EP1437303A2 - Process and device for applying glue to packaging material - Google Patents

Process and device for applying glue to packaging material Download PDF

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Publication number
EP1437303A2
EP1437303A2 EP03029332A EP03029332A EP1437303A2 EP 1437303 A2 EP1437303 A2 EP 1437303A2 EP 03029332 A EP03029332 A EP 03029332A EP 03029332 A EP03029332 A EP 03029332A EP 1437303 A2 EP1437303 A2 EP 1437303A2
Authority
EP
European Patent Office
Prior art keywords
glue
pressure
packaging material
material web
nozzle
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
EP03029332A
Other languages
German (de)
French (fr)
Other versions
EP1437303A3 (en
EP1437303B1 (en
EP1437303B2 (en
Inventor
Ingo Ferber
Thomas Kracke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Focke and Co GmbH and Co KG
Original Assignee
Focke and Co GmbH and Co KG
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Filing date
Publication date
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Application filed by Focke and Co GmbH and Co KG filed Critical Focke and Co GmbH and Co KG
Publication of EP1437303A2 publication Critical patent/EP1437303A2/en
Publication of EP1437303A3 publication Critical patent/EP1437303A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • 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
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
    • B05C11/1023—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target responsive to velocity of target, e.g. to web advancement rate
    • 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
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/02—Applying adhesives or sealing liquids
    • B65B51/023—Applying adhesives or sealing liquids using applicator nozzles
    • 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
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
    • B05C11/1013—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to flow or pressure of liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B31B50/624—Applying glue on blanks

Definitions

  • the invention relates to a method for applying glue, in particular the Type hotmelt, on packaging material transported during the glue transfer, preferably on a continuous material web for the production of blanks, by means of glue nozzles with closable nozzle openings, the glue under pressure - glue pressure - during a phase of glue transfer to the Packaging material is fed.
  • the invention further relates to a device to carry out the procedure.
  • the gluing of the packaging material - individual blanks or a continuous one Material web - is special for packaging machines with high performance Problem. This applies especially to the manufacture of cigarette packs with short cycle times of the packaging machine.
  • the packaging material, So especially the material web is during the transfer of the glue transported. Glue units used for this are therefore preferably included Contact glue nozzles equipped.
  • the packaging material is during gluing at the mouths or nozzle openings of the contact glue nozzles.
  • the transfer of glue by means of contact nozzles is known from EP 0 765 811.
  • the invention has for its object measures for influencing the glue areas transferred to the packaging material according to the respective Propose tasks.
  • the method according to the invention is characterized in that that the glue pressure acting on the glue is adjusted individually according to the conveying speed of the packaging material or the Material web and / or the viscosity of the glue and / or a layer thickness of glue areas to be transferred to the packaging material.
  • Glue pressure acting glue pressure according to a number of parameters adjustable. This is not only a higher glue pressure at higher conveying speeds effective. The behavior of the glue (viscosity) must also be taken into account. Finally, the layer thickness of the glue areas to be produced plays a role on the packaging material a role in setting the glue pressure.
  • a special feature of the invention is a dynamic control of the glue pressure adapting to the current conveying speed of the packaging material.
  • the procedure is such that the change in the angle of rotation of a Resolver is determined and converted into a speed value, in particular cyclically.
  • the speed value becomes one in the control stored algorithm calculates an adjusted pressure value.
  • This cyclic calculation of the surface pressure can, according to the invention, for each Format, i.e. for each size and / or shape of blanks to be produced, one Curve in the control system.
  • the current format is selected.
  • the (pressure) curve is shifted to change the order thickness.
  • the glue unit is connected to a (central) machine control connected, which controls the regulation of the glue pressure, in particular via a Pressure control valve in a glue line leading to the glue unit.
  • a (central) machine control connected, which controls the regulation of the glue pressure, in particular via a Pressure control valve in a glue line leading to the glue unit.
  • a contact glue nozzle is used use as a slot die.
  • the slot die has several individually or group-operated nozzle openings.
  • the (intermittent) funding movement The material web is scanned and the result in the central machine control entered.
  • This controls individual shut-off devices of the nozzles, the glue supply via a glue pump, the pressure control valve and a compressed air control unit for the pressure control valve.
  • the device also has a data input unit on, in particular a PC, in which the parameters individually on site for setting the glue pressure can be entered.
  • the blank is designed as an outer wrapper for a cigarette pack, namely for a pack 10 (cigarette stick).
  • the cut forms a front wall 11 a side wall 12 and a rear wall 13.
  • One to the side wall 12 opposite side wall consists of two overlapping Folding tabs, namely edge strips 14, 15. These become (partial) overlap bound together by glue.
  • the outer, wider edge strip 15 is provided with glue on the inside for this purpose, namely with a number of glue surfaces 16.
  • the elongated edge strip 15 is therefore not provided with a continuous strip of glue, but with a plurality of spaced-apart, rectangular glue surfaces 16, specifically in the present case Trap with six glue areas.
  • edge flaps 17 are provided and each as an outer cover of the end walls a cover tab 18. Its dimensions correspond essentially the dimensions of the front wall.
  • the cover flap 18 is adjacent End flaps 17 delimited by die cuts 19. Even the cover cloth 18 has gluing on its inside, namely an elongated one Glue strips 20.
  • the cut is made by a continuous during the manufacture of the pack Material web 21 separated and fed to a folding turret 22. In the same area the cut is immediately around a group of cigarette packs or - as in the example shown - an already formed packaging 10 folded around.
  • the glue surfaces attached to the blank (Fig. 1) 16 and glue strips 20 consist of hot melt glue. This hardened glue is after folding the edge strips 14, 15 or the front flaps 17, 18 by feeding activated by heat and the folding flaps connected by pressure, specifically in the area of the folding turret 22.
  • the (originally) flowable glue is applied to the material web by a glue unit 23 21 applied.
  • the glue unit 23 has a glue nozzle 24, and one slot die or several slot dies with a number of juxtaposed, slit-shaped nozzle openings 25, 26.
  • the glue to create the glue surfaces 16 or glue strips 20 by contacting the Transfer material web 21 with the glue unit or the nozzle openings 25, 26.
  • the glue unit 23 is essentially in the range of one upright web section 27 of the material web 21 positioned.
  • the down here funded web of material 21 is at least during the duration of the transfer of glue applied or pressed onto the glue unit 23, specifically in the area of the nozzle openings 25, 26.
  • a movable, namely swiveling pressing mechanism 28 is provided, which temporarily removes the material web 21 presses against the glue nozzle 24.
  • the blanks (Fig. 1) are positioned within the material web 21 so that the Follow walls 11.15 in the conveying direction.
  • the glue pictures, namely Glue surfaces 16 on the one hand and glue strips 20 on the other hand become one through the width of the nozzle openings 25, 26 transversely to the conveying direction and to the other by the duration of the effectiveness or opening of the nozzle openings 25, 26 determines, namely the dimension of the glue surfaces in the direction of movement of the material web 21.
  • the edge-side nozzle openings 26 serve to transmit the Glue strips 20 with a corresponding opening time.
  • the side by side Glue surfaces 16 are simultaneously through the corresponding number of nozzle openings 25 created, the duration of which is correspondingly shorter.
  • Each nozzle opening 25, 26 or a plurality of nozzle openings 25 is associated with a shut-off device, namely an (electrical) valve 29, 30.
  • the two middle valves 29 are each several (three) nozzle openings 25 and the valves 30 are each assigned to the edge-side nozzle openings 26.
  • the valves 29 are depending on the working cycle of the glue unit 23 or Packing machine controlled, in this particular Embodiment of a (central) machine control 31 of the packaging machine.
  • Glue especially in the hotmelt version, is transferred to the glue unit 23 a (common) glue line 32 supplied. This is preferably heated, namely when using hot melt glue.
  • the glue becomes a glue container 33 removed and pressed into the glue line 32 by a glue pump 34.
  • a glue pump 34 In the Glue line 32 generates a relatively high pressure, namely up to 20 bar.
  • the glue supply or the glue pump 34 is controlled by a control unit 35, which are connected to the machine controller 31 via a signal line 36 is.
  • a special feature is the exact control of the glue quantities delivered, such that regardless of the relative movement between material web 21 and Glue unit 23 and a constant regardless of the properties of the glue or a glue transfer to the packaging material that is controllable with regard to the layer thickness given is.
  • the glue is in the area the glue nozzle 24 or pressure exerted in the region of the nozzle openings 25, 26, so a glue pressure, adjustable.
  • the glue pressure is determined by a common pressure control valve 37. This is attached laterally to a housing of the glue unit 23 and determines the Glue pressure for the entire glue nozzle 24 or for all nozzle openings 25, 26, and in the area of the glue line 32. Alternatively, several individually controllable Pressure regulating valves (in the glue unit 23) are used to individual or groups of nozzle openings to regulate the effective glue pressure.
  • the glue pressure determined by the pressure control valve 37 is between 4 bar and a maximum of 20 bar.
  • the pressure control valve 37 is controlled by a compressed air regulator 38 which via a compressed air line 39 with a compressed air source on the one hand and via a Control air line 40 is connected to the pressure control valve 37 on the other hand.
  • a special feature is the adjustability of the glue pressure through a data input device, 3, a PC 54. This is via a signal line 55 connected to the control unit or the machine controller 31.
  • a screen 56 shows the entered data, here using a graphic Presentation.
  • the PC 54 is set up to change specifications or parameters to enter, in particular the peculiarities relevant to processing the glue, e.g. B. the viscosity.
  • the desired layer thickness can of the glue for the glue areas entered on the packaging material become.
  • the glue pressure can be set on the PC so that the Glue strips 20 on the one hand and the glue surfaces 16 on the other hand different Have layer thicknesses.
  • the opening duration and the opening stroke of the Nozzle openings 25, 26 - in particular depending on the size of each blanks to be produced - are entered into the machine control 31.
  • the conveying movement of the material web 21 is in the embodiment shown recorded directly in the area of the material web 41.
  • the resolver 43 is over a Signal line 44 is also connected to the machine controller 31. This accordingly recognizes the sequence of movements of the material web 21 in the (cyclical) Preference.
  • the pressure control valve 37 is actuated via the compressed air regulator 38, such that in the glue nozzle 24 one of the movement and possibly another Corresponding glue pressure is generated.
  • the required opening time the nozzle openings 25, 26 is adapted in an adapted manner by the valves 29, 30 determined.
  • Line 47 shows the speed curve with a larger cut with a correspondingly higher maximum speed.
  • Line 49 refers to a smaller cut with corresponding movement characteristics.
  • the lines 51, 52, 53 correspond in content to the Lines 47, 48, 49 of FIG. 4.
  • the pressure curve and the pressure height are shown in dependence from the time.
  • Each of the lines 51, 52, 53 or curves can be one of the Curves or lines 47, 48, 49 of the diagram according to FIG. 4 can be assigned.
  • a work or movement cycle according to line 47 i.e. with high maximum speed of the material web 41
  • a (pressure / time) line 53 can be assigned, i.e.
  • a pressure curve according to line 53 is appropriate.
  • the curves or lines 51, 52, 53 can have a non-uniform course to show that according to the set program the pressure during a working cycle, i.e. during a gluing phase, can specifically change. Referring to the blank of FIG. 1 a greater layer thickness of the glue strips 20 is desired because these fold fix in the area of the end walls.
  • the glue surfaces 16 for connecting the edge strips 14, 15 can have a smaller layer thickness because of a sufficient one Fixation can be achieved by the majority of the glue surfaces 16.
  • the glue pressure is regulated dynamically with adaptation to the current conveying speed of the material web.
  • p is the speed-dependent glue pressure
  • p 1 is a set minimum pressure (FIG. 5)
  • m is a factor according to the individually adjustable thickness of the glue layer
  • v is a number analogous to the web speed.
  • other parameters can also be taken into account, namely different layer thicknesses of glue areas.
  • the illustrated method of transferring glue to packaging material is also applicable for the promotion of individual, pre-made cuts. Furthermore is an application with cyclically conveyed material webs makes sense if this run at non-uniform speed, e.g. when starting and decelerating the packaging machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Package Closures (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Container Filling Or Packaging Operations (AREA)

