IT1251416B - Processo di fabbricazione di una maschera di selezione dei colori per un tubo a raggi catodici e dispositivo per la realizzazione di tale processo - Google Patents

Processo di fabbricazione di una maschera di selezione dei colori per un tubo a raggi catodici e dispositivo per la realizzazione di tale processo

Info

Publication number
IT1251416B
IT1251416B ITMI912807A ITMI912807A IT1251416B IT 1251416 B IT1251416 B IT 1251416B IT MI912807 A ITMI912807 A IT MI912807A IT MI912807 A ITMI912807 A IT MI912807A IT 1251416 B IT1251416 B IT 1251416B
Authority
IT
Italy
Prior art keywords
realization
ray tube
cathode ray
color selection
selection mask
Prior art date
Application number
ITMI912807A
Other languages
English (en)
Inventor
Paolo Spina
Carlo Luigi Fonda
Marco Visconti
Eric Maurice Jego
Original Assignee
Videocolor Spa
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 Videocolor Spa filed Critical Videocolor Spa
Priority to ITMI912807A priority Critical patent/IT1251416B/it
Publication of ITMI912807A0 publication Critical patent/ITMI912807A0/it
Priority to US07/910,796 priority patent/US5306190A/en
Priority to KR1019920019310A priority patent/KR960001328B1/ko
Priority to DE4235555A priority patent/DE4235555C2/de
Priority to PL92296315A priority patent/PL169312B1/pl
Priority to JP4309470A priority patent/JP2662758B2/ja
Publication of ITMI912807A1 publication Critical patent/ITMI912807A1/it
Application granted granted Critical
Publication of IT1251416B publication Critical patent/IT1251416B/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Il processo consiste nel sagomare la maschera (5) in una pressa comportante uno stampo (1) ed un controstampo (9) dopo uno stadio di messa a temperatura, effettuato in una camera di messa in forma (10) grazie alla circolazione di un gas caldo, sotto pressione, iniettato per il tramite delle entrate (11) situate sulle pareti del controstampo. Il dispositivo di messa in forma comprende un sistema di ripartizione (12) del gas caldo destinato ad omogeneizzare il riscaldamento della superficie della maschera.
ITMI912807A 1991-10-23 1991-10-23 Processo di fabbricazione di una maschera di selezione dei colori per un tubo a raggi catodici e dispositivo per la realizzazione di tale processo IT1251416B (it)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ITMI912807A IT1251416B (it) 1991-10-23 1991-10-23 Processo di fabbricazione di una maschera di selezione dei colori per un tubo a raggi catodici e dispositivo per la realizzazione di tale processo
US07/910,796 US5306190A (en) 1991-10-23 1992-07-09 Forming process for a sheet of perforated metal and process implementation device
KR1019920019310A KR960001328B1 (ko) 1991-10-23 1992-10-21 음극선관용 컬러 선택 마스크의 제조방법 및 그 방법을 실행하는 장치
DE4235555A DE4235555C2 (de) 1991-10-23 1992-10-22 Verfahren zum Formen einer Farbauswahlmaske einer Kathodenstrahlröhre und Anordnung zur Durchführung
PL92296315A PL169312B1 (pl) 1991-10-23 1992-10-22 Sposób i urzadzenie do ksztaltowania perforowanego arkusza metalowego PL PL PL PL PL PL
JP4309470A JP2662758B2 (ja) 1991-10-23 1992-10-23 有孔金属シートの成形方法及び装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI912807A IT1251416B (it) 1991-10-23 1991-10-23 Processo di fabbricazione di una maschera di selezione dei colori per un tubo a raggi catodici e dispositivo per la realizzazione di tale processo

Publications (3)

Publication Number Publication Date
ITMI912807A0 ITMI912807A0 (it) 1991-10-23
ITMI912807A1 ITMI912807A1 (it) 1993-04-23
IT1251416B true IT1251416B (it) 1995-05-09

