EP1375402A1 - Umwickelmaschine mit Mitteln zum axialen Ziehen des Wickeldorns - Google Patents

Umwickelmaschine mit Mitteln zum axialen Ziehen des Wickeldorns Download PDF

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Publication number
EP1375402A1
EP1375402A1 EP02425419A EP02425419A EP1375402A1 EP 1375402 A1 EP1375402 A1 EP 1375402A1 EP 02425419 A EP02425419 A EP 02425419A EP 02425419 A EP02425419 A EP 02425419A EP 1375402 A1 EP1375402 A1 EP 1375402A1
Authority
EP
European Patent Office
Prior art keywords
winding
mandrel
rewinding machine
mating
machine according
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
Application number
EP02425419A
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English (en)
French (fr)
Other versions
EP1375402B1 (de
Inventor
Giuseppe Acciari
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.)
A Celli Nonwovens SpA
Original Assignee
A Celli Nonwovens 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 A Celli Nonwovens SpA filed Critical A Celli Nonwovens SpA
Priority to DE60206479T priority Critical patent/DE60206479D1/de
Priority to AT02425419T priority patent/ATE305888T1/de
Priority to EP02425419A priority patent/EP1375402B1/de
Publication of EP1375402A1 publication Critical patent/EP1375402A1/de
Application granted granted Critical
Publication of EP1375402B1 publication Critical patent/EP1375402B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • 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
    • B65H2515/50—Vibrations; Oscillations

