EP0171486B1 - Plieuse pour plier en accordéon des matériaux en feuilles - Google Patents

Plieuse pour plier en accordéon des matériaux en feuilles Download PDF

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Publication number
EP0171486B1
EP0171486B1 EP84830337A EP84830337A EP0171486B1 EP 0171486 B1 EP0171486 B1 EP 0171486B1 EP 84830337 A EP84830337 A EP 84830337A EP 84830337 A EP84830337 A EP 84830337A EP 0171486 B1 EP0171486 B1 EP 0171486B1
Authority
EP
European Patent Office
Prior art keywords
folding
roller
rollers
sheet
sheet material
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
EP84830337A
Other languages
German (de)
English (en)
Other versions
EP0171486A1 (fr
Inventor
Vittorio Rigoli
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.)
Rigoli Fime SpA
Original Assignee
Rigoli Fime SpA
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 Rigoli Fime SpA filed Critical Rigoli Fime SpA
Publication of EP0171486A1 publication Critical patent/EP0171486A1/fr
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Publication of EP0171486B1 publication Critical patent/EP0171486B1/fr
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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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/20—Zig-zag folders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11231—Fan-folded material or zig-zag or leporello

Definitions

  • This invention relates to a folding machine for folding sheet material in concertina fashion according to the first portion of claim 1.
  • Italian Patent specification No. 906.210 and 911.967 discloses such folding machines.
  • the Italian Patent No. 911.967 relates to a folding machine which comprises, as the above mentioned machine, three rollers.
  • the central lower roller is on contact, alternatively, with only one of the two upper rollers in turn and for this reason the lower roller is moved towards the right and towards the left, alternately.
  • EP-A-0037650 HARPER provides two pairs of folding rolls 5-7 and 4 ⁇ 6.
  • the incoming papers, which rests on a stationary plate 14, is addressed, by a swinging or rotating deflecting element 16 or 13, towards the right or towards the left.
  • the present machine is intended to enable sheet material such as paper to be folded in concertina fashion whilst being responsive to different kinds and thickness of paper sheets by utilizing the capabilities of electronic microprocessors.
  • a horizontal table TA is provided for feeding longitudinal sheets FO ( Figure 4) of material such as paper to be concertina folded to an inlet location and a feed means is provided in the form of a unidirectionally driving inlet roller RM 1 co-operating with associated idler rollers (or balls) RF' and RF 2 , these rollers serving to feed the sheets to an entry path or track CE.
  • NA 1 and NA 2 are sets of strongly tensioned endless bands extending around driving rollers RM 2 and RM 3 and around idler rollers RF 2 and RF 3 respectively, these bands being arranged at the folding station according to a specular symmetry about the plane of the intended direction of feed of the sheet material along the inlet path CE. Respective working runs of the bands NA 1 and NA 2 are arranged tangentially with respect to idler rollers RF 4 and RF 5 , these rollers RF 4 and RF 5 having respective tapered portions PE 1 and PE2 and toroidal guide grooves SC 1 and SC 2 to accommodate endless belts CN wound around a pair of lower rollers RM 4 and RF 6 .
  • the roller RM 4 is driven and its direction of rotation can be reversed and the roller RF 6 is an idler roller. Accordingly, the rollers RM 2 and RM 3 drive respectively the rollers RF 4 and RF 5 via the bands NA 1 and N A 2 .
  • Another roller RO is arranged to be driven in a direction which depends on the direction of rotation of the driving rollers RM 2 , RM 3 and RM 4 and is shiftable in said plane from an upper position (Figure 1) at the beginning of the operating cycle in order to direct the sheet material towards the band NA and a lower position, which is achieved after the beginning of the cycle, whilst continuing to rotate in the same direction as the roller RM 4 , in order not to hinder the formation of folds in the sheet material ( Figures 2 and 3).
  • Detecting means in the form of photoelectric cells CF 1 and CF 2 control the directions of rotation of the driving rollers RM 2 , RM 3 and RM 4 .
  • a photoelectric cell CF 3 is located adjacent to the entry path CE.
  • the driving roller RM' feeds the sheet FO towards the entry path CE until the sheet drops to the folding station to meet the rotating roller RO (which is in its upper position) so that the sheet is directed between the lower, working run of the band NA and the roller RF 5 and consequently the sheet is positively carried towards the photoelectric cell CF'.
  • a servocontrol causes the direction of rotation of the driving rollers RM 3 and RM 4 to be reversed, whilst the driving roller RM 1 continues to rotate always in the same initial direction. As can be seen from Figure 2, this has the effect of drawing the sheet material such as paper to form a loop to provide a first fold therein.
  • the photoelectric cell CF 3 mounted in the -entry path CE is instrumental in initiating the rotation of the rollers RM 2 , RM 3 , RM 4 and RO.
  • the present folding machine does not have stationary channels between which the pack of folded sheet material can slide during the folding operation as with a known machine; on the contrary, the "channels" are movable and consist of the belts CN and bands NA', NA 2 which accompany the material during the reciprocating movement whereby movement of the material is not hindered thereby inhibiting consequent jamming of the machine.
  • RF 5 permits a better performance to be obtained than that obtained with known folding machines, since the surfaces of the bands between the rollers can yield and permit the passage of folded paper packets presenting a significant thickness.
  • the choice of a second folding roller as provided in known folding machines for small sheets would force the second roller to lose its initial parallelism if a sheet is folded which presents a width less than that of the second roller. Consequently the pressure upon the paper would not be uniform and the operation would not be correct.
  • roller RO performs the important job of orientating correctly the leading border of the paper, so as to orientate the latter according to the required inlet or feed direction, without sensing the initial pre-bending that the paper may present in the opposite direction.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (10)

