WO2012096469A2 - Injection mold for forming a rib in a space part - Google Patents

Injection mold for forming a rib in a space part Download PDF

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Publication number
WO2012096469A2
WO2012096469A2 PCT/KR2012/000064 KR2012000064W WO2012096469A2 WO 2012096469 A2 WO2012096469 A2 WO 2012096469A2 KR 2012000064 W KR2012000064 W KR 2012000064W WO 2012096469 A2 WO2012096469 A2 WO 2012096469A2
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WO
WIPO (PCT)
Prior art keywords
product
mold
rib
slide core
forming
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PCT/KR2012/000064
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French (fr)
Korean (ko)
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WO2012096469A3 (en
Inventor
김철민
김창화
신상민
Original Assignee
가온미디어 주식회사
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Publication of WO2012096469A2 publication Critical patent/WO2012096469A2/en
Publication of WO2012096469A3 publication Critical patent/WO2012096469A3/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
    • 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

Definitions

  • the present invention relates to an injection mold for forming a rib in the space portion, and more particularly to an injection mold for forming the rib in the space portion to reinforce the weak portion of the product formed with the space portion on the front surface.
  • An injection mold is a mold used to obtain a plastic product made after cooling by closing a mold first, melting a resin such as plastic and injecting it into a mold at high temperature and high pressure.
  • FIG. 1 is a perspective view showing a product formed with a conventional front space portion.
  • the product 10 forming the case of the set top box is injection molded by an injection mold, and the front surface 11 of the product 10 is formed of an empty space 12.
  • the space portion 12 is formed on the front surface 11 of the product 10
  • a long thin strip is formed on the front surface 11 of the product 10, and thus, the product 10 may be bent and deformed. May be high and the strength of the product 10 becomes weak.
  • An object of the present invention is to provide an injection mold capable of forming a rib so that the front panel can be inserted into the front space at the same time to form the rib in the front space of the product to reinforce the weak part of the product.
  • the present invention is an injection mold comprising an upper mold for forming the upper surface of the product, a lower mold for forming the lower surface of the product, and a slide core for forming the side of the product while processing the undercut.
  • the front slide core is
  • the front slide core is A plurality of protrusions having a shape corresponding to the coupling groove are formed on the opposite surface facing the front core of the lower mold, and the molten resin injected into the cavity through the gate is closely inserted into the protrusion of the front slide core in the coupling groove of the lower mold.
  • the ribs are formed in the front space of the product by flowing into the molding groove.
  • the cross section of the rib forming groove is preferably formed in a 'c' shape.
  • the depth of engagement of the coupling groove is preferably formed deeper than the thickness of the front panel so that the front panel can be inserted into the front space of the product.
  • the lower mold of the injection mold is provided with a coupling groove and a rib forming groove
  • the front slide core is formed with a protrusion inserted into the coupling groove so that the molten resin is injected into the rib forming groove so that ribs are formed in the front space of the product. It provides the effect of making it possible.
  • the injection mold of the present invention by forming a rib in the product front space portion to reinforce the weak part of the product, there is an effect that can increase the rigidity of the product by increasing the bending deformation and strength of the product.
  • the rib formed by the injection mold of the present invention is formed in the 'c' shape does not cause interference between the product and the front panel has an effect that can easily couple the front panel to the front of the product.
  • FIG. 1 is a perspective view showing a product formed with a conventional front space portion.
  • Figure 2 is a block diagram showing the configuration of an injection mold according to the present invention.
  • Figure 3 is a cross-sectional view showing the interior of the injection mold according to the present invention.
  • Figure 4 is a rear perspective view showing a product in which ribs are formed in the front space by the injection mold of the present invention.
  • Figure 5 is a state diagram showing a state in which the front panel is coupled to the product molded by the injection mold of the present invention.
  • the injection mold according to the present invention is the upper mold 100 for forming the upper surface of the product 10, the lower mold 200 for forming the lower surface of the product 10, and the undercut It comprises a slide core 300 for molding the side of the product 10 while processing.
  • the slide core 300 includes a front slide core 310, a first side slide core 320, a second side slide core 330, and a rear slide core 340.