Abstract

As hot-melt glue is transferred onto a length of fabric for blanks, transfer of glue depends on the speed at which the length of fabric is feed through and on other parameters. Glue pressure applied to the glue is controlled in accordance with the movement of the length of material to be glued. This is done via a pressure control valve (37) linked to a central machine controller (31). An Independent claim is also included for a device for applying hot-melt glue/adhesive on a packaging production line.

Description

Die Erfindung betrifft ein Verfahren zum Aufbringen von Leim, insbesondere des Typs hotmelt, auf während der Leimübertragung transportiertes Verpackungsmaterial, vorzugsweise auf eine fortlaufende Materialbahn zum Herstellen von Zuschnitten, mittels Leimdüsen mit verschließbaren Düsenöffnungen, denen Leim unter Druck - Leimdruck - während eine Phase der Leimübertragung auf das Verpackungsmaterial zugeführt wird. Weiterhin betrifft die Erfindung eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for applying glue, in particular the Type hotmelt, on packaging material transported during the glue transfer, preferably on a continuous material web for the production of blanks, by means of glue nozzles with closable nozzle openings, the glue under pressure - glue pressure - during a phase of glue transfer to the Packaging material is fed. The invention further relates to a device to carry out the procedure.

Die Beleimung des Verpackungsmaterials - einzelne Zuschnitte oder eine fortlaufende Materialbahn - ist bei Verpackungsmaschinen mit hoher Leistung ein besonderes Problem. Dies gilt vor allem bei der Herstellung von Zigarettenpackungen mit kurzen Taktzeiten der Verpackungsmaschine. Das Verpackungsmaterial, also insbesondere die Materialbahn, wird während der Übertragung des Leims transportiert. Hierfür eingesetzte Leimaggregate sind deshalb vorzugsweise mit Kontakt-Leimdüsen ausgerüstet. Das Verpackungsmaterial liegt dabei während der Beleimung an Mündungen bzw. Düsenöffnungen der Kontakt-Leimdüsen an. Die Übertragung von Leim mittels Kontaktdüsen ist bekannt durch EP 0 765 811. The gluing of the packaging material - individual blanks or a continuous one Material web - is special for packaging machines with high performance Problem. This applies especially to the manufacture of cigarette packs with short cycle times of the packaging machine. The packaging material, So especially the material web, is during the transfer of the glue transported. Glue units used for this are therefore preferably included Contact glue nozzles equipped. The packaging material is during gluing at the mouths or nozzle openings of the contact glue nozzles. The transfer of glue by means of contact nozzles is known from EP 0 765 811.

