EP2243708B1 - Unité et procédé de cerclage - Google Patents

Unité et procédé de cerclage Download PDF

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Publication number
EP2243708B1
EP2243708B1 EP09158691A EP09158691A EP2243708B1 EP 2243708 B1 EP2243708 B1 EP 2243708B1 EP 09158691 A EP09158691 A EP 09158691A EP 09158691 A EP09158691 A EP 09158691A EP 2243708 B1 EP2243708 B1 EP 2243708B1
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EP
European Patent Office
Prior art keywords
main
security
punch
die
members
Prior art date
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Active
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EP09158691A
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German (de)
English (en)
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EP2243708A1 (fr
EP2243708A8 (fr
Inventor
Lennart Nilsson
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Sund Birsta AB
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Sund Birsta AB
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Publication date
Application filed by Sund Birsta AB filed Critical Sund Birsta AB
Priority to EP09158691A priority Critical patent/EP2243708B1/fr
Priority to AT09158691T priority patent/ATE530449T1/de
Priority to ES09158691T priority patent/ES2376082T3/es
Priority to CN201010214435.8A priority patent/CN101870367B/zh
Publication of EP2243708A1 publication Critical patent/EP2243708A1/fr
Publication of EP2243708A8 publication Critical patent/EP2243708A8/fr
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Publication of EP2243708B1 publication Critical patent/EP2243708B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/30—Securing ends of binding material by deforming the overlapping ends of the strip or band