  • the molten resin is injected through the gate of the upper mold 100 while the upper mold 100, the lower mold 200, and the slide core 300 are coupled to each other, the molten resin is formed inside the cavity corresponding to the product. Injection molding takes place into the space.
  • the present invention improves the structure of the injection mold in which the slide core is used to remove the undercut to give a reinforcing effect to the part in which a long thin strip is formed on the front surface 11 of the product 10, the front space portion of the product 10 This is to make the rib 13 in (12). These ribs 13 make it possible to support the product 10 against external loads or impacts.
  • the undercut refers to protrusions or grooves that make it difficult to remove the product from the mold, and the product structure or mold processing, which prevents the product from being taken out after the mold is separated, cannot be processed, and a shape for installing a separate mechanism device is required.
  • it means a molded part perpendicular to the separation direction of the mold.
  • the undercut formed in a direction different from the separation direction of the mold must be removed before the product can be taken out so that the product can be easily taken out from the mold.
  • the lower mold 200 of the injection mold is integrally formed at the top, bottom, and front of the plurality of coupling grooves 212 and the coupling grooves 212, which are spaced apart at a predetermined distance from the upper and lower ends of the front core 210, and are embedded inward.
  • a rib forming groove 214 is provided.
  • the depth of engagement of the coupling groove 212 is deeper than the thickness of the front panel 20 so that the front panel 20 (see FIG. 5) including various buttons can be inserted into the front space portion 12 of the product 10. It is preferably formed. When the depth of engagement of the coupling groove 212 is narrower than the thickness of the front panel 20, the front panel 20 cannot be inserted into the product 10.
  • the rib forming groove 214 is formed in the horizontal direction, the first rib forming groove 214a formed in the vertical direction, the second rib forming groove 214b formed in the horizontal direction and connected to the upper end of the first rib forming groove, It is composed of a third rib forming groove 214c connected to the lower end of the first rib forming groove and all are integrally connected to form a cross-section 'c'.
  • the rib forming groove 214 is thinner than the thickness of the coupling groove 212, it is preferably formed flat.
  • the reason why the shape of two rib forming grooves located in the middle and the rib forming grooves positioned next to each other is different from that of the first rib forming parts positioned at both sides to screw the base plate to the bottom of the product 10.
  • the groove 214a is formed in a cylindrical shape. If the rib is cylindrical, the screw hole can be easily machined.
  • the injection mold front slide core 310 is provided with a plurality of protrusions 314 having a shape corresponding to the coupling groove 212 on the opposite surface 312 facing the front core 210 of the lower mold 200.
  • grooves 316 and 318 are formed at upper and lower edges of the protrusion 314. The grooves 316 and 318 are for facilitating the separation of the front slide core 310 and the product 10 when the front slide core 310 is retracted, and at the edge of the protrusion 314 to eliminate undercuts. It is preferably formed.
  • the protrusion 314 of the front slide core 310 is in close contact with the coupling groove 212 of the lower mold 200.
  • the molten resin injected into the cavity through the gate flows into the rib forming groove 214 to form the rib 13 in the front space part 12 of the product 10.
  • the product 10 is taken out by the eject pin.
  • the slide core 300 is preferably installed to allow the left and right slide transfer.
  • the upper mold 100 and the slide core 300 is coupled by the angular pin so that the slide core 300 is retracted as the angular pin slides when the upper mold 100 is lifted.
  • the angular pins are lowered together while the slide core 300 is installed to move forward.
  • the slide core 300 may be horizontally slidable by using a hydraulic cylinder or an electric driving device. Therefore, when the molten resin injected through the mold gate is filled in the cavity and the cooling is completed, the undercut on the sidewall of the product 10 is the slide core 300 so that the product 10 can be taken out at the same time the mold is opened. The product 10 is taken out after retreat backwards than the undercut length.
  • FIG. 4 is a rear perspective view showing the product 10 in which the ribs 13 are formed in the front space 12 by the injection mold of the present invention
  • FIG. 5 is a product 10 molded by the injection mold of the present invention. Is a state diagram showing a state in which the front panel 20 is coupled.
  • the product 10 molded by the injection mold according to the present invention forms a case of the set-top box, the rib 13 is formed in the front space portion 12 located on the front surface 11 of the product 10.
  • These ribs 13 can increase the rigidity by increasing the bending deformation and strength of the product 10 by reinforcing the weak part of the product 10.
  • the rib 13 has a cross-section formed in a 'c' shape, when the front panel 20 is inserted into the front of the product 10, the interference between the rib 13 and the front panel 20 does not occur. 10) and the front panel 20 can be easily coupled.

