EP0744343B1 - Tensioning and fixing device for tying an object with a plastic tape - Google Patents

Tensioning and fixing device for tying an object with a plastic tape Download PDF

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Publication number
EP0744343B1
EP0744343B1 EP96108154A EP96108154A EP0744343B1 EP 0744343 B1 EP0744343 B1 EP 0744343B1 EP 96108154 A EP96108154 A EP 96108154A EP 96108154 A EP96108154 A EP 96108154A EP 0744343 B1 EP0744343 B1 EP 0744343B1
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EP
European Patent Office
Prior art keywords
tensioning
shoe
wheel
tensioning wheel
rocker
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 - Lifetime
Application number
EP96108154A
Other languages
German (de)
French (fr)
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EP0744343A1 (en
Inventor
Nikolaus Stamm
Flavio Finzo
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.)
Signode Switzerland GmbH
Original Assignee
Orgapack GmbH
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Filing date
Publication date
Application filed by Orgapack GmbH filed Critical Orgapack GmbH
Publication of EP0744343A1 publication Critical patent/EP0744343A1/en
Application granted granted Critical
Publication of EP0744343B1 publication Critical patent/EP0744343B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B13/24—Securing ends of binding material
    • B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive
    • B65B13/327—Hand 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
    • B65B13/22—Means for controlling tension of binding means

Definitions

  • the invention relates to a tensioning and closing device for strapping an object with a plastic strap, the has a tensioning wheel pivotally mounted on a rocker.
  • a device of this type is known from the not previously published European Patent Application No. 94 117 501.0 (EP-A-0 664 256). This describes a device in which after insertion of the plastic strap a seesaw, and thus a Tensioning wheel on which the belt is lowered. Then using a manually operated tensioning lever turned the tensioning wheel, which tensions the band. A motor driven Closing device then connects the overlapping Band ends. To release the rocker after the clamping process to simplify, is the axis of rotation of the swiveling rocker between the contact surface of a tension shoe and a base plate arranged behind the tensioning shoe in the tensioning direction.
  • the invention has for its object a clamping and Closing device of the type mentioned create which one the rocker while maintaining the advantageous rocker mounting with the tensioning wheel enough pressure on the thing to be tensioned Tape exerts to the motor drive of the tensioner to enable.
  • the stated object is achieved by the device mentioned in claim 1.
  • This tensioning and closing device ensures adequate Pressing force of the tensioning wheel on the plastic band to be tensioned, without loosening the strap tension would.
  • the tensioning shoe is rotatably mounted and are the axis of rotation of the tension shoe and the axis of rotation of the rocker is identical. This ensures that the relative position of the tensioning wheel and the contact surface of the tensioning shoe during the tensioning process not changed.
  • the Tension shoe one in the tensioning direction along at least one partially sloping surface of a carrier part movable sliding part on. So is the pressing force of the Tensioning wheel raised to the belt to be tensioned.
  • the carrier part of the tensioning shoe with a first guide part provided for the lower end of the band, the first effective area to generate a torque on the tension shoe at Has clamping process, as well as with a second guide part for the upper band end, which creates a second effective area a torque on the tension shoe after loosening the Has rocker with tensioned band
  • the effective surfaces of the two guide parts are dimensioned so that after after loosening the rocker with the strap tensioned, the tensioning shoe turns and this first releases the lower end of the band.
  • the drive of the tensioning wheel with the help of an electric or compressed air motor, the drive motor of the tensioning wheel is arranged coaxially with the tensioning wheel and via a coaxial gear arranged with the tensioning wheel connected to the tensioning wheel is.
  • FIG. 1 shows the tensioning and closing device according to the invention schematically in a perspective view reproduced.
  • Figure 2 shows a side view of the Contraption. It comprises a housing 1 with a base plate 2, on which a clamping unit 3 and a not shown known sealing unit are attached.
  • the plastic tape is around the item around, and two of its ends to be closed held by the clamping unit 3.
  • the capping unit is suitable for the two themselves in a manner known per se overlapping ends after tensioning the plastic tape connect, for example by friction welding. If that Plastic tape can be unwound from a supply roll a separation device, not shown, is arranged downstream of the clamping unit 3 be to cut off the required plastic tape section from the supply roll.
  • the clamping unit 3 has a fixed tooth plate 4 for laying on the lower end of the plastic band to be closed on.
  • a movable tensioning shoe 5 is toothed on the underside to interact with the tooth plate 4.
  • the top of the tensioning shoe 5 has a contact surface 10 which is suitable is for placing the upper end to be closed of the plastic band.
  • the axis of rotation of the pivotable rocker 6 is approximately between that Clamping shoe 5 and the base plate 2 and in the clamping direction 9 arranged behind the contact surface 10 of the tensioning shoe 5.
