EP0930997B1 - Cable binding tool - Google Patents

Cable binding tool Download PDF

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Publication number
EP0930997B1
EP0930997B1 EP97911200A EP97911200A EP0930997B1 EP 0930997 B1 EP0930997 B1 EP 0930997B1 EP 97911200 A EP97911200 A EP 97911200A EP 97911200 A EP97911200 A EP 97911200A EP 0930997 B1 EP0930997 B1 EP 0930997B1
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EP
European Patent Office
Prior art keywords
belt
support rollers
tightening roller
tool according
force
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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
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EP97911200A
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German (de)
French (fr)
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EP0930997A1 (en
Inventor
Viktor Kurmis
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HellermannTyton GmbH
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HellermannTyton GmbH
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Publication of EP0930997A1 publication Critical patent/EP0930997A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00Bundling articles
    • B65B13/02Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/025Hand-held tools
    • B65B13/027Hand-held tools for applying straps having preformed connecting means, e.g. cable ties

Definitions

  • the invention relates to a tool for binding a ribbon around an object, especially a wire harness, the one Tensioning device for the tough elastic, rigid band contains.
  • the tensioning device comprises a toothed tensioning roller and a the tape on the opposite of the tension roller Side support roller abutment.
  • the tension pulley is during of the clamping process constantly driven and rotating continues even if a predetermined one is reached Tension the tape stands still and is cut off.
  • the invention is based, with such an object Tool as mentioned in the preamble of claim 1 to improve the reproducibility of the belt tension and her To prevent slackening during the tensioning process.
  • the abutment is formed by at least two support rollers, which are arranged one behind the other on the circumference of the tensioning roller and are pressed against the tension pulley by spring force. She cause the tape not only in the points of contact of the Support rollers is pressed against the tension roller, but due to its bending resistance throughout the section between.
  • the tension pulley is therefore not only quasi punctiform, but over an extended one, from the support rollers limited distance together with the band. This has the consequence that the pressure force, i.e. the force with which the tape per unit length pressed against the circumference of the tension pulley is lowered, and consequently the teeth of the Tension roller not or hardly at all when the belt is at a standstill intervene in the strip material.
  • the ratio between that at the support rollers pressure force and in the area between the support rollers acting pressure force may not be constant. It is sufficient in these cases, if the arrangement is made such that there is a setting within the setting range is where the unit of length between the tape and the Extent of the tensioning roller acting force on the support rollers approximately is as big as between them. You choose the arrangement expediently so that when setting a low Band tension is the force per unit length between the band and the circumference of the tensioning roller acts on the support rollers is less than between them. You can with the Support rollers even go to zero.
  • Their angular distance in relation to the tensioning roller is preferably 30-70 °, more preferably 40-60 °. It can also a larger number of support rollers can be provided.
  • the tension with which the tape between the support rollers on The circumference of the tension pulley depends on the diameter the tensioning roller and the angular distance of the support rollers. The smaller these dimensions are, the larger it is. To the others this force depends on the resistance the tape has opposed to its corresponding bend. This is again depending on the elastic modulus of the strip material and the Moment of inertia of the belt cross section. It is easy to do this To vary parameters in such a way based on experiments that the desired pressure force is reached.
  • the reproducibility of the belt tension also depends on the Tooth shape. It has proven to be useful if the leading flank of the teeth in the direction from the tooth flow to the Tooth tip inclined backwards in the direction of rotation of the tension pulley is. This ensures that the teeth are less likely to cut or chop into the tape material, but to slide over it. The abrasion is corresponding less.
  • the flank angle of the teeth is expediently between 10 ° and 45 ° to the band normal, more preferably between 18 ° and 30 °. Nonetheless, should the teeth are pointed in cross section.
  • the invention When using tapes that are smooth and smooth on one side are serrated on the other hand, the invention performs independently of good results whether the teeth of the tension pulley interact with the smooth or serrated side of the belt. However, interaction with the toothed is preferred Page.
  • the front part of a so-called cable tie tool is shown, whose tool body 1 on his forehead one of the parts 2 and 3 formed wrap, which a bundle of cables 4 receives as an object to be bound to to loop around the cable strap 5.
  • This points at its end a lock 6, through the opening of the free end 7 of Cable tape is guided and contains a pawl that cooperating with a serration of the cable band its return movement prevented by the lock.
  • the cable tie around the cable harness 4 is looped, there is the lock 6 in a lock holder of the lock, not shown predetermined position of the same.
  • the free end 7 through the lock is passed through, it goes straight into the Clamping device 8, which detects it and around the wiring harness 4 tightens. Does the cable tie have sufficient tension reached, the part protruding from the lock 6 is through cut off a device indicated by an arrow at 9, and the tied wire harness can the pliers 2, 3 be removed.
  • the tensioning device 8 consists of a tensioning roller 10 which stored in a fixed position in the tool body 1 and in the direction of the arrow can be driven in rotation, and two support rollers 11 which the band end to be grasped and exciting 7 against the Press tension roller 10.
  • the support rollers 11 are on one Swing arm 12 mounted around a fixed in the tool body 1
  • Axis 13 is pivotable and counterclockwise by a spring 14 is acted upon.
  • the force of the spring can be achieved by means of an adjusting screw 15 can be changed.
  • a stop 17 gives the distance of the support rollers 11 from the circumference of the tension roller 10 before if there is no band 7 in between. The distance is set so that the thinner, free Belt end between the tension roller 10 and the one initially reached Support roller 11 can be detected. It is less than that Band in its part following the thinner tip.
  • the tension roller 10 is provided with teeth, which are preferably are sharp-edged.
  • the diameter of the tension roller 10 is expediently a multiple of the strip thickness. Preferably it’s three to ten times bigger.
  • the diameter of the support rollers 11 is of the same order of magnitude as that of Tension pulley 10.
  • the tape material is expediently more elastic Plastic, especially polyamide.
  • the tape lies on the toothed circumference of the tension roller 10 the sheet (19) determined by the support rollers 11.
  • the Extent of its bend and its resistance to this bend Rigidity determine the strength of the system in the middle area this route.
  • the force (arrow 18) with which the Support rollers 11 are pressed against the belt is determined by adjusting the spring 14.
  • the spring force can be the force with which the tape is in the immediate vicinity Support area of the support rollers 11 against the surface the tension pulley is pressed, be less than the force in the middle of the investment route; this applies to high spring force Opposite.
  • the tape will be attached to the Tensioner roller 10 over a considerable distance under simultaneous Engagement of several idler teeth instead.
  • the tensioning device After the introduction to the The tensioning device is initially conveyed from the tensioning roller without slippage. If it tightly surrounds the item to be bound, His tension grows steeply until it finally becomes that big will that the friction force applied by the tensioning roller 10 equal. At this moment the tape stops while the tensioning roller 10 continues to run through its on the Belt surface exerted friction force maintains the tension.
  • the band tension at which this condition occurs is depending on the setting of the spring 14. Using the adjusting screw 15 can therefore be the belt tension to be achieved can be set.
  • the Cutting device 9 switched on.
  • the drive of the tension pulley 10 can then be ended as soon as the cut Tape end 7 is ejected.
  • the time at which the cut takes place is set so that just the number of revolutions of the Tensioner 10 could take place for the passage of the Longest possible cable ties with the smallest possible cable harness diameter necessary is. Unnecessarily long rubbing and Wear of the tensioning roller 10 is thereby avoided.
  • a guide bar 16 may be provided during the insertion process the belt tip from the nip at the first Tension roller 11 to the nip on the second tension roller 11 directs.
  • the diameter was the tension pulley (measured up to the tooth tips) 8 mm.
  • the The diameter of the support rollers was 7 mm.
  • the angular distance the support rollers, based on the axis of the Tension pulley was about 53 °.
  • the scope of the tension pulley was provided with 20 sharp-edged teeth, their flank angles compared to the radius was 23 °. It became a polyamide tape with a thickness (including serration) of 1.15 mm and one Width of 2.6 mm processed.
  • the toothed side of the Band was turned to the tension pulley.
  • the band tension was about 80N. On that one Place the belt where the tensioning roller is opposite the belt slipped, the teeth of the band were over one Line of slightly more than 4 mm in length is squeezed evenly and rubbed off. At the ends of this route where the support rollers had worked, the deformation was little greater than in the middle of this route.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Package Frames And Binding Bands (AREA)
  • Cable Accessories (AREA)
  • Processing Of Terminals (AREA)
  • Clamps And Clips (AREA)
  • Buckles (AREA)

