CN221551681U

CN221551681U - Concave-convex matching structure for powder forming die

Info

Publication number: CN221551681U
Application number: CN202420056285.XU
Authority: CN
Inventors: 曾伟鑫; 姚光祥
Original assignee: Sunshine Electronic Technology Co ltd
Current assignee: Sunshine Electronic Technology Co ltd
Priority date: 2024-01-10
Filing date: 2024-01-10
Publication date: 2024-08-16
Anticipated expiration: 2034-01-10

Abstract

The utility model discloses a concave-convex matching structure for a powder forming die, which comprises a die body and a pressing sheet, wherein a middle column is arranged in the middle of the die body, side columns are arranged on two sides of the die body, and the middle column and the side columns are hollowed out to form a die cavity consistent with the appearance of a magnetic core; the tops of the outer surfaces of the middle column and the side columns are respectively provided with a concave groove recessed towards the inside of the die cavity, and the concave grooves are in plug-in fit with the bosses on the pressing sheets. According to the utility model, the grooves are formed in the side columns and the middle column ends of the die body and matched with the pressing sheets arranged on the boss, when the blank arrangement sintering is carried out on the magnetic core, the two pressing sheets are placed on the tops of the middle column and the side columns and the boss corresponds to the grooves, and as the grooves at three points are matched with the boss, the magnetic core is affected by the positioning and cannot be distorted and deformed during sintering, so that the dimensional consistency of the sintered magnetic core is improved.

Description

Concave-convex matching structure for powder forming die

Technical Field

The utility model relates to the technical field of magnetic core molds, in particular to a concave-convex structure for a powder forming mold.

Background

The powder forming machine is mainly used in metallurgical industry, medicine industry and ferrite industry, and can be used for processing and forming medicinal material powder and processing iron powder into a model or machine of equipment. With the development of new energy industry, a plurality of manganese-zinc soft magnetic ferrite products need higher side column designs, and the products produced after the conventional mold design are easy to change after sintering, so that the products are poor.

Disclosure of utility model

In order to solve the problem of poor size caused by deformation of the existing magnetic core after sintering due to high side posts, the utility model provides a concave-convex structure for a powder forming die.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The concave-convex matching structure for the powder forming die comprises a die body and a pressing sheet, wherein a middle column is arranged in the middle of the die body, side columns are arranged on two sides of the die body, and the middle column and the side columns are hollowed out to form a die cavity consistent with the appearance of a magnetic core; the tops of the outer surfaces of the middle column and the side columns are respectively provided with a concave groove recessed towards the inside of the die cavity, and the concave grooves are in plug-in fit with the bosses on the pressing sheets.

Preferably, the number of the side columns is four, and the side columns are symmetrically distributed on two sides of the die body; the middle column is strip-shaped, and grooves are formed in two ends of the middle column; the number of the pressing sheets is two, and the bosses on the pressing sheets correspond to the grooves on the middle column and the side columns on one side of the die body.

Preferably, the external dimension of the boss is smaller than the internal dimension of the groove, and the height of the boss is smaller than the depth of the groove, so that the boss can be smoothly sleeved in the groove.

Preferably, the demoulding inclination of the inner part of the die cavity of the die body is 0.3mm on one side.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the grooves are formed in the side columns and the middle column ends of the die body and matched with the pressing sheets arranged on the boss, when the blank arrangement sintering is carried out on the magnetic core, the two pressing sheets are placed on the tops of the middle column and the side columns and the boss corresponds to the grooves, and as the grooves at three points are matched with the boss, the magnetic core is affected by the positioning and cannot be distorted and deformed during sintering, so that the dimensional consistency of the sintered magnetic core is improved.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a front view structure of an embodiment of the present utility model;

FIG. 3 is a schematic top view of an embodiment of the present utility model;

FIG. 4 is a schematic diagram showing a front view of a tablet according to an embodiment of the present utility model;

fig. 5 is a schematic top view of a tablet according to an embodiment of the present utility model.

In the figure: 1. the die comprises a die body, 2, a middle column, 3, side columns, 4, grooves, 5, a die cavity, 6, a tabletting, 601 and a boss.

Detailed Description

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

As shown in fig. 1 to 5, the embodiment of the utility model comprises a die body 1 and a pressing sheet 6, wherein a center column 2 is arranged in the middle of the die body 1, side columns 3 are arranged on two sides of the die body, and a die cavity 5 consistent with the appearance of a magnetic core is formed by hollowing out the inside of the center column 2 and the side columns 3; the tops of the outer surfaces of the middle column 2 and the side column 3 are respectively provided with a groove 4 recessed towards the inside of the die cavity 5 and are in plug-in fit with a boss 601 on the pressing sheet 6.

Preferably, the number of the side columns 3 is four, and the side columns are distributed on two sides of the die body 1; the middle column 2 is strip-shaped, and grooves 4 are formed in two ends of the middle column; the number of the pressing sheets 6 is two, and the boss 601 on the pressing sheet 6 corresponds to the groove 4 on the middle column 2 and the side column 3 on one side of the die body 1; the external dimension of the boss 601 is 4.9x4.9x1.1mm, and the internal dimension of the groove 4 is 5 x 1.2mm, so that the boss 601 can be smoothly sleeved in the groove 4.

Through using powder make-up machine cooperation mould body 1 to make the powder suppression magnetic core, because the center pillar 2 of mould body 1 and side pillar 3 top all set up recess 4, so the cylinder tip of magnetic core has recess 4, when arranging the base sintering to the magnetic core, place two preformings 6 at center pillar 2 and side pillar 3 top and boss 601 and correspond recess 4, because recess 4 and boss 601 cooperation of three points, receive its location influence when making the magnetic core sintering, unable distortion to promote the uniformity of magnetic core sintering back size.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A unsmooth structure of joining in marriage for powder forming die, its characterized in that: the die comprises a die body and a pressing sheet, wherein a middle column is arranged in the middle of the die body, side columns are arranged on two sides of the die body, and the middle column and the side columns are hollowed out to form a die cavity consistent with the appearance of a magnetic core; the tops of the outer surfaces of the middle column and the side columns are respectively provided with a concave groove recessed towards the inside of the die cavity, and the concave grooves are in plug-in fit with the bosses on the pressing sheets.

2. A relief structure for a powder forming die according to claim 1, characterized in that: the number of the side columns is four, and the side columns are symmetrically distributed on two sides of the die body; the middle column is strip-shaped, and grooves are formed in two ends of the middle column; the number of the pressing sheets is two, and the bosses on the pressing sheets correspond to the grooves on the middle column and the side columns on one side of the die body.

3. A male-female structure for a powder molding die according to claim 1 or 2, characterized in that: the external dimension of the boss is smaller than the internal dimension of the groove, and the height of the boss is smaller than the depth of the groove, so that the boss can be smoothly sleeved in the groove.

4. A relief structure for a powder forming die according to claim 3, characterized in that: the demoulding inclination of the inner part of the die cavity of the die body is 0.3mm on one side.