EP0314818A1 - Plug for paper or cardboard winding tubes - Google Patents

Plug for paper or cardboard winding tubes Download PDF

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Publication number
EP0314818A1
EP0314818A1 EP87116059A EP87116059A EP0314818A1 EP 0314818 A1 EP0314818 A1 EP 0314818A1 EP 87116059 A EP87116059 A EP 87116059A EP 87116059 A EP87116059 A EP 87116059A EP 0314818 A1 EP0314818 A1 EP 0314818A1
Authority
EP
European Patent Office
Prior art keywords
bung
paper
winding
winding tubes
plug
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.)
Withdrawn
Application number
EP87116059A
Other languages
German (de)
French (fr)
Inventor
Edmund Munk
Helmuth Huber
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.)
Werzalit AG and Co KG
Original Assignee
Werzalit AG and Co KG
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 Werzalit AG and Co KG filed Critical Werzalit AG and Co KG
Priority to EP87116059A priority Critical patent/EP0314818A1/en
Priority to DE8716768U priority patent/DE8716768U1/de
Priority to US07/173,155 priority patent/US4977930A/en
Publication of EP0314818A1 publication Critical patent/EP0314818A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/185—End caps, plugs or adapters

Definitions

  • the application relates to an essentially circular symmetrical, hollow cylindrical bung for winding cores made of paper or cardboard which is produced in one piece as a molded part from a mixture of fibers and a thermosetting binder and which has a constant diameter over approximately the outer half of its total length, the inside remaining length of which is conical and the surface of which is provided with a plurality of longitudinally extending caterpillar thickenings distributed over the circumference.
  • the winding sleeves are preferably winding sleeves made of paper, cardboard and / or cardboard for paper, cardboard and cardboard in accordance with DIN 6748. After the material to be wound has been wound onto the winding sleeves, the winding material rolls of removed from the winding device and then the bung is driven in before the winding material rolls are transported to the packaging devices.
  • the end faces of the winding material rolls are first covered with circular disks, for example made of cardboard, by the packaging devices and then the circumference of the winding material rolls is wrapped in paper in a packaging machine.
  • the circular discs are fastened to the bung with clips.
  • the invention is therefore based on the object of improving the bung mentioned at the outset in a technically and economically manner in such a way that further driving in of the same is reliably prevented when the disks are attached.
  • This object is achieved in that the outer edge of the bung, starting at about 90% of the total length, is provided with a steadily increasing thickening.
  • the bung is a circularly symmetrical, hollow cylindrical body 1 which has a constant outer diameter over at least half its length. This part merges into a conical part 2, which comes the furthest inwards when the bung is used.
  • the caterpillar-shaped thickenings 3 are arranged on the surface of the bung, which are provided for tolerance compensation and for increasing the friction between the bung and the winding tube.
  • the bung shown in FIG. 1 has, for example, four thickenings evenly distributed around the circumference. At the extreme end of the sheet pile, the diameter of the sheet increases steadily. This slight thickening 7, which can be implemented with little effort, counteracts the driving force of the bung with the required resistance.
  • FIG. 2 The use of the bung according to FIG. 1 is illustrated in FIG. 2.
  • the winding tube 5 is wound with the winding material 6, for example a very large number of paper turns.
  • the bung 7 is driven, on which the disc 8 is fastened by means of clips.
  • the non-rising mixture from which the bung is to be made usually consists of lignocellulosic fibrous materials, such as shredded and dried wood chips, bagasse fibers and the like, which are mixed with a thermosetting synthetic resin, such as a melamine-urea-formaldehyde or phenol-formaldehyde resin.
  • a thermosetting synthetic resin such as a melamine-urea-formaldehyde or phenol-formaldehyde resin.
  • fibers of other materials such as glass fibers, rock wool or asbestos fibers, alone or several of them mixed with one another, to which corresponding, preferably organic, binders have been added can also be used.