Definitions

  • the present invention relates to a strapping unit according to the preamble of claim 1 and a method for forming a sealless joint in overlapping portions at the ends of a loop of metal strap by means of such a strapping unit.
  • a strapping unit according to the preamble of claim 1 is previously known from US 4 154 158 A , US 3 794 086 A and GB 2 040 825 A .
  • a disadvantage with these known strapping units is that they achieve a sealless joint in overlapping portions at the ends of a loop of metal strap which will only lock said overlapping metal strap portions to each other in one direction under the effect of a tensile force in the loop. The sealless joint could therefore be broken, and the overlapping metal strap portions consequently released from each other, if the tensile force in the loop is released.
  • the object of the present invention is to achieve a further development of a strapping unit of the type according to the preamble of claim 1 so as to overcome the above-mentioned drawback of the previously known strapping units.
  • the strapping unit according to the invention comprises:
  • the main jaws are moveable towards and away from each other, together with the respective main die holder, between a retracted open position and an advanced active position, the main jaws in the active position together forming a supporting surface for a metal strap received in a passage formed between the main jaws and said one or more main punch member.
  • the auxiliary jaws are moveable towards and away from each other, together with the respective security die holder, between a retracted open position and an advanced active position.
  • the auxiliary jaws are also moveable in relation to the main jaws so as to allow the auxiliary jaws to remain in or be moved to the active position when the main jaws are moved away from the active position after the cutting of mutually interlocking incisions in overlapping portions at the ends of a loop of metal strap received in said passage.
  • Said main die members and said one or more main punch members are arranged to co-operate so as to cut mutually interlocking incisions in overlapping portions at the ends of a loop of metal strap received in said passage, when the respective main punch member is displaced to the punching position with the main jaws located in the active position, whereas said security die members and said security punch member are arranged to co-operate so as to cut security incisions in said overlapping metal strap portions when the security punch member is displaced to the punching position with the auxiliary jaws located in the active position.
  • the incisions formed by the main die members and the main punch members are configured to lock the overlapping metal strap portions to each other in a first direction under the effect of a tensile force in the loop, whereas the security incisions formed by the security die members and the security punch member are configured to lock the overlapping metal strap portions to each other in a second direction opposite said first direction.
  • the security incisions will thereby prevent the sealless joint from being broken due to a possible release of the tension in the loop.
  • the first security die holder is received in a recess in the first main die holder, and the second security die holder is received in a recess in the second main die holder.
  • the strapping unit can be given a compact design.
  • a main jaw and the associated auxiliary jaw are moveable in relation to the housing and in relation to each other by one and the same actuator, and the number of actuators required for controlling the operation of the strapping unit can thereby be reduced.
  • the strapping unit can be given a compact design.
  • the invention also relates to a method according to claim 13 for forming a sealless joint in overlapping portions at the ends of a loop of metal strap by means of a strapping unit of the present invention.
  • Figs 1 and 2 show a strapping unit 1 according to an embodiment of the present invention for forming a sealless joint in overlapping portions at the ends of a loop of metal strap.
  • the strapping unit 1 is here illustrated without a protective cover, which is to cover the central part of the strapping unit in order to protect the mechanisms included therein.
  • the strapping unit 1 comprises a housing 2.
  • a main punch holder 10 (see Fig 3c ) is displaceably mounted in the housing 2 and carries a number of main punch members 11 a, 11 b.
  • two main punch members 11 a, 11 b are detachably mounted to the main punch holder 10 by means of fastening elements in the form of screws or the similar so as to enable a replacement of the respective main punch member.
  • the main punch members 11 a, 11 bare displaceable, together which the main punch holder 10, to and fro between a retracted position (see Fig 3c ) and an advanced punching position (see Fig 5c ) by means of a first punch actuator.
  • this punch actuator comprises a piston rod 13 connected to a hydraulically or pneumatically actuated piston 14, which is displaceably mounted in a first piston cavity 15 in the housing 2.
  • This piston cavity 15 is divided by the piston 14 into an upper chamber 15a and a lower chamber 15b (see Fig 4c ).
  • the respective chamber 15a, 15b is connected to a pressure medium system (not shown) for feeding pressure medium in the form of hydraulic oil or compressed air to the chamber in order to control the displacement of the piston 14 in the piston cavity 15.
  • the main punch holder 10 is connected to the piston rod 13 of first punch actuator through a link mechanism 17, which is arranged to transfer a linear movement of the piston rod 13 into a linear movement of the main punch holder 10.
  • a cutting member 16 is mounted to the main punch holder 10 so as to move together with the main punch members 11 a, 11 b under the effect of the first punch actuator.
  • a security punch holder 20 (see Fig 3c ) is displaceably mounted in the housing 2 and carries a security punch member 21.
  • the security punch member 21 is detachably mounted to the security punch holder 20 by means of a fastening element in the form of a screw or the similar so as to enable a replacement of the security punch member.
  • the security punch member 21 is located between the two main punch members 11 a, 11 b.
  • the security punch member 21 is displaceable, together which the security punch holder 20, to and fro between a retracted position (see Fig 3c ) and an advanced punching position (see Fig 6c ) by means of a second punch actuator.
