Hot extrusion die provided with profiling guide plate and used for producing automobile profiles

Abstract

The utility model discloses a hot extrusion die with a profiling guide plate for producing automobile profiles, which comprises an upper die, a feeding hole is arranged on one side of the upper die and used for guiding aluminum flow to flow towards a lower die, the lower die is in close fit with one side of the upper die, a welding chamber is milled on one side of the lower die close to the upper die, and the welding chamber is communicated with the feeding hole. A cavity communicated with the welding chamber is formed in the welding chamber, comprises a wall thickness point location hole and a wall thickness point location hole perpendicular to the wall thickness point location hole, and is used for hot extrusion production of automobile profiles. According to the utility model, the profiling guide plate is arranged, so that an area with wider wall thickness at the bottom of the automobile profile can be fully welded, the mechanical property of the automobile profile can reach the standard, further, the inclined surface section is arranged, so that aluminum flow in a thin-wall point position hole is fully supplied, the flow velocity can follow the flow velocity of aluminum flow in a thick-wall point position hole, the whole aluminum flow is discharged in a balanced manner, and the service life of the aluminum flow is prolonged. And the produced automobile profile has no chromatic aberration on the surface, and is better in quality.

Description

Technical Field

[0001] The utility model particularly relates to a hot extrusion die with a profiled deflector plate for producing automobile profiles. Background Art

[0002] Automotive profiles are a variety of metal materials used to manufacture automobile bodies, chassis and other parts. They mainly include three categories, namely steel profiles, aluminum alloy profiles, and other metal profiles. Among them, aluminum alloy automotive profiles have good comprehensive properties such as corrosion resistance, weldability, and high strength. They are often used in the manufacture of automobile bodies, wheels, radiators and other parts. With the continuous development of the automotive industry, the requirements for automotive profiles are also constantly increasing. Accordingly, quality control of automotive profiles made of aluminum alloys is also an indispensable process.

[0003] like Figure 6 The figure shown is one of the existing automotive profiles. Currently, hot extrusion dies are often used to extrude aluminum flows that have been melted into aluminum flows to produce the above-mentioned automotive profiles. It can be seen that the wall thickness at the bottom of the profile section is wider and the wall thickness at the top is narrower. When producing the above-mentioned automotive profiles, traditional hot extrusion dies cannot ensure that the aluminum flows at the wider wall thickness are fully welded. The mechanical properties of the produced automotive profiles are poor, and the top with narrow wall thickness often has insufficient feed, resulting in a flow rate difference between the aluminum flows at the wider wall thickness and the automotive profile surface. The quality does not meet the standards.

[0004] Therefore, it is necessary to invent a hot extrusion die for producing automobile profiles with a profiled deflector to solve the above problems. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a hot extrusion die for producing automobile profiles with a contoured guide plate. By providing the contoured guide plate, the wider area of ​​the bottom wall thickness of the automobile profile can be fully welded to ensure that its mechanical properties meet the standards. Furthermore, by providing the inclined section, the aluminum flow in the thin-wall point hole is sufficiently supplied, and the flow rate can keep up with the flow rate of the aluminum flow in the thick-wall point hole. The overall discharge of the aluminum flow is balanced and the trend is uniform. There is no color difference on the surface of the produced automobile profile, and the quality is good.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned object, the utility model provides the following technical solution: a hot extrusion die for producing automobile profiles with a contoured deflector, comprising an upper die, a feed hole being provided on one side of the upper die for guiding aluminum flow toward a lower die;

[0009] The lower die is tightly matched with one side of the upper die. A welding chamber is milled and sunk on the side of the lower die close to the upper die. A cavity communicating with the welding chamber is formed inside the welding chamber. The cavity includes a wall thickness point hole and a wall thin point hole perpendicular to the wall thickness point hole, and is used for hot extrusion production of automobile profiles.

[0010] The profiling guide plate is arranged inside the welding chamber and connected to the side wall of the lower mold. The profiling guide plate is aligned with the wall thickness point hole, and the profiling guide plate is located at the intersection of the wall thickness point hole and the wall thin point hole and has a slope section milled and sunk.

[0011] Preferably, the wall thickness point hole and the wall thin point hole are both perpendicular to the center axis of the lower mold.

[0012] Preferably, the bottom of the inclined surface section is flush with the side wall of the lower mold located at the welding chamber, and the connection between the bottom of the inclined surface section and the lower mold is set as an arc surface.

[0013] Preferably, the contoured guide plate is consistent with the shape of the welding chamber at the wall thickness point hole.

[0014] Preferably, the milling depth of the welding chamber is set to 5-7 mm, and the contoured guide plate is milled downward by 2-3 mm.

[0015] Preferably, the bottom of the lower mold is further provided with a discharge hole connected to the cavity, and the discharge hole is arranged in a stepped shape.

[0016] Preferably, the upper mold and the lower mold are fastened to each other through fasteners to form a mold body.

