EP0317391A1 - Dispositif de maintien en position d'une pièce de forme sensiblement parallélépipédique - Google Patents

Dispositif de maintien en position d'une pièce de forme sensiblement parallélépipédique Download PDF

Info

Publication number
EP0317391A1
EP0317391A1 EP88402805A EP88402805A EP0317391A1 EP 0317391 A1 EP0317391 A1 EP 0317391A1 EP 88402805 A EP88402805 A EP 88402805A EP 88402805 A EP88402805 A EP 88402805A EP 0317391 A1 EP0317391 A1 EP 0317391A1
Authority
EP
European Patent Office
Prior art keywords
fixed
support
base
support elements
support element
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.)
Withdrawn
Application number
EP88402805A
Other languages
German (de)
English (en)
French (fr)
Inventor
Arturo Sbordone
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.)
Videocolor SA
Original Assignee
Videocolor SA
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 SA filed Critical Videocolor SA
Publication of EP0317391A1 publication Critical patent/EP0317391A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S269/00—Work holders
    • Y10S269/908—Work holder for cathode-ray tubes

Definitions

  • the present invention relates to a device for holding in position a part of substantially rectangular shape, more particularly, a device for holding in position the screens of cathode-ray tubes.
  • Such position holding devices or screen clamping devices can be used at any point in the production chain. However, they are mainly used in rooms for depositing luminescent substances on the screen.
  • the devices for holding in position the cathode ray tube screens currently used consist essentially of a base 1 which can be, for example, a rectangular frame whose two long sides each have two fixed support points 2 intended to receive the front surface of the screen.
  • a first support element constituted by a vertical post 3 on which an arm 4 is fixed perpendicularly carrying at each end a sleeve 5.
  • the sleeve 5 is preferably made of an elastic material such as rubber.
  • On the other short side of the base 1 is mounted for rotation about the axis A a second support element.
  • This second support element is constituted by a vertical post 3 ′ at the upper end of which is fixed perpendicularly an arm 4 ′ also comprising at its two ends a sleeve 5 ′ made of an elastic material.
  • the base 1 comprises a hub intended to receive a vertical shaft 12.
  • This vertical shaft is fixed on an operating head.
  • this operating head essentially comprises a frame 8 on which is fixed a perpendicular console 9.
  • a hollow sleeve 11 At the end of the console is mounted, pivotally about the axis 10, a hollow sleeve 11.
  • L 'shaft 12 is inserted into the sleeve 11. It passes through the hub 7 and is fixed in position by means of a screw system.
  • This system allows the adjustment of the working height of the screen.
  • working height is meant the distance between the pivot point 10 and the plane P determining the weld edge of the screen on the cone. This device can only function correctly with screens having all the same dimensions.
  • the object of the present invention is to remedy the drawbacks mentioned above by proposing a new device for holding in position for parts of substantially parallelepiped shape such as screens for cathode ray tubes.
  • the subject of the present invention is a device for holding in position a part of substantially parallelepiped shape of the type comprising, fixed to a base, a support device on which the part comes to rest and at least two support elements coming from clamp the part on two opposite sides, characterized in that the two support elements are fixed on a deformable quadrilateral so as to have between the two support elements a continuously variable spacing.
  • the deformable quadrilateral is constituted by two arms of the same length articulated in their middle on the base and by two longitudinal members articulated respectively at the opposite ends of the two arms, a support element being fixed at one end d 'a spar while the other support element is fixed to the other end of the other spar.
  • the device further comprises means urging the two support elements in their position of minimum spacing.
  • This means urging the two support elements in their minimum spacing position consists of at least one spring fixed between the two support elements.
  • the means urging the two support elements in their position of minimum spacing consists of two springs each fixed between a support element and the end of the beam of the other support element.
  • the support device comprises a means for pre-positioning the part integral with the base and at least three support points fixed on the base so as to be able to move vertically.
  • each fulcrum is provided at the end of a lever articulated on the base, the position of said lever being fixed by a stop secured to one of the side members.
  • the device for holding in position essentially comprises a base 20.
  • This base has a hub 20 ′ allowing the passage of the shaft of the operating head, and a device 20 ⁇ allowing the tightening of the shaft inside the hub.
  • two arms 21 and 21 ′ of the same length are articulated in the middle at each end of the base 20 as shown by the points 22 and 22 ′ in FIG. 2.
  • two side members 23 and 23 ′ are articulated respectively at the opposite ends of the two arms 21 and 21 ′ so as to form a deformable quadrilateral.
  • a perpendicular arm 24 is fixed at the end of the spar 23 located on the side of the arm 21 ′.
  • a vertical post 25 which supports in its middle a horizontal arm 26 at each end of which sleeves are mounted 27 made of an elastic material such as rubber.
  • These elements 24, 25, 26 and 27 form a first support element.
  • a second support element consisting of the arm 24 ′, the post 25 ′, the arm 26 ′, and two sleeves 27 ′, is mounted at the end of the beam 23 ′ located on the side of the arm 21
  • two springs 28 and 28 ′ are provided respectively between the arm 24 and the opposite end of the spar 23 ′ or between the arm 24 ′ and the opposite end of the spar 23. These two springs keep the two support elements in their position of minimum spacing as will be explained below.
  • the positioning of the screen E is carried out in the following manner.
  • This thrust exerted on one of the beams causes a movement in the opposite direction of the other beam, which separates the two support elements from one another. It is then possible to introduce the screen E between these two support elements.
  • the return force of the springs 28 and 28 ′ brings the two support elements in contact with the skirt of the screen E.
  • the two support elements move symmetrically and by the same distance relative to the axis of the device which corresponds to the axis of the operating head. Therefore, if the screen E is centered correctly in the device, there is no risk of sliding between the support points and the glass. On the other hand, such a device can adapt to any screen size without centering problem due to this symmetrical displacement.
  • the position holding device further comprises a support device on which the part comes to rest before it is clamped between the two support elements.
  • This support device comprises a means for pre-positioning the part secured to the base. As shown in Figures 2 and 3, this pre-positioning means is constituted by two crosspieces 30 and 30 'fixed on the base 20. At each end of the crosspieces is fixed a support plate 31, 31'. The four support plates 31, 31 ′ are parallel to the side members 23 and 23 ′. On the other hand, to properly receive the screen E, the upper surface of the support plates have recesses which adapt to the front surface of the screen.
  • the device for holding in position comprises four support points 32.
  • each support point is each fixed to the end of a lever 33 the other end of which is pivotally mounted on the 'base 20.
  • the four support points are positioned on the base such that two support points are parallel to the side members 23 and two other support points are parallel to the side members 23'.
  • each spar has two stop elements 34. The stop elements are positioned on the spars so that, in the clamping position, the lower surface of each lever 33 abuts against one of the elements 34. From this done, the height of the support points 32 will depend on the spacing between the two beams. By correctly profiling the lower surface of the levers 33, it is therefore possible to adjust the height of the support points so as to obtain the same working height whatever the dimensions of the screen E used.
  • the present invention has been described with reference to a screen for cathode ray tubes; it is obvious to those skilled in the art that the device of the present invention can also be used for clamping all parts of substantially parallelepidedic shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Jigs For Machine Tools (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
EP88402805A 1987-11-13 1988-11-08 Dispositif de maintien en position d'une pièce de forme sensiblement parallélépipédique Withdrawn EP0317391A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8715672 1987-11-13
FR8715672A FR2623328B1 (fr) 1987-11-13 1987-11-13 Dispositif de maintien en position d'une piece de forme sensiblement parallelepipedique

