CN211980413U

CN211980413U - Magnetic core pressing die

Info

Publication number: CN211980413U
Application number: CN202020907112.6U
Authority: CN
Inventors: 刘云龙; 黄卫; 邵振凯
Original assignee: Shandong Dongtai Fangsi Electronic Co ltd
Current assignee: Shandong Dongtai Fangsi Electronic Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-11-20
Anticipated expiration: 2030-05-26

Abstract

A magnetic core pressing die belongs to the technical field of magnetic core production equipment. Including external mold (1), go up mould (2) and lower mould (3), the middle part of external mold (1) is provided with die cavity (103), its characterized in that: bosses (5) are symmetrically arranged on the bottom of the upper die (2) or two sides of the top of the lower die (3), the sectional area of the upper part of the die cavity (103) is larger than that of the lower part, and overflow parts (102) for magnetic powder to overflow are formed on two sides of the upper die (2). This magnetic core embossing mold utensil's last mould both sides are provided with the portion of spilling over, when suppressing the magnetic core, and the unnecessary magnetic in both sides overflows through last mould and between the portion of spilling over, avoids the magnetic of the both sides of magnetic core too much, and then guarantees the density homogeneous of whole magnetic core after the suppression, avoids the groove of magnetic core to easily produce the fracture problem because density is too big, and the qualification rate of magnetic core production is high.

Description

Magnetic core pressing die

Technical Field

A magnetic core pressing die belongs to the technical field of magnetic core production equipment.

Background

The magnetic core is usually formed by pressing through a die, the die usually includes an outer die, an upper die and a lower die, a die cavity is arranged in the middle of the outer die, and the lower portion of the upper die and the upper portion of the lower die extend into the die cavity, so that the magnetic core is pressed. The magnetic core is the cuboid usually, but the both sides of some magnetic cores can set up the recess, and current mould is when pressing the magnetic core, because the thickness of magnetic core both sides will be less than the thickness at middle part, and this density that just leads to pressing to accomplish back magnetic core both sides is different with the density at middle part, and the recess of the magnetic core of production goes out very easy fracture, influences the use of magnetic core, can damage the mould when serious, leads to the mould to scrap.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: overcome prior art's not enough, provide a density that makes the magnetic core that the suppression was accomplished even, avoid the magnetic core embossing mold utensil of groove department easy to split.

The utility model provides a technical scheme that its technical problem adopted is: this magnetic core embossing mold utensil includes the external mold, goes up mould and lower mould, and the middle part of external mold is provided with die cavity, its characterized in that: bosses are symmetrically arranged at the bottom of the upper die or at two sides of the top of the lower die, the sectional area of the upper part of the die cavity is larger than that of the lower part of the die cavity, and overflow parts for magnetic powder to overflow are formed at two sides of the upper die.

Preferably, the cross section of the die cavity is rectangular.

Preferably, the width of the upper part of the cavity is larger than that of the lower part, and the overflow parts are formed on both sides of the upper part of the cavity.

Preferably, the bosses are symmetrically arranged on two sides of the top of the lower die.

The outer mold is a cuboid, and the mold cavity is a through hole vertically arranged in the middle of the outer mold.

Preferably, convex mounting parts are symmetrically arranged on two sides of the outer die.

Preferably, both ends of the overflow part extend out of the die cavity.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

1. this magnetic core embossing mold utensil's last mould both sides are provided with the portion of spilling over, when suppressing the magnetic core, and the unnecessary magnetic in both sides overflows through last mould and between the portion of spilling over, avoids the magnetic of the both sides of magnetic core too much, and then guarantees the density homogeneous of whole magnetic core after the suppression, avoids the groove of magnetic core to easily produce the fracture problem because density is too big, and the qualification rate of magnetic core production is high.

2. The width of die cavity upper portion is greater than the width of lower part to guarantee that the unnecessary magnetic of both sides can be timely overflow through the portion that overflows, can avoid the magnetic to overflow from the both ends of die cavity again, make the density homogeneous of whole magnetic core.

3. The boss symmetry sets up in the top both sides of lower mould, can guarantee that the magnetic core takes the notched one side suppression reliable, can also make the unnecessary magnetic of both sides can smoothly overflow, and then make the suppression of whole magnetic core even.

4. The installation part facilitates the installation of the outer die.

Drawings

Fig. 1 is a schematic sectional front view of a magnetic core pressing mold in example 1.

Fig. 2 is a schematic perspective view of the outer mold in example 1.

Fig. 3 is a schematic sectional front view of a magnetic core pressing mold in example 2.

In the figure: 1. outer die 101, mounting portion 102, overflow portion 103, cavity 2, upper die 3, lower die 4, magnetic core 401, recess 5, boss.

Detailed Description

Fig. 1 to 2 are preferred embodiments of the present invention, and the present invention will be further explained with reference to fig. 1 to 3.

