EP0434617A1 - Supplying device for liquid, pasty or cold state solid materials, particularly hot-melt adhesives - Google Patents

Supplying device for liquid, pasty or cold state solid materials, particularly hot-melt adhesives Download PDF

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Publication number
EP0434617A1
EP0434617A1 EP90810971A EP90810971A EP0434617A1 EP 0434617 A1 EP0434617 A1 EP 0434617A1 EP 90810971 A EP90810971 A EP 90810971A EP 90810971 A EP90810971 A EP 90810971A EP 0434617 A1 EP0434617 A1 EP 0434617A1
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EP
European Patent Office
Prior art keywords
conveyor system
housing
dispensing
application head
bag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90810971A
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German (de)
French (fr)
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EP0434617B1 (en
EP0434617B2 (en
Inventor
Hans Koller
Kurt Meyer
Felix Bleuel
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BALTI AG
Original Assignee
BALTI AG
Ciba Geigy AG
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Application filed by BALTI AG, Ciba Geigy AG filed Critical BALTI AG
Priority to AT90810971T priority Critical patent/ATE99567T1/en
Publication of EP0434617A1 publication Critical patent/EP0434617A1/en
Publication of EP0434617B1 publication Critical patent/EP0434617B1/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
    • 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
    • B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
    • 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
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00523—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material
    • B05C17/00526—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application
    • B05C17/0053—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical
    • B05C17/00533—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical comprising a piston

Definitions

  • the invention relates to a conveyor system for viscous, pasty or solid in the cold state, in particular for hot-melt adhesives, according to the preamble of claim 1.
  • viscous, pasty or solid masses are processed.
  • sheet metal processing industry in particular in the automotive industry, there is an ever increasing trend towards bonding sheet metal parts.
  • a major problem with these working techniques is the conveyance of the viscous, pasty or, in many cases, solid masses, especially hot-melt adhesives.
  • the mass, together with the delivery container usually a sheet metal container, is arranged in a cylindrical steel tube.
  • the lid of the sheet metal container is removed and the pressure plate of a piston pump is inserted into the container from above.
  • the wall of the steel tube can be heated. This liquefies the usually solid adhesive.
  • a conveyor device for smaller amounts of viscous, pasty or solid materials in the cold state is also known.
  • This device is designed in particular for the application of hot-melt adhesives.
  • the adhesive which is solid when cold, is located in a piston cartridge.
  • Piston cartridges of this type have a displaceable piston-like base and an outlet opening on the side opposite the base.
  • the filled piston cartridge is introduced into an approximately cylindrical container of this cartridge press, so that the outlet opening is connected to an application syringe adapted to the respective purpose.
  • the wall of the cylindrical container can be heated over its circumference and over its entire length in order to liquefy the contents of the piston cartridge. Only in the liquid state is it possible to apply adhesive to the application syringe by applying pressure to the bottom of the cartridge.
  • the conveyor system should do without additional pumping equipment.
  • the masses should be stored within a low-cost container that can be completely emptied without degradation or deterioration of the mass properties.
  • the emptied container should only represent a small volume of waste.
  • the conveyor system 1 according to the invention shown for example in FIGS. 1 and 2 comprises an essentially tubular housing 2.
  • One side of the tubular housing 2 is detachably connected to a dispensing and / or application head 5.
  • the opposite end is open and designed to receive a piston 14 seated on a piston rod 15.
  • This piston can be displaced in the housing 2 by means of pneumatic, hydraulic or electrical means 16.
  • the piston 14 could also be designed to be manually displaceable.
  • the piston 14, as shown in FIG. 1 is arranged entirely within the housing 2 even in the fully retracted state. This and a sufficient dimensioning of the length of the piston 14 ensures safe operation without tilting the piston 14.
  • the housing 2 is arranged upright, with the dispensing and / or application head 5 at an upper end and the piston 14 at its lower end.
  • this arrangement could also be interchanged, or the housing 2 could be in a lying position.
  • the tubular housing 2 is designed to accommodate a viscous, pasty or solid M which is assigned within a compressible bag 19.
  • the filled bag 19 has an approximately cylindrical shape with a diameter d that is slightly smaller than the inner diameter i of the tubular housing 2.
  • the outside 20 of the bag 19 has a surface that is as smooth as possible, preferably it is metallized. Together with the same if possible smooth surface of the housing inner wall 3, which is preferably polished, the bag 19 and the inner wall 3 of the compressive force of the piston 14 oppose the lowest possible frictional force.
  • the wall thickness b of the bag 19 is selected to be approximately 0.1 mm to approximately 1 mm, preferably approximately 0.3 mm.
  • the means 11 for heating the housing wall 4 are essentially arranged only in the area of the dispensing and / or application head 5.
  • the heating means 11 are preferably arranged in the dispensing and / or application head 5. This heating means 11 liquefies the part of the mass located in the front region of the bag 19, which protrudes into an approximately conical recess 6 in the side 7 of the dispensing and / or application head 5 facing the interior of the housing.
  • the conical recess 6 extends approximately from the housing inner wall 3 to a preferably centrally arranged dispensing opening 8 in the dispensing and / or application head 5.
  • the dispensing opening 8 is located above a channel 9 with a preferably on the lateral outer wall of the dispensing and / or application head 5 provided hose connection 10 in connection.
  • the pressure of the piston 14 pushes the bag 19 with the mass M in the direction of the dispensing and / or application head 5.
  • the liquefied part of the mass M is pressed out of the bag 19 by predetermined breaking points formed as slits 22 in the side 21 of the bag 19 facing the head 5 and via the dispensing opening 8 and the channel 9 and a hose 17 connected to the hose connection 10 to form an application gun 18 headed.
  • the hose 17 is preferably heatable.
  • the slots 22 preferably extend in a star shape from the bag center.
  • FIG. 2 shows the situation with a bag 19 that has already been partially emptied and compressed. Upon further pressing, the bag 19 is compressed to a very small volume.
  • the heating means 11 preferably comprise electrically operable and controllable heating cartridges. These are arranged approximately in a star shape around the central delivery opening 8.
  • the dispensing and / or application head 5 also has a radial bore 12 for a temperature sensor 13. This temperature sensor 13 detects the desired working temperature and is fed back via the heating means 11, so that the temperature can be regulated as precisely as possible.
  • the dispensing and / or application head 5 is detachably connected to the housing 2.
  • the housing 2 is therefore preferably made of steel with a wall thickness z of approximately 1 mm to approximately 20 mm.
  • the head 5 is also preferably made of steel, its inside 7 preferably coated with polytetrafluoroethylene (PTFE)
  • the compressible bag 19 with the mass M is arranged inside a protective tube 23.
  • the inner diameter m of the protective tube 23 is slightly smaller than the inner diameter i of the tubular housing 2.
  • the wall thickness of the protective tube 23 is dimensioned such that the protective tube 23 sufficiently counteracts a deformation of the filled bag 19. In this way it is ensured that the bag 19 maintains its shape during storage and transportation and is always easy to insert into the tubular housing 2.
  • the conveyor system according to the invention in particular for hot-melt adhesive, can be produced both as a larger stand system for containers with a mass of up to 50 kg and more, and also as a small conveyor system for small amounts of adhesive in the form of a cartridge press for cartridges with a content of about 1 kg.
  • the conveyor system can also be integrated directly into the application gun. No complex pumps are required. Due to the fact that only a small part of the mass has to be liquefied, no degradation or deterioration of the adhesive properties occurs and the contents of the bag are fully used. There are hardly any pollution problems and the volume of waste is greatly reduced. In addition, the container is simple and cheap to manufacture.

