GB1577882A - Vacuum roller - Google Patents

Vacuum roller Download PDF

Info

Publication number
GB1577882A
GB1577882A GB1906077A GB1906077A GB1577882A GB 1577882 A GB1577882 A GB 1577882A GB 1906077 A GB1906077 A GB 1906077A GB 1906077 A GB1906077 A GB 1906077A GB 1577882 A GB1577882 A GB 1577882A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
roller
vacuum
shell
body
material
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.)
Expired
Application number
GB1906077A
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.)
Bachofen and Meier AG Maschinenfabrik
Original Assignee
Bachofen and Meier AG Maschinenfabrik
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

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00Press section of machines for making continuous webs of paper
    • D21F3/02Wet presses
    • D21F3/10Suction rolls, e.g. couch rolls
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00Press section of machines for making continuous webs of paper
    • D21F3/02Wet presses
    • D21F3/10Suction rolls, e.g. couch rolls
    • D21F3/105Covers thereof

Description

(54) VACUUM ROLLER (71) We, BACHOFEN & MEIER MASCHINENFABRIK, a Body Corporate organised under the Laws of Switzerland, of CH-8180 Bulach, Switzerland, do hereby declare the invention, for which we pray that a patent amy be granted to us, and the method by which it is to be performed, to be described in and by the following statement: This invention relates to a rotatable vacuum roller assembly adaptable for non-slip feeding of sheet material such as paper, carton, foil and the like.

The conventional plants for paper, carton and foil finishing employ, amongst other things, vacuum rollers for the conveyance of the foil-like material. It has never been quite possible with the conventional types of vacuum roller to eliminate slip occurring during the conveyance of the material. In particular, as far as the processing of foil is concerned, the stretching process is not satisfactory until the slip effect can be eliminated.

Tests in respect of complete elimination of the slip effect, using the present invention, have produced a satisfactory result.

According to the invention we provide a rotatable vacuum roller assembly adaptable for non-slip feeding of sheet material such as paper, carton, foil and the like, said roller assembly comprising: a rotatable, cylindrically shaped hollow roller body for supporting and feeding said sheet material, a cylindrically-shaped shell of resiliently deformable material for enclosing said roller body, said resilient shell having an inner surface engaging an outer surface of said roller body for joint rotation of said shell and roller body about an axis extending longitudinally through said roller body, vacuum transfer means for transmitting suction force from a vacuum source to an outer surface of said roller assembly, a deformable slit means extending through an outer surface of said resilient shell into fluid communication with said vacuurr transfer means, said slit means including opposite slit wall portions in abutting contact with one another, with said wall portions being separable a variable distance responsive to tension generated by contact with a specific sheet material to provide a suction force across the shell surface to draw said sheet material into non-slip contact with said rotatable roller assembly.

Two specific embodiments of the invention are shown in the accompanying drawings, wherein Figure 1 shows a first embodiment of the vacuum roller, seen in section along line I-I of Figure 2; Figure 2 shows the vacuum roller of Figure 1, seen partly in axial section along line II-II of Figure 1; Figure 3 is a part section of Figure 1, on a larger scale; Figure 4 shows a second embodiment of the vacuum roller, seen in part section along line IV-IV of Figure 5; Figure 5 shows the vacuum roller of Figure 4, seen partly in axial section along line V-V of Figure 4, and Figure 6 is a part section of Figure 4, on a larger scale.

The first embodiment according to Figures 1 to 3 has a roller body 1 consisting of a hollow cylindrical steel body which is rotatably supported on a fixed cylindrical bearing member 2 and which is driven in the direction of the arrow A (Figure 1). The hollow cylindrical roller body 1 is provided with a shell 3 of resiliently deformable material. Suction ports 4 are provided in the roller body 1, and suction ports 4' are arranged in the resilient shell 3, and the ports 4' are arranged in coinciding positions.Vacuum chambers of pie-shape 6 are separated from each other by radially extending separating walls 7 and each form a sector-shaped segment with an included anlge these vacuum chambers being inwardly in suction communication with the suction conduit 5 through an opening 8, and outwardly in communication with the material sheet 9 passing over the shell 3 through suction ports 4 and 4 respectively.

