Optimized structure of aluminum alloy extrusion die
By increasing the feed inlet, decreasing the discharge outlet, and designing a multi-stage welding chamber structure, the problem of insufficient pressure in the welding chamber of aluminum alloy extrusion dies was solved, improving welding quality and yield, and resulting in smoother aluminum alloy products.
Patent Information
- Application Number
- CN202420800919.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The welding chamber pressure of traditional aluminum alloy extrusion dies is insufficient, resulting in unstable welding quality and low yield. Existing improvement methods have failed to completely solve this problem.
By increasing the inlet size and decreasing the outlet size, a multi-stage welding chamber structure is designed, including the first, second and third welding chambers. The structure adopts boss type and frustum type, and a flow divider bridge is set in the welding chamber to increase the welding chamber pressure and optimize the flowability of aluminum alloy materials.
It improves the welding quality and yield of aluminum alloy products, resulting in aluminum alloy products with smoother surfaces and more precise shapes.
Smart Images
Figure CN223811414U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an aluminium alloy extrusion die weld joint optimization structure. BACKGROUND
[0002] The aluminium alloy extrusion die is important equipment in the aluminium alloy forming process.
[0003] The traditional die structure is usually small in feeding and large in discharging or the feeding port and the discharging port are the same size, which helps to reduce the upper die pressure, improve the die life, can also spread the aluminium bar and make products larger than the aluminium bar, so the structure is also the most widely used, but the structure can cause insufficient weld chamber pressure and unstable weld quality.
[0004] Therefore, it is necessary to develop an aluminium alloy extrusion die for improving the weld quality of aluminium alloy products. SUMMARY
[0005] The utility model discloses a kind of aluminium alloy extrusion die optimization structures, by increasing feeding port size, reduce discharging port size, increase weld chamber pressure, to improve the weld quality of aluminium alloy products, improve yield.
[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an aluminium alloy extrusion die optimization structure, characterized by comprising die holder, feeding port, weld chamber and discharging port; the weld chamber is arranged in the die holder; the feeding port is arranged at one end of the weld chamber, and the discharging port is arranged at the other end; the feeding port size is greater than the discharging port size.
[0007] The extrusion die core is located in the weld chamber and extends out of the discharging port at one end.
[0008] The weld chamber is in the form of a boss structure.
[0009] The shunt bridge is located in the weld chamber; one end of the shunt bridge is connected to the inner wall of the weld chamber, and the other end is connected to the extrusion die core.
[0010] The die hole is located below the discharging port and between the extrusion die core and the die holder.
[0011] In the above technical scheme, the weld chamber includes a first weld chamber, a second weld chamber and a third weld chamber; the first weld chamber, the second weld chamber and the third weld chamber are connected in order from top to bottom.
[0012] The first welding chamber and the third welding chamber are in cylindrical structure, and the inner diameter of the first welding chamber is larger than that of the third welding chamber.
[0013] The second welding chamber is in a truncated cone structure with a large upper bottom and a small lower bottom.
[0014] One end of the shunt bridge is connected with the first welding chamber, and the other end is connected with the extrusion die core.
[0015] The second welding chamber and the third welding chamber are both located below the shunt bridge.
[0016] In the above technical solution, the straight slope angle of the second welding chamber is 45°.
[0017] In the above technical solution, the connection part of the second welding chamber with the first welding chamber and the third welding chamber is provided with a smooth fillet structure.
[0018] The utility model has the advantages of:
[0019] The utility model discloses a structure of an aluminum alloy extrusion die, which comprises a die holder, a feeding port, a welding chamber, an extrusion die core and a discharging port. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a traditional aluminum alloy extrusion die structure schematic diagram.
[0021] Figure 2 It is a traditional aluminum alloy extrusion die structure metal flow schematic diagram.
[0022] Figure 3 It is an aluminum alloy extrusion die structure schematic diagram of the utility model.
[0023] Figure 4 It is an aluminum alloy extrusion die structure metal flow schematic diagram of the utility model.