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

Abstract

The present invention relates to an injection mold including an upper mold for forming a top surface of a product, a lower mold for forming a bottom surface of the product, and a slide core processing undercutting to form a side surface of the product. The lower mold has a plurality of inwardly recessed coupling grooves spaced a predetermined distance from upper and lower ends of a front core and a rib forming groove integrated with the upper and lower ends and a front portion of the coupling grooves. The slide core includes a front slide core. The front slide core includes a plurality of protrusions, each having a shape corresponding to that of each of the coupling grooves, on a surface facing the front core of the lower mold. The coupling grooves of the lower mold and the protrusions of the front slide core may be closely attached and inserted so that a melted resin injected into a cavity through a gate flows into the rib forming groove to form a rib in a front space part of the product. According to the present invention, the coupling grooves and the rib forming groove may be defined in the lower mold of the injection mold. The protrusions inserted into the coupling grooves are disposed on the front slide core. Thus, the melted resin may be injected into the rib forming groove to form the rib in the front space part of the product.

Description

공간부에 리브를 성형하기 위한 사출금형Injection mold for forming rib in space
본 발명은 공간부에 리브를 성형하기 위한 사출금형에 관한 것으로서, 더욱 상세하게는 전면에 공간부가 형성된 제품의 취약 부위를 보강하기 위해 공간부에 리브를 형성시키기 위한 사출금형에 관한 것이다.The present invention relates to an injection mold for forming a rib in the space portion, and more particularly to an injection mold for forming the rib in the space portion to reinforce the weak portion of the product formed with the space portion on the front surface.
사출금형이란 먼저 금형을 닫은 다음 플라스틱 등의 수지를 녹여 고온과 고압으로 금형 내에 사출시켜 냉각 후 만들어지는 플라스틱 제품 등을 얻고자 할 때 쓰는 금형이다. An injection mold is a mold used to obtain a plastic product made after cooling by closing a mold first, melting a resin such as plastic and injecting it into a mold at high temperature and high pressure.
도 1은 종래의 전면공간부가 형성된 제품을 도시한 사시도이다. 셋탑박스의 케이스를 형성하는 제품(10)은 사출금형에 의하여 사출성형되며, 제품(10)의 전면(11)은 빈 공간부(12)로 형성되어 있다. 이같이 제품(10)의 전면(11)에 공간부(12)가 형성되는 경우에는 제품(10)의 전면(11)에 길고 가는 띠가 생성되고, 이로 인해서 제품(10)이 휘어져서 변형될 우려가 높고, 제품(10)의 강도가 취약해지는 문제점이 발생할 수 있다.1 is a perspective view showing a product formed with a conventional front space portion. The product 10 forming the case of the set top box is injection molded by an injection mold, and the front surface 11 of the product 10 is formed of an empty space 12. As such, when the space portion 12 is formed on the front surface 11 of the product 10, a long thin strip is formed on the front surface 11 of the product 10, and thus, the product 10 may be bent and deformed. May be high and the strength of the product 10 becomes weak.
또한 제품(10)의 전면(11)에 프론트패널(20: 도 5 참조)이 삽입되기 때문에, 제품(10)의 빈 공간부(12)에 리브 성형이 까다로운 문제점이 있다.In addition, since the front panel 20 (see FIG. 5) is inserted into the front surface 11 of the product 10, there is a problem that rib molding is difficult in the empty space 12 of the product 10.
본 발명의 목적은 제품의 취약 부위를 보강하기 위해 제품의 전면공간부에 리브를 성형하는 동시에 전면공간부에 프론트패널이 삽입될 수 있도록 리브를 성형할 수 있는 사출금형을 제공하는 것이다.An object of the present invention is to provide an injection mold capable of forming a rib so that the front panel can be inserted into the front space at the same time to form the rib in the front space of the product to reinforce the weak part of the product.
