EP4605331A1 - Machine de pliage ou d'interpliage de feuilles en papier ou en matériau similaire - Google Patents

Machine de pliage ou d'interpliage de feuilles en papier ou en matériau similaire

Info

Publication number
EP4605331A1
EP4605331A1 EP23809295.1A EP23809295A EP4605331A1 EP 4605331 A1 EP4605331 A1 EP 4605331A1 EP 23809295 A EP23809295 A EP 23809295A EP 4605331 A1 EP4605331 A1 EP 4605331A1
Authority
EP
European Patent Office
Prior art keywords
stack
folding
interfolding
group
forming
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.)
Pending
Application number
EP23809295.1A
Other languages
German (de)
English (en)
Inventor
Daniele Dettori
Daniele Damiani
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.)
Valmet Tissue Converting Srl
Original Assignee
Valmet Tissue Converting 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 Valmet Tissue Converting Srl filed Critical Valmet Tissue Converting Srl
Publication of EP4605331A1 publication Critical patent/EP4605331A1/fr
Pending legal-status Critical Current

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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/24—Interfolding sheets, e.g. cigarette or toilet papers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3054—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers
    • B65H31/3063—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers by special supports like carriages, containers, trays, compartments, plates or bars, e.g. moved in a closed loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/32—Auxiliary devices for receiving articles during removal of a completed pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/04—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, presence of faulty articles
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/54—Auxiliary process performed during handling process for managing processing of handled material
    • B65H2301/542—Quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/10—Mass, e.g. mass flow rate; Weight; Inertia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/20—Volume; Volume flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/84—Quality; Condition, e.g. degree of wear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2551/00—Means for control to be used by operator; User interfaces
    • B65H2551/20—Display means; Information output means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2551/00—Means for control to be used by operator; User interfaces
    • B65H2551/20—Display means; Information output means
    • B65H2551/24—Sound or voice generating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/21—Variable resistances, e.g. rheostats, potentiometers or strain gauges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/42—Cameras
    • 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
    • B65H2701/19—Specific article or web
    • B65H2701/1924—Napkins or tissues, e.g. dressings, toweling, serviettes, kitchen paper and compresses

