EP0081100B1 - Device for intermittently applying an adhesive - Google Patents

Device for intermittently applying an adhesive Download PDF

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Publication number
EP0081100B1
EP0081100B1 EP82110501A EP82110501A EP0081100B1 EP 0081100 B1 EP0081100 B1 EP 0081100B1 EP 82110501 A EP82110501 A EP 82110501A EP 82110501 A EP82110501 A EP 82110501A EP 0081100 B1 EP0081100 B1 EP 0081100B1
Authority
EP
European Patent Office
Prior art keywords
glue
bore
nozzle
glue nozzle
adhesive
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.)
Expired
Application number
EP82110501A
Other languages
German (de)
French (fr)
Other versions
EP0081100A2 (en
EP0081100A3 (en
Inventor
Manfred Langenbach
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.)
Maschinenfabrik Alfred Schmermund GmbH and Co
Original Assignee
Maschinenfabrik Alfred Schmermund GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Alfred Schmermund GmbH and Co filed Critical Maschinenfabrik Alfred Schmermund GmbH and Co
Publication of EP0081100A2 publication Critical patent/EP0081100A2/en
Publication of EP0081100A3 publication Critical patent/EP0081100A3/en
Application granted granted Critical
Publication of EP0081100B1 publication Critical patent/EP0081100B1/en
Expired legal-status Critical Current

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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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
    • B05C5/0229—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet the valve being a gate valve or a sliding valve
    • B05C5/0233—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet the valve being a gate valve or a sliding valve rotating valve, e.g. rotating perforated cylinder
    • 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
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • 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
    • B31B50/622—Applying glue on already formed boxes

Definitions

  • the invention relates to a device for the intermittent application of adhesive to moving material, in particular packaging material, with a lockable glue nozzle and a step-shaped recess arranged adjacent to it, which is located behind the glue nozzle in the transport direction of the material.
  • DE-B-1 274 864 provides for the glue nozzle to be closed in a time of less than 1/100 sec, as a result of which the thread formation is to be reliably prevented.
  • this procedure is difficult to carry out in packaging machines which operate at different speeds, since the fast closing can only be carried out mechanically on the one hand, but should be carried out synchronously with the machine on the other hand.
  • a device of the type mentioned is known from DE-A-2709935, according to which the adhesive located in the glue nozzle is sucked back when the glue nozzle is closed. However, it has been shown that this cannot reliably prevent thread formation.
  • the object of the invention is to provide a device of the type mentioned at the outset with which undesired gluing of packaging blanks can be reliably avoided.
  • This object is achieved in that a hole is made in the recess behind the glue nozzle and is connected to a vacuum source.
  • the bore can be connected to the vacuum source via a control member such that the vacuum is applied to the bore as soon as the glue nozzle is shut off.
  • the bore can also be permanently connected to the vacuum source.
  • the device comprises a nozzle body 1, in which a glue nozzle 2 is arranged, which is connected to a glue supply 4 by a valve 3.
  • the glue nozzle 2 is shown closed here.
  • a glue bead 7 has been formed on a packaging blank 6 moved in the direction of the arrow 5, and a glue thread 8 has also formed between the glue bead 7 and the glue nozzle 2.
  • the nozzle body 1 is now designed such that there is a step-shaped recess 9 directly behind the glue nozzle 2 (seen in the transport direction of the packaging blank 6).
  • the recess 9 opens a bore 10 which is connected to a vacuum source, not shown, so that the glue thread 8 is sucked in.
  • the bore 10 can either be connected when the valve 3 is closed or can be permanently connected to the vacuum source, the second option having proven to be the simplest solution but also fully functional.

Description

Die Erfindung betrifft eine Vorichtung zum intermittierenden Auftragen von Klebstoff auf bewegtes Material, insbesondere Verpackungsmaterial, mit einer absperrbaren Leimdüse und einer hierzu benachbart angeordneten, stufenförmigen Ausnehmung, die sich in Transportrichtung des Materials hinter der Leimdüse befindet.The invention relates to a device for the intermittent application of adhesive to moving material, in particular packaging material, with a lockable glue nozzle and a step-shaped recess arranged adjacent to it, which is located behind the glue nozzle in the transport direction of the material.

