KR100312044B1 - Process for ejecting a thin container in an injection molding - Google Patents
Process for ejecting a thin container in an injection molding Download PDFInfo
- Publication number
- KR100312044B1 KR100312044B1 KR1019990007378A KR19990007378A KR100312044B1 KR 100312044 B1 KR100312044 B1 KR 100312044B1 KR 1019990007378 A KR1019990007378 A KR 1019990007378A KR 19990007378 A KR19990007378 A KR 19990007378A KR 100312044 B1 KR100312044 B1 KR 100312044B1
- Authority
- KR
- South Korea
- Prior art keywords
- injection molding
- air outlet
- fixed side
- air
- present
- Prior art date
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 5
- -1 polypropylene Polymers 0.000 abstract description 7
- 239000004743 Polypropylene Substances 0.000 abstract description 6
- 229920001155 polypropylene Polymers 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 6
- 238000007664 blowing Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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
- B29C45/43—Removing or ejecting moulded articles using fluid under pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
Abstract
본 발명은 포리 프로필렌 수지로 0.4-0.5㎜ 정도의 두께가 얇은 박판으로 형성되는 컵이나 라면용기 등의 각종 용기를 사출 성형할때 에어취출을 이용하여 각종 용기의 사출 성형품을 보다 원활하게 성형할 수 있도록 한 박판용기의 사출성형시 취출방법에 관한 것이다.According to the present invention, the injection molded products of various containers can be more smoothly formed by using air blowing when injection molding various containers such as cups or ramen containers formed by thin plates having a thickness of about 0.4-0.5 mm with polypropylene resin. It relates to a take-out method during injection molding of a thin plate container.
본 발명은 고정측 형판의 하단부에는 공기를 공급하는 고정측 에어취출구를 설치하고 가동측 형판의 하단부에는 가동측 코아를 2개로 분할 형성하여 조립시 생기는 미세한 틈새로 압축공기를 주입할 수 있도록 가동측 형판의 하단부에는 가동측 에어취출구를 설치하여 이루어지는 것을 특징으로 하는 것이다.According to the present invention, a fixed side air outlet for supplying air is provided at the lower end of the fixed side template, and the movable side core is divided into two movable side cores so that the compressed air can be injected into a minute gap generated during assembly. The lower end of the template is characterized in that the movable air outlet is provided.
본 발명은 박판용기의 성형품을 사출 성형할때 에어취출구로 압축공기를 공급하여 주므로서 보다 원활한 사출 성형이 이루어져 고속성형과 다수개의 금형에 적용이 가능하며 무엇 보다도 습동되는 부분이 없어 부품의 마모로 인한 후레쉬 등의 문제도 동시에 해결할 수 있는 등의 효과를 나타내게 되는 것이다.The present invention can be applied to high-speed molding and a plurality of molds by supplying the compressed air to the air outlet when injection molding the molded product of the thin plate container is possible to apply to high-speed molding and a plurality of molds and most of all there is no sliding parts Problems such as the resulting flash will also have the effect of being able to solve at the same time.
Description
본 발명은 포리 프로필렌 수지(Poly propylene resin)로 0.4-0.5mm 정도 두께의 박판(薄板)으로 형성되는 컵이나 라면용기 등의 각종 용기(이하 각종용기, 동일)를 사출 성형할 때 에어취출(air ejecting)을 이용하여 각종 용기의 성형품을 보다 원활하게 사출 성형이 이루어지도록 한 박판용기의 사출성형시 취출방법에 관한 것이다.The present invention is made of polypropylene resin (poly propylene resin) in the case of injection molding a variety of containers (hereinafter, various containers, the same), such as a cup or a ramen container formed of a thin plate of about 0.4-0.5mm thickness (air) The present invention relates to an ejection method for injection molding of a thin plate container which allows injection molding of molded articles of various containers more smoothly by using ejecting.
