EP2897866A1 - Dispositif de banderolage présentant une bascule pivotante - Google Patents

Dispositif de banderolage présentant une bascule pivotante

Info

Publication number
EP2897866A1
EP2897866A1 EP13805503.3A EP13805503A EP2897866A1 EP 2897866 A1 EP2897866 A1 EP 2897866A1 EP 13805503 A EP13805503 A EP 13805503A EP 2897866 A1 EP2897866 A1 EP 2897866A1
Authority
EP
European Patent Office
Prior art keywords
strapping
clamping
tensioning
wheel
rocker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13805503.3A
Other languages
German (de)
English (en)
Other versions
EP2897866B1 (fr
Inventor
Favio FINZO
Mirco Neeser
Dimitrios Takidis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Signode International IP Holdings LLC
Original Assignee
Signode International IP Holdings LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Signode International IP Holdings LLC filed Critical Signode International IP Holdings LLC
Publication of EP2897866A1 publication Critical patent/EP2897866A1/fr
Application granted granted Critical
Publication of EP2897866B1 publication Critical patent/EP2897866B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/22—Means for controlling tension of binding means
    • 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
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • 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
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/025—Hand-held tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/185—Details of tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/185—Details of tools
    • B65B13/187—Motor means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive
    • B65B13/322—Friction welding

