KR102464856B1 - Double injection structure - Google Patents

Double injection structure Download PDF

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Publication number
KR102464856B1
KR102464856B1 KR1020220078053A KR20220078053A KR102464856B1 KR 102464856 B1 KR102464856 B1 KR 102464856B1 KR 1020220078053 A KR1020220078053 A KR 1020220078053A KR 20220078053 A KR20220078053 A KR 20220078053A KR 102464856 B1 KR102464856 B1 KR 102464856B1
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South Korea
Prior art keywords
binding
elastic piece
binding plate
plates
present
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KR1020220078053A
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Korean (ko)
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이병욱
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(주)대현하이텍
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection 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
    • B29C45/14336Coating a portion of the article, e.g. the edge of the article
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03Injection moulding apparatus
    • B29C45/04Injection moulding apparatus using movable moulds or mould halves
    • B29C45/0441Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03Injection moulding apparatus
    • B29C45/13Injection moulding apparatus using two or more injection units co-operating with a single mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection 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
    • B29C45/1418Injection 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 the inserts being deformed or preformed, e.g. by the injection pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection 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
    • B29C45/14467Joining articles or parts of a single article
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03Injection moulding apparatus
    • B29C45/13Injection moulding apparatus using two or more injection units co-operating with a single mould
    • B29C2045/135Injection moulding apparatus using two or more injection units co-operating with a single mould selectively injecting different materials in the same mould for making different articles in the same mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection 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
    • B29C45/1418Injection 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 the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C2045/14237Injection 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 the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention relates to an integrated double-injection structure made of different materials, which can realize physical robustness and improve product quality by preventing leakage since first and second members are molded from different materials having different melting points.

Description

이종 재질의 일체형 이중 사출 구조물{Double injection structure}Integral double injection structure of heterogeneous material {Double injection structure}

본 발명은 이종 재질의 일체형 이중사출 구조물에 관한 것으로, 더욱 상세하게는 제1 부재와 제2 부재가 융점이 다른 이종 재질로 성형되므로 물리적 견고함을 구현할 수 있을 뿐 아니라 누출을 방지하여 제품의 품질을 향상시키는 이종 재질의 일체형 이중 사출 구조물에 관한 것이다.The present invention relates to an integrated double-injection structure made of a heterogeneous material, and more particularly, since the first member and the second member are molded from a heterogeneous material having a different melting point, not only physical robustness can be realized but also the quality of the product by preventing leakage It relates to an integral double injection structure made of a heterogeneous material that improves the

이중사출은 2개의 수지를 사용하여 한 번의 사이클을 통해 제품을 성형하는 것으로, 2개의 사출장치와 가동판에 회전기구를 설치한 구조의 사출기 또는 코어나 슬라이드 구조를 이용하여 이중사출 가능하게 설계된 금형으로 최초 성형한 1차 사출품과 2차 캐비티와의 공간에 2차 수지를 충진하여 성형하는 것이다.Double injection uses two resins to mold a product through one cycle, and a mold designed for double injection using an injection machine with two injection devices and a rotating mechanism installed on a movable plate, or a core or slide structure. It is molded by filling the space between the first injection molded product and the secondary cavity.

이중사출은 1차측과 2차측의 캐비티가 정확히 교체되므로 형상의 제약이 적고 제품 적용의 폭이 넓어 디자인의 다양화가 가능하다. 이러한 이중사출은 한 번의 성형으로 2개 부품을 성형하므로 원가절감, 다양한 디자인의 제품 생산이 가능한 이점이 있다. 이중사출이 적용된 제품은 칫솔 손잡이, 면도기 손잡이, 전동 드라이버 손잡이 외관 등 우리 주변에서 많이 찾을 수 있다.In double injection, the cavities of the primary and secondary sides are accurately replaced, so there are few restrictions on the shape and diversification of design is possible due to the wide range of product applications. This double injection molds two parts in one molding, so it has the advantages of cost reduction and production of products of various designs. Products with double injection can be found around us, such as toothbrush handles, razor handles, and electric screwdriver handles.