Der Erfindung liegt die Aufgabe zugrunde, Maßnahmen für eine Beeinflussung der auf das Verpackungsmaterial übertragenen Leimbereiche entsprechend den jeweiligen Aufgaben vorzuschlagen.The invention has for its object measures for influencing the glue areas transferred to the packaging material according to the respective Propose tasks.

Zur Lösung dieser Aufgabe ist das erfindungsgemäße Verfahren dadurch gekennzeichnet, dass der auf den Leim wirkende Leimdruck individuell eingestellt wird nach Maßgabe der Fördergeschwindigkeit des Verpackungsmaterials bzw. der Materialbahn und/oder der Viskosität des Leims und/oder einer Schichtdicke von auf das Verpackungsmaterial zu übertragenden Leimbereichen.To achieve this object, the method according to the invention is characterized in that that the glue pressure acting on the glue is adjusted individually according to the conveying speed of the packaging material or the Material web and / or the viscosity of the glue and / or a layer thickness of glue areas to be transferred to the packaging material.

Erfindungsgemäß ist der auf den Leim im Leimaggregat bzw. im Bereich der Leimdüsen wirkende Leimdruck nach Maßgabe einer Mehrzahl von Parametern einstellbar. So ist nicht nur bei höherer Fördergeschwindigkeit ein höherer Leimdruck wirksam. Die Verhaltensweise des Leims (Viskosität) ist ebenfalls zu berücksichtigen. Schließlich spielt die zu erzeugende Schichtdicke der Leimbereiche auf dem Verpackungsmaterial eine Rolle bei der Einstellung des Leimdrucks.According to the on the glue in the glue unit or in the area Glue pressure acting glue pressure according to a number of parameters adjustable. This is not only a higher glue pressure at higher conveying speeds effective. The behavior of the glue (viscosity) must also be taken into account. Finally, the layer thickness of the glue areas to be produced plays a role on the packaging material a role in setting the glue pressure.

Eine Besonderheit der Erfindung ist eine dynamische Steuerung des Leimdrucks unter Anpassung an die aktuelle Fördergeschwindigkeit des Verpackungsmaterials. Dabei wird insbesondere so vorgegangen, dass die Drehwinkeländerung eines Resolvers ermittelt und in einen Geschwindigkeitswert umgerechnet wird, insbesondere zyklisch. Aus dem Geschwindigkeitswert wird mit einem in der Steuerung hinterlegten Algorithmus ein angepasster Druckwert errechnet. Alternativ zu dieser zyklischen Berechnung des Leimdrucks kann erfindungsgemäß für jedes Format, also für jede herzustellende Größe und/oder Form von Zuschnitten, eine Kurve in der Steuerung hinterlegt sein. Das jeweils aktuelle Format wird ausgewählt. Zur Änderung der Auftragsdicke wird die (Druck-)Kurve verschoben.A special feature of the invention is a dynamic control of the glue pressure adapting to the current conveying speed of the packaging material. In particular, the procedure is such that the change in the angle of rotation of a Resolver is determined and converted into a speed value, in particular cyclically. The speed value becomes one in the control stored algorithm calculates an adjusted pressure value. alternative to This cyclic calculation of the surface pressure can, according to the invention, for each Format, i.e. for each size and / or shape of blanks to be produced, one Curve in the control system. The current format is selected. The (pressure) curve is shifted to change the order thickness.

Erfindungsgemäß ist das Leimaggregat an eine (zentrale) Maschinensteuerung angeschlossen, die die Regelung des Leimdrucks steuert, insbesondere über ein Druckregelventil in einer zum Leimaggregat führenden Leimleitung. Der in das Leimaggregat eintretende Leim hat demnach stets den auf Grund der zu berücksichtigenden Parameter erforderlichen Leimdruck. According to the invention, the glue unit is connected to a (central) machine control connected, which controls the regulation of the glue pressure, in particular via a Pressure control valve in a glue line leading to the glue unit. The one in that Glue aggregate entering therefore always has the glue to be taken into account Parameters required glue pressure.

Bei der erfindungsgemäßen Vorrichtung findet eine Kontakt-Leimdüse in der Ausführung als Breitschlitzdüse Verwendung. Die Breitschlitzdüse weist mehrere einzeln oder in Gruppen betätigbare Düsenöffnungen auf. Die (taktweise) Förderbewegung der Materialbahn wird abgetastet und das Ergebnis in die zentrale Maschinensteuerung eingegeben. Diese steuert einzelne Absperrorgane der Düsen, die Leimzufuhr über eine Leimpumpe, das Druckregelventil und eine Druckluftregeleinheit für das Druckregelventil. Die Vorrichtung weist darüber hinaus eine Dateneingabeeinheit auf, insbesondere einen PC, in dem vor Ort individuell die Parameter für die Einstellung des Leimdrucks eingegeben werden können.In the device according to the invention, a contact glue nozzle is used use as a slot die. The slot die has several individually or group-operated nozzle openings. The (intermittent) funding movement The material web is scanned and the result in the central machine control entered. This controls individual shut-off devices of the nozzles, the glue supply via a glue pump, the pressure control valve and a compressed air control unit for the pressure control valve. The device also has a data input unit on, in particular a PC, in which the parameters individually on site for setting the glue pressure can be entered.

Weitere Besonderheiten der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigt:

Fig. 1
einen ausgebreiteten Zuschnitt mit einem Leimbild,
Fig. 2
einen Teilbereich einer Verpackungsmaschine in schematischer Seitenansicht für die Herstellung von Zigarettenpackungen,
Fig. 3
ein Schaltbild einer Leimeinheit,
Fig. 4
ein Diagramm über den Bewegungsablauf einer Materialbahn,
Fig. 5
ein Diagramm für den Druckverlauf (Leimdruck) für einen Beleimungszyklus.
Further special features of the invention are explained in more detail below with reference to the drawings. It shows:
Fig. 1
a spread blank with a glue pattern,
Fig. 2
a partial area of a packaging machine in a schematic side view for the production of cigarette packs,
Fig. 3
a circuit diagram of a glue unit,
Fig. 4
a diagram of the movement of a material web,
Fig. 5
a diagram for the pressure curve (glue pressure) for a gluing cycle.

