KR20080047067A - Ejecting structure for a boss at an injection molding product - Google Patents

Ejecting structure for a boss at an injection molding product Download PDF

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Publication number
KR20080047067A
KR20080047067A KR1020060116938A KR20060116938A KR20080047067A KR 20080047067 A KR20080047067 A KR 20080047067A KR 1020060116938 A KR1020060116938 A KR 1020060116938A KR 20060116938 A KR20060116938 A KR 20060116938A KR 20080047067 A KR20080047067 A KR 20080047067A
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South Korea
Prior art keywords
boss
pin
ejecting
fixed
insert
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KR1020060116938A
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Korean (ko)
Inventor
손영수
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현대자동차주식회사
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Priority to KR1020060116938A priority Critical patent/KR20080047067A/en
Publication of KR20080047067A publication Critical patent/KR20080047067A/en

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    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B29C45/401—Ejector pin constructions or mountings
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B29C2045/4036—Ejector constructions; Ejector operating mechanisms driven by a screw and nut mechanism
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C2045/4492—Removing or ejecting moulded articles for undercut articles preventing damage or deformation of undercut articles during ejection

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

Abstract

A structure for ejecting a boss of an injection molding product is provided to improve durability by installing an ejector pin for directly transmitting the motion of an ejector plate to a boss ejecting pin. A structure for ejecting a boss of an injection molding product comprises a boss ejecting pin(5), an insert pin(7), and an ejector pin(11). The boss ejecting pin is slid along the product ejecting direction at a boss forming portion of a driving template(1) to be contacted with the front end of a boss. The insert pin fixed on the driving template forms a hollow part of the boss to be inserted through the hollow part of the boss ejecting pin. The ejector pin has one end connected to the boss ejecting pin through the insert pin, and the other end fixed on an ejector plate(9). The insert pin consists of an insertion pin part(13) inserted through the hollow part of the boss ejecting pin, and a fixing part(15) supporting the lower part of the boss ejecting pin. The fixing part has the upper part fixed by an engaging edge(17) and the lower part fixed by a pipe plug(19) screw combined to the driving template.

Description

사출 금형 제품 보스부 취출구조{ejecting structure for a boss at an injection molding product}Injection structure for a boss at an injection molding product

도 1은 종래 기술에 의한 사출 금형 제품 보스부 취출구조를 설명한 도면,1 is a view for explaining the injection mold product boss ejecting structure according to the prior art,

도 2는 본 발명에 따른 사출 금형 제품 보스부 취출구조를 설명한 도면이다.2 is a view for explaining an injection mold product boss ejecting structure according to the present invention.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1; 가동형판 3; 보스One; Movable template 3; boss

5; 보스이젝팅핀 7; 인서트핀5; Boss ejecting pin 7; Insert pin

9; 밀판 11; 밀핀9; Wheat 11; Milpin

13; 삽입핀부 15; 고정부13; Insertion pin 15; Fixture

17; 걸림턱 19; 파이프플러그17; Jam jaw 19; Pipe plug

21; 다울핀 21; Doulpin

본 발명은 사출 금형 제품 보스부 취출구조에 관한 것으로서, 보다 상세하게는 사출 금형으로 제작되는 제품에 형성되는 보스부를 금형으로부터 취출하는 기 술에 관한 것이다.The present invention relates to an injection mold product boss ejecting structure, and more particularly to a technique for ejecting the boss portion formed in the product produced by the injection mold from the mold.

보스는 다른 부품들이 스크류 등으로 장착될 수 있도록 하는 등의 목적으로 만들어지는 구조물로서, 통상 중앙에는 중공부를 구비하고, 보스의 옆부분에는 다수의 리브를 일체로 형성하여 보스를 보강할 수 있는 구조를 가지고 있다.The boss is a structure that is made for the purpose of allowing other parts to be mounted with a screw, etc., generally having a hollow portion in the center, and a structure capable of reinforcing the boss by integrally forming a plurality of ribs on the side of the boss. Have

상기와 같은 보스는 사출 성형 후 제품을 금형으로부터 취출할 때, 금형에서 잘 빠지지 않기 때문에 별도의 취출구조를 필요로 하는 경우가 많다. The boss as described above often requires a separate takeout structure because it does not fall out of the mold when taking out the product from the mold after injection molding.

