EP0153547A1 - Cutting device for making fishbone cuts in a plastic foil - Google Patents

Cutting device for making fishbone cuts in a plastic foil Download PDF

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Publication number
EP0153547A1
EP0153547A1 EP84830048A EP84830048A EP0153547A1 EP 0153547 A1 EP0153547 A1 EP 0153547A1 EP 84830048 A EP84830048 A EP 84830048A EP 84830048 A EP84830048 A EP 84830048A EP 0153547 A1 EP0153547 A1 EP 0153547A1
Authority
EP
European Patent Office
Prior art keywords
ribbon
cutter
cuts
blades
cutter according
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.)
Withdrawn
Application number
EP84830048A
Other languages
German (de)
French (fr)
Inventor
Antonio Moranduzzo
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.)
DARIO MORANDUZZO Srl
Original Assignee
DARIO MORANDUZZO Srl
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 DARIO MORANDUZZO Srl filed Critical DARIO MORANDUZZO Srl
Priority to EP84830048A priority Critical patent/EP0153547A1/en
Publication of EP0153547A1 publication Critical patent/EP0153547A1/en
Withdrawn legal-status Critical Current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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/12—Slitting marginal portions of the work, i.e. forming cuts, without removal of material, at an angle, e.g. a right angle, to the edge of the work

Definitions

  • the invention relates to a cutter for making two series of juxtaposed and fishbone cuts in a thin continuous plastic strip.
  • the cutters used to make these cuts in thin plastic ribbons are of the guillotine type, that is to say with a vertically movable blade and sliding expediently in adhesion with a counterblade, so that they act by cutting the ribbon which is interposed in contrast between the cutting edges of the blade and the counterblade.
  • the object of the present invention is to eliminate this drawback by proposing a cutting machine of high production and high reliability.
  • the advantages obtained thanks to the present invention essentially consist in that it is possible to obtain a very high number of oscillations of the blades which can reach 4500 at mid-nute; that it is possible to cut ribbons of a certain width, that is to say up to 200mm; that it is possible to modify the angle of inclination of the cutouts with respect to the gitudinal axis of the ribbon; that it is possible to modify at will the distance between the two series of cuts, that is to say to modify the width of the central zone of the uncut ribbon; that the operation is very silent, vibration-free, with a high degree of reliability even after long periods of uninterrupted operation.
  • FIG.1 shows an overview of a cutter according to the invention, in the operating phase;
  • Fig.2 shows a variant of the cutter of Fig.1;
  • Fig. 3 represents the kinematic diagram of the movement of the blades of a shear with a double sharp blade for the cutter of FIG. 1
  • the depth of the cuts 40 and therefore the width of the central area 41, not cut, of the ribbon 4 is adjustable at will by moving the heads 5 on the slides 53; the inclination of the cuts 40 relative to the longitudinal axis of the strip 4 is adjustable by rotating the heads 5 on their own supports 52.

Abstract

The cutter for producing slits in a thin plastics strip (4) has a base plate (1) with supports for a strip guide roller (2) and for two mountings (52) for cutter heads (5). The latter carry scissor-like cutters on each side of the strip. Each cutter has two blades (6,7) which oscillate around a horizontal pivot (8). A belt drive for each cutter head has a drive shaft (13), two idler shafts (11) rotating in opposite directions, and an eccentric cam (10) to drive the blades. The transmission belt and pulleys are toothed.

Description

L'invention concerne une coupeuse pour effectuer deux séries de découpes juxtaposées et en arête de poisson dans un mince ruban continu de plastique.The invention relates to a cutter for making two series of juxtaposed and fishbone cuts in a thin continuous plastic strip.

On sait que les guirlandes en plastique métallisé, utilisées comme décoration et ornementation, sont obtenues en enroulant en hélice et avec un fin fil métallique, des franges elles-mêmes provenant de rubans sur lesquels ont été effectuées deux séries de découpes juxtaposées et orientées perpendiculai rement ou en oblique par rapport à l'axe longitudi nal des rubans. Les rubans à découpes obliques, c'est-à-dire en arête de poisson, sont préférés par les fabricants de guirlandes parce qu'ils per mettent de faire des guirlandes ayant tous leurs éléments orientés perpendiculairement à l'axe longitudinal de l'ouvrage et partant de diamètre maxi mum par rapport à la largeur initiale des rubans.We know that the garlands of metallized plastic, used as decoration and ornamentation, are obtained by winding helically and with a thin metal wire, fringes themselves coming from ribbons on which two series of juxtaposed cuts were made and oriented perpendicularly. or obliquely to the longitudinal axis of the ribbons. Ribbons with oblique cuts, i.e. fishbone, are preferred by garland manufacturers because they allow garlands to be made with all their elements oriented perpendicular to the longitudinal axis of the work. and therefore with a maximum diameter relative to the initial width of the ribbons.

