Isothermal gradient extrusion die for aluminum alloy sections

Abstract

The utility model discloses an isothermal gradient extrusion die for an aluminum alloy profile, which comprises an extrusion die assembly, and the extrusion die assembly comprises an extrusion cylinder, an extrusion rod, an extrusion pad, a die shell and a die core, an extrusion cavity is formed in the extrusion cylinder, the extrusion rod is fixedly connected with the extrusion pad, and the extrusion pad is arranged in the extrusion cavity in a matched mode. The extrusion cylinder is fixedly connected with the mold shell through a bolt, the mold shell comprises a first mold shell and a second mold shell, a clamping cavity is formed between the first mold shell and the second mold shell, the mold core is clamped in the clamping cavity, and the mold core is provided with a forming cavity communicated with an extrusion cavity; the first mold shell and the second mold shell are connected through a locking mechanism; the mold core can be replaced, so that profiles with different specifications can be produced and manufactured; the positioning blocks are clamped between the inner positioning holes and the outer positioning holes, the first mold shell and the second mold shell are locked and fixed, and stability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum alloy profile processing, and particularly relates to an isothermal gradient extrusion die for aluminum alloy profiles. Background Technique

[0002] Aluminum alloy profiles are materials for manufacturing aluminum alloy products such as industrial equipment frames, door and window frames, and radiators, and are widely used. Generally, they are formed by extrusion. By extruding an aluminum alloy blank heated to a certain temperature through a die, the required shape is formed. This method can produce various complex shapes and sizes.

[0003] Considering that the temperature at the inlet and outlet of the profile will change during extrusion, an isothermal gradient extrusion die is currently designed. Before extrusion, different temperature controls are performed on the uniformly heated blank to achieve a gradient distribution of the blank temperature along the length and realize isothermal extrusion.

[0004] However, in the above die, since the die core and the die shell are generally integrally designed, it is very inconvenient to replace the die when manufacturing profiles of different specifications; and when a small number of die cores and die shells are separately designed, the separate dies are generally fixed by bolts, and it is difficult to ensure the stability of the connection between the separate dies. Content of the Utility Model

[0005] The utility model provides an isothermal gradient extrusion die for aluminum alloy profiles, which can replace the die core, thereby manufacturing profiles of different specifications; the positioning block is clamped between the inner positioning hole and the outer positioning hole to lock and fix the first die shell and the second die shell, with high stability, so as to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: an isothermal gradient extrusion die for aluminum alloy profiles, including an extrusion die assembly, the extrusion die assembly includes an extrusion cylinder, an extrusion rod, an extrusion pad, a die shell and a die core; an extrusion cavity is arranged in the extrusion cylinder, the extrusion rod is fixedly connected with the extrusion pad, and the extrusion pad is sleeved in the extrusion cavity in a matching manner; the extrusion cylinder is fixedly connected with the die shell through bolts, the die shell includes a first die shell and a second die shell, a clamping cavity is arranged between the first die shell and the second die shell, the die core is clamped in the clamping cavity, and the die core is provided with a forming cavity communicated with the extrusion cavity; the first die shell and the second die shell are connected through a locking mechanism.

[0007] Preferably, a docking groove is arranged at the connection between the second die shell and the first die shell, and the first die shell is provided with a docking head matched with it.

[0008] Preferably, two groups of the locking mechanisms are arranged oppositely.

[0009] Preferably, the locking mechanism includes an inner positioning hole formed on the first die shell. A positioning spring and a positioning block are arranged in the inner positioning hole. An outer positioning hole corresponding to the inner positioning hole is formed on the second die shell. The positioning block is clamped between the inner positioning hole and the outer positioning hole under the extrusion of the positioning spring.

[0010] Preferably, a small hole communicating with the outer positioning hole is formed on the second die shell.

[0011] Preferably, a gradient temperature control area is arranged outside the extrusion cylinder. The gradient temperature control area includes multiple groups of cooling pipes.

[0012] Preferably, the outer wall of the die core is of a square frustum cone structure.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The die core can be replaced, so that profiles of different specifications can be manufactured.

[0015] 2. The positioning block is clamped between the inner positioning hole and the outer positioning hole, locking and fixing the first die shell and the second die shell, with high stability.

