EP1777181A2 - Winding core, winding machine and method for winding a material web - Google Patents

Winding core, winding machine and method for winding a material web Download PDF

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Publication number
EP1777181A2
EP1777181A2 EP06113980A EP06113980A EP1777181A2 EP 1777181 A2 EP1777181 A2 EP 1777181A2 EP 06113980 A EP06113980 A EP 06113980A EP 06113980 A EP06113980 A EP 06113980A EP 1777181 A2 EP1777181 A2 EP 1777181A2
Authority
EP
European Patent Office
Prior art keywords
winding core
winding
drum
suction
region
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.)
Withdrawn
Application number
EP06113980A
Other languages
German (de)
English (en)
Other versions
EP1777181A3 (fr
Inventor
Ferdinand Schmatz
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1777181A2 publication Critical patent/EP1777181A2/fr
Publication of EP1777181A3 publication Critical patent/EP1777181A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/12—Advancing webs by suction roller
    • 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
    • B65H2301/41419—Starting winding process
    • B65H2301/41426—Starting winding process involving suction means, e.g. core with vacuum supply

Definitions

  • the invention relates to a winding core for preferably continuous winding a material web, in particular a paper or board web, comprising a drum comprising a jacket and two covers, each having a journal, the shell of which has a number of passage openings.
  • the invention relates to both a winding machine and a method for preferably continuous winding a material web, in particular a paper or board web, on a winding core.
  • Such a winding core is already known and used for example in a winding machine for the production of paper or cardboard (fibrous web) to the finished and running paper or board web without interrupting the manufacturing process, that is, without switching off the paper or board machine, one after the other alswickeln on several hubs, which are also referred to as Tamboure.
  • the hubs previously used each comprise a drilled or perforated drum, over which during a starting process of the winding machine or a demolition of the web a narrow threading strip also referred to as Einfädelst Shape and during normal operation of the winding machine, the entire web width is performed.
  • the winding core is connected via a bore introduced in the bearing journal of its cover with a suction device which acts on the interior of the winding core with a negative pressure.
  • the negative pressure is transmitted to the outer surface of the shell via the openings penetrating the shell of the winding core.
  • a particular disadvantage of the known winding cores is that with increasing machine speeds, the vortex losses of the air flow in the interior of the winding core and the friction losses in the journal holes are so large that a sufficient aspiration of the interior of the hub is no longer possible. To remedy this, the cross-section of the bore in the journal must be increased. However, this is not arbitrarily possible, so that the winding core described above for high machine speeds is no longer applicable.
  • the apparatus comprises at least one drum comprising a jacket and two lids provided with journals, the shell of which is provided with a number of passage openings.
  • at least one impeller is arranged, which divides the interior of the drum - seen in the longitudinal direction of the drum - into separate chambers with different pressures.
  • a disadvantage of this device is, inter alia, that the passage openings extend almost over the entire length of the drum and thus due to the suction at least one chamber is generated with overpressure, wherein the outwardly exiting through the through holes Air of the pressure chamber, the material web pushes away from the surface and thus prevents a safe and efficient transfer of the complete transfer strip on the winding core.
  • devices are known in which a number of air passage openings in the jacket having Direction winding core is sucked by a suction box on the outer surface of the shell, whereby a negative pressure is introduced into the interior of the winding core.
  • the negative pressure spreads over the air passage openings to the area covered by the material web of the winding core. Due to the high space requirements of such devices, which is not available in all cases within the machine, their applications are limited.
  • a winding core of the type mentioned above in that the jacket is provided with passage openings at least in the region in which a leader strip initially formed from the material web is applied to the winding core and that at least one means is provided which comprises these a suction zone forming through openings at least during the application of the AufzhoustMails on the winding core inside with a preferably controllable / regulated negative pressure applied.
  • the means comprises at least one external and preferably controllable vacuum source which can be coupled to the at least one bearing journal provided with an axial passage opening at least during the application of the threading strip to the winding core by means of at least one movable vacuum line.
  • the winding core receives an axial passage opening through the bearing pin, it does not receive any installation in comparison to known winding cores.
  • the coupling of the movable vacuum line is relatively simple due to a simple axial movement with respect to the winding core, wherein only stationary elements ultimately find their use in the region of the winding core.
  • the vacuum source is preferably a fan, a higher-level vacuum system, in particular for a DuoStabilisator system for a dryer section, or the like.