  • the rocker 6 with the tensioning wheel 8 is actuated by a Lever 11 pivotable. If in the tension direction 9 to the rear (see Fig. 1) or pivoted to the right (see Fig. 2) is, the clamping shoe 5 can be lifted off the tooth plate 4, so that the lower end of the plastic tape to be closed inserted between the tooth plate 4 and the clamping shoe 5 can be. Then the lower end of the band is pinched, and the tensioning wheel 8 is held at a distance from the tensioning shoe 5, so that the top end of the plastic tape to be closed inserted between the tensioning shoe 5 and the tensioning wheel 8 can be. If the rocker 6 in the tensioning direction 9 forward is pivoted, the tensioning wheel 8 is against the bearing surface of the tension shoe 5 pressed and clamps the upper end of the band, so that by turning the tensioning wheel 8 the tensioning process can be carried out.
  • the drive of the tensioning wheel 8 for tensioning the plastic band when the tensioning wheel 8 rests on the tensioning shoe 5 by means of a motor 12 which is coaxial with the tensioning wheel 8 arranged and via a likewise coaxial with the tensioning wheel 8 arranged, known per se, for example two-stage Planetary gear is connected to the tensioning wheel 8.
  • This arrangement enables a very compact design and high overall efficiency Tension drive. This is for a clamping unit with battery operation essential.
  • Both the closing unit and the clamping unit 3 are motor-driven, the drive motor 12 of the Clamping device and also the motor of the closing device can be powered by a battery. So that the tension wheel 8 does not slip, is to increase the pressing force on the belt to be tensioned in order to drive the motor
  • the bearing surface 10 of the Clamping shoe 5 movably mounted so that it during the clamping process pressed against the same by rotating the tensioning wheel 8 becomes. In this way, an additional pressing force of the tensioning wheel 8 on the plastic band to be tensioned reached, the rocker 6 are still easily solved can.
  • the design of the tensioning shoe 5 is based on the figures 3 to 5 explained in more detail.
  • Tensioning wheel 8 driven by the motor 12, so that it is turned counterclockwise and the plastic band in the direction of tension 9.
  • a backstop, not shown ensures that the tensioning wheel 8 is only rotated in the tensioning direction 9 can be.
  • the closing unit is activated after the clamping process for friction welding the ends of the tensioned plastic band. Since the closing unit in the clamping direction 9 is arranged behind the tensioning wheel 8, the upper end of the band not tense with the sealing unit. This is beneficial when friction welding the two overlapping ends of the plastic belt, as a non-tensioned belt section is easier to vibrate than a tensioned one Band section.
  • an electric motor can be used as the drive motor 12 or an air motor can be used.
  • a brushless DC motor selected with the Direct current of the battery can be operated.
  • the torque the drive motor 12 of the tensioning wheel 8 is adjustable, so that appropriate for different objects to be strapped Band tension ranges can be set.
  • FIG. 3 is a perspective view of a first one Embodiment of the tension shoe of a device according to the invention reproduced.
  • FIG. 4 shows a schematic side view of the 3.
  • This comprises a carrier part 14 made of precision cast steel and a sliding part 15 from one low-friction, thermoplastic.
  • the sliding part 15 is in a recess on the top of the carrier part 14 arranged and has the bearing surface 10.
  • the underside of the carrier part 14 is for clamping the lower end of the band to be tensioned partially serrated.
  • the sliding part 15 is firmly connected to the carrier part 14.
  • the support surface 10 is as a substantially cylindrical Deepening.
  • the carrier part 14 is rotatable around an axis of rotation 16 mounted on the housing 1. Through this swivel Bearing acts on the torque during the clamping process Clamping shoe 5, and the bearing surface 10 of the sliding part 15 pressed tightly against the tensioning wheel surface when tensioning the belt, so that the pressing force on the top to be tensioned Band end is increased significantly. Between the contact surface 10 and the tensioning wheel 8, as it were, wedging occurs.
  • the axis of rotation 16 is advantageously also the axis of rotation the rocker 6.
  • the carrier part 14 of the tensioning shoe 5 has a first guide part 17 provided for the lower strap end to be tensioned, a first effective surface 18 for generating a torque on the tensioning shoe 5 during the tensioning process. That torque causes an increase in the pressing force on the upper one Too exciting band end and a reduction in the pinching force to the lower end of the band.
  • the carrier part 14 of the tensioning shoe 5 has a second guide part 19 for the upper band end to be tensioned provided a second active surface 20 for generating a Torque on the tensioning shoe 5 after loosening the rocker 6 with the belt tensioned.
  • the active surfaces 18, 20 of the two Guide parts 17, 19 are dimensioned so that after loosening the rocker 6 with the band tensioned, the tensioning shoe 5 rotates and this first releases the lower end of the belt. Immediately afterwards the upper end of the band is released. On this way, damage is caused to high tensioned belts the closure when loosening the rocker 6 avoided.
  • the second active surface 20 is advantageously slightly laterally outside inclined. This creates after loosening the rocker 6 through the now tensioned band part between the Tensioning wheel 8 and the closing unit a force component on the tensioning shoe 5, which release the device from the finished Strapping relieved.
  • FIG. 5 is a side view of a further embodiment the tension shoe reproduced.
  • the tension shoe 5 has one in the clamping direction 9 along at least partially inclined surface 21 of the support member 14 movably mounted Sliding part 22. This becomes part of the tension wheel 8 generated tangential forces converted into radial forces. Consequently the pressing force becomes simple during the clamping process the tensioning wheel 8 increased to the band to be tensioned and a spinning of the tensioning wheel 8 avoided.
  • the tension shoe 5 is not necessarily pivotable in this embodiment stored.

