Aluminum profile injection joining method

Abstract

To provide an aluminum profile injection bonding method.SOLUTION: An aluminum profile injection bonding method includes: a product preparation step of manufacturing a plurality of aluminum profiles to be bonded in accordance with a product design; a mold preparation step of manufacturing a mold designed in accordance with the aluminum profiles prepared through the product preparation step; a seating step of seating the plurality of aluminum profiles to be bonded in the mold in a state of being in contact with each other; and an injection filling step of constructing the aluminum profiles to be bonded in an integrated form by filling contact portions of the aluminum profiles with an injection molded material through the mold. The aluminum profile injection bonding method can be provided in which, when manufacturing an electric vehicle battery housing, aluminum profiles with various cross-sectional structures can be easily joined and a stable joint state can be maintained, a large number of bonding or binding members can be omitted, the cost of production and construction can be significantly reduced, and the construction time can be significantly reduced.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a method for injection joining aluminum profiles, and more particularly to a method for injection joining profiles of battery housings for electric vehicles. [Background technology]

[0002] The present invention relates to a method for joining multiple aluminum profiles that make up an electric vehicle battery housing, and aims to overcome the problems associated with prior art welding methods.

[0003] The conventional welding joining method has a problem in that the aluminum profile is deformed after welding. Specifically, aluminum profiles have the property of being deformed by heat of 500 to 600 degrees Celsius, and the heat generated during welding causes thermal deformation of the aluminum profile.

[0004] For these reasons, welding multiple aluminum profiles to create a desired structure requires multiple deformation prevention members and multiple additional processes after welding to prevent welding distortion. As a result, conventional welding joining methods have the problem of making it very difficult to accurately match tolerances such as flatness and hole position. In addition, the weld bead line interferes with the mounting part, so the weld bead must be removed through a grinding process, which requires additional processes, is very fragile when it comes to matching flatness, and has a high risk of leakage.

[0005] Furthermore, in the case of the conventional welding joining method, it is very difficult to rework the product after a welding defect is discovered, and there is a problem in that the product must be disposed of.

[0006] Therefore, there is a need for a technology that can solve the above-mentioned problems of the conventional technology, simplify the steps of the conventional joining method, prevent product deformation, and fundamentally eliminate the risk of leaks. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Korean Patent Publication No. 10-1277453 (Registration Date: June 17, 2013) Summary of the Invention [Problem to be solved by the invention]

[0008] The object of the present invention is to provide an aluminum profile injection joining method that can easily join aluminum profiles having various cross-sectional structures when manufacturing an electric vehicle battery housing, maintain a stable joining state, and eliminate the need for numerous joining and binding members, thereby significantly reducing the costs involved in manufacturing and construction, and also significantly shortening the construction time. [Means for solving the problem]

[0009] To achieve this object, an aluminum profile injection joining method according to one aspect of the present invention may include a product preparation step in which a number of aluminum profiles to be joined are prepared according to a product design, a mold preparation step in which a mold designed to match the aluminum profiles prepared through the product preparation step is prepared, a seating step in which the number of aluminum profiles to be joined are seated in the mold while being in contact with each other, and an injection filling step in which an injection material is filled into contact portions of the aluminum profiles through the mold to integrally form the aluminum profiles to be joined.

[0010] In one embodiment of the present invention, the mold preparation step may include a mold gate formation step of forming a mold gate, which is structured to discharge an injection material through the mold and guide it into the aluminum profile joint, in accordance with a position where a fill hole is formed in the aluminum profile.

[0011] In one embodiment of the present invention, the injection filling step may include a side through-hole forming step of forming a through-hole in a side of the aluminum profile to guide the injection material to be integrally bound with the aluminum profile.

[0012] In one embodiment of the present invention, the injection and filling step may include a pin inserting step of integrally binding the injection molded object and the aluminum profile by inserting a pin into the through hole formed in the side through hole forming step.