Gemäß Fig. 1 ist ein Zuschnitt aus Papier, beschichtetem Papier oder Folie zu beleimen. Der Zuschnitt ist als Außenumhüllung für eine Zigarettenpackung konzipiert, nämlich für eine Gebindepackung 10 (Zigarettenstange). Der Zuschnitt bildet eine Vorderwand 11 eine Seitenwand 12 und eine Rückwand 13. Eine zur Seitenwand 12 gegenüberliegende Seitenwand besteht aus zwei einander überdeckenden Faltlappen, nämlich Randstreifen 14, 15. Diese werden bei (teilweiser) Überdeckung durch Leim miteinander verbunden. Der äußere, breitere Randstreifen 15 ist zu diesem Zweck an der Innenseite mit Leim versehen, nämlich mit einer Anzahl von Leimflächen 16. Der langgestreckte Randstreifen 15 ist demnach nicht mit einem durchgehenden Leimstreifen versehen, sondern mit einer Mehrzahl von im Abstand angeordneten, rechteckigen Leimflächen 16, und zwar im vorliegenden Falle mit sechs Leimflächen.1 is a blank made of paper, coated paper or film Gluing. The blank is designed as an outer wrapper for a cigarette pack, namely for a pack 10 (cigarette stick). The cut forms a front wall 11 a side wall 12 and a rear wall 13. One to the side wall 12 opposite side wall consists of two overlapping Folding tabs, namely edge strips 14, 15. These become (partial) overlap bound together by glue. The outer, wider edge strip 15 is provided with glue on the inside for this purpose, namely with a number of glue surfaces 16. The elongated edge strip 15 is therefore not provided with a continuous strip of glue, but with a plurality of spaced-apart, rectangular glue surfaces 16, specifically in the present case Trap with six glue areas.

Zur Bildung von einander gegenüberliegenden Stirnwänden der Gebindepackung 10 sind randseitige Stirnlappen 17 vorgesehen und jeweils als äußere Abdeckung der Stirnwände ein Decklappen 18. Dessen Abmessungen entsprechen im wesentlichen den Abmessungen der Stirnwand. Der Decklappen 18 ist von angrenzenden Stirnlappen 17 durch Stanzschnitte 19 abgegrenzt. Auch der Decklappen 18 weist an seiner Innenseite eine Beleimung auf, nämlich einen langgestreckten Leimstreifen 20.To form opposing end walls of the pack 10 edge flaps 17 are provided and each as an outer cover of the end walls a cover tab 18. Its dimensions correspond essentially the dimensions of the front wall. The cover flap 18 is adjacent End flaps 17 delimited by die cuts 19. Even the cover cloth 18 has gluing on its inside, namely an elongated one Glue strips 20.

Der Zuschnitt wird bei der Fertigung der Gebindepackung von einer fortlaufenden Materialbahn 21 abgetrennt und einem Faltrevolver 22 zugeführt. Im Bereich desselben wird der Zuschnitt unmittelbar um eine Gruppe von Zigarettenpackungen oder - wie bei dem gezeigten Beispiel - um eine bereits gebildete Gebindepackung 10 herumgefaltet. Die an dem Zuschnitt (Fig. 1) angebrachten Leimflächen 16 und Leimstreifen 20 bestehen aus hotmelt-Leim. Dieser ausgehärtete Leim wird nach Falten der Randstreifen 14, 15 bzw. der Stirnlappen 17, 18 durch Zuführen von Wärme aktiviert und die Faltlappen durch Druck miteinander verbunden, und zwar im Bereich des Faltrevolvers 22.The cut is made by a continuous during the manufacture of the pack Material web 21 separated and fed to a folding turret 22. In the same area the cut is immediately around a group of cigarette packs or - as in the example shown - an already formed packaging 10 folded around. The glue surfaces attached to the blank (Fig. 1) 16 and glue strips 20 consist of hot melt glue. This hardened glue is after folding the edge strips 14, 15 or the front flaps 17, 18 by feeding activated by heat and the folding flaps connected by pressure, specifically in the area of the folding turret 22.

Der (ursprünglich) fließfähige Leim wird durch ein Leimaggregat 23 auf die Materialbahn 21 aufgebracht. Das Leimaggregat 23 weist eine Leimdüse 24 auf, und zwar eine Breitschlitzdüse bzw. mehrere Breitschlitzdüsen mit einer Anzahl von nebeneinander angeordneten, schlitzförmigen Düsenöffnungen 25, 26. Der Leim zur Schaffung der Leimflächen 16 bzw. Leimstreifen 20 wird durch Kontakt der Materialbahn 21 mit dem Leimaggregat bzw. den Düsenöffnungen 25, 26 übertragen. Das Leimaggregat 23 ist zu diesem Zweck im Bereich eines im Wesentlichen aufrechten Bahnabschnitts 27 der Materialbahn 21 positioniert. Die hier abwärts geförderte Materialbahn 21 wird mindestens während der Dauer der Übertragung von Leim an das Leimaggregat 23 angelegt bzw. angedrückt, und zwar im Bereich der Düsenöffnungen 25, 26. Zu diesem Zweck ist ein bewegbares, nämlich schwenkbares Andrückorgang 28 vorgesehen, welches die Materialbahn 21 zeitweilig an die Leimdüse 24 andrückt.The (originally) flowable glue is applied to the material web by a glue unit 23 21 applied. The glue unit 23 has a glue nozzle 24, and one slot die or several slot dies with a number of juxtaposed, slit-shaped nozzle openings 25, 26. The glue to create the glue surfaces 16 or glue strips 20 by contacting the Transfer material web 21 with the glue unit or the nozzle openings 25, 26. For this purpose, the glue unit 23 is essentially in the range of one upright web section 27 of the material web 21 positioned. The down here funded web of material 21 is at least during the duration of the transfer of glue applied or pressed onto the glue unit 23, specifically in the area of the nozzle openings 25, 26. For this purpose, a movable, namely swiveling pressing mechanism 28 is provided, which temporarily removes the material web 21 presses against the glue nozzle 24.

Die Zuschnitte (Fig. 1) sind innerhalb der Materialbahn 21 so positioniert, dass die Wandungen 11..15 in Förderrichtung aufeinander folgen. Die Leimbilder, nämlich Leimflächen 16 einerseits und Leimstreifen 20 andererseits werden zum Einen durch die Breite der Düsenöffnungen 25, 26 quer zur Förderrichtung und zum Anderen durch die Dauer der Wirksamkeit bzw. Öffnung der Düsenöffnungen 25, 26 bestimmt, nämlich die Abmessung der Leimflächen in Bewegungsrichtung der Materialbahn 21. Die randseitigen Düsenöffnungen 26 dienen zur Übertragung der Leimstreifen 20 bei entsprechender Öffnungsdauer. Die nebeneinander liegenden Leimflächen 16 werden gleichzeitig durch die entsprechende Anzahl von Düsenöffnungen 25 geschaffen, wobei deren Öffnungsdauer entsprechend kürzer ist.The blanks (Fig. 1) are positioned within the material web 21 so that the Follow walls 11.15 in the conveying direction. The glue pictures, namely Glue surfaces 16 on the one hand and glue strips 20 on the other hand become one through the width of the nozzle openings 25, 26 transversely to the conveying direction and to the other by the duration of the effectiveness or opening of the nozzle openings 25, 26 determines, namely the dimension of the glue surfaces in the direction of movement of the material web 21. The edge-side nozzle openings 26 serve to transmit the Glue strips 20 with a corresponding opening time. The side by side Glue surfaces 16 are simultaneously through the corresponding number of nozzle openings 25 created, the duration of which is correspondingly shorter.

