EP2280875B1 - Dispositif de banderolage comportant un systeme d'entrainement - Google Patents

Dispositif de banderolage comportant un systeme d'entrainement Download PDF

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Publication number
EP2280875B1
EP2280875B1 EP09734179A EP09734179A EP2280875B1 EP 2280875 B1 EP2280875 B1 EP 2280875B1 EP 09734179 A EP09734179 A EP 09734179A EP 09734179 A EP09734179 A EP 09734179A EP 2280875 B1 EP2280875 B1 EP 2280875B1
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EP
European Patent Office
Prior art keywords
friction
welding
strapping
drive
strapping apparatus
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.)
Active
Application number
EP09734179A
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German (de)
English (en)
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EP2280875A1 (fr
Inventor
Mirco Neeser
Roland Widmer
Flavio Finzo
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Signode Switzerland GmbH
Original Assignee
Orgapack GmbH
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Application filed by Orgapack GmbH filed Critical Orgapack GmbH
Priority to PL09734179T priority Critical patent/PL2280875T3/pl
Publication of EP2280875A1 publication Critical patent/EP2280875A1/fr
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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
    • B65B13/24—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
    • 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
    • B65B13/187—Motor means

Definitions

  • the invention relates to a mobile strapping device for strapping packaged goods with a strapping band, which comprises a tensioning device for applying a belt tension to a loop of a strapping belt, and a friction welding device for generating a Reibschweissthetic on two superimposed areas of the loop of the strapping, and a rechargeable energy storage for storage of electrical energy which is releasable as drive energy at least for the friction-welding device for generating a friction-welded connection.
  • Such mobile strapping device are used for strapping of packaged goods with a plastic tape.
  • 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-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 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-containing band 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, 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 tools for tensioning a strapping band around any packaged goods and for Closure generation is provided in prior art strapping devices usually by an electric accumulator or by compressed air available.
  • Generic mobile strapping devices are often used in industry for the packaging of goods in continuous use. It is therefore desirable as simple as possible operation of the strapping devices. In this way, on the one hand, a high level of functional reliability of the strapping device and, on the other hand, the lowest possible loads for the servants should be ensured.
  • a mobile strapping apparatus which is provided with a tensioning device for applying a tension on the strapping band and with a welding device.
  • the welding device is designed as a friction welding device in which an oscillating movement of a welding shoe on the strap laterally melts the latter and welds the belt layers of the strap together. To achieve such melting, certain frequencies and speeds of the oscillating movement of the welding shoe are required. This will be at the EP 1 413 519 A provided by means of an electric motor, the movement of which is transmitted to a transmission which converts the motor drive movement into an oscillating movement.
  • the EP 0 997 377 A describes a mobile strapping apparatus in which an electric motor is the starting point for the oscillating movement of a welding shoe.
  • the rotary drive movement of the electric motor is transformed via an eccentric and a lever mechanism into an oscillating movement of the welding shoe.
  • the EP 0 997 377 also describes a use of a planetary gear as a transmission for a tensioning drive, in which the tensioning wheel is driven continuously in one direction of rotation.
  • the invention is therefore an object of the invention to provide a generic mobile strapping device of the type mentioned, which despite the possibility of at least largely automated generation of tape strapping has a high reliability and good handling properties.
  • the strapping device has at least one planetary gear, which is located in the drive train of the friction welding device. It has been found that planetary gear in combination with an electric drive motor bring particular advantages in Reibschweiss wornen with it. Thus, high torques can be delivered with planetary gearboxes despite high input speeds and a compact design.
  • This can be used with advantage in particular also for particularly functionally reliable, automated as possible transfer movement of the friction-welding device from a rest position to a welding position in which the friction-welding device abuts against the band to be welded and generates a friction-welded closure by means of oscillating motion.
  • This can be particularly advantageous if - as is the case with particularly advantageous embodiments according to the invention - both the actual friction-welding movement of a friction-welding element and the transfer movement are generated with the same drive.
  • Such an embodiment with only one drive for these functions is despite a high degree of automation particularly compact and functionally reliable with favorable weight distribution.
  • the strapping device is provided with a brushless DC motor.