Over the zone of angle , the material 9 is in contact with the roller surface. During the rotation of the roller body 1 with the shell 3, the suction ports 4, 4' are only ever subjected to the vacuum effect of the vacuum chambers 6 over the contact zone with the material sheet 9. In the zone of the angle of the vacuum spaces 6, the suction ports 4, 4' cause a wellspread suction against the contact surface of the material and result in its even contact with the shell 3 of the roller body 1.

The suction ports 4! in the resilient shell 3 are connected with each other through narrow slits 10 in the diagonal direction and narrow slits 11 in the axial longitudinal direction of the roller. These slits 10, 11 extending through at least half of the shell thickness, guarantee an even distribution of the vacuum effect on the whole contact area of the material 9, and an even adhesion of the latter on the shell 3 of the roller body 1.

The embodiment represented in Figures 4 to 6 is distinguished from the first embodiment in that the suction ports 4 are only provided in the hollow cylindrical roller body 1, whilst the resilient shell 3 only contains the narrow slits 10, 11 which pass through the shell thickness so that they communicate with the suction ports 4 in the roller body 1, The suction ports 4 are intersected both by the diagonal slits 10 and by the longitudinal slits 11 so that these are in an evacuating communication with the suction ports 4. Slits 10, 11 permit sucking away of the air contained between the shell surface and the foil-like material 9, thereby ensuring good adhesion of the material on the vacuum roller and at the same time serving as a protection for the material.

The narrow slits 10, 11 in the resilient shell 3 connect the suction ports 4, 4! with each other in both the axial and the diagonal direction.

The narrow slits 10, 11 in the resilient shell slit wall portions abutting each other as shown in Figures 5 and 6 and which communicate with the suction ports are slightly opened during the conveyance of the foil-like material 9, due to the pulling action occurring during conveyance, this resulting in an increased area of application of the vacuum and the avoidance of undesired markings on the material.

WHAT WE CLAIM IS: 1. A rotatable vacuum roller assembly adaptable for non-slip feeding of sheet material such as paper, carton, foil and the like, said roller assembly comprising: a rotatable, cylindrically shaped hollow roller body for supporting and feeding said sheet material; a cylindrically-shaped shell of resiliently deformable material for enclosing said roller body, said resilient shell having an inner surface engaging an outer surface of said roller body for joint rotation of said shell and roller body about an axis extending longitudinally through said roller body; vacuum transfer means for transmitting suction force from a vacuum source to an outer surface of said roller assembly; a deformable slit means extending through an outer surface of said resilient shell into fluid communication with said vacuum transfer means;; said slit means including opposite slit wall portions in abutting contact with one another, with said wall portions being separable a variable distance responsive to tension generated by contact with a specific sheet material to provide a suction across the shell surface to draw said sheet material into non-slip contact with said rotatable roller assembly.

2. A roller assembly according to claim 1, wherein said roller body is rotatably mounted on a fixed bearing member.

3. A roller assembly according to claim 2, wherein said vacuum transfer means comprises at least one pie-shaped chamber formed with in said bearing member, said chamber having a curved outer surface extending adjacent to circumferential portion of roller body.

4. A roller assembly according to claim 2, wherein said vacuum transfer means comprises a plurality of pie-shaped, separate vacuum chambers longitudinally positioned within said bearing member, with radially extending bearing walls separating adjacent chambers and each chamber having a curved outer surface extending adjacent to a circumferential portion of said roller body.

5. A roller assembly according to claim 4, wherein said vacuum transfer means further comprises a conduit extending longitudinally through a centrally disposed portion of said bearing member, with at least one aperture extending between each vacuum chamber and said central conduit, said central conduit being in fluid communication with a vacuum source for transmitting suction force through said central conduit and said plurality of separate vacuum chambers.

6. A roller assembly according to claim 1, wherein said vacuum transfer means includes a plurality of apertures formed completely through said resilient shell, wherein each of said apertures coincides with a respective suction portion formed in said roller body.

7. A vacuum roller assembly according to claim 1 , wherein said slit means comprises a first plurality of slit-like openings extending longitudinally across said outer shell surface and a second plurality of slit-like openings extending helically about said outer shell surface.

8. A vacuum roller assembly according to claim 7, wherein said first and second plurality of slit-like openings each extend partially through said resilient shell from said outer surfaces.

9. A vacuum roller assembly according to claim 7, wherein said first and second plurality of slit-like openings each extend completely through said resilient shell.

10. A rotatable vacuum roller substantially as described herein with reference to Figures 1 to 3, or Figures 4 to 6 of the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

**WARNING** start of CLMS field may overlap end of DESC **. The suction ports 4! in the resilient shell 3 are connected with each other through narrow slits 10 in the diagonal direction and narrow slits 11 in the axial longitudinal direction of the roller. These slits 10, 11 extending through at least half of the shell thickness, guarantee an even distribution of the vacuum effect on the whole contact area of the material 9, and an even adhesion of the latter on the shell 3 of the roller body 1. The embodiment represented in Figures 4 to 6 is distinguished from the first embodiment in that the suction ports 4 are only provided in the hollow cylindrical roller body 1, whilst the resilient shell 3 only contains the narrow slits 10, 11 which pass through the shell thickness so that they communicate with the suction ports 4 in the roller body 1, The suction ports 4 are intersected both by the diagonal slits 10 and by the longitudinal slits 11 so that these are in an evacuating communication with the suction ports 4. Slits 10, 11 permit sucking away of the air contained between the shell surface and the foil-like material 9, thereby ensuring good adhesion of the material on the vacuum roller and at the same time serving as a protection for the material. The narrow slits 10, 11 in the resilient shell 3 connect the suction ports 4, 4! with each other in both the axial and the diagonal direction. The narrow slits 10, 11 in the resilient shell slit wall portions abutting each other as shown in Figures 5 and 6 and which communicate with the suction ports are slightly opened during the conveyance of the foil-like material 9, due to the pulling action occurring during conveyance, this resulting in an increased area of application of the vacuum and the avoidance of undesired markings on the material. WHAT WE CLAIM IS:
1. A rotatable vacuum roller assembly adaptable for non-slip feeding of sheet material such as paper, carton, foil and the like, said roller assembly comprising: a rotatable, cylindrically shaped hollow roller body for supporting and feeding said sheet material; a cylindrically-shaped shell of resiliently deformable material for enclosing said roller body, said resilient shell having an inner surface engaging an outer surface of said roller body for joint rotation of said shell and roller body about an axis extending longitudinally through said roller body; vacuum transfer means for transmitting suction force from a vacuum source to an outer surface of said roller assembly; a deformable slit means extending through an outer surface of said resilient shell into fluid communication with said vacuum transfer means;; said slit means including opposite slit wall portions in abutting contact with one another, with said wall portions being separable a variable distance responsive to tension generated by contact with a specific sheet material to provide a suction across the shell surface to draw said sheet material into non-slip contact with said rotatable roller assembly.
2. A roller assembly according to claim 1, wherein said roller body is rotatably mounted on a fixed bearing member.
3. A roller assembly according to claim 2, wherein said vacuum transfer means comprises at least one pie-shaped chamber formed with in said bearing member, said chamber having a curved outer surface extending adjacent to circumferential portion of roller body.
4. A roller assembly according to claim 2, wherein said vacuum transfer means comprises a plurality of pie-shaped, separate vacuum chambers longitudinally positioned within said bearing member, with radially extending bearing walls separating adjacent chambers and each chamber having a curved outer surface extending adjacent to a circumferential portion of said roller body.
5. A roller assembly according to claim 4, wherein said vacuum transfer means further comprises a conduit extending longitudinally through a centrally disposed portion of said bearing member, with at least one aperture extending between each vacuum chamber and said central conduit, said central conduit being in fluid communication with a vacuum source for transmitting suction force through said central conduit and said plurality of separate vacuum chambers.
6. A roller assembly according to claim 1, wherein said vacuum transfer means includes a plurality of apertures formed completely through said resilient shell, wherein each of said apertures coincides with a respective suction portion formed in said roller body.
7. A vacuum roller assembly according to claim 1 , wherein said slit means comprises a first plurality of slit-like openings extending longitudinally across said outer shell surface and a second plurality of slit-like openings extending helically about said outer shell surface.
8. A vacuum roller assembly according to claim 7, wherein said first and second plurality of slit-like openings each extend partially through said resilient shell from said outer surfaces.
9. A vacuum roller assembly according to claim 7, wherein said first and second plurality of slit-like openings each extend completely through said resilient shell.
10. A rotatable vacuum roller substantially as described herein with reference to Figures 1 to 3, or Figures 4 to 6 of the accompanying drawings.
GB1906077A 1976-05-20 1977-05-06 Vacuum roller Expired GB1577882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH632376 1976-05-20

