EP0357902B1 - Device for tensioning and sealing a plastic tying strap - Google Patents

Device for tensioning and sealing a plastic tying strap Download PDF

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Publication number
EP0357902B1
EP0357902B1 EP89112094A EP89112094A EP0357902B1 EP 0357902 B1 EP0357902 B1 EP 0357902B1 EP 89112094 A EP89112094 A EP 89112094A EP 89112094 A EP89112094 A EP 89112094A EP 0357902 B1 EP0357902 B1 EP 0357902B1
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EP
European Patent Office
Prior art keywords
tensioning
wheel
strap
tensioning wheel
welding
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
EP89112094A
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German (de)
French (fr)
Other versions
EP0357902A1 (en
Inventor
Bruno Kägi
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 AG
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Strapex AG
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Filing date
Publication date
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Priority to AT89112094T priority Critical patent/ATE95475T1/en
Publication of EP0357902A1 publication Critical patent/EP0357902A1/en
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Publication of EP0357902B1 publication Critical patent/EP0357902B1/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
    • B65B13/20—Means for compressing or compacting bundles prior to bundling
    • 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

Definitions

  • the present invention relates to a device for tensioning and closing a plastic strapping around a packaged product.
  • the present invention has for its object to provide a device of the type mentioned, which allows a perfect and safe severing of the upper band section without damaging the same even with very tight strapping.
  • the second clamping device ensures that, after the band tension has been reduced in the section of the strapping band lying between the friction welding device and the tensioning wheel, the full tension is maintained in the remaining section of the strapping band which is guided around the packaged goods. Reducing the belt tension has the further advantage that the upper belt end is below a certain level for the friction welding process as well Tension is present, which is, however, less than the tension existing at the end of the tensioning process.
  • the tensioning wheel is a slotted wheel which allows the strapping to be tensioned with very great tensile force.
  • FIG. 1 shows a side view of a tensioning and closing device 2 placed on a package 1, which is used for tensioning and closing a plastic strapping 3 which is guided around the package 1.
  • the device 1 has a first clamping device 4 for holding the initial section 3a of the strapping band 3 located below.
  • This clamping device 4 consists of a lower clamping element 6 fastened on a base plate 5 and a movable clamping foot 7.
  • the device 2 is further provided with a friction welding device 8 which has an upper welding jaw 9 and a lower welding jaw 10.
  • the upper welding jaw 9 is designed as a lifting and lowering clamp 9.
  • the lower welding jaw 10 is mounted in a mounting part 11 fastened to the base plate 5 and can be driven back and forth transversely to the longitudinal direction of the strapping band 3 by means of a drive mechanism (not shown).
  • the structure of the friction welding device 8 and the drive mechanism for the lower welding jaw 10 is explained in more detail in the already mentioned EP-OS 0188720.
  • the friction welding device 8 is assigned a cutting knife 12, which is used to cut off the upper band section 3b behind the welding point. This separating knife 12 can be driven back and forth synchronously with the lower welding jaw 10, as is also set out in more detail in EP-OS 0188720.
  • a tensioning device 13 which has a slotted wheel 14 and a tensioning lever 15, which is shown in FIG. 1 in its lower end position.
  • the slot wheel 14 is provided with two slots 14a and 14b, which are at right angles to one another, for inserting the strapping band 3.
  • the friction welding device 8 is preceded by a second clamping device 16, consisting of a lower clamping plate 17 and a lowerable clamping foot 18.
  • a separating device 19 Seen in the belt tensioning direction A behind the slot wheel 14, a separating device 19 is arranged, which serves to move the tensioning wheel 14 towards a supply roll, not shown to cut the running strapping 3 after the closing process has been completed.
  • the tensioning lever 15 is provided at its free end with a rotary knob 20, by means of which a switching device (not shown in more detail) accommodated in the tensioning lever 15 can be actuated, the functioning of which will be discussed in more detail below.
  • FIGS. 2-4 there is a U-profile 21 on the base plate 5, which is fastened to the base plate 5 with its base part 22.
  • the side walls 23 and 24 of the U-profile 21 serve as end shields for a shaft 25 which carries the slot wheel 14 and a ratchet wheel 26.
  • Slotted wheel 14 and ratchet wheel 26 are firmly seated on the shaft 25 and can thus be rotated together.
  • the ratchet wheel 26 forms part of a locking mechanism 27, which further includes a pawl 28. This pawl 28 is pivotally mounted on an axis 29, which is in storage 30 is held.
  • the shaft 25 also carries a control disk 32 which is mounted on a hub 33 which is arranged on the shaft 25 in a freely rotatable manner.
  • the control disk 32 has a control cam 32a (FIG. 2) which serves to push the pawl 28 away against the force of the leg spring 31 and to disengage the nose 28a of the pawl 28 from the ratchet wheel 26.
  • a brake arrangement 34 (FIGS. 3 and 4) designed as a friction brake is arranged on the end of the shaft 25 opposite the slot wheel 14.
  • This brake arrangement 34 has a brake disk 35 which rotates with an extension 25a of the shaft 25 and which is pressed by means of plate springs 36 against a brake plate 37 which is anchored to the base plate 5.
  • the plate springs 36 are preloaded by means of a washer 38 and a screw 39.
  • the clamping device 16 is activated in a manner not shown in the figures after the end of the tensioning process, i.e. the clamping foot 18 lowered.
  • the tensioning lever 15 is pivoted again in the direction of arrow C into the starting position shown in FIG. 1, in which the switching device is actuated by turning the rotary knob 20.
  • This changeover device disengages one driver pawl from the ratchet wheel 26, which is prevented from turning back by the pawl 28.
  • the other driver pawl is brought into engagement with the control disk 32, which is now rotated counterclockwise (arrow F in FIG. 2) by pivoting the tensioning lever 15 again in the direction of arrow B.
  • the control disk 32 activates the second clamping device 16, which clamps the strapped strap 3 and holds the strap tension applied by the tensioning device 13.
  • the tensioning lever 15 is pivoted back into its lower end position in the direction of arrow C, with the result that the clamping devices 4 and 16 are released and the upper welding jaw 9 is raised .
  • the separating device 19 is actuated to remove the piece of tape 1 deformed in the region of the slotted wheel 14 from the tape supply cut off.
  • the slotted wheel 14 is rotated back into its starting position, in which an easy insertion of the strapping 3 is possible for the next tensioning and closing process. This positioning of the slot wheel 14 is explained in more detail in EP-OS 0284798.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Package Closures (AREA)
  • Refuse Collection And Transfer (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Cable Accessories (AREA)

