EP1990297A2 - Dispositif de déroulement d'une bande sans fin - Google Patents

Dispositif de déroulement d'une bande sans fin Download PDF

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Publication number
EP1990297A2
EP1990297A2 EP08008318A EP08008318A EP1990297A2 EP 1990297 A2 EP1990297 A2 EP 1990297A2 EP 08008318 A EP08008318 A EP 08008318A EP 08008318 A EP08008318 A EP 08008318A EP 1990297 A2 EP1990297 A2 EP 1990297A2
Authority
EP
European Patent Office
Prior art keywords
roller
conveying means
unwinding
roll
web
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
EP08008318A
Other languages
German (de)
English (en)
Other versions
EP1990297A3 (fr
EP1990297B1 (fr
Inventor
Bert Nonnenmacher
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.)
Paul Hartmann AG
Original Assignee
Paul Hartmann AG
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 Paul Hartmann AG filed Critical Paul Hartmann AG
Publication of EP1990297A2 publication Critical patent/EP1990297A2/fr
Publication of EP1990297A3 publication Critical patent/EP1990297A3/fr
Application granted granted Critical
Publication of EP1990297B1 publication Critical patent/EP1990297B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/10—Arrangements for effecting positive rotation of web roll
    • B65H16/106—Arrangements for effecting positive rotation of web roll in which power is applied to web roll
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/32—Orientation of handled material
    • B65H2301/325—Orientation of handled material of roll of material
    • B65H2301/3253—Orientation of handled material of roll of material inclined axis
    • 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
    • B65H2301/413—Supporting web roll
    • B65H2301/4137—Supporting web roll on its outer circumference
    • B65H2301/4138—Supporting web roll on its outer circumference belt arrangement
    • 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
    • B65H2701/17—Nature of material
    • B65H2701/174—Textile, fibre