[0013] In one embodiment of the present invention, the injection filling step may include a block mounting step of mounting a block inside the aluminum profile so as to form a space of a predetermined volume adjacent to the joint inside the aluminum profile. [Effects of the Invention]

[0014] As described above, the aluminum profile injection joining method of the present invention includes a product preparation step, a mold preparation step, a seating step, and an injection filling step, which perform specific processes. This allows aluminum profiles having various cross-sectional structures to be easily joined when manufacturing an electric vehicle battery housing, maintains a stable joined state, and eliminates the need for numerous joining and binding members, thereby significantly reducing manufacturing and installation costs and significantly shortening installation time. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a photograph showing an aluminum profile joining process according to the prior art; [Figure 2] 1 is a photograph showing the state of aluminum profiles joined by a conventional welding method. [Figure 3] 1 is a flowchart illustrating an aluminum profile bonding method according to an embodiment of the present invention. [Figure 4] 10 is a flowchart illustrating an aluminum profile bonding method according to yet another embodiment of the present invention. [Figure 5] This is a perspective view showing the state in which two aluminum profiles to be joined are butted together and a filling hole is formed. [Figure 6] FIG. 5 is a schematic plan view showing a state in which a number of aluminum profiles butted together are placed on a mold. [Figure 7] FIG. 7 is a schematic plan view showing the state in which the injection material is filled into the aluminum profile from the mold shown in FIG. 6. [Figure 8] This is a schematic plan view showing the state in which a block is inserted inside the aluminum profile and the injection material is filled into the aluminum profile from the mold. [Figure 9] 10 is a perspective view showing how a pin is inserted after a through hole is formed in an aluminum profile. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to this, the terms and phrases used in the specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted as meanings and concepts that correspond to the technical ideas of the present invention.

[0017] Throughout this specification, when a member is said to be located "on" another member, this includes not only when the member is in contact with the other member, but also when there is another member between the two members. Throughout this specification, when a part is said to "comprise" a certain component, this does not mean that it excludes other components, but that it may further include other components, unless otherwise specified.

[0018] FIG. 3 shows a flow chart illustrating a method for bonding aluminum profiles according to one embodiment of the present invention.

[0019] Referring to FIG. 3, the aluminum profile joining method S100 according to this embodiment includes a product preparation step S110, a mold preparation step S120, a seating step S130, and an injection and filling step S140, which perform specific processes. This allows aluminum profiles having various cross-sectional structures to be easily joined together when manufacturing an electric vehicle battery housing, maintains a stable joining state, and eliminates the need for numerous joining and binding members, thereby significantly reducing costs for manufacturing and construction, and also significantly shortening construction time.

[0020] Hereinafter, each component constituting the aluminum profile injection joining method S100 according to this embodiment will be described in detail with reference to the drawings.

[0021] FIG. 4 shows a flowchart illustrating a method for joining aluminum profiles according to another embodiment of the present invention, and FIG. 5 shows a perspective view illustrating the formation of fill holes when two aluminum profiles to be joined are butted together. FIG. 6 shows a schematic plan view illustrating the state in which a number of aluminum profiles butted together as shown in FIG. 5 are placed on a mold. FIG. 7 shows a schematic plan view illustrating the state in which an injection material is injected into the aluminum profile from the mold shown in FIG. 6. FIG. 8 shows a schematic plan view illustrating the state in which an injection material is injected into the aluminum profile from the mold with a block inserted therein. Furthermore, FIG. 9 shows a perspective view illustrating the insertion of a pin after a through hole is formed in the aluminum profile.

[0022] In the product preparation step S110 according to this embodiment, a number of aluminum profiles to be joined are prepared according to the product design.

[0023] In the mold preparation step S120 according to this embodiment, a mold designed to fit the aluminum profile prepared in the product preparation step S110 is manufactured.