그런데, 이중사출시 각각의 소재 간의 물성차이가 존재하는 바 1차 성형후 2차 수지 유입시 사출압력과 온도차로 인해 1차 사출품이 변형되거나, 1차 사출품과 2차 성형품의 사이에 누액(기포 및 액상)이 발생하는 문제점이 있었다.However, since there is a difference in physical properties between each material during double injection, when the secondary resin is introduced after the primary molding, the primary injection product is deformed due to the injection pressure and temperature difference, or liquid leaks between the primary injection product and the secondary molded product (Bubble and liquid) was generated.

등록특허공보 제2179306호(2020.11.10. 등록)Registered Patent Publication No. 2179306 (Registered on Nov. 10, 2020)

본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로서, 본 발명의 목적은 제1 부재와 제2 부재가 융점이 다른 이종 재질로 성형되므로 물리적 견고함을 구현할 수 있을 뿐 아니라 누출을 방지하여 제품의 품질을 향상시키는 이종 재질의 일체형 이중 사출 구조물을 제공함에 있다.The present invention has been devised to solve the above problems, and an object of the present invention is to realize physical robustness because the first member and the second member are molded of different materials having different melting points, and to prevent leakage of the product. It is to provide an integrated double injection structure of different materials that improves the quality of the product.

본 발명의 과제는 이상에서 언급한 과제들로 제한되지 않으며, 언급되지 않은 또 다른 과제들은 아래의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

상기 과제를 해결하기 위한 본 발명 이종 재질의 일체형 이중 사출 구조물은, 하단부가 개구된 원형의 제1 부재; 상기 제1 부재의 외주면에 일체로 사출성형되는 제2 부재; 상기 제1 부재의 하부 외주면에 외향으로 돌출형성되어 제2 부재와의 결속력을 높이는 돌기부를 포함하며, 상기 제1 부재와 제2 부재는 융점이 서로 다른 이종 재질로 형성되는 것을 특징으로 한다.The present invention for solving the above problems is an integrated double injection structure made of a heterogeneous material, a circular first member having an open lower end; a second member integrally injection-molded on the outer circumferential surface of the first member; and a protrusion formed to protrude outwardly from the lower outer circumferential surface of the first member to increase binding force with the second member, wherein the first member and the second member are formed of different materials having different melting points.

또한, 상기 제1 부재의 상부 외주면에 환형으로 형성되는 홈부; 상기 홈부에 수평으로 결합되며 2개 1조로 분리 형성되어 서로 밀착되는 결속판을 더 포함하며, 상기 홈부는 적어도 하나 이상 일정 높이 간격으로 형성되고, 상기 결속판은 상기 제1 부재와 동일한 재질로 형성되며, 제2 부재가 용융되어 채워지도록 방사상으로 형성되는 관통공이 구비되고, 상기 관통공의 어느 하나는 상부는 넓고 하부는 좁게 형성되며, 이웃하는 다른 하나는 상부는 좁고 하부는 넓게 형성되도록 반복되는 구조로 결속력을 높이게 되며, 상기 결속판의 외측 테두리부에 상,하 방향으로 돌출형성되는 결속돌부가 더 구비된다.In addition, the groove portion is formed in an annular shape on the upper outer peripheral surface of the first member; It further includes a binding plate coupled horizontally to the groove portion and formed separately in two sets to be in close contact with each other, wherein at least one groove portion is formed at regular height intervals, and the binding plate is formed of the same material as the first member. and a through hole formed radially so that the second member is melted and filled, one of the through holes has a wide upper part and a narrow lower part, and the other adjacent one is repeated so that the upper part is narrow and the lower part is wide. The binding force is increased by the structure, and binding protrusions protruding upward and downward are further provided on the outer edge of the binding plate.