On sait également que les coupeuses utilisées pour effectuer ces découpes dans de minces rubans de plastique sont de type à guillotine, c'est-à-dire avec une lame mobile verticalement et coulissant opportunément en adhérence avec une contrelame, de sorte qu'elles agissent en coupant le ruban qui se trouve interposé en contraste entre les arêtes tranchantes de la lame et de la contrelame.We also know that the cutters used to make these cuts in thin plastic ribbons are of the guillotine type, that is to say with a vertically movable blade and sliding expediently in adhesion with a counterblade, so that they act by cutting the ribbon which is interposed in contrast between the cutting edges of the blade and the counterblade.

Ce mode de fonctionnement des coupeuses connues est la cause principale de leur faible fiabilité étant donné que la matière plastique reste inévita blement en adhérence avec le tranchant de lame,et en émousse rapidement le fil; ce qui oblige à de fréquents arrêts et à effectuer un nettoyage soigné et un affilage de la lame.This operating mode of known cutters is the main cause of their low reliability since the plastic inevitably remains in adhesion with the edge of the blade, and quickly dulls the wire; which requires frequent stops and careful cleaning and sharpening of the blade.

La présente invention a pour but d'éliminer cet inconvénient en proposant une coupeuse de grande production et de fiabilité élevée.The object of the present invention is to eliminate this drawback by proposing a cutting machine of high production and high reliability.

On est parvenu à ce résultat en conformité avec l'invention en adoptant l'idée consistant à exécu ter les deux séries de découpes en arête de pois son au moyen de deux cisailles se faisant face, chacune à doubles lames tranchan tes, croisées et oscillant à la façon de paires de ciseaux, de manière telle que chaque découpage est obtenu par une division progressive mais rapide d'une portion correspondante du ruban.This was achieved in accordance with the invention by adopting the idea of carrying out the two series of peabone cutouts by means of two facing shears, each with double sharp, crossed and oscillating blades in the manner of pairs of scissors, so that each cutting is obtained by a gradual but rapid division of a corresponding portion of the ribbon.

Les avantages obtenus grâce à la présente invention consistent essentiellement en ce qu'il est possible d'obtenir un nombre très élevé d'oscillations des lames pouvant atteindre les 4500 à la mi nute; qu'il est possible de découper des rubans d'une certaine largeur c'est-à-dire jusqu'à 200mm; qu'il est possible de modifier amplement l'angle d'inclinaison des découpes par rapport à l'axe Ion gitudinal du ruban; qu'il est possible de modifier à volonté la distance entre les deux séries de découpes, c'est-à-dire de modifier la largeur de la zone centrale du ruban non découpée; que le foncti onnement est très silencieux, sans vibrations,avec un degré élevé de fiabilité même après de longues périodes de fonctionnement ininterrompu.The advantages obtained thanks to the present invention essentially consist in that it is possible to obtain a very high number of oscillations of the blades which can reach 4500 at mid-nute; that it is possible to cut ribbons of a certain width, that is to say up to 200mm; that it is possible to modify the angle of inclination of the cutouts with respect to the gitudinal axis of the ribbon; that it is possible to modify at will the distance between the two series of cuts, that is to say to modify the width of the central zone of the uncut ribbon; that the operation is very silent, vibration-free, with a high degree of reliability even after long periods of uninterrupted operation.

L'invention sera décrite plus en détail ci-dessous à l'aide de dessins,qui représentent seulement une forme possible de réalisation. La Fig.1 représente une vue d'ensemble d'une coupeuse conforme à l'invention, en phase de fonctionnement ; la Fig.2 représente une variante de la coupeuse de la Fig.1 ; la Fig. 3 représente le schéma cinématique du mouve ment des lames d'une cisaille à double lame tranchante pour la coupeuse de la Fig. 1The invention will be described in more detail below with the aid of drawings, which represent only one possible embodiment. Fig.1 shows an overview of a cutter according to the invention, in the operating phase; Fig.2 shows a variant of the cutter of Fig.1; Fig. 3 represents the kinematic diagram of the movement of the blades of a shear with a double sharp blade for the cutter of FIG. 1

Conformément à la présente invention et en se réfé rant aux Fig.1 et 3 des dessins ci-joints, une cou peuse pour exécuter des découpes en arête de poisson dans un mince ruban de plastique comprend:

