EP0773900B1 - Dispositif separateur notamment pour nappe de papier ou de carton - Google Patents
Dispositif separateur notamment pour nappe de papier ou de carton Download PDFInfo
- Publication number
- EP0773900B1 EP0773900B1 EP96922080A EP96922080A EP0773900B1 EP 0773900 B1 EP0773900 B1 EP 0773900B1 EP 96922080 A EP96922080 A EP 96922080A EP 96922080 A EP96922080 A EP 96922080A EP 0773900 B1 EP0773900 B1 EP 0773900B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- separator
- rollers
- downstream
- upstream
- roller
- 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
Links
Images
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
Definitions
- the present invention relates to a device separator intended to ensure rigorous identification, in the longitudinal direction, bands resulting from the slitting a web in web presses transformation of paper, film, or fabric, into shaping machines especially intended for manufacture of labels.
- Spacer cylinders of this type have the disadvantage of not forming a regular curve since, by construction, they are made up of a series of adjacent rectilinear elements thus forming a broken line. If the curvature of such cylinders is regular enough to provide lateral separation of the paper strips it does not allow, on the other hand, because of this lack of regularity of their curvature, to provide a location different bands with respect to each other which is perfect in the longitudinal direction. Indeed the width of the strips obtained by the slitting is not, at least most of the time, equal to the width different rectilinear elements, so that a band can come to bear on several elements which destroys its rigorous tracking in the sense longitudinal. However, such machines must ensure perfect alignment in the longitudinal direction for strips of any width without any readjustment mechanical.
- roller sets spaced from each other consisting of a first series of curved upstream rollers and a second series of downstream rollers each having their part central a different curvature of the curvatures of their extremities.
- rollers do not do not have a strictly regular curvature, they can only be used in areas where extreme precision is not required.
- the object of the present invention is to provide a separating device making it possible to obtain, after the slitting of a sheet and the spacing of the bands formed, a rigorous longitudinal positioning of these relative to each other, allowing their precise transverse cutting with a transverse scissor unique.
- the subject of the present invention is therefore a tape separation device, especially for tape separation of paper or cardboard, obtained after the slitting of a tablecloth, of the type comprising two separating cylinders curves, or "banana cylinders", namely a cylinder upper upstream and a lower downstream cylinder, the water table bearing on the upper part of the cylinder upstream and on the lower part of the downstream cylinder, in which the two separator cylinders upstream and downstream are of the same diameter and their axes longitudinal are contained in parallel planes substantially vertical perpendicular to surfaces respective of the water table at the input and output of the two separator cylinders, the concavity of each of these being oriented upwards, the curvature of each 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 of the same length, characterized in that the separating cylinders consist of rectilinear and monoblock elements at the ends of which
- the elements of the input and output tablecloth are in respective support on straight cylinders, respectively arranged upstream and downstream of separating cylinders upstream and downstream, the distances respective of these cylinders straight to said cylinders upstream and downstream separators being important in comparison of the deflection of each separating cylinder.
- each of the two cylinders upstream and downstream separators are arcs of a circle.
- arcs of a circle can be perfectly concentric with a fictitious axis located at the intersection of the plane of symmetry of the upstream parts and downstream of the tablecloth that enters and leaves the device, with a plane parallel to these said parts.
- Figure 1 is a perspective view of a device according to the present invention.
- Figure 2 is a schematic view, in section vertical along the longitudinal plane of symmetry of the sheet, of the device shown in FIG. 1.
- Figure 3 is a schematic sectional view along line III-III of Figure 2 of a mode of implementation of the invention, the web not being in square.
- Figure 4 is a cross-sectional view to larger scale of an implementation mode of a separator cylinder according to the invention.
- Figures 4a and 4b are schematic views of two stages of implementation of the variant shown in Figure 4.
- Figure 5 is a schematic cross-sectional view of an embodiment of the variant shown in figure 4.
- Figure 6 is a cross-sectional view illustrating a method of manufacturing a cylinder separator used according to the invention.