Abstract

Plugs are inserted into the ends of rolls for wound material, for example paper webs wound onto winding tubes. These plugs, which can be pressed, for example, in one piece as a moulding consisting of a mixture of fibres and a heat-curing binder, also have packing parts fixed to them. <??>To make it impossible for the plugs to be pushed, in an undesired manner, further than intended into the winding tubes, the outer edge of the plug is provided with a continuously increasing thickened region. <IMAGE>

Description

Die Anmeldung betrifft einen einstückig als Formpreßteil aus einem Gemisch con Fasern und einem wärmehärtenden Binde­mittel hergestellten, im wesentlichen kreissymmetrischen, hohl­zylindrischen Spund für Wickelhülsen aus Papier oder Karton, welcher auf etwa der äußeren Hälfte seiner Gesamtlänge einen konstanten Durchmesser aufweist, dessen innenliegende Rest­länge konisch ausgebildet und dessen Oberfläche mit mehreren auf dem Umfang verteilten längslaufenden raupenförmigen Verdickungen versehen ist.The application relates to an essentially circular symmetrical, hollow cylindrical bung for winding cores made of paper or cardboard which is produced in one piece as a molded part from a mixture of fibers and a thermosetting binder and which has a constant diameter over approximately the outer half of its total length, the inside remaining length of which is conical and the surface of which is provided with a plurality of longitudinally extending caterpillar thickenings distributed over the circumference.

Ein solcher Spund ist bekannt ( Prospekt : " Formgepreßte Spunde für Aufwickelhülsen " der Fa. Werzalit AG + Co., Unternehmensbereich Industrieprodukte, 7141 Oberstenfeld ). Diese bekannten Spunde haben sich im praktischen Einsatz in sehr großer Zahl bewährt. Bei den Aufwickelhülsen, bei denen die bekannten Spunde eingesetzt werden, handelt es sich vorzugsweise um Aufwickelhülsen aus Papier, Karton und/oder Pappe für Papier, Karton und Pappe gemäß DIN 6748. Nachdem das Wickelgut auf die Aufwickelhülsen aufgewickelt worden ist, werden die Wickelgutrollen von der Wickelvorrichtung abgenom­men und anschließend die Spunde eingetrieben, bevor die Wickel­gutrollen zu den Verpackungscorrichtungen transportiert werden.Such a bung is known (prospectus: "Molded bung for take-up cores" from Werzalit AG + Co., Industrial Products division, 7141 Oberstenfeld). These known bung have proven themselves in large numbers in practical use. The winding sleeves, in which the known bungles are used, are preferably winding sleeves made of paper, cardboard and / or cardboard for paper, cardboard and cardboard in accordance with DIN 6748. After the material to be wound has been wound onto the winding sleeves, the winding material rolls of removed from the winding device and then the bung is driven in before the winding material rolls are transported to the packaging devices.

Von den Verpackungsvorrichtungen werden zunächst die Stirn­flächen der Wickelgutrollen mit kreisförmigen Scheiben, beispiels­weise aus Pappe, bedeckt und danach der Umfang der Wickel­gutrollen in einer Verpackungsmaschine mit Papier umwickelt. Die kreisförmigen Scheiben werden mittels Klammern an den Spunden befestigt.The end faces of the winding material rolls are first covered with circular disks, for example made of cardboard, by the packaging devices and then the circumference of the winding material rolls is wrapped in paper in a packaging machine. The circular discs are fastened to the bung with clips.

Wenn sich die Toleranzen des Außendurchmessers des Spundes und/oder des Innendurchmessers der Aufwickelhülse zum Negativen hin addieren, kann es vorkommen, daß der Spund beim Befestigen der kreisförmigen Scheiben durch die erforder­liche relativ große Eintriebskraft für die Klammern nochmals um eine bestimmte Länge in die Aufwickelhülse hineingetrieben wird.If the tolerances of the outside diameter of the bung and / or the inside diameter of the winding sleeve add up to the negative, it can happen that the bung when the circular disks are fastened again by a certain length into the winding sleeve by the required relatively large driving force for the clips becomes.

