EP0853502A1 - Method and device for metering viscous material - Google Patents
Method and device for metering viscous materialInfo
- Publication number
- EP0853502A1 EP0853502A1 EP96933417A EP96933417A EP0853502A1 EP 0853502 A1 EP0853502 A1 EP 0853502A1 EP 96933417 A EP96933417 A EP 96933417A EP 96933417 A EP96933417 A EP 96933417A EP 0853502 A1 EP0853502 A1 EP 0853502A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outlet valve
- proportional
- valve
- metering device
- proportional metering
- 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
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
- 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
- B05C11/1047—Apparatus or installations for supplying liquid or other fluent material comprising a buffer container or an accumulator between the supply source and the applicator
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- 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
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- 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 invention relates to a method according to the preamble of claim 1 and to a device according to the preamble of claim 6.
- This application can take place both by hand and by program-controlled handling machines, as described, for example, in DE-C 32 36 647.
- the object of the present invention is to provide a method and a device by which the flow behavior of thick substances is influenced in a simple manner so that the same amount can always be dispensed per unit of time with nozzle openings of the same size.
- Strengthening or shearing of the thick matter is strengthened by providing a mixing section, for example by installing a static mixing tube in the inlet of the proportioner.
- the further development according to claim 4 avoids differences in viscosity caused by temperature changes.
- the development according to claim 7 has the advantage that the otherwise previously known switching valve at the outlet of the proportional metering device can be omitted and the outlet valve can be connected directly to the pressure chamber of the proportional metering device. This further minimizes the control effort.
- the development according to claim 8 has the advantage that the thick matter is conveyed discontinuously into the proportional metering device, so that thick matter does not have to be stored there over longer waiting times, which in turn lead to viscosity differences. This ensures that the thick materials are drummed or sheared sufficiently immediately before application.
- Claim 12 describes a simple way to provide a volumetric control.
- the thixotropy can be kept constant by relieving the pressure on the conveying capacity during production downtimes.
- Figure 1 is a schematic arrangement of a system for dosing
- Figure 2 is a schematic cross section through the proportional meter with flanged outlet valve.
- the invention is explained on the basis of the application of an adhesive to a component 1, which can be part of a motor vehicle but need not be.
- the adhesive is provided in two drums 2 and 3.
- Each barrel is provided with a feed pump 4, 5.
- Their two pressure lines unite in the node 6, from which a return line 7, 8 branches off for each barrel 2, 3.
- a pressure relief valve 9, 10 is installed in each return line. Both feed pumps are operated one after the other, so that only one barrel is used for delivery.
- a delivery line 11 runs from the node 6 to a proportional metering device 12.
- the delivery line 11 can be relieved of pressure by the pressure relief valves 9, 10 during the downtime / standby time of the system, so that a constant thixotropy is achieved.
- the proportional metering device 12 is connected directly to an outlet valve 13. Both, proportional metering device 12 and outlet valve 13, are carried by an automatic handling device 14 and guided along the application surfaces of the workpiece 1 according to a preprogrammed path. The proportional dosing device and the outlet valve are controlled via the control of the handling machine, so that no separate control is necessary.
- This Heat transfer circuit 15 includes a heating device 16 and a recooling device 17 and a feed pump, not shown. This makes it possible to keep the adhesive at a constant temperature at all times.
- the entire delivery line 11 is not tempered, but only a part of it. It has been found that it is sufficient to temper about 30 times the volume of the application, which in practice corresponds to about 6 m of delivery line.
- the proportional metering device with flanged outlet valve is shown in more detail in FIG.
- the proportional metering device 12 is driven pneumatically.
- it has a piston 18 which is arranged movably in a pressure chamber 19 and is supplied with compressed air in a controlled manner via a proportional valve 36.
- the piston is connected to a piston rod 20 and is extended beyond the pressure chamber 19 into a metering chamber 22.
- the feed line 11 is connected to the metering chamber 22 with the interposition of a shut-off valve 23 and a static mixing tube 35.
- An outlet 24 from the metering chamber 22 opens directly into the outlet valve 13 above a valve needle 25.
- the adhesive is discharged through a nozzle 26 when the outlet valve 13 is open.
- the outlet valve 13 is also controlled pneumatically.
- the nozzle needle 25 is connected to a control piston 27 which opens against the force of a spring 28.
- the outlet valve 13 is controlled via a 2/2-way valve 29.
- the proportional metering device 12 has three proximity switches 30, 31 and 32, which detect the piston travel.
- the proximity switch 30 detects the rest position of the piston 18. In this position, the shut-off valve 23 can be opened and the metering chamber 22 can be filled.
- the proximity switch 31 detects the minimum order quantity, ie the piston 18 reaches this position, the piston rod 20 has rolled through the adhesive introduced into the metering chamber 22 but only pushed out a small amount of adhesive via the opened outlet valve 13.
