KR920004584Y1 - Ejecting device for injection molding article - Google Patents

Ejecting device for injection molding article Download PDF

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Publication number
KR920004584Y1
KR920004584Y1 KR2019900006065U KR900006065U KR920004584Y1 KR 920004584 Y1 KR920004584 Y1 KR 920004584Y1 KR 2019900006065 U KR2019900006065 U KR 2019900006065U KR 900006065 U KR900006065 U KR 900006065U KR 920004584 Y1 KR920004584 Y1 KR 920004584Y1
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South Korea
Prior art keywords
plate
movable
fixed
undercut
stationary
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KR2019900006065U
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Korean (ko)
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KR910019879U (en
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윤헌중
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현대전자산업 주식회사
정몽헌
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Priority to KR2019900006065U priority Critical patent/KR920004584Y1/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
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
    • 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
    • B29C45/26—Moulds
    • B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/058—Undercut

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

Abstract

내용 없음.No content.

Description

사출금형의 상하 언더커트 강제취출장치Top and bottom undercut force ejection device of injection mold

제 1 도 내지 제 2 도는 본 고안이 적용된 사출금형이 단면도로서 제 1 도는 형폐(型閉) 상태 단면도.1 to 2 is a cross-sectional view of the injection mold to which the present invention is applied.

제 2 도는 형개(型開) 상태 단면도.2 is a cross-sectional view of a mold opening state.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

2 : 고정형판 4 : 가동형판2: fixed plate 4: movable plate

7 : 스트리퍼판 8 : 가동코어핀7: stripper plate 8: movable core pin

10 : 공간부 11 : 고정측 밀판10: space portion 11: fixed side sealing plate

12 : 고정측 리턴핀 13 : 고정측 이동코어핀12: fixed side return pin 13: fixed side moving core pin

본 고안은 사출금형의 언더커트 처리장치에 관한 것으로, 특히 상하 언더커츠부를 처리함에 있어 상하언더커트를 강제취출할 수 있도록 한 사출금형의 언더커트 강제 취출장치에 관한 것이다.The present invention relates to an undercut processing apparatus of an injection mold, and more particularly, to an undercut forced take-out apparatus of an injection mold, which allows the upper and lower undercuts to be forced out in processing the upper and lower undercut parts.

일반적으로 내측에 돌출 높이가 비교적 낮은 돌기나 돌조등의 언더커트부를 가지는 사출제푼을 성형함에 있어서는 돌기나 돌조에 대응하는 홈부를 가지는 가동 코어핀을 이용하여 언더커트부를 처리하고 있으며, 이와 같이 언더커츠를 처리하기 위한 코어핀이 언더커트부에 대하여 진입 후퇴하지 않고 언더커트부를 확장시키면서 취출되는 방식의 것을 언거커트 강제취출장치라고 한다.In general, in molding an injection mold having an undercut portion such as a protrusion or a protrusion having a relatively low protrusion height, the undercut portion is processed by using a movable core pin having a groove portion corresponding to the protrusion or the protrusion. The core pin for processing is taken out while expanding the undercut portion without entering and retracting with respect to the undercut portion is called an undercut forced take-out device.

그러나 종래의 언더커트강제 취출장치에 있어서는 상기 언더커트부를 가동측에서만 처리하게 되는 경우에는 제품의 취출시 먼저 제품이 고정측으로부터 취출된 상태에서 스트리퍼판을 전진시켜 가동코어핀이 탈퇴되어 언더커트부를 확장시키면서 강제 취출하는 것이므로 제품과 언더커트부의 취출에 하등의 지장을 주지않게 되지만, 언더 커트부가 상하부에 있는 제품을 성형하기 위하여는 가동측의 가동코어핀과 함께 고정측에도 고정측 이동 코어핀을 설치하는 경우에는 가동측에 설치된 가동코어핀에 의한 하부측의 언더커트부의 처리는 상술한 바와 같이 제품이 고정형판으로부터 취출된 상태에서 이루어지므로 제품의 언더커트부가 확장되면서 취출되지만 고정측에 설치된 고정코어핀은 고정형판내에 위치하고 있기 때문에 고정코어핀이 제품의 언더커트부에서 이탈하려 할때 제품의 언더커트부가 확장될 수 없게 되어 고정측에서의 상부측언더커트부의 취출은 불가능하게 된다.However, in the conventional undercut steel take-out apparatus, when the undercut portion is processed only on the movable side, when the product is taken out, the stripper plate is moved forward with the product taken out from the fixed side first, and the movable core pin is withdrawn so that the undercut portion is removed. Since it is forced out while expanding, it does not interfere with taking out the product and undercut part at all.However, in order to mold the product having the undercut part in the upper and lower parts, a fixed side moving core pin is installed on the fixed side together with the movable core pin on the movable side. In the case where the undercut portion of the lower side by the movable core pin installed on the movable side is carried out in the state that the product is taken out from the fixed plate as described above, the undercut portion of the product is taken out as it is extended, but the fixed core installed on the fixed side Since the pin is located in the fixed plate, the fixed core pin Of the under-cut portion when trying to escape from the undercut portion is not subject to expansion taking out the upper side of the undercut portion of the side of the fixed product it is impossible.

