Extrusion apparatus for manufacturing hollow extruded materials
The extrusion apparatus addresses the challenge of insufficient strength in aluminum alloy bumper beams by inserting a rigid wire into the extruded material, forming a hollow structure with ribs, resulting in high-strength, lightweight components.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- デジュ コレス カンパニーリミテッド
- Filing Date
- 2024-12-20
- Publication Date
- 2026-06-25
AI Technical Summary
Existing methods for manufacturing aluminum alloy bumper beams struggle to achieve sufficient strength while maintaining weight reduction through extrusion processes.
An extrusion apparatus with a first and second die configuration that allows for the insertion of a rigid wire into the extruded material, enhancing its strength by forming a hollow structure with ribs and using a wire insertion opening between extrusion passages.
The apparatus ensures high strength and lightweight aluminum alloy extruded materials, suitable for vehicle bumper beams, by stabilizing wire insertion and reinforcing the material's rigidity.
Smart Images
Figure 2026104729000001_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to an extrusion device for manufacturing a hollow extruded material, and more particularly, to an extrusion device for manufacturing an extruded material in a form in which a wire is inserted into an aluminum alloy extruded material to improve strength.
Background Art
[0002] When a vehicle collides with other vehicles or external fixed objects, etc., a bumper is used to absorb and mitigate the impact and protect the vehicle body and internal components of the vehicle. A bumper beam forms the framework of the bumper, and is usually made of a metal material such as iron to reduce weight and increase strength, and can be formed hollow.
[0003] Various techniques have been developed that can improve the strength while reducing the weight of the bumper beam. For example, techniques using an aluminum alloy or fiber reinforced plastic for weight reduction are known.
[0004] On the other hand, when manufacturing a bumper beam from an aluminum alloy, although weight reduction can be achieved and manufacturing can be carried out through extrusion, there is a problem that it is difficult to obtain sufficient strength.
[0005] Therefore, in the present disclosure, when manufacturing an extruded material such as a bumper beam from an aluminum alloy or the like through an extrusion process, a manufacturing method capable of increasing its strength is proposed.
Summary of the Invention
Problems to be Solved by the Invention
[0006] An object of the present disclosure is to solve the problems of the above-described conventional technologies. An object of the present disclosure is to provide an extrusion device for manufacturing a hollow extruded material whose strength can be improved through wire insertion.
Means for Solving the Problems
[0007] A typical configuration of this disclosure for achieving the aforementioned objectives is as follows:
[0008] An extrusion apparatus for manufacturing a hollow extruded material according to one embodiment of the present disclosure includes a first die and a second die positioned in front of the first die along the extrusion direction. The first die has a first extrusion passage formed through it along the extrusion direction, a second extrusion passage formed spaced apart from the first extrusion passage and passing through it along the extrusion direction, and at least one wire insertion opening formed between the first and second extrusion passages. The apparatus is configured such that a wire is inserted into the interior of the extruded material through at least one wire insertion opening, and the wire is made of a material with higher rigidity than the extruded material.
[0009] According to one embodiment of the present disclosure, the exit of the first extrusion path can be formed with an inclined surface in the direction toward the wire insertion port.
[0010] According to one embodiment of the present disclosure, the first die may further include a core portion having a cross-section perpendicular to the extrusion direction that corresponds to a hollow shape. In this case, the second extrusion passage is located behind the core portion, and the exit of the second extrusion passage may be formed toward at least one wire insertion port.
[0011] According to one embodiment of the present disclosure, the first extrusion path can be formed in multiple ways along the circumferential direction of the first die.
[0012] According to one embodiment of the present disclosure, the extruded material may be formed to include at least one rib inside the hollow interior.
[0013] According to one embodiment of the present disclosure, gaps may be formed in the core portion at positions corresponding to ribs.
[0014] According to one embodiment of the present disclosure, a third extrusion passage may be formed in the second die, which is connected to the first and second extrusion passages and penetrates along the extrusion direction.
[0015] According to an embodiment of the present disclosure, a valley with a predetermined width may be formed along the extrusion direction between at least one wire insertion hole adjacent to each other on the inclined surface.
[0016] In addition to this, the extrusion device according to the present disclosure may further include other additional configurations as long as they do not harm the technical idea of the present disclosure.
Effects of the Invention
[0017] According to an embodiment of the present disclosure, during extrusion for manufacturing a hollow extruded material, it is possible to ensure high strength while forming the extruded material with a light metal such as an aluminum alloy through wire insertion.