- the proximity switch 32 indicates the maximum discharge amount, i.e. If the piston 18 reaches this proximity switch, the piston rod 20 is located near the lower end of the metering chamber 22. Thus, the greatest possible amount of adhesives has been pushed out through the opened outlet valve 13.
- the amount of adhesive applied can also be monitored and regulated using these three proximity switches.
- the proximity switches 30 to 32 are arranged in relation to one another in accordance with the desired order quantity.
- the pistons are applied, a position is reached between the proximity switches 31 and 32, i.e. if it passes over the proximity switch 31 but does not reach the proximity switch 32, the order quantity is in order.
- FIG. 2 also shows a possibility of temperature control in the delivery line 11, namely the delivery line 11 is double-walled.
- a heat transfer medium can then circulate between its inner wall 33 and its outer wall 34 and thus this conveyor line section keep at constant temperature.
- the switching valve 23 can also be integrated in the heat transfer circuit, as can the metering chamber 22 of the proportional metering device and the area around the nozzle needle 25 of the outlet valve 13.
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Abstract
In order to apply viscous material, for example adhesives or sealants, in an optimum manner, the invention proposes combining the proportional metering device and the outlet valve to form a structural unit, integrating a static mixer tube in the filler opening, and partially tempering the feed line so as to maintain the viscous material located in the feed line at a constant temperature.
Description
Verfahren und Vorrichtung zum Dosieren von DickstoffenMethod and device for dosing thick matter
Die Erfindung bezieht sich auf ein Verfahren nach dem Oberbegriff des 1. An¬ spruchs und auf eine Vorrichtung nach dem Oberbegriff des 6. Anspruchs.The invention relates to a method according to the preamble of claim 1 and to a device according to the preamble of claim 6.
Auf vielen Gebieten der Technik, insbesondere bei der automatisierten Fertigung von Kraftfahrzeugkarosserien, ist es erforderlich, Dickstoffe, insbesondere Dicht- und Klebmittel, auf irgendwelche Flächen aufzubringen. Beispielsweise werden bei Kraftfahrzeugen entlang Kanten, Falzen oder Nähten von Karosserieteilen Dicht- und Klebstoff-Fäden bzw. dünne Streifen aufgebracht.In many areas of technology, in particular in the automated production of motor vehicle bodies, it is necessary to apply thick materials, in particular sealants and adhesives, to any surface. For example, sealing and adhesive threads or thin strips are applied to motor vehicles along edges, folds or seams of body parts.
Dieses Aufbringen kann sowohl von Hand als auch von programmgesteuerten Handhabungsautomaten, wie es beispielsweise in der DE-C 32 36 647 beschrie¬ ben ist, erfolgen.This application can take place both by hand and by program-controlled handling machines, as described, for example, in DE-C 32 36 647.
In der Praxis sind derartige Auftragsvorgänge mit erheblichen Schwierigkeiten ver¬ bunden, weil einmal eine schnelle Fertigung gewünscht und zum anderen eine genügend und möglichst gleichmäßige Auftragung des Dickstoffes verlangt wird. Hierbei ist zu berücksichtigen, daß gleiche Dickstoffe immer wieder unterschied¬ liche Fließeigenschaften infolge unterschiedlicher Viskosität haben und zwar auch dann, wenn es sich um Dickstoffe derselben Herstellungscharge handelt, die in
kürzester Zeit verarbeitet werden. Dadurch wird die gleichmäßige oder dosiert ver¬ änderbare Ausgabe der Dickstoffe erheblich beeinträchtigt.In practice, such application processes are associated with considerable difficulties because, on the one hand, rapid production is required and, on the other hand, an adequate and as even as possible application of the thick material is required. It must be taken into account here that the same thick materials always have different flow properties as a result of different viscosities, even if thick materials of the same production batch are concerned, which in processed in the shortest possible time. As a result, the uniform or metered output of the thick matter is considerably impaired.