Description

Die Erfindung betrifft ein Werkzeug zum Binden eines Bandes um einen Gegenstand, insbesondere um einen Kabelbaum, das eine Spanneinrichtung für das zähelastische, biegesteife Band enthält. Die Spanneinrichtung umfaßt eine gezahnte Spannrolle und ein das Band auf der der Spannrolle gegenüberliegende Seite abstützendes Rollen-Widerlager. Die Spannrolle ist während des Spannvorgangs ständig angetrieben und dreht sich auch dann weiter, wenn beim Erreichen einer vorbestimmten Bandspannung das Band stillsteht und abgeschnitten wird.The invention relates to a tool for binding a ribbon around an object, especially a wire harness, the one Tensioning device for the tough elastic, rigid band contains. The tensioning device comprises a toothed tensioning roller and a the tape on the opposite of the tension roller Side support roller abutment. The tension pulley is during of the clamping process constantly driven and rotating continues even if a predetermined one is reached Tension the tape stands still and is cut off.

Bei einem bekannten Werkzeug dieser Art (EP-A 432477) sind die Spannrolle und das von einer einzelnen Stützrolle gebildete Rollen-Widerlager mit konstantem Achsabstand miteinander verbunden. Die scharfen Zähne der Spannrolle greifen in die Oberfläche des aus zähelastischem Kunststoff bestehenden Bandes ein. Erreicht es seine vorbestimmte Bandspannung, so reicht die von den Zähnen der Spannrolle auf das Band ausgeübte Zugkraft nicht mehr dazu aus, es weiterzubewegen; es steht still und die Zähne der Spannrolle fräsen sich in die Bandoberfläche ein. Zwar führt dies zu recht gut reproduzierbaren Werten der Bandspannung, weil diese unabhängig ist von zufälligen Reibungseinflüssen an der Bandoberfläche; jedoch stört der Bandabrieb. Auch läßt während des Stillstands des Bands mit zunehmendem Abrieb desselben die von der Spannrolle darauf ausgeübte Kraft nach, so daß es zu einer geringfügigen Rückbewegung des Bandes kommen kann, die aber in manchen Fällen dazu ausreicht, einen sauberen und knappen Schnitt des überstehenden Bandendes zu erschweren.In a known tool of this type (EP-A 432477) the tension roller and that formed by a single support roller Roller abutments with a constant center distance connected. The sharp teeth of the tension pulley reach into the Surface of the band made of tough elastic plastic on. If it reaches its predetermined band tension, so reaches the one exerted on the belt by the teeth of the tension pulley Traction no longer to move it on; it stands still and the teeth of the tension pulley cut into the Belt surface. Although this leads to quite reproducible Band tension values because it is independent of accidental friction on the belt surface; however disturbs the belt abrasion. Also lets during the standstill of Bands with increasing abrasion of the same from the tension pulley force exerted thereupon, so that there is a slight Back movement of the belt can come, but in some cases it is sufficient to have a clean and tight cut of the to complicate protruding band end.

