FR2735117A1 - SEPARATOR DEVICE, PARTICULARLY FOR PAPER OR CARDBOARD TABLECLOTH - Google Patents
SEPARATOR DEVICE, PARTICULARLY FOR PAPER OR CARDBOARD TABLECLOTH Download PDFInfo
- Publication number
- FR2735117A1 FR2735117A1 FR9506708A FR9506708A FR2735117A1 FR 2735117 A1 FR2735117 A1 FR 2735117A1 FR 9506708 A FR9506708 A FR 9506708A FR 9506708 A FR9506708 A FR 9506708A FR 2735117 A1 FR2735117 A1 FR 2735117A1
- Authority
- FR
- France
- Prior art keywords
- cylinders
- cylinder
- downstream
- upstream
- banana
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
- B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
- B65H23/0258—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a bowed axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4148—Winding slitting
Landscapes
- Paper (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Description
La présente invention concerne un dispositif séparateur destiné à assurer un repérage rigoureux, dans le sens longitudinal, de bandes résultant de la refente d'une nappe dans des rotatives de transformation de papier, de film, ou de tissu, dans les machines de façonnage notamment destinées à la fabrication d'étiquettes. The present invention relates to a separating device intended to ensure rigorous identification, in the longitudinal direction, of strips resulting from the slitting of a web in rotary presses for converting paper, film or fabric, in shaping machines in particular intended for the manufacture of labels.
On sait qu'après l'opération de refente destinée à créer des bandes contigues dans une nappe de papier, il est souvent nécessaire de positionner de façon positive les différentes bandes entre des joues de séparation prévues sur un cylindre de renvoi. La mise en oeuvre de tels dispositifs écarteurs implique que l'on intervienne sur le réglage de ceuxci à chaque fois que l'on souhaite modifier soit le nombre soit la largeur des bandes. On sait par ailleurs qu'une telle mise en oeuvre est limitée par la tension de la nappe et/ou par la longueur des brins en entrée et en sortie lorsque l'on souhaite ne pas détériorer le support. It is known that after the slitting operation intended to create contiguous strips in a sheet of paper, it is often necessary to positively position the different strips between the separating flanges provided on a return cylinder. The implementation of such spacer devices implies that one intervenes on the adjustment of these each time one wishes to modify either the number or the width of the bands. We also know that such an implementation is limited by the tension of the sheet and / or by the length of the strands at the input and at the output when it is desired not to damage the support.
L'écartement des bandes est réalisé la plupart du temps par des cylindres écarteurs ou "cylindres bananes". Ces cylindres sont constitués d'éléments métalliques cylindriques, tels que des bagues, qui sont montés en rotation libre les uns à côté des autres sur un axe cintré dont la courbure est parfois réglable en amplitude et en orientation. Les bagues cylindriques sont parfois revêtues d'un manchon élastique en élastomère, ce qui permet d'assurer notamment le lissage de la courbure de la surface externe de ces cylindres. The spacing of the bands is carried out most of the time by spacer cylinders or "banana cylinders". These cylinders are made up of cylindrical metallic elements, such as rings, which are mounted in free rotation one next to the other on a curved axis whose curvature is sometimes adjustable in amplitude and in orientation. The cylindrical rings are sometimes coated with an elastic elastomer sleeve, which makes it possible in particular to ensure the smoothing of the curvature of the external surface of these cylinders.
Une fois les bandes obtenues écartées de la valeur souhaitée, il reste à les découper dans le sens transversal lorsque l'on souhaite par exemple constituer des étiquettes. On sait que cette découpe transversale est réalisée la plupart du temps par un seul et même ciseau transversal qui découpe à la fois les étiquettes des différentes bandes sur toute la largeur de la nappe. On comprend dans ces conditions, que le moindre décalage dans le sens longitudinal d'une bande se traduit au niveau de la découpe par une erreur soit en plus soit en moins de la cote nominale de chacune des étiquettes découpées. C'est pourquoi cette découpe transversale est habituellement effectuée sur des bandes qui n'ont pas été écartées les unes des autres. Once the strips obtained have been removed from the desired value, it remains to cut them in the transverse direction when it is desired, for example, to constitute labels. It is known that this transverse cutting is carried out most of the time by a single transverse scissor which cuts at the same time the labels of the different bands over the entire width of the web. It is understood under these conditions, that the slightest offset in the longitudinal direction of a strip results in the cutting by an error either in more or less than the nominal dimension of each of the cut labels. This is why this transverse cutting is usually carried out on strips which have not been spaced from one another.
