WO2020111523A1 - 코어를 구비하는 부구제작방법 - Google Patents
코어를 구비하는 부구제작방법 Download PDFInfo
- Publication number
- WO2020111523A1 WO2020111523A1 PCT/KR2019/014119 KR2019014119W WO2020111523A1 WO 2020111523 A1 WO2020111523 A1 WO 2020111523A1 KR 2019014119 W KR2019014119 W KR 2019014119W WO 2020111523 A1 WO2020111523 A1 WO 2020111523A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- mold
- manufacturing
- retreats
- foaming
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000005187 foaming Methods 0.000 claims abstract description 22
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
- 238000010304 firing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 9
- 239000006260 foam Substances 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 241000834695 Auchenoglanis occidentalis Species 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 239000002666 chemical blowing agent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
- B29C44/428—Mould constructions; Mould supporting equipment
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
- A01K61/65—Connecting or mooring devices 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/76—Cores
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Definitions
- the present invention relates to a method for manufacturing a buoy having a core, and more specifically, by injecting and foaming the buoy using an outer core and an inner core, light and high strength, good quality and defect-free buoys can be conveniently and quickly. It relates to a method for manufacturing a ball having a core that can be produced.
- bugu has been developed for aquaculture and the like, and as a prior art, the method of mixing a blowing agent in a predetermined ratio in plastic resin powder in Publication No. 10-2018-0122207; Introducing the mixed raw material into the mold and closing the mold;
- a method for manufacturing a hollow buoy characterized in that it comprises a.
- blowing agent pipe portion 30 is injected with a blowing agent (1);
- At least one auxiliary pipe portion 50 for uniformly distributing the foaming agent 1 injected into the resin canal pipe portion 30 inside the case 10;
- a buoy that includes at least one separation panel portion 70 inserted into the resin canal tube portion 30 and disposed between the auxiliary pipe portions 50.
- the present invention has been devised to solve the above problems, and the present invention is a light and high strength, good quality, and defect-free buoys that are easily and quickly produced by injecting and foaming the buoys using the outer and inner cores. It is intended to provide a method for manufacturing a ball having a core that can be manufactured.
- the present invention relates to a method for manufacturing a buoy having a core, in a method for manufacturing a buoy using a core (40) in which synthetic resin particles are injected into a mold and melted by applying heat, wherein the mold is fixed mold (10), It is characterized in that it is manufactured by dividing the middle mold 20 into three moving molds.
- the present invention has a remarkable effect that light and high strength, good quality, and defect-free bugu can be easily and quickly produced by injecting and foaming the bugu using the outer core and the inner core.
- Figure 2 is a mold layout upon bubu foaming of the present invention
- Figure 3 is a mold layout when taking out the present invention bugu
- Figure 4 is a photograph of the top surface of the mold during injection of the present invention bugu
- Figure 6 is a photograph of the movable side of the mold during injection of the present invention bugu
- Figure 8 is a mold core picture during injection of the present invention bugu
- the present invention relates to a method for manufacturing a buoy having a core, in a method for manufacturing a buoy using a core (40) in which synthetic resin particles are injected into a mold and melted by applying heat, wherein the mold is fixed mold (10), It is characterized in that it is manufactured by dividing the middle mold 20 into three moving molds.
- the fixed mold 10 is formed with a sub-spherical space portion and the middle mold 20 is formed with a hole in the front and rear so that the core can move back and forth, the diameter of the space portion of the fixed mold 10 is the core It is characterized by being larger than the diameter of the outer core (42) and the middle mold (20) of (40).
- the core 40 is placed in a mold and injected and foamed, but the core 40 is composed of an inner core 41 and an outer core 42, and in the injection step, the outer core 42 is advanced.
- the core 40 is placed in the fixed mold 10 in a state where the outer core 42 is located on the outside of the inner core 41, the intermediate mold 20 and the moving mold 30 are closed, and then injected and fixed.
- the synthetic resin is filled in the gap between the buoyant space portion of the mold 10 and the core 40 to inject the buoy, and in the foaming step, the moving mold 30 is retracted backward by a predetermined distance and the distance is equal to the
- the outer core 42 is also retracted to the rear, and the inner core 41 is also characterized in that it is retracted by the firing distance.
- a hydraulic cylinder 50 is installed on the rear side of the inner core 41 to block the retraction of the inner core 41.
- the fixed mold 10, the middle mold 20, the moving mold 30 is characterized in that it is installed sequentially horizontally from the rear to the front, coupled, separated.
- the present invention is produced by dividing the mold into three fixed, medium, and movable molds in a buoy production method using a core to inject synthetic resin particles, foaming agents, other antioxidants, pigments, etc. into the mold and melt them by heating.