In Verpackungsmaschinen, welche aus einzelnen Zuschnitten Verpackungen formen, müssen diese Zuschnitte mit scharf begrenzten Streifen von Klebstoff versehen werden. Dies geschieht entweder mit Leimwalzen oder, insbesondere zum Auftragen von Heißschmelzklebern, mit Leimdüsen. Letztere Methode hat jedoch den Nachteil, daß nach dem Absperren des Leimflusses durch Schließen der Leimdüse zwischen dieser und der auf den Verpackungszuschnitt aufgebrachten Leimraupe bei bestimmten Leimsorten Fäden gezogen werden, welche sich auf den Verpackungszuschnitt legen und so für eine unerwünschte Beleimung sorgen.In packaging machines that form packaging from individual blanks, these blanks must be provided with sharply delimited strips of adhesive. This is done either with glue rollers or, especially for the application of hot melt adhesives, with glue nozzles. However, the latter method has the disadvantage that after the glue flow has been shut off, by closing the glue nozzle, threads are drawn between the glue nozzle and the glue bead applied to the packaging blank, which threads lie on the packaging blank and thus ensure undesired gluing.

Um diese Fadenbildung zu verhindern, ist es nach der DE-B-1 274 864 vorgesehen, die Leimdüse in einer Zeit von weniger als 1/100 sec zu verschließen, wodurch die Fadenbildung zuverlässig unterbunden werden soll. Dieses Vorgehen ist aber in Verpackungsmaschinen, die mit unterschiedlichen Geschwindigkeiten arbeiten, schwierig durchzuführen, da das schnelle Schließen einerseits nur mechanisch ausführbar ist, andererseits aber synchron mit der Maschine erfolgen soll.In order to prevent this thread formation, DE-B-1 274 864 provides for the glue nozzle to be closed in a time of less than 1/100 sec, as a result of which the thread formation is to be reliably prevented. However, this procedure is difficult to carry out in packaging machines which operate at different speeds, since the fast closing can only be carried out mechanically on the one hand, but should be carried out synchronously with the machine on the other hand.

Eine Vorrichtung der eingangs genannten Art ist aus der DE-A-2709935 bekannt, gemäß der beim Schließen der Leimdüse der in dieser befindliche Klebstoff zurückgesaugt wird. Es hat sich jedoch gezeigt, daß hierdurch eine Fadenbildung nicht zuverlässig verhindert werden kann.A device of the type mentioned is known from DE-A-2709935, according to which the adhesive located in the glue nozzle is sucked back when the glue nozzle is closed. However, it has been shown that this cannot reliably prevent thread formation.

Ferner ist es aus der US-A-3 943 527 bekannt, bei einer mit Flüssigkeit arbeitenden Markiervorrichtung Flüssigkeit von einer Austrittsöffnung über eine umgebende Leitung zurückzusaugen, damit sich an der Austrittsöffnung keine Tropfen ausbilden können. Dies entspricht im wesentlichen dem bei der DE-A-2 709 935 verwirklichten Prinzip.Furthermore, it is known from US Pat. No. 3,943,527 to draw back liquid from an outlet opening via a surrounding line in a marking device operating with liquid, so that no drops can form at the outlet opening. This corresponds essentially to the principle implemented in DE-A-2 709 935.

Aufgabe der Erfindung ist es, eine Vorrichtung der eingangs genannten Art zu schaffen, mit der zuverlässig unerwünschte Beleimungen von Verpakkungszuschnitten vermieden werden.The object of the invention is to provide a device of the type mentioned at the outset with which undesired gluing of packaging blanks can be reliably avoided.

Diese Aufgabe wird dadurch gelöst, daß in der Ausnehmung hinter der Leimdüse eine Bohrung angebracht ist, welche mit einer Unterdruckquelle verbunden ist.This object is achieved in that a hole is made in the recess behind the glue nozzle and is connected to a vacuum source.

