WO2019022559A1 - Method for manufacturing frame structure for portable terminal - Google Patents

Method for manufacturing frame structure for portable terminal Download PDF

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Publication number
WO2019022559A1
WO2019022559A1 PCT/KR2018/008537 KR2018008537W WO2019022559A1 WO 2019022559 A1 WO2019022559 A1 WO 2019022559A1 KR 2018008537 W KR2018008537 W KR 2018008537W WO 2019022559 A1 WO2019022559 A1 WO 2019022559A1
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WO
WIPO (PCT)
Prior art keywords
frame
frame member
bracket
portable terminal
built
Prior art date
Application number
PCT/KR2018/008537
Other languages
French (fr)
Korean (ko)
Inventor
금기현
김성수
Original Assignee
(주)케이에이치바텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by (주)케이에이치바텍 filed Critical (주)케이에이치바텍
Priority to CN201880025743.0A priority Critical patent/CN110612715A/en
Publication of WO2019022559A1 publication Critical patent/WO2019022559A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/02—Aluminium

Definitions

  • the present invention relates to a method of manufacturing a frame structure for a portable terminal, and more particularly, to a method of manufacturing a frame structure for a portable terminal.
  • a portable terminal such as a smart phone may be equipped with a touch-enabled display device to perform various functions.
  • a portable terminal is becoming a large-sized and lightweight.
  • a frame which is exposed to the outside is made of a metal material so that the heat generated from the inside is effectively released, and the interior parts are protected from external impact, so that a luxurious feeling can be obtained.
  • FIG. 1 is a flowchart showing a conventional method of manufacturing a metal frame for a portable terminal.
  • a method of manufacturing a metal frame for a portable terminal comprising the steps of: (a) forming a housing frame that is exposed to the outside of a conventional portable terminal and a bracket frame formed inside the housing frame to support a display panel of the portable terminal and a main board
  • the first to eighth steps are as follows.
  • a metal material of an aluminum alloy is processed by an extrusion method to form a square pipe-shaped metal forming body having a hollow rectangular cross section and a predetermined length.
  • the square shaped metal forming body is cut at regular intervals in the longitudinal direction to form a rectangular ring-shaped housing frame.
  • a first CNC process is performed along the inner circumferential surface of the rectangular frame-shaped housing frame to form a concave / convex portion for casting casting.
  • the fourth step after the housing frame formed on the inner side of the concave-convex portion is inserted into the die-casting mold having the shape corresponding to the bracket frame, an undercate portion is formed on one side of the housing frame into which the metal material for diecasting is injected, And the underfloor portion is formed at the other side of the housing frame from which the metal material is discharged, the molten metal material is injected to the inside of the housing frame so that the under gate portion is disposed at one side, A die casting step of forming a bracket frame formed body in which a flow portion is disposed is performed.
  • the second CNC process is performed on the bracket frame formed body to remove the under gate portion and the under-over flow portion formed on one side and the other side of the bracket frame formed body.
  • the inner surface of the bracket frame formed article from which the undergate portion and the underflow portion are removed is pressed to form at least one component mounting hole.
  • the third CNC process is performed on the bracket frame formed body having the component mounting holes to complete the bracket frame.
  • an oxide film and color tone are coated on the surface of the metal frame including the housing frame and the bracket frame by an anodizing method to prevent corrosion.
  • the casting casting concavity and convexity formed by the first CNC process in the third step may be along the circumference of the inside of the rectangular frame-like housing frame to increase the bonding force with the die casting cast during the die casting process of the fourth step.
  • the front surface of the bracket frame formed body formed with the component mounting holes is machined to form a seating portion for a display panel, and a back surface of the bracket frame molded body is processed to process a tapped hole for a fastening screw .
  • Patent Document 1 Korean Patent Publication No. 10-1717469 (Apr. 17, 2017)
  • Patent Document 2 Korean Patent Publication No. 10-1717545 (Apr. 17, 2017)
  • the present invention provides a method of manufacturing a frame structure for a portable terminal that can be easily processed, shorten a processing time, and can be manufactured efficiently and economically by reducing the cost of material required. There is a purpose.
  • a method of manufacturing a frame structure for a portable terminal comprising: a press forming step of pressing a metal material to form a frame member; and a step of inserting the frame member into a die casting mold, And a die casting step of forming the metal built-in bracket integrally with the frame member by injection.
  • the press forming step forms a plurality of frame members in which receiving grooves are formed in one side
  • the die casting step is a step in which the molten metal flows into the receiving grooves of the plurality of frame members to integrally join the plurality of frame members A built-in bracket is formed.
  • An inflow space is formed between the plurality of frame members inserted into the die casting mold, and a molten metal flows into the inflow space to couple the plurality of frame members.
  • the method of manufacturing a frame structure for a portable terminal of the present invention further includes a bending step of bending at least one of the plurality of frame members after the press forming step.
  • the method of manufacturing a frame structure for a portable terminal of the present invention may further include a bending step of bending the frame member so that both ends of one frame member face each other after the press forming step.
  • the method of manufacturing a frame structure for a portable terminal according to the present invention further comprises a first step of forming concavo-convexities on the surface of the frame member after the press forming step, wherein in the die casting step, Is formed on the surface of the frame member.
  • the first irregularity forming step forms the irregularities by laser etching or chemical etching.
  • At least two first guide holes are formed in the frame member to be formed through the press forming step, and the first guide holes are formed in the die casting step when the frame member is inserted into the die casting mold, .
  • the frame member and the built-in bracket integrally formed are inserted into the injection mold to form an injection part inside the frame member in which the built- Wherein the built-in bracket is provided with a second guide hole for guiding the position of the frame member and the built-in bracket inserted into the injection mold.
  • the method of manufacturing a frame structure for a portable terminal according to the present invention can easily process, shorten the processing time, reduce the cost of material, increase productivity and secure cost competitiveness.
  • FIG. 1 is a flowchart showing a conventional method of manufacturing a metal frame for a portable terminal.
  • FIG. 2 is a flowchart schematically illustrating a method of manufacturing a frame structure for a portable terminal according to an embodiment of the present invention.
  • FIG 3 is a perspective view of a frame member formed in accordance with an embodiment of the present invention.
  • FIG. 4 is a plan view of a frame member having a first guide hole formed therein according to an embodiment of the present invention
  • FIG. 5 is a cross-sectional view of a frame member in which unevenness is formed according to an embodiment of the present invention.
  • FIG. 6 is a perspective view of a frame member and a built-in bracket integrally formed according to an embodiment of the present invention
  • FIG. 7 is a cross-sectional view of a frame member and a built-in bracket integrally formed according to an embodiment of the present invention.
