KR910002499Y1 - Inner undercut ejecting device of injection mould - Google Patents

Inner undercut ejecting device of injection mould Download PDF

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Publication number
KR910002499Y1
KR910002499Y1 KR2019880022126U KR880022126U KR910002499Y1 KR 910002499 Y1 KR910002499 Y1 KR 910002499Y1 KR 2019880022126 U KR2019880022126 U KR 2019880022126U KR 880022126 U KR880022126 U KR 880022126U KR 910002499 Y1 KR910002499 Y1 KR 910002499Y1
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KR
South Korea
Prior art keywords
elastic spring
inner undercut
inclined cam
cam
spring
Prior art date
Application number
KR2019880022126U
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Korean (ko)
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KR900011834U (en
Inventor
김태석
Original Assignee
삼성전자 주식회사
안시환
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Priority to KR2019880022126U priority Critical patent/KR910002499Y1/en
Publication of KR900011834U publication Critical patent/KR900011834U/en
Application granted granted Critical
Publication of KR910002499Y1 publication Critical patent/KR910002499Y1/en

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Classifications

    • 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
    • B29C45/4478—Removing or ejecting moulded articles for undercut articles using non-rigid undercut forming elements, e.g. elastic or resilient
    • 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
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332—Mountings or guides therefor; Drives therefor
    • 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
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332—Mountings or guides therefor; Drives therefor
    • B29C2045/336—Cam drives
    • 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 내측 언더컷 처리장치Inner undercut treatment device of injection mold

제1도는 본 고안의 조립상태 종단면도.1 is a longitudinal cross-sectional view of the assembled state of the present invention.

제2도는 본 고안의 작동상테 종단면도.2 is a longitudinal cross-sectional view of the operation of the present invention.

제3도는 제2도의 A부 상세도.3 is a detailed view of portion A of FIG.

제4도는 종래 고안의 조립상태 종단면도.Figure 4 is a longitudinal cross-sectional view of the assembled state of the conventional design.

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

5 : 상코어 5a : 지지돌부5: upper core 5a: support protrusion

6 : 하코어 6A : 경사안착부6: lower core 6A: inclined seat

6a : 걸림턱 6b : 탄력스프링6a: Hanging jaw 6b: Elastic spring

7 : 경사캠 7a : 멈춤나사7: Inclination Cam 7a: Set Screw

7b : 스프링 7c : 멈춤핀7b: spring 7c: stop pin

본 고안은 사출금형에 관한 것으로 특히, 제품의 특성상 필요에 의해 형성된 내측 언더컷(under cut)을 보다 용이하게 처리할 수 있도록 언더커 처리장치의 구조를 개량하여 사용함으로서, 제품의 생산성 향상은 물론 단순 구조이므로 금형제작을 용이하게할 수 있도록 사출금형의 내측 언더컷 처리장치에 관한 것이다.The present invention relates to an injection mold, and in particular, by improving the use of the structure of the underker processing apparatus to more easily process the inner undercut formed by the need of the characteristics of the product, as well as improving the productivity of the product The present invention relates to an inner undercut processing apparatus of an injection mold so that the mold can be easily manufactured.

종래 사출금형에 의해 성형된 제품의 내측 언더컷을 처리하기 위해서는 일반적으로 도면 제4도에 도시된 바와같이 경사핀(20)을 이용하여 내측 언더컷을 처리해 왔으나, 경사핀(20) 적용시 성형품(21) 취출이 가능하도록 일정거리를 유지시켜 주기위해서 경사핀(20) 길이가 길어지면서 금형 다리(22)가 상대적으로 길게 제작되므로 금형제작이 번잡할 뿐만 아니라, 성형품(21) 취출시에는 상기와 같은 구조적인 결함에 의해서 금형의 사이클(Cycle, 열림에서 닫힘까지)이 길어져 생산량이 저하되는등 여러결점이 있었다.In order to process the inner undercut of the product molded by the conventional injection mold has been generally processed the inner undercut using the inclined pin 20, as shown in Figure 4, the molded article 21 when applying the inclined pin 20 In order to maintain a certain distance to take out, the length of the inclined pin 20 is increased and the mold leg 22 is made relatively long, thus making the mold complicated and taking out the molded article 21 as described above. Due to structural defects, the cycle of the mold (Cycle, open to close) was long, resulting in various production defects.

