CN215879294U

CN215879294U - Aluminum flat tube extrusion die structure

Info

Publication number: CN215879294U
Application number: CN202120576769.3U
Authority: CN
Inventors: 吴徳军; 王胜青; 范付军; 徐勇华; 徐登友; 刘丽
Original assignee: Nanjing Yunhai Special Metals Co ltd
Current assignee: Nanjing Yunhai Aluminum Industry Co ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2022-02-22
Anticipated expiration: 2031-03-22

Abstract

The utility model discloses an aluminum flat tube extrusion die structure which comprises an upper die part, a lower diaphragm, a die core and positioning pins, wherein the upper die part comprises an upper part and a lower part, a concave hole penetrating through the upper surface and the lower surface of the upper die part is formed in the center of the upper die part, the die core is installed in the concave hole, first positioning holes are symmetrically formed in the positions, located on the periphery of the concave hole, of the lower surface of the lower part of the upper die part, the lower diaphragm is installed below the lower part, second positioning holes are formed in the positions, aligned with the first positioning holes in the vertical direction, of the lower diaphragm, and the positioning pins are installed in the first positioning holes and the second positioning holes. The utility model reduces the material consumption of the die core and the lower die sheet at the easy-to-wear part of the die, thereby reducing the manufacturing cost of the die, simultaneously ensuring that the assembly is easier and more convenient and being more beneficial to improving the processing precision.

Description

Aluminum flat tube extrusion die structure

The technical field is as follows:

the utility model relates to an aluminum flat tube extrusion die structure, and belongs to the technical field of aluminum flat tube production.

Background art:

with the rapid development of the aluminum extrusion industry, the product quality requirement on the aluminum flat tube is higher and higher, and higher quality requirements are provided for the manufacturing and application of an extrusion die. But because the temperature of flat aluminum pipe in the extrusion moulding stage is very high, the pipe wall is very thin, high temperature adds gravity reason, often can cause the flat aluminum pipe of extruding to take place deformation, reduces the product precision, and because extrusion die's discharge gate receives stress very big in the extrusion process, extrusion die is impaired seriously often short-lived, and manufacturing cost is high, and the die assembly is too deep because of the lower mould working tape apart from the surface simultaneously, consequently need go up the lower mould and process respectively, finished product equipment back has the precision error.

Therefore, there is a need to improve the prior art to overcome the deficiencies of the prior art.

The utility model has the following contents:

the utility model provides an aluminum flat tube extrusion die structure for solving the problems in the prior art, which can save the manufacturing materials of the extrusion die, reduce the cost and improve the manufacturing precision of the die.

The technical scheme adopted by the utility model is as follows: the utility model provides an aluminum flat tube extrusion die structure, includes mould part, lower diaphragm, mold core and locating pin, it includes upper portion and lower part to go up the mould part the central point of going up the mould part puts the shrinkage pool that is formed with the upper and lower surface that runs through the mould part, and the mold core is installed in the shrinkage pool go up the lower part lower surface of mould part and be located shrinkage pool symmetry all around and be provided with first locating hole, the diaphragm is installed in the below of lower part down, and the position of aliging about mutually with first locating hole is provided with the second locating hole on the diaphragm down, the locating pin is installed in first locating hole and second locating hole.

Further, the lower diaphragm is made of steel with the thickness of 20-30 mm.

The utility model has the following beneficial effects:

(1) the used materials of the die core and the lower die sheet of the die are reduced at the easy-to-wear part of the die, so that the manufacturing cost of the die is reduced;

(2) the lower diaphragm is made of steel with the thickness of 20-30mm, so that the assembly can be easier and more convenient;

(3) the depth of the idle cutter of the working belt from the lower surface is reduced, and the idle cutter can be directly processed after being assembled with the upper die, so that the processing precision is improved.

Description of the drawings:

fig. 1 is a schematic view of an upper die part in the aluminum flat tube extrusion die structure.

The specific implementation mode is as follows:

the utility model will be further described with reference to the accompanying drawings.

The aluminum flat tube extrusion die structure comprises an upper die part 1, a lower membrane, a die core 3 and a positioning pin, wherein the upper die part 1 comprises an upper part 10 and a lower part 11, a concave hole 13 penetrating through the upper surface and the lower surface of the upper die part 1 is formed in the center of the upper die part 1, and the die core 3 is arranged in the concave hole 13.

First positioning holes 14 are symmetrically formed in the lower surface of the lower portion 11 of the upper die portion 1 at positions around the concave hole 13.

The lower diaphragm is mounted below the lower part 11, a second positioning hole is provided in the lower diaphragm at a position vertically aligned with the first positioning hole 14, and the upper die portion 1 and the lower diaphragm are mounted and fixed together by mounting a positioning pin in the first positioning hole 14 and the second positioning hole.

According to the aluminum flat tube extrusion die structure, firstly, the concave hole of the upper die part is heated and expanded in a heating mode, then the die core is placed into the concave hole from top to bottom, and along with the reduction of temperature, the concave hole of the upper die part is shrunk due to cold shrinkage, so that the die core is clamped and fixed in the concave hole. The utility model realizes the connection between the upper die part and the die core by utilizing the principle of metal expansion with heat and contraction with cold, and the lower die sheet and the upper die part can be connected and fixed by the positioning pin to form a complete die structure.

The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the utility model and these modifications should also be considered as the protection scope of the utility model.

Claims

1. The utility model provides an aluminum flat tube extrusion die structure which characterized in that: including last mould part (1), lower diaphragm, mold core (3) and locating pin, it includes upper portion (10) and lower part (11) to go up mould part (1) central point puts shrinkage pool (13) that is formed with the upper and lower surface that runs through mould part (1), and mold core (3) are installed in shrinkage pool (13) go up on the lower part (11) lower surface of mould part (1) and be located shrinkage pool (13) symmetry all around and be provided with first locating hole (14), the diaphragm is installed in the below of lower part (11) down, and the position of aliging about mutually with first locating hole (14) is provided with the second locating hole on the diaphragm down, the locating pin is installed in first locating hole (14) and second locating hole.

2. The aluminum flat tube extrusion die structure of claim 1, wherein: the lower diaphragm is made of steel with the thickness of 20-30 mm.