Definitions

  • the invention relates to a strapping device for strapping of packaged goods with a strapping, which has a tensioning device for applying a belt tension on a loop of a strapping, wherein the tensioning device is provided with a motor rotatably driven about a clamping axis tensioning wheel, which is provided for engagement in the strapping in that the tensioning device further comprises a tensioning plate, wherein during a tensioning operation performed by the tensioning device it is provided that a single or multilayered portion of the strapping belt is located between the tensioning wheel and the tensioning plate and is in contact with both the tensioning wheel and the tensioning plate the tensioning wheel and / or the clamping plate is arranged on a rocker pivotable about a rocker axis by a motor in order to either increase or decrease a distance between the tensioning wheel and the tensioning plate by a pivoting movement of the rocker, and a connection device for producing a permanent connection, in particular a welded connection, on two superimposed areas of the loop of the strapping band by means
  • Such strapping devices are used for strapping packaged goods with a plastic band.
  • a loop of the respective plastic strip is placed around the packaged goods.
  • the plastic tape is hereby deducted from a supply roll.
  • the end portion of the band overlaps with a portion of the band loop.
  • the strapping device is then applied to this two-day region of the band, in which case the band is clamped in the strapping device, a band tension is applied to the band loop by means of the tensioning device, and a closure is produced by friction welding to the loop between the two band layers.
  • the belt loop is pressed onto the belt with an oscillatingly moving friction shoe in the region of two ends.
  • the pressure and the heat generated by the movement melts the usually plastic having Tape up locally for a short time. This creates between the two band layers a permanent and at most with great force again to be solved connection between the two band layers. Thereafter, or approximately simultaneously, the loop is separated from the supply roll. The respective packaged goods are thereby strapped.
  • Generic strapping devices are provided for mobile use, in which the devices carried by a user to the respective site and should not rely on the use of externally supplied supply energy.
  • the energy required for the intended use of such strapping devices for tensioning a strapping band around any packaged goods and for producing a closure is generally provided by previously known strapping devices by an electric accumulator or by compressed air. With this energy, the belt tension introduced by means of the tensioning device onto the belt and a closure on the strapping belt are produced.
  • Generic strapping devices are also intended to connect only weldable plastic straps together.
  • a light weight is of particular importance in order to physically burden the users of the strapping device as little as possible when using the device.
  • the weight of the entire strapping device should be as uniform as possible, in particular in order to avoid concentration of the weight in the head region of the strapping device. Such a concentration leads to unfavorable handling characteristics of the device.
  • a possible ergonomic and user-friendly handling of the strapping device is always sought. In particular, the possibility of operating errors and malfunctions should be as low as possible.
  • the tensioning wheel is provided with teeth and is pressed with a pressing force on the clamping plate.
  • the pressing force can result in previously known solutions of a spring with which pressed the rocker with the tensioning wheel disposed thereon against the belt and the clamping plate arranged thereunder.
  • these solutions can not be particularly satisfactory if higher belt tensions are to be generated since, as has been shown, slip during the tensioning process can not be sufficiently reliably prevented hereby.
  • the invention is therefore an object of the invention to provide a generic, in particular a mobile, strapping device of the type mentioned above with high reliability, in which the intended tape tension can be applied safely and as possible slip on the tape.
  • a strapping device of the aforementioned type according to the invention that at least temporarily during the transmission of the motor drive movement on the tensioning wheel, preferably as long as the tensioning wheel is engaged with the belt, by means of at least one transmission means of the strapping a drive movement to during the duration of the clamping operation is transmitted at least temporarily pivotable rocker, wherein the drive movement is provided for applying a torque to the rocker.
  • the torque exerted on the rocker can be used to increase the contact pressure of the tensioning device against the strapping band.
  • the torque exerted on the rocker by transmission means can originate from a motor whose drive torque is variable, the pressure force of the rocker against the belt in the course of the tensioning process increases.
  • the motor-related increase takes place in such a way that it takes place above all during or after an increase in the band tension. It is advantageous in this case if, for the generation of the motor torque for the rocker, a motor is used which also carries out other drive movements. It is particularly advantageous if the motor and its drive movement is used with which the tensioning wheel is driven. On the one hand, a further motor can thereby be avoided, but nevertheless the function according to the invention can be exercised. On the other hand, with increasing belt tension usually also increasing engine torque can be used to increase the contact pressure. This allows a structurally particularly simple way a variable, voltage-dependent pressing the rocker against the tape. Preferably, the latter can be done in proportion to the applied band tension.
  • a torque can also be exerted and transmitted to the rocker, which is based on a force exerted on the tensioning device by the band at an engagement point of the band with the tensioning device.
  • This force which is a Reactio
  • the force applied by the driven tensioning wheel on the band clamping force can be tapped at a suitable location and transmitted with transfer agent on the rocker.
  • preferably acting on the tensioning belt tensioning on the tensioning wheel itself can already be used. This can be used in particular as torque acting on the tensioning wheel in each case, which is introduced from the tensioning wheel into the transmission means of the tensioning device and transmitted by the latter to the rocker.
  • the motor drive movement for the clamping device at least indirectly as Reactio, also used to use the motor driven by the rotational movement of the tensioning wheel and a pivoting movement of the rocker during the tensioning one of the with the Umreifungsband in EingriJf standing tensioning wheel derived torque can be introduced by means of transmission means in the rocker in order to increase a contact force of the tensioning device against the belt.
  • a gear of the tensioning device with which a motor drive movement for the tensioning wheel is translated or translated be part or all of the transmission means with which the force acting on the tensioning wheel and resulting from the belt tension force from the tape on the rocker is transmitted.
  • the invention can also be seen in a further aspect in that means are provided for the tape tension-dependent variable pressing of the tensioning wheel or the clamping plate to the strapping.