Definitions

  • the present invention relates to a folding or interfolding machine for forming stacks of folded or interfolded sheets , in particular, but not exclusively, made of paper material .
  • the invention furthermore , relates to a method for forming stacks of folded or interfolded sheets .
  • the machines used in the paper industry form stacks of sheets which are folded according to a desired folding or interfolding configuration .
  • these machines starting from a continuous web- shaped material , general ly paper, continuously and in sequence cut single sheets of predetermined si ze which are then folded or interfolded one another by a couple of rolls , which in j argon are called folding rolls .
  • the typologies of folded or interfolded products which can be obtained by the folding or interfolding machines of known type are di f ferent and generally comprise towels , tissues , napkins , tissue-papers , etc .
  • Each typology of product furthermore , can have several versions which di f fer from the others of the same array for the paper basis weight , for the si ze of each sheet , for the number of interfolded sheets that are contained in a stack and the typology and for the number of folds of each sheet.
  • the folding or interfolding configurations comprise "V"- folds, used in particular for the tissue-papers, or the tissues, the "M” or "W” or “L” folds that are used, in particular, for the towels.
  • interfolding machines which carry out a "V" fold are fed with two different continuous webs of paper from which two distinct flows of sheets are obtained.
  • Examples of this type of machines, which in jargon are called “single-fold" are described in EP3746386, EP0982255, EP0982256.
  • EP2462044 is, instead, described a typology of interfolding machines which are able to carry out many typologies of products, for example "V"-folded products but also "M"- or "W"-folded products.
  • the control unit 300 can be , furthermore, adapted to assign a value Qi , to the quality of the forming stack 50 as much as the shape of the same can be superimposed to the reference shape Q* .
  • the control unit 300 can be adapted to emit an alarm signal , for example an audio signal , or a video signal .
  • control unit 300 can be, in particular, adapted to define the aforementioned parameter of quality Qi by a software which detects at least one parameter of the forming stack 50 , or of the finished stack 50 ' , selected among : stack height, stack density, wrong folding of the sheets , wrong interfolding of the sheets .
  • a software which detects at least one parameter of the forming stack 50 , or of the finished stack 50 ' , selected among : stack height, stack density, wrong folding of the sheets , wrong interfolding of the sheets .
  • One or more of these parameters of the forming stack 50 , or of the finished stack 50 ' can be used together or in mutual relation with the value of quality Qi or the di fference between Qi and the reference image Q* .
  • the aforementioned software can be an IA algorithm such as a neural network and/or a software of machine learning.
  • the software can be , therefore, adapted to determine the aforementioned parameters of the forming stack 50 , or of the finished stack 50 ' in addition to a parameter of quality computed according to the IA algorithms described above .
  • the parameter of quality Qi and/or the parameters of the forming stack 50 , or of the finished stack 50 ' can be used to calculate or to dynamically change, i . e . in real time , the reference value F* both in the case that F* is a numerical value both i f F* is a function .
  • the control unit 300 it is possible to adj ust and to automatically move the position and/or the velocity and/or the acceleration of the separation group 20 and/or of the transfer group 30 in function of the value del parameter Qi and/or of the parameters of the forming stack 50 , or of the finished stack 50 ' calculated by the control unit 300 starting from the or each image acquired by the image acquisition device 70 .
  • i f the density of the forming stack is too high, it is possible to operate the separation group 20 and/or the transfer group 30 in order to increase the growing space available to the stack thus decreasing as a consequence the density of the forming stack 50 .
  • movement of the separation group 20 and of the trans fer group 30 it is intended the movements along the forming direction 150 , substantially vertical or along the direction going from and towards the folding rolls la, lb, the hori zontal movements adapted to introduce or withdraw the separating elements 21a and/or the second separating elements 21b and/or the first transfer table 31a and/or the second transfer table 31b from the forming stack 50 or from the finished stack 50 ' or a combination of these movements .
  • the machine 100 at the discharge zone 60 , can, furthermore, provide a discharge device 80 , for example a conveyor belt , or a chute , configured to move along a displacement direction 180 , preferably coincident with the aforementioned vertical direction 150 , from and towards the trans fer group 30 , in particular from and towards the trans fer tables 31a and 31b .
  • a displacement device 90 can be provided operatively connected to the aforementioned discharge device 80 and configured to move the discharge device 80 same along the aforementioned displacement direction 180 .
  • the displacement device 90 can be adapted to engage the discharge device 80 at least at one side 81 in such a way to cause the same to be moved in a guided way along the aforementioned displacement direction 180 .
  • the displacement device 90 can provide a motor 95 which causes a rotation of a drive pulley 91 on which a transmission belt 96 is mounted that ends at an idler pulley 92 .
  • the belt 96 can be engaged by an engagement device 97 to the aforementioned discharge device 80 .
  • a supplementary guide device such as for example a linear guide upon which a skid slides , can be provided that cannot be seen in figure for clarity reason, that is constrained to the transmission belt 96 and engaged to the discharge device 80 to guide the same along the aforementioned displacement direction 180 .
  • the first and second displacement devices 121a and 121b adapted to move the first and second pluralities of separation members 21a and 21b can provide a respective first movable support 122a and 122b, each of which slidingly mounted on a respective linear guide 123a and
  • the aforementioned linear guides 123a and 123b are constrained to respective second supports 126a and 126b slidingly mounted along second sliding directions 127a and 127b, for example by second skids 128a and 128b engaged to respective second linear guides 129a, 129b, in particular vertically oriented .
  • the motion of the second skids 128a and 128b can be , for example , obtained by respective belts 140a and 140b respectively running over a determined number of pulleys 141a and 141b, at least one of which is motorized .
  • the motion of the second skids 128a and 128b is , furthermore, guided by engaging the same on the linear guides 129a and 129b .
  • the first and second supplementary displacement devices 131a and 131b which move the first and second transfer tables 31a and 31b can provide a respective first movable support 132a and 132b, each of which slidingly mounted on a respective linear guide 133a and 133b to slide along a respective first sliding direction 134a and 134b, in particular by a respective first skid 135a and 135b .
  • the aforementioned linear guides 133a and 133b are constrained to respective second supports 136a and 136b slidingly mounted along second sliding directions 137a and 137b, for example by respective second skids 138a and 138b engaged to respective second linear guides 139a and 139b .
  • These can, for example , coincide , respectively, with the aforementioned linear guides 129a and 129b, or they can be di fferent from these as diagrammatically shown in figure 10 .
  • the motion of the aforementioned second skids 138a and 138b along the respective linear guides 139a and 139b can be obtained by a system with belt and pulleys , for example , but not necessarily, coincident with the belts 140a and 140b and with the respective pulleys 141a and 141b described above with reference to the motion of the second skids 128a and 128b along the respective linear guides 129a and 129b .
  • the or each detection device 40 can be positioned at a detection position arranged between the second support 126a and/or 126b and the second skid 128a and 128b of the first and second displacement devices 121a and 121b, and/or between the second support 136a and/or 136b and the second skid 138a and 138b of the first and second supplementary displacement devices 131a and 131b .
  • the detection device 40 can be a thin film pressure sensor, or a thin film force sensor, consisting, in practice, of a strip of a material sensitive to pressure or force .
  • a first, a second, a third and a fourth detection device 40a-40d can be provided positioned, respectively, at the support surfaces 25a, 25b, 35a and 35c .
  • the or each detection device 40 can be housed within a respective seat 27 made at a respective separation element 21a, 21b, and/or at a respective seat 37 made at a respective forming table 31a, 31b, in such a way not to protrude from the surface of the aforementioned support surfaces 25a-25d, or 35a-35c, or anyway, to protrude from the same without , anyway, substantially changing the geometry .
  • the detection device 40 has , advantageously, a width equal to , or less than, the width of the support surface 25a, 25b, 35a, 35b .
  • the detection device 40 can directly detect the force or the pressure exerted by the forming stack 50 or by the finished stack 50 ' without taking into account the mechanical construction of the displacement devices 121a and 121b and/or the supplementary displacement devices 131a and 131b .
  • the detection device 40 produces , in particular, an electrical signal which is proportional to the force or pressure exerted by the stack on the support surface 25a and/or 25b and/or support surface 35a and/or 35b .
  • the electric signal can be processed by the control unit 300 to determine the value of the detected force Fi .
  • the machine 100 will comprise also a second feeding group configured to feed towards the first and second folding or interfolding rolls a second plurality of sheets along a respective feeding path .
  • a second cutting group will be provided configured to cut a second continuous web of a web-shaped material into the second plurality of sheets .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