Hierbei wird ausgenutzt, daß eine Fadenbildung nicht unbedingt verhindert werden muß, solange sichergestellt ist, daß der Leimfaden nicht auf den Verpackungszuschnitt oder auf Maschinenteile gelangt, mit denen dieser in Berührung kommt. Die Bohrung kann über ein Steuerorgan mit der Unterdruckquelle derart verbunden sein, daß die Bohrung mit dem Unterdruck beaufschlagt wird, sobald die Leimdüse abgesperrt wird. Die Bohrung kann auch ständig mit der Unterdruckquelle verbunden sein.This takes advantage of the fact that thread formation does not necessarily have to be prevented as long as it is ensured that the glue thread does not get onto the packaging blank or onto machine parts with which it comes into contact. The bore can be connected to the vacuum source via a control member such that the vacuum is applied to the bore as soon as the glue nozzle is shut off. The bore can also be permanently connected to the vacuum source.

Die Erfindung wird nachstehend anhand des in der beigefügten Abbildung dargestellten Ausführungsbeispiels näher erläutert, die einen Querschnitt durch eine Beleimvorrichtung in schematisierter Darstellung zeigt.The invention is explained below with reference to the embodiment shown in the accompanying figure, which shows a cross section through a gluing device in a schematic representation.

Die Vorrichtung umfaßt einen Düsenkörper 1, in dem eine Leimdüse 2 angeordnet ist, welche durch ein Ventil 3 mit einer Leimzufuhr 4 verbunden ist. Die Leimdüse 2 ist hier geschlossen dargestellt.The device comprises a nozzle body 1, in which a glue nozzle 2 is arranged, which is connected to a glue supply 4 by a valve 3. The glue nozzle 2 is shown closed here.

Auf einem in Richtung des Pfeiles 5 bewegten Verpackungszuschnitt 6 ist eine Leimraupe 7 gebildet worden, außerdem hat sich zwischen der Leimraupe 7 und der Leimdüse 2 ein Leimfaden 8 gebildet. Nun ist der Düsenkörper 1 so ausgebildet, daß sich direkt hinter der Leimdüse 2 (in Transportrichtung des Verpackungszuschnitts 6 gesehen) eine stufenförmige Ausnehmung 9 befindet. In der Ausnehmung 9 mündet eine Bohrung 10, welche mit einer nicht dargestellten Unterdruckquelle verbunden ist, so daß der Leimfaden 8 eingesaugt wird. Die Bohrung 10 kann entweder beim Schließen des Ventils 3 oder aber ständig mit der Unterdruckquelle verbunden sein, wobei sich die zweite Möglichkeit als einfachste Lösung, aber auch als voll funktionsfähig erwiesen hat.A glue bead 7 has been formed on a packaging blank 6 moved in the direction of the arrow 5, and a glue thread 8 has also formed between the glue bead 7 and the glue nozzle 2. The nozzle body 1 is now designed such that there is a step-shaped recess 9 directly behind the glue nozzle 2 (seen in the transport direction of the packaging blank 6). In the recess 9 opens a bore 10 which is connected to a vacuum source, not shown, so that the glue thread 8 is sucked in. The bore 10 can either be connected when the valve 3 is closed or can be permanently connected to the vacuum source, the second option having proven to be the simplest solution but also fully functional.

Claims (3)

1. Apparatus for intermittently applying adhesive to moving material (6) especially packaging material, with a glue nozzle (2) which is capable of being cut off, and a step-shaped recess (9) arranged adjacent to the nozzle, which recess is located behind the glue nozzle (2) in the transport direction of the material (6), characterised in that a bore (10), which is connected with a negative pressure source, is provided in the recess (9).
2. Apparatus according to claim 1, characterised in that the bore (10) is connected with the negative pressure source via a control member in such a manner that the bore (10) is coupled with the vacuum as soon as the glue nozzle (2) is cut off.
3. Apparatus according to claim 1, characterised in that the bore (10) is permanently connected with the negative pressure source.
EP82110501A 1981-12-04 1982-11-13 Device for intermittently applying an adhesive Expired EP0081100B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3148037A DE3148037C2 (en) 1981-12-04 1981-12-04 Device for intermittent application of adhesive
DE3148037 1981-12-04

Publications (3)

