EP0292779A1 - Méthode et appareil de nettoyage d'éléments à cavités - Google Patents

Méthode et appareil de nettoyage d'éléments à cavités Download PDF

Info

Publication number
EP0292779A1
EP0292779A1 EP88107507A EP88107507A EP0292779A1 EP 0292779 A1 EP0292779 A1 EP 0292779A1 EP 88107507 A EP88107507 A EP 88107507A EP 88107507 A EP88107507 A EP 88107507A EP 0292779 A1 EP0292779 A1 EP 0292779A1
Authority
EP
European Patent Office
Prior art keywords
component
flushing medium
sonotrode
holder
medium
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Withdrawn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
EP88107507A
Other languages
German (de)
English (en)
Inventor
Dieter Krumpe
Ludwig Schwarzmann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0292779A1 publication Critical patent/EP0292779A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16552—Cleaning of print head nozzles using cleaning fluids

Definitions

  • the invention relates to a method for cleaning components with cavities, in particular components of complex geometry with inner lumens of small cross-sections, the cleaning being carried out by the flow of a liquid flushing medium.
  • the invention also relates to associated devices for carrying out this method, with a pump device for the flushing medium and a holder for the component, with which the component can be attached to the inflow for the flushing medium.
  • Thermoplastic or thermosetting components are manufactured, among other things, by connecting individual parts, as a result of which predetermined cavities are created in these components, some of which can have complex geometry and, in particular, inner lumens with small cross sections.
  • predetermined cavities are created in these components, some of which can have complex geometry and, in particular, inner lumens with small cross sections.
  • such components are used for ink printers, the cavities especially for these applications having to be extremely clean in order to prevent the nozzles from becoming blocked.
  • Components of the type specified above are usually cleaned by flushing the component cavities with cleaning liquids as the flushing medium. But here is the Reini due to the flow behavior of the liquid used depends very much on the design of the cavities. In many cases, residual particles which fall into the cavities when the component is shaken during later intended use and can lead to blockages cannot be rinsed out using such known methods.
  • the invention is therefore based on the object of specifying an improved method and associated devices with which the cavities of components can be cleaned in such a way that no attached residual particles remain in the components.
  • components with inner lumens of small cross sections, for example nozzle heads of ink printers, it should be ensured that no blockages can occur during the later intended use of the component.
  • the object is achieved according to the invention in a method of the type mentioned at the outset that, due to ultrasound exposure to the flowing flushing medium and / or the component, oscillating cavitations occur in the flushed inner lumens of the component.
  • the rinsing medium can be a suspension with particles, the swirling of which intensifies the cleaning effect.
  • an ultrasound generating device with a sonotrode, which in its direction of oscillation has at least partially a central bore for the flow of the flushing medium.
  • the effective area of the sonotrode lies directly in the near field for the inner lumen of the component.
  • the invention surprisingly combines the advantages of purely rinsing with a flowing medium and the known ultrasonic cleaning, which previously could only be done as an alternative. A much more intensive cleaning effect is achieved than with conventional cleaning processes. Due to the intensive ultrasonic vibrations also within the component cavities and the intensive swirling of the cleaning liquid, comparatively firmly attached material particles in the cavities are also knocked off. These particles are carried along by the flowing rinsing medium and rinsed out.
  • 1 denotes a component made of thermoplastic, for example made of PSU (polysulfone): such a component 1 represents a nozzle head for use in ink printers and essentially consists of a plate 2 with several groups of nozzle openings 3, 3 'And 4, 4', with a back part 5 with two rows of juxtaposed cannulas 6, 6 'and 7, 7' is applied to the back of the plate 2.
  • PSU polysulfone
  • Narrow cavities and lumens of small cross-section run in component 1, which connect the individual cannulas 6, 7 to the nozzle openings 3, 4.
  • the cannulas 6, 6 ', 7 and 7' have an inside diameter of 100 ⁇ m, whereas the nozzle openings are considerably smaller.
  • parts 1 and 5 must first be manufactured as semi-finished products, into each of which the flow channel is molded.
  • the parts 2 and 5 can be connected by known welding methods.
  • component 1 is absolutely clean for later use.
  • the component was previously usually flushed with a cleaning liquid. Residual particles can usually not be removed by rinsing through.
