EP1072515A1 - Device for unrolling a band in a tying machine - Google Patents

Device for unrolling a band in a tying machine Download PDF

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Publication number
EP1072515A1
EP1072515A1 EP00111786A EP00111786A EP1072515A1 EP 1072515 A1 EP1072515 A1 EP 1072515A1 EP 00111786 A EP00111786 A EP 00111786A EP 00111786 A EP00111786 A EP 00111786A EP 1072515 A1 EP1072515 A1 EP 1072515A1
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EP
European Patent Office
Prior art keywords
tape
supply reel
tape supply
unwinding device
roller
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
EP00111786A
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German (de)
French (fr)
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EP1072515B1 (en
Inventor
Charles Fischer
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.)
Strapex Holding GmbH
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Strapex Holding GmbH
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Publication date
Application filed by Strapex Holding GmbH filed Critical Strapex Holding GmbH
Publication of EP1072515A1 publication Critical patent/EP1072515A1/en
Application granted granted Critical
Publication of EP1072515B1 publication Critical patent/EP1072515B1/en
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    • 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
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • 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
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/184—Strap accumulators

Definitions

  • the invention relates to an unwinding device for a strapping machine for unwinding tape from a tape supply reel.
  • a relatively small tape supply spool is clamped between two rolling flanges, with each other via a threaded shaft with an assigned nut are connected.
  • the rolling flanges stand on two rollers, one of which one is powered.
  • the unwound tape is in one box-shaped reservoir fed from which the strapping machine pulls off the tape.
  • the tape supply is unordered in the storage container, and the belt fed backwards by the strapping machine lies freely in the Room. Sidewalls are provided that are significantly lower than that Roll flanges are. Apart from a reduced leadership effect thus there is also a certain risk of accident after unintentional touching of the rotating parts cannot be excluded.
  • the aim of the invention is to provide an improved unwinding device at the beginning to create the type mentioned, in which the aforementioned disadvantages are eliminated.
  • This object is achieved according to the invention by at least two in Circumferential direction of the tape supply spool, on which the tape supply reel with its respective outer circumference rests, at least for driving the tape supply reel the downstream bearing roller is drivable.
  • the downstream bearing roller is advantageously with a Provide rubber jacket. With such a rubber jacket on the downstream bearing roller can be especially in a drive Both bearing rollers are prevented from band sections between these form a belly on both rollers. Due to the increased friction between the rubber jacket and the tape supply reel is downstream located bearing roller determining the drive. This is particularly the case Case when the upstream bearing roller has a surface steel, for example, so that this upstream bearing roller primarily used for storage. It is therefore particularly also conceivable that only the downstream bearing roller is driven.
  • the unwinder expediently comprises two fixed Sidewalls, preferably about the same height as the tape supply reel own and between those to be lowered onto the bearing rollers Tape supply reel is insertable.
  • the side walls give the tape supply spool the desired stability. It is also conceivable that the tape supply reel is rolled onto the bearing rollers between the side walls.
  • the side walls can be provided with recesses which are open at the top be up to the range of one in particular by a hollow cylindrical Core defined central cavity of the tape supply reel pass. This is the central cavity when the tape supply reel is removed accessible to, for example, a carrier tape with which the tape supply reel was previously attached to a crane to be able to remove.
  • the unwinder comprises a tape buffer, via which the from the tape supply reel unwound tape fed to the strapping machine and tensioned is held. After the tape through the tape cache is always kept taut, is excluded from the strapping machine backward conveyor belt is free in the room.
  • the drive of the tape supply reel is expediently dependent of the respective state of the tape buffer or that in the tape buffer stored amount of tape material controllable. In order to can be prevented, for example, from further unwinding of tape, after the tape feed stops in the area of the strapping machine has been.
  • At least one weight lever is provided to the tape supply reel resting on the storage rollers down to the storage rollers to strain. This ensures that against the end of the stock towards becoming ever lighter tape reel or the remaining core does not jump off the bearing rollers.
  • the weight lever can be pivoted, for example, on the fixed side walls be stored.
  • the tape unwound from the tape supply reel is expedient generally led up to the tape buffer.
  • Unwinding device comprises the tape buffer in the manner of a Pulley at least two pulleys over which the unwound Band is guided to form a band reserve, at least a stationary upper pulley and at least one in a vertical one Lower deflection roller displaceable are provided.
  • the lower deflection roller can in particular on a slide be mounted along a slide guide in the vertical direction is movable.
  • the drive of the tape supply reel is advantageously dependent from the vertical position of the lower pulley or carriage controllable.
  • This drive of the tape supply reel is expedient controlled so that it is switched on when the lower pulley or the carriage assumes a predeterminable position or itself located above this, and is off when the lower pulley or the carriage is below this predeterminable position located.
  • At least one sensor To monitor the vertical position of the lower pulley or of the carriage is expediently provided at least one sensor.
  • at least one of the slide guides can preferably assigned vertically adjustable sensor can be provided.
  • the peripheral speed of the at least one is preferably driven Bearing roller at least substantially equal to the speed, with which the tape is drawn into the strapping machine. At activated drive of the tape supply reel is thus prevented more strap material is supplied than is required by the strapping machine becomes.
  • FIGS. 1 to 4 show a unwinding device in a purely schematic representation 10 for a strapping machine 12 (see FIG. 4) for unwinding a tape 14 of plastic, for example a tape supply reel 16.
  • the tape supply reel 16 has a hollow cylindrical one Core 18, which can consist of hard cardboard, for example, and on which the tape supply is wound.
  • large tape supply reels such as so-called jumbo coils with up to about 4000 m wound up Plastic strap used.
  • the unwinding device 10 comprises at least two in the circumferential direction the tape supply reel 16 bearing rollers 20, 22, one behind the other which the tape supply reel 16 directly with their respective outer circumference lies on.
  • both bearing rollers 20, 22 are with driven at the same peripheral speed.
  • the downstream one Bearing roller 22 is provided with a rubber jacket 24, however the surface of the upstream bearing roller 20 is made of steel.
  • the downstream bearing roller 22 for the tape supply reel 16 determines the drive, while the upstream located bearing roller 20 serves primarily for storage. So it is in particular also conceivable that only the downstream bearing roller 22 is driven.
  • the present embodiment via an electric drive motor 26 first the upstream bearing roller 20 and over this the downstream bearing roller 22 driven.
  • the unwinder 10 also includes two fixed, for example made of sheet metal side walls 28, which are preferably approximately the same Height as the tape supply reel 16 can have. In the present Fall these side walls 28 protrude slightly above the tape supply reel 16 beyond.
  • the tape supply reel 16 is interposed, for example, by means of a crane the side walls 28 inserted and lowered onto the two bearing rollers 20, 22.
  • the side walls are 28 provided with recesses 30 which are open at the top and which to the area defined by the hollow cylindrical core 18 central cavity 32 of the tape supply reel 16 are sufficient.
  • the central cavity 32 is thus accessible to For example, a carrier tape with which the tape supply reel 16 on the crane was fixed to be able to remove again.
  • the Tape supply reel 16 is loaded by a weight lever 34, which ensures that the tape supply reel, which becomes increasingly lighter towards the end of the supply 16 or the remaining core 18 not from the bearing rollers 20, 22 jumps off.
  • the weight lever 34 is pivotable at one end 34 'on the fixed Side walls 28 stored. At its other, free end is 34 '' it is provided with rollers 36, over which it rests on the tape supply reel 16.
  • the tape 14 unwound from the tape supply reel 16 is over the Tape supply reel 16 obliquely upwards to a tape buffer 38 out, via which the unwound from the tape supply reel 16 Band 14 of the strapping machine 12 fed and kept tensioned is (see in particular Figure 4).
  • this is the electric motor 26 comprehensive drive of the tape supply reel 16 via a corresponding Control depending on the current state of the tape buffer 38 or the amount stored in the tape buffer 38 controllable on tape material.
  • the tape buffer 38 comprises a Pulley at least two pulleys 40, 42, through which the unwound Volume 14 forming a band reserve 44 (cf. in particular Figure 4) is guided, with at least one stationary upper guide roller 40 and at least one displaceable in the vertical direction lower deflection roller 42 are provided.
  • the lower deflection rollers 42 are mounted on a slide 46, which can be displaced in the vertical direction along a slide guide 48 is.
  • the band 14 is corresponding to the formation of the band reserve 44 guided upper and lower pulleys 40 and 42, respectively.
  • the tape Starting from the tape supply reel 16, the tape initially runs on one the upper pulleys 40. Finally, the tape 14 runs off again one of the upper deflection rollers 40 to a stationary lower roller 50 in order to be fed via this to the strapping machine 12.
  • the drive of the web supply spool 16 comprising the electric motor 26 is in the present case depending on the vertical position of the lower one Deflection rollers 42 and the carriage 46 can be controlled.
  • this Drive of the tape supply reel 16 can be controlled so that it is switched on, if the lower deflection rollers 42 or the slide 46 are a predeterminable one Take position or be above it and switched off is when the lower deflection rollers 42 or the carriage 46 are below are in this predeterminable position.
  • At least one, preferably assigned to the slide guide 48, can be used vertically adjustable sensor 52 may be provided (cf. in particular Figures 1 and 4). Via the height-adjustable sensor 52 can thus the drive of the bearing rollers 20, 22 and thus the tape supply reel 16 can be controlled accordingly, for which the sensor 52 with the already mentioned control can be connected.
  • the electric motor 26 drives the tape supply reel 16. These are located below the detection area of the sensor 52, the drive motor 26 is switched off.
  • the peripheral speed of the driven bearing rollers 20, 22 and so that the unwinding speed of the tape 14 preferably corresponds at least approximately the speed at which the belt 14 into the Strapping machine 12 is pulled.
  • the stationary one lower roller 50 to be mounted on the slide guide 48.
  • the band 14 is following the stationary lower Roll 50 via a deflection unit 54 a strapping unit 56 of the Strapping machine 12 fed.
  • the strapping machine 12 or their strapping unit 56 is a strap insertion and tensioning unit 60 comprises that with a tensioning device 62 for final tensioning of the band 14, for example made of plastic, is provided.
  • a tensioning device 62 for final tensioning of the band 14, for example made of plastic is provided in the The area of a guide channel 64 . It is designed to coming from the unwinding device 10 and through the tensioning device 62 passed band 14 in a direction opposite to the tensioning direction S. Feed direction by a clamping and locking unit 68 through and with the free band end 14 'ahead in a guide frame 70 to shoot until the tape end 14 'at a stop in the clamping and sealing assembly 68.
  • the guide frame 70 runs around the strapping material 72.
  • the conveyor roller pair 66 destined for that which is led around the strapping 72 and by means of a first band clamping unit 74 of the clamping and closing unit 68 at a distance from the stop at the stop Pulling tape end 14 'of clamped tape 14 back in tensioning direction S, until it has put on the strapping 72.
  • the clamping and closing assembly 68 has a second band clamping unit 74 'and between the belt clamping units 74 and 74' a welding unit 76 on.
  • the Tensioning device 62 in operation, whereby the band 14 is gripped and opened the predetermined clamping force is tensioned.
  • the band 14 in the tensioning direction seen severed downstream of the weld.
  • the operation of the unwinder 10 is as follows:
  • the unwinding speed is from Tape supply reel 16 is always the same regardless of its diameter, which is achieved in that the tape supply reel 16 immediately on the bearing rollers 20, 22 rests.
  • the heavy large tape supply spools of about 70 kg, for example, are easy to handle, and it can be one extraordinarily large tape supply can be provided.
  • the control effort is minimal.
  • Through the rubber jacket 24 on the downstream located bearing roller 22 is prevented that tape sections between form the two bearing rollers 20, 22 a belly.
  • the side walls 28 give the tape supply reel 16 the desired stability.
  • the tape supply reel 16 can, for example, between the side walls 28 on the bearing rollers 20, 22 can be rolled.
  • the unwinding speed is expediently always kept constant, i.e. the electric motor is always operated at the same speed.
  • the feeding speed in the area of the strapping machine can basically also larger or smaller than the unwinding speed his.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Abstract