  • the invention thus provides during the clamping phase, a band voltage-dependent variable pressing of the clamping device against the strapping.
  • the belt tension generated by the clamping operation is thus used to increase in an advantageous manner with steadily increasing belt tension and the pressing force of the tensioning wheel and / or the clamping plate on the tape, thereby increasing in itself with increasing belt tension danger
  • the contact force of the tensioning wheel on the belt and the tensioning plate thus allowing the invention in such embodiments to exert a high contact pressure force on the belt
  • the risk of slippage between the tensioning wheel and the belt is also particularly high ecting risk of slippage counteracted and thus the reliability and a fast-running strapping be ensured even at high belt tensions.
  • the transmission means which advantageously represent an operative connection from the tensioning wheel to the rocker, comprise a pivotable mounting of the rocker at least during the tensioning operation and a rotatably mounted or rotatably mounted gear element, which is in operative connection with the tensioning wheel during the tensioning operation ,
  • the reaction force of the band is preferably used as torque and introduced into the rotatable or rotatable gear element, for example, a planet carrier of a planetary gear.
  • the rotatable or rotatable transmission element should be supported against the rotary or rotary motion on a support element.
  • the reaction force of the tensioning wheel can then be introduced via or due to the support in the rocker, whereby an additional torque acts on the rocker, which can be used to increase the pressing force of the rocker against the strapping.
  • the transmission means may advantageously be wholly or partly part of the tensioning gear, with which a motor or derived from other Energyfzubuch drive movement is passed at a suitable speed to the tensioning wheel.
  • motor drive movements can be used with identical directions of rotation of only one motor, except for the drive of the tensioning wheel when tensioning the strapping band for raising the rocker.
  • the same drive movement can also be used to make the tension-dependent variable pressing of the tensioning wheel on the belt to be tensioned.
  • the dependence is in this case provided such that with increasing belt tension and the force exerted by the tensioning wheel contact force increases to the belt.
  • the same direction of motor rotation is used as for clamping.
  • the motor drive movement during tensioning of the belt can preferably be used such that during the tensioning operation of the strapping belt by means of engaging in the strapping and rotating against a belt tension a tensioning belt from strapping to the tensioning wheel acting counterforce is used to the contact pressure of the tensioning wheel tensioning wheel in the direction to increase the clamping plate.
  • a resulting from the belt tension and retroactive in a transmission force can be held and released, with which a drive movement is transmitted to the tensioning wheel.
  • the invention thus relates to a locking device for use in a strapping device, with which a rotatable wheel can be clamped, which is provided for transmitting a drive movement, in particular a gear of a tensioning device of the strapping device.
  • the inventive locking device should have at least one pivotable about a pivot axis and spaced from the wheel clamp body which is pivotable from a release position to a locked position in which he - preferably with a portion of an arcuate contact surface - in abutment against a substantially flat, ie form gleich institutenbuild, circumferential clamping surface of the wheel passes, wherein the clamping body has a pivot radius which is greater than a distance of the pivot axis of the clamping body to the peripheral clamping surface of the wheel, and the direction of rotation of the clamping body about the pivot axis in the transfer from the release position to a clamping position in opposite directions of rotation as the wheel to be clamped runs.
  • the inventive locking device can be used with advantage in particular for releasably locking a wheel of a transmission, which belongs to a transmission with which a drive movement is to be transmitted to a tensioning wheel of the clamping device of a strapping device. It may be provided in this context, in particular for clamping a wheel of a planetary gear, with which the drive movement is to be transmitted to the tensioning wheel. With or at least with the aid of a clamping of the wheel to be clamped, one of at least two output directions of the transmission can be determined, in particular an output direction of the transmission on the tensioning wheel, so that the band can be tensioned,
  • the invention provides particularly reliable and easy-to-use strapping devices.
  • the low operating and actuation forces also make it possible to dispense with a rocker lever, were previously generated with the previously high strains in prior art strapping devices for lifting the rocker from the strained band.
  • a button or button can now be used, with the or the stress-releasing process takes place.
  • FIG. 1 perspective view; an exploded view of the clamping device of the strapping device of Figure 1 together with the motor.
  • Urnreifungs réelle 1 has a housing 2, which surrounds the mechanism of the strapping device and on which a handle 3 for handling the device is formed.
  • the Urnreifungs réelle is further provided with a base plate 4, the underside of which is provided for placement on an object to be packaged. On the base plate 4 and connected to the base plate not shown carrier of the strapping device all functional units of the strapping device 1 are attached.
  • a plastic tape B for example, polypropylene (PP) or polyester (PET), which was previously placed around the article to be packaged by means of a clamping device 6 of the strapping device.
  • the clamping device has for this purpose a tensioning wheel 7, with which the band B can be detected for a clamping operation.
  • the tensioning wheel 7 is arranged on a pivotable rocker 8, which can be pivoted about a rocker pivot axis 8a.
  • the tensioning wheel 7 can be removed from the clamping plate 9 and pivoted back to its original position, whereby the located between the tensioning wheel 7 and the Spannpiatie 9 tape is released for removal.
  • the friction welding and separating device 12 is driven by the same only one motor M of the strapping, with which all other motor-driven movements are performed.
  • the motor M in a manner known per se in the transmission direction from the motor M to the points at which the motor drive movement provided in detail not shown in detail freewheel, is effected by the fact that the drive movement in the respectively provided driving direction of rotation to the corresponding functional unit of the Strapping device is transmitted and in the respectively provided other driving direction of rotation of the motor no transmission takes place.
  • the friction-welding device 12 is provided with a welding shoe 13 shown only in a highly schematized manner, which is transferred by means of a transfer device 14 from a rest position with distance to the belt into a welding position in which the welding shoe is pressed against the belt.
  • the hereby pressed by mechanical pressure on the strapping band welding shoe and the simultaneous taking place oscillating movement of the welding shoe with a predetermined frequency melts the two layers of Umreifungsbands.
  • the locally plasticized or melted areas of the band B flow into each other and after cooling of the band B then creates a connection between the two band layers. If necessary, then the belt loop can be separated from a supply roll of the tape by means of a cutting device of the strapping device 1, not shown.