[0016] 3. The first die shell and the second die shell are convenient to disassemble and assemble, and the die core is convenient to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the schematic front sectional structure view of the present utility model;

[0018] Figure 2 is Figure 1 the enlarged structure view of part A of

[0019] Figure 3 is the schematic side view structure of the die core of the present utility model.

[0020] In the figure: 1. Extrusion cylinder; 2. Extrusion rod; 3. Extrusion pad; 4. Die core; 5. Extrusion cavity; 6. Bolt; 7. First die shell; 8. Second die shell; 9. Forming cavity; 10. Docking groove; 11. Docking head; 12. Inner positioning hole; 13. Positioning spring; 14. Positioning block; 15. Outer positioning hole; 16. Small hole; 17. Gradient temperature control area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-3 , the utility model provides an isothermal gradient extrusion die for aluminum alloy profiles, which comprises an extrusion die assembly. The extrusion die assembly includes an extrusion cylinder 1, an extrusion rod 2, an extrusion pad 3, a die shell and a die core 4. An extrusion cavity 5 is arranged in the extrusion cylinder 1. The extrusion rod 2 is fixedly connected with the extrusion pad 3, and the extrusion pad 3 is fitted in the extrusion cavity 5. The extrusion cylinder 1 is fixedly connected with the die shell through bolts 6. The die shell includes a first die shell 7 and a second die shell 8. There is a clamping cavity between the first die shell 7 and the second die shell 8. The die core 4 is clamped in the clamping cavity. The die core 4 is provided with a forming cavity 9 communicated with the extrusion cavity 5. The first die shell 7 and the second die shell 8 are connected through a locking mechanism. During processing, the aluminum alloy blank enters the extrusion cavity 5, is extruded by the extrusion rod 2 and the extrusion pad 3, passes through the die core 4 between the first die shell 7 and the second die shell 8 of the die, and forms the required shape through the forming cavity 9. By arranging a clamping cavity between the first die shell 7 and the second die shell 8, the die core 4 is stuck in the clamping cavity, and the die core 4 can be replaced after the first die shell 7 and the second die shell 8 are opened, so that profiles of different specifications can be manufactured. When installing and fixing the first die shell 7 and the second die shell 8, the first die shell 7 and the second die shell 8 are locked and fixed through the locking mechanism, and the stability is high.

[0023] Specifically, a docking groove 10 is arranged at the connection between the second die shell 8 and the first die shell 7, and the first die shell 7 is provided with a docking head 11 matched with it. In this embodiment, the stability at the connection between the first die shell 7 and the second die shell 8 is enhanced.

[0024] Specifically, two sets of the locking mechanisms are arranged oppositely. In this embodiment, by arranging two sets oppositely, the locking stability is further enhanced.

[0025] Specifically, the locking mechanism includes an inner positioning hole 12 arranged on the first die shell 7. A positioning spring 13 and a positioning block 14 are arranged in the inner positioning hole 12. The second die shell 8 is provided with an outer positioning hole 15 corresponding to the inner positioning hole 12. The positioning block 14 is stuck between the inner positioning hole 12 and the outer positioning hole 15 under the extrusion of the positioning spring 13. In this embodiment, when installing and fixing the first die shell 7 and the second die shell 8, first, the positioning block 14 is completely pressed back into the inner positioning hole 12, then the docking groove 10 of the second die shell 8 is sleeved on the docking head 11 of the first die shell 7. After in place, the outer positioning hole 15 corresponds to the inner positioning hole 12, and the positioning block 14 will be stuck between the inner positioning hole 12 and the outer positioning hole 15 under the extrusion of the positioning spring 13, then the first die shell 7 and the second die shell 8 are locked and fixed, and the positioning block 14 will not completely enter the inner positioning hole 12 under the action of the positioning spring 13, and the stability is high.

[0026] Specifically, the second die shell 8 is provided with small holes 16 communicating with the outer positioning holes 15; in this embodiment, when it is necessary to disassemble, the positioning block 14 is pressed back into the inner positioning hole 12 through the small holes 16 via an external component, and then the first die shell 7, the second die shell 8 and the inner die core 4 can be disassembled.

[0027] Specifically, a gradient temperature control area 17 is arranged outside the extrusion cylinder 1, and the gradient temperature control area 17 includes multiple groups of cooling pipes; in this embodiment, before extrusion, the gradient temperature control area 17 performs different temperature controls on the heated blank through different cooling pipes, so as to achieve a gradient distribution of the blank temperature along the length and realize isothermal extrusion.