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

Abstract

The clamping unit (3) has a pivot mounted clamping shoe (5) and a clamping wheel driven by an electric or compressed air motor (8) and fixed to a pivoting rocker arm (6) whose pivot axle is positioned between one support surface (10) of the clamping shoe and a base plate (2). The support surface is movably mounted so that it is pressed against the clamping wheel when the clamping wheel is turned. The clamping shoe and rocker arm share the same pivot axle. The clamping shoe has a slide piece which is movable along an at least partly sloping surface of a holder. The holder has two guide pieces (17,19) for the bottom and top ends respectively of the strap.

Description

Die Erfindung betrifft eine Spann- und Verschliessvorrichtung zum Umreifen eines Gegenstandes mit einem Kunststoffband, die ein an einer Wippe schwenkbar gelagertes Spannrad aufweist.The invention relates to a tensioning and closing device for strapping an object with a plastic strap, the has a tensioning wheel pivotally mounted on a rocker.

Eine Vorrichtung dieser Art ist bekannt aus der nicht vorveröffentlichten europäischen Patentanmeldung Nr. 94 117 501.0 (EP-A-0 664 256). Darin ist ein Gerät beschrieben, bei welchem nach dem Einschieben des Kunststoffbandes eine Wippe, und damit ein Spannrad, auf das Band abgesenkt wird. Dann wird mittels eines manuell zu betätigenden Spannhebels das Spannrad gedreht, wodurch das Band gespannt wird. Eine motorisch angetriebene Verschliessvorrichtung verbindet danach die sich überlappenden Bandenden. Um das Lösen der Wippe nach dem Spannvorgang zu vereinfachen, ist die Drehachse der schwenkbaren Wippe zwischen der Auflagefläche eines Spannschuhs und einer Grundplatte in Spannrichtung hinter dem Spannschuh angeordnet.A device of this type is known from the not previously published European Patent Application No. 94 117 501.0 (EP-A-0 664 256). This describes a device in which after insertion of the plastic strap a seesaw, and thus a Tensioning wheel on which the belt is lowered. Then using a manually operated tensioning lever turned the tensioning wheel, which tensions the band. A motor driven Closing device then connects the overlapping Band ends. To release the rocker after the clamping process to simplify, is the axis of rotation of the swiveling rocker between the contact surface of a tension shoe and a base plate arranged behind the tensioning shoe in the tensioning direction.

Beim manuellen Spannvorgang wirkt durch die Muskelkraft des Gebrauchers über den Spannhebel ein zusätzliches Drehmoment auf die Wippe mit dem Spannrad, wodurch eine ausreichende Andrückkraft des Spannrades auf das Band erzielt wird. Ohne dieses zusätzliche Drehmoment würde die Andrückkraft jedoch nicht genügen: Das Spannrad würde schon bei einer kleinen Bandspannung durchrutschen.In the manual tensioning process, the muscle power of the Additional torque via the tension lever on the seesaw with the tensioning wheel, which creates a sufficient pressing force of the tensioning wheel is achieved on the belt. Without however, this additional torque would affect the pressing force not enough: The tensioning wheel would already be with a small one Slip through the belt tension.

Bei einer in der GB-A-2 098 164 beschriebenen anderen Art von Spann- und Verschliessvorrichtung ist das Spannrad - bis auf seine Rotationsbewegung - am Gehäuse fixiert. Um bei einem solchen Aufbau ein leichtes Lösen des Spannrades zu erreichen, wird vorgeschlagen, eine an einem relativ langen Hebel angeordnete bewegliche Andruckfläche eines Spannschuhs in Kombination mit dem ortsfesten Spannrad zu verwenden. Die in der GB-A-2 098 164 gezeigte Vorrichtung benötigt für ihre Funktionsfähigkeit eine exzentrische Lagerung des Hebels damit sich nach dem Spannvorgang der Spannschuh vom Spannrad wieder lösen lässt.In another type described in GB-A-2 098 164 of tensioning and closing device is the tensioning wheel - to on its rotational movement - fixed to the housing. To at such a structure easy loosening of the tensioning wheel achieve, it is suggested to take one at a relatively long time Lever arranged movable pressure surface of a tension shoe to be used in combination with the stationary tensioning wheel. The device shown in GB-A-2 098 164 needed for their Functionality an eccentric bearing of the lever so that the tensioning shoe is removed from the tensioning wheel after the tensioning process can be solved again.

Der Erfindung liegt die Aufgabe zugrunde, eine Spann- und Verschliessvorrichtung der eingangs genannten Art zu schaffen, bei welcher unter Beibehaltung der vorteilhaften Wippenlagerung die Wippe mit dem Spannrad genügend Andrückkraft auf das zu spannende Band ausübt, um den motorischen Antrieb der Spannvorrichtung zu ermöglichen.The invention has for its object a clamping and Closing device of the type mentioned create which one the rocker while maintaining the advantageous rocker mounting with the tensioning wheel enough pressure on the thing to be tensioned Tape exerts to the motor drive of the tensioner to enable.

Die genannte Aufgabe wird erfindungsgemäss durch die in Patentanspruch 1 genannte Vorrichtung gelöst. Diese Spann- und Verschliessvorrichtung gewährleistet eine ausreichende Andrückkraft des Spannrades auf das zu spannende Kunststoffband, ohne dass das Lösen der Bandspannung erschwert würde.According to the invention, the stated object is achieved by the device mentioned in claim 1. This tensioning and closing device ensures adequate Pressing force of the tensioning wheel on the plastic band to be tensioned, without loosening the strap tension would.

Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous developments of the invention result from the subclaims.

Gemäss einer Ausführungsform der Erfindung ist der Spannschuh drehbar gelagert und sind die Drehachse des Spannschuhs und die Drehachse der Wippe identisch. Dadurch wird erreicht, dass sich die relative Lage des Spannrades und der Auflagefläche des Spannschuhs während dem Spannvorgang praktisch nicht verändert.According to one embodiment of the invention, the tensioning shoe is rotatably mounted and are the axis of rotation of the tension shoe and the axis of rotation of the rocker is identical. This ensures that the relative position of the tensioning wheel and the contact surface of the tensioning shoe during the tensioning process not changed.

Gemäss einer weiteren Ausführungsform der Erfindung weist der Spannschuh einen in Spannrichtung entlang einer mindestens teilweise schrägen Fläche eines Trägerteils bewegbaren Gleitteil auf. So ist auf einfache Weise die Andrückkraft des Spannrades auf das zu spannende Band erhöht.According to a further embodiment of the invention, the Tension shoe one in the tensioning direction along at least one partially sloping surface of a carrier part movable sliding part on. So is the pressing force of the Tensioning wheel raised to the belt to be tensioned.

Gemäss noch einer weiteren Ausführungsform der Erfindung ist der Trägerteil des Spannschuhs mit einem ersten Führungsteil für das untere Bandende versehen, der eine erste Wirkfläche zur Erzeugung eines Drehmomentes auf den Spannschuh beim Spannvorgang aufweist, sowie mit einem zweiten Führungsteil für das obere Bandende, der eine zweite Wirkfläche zur Erzeugung eines Drehmomentes auf den Spannschuh nach dem Lösen der Wippe bei gespanntem Band aufweist, wobei die Wirkflächen der beiden Führungsteile so dimensioniert sind, dass sich nach dem Lösen der Wippe bei gespanntem Band der Spannschuh dreht und dieser dabei zuerst das untere Bandende freigibt. Hierdurch wird bei hoch gespannten Bändern eine Beschädigung beim Lösen der Wippe vermieden.According to yet another embodiment of the invention the carrier part of the tensioning shoe with a first guide part provided for the lower end of the band, the first effective area to generate a torque on the tension shoe at Has clamping process, as well as with a second guide part for the upper band end, which creates a second effective area a torque on the tension shoe after loosening the Has rocker with tensioned band, the effective surfaces of the two guide parts are dimensioned so that after after loosening the rocker with the strap tensioned, the tensioning shoe turns and this first releases the lower end of the band. Hereby will damage the high tensioned belts Loosened rocker avoided.