Abstract

At the end of the tensioning operation, the uppermost section (3b) of the tying strap (3) is secured by means of a clamping device (16), which, relative to a friction welding device (8) lies opposite the slotted wheel (14) of a strap tensioning device (13). The return lock of the slotted wheel (14) is then released. The slotted wheel (14) is rotated backwards by the relaxing strap section (3c) between slotted wheel (14) and clamping device (16), counter to the tensioning direction (D). A friction brake arranged on the shaft of the slotted wheel (14) locks the slotted wheel (14) before the said strap section (3c) has completely relaxed. When the uppermost strap section (3b) is parted by a ripping knife (12), after the overlapping strap ends (3a', 3b') have been welded, this uppermost strap section (3b) is thus under a certain tensile stress, which however is less than the tensile stress after the completion of the tensioning operation. As a result a clean cut is achieved without damage to the tying strap (3). <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Gerät zum Spannen und Verschliessen eines um ein Packgut herum geführten Umreifungsbandes aus Kunststoff.The present invention relates to a device for tensioning and closing a plastic strapping around a packaged product.

Bei einem bekannten Gerät dieser Art wird nach erfolgtem Spannen des Umreifungsbandes die Bandspannung während des anschliessenden Verschweissens der sich überlappenden Bandenden und dem Durchtrennen des obenliegenden Bandendes durch die Bandspannvorrichtung, d.h. durch das gegen ein Rückwärtsdrehen gesicherte Spannrad, vollständig aufrechterhalten (EP-A- 0188720). Bei diesem Gerät besteht nun die Gefahr, dass beim Durchschneiden des unter grosser Spannung stehenden obenliegenden Bandendes kein sauberer Schnitt erfolgt und das Kunststoffband an der Schnittkante auffasert.In a known device of this type, after the strapping has been tensioned, the strap tensioning is carried out during the subsequent welding of the overlapping strap ends and the severing of the overhead strap end by the strap tensioning device, i.e. fully maintained by the tensioning wheel secured against reverse rotation (EP-A-0188720). With this device, there is now a risk that when cutting through the high-tension end of the tape at the top, no clean cut will be made and the plastic tape will unravel at the cutting edge.

In der nachveröffentlichten EP-A- 0284798 ist ein Gerät beschrieben, das dem vorstehend erwähnten Gerät in vielen Belangen sehr ähnlich ist, bei dem jedoch nach Beendigung des Spannvorganges das gespannte Umreifungsband in Spannrichtung gesehen vor der Reibschweisseinrichtung durch eine zweite Klemmeinrichtung festgehalten wird, die das Halten der Bandspannung übernimmt. Das Spannrad wird durch einen Steuermechanismus freigegeben und kann sich entgegen der Spannrichtung zurückdrehen. Dadurch wird der zwischen der erwähnten zweiten Klemmeinrichtung und dem Spannrad verlaufende obenliegende Bandabschnitt vollständig entlastet. Somit stehen beide sich überlappenden Bandabschnitte unter keiner Zugspannung, was es ermöglicht, dass sich diese Bandabschnitte seitlich gegeneinander verschieben können. In einem solchen Fall besteht nun die Gefahr, dass der obenliegende Bandabschnitt durch das Trennmesser nicht vollständig durchgetrennt wird.In the post-published EP-A-0284798 a device is described which is very similar in many respects to the device mentioned above, but in which, after the tensioning process has ended, the tensioned strapping strap is seen in the tensioning direction in front of the friction welding device by means of a second clamping device which holds it Keeping the tape tension takes over. The tensioning wheel is released by a control mechanism and can turn back against the tensioning direction. As a result, the overhead band section running between the mentioned second clamping device and the tensioning wheel is completely relieved. Thus, both overlapping band sections stand under no tension, which makes it possible for these belt sections to move laterally against one another. In such a case, there is now a risk that the band section above will not be completely cut by the cutting knife.

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, ein Gerät der eingangs genannten Art zu schaffen, das auch bei sehr stark gespanntem Umreifungsband ein einwandfreies und sicheres Durchtrennen des obenliegenden Bandabschnittes ohne Beschädigung desselben ermöglicht.The present invention has for its object to provide a device of the type mentioned, which allows a perfect and safe severing of the upper band section without damaging the same even with very tight strapping.

Die Aufgabe wird durch die Merkmale des Anspruches 1 gelöst.The object is solved by the features of claim 1.

Dieser Lösung liegt somit die Erkenntnis zugrunde, dass vor dem Durchtrennen des einen Bandabschnittes in diesem die Bandspannung vermindert werden muss, ohne jedoch diese Bandspannung vollständig abzubauen, um einen einwandfreien Schnitt zu erhalten. Der etwas unter Zug stehende Bandabschnitt lässt sich ohne Schwierigkeiten vollständig durchtrennen, ohne dass die Bandenden an der Schnittstelle zerstört, d.h. aufgerissen werden.This solution is therefore based on the knowledge that, prior to severing the one band section, the band tension in the band section must be reduced without completely reducing this band tension in order to obtain a perfect cut. The band section, which is somewhat under tension, can be completely severed without difficulty without destroying the band ends at the interface, i.e. be torn open.

