Anti-cracking electromagnetic core blank

Abstract

The utility model relates to an anti-cracking electromagnetic core blank, which is applied to the technical field of electromagnetic cores, solves the problems that the phenomena of uneven sintering temperature and electromagnetic core cracking easily exist and the yield is reduced during sintering, and comprises a magnetic core base and a wrapping post arranged on the upper end surface of the magnetic core base, side plates are arranged at the two ends of the upper end face of the magnetic core base in the length direction of the magnetic core base, the two side plates are symmetrically arranged along the axis of the wrapping post, an anti-cracking assembly is arranged on the lower end face of the magnetic core base, and the shape of the anti-cracking assembly is matched with that of the magnetic core base; the electromagnetic core has the advantages that the sintering temperature is uniform during subsequent sintering of the electromagnetic core, so that the cracking phenomenon is avoided, and the quality is improved; in addition, the contact area between the electromagnetic core and a sintering bearing plate can be reduced, the flatness of the electromagnetic core and the bearing plate is improved, the use of zirconium powder is reduced, and the cost is saved.

Description

Technical Field

[0001] The utility model is applied in the technical field of electromagnetic cores, and particularly relates to an anti-cracking electromagnetic core blank. Background Art

[0002] In the existing process of processing the electromagnetic core, the processed blank is directly placed on a sintering support plate, and then sent to a sintering device for sintering. Since the lower end surface of the electromagnetic core is flat, the sintering support plate is also flat. When the electromagnetic core is placed on the sintering support plate, the surface is in contact with the surface. During sintering, the sintering temperature is prone to unevenness, and the electromagnetic core cracks, thereby reducing the yield. In addition, when the electromagnetic core is placed on the sintering support plate, a layer of zirconium powder needs to be spread on the sintering support plate. Due to the surface-to-surface contact, the contact area with the zirconium powder is large, which increases the amount of zirconium powder used. At the same time, due to the unevenness of the lower end surface of the electromagnetic core, there is also a problem of unstable placement when the surface is in contact with the surface. Utility Model Content

[0003] The utility model aims to provide an anti-cracking electromagnetic core blank, which solves the problem that the electromagnetic core cracks due to uneven sintering temperature during sintering, thereby reducing the yield rate.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides an anti-cracking electromagnetic core blank, comprising a core base and a winding column arranged on the upper end surface of the core base, side panels are arranged at both ends of the upper end surface of the core base along its length direction, and the two side panels are symmetrically arranged along the axis of the winding column, and an anti-cracking component is arranged on the lower end surface of the core base, and the shape of the anti-cracking component is adapted to the shape of the core base.

[0006] Furthermore, the anti-cracking component includes a base plate adapted to the shape of the magnetic core base, and the lower end surface of the base plate is provided with rows and columns of strip grooves, the rows and columns of strip grooves are connected, and the depth of the strip grooves is the same as the thickness of the base plate.

[0007] Furthermore, an outer surface of a connection position between the bottom plate and the magnetic core base is provided with notched grooves along its circumference.

[0008] Furthermore, the thickness of the bottom plate is smaller than the thickness of the magnetic core base.

[0009] Furthermore, the lower end surface of the magnetic core base is provided with rows and columns of strip-shaped protrusions, and the rows and columns of strip-shaped protrusions form an air intake channel.

[0010] Furthermore, the thickness of the strip-shaped protrusion is smaller than the thickness of the magnetic core base.

[0011] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0012] The utility model discloses an anti-cracking electromagnetic core blank. By arranging an anti-cracking component on the lower end surface of the core base, the sintering temperature is relatively uniform when the electromagnetic core is subsequently sintered, thereby avoiding cracking and improving the quality. In addition, the contact area with the sintering support plate can be reduced, the flatness of the electromagnetic core and the support plate can be improved, and the use of zirconium powder can be reduced, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the electromagnetic core in Embodiment 1 of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the anti-cracking component in Example 1 of the utility model;

[0016] Figure 3 It is a schematic structural diagram showing the anti-cracking component in Example 2 of the utility model.

[0017] The reference numerals are described as follows:

[0018] 1. Magnetic core base; 2. Winding column; 3. Side panel; 4. Anti-cracking component; 41. Bottom plate; 42. Strip groove; 5. Notched groove; 6. Strip protrusion; 7. Air intake channel. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Example 1

[0023] refer to Figure 1 and Figure 2 , an anti-cracking electromagnetic core blank provided in this example, includes a core base 1 and a winding post 2 arranged on the upper end surface of the core base 1, side panels 3 are arranged at both ends of the upper end surface of the core base 1 along its length direction, and the two side panels 3 are symmetrically arranged along the axis of the winding post 2, and an anti-cracking component 4 is arranged on the lower end surface of the core base 1, and the shape of the anti-cracking component 4 is adapted to the shape of the core base 1. The anti-cracking component 4 includes a bottom plate 41 adapted to the shape of the core base 1, and the lower end surface of the bottom plate 41 is provided with row and column strip grooves 42, the row and column strip grooves 42 are connected, and the two ends of the row and column strip grooves 42 extend back to back to the side edges of the bottom plate 41, and the depth of the strip groove 42 is the same as the thickness of the bottom plate 41.