Machine de pliage ou d'interpliage (100) pour former des piles (50) d'un nombre prédéterminé de feuilles (5) comprenant un premier et un second rouleau de pliage ou d'interpliage (la, lb), agencés pour tourner autour d'axes de rotation respectifs (101a, 101b) pour plier ou interplier les feuilles (5) selon une configuration de pliage ou d'interpliage prédéterminée, obtenir une pile de formation de feuilles pliées ou interpliées (50) qui croît en hauteur le long d'une direction de formation prédéterminée (150). Un groupe de séparation (20) est en outre proposé pour séparer une pile finie (50') d'une pile de feuilles de formation suivante (50). Un groupe de transfert (30) est également proposé pour transférer la pile finie (50') de feuilles pliées ou interpliées vers une zone de décharge (60). Au moins l'un entre le groupe de séparation (20) et le groupe de transfert (30) comprend au moins un dispositif de détection (40) pour détecter la force exercée par la pile de formation, ou par la pile finie (50, 50') sur le groupe de séparation (20) ou sur le groupe de transfert (30).
EP23809295.1A 2022-10-21 2023-10-20 Machine de pliage ou d'interpliage de feuilles en papier ou en matériau similaire Pending EP4605331A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT202200021795 2022-10-21
PCT/IB2023/060619 WO2024084455A1 (fr) 2022-10-21 2023-10-20 Machine de pliage ou d'interpliage de feuilles en papier ou en matériau similaire

Publications (1)

Publication Number Publication Date
EP4605331A1 true EP4605331A1 (fr) 2025-08-27

Family

ID=84943603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23809295.1A Pending EP4605331A1 (fr) 2022-10-21 2023-10-20 Machine de pliage ou d'interpliage de feuilles en papier ou en matériau similaire

Country Status (2)

Country Link
EP (1) EP4605331A1 (fr)
WO (1) WO2024084455A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202727397U (zh) * 2012-07-06 2013-02-13 陆德昌 一种用于加工薄片材料的折叠装置
WO2017001394A2 (fr) * 2015-06-29 2017-01-05 Koenig & Bauer Ag Dispositifs de sortie et procédé de réglage des dispositifs de sortie
CN106629220A (zh) * 2015-10-28 2017-05-10 金红叶纸业集团有限公司 用于分隔层叠纤维制品的装置及方法
IT201800002342A1 (it) * 2018-02-02 2019-08-02 Perini Fabio Spa Macchina interfogliatrice con diti separatori adiacenti a rispettivi rulli interfogliatori
CN209177718U (zh) * 2018-11-21 2019-07-30 江门市雅枫纸业有限公司 一种纸巾折叠装置

Also Published As

Publication number Publication date
WO2024084455A1 (fr) 2024-04-25

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