  • the strapping device is provided to tap off at two points of the drive axis of the motor M its drive movement either for the clamping device 6 or for the friction-welding device 12.
  • the motor M can be operated in each of the two directions of rotation.
  • the change of the transmission of the Antiiebsterrorism to the clamping device 6 or the friction-welding device 12 is effected by a arranged on the drive shaft of the motor M (and not shown) freewheel automatically in response to the direction of rotation of the drive shaft of the motor. In one direction of rotation of the drive shaft, the drive movement is transmitted to the clamping device 6. Due to the freewheel, the friction-welding device 12 experiences no drive movement here.
  • the motor transmission of the drive movement takes place on the friction-welding device 12 and transfer device 14 by suitable means.
  • This may be, for example, a toothed belt drive with a ring-shaped closed timing belt, which is guided over two gears.
  • One of the two gears is arranged on the drive shaft of the electric motor M, the other belongs to a transmission of the friction-welding device 12, with which the motor drive movement both the transfer device 14 and the welding shoe 13 of Friction Welding device 12 moves.
  • the welding shoe pressed onto two superimposed layers of the strapping band can hereby be set into an oscillating movement of predetermined frequency and amplitude with which the two band layers are locally melted in the area of the welding shoe and welded together by the subsequent cooling.
  • a bevel gear 19 which also belongs to a bevel gear of the clamping device, such as a second bevel gear 20, with which it meshes.
  • a first gear 21 of a further toothed belt drive 22 which is also guided via a second gear 23.
  • the first gear 21 of the toothed belt drive 22 is rotatably mounted on the shaft 24.
  • the rocker 8 of the strapping device is pushed, which is part of the tensioning device 6 and the tensioning wheel 7 and a tensioning wheel 7 upstream gear, here a planetary gear 26 carries what it can be provided on the rocker 8 suitable bearings ,
  • the rocker 8 is pushed onto the shaft 24 such that it is arranged and supported pivotably about the longitudinal axis of the shaft 8.
  • the longitudinal axis of the shaft 24 is thus simultaneously the rocker pivot axis 8a, about which the rocker 8 is pivotable.
  • the planetary gear 26 may be formed as a single or multi-stage planetary gear, in particular as a two- or three-stage planetary gear. From an end face of the gearwheel 23 facing the tensioning wheel 7, there is an input-side externally toothed sun gear 30 belonging to the planetary gear 26, whose axis of rotation is identical to the axis of rotation 6a of the input-side gearwheel 23. On a shaft of the gear 23, on which in the Austallungsbeispiel also the sun gear 30 is formed, is a freewheel 45, which allows only one direction of rotation of the sun gear 30, namely the direction of rotation, which is provided for driving the tensioning wheel.
  • the sun gear 30 is passed through a ring gear 27 and through a central recess of a planetary carrier 25, which are also part of the planetary gear 26. Seen from the input side of the planetary gear, the planet carrier 25 is on the axis of the planetary gear 26, the the clamping axis 6a corresponds, disposed behind the ring gear 27.
  • the planet carrier could also be designed so that it represents a clamp, clutch or spur gear.
  • the ring gear 27 has on its outer periphery a cam 27c which is in engagement with a rfungsvorraum to the base plate 4 of the Umre 'fixed support 46th
  • the internally toothed ring gear 27 is supported here in such a way that the cam 27c can make slight relative movements within its engagement in the support 46, for example in a recess 46a of the support.
  • the ring gear 27 also has an annular shoulder 27a, on which a roller bearing 28 for supporting the planetary gear 26 is arranged.
  • the planet carrier 25 whose axis is aligned with the clamping axis 6a, stands with its three planetary gears 25b in engagement with an internal toothing of the input-side ring gear 27 of the planetary gear 26.
  • the planetary gears 25b of the planet carrier 25 are also in engagement with the sun gear 30 of which they have a Incorporate drive movement and can transmit to the ring gear 27 and appropriately stocky. With rotationally fixed arrangement of the planet carrier 25, a rotational movement of the sun gear 30 can thus be converted into a rotational movement of the ring gear 27.
  • a first terminal 29 of a locking device is designed as a pivotable cam which can be brought into contact with a clamping surface 25a on the outer circumference of the planet carrier 25 or pivoted away from it at a distance.
  • the cam is in this case arranged so that upon contact of the cam with the clamping surface 25a by a rotation of the input side planetary carrier 25 in the direction of rotation provided for the planet carrier 25, the clamping effect is further enhanced.
  • the cam 29 can be removed from the clamping surface 25a and thus the planet carrier 25 are released for rotational movements.
  • the switching process can in this case trigger a pivoting movement of the terminal 29 about a switching axis 143, which is triggered by pressing a button 44.
  • the sun gear 30 is also arranged in the region of the axis of rotation 31 of a ring gear 32, the non-toothed outer surface 32a of a second terminal 33 is associated.
  • the rotation axis 31 is identical to or aligned with the clamping axis 6a.
  • the cooperating with the outer surface 32a clamp 33 may be formed in principle the same way as the first terminal 29 as a switchable cam which can be moved between two end position, in one position the ring gear 32 blocks against rotation and in the other position for rotational movements is released.
  • an internal toothing of the ring gear 32 is in engagement with three planetary gears 34, which are mounted on the end facing the ring gear 32 of the following planetary carrier 35.
  • the planet gears 34 of the planet carrier 35 are also in engagement with the sun gear 30 of the input-side gear 23, which projects into the ring gear 32.
  • the locking device is designed in the described preferred embodiment such that always one and only one of the wheels 25, 32 clamped against rotation and the other wheel 25, 32 is free for rotational movements It is thus in dependence on the positions of the locking devices 29, 33 possible that a rotational movement of the gear 23 and the sun gear 30 leads either to a rotation of the planet carrier 35 about the clamping axis 6a and rotation axis 31 due to movement of the planetary gears 34 in the internal toothing of the ring gear 32. Or the rotation of the sun gear 30 leads in dependence of the positions of the locking device to a rotation of the ring gear 32. If the planet carrier 25 is not clamped by the locking device, the rotating sun gear takes the planet gears 25b so that the planet carrier 25 rotates and the ring gear 27th remains stationary.
  • the third planet carrier 37 has on its outer surface on a shoulder 37 a, which can be brought by a rotational movement against a stop member 39 in contact.
  • the stopper member 39 itself is not fixed to the rocker but to the base plate 4 or other support that does not participate with the rocker 8 in its pivotal movement.
  • the stop element 39 is thus stationary with respect to the paragraph 37 a.
  • a portion of the band B immediately adjacent to the band loop is laid over the tensioning plate 9 of the tensioning device 6 in a double-layered manner.