[0024] Figure 2 、 Figure 4 The arrow in the figure indicates the flow direction of the aluminum alloy material.
[0025] In the figure, 1 is a die holder, 2 is a feeding port, 3 is a welding chamber, 3.1 is a first welding chamber, 3.2 is a second welding chamber, 3.3 is a third welding chamber, 4 is a discharging port, 5 is an extrusion die core, and 6 is a die hole. DETAILED DESCRIPTION
[0026] The embodiments of the present application will be described in detail below with reference to the drawings, but they do not constitute limitations to the present application, and are only examples. Meanwhile, the advantages of the present application are made more clear and easy to understand through the description.
[0027] As shown in the drawings, the aluminum alloy extrusion die structure comprises a die base 1, a feeding port 2, a welding chamber 3 and a discharging port 4; the welding chamber 3 is arranged in the die base 1; the welding chamber 3 is provided with the feeding port 2 at one end and the discharging port 4 at the other end; the size of the feeding port 2 is larger than that of the discharging port 4 (as shown in Figure 3 、 Figure 4 illustrated), the present application increases the welding chamber pressure through the structure of large feeding and small discharging, thereby improving the welding quality of the die, so that a large pressure is formed in the die of the present application, the welding quality is improved, and the yield is improved;
[0028] The extrusion die core 5 is located in the welding chamber 3 and extends out of the discharging port 4 at one end;
[0029] The welding chamber 3 is in a boss type structure, which ensures that the pressure of the feeding port is as large as possible to be close to the die hole, and then the aluminum alloy blank is dispersed to the bridge bottom of the shunt bridge through the slope of the welding chamber 3, so as to increase the pressure per unit area of the welding chamber, thereby improving the bridge bottom pressure and improving the welding quality;
[0030] The shunt bridge is located in the welding chamber 3; one end of the shunt bridge is connected with the inner wall of the welding chamber 3, and the other end is connected with the extrusion die core 5; compared with the prior art, the present application reduces the span of the shunt bridge, maintains the balance of the die, and improves the strength of the die;
[0031] The die hole 6 is located below the discharging port 4 and between the extrusion die core 5 and the die base 1 (as shown in Figure 3 ).
[0032] Further, the welding chamber 3 comprises a first welding chamber 3.1, a second welding chamber 3.2 and a third welding chamber 3.3; the first welding chamber 3.1, the second welding chamber 3.2 and the third welding chamber 3.3 are connected in sequence from top to bottom;
[0033] The first welding chamber 3.1 and the third welding chamber 3.3 are both in a cylindrical structure, and the inner diameter of the first welding chamber 3.1 is larger than that of the third welding chamber 3.3;
[0034] The second welding chamber 3.2 is in a truncated cone type structure with a large upper bottom and a small lower bottom (as shown in Figure 3 ), the aluminum alloy blank is dispersed to the bridge bottom of the shunt bridge through the slope of the second welding chamber 3.2, so as to increase the pressure of the welding chamber, thereby increasing the hydrostatic pressure of the bridge bottom of the shunt bridge, making the welding chamber pressure larger than the discharging port pressure, and improving the welding quality of the aluminum alloy product;
[0035] This utility model provides an inward section (i.e., the second welding chamber 3.2) at the feed inlet 2. The inward section increases the pressure per unit area of the welding chamber.
[0036] One end of the diversion bridge is connected to the first welding chamber 3.1, and the other end is connected to the extrusion die core 5;
[0037] The second welding chamber 3.2 and the third welding chamber 3.3 are both located below the shunt bridge (e.g. Figure 3 , Figure 4 (As shown).
[0038] Furthermore, the slope angle of the straight platform in the second welding chamber 3.2 is 45°, but it can also be set to other slope angles according to the actual situation. The slope angle is preferably set to 45°. If the angle is too large, it will generate a reverse force with the feeding pressure, resulting in a large pressure loss. If the angle is too small, the feeding pressure will be continuously lost for a long time. When the slope angle is 45°, the feeding pressure is transmitted to the vicinity of the die hole to the maximum extent. Then, through the above-mentioned improved structure of this utility model, the pressure per unit area is further increased, thereby improving the welding quality of aluminum alloy products.