Eine exakte Steuerung und Regelung des Leimaggregats 23 ist für die Schaffung präziser Leimbilder wichtig. Jeder Düsenöffnung 25, 26 bzw. mehreren Düsenöffnungen 25 ist ein Absperrorgan zugeordnet, nämlich ein (elektrisches) Ventil 29, 30. Die beiden mittleren Ventile 29 sind je mehreren (drei) Düsenöffnungen 25 und die Ventile 30 jeweils den randseitigen Düsenöffnungen 26 zugeordnet. Die Ventile 29 werden in Abhängigkeit von dem Arbeitstakt des Leimaggregats 23 bzw. der Verpackungsmaschine gesteuert, und zwar bei dem vorliegenden besonderen Ausführungsbeispiel von einer (zentralen) Maschinensteuerung 31 der Verpackungsmaschine.An exact control and regulation of the glue unit 23 is for the creation precise glue patterns important. Each nozzle opening 25, 26 or a plurality of nozzle openings 25 is associated with a shut-off device, namely an (electrical) valve 29, 30. The two middle valves 29 are each several (three) nozzle openings 25 and the valves 30 are each assigned to the edge-side nozzle openings 26. The valves 29 are depending on the working cycle of the glue unit 23 or Packing machine controlled, in this particular Embodiment of a (central) machine control 31 of the packaging machine.

Leim, insbesondere in der Ausführung hotmelt, wird dem Leimaggregat 23 über eine (gemeinsame) Leimleitung 32 zugeführt. Diese ist vorzugsweise beheizt, nämlich bei Verwendung von hotmelt-Leim. Der Leim wird einem Leimbehälter 33 entnommen und durch eine Leimpumpe 34 in die Leimleitung 32 gedrückt. In der Leimleitung 32 wird ein verhältnismäßig hoher Druck erzeugt, nämlich bis zu 20 bar. Die Leimzufuhr bzw. die Leimpumpe 34 wird durch eine Steuereinheit 35 gesteuert, die über eine Signalleitung 36 mit der Maschinensteuerung 31 verbunden ist. Glue, especially in the hotmelt version, is transferred to the glue unit 23 a (common) glue line 32 supplied. This is preferably heated, namely when using hot melt glue. The glue becomes a glue container 33 removed and pressed into the glue line 32 by a glue pump 34. In the Glue line 32 generates a relatively high pressure, namely up to 20 bar. The glue supply or the glue pump 34 is controlled by a control unit 35, which are connected to the machine controller 31 via a signal line 36 is.

Eine Besonderheit ist die exakte Steuerung der abgegebenen Leimmengen, derart, dass unabhängig von der Relativbewegung zwischen Materialbahn 21 und Leimaggregat 23 und unabhängig von Eigenschaften des Leims eine konstante bzw. eine hinsichtlich der Schichtdicke steuerbare Leimübertragung auf das Verpackungsmaterial gegeben ist. Zu diesem Zweck ist der auf den Leim im Bereich der Leimdüse 24 bzw. im Bereich der Düsenöffnungen 25, 26 ausgeübte Druck, also ein Leimdruck, regelbar.A special feature is the exact control of the glue quantities delivered, such that regardless of the relative movement between material web 21 and Glue unit 23 and a constant regardless of the properties of the glue or a glue transfer to the packaging material that is controllable with regard to the layer thickness given is. For this purpose, the glue is in the area the glue nozzle 24 or pressure exerted in the region of the nozzle openings 25, 26, so a glue pressure, adjustable.

Der Leimdruck wird durch ein gemeinsames Druckregelventil 37 bestimmt. Dieses ist seitlich an ein Gehäuse des Leimaggregats 23 angesetzt und bestimmt den Leimdruck für die gesamte Leimdüse 24 bzw. für alle Düsenöffnungen 25, 26, und zwar im Bereich der Leimleitung 32. Alternativ können mehrere individuell ansteuerbare Druckregelventile (im Leimaggregat 23) eingesetzt werden, um einzelne oder Gruppen von Düsenöffnungen hinsichtlich des wirksamen Leimdrucks zu regeln. Der durch das Druckregelventil 37 bestimmt Leimdruck liegt zwischen 4 bar und maximal 20 bar.The glue pressure is determined by a common pressure control valve 37. This is attached laterally to a housing of the glue unit 23 and determines the Glue pressure for the entire glue nozzle 24 or for all nozzle openings 25, 26, and in the area of the glue line 32. Alternatively, several individually controllable Pressure regulating valves (in the glue unit 23) are used to individual or groups of nozzle openings to regulate the effective glue pressure. The glue pressure determined by the pressure control valve 37 is between 4 bar and a maximum of 20 bar.

Die Steuerung des Druckregelventils 37 erfolgt durch einen Druckluftregler 38, der über eine Druckluftleitung 39 mit einer Druckluftquelle einerseits und über eine Steuerluftleitung 40 mit dem Druckregelventil 37 andererseits verbunden ist.The pressure control valve 37 is controlled by a compressed air regulator 38 which via a compressed air line 39 with a compressed air source on the one hand and via a Control air line 40 is connected to the pressure control valve 37 on the other hand.

Eine Besonderheit ist die Einstellbarkeit des Leimdrucks durch ein Dateneingabeorgan, bei dem Ausführungsbeispiel der Fig. 3 ein PC 54. Dieser ist über eine Signalleitung 55 mit der Steuereinheit bzw. der Maschinensteuerung 31 verbunden. Ein Bildschirm 56 zeigt die eingegebenen Daten, hier anhand einer graphischen Darstellung. Der PC 54 ist darauf eingerichtet, veränderliche Vorgaben bzw. Parameter einzugeben, insbesondere die für die Verarbeitung relevanten Besonderheiten des Leims, z. B. die Viskosität. Des Weiteren kann die erwünschte Schichtdicke des Leims für die Leimbereiche auf dem Verpackungsmaterial eingegeben werden. Dabei kann über den PC der Leimdruck so eingestellt werden, dass die Leimstreifen 20 einerseits und die Leimflächen 16 andererseits unterschiedliche Schichtdicken aufweisen. Auch kann die Öffnungsdauer und der Öffnungstakt der Düsenöffnungen 25, 26 - insbesondere in Abhängigkeit von der Größe der jeweils herzustellenden Zuschnitte - in die Maschinensteuerung 31 eingegeben werden. A special feature is the adjustability of the glue pressure through a data input device, 3, a PC 54. This is via a signal line 55 connected to the control unit or the machine controller 31. A screen 56 shows the entered data, here using a graphic Presentation. The PC 54 is set up to change specifications or parameters to enter, in particular the peculiarities relevant to processing the glue, e.g. B. the viscosity. Furthermore, the desired layer thickness can of the glue for the glue areas entered on the packaging material become. The glue pressure can be set on the PC so that the Glue strips 20 on the one hand and the glue surfaces 16 on the other hand different Have layer thicknesses. The opening duration and the opening stroke of the Nozzle openings 25, 26 - in particular depending on the size of each blanks to be produced - are entered into the machine control 31.

Andere zu berücksichtigende Daten bzw. Parameter, so die jeweilige aktuelle Fördergeschwindigkeit des Verpackungsmaterials wird der Maschinensteuerung 31 anderweitig zugeführt.Other data or parameters to be taken into account, such as the respective current conveying speed of the packaging material is the machine controller 31 otherwise supplied.