또한, 상기 결속판이 밀착되는 단부에는 상기 결속판과 결속판을 서로 고정하는 고정부가 더 구비되며, 상기 고정부는, 탄성을 가지도록 외향으로 휘어지게 형성되는 탄성편; 상기 탄성편의 끝단에 결속판의 표면에 밀착되는 밀착면이 구비되며, 상기 결속판 중 일측의 결속판에 형성된 탄성편은 결속판의 상부방향에 위치하고, 타측의 결속판에 형성된 탄성편은 결속판의 하부 방향에 위치하며, 상기 탄성편의 끝단에 형성되어 탄성편이 결속판으로 원활하게 밀착되도록 안내하는 안내면이 더 구비되는 것을 특징으로 한다. In addition, a fixing part for fixing the binding plate and the binding plate to each other is further provided at an end of the binding plate in close contact with each other, and the fixing part includes: an elastic piece formed to be bent outwardly to have elasticity; The end of the elastic piece is provided with a contact surface in close contact with the surface of the binding plate, the elastic piece formed on one side of the binding plate is located in the upper direction of the binding plate, and the elastic piece formed on the other side of the binding plate is the binding plate. It is characterized in that it is further provided with a guide surface located in the lower direction of the elastic piece is formed at the end of the elastic piece to guide the elastic piece to be smoothly adhered to the binding plate.

본 발명에 의하면, 제1 부재와 제2 부재가 융점이 다른 이종 재질로 성형되므로 물리적 견고함을 구현할 수 있을 뿐 아니라 누출을 방지하여 제품의 품질을 향상시키는 효과가 있다.According to the present invention, since the first member and the second member are molded of different materials having different melting points, physical robustness can be realized, and leakage is prevented, thereby improving the quality of the product.

도 1은 본 발명 이종 재질의 일체형 이중 사출 구조물의 사시도이다.
도 2는 본 발명 이종 재질의 일체형 이중 사출 구조물의 단면구성도이다.
도 3은 본 발명 제1 부재에 결속판이 고정된 상태의 이종 재질의 일체형 이중 사출 구조물의 단면구성도이다.
도 4는 본 발명 제1 부재에 2개 1조로 된 결속판이 결합되는 상태도이다.
도 5는 본 발명 결속판의 분리사시도이다.
도 6은 본 발명 결속판에 고정부가 형성되어 결속판이 서로 고정된 상태도이다.
도 7은 본 발명인 이종 재질의 일체형 이중 사출 구조물의 누출여부를 시험하는 기밀시험 장비를 나타낸 것이다.
도 8은 본 발명인 이종 재질의 일체형 이중 사출 구조물의 누출 결과를 나타낸 것이다.
1 is a perspective view of an integrated double injection structure made of a heterogeneous material of the present invention.
Figure 2 is a cross-sectional view of the present invention of the heterogeneous material-integrated double injection structure.
Figure 3 is a cross-sectional view of the integral double injection structure of the dissimilar material in a state in which the binding plate is fixed to the first member of the present invention.
4 is a state diagram in which a binding plate of two sets is coupled to the first member of the present invention.
5 is an exploded perspective view of the binding plate of the present invention.
6 is a view showing a state in which a fixing part is formed on the binding plate of the present invention and the binding plates are fixed to each other.
7 shows a leak-tightness test equipment for testing the leak of an integral double injection structure made of a heterogeneous material according to the present invention.
8 is a view showing the leakage result of the present invention, the integrated double injection structure made of a heterogeneous material.

이하에서는 첨부된 도면을 참조하여 다양한 실시 예를 보다 상세하게 설명한다. 본 명세서에 기재된 실시 예는 다양하게 변형될 수 있다. 특정한 실시예가 도면에서 묘사되고 상세한 설명에서 자세하게 설명될 수 있다. 그러나 첨부된 도면에 개시된 특정한 실시 예는 다양한 실시 예를 쉽게 이해하도록 하기 위한 것일 뿐이다. 따라서 첨부된 도면에 개시된 특정 실시 예에 의해 기술적 사상이 제한되는 것은 아니며, 발명의 사상 및 기술 범위에 포함되는 모든 균등물 또는 대체물을 포함하는 것으로 이해되어야 한다.Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described herein may be variously modified. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, the specific embodiments disclosed in the accompanying drawings are only provided to facilitate understanding of various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it should be understood to include all equivalents or substitutes included in the spirit and scope of the invention.

제1, 제2 등과 같이 서수를 포함하는 용어는 다양한 구성요소들을 설명하는데 사용될 수 있지만, 이러한 구성요소들은 상술한 용어에 의해 한정되지는 않는다. 상술한 용어는 하나의 구성요소를 다른 구성요소로부터 구별하는 목적으로만 사용된다. Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but these elements are not limited by the above-described terms. The above terminology is used only for the purpose of distinguishing one component from another component.