[0024] Specifically, the mold preparation step S120 may include a mold gate formation step S121, a side through-hole formation step S141, a pin insertion step S142, and a block attachment step S143. The mold gate formation step S121 of the mold preparation step S120 is a step of forming a mold gate, which guides the injection material discharged through the mold into the aluminum profile joint, in a position corresponding to a filling hole in the aluminum profile. The side through-hole formation step S141 is a step of forming a through-hole 12 in the side of the aluminum profile to guide the injection material so that it is integrated with the aluminum profile, as shown in FIGS. 6 and 9. The pin insertion step S142 is a step of inserting a pin 30 into the through-hole formed in the side through-hole formation step S141 to integrate the injection material and the aluminum profile, as shown in FIG. 9. In the block mounting step S143, as shown in FIG. 8, a block 40 is mounted inside the aluminum profile so as to form a space of a predetermined volume adjacent to the joint inside the aluminum profile.

[0025] In the step of placing (S130) according to this embodiment, a mold designed to fit the aluminum profile prepared in the step of preparing (S110) is manufactured.

[0026] In the injection filling step S140 according to this embodiment, an injection material is filled into the contact portion of the aluminum profiles through a mold, thereby integrally forming the joined aluminum profiles.

[0027] As described above, according to the aluminum profile injection joining method of the present invention, by including a product preparation step S110, a mold preparation step S120, a seating step S130, and an injection filling step S140 in which specific processes are performed, it is possible to provide an aluminum profile injection joining method S100 that can easily join aluminum profiles having various cross-sectional structures when manufacturing an electric vehicle battery housing, maintain a stable joined state, and omit the need for numerous joining and binding members, thereby significantly reducing costs for manufacturing and construction, and further significantly shortening construction time.

[0028] Although the foregoing detailed description of the present invention has described only specific embodiments thereof, it should be understood that the present invention is not limited to the specific forms set forth in the detailed description, but rather includes all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention as defined by the appended claims.

[0029] In other words, the present invention is not limited to the specific embodiments and explanations described above, and various modifications can be made by anyone having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications are within the scope of protection of the present invention. [Explanation of symbols]

[0030] S100: Aluminum profile injection joining method S110: Product preparation stage S120: Mold preparation stage S121: Mold gate formation stage S130: Landing stage S140: Injection filling stage S141: Side through hole formation step S142: Pin insertion stage S143: Block installation stage 10: Aluminum profile 11:Filling hole 12:Through hole 20: Mold 30: Pin 40: Block 50: Projectile

Claims

1. A product preparation step S110 in which a number of aluminum profiles to be joined are prepared according to a product design; a mold preparation step S120 in which a mold designed to fit the aluminum profile prepared through the product preparation step S110 is prepared; A step S130 of placing a plurality of aluminum profiles to be joined in a mold while they are in contact with each other; and The method includes an injection filling step S140 of filling a joint portion of the aluminum profile through a mold with an injection molding fluid that has fluidity at a temperature lower than 500 degrees and solidifies at room temperature, and integrally forming the aluminum profile by solidifying the injection molding fluid; Forming injection holes for injection fluid in the aluminum profiles in a state where the aluminum profiles to be joined are butted against each other, and placing all the aluminum profiles in a mold in a state where they are butted against each other; forming a mold gate in the mold, which serves as an inlet for the injection fluid, in alignment with the position of the filling hole in the aluminum profile; The fluid injection enters the mold through the mold gate, then fills the aluminum profile through the filling hole in the aluminum profile, and is guided to the joining portion of the adjacent aluminum profiles that are butted together, whereupon the fluid solidifies to join the adjacent aluminum profiles together. An aluminum profile injection joining method characterized by:

2. The injection filling step S140 includes: a side through-hole forming step (S141) of forming a through-hole in a side of the aluminum profile to guide the fluid injection into the aluminum profile; and a pin inserting step (S142) of inserting a pin into the through hole and binding the pin and the aluminum profile together by solidifying the fluid injection material. The aluminum profile injection joining method according to claim 1.

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