Ferner sind Bandspannwerkzeuge bekannt (EP-A-371 290, US-A-4 610 067), bei welchen die zu erreichende Grenzspannung mittels einer Rutschkupplung an der Spannrolle eingestellt wird. Bei dieser Werkzeugart muß dafür gesorgt werden, daß das Band gegenüber der Spannrolle nicht durchrutscht, weil sonst die Erreichung der gewünschten Bandspannung nicht gewährleistet ist. Für eine sichere Haftung des Bands an der Spannrolle wird dadurch gesorgt, daß eine Mehrzahl von Stützrollen vorgesehen ist, die das Band gegen den Umfang der Spannrolle pressen. Da es aufwendig ist, eine besondere Rutschkupplung vorzusehen, geht die vorliegende Erfindung von dem zuvor erläuterten Stand der Technik aus, bei dem vorgesehen ist, daß das Durchrutschen beim Erreichen der angestrebten Bandspannung zwischen dem Band und der Spannrolle stattfindet.Belt tensioning tools are also known (EP-A-371 290, US-A-4 610 067), for which the limit voltage to be achieved is a slip clutch is set on the tension pulley. With this type of tool it must be ensured that the belt does not slip against the tensioning pulley, otherwise the Reaching the desired belt tension is not guaranteed is. For a secure adhesion of the tape to the tension pulley is ensured by providing a plurality of support rollers which is the tape against the circumference of the tension pulley press. Because it is expensive, a special slip clutch To provide, the present invention proceeds from that previously explained State of the art, which provides that the slipping when the desired tension is reached between the belt and the tensioner.

Der Erfindung liegt die Aufgabe zugrunde, bei einem solchen Werkzeug, wie es im Oberbegriff des Anspruchs 1 genannt ist, die Reproduzierbarkeit der Bandspannung zu verbessern und ihr Nachlassen während des Spannvorgangs zu verhindern. The invention is based, with such an object Tool as mentioned in the preamble of claim 1 to improve the reproducibility of the belt tension and her To prevent slackening during the tensioning process.

Die erfindungsgemäße Lösung besteht in den Merkmalen des Anspruchs 1 und vorzugsweise denjenigen der Unteransprüche.The solution according to the invention consists in the features of the claim 1 and preferably that of the subclaims.

Das Widerlager wird von wenigstens zwei Stützrollen gebildet, die am Umfang der Spannrolle hintereinander angeordnet sind und durch Federkraft gegen die Spannrolle gedrückt sind. Sie bewirken, daß das Band nicht nur in den Berührungspunkten der Stützrollen gegen die Spannrolle gedrückt wird, sondern aufgrund seines Biegewiderstands auch in dem gesamten Abschnitt dazwischen. Die Spannrolle wirkt daher nicht nur quasi punktförmig, sondern über eine ausgedehnte, von den Stützrollen begrenzte Strecke mit dem Band zusammen. Dies hat die Konsequenz, daß die Andruckkraft, d.h. die Kraft, mit der das Band je Längeneinheit gegen den Umfang der Spannrolle gedrückt wird, gesenkt werden kann und demzufolge die Zähne der Spannrolle beim Stillstand des Bandes nicht oder kaum noch spanabhebend in das Bandmaterial eingreifen. Es bleibt in der Regel bei entsprechenden oberflächlichen Verformungen. Dieses Ergebnis ist deshalb überraschend, weil die Erfahrung gezeigt hat, daß der Einfluß wechselnder Oberflächenbeschaffenheit (Feuchte, Verschmutzung, Fettbelag) sich um so weniger auf die Reibkraft auswirkt, je größer die Kraft je Flächeneinheit ist, weil dann höhere Wahrscheinlichkeit dafür besteht, daß etwaige Unreinheiten von den Zähnen der Spannrolle durchstoßen werden und lediglich die Eigenschaften des Bandmaterials sich auf die Reibkraft auswirken. Dieser Grundsatz ist zwar richtig, und es würde zu starken Schwankungen der Bandspannung kommen, wenn man mit lediglich einer Stützrolle und mäßiger Andruckkraft arbeiten würde. Dadurch aber, daß erfindungsgemäß der Umfangsbereich der Spannrolle vergrößert wird, auf welchem die Spannkraft übertragen wird, und daher eine Vielzahl von Zähnen der Spannrolle hintereinander zum Einsatz kommt, gleichen sich Eingriffsunterschiede, die an den einzelnen Zähnen vorkommen mögen, statistisch aus.The abutment is formed by at least two support rollers, which are arranged one behind the other on the circumference of the tensioning roller and are pressed against the tension pulley by spring force. she cause the tape not only in the points of contact of the Support rollers is pressed against the tension roller, but due to its bending resistance throughout the section between. The tension pulley is therefore not only quasi punctiform, but over an extended one, from the support rollers limited distance together with the band. This has the consequence that the pressure force, i.e. the force with which the tape per unit length pressed against the circumference of the tension pulley is lowered, and consequently the teeth of the Tension roller not or hardly at all when the belt is at a standstill intervene in the strip material. It stays in the Rule for corresponding superficial deformations. This The result is surprising because the experience is shown has the influence of changing surface conditions (Moisture, dirt, grease coating) the less the greater the force per unit area, the greater the force is because then there is a higher probability that pierce any impurities from the teeth of the tension pulley and only the properties of the strip material affect the frictional force. This principle is true correct, and there would be large fluctuations in the belt tension come if you only have a support roller and moderate Pressure force would work. But in that according to the invention the circumferential area of the tension pulley is increased, on which the clamping force is transmitted, and therefore one Variety of Teeth of the idler pulley are used one after the other engagement differences that occur on the individual teeth may appear statistically.