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  • Coating Apparatus (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

A supplying device for viscous or pasty materials or materials which are solid in the cold state, particularly hot-melt adhesives, comprises an essentially tubular housing (2) for the material (M). One side of the housing (2) is detachably connected to a discharge and/or application head (5), the other side is constructed to receive a displaceable piston (14). The material (M) to be supplied is located within a compressible bag (19). In the region of the discharge and/or application head (5) there are means (11) arranged for heating the housing wall (4). <IMAGE>

Description

Die Erfindung betrifft eine Förderanlage für zähflüssige, pastöse oder im kalten Zustand feste Massen, insbesondere für heissschmelzende Kleber, gemäss Oberbegriff des Patentanspruchs 1.The invention relates to a conveyor system for viscous, pasty or solid in the cold state, in particular for hot-melt adhesives, according to the preamble of claim 1.

In vielen Industriezweigen werden zähflüssige, pastöse oder im kaltem Zustand feste Massen verarbeitet. So findet sich in der Blech-verarbeitenden Industrie, insbesondere in der Automobilindustrie ein immer grösser werdender Trend zum Verkleben von Blechteilen. Ein wesentliches Problem bei diesen Arbeitstechniken stellt die Förderung der zähflüssigen, pastösen oder vielfach im kalten Zustand festen Massen, insbesondere von heissschmelzenden Klebern dar. Bei einem der bislang bekannten Geräte wird die Masse samt dem Anlieferbehälter, üblicherweise ein Blechcontainer, in einer zylindrischen Stahlröhre angeordnet. Der Deckel des Blechcontainers wird entfernt und von oben die Druckplatte einer Kolbenschöpfpumpe in den Container eingefähren. Die Wandung der Stahlröhre ist beheizbar. Dadurch wird die üblicherweise feste Klebermasse verflüssigt. Mit Hilfe der Druckplatte wird pneumatisch oder hydraulisch auf die Oberfläche der verflüssigten Klebermasse Druck ausgeübt und zugleich flüssiger, heisser Kleber durch eine zentrale Bohrung in der Druckplatte über beheizbare Leitungen abgepumpt und zu einer Applikationsvorrichtung weitergeleitet. Bei diesem bekannten Gerät stellt sich immer das Problem, dass der gesamte Masseninhalt des Containers verflüssigt werden muss um ein Abpumpen des Klebers zu ermöglichen. Vielfach wird aber nur ein Teil des Containerinhalts in einem Arbeitsgang verbraucht und der verbleibende Rest verfestigt sich wieder beim Abkühlen. Bei einem neuerlichen Gebrauch muss die Masse wieder verflüssigt werden uns so fort. Dieses ständige Erwärmen und Abkühlen wirkt sich jedoch sehr schlecht auf die Eigenschaften des Klebers aus. Deshalb werden oftmals auch schon nur teilweise verbrauchte Massencontainer zum Abfall gegeben. Auch ist die Dichtigkeit zwischen der Druckplatte der Kolbenschöpfpumpe und der Containerwandung oft nicht besonders gut, so dass es immer wieder zu Verschmutzungen der Druckplattenoberseite, bzw. oft sogar der Stahlröhre kommt, welche nur schwer beseitigt werden können. Eine stabilere Ausbildung des Containers erhöht die Kosten und ist überdies nicht zweckmässig, da der entleerte Massencontainer üblicherweise als Abfallprodukt behandelt wird. Diese bekannte Vorrichtung ist äusserst komplex im Aufbau, insbesondere müssen die Abpumpleitungen und die Pumpe selbst ständig beheizt werden, um ein Verfestigen des Klebens zu verhindern.In many branches of industry, viscous, pasty or solid masses are processed. In the sheet metal processing industry, in particular in the automotive industry, there is an ever increasing trend towards bonding sheet metal parts. A major problem with these working techniques is the conveyance of the viscous, pasty or, in many cases, solid masses, especially hot-melt adhesives. In one of the devices known to date, the mass, together with the delivery container, usually a sheet metal container, is arranged in a cylindrical steel tube. The lid of the sheet metal container is removed and the pressure plate of a piston pump is inserted into the container from above. The wall of the steel tube can be heated. This liquefies the usually solid adhesive. With the help of the pressure plate, pressure is exerted pneumatically or hydraulically on the surface of the liquefied adhesive mass and, at the same time, liquid, hot adhesive is pumped out through a central hole in the pressure plate via heatable lines and passed on to an application device. The problem with this known device is that the entire mass content of the container must be liquefied in order to allow the adhesive to be pumped out. In many cases, however, only a part of the container content is consumed in one operation and the rest remains solidified when cooling. With a new use the mass must be liquefied again and so on. This constant heating and cooling has a very bad effect on the properties of the adhesive. For this reason, bulk containers that are only partially used are often given to waste. The tightness between the pressure plate of the piston pump and the container wall is often not particularly good, so that the top of the pressure plate, or often even the steel tube, is repeatedly soiled, which can only be removed with difficulty. A more stable design of the container increases the costs and is also not practical, because the emptied bulk container is usually treated as a waste product. This known device is extremely complex in construction, in particular the pumping lines and the pump itself have to be constantly heated in order to prevent the adhesive from solidifying.

