EP0108887A2 - Coating apparatus - Google Patents

Coating apparatus Download PDF

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Publication number
EP0108887A2
EP0108887A2 EP83109170A EP83109170A EP0108887A2 EP 0108887 A2 EP0108887 A2 EP 0108887A2 EP 83109170 A EP83109170 A EP 83109170A EP 83109170 A EP83109170 A EP 83109170A EP 0108887 A2 EP0108887 A2 EP 0108887A2
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EP
European Patent Office
Prior art keywords
housing
toothed rollers
toothed
designed
medium
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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
EP83109170A
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German (de)
French (fr)
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EP0108887A3 (en
EP0108887B1 (en
Inventor
Johannes Zimmer
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Individual
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Individual
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Publication of EP0108887A3 publication Critical patent/EP0108887A3/en
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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
    • B05C5/0254—Coating heads with slot-shaped outlet
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B11/00—Treatment of selected parts of textile materials, e.g. partial dyeing
    • D06B11/0056—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics
    • D06B11/0063—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics by pouring
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller

Definitions

  • the invention relates to a device for the uniform application of flowable media, possibly via a template, to a carrier or to a web, the displacement channel for the medium being connected upstream of a displacement pump arrangement.
  • the object of the present invention is; to find an improved device for the uniform application of flowable media.
  • the positive-displacement pump arrangement has two toothed rollers floating in a housing and that the toothed rollers are movable until they come into contact with the inner wall of the housing.
  • the invention makes it possible to supply a flowable medium completely uniformly over very large working widths to the outlet channel for the medium.
  • the toothed rollers can be arranged very close to the outlet channel and the ink residues, e.g. of a printing process, are relatively small and are hardly significant.
  • the device is very simple, very reliable and not prone to failure.
  • FIG. 1 shows the device according to the invention in the idle state
  • FIG. 2 shows the device according to the invention in operation
  • FIG. 3 is an embodiment of the outlet channel as well as FIG. 4
  • FIG. 5 shows a detail of FIG. 4 in a section along the line AB , but only a part is shown
  • FIGS. 6 to 8 show different embodiments of the trailing edges of the outlet nozzle.
  • the device according to the invention consists of a housing 1 in which there is a recess 2. Two toothed rollers 3, 4 are arranged in this recess 2. These toothed rollers 3, 4 are in engagement with one another.
  • the two toothed rollers 3, 4 are arranged floating or flying in the recess 2, ie they can move in the radial direction within the housing. At least one of the toothed rollers 3 and 4 is ver at least at one end with axial play with a drive system (not shown) bound. In the idle state, the two toothed rollers 3, 4, as can be seen in FIG. 1, lie on the lower part of the inner surface of the recess 2 at points 5 and 6 due to their gravity.
  • the two toothed rollers 3, 4 convey the filled medium into the space 9, which is delimited by the lower part 10 of the inner wall 2 and the two toothed rollers 3, 4, upon rotation in the direction of the arrows 8.
  • a pressure is now built up in this space 9. This is indicated by point 11 and arrows 12, 13 and 14.
  • the forces in the direction of arrows 12 and 13 act on the toothed rollers 3 and 4 and shift them until they abut points 15 and 16 in the upper region of the inner wall 2.
  • the contact forces are symbolized by arrows 17 and 18.
  • the lowermost part of the housing 1 is designed as a slot nozzle 19 which has an outlet channel 20 and an outlet opening 21.
  • the pressure building up in space 9 also acts in the outlet channel 20; this is symbolized by the arrow 14 and the flowable medium located in the outlet channel 20 is pressed out completely uniformly through the outlet opening 21.
  • the flowable medium is conveyed completely evenly into the pressure chamber, so that there is a constant pressure in this room, which is passed on to the emerging medium over the entire working width.
  • the pressure and thus the amount of the flowing medium can be easily adjusted.
  • the flowable medium over a template 22 is introduced into a web 23, the web 23 running over a counter-pressure roller 24.
  • the template can also be omitted and that the flowable material - directly on a web or on another carrier, such. B. a plate, a profile body or the like., Can be applied.
  • the housing 1 itself displaceably and, if necessary, also height-adjustable. This is symbolized by the double arrow 25.
  • the inner surfaces of the housing 1 each surround part of the toothed rollers 3, 4 with play. It is advantageous if these surrounding inner surfaces of the housing are provided in the shape of a circular cylinder and their diameter is only slightly larger than the diameter of the respective toothed roller 3 or 4.
  • the flowable medium is formed by a foam, it is advantageous to divide the pressure space formed by the space 9 and the outlet channel 20 into chambers, as is shown in FIGS. 3 and 4. Many types of foam require very gentle treatment, otherwise they will collapse or be changed in their structure and then no longer meet the requirements. 3 and 4, the outlet channel 20 is provided with a circular-cylindrical chamber 26. This chamber 26 also completely compensates for the smallest pressure differences, so that no problems or irregularities occur when foam emerges into a web or onto a carrier.
  • the chambers 26 shown in FIGS. 3 and 4 have a circular cylindrical cross section. However, it is possible to design this cross-section differently and it is also possible to provide several, possibly smaller, chambers in succession.
  • the chambers 26 can be accessible from one or both ends in order to introduce a cleaning device which at the same time also cleans the connection between the chamber 26 and the space 9 or between the chamber 26 and the outlet by means of extensions.
  • the outlet openings 21 special, e.g. as shown in Fig.5.
  • one of the side walls 27 or both is provided with grooves 28, so that a sequence of individual channels with a very small cross section is formed in the outlet opening 21.
  • By attaching the grooves it is possible to make all of these channels completely identical and to provide them at a precisely prescribed distance.
  • Another possibility is to insert a film with creases into the outlet opening 21, the channels just described also being formed.
  • Measures can be taken to close part of the channels and thus adapt the working width of the device according to the requirements.
  • a slide can be inserted into the chamber 26.
  • This slide is designed in FIG. 4 as a tube 29 which has openings 30, so that an excess flowable medium can enter the interior of the tube 29 via these openings.
  • This tube is closed on one side and connected to a connection on the other side. This makes it possible to discharge excess, liquid medium on the device, which is particularly important at those points where the outlet channels are blocked. If the excess flowable medium were not removed, there is a risk of a very rapid build-up of pressure, which is noticeably noticeable at the open exit points and in other ways.
  • FIG. 6 shows different embodiments of the outlet edges of the outlet nozzle.
  • the rear boundary wall of the outlet opening 21 in the direction of movement of the web is at a certain distance from the web, whereas the other boundary wall is elongated, spherical and extends up to close to the surface of the web.
  • the hirier boundary wall of the outlet gap is provided with a lip 31 and in Fig. 8 an elastic lip 32 is attached to the rear boundary wall.
  • the invention is not restricted to the exemplary embodiments shown. So it is possible to provide the container for the flowable medium 7 outside the housing 1, the two toothed rollers do not necessarily have the same diameter. Depending on the desired output that is to be delivered by the two toothed rollers, the teeth of these rollers can be selected. A relatively coarse but also a very fine tooth pitch can be used in the device according to the invention.
  • the invention can be used in connection with stencils, both with flat stencils and with round stencils, and it can be used to treat supports and webs of any kind with any flowable media;
  • the device according to the invention can be used in textile printing, but also for applying colorations, for applying adhesives, impregnations, patterns and the like.
  • the device according to the invention can be used in any spatial position or in any application direction.

