EP2897867A1 - Dispositif de banderolage - Google Patents

Dispositif de banderolage

Info

Publication number
EP2897867A1
EP2897867A1 EP13821914.2A EP13821914A EP2897867A1 EP 2897867 A1 EP2897867 A1 EP 2897867A1 EP 13821914 A EP13821914 A EP 13821914A EP 2897867 A1 EP2897867 A1 EP 2897867A1
Authority
EP
European Patent Office
Prior art keywords
strapping
tensioning
rocker
clamping
tensioning wheel
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
EP13821914.2A
Other languages
German (de)
English (en)
Other versions
EP2897867B1 (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 EP2897867A1 publication Critical patent/EP2897867A1/fr
Application granted granted Critical
Publication of EP2897867B1 publication Critical patent/EP2897867B1/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, preferably a mobile strapping device, for strapping packaged goods with a strapping band, which has a tensioning device for applying a belt tension to a loop of a strapping band, wherein the tensioning device is provided with a tensioning wheel that can be driven by a motor axis in a rotational manner Is provided in the strapping band, the clamping device further comprises a clamping plate, wherein during a clamping operation performed by the clamping device is provided that a portion of the strap between the tensioning wheel and the clamping plate and is both with the tensioning wheel and the clamping plate in contact , Further, the tensioning wheel or the clamping plate is arranged on a rocker arm rotatable about a rocker axis to a motor to pivot by a pivoting movement of the rocker, a distance between the tensioning wheel and the clamping plate either increase or decrease ,
  • the strapping device furthermore has a connecting device, such as a welding device, for producing a connection, in
  • Such mobile 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 here 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-layer 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 (or other connection technique) on 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.
  • 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.
  • the invention is therefore an object of the invention to provide a generic strapping device of the type mentioned, despite the possibility of at least largely automated and fast production of tape strapping high reliability and good Has handling properties. In particular, the task is not directed exclusively to mobile strapping devices.
  • the solution according to the invention only one motor is required so that both the clamping operation of the belt by the tensioning wheel and the lifting of the rocker of the tensioning device can be effected by a respective motor movement.
  • the same only one direction of rotation of the motor which is preferably designed as an electric motor, can be used here.
  • the invention thus enables an extension of the executable with only one engine functions whose benefits come in a mobile portable strapping to bear in particular mass. Since in embodiments of the invention, the pivoting or lifting of the rocker is no longer manual but motor, can be omitted in appropriate embodiments of the invention, the previously always necessary for movement of the rocker of the tensioning wheel hand-operated lever and the transmission mechanism from the lever to the tensioning wheel.
  • the invention thus not only enables a higher level of automation in strapping devices, it also enables a reduction in the weight of such mobile strapping devices despite the higher level of automation.
  • an at least substantially completely automated strapping process is also made possible, in which the welding device and its delivery or transfer to the band as well as the severing of the band to separate a closed belt loop from the supply of the tape, with the Driving movements of only a single motor of the strapping device is made.
  • Strapping devices in which with only one motor, both the clamping operation, as well as the transfer of the welding device in the welding position, also a drive of the welding shoe and a drive of the cutting blade is made known from WO 2009/129633 A1.
  • WO 2009/129633 A1 is hereby incorporated by reference to the said solution and its contents are incorporated by reference.
  • An expedient embodiment of the invention can provide that in a transmission, in particular in a transmission of the tensioning device, alternately either an operative connection of the motor to the tensioning wheel or an operative connection of the motor to the rocker can be generated.
  • the operative connection of the electric motor should be made by either at least one switching operation either with the rocker or with the tensioning wheel and thus only one of both functions are performed. Since switching operations are particularly simple, i. can be implemented with little design effort, such a solution can be purely mechanical and still designed to be weight-saving and reliable.
  • the at least one switching operation can take place in a preferred embodiment by two clamping devices of a locking device, which can be brought alternately into blocking engagement with at least one gear member of a transmission of the clamping device to the motor drive movement with identical direction of rotation provided by the engine by the blockage of the respective gear member Drive movement to transfer the latter on the tensioning wheel or in the form of a lifting or lowering movement on the rocker.
  • a transmission of the clamping device may be provided in particular a single or multi-stage planetary gear.
  • the clamping devices thus act in such embodiments of the invention thus advantageously on two gear members of the planetary gear.
  • a structurally particularly inexpensive solution for generating the pivoting movement can provide that a gear member of the planetary gearbox, which is locked against rotational movements and preferably also transmits the drive movement of the motor to the tensioning wheel, is provided for supporting a gear element rotatable about the rocker axis.