도 1은 종래 기술에 의한 사출 금형 제품 보스부 취출구조를 설명한 것으로서, 중공의 슬리브(500)를 파이프플러그(502)를 이용해서 밀판(504)에 고정시키고, 슬리브(500)의 중공부에 슬리브핀(506)을 끼워넣고, 슬리브핀(506)은 파이프플러그(502)에 의해 설치판(508)에 고정되며, 상기 슬리브핀(506)의 회전을 방지하도록 다울핀(510)이 슬리브핀(506)과 설치판(508) 사이에 끼워지는 구조이다.1 is a view illustrating a conventional ejection structure of an injection mold product boss part. The hollow sleeve 500 is fixed to the plate 504 using a pipe plug 502, and the sleeve is hollowed out of the sleeve 500. Insert the pin 506, the sleeve pin 506 is fixed to the mounting plate 508 by a pipe plug 502, the dowel pin 510 is fixed to the sleeve pin (510) to prevent rotation of the sleeve pin 506 506 and the mounting plate 508 is a structure fitted.

상기와 같이 구성된 구조에서는 상기 설치판(508)은 성형기에 고정되어 있으며, 성형기에서 상기 밀판(504)을 밀어주게 되면 밀판(504)의 이젝팅이 시작된다.In the structure configured as described above, the mounting plate 508 is fixed to the molding machine, and when the pressing plate 504 is pushed in the molding machine, the ejecting of the pressing plate 504 starts.

상기 밀판(504)은 이젝팅시에 상기 슬리브(500)와 함께 상측으로 이동하고, 상기 슬리브핀(506)은 설치판(508)에 고정되어 있어서 움직이지 않는다. 따라서, 슬리브(500)가 상측으로 이동하면서 제품의 보스부를 상기 슬리브(500)핀으로부터 이탈시켜서 제품을 완전히 취출해 낼 수 있도록 하는 것이다.The sealing plate 504 moves upward with the sleeve 500 when ejecting, and the sleeve pin 506 is fixed to the mounting plate 508 and does not move. Therefore, the sleeve 500 moves upward so that the boss portion of the product is separated from the sleeve 500 pin so that the product can be completely taken out.

그런데, 상기 보스(512)는 그 자체의 직경이 수 mm이내로 작고, 보스(512) 내부의 중공부의 직경은 이보다 더 작게 마련이므로, 상기 슬리브(500)와 슬리브핀(506)은 직경이 수 mm이내이며, 길이는 대체로 1m 정도에 이르게 되므로, 상기 슬리브(500)와 슬리브핀(506)은 그 가공이 어렵고 내구성이 취약한 문제점이 있다.However, since the diameter of the boss 512 itself is smaller than a few mm and the hollow part inside the boss 512 is smaller than this, the sleeve 500 and the sleeve pin 506 may have a diameter of several mm. Since the length is approximately 1m, the sleeve 500 and the sleeve pin 506 are difficult to process and have a weak durability.

특히, 상기 슬리브(500)는 내부가 중공으로 이루어져 있으므로 그 가공성이 매우 떨어지는 단점을 가지고 있다.In particular, the sleeve 500 has a disadvantage that the workability is very poor because the inside is made of hollow.

본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 종래의 슬리브와 슬리브핀의 가공성 및 내구성 등에 영향을 받지 않고, 용이한 가공성과 보다 향상된 튼튼한 내구성을 갖춘 사출 금형 제품 보스부 취출구조를 제공함에 그 목적이 있다.The present invention has been made to solve the problems described above, without being affected by the processability and durability of the conventional sleeve and sleeve pin, and the injection mold product boss ejecting structure having easy processability and improved durable durability The purpose is to provide.

상기한 바와 같은 목적을 달성하기 위한 본 발명 사출 금형 제품 보스부 취출구조는 Injection mold product boss ejecting structure of the present invention for achieving the above object is

가동형판의 보스형성부위에 제품취출방향을 따라 슬라이딩 가능하도록 설치되어 제품의 보스 선단에 접촉하도록 된 보스이젝팅핀과;A boss ejecting pin installed on the boss forming portion of the movable plate to be slidable along the product ejection direction to contact the boss tip of the product;

상기 보스이젝팅핀의 중공부를 통하여 삽입됨으로써 상기 보스의 중공부를 형성하도록 상기 가동형판에 고정되는 인서트핀과;An insert pin fixed to the movable die to form a hollow portion of the boss by being inserted through the hollow portion of the boss ejecting pin;

일단이 상기 인서트핀을 관통하여 상기 보스이젝팅핀에 연결되고 타단은 밀판에 고정되는 밀핀;A mill pin whose one end is connected to the boss ejecting pin through the insert pin and the other end is fixed to the mill plate;

