EP0013968B1 - Procédé et dispositif pour le transport en registre d'une bande de matériau et utilisation de celle-ci - Google Patents

Procédé et dispositif pour le transport en registre d'une bande de matériau et utilisation de celle-ci Download PDF

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Publication number
EP0013968B1
EP0013968B1 EP80100300A EP80100300A EP0013968B1 EP 0013968 B1 EP0013968 B1 EP 0013968B1 EP 80100300 A EP80100300 A EP 80100300A EP 80100300 A EP80100300 A EP 80100300A EP 0013968 B1 EP0013968 B1 EP 0013968B1
Authority
EP
European Patent Office
Prior art keywords
strip
abutment
discontinuity
advance
web
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
Application number
EP80100300A
Other languages
German (de)
English (en)
Other versions
EP0013968A1 (fr
Inventor
Billy Ljungcrantz
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.)
Tetra Laval Holdings and Finance SA
Tetra Pak Developpement SA
Original Assignee
Tetra Laval Holdings and Finance SA
Tetra Pak Developpement SA
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 Tetra Laval Holdings and Finance SA, Tetra Pak Developpement SA filed Critical Tetra Laval Holdings and Finance SA
Publication of EP0013968A1 publication Critical patent/EP0013968A1/fr
Application granted granted Critical
Publication of EP0013968B1 publication Critical patent/EP0013968B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/015—Means for holding or positioning work for sheet material or piles of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B65H20/04—Advancing webs by friction roller to effect step-by-step advancement of web