본 발명은 제품의 상면을 성형하는 상부금형과, 제품의 하면을 성형하는 하부금형과, 언더컷을 처리하면서 제품의 측면을 성형하는 슬라이드코아를 포함하여 구성되는 사출금형으로서, 하부금형은 전면코아의 상하단에서 일정거리로 이격되어 내측으로 함입된 복수개의 결합홈과, 결합홈의 상단, 하단, 전방에 일체로 형성된 리브성형홈을 구비하고, 슬라이드코아는 전면슬라이드코아를 구비하고, 전면슬라이드코아는 하부금형의 전면코아와 마주하는 대향면에 결합홈과 대응하는 형상의 돌출부가 복수개 형성되고, 하부금형의 결합홈에 전면슬라이드코아의 돌출부가 밀착삽입되어 게이트를 통해 캐비티로 주입되는 용융수지가 리브성형홈으로 흘러들어가서 제품의 전면공간부에 리브가 성형되는 것이 바람직하다.The present invention is an injection mold comprising an upper mold for forming the upper surface of the product, a lower mold for forming the lower surface of the product, and a slide core for forming the side of the product while processing the undercut. A plurality of coupling grooves spaced apart from the upper and lower ends by a predetermined distance and the rib forming grooves integrally formed at the top, bottom, and front of the coupling groove, the slide core has a front slide core, the front slide core is A plurality of protrusions having a shape corresponding to the coupling groove are formed on the opposite surface facing the front core of the lower mold, and the molten resin injected into the cavity through the gate is closely inserted into the protrusion of the front slide core in the coupling groove of the lower mold. Preferably, the ribs are formed in the front space of the product by flowing into the molding groove.
본 발명의 사출금형에서 리브성형홈의 단면은 'ㄷ'자형으로 형성되는 것이 바람직하다. 또한 본 발명의 사출금형에서 결합홈의 함입깊이는 제품의 전면공간부에 프론트패널이 삽입될 수 있도록 프론트패널의 두께보다 더 깊게 형성되는 것이 바람직하다.In the injection mold of the present invention, the cross section of the rib forming groove is preferably formed in a 'c' shape. In addition, in the injection mold of the present invention, the depth of engagement of the coupling groove is preferably formed deeper than the thickness of the front panel so that the front panel can be inserted into the front space of the product.
본 발명에 따르면 사출금형의 하부금형에는 결합홈과 리브성형홈을 구비하고 전면슬라이드코아에는 결합홈에 삽입되는 돌출부가 형성됨으로써 용융수지가 리브성형홈으로 주입되어 제품의 전면공간부에 리브가 성형될 수 있도록 하는 효과를 제공한다.According to the present invention, the lower mold of the injection mold is provided with a coupling groove and a rib forming groove, and the front slide core is formed with a protrusion inserted into the coupling groove so that the molten resin is injected into the rib forming groove so that ribs are formed in the front space of the product. It provides the effect of making it possible.
또한 본 발명의 사출금형에 의해 제품 전면공간부에 리브가 성형되어 제품의 취약 부위를 보강함으로써, 제품의 휨 변형 및 강도를 높여 제품의 강성을 높일 수 있는 효과가 있다.In addition, by the injection mold of the present invention by forming a rib in the product front space portion to reinforce the weak part of the product, there is an effect that can increase the rigidity of the product by increasing the bending deformation and strength of the product.
또한 본 발명의 사출금형 의해 성형된 리브는 'ㄷ'자형으로 형성되어 제품과 프론트패널의 간섭이 일어나지 않아 제품의 전면에 프론트패널을 용이하게 결합시킬 수 있는 효과가 있다.In addition, the rib formed by the injection mold of the present invention is formed in the 'c' shape does not cause interference between the product and the front panel has an effect that can easily couple the front panel to the front of the product.
도 1은 종래의 전면공간부가 형성된 제품을 도시한 사시도.1 is a perspective view showing a product formed with a conventional front space portion.
도 2는 본 발명에 의한 사출금형의 구성를 나타낸 구성도.Figure 2 is a block diagram showing the configuration of an injection mold according to the present invention.