  • FIG. 8 is a perspective view of a frame member, a built-in bracket, and an injection part integrally formed according to an embodiment of the present invention
  • FIG. 9 is a perspective view of a frame structure for a portable terminal manufactured according to an embodiment of the present invention.
  • the method for manufacturing a frame structure for a portable tamper includes a press forming step, a bending step, a first uneven formation step, a die casting step, a first post- An insert injection step, a secondary finishing step, and an external surface treatment step.
  • the metal material is inserted into a press die (not shown) and press-processed to mold the frame member 100.
  • a press die not shown
  • the material for forming the frame member 100 include SUS-based metals, copper alloy-based metals, Al-based metals, and titanium (Ti).
  • a receiving groove 101 is formed on one side of the frame member 100 formed through the press forming step as shown in FIG. 3, the receiving groove 101 is formed long along the longitudinal direction of the frame member 100. As shown in Fig. In the receiving groove 101, the molten metal flows in the die casting step to form the built-in bracket 200.
  • At least two first guide holes 120 are formed in the frame member 100 formed through the press forming step. It is most preferable that the two first guide holes 120 are formed at both ends of one frame member 100, but the present invention is not limited thereto and may be formed in various forms.
  • the first guide hole 120 guides the position of the frame member 100 when the frame member 100 is inserted into the die casting mold (not shown) in the die casting step.
  • a guide protrusion (not shown) corresponding to the first guide hole 120 is preferably formed in the die casting mold.
  • the entire process for molding the frame member 100 is compared with the processing of the frame member 100 through the CNC process, And the processing time can be shortened.
  • the bending step bends at least one of the plurality of frame members 100.
  • the frame member 100 is bent to one side where the receiving groove 101 is formed. That is, the surface on which the receiving groove 101 is formed, is the inside of the frame member 100.
  • a plurality of frame members 100 are required, and two frame members 100 or four frame members 100 are required according to various embodiments of the present invention.
  • both of the two frame members 100 are bent.
  • one frame member 100 may be used to fabricate the frame structure for a portable terminal of the present invention.
  • the bending step bends the frame member 100 such that both ends of one frame member 100 face each other.
  • the frame structure for a portable terminal of the present invention has a substantially rectangular shape depending on the shape of the portable terminal, and the bent portion of the frame structure is a corner of the frame structure for the portable terminal.
  • the bending step as described above can be performed using a multi-forming machine (not shown).
  • a multi-forming machine is formed by forming grooves or holes on a strip-shaped metal plate, or by bending at various angles at different angles once or several times by a plurality of forming machines, that is, punches arranged at regular intervals in the radial direction
  • punches arranged at regular intervals in the radial direction
  • such a multi-forming machine usually has a supply section for supplying a strip-shaped metal material (a frame member in the present invention) from a winding drum, a level section for serving to straighten the supplied metal material, And a plurality of forming units arranged in a radial manner to cut the metal material and to perform a plurality of forming operations such as foaming And a shaping portion for making a shape.
  • a supply section for supplying a strip-shaped metal material (a frame member in the present invention) from a winding drum, a level section for serving to straighten the supplied metal material, And a plurality of forming units arranged in a radial manner to cut the metal material and to perform a plurality of forming operations such as foaming And a shaping portion for making a shape.
  • the first concavo-convex forming step forms concavities and convexities 130 on the surface of the frame member 100. That is, the unevenness 130 is formed on the surface of the receiving groove 101.
  • the first concavo-convex forming step is for forming a microscopic interlock between the frame member 100 and the built-in bracket 200, which are integrally formed with each other.
  • the first concavo-convex forming step forms concave and convex portions 130 having a predetermined pattern shape on the surface of the receiving groove 101 of the frame member 100 to which the built-in bracket 200 is joined.
  • the irregularities 130 are formed by a laser etching method, and grooves having a predetermined depth are formed at uniform intervals by irradiating a laser beam onto the surface of the frame member 100. At this time, the depth of the groove formed in the surface of the receiving groove 101 of the frame member 100 is 150 to 200 ⁇ .
  • the first concavoconvex forming step may be performed by forming concavities and convexities 130 on the surface of the frame member 100 by a chemical etching method or by using a laser etching method and a chemical etching method, (130) may be formed.
  • the first concavity and convexity forming step as described above can easily and conveniently form the irregularities 130 of the predetermined pattern shape on the surface of the frame member 100.
  • the concavities and convexities 130 are formed on the surface of the frame member 100 through the first concavity and convexity forming step to improve the coupling force between the frame member 100 and the built-in bracket 200, The quality of the frame structure for the portable terminal including the bracket 200 can be uniformly maintained.
  • the frame member 100 is inserted into a die casting mold, and a metal melt is injected into the die casting mold to form the metal built-in bracket 200 integrally with the frame member 100, as shown in FIG. 7, the molten metal flows into the receiving groove 101 to form the built-in bracket 200 in the receiving groove 101 and the surface of the receiving groove 101 in which the built-in bracket 200 is formed
  • the concave and convex portions 130 are formed.
  • two frame members 100 are inserted into a die-casting mold.
  • an inflow space 110 may be formed between the two frame members 100 inserted into the die casting mold.
  • the molten metal for forming the built-in bracket 200 flows into the inflow space 110 and is cooled to couple the two frame members 100 together.
  • the built-in bracket 200 is integrally formed between the two frame members 100, the two frame members 100 are integrated together with the built-in bracket 200.
  • an inflow space 110 may be formed between both ends of one frame member 100.
  • the second guide hole 210 may be formed in the built-in bracket 200 through the die casting step as shown in FIG.
  • a guide hole forming step may be separately performed to form the second guide hole 210 in the built-in bracket 200.
  • the second guide hole 210 is formed in the frame member 100 and the built-in bracket 200 when the frame member 100 and the built-in bracket 200 integrally formed in the insert injection step are inserted into the injection mold Guide the location.
  • a guide protrusion (not shown) corresponding to the second guide hole 210 is formed in the injection mold .
  • the first post-machining step uses the CNC machining, etc. to perform dimensional correction, detailed shape machining, and removal of unnecessary parts.
  • the second concave-convex forming step forms concave and convex on the surface of the frame member 100 or the built-in bracket 200.
  • the concavity and convexity formed in the second concavo-convex forming step is for increasing the bonding force between the injection part 300 formed through the insert injection step and the frame member 100 made of metal or the built-in bracket 200.
  • the second irregularity forming step is the same as the first irregularity forming step, so a detailed description thereof will be omitted.