  • a known rinsing device is combined with an ultrasonic cleaning system.
  • the conveying and pumping device for the rinsing medium and the actual ultrasound generation system are not shown in FIG. 2, but only the cleaning system which is effective.
  • An ultrasonic sonotrode 10 is provided with a central blind bore 11 from its end face 13, which normally defines the work surface, up to the level of the first vibration node.
  • the bore 11 widens to the end face 13 in an approximately spout-like manner and forms a funnel 12.
  • the sonotrode 10 is fixed in the vertical direction in a cleaning trough 20 by means of holding means not shown in detail.
  • the trough 20 is closed at the top by a cover part 25, only the sonotrode 10 projecting through in a predetermined position.
  • a fixing unit 21 is arranged on a base plate 23, which serves as a holder for the component 1.
  • the component 1 sits with its upper plate 2 on the end face 13 of the sonotrode 10 in such a way that all nozzle openings 3 and 4 lie in the nozzle-shaped funnel region 12 of the sonotrode 10.
  • Seals 22 and 24 are provided on the one hand between the base plate 23 and the cannulas 6 and 7 and on the other hand between the end face 13 of the sonotrode 10 and plate 2 of the component 1.
  • the component 1 is received on the flushing outlet side by the fixing device 21 with the sealing plate 22.
  • the end face of the sonotrode 10 is coupled to the rinsing inlet side of the component 1 via the seal 24.
  • the sonotrode 10 is set in vibration, for example at 20 or 40 kHz, via an ultrasound generator (not shown), so that ultrasound vibrations are transmitted on the one hand to the flowing liquid and on the other hand to the component 1. Due to the intensive vibrations in the cavities through which liquid flows, residual material particles in component 1 are knocked off, entrained by the cavitations in the cleaning liquid and rinsed out of component 1.
  • the entire device comprising cleaning trough 20, cover 25 and sonotrode 10 can be changed in spacing relative to a base plate 50 by means of spacers 27 and 28.
  • a stopcock 30 is inserted in the outlet 29 of the cleaning trough 20 and can be actuated via a rotary handle 31.
  • An interchangeable filter 35 for collecting particles is arranged below the stopcock 30. The filter 35 is mounted in a slide 37 between the limiting strips 34, so that it is easily replaceable, even when the device is in operation.
  • a sealing ring 32 and a safety ring 33 are provided for sealing and actuation by the rotary handle 31.
  • the slide 37 and the limiting strips 34 are arranged on a bearing block 36, in which an eccentric 40 engages with a handle 41.
  • the entire arrangement can be sealed via the eccentric 40.
  • the collecting device enables quality control when flushing the components. If a suspension with defined particles is selected as the rinsing medium in a first process step, which, because of the swirling of the particles, has an additional cleaning effect, the quantitative rinsing out of these particles after exchange with a rinsing liquid can thus first be ensured. A return can also be provided for the flushing medium to form a closed liquid circuit.
  • FIG. 3 shows a component 100 which is also used in ink printers.
  • This component 100 is completed in the production of injection-molded semi-finished parts 102 and 105 in such a way that defined cavities 104, which run from connection points 106 to outlet cannulas 107, are each covered by a cover 105.
  • the surface of the finished component 100 with the lids 105 used is flat.
  • a sonotrode 110 is placed with its end face 113 with the interposition of a sealing plate 115 on the flat surface of the component 100.
  • the lumens 104 of the component 100 are located directly in the near field area of the effective surface 113 of the sonotrode 110.
  • the component 100 is mounted in a suitable receiving unit 120 with the interposition of silicone sealing plates 121 and 122.
  • the receiving unit 120 has a liquid inlet 123 and a liquid outlet 124, which can be coupled to a closed liquid system via line connections 125 and 126.
  • the receiving unit 120 is applied to a base plate 150.
  • the liquid-filled inner lumen 104 of the component 100 can be excited to vibrate by ultrasound excitation, which in turn leads to an intensive cleaning effect due to the swirling of the flushing medium flowing through.
  • devices can also be created in which there are several sonotrodes, the effective surfaces of which are adapted to the geometry of the component to be cleaned. Even metallic precision parts that have been machined as semifinished products by exciting shaping and then put together can be cleaned using the described method and an appropriately designed device.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
EP88107507A 1987-05-25 1988-05-10 Méthode et appareil de nettoyage d'éléments à cavités Withdrawn EP0292779A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3717554 1987-05-25
DE3717554 1987-05-25