  • this punch actuator comprises a piston rod 23 connected to a hydraulically or pneumatically actuated piston 24, which is displaceably mounted in a second piston cavity 25 in the housing 2.
  • This piston cavity 25 is divided by the piston 24 into an upper chamber 25a and a lower chamber 25b (see Fig 4c ).
  • the respective chamber 25a, 25b is connected to a pressure medium system (not shown) for feeding pressure medium in the form of hydraulic oil or compressed air to the chamber in order to control the displacement of the piston 24 in the piston cavity 25.
  • the piston rods 13, 23 of the first and second punch actuators are with advantage coaxially arranged with one piston rod extending through the other piston rod, as illustrated in Figs 3c-7c .
  • the piston rod 23 of the second punch actuator extends through the piston 14 and the piston rod 13 of the first punch actuator and through the main punch holder 10.
  • a first main die holder 30a is moveably mounted in the housing 2 and carries a number of main die members 31 a, 31 b, which form a first main jaw 36a.
  • a second main die holder 30b is moveably mounted in the housing 2 and carries a number of main die members 31c, 31d, which form a second main jaw 36b located opposite said first main jaw 36a.
  • two main die members are detachably mounted to the respective main die holder 30a, 30b by means of fastening elements in the form of screws or the similar so as to enable a replacement of the respective main die member.
  • the main jaws 36a, 36b are moveable towards and away from each other, together with the respective main die holder 30a, 30b, between a retracted open position (see Figs 7a and 7b ) and an advanced active position (see Figs 4a and 4b ). In the active position, the main jaws 30a, 30b together form a supporting surface for a metal strap 3 received in a passage 4 formed between the main jaws 30a, 30b and the main punch members 11 a, 11 b.
  • a first security die holder 40a is moveably mounted in the housing 2 and carries a first security die member 41 a, which forms a first auxiliary jaw 46a.
  • a second security die holder 40b is moveably mounted in the housing 2 and carries a second security die member 41 b, which forms a second auxiliary jaw 46b located opposite said first auxiliary jaw 46a.
  • the respective security die member 41 a, 41 b is detachably mounted to the associated security die holder 40a, 40b by means of fastening elements in the form of screws or the similar so as to enable a replacement of the respective security die member.
  • the security die member 41 a of the first security die holder 40a is located between the two main die members 31a, 31 b of the first main die holder 30a, and the security die member 41 b of the second security die holder 40b is located between the two main die members 31c, 31d of the second main die holder 30b.
  • the first security die holder 40a is received in a recess in the first main die holder 30a
  • the second security die holder 40b is received in a recess in the second main die holder 30b.
  • first main die holder 30a and the first security die holder 40a are pivotally mounted to a common pivot shaft 9a, whereas the second main die holder 30b and the second security die holder 40b are pivotally mounted to another common pivot shaft 9b.
  • the auxiliary jaws 46a, 46b are moveable towards and away from each other, together with the respective security die holder 40a, 40b, between a retracted open position (see Figs 7a and 7b ) and an advanced active position (see Figs 6a and 6b ).
  • the auxiliary jaws 46a, 46b are also moveable in relation to the main jaws 36a, 36b so as to allow the auxiliary jaws 46a, 46b to remain in or be moved to the active position when the main jaws 36a, 36b are moved away from the active position after the cutting of mutually interlocking incisions in overlapping portions at the ends of a loop of metal strap received in the above-mentioned passage 4.
  • the first main jaw 36a and the first auxiliary jaw 46a are moveable between open position and active position and in relation to each other under the effect of a first die actuator 32a and a first link mechanism 37a
  • the second main jaw 36b and the second auxiliary jaw 46b are moveable between open position and active position and in relation to each other under the effect of the second die actuator 32b and a second link mechanism 37b
  • the respective die actuator 32a, 32b comprises a piston rod 33a, 33b connected to a hydraulically or pneumatically actuated piston (not shown), which is displaceably mounted in a piston cavity (not shown) in the housing 2.
  • the respective piston cavity is divided by the associated piston into an upper chamber and a lower chamber, the respective chamber being connected to a pressure medium system (not shown) for feeding pressure medium in the form of hydraulic oil or compressed air to the chamber in order to control the displacement of the piston in the piston cavity.
  • the piston rod 33a of the first die actuator 32a is connected to the first main die holder 30a and the first security die holder 40a through the first link mechanism 37a, which is arranged to transfer a linear movement of the piston rod 33a into a pivotal movement of the first main die holder 30a and the first security die holder 40a.
  • the piston rod 33b of the second die actuator 32b is connected to the second main die holder 30b and the second security die holder 40b through the second link mechanism 37b, which is arranged to transfer a linear movement of the piston rod 33b into a pivotal movement of the second main die holder 30b and the second security die holder 40b.
  • a gripping element 50 is displaceably mounted in the housing 2.
  • This gripping element 50 is provided with a gripping surface 51 (see Fig 6c ) on its underside and the respective main jaw 36a, 36b is at its rear provided with a corresponding gripping surface 38 on its upper side.
  • the gripping element 50 is displaceable to and fro between a retracted strap releasing position (see Fig 6c ) and an advanced strap gripping position (see Fig 4c ) by means of an actuator.
  • this actuator comprises a piston rod 53 connected to a hydraulically or pneumatically actuated piston 54, which is displaceably mounted in a piston cavity 55 in the housing 2.
  • This piston cavity 55 is divided by the piston 54 into an upper chamber 55a and a lower chamber 55b (see Fig 6c ).
  • the respective chamber 55a, 55b is connected to a pressure medium system (not shown) for feeding pressure medium in the form of hydraulic oil or compressed air to the chamber in order to control the displacement of the piston 54 in the piston cavity 55.
