EP0357902B1 - Dispositif pour tendre et fermer un ruban de cerclage en matière plastique - Google Patents

Dispositif pour tendre et fermer un ruban de cerclage en matière plastique Download PDF

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Publication number
EP0357902B1
EP0357902B1 EP89112094A EP89112094A EP0357902B1 EP 0357902 B1 EP0357902 B1 EP 0357902B1 EP 89112094 A EP89112094 A EP 89112094A EP 89112094 A EP89112094 A EP 89112094A EP 0357902 B1 EP0357902 B1 EP 0357902B1
Authority
EP
European Patent Office
Prior art keywords
tensioning
wheel
strap
tensioning wheel
welding
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.)
Expired - Lifetime
Application number
EP89112094A
Other languages
German (de)
English (en)
Other versions
EP0357902A1 (fr
Inventor
Bruno Kägi
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.)
Strapex AG
Original Assignee
Strapex AG
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 Strapex AG filed Critical Strapex AG
Priority to AT89112094T priority Critical patent/ATE95475T1/de
Publication of EP0357902A1 publication Critical patent/EP0357902A1/fr
Application granted granted Critical
Publication of EP0357902B1 publication Critical patent/EP0357902B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B13/20—Means for compressing or compacting bundles prior to bundling
    • 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
    • B65B13/327—Hand tools