Abstract

1. Device for uniform application of free-flowing media, if appropriate via a template (22), to a carrier or a web of goods (23), the discharge channel (20) for the medium being preceded by a positive-displacement pump arrangement with toothed rolls (3, 4), characterised in that the positive-displacement pump arrangement has two toothed rolls (3, 4) floating in a housing (1), and in that the toothed rolls (3, 4) are movable up to contact with the internal wall.

Description

Die Erfindung betrifft eine Vorrichtung zum gleichmäßigen Auftragen von fließfähigen Medien, gegebenenfalls über eine Schablone, auf einen Träger bzw. auf eine Warenbahn, wobei dem Austrittskanal für das Medium eine Verdrängeipumpenanordnung vorgeschaltet ist.The invention relates to a device for the uniform application of flowable media, possibly via a template, to a carrier or to a web, the displacement channel for the medium being connected upstream of a displacement pump arrangement.

Bei Textildruckmaschinen,und hier insbesondere bei Schablonendruckmaschinen, bei Maschinen zum Aufbringen von Imprägnierungen, zum Einfärben, zum Auftragen eines Klebstoffes usw., stellt das Aufbringen von fließfähigen Medien auf einen Träger, insbesondere auf eine Warenbahn, ein besonderes Problem dar. Einerseits muß der Druck auf das aufzubringende Medium während des gesamten Arbeitsvorganges konstant gehalten werden, andererseits haben die Maschinen meist eine große Arbeitsbreite, bis zu 5 m und mehr, und man möchte mit möglichst hoher Arbeitsgeschwindigkeit die fließfähigen Medien aufbringen. D.h., man muß auch darauf achten, daß der Druck auf das Medium über die gesamte Arbeitsbreite gleich ist und daß stets die gewünschte Menge an fließfähigem Medium abgegeben wird.In textile printing machines, and here in particular in stencil printing machines, in machines for applying impregnation, for coloring, for applying an adhesive, etc., the application of flowable media to a carrier, in particular to a web, is a particular problem be kept constant on the medium to be applied during the entire working process, on the other hand the machines usually have a large working width, up to 5 m and more, and one wants to apply the flowable media at the highest possible working speed. This means that one must also ensure that the pressure on the medium is the same over the entire working width and that the desired amount of flowable medium is always released.