  • the frame member 100 and the built-in bracket 200 which are integrally formed, are inserted into the injection mold so that the injection member is inserted into the frame member 100, in which the built-in bracket 200 is formed, 300 are formed.
  • the second guide hole 210 is formed in the built-in bracket 200 to guide the position of the frame member 100 and the built-in bracket 200 inserted into the injection mold.
  • the secondary finishing step is performed by CNC machining, buffing, sanding, etc., to perform dimensional correction, detailed shape machining, and removal of unnecessary portions, thereby realizing the final appearance shape before the external surface treatment step as shown in Fig.
  • the exterior surface treatment step performs the surface treatment of the frame structure for the portable terminal by a physical / chemical method.
  • a surface treatment is a general method and a detailed description is omitted.
  • the method of manufacturing a frame structure for a portable terminal according to the present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the technical idea of the present invention.

Abstract

The present invention relates to a method for manufacturing a frame structure for a portable terminal and, more specifically, to a method for manufacturing a frame structure for a portable terminal allowing easy processing and the processing time to be shortened. A method for manufacturing a frame structure for a portable terminal according to the present invention comprises: a press-forming step for molding a frame member by means of press-processing a metal material; and a die-casting step for inserting the frame member into a die-casting mold and then injecting molten metal into the die-casting mold and thus forming a metal-interior bracket integrally with the frame member.

Description

휴대단말기용 프레임 구조물 제조방법Method of manufacturing frame structure for portable terminal
본 발명은 휴대단말기용 프레임 구조물 제조방법에 관한 것으로서, 보다 상세하게는 가공이 용이하고 가공시간을 단축시킬 수 있는 휴대단말기용 프레임 구조물 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a frame structure for a portable terminal, and more particularly, to a method of manufacturing a frame structure for a portable terminal.
스마트폰 등과 같은 휴대단말기는 터치 입력 가능한 디스플레이장치를 구비하여 다양한 기능을 수행할 수 있다. 이러한 휴대단말기는 대화면, 경량화되는 추세이다.A portable terminal such as a smart phone may be equipped with a touch-enabled display device to perform various functions. Such a portable terminal is becoming a large-sized and lightweight.
한편, 최근에는 내부에서 발생하는 열을 효과적으로 방출하고, 외부 충격으로부터 내부 부품을 보호하면서 고급스러운 느낌이 나도록 외부로 노출되는 프레임을 금속재질로 제작하고 있다.Meanwhile, recently, a frame which is exposed to the outside is made of a metal material so that the heat generated from the inside is effectively released, and the interior parts are protected from external impact, so that a luxurious feeling can be obtained.
도 1은 종래의 휴대단말기용 금속프레임의 제조방법을 나타내는 흐름도이다. 종래의 휴대단말기의 테두리 외관을 구성하며 외부로 노출되는 하우징프레임과 상기 하우징프레임의 테두리 내측으로 형성되어 휴대단말기의 디스플레이 패널과 메인보드를 지지하는 브라켓프레임을 포함하는 휴대단말기용 금속프레임의 제조방법은 크게 다음과 같은 제1 내지 제8단계로 이루어진다.1 is a flowchart showing a conventional method of manufacturing a metal frame for a portable terminal. There is provided a method of manufacturing a metal frame for a portable terminal, the method comprising the steps of: (a) forming a housing frame that is exposed to the outside of a conventional portable terminal and a bracket frame formed inside the housing frame to support a display panel of the portable terminal and a main board The first to eighth steps are as follows.
제1 단계는 알루미늄합금의 금속재질을 압출방식으로 가공하여 중공의 사각 단면을 가지며 일정한 길이를 갖는 사각파이프 형상의 금속성형체를 형성한다.In the first step, a metal material of an aluminum alloy is processed by an extrusion method to form a square pipe-shaped metal forming body having a hollow rectangular cross section and a predetermined length.
제2 단계는 상기 사각파이프 형상의 금속성형체를 길이방향 일정한 간격으로 절삭가공하여 사각고리형상의 하우징프레임을 형성한다.In the second step, the square shaped metal forming body is cut at regular intervals in the longitudinal direction to form a rectangular ring-shaped housing frame.
제3 단계는 상기 사각고리 형상의 하우징프레임 내측면 둘레를 따라 제1 CNC공정을 수행하여 캐스팅주물결합용 요철부를 형성한다.In the third step, a first CNC process is performed along the inner circumferential surface of the rectangular frame-shaped housing frame to form a concave / convex portion for casting casting.
제4 단계는 상기 요철부가 내측면에 형성된 하우징프레임을 상기 브라켓프레임에 대응되는 형상을 갖는 다이캐스팅금형에 삽입한 후, 다이캐스팅용 금속재료가 주입되는 상기 하우징프레임의 일측으로는 언더케이트부가 형성되고 다이캐스팅용 금속재료가 배출되는 상기 하우징프레임의 타측으로는 언더오버플로우부가 형성되는 구조를 갖도록 용융된 금속재료를 상기 하우징프레임의 내측으로 주입하여 일측으로는 상기 언더게이트부가 배치되고 타측으로는 상기 언더오버플로우부가 배치되는 브라켓프레임 성형체를 형성하는 다이캐스팅공정을 수행한다.In the fourth step, after the housing frame formed on the inner side of the concave-convex portion is inserted into the die-casting mold having the shape corresponding to the bracket frame, an undercate portion is formed on one side of the housing frame into which the metal material for diecasting is injected, And the underfloor portion is formed at the other side of the housing frame from which the metal material is discharged, the molten metal material is injected to the inside of the housing frame so that the under gate portion is disposed at one side, A die casting step of forming a bracket frame formed body in which a flow portion is disposed is performed.
제5 단계는 상기 프라켓프레임 성형체에 제2 CNC공정을 수행하여 상기 브라켓프레임 성형체의 일측 및 타측에 형성되는 언더게이트부와 언더오버플로우부를 제거한다.In the fifth step, the second CNC process is performed on the bracket frame formed body to remove the under gate portion and the under-over flow portion formed on one side and the other side of the bracket frame formed body.
제6 단계는 상기 언더게이트부와 언더오버플로우부가 제거된 브라켓프레임 성형체의 내면을 프레스 가공하여 하나 이상의 부품 장착용 홀을 형성한다.In the sixth step, the inner surface of the bracket frame formed article from which the undergate portion and the underflow portion are removed is pressed to form at least one component mounting hole.
제7 단계는 상기 부품 장착용 홀이 형성된 브라켓프레임 성형체에 제3 CNC공정을 수행하여 브라켓프레임을 완성한다.In the seventh step, the third CNC process is performed on the bracket frame formed body having the component mounting holes to complete the bracket frame.