The arrangement has at least two storage rollers (20,22) arranged in series in the peripheral direction of the tape storage spool (16). The tape storage spool contacts the rollers with its outer tape periphery, whereby at least the downstream storage roller (22) is driven to drive the tape storage spool.

Description

Die Erfindung betrifft eine Abwickelvorrichtung für eine Umreifungsmaschine zum Abwickeln von Band von einer Bandvorratsspule.The invention relates to an unwinding device for a strapping machine for unwinding tape from a tape supply reel.

Mit einer solchen Abwickelvorrichtung wird die betreffende Umreifungsmaschine mit dem Bandmaterial versorgt, das in dieser zum Umspannen eines jeweiligen Umreifungsgutes benötigt wird.With such an unwinder, the strapping machine in question supplied with the strip material that can be reclamped in this of a respective strapping material is required.

Bei einer bekannten Abwickelvorrichtung der eingangs genannten Art ist eine relativ kleine Bandvorratsspule zwischen zwei Rollflanschen eingeklemmt, die über einen Gewindeschaft mit zugeordneter Mutter miteinander verbunden sind. Die Rollflansche stehen auf zwei Walzen, von denen eine angetrieben ist. Demzufolge nimmt die pro Zeiteinheit abgewickelte Bandlänge bei konstanter Antriebsgeschwindigkeit mit kleiner werdender Vorratsbandspule entsprechend ab. Das abgewickelte Band wird in einen kastenförmigen Vorratsbehälter gespeist, von dem die Umreifungsmaschine das Band abzieht. Der Bandvorrat liegt ungeordnet im Vorratsbehälter, und von der Umreifungsmaschine rückwärts gefördertes Band liegt frei im Raum. Es sind Seitenwände vorgesehen, die deutlich niedriger als die Rollflansche sind. Abgesehen von einer reduzierten Führungswirkung besteht somit auch eine gewisse Unfallgefahr, nachdem ein ungewolltes Berühren der drehenden Teile nicht ausgeschlossen werden kann. In a known unwinding device of the type mentioned a relatively small tape supply spool is clamped between two rolling flanges, with each other via a threaded shaft with an assigned nut are connected. The rolling flanges stand on two rollers, one of which one is powered. As a result, the amount processed per unit of time increases Belt length at constant drive speed with decreasing Supply reel accordingly. The unwound tape is in one box-shaped reservoir fed from which the strapping machine pulls off the tape. The tape supply is unordered in the storage container, and the belt fed backwards by the strapping machine lies freely in the Room. Sidewalls are provided that are significantly lower than that Roll flanges are. Apart from a reduced leadership effect thus there is also a certain risk of accident after unintentional touching of the rotating parts cannot be excluded.

