EP1169135A1 - Appareil de distribution a actionnement electrique et procede de distribution de liquide visqueux - Google Patents

Appareil de distribution a actionnement electrique et procede de distribution de liquide visqueux

Info

Publication number
EP1169135A1
EP1169135A1 EP00923301A EP00923301A EP1169135A1 EP 1169135 A1 EP1169135 A1 EP 1169135A1 EP 00923301 A EP00923301 A EP 00923301A EP 00923301 A EP00923301 A EP 00923301A EP 1169135 A1 EP1169135 A1 EP 1169135A1
Authority
EP
European Patent Office
Prior art keywords
liquid
interior portion
armature
dispenser
valve stem
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
EP00923301A
Other languages
German (de)
English (en)
Other versions
EP1169135B1 (fr
Inventor
Laurence B. Saidman
James C. Smith
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.)
Nordson Corp
Original Assignee
Nordson Corp
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 Nordson Corp filed Critical Nordson Corp
Publication of EP1169135A1 publication Critical patent/EP1169135A1/fr
Application granted granted Critical
Publication of EP1169135B1 publication Critical patent/EP1169135B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet

Definitions

  • the present invention generally relates to apparatus for
  • dispensing liquid and, more specifically, to electrically operated apparatus
  • viscous liquids such as hot melt adhesives or epoxies.
  • dispensers include an electromagnetic coil that produces an electromagnetic
  • the electromagnetic field may be selectively controlled to open and
  • valve stem which is operatively associated with an armature or acts
  • the armature may
  • a generally cylindrical armature may contain channels
  • armature include reducing the diameter of the armature to provide a
  • gap or channels will promote greater flow, but will also reduce the
  • a catalyst are dispensed for bonding components to a circuit board.
  • the catalyst can break down and this can adversely affect the curing
  • the epoxy may cure while still in the
  • invention includes a dispenser body with a first interior portion and a second
  • the first interior portion communicates with an outlet for
  • An armature is disposed within the second interior
  • valve seat is disposed typically adjacent the outlet.
  • valve stem is mounted within the first interior portion and is connected for movement with the armature between a closed position in
  • valve stem engages the valve seat to prevent liquid flow from the
  • the coil is adapted to
  • passageway is in fluid communication with the first interior portion and is
  • a seal member is mounted between the first and second
  • valve stem may be an integral shaft
  • the armature is coaxially aligned with and
  • the armature is sized and shaped
  • the armature has
  • the present invention also contemplates a method for
  • viscous liquid is supplied to the first interior portion from the liquid inlet passageway.
  • the liquid is supplied to the first interior portion at
  • a pressure ranging from about 1 0 to about 1 5 psi. More generally, the
  • pressure may be less than about 1 00 psi and may be a minimum of about 3
  • the liquid is prevented from entering the second interior portion and
  • the coil is energized in order to
  • valve stem moves between the opened and closed positions.
  • the coil can
  • the high viscosity liquid preferably, the high viscosity liquid
  • liquids have a minimum viscosity of about 1 00 centipoise, however, the
  • Fig. 1 is an axial cross-sectional view of an electrically
  • Fig. 2 is a cross-sectional view of the liquid dispenser of Fig. 1
  • a dispenser body 1 2 a liquid
  • the dispenser 1 0 is
  • dispensers can benefit from the invention as well.
  • Such other liquids can benefit from the invention as well.
  • soldering fluxes include soldering fluxes, thermal greases, heat transfer compounds, and
  • the dispenser 1 0 is adapted to dispense liquids
  • liquids having viscosities above about 1 500 centipoise and for epoxies or
  • the dispenser body 1 2 has a first or lower interior portion 20
  • stem 26 is mounted within the lower interior portion 20 and has a shaft 28
  • a ball 30 is mounted to a lower end 28a of the shaft
  • valve seat 32 which is shown in Fig. 1 in sealing engagement with a valve seat 32
  • the nozzle body 1 4 also has a nozzle tip 36
  • the nozzle tip 36 can be readily
  • a liquid inlet passageway 46 is connected to the lower interior
  • portion 20 is adapted to connect to a source 47 of pressurized liquid
  • This source 47 may be a syringe supply device as shown in
  • a seal member 48 is positioned at the entrance
  • the source 47 of pressurized liquid Generally, the liquid coming from the source 47 is pressurized at between about 3 psi and about 100 psi. More
  • the liquid is pressurized to about 1 0-1 5 psi.
  • Arrows 50 indicate
  • Dynamic seal member 52 is held between a washer 54
  • passageway enters the lower interior portion 20 below dynamic seal
  • the dynamic seal member 52 prevents liquid entering through
  • an armature 60 is
  • the armature 60 operates in air and not liquid. Unlike other electrically
  • the armature 60 is
  • the armature 60 is sized such that in fills
  • Gap "t" preferably is less than
  • An electromagnetic coil 70 is disposed about the armature 60.
  • electromagnetic coil 70 will be generally toroidal in shape.
  • coil 70 generates an electromagnetic field
  • valve stem 26 which actuates valve stem 26 to an open position as will be described
  • a bore 80 extends into armature 60 to house a return spring
  • the return spring 82 biases the valve stem 26 and, more specifically,
  • 82 is more specifically a compression spring which is placed under
  • pole 84 so as to attract armature 60 and pole 84 together. Since pole 84 cannot move, armature 60 will move against the force of spring 82 until
  • the stroke length is the distance between armature 60 and
  • brazing 88 connects pole 84 to a tubular member 90.
  • Tubular member 90
  • a tool such as a screwdriver, may be used to turn
  • valve stem 26 varies the stroke length of valve stem 26.
  • donut 98 is disposed about tubular member 90 and rests against an upper
  • the dispenser 1 0 is constructed to
  • circuit board 1 Accordingly, one suitable method for dispensing the
  • the dispenser 1 0 is
  • member 52 prevents liquid, such as the heat cure epoxy, from leaking out
  • the electromagnetic coil 70 is energized to generate an
  • valve stem 32 is moved from its initial closed position to an opened
  • the electromagnetic coil 70 is de-energized such that
  • valve stem 26 will move from its opened position
  • the epoxy is supplied from the source 47 to the lower interior
  • portion 20 under relatively low pressure, such as between about 10-1 5 psi.
  • This pressure is substantially lower than that used in other electrically
  • droplet of epoxy is produced primarily by the return action of the ball 30
  • valve stem 26 is returned to the closed position by the return spring 82, the