본 명세서에서, "포함한다" 또는 "가지다" 등의 용어는 명세서상에 기재된 특징, 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것이 존재함을 지정하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다. 어떤 구성요소가 다른 구성요소에 "연결되어" 있다거나 "접속되어" 있다고 언급된 때에는, 그 다른 구성요소에 직접적으로 연결되어 있거나 또는 접속되어 있을 수도 있지만, 중간에 다른 구성요소가 존재할 수도 있다고 이해되어야 할 것이다. 반면에, 어떤 구성요소가 다른 구성요소에 "직접 연결되어" 있다거나 "직접 접속되어" 있다고 언급된 때에는, 중간에 다른 구성요소가 존재하지 않는 것으로 이해되어야 할 것이다. In the present specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

한편, 본 명세서에서 사용되는 구성요소에 대한 "모듈" 또는 "부"는 적어도 하나의 기능 또는 동작을 수행한다. 그리고 "모듈" 또는 "부"는 하드웨어, 소프트웨어 또는 하드웨어와 소프트웨어의 조합에 의해 기능 또는 동작을 수행할 수 있다. 또한, 특정 하드웨어에서 수행되어야 하거나 적어도 하나의 프로세서에서 수행되는 "모듈" 또는 "부"를 제외한 복수의 "모듈들" 또는 복수의 "부들"은 적어도 하나의 모듈로 통합될 수도 있다. 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한, 복수의 표현을 포함한다. Meanwhile, as used herein, a “module” or “unit” for a component performs at least one function or operation. And “module” or “unit” may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of “modules” or a plurality of “units” other than a “module” or “unit” that must be performed in specific hardware or are executed in at least one processor may be integrated into at least one module. The singular expression includes the plural expression unless the context clearly dictates otherwise.

그 밖에도, 본 발명을 설명함에 있어서, 관련된 공지 기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우, 그에 대한 상세한 설명은 축약하거나 생략한다. In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be abbreviated or omitted.

도 1은 본 발명 이종 재질의 일체형 이중 사출 구조물의 사시도이고, 도 2는 본 발명 이종 재질의 일체형 이중 사출 구조물의 단면구성도이다. 1 is a perspective view of an integrated double injection structure made of a heterogeneous material of the present invention, and FIG. 2 is a cross-sectional view of the integrated double injection structure made of a heterogeneous material of the present invention.

본 발명 이종 재질의 일체형 이중 사출 구조물은, 하단부가 개구된 원형의 제1 부재(100); 상기 제1 부재(100)의 외주면에 일체로 사출성형되는 제2 부재(200); 상기 제1 부재(100)의 하부 외주면에 외향으로 돌출형성되어 제2 부재(200)와의 결속력을 높이는 돌기부(300)를 포함하며, 상기 제1 부재(100)와 제2 부재(200)는 융점이 서로 다른 이종 재질로 형성된다. In the present invention, the heterogeneous material-integrated double injection structure includes: a circular first member 100 with an open lower end; a second member 200 integrally injection-molded on the outer circumferential surface of the first member 100; A protrusion 300 is formed to protrude outwardly from the lower outer circumferential surface of the first member 100 to increase the binding force with the second member 200 , and the first member 100 and the second member 200 have a melting point. These are formed of different heterogeneous materials.

상기 제1 부재(100)는 원통형으로 형성되면서 하단이 하부로 개구되도록 형성된다. The first member 100 is formed in a cylindrical shape and has a lower end opening downward.

상기 돌기부(300)는 제1 부재(100)의 하단부 외주면에 형성되며, 환형으로 형성되면서 일정 높이 간격을 두고 다수 개로 형성된다. The protrusions 300 are formed on the outer circumferential surface of the lower end of the first member 100, and are formed in an annular shape with a predetermined height interval therebetween.

상기 돌기부(300)는 제2 부재(200)와의 결속력을 높여 누수를 방지하기 위한 것이며, 돌기부(300)는 단면이 삼각형 또는 사각형으로 돌출 형성될 수 있으며, 제1 부재(100)의 외주면을 따라 환형으로 형성될 수 있으나, 일정 간격 이격되도록 방사상으로 형성될 수도 있다. The protrusion 300 is to increase the binding force with the second member 200 to prevent leakage, and the protrusion 300 may be formed to protrude in a triangular or quadrangular cross-section, and along the outer circumferential surface of the first member 100 . It may be formed in an annular shape, but may be formed radially so as to be spaced apart from each other by a predetermined interval.

