A multi-cavity uniform distribution runner structure of an aluminum profile hot extrusion die
By introducing a multi-cavity uniform flow channel structure into the hot extrusion die of aluminum profiles, combined with air guide and air blocking components, heating is carried out directly inside the die, which solves the problem of long heating time of the heating ring, improves heat utilization efficiency and uniformity, and ensures uniform distribution and forming quality of aluminum profiles.
Patent Information
- Application Number
- CN202522489223.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-24
AI Technical Summary
Existing aluminum profile hot extrusion dies suffer from a problem of long heat exchange time during the heating process, leading to increased processing waiting time.
It adopts a multi-cavity uniform flow channel structure, including an upper mold assembly and a lower mold assembly, combined with an air guide assembly and an air blockage assembly, to directly heat inside the mold, changing the traditional heating ring heat conduction form and improving heat utilization efficiency and uniformity.
It significantly reduces heat loss, improves the uniformity of mold heating, shortens processing waiting time, ensures that aluminum profiles are evenly distributed into each cavity during extrusion, and reduces defects.
Smart Images
Figure CN224926763U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum profile hot extrusion die technology, specifically to a multi-cavity uniform flow channel structure for aluminum profile hot extrusion die. Background Technology
[0002] Hot extrusion dies for aluminum profiles are key tools used in the production process of aluminum profiles. They are used to extrude aluminum profiles of the required shape and size by placing aluminum billets into the die at high temperatures and using strong pressure to plastically deform the aluminum material in the cavity of the die. These dies are usually made of high-strength, high-wear-resistant alloy steel and can withstand high-temperature and high-pressure working environments. To ensure that the aluminum material is evenly distributed into each cavity during the extrusion process, the hot extrusion die for aluminum profiles is specially designed with a multi-cavity uniform flow channel structure. This structural design can effectively guarantee the consistency of the dimensions and surface quality of the extruded aluminum profiles, and reduce defects caused by uneven metal flow, such as dimensional deviations, surface scratches and internal cracks. In the hot extrusion forming process of aluminum profiles, the existing technology uses a heating ring to heat the die for hot extrusion of aluminum profiles to prevent deformation defects caused by temperature differences. However, the heat exchange between the heating ring and the die takes a certain amount of time, which increases the waiting time for hot extrusion processing of aluminum profiles. Therefore, in order to solve the above problems, a multi-cavity uniform flow channel structure for hot extrusion die of aluminum profiles is proposed. Utility Model Content
[0003] The purpose of this invention is to provide a multi-cavity uniform flow channel structure for hot extrusion dies of aluminum profiles, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: A multi-cavity uniform flow channel structure for hot extrusion die of aluminum profiles includes an upper die assembly and a lower die assembly. An air guide assembly is installed inside the lower die assembly, and an air-blocking assembly is fixedly connected to the inner side of the lower die assembly via screws. The lower die assembly includes a lower die body, with an insertion channel and a slot on its inner side. A cross block is fixedly connected to the inner side of the insertion channel on the lower die body, and a ventilation groove is formed near the outer periphery of the cross block. The air guide assembly includes an insert post, with a connecting nozzle fixedly connected to one end of the insert post, a guide block fixedly connected to the outer side of the insert post, and an arc-shaped block fixedly connected to the end of the insert post away from the connecting nozzle. A ventilation channel is formed inside the insert post.
[0005] As a further optimization of this utility model, the upper mold assembly includes an upper mold body, with multiple flow-diverting holes extending through the inner side of the upper mold body, a mold core fixedly connected to the bottom end of the upper mold body, and the bottom end of the upper mold body fitting against the top end of the lower mold body.
[0006] As a further optimization of this utility model, the following features are provided: a welding chamber is provided near the upper end of the lower mold body; a mold cavity is provided near the middle end of the lower mold body; a mold core is inserted into the mold cavity; a channel is provided between the mold cavity and the mold core; and the welding chamber is connected to the diversion hole.
[0007] As a further optimization of this utility model, the insert is slidably connected to the inner side of the insertion channel via a guide block, the arc-shaped block is inserted into the interior of the ventilation groove, and the end of the arc-shaped block near the mold cavity is flush with the inner wall of the mold cavity.
[0008] As a further optimization of this utility model, the following features are provided: a limiting ring is fixedly connected to the outer side of the insert post; an internally threaded cylinder is sleeved on the outer side of the insert post; the outer side of the limiting ring is rotatably connected to the inner side of the limiting groove; the limiting groove is opened on the inner side of the internally threaded cylinder; and a threaded groove is opened on the inner side of the internally threaded cylinder.