Es ist auch eine Fördervorrichtung für kleinere Mengen zähflüssiger, pastöser oder im kalten Zustand fester Massen bekannt. Diese Vorrichtung ist insbesondere für die Applikation von heissschmelzenden Klebern ausgebildet. Der im kalten Zustand feste Kleber befindet sich in einer Kolbenkartusche. Derartige Kolbenkartuschen weisen einen verschiebbaren kolbenartigen Boden und eine Auslassöffnung auf der dem Boden gegenüberliegenden Seite auf. Zum Auspressen wird die gefüllte Kolbenkartusche in ein etwa zylindrisches Behältnis dieser Kartuschenpresse eingebracht, so dass die Auslassöffnung mit einer dem jeweiligen Zweck angepassten Applikationsspritze in Verbindung steht. Die Wandung des zylindrischen Behältnisses ist über seinen Umfang und seine gesamte Länge beheizbar, um den Inhalt der Kolbenkartusche zu verflüssigen. Nur im flüssigen Zustand ist es möglich durch Druck auf den Kartuschenboden Kleber zur Applikationsspritze zu befördern. In festem Zustand haftet die Masse zu stark an der Kartuschenwandung. Derartige Kartuschenpressen werden immer dann eingesetzt, wenn nur kleine Klebstoffmengen appliziert werden müssen. So kommt es vielfach vor, dass trotz der relativ kleinen Vorratsmengen innerhalb der Kolbenkartusche nicht die gesamte Masse verbraucht wird. Auch in diesem Fall zeigt sich bei häufigerem Aufheizen und Abkühlen eine Degradation des Klebers, somit eine deutliche Verschlechtung seiner Eigenschaften. Deshalb werden vielfach nicht vollständig entleerte Kolbenkartuschen zum Abfall gegeben. Ueberdies ist die Herstellung derartiger Kolbenkartuschen aufwendig und für einen Wegwerf-Artikel relativ teuer.A conveyor device for smaller amounts of viscous, pasty or solid materials in the cold state is also known. This device is designed in particular for the application of hot-melt adhesives. The adhesive, which is solid when cold, is located in a piston cartridge. Piston cartridges of this type have a displaceable piston-like base and an outlet opening on the side opposite the base. For pressing out, the filled piston cartridge is introduced into an approximately cylindrical container of this cartridge press, so that the outlet opening is connected to an application syringe adapted to the respective purpose. The wall of the cylindrical container can be heated over its circumference and over its entire length in order to liquefy the contents of the piston cartridge. Only in the liquid state is it possible to apply adhesive to the application syringe by applying pressure to the bottom of the cartridge. In the solid state, the mass adheres too strongly to the cartridge wall. Cartridge presses of this type are always used when only small amounts of adhesive have to be applied. It often happens that, despite the relatively small supply quantities within the piston cartridge, the entire mass is not consumed. In this case too, there is a degradation of the adhesive with frequent heating and cooling, thus a significant deterioration in its properties. For this reason, piston cartridges that are often not completely empty are given to waste. In addition, the manufacture of such piston cartridges is complex and relatively expensive for a disposable article.

Es besteht daher die Aufgabe eine Förderanlage für zähflüssige, pastöse oder im kalten Zustand feste Massen zu schaffen, welche die vorstehend genannten Nachteile nicht aufweist. Die Förderanlage soll ohne zusätzliche Pumpeinrichtungen auskommen. Die Massen sollen innerhalb eines billig zu produzierenden Gebindes gelagert sein, welches ohne Degradation bzw. Verschlechterung der Masseneigenschaften vollständig entleert werden kann. Auch soll das entleerte Gebinde schliesslich nur ein kleines Abfallvolumen darstellen.It is therefore the task of creating a conveyor system for viscous, pasty or solid masses when cold, which does not have the disadvantages mentioned above. The conveyor system should do without additional pumping equipment. The masses should be stored within a low-cost container that can be completely emptied without degradation or deterioration of the mass properties. Finally, the emptied container should only represent a small volume of waste.