[0024] refer to Figure 1 and Figure 2 By providing a bottom plate 41 at the bottom end of the magnetic core base 1 and providing a determinant strip groove 42 on the lower end surface of the bottom plate 41, when the electromagnetic core blank is sintered, high-temperature hot air can enter the determinant strip groove 42, so that the temperature of the electromagnetic core blank during sintering is relatively uniform, thereby avoiding cracking; in addition, before sintering the electromagnetic core, the electromagnetic core is first placed on a sintering support plate, and a layer of zirconium powder is spread on the sintering support plate. There may be uneven spreading of the zirconium powder. At this time, since the lower end surface of the bottom plate 41 is provided with a determinant strip groove 42, the contact area between the bottom plate 41 and the sintering support plate can be reduced, thereby improving the flatness of the electromagnetic core and the support plate, and at the same time, the contact area between the bottom end of the electromagnetic core and the zirconium powder can be reduced, thereby reducing the amount of zirconium powder used.

[0025] The thickness of the bottom plate 41 is less than that of the core base 1. After the electromagnetic core is sintered, in order to meet actual needs, the bottom plate 41 needs to be ground off. By making the thickness of the bottom plate 41 smaller than that of the core base 1, the use of electromagnetic core raw materials can be reduced, saving costs. The outer surface of the connection position between the bottom plate 41 and the core base 1 is provided with a notched groove 5 along its circumference, and the notched groove 5 is used to facilitate checking the grinding amount.

[0026] Example 2

[0027] refer to Figure 3 The content of this embodiment is basically the same as that of the embodiment 1, except that the lower end surface of the core base is provided with row and column strip protrusions 6, which enclose an air inlet channel 7, and the thickness of the strip protrusions 6 is less than the thickness of the core base 1. When the electromagnetic core is sintered, high-temperature gas enters the air inlet channel 7, so that the temperature of the electromagnetic core blank is more uniform during sintering, thereby avoiding cracking and improving the quality. After sintering, the strip protrusions are ground off to meet the actual requirements for the electromagnetic core structure.

[0028] In summary: by providing an anti-cracking component 4 on the lower end surface of the core base 1, the sintering temperature is more uniform when the electromagnetic core is subsequently sintered, thereby avoiding cracking and improving the quality; in addition, it can reduce the contact area with the sintering support plate, improve the flatness of the electromagnetic core and the support plate, and reduce the use of zirconium powder, saving costs.

[0029] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An anti-cracking electromagnetic core blank, characterized in that: The invention comprises a magnetic core base (1) and a winding post (2) arranged on the upper end surface of the magnetic core base (1), side plates (3) being arranged at both ends of the upper end surface of the magnetic core base (1) along its length direction, the two side plates (3) being symmetrically arranged along the axis of the winding post (2), and an anti-cracking component (4) being arranged on the lower end surface of the magnetic core base (1), the shape of the anti-cracking component (4) being adapted to the shape of the magnetic core base (1).

2. The anti-cracking electromagnetic core blank according to claim 1, characterized in that: The anti-cracking component (4) comprises a bottom plate (41) whose shape matches that of the magnetic core base (1); the lower end surface of the bottom plate (41) is provided with row and column strip grooves (42); the row and column strip grooves (42) are connected; and the depth of the strip grooves (42) is the same as the thickness of the bottom plate (41).

3. The anti-cracking electromagnetic core blank according to claim 2, characterized in that: The outer surface of the connection position between the bottom plate (41) and the magnetic core base (1) is provided with notched grooves (5) along its circumference.

4. The anti-cracking electromagnetic core blank according to claim 2 or 3, characterized in that: The thickness of the bottom plate (41) is smaller than the thickness of the magnetic core base (1).

5. The anti-cracking electromagnetic core blank according to claim 1, characterized in that: The lower end surface of the magnetic core base (1) is provided with strip-shaped protrusions (6) arranged in rows and columns, and the strip-shaped protrusions (6) arranged in rows and columns form an air intake channel (7).

6. The anti-cracking electromagnetic core blank according to claim 5, characterized in that: The thickness of the strip-shaped protrusion (6) is smaller than the thickness of the magnetic core base (1).

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