Definitions

  • the invention relates to a rewinding machine for the production of reels of web wound on winding mandrels, e.g. paper, tissue paper, non-woven material and similar products in sheet or tape form. More particularly, the invention relates to a peripheral rewinding machine, of the type comprising a winding cradle, formed e.g. by two winding rollers, on which a reel under formation rests, and a pair of mating centers carried by mobile slides which engage the ends of the winding mandrel and are lifted gradually from the winding cradle formed by the winding rollers.
  • a winding cradle formed e.g. by two winding rollers, on which a reel under formation rests, and a pair of mating centers carried by mobile slides which engage the ends of the winding mandrel and are lifted gradually from the winding cradle formed by the winding rollers.
  • the invention also relates to a peripheral winding method, i.e. a method in which the web is wound on reels under formation by contact with winding members, e.g. rotary winding rollers.
  • a peripheral winding method i.e. a method in which the web is wound on reels under formation by contact with winding members, e.g. rotary winding rollers.
  • Web winding or rewinding operations are required in the field of non-woven processing, e.g. in the production of reels of semifinished materials intended for the production of sanitary towels, diapers and the like, and also in the production of paper, e.g. for the production of rolls of toilet paper, kitchen paper or similar, for the production of reels for supplying folding machines for the production of napkins, paper handkerchiefs and similar disposable products.
  • the web production process is continuous and the web is wound on large diameter parent reels. These parent reels are later unreeled and the web is rewound on smaller diameters reels or rolls.
  • the web is cut longitudinally and continuously and wound on winding cores, which can be made of cardboard, plastic or other suitable material, the core being fitted and aligned on a winding mandrel.
  • the winding mandrel is expandable, e.g. pneumatically or in any other equivalent way, to secure the winding cores onto it in the required positions.
  • the various tubular cores - whose axial length can be identical or different - receive corresponding strips of web obtained by longitudinally cutting the web from the parent reel.
  • the rolls or reels are wound in sequence.
  • the completed reel is unloaded from the winding cradle, e.g. formed by two winding rollers arranged side-by-side, and replaced with a new winding mandrel onto which the winding cores were previously secured.
  • a rewinding machine of this type is described in EP-A-0747308. Another example of rewinding machine of this type is described in EP-A-1070675. Additional examples of peripheral rewinding machine of the start-stop type, i.e. in which the supply of web is temporarily interrupted to replace the formed reel with another winding mandrel, are described in GB-A-2268476, DE-C-3836367, EP-A-0640544.
  • These rewinding machines must be capable of winding reels or rolls whose diameters may be large at considerably high winding speeds.
  • the web is fed at speeds exceeding 1000 meters per minute, also in the order of 2000 meters per minute.
  • Controlling the reel may be very difficult at such speeds. Such difficulties are particularly due to the fact that the winding mandrels, on which the cores where the web reels will be wound are inserted and blocked, are heavy in weight and tend to deflect by effect of their own weight. Other reported problems refer to eccentricity of the winding cores and winding mandrel inserted inside the cores. Both the eccentricity and the deflection generate strong vibrations at the high winding speed which is typical of these machines. During the winding phase the reels tend to vibrate in a horizontal direction which is orthogonal to their own axis. The vibrations will be higher when softer material is wound. The vibrations are more relevant when several reels or rolls are wound side-by-side on a single mandrel. Furthermore, the critical rotation speeds of the assembly formed by the mandrel and the reel being wound are relatively low and cannot be exceeded due to evident problems of dynamics.
  • Object of the invention is to provide a rewinding machine of the aforesaid type which is capable of either overcoming or limiting the aforementioned shortcomings and particularly which is capable of reaching particularly high winding speed thanks to winding mandrel control.
  • a rewinding machine comprising a winding cradle, on which a reel under formation is supported, and a pair of mating centers carried by mobile slides which engage the ends of the winding mandrel, in which at least one of the mating centers is associated to tensioning members which pull the winding mandrel when it is engaged by the mating centers.
  • the winding mandrel is pulled during the winding process, or at least during a phase of the winding process. This may contribute to reducing or eliminating the deflection caused by its own weight and to correct eccentricity by either reducing or eliminating it.
  • the critical speed of the mandrel is increased. This means that working at higher rotation speed is possible and consequently the web can be fed faster.
  • the tension control applied to the mandrel is operated according to the applied force and not to position. In this way, the mandrel is kept pulled also when the flanks of the machine are mechanically deformed.
  • the rewinding machine presents tensioning members associated to each of said mating centers, even though actually it can be foreseen that only one of the tensioning members be provided with an actuator which applies a traction force on the mandrel.
  • each mating center may present a gripping head which engages the respective end of the winding mandrel. Gripping can be obtained inside the mandrel, in an axial hole. In this case, the head will be of the expandable type. Gripping may, however, be obtained on the outside of the mandrel, e.g. on an oversized neck or collar which is engaged by a head which grips the mandrel from the outside.
