Long and thin flat strip type aluminum profile hot extrusion die stable in forming

Abstract

The utility model discloses a long thin flat bar type aluminum profile hot extrusion die stable in forming, which comprises an upper die and a lower die arranged at the bottom of the upper die, a shunting bridge and shunting holes positioned on the left side and the right side of the shunting bridge are arranged in the upper die, and the bottoms of the sides, far away from the shunting bridge, of the two shunting holes are inclined back to the center of the upper die. And a straight platform section is arranged at the bottom of the shunting bridge and is used for maintaining the stability of the flow speed of the aluminum flow. According to the utility model, an aluminum flow is divided into two parts through the chamfered surface of the shunting bridge, the impact force of the aluminum flow is reduced, the aluminum flow can flow stably, the inclined surface is arranged to avoid insufficient long-edge feeding of a long thin flat strip type aluminum profile, and the straight table section enables the aluminum flow to be smoothly and stably filled into a cavity when the aluminum flow flows out of the discharge port, so that the aluminum flow is prevented from being blocked. And therefore, the stress of each part of the aluminum flow is uniform and stable, and the extrusion forming quality of the long and thin flat strip type aluminum profile is ensured.

Description

Technical Field

[0001] The utility model specifically relates to a hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming. Background Technique

[0002] The long, thin and flat strip-shaped aluminum profile is a metal material widely used in many industries such as aerospace, automobile manufacturing, and architectural decoration. It is usually made of aluminum alloy and has the advantages of light weight, corrosion resistance, good electrical and thermal conductivity, etc., and is favored by all walks of life. For such an aluminum profile with a large aspect ratio, an aluminum extrusion die with a large aspect ratio is required, that is, a hot extrusion die for long, thin and flat strip-shaped aluminum profiles for production;

[0003] At present, when the hot extrusion die for long, thin and flat strip-shaped aluminum profiles is actually used, due to the large aspect ratio and thin wall thickness of the long, thin and flat strip-shaped aluminum profile, it is very difficult for the aluminum flow to maintain smooth and uniform flow during the flow process, resulting in uneven force during the aluminum flow extrusion process, and the forming stability becomes poor, affecting the quality of its finished products.

[0004] Therefore, it is very necessary to invent a hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming to solve the above problems. Content of the Utility Model

[0005] (I) Purpose of the Utility Model

[0006] To solve the technical problems existing in the background technique, the utility model provides a hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming. Through the chamfered surface of the shunt bridge, the aluminum flow is divided into two parts, reducing the impact force of the aluminum flow and enabling the aluminum flow to flow smoothly. The setting of the inclined surface avoids insufficient feeding of the long side of the long, thin and flat strip-shaped aluminum profile, and the straight platform section enables the aluminum flow to fill the cavity smoothly and stably when flowing out of the discharge port, making the force on each part of the aluminum flow uniform and stable, and ensuring the extrusion forming quality of the long, thin and flat strip-shaped aluminum profile.

[0007] (II) Technical Solution

[0008] To achieve the above purpose, the utility model provides the following technical solution: A hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming, including an upper die and a lower die arranged at the bottom of the upper die. A shunt bridge and shunt holes located on the left and right sides of the shunt bridge are arranged inside the upper die. The bottom of the two shunt holes is inclined away from the center direction of the upper die on the side far from the shunt bridge, forming an inclined surface. A straight platform section is arranged at the bottom of the shunt bridge for maintaining the stable flow rate of the aluminum flow;

[0009] A welding chamber is opened at the top of the lower die, and a cavity connected to the welding chamber is opened inside the lower die. A discharge hole connected to the cavity is opened at the bottom of the lower die;

[0010] Among them, the vertical length of the cavity is set to 5 - 15 mm, which is used for the extrusion production of long, thin and flat strip aluminum profiles.

[0011] Preferably, the thickness of the upper die is set to 15 - 25 mm.

[0012] Preferably, a feed port is formed at the top of the flow splitting hole, and the horizontal length to the vertical width of the feed port is set to 2:1.

[0013] Preferably, the bottoms of the two flow splitting holes are connected and share a discharge port, and the distance between the left and right edges of the discharge port and the left and right edges of the cavity is at least 7.5 mm.

[0014] Preferably, a chamfered surface is provided at the top of the flow splitting bridge, the chamfered surface is set to a 20° rounded corner, and the longitudinal width of the flow splitting bridge is equal to the longitudinal width of the feed port of the flow splitting hole.

[0015] Preferably, the horizontal width of the straight platform section is not greater than 5 mm, and the vertical length of the straight platform section is set to 5 - 10 mm.

[0016] Preferably, the bottom periphery of the welding chamber is chamfered, and the depth of the welding chamber is not greater than 10 mm.

