EP2676906B1 - Dispositif de déchirement rapide d'une bande dans une machine de rembobinage - Google Patents

Dispositif de déchirement rapide d'une bande dans une machine de rembobinage Download PDF

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Publication number
EP2676906B1
EP2676906B1 EP12172520.4A EP12172520A EP2676906B1 EP 2676906 B1 EP2676906 B1 EP 2676906B1 EP 12172520 A EP12172520 A EP 12172520A EP 2676906 B1 EP2676906 B1 EP 2676906B1
Authority
EP
European Patent Office
Prior art keywords
core
paper
conveyor
channel
strip
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.)
Active
Application number
EP12172520.4A
Other languages
German (de)
English (en)
Other versions
EP2676906A1 (fr
Inventor
Giovanni Gambini
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.)
Gambini International SA
Original Assignee
Gambini International SA
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Filing date
Publication date
Application filed by Gambini International SA filed Critical Gambini International SA
Priority to EP12172520.4A priority Critical patent/EP2676906B1/fr
Publication of EP2676906A1 publication Critical patent/EP2676906A1/fr
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Publication of EP2676906B1 publication Critical patent/EP2676906B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/002—Precutting and tensioning or breaking
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/345—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2238—The web roll being driven by a winding mechanism of the nip or tangential drive type
    • B65H19/2269—Cradle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B65H19/267—Cutting-off the web running to the wound web roll by tearing or bursting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B65H19/283—Attaching the leading end of the web to the replacement web-roll core or spindle by applying adhesive to the core
    • 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
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/418—Changing web roll
    • B65H2301/4181—Core or mandrel supply
    • B65H2301/41812—Core or mandrel supply by conveyor belt or chain running in 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51532—Blade cutter, e.g. single blade cutter