Die bereits bekanntgewordenen Vorrrichtungen mit sehr feinfühligen Regelkreisen führen trotz großem Aufwand aufgrund ihrer großen Anfälligkeit nicht zu dauerhaft gewünschtem Ergebnis.The devices which have already become known and have very sensitive control loops do not lead to the long-term desired result, despite their great complexity, because of their great vulnerability.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren und eine Vorrichtung bereitzustellen, durch welche in einfacher Weise das Fließverhalten von Dick- Stoffen so beeinflußt wird, daß bei gleich großen Düsenöffnungen immer gleiche Menge pro Zeiteinheit ausgegeben werden können.The object of the present invention is to provide a method and a device by which the flow behavior of thick substances is influenced in a simple manner so that the same amount can always be dispensed per unit of time with nozzle openings of the same size.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des 1. bzw. 6. An¬ spruchs gelöst. Dadurch, daß das Auslaßventil und die Proportionierung unmittel- bar miteinander verbunden sind, ist es möglich, unmittelbar vor dem Auftrag zu proportionieren und anschließend direkt auszutragen. Dadurch entfallen die bisher bekannten langen Strömungswege zwischen der Proportionierung und dem Aus¬ laßventil, die zu Ungenauigkeiten der Ausflußrate pro Zeiteinheit geführt haben. Weiterhin entfallen dadurch die zusätzlichen Förderleitungen. Ein weiterer Vorteil ist darin zu sehen, daß unmittelbar beim Füllen des Proportionierers die auszutra¬ genden Dickstoffe ausreichend gewalkt bzw. geschert werden können.According to the invention, this object is achieved by the features of claims 1 and 6, respectively. Because the outlet valve and the proportioning are directly connected to one another, it is possible to proportion directly before the order and then to carry it out directly. This eliminates the previously known long flow paths between the proportioning and the outlet valve, which have led to inaccuracies in the outflow rate per unit of time. This also eliminates the additional delivery lines. Another advantage is the fact that the thick matter to be discharged can be drummed or sheared sufficiently when the proportioner is filled.
Eine Verstärkung des Durchwalkers bzw. Scherens der Dickstoffe wird durch das Vorsehen einer Mischstrecke, beispielsweise durch Einbau eines statischen Misch- rohres im Einlauf des Proportionierers, erreicht.Strengthening or shearing of the thick matter is strengthened by providing a mixing section, for example by installing a static mixing tube in the inlet of the proportioner.
Als besonders vorteilhaft hat sich die Weiterbildung nach Anspruch 3 herausge¬ stellt. Dadurch wird der Regelaufwand minimiert und trotzdem ausgezeichnete Er¬ gebnisse erzielt.The further development according to claim 3 has proven to be particularly advantageous. This minimizes the control effort and still achieves excellent results.
Durch die Weiterbildung nach Anspruch 4 werden Viskositätsunterschiede, hervor¬ gerufen durch Temperaturänderungen, vermieden.
Die Weiterbildung nach Anspruch 7 hat den Vorteil, daß das sonst bisher bekannte Schaltventil am Auslaß des Proportionaldosierers entfallen kann und das Ausla߬ ventil direkt an der Druckkammer des Proportionaldosierers angeschlossen werden kann. Dadurch wird der Steuerungsaufwand weiter minimiert.The further development according to claim 4 avoids differences in viscosity caused by temperature changes. The development according to claim 7 has the advantage that the otherwise previously known switching valve at the outlet of the proportional metering device can be omitted and the outlet valve can be connected directly to the pressure chamber of the proportional metering device. This further minimizes the control effort.
Durch die Weiterbildung nach Anspruch 8 wird der Vorteil erzielt, daß die Dick¬ stoffe diskontinuierlich in den Proportionaldosierer gefördert werden, so daß dort nicht Dickstoffe bevorratet werden müssen über längere Wartezeiten, die wie¬ derum zu Viskositätsunterschieden führen. Damit ist sichergestellt, daß unmittelbar vor dem Auftrag die Dickstoffe ausreichend gewalkt bzw, geschert werden.The development according to claim 8 has the advantage that the thick matter is conveyed discontinuously into the proportional metering device, so that thick matter does not have to be stored there over longer waiting times, which in turn lead to viscosity differences. This ensures that the thick materials are drummed or sheared sufficiently immediately before application.
Durch die Weiterbildung nach Anspruch 9 werden Viskositätsunterschiede auf¬ grund von Temperaturunterschieden vermieden. Hierbei ist es nicht erforderlich, die gesamte Förderleitung zwischen dem Vorratsbehalter und dem Proportional- dosierer zu temperieren. Ausreichend ist das 30fache Auftragsvolumen zu tempe¬ rieren. Unter Temperieren wird hier ein Erzielen einer konstanten Temperatur ver¬ standen, d.h. je nach Umgebungseinflüssen ein Heizen oder Kühlen.The further development according to claim 9 avoids differences in viscosity due to temperature differences. It is not necessary to temper the entire delivery line between the storage container and the proportional metering device. The 30-fold order volume is sufficient to be tempered. Tempering here is understood to mean achieving a constant temperature, i.e. Depending on the environmental influences, heating or cooling.
Die Weiterbildung nach Anspruch 10 beschreibt eine bevorzugte Ausgestaltung zum Temperieren. Hierbei hat es sich als sinnvoll erwiesen, auch den Proportional¬ dosierer und das Auslaßventil mit einzubeziehen, wie Anspruch 11 vorschlägt.The development according to claim 10 describes a preferred embodiment for tempering. It has proven to be useful here to also include the proportional metering device and the outlet valve, as proposed in claim 11.