Publication Number Publication Date
EP0081100A2 EP0081100A2 (en) 1983-06-15
EP0081100A3 EP0081100A3 (en) 1985-01-16
EP0081100B1 true EP0081100B1 (en) 1987-03-25

Family

ID=6147897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110501A Expired EP0081100B1 (en) 1981-12-04 1982-11-13 Device for intermittently applying an adhesive

Country Status (7)

Country Link
US (1) US4461236A (en)
EP (1) EP0081100B1 (en)
JP (1) JPS58104665A (en)
CS (1) CS245779B2 (en)
DD (1) DD206945A5 (en)
DE (2) DE3148037C2 (en)
SU (1) SU1118277A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10330751A1 (en) * 2003-07-07 2005-02-10 Windmöller & Hölscher Kg Floor laying device for paper sacks

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735260A1 (en) * 1987-10-17 1989-04-27 Bosch Gmbh Robert SEALING DEVICE FOR TWO-PIECE CAPSULES
US5360516A (en) * 1992-11-12 1994-11-01 Philip Morris Incorporated Application of fluidized material to a substrate using intermittent charges of compressed air
ITBO940257A1 (en) * 1994-06-02 1995-12-02 Gd Spa FLUID SUBSTANCES DISPENSING DEVICE.
JP3200763B2 (en) * 1997-02-04 2001-08-20 株式会社ヒラノテクシード Double side coating type coating equipment
DE19714029C2 (en) * 1997-04-04 1999-06-10 Bargen Rudolf Von Application head
FR2765191B1 (en) * 1997-06-26 1999-08-20 Cermex METHOD AND MACHINE FOR AUTOMATICALLY BONDING A HEAT SHRINKABLE PLASTIC FILM ON THE BOTTOM OF AN OPEN BODY
DE10309893B4 (en) * 2002-09-13 2019-05-23 Windmöller & Hölscher Kg Floor sorter for paper sacks and method for operating a floor sorter
CN101952175B (en) * 2008-02-26 2012-02-01 西得乐控股和技术公司 Vacuum drum for labelling machines
DE102011082631B4 (en) * 2011-09-13 2017-04-27 VW-VM Forschungsgesellschaft mbH & Co. KG Intermittent coating of moving surfaces
DE102012217683B3 (en) 2012-09-27 2014-02-20 Volkswagen Varta Microbattery Forschungsgesellschaft Mbh & Co. Kg Switchable slit valve for a coating system, coating system and use of the system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274864B (en) * 1966-02-24 1968-08-08 Henkel & Cie Gmbh Process for the intermittent application of thread-spinning thermoplastic adhesive
IL31504A0 (en) * 1968-08-07 1969-03-27 Weyerhaeuser Co Adhesive applicator apparatus for box-forming machines
JPS50122539A (en) * 1974-03-13 1975-09-26
US3943527A (en) * 1975-06-04 1976-03-09 Rca Corporation Noncontacting marker
GB1578018A (en) * 1976-03-11 1980-10-29 Schmermund A Glue applications
FR2372904A1 (en) * 1976-11-19 1978-06-30 Ibm STRIPPING COMPOSITION OF POLYCRYSTALLINE SILICON CONTAINING TETRAMETHYLAMMONIUM HYDROXIDE AND APPLICATION METHOD
DD137788A3 (en) * 1978-05-17 1979-09-26 Eckerhard Pruefer METHOD AND DEVICE FOR RETHATING EDGES
JPS552474U (en) * 1979-03-22 1980-01-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10330751A1 (en) * 2003-07-07 2005-02-10 Windmöller & Hölscher Kg Floor laying device for paper sacks

Also Published As

Publication number Publication date
DD206945A5 (en) 1984-02-15
DE3148037A1 (en) 1983-06-09
JPH0220310B2 (en) 1990-05-08
JPS58104665A (en) 1983-06-22
EP0081100A2 (en) 1983-06-15
EP0081100A3 (en) 1985-01-16
SU1118277A3 (en) 1984-10-07
DE3148037C2 (en) 1983-10-27
US4461236A (en) 1984-07-24
CS245779B2 (en) 1986-10-16
DE3275821D1 (en) 1987-04-30

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