WO2013129762A1 - Appareil pour la fabrication d'articles moulés par injection et procédé de fabrication d'articles moulés par injection utilisant cet appareil - Google Patents

Appareil pour la fabrication d'articles moulés par injection et procédé de fabrication d'articles moulés par injection utilisant cet appareil Download PDF

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Publication number
WO2013129762A1
WO2013129762A1 PCT/KR2012/010890 KR2012010890W WO2013129762A1 WO 2013129762 A1 WO2013129762 A1 WO 2013129762A1 KR 2012010890 W KR2012010890 W KR 2012010890W WO 2013129762 A1 WO2013129762 A1 WO 2013129762A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
movable member
cooling
molded article
injection molded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2012/010890
Other languages
English (en)
Korean (ko)
Inventor
김월룡
오수석
강봉택
류광수
박혜민
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020120140910A external-priority patent/KR101409771B1/ko
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Priority to CN201280028804.1A priority Critical patent/CN103608161B/zh
Publication of WO2013129762A1 publication Critical patent/WO2013129762A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B29C45/26—Moulds
    • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow channels
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C2045/7343—Heating or cooling of the mould heating or cooling different mould parts at different temperatures

Definitions

  • the cause of the defect is the temperature deviation of the specific part, which is more severe because the mold surface temperature of the specific part increases as the number of injection molding increases.
  • the higher the injection pressure or holding pressure the higher the copying rate of the mold surface, the more severe defects appear on the exterior surface. That is, in the case of a high gloss surface, the glossiness of other parts is increased, but the glossiness of the specific area in question is lowered, causing a difference in glossiness. The degree increases to cause gloss difference.
  • the cooling passage may have an inlet and an outlet
  • the cooling fluid may be composed of a circulation passage configured inside the movable member such that the cooling fluid is introduced into the movable member through the inlet and then discharged through the outlet.
  • the movable member may be configured to be a sliding pin configured to slide inside the second mold to assist in taking out the injection molded article.
  • the movable member is composed of a boss core constituting the boss shape of the injection molded article, the cooling unit for use in cooling the second mold and a hot fin thermally connected to the boss core It may be composed of a cooling tube provided in the second mold and disposed close to the hot fin.
  • Figure 4 is a side cross-sectional view of the injection molded article manufacturing apparatus according to a second embodiment of the present invention.
  • Figure 5 is a side cross-sectional view of the injection molded article manufacturing apparatus according to a third embodiment of the present invention.
  • Figure 6 is a side cross-sectional view of the injection molded article manufacturing apparatus according to a fourth embodiment of the present invention.
  • the first mold 110 may be combined with the second mold 120 to be described later to form a cavity.
  • the first mold 110 may be configured as a stationary mold having a fixed position without moving, but is not limited thereto and may be configured as a movable movable mold.
  • the movable member 140 may be inserted into a groove formed in the second mold 120 and configured to be slidable in the groove.
  • the movable member 140 may be provided with a temperature sensor (not shown) capable of measuring the temperature of the movable member 140.
  • FIG. 5 is a side sectional view of an injection molded article manufacturing apparatus 100 according to a third embodiment of the present invention.
  • the slide core 141 may be inserted into the second mold 120 so that the front surface of the slide core 141 may constitute a partial surface of the cavity.
  • the cooling unit 200 may include a separation plate 220 for separating the internal space S formed in the slide core 141.
  • the separation plate 220 may partition the internal space S of the slide core 141 into an inlet 212 and an outlet 214.
  • the inlet portion 212 corresponds to a portion of the cooling fluid is introduced into the inner space (S) of the slide core 141
  • the outlet portion 214 is the inner space (S) of the introduced cooling fluid is the slide core (141) )
  • liquid or gas may be used as the cooling fluid, and the temperature of the slide core 141 measured by a temperature sensor (not shown) provided in the slide core 141 may be used.
  • the temperature of the slide core 141 can be controlled by adjusting the flow rate of the cooling fluid circulated in the internal space S of the slide core 141 based on the flow rate.
