EP0748657A2 - Tête d'application pour la distribution et le dosage d'un fluide - Google Patents

Tête d'application pour la distribution et le dosage d'un fluide Download PDF

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Publication number
EP0748657A2
EP0748657A2 EP96108311A EP96108311A EP0748657A2 EP 0748657 A2 EP0748657 A2 EP 0748657A2 EP 96108311 A EP96108311 A EP 96108311A EP 96108311 A EP96108311 A EP 96108311A EP 0748657 A2 EP0748657 A2 EP 0748657A2
Authority
EP
European Patent Office
Prior art keywords
valve
application
rocker
application head
head according
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
EP96108311A
Other languages
German (de)
English (en)
Other versions
EP0748657B1 (fr
EP0748657A3 (fr
Inventor
Heiko Würth
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.)
ITW Dynatec GmbH
Original Assignee
ITW Dynatec GmbH
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 ITW Dynatec GmbH filed Critical ITW Dynatec GmbH
Publication of EP0748657A2 publication Critical patent/EP0748657A2/fr
Publication of EP0748657A3 publication Critical patent/EP0748657A3/fr
Application granted granted Critical
Publication of EP0748657B1 publication Critical patent/EP0748657B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87708—With common valve operator
    • Y10T137/87748—Pivoted or rotary motion converted to reciprocating valve head motion
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87708—With common valve operator
    • Y10T137/87772—With electrical actuation