Anspruch 12 beschreibt eine einfache Möglichkeit, eine volumetrische Regelung vorzusehen.Claim 12 describes a simple way to provide a volumetric control.
Durch die Druckentlastung der Förderleistungen bei Produktionsstillständen kann die Thixotropie konstant gehalten werden.The thixotropy can be kept constant by relieving the pressure on the conveying capacity during production downtimes.
Durch die Weiterbildung der Erfindung gemäß Anspruch 14 wird die Durch- mischung bzw. Durchwalkung des zu dosierenden Dickstoffes weiter gefördert.The further development of the invention according to claim 14 further promotes the mixing or walking through of the thick matter to be metered.
Im folgenden wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert.
Es stellt dar:The invention is explained in more detail below on the basis of a preferred exemplary embodiment. It shows:
Figur 1 eine schematisierte Anordnung einer Anlage zum Dosieren vonFigure 1 is a schematic arrangement of a system for dosing
Dickstoffen;Thick matter;
Figur 2 einen schematisierten Querschnitt durch den Proportionaldosierer mit angeflanschtem Auslaßventil.Figure 2 is a schematic cross section through the proportional meter with flanged outlet valve.
Erläutert wird die Erfindung anhand der Auftragung eines Klebstoffes auf ein Bau- teil 1 , das ein Teil eines Kraftfahrzeuges sein kann, aber nicht sein muß.The invention is explained on the basis of the application of an adhesive to a component 1, which can be part of a motor vehicle but need not be.
Der Klebstoff wird in zwei Fässern 2 und 3 bereitgestellt. Jedes Faß ist mit einer Förderpumpe 4, 5 versehen. Ihre beiden Druckleitungen vereinigen sich in dem Knotenpunkt 6, von dem auch zu jedem Faß 2, 3 eine Rücklaufleitung 7, 8 ab- zweigt. In jeder Rücklaufleitung ist ein Druckentlastungsventil 9, 10 eingebaut. Beide Förderpumpen werden hintereinander betrieben, so daß immer nur aus einem Faß geliefert wird.The adhesive is provided in two drums 2 and 3. Each barrel is provided with a feed pump 4, 5. Their two pressure lines unite in the node 6, from which a return line 7, 8 branches off for each barrel 2, 3. A pressure relief valve 9, 10 is installed in each return line. Both feed pumps are operated one after the other, so that only one barrel is used for delivery.
Vom Knotenpunkt 6 aus verläuft eine Förderleitung 11 zu einem Proportional- dosierer 12.A delivery line 11 runs from the node 6 to a proportional metering device 12.
Die Förderleitung 11 kann durch die Druckentlastungsventiie 9, 10 während der Stillstandszeit/Bereitschaftszeit der Anlage druckentlastet werden, so daß eine konstante Thixotropie erreicht wird.The delivery line 11 can be relieved of pressure by the pressure relief valves 9, 10 during the downtime / standby time of the system, so that a constant thixotropy is achieved.
Der Proportionaldosierer 12 ist mit einem Auslaßventil 13 unmittelbar verbunden. Beide, Proportionaldosierer 12 und Auslaßventil 13, werden von einem Handha¬ bungsautomaten 14 getragen und entsprechend eines vorprogrammierten Weges entlang den Auftragsflächen des Werkstückes 1 geführt. Die Steuerung des Pro- portionaldosierers und des Auslaßventils geschieht über die Steuerung des Hand¬ habungsautomaten, so daß keine separate Steuerung notwendig ist.The proportional metering device 12 is connected directly to an outlet valve 13. Both, proportional metering device 12 and outlet valve 13, are carried by an automatic handling device 14 and guided along the application surfaces of the workpiece 1 according to a preprogrammed path. The proportional dosing device and the outlet valve are controlled via the control of the handling machine, so that no separate control is necessary.
Ein Teil der Länge der Förderleitung 11 sowie des Proportionaldosierers 12 und des Auslaßventils 13 sind Bestandteil eines Wärmeträgerkreislaufes 15. Dieser
Wärmeträgerkreislauf 15 beinhaltet eine Heizeinrichtung 16 sowie eine Rück¬ kühleinrichtung 17 und eine nicht näher dargestellte Förderpumpe. Damit ist es möglich, den Klebstoff immer auf konstante Temperatur zu halten.Part of the length of the delivery line 11 and the proportional meter 12 and the outlet valve 13 are part of a heat transfer circuit 15. This Heat transfer circuit 15 includes a heating device 16 and a recooling device 17 and a feed pump, not shown. This makes it possible to keep the adhesive at a constant temperature at all times.