Bei Rakelanordnungen für Schablonendruckmaschinen, bei denen ein Rakelgehäuse eine spaltförmige Öffnung in Richtung zur Schabloneninnenseite bzw. zur Warenbahn hin aufweist, hat man bereits vorgeschlagen, die Farbe dem Inneren des Rakelgehäuses über eine Pumpe zuzuführen. Derartige Pumpen haben jedoch unvermeidliche Druckschwankungen, welche während des Druckvorganges Marken auf der Warenbahnoberfläche hinterlassen. Eine andere Möglichkeit, die Farbe der Rakel zuzuführen, ist die Verwendung eines hochgestellten Farbbehälters, wobei dann der Druck der Farbe in der Rakel von der Höhe des Flüssigkeitsspiegels im Hochbehälter abhängt. Hier treten durch die Strömung jedoch Verluste auf und die in der Rakel und den Zuleitungen verbleibenden Farbreste bei Beendigung des Druckvorganges oder beim Umrüsten sind ziemlich groß. Dies bedingt insbesondere bei kurzen Druckvorgängen beträchtliche Kosten.In squeegee arrangements for stencil printing machines, in which a squeegee housing has a gap-shaped opening in the direction of the inside of the stencil or towards the web, it has already been proposed to supply the ink to the inside of the squeegee housing by means of a pump. However, such pumps have unavoidable pressure fluctuations, which leave marks on the surface of the web during the printing process. Another possibility of supplying the ink to the squeegee is to use a raised ink container, in which case the pressure of the ink in the squeegee depends on the level of the liquid in the elevated container. Here, however, losses occur due to the flow and the ink residues remaining in the doctor blade and the feed lines when the printing process is ended or when changing over are quite large. This entails considerable costs, particularly for short printing processes.

14an hat auch bereits vorgeschlagen, in das Gehäuse der Rakel eine Verdrängerpumpenanordnung einzubauen.14an has already proposed to install a positive displacement pump arrangement in the housing of the doctor blade.

Aufgabe der vorliegenden Erfindung ist es; eine verbesserte Vorrichtung zum gleichmäßigen Auftragen von fließfähigen Medien zu finden.The object of the present invention is; to find an improved device for the uniform application of flowable media.

Erfindungsgemäß wird nun bei der eingangs genannten Vorrichtung vorgeschlagen, daß die Verdrängerpumpenanordnung zwei Zahnwalzen schwimmend in einem Gehäuse aufweist und daß die Zahnwalzen bis zur Berührung mit der Innenwand des Gehäuses beweglich sind.According to the invention it is now proposed in the device mentioned at the outset that the positive-displacement pump arrangement has two toothed rollers floating in a housing and that the toothed rollers are movable until they come into contact with the inner wall of the housing.

Durch die Erfindung ist es möglich, ein fließfähiges Medium vollkommen gleichmäßig über sehr große Arbeitsbreiten dem Austrittskanal für das Medium zuzuführen. Die Zahnwalzen können ganz nahe dem Austrittskanal angeordnet werden und die Farbreste bei Beendigung, z.B. eines Druckvorganges, sind relativ klein und fallen kaum ins Gewicht. Die Vorrichtung ist sehr einfach aufgebaut, sehr verläßlich und nicht störungsanfällig.The invention makes it possible to supply a flowable medium completely uniformly over very large working widths to the outlet channel for the medium. The toothed rollers can be arranged very close to the outlet channel and the ink residues, e.g. of a printing process, are relatively small and are hardly significant. The device is very simple, very reliable and not prone to failure.

Die Erfindung sei nun anhand der Zeichnungen beispielsweise beschrieben. Fig.1 zeigt die erfindungsgemäße Vorrichtung im Ruhezustand, Fig.2 zeigt die erfindungsgemäße Vorrichtung im Betrieb, Fig.3 ist eine Ausbildungsform des Austrittskanales ebenso Fig.4, Fig.5 zeigt ein Detail der Fig.4 in einem Schnitt entlang der Linie A-B, wobei jedoch nur ein Teil dargestellt ist, die Fig. 6 bis 8 zeigen verschiedene Ausführungsformen der Ablaufkanten der Austrittsdüse. Gemäß Fig.1 besteht die erfindungsgemäße Vorrichtung aus einem Gehäuse 1, indem sich eine Ausnehmung 2 befindet. In dieser Ausnehmung 2 sind zwei Zahnwalzen 3, 4 angeordnet. Diese Zahnwalzen 3, 4 stehen miteinander in Eingriff. Die beiden Zahnwalzen 3, 4 sind in der Ausnehmung 2 schwimmend oder fliegend angeordnet, d.h., sie können sich innerhalb des Gehäuses in radialer Richtung verschieben. Mindestens eine der Zahnwalzen 3 bzw. 4 ist an mindestens einem Ende mit axialem Spiel mit einem Antriebssystem (nicht dargestellt) verbunden. Im Ruhezustand liegen die beiden Zahnwalzen 3, 4, wie man der Fig.1 entnehmen kann, aufgrund ihrer Schwerkraft auf dem unteren Teil der Innenfläche der Ausnehmung 2 an den Punkten 5 und 6 auf.The invention will now be described, for example, with reference to the drawings. 1 shows the device according to the invention in the idle state, FIG. 2 shows the device according to the invention in operation, FIG. 3 is an embodiment of the outlet channel as well as FIG. 4, FIG. 5 shows a detail of FIG. 4 in a section along the line AB , but only a part is shown, FIGS. 6 to 8 show different embodiments of the trailing edges of the outlet nozzle. According to Figure 1, the device according to the invention consists of a housing 1 in which there is a recess 2. Two toothed rollers 3, 4 are arranged in this recess 2. These toothed rollers 3, 4 are in engagement with one another. The two toothed rollers 3, 4 are arranged floating or flying in the recess 2, ie they can move in the radial direction within the housing. At least one of the toothed rollers 3 and 4 is ver at least at one end with axial play with a drive system (not shown) bound. In the idle state, the two toothed rollers 3, 4, as can be seen in FIG. 1, lie on the lower part of the inner surface of the recess 2 at points 5 and 6 due to their gravity.