종래에는 포리 프로필렌 수지로서 0.4-0.5mm 정도의 두께의 박판 컵이나 라면 라면용기 등의 각종 용기를 사출 성형하여 취출(ejecting)시 0.4-0.5mm 정도 두께의 얇은 박판으로 성형되기 때문에 성형품의 강성(强性)이 낮고 포리 프로필렌 수지 자체가 껌과 같이 금속에 잘 달라 붙는 성질이 있으므로 코아(core)에 밀착되는 문제로 인하여 스트리퍼(stripper)를 이용한 일반적인 금형 구조에는 많은 문제점이 야기되는 실정이고 또한 고정측에 리브(rib)가 많이 형성되는 용기의 경우에는 강성이 낮고 달라 붙는 성질 때문에 성형품이 고정측에 박히기 쉬워 안정적인 사출성형이 매우 어려운 등의 문제점이 있었다.Conventionally, as polypropylene resin, various containers such as a thin cup of about 0.4-0.5 mm or a ramen ramen container are injection molded to form a thin thin plate of about 0.4-0.5 mm when ejected. Due to its low adhesiveness and the ability of the polypropylene resin to adhere to metals such as gums well, the problem of sticking to the core causes many problems in the general mold structure using strippers. In the case of a rib having a large number of ribs formed on the side, there is a problem that the molded article is easily stuck to the fixed side due to its low rigidity and sticking property, which makes it difficult to perform stable injection molding.
본 발명은 상기와 같은 종래의 문제점을 해결하기 위하여 발명된 것으로서 고정측 형판의 하단부에 고정측 에어취출구를 설치하여 압축공기를 공급할 수 있도록 구성하고 가동측 코아를 2개로 분할 형성하여 조립시 생기는 틈새로 압축공기를 주입할 수 있도록 가동측 형판에 가동측 에어취출구를 설치하여 성형품을 사출 성형할 때 에어취출구로 압축공기를 공급하여 주므로서 보다 원활한 사출성형이 이루어져 고속성형과 다수개의 금형에 적용이 가능하며 무엇 보다도 습동되는 부분이 없어 부품의 마모로 인한 후레쉬(flash) 등의 문제도 동시에 해결할 수 있도록 한 것이다.The present invention has been invented to solve the conventional problems as described above is to provide a fixed side air outlet in the lower end of the fixed side template to supply compressed air and to form a split between two movable side cores formed during the gap By supplying the compressed air to the air outlet when injection molding the molded product by installing the movable air outlet on the movable side template to inject the compressed air into the air, the injection molding is more smooth. Most of all, there is no sliding part, so it is possible to solve problems such as flash due to wear of parts.
도 1은 본 발명의 사출성형 상태도1 is an injection molding state of the present invention
도 2는 본 발명의 고정측 에어취출 상태도2 is a fixed side air blowing state of the present invention
도 3은 본 발명의 가동측 에어취출 상태도Figure 3 is a movable side air blowing state of the present invention
＜도면의 주요 부분에 대한 부호 설명＞<Explanation of symbols on the main parts of the drawing>
600 : 고정측 에어취출구 800 : 가동측 분할 코아 900 : 가동측 에어취출구600: fixed side air outlet 800: movable side split core 900: movable side air outlet
도 1은 본 발명의 사출성형 상태도를 나타내는 것이고, 도 2는 본 발명의 고정측 에어취출 상태도를 나타내는 것이며, 도 3은 본 발명의 가동측 에어취출 상태도를 나타내는 도면으로서 이하 본 발명을 첨부된 도면에 따라 그 구성을 상세히 설명하면 다음과 같다.1 is a view showing the injection molding state diagram of the present invention, Figure 2 is a view showing a fixed side air ejection state diagram of the present invention, Figure 3 is a view showing a movable side air ejection state diagram of the present invention as follows attached to the present invention; According to the configuration in detail as follows.
100은 고정측 취부판(取部板)을 나타내는 것이고, 200은 고정측 형판(型板)을 나타내는 것이며, 300은 1차형개 스프링(1次 型開 spring)을 나타내는 것이고, 400은 캐비티(cavity)측을 나타내는 것이며, 500은 캐비티측 코아(cavity core)를 나타내는 것이고, 600은 고정측 에어취출구(air ejecting body)을 나타내는 것이며, 700은 가동측 코아를 나타내는 것이고, 800은 가동측 분할코아를 나타내는 것이며, 900은 가동측 에어취출구을 나타내는 것이고, 1000은 가동측 형판을 나타내는 것이다.100 represents a fixed side mounting plate, 200 represents a fixed side template, 300 represents a primary opening spring, and 400 represents a cavity ) Side, 500 represents cavity side cavity, 600 represents stationary side air ejecting body, 700 represents movable side core, 800 represents movable side split core. Reference numeral 900 denotes a movable side air outlet, and 1000 denotes a movable side template.