Publications (1)

Publication Number Publication Date
EP0292779A1 true EP0292779A1 (fr) 1988-11-30

Family

ID=6328346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107507A Withdrawn EP0292779A1 (fr) 1987-05-25 1988-05-10 Méthode et appareil de nettoyage d'éléments à cavités

Country Status (1)

Country Link
EP (1) EP0292779A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995602A1 (fr) * 1998-10-19 2000-04-26 Eastman Kodak Company Imprimante à jet d'encre autonettoyante et sa méthode d'assemblage
EP1016531A1 (fr) * 1998-12-29 2000-07-05 Eastman Kodak Company Imprimante à jet d'encre autonettoyante avec septum oscillant et méthode d'assemblage de l'imprimante
EP1016530A1 (fr) * 1998-12-29 2000-07-05 Eastman Kodak Company Imprimante à jet d'encre avec cloison oscillante et procédé d'assemblage de l'imprimante
EP1088664A1 (fr) * 1999-09-28 2001-04-04 Eastman Kodak Company Système d'imprimante à jet d'encre auto-nettoyant à écoulement de fluide réversible et méthode d'assemblage du système d'imprimante
EP1101616A1 (fr) * 1999-11-22 2001-05-23 Agilent Technologies Inc. Nettoyage de têtes d'impression
US6350007B1 (en) 1998-10-19 2002-02-26 Eastman Kodak Company Self-cleaning ink jet printer using ultrasonics and method of assembling same
WO2007059632A1 (fr) 2005-11-24 2007-05-31 Kks Ultraschall Ag Systeme de nettoyage de corps creux par ultrasons
EP3210779A1 (fr) * 2016-02-25 2017-08-30 OCE-Technologies B.V. Dispositif de jet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563688A (en) * 1983-05-16 1986-01-07 Eastman Kodak Company Fluid jet printer and method of ultrasonic cleaning
US4600928A (en) * 1985-04-12 1986-07-15 Eastman Kodak Company Ink jet printing apparatus having ultrasonic print head cleaning system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563688A (en) * 1983-05-16 1986-01-07 Eastman Kodak Company Fluid jet printer and method of ultrasonic cleaning
US4600928A (en) * 1985-04-12 1986-07-15 Eastman Kodak Company Ink jet printing apparatus having ultrasonic print head cleaning system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 187 (M-98)[859], 26. November 1981, Seite 102 M 98; & JP-A-56 106 868 (SUWA SEIKOSHA K.K.) 25-08-1981 *
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 197 (M-239)[1342], 27. August 1983, Seite 114 M 239; & JP-A-58 96 563 (MATSUSHITA DENKI SANGYO K.K.) 08-06-1983 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995602A1 (fr) * 1998-10-19 2000-04-26 Eastman Kodak Company Imprimante à jet d'encre autonettoyante et sa méthode d'assemblage
US6350007B1 (en) 1998-10-19 2002-02-26 Eastman Kodak Company Self-cleaning ink jet printer using ultrasonics and method of assembling same
EP1016531A1 (fr) * 1998-12-29 2000-07-05 Eastman Kodak Company Imprimante à jet d'encre autonettoyante avec septum oscillant et méthode d'assemblage de l'imprimante
EP1016530A1 (fr) * 1998-12-29 2000-07-05 Eastman Kodak Company Imprimante à jet d'encre avec cloison oscillante et procédé d'assemblage de l'imprimante
US6286929B1 (en) 1998-12-29 2001-09-11 Eastman Kodak Company Self-cleaning ink jet printer with oscillating septum and ultrasonics and method of assembling the printer
EP1088664A1 (fr) * 1999-09-28 2001-04-04 Eastman Kodak Company Système d'imprimante à jet d'encre auto-nettoyant à écoulement de fluide réversible et méthode d'assemblage du système d'imprimante
EP1101616A1 (fr) * 1999-11-22 2001-05-23 Agilent Technologies Inc. Nettoyage de têtes d'impression
US6446642B1 (en) 1999-11-22 2002-09-10 Agilent Technologies, Inc. Method and apparatus to clean an inkjet reagent deposition device
US6796634B2 (en) 1999-11-22 2004-09-28 Agilent Technologies, Inc. Method and apparatus to clean an inkjet reagent deposition device
US7008037B2 (en) 1999-11-22 2006-03-07 Agilent Technologies, Inc. Method and apparatus to clean an inkjet reagent deposition device
WO2007059632A1 (fr) 2005-11-24 2007-05-31 Kks Ultraschall Ag Systeme de nettoyage de corps creux par ultrasons
EP3210779A1 (fr) * 2016-02-25 2017-08-30 OCE-Technologies B.V. Dispositif de jet