Definitions

  • the invention relates to an application head for the metered delivery of flowing media, in particular hot melt adhesive, cold glue, lubricants, paints or the like.
  • a housing in which a pivotable rocker acting on at least one valve member is provided, which is arranged over two rocker joints on both sides Piezo elements is driven.
  • Such an application head is already known from DE-GM 94 05 600.5 by the applicant. It is used, for example, to apply hot glue to a substrate made of cardboard, paper, textile, fleece or the like.
  • the web-shaped substrate is guided past the fixed application head.
  • the valve described there has the advantage that the piezoelectric valve drive, when automatic temperature compensation is present, consists of only two piezo elements, the slight increase in length of each individual piezo element being converted into a relatively large valve stroke by the transmission of the movement emanating from the two piezo elements by means of a rocker construction. Furthermore, this valve drive provides a large valve force of approx. 3000 N, the time for an opening and closing cycle only being 0.8 to 0.25 msec. is.
  • the object of the invention is now to create a new application head which has a greater throughput and order capacity as well as an even application of glue.
  • the solution according to the invention has the fundamental advantage that the theoretical application performance can be more than doubled by designing the valve drive as a double rocker, while at the same time all the advantages of the aforementioned prior art also apply to the application head according to the invention.
  • the second application valve inevitably opens at the moment when an application valve closes, pressure fluctuations in the adhesive circulation system are largely avoided in a particularly advantageous manner.
  • Avoiding pressure fluctuations within the closed hot-melt adhesive system according to the invention results in a uniform circulation of the hot-melt adhesive within the circulation channel. This also prevents the hot glue from burning in the heated part of the application head and from caking, sticking and the like occurring within the circulation channel.
  • the additional valve member is not used to control a further application valve, but rather acts on a valve which is arranged within a closed circulation system for the liquid medium provided with a pump.
  • This preferred embodiment of the invention has particular advantages if a larger number of individual substrates, for example cardboard blanks, are to be coated within a unit of time. It is sometimes necessary that the gaps between the individual cardboard blanks or between areas that are to be coated with adhesive dots have to be bridged.
  • the piezo elements driving the rocker construction are connected to an online power supply, which essentially consists of an accumulator and associated electronics, which determines the respective position of the order valve in the event of a power failure and corrects the closed state.
  • an online power supply which essentially consists of an accumulator and associated electronics, which determines the respective position of the order valve in the event of a power failure and corrects the closed state.
  • an application head for the metered delivery of hot glue is designated by the reference number 10.
  • the application head has a housing 11 with housing parts 12 and 13.
  • a thermal separating layer 14 is present between the housing parts 12 and 13.
  • a valve drive 15 designed as a double rocker, electronic components (not shown) and an electrical supply and control line 16 are arranged in the housing part 12.
  • the double rocker 15 has two rocker arms 17, at the free ends of which a rod-shaped valve member 18 is arranged, which projects through the thermal separating layer 14 into the housing part 13 into a valve head 19.
  • a heating device 20 and the common feed channel 21 for hot glue are also arranged in the housing part 13.
  • the feed channel 21 is connected to the valve heads 19 via hot melt adhesive channels 22.
  • a temperature sensor T can be seen below the hot-melt adhesive channels 12.
  • valve head 19 While one valve head 19 contains an application valve 23, the other valve head 19 serves as a closure valve 24 for a hot glue return line 25, which establishes a connection to a hot glue pump, not shown.
  • This hot glue pump is in turn connected to the feed channel 21, so that a closed hot glue system is present.
  • valve members 18 are each attached to the free end of the rocker arms 17 via a flexible cardan B and a screw connection 26, the double rocker 15 itself is connected to a base part 28 via a joint 27.
  • Two piezo elements 30 are also connected to the double rocker 15 via joints 29 on both sides above the joint 27.
  • the articulated connection of the double rocker 15 to the base part 28 as well as to the piezo elements 30 is a cohesive connection.
  • connecting parts 32 which in turn are bonded to the piezo elements 30, are each connected to the double rocker 15 via a flexible, narrow material bridge (joint 29), a narrow gap 31 also being present on both sides of the material bridge.
  • the piezo elements 30 constructed and bonded from approx. 200 0.1 mm thick ceramic disks rest against the end facing away from the double rocker 15 against a flexible cover plate 33 fastened with screws, not shown.
  • the piezo elements 30 are articulated on both sides of a vertical axis x running through the joint 27 at a distance d from the double rocker 15. This results in automatic temperature compensation in connection with the flexible mounting of the piezo elements 30 by the cover plate 33.
  • the double rocker is acted upon 15 times clockwise or counterclockwise by a torque, through which a rocker arm 17 and the valve member 18 connected to it upward and a rocker arm 17 downward is moved.
  • the application valve 23 or the closure valve 24 can be opened alternately in the exemplary embodiment, the opposite valve then being closed in opposite directions.
  • the resulting prevention of pressure peaks results in a relatively continuous outflow of hot glue during the opening cycle of the application valve 23, which ensures a clean application of adhesive to the substrate.
  • the two piezo elements 30 are controlled and regulated by special valve electronics 34, which are essentially arranged in the housing part 12 shown in FIG. 1.
  • the valve electronics 34 shown in a block diagram in FIG. 2, on the one hand, enable the two piezo elements 30 to be subjected to alternating voltage and, on the other hand, to operate the application head 10 in a particularly energy-saving manner and thus also with little heat loss.
  • the valve electronics 34 has a so-called charge pump arrangement 35, which is basically shown in FIG. 2.
  • the charge pump arrangement 35 has an intermediate store 36 and a plurality of power field effect transistors 37, the buffer 36 and the power field effect transistors 37 each being connected to both piezo elements 30.
  • the intermediate store 36 contains a coil 38 and a capacitor 39.
  • this reloading principle means that the energy (charge) stored in one piezo element 30 is transformed "in portions" into the other piezo element 30. Basically, this takes place within the charge pump arrangement 35 in that, on the one hand, the charge of a piezo element 30 is temporarily stored in the intermediate memory 36 and, on the other hand, the power field effect transistors 37 gradually transform the stored energy to the other piezo element 30 by switching various networks.
  • the time sequence of the recharging processes and the respective switching state of the power field effect transistors 37 is determined by a programmable controller 40.
  • a programmable controller 41 also acts on the programmable controller 40, which continuously queries the target / actual value comparison of the voltage state of the individual piezo elements 30.
  • This reloading principle makes it possible for the energy present in a piezo element 30 to be fed back into the primary circuit and then back to Excitation of the other piezo element 30 can be used.
  • valve electronics 34 has a clock generator 44 and a status display 45, which, however, are arranged outside the application head 10. While the clock generator 44 - as the name suggests - specifies the clock for the electronic processes taking place, the status display 45 is a visual display for the operator.
  • the valve electronics 34 also have a temperature controller 46, which regulates the valve temperature to the temperature specified on a setpoint potentiometer 47.
  • a temperature controller 46 which regulates the valve temperature to the temperature specified on a setpoint potentiometer 47.
  • a temperature sensor (not shown) arranged above the heating cartridge 20 constantly measures the valve temperature. The valve is only released by the programmable controller 40 if this temperature coincides with the temperature at the setpoint potentiometer 47 and thus the working temperature is present.
  • valve electronics 34 is ultimately provided with an online power supply 48, which essentially consists of an accumulator and electronics, which determines the respective state of the order valve and ensures complete closure.

Landscapes

  • Coating Apparatus (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP96108311A 1995-06-13 1996-05-24 Tête d'application pour la distribution et le dosage d'un fluide Expired - Lifetime EP0748657B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19521478A DE19521478C1 (de) 1995-06-13 1995-06-13 Auftragskopf zur dosierten Abgabe von strömenden Medien
DE19521478 1995-06-13

Publications (3)

Publication Number Publication Date
EP0748657A2 true EP0748657A2 (fr) 1996-12-18
EP0748657A3 EP0748657A3 (fr) 1998-01-07
EP0748657B1 EP0748657B1 (fr) 1999-08-11

Family

ID=7764265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96108311A Expired - Lifetime EP0748657B1 (fr) 1995-06-13 1996-05-24 Tête d'application pour la distribution et le dosage d'un fluide

Country Status (3)

Country Link
US (1) US5730359A (fr)
EP (1) EP0748657B1 (fr)
DE (2) DE19521478C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106423747A (zh) * 2016-08-30 2017-02-22 杭州特工包装机械有限公司 防锈涂膜装置
CN107303753A (zh) * 2016-04-22 2017-10-31 北京派和智能装备技术有限公司 压电喷射打印头和具有该打印头的打印装置
CN112303290A (zh) * 2019-07-31 2021-02-02 惠州市唐群座椅科技股份有限公司 集成式开关装置