Zwar ist es vorteilhaft, wenn die Andruckkraft über die gesamte Strecke möglichst gleichbleibend ist; um so besser wirkt der statistische Ausgleich der Reibverhältnisse an den einzelnen Zähnen. Strenge Konstanz ist aber nicht erforderlich. Es genügt, wenn die Andruckkraft über den Verlauf der Strecke oder wesentlicher Teile dieser Strecke in gleicher Größenordnung liegt. Gleiche Größenordnung besagt, daß die Unterschiede über das Verhältnis 1:10 nicht hinausgehen. Sie liegen vorzugsweise unter 1:3.It is advantageous if the pressure force over the entire Route is as constant as possible; all the better does the statistical balance of the frictional relationships on the individual teeth. Strict constancy is not necessary. It is sufficient if the pressure force over the course of the Route or essential parts of this route in the same Order of magnitude. The same order of magnitude says that the Differences do not go beyond the 1:10 ratio. she are preferably below 1: 3.

Wenn die von den Stützrollen auf das Band ausgeübte Kraft verstellbar ist, um die erstrebte Bandspannung einstellen zu können, kann das Verhältnis zwischen der bei den Stützrollen wirkenden Andruckkraft und der im Bereich zwischen den Stützrollen wirkenden Andruckkraft nicht konstant sein. Es genügt in diesen Fällen, wenn die Anordnung so getroffen ist, daß innerhalb des Einstellbereichs eine Einstellung vorhanden ist, bei der die je Längeneinheit zwischen dem Band und dem Umfang der Spannrolle wirkende Kraft bei den Stützrollen etwa ebenso groß ist wie zwischen diesen. Dabei wählt man die Anordnung zweckmäßigerweise so, daß bei Einstellung einer niedrigen Bandspannung die Kraft, die je Längeneinheit zwischen dem Band und dem Umfang der Spannrolle wirkt, bei den Stützrollen geringer als zwischen diesen ist. Sie kann bei den Stützrollen sogar auf Null gehen. Wenn eine maximale Bandspannung eingestellt wird und demzufolge die Stützrollen mit maximaler Kraft gegen das Band pressen, soll immer noch der zwischen den Stützrollen befindliche Bereich des Bandes erheblich zu der zwischen der Spannrolle und dem Band wirkenden Reibkraft beitragen. Die Anordnung wird deshalb zweckmäßigerweise so getroffen, daß bei hoher eingestellter Bandspannung die zwischen dem Band und dem Umfang der Spannrolle wirkende Andruckkraft im Bereich der Stützrollen die Andruckkraft erreicht, die im Bereich zwischen den Stützrollen herrscht, oder diese ein wenig übersteigt, ohne dieselbe Größenordnung zu verlassen.When the force exerted by the support rollers on the belt is adjustable to adjust the desired band tension can, the ratio between that at the support rollers pressure force and in the area between the support rollers acting pressure force may not be constant. It is sufficient in these cases, if the arrangement is made such that there is a setting within the setting range is where the unit of length between the tape and the Extent of the tensioning roller acting force on the support rollers approximately is as big as between them. You choose the arrangement expediently so that when setting a low Band tension is the force per unit length between the band and the circumference of the tensioning roller acts on the support rollers is less than between them. You can with the Support rollers even go to zero. If a maximum band tension is set and therefore the support rollers with maximum force against the belt, should still area of the belt located between the support rollers considerably to the one acting between the tension pulley and the belt Contribute friction. The arrangement is therefore appropriate so that at a high set belt tension the one acting between the belt and the circumference of the tension pulley Pressure in the area of the support rollers reaches the pressure, that prevails in the area between the support rollers, or a little more, without the same order of magnitude to leave.

Maßabweichungen der Bänder werden durch die federnden Anpressung der Stützrollen ausgeglichen. Dies ist an sich bekannt (US-A 4 610 067).Dimensional deviations of the belts are caused by the spring pressure the support rollers balanced. This is known per se (US-A 4 610 067).

Damit ein über die Strecke wirkender Andruck zwischen dem Band und der Spannrolle zustande kommt, sollten die beiden Stützrollen einen nicht zu großen Abstand voneinander haben. Ihr Winkelabstand in bezug auf die Spannrolle beträgt vorzugsweise 30-70°, weiter vorzugsweise 40-60°. Es kann auch eine größere Zahl von Stützrollen vorgesehen sein.So that a pressure acting over the distance between the Band and the tensioner comes about, should the two Support rollers are not too far apart. Their angular distance in relation to the tensioning roller is preferably 30-70 °, more preferably 40-60 °. It can also a larger number of support rollers can be provided.