  • the gripping surface 51 of the gripping element 50 and the gripping surface 38 of the respective main jaw 36a, 36b are arranged to co-operate so as to grip a metal strap 3 extending between the gripping element 50 and the main jaws 36a, 36b when the gripping element 50 is displaced to the advanced strap gripping position with the main jaws 36a, 36b located in the active position.
  • the gripping element 50 is provided with a channel 56, through which a metal strap 3 is intended to be fed into the above-mentioned passage 4.
  • the cutting member 16 is arranged to slide against the gripping element 50 so that it will pass the outlet opening of the channel 56, and thereby cut off a metal strap extending through this outlet opening, when the main punch members 11a, 11b are displaced to the punching position.
  • the housing 2 comprises a pneumatic or hydraulic block 5.
  • the above-mentioned piston cavities and the pressure medium channels leading to these piston cavities are formed in this block 5.
  • the main punch members 11 a, 11 b and the main die members 31 a, 31 b, 31 c, 31 d are arranged to co-operate so as to cut mutually interlocking incisions 6 (see Fig 8 ) in overlapping portions at the ends of a loop of metal strap 3 received in the passage 4, when the main punch members 11 a, 11 b are displaced to the punching position with the main jaws 36a, 36b located in the active position.
  • each main punch member 11 a, 11 b is designed to form four incisions 6 and the security punch member 21 is designed to form two security incisions 7.
  • the incisions 6 formed by the main punch members 11 a, 11 b are configured to lock the overlapping metal strap portions to each other in a first direction under the effect of a tensile force in the metal strap loop, whereas the security incisions 7 formed by the security punch 21 are configured to lock the overlapping metal strap portions to each other in a second direction opposite said first direction.
  • the strapping unit 1 is intended to form part of a strapping machine, which is to be used for securing a loop of metal strap around an object or a bundle of objects.
  • a strapping machine also comprises a feeding unit for feeding a metal strap through the channel 56 of the gripping element 50 and into the above-mentioned passage 4 of the strapping unit 1, around an object 8 or bundle of objects (see Fig 3c ) and then back into the passage 4.
  • a metal strap 3 is fed forwards by means of a feeding unit (not shown) through the channel 56 of the gripping element 50, into the passage 4, in a loop around the object 8, under the gripping element 50 and then back into the passage 4.
  • a feeding unit not shown
  • two mutually overlapping portions of the metal strap 3 will be provided in the passage 4 between the punch members 11a, 11b, 21 and the die members 31a, 31b, 31c, 31d, 41a, 41 b.
  • the main jaws 36a, 36b and the auxiliary jaws 46a, 46b are in the active position or close to the active position and will thereby prevent the metal strap from falling out of the passage 4, whereas the punch members 11 a, 11 b, 21 and the gripping element 50 are in the retracted position.
  • the gripping element 50 is displaced to the strap gripping position (see Fig 4c ) so as to lock the end of the metal strap 3 to the strapping unit 1 by clamping between the gripping surface 51 of the gripping element 50 and the gripping surfaces 38 of the main jaws 36a, 36b. Thereafter the metal strap 3 is pulled backwards by the feeding unit so as to pull the metal strap 3 tightly around the object 8.
  • a tension is hereby developed in the metal strap loop.
  • the main punch members 11a, 11b are displaced to the punching position (see Fig 5c ) so as to press the overlapping metal strap portions against the main die members 31a, 31b, 31c, 31d and thereby cut through these metal strap portions for the formation of incisions 6 therein.
  • the cutting member 16 will be displaced across the outlet opening of the channel 56 in the gripping element 50 and cut off the part of the metal strap extending through this outlet opening.
  • the main jaws 36a, 36b are located in the advanced active position, as illustrated in Fig 5a , and the gripping element 50 is located in the gripping position.
  • the gripping element 50 and the main punch members 11a, 11b are returned to the retracted position, whereupon the main jaws 36a, 36b are moved a short distance away from the active position, as illustrated in Fig 6a , so as to make the main die members 31 a, 31 b, 31c, 31d loose their locking engagement with the overlapping metal strap portions and allow these metal strap portions to slide longitudinally in relation to the main die members.
  • Said short distance may be in the order of a few millimeters.
  • the overlapping metal strap portions at the ends of the loop are now free to slide a short distance (about 1-2 millimeters) in relation to each other in the longitudinal direction of the metal strap under the effect of the inherent tension in the loop until the incisions 6 in the upper metal strap portion engage firmly with the corresponding incisions 6 in the lower metal strap portion.
  • the overlapping metal strap portions have now been joined to each other by means of the mutually interlocking incisions 6. The joint will tighten further if the metal strap loop is subjected to increased tension.
  • the security punch member 21 is displaced to the punching position (see Fig 6c ) so as to press the overlapping metal strap portions against the security die members 41 a, 41 b and thereby cut through these metal strap portions for the formation of security incisions 7 therein.
  • the auxiliary jaws 46a, 46b are located in the advanced active position, as illustrated in Fig 6a .
  • the security incisions 7 will prevent the overlapping metal strap portions from sliding backwards in relation to each other and will thereby secure a firm joint between the overlapping metal strap portions together with the previously formed incisions 6.
  • the security punch member 21 is returned to the retracted position (see Fig 7c ) and the main jaws 36a, 36b and auxiliary jaws 46a, 46b are moved to the open position (see Figs 7a and 7b ) so as to release the metal strap loop from the strapping unit 1.
  • the jaws 36a, 36b, 46a, 46b are then returned to the starting position (see Figs 3a and 3b ) so as to allow a new length of metal strap to be fed forward for the formation of a new loop of metal strap around the object or around a new object.