1. Plieuse pour plier en accordéon un matériau en feuille, la plieuse comprenant: des moyens pour amener le matériau le long d'un chemin (CE) aboutissant à un poste de pliage; un moyen directionnel pour diriger au départ l'extrémité avant de la feuille vers la droite ou vers la gauche; deux moyens de pliage mobiles alternativement vers la droite ou vers la gauche; un moyen pour supporter le papier plie'; et des moyens pour détecter les bords avant du matériau en feuille lorsqu'il progresse, afin de provoquer l'inversion de la commande d'un ensemble de rouleaux et bandes, pour produire les plis, caractérisée en ce que chacun des deux susdits moyens de pliage consiste en une bande annulaire sans fin (NA'; NA2) portée par une première et une deuxième paires de rouleaux (RF2―RM2, RM3-RF3), et en une troisième paire de rouleaux (RF4, RF5) en contact avec ladite bande sans fin (NA', NA2) en un emplacement situé entre les rouleaux correspondants; le moyen directionnel consiste en un rouleau (RO) qui est déplaçable verticalement depuis une première position, supérieure et active, jusqu'à une deuxième position, inférieure et non active, atteinte après que l'extrémité avant du papier a été dirigée ou vers la droite, ou vers la gauche, et en ce que ledit moyen de support de la feuille pliée consiste en un seul ensemble de courroies (CN), porté par une paire de rouleaux (RF6, RM4), dont la vitesse de translation est de préférence légèrement plus élevée que celle desdites bandes (NA1―NA2).
2. Plieuse selon la revendication 1, dans laquelle le mouvement rectiligne des parties inférieures des deux susdites bandes de pliage (NA1 et NA2) et le mouvement de la partie supérieure dudit ensemble de courroies (CN) supportant le matériau en feuille sont alternatifs et concomitants.
3. Plieuse selon les revendications 1 et 2, dans laquelle le mouvement de rotation du moyen directionnel (RO) est en concordance avec le mouvement rectiligne des parties inférieures des deux bandes de pliage (NA', NA2), c'est-à-dire que la rotation du rouleau directionnel (RO) s'effectue dans le même sens que la rotation des rouleaux de pliage (RF4, RF5).
4. Plieuse selon les revendications 1 à 3, dans laquelle la rotation du rouleau directionnel (RO), dans l'un ou l'autre sens de rotation, s'effectue lorsque ledit rouleau (RO) se trouve dans la première position ou position supérieure, afin de favoriser lors de la phase initiale le guidage du bord menant de la feuille à plier vers la droite ou vers la gauche, et ensuite ce rouleau (RO) est abaissé, avec ou sans rotation dans l'un ou l'autre sens, à une deuxième position, inférieure, pour laquelle il perd le contact de la feuille de papier, ladite feuille étant supportée par ladite série de petites courroies (CN) qui accompagnent le papier par un mouvement alternatif dans les deux sens opposés, d'abord dans un sens et ensuite dans l'autre sens, alternativement.
5. Plieuse selon la revendication 1, dans laquelle ledit moyen d'alimentation comporte un rouleau d'alimentation (RM') qui coopère avec des moyens fous (RF', RF2).
6. Plieuse selon la revendication 5, dans laquelle les moyens fous comportent des rouleaux ou billes fous.
7. Plieuse selon l'une quelconque des revendications précédentes, dans laquelle ladite troisième paire de rouleaux est constituée de rouleaux fous et l'une desdites première et deuxième paires de rouleaux sont des rouleaux d'entraînement.
8. Plieuse selon la revendication 7, comprenant en outre une quatrième paire de rouleaux (RM4, RF6), dont l'un est un rouleau entraîné et autour desquels passent des courroies sans fin (CN) destinées à aider au transport du matériau en feuille qui est amené depuis ledit passage jusqu'aux bandes sans fin respectives lorsque le pliage se déroule, lesdites courroies sans fin passant également dans des gorges de ladite troisième paire de rouleaux afin d'empêcher toute erreur de guidage de la feuille à plier.
9. Plieuse selon les revendications 1 à 8, dans laquelle lesdits moyens de détection des feuilles, sous la forme de cellules photo-électriques, sont placés au voisinage de chaque partie active desdites bandes sans fin.
10. Plieuse selon la revendication 9, dans laquelle lesdites cellules photo-électriques sont couplées à des microprocesseurs commandant la mise en action de la plieuse et qui comporte en outre un moyen (CF3), placé dans ledit passage d'alimentation, qui détecte l'arrivée de matériau en feuille afin de déclencher un cycle de fonctionnement.
EP84830337A 1984-05-08 1984-12-11 Plieuse pour plier en accordéon des matériaux en feuilles Expired EP0171486B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2083484 1984-05-08
IT8420834A IT1213165B (it) 1984-05-08 1984-05-08 Macchina automatica piegatrice a fisarmonica di fogli longitudinali.

