Aluminum hot extrusion die for processing solid material with thickness difference

Abstract

The utility model discloses an aluminum hot extrusion die for processing solid materials with different thicknesses, and belongs to the technical field of aluminum extrusion dies. The mold comprises a mold body, a mold cavity and a working belt penetrating through the mold body. The die cavity comprises a flow guide area and a transition area; the working belt is used for discharging profiles with large thickness difference and comprises a thin-wall area and a thick-wall area, and the thin-wall area is divided into a short thin-wall area and a long thin-wall area according to the thin-wall area of the thin-wall area. According to the aluminum hot extrusion die for processing the thickness difference solid material, the flow guide pits with different areas and depths are designed to correspond to different thick and thin wall processing areas to optimize a die inlet and aluminum material supply distribution, and the pinching openings are designed to pinch the thick and thin transition inlets, so that uniform flowing of molten aluminum in the die can be effectively ensured, the material grabbing phenomenon in a thick point area is reduced, and the production efficiency is improved. Therefore, sufficient supply of molten aluminum in the thin-point area is ensured, and consistency and quality of finished products are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminium extrusion die technical field, especially in processing thick thin difference solid material's aluminium hot extrusion die. BACKGROUND

[0002] In the aluminium processing industry, aluminium hot extrusion as an important forming process is widely used in the production of various aluminium alloy profiles due to its high efficiency and economy. However, in the actual production process, especially when processing 3 series aluminium manganese alloy materials with large thickness difference, there are a series of technical problems and challenges that need to be solved.

[0003] Large thickness difference profiles face significant challenges in the uniformity of aluminium supply. The flow of aluminium liquid in the die is subject to the thickness variation of the material. The thick point area may "steal material" due to smaller flow resistance, resulting in insufficient supply of aluminium liquid in the thin point area. This uneven supply not only affects the quality of the final product, but also causes material waste. Secondly, the design of the die and the configuration of the working belt also have an important impact on the flow of aluminium liquid. Too long working belt will cause the aluminium liquid to stagnate during the flow process, increasing the friction and resistance in the extrusion process, which may cause the temperature of the aluminium liquid to drop rapidly, affecting the flowability and forming effect of the aluminium liquid. In the case of large thickness difference and uneven material flow, some areas of the die will be subjected to greater wear pressure, resulting in shortened die life, increased production cost and frequency of downtime maintenance. Therefore, it is urgent to develop a die structure with uniform aluminium supply, reasonable die design and proper working belt configuration. For this reason, we propose an aluminium hot extrusion die for processing thick thin difference solid material. SUMMARY

[0004] The utility model discloses a kind of aluminium hot extrusion dies for processing thick thin difference solid material, to solve the aluminium hot extrusion die for processing thick thin difference solid material existing in present is faced with aluminium supply uneven, unreasonable die design, improper working belt configuration and die wear intensifies and so on Many problems.

[0005] To solve the above technical problems, the utility model provides an aluminium hot extrusion die for processing thick thin difference solid material, including die, the die includes die body, the die cavity being set to the inboard of the die body, and the working belt being penetrated in the die body;

[0006] The die cavity includes flow guide area, and transition area is set to one side of the flow guide area;

[0007] The working belt is used for the profile of thin thick difference big material discharge, and it includes thin wall area and thick wall area, the thin wall area is divided into short thin wall area and long thin wall area according to its thin wall area size.

[0008] Preferably, the die body comprises an inlet end face, which is open to the side of the flow guide area in the direction of the aluminum liquid feeding.

[0009] Preferably, the flow guide area comprises a first flow guide pit, a second flow guide pit and a third flow guide pit.

[0010] The first flow guide pit corresponds to the short thin-wall area of the profile.

[0011] The second flow guide pit corresponds to the long thin-wall area of the profile.

[0012] The third flow guide pit corresponds to the thick-wall area of the profile.

[0013] Preferably, the area ratio between the first flow guide pit and the second flow guide pit is equal to the area ratio between the short thin-wall area and the long thin-wall area of the profile.

[0014] Preferably, the first flow guide pit and the second flow guide pit have equal depth and are greater than the third flow guide pit.

[0015] Preferably, the transition area comprises a transition gap provided between the flow guide area and the working belt for distributing the aluminum liquid supply.

[0016] The transition area comprises a transition gap provided between the thin-wall area and the thick-wall area.

[0017] Preferably, the working belt further comprises a plurality of barrier angles provided on the inner surface thereof for ensuring the dimensional stability of the profile.