Die zweite Klemmeinrichtung sorgt dafür, dass nach der Herabsetzung der Bandspannung im zwischen Reibschweisseinrichtung und Spannrad liegenden Abschnitt des Umreifungsbandes die volle Zugspannung im um das Packgut herum geführten übrigen Abschnitt des Umreifungsbandes aufrechterhalten wird. Das Vermindern der Bandspannung bringt weiter den Vorteil, dass auch für den Reibschweissvorgang das obere Bandende unter einer gewissen Zugspannung steht, die jedoch geringer ist als die am Ende des Spannvorganges herrschende Zugspannung.The second clamping device ensures that, after the band tension has been reduced in the section of the strapping band lying between the friction welding device and the tensioning wheel, the full tension is maintained in the remaining section of the strapping band which is guided around the packaged goods. Reducing the belt tension has the further advantage that the upper belt end is below a certain level for the friction welding process as well Tension is present, which is, however, less than the tension existing at the end of the tensioning process.

Die erfindungsgemässe Lösung bringt insbesondere dann Vorteile, wenn gemäss Anspruch 7 das Spannrad ein Schlitzrad ist, das ein Spannen des Umreifungsbandes mit sehr grosser Zugkraft erlaubt.The solution according to the invention is particularly advantageous if, according to claim 7, the tensioning wheel is a slotted wheel which allows the strapping to be tensioned with very great tensile force.

Ganz besonders kommen die Vorteile des Herabsetzens der Bandspannung zur Geltung, wenn, wie im Anspruch 9 definiert, zum Durchtrennen des obenliegenden Bandabschnittes ein Messer vorgesehen wird, das synchron mit der quer zur Bandlängsrichtung hin- und hergehend angetriebenen Schweissbacke bewegt wird.The advantages of reducing the belt tension come into play particularly when, as defined in claim 9, a knife is provided for severing the upper belt section, which knife is moved synchronously with the welding jaw driven back and forth transversely to the belt longitudinal direction.

Im folgenden wird ein Ausführungsbeispiel des Erfindungsgegenstandes anhand der Zeichnung näher erläutert. Es zeigt rein schematisch:

Figur
1 in Seitenansicht ein auf ein Packstück aufgesetztes Spann- und Verschliessgerät mit eingelegtem Umreifungsband,
Figur 2
eine Seitenansicht des Bereiches der Spanneinrichtung des Gerätes gemäss Fig.1, wobei gewisse Teile weggeschnitten sind,
Figur 3
einen Schnitt entlang der Linie III - III in Fig.2,
Figur 4
einen Schnitt entlang der Linie IV - IV in Fig. 2 und
Figur 5
ein den Verlauf der Bandspannung während des Spann- und Verschliessvorganges darstellendes Diagramm.
An exemplary embodiment of the subject matter of the invention is explained in more detail below with reference to the drawing. It shows purely schematically:
Figure
1 is a side view of a tensioning and closing device placed on a package with an inserted strapping band,
Figure 2
2 shows a side view of the area of the clamping device of the device according to FIG. 1, certain parts being cut away,
Figure 3
2 shows a section along the line III-III in FIG. 2,
Figure 4
a section along the line IV - IV in Fig. 2 and
Figure 5
a diagram illustrating the course of the belt tension during the tensioning and closing process.

In Figur 1 ist in Seitenansicht ein auf ein Packstück 1 aufgesetztes Spann- und Verschliessgerät 2 gezeigt, das zum Spannen und Verschliessen eines um das Packstück 1 herum geführten Umreifungsbandes 3 aus Kunststoff dient. Das Gerät 1 weist eine erste Klemmeinrichtung 4 zum Festhalten des untenliegenden Anfangsabschnittes 3a des Umreifungsbandes 3 auf. Diese Klemmeinrichtung 4 besteht aus einem auf einer Grundplatte 5 befestigten unteren Klemmelement 6 und einem beweglichen Klemmfuss 7. Das Gerät 2 ist im weiteren mit einer Reibschweisseinrichtung 8 versehen, die eine obere Schweissbacke 9 und eine untere Schweissbacke 10 aufweist. Die obere Schweissbacke 9 ist als heb- und senkbarer Klemmstempel 9 ausgebildet. Die untere Schweissbacke 10 ist in einem an der Grundplatte 5 befestigten Lagerungsteil 11 gelagert und mittels eines nicht dargestellten Antriebsmechanismus quer zur Längsrichtung des Umreifungsbandes 3 hin- und hergehend antreibbar. Der Aufbau der Reibschweisseinrichtung 8 und des Antriebsmechanismus für die untere Schweissbacke 10 ist in der bereits erwähnten EP-OS 0188720 näher erläutert. Der Reibschweisseinrichtung 8 ist ein Trennmesser 12 zugeordnet, das zum Abtrennen des obenliegenden Bandabschnittes 3b hinter der Schweissstelle dient. Dieses Trennmesser 12 ist synchron mit der unteren Schweissbacke 10 hin- und hergehend antreibbar, wie das ebenfalls in der EP-OS 0188720 ausführlicher dargelegt ist.FIG. 1 shows a side view of a tensioning and closing device 2 placed on a package 1, which is used for tensioning and closing a plastic strapping 3 which is guided around the package 1. The device 1 has a first clamping device 4 for holding the initial section 3a of the strapping band 3 located below. This clamping device 4 consists of a lower clamping element 6 fastened on a base plate 5 and a movable clamping foot 7. The device 2 is further provided with a friction welding device 8 which has an upper welding jaw 9 and a lower welding jaw 10. The upper welding jaw 9 is designed as a lifting and lowering clamp 9. The lower welding jaw 10 is mounted in a mounting part 11 fastened to the base plate 5 and can be driven back and forth transversely to the longitudinal direction of the strapping band 3 by means of a drive mechanism (not shown). The structure of the friction welding device 8 and the drive mechanism for the lower welding jaw 10 is explained in more detail in the already mentioned EP-OS 0188720. The friction welding device 8 is assigned a cutting knife 12, which is used to cut off the upper band section 3b behind the welding point. This separating knife 12 can be driven back and forth synchronously with the lower welding jaw 10, as is also set out in more detail in EP-OS 0188720.