Definitions

  • the invention relates to a method and to a device for register-fed feed of a material web and successive separation of individual blanks with a certain length from the web of the types mentioned in the preambles of claims 1 and 5, and also to a material web for use in such a method.
  • Adjustment marks are generally determined by photoelectric scanning, the scanning device being used via a regulating or control device to control the drive means.
  • the register-accurate path feed can only be carried out with a relatively high technical outlay.
  • the invention has for its object to provide even better dimensional accuracy of the blanks with simple means.
  • the web is practically only stopped and the blank is only cut off when the web has been moved past the stop and then moved back.
  • the web is therefore set in a precisely determined position to hold it against the movement in the web longitudinal direction or web feed direction.
  • the accuracy with which the register marks when separating from the separators, e.g. B. cross-cutting knives are positioned depends essentially only on the accuracy with which the separating members are positioned in the longitudinal direction of the rail against the stop.
  • the device shown as an exemplary embodiment is intended for use in a packaging machine of the type shown in US-A-4094124, namely for feeding and cross-cutting a material web from which cuboid packaging shells are produced, see FIGS. 4 to 8 of the patent specification.
  • the applicability of the invention is not limited to packaging machines.
  • the continuous material web A which is fed from a supply roll B of the device according to the invention, consists of a fairly rigid cardboard or plastic material, namely a material of the type used for example for milk packaging.
  • a material of the type used for example for milk packaging Along one of the longitudinal edges of the web A of the same width are in Equally spaced slots C are provided which extend at right angles to the edges and extend through the web in the direction of the web thickness, but only over part of the web width.
  • the discontinuities of the web which represent these slots are used as register marks according to the invention in the manner described below. They are expediently produced on the web at the same time as the printing of a regularly repeating pattern serving as decor and / or information - in FIG. 3 the pattern is shown in the form of a series of trapezoids.
  • the slots C are shown with a small width in the longitudinal direction of the web for the sake of clarity, but preferably they are "linear", i.e. they actually have no real width. This means that there is no material waste when the slots
  • the web is successively divided into sections of equal length along cutting lines coinciding with the slots C.
  • the section lines are shown with dash-dotted lines D.
  • Each web section E delimited by adjacent slots C or cutting lines D forms a blank for a packaging jacket.
  • the material web A is fed forward intermittently, ie to the left in FIGS. And 2.
  • a continuously rotating feed roller 21, which is arranged on one side of the feed path of the web, is used for the feed, against which the web is pressed intermittently by a pressure roller 22, which is arranged on the opposite side of the feed path and on which one end of a two-armed lever 23 is mounted.
  • the lever 23 is open mounted a fixed pin 24 and carries on its other end a roller 25 which is constantly held on the circumference of a radial control cam 26.
  • the radial control cam 26 sits on a shaft 27 which rotates at a speed adapted to the speed of the feed roller 21.
  • a return roller 28 which constantly rotates in the opposite direction to the feed roller 21.
  • the return roller 28 is only effective to move the material web A backwards, to the right in FIGS. 1 and 2, when a pressure roller 29 arranged on the other side of the feed path on an arm 30 fastened to the lever 23 moves the web against the return roller pressed. 1 and 2, the two pressure rollers 22 and 28 are never in contact with the web at the same time. If the pressure rollers are not pressed against the web, the friction of the web against the roller 21 or 28 is so low that the rollers slide on the web without exerting any appreciable force on the web in the longitudinal direction of the web.
  • the feed path of the material web A runs through a slot 31, which is formed by opposite edges of two flat, stationary plates 32 and 33.
  • the front sides 32A and 33A of the plates lie in the same plane, and on the front side 32A of the plate 32 there is a movable knife 34 which can be moved along the front side of the plate such that its cutting edge crosses the slot 31.
  • the edge of the plate 33 acts as a stationary counter knife working together with the knife 34.
  • the movements of the knife 34 are generated by means of a control arm 38, which is seated on the shaft 27 and thus rotates together with the control curve 26, via a two-armed lever 36 mounted on a fixed pin 35 with a roller 37.
  • a two-armed lever 39 is also provided directly in front of the plate 32 and the knife 34.
  • This lever is mounted on a fixed pin 40, the axis of which is parallel to the plane of the plate edges forming the slot 31.
  • One arm 41 of this lever protrudes against the feed path of the material web, but is normally, as shown in FIG. 1, moved away from the feed path.
  • the free end of the arm 41 is moved into the feed path at a point in the region of the one longitudinal edge of the web.
  • the pivoting of the lever 39 is controlled by the curve 26, specifically via an arm 42 fastened to the lever 23 and a link 43 articulated between this arm 42 and the other arm of the lever 39.
  • the shafts of the rollers 21 and 28, the journals 24, 35 and 40 as well as the shaft 27 of the control cams 26 and 38 are carried by stationary stand parts, one of which is indicated at 44 in FIGS. 1 and 2. These stand parts also carry the two plates 32 and 33 as well as stationary web guides which form the feed path of the web, but which have been omitted for the sake of clarity; 1 and 2, the feed path from the active substance web itself is shown. For the sake of clarity, the organs that drive the rollers 21 and 28 and the shaft 27 are also omitted from the drawing.
  • a blank forming device belonging to the packaging machine which carries out an introductory step in the shaping of the jacket blanks cut from the material web A.
  • the blank is folded around a line parallel to the cutting edges against a shaping mandrel 45 which works together with two spring-loaded pressure rollers 46.
  • the respective front end of the material web A is inserted between the forming mandrel 45 on the one hand and the two pressure rollers 46 on the other.
  • the shaping mandrel 45 is moved in the direction of the arrow, the pressure rollers 46 pressing the blank against the mandrel sides.
  • the curve 26 then causes the pressure roller 22 to move away and the pressure roller 29 to be placed against the web to activate the return roller 28 for a short time so that the web is moved back.
  • the curve 26 causes the lever 39 to be pivoted clockwise, so that its arm 41 presses downward against the material web A near its one edge just in front of the slot C.
  • the point where the arm 41 presses against the web A is indicated by a dash-dotted circle 41A.
  • the area F of the web lying in front of the slot C is thus displaced transversely to the web plane, ie in the direction of the web thickness, to such an extent that at least part of the rearward-facing edge G of this area reaches outside the feed path and thereby runs when the web is moved back to the front 33A of the plate 33. So the web will move backwards stopped and comes to a standstill with the edge G supported against the plate 33.
  • the force that the roller 28 exerts on the web A in its longitudinal direction is so small that the web region F displaced in the direction of the web thickness can hold the web against this force due to its rigidity.
  • the curve 38 causes the knife 34 to be moved over the slot 31 to the web along the slot C and Cut off cutting line D.
  • the feed roller 21 is reactivated to feed the web again, after which the process described above is repeated.
  • the web is cross-cut along the section line D, which coincide with the slots C of the web used for register adjustment. This is usually preferable and in some cases even necessary. However, it is within the scope of the invention to carry out the transverse separation along straight or curved or angled cutting lines which do not coincide with the slots C. If the cut lines coincide with the slots, the separation can be carried out on a slot which is one or more cut lengths before the slot used for register adjustment.
  • the organ - shown in the drawing by the lever 39 - is used to move the web area lying on one side of a slot C or another discontinuity of the web into the run-up position with respect to the plate 33 or another setting mark serving as a stop , be arranged behind the stop in the feed direction.
  • the material web A is stopped in its forward movement in that the displaced web region runs with its forward-facing edge onto the stop.
  • the displaced web region is released from the stop, for example by pulling the stop away, so that the feed can be resumed. In this case, there is no need to retrieve the material web when setting the register.
  • the invention also relates to a continuous packaging material web with register marks in the form of discontinuities which extend through the web in the direction of the web thickness, but only over part of the web width.
  • these discontinuities can be formed by short edge slots which are perpendicular to the longitudinal edges of the web.
  • they can also have other shapes, e.g. B. of cutouts on or within one or both of the web edges. If the discontinuities are formed by slits, these can of course also lie within the longitudinal edges of the web.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Replacement Of Web Rolls (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Labeling Devices (AREA)
  • Control Of Cutting Processes (AREA)
  • Paper (AREA)
  • Control Of Multiple Motors (AREA)