Das führt aber zu der nachteiligen Wirkung, daß die Scheibe nicht mehr bündig auf der Stirnseite der Wickelgutrolle aufliegt, sondern - vorzugsweise an ihrem äußeren Rand - konkav ver­formt wird. Das hat aber zur Folge, daß der Rand der Scheibe in der Verpackungseinrichtung, in welcher das Umwickeln der Wickelgutrollen selbsttätig durchgeführt wird, nicht mehr erfaßt wird und die Verpackung daher fehlerhaft ist.However, this leads to the disadvantageous effect that the disc no longer lies flush on the end face of the roll of winding material, but rather is deformed concavely — preferably on its outer edge. However, this has the consequence that the edge of the disc in the packaging device, in which the winding of the rolls of winding material is carried out automatically, is no longer detected and the packaging is therefore defective.

Der Erfindung liegt daher die Aufgabe zugrunde, den eingangs erwähnten Spund in technisch un wirtschaftlicher Weise derart zu verbessern, daß ein weitergehendes Eintreiben desselben beim Befestigen der Scheiben sicher verhindert wird.The invention is therefore based on the object of improving the bung mentioned at the outset in a technically and economically manner in such a way that further driving in of the same is reliably prevented when the disks are attached.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß der äußere Rand des Spundes, bei etwa 90% der Gesamtlänge beginnend, mit einer sich stetig vergrößernden Verdickung versehen ist.This object is achieved in that the outer edge of the bung, starting at about 90% of the total length, is provided with a steadily increasing thickening.

Durch diese technische Lösung ist einerseits sichergestellt, daß der Spund so weit in die Wickelhülse eingetrieben werden kann, daß seine Außenfläche nicht über die Stirnfläche des Wickelgutes vorsteht und auch die Wickelhülse nicht unzulässig verformt wird, aber andererseits zuverlässig ein weiteres Eintreiben des Spundes in die Wickelhülse beim Befestigen der Scheiben verhindert wird.This technical solution ensures on the one hand that the bung can be driven so far into the winding tube that its outer surface does not over the end face of the Projecting material protrudes and the winding tube is not deformed inadmissibly, but on the other hand reliably prevents the bung from being driven further into the winding tube when the disks are attached.

Die Erfindung ist nachstehend anhand der Figuren 1 und 2 näher erläutert. Es zeigen :

  • Fig. 1 den Querschnitt durch den erfindungs­gemäßen Spund und
  • Fig. 2 den Ausschnitt aus einer Wickelgut­rolle, welche einen Spund gemäß Fig. 1 enthält.
The invention is explained in more detail below with reference to FIGS. 1 and 2. Show it :
  • Fig. 1 shows the cross section through the bung according to the invention and
  • Fig. 2 shows the detail of a roll of winding material, which contains a bung according to FIG. 1.

Wie aus Fig. 1 ersichtlich, ist der Spund ein kreissymmetri­scher, hohlzylindrischer Körper 1, der auf mindestens der Hälfte seiner Länge einen konstanten Außendurchmesser auf­weist. Dieser Teil geht in einen konischen Teil 2 über, welcher beim Einsatz des Spundes am weitesten nach innen zu liegen kommt. Auf der Oberfläche des Spundes sind die raupenförmi­gen Verdickungen 3 angeordnet, welche zum Toleranzausgleich und zur Erhöhung der Reibung zwischen Spund und Wickelhülse vorgesehen sind. Der in Fig. 1 gezeigten Spund besitzt bei­spielsweise vier gleichmäßig am Umfang verteilte Verdickungen. Am äußerstenden Ende des Spundrandes nimmt der Durchmesser des Spundes stetig zu. Diese geringfügige und ohne großen Aufwand zu verwirklichende Verdickung 7 setzt der Eintriebs­kraft des Spundes den erforderlichen Widerstand entgegen.As can be seen from FIG. 1, the bung is a circularly symmetrical, hollow cylindrical body 1 which has a constant outer diameter over at least half its length. This part merges into a conical part 2, which comes the furthest inwards when the bung is used. The caterpillar-shaped thickenings 3 are arranged on the surface of the bung, which are provided for tolerance compensation and for increasing the friction between the bung and the winding tube. The bung shown in FIG. 1 has, for example, four thickenings evenly distributed around the circumference. At the extreme end of the sheet pile, the diameter of the sheet increases steadily. This slight thickening 7, which can be implemented with little effort, counteracts the driving force of the bung with the required resistance.