제8단계는 상기 하우징프레임 및 브라켓프레임을 포함하는 금속프레임의 표면에 아노다이징방식으로 부식방지를 위한 산화막 및 컬러색상을 도장한다.In an eighth step, an oxide film and color tone are coated on the surface of the metal frame including the housing frame and the bracket frame by an anodizing method to prevent corrosion.
상기 제3 단계에서 제1 CNC공정에 의해 형성되는 캐스팅주물결합용 요철부는 상기 제4 단계의 다이캐스팅공정시 주입되는 다이캐스팅용 주물과 결합력을 높일 수 있도록 상기 사각고리형상의 하우징프레임 내측면 둘레를 따라 오목하게 형성되는 홈 또는 볼록하게 돌출되는 돌기 형상으로 형성된다.The casting casting concavity and convexity formed by the first CNC process in the third step may be along the circumference of the inside of the rectangular frame-like housing frame to increase the bonding force with the die casting cast during the die casting process of the fourth step. A concave groove or a convexly protruding shape.
그리고 상기 제7 단계의 제3 CNC공정은 상기 부품 장착용 홀이 형성된 브라켓프레임 성형체의 전면을 가공하여 디스플레이패널용 안착부를 형성하고 상기 브라켓프레임 성형체의 배면을 가공하여 체결나사를 위한 탭홀을 가공한다.In the third CNC process of the seventh step, the front surface of the bracket frame formed body formed with the component mounting holes is machined to form a seating portion for a display panel, and a back surface of the bracket frame molded body is processed to process a tapped hole for a fastening screw .
그러나 종래의 휴대단말기용 금속프레임의 제조방법 중 하우징프레임을 형성하는 제1 내지 제3 단계는 가공 시간이 오래 걸리고 가공에 의해 절삭되는 소재의 소비량이 많아 비경제적이다.However, in the conventional method of manufacturing a metal frame for a portable terminal, since the first to third steps of forming the housing frame take a long time to process and the amount of material to be cut is large, it is uneconomical.
(선행기술문헌)(Prior art document)
(특허문헌 1) 대한민국 등록특허공보 제10-1717469호(2017.03.17.)(Patent Document 1) Korean Patent Publication No. 10-1717469 (Apr. 17, 2017)
(특허문헌 2) 대한민국 등록특허공보 제10-1717545호(2017.03.17.)(Patent Document 2) Korean Patent Publication No. 10-1717545 (Apr. 17, 2017)
본 발명은 전술한 문제점을 해결하기 위한 것으로서, 가공이 용이하고 가공시간을 단축시킬 수 있으며 소요되는 소재의 비용을 절감하여 효율적이고 경제적으로 제조할 수 있는 휴대단말기용 프레임 구조물 제조방법을 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention provides a method of manufacturing a frame structure for a portable terminal that can be easily processed, shorten a processing time, and can be manufactured efficiently and economically by reducing the cost of material required. There is a purpose.
상기 목적을 달성하기 위하여 본 발명의 휴대단말기용 프레임 구조물 제조방법은, 금속 소재를 프레스 가공하여 프레임 부재를 성형하는 프레스포밍단계 및 상기 프레임 부재를 다이캐스팅 금형에 삽입한 후 상기 다이캐스팅 금형에 금속 용탕을 주입하여 금속 내장 브라켓을 상기 프레임 부재와 일체로 형성하는 다이캐스팅단계를 포함하여 이루어진다.According to another aspect of the present invention, there is provided a method of manufacturing a frame structure for a portable terminal, the method comprising: a press forming step of pressing a metal material to form a frame member; and a step of inserting the frame member into a die casting mold, And a die casting step of forming the metal built-in bracket integrally with the frame member by injection.
그리고 상기 프레스포밍단계는 일측에 수용홈이 형성되는 복수의 프레임 부재를 성형하고, 상기 다이캐스팅단계는 복수의 상기 프레임 부재의 수용홈에 금속 용탕이 유입되어 복수의 상기 프레임 부재를 일체로 결합시키는 상기 내장 브라켓이 형성된다.Wherein the press forming step forms a plurality of frame members in which receiving grooves are formed in one side, and the die casting step is a step in which the molten metal flows into the receiving grooves of the plurality of frame members to integrally join the plurality of frame members A built-in bracket is formed.
그리고 상기 다이캐스팅 금형에 삽입되는 복수의 상기 프레임 부재 사이에는 유입공간이 형성되고, 상기 유입공간에는 금속 용탕이 유입되어 복수의 상기 프레임 부재를 결합시킨다.An inflow space is formed between the plurality of frame members inserted into the die casting mold, and a molten metal flows into the inflow space to couple the plurality of frame members.
그리고 본 발명의 휴대단말기용 프레임 구조물 제조방법은 상기 프레스포밍단계 이후, 복수의 상기 프레임 부재 중 어느 하나 이상의 프레임 부재를 절곡시키는 밴딩단계를 더 포함하여 이루어진다.The method of manufacturing a frame structure for a portable terminal of the present invention further includes a bending step of bending at least one of the plurality of frame members after the press forming step.
또한, 본 발명의 휴대단말기용 프레임 구조물 제조방법은 상기 프레스포밍단계 이후, 하나의 상기 프레임 부재의 양단이 서로 마주하도록 상기 프레임 부재를 절곡시키는 밴딩단계를 더 포함하여 이루어질 수 있다.In addition, the method of manufacturing a frame structure for a portable terminal of the present invention may further include a bending step of bending the frame member so that both ends of one frame member face each other after the press forming step.
그리고 본 발명의 휴대단말기용 프레임 구조물 제조방법은 상기 프레스포밍단계 이후, 상기 프레임 부재의 표면에 요철을 형성하는 제1 요철 형성단계를 더 포함하여 이루어지고, 상기 다이캐스팅단계에서 상기 내장 브라켓은 상기 요철이 형성되는 상기 프레임 부재의 표면에 접합되도록 형성된다.The method of manufacturing a frame structure for a portable terminal according to the present invention further comprises a first step of forming concavo-convexities on the surface of the frame member after the press forming step, wherein in the die casting step, Is formed on the surface of the frame member.
그리고 상기 제1 요철형성단계는 레이저 에칭 또는 화학적 에칭을 통해 상기 요철을 형성한다.The first irregularity forming step forms the irregularities by laser etching or chemical etching.