상기 돌기부(300)는 사출 성형시 재용융되어 제2 부재(200)와 일체화된다. The protrusion 300 is re-melted during injection molding to be integrated with the second member 200 .

상기 제2 부재(200)는 제1 부재(100)와 다른 종류의 수지로 형성되어 제1 부재(100)와 일체로 인서트 성형되며, 이중 사출 구조물에 공기 또는 물을 가압시 누수가 생기지 않게 된다. The second member 200 is formed of a different kind of resin from the first member 100 and is insert-molded integrally with the first member 100, and leakage does not occur when air or water is pressed into the double injection structure. .

본 발명 이종 재질의 일체형 이중 사출 구조물은 캐비티 2개가 하나의 이동측 형반에 존재하는 형반회전 방식의 금형을 사용하여 이중사출한다. 캐비티는 제1 부재(100)를 사출성형하는 1차 캐비티와, 제2 부재(200)를 사출성형하는 2차 캐비티를 포함하는 통상의 구조이다. In the present invention, the heterogeneous material-integrated dual injection structure is double-injected using a mold of a mold rotation type in which two cavities exist in one moving-side mold. The cavity has a general structure including a primary cavity for injection molding the first member 100 and a secondary cavity for injection molding the second member 200 .

이종 재질의 일체형 이중 사출 구조물의 성형방법은 1차 캐비티 내에 수지를 충진하여 돌기부가 형성된 제1 부재(100)를 성형하고, 제1 부재(100)가 냉각되기 전에 금형을 열고 이동측에 붙어있는 그대로 회전하여 제1 부재(100)가 2차 캐비티 측에 위치되게 한 후 금형을 닫아 제1 부재가 2차 캐비티 내에 있는 상태에서 제1 부재(100)와 2차 캐비티 사이의 공간에 융점이 다른 이종의 수지를 충진하여 제1 부재(100)의 외주면에 제2 부재(200)를 사출 성형한 후 금형을 열어 취출하게 된다. The molding method of an integrated double injection structure made of a heterogeneous material is to fill the resin in the primary cavity to mold the first member 100 having a protrusion, and before the first member 100 is cooled, open the mold and attach to the moving side. After rotating as it is so that the first member 100 is positioned on the secondary cavity side, the mold is closed and the melting point is different in the space between the first member 100 and the secondary cavity in a state where the first member is in the secondary cavity After the second member 200 is injection molded on the outer circumferential surface of the first member 100 by filling different types of resin, the mold is opened and taken out.

상기 제1,2 부재(100)(200)는 폴리아미드6(PA6), 폴리아미드66(PA66), 폴리부틸렌 테레프탈레이트(PBT), 폴리옥시메틸렌 공중합체(POM)으로부터 선택될 수 있다. The first and second members 100 and 200 may be selected from polyamide 6 (PA6), polyamide 66 (PA66), polybutylene terephthalate (PBT), and polyoxymethylene copolymer (POM).

여기서 상기 폴리아미드6(PA6), 폴리아미드66(PA66), 폴리부틸렌 테레프탈레이트(PBT), 폴리옥시메틸렌 공중합체(POM)는 융점이 서로 다르며, 폴리아미드6(PA6)과 폴리아미드66(PA66)은 융점이 260℃이고, 폴리부틸렌 테레프탈레이트(PBT)는 220℃이며, 폴리옥시메틸렌 공중합체(POM)는 165℃이다. Here, the polyamide 6 (PA6), polyamide 66 (PA66), polybutylene terephthalate (PBT), and polyoxymethylene copolymer (POM) have different melting points, and polyamide 6 (PA6) and polyamide 66 ( PA66) has a melting point of 260°C, polybutylene terephthalate (PBT) has a melting point of 220°C, and polyoxymethylene copolymer (POM) has a melting point of 165°C.

상기 제1 부재(100)와 제2 부재(200)는 서로 다른 융점을 가진 이종 재질로 구성될 수 있다.The first member 100 and the second member 200 may be made of different materials having different melting points.