Similar Documents

Publication Publication Date Title
DE3247540C2 (fr)
DE3700981C2 (fr)
DE60119003T2 (de) Aufzeichnungskopfeinheit
DE3347174C2 (fr)
DE69728344T2 (de) Verfahren zur Herstellung von Flüssigkeitsstrahlaufzeichnungsköpfen
EP0452539B1 (fr) Dispositif de filtrage pour extrudeuse et presse d'injection
WO1992011923A1 (fr) Dispositif pour le nettoyage du liquide d'usinage pour une machine d'usinage par electro-erosion ou electrochimique
EP0292779A1 (fr) Méthode et appareil de nettoyage d'éléments à cavités
DE2839387A1 (de) Duese zur erzeugung hydrodynamischer schwingungen in fluessigkeiten
EP0382202B1 (fr) Procédé et dispositif pour enlever le composant à séparer d'un fluide
DE4406818C1 (de) Verfahren und Vorrichtung zum Verschweißen von zumindest Metallteilen
EP0431431B1 (fr) Dispositif de racle
DE102020105736A1 (de) Inkjet-Druckkopfreinigung mit Ultraschall
EP2338653B1 (fr) dispositif de découpage au jet de fluid
DE102007012979B4 (de) Verfahren und Vorrichtung zum Spülen von maschinell gefertigten Bauteilen
DE1532575C3 (de) Vorrichtung zum Behandeln von Flaschen mit Ultraschall in einer Flaschenreinigungsmaschine
DD252946A3 (de) Einrichtung zum ultraschallreinigen von rotationssymmetrischen serienteilen
EP1258276B1 (fr) Procédé et dispositif pour la filtration de fluides produits par des machines d' usinage
EP0992294A2 (fr) Dispositif et procédé pour laver des barres
DE69727894T2 (de) Verfahren zum Herstellen eines Tintenstrahlaufzeichnungskopfes und Tintenstrahlaufzeichnungskopf
DE10041370A1 (de) Reinigungsvorrichtung und Verfahren zum Reinigen von Werkstücken
DE102019213342A1 (de) Verfahren und Vorrichtung zum elektrochemischen Bearbeiten von Bauteilen
DE3342619A1 (de) Verfahren und maschine zum ultraschallschweissen von thermoplastischen kunststoffteilen
DE4010963A1 (de) Vorrichtung zur beseitigung von zunder und/oder schlacke an den oberflaechen eines metallgiessstranges
DE2048342A1 (de) Verfahren und Vorrichtung zum Entfernen eines Filterkuchens

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): AT BE CH DE FR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890410

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19901130