  • the tensioning members comprise on at least one of said slides, at least one actuator for approaching the respective mating center to the end of the winding mandrel and pulling the winding mandrel by pulling the mating center in the opposite direction with respect to the direction of approach to the winding mandrel.
  • each mating center is associated to at least one actuator.
  • two actuators are associated to each mating center to obtain more balanced force.
  • both mating centers are associated to one or more respective actuators
  • the actuator or actuators of both may be advantageously used to approach the heads to the ends of the mandrels; the actuator or actuators of one mating center only pull the mandrel while the other mating center will cooperate with an abutment which determines the axial position that the mandrel must assume during the winding process.
  • the symmetric arrangement of the two mating centers with respective actuators and reference abutments on both slides means that either one or the other of the mating centers can be used alternatively for axial referencing.
  • the heads and the mating centers may be motor driven, advantageously and preferably, the heads are idly mounted, e.g. in a body of the mating center which can be sliding housed in a sleeve integral with the respective slide.
  • a rotating manifold can be used to feed the pressurized fluid to actuate the heads which grip the mandrel. Electrical operation may be used alternatively.
  • the invention also relates to a method for producing reels of web wound on winding mandrels in which: a winding mandrel is inserted in a winding cradle; a quantity of said web is wound on said winding mandrel which is turned in said winding cradle to form a reel; and the reel thus formed is unloaded from the winding cradle, characterized in that said winding mandrel is put under traction for at least one part of the rewinding process of said web on said winding mandrel.
  • the rewinding machine presents two parallel vertical flanks 3A, 3B between which two winding rollers 5, 7 are arranged.
  • the winding rollers present two parallel rotating axes 5A and 7A, respectively.
  • the two winding rollers 5 and 7 form a winding cradle 8 in which a winding mandrel M is either inserted or arranged with the respective tubular cores which are inserted and secured onto it in a way which is known per se.
  • Both the mandrel insertion means and the finished reel extraction means are not illustrated because they are not relevant for the invention and known the skilled in the field, neither are the members which cut the web at the end of the winding operation of a reel and before winding the following reel, for the same reasons.
  • Guides 11 are fixed on the inner side of the two flanks 3A, 3B, on which guides respective slides, generally indicated with reference numeral 13, slide.
  • the two slides 13 are reciprocally symmetric. Only one of them will be described in below with particular reference to figures 4, 5 and 6.
  • the slide 13 presents a block 13A on which shoes 13B are fitted for sliding on the guides 11.
  • the block 13A carries a sleeve 15 which supports the respective mating center inside, generally indicated by reference numeral 17.
  • the latter presents an expandable head 19 carried by the end of a spindle 21 which is coaxial to a body 23 of the mating center 17, which in turn is slidingiy housed inside the sleeve 15.
  • Reference numeral 25 indicates the journals of the spindle 21 carrying the expandable head 19.
  • the flanks 3A and 3B present windows 3C through which the sleeve 15, integral with the slide 13, protudes, so that the slide 13 is on one side of the respective flank while the members carried by the sleeve 15, especially the plate 31 and the actuators 33 with the slider 35, are on the opposite side of said flank.
  • the spindle 21 is perforated to allow the passage of a control fluid to the head 19.
  • the fluid is supplied via a rotating manifold 27 arranged on the opposite end of the spindle 21 with respect to the end carrying the head 19.
  • Air or other pressurized fluid is supplied to the manifold 27 via a flexible conduit (not shown) to control the expansion of the head 19 for the purposes herein described.
  • a plate 31 is secured outside the sleeve 15, developed on a plane which is orthogonal to the axis of the mating center 17 and whose shape is approximately rectangular.
  • Two cylinder-piston actuators 33 are fastened to the plate 31, parallel to the axis A-A of the mating center and arranged in diametrically opposite positions with respect to said axis, respectively over it and under it.
  • the rods 33A of the cylinder-piston actuator 33 are fastened to a slider 35 which is integral with a connecting member 37 which connects the slider 35 to the body 23 of the mating center 17.
  • the actuators 33 are firstly used to approach and distance the head 19 carried by the mating center 17 with respect to a winding mandrel, indicated with reference M, which is in the winding cradle formed by the winding rollers 5 and 7.
  • the winding spindle M presents a hollow end tang M1 in which the head 19 fits. The head expands and engages the winding mandrel M.
  • a stop is formed outside the sleeve 15 by a pair of ring nuts 39 with which elements 41 which are integral with the slider 35 cooperate.
  • the stop 39 is adjustable and arranged so that it determines the axial position in which the winding mandrel M must assume in the winding cradle formed by the winding rollers 5 and 7 when the mating center 37 is in the position shown in figure 6.
  • a movement synchronization mechanism comprising a transversal shaft 53 supported by the flanks 3A and 3B on which toothed pulleys or gears 55 are fitted (near and inside the flanks).
  • Flexible members 57 turn on the gears or toothed pulleys.