[0039] Furthermore, the connections between the second welding chamber 3.2 and the first welding chamber 3.1 and the third welding chamber 3.3 are all provided with smooth rounded corner structures (such as...). Figure 3 As shown in the figure, it improves the fluidity of the material, making the surface of the extruded aluminum alloy product smoother and the shape more precise.
[0040] This invention is only applicable to products with relatively small profile dimensions (less than 1 / 2 the diameter of the aluminum rod); larger products lack sufficient welding space. Specifically, such as... Figure 4 As shown, this invention features a 10mm boss structure at the mold outlet (comprising the first welding chamber 3.1, the second welding chamber 3.2, and the third welding chamber 3.3) to ensure that the pressure entering the feed inlet is as high as possible and close to the mold hole. The aluminum alloy blank is then dispersed to the bottom of the flow divider bridge via the slope of welding chamber 3. The greater the pressure in welding chamber 3, the greater the hydrostatic pressure at the bottom of the bridge (for example, in the traditional method, 10 units of pressure, after deducting the reverse resistance of the flow divider bridge, the frictional resistance of the outer wall of the flow divider hole, the resistance of the inner wall of the flow divider hole, and the frictional resistance between the aluminum metals, leaves 6 units of pressure transmitted to the welding chamber; if the welding chamber has 6 unit areas, it is equivalent to 1 unit of pressure per unit area). This improved structure reduces the size of the welding chamber, consuming the same amount of pressure, resulting in more pressure per unit area, thus increasing the pressure at the bottom of the bridge and improving the welding quality. Simultaneously, to maintain the mold's balance, the span of the flow divider bridge can be appropriately reduced, thereby increasing the mold's strength.
[0041] All other unspecified parts belong to the prior art.
Claims
1. An optimized structure for an aluminum alloy extrusion die, characterized in that: It includes a mold base (1), a feed inlet (2), a welding chamber (3), and a discharge outlet (4); the welding chamber (3) is provided inside the mold base (1); the feed inlet (2) is provided at one end of the welding chamber (3), and the discharge outlet (4) is provided at the other end; the size of the feed inlet (2) is larger than the size of the discharge outlet (4); The extrusion die core (5) is located inside the welding chamber (3) and one end extends out of the discharge port (4); The welding chamber (3) has a boss-shaped structure; The diversion bridge is located inside the welding chamber (3); one end of the diversion bridge is connected to the inner wall of the welding chamber (3), and the other end is connected to the extrusion die core (5); The die hole (6) is located below the discharge port (4) and between the extrusion die core (5) and the die base (1); The welding chamber (3) includes a first welding chamber (3.1), a second welding chamber (3.2), and a third welding chamber (3.3); the first welding chamber (3.1), the second welding chamber (3.2), and the third welding chamber (3.3) are connected sequentially from top to bottom; the first welding chamber (3.1) and the third welding chamber (3.3) are both cylindrical structures, and the inner diameter of the first welding chamber (3.1) is larger than the inner diameter of the third welding chamber (3.3); the second welding chamber (3.2) is a frustum-shaped structure with a large upper base and a small lower base. The aluminum alloy blank is dispersed to the bottom of the diversion bridge through the slope of the second welding chamber (3.2), increasing the pressure per unit area of the welding chamber; the second welding chamber (3.2) and the third welding chamber (3.3) are both located below the diversion bridge.
2. The optimized structure of the aluminum alloy extrusion die according to claim 1, characterized in that: One end of the diversion bridge is connected to the first welding chamber (3.1), and the other end is connected to the extrusion die core (5).
3. The optimized structure of the aluminum alloy extrusion die according to claim 2, characterized in that: The slope angle of the vertical platform in the second welding chamber (3.2) is 45°.
4. The optimized structure of the aluminum alloy extrusion die according to claim 2, characterized in that: The connection between the second welding chamber (3.2) and the first welding chamber (3.1) and the third welding chamber (3.3) is provided with a smooth rounded corner structure.