Family

ID=11360931

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI912807A IT1251416B (it) 1991-10-23 1991-10-23 Processo di fabbricazione di una maschera di selezione dei colori per un tubo a raggi catodici e dispositivo per la realizzazione di tale processo

Country Status (6)

Country Link
US (1) US5306190A (it)
JP (1) JP2662758B2 (it)
KR (1) KR960001328B1 (it)
DE (1) DE4235555C2 (it)
IT (1) IT1251416B (it)
PL (1) PL169312B1 (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6510601B1 (en) * 2000-03-20 2003-01-28 The Boeing Company Invar forming method for making tooling
JP2004050230A (ja) * 2002-07-19 2004-02-19 Uchiyama Mfg Corp 金属板のプレス加工方法
US7086268B2 (en) * 2004-03-16 2006-08-08 Ford Global Technologies, Llc Apparatus and method for removing and cooling a part from a forming tool
US9216850B2 (en) 2006-09-26 2015-12-22 Intercontinental Great Brands Llc Rupturable substrate
MX2009002954A (es) * 2006-09-26 2009-03-31 Cadbury Adams Usa Llc Empaque de burbujas rompible.
US8671729B2 (en) * 2010-03-02 2014-03-18 GM Global Technology Operations LLC Fluid-assisted non-isothermal stamping of a sheet blank
JP6012192B2 (ja) * 2012-02-08 2016-10-25 三菱重工業株式会社 超合金部材の曲げ加工方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152384A (en) * 1960-05-17 1964-10-13 Itt Method of forming bowl shaped screen for electron discharge tubes
US3234055A (en) * 1962-11-06 1966-02-08 Selas Corp Of America Method of uniformly heating metal pieces
DE1241405B (de) * 1964-09-18 1967-06-01 Kannegiesser & Co Maschinenfab Formkoerperbuegelpresse zum Heissverkleben von Bekleidungsstueckteilen od. dgl.
US3440858A (en) * 1964-09-28 1969-04-29 Intercontinental Mfg Co Inc Forming apparatus
US3345846A (en) * 1966-08-01 1967-10-10 Selas Corp Of America Metal heating
JPS59200721A (ja) * 1983-04-27 1984-11-14 Toshiba Corp シヤドウマスクの製造方法
EP0179506B1 (en) * 1984-09-28 1989-08-02 Koninklijke Philips Electronics N.V. Method of drape drawing a shadow mask for a colour display tube and device for such a method
NL8503087A (nl) * 1985-11-11 1987-06-01 Philips Nv Werkwijze voor het in vorm trekken van een schaduwmasker voor een kleurenbeeldbuis, schaduwmasker vervaardigd volgens genoemde werkwijze en kleurenbeeldbuis voorzien van zulk een schaduwmasker.
NL8600141A (nl) * 1986-01-23 1987-08-17 Philips Nv Werkwijze voor het vervaardigen van een schaduwmasker, schaduwmasker vervaardigd volgens zulk een werkwijze en kleurenbeeldbuis voorzien van zulk een schaduwmasker.
JP2549625B2 (ja) * 1986-05-19 1996-10-30 株式会社東芝 カラ−受像管用シヤドウマスクの温間成形装置
JPS6363532A (ja) * 1986-09-05 1988-03-19 Toshiba Corp 温間プレス成形金型

Also Published As

Publication number Publication date
PL296315A1 (en) 1993-05-04
KR960001328B1 (ko) 1996-01-26
US5306190A (en) 1994-04-26
JPH05208223A (ja) 1993-08-20
JP2662758B2 (ja) 1997-10-15
ITMI912807A0 (it) 1991-10-23
DE4235555C2 (de) 1998-02-05
ITMI912807A1 (it) 1993-04-23
KR930008927A (ko) 1993-05-22
PL169312B1 (pl) 1996-06-28
DE4235555A1 (de) 1993-04-29

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971029