  • the possible connection of the vacuum line to a higher-level vacuum system provides in particular the advantage that no system together with its own unit for temporary generation of negative pressure is necessary.
  • the means comprises at least one internal and preferably controllable venturi unit, which is arranged stationary in the region of the suction zone such that its suction region is assigned to the through openings on the inside and the suction region in the opposite direction via at least one suction channel with its jet pump is connected to the outlet side has a discharge diffuser and inlet side a nozzle for a driving compressed air, wherein the nozzle via an axial passage opening in the journal and at least one preferably movable overpressure line with an externally and externally coupled to the bearing pin and preferably controllable / regulated compressed air source at least during the application of the AufgarstMails is connectable to the winding core.
  • the essential elements for the temporary generation of the negative pressure are fixedly arranged in the interior of the winding core and that in comparison to the first embodiment of smaller diameter of the axial passage opening in the bearing pin is required to efficiently the negative pressure produce.
  • the coupling of the movable vacuum line again turns out relatively easy due to a simple axial movement with respect to the winding core.
  • the means comprises at least one internal and preferably controllable / controllable negative pressure source, which Interior of the drum in at least two separate chambers with at least during the application of the AufzhoustMails on the winding core different pressures divides, wherein the chamber is associated with at least temporary negative pressure of the suction zone.
  • the winding core can therefore be considered as a closed system, the system can also be designed largely maintenance-free.
  • the vacuum source is preferably a fan comprising at least one impeller, wherein the impeller is mounted in a floating manner in a cover of the drum or the impeller is non-rotatably connected to a drive shaft, which is arranged concentrically to the axis of rotation of the drum.
  • the impeller the inner of the drum - viewed in the longitudinal direction of the drum - divide so that the drum is only partially sucked, that is, the interior and the outer surface are only partially applied with a negative pressure.
  • the impeller preferably has outer dimensions which are adapted to the interior of the drum such that an undesired backflow of the air conveyed by the impeller from the pressure side to the suction side of the impeller is prevented or at least kept very small.
  • two embodiments of the fan are preferred, which are characterized in that the impeller is driven from the outside by means of the drive shaft or can be driven by a arranged in the interior of the drum electric motor.
  • On the drive shaft for example, a pulley connected to a drive device or a belt drive is arranged, which acts on the drive shaft with a drive torque.
  • the second possibility provides the advantage that the required space is further reduced.
  • the costs for the winding core are further reduced.
  • the negative pressure generated at least temporarily by the agent in the region of the suction zone preferably has a value in the range from 0.1 to 1.3 kPa, preferably from 0.3 to 1 kPa. This relatively small range of values results from the fact that the required and therefore also generated negative pressure essentially only has to overcome the centrifugal force and that the suction zone is designed according to the requirements imposed by the threading strip.
  • the suction zone of the winding core according to the invention has a sufficient suction width in the range of 50 to 300 mm, preferably from 100 to 250 mm, to a sufficient extent.
  • the winding machine according to the invention for preferably continuous winding of a material web, in particular a paper or board web, on a winding core, is characterized in particular by the fact that the winding core is formed at least according to the invention.
  • the inventive method for preferably continuous winding a material web, in particular a paper or board web, on a winding core, wherein the winding core has a jacket and two provided with a bearing journal cover comprehensive drum, the jacket has a number of through holes is characterized in particular in that a winding core according to the invention is used.
  • the winding core described below is generally used for winding a moving material web, for example a paper or board web, in a winding machine.
  • the winding machine can be arranged at the end of a machine for producing or finishing a moving material web to wind the finished moving material web to a winding roll. But the winding machine can also be used to roll finished winder rolls. Purely by way of example, it is assumed that this is a winding machine for winding a continuous material web.
  • the winding core 1 respectively shown in FIGS. 1 to 3 for preferably continuous winding of a material web, in particular a paper or board web, has a drum 2 which comprises a jacket 3 and two covers 4 provided with bearing pins 5 and arranged on the face side.
  • the jacket 3 of the drum 2 is provided with a number of passage openings 6, which connect the outer surface 7 of the shell 3 with the interior 8 of the winding core 1.
  • the passage openings 6 are formed as bores and have in the region of the outer surface 7 a preferably enlarged cross-section.
  • the respective bearing pin 5 for supporting the winding core 1 is formed as shown in one piece with the cover 4 and provided approximately centrally with a bearing 9 of known construction. Furthermore, at the end of the bearing pin 5 is a Tambourglocke 10th attached, which protrudes flush and radially on the outside beyond the end of the bearing journal 5 with a projection 11.