  • This motor can be provided in particular as the only motor in the strapping device.
  • a motor can deliver rotational motion with a substantially constant and relatively high torque over a wide range of speeds.
  • Such a high torque is particularly advantageous for motor-driven transfer movements of the friction-welding device from a rest position to a welding position and possibly back. If high torques can be provided with the strapping device, then it is possible to make the initiation of the transfer movements dependent on overcoming high forces. This increases the safety, in particular the functional safety, since the Friction welding device can not be moved unintentionally due to external influences from their respective intended position.
  • a speed-dependent or speed-controlled tensioning operation also enables a quick first tensioning, i. a tensioning at a high belt retraction speed, followed by a second tensioning operation with reduced belt retraction speed compared to the first tensioning operation.
  • the belt retracting speeds can be adjusted in particular in such brushless motors due to the ability to adjust the speed of the motor shaft and the motor torque in certain areas independently, adjust the required or desired conditions in both clamping operations.
  • the strapping device is provided with means by which rotational positions of the motor shaft or positions of components of the strapping device dependent on the motor shaft can be determined.
  • the Information about one or more rotational positions may preferably be used by a control of the strapping device to control components of the strapping device, such as the friction-welding device and / or the tensioning device. If a brushless DC motor is used as the drive, this can be done in a particularly simple manner. Such motors must already for their commutation information about current positions of the rotating component of the engine, which is usually designed as a rotating armature determine.
  • detectors or sensors such as Hall sensors provided on the engine, the rotational positions of the rotating motor component, for example, the motor shaft or position of the motor shaft dependent position of an arranged in the drive train of the welding device element, determine and provide the engine control available.
  • This information can be used with advantage also in particular for controlling the friction-welding device.
  • the means or detectors for determining the rotational position may also be part of a circuit for controlling an electronically generated commutation of the electric drive.
  • the strapping device can be provided that a number of revolutions of the rotating component of the engine is determined to make a switching operation when a predetermined value for the revolutions.
  • This switching operation may in particular be a switching off of the friction-welding device to end the generation of a friction-welded connection.
  • the engine can not be turned off at one or more specific rotational positions or can only be parked at one or more specific rotational positions.
  • a device which has a knee lever device.
  • the lever of the toggle device connected to one another via a joint can be brought into its two end positions by overcoming two dead center positions, in which they hold the welding device in the rest position or in the welding position.
  • the toggle device is at least in the two end positions held by a respective force, preferably by a force emitted by a mechanical spring force.
  • the toggle device should only be able to get from one end position to the other by overcoming this force.
  • the toggle device Since this applies in particular to the welding position, the toggle device contributes to further increasing the functional reliability of the strapping device. Furthermore, the toggle device advantageously complements the drive train of the strapping device having a brushless DC motor and a planetary gear drive in an embodiment of the invention, in order to automatically transfer the welding device into its welding position, since all the components are capable of generating high torques respectively Only execute movements when high torque is present.
  • exclusively hand-operated inventive 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.
  • the clamping device has for this purpose a tensioning wheel 7, with which the band can be detected for a clamping operation.
  • the tensioning wheel 7 acts together with a rocker 8, which can be pivoted by means of a rocker arm 9 from an end position with distance to the tensioning wheel in eirte second end position about a rocker pivot axis 8a, in which the rocker 8 is pressed against the tensioning wheel 7.
  • a welding of the two layers by means of the friction-welding device 8 of the strapping device can take place at one point of the belt loop on which two layers of the belt lie one above the other.
  • the strap loop can thereby be permanently closed.
  • the friction-welding device 10 is provided with a welding shoe 11, which melts the two layers of the strapping band by mechanical pressure on the strapping band and a simultaneous oscillating movement with a predetermined frequency.
  • the plasticized or molten areas flow into each other and after cooling of the band 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 actuation of the tensioning device 6, the delivery of the friction-welding device 10 by means of a transfer device 19 (FIG. Fig. 6 ) of the friction-welding device 10 as well as the use of the friction-welding device per se and the operation of the cutting device are carried out using only a common electric motor 14, which provides a drive movement for each of these components.