La présente invention a pour but de proposer un dispositif permettant d'obtenir, après la refente d'une nappe et l'écartement des bandes formées, un positionnement longitudinal rigoureux de celles-ci les unes par rapport aux autres, permettant la découpe transversale précise des bandes par un ciseau transversal unique. The object of the present invention is to propose a device making it possible to obtain, after the slitting of a sheet and the spacing of the formed strips, a rigorous longitudinal positioning of these relative to each other, allowing precise transverse cutting. bands by a single transverse chisel.
La présente invention a ainsi pour objet un dispositif de séparation de bandes, notamment de bandes de papier ou de carton, obtenues après la refente d'une nappe, du type comportant deux éléments séparateurs, ou "cylindres bananes" constitués de deux cylindres cambrés, à savoir un cylindre amont supérieur et un cylindre aval inférieur, la nappe prenant appui sur la partie supérieure du cylindre amont et sur la partie inférieure du cylindre aval, caractérisé en ce que les deux cylindres bananes amont et aval sont de même diamètre et leurs axes longitudinaux sont contenus dans des plans parallèles sensiblement verticaux perpendiculaires aux surfaces respectives de la nappe en entrée et en sortie des deux cylindres bananes, la concavité de chacun de ceux-ci étant orientée vers le haut, la courbure de chacun desdits cylindres étant telle que toute perpendiculaire abaissée d'un point quelconque de l'axe longitudinal de chacun des cylindres, sur l'axe longitudinal de l'autre cylindre, est de même longueur. The subject of the present invention is therefore a device for separating strips, in particular strips of paper or cardboard, obtained after the slitting of a sheet, of the type comprising two separating elements, or "banana cylinders" made up of two curved cylinders, namely an upper upstream cylinder and a lower downstream cylinder, the web bearing on the upper part of the upstream cylinder and on the lower part of the downstream cylinder, characterized in that the two upstream and downstream banana cylinders are of the same diameter and their axes longitudinal are contained in substantially vertical parallel planes perpendicular to the respective surfaces of the sheet at the inlet and outlet of the two banana cylinders, the concavity of each of these being oriented upwards, the curvature of each of said cylinders being such that any perpendicular lowered from any point on the longitudinal axis of each of the cylinders, on the longitudinal axis of the other cylinder is the same length.
Dans un mode de mise en oeuvre de l'invention, les nappes en entrée et en sortie sont en appui respectifs sur des cylindres droits, respectivement disposés en amont et en aval des cylindres bananes amont et aval, les distances respectives de ces cylindres droits auxdits cylindres bananes amont et aval étant importantes en comparaison de la flèche de chaque cylindre banane. In one embodiment of the invention, the input and output plies are in respective abutment on straight cylinders, respectively arranged upstream and downstream of the upstream and downstream banana cylinders, the respective distances of these straight cylinders from said cylinders upstream and downstream banana cylinders being important in comparison with the deflection of each banana cylinder.
Dans un autre mode de mise en oeuvre de l'invention, les courbes de chacun des deux cylindres bananes amont et aval sont des arcs de cercle. Ces arcs de cercle peuvent, de façon intéressante être parfaitement concentriques à un axe fictif situé à l'intersection du plan de symétrie des parties amont et aval de la nappe qui entrent et qui sortent du dispositif, avec un plan parallèle à ces dites parties. In another embodiment of the invention, the curves of each of the two upstream and downstream banana cylinders are arcs of a circle. These arcs of a circle can, interestingly, be perfectly concentric with a fictitious axis located at the intersection of the plane of symmetry of the upstream and downstream parts of the sheet which enter and leave the device, with a plane parallel to these said parts.