  • the planetary gear can thus both for the drive movement the tensioning wheel as well as for the drive movement of the rocker be used.
  • the motor drive movement of only one motor except for the drive of the tensioning wheel when tensioning the strapping and for lifting the rocker for a band voltage-dependent variable pressing or pressing the tensioning wheel and / or the rocker be provided on the exciting band.
  • the tape tension dependent pressing and thus the band voltage dependent increase in the pressing force of the clamping device against the tape may also have independent significance.
  • 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 risk of slippage can be counteracted by the measure of an increasing contact pressure.
  • the motor drive movement during tensioning of the belt can preferably be used in such a way that an opposing force acting on the tensioning wheel by the strapping belt is used during the tensioning process of the strapping belt by means of the tensioning belt engaging in the strapping belt and rotating against a belt tension in order to increase the contact pressure of the tensioning wheel in the direction To increase the clamping plate or the contact pressure of the clamping plate in the direction of the tensioning wheel.
  • 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 the 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 to the tensioning wheel, so that the band can be tensioned.
  • FIG. 1 shows a strapping device according to the invention in a perspective view
  • FIG. 2 is an exploded view of the tensioning device of the strapping device of FIG. 1 together with the motor;
  • Fig. 3 is a perspective view of the clamping and the
  • Fig. 4 is a further perspective view of the clamping and the
  • Fig. 5 is an exploded view of another embodiment of the
  • Fig. 6 is a perspective view of the clamping and the
  • Fig. 7 is a further perspective view of the clamping and the
  • Fig. 8 is a side view of the clamping device of FIG. 5, in which a
  • FIG. 9 is a side view of the clamping device of FIG. 5, in which the
  • FIG. 10 is a side view of the clamping device of FIG. 2, in which the
  • Rocker is in a position with high pressure against a clamping plate
  • FIG. 11 is a side view of the clamping device of FIG. 2, in which the
  • Fig. 12 is a partial perspective view of the clamping and the
  • Fig. 13 is a sectional view of the clamping and locking device
  • Fig. 14 is a schematic representation of the geometric relationships of a preferred locking device.
  • the exclusively manually operated strapping device 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 strapping apparatus 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 clamping wheel 7, which is arranged with its axis of rotation at a distance from the rocker pivot axis 8a, can be transferred from an end position spaced from a final position with a spacing, preferably curved, to a second end position by pivoting the rocker 8 about the rocker pivot axis 8a the tensioning wheel 7 is pressed against the clamping plate 9.
  • the tensioning wheel 7 can be removed from the clamping plate 9 and pivoted back to its original position, whereby the belt located between the tensioning wheel 7 and the clamping plate 9 is released for removal.
  • a clamping device In use of the illustrated embodiment of a clamping device are two layers of Umreifungsbands between the tensioning wheel 7 and the clamping plate and are pressed by the tensioning wheel 7 against the clamping plate. By rotation of the tensioning wheel 7, it is then possible to provide the belt loop with a sufficiently high for the packaging purpose tape tension.
  • the process of clamping and this purpose designed advantageously clamping device and rocker 8 will be explained in more detail below.
  • a welding of the two layers by means of the friction-welding device 12 of the strapping device can take place at one point of the band loop on which two layers of the band lie one above the other.
  • the strap loop can thereby be permanently closed.
  • the Reibschweiss- and separator 12 is driven by the same only one motor M of the strapping, with all other motor-driven movements are performed.
  • 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 here by mechanical pressure on the strapping ungsband depressed 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 delivery of the tensioning wheel 7 in the direction of the clamping plate 9, the rotary drive of the tensioning wheel 7 about the clamping axis 6a, the lifting of the tensioning wheel from the clamping plate, the delivery of the friction-welding device 12 by means of the transfer device 14 of the friction-welding device 12 as well as the use of the friction-welding device 12 in itself and the operation of the cutting device are carried out using only a single electric motor M, which provides a drive movement for these components of the strapping device.
  • an exchangeable accumulator 15 which can be removed in particular for charging, is arranged on the strapping apparatus and serves to store electrical energy.
  • the supply of other external auxiliary energy, such as compressed air or other electricity may be provided, but does not occur in the strapping apparatus according to FIGS. 1 and 2.
  • the strapping apparatus is provided, 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 tap.
  • the motor M can be operated in each of the two directions of rotation.
  • the change of the transmission of the drive movement 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.
  • 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 moves both the transfer device 14 and the welding shoe 13 of the friction-welding device 12.
  • 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, for which purpose 8 suitable bearings can be provided on the rocker ,
  • 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 embodiment, 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 disposed behind the ring gear 27 on the axis of the planetary gear 26, which corresponds to the clamping axis 6a.