  • - une plaque 1 de base avec deux supports à rouleau 2 pour guider le ruban 4, en amont et en aval des cisailles et avec une coulisse de type connu (non représentée sur le dessin) pour accompagner le ruban jusqu'à l'ouverture des cisailles; deux têtes 5 pour deux cisailles juxtaposées correspondantes chacune de ces cisailles avec doubles lames 6 - 7 tranchantes, croisées, oscillant autour d'un pivot 8 horizontal, commun et avec les pointes tournées vers l'axe du ruban; chacune des lames 6 - 7 oscil lantes a un bras 61-71 avec une fente 62-72 pour installer un coussinet 10 monté de manière excentrique sur un arbre tournant 11 correspondant; les deux lames 6 - 7 sont pressées l'une contre l'autre par un ressort 12 monté sur ledit pivot 8; les deux têtes de cisailles ont leurs bases cylindriques 51 correspondantes qui pivotent autour de leur propre axe vertical par rapport aux supports 52 correspon dants et ces supports glissent sur des coulisses 53 fixées sur ladite plaque 1 et orientées perpendiculairement à l'axe longitudinal du ruban 4 ;
  • - une cinématique pour chaque tête 5 de cisaille comprend: un arbre conducteur 13 qui reçoit le mou vement d'un arbre de transmission ou d'un moteur électrique (par souci de simplification, non repré senté sur le dessin), deux arbres conduits 11 avec des excentriques, tournant à contre-sens, une cour roie dentée 14 entourée de manière croisée sur les roues dentées 15-16-17 des arbres respectifs 13 et 11.
In accordance with the present invention and with reference to FIGS. 1 and 3 of the accompanying drawings, a thin neck for making fishbone cuts in a thin plastic tape comprises:
  • - a base plate 1 with two roller supports 2 to guide the ribbon 4, upstream and downstream of the shears and with a slide of known type (not shown in the drawing) to accompany the ribbon until the opening of the shears; two heads 5 for two corresponding juxtaposed shears each of these shears with double blades 6 - 7 cutting, crossed, oscillating around a pivot 8 horizontal, common and with the points facing the axis of the ribbon; each of the blades 6 - 7 lashing oscil has an arm 61-71 with a slot 62-72 for installing a bearing 10 mounted eccentrically on a corresponding rotating shaft 11; the two blades 6 - 7 are pressed against each other by a spring 12 mounted on said pivot 8; the two shear heads have their corresponding cylindrical bases 51 which pivot around their own vertical axis relative to the corresponding supports 52 and these supports slide on slides 53 fixed on said plate 1 and oriented perpendicular lairement to the longitudinal axis of the ribbon 4;
  • - kinematics for each shearing head 5 comprises: a conducting shaft 13 which receives the movement of a transmission shaft or an electric motor (for the sake of simplification, not shown in the drawing), two driven shafts 11 with eccentrics, turning in the opposite direction, a toothed line 14 surrounded in a crossed manner on the gear wheels 15-16-17 of the respective shafts 13 and 11.

Dans la solution simplifiée illustrée par la Fig.2 des dessins ci-joints, la lame inférieure 7' est fixe.In the simplified solution illustrated by Fig.2 of the accompanying drawings, the lower blade 7 'is fixed.

La profondeur des découpes 40 et par conséquent la largeur de la zone 41 centrale, non découpée, du ruban 4 est réglable à volonté en déplaçant les tê tes 5 sur les coulisses 53; l'inclinaison des dé - coupes 40 par rapport à l'axe longitudinal du ruban 4 est réglable en faisant tourner horizontalement les têtes 5 sur leurs propres supports 52.The depth of the cuts 40 and therefore the width of the central area 41, not cut, of the ribbon 4 is adjustable at will by moving the heads 5 on the slides 53; the inclination of the cuts 40 relative to the longitudinal axis of the strip 4 is adjustable by rotating the heads 5 on their own supports 52.

Claims (5)