  • a supply of other external auxiliary energy, such as compressed air or other electricity, is in the strapping apparatus according to the Fig. 1 and 2 not provided.
  • the portable mobile strapping device 1 has a trained as a pressure switch actuator 16, which is provided for commissioning of the motor.
  • actuating element 16 17 three modes can be adjusted by means of a switch. In the first mode, both the tensioning device 6 and the friction-welding device 10 are actuated successively and automatically by actuation of the actuating element 16 without the need for further operator activity.
  • the switch 17 is switched to a second switching mode. In the second possible mode, only the tensioning device 6 is then released by actuating the actuating element 16.
  • a second actuating element 18 must be actuated by the operator.
  • the first actuating element 16 is to be actuated a second time.
  • the third mode is a kind of semiautomatic, in which the tension button 16 is to be pressed until the prestressed tension or tensile stress in the belt is reached. In this mode, it is possible to interrupt the clamping process by releasing the tensioning button 16, for example, to attach edge protectors to the Umreifungsgut under the strapping. By pressing the tension button, the clamping process can then be resumed.
  • This third mode can be combined with a separately triggered as well as with an automatically subsequent friction welding process.
  • a transmission device 13 is arranged on a in Fig. 3 shown motor shaft 27 designed as a brushless, grooved female rotor DC motor 14, a transmission device 13 is arranged.
  • a motor of the company. Maxon Motor AG, Brünigstrasse 20, 6072 Sachseln, type ECI40 is used.
  • the brushless DC motor 14 can be operated in both directions of rotation, with one direction of rotation being used as the drive movement of the clamping device 6 and the other direction of rotation being used as the drive movement of the welding device 10.
  • the in Fig. 4 brushless DC motor 14 shown purely schematically is formed with a grooved internal rotor (rotor) 20 with three Hall sensors HS1, HS2, HS3.
  • This EC motor (electronically commutated motor) has a permanent magnet in its rotor 20 and is provided with an electronic control 22 which is provided for electronic commutation in the stator 24.
  • the electronic controller 22 determines via the Hall sensors HS1, HS2, HS3, which also assume the function of position sensors in the exemplary embodiment, the respective instantaneous position of the rotor 20 and switches the electric magnetic field in the windings of the stator 24.
  • the phases Phase 1, Phase 2, Phase 3
  • a so-called “1 quadrant motor drive amplifier” which provides the motor with the voltage, as well as peak and continuous current available and controls.
  • the current flow for not shown coil strands of the stator 24 is controlled by a bridge circuit 25 (MOSFET transistors), ie commutated.
  • a not further shown temperature sensor is provided on the engine. It is thus possible to monitor and control the direction of rotation, the speed of rotation, the current limit and the temperature.
  • the commutation is constructed as a separate print component and accommodated in the strapping device separately from the motor. The power supply is ensured by the trained as a lithium-ion battery accumulator 15.
  • Such rechargeable batteries are based on a number of independent lithium-ion cells, in each of which at least substantially independently chemical processes for generating a potential difference between two poles of the respective cell take place.
  • the battery of the embodiment is a lithium-ion battery manufacturer Robert Bosch GmbH, D-70745 Leinfelden-Echterdingen.
  • the battery of the embodiment has eight cells and has a capacity of 2.6 ampere hours.
  • As an active material or as a negative electrode of the lithium ion battery graphite is provided.
  • the positive electrode of the accumulator often has lithium metal oxides, in particular in the form of layer structures.
  • the electrolyte used is usually anhydrous salts, such as lithium hexafluorophosphate or polymers.
  • the one by one conventional lithium-ion battery discharged voltage is usually 3.6 volts.
  • the energy density of such accumulators is about 100 Wh / kg -120 Wh / kg.
  • the transmission device 13 has a freewheel 36 arranged on the motor-side drive shaft, on which a sun gear 35 of a first planetary gear stage is arranged.
  • the freewheel 36 is only in one of the two possible directions of rotation of the drive, the rotational movement of the sun gear 35 on.
  • the sun gear 35 meshes with three Planentengan 37, which are in a conventional manner in engagement with a fixed ring gear 38.
  • Each of the planet gears 37 is in turn arranged on a respective shaft 39 associated therewith, which is in each case integrally connected to a driven gear 40.