Wird die erfindungsgemäße Vorrichtung in Betrieb gesetzt,d.h., wird mindestens eine der Zahnwalzen 3 oder 4 angetrieben, und wird das Gehäuse mit dem fließfähigen Medium 7,z.B. einer Druckfarbe, gefüllt, so fördern die beiden Zahnwalzen 3, 4 bei einer Drehung in Richtung der Pfeile 8 das eingefüllte Medium in den Raum 9, der durch den unteren Teil 10 der Innenwand 2 und die beiden Zahnwalzen 3, 4 begrenzt wird. In diesem Raum 9 wird nun ein Druck aufgebaut. Dies ist durch den Punkt 11 und die Pfeile 12, 13 und 14 angedeutet. Die Kräfte in Richtung der Pfeile 12 und 13 wirken auf die Zahnwalzen 3 und 4 ein und verschieben diese, bis sie im oberen Bereich der Innenwand 2 an den Punkten 15 und 16 anliegen. Die Anpreßkräfte sind durch die Pfeile 17 und 18 symbolisiert.If the device according to the invention is put into operation, i.e. at least one of the toothed rollers 3 or 4 is driven, and the housing is filled with the flowable medium 7, e.g. a printing ink, the two toothed rollers 3, 4 convey the filled medium into the space 9, which is delimited by the lower part 10 of the inner wall 2 and the two toothed rollers 3, 4, upon rotation in the direction of the arrows 8. A pressure is now built up in this space 9. This is indicated by point 11 and arrows 12, 13 and 14. The forces in the direction of arrows 12 and 13 act on the toothed rollers 3 and 4 and shift them until they abut points 15 and 16 in the upper region of the inner wall 2. The contact forces are symbolized by arrows 17 and 18.

Der unterste Teil des Gehäuses 1 ist als Schlitzdüse 19 ausgebildet, der einen Austrittskanal 20 und eine Austrittsöffnung 21 aufweist. Der im Raum 9 sich aufbauende Druck wirkt auch in dem Austrittskanal 20; dies ist durch den Pfeil 14 symbolisiert und das sich im Austrittskanal 20 befindliche, fließfähige Medium wird vollkommen gleichmäßig durch die Austrittsöffnung 21 hinausgedrückt.The lowermost part of the housing 1 is designed as a slot nozzle 19 which has an outlet channel 20 and an outlet opening 21. The pressure building up in space 9 also acts in the outlet channel 20; this is symbolized by the arrow 14 and the flowable medium located in the outlet channel 20 is pressed out completely uniformly through the outlet opening 21.

Durch die schwimmend oder fliegend gelagerten Zahnwalzen wird das fließfähige Medium vollkommen gleichmäßig in den Druckraum befördert, so daß in diesem Raum ein konstanter Druck herrscht, der auf das austretende Medium über die gesamte Arbeitsbreite weitergegeben wird. Durch Veränderung der Drehgeschwindigkeit der beiden Zahnwalzen 3, 4 kann der Druck und somit die Menge des austretenden fließfähigen Mediums leicht eingestellt werden.Due to the floating or overhung toothed rollers, the flowable medium is conveyed completely evenly into the pressure chamber, so that there is a constant pressure in this room, which is passed on to the emerging medium over the entire working width. By changing the speed of rotation of the two toothed rollers 3, 4, the pressure and thus the amount of the flowing medium can be easily adjusted.