또한, 상기 제1 부재(100)의 상부 외주면에는 환형으로 요입되는 홈부(400)가 형성된다. In addition, a groove portion 400 concave in an annular shape is formed on the upper outer circumferential surface of the first member 100 .

상기 홈부(400) 적어도 하나 이상 일정 간격으로 형성되는 것이 바람직하다.At least one of the grooves 400 is preferably formed at regular intervals.

상기 홈부(400)에는 2개 1조로 분리 형성되어 서로 밀착되어 수평으로 결합되는 결속판(500)(500')이 구비된다. The groove portion 400 is provided with binding plates 500 and 500 ′ that are formed separately in two sets, are in close contact with each other, and are horizontally coupled.

상기 결속판(500)(500')은 동일한 재질로 형성되며, 제1 부재(100)와도 동일한 재질로 형성된다. The binding plates 500 and 500 ′ are formed of the same material, and are formed of the same material as the first member 100 .

상기 결속판(500)(500')에는 방사상으로 관통공(510)이 형성되며, 상기 관통공(510)의 어느 하나는 일측은 넓고 타측는 좁게 형성되며, 이웃하는 다른 하나는 일측은 좁고 타측은 넓게 형성되어 연속 반복되는 구조로 이루어지므로 수지가 용융되어 채워지면서 결속력이 극대화된다. A through hole 510 is formed in a radial direction in the binding plates 500 and 500 ′, and one of the through holes 510 has a wide side and a narrow side on the other side, and the other adjacent one side is narrow and the other side is narrow. Since the side is formed widely and has a structure that is continuously repeated, the bonding force is maximized as the resin is melted and filled.

상기 결속판(500)(500')의 외측 테두리부에는 외측 방향으로 결속돌부(600)가 구비되며, 상기 결속돌부(600)는 수지의 용융시 결속력을 더욱 극대화할 수 있다. A binding protrusion 600 is provided on the outer edge of the binding plates 500 and 500 ′ in an outward direction, and the binding protrusion 600 can further maximize the binding force when the resin is melted.

또한, 상기 결속판(500)(500')이 밀착되는 단부에는 상기 결속판(500)과 결속판(500')을 서로 고정하는 고정부(700)가 구비된다. In addition, a fixing part 700 for fixing the binding plate 500 and the binding plate 500 ′ to each other is provided at an end to which the binding plates 500 and 500 ′ are in close contact.

상기 고정부(700)는 결속판(500)(500)의 단부에 돌출형성되는 탄성편(710)이 구비되며, 상기 탄성편(710)은 외향으로 휘어지도록 형성되어 자체 탄성을 가지게 된다. The fixing part 700 is provided with an elastic piece 710 protruding from the ends of the binding plates 500 and 500 , and the elastic piece 710 is formed to be bent outwardly to have its own elasticity.

상기 탄성편(710)의 끝단에는 결속판(500)(500')의 표면에 밀착되는 밀착면(720)이 구비되며, 상기 밀착면(720)은 탄성편(710)의 탄성에 의해 결속판(500)(500')의 표면이 밀착되는 것이다. An end of the elastic piece 710 is provided with a contact surface 720 that is in close contact with the surfaces of the binding plates 500 and 500 ′, and the contact surface 720 is formed by the elasticity of the elastic piece 710 . The surfaces of (500) and (500') are in close contact.

상기 결속판(500)(500') 중 일측의 결속판(500)에 형성된 탄성편(710)은 결속판(500)의 일측방향에 위치하고, 타측의 결속판(500')에 형성된 탄성편(710)은 결속판(500')의 타측 방향에 위치하게 된다. An elastic piece 710 formed on one side of the binding plate 500 among the binding plates 500 and 500' is located in one direction of the binding plate 500, and an elastic piece formed on the other binding plate 500' ( 710 is positioned on the other side of the binding plate 500'.

상기 탄성편(710)의 끝단에는 상기 탄성편(710)이 결속판(500)(500')으로 원활하게 밀착되도록 안내하는 안내면(730)이 경사지게 형성되어 있다. At the end of the elastic piece 710, a guide surface 730 for guiding the elastic piece 710 to smoothly adhere to the binding plates 500 and 500' is formed to be inclined.

