CN211191449U

CN211191449U - Large cantilever aluminum extrusion die

Info

Publication number: CN211191449U
Application number: CN201922223332.7U
Authority: CN
Inventors: 梁红强; 冯爱民
Original assignee: Suzhou Huatai Mould Manufacturing Co ltd
Current assignee: Suzhou Huatai Mould Manufacturing Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-08-07
Anticipated expiration: 2029-12-12

Abstract

The utility model discloses a big cantilever aluminium extrusion die, it includes water conservancy diversion mould (1) and section mould (2), be equipped with on water conservancy diversion mould (1) a plurality of with communicating reposition of redundant personnel hole (11) of section mould (2), be formed with water conservancy diversion bridge (15) between reposition of redundant personnel hole (11), section mould (2) are including seam room (21), the upward extrusion is equipped with choked flow block (23) in seam room (21), choked flow block (23) are located section bar (3) wall thickness great department, and the aluminium material by get into after diversion bridge (15) fall into a plurality of strands seam room (21) and shaping. The utility model discloses aluminium extrusion die adopts the design of reposition of redundant personnel hole bridging mode, has reduced the bullet of water conservancy diversion mould and has become to increase the life of section mould, improve mould stability, in addition, aluminium extrusion die is equipped with the choked flow piece in the great department of section wall thickness, and it is even to guarantee the velocity of flow through the choked flow piece formation feeding in grades, further improves the stability of mould.

Description

Large cantilever aluminum extrusion die

Technical Field

The utility model relates to an aluminium extrusion die technical field, in particular to big cantilever aluminium extrusion die.

Background

In the extrusion process of the traditional large cantilever section, the flow guide die is directly punched by an aluminum material, the stress of the die is large, the die is easy to deform and lay down, the wall thickness of a product is uneven, and qualified products cannot be produced; for the traditional diversion mold, as the diversion mold is not provided with the diversion bridge, the diversion span is large, the diversion mold is large in elastic deformation, the discharging molding is unstable, the thickness and the wall thickness are uneven in flow velocity, and the dimensional stability is poor. The deformation of water conservancy diversion will be superimposed on the section mould, makes the section bar appear the error in appearance after being extruded, and the section bar that appears the error needs the later stage to carry out the manual work and repaiies once more, increases the time of production, also can increase the waste of raw materials simultaneously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the above-mentioned defect among the prior art, provide a big cantilever aluminium extrusion die to solve big cantilever aluminium alloy because receive aluminium material direct impact to take place to crowd partially or collapse, and extrude the problem of the unbalanced flow rate of in-process section bar thickness department.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the utility model provides a big cantilever aluminum extrusion die, its includes water conservancy diversion mould and section mould, be equipped with on the water conservancy diversion mould a plurality of with the communicating reposition of redundant personnel hole of section mould, be formed with the water conservancy diversion bridge between the reposition of redundant personnel hole, the section mould includes the seam room, upwards the protrusion is equipped with the choked flow piece in the seam room, the choked flow piece is located the great department of section bar wall thickness, and the aluminium material by get into after the diversion bridge divides into a plurality of strands the seam room and shaping.

Furthermore, the utility model discloses still provide following subsidiary technical scheme: the section bar comprises a plurality of branch parts with larger wall thickness, and the choke blocks are arranged at the branch parts correspondingly in a plurality.

The shunting holes are correspondingly distributed along the shape of the section bar.

The section bar comprises two symmetrical cantilever parts and a non-cantilever part connected between the cantilever parts, the shunt hole comprises a first shunt hole, a second shunt hole, a third shunt hole, a fourth shunt hole and a fifth shunt hole, the first shunt hole is arranged at the non-cantilever part, the second shunt hole and the fourth shunt hole are symmetrically arranged on the two cantilever parts, and the third shunt hole and the fifth shunt hole are symmetrically arranged on the two cantilever parts.

The cross section of the flow blocking block is in a round corner rectangular structure.

An outward-expanding inclined plane is arranged in the shunting hole.

Compared with the prior art, the utility model has the advantages of: 1. the utility model adopts the design of a shunting hole bridging mode, reduces the elastic deformation of the flow guide die and prolongs the service life of the section die; the aluminum extrusion die is provided with a choke block at the position where the wall thickness of the forming die is larger, and the stability of discharging and forming of the die is ensured by forming graded feeding through the choke block;

2. the utility model discloses aluminium extrusion die divides the downthehole inclined plane that expands outward that is equipped with of flow, and the inclination that gets into the flow distribution hole can carry out the feed with the buffering form through the inclined plane to the control section bar is thick and thin the department velocity of flow even, favourable section bar shaping.

Drawings

Fig. 1 is a schematic structural view of the large cantilever aluminum extrusion die of the present invention.

Fig. 2 is a schematic plan view of the large cantilever aluminum extrusion die of the present invention.

Fig. 3 is a close-up view of the large cantilever aluminum extrusion die a of fig. 2.

Fig. 4 is the internal structure schematic diagram of the shunting hole of the large cantilever aluminum extrusion die of the utility model.

Fig. 5 is a schematic view of the extruded profile structure.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings.

As shown in fig. 1, the large cantilever aluminum extrusion die according to a preferred embodiment of the present application includes a guide die 1 and a forming die 2, wherein the guide die 1 and the forming die 2 are stacked front and back and are connected into a whole through a pin.