Publications (2)

Publication Number Publication Date
EP0171486A1 EP0171486A1 (fr) 1986-02-19
EP0171486B1 true EP0171486B1 (fr) 1988-06-08

Family

ID=11172743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84830337A Expired EP0171486B1 (fr) 1984-05-08 1984-12-11 Plieuse pour plier en accordéon des matériaux en feuilles

Country Status (3)

Country Link
EP (1) EP0171486B1 (fr)
DE (1) DE3471917D1 (fr)
IT (1) IT1213165B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10016313B2 (en) 2014-06-30 2018-07-10 The Procter & Gamble Company Method for folding absorbent articles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1272680B (it) * 1993-09-24 1997-06-26 Rigoli F I M E S P A Dispositivo atto a guidare in modo sicuro nella direzione desiderata, in una macchina piegatrice di fogli, il lembo anteriore di un foglio da ripiegare piu' volte su se' stesso a fisarmonica, nella fase iniziale di piegatura, e macchina piegatrice dotata di tale dispositivo
JP5194245B2 (ja) * 2007-06-15 2013-05-08 オセ−テクノロジーズ・ベー・ヴエー 折り畳み装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227582C3 (de) * 1972-06-07 1979-11-15 Meteor-Siegen Apparatebau Paul Schmeck Gmbh, 5900 Siegen Vorrichtung zum Mehrfachfalten von Bogen aus Papier, Folien u.dgl
EP0037650A1 (fr) * 1980-03-31 1981-10-14 HARPER & TUNSTALL LIMITED Machines à plier en accordéon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10016313B2 (en) 2014-06-30 2018-07-10 The Procter & Gamble Company Method for folding absorbent articles

Also Published As

Publication number Publication date
IT1213165B (it) 1989-12-14
DE3471917D1 (en) 1988-07-14
IT8420834A0 (it) 1984-05-08
EP0171486A1 (fr) 1986-02-19

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