  • 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 circumference on a cam 27 c, which is in engagement with a fortified on the base plate 4 of the strapping device 46.
  • the internally toothed ring gear 27 is supported here in such a way that the cam 27c carry out slight relative movements within its engagement in the support 46, for example in a recess 46a of the support can.
  • 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 respective other wheel 25, 32 is free for rotational movements. It is thus possible, depending on the positions of the locking devices 29, 33, that a rotational movement of the gear 23 and the sun gear 30 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 32nd leads. 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.
  • the rotating sun gear takes the planet gears 25b so that the planet carrier 25 rotates and the ring gear 27th remains stationary. If, however, the ring gear 32 is not clamped, a rotation of the sun gear 30 leads to entrainment of the planet wheels 34, which in turn offset the ring gear 32 in a rotational movement. Since the resistance to rotation in the further course of the planetary gear 26 to the tensioning wheel 7 is greater than the torque to be overcome to enable the ring gear 32 in rotation, rotates in this case, especially the ring gear 32 and the tensioning wheel 7 rotates at least substantially Not.
  • end face of the planetary carrier 35 is non-rotatably arranged on this another sun gear 36 which meshes with planet wheels 41 of another planetary carrier 42.
  • a directed to the tensioning wheel 7 further and rotatably connected to the planet carrier 42 sun gear 43 is performed by a recess formed as a ring gear further planetary carrier 37.
  • the sun gear 43 is in meshing engagement with the planetary gears 38 of the further planet carrier 37 facing the tensioning wheel 7.
  • the planetary gears 38 of the second planetary carrier 37 in turn mesh with an internal toothing of the tensioning wheel 7 and drive the latter to rotate about the tensioning axis 6a.
  • This rotational movement of the tensioning wheel 7 (not shown) provided on its outer peripheral surface with a fine toothing is used to gripping the tape B with the enveloping tape and retracting the tape from the tape loop, thereby increasing a tape tension in the tape loop.
  • 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 stop element 39 itself is not fixed to the rocker but to the base plate 4 or other support, which does not participate with the rocker 8 in its pivoting movement. The stop element 39 is thus stationary with respect to the paragraph 37 a.
  • the strapping device 1 When used in the strapping of packaged goods, the strapping device 1 behaves as follows: After the respective packaged goods a belt loop is laid with a commercially available plastic strapping, this is inserted in the Bandumreifungs réelle in the band end, in which the belt loop is partially double-layered, in The end of the tape is held in the strapping device with a strap clamp (not shown). 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. Subsequently, 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 this transfer movement of the tensioning wheel and the height of the force exerted by the tensioning wheel on the belt at the beginning of the tensioning operation 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”, “shutter production”, “cutting”, releasing the tension from the band in the area of the clamping device, and “raising the rocker” are triggered, including preferably no further intervention by the operator of the strapping device must be made.
  • the tensioning wheel 7 automatically from the open position to its clamping position (see clamping position in Fig. 10 and open position in Fig. 1) in which it rests on the belt B and presses over the belt on the clamping plate 9, the motor Drive movement transmitted to the tensioning wheel 7.
  • the second clamp 33 is transferred to its position in which it presses against the ring gear 32.
  • the ring gear 32 is thereby locked against rotation and locked.
  • 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.
  • 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 about the rocker axis 8a is pressed onto the belt 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
  • the planetary carrier is for this purpose formed with the engagement element 37a which cooperates with the stationary stop element 39.
  • the cam element which is arranged on the outer circumference of the planet carrier and protrudes substantially radially from this, is supported on the stop element 39 3, the fixed stop element 39 is located in the region of the head end of the strapping apparatus in this case tally parallel to her rocker pivot axis 8a on the other side of the clamping axis 6a.
  • the rocker 8, on which the planet carrier 37 is rotatably arranged about a roller bearing about the clamping axis 6a, is also at least during the clamping operation pivotally, that is 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.
  • This torque which is produced as a reaction, is in turn proportional to the resultant pressing force acting on the band B by the tensioning wheel 7, with which the band B is pressed by the tensioning wheel 7 against the tensioning plate 9.
  • a rising from the motor drive movement on the tensioning wheel 7 belt tension is therefore associated in the invention with an increasing pressing force of the tensioning device on the band.
  • 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 M and the tensioning wheel 7 is first of all solved and an operative connection between the electric motor M and the rocker 8 is created. This is achieved by switching the terminals 29, 33.
  • the previously existing clamping of the ring gear 32 is canceled by the second clamp 33 is removed from the outer surface 32 a of the ring gear 32 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 driven and has no operative connection to the electric motor M and the sun gear 30 more, the one could transmit drive movement.