Gemäss noch einer weiteren Ausführungsform der Erfindung erfolgt der Antrieb des Spannrades mit Hilfe eines Elektro- oder Druckluftmotors, wobei der Antriebsmotor des Spannrades koaxial mit dem Spannrad angeordnet ist und über ein koaxial mit dem Spannrad angeordnetes Getriebe mit dem Spannrad verbunden ist. Mit dieser Anordnung werden eine sehr kompakte Bauweise und ein hoher Gesamtwirkungsgrad der Spannvorrichtung erreicht, der bei einem Akku-Betrieb wesentlich ist.According to yet another embodiment of the invention the drive of the tensioning wheel with the help of an electric or compressed air motor, the drive motor of the tensioning wheel is arranged coaxially with the tensioning wheel and via a coaxial gear arranged with the tensioning wheel connected to the tensioning wheel is. With this arrangement, a very compact Construction and a high overall efficiency of the clamping device achieved, which is essential for battery operation.

Einige Ausführungsbeispiele der Erfindung sind nachstehend anhand der Zeichnungen näher erläutert. Es zeigen

Fig. 1
eine perspektivische Ansicht der erfindungsgemässen Vorrichtung,
Fig. 2
eine Seitenansicht der Vorrichtung der Fig. 1,
Fig. 3
eine perspektivische Ansicht einer ersten Ausführungsform des Spannschuhs,
Fig. 4
eine Seitenansicht des Spannschuhs der Fig. 3 und
Fig. 5
eine Seitenansicht einer weiteren Ausführungsform des Spannschuhs.
Some embodiments of the invention are explained below with reference to the drawings. Show it
Fig. 1
2 shows a perspective view of the device according to the invention,
Fig. 2
2 shows a side view of the device of FIG. 1,
Fig. 3
2 shows a perspective view of a first embodiment of the tensioning shoe,
Fig. 4
a side view of the tension shoe of FIGS. 3 and
Fig. 5
a side view of another embodiment of the tensioning shoe.

In der Figur 1 ist die erfindungsgemässe Spann- und Verschliessvorrichtung schematisch in einer perspektivischen Ansicht wiedergegeben. Die Figur 2 zeigt eine Seitenansicht der Vorrichtung. Sie umfasst ein Gehäuse 1 mit einer Grundplatte 2, auf dem eine Spanneinheit 3 und eine nicht gezeigte, an sich bekannte Verschliesseinheit befestigt sind. Im Gebrauch wird die Vorrichtung mit der Grundplatte 2 auf einen mit einem thermoplastischen Kunststoffband zu umreifenden Gegenstand aufgesetzt. Das Kunststoffband wird um den Gegenstand herumgelegt, und zwei seiner zu verschliessenden Enden werden von der Spanneinheit 3 gehalten. Die Verschliesseinheit ist dazu geeignet, in an sich bekannter Weise die beiden sich überlappenden Enden nach dem Spannen des Kunststoffbandes zu verbinden, beispielsweise durch Reibschweissen. Falls das Kunststoffband von einer Vorratsrolle abgewickelt wird, kann eine nicht gezeigte Trennvorrichtung der Spanneinheit 3 nachgeordnet sein zum Abtrennen des benötigten Kunststoffbandabschnittes von der Vorratsrolle.FIG. 1 shows the tensioning and closing device according to the invention schematically in a perspective view reproduced. Figure 2 shows a side view of the Contraption. It comprises a housing 1 with a base plate 2, on which a clamping unit 3 and a not shown known sealing unit are attached. In use the device with the base plate 2 on one with a thermoplastic band to be strapped put on. The plastic tape is around the item around, and two of its ends to be closed held by the clamping unit 3. The capping unit is suitable for the two themselves in a manner known per se overlapping ends after tensioning the plastic tape connect, for example by friction welding. If that Plastic tape can be unwound from a supply roll a separation device, not shown, is arranged downstream of the clamping unit 3 be to cut off the required plastic tape section from the supply roll.

Die Spanneinheit 3 weist eine feste Zahnplatte 4 zum Auflegen des unteren zu verschliessenden Endes des Kunststoffbandes auf. Ein bewegbarer Spannschuh 5 ist auf der Unterseite gezahnt zum Zusammenwirken mit der Zahnplatte 4. Die Oberseite des Spannschuhs 5 weist eine Auflagefläche 10 auf, welche geeignet ist zum Auflegen des oberen zu verschliessenden Endes des Kunststoffbandes. Weiterhin ist eine schwenkbare Wippe 6 vorgesehen mit einem gezahnten, um eine Spannachse 7 drehbaren, antreibbaren Spannrad 8 zum Andrücken des oberen Endes des Kunststoffbandes gegen den Spannschuh 5 und zum Erfassen des oberen Endes bei Drehung des Spannrades 8, so dass das Kunststoffband in Spannrichtung 9 in an sich bekannter Weise gespannt wird.The clamping unit 3 has a fixed tooth plate 4 for laying on the lower end of the plastic band to be closed on. A movable tensioning shoe 5 is toothed on the underside to interact with the tooth plate 4. The top of the tensioning shoe 5 has a contact surface 10 which is suitable is for placing the upper end to be closed of the plastic band. There is also a swiveling rocker 6 provided with a toothed, rotatable about a clamping axis 7, drivable tensioning wheel 8 for pressing the upper end of the plastic band against the tensioning shoe 5 and for gripping of the upper end upon rotation of the tensioning wheel 8, so that Plastic tape in the tensioning direction 9 in a manner known per se is excited.

