A mechanism for forming and pressing a soft ferrite magnetic steel

Abstract

The utility model provides a kind of ferrite soft magnetic steel forming and press mounting mechanism, including pressure head top plate, press mounting guide plate, support base plate;Pressure head top plate, press mounting guide plate, support base plate between by multiple linear bearing guide column connection;The lower end of the pressure head top plate is equipped with profiled press head, and the upper end of support base plate is equipped with fan profiled support seat;The upper end of the press mounting guide plate is equipped with profiled active forming cylinder, profiled auxiliary forming cylinder and magnetic steel loading groove, and the lower end is equipped with profiled press mounting guide column, and profiled press head, profiled press mounting guide column, fan profiled support seat cooperate work.The utility model is formed to ferrite soft magnetic steel by profiled active forming cylinder, profiled auxiliary forming cylinder, profiled press mounting guide column and fan press mounting, to reduce press mounting interference and other abnormalities, ensure ferrite soft magnetic steel surface finish, forming precision and press mounting gap consistency, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to a mechanism for forming and pressing ferrite soft magnets, belonging to the technical field of rotor forming process for axial flow cooling fans in the communications industry. Background Technology

[0002] The ferrite soft magnet forming and pressing mechanism is a combined device mainly used to form ferrite soft magnets and press them into fan blades.

[0003] Ferrite soft magnets are manufactured in a rectangular sheet shape. They need to be bent and molded into a ring to match the shape of the cooling fan rotor. During this molding process, the inner circle of the magnet is under compression, while the outer circle is under expansion. This results in the inner circle bearing compressive force and the outer circle bearing tensile force, which can easily lead to defects such as radial fracture, uneven thickness after molding, excessively large or small gaps at the interface, and inconsistent diameters of the magnetic field working surface after molding. Among these issues, radial fracture of the magnet directly leads to its scrapping, resulting in economic losses; uneven thickness after molding causes large fluctuations in the rotor's air gap magnetic field, ultimately leading to poor consistency in the fan's key parameters such as pressure and flow rate; excessively large interface gaps after molding reduce the interference fit between the magnet and the rotor, lowering the bonding force generated by the interference fit and ultimately reducing the fan's reliability; excessively small interface gaps after molding cause the magnet to be subjected to excessive compression during the molding process, resulting in poor inner diameter after molding, which also affects the fan's performance; and inconsistent working surfaces of the rotor's magnetic field after molding cause fluctuations in the motor's air gap magnetic flux density, leading to poor fan performance consistency.

[0004] Existing ferrite soft magnet forming mechanisms employ a complete semi-circular design for both the active and auxiliary forming cylinders. After initial manual forming of the magnet, two semi-circular fixtures are used to press the magnet firmly, and then a press is used to press the magnetic strip into the fan blade. During long-term assembly, it has been found that because the two semi-circles do not precisely fit the outer circle of the formed magnet, and the pressing into the fan blade lacks guidance, the tolerance for error is low. This leads to magnet deformation, pressing interference, and other problems, resulting in magnet cracking, surface damage, and poor dimensional consistency after forming. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a mechanism for forming and pressing ferrite soft magnets. This mechanism improves the surface smoothness, forming accuracy, and consistency of gaps after pressing of ferrite soft magnets, while also increasing production efficiency.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a mechanism for forming and pressing ferrite soft magnets, including a pressing head top plate, a pressing guide plate, and a supporting base plate; the pressing head top plate, the pressing guide plate, and the supporting base plate are connected by multiple linear bearing guide columns; the lower end of the pressing head top plate is provided with a contour pressing head, and the upper end of the supporting base plate is provided with a fan blade contouring support seat; the upper end of the pressing guide plate is provided with a contouring active forming cylinder, a contouring auxiliary forming cylinder, and a magnet feeding groove, and the lower end is provided with a contouring pressing guide column, and the contouring pressing head, the contouring pressing guide column, and the fan blade contouring support seat work together.

[0008] The pressure head top plate is equipped with multiple linear bearings, and the linear bearing guide column is connected to the linear bearing.

[0009] The upper end face of the press-fit guide plate is provided with a sliding guide rail, and the active forming cylinder and the auxiliary forming cylinder are connected to the press-fit guide plate through the sliding guide rail.

[0010] The contouring part of the contouring active forming cylinder is a standard semi-circular design, with an inward-facing flared opening on the outside of the arc.

[0011] The contouring auxiliary forming cylinder adopts an arc design for the pressure head top plate / pressure guide plate, with an outward-facing flared opening outside the arc.

[0012] The active forming cylinder and the auxiliary forming cylinder are integrated cylinder and tooling structures.

[0013] The outer diameter of the contouring indenter is the same as the inner diameter of the ferrite soft magnet.

[0014] The inner diameter of the conformal press-fitted guide post is the same as that of the ferrite soft magnet.

[0015] The beneficial effects of this utility model are as follows: the ferrite soft magnet is formed and the fan blade is pressed by the active forming cylinder, the auxiliary forming cylinder, and the pressing guide column. It has a forming guiding function, which can effectively avoid pressing interference and ensure smooth pressing. The forming is fast and the forming accuracy is high, which ensures the surface smoothness of the ferrite soft magnet, the forming accuracy and the consistency of the gap after pressing, improves production efficiency and reduces the intensity of manual operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 Sectional view along the BB direction;

[0018] Figure 3 yes Figure 1 Side view;

[0019] Figure 4 yes Figure 1Remove the top section view of the pressure head plate;

[0020] In the diagram: 1-Top plate of the pressure head, 2-Linear bearing guide column, 3-Pressure fitting guide plate, 4-Support base plate, 5-Contouring pressure head, 6-Contouring pressure fitting guide column, 7-Fan blade contouring support seat, 8-Contouring active forming cylinder, 9-Contouring auxiliary forming cylinder, 10-Magnetic steel feeding groove, 11-Linear bearing, 12-Sliding guide rail. Detailed Implementation

[0021] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0022] like Figures 1-4 As shown, the top of the contouring pressure head 5 is connected to the pressure head top plate 1, the contouring active forming cylinder 8, the contouring auxiliary forming cylinder 9, and the contouring pressing guide column 6 are installed on the pressing guide plate 3, and the fan blade contouring support seat 7 is installed on the support base plate 4.