On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé sur lequel
La figure 1 est une vue en perspective d'un dispositif suivant la présente invention.An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the attached drawing in which
Figure 1 is a perspective view of a device according to the present invention.
La figure 2 est une vue schématique, en coupe verticale suivant le plan de symétrie longitudinal de la nappe, du dispositif représenté sur la figure 1. FIG. 2 is a schematic view, in vertical section along the longitudinal plane of symmetry of the ply, of the device shown in FIG. 1.
La figure 3 est une vue schématique en coupe suivant la ligne III-III de la figure 2 d'un mode de mise en oeuvre de l'invention, la nappe n'étant pas en place. Figure 3 is a schematic sectional view along line III-III of Figure 2 of an embodiment of the invention, the web not being in place.
On a représenté sur les figures l et 2 une nappe en papier 1 qui est reçue sur un premier cylindre droit 3 qui assure son maintien de façon que des moyens de découpage S puissent refendre la nappe l afin de constituer sept bandes de papier parallèles et adjacentes 7.Les bandes 7, une fois découpées, prennent appui sur la face supérieure d'un cylindre banane amont 9, dont la concavité est tournée vers le haut et est contenue dans un plan P vertical, de préférence perpendiculaire au plan de la nappe l. Le passage des bandes parallèles et adjacentes 7 sur le cylindre banane 9 assure, de façon connue, la séparation de celles-ci de sorte qu'en sortie du cylindre banane amont 9 les bandes de papier 7 ne sont plus parallèles mais tendent à s'écarter les unes des autres suivant un angle donné fonction de la courbure du cylindre banane 9. There is shown in Figures l and 2 a paper web 1 which is received on a first straight cylinder 3 which ensures its maintenance so that cutting means S can split the web l to form seven parallel and adjacent strips of paper 7. The strips 7, once cut, bear on the upper face of an upstream banana cylinder 9, the concavity of which faces upwards and is contained in a vertical plane P, preferably perpendicular to the plane of the ply l . The passage of the parallel and adjacent strips 7 over the banana cylinder 9 ensures, in known manner, the separation of these so that at the output of the upstream banana cylinder 9 the paper strips 7 are no longer parallel but tend to s' move away from each other at a given angle depending on the curvature of the banana cylinder 9.
Les bandes 7 sont alors reçues sur la face inférieure d'un cylindre banane aval 9' sur laquelle elles prennent appui, et dont la concavité est contenue dans un second plan P' parallèle au premier et est également dirigée vers le haut. Le cylindre banane aval 9' est disposé à un niveau inférieur à celui du cylindre banane amont 9. Les bandes 7 qui ressortent du cylindre banane aval 9' sont parallèles entre elles et sont écartées les unes des autres d'une distance e. En sortie du cylindre banane aval 9', les bandes 7 prennent appui sur un second cylindre droit il qui permet d'assurer leur tension, et la partie aval 1' de la nappe est parallèle à sa partie amont 1.The strips 7 are then received on the underside of a downstream banana cylinder 9 'on which they bear, and the concavity of which is contained in a second plane P' parallel to the first and is also directed upwards. The downstream banana cylinder 9 'is disposed at a level lower than that of the upstream banana cylinder 9. The strips 7 which emerge from the downstream banana cylinder 9' are mutually parallel and are spaced from each other by a distance e. At the outlet of the downstream banana cylinder 9 ′, the strips 7 are supported on a second straight cylinder il which makes it possible to ensure their tension, and the downstream part 1 ′ of the sheet is parallel to its upstream part 1.