[0017] Compared with the prior art, the beneficial effects of the above technical solutions of the present utility model are as follows:

[0018] In the present utility model, a flow splitting bridge with a chamfered surface at the top divides the aluminum flow into two parts and guides them into the two flow splitting holes respectively. While reducing the impact of the aluminum flow, it enables the aluminum flow to flow smoothly. The setting of the inclined surface increases the storage capacity of the aluminum flow in the flow splitting holes to cope with the situation of insufficient feeding of the long side of the long, thin and flat strip aluminum profile. Combined with the design of the straight platform section, the aluminum flow can fill the cavity smoothly and stably at the discharge port, with uniform and stable stress everywhere. The vertical length of the cavity is set to 5 - 15 mm, so that the feeding of the aluminum flow inside the cavity is also sufficient, and the aluminum flow inside the cavity is precisely controlled, thus successfully completing the extrusion forming of the long, thin and flat strip aluminum profile, and ensuring the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2Half-sectional view of the present utility model;

[0022] Figure 3 Cross-sectional view of the upper die of the present utility model;

[0023] Figure 4 Cross-sectional view of the lower die of the present utility model;

[0024] Figure 5 Exploded view of the present utility model.

[0025] Explanation of reference numerals in the drawings:

[0026] 1 Upper die, 11 Dividing bridge, 12 Dividing holes, 13 Inclined surface, 14 Straight platform section, 15 Feeding port, 16 Discharging port, 17 Chamfered surface;

[0027] 2 Lower die, 21 Welding chamber, 22 Cavity, 23 Discharging holes. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the accompanying drawings.

[0029] The present utility model provides a Figures 1-5 kind of hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming as shown in the figure, including an upper die 1 and a lower die 2 arranged at the bottom of the upper die 1. A dividing bridge 11 and dividing holes 12 located on the left and right sides of the dividing bridge 11 are arranged inside the upper die 1. The bottom sides of the two dividing holes 12 far away from the dividing bridge 11 are inclined away from the center direction of the upper die 1 to form an inclined surface 13. A straight platform section 14 is arranged at the bottom of the dividing bridge 11 for maintaining the stable flow rate of the aluminum flow;

[0030] A welding chamber 21 is opened at the top of the lower die 2, and a cavity 22 communicating with the welding chamber 21 is opened inside the lower die 2. Discharging holes 23 communicating with the cavity 22 are opened at the bottom of the lower die 2;

[0031] Among them, the vertical length of the cavity 22 is set to 5 - 15 mm for the extrusion production of long, thin and flat strip-shaped aluminum profiles.

[0032] In one embodiment, the thickness of the upper die 1 is set to 15 - 25 mm, so that the aluminum flow has a relatively long flow space inside the upper die 1, can flow stably to the lower die 2, and ensure that the upper die 1 can continuously supply materials to the lower die 2.

[0033] In one embodiment, a feed port 15 is formed at the top of the shunt hole 12, and the transverse length to the longitudinal width of the feed port 15 is set to 2:1, such that the aluminum flow is sufficient and can be evenly distributed in the two shunt holes 12, ensuring the stability of the aluminum flow velocity. The bottoms of the two shunt holes 12 are connected and share a discharge port 16, and the distance between the left and right edges of the discharge port 16 and the left and right edges of the cavity 22 is at least 7.5 mm.

[0034] In one embodiment, a chamfered surface 17 is provided at the top of the shunt bridge 11. The chamfered surface 17 is set as a 20° rounded corner, and the longitudinal width of the shunt bridge 11 is equal to the longitudinal width of the feed port 15 of the shunt hole 12, which can effectively improve the impact force brought by the aluminum flow, such that the aluminum flow can be evenly distributed in the two shunt holes 12 and reduce the impact pressure on the upper die 1.

[0035] In one embodiment, the transverse width of the straight platform section 14 is not greater than 5 mm, and the vertical length of the straight platform section 14 is set to 5 - 10 mm, which can ensure that the aluminum flow is smooth and stable when flowing out of the shunt hole 12, greatly optimizing the discharge effect of the aluminum flow.

[0036] In one embodiment, the bottom periphery of the bonding chamber 21 is chamfered, such that the aluminum flow can still remain stable in the bonding chamber 21, and then flow into the cavity 22 smoothly and evenly to complete the extrusion production of the long, thin and flat aluminum profile. The depth of the bonding chamber 21 is not greater than 10 mm, which ensures the assembly accuracy of the lower die 2 and the precise control of the aluminum flow, such that the aluminum flow rate entering the cavity 22 is controlled.