상기와 같은 본 발명의 구성에 있어서 주 요부는 고정측 형판(200)의 하단부에 에어를 공급하는 고정측 에어취출구(600)를 설치한 구성과 가동측 코아(700)를 2개로 분할 형성하여 조립시 생기는 틈새로 압축공기를 주입할 수 있도록 가동측 형판(1000)에 가동측 에어취출구(900)를 설치한 것을 특징으로 하는 것이다.In the configuration of the present invention as described above, the main component is assembled by dividing the configuration of the fixed side air outlet 600 for supplying air to the lower end of the fixed side template 200 and the movable side core 700 divided into two. The movable side air outlet 900 is installed on the movable side template 1000 so as to inject compressed air into a gap generated during the process.
상기와 같이 구성된 본 발명의 작용을 설명하면 고정측 형판(200)에서 가동측 형판(1000)이 1차적으로 열리면 고정측 취부판(100)과 고정측 형판(200) 사이에 설치된 1차형개 스프링(300)에 의해 가동측 형판(1000)이 도 2에 도시한 바와 같이 1차형개(L1)와 같은 상태로 열리게 된다. 이때 캐비티(400)측에 설치된 고정측 에어취출구(600)로 압축공기를 공급하면 캐비티(400)에서 성형품이 분리되어 가동측 코아(700)에 딸려 나오게 된다.Referring to the operation of the present invention configured as described above, the primary side opening spring installed between the fixed side mounting plate 100 and the fixed side template 200 when the movable side template 1000 is primarily opened in the fixed side template 200. By 300, the movable side template 1000 is opened in the same state as the primary mold opening L 1 as shown in FIG. At this time, when compressed air is supplied to the fixed air outlet 600 installed at the cavity 400 side, the molded product is separated from the cavity 400 and comes out to the movable core 700.
계속하여 가동측 형판(1000)이 도 3에 도시한 바와 같이 2차형개(L2)와 같은 상태로 완전히 열리게 되면 가동측 에어취출구(900)로 압축공기를 공급하면 가동측 코아(700)를 통하여 가동측 분할코아(800)에 만들어진 미세한 틈새 사이로 압축공기가 분출되므로 압축공기의 분출력에 의해 성형품은 가동측 코아(700)에서 용이하게 분리되어 자중에 의해 금형에서 취출되어 성형품(PPC)이 성형된다.Subsequently, when the movable side template 1000 is completely opened in the same state as the secondary mold opening L 2 as shown in FIG. 3, when the compressed air is supplied to the movable side air outlet 900, the movable side core 700 is opened. Compressed air is ejected between the minute gaps formed in the movable core split core 800 through the compressed air. Molded.
상기와 같은 본 발명은 포리 프로필렌 수지로 0.4-0.5mm 정도 두께의 박판으로 만들어지는 각종 용기를 사출 성형할 때 고정측 에어취출구와 가동측 에어취출구로 압축공기를 공급하여 성형품을 취출하기 때문에 성형품의 강성이 높으며 코아에 밀착되지 않을 뿐만 아니라 특히 리브가 많이 있는 라면용기 등을 성형할 경우에는 성형품이 고정측에 박히지 않아 안정적으로 성형할 수 있고 고속성형과 다수개의 금형에 적용이 가능 함은 물론 무엇 보다도 습동되는 부분이 없어 부품의 마모로 인하여 발생되는 후레쉬 문제 등을 동시에 해결할 수 있는 등의 효과를 나타내는 것이다.In the present invention as described above, when injection molding various containers made of a thin plate of about 0.4-0.5mm thickness with polypropylene resin, compressed air is supplied to the fixed air outlet and the movable air outlet so as to take out the molded article. Not only does it have high rigidity and does not adhere to cores, but especially when forming ramen containers with a large number of ribs, the molded products do not get stuck on the fixed side so that they can be molded stably and can be applied to high-speed molding and multiple molds Since there is no sliding part, it is possible to simultaneously solve the flash problem caused by the wear of the parts.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990007378A KR100312044B1 (en) | 1999-03-05 | 1999-03-05 | Process for ejecting a thin container in an injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990007378A KR100312044B1 (en) | 1999-03-05 | 1999-03-05 | Process for ejecting a thin container in an injection molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000059629A KR20000059629A (en) | 2000-10-05 |
| KR100312044B1 true KR100312044B1 (en) | 2001-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990007378A KR100312044B1 (en) | 1999-03-05 | 1999-03-05 | Process for ejecting a thin container in an injection molding |
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| Country | Link |
|---|---|
| KR (1) | KR100312044B1 (en) |
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1999
- 1999-03-05 KR KR1019990007378A patent/KR100312044B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR20000059629A (en) | 2000-10-05 |
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