Definitions

  • the invention relates to a device for unwinding a continuous web from a roll in the course of the production of absorbent hygiene articles, dressings, surgical materials or medical devices, wherein the endless web is fed to a configuration process.
  • this may be a device for unwinding a wadding web from a very bulky cotton roll or any fibrous nonwoven web or foam web.
  • center unwinding devices In the field under discussion, a distinction is made between so-called center unwinding devices and peripheral unwinding devices.
  • a center unwinding device the roller is held and driven in the center, thus unwinding the material web in the circumferential direction on the outside.
  • These devices have the great advantage that the tension in the unwound web due to the central drive of the roll can be adjusted by separate means according to the requirements.
  • the control or regulation of the unwinding process is difficult, since preferably a constant web speed should be achieved.
  • the present invention has for its object to improve an apparatus and a method for unwinding a continuous web of the generic type to the effect that the device or the method very is simple and inexpensive and the times for a roll change can be kept as low as possible.
  • a generic device which is characterized by an areally extended funding for the continuous web and arranged at the conveyor support means for the role, which is designed so that the role oriented inclined with its roller plane to the vertical and radially against the conveying means is supported and arranged rolling against the conveying means and is thus positioned by gravity in an operating position for unwinding the endless web.
  • this role is simply inserted into the device; So she no longer needs to be positioned on a shaft or a thorn, it slips almost by gravity due to its operating position, where it is then held by the support means in a sense captive, but unrollable with appropriate game for unwinding.
  • the actual withdrawal movement of the web is initiated by the conveyor, in which the conveyor engages the tail and moves in the conveying direction, while the roller rolls against the conveyor and in turn is held by the support means gravity in the operating position.
  • the inclination of the support device to the vertical is advantageously 3 - 20 °, in particular by 3 - 15 ° and further in particular by 3 - 10 °.
  • the conveyor is inclined in the conveying direction against the horizontal upwards, in particular by 5 - 50 °, in particular by 10 - 45 °, in particular by 10 - 40 ° and in particular around 20-40 °. This is advantageous because, in that case, the roll does not need to be held against the conveying direction by further means during unwinding.
  • the support means comprises a first abutment means for the roller which is substantially perpendicular to a plane of the conveyor.
  • the support means could ansich have any support means to support the role inclined with its roller plane to the vertical.
  • the support device has a first attachment means for the roller, which forms a substantially planar contact surface. In such a case, the pressure and thus the surface friction between the roller and the support device is reduced, and it can also be handled severely deformed and telescoped rollers.
  • the support means comprises a second abutment means for the roller, which supports the roller radially and against which the roller slides in the circumferential direction during unwinding. In this way, a defined end stop is realized, which holds the role against the withdrawal direction in the operating position.
  • This second attachment means is advantageously substantially perpendicular to a plane of the conveyor and / or extends to the first attachment means.
  • first investment means opposite side of the device is open or with an opening formed so that a roller is inserted into the unwinding device substantially perpendicular to its roller plane.
  • a side of the device opposite the conveying means can also be open or provided with an opening, so that the roller can be inserted into the device substantially radially or, as it were, from above into its operating position. In this case, the roller can slide into its operating position via the support device or its first abutment means.
  • the areally extended conveying means can be advantageously formed by a conveyor belt.
  • the transport connection of the continuous web to the conveying means or conveyor belt is achieved in that it is acted upon by negative pressure, so that the endless web can be sucked against the conveying means.
  • the relevant tail can then be virtually "found” by itself and fed to further processing. Another manual intervention in the device is not required.
  • the areally extended conveying means in particular the conveyor belt, can furthermore be subjected to negative pressure in such an advantageous manner and designed so that the endless web is driven only by the conveying means, can be unwound from the roll, wherein the roll can be unrolled against the conveying means.
  • the conveyor can advantageously at a speed of up to 100 m / min. be drivable in particular 50 to 100 m / min. It advantageously has a width transversely to the conveying direction of 5 to 150 cm, in particular 20 -.
  • 100 cm in particular from 25 to 70 cm and more particularly from 25 to 60 cm.
  • the unwinding device or its support device for receiving a roll with a diameter preferably of up to 200 cm, in particular from 30 to 200 cm, in particular from 50 to 200 cm, in particular from 50 to 150 cm is formed.
  • the unwinding device also comprises a particularly largely automated feeding device, by means of which new rolls can be fed from such a storage device into its operating position in the unwinding device.
  • the invention further relates to a method having the features of claim 18.
  • this method is carried out with endless webs having a relatively low basis weight and a relatively large volume, as indicated in particular in claims 24 and 25, this means that the entire Run length of the web per roll is relatively low, so that frequent role changes in the execution of the configuration process are required.
  • the inventive method and the Device according to the invention particularly advantageous because they allow a roll change particularly simple and time-saving, either by an operator or a particularly simple trained automated device.
  • the continuous web is sucked against the conveyor, and further in particular if the endless web is transported by the conveyor inclined to the horizontal inclined upwards.
  • the inclination to the horizontal is preferably 10 -45 °, in particular 10 - 40 ° and more particularly 20 - 40 °.
  • the inclination to the vertical is preferably 3 - 20 °, in particular 3 - 15 ° and more particularly 3 - 10 °.
  • the continuous web is formed according to an embodiment of the invention of a fiber layer, preferably of a nonwoven fabric, or of a foam.
  • the continuous web is preferably supplied with a basis weight of 50-500 g / m 2 , in particular 100-400 g / m 2 , in particular 130-300 g / m 2 . It has a preferred thickness of 1.5 to 20 mm, in particular 2.0 to 15 mm, in particular 2.5 to 10 mm, each measured at a test pressure of 0.5 kPa.
  • the figures show a device generally designated by the reference numeral 2 for unwinding an endless web, in particular a wadding web from a roll 4.
  • Subordinate to the device 2 is, for example, a fast-running continuously or endlessly operating machine for the production of hygiene articles or diapers, or dressing materials, surgical materials or other such medical devices.
  • the device 2 comprises an areally extended conveying means 6 in the form of a conveyor belt 8.
  • the conveyor belt is formed in a manner not shown as a suction belt and acted upon by negative pressure, so that withdrawn from the roll 4 continuous web 10 can be sucked against the conveyor belt 8 such that thereby required for unwinding of the roll 4 withdrawal force solely by the conveyor belt. 8 is provided or exercised.
  • the device 2 further comprises a support means generally designated by reference numeral 12.
  • the support device 12 comprises a first abutment means 14, which is formed by a substantially planar contact surface 16, against which the roller 4 with its roller plane 18 can be applied.
  • the first attachment means 14 or the contact surface 16 is as out FIG. 3 can be seen, to the vertical 20 by a few degrees, esp. 3 - 15 °, inclined. In this way it is achieved that the roller 4 with its roller plane 18 by gravity rests against the contact surface 16 and is supported by this.
  • the first abutment means 14 or the abutment surface 16 are preferably oriented substantially perpendicular to a plane 22 of the conveyor belt 8. In the operating position of the roller 4 shown in the figures, the roller 4 rests radially on the plane 22 of the conveyor belt 8 and is also with its roller plane 18 against the contact surface 16 at.
  • a second abutment means 24 is provided for the roller 4, against which the roller is radially supported. Against this second attachment means 24, the roller 4 slides in the circumferential direction during unwinding of the endless web 10.
  • the second abutment means 24 is formed by a contact surface 26.
  • the contact surface 26 is formed in the illustrated case perpendicular to the contact surface 16 and the plane 22 of the conveyor belt 8. It can be seen without further ado that the roller only needs to be inserted almost arbitrarily into the device 2 and then, due to gravity, slides into the illustrated correct operating position for unwinding. If the conveyor belt 8, which can be pressurized with negative pressure, is driven, the roller 4 in turn rolls against the conveyor belt 8ab by gravity and rolls or slides again and again into the correct operating position. In this case, the tape end is automatically "found” in which it (assuming only the correct orientation of the roller 4) is sucked against the conveyor belt 8 and then moved together with the conveyor belt 8 in the conveying direction 28.
  • the conveyor belt 8 or its plane 22 is inclined by 5 ° to 50 °, in particular by about 35-45 ° to the horizontal. This ensures that the roll remains in its operating position during unwinding, without the need for additional funds to be provided for this purpose.
  • the device according to the invention requires no centric holding device in the form of a shaft or a mandrel on which the roller is held unrolled.
  • FIG. 4 schematically the device 2 with a downstream of the unwinding processing machine 42 and the device 2 associated memory device 44 in which a plurality of roles are kept.
  • a new roller 48 of the storage device 44 can be removed and, in the simplest case by way of example, supplied to the unwinding device 2 by a simple translatory process. Further indicated is still a remaining winding tube 50 of the previous role, which automatically rolls out through the opening 32.