Comme représenté sur la figure 3, les cylindres bananes amont 9 et aval 9' possèdent des flèches respectives f et f' qui sont fonction de l'écartement que l'on souhaite conférer aux bandes 7. As shown in FIG. 3, the upstream 9 and downstream 9 'banana cylinders have respective arrows f and f' which are a function of the spacing which it is desired to give to the strips 7.
Suivant l'invention la longueur h1,h2,... hn de chaque perpendiculaire A1B1, A2B2,.. .AnBn abaissée de 11 axe longitudinal w' du cylindre banane 9 sur l'axe longitudinal ww' de l'autre cylindre banane 9' possède une valeur constante. According to the invention the length h1, h2, ... hn of each perpendicular A1B1, A2B2, ... AnBn lowered by 11 longitudinal axis w 'of the banana cylinder 9 on the longitudinal axis ww' of the other banana cylinder 9 'has a constant value.
De préférence, la distance a séparant le premier cylindre droit 3, du cylindre banane amont 9 et la distance b séparant le cylindre banane aval 9' du second cylindre droit il, sont importantes en regard des flèches f et f' des cylindres bananes 9 et 9'. Bien entendu l'on pourrait également utiliser des cylindres bananes 9 et 9' dont la longueur de chaque perpendiculaire abaissée de l'axe longitudinal ww' du cylindre banane aval 9' sur l'axe longitudinal w' du cylindre banane amont serait constante.Preferably, the distance a separating the first right cylinder 3, from the upstream banana cylinder 9 and the distance b separating the downstream banana cylinder 9 'from the second right cylinder il, are large compared to the arrows f and f' of the banana cylinders 9 and 9 '. Of course one could also use banana cylinders 9 and 9 'whose length of each perpendicular lowered from the longitudinal axis ww' of the downstream banana cylinder 9 'on the longitudinal axis w' of the upstream banana cylinder would be constant.
De façon particulièrement intéressante, et comme représenté sur la figure 3, les cylindres bananes amont 9 et aval 9' sont en forme d'arcs de cercles de rayons respectifs r et r'. Ces arcs de cercle sont parfaitement concentriques à un axe fictif uu' situé à l'intersection du plan de symétrie Q des parties amont l et aval l' de la nappe qui entrent et qui sortent du dispositif, avec un plan R perpendiculaire au plan Q et parallèle à ces dites parties. In a particularly interesting manner, and as shown in FIG. 3, the upstream 9 and downstream 9 'banana cylinders are in the form of arcs of circles of respective radii r and r'. These arcs of a circle are perfectly concentric with a fictitious axis uu 'situated at the intersection of the plane of symmetry Q of the upstream l and downstream l' parts of the sheet which enter and leave the device, with a plane R perpendicular to the plane Q and parallel to these said parts.
Les cylindres bananes 9, 9' peuvent être obtenus par déformation de cylindres droits monoblocs. On peut ainsi réaliser de tels cylindres en appliquant à leurs extrémités respectives un moment de torsion. The banana cylinders 9, 9 ′ can be obtained by deformation of one-piece straight cylinders. It is thus possible to produce such cylinders by applying a torsional moment to their respective ends.
De tels cylindres peuvent être constitués de matériaux composites c'est à dire de matériaux constitués de résine renforcée par des fibres, notamment de verre, de carbone ou de "Kevlar". Such cylinders can be made of composite materials, that is to say materials made of resin reinforced with fibers, in particular glass, carbon or "Kevlar".