[0018] Compared with the prior art, the aluminum hot extrusion die for processing thick-thin differential solid material has the following beneficial effects:

[0019] 1. The aluminum hot extrusion die for processing thick-thin differential solid material can effectively ensure the uniform flow of the aluminum liquid in the die, reduce the "material stealing" phenomenon in the thick point area, thereby ensuring sufficient aluminum liquid supply in the thin point area and improving the consistency and quality of the finished product.

[0020] 2. The aluminum hot extrusion die for processing thick-thin differential solid material can effectively limit the excessive inflow of the aluminum liquid in the thick-wall area by the design of the pinch gap, ensure that the thin-wall area can obtain sufficient aluminum liquid supply, and set barrier angles on the working belt to guide the flow of the aluminum liquid and reduce friction, thereby ensuring that the aluminum liquid maintains a high temperature and good fluidity when entering the forming area. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic view of the aluminum hot extrusion die for processing thick-thin differential solid material without a working belt according to the present application;

[0022] Figure 2 is a structure schematic view of a middle die cavity of an aluminum hot extrusion die for processing thick-thin difference solid material provided by the utility model;

[0023] In the figure: 1, die; 101, entrance end face; 2, die body; 3, die cavity; 301, flow guide area; 301a, first flow guide pit; 301b, second flow guide pit; 301c, third flow guide pit; 302, transition area; 302a, transition port; 4, working belt; 401, thin wall area; 401a, short thin wall area; 401b, long thin wall area; 402, thick wall area; 403, hindering angle. DETAILED DESCRIPTION

[0024] The utility model makes further detailed description in combination with the drawings and specific embodiments. The advantages and features of the utility model will be more apparent according to the following description and claims. It should be noted that the drawings all adopt very simplified form and all use non-precise proportion, only to facilitate, clearly assist the purpose of description of the embodiment of the utility model.

[0025] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0026] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances. EMBODIMENT

[0027] The utility model provides a kind of aluminum hot extrusion die for processing thick-thin difference solid material, please refer to Figures 1-2, including a mold 1, the mold 1 includes a mold body 2, a mold cavity 3 arranged inside the mold body 2, and a working belt 4 penetrating the mold body 2; the mold cavity 3 includes a flow guide area 301, and a transition area 302 arranged on one side of the flow guide area 301; the working belt 4 is used for profile discharge with large thickness difference, which includes a thin wall area 401 and a thick wall area 402, and the thin wall area 401 is divided into a short thin wall area 401a and a long thin wall area 401b according to the size of the thin wall area.

[0028] The mold body 2 includes an inlet end face 101, which is opened to the flow guide area 301 on the side of the aluminum liquid feeding direction; the flow guide area 301 includes a first flow guide pit 301a, a second flow guide pit 301b and a third flow guide pit 301c; the first flow guide pit 301a corresponds to the short thin wall area 401a of the profile; the second flow guide pit 301b corresponds to the long thin wall area 401b of the profile; the third flow guide pit 301c corresponds to the thick wall area 402 of the profile; the area ratio between the first flow guide pit 301a and the second flow guide pit 301b is equal to the area ratio between the short thin wall area 401a and the long thin wall area 401b of the profile; the depth of the first flow guide pit 301a and the second flow guide pit 301b is equal and greater than that of the third flow guide pit 301c.

[0029] The transition area 302 includes a transition gap 302a arranged between the flow guide area 301 and the working belt 4 for distributing the aluminum liquid supply; the transition area 302 includes a transition gap 302a arranged between the thin wall area 401 and the thick wall area 402; the working belt 4 further includes a plurality of barrier angles 403 arranged on the inner surface thereof for ensuring the dimensional stability of the profile.

[0030] It should be noted that the mold 1 is cylindrical, the mold cavity 3 is arranged inside the mold 1 towards the feeding port side, the mold body is the main part of the mold 1, which is made of H13 mold steel material, and the specific material is 4Cr5MoSiV1; the mold cavity 3 and the working belt 4 are the main working areas, that is, the path of the aluminum liquid flow.

[0031] Preferably, the mold cavity 3 is divided into a flow guide area 301 and a transition area 302, the flow guide area 301 is located at the front end of the mold and faces the aluminum liquid feeding direction, responsible for the preliminary distribution and guidance of the aluminum liquid, the transition area 302 is located between the flow guide area 301 and the working belt 4, and plays a role in distributing the aluminum liquid supply; the flow guide area 301 is divided into three flow guide pits according to the thickness and area of the corresponding profile discharge area, specifically, the first flow guide pit 301a corresponds to the short thin wall area 401a of the profile, the second flow guide pit 301b corresponds to the long thin wall area 401b of the profile, and the third flow guide pit 301c corresponds to the thick wall area 402 of the profile; this design can ensure that the aluminum liquid can be effectively distributed to each area, thereby ensuring the uniformity and stability of the profile.

