A combined extrusion die for aluminum alloy profiles

Abstract

This utility model discloses a combined extrusion die for aluminum alloy profiles, belonging to the field of aluminum alloy profile die technology. It includes an extrusion die and a forming tube. Fixed plates are fitted at both ends of the forming tube. Connecting ears are provided at the corners of the fixed plates and the extrusion die. Fins, flush with the edges of the fixed plates, are evenly spaced on the surface of the forming tube. Extrusion strips are provided on the inner wall of the forming tube. By evenly spaced fins on the outer side of the forming tube, the tube's strength is enhanced while the high temperature transmitted from the material to the forming tube is quickly dissipated outwards, causing the temperature of the material moving inside the forming tube to decrease accordingly. This gives the material a certain strength within the forming tube. Simultaneously, the extrusion die and forming tube form the material in two stages, allowing for segmented processing of the material. This distributes the pressure generated during processing, preventing the material from rapidly losing temperature and pressure after leaving the processing area, thus avoiding deformation.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy profile mold technology, and in particular to a combined extrusion mold for aluminum alloy profiles. Background Technology

[0002] Aluminum alloy profiles are metal materials with specific cross-sections produced through processes such as smelting and extrusion. They are usually made by mixing aluminum with different proportions of other metal materials according to specific usage requirements.

[0003] In the production process, the final shaping is done using an extrusion die. The molten raw material is continuously fed into the die. During the feeding process, the material is extruded into a specific shape in the die and then leaves the die. However, in actual use, the material is subjected to a large pressure after entering the die to be shaped. Especially in the initial stage of processing, the extrusion die and the material are kept at a high temperature to facilitate the shaping of the material. The finished material shaped under high pressure and high temperature will be twisted after leaving the die due to rapid cooling. As the finished material continues to be fed out, the material discharged from the extrusion die will deform during the cooling process, resulting in waste. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a combined extrusion die for aluminum alloy profiles, which solves the problem of the finished profiles becoming twisted and deformed due to rapid loss of pressure and cooling after leaving the die during processing.

[0005] The technical solution of this utility model is as follows: it includes an extrusion die with an internal flow channel and a forming tube. The inner hole shape of the forming tube matches the flow channel. Fixed plates are sleeved at both ends of the forming tube. Connecting ears are provided at the corners of the fixed plates and the extrusion die. Through holes for bolts are provided in the connecting ears. The extrusion die and the fixed plates are connected by bolts through the connecting ears. The end of the extrusion die is provided with grooves that are evenly distributed along the flow channel. The surface of the fixed plate is provided with protrusions that are adapted to the grooves. Fins that are flush with the edge of the fixed plate are evenly spaced on the surface of the forming tube. Extrusion strips are provided on the inner wall of the forming tube. The extrusion strips are continuously distributed along the axial direction and cover the entire length of the forming tube.

[0006] Furthermore, the two ends of the forming tube are flush with the fixing plate, and the forming tube is welded and fixed to the fixing plate to ensure that the two ends of the forming tube are normal, and the fixing plate on the outside of the two ends can strengthen the strength of the end of the forming tube and prevent the forming tube from deforming under pressure.

[0007] Furthermore, the fins on the surface of the forming tube form a reinforcing rib structure on the surface of the forming tube. While dissipating heat, the fins reinforce the structural strength of the forming tube and prevent the forming tube from deforming due to the pressure generated when the material passes through the forming tube.

[0008] Furthermore, the thickness of the connection between the fin and the forming tube is greater than that of the end, and there is no contact between any two fins. The fins are made of aluminum alloy material to ensure that the fins have sufficient heat dissipation effect and that adjacent fins do not affect each other.

[0009] Furthermore, the wall thickness of the formed tube is greater than the minimum inner diameter to ensure that the strength of the formed tube itself is sufficient to withstand the pressure carried by the material.

[0010] Furthermore, the height of the extrusion bar gradually increases from one side close to the extrusion die to the other side, reducing the resistance generated when the material comes into contact with the extrusion bar and reducing the pressure due to increased resistance.

[0011] Furthermore, after the fixed plate and the extrusion die are connected, the inner hole of the forming tube in the fixed plate is aligned with the flow channel of the extrusion die to ensure smooth material movement.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model first uses an extrusion die and a forming tube to form the material in two stages. The extrusion die roughly shapes the overall shape of the material. Then, the formed material enters the forming tube under the push of the subsequent material. Inside the forming tube, it contacts the extrusion bar. The extrusion bar squeezes out grooves on the surface of the formed material or completes the surface details. The segmented processing of the material can distribute the pressure generated during processing, thereby reducing the probability of the material bending due to the loss of pressure after leaving the processing stage.

[0014] 2. This utility model also provides fins evenly spaced on the outside of the forming tube. The fins strengthen the forming tube itself and dissipate the high temperature transferred from the material to the forming tube quickly. This causes the temperature of the material moving inside the forming tube to decrease accordingly, thus giving the material a certain strength inside the forming tube. This prevents the material from becoming too soft and deformed due to rapid cooling after leaving the processing tube. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the extrusion die structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the molding tube structure of this utility model.

[0019] Figure 5This is a schematic diagram showing the positions of the protrusions and grooves of this utility model.