  • the flexible members additionally turn on another gear or toothed pulley 59, idly supported on the respective flank at a lower height slightly over the winding rollers 5 and 7.
  • the two flexible members 57 are fastened in point 61 to the respective slides 13 so that each of the latter move synchronously without the two cylinder-piston actuators 51 needing to perform particularly accurate movements.
  • different types of mechanisms can be used to raise and lower the slides 13, e.g. threaded bar mechanisms as those described in EP-A-0747308.
  • the slides 13 and the respective mating centers 17 move vertically in the direction of the double arrow f13 (figures 1, 2, 3) between a minimum height indicated by the dotted line and a higher position.
  • the first position is that assumed by the axis A-A of the mating centers when they are engaged on the winding mandrel M and the latter with the winding cores fitted on it is in the winding cradle defined by the winding reels 5 and 7 in the initial winding phase before the web is wound on the winding cores.
  • the upper position, indicated with a solid line in figures 1 and 2 corresponds to the maximum height which can be reached by the slides 13 when the reel under formation (indicated by reference R) reaches its final diameter, i.e. when the required amount of web N has been wound on it.
  • the rewinding machine described to this point works as follows. Reference is made in this description to the formation of a reel on the winding mandrel.
  • the reel under formation can be formed by a plurality of single reels side-by-side which simultaneously receive the same length of web, since the winding cycle can be carried out on tubular cores axially aligned on the mandrel by winding strips of web obtained by longitudinally cutting a single incoming web. Consequently, the term "reel" can herein indicate a single reel or a plurality of axially aligned reels formed at the same time in general.
  • the mandrel M with the respective cores is inserted in the winding cradle defined between the winding rollers 5 and 7 when the winding operation must be started on a new winding mandrel M with the winding cores fitted and secured to it by expansion of the mandrel (this operation is carried out in a separate station with respect to the rewinding machine).
  • This operation is carried out in a way which is known per se after removing the reel R formed in the previous cycle from the winding cradle.
  • the operation concerning transversally cutting the web and winding the first turn of web on the winding cores fitted on the mandrel is also carried out in a known way.
  • the mandrel M is arranged axially between the flanks 3A, 3B in the desired position by means of one of the two mating centers 17. This operation is required because, as mentioned above, several winding cores A (one of which is schematically shown in figure 3) is fitted on the winding mandrel M.
  • the winding cores generally present variable longitudinal dimensions and must be aligned with respect to the strips of web N cut upstream with respect to the winding zone so that the strips are wound on the pertinent tubular cores A.
  • One of the two mating centers 17 is moved from the initial position shown in figure 5 to the position shown in figure 6 defined by the stops 39 against which the elements 41 integral with the cursor 35 secured to the body 23 of the mating center 17 rests.
  • the mating center slides inside the sleeve 15 to insert the expandable head 19 in the tang M1 of the mandrel M which is in the winding cradle, whereby pushing the mandrel M to the final position defined by the stops 39.
  • the other mating center 17, which is symmetric with respect to the previous mating center and arranged on the opposite end of the mandrel M on the other flank of the machine is axially moved to make the expandable head 19 penetrate inside the other tang M1 of the winding mandrel M.
  • both the heads 19 are inserted in the tangs M1 of the winding mandrel M, the heads are expanded by means of the fluid fed via the rotating manifold 27 to axially engage the winding mandrel M.
  • the mating center 17 which is not used to axially position the mandrel M is pulled in the opposite direction with respect to that which made the head 19 fit into the tang M1 of the winding mandrel M, i.e. it is distanced by elongating the corresponding cylinder-piston actuators 33.
  • the web M can start being wound in a suitable instant after axially positioning the mandrel by means of the stops 39 of one of the two mating centers.
  • the two slides 13 and the respective mating centers 17 are configured in a symmetrical way, they can both be used alternatively for axially positioning the mandrel and for axially tensioning it.
  • the possibility is not ruled out that the two mating centers are configured in a different way so that one can always only be used for axially positioning the mandrel while the other can only be used for tensioning it.
  • the actuators 33 associated to the mating center 17 used for axial positioning and not for tensioning the mandrel remain essentially inactivated and the reaction to the traction force on the mandrel M is released on the slide 13 via the sleeve 15.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Cereal-Derived Products (AREA)
EP02425419A 2002-06-25 2002-06-25 Umwickelmaschine mit Mitteln zum axialen Ziehen des Wickeldorns Expired - Lifetime EP1375402B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60206479T DE60206479D1 (de) 2002-06-25 2002-06-25 Umwickelmaschine mit Mitteln zum axialen Ziehen des Wickeldorns
AT02425419T ATE305888T1 (de) 2002-06-25 2002-06-25 Umwickelmaschine mit mitteln zum axialen ziehen des wickeldorns
EP02425419A EP1375402B1 (de) 2002-06-25 2002-06-25 Umwickelmaschine mit Mitteln zum axialen Ziehen des Wickeldorns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02425419A EP1375402B1 (de) 2002-06-25 2002-06-25 Umwickelmaschine mit Mitteln zum axialen Ziehen des Wickeldorns