그리고 상기 프레스포밍단계를 통해 성형되는 상기 프레임 부재에는 적어도 두 개의 제1 가이드홀이 형성되고, 상기 제1 가이드홀은 상기 다이캐스팅단계에서 상기 프레임 부재를 상기 다이캐스팅 금형에 삽입할 때 상기 프레임 부재의 위치를 안내한다.At least two first guide holes are formed in the frame member to be formed through the press forming step, and the first guide holes are formed in the die casting step when the frame member is inserted into the die casting mold, .
그리고 본 발명의 휴대단말기용 프레임 구조물 제조방법은 상기 다이캐스팅단계 이후, 일체로 형성된 상기 프레임 부재와 내장 브라켓을 사출 금형에 삽입하여 상기 내장 브라켓이 형성되는 상기 프레임 부재의 내측에 사출부를 형성하는 인서트사출단계를 더 포함하여 이루어지고, 상기 내장 브라켓에는 상기 사출 금형에 삽입되는 상기 프레임 부재 및 내장 브라켓의 위치를 안내하기 위한 제2 가이드홀이 형성된다.In the method of manufacturing a frame structure for a portable terminal according to the present invention, after the die casting step, the frame member and the built-in bracket integrally formed are inserted into the injection mold to form an injection part inside the frame member in which the built- Wherein the built-in bracket is provided with a second guide hole for guiding the position of the frame member and the built-in bracket inserted into the injection mold.
본 발명의 휴대단말기용 프레임 구조물 제조방법은 가공이 용이하고 가공시간을 단축할 수 있으며 소요되는 소재의 비용을 절감하여 생산성을 높이고 원가경쟁력을 확보할 수 있다.The method of manufacturing a frame structure for a portable terminal according to the present invention can easily process, shorten the processing time, reduce the cost of material, increase productivity and secure cost competitiveness.
도 1은 종래의 휴대단말기용 금속프레임의 제조방법을 나타낸 흐름도.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing a conventional method of manufacturing a metal frame for a portable terminal.
도 2는 본 발명의 실시예에 따른 휴대단말기용 프레임 구조물 제조방법을 개략적으로 나타낸 흐름도.2 is a flowchart schematically illustrating a method of manufacturing a frame structure for a portable terminal according to an embodiment of the present invention.
도 3은 본 발명의 실시예에 따라 형성된 프레임 부재를 나타낸 사시도.3 is a perspective view of a frame member formed in accordance with an embodiment of the present invention.
도 4는 본 발명의 실시예에 따른 제1 가이드홀이 형성되어 있는 프레임 부재의 평면도.4 is a plan view of a frame member having a first guide hole formed therein according to an embodiment of the present invention;
도 5는 본 발명의 실시예에 따른 요철이 형성되어 있는 프레임 부재의 단면도.5 is a cross-sectional view of a frame member in which unevenness is formed according to an embodiment of the present invention.
도 6은 본 발명의 실시예에 따라 일체로 형성된 프레임 부재와 내장 브라켓의 사시도.6 is a perspective view of a frame member and a built-in bracket integrally formed according to an embodiment of the present invention;
도 7은 본 발명의 실시예에 따라 일체로 형성된 프레임 부재와 내장 브라켓의 단면도.7 is a cross-sectional view of a frame member and a built-in bracket integrally formed according to an embodiment of the present invention.
도 8은 본 발명의 실시예에 따라 일체로 형성된 프레임 부재, 내장 브라켓 및 사출부의 사시도.8 is a perspective view of a frame member, a built-in bracket, and an injection part integrally formed according to an embodiment of the present invention;
도 9는 본 발명의 실시예에 따라 제조된 휴대단말기용 프레임 구조물의 사시도.9 is a perspective view of a frame structure for a portable terminal manufactured according to an embodiment of the present invention.
이하, 첨부된 도면을 참조하여 본 발명의 휴대단말기용 프레임 구조물 제조방법에 대하여 상세히 설명한다.Hereinafter, a method of manufacturing a frame structure for a portable terminal of the present invention will be described in detail with reference to the accompanying drawings.
본 발명의 실시예에 따른 휴대다말기용 프레임 구조물 제조방법은 도 2에 도시된 바와 같이, 프레스포밍단계, 밴딩단계, 제1 요철 형성단계, 다이캐스팅단계, 1차 후가공단계, 제2 요철 형성단계, 인서트사출단계, 2차 후가공단계, 및 외장표면처리단계로 이루어진다.As shown in FIG. 2, the method for manufacturing a frame structure for a portable tamper according to an exemplary embodiment of the present invention includes a press forming step, a bending step, a first uneven formation step, a die casting step, a first post- An insert injection step, a secondary finishing step, and an external surface treatment step.
프레스포밍단계는 금속 소재를 프레스 금형(미도시)에 삽입하여 프레스 가공함으로써 프레임 부재(100)를 성형한다. 프레임 부재(100)를 성형하기 위한 소재에는 SUS 계열 금속, 동합금 계열 금속, Al 계열 금속 및 타이타늄(Ti) 등이 있다.In the press forming step, the metal material is inserted into a press die (not shown) and press-processed to mold the frame member 100. [ Examples of the material for forming the frame member 100 include SUS-based metals, copper alloy-based metals, Al-based metals, and titanium (Ti).
프레스포밍단계를 통해 성형되는 프레임 부재(100)의 일측에는 도 5에 도시된 바와 같이 수용홈(101)이 형성된다. 도 3에 도시된 바와 같이, 수용홈(101)은 프레임 부재(100)의 길이방향을 따라 길게 형성된다. 수용홈(101)에는 다이캐스팅단계에서 금속 용탕이 유입되어 내장 브라켓(200)이 형성된다.A receiving groove 101 is formed on one side of the frame member 100 formed through the press forming step as shown in FIG. 3, the receiving groove 101 is formed long along the longitudinal direction of the frame member 100. As shown in Fig. In the receiving groove 101, the molten metal flows in the die casting step to form the built-in bracket 200.
그리고 프레스포밍단계를 통해 성형되는 프레임 부재(100)에는 적어도 두 개의 제1 가이드홀(120)이 형성된다. 두 개의 제1 가이드홀(120)은 하나의 프레임 부재(100)의 양단에 형성되는 것이 가장 바람직하지만, 이에 한정되지 않고 다양한 형태로 형성될 수 있다. 이러한 제1 가이드홀(120)은 다이캐스팅단계에서 프레임 부재(100)를 다이캐스팅 금형(미도시)에 삽입할 때 프레임 부재(100)의 위치를 안내한다. 이와 같이 다이캐스팅 금형 내에 삽입되는 프레임 부재(100)의 위치를 안내하기 위하여 다이캐스팅 금형 내부에는 제1 가이드홀(120)에 대응되는 가이드돌기(미도시)가 형성되는 것이 바람직하다.At least two first guide holes 120 are formed in the frame member 100 formed through the press forming step. It is most preferable that the two first guide holes 120 are formed at both ends of one frame member 100, but the present invention is not limited thereto and may be formed in various forms. The first guide hole 120 guides the position of the frame member 100 when the frame member 100 is inserted into the die casting mold (not shown) in the die casting step. In order to guide the position of the frame member 100 inserted into the die-casting mold, a guide protrusion (not shown) corresponding to the first guide hole 120 is preferably formed in the die casting mold.