Die Förderbewegung der Materialbahn 21 wird bei dem gezeigten Ausführungsbeispiel unmittelbar im Bereich der Materialbahn 41 erfasst. Zu diesem Zweck ist einem entsprechend der Fördergeschwindigkeit drehenden Organ, insbesondere einer von zwei Vorzugswalzen 42 für die Materialbahn 21, ein Abtastorgan zugeordnet, nämlich ein Resolver 43. Dieser erkennt die Bewegung der Materialbahn 21 anhand der Drehbewegung der Vorzugswalze 42. Der Resolver 43 ist über eine Signalleitung 44 ebenfalls mit der Maschinensteuerung 31 verbunden. Diese erkennt demnach den Bewegungsablauf der Materialbahn 21 bei dem (taktweisen) Vorzug. Danach wird über den Druckluftregler 38 das Druckregelventil 37 betätigt, derart, dass in der Leimdüse 24 ein der Bewegung und gegebenenfalls weiteren Parametern entsprechender Leimdruck erzeugt wird. Die erforderliche Öffnungsdauer der Düsenöffnungen 25, 26 wird in angepasster Weise durch die Ventile 29, 30 bestimmt.The conveying movement of the material web 21 is in the embodiment shown recorded directly in the area of the material web 41. For this purpose an organ rotating according to the conveying speed, in particular one of two feed rollers 42 for the material web 21, assigned a scanning element, namely a resolver 43. This detects the movement of the material web 21 based on the rotational movement of the preferred roller 42. The resolver 43 is over a Signal line 44 is also connected to the machine controller 31. This accordingly recognizes the sequence of movements of the material web 21 in the (cyclical) Preference. Then the pressure control valve 37 is actuated via the compressed air regulator 38, such that in the glue nozzle 24 one of the movement and possibly another Corresponding glue pressure is generated. The required opening time the nozzle openings 25, 26 is adapted in an adapted manner by the valves 29, 30 determined.

Die Wechselbeziehung zwischen der Fördergeschwindigkeit der Materialbahn 21 sowie weiteren Parametern einerseits und dem entsprechenden Leimdruck ist graphisch in Fig. 4 und Fig. 5 anhand von Beispielen aufgezeigt.The interrelation between the conveying speed of the material web 21 as well as other parameters on the one hand and the corresponding glue pressure shown graphically in FIGS. 4 and 5 using examples.

Fig. 4 zeigt eine horizontale Zeitachse 45 und eine vertikale Geschwindigkeitsachse 46. Die aufgezeichneten Linien 47, 48, 49 beziehen sich auf den Geschwindigkeitsverlauf bei unterschiedlichen Abmessungen (Größen) von Zuschnitten und entsprechenden Vorzugslängen sowie Fördergeschwindigkeiten der Materialbahn 21. Die Linie 47 zeigt den Geschwindigkeitsverlauf bei einem größeren Zuschnitt mit entsprechend höherer Maximalgeschwindigkeit. Die Linie 49 bezieht sich auf einen kleineren Zuschnitt mit entsprechender Bewegungscharakteristik.4 shows a horizontal time axis 45 and a vertical speed axis 46. The lines 47, 48, 49 recorded relate to the speed curve with different dimensions (sizes) of blanks and corresponding preferred lengths and conveyor speeds of the material web 21. Line 47 shows the speed curve with a larger cut with a correspondingly higher maximum speed. Line 49 refers to a smaller cut with corresponding movement characteristics.

Hierzu gehört das Diagramm gemäß Fig. 5 mit horizontaler Zeitachse 45 und vertikaler Druckachse 50. Die Linien 51, 52, 53 korrespondieren inhaltlich mit den Linien 47, 48, 49 der Fig. 4. Gezeigt ist der Druckverlauf und die Druckhöhe in Abhängigkeit von der Zeit. Jede der Linien 51, 52, 53 bzw. Kurven kann einer der Kurven bzw. Linien 47, 48, 49 des Diagramms gemäß Fig. 4 zugeordnet sein. Dies bedeutet, dass einem Arbeits- bzw. Bewegungszyklus gemäß Linie 47, also mit hoher Maximalgeschwindigkeit der Materialbahn 41 eine (Druck-/Zeit-)Linie 53 zugeordnet sein kann, also ein verhältnismäßig niedriger Druck, wenn auf Grund der eingestellten Parameter, etwa der Viskosität des Leims und/oder der erwünschten Schichtdicke ein Druckverlauf entsprechend Linie 53 angemessen ist. Weiterhin können die Kurven bzw. Linien 51, 52, 53 einen ungleichförmigen Verlauf haben, um darzustellen, dass entsprechend dem eingestellten Programm sich der Druck während eines Arbeitszyklus, also während einer Beleimungsphase, gezielt verändern kann. Unter Bezugnahme auf den Zuschnitt gemäß Fig. 1 ist eine größere Schichtdicke der Leimstreifen 20 erwünscht, weil diese die Faltung im Bereich der Stirnwände fixieren. Die Leimflächen 16 zum Verbinden der Randstreifen 14, 15 können eine geringere Schichtdicke aufweisen, weil eine ausreichende Fixierung durch die Mehrzahl der Leimflächen 16 erreichbar ist.This includes the diagram according to FIG. 5 with a horizontal time axis 45 and a vertical one Print axis 50. The lines 51, 52, 53 correspond in content to the Lines 47, 48, 49 of FIG. 4. The pressure curve and the pressure height are shown in dependence from the time. Each of the lines 51, 52, 53 or curves can be one of the Curves or lines 47, 48, 49 of the diagram according to FIG. 4 can be assigned. This means that a work or movement cycle according to line 47, i.e. with high maximum speed of the material web 41 a (pressure / time) line 53 can be assigned, i.e. a relatively low pressure if due to the set parameters, such as the viscosity of the glue and / or the desired Layer thickness a pressure curve according to line 53 is appropriate. Furthermore, the curves or lines 51, 52, 53 can have a non-uniform course to show that according to the set program the pressure during a working cycle, i.e. during a gluing phase, can specifically change. Referring to the blank of FIG. 1 a greater layer thickness of the glue strips 20 is desired because these fold fix in the area of the end walls. The glue surfaces 16 for connecting the edge strips 14, 15 can have a smaller layer thickness because of a sufficient one Fixation can be achieved by the majority of the glue surfaces 16.

Der Leimdruck wird dynamisch unter Anpassung an die aktuelle Fördergeschwindigkeit der Materialbahn geregelt. Insbesondere wird zyklisch, z.B. in Abständen von 6 ms, die Drehwinkeländerung des Resolvers 43 festgestellt und in einen Geschwindigkeitswert umgerechnet. Aus diesem wird mit einem in der Steuerung hinterlegten Algorithmus der jeweilige Druckwert errechnet, und zwar im Wesentlichen nach einer Formel p = p1 + m · v The glue pressure is regulated dynamically with adaptation to the current conveying speed of the material web. In particular, the change in the angle of rotation of the resolver 43 is determined cyclically, for example at intervals of 6 ms, and converted into a speed value. From this, the respective pressure value is calculated using an algorithm stored in the control, essentially using a formula p = p 1 + mv

Wobei p der geschwindigkeitsabhängige Leimdruck, p1 ein eingestellter Minimaldruck (Fig. 5), m ein Faktor nach Maßgabe der individuell einstellbaren Dicke der Leimschicht und v eine Zahl analog der Bahngeschwindigkeit ist. Zusätzlich können auch weitere Parameter berücksichtigt sein, nämlich unterschiedliche Schichtdicken von Leimflächen. Where p is the speed-dependent glue pressure, p 1 is a set minimum pressure (FIG. 5), m is a factor according to the individually adjustable thickness of the glue layer and v is a number analogous to the web speed. In addition, other parameters can also be taken into account, namely different layer thicknesses of glue areas.

