CN210966418U

CN210966418U - Extrusion die for bridge-cut-off hollow aluminum profile

Info

Publication number: CN210966418U
Application number: CN201921744814.0U
Authority: CN
Inventors: 余屹; 韩洪
Original assignee: Daye Yifeng Machinery Manufacturing Co ltd
Current assignee: Daye Yifeng Machinery Manufacturing Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-07-10
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses an extrusion die for hollow aluminium alloy of bridge cut-off, including last mould, lower mould, locating pin and connecting screw, wherein the locating pin is used for the positioning of last lower mould, and connecting screw is used for linking together last lower mould, upward be equipped with reposition of redundant personnel hole, reposition of redundant personnel bridge and mold core on the mould, be equipped with seam room, nib, working tape and dead knife on the lower mould, the working tape is the vertical cantilever of a pair of connection on nib lateral wall top, the mold core forms with the mid portion in close contact with of nib upper end wall and seals, and this closure adopts conical surface structural design, and its and the contained angle α value between the central axis be 16.

Description

Extrusion die for bridge-cut-off hollow aluminum profile

Technical Field

The utility model relates to the technical field of mold, more specifically say, especially, relate to an extrusion die for hollow aluminium alloy of bridge cut-off.

Background

The aluminum profile industry in China is greatly developed from the middle of the 80 th of the 20 th century, the market demand is gradually expanded from the initial aluminum alloy doors and windows to large-scale curtain walls, furniture profiles, bathroom products and the like, and the profile sections are also from small to large and from simple to complex. For the bridge-cut-off hollow aluminum profile, the section structure is complex, the forming difficulty is high, the existing traditional extrusion die is adopted for production and manufacturing, the demolding speed is low, the efficiency is low, the die damage degree is high, the service life is short, and the production requirement is difficult to meet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to above-mentioned prior art not enough, provide an extrusion die for hollow aluminium alloy of bridge cut-off that demolding is fast, production efficiency is high, long service life.

In order to achieve the purpose, the technical scheme of the utility model is that the extrusion die for the bridge cut-off hollow aluminum profile comprises an upper die, a lower die, a positioning pin and a connecting screw, wherein the positioning pin is used for assembling and positioning the upper die and the lower die, the connecting screw is used for connecting the upper die and the lower die together, the upper die is provided with a shunting hole, a shunting bridge and a die core, the lower die is provided with a welding chamber, a die hole, a working band and a blank cutter, the working band is a pair of vertical cantilevers connected to the top end of the outer side wall of the die hole, the die core is in close contact with the middle part of the upper end wall surface of the die hole to form a seal, the seal adopts a conical surface structure design, and the.

Adopt the utility model discloses extrusion die produces, can extrude the hollow aluminium alloy of bridge cut-off of appearance exquisite, and demolding is fast, production efficiency is high, and the mould can not receive the damage or the damage degree is minimum in process of production moreover, long service life.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is a schematic front structural view of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

In the figure: 1-upper mould; 11-a shunt hole; 12-a shunt bridge; 13-a mold core; 14-enclosure; 2-lower mould; 21-a welding chamber; 22-die holes; 23-a working band; 24-blank cutter; 3-positioning pins; 4-connecting screws.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.

As shown in fig. 1, the utility model provides an extrusion die for hollow aluminum profile of bridge cut-off, including upper die 1, lower die 2, locating pin 3 and connecting screw 4, wherein locating pin 3 is used for the positioning of the assembly of upper and lower mould, connecting screw 4 is used for linking upper and lower mould together, be equipped with diffluence orifice 11, diffluence bridge 12 and mold core 13 on the said upper die 1, diffluence orifice 11 is the passageway that the metal leads to the type hole, diffluence bridge 12 is the support that supports mold core 13, mold core 13 is used for forming shape and size of section bar inner chamber; the lower die 2 is provided with a welding chamber 21, a die hole 22, a working belt 23 and a blank cutter 24, the welding chamber 21 collects metal flowing out from the shunting hole 11 and welds the metal together again to form an integral material taking the die core 13 as the center, the static pressure is increased continuously due to continuous collection of the metal until the metal is extruded out of the die hole 22, the working belt 23 is used for determining the external size and shape of the section bar and adjusting the flow rate of the metal, and the blank cutter 24 is used for reducing friction, so that a product can pass smoothly and the surface quality is ensured.

In the embodiment shown in fig. 2, the working band 23 is a pair of vertical cantilevers connected to the top end of the outer sidewall of the die hole 22, the die core 13 is tightly contacted with the middle part of the upper end wall of the die hole 22 to form a closed part (shown as a part a in the figure), and the closed part 14 is designed in a conical structure, and an included angle α between the closed part and the central axis is 16 degrees, as shown in fig. 3.

In the production process, the aluminum material is divided into a plurality of strands of aluminum streams through the shunting holes 11 of the upper die 1 under the action of an extruder, then the aluminum streams are collected in the welding chamber 21 of the lower die 2 and are welded again under the condition of high temperature and high pressure, and finally the aluminum streams are formed through the gap between the die core 13 and the die hole 22 and the working belt 23, so that the hollow aluminum profile with the fine appearance and the broken bridge structure is extruded from the empty knife 24, the die stripping speed is high, and the production efficiency is high.

Claims

1. An extrusion die for a bridge-cut-off hollow aluminum profile comprises an upper die, a lower die, a positioning pin and a connecting screw, wherein the positioning pin is used for assembling and positioning the upper die and the lower die, and the connecting screw is used for connecting the upper die and the lower die together.