Publications (1)

Publication Number Publication Date
EP0317391A1 true EP0317391A1 (fr) 1989-05-24

Family

ID=9356738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402805A Withdrawn EP0317391A1 (fr) 1987-11-13 1988-11-08 Dispositif de maintien en position d'une pièce de forme sensiblement parallélépipédique

Country Status (6)

Country Link
US (1) US4907999A (ja)
EP (1) EP0317391A1 (ja)
JP (1) JPH01153233A (ja)
KR (1) KR890008884A (ja)
CN (1) CN1033124A (ja)
FR (1) FR2623328B1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510547A1 (en) * 1991-04-23 1992-10-28 Sony Corporation Cathode ray tube positioning device

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3848102B2 (ja) * 2001-05-22 2006-11-22 富士通メディアデバイス株式会社 電子デバイスの封止装置及びその封止方法
US6634915B2 (en) * 2001-06-07 2003-10-21 Sony Corporation Apparatus and method for rotating and inspecting cathode-ray tube panels
CN100496884C (zh) * 2002-08-19 2009-06-10 Uht株式会社 工件保持装置
CN101839388B (zh) * 2010-05-18 2011-09-07 河海大学 一种适于工字形钢架结构的仪器安装平台
CN102620129B (zh) * 2012-04-10 2013-12-11 肯岦（上海）实业有限公司 一种支撑架
CN109386693B (zh) * 2018-10-19 2020-10-16 惠安县锋创商贸有限公司 船舶吊装托架自动锁紧支撑装置
CN113581744B (zh) * 2021-07-16 2022-11-08 淮北合众机械设备有限公司 一种可实现快速检修更换滚筒的磁悬浮式缓冲床