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

Claims (13)

  1. Unité de cerclage pour former un joint sans fermoir dans des parties qui se chevauchent aux extrémités d'une boucle de bande métallique, l'unité de cerclage comportant :
    - un logement (2),
    - un support de perforateur principal (10), qui est monté de manière déplaçable dans le logement (2) et qui porte un ou plusieurs éléments du perforateur principal (11a, 11b), les dits un ou plusieurs éléments du perforateur principal étant déplaçables, avec le support de perforateur principal (10), en avant et en arrière entre une position rétractée et une position avancée de perforation,
    - un premier support de matrice principale (30a) qui est monté de manière mobile dans le logement (2) et qui porte un ou plusieurs éléments de la matrice principale (31a, 31b) qui forment une première mâchoire principale (36a), et
    - un deuxième support de matrice principale (30b), qui est monté de manière mobile dans le logement (2) et qui porte un ou plusieurs éléments de la matrice principale (31c, 31d) qui forment une deuxième mâchoire principale (36b) située en face de ladite première mâchoire principale (36a),
    - où les mâchoires principales (36a, 36b) sont mobiles vers et éloignées l'une de l'autre, ensemble avec le support respectif de la matrice principale (30a, 30b) entre une position rétractée ouverte et une position avancée active, les mâchoires principales (36a, 36b) dans la position active formant ensemble une surface de soutien pour une bande métallique reçue dans un passage (4) formé entre les mâchoires principales (36a, 36b) et lesdits un ou plusieurs éléments du perforateur principal (11a, 11b), et
    - où lesdits éléments de la matrice principale (31a, 31b, 31c, 31d) et lesdits un ou plusieurs éléments du perforateur principal (11a, 11b) sont placés pour coopérer de façon à découper des incisions mutuellement emboîtables dans des parties chevauchantes aux extrémités d'une boucle de bande métallique reçue dans ledit passage (4), quand l'élément respectif de perforateur principal (11a, 11b) est déplacé en position de perforation avec les mâchoires principales (36a, 36b) en position active,
    caractérisée en ce que
    - l'unité de cerclage (1) comprend en outre :
    - un support de sécurité du perforateur (20) qui est monté de manière mobile dans le logement (2) et qui porte un élément de sécurité du perforateur (21), ledit élément de sécurité du perforateur étant mobile, avec le support de sécurité du perforateur (20), vers l'avant et vers l'arrière entre une position rétractée et une position avancée de perforation,
    - un premier support de sécurité de la matrice (40a) qui est monté de manière mobile dans le logement (2) et qui porte un premier élément de sécurité de la matrice (41a) formant une première mâchoire auxiliaire (46a), et
    - un deuxième support de sécurité de la matrice (40b) qui est monté de manière mobile dans le logement (2) et qui porte un deuxième élément de sécurité de la matrice (41b) formant une deuxième mâchoire auxiliaire (46a) située à l'opposé de ladite première mâchoire auxiliaire (46a),
    - en ce que les dites mâchoires auxiliaires (46a, 46b) sont mobiles vers et à l'écart l'une de l'autre, avec le support respectif de sécurité de la matrice (40a, 40b) entre une position rétractée ouverte et une position avancée active,
    - en ce que les mâchoires auxiliaires (46a, 46b) sont mobiles par rapport aux mâchoires principales (36a, 36b) de façon à permettre aux mâchoires auxiliaires (46a, 46b) de rester dans ou bien d'être placée dans la position active quand les mâchoires principales (36a, 36b) sont écartées de la position active après le découpage des incisions mutuellement emboîtables dans des parties chevauchantes aux extrémités d'une boucle de bande métallique reçue dans ledit passage (4), et
    - en ce que lesdits éléments de sécurité de la matrice (41a, 41b) et ledit élément de sécurité du perforateur (21) sont placés pour coopérer afin de découper des incisions de sécurité dans lesdites parties qui se chevauchent de la bande métallique quand l'élément de sécurité du perforateur (21) est déplacé en position de perforation avec les mâchoires (46a, 46b) disposées en position active.