Ziel der Erfindung ist es, eine verbesserte Abwickelvorrichtung der eingangs genannten Art zu schaffen, bei der die zuvor genannten Nachteile beseitigt sind.The aim of the invention is to provide an improved unwinding device at the beginning to create the type mentioned, in which the aforementioned disadvantages are eliminated.

Diese Aufgabe wird nach der Erfindung gelöst durch wenigstens zwei in Umfangsrichtung der Bandvorratsspule hintereinander liegende Lagerwalzen, auf denen die Bandvorratsspule mit ihrem jeweiligen Bandaußenumfang aufliegt, wobei zum Antreiben der Bandvorratsspule zumindest die stromabwärts gelegene Lagerwalze antreibbar ist.This object is achieved according to the invention by at least two in Circumferential direction of the tape supply spool, on which the tape supply reel with its respective outer circumference rests, at least for driving the tape supply reel the downstream bearing roller is drivable.

Aufgrund dieser Ausbildung können insbesondere auch größere Bandvorratsspulen verwendet werden. Da die Bandvorratsspule mit ihrem jeweiligen Bandaußenumfang unmittelbar auf den Lagerwalzen aufliegt, ist bei konstanter Drehzahl des Antriebs die Abwickelgeschwindigkeit ab der Bandvorratsspule unabhängig von deren Durchmesser stets gleich. Selbst schwerere größere Bandvorratsspulen sind einfach handhabbar. Mit den betreffenden Spulen kann ein außerordentlich großer Bandvorrat bereitgestellt werden. Der erforderliche Steuerungsaufwand ist minimal.Due to this design, larger tape supply reels can in particular be used. Because the tape supply reel with their respective The outer circumference of the belt lies directly on the bearing rollers constant speed of the drive the unwinding speed from the Tape supply spool always the same regardless of its diameter. Self heavier, larger tape supply reels are easy to handle. With the an extremely large supply of tapes can be provided become. The required control effort is minimal.

Die stromabwärts gelegene Lagerwalze ist zweckmäßigerweise mit einem Gummimantel versehen. Durch einen solchen Gummimantel auf der stromabwärts gelegenen Lagerwalze kann insbesondere bei einem Antrieb beider Lagerwalzen verhindert werden, daß Bandabschnitte zwischen diesen beiden Walzen einen Bauch bilden. Durch die erhöhte Friktion zwischen dem Gummimantel und der Bandvorratsspule ist die stromabwärts gelegene Lagerwalze antriebsbestimmend. Dies ist insbesondere dann der Fall, wenn die stromaufwärts gelegene Lagerwalze eine Oberfläche aus beispielsweise Stahl besitzt, so daß diese stromaufwärts gelegene Lagerwalze in erster Linie der Lagerung dient. Es ist somit insbesondere auch denkbar, daß nur die stromabwärts gelegene Lagerwalze angetrieben ist.The downstream bearing roller is advantageously with a Provide rubber jacket. With such a rubber jacket on the downstream bearing roller can be especially in a drive Both bearing rollers are prevented from band sections between these form a belly on both rollers. Due to the increased friction between the rubber jacket and the tape supply reel is downstream located bearing roller determining the drive. This is particularly the case Case when the upstream bearing roller has a surface steel, for example, so that this upstream bearing roller primarily used for storage. It is therefore particularly also conceivable that only the downstream bearing roller is driven.

Die Abwickelvorrichtung umfaßt zweckmäßigerweise zwei feststehende Seitenwände, die vorzugsweise etwa die gleiche Höhe wie die Bandvorratsspule besitzen und zwischen die die auf die Lagerwalzen abzusenkende Bandvorratsspule einführbar ist. Die Seitenwände geben der Bandvorratsspule die gewünschte Stabilität. Es ist auch denkbar, daß die Bandvorratsspule zwischen die Seitenwände auf die Lagerwalzen gerollt wird.The unwinder expediently comprises two fixed Sidewalls, preferably about the same height as the tape supply reel own and between those to be lowered onto the bearing rollers Tape supply reel is insertable. The side walls give the tape supply spool the desired stability. It is also conceivable that the tape supply reel is rolled onto the bearing rollers between the side walls.

Die Seitenwände können mit nach oben hin offenen Ausnehmungen versehen sein, die bis in den Bereich eines insbesondere durch einen hohlzylindrischen Kern definierten zentralen Hohlraums der Bandvorratsspule reichen. Damit ist bei abgesetzter Bandvorratsspule deren zentraler Hohlraum zugänglich, um beispielsweise ein Tragband, mit dem die Bandvorratsspule zuvor an einem Kran befestigt war, wieder entfernen zu können.The side walls can be provided with recesses which are open at the top be up to the range of one in particular by a hollow cylindrical Core defined central cavity of the tape supply reel pass. This is the central cavity when the tape supply reel is removed accessible to, for example, a carrier tape with which the tape supply reel was previously attached to a crane to be able to remove.

Bei einer bevorzugten praktischen Ausführungsform umfaßt die Abwickelvorrichtung einen Bandzwischenspeicher, über den das von der Bandvorratsspule abgewickelte Band der Umreifungsmaschine zugeführt und gespannt gehalten wird. Nachdem das Band durch den Bandzwischenspeicher stets gespannt gehalten ist, ist ausgeschlossen, daß von der Umreifungsmaschine rückwärts gefördertes Band frei im Raum liegt.In a preferred practical embodiment, the unwinder comprises a tape buffer, via which the from the tape supply reel unwound tape fed to the strapping machine and tensioned is held. After the tape through the tape cache is always kept taut, is excluded from the strapping machine backward conveyor belt is free in the room.

Der Antrieb der Bandvorratsspule ist zweckmäßigerweise in Abhängigkeit vom jeweiligen Zustand des Bandzwischenspeichers bzw. der im Bandzwischenspeicher gespeicherten Menge an Bandmaterial ansteuerbar. Damit kann beispielsweise verhindert werden, daß weiter Band abgewickelt wird, nachdem der Bandeinzug im Bereich der Umreifungsmaschine gestoppt wurde.The drive of the tape supply reel is expediently dependent of the respective state of the tape buffer or that in the tape buffer stored amount of tape material controllable. In order to can be prevented, for example, from further unwinding of tape, after the tape feed stops in the area of the strapping machine has been.

Vorteilhafterweise ist wenigstens ein Gewichtshebel vorgesehen, um die auf den Lagerwalzen aufliegende Bandvorratsspule nach unten zu den Lagerwalzen hin zu belasten. Damit ist sichergestellt, daß die gegen das Vorratsende hin immer leichter werdende Bandvorratsspule bzw. der noch verbleibende Kern nicht von den Lagerwalzen abspringt. Der Gewichtshebel kann beispielsweise schwenkbar an den feststehenden Seitenwänden gelagert sein.Advantageously, at least one weight lever is provided to the tape supply reel resting on the storage rollers down to the storage rollers to strain. This ensures that against the end of the stock towards becoming ever lighter tape reel or the remaining core does not jump off the bearing rollers. The weight lever can be pivoted, for example, on the fixed side walls be stored.

Das von der Bandvorratsspule abgewickelte Band ist zweckmäßigerweise allgemein nach oben zu dem Bandzwischenspeicher geführt.The tape unwound from the tape supply reel is expedient generally led up to the tape buffer.

