EP2243708B1 - Umreifungseinheit und Verfahren - Google Patents

Umreifungseinheit und Verfahren 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
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EP09158691A
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English (en)
French (fr)
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EP2243708A1 (de
EP2243708A8 (de
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 ES09158691T priority Critical patent/ES2376082T3/es
Priority to EP09158691A priority patent/EP2243708B1/de
Priority to AT09158691T priority patent/ATE530449T1/de
Priority to CN201010214435.8A priority patent/CN101870367B/zh
Publication of EP2243708A1 publication Critical patent/EP2243708A1/de
Publication of EP2243708A8 publication Critical patent/EP2243708A8/de
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Publication of EP2243708B1 publication Critical patent/EP2243708B1/de
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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. Umreifungseinheit zum Ausbilden einer verschlußlosen Verbindung in überlappenden Abschnitten an den Enden einer Metallbandschleife, die Umreifungseinheit umfassend:
    - ein Gehäuse (2),
    - einen Hauptstanzenhalter (10), der verschiebbar in dem Gehäuse (2) angebracht ist und ein oder mehr Hauptstanzenglieder (11a, 11b) trägt, wobei die ein oder mehr Hauptstanzenglieder zusammen mit dem Hauptstanzenhalter (10) zwischen einer eingezogenen Position und einer ausgefahrenen Stanzposition hin und her verschiebbar sind,
    - einen ersten Hauptstempelträger (30a), der beweglich in dem Gehäuse (2) angebracht ist und ein oder mehr Hauptstempelglieder (31a, 31b) trägt, die eine erste Hauptbacke (36a) ausbilden, und
    - einen zweiten Hauptstempelhalter (30b), der beweglich in dem Gehäuse (2) angebracht ist und ein oder mehr Hauptstempelglieder (31c, 31d) trägt, die eine zweite Hauptbacke (36b) ausbilden, welche der ersten Hauptbacke (36a) gegenüberliegt,
    wobei die Hauptbacken (36a, 36b) zusammen mit dem jeweiligen Hauptstempelhalter (30a, 30b) zwischen einer eingezogenen offenen Position und einer ausgefahrenen Wirkposition zueinander hin und voneinander weg beweglich sind, wobei die Hauptbacken (36a, 36b) in der Wirkposition zusammen eine Stützfläche für ein Metallband ausbilden, das in einem Durchgang (4) aufgenommen ist, welcher zwischen den Hauptbacken (36a, 36b) und dem einen oder mehr Hauptstanzengliedern (11a, 11b) ausgebildet ist, und
    wobei die Hauptstempelglieder (31a, 31b, 31c, 31d) und die ein oder mehr Hauptstanzenglieder (11a, 11b) zum Zusammenwirken zum Schneiden von ineinandergreifenden Einschnitten in überlappenden Abschnitten an den Enden einer Metallbandschleife angeordnet sind, die in dem Durchgang (4) aufgenommen ist, wenn das jeweilige Hauptstanzenglied (11a, 11b), mit den Hauptbacken (36a, 36b) in der Wirkposition, in die Stanzposition verschoben wird,
    dadurch gekennzeichnet,
    dass die Umreifungseinheit (1) ferner Folgendes umfasst:
    - einen Sicherheitsstanzenhalter (20), der verschiebbar in dem Gehäuse (2) angebracht ist und ein Sicherheitsstanzenglied (21) trägt, wobei das Sicherheitsstanzenglied zusammen mit dem Sicherheitsstanzenhalter (20) zwischen einer eingezogenen Position und einer ausgefahrenen Stanzposition hin und her verschiebbar ist,
    - einen ersten Sicherheitsstempelträger (40a), der beweglich in dem Gehäuse (2) angebracht ist und ein erstes Sicherheitsstempelglied (41a) trägt, das eine erste Hilfsbacke (46a) ausbildet, und
    - einen zweiten Sicherheitsstempelträger (40b), der beweglich in dem Gehäuse (2) angebracht ist und ein zweites Sicherheitsstempelglied (41 b) trägt, das eine zweite Hilfsbacke (46b) ausbildet, welche der ersten Hilfsbacke (46a) gegenüberliegt;