Das dargestellte Verfahren der Leimübertragung auf Verpackungsmaterial ist auch bei Förderung einzelner, vorgefertigter Zuschnitte anwendbar. Des weiteren ist eine Anwendung bei taktweise geförderten Materialbahnen sinnvoll, wenn diese mit ungleichförmiger Geschwindigkeit laufen, z.B. beim Anfahren und Verzögern der Verpackungsmaschine. The illustrated method of transferring glue to packaging material is also applicable for the promotion of individual, pre-made cuts. Furthermore is an application with cyclically conveyed material webs makes sense if this run at non-uniform speed, e.g. when starting and decelerating the packaging machine.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

1010
Gebindepackungmultipack
1111
Vorderwandfront wall
1212
SeitenwandSide wall
1313
Rückwandrear wall
1414
Randstreifenedge strips
1515
Randstreifenedge strips
1616
Leimflächegluing surface
1717
Stirnlappenfrontal lobe
1818
Decklappencover tab
1919
Stanzschnittchad
2020
Leimstreifenglue strips
2121
Materialbahnweb
2222
Faltrevolverfolding turret
2323
Leimaggregatglue assembly
2424
Leimdüseglue nozzle
2525
Düsenöffnungnozzle opening
2626
Düsenöffnungnozzle opening
2727
Bahnabschnittweb section
2828
Andrückorganpressure member
2929
VentilValve
3030
VentilValve
3131
Maschinensteuerungmachine control
3232
Leimleitungglue line
3333
Leimbehälterglue container
3434
Leimpumpeglue pump
3535
Steuereinheitcontrol unit
3636
Signalleitungsignal line
3737
DruckregelventilPressure control valve
3838
DruckluftreglerAir Regulator
3939
DruckluftleitungCompressed air line
4040
SteuerluftleitungControl air line
4141
Signalleitungsignal line
4242
Vorzugswalzeadvancement roller
4343
Resolverresolver
4444
Signalleitungsignal line
4545
Zeitachsetimeline
4646
Geschwindigkeitsachsespeed axis
4747
Linieline
4848
Linieline
4949
Linieline
5050
Druckachsepressure axis
5151
Linieline
5252
Linieline
5353
Linieline
5454
PCPC
5555
Signalleitungsignal line
5656
Bildschirmscreen

Claims (14)