  • the jacket 3 is provided with passage openings 6 only in the region 12 in which an initially formed from the material web and merely indicated AufzhoustMail 13 is applied to the winding core 1.
  • a means 14 is provided, which at least during the application of the AufzhoustMails 13 on the winding core 1 on the inside with a preferably controllable / controllable negative pressure p u applied to the 12 in the region 12, a suction zone 15 forming through holes.
  • the means 14 comprises at least one external and preferably controllable, but only indicated in the figure 1 vacuum source 16, at least during the application of the AufzhoustMails 13 on the winding core 1 by means of at least one movable vacuum line 17 to the at least one with an axial passage opening 18 provided bearing pin 5 can be coupled.
  • the movement B of the vacuum line 17 is shown by means of a double arrow and the direction of movement R of the air flow in the interior 8 of the winding core 1 with arrows.
  • the vacuum source 16 may be in a preferred embodiment, a fan, a higher-level vacuum system, in particular for a DuoStabilisator system for a dryer section, or the like.
  • FIG. 2 shows a partial view of a further embodiment variant of the winding core 1 according to the invention in a sectional view.
  • the jacket 3 is provided with passage openings 6 only in the region 12 in which an initially formed from the material web and merely indicated AufzhoustMail 13 is applied to the winding core 1.
  • a means 14 is provided, which at least during the application of the AufzhoustMails 13 on the winding core 1 on the inside with a preferably controllable / controllable negative pressure p u applied to the 12 in the region 12, a suction zone 15 forming through holes.
  • the means 14 comprises at least one internal and preferably controllable Venturihow 20, which is arranged stationary in the interior 8 of the drum 2 and in the region of the suction zone 15 that its suction portion 21 inside the through holes 6 is assigned and that the suction portion 21 in opposite direction is connected via at least one suction channel 22 with its jet pump 23, the outlet side has a discharge diffuser 24 and inlet side a nozzle 25 for a driving compressed air 26.
  • the nozzle 25 is for this purpose via an axial passage opening 18 in the bearing pin 5 and a movable pressure line 27 with an external and externally connectable to the bearing pin 5, controllable / controllable and in the figure 3 but only indicated compressed air source 28 at least during the application of the AufriostMails 13 on the winding core 1 connectable.
  • the movement B of the pressure line 28 is shown by arrows and the direction of movement R of the compressed air 26, wherein the stream of compressed air 26 after passing through the nozzle 25 is added to the suction areas 22 removed air flow (arrow) in the interior 8 of the winding core 1.
  • the passage opening 18 in the bearing journal 5 and the jet pump 23 are aligned with each other in the axial direction of the winding core 1.
  • the suction channel 23 may preferably also consist of a plurality of individual channels, which are flow-optimized from the suction region 21 to the jet pump 23.
  • the suction channel 23 may be formed completely circumferentially.
  • the jacket 3 shows a partial view of a third embodiment of the winding core 1 according to the invention in a sectional view.
  • the jacket 3 is provided with passage openings 6 only in the region 12 in which an initially formed from the material web and merely indicated AufzhoustMail 13 is applied to the winding core 1.
  • a means 14 is provided, which at least during the application of the AufzhoustMails 13 on the winding core 1 on the inside with a preferably controllable / controllable negative pressure p u applied to the 12 in the region 12, a suction zone 15 forming through holes.
  • the means 14 includes at least one internal and preferably controllable / adjustable vacuum source 29, the interior space 8 of the drum 2 in at least two separate chambers K 1, K 2, at least during the application of the leader 13 different on the winding core 1 pressures p 1 , P 2 divides, wherein the chamber K1 associated with at least temporary negative pressure p u of the suction zone 15.
  • the vacuum source 29 is an impeller 31 comprehensive fan 30, wherein the impeller 31 is driven by a arranged in the interior 8 and the lid 4 of the drum 2 electric motor 32. At the other, but not shown lid openings are preferably mounted for discharging the air flow generated by the impeller 31 during operation.
  • the direction of movement R of the air flow is shown by arrows.
  • the impeller may also be non-rotatably connected to a drive shaft, which is arranged concentrically to the axis of rotation of the drum.
  • the means 14 shown in FIGS. 1 to 3 are designed such that the negative pressure p u generated at least temporarily in the region of the suction zone 15 has a value in the range from 0.1 to 1.3 kPa, preferably from 0.3 to 1 kPa, having.
  • the suction zone 15 moreover has a suction width B s in the range from 50 to 300 mm, preferably from 100 to 250 mm.
  • winding core 1 shown in the figures is excellently suitable for use in a winding machine known to those skilled in the art for preferably continuous winding of a material web, in particular a paper or board web, onto a winding core.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Paper (AREA)
EP06113980A 2005-07-26 2006-05-16 Winding core, winding machine and method for winding a material web Withdrawn EP1777181A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510000094 DE102005000094A1 (de) 2005-07-26 2005-07-26 Wickelkern, Wickelmaschine und Verfahren zum Aufwickeln einer Materialbahn