도 3은 본 발명에 의한 사출금형의 내부를 도시한 단면도.Figure 3 is a cross-sectional view showing the interior of the injection mold according to the present invention.
도 4는 본 발명의 사출금형에 의해 전면공간부에 리브가 형성된 제품을 도시한 후방사시도.Figure 4 is a rear perspective view showing a product in which ribs are formed in the front space by the injection mold of the present invention.
도 5는 본 발명의 사출금형에 의해 성형된 제품에 프론트패널이 결합되는 상태를 나타낸 상태도.Figure 5 is a state diagram showing a state in which the front panel is coupled to the product molded by the injection mold of the present invention.
이하, 도면을 참조하여 본 발명의 실시예에 따른 공간부에 리브를 성형하기 위한 사출금형에 대해 상세하게 설명한다.Hereinafter, an injection mold for molding ribs in a space portion according to an embodiment of the present invention will be described in detail with reference to the drawings.
도 2 및 도 3을 참조하면, 본 발명에 의한 사출금형은 제품(10)의 상면을 성형하는 상부금형(100)과, 제품(10)의 하면을 성형하는 하부금형(200)과, 언더컷을 처리하면서 제품(10)의 측면을 성형하는 슬라이드코아(300)를 포함하여 구성된다. 슬라이드코아(300)는 전면슬라이드코아(310), 제 1 측면슬라이드코아(320), 제 2 측면슬라이드코아(330) 및 후면슬라이드코아(340)을 포함한다.2 and 3, the injection mold according to the present invention is the upper mold 100 for forming the upper surface of the product 10, the lower mold 200 for forming the lower surface of the product 10, and the undercut It comprises a slide core 300 for molding the side of the product 10 while processing. The slide core 300 includes a front slide core 310, a first side slide core 320, a second side slide core 330, and a rear slide core 340.
상부금형(100)과 하부금형(200)과 슬라이드코아(300)가 상호 결합된 상태에서 상부금형(100)의 게이트를 통해 용용수지가 주입되면, 용융수지가 제품에 대응하는 형상의 캐비티의 내부 공간으로 투입되어 사출 성형이 이루어진다. When the molten resin is injected through the gate of the upper mold 100 while the upper mold 100, the lower mold 200, and the slide core 300 are coupled to each other, the molten resin is formed inside the cavity corresponding to the product. Injection molding takes place into the space.
본 발명은 언더컷 제거를 위해 슬라이드코아가 사용되는 사출금형의 구조를 개선시켜서 제품(10)의 전면(11)에 길고 가는 띠가 생성되는 부분에 보강효과를 주기 위해 제품(10)의 전면공간부(12)에 리브(13)를 만들기 위함이다. 이러한 리브(13)는 외부로부터의 하중이라든가 충격에 대해서 제품(10)을 지탱할 수 있게 해준다.The present invention improves the structure of the injection mold in which the slide core is used to remove the undercut to give a reinforcing effect to the part in which a long thin strip is formed on the front surface 11 of the product 10, the front space portion of the product 10 This is to make the rib 13 in (12). These ribs 13 make it possible to support the product 10 against external loads or impacts.
여기서, 언더컷이란 제품을 금형으로부터 빼내기 어렵게 장애를 주는 돌기 혹은 홈 부분을 말하는 것으로, 금형이 분리된 후 제품을 취출하는데 방해가 되는 제품구조 또는 금형가공이 불가능해 별도의 기구장치를 설치해야 하는 형상부로, 금형의 분리방향에 수직인 성형부를 말한다. 금형의 분리방향과 다른 방향으로 형성된 언더컷은 제품의 취출 전에 반드시 제거하여야만 제품을 금형으로부터 용이하게 취출시킬 수가 있다.Here, the undercut refers to protrusions or grooves that make it difficult to remove the product from the mold, and the product structure or mold processing, which prevents the product from being taken out after the mold is separated, cannot be processed, and a shape for installing a separate mechanism device is required. By part, it means a molded part perpendicular to the separation direction of the mold. The undercut formed in a direction different from the separation direction of the mold must be removed before the product can be taken out so that the product can be easily taken out from the mold.