[0018] Also, according to an embodiment of the present disclosure, by forming a wire insertion hole for wire insertion between two extrusion paths, the wire can be stably arranged inside the extruded material, effectively enhancing the strength of the extruded material.
Brief Description of the Drawings
[0019] [Figure 1] It is a drawing exemplarily showing a bumper beam used for an automobile bumper. [Figure 2] It is a drawing showing a cross-sectional structure of an extruded material according to an embodiment of the present disclosure. [Figure 3] It is a drawing schematically showing an extrusion device according to an embodiment of the present disclosure. [Figure 4] It is a drawing showing a first die of an extrusion device according to an embodiment of the present disclosure. [Figure 5] It is a cross-sectional view showing an internal structure of a first die of an extrusion device according to an embodiment of the present disclosure. [Figure 6] It is a cross-sectional view showing internal structures of a first die and a second die according to an embodiment of the present disclosure.
Modes for Carrying Out the Invention
[0020] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the following, when it is determined that there is a risk of unnecessarily obscuring the gist of the present disclosure, specific descriptions of functions and configurations that are already known will be omitted.
[0021] The terms used in the present disclosure are merely used to describe specific embodiments and are not intended to limit the present disclosure. For example, a component expressed in the singular should be understood as a concept including a plurality of components unless the context clearly indicates otherwise. Terms such as "including" or "having" used in the present disclosure merely intend to specify the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the present disclosure, and do not intend to exclude the possibility of the existence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.
[0022] Unless otherwise specifically defined herein, all terms used in the present disclosure, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the context of the related art, and it should be understood that they are not to be interpreted with undue limitation or expansion unless specifically defined in the present disclosure.
[0023] Throughout the specification, the same or similar reference numerals will be assigned to the same components. Also, the sizes, thicknesses, positions, etc. of each configuration shown in the drawings are arbitrarily or exaggeratedly shown for the convenience of explanation, and the present disclosure is not necessarily limited to what is shown in the drawings. That is, it should be understood that the specific shapes, structures, and characteristics described in the specification can be changed and implemented from one embodiment to another without departing from the spirit and scope of the present disclosure, and the positions or arrangements of individual components can also be changed without departing from the spirit and scope of the present disclosure.
[0024] In this specification, forward means the side from which the extruded material is discharged, i.e., the outlet side in the extrusion direction, relative to the extruder, and backward means the side from which the billet is drawn in, i.e., the inlet side in the extrusion direction. In this specification, extruded material means the product manufactured through extrusion, billet means the raw material used in extrusion, and extruded material means the substance being extruded.
[0025] The embodiments of this disclosure will be described in detail below with reference to the attached drawings.
[0026] Figure 1 is a diagram illustrating a bumper beam used in automobile bumpers.
[0027] Bumper beams used in automobiles generally have the form of long bars extending from left to right relative to the vehicle body. According to one embodiment of this disclosure, bumper beams can be manufactured by extruding a light metal such as an aluminum alloy. The following embodiments will be described based on the production of an extruded material by extruding an aluminum alloy.
[0028] Figure 2 is a drawing showing the cross-sectional structure of an extruded material according to one embodiment of the present disclosure.
[0029] Referring to Figure 2, an extruded material according to one embodiment of the present disclosure may be manufactured in the form of a hollow tube. In one embodiment, the extruded material may be manufactured as a tube with a substantially rectangular cross-section. Furthermore, an extruded material according to one embodiment of the present disclosure may have a structure that includes at least one rib inside the hollow interior. The rib can be formed to support the long sides and reinforce the strength of the extruded material.
[0030] Figure 3 is a schematic drawing of an extrusion apparatus according to one embodiment of the present disclosure. Referring to Figure 3, the extrusion apparatus 10 according to one embodiment of the present disclosure may include a first die 100 and a second die 200.
[0031] According to one embodiment of the present disclosure, an aluminum alloy billet is first heated and pressurized, then drawn into a first die 100, and subsequently extruded through the first die 100 and the second die 200. In the illustrated embodiment, the billet is drawn in from the rear of the first die 100 (towards the upper right in Figure 3) and extruded toward the front of the second die 200. The configuration for drawing the aluminum alloy billet into the first die 100 (e.g., pressurizing section, heating section, etc.) may be based on known technology, and therefore, illustration and description thereof have been omitted.