Verfahren zum Aufbringen von Leim, insbesondere des Typs hotmelt, auf während der Leimübertragung transportiertes Verpackungsmaterial, vorzugsweise auf eine fortlaufende Materialbahn zum Herstellen von Zuschnitten für Packungen, mittels Leimdüsen (24) mit verschließbaren Düsenöffnungen (25, 26); denen Leim unter Druck - Leimdruck - während einer Phase der Leimübertragung auf das Verpackungsmaterial zugeführt wird, dadurch gekennzeichnet, dass der auf den Leim wirkende Leimdruck individuell eingestellt wird nach Maßgabe der Fördergeschwindigkeit des Verpackungsmaterials bzw. der Materialbahn (21) und/oder der Viskosität des Leims und/oder einer gewünschten Schichtdicke von Leimbereichen - Leimflächen (16) bzw. Leimstreifen (20) - auf dem Verpackungsmaterial.Process for applying glue, in particular of the hotmelt type, to packaging material transported during the glue transfer, preferably to a continuous material web for producing blanks for packs, by means of glue nozzles (24) with closable nozzle openings (25, 26); which glue under pressure - glue pressure - is supplied to the packaging material during a phase of glue transfer, characterized in that the glue pressure acting on the glue is set individually in accordance with the conveying speed of the packaging material or the material web (21) and / or the viscosity of the Glue and / or a desired layer thickness of glue areas - glue surfaces (16) or glue strips (20) - on the packaging material. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass zur Herstellung von Zuschnitten mit mehreren Leimbereichen für unterschiedliche Aufgaben, insbesondere mit Leimflächen (16) zur Verbindung von Randstreifen (14, 15) des Zuschnitts und Leimstreifen (20) zur Fixierung von Faltlappen einer Stirnwand, die Leimbereiche entsprechend der Funktion durch Regeln des Leimdrucks während eines Beleimungstaktes bzw. während der Förderbewegung des Verpackungsmaterials zur Erzielung der erwünschten Schichtdicke des Leims eingestellt wird. A method according to claim 1, characterized in that for the production of blanks with a plurality of glue areas for different tasks, in particular with glue surfaces (16) for connecting edge strips (14, 15) of the blank and glue strips (20) for fixing folding flaps of an end wall Glue areas are adjusted according to the function by regulating the glue pressure during a gluing cycle or during the conveying movement of the packaging material in order to achieve the desired layer thickness of the glue. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Leimdruck und/oder Öffnungsphasen der Leimdüsen (24) bzw. Düsenöffnungen (25, 26) durch eine gemeinsame Steuereinheit gesteuert werden, insbesondere durch eine (zentrale) Maschinensteuerung (31).Method according to claim 1 or 2, characterized in that the glue pressure and / or opening phases of the glue nozzles (24) or nozzle openings (25, 26) are controlled by a common control unit, in particular by a (central) machine control (31). Verfahren nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass der Leimdruck während einer Phase der Leimübertragung bzw. während eines Arbeitstaktes verändert wird, insbesondere zur Erzeugung von Leimbereichen - Leimflächen (16), Leimstreifen (20) - mit unterschiedlicher Schichtdicke des Leims.Method according to claim 1 or one of the further claims, characterized in that the glue pressure is changed during a phase of the glue transfer or during a working cycle, in particular for producing glue areas - glue areas (16), glue strips (20) - with different layer thicknesses of the glue , Verfahren nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Bewegungscharakteristik der zu beleimenden Materialbahn (21) im Bereich einer Umlenk- bzw. Vorzugswalze (22) der Materialbahn (21) erfasst wird, vorzugsweise durch einen Resolver (43), der mit der gemeinsamen Steuereinheit verbunden ist.Method according to Claim 1 or one of the further claims, characterized in that the movement characteristic of the material web (21) to be glued is detected in the region of a deflection or feed roller (22) of the material web (21), preferably by a resolver (43), which is connected to the common control unit. Verfahren nach Anspruch 1 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Materialbahn (21) im Bereich des Leimaggregats (23) ungleichförmig, insbesondere taktweise gefördert wird, wobei die Materialbahn (21) aus dem Stillstand bis zu einer Maximalgeschwindigkeit beschleunigt, sodann gegebenenfalls mit konstanter Fördergeschwindigkeit transportiert und danach wieder bis zum Stillstand verzögert wird, wobei durch die Steuerung der Leimdruck dynamisch an die momentane Geschwindigkeit angepasst wird.Method according to Claim 1 or one of the further claims, characterized in that the material web (21) in the region of the glue unit (23) is conveyed non-uniformly, in particular intermittently , the material web (21) accelerating from standstill to a maximum speed, then optionally transported at a constant conveying speed and then decelerated to a standstill, the glue pressure being dynamically adjusted to the current speed by the control. Verfahren nach Anspruch 1 oder einem der weiteren Ansprüche, gekennzeichnet durch folgende Merkmale: a) die Fördergeschwindigkeit des Verpackungsmaterials wird zyklisch anhand einer Drehwinkeländerung des Resolvers (43) ermittelt und in einen Geschwindigkeitswert umgerechnet, b) aus dem Geschwindigkeitswert wird mit einem in der Steuerung hinterlegten Algorithmus ein angepasster Druckwert, nämlich Leimdruck, errechnet. Method according to claim 1 or one of the further claims, characterized by the following features: a) the conveying speed of the packaging material is determined cyclically on the basis of a change in the angle of rotation of the resolver (43) and converted into a speed value, b) an adjusted pressure value, namely glue pressure, is calculated from the speed value using an algorithm stored in the control. Vorrichtung zum Aufbringen von Leim, insbesondere hotmelt Leim, auf während der Leimübertragung transportiertes Verpackungsmaterial, vorzugsweise auf eine laufende Materialbahn (21) zum Herstellen von beleimten Zuschnitten, wobei das Verpackungsmaterial, insbesondere die Materialbahn (21) an einem verschließbare Düsenöffnungen (25, 26) aufweisenden Leimaggregat (23) vorbeibewegbar ist, vorzugsweise unter Anlage an Düsenöffnungen (25, 26) mindestens während der Leimübertragung, dadurch gekennzeichnet, dass auf den Leim innerhalb des Leimaggregats (23) bzw. in der Leimdüse (24) auf den Leim ausgeübter Druck, nämlich Leimdruck, nach Maßgabe der Fördergeschwindigkeit des Verpackungsmaterials bzw. der Materialbahn (21) und/oder der Viskosität des Leims und/oder der zu erzielenden Schichtdicke des Leims regelbar ist.Device for applying glue, in particular hotmelt glue, to packaging material transported during the glue transfer, preferably to a running material web (21) for producing glued blanks, the packaging material, in particular the material web (21), being closed at a closable nozzle opening (25, 26) having glue unit (23) can be moved past, preferably by contacting nozzle openings (25, 26) at least during the glue transfer, characterized in that pressure exerted on the glue within the glue unit (23) or in the glue nozzle (24) on the glue, namely glue pressure, can be regulated in accordance with the conveying speed of the packaging material or the material web (21) and / or the viscosity of the glue and / or the layer thickness of the glue to be achieved. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass das Leimaggregat (23) eine Schlitzdüse als Leimdüse (24) aufweist mit mehreren schlitzförmigen Düsenöffnungen (25, 26) die individuell bzw. in Gruppen verschließbar sind, vorzugsweise durch jeder Düsenöffnung (26) oder einer Gruppe von Düsenöffnungen (25) zugeordnete elektrisch betätigte Absperrorgane bzw. Ventile (29, 30), die mit der gemeinsamen Steuereinheit verbunden sind.Apparatus according to claim 8, characterized in that the glue unit (23) has a slit nozzle as glue nozzle (24) with a plurality of slit-shaped nozzle openings (25, 26) which can be closed individually or in groups, preferably through each nozzle opening (26) or a group electrically operated shut-off devices or valves (29, 30) associated with nozzle openings (25) and connected to the common control unit. Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Leimaggregat (23) bzw. die Leimdüse (24) durch eine Leimleitung (32) mit Leim versorgt ist, wobei in der Leimleitung (32) ein Druckregelorgan, vorzugsweise ein Druckregelventil (37) angeordnet ist, inbesondere unmittelbar am Leimaggregat (23).Apparatus according to claim 8 or 9, characterized in that the glue unit (23) or the glue nozzle (24) is supplied with glue through a glue line (32), a pressure control element, preferably a pressure control valve (37), in the glue line (32). is arranged, in particular directly on the glue unit (23). Vorrichtung nach Anspruch 10 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass das Druckregelventil (37) mittels Druckluft über einen Druckluftregler (38) regelbar ist, wobei das Druckregelventil (37) oder der Druckluftregler (38) an die gemeinsame Steuereinheit - Maschinensteuerung (31) - angeschlossen ist.Device according to claim 10 or one of the further claims, characterized in that the pressure control valve (37) can be regulated by means of compressed air via a compressed air regulator (38), the pressure control valve (37) or the compressed air regulator (38) being sent to the common control unit - machine control (31 ) - connected. Vorrichtung nach Anspruch 9 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Leimleitung (32) mit einem Leimvorrat bzw. Leimbehälter (33) verbunden ist und über eine Leimpumpe (34) mit Leim unter hohem Druck versorgt wird.Device according to claim 9 or one of the further claims, characterized in that the glue line (32) is connected to a glue supply or glue container (33) and is supplied with glue under high pressure via a glue pump (34). Vorrichtung nach Anspruch 8 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass die Fördergeschwindigkeit des Verpackungsmaterials bzw. der Materialbahn (21) im Bereich einer Umlenkwalze der Materialbahn (21), insbesondere an einer Vorzugswalze (42) abtastbar ist, insbesondere durch einen der Walze zugeordneten Resolver (43).Device according to claim 8 or one of the further claims, characterized in that the conveying speed of the packaging material or the material web (21) can be scanned in the region of a deflecting roller of the material web (21), in particular on a feed roller (42), in particular by one of the rollers assigned resolver (43). Vorrichtung nach Anspruch 8 oder einem der weiteren Ansprüche, dadurch gekennzeichnet, dass jedem Leimaggregat (23) oder einer Gruppe von Leimaggregaten ein Dateneingabeorgan zugeordnet ist, insbesondere ein PC (54), dem individuelle Parameter hinsichtlich Fördergeschwindigkeit des Verpackungsmaterials und/oder Viskosität des Leims und/oder erwünschter Schichtdicke von Leimbereichen eingebbar ist, wobei das Dateneingabeorgan bzw. der PC (54) über eine Signalleitung (55) mit der gemeinsamen Steuereinheit, insbesondere der Maschinensteuerung (31), verbunden ist.Apparatus according to claim 8 or one of the further claims, characterized in that each glue unit (23) or a group of glue units is assigned a data input element, in particular a PC (54), the individual parameters with regard to the conveying speed of the packaging material and / or viscosity of the glue and / or the desired layer thickness of glue areas can be entered, the data input device or the PC (54) being connected to the common control unit, in particular the machine control (31), via a signal line (55).
EP03029332A 2003-01-08 2003-12-19 Process and device for applying glue to packaging material Expired - Lifetime EP1437303B2 (en)

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DE10300485 2003-01-08
DE10300485 2003-01-08

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JP (1) JP4510472B2 (en)
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CN1517274A (en) 2004-08-04
JP2004210405A (en) 2004-07-29
ATE432224T1 (en) 2009-06-15
BRPI0400103A (en) 2004-12-28
EP1437303A3 (en) 2006-02-01
BRPI0400103B1 (en) 2014-12-16
EP1437303B1 (en) 2009-05-27
DE50311548D1 (en) 2009-07-09
US20040161531A1 (en) 2004-08-19
CN100393588C (en) 2008-06-11
JP4510472B2 (en) 2010-07-21
EP1437303B2 (en) 2012-12-12

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