Die Spannung, mit der das Band zwischen den Stützrollen am Umfang der Spannrolle anliegt, hängt zum einen vom Durchmesser der Spannrolle und vom Winkelabstand der Stützrollen ab. Sie ist um so größer, je geringer diese Abmessungen sind. Zum anderen hängt diese Kraft von dem Widerstand ab, den das Band seiner entsprechenden Biegung entgegensetzt. Dieser ist wiederum abhängig von dem E-Modul des Bandwerkstoffs und dem Trägheitsmoment des Bandquerschnitts. Es ist leicht, diese Parameter derart aufgrund von Versuchen zu variieren, daß die gewünschte Andruckkraft erreicht wird. The tension with which the tape between the support rollers on The circumference of the tension pulley depends on the diameter the tensioning roller and the angular distance of the support rollers. The smaller these dimensions are, the larger it is. To the others this force depends on the resistance the tape has opposed to its corresponding bend. This is again depending on the elastic modulus of the strip material and the Moment of inertia of the belt cross section. It is easy to do this To vary parameters in such a way based on experiments that the desired pressure force is reached.

Die Reproduzierbarkeit der Bandspannung hängt auch von der Zahnform ab. Es hat sich als zweckmäßig erwiesen, wenn die vorlaufende Flanke der Zähne in Richtung vom Zahnfluß zur Zahnspitze in Drehrichtung der Spannrolle rückwärts geneigt ist. Dadurch wird erreicht, daß die Zähne weniger dazu neigen, in das Bandmaterial einzuschneiden oder einzuhacken, sondern darüber hinwegzugleiten. Der Abrieb ist entsprechend geringer. Dabei liegt der Flankenwinkel der Zähne zweckmäßigerweise zwischen 10° und 45° zur Bandnormalen, weiter vorzugsweise zwischen 18° und 30°. Nichtsdestoweniger sollten die Zähne im Querschnitt spitz sein.The reproducibility of the belt tension also depends on the Tooth shape. It has proven to be useful if the leading flank of the teeth in the direction from the tooth flow to the Tooth tip inclined backwards in the direction of rotation of the tension pulley is. This ensures that the teeth are less likely to cut or chop into the tape material, but to slide over it. The abrasion is corresponding less. The flank angle of the teeth is expediently between 10 ° and 45 ° to the band normal, more preferably between 18 ° and 30 °. Nonetheless, should the teeth are pointed in cross section.

Wenn Bänder verwendet werden, die auf einer Seite glatt und auf der anderen Seite gezahnt sind, führt die Erfindung unabhängig davon zu guten Ergebnissen, ob die Zähne der Spannrolle mit der glatten oder der gezahnten Seite des Bandes zusammenwirken. Bevorzugt ist aber das Zusammenwirken mit der gezahnten Seite.When using tapes that are smooth and smooth on one side are serrated on the other hand, the invention performs independently of good results whether the teeth of the tension pulley interact with the smooth or serrated side of the belt. However, interaction with the toothed is preferred Page.

Dabei hat es sich als vorteilhaft erwiesen, wenn die Zähne der Spannrolle nicht eng stehen, sondern einen Abstand voneinander haben, der in der Größenordnung der Banddicke liegt.It has proven advantageous if the teeth the tension pulley are not close, but a distance from each other have, which is in the order of the tape thickness.

Die Erfindung wird im folgenden näher unter Bezugnahme auf die Zeichnung erläutert, die ein Ausführungsbeispiel der Erfindung veranschaulicht. Es zeigen:

Fig. 1
eine schematische Seitenansicht des vorderen Werkzeugteils in mäßiger Vergrößerung und
Fig. 2
eine weiter vergrößerte Teilansicht der Spanngeometrie.
The invention is explained in more detail below with reference to the drawing which illustrates an embodiment of the invention. Show it:
Fig. 1
is a schematic side view of the front tool part in moderate enlargement and
Fig. 2
a further enlarged partial view of the clamping geometry.

Gezeigt ist der vordere Teil eines sogenannten Kabelbindewerkzeugs, dessen Werkzeugkörper 1 an seiner Stirn eine von den Teilen 2 und 3 gebildete Umschlingungszange trägt, die ein Kabelbündel 4 als zu bindenden Gegenstand aufnimmt, um das Kabelband 5 herumzuschlingen. Dieses weist an seinem Ende ein Schloß 6 auf, durch dessen Öffnung das freie Ende 7 des Kabelbands geführt wird und das eine Sperrklinke enthält, die zusammenwirkend mit einer Zahnung des Kabelbands dessen Rückbewegung durch das Schloß verhindert. Wenn das Kabelband um den Kabelbaum 4 geschlungen ist, befindet sich das Schloß 6 in einer nicht dargestellten Schloßhalterung des Schlosses an vorbestimmter Stelle desselben. Wenn das freie Ende 7 durch das Schloß hindurchgeführt wird, gelangt es geradewegs in die Spanneinrichtung 8, die es erfaßt und um den Kabelbaum 4 herum straff zieht. Hat das Kabelband eine hinreichende Spannung erreicht, wird der über das Schloß 6 überstehende Teil durch eine bei 9 durch einen Pfeil angedeutete Einrichtung abgeschnitten, und der gebundenen Kabelbaum kann der Zange 2, 3 entnommen werden.The front part of a so-called cable tie tool is shown, whose tool body 1 on his forehead one of the parts 2 and 3 formed wrap, which a bundle of cables 4 receives as an object to be bound to to loop around the cable strap 5. This points at its end a lock 6, through the opening of the free end 7 of Cable tape is guided and contains a pawl that cooperating with a serration of the cable band its return movement prevented by the lock. If the cable tie around the cable harness 4 is looped, there is the lock 6 in a lock holder of the lock, not shown predetermined position of the same. If the free end 7 through the lock is passed through, it goes straight into the Clamping device 8, which detects it and around the wiring harness 4 tightens. Does the cable tie have sufficient tension reached, the part protruding from the lock 6 is through cut off a device indicated by an arrow at 9, and the tied wire harness can the pliers 2, 3 be removed.