  • the rocker 8 with the tensioning wheel 7 and the upstream gear 26 is in this case in its upper end position in which the tensioning wheel 7 is arranged at a distance (with its largest intended distance) to the clamping plate 9, resulting in the largest possible opening gap, the one simple, comfortable and thus a quick insertion of the tape in the clamping device allows.
  • the rocker is lowered to a clamping wheel 7 opposite clamping plate 9 and pressed against the arranged between the clamping plate 9 and the tensioning wheel 7 band.
  • Both of these Transfer movement of the tensioning wheel and the height of the force exerted at the beginning of the clamping operation of the tensioning wheel on the belt contact pressure can be generated in the described embodiment of the invention by one or more prestressed spring elements 44 (not shown).
  • the Federlement By pressing a button 10, the Federlement can be released and the entire strapping process with its successively executed operation sections “clamping”, “closure generation”, “cutting”, releasing the tension from the band in the Spann heard.und “raising the rocker” are triggered, including preferably no further intervention by the operator of the strapping device must be made.
  • the motor drive movement which is transmitted due to the intended direction of rotation of the motor M via the bevel gear 19, 20, 21 to the second toothed belt drive 22 and thus to the gear 23, passes from here in the order of the following gear members via the input-side gear 23rd , the sun gear 30, the planetary gears 34, the sun gear 36, the planet gears 41, the sun gear 43 and the planetary gears 38 on the tensioning wheel 7.
  • the tensioning wheel 7 can inter alia by the multi-stage planetary gear in strong understated rotational movement of the engine - and thus at Need with a correspondingly high torque - are driven in the predetermined direction of rotation.
  • this counterforce acts in the reverse direction of transmission as the motor drive movement, all on the Transmission of the drive movement involved gear members of the multi-stage planetary gear. If a different type of transmission is used as a single or multi-stage planetary gear, it is also on this from the already applied belt tension resulting and introduced via the contact with the tensioning wheel in the respective gear counterforce for use in the context of the present invention at the disposal , According to the invention, this counterforce can be used to improve the process conditions, in particular the functional reliability, even at high belt tensions to be applied. In order to use this counterforce for the purpose described below, it would thus be possible in principle to use each of these gear members for this purpose, in particular to tap off and use said counterforce on each of these gear members.
  • the planet carrier 37 is used for this purpose.
  • the planetary carrier 37 is in this case supported on the base plate 4 via the abutment element 39, as a result of which the entire clamping device 6 is pressed onto the belt by the rocker axis 8a in proportion to the resistance force (belt tension).
  • the tensioning wheel 7 is thus pressed proportional to the belt tension on the belt B.
  • the belt tension generated by the tensioning process is used to increase in an advantageous manner with steadily increasing belt tension and the pressing force of the tensioning wheel 7 on the belt B, whereby the increasing in itself with increasing belt tension danger of "slipping" or slippage of the tensioning wheel 7 counteracted during the clamping process.
  • the planet carrier is for this purpose formed with the engagement element 37a, which cooperates with the stationary stop element 39.
  • the formed as a cam and arranged on the outer periphery of the planet carrier and of this substantially radially projecting engagement element is supported on the stop element 39 from.
  • the fixed stop element 39 is located in the region of the head end of the strapping device for this purpose.
  • the stop element 39 is located in the embodiment shown on the one side, namely the head end, the clamping axis 6a and the rocker pivot axis 8a extending substantially parallel to it on the other side of the clamping axis 6a.
  • the rocker 8, on which the planet carrier 37 is arranged rotatably about the tensioning axis 6a via a roller bearing, is also at least during the tensioning process swiveling, ie not blocked against pivoting movements but released for this purpose.
  • the planet carrier 37 is rotatable about the clamping axis 6a during the clamping operation.
  • the belt tension generated in response to the tensioning operation in the band B causes one of the tensioning operation provided in the direction of rotation of the tensioning wheel opposite force on the tensioning wheel 7.
  • This reaction force acts from the tensioning wheel on the planet carrier 37 on the rocker 8 as directed to the rocker pivot axis 8a torque through that the planet carrier 37 is pressed with increased force against the tape in the direction of the clamping plate 9.
  • a complication-free and fast removal of the tape from the strapping device should be possible.
  • a motoric lifting movement of the tensioning wheel 7 is provided from the clamping position.
  • the key is pressed and as long as the key 10 is actuated, the rocker remains in the open position, in which a sufficient distance between the clamping plate 9 and the tensioning wheel 7 is created.
  • the rocker is closed, for example by spring force ..
  • the operative connection between the electric motor Wl and the Spänhrad 7 is first solved and created an operative connection between the electric motor M and the rocker 8. This is achieved by switching the terminals 29, 33.
  • the previously existing clamping of the ring gear 32 is canceled by the fact that the second terminal 33 of the outer surface 32 a of the ring gear 32nd is removed and thereby releases the ring gear 32 for rotational movements.
  • the first clamp 29 is lowered onto the clamping surface 25a of the planetary carrier 25 and brought into clamping engagement therewith.
  • the input-side planetary carrier 25 is fixed and locked against a rotational movement about the clamping axis 6a, along which the entire planetary gear is located.
  • the tensioning wheel 7 can thereby rotate freely without drive and has no operative connection to the electric motor M and the sun gear 30 more, which could transmit a drive movement.
  • a drive movement of the electric motor with the same direction of rotation as in the clamping operation is now used due to the blocking of the input side planetary carrier 25 of the planetary gear to the planetary gears 25b of the spur gear 25 take the input-side ring gear 27 during its rotational movement.
  • the input-side ring gear 27 thus performs a rotational movement due to the rotating planetary gears 25b.
  • the system and support of the ring gear 27 on the support element 46 leads to a pivoting movement of the ring gear 27 about the rocker axis 8a.
  • the rotational movement of the rocker 8 may be limited by a stop or Endpositionsgeber, the motor M after reaching an end position in the open position of the rocker. 8 switches off and triggers a locking of the rocker.
  • the motoric lifting movement of the rocker 8 against the effective direction of the spring element 44 and the spring element 44 is provided again with an increased biasing force.
  • the strapping B can now be removed from the strapping device 1.
  • the strapping device is now ready for a subsequent new strapping, which can be done in the same manner as the strapping described above.