  2. Unité de cerclage selon la revendication 1, caractérisée en ce que le premier support principal de la matrice (30a) et le premier support de sécurité de la matrice (40a) sont montés de manière pivotante sur un axe de pivot commun (9a), et en ce que le deuxième support principal de la matrice (30b) et le deuxième support de sécurité de la matrice (40b) sont montés de manière pivotante sur un autre axe commun de pivot (9b).
  3. Unité de cerclage selon la revendication 2, caractérisée en ce que le premier support de sécurité (40a) de la matrice est reçu dans un retrait dans le premier support principal de la matrice (30a), et en ce que le deuxième support de sécurité de la matrice (40b) est reçu dans un retrait dans le deuxième support principal de la matrice (30b).
  4. Unité de cerclage selon l'une quelconque des revendications 1 à 3, caractérisée en ce que :
    - le premier support principal de la matrice (30a) porte deux éléments principaux de la matrice (31a, 31b),
    - le deuxième support principal de la matrice (30b) porte deux éléments principaux de la matrice (31c, 31d),
    - le premier élément de sécurité (41a) de la matrice est situé entre les deux éléments principaux de la matrice (31a, 31b) portés par le premier support principal de la matrice (30a),
    - le deuxième élément de sécurité de la matrice (41b) est situé entre les deux éléments principaux de la matrice (31c, 31d) portés par le deuxième support principal de la matrice (30b),
    - le support principal du perforateur (10) porte deux éléments principaux du perforateur (11a, 11b), et
    - l'élément de sécurité du perforateur (21) est situé entre les deux éléments principaux du perforateur (11a, 11b).
  5. Unité de cerclage selon l'une quelconque des revendications 1 à 4, caractérisée en ce que :
    - l'unité de cerclage (1) comporte :
    - un premier actionneur de la matrice (32a),
    - un premier mécanisme connecteur (37a), à travers lequel le premier support principal de la matrice (30a) et le premier support de sécurité de la matrice (40a) sont connectés au premier actionneur de la matrice (32a),
    - un deuxième actionneur de la matrice (32b), et
    - un deuxième mécanisme connecteur (37b) à travers lequel le deuxième support principal de la matrice (30b) et le deuxième support de sécurité de la matrice (40b) sont connectés au deuxième actionneur de la matrice (32b),
    - en ce que la première mâchoire principale (36a) et la première mâchoire auxiliaire (46a) sont mobiles entre une position ouverte et une position active et l'une par rapport à l'autre sous l'effet du premier actionneur de la matrice (32a) et du premier mécanisme connecteur (37a), et
    - en ce que la deuxième mâchoire principale (36b) et la deuxième mâchoire auxiliaire (46b) sont mobiles entre une position ouverte et une position active et sont l'une par rapport à l'autre sous l'effet du deuxième actionneur de la matrice (32b) et du deuxième mécanisme connecteur (37b).
  6. Unité de cerclage selon la revendication 5, caractérisée en ce que l'actionneur respectif de la matrice (32a, 32b) comporte un piston à activation hydraulique ou pneumatique monté de manière à pouvoir se déplacer dans une cavité du piston dans le logement (2).
  7. Unité de cerclage selon l'une quelconque des revendications 1 à 6, caractérisée en ce que :
    - le premier support principal du perforateur (10) est déplaçable au moyen d'un premier actionneur du perforateur, qui comporte une tige de piston (13) connectée à un piston à activation hydraulique ou pneumatique (14),
    - en ce que le support de sécurité du perforateur (20) est déplaçable au moyen d'un deuxième actionneur du perforateur, qui comporte une tige de piston (23) connectée à un piston à activation hydraulique ou pneumatique (24), et
    - en ce que les tiges de piston (13, 23) desdits premier et deuxièmes actionneurs du perforateur sont placées de manière coaxiale avec une tige piston (23) s'étendant à travers l'autre tige de piston (13).
  8. Unité de cerclage selon la revendication 7, caractérisée en ce que la tige de piston (23) du deuxième actionneur du perforateur s'étend à travers la tige de piston (13) du premier actionneur du perforateur.
  9. Unité de cerclage selon la revendication 8, caractérisée en ce que :
    - le piston (14) du premier actionneur du perforateur est monté de manière à pouvoir se déplacer dans une première cavité de piston (15) dans le logement (2),
    - en ce que le piston (24) du deuxième actionneur du perforateur est monté de manière à pouvoir se déplacer dans une deuxième cavité de piston (25) dans le logement (2) située au-dessus de ladite première cavité de piston (15).