Die Spanneinrichtung 8 besteht aus einer Spannrolle 10, die an fester Stelle im Werkzeugkörper 1 gelagert und in Pfeilrichtung drehend antreibbar ist, und zwei Stützrollen 11, die das zu erfassende und zu spannende Bandende 7 gegen die Spannrolle 10 drücken. Die Stützrollen 11 sind an einer Schwinge 12 gelagert, die um eine im Werkzeugkörper 1 feste Achse 13 schwenkbar ist und durch eine Feder 14 im Gegenuhrzeigersinn beaufschlagt ist. Die Kraft der Feder kann mittels einer Einstellschraube 15 verändert werden. Ein Anschlag 17 gibt den Abstand der Stützrollen 11 vom Umfang der Spannrolle 10 vor, wenn sich kein Band 7 dazwischen befindet. Der Abstand wird so eingestellt, daß das dünner zulaufende, freie Bandende zwischen der Spannrolle 10 und der zunächst erreichten Stützrolle 11 erfaßt werden kann. Er ist geringer als das Band in seinem der dünneren Spitze folgenden Teil.The tensioning device 8 consists of a tensioning roller 10 which stored in a fixed position in the tool body 1 and in the direction of the arrow can be driven in rotation, and two support rollers 11 which the band end to be grasped and exciting 7 against the Press tension roller 10. The support rollers 11 are on one Swing arm 12 mounted around a fixed in the tool body 1 Axis 13 is pivotable and counterclockwise by a spring 14 is acted upon. The force of the spring can be achieved by means of an adjusting screw 15 can be changed. A stop 17 gives the distance of the support rollers 11 from the circumference of the tension roller 10 before if there is no band 7 in between. The distance is set so that the thinner, free Belt end between the tension roller 10 and the one initially reached Support roller 11 can be detected. It is less than that Band in its part following the thinner tip.

Die Spannrolle 10 ist mit Zähnen versehen, die vorzugsweise scharfkantig sind. Der Durchmesser der Spannrolle 10 beträgt zweckmäßigerweise ein Mehrfaches der Banddicke. Vorzugsweise ist er drei- bis zehnmal so groß. Der Durchmesser der Stützrollen 11 liegt in derselben Größenordnung wie der der Spannrolle 10. Das Bandmaterial ist zweckmäßigerweise zähelastischer Kunststoff, insbesondere Polyamid.The tension roller 10 is provided with teeth, which are preferably are sharp-edged. The diameter of the tension roller 10 is expediently a multiple of the strip thickness. Preferably it’s three to ten times bigger. The diameter of the support rollers 11 is of the same order of magnitude as that of Tension pulley 10. The tape material is expediently more elastic Plastic, especially polyamide.

Das Band liegt an dem gezahnten Umfang der Spannrolle 10 über dem von den Stützrollen 11 bestimmten Bogen (19) an. Das Ausmaß seiner Biegung und seine dieser Biegung widerstrebende Steifigkeit bestimmen die Kraft der Anlage im mittleren Bereich dieser Strecke. Die Kraft (Pfeil 18), mit der die Stützrollen 11 gegen das Band gedrückt werden, wird bestimmt durch die Einstellung der Feder 14. Bei niedriger Einstellung der Federkraft kann die Kraft, mit der das Band im unmittelbaren Auflagebereich der Stützrollen 11 gegen die Oberfläche der Spannrolle gedrückt wird, geringer sein als die Kraft in der Mitte der Anlagestrecke; bei hoher Federkraft gilt das Gegenteil. In jedem Fall findet die Anlage des Bands an der Spannrolle 10 über eine beträchtliche Strecke unter gleichzeitigem Eingriff mehrerer Spannrollenzähne statt.The tape lies on the toothed circumference of the tension roller 10 the sheet (19) determined by the support rollers 11. The Extent of its bend and its resistance to this bend Rigidity determine the strength of the system in the middle area this route. The force (arrow 18) with which the Support rollers 11 are pressed against the belt is determined by adjusting the spring 14. At a low setting The spring force can be the force with which the tape is in the immediate vicinity Support area of the support rollers 11 against the surface the tension pulley is pressed, be less than the force in the middle of the investment route; this applies to high spring force Opposite. In any case, the tape will be attached to the Tensioner roller 10 over a considerable distance under simultaneous Engagement of several idler teeth instead.