이하, 언더컷을 없애고 제품(10)의 전면공간부(12)에 리브(13)를 만들 수 있는 사출금형의 구조에 대해 설명한다. Hereinafter, the structure of the injection mold which can remove the undercut and can make the rib 13 in the front space part 12 of the product 10 is demonstrated.
사출금형의 하부금형(200)은 전면코아(210)의 상하단에서 일정거리로 이격되어 내측으로 함입된 복수개의 결합홈(212)과, 결합홈(212)의 상단, 하단, 전방에 일체로 형성된 리브성형홈(214)을 구비한다. The lower mold 200 of the injection mold is integrally formed at the top, bottom, and front of the plurality of coupling grooves 212 and the coupling grooves 212, which are spaced apart at a predetermined distance from the upper and lower ends of the front core 210, and are embedded inward. A rib forming groove 214 is provided.
결합홈(212)의 함입깊이는 제품(10)의 전면공간부(12)에 각종 버튼을 포함하는 프론트패널(20: 도 5 참조)이 삽입될 수 있도록 프론트패널(20)의 두께보다 더 깊게 형성되는 것이 바람직하다. 결합홈(212)의 함입깊이가 프론트패널(20)의 두께보다 좁게 형성되면 제품(10) 내부로 프론트패널(20)을 삽입할 수 없게 된다.The depth of engagement of the coupling groove 212 is deeper than the thickness of the front panel 20 so that the front panel 20 (see FIG. 5) including various buttons can be inserted into the front space portion 12 of the product 10. It is preferably formed. When the depth of engagement of the coupling groove 212 is narrower than the thickness of the front panel 20, the front panel 20 cannot be inserted into the product 10.
또한 리브성형홈(214)은 수직방향으로 형성된 제 1 리브성형홈(214a), 수평방향으로 형성되고 제 1 리브성형홈의 상단과 연결되는 제 2 리브성형홈(214b), 수평방향으로 형성되고 제 1 리브성형홈의 하단과 연결된 제 3 리브성형홈(214c)으로 구성되며 모두 일체로 연결되어 단면이 'ㄷ'자형으로 형성된다. 리브성형홈(214)은 결합홈(212)의 두께보다 얇고, 납작하게 형성되는 것이 바람직하다.In addition, the rib forming groove 214 is formed in the horizontal direction, the first rib forming groove 214a formed in the vertical direction, the second rib forming groove 214b formed in the horizontal direction and connected to the upper end of the first rib forming groove, It is composed of a third rib forming groove 214c connected to the lower end of the first rib forming groove and all are integrally connected to form a cross-section 'c'. The rib forming groove 214 is thinner than the thickness of the coupling groove 212, it is preferably formed flat.
도면에 도시된 바에 의하면, 가운데 위치한 2개의 리브성형홈과 그 옆에 위치한 리브성형홈의 형상이 다른 이유는 제품(10)의 바닥에 베이스판을 나사결합시키기 위해서 양 옆에 위치한 제 1 리브성형홈(214a)을 원통형으로 형성한 것이다. 리브가 원통형인 경우에 나사구멍을 쉽게 가공할 수가 있다.As shown in the figure, the reason why the shape of two rib forming grooves located in the middle and the rib forming grooves positioned next to each other is different from that of the first rib forming parts positioned at both sides to screw the base plate to the bottom of the product 10. The groove 214a is formed in a cylindrical shape. If the rib is cylindrical, the screw hole can be easily machined.
사출금형의 전면슬라이드코아(310)는 하부금형(200)의 전면코아(210)와 마주하는 대향면(312)에 결합홈(212)과 대응하는 형상의 돌출부(314)가 복수개 형성된다. 그리고 돌출부(314)의 상,하단의 모서리에는 홈(316, 318)이 형성된다. 이 홈(316, 318)은 전면슬라이드코아(310)가 후퇴되는 경우에 전면슬라이드코아(310)와 제품(10)의 분리를 용이하게 하기 위한 것이며, 언더컷을 없애기 위하여 돌출부(314)의 모서리에 형성되는 것이 바람직하다.The injection mold front slide core 310 is provided with a plurality of protrusions 314 having a shape corresponding to the coupling groove 212 on the opposite surface 312 facing the front core 210 of the lower mold 200. In addition, grooves 316 and 318 are formed at upper and lower edges of the protrusion 314. The grooves 316 and 318 are for facilitating the separation of the front slide core 310 and the product 10 when the front slide core 310 is retracted, and at the edge of the protrusion 314 to eliminate undercuts. It is preferably formed.
