CN209773090U

CN209773090U - Aluminum profile hot extrusion die

Info

Publication number: CN209773090U
Application number: CN201822274186.6U
Authority: CN
Inventors: 何乐梅
Original assignee: JIANGSHUN MOULDS CO Ltd JIANGYIN
Current assignee: Jiangsu Jiangshun Precision Technology Group Co.,Ltd.
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2019-12-13
Anticipated expiration: 2028-12-29

Abstract

The utility model discloses an aluminium alloy hot extrusion die. The die body comprises a main guide flow pit formed on the die surface, a die cavity which is concave in the main guide flow pit and used for aluminum product forming, and a local guide flow pit matched with the main guide flow pit, wherein the guide plate is fixedly arranged on the die body through a fastener, so that the sink bridge is opposite to the main guide flow pit to form a hot extrusion die main body. After adopting foretell structure, its structural design is reasonable, has controlled the velocity of flow of aluminum alloy effectively, can solve the angle phenomenon of stepping on well and thin wall department during the extrusion and fill not enough and produce shrink problem and size tolerance phenomenon.

Description

Aluminum profile hot extrusion die

Technical Field

The utility model relates to an auto-parts hot extrusion die, specifically speaking are aluminium alloy hot extrusion die.

background

Aluminum extruded products are also used in various fields because of the superiority of products and the increasing perfection of aluminum extrusion technology. In an approximately L-shaped aluminum profile (as shown in figure 1) in an automobile part, it can be seen from the figure that the wall thickness difference of the profile is greatly different and the wall thickness ratio is more than 10 times, the thinnest wall thickness is only 0.8mm, and parts which are difficult to fill exist, and in addition, the requirement on the dimensional tolerance is very strict, however, the special section structure causes the problems of size reduction, uneven pedal angle and plane and the like caused by the flow rate problem in the extrusion process, the required dimensional tolerance is difficult to achieve, the profile extruded by the existing die has major defects and low product qualification rate, and no good solution is provided in the prior art.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a can guarantee that the metal flow is balanced, guarantee the plane degree, also can reach the aluminium alloy hot extrusion die that section bar dimensional tolerance required simultaneously.

In order to solve the technical problem, the utility model discloses a hot extrusion die of aluminium alloy, including the die body and with the guide plate of die body cooperation installation, be provided with the water conservancy diversion bridge on the guide plate, be located the heavy bridge that water conservancy diversion hole and water conservancy diversion bridge and water conservancy diversion hole rear end face around the water conservancy diversion bridge formed, the die body includes the leading water conservancy diversion hole that forms on the die face, the indent be used for the fashioned die cavity of aluminum product and with leading water conservancy diversion hole and die cavity complex local water conservancy diversion hole in leading water conservancy diversion hole, thereby the guide plate makes heavy bridge and leading water conservancy diversion hole form hot extrusion die main part relatively through the fixed arrangement of fastener on the die body.

The water conservancy diversion hole is provided with a plurality ofly, and wherein at least one water conservancy diversion hole sets up and is difficult to the corresponding position of filling position as the reposition of redundant personnel hole in with the aluminum product, the reposition of redundant personnel hole lets out the position of thick wall in the aluminum product.

the local diversion pits are arranged at the positions of the thin walls in the sectional materials.

The cavity is preset with a pre-shrinkage position and a deformation position.

The pre-shrinking position is reserved at the top bending position and the edge position of the bending tail end of the section bar.

The deformation position is reserved at the rod part position of the section bar.

After the structure is adopted, because the independent shunting holes are arranged at the positions corresponding to the parts which are difficult to fill in the aluminum material, the parts which are difficult to discharge are firstly discharged, sufficient feeding is ensured, the shunting holes are not shared with the thick walls of the aluminum material, material distribution is avoided, local diversion pits are designed in the diversion pits at the thin walls which are difficult to fill, and sufficient welding space is ensured.