Die Lösung dieser und weiterer Aufgaben erfolgt durch eine Förderanlage für zähflüssige, pastöse oder im kalten Zustand feste Massen gemäss Kennzeichen des Patentanspruchs 1.These and other tasks are solved by a conveyor system for viscous, pasty or solid materials in the cold state according to the characterizing part of patent claim 1.

Weiterbildungen und besonders bevorzugte Ausbildungsvarianten sind Gegenstand der abhängigen Patentansprüche.Further developments and particularly preferred training variants are the subject of the dependent claims.

Im folgenden wird die Erfindung anhand der Zeichnungen näher erläutert. Es zeigen in schematischen Darstellung:

  • Fig. 1 eine Förderanlage mit einem gefüllten Massenbeutel im teilweisen Längsschnitt,
  • Fig. 2 eine Förderanlage mit teilweise entleertem Massenbeutel im teilweisen Längsschnitt,
  • Fig. 3 ein Schnitt durch einen Abgabe- und/oder Applikationskopf gemäss Schnittlinie III-III in Fig. 1 und
  • Fig. 4 ein Gebinde zum Einsatz in der Förderanlage.
The invention is explained in more detail below with reference to the drawings. In a schematic representation:
  • 1 is a conveyor system with a filled bulk bag in partial longitudinal section,
  • 2 shows a conveyor system with partially emptied bulk bag in partial longitudinal section,
  • Fig. 3 shows a section through a dispensing and / or application head according to section line III-III in Fig. 1 and
  • Fig. 4 is a container for use in the conveyor system.

Die in den Fig. 1 und 2 beispielsweise dargestellte erfindungsgemässe Förderanlage 1 umfasst ein im wesentlichen röhrenförmiges Gehäuse 2. Eine Seite des röhrenförmigen Gehäuses 2 ist mit einem Abgabe- und/oder Applikationskopf 5 lösbar verbunden. Das gegenüberliegende Ende ist offen und zur Aufnahme eines auf einer Kolbenstange 15 sitzenden Kolbens 14 ausgebildet. Dieser Kolben ist über pneumatische, hydraulische oder elektrische Mittel 16 im Gehäuse 2 verschiebbar. Selbstverständlich könnte der Kolben 14 auch manuell verschiebbar ausgebildet sein. Vorzugsweise ist der Kolben 14, so wie in Fig. 1 dargestellt, auch im vollständig zurückgezogenen Zustand zur Gänze innerhalb des Gehäuses 2 angeordnet. Dies und eine ausreichende Dimensionierung der Länge des Kolbens 14 gewährleistet einen sicheren Betrieb ohne Verkanten des Kolbens 14.The conveyor system 1 according to the invention shown for example in FIGS. 1 and 2 comprises an essentially tubular housing 2. One side of the tubular housing 2 is detachably connected to a dispensing and / or application head 5. The opposite end is open and designed to receive a piston 14 seated on a piston rod 15. This piston can be displaced in the housing 2 by means of pneumatic, hydraulic or electrical means 16. Of course, the piston 14 could also be designed to be manually displaceable. Preferably, the piston 14, as shown in FIG. 1, is arranged entirely within the housing 2 even in the fully retracted state. This and a sufficient dimensioning of the length of the piston 14 ensures safe operation without tilting the piston 14.

Gemäss der Darstellung ist das Gehäuse 2 stehend angeordnet, mit dem Abgabe- und/oder Applikationskopf 5 an einem oberen Ende und dem Kolben 14 an seinem unteren Ende. Selbstverständlich könnte diese Anordnung auch vertauscht sein, oder das Gehäuse 2 in liegender Stellung vorliegen.According to the illustration, the housing 2 is arranged upright, with the dispensing and / or application head 5 at an upper end and the piston 14 at its lower end. Of course, this arrangement could also be interchanged, or the housing 2 could be in a lying position.

Das röhrenförmige Gehäuse 2 ist zur Aufnahme einer innerhalb eines komprimierbaren Beutels 19 zugeordneten zähflüssigen, pastösen oder im kalten Zustand festen Masse M ausgebildet. Der gefüllte Beutel 19 weist eine etwa zylindrische Form auf mit einem Durchmesser d, der geringfügig kleiner ist, als der Inndendurchmesser i des röhrenförmigen Gehäuses 2. Die Aussenseite 20 des Beutels 19 besitzt eine möglichst glatten Oberfläche, vorzugsweise ist sie metallisiert. Zusammen mit der gleichfalls möglichst glatten Oberfläche der Gehäuseinnenwandung 3, welche vorzgusweise poliert ist, stellen Beutel 19 und Gehäuseinnenwandung 3 der komprimierenden Kraft des Kolbens 14 eine möglichst geringe Reibungskraft entgegen. Um bei den dennoch bestehenden, wenn auch sehr geringen Reibungskräften ein Reissen des Beutels 19 zu vermeiden, wird die Wandstärke b des Beutels 19 zu etwa 0,1 mm bis etwa 1 mm, vorzugsweise etwa 0,3 mm gewählt.The tubular housing 2 is designed to accommodate a viscous, pasty or solid M which is assigned within a compressible bag 19. The filled bag 19 has an approximately cylindrical shape with a diameter d that is slightly smaller than the inner diameter i of the tubular housing 2. The outside 20 of the bag 19 has a surface that is as smooth as possible, preferably it is metallized. Together with the same if possible smooth surface of the housing inner wall 3, which is preferably polished, the bag 19 and the inner wall 3 of the compressive force of the piston 14 oppose the lowest possible frictional force. In order to avoid tearing of the bag 19 in the case of the existing, albeit very low, frictional forces, the wall thickness b of the bag 19 is selected to be approximately 0.1 mm to approximately 1 mm, preferably approximately 0.3 mm.

