TW200634360A - Molding method of thick-walled light guide plate and mold therefor - Google Patents

Molding method of thick-walled light guide plate and mold therefor

Info

Publication number
TW200634360A
TW200634360A TW094119057A TW94119057A TW200634360A TW 200634360 A TW200634360 A TW 200634360A TW 094119057 A TW094119057 A TW 094119057A TW 94119057 A TW94119057 A TW 94119057A TW 200634360 A TW200634360 A TW 200634360A
Authority
TW
Taiwan
Prior art keywords
core
thick
cores
light guide
guide plate
Prior art date
Application number
TW094119057A
Other languages
Chinese (zh)
Other versions
TWI412800B (en
Inventor
Kazuhisa Yokoyama
Hideaki Nakashima
Yoji Oki
Fumitoshi Isobe
Atsushi Takeuchi
Nakagawa Takashi
Original Assignee
Japan Steel Works Ltd
Stanley Electric Co Ltd
Fuji Seiki Kk
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
Application filed by Japan Steel Works Ltd, Stanley Electric Co Ltd, Fuji Seiki Kk filed Critical Japan Steel Works Ltd
Publication of TW200634360A publication Critical patent/TW200634360A/en
Application granted granted Critical
Publication of TWI412800B publication Critical patent/TWI412800B/en

Links

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
    • B29C45/70—Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping devices
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into 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
    • 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
    • B29C45/7331—Heat transfer elements, e.g. heat pipes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • 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
    • B29C2045/7393—Heating or cooling of the mould alternately heating and cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

To provide a molding method capable of molding a thick-walled light guide plate of high quality by a short molding cycle. A predetermined amount of a molten resin is charged in the shaping space K constituted of the stamper (8) provided to the core (4) on the cavity side of a fixed mold, the core 23 on the core side of a movable mold and cores 30 and 30 on the peripheral wall side of the movable mold. Then, a valve gate is closed to compress the molten resin by the core 23 on the core side. Transfer properties are enhanced by compression and the molding cycle is shortened. At the time of compression, the temperature of the cores (30 and 30) on the peripheral wall side is made higher than the temperature of the core (4) on the cavity side and the core (23) on the core side. By this constitution, the cooling speed of the cores (30 and 30) on the peripheral wall side becomes slow to enhance a compression effect and the occurrence of a sink is suppressed.
TW094119057A 2004-06-09 2005-06-09 The forming method of thick plate type light guide plate TWI412800B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004171330A JP4087818B2 (en) 2004-06-09 2004-06-09 Method for forming thick light guide plate

Publications (2)

Publication Number Publication Date
TW200634360A true TW200634360A (en) 2006-10-01
TWI412800B TWI412800B (en) 2013-10-21

Family

ID=35584503

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094119057A TWI412800B (en) 2004-06-09 2005-06-09 The forming method of thick plate type light guide plate

Country Status (4)

Country Link
JP (1) JP4087818B2 (en)
KR (1) KR101197419B1 (en)
CN (1) CN100575050C (en)
TW (1) TWI412800B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI508842B (en) * 2011-12-09 2015-11-21 Japan Steel Works Ltd Forming method of thin-walled molded article

