EP1885510A1 - Procede et dispositif pour appliquer des boudins de masse pateuse - Google Patents

Procede et dispositif pour appliquer des boudins de masse pateuse

Info

Publication number
EP1885510A1
EP1885510A1 EP06742870A EP06742870A EP1885510A1 EP 1885510 A1 EP1885510 A1 EP 1885510A1 EP 06742870 A EP06742870 A EP 06742870A EP 06742870 A EP06742870 A EP 06742870A EP 1885510 A1 EP1885510 A1 EP 1885510A1
Authority
EP
European Patent Office
Prior art keywords
mixing chamber
component
bead
adhesive mixture
mixing
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Withdrawn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
EP06742870A
Other languages
German (de)
English (en)
Inventor
Josef Schucker
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.)
Atlas Copco IAS GmbH
Original Assignee
SCA Schucker 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 SCA Schucker GmbH filed Critical SCA Schucker GmbH
Publication of EP1885510A1 publication Critical patent/EP1885510A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
    • G05D11/132—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components by controlling the flow of the individual components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/84—Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/81—Forming mixtures with changing ratios or gradients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
    • B01F35/831—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows
    • B01F35/8311—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows with means for controlling the motor driving the pumps or the other dispensing mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/10—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to temperature or viscosity of liquid or other fluent material discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/34—Applying different liquids or other fluent materials simultaneously