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29713744U1 (de) * 1997-08-01 1998-12-03 Planatol Klebetechnik Gmbh Leim- und/oder Befeuchtungseinrichtung
US6315049B1 (en) * 1998-10-07 2001-11-13 Baker Hughes Incorporated Multiple line hydraulic system flush valve and method of use
US6157115A (en) * 1998-10-13 2000-12-05 Nordson Corporation Mechanical amplifier
DE19848358A1 (de) * 1998-10-21 2000-04-27 Edf Polymer Applikation Maschi Ventileinrichtung
FR2794210B1 (fr) * 1999-05-28 2001-08-31 Crouzet Automatismes Dispositif de detection de la fermeture simultanee de deux organes mobiles et son application a un systeme coupe-feu a clapet
DE19946839B4 (de) * 1999-09-30 2006-07-27 Robert Bosch Gmbh Verstelleinrichtung zum Ansteuern einer Regel- und/oder Absperrvorrichtung
US6321948B1 (en) 2000-04-04 2001-11-27 Rieke Corporation Tap and valve assembly
JP5048906B2 (ja) * 2000-06-19 2012-10-17 ロス オペレーティング バルブ カンパニー 本質的に安全なマイクロプロセッサー制御圧力調整器
US6799702B1 (en) 2000-11-22 2004-10-05 Gopro, Inc. Device for dispensing viscous liquids
US7731647B2 (en) * 2002-09-13 2010-06-08 Windmoeller & Hoelscher Kg Device for placing a paper bag bottom
US7694855B2 (en) 2004-04-23 2010-04-13 Nordson Corporation Dispenser having a pivoting actuator assembly
ITMI20041472A1 (it) * 2004-07-21 2004-10-21 Fabrizio Nobili Doccetta per docce in genere ed in particolare per docce manuali per lavelli e simili
ITMI20051252A1 (it) * 2005-07-01 2007-01-02 Fabrizio Nobili Gruppo per l'erogazione differenziabile di acqua trattata e di acqua di rete
ITMI20060357A1 (it) * 2006-02-28 2007-09-01 Fabrizio Nobili Doccetta per lavello con variazione del getto di erogazione e regolazione della portata
EP1884693A1 (fr) * 2006-08-03 2008-02-06 Fabrizio Nobili Robinet
US20090107398A1 (en) * 2007-10-31 2009-04-30 Nordson Corporation Fluid dispensers and methods for dispensing viscous fluids with improved edge definition
DE102012109123A1 (de) 2012-09-27 2014-03-27 Vermes Microdispensing GmbH Dosiersystem, Dosierverfahren und Herstellungsverfahren
CN105312190B (zh) * 2015-11-26 2018-05-25 河北鹏冠科技股份有限公司 一种流体点胶喷射阀组件
CN106269390B (zh) * 2016-08-30 2018-10-16 杭州特工包装机械有限公司 加工异形钢用的刷油系统
JP7198771B2 (ja) * 2017-04-21 2023-01-04 ノードソン コーポレーション 吐出システム
CN108160409A (zh) * 2017-12-27 2018-06-15 苏州华控注胶技术有限公司 一种用于多种胶水混合的流道结构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9405600U1 (de) * 1994-04-02 1994-06-16 Itw Dynatec Klebetechnik Holdi Auftragskopf zur dosierten Abgabe von strömenden Medien

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JPS586101B2 (ja) * 1978-01-17 1983-02-03 アイシン精機株式会社 電磁弁装置
DE3342951C2 (de) * 1983-11-26 1986-12-18 Daimler-Benz Ag, 7000 Stuttgart Betätigungseinrichtung für zwei abhängig voneinander betätigbare Ventile
DE3739048C2 (de) * 1987-11-17 2001-08-09 Buerkert Gmbh Mehrwegeventil
DE4220177A1 (de) * 1992-06-19 1993-12-23 Marco Systemanalyse Entw Vorrichtung zur Betätigung eines Ventilelementes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9405600U1 (de) * 1994-04-02 1994-06-16 Itw Dynatec Klebetechnik Holdi Auftragskopf zur dosierten Abgabe von strömenden Medien

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107303753A (zh) * 2016-04-22 2017-10-31 北京派和智能装备技术有限公司 压电喷射打印头和具有该打印头的打印装置
CN106423747A (zh) * 2016-08-30 2017-02-22 杭州特工包装机械有限公司 防锈涂膜装置
CN112303290A (zh) * 2019-07-31 2021-02-02 惠州市唐群座椅科技股份有限公司 集成式开关装置
CN112303290B (zh) * 2019-07-31 2021-11-09 惠州市唐群座椅科技股份有限公司 集成式开关装置

Also Published As

Publication number Publication date
US5730359A (en) 1998-03-24
EP0748657B1 (fr) 1999-08-11
DE59602698D1 (de) 1999-09-16
DE19521478C1 (de) 1996-09-12
EP0748657A3 (fr) 1998-01-07

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