Claims (10)

1. Procédé pour le transport en registre d'une bande de matériau à traiter et pour des coupes successives séparant de la bande des sections de longueur déterminées, selon lequel la bande, munie de discontinuités (C) qui sont réparties sur sa longueur à un écartement correspondant à la longueur des sections et qui s'étendent à travers l'épaisseur de la bande mais seulement sur une fraction de la largeur de cette bande, avance à travers un poste de réglage de la concordance de l'avance en registre et chaque fois qu'une discontinuité parvient au poste de réglage de la concordance, cette bande se trouve maintenue temporairement dans une position de concordance en registre avec la discontinuité contre une marque de positionnement prévue au poste de réglage de concordance, tandis qu'au moins l'un des bords limitant cette discontinuité dans les zones de bande (F) se trouvant de part et d'autre de la discontinuité est décalé par rapport à l'autre dans la direction de l'épaisseur de la bande et amené en appui contre une butée (33A) constituant la marque d'arrêt et selon lequel, pendant cette position de concordance en registre dans laquelle le bord (G) s'appuie contre la butée (33A), la partie de bande se trouvant la plus en avant dans la direction du transport et présentant une longueur égale à la longueur des sections est séparée de la bande, caractérisé en ce que chaque discontinuité (C), en parvenant au poste de réglage de la concordance, franchit d'abord la butée (33A), après quoi la bande (A) est rappelée en arrière en sens inverse du transport en avant avec décalage de la zone de bande (F) comprenant le bord (G) jusqu'à ce que le bord avant (G) vienne contre la butée (33A) et qu'ainsi le mouvement de recul se trouve arrêté et en ce que la progression en avant de la bande (A) ne recommence que quand la fraction de bande (E) située la plus en avant a été séparée de la bande.
2. Procédé selon la revendication 1, caractérisé en ce que chaque fois qu'une discontinuité (C) parvient au poste du réglage de concordance, avant l'application de la discontinuité contre la butée (33A) celui des bords limitant la discontinuité (C) situé à l'arrière dans la direction de la progression de la bande est décalé par rapport au bord avant, de sorte que la progression de la bande (A) est interrompue par l'appui du bord arrière contre la butée (33A) et que la progression est reprise quand la section de bande (E) la plus en avant dans le sens de la progression est séparée et que le bord arrière est dégagé de la butée (33A).
3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la séparation -de la fraction de bande (E) la plus en avant s'effectue par la coupe de la bande (A) selon une ligne (D) qui coïncide avec une fente transversale constituant la discontinuité (C) située la plus en avant.
4. Procédé selon la revendication 3, caractérisé en ce que la coupe s'effectue en face da la butée (33A).
5. Dispositif pour l'exécution du procédé selon l'une quelconque des revendications précédentes, avec des moyens d'entraînement (21-30) pour la progression en avant de la bande (A) le long d'un parcours de transport, avec un poste de réglage de la concordance comprenant une marque de positionnement et se trouvant sur le parcours de transport, avec des organes d'arrêt pour immobiliser de façon répétée la bande A, prévus au poste de réglage de la concordance en registre avec une marque de concordance contre la marque de positionnement et avec des organes de sectionnement qui sont en action pendant les temps d'arrêt pour séparer de la bande (9) la fraction de bande (E) située la plus en avant et présentant une longueur égale à la longueur des sections, la marque de positionnement étant établie par une butée (33A) prévue le long du parcours de transport, caractérisé en ce qu'un organe de décalage (41), disposé en regard de la butée (33A) et pouvant s'insérer sur le parcours de transport, décale l'une des zones de bande (F) situées respectivement de part et d'autre de l'une des discontinuités (C) dans la direction de l'épaisseur de la bande jusqu'à une position pour la rencontre avec la butée (33A) et en ce que, après l'insertion de l'organe de décalage (41) dans le parcours de transport, les moyens d'entraînement (21-30) rappellent en arrière la bande (A) dans la direction de sa longueur jusqu'à ce que la zone de bande préalablement décalée (F) rencontre la butée (33A) par son bord (G) limitant la discontinuité (C).
6. Dispositif selon la revendication 5, caractérisé en ce que l'organe de décalage (41) peut être inséré dans le parcours de transport sous la commande (26, 42, 43) par les moyens d'entraînement (21-30).
7. Dispositif selon la revendication 5 ou la revendication 6, caractérisé en ce que l'organe de décalage (41) est disposé, dans la direction de la progression en avant de la bande (A), derrière la butée (33A).
8. Dispositif selon l'une quelconque des revendications 5 à 7, caractérisé en ce que les organes de sectionnement comprennent un couteau mobile (34) disposé contre la butée (33A) pour couper transversalement la bande (A) et que la butée (33A) est constituée sous la forme d'une contre- lame coopérant avec le couteau.
9. Utilisation d'une bande de matériau avec une impression se répétant régulièrement au moins sur une face de cette bande et avec des marques de concordance en registre qui, dans la direction de la longueur de bande, présentent un écartement égal à la longueur de répétition de l'impression, selon laquelle les marques de concordance en registre sont constituées par des discontinuités (C) qui s'étendent dans la direction de l'épaisseur de bande à travers la bande (A) mais seulement sur une partie de la largeur de bande pour l'exécution d'un procédé selon l'une quelconque des revendications 1-4.
10. Bande de matériau à traiter selon la revendication 9, caractérisée en ce que les discontinuités (C) sont constituées par fentes perpendiculaires aux bords longitudinaux de la bande (A).
EP80100300A 1979-01-25 1980-01-22 Procédé et dispositif pour le transport en registre d'une bande de matériau et utilisation de celle-ci Expired EP0013968B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH76579A CH637088A5 (de) 1979-01-25 1979-01-25 Verfahren und vorrichtung zum registerhaltigen vorschub einer werkstoffbahn.
CH765/79 1979-01-25