[0032] Preferably, as Figure 1As shown, the transition zone 302 mainly includes a slope and a transition notch 302a on one side of the slope, the transition notch 302a presents a narrow channel, the shape of the transition notch 302a is arc-shaped curved surface, the width and height of the transition notch 302a are designed to be small, so as to ensure that the molten aluminum can form a certain pressure when passing through, and promote the flow. The selection of the width and height needs to consider the flowability of the molten aluminum and the thickness difference of the profile, because the first flow guide pit 301a and the second flow guide pit 301b on both sides have different molten aluminum flow, so the shape of the transition notch 302a on both sides is different, which helps to guide the flow of the molten aluminum and reduce the flow resistance, and can effectively limit the excessive inflow of the molten aluminum in the thick wall area 402, and ensure that the thin wall area 401 can obtain sufficient supply of the molten aluminum.

[0033] In summary, the aluminum hot extrusion die for processing thick-thin solid material of the utility model can effectively ensure the uniform flow of the molten aluminum in the die, reduce the "material stealing" phenomenon in the thick point area, so as to ensure that the thin point area has sufficient supply of the molten aluminum, improve the consistency and quality of the finished product, in addition, through the design of the notch, the transition entrance of the thick-thin notch is tightened, which can effectively limit the excessive inflow of the molten aluminum in the thick wall area, ensure that the thin wall area can obtain sufficient supply of the molten aluminum, and the design of the work belt sets the obstacle angle to guide the flow of the molten aluminum and reduce the friction, so as to ensure that the molten aluminum maintains a high temperature and good flowability when entering the forming area.

[0034] The above description is only a description of the preferred embodiment of the utility model, and does not limit the scope of the utility model, any change and modification of the above disclosure made by the ordinary skilled in the art belongs to the protection scope of the claims.

Claims

1. An aluminum hot extrusion die for processing solid materials with different thicknesses, characterized in that: include, A mold (1), the mold (1) comprising a mold body (2), a mold cavity (3) arranged inside the mold body (2), and a working belt (4) passing through the mold body (2); The mold cavity (3) comprises a flow guide area (301) and a transition area (302) arranged on one side of the flow guide area (301); The working belt (4) is used for discharging profiles with a large difference in thickness, and comprises a thin-walled area (401) and a thick-walled area (402). The thin-walled area (401) is divided into a short thin-walled area (401a) and a long thin-walled area (401b) according to the size of the thin-walled area.

2. The aluminum hot extrusion die for processing solid materials with different thicknesses according to claim 1, characterized in that: The mold body (2) comprises an inlet end face (101), and the inlet end face (101) faces the opening side of the guide area (301), which is the feeding direction of the aluminum liquid.

3. The aluminum hot extrusion die for processing solid materials with different thicknesses as claimed in claim 2, characterized in that: The diversion area (301) comprises a first diversion pit (301a), a second diversion pit (301b) and a third diversion pit (301c); The first diversion pit (301a) corresponds to the short thin-walled area (401a) of the profile; The second diversion pit (301b) corresponds to the long thin-walled area (401b) of the profile; The third diversion pit (301c) corresponds to the profile thick-walled area (402).

4. The aluminum hot extrusion die for processing solid materials with different thicknesses as claimed in claim 3, characterized in that: The area ratio between the first diversion pit (301a) and the second diversion pit (301b) is equal to the area ratio between the short thin-walled area (401a) and the long thin-walled area (401b) of the profile.

5. The aluminum hot extrusion die for processing solid materials with different thicknesses as claimed in claim 4, characterized in that: The first diversion pit (301a) and the second diversion pit (301b) have the same depth and are greater than the third diversion pit (301c).

6. The aluminum hot extrusion die for processing solid materials with different thicknesses as claimed in claim 5, characterized in that: The transition zone (302) is provided between the guide zone (301) and the working zone (4) and is used for distributing the supply of molten aluminum; The transition zone (302) includes a transition opening (302a) opened between the thin-walled zone (401) and the thick-walled zone (402).

7. The aluminum hot extrusion die for processing solid materials with different thicknesses as claimed in claim 1, characterized in that: The working belt (4) further comprises a plurality of obstruction angles (403) provided on its inner surface, for ensuring the dimensional stability of the profile.

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