CN-224208821-U - Novel special pad for extrusion nitrogen cooling

CN224208821UCN 224208821 UCN224208821 UCN 224208821UCN-224208821-U

Abstract

The utility model belongs to the technical field of special pads for molds, and particularly relates to a novel special pad for extruding nitrogen, which comprises a special pad body for molds, wherein two sides of the special pad body are respectively provided with a first cooling area and a second cooling area, a liquid nitrogen channel communicated with the first cooling area and the second cooling area is arranged in the special pad body for molds, a nitrogen supply pipe communicated with the liquid nitrogen channel is further arranged outside the special pad body for grinding tools, the inner diameter of the nitrogen supply pipe is equal to the inner diameter of the liquid nitrogen channel, an annular channel used for diffusing liquid nitrogen is arranged outside the liquid nitrogen channel, a plurality of notches used for the liquid nitrogen channel are arranged between the annular channel and the liquid nitrogen channel, and the liquid nitrogen is directly led to the upper cooling area and the lower cooling area through adding the liquid nitrogen channel communicated with the first cooling area and the second cooling area, so that the upper cooling area and the lower cooling area have consistent liquid nitrogen throughput is ensured, and the uniform cooling effect of the upper cooling area and the lower cooling area is ensured.

Inventors

HE KAIHONG
TAN HUAQUAN
TIAN SHIYOU
ZHANG ZIQIANG
XU LIANG
LIANG LONGJIE
Liang Shaozhou
TAN LI

Assignees

重庆铝王铝业有限公司

Dates

Publication Date: 20260508
Application Date: 20250610

Claims (7)

1. The novel extrusion nitrogen cooling special pad is characterized by comprising a special die pad body (2) with a first cooling area (13) and a second cooling area (14) on two sides, wherein a liquid nitrogen channel (5) communicated with the first cooling area (13) and the second cooling area (14) is arranged in the special die pad body (2), and a nitrogen supply pipe (6) communicated with the liquid nitrogen channel (5) is further arranged outside the special grinding tool pad body.
2. The novel extrusion nitrogen cooling special pad according to claim 1, wherein the inner diameter of the nitrogen supply pipe (6) is equal to the inner diameter of the liquid nitrogen channel (5).
3. The novel extrusion nitrogen cooling special pad according to claim 1, wherein an annular channel (12) for liquid nitrogen diffusion is arranged outside the liquid nitrogen channel (5), a plurality of notches for liquid nitrogen to pass through are arranged between the annular channel (12) and the liquid nitrogen channel (5), the notches are synchronous from an equipment axis to two sides and are respectively a first notch (10) and a second notch (11), and the size of the first notch (10) is smaller than that of the second notch (11).
4. The novel extrusion nitrogen cooling special pad according to claim 3, wherein one end, close to the nitrogen supply pipe (6), of the annular channel (12) is further provided with a water channel spine (7), the water channel spine (7) divides part of the annular channel (12) into a first liquid nitrogen groove (8) and a second liquid nitrogen groove (9) from inside to outside, and the inner diameter of the first liquid nitrogen groove (8) is larger than the inner diameter of the second liquid nitrogen groove (9).
5. The novel extrusion nitrogen cooling special pad according to claim 4, wherein a nitrogen inlet (1) communicated with a second liquid nitrogen tank (9) is formed in the side face of the die special pad body (2), and one end of the nitrogen supply pipe (6) is detachably arranged in the nitrogen inlet (1).
6. The novel extrusion nitrogen cooling special pad according to claim 1, wherein the first cooling area (13) and the second cooling area (14) are respectively provided with a cooling channel (3), the cooling channels (3) are arranged outside the liquid nitrogen channel (5), and a plurality of connecting water channels (4) for communication are arranged between the liquid nitrogen channel (5) and the cooling channels (3).
7. A novel extrusion nitrogen cooling special pad as claimed in claim 1, wherein the first cooling area (13) and the second cooling area (14) are flat surfaces.