Bei einer bevorzugten praktischen Ausführungsform der erfindungsgemäßen Abwickelvorrichtung umfaßt der Bandzwischenspeicher nach Art eines Flaschenzuges wenigstens zwei Umlenkrollen, über die das abgewickelte Band unter Bildung einer Bandreserve geführt ist, wobei wenigstens eine ortsfest gelagerte obere Umlenkrolle und wenigstens eine in vertikaler Richtung verschiebbare untere Umlenkrolle vorgesehen sind.In a preferred practical embodiment of the invention Unwinding device comprises the tape buffer in the manner of a Pulley at least two pulleys over which the unwound Band is guided to form a band reserve, at least a stationary upper pulley and at least one in a vertical one Lower deflection roller displaceable are provided.

Dabei kann die untere Umlenkrolle insbesondere an einem Schlitten montiert sein, der entlang einer Schlittenführung in vertikaler Richtung verschiebbar ist.The lower deflection roller can in particular on a slide be mounted along a slide guide in the vertical direction is movable.

Der Antrieb der Bandvorratsspule ist vorteilhafterweise in Abhängigkeit von der vertikalen Position der unteren Umlenkrolle bzw. des Schlittens ansteuerbar. Dabei ist dieser Antrieb der Bandvorratsspule zweckmäßigerweise so angesteuert, daß er eingeschaltet ist, wenn die untere Umlenkrolle bzw. der Schlitten eine vorgebbare Position einnimmt oder sich oberhalb dieser befindet, und ausgeschaltet ist, wenn die untere Umlenkrolle bzw. der Schlitten sich unterhalb dieser vorgebbaren Position befindet.The drive of the tape supply reel is advantageously dependent from the vertical position of the lower pulley or carriage controllable. This drive of the tape supply reel is expedient controlled so that it is switched on when the lower pulley or the carriage assumes a predeterminable position or itself located above this, and is off when the lower pulley or the carriage is below this predeterminable position located.

Zur Überwachung der vertikalen Position der unteren Umlenkrolle bzw. des Schlittens ist zweckmäßigerweise wenigstens ein Sensor vorgesehen. Dabei kann insbesondere wenigstens ein vorzugsweise der Schlittenführung zugeordneter vertikal verstellbarer Sensor vorgesehen sein.To monitor the vertical position of the lower pulley or of the carriage is expediently provided at least one sensor. In particular, at least one of the slide guides can preferably assigned vertically adjustable sensor can be provided.

Vorzugsweise ist die Umfangsgeschwindigkeit der wenigstens einen angetriebenen Lagerwalze zumindest im wesentlichen gleich der Geschwindigkeit, mit der das Band in die Umreifungsmaschine eingezogen wird. Bei eingeschaltetem Antrieb der Bandvorratsspule wird somit verhindert, daß mehr Bandmaterial geliefert wird, als von der Umreifungsmaschine benötigt wird.The peripheral speed of the at least one is preferably driven Bearing roller at least substantially equal to the speed, with which the tape is drawn into the strapping machine. At activated drive of the tape supply reel is thus prevented more strap material is supplied than is required by the strapping machine becomes.

Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert; in dieser zeigen:

Figur 1
eine schematische Seitenansicht einer Abwickelvorrichtung,
Figur 2
eine schematische Stirnansicht der Abwickelvorrichtung in Richtung des Pfeiles F der Figur 1,
Figur 3
eine schematische Draufsicht der Abwickelvorrichtung ohne Bandvorratsspule und
Figur 4
eine schematische Seitenansicht einer Umreifungsmaschine mit zugeordneter Abwickelvorrichtung.
The invention is explained below using an exemplary embodiment with reference to the drawing; in this show:
Figure 1
1 shows a schematic side view of an unwinding device,
Figure 2
2 shows a schematic end view of the unwinding device in the direction of arrow F in FIG. 1,
Figure 3
a schematic plan view of the unwinder without tape supply reel and
Figure 4
is a schematic side view of a strapping machine with an associated unwinder.

Die Figuren 1 bis 4 zeigen in rein schematischer Darstellung eine Abwikkelvorrichtung 10 für eine Umreifungsmaschine 12 (vgl. Figur 4) zum Abwickeln eines beispielsweise aus Kunststoff bestehenden Bandes 14 von einer Bandvorratsspule 16.FIGS. 1 to 4 show a unwinding device in a purely schematic representation 10 for a strapping machine 12 (see FIG. 4) for unwinding a tape 14 of plastic, for example a tape supply reel 16.

Die Bandvorratsspule 16 weist im vorliegenden Fall einen hohlzylindrischen Kern 18 auf, der beispielsweise aus Hartkarton bestehen kann und auf den der Bandvorrat aufgewickelt ist.In the present case, the tape supply reel 16 has a hollow cylindrical one Core 18, which can consist of hard cardboard, for example, and on which the tape supply is wound.

Beim vorliegenden Ausführungsbeispiel werden große Bandvorratsspulen wie beispielsweise sogenannte Jumbo-coils mit bis zu etwa 4000 m aufgewickeltem Kunststoffband verwendet.In the present embodiment, large tape supply reels such as so-called jumbo coils with up to about 4000 m wound up Plastic strap used.

Die Abwickelvorrichtung 10 umfaßt wenigstens zwei in Umfangsrichtung der Bandvorratsspule 16 hintereinander liegende Lagerwalzen 20, 22, auf denen die Bandvorratsspule 16 unmittelbar mit ihrem jeweiligen Bandaußenumfang aufliegt.The unwinding device 10 comprises at least two in the circumferential direction the tape supply reel 16 bearing rollers 20, 22, one behind the other which the tape supply reel 16 directly with their respective outer circumference lies on.

Beim dargestellten Ausführungsbeispiel sind beide Lagerwalzen 20, 22 mit gleicher Umfangsgeschwindigkeit angetrieben. Die stromabwärts gelegene Lagerwalze 22 ist jedoch mit einem Gummimantel 24 versehen, während die Oberfläche der stromaufwärts gelegenen Lagerwalze 20 aus Stahl besteht. Durch die im Vergleich zur Friktion zwischen dem Stahlmantel und der Bandvorratsspule 16 erhöhte Friktion zwischen dem Gummimantel 24 und der Vorratsspule 16 ist die stromabwärts gelegene Lagerwalze 22 für die Bandvorratsspule 16 antriebsbestimmend, während die stromaufwärts gelegene Lagerwalze 20 in erster Linie der Lagerung dient. Es ist somit insbesondere auch denkbar, daß nur die stromabwärts gelegene Lagerwalze 22 angetrieben ist.In the illustrated embodiment, both bearing rollers 20, 22 are with driven at the same peripheral speed. The downstream one Bearing roller 22 is provided with a rubber jacket 24, however the surface of the upstream bearing roller 20 is made of steel. By compared to the friction between the steel jacket and the tape supply reel 16 increased friction between the rubber jacket 24 and the supply spool 16 is the downstream bearing roller 22 for the tape supply reel 16 determines the drive, while the upstream located bearing roller 20 serves primarily for storage. So it is in particular also conceivable that only the downstream bearing roller 22 is driven.

Wie insbesondere anhand der Figuren 1 und 3 zu erkennen ist, wird beim vorliegenden Ausführungsbeispiel über einen elektrischen Antriebsmotor 26 zunächst die stromaufwärts gelegene Lagerwalze 20 und über diese die stromabwärts gelegene Lagerwalze 22 angetrieben.As can be seen in particular from FIGS. 1 and 3, the present embodiment via an electric drive motor 26 first the upstream bearing roller 20 and over this the downstream bearing roller 22 driven.