Auf Grund der Tatsache, dass die Reibungskraft zwischen dem Beutel 19 und der Gehäuseinnenwandung 3 sehr klein ist, muss die Masse M nicht mehr zur Gänze verlüssigt werden. Es reicht aus, dass nur der im Bereich des Abgabe- und/oder Applikationskopfes 5 befindliche Teil der meist festen Masse M durch Erhitzen verflüssigt wird. Zu diesem Zweck sind die Mittel 11 zur Beheizung der Gehäusewandung 4 im wesentlichen nur im Bereich des Abgabe- und/oder Applikationskopfes 5 angeordnet. Vorzugsweise sind die Heizmittel 11 im Abgabe- und/oder Applikationskopf 5 angeordnet. Durch diese Heizmittel 11 wird der im vorderen Bereich des Beutels 19 befindliche Teil der Masse verflüssigt, der in eine etwa kegelförmige Vertiefung 6 in der dem Gehäuseinneren zugewandten Seite 7 des Abgabe- und/oder Applikationskopfes 5 ragt. Die kegelförmige Vertiefung 6 erstreckt sich etwa von der Gehäuseinnenwandung 3 bis zu einer vorzugsweise zentral angeordneten Abgabeöffnung 8 im Abgabe- und/oder Applikationskopf 5. Die Abgabeöffnung 8 steht über einen Kanal 9 mit einem vorzugsweise an der seitlichen Aussenwandung des Abgabe- und/oder Applikationskopfes 5 vorgesehenden Schlauchanschluss 10 in Verbindung.Due to the fact that the frictional force between the bag 19 and the housing inner wall 3 is very small, the mass M no longer has to be completely lost. It is sufficient that only that part of the mostly solid mass M located in the area of the dispensing and / or application head 5 is liquefied by heating. For this purpose, the means 11 for heating the housing wall 4 are essentially arranged only in the area of the dispensing and / or application head 5. The heating means 11 are preferably arranged in the dispensing and / or application head 5. This heating means 11 liquefies the part of the mass located in the front region of the bag 19, which protrudes into an approximately conical recess 6 in the side 7 of the dispensing and / or application head 5 facing the interior of the housing. The conical recess 6 extends approximately from the housing inner wall 3 to a preferably centrally arranged dispensing opening 8 in the dispensing and / or application head 5. The dispensing opening 8 is located above a channel 9 with a preferably on the lateral outer wall of the dispensing and / or application head 5 provided hose connection 10 in connection.

Durch den Druck des Kolbens 14 wird der Beutel 19 mit der Masse M in Richtung des Abgabe- und/oder Applikationskopfes 5 gedrückt. Der verflüssigte Teil der Masse M wird durch als Schlitze 22 in der dem Kopf 5 zugewandten Seite 21 des Beutels 19 ausgebildete Sollbruchstellen aus dem Beutel 19 gepresst und über die Abgabeöffnung 8 und den Kanal 9 und einen an den Schlauchanschluss 10 angeschlossenen Schlauch 17 zu einer Applikationspistole 18 geleitet. Der Schlauch 17 ist vorzugsweise beheizbar. Die Schlitze 22 gehen vorzugsweise sternförmig vom Beutelzentrum aus.The pressure of the piston 14 pushes the bag 19 with the mass M in the direction of the dispensing and / or application head 5. The liquefied part of the mass M is pressed out of the bag 19 by predetermined breaking points formed as slits 22 in the side 21 of the bag 19 facing the head 5 and via the dispensing opening 8 and the channel 9 and a hose 17 connected to the hose connection 10 to form an application gun 18 headed. The hose 17 is preferably heatable. The slots 22 preferably extend in a star shape from the bag center.

Während in Fig. 1 ein voller Beutel 19 dargestellt ist, zeigt Fig. 2 die Situation mit einem bereits teilweise entleerten und komprimierten Beutel 19. Bei weiterem Auspressen wird der Beutel 19 zu einem sehr kleinen Volumen zusammengepresst.While a full bag 19 is shown in FIG. 1, FIG. 2 shows the situation with a bag 19 that has already been partially emptied and compressed. Upon further pressing, the bag 19 is compressed to a very small volume.

In Fig. 3 ist ein Schnitt durch den Abgabe- und Applikationskopf 5 dargestellt. Deutlich sichtbar sind die zentrale Abgabeöffnung 8, der Kanal 9 und der Schlauchausschluss 10. Die etwa kegelförmige Vertiefung 6 in der Innenseite 7 des Kopfes 5 ist angedeutet. Im vorliegenden Ausführungsbeispiel umfassen die Heizmittel 11 vorzugsweise elektrisch betreibbare und regelbare Heizpatronen. Diese sind etwa sternförmig um die zentrale Abgabeöffnung 8 angeordnet. Zusätzlich weist der Abgabe- und/oder Applikationskopf 5 noch eine radiale Bohrung 12 für einen Temperaturfühler 13 auf. Dieser Temperaturfühler 13 detektiert die gewünschte Arbeitstempertur und ist über die Heizmittel 11 rückgekoppelt, so dass die Temperatur möglichst genau regelbar ist. Der Abgabe- und/oder Applikationskopf 5 ist lösbar mit dem Gehäuse 2 verbunden. Für die Betriebssicherheit ist es von Vorteil, den Abgabe- und/oder Applikationskopf 5, das Gehäuse 2 und sämtliche Verbindungen druckfest auszubilden. Vorzugsweise ist daher das Gehäuse 2 aus Stahl mit einer Wandstärke z von etwa 1 mm bis etwa 20 mm. Der Kopf 5 ist ebenfalls vorzugsweise aus Stahl, seine Innenseite 7 vorzugsweise mit Polytetrafluoräthylen (PTFE) beschichtet3 shows a section through the dispensing and application head 5. Clear The central discharge opening 8, the channel 9 and the hose exclusion 10 are visible. The approximately conical recess 6 in the inside 7 of the head 5 is indicated. In the present exemplary embodiment, the heating means 11 preferably comprise electrically operable and controllable heating cartridges. These are arranged approximately in a star shape around the central delivery opening 8. In addition, the dispensing and / or application head 5 also has a radial bore 12 for a temperature sensor 13. This temperature sensor 13 detects the desired working temperature and is fed back via the heating means 11, so that the temperature can be regulated as precisely as possible. The dispensing and / or application head 5 is detachably connected to the housing 2. For operational safety, it is advantageous to design the dispensing and / or application head 5, the housing 2 and all connections to be pressure-resistant. The housing 2 is therefore preferably made of steel with a wall thickness z of approximately 1 mm to approximately 20 mm. The head 5 is also preferably made of steel, its inside 7 preferably coated with polytetrafluoroethylene (PTFE)