Das zu spannende Bandende 7 wird nach der Einführung in die Spanneinrichtung zunächst schlupffrei von der Spannrolle gefördert. Wenn es den zu bindenden Gegenstand straff umgibt, wächst seine Spannung steil an, bis sie schließlich so groß wird, daß sie der von der Spannrolle 10 aufgebrachten Reibkraft gleicht. In diesem Augenblick bleibt das Band stehen, während die Spannrolle 10 weiterläuft und durch ihre auf die Bandoberfläche ausgeübte Reibkraft die Spannung aufrechterhält. Die Bandspannung, bei der dieser Zustand eintritt, ist von der Einstellung der Feder 14 abhängig. Mittels der Einstellschraube 15 kann daher die zu erzielende Bandspannung eingestellt werden.After the introduction to the The tensioning device is initially conveyed from the tensioning roller without slippage. If it tightly surrounds the item to be bound, His tension grows steeply until it finally becomes that big will that the friction force applied by the tensioning roller 10 equal. At this moment the tape stops while the tensioning roller 10 continues to run through its on the Belt surface exerted friction force maintains the tension. The band tension at which this condition occurs is depending on the setting of the spring 14. Using the adjusting screw 15 can therefore be the belt tension to be achieved can be set.

In einem Zeitpunkt, in welchem Sicherheit dafür besteht, daß die eingestellte Bandspannung erreicht wurde, wird die Schneideinrichtung 9 eingeschaltet. Der Antrieb der Spannrolle 10 kann danach beendet werden, sobald das abgeschnittene Bandende 7 ausgeworfen ist.At a time when there is certainty that the set belt tension has been reached, the Cutting device 9 switched on. The drive of the tension pulley 10 can then be ended as soon as the cut Tape end 7 is ejected.

Der Zeitpunkt, in dem der Schnitt stattfindet, ist so eingestellt, daß zuvor gerade diejenige Umdrehungszahl der Spannrolle 10 stattfinden konnte, die für den Durchlauf des längstmöglichen Kabelbands bei geringstmöglichem Kabelbaumdurchmesser notwendig ist. Unnötig langer Reibeingriff und Verschleiß der Spannrolle 10 wird dadurch vermieden.The time at which the cut takes place is set so that just the number of revolutions of the Tensioner 10 could take place for the passage of the Longest possible cable ties with the smallest possible cable harness diameter necessary is. Unnecessarily long rubbing and Wear of the tensioning roller 10 is thereby avoided.

Im Zwickel zwischen den Stützrollen 11 und dem Band 7 kann eine Führungsleiste 16 vorgesehen sein, die während des Einführvorgangs die Bandspitze vom Walzenspalt an der ersten Spannrolle 11 zum Walzenspalt an der zweiten Spannrolle 11 leitet.In the gusset between the support rollers 11 and the belt 7 can a guide bar 16 may be provided during the insertion process the belt tip from the nip at the first Tension roller 11 to the nip on the second tension roller 11 directs.

In einem bewährten Ausführungsbeispiel betrug der Durchmesser der Spannrolle (gemessen bis zu den Zahnspitzen) 8 mm. Der Durchmesser der Stützrollen belief sich auf 7 mm. Der Winkelabstand der Stützrollen, bezogen auf die Achse der Spannrolle, betrug etwa 53°. Der Umfang der Spannrolle war mit 20 scharfkantigen Zähnen versehen, deren Flankenwinkel gegenüber dem Radius 23° betrug. Es wurde ein Polyamidband mit einer Dicke (einschließlich Zahnung) von 1,15 mm und einer Breite von 2,6 mm verarbeitet. Die gezahnte Seite des Bandes war der Spannrolle zugewendet.In a proven embodiment, the diameter was the tension pulley (measured up to the tooth tips) 8 mm. The The diameter of the support rollers was 7 mm. The angular distance the support rollers, based on the axis of the Tension pulley was about 53 °. The scope of the tension pulley was provided with 20 sharp-edged teeth, their flank angles compared to the radius was 23 °. It became a polyamide tape with a thickness (including serration) of 1.15 mm and one Width of 2.6 mm processed. The toothed side of the Band was turned to the tension pulley.

Wenn die Stützrollen mit einer Kraft 18 von 30N belastet wurden, ergab sich eine Bandspannung von etwa 80N. An derjenigen Stelle des Bandes, an der die Spannrolle gegenüber dem Band durchgerutscht war, waren die Zähne des Bandes über eine Strecke von etwas mehr als 4 mm Länge gleichmäßig verquetscht und abgerieben. An den Enden dieser Strecke, wo die Stützrollen gewirkt hatten, war die Verformung wenig stärker als in der Mitte dieser Strecke.If the support rollers were loaded with a force 18 of 30N, the band tension was about 80N. On that one Place the belt where the tensioning roller is opposite the belt slipped, the teeth of the band were over one Line of slightly more than 4 mm in length is squeezed evenly and rubbed off. At the ends of this route where the support rollers had worked, the deformation was little greater than in the middle of this route.

Wurde die Kraft 18 auf etwa 10N eingestellt, ergab sich eine entsprechend geringere Bandspannung. Die von der Spannrolle verformte Strecke hatte eine Länge von etwas weniger als 4 mm. Die Verformung war geringer als bei höher eingestellter Spannung und in der Mitte der Strecke stärker als an ihren Enden.If the force 18 was set to approximately 10N, one was found correspondingly lower belt tension. The one from the tension pulley deformed track was a little less than 4 in length mm. The deformation was less than that of a higher one Tension and stronger in the middle of the route than on hers End up.