따라서 종래에는 제품의 하부측에만 언더커트부가 있는 경우에만 적용할 수 있을 뿐 상하부측에 언더커트부가 있는 경우에는 상부측의 언더커트부의 취출이 불가능하게 되어 적용할 수 없게 되는 것이었다.Therefore, in the related art, the present invention can be applied only when there is an undercut portion only on the lower side of the product, but when there is an undercut portion on the upper and lower sides, extraction of the undercut portion on the upper side becomes impossible and cannot be applied.

따라서 본 고안의 목적은 이러한 종래의 폐단을 해결하기 위한 것으로, 제품의 내측면 또는 내주면 상하부측에 돌기나 돌조와 같은 언더커트부가 있는 제품의 언더커트 처리에 있어서 가동측에 설치된 가동코어핀에 의한 하부측 언더커트부의 취출은 물론 고정측에 설치된 고정측 이동코어핀에 의한 상부측 언더커트부의 취출도 강제적으로 원활하게 수행할 수 있도록 한 사출금형의 언더커트 강제취출장치를 제공하려는 것이다.Therefore, an object of the present invention is to solve such a conventional closed end, by the movable core pin installed on the movable side in the undercut treatment of the product having an undercut portion such as protrusions or protrusions on the upper and lower sides of the inner or inner circumferential surface of the product. It is an object of the present invention to provide an undercut forced ejection device of an injection mold, which can smoothly and smoothly take out a lower side undercut portion as well as an upper side undercut portion by a fixed side moving core pin installed on the fixed side.

이러한 본 고안의 목적은 고정측에는 고정설치판과 고정형판을 설치하고, 가동측에는 가동설치판과 가동형판과 가동측 밀판과 가동측 리턴핀 및 스트리퍼판을 설치하고 가동형판에는 하측 언더커트 처리용 홈부가 형성된 가동 가동코어핀을 설치한 것에 있어서, 상기 고정설치판과 고정형판 사이에는 공간부를 형성하여 이 공간부에 고정측 밀판을 설치하여 이에 고정형판을 관통하여 스트리퍼판에 면접하는 리턴핀을 고정설치하고, 상기 고정측 밀판에는 상측 언더커트 처리용 홈부가 형성된 고정측 이동코어핀을 고정설치하여서 된 사출금형의 상하언더커트 강제 취출장치를 제공하는 것에 의하여 달성된다.The purpose of the present invention is to install a fixed mounting plate and a fixed plate on the fixed side, a movable mounting plate, a movable die plate, a movable side plate and a movable side return pin and a stripper plate on the movable side, and a groove for processing the undercut on the lower plate. In the case where the movable movable core pin is additionally formed, a space portion is formed between the fixed mounting plate and the fixed mold plate, and a fixed side tight plate is installed in the space, and the return pin is fixed to the stripper plate through the fixed mold plate. The upper and lower undercut forced take-out apparatus of the injection mold, which is provided by fixing the fixed side moving core pin having the upper undercut processing groove formed thereon, is provided.

이하 본 고안에 의한 사출금형의 상하 언더커트 강제취출 장치를 첨부도면에 도시한 실시예에 따라서 상세히 설명한다.Hereinafter, the upper and lower undercut forced ejection apparatus of the injection mold according to the present invention will be described in detail according to the embodiment shown in the accompanying drawings.