Die Drehachse der schwenkbaren Wippe 6 ist etwa zwischen dem Spannschuh 5 und der Grundplatte 2 und in Spannrichtung 9 hinter der Auflagefläche 10 des Spannschuhs 5 angeordnet. Dadurch kann die Wippe 6 mit dem Spannrad 8 ohne grossen Kraftaufwand in jeder Gebrauchslage der Vorrichtung, insbesondere bei gespanntem Band, wieder abgehoben werden. The axis of rotation of the pivotable rocker 6 is approximately between that Clamping shoe 5 and the base plate 2 and in the clamping direction 9 arranged behind the contact surface 10 of the tensioning shoe 5. Thereby can the rocker 6 with the tensioning wheel 8 without great effort in any position of use of the device, in particular with the belt tensioned, be lifted off again.

Die Wippe 6 mit dem Spannrad 8 ist mittels Betätigung eines Hebels 11 schwenkbar. Wenn sie in Spannrichtung 9 nach hinten (siehe Fig. 1) bzw. nach rechts (siehe Fig. 2) geschwenkt ist, ist der Spannschuh 5 von der Zahnplatte 4 abhebbar, so dass das untere zu verschliessende Ende des Kunststoffbandes zwischen der Zahnplatte 4 und dem Spannschuh 5 eingeführt werden kann. Dann wird das untere Bandende eingeklemmt, und das Spannrad 8 wird mit Abstand zum Spannschuh 5 gehalten, so dass das obere zu verschliessende Ende des Kunststoffbandes zwischen dem Spannschuh 5 und dem Spannrad 8 eingeführt werden kann. Wenn die Wippe 6 in Spannrichtung 9 nach vorne geschwenkt ist, wird das Spannrad 8 gegen die Auflagefläche des Spannschuhs 5 gedrückt und klemmt das obere Bandende ein, so dass durch Drehung des Spannrades 8 der Spannvorgang durchgeführt werden kann.The rocker 6 with the tensioning wheel 8 is actuated by a Lever 11 pivotable. If in the tension direction 9 to the rear (see Fig. 1) or pivoted to the right (see Fig. 2) is, the clamping shoe 5 can be lifted off the tooth plate 4, so that the lower end of the plastic tape to be closed inserted between the tooth plate 4 and the clamping shoe 5 can be. Then the lower end of the band is pinched, and the tensioning wheel 8 is held at a distance from the tensioning shoe 5, so that the top end of the plastic tape to be closed inserted between the tensioning shoe 5 and the tensioning wheel 8 can be. If the rocker 6 in the tensioning direction 9 forward is pivoted, the tensioning wheel 8 is against the bearing surface of the tension shoe 5 pressed and clamps the upper end of the band, so that by turning the tensioning wheel 8 the tensioning process can be carried out.

Der Antrieb des Spannrades 8 zum Spannen des Kunststoffbandes, wenn das Spannrad 8 auf dem Spannschuh 5 aufliegt, erfolgt mittels eines Motors 12, der koaxial mit dem Spannrad 8 angeordnet und über ein ebenfalls koaxial mit dem Spannrad 8 angeordnetes, an sich bekanntes, beispielsweise zweistufiges Planetengetriebe mit dem Spannrad 8 verbunden ist. Die Drehzahl des Antriebsmotors 12 wird mit Hilfe des Planetengetriebes, das unter der Wippenhaube 13 gelagert ist, auf das gewünschte Mass reduziert. Diese Anordnung ermöglicht eine sehr kompakte Bauweise und einen hohen Gesamtwirkungsgrad des Spannantriebs. Dies ist bei einer Spanneinheit mit Akku-Betrieb wesentlich.The drive of the tensioning wheel 8 for tensioning the plastic band, when the tensioning wheel 8 rests on the tensioning shoe 5 by means of a motor 12 which is coaxial with the tensioning wheel 8 arranged and via a likewise coaxial with the tensioning wheel 8 arranged, known per se, for example two-stage Planetary gear is connected to the tensioning wheel 8. The speed of the drive motor 12 with the help of the planetary gear, which is stored under the rocker hood 13 to the desired Measure reduced. This arrangement enables a very compact design and high overall efficiency Tension drive. This is for a clamping unit with battery operation essential.

Sowohl die Verschliesseinheit als auch die Spanneinheit 3 werden motorisch angetrieben, wobei der Antriebsmotor 12 der Spannvorrichtung und auch der Motor der Verschliessvorrichtung von einem Akku gespeist werden können. Damit das Spannrad 8 nicht durchrutscht, ist zur Erhöhung der Andrückkraft auf das zu spannende Band, um den motorischen Antrieb der Spannvorrichtung zu ermöglichen, die Auflagefläche 10 des Spannschuhs 5 derart beweglich gelagert, dass sie beim Spannvorgang durch Drehung des Spannrades 8 gegen dasselbe gedrückt wird. Auf diese Weise wird eine zusätzliche Andrückkraft des Spannrades 8 auf das zu spannende Kunststoffband erreicht, wobei die Wippe 6 immer noch einfach gelöst werden kann. Die Ausführung des Spannschuhs 5 wird anhand der Figuren 3 bis 5 näher erläutert.Both the closing unit and the clamping unit 3 are motor-driven, the drive motor 12 of the Clamping device and also the motor of the closing device can be powered by a battery. So that the tension wheel 8 does not slip, is to increase the pressing force on the belt to be tensioned in order to drive the motor To enable clamping device, the bearing surface 10 of the Clamping shoe 5 movably mounted so that it during the clamping process pressed against the same by rotating the tensioning wheel 8 becomes. In this way, an additional pressing force of the tensioning wheel 8 on the plastic band to be tensioned reached, the rocker 6 are still easily solved can. The design of the tensioning shoe 5 is based on the figures 3 to 5 explained in more detail.