    dass die Hilfsbacken (46a, 46b) zusammen mit dem jeweiligen Hilfsstempelhalter (40a, 40b) zwischen einer eingezogenen offenen Position und einer ausgefahrenen Wirkposition zueinander hin und voneinander weg beweglich sind;
    dass die Hilfsbacken (46a, 46b) bezüglich der Hauptbacken (36a, 36b) beweglich sind, um zu ermöglichen, dass die Hilfsbacken (46a, 46b) in der Wirkposition verbleiben oder dorthin bewegt sind, wenn die Hauptbacken (36a, 36b) nach dem Schneiden von ineinandergreifenden Einschnitten in überlappenden Abschnitten an den Enden einer Metallbandschleife, die in dem Durchgang (4) aufgenommen ist, aus der Wirkposition weg bewegt werden; und
    dass die Sicherheitsstempelglieder (41a, 41 b) und das Sicherheitsstanzenglied (21) zum Zusammenwirken zum Schneiden von Sicherheitseinschnitten in überlappenden Metallbandabschnitten angeordnet sind, wenn das Sicherheitsstanzenglied (21), mit den Hilfsbacken (46a, 46b) in der Wirkposition, in die Stanzposition verschoben wird.
  2. Umreifungseinheit nach Anspruch 1, dadurch gekennzeichnet, dass der erste Hauptstempelhalter (30a) und der erste Sicherheitsstempelhalter (40a) schwenkbar an einem gemeinsamen Drehzapfen (9a) angebracht sind, und dass der zweite Hauptstempelhalter (30b) und der zweite Sicherheitsstempelhalter (40b) schwenkbar an einem anderen gemeinsamen Drehzapfen (9b) angebracht sind.
  3. Umreifungseinheit nach Anspruch 2, dadurch gekennzeichnet, dass der erste Sicherheitsstempelhalter (40a) in einer Aussparung in dem ersten Hauptstempelhalter (30a) aufgenommen ist, und dass der zweite Sicherheitsstempelhalter (40b) in einer Aussparung in dem zweiten Hauptstempelhalter (30b) aufgenommen ist.
  4. Umreifungseinheit nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,
    - dass der erste Hauptstempelhalter (30a) zwei Hauptstempelglieder (31 a, 31 b) trägt;
    - dass der zweite Hauptstempelhalter (30b) zwei Hauptstempelglieder (31 c, 31 d) trägt;
    - dass sich das erste Sicherheitsstempelglied (41a) zwischen den zwei Hauptstempelgliedern (31a, 31b) befindet, die von dem ersten Hauptstempelhalter (30a) getragen sind;
    - dass sich das zweite Sicherheitsstempelglied (41 b) zwischen den zwei Hauptstempelgliedern (31c, 31d) befindet, die von dem zweiten Hauptstempelhalter (30b) getragen sind;
    - dass der Hauptstanzenhalter (10) zwei Hauptstanzenglieder (11a, 11b) trägt; und
    - dass sich das Sicherheitsstanzenglied (21) zwischen den zwei Hauptstanzengliedern (11a, 11b) befindet.
  5. Umreifungseinheit nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Umreifungseinheit (1) Folgendes umfasst:
    - ein erstes Stempelstellglied (32a),
    - einen ersten Verbindungsmechanismus (37a), über den der erste Hauptstempelhalter (30a) und der erste Sicherheitsstempelhalter (40a) mit dem ersten Stempelstellglied (32a) verbunden sind,
    - ein zweites Stempelstellglied (32b) und
    - einen zweiten Verbindungsmechanismus (37b), über den der zweite Hauptstempelhalter (30b) und der zweite Sicherheitsstempelhalter (40b) mit dem zweiten Stempelstellglied (32b) verbunden sind;
    dass die erste Hauptbacke (36a) und die erste Hilfsbacke (46a) zwischen offener Position und Wirkposition und in Bezug zueinander unter der Einwirkung des ersten Stempelstellglieds (32a) und des ersten Verbindungsmechanismus (37a) beweglich sind; und
    dass die zweite Hauptbacke (36b) und die zweite Hilfsbacke (46b) zwischen offener Position und Wirkposition und in Bezug zueinander unter der Einwirkung des zweiten Stempelstellglieds (32b) und des zweiten Verbindungsmechanismus (37b) beweglich sind.