[0023] The working process of this utility model is as follows:

[0024] After the rectangular strip-shaped ferrite soft magnet is fed from the magnet feeding trough 10, it is pushed to the positioning baffle of the contouring active forming cylinder 8. The contouring active forming cylinder 8 and the contouring auxiliary forming cylinder 9 are designed as an integrated cylinder and tooling. The contouring active forming cylinder 8 pushes the ferrite soft magnet to cooperate with the contouring pressing guide column 6 to press the ferrite soft magnet into a semi-circle. The contouring auxiliary forming cylinder 9 pushes the other half of the ferrite soft magnet to cooperate with the contouring pressing guide column 6 to complete the overall forming. The top plate of the pressing head 1 drives the contouring pressing head 5 to press the formed ferrite soft magnet into the contouring pressing guide column 6, and finally presses in the fan blade.

[0025] Preferably, the active forming cylinder 8 and the auxiliary forming cylinder 9 adopt a contouring design. The contouring part of the active forming cylinder 8 is a standard semi-circular design with an inward flared opening outside the arc. The auxiliary forming cylinder 9 adopts a 1 / 3 arc design with an outward flared opening outside the arc.

[0026] Furthermore, the outer diameter of the contouring pressure head 5 is the same as the inner diameter of the ferrite soft magnet, the inner diameter of the contouring press-fitting guide column 6 is the same as the inner diameter of the ferrite soft magnet, and the fan blade contouring support 7 is designed according to the three-dimensional model of the fan blade to ensure that the bottom of the fan blade is completely fitted with the fan blade contouring support 7.

[0027] Preferably, the contouring pressure head 5, the contouring pressure guide column 6, and the fan blade contouring support seat 7 are aligned at the center and installed.

[0028] In practical applications, depending on the production cycle and output requirements, this device can be used alone in conjunction with a press and operated manually, or it can be equipped with a servo system, sensing devices, etc. and integrated into an automated production line to achieve fully automated production and reduce labor costs.

[0029] The beneficial effects of this utility model are as follows:

[0030] 1. It has strong applicability; it can be set up offline and operated manually, or it can be integrated into automated production line equipment to achieve automated production.

[0031] 2. Highly targeted: The forming tooling adopts outward-facing and inward-facing flared mouth designs, which can play a guiding role during press forming. At the same time, the forming tooling of the contouring auxiliary forming cylinder adopts a 1 / 3 circle design to avoid interference, which can effectively ensure the forming quality.

[0032] 3. The structure is simple and easy to implement, with no special electronic components or raw materials. It can be used in complex mechanical environments and extreme temperature environments, and there are no restrictions on the usage environment.

[0033] 4. High efficiency and easy to promote and apply: This device completes all processing and reset in a short time, with fast cycle time and high efficiency, and has application value in the field of automated production of civil wind turbines.

Claims

1. A mechanism for forming and pressing ferrite soft magnets, comprising a pressure head top plate (1), a pressing guide plate (3), and a support base plate (4), characterized in that: The top plate of the press head (1), the press guide plate (3), and the support base plate (4) are connected by multiple linear bearing guide columns (2); the lower end of the top plate of the press head (1) is provided with a contour press head (5), and the upper end of the support base plate (4) is provided with a fan blade contour support seat (7); the upper end of the press guide plate (3) is provided with a contour active forming cylinder (8), a contour auxiliary forming cylinder (9), and a magnetic steel feeding groove (10), and the lower end is provided with a contour press guide column (6). The contour press head (5), the contour press guide column (6), and the fan blade contour support seat (7) work together.

2. The mechanism for forming and pressing ferrite soft magnets as described in claim 1, characterized in that: The pressure head top plate (1) is provided with multiple linear bearings (11), and the linear bearing guide column (2) is connected to the linear bearing (11).

3. The mechanism for forming and pressing ferrite soft magnets as described in claim 1, characterized in that: The upper end face of the press-fit guide plate (3) is provided with a sliding guide rail (12), and the contour active forming cylinder (8) and the contour auxiliary forming cylinder (9) are connected to the press-fit guide plate (3) through the sliding guide rail (12).

4. The mechanism for forming and pressing ferrite soft magnets as described in claim 1, characterized in that: The contouring part of the contouring active forming cylinder (8) is a standard semi-circular design, with an inward-facing flared mouth on the outside of the arc.

5. The mechanism for forming and pressing ferrite soft magnets as described in claim 1, characterized in that: The contouring auxiliary forming cylinder (9) adopts an arc design of the pressure head top plate (1) / pressure guide plate (3), and the outside of the arc adopts an outward flared mouth.

6. The mechanism for forming and pressing ferrite soft magnets as described in claim 1, characterized in that: The active forming cylinder (8) and the auxiliary forming cylinder (9) are integrated cylinder and tooling structures.

7. The mechanism for forming and pressing ferrite soft magnets as described in claim 1, characterized in that: The outer diameter of the contouring indenter (5) is the same as the inner diameter of the ferrite soft magnet.

8. The mechanism for forming and pressing ferrite soft magnets as described in claim 1, characterized in that: The inner diameter of the conformal press-fitted guide post (6) is the same as the inner diameter of the ferrite soft magnet.

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