따라서 본 고안은 상기와 같은 종래의 결점을 해소시키기 위해서 하코어 내측으로 경사캠을 안착시켜, 탄력스프링의 탄력에 의해 경사캠이 상향이동되면서 성형품의 내측 언더컷으로부터 이탈될 수 있도록 안출된 것으로 도면에 의하여 그 구성과 작용효과를 상세히 설명하면 다음과 같다.Therefore, the present invention is to be inclined to be released from the inner undercut of the molded part while the inclined cam is moved upward by the elastic spring elasticity in order to settle the inclined cam inside the lower core in order to solve the conventional drawback as described above. By the configuration and effect described in detail as follows.

상, 하 고정판(1)(2), 상, 하원판(3)(4), 상, 하코어(5)(6) 등으로 구성된 사출금형에 있어서 상코어(5)에 경사면을 갖는 지지돌부(5a)를 하향으로 돌설시키고, 하코어(6) 일정부위에는 걸림턱(6a)이 형성되고, 바닦면에서 탄력스프링(6b)이 삽입된 경사안착부(6A)를 상기 지지돌부(5a)와 면접촉을 이룰 수 있도록 가공하여, 탄력스프링(6b) 상부로 경사캠(7)을 안착시키되, 경사캠(7) 내부로는, 멈춤나사(7a)에 의해 탄지된 스프링(7b)의 탄력을 받을 수 있도록 멈춤핀(7c)을 설치하여 경사캠(7)이 일정거리 "S"만큼 이동되었을때 걸림턱(6a)에 걸리면서 일정거리 "S" 이상으로 이동되는 것을 억제할 수 있도록 구성된 것으로 미설명 부호 8는 성형품, 9는 밀핀인 것이다.A support protrusion having an inclined surface on the upper core 5 in an injection mold composed of upper and lower fixing plates 1 and 2, upper and lower plate 3 and 4, upper and lower cores 5 and 6, and the like. Protruding downward 5a, the locking jaw (6a) is formed at a predetermined portion of the lower core 6, the inclined seating portion (6A) in which the elastic spring (6b) is inserted in the bottom surface of the support protrusion (5a) Processed to make a surface contact with, the inclined cam 7 is seated on the upper side of the elastic spring (6b), but inside the inclined cam (7), the elasticity of the spring (7b) supported by the stop screw (7a) By installing the stop pin (7c) to receive the inclined cam (7) is to be configured to suppress the movement over a certain distance "S" while being caught by the locking jaw (6a) when moved by a certain distance "S" Reference numeral 8 is a molded article, 9 is a milpin.

이와같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention configured as described above are as follows.

도면 제1도에 도시된 바와같이 사출성형이 완료된후, 성형품(8) 취출을 위해 상고정판(1)과 상원판(3)을 상승시키면, 상원판(3)에 고정된 상코어(5)와 하원판(4)에 고정된 하코어(6) 사이가 벌어지면서, 상코어(5)하면에 하향돌설된 지지돌부(5a)가 하코어(6)의 일정부위로 형성된 경사 안착부(6A)의 좌측 경사면에 슬라이딩 안내되어 상승됨에 따라 지지돌부(5a)는 경사캠(7)으로부터 떨어지게 된다.As shown in FIG. 1, after the injection molding is completed, the upper fixing plate 1 and the upper plate 3 are raised for ejecting the molded product 8, and the upper core 5 fixed to the upper plate 3 is Between the lower core 6 fixed to the lower plate 4, the inclined seating portion 6A having the support protrusion 5a protruding downward from the upper core 5 as a predetermined portion of the lower core 6; The support protrusion 5a is separated from the inclined cam 7 as the guide is raised by sliding on the left inclined surface.

이와 동시에 경사안착부(6A) 바닦면에 삽입된 탄력스프링(6b)의 탄성력에 의해 경사캠(7)이 경사안착부(6A)의 경사면에 슬라이딩 안내되어 일정거리 "S"만큼 탄력적으로 상향 이동됨에 따라 성형품(8)의 내측언더컷 부분이 처리되면서 최종적으로 상승되는 밀핀(9)에 의해 성형품(8)이 완전 취출되는 것이다. (도면 제2도 및 3도 참고)At the same time, the inclined cam 7 is slidably guided on the inclined surface of the inclined seat 6A by the elastic force of the elastic spring 6b inserted into the inclined seat 6A. As the inner undercut portion of the molded article 8 is processed, the molded article 8 is completely taken out by the mill pin 9 which is finally raised. (See Figures 2 and 3)

여기서, 경사캠(7)이 탄력스프링(6b)의 탄력에 의해 일정거리 "S"큼 이동시, 경사캠(7) 내부로 멈춤나사(7a)에 탄지된 스프링(7b)의 탄력을 받을 수 있도록 설치된 멈춤핀(7c)이 경사안착부(6A)의 우측에 형성된 걸림턱(6a)에 걸리게 되어 경사캠(7)이 일정거리 "S"이상 이동되는 것을 방지하여 준다.Here, when the inclined cam 7 moves by a certain distance "S" by the elasticity of the elastic spring 6b, the inclined cam 7 receives the elasticity of the spring 7b supported by the stop screw 7a into the inclined cam 7. Installed stop pin (7c) is caught by the locking jaw (6a) formed on the right side of the inclined seating portion (6A) prevents the inclined cam (7) is moved over a certain distance "S".

