EP0182359A2 - Installation pour la fabrication des jonctions se succédant dans le temps entre les espaces des ampoules de lampe et sources de pression pour les gaz et/ou sources de vide - Google Patents

Installation pour la fabrication des jonctions se succédant dans le temps entre les espaces des ampoules de lampe et sources de pression pour les gaz et/ou sources de vide Download PDF

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Publication number
EP0182359A2
EP0182359A2 EP85114704A EP85114704A EP0182359A2 EP 0182359 A2 EP0182359 A2 EP 0182359A2 EP 85114704 A EP85114704 A EP 85114704A EP 85114704 A EP85114704 A EP 85114704A EP 0182359 A2 EP0182359 A2 EP 0182359A2
Authority
EP
European Patent Office
Prior art keywords
slide
grooves
channels
face
sources
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.)
Granted
Application number
EP85114704A
Other languages
German (de)
English (en)
Other versions
EP0182359B1 (fr
EP0182359A3 (en
Inventor
Lothar Dipl.-Ing. Vollmer
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0182359A2 publication Critical patent/EP0182359A2/fr
Publication of EP0182359A3 publication Critical patent/EP0182359A3/de
Application granted granted Critical
Publication of EP0182359B1 publication Critical patent/EP0182359B1/fr
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Expired - Lifetime legal-status Critical Current

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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
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels

Definitions

  • the invention relates to a device for producing chronologically successive connections between the cavities of lamp glass bulbs and pressure sources for gases and / or vacuum sources in an order which is necessary for the generation of the cavity state intended for lamp operation, the pressure sources and / or the vacuum sources being included Channels are connected in a fixed lower slide of a slide system, which contains an upper slide that is rotatable relative to the lower slide, in which, depending on the rotational position, opposite openings of the channels in the lower slide are arranged openings of channels to which the cavities of the lamp glass bulbs rotatable with the upper slide are connected.
  • Lamp glass bulbs for example for incandescent lamps, are connected at a certain stage in the production process to hollow glass tubes which protrude like stems and through which the cavities are accessible. Such lamp glass bulbs are also referred to as "stem lamps".
  • the cavities of the “stem lamps” are brought into the condition intended for the later operation of the lamps on so-called pump machines. If the cavity has to be evacuated, the stem lamps are connected to a vacuum source. The stems are then melted or squeezed off. If the cavities with must be filled with a certain gas, they are subjected to a pump purging cycle and then filled with the gas under a certain pressure before the stems are melted or squeezed.
  • the pumping machines are equipped with devices that perform valve functions.
  • slide systems each having a lower slide (also called distributor or stator) and an upper slide (also called rotor or rotor).
  • the slide systems enable the "stem lamps" to be pumped out or rinsed and filled in a sequence dependent on the arrangement of the mouths of the channels in the lower slide.
  • the top and bottom slides each consist of a steel ring which is flat in the surface areas surrounding the mouths of the channels.
  • the corresponding channels in the upper and lower slide face each other. At least during the switchover to other channels, the upper slide rotates relative to the lower slide. However, it is also possible to turn the top slide continuously, with the mouths of the channels in the top and bottom slides only overlapping for a short time.
  • the sliding surfaces of the upper and lower slide are covered with an oil film. At the same time, the friction between the upper and lower slide is reduced.
  • the stems of the “stem lamps” protrude into holders, each of which is surrounded by a cylindrical housing, the so-called “pump socket”.
  • This pump connection is via lines for the respective flushing or filling gas or for vacuum connected to the corresponding channels in the slide valve.
  • the oil of the sealing film can be entrained by the gases, in particular at high speeds of the flushing and filling gases or when blowing out, the so-called "clean blowing".
  • the gases in particular at high speeds of the flushing and filling gases or when blowing out, the so-called "clean blowing".
  • oil will accumulate in the nozzle.
  • stem lamps When filling the "stem lamps” with gas, oil vapors can then occur, which get into the cavity of the lamp glass bulb with the gas. After the stem has melted or been squeezed, there is oil in the closed cavity in this case. When the lamps are switched on, these oil inclusions can increase the risk of the lamps failing prematurely.
  • the invention has for its object to further develop a device of the type described in the introduction such that no oil can get into the cavities of the lamp glass bulb.
  • the object is achieved by the measures described in claim 1.
  • oil is no longer required for the lubrication and sealing of the opposing or briefly overlapping mouths of the channels in the upper and lower slide.
  • the control of the oil consumption and the refilling of oil are eliminated.
  • Ceramic materials preferably made of zirconium dioxide or aluminum oxide, are available which are extremely wear-resistant and combine with the same or different materials have low coefficients of friction, especially in the case of sliding friction.
  • the slide provided with the ceramic surface has two grooves which run close to its outer and inner edges and are open towards the other slide and which are connected via channels to a vacuum source.
  • the channels provided for rinsing and filling are protected in the region of the sliding surfaces of the upper and lower slides from the ingress of air from the atmosphere. This also prevents the contents of the lamp bulb from being adversely affected by undesirable additives in the flushing and filling gases.
  • the ceramic surface is preferably formed by one side of a ceramic disk which is connected to the lower slide.
  • the ceramic disk like the lower slide, is arranged in a stationary manner. For the connecting lines between the grooves in the sliding surface on the ceramic disk and the vacuum source, therefore, no parts that can be moved relative to each other need to be sealed.
  • the ceramic disc is expediently glued to an end face of the lower slide. Therefore, no great effort is required to attach the ceramic disc to the lower slide.
  • the grooves in the lower slide expediently have a larger cross section than the grooves in the ceramic disk. This creates more favorable flow conditions, ie the air sucked into the grooves via the gap between the sliding surfaces of the ceramic disk and the slide valve is drawn off more quickly.
  • a device for the production successively in time Gender connections between the cavity 10 of a lamp glass bulb 12 and a pressure source 14 for a purge gas shown schematically in Fig. 2 and a vacuum source 16,17 also shown schematically in Fig. 1 contains a fixed bottom slide 38 on which an upper part 36 is rotatably arranged.
  • the upper part 36 which is rotatable about a vertical axis 80, has a holder 28, the so-called "pump nozzle", in which the stem 22 of the lamp glass bulb 12 is fastened.
  • Two lines 30, 32 open into the pump connector.
  • the line 30 is provided for the supply of flushing or filling gas to the cavity 10.
  • the cavity 10 is evacuated via the line 32.
  • Channels 50, 52 run in the bottom slide 38, which are each provided for the line of the flushing or filling gas or for the vacuum.
  • the channels 50, 52 are each connected via pipes 54, 56 to the pressure source 14 for the flushing or filling gas and to the vacuum source 16, 17.
  • the mouths of the channels 32 and 52 face each other in the end faces 46, 60, provided that the pumping takes place while the slide valve 36 is stationary.
  • the orifices 48 and 58 face each other during a rinsing or filling step.
  • the period in which the mouths face each other is called the rest period.
  • the upper slide 36 is rotated further until other orifices overlap for the execution of the next method step.
  • the time required for further turning is called the switching time.
  • the sum of the rest and switching times gives the cycle time for the respective process step.
  • the lower slide 38 consists of a ring, for example made of steel, and a disk 64 made of ceramic.
  • the disc is connected to an end face 62 of the lower slide 38.
  • the disk 64 made of ceramic is preferably on the End face 62 glued.
  • the ceramic material of the disk 64 is extremely low-wear and has a low coefficient of friction with other materials.
  • the disk 64 is preferably made of oxide ceramic. Particularly suitable materials are aluminum oxide or zirconium oxide.
  • the channels 50, 52 are continued in the disk 64 through corresponding bores, which are not described in more detail, until they open into the end face 60.
  • the end face 62 has a projecting edge 68 through which the disk 64 is centered and protected against lateral displacement.
  • annular grooves 72, 72a, 74, 74a are provided near the outer edge and on the inner edge adjacent to a bore 70 in the lower slide 38, which are open towards the end face 60.
  • annular grooves 76, 76a, 78, 78a which have approximately the same radial distance from the central axis 80 of the lower slide 38 as the grooves 72, 72a 74, 74a.
  • the grooves 76.76a, 78.78a however, have a larger cross section than the grooves 72.72a 74.74a.
  • the grooves 72.72a and 76.76a and 74.74a and 78.78a are each connected to one another by bores 82 in the disk 64.
  • the holes 82 are evenly spaced along the bottoms of the grooves 72, 72a and 74, 74a.
  • the grooves 76.76a, 78.78a are each connected to a vacuum source 16.17 via bores 84.84a, 86.86a.
  • the end face 60 and the end face 46 touch in the assembled state of the slide system.
  • the end face 46 is pressed against the end face 60 by the upper slide 36 and the parts carried by it under a certain contact force.
  • Both faces 46.60 are flat, for example by grinding.
  • the end faces 46, 60 therefore have only very small gaps. The small amounts of air penetrating into these spaces from the atmosphere are sucked off by the vacuum sources 16, 17 via the grooves 72, 72 a, 74, 74 a.
  • gas quantities penetrating into the interstices from the mouth 58 are drawn off via the grooves 72, 72a, 74, 74a.
  • the grooves 72, 72a, 74, 74a connected to the vacuum sources 16, 17 accordingly provide a particularly good seal between the upper and lower slides 36, 38.
  • the good sliding properties of the ceramic material of the disk 64 make the use of oil for sealing between the upper and lower slides 36, 38 superfluous. Therefore, no oil and no atmospheric gas can get into the cavity 10 during the flushing and filling processes. The difficulties caused by such contaminants are eliminated. A higher lamp quality can therefore be achieved with the device shown in FIGS. 1 to 3. In addition, there is no need for the inspection and refilling work required for oil-sealed slide systems.
  • the upper slide 36 with a ceramic sliding surface, e.g. a disk made of oxide ceramic k is attached to its end face.
  • a ceramic sliding surface e.g. a disk made of oxide ceramic k is attached to its end face.
  • Such a measure can e.g. be made to improve the friction properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
EP85114704A 1984-11-20 1985-11-19 Installation pour la fabrication des jonctions se succédant dans le temps entre les espaces des ampoules de lampe et sources de pression pour les gaz et/ou sources de vide Expired - Lifetime EP0182359B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843442362 DE3442362A1 (de) 1984-11-20 1984-11-20 Vorrichtung zur herstellung zeitlich aufeinanderfolgender verbindungen zwischen den hohlraeumen von lampenglaskolben und druckquellen fuer gase und/oder vakuumquellen
DE3442362 1984-11-20