Publications (2)

Publication Number Publication Date
EP0013968A1 EP0013968A1 (fr) 1980-08-06
EP0013968B1 true EP0013968B1 (fr) 1983-09-21

Family

ID=4194651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100300A Expired EP0013968B1 (fr) 1979-01-25 1980-01-22 Procédé et dispositif pour le transport en registre d'une bande de matériau et utilisation de celle-ci

Country Status (9)

Country Link
EP (1) EP0013968B1 (fr)
JP (1) JPS55131499A (fr)
AT (1) ATE4692T1 (fr)
AU (1) AU538019B2 (fr)
BR (1) BR8000440A (fr)
CH (1) CH637088A5 (fr)
DE (1) DE3064861D1 (fr)
ES (1) ES487975A0 (fr)
MX (1) MX150041A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226701A1 (de) * 1992-08-13 1994-02-17 Wanzke Volker Vorschubgerät für Walzen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE435266B (sv) * 1983-02-10 1984-09-17 Tetra Pak Int Sett att frammata en monsterforsedd materialbana samt anordning for genomforande av nemnda sett
EP0300076A1 (fr) * 1987-07-23 1989-01-25 Mitsubishi Denki Kabushiki Kaisha Disjoncteur de puissance
SE0203411L (sv) 2002-11-19 2004-04-06 Tetra Laval Holdings & Finance Sätt att överföra information från en anläggning för tillverkning av förpackningsmatrial till en fyllmaskin, sätt att förse ett förpackningsmaterial med information, samt förpackningsmaterial och användning därav 2805
JP6870552B2 (ja) * 2017-09-27 2021-05-12 トヨタ紡織株式会社 穴あけ装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2049135A (en) * 1935-03-28 1936-07-28 Peyser Joseph Method of and means for severing and feeding a web of flexible material
US2725101A (en) * 1949-04-15 1955-11-29 New Jersey Machine Corp Feeding and cutting device for printed labels
US3435717A (en) * 1965-05-24 1969-04-01 Consolidated Lithographing Cor Label feed and cutting means
IT1080475B (it) * 1977-07-27 1985-05-16 Gd Spa Dispositivo di taglio ad alta precisione per la suddivisione di un nastro continuo in spezzoni di lunghezza determinata in particolare coupons etichette e simili

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226701A1 (de) * 1992-08-13 1994-02-17 Wanzke Volker Vorschubgerät für Walzen

Also Published As

Publication number Publication date
AU538019B2 (en) 1984-07-26
EP0013968A1 (fr) 1980-08-06
DE3064861D1 (en) 1983-10-27
ES8102047A1 (es) 1980-12-16
BR8000440A (pt) 1980-09-30
AU5476080A (en) 1980-07-31
JPS55131499A (en) 1980-10-13
MX150041A (es) 1984-03-05
ATE4692T1 (de) 1983-10-15
CH637088A5 (de) 1983-07-15
ES487975A0 (es) 1980-12-16

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