[0017] Compared with the prior art, the beneficial effects of the above technical solution of the utility model are:

[0018] 1. The utility model adds a contoured guide plate in front of the entrance of the wall thickness point hole, so that the aluminum flow entering the wall thickness point hole will first be squeezed and welded by the contoured guide plate, and then squeezed and welded again by the wall thickness point hole after entering the wall thickness point hole, thereby extending the welding length of the aluminum flow at the bottom of the automobile profile, so that the thicker area at the bottom of the automobile profile can be fully welded, ensuring that its mechanical properties meet the standards;

[0019] 2. The utility model is provided with an inclined section so that a part of the aluminum flow at the entrance of the wall thickness point hole will smoothly transition to the thin-wall point hole along the inclined section, ensuring that the aluminum flow in the thin-wall point hole is sufficient. The cavity length at the thin-wall point hole is relatively shorter than that at the thick-wall point hole because there is no contoured guide plate. The aluminum flow can be fused first, and the friction stroke of the aluminum flow in the thin-wall point hole is shorter, so that the flow rate of the aluminum flow can keep up with the flow rate of the aluminum flow in the thin-wall point hole, achieving balanced discharge of the entire cavity and a smooth aluminum flow trend, avoiding color difference on the surface of the formed automobile profile, thereby ensuring that the surface quality of the produced automobile profile meets the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a cross-sectional view of the utility model;

[0023] Figure 3 This is a schematic diagram of the lower mold structure of the present utility model;

[0024] Figure 4 This is a top view of the lower mold of the utility model;

[0025] Figure 5 This is an exploded view of the lower die and contoured guide plate of the utility model;

[0026] Figure 6 This is a schematic cross-sectional view of the automobile profile produced by the present utility model.

[0027] Description of reference numerals:

[0028] 1 upper die, 2 feed hole, 3 lower die, 4 welding chamber, 5 cavity, 51 wall thickness point hole, 52 wall thin point hole, 6 contoured guide plate, 61 inclined surface section, 62 arc surface, 7 discharge hole. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The utility model provides Figure 1-6The hot extrusion die for producing automobile profiles with a contoured guide plate shown in the figure comprises an upper die 1, a feed hole 2 is opened on one side of the upper die 1 for guiding aluminum flow to flow toward a lower die 3;

[0031] The lower die 3 is tightly fitted with one side of the upper die 1. A welding chamber 4 is milled and sunk on the side of the lower die 3 close to the upper die 1. A cavity 5 communicating with the welding chamber 4 is formed inside the welding chamber 4. The cavity 5 includes a wall thickness point hole 51 and a wall thin point hole 52 perpendicular to the wall thickness point hole 51, and is used for hot extrusion production of automobile profiles.

[0032] The profiling guide plate 6 is arranged inside the welding chamber 4 and connected to the side wall of the lower mold 3. The profiling guide plate 6 is aligned with the wall thickness point hole 51, and the profiling guide plate 6 is located at the intersection of the wall thickness point hole 51 and the wall thin point hole 52 and has a bevel section 61 milled thereon.

[0033] In one embodiment, the wall thickness point hole 51 and the wall thin point hole 52 are both perpendicular to the central axis of the lower mold 3, so that the automobile profile can be smoothly formed, and the contoured guide plate 6 is consistent with the shape of the welding chamber 4 located at the wall thickness point hole 51, and the bottom of the inclined section 61 is flush with the side wall of the lower mold 3 located at the welding chamber 4, and the connection between the bottom of the inclined section 61 and the lower mold 3 is set to an arc surface 62, so that the aluminum flow impacting the contoured guide plate 6 will be smoother and more stable when transitioning to the wall thin point hole 52, without any turbulence.

[0034] In one embodiment, the milling depth of the welding chamber 4 is set to 5-7 mm, and the contoured guide plate 6 is milled downward by 2-3 mm to ensure that the aluminum flow inside the welding chamber 4 is sufficient, so that there is sufficient aluminum flow to supply material to each part of the aluminum flow in the cavity 5 during welding, thereby ensuring the welding quality.

[0035] In one embodiment, a discharge hole 7 connected to the cavity 5 is further provided at the bottom of the lower mold 3. The discharge hole 7 is arranged in a stepped shape to facilitate the extrusion of the aluminum profile after molding, thereby ensuring the integrity of the surface of the aluminum profile. The upper mold 1 and the lower mold 3 are fastened to each other to form a mold body through fasteners. Specifically, the fasteners are arranged as pins or bolts to facilitate the staff to assemble the mold body, and the mold body as a whole is disc-shaped, which is convenient for the staff to use the mold body.