Definitions

  • the present invention relates to a device for tensioning and closing a plastic strapping around a packaged product.
  • the present invention has for its object to provide a device of the type mentioned, which allows a perfect and safe severing of the upper band section without damaging the same even with very tight strapping.
  • the second clamping device ensures that, after the band tension has been reduced in the section of the strapping band lying between the friction welding device and the tensioning wheel, the full tension is maintained in the remaining section of the strapping band which is guided around the packaged goods. Reducing the belt tension has the further advantage that the upper belt end is below a certain level for the friction welding process as well Tension is present, which is, however, less than the tension existing at the end of the tensioning process.
  • the tensioning wheel is a slotted wheel which allows the strapping to be tensioned with very great tensile force.
  • FIG. 1 shows a side view of a tensioning and closing device 2 placed on a package 1, which is used for tensioning and closing a plastic strapping 3 which is guided around the package 1.
  • the device 1 has a first clamping device 4 for holding the initial section 3a of the strapping band 3 located below.
  • This clamping device 4 consists of a lower clamping element 6 fastened on a base plate 5 and a movable clamping foot 7.
  • the device 2 is further provided with a friction welding device 8 which has an upper welding jaw 9 and a lower welding jaw 10.
  • the upper welding jaw 9 is designed as a lifting and lowering clamp 9.
  • the lower welding jaw 10 is mounted in a mounting part 11 fastened to the base plate 5 and can be driven back and forth transversely to the longitudinal direction of the strapping band 3 by means of a drive mechanism (not shown).
  • the structure of the friction welding device 8 and the drive mechanism for the lower welding jaw 10 is explained in more detail in the already mentioned EP-OS 0188720.
  • the friction welding device 8 is assigned a cutting knife 12, which is used to cut off the upper band section 3b behind the welding point. This separating knife 12 can be driven back and forth synchronously with the lower welding jaw 10, as is also set out in more detail in EP-OS 0188720.
  • a tensioning device 13 which has a slotted wheel 14 and a tensioning lever 15, which is shown in FIG. 1 in its lower end position.
  • the slot wheel 14 is provided with two slots 14a and 14b, which are at right angles to one another, for inserting the strapping band 3.
  • the friction welding device 8 is preceded by a second clamping device 16, consisting of a lower clamping plate 17 and a lowerable clamping foot 18.
  • a separating device 19 Seen in the belt tensioning direction A behind the slot wheel 14, a separating device 19 is arranged, which serves to move the tensioning wheel 14 towards a supply roll, not shown to cut the running strapping 3 after the closing process has been completed.
  • the tensioning lever 15 is provided at its free end with a rotary knob 20, by means of which a switching device (not shown in more detail) accommodated in the tensioning lever 15 can be actuated, the functioning of which will be discussed in more detail below.
  • FIGS. 2-4 there is a U-profile 21 on the base plate 5, which is fastened to the base plate 5 with its base part 22.
  • the side walls 23 and 24 of the U-profile 21 serve as end shields for a shaft 25 which carries the slot wheel 14 and a ratchet wheel 26.
  • Slotted wheel 14 and ratchet wheel 26 are firmly seated on the shaft 25 and can thus be rotated together.
  • the ratchet wheel 26 forms part of a locking mechanism 27, which further includes a pawl 28. This pawl 28 is pivotally mounted on an axis 29, which is in storage 30 is held.
  • the shaft 25 also carries a control disk 32 which is mounted on a hub 33 which is arranged on the shaft 25 in a freely rotatable manner.
  • the control disk 32 has a control cam 32a (FIG. 2) which serves to push the pawl 28 away against the force of the leg spring 31 and to disengage the nose 28a of the pawl 28 from the ratchet wheel 26.
  • a brake arrangement 34 (FIGS. 3 and 4) designed as a friction brake is arranged on the end of the shaft 25 opposite the slot wheel 14.
  • This brake arrangement 34 has a brake disk 35 which rotates with an extension 25a of the shaft 25 and which is pressed by means of plate springs 36 against a brake plate 37 which is anchored to the base plate 5.
  • the plate springs 36 are preloaded by means of a washer 38 and a screw 39.
  • the clamping device 16 is activated in a manner not shown in the figures after the end of the tensioning process, i.e. the clamping foot 18 lowered.
  • the tensioning lever 15 is pivoted again in the direction of arrow C into the starting position shown in FIG. 1, in which the switching device is actuated by turning the rotary knob 20.
  • This changeover device disengages one driver pawl from the ratchet wheel 26, which is prevented from turning back by the pawl 28.
  • the other driver pawl is brought into engagement with the control disk 32, which is now rotated counterclockwise (arrow F in FIG. 2) by pivoting the tensioning lever 15 again in the direction of arrow B.
  • the control disk 32 activates the second clamping device 16, which clamps the strapped strap 3 and holds the strap tension applied by the tensioning device 13.
  • the tensioning lever 15 is pivoted back into its lower end position in the direction of arrow C, with the result that the clamping devices 4 and 16 are released and the upper welding jaw 9 is raised .
  • the separating device 19 is actuated to remove the piece of tape 1 deformed in the region of the slotted wheel 14 from the tape supply cut off.
  • the slotted wheel 14 is rotated back into its starting position, in which an easy insertion of the strapping 3 is possible for the next tensioning and closing process. This positioning of the slot wheel 14 is explained in more detail in EP-OS 0284798.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Package Closures (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Cable Accessories (AREA)
  • Refuse Collection And Transfer (AREA)

Claims (9)