Landscapes

  • Coating Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

L'invention concerne un distributeur de liquides à actionnement électrique (10) destiné à distribuer sélectivement un liquide visqueux tel qu'une résine époxyde (18) sur un substrat (19) tel qu'une carte de circuit intégré. Le distributeur (10) comprend un corps de distributeur (12) comportant une première partie intérieure (20) et une deuxième partie intérieure (22). La première partie intérieure (20) comprend un siège de soupape (32) et communique avec une sortie (34). Un induit (60) est disposé à l'intérieur de la deuxième partie intérieure (22), et une tige de soupape (26) est placée à l'intérieur de la première partie intérieure (20) de manière à se déplacer avec l'induit (60) entre les positions ouverte et fermée. Une bobine (70), disposée autour de l'induit (60), est conçue pour générer sélectivement un champ électromagnétique destiné à déplacer l'induit (60) et la tige de soupape entre les positions ouverte et fermée. Un canal interne pour liquides (46), en communication fluidique avec la première partie intérieure (20), est conçu pour se raccorder à une source de liquide (47) afin d'acheminer le liquide dans la première partie intérieure (20). Afin d'empêcher toute fuite de liquide depuis la première partie intérieure (20) vers la deuxième partie intérieure (22), un élément d'étanchéité (52) est monté entre les première et deuxième parties intérieures (20, 22) pour mettre en prise de façon étanche la tige de soupape (26).
EP00923301A 1999-04-19 2000-04-13 Procede de distribution de liquide visqueux Expired - Lifetime EP1169135B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US294275 1994-08-22
US29427599A 1999-04-19 1999-04-19
PCT/US2000/009876 WO2000062941A1 (fr) 1999-04-19 2000-04-13 Appareil de distribution a actionnement electrique et procede de distribution de liquide visqueux

Publications (2)

Publication Number Publication Date
EP1169135A1 true EP1169135A1 (fr) 2002-01-09
EP1169135B1 EP1169135B1 (fr) 2003-11-19

Family

ID=23132680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00923301A Expired - Lifetime EP1169135B1 (fr) 1999-04-19 2000-04-13 Procede de distribution de liquide visqueux

Country Status (5)

Country Link
EP (1) EP1169135B1 (fr)
JP (1) JP2002542020A (fr)
AU (1) AU4345200A (fr)
DE (1) DE60006659T2 (fr)
WO (1) WO2000062941A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20104603U1 (de) 2001-03-16 2001-05-17 Loctite Deutschland GmbH, 81925 München Ventil zur Ausgabe eines Fluid
US9314812B2 (en) 2010-01-14 2016-04-19 Nordson Corporation Jetting discrete volumes of high viscosity liquid
US9427768B2 (en) 2012-10-26 2016-08-30 Nordson Corporation Adhesive dispensing system and method with melt on demand at point of dispensing
US8939330B2 (en) * 2013-03-13 2015-01-27 Graco Minnesota Inc. Removable module service seat
EP3702047A1 (fr) * 2019-03-01 2020-09-02 Nordson Corporation Appareil de distribution de matériau liquide sur un substrat
JP7553316B2 (ja) 2020-10-14 2024-09-18 トヨタ自動車東日本株式会社 塗料噴射ノズル

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3412971A (en) * 1966-03-03 1968-11-26 Armstrong Cork Co Electrically-controlled valve apparatus and control circuit suitable for use therein

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0062941A1 *

Also Published As

Publication number Publication date
DE60006659D1 (de) 2003-12-24
WO2000062941A1 (fr) 2000-10-26
EP1169135B1 (fr) 2003-11-19
AU4345200A (en) 2000-11-02
DE60006659T2 (de) 2004-10-07
JP2002542020A (ja) 2002-12-10

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