Zum Spannen des Umreifungsbandes 3 ist eine Spanneinrichtung 13 vorhanden, die ein Schlitzrad 14 und einen Spannhebel 15 aufweist, der in Fig.1 in seiner unteren Endstellung gezeigt ist. Das Schlitzrad 14 ist mit zwei rechtwinklig zueinander stehenden Schlitzen 14a und 14b zum Einlegen des Umreifungsbandes 3 versehen. Der Reibschweisseinrichtung 8 vorgeschaltet ist eine zweite Klemmeinrichtung 16, bestehend aus einer unteren Klemmplatte 17 und einem senkbaren Klemmfuss 18. In Bandspannrichtung A gesehen hinter dem Schlitzrad 14 ist eine Trenneinrichtung 19 angeordnet, die dazu dient, das vom Spannrad 14 zu einer nicht dargestellten Vorratsrolle hin laufende Umreifungsband 3 nach beendigtem Schliessvorgang durchzutrennen. Der Spannhebel 15 ist an seinem freien Ende mit einem Drehknopf 20 versehen, mittels dem eine im Spannhebel 15 untergebrachte, nicht näher dargestellte Umschalteinrichtung betätigbar ist, auf deren Funktionsweise noch eingegangen werden wird.For tensioning the strapping 3 there is a tensioning device 13 which has a slotted wheel 14 and a tensioning lever 15, which is shown in FIG. 1 in its lower end position. The slot wheel 14 is provided with two slots 14a and 14b, which are at right angles to one another, for inserting the strapping band 3. The friction welding device 8 is preceded by a second clamping device 16, consisting of a lower clamping plate 17 and a lowerable clamping foot 18. Seen in the belt tensioning direction A behind the slot wheel 14, a separating device 19 is arranged, which serves to move the tensioning wheel 14 towards a supply roll, not shown to cut the running strapping 3 after the closing process has been completed. The tensioning lever 15 is provided at its free end with a rotary knob 20, by means of which a switching device (not shown in more detail) accommodated in the tensioning lever 15 can be actuated, the functioning of which will be discussed in more detail below.

Anhand der Figuren 2 - 4 soll nun der Aufbau der Spanneinrichtung und der Bandspannungshalteanordnung näher erläutert werden.The structure of the tensioning device and the belt tensioning arrangement will now be explained in more detail with reference to FIGS. 2-4.

Wie die Figuren 2 - 4 erkennen lassen, steht auf der Grundplatte 5 ein U-Profil 21, das mit seinem Bodenteil 22 an der Grundplatte 5 befestigt ist. Die Seitenwände 23 und 24 des U-Profils 21 dienen als Lagerschilder für eine Welle 25, die das Schlitzrad 14 sowie ein Klinkenrad 26 trägt. Schlitzrad 14 und Klinkenrad 26 sitzen fest auf der Welle 25 und sind somit miteinander verdrehbar. Das Klinkenrad 26 bildet einen Teil eines Sperrwerkes 27, zu dem weiter eine Sperrklinke 28 gehört. Diese Sperrklinke 28 sitzt schwenkbar auf einer Achse 29, die in einer Lagerung 30 gehalten ist. Auf die Sperrklinke 28 wirkt eine Schenkelfeder 31, die die Sperrklinke 28 an das Klinkenrad 26 andrückt, was zur Folge hat, dass ein Nase 28a der Sperrklinke 28 zwischen die Zähne 26a des Klinkenrades 26 eingreift und dieses und damit auch das Schlitzrad 14 gegen eine Rückwärtsdrehung im Uhrzeigersinn (Pfeil E in Fig.1) sichert.As can be seen in FIGS. 2-4, there is a U-profile 21 on the base plate 5, which is fastened to the base plate 5 with its base part 22. The side walls 23 and 24 of the U-profile 21 serve as end shields for a shaft 25 which carries the slot wheel 14 and a ratchet wheel 26. Slotted wheel 14 and ratchet wheel 26 are firmly seated on the shaft 25 and can thus be rotated together. The ratchet wheel 26 forms part of a locking mechanism 27, which further includes a pawl 28. This pawl 28 is pivotally mounted on an axis 29, which is in storage 30 is held. On the pawl 28 acts a leg spring 31, which presses the pawl 28 against the ratchet wheel 26, with the result that a nose 28a of the pawl 28 engages between the teeth 26a of the ratchet wheel 26 and this and thus also the slot wheel 14 against reverse rotation clockwise (arrow E in Fig. 1).

Die Welle 25 trägt weiterhin eine Steuerscheibe 32, die auf einer Nabe 33 angebracht ist, die frei drehbar auf der Welle 25 angeordnet ist. Die Steuerscheibe 32 weist einen Steuernocken 32a (Fig.2) auf, der dazu dient, die Sperrklinke 28 entgegen der Kraft der Schenkelfeder 31 wegzudrücken und die Nase 28a der Sperrklinke 28 ausser Eingriff mit dem Klinkenrad 26 zu bringen.The shaft 25 also carries a control disk 32 which is mounted on a hub 33 which is arranged on the shaft 25 in a freely rotatable manner. The control disk 32 has a control cam 32a (FIG. 2) which serves to push the pawl 28 away against the force of the leg spring 31 and to disengage the nose 28a of the pawl 28 from the ratchet wheel 26.