Beim Spannvorgang wird das um die Spannachse 7 drehbar gelagerte Spannrad 8 mittels des Motors 12 angetrieben, so dass es im Gegenuhrzeigersinn gedreht wird und das Kunststoffband in Spannrichtung 9 spannt. Eine nicht gezeigte Rücklaufsperre sorgt dafür, dass das Spannrad 8 nur in Spannrichtung 9 gedreht werden kann. Mittels einer nicht gezeigten Verschliesstaste wird nach dem Spannvorgang die Verschliesseinheit aktiviert zum Reibverschweissen der Enden des gespannten Kunststoffbandes. Da die Verschliesseinheit in Spannrichtung 9 hinter dem Spannrad 8 angeordnet ist, ist das obere Bandende bei der Verschliesseinheit nicht gespannt. Dies ist vorteilhaft beim Reibverschweissen der beiden sich überlappenden Enden des Kunststoffbandes, da ein nicht gespannter Bandabschnitt leichter in Vibration zu versetzen ist als ein gespannter Bandabschnitt.During the tensioning process, that which is rotatable about the tension axis 7 is mounted Tensioning wheel 8 driven by the motor 12, so that it is turned counterclockwise and the plastic band in the direction of tension 9. A backstop, not shown ensures that the tensioning wheel 8 is only rotated in the tensioning direction 9 can be. By means of a locking button, not shown the closing unit is activated after the clamping process for friction welding the ends of the tensioned plastic band. Since the closing unit in the clamping direction 9 is arranged behind the tensioning wheel 8, the upper end of the band not tense with the sealing unit. This is beneficial when friction welding the two overlapping ends of the plastic belt, as a non-tensioned belt section is easier to vibrate than a tensioned one Band section.

Als Antriebsmotor 12 kann beispielsweise ein Elektromotor oder ein Druckluftmotor verwendet werden. Vorteilhaft wird ein bürstenloser Gleichstrommotor gewählt, der mit dem Gleichstrom des Akkus betrieben werden kann. Das Drehmoment des Antriebsmotors 12 des Spannrades 8 ist einstellbar, so dass für unterschiedliche zu umreifende Gegenstände entsprechende Bandspannungsbereiche eingestellt werden können.For example, an electric motor can be used as the drive motor 12 or an air motor can be used. Will be beneficial a brushless DC motor selected with the Direct current of the battery can be operated. The torque the drive motor 12 of the tensioning wheel 8 is adjustable, so that appropriate for different objects to be strapped Band tension ranges can be set.

In der Figur 3 ist eine perspektivische Ansicht einer ersten Ausführungsform des Spannschuhs einer erfindungsgemässen Vorrichtung wiedergegeben. Die Figur 4 zeigt eine schematische Seitenansicht des Spannschuhs der Fig. 3. Dieser umfasst einen Trägerteil 14 aus Präzisions-Stahlguss und einen Gleitteil 15 aus einem reibungsarmen, thermoplastischen Kunststoff. Der Gleitteil 15 ist in einer Aussparung auf der Oberseite des Trägerteils 14 angeordnet und weist die Auflagefläche 10 auf. Während dem Spannvorgang gleitet das zu spannende Band auf der Auflagefläche 10 des Gleitteils 15. Die Unterseite des Trägerteils 14 ist zum Einklemmen des unteren zu spannenden Bandendes teilweise gezahnt ausgeführt.FIG. 3 is a perspective view of a first one Embodiment of the tension shoe of a device according to the invention reproduced. FIG. 4 shows a schematic side view of the 3. This comprises a carrier part 14 made of precision cast steel and a sliding part 15 from one low-friction, thermoplastic. The sliding part 15 is in a recess on the top of the carrier part 14 arranged and has the bearing surface 10. During the Tensioning process slides the strap to be tensioned on the support surface 10 of the sliding part 15. The underside of the carrier part 14 is for clamping the lower end of the band to be tensioned partially serrated.

Der Gleitteil 15 ist fest mit dem Trägerteil 14 verbunden. Die Auflagefläche 10 ist als eine im wesentlichen zylindrische Vertiefung ausgebildet. Der Trägerteil 14 ist drehbar um eine Drehachse 16 am Gehäuse 1 gelagert. Durch diese schwenkbare Lagerung wirkt beim Spannvorgang ein Drehmoment auf den Spannschuh 5, und die Auflagefläche 10 des Gleitteils 15 wird beim Spannen des Bandes fest gegen die Spannradfläche gedrückt, so dass die Andrückkraft auf das zu spannende obere Bandende wesentlich erhöht wird. Zwischen der Auflagefläche 10 und dem Spannrad 8 tritt gleichsam eine Verkeilung auf.The sliding part 15 is firmly connected to the carrier part 14. The support surface 10 is as a substantially cylindrical Deepening. The carrier part 14 is rotatable around an axis of rotation 16 mounted on the housing 1. Through this swivel Bearing acts on the torque during the clamping process Clamping shoe 5, and the bearing surface 10 of the sliding part 15 pressed tightly against the tensioning wheel surface when tensioning the belt, so that the pressing force on the top to be tensioned Band end is increased significantly. Between the contact surface 10 and the tensioning wheel 8, as it were, wedging occurs.

Vorteilhaft ist die Drehachse 16 gleichzeitig auch die Drehachse der Wippe 6. Somit verändert sich die relative Lage des Spannrades 8 und der Auflagefläche 10 des Spannschuhs 5 während dem Spannvorgang und bei unterschiedlichen Banddicken praktisch nicht. Dies begünstigt den Spannvorgang.The axis of rotation 16 is advantageously also the axis of rotation the rocker 6. Thus the relative position of the Tensioning wheel 8 and the bearing surface 10 of the tensioning shoe 5 during the tensioning process and with different strip thicknesses practically not. This favors the tensioning process.