상술한 바와 같이 프레스포밍단계를 통해 프레임 부재(100)를 성형함으로써, 프레임 부재(100)를 성형하기 위한 전체 공정을 CNC공정을 통해 프레임 부재(100)를 가공하는 것과 비교하여 소비되는 소재의 비용을 절감할 수 있고 가공시간을 단축시킬 수 있다.As described above, by molding the frame member 100 through the press forming step, the entire process for molding the frame member 100 is compared with the processing of the frame member 100 through the CNC process, And the processing time can be shortened.
밴딩단계는 복수의 프레임 부재(100) 중 어느 하나 이상의 프레임 부재(100)를 절곡시킨다. 이때, 프레임 부재(100)는 수용홈(101)이 형성되어 있는 일측으로 절곡된다. 즉 수용홈(101)이 형성되어 있는 면이 프레임 부재(100)의 내측이 된다. 본 발명의 휴대단말기용 프레임 구조물을 제작하기 위해서는 복수의 프레임 부재(100)가 필요하며, 본 발명의 다양한 실시예에 따라 두 개의 프레임 부재(100) 또는 네 개의 프레임 부재(100)가 필요하다.The bending step bends at least one of the plurality of frame members 100. At this time, the frame member 100 is bent to one side where the receiving groove 101 is formed. That is, the surface on which the receiving groove 101 is formed, is the inside of the frame member 100. In order to manufacture the frame structure for a portable terminal of the present invention, a plurality of frame members 100 are required, and two frame members 100 or four frame members 100 are required according to various embodiments of the present invention.
도 3에 도시된 바와 같이, 본 발명의 실시예에서는 두 개의 프레임 부재(100)를 이용하였으며, 밴딩단계에서는 두 개의 프레임 부재(100)를 모두 절곡시킨다.As shown in FIG. 3, in the embodiment of the present invention, two frame members 100 are used, and in the bending step, both of the two frame members 100 are bent.
또한, 별도로 도시하지는 않았지만 본 발명의 휴대단말기용 프레임 구조물을 제작하기 위해서 하나의 프레임 부재(100)를 이용할 수도 있다. 이때, 밴딩단계는 하나의 프레임 부재(100)의 양단이 서로 마주하도록 프레임 부재(100)를 절곡시킨다.In addition, although not shown separately, one frame member 100 may be used to fabricate the frame structure for a portable terminal of the present invention. At this time, the bending step bends the frame member 100 such that both ends of one frame member 100 face each other.
본 발명의 휴대단말기용 프레임 구조물은 휴대단말기의 형상에 따라 대략 직사각형 형상이 되고, 밴딩단계를 통해 절곡된 부분은 휴대단말기용 프레임 구조물의 모서리 부분이 된다.The frame structure for a portable terminal of the present invention has a substantially rectangular shape depending on the shape of the portable terminal, and the bent portion of the frame structure is a corner of the frame structure for the portable terminal.
상술한 바와 같은 밴딩단계는 멀티포밍기(미도시)를 이용하여 실시할 수 있다. 일반적으로 멀티 포밍기는 띠 형상의 금속판재 상에 홈이나 구멍을 형성하거나, 방사상으로 일정한 간격을 두고 배치된 다수의 포밍기, 즉 펀치에 의해 1회 또는 수회 서로 다른 부위에서 다양한 각도로 절곡하여 형성함으로써, 다양한 모양의 자동차, 휴대폰 부품 등을 제작할 수 있다.The bending step as described above can be performed using a multi-forming machine (not shown). In general, a multi-forming machine is formed by forming grooves or holes on a strip-shaped metal plate, or by bending at various angles at different angles once or several times by a plurality of forming machines, that is, punches arranged at regular intervals in the radial direction Thus, various shapes of automobiles, mobile phone parts, and the like can be manufactured.
구체적으로 이러한 멀티포밍기는 보통 띠 형상의 금속재료(본 발명에서는 프레임 부재)를 권취드럼으로부터 공급하는 공급부, 공급되는 금속재료를 곧게 펴주는 역할을 하는 레벨부, 레벨부에서 공급되는 금속재료를 만들고자 하는 치수(길이)로 설정하여 프레스나 포밍기로 이송하는 피딩부, 금속재료에 홈이나 구멍 등을 형성하는 프레스, 또는 방사상으로 배치되는 다수 개의 포밍기로 구성되어 금속재료를 절단함과 아울러 수차례 포밍시키는 포밍부 등을 포함하는 형태로 이루어진다.Specifically, such a multi-forming machine usually has a supply section for supplying a strip-shaped metal material (a frame member in the present invention) from a winding drum, a level section for serving to straighten the supplied metal material, And a plurality of forming units arranged in a radial manner to cut the metal material and to perform a plurality of forming operations such as foaming And a shaping portion for making a shape.
제1 요철 형성단계는 도 5에 도시된 바와 같이 프레임 부재(100)의 표면에 요철(130)을 형성한다. 즉 요철(130)은 수용홈(101) 표면에 형성된다. 제1 요철 형성단계는 서로 일체로 형성되는 프레임 부재(100)와 내장 브라켓(200) 사이에 미세맞물림구조(Microscopic Interlock)를 형성하기 위한 것이다.As shown in FIG. 5, the first concavo-convex forming step forms concavities and convexities 130 on the surface of the frame member 100. That is, the unevenness 130 is formed on the surface of the receiving groove 101. The first concavo-convex forming step is for forming a microscopic interlock between the frame member 100 and the built-in bracket 200, which are integrally formed with each other.
구체적으로 제1 요철 형성단계는 내장 브라켓(200)이 접합되는 프레임 부재(100)의 수용홈(101) 표면에 일정한 패턴 형상의 요철(130)을 형성한다. 이러한 요철(130)은 레이저 에칭 방식으로 형성되며, 프레임 부재(100)의 표면에 레이저를 조사하여 일정한 깊이의 홈을 일정한 간격으로 형성한다. 이때, 프레임 부재(100)의 수용홈(101) 표면에 형성되는 홈의 깊이는 150~200㎛이다.Specifically, the first concavo-convex forming step forms concave and convex portions 130 having a predetermined pattern shape on the surface of the receiving groove 101 of the frame member 100 to which the built-in bracket 200 is joined. The irregularities 130 are formed by a laser etching method, and grooves having a predetermined depth are formed at uniform intervals by irradiating a laser beam onto the surface of the frame member 100. At this time, the depth of the groove formed in the surface of the receiving groove 101 of the frame member 100 is 150 to 200 탆.