  • muse spring element 44 are released again, which can be done for example via an operable button on the strapping. In the embodiment, this is the previously actuated key 10 is released.
  • the spring force then pivots the rocker 8 in now reversed pivoting direction to the clamping plate and clamped for the subsequent clamping operation, the band with an initial pressing force between the tensioning wheel 7 and the clamping plate 9 a.
  • the variable in the course of the clamping operation pressing force increases as described.
  • FIGS. 5 to 9 show a further exemplary embodiment of a strapping device according to the invention. With regard to its external appearance, this too can correspond to the representation of FIG.
  • the basic construction of this embodiment of the strapping apparatus may also correspond to that of the preferred embodiment according to the invention discussed above. Accordingly, in this embodiment, only a motor M is used, which is provided not shown in Fig. 5 welding device 12 and separating device on the one hand in one of the two engine rotation directions and the tensioning device 6 on the other hand in the other direction of motor rotation.
  • the tensioning wheel 87 but the tensioning plate 89 is arranged here on the pivotable rocker 80, whose rocker pivot axis 80a extends parallel to the tensioning axis 86a.
  • the motor drive movement with the direction of rotation which is used for rotational movements about the clamping axis 86a, is also used in this embodiment for pivotal movement of the rocker 80.
  • the rocker pivot axis 80a extends also in this embodiment substantially parallel to the clamping axis 86a, around which the tensioning wheel is rotatably mounted.
  • the rotational movement of the motor is transmitted via a bevel gear pair 99, 100 to a planetary gear 106 behind a point at which the motor drive movement is used for the welding device and passed from this to the tensioning wheel 87.
  • a planetary gear 106 With a arranged on the shaft of an input side sun gear 110 freewheel 125 ensures that the input side of Planetary gear 106 can only rotate in one direction.
  • the planetary gear 106 is provided with gear elements, which can be selectively locked as in the preferred embodiment described above by means of one of two terminals 29, 33 having locking means whereby the drive movement can be transmitted either to the tensioning wheel 87 or the rocker 80.
  • the ring gear 107 is released via the locking device, i. the clamp 33 is not in clamping engagement with the ring gear 107.
  • the tensioning wheel 87 can thereby rotate freely without active connection with the motor M.
  • retroacting belt tension is thereby achieved by the tensioning wheel 87 and the tensioning wheel upstream gear 106.
  • the terminal 29 designed as a planet carrier 105 spur gear is locked, whose axis of rotation with the clamping axis 86a, that is, the axis of rotation of the tensioning wheel 87, aligned.
  • the transmitted from the bevel gear 100 to the input side sun gear 110 motor drive movement can not be due to the rotation of the planet carrier 105 due to the means of the terminal 29 made releasable rotational locking of the planet carrier 105 to rotational movements of the planet gears 105b of the planet carrier 105th with these planetary gears 105b into engagement standing internal toothing of the ring gear 109 puts the latter in rotational motion.
  • an outer toothing 109c of the ring gear 109 is in engagement with an external toothing 150c of a circular arc segment 150, which is arranged stationarily on one end of a connecting shaft 151.
  • connection axis 151a of the connection shaft 151 is parallel to the stationary tension axis 86a of this embodiment.
  • the ring gear 109 could also be supported by a cam on a support element, in which case either the cam or the support element neither fixed to the ring gear 109 still formed movable and the other of the two element should be disposed on the ring gear 109.
  • the rotational movement of the ring gear 109 and the engagement of the ring gear 109 in the circular arc segment 150 leads to a rotational movement of the connecting shaft 151st around the connection axis 151a.
  • a arranged at the other end of the connecting shaft 151 spur gear 152 engages in an outer toothing 117c of the planet carrier 117 and thereby transmits the rotational movement about the connecting axis 151 a on the planet carrier 117.
  • the clamping axis 86a is the connecting axis 151a on the one and the Rocker pivot axis 80a on the other side of the clamping axis 86a, wherein the rocker pivot axis 80a is located on the side of the head end of the strapping device.
  • the planet carrier 1 7 belongs to the drive train, which is provided for the drive movement of the tensioning wheel 87.
  • the operative connection of this drive train to the motor M is momentarily interrupted due to the previously described switching position of the blocking device.
  • the planet carrier 17 rotates about the clamping axis 86a and takes with a arranged on its outer peripheral surface cam 117a a driver 80c of the rocker 80 with.
  • the arcuate rocker 80 which is arcuate in plan view, thereby rotates and is opened.
  • the rocker 80 which is mounted rotatably about the rocker axis 80a and approximately has the shape of a curved section, is arranged with its lower free end underneath the tensioning wheel 87, so that the tensioning plate 89 arranged in the region of the free end of the rocker 80 is likewise arranged directly underneath the tensioning wheel 87 can.
  • the clamping plate 89 In order to arrange the clamping plate 89 at a distance from the tensioning wheel 87, the previously described motor-driven movement of the rocker 80 in the direction of rotation according to arrow 112 (FIG. 6) is used, by which the rocker 80 is opened as described and a distance between the tensioning wheel 87 and the Clamping plate 89 is enlarged.
  • the opening movement can be limited by a stop.
  • the motor-open rocker 80 now allows removal of the strained and closed strapping loop from the strapping device. After the finished strapping is removed, the end of a new strapping loop may be inserted between the tension plate and the tensioning wheel for a subsequent tensioning operation.
  • the rocker 80 can by the restoring force of the 2Uvor during the opening movement tensioned spring element 124 back to the Tensioning wheel introduced and press the band against the tensioning wheel with an initial pressing force for the clamping operation.
  • an actuation of a button or other actuating element may be provided by which the spring force is released to act on the rocker. It may also be a release of the key 10.
  • the ring gear 107 is clamped on its outer peripheral surface by means of the clamp 33 against rotational movements.
  • the planet carrier 105 is not clamped, thus can rotate as well as the connecting shaft 8.
  • the sun gear 30 in the arranged on the clamping axis 86a planetary gear 106 motor drive movement is transmitted through the planet carrier 105 and the ring gear 107 through the planet gears 114 of the second planetary carrier 115 and the latter set in rotation.
  • sun gear drives the planetary gears 121 to a downstream further stage of the planetary gear 106. Also, the planet carrier 122 of this stage rotates.
  • the sun gear 123 of the latter stage is passed through the other planet carrier 117 and drives the planetary gears 118 of this further stage, which in turn are in engagement with an internal toothing of the tensioning wheel 87.
  • the tensioning wheel 87 is thus driven via the single or multi-stage planetary gear 106 in the clamping direction and the inserted band B is tensioned.
  • this does not actually carry out a noticeable rotational movement about the rocker axis 80a, but substantially only increases the torque about the rocker axis 80a.