- FIGs 1 and 2 There is shown in Figures 1 and 2 a sheet in paper 1 which is received on a first right cylinder 3 which ensures its maintenance so that means of cutting 5 can split the sheet 1 in order to make up seven parallel strips of paper and adjacent 7.
- the strips 7, once cut, are supported on the upper face of a cylinder upstream separator 9.
- the upstream separator cylinder 9, which is shown in detail in Figure 4, consists of a tubular element which is curved in the shape of an arc of circle of radius r, the concavity of this cylinder being facing upwards and being contained in a plane P vertical, preferably perpendicular to the plane of the tablecloth 1.
- the passage of parallel and adjacent strips 7 on the banana cylinder 9 ensures, in a setting mode in work, the rotational drive thereof and, in known manner, the separation and spacing of bands 7 so that at the outlet of the separating cylinder upstream 9 the paper strips 7 are no longer parallel but are angularly separated from each other at a given angle as a function of the curvature of the separator cylinder 9.
- Most of the time separator cylinders will be animated by a movement of rotation under the action of drive means, well that in certain modes of implementation training is achieved by moving the bands themselves.
- Tapes 7 are then received on the underside of a second separator cylinder downstream 9 'on which they are supported.
- the cylinder downstream separator 9 ' has the same diameter as the cylinder upstream separator 9 and is mechanically arranged from the same way as this one.
- This cylinder thus has a radius of curvature r ', its concavity being contained in a second plane P 'parallel to the plane P and being also directed upwards.
- the separator cylinder downstream 9 ' is arranged at a level lower than that of upstream separator cylinder 9 and all perpendicular lowered by any point A1, A2, ...
- An of the axis longitudinal VV 'or WW' of each of the cylinders separators on the longitudinal axis of the other cylinder separator has the same length.
- the cylinders upstream 9 and downstream 9 'separators have arrows respective f and f 'which are a function of the spacing e that we want to give to the bands 7.
- the length h 1 , h 2 , ... h n of each perpendicular A 1 B 1 , A 2 B 2 , ... A n B n lowered from the longitudinal axis vv 'of the separating cylinder 9 on the longitudinal axis ww 'of the other separating cylinder 9' has a constant value.
- the longitudinal distance a separating the first right cylinder 3, from the upstream separating cylinder 9 and the distance b separating the downstream separating cylinder 9 'from the second right cylinder 11, are large compared to the arrows f and f' of the separating cylinders 9 and 9 '.
- the separator cylinders upstream 9 and downstream 9 ' are in the form of arcs of circles of respective radii r and r '. These arcs are perfectly concentric with a fictitious longitudinal axis uu 'located at the intersection of the plane of symmetry Q of upstream 1 and downstream 1 ′ parts of the sheet which enter and coming out of the device, with an R plane perpendicular to the plane Q and parallel to these said parts.
- the curvature of the separating cylinders 9, 9 ' is obtained by deformation of straight cylinders monoblocks to which one applies, at their ends respective, a moment of bending.
- FIG. 4 thus represents a mode of realization in which the curvature of each of the upstream and downstream cylinders is obtained by deformation of a straight cylinder element.
- a separator cylinder 9 is consisting of a metallic tubular element, the wall has a sufficient thickness of the order of 4 at 5 mm, avoiding any ovalization during work under the effect of the stressing forces on the sheet.
- Each end of the tubular element 9 is embedded in a sleeve 17 which is disposed at inside two bearings 19 themselves recessed in a support element 21.
- the tubular member 9 is straight, and then apply as shown in schematic figure 4b, a moment of rotation M at each of the support elements 21, so as to give the tubular element 9 the appropriate curvature.
- the plaintiff has thus established that this mode of implementation work allowed to obtain, for each of the cylinders upstream 9 and downstream 9 'separators a curvature perfectly regular.
- the present invention thus makes it possible to carry out the cutting a set of strips beforehand pre-printed and spread apart with a knife single transverse.