또한, 제1 요철 형성단계는 화학 에칭 방식으로 프레임 부재(100)의 표면에 요철(130)을 형성하거나, 레이저 에칭 방식과 화학 에칭 방식을 모두 이용하는 복합 방식으로 프레임 부재(100)의 표면에 요철(130)을 형성할 수도 있다.The first concavoconvex forming step may be performed by forming concavities and convexities 130 on the surface of the frame member 100 by a chemical etching method or by using a laser etching method and a chemical etching method, (130) may be formed.
상술한 바와 같은 제1 요철 형성단계는 일정 패턴 형상의 요철(130)을 프레임 부재(100)의 표면에 쉽고 편리하게 형성할 수 있다. 그리고 제1 요철 형성단계를 통해 프레임 부재(100)의 표면에 요철(130)을 형성함으로써, 프레임 부재(100)와 내장 브라켓(200)의 결합력이 향상되고 일체로 형성된 프레임 부재(100)와 내장 브라켓(200)으로 이루어지는 휴대단말기용 프레임 구조물의 품질을 균일하게 유지할 수 있다.The first concavity and convexity forming step as described above can easily and conveniently form the irregularities 130 of the predetermined pattern shape on the surface of the frame member 100. The concavities and convexities 130 are formed on the surface of the frame member 100 through the first concavity and convexity forming step to improve the coupling force between the frame member 100 and the built-in bracket 200, The quality of the frame structure for the portable terminal including the bracket 200 can be uniformly maintained.
다이캐스팅단계는 프레임 부재(100)를 다이캐스팅 금형에 삽입한 후 다이캐스팅 금형에 금속 용탕을 주입하여, 도 6에 도시된 바와 같이 금속 내장 브라켓(200)을 프레임 부재(100)와 일체로 형성한다. 도 7에 도시된 바와 같이 다이캐스팅단계에서 금속 용탕이 수용홈(101)으로 유입되어 수용홈(101)에 내장 브라켓(200)이 형성되고, 내장 브라켓(200)이 형성되는 수용홈(101) 표면에는 요철(130)이 형성되어 있다.In the die casting step, the frame member 100 is inserted into a die casting mold, and a metal melt is injected into the die casting mold to form the metal built-in bracket 200 integrally with the frame member 100, as shown in FIG. 7, the molten metal flows into the receiving groove 101 to form the built-in bracket 200 in the receiving groove 101 and the surface of the receiving groove 101 in which the built-in bracket 200 is formed The concave and convex portions 130 are formed.
본 발명의 일 실시예로서, 두 개의 프레임 부재(100)를 다이캐스팅 금형에 삽입한다. 그리고 도 4에 도시된 바와 같이, 다이캐스팅 금형에 삽입되는 두 개의 프레임 부재(100) 사이에는 유입공간(110)이 형성될 수 있다. 유입공간(110)에는 내장 브라켓(200)을 형성하기 위한 금속 용탕이 유입되어 냉각됨으로써 두 개의 프레임 부재(100)를 서로 결합시킬 수 있다.As one embodiment of the present invention, two frame members 100 are inserted into a die-casting mold. As shown in FIG. 4, an inflow space 110 may be formed between the two frame members 100 inserted into the die casting mold. The molten metal for forming the built-in bracket 200 flows into the inflow space 110 and is cooled to couple the two frame members 100 together.
또한, 두 개의 프레임 부재(100) 사이에 내장 브라켓(200)이 일체로 형성됨으로써 두 개의 프레임 부재(100)가 내장 브라켓(200)과 함께 일체가 된다.Also, since the built-in bracket 200 is integrally formed between the two frame members 100, the two frame members 100 are integrated together with the built-in bracket 200.
본 발명의 다른 실시예로서 하나의 프레임 부재(100)를 이용할 경우, 하나의 프레임 부재(100)의 양단 사이에 유입공간(110)이 형성될 수 있다.As another embodiment of the present invention, when one frame member 100 is used, an inflow space 110 may be formed between both ends of one frame member 100.
상술한 다이캐스팅 단계를 통해 내장 브라켓(200)에는 도 6에 도시된 바와 같이 제2 가이드홀(210)이 형성될 수 있다. 또한, 다이캐스팅 단계 이후 별도로 가이드홀 형성단계를 실시하여 내장 브라켓(200)에 제2 가이드홀(210)을 형성할 수도 있다.The second guide hole 210 may be formed in the built-in bracket 200 through the die casting step as shown in FIG. In addition, after the die casting step, a guide hole forming step may be separately performed to form the second guide hole 210 in the built-in bracket 200.
이러한 제2 가이드홀(210)은 인서트사출단계에서 일체로 형성된 프레임 부재(100)와 내장 브라켓(200)을 사출 금형(미도시)에 삽입할 때 프레임 부재(100) 및 내장 브라켓(200)의 위치를 안내한다. 이와 같이 사출 금형 내에 삽입되는 프레임 부재(100) 및 내장 브라켓(200)의 위치를 안내하기 위하여 사출 금형 내부에는 제2 가이드홀(210)에 대응되는 가이드돌기(미도시)가 형성되는 것이 바람직하다.The second guide hole 210 is formed in the frame member 100 and the built-in bracket 200 when the frame member 100 and the built-in bracket 200 integrally formed in the insert injection step are inserted into the injection mold Guide the location. In order to guide the position of the frame member 100 and the built-in bracket 200 inserted into the injection mold, a guide protrusion (not shown) corresponding to the second guide hole 210 is formed in the injection mold .
1차 후가공단계는 CNC가공 등을 이용하여 치수 보정, 세부 형상 가공, 불필요한 부위의 제거 등을 실시한다.The first post-machining step uses the CNC machining, etc. to perform dimensional correction, detailed shape machining, and removal of unnecessary parts.
제2 요철 형성단계는 프레임 부재(100) 또는 내장 브라켓(200)의 표면에 요철을 형성한다. 제2 요철 형성단계에서 형성되는 요철은 인서트사출단계를 통해 형성되는 사출부(300)와 금속 재질인 프레임 부재(100) 또는 내장 브라켓(200)과의 결합력을 높이기 위한 것이다. 제2 요철 형성단계는 제1 요철 형성단계와 동일하므로 구체적인 설명은 생략한다.The second concave-convex forming step forms concave and convex on the surface of the frame member 100 or the built-in bracket 200. The concavity and convexity formed in the second concavo-convex forming step is for increasing the bonding force between the injection part 300 formed through the insert injection step and the frame member 100 made of metal or the built-in bracket 200. The second irregularity forming step is the same as the first irregularity forming step, so a detailed description thereof will be omitted.