Publications (3)

Publication Number Publication Date
EP0182359A2 true EP0182359A2 (fr) 1986-05-28
EP0182359A3 EP0182359A3 (en) 1988-10-19
EP0182359B1 EP0182359B1 (fr) 1991-02-27

Family

ID=6250750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114704A Expired - Lifetime EP0182359B1 (fr) 1984-11-20 1985-11-19 Installation pour la fabrication des jonctions se succédant dans le temps entre les espaces des ampoules de lampe et sources de pression pour les gaz et/ou sources de vide

Country Status (4)

Country Link
US (1) US4666416A (fr)
EP (1) EP0182359B1 (fr)
JP (1) JPS61173449A (fr)
DE (2) DE3442362A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19934032A1 (de) * 1999-07-21 2001-02-01 Promatec Gmbh Berlin Verbindungsvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292652A (en) * 1962-12-31 1966-12-20 Gallone Cesare High vacuum tight rotary valve
GB1136800A (en) * 1965-09-11 1968-12-18 Philips Electronic Associated Improvements in or relating to devices for exhausting lamp envelopes and filling them with a gas containing halogen
US3614061A (en) * 1969-03-03 1971-10-19 Wheatley Co Charles Ceramic gate valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE332046A (fr) * 1925-02-21 1900-01-01
US2247513A (en) * 1939-11-09 1941-07-01 Gen Electric Exhausting machine
US2575756A (en) * 1949-10-21 1951-11-20 Gen Electric Exhaust machine
US2764799A (en) * 1951-08-23 1956-10-02 Westinghouse Electric Corp Machine for feeding ferrules to sealedbeam reflectors
US2730280A (en) * 1954-11-05 1956-01-10 Raytheon Mfg Co Machines for evacuating electron discharge devices and the like
US3178241A (en) * 1963-03-18 1965-04-13 Space Technology And Res Corp Lubricationless high-temperature bearing
US3796475A (en) * 1971-09-08 1974-03-12 New Nippon Electric Co Apparatus for manufacturing discharge lamps
JPS5314984A (en) * 1976-07-27 1978-02-10 Toshiba Corp Device for feeding charging gas into bulb

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292652A (en) * 1962-12-31 1966-12-20 Gallone Cesare High vacuum tight rotary valve
GB1136800A (en) * 1965-09-11 1968-12-18 Philips Electronic Associated Improvements in or relating to devices for exhausting lamp envelopes and filling them with a gas containing halogen
US3614061A (en) * 1969-03-03 1971-10-19 Wheatley Co Charles Ceramic gate valve

Also Published As

Publication number Publication date
EP0182359B1 (fr) 1991-02-27
JPS61173449A (ja) 1986-08-05
US4666416A (en) 1987-05-19
EP0182359A3 (en) 1988-10-19
DE3442362A1 (de) 1986-05-22
DE3581892D1 (de) 1991-04-04

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