[0020] Reference numerals: 1. Extrusion die; 2. Forming tube; 3. Fixing plate; 4. Connecting lug; 5. Groove; 6. Protrusion; 7. Fin; 8. Extrusion strip. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] like Figure 1-4 As shown, a combined extrusion die for aluminum alloy profiles includes an extrusion die 1 with an internal flow channel and a forming tube 2. The inner hole shape of the forming tube 2 matches the flow channel, and the wall thickness of the forming tube 2 is greater than the minimum inner hole diameter to ensure that the forming tube 2 itself has sufficient strength to withstand the pressure carried by the material. Fixing plates 3 are sleeved at both ends of the forming tube 2, and the two ends of the forming tube 2 are flush with the fixing plates 3. The forming tube 2 and the fixing plates 3 are welded and fixed to each other to ensure that the two ends of the forming tube 2 are normal, and the fixing plates 3 on the outer sides of the two ends can strengthen the strength of the ends of the forming tube 2 to prevent the forming tube 2 from deforming under pressure. Connecting ears 4 are provided at the corners of the fixing plates 3 and the extrusion die 1. The connecting ears 4 are provided with through holes for bolts. The extrusion die 1 and the fixing plates 3 are connected by bolts through the connecting ears 4. After the fixing plates 3 and the extrusion die 1 are connected, the inner hole of the forming tube 2 in the fixing plate 3 is aligned with the flow channel of the extrusion die 1 to ensure smooth material movement.

[0023] The extrusion die 1 has grooves 5 evenly distributed along the flow channel at its end. The surface of the fixing plate 3 has protrusions 6 that match the grooves 5. The surface of the forming tube 2 has fins 7 evenly spaced and flush with the edge of the fixing plate 3. The fins 7 on the surface of the forming tube 2 form a reinforcing rib structure. While dissipating heat, the fins 7 reinforce the structural strength of the forming tube 2, preventing deformation of the forming tube 2 due to the pressure generated when the material passes through it. The thickness of the connection between the fins 7 and the forming tube 2 is greater than that at the end. There is no contact between any two fins 7. The fins 7 are made of aluminum alloy to ensure sufficient heat dissipation and that adjacent fins 7 do not affect each other. The inner wall of the forming tube 2 is provided with extrusion strips 8. The extrusion strips 8 are continuously distributed along the axial direction and cover the entire length of the forming tube 2. The height of the extrusion strips 8 gradually increases from one side close to the extrusion die 1 to the other side, reducing the resistance generated when the material contacts the extrusion strips 8 and reducing the pressure caused by the increased resistance.

[0024] Working principle of this utility model:

[0025] First, the operator connects the extrusion die 1 to the discharge equipment. Then, the forming tube 2 is connected to the extrusion die 1 through the connecting lug 4 on the surface of the fixing plate 3. The discharge equipment sends the material to the extrusion die 1 and then it is extruded into the die 1 for forming. Under the action of the subsequent material, pressure is generated and it is pushed forward. During the movement, the profile enters the forming tube 2 and contacts the extrusion strip 8. The extrusion strip 8 extrudes textures on the surface of the profile or forms convex strips to improve the surface details of the profile. At the same time, the high temperature carried inside the profile is transferred to the forming tube 2. The fins 7 set on the surface of the forming tube 2 quickly absorb heat and dissipate it outward. The operator can place a fan or use other methods to accelerate the heat dissipation of the fins 7 to optimize the heat dissipation effect. When the profile in the forming tube 2 leaves the forming tube 2, the temperature drops significantly. At the same time, the pressure on the profile is dispersed. The pressure and temperature of the profile at this time are not enough to cause it to deform.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A combined extrusion die for an aluminium alloy profile, comprising an extrusion die (1) with a flow channel (3) in its interior, and a profiled tube (2), characterised in that: The inner hole shape of the forming tube (2) matches the flow channel. The two ends of the forming tube (2) are fitted with fixing plates (3). The corners of the fixing plates (3) and the extrusion mold (1) are provided with connecting ears (4). The connecting ears (4) are provided with through holes for setting bolts. The extrusion mold (1) and the fixing plates (3) are connected by bolts through the connecting ears (4). The end of the extrusion mold (1) is provided with grooves (5) that are evenly distributed along the flow channel. The surface of the fixing plate (3) is provided with protrusions (6) that are adapted to the grooves (5). The surface of the forming tube (2) is provided with fins (7) that are flush with the edge of the fixing plate (3) at even intervals. The inner wall of the forming tube (2) is provided with extrusion strips (8). The extrusion strips (8) are continuously distributed along the axial direction and cover the entire length of the forming tube (2).

2. A modular extrusion die for an aluminum alloy profile according to claim 1, characterized in that: The two ends of the forming tube (2) are flush with the fixing plate (3), and the forming tube (2) and the fixing plate (3) are welded and fixed together.

3. The combined extrusion die for aluminum alloy profiles according to claim 1, characterized in that: The fins (7) on the surface of the molded tube (2) form a reinforcing rib structure on the surface of the molded tube (2).

4. The combined extrusion die for aluminum alloy profiles according to claim 1, characterized in that: The thickness of the connection between the fin (7) and the forming tube (2) is greater than that of the end. There is no contact between any two fins (7). The fins (7) are made of aluminum alloy.

5. The combined extrusion die for aluminum alloy profiles according to claim 4, characterized in that: The wall thickness of the formed tube (2) is greater than the minimum inner diameter.

6. The combined extrusion die for aluminum alloy profiles according to claim 1, characterized in that: The height of the extrusion bar (8) gradually increases from one side near the extrusion die (1) to the other side.

7. The combined extrusion die for aluminum alloy profiles according to claim 1, characterized in that: After the fixed plate (3) and the extrusion mold (1) are connected, the inner hole of the forming tube (2) in the fixed plate (3) is aligned with the flow channel of the extrusion mold (1).

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