  10. Unité de cerclage selon l'une quelconque des revendications 1 à 9, caractérisée en ce que :
    - l'unité de cerclage (1) comporte un élément d'adhérisation (50) qui est monté de manière à pouvoir se déplacer dans le logement (2), l'élément d'adhérisation (50) étant déplaçable d'avant en arrière entre une position rétractée de libération de la bande et une position avancée d'adhérisation de la bande,
    - en ce que l'élément d'adhérisation (50) est pourvu d'une surface d'adhérisation (51) sur son côté inférieur,
    - en ce que la mâchoire principale respective (36a, 36b) est pourvue à son extrémité arrière d'une surface d'adhérisation (38) sur son côté supérieur, et
    - en ce que la surface d'adhérisation (51) de l'élément d'adhérisation et la surface d'adhérisation (38) de la mâchoire principale respective sont placées de manière à coopérer de façon à agripper une bande métallique s'étendant entre l'élément d'adhérisation (50) et les mâchoires principales (36a, 36b) quand l'élément d'adhérisation est déplacé dans la position avancée d'adhérisation de la bande avec les mâchoires principales placées en position active.
  11. Unité de cerclage selon la revendication 10, caractérisée en ce que l'élément d'adhérisation (50) est déplaçable au moyen d'un actionneur qui comporte un piston (54) activé hydrauliquement ou de manière pneumatique monté dans une cavité de piston (55) dans le logement (2).
  12. Unité de cerclage selon l'une quelconque des revendications 6, 9 ou 11, caractérisée en ce que le logement (2) comprend un bloc pneumatique ou hydraulique (5), la cavité de piston respective et les canaux médians de pression menant à la cavité de piston respective étant formés dans ce bloc.
  13. Méthode pour former un joint sans fermoir dans des parties qui se chevauchent aux extrémités d'une boucle de bande métallique au moyen d'une unité de cerclage (1) selon l'une quelconque des revendications 1 à 12, la méthode comportant les étapes suivantes consécutives :
    - alimentation d'une bande métallique (3) dans le passage (4) formé entre les mâchoires principales (36a, 36b) et les éléments principaux du perforateur (11a, 11b) de façon à former une boucle sous tension de la bande métallique avec des parties qui se chevauchent mutuellement de la bande métallique reçues entres les éléments principaux de la matrice (31a, 31b, 31c, 31d) des mâchoires principales (36a, 36b) et les éléments principaux du perforateur (11a, 11b),
    - déplacement des éléments principaux du perforateur (11a, 11b) en position de perforation avec les mâchoires principales (36a, 36b) situées en position active de façon à couper des incisions mutuellement emboîtables (6) dans lesdites parties chevauchantes de la bande métallique par coopération entre les éléments principaux du perforateur (11a, 11b) et les éléments principaux de la matrice (31a, 31b, 31c, 31d),
    - retrait des éléments principaux du perforateur (11a, 11b) de la position de perforation et mouvement des mâchoires principales (36a, 36b) en éloignement de la position active de façon à libérer les parties qui se chevauchent de la bande métallique des éléments principaux de la matrice (31a, 31b, 31c, 31d) et leur permettre de glisser axialement l'un par rapport à l'autre sous l'effet de la tension inhérente à la boucle, permettant ainsi aux incisions (6) dans lesdites parties qui se chevauchent de la bande métallique de s'emboîter les unes avec les autres, et
    - déplacement de l'élément de sécurité du perforateur (21) en position de perforation avec les mâchoires auxiliaires (46a, 46b) situées en position active de façon à couper les incisions de sécurité (7) dans les parties qui se chevauchent de la bande métallique par coopération entre l'élément de sécurité du perforateur (21) et les éléments de sécurité de la matrice (41a, 41b).
EP09158691A 2009-04-24 2009-04-24 Unité et procédé de cerclage Active EP2243708B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09158691A EP2243708B1 (fr) 2009-04-24 2009-04-24 Unité et procédé de cerclage
AT09158691T ATE530449T1 (de) 2009-04-24 2009-04-24 Umreifungseinheit und verfahren
ES09158691T ES2376082T3 (es) 2009-04-24 2009-04-24 Unidad y procedimiento de flejado.
CN201010214435.8A CN101870367B (zh) 2009-04-24 2010-04-23 捆扎装置和方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09158691A EP2243708B1 (fr) 2009-04-24 2009-04-24 Unité et procédé de cerclage