[0036] The specific embodiment is as follows: When the present invention is in use, aluminum flows into the upper die 1 through the feed hole 2, flows along the inner wall of the upper die 1 toward the lower die 3, gathers in the welding chamber 4, and flows into the cavity 5, where it is extruded into an aluminum alloy automobile profile. It is further discharged through the discharge hole 7, thereby completing the production of the automobile profile. In the process of aluminum flow flow, specifically:

[0037] When the aluminum flow flows into the welding chamber 4, the aluminum flow corresponding to the upper part of the cavity 5 will directly and unimpededly enter the thin-wall point hole 52, and be extruded and welded through the thin-wall point hole 52 to form the top of the automobile profile;

[0038] The aluminum flow corresponding to the bottom of the cavity 5 will first impact the contoured guide plate 6, and then enter the interior of the contoured guide plate 6 through the opening of the contoured guide plate 6. At this time, the aluminum flow will first be squeezed and welded by the contoured guide plate 6, and further, the aluminum flow will flow into the wall thickness point hole 51 corresponding to the aluminum flow. At this time, the aluminum flow will be squeezed and welded by the wall thickness point hole 51, that is, the contoured guide plate 6 extends the welding length of the aluminum flow at the bottom of the automobile profile, ensuring that the aluminum flow in the wall thickness point hole 51 is fully fed, and can jointly squeeze and weld the bottom of the automobile profile with the wall thickness point hole 51, so that the bottom of the automobile profile is fully welded, ensuring that the mechanical properties of the automobile profile meet the standards;

[0039] At the same time, since the outer surface of the contoured guide plate 6 is provided with the inclined surface section 61, a part of the aluminum flow that impacts the contoured guide plate 6 will flow toward the thin-wall point hole 52 along the inclination angle of the inclined surface section 61, so that the aluminum flow in the thin-wall point hole 52 at the top is sufficiently supplied, the aluminum flow transition is smooth, and the cavity 5 at the thin-wall point hole 52 is overall sunken compared to the thick-wall point hole 51 with the contoured guide plate 6, so that in the welding chamber 4, the aluminum flow at the thin-wall point hole 52 is first merged, so that the aluminum flow at this location shortens the friction stroke with the aluminum flow at the thick-wall point hole 51 in the cavity 5, so that the flow rate of the aluminum flow at this location can keep up with the flow rate of the aluminum flow in the thick-wall point hole 51, achieving balanced discharge of the entire cavity 5, and a stable aluminum flow trend, avoiding the existence of the surface of the formed automobile profile, thereby ensuring that the surface quality of the produced automobile profile can meet the standards;

[0040] This embodiment specifically solves the problem in the prior art that, when producing aluminum alloy automobile profiles with a wider wall thickness at the bottom and a narrower wall thickness at the top, the traditional hot extrusion die cannot ensure that the aluminum flow at the wider wall is fully welded, resulting in poor mechanical properties of the produced automobile profiles, and the top with the narrow wall thickness often has insufficient feed, resulting in a flow rate difference between the aluminum flow at the wider wall thickness and the aluminum flow, resulting in color difference on the surface of the automobile profile and substandard quality.

[0041] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description 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 producing automobile profiles with a contoured deflector, characterized by: include: An upper die (1), wherein a feed hole (2) is provided on one side of the upper die (1) for guiding the aluminum flow to flow toward the lower die (3); The lower die (3) is tightly matched with one side of the upper die (1), and a welding chamber (4) is milled on the side of the lower die (3) close to the upper die (1). A cavity (5) is provided inside the welding chamber (4) and is connected to the welding chamber (4). The cavity (5) includes a wall thickness point hole (51) and a wall thin point hole (52) perpendicular to the wall thickness point hole (51), and is used for hot extrusion production of automobile profiles; The profiling guide plate (6) is arranged inside the welding chamber (4) and connected to the side wall of the lower mold (3). The profiling guide plate (6) is aligned with the wall thickness point hole (51), and the profiling guide plate (6) is located at the intersection of the wall thickness point hole (51) and the wall thin point hole (52) and is milled with a bevel section (61).

2. The hot extrusion die for producing automobile profiles with a contoured deflector according to claim 1, characterized in that: The wall thickness point hole (51) and the wall thin point hole (52) are both perpendicular to the central axis of the lower mold (3).

3. The hot extrusion die for producing automobile profiles with a contoured deflector according to claim 1, characterized in that: The bottom of the inclined surface section (61) is flush with the side wall of the lower mold (3) located at the welding chamber (4), and the connection between the bottom of the inclined surface section (61) and the lower mold (3) is set as an arc surface (62).

4. The hot extrusion die for producing automobile profiles with a contoured deflector according to claim 1, characterized in that: The contoured guide plate (6) is consistent in shape with the welding chamber (4) at the wall thickness point hole (51).

5. The hot extrusion die for producing automobile profiles with a contoured deflector according to claim 4, characterized in that: The milling depth of the welding chamber (4) is set to 5-7 mm, and the contoured guide plate (6) is milled downward by 2-3 mm.

6. The hot extrusion die for producing automobile profiles with a contoured deflector according to claim 1, characterized in that: The bottom of the lower mold (3) is also provided with a discharge hole (7) connected to the mold cavity (5), and the discharge hole (7) is arranged in a stepped shape.

7. The hot extrusion die for producing automobile profiles with a contoured deflector according to claim 1, characterized in that: The upper mold (1) and the lower mold (3) are fastened together to form a mold body via fasteners.

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