  • the rotation of the planetary gears 37 about the motor shaft 27 results in a rotational movement of the output gear 40 about the motor shaft 27 and determines a rotational speed of this rotational movement of the output gear 40.
  • the output gear 40 is located on the freewheel 36 and is thus also on the motor shaft stored.
  • This freewheel 36 causes both the sun gear 35 and the output gear 40 rotate only in one direction of rotation of the rotational movement of the motor shaft 27.
  • the freewheel 29 may for example be of the type INA HFL0615, as offered by the company Schaeffler KG, D-91074 Herzogenaurach.
  • the gear device 13 has on the motor-side output shaft 27 also a belonging to a second planetary gear toothed sun gear 28, through the recess while the shaft 27 is performed, in this case, the shaft 27 is not connected to the sun gear 28.
  • the sun gear is fixed to a disc 34, which in turn is connected to the planetary gears 37.
  • the rotational movement of the planetary gears 37 about the motor-side output shaft 27 is thus transmitted to the disc 34, which in turn transmits its rotational motion identical to the sun gear 28.
  • the sun gear 28 meshes with a plurality of planet gears, namely three, each arranged on a parallel to the motor shaft 27 extending shaft 30 gears 31.
  • the shafts 30 of the three gears 31 are fixedly arranged, ie they do not rotate about the motor shaft 27.
  • the three gears 31 are in turn with an internally toothed ring gear engaged on its outer side has a cam 32 and subsequently as Cam wheel 33 is designated.
  • the sun gear 28, the three gears 31 and the cam 33 are components of the second planetary gear stage.
  • the planetary gear on the input side Rotationsbewegegung the shaft 27 and the rotational movement of the cam wheel 33 are in a ratio of 60: 1, ie by the two-stage planetary gear is a 60-fold reduction takes place.
  • a bevel gear 43 is also arranged on a second freewheel 42, which is in engagement with a second bevel gear, not shown.
  • This freewheel 42 also transmits only in one direction of rotation of the motor shaft 27, the rotational movement.
  • the direction of rotation, in which the freewheel 36 of the sun gear 35 and the freewheel 42 transmit the rotational movement of the motor shaft 27 are opposed to each other. This means that in one direction of rotation rotates only the freewheel 36 and in the other direction only the freewheel 42 with.
  • the second bevel gear is arranged at one end of a clamping shaft, not shown, which carries at its other end another planetary gear 46 ( Fig. 2 ).
  • the drive movement of the electric motor in a certain direction of rotation is thus transmitted to the two bevel gears 43 to the clamping shaft.
  • the tensioning wheel 49 of the tensioning device 6 designed as an internally toothed ring gear is thereby set in rotation.
  • the provided on its outer surface with a surface structure tensioning wheel 7 takes in its rotational movement, the respective strap through a frictional engagement, whereby the intended belt tension is applied to the belt loop.
  • the output gear 40 is formed in the region of its outer peripheral surface as a gear on which a toothed belt 50 of an envelope drive is arranged ( Fig. 5 and Fig. 6 ).
  • the toothed belt 50 also wraps around a relative to the output gear 40 in diameter smaller pinion 51, whose shaft drives an eccentric 52 for an oscillating reciprocating movement of the welding shoe 53.
  • a toothed belt drive and any other form of enveloping drives could be provided, such as a V-belt or chain drive.
  • the eccentric drive 52 has an eccentric shaft 54, on which an eccentric 55 is arranged, on which in turn sits a welding shoe arm 56 with a circular recess.
  • the welding device is further provided with a toggle device 60, by means of which the welding device is moved from a rest position (FIG. Fig. 7 ) in a welding position ( Fig. 9 ) can be transferred.
  • the toggle device 60 is attached to the welding shoe arm 56 and in this case provided with a pivotable on Schweissschuharm 56 longer toggle lever 61.
  • the toggle device 60 is further provided with a pivotable about a pivot axis 62 pivoted pivot member 63 which acts in the toggle lever 60 as a shorter toggle.