Fig. 4 zeigt ein Beispiel für ein Gebinde zum Einsatz in der erfindungsgemässen Förderanlage 1. Der komprimierbare Beutel 19 mit der Masse M ist innerhalb eines Schutzrohres 23 angeordnet. Der Innendurchmesser m des Schutzrohres 23 ist geringfügig kleiner als der Innendurchmesser i des rohrförmigen Gehäuses 2. Die Wandstärke des Schutzrohres 23 ist so bemessen, dass das Schutzrohr 23 ausreichend einer Verformung des gefüllten Beutels 19 entgegenwirkt. Auf diese Weise ist sichergestellt, dass der Beutel 19 seine Form während der Lagerung und des Transportes beibehält und immer leicht in das röhrenförmige Gehäuse 2 einführbar ist.4 shows an example of a container for use in the conveyor system 1 according to the invention. The compressible bag 19 with the mass M is arranged inside a protective tube 23. The inner diameter m of the protective tube 23 is slightly smaller than the inner diameter i of the tubular housing 2. The wall thickness of the protective tube 23 is dimensioned such that the protective tube 23 sufficiently counteracts a deformation of the filled bag 19. In this way it is ensured that the bag 19 maintains its shape during storage and transportation and is always easy to insert into the tubular housing 2.

Die erfindungsgemässe Förderanlage insbesondere für heissschmelzende Kleber ist sowohl als grössere Standanlage für Gebinde mit bis zu 50 kg Masse und mehr herstellbar, als auch als kleine Förderanlage für kleine Klebermengen in Form einer Kartuschenpresse für Kartuschen mit etwa 1 kg Inhalt. Im letzten Fall kann die Förderanlage auch direkt in die Applikationspistole integriert sein. Es werden keine aufwendigen Pumpen benötigt. Aufgrund der Tatsache, dass immer nur ein kleiner Teil der Masse verflüssigt werden muss, treten keine Degradationen bzw. Verschlechterungen der Klebereigenschaften auf und der Beutelinhalt wird zu Gänze genutzt. Es gibt kaum Verschmutzungsprobleme und das Abfallvolumen wird stark reduziert. Ueberdies ist das Gebinde einfach und billig in der Herstellung.The conveyor system according to the invention, in particular for hot-melt adhesive, can be produced both as a larger stand system for containers with a mass of up to 50 kg and more, and also as a small conveyor system for small amounts of adhesive in the form of a cartridge press for cartridges with a content of about 1 kg. In the latter case, the conveyor system can also be integrated directly into the application gun. No complex pumps are required. Due to the fact that only a small part of the mass has to be liquefied, no degradation or deterioration of the adhesive properties occurs and the contents of the bag are fully used. There are hardly any pollution problems and the volume of waste is greatly reduced. In addition, the container is simple and cheap to manufacture.

Claims (14)