Die Abwickelvorrichtung 10 umfaßt überdies zwei feststehende, beispielsweise aus Blech gefertigte Seitenwände 28, die vorzugsweise etwa die gleiche Höhe wie die Bandvorratsspule 16 besitzen können. Im vorliegenden Fall ragen diese Seitenwände 28 nach oben etwas über die Bandvorratsspule 16 hinaus.The unwinder 10 also includes two fixed, for example made of sheet metal side walls 28, which are preferably approximately the same Height as the tape supply reel 16 can have. In the present Fall these side walls 28 protrude slightly above the tape supply reel 16 beyond.

Die Bandvorratsspule 16 wird beispielsweise mittels eines Krans zwischen die Seitenwände 28 eingeführt und auf die beiden Lagerwalzen 20, 22 abgesenkt.The tape supply reel 16 is interposed, for example, by means of a crane the side walls 28 inserted and lowered onto the two bearing rollers 20, 22.

Wie am besten anhand der Figuren 1 und 4 zu erkennen ist, sind die Seitenwände 28 mit nach oben hin offenen Ausnehmungen 30 versehen, die bis in den Bereich des durch den hohlzylindrischen Kern 18 definierten zentralen Hohlraums 32 der Bandvorratsspule 16 reichen. Bei abgesetzter Bandvorratsspule 16 ist der zentrale Hohlraum 32 somit zugänglich, um beispielsweise ein Tragband, mit dem die Bandvorratsspule 16 am Kran befestigt war, wieder entfernen zu können. Im Anschluß daran wird die Bandvorratsspule 16 durch einen Gewichtshebel 34 belastet, der sicherstellt, daß die gegen das Vorratsende hin immer leichter werdende Bandvorratsspule 16 bzw. der noch verbleibende Kern 18 nicht von den Lagerwalzen 20, 22 abspringt.As can best be seen from FIGS. 1 and 4, the side walls are 28 provided with recesses 30 which are open at the top and which to the area defined by the hollow cylindrical core 18 central cavity 32 of the tape supply reel 16 are sufficient. When settled Tape supply reel 16, the central cavity 32 is thus accessible to For example, a carrier tape with which the tape supply reel 16 on the crane was fixed to be able to remove again. Following this, the Tape supply reel 16 is loaded by a weight lever 34, which ensures that the tape supply reel, which becomes increasingly lighter towards the end of the supply 16 or the remaining core 18 not from the bearing rollers 20, 22 jumps off.

Der Gewichtshebel 34 ist am einen Ende 34' schwenkbar an den feststehenden Seitenwänden 28 gelagert. An seinem anderen, freien Ende 34'' ist er mit Rollen 36 versehen, über die er auf der Bandvorratsspule 16 aufliegt.The weight lever 34 is pivotable at one end 34 'on the fixed Side walls 28 stored. At its other, free end is 34 '' it is provided with rollers 36, over which it rests on the tape supply reel 16.

Das von der Bandvorratsspule 16 abgewickelte Band 14 ist über die Bandvorratsspule 16 hinweg schräg nach oben zu einem Bandzwischenspeicher 38 geführt, über den das von der Bandvorratsspule 16 abgewickelte Band 14 der Umreifungsmaschine 12 zugeführt und gespannt gehalten wird (vgl. insbesondere Figur 4).The tape 14 unwound from the tape supply reel 16 is over the Tape supply reel 16 obliquely upwards to a tape buffer 38 out, via which the unwound from the tape supply reel 16 Band 14 of the strapping machine 12 fed and kept tensioned is (see in particular Figure 4).

Wie weiter unten noch näher beschrieben wird, ist der den Elektromotor 26 umfassende Antrieb der Bandvorratsspule 16 über eine entsprechende Steuerung in Abhängigkeit vom jeweiligen Zustand des Bandzwischenspeichers 38 bzw. der im Bandzwischenspeicher 38 gespeicherten Menge an Bandmaterial ansteuerbar.As will be described in more detail below, this is the electric motor 26 comprehensive drive of the tape supply reel 16 via a corresponding Control depending on the current state of the tape buffer 38 or the amount stored in the tape buffer 38 controllable on tape material.

Im vorliegenden Fall umfaßt der Bandzwischenspeicher 38 nach Art eines Flaschenzuges wenigstens zwei Umlenkrollen 40, 42, über die das abgewickelte Band 14 unter Bildung einer Bandreserve 44 (vgl. insbesondere Figur 4) geführt ist, wobei wenigstens eine ortsfest gelagerte obere Umlenkrolle 40 und wenigstens eine in vertikaler Richtung verschiebbare untere Umlenkrolle 42 vorgesehen sind. Im vorliegenden Fall sind vier ortsfest und gleichachsig gelagerte obere Umlenkrollen 40 und drei vertikal verschiebbare, gleichachsig gelagerte untere Umlenkrollen 42 vorgesehen. Die unteren Umlenkrollen 42 sind an einem Schlitten 46 montiert, der entlang einer Schlittenführung 48 in vertikaler Richtung verschiebbar ist. Das Band 14 ist zur Bildung der Bandreserve 44 entsprechend um die oberen und unteren Umlenkrollen 40 bzw. 42 geführt.In the present case, the tape buffer 38 comprises a Pulley at least two pulleys 40, 42, through which the unwound Volume 14 forming a band reserve 44 (cf. in particular Figure 4) is guided, with at least one stationary upper guide roller 40 and at least one displaceable in the vertical direction lower deflection roller 42 are provided. In the present case there are four stationary and coaxial upper pulleys 40 and three vertically Slidable, coaxial lower pulleys 42 are provided. The lower deflection rollers 42 are mounted on a slide 46, which can be displaced in the vertical direction along a slide guide 48 is. The band 14 is corresponding to the formation of the band reserve 44 guided upper and lower pulleys 40 and 42, respectively.

Ausgehend von der Bandvorratsspule 16 läuft das Band zunächst auf eine der oberen Umlenkrollen 40 auf. Schließlich läuft das Band 14 wieder von einer der oberen Umlenkrollen 40 zu einer stationären unteren Rolle 50, um über diese der Umreifungsmaschine 12 zugeführt zu werden.Starting from the tape supply reel 16, the tape initially runs on one the upper pulleys 40. Finally, the tape 14 runs off again one of the upper deflection rollers 40 to a stationary lower roller 50 in order to be fed via this to the strapping machine 12.

Der den Elektromotor 26 umfassende Antrieb der Bahnvorratsspule 16 ist im vorliegenden Fall in Abhängigkeit von der vertikalen Position der unteren Umlenkrollen 42 bzw. des Schlittens 46 ansteuerbar. Dabei ist dieser Antrieb der Bandvorratsspule 16 so ansteuerbar, daß er eingeschaltet ist, wenn die unteren Umlenkrollen 42 bzw. der Schlitten 46 eine vorgebbare Position einnehmen oder sich oberhalb dieser befinden, und ausgeschaltet ist, wenn die unteren Umlenkrollen 42 bzw. der Schlitten 46 sich unterhalb dieser vorgebbaren Position befinden.The drive of the web supply spool 16 comprising the electric motor 26 is in the present case depending on the vertical position of the lower one Deflection rollers 42 and the carriage 46 can be controlled. Here is this Drive of the tape supply reel 16 can be controlled so that it is switched on, if the lower deflection rollers 42 or the slide 46 are a predeterminable one Take position or be above it and switched off is when the lower deflection rollers 42 or the carriage 46 are below are in this predeterminable position.