인서트사출단계는 일체로 형성된 프레임 부재(100)와 내장 브라켓(200)을 사출 금형에 삽입하여 도 8에 도시된 바와 같이 내장 브라켓(200)이 형성되는 프레임 부재(100)의 내측에 사출부(300)를 형성한다. 이때, 전술한 바와 같이 내장 브라켓(200)에는 제2 가이드홀(210)이 형성되어 사출 금형에 삽입되는 프레임 부재(100) 및 내장 브라켓(200)의 위치를 안내한다.In the insert injection step, the frame member 100 and the built-in bracket 200, which are integrally formed, are inserted into the injection mold so that the injection member is inserted into the frame member 100, in which the built-in bracket 200 is formed, 300 are formed. At this time, the second guide hole 210 is formed in the built-in bracket 200 to guide the position of the frame member 100 and the built-in bracket 200 inserted into the injection mold.
2차 후가공단계는 CNC가공, 버핑, 샌딩 등으로 치수 보정, 세부 형상 가공 및 불필요한 부위를 제거하는 가공을 하여 도 9에 도시된 바와 같이 외장표면처리단계 전 최종적인 외관 형상을 구현한다.The secondary finishing step is performed by CNC machining, buffing, sanding, etc., to perform dimensional correction, detailed shape machining, and removal of unnecessary portions, thereby realizing the final appearance shape before the external surface treatment step as shown in Fig.
외장표면처리단계는 물리/화학적인 방법으로 휴대단말기용 프레임 구조물의 표면처리를 실시한다. 이러한 표면처리는 일반적인 방법으로 자세한 설명은 생략한다.The exterior surface treatment step performs the surface treatment of the frame structure for the portable terminal by a physical / chemical method. Such a surface treatment is a general method and a detailed description is omitted.
본 발명에 따른 휴대단말기용 프레임 구조물 제조방법은 전술한 실시예에 국한되지 않고 본 발명의 기술사상이 허용되는 범위 내에서 다양하게 변형하여 실시할 수 있다.The method of manufacturing a frame structure for a portable terminal according to the present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the technical idea of the present invention.

Claims (1)

  1. 금속 소재를 프레스 가공하여 복수의 프레임 부재를 성형하는 프레스포밍단계;A press forming step of forming a plurality of frame members by pressing a metal material;
    복수의 상기 프레임 부재 중 어느 하나 이상의 프레임 부재를 절곡시키는 벤딩단계; 및A bending step of bending at least one of the plurality of frame members; And
    상기 프레임 부재를 다이캐스팅 금형에 삽입한 후 상기 다이캐스팅 금형에 금속 용탕을 주입하여 금속의 내장 브라켓을 상기 프레임 부재와 일체로 형성하는 다이캐스팅단계를 포함하여 이루어지고,And a die casting step of inserting the frame member into a die casting mold and then injecting a molten metal into the die casting mold to integrally form a built-in bracket of the metal with the frame member,
    상기 프레스포밍단계에서는 상기 프레임 부재의 일측에 상기 프레임 부재의 길이방향을 따라 수용홈이 형성되며,In the press forming step, a receiving groove is formed on one side of the frame member along the longitudinal direction of the frame member,
    상기 다이캐스팅단계에서는 상기 수용홈에 금속 용탕이 유입되어 상기 내장 브라켓이 형성되고, 상기 내장 브라켓은 복수의 상기 프레임 부재를 일체로 결합시키며,In the die casting step, molten metal flows into the receiving groove to form the built-in bracket, the built-in bracket integrally joins the plurality of frame members,
    상기 다이캐스팅 금형에 삽입되는 복수의 상기 프레임 부재 사이에는 유입공간이 형성되고, 상기 유입공간에는 금속 용탕이 유입되어 복수의 상기 프레임 부재를 결합시키는 것을 특징으로 하는 휴대단말기용 프레임 구조물 제조방법.Wherein an inflow space is formed between the plurality of frame members inserted into the die casting mold and a molten metal flows into the inflow space to join the plurality of frame members.
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008183591A (en) * 2007-01-30 2008-08-14 Toshiba Corp Method for producing casting and die-casting die
KR101571288B1 (en) * 2015-05-14 2015-11-24 후이저우 유-원 포유 컴퍼니 리미티드 manufacturing method of metal case for mobile terminal
KR20160149792A (en) * 2015-06-19 2016-12-28 천진엠앤씨전자유한공사 Manufacturing Method For Metal Frame of Mobile Phone
KR20170033168A (en) * 2015-09-16 2017-03-24 박희철 A frame of the mobile telecommunication terminal and manufacturing method thereof
KR20170072103A (en) * 2015-12-16 2017-06-26 에스 티 (주) Manufacture process for metal case of mobile phone

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7279023B2 (en) * 2003-10-02 2007-10-09 Materials And Electrochemical Research (Mer) Corporation High thermal conductivity metal matrix composites
MX2011002425A (en) 2008-09-05 2011-05-25 Apple Inc Handheld computing device.
CN102413210B (en) * 2011-11-24 2014-01-15 福建省石狮市通达电器有限公司 Production process of frame bracket in mobile phone
US20160261302A1 (en) * 2015-03-06 2016-09-08 ST Corporation Co., Ltd Metallic case for portable phone formed through press process and method of manufacturing the same
US10320960B2 (en) * 2015-06-19 2019-06-11 Tianjin M&C Electronics Co., Ltd. Metal frame and method of manufacturing the metal frame for the mobile communication terminal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008183591A (en) * 2007-01-30 2008-08-14 Toshiba Corp Method for producing casting and die-casting die
KR101571288B1 (en) * 2015-05-14 2015-11-24 후이저우 유-원 포유 컴퍼니 리미티드 manufacturing method of metal case for mobile terminal
KR20160149792A (en) * 2015-06-19 2016-12-28 천진엠앤씨전자유한공사 Manufacturing Method For Metal Frame of Mobile Phone
KR20170033168A (en) * 2015-09-16 2017-03-24 박희철 A frame of the mobile telecommunication terminal and manufacturing method thereof
KR20170072103A (en) * 2015-12-16 2017-06-26 에스 티 (주) Manufacture process for metal case of mobile phone

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