Description

Novel special pad for extrusion nitrogen cooling Technical Field The utility model belongs to the technical field of special pads for molds, and particularly relates to a novel special pad for nitrogen cooling by extrusion. Background The special pad for extrusion nitrogen cooling is a special pad for a die with a special structure, and the principle is that the die is cooled by liquid nitrogen in the extrusion process, so that the temperature of a deformation area is reduced, the surface quality of aluminum alloy during extrusion is improved, and the extrusion speed is improved. At present, a great deal of unreasonable parts exist in the aspect of liquid nitrogen connecting pipelines and channel arrangement of a nitrogen cooling pad, so that liquid nitrogen is unreasonable in distribution of all parts, even leakage and blockage of the liquid nitrogen occur, and the use effect of the liquid nitrogen is greatly influenced. Disclosure of utility model The utility model aims to provide a novel special pad for extrusion nitrogen cooling, which is used for solving the problems in the background technology. The special pad comprises a special pad body with a first cooling area and a second cooling area on two sides, wherein a liquid nitrogen channel communicated with the first cooling area and the second cooling area is arranged in the special pad body, and a nitrogen supply pipe communicated with the liquid nitrogen channel is further arranged outside the special pad body. Preferably, the inner diameter of the nitrogen supply pipe is equal to the inner diameter of the liquid nitrogen channel. Preferably, the outside of liquid nitrogen passageway is equipped with the ring channel that is used for liquid nitrogen to diffuse, be equipped with a plurality of notches that are used for liquid nitrogen to pass through between ring channel and the liquid nitrogen passageway, a plurality of notches are first notch and second notch respectively in proper order to both sides by the synchronization of equipment axle center department, the size of first notch is less than the size of second notch. Preferably, one end of the annular channel, which is close to the nitrogen supply pipe, is further provided with a water channel spine, the water channel spine divides part of the annular channel into a first liquid nitrogen tank and a second liquid nitrogen tank from inside to outside, and the inner diameter of the first liquid nitrogen tank is larger than that of the second liquid nitrogen tank. Preferably, a nitrogen inlet communicated with the second liquid nitrogen tank is formed in the side face of the special pad body of the die, and one end of the nitrogen supply pipe is detachably arranged in the nitrogen inlet. Preferably, the first cooling area and the second cooling area are respectively provided with a cooling channel, the cooling channels are arranged outside the liquid nitrogen channel, and a plurality of connecting water channels for communication are arranged between the liquid nitrogen channel and the cooling channels. Preferably, the first cooling area and the second cooling area are both flat surfaces. Compared with the prior art, the utility model has the following beneficial effects: (1) According to the utility model, the liquid nitrogen channel communicated with the first cooling area and the second cooling area is additionally arranged, so that the liquid nitrogen directly reaches the upper cooling area and the lower cooling area, the upper cooling area and the lower cooling area are ensured to have consistent liquid nitrogen throughput, and further the consistent cooling effect of the upper cooling area and the lower cooling area is ensured. (2) According to the utility model, the liquid nitrogen passage and the nitrogen supply pipe with the same inner diameter are additionally arranged, so that the liquid nitrogen throughput of the pipeline is kept consistent, and the situation that the liquid nitrogen is blocked and leaked at the connecting part is ensured. (3) According to the utility model, the plurality of notches with different sizes are additionally arranged, and the uniform cooling strength of each part is further ensured by adjusting the width of the liquid nitrogen notch at different parts, so that the working temperature of the die is effectively reduced, the surface quality of the profile is effectively ensured, and the extrusion speed is improved. Drawings FIG. 1 is a perspective view of the present utility model; FIG. 2 is a first cross-sectional view of the present utility model; FIG. 3 is a second cross-sectional view of the present utility model; In the figure, 1, a nitrogen inlet; 2, a special pad body for a mould, 3, a cooling channel, 4, a connecting water channel, 5, a liquid nitrogen channel, 6, a nitrogen supply pipe, 7, a water channel backbone, 8, a first liquid nitrogen tank, 9, a second liquid nitrogen tank, 10, a first notch, 11, a second notch, 12, an annular channel, 13, a fir