In Fig. 2 ist der Einsatz des Spundes gemäß Fig. 1 verdeut­licht. Die Wickelhülse 5 ist mit dem Wickelgut 6, beispiels­weise einer sehr großen Anzahl von Papierwindungen bewickelt. In das Ende der Wickelhülse 5 ist der Spund 7 eingetrieben, auf welchem mittels Klammern die Scheibe 8 befestigt ist.The use of the bung according to FIG. 1 is illustrated in FIG. 2. The winding tube 5 is wound with the winding material 6, for example a very large number of paper turns. In the end of the winding tube 5, the bung 7 is driven, on which the disc 8 is fastened by means of clips.

Das nicht steigfähige Gemisch, aus welchem der Spund herstellt sein soll, besteht meist aus lignozellulosehaltigen Faserstoffen, wie zerkleinerten und getrockneten Holzspänen, Bagassefasern u.ä., die mit einem wärmehärtbaren Kunstharz, wie einem Melamin-Harnstofformaldehyd- oder Phenolformaldehydharz vermischt sind. Anstelleder zerkleinerten und getrockneten Holz- oder Bagassefasern können aber auch Fasern anderer Werkstoffe, wie Glasfasern, Steinwolle oder Asbestfasern, allein oder mehrere derselben miteinander gemischt, verwendet werden, denen entsprechende, vorzugsweise organische, Bindemittel zugesetzt sind.The non-rising mixture from which the bung is to be made usually consists of lignocellulosic fibrous materials, such as shredded and dried wood chips, bagasse fibers and the like, which are mixed with a thermosetting synthetic resin, such as a melamine-urea-formaldehyde or phenol-formaldehyde resin. Instead of the shredded and dried wood or bagasse fibers, fibers of other materials, such as glass fibers, rock wool or asbestos fibers, alone or several of them mixed with one another, to which corresponding, preferably organic, binders have been added can also be used.

Claims (1)

Einstückig als Formpreßteil aus einem Gemisch von Fasern und einem wärmehärtenden Bindemittel hergestellter, im wesentlichen kreissymmetrischer, hohlzylindrischer Spund für Wickelhülsen aud Papier oder Karton, welcher auf etwa der äußeren Hälfte seiner Gesamtlänge einen konstan­ten Durchmesser aufweist, dessen innenliegende Restlänge konisch ausgebildet und dessen Oberfläche mit mehreren auf dem Umfang verteilten längslaufenden raupenförmigen Verdickungen versehen ist,
dadurch gekennzeichnet, daß der äußere Rand des Spundes, bei etwa 90% der Gesamtlänge beginnend, mit einer sich stetig vergrößernden Verdickung ( 4 ) versehen ist.Made in one piece as a molded part from a mixture of fibers and a thermosetting binder, essentially circularly symmetrical, hollow cylindrical bung for winding cores on paper or cardboard, which has a constant diameter over approximately the outer half of its total length, the inside remaining length of which is conical and the surface with several is provided on the circumference distributed longitudinal caterpillar thickenings,
characterized in that the outer edge of the bung, starting at about 90% of the total length, is provided with a continuously increasing thickening (4).
EP87116059A 1987-10-31 1987-10-31 Plug for paper or cardboard winding tubes Withdrawn EP0314818A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP87116059A EP0314818A1 (en) 1987-10-31 1987-10-31 Plug for paper or cardboard winding tubes
DE8716768U DE8716768U1 (en) 1987-10-31 1987-12-21
US07/173,155 US4977930A (en) 1987-10-31 1988-03-24 Plug for wrapped sleeves of paper or cardboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87116059A EP0314818A1 (en) 1987-10-31 1987-10-31 Plug for paper or cardboard winding tubes

Publications (1)