상기와 같이, 사출금형의 하부금형(200)과 전면슬라이드코아(310)의 구조를 개선함으로써, 하부금형(200)의 결합홈(212)에 전면슬라이드코아(310)의 돌출부(314)가 밀착삽입되면 게이트를 통해 캐비티로 주입되는 용융수지가 리브성형홈(214)으로 흘러들어가서 제품(10)의 전면공간부(12)에 리브(13)가 성형되는 것이다. 캐비티에 용융수지가 충진된 후 냉각이 완료되면 제품(10)은 이젝트핀에 의해 취출되게 된다. As described above, by improving the structure of the lower mold 200 and the front slide core 310 of the injection mold, the protrusion 314 of the front slide core 310 is in close contact with the coupling groove 212 of the lower mold 200. When inserted, the molten resin injected into the cavity through the gate flows into the rib forming groove 214 to form the rib 13 in the front space part 12 of the product 10. After cooling is completed after the cavity is filled with molten resin, the product 10 is taken out by the eject pin.
한편, 제품(10)을 취출시 언더컷을 제거하기 위해서 슬라이드코아(300)는 좌우 슬라이드 이송가능하도록 설치되는 것이 바람직하다. 예를 들면, 상부금형(100)과 슬라이드코아(300)는 앵귤러핀에 의해 결합되어 상부금형(100)이 승강시 슬라이드코아(300)가 앵귤러핀이 미끄럼운동되면서 슬라이드코아(300)가 후퇴되고, 또한 상부금형(100)이 하강하면 앵귤러핀이 함께 하강하면서 슬라이드코아(300)가 전진이송되도록 설치하는 것이다.On the other hand, in order to remove the undercut when taking out the product 10, the slide core 300 is preferably installed to allow the left and right slide transfer. For example, the upper mold 100 and the slide core 300 is coupled by the angular pin so that the slide core 300 is retracted as the angular pin slides when the upper mold 100 is lifted. Also, if the upper mold 100 is lowered, the angular pins are lowered together while the slide core 300 is installed to move forward.
경우에 따라서 유압실린더 또는 전기적 구동장치를 이용하여 슬라이드코아(300)를 좌우 슬라이드 가능하도록 이송시킬 수도 있다. 따라서, 금형의 게이트를 통해 주입된 용융수지가 캐비티에 충진되고 냉각이 완료되면 제품(10)의 측벽에 있는 언더컷은 금형이 열림과 동시에, 제품(10)이 취출이 가능하도록 슬라이드코아(300)가 언더컷 길이보다 뒤로 후퇴한 다음에 제품(10)이 취출된다.In some cases, the slide core 300 may be horizontally slidable by using a hydraulic cylinder or an electric driving device. Therefore, when the molten resin injected through the mold gate is filled in the cavity and the cooling is completed, the undercut on the sidewall of the product 10 is the slide core 300 so that the product 10 can be taken out at the same time the mold is opened. The product 10 is taken out after retreat backwards than the undercut length.
도 4는 본 발명의 사출금형에 의해 전면공간부(12)에 리브(13)가 형성된 제품(10)을 도시한 후방사시도이고, 도 5는 본 발명의 사출금형에 의해 성형된 제품(10)에 프론트패널(20)이 결합되는 상태를 나타낸 상태도이다.4 is a rear perspective view showing the product 10 in which the ribs 13 are formed in the front space 12 by the injection mold of the present invention, and FIG. 5 is a product 10 molded by the injection mold of the present invention. Is a state diagram showing a state in which the front panel 20 is coupled.
본 발명에 따른 사출금형에 의해 성형된 제품(10)은 셋탑박스의 케이스를 형성하며, 제품(10)의 전면(11)에 위치한 전면공간부(12)에는 리브(13)가 형성된다. 이러한 리브(13)는 제품(10)의 취약 부위를 보강하여 제품(10)의 휨 변형 및 강도를 높여 강성을 높일 수 있도록 해준다. 또한 리브(13)는 단면이 'ㄷ'자형으로 형성되기 때문에 제품(10) 전면에 프론트패널(20)을 삽입할 때, 리브(13)와 프론트패널(20)의 간섭이 일어나지 않게 되므로 제품(10)과 프론트패널(20)을 용이하게 결합시킬 수 있다.The product 10 molded by the injection mold according to the present invention forms a case of the set-top box, the rib 13 is formed in the front space portion 12 located on the front surface 11 of the product 10. These ribs 13 can increase the rigidity by increasing the bending deformation and strength of the product 10 by reinforcing the weak part of the product 10. In addition, since the rib 13 has a cross-section formed in a 'c' shape, when the front panel 20 is inserted into the front of the product 10, the interference between the rib 13 and the front panel 20 does not occur. 10) and the front panel 20 can be easily coupled.