Publications (3)

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EP2243708A1 EP2243708A1 (fr) 2010-10-27
EP2243708A8 EP2243708A8 (fr) 2011-04-27
EP2243708B1 true EP2243708B1 (fr) 2011-10-26

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CN (1) CN101870367B (fr)
AT (1) ATE530449T1 (fr)
ES (1) ES2376082T3 (fr)

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US10518914B2 (en) 2008-04-23 2019-12-31 Signode Industrial Group Llc Strapping device
US11999516B2 (en) 2008-04-23 2024-06-04 Signode Industrial Group Llc Strapping device
US9272799B2 (en) * 2011-10-04 2016-03-01 Signode Industrial Group Llc Sealing tool for strap
EP2578498B1 (fr) * 2011-10-05 2013-12-11 Sund Birsta AB Machine de reliure
CH705743A2 (de) 2011-11-14 2013-05-15 Illinois Tool Works Umreifungsvorrichtung.
CN102530294A (zh) * 2012-02-29 2012-07-04 秦皇岛西重所燕大重型机械研究院有限公司 金属带带头卡拉装置
ES2895662T3 (es) 2012-09-24 2022-02-22 Signode Int Ip Holdings Llc Dispositivo de flejado con un balancín pivotante
CH708294A2 (de) 2013-05-05 2014-12-15 Orgapack Gmbh Umreifungsvorrichtung.
WO2015117257A1 (fr) 2014-02-10 2015-08-13 Orgapack Gmbh Système de cerclage comprenant un dispositif d'avancement de bande
WO2016096003A1 (fr) * 2014-12-17 2016-06-23 Oetiker Schweiz Ag Outil de fixation d'une bride de serrage
USD864688S1 (en) 2017-03-28 2019-10-29 Signode Industrial Group Llc Strapping device
EP3670366B1 (fr) 2018-12-21 2021-06-16 Sund Birsta AB Machine de liaison et procédé pour tester la résistance d'un joint formé sur une boucle fermée d'un élément de liaison allongé

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CH307502A (de) * 1951-04-13 1955-05-31 Timmerbeil Erich Verfahren und Vorrichtung zur Herstellung hülsenloser Bandeisenverschlüsse.
DE2133714C3 (de) * 1971-07-07 1974-04-11 Titan Verpackungssysteme Gmbh, 5830 Schwelm Umreifungseinheit zum Umreifen von expansiven Gütern
US3794086A (en) 1972-08-30 1974-02-26 United States Steel Corp Apparatus for forming a seal-less type joint in overlapped flat strapping
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CN201023678Y (zh) * 2007-03-08 2008-02-20 叶守勇 药盒捆包机

Also Published As

Publication number Publication date
EP2243708A1 (fr) 2010-10-27
EP2243708A8 (fr) 2011-04-27
ATE530449T1 (de) 2011-11-15
CN101870367B (zh) 2014-04-09
ES2376082T3 (es) 2012-03-08
CN101870367A (zh) 2010-10-27

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