Landscapes

  • Advancing Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Unwinding Webs (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
EP20080008318 2007-05-05 2008-05-02 Dispositif de déroulement d'une bande sans fin Not-in-force EP1990297B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710021209 DE102007021209A1 (de) 2007-05-05 2007-05-05 Vorrichtung zum Abwickeln einer Endlosbahn

Publications (3)

Publication Number Publication Date
EP1990297A2 true EP1990297A2 (fr) 2008-11-12
EP1990297A3 EP1990297A3 (fr) 2009-07-15
EP1990297B1 EP1990297B1 (fr) 2013-02-13

Family

ID=39596528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080008318 Not-in-force EP1990297B1 (fr) 2007-05-05 2008-05-02 Dispositif de déroulement d'une bande sans fin

Country Status (2)

Country Link
EP (1) EP1990297B1 (fr)
DE (1) DE102007021209A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1997755B1 (fr) * 2007-06-02 2011-04-06 Voith Patent GmbH Dispositif d'écorchage d'un rouleau d'une bande de matériau d'un tambour de rouleau

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384533A2 (fr) 1989-02-22 1990-08-29 Industria Grafica Meschi S.r.l. Dispositif de déroulage pour bobines de papier

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779473A (en) * 1972-04-20 1973-12-18 Hewlett Packard Co Automatic paper loading and guiding mechanism
GB2029804A (en) * 1978-09-05 1980-03-26 Marathon Knitwear Ltd Unwinding and Feeding Webs
JPH0228453A (ja) * 1988-07-18 1990-01-30 Nec Data Terminal Ltd ロール紙用紙送り装置
JPH07251983A (ja) * 1994-03-11 1995-10-03 Canon Aptecs Kk プリント媒体供給装置、該装置を具えたプリンタおよびプリント媒体巻取り装置
DE19510327A1 (de) * 1995-03-22 1996-09-26 Helmut Schmidt Vorrichtung zum Abrollen, Transport und Lagern eines Rundballen
EP0873960B1 (fr) * 1997-04-14 2004-02-25 Louis Zurfluh Procédé et dispositif d'enroulement ou de déroulement piloté d'un produit long sur respectivement à partir d'un corps de bobine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384533A2 (fr) 1989-02-22 1990-08-29 Industria Grafica Meschi S.r.l. Dispositif de déroulage pour bobines de papier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1997755B1 (fr) * 2007-06-02 2011-04-06 Voith Patent GmbH Dispositif d'écorchage d'un rouleau d'une bande de matériau d'un tambour de rouleau

Also Published As

Publication number Publication date
DE102007021209A1 (de) 2008-11-06
EP1990297A3 (fr) 2009-07-15
EP1990297B1 (fr) 2013-02-13

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