  • the third embodiment of the present invention can be applied to the case where the slide core 141 is a medium slide core 141 small enough to not form a flow path therein as in the first embodiment.
  • the periphery of the injection hole portion of the injection nozzle 235 may have a shape recessed in the surface of the slide core 141.
  • the gap 125 between the slide core 141 and the second mold 120 is narrowed to prevent the problem that the injection hole of the injection nozzle 235 may be closed.
  • the fourth embodiment of the present invention can be applied to the case where the slide core 141 is a small slide core 141 small enough to not form a flow path through which liquid can flow.
  • the cooling unit 200 may include an air channel 230 provided in the second mold 120 and an injection nozzle 235 connected to the air channel 230 in the second mold 120.
  • the injection nozzle 235 may be connected to the air channel 230 in the second mold 120 to form an injection hole in the direction of the slide core 141. Through this, the injection nozzle 235 may inject the cooling gas introduced into the air channel 230 to the slide core 141.
  • a gap 125 may be formed between the slide core 141 and the second mold 120 for ease of discharge of the cooling gas.
  • the injection nozzle 235 formed in the second mold 120 may be inclined with respect to the surface of the slide core 141.
  • Example 5 of the present invention is a cooling gas circulated in the air channel 230 based on the temperature of the slide core 141 measured by a temperature sensor (not shown) provided in the slide core 141 similar to the fourth embodiment
  • the temperature of the slide core 141 may be adjusted by adjusting the amount of cooling gas injected to the slide core 141.
  • the movable member 140 is composed of the take-out pin 142, not the slide core 141, in general, the take-off pin 142 is a slide core ( 141) smaller in size.
  • the cooling unit 200 of the sixth embodiment may have a configuration substantially the same as that of the cooling unit 200 used for cooling the micro slide core 141 as in the fifth embodiment.
  • the cooling unit 200 may be composed of an air channel 230 and the injection nozzle 235 connected to the air channel 230 formed in the blowout pin 142.
  • the injection nozzle 235 may be connected to the air channel 230 in the blowout pin 142 and form an injection hole on the outer surface of the blowout pin 142. In this way, the injection nozzle 235 may inject the cooling gas introduced into the air channel 230 into the gap 125 between the second mold 120 and the blowout pin 142.
  • the opening / closing member 170 provided with elasticity in the hinge coupling portion may automatically close the injection pipe 150 and open the discharge pipe 160 by elasticity.
  • the gas discharged from the gas vent insertion core 143 may be discharged to the outside through the gas supply pipe 240 and the discharge pipe 160.
  • FIG. 11 is a side sectional view of an injection molded article manufacturing apparatus 100 according to a ninth embodiment of the present invention.
  • the gas vent blow-out pin 144 may be configured to slide inside the second mold 120 to assist in taking out the injection molded article.
  • the gas vent blow-out pin 144 may be composed of a pipe through which the gas can be distributed, the venting portion 145 of the microporous material may be provided at the front end portion.
  • the cooling unit 200 may be composed of a hot fin 250 thermally connected to the boss core 146, and a cooling tube 130 disposed in close proximity to the hot fin 250.
  • An injection molded article manufacturing method corresponds to a method of manufacturing an injection molded article using the injection molded article manufacturing apparatus 100 according to the embodiments of the present invention described above with reference to FIGS. 3 to 12. .
  • the injection material R is injected into the formed cavity (S120).
  • the cooling of the movable member 140 may be performed in a state in which the first mold 110 and the second mold 120 are combined.
  • cooling of the movable member 140 is performed while the first mold 110 and the second mold 120 are separated from each other, and the first mold 110 and Cooling of the movable member 140 may be stopped before the second mold 120 is molded.
  • This is the injection molded article manufacturing method corresponding to this case in Examples 4 to 7 of the injection molded article manufacturing apparatus 100 according to the present invention described above.
  • the injection molded article manufacturing method is a temperature sensor (not shown) and the temperature that can measure the temperature of the second mold 120 and the movable member 140
  • the control unit (not shown) connected to the sensor may be configured to automatically adjust the temperature of the movable member 140 and the second mold 120 in the injection molding process.

