CN-224217347-U - Magnetic material compression molding die

CN224217347UCN 224217347 UCN224217347 UCN 224217347UCN-224217347-U

Abstract

The utility model discloses a magnetic material compression molding die which comprises an outer die and an inner die, wherein the outer die is provided with a slot with an upper end opening, the inner die is arranged in the slot in a sliding way up and down, the inner die is of a hollow structure with the upper end opening, the inner die comprises a bottom block and a plurality of vertical blocks, the plurality of vertical blocks are distributed at the edge positions of the bottom block at equal intervals in a circumferential manner, the adjacent vertical blocks are mutually attached, the bottom ends of the vertical blocks are hinged with the bottom block, and the vertical blocks are arranged on the bottom block in a vertical rotating way. According to the utility model, the vertical block is separated from the blank by rotating the vertical block, so that the blank is basically prevented from being scratched with the vertical block, the probability of damage to corners of the blank is reduced, and the appearance quality and the forming quality of the blank are improved.

Inventors

LI LI
ZHANG YANQING
LIU QICHAO
HU ZHENGHUA
YU LE

Assignees

黄山市江源高新磁材科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250610

Claims (5)

1. A magnetic material compression molding die is characterized by comprising an outer die and an inner die, wherein an inserting groove with an opening at the upper end is formed in the outer die, the inner die is arranged in the inserting groove in a sliding mode up and down, the inner die is of a hollow structure with the opening at the upper end, the inner die comprises a bottom block and a plurality of vertical blocks, the plurality of vertical blocks are distributed at the edge positions of the bottom block at equal intervals in the circumferential direction, the adjacent vertical blocks are mutually attached, the bottom ends of the vertical blocks are hinged with the bottom block, and the vertical blocks are arranged on the bottom block in a vertical rotating mode.
2. The magnetic material compression molding die of claim 1, wherein a through hole is formed in the bottom end of the slot, a push rod is arranged in the through hole in a sliding manner up and down, and the top end of the push rod is in threaded connection with the lower side surface of the inner die.
3. The magnetic material compression molding die of claim 1, wherein an elastic sheet for driving the vertical block to rotate and spread is arranged between the vertical block and the bottom block.
4. The magnetic material compression molding die of claim 1, wherein the slot comprises a vertical section and a flaring section, the vertical section is positioned at the bottom end of the slot, the inner side surface of the vertical section is mutually attached to the outer side surface of the internal die, the flaring section is positioned at the upper side of the vertical section, the flaring section is in a flaring shape which gradually expands upwards, and the inner side surface of the flaring section is arc-shaped.
5. The magnetic material compression molding die of claim 1, wherein the bottom end of the slot is provided with a plurality of equally spaced holes, and the vertical section of each hole is funnel-shaped.

Description

Magnetic material compression molding die Technical Field The utility model relates to the field of magnetic material production, in particular to a magnetic material compression molding die. Background In the field of production and processing of magnetic materials, press forming is one of the key process steps. After the magnetic material blank is pressed in the mold, a demolding operation is required. At the time of demolding, the blank is typically lifted upward to disengage the mold. However, the problem that the corners of the blank scratch the inner wall or other parts of the die in the jacking process is that the corners of the blank are easy to break, unfilled corners or crack when the blank is subjected to the scratching force of the die because the blank has a certain brittleness after being pressed. The damage phenomenon not only can influence the appearance quality of the blank, but also reduces the forming quality of the magnetic material blank, thereby causing the generation of defective products, increasing the production cost and reducing the production efficiency. Disclosure of utility model The utility model aims to provide a magnetic material compression molding die which enables a vertical block to be separated from a blank by rotating the vertical block, so that the blank is basically prevented from being scratched with the vertical block, the probability of damage to corners of the blank is reduced, and the appearance quality and molding quality of the blank are improved. The utility model solves the problems by adopting the following technical scheme: The utility model provides a magnetic material compression molding mould, includes external mold and centre form, the external mold on be provided with upper end open-ended slot, the centre form slides from top to bottom and sets up in the slot, the centre form is upper end open-ended hollow structure, the centre form includes bottom block and a plurality of perpendicular piece, a plurality of perpendicular pieces are circumference equidistant distribution in the border position of bottom block, adjacent perpendicular piece is laminated each other, the bottom of perpendicular piece is articulated with the bottom block to be connected, perpendicular piece rotates from top to bottom and sets up on the bottom block. In the above technical scheme, preferably, the bottom of slot be provided with the through-hole, the through-hole is interior to slide from top to bottom and is provided with the ejector pin, the top of ejector pin and the downside threaded connection of centre form. In the above technical solution, preferably, an elastic sheet for driving the vertical block to rotate and expand is disposed between the vertical block and the bottom block. In the above technical scheme, preferably, the slot include vertical section and flaring section, vertical section is located the bottom of slot and the medial surface of vertical section is laminated each other with the lateral surface of centre form, flaring section is located the upside of vertical section and flaring section is the flaring form that upwards enlarges gradually, the medial surface of flaring section is arc. In the above technical scheme, preferably, the bottom end of the slot is provided with a plurality of leakage holes at equal intervals circumferentially, and the vertical section of the leakage holes is funnel-shaped. Compared with the prior art, the utility model has the following advantages and effects: According to the utility model, the inner die is inserted into the slot of the outer die, the inner wall of the slot is abutted against the vertical blocks of the inner die, so that the vertical blocks are kept in a vertical state and the adjacent vertical blocks are mutually attached, powder is injected into the cavity of the inner die from the upper end opening of the inner die, then the powder is pressed and formed by using a press, finally the inner die is taken out from the slot, and the vertical blocks are rotated to enable the inner die to be unfolded, so that a formed blank can be taken away. Because the vertical block is separated from the blank when the blank is taken out from the internal mold, the blank basically cannot scratch the vertical block, so that the probability of damage to corners of the blank can be reduced, the appearance quality and the molding quality of the blank are improved, the yield is improved, the production cost is reduced, and the production efficiency is improved. Drawings Fig. 1 is a schematic cross-sectional view of a magnetic material press molding die according to an embodiment of the present utility model. Fig. 2 is an enlarged view of the connection position of the vertical block and the bottom block in fig. 1. Fig. 3 is a perspective view of the inner mold of fig. 1 in an expanded state. Wherein, external mold 1, slot 11, through-hole 12, vertical section 13, flaring section 14, leak orifice 15, internal mold 2, bottom block 21