[0032] In one embodiment of the present disclosure, the first die 100 of the extrusion apparatus performs the function of supplying an extruded material to the second die 200. In one embodiment, one or more extrusion passages may be formed through the first die 100 in the front-to-back direction, and the extruded material may be configured to move through each extrusion passage to the second die 200. In this case, the extruded material may be formed by heating and pressurizing an aluminum alloy billet and drawing it into the first die 100.
[0033] In one embodiment of the extrusion apparatus according to this disclosure, the second die 200 is positioned in front of the first die 100 along the extrusion direction and performs the function of forming the cross-sectional shape of the extruded material that is pushed out and discharged. That is, the extruded material is drawn into the second die 200 through the first die 100, and the extruded material is discharged from the second die 200 with a defined shape.
[0034] On the other hand, the extrusion apparatus according to one embodiment of the present disclosure can insert a wire into the extruded material. The wire is made of a material with higher rigidity than the extruded material and can reinforce the rigidity of the extruded material. In the illustrated embodiment, the wire is shown to be inserted only in a portion corresponding to one surface of the extruded material, but the apparatus is not limited to this shape. For example, the wire can be inserted in a portion corresponding to the surface opposite to the portion in Figure 3 where the wire is inserted. Or, the wire can be inserted in portions corresponding to all surfaces of the extruded material.
[0035] Figure 4 is a drawing showing the first die of an extrusion apparatus according to one embodiment of the present disclosure, and Figure 5 is a cross-sectional view showing the internal structure of the first die of an extrusion apparatus according to one embodiment of the present disclosure.
[0036] According to one embodiment of the present disclosure, the first extrusion path 110 is in the extrusion direction D e The extrusions are formed along the first die 100, penetrating it. In one embodiment, multiple extrusions may be formed along the circumferential direction of the first die 100. Referring to Figure 4, the first die 100 includes multiple extrusion passages 111, 112, 113, 114, and each extrusion passage may be positioned to correspond to each part of the extruded material being manufactured. For example, to manufacture an extruded rectangular tubular material, the first die 100 may have four extrusion passages 111, 112, 113, 114, and each extrusion passage may be positioned to correspond to each face of the extruded material being manufactured.
[0037] Furthermore, according to one embodiment of the present disclosure, the first die 100 may include a core portion 140. The core portion 140 is positioned in front of the first die 100 and is configured to be inserted into the second die 200, and performs the function of forming the hollow of the extruded material. The core portion 140 is in the extrusion direction D e The cross-section can have a shape corresponding to a hollow structure. In the illustrated embodiment, each core portion 140 has a rectangular cross-section, and gaps can be formed in the portions corresponding to the ribs.
[0038] According to one embodiment of the present disclosure, the second extrusion path 120 is separated from the first extrusion path 110 in the extrusion direction D e It may be formed along the first die 100. In one embodiment, the second extrusion passage 120 may be located behind the core portion 140.
[0039] Furthermore, according to one embodiment of the present disclosure, at least one wire insertion opening 130 may be formed in the first die 100. The wire insertion opening 130 performs the function of inserting a wire into the interior of the extruded material. In one embodiment, the wire insertion opening 130 may be formed between the first extrusion passage 110 and the second extrusion passage 120. Accordingly, the extruded material that has passed through the first extrusion passage 110 and the second extrusion passage 120 will be joined to each other while enclosing the wire to form an extruded material, and the wire can be easily inserted into the interior of the extruded material.
[0040] Referring to Figure 5(b), the outlet 110e of the first extrusion path 110 can form an inclined surface 110s in the direction toward the wire insertion port 130. As a result, the extruded material can be easily joined, preventing defects.
[0041] Furthermore, the outlet 120e of the second extrusion passage 120 may be formed in a direction toward the wire insertion port 130. Specifically, the first extrusion passage 110, the second extrusion passage 120, and the core portion 140 are arranged based on the shape of the extruded material, the wire insertion port 130 is positioned between the first extrusion passage 110 and the second extrusion passage 120 so that a wire is inserted into the interior of the extruded material, the second extrusion passage 120 is located behind the core portion 140, and the outlet of the second extrusion passage 120 may be positioned in a direction toward the wire insertion port 130 from behind the core portion 140.
[0042] On the other hand, in a preferred embodiment of the present disclosure, between the adjacent wire insertion openings 130 of the inclined surface 110s, the extrusion direction D e A valley of a predetermined width can be formed along this. Consequently, the efficiency of drawing the extruded material between the wires increases, and defects that may occur during wire insertion can be prevented.