1) Coupeuse pour effectuer des découpes en arête de poisson dans un mince ruban de plastique caractérisé par -une plaque 1 de base pour les supports à rouleau 2 avec coulisse pour le ruban 4 et pour les supports 52 de deux têtes 5 de cisailles, situ és de part et d'autre du ruban 4 ; -deux cisailles avec doubles lames 6-7 tranchantes, croisées , oscillant autour d'un pivot horizontal 8 commun et avec les pointes tournées vers l'axe longitudinal du ruban 4 ; -une cinématique pour chacune des têtes 5 de cisail les avec un arbre conducteur 13, deux arbres conduits 11 tournant à contre-sens et un coussinet 10 excentrique pour imprimer les oscillations rapides autour du pivot 8 aux lames 6-7 correspondantes, une courroie dentée 14 entourée de manière croisée sur les roues dentées 15-16-17 des arbres 13-11 correspondants. 1) Cutter for making fishbone cuts in a thin plastic ribbon characterized by -a base plate 1 for the roller supports 2 with slide for the ribbon 4 and for the supports 52 of two shear heads 5, situ és on either side of the ribbon 4; -two shears with double blades 6-7 sharp, crossed, oscillating around a common horizontal pivot 8 and with the tips facing the longitudinal axis of the ribbon 4; -a kinematics for each of the shear heads 5 with a conductive shaft 13, two driven shafts 11 rotating in the opposite direction and an eccentric pad 10 for printing the rapid oscillations around the pivot 8 with the corresponding blades 6-7, a toothed belt 14 crosswise surrounded on the cogwheels 15-16-17 of the corresponding shafts 13-11. 2) Coupeuse selon la revendication 1) caractérisée par le fait que chaque coussinet 10 est inséré dans une fente 62-72 d'un bras 61-71 de la lame 6-7 correspondante.2) Cutter according to claim 1) characterized in that each pad 10 is inserted into a slot 62-72 of an arm 61-71 of the corresponding blade 6-7. 3) Coupeuse selon la revendication 1) caractérisée par le fait que la lame 7' des cisailles est fixe.3) Cutter according to claim 1) characterized in that the blade 7 'of the shears is fixed. 4) Coupeuse selon la revendication 1) caractérisée par le fait que chaque tête 5 de cisailles est mobile autour de son propre axe vertical sur le sup port 52 correspondant.4) Cutter according to claim 1) characterized in that each shear head 5 is movable around its own vertical axis on the corresponding sup port 52. 5) Coupeuse selon la revendication 1) caractérisée par le fait que ledit support 52 de chaque tête 5 de cisaille glisse sur des coulisses 53 horizontales et orientées perpendiculairement à l'axe longitudinal du ruban 4.5) Cutter according to claim 1) characterized in that said support 52 of each shear head 5 slides on horizontal slides 53 and oriented perpendicular to the longitudinal axis of the ribbon 4.
EP84830048A 1984-02-29 1984-02-29 Cutting device for making fishbone cuts in a plastic foil Withdrawn EP0153547A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP84830048A EP0153547A1 (en) 1984-02-29 1984-02-29 Cutting device for making fishbone cuts in a plastic foil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84830048A EP0153547A1 (en) 1984-02-29 1984-02-29 Cutting device for making fishbone cuts in a plastic foil

Publications (1)

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EP0153547A1 true EP0153547A1 (en) 1985-09-04

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EP84830048A Withdrawn EP0153547A1 (en) 1984-02-29 1984-02-29 Cutting device for making fishbone cuts in a plastic foil

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3713497C1 (en) * 1987-04-22 1988-07-21 Solvar Systembaugesellschaft F Glazing for greenhouses or the like having border profiles, and a glass pane which can be used, in particular, for this
US4809475A (en) * 1985-11-14 1989-03-07 Eltreva Ag Facade system of metal sections
EP0624437A1 (en) * 1993-05-14 1994-11-17 Ward Holding Company, Inc. Apparatus for forming tabs on sheets
WO1999058316A1 (en) * 1998-05-08 1999-11-18 Polaroid Corporation Apparatus and method for applying heat boundable lamina to a substrate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE138593C (en) *
DE401719C (en) * 1922-07-26 1924-09-06 Ferdinand Krueger Paper fringe cutting machine
US3765087A (en) * 1969-08-05 1973-10-16 J Pawloski Powered cutting tool and cutting head therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE138593C (en) *
DE401719C (en) * 1922-07-26 1924-09-06 Ferdinand Krueger Paper fringe cutting machine
US3765087A (en) * 1969-08-05 1973-10-16 J Pawloski Powered cutting tool and cutting head therefor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809475A (en) * 1985-11-14 1989-03-07 Eltreva Ag Facade system of metal sections
DE3713497C1 (en) * 1987-04-22 1988-07-21 Solvar Systembaugesellschaft F Glazing for greenhouses or the like having border profiles, and a glass pane which can be used, in particular, for this
EP0624437A1 (en) * 1993-05-14 1994-11-17 Ward Holding Company, Inc. Apparatus for forming tabs on sheets
US6159327A (en) * 1996-04-12 2000-12-12 Polaroid Corporation Apparatus and method for applying heat bondable lamina to a substrate
WO1999058316A1 (en) * 1998-05-08 1999-11-18 Polaroid Corporation Apparatus and method for applying heat boundable lamina to a substrate

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Inventor name: MORANDUZZO, ANTONIO