Wie in Figur 1 deutlich sichtbar ist, ist nicht die gesamte Förderleitung 11 tempe¬ riert, sondern nur ein Teil von ihr. Es hat sich herausgestellt, daß es ausreichend ist, etwa das 30fache des Auftragsvolumens zu temperieren, was in der Praxis in etwa 6 m Förderleitung entspricht.As can be clearly seen in FIG. 1, the entire delivery line 11 is not tempered, but only a part of it. It has been found that it is sufficient to temper about 30 times the volume of the application, which in practice corresponds to about 6 m of delivery line.
In Figur 2 ist der Proportionaldosierer mit angeflanschtem Auslaßventil näher dar¬ gestellt.The proportional metering device with flanged outlet valve is shown in more detail in FIG.
Der Proportionaldosierer 12 wird pneumatisch angetrieben. Er weist hierzu einen Kolben 18 auf, der in einem Druckraum 19 beweglich angeordnet ist und über ein Proportionalventil 36 gesteuert mit Druckluft versorgt wird.The proportional metering device 12 is driven pneumatically. For this purpose, it has a piston 18 which is arranged movably in a pressure chamber 19 and is supplied with compressed air in a controlled manner via a proportional valve 36.
Der Kolben ist mit einer Kolbenstange 20 verbunden und über den Druckraum 19 hinaus verlängert ist bis in eine Dosierkammer 22.The piston is connected to a piston rod 20 and is extended beyond the pressure chamber 19 into a metering chamber 22.
Die Förderleitung 11 ist unter Zwischenschaltung eines Absperrventiles 23 und eines statischen Mischrohres 35 an die Dosierkammer 22 angeschlossen.The feed line 11 is connected to the metering chamber 22 with the interposition of a shut-off valve 23 and a static mixing tube 35.
Ein Auslaß 24 aus der Dosierkammer 22 mündet direkt in das Auslaßventil 13 oberhalb einer Ventilnadel 25. Durch eine Düse 26 wird bei geöffnetem Auslaß- ventil 13 der Klebstoff ausgetragen.An outlet 24 from the metering chamber 22 opens directly into the outlet valve 13 above a valve needle 25. The adhesive is discharged through a nozzle 26 when the outlet valve 13 is open.
Das Auslaßventil 13 wird ebenfalls pneumatisch angesteuert. Hierzu ist die Düsen¬ nadel 25 mit einem Steuerkolben 27 verbunden, der gegen die Kraft einer Feder 28 öffnet. Gesteuert wird das Auslaßventil 13 über ein 2/2-Wegeventil 29.The outlet valve 13 is also controlled pneumatically. For this purpose, the nozzle needle 25 is connected to a control piston 27 which opens against the force of a spring 28. The outlet valve 13 is controlled via a 2/2-way valve 29.
Zur Volumensteuerung weist der Proportionaldosierer 12 drei Näherungsschalter 30, 31 und 32 auf, die den Kolbenweg erfassen. Hierbei erfaßt der Näherungs¬ schalter 30 die Ruhelage des Kolbens 18. In dieser Stellung kann das Absperr¬ ventil 23 geöffnet werden und die Dosierkammer 22 gefüllt werden.
Der Näherungsschalter 31 erfaßt die minimale Auftragsmenge, d.h. erreicht der Kolben 18 diese Stellung, hat die Kolbenstange 20 den in der Dosierkammer 22 eingebrachten Klebstoff durchgewalkt aber nur eine geringe Klebstoffmenge über das geöffnete Auslaßventil 13 ausgeschoben.For volume control, the proportional metering device 12 has three proximity switches 30, 31 and 32, which detect the piston travel. Here, the proximity switch 30 detects the rest position of the piston 18. In this position, the shut-off valve 23 can be opened and the metering chamber 22 can be filled. The proximity switch 31 detects the minimum order quantity, ie the piston 18 reaches this position, the piston rod 20 has rolled through the adhesive introduced into the metering chamber 22 but only pushed out a small amount of adhesive via the opened outlet valve 13.
Der Näherungsschalter 32 kennzeichnet die maximale Austragsmenge, d.h. er¬ reicht der Kolben 18 diesen Näherungsschalter, befindet sich die Kolbenstange 20 nahe dem unteren Ende der Dosierkammer 22. Somit ist die größtmöglichste Menge an Klebstoffen durch das geöffnete Auslaßventil 13 ausgeschoben worden.The proximity switch 32 indicates the maximum discharge amount, i.e. If the piston 18 reaches this proximity switch, the piston rod 20 is located near the lower end of the metering chamber 22. Thus, the greatest possible amount of adhesives has been pushed out through the opened outlet valve 13.
Dementsprechend kann auch mit diesen drei Näherungsschaltern die Klebstoffauf¬ tragsmenge überwacht und geregelt werden. Dazu werden die Näherungsschalter 30 bis 32 entsprechend der gewünschten Auftragsmenge zueinander angeordnet. Erreicht bei einem Auftrag der Kolben eine Stellung zwischen dem Näherungs¬ schalter 31 und 32, d.h. er überfährt den Näherungsschalter 31 gelangt aber nicht bis zum Näherungsschalter 32, so ist die Auftragsmenge in Ordnung.Accordingly, the amount of adhesive applied can also be monitored and regulated using these three proximity switches. For this purpose, the proximity switches 30 to 32 are arranged in relation to one another in accordance with the desired order quantity. When the pistons are applied, a position is reached between the proximity switches 31 and 32, i.e. if it passes over the proximity switch 31 but does not reach the proximity switch 32, the order quantity is in order.
Erreicht der Kolben 18 nur den Näherungsschalter 31 , so ist nur die Minimalmenge ausgetragen worden, der Dosierdruck kann für den nachfolgenden Auftrag über das Proportionalventil 36 erhöht werden.If the piston 18 only reaches the proximity switch 31, only the minimum quantity has been discharged, and the metering pressure can be increased for the subsequent job via the proportional valve 36.
Erreicht der Kolben nach dem Klebstoffauftrag den Max.-Schalter, so ist die etwas mehr als die notwendige Menge ausgeschoben worden. Für den nächsten Auf- tragsvorgang wird dann der Dosierdruck im Druckraum 19 erniedrigt. Werden bei einem Auftragsvorgang der Näherungsschalter 31 nicht erreicht bzw. fährt der Kol¬ ben über den Näherungsschalter 32 hinaus weiter nach unten, so ist die Aus¬ tragsmenge in beiden Fällen nicht in Ordnung und die Anlage meldet einen Stör¬ fall.If the piston reaches the max. Switch after the adhesive has been applied, the slightly more than the required amount has been pushed out. The metering pressure in the pressure chamber 19 is then reduced for the next application process. If the proximity switch 31 is not reached during an application process, or if the piston moves downward beyond the proximity switch 32, the discharge quantity is not in order in both cases and the system reports a malfunction.
In Figur 2 ist weiterhin noch bei der Förderleitung 11 eine Möglichkeit der Tempe¬ rierung dargestellt, indem nämlich die Förderleitung 11 doppelwandig ausgebildet ist. Hierbei kann dann zwischen ihrer inneren Wandung 33 und ihrer äußeren Wandung 34 ein Wärmeträger zirkulieren und so diesen Förderleitungsabschnitt
auf konstante Temperatur halten. Selbstverständlich kann auch das Schaltventil 23 in den Wärmeträgerkreislauf eingebunden sein, ebenso wie die Dosierkammer 22 des Proportionaldosierers und der Bereich um die Düsennadel 25 des Auslaß- ventiles 13.
FIG. 2 also shows a possibility of temperature control in the delivery line 11, namely the delivery line 11 is double-walled. In this case, a heat transfer medium can then circulate between its inner wall 33 and its outer wall 34 and thus this conveyor line section keep at constant temperature. Of course, the switching valve 23 can also be integrated in the heat transfer circuit, as can the metering chamber 22 of the proportional metering device and the area around the nozzle needle 25 of the outlet valve 13.
Claims
1. Verfahren zum Dosieren von Dickstoffen, die aus einem Vorrat unter Druck gefördert, anschließend proportioniert und über ein gesteuertes Ausla߬ ventil auf eine Applikationsstelle aufgetragen werden, dadurch gekennzeichnet, daß die Proportionierung unmittelbar vor dem Auslaßventil für jede Auftragsmenge separat stattfindet.1. A method for dosing thick materials, which are conveyed from a supply under pressure, then proportioned and applied to an application point via a controlled outlet valve, characterized in that the proportioning takes place separately in front of the outlet valve for each application quantity.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß vor der Proportionierung der Dickstoffe diese durchgemischt werden.2. The method according to claim 1, characterized in that prior to the proportioning of the thick matter, these are mixed.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Proportionierung mit Hilfe rein volumetri- scher Regelung geschieht, indem bei Abweichungen in der Auftragsmenge bei einem Auslaßvorgang der nachfolgende Auslaßvorgang auf Soll-Wert ausgeregelt wird.3. The method according to claim 1 or 2, characterized in that the proportioning takes place with the aid of purely volumetric control, in that in the event of deviations in the order quantity during an outlet operation, the subsequent outlet operation is corrected to the desired value.
Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Zuleitung zwischen dem Vorrat und dem Proportionierer auf einer Länge, die ca. dem 30fachen Auftragsvolumen des Proportionierers entspricht, temperiert ist. Method according to one of the preceding claims, characterized in that the supply line between the supply and the proportioner is tempered to a length which corresponds to approximately 30 times the order volume of the proportioner.
5. Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß während der Bereitschaftszeit der Vorrich¬ tung der Förderdruck abgebaut wird.5. The method according to any one of the preceding claims, characterized in that the delivery pressure is reduced during the standby time of the device.
6. Vorrichtung zum Dosieren von Dickstoffen, bestehend aus mindestens einem Vorratsbehalter und einer Förderpumpe, die über eine Förderleitung mit einem Proportionaldosierer verbunden ist sowie einem gesteuerten Auslaßventil, dadurch gekennzeichnet, daß das Auslaßventil (13) unmittelbar an dem6. Device for dosing thick matter, consisting of at least one reservoir and a feed pump, which is connected via a feed line to a proportional metering device and a controlled outlet valve, characterized in that the outlet valve (13) directly on the
Proportionaldosierer (12) angebaut ist.Proportional dispenser (12) is attached.
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das Auslaßventil (13) über ein Schaltventil separat ansteuerbar ist.7. The device according to claim 6, characterized in that the outlet valve (13) can be controlled separately via a switching valve.
8. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß in der Förderleitung (11) vor dem Propor¬ tionaldosierer (12) ein Absperrventil (23) angeordnet ist.8. Apparatus according to claim 6 or 7, characterized in that a shut-off valve (23) is arranged in the delivery line (11) before the proportional dosing device (12).
9. Vorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß die Förderleitung (11) - ausgehend vom Pro¬ portionaldosierer (12) - auf einer Länge von ca. dem 30fachen Auftrags¬ volumen des Proportionaldosierers (12) temperierbar ist.9. Device according to one of claims 6 to 8, characterized in that the delivery line (11) - starting from the proportional metering device (12) - can be tempered over a length of approximately 30 times the order volume of the proportional metering device (12).
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Temperierung einen Wärmeträgerkreis¬ lauf umfaßt, in dem Heiz- und Kühleinrichtungen für den Wärmeträger ein¬ gebaut sind.10. The device according to claim 9, characterized in that the temperature control comprises a heat transfer circuit in which heating and cooling devices for the heat transfer medium are installed.
11. Vorrichtung nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, daß der Proportionaldosierer mit dem Auslaßventil (13) in den Wärmeträgerkreislauf eingebunden ist. 11. Device according to one of claims 6 to 10, characterized in that the proportional metering device with the outlet valve (13) is integrated into the heat transfer circuit.
12. Vorrichtung nach einem der Ansprüche 6 bis 11 , dadurch gekennzeichnet, daß der Proportionaldosierer (12) mit einer Hub¬ steuerung ausgerüstet ist.12. Device according to one of claims 6 to 11, characterized in that the proportional metering device (12) is equipped with a stroke control.
13. Vorrichtung nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, daß in der Förderleitung (11) ein Druckentlas¬ sungsventil eingebaut ist.13. Device according to one of claims 6 to 12, characterized in that a Druckentlas¬ solution valve is installed in the delivery line (11).
14. Vorrichtung nach einem der Ansprüche 6 bis 13, dadurch gekennzeichnet, daß zwischen dem Absperrventil (23) und der14. Device according to one of claims 6 to 13, characterized in that between the shut-off valve (23) and the
Dosierkammer (22) des Proportionaldosierers ein statisches Mischrohr (35) vorgesehen ist. Dosing chamber (22) of the proportional metering a static mixing tube (35) is provided.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19536623 | 1995-09-30 | ||
| DE19536623A DE19536623C1 (en) | 1995-09-30 | 1995-09-30 | Device for metering out thick substances |
| PCT/EP1996/004238 WO1997012692A1 (en) | 1995-09-30 | 1996-09-27 | Method and device for metering viscous material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0853502A1 true EP0853502A1 (en) | 1998-07-22 |
| EP0853502B1 EP0853502B1 (en) | 2001-08-22 |
Family
ID=7773777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96933417A Revoked EP0853502B1 (en) | 1995-09-30 | 1996-09-27 | Method and device for metering viscous material |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6092691A (en) |
| EP (1) | EP0853502B1 (en) |
| DE (2) | DE19536623C1 (en) |
| ES (1) | ES2161376T3 (en) |
| WO (1) | WO1997012692A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018102238A1 (en) | 2018-02-01 | 2019-08-01 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Bonding and sealing seams and joints |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE508434C2 (en) * | 1996-02-23 | 1998-10-05 | Scanrex Automation Ab | Method and system of dosing |