Dazu kann wenigstens ein vorzugsweise der Schlittenführung 48 zugeordneter vertikal verstellbarer Sensor 52 vorgesehen sein (vgl. insbesondere die Figuren 1 und 4). Über den in der Höhe verstellbaren Sensor 52 kann somit der Antrieb der Lagerwalzen 20, 22 und damit der Bandvorratsspule 16 entsprechend gesteuert werden, wozu der Sensor 52 mit der bereits erwähnten Steuerung verbunden sein kann. For this purpose, at least one, preferably assigned to the slide guide 48, can be used vertically adjustable sensor 52 may be provided (cf. in particular Figures 1 and 4). Via the height-adjustable sensor 52 can thus the drive of the bearing rollers 20, 22 and thus the tape supply reel 16 can be controlled accordingly, for which the sensor 52 with the already mentioned control can be connected.

Befinden sich die unteren Umlenkrollen 42 bzw. der Schlitten 46 beim Sensor 52 oder oberhalb dieses Sensors 52, so treibt der Elektromotor 26 die Bandvorratsspule 16 an. Befinden diese sich unterhalb des Erfassungsbereichs des Sensors 52, so ist der Antriebsmotor 26 abgeschaltet. Die Umfangsgeschwindigkeit der angetriebenen Lagerwalzen 20, 22 und damit die Abwickelgeschwindigkeit des Bandes 14 entspricht vorzugsweise zumindest annähernd der Geschwindigkeit, mit der das Band 14 in die Umreifungsmaschine 12 eingezogen wird.Are the lower pulleys 42 and the carriage 46 at Sensor 52 or above this sensor 52, the electric motor 26 drives the tape supply reel 16. These are located below the detection area of the sensor 52, the drive motor 26 is switched off. The peripheral speed of the driven bearing rollers 20, 22 and so that the unwinding speed of the tape 14 preferably corresponds at least approximately the speed at which the belt 14 into the Strapping machine 12 is pulled.

Wie insbesondere anhand der Figur 4 zu erkennen ist, kann die stationäre untere Rolle 50 an der Schlittenführung 48 gelagert sein.As can be seen in particular from FIG. 4, the stationary one lower roller 50 to be mounted on the slide guide 48.

Gemäß Figur 4 wird das Band 14 im Anschluß an die stationäre untere Rolle 50 über ein Umlenkaggregat 54 einem Umreifungsaggregat 56 der Umreifungsmaschine 12 zugeführt.According to Figure 4, the band 14 is following the stationary lower Roll 50 via a deflection unit 54 a strapping unit 56 of the Strapping machine 12 fed.

Überdies ist anhand der Figur 4 zu erkennen, daß die Umreifungsmaschine 12 bzw. deren Umreifungsaggregat 56 ein Bandeinführ- und Spannaggregat 60 umfaßt, das mit einer Spannvorrichtung 62 zum Endspannen des beispielsweise aus Kunststoff bestehenden Bandes 14 versehen ist. Im Bereich eines Führungskanals 64 ist ein mit einem reversierbaren Antrieb verbundenes Förderrollenpaar 66 angeordnet. Es ist dazu bestimmt, das von der Abwickelvorrichtung 10 herkommende und durch die Spannvorrichtung 62 hindurchgeführte Band 14 in einer der Spannrichtung S entgegengesetzten Vorschubrichtung durch ein Klemm- und Verschlußaggregat 68 hindurch und mit dem freien Bandende 14' voraus in einen Führungsrahmen 70 einzuschießen, bis das Bandende 14' an einem Anschlag im Klemm- und Verschlußaggregat 68 ansteht. Der Führungsrahmen 70 verläuft um das Umreifungsgut 72 herum. Überdies ist das Förderrollenpaar 66 dazu bestimmt, das um das Umreifungsgut 72 herumgeführte und mittels einer ersten Bandklemmeinheit 74 des Klemm- und Verschlußaggregates 68 in einem Abstand zum am Anschlag anstehenden Bandende 14' festgeklemmte Band 14 in Spannrichtung S zurückzuziehen, bis es sich an das Umreifungsgut 72 angelegt hat.Furthermore, it can be seen from FIG. 4 that the strapping machine 12 or their strapping unit 56 is a strap insertion and tensioning unit 60 comprises that with a tensioning device 62 for final tensioning of the band 14, for example made of plastic, is provided. in the The area of a guide channel 64 is one with a reversible drive connected conveyor roller pair 66 arranged. It is designed to coming from the unwinding device 10 and through the tensioning device 62 passed band 14 in a direction opposite to the tensioning direction S. Feed direction by a clamping and locking unit 68 through and with the free band end 14 'ahead in a guide frame 70 to shoot until the tape end 14 'at a stop in the clamping and sealing assembly 68. The guide frame 70 runs around the strapping material 72. Moreover, the conveyor roller pair 66 destined for that which is led around the strapping 72 and by means of a first band clamping unit 74 of the clamping and closing unit 68 at a distance from the stop at the stop Pulling tape end 14 'of clamped tape 14 back in tensioning direction S, until it has put on the strapping 72.

Das Klemm- und Verschlußaggregat 68 weist eine zweite Bandklemmeinheit 74' und zwischen den Bandklemmeinheiten 74 und 74' eine Verschweißeinheit 76 auf.The clamping and closing assembly 68 has a second band clamping unit 74 'and between the belt clamping units 74 and 74' a welding unit 76 on.

Nachdem das Förderrollenpaar 66 das Band 14 in Spannrichtung S zurückgezogen und dieses sich am Umreifungsgut 72 angelegt hat, tritt die Spannvorrichtung 62 in Funktion, wodurch das Band 14 erfaßt und auf die vorbestimmte Spannkraft gespannt wird. Sobald diese erreicht ist, tritt das Klemm- und Verschlußaggregat 68 in Funktion, indem die zweite Bandklemmeinheit 74' das Band 14 festklemmt und die Verschweißeinheit 76 die beiden einander überlappenden Abschnitte des Bandes 14 durch Erhitzen und Klemmen miteinander verschweißt. Danach wird mittels des Klemm- und Verschlußaggregats 68 das Band 14 in Spannrichtung gesehen stromabwärts der Schweißstelle durchtrennt.After the conveyor roller pair 66 pulls the belt 14 back in the tensioning direction S. and this has put on the strapping 72, the Tensioning device 62 in operation, whereby the band 14 is gripped and opened the predetermined clamping force is tensioned. As soon as this is reached, kick the clamping and locking assembly 68 in function by the second Band clamping unit 74 'clamps the band 14 and the welding unit 76 the two overlapping sections of the band 14 welded together by heating and clamping. After that by means of the clamping and closing assembly 68, the band 14 in the tensioning direction seen severed downstream of the weld.