Definitions

  • the invention relates to a method and a device for applying beads of a two-component curable adhesive or sealant having pasty mass on workpieces according to the preamble of claim 1 and according to the preamble of claim 18th
  • two-component adhesives are increasingly used for joining workpieces, which are applied in the form of a pasty mass as a bead on the workpieces.
  • a gun is used, which has a mixing chamber into which the two components of the
  • the pasty mass which consists of the components mixed with the adhesive and, if appropriate, of further admixed additives, is applied to the workpieces via an application nozzle, optionally with turbulence by means of a pressurized gas.
  • the 0 components are supplied to the application head under pressure, so that when the application nozzle is opened, the pressurized pasty mass is pressed out of the mixing chamber.
  • the adhesive mixture can no longer be processed and there is a risk that it will no longer be removed from the mixer can, so that it becomes unusable.
  • the adhesive mixture can therefore be left in the mixing chamber only during a so-called open time.
  • the end of the open time is defined by the so-called pot life. If between the application of two beads of pasty mass passes a time that is greater than the pot life, therefore, the mixing chamber must be rinsed out. This is done by the present in the mixing chamber pasty mass is emptied with the already partially reacted adhesive mixture by tracking the two components from reservoirs into the mixing chamber. In particular, for longer interruptions of the bead application thereby larger amounts of the pasty mass are lost.
  • the invention is based on the idea that by varying the mixing ratio of the first and the second component, the reaction rate during curing and thus also the pot life can be varied. If at the end of the order of a bead, the two components are supplied in a mixing ratio in the mixing chamber, which ensures a slow curing and thus a long pot life, the mixing chamber is filled after the end of the application process with a slow-curing adhesive mixture and it is possible the up - To interrupt process for a long time without the mixing chamber must be rinsed out.
  • the slow-setting adhesive mixture can be removed from the mixing chamber when the next bead is applied and form the beginning of the caterpillar. The curing time of this bead start may be too long to ensure a reliable connection between workpieces.
  • the first component of the adhesive is suitably a base component and the second component is a hardener component.
  • the mixing ratio of base component and hardener component is advantageously varied over time so that each bead over a majority of their length a faster curing first adhesive mixture and over the rest of their length having slower curing second adhesive mixture.
  • the majority of the caterpillar is then cured after a short time and ensures a stable connection, which is no longer significant that a small part of the length of the bead hardens more slowly.
  • the mixing chamber is supplied with a temporally constant total amount of base component and hardener component.
  • the total amount can either be based on mass or volume, so that either a constant total mass or a constant total volume of the mixing chamber is supplied.
  • the bead is either always uniformly thick or formed with a constant mass per unit length.
  • the total amount is expediently specified by a control robot.
  • the base component and the hardener component are supplied in a quantity ratio corresponding to the second adhesive mixture. The supply of this quantitative ratio is expediently carried out at such a time that the mixing chamber is completely filled with the second adhesive mixture before or at the end of the application of the first bead.
  • the second adhesive mixture located after application of the first bead in the mixing chamber is removed from the mixing chamber before application of a second bead following the first bead.
  • the second bead following the first bead is formed over part of its length from the second adhesive mixture located after application of the first bead in the mixing chamber.
  • it is expedient to remove the second adhesive mixture from the mixing chamber by supplying the base component and the hardener component in a quantitative ratio corresponding to the first adhesive mixture. This ensures that only the beginning of the second bead has a slow-curing adhesive mixture.
  • the paste-like mass to be applied must be pre-pressurized at the beginning of the application process. This is dependent on its viscosity.
  • the admission pressure is regulated by the control unit as a function of the mixing ratio of the two components contained in the mixing chamber.
  • the pasty mass emerging from the application nozzle can be swirled with pressurized gas.
  • the gas pressure and / or the volume flow of the compressed gas is appropriate regulated by the control unit as a function of the mixing ratio of the two components contained in the mixing chamber.
  • the turbulence of the pasty mass is used to set a given bead width.
  • the application nozzle can be rotated by means of an electric motor about a bezüg- the workpieces linearly moving, pointing to the workpieces axis, wherein the rotational movement is controlled depending on the mixing ratio of the two components contained in the mixing chamber.
  • FIG. 1 shows a block diagram of a device for applying a two-component adhesive
  • Fig. 2 is a schematic representation of a workpiece with applied adhesive bead.
  • An apparatus 10 for applying a bead 12 (FIG. 2) of a pasty mass 14 to a workpiece 16 according to FIG. 1 has an application head 18 which contains a mixing chamber. In the mixing chamber, the components of the pasty mass 14 are mixed together and then applied pressurized via an application nozzle 20 to the workpiece 16.
  • the pasty mass 14 consists of a two-component adhesive mixture which is formed from a base component and a hardener component by mixing the two components in the mixing chamber of the application head 18.
  • the base and hardener components are conveyed from separate storage tanks 22B.22H by means of feed pumps 24B.24H.
  • dosing 26B.26H they are supplied in a predetermined amount ratio of the mixing chamber and mixed there to the adhesive mixture 14.
  • B stands for base component
  • H for hardener component.
  • the device 10 includes a control robot 28, which determines the application amount of adhesive mixture per unit time measured in volumes per second and the feed rate of the applicator head 18 relative to the workpiece 16. These values are transmitted to a control unit 30, which controls the metering devices 26B.26H. By controlling the metering devices 26B, 26H by the control unit 30, the quantitative ratio of base component and hardener component, which is supplied to the mixing chamber, regulated.
  • the quantity ratio of the basic and hardener component supplied to the mixing chamber is varied in time by the control unit 30, as outlined in FIG. 2.
  • the application of the bead 12 to the body part 16 begins, wherein the application head 18 is moved in the application direction R at a predetermined speed.
  • a slow-curing adhesive mixture with a small proportion of hardener compo- nente which is applied to the body part 16 to form a hatched in Fig. 2 illustrated beginning portion 32 of the bead 12.
  • base and hardener components are introduced under pressure into the mixing chamber in an altered quantity ratio controlled by the metering devices 26B.26H with a larger proportion of hardener component.
  • the faster-curing adhesive mixture with an increased proportion of the hardener component is applied to the body part.
  • the mixing ratio of base component and hardener component is changed again by the control unit 30, so that the two components are supplied to the mixing chamber in a proportion corresponding to the mixing ratio of the slow-curing adhesive mixture.
  • the bead 12 at one end section 34 again consists of the slow-setting adhesive mixture (shown hatched in FIG. 2).
  • the slow-curing adhesive mixture is thus again contained in the mixing chamber.
  • the total amount of introduced per unit time in the mixing chamber components is always kept constant.
  • the device 10 furthermore has a sensor device which has an air humidity sensor 36, an ambient temperature sensor 38 and a further temperature sensor 40.
  • the ambient temperature sensor 36 measures the ambient temperature to which the bead 12 applied to the body panel 16 is exposed.
  • the humidity sensor 38 measures the humidity. Both the ambient temperature and the humidity affect the curing time of the adhesive bead 12. The dependence of the curing time on the proportion of the hardener component in the adhesive bead 12 and on the ambient temperature and the humidity is known and stored in the control unit 30.
  • the control unit 30 controls the mixing ratio of the base component and the hardener component in the bulk the caterpillar 12 forming fast-curing adhesive mixture so that this part of the bead 12 hardens in a desired, predetermined time.
  • the control unit 30 In the mixing chamber is another temperature sensor 40, which measures the temperature prevailing there. The determined temperature value is forwarded to the control unit 30, which adjusts the mixing ratio of base and hardener components of the slow-setting adhesive mixture as a function of the temperature in the mixing chamber so that the adhesive mixture has a desired, predetermined pot life.
  • the adhesive mixture 14 emerging from the application nozzle 20 is swirled by means of a compressed gas stored in a compressed gas container 42, in the present case with compressed air, for adjusting the width of the bead 12.
  • a compressed gas container 42 in the present case with compressed air
  • the volume flow of compressed air required for setting a predetermined bead width depends on the viscosity of the adhesive mixture
  • the control unit 30 also varies the air pressure by controlling a valve 44 to obtain a bead of constant width the control unit 30 regulates a pre-pressure generated by the metering devices 26B, 26H depending on the mixing ratio of base component and hardener component before the start of a bead application.
  • the invention relates to a method for applying beads 12 of a at least two-component curable adhesive or sealant having pasty mass 14 on workpieces 16, wherein a first component B and a second component H fed to a mixing chamber and in this be mixed, and wherein the pasty mass 14 to form the beads 12 under pressure aufschlagung an application nozzle 20 is applied to the workpieces 16.
  • the mixing ratio of the first and second components B 1 H during the application of the beads 12 by means of a control unit 30 by time-dependent control of the quantity supply of the two components B 1 H is varied in the mixing chamber.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un procédé pour appliquer, sur des pièces à usiner (16), des boudins (12) d'une masse pâteuse (14) qui contient une substance adhésive ou une substance d'étanchéité durcissable à au moins deux composants. Selon ce procédé, un premier composant (B) et un deuxième composant (H) sont introduits dans une chambre de mélange et sont mélangés dans celle-ci, la masse pâteuse (14) étant appliquée sur les pièces à usiner (16) par l'intermédiaire d'un ajutage d'application (20), par application d'une pression, pour former les boudins (12). La présente invention est caractérisée en ce que le rapport de mélange entre le premier (B) et le deuxième composant (H) est modifié pendant l'application des boudins (12), au moyen d'une unité de régulation (30), par régulation de la quantité de composants (B, H) introduite dans la chambre de mélange, en fonction du temps.
EP06742870A 2005-06-03 2006-05-11 Procede et dispositif pour appliquer des boudins de masse pateuse Withdrawn EP1885510A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005026050A DE102005026050A1 (de) 2005-06-03 2005-06-03 Verfahren zum Aufbringen von Raupen einer pastösen Masse
PCT/EP2006/004401 WO2006128560A1 (fr) 2005-06-03 2006-05-11 Procede et dispositif pour appliquer des boudins de masse pateuse