을 포함하여 구성된 것을 특징으로 한다.Characterized in that configured to include.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 2를 참조하면, 본 발명 실시예는 가동형판(1)의 보스형성부위에 제품취출방향을 따라 슬라이딩 가능하도록 설치되어 제품의 보스(3) 선단에 접촉하도록 된 보스이젝팅핀(5)과; 상기 보스이젝팅핀(5)의 중공부를 통하여 삽입됨으로써 상기 보스(3)의 중공부를 형성하도록 상기 가동형판(1)에 고정되는 인서트핀(7)과; 일단이 상기 인서트핀(7)을 관통하여 상기 보스이젝팅핀(5)에 연결되고 타단은 밀판(9)에 고정되는 밀핀(11)을 포함하여 구성된다.2, an embodiment of the present invention is a boss ejecting pin (5) installed on the boss forming part of the movable die (1) to be slidable along the product extraction direction to contact the tip of the boss (3) of the product; An insert pin (7) fixed to the movable die (1) to be inserted through the hollow portion of the boss ejecting pin (5) to form the hollow portion of the boss (3); One end penetrates through the insert pin 7 and is connected to the boss ejecting pin 5, and the other end includes a mill pin 11 fixed to the mill plate 9.

상기 인서트핀(7)은 상기 보스이젝팅핀(5)의 중공부를 통해 삽입되는 삽입핀부(13)와, 상기 삽입핀부(13)가 일체로 돌출되고 상기 밀핀(11)이 관통되며 상기 보스이젝팅핀(5)의 하측을 지지하는 고정부(15)로 이루어지고, 상기 고정부(15)의 상측은 상기 가동형판(1)에 형성된 걸림턱(17)에 의해 고정되고, 상기 고정부(15)의 하측은 상기 가동형판(1)에 나사결합되는 파이프플러그(19)에 의해 고정되도록 하였다.The insert pin (7) is inserted through the hollow portion of the boss ejecting pin (5) and the insertion pin 13, the insertion pin 13 is integrally protruded and the mill pin 11 is penetrated through the boss ejecting pin It consists of a fixing portion 15 for supporting the lower side of (5), the upper side of the fixing portion 15 is fixed by a locking step 17 formed in the movable die (1), the fixing portion 15 The lower side was to be fixed by a pipe plug 19 screwed to the movable die (1).

즉, 종래의 슬리브와 슬리브핀의 구성을 배제하고, 상기 밀판(9)의 운동력을 보스(3)를 취출하는 부위로 전달하는 매개체로 상기 밀핀(11)만을 사용하도록 한 것이다.That is, the configuration of the conventional sleeve and the sleeve pin, excluding the configuration, and to use only the mil pin 11 as a medium for transmitting the kinetic force of the contact plate (9) to the part to take out the boss (3).

상기 밀핀(11)은 상기 보스이젝팅핀(5)에 다울핀(21) 등으로 고정되어, 상기 밀판(9)의 운동력이 상기 밀핀(11)을 통해 상기 보스이젝팅핀(5)으로 직접 전달 되도록 구성하였다.The mill pin 11 is fixed to the boss ejecting pin 5 by a dowel pin 21 or the like, so that the kinetic force of the mill 9 is directly transmitted to the boss ejecting pin 5 through the mill pin 11. Configured.

상기한 바와 같은 구성에서는 상기 밀핀(11)의 굵기나 형상에 큰 제한이 없으므로, 상기 밀핀(11)의 제작이 극히 용이하고 경제적인 장점이 있다. 또한, 밀핀(11)의 내구성을 충분히 확보할 수 있다.In the configuration as described above, there is no great limitation on the thickness or shape of the mill pin 11, the manufacturing of the mill pin 11 is extremely easy and economical advantages. In addition, the durability of the mill pin 11 can be sufficiently secured.

상기 밀핀(11)의 굵기나 형상은 상기 파이프플러그(19)와 인서트핀(7)을 통과하여 상기 보스이젝팅핀(5)에 결합될 수만 있으면 족하기 때문이다.This is because the thickness or shape of the mill pin 11 only needs to be coupled to the boss ejecting pin 5 through the pipe plug 19 and the insert pin 7.