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100631336B1 (en) 2006-05-25 2006-10-04 (주)폴리텍 How to remove cavity bubbles in moldings
JP4044608B1 (en) * 2006-12-19 2008-02-06 株式会社名機製作所 Injection compaction method for small light guide plate and small light guide plate
JP4335266B2 (en) * 2007-03-30 2009-09-30 株式会社名機製作所 Light guide plate injection compression molding die and light guide plate injection compression molding method
JP4444980B2 (en) * 2007-04-02 2010-03-31 株式会社日本製鋼所 Mold for molding molded body and method for producing molded body using the same
JP4878584B2 (en) * 2007-08-01 2012-02-15 株式会社名機製作所 Injection compression mold for light guide plate
CN101765489B (en) * 2007-08-28 2013-05-08 Lg电子株式会社 Injection moldings, injection-molding apparatus and method thereof
JP2009125976A (en) * 2007-11-20 2009-06-11 Nippon Yakin Kogyo Co Ltd Mold for resin molding and molding method
JP4979627B2 (en) * 2008-03-31 2012-07-18 株式会社ホンダロック Resin molding method and mold apparatus for resin molding
US8425222B2 (en) * 2009-02-25 2013-04-23 Konica Minolta Opto, Inc. Die assembly for injection molding
KR101384323B1 (en) * 2010-10-07 2014-04-10 주식회사 엘지화학 Molding device for injection compression molding and method using the same
JP5290388B2 (en) * 2010-12-20 2013-09-18 株式会社日本製鋼所 Thin-walled molding method
JP2012179783A (en) * 2011-03-01 2012-09-20 Seiko Epson Corp Injection mold and injection molding method
JP2014113930A (en) * 2012-12-10 2014-06-26 Mitsubishi Chemicals Corp Vehicle structural member for mounting solar cell module and method for manufacturing the same
CN103286922B (en) * 2013-06-14 2015-06-03 东莞市奕东电子有限公司 Injection molding die of backlight guide plate and injection molding method
CN103454716A (en) * 2013-08-27 2013-12-18 北京京东方光电科技有限公司 Light guide plate, manufacturing method thereof, backlight module and display device
CN104690917B (en) * 2015-03-04 2017-03-01 上海小糸车灯有限公司 A kind of LED-light guide component double injection corner flowing process method
CN104999622B (en) * 2015-06-29 2017-06-13 上海化工研究院有限公司 A kind of thermoplastic resin heavy section casting product mold system
CN109249578A (en) * 2017-07-13 2019-01-22 城翊科技有限公司 Thick plastic injection molding method and mold thereof
CN110126202A (en) * 2019-05-30 2019-08-16 开平市盈光机电科技有限公司 A kind of mold with active type chamber
CN110355944B (en) * 2019-05-30 2024-01-30 开平市盈光机电科技有限公司 Mobile phone rear cover blank forming die with movable cavity adjusted through spring and comprising middle frame
CN110126204A (en) * 2019-05-30 2019-08-16 开平市盈光机电科技有限公司 A kind of cell phone rear cover embryo material molding die including center of included hydraulic device
CN110126203A (en) * 2019-05-30 2019-08-16 开平市盈光机电科技有限公司 A kind of molding die of the cell phone rear cover embryo material including center
CN110126201A (en) * 2019-05-30 2019-08-16 开平市盈光机电科技有限公司 A kind of movable type cavity mould with elastic device
CN112265219A (en) * 2020-11-02 2021-01-26 华域视觉科技(上海)有限公司 Production frock of double-colored silica gel optical member

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07117144A (en) * 1993-10-22 1995-05-09 Dainippon Printing Co Ltd Production of light guide plate for plane light source
JPH08160226A (en) * 1994-12-07 1996-06-21 Ohtsu Tire & Rubber Co Ltd :The Method and device for manufacturing light guide plate
JP3601463B2 (en) 2000-05-26 2004-12-15 住友化学工業株式会社 Method for manufacturing large light guide plate having pattern
JP4684423B2 (en) * 2001-01-17 2011-05-18 三井化学株式会社 Synthetic resin injection mold and injection molding method using the same
JP2002283352A (en) 2001-03-23 2002-10-03 Ricoh Co Ltd Method for manufacturing plastic optical element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI508842B (en) * 2011-12-09 2015-11-21 Japan Steel Works Ltd Forming method of thin-walled molded article

Also Published As

Publication number Publication date
KR101197419B1 (en) 2012-11-05
CN1727169A (en) 2006-02-01
CN100575050C (en) 2009-12-30
TWI412800B (en) 2013-10-21
KR20060048245A (en) 2006-05-18
JP2005349646A (en) 2005-12-22
JP4087818B2 (en) 2008-05-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees