EP0802277A2 - Machine pour la fabrication d'une bande de matériau - Google Patents

Machine pour la fabrication d'une bande de matériau Download PDF

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Publication number
EP0802277A2
EP0802277A2 EP97102551A EP97102551A EP0802277A2 EP 0802277 A2 EP0802277 A2 EP 0802277A2 EP 97102551 A EP97102551 A EP 97102551A EP 97102551 A EP97102551 A EP 97102551A EP 0802277 A2 EP0802277 A2 EP 0802277A2
Authority
EP
European Patent Office
Prior art keywords
web guide
guide roller
web
groove
grooves
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Withdrawn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
EP97102551A
Other languages
German (de)
English (en)
Other versions
EP0802277A3 (fr
Inventor
Gerhard Kotitschke
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 Sulzer Papiermaschinen 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 Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0802277A2 publication Critical patent/EP0802277A2/fr
Publication of EP0802277A3 publication Critical patent/EP0802277A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices

Definitions

  • the invention relates to a machine for producing a material web according to the preamble of claim 1, and also to a method for producing a material web according to the preamble of claim 7.
  • Machines and methods of the type described here are known. They have a dryer section with at least one dryer group, which comprises a number of drying cylinders and vacuumed web guide rollers, around which the material web is meandered with the aid of a conveyor belt, also known as a sieve. It has often been shown that the vacuum supply of the web guide rollers is complex, provided that they are provided with a vacuum line arranged in the region of the support shaft of the web guide rollers. The design of the storage areas is therefore relatively complex. In many cases, special designs are also required to compensate for the longitudinal expansion of the web guide rolls.
  • a machine which has the features mentioned in claim 1 having.
  • the storage of the suctioned web guide roller is considerably simplified since an external suction box is now provided, which applies a negative pressure to the web guide roller from the outside.
  • the jacket of the web guide roller is provided with a number of through holes through which the negative pressure in the suction box is transmitted into the interior of the web guide roller.
  • a number of the through holes open into a groove which is made in the peripheral surface of the jacket from the outside.
  • the negative pressure built up inside the web guide roller can act through the through holes on the outside of the web guide roller opposite the suction box and hold or stabilize the material web there as it rotates around the web guide roller.
  • An embodiment of the machine is preferred, which is characterized in that several grooves are provided across the width of the web guide roller, each of which lies on a closed circular line.
  • a circular line is to be understood here as a line that lies in an imaginary plane on which the central or rotational axis of the web guide roller is perpendicular.
  • the groove runs along an imaginary helix on the outside of the web guide roller.
  • the groove can thus be made in one operation in the outer surface of the web guide roller.
  • groove (s) is (are) continuous
  • the grooves are covered by the conveyor belt, so that the pressure prevailing in the interior of the web guide roller can build up through the through holes in the groove. With continuous grooves it is ensured that the negative pressure reaches larger areas of the material web and thus the holding forces act on a particularly large area.
  • an embodiment of the machine is preferred which is designed such that the total area of the groove (s) is substantially larger than the total cross-sectional area of the through holes opening into the groove (s).
  • the jacket of the web guide roller is therefore weakened only by relatively few through holes. Nevertheless, it is possible to apply a negative pressure to a relatively large area, namely the effective outer surface of the grooves.
  • the negative pressure built up in the grooves acts on the surface that is covered by the conveyor belt or the material web. It is basically a projection of the groove surface onto an imaginary outer surface of the web guide roller.
  • At least one groove is made from the outside into the jacket of a vacuumed web guide roll, into which through holes are then drilled, which preferably run in the radial direction.
  • This An external suction box is then assigned to the web guide roller, which applies a vacuum to the jacket section of the web guide roller facing it, so that a corresponding vacuum is also built up in the interior of the web guide roller via the through holes.
  • the negative pressure is transferred to the outer surface of the web guide roller, so that a surrounding web of material is stabilized and held there.
  • An embodiment of the method is particularly preferred in which the through holes and the groove or grooves are made in the jacket of a web guide roller installed in a machine for producing a material web. It is therefore not necessary to remove the web guide roller from the machine in order to introduce the through holes required for producing the pressure inside the roller into the jacket of the web guide roller. Due to the fact that the negative pressure in the web guide roller is built up via the through holes in a groove, the surface of which is to be regarded as an effective area for the material web being guided around the web guide roller, relatively few through holes can be sufficient to have a sufficiently large, i.e. sufficient, negative pressure build up on the outside of the web guide roller. This means that relatively few through holes are required, which considerably reduces the time required for making the through holes. In addition, unnecessary weakening of the web of the web guide roller is avoided.
  • the machine for producing a material web is a paper-making machine.
  • This has a dryer section which comprises at least one dryer group, within which a number of drying cylinders and web guide rollers are provided.
  • the material web is meandered around the drying cylinders and web guide rollers with the help of a conveyor belt, also known as a sieve.
  • FIG. 1 shows a section of a machine 1 for producing a paper web, namely a dryer group 3, which is part of a dryer section of the paper manufacturing machine.
  • the drying group 3 here has, for example, three drying cylinders 5, 7 and 9, the centers of which lie on an imaginary plane E1.
  • a web guide roller 11 or 13 is provided in each case in the space between two adjacent drying cylinders.
  • the material or paper web 15, indicated by dashed lines, is guided around the drying cylinders and web guide rollers together with a conveyor belt 17, the web 15 lying in the area of the drying cylinders 5, 7 and 9 between the conveyor belt 17 and the surface of the drying cylinders and in the region of the web guide rollers 11 and 13 is guided around the outside.
  • the conveyor belt 17 is here — as usual — designed as a closed loop, the belt being returned from the end of the drying group 3 to the beginning of the drying group 3 via suitable deflection rollers 19 to 25.
  • the center points of the web guide rollers 11 and 13 lie on an imaginary second plane E2, which is arranged at a distance from the plane E1.
  • suction boxes 27 and 29 are provided, which act on or vacuum the web guide rollers 11 and 13 from the outside. So these are external suction boxes.
  • the web guide rollers 11 and 13 have an air-permeable jacket, so that a negative pressure is built up inside the web guide rollers 11 and 13 via the external suction box 27 and 29. This negative pressure acts through the air-permeable jacket on the area in which the material web 15 is guided outside over the web guide rollers. The material web 15 is therefore stabilized or fixed on the outer circumferential surface of the web guide rollers 11 and 13.
  • FIG. 2 shows a highly schematic section of the jacket 31 of the web guide roller 11, it being noted that the web guide rollers 11 and 13 are preferably constructed identically.
  • a groove 35 is introduced into the outer peripheral surface 33 of the jacket 31, into which through holes 37 penetrating the jacket 31, preferably running in the radial direction, open.
  • through holes 37 penetrate the shell 31 completely, the depth of the groove 35 can be made relatively flat.
  • the grooves 35 which are only indicated here, can be arranged next to one another at a distance from one another.
  • the grooves 35 lie on circular lines which are arranged in an imaginary plane on which the rotational or central axis 39 of the web guide roller 11 is perpendicular.
  • FIG. 4 shows a modified embodiment of the arrangement of the groove 35. This lies on an imagined spread across the width of the Web guide roller 11 extending helix. Both embodiments in FIGS. 3 and 4 have in common that the groove (s) is continuous. However, it is also conceivable to introduce groove sections arranged along a circular line or helical line into the jacket 31 of a web guide roller 11. However, the suction effect of the external suction box 27 and 29 is increased if the grooves are continuous. It is thus possible for the negative pressure which is applied by the suction box to continue along the grooves and to act in an area in which the material web 15 rests on the peripheral surface 33 of the web guide roller 11.
  • Figure 5 shows a plan view of a section of the circumferential surface 33 of a web guide roller 11 or 13. It can be seen that the width of the grooves 35 is chosen to be somewhat larger than the diameter of the through holes 37. So if the grooves 35 are covered by a conveyor belt or a material web , the suction force is determined by the negative pressure and by the area of the grooves 35 and not by the diameter of the through holes 37, the total cross-sectional area of which is smaller than the total area of the groove (s). It can thus be seen from the illustration according to FIG. 5 that a negative pressure built up in the grooves 35 via the through holes 37 generates a significantly greater suction force than would be the case if the peripheral surface 33 were only penetrated by through holes 37, that is to say on the grooves 35 would be waived.
  • the external suction boxes 27 and 29 are preferably constructed in such a way that the negative pressure given in their interior is primarily passed on to the web guide roller 11 or 13, so that a negative pressure also arises in the interior thereof and the material web 15 is held or held on the side facing away from the suction box is fixed.
  • FIGS. 1 to 5 The method mentioned above is readily apparent from the description of FIGS. 1 to 5. It consists in the fact that through holes 37 are made in the jacket 31 of a vacuumed web guide roller 11 or 13 which open into grooves 35 which have been made in the peripheral surface 33 of the web guide rollers 11, 13.
  • the through holes 37 are preferably positioned so that all open into the grooves.
  • the grooves which are preferably continuous, lie either on a closed circular line or on an imaginary helix that runs on the peripheral surface 33 of the web guide roller 11, 13.
  • the through holes 37 and the groove (s) 35, 35 ' can also be made subsequently in the jacket of a web guide roller, even if this remains installed in a machine for producing a material web 15. It is therefore possible to retrofit existing machines and to dispense with internal suction of the web guide rollers 11 and 13. This is replaced by external suction boxes 27 and 29, which can be designed so that the material web is held by the suction belt when passing by the vacuum.

Landscapes

  • Paper (AREA)
  • Advancing Webs (AREA)
  • Medicinal Preparation (AREA)
  • Drying Of Solid Materials (AREA)
EP97102551A 1996-04-18 1997-02-18 Machine pour la fabrication d'une bande de matériau Withdrawn EP0802277A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19615227 1996-04-18
DE19615227A DE19615227A1 (de) 1996-04-18 1996-04-18 Maschine zur Herstellung einer Materialbahn

Publications (2)

Publication Number Publication Date
EP0802277A2 true EP0802277A2 (fr) 1997-10-22
EP0802277A3 EP0802277A3 (fr) 1998-04-08

Family

ID=7791572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102551A Withdrawn EP0802277A3 (fr) 1996-04-18 1997-02-18 Machine pour la fabrication d'une bande de matériau

Country Status (5)

Country Link
US (1) US5829164A (fr)
EP (1) EP0802277A3 (fr)
CN (1) CN1168938A (fr)
CA (1) CA2202951A1 (fr)
DE (1) DE19615227A1 (fr)

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JP3723158B2 (ja) * 2002-05-30 2005-12-07 三菱重工業株式会社 ドライヤ真空ボックス
US8417374B2 (en) 2004-04-19 2013-04-09 Curt G. Joa, Inc. Method and apparatus for changing speed or direction of an article
US7703599B2 (en) 2004-04-19 2010-04-27 Curt G. Joa, Inc. Method and apparatus for reversing direction of an article
US7708849B2 (en) 2004-04-20 2010-05-04 Curt G. Joa, Inc. Apparatus and method for cutting elastic strands between layers of carrier webs
US20050230037A1 (en) 2004-04-20 2005-10-20 Curt G. Joa, Inc. Staggered cutting knife
US7638014B2 (en) 2004-05-21 2009-12-29 Curt G. Joa, Inc. Method of producing a pants-type diaper
US7811403B2 (en) 2005-03-09 2010-10-12 Curt G. Joa, Inc. Transverse tab application method and apparatus
US7618513B2 (en) * 2005-05-31 2009-11-17 Curt G. Joa, Inc. Web stabilization on a slip and cut applicator
US7770712B2 (en) 2006-02-17 2010-08-10 Curt G. Joa, Inc. Article transfer and placement apparatus with active puck
US9433538B2 (en) 2006-05-18 2016-09-06 Curt G. Joa, Inc. Methods and apparatus for application of nested zero waste ear to traveling web and formation of articles using a dual cut slip unit
US8172977B2 (en) 2009-04-06 2012-05-08 Curt G. Joa, Inc. Methods and apparatus for application of nested zero waste ear to traveling web
US8016972B2 (en) 2007-05-09 2011-09-13 Curt G. Joa, Inc. Methods and apparatus for application of nested zero waste ear to traveling web
US10456302B2 (en) 2006-05-18 2019-10-29 Curt G. Joa, Inc. Methods and apparatus for application of nested zero waste ear to traveling web
US7780052B2 (en) 2006-05-18 2010-08-24 Curt G. Joa, Inc. Trim removal system
US9622918B2 (en) 2006-05-18 2017-04-18 Curt G. Joe, Inc. Methods and apparatus for application of nested zero waste ear to traveling web
US9944487B2 (en) 2007-02-21 2018-04-17 Curt G. Joa, Inc. Single transfer insert placement method and apparatus
US9550306B2 (en) 2007-02-21 2017-01-24 Curt G. Joa, Inc. Single transfer insert placement and apparatus with cross-direction insert placement control
EP2486904A3 (fr) 2007-02-21 2013-02-27 Joa, Curt G., Inc. Procédé et appareil de positionnement d'insert de transfert unique