In den Fig. 1 und 2 ist angedeutet, daß das fließfähige Medium über eine Schablone 22 hindurch in eine Warenbahn 23 eingebracht wird, wobei die Warenbahn 23 über eine Gegendruckwalze 24 läuft. Es sei jedoch darauf hingewiesen, daß die Schablone auch weggelassen werden kann und daß das fließfähige Material-direkt auf eine Warenbahn oder aber auch auf einen anderen Träger, so z. B. eine Platte, einen Profilkörper oder dgl., aufgetragen werden kann. Es besteht auch die Möglichkeit, das Gehäuse 1 selbst verschieblich und gegebenenfalls auch höhenverstellbar vorzusehen. Dies ist durch den Doppelpfeil 25 symbolisiert.1 and 2 it is indicated that the flowable medium over a template 22 is introduced into a web 23, the web 23 running over a counter-pressure roller 24. However, it should be noted that the template can also be omitted and that the flowable material - directly on a web or on another carrier, such. B. a plate, a profile body or the like., Can be applied. There is also the possibility of providing the housing 1 itself displaceably and, if necessary, also height-adjustable. This is symbolized by the double arrow 25.

Von Bedeutung bei der vorliegenden Erfindung ist es, daß die Innenflächen des Gehäuses 1 jeweils einen Teil der Zahnwalzen 3, 4 mit Spiel umgeben. Es ist günstig, wenn diese umgebenden Innenflächen des Gehäuses kreiszylinderförmig vorgesehen sind und ihr Durchmesser nur geringfügig größer ist als der Durchmesser der jeweiligen Zahnwalze 3 bzw. 4.It is important in the present invention that the inner surfaces of the housing 1 each surround part of the toothed rollers 3, 4 with play. It is advantageous if these surrounding inner surfaces of the housing are provided in the shape of a circular cylinder and their diameter is only slightly larger than the diameter of the respective toothed roller 3 or 4.

Dann, wenn das fließfähige Medium durch einen Schaum gebildet wird, ist es günstig, den durch den Raum 9 und den Austrittskanal 20 gebildeten Druckraum in Kammern zu unterteilen, wie dies in den Fig. 3 und 4 dargestellt ist. Viele Schaumarten erfordern eine sehr schonende Behandlung, da sie sonst zusammenfallen, oder in ihrem Aufbau geändert werden und dann nicht mehr den Erfordernissen entsprechen. In den Fig. 3 und 4 ist der Austrittskanal 20 mit einer kreiszylinderförmigen Kammer 26 versehen. Durch diese Kammer 26 werden auch die minimalsten Druckunterschiede völlig ausgeglichen, so daß auch beim Austritt von Schaum in eine Warenbahn oder auf einen Träger keinerlei Probleme oder Unregelmäßigkeiten auftreten. Die in den Fig. 3 und 4 dargestellten Kammern 26 haben einen kreiszylinderförmigen Querschnitt. Es ist jedoch möglich, diesen Querschnitt auch anders auszubilden und es ist auch möglich, hintereinander mehrere, gegebenenfalls kleinere Kammern vorzusehen. Die Kammern 26 können von einem oder beiden Enden zugänglich sein, um eine Reinigungsvorrichtung einzubringen, die mittels Fortsätzen gleichzeitig auch die Verbindung zwischen der Kammer 26 und dem Raum 9 bzw. zwischen der Kammer 26 und dem Austritt zu reinigen.If the flowable medium is formed by a foam, it is advantageous to divide the pressure space formed by the space 9 and the outlet channel 20 into chambers, as is shown in FIGS. 3 and 4. Many types of foam require very gentle treatment, otherwise they will collapse or be changed in their structure and then no longer meet the requirements. 3 and 4, the outlet channel 20 is provided with a circular-cylindrical chamber 26. This chamber 26 also completely compensates for the smallest pressure differences, so that no problems or irregularities occur when foam emerges into a web or onto a carrier. The chambers 26 shown in FIGS. 3 and 4 have a circular cylindrical cross section. However, it is possible to design this cross-section differently and it is also possible to provide several, possibly smaller, chambers in succession. The chambers 26 can be accessible from one or both ends in order to introduce a cleaning device which at the same time also cleans the connection between the chamber 26 and the space 9 or between the chamber 26 and the outlet by means of extensions.

In manchen Fällen ist es günstig, die Austrittsöffnungen 21 noch speziell auszubilden, z.B. so wie dies in Fig.5 dargestellt ist. Hier ist eine der Seitenwände 27 oder aber beide mit Rillen 28 versehen, so daß in der Austrittsöffnung 21 eine Folge von einzelnen Kanälen mit ganz geringem Querschnitt gebildet ist. Durch das Anbringen der Rillen ist es möglich, alle diese Kanäle vollkommen gleich zu gestalten und in genau vorgeschriebenem Abstand vorzusehen. Eine andere Möglichkeit besteht darin, in die Austrittsöffnung 21 eine Folie mit Rillungen einzulegen, wobei ebenfalls die soeben beschriebenen Kanäle gebildet werden.In some cases it is expedient to make the outlet openings 21 special, e.g. as shown in Fig.5. Here, one of the side walls 27 or both is provided with grooves 28, so that a sequence of individual channels with a very small cross section is formed in the outlet opening 21. By attaching the grooves, it is possible to make all of these channels completely identical and to provide them at a precisely prescribed distance. Another possibility is to insert a film with creases into the outlet opening 21, the channels just described also being formed.

Es können Maßnahmen getroffen werden,um einen Teil der Kanäle zu verschließen und so die Arbeitsbreite der Vorrichtung entsprechend den Forderungen anzupassen. Zum Verschließen der Kanäle kann man, wie dies in Fig.4 dargestellt ist, in die Kammer 26 einen Schieber einsetzen. Dieser Schieber ist in Fig.4 als Rohr 29 ausgebildet, das Öffnungen 30 besitzt, so daß ein überschüssiges fließfähiges Medium über diese Öffnungen in den Innenraum des Rohres 29 eintreten kann. Dieses Rohr ist an einer Seite verschlossen und auf der anderen Seite mit einem Anschluß verbunden. Dadurch ist es möglich, überschüssiges, flüssiges Medium auf der Vorrichtung abzuführen, was insbesondere an jenen Stellen von großer Wichtigkeit ist, an denen die Austrittskanäle gesperrt sind. Würde man das überschüssige fließfähige Medium nicht abführen, so besteht die Gefahr eines sehr raschen Druckaufbaues, der sich an den offenen Austrittsstellen und auch auf andere Weise unangenehm bemerkbar macht.Measures can be taken to close part of the channels and thus adapt the working width of the device according to the requirements. To close the channels, as shown in FIG. 4, a slide can be inserted into the chamber 26. This slide is designed in FIG. 4 as a tube 29 which has openings 30, so that an excess flowable medium can enter the interior of the tube 29 via these openings. This tube is closed on one side and connected to a connection on the other side. This makes it possible to discharge excess, liquid medium on the device, which is particularly important at those points where the outlet channels are blocked. If the excess flowable medium were not removed, there is a risk of a very rapid build-up of pressure, which is noticeably noticeable at the open exit points and in other ways.

Die Fig. 6, 7 und 8 zeigen verschiedene Ausführungsformen der Ablaufkanten der Austrittsdüse. Gemäß Fig.6 ist die in Bewegungsrichtung der Warenbahn hintere Begrenzungswand der Austrittsöffnung 21 in einem bestimmten Abstand zur Warenbahn, wohingegen die andere Begrenzungswand verlängert ist, ballig ausgeführt ist und bis nahe zur Oberfläche der Warenbahn reicht. Bei Fig. 7 ist die hiriere Begrenzungswand des Austrittsspaltes mit einer Lippe 31 versehen und bei Fig. 8 ist eine elastische Lippe 32 an der hinteren Begrenzungswand befestigt. Mit Hilfe der Ausführungsformen gemäß Fig.6 kann man insbesondere eine Oberflächenschicht auftragen.6, 7 and 8 show different embodiments of the outlet edges of the outlet nozzle. According to FIG. 6, the rear boundary wall of the outlet opening 21 in the direction of movement of the web is at a certain distance from the web, whereas the other boundary wall is elongated, spherical and extends up to close to the surface of the web. In Fig. 7 the hirier boundary wall of the outlet gap is provided with a lip 31 and in Fig. 8 an elastic lip 32 is attached to the rear boundary wall. With the help of the embodiments according to FIG. 6, one can in particular apply a surface layer.

Die Erfindung ist auf die dargestellten Ausführungsbeispiele nicht beschränkt. So ist es möglich, den Behälter für das fließfähige Medium 7 auch außerhalb des Gehäuses 1 vorzusehen, die beiden Zahnwalzen müssen nicht unbedingt gleichen Durchmesser haben. Je nach der gewünschten Leistung, die durch die beiden Zahnwalzen abgegeben werden soll, kann man die Zahnungen dieser Walzen wählen. Es läßt sich eine verhältnismäßig grobe aber auch eine sehr feine Zahnteilung bei der erfindungsgemäßen Vorrichtung einsetzen. Wie bereits erwähnt, kann die Erfindung in Zusammenhang mit Schablonen, sowohl mit Flachschablonen als auch mit Rundschablonen, verwendet werden, und es lassen sich damit Träger und Warenbahnen jeglicher Art mit beliebigen, fließfähigen Medien behandeln; insbesondere kann die erfindungsgemäße Vorrichtung beim Textildruck eingesetzt werden, aber auch zum Aufbringen von Einfärbungen, zum Aufbringen von Klebstoffen, Imprägnierungen, Mustern und dgl.The invention is not restricted to the exemplary embodiments shown. So it is possible to provide the container for the flowable medium 7 outside the housing 1, the two toothed rollers do not necessarily have the same diameter. Depending on the desired output that is to be delivered by the two toothed rollers, the teeth of these rollers can be selected. A relatively coarse but also a very fine tooth pitch can be used in the device according to the invention. As already mentioned, the invention can be used in connection with stencils, both with flat stencils and with round stencils, and it can be used to treat supports and webs of any kind with any flowable media; In particular, the device according to the invention can be used in textile printing, but also for applying colorations, for applying adhesives, impregnations, patterns and the like.