- the bugu has a hollow cylindrical shape with a flat top and bottom section and a round cross section.
- the fixed mold is formed with a sub-spherical space, and an intermediate mold is formed with a hole for the core to move.
- the diameter of the space portion is formed larger than the diameter of the outer core and the middle mold.
- the core is placed in a mold and injected and foamed, but the core has a technical feature of the present invention, which consists of an inner core and an outer core.
- the outer core is advanced, and the outer core is positioned outside the inner core, the core is placed in a fixed mold, the intermediate mold and the moving mold are closed, and then injected, and a synthetic resin is formed between the buoyant space portion of the fixed mold and the core. Is filled and the bubul shape is injection molded.
- the moving mold retreats to the rear by a certain distance, and the outer core retracts to the rear by the predetermined distance, and the inner core retreats by the firing distance.
- a hydraulic cylinder is installed on the rear side of the inner core to prevent the retraction of the inner core.
- the fixed, middle, and movable molds are horizontally installed from the rear to the front to be combined and separated.
- the physical gas foaming of the present invention uses an ultra-fine foam injection machine (mucell injection machine) that dissolves a supercritical gas in a resin.
- the injection temperature of the present invention is 180 ⁇ 210 °C.
- the first injection time is 20 to 60 seconds.
- the thickness of the product is 1-3mm. Fine bubbles are generated in the primary injection product by physical or chemical blowing agents.
- the first injection After the first injection, it has a cooling time that can be cured only on the surface of the product 2-10 seconds.
- the core of the double structure is rapidly opened (mould retreat, core bag).
- the length of the buoy is about 260 mm
- the inner core retracts and stops by 14 mm
- the outer core retracts to the cavity end line of 130 mm.
- the inner core is adjusted through a separate cylinder, and the outer core is adjusted through the retract function of the molding injection machine.
- Cavity foaming time is 2 to 5 seconds.
- the inner core retraction distance is 14 mm, and the outer core width is 14 mm.
- the foaming amount is 14 mm.
- the thickness of the primary injection product is 1 to 3 mm, and the thickness of the final product after foaming is 15 to 17 mm.
- the mold design can be varied by adjusting the thickness and foaming amount of the product.
- the double-structured core enables quick and easy foaming of cylindrical and box products. Through this, it is possible to replace various types of styrofoam products that are the main culprit of environmental pollution by producing light and durable injection molded products by forming bubbles on the inside, although the surface is firm.
- the multi-stage control of the retraction distance of the hydraulic cylinder is possible.
- a certain distance is retreated, and at this stage, the retreat distance is further retreated.
- the third stage you retreat a further distance.
- the expansion volume is reduced in all stages of foaming to increase the strength of the product. This can vary for precise manufacturing depending on the type of material.
- the length of the buoy is 260 mm
- the length molded in the injection step is 260 mm
- one step is 6 mm
- this step is 5 mm
- the third step is 3 mm.
- the outer diameter of the injection is constant, and the thickness of the inside of the buoy thickens during foaming.
- the present invention has a remarkable effect that light and high strength, good quality, and defect-free bugu can be easily and quickly produced by injecting and foaming the bugu using the outer core and the inner core.