[0009] As a further optimization of this utility model, the internal threaded cylinder is threadedly connected to the external threaded cylinder through a threaded groove, and the external threaded cylinder is fixedly connected to the outside of the lower mold body.
[0010] As a further optimization of this utility model, an air-blocking component is inserted into the slot of the lower mold body. The air-blocking component is fixedly connected to the lower mold body by screws, and the air-blocking component is flush with the inner wall of the mold cavity.
[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, by setting up a lower mold assembly, an air guide assembly, and an air blocking assembly, the device directly applies heat to the inside of the mold, changing the traditional form of heat conduction by the heating ring, effectively reducing heat loss, improving heat utilization efficiency, and this heating method can significantly improve the uniformity of mold heating, thereby ensuring that the aluminum profile can be evenly distributed to each cavity during the extrusion process, effectively reducing defects caused by uneven metal flow. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the upper mold assembly structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the upper mold assembly of this utility model; Figure 4 This is a cross-sectional structural diagram of the lower mold assembly of this utility model; Figure 5 This is a schematic diagram of the lower mold body structure of this utility model; Figure 6 This is a cross-sectional structural diagram of the air guide component of this utility model; Figure 7 This utility model Figure 6 A schematic diagram of the structure at point A; Figure 8 This is a schematic diagram of the internal threaded cylinder structure of this utility model.
[0013] In the diagram: 1. Upper mold assembly; 11. Upper mold body; 12. Diversion hole; 13. Mold core; 2. Lower mold assembly; 21. Lower mold body; 22. Welding chamber; 23. Mold cavity; 24. Insertion channel; 25. Cross block; 26. Vent groove; 27. Slot; 28. External threaded cylinder; 3. Air guide assembly; 31. Internal threaded cylinder; 32. Limiting groove; 33. Threaded groove; 34. Limiting ring; 35. Insert post; 36. Connecting nozzle; 37. Guide block; 38. Arc block; 39. Ventilation duct; 4. Air-blocking assembly; 5. Screws. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0016] Please see Figures 1-8 This utility model provides a technical solution: A multi-cavity uniform flow channel structure for hot extrusion die of aluminum profile includes an upper die assembly 1 and a lower die assembly 2. An air guide assembly 3 is installed inside the lower die assembly 2. An air blocking assembly 4 is fixedly connected to the lower die assembly 2 inside the lower die assembly 2 by screws 5. The lower die assembly 2 includes a lower die body 21. An insertion channel 24 and a slot 27 are opened inside the lower die body 21. A cross block 25 is fixedly connected inside the insertion channel 24 of the lower die body 21. A ventilation groove 26 is opened near the outer edge of the cross block 25. The air guide assembly 3 includes an insertion post 35. A connecting nozzle 36 is fixedly connected to one end of the insertion post 35. A guide block 37 is fixedly connected to the outer side of the insertion post 35. An arc-shaped block 38 is fixedly connected to the end of the insertion post 35 away from the connecting nozzle 36. A ventilation channel 39 is opened inside the insertion post 35.
[0017] As a further implementation of this solution, the upper mold assembly 1 includes an upper mold body 11. Multiple diversion holes 12 are opened through the inner side of the upper mold body 11. A mold core 13 is fixedly connected to the bottom end of the upper mold body 11. The bottom end of the upper mold body 11 is attached to the top end of the lower mold body 21. Through the above arrangement, this structural design enables the aluminum rod to be evenly divided into several streams of metal through the multiple diversion holes 12 during the extrusion process, ensuring the initial uniform distribution of the metal stream and providing a foundation for the uniform forming of the aluminum profile in the future. As a further implementation of this solution, a welding chamber 22 is provided near the upper end of the lower mold body 21, and a mold cavity 23 is provided near the middle end of the lower mold body 21. A mold core 13 is inserted into the mold cavity 23, and a channel is provided between the mold cavity 23 and the mold core 13. The welding chamber 22 is connected to the diversion hole 12. Through the above configuration, this structural design allows the diverted metal flow to smoothly enter the welding chamber 22 and undergo solid welding under the action of high temperature and high hydrostatic pressure, forming an integral material centered on the mold core 13, thus creating conditions for the final forming of the aluminum profile. As a further implementation of this solution, the insert post 35 is slidably connected to the inside of the insertion channel 24 via the guide block 37, and the arc-shaped block 38 is inserted into the inside of the ventilation groove 26. The end of the arc-shaped block 38 near the mold cavity 23 is flush with the inner wall of the mold cavity 23. Through the above arrangement, this structural design allows the arc-shaped block 38 to be accurately inserted into the inside of the ventilation groove 26 and flush with the inner wall of the mold cavity 23, which can prevent it from overflowing from the inside of the ventilation groove 26 when extruding aluminum raw materials. As a further implementation of this solution, a limiting ring 34 is fixedly connected to the outside of the insert 35, and an internally threaded cylinder 31 is sleeved on the outside of the insert 35. The limiting ring 34 is rotatably connected to the inside of the limiting groove 32. The limiting groove 32 is opened on the inside of the internally threaded cylinder 31, and a threaded groove 33 is opened on the inside of the internally threaded cylinder 31. Through the above arrangement, this