  • the pressing force with which the rocker 80, the clamping plate 89 and the band presses against the tensioning wheel 87 increased. This increase usually does not occur in a single step.
  • the ultimately attributable to the motor drive movement and the already existing belt tension and taking effect in the tensioning gear 106 increasing the pressing force of the rocker against the belt is proportional to each existing in the belt and as resistance to maintenance and against a further increase in the belt tension at the Engagement point in the band, the band acting on the clamping plate 89 and the tensioning wheel 87 resistance or restoring force instead.
  • the clamping process causes an increase in the belt tension, as long as the resistance force and thus the resulting pressure force increases.
  • FIGS. 8 and 9 show the end positions of rocker 80 which are possible on the one hand by the pivoting of the rocker for opening and closing on the one hand and to increase the pressure force on the band on the other hand.
  • the chucking plate 89 becomes clockwise due to contact of the cam 1 17b of the planetary carrier 117 with a contour of the driver 80b and a direction of rotation of the planet carrier (referring to the illustration of FIG ) the rocker is turned counterclockwise about its rocker pivot axis.
  • the driver 80b and the cam 117b act like a lever which causes a counterclockwise torque about the rocker pivot axis 80a.
  • Fig. 9 shows the end position of the open rocker.
  • the planet carrier 117 rotates in the opposite direction of rotation compared with FIG. 8 and thus comes into abutment against the driver 80c of the rocker 80.
  • the driver 80c is located on the other side of the rocker pivot axis 80a with respect to the rocker pivot axis 80a and the other driver 80b , In the position of use of the strapping device with a horizontal orientation of the base plate, there is the driver 80b above and the driver 80c below the rocker pivot axis 80a.
  • the rocker pivots thereby in the illustration of Fig. 9 in a clockwise direction and thereby creates a distance to the tensioning wheel 87.
  • Fig. 9 shows the end position of the open rocker.
  • the planet carrier 117 rotates in the opposite direction of rotation compared with FIG. 8 and thus comes into abutment against the driver 80c of the rocker 80.
  • the driver 80c is located on the other side of the rocker pivot axis
  • FIG. 12 shows a partial perspective view of the clamping device of the second embodiment, in which only one of the two terminals is shown.
  • the clamp 33 is brought into abutment against the flat and in cross-section substantially exactly circular Umf anxstlache 107 b of the ring gear 107.
  • Fig. 13 is a sectional view through the ring gear 107 and the clamp 33 is shown.
  • the terminal 33 of the locking device By means of the terminal 33 of the locking device, the ring gear can be selectively clamped against rotational movements or released again.
  • Each of the provided in the strapping apparatus according to FIG. 2-1 1 clamps may preferably be designed according to the locking device described here, but there are also conventional locking devices possible.
  • an at least approximately circular or circular arc-shaped circumferential surface of the wheel cooperate with a pivotable clamping element or clamping body.
  • the peripheral surface 107b of the illustrated preferred embodiment which acts as a clamping surface, has no latching elements with which a clamping based on a positive engagement of a clamping element in a latching element or a latching recess is provided.
  • the clamping element 33 is pivotally mounted about the switching and pivot axis 143, wherein the switching axis 143 of the clamping element 33 is parallel to the axis of rotation of the wheel 107 to be clamped.
  • the switching axis 143 extends in the region of one end of the cam-shaped clamping element 33.
  • an arcuate contact surface 33a is provided, which is provided for contact with the clamping surface 107b of the wheel to be clamped. Due to the circular shape of the clamping surface 109b and in the side view arched shape of the contact surface 33a comes on contact of the clamping element 33 with the peripheral surface 107b a substantially linear contact, this contact line is perpendicular to the plane of Fig. 13.
  • the clamping member 33 is arranged with respect to the wheel 107 to be clamped such that the contact line of the contact surface 33 a has a distance 155 to its pivot axis 1 3, which is greater than the distance of the pivot axis 143 to the clamping surface 107 b.
  • the contact line is in front of the (imaginary) connecting line 156.
  • the rotation of the wheel 107 is braked and can at most continue to move slightly further. Due to a further rotation against the thereby increasing clamping action, the clamping action further amplifies and amplifies thereby increasing wedging of the clamping element 33 against the wheel 107. Due to these geometric conditions, the clamp 33 can not pass the connecting line 156 in the direction of rotation of the wheel, its pivoting movement stops before the Connecting line 156 and presses against the clamping surface 107b. In an end position which substantially already corresponds to the position of the first contact with the clamping element 33, the wheel 107 is clamped against the cam-shaped clamping element 33. A further movement is no longer possible even with an arbitrarily high torque.
  • Fig. 14 the geometric relationships are shown in the clamping.
  • the connection line between the rotation axis 86a of the wheel 107 and the pivot axis 143 is designated 156.
  • the contact surface (circumference) of the wheel could be smooth or slightly textured.
  • the radius of the wheel at the point of contact with the cam is designated 158 and the pivot radius of the clamping element 33 at the point of contact 155.
  • the pivoting radius 155 at the contact point encloses an angle ⁇ with the connecting line 156, the radius 158 of the wheel 107 with the pivoting radius 155 (in each case at the contact point) an angle ⁇ .
  • the geometric relationships are designed such that in the clamping position in which the wheel 07 is blocked against rotational movements in the intended direction of rotation, the angle ⁇ is at least approximately 155 °.
  • the angle ⁇ should advantageously be greater than or equal to 7 °. In the exemplary embodiment, it is 9 °. In other embodiments, it may be ⁇ also selected from a range of 7 ° to 40 wt. In the preferred embodiments of the invention discussed herein, unless the wedge effect is sufficiently strong, it is not absolutely necessary for the position of the cam to be held in its clamping position by a measure taken externally.
  • the cam-shaped clamping element is held in position by the spring force of a spring element 159.
  • the spring element 159 bears against the clamping element above the switching axis 143 and rotates or holds the clamping element 29 in its clamping position.
  • the spring force has to be overcome with a switch 160. With the switch 160 both terminals 29 and 33 can be operated simultaneously.
  • the switch / button can be overcome by pulling or pressing the switch, the spring force and the ring gear 107 released from the terminal 33 and the planet carrier 105 are locked. In the respective other movement of the switch / button, the terminal 29 and the planet carrier 105 is released again via the spring force, while the clamp 33 blocks the ring gear 107.
  • Ring gear 151 Connecting shaft B Peripheral surface 151a Connecting axle c External toothing 155 Distance / swiveling radius Sun gear 156 Connecting line arrow 157 Direction of rotation

