EP2707288B1 - Procédé de commande du dispositif d'entraînement de bande d'une cercleuse - Google Patents

Procédé de commande du dispositif d'entraînement de bande d'une cercleuse Download PDF

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Publication number
EP2707288B1
EP2707288B1 EP12719363.9A EP12719363A EP2707288B1 EP 2707288 B1 EP2707288 B1 EP 2707288B1 EP 12719363 A EP12719363 A EP 12719363A EP 2707288 B1 EP2707288 B1 EP 2707288B1
Authority
EP
European Patent Office
Prior art keywords
strapping
band
unit
tape
retrieval
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
EP12719363.9A
Other languages
German (de)
English (en)
Other versions
EP2707288A2 (fr
Inventor
Jürgen Höhn
Jochen WITZGALL
Jürgen SCHÖDEL
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.)
SMB Schwede Maschinenbau GmbH
Original Assignee
SMB Schwede Maschinenbau GmbH
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
Application filed by SMB Schwede Maschinenbau GmbH filed Critical SMB Schwede Maschinenbau GmbH
Priority to PL12719363T priority Critical patent/PL2707288T3/pl
Publication of EP2707288A2 publication Critical patent/EP2707288A2/fr
Application granted granted Critical
Publication of EP2707288B1 publication Critical patent/EP2707288B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/02—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages
    • B65B57/04—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages and operating to control, or to stop, the feed of such material, containers, or packages
    • 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
    • B65B2210/00—Specific aspects of the packaging machine
    • B65B2210/12—Means for automatically detecting and removing jammed straps in strapping machines, e.g. jam clearing devices