Publications (1)

Publication Number Publication Date
EP1885510A1 true EP1885510A1 (fr) 2008-02-13

Family

ID=36699219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06742870A Withdrawn EP1885510A1 (fr) 2005-06-03 2006-05-11 Procede et dispositif pour appliquer des boudins de masse pateuse

Country Status (3)

Country Link
EP (1) EP1885510A1 (fr)
DE (1) DE102005026050A1 (fr)
WO (1) WO2006128560A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055112A1 (de) * 2006-11-21 2008-05-29 Billhöfer Maschinenfabrik GmbH & Co. KG Vorrichtung zum Beschichten einer geschweißten oder geklebten Naht eines Behälters, zugehöriges Verfahren und nach diesem Verfahren hergestellter Behälter
CN102513265A (zh) * 2011-12-06 2012-06-27 上海义馨控制设备有限公司 一种灌胶一体机设备及其涂胶方法
DE102013020629A1 (de) * 2013-12-16 2015-06-18 Sca Schucker Gmbh & Co. Kg Verfahren zum Auftragen einer viskosen Masse
DE102015207021B3 (de) * 2015-04-17 2016-06-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Applikationsdüse zum Applizieren eines Mediums auf eine Oberfläche, Applikationsanlage und Verfahren zum Applizieren eines Mediums auf eine Oberfläche
DE102016207707B4 (de) * 2016-05-04 2024-05-29 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Bestimmen der Komponentenanteile eines Klebstoffes mit zumindest zwei Komponenten
FI128096B (fi) 2017-01-23 2019-09-30 Oy Pro Hydro Ab Avoin aika -kompensoitu liimausprosessi ja liimauslaitteisto
DE102019212373A1 (de) * 2019-08-19 2021-02-25 Rampf Holding Gmbh & Co. Kg Dosieranlage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040732A (en) * 1990-07-12 1991-08-20 Brunswick Corporation Paint spray gun
US5891526A (en) * 1995-12-01 1999-04-06 International Business Machines Corporation Apparatus for mixing a multi-component encapsulant and injecting it through a heated nozzle onto a part to be encapsulated
US6467893B1 (en) * 1998-12-28 2002-10-22 Fuji Photo Film Co., Ltd. Method and apparatus for forming image with plural coating liquids
US6742549B1 (en) * 2003-01-21 2004-06-01 Fqubed Method and apparatus for quasi-continuous and quasi-simultaneous dispensing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006128560A1 *

Also Published As

Publication number Publication date
WO2006128560A1 (fr) 2006-12-07
DE102005026050A1 (de) 2006-12-07

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