- 25 tie rods allow to clamp the chamfered surface 23 by compared to a plan 27 provided for this purpose on the machine.
- the separating cylinders of the following device the invention may consist of massive elements metallic or not.
- the separator cylinders will advantageously produced in tubular form.
- Such separating cylinders can also be made from composite materials, i.e. of materials made of resin reinforced by fibers, especially glass, carbon or "Kevlar".
- FIG 6 such a setting mode of the invention.
- a cylindrical mandrel 29 on which one comes to wind fibers consisting in particular of carbon, "Kevlar" or glass.
- the cohesion between these fibers is provided by a resin, in particular an epoxy resin.
- a resin in particular an epoxy resin.
- pre-coated fibers of a polymer which, after passing through a nozzle heating, will regain their adhesive character, adhesive character which will ensure the bonding of the fibers between them.
- the fibers will be wound on the mandrel 29 at an angle ⁇ relative to the longitudinal axis vv 'thereof.
- the inclination ⁇ of fibers relative to the axis of the mandrel 29 will allow control the direction of mechanical characteristics preferential of the sleeve thus formed.
- fibers inclined on the axis longitudinal vv 'with a small angle ⁇ will give the sleeve preferably axial mechanical strength while fibers inclined at an angle ⁇ close to 90 ° will give the sleeve 29 thus formed a radial preferential resistance.
- separator cylinders are used of elements rotatably mounted about their axis longitudinal.
- separator cylinders it is also possible to use cylinders dividers that are attached at their ends, the moving the cut strips then by friction on the external surface of these.
- Such mode of implementation of the invention allows, in some cases to simplify the mechanical constitution of the system used, to the detriment of course wear separator cylinders.
Landscapes
- Paper (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Description
Claims (10)
- Dispositif de séparation de bandes, notamment de bandes de papier ou de carton, obtenues après la refente d'une nappe (1), du type comportant deux cylindres séparateurs courbes, ou "cylindres bananes" (9,9'), à savoir un cylindre amont supérieur (9) et un cylindre aval inférieur (9'), la nappe (1) prenant appui sur la partie supérieure du cylindre amont (9) et sur la partie inférieure du cylindre aval (9'), dans lequel les deux cylindres séparateurs amont (9) et aval (9') sont de même diamètre et leurs axes longitudinaux (vv',ww') sont contenus dans des plans parallèles (P,P') sensiblement verticaux perpendiculaires aux surfaces respectives de la nappe en entrée (1) et en sortie (1') des deux cylindres séparateurs, 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 (A1, A2, ...Am) de l'axe longitudinal (vv',ww') de chacun des cylindres, sur l'axe longitudinal (ww',vv') de l'autre cylindre, est de même longueur, caractérisé en ce que les cylindres séparateurs (9,9') sont constitués d'éléments rectilignes et monoblocs aux extrémités desquels est appliqué un moment de flexion (M) de façon à leur conférer une courbure (2,2') régulière.
- Dispositif suivant la revendication 1 caractérisé en ce que les cylindres séparateurs (9,9') sont constitués d'éléments tubulaires.
- Dispositif suivant l'une des revendications précédentes caractérisé en ce que les extrémités des cylindres séparateurs (9,9') sont encastrées dans des paliers de roulement (17,19).
- Dispositif suivant la revendication 3 caractérisé en ce que les paliers de roulement (17,19) sont solidarisés de blocs rigides (21) comportant une face (23) inclinée par rapport à l'axe (vv',ww') du cylindre séparateur , d'un angle (α) dont on souhaite faire tourner chacun des blocs (21) afin de courber le cylindre séparateur, et de moyens de bridage (25), aptes à appliquer cette surface inclinée (23) contre une surface (27) de la machine.
- Dispositif suivant l'une des revendications précédentes caractérisé en ce que les éléments de la nappe en entrée (1) et en sortie (1') sont en appui respectifs sur des cylindres droits (3,3'), respectivement disposés en amont et en aval des cylindres séparateurs (9,9'), les distances respectives de ces cylindres droits (3,3') auxdits cylindres séparateurs amont (9) et aval (9') étant importantes en comparaison de la flèche (f,f') de chaque cylindre séparateur (9,9').