즉, 본 발명은 제1 부재(100)와 제2 부재(200)가 이종 재질로 인서트 성형되므로 누출현상을 방지할 수 있게 되는 것이다.That is, in the present invention, since the first member 100 and the second member 200 are insert-molded with different materials, it is possible to prevent leakage.

본 발명 이종 재질의 일체형 이중 사출 구조물은 기밀시험 장비를 통해 기밀시험을 실시할 수 있다.In the present invention, the integral double injection structure made of a heterogeneous material can be subjected to a tightness test through the airtightness test equipment.

<기밀시험 조건><Conditions for confidentiality test>

1. 기밀압력: Air 4kg/㎠1. Airtight pressure: Air 4kg/㎠

2. 가압시간: 60sec2. Pressurization time: 60sec

3. 기밀시험 온도: 상온3. Airtightness test temperature: room temperature

4. 기밀시험 방식: 수몰시험 및 기포확인4. Airtightness test method: submersion test and bubble check

5. 통과조건: 기포발생이 유무5. Passing condition: presence or absence of bubbles

도 7 내지 8에 도시된 바와 같이, 제1 부재(100)와 제2 부재(200)를 이종재질로 이종 사출 구조물을 인서트 사출하여 상기의 기밀시험 조건에서 시험한 결과, 본 발명의 이중 사출 구조물은 제1 부재(100)와 제2 부재(200)의 경계면으로 누출(LEAKAGE)이 발생하지 않는 구조임을 알 수가 있다.As shown in FIGS. 7 to 8, the first member 100 and the second member 200 are insert-injected into a heterogeneous injection-molded structure using different materials, and as a result of the test under the above airtight test conditions, the double injection structure of the present invention It can be seen that is a structure in which leakage does not occur to the interface between the first member 100 and the second member 200 .

이상에서 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였지만, 본 발명은 상술한 특정의 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 다양한 변형실시가 가능한 것은 물론이고, 이러한 변형실시들은 본 발명의 기술적 사상이나 전망으로부터 개별적으로 이해되어져서는 안 될 것이다. Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications are possible by those having the knowledge of, of course, these modifications should not be individually understood from the technical spirit or perspective of the present invention.

100: 제1 부재
200: 제2 부재
300: 돌기부
400: 홈부
500, 500': 결속판
510: 관통공
600: 결속돌부
700: 고정부
710: 탄성편
720: 밀착면
730: 안내면
100: first member
200: second member
300: protrusion
400: groove
500, 500': binding plate
510: through hole
600: binding protrusion
700: fixed part
710: elastic piece
720: contact surface
730: guide surface

Claims (3)