Förderanlage für zähflüssige, pastöse oder im kalten Zustand feste Massen, insbesondere für heissschmelzende Kleber, welche ein im wesentlichen röhrenförmiges Gehäuse (2) zur Aufnahme der Masse (M) aufweist, dessen eines Ende mit einem Abgabe- und/oder Applikationskopf (5) für die zähflüssige, pastöse oder im kalten Zustand feste Masse (M) ausgestattet ist, dessen gegenüberliegendes anderes Ende zur Aufnahme eines manuell, pneumatisch, hydraulisch oder anderswie darin verschiebbaren Kolbens (14) ausgebildet ist und dessen Wandung (4) beheizbar ist, dadurch gekennzeichnet, dass die Mittel (11) zur Beheizung der Gehäusewandung (4) im wesentlichen im Bereich des Abgabe- und/oder Applikationskopfes (5) angebracht sind, und dass die zu fördernde Masse innerhalb eines komprimierbaren Beutels (19) angeordnet ist.Conveyor system for viscous, pasty or solid masses in the cold state, in particular for hot-melt adhesives, which has an essentially tubular housing (2) for receiving the mass (M), one end of which has a dispensing and / or application head (5) for the viscous, pasty or solid mass (M) is equipped, the opposite other end of which is designed to receive a piston (14) which can be moved manually, pneumatically, hydraulically or in some other way and the wall (4) of which is heatable, characterized in that that the means (11) for heating the housing wall (4) are attached essentially in the area of the dispensing and / or application head (5), and that the mass to be conveyed is arranged within a compressible bag (19). Förderanlage gemäss Anspruch 1, dadurch gekennzeichnet, dass die Innenwandung (3) des Gehäuses (2) eine möglichst glatte, vorzugsweise polierte, Oberfläche aufweist und dass die Aussenseite (20) des Beutels (19) eine möglichst glatte, vorzugsweise metallisierte, Oberfläche besitzt.Conveyor system according to claim 1, characterized in that the inner wall (3) of the housing (2) has a surface that is as smooth as possible, preferably polished, and that the outside (20) of the bag (19) has a surface that is as smooth as possible, preferably metallized. Förderanlage gemäss Anspruch 1, dadurch gekennzeichnet, dass die Wandstärke (b) des Beutels (19) von etwa 0,1 mm bis etwa 1 mm, vorzugsweise etwa 0,3 mm beträgt.Conveyor system according to claim 1, characterized in that the wall thickness (b) of the bag (19) is from approximately 0.1 mm to approximately 1 mm, preferably approximately 0.3 mm. Förderanlage gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Beutel (19) an seiner im eingesetzten Zustand dem Abgabe- und/oder Applikationskopf (5) zugewandten Seite (21) mit sternförmig vom Zentrum ausgehenden Schlitzen (22) als Sollbruchstellen versehen ist.Conveyor system according to one of the preceding claims, characterized in that the bag (19) on its side facing the dispensing and / or application head (5) in the inserted state is provided with slots (22) starting from the center in a star shape as predetermined breaking points. Förderanlage gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Durchmesser (d) des mit der zu fördernden Masse (M) gefüllten Beutels (19) gerinfügig kleiner ist, als der Innendurchmesser (i) des Gehäuses (2).Conveyor system according to one of the preceding claims, characterized in that the diameter (d) of the bag (19) filled with the mass to be conveyed (M) is slightly smaller than the inside diameter (i) of the housing (2). Förderanlage gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Heizmittel (11) im Abgabe- und/oder Applikationskopf (5) angeordnet sind.Conveyor system according to one of the preceding claims, characterized in that the heating means (11) are arranged in the dispensing and / or application head (5). Förderanlage gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die dem Gehäuseinneren zugwandte Seite (7) des Abgabe- und/oder Applikationskopfes (5) eine etwa kegelförmige Vertiefung (6) aufweist, welche sich etwa von der Gehäuseinnenwandung (3) ausgehend bis zu einer vorzugsweise zentral angeordneten Abgabeöffnung (8) erstreckt, die über einen vorzugsweise radialen Kanal (9) mit einem seitlich am Abgabe- und/oder Applikationskopf (5) angebrachten Schlauchanschluss (10) in Verbindung steht.Conveyor system according to one of the preceding claims, characterized in that the side (7) of the dispensing and / or application head (5) facing the interior of the housing has an approximately conical recess (6) which is approximately extends from the housing inner wall (3) to a preferably centrally arranged dispensing opening (8) which is connected via a preferably radial channel (9) to a hose connection (10) attached to the side of the dispensing and / or application head (5). Förderanlage gemäss Anspruch 7, dadurch gekennzeichnet, dass die Heizmittel (11) vorzugsweise elektrisch betreib- und regelbare Heizpatronen umfassen, welche etwa sternförmig um die Abgabeöffnung (8) angeordnet sind.Conveyor system according to claim 7, characterized in that the heating means (11) preferably comprise electrically operable and controllable heating cartridges which are arranged approximately in a star shape around the discharge opening (8). Förderanlage gemäss Anspruch 8, dadurch gekennzeichnet, dass der Abgabe- und/oder Applikationskopf (5) eine radiale Bohrung (12) aufweist, in die ein Temperaturfühler (13) einführbar ist, der vorzugsweise über die Heizmittel (11) rückkoppelt.Conveyor system according to claim 8, characterized in that the dispensing and / or application head (5) has a radial bore (12) into which a temperature sensor (13) can be inserted, which preferably feeds back via the heating means (11). Förderanlage gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Abgabe- und/oder Applikationskopf (5) mit dem Gehäuse (2) lösbar verbunden ist.Conveyor system according to one of the preceding claims, characterized in that the dispensing and / or application head (5) is detachably connected to the housing (2). Förderanlage gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (2), der Abgabe- und/oder Applikationskopf (5) und sämtliche Verbindungen druckfest ausgebildet sind.Conveyor system according to one of the preceding claims, characterized in that the housing (2), the dispensing and / or application head (5) and all connections are designed to be pressure-resistant. Förderanlage gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Kolben (14) in zurückgezogenem Zustand in Gänze innerhalb des Gehäuses (2) angeordnet ist.Conveyor system according to one of the preceding claims, characterized in that the piston (14) is arranged entirely within the housing (2) in the retracted state. Förderanlage gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (2) aus Stahl mit einer Wandstärke z von vorzugsweise etwa 1 mm bis etwa 20 mm ist.Conveyor system according to one of the preceding claims, characterized in that the housing (2) is made of steel with a wall thickness z of preferably approximately 1 mm to approximately 20 mm. Gebinde zum Einsatz in einer Förderanlage (1) gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der in das Gehäuse (2) einsetzbare komprimierbare Beutel (19) mit der zu fördernden Masse (M) innerhalb eines Schutzrohres (23) lager- und transportierbar ist, dessen Innendurchmesser (m) geringfügig kleiner ist als der Innendurchmesser (i) des Gehäuses (2), und dessen Wandstärke ausreichend bemessen ist, um einer Verformung des gefüllten Beutels entgegenzuwirken.Container for use in a conveyor system (1) according to one of the preceding claims, characterized in that the compressible bag (19) with the mass (M) to be conveyed, which can be inserted into the housing (2), can be stored and transported within a protective tube (23) whose inner diameter (m) is slightly smaller than the inner diameter (i) of the housing (2), and the wall thickness of which is sufficiently dimensioned to counteract deformation of the filled bag.
EP90810971A 1989-12-19 1990-12-11 Supplying device for liquid, pasty or cold state solid materials, particularly hot-melt adhesives Expired - Lifetime EP0434617B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90810971T ATE99567T1 (en) 1989-12-19 1990-12-11 CONVEYING SYSTEM FOR VISCUUS, PASTY OR COLD SOLID MASSES, PARTICULARLY FOR HOT MELT ADHESIVES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH456389 1989-12-19
CH4563/89 1989-12-19