Definitions

  • the invention relates to a method for driving a tape drive device of a strapping machine at a loss of tape in its Einschmann-return unit according to the preamble of claim 1 and a strapping machine with a suitably controlled tape drive means.
  • a strapping machine is z. B. from the DE 196 02 579 A1 known. It has in addition to the notorious manner in such equipment existing components such as machine frame, work table, and tape guide frame for passing around the strapping around the object to be strapped as a loose sling, placed under the work table tape drive means.
  • This comprises a combined Einsch man-retrieval unit for shooting the strapping in the tape guide frame and for retrieving the strapping tape from the tape guide frame to the application of the strapping around the object to be strapped.
  • an often stack height-dependent back tensioning device is provided for tightening the strapping band around the object.
  • the Einsch man-retrieval unit has at least one pair of rollers, between the roller gap, the strapping of one of the rollers in the insertion and return direction is driven passed.
  • the remindspann unit has another pair of rollers, between the roller gap, the strap is also passed and at least one of the rollers in the return direction around the material to be strapped in the strapping machine can be tensioned.
  • Guide channel sections are finally provided for guiding the strapping band through the band drive device, which guides the strapping band led from a supply roll or a buffer storage device to the back tension unit, between the latter and the insertion-return unit and from there in the direction of the ribbon frame on the work table.
  • the guide channel sections are each formed by the strapping on both sides of the flat sides leading cheeks, which are designed as webs or side surfaces of larger prismatic bodies.
  • a typical problem in the operation of such a strapping machine sometimes occurs due to improper handling of the strapping band.
  • the leading end of the tape can not reach the welding head and thus arranged there, e.g. in the form of a limit switch realized detector for detecting the leading end of the tape at the end of its Einschjanweges in the tape guide frame not operate. This recognizes the control of the strapping machine and then ensures a retrieval of the strapping band, usually until it emerges from the drive roller pair of the belt drive device against the Einschjanetti backwards.
  • the aforementioned error case is usually monitored by a scanning device, which detects the fact that the strapping has leaked out of the Einsch man-return unit counter to the Einschmanraum.
  • the back-tension unit is reversible in its drive direction such that when a fault detection - that is, a loss of tape in the Einsch man-return unit - the strapping is quasi automatically transported back to the Einsch man-return unit.
  • a disadvantage of this control method is the fact that the fault condition and the drive of the belt by means of a suitable sensor, e.g. an incremental encoder must be detected on the pinch roller of the Einsch man-retrieval unit. Its signal must then be further processed in the control program and integrated into the control process. This brings a control technology and additional equipment with it.
  • a suitable sensor e.g. an incremental encoder
  • the US 2003/0010225 A1 discloses a strapping machine in which only one Einsch think- and mulchhol roller pair is provided, which obviously also perceives the scrubspannfunktion.
  • a detector for detecting the tape is provided, which has two spring-loaded paddle. These interact with a proximity switch, which detects whether there is a strained, limp or no tape in the detector.
  • These two paddles have no functional similarities with a strapping unit for the strapping.
  • the DE 298 22 344 U1 shows a tape guiding device for an automatic packaging device having a tape drive with two rollers for shooting and retrieving / tensioning the tape. Further, a roller set for the tape storage is provided with a bridge, with which the tape from the supply roll either in the tape storage or directly via a pivot arm for clamping in the tape drive is inserted.
  • the tape drive has a detector that verifies that a tape is in the drive unit. If this is not the case, this is signaled to the tape feed roller set, which pulls out the tape completely to facilitate the replacement of the empty tape reel with a new tape reel.
  • the invention is therefore based on the object to provide a simplified, yet reliable driving method for the tape drive means of a strapping machine to remedy the initially described error case.
  • the strapping machine has a mounted on rollers machine frame 1, on which a work table 2 is mounted.
  • the work table 2 has (not shown) conveyor belts by means of which the objects 4 to be strapped, such. B. a magazine stack in Fig. 1 , is transported to the strapping position on the work table 2.
  • cross strapping can be integrated in the worktable 2 additionally a turntable, as he EP 0 445 429 B1 is removable.
  • a vertically standing tape guide frame 6 is arranged, with the aid of which the strap 7 can be guided around the object 4 on the work table 2 as a loose loop.
  • the stored on a side of the machine frame 1 on a supply spool not shown strapping 7 by the in Fig. 1 only schematically illustrated tape drive means 5 shot under the work table 2 by the welding head 3 of the strapping machine in the Einschinteweg forming tape guide frame 6 and thereby guided around this until it arrives again in the welding head 3.
  • the there arranged at the end of Einschdusweges detector in the form of a limit switch 16 detects the orderly arrival of the Umreifungsbandes seven.
  • Fig. 2 Based on Fig. 2 is the structure of the tape drive device 5 to explain.
  • the basic assemblies are on the one hand, the Einsch man-return unit 8 and on the other, therastspanniser 9, the above perform band manipulations as described.
  • a first guide channel section 10 leads the strap 7 of supply roll or buffer (not shown) arriving to theradspann unit 9.
  • a second guide channel section 11 connects theradspann unit 9 and the Einsch man-return unit 8.
  • a last guide channel section 12 leads from the insertion-retrieval unit 8 away towards the welding head 3 and the entry point of the strap 7 in the tape guide frame. 6
  • the Einsch manurfact-retrieval unit 8 has a drive roller pair 13 with a by a motor (not shown) driven roller 14 and a non-driven pressure roller 15.
  • the roller 14 of the drive roller pair 13 in circulation in the appropriate direction and circumscribed the strap 7 in the tape guide frame 6 until its leading end 40 under detection by the limit switch 16 comes to lie in the region of the welding head 3 and is fixed there. Subsequently, the drive roller pair 13 is activated in the opposite direction and thereby the strap 7 retrieved as described above until it is placed around the object to be strapped substantially without tension around.
  • the return tension unit 9 has a tensioning roller pair 17 with rollers 18, 19 which can be coupled with one another and which then, with the aid of its drive motor (not shown), applies a high tensile force to the return tension of the strapping belt 7 around the object 4 to be strapped.
  • the guide channel sections 10, 11 are jointly formed by web-shaped cheeks 20, 21 guided over the rollers 18, 19, which are fixed in the tape drive device 5 via projecting support feet 22, 23 in a manner to be explained in more detail.
  • the rollers 18, 19 engage in the drawing not closer to recognizable recesses in the cheeks 20, 21 therethrough.
  • the guide channel portion 12 is also formed by mutual cheeks 24, 25, wherein the one cheek 24 is formed by the side surface of a prismatic body 26 approximately T-shaped in plan view.
  • the other cheek 25 is bent in a curved portion corresponding to the outer periphery of the roller 14 through a wrap angle for the strapping band 7 and continues in a straight portion. It is formed on a corresponding, elongated prismatic body 27 as a side surface.
  • the trigger is the fact that with the end of the defined for the insertion of the strapping 7 in the machine control time of, for example, 0.2 s, the limit switch 16 does not respond. This is a signal that the strapping 7 with its leading end 40 has not reached the welding head 3 faulty. Due to this error detection the Einsch man-retrieval unit 8 is activated so that with a much lower return speed than when shooting the strapping 7 is transported against the Einsch manurgicardi E backwards. The return time is defined so that with certainty the strapping 7 is completely pulled out of the Einschinteweg and Einschnite-return unit 8. Thus, the strapping 7 remains with its leading end 40 between this and the back tension unit 9 stand.
  • the return time can also be variably defined by a type of self-learning system in that the return time is determined by deriving the required time from the previous shot in direct proportionality to the reduced return speed.
  • the control of the strapping machine then activates the back tension unit 9 against its usual back tensioning direction, which is directed counter to the insertion direction E.
  • the roller 18 of the tensioning roller pair 17 is rotated counterclockwise in rotation, so that the strapping 7 again in the weft E from the in Fig. 3 shown position in the roller nip of the drive roller pair 13 of the Einsch man-return unit 8 is transported. This takes up the leading end 40 of the strap 7 again.
  • the drive roller 14 of the insertion-return unit 8 the strapping 7 is again injected into the tape guide frame 6. In this case, the drive of the back tension unit 9 can be overridden again.