제 1 도 및 제 2 도는 본 고안을 상부관(B)측의 직경이 하부관(B')의 직경보다 작고 상하관(B)(B')의 내주면에는 돌기나 돌조와 같은 언더커트부(U)(U')를 가지는 주사기와 같은 제품(P)을 성형하는데 적용한 일예를 도시하는 것으로, 고정측에는 고정설치판(1)과 고정형판(2)를 설치하고, 가동측에는 가동설치판(3)과 가동형판(4)과 가동측 밀판(5)과 가동측리턴핀(6) 및 스트리퍼판(7)을 설치하고 가동형판(4)에는 하측 언더커트 처리용 홈부(9)가 형성된 가동코어핀(8)를 설치한 것에 있어서, 상기 고정설치판(1)과 고정형판(2) 사이에는 공간부(10)를 형성하여 이공간부(10)에 고정측 밀판(11)을 설치하여 이에 고정형판(2)을 관통하여 스트리퍼판(7)에 면접하는 리턴핀(12)를 고정설치하고, 상기 고정측 밀판(11)에는 상측 언더커트 처리용 홈부(14)가 형성된 고정측 이동코어핀(13)을 고정설치하여서 된 것이다.1 and 2 is a diameter of the upper tube (B) side is smaller than the diameter of the lower tube (B ') and the inner circumferential surface of the upper and lower tubes (B) (B') undercut portion such as protrusions or protrusions ( U) shows an example applied to molding a product P such as a syringe having a U ', wherein a fixed mounting plate 1 and a fixed mold plate 2 are provided on the fixed side, and a movable mounting plate 3 on the movable side. Movable core (4), movable side sealing plate (5), movable side return pin (6) and stripper plate (7) are installed, and movable plate (4) is provided with lower undercut groove (9) In the installation of the pin (8), the space 10 is formed between the fixed mounting plate (1) and the fixed mold plate (2) to install the fixed side mill plate (11) in this space (10) A fixed side movable nose provided with a return pin 12 fixed to the stripper plate 7 through the stationary plate 2 and in contact with the stripper plate 7, wherein the fixed side plate 11 has an upper undercut groove portion 14 formed therein. Hayeoseo to the fixed installation of the pin 13.

도면중 미설명 부호 15는 고정설치판(1)과 고정형판(2)을 연결고정하는 고정측 다리이고, 16은 가동설치판(3)과 가동현판(4)을 연결고정하는 가동측 다리이며, 17, 18은 부싱이다.In the drawings, reference numeral 15 denotes a fixed side leg for connecting and fixing the fixed mounting plate 1 and the fixed mold plate 2, and 16 is a movable side leg for fixing and connecting the movable mounting plate 3 and the movable plate 4. , 17 and 18 are bushings.

본 고안에 의한 상하 언더커트 강제취출장치가 적용된 사출금형에 의하여 상하언더커트부(U)(U')를 가지는 제품(P)[예컨대 상하 내측에 언더커트 돌기를 가지는 주시기 등]을 성형함에 있어서는, 제 2 도의 형개 상태에서 가동측이 전진하여 형폐가 이루어지기 시작하면 가동측 코어핀(8)이 고정형판(2)에 형성된 공간내로 끼어들어 가게 됨과 아울러 가동측의 스트리퍼판(7)에 의해 고정측 리턴핀(12)이 밀려올라가면서 고정측밀판(11)이 전진되어 제 1 도와 같이 형폐가 완료된다 .In molding a product P having an upper and lower undercut portions U and U '(for example, having an undercut protrusion on the upper and lower sides) by an injection mold to which the upper and lower undercut forced ejection apparatuses according to the present invention are applied, In the mold opening state of FIG. 2, when the movable side advances and mold closing is started, the movable side core pin 8 is inserted into the space formed in the stationary plate 2, and by the stripper plate 7 on the movable side. As the fixed side return pin 12 is pushed up, the fixed side contact plate 11 is advanced to complete the mold closing as shown in FIG.

이 상태에서 수지를 투입하여 제품(P)을 성형하며, 사출성형이 완료되고 제품(P)의 취출을 위하여 가동측을 후퇴시키면서 제품(P)가동측의 후퇴에 따라 가동코어핀(8)에 끼워진 상태로 후퇴되어 고정형판(1)에서 빠져나오게 되며, 제품(P) 고정형판(2)에서 취출된 상태에서 하부관(B')측의 하부 언더커트부(U')는 가동코어핀(8)의 후퇴에 따라 확장되면서 취출됨을 종래와 같다.In this state, the resin is introduced to mold the product P, and injection molding is completed and the movable core pin 8 is moved in accordance with the retraction of the product P moving side while retracting the movable side for taking out the product P. It is retracted in the fitted state and exits from the stationary plate 1, and in the state taken out from the product (P) stationary plate 2, the lower undercut portion U 'of the lower tube B' side is movable core pin ( As the retreat of 8) is expanded, extraction is performed as in the prior art.