An dem dem Schlitzrad 14 gegenüberliegenden Ende der Welle 25 ist eine als Reibbremse ausgebildete Bremsanordnung 34 (Fig.3 und 4) angeordnet. Diese Bremsanordnung 34 weist eine mit einem Fortsatz 25a der Welle 25 mitdrehende Bremsscheibe 35 auf, die mittels Tellerfedern 36 gegen eine Bremsplatte 37 gedrückt wird, die an der Grundplatte 5 verankert ist. Die Tellerfedern 36 werden mittels einer Unterlagsscheibe 38 und einer Schraube 39 vorgespannt. Mit dieser Bremsanordnung 34 wird auf die Welle 25 und somit auf das Schlitzrad 14 ein gewisses Bremsmoment ausgeübt, zu dessen Ueberwindung ein dementsprechend höheres Drehmoment erforderlich ist, das durch am Schlitzrad 14 bzw. am Klinkenrad 26 angreifende Kräfte erzeugt wird.A brake arrangement 34 (FIGS. 3 and 4) designed as a friction brake is arranged on the end of the shaft 25 opposite the slot wheel 14. This brake arrangement 34 has a brake disk 35 which rotates with an extension 25a of the shaft 25 and which is pressed by means of plate springs 36 against a brake plate 37 which is anchored to the base plate 5. The plate springs 36 are preloaded by means of a washer 38 and a screw 39. With this brake arrangement 34, a certain braking torque is exerted on the shaft 25 and thus on the slitting wheel 14, to overcome which a correspondingly higher torque is required, which is generated by forces acting on the slitting wheel 14 or on the ratchet wheel 26.

Zum Fortschalten des Klinkenrades 26 und somit zum Drehen des Schlitzrades 14 im Gegenuhrzeigersinn, d.h. in Richtung des Pfeiles D (Fig.1), ist im Spannhebel 15 eine nicht dargestellte Mitnehmerklinke gelagert, die zum Eingreifen zwischen die Zähne 26a des Klinkenrades 26 bestimmt ist. Der Spannhebel 15 weist eine zweite, ebenfalls nicht dargestellte Mitnehmerklinke auf, die zum Drehen der Steuerscheibe 32 dient. Mittels der bereits erwähnten, im Spannhebel 15 untergebrachten Umschalteinrichtung, die durch Drehen des Drehknopfes 20 betätigt wird, wird jeweils eine der beiden Mitnehmerklinken mit dem Klinkenrad 26 bzw. der Steuerscheibe 32 in Eingriff gebracht. Aufbau und Wirkungsweise dieser Umschalteinrichtung ist in der erwähnten EP-OS 0188720 näher erläutert. Aus dieser EP-OS geht weiter hervor, dass die Steuerscheibe 32 auch zum Absenken der oberen Schweissbacke 9 zu Beginn des Schweissvorganges dient.For advancing the ratchet wheel 26 and thus for rotating the slotted wheel 14 counterclockwise, ie in the direction of arrow D (FIG. 1), there is one in the tensioning lever 15 Carrier pawl, not shown, which is intended to engage between the teeth 26a of the ratchet wheel 26. The tensioning lever 15 has a second driver pawl, also not shown, which serves to rotate the control disk 32. One of the two driver pawls is brought into engagement with the ratchet wheel 26 or the control disk 32 by means of the switching device, which is accommodated in the tensioning lever 15 and is actuated by turning the rotary knob 20. The structure and mode of operation of this switching device is explained in more detail in the aforementioned EP-OS 0188720. This EP-OS also shows that the control disk 32 also serves to lower the upper welding jaw 9 at the beginning of the welding process.

Mittels der Nockenscheibe 32 wird auf in den Figuren nicht näher dargestellte Weise nach Beendigung des Spannvorganges die Klemmeinrichtung 16 aktiviert, d.h. der Klemmfuss 18 abgesenkt.By means of the cam disk 32, the clamping device 16 is activated in a manner not shown in the figures after the end of the tensioning process, i.e. the clamping foot 18 lowered.

Die Funktionsweise des Gerätes 2 ist wie folgt:
Der Anfangsabschnitt 3a des Umreifungsbandes wird in die erste Klemmeinrichtung 4 eingelegt, die daraufhin geschlossen wird. Dann wird das Umreifungsband 3 um das Packstück 1 herumgelegt, durch die offene Klemmeinrichtung 16 geführt, zusammen mit dem untenliegenden Bandabschnitt 3a zwischen die Schweissbacken 9 und 10 eingeführt und dann in einen Schlitz 14a des Schlitzrades 14 und in die Trenneinrichtung 19 eingelegt, wie das in Figur 1 gezeigt ist. Durch Hochschwenken des Spannhebels 15 in Richtung des Pfeiles B und durch mehrmaliges Hin- und Herbewegen desselben erfolgt nun das Spannen des Umreifungsbandes 3, wie das in der EP-OS 0188720 ausführlicher erläutert ist.Device 2 works as follows:
The initial section 3a of the strapping is inserted into the first clamping device 4, which is then closed. Then the strapping 3 is placed around the package 1, passed through the open clamping device 16, inserted together with the strap section 3a below between the welding jaws 9 and 10 and then inserted into a slot 14a of the slot wheel 14 and into the separating device 19, as in FIG Figure 1 is shown. By swiveling the tensioning lever 15 in the direction of arrow B and repeatedly moving it back and forth, the strapping band 3 is now tensioned, as is explained in more detail in EP-OS 0188720.