Die erfindungsgemäße Vorrichtung kann in jeder räumlichen Lage bzw. in jeder Auftragsrichtung eingesetzt werden. Insbesondere bei einer Auftragung von unten nach oben ist es häufig günstig, das Prinzip der kommunizierenden Gefäße anzuwenden, wobei durch Verstellung eines außerhalb der Vorrichtung befindlichen Gefäßes das aufzutragende Medium gegen die Zahnwalzen 3 gedrückt wird.The device according to the invention can be used in any spatial position or in any application direction. In particular when applying from bottom to top, it is often advantageous to apply the principle of the communicating vessels, the medium to be applied being pressed against the toothed rollers 3 by adjusting a vessel located outside the device.

Claims (12)

1. Vorrichtung zum gleichmäßigen Auftragen von fließfähigen Medien, gegebenenfalls über eine Schablone, auf einen Träger bzw. auf eine Warenbahn, wobei dem Austrittskanal für das Medium eine Verdrängerpumpenanordnung vorgeschaltet ist, dadurch gekennzeichnet, daß die Verdrängerpumpenanordnung zwei Zahnwalzen schwimmend in einem Gehäuse aufweist und daß die Zahnwalzen bis zur Berührung mit der Innenwand beweglich sind.1.Device for the uniform application of flowable media, optionally via a template, to a carrier or to a web, the outlet channel for the medium being connected upstream of a positive displacement pump arrangement, characterized in that the positive displacement pump arrangement has two toothed rollers floating in a housing and in that the toothed rollers are movable until they come into contact with the inner wall. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Innenflächen des Gehäuses jeweils einen Teil je einer der Zahnwalzen mit Spiel umgeben.2. Device according to claim 1, characterized in that the inner surfaces of the housing each surround a part of one of the toothed rollers with play. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jede Ausnehmung des Gehäuses, die eine Zahnwalze übergreift, kreiszylinderförmig ist und einen Durchmesser hat, der geringfügig größer ist als der Durchmesser der Zahnwalze.3. Apparatus according to claim 1 or 2, characterized in that each recess of the housing which engages over a toothed roller is circular cylindrical and has a diameter which is slightly larger than the diameter of the toothed roller. 4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens eine Zalmwelle an mindestens einem Ende mit axialem Spiel mit einem Antriebssystem verbunden ist.4. Device according to one of the preceding claims, characterized in that at least one Zalmwelle is connected to at least one end with axial play with a drive system. 5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Gehäuse so ausgebildet ist, daß zwischen den beiden Zahnwalzen und einem Teil jeder der diese umgebenden Innenflächen ein Druckraum geformt ist.5. Device according to one of the preceding claims, characterized in that the housing is designed such that a pressure space is formed between the two toothed rollers and a part of each of the inner surfaces surrounding them. 6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Gehäuse auf der Druckseite der Zahnwalzen als Düse ausgebildet ist.6. Device according to one of the preceding claims, characterized in that the housing is designed as a nozzle on the pressure side of the toothed rollers. 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der zwischen den Zahnwalzen und dem Gehäuse bzw. der Düse gebildete Druckraum in Kammern unterteilt ist.7. Device according to one of the preceding claims, characterized in that the pressure space formed between the toothed rollers and the housing or the nozzle is divided into chambers. 8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kammern von den Enden aus zugänglich sind, um eine Reinigungsvorrichtung einzubringen.8. Device according to one of the preceding claims, characterized in that the chambers are accessible from the ends to introduce a cleaning device. 9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Düse als Längsschlitz ausgebildet ist, der sich vorzugsweise über die gesamte Arbeitsbreite erstreckt.9. Device according to one of the preceding claims, characterized in that the nozzle is designed as a longitudinal slot which preferably extends over the entire working width. 10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß mindestens eine der beiden Seitenwände der Längsschlitze gerillt ist.10. The device according to claim 9, characterized in that at least one of the two side walls of the longitudinal slots is grooved. 11. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in eine Kammer zum Verschließen eines Teiles der Austrittsöffnungen eine Stange verschiebbar eingesetzt ist.11. Device according to one of the preceding claims, characterized in that a rod is slidably inserted into a chamber for closing a part of the outlet openings. 12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Stange als Rohr ausgebildet ist, dessen eines Ende verschlossen und dessen anderes Ende über einen Anschluß nach außen geführt ist,wobei in dem Rohr Öffnungen zum Eintritt von fließfähigen Medium vorgesehen sind, das aus der Vorrichtung abgeführt werden kann.12. The apparatus according to claim 11, characterized in that the rod is designed as a tube, one end of which is closed and the other end of which is guided to the outside via a connection, openings being provided in the tube for the entry of flowable medium which flows from the Device can be removed.
EP19830109170 1982-10-07 1983-09-16 Coating apparatus Expired EP0108887B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT371782A AT376175B (en) 1982-10-07 1982-10-07 DEVICE FOR THE EVEN APPLICATION OF FLOWABLE MEDIA
AT3717/82 1982-10-07

