CN215845252U

CN215845252U - Heating back extrusion forming die in magnesium-aluminum alloy notebook computer die

Info

Publication number: CN215845252U
Application number: CN202121574342.6U
Authority: CN
Inventors: 肖明良
Original assignee: Suzhou Chunqiu Electronic Technology Co ltd
Current assignee: Suzhou Chunqiu Electronic Technology Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-02-18
Anticipated expiration: 2031-07-12

Abstract

The utility model belongs to the technical field of die pressing, and relates to a heating and back-extrusion forming die in a magnesium-aluminum alloy notebook computer die, which comprises an upper die and a lower die, wherein the upper die comprises an upper die plate and an upper die core embedded in the middle of the upper die plate, the lower die comprises a lower die plate, a lower die core arranged in the middle of the lower die plate in a floating mode, and a plurality of lower die inserts arranged around the lower die core, and auxiliary heating devices are arranged in the upper die core and the lower die core. The utility model can preheat the upper and lower die cores in advance before die assembly by using the auxiliary heating device, and completes heating and stamping back extrusion simultaneously, thereby avoiding the back extrusion molding of materials without preheating or reaching ideal molding temperature, reducing the wrinkling, cracks and structural fracture of the side wall of a product, and ensuring the structural precision and dimensional stability.

Description

Heating back extrusion forming die in magnesium-aluminum alloy notebook computer die

Technical Field

The utility model relates to the technical field of die pressing, in particular to a heating and back-extruding forming die in a magnesium-aluminum alloy notebook computer die.

Background

The 3C products have complicated structures and are light and thin, and the requirements on product forming are higher and higher. The front surface of the product is a sharp angle or has a small R angle. The common cold stamping forming process comprises the following steps: and (4) placing the semi-finished product in an oven for baking and heating, and then placing the semi-finished product in a mould for back extrusion molding after heating. The process has the problems that the processing efficiency is low, the product stability is poor, and the product structure and the size are difficult to guarantee. The shaping additionally increases equipment and manpower, and increases production cost.

For this reason, a new shaping mold has been developed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a heating and back-extruding forming die in a magnesium-aluminum alloy notebook computer die, which can enable a product to directly reach a required size.

The utility model realizes the purpose through the following technical scheme: the utility model provides a heating back extrusion forming die in magnadure notebook computer mould, includes mould and lower mould, it includes the cope match-plate pattern and inlays and locate to go up the mould the upper die benevolence at cope match-plate pattern middle part, the lower mould include the lower bolster, float set up in the lower mould benevolence at lower bolster middle part and center on a plurality of lower moulds that lower die benevolence set up are inserted, go up the mould benevolence with all be equipped with auxiliary heating device in the lower mould benevolence.

Specifically, the auxiliary heating device comprises a plurality of heating pipes which are arranged in parallel to the upper mold core or the lower mold core cavity surface.

Further, the distances between the adjacent heating pipes are equal.

Specifically, the lower die plate is internally provided with a chute for guiding the lower die insert, and the lower die insert approaches the lower die core during die assembly.

The technical scheme of the utility model has the beneficial effects that:

the utility model can preheat the upper and lower die cores in advance before die assembly by using the auxiliary heating device, and completes heating and stamping back extrusion simultaneously, thereby avoiding the back extrusion molding of materials without preheating or reaching ideal molding temperature, reducing the wrinkling, cracks and structural fracture of the side wall of a product, and ensuring the structural precision and dimensional stability.

Drawings

FIG. 1 is a schematic view of a mold for heating and extruding a notebook computer made of magnesium-aluminum alloy in a mold according to an embodiment;

FIG. 2 is a view showing the closing state of the upper and lower cores;

fig. 3 is a perspective view of the core part of the lower mold.

The figures in the drawings represent:

1-upper die, 11-upper template, 12-upper die core;

2-lower die, 21-lower die plate, 211-inclined groove, 22-lower die core, 23 a-lower die insert (front), 23 b-lower die insert (left) and 23 c-lower die insert (right);

3-auxiliary heating device, 31-heating tube;

4-products.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

Example (b):

as shown in fig. 1 to 3, the mold for heating and re-extruding in the mold of the magnesium-aluminum alloy notebook computer comprises an upper mold 1 and a lower mold 2, wherein the upper mold 1 comprises an upper mold plate 11 and an upper mold core 12 embedded in the middle of the upper mold plate 11, the lower mold 2 comprises a lower mold plate 21, a lower mold core 22 arranged in the middle of the lower mold plate 21 in a floating manner, and a plurality of

lower mold inserts

23a, 23b and 23c arranged around the lower mold core 22, and auxiliary heating devices 3 are arranged in the upper mold core 12 and the lower mold core 22. According to the utility model, the auxiliary heating device 3 can be used for preheating the upper mold core 12 and the lower mold core 22 in advance before mold closing, the surface of the product 4 can be directly heated after mold closing, and meanwhile, the

lower mold inserts

23a, 23b and 23c are used for back extrusion, so that the situation that the material is not preheated or does not reach an ideal forming temperature for back extrusion forming is avoided, the side wall wrinkling, the cracks and the structural fracture of the product 4 are reduced, and the structural precision and the dimensional stability are ensured.

As shown in fig. 1 and 2, the auxiliary heating device 3 includes a plurality of heating pipes 31 disposed parallel to the cavity surface of the upper mold core 12 or the lower mold core 22. The heating pipe 31 is used as a heating source, and the upper mold core 12 and the lower mold core 22 are uniformly heated by uniformly distributing the heating pipe in the upper mold core 12 and the lower mold core 22, so that the heating temperature on the surface of the product is uniform, and the sizes of the product at each position cannot be shrunk unevenly due to too large temperature difference.

As shown in fig. 1, the distances between the adjacent heating pipes 31 are equal. So that the temperatures of the upper and

lower cores

12 and 22 can be more uniform.

As shown in fig. 1 and 3, the lower platen 21 is provided with inclined grooves 211 for guiding the

lower mold inserts

23a, 23b, and 23c, so that the lower mold inserts 23a, 23b, and 23c approach the lower core 22 during mold closing. When the dies are closed, the upper die plate 21 presses the

lower die inserts

23a, 23b and 23c to descend, but the inclined grooves 211 guide the

lower die inserts

23a, 23b and 23c to approach the lower die core 22, so that the edge of the product 4 is clamped, and then the back extrusion operation is completed.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a heating back extrusion forming die in magnadure notebook computer mould, includes mould and lower mould, it includes the cope match-plate pattern and inlays and locate to go up the mould the upper die benevolence in cope match-plate pattern middle part, the lower mould include the lower bolster, float set up in the lower mould benevolence at lower bolster middle part and center on a plurality of lower moulds that lower die benevolence set up insert its characterized in that: and auxiliary heating devices are arranged in the upper die core and the lower die core.

2. The mold for heating and back-extruding a magnesium-aluminum alloy notebook computer in mold according to claim 1, wherein: the auxiliary heating device comprises a plurality of heating pipes which are arranged in parallel to the upper mold core or the lower mold core cavity surface.

3. The mold for heating and back-extruding a magnesium-aluminum alloy notebook computer in mold according to claim 2, wherein: the distances between the adjacent heating pipes are equal.

4. The mold for heating and back-extruding a magnesium-aluminum alloy notebook computer in mold according to claim 1, wherein: the lower die plate is internally provided with a chute for guiding the lower die insert, and the lower die insert approaches the lower die core during die assembly.