Publications (2)

Publication Number Publication Date
EP1777181A2 true EP1777181A2 (fr) 2007-04-25
EP1777181A3 EP1777181A3 (fr) 2009-04-29

Family

ID=37106586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06113980A Withdrawn EP1777181A3 (fr) 2005-07-26 2006-05-16 Winding core, winding machine and method for winding a material web

Country Status (2)

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EP (1) EP1777181A3 (fr)
DE (1) DE102005000094A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103287615A (zh) * 2013-06-14 2013-09-11 江西创一精密机械有限公司 薄料板分板装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051540B4 (de) * 2005-10-26 2016-01-07 Ewald Dörken Ag Halteelement und Vorrichtung zum Auf- und/oder Abwickeln von flexiblen Bahnenwaren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4413878A1 (de) * 1994-04-21 1995-11-16 Bardusch Carl Gmbh & Co Aufwickelvorrichtung zum gleichzeitigen Aufwickeln von mehreren Handtuchbahnen an einer Heißmangel
DE19647919A1 (de) * 1996-11-20 1998-05-28 Voith Sulzer Papiermasch Gmbh Vorrichtung zur Führung einer Materialbahn
WO2001046051A1 (fr) * 1999-12-22 2001-06-28 Kimberly-Clark Worldwide, Inc. Systeme de mandrin enrouleur
DE10232555B3 (de) * 2002-07-18 2004-01-15 Koenig & Bauer Ag Umlenkstange für eine Materialbahn
WO2004015198A1 (fr) * 2002-08-09 2004-02-19 Metso Paper, Inc. Procede et dispositif d'enfilage d'une bande dans la bobine d'une bande de papier ou de carton

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4413878A1 (de) * 1994-04-21 1995-11-16 Bardusch Carl Gmbh & Co Aufwickelvorrichtung zum gleichzeitigen Aufwickeln von mehreren Handtuchbahnen an einer Heißmangel
DE19647919A1 (de) * 1996-11-20 1998-05-28 Voith Sulzer Papiermasch Gmbh Vorrichtung zur Führung einer Materialbahn
WO2001046051A1 (fr) * 1999-12-22 2001-06-28 Kimberly-Clark Worldwide, Inc. Systeme de mandrin enrouleur
DE10232555B3 (de) * 2002-07-18 2004-01-15 Koenig & Bauer Ag Umlenkstange für eine Materialbahn
WO2004015198A1 (fr) * 2002-08-09 2004-02-19 Metso Paper, Inc. Procede et dispositif d'enfilage d'une bande dans la bobine d'une bande de papier ou de carton

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103287615A (zh) * 2013-06-14 2013-09-11 江西创一精密机械有限公司 薄料板分板装置

Also Published As

Publication number Publication date
DE102005000094A1 (de) 2007-02-01
EP1777181A3 (fr) 2009-04-29

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