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EP0108887A2 true EP0108887A2 (en) 1984-05-23
EP0108887A3 EP0108887A3 (en) 1985-10-09
EP0108887B1 EP0108887B1 (en) 1988-03-23

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EP (1) EP0108887B1 (en)
JP (1) JPS59171654A (en)
AT (1) AT376175B (en)
DE (1) DE3376077D1 (en)

Cited By (6)

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FR2582689A1 (en) * 1985-05-31 1986-12-05 Gerber Scient Inc Marking device
FR2586591A1 (en) * 1985-08-27 1987-03-06 Armstrong World Ind Inc HOMOGENIZATION APPARATUS, CURABLE COATING APPARATUS COMPRISING THE SAME, AND METHOD FOR USING THE COATING APPARATUS.
WO1987003020A1 (en) * 1985-11-18 1987-05-21 Johannes Zimmer Process and device for widely-spread feeding or application of flowable substances
EP0713935A1 (en) * 1994-11-24 1996-05-29 Fleissner GmbH & Co. Maschinenfabrik Device for evenly applying a minimal quantity of a treating fluid to a textile web
EP1334821B1 (en) * 2002-01-22 2006-11-22 Thermopal GmbH Process and apparatus for impregnating thin layers with curable liquids
CN108906495A (en) * 2018-09-11 2018-11-30 程春兰 A kind of thermoplastic plate drum-type glue spreader

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
JPS6371350A (en) * 1986-09-12 1988-03-31 Matsushita Electric Ind Co Ltd Rotary screen printing method
JPS6371349A (en) * 1986-09-12 1988-03-31 Matsushita Electric Ind Co Ltd Rotary screen printing method
JPS63111055A (en) * 1986-10-29 1988-05-16 Matsushita Electric Ind Co Ltd Rotary screen printing machine
WO1991016998A1 (en) * 1990-04-27 1991-11-14 Hitachi Maxell, Ltd. Method and device for applying liquid
DE29622341U1 (en) * 1996-12-23 1997-04-03 Nordson Corp Device for applying flowable material to a substrate, in particular for the intermittent application of liquid adhesive
JP6790373B2 (en) * 2016-02-05 2020-11-25 富士電機株式会社 Printing equipment, printing tools and printing methods
CN107931031B (en) * 2017-12-15 2019-12-03 李秀云 A kind of cabinet body colored paint is flat to apply device and its japanning flow control system

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US2753794A (en) * 1951-06-15 1956-07-10 Chambon Ltd Squeegees for screen and stencil printing
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WO1980002399A1 (en) * 1979-04-27 1980-11-13 Zimmer J Klagenfurter Maschine Scraper device
DE2929699A1 (en) * 1979-07-21 1981-01-22 Mathias Mitter Screw-printing machine liq. media application equipment - has rollers moving clear each other and driven at variable speed

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US2474254A (en) * 1946-11-18 1949-06-28 Leroy A Kauffman Machine for impregnating material with liquids
US2753794A (en) * 1951-06-15 1956-07-10 Chambon Ltd Squeegees for screen and stencil printing
US3071069A (en) * 1961-03-14 1963-01-01 Dry Screen Process Inc Screen printing apparatus
DE2259225A1 (en) * 1971-12-06 1973-06-20 Peter Zimmer Colouring,printing esp pile fabrics - in screen printing
WO1980002399A1 (en) * 1979-04-27 1980-11-13 Zimmer J Klagenfurter Maschine Scraper device
DE2929699A1 (en) * 1979-07-21 1981-01-22 Mathias Mitter Screw-printing machine liq. media application equipment - has rollers moving clear each other and driven at variable speed

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582689A1 (en) * 1985-05-31 1986-12-05 Gerber Scient Inc Marking device
FR2586591A1 (en) * 1985-08-27 1987-03-06 Armstrong World Ind Inc HOMOGENIZATION APPARATUS, CURABLE COATING APPARATUS COMPRISING THE SAME, AND METHOD FOR USING THE COATING APPARATUS.
WO1987003020A1 (en) * 1985-11-18 1987-05-21 Johannes Zimmer Process and device for widely-spread feeding or application of flowable substances
EP0713935A1 (en) * 1994-11-24 1996-05-29 Fleissner GmbH & Co. Maschinenfabrik Device for evenly applying a minimal quantity of a treating fluid to a textile web
EP1334821B1 (en) * 2002-01-22 2006-11-22 Thermopal GmbH Process and apparatus for impregnating thin layers with curable liquids
CN108906495A (en) * 2018-09-11 2018-11-30 程春兰 A kind of thermoplastic plate drum-type glue spreader

Also Published As

Publication number Publication date
AT376175B (en) 1984-10-25
ATA371782A (en) 1984-03-15
DE3376077D1 (en) 1988-04-28
EP0108887A3 (en) 1985-10-09
JPS59171654A (en) 1984-09-28
JPH0226862B2 (en) 1990-06-13
EP0108887B1 (en) 1988-03-23

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