Publications (2)

Publication Number Publication Date
EP1375402A1 true EP1375402A1 (de) 2004-01-02
EP1375402B1 EP1375402B1 (de) 2005-10-05

Family

ID=29717030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02425419A Expired - Lifetime EP1375402B1 (de) 2002-06-25 2002-06-25 Umwickelmaschine mit Mitteln zum axialen Ziehen des Wickeldorns

Country Status (3)

Country Link
EP (1) EP1375402B1 (de)
AT (1) ATE305888T1 (de)
DE (1) DE60206479D1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1757545A3 (de) * 2005-08-19 2007-10-17 Voith Patent GmbH Rollenwickelvorrichtung
US7392961B2 (en) 2005-08-31 2008-07-01 The Procter & Gamble Company Hybrid winder
US7455260B2 (en) 2005-08-31 2008-11-25 The Procter & Gamble Company Process for winding a web material
EP1818296A3 (de) * 2006-02-09 2008-12-10 Voith Patent GmbH Rollenwickelvorrichtung
US7546970B2 (en) 2005-11-04 2009-06-16 The Procter & Gamble Company Process for winding a web material
US8157200B2 (en) 2009-07-24 2012-04-17 The Procter & Gamble Company Process for winding a web material
US8162251B2 (en) 2009-07-24 2012-04-24 The Procter & Gamble Company Hybrid winder
US8800908B2 (en) 2005-11-04 2014-08-12 The Procter & Gamble Company Rewind system
WO2015056194A1 (en) 2013-10-18 2015-04-23 A.Celli Paper S.P.A. A winding rod for reels of web material and a winding machine using said rod

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8459586B2 (en) 2006-03-17 2013-06-11 The Procter & Gamble Company Process for rewinding a web material
US7559503B2 (en) 2006-03-17 2009-07-14 The Procter & Gamble Company Apparatus for rewinding web materials
CN101798029B (zh) * 2009-11-09 2012-04-18 东莞市飞新达精密机械科技有限公司 自动复卷装置及自动复卷方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312408A (en) * 1964-10-12 1967-04-04 Thomas M Owens Live collar assembly for winding machines
US4969609A (en) * 1988-10-26 1990-11-13 J. M. Voith Gmbh Winding machine for paper or cardboard webs
US5439187A (en) * 1992-07-07 1995-08-08 Shimizu Machinery Co., Ltd. Method and device for taking up toilet paper
US5855337A (en) * 1990-08-23 1999-01-05 Jagenberg Aktiengesellschaft Winding machine with support cylinders and air pressure relieved wind up rolls

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312408A (en) * 1964-10-12 1967-04-04 Thomas M Owens Live collar assembly for winding machines
US4969609A (en) * 1988-10-26 1990-11-13 J. M. Voith Gmbh Winding machine for paper or cardboard webs
US5855337A (en) * 1990-08-23 1999-01-05 Jagenberg Aktiengesellschaft Winding machine with support cylinders and air pressure relieved wind up rolls
US5439187A (en) * 1992-07-07 1995-08-08 Shimizu Machinery Co., Ltd. Method and device for taking up toilet paper

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1757545A3 (de) * 2005-08-19 2007-10-17 Voith Patent GmbH Rollenwickelvorrichtung
US7392961B2 (en) 2005-08-31 2008-07-01 The Procter & Gamble Company Hybrid winder
US7455260B2 (en) 2005-08-31 2008-11-25 The Procter & Gamble Company Process for winding a web material
US7546970B2 (en) 2005-11-04 2009-06-16 The Procter & Gamble Company Process for winding a web material
US8800908B2 (en) 2005-11-04 2014-08-12 The Procter & Gamble Company Rewind system
US9365378B2 (en) 2005-11-04 2016-06-14 The Procter & Gamble Company Rewind system
EP1818296A3 (de) * 2006-02-09 2008-12-10 Voith Patent GmbH Rollenwickelvorrichtung
US8157200B2 (en) 2009-07-24 2012-04-17 The Procter & Gamble Company Process for winding a web material
US8162251B2 (en) 2009-07-24 2012-04-24 The Procter & Gamble Company Hybrid winder
WO2015056194A1 (en) 2013-10-18 2015-04-23 A.Celli Paper S.P.A. A winding rod for reels of web material and a winding machine using said rod

Also Published As

Publication number Publication date
DE60206479D1 (de) 2005-11-10
ATE305888T1 (de) 2005-10-15
EP1375402B1 (de) 2005-10-05

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