Publication Number Publication Date
EP0314818A1 true EP0314818A1 (en) 1989-05-10

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ID=8197410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116059A Withdrawn EP0314818A1 (en) 1987-10-31 1987-10-31 Plug for paper or cardboard winding tubes

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US (1) US4977930A (en)
EP (1) EP0314818A1 (en)
DE (1) DE8716768U1 (en)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
NO914097L (en) * 1991-10-18 1993-04-19 Per Tybring Aralt DEVICE BY LIFTING PAPER ROLLS
US5513820A (en) * 1993-11-15 1996-05-07 Meyer Plastics, Inc. Core plug apparatus
US5377831A (en) * 1993-12-21 1995-01-03 Westvaco Corporation Core or tube plug and roll assembly therewith
SE502768C2 (en) * 1994-03-29 1996-01-08 Ulvator Ab Metal-free disposable drum for an elongated flexible object
US6243931B1 (en) 1998-09-15 2001-06-12 Batesville Services, Inc. Casket lid and method and making same
US6849141B2 (en) 1998-09-15 2005-02-01 Batesville Services, Inc. Casket lid and method of making same
US6164588A (en) * 1999-03-08 2000-12-26 Wood Composite Technologies, Inc. Reel assembly
US7967235B2 (en) * 2006-10-03 2011-06-28 Sca Tissue North America Llc Dispenser that automatically transfers rolls of absorbent material, method of reloading same, and rolls of absorbent material for use in same
US20080164369A1 (en) * 2007-01-06 2008-07-10 Olufemi Adelakun Core for roll paper products
GB202017800D0 (en) * 2020-08-10 2020-12-23 Kimberly Clark Co Dispenser systems

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985292A (en) * 1959-09-14 1961-05-23 Beaudoin Andre Core plug
US3115969A (en) * 1960-09-29 1963-12-31 Beaudoin Andre Core plug
GB952433A (en) * 1962-11-23 1964-03-18 Joenkoeping Vulcan Ab Wooden plugs for inserting in the ends of tubes
US3865326A (en) * 1973-10-09 1975-02-11 Andre Beaudoin Core plug
GB2100227A (en) * 1981-06-04 1982-12-22 Westvaco Corp Core end protector
US4460087A (en) * 1982-09-30 1984-07-17 Westvaco Corporation Core plug
EP0170718A1 (en) * 1984-08-10 1986-02-12 Werzalit - Werke J.F. Werz KG Deformation safety for heavy rolls

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA586556A (en) * 1959-11-10 Beaudoin Andre Peg for hollow axle ends
US3547367A (en) * 1969-04-23 1970-12-15 Don Laverne Brazeale Paper roll plug
US3567146A (en) * 1969-06-02 1971-03-02 Us Caster Corp End core for rolls of paper
US3627220A (en) * 1970-02-09 1971-12-14 Poly Guard Inc Protective end cap construction
US3840194A (en) * 1972-03-09 1974-10-08 Uniflex Core plug
US4279275A (en) * 1979-08-06 1981-07-21 Ford Aerospace & Communications Corporation Mechanical joinder of composite shaft to metallic end members
US4372500A (en) * 1981-02-18 1983-02-08 Alfred Saraisky Inserts for use with web dispensing means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985292A (en) * 1959-09-14 1961-05-23 Beaudoin Andre Core plug
US3115969A (en) * 1960-09-29 1963-12-31 Beaudoin Andre Core plug
GB952433A (en) * 1962-11-23 1964-03-18 Joenkoeping Vulcan Ab Wooden plugs for inserting in the ends of tubes
US3865326A (en) * 1973-10-09 1975-02-11 Andre Beaudoin Core plug
GB2100227A (en) * 1981-06-04 1982-12-22 Westvaco Corp Core end protector
US4460087A (en) * 1982-09-30 1984-07-17 Westvaco Corporation Core plug
EP0170718A1 (en) * 1984-08-10 1986-02-12 Werzalit - Werke J.F. Werz KG Deformation safety for heavy rolls

Also Published As

Publication number Publication date
DE8716768U1 (en) 1988-02-18
US4977930A (en) 1990-12-18

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