US8398793B2 (en) 2007-07-20 2013-03-19 Curt G. Joa, Inc. Apparatus and method for minimizing waste and improving quality and production in web processing operations
US9387131B2 (en) 2007-07-20 2016-07-12 Curt G. Joa, Inc. Apparatus and method for minimizing waste and improving quality and production in web processing operations by automated threading and re-threading of web materials
US8182624B2 (en) 2008-03-12 2012-05-22 Curt G. Joa, Inc. Registered stretch laminate and methods for forming a registered stretch laminate
US8673098B2 (en) 2009-10-28 2014-03-18 Curt G. Joa, Inc. Method and apparatus for stretching segmented stretchable film and application of the segmented film to a moving web
US9089453B2 (en) 2009-12-30 2015-07-28 Curt G. Joa, Inc. Method for producing absorbent article with stretch film side panel and application of intermittent discrete components of an absorbent article
US8460495B2 (en) 2009-12-30 2013-06-11 Curt G. Joa, Inc. Method for producing absorbent article with stretch film side panel and application of intermittent discrete components of an absorbent article
US8663411B2 (en) 2010-06-07 2014-03-04 Curt G. Joa, Inc. Apparatus and method for forming a pant-type diaper with refastenable side seams
US9603752B2 (en) 2010-08-05 2017-03-28 Curt G. Joa, Inc. Apparatus and method for minimizing waste and improving quality and production in web processing operations by automatic cuff defect correction
CN102373643A (zh) * 2010-08-09 2012-03-14 河南省江河纸业有限责任公司 一种真空压榨辊
US9566193B2 (en) 2011-02-25 2017-02-14 Curt G. Joa, Inc. Methods and apparatus for forming disposable products at high speeds with small machine footprint
US8656817B2 (en) 2011-03-09 2014-02-25 Curt G. Joa Multi-profile die cutting assembly
USD684613S1 (en) 2011-04-14 2013-06-18 Curt G. Joa, Inc. Sliding guard structure
US8820380B2 (en) 2011-07-21 2014-09-02 Curt G. Joa, Inc. Differential speed shafted machines and uses therefor, including discontinuous and continuous side by side bonding
US10751220B2 (en) 2012-02-20 2020-08-25 Curt G. Joa, Inc. Method of forming bonds between discrete components of disposable articles
US20130215202A1 (en) * 2012-02-22 2013-08-22 Kevin David Koller Helical dryer path for a print substrate web
US9809414B2 (en) 2012-04-24 2017-11-07 Curt G. Joa, Inc. Elastic break brake apparatus and method for minimizing broken elastic rethreading
US9283683B2 (en) 2013-07-24 2016-03-15 Curt G. Joa, Inc. Ventilated vacuum commutation structures
USD703711S1 (en) 2013-08-23 2014-04-29 Curt G. Joa, Inc. Ventilated vacuum communication structure
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USD704237S1 (en) 2013-08-23 2014-05-06 Curt G. Joa, Inc. Ventilated vacuum commutation structure
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CN106567025B (zh) * 2016-10-26 2018-11-16 南京不老村旅游开发有限公司 一种光伏焊带生产设备上的导带辊
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Title
None

Also Published As

Publication number Publication date
CN1168938A (zh) 1997-12-31
DE19615227A1 (de) 1997-10-23
CA2202951A1 (fr) 1997-10-18
US5829164A (en) 1998-11-03
EP0802277A3 (fr) 1998-04-08

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