Der Trägerteil 14 des Spannschuhs 5 ist mit einem ersten Führungsteil 17 für das untere zu spannende Bandende versehen, der eine erste Wirkfläche 18 zur Erzeugung eines Drehmomentes auf den Spannschuh 5 beim Spannvorgang aufweist. Dieses Drehmoment bewirkt eine Erhöhung der Andrückkraft auf das obere zu spannende Bandende und eine Verminderung der Einklemmkraft auf das untere Bandende.The carrier part 14 of the tensioning shoe 5 has a first guide part 17 provided for the lower strap end to be tensioned, a first effective surface 18 for generating a torque on the tensioning shoe 5 during the tensioning process. That torque causes an increase in the pressing force on the upper one Too exciting band end and a reduction in the pinching force to the lower end of the band.

Weiterhin ist der Trägerteil 14 des Spannschuhs 5 mit einem zweiten Führungsteil 19 für das obere zu spannende Bandende versehen, der eine zweite Wirkfläche 20 zur Erzeugung eines Drehmomentes auf den Spannschuh 5 nach dem Lösen der Wippe 6 bei gespanntem Band aufweist. Die Wirkflächen 18, 20 der beiden Führungsteile 17, 19 sind so dimensioniert, dass sich nach dem Lösen der Wippe 6 bei gespanntem Band der Spannschuh 5 dreht und dieser dabei zuerst das untere Bandende freigibt. Unmittelbar darauf wird das obere Bandende freigegeben. Auf diese Weise wird bei hoch gespannten Bändern eine Beschädigung des Verschlusses beim Lösen der Wippe 6 vermieden. Dabei gerät nämlich der noch ungespannte Bandteil zwischen dem Spannrad 8 und der Verschliesseinheit schlagartig unter Spannung, während der untere Bandteil noch immer unter Spannung steht. Da die beiden Bandteile bei der Verschliesseinheit in einem nicht vernachlässigbar kleinen Winkel aufeinandertreffen, wird auf die Schweissfläche des Verschlusses eine Kraft erzeugt, die zum Aufreissen des Verschlusses führen kann. Dies nun wird durch die obenerwähnte zeitliche Trennung der Freigabezeitpunkte der Bandenden verhindert.Furthermore, the carrier part 14 of the tensioning shoe 5 has a second guide part 19 for the upper band end to be tensioned provided a second active surface 20 for generating a Torque on the tensioning shoe 5 after loosening the rocker 6 with the belt tensioned. The active surfaces 18, 20 of the two Guide parts 17, 19 are dimensioned so that after loosening the rocker 6 with the band tensioned, the tensioning shoe 5 rotates and this first releases the lower end of the belt. Immediately afterwards the upper end of the band is released. On this way, damage is caused to high tensioned belts the closure when loosening the rocker 6 avoided. Here namely the still unstressed part of the band gets between the Tensioning wheel 8 and the closing unit suddenly under tension, while the lower part of the band is still under tension stands. Since the two belt parts in the sealing unit in meet at a not negligible angle, becomes a force on the welding surface of the closure generated, which can lead to the tearing of the closure. This is now due to the above-mentioned temporal separation of the Release times of the band ends prevented.

Die zweite Wirkfläche 20 ist vorteilhaft seitlich leicht nach aussen geneigt ausgeführt. Hierdurch entsteht nach dem Lösen der Wippe 6 durch das nun gespannte Bandteil zwischen dem Spannrad 8 und der Verschliesseinheit eine Kraftkomponente auf den Spannschuh 5, die das Lösen der Vorrichtung vom fertigen Umreifungsband erleichtert.The second active surface 20 is advantageously slightly laterally outside inclined. This creates after loosening the rocker 6 through the now tensioned band part between the Tensioning wheel 8 and the closing unit a force component on the tensioning shoe 5, which release the device from the finished Strapping relieved.

In der Figur 5 ist eine Seitenansicht einer weiteren Ausführungsform des Spannschuhs wiedergegeben. Der Spannschuh 5 weist einen in Spannrichtung 9 entlang einer mindestens teilweise schrägen Fläche 21 des Trägerteils 14 bewegbar gelagerten Gleitteil 22 auf. Dadurch wird ein Teil der vom Spannrad 8 erzeugten Tangentialkräfte in Radialkräfte umgewandelt. Somit wird beim Spannvorgang auf einfache Weise die Andrückkraft des Spannrades 8 auf das zu spannende Band erhöht und ein Durchdrehen des Spannrades 8 vermieden. Der Spannschuh 5 ist in dieser Ausführungsform nicht notwendigerweise schwenkbar gelagert.FIG. 5 is a side view of a further embodiment the tension shoe reproduced. The tension shoe 5 has one in the clamping direction 9 along at least partially inclined surface 21 of the support member 14 movably mounted Sliding part 22. This becomes part of the tension wheel 8 generated tangential forces converted into radial forces. Consequently the pressing force becomes simple during the clamping process the tensioning wheel 8 increased to the band to be tensioned and a spinning of the tensioning wheel 8 avoided. The tension shoe 5 is not necessarily pivotable in this embodiment stored.

Claims (14)