Referring to fig. 2, the diversion mold 1 is provided with a plurality of diversion holes 11, a diversion bridge 15 is formed between two adjacent diversion holes 11, the diversion holes 11 are material flow passages, and the aluminum material enters the mold 2 through the diversion holes 11. The shunting holes 11 are correspondingly paved and covered according to the shape of the section bar 3, in the embodiment, the shunting holes 11 are distributed in a U shape, so that the metal flow velocity of each part of the section bar 3 is basically balanced when the aluminum material flows in an extrusion mode. The number of the diversion holes 11 is preferably five, which are respectively a diversion hole one 11a, a diversion hole two 11b, a diversion hole three 11c, a diversion hole four 11d and a diversion hole five 11 e. As shown in fig. 5, the profile 3 includes two symmetrical cantilever portions 31 and a non-cantilever portion 32 connected between the cantilever portions 31, and the diversion hole one 11a is arranged at the non-cantilever portion 32; the second diversion holes 11b and the fourth diversion holes 11d are symmetrically arranged on the two cantilever parts 31 and are correspondingly consistent in size; the third diversion hole 11c and the fifth diversion hole 11e are symmetrically arranged on the two cantilever parts 31. And the sizes are correspondingly consistent. The cantilever part 31 and the non-cantilever part 32 are distributed with a plurality of branch parts 33 with larger wall thickness, and the first diversion hole 11a, the third diversion hole 11b and the fifth diversion hole 11e are correspondingly arranged at the branch parts 33. The cross section of the first shunting hole 11a is an isosceles trapezoid, the cross sections of the second shunting hole 11b and the fourth shunting hole 11d are right-angled trapezoids, the cross sections of the third shunting hole 11c and the fifth shunting hole 11e are isosceles triangles, and the corner positions of the shunting holes are in arc transition.

As shown in FIG. 4, the branch hole 11 includes a feeding hole 13, an outward-expanding inclined surface 14 is provided in the branch hole 11, and the aluminum entering the branch hole 11 through the feeding hole 13 can be fed in a buffering manner through the inclination of the inclined surface 14, so that the flow rate at the thick and thin parts of the section bar is controlled to be uniform, which is beneficial to the section bar forming.

The section mould 2 comprises a welding chamber 21 and a cavity 22, the aluminum material is divided into a plurality of strands by the diversion bridge 15 under the action of pressure, and then the strands are welded in the welding chamber 21 and enter the cavity 22, so that the impact force of the aluminum material on the section mould 2 is avoided, the deformation of the section mould 2 is reduced, and the service life of the section mould 2 is prolonged. Due to the adoption of the bridging mode of the diversion holes, the diversion bridge 15 can be used for buffering, so that the elastic deformation of the diversion die 1 can be reduced, the diversion span is reduced, the diversion deformation is small, the deformation of the diversion bridge superposed on the forming die 2 is small, the aluminum material is divided into a plurality of strands of aluminum materials from the original whole, the contact deformation of the aluminum materials is increased, and the flow velocity of the aluminum materials is more uniform.

The welding chamber 21 is provided with a flow blocking block 23 protruding upwards, as shown in fig. 3, the cross section of the welding chamber is of a round-corner rectangular structure and is located at a position where the wall thickness of the branch part 33 of the section bar 3 is large, so that the flow speed of the aluminum material at the position of the section bar 3 corresponding to the position can be adjusted in an auxiliary manner, the overall flow speed is uniform, and the stability of the discharge molding of the mold is ensured.

The utility model has the advantages that: 1. the utility model adopts the design of a shunting hole bridging mode, reduces the elastic deformation of the flow guide die and prolongs the service life of the section die;

2. the utility model has the advantages that the flow choking block is arranged at the position with larger wall thickness of the section bar, and the staged feeding is formed by the flow choking block to ensure the stability of the discharging molding of the die;

3. the utility model discloses aluminium extrusion die divides the downthehole inclined plane that expands outward that is equipped with of flow, and the inclination that gets into the flow distribution hole can carry out the feed with the buffering form through the inclined plane to the control section bar is thick and thin the department velocity of flow even, favourable section bar shaping.

It should be noted that the above-mentioned preferred embodiments are only for illustrating the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, and the protection scope of the present invention cannot be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a big cantilever aluminum extrusion die which characterized in that: it includes water conservancy diversion mould (1) and section mould (2), be equipped with on water conservancy diversion mould (1) a plurality of with communicating reposition of redundant personnel hole (11) of section mould (2), be formed with water conservancy diversion bridge (15) between reposition of redundant personnel hole (11), section mould (2) are including seam room (21), it is equipped with choked flow block (23) to go up the protrusion in seam room (21), choked flow block (23) are located section bar (3) wall thickness great department, and the aluminium material by get into after dividing into a plurality of strands water conservancy diversion bridge (15) seam room (21) and shaping.

2. The large cantilever aluminum extrusion die of claim 1, wherein: the section bar (3) comprises a plurality of branch parts (33) with larger wall thickness, and the flow blocking blocks (23) are arranged at the branch parts (33) correspondingly in a plurality.

3. The large cantilever aluminum extrusion die of claim 1, wherein: the shunting holes (11) are correspondingly distributed along the shape of the section bar (3).

4. The large cantilever aluminum extrusion die of claim 3, wherein: the section bar (3) comprises two symmetrical cantilever parts (31) and non-cantilever parts (32) connected between the cantilever parts (31), the diversion hole (11) comprises a diversion hole I (11a), a diversion hole II (11b), a diversion hole III (11c), a diversion hole IV (11d) and a diversion hole V (11e), the diversion hole I (11a) is arranged at the non-cantilever part (32), the diversion hole II (11b) and the diversion hole IV (11d) are symmetrically arranged on the two cantilever parts (31), and the diversion hole III (11c) and the diversion hole V (11e) are symmetrically arranged on the two cantilever parts (31).

5. The large cantilever aluminum extrusion die of claim 1, wherein: the section of the flow blocking block (23) is in a round corner rectangular structure.

6. The large cantilever aluminum extrusion die of claim 1, wherein: an outward-expanding inclined plane (14) is arranged in the shunting hole (11).