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500213A1 (fr) * 1981-02-19 1982-08-20 Rca Corp Dispositif pour appliquer une peinture conductrice sur les elements de support du panneau frontal d'un cinescope en couleur
FR2536907A1 (fr) * 1982-11-26 1984-06-01 Hitachi Ltd Palette utilisee dans la fabrication de tubes a rayons cathodiques pour images en couleurs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1111878A (en) * 1910-11-28 1914-09-29 Morgan Construction Co Wire-gripping mechanism.
US4133570A (en) * 1977-07-22 1979-01-09 B. V. Nederlandse Kraanbouw Maatschappij Nkm Hoisting apparatus having improved clamping means
US4258928A (en) * 1977-12-12 1981-03-31 Teledyne, Inc. Precision positioning device
US4480181A (en) * 1982-12-23 1984-10-30 Fisher Charles R Card capture device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500213A1 (fr) * 1981-02-19 1982-08-20 Rca Corp Dispositif pour appliquer une peinture conductrice sur les elements de support du panneau frontal d'un cinescope en couleur
FR2536907A1 (fr) * 1982-11-26 1984-06-01 Hitachi Ltd Palette utilisee dans la fabrication de tubes a rayons cathodiques pour images en couleurs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510547A1 (en) * 1991-04-23 1992-10-28 Sony Corporation Cathode ray tube positioning device
US5194028A (en) * 1991-04-23 1993-03-16 Sony Corporation Cathode ray tube positioning device

Also Published As

Publication number Publication date
US4907999A (en) 1990-03-13
FR2623328B1 (fr) 1990-02-16
KR890008884A (ko) 1989-07-13
CN1033124A (zh) 1989-05-24
FR2623328A1 (fr) 1989-05-19
JPH01153233A (ja) 1989-06-15

Similar Documents

Publication Publication Date Title
EP1166687B1 (fr) Présentoir de marchandises
FR2770292A1 (fr) Dispositif de pesage de recipients par prehension en porte-a-faux
FR2589588A1 (fr) Appareil de polissage de fibres optiques mutiples
CH691045A5 (fr) Procédé pour l'orientation de plusieurs pièces cristallines posées côte à côte sur un support de découpage en vue d'une découpe simultanée dans une machine de découpage et dispositif pour la
FR2779677A1 (fr) Appareil manuel a couper les carreaux
EP0317391A1 (fr) Dispositif de maintien en position d'une pièce de forme sensiblement parallélépipédique
EP0080960B1 (fr) Dispositif à mâchoires orientables, adaptable sur tout support pour assurer de manière stable un serrage, un assemblage, un écartement ou un maintien en position de pièces de formes et dimensions quelconques
WO1998028110A1 (fr) Outil pilote de centrage et serrage
FR2629003A1 (fr) Dispositif pour compenser des tolerances de position
FR2845959A1 (fr) Appareil de travail guide a la main.
FR2527965A1 (fr) Dispositif de guidage en translation
EP0551263B1 (fr) Procede et dispositif pour animer une surface d'un mouvement de va-et-vient dans un plan
FR2612100A1 (fr) Dispositif de blocage rentrant, pour mandrin de tour ou analogue
EP0589771A1 (fr) Dispositif de fabrication de cartes à puces
FR2636554A1 (fr) Dispositif de soudage de toles ou analogues par un faisceau laser
FR2511910A1 (fr) Machine a souder sous vide utilisant un faisceau d'energie
FR2494399A1 (fr) Support reglable
EP0041414B1 (fr) Presse-étau perfectionnée
EP0636448B1 (fr) Unité d'indexation précise d'une palette dans le référentiel d'un poste de travail
FR2639922A1 (fr) Dispositif extensible de stockage d'objets plats
FR2491420A1 (fr) Chariot individuel repliable
BE1006875A5 (fr) Mecanisme echangeur de stylets dans une machine a dessiner automatique.
EP0839605B1 (fr) Porte-monture de lunettes
EP0421117A1 (fr) Tête d'usinage à faisceau laser
CA1326246C (fr) Dispositif de serrage de cadres

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT NL

17P Request for examination filed

Effective date: 19890606

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19910119

R18W Application withdrawn (corrected)

Effective date: 19910119