[0028] Specifically, the outer wall of the die core 4 is of a square frustum structure; in this embodiment, during the gradual docking process of the first die shell 7 and the second die shell 8, automatic centering and positioning are realized through the cooperation between the clamping groove and the square frustum outer wall of the die core 4.

[0029] For the convenience of understanding the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process will be described in detail below.

[0030] Working principle: During processing, before extrusion, the gradient temperature control area 17 performs different temperature controls on the heated blank through different cooling pipes, so as to achieve a gradient distribution of the blank temperature along the length. The aluminum alloy blank enters the extrusion cavity 5 and is extruded through the extrusion rod 2 and the extrusion pad 3, passes through the die core 4 between the first die shell 7 and the second die shell 8, and forms the required shape through the forming cavity 9.

[0031] By arranging a clamping cavity between the first die shell 7 and the second die shell 8, the die core 4 is stuck in the clamping cavity, and the die core 4 can be replaced after the first die shell 7 and the second die shell 8 are opened, so that profiles of different specifications can be manufactured.

[0032] When installing and fixing the first die shell 7 and the second die shell 8, first press the positioning block 14 completely back into the inner positioning hole 12, and then sleeved the docking groove 10 of the second die shell 8 on the docking head 11 of the first die shell 7. After in place, the outer positioning hole 15 corresponds to the inner positioning hole 12, and the positioning block 14 will be stuck between the inner positioning hole 12 and the outer positioning hole 15 under the extrusion action of the positioning spring 13. Then the first die shell 7 and the second die shell 8 are locked and fixed, and the positioning block 14 will not completely enter the inner positioning hole 12 under the action of the positioning spring 13, with high stability.

[0033] When it is necessary to disassemble, the positioning block 14 is pressed back into the inner positioning hole 12 through the small holes 16 via an external component, and then the first die shell 7, the second die shell 8 and the inner die core 4 can be disassembled.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An isothermal gradient extrusion die for aluminum alloy profiles, comprising an extrusion die assembly, characterized in that: The extrusion die assembly comprises an extrusion cylinder (1), an extrusion rod (2), an extrusion pad (3), a mold shell and a mold core (4); an extrusion cavity (5) is provided in the extrusion cylinder (1), the extrusion rod (2) is fixedly connected to the extrusion pad (3), and the extrusion pad (3) is matched with the extrusion cavity (5); the extrusion cylinder (1) is fixedly connected to the mold shell by bolts (6), the mold shell comprises a first mold shell (7) and a second mold shell (8), a clamping cavity is provided between the first mold shell (7) and the second mold shell (8), the mold core (4) is clamped in the clamping cavity, and the mold core (4) is provided with a molding cavity (9) connected to the extrusion cavity (5); the first mold shell (7) and the second mold shell (8) are connected by a locking mechanism.

2. The isothermal gradient extrusion die for aluminum alloy profiles according to claim 1, characterized in that: A docking groove (10) is provided at the connection between the second mold shell (8) and the first mold shell (7), and the first mold shell (7) is provided with a docking joint (11) matching therewith.

3. The isothermal gradient extrusion die for aluminum alloy profiles according to claim 1, characterized in that: The locking mechanisms are arranged in two groups opposite to each other.

4. The isothermal gradient extrusion die for aluminum alloy profiles according to claim 1, characterized in that: The locking mechanism comprises an inner positioning hole (12) mounted on the first mold shell (7), a positioning spring (13) and a positioning block (14) being installed in the inner positioning hole (12), an outer positioning hole (15) corresponding to the inner positioning hole (12) being provided on the second mold shell (8), and the positioning block (14) being squeezed by the positioning spring (13) and clamped between the inner positioning hole (12) and the outer positioning hole (15).

5. The isothermal gradient extrusion die for aluminum alloy profiles according to claim 4, characterized in that: The second mold shell (8) is provided with a small hole (16) communicating with the external positioning hole (15).

6. The isothermal gradient extrusion die for aluminum alloy profiles according to claim 1, characterized in that: The extrusion barrel (1) is provided with a gradient temperature control zone (17) outside, and the gradient temperature control zone (17) includes a plurality of groups of cooling pipes.

7. The isothermal gradient extrusion die for aluminum alloy profiles according to claim 1, characterized in that: The outer wall of the mold core (4) is a square stepped cone structure.

Images