상기한 바와 같이 구성된 사출 금형 제품 보스부 취출구조는 도 2에 도시된 바와 같이, 상기 밀판(9)을 상측으로 이동시키면, 상기 밀판(9)의 운동력이 상기 밀핀(11)을 통해 상기 보스이젝팅핀(5)으로 전달되어, 상기 보스이젝팅핀(5)은 상기 가동형판(1)에 대하여 상측으로 상대 이동하여 제품의 보스(3)를 상측으로 밀어낸다.As shown in FIG. 2, when the injection mold product boss ejecting structure configured as described above is moved to the upper side of the mill plate 9, the kinetic force of the mill plate 9 is transferred through the mill pin 11. The boss ejecting pin 5 is moved upwardly with respect to the movable die 1 to push the boss 3 of the product upward.

이때, 상기 인서트핀(7)은 고정부(15)가 상기 가동형판(1)의 걸림턱(17)에 고정되어 상측으로 이동하지 못하고 그 위치를 그대로 유지하므로, 결과적으로 상기 보스의 중공부에서 상기 인서트핀(7)의 삽입핀부(13)가 빠져 나오게 된다.At this time, the insert pin (7) is fixed to the locking jaw 17 of the movable die (1) is fixed to the movable jaw 17 does not move upwards and maintains its position as it is, as a result in the hollow portion of the boss The insertion pin 13 of the insert pin 7 is pulled out.

상기와 같이 인서트핀(7)의 삽입핀부(13)가 상기 제품의 보스(3)로부터 완전히 빠져나오면 상기 제품을 취출해 내어 취출작업을 완료하게 된다.As described above, when the insertion pin 13 of the insert pin 7 completely exits the boss 3 of the product, the product is taken out to complete the extraction operation.

이상과 같이 본 발명에 의하면, 종래의 슬리브와 슬리브핀의 가공성 및 내구성 등에 영향을 받지 않고, 용이한 가공성과 보다 향상된 튼튼한 내구성을 가지고 사출 금형 제품의 보스를 취출할 수 있도록 한다.According to the present invention as described above, it is possible to take out the boss of the injection mold product with easy processability and improved durable durability without being affected by the processability and durability of the conventional sleeve and sleeve pin.

Claims (2)

가동형판의 보스형성부위에 제품취출방향을 따라 슬라이딩 가능하도록 설치되어 제품의 보스 선단에 접촉하도록 된 보스이젝팅핀과;A boss ejecting pin installed on the boss forming portion of the movable plate to be slidable along the product ejection direction to contact the boss tip of the product; 상기 보스이젝팅핀의 중공부를 통하여 삽입됨으로써 상기 보스의 중공부를 형성하도록 상기 가동형판에 고정되는 인서트핀과;An insert pin fixed to the movable die to form a hollow portion of the boss by being inserted through the hollow portion of the boss ejecting pin; 일단이 상기 인서트핀을 관통하여 상기 보스이젝팅핀에 연결되고 타단은 밀판에 고정되는 밀핀;A mill pin whose one end is connected to the boss ejecting pin through the insert pin and the other end is fixed to the mill plate; 을 포함하여 구성된 것을 특징으로 하는 사출 금형 제품 보스부 취출구조.Injection mold product boss ejecting structure, characterized in that configured to include. 청구항 1에 있어서,The method according to claim 1, 상기 인서트핀은 상기 보스이젝팅핀의 중공부를 통해 삽입되는 삽입핀부와, 상기 삽입핀부가 일체로 돌출되고 상기 밀핀이 관통되며 상기 보스이젝팅핀의 하측을 지지하는 고정부로 이루어지고;The insert pin comprises an insertion pin portion inserted through the hollow portion of the boss ejecting pin, and the fixing pin portion integrally protrudes, the mill pin penetrates and supports the lower side of the boss ejecting pin; 상기 고정부의 상측은 상기 가동형판에 형성된 걸림턱에 의해 고정되고, 상기 고정부의 하측은 상기 가동형판에 나사결합되는 파이프플러그에 의해 고정되는 것The upper side of the fixing part is fixed by a locking step formed in the movable die, the lower side of the fixing part is fixed by a pipe plug screwed to the movable die plate 을 특징으로 하는 사출 금형 제품 보스부 취출구조.Injection mold product ejection structure, characterized in that the injection mold.
KR1020060116938A 2006-11-24 2006-11-24 Ejecting structure for a boss at an injection molding product KR20080047067A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103707474A (en) * 2014-01-06 2014-04-09 晟扬精密模具（昆山）有限公司 Oblique pin for ejector rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103707474A (en) * 2014-01-06 2014-04-09 晟扬精密模具（昆山）有限公司 Oblique pin for ejector rod

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