[0043] Figure 6 is a cross-sectional view showing the internal structure of a first die and a second die according to one embodiment of the present disclosure.
[0044] The second die 200 performs the function of shaping the cross-sectional shape of the extruded material that is pushed out and discharged. For this purpose, a space may be formed in the second die 200 for the extruded material to fuse together. Referring to Figure 6, a groove 210, a fusion section 220, a core fixing section 230, and a third extrusion passage 240 may be formed in the second die 200.
[0045] The groove 210 provides a space where the extruded material that has passed through the first extrusion passage 110 and the extruded material that has passed through the second extrusion passage 120 merge. In one embodiment, the groove 210 is formed with a width corresponding to at least the overall width of the first extrusion passage 110 in the extrusion direction, and is configured to connect with the first extrusion passage 110 and the second extrusion passage 120 when the first die 100 and the second die 200 come into contact.
[0046] The fusion section 220 is configured to connect to the front of the groove section 210 and provides a space for the extruded material to fuse together. In the fusion section 220, the extruded material that has passed through the first extrusion passage 110 and the extruded material that has passed through the second extrusion passage 120 are fused together, and a wire can be inserted into the interior.
[0047] The core fixing portion 230 performs the function of fixing the core portion 140, where the aforementioned core portion 140 is positioned. In one embodiment, the core fixing portion 230 is positioned in a position corresponding to the core portion 140, and for this purpose, a bearing portion protruding in the circumferential direction is formed on the core portion 140, and by having the bearing portion placed on the core fixing portion 230, the core fixing portion 230 can support the core portion 140 against the pressure applied to the core portion 140 during extrusion.
[0048] The third extrusion passage 240 functions as a passage through which the extruded material fused in the fusion section 220 is discharged as an extruded material. In one embodiment, the third extrusion passage 240 penetrates the second die 200 along the extrusion direction and may have a cross-sectional shape corresponding to the shape of the outer surface of the extruded material.
[0049] According to one embodiment of the present disclosure, a lightweight extruded material can be manufactured using a light metal such as an aluminum alloy, which is reinforced with wires for added strength and can be used in parts requiring lightness, high elasticity, and high strength, such as vehicle bumper beams.
[0050] Although the present disclosure has been described above with reference to specific components and limited embodiments, these embodiments are provided only to aid in a more general understanding of the present disclosure, and the disclosure is not limited thereto. A person with ordinary skill in the art to which the present disclosure belongs can make various modifications and variations from this description. Therefore, the concept of this disclosure should not be limited to the embodiments described above, and it can be said that all modifications equivalent to or equivalent to the claims described below, as well as the claims described below, fall within the scope of the concept of this disclosure. [Explanation of Symbols]
[0051] 100: First die 110: 1st extrusion path 120:Second extrusion path 130: Wire insertion port 140: Core 200: Second die
Claims
1. An extrusion apparatus for manufacturing hollow extruded material, It includes a first die and a second die positioned in front of the first die along the extrusion direction, The first die has a first extrusion path formed through it along the extrusion direction, It has a second extrusion passage formed at a distance from the first extrusion passage and penetrating along the extrusion direction, and at least one wire insertion port formed between the first extrusion passage and the second extrusion passage, The wire is configured to be inserted into the interior of the extruded material through at least one wire insertion opening. An extrusion apparatus in which the wire is made of a material with higher rigidity than the extruded material.
2. The extrusion apparatus according to claim 1, wherein the outlet of the first extrusion path has an inclined surface in the direction toward the wire insertion port.
3. The first die further includes a core portion having a cross-section perpendicular to the extrusion direction that corresponds to the hollow shape of the extruded material, The second extrusion path is located behind the core portion. The extrusion apparatus according to claim 1, wherein the outlet of the second extrusion path is formed to face the at least one wire insertion port.
4. The extrusion apparatus according to claim 1, wherein the first extrusion path is formed in a plurality along the circumferential direction of the first die.
5. The extruder according to claim 3, wherein the extruded material is formed to include at least one rib inside the hollow interior.
6. The extrusion apparatus according to claim 5, wherein a gap is formed in the core portion at a position corresponding to at least one rib.
7. The extrusion apparatus according to claim 1, wherein the second die has a third extrusion passage that is connected to the first extrusion passage and the second extrusion passage of the first die and penetrates through along the extrusion direction.
8. The extrusion apparatus according to claim 1, wherein a valley of a predetermined width is formed between at least one adjacent wire insertion port along the extrusion direction.