structural design enables flexible rotation and movement connection between the internally threaded cylinder 31, the limiting groove 32, the limiting ring 34 and the insert 35, so that the movement of the arc block 38 can be easily controlled during operation, realizing the opening and closing of the hot air channel, and improving the ease of operation of the device. As a further implementation of this solution, the internal threaded cylinder 31 is threadedly connected to the external threaded cylinder 28 through the threaded groove 33. The external threaded cylinder 28 is fixedly connected to the outside of the lower mold body 21. Through the above-mentioned arrangement, this threaded connection method enables the internal threaded cylinder 31 to be firmly fixed to the outside of the lower mold body 21, ensuring the stability of the device during the heating process. At the same time, the threaded connection also facilitates the installation and disassembly of the internal threaded cylinder 31, making it convenient to maintain and repair the device. As a further implementation of this solution, an air-blocking component 4 is inserted into the slot 27 of the lower mold body 21. The air-blocking component 4 is fixedly connected to the lower mold body 21 by screws 5. The air-blocking component 4 is flush with the inner wall of the mold cavity 23. Through the above-mentioned arrangement, this structural design allows the air-blocking component 4 to be accurately inserted into the slot 27 and flush with the inner wall of the mold cavity 23. This allows for better sealing of the lower end of the mold cavity 23 during the heating process, preventing hot air leakage and improving heating efficiency. At the same time, the fixed connection between the air-blocking component 4 and the lower mold body 21 also ensures the structural stability of the device.
[0018] Workflow: When heating the aluminum profile hot extrusion die, first insert the air-blocking component 4 into the slot 27 until it can no longer move out of the slot 27. At this point, the air-blocking component 4 is flush with the inner wall of the die cavity 23. Fix the air-blocking component 4 to the threaded hole pre-drilled at the front end of the lower die body 21 using screws 5. This seals the die cavity 23. When the inner threaded cylinder 31 is rotated, the threaded groove 33 on the inner side of the inner threaded cylinder 31 engages with the threaded part of the outer threaded cylinder 28. The inner threaded cylinder 31 moves away from the outer threaded cylinder 28. The inner threaded cylinder 31 is rotatably connected to the limiting ring 34 via the limiting groove 32. This movement of the inner threaded cylinder 31 drives the limiting ring 34, the insert 35, and the connecting nozzle 36 to move simultaneously. The insert 35 is slidably connected to the insertion channel 24 on the lower die body 21 via the guide block 37. This allows the arc-shaped block 38 to move away from the venting groove 26 until the arc-shaped part... After block 38 detaches from the venting groove 26, the air outlet pipe of the external hot air blower is fixed to the connecting nozzle 36 through the conduit. The hot air is then delivered to the interior of the venting channel 39 through the conduit and venting groove 26 by the heating blower. It is then blown into the interior of the die cavity 23 through the insertion channel 24 and the venting groove 26. Since the lower end of the die cavity 23 is blocked at this time, the hot air will be blown into the interior of the welding chamber 22 and the diversion hole 12 through the die cavity 23, thereby achieving the effect of heating the interior of the lower die body 21 and the interior of the upper die body 11. Since the venting groove 26 is distributed in multiple directions inside the lower die body 21, this can improve the uniformity of heating the upper die body 11 and the lower die body 21. At the same time, this heating method changes the traditional form of heat conduction through the heating ring, and can directly apply heat to the interior of the die, which not only reduces heat loss, but also improves the uniformity and efficiency of heating, thereby reducing the waiting time for hot extrusion processing of aluminum profiles. During the hot extrusion forming of aluminum profiles, the inner threaded cylinder 31 is threaded to the outside of the outer threaded cylinder 28, so that the end of the arc-shaped block 38 is flush with the inner wall of the die cavity 23. Then, the screw 5 is removed, and the air-blocking assembly 4 is moved out from the inside of the die cavity 23. At this time, the reserved screw hole on the side of the air-blocking assembly 4 is aligned with the through hole on the side of the lower die body 21, and the arc-shaped block 38 blocks the ventilation groove 26. The air-blocking assembly 4 is fixed to the lower die body 21 by the screw 5. At this time, the end of the air-blocking assembly 4 is flush with the inner wall of the die cavity 23. The design of the arc-shaped block 38 and the air-blocking assembly 4 being flush can prevent the aluminum raw material from overflowing during extrusion. After the aluminum rod is heated to about 450°C, The aluminum rod is fed into the extrusion cylinder of the extruder. During the extrusion process, the aluminum rod first passes through multiple diversion holes 12 and is divided into several metal streams by the diversion bridge between the diversion holes 12. The diversion holes 12 are the channels for the metal to reach the welding chamber 22, and the diversion bridges serve to support the die core 13. Since the area of each diversion hole 12 is the same, the length of the metal extruded from each diversion hole 12 is also the same, ensuring the initial uniform distribution of the metal stream. The diverted metal streams enter the welding chamber 22 and undergo solid welding under the action of high temperature and high hydrostatic pressure, forming a whole material centered on the die core 13. As the metal continues to accumulate, the static pressure continues to increase until the metal is extruded from inside the die cavity 23.