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims (3)
- 금형내에 합성수지 입자를 주입하고 열을 가하여 녹여 부구를 제작하는 코어(40)를 사용한 부구제작방법에 있어서, 상기 금형을 고정금형(10), 중간금형(20), 이동금형(30) 3개로 분할하여 제작하는 것을 특징으로 하는 코어를 구비하는 부구제작방법
- 제1항에 있어서, 상기 고정금형(10)에는 부구형상의 공간부가 형성되고 중간금형(20)은 코어가 전후방으로 이동할 수 있게 전후방으로 구멍이 형성되어 있는 것으로, 상기 고정금형(10)의 공간부의 지름이 코어(40)의 외측코어(42) 및 중간금형(20)의 지름보다 큰 것이며,상기 부구제작방법은 코어(40)를 금형 내에 넣고 사출 및 발포하되, 상기 코어(40)는 내측코어(41)와 외측코어(42)로 이루어져서, 사출단계에서는 외측코어(42)를 전진하여 내측코어(41)의 외측에 외측코어(42)가 위치한 상태에서 상기 코어(40)를 고정금형(10)내에 안치하고 중간금형(20) 및 이동금형(30)을 닫은후 사출하여, 고정금형(10)의 부구모양 공간부와 코어(40) 사이 틈에 합성수지가 충진되어 부구모양이 사출성형되는 것이며, 발포단계에서는 상기 이동금형(30)이 후방으로 일정거리 후퇴하고 상기 일정거리만큼 상기 외측코어(42)도 후방으로 후퇴하며, 내측코어(41)도 발포거리만큼 후퇴하는 것을 특징으로 하는 코어를 구비하는 부구제작방법
- 제2항에 있어서,상기 유압실린더의 후퇴거리를 다단제어를 할 수 있는 것으로, 발포중 일단계에서는 일정거리 후퇴하고, 이단계에서는 일정거리 더 후퇴하며, 삼단계에서는 일정거리 더 후퇴하고, 발포의 전단계에서 팽창부피를 적게 하여 제품의 강도를 증가시키며, 소재의 종류에 따라 정밀제작을 위해 달라질 수 있는 것을 특징으로 하는 코어를 구비하는 부구제작방법
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020180152760A KR102150171B1 (ko) | 2018-11-30 | 2018-11-30 | 코어를 구비하는 금형을 사용한 부구제작방법 |
KR10-2018-0152760 | 2018-11-30 |
Publications (1)
Publication Number | Publication Date |
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WO2020111523A1 true WO2020111523A1 (ko) | 2020-06-04 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2019/014119 WO2020111523A1 (ko) | 2018-11-30 | 2019-10-25 | 코어를 구비하는 부구제작방법 |
Country Status (2)
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KR (1) | KR102150171B1 (ko) |
WO (1) | WO2020111523A1 (ko) |
Citations (6)
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KR200211126Y1 (ko) * | 2000-07-22 | 2001-01-15 | 주식회사정일인더스트리 | 체인식 중간몰드를 구비한 패드 발포 금형의 구조 |
KR20040096914A (ko) * | 2004-10-07 | 2004-11-17 | 삼덕통상 주식회사 | 신발밑창 성형용 금형 |
JP4629272B2 (ja) * | 2001-07-04 | 2011-02-09 | 有限会社広和製作所 | 発泡樹脂成型機 |
KR20160035511A (ko) * | 2014-09-23 | 2016-03-31 | 정용현 | 해조류 양식용 부자 성형장치 |
WO2017032360A1 (de) * | 2015-08-21 | 2017-03-02 | Wolfgang Staude | Auftriebskörper zum aufschwimmen auf einer flüssigkeit |
KR20180097200A (ko) * | 2017-02-22 | 2018-08-31 | 에이테크솔루션(주) | D.s.i 공법을 이용한 후육부를 가진 투명제품 제작 금형 및 그 제작 방법 |
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JPH1024436A (ja) * | 1996-07-10 | 1998-01-27 | Mitsui Petrochem Ind Ltd | 熱可塑性樹脂発泡体およびその製造方法 |
JP2001277280A (ja) * | 2000-03-30 | 2001-10-09 | Japan Steel Works Ltd:The | 超薄肉部分を有する成形品の射出成形方法 |
JP2003127194A (ja) * | 2001-10-22 | 2003-05-08 | Mitsubishi Heavy Ind Ltd | 射出発泡成形方法 |
JP2010115908A (ja) * | 2008-11-14 | 2010-05-27 | Inoac Corp | 発泡成形部材の製造方法および製造装置 |
WO2013031209A1 (en) * | 2011-09-01 | 2013-03-07 | Canon Kabushiki Kaisha | Foam-molding parts manufacturing method, foam-molding part, and foam-mold |
-
2018
- 2018-11-30 KR KR1020180152760A patent/KR102150171B1/ko active IP Right Grant
-
2019
- 2019-10-25 WO PCT/KR2019/014119 patent/WO2020111523A1/ko active Application Filing
Patent Citations (6)
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KR200211126Y1 (ko) * | 2000-07-22 | 2001-01-15 | 주식회사정일인더스트리 | 체인식 중간몰드를 구비한 패드 발포 금형의 구조 |
JP4629272B2 (ja) * | 2001-07-04 | 2011-02-09 | 有限会社広和製作所 | 発泡樹脂成型機 |
KR20040096914A (ko) * | 2004-10-07 | 2004-11-17 | 삼덕통상 주식회사 | 신발밑창 성형용 금형 |
KR20160035511A (ko) * | 2014-09-23 | 2016-03-31 | 정용현 | 해조류 양식용 부자 성형장치 |
WO2017032360A1 (de) * | 2015-08-21 | 2017-03-02 | Wolfgang Staude | Auftriebskörper zum aufschwimmen auf einer flüssigkeit |
KR20180097200A (ko) * | 2017-02-22 | 2018-08-31 | 에이테크솔루션(주) | D.s.i 공법을 이용한 후육부를 가진 투명제품 제작 금형 및 그 제작 방법 |
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Publication number | Publication date |
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KR20200065866A (ko) | 2020-06-09 |
KR102150171B1 (ko) | 2020-08-31 |
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