Claims (3)

  1. 제품(10)의 상면을 성형하는 상부금형(100)과, 제품(10)의 하면을 성형하는 하부금형(200)과, 언더컷을 처리하면서 제품(10)의 측면을 성형하는 슬라이드코아(300)를 포함하여 구성되는 사출금형으로서,The upper mold 100 for forming the upper surface of the product 10, the lower mold 200 for forming the lower surface of the product 10, and the slide core 300 for forming the side of the product 10 while processing the undercut As an injection mold configured to include,
    상기 하부금형(200)은 전면코아(210)의 상하단에서 일정거리로 이격되어 내측으로 함입된 복수개의 결합홈(212)과, 상기 결합홈(212)의 상단, 하단, 전방에 일체로 형성된 리브성형홈(214)을 구비하고,The lower mold 200 has a plurality of coupling grooves 212 recessed at a predetermined distance from the upper and lower ends of the front core 210 and embedded in the inner side, and ribs integrally formed at the top, bottom, and front of the coupling groove 212. It has a forming groove 214,
    상기 슬라이드코아(300)는 전면슬라이드코아(310)를 구비하고, 상기 전면슬라이드코아(310)는 상기 하부금형(200)의 전면코아(210)와 마주하는 대향면(312)에 상기 결합홈(212)과 대응하는 형상의 돌출부(314)가 복수개 형성되고, The slide core 300 has a front slide core 310, the front slide core 310 is the coupling groove (on the opposite surface 312 facing the front core 210 of the lower mold 200) A plurality of protrusions 314 having a shape corresponding to the 212 is formed,
    상기 하부금형(200)의 결합홈(212)에 상기 전면슬라이드코아(310)의 돌출부(314)가 밀착삽입되어 게이트를 통해 캐비티로 주입되는 용융수지가 상기 리브성형홈(214)으로 흘러들어가서 제품(10)의 전면공간부(12)에 리브(13)가 성형되는 것을 특징으로 하는 사출금형.The protrusion 314 of the front slide core 310 is tightly inserted into the coupling groove 212 of the lower mold 200, and the molten resin injected into the cavity through the gate flows into the rib forming groove 214. An injection mold, characterized in that the rib 13 is molded in the front space portion 12 of the (10).
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 리브성형홈(214)의 단면은 'ㄷ'자형으로 형성되는 것을 특징으로 하는 사출금형.The cross section of the rib forming groove 214 is injection mold, characterized in that formed in the '' 'shape.
  3. 청구항 2에 있어서,The method according to claim 2,
    상기 결합홈(212)의 함입깊이는 제품(10)의 전면공간부(12)에 프론트패널(20)이 삽입될 수 있도록 상기 프론트패널(20)의 두께보다 더 깊게 형성되는 것을 특징으로 하는 사출금형.Injection depth of the coupling groove 212 is characterized in that the front panel 20 is formed deeper than the thickness of the front panel 20 so that the front panel 20 can be inserted into the front space portion 12 of the product 10 mold.
PCT/KR2012/000064 2011-01-10 2012-01-04 Injection mold for forming a rib in a space part WO2012096469A2 (en)

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Publication number Priority date Publication date Assignee Title
KR19990010194U (en) * 1997-08-28 1999-03-15 김영환 Injection mold with inner slide structure
KR100302986B1 (en) * 1999-07-08 2001-09-22 이종석 Metal mold for a injection molding
KR100376824B1 (en) * 2000-09-01 2003-03-19 만도공조 주식회사 Stiffener of air inlet panel for an air conditioner and method for making the same

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KR0133850Y1 (en) * 1996-11-30 1999-05-15 대우전자 주식회사 Rib structure of injection mold

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990010194U (en) * 1997-08-28 1999-03-15 김영환 Injection mold with inner slide structure
KR100302986B1 (en) * 1999-07-08 2001-09-22 이종석 Metal mold for a injection molding
KR100376824B1 (en) * 2000-09-01 2003-03-19 만도공조 주식회사 Stiffener of air inlet panel for an air conditioner and method for making the same

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