  • a drive movement of the electric motor M 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.
  • the spring element 44 For subsequent lowering of the rocker 8 after introduction of a new section of the strapping B in the strapping device 1, the spring element 44 must be released again, which can be done for example via an operable button on the strapping device.
  • the previously actuated key 10 is released for this purpose.
  • 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. Also, the basic structure of this Embodiment of the strapping apparatus may correspond to that of the previously discussed preferred embodiment of the invention. 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 optional drive of either the welding device and separator on the one hand or the tensioning device 6 on the other hand via a freewheel and different directions of rotation of the motor M.
  • the embodiment has a pivotable rocker 80 of the tensioning device 86 that is motor-driven about a rocker pivot axis 80a.
  • 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 freewheel 125 arranged on the shaft of an input-side sun gear 110 it is ensured that the input side of the planetary gear 106 can rotate only in one direction of rotation.
  • 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, ie 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 151 about the connecting axis 151 a.
  • 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 151a on the planet carrier 117.
  • the clamping axis 86a is the connection axis 15 a 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 117 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 motor M there is no operative connection of the motor M with the tensioning wheel 87 at the method time described above, in order to drive the latter.
  • the planetary carrier 117 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 be brought back by the restoring force of the previously tensioned during the opening movement of the spring element 124 to the tensioning wheel and press the band against the tensioning wheel with a pressing force initially 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.
  • 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 1 5 and the latter set in rotation.
  • sun gear drives the planetary gears 121 to a downstream further stage of the planetary gear 106.
  • 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.
  • the planetary carrier 117 is supported on the rocker 80 by a cam 117b, which has the function of a stop, which is supported by the motor drive movement in a suitable direction of rotation rotating planet carrier 117 rests with its cam 117b against a driver 80b of the rocker and thereby rotates them in a movement according to arrow 113 (FIG.
  • 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 chuck plate 89 becomes clockwise due to contact of the cam 117b of the planet carrier 17 with a contour of the dog 80b and a direction of rotation of the planetary carrier (referring to the illustration of FIG. 8).
  • the driver 80b and the cam 1 7b 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 ,
  • the driver 80b is located above and the driver 80c below the rocker pivot axis 80a.
  • the rocker pivots thereby in the illustration of FIG. 9 in the clockwise direction, thereby creating a distance to the tensioning wheel 87th
  • 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 plane and in cross-section substantially exactly circular peripheral surface 107b of the ring gear 107.
  • Fig. 13 is a Sectional view through the ring gear 107 and the clamp 33 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 clamps provided in the strapping devices according to FIGS. 2-11 may preferably be designed according to the locking device described here, but conventional locking devices are also 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 143, which is greater than the distance of the pivot axis 143 to the clamping surface 107 b.
  • the clamping element 33 in the case of a pivoting movement of the clamping element 33 from its release position into a clamping position, it already comes into contact with the clamping surface 107b in front of a connecting straight 156 of the axis of rotation of the wheel 107 with the pivot axis 143 of the clamping element.
  • With respect to the intended direction of rotation 157 of the jammed wheel 107 is the contact line in front of the (imaginary) connecting line 156.
  • the rotation of the wheel 107 is braked and can move at most slightly further. Due to a further rotation against the thereby increasing clamping action, the clamping effect further amplifies and amplifies an increasing wedging of the clamping element 33 against the wheel 107. Due to these geometric conditions, the clamp 33 can not pass in the direction of rotation of the wheel connecting line 156, their pivotal movement stops before 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 connecting line between the rotation axis 86a of the wheel 107 and the pivot axis 143 is denoted by 156.
  • the contact surface (circumference) of the wheel could be giatt or slightly structured.
  • 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 such that in the clamping position in which the wheel 107 is blocked against rotational movements in the intended direction of rotation, the angle ⁇ is at least approximately 155 °. Good results could also be achieved in experiments if an angle from a range of 130 ° to 170 °, in particular from 148 ° to 163 °, is established.
  • the angle ⁇ should advantageously be greater than or equal to 7 °. In the exemplary embodiment, it is 9 °. In other embodiments, it may also be selected from a range of 7 ° to 40 °.
  • 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. In order to remove the clamping element from its clamping position, the spring force has to be overcome with a 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.
  • the terminal 29 and the planet carrier 105 is released again via the spring force, while the clamp 33 blocks the ring gear 107.