Landscapes

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

Abstract

L'invention concerne un dispositif de banderolage, destiné au banderolage de marchandises à emballer au moyen d'une banderolle, comprenant un système de tension, pour l'application d'une tension de bande sur une boucle formée par une bande de cerclage, le système de tension étant doté d'une roue de tension qui peut être entraînée en rotation par moteur autour d'un axe de tension, le système de tension présentant en outre une plaque de tension qui coopère avec la roue de tension, la roue de tension et/ou la plaque de tension étant en outre disposées sur une bascule entraînée en pivotement par moteur autour d'un axe de bascule, afin d'augmenter ou de réduire l'espacement entre la roue de tension et la plaque de tension, par un mouvement de pivotement de la bascule. L'invention vise à appliquer les tensions de bande prévues de manière sûre et le plus possible sans glissement sur la bande. A cet effet, pendant la transmission du mouvement d'entraînement par moteur à la roue de tension par au moins un moyen de transmission du dispositif de banderolage, un mouvement d'entraînement est transmis à la bascule, pivotant au moins temporairement pendant la durée du processus de tension, le mouvement d'entraînement étant prévu pour exercer un couple sur la bascule.
EP13805503.3A 2012-09-24 2013-09-24 Dispositif de banderolage présentant une bascule pivotante Active EP2897866B1 (fr)

Applications Claiming Priority (3)

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CH17242012 2012-09-24
CH17232012 2012-09-24
PCT/IB2013/002116 WO2014167377A1 (fr) 2012-09-24 2013-09-24 Dispositif de banderolage présentant une bascule pivotante

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EP2897866A1 true EP2897866A1 (fr) 2015-07-29
EP2897866B1 EP2897866B1 (fr) 2021-08-04

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EP13821914.2A Active EP2897867B1 (fr) 2012-09-24 2013-09-24 Dispositif de banderolage

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US (8) US9938029B2 (fr)
EP (2) EP2897866B1 (fr)
JP (2) JP6412003B2 (fr)
CN (2) CN105324310B (fr)
CH (2) CH707027A2 (fr)
ES (2) ES2752195T3 (fr)
WO (2) WO2014072775A1 (fr)

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US10370132B2 (en) 2019-08-06
CN104870315A (zh) 2015-08-26
US11560245B2 (en) 2023-01-24
US20150210411A1 (en) 2015-07-30
EP2897866B1 (fr) 2021-08-04
US20230264842A1 (en) 2023-08-24
WO2014167377A1 (fr) 2014-10-16
CN105324310B (zh) 2018-03-27
US20240199253A1 (en) 2024-06-20
JP2015529178A (ja) 2015-10-05
JP6412003B2 (ja) 2018-10-24
US11667417B2 (en) 2023-06-06
CH707028A2 (de) 2014-03-31
CH707027A2 (en) 2014-03-31
US20190300214A1 (en) 2019-10-03
US9932135B2 (en) 2018-04-03
EP2897867B1 (fr) 2019-07-31
WO2014072775A8 (fr) 2015-05-07
US20220185517A1 (en) 2022-06-16
US20180194497A1 (en) 2018-07-12
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JP6329151B2 (ja) 2018-05-23
ES2752195T3 (es) 2020-04-03
WO2014072775A1 (fr) 2014-05-15
EP2897867A1 (fr) 2015-07-29
US20230145839A1 (en) 2023-05-11
US9938029B2 (en) 2018-04-10
US11267596B2 (en) 2022-03-08
CN105324310A (zh) 2016-02-10
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US20150246739A1 (en) 2015-09-03

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