| AUPO247496A0 (en) | 1996-09-23 | 1996-10-17 | Resmed Limited | Assisted ventilation to match patient respiratory need |
| DE19742711C1 (en) * | 1997-09-26 | 1999-05-20 | Intec Bielenberg Gmbh & Co Kg | Device for applying adhesive dots on a substrate |
| DE19907166A1 (en) * | 1999-02-19 | 2000-08-24 | Loctite Deutschland Gmbh | Regulating predefined liquid product temp. and predefined product output pressure involves heating pre-heated product in heating tube with additional heating element using PID regulation |
| US6540104B1 (en) * | 2000-06-30 | 2003-04-01 | Fanuc Robotics North America, Inc. | Integral pneumatic dispenser and method for controlling same |
| CN100457290C (en) * | 2001-10-17 | 2009-02-04 | 武藏工程株式会社 | Liquid material delivering method and device therefor |
| DE10306387B4 (en) * | 2003-02-15 | 2005-12-15 | Robatech Ag | Apparatus and method for the controlled provision of a flowable medium |
| DE102006047658B4 (en) * | 2006-09-29 | 2009-03-19 | Ing. Erich Pfeiffer Gmbh | Microdosing device for a liquid medium |
| US7980197B2 (en) * | 2006-11-03 | 2011-07-19 | Illinois Tool Works, Inc. | Method and apparatus for dispensing a viscous material on a substrate |
| US9162249B2 (en) * | 2008-10-01 | 2015-10-20 | Panasonic Intellectual Property Management Co., Ltd. | Paste dispenser for applying paste containing fillers using nozzle with pin and application method using the same |
| US10407234B2 (en) * | 2012-09-05 | 2019-09-10 | Henkel IP & Holding GmbH | Two component fluid metering and mixing system |
| KR20220072827A (en) * | 2019-10-07 | 2022-06-02 | 가부시끼가이샤 쓰리본드 | Dispensing device, moving member and distribution control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3662927A (en) * | 1970-01-21 | 1972-05-16 | Eric H Cocks | Hot-melt adhesive systems |
| DE3236647C2 (en) * | 1982-10-04 | 1985-02-28 | Intec Bielenberg GmbH & Co KG, 5014 Kerpen | Device for dispensing thick materials, in particular sealants and adhesives |
| FR2535627A1 (en) * | 1982-11-08 | 1984-05-11 | Vigan Sa | Heating device for the application of a pasty substance, especially an adhesive or a mastic. |
| US4530862A (en) * | 1983-04-29 | 1985-07-23 | Spraymation, Inc. | Control system and method for dispensing a liquid |
| DE3510110A1 (en) * | 1985-03-20 | 1986-10-02 | Walter Graf U. Co Gmbh & Co, 6980 Wertheim | Precision metering appliance and process for the precision metering of liquid media |
| DE3620875A1 (en) * | 1986-06-21 | 1988-01-21 | Intec Bielenberg Gmbh & Co Kg | Process for the dispensing of viscous substances, in particular sealants and adhesives |
| DE3624844A1 (en) * | 1986-07-23 | 1988-01-28 | Josef Schucker | TEMPERATURE DEVICE FOR LIQUID ADHESIVES |
| EP0412978B1 (en) * | 1988-04-20 | 1992-11-11 | Lenhardt Maschinenbau GmbH | Device for dispensing high-viscosity pasty compressible substances |
| DE3912920A1 (en) * | 1988-04-20 | 1989-12-28 | Lenhardt Maschinenbau | Device for delivering highly-viscous, pasty substances, in particular for applying sealants and adhesives to bodywork parts in bodywork construction |
| DE3935709A1 (en) * | 1989-10-26 | 1991-05-02 | Electronal Ges Fuer Elektronik | METHOD AND DEVICE FOR APPLYING SMALL QUANTITIES OF A PASTOUS MASS TO CIRCUIT BOARDS |
| IT1243378B (en) * | 1990-07-27 | 1994-06-10 | Loctite Corp | PROCEDURE AND PLANT FOR THE DISPENSING PARTICULARLY OF A SEALANT / ADHESIVE PRODUCT |
| DE4209065C2 (en) * | 1992-03-20 | 1994-01-13 | Opco Oberflaechentechnik Gmbh | Valve and dosing device |
| DE4440243A1 (en) * | 1994-11-11 | 1996-05-15 | Schwerdtel Ludwig Gmbh | Dosing device for viscous materials |
-
1995
- 1995-09-30 DE DE19536623A patent/DE19536623C1/en not_active Expired - Fee Related
-
1996
- 1996-09-27 DE DE59607545T patent/DE59607545D1/en not_active Revoked
- 1996-09-27 ES ES96933417T patent/ES2161376T3/en not_active Expired - Lifetime
- 1996-09-27 WO PCT/EP1996/004238 patent/WO1997012692A1/en not_active Application Discontinuation
- 1996-09-27 EP EP96933417A patent/EP0853502B1/en not_active Revoked
- 1996-09-27 US US09/043,673 patent/US6092691A/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9712692A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018102238A1 (en) | 2018-02-01 | 2019-08-01 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Bonding and sealing seams and joints |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2161376T3 (en) | 2001-12-01 |
| WO1997012692A1 (en) | 1997-04-10 |
| US6092691A (en) | 2000-07-25 |
| DE19536623C1 (en) | 1996-10-02 |
| DE59607545D1 (en) | 2001-09-27 |
| EP0853502B1 (en) | 2001-08-22 |
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