  6. Umreifungseinheit nach Anspruch 5, dadurch gekennzeichnet, dass das jeweilige Stempelstellglied (32a, 32b) einen hydraulisch oder pneumatisch betätigten Kolben umfasst, der verschiebbar in einem Kolbenhohlraum in dem Gehäuse (2) angebracht ist.
  7. Umreifungseinheit nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet,
    - dass der Hauptstanzenhalter (10) mithilfe eines ersten Stanzenstellglieds verschiebbar ist, das eine Kolbenstange (13) umfasst, welche mit einem hydraulisch oder pneumatisch betätigten Kolben (14) verbunden ist;
    - dass der Sicherheitsstanzenhalter (20) mithilfe eines zweiten Stanzenstellglieds verschiebbar ist, das eine Kolbenstange (23) umfasst, welche mit einem hydraulisch oder pneumatisch betätigten Kolben (24) verbunden ist; und
    - dass die Kolbenstangen (13, 23) des ersten und zweiten Stanzenstellglieds koaxial angeordnet sind, wobei eine Kolbenstange (23) durch die andere Kolbenstange (13) verläuft.
  8. Umreifungseinheit nach Anspruch 7, dadurch gekennzeichnet, dass die Kolbenstange (23) des zweiten Stanzenstellglieds durch die Kolbenstange (13) des ersten Stanzenstellglieds verläuft.
  9. Umreifungseinheit nach Anspruch 8, dadurch gekennzeichnet,
    - dass der Kolben (14) des ersten Stanzenstellglieds verschiebbar in einem ersten Kolbenhohlraum (15) in dem Gehäuse (2) angebracht ist;
    - dass der Kolben (24) des zweiten Stanzenstellglieds verschiebbar in einem zweiten Kolbenhohlraum (25) in dem Gehäuse (2) angebracht ist, der sich über dem ersten Kolbenhohlraum (15) befindet.
  10. Umreifungseinheit nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet,
    - dass die Umreifungseinheit (1) ein Greifelement (50) umfasst, das verschiebbar in dem Gehäuse (2) angebracht ist, wobei das Greifelement (50) zwischen einer eingezogenen Bandfreigabeposition und einer ausgefahrenen Bandgreifposition hin und her verschiebbar ist;
    - dass das Greifelement (50) auf seiner Unterseite mit einer Greiffläche (51) versehen ist;
    - dass die jeweilige Hauptbacke (36a, 36b) an ihrem hinteren Ende auf ihrer Oberseite mit einer Greiffläche (38) versehen ist; und
    - dass die Greiffläche (51) des Greifelements und die Greiffläche (38) der jeweiligen Hauptbacke zum Zusammenwirken zum Greifen eines Metallbandes angeordnet sind, das zwischen dem Greifelement (50) und den Hauptbacken (36a, 36b) verläuft, wenn das Greifelement, mit den Hauptbacken (36a, 36b) in der Wirkposition, in die ausgefahrene Bandgreifposition verschoben wird.
  11. Umreifungseinheit nach Anspruch 10, dadurch gekennzeichnet, dass das Greifelement (50) mithilfe eines Stellglieds verschiebbar ist, das einen hydraulisch oder pneumatisch betätigten Kolben (54) umfasst, welcher in einem Kolbenhohlraum (55) in dem Gehäuse (2) angebracht ist.
  12. Umreifungseinheit nach einem der Ansprüche 6, 9 oder 11, dadurch gekennzeichnet, dass das Gehäuse (2) einen pneumatischen oder hydraulischen Block (5) umfasst, wobei der jeweilige Kolbenhohlraum und Druckmittelkanäle zu dem jeweiligen Kolbenhohlraum führen, der in diesem Block ausgebildet ist.