Drawings

FIG. 1 is an assembly view of the aluminum profile hot extrusion die of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a structural diagram of a flow guide plate of the present invention;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a structural diagram of the middle mold body of the present invention;

FIG. 6 is a cross-sectional view of FIG. 5;

fig. 7 is a structural diagram of the cooperation of the middle cavity and the section bar.

Detailed Description

The aluminum profile hot extrusion die of the present invention will be described in detail with reference to the accompanying drawings and the following detailed description.

as shown in the figure, the aluminum profile hot extrusion die of the utility model comprises a die body 1 and a guide plate 2 which is installed in a matching way with the die body, a guide bridge 3, guide holes 4 which are arranged around the guide bridge and a sinking bridge 5 which is formed by the guide bridge and the rear end face of the guide hole are arranged on the guide plate 2, a plurality of guide holes 4 are arranged, one of the guide holes is arranged at the position corresponding to the part which is difficult to fill in the aluminum profile, the guide hole is used as a diversion hole 10, namely, a diversion hole feeding is independently designed at the part which is difficult to fill, the feeding is sufficient, the diversion hole 10 allows the position of the thick wall in the aluminum profile to be opened, the die body 1 comprises a main guide pit 6 which is formed on the die surface, a die cavity 8 which is concave in the main guide pit and is used for forming the aluminum profile 7 and a local guide pit 9 which is matched with the main guide pit 6 and the die cavity 8, the local guide pit 9 is arranged at the, make its seam space sufficient, thereby guide plate 2 makes heavy bridge 5 and leading flow pit 6 relative formation hot extrusion die main part through the fixed arrangement of fastener on die body 1, and as can be seen from the figure, guide plate 2 and die body 1 belong to combination assembly (tight fit), and both superpose each other, from preceding to back be guide plate, die body in proper order, and the centre is assembled (tight fit) with two screws and two pins to form whole aluminium alloy hot extrusion die's main part.

Furthermore, a pre-shrinking amount position 11 and a deformation amount position 12 are preset in the cavity 8, the pre-shrinking amount position 11 is reserved at the top bending position and the edge position of the bending tail end of the section bar, the deformation amount position 12 is reserved at the rod part position of the section bar, the pre-shrinking amount and the deformation amount of the cavity are increased, and the size tolerance of the section bar is effectively guaranteed.

Claims

1. The utility model provides an aluminium alloy hot extrusion die which characterized in that: the die body comprises a die body (1) and a guide plate (2) installed in a matched mode with the die body, wherein a guide bridge (3), a guide hole (4) located around the guide bridge and a sinking bridge (5) formed by the guide bridge and the rear end face of the guide hole are arranged on the guide plate (2), the die body (1) comprises a main guide pit (6) formed on a die surface, a cavity (8) which is concave in the main guide pit and used for forming an aluminum material (7) and a local guide pit (9) matched with the main guide pit (6) and the cavity (8), and the guide plate (2) is fixedly arranged on the die body (1) through a fastener so that the sinking bridge (5) is opposite to the main guide pit (6) to form a hot extrusion die main body.

2. The aluminum profile hot extrusion die as set forth in claim 1, wherein: the water conservancy diversion hole (4) are provided with a plurality ofly, and wherein at least one water conservancy diversion hole sets up and is difficult to the corresponding position in filling position as reposition of redundant personnel hole (10) in with the aluminum product, reposition of redundant personnel hole (10) give way the position of thick wall in the aluminum product.

3. The aluminum profile hot extrusion die as set forth in claim 1 or 2, wherein: the local flow guiding pits (9) are arranged at the positions of the thin walls in the section.

4. The aluminum profile hot extrusion die as claimed in claim 3, characterized in that: the cavity (8) is preset with a pre-shrinkage position (11) and a deformation position (12).

5. the aluminum profile hot extrusion die as claimed in claim 4, wherein: the pre-shrinking position (11) is reserved at the edge position of the bending position and the bending tail end of the top of the section.

6. The aluminum profile hot extrusion die as set forth in claim 4 or 5, wherein: the deformation position (12) is reserved at the rod position of the section bar.