Claims (4)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9506708A FR2735117B1 (en) | 1995-06-07 | 1995-06-07 | SEPARATOR DEVICE, PARTICULARLY FOR PAPER OR CARDBOARD TABLECLOTH |
PCT/FR1996/000867 WO1996040580A1 (en) | 1995-06-07 | 1996-06-07 | Separator, in particular for paper or cardboard webs |
EP96922080A EP0773900B1 (en) | 1995-06-07 | 1996-06-07 | Separator, in particular for paper or cardboard webs |
DE69608209T DE69608209D1 (en) | 1995-06-07 | 1996-06-07 | SEPARATING DEVICE, ESPECIALLY FOR PAPER OR CARDBOARD FILES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9506708A FR2735117B1 (en) | 1995-06-07 | 1995-06-07 | SEPARATOR DEVICE, PARTICULARLY FOR PAPER OR CARDBOARD TABLECLOTH |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2735117A1 true FR2735117A1 (en) | 1996-12-13 |
FR2735117B1 FR2735117B1 (en) | 1997-07-25 |
Family
ID=9479705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9506708A Expired - Fee Related FR2735117B1 (en) | 1995-06-07 | 1995-06-07 | SEPARATOR DEVICE, PARTICULARLY FOR PAPER OR CARDBOARD TABLECLOTH |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0773900B1 (en) |
DE (1) | DE69608209D1 (en) |
FR (1) | FR2735117B1 (en) |
WO (1) | WO1996040580A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4177194A1 (en) * | 2021-11-05 | 2023-05-10 | GOEBEL Schneid- und Wickelsysteme GmbH | Spreading device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113184598A (en) * | 2021-04-02 | 2021-07-30 | 湖州点彩智能科技有限公司 | Passive cloth uniform tensioning mechanism and roll checking machine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE305092C (en) * | ||||
US2570061A (en) * | 1948-03-05 | 1951-10-02 | Johnstone Robert Mcc | Method and means for laterally separating and spacing a plurality of traveling strips |
US3463377A (en) * | 1966-11-09 | 1969-08-26 | Beloit Eastern Corp | Web separator |
US4146947A (en) * | 1976-07-14 | 1979-04-03 | Hermann Windel Gmbh & Co. | Spreader roll |
GB2144106A (en) * | 1983-07-22 | 1985-02-27 | Waertsilae Oy Ab | Spreading webs |
US4566154A (en) * | 1983-08-02 | 1986-01-28 | Scott Paper Company | Nonwoven web spreader |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2632022A1 (en) * | 1976-07-16 | 1978-01-19 | Dornbusch Maschf | Strip material uniform tensioning mechanism - has self aligning adjustable bearings bending roller over which strip runs |
-
1995
- 1995-06-07 FR FR9506708A patent/FR2735117B1/en not_active Expired - Fee Related
-
1996
- 1996-06-07 EP EP96922080A patent/EP0773900B1/en not_active Expired - Lifetime
- 1996-06-07 WO PCT/FR1996/000867 patent/WO1996040580A1/en active IP Right Grant
- 1996-06-07 DE DE69608209T patent/DE69608209D1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE305092C (en) * | ||||
US2570061A (en) * | 1948-03-05 | 1951-10-02 | Johnstone Robert Mcc | Method and means for laterally separating and spacing a plurality of traveling strips |
US3463377A (en) * | 1966-11-09 | 1969-08-26 | Beloit Eastern Corp | Web separator |
US4146947A (en) * | 1976-07-14 | 1979-04-03 | Hermann Windel Gmbh & Co. | Spreader roll |
GB2144106A (en) * | 1983-07-22 | 1985-02-27 | Waertsilae Oy Ab | Spreading webs |
US4566154A (en) * | 1983-08-02 | 1986-01-28 | Scott Paper Company | Nonwoven web spreader |
Non-Patent Citations (1)
Title |
---|
NN.: "Separating slit strip and foil", ENGINEERING, vol. 213, no. 3, LONDON GB, pages 131 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4177194A1 (en) * | 2021-11-05 | 2023-05-10 | GOEBEL Schneid- und Wickelsysteme GmbH | Spreading device |
WO2023079045A1 (en) * | 2021-11-05 | 2023-05-11 | Goebel Schneid- Und Wickelsysteme Gmbh | Retractor device |
Also Published As
Publication number | Publication date |
---|---|
EP0773900A1 (en) | 1997-05-21 |
FR2735117B1 (en) | 1997-07-25 |
EP0773900B1 (en) | 2000-05-10 |
WO1996040580A1 (en) | 1996-12-19 |
DE69608209D1 (en) | 2000-06-15 |
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