Definitions

  • the present invention relates to a rapid tearing device of a strip in a rewinding machine.
  • rewinding machines which wind the continuous paper coming from a large paper roll, onto cores.
  • rewinding machines For the production of paper rolls, in fact, there is a feeding of a continuous strip of paper material along a pre-defined route. It should be noted that the continuous strip, after starting its unwinding in a certain course, encounters a punching group whereby it is provided with transversal perforation lines to facilitate breakage and consequently the tearing of short sections of paper having a predetermined length.
  • the continuous strip therefore contains a series of transversal perforated weakening lines, parallel to each other and spaced at regular intervals.
  • the continuous strip thus treated is introduced into the rewinding machine, where it is wound onto a cardboard supporting core, tubular in form, externally having a pre-determined portion of glue along a generatrix of the core.
  • the rotation of the core by means of a group of winding rolls causes the winding of the continuous strip until the respective roll or "log" of wrapping paper has been formed.
  • a piece of the strip is joined to the core by means of glue positioned on the latter.
  • the tail of the log must be separated thus contemporaneously creating the head of a new log to be formed.
  • the separation operation of the continuous strip is effected, for example, by means of tearing which causes the breakage of the continuous strip along one of the perforated lines produced on the paper and mentioned above.
  • This separation can be effected in various ways and using various devices.
  • the tearing action of the continuous strip can be effected, for example, by varying the rotation rate of the winding rolls so as to create a section of strip sufficient for causing its breakage along a respective transversal perforated line.
  • the tearing of the continuous strip is effected by the high-pressure blowing of a fluid against the perforated line in order to cause its breakage.
  • Comb- or buffer-elements are also envisaged, which intervene on the strip near a perforation line and block the paper on the upper winding cylinder in order to effect the above-mentioned separation.
  • EP 2422943 A1 refers to a device according to the preamble of claim 1.
  • the general objective of the present invention is to solve the above-mentioned drawbacks of the known art in a simple, economical and particularly functional way.
  • Another objective of the invention is to provide device for the rapid tearing of a strip in a rewinding machine which does not cause folds on the paper which is being wound onto the core.
  • Yet another objective of the invention is to provide a device for the rapid tearing of a strip in a rewinding machine which causes the least possible waste of paper being wound before the paper adheres to the glue carried by the core.
  • a further objective of the present invention is to provide a device for the rapid tearing of a strip in a rewinding machine which does not use buffers or, in any case, does not exploit the combined action with the upper winding roll.
  • a device has been conceived for the rapid tearing of a strip in a rewinding machine having the characteristics indicated in the enclosed claims.
  • this substantially illustrates the core of a rewinding machine in which a rapid tearing device of a continuous strip of paper according to the invention, is positioned.
  • the rewinding machine at which a continuous strip of paper 11 arrives essentially comprises an area in which the rolls or logs 12 of paper are prepared.
  • the end of the conveyor 13 faces a channel 16 defined by a series of cradles 17 integral with the structure of the rewinder.
  • An upper winding roll 18 is positioned above the channel 16, or cradles 17, whereas a lower winding roll 19 is situated almost at the end of the cradles 17.
  • a third oscillating roll 20 is positioned above the lower winding roll 19, cooperating with it and with the upper winding roll and acting as a press with a variation in the dimension of the log 12 being formed between the three mentioned rolls 18, 19 and 20.
  • the cores 15, carried by the conveyor 13 by means of the pushers 14, are previously provided with sections of glue 21, situated in correspondence with the area where the finger on a watch indicates nine.
  • a device according to the present invention is situated in a similar arrangement of the rewinder.
  • a pair of arms 22 are in fact envisaged, only one of which is shown, situated in opposite positions with respect to the ends of the rolls.
  • the two arms 22 carry a cross-piece 23, for example tubular, on which a blade 24 is positioned, arranged transversally with respect to the advancing of the paper, which has the same size as the width of the mentioned rolls 18, 19 and 20 (size of the bench).
  • the blade 24 can be moved by means of actuators, between a stand-by position and an engagement position on a core 15, when this core 15 is discharged by the conveyor 13 and introduced into the channel 16 so as to block, between the core 15 and blade 24, the paper 11 which is being unwound and passing through this point.
  • the arms 22 oscillate around central pins 25 and two spring cylinders 27 are connected to these at a first end, in further pins 26, the spring cylinders 27 being hinged in turn at the other end of the arms by means of pins 28 to the structure of the rewinder.
  • the cylinders 27 act as elastic means and operate so that the arms are pulled back according to the arrow 29 of figure 1 , i.e. moved away from the upper roll 18 so that the blade 24 does not interfere with one of the cores 15 pushed forwards by the pushers 14 of the conveyor 13, to be sent inside the channel 16. Furthermore, they normally keep the feelers 30 in contact with a cam wheel 31.
  • the device of the invention also envisages that the arms 22 oscillate by means of a cam wheel - movable feeler coupling in synchronism with a discharge introducer 34 of a core 15 from the conveyor 13 towards the channel 16.
  • the cam wheel - movable feeler coupling envisages that a feeler 30 be positioned at the end of the oscillating arms 22, opposite to that where the blade 24 is situated.
  • the feeler 30 is kept in contact with an outer surface of a cam wheel 31 positioned on the same axis 33 as a toothed wheel 32 which activates the movement of the conveyor 13. In this way the above-mentioned actuating means of the blade 24 are produced.
  • the cam wheel 31, or toothed wheel 32 carries at least one introducer 34 which discharges the core 15 carried by the pushers 14 of the conveyor 13 and introduces or inserts it at the inlet of channel 16.
  • the paper 11 is also pressed between the walls in contact with each other, and stops.
  • the paper 11 is torn in the transversal perforated line 37, closest to the core 15, due to the strong deceleration it undergoes as a result of the pressure of the core 15 on the blade 24 which has stopped in the maximum proximity position towards the conveyor 13.
  • the log 12, in formation is freed and can be removed from its grip between the rolls 18, 19 and 20.
  • the head of the paper is created, which will be wound around the core 15 which is thus introduced into the channel 16.
  • Figure 4 shows how, by continuing the introduction of the core 15 into the channel 16 by means of the pusher 34, the lengths of glue 21, i.e. the glue, are put in contact with the paper 11 just before the head of the paper separated by the device of the invention.
  • Figure 5 shows a subsequent step, wherein the core 15, with the respective glued paper 11, is made to roll into the channel 16 by the action of the upper roll 18, to be positioned between the rolls 18, 19 and 20 of the rewinder to produce another log 12.
  • the originality of this device consists in the fact that, as in previous devices, there is no specific device (a buffer, for example) which slows down the paper and tears it in the point closest to the perforation, acting on the upper winding roll. It is, in fact, the same core 15 which, in collaboration with the blade 24 situated near the paper 11, grips the paper and tears it.
  • a buffer for example
  • Figure 1 shows the rewinding machine and the device of the invention appears in stand-by, whereby the introducer 34 does not act and the blade 24 is raised, far from the cores 15 and from the paper 11.
  • the core 15 is in an exchange phase, the introducer 34 is adjacent to it and the cam portion 35 of the cam wheel 31 is about to come into contact with the feeler 30 to make the arms 22 oscillate.
  • the introducer 34 is in movement and acts on the core 15, the cam portion 25 moves the arms 22 and causes the blade 24 to descend and block the paper 11 which is torn in the closest point to the perforation after the core 15.
  • figure 5 illustrates more clearly how the log 12 formed between the rolls leaves the same and the wound core 15 is brought to the winding phase. It is also evident that the introducer 34 returns to the low disengagement position and another core 15 is moved forwards.
  • the device of the invention is extremely simple and the capturing strip of the paper is extremely short and reduced to the minimum.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (5)