  1. Appareil pour tendre et fermer un ruban de cerclage (3) en matière plastique passé autour d'un paquet (1), comprenant un premier dispositif de serrage (4) pour le maintien de la section de début inférieure (3a) du ruban de cerclage (3), une roue de serrage (14) destinée à agir sur la section supérieure (3b) du ruban de cerclage (3) en vue de tendre ledit ruban de cerclage (3), un dispositif de soudure par friction (8) pour relier des sections (3a', 3b') du ruban de cerclage (3) qui se recouvrent, placé dans la direction de serrage (A) en amont de la roue de serrage (14) et muni de deux mâchoires de soudage (9, 10) pouvant être déplacées l'une par rapport à l'autre, un second dispositif de serrage (16) pour le maintien de la section supérieure (3b) du ruban de cerclage (3) placé dans la direction de serrage (A) en amont du dispositif de soudure par friction (8) et pouvant être activé après la fin de l'opération de serrage, un système de détente (32, 34) qui peut être activé, après la fin de l'opération de serrage, pour agir sur la roue de serrage (14) et qui provoque une diminution de la force de traction exercée à la fin de l'opération de serrage par la roue de serrage (14) sur le ruban de cerclage (3) pour maintenir dans la section (3c) du ruban de cerclage (3) située dans la direction de serrage (A) en aval du dispositif de soudure par friction (8), un effort de traction résiduel (σ₂) qui est plus faible que l'effort de traction (σ₁) dans le ruban de cerclage (3) à la fin de l'opération de serrage, et un organe de séparation (12) intercalé entre le dispositif de soudure par friction (8) et la roue de serrage (14) et servant à sectionner la section supérieure (3b) du ruban de cerclage (3) après le soudage de ce dernier.
  2. Appareil selon la revendication 1, caractérisé en ce que le dispositif de détente comprend un système de commande (32) pour la libération de la roue de serrage (14) après l'activation du second dispositif de serrage (16) ainsi qu'un système de freinage (34) agissant sur la roue de serrage (14), qui répond après une certaine rotation de la roue de serrage (14) libérée et sous l'action du ruban de cerclage (3) tendu et bloque ladite roue de serrage (14) de façon à empêcher une rotation en arrière supplémentaire.
  3. Appareil selon la revendication 2, caractérisé en ce que la roue de serrage (14) est couplée avec un système d'encliquetage (27) qui empêche la rotation en arrière de celle-ci et qui peut être déverrouillé après la fin de l'opération de serrage et après l'activation du second dispositif de serrage (16) par le système de commande (32).
  4. Appareil selon la revendication 3, caractérisé en ce que le système d'encliquetage comprend une roue à cliquet (26) couplée en rotation avec la roue de serrage (14), ainsi qu'un cliquet d'arrêt (28) coopérant avec ladite roue à cliquet et sollicité en vue de son déverrouillage par un organe de commande (32), de préférence un disque à cames, du système de commande.
  5. Appareil selon la revendication 2, caractérisé en ce que le système de freinage est un frein à friction (34) qui agit sur l'arbre (25) de la roue de serrage (14).
  6. Appareil selon la revendication 5, caractérisé en ce que, pour la génération d'un moment de freinage déterminé, le frein à friction (34) comprend des organes de freinage (35, 37) appliqués l'un contre l'autre avec une force correspondante, l'un des organes de freinage (35) étant monté sur l'arbre (25) de la roue de serrage (14) et l'autre organe de freinage (37) étant monté fixe.
  7. Appareil selon l'une des revendications 1 à 6, caractérisé en ce que la roue de serrage est une roue à fentes (14) avec au moins une fente (14a, 14b) destinée à la mise en place du ruban de cerclage (3).
  8. Appareil selon l'une des revendications 1 à 7, caractérisé en ce que la mâchoire de soudage supérieure (9) est conformée en poinçon de serrage pouvant être relevé et abaissé, et que la mâchoire de soudage inférieure (10) peut être animée d'un mouvement alternatif.
  9. Appareil selon l'une des revendications 1 ou 8, caractérisé en ce que l'une des mâchoires de soudage, de préférence la mâchoire de soudage inférieure (10), peut être entraînée transversalement à la direction longitudinale du ruban, et que l'organe de séparation (12) comporte un couteau qui peut être entraîné en synchronisme avec ladite mâchoire de soudage (10).
EP89112094A 1988-09-08 1989-07-03 Dispositif pour tendre et fermer un ruban de cerclage en matière plastique Expired - Lifetime EP0357902B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112094T ATE95475T1 (de) 1988-09-08 1989-07-03 Spann- und verschliessgeraet fuer ein umreifungsband aus kunststoff.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3364/88 1988-09-08
CH336488 1988-09-08

Publications (2)

Publication Number Publication Date
EP0357902A1 EP0357902A1 (fr) 1990-03-14
EP0357902B1 true EP0357902B1 (fr) 1993-10-06