  • the pivot axis 62 of the pivot member 63 in this case runs parallel to the axes of the motor shaft 27 and the eccentric shaft 57th
  • the pivotal movement is initiated by means of the cam 32 of the cam wheel 33, which in the counterclockwise rotation in the rotation - based on the representations of Fig. 7 to 9 - the cam wheel 33 passes under the pivot member 63 ( Fig. 8 ).
  • a ramp-like rising surface 32a of the cam 32 in this case touches an inserted into the pivot member 63 contact element 64.
  • the pivot member 63 is thereby rotated clockwise about its pivot axis 62.
  • a two-part longitudinally adjustable toggle lever rod of the toggle lever 61 which is in two parts according to the principle "piston-cylinder", is arranged pivotable about a pivot axis 69.
  • the latter is also rotatably articulated to a pivot axis 65 designed as a further pivot point 65 of the welding shoe arm 56 in the vicinity of the welding shoe 53 and at a distance from the pivot axis 57 of the welding shoe arm 56.
  • a compression spring 67 is arranged on this, by means of which the toggle lever 61 is pressed both against the welding shoe arm 56 and against the pivoting element 63.
  • the pivoting member 63 is thus operatively connected with the toggle lever 61 and the welding shoe arm 56 with respect to its pivotal movements.
  • the in the representation of Fig. 6 and 9 counterclockwise driving movement of the electric motor is transmitted from the timing belt 50 to the now transferred by the toggle lever 60 in the welding position welding shoe 53, which is pressed on the two band layers and moves back and forth in an oscillating motion.
  • the welding time for generating a Reibschweissverbiridung is determined by the fact that the adjustable number of revolutions of the cam wheel 33 is counted from the time from which the cam 32, the contact element 64 is actuated.
  • the number of revolutions of the shaft 27 of the brushless DC motor 14 is counted to determine the position of the cam wheel 33, from which the engine 14 is turned off and thus the welding process is to be terminated.
  • the described successive processes “clamping” and “welding” can be triggered jointly in a switching state of the actuating element 16.
  • the actuating element 16 is to be actuated once, whereby the electric motor 14 first runs in the first direction of rotation and in this case (exclusively) the tensioning device 6 is driven.
  • the band tension to be applied to the respective band can preferably be set on the strapping apparatus by means of a pushbutton in nine stages which correspond to nine different band tension values. Alternatively, a continuous adjustment of the belt tension could be provided. Since the motor current from the torque of the tensioning wheel 7 and this in turn depends on the instantaneous belt tension, the applied belt tension can be adjusted in the form of a limit of the motor current via push buttons in nine stages on the control electronics of the strapping device.
  • the motor 14 After reaching an adjustable and thus predeterminable limit value for the motor current or for the belt tension, the motor 14 is turned off by its controller 22. Immediately thereafter, the motor is operated by the controller 22 in the reverse direction of rotation. As a result, in the manner described above, the welding shoe 53 is lowered onto the two superposed belt layers and the oscillating movement of the welding shoe is carried out to produce the friction-welded connection.
  • the actuator 16 By operating the switch 17, the actuator 16 can be occupied only with the function of triggering the clamping device. If such a setting is made, only the clamping device is put into operation by pressing the actuator and turned off again after reaching the preset belt tension. In order to trigger the Reibschweissvorgang the second actuator 18 must be actuated. However, apart from the separate triggering, the function of the friction welding device is identical to the other mode of the first actuating element.
  • rocker 8 by pressing the in the Fig. 2 . 10 . 11 illustrated rocker lever 9 pivoting movements to perform about the rocker axis 8a.
  • the rocker is this purpose by means of a behind the tensioning wheel 7 and therefore in Fig. 2 unrecognizable, rotatable cam moves.
  • the cam can perform a rotational movement of about 30 ° and move the rocker 8 or clamping plate 12 relative to the tensioning wheel 7, which allows insertion of the tape in the strapping or between the tensioning wheel 7 and clamping plate 12.
  • the tensioning wheel 7 facing toothed surface 12a (clamping surface) is concavely curved, wherein the radius of curvature corresponds to the radius of the tensioning wheel 7, or is slightly larger.
  • the toothed clamping plate 12 is arranged in a groove-shaped recess 71 of the rocker.