Nach Beendigung des Spannvorganges wird der Spannhebel 15 in Richtung des Pfeiles C wieder in die in Figur 1 gezeigte Ausgangsstellung verschwenkt, in der durch Drehen des Drehknopfes 20 die Umschalteinrichtung betätigt wird. Durch diese Umschalteinrichtung wird die eine Mitnehmerklinke ausser Eingriff mit dem Klinkenrad 26 gebracht, das durch die Sperrklinke 28 am Zurückdrehen gehindert wird. Im weiteren wird die andere Mitnehmerklinke mit der Steuerscheibe 32 in Eingriff gebracht, die nun durch erneutes Hochschwenken des Spannhebels 15 in Richtung des Pfeiles B im Gegenuhrzeigersinn (Pfeil F in Fig.2) gedreht wird. Im Zuge dieser Drehung aktiviert die Steuerscheibe 32 die zweite Klemmeinrichtung 16, die das gespannte Umreifungsband 3 festklemmt und die durch die Spanneinrichtung 13 aufgebrachte Bandspannung hält.When the tensioning process has ended, the tensioning lever 15 is pivoted again in the direction of arrow C into the starting position shown in FIG. 1, in which the switching device is actuated by turning the rotary knob 20. This changeover device disengages one driver pawl from the ratchet wheel 26, which is prevented from turning back by the pawl 28. Furthermore, the other driver pawl is brought into engagement with the control disk 32, which is now rotated counterclockwise (arrow F in FIG. 2) by pivoting the tensioning lever 15 again in the direction of arrow B. In the course of this rotation, the control disk 32 activates the second clamping device 16, which clamps the strapped strap 3 and holds the strap tension applied by the tensioning device 13.

Der Verlauf der Spannung σ im Umreifungsband 3 in Abhängigkeit von der Zeit t ist im Diagramm gemäss Fig.5 dargestellt. Wie dieses Diagramm erkennen lässt, wird im Abschnitt zwischen dem Zeitpunkt t₀ und t₁ durch die Spanneinrichtung 13 im Umreifungsband 5 eine Bandspannung σ₁ erzeugt, die während des Abschnittes t₁ bis t₂ zuerst durch das Spannrad 13 und dann durch die Klemmeinrichtung 16 gehalten wird.The course of the tension σ in the strapping band 3 as a function of the time t is shown in the diagram according to FIG. As can be seen from this diagram, in the section between the time t₀ and t₁ by the tensioning device 13 in the strapping 5, a band tension σ₁ is generated, which is held during the section t₁ to t₂ first by the tensioning wheel 13 and then by the clamping device 16.

Beim Weiterdrehen der Steuerscheibe 32 kommt deren Steuernocken 32a zur Einwirkung auf die Sperrklinke 28, die dadurch ausser Eingriff mit dem Klinkenrad 26 gebracht wird. Damit wird das Schlitzrad 14 zur Drehung freigegeben. Durch das unter sehr grosser Spannung stehende Umreifungsband 3, das wie bereits erwähnt durch einen Schlitz 14a des Schlitzrades 14 geführt ist, wird nun das Spannrad 14 im Uhrzeigersinn, d.h. in Richtung des Pfeiles E (Fig.1), zurückgedreht, wodurch die Zugspannung im zwischen dem Schlitzrad 14 und der Klemmeinrichtung 16 verlaufenden Bandabschnitt 3c herabgesetzt wird. Dieses Herabsetzen der Bandspannung im Bandabschnitt 3c erfolgt im Zeitraum t₂ bis t₃ (Fig.5). Sobald das vom Umreifungsband 3 auf das Schlitzrad 14 ausgeübte Rückdrehmoment den Wert des Bremsmomentes erreicht hat, das durch die Bremsanordnung 34 auf die Welle 25 ausgeübt wird, wird das Schlitzrad 14 blockiert und gegen ein weiteres Zurückdrehen gesichert. Dieser Zustand wird im Zeitpunkt t₃ (Fig.5) erreicht. Im Bandabschnitt 3c verbleibt eine Restzugspannung σ₂ (Fig.5), die bis zum Abschluss des Verschliessvorganges (Zeitpunkt t₄) aufrechterhalten wird. Die Steuerscheibe 32 dreht sich noch etwas in Richtung des Pfeiles F weiter, was zur Folge hat, dass die obere Schweissbacke 9 abgesenkt und die untere Schweissbacke 10 in Bewegung versetzt wird. Nun erfolgt ein Verschweissen der übereinanderliegenden Bereiche 3a' und 3b' des Umreifungsbandes 3 in der Reibschweisseinrichtung 8. Während des Schweissvorganges wird mit dem Durchtrennen des obenliegenden Bandabschnittes 3b durch das Messer 12 begonnen, das wie bereits erwähnt, mit der unteren Schweissbacke 10 hin-und herbewegt wird, wie das in der schon mehrfach zitierten EP-OS 0188720 beschrieben ist.When the control disk 32 continues to rotate, its control cam 32a acts on the pawl 28, which is thereby disengaged from the ratchet wheel 26. The slot wheel 14 is thus released for rotation. The tensioning wheel 14 is now turned clockwise, ie in the direction of arrow E (FIG. 1), by the strapping band 3, which is under very high tension and which, as already mentioned, is guided through a slot 14a of the slot wheel 14 rotated back, thereby reducing the tension in the belt section 3c running between the slotted wheel 14 and the clamping device 16. This reduction of the band tension in the band section 3c takes place in the period t₂ to t₃ (Fig.5). As soon as the return torque exerted by the strapping 3 on the slot wheel 14 has reached the value of the braking torque which is exerted on the shaft 25 by the brake arrangement 34, the slot wheel 14 is blocked and secured against further turning back. This state is reached at time t₃ (Fig.5). In the band section 3c there remains a residual tensile stress σ₂ (Fig.5), which is maintained until the closing process (time t₄). The control disk 32 rotates a little further in the direction of the arrow F, with the result that the upper welding jaw 9 is lowered and the lower welding jaw 10 is set in motion. Now the superimposed areas 3a 'and 3b' of the strapping band 3 are welded in the friction welding device 8. During the welding process, the cutting of the upper band section 3b is started by the knife 12, which, as already mentioned, reciprocates with the lower welding jaw 10 is moved, as described in EP-OS 0188720, which has already been cited several times.