[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-cavity uniform flow channel structure for hot extrusion die of aluminum profile, comprising an upper die assembly (1) and a lower die assembly (2), characterized in that: An air guide assembly (3) is installed inside the lower mold assembly (2), and an air blockage assembly (4) is fixedly connected to the inside of the lower mold assembly (2) by screws (5). The lower mold assembly (2) includes a lower mold body (21). The lower mold body (21) has an insertion channel (24) and a slot (27) on its inner side. A cross block (25) is fixedly connected to the inner side of the insertion channel (24) of the lower mold body (21). A ventilation groove (26) is provided near the outer periphery of the cross block (25). The air guide assembly (3) includes a plug (35), one end of which is fixedly connected to a connecting nozzle (36), a guide block (37) is fixedly connected to the outside of the plug (35), an arc-shaped block (38) is fixedly connected to the end of the plug (35) away from the connecting nozzle (36), and an air passage (39) is opened on the inside of the plug (35).
2. The multi-cavity uniform flow channel structure of an aluminum profile hot extrusion die according to claim 1, characterized in that: The upper mold assembly (1) includes an upper mold body (11), with multiple diversion holes (12) through the inner side of the upper mold body (11), and a mold core (13) fixedly connected to the bottom end of the upper mold body (11). The bottom end of the upper mold body (11) is attached to the top end of the lower mold body (21).
3. The multi-cavity uniform flow channel structure of an aluminum profile hot extrusion die according to claim 1, characterized in that: The lower mold body (21) has a welding chamber (22) near the upper end and a mold cavity (23) near the middle. A mold core (13) is inserted into the mold cavity (23). A channel is provided between the mold cavity (23) and the mold core (13). The welding chamber (22) is connected to the diversion hole (12).
4. The multi-cavity uniform flow channel structure of an aluminum profile hot extrusion die according to claim 1, characterized in that: The insert (35) is slidably connected to the inside of the insertion channel (24) via the guide block (37), and the arc block (38) is inserted into the inside of the ventilation groove (26). The end of the arc block (38) near the mold cavity (23) is flush with the inner wall of the mold cavity (23).
5. The multi-cavity uniform flow channel structure of an aluminum profile hot extrusion die according to claim 1, characterized in that: The insertion post (35) is fixedly connected to a limiting ring (34) on the outside. An internal threaded cylinder (31) is sleeved on the outside of the insertion post (35). The limiting ring (34) is rotatably connected to the inside of a limiting groove (32). The limiting groove (32) is opened on the inside of the internal threaded cylinder (31). A threaded groove (33) is opened on the inside of the internal threaded cylinder (31).
6. The multi-cavity uniform flow channel structure of an aluminum profile hot extrusion die according to claim 5, characterized in that: The internal threaded cylinder (31) is threadedly connected to the external threaded cylinder (28) through the threaded groove (33), and the external threaded cylinder (28) is fixedly connected to the outside of the lower mold body (21).
7. The multi-cavity uniform flow channel structure of an aluminum profile hot extrusion die according to claim 1, characterized in that: An air-blocking component (4) is inserted into the slot (27) of the lower mold body (21). The air-blocking component (4) is fixedly connected to the lower mold body (21) by screws (5). The air-blocking component (4) is flush with the inner wall of the mold cavity (23).