  • the clamping plate 12 is provided with a convexly curved contact surface 12 b, with which it is mounted in the recess 71 of the rocker 8 on a flat bearing surface 72 is.
  • the clamping plate 12 is able to perform in the position in the band running direction 70 relative to the rocker 8 and the tensioning wheel 7 tilting movements. Furthermore, the clamping plate 12 is fastened to the rocker 8 with a screw 73 carried out from below by the rocker. For this purpose, the screw is located in a slot 74 of the rocker, whose longitudinal extent runs parallel to the band path 70 in the strapping device. The clamping plate 12 is thereby additionally arranged longitudinally displaceable on the rocker 8 in addition to the tiltability.
  • the clamping rocker 8 In a clamping operation, first, the clamping rocker 8 from the rest position ( Fig. 10 ) in the clamping position ( Fig. 11 ). In the clamping position, the spring-loaded rocker 8 presses the clamping plate 12 in the direction of the tensioning wheel and clamps both tape layers between the tensioning wheel 7 and the clamping plate 12. Due to different strip thicknesses, different distances between the clamping plate 12 and the circumferential surface 7a of the tensioning wheel 7 can result. This not only different pivoting positions of the rocker 8 result, but also different position of the clamping plate 12 with respect to the circumferential direction of the tensioning wheel 7.
  • the clamping plate 12 is directed during the pressing of the tape by a longitudinal movement in the recess 71 and a tilting movement on the contact surface 12b on the support surface 72 independently so that the clamping plate 12 exerts over its entire length as uniform as possible pressure on the strapping.
  • the tensioning wheel 7 is turned on, the teeth of the clamping plate 12 holds the lower band position, while the tensioning wheel 7 detects the upper band position with its toothed peripheral surface 7a.
  • the rotation movement the tensioning wheel 7 and the lower coefficient of friction between the two band layers then causes the tensioning wheel to retract the upper band ply and thus increase the tension in the band loop to the desired tension value.

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

Abstract

Dispositif de banderolage mobile destiné au banderolage d'emballages de marchandise au moyen d'une bande, ce dispositif comportant un dispositif tendeur (6) servant à appliquer une tension sur une boucle de bande, un dispositif de soudage par friction (10) destiné à générer, au moyen d'un élément de soudage par friction, une liaison de soudage par friction sur deux zones superposées de la boucle de bande, et un accumulateur d'énergie (15) rechargeable servant à l'accumulation d'énergie électrique qui peut être libérée en tant qu'énergie d'entraînement pour des mouvements d'entraînement moteurs, au moins pour le dispositif de soudage par friction, pour créer une liaison de soudage par friction. L'invention vise à créer un dispositif de banderolage présentant une grande sécurité de fonctionnement et de bonnes propriétés de maniement, tout en offrant une possibilité de banderolage au moins sensiblement automatisé. A cet effet, ledit dispositif de banderolage comporte un engrenage planétaire (35,37,38) destiné à la transmission et au changement de régime d'un mouvement d'entraînement développé par une entraînement électrique du dispositif de soudage par friction.

Claims (15)

  1. Dispositif de banderolage mobile pour le banderolage de produit emballé comprenant une bande de banderolage qui présente un dispositif de serrage (6) pour appliquer une tension de bande sur une boucle d'une bande de banderolage, et
    un dispositif de soudage par friction (10) pour produire au moyen d'un élément de soudage par friction une liaison par soudage par friction en deux régions opposées de la boucle de la bande de banderolage, et
    un accumulateur d'énergie rechargeable, pour accumuler de l'énergie électrique, qui peut être libérée en tant qu'énergie d'entraînement pour des mouvements d'entraînement motorisés au moins pour le dispositif de soudage par friction (10) pour produire une liaison par soudage par friction,
    caractérisé par
    un engrenage planétaire pour le transfert et la variation de vitesse de rotation d'un mouvement d'entraînement produit par un entraînement électrique du dispositif de soudage par friction (10).
  2. Dispositif de banderolage mobile selon la revendication 1, caractérisé en ce que l'entraînement électrique est réalisé sous forme de moteur à courant continu sans balais (14).
  3. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé par un arrêt automatique de l'entraînement électrique.