Nach Beendigung des Schweissvorganges und nach erfolgtem Durchtrennen des oberen Bandabschnittes 3b durch das Messer 12 wird der Spannhebel 15 in Richtung des Pfeiles C in seine untere Endstellung zurückverschwenkt, was zur Folge hat, dass die Klemmeinrichtungen 4 und 16 gelöst und die obere Schweissbacke 9 angehoben werden. Zudem wird die Trenneinrichtung 19 betätigt, um das im Bereich des Schlitzrades 14 deformierte Bandstück 1 vom Bandvorrat abzutrennen. Im weiteren wird das Schlitzrad 14 wieder in seine Ausgangsposition gedreht, in der ein leichtes Einlegen des Umreifungsbandes 3 für den nächsten Spann- und Verschliessvorgang möglich ist. Dieses Positionieren des Schlitzrades 14 ist in der EP-OS 0284798 ausführlicher erläutert.After the welding process has ended and after the upper band section 3b has been severed by the knife 12, the tensioning lever 15 is pivoted back into its lower end position in the direction of arrow C, with the result that the clamping devices 4 and 16 are released and the upper welding jaw 9 is raised . In addition, the separating device 19 is actuated to remove the piece of tape 1 deformed in the region of the slotted wheel 14 from the tape supply cut off. Furthermore, the slotted wheel 14 is rotated back into its starting position, in which an easy insertion of the strapping 3 is possible for the next tensioning and closing process. This positioning of the slot wheel 14 is explained in more detail in EP-OS 0284798.

Da während des Schweiss- und Schneidvorganges das zwischen dem Schlitzrad 14 und der Klemmeinrichtung 16 liegende Bandstück 3c unter einem gewissen Zug steht, der jedoch merklich kleiner ist als die am Ende des Spannvorganges auf das Umreifungsband 3 einwirkende Zugkraft, ist ein vollständiges Durchtrennen des obenliegenden Bandabschnittes 3b möglich, ohne dass die Bandenden an der Schnittstelle aufgerissen werden und ausfasern.Since during the welding and cutting process the band piece 3c lying between the slitting wheel 14 and the clamping device 16 is under a certain tension, which, however, is noticeably smaller than the tensile force acting on the strapping band 3 at the end of the tensioning process, a complete severing of the upper band section is required 3b possible without the tape ends at the interface being torn open and unraveling.

Anstelle der Bremsanordnung 34, die auf die das Schlitzrad 14 tragende Welle 25 ein gewisses Bremsmoment ausübt, sind andere Lösungen denkbar, die ein vollständiges Zurückdrehen des freigegebenen Schlitzrades 14 unter der Wirkung des sich entspannenden Umreifungsbandes 3 ermöglicht, so z.B. eine ein- und ausschaltbare oder überfahrbare Anschlagordnung, die den Drehwinkel des Schlitzrades 14 bei dessen Zurückdrehen begrenzt.Instead of the braking arrangement 34, which exerts a certain braking torque on the shaft 25 carrying the slitting wheel 14, other solutions are conceivable which allow the released slitting wheel 14 to be turned back completely under the action of the relaxing strapping 3, e.g. a stop arrangement that can be switched on and off or driven over, which limits the angle of rotation of the slot wheel 14 when it is turned back.

Daneben ist es auch denkbar, die Bandspannungshalteeinrichtung vom Spannrad (Schlitzrad) vollständig getrennt auszubilden, so dass diese Bandspannungshalteeinrichtung nicht über das Schlitzrad 14, sondern z.B. direkt auf den Bandabschnitt 3c zur Einwirkung kommt.In addition, it is also conceivable to design the belt tensioning device completely separate from the tensioning wheel (slot wheel), so that this tape tensioning device does not use the slot wheel 14, but e.g. comes directly to the band section 3c.

Claims (9)

  1. A device for tensioning and sealing a strap (3) of synthetic plastics material for encircling a package (1), comprising a first clamping means (4) for gripping the bottom initial portion (3a) of the encircling strap (3), a tensioning wheel (14) intended for gripping the top portion (3b) of the encircling strap (3) for tensioning the latter, a friction welding means (8) which, viewed in the direction of tensioning (A), preceding the tensioning wheel (14), and being provided with two welding jaws (9, 10) adapted for movement in relation to each other for the connection of overlapping portions (3a', 3b') of the encircling strap (3), and, upstream when viewed in the tensioning direction (A) of the friction welding means (8), a second clamping means (16) which can be activated upon completion of the tensioning process, for securely gripping the upper portion (3b) of the encircling strap (3), and with a relieving arrangement (32, 34) adapted to be brought into action on the tensioning wheel (14) upon completion of the clamping process, and which brings about a relieving of the tractive force exerted on the encircling strap (3) by the tensioning wheel (14) at the end of the tensioning process so that, when viewed in the direction of tensioning (A), in the portion (3c) of the encircling strap (3) which is behind the friction welding means (8) a residual tension (σ 2) is maintained which is less than the tractive stress (σ 1) in the encircling strap (3) at the end of the tensioning process and with a separating means (12) disposed between the friction welding means (8) and the tensioning wheel (14) for parting the upper portion (3b) of the encircling strap (3) once welding of the latter is completed.
  2. A device according to Claim 1, characterised in that the relieving arrangement comprises a control arrangement (32) for releasing the tensioning wheel (14) after activation of the second clamping means (16) and a braking arrangement (34) which can be caused to act on the tensioning wheel (14) and which after a certain rotation of the released tensioning wheel (14) responds under the effect of the tensioned encircling strap (3) and secures the tensioning wheel (14) against any further reverse rotation.
  3. A device according to Claim 2, characterised in that the tensioning wheel (14) is coupled to a locking mechanism (27) which secures it against any reverse rotation and which can be released upon completion of the tensioning process and after activation of the second clamping means (16) by the control arrangement (32).
  4. A device according to Claim 3, characterised in that the locking mechanism comprises, connected in rotationally rigid fashion to the tensioning wheel (14), a ratchet wheel (26) and engaging this latter a detent (28) which for its release acts upon a control means (32), preferably a control disc, of the control arrangement.
  5. A device according to Claim 2, characterised in that the braking arrangement is a friction brake (34) which acts on the shaft (25) of the tensioning wheel (14).
  6. A device according to Claim 5, characterised in that to generate a given braking moment, the friction brake (34) has braking means (35, 37) which are applied with a corresponding force and of which one braking member (35) is seated on the shaft (25) of the tensioning wheel (14) while the other braking means (37) is rigidly mounted.
  7. A device according to one of Claims 1 to 6, characterised in that the tensioning wheel is a slotted wheel (14) with at least one slot (14a, 14b) intended for insertion of the encircling band (3).
  8. A device according to one of Claims 1 to 7, characterised in that the upper welding jaw (9) is constructed as a clamping means which can be raised and lowered, the lower welding jaw (10) being capable of being driven in a reciprocating fashion.
  9. A device according to Claim 1 or 8, characterised in that one and preferably the bottom welding jaw (10) can be driven crosswise to the longitudinal direction of the strip and in that the separating means (12) has a cutter adapted for joint movement in synchronism with this welding jaw (10).
EP89112094A 1988-09-08 1989-07-03 Device for tensioning and sealing a plastic tying strap Expired - Lifetime EP0357902B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112094T ATE95475T1 (en) 1988-09-08 1989-07-03 TENSIONING AND SEALING DEVICE FOR PLASTIC STRAPPING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3364/88 1988-09-08
CH336488 1988-09-08