  1. Dispositif de déchirage rapide d'une bande dans un enrouleur pour l'enroulement de papier autour d'un mandrin (15) pour produire un rouleau (12), dans lequel ledit enrouleur comprend une zone de formation du rouleau (12) en amont de laquelle se trouve un convoyeur (13) muni de poussoirs (14) pour déplacer les mandrins (15) vers l'avant dans un canal (16) défini par une série de berceaux (17) intégrés à la structure de l'enrouleur, et par un cylindre d'enroulement supérieur (18) qui se situe au-dessus du canal (16), dans lequel le cylindre d'enroulement supérieur (18) collabore avec un cylindre d'enroulement inférieur (19) positionné presque à l'extrémité finale des berceaux (17), tandis qu'un troisième cylindre, ou cylindre oscillant, (20) se situe au-dessus du cylindre d'enroulement inférieur (19) et agit comme une presse avec la variation de la dimension du rouleau (12) qui est formé entre les trois cylindres mentionnés (18, 19 et 20), ledit dispositif de déchirage rapide ayant la dimension de la largeur des cylindres (18, 19 et 20), qui peuvent être déplacés par des actionneurs (31, 35 ; 30, 22, 25) entre une position de repos et une position d'engagement sur un mandrin (15) quand le mandrin (15) est déchargé dudit convoyeur (13) au moyen d'un dispositif d'introduction (34) et introduit dans le canal (16), en bloquant ainsi, entre le mandrin (15) et ledit dispositif de déchirage rapide (24), le papier (11) qui est en train d'être déroulé afin de le déchirer dans le point de perforation transversal après ledit contact (en 37), caractérisé en ce que ledit dispositif de déchirage rapide consiste en une lame (24), dans lequel ladite lame (24) est positionnée sur une extrémité de bras (22) qui sont montés sur charnière de façon centrale (en 25) et mis en oscillation au moyen d'un accouplement roue à came (31) - palpeur (30) qui se déplace en synchronisme avec ledit dispositif d'introduction de déchargement (34) d'un mandrin, dudit convoyeur (13) vers ledit canal (16).
  2. Dispositif selon la revendication 1, caractérisé en ce que lesdits bras (22) portent ladite lame (24) à une première extrémité et un palpeur (30) à l'autre extrémité, maintenu en contact avec une roue à came (31) dudit accouplement roue à came (31) - palpeur (30) par un moyen de contraste élastique (27).
  3. Dispositif selon la revendication 2, caractérisé en ce que ledit moyen de contraste élastique est constitué de vérins à ressort (27).
  4. Dispositif selon la revendication 1, caractérisé en ce que ledit dispositif d'introduction (34) comporte une roue dentée (32) intégrée qui met en mouvement le convoyeur (13).
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que ladite roue à came (31) comprend une partie formant came (35) qui fait saillie vers l'extérieur de façon radiale.
EP12172520.4A 2012-06-19 2012-06-19 Dispositif de déchirement rapide d'une bande dans une machine de rembobinage Active EP2676906B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12172520.4A EP2676906B1 (fr) 2012-06-19 2012-06-19 Dispositif de déchirement rapide d'une bande dans une machine de rembobinage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12172520.4A EP2676906B1 (fr) 2012-06-19 2012-06-19 Dispositif de déchirement rapide d'une bande dans une machine de rembobinage

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EP2676906A1 EP2676906A1 (fr) 2013-12-25
EP2676906B1 true EP2676906B1 (fr) 2017-08-23

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EP12172520.4A Active EP2676906B1 (fr) 2012-06-19 2012-06-19 Dispositif de déchirement rapide d'une bande dans une machine de rembobinage

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10427902B2 (en) 2016-03-04 2019-10-01 The Procter & Gamble Company Enhanced introductory portion for a surface winder
US10442649B2 (en) 2016-03-04 2019-10-15 The Procter & Gamble Company Surface winder for producing logs of convolutely wound web materials
US10427903B2 (en) 2016-03-04 2019-10-01 The Procter & Gamble Company Leading edge device for a surface winder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20030118A1 (it) 2003-04-28 2004-10-29 Fabio Perini Dispositivo e metodo per provocare lo strappo di nastri cartacei in macchine ribobinatrici
ITFI20060014A1 (it) * 2006-01-18 2007-07-19 Perini Fabio Spa Macchina ribobinatrice e metodo di avvolgimento per la produzione di rotoli
US8979012B2 (en) * 2007-07-27 2015-03-17 Chan Li Machinery Co., Ltd. Method and structure for separating the web material in a winding machine
IT1390602B1 (it) * 2008-07-10 2011-09-09 Biagiotti Apparato, e relativo metodo, per la trasformazione di materiale nastriforme.
TWI396657B (zh) * 2009-05-22 2013-05-21 Chan Li Machinery Co Ltd Thin paper winding device with planetary wheel breaking mechanism and its method of dialing tissue paper
IT1401682B1 (it) * 2010-08-27 2013-08-02 Gambini Int Sa Dispositivo di strappo di un nastro continuo in materiale cartaceo in alimentazione su macchine ribobinatrici, macchina ribobinatrice per la formazione di rotoli di materiale cartaceo munita di tale dispositivo e metodo di strappo di un nastro continuo in materiale cartaceo su macchine ribobinatrici.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
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