  1. Tensioning and sealing apparatus for strapping an article with a plastic tape, which apparatus comprises a housing (1) with a tensioning unit (3) for retaining two ends of the plastic tape which are to be sealed, and for tensioning the same, and with a sealing unit for connecting the two overlapping ends, whereby the tensioning unit (3) has a tensioning shoe (5) and a motor-drivable tensioning wheel (8) which is fastened on a pivotable rocker (6) and is intended for pressing the plastic tape against the tensioning shoe (5) and for gripping the same during rotation, and the axis of rotation of the pivotable rocker (6) is located between a bearing surface (10) of the tensioning shoe (5) and a base plate (2), on which the tensioning unit (3) and the sealing unit are fastened, and behind the bearing surface (10) of the tensioning shoe (5), as seen in the tensioning direction (9), the bearing surface (10) of the tensioning shoe (5) being mounted in a movable manner such that it is pressed against the tensioning wheel (8) during the tensioning operation by virtue of rotation of said tensioning wheel.
  2. Apparatus according to Claim 1, characterized in that the tensioning shoe (5) is mounted in a rotatable manner.
  3. Apparatus according to Claim 2, characterized in that the axis of rotation of the tensioning shoe (5) is the axis of rotation of the rocker (6).
  4. Apparatus according to one of Claims 1 to 3, characterized in that the tensioning shoe (5) has a sliding part (22) which can be moved in the tensioning direction (9) along an at least partially sloping surface (21) of a carrier part (14).
  5. Apparatus according to one of Claims 1 to 3, characterized in that the tensioning shoe (5) has a sliding part (15) which is fixed to a carrier part (14).
  6. Apparatus according to either of Claims 4 and 5, characterized in that the sliding part (15; 22) has a bearing surface (10) made of a low-friction plastic.
  7. Apparatus according to one of Claims 4 to 6, characterized in that the carrier part (14) of the tensioning shoe (5) is provided with a first guide part (17) which is intended for the bottom tape end and has a first operative surface (18) for subjecting the tensioning shoe (5) to a torque during the tensioning operation.
  8. Apparatus according to one of Claims 4 to 7, characterized in that the carrier part (14) of the tensioning shoe (5) is provided with a second guide part (19) which is intended for the top tape end and has a second operative surface (20) for subjecting the tensioning shoe (5) to a torque following release of the rocker (6), with the tape tensioned.
  9. Apparatus according to Claims 7 and 8, characterized in that the operative surfaces (18; 20) of the two guide parts (17; 19) are dimensioned such that following release of the rocker (6), with the tape tensioned, the tensioning shoe (5) rotates and, in the process, first of all releases the bottom tape end.
  10. Apparatus according to either of Claims 8 and 9, characterized in that the second operative surface (20) is designed such that it is inclined laterally in the outward direction.
  11. Apparatus according to one of Claims 1 to 10, characterized in that the tensioning wheel (8) can be driven with the aid of an electric motor or compressed-air motor (12).
  12. Apparatus according to Claim 11, characterized in that it is possible to adjust the torque of the drive motor (12) of the tensioning wheel (8).
  13. Apparatus according to either of Claims 11 and 12, characterized in that the drive motor (12) of the tensioning wheel (8) is arranged coaxially with the tensioning wheel (8).
  14. Apparatus according to one of Claims 11 to 13, characterized in that the drive motor (12) of the tensioning wheel (8) is connected to the tensioning wheel (8) via a gear mechanism arranged coaxially with the tensioning wheel (8).
EP96108154A 1995-05-26 1996-05-22 Tensioning and fixing device for tying an object with a plastic tape Expired - Lifetime EP0744343B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH157095 1995-05-26
CH1570/95 1995-05-26
CH157095 1995-05-26

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EP0744343A1 EP0744343A1 (en) 1996-11-27
EP0744343B1 true EP0744343B1 (en) 2000-08-16

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EP96108154A Expired - Lifetime EP0744343B1 (en) 1995-05-26 1996-05-22 Tensioning and fixing device for tying an object with a plastic tape

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EP (1) EP0744343B1 (en)
AT (1) ATE195476T1 (en)
DE (1) DE59605745D1 (en)

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Publication number Priority date Publication date Assignee Title
DE202016102835U1 (en) 2015-07-08 2016-06-08 LINDER GmbH Strapping device for securing a packaged goods
DE202015009004U1 (en) 2015-07-08 2016-06-10 LINDER GmbH Strapping device for securing a packaged goods

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DE59907362D1 (en) 1998-10-29 2003-11-20 Orgapack Gmbh Dietikon strapping tool
US11999516B2 (en) 2008-04-23 2024-06-04 Signode Industrial Group Llc Strapping device
KR101613251B1 (en) 2008-04-23 2016-04-18 시그노드 인터내셔널 아이피 홀딩스 엘엘씨 Strapping device with an electrical drive
JP2011518088A (en) 2008-04-23 2011-06-23 オルガパック ゲゼルシャフト ミット ベシュレンクテル ハフツング Banding device with tensioner
WO2009129633A1 (en) 2008-04-23 2009-10-29 Orgapack Gmbh Strapping device with a gear system device
US10518914B2 (en) 2008-04-23 2019-12-31 Signode Industrial Group Llc Strapping device
CN102026874A (en) 2008-04-23 2011-04-20 奥格派克有限公司 Mobile strapping device
RU2471688C2 (en) 2008-04-23 2013-01-10 Оргапак Гмбх Strapping device with energy accumulator
CH705743A2 (en) 2011-11-14 2013-05-15 Illinois Tool Works Strapper.
CN102530294A (en) * 2012-02-29 2012-07-04 秦皇岛西重所燕大重型机械研究院有限公司 End clamping and tightening device for metal tape
US9938029B2 (en) 2012-09-24 2018-04-10 Signode Industrial Group Llc Strapping device having a pivotable rocker
CH708294A2 (en) 2013-05-05 2014-12-15 Orgapack Gmbh Strapper.
EP3105126B1 (en) 2014-02-10 2018-07-11 Orgapack GmbH Tensioning device for a strapping device
USD864688S1 (en) 2017-03-28 2019-10-29 Signode Industrial Group Llc Strapping device

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DE3118711A1 (en) * 1981-05-12 1982-12-02 Cyklop International Emil Hoffmann KG, 5000 Köln DEVICE FOR TENSIONING A STRAP

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016102835U1 (en) 2015-07-08 2016-06-08 LINDER GmbH Strapping device for securing a packaged goods
DE202015009004U1 (en) 2015-07-08 2016-06-10 LINDER GmbH Strapping device for securing a packaged goods
DE102015111051A1 (en) 2015-07-08 2017-01-12 LINDER GmbH Strapping device for securing a packaged goods

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ATE195476T1 (en) 2000-09-15
EP0744343A1 (en) 1996-11-27
DE59605745D1 (en) 2000-09-21

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