Claims (9)

  1. Tool for binding a belt around an object, in particular a cable harness, which tool contains a tightening device (8) for the tough elastic belt (5) which is resistant to bending, which device comprises a tightening roller (10), which is provided with teeth, is continuously driven during the tightening operation and, on reaching a predetermined belt tension, continues to rotate with respect to the stationary belt (5), and an abutment, which supports the belt (5) on the side opposite to the tightening roller, characterized in that the abutment is formed by at least two support rollers (11) which are arranged one behind the other on the circumference of the tightening roller (10) and are clamped onto the tightening roller (10) by spring force (14), and the diameter of the tightening roller (10) and the distance between the support rollers in relation to the resistance to bending of the belt (5) are selected in such a way that the force acting per unit length between the belt (5) and the circumference of the tightening roller (10) at the support rollers (11) lies in the same order of magnitude as between them.
  2. Tool according to Claim 1, characterized in that the support rollers (11) are at an angular spacing (19), with regard to the tightening roller, of 30-70°.
  3. Tool according to Claim 1 or 2, characterized in that the force exerted by the support rollers (11) on the belt (5) is adjustable and the setting range comprises a setting at which the force acting per unit length between the belt (5) and the circumference of the tightening roller (10) is approximately the same at the support rollers (11) as between them.
  4. Tool according to one of Claims 1 to 3, characterized in that the force exerted by the support rollers (11) on the belt (5) is adjustable and, at a low setting of this force, the force acting per unit length between the belt (5) and the circumference of the tightening roller (10) is lower at the support rollers (11) than between them.
  5. Tool according to one of Claims 1 to 4, characterized in that the leading flank of the teeth of the tightening roller (10) is inclined towards the rear.
  6. Tool according to Claim 5, characterized in that the flank angle of the teeth lies between 10° and 45°.
  7. Tool according to Claim 5 or 6, characterized in that the teeth are pointed in cross-section.
  8. Tool according to one of Claims 1 to 7, characterized in that it is used in conjunction with toothed belts (5) and these belts are arranged therein with toothing facing towards the tightening roller (10).
  9. Tool according to one of Claims 5 to 8, characterized in that the tooth pitch of the tightening roller (10) is at least approximately equal to the thickness of the belt.
EP97911200A 1996-10-10 1997-10-08 Cable binding tool Expired - Lifetime EP0930997B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29617650U 1996-10-10
DE29617650U DE29617650U1 (en) 1996-10-10 1996-10-10 Cable tie tool
PCT/EP1997/005546 WO1998015458A1 (en) 1996-10-10 1997-10-08 Cable binding tool

Publications (2)

Publication Number Publication Date
EP0930997A1 EP0930997A1 (en) 1999-07-28
EP0930997B1 true EP0930997B1 (en) 2000-08-09

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Application Number Title Priority Date Filing Date
EP97911200A Expired - Lifetime EP0930997B1 (en) 1996-10-10 1997-10-08 Cable binding tool

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US (1) US6119734A (en)
EP (1) EP0930997B1 (en)
JP (1) JP3756196B2 (en)
DE (2) DE29617650U1 (en)
ES (1) ES2150230T3 (en)
PT (1) PT930997E (en)
WO (1) WO1998015458A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505766B2 (en) * 2001-03-30 2003-01-14 Illinois Tool Works Inc. Feed wheel for strapping tool
JP2009512602A (en) * 2005-10-20 2009-03-26 パンデュイット・コーポレーション Metal bundling tool with rotating gripper and ball setting device
US7458398B2 (en) * 2005-10-20 2008-12-02 Panduit Corp. Metal tie tool with rotary gripper and ball setting device
US8615854B2 (en) * 2007-11-06 2013-12-31 Michael P. Fennell Fixturing apparatus
US9085070B2 (en) * 2012-04-16 2015-07-21 Signode Industrial Group Llc Tensioner/cutter tool for hose clamps
CN105059581B (en) * 2015-08-11 2018-06-01 许修义 A kind of strap mechanism of automatic tie tool
US20170057674A1 (en) * 2015-09-01 2017-03-02 Hellermanntyton Corporation Pawl shroud with textured surface
CN106742178A (en) * 2016-02-05 2017-05-31 许修义 A kind of homing guidance punch block mechanism
US11511894B2 (en) * 2019-09-26 2022-11-29 Hellermanntyton Corporation Cable tie application tool
EP4163215A1 (en) * 2021-10-01 2023-04-12 HellermannTyton GmbH Automatic bundling tool device optimized for a range of one-piece-tie strap thicknesses
DE202022101064U1 (en) 2021-10-01 2023-01-03 Hellermanntyton Gmbh Automatic bundling tooling device optimized for a variety of one-piece truss strap gauges
USD1012641S1 (en) 2021-10-25 2024-01-30 Aptiv Technologies Limited Tool nosepiece

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205916A (en) * 1963-03-07 1965-09-14 American Mfg Company Inc Mechanical apparatus
JPS6121316A (en) * 1984-07-10 1986-01-30 株式会社 ニフコ Bundling tool
US4934416A (en) * 1988-11-29 1990-06-19 Joslyn Corporation Power-operated banding tool

Also Published As

Publication number Publication date
EP0930997A1 (en) 1999-07-28
WO1998015458A1 (en) 1998-04-16
ES2150230T3 (en) 2000-11-16
JP3756196B2 (en) 2006-03-15
PT930997E (en) 2000-12-29
DE59702159D1 (en) 2000-09-14
US6119734A (en) 2000-09-19
JP2001501563A (en) 2001-02-06
DE29617650U1 (en) 1998-02-05

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