또한, 성형품(8)을 완전취출시킨후, 금형이 닫힐 경우에는, 상고정판(1), 상원판(3), 상코어(5)가 하강함에 따라 상코어(5)의 지지돌부(5a)에 의해 경사캠(7)이 하측으로 밀리면서 하코어(6)의 경사안착부(6A)내로 위치이동 되어 탄력스프링(6b)을 수축시키면서, 상기 서술된 바와같은 금형장치의 동작이 성형품(8) 취출시의 동작과 역행되어 금형이 닫히게 되므로서 금형 싸이클(cycle) 동작이 완료되는 것이다.In addition, when the mold is closed after the molded article 8 is completely taken out, the support protrusion 5a of the upper core 5 is lowered as the upper fixing plate 1, the upper plate 3, and the upper core 5 are lowered. As a result, the inclined cam 7 is pushed downward and moved into the inclined seat 6A of the lower core 6 to contract the elastic spring 6b. The mold cycle operation is completed as the mold is closed in reverse to the operation at the time of taking out.

이상에서 본 바와같이 본 고안은 경사캠(7)이 탄력스프링(6b)의 탄성력에 의해 상향이동 되면서 언더컷을 용이하게 처리함으로서 종래, 사출금형의 내측 언더컷 처리장치에 있어서 결함의 요인이었던, 여러결점을 해소시키게 된것으로 즉, 금형구조가 간단함으로 제작이 용이할뿐만 아니라 동작의 안정성으로 제품의 품질 및 생산성을 증대시킬 수 있는 것이다.As can be seen from the above, the present invention is easy to handle undercuts while the inclined cam 7 moves upward by the elastic force of the elastic spring 6b. Thus, the defects in the conventional undercut processing apparatus of the injection mold have been various defects. In other words, the mold structure is simple, so that the production is easy and the stability of the operation can increase the product quality and productivity.

Claims (1)

상, 하코어(5)(6)가 설치된 사출금형에 있어서, 상기 상코어(5)에 경사면을 갖는 지지돌부(5a)를 하향으로 돌설시키고, 하코어(6) 일정부위에는, 걸림턱(6a)이 형성되고, 바닦면에는 탄력스프링(6b)이 삽입된 경사안착부(6A)를 상기 지지부(5a)와 면접촉을 이를 수 있도록 가공하여 탄력스프링(6b) 상부로 경사캠(7)을 안착시키되, 경사캠(7)내부로는 멈춤나사(7a)에 의해 탄지된 스프링(7b)의 탄력을 받을 수 있도록 멈춤핀(7c)을 설치하여 경사캠(7)이 일정거리 "S"만큼 이동되었을 때 걸림턱(6a)에 걸리도록 구성된 것을 특징으로 하는 사춰금형의 내측 언더컷 처리장치.In the injection mold provided with the upper and lower cores 5 and 6, the support protrusion 5a having the inclined surface is projected downward on the upper core 5, and the locking jaw ( 6a) is formed, and the inclined seating portion 6A having the elastic spring 6b inserted therein is processed to allow surface contact with the support portion 5a so as to be inclined to the upper portion of the elastic spring 6b. The inclined cam (7) is a certain distance "S" by installing a stop pin (7c) so as to receive the elasticity of the spring (7b) supported by the stop screw (7a) inside the inclined cam (7) An internal undercut processing apparatus of a look die, characterized in that configured to be caught by a locking jaw (6a) when moved.
KR2019880022126U 1988-12-30 1988-12-30 Inner undercut ejecting device of injection mould KR910002499Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880022126U KR910002499Y1 (en) 1988-12-30 1988-12-30 Inner undercut ejecting device of injection mould

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Application Number Priority Date Filing Date Title
KR2019880022126U KR910002499Y1 (en) 1988-12-30 1988-12-30 Inner undercut ejecting device of injection mould

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Publication Number Publication Date
KR900011834U KR900011834U (en) 1990-07-02
KR910002499Y1 true KR910002499Y1 (en) 1991-04-20

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