A magnetic core pressing die comprises an outer die 1, an upper die 2 and a lower die 3, wherein a die cavity 103 is arranged in the middle of the outer die 1, bosses 5 are symmetrically arranged at the bottom of the upper die 2 or on two sides of the top of the lower die 3, the sectional area of the upper portion of the die cavity 103 is larger than that of the lower portion, and overflow portions 102 for magnetic powder to overflow are formed on two sides of the upper die 2. This magnetic core embossing mold utensil's last mould 2 both sides are provided with overflow portion 102, when suppressing magnetic core 4, and the unnecessary magnetic in both sides overflows between through last mould 2 and overflow portion 102, avoids the magnetic of the both sides of magnetic core 4 too much, and then guarantees the density homogeneous of whole magnetic core 4 after the suppression, avoids the recess 401 department of magnetic core 4 because density is too big and easily produces the fracture problem, and the qualification rate of magnetic core 4 production is high.

The present invention is further described with reference to specific embodiments, however, it will be understood by those skilled in the art that the detailed description given herein with respect to the drawings is for better explanation and that the present invention is necessarily to be construed as limited to those embodiments, and equivalents or common means thereof will not be described in detail but will fall within the scope of the present application.

Example 1

As shown in FIGS. 1-2: magnetic core 4 is the cuboid, and one side of magnetic core 4 is provided with recess 401, and recess 401 sets up along the length direction of magnetic core 4, and the bilateral symmetry of one side of magnetic core 4 is provided with recess 401.

The outer die 1 is vertically arranged in a cylindrical shape, the installation part 101 is arranged around the upper part of the outer die 1, and the installation part 101 facilitates installation of the outer die 1.

The middle part of the outer die 1 is provided with a vertical through hole to form a die cavity 103, and the cross section of the die cavity 103 is rectangular. The width of the upper portion of the cavity 103 is greater than the width of the lower portion, thereby forming the overflow 102 at both sides of the top of the cavity 103. The length of the overflow part 102 is greater than that of the die cavity 103, and the two ends of the overflow part 102 extend out of the die cavity 103, so that the magnetic powder at the two ends of the die cavity 103 can overflow more smoothly.

The upper die 2 is arranged right above the die cavity 103, the cross section of the upper die 2 is rectangular, and the cross section area of the upper die 2 is slightly smaller than that of the die cavity 103, so that the lower part of the upper die 2 can slide into the die cavity 103, and magnetic powder can be prevented from overflowing from a gap between the upper die 2 and the die cavity 103.

The lower die 3 is arranged right below the die cavity 103, the cross section of the lower die 3 is also rectangular, and the cross section area of the lower die 3 is slightly smaller than that of the die cavity 103, so that the upper part of the lower die 3 can slide into the die cavity 103 and can prevent magnetic powder from flowing out of a gap between the lower die 3 and the die cavity 103.

In this embodiment, boss 5 sets up at the top of lower mould 3, and boss 5 sets up along the length direction level of lower mould 3, and boss 5 has the symmetry to set up two in lower mould 3 both sides, and the boss 5 outside is with the corresponding side parallel and level of lower mould 3.

This magnetic core embossing mold utensil is when using, at first in the lower part of die cavity 103 stretches into die cavity 103 by the top of lower mould 3, then add the magnetic to die cavity 103 in, treat the magnetic and add the completion back, lower mould 3 rises to the assigned position, then go up mould 2 and descend, and cooperate with lower mould 3 and suppress the magnetic in the die cavity 103, because the thickness of magnetic core 4 both sides will be less than the thickness at middle part, therefore the unnecessary magnetic of both sides enters into the portion 102 that overflows of last mould 2 both sides, guarantee the density homogeneous of magnetic core 4 after the suppression.

Example 2

As shown in fig. 3: example 2 differs from example 1 in that: the boss 5 sets up in the bottom of last mould 2, and boss 5 sets up along the length direction level of last mould 2, and boss 5 has the symmetry to set up two in last mould 2 both sides.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a magnetic core embossing mold utensil, includes external mold (1), goes up mould (2) and lower mould (3), and the middle part of external mold (1) is provided with die cavity (103), its characterized in that: bosses (5) are symmetrically arranged on the bottom of the upper die (2) or two sides of the top of the lower die (3), the sectional area of the upper part of the die cavity (103) is larger than that of the lower part, and overflow parts (102) for magnetic powder to overflow are formed on two sides of the upper die (2).

2. The magnetic core pressing mold according to claim 1, wherein: the section of the die cavity (103) is rectangular.

3. The magnetic core pressing mold according to claim 1 or 2, wherein: the width of the upper part of the die cavity (103) is larger than that of the lower part, and the overflow parts (102) are formed on two sides of the upper part of the die cavity (103).

4. The magnetic core pressing mold according to claim 1, wherein: the bosses (5) are symmetrically arranged on two sides of the top of the lower die (3).

5. The magnetic core pressing mold according to claim 1, wherein: the outer die (1) is a cuboid, and the die cavity (103) is a through hole vertically formed in the middle of the outer die (1).

6. The magnetic core pressing mold according to claim 1, wherein: the outer die (1) is vertically arranged in a cylindrical shape, and the die cavity (103) is a through hole vertically arranged in the middle of the outer die (1).

7. The magnetic core pressing mold according to claim 1 or 5, wherein: convex mounting parts (101) are symmetrically arranged on two sides of the outer die (1).

8. The magnetic core pressing mold according to claim 1, wherein: both ends of the overflow part (102) extend out of the die cavity (103).