[0037] The specific implementation method is as follows: When the present utility model is in use, the aluminum flow enters the interior of the upper die 1 through the feed port 15 at the top of the two shunt holes 12, and the shunt bridge 11 located in the middle can divide the aluminum flow into two parts, such that the aluminum flow is divided into two branches and flows into the shunt holes 12 respectively, thereby effectively guiding the aluminum flow, improving the impact of the aluminum flow on the upper die 1, that is, making the impact brought by the aluminum flow no longer concentrated and the pressure distribution more uniform;

[0038] The setting of the inclined surface 13 at the bottom of the shunt hole 12 can increase the storage capacity of the aluminum flow in the shunt hole 12 to cope with the long side of the long, thin and flat aluminum profile, such that when the aluminum flow supplies material to the cavity 22, it ensures that there is sufficient aluminum flow entering the interior of the cavity 22, avoiding poor forming quality of the long, thin and flat aluminum profile due to insufficient material supply in the cavity 22. At the same time, the transverse length to the longitudinal width of the feed port 15 is set to 2:1 and used in conjunction with the shunt bridge 11, such that the aluminum flow is sufficient and can be evenly distributed in the two shunt holes 12, ensuring the stability of the aluminum flow velocity;

[0039] Moreover, the distance between the left and right edges of the discharge ports 16 of the two shunt holes 12 and the left and right edges of the cavity 22 is at least 7.5 mm, so that the cross-sectional area of the discharge ports 16 is much larger than that of the cavity 22, allowing sufficient aluminum to flow into the cavity 22 for filling. This ensures again that the aluminum flow in the cavity 22 is sufficient. When the two aluminum flows flow out of the shunt holes 12, they can converge again. At this time, the design of the straight platform section 14 prevents strong collisions when the aluminum flows converge. The straight platform section 14 with a length of 5 - 10 mm ensures that the aluminum flow is smooth and stable when flowing out of the shunt holes 12, greatly optimizing the discharge effect of the aluminum flow. As a result, it is ensured that the aluminum flow can enter the interior of the cavity 22 evenly and smoothly. The vertical length of the cavity 22 is set to 5 - 15 mm, making the feeding of the aluminum flow inside the cavity 22 sufficient as well. This enables precise control of the aluminum flow inside the cavity 22, and the extrusion forming of the long, thin, and flat aluminum profile can be successfully completed. After the long, thin, and flat aluminum profile is formed, it can be directly discharged from the lower die 2 through the discharge hole 23 and then sent to the next process until the batch production of the long, thin, and flat aluminum profile is completed;

[0040] This embodiment specifically solves the problem in the prior art that when the hot extrusion die for long, thin, and flat aluminum profiles is actually used, due to the large aspect ratio and thin wall thickness of the long, thin, and flat aluminum profiles, it is very difficult for the aluminum flow to remain smooth and uniform during the flow process, resulting in uneven stress during the extrusion process of the aluminum flow and poor forming stability, which affects the quality of its finished products.

[0041] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming, characterized in that: It includes an upper die (1) and a lower die (2) arranged at the bottom of the upper die (1); A flow dividing bridge (11) and flow dividing holes (12) located on the left and right sides of the flow dividing bridge (11) are arranged inside the upper die (1). The bottom sides of the two flow dividing holes (12) far from the flow dividing bridge (11) are inclined towards the center direction of the upper die (1), forming an inclined surface (13). A straight platform section (14) is arranged at the bottom of the flow dividing bridge (11) for maintaining the stability of the aluminum flow velocity; A welding chamber (21) is formed at the top of the lower die (2), and a cavity (22) communicating with the welding chamber (21) is arranged inside the lower die (2). A discharge hole (23) communicating with the cavity (22) is arranged at the bottom of the lower die (2); Among them, the vertical length of the cavity (22) is set to 5 - 15 mm for the extrusion production of long, thin and flat strip-shaped aluminum profiles.

2. The hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable molding according to claim 1, wherein: The thickness of the upper die (1) is set to 15 - 25 mm.

3. A hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming, characterized in that: An inlet port (15) is formed at the top of the flow dividing hole (12), and the horizontal length and vertical width of the inlet port (15) are set to 2:

1.

4. A hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming, characterized in that: The bottoms of the two flow dividing holes (12) are connected and share a discharge port (16). The intervals between the left and right edges of the discharge port (16) and the left and right edges of the cavity (22) are at least 7.5 mm.

5. A hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming, characterized in that: A chamfered surface (17) is arranged at the top of the flow dividing bridge (11). The chamfered surface (17) is set as a 20° rounded corner, and the longitudinal width of the flow dividing bridge (11) is equal to the longitudinal width of the inlet port (15) of the flow dividing hole (12).

6. A hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming, characterized in that: The horizontal width of the straight platform section (14) is not greater than 5 mm, and the vertical length of the straight platform section (14) is set to 5 - 10 mm.

7. A hot extrusion die for long, thin and flat strip-shaped aluminum profiles with stable forming, characterized in that: The periphery of the bottom of the welding chamber (21) is chamfered, and the depth of the welding chamber (21) is not greater than 10 mm.

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