Abstract

La présente invention concerne un dispositif de banderolage, notamment un dispositif de banderolage mobile, destiné au banderolage de marchandises à emballer avec une banderole, le dispositif comprenant un système de tension destiné à appliquer une tension de bande sur une boucle formée par une banderole, 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 également une plaque de tension qui coopère avec la roue de tension, la roue de tension et/ou la plaque de tension étant disposée(s) 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 a pour objet de conférer à un tel dispositif de banderolage une sécurité de fonctionnement élevée. A cet effet, un seul moteur est prévu pour assurer les mouvements d'entraînement dans des sens de rotation identiques aussi bien pour faire tourner la roue de tension pour réaliser la mise en tension de la banderole, que pour faire pivoter de manière motorisée la bascule autour de l'axe de bascule de sorte que ce mouvement de pivotement permet de faire varier, notamment d'augmenter la distance entere la roue de tension et la plaque de tension.
EP13821914.2A 2012-09-24 2013-09-24 Dispositif de banderolage Active EP2897867B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH17232012 2012-09-24
CH17242012 2012-09-24
PCT/IB2013/002132 WO2014072775A1 (fr) 2012-09-24 2013-09-24 Dispositif de banderolage

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EP2897867A1 true EP2897867A1 (fr) 2015-07-29
EP2897867B1 EP2897867B1 (fr) 2019-07-31

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EP13805503.3A Active EP2897866B1 (fr) 2012-09-24 2013-09-24 Dispositif de banderolage présentant une bascule pivotante
EP13821914.2A Active EP2897867B1 (fr) 2012-09-24 2013-09-24 Dispositif de banderolage

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US (7) US9932135B2 (fr)
EP (2) EP2897866B1 (fr)
JP (2) JP6412003B2 (fr)
CN (2) CN104870315B (fr)
CH (2) CH707028A2 (fr)
ES (2) ES2752195T3 (fr)
WO (2) WO2014072775A1 (fr)

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JP2015529178A (ja) 2015-10-05
EP2897867B1 (fr) 2019-07-31
CN105324310A (zh) 2016-02-10
CH707027A2 (en) 2014-03-31
US20150210411A1 (en) 2015-07-30
CN104870315A (zh) 2015-08-26
JP6329151B2 (ja) 2018-05-23
CN104870315B (zh) 2017-10-10
WO2014072775A8 (fr) 2015-05-07
US20180194497A1 (en) 2018-07-12
US20230264842A1 (en) 2023-08-24
US11267596B2 (en) 2022-03-08
US20150246739A1 (en) 2015-09-03
JP2015529179A (ja) 2015-10-05
JP6412003B2 (ja) 2018-10-24
US11560245B2 (en) 2023-01-24
CH707028A2 (de) 2014-03-31
ES2752195T3 (es) 2020-04-03
US11932430B2 (en) 2024-03-19
ES2895662T3 (es) 2022-02-22
US9932135B2 (en) 2018-04-03
WO2014167377A1 (fr) 2014-10-16
US20230145839A1 (en) 2023-05-11
WO2014072775A1 (fr) 2014-05-15
US10370132B2 (en) 2019-08-06
EP2897866B1 (fr) 2021-08-04
US11667417B2 (en) 2023-06-06
US20220185517A1 (en) 2022-06-16
US20190300214A1 (en) 2019-10-03
EP2897866A1 (fr) 2015-07-29
CN105324310B (zh) 2018-03-27
US9938029B2 (en) 2018-04-10

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