  4. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la durée d'un cycle de soudage pendant laquelle le dispositif de soudage par friction (10) est utilisé peut être ajustée, la durée pouvant être prédéterminée en fonction d'un certain nombre de rotations de l'entraînement électrique.
  5. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé par des moyens de transfert du dispositif de soudage par friction (10) d'une position de repos dans une position de soudage, les moyens pouvant être entraînés par le même entraînement, avec lequel peut être produit un mouvement d'un élément de soudage par friction oscillant utilisé pour produire un soudage par friction.
  6. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de soudage par friction (10) est pourvu d'un levier à genouillère (61), qui peut pivoter entre deux positions d'extrémité, une position d'extrémité du levier à genouillère (61) déterminant une position de soudage par friction et l'autre position d'extrémité déterminant une position de repos, dans laquelle le dispositif de soudage par friction (10) n'est pas utilisé.
  7. Dispositif de banderolage mobile selon la revendication 6, caractérisé en ce que le levier à genouillère (61) est articulé de manière pivotante autour de deux axes de pivotement, au moins le mouvement dans une direction entre les deux positions d'extrémité ayant lieu sous forme d'un mouvement entraîné par un moteur par l'entraînement électrique du dispositif de banderolage.
  8. Dispositif de banderolage mobile selon la revendication 6 ou 7, caractérisé par l'engrenage planétaire qui transmet un mouvement d'entraînement de l'entraînement électrique au dispositif de serrage (6) pour un mouvement du levier à genouillère de sa position de repos dans la position de soudage par friction.
  9. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications 6 à 7, caractérisé en ce que le levier à genouillère (61) est sollicité par ressort.
  10. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé par seulement un entraînement électrique commun du dispositif de serrage (6) et du dispositif de soudage par friction (10).
  11. Dispositif de banderolage mobile selon la revendication 10, caractérisé en ce que l'entraînement électrique commun dans l'un de ses deux sens de rotation entraîne de préférence seulement le dispositif de serrage (6) et dans l'autre sens de rotation entraîne de préférence seulement le dispositif de soudage par friction (10).
  12. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé par un cycle de serrage du dispositif de serrage (6) commandé par la vitesse de rotation, pendant lequel l'entraînement électrique est entraîné au moins temporairement avec des vitesses de rotation différentes pour un couple au moins essentiellement constant.
  13. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé par un moyen d'actionnement pour déclencher une opération de soudage par friction se déroulant de manière automatisée, dans laquelle le dispositif de soudage par friction (10) passe dans une position de soudage par friction au moyen d'un mouvement d'entraînement par moteur, et la liaison par soudage par friction est produite au moyen de l'élément de soudage par friction.
  14. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'un arbre de sortie du côté du moteur peut être connecté fonctionnellement à plusieurs composants fonctionnels du dispositif de banderolage, l'un des composants fonctionnels étant le dispositif de soudage par friction (10), en amont duquel est monté l'au moins un engrenage planétaire.
  15. Dispositif de banderolage mobile selon au moins l'une quelconque des revendications précédentes, caractérisé par deux engrenages planétaires (46) pour le transfert et la variation de la vitesse de rotation d'un mouvement d'entraînement produit par un entraînement électrique du dispositif de soudage par friction (10).
EP09734179A 2008-04-23 2009-01-06 Dispositif de banderolage comportant un systeme d'entrainement Active EP2280875B1 (fr)

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KR (1) KR101675003B1 (fr)
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CN201411061Y (zh) 2010-02-24
RU2010147636A (ru) 2012-05-27
PL2280875T3 (pl) 2012-10-31
CN102026872B (zh) 2015-07-15
KR101675003B1 (ko) 2016-11-10
CN102026872A (zh) 2011-04-20
JP2011518085A (ja) 2011-06-23
US9174752B2 (en) 2015-11-03
WO2009129633A1 (fr) 2009-10-29
US20110056389A1 (en) 2011-03-10
EP2280875A1 (fr) 2011-02-09
RU2462403C2 (ru) 2012-09-27
ES2387345T3 (es) 2012-09-20
KR20100135273A (ko) 2010-12-24

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