Publications (3)

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EP0434617A1 true EP0434617A1 (en) 1991-06-26
EP0434617B1 EP0434617B1 (en) 1994-01-05
EP0434617B2 EP0434617B2 (en) 1996-04-17

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EP90810971A Expired - Lifetime EP0434617B2 (en) 1989-12-19 1990-12-11 Supplying device for liquid, pasty or cold state solid materials, particularly hot-melt adhesives

Country Status (5)

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EP (1) EP0434617B2 (en)
AT (1) ATE99567T1 (en)
AU (1) AU6818990A (en)
DE (1) DE59004139D1 (en)
ZA (1) ZA9010173B (en)

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DE10323810B3 (en) * 2003-05-23 2004-11-18 Hs Klebtec Klebetechnik Und Sondermaschinen Gmbh Equipment for coating hot-melt air-hardening polyurethane adhesive includes plunger driven by piston into cartridge situated on heated mounting with cannula
DE102004011628B4 (en) * 2004-03-10 2006-04-20 Hs Klebtec Klebetechnik Und Sondermaschinen Gmbh Device for application of hot melt glue has tubular glue holder, which by bottom end is in communication with heating and pumping units for feed of melted glue, and heated support ring is provided to support glue drum
WO2007122442A1 (en) * 2006-04-25 2007-11-01 Cl Inspiration Llc Dispenser for adhesive materials in liquid form
DE202007016706U1 (en) * 2007-11-28 2009-04-09 Inatec Gmbh Piston wiper plate for squeezing device for bag smelter and associated bag smelter
DE202007016705U1 (en) * 2007-11-28 2009-04-09 Inatec Gmbh bag melter
ITMI20110406A1 (en) * 2011-03-15 2012-09-16 Preo S R L EQUIPMENT FOR HEATING AND WITHDRAWAL OF COLLAR FROM A CARTRIDGE TO HOLD
WO2019106071A1 (en) * 2017-12-01 2019-06-06 Klebchemie M. G. Becker Gmbh & Co. Kg Device and method for melting a hot-melt adhesive

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DE10323810B3 (en) * 2003-05-23 2004-11-18 Hs Klebtec Klebetechnik Und Sondermaschinen Gmbh Equipment for coating hot-melt air-hardening polyurethane adhesive includes plunger driven by piston into cartridge situated on heated mounting with cannula
DE102004011628B4 (en) * 2004-03-10 2006-04-20 Hs Klebtec Klebetechnik Und Sondermaschinen Gmbh Device for application of hot melt glue has tubular glue holder, which by bottom end is in communication with heating and pumping units for feed of melted glue, and heated support ring is provided to support glue drum
WO2007122442A1 (en) * 2006-04-25 2007-11-01 Cl Inspiration Llc Dispenser for adhesive materials in liquid form
EP2214839B1 (en) * 2007-11-28 2016-09-28 Illinois Tool Works Inc. Melting system for bags
DE202007016706U1 (en) * 2007-11-28 2009-04-09 Inatec Gmbh Piston wiper plate for squeezing device for bag smelter and associated bag smelter
DE202007016705U1 (en) * 2007-11-28 2009-04-09 Inatec Gmbh bag melter
WO2009068310A1 (en) 2007-11-28 2009-06-04 Inatec Gmbh Melting system for bags
EP2214839A1 (en) * 2007-11-28 2010-08-11 Inatec GMBH Melting system for bags
EP2227338B1 (en) * 2007-11-28 2012-03-21 "INATEC Innovative Auftragstechnologie" GmbH Melting systems for bags
ITMI20110406A1 (en) * 2011-03-15 2012-09-16 Preo S R L EQUIPMENT FOR HEATING AND WITHDRAWAL OF COLLAR FROM A CARTRIDGE TO HOLD
EP2500108A1 (en) 2011-03-15 2012-09-19 Preo S.r.l. Apparatus for heating and extracting adhesives from sealed cartridges
WO2019106071A1 (en) * 2017-12-01 2019-06-06 Klebchemie M. G. Becker Gmbh & Co. Kg Device and method for melting a hot-melt adhesive
CN111432943A (en) * 2017-12-01 2020-07-17 克力宝胶粘剂化学有限公司 Apparatus and method for melting hot melt adhesive
RU2764987C2 (en) * 2017-12-01 2022-01-24 Клебхеми М. Г. Беккер Гмбх Унд Ко. Кг Device and method for melting hot-melt glue
CN111432943B (en) * 2017-12-01 2022-08-30 克力宝胶粘剂化学有限公司 Apparatus and method for melting hot melt adhesive
US11458652B2 (en) 2017-12-01 2022-10-04 Klebchemie M. G. Becker Gmbh & Co. Kg Device and method for melting a hot-melt adhesive

Also Published As

Publication number Publication date
ATE99567T1 (en) 1994-01-15
DE59004139D1 (en) 1994-02-17
EP0434617B1 (en) 1994-01-05
AU6818990A (en) 1991-06-27
EP0434617B2 (en) 1996-04-17
ZA9010173B (en) 1991-09-25

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