includes a base plate (1), a positioning post (2) disposed on one side of the base plate (1), and a limiting post (3) disposed on the other side of the base plate (1). A tightening bolt (4) is fitted at the center of the limiting post (3). The magnetic core shaping assembly is placed on the same horizontal plane between the positioning post (2) and the limiting post (3). The magnetic core shaping assembly includes a baffle (5), a magnetic core inner mold (6), and a limiting plate (7). There are multiple baffles (5). The magnetic core inner mold (6) is placed vertically on the base plate (1) at equal intervals. The inner mold (6) is movably placed on the base plate (1) and located at the center of the adjacent baffle (5). The inner mold (6) serves as a support component for the magnetic core (8) to be shaped. The inner mold (6) and the corresponding baffles (5) on both sides form the extrusion and shaping area of ​​the magnetic core (8) to be shaped. The limiting plate (7) is movably disposed between the inner mold (6) and the corresponding baffle (5) and located on the upper and lower surfaces of the magnetic core (8) to be shaped.

2. The tooling for impregnating, curing, and shaping magnetic material stacks with adhesive as described in claim 1, characterized in that, The base plate (1) has a hollow structure in the middle, and the positioning column (2) and the limiting column (3) are welded parallel to each other on both sides of the base plate (1) for fixation.

3. The tooling for impregnating, curing, and shaping magnetic material stacks with adhesive as described in claim 1, characterized in that, The baffle (5) is set on both sides of the magnetic core (8) to be shaped. The baffle (5) is pushed and squeezed to the desired thickness by the tightening bolt (4) on the limiting post (3). The height of the baffle (5) is 2-4mm higher than the height of the magnetic core (8).

4. The tooling for impregnating, curing, and shaping magnetic material stacks with adhesive as described in claim 1, characterized in that, The inner mold (6) of the magnetic core is assembled in the center of the magnetic core to be shaped (8) for support, so as to realize the basic shape of the overall track-shaped magnetic core. The height of the inner mold (6) is 2-4mm higher than the height of the magnetic core to be shaped (8).

5. The fixture for impregnating, curing, and shaping magnetic material laminates with adhesive according to claim 1, characterized in that, The number of limiting plates (7) is multiple, and they are placed sequentially on the upper and lower planes of the magnetic core (8) to be shaped, located between the inner mold (6) of the magnetic core and the corresponding baffle (5); the width of the limiting plate (7) is the same as the thickness required for the stacking of the magnetic core (8) to be shaped.

6. The tooling for impregnating, curing, and shaping magnetic material laminates with adhesive as described in claim 1, characterized in that, The limiting plate (7) has multiple through holes evenly distributed on it.

7. The tooling for impregnating, curing, and shaping magnetic material laminates with adhesive as described in claim 1, characterized in that, The magnetic core inner mold (6) and the corresponding baffle (5) form a positioning unit, and the shaping tooling includes three shaping units.

8. The tooling for impregnating, curing, and shaping magnetic material laminates with adhesive according to claim 1, characterized in that, The number of positioning posts (2) and limiting posts (3) are both two.

9. A tooling for impregnating, curing, and shaping magnetic material stacks with adhesive, as described in claim 1, characterized in that, The baffle (5), the magnetic core inner mold (6), and the limiting plate (7) are all movable.

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