Die Funktionsweise der Abwickelvorrichtung 10 ist wie folgt:The operation of the unwinder 10 is as follows:

Es sei davon ausgegangen, daß sich die unteren Umlenkrollen 42 in einer Position unterhalb des Sensors 52 befinden. Wird nun Band 14 in Richtung des Pfeiles E in die Umreifungsmaschine 12 eingezogen, so werden die vertikal verschiebbaren unteren Umlenkrollen 42 angehoben, bis sie in den Bereich des Sensors 52 gelangen. Nun treibt der Antriebsmotor 26 die Bandvorratsspule 16 an. Infolge der zuvor genannten Geschwindigkeitsverhältnisse bleiben die vertikal verschiebbaren unteren Umlenkrollen 42 im Wirkbereich des Sensors 52 stehen. Sobald nun die Umreifungsmaschine 12 den Bandeinzug stoppt, bewegen sich die unteren Umlenkrollen 42 nach unten aus dem Erfassungsbereich des Sensors 52 heraus, was zur Folge hat, daß der Antriebsmotor 26 über die zugeordnete Steuerung abgestellt wird. Die Umreifungsmaschine 12 gibt beim Anlegen des Bandes 14 an das Umreifungsgut 72 Band an den Bandzwischenspeicher oder Akkumulator 38 zurück, wodurch sich die vertikal verschiebbaren Umlenkrollen 46 in Richtung nach unten bewegen. Beim nächsten Umreifungszyklus wiederholt sich dieser Ablauf.It is assumed that the lower deflection rollers 42 in one Position below the sensor 52. Now becomes volume 14 in the direction of the arrow E into the strapping machine 12, so the vertically displaceable lower guide rollers 42 are raised until they are in reach the area of the sensor 52. Now the drive motor 26 drives the Tape supply reel 16 on. As a result of the aforementioned speed ratios remain the vertically displaceable lower guide rollers 42 stand in the effective range of the sensor 52. As soon as the strapping machine 12 the tape feed stops, the lower pulleys move 42 down out of the detection range of the sensor 52 what has the consequence that the drive motor 26 via the associated control is turned off. The strapping machine 12 gives when putting on the tape 14 to the strapping 72 tape to the strap buffer or Accumulator 38 back, whereby the vertically displaceable deflection rollers 46 move downwards. The next strapping cycle this process is repeated.

Bei dieser Abwickelvorrichtung 10 ist die Abwickelgeschwindigkeit ab der Bandvorratsspule 16 unabhängig von deren Durchmesser stets gleich, was dadurch erreicht wird, daß die Bandvorratsspule 16 unmittelbar auf den Lagerwalzen 20, 22 aufliegt. Die schweren großen Bandvorratsspulen von beispielsweise etwa 70 kg sind einfach handhabbar, und es kann ein außerordentlich großer Bandvorrat bereitgestellt werden. Der Steuerungsaufwand ist minimal. Durch den Gummimantel 24 auf der stromabwärts gelegenen Lagerwalze 22 wird verhindert, daß Bandabschnitte zwischen den beiden Lagerwalzen 20, 22 einen Bauch bilden. Die Seitenwände 28 geben der Bandvorratsspule 16 die gewünschte Stabilität. Die Bandvorratsspule 16 kann beispielsweise zwischen die Seitenwände 28 auf die Lagerwalzen 20, 22 gerollt werden.In this unwinding device 10, the unwinding speed is from Tape supply reel 16 is always the same regardless of its diameter, which is achieved in that the tape supply reel 16 immediately on the bearing rollers 20, 22 rests. The heavy large tape supply spools of about 70 kg, for example, are easy to handle, and it can be one extraordinarily large tape supply can be provided. The control effort is minimal. Through the rubber jacket 24 on the downstream located bearing roller 22 is prevented that tape sections between form the two bearing rollers 20, 22 a belly. The side walls 28 give the tape supply reel 16 the desired stability. The tape supply reel 16 can, for example, between the side walls 28 on the bearing rollers 20, 22 can be rolled.

Zweckmäßigerweise wird die Abwickelgeschwindigkeit stets konstant gehalten, d.h. der Elektromotor stets bei einer gleichen Drehzahl betrieben. Die Einzugsgeschwindigkeit im Bereich der Umreifungsmaschine kann grundsätzlich auch größer oder kleiner als die Abwickelgeschwindigkeit sein.The unwinding speed is expediently always kept constant, i.e. the electric motor is always operated at the same speed. The feeding speed in the area of the strapping machine can basically also larger or smaller than the unwinding speed his.

Claims (14)