한편 가동측의 후퇴에 따라 고정측 밀판(11)은 고정코어핀(13)과 함께 고정설치판(1)과 고정형판(2) 사이의 공간부(10)에서 가동측으로 후퇴되며 고정측 밀판(11)이 고정형판(2)에 닿을때까지는 상부측 언더커트부(U)가 고정코어핀(13)에서 취출되는 일이 없이 고정측 밀판(11)과 고정코어핀(13) 및 제품(P)은 그대로 후퇴하게 되고 고정측 밀판(11)이 고정형판(2)에 닿은 상태 즉, 상부측 언더커트부(U)가 하부관(B')이 위치하고 있던 직경이 큰 부분에 이른 상태로 되면 고정측 판(11)과 이에 고정설치된 이동코어핀(13)은 더이상 후퇴되지 않고 정지하게 되며 이때 제품(P)은 가동측의 후퇴에 따라 계속하여 후퇴하면서 취출되므로 상부관(B)측의 언더커트부(U)는 하부관(B')이 위치하고 있던 직격이 큰 부분내에서 확장되면서 취출되는 것이다.On the other hand, with the retreat of the movable side, the fixed side plate 11 is retracted to the movable side in the space portion 10 between the fixed installation plate 1 and the fixed mold plate 2 together with the fixed core pin 13 and fixed side plate ( The upper side undercut portion U is not pulled out from the fixed core pin 13 until 11) touches the fixed plate 2, and the fixed side plate 11, the fixed core pin 13, and the product P ) Is retracted as it is, and when the stationary side plate 11 touches the stationary plate 2, that is, when the upper side undercut portion U reaches a large diameter where the lower tube B 'is located. The fixed side plate 11 and the movable core pin 13 fixed thereto are stopped without being retracted anymore. At this time, the product P is taken out while continuing to retreat according to the retreat of the movable side. The cut part U is taken out while expanding in the large part where the direct line in which the lower pipe B 'was located is extended.

상부측 언더커트부(U)의 강제취출이 완료된 상태에서 가동측이 계속 후퇴함에 따라 제품(P)을 고정형판(2)에서 완전히 취출되며 하부측 언더커트부(U')가 확장되면서 취출됨과 동시에 스트리퍼판(7)에 의하여 취출되는 것이다.As the movable side continues to retreat while the forced side of the upper undercut portion U is completed, the product P is completely taken out from the fixed plate 2, and the lower undercut portion U 'is extended while being taken out. At the same time, the stripper plate 7 is taken out.

이상과 같이 본 고안에 의하면 상하부 내측면에 돌기나 돌조와 같은 언더커트부가 있는 제푼의 성형에 있어서도 상하부 언더커트부와 강제취출을 원활하게 수행할 수 있는 효과가 있는 것이다.As described above, according to the present invention, the upper and lower undercut portions and the forced ejection can be smoothly performed even in the shaping of the lower part of the upper and lower inner surfaces such as protrusions and protrusions.

Claims (1)

고정측에는 고정설치관(1)과 고정형판(2)를 설치하고 가동측에는 가동설치판(3)과 가동형판(4)과 가동측 밀판(5)과 가동측리턴핀(6) 및 스트리판(7)을 설치하고 가동형판(4)에는 하측언더커트 처리용 홈부(9)가 형성된 가동코어핀(8)을 설치한 것에 있어서, 상기 고정설치판(1)과 고정형판(2) 사이에는 공간부(10)를 형성하여 이 공간부(10)에 고정측 밀판(11)을 설치하여 이에 고정형판(2)을 관통하여 스트리퍼판(7)에 접면하는 리턴핀(12)을 고정설치하고, 상기 고정측 밀판(11)에는 상측 언더커트 처리용 홈부(14)가 형성된 고정측 이동코어핀(13)을 고정설치하여서 된 사출금형의 상하 언더커트 강제 취출장치.On the stationary side, a stationary mounting tube (1) and a stationary plate (2) are installed. On the movable side, a movable installation plate (3), a movable die plate (4), a movable side plate (5), a movable side return pin (6) and a strip plate ( (7) and the movable core pin (8) having the lower undercut groove (9) formed on the movable die (4), wherein the space between the stationary mounting plate (1) and the stationary die (2) is provided. Forming a part 10 and providing a fixed side plate 11 in this space part 10 to fix the return pin 12 penetrating the stationary plate 2 and contacting the stripper plate 7. The upper and lower undercut forced ejection apparatus of the injection mold formed by fixing the fixed side moving core pin 13 having the upper undercut processing groove 14 formed on the fixed side mill plate 11.
KR2019900006065U 1990-05-09 1990-05-09 Ejecting device for injection molding article KR920004584Y1 (en)

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KR920004584Y1 true KR920004584Y1 (en) 1992-07-06

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