Landscapes

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

Claims (2)

  1. Procédé de commande du dispositif d'entraînement de bande d'une machine de cerclage en cas de perte de bande, dans lequel la machine de cerclage comprend:
    - une unité de lancement et de retour (8) avec au moins une première paire de rouleaux (13), entre lesquels la bande de cerclage (7) est menée, en pouvant être entraînée, par au moins un des rouleaux (14) dans la direction de lancement (E) de la bande de cerclage (7) et inversement,
    - un détecteur (16) pour détecter l'extrémité de bande avant (40) à l'extrémité du chemin de lancement, et
    - une unité de remise sous tension (9) disposée avant l'unité de lancement et de retour (8) par rapport à la direction de lancement (E), avec une seconde paire (17) de rouleaux (18, 19), entre lesquels la bande de cerclage (7) peut être tendue par au moins un des rouleaux (18) contre la direction de lancement (E) autour du produit à cercler (4) dans la machine de cerclage,
    caractérisé par les étapes de procédé suivantes:
    - interroger le détecteur (16) quant au lancement régulier de la bande de cerclage (7) dans la direction de lancement (E) jusqu'à l'extrémité du chemin de lancement,
    - en cas de lancement irrégulier de la bande de cerclage (7), activer l'unité de lancement et de retour (8) pour le retour de la bande de cerclage (7) avec une vitesse de retour définie sur un temps de retour défini, de telle manière que la bande de cerclage (7) soit retirée hors de l'unité de lancement et de retour (8) contre la direction de lancement (E), et
    - commander l'entraînement de l'unité de remise sous tension (9), de telle manière que l'unité de remise sous tension (9) ramène la bande de cerclage (7) dans la direction de lancement (E) dans l'unité de lancement et de retour (8), dans lequel la vitesse de retour vaut au maximum 50 %, de préférence 10 % à 20 % de la vitesse de lancement, et dans lequel le temps de retour défini est déduit de façon variable par un processus d'auto-apprentissage du temps de lancement de la bande de cerclage (7) d'un ou de plusieurs lancement(s) précédent (s) .
  2. Procédé selon la revendication 1, caractérisé en ce que le retour de la bande de cerclage (7) dans l'unité de lancement et de retour (8) effectué dans la direction de lancement (E) est interrompu, dès que la bande de cerclage (7) est insérée dans la paire de rouleaux d'entraînement (13) de celle-ci.
EP12719363.9A 2011-05-11 2012-05-02 Procédé de commande du dispositif d'entraînement de bande d'une cercleuse Active EP2707288B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12719363T PL2707288T3 (pl) 2011-05-11 2012-05-02 Sposób sterowania urządzeniem z napędem taśmowym maszyny taśmującej i odpowiednia maszyna taśmująca

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011075629.9A DE102011075629B4 (de) 2011-05-11 2011-05-11 Verfahren zur Ansteuerung der Bandantriebseinrichtung einer Umreifungsmaschine sowie entsprechende Umreifungsmaschine
PCT/EP2012/058027 WO2012152626A2 (fr) 2011-05-11 2012-05-02 Procédé de commande du dispositif d'entraînement de bande d'une cercleuse, et cercleuse correspondante

Publications (2)

Publication Number Publication Date
EP2707288A2 EP2707288A2 (fr) 2014-03-19
EP2707288B1 true EP2707288B1 (fr) 2019-04-17

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Application Number Title Priority Date Filing Date
EP12719363.9A Active EP2707288B1 (fr) 2011-05-11 2012-05-02 Procédé de commande du dispositif d'entraînement de bande d'une cercleuse

Country Status (5)

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US (2) US10322830B2 (fr)
EP (1) EP2707288B1 (fr)
DE (1) DE102011075629B4 (fr)
PL (1) PL2707288T3 (fr)
WO (1) WO2012152626A2 (fr)

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Publication number Publication date
US10322830B2 (en) 2019-06-18
DE102011075629B4 (de) 2016-09-15
WO2012152626A3 (fr) 2013-01-10
PL2707288T3 (pl) 2019-12-31
WO2012152626A2 (fr) 2012-11-15
DE102011075629A1 (de) 2012-11-15
US20140083310A1 (en) 2014-03-27
US20190256232A1 (en) 2019-08-22
US11597546B2 (en) 2023-03-07
EP2707288A2 (fr) 2014-03-19

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