Abwickelvorrichtung (10) für eine Umreifungsmaschine (12) zum Abwickeln von Band (14) von einer Bandvorratsspule (16),
gekennzeichnet durch
wenigstens zwei in Umfangsrichtung der Bandvorratsspule (16) hintereinander liegende Lagerwalzen (20, 22), auf denen die Bandvorratsspule (16) mit ihrem jeweiligen Bandaußenumfang aufliegt, wobei zum Antreiben der Bandvorratsspule (16) zumindest die stromabwärts gelegene Lagerwalze (22) antreibbar ist.Unwinding device (10) for a strapping machine (12) for unwinding tape (14) from a tape supply reel (16),
characterized by
at least two bearing rollers (20, 22) lying one behind the other in the circumferential direction of the tape supply reel (16), on which the tape supply reel (16) lies with its respective outer circumference of the tape, at least the downstream storage roller (22) being drivable for driving the tape supply reel (16). Abwickelvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die stromabwärts gelegene Lagerwalze (22) mit einem Gummimantel (24) versehen ist und die stromaufwärts gelegene Lagerwalze (20) vorzugsweise eine Oberfläche aus Stahl besitzt.Unwinding device according to claim 1,
characterized by
that the downstream bearing roller (22) is provided with a rubber jacket (24) and the upstream bearing roller (20) preferably has a surface made of steel. Abwickelvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß sie zwei feststehende Seitenwände (28) umfaßt, die vorzugsweise etwa die gleiche Höhe wie die Bandvorratsspule (16) besitzen und zwischen die die auf die Lagerwalzen (20, 22) abzusenkende Bandvorratsspule (16) einführbar ist. Unwinding device according to one of the preceding claims,
characterized by
that it comprises two fixed side walls (28), which preferably have approximately the same height as the tape supply reel (16) and between which the tape supply reel (16) to be lowered onto the bearing rollers (20, 22) can be inserted. Abwickelvorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß die Seitenwände (28) mit nach oben hin offenen Ausnehmungen (30) versehen sind, die bis in den Bereich eines insbesondere durch einen hohlzylindrischen Kern (18) definierten zentralen Hohlraums (32) der Bandvorratsspule (16) reichen.Unwinding device according to claim 3,
characterized by
that the side walls (28) are provided with recesses (30) which are open towards the top and which extend into the region of a central cavity (32) of the tape supply reel (16), which is defined in particular by a hollow cylindrical core (18). Abwickelvorrichtung nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch
einen Bandzwischenspeicher (38), über den das von der Bandvorratsspule (16) abgewickelte Band (14) der Umreifungsmaschine (12) zugeführt und gespannt gehalten wird.Unwinding device according to one of the preceding claims,
characterized by
a strap buffer (38), via which the strap (14) unwound from the strap supply reel (16) is fed to the strapping machine (12) and held under tension. Abwickelvorrichtung nach Anspruch 5,
dadurch gekennzeichnet,
daß der Antrieb der Bandvorratsspule (16) in Abhängigkeit vom jeweiligen Zustand des Bandzwischenspeichers (38) bzw. der im Bandzwischenspeicher (38) gespeicherten Menge an Bandmaterial ansteuerbar ist.Unwinding device according to claim 5,
characterized by
that the drive of the tape supply reel (16) can be controlled depending on the respective state of the tape buffer (38) or the amount of tape material stored in the tape buffer (38). Abwickelvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß wenigstens ein Gewichtshebel (34) vorgesehen ist, um die auf den Lagerwalzen (20, 22) aufliegende Bandvorratsspule (16) nach unten zu den Lagerwalzen (20, 22) hin zu belasten, wobei der Gewichtshebel (34) vorzugsweise schwenkbar an den feststehenden Seitenwänden (28) gelagert ist. Unwinding device according to one of the preceding claims,
characterized by
that at least one weight lever (34) is provided in order to load the tape supply reel (16) lying on the bearing rollers (20, 22) downwards towards the bearing rollers (20, 22), the weight lever (34) preferably pivoting on the fixed ones Side walls (28) is mounted. Abwickelvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß das von der Bandvorratsspule (16) abgewickelte Band (14) allgemein nach oben zu dem Bandzwischenspeicher (38) geführt ist.Unwinding device according to one of the preceding claims,
characterized by
that the tape (14) unwound from the tape supply reel (16) is guided generally upward to the tape buffer (38). Abwickelvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Bandzwischenspeicher (38) nach Art eines Flaschenzuges wenigstens zwei Umlenkrollen (40, 42) umfaßt, über die das abgewickelte Band (14) unter Bildung einer Bandreserve (44) geführt ist, wobei wenigstens eine ortsfest gelagerte obere Umlenkrolle (40) und wenigstens eine in vertikaler Richtung verschiebbare untere Umlenkrolle (42) vorgesehen sind.Unwinding device according to one of the preceding claims,
characterized by
that the belt intermediate store (38) in the manner of a pulley comprises at least two deflection rollers (40, 42) over which the unwound strip (14) is guided to form a band reserve (44), at least one stationary upper deflection roller (40) and at least one a lower deflection roller (42) which can be displaced in the vertical direction is provided. Abwickelvorrichtung nach Anspruch 9,
dadurch gekennzeichnet,
daß die untere Umlenkrolle (42) an einem Schlitten (46) montiert ist, der entlang einer Schlittenführung (48) in vertikaler Richtung verschiebbar ist.Unwinding device according to claim 9,
characterized by
that the lower deflection roller (42) is mounted on a carriage (46) which can be displaced in the vertical direction along a carriage guide (48). Abwickelvorrichtung nach Anspruch 9 oder 10,
dadurch gekennzeichnet,
daß der Antrieb der Bandvorratsspule (16) in Abhängigkeit von der vertikalen Position der unteren Umlenkrolle (42) bzw. des Schlittens (46) ansteuerbar ist.Unwinding device according to claim 9 or 10,
characterized by
that the drive of the tape supply reel (16) can be controlled as a function of the vertical position of the lower deflection roller (42) or the carriage (46). Abwickelvorrichtung nach Anspruch 11,
dadurch gekennzeichnet,
daß der Antrieb der Bandvorratsspule (16) so angesteuert ist, daß er eingeschaltet ist, wenn die untere Umlenkrolle (42) bzw. der Schlitten (46) eine vorgebbare Position einnimmt oder sich oberhalb dieser befindet, und ausgeschaltet ist, wenn die untere Umlenkrolle (42) bzw. der Schlitten (46) sich unterhalb dieser vorgebbaren Position befindet.Unwinding device according to claim 11,
characterized by
that the drive of the tape supply reel (16) is controlled in such a way that it is switched on when the lower deflection roller (42) or the carriage (46) is in a predeterminable position or is above it, and is switched off when the lower deflection roller ( 42) or the carriage (46) is below this predeterminable position. Abwickelvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß zur Überwachung der vertikalen Position der unteren Umlenkrolle (42) bzw. des Schlittens (46) wenigstens ein insbesondere der Schlittenführung (48) zugeordneter, vorzugsweise vertikal verstellbarer Sensor (52) vorgesehen ist.Unwinding device according to one of the preceding claims,
characterized by
that for monitoring the vertical position of the lower deflection roller (42) or the slide (46) at least one, in particular assigned to the slide guide (48), preferably vertically adjustable sensor (52) is provided. Abwickelvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Umfangsgeschwindigkeit der wenigstens einen angetriebenen Lagerwalze (22, 20) zumindest im wesentlichen gleich der Geschwindigkeit ist, mit der das Band (14) in die Umreifungsmaschine (12) eingezogen wird.Unwinding device according to one of the preceding claims,
characterized by
that the peripheral speed of the at least one driven bearing roller (22, 20) is at least substantially equal to the speed at which the band (14) is drawn into the strapping machine (12).
EP00111786A 1999-07-26 2000-06-03 Device for unrolling a band in a tying machine Expired - Lifetime EP1072515B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19935051A DE19935051A1 (en) 1999-07-26 1999-07-26 Unwinder
DE19935051 1999-07-26

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EP1072515A1 true EP1072515A1 (en) 2001-01-31
EP1072515B1 EP1072515B1 (en) 2004-01-02

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ID=7916105

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EP00111786A Expired - Lifetime EP1072515B1 (en) 1999-07-26 2000-06-03 Device for unrolling a band in a tying machine

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US (1) US6607158B1 (en)
EP (1) EP1072515B1 (en)
AT (1) ATE257111T1 (en)
CA (1) CA2314291C (en)
DE (2) DE19935051A1 (en)
ES (1) ES2209721T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI283650B (en) * 2004-04-23 2007-07-11 Bobst Sa Module for supporting and driving a wound foil matter for a machine processing it
US11999516B2 (en) 2008-04-23 2024-06-04 Signode Industrial Group Llc Strapping device
US10518914B2 (en) 2008-04-23 2019-12-31 Signode Industrial Group Llc Strapping device
DE102011075629B4 (en) 2011-05-11 2016-09-15 Smb Schwede Maschinenbau Gmbh Method for controlling the tape drive device of a strapping machine and corresponding strapping machine
ES2886094T3 (en) * 2014-11-21 2021-12-16 Bobst Mex Sa Support system for coil of stamping strip, unwinding module, stamping machine and procedure of placing a coil
CN113562224A (en) * 2021-06-15 2021-10-29 张家港扬子江冷轧板有限公司 Auxiliary steel bundling belt uncoiling device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408020A (en) * 1967-05-04 1968-10-29 United States Steel Corp Apparatus for disposal of coil-securing bands
DE2824433A1 (en) * 1978-06-03 1979-12-06 Krempel August Soehne Foil dispenser for packaging machine - has motor for drive roller controlled by switch operated by moving tension roller assembly
DE4206330A1 (en) * 1992-02-29 1993-09-02 Schule Gmbh F H Device for wrapping parcels of newspapers - has foil passing from drum below delivery belts to one above plus cutter and heat sealer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1893781U (en) * 1962-11-26 1964-05-27 Hauni Werke Koerber & Co Kg FEEDING DEVICE IN CIGARETTE MACHINES OR IN OTHER MACHINES THAT PROCESS A BOBINE MADE FROM A WINDED STRIP.
JPS57144633A (en) * 1981-03-05 1982-09-07 Inoue Japax Res Inc Wire electrode feeder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408020A (en) * 1967-05-04 1968-10-29 United States Steel Corp Apparatus for disposal of coil-securing bands
DE2824433A1 (en) * 1978-06-03 1979-12-06 Krempel August Soehne Foil dispenser for packaging machine - has motor for drive roller controlled by switch operated by moving tension roller assembly
DE4206330A1 (en) * 1992-02-29 1993-09-02 Schule Gmbh F H Device for wrapping parcels of newspapers - has foil passing from drum below delivery belts to one above plus cutter and heat sealer

Also Published As

Publication number Publication date
CA2314291C (en) 2004-09-28
US6607158B1 (en) 2003-08-19
ES2209721T3 (en) 2004-07-01
DE19935051A1 (en) 2001-02-01
EP1072515B1 (en) 2004-01-02
ATE257111T1 (en) 2004-01-15
CA2314291A1 (en) 2001-01-26
DE50004910D1 (en) 2004-02-05

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