하단부가 개구된 원형의 제1 부재(100);
상기 제1 부재(100)의 외주면에 일체로 사출성형되는 제2 부재(200);
상기 제1 부재(100)의 하부 외주면에 외향으로 돌출형성되어 제2 부재(200)와의 결속력을 높이는 돌기부(300);
상기 제1 부재(100)의 상부 외주면에 환형으로 형성되는 홈부(400);
상기 홈부(400)에 수평으로 결합되며 2개 1조로 분리 형성되어 서로 밀착되는 결속판(500)(500');
상기 결속판(500)(500')의 외측 테두리부에 외측방향으로 돌출형성되는 결속돌부(600);
상기 결속판(500)(500')이 밀착되는 단부에는 상기 결속판(500)과 결속판(500')을 서로 고정하는 고정부(700)를 포함하며,
상기 제1 부재(100)와 제2 부재(200)는 융점이 서로 다른 이종 재질로 형성되며,
상기 홈부(400)는 적어도 하나 이상 일정 간격으로 형성되고,
상기 결속판(500)(500')은 상기 제1 부재(100)와 동일한 재질로 형성되며, 제2 부재(200)가 용융되어 채워지도록 방사상으로 형성되는 관통공(510)이 구비되고,
상기 관통공(510)의 어느 하나는 일측은 넓고 타측는 좁게 형성되며, 이웃하는 다른 하나는 일측은 좁고 타측은 넓게 형성되어 연속 반복되는 구조로 결속력을 높이게 되며,
상기 고정부(700)는,
탄성을 가지도록 외향으로 휘어지게 형성되는 탄성편(710);
상기 탄성편(710)의 끝단에 결속판(500)(500')의 표면에 밀착되는 밀착면(720)이 구비되며,
상기 결속판(500)(500') 중 일측의 결속판(500)에 형성된 탄성편(710)은 결속판(500)의 상부방향에 위치하고, 타측의 결속판(500')에 형성된 탄성편(710)은 결속판(500')의 하부 방향에 위치하며,
상기 탄성편(710)의 끝단에 형성되어 탄성편(710)이 결속판(500)(500')으로 원활하게 밀착되도록 안내하는 안내면(730)이 구비되는 것을 특징으로 하는 이종 재질의 일체형 이중 사출 구조물.
a circular first member 100 with an open lower end;
a second member 200 integrally injection-molded on the outer circumferential surface of the first member 100;
a protrusion (300) protruding outwardly from the lower outer peripheral surface of the first member (100) to increase the binding force with the second member (200);
a groove portion 400 formed in an annular shape on an upper outer circumferential surface of the first member 100;
Binding plates 500, 500' that are horizontally coupled to the groove 400 and are formed separately in two sets and are in close contact with each other;
a binding protrusion 600 protruding outwardly from the outer edge of the binding plates 500 and 500 ′;
Ends to which the binding plates 500 and 500' are in close contact include a fixing part 700 for fixing the binding plate 500 and the binding plate 500' to each other,
The first member 100 and the second member 200 are formed of different materials having different melting points,
At least one groove portion 400 is formed at regular intervals,
The binding plates 500 and 500' are formed of the same material as the first member 100, and a through hole 510 formed radially so that the second member 200 is melted and filled is provided,
One side of the through hole 510 is wide and the other side is narrow, and the other adjacent one side is narrow and the other side is wide to increase the binding force in a structure that is continuously repeated,
The fixing part 700,
an elastic piece 710 bent outwardly to have elasticity;
A contact surface 720 is provided at the end of the elastic piece 710 to be in close contact with the surface of the binding plates 500 and 500 ′,
The elastic piece 710 formed on the binding plate 500 on one side of the binding plates 500 and 500' is located in the upper direction of the binding plate 500, and the elastic piece formed on the binding plate 500' on the other side ( 710) is located in the lower direction of the binding plate 500',
Integrated double injection of heterogeneous material, which is formed at the end of the elastic piece 710 and is provided with a guide surface 730 for guiding the elastic piece 710 to smoothly adhere to the binding plates 500 and 500 ′. structure.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003532152A (en) * 2000-05-01 2003-10-28 シカ コーポレーション Baffle and reinforcement assemblies
KR20090008533A (en) * 2007-07-18 2009-01-22 박기훈 The way manufacture of pipe lateral sweral and the lateral sweral
KR20130053547A (en) * 2011-11-15 2013-05-24 오티스 엘리베이터 컴파니 Double injection molding roller for elevator
KR20140028291A (en) * 2012-08-28 2014-03-10 삼성전자주식회사 Connection member for imformation communication device
KR20160058654A (en) * 2014-11-17 2016-05-25 유승열 Retainer ring and method therof by chemical mechanical polisher
KR102179306B1 (en) 2019-04-22 2020-11-16 주식회사 서연이화 Dual injection molding mold for vehicle interior materials and Molding method of vehicle interior materials using dual injection molding mold

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003532152A (en) * 2000-05-01 2003-10-28 シカ コーポレーション Baffle and reinforcement assemblies
KR20090008533A (en) * 2007-07-18 2009-01-22 박기훈 The way manufacture of pipe lateral sweral and the lateral sweral
KR20130053547A (en) * 2011-11-15 2013-05-24 오티스 엘리베이터 컴파니 Double injection molding roller for elevator
KR20140028291A (en) * 2012-08-28 2014-03-10 삼성전자주식회사 Connection member for imformation communication device
KR20160058654A (en) * 2014-11-17 2016-05-25 유승열 Retainer ring and method therof by chemical mechanical polisher
KR102179306B1 (en) 2019-04-22 2020-11-16 주식회사 서연이화 Dual injection molding mold for vehicle interior materials and Molding method of vehicle interior materials using dual injection molding mold

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