Family

ID=4254376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112094A Expired - Lifetime EP0357902B1 (fr) 1988-09-08 1989-07-03 Dispositif pour tendre et fermer un ruban de cerclage en matière plastique

Country Status (8)

Country Link
US (1) US5058365A (fr)
EP (1) EP0357902B1 (fr)
JP (1) JPH02109814A (fr)
KR (1) KR900004598A (fr)
AT (1) ATE95475T1 (fr)
DE (1) DE58905827D1 (fr)
DK (1) DK422089A (fr)
PT (1) PT91626B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4109295A1 (de) * 1991-02-07 1992-08-13 Leonische Drahtwerke Ag Verfahren zum herstellen eines kabelbaumes und vorrichtung dazu
JPH0596226U (ja) * 1992-06-01 1993-12-27 日本建鐵株式会社 グリットカーテンウォールの止水構造
US5355913A (en) * 1992-10-09 1994-10-18 United States Surgical Corporation Surgical repair device
US5417698A (en) * 1992-10-09 1995-05-23 United States Surgical Corporation Apparatus for tightening elongated wound closure elements
DE9316072U1 (de) * 1993-10-21 1994-01-05 Cyklop Gmbh Vorrichtung zum Spannen und Verschließen von Umreifungsbändern
US5996314A (en) * 1996-05-22 1999-12-07 Currency Systems International, Inc. Currency strapping machine
ATE237500T1 (de) * 1998-10-29 2003-05-15 Orgapack Gmbh Umreifungsgerät
DE19909620A1 (de) * 1999-03-05 2000-09-07 Cyklop Gmbh Vorrichtung zum Spannen und Verschließen von Umreifungsbändern
US6412257B1 (en) * 2000-08-28 2002-07-02 Tekpak Corporation Portable and manual binding device
US6684761B2 (en) * 2002-06-11 2004-02-03 Hsiu-Man Yu Chen Strapping packaging device
DE102006010912A1 (de) * 2006-03-09 2007-09-13 Greiner Gmbh & Co Kg Vorrichtung zum Spannen eines Bandes
US8323294B2 (en) * 2007-08-21 2012-12-04 Depuy Spine, Inc. Tether tensioning instrument
US9221567B2 (en) 2012-01-25 2015-12-29 Southern Bracing Systems Enterprises, Llc Systems, methods, and devices for tensioning straps
CN103640724A (zh) * 2013-12-04 2014-03-19 吴江市信港纸箱厂 聚酯打包带热压连接定型器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982069A (en) * 1958-04-21 1961-05-02 England Victor Strapping device and method
US3269300A (en) * 1964-12-29 1966-08-30 Fmc Corp Strapping machine
US3447447A (en) * 1967-02-21 1969-06-03 Stanley Works Strapping mechanism
US3566778A (en) * 1969-01-27 1971-03-02 Signode Corp Strap feeding and tensioning system
US4050372A (en) * 1976-01-21 1977-09-27 Signode Corporation Automatic strapping machine
JPS5727852A (en) * 1980-07-25 1982-02-15 Cyklop Strapping Corp Strap stretcher
CH664732A5 (de) * 1984-12-27 1988-03-31 Strapex Ag Geraet zum verbinden der enden eines thermoplastischen kunststoffbandes.
CH665604A5 (de) * 1985-01-23 1988-05-31 Strapex Ag Spann- und verschliessgeraet fuer kunststoffband.
ES2022492B3 (es) * 1987-03-20 1991-12-01 Strapex Ag Aparato tensor para una cinta de embalaje

Also Published As

Publication number Publication date
KR900004598A (ko) 1990-04-12
EP0357902A1 (fr) 1990-03-14
DK422089D0 (da) 1989-08-28
ATE95475T1 (de) 1993-10-15
PT91626A (pt) 1990-03-30
DK422089A (da) 1990-03-09
JPH02109814A (ja) 1990-04-23
DE58905827D1 (de) 1993-11-11
PT91626B (pt) 1995-07-18
US5058365A (en) 1991-10-22

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