  13. Verfahren zum Ausbilden einer verschlußlosen Verbindung in überlappenden Abschnitten an den Enden einer Metallbandschleife mithilfe einer Umreifungseinheit (1) gemäß einem der Ansprüche 1 bis 12, wobei das Verfahren die folgenden aufeinanderfolgenden Schritte umfasst:
    - Zuführen eines Metallbandes (3) in den Durchgang (4), der zwischen den Hauptbacken (36a, 36b) und den Hauptstanzengliedern (11a, 11b) ausgebildet ist, zum Ausbilden einer gespannten Metallbandschleife mit einander überlappenden Metallbandabschnitten, die zwischen den Hauptstempelgliedern (31a, 31b, 31c, 31d) der Hauptbacken (36a, 36b) und den Hauptstanzengliedern (11a, 11b) aufgenommen sind;
    - Verschieben der Hauptstanzenglieder (11a, 11b) in die Stanzposition mit den Hauptbacken (36a, 36b) in der Wirkposition zum Schneiden von ineinandergreifenden Einschnitten (6) in die überlappenden Metallbandabschnitte durch Zusammenwirkung zwischen den Hauptstanzengliedern (11a, 11b) und den Hauptstempelgliedern (31a, 31b, 31c, 31d);
    - Zurückziehen der Hauptstanzenglieder (11a, 11b) aus der Stanzposition und Bewegen der Hauptbacken (36a, 36b) weg aus der Wirkposition zum Freigeben der überlappenden Metallbandabschnitte aus den Hauptstempelgliedern (31a, 31b, 31c, 31d) und zum Ermöglichen, dass sie in Bezug zueinander unter der Einwirkung der Eigenspannung der Schleife axial gleiten, wodurch ermöglicht wird, dass die Einschnitte (6) in den überlappenden Metallbandabschnitten ineinandergreifen; und
    - Verschieben der Sicherheitsstanzenglieder (21) in die Stanzposition mit den Hilfsbacken (46a, 46b) in der Wirkposition zum Schneiden von Sicherheitseinschnitten (7) in die überlappenden Metallbandabschnitte durch Zusammenwirkung zwischen dem Sicherheitsstanzenglied (21) und den Sicherheitsstempelgliedern (41a, 41 b).
EP09158691A 2009-04-24 2009-04-24 Umreifungseinheit und Verfahren Active EP2243708B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES09158691T ES2376082T3 (es) 2009-04-24 2009-04-24 Unidad y procedimiento de flejado.
EP09158691A EP2243708B1 (de) 2009-04-24 2009-04-24 Umreifungseinheit und Verfahren
AT09158691T ATE530449T1 (de) 2009-04-24 2009-04-24 Umreifungseinheit und verfahren
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 (de) 2009-04-24 2009-04-24 Umreifungseinheit und Verfahren

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EP2243708A1 EP2243708A1 (de) 2010-10-27
EP2243708A8 EP2243708A8 (de) 2011-04-27
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US11999516B2 (en) 2008-04-23 2024-06-04 Signode Industrial Group Llc Strapping device
US10518914B2 (en) 2008-04-23 2019-12-31 Signode Industrial Group Llc Strapping device
US9272799B2 (en) * 2011-10-04 2016-03-01 Signode Industrial Group Llc Sealing tool for strap
EP2578498B1 (de) * 2011-10-05 2013-12-11 Sund Birsta AB Drahtbindemaschine
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
CH707027A2 (de) 2012-09-24 2014-03-31 Illinois Tool Works Umreifungsvorrichtung mit einer schwenkbaren Wippe.
CH708294A2 (de) 2013-05-05 2014-12-15 Orgapack Gmbh Umreifungsvorrichtung.
WO2015117256A1 (de) 2014-02-10 2015-08-13 Orgapack Gmbh Umreifungseinrichtung
WO2016096003A1 (de) * 2014-12-17 2016-06-23 Oetiker Schweiz Ag Werkzeug zum befestigen einer spannschelle
USD864688S1 (en) 2017-03-28 2019-10-29 Signode Industrial Group Llc Strapping device
EP3670366B1 (de) 2018-12-21 2021-06-16 Sund Birsta AB Bindemaschine und verfahren zum prüfen der festigkeit einer verbindung auf einer geschlossenen schleife eines länglichen bindevorrichtungselements

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Also Published As

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

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