- Dispositif suivant l'une des revendications précédentes caractérisé en ce que les courbures de chacun des deux cylindres séparateurs amont (9) et aval (9') sont constituées par des arcs de cercle.
- Dispositif suivant la revendication 6 caractérisé en ce que lesdits arcs de cercle sont parfaitement concentriques à un axe fictif (uu') situé à l'intersection du plan de symétrie (Q) des parties amont (1) et aval (1') de la nappe qui entrent et qui sortent du dispositif, avec un plan (R) parallèle à ces dites parties (1,1).
- Dispositif suivant l'une des revendications précédentes caractérisé en ce que les cylindres séparateurs (9,9') sont constitués, au moins en périphérie, d'enroulements de fibres liés entre eux au moyen d'un liant durcissable.
- Dispositif suivant la revendication 8 caractérisé en ce que les enroulements sont inclinés par rapport à l'axe longitudinal (vv',ww') des cylindres séparateurs.
- Dispositif suivant l'une des revendications 8 ou 9 caractérisé en ce que chaque cylindre séparateur (9,9') est revêtu, sur sa périphérie, d'une résine durcissable apte à subir une rectification sans porter atteinte à l'intégrité mécanique des enroulements.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9506708A FR2735117B1 (fr) | 1995-06-07 | 1995-06-07 | Dispositif separateur notamment pour nappe de papier ou de carton |
FR9506708 | 1995-06-07 | ||
PCT/FR1996/000867 WO1996040580A1 (fr) | 1995-06-07 | 1996-06-07 | Dispositif separateur notamment pour nappe de papier ou de carton |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0773900A1 EP0773900A1 (fr) | 1997-05-21 |
EP0773900B1 true EP0773900B1 (fr) | 2000-05-10 |
Family
ID=9479705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96922080A Expired - Lifetime EP0773900B1 (fr) | 1995-06-07 | 1996-06-07 | Dispositif separateur notamment pour nappe de papier ou de carton |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0773900B1 (fr) |
DE (1) | DE69608209D1 (fr) |
FR (1) | FR2735117B1 (fr) |
WO (1) | WO1996040580A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113184598A (zh) * | 2021-04-02 | 2021-07-30 | 湖州点彩智能科技有限公司 | 被动式布匹均匀张紧机构及验卷机 |
EP4177194A1 (fr) * | 2021-11-05 | 2023-05-10 | GOEBEL Schneid- und Wickelsysteme GmbH | Dispositif d'épandage |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE305092C (fr) * | ||||
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 |
CH619998A5 (fr) * | 1976-07-14 | 1980-10-31 | Windel Hermann Gmbh & Co | |
DE2632022A1 (de) * | 1976-07-16 | 1978-01-19 | Dornbusch Maschf | Vorrichtung zum erzeugen eines gleichmaessigen spannungszustandes in einer warenbahn |
FI69440C (fi) * | 1983-07-22 | 1986-02-10 | Waertsilae Oy Ab | Anordning foer utbredning av bana |
US4566154A (en) * | 1983-08-02 | 1986-01-28 | Scott Paper Company | Nonwoven web spreader |
-
1995
- 1995-06-07 FR FR9506708A patent/FR2735117B1/fr not_active Expired - Fee Related
-
1996
- 1996-06-07 EP EP96922080A patent/EP0773900B1/fr not_active Expired - Lifetime
- 1996-06-07 WO PCT/FR1996/000867 patent/WO1996040580A1/fr active IP Right Grant
- 1996-06-07 DE DE69608209T patent/DE69608209D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2735117B1 (fr) | 1997-07-25 |
FR2735117A1 (fr) | 1996-12-13 |
EP0773900A1 (fr) | 1997-05-21 |
WO1996040580A1 (fr) | 1996-12-19 |
DE69608209D1 (de) | 2000-06-15 |
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