Publications (2)

Publication Number Publication Date
EP0357902A1 EP0357902A1 (en) 1990-03-14
EP0357902B1 true EP0357902B1 (en) 1993-10-06

Family

ID=4254376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112094A Expired - Lifetime EP0357902B1 (en) 1988-09-08 1989-07-03 Device for tensioning and sealing a plastic tying strap

Country Status (8)

Country Link
US (1) US5058365A (en)
EP (1) EP0357902B1 (en)
JP (1) JPH02109814A (en)
KR (1) KR900004598A (en)
AT (1) ATE95475T1 (en)
DE (1) DE58905827D1 (en)
DK (1) DK422089A (en)
PT (1) PT91626B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4109295A1 (en) * 1991-02-07 1992-08-13 Leonische Drahtwerke Ag METHOD FOR PRODUCING A WIRING HARNESS AND DEVICE THEREFOR
JPH0596226U (en) * 1992-06-01 1993-12-27 日本建鐵株式会社 Water-stop structure of grit curtain wall
US5355913A (en) * 1992-10-09 1994-10-18 United States Surgical Corporation Surgical repair device
US5417698A (en) * 1992-10-09 1995-05-23 United States Surgical Corporation Apparatus for tightening elongated wound closure elements
DE9316072U1 (en) * 1993-10-21 1994-01-05 Cyklop GmbH, 50996 Köln Device for tensioning and closing strapping
US5996314A (en) * 1996-05-22 1999-12-07 Currency Systems International, Inc. Currency strapping machine
EP0999133B1 (en) * 1998-10-29 2003-04-16 Orgapack GmbH Strapping device
DE19909620A1 (en) * 1999-03-05 2000-09-07 Cyklop Gmbh Device for tensioning and closing strapping
US6412257B1 (en) * 2000-08-28 2002-07-02 Tekpak Corporation Portable and manual binding device
US6684761B2 (en) * 2002-06-11 2004-02-03 Hsiu-Man Yu Chen Strapping packaging device
DE102006010912A1 (en) * 2006-03-09 2007-09-13 Greiner Gmbh & Co Kg Device for tensioning a band
US8323294B2 (en) * 2007-08-21 2012-12-04 Depuy Spine, Inc. Tether tensioning instrument
US9221567B2 (en) 2012-01-25 2015-12-29 Southern Bracing Systems Enterprises, Llc Systems, methods, and devices for tensioning straps
CN103640724A (en) * 2013-12-04 2014-03-19 吴江市信港纸箱厂 Hot pressing and connecting forming device for polyester packing belt

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982069A (en) * 1958-04-21 1961-05-02 England Victor Strapping device and method
US3269300A (en) * 1964-12-29 1966-08-30 Fmc Corp Strapping machine
US3447447A (en) * 1967-02-21 1969-06-03 Stanley Works Strapping mechanism
US3566778A (en) * 1969-01-27 1971-03-02 Signode Corp Strap feeding and tensioning system
US4050372A (en) * 1976-01-21 1977-09-27 Signode Corporation Automatic strapping machine
JPS5727852A (en) * 1980-07-25 1982-02-15 Cyklop Strapping Corp Strap stretcher
CH664732A5 (en) * 1984-12-27 1988-03-31 Strapex Ag DEVICE FOR CONNECTING THE ENDS OF A THERMOPLASTIC PLASTIC TAPE.
CH665604A5 (en) * 1985-01-23 1988-05-31 Strapex Ag TENSIONING AND LOCKING DEVICE FOR PLASTIC TAPE.
DE3862666D1 (en) * 1987-03-20 1991-06-13 Strapex Ag TENSIONER FOR A PACKING TAPE.

Also Published As

Publication number Publication date
DK422089D0 (en) 1989-08-28
PT91626A (en) 1990-03-30
KR900004598A (en) 1990-04-12
DE58905827D1 (en) 1993-11-11
US5058365A (en) 1991-10-22
PT91626B (en) 1995-07-18
DK422089A (en) 1990-03-09
ATE95475T1 (en) 1993-10-15
EP0357902A1 (en) 1990-03-14
JPH02109814A (en) 1990-04-23

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