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

Abstract

L'invention porte sur un appareil pour fabriquer des articles moulés par injection qui est apte à rendre minimal une différence de brillance sur les surfaces des articles moulés par injection fabriqués et sur un procédé de fabrication d'articles moulés par injection qui utilise ledit appareil. L'appareil destiné à fabriquer des articles moulés par injection selon la présente invention comprend : un premier moule ; un second moule formant une empreinte en combinaison avec le premier moule ; un élément mobile inséré dans un premier côté du premier moule ou du second moule de façon à constituer une partie de la forme d'un article moulé par injection ou à faciliter l'extraction d'un article moulé par injection, la chaleur dégagée par la surface d'un matériau de moulage par injection étant transmise à l'élément mobile pendant le processus de moulage par injection ; et une unité de refroidissement qui refroidit l'élément mobile pendant le processus de moulage par injection de façon à réduire la différence de température entre le premier moule ou le second moule et l'élément mobile.
PCT/KR2012/010890 2012-02-27 2012-12-14 Appareil pour la fabrication d'articles moulés par injection et procédé de fabrication d'articles moulés par injection utilisant cet appareil Ceased WO2013129762A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280028804.1A CN103608161B (zh) 2012-02-27 2012-12-14 制造注塑成型件的装置及用该装置制造注塑成型件的方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20120019427 2012-02-27
KR10-2012-0019427 2012-02-27
KR10-2012-0140910 2012-12-06
KR1020120140910A KR101409771B1 (ko) 2012-02-27 2012-12-06 사출 성형품 제조장치 및 이를 사용한 사출 성형품 제조방법

Publications (1)

Publication Number Publication Date
WO2013129762A1 true WO2013129762A1 (fr) 2013-09-06

Family

ID=49082924

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/010890 Ceased WO2013129762A1 (fr) 2012-02-27 2012-12-14 Appareil pour la fabrication d'articles moulés par injection et procédé de fabrication d'articles moulés par injection utilisant cet appareil

Country Status (1)

Country Link
WO (1) WO2013129762A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105904619A (zh) * 2015-02-25 2016-08-31 矢崎总业株式会社 树脂成型金属模具和树脂成型金属模具制造方法
CN110406057A (zh) * 2019-08-30 2019-11-05 珠海三威注塑模具有限公司 降低注塑件内应力设备及注塑生产系统
CN116787706A (zh) * 2022-03-18 2023-09-22 瑞皇精密工业股份有限公司 模仁结构
CN118082120A (zh) * 2024-04-11 2024-05-28 正川(珠海)科技有限公司 一种新型汽车尾门液压杆套注塑模具
CN118493778A (zh) * 2024-07-12 2024-08-16 泉州尚嘉模具有限公司 一种双色注塑螺纹模具
CN120828515A (zh) * 2025-09-11 2025-10-24 开平市百汇模具科技有限公司 一种塑胶模具用智能温控装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735021U (ja) * 1993-12-20 1995-06-27 積水化学工業株式会社 射出成形金型
KR20020082456A (ko) * 2000-01-13 2002-10-31 임숙자 금형표면의 순간 가열방법 및 그 시스템
JP2004249654A (ja) * 2003-02-21 2004-09-09 Mitsubishi Electric Corp 射出成形用金型
KR20080023516A (ko) * 2006-09-11 2008-03-14 윤병흔 냉각형 코어 및 그 냉각방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735021U (ja) * 1993-12-20 1995-06-27 積水化学工業株式会社 射出成形金型
KR20020082456A (ko) * 2000-01-13 2002-10-31 임숙자 금형표면의 순간 가열방법 및 그 시스템
JP2004249654A (ja) * 2003-02-21 2004-09-09 Mitsubishi Electric Corp 射出成形用金型
KR20080023516A (ko) * 2006-09-11 2008-03-14 윤병흔 냉각형 코어 및 그 냉각방법

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105904619A (zh) * 2015-02-25 2016-08-31 矢崎总业株式会社 树脂成型金属模具和树脂成型金属模具制造方法
CN110406057A (zh) * 2019-08-30 2019-11-05 珠海三威注塑模具有限公司 降低注塑件内应力设备及注塑生产系统
CN116787706A (zh) * 2022-03-18 2023-09-22 瑞皇精密工业股份有限公司 模仁结构
CN118082120A (zh) * 2024-04-11 2024-05-28 正川(珠海)科技有限公司 一种新型汽车尾门液压杆套注塑模具
CN118493778A (zh) * 2024-07-12 2024-08-16 泉州尚嘉模具有限公司 一种双色注塑螺纹模具
CN120828515A (zh) * 2025-09-11 2025-10-24 开平市百汇模具科技有限公司 一种塑胶模具用智能温控装置

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