Publications (1)

Publication Number Publication Date
GB1577882A true true GB1577882A (en) 1980-10-29

Family

ID=4307744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1906077A Expired GB1577882A (en) 1976-05-20 1977-05-06 Vacuum roller

Country Status (4)

Country Link
JP (1) JPS6031732B2 (en)
DE (1) DE2720871C2 (en)
FR (1) FR2352102B1 (en)
GB (1) GB1577882A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166219A (en) * 1984-10-26 1986-04-30 Winkler Duennebier Kg Masch Suction roller
WO2003053829A1 (en) * 2001-09-17 2003-07-03 Sca Hygiene Products Ab Method and apparatus for compressing fibrous bodies.
US6625853B2 (en) 2001-09-17 2003-09-30 Sca Hygiene Products Ab Method of compressing fibrous bodies
DE102005062348A1 (en) * 2005-12-23 2007-07-05 WINKLER + DüNNEBIER AG Control Head for a suction roll

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2857766C2 (en) * 1978-03-20 1984-05-03 Gerhard 4800 Bielefeld De Klemm
DE2812099C3 (en) * 1978-03-20 1982-02-25 Gerhard Ing.(Grad.) 4800 Bielefeld De Klemm
US4444209A (en) * 1981-04-10 1984-04-24 G.D Societa' Per Azioni Web guide device
JPS58151141U (en) * 1982-04-01 1983-10-11
JPS58166543U (en) * 1982-04-30 1983-11-07
JPS60142253U (en) * 1984-02-27 1985-09-20
JPS644760Y2 (en) * 1984-08-23 1989-02-07
JPH0751413B2 (en) * 1987-03-31 1995-06-05 帝人株式会社 Film transport device
DE3843246C1 (en) * 1988-12-22 1990-05-23 J.M. Voith Gmbh, 7920 Heidenheim, De
US4998658A (en) * 1988-12-27 1991-03-12 Eastman Kodak Company Drilled unported vacuum drum with a porous sleeve
FI97245C (en) * 1989-12-12 1996-11-11 Valmet Paper Machinery Inc paper machine suction roll
DE4332708C2 (en) * 1993-09-25 2000-05-04 Heidelberger Druckmasch Ag Device for sheet transport smear in sheet printing machines
DE29701986U1 (en) * 1997-02-05 1997-03-27 Voith Sulzer Papiermasch Gmbh suction
FI107248B (en) * 1998-11-04 2001-06-29 Metso Paper Inc The paper web winder, the winder roller and the reel-up method
DE19923655A1 (en) * 1999-05-22 2000-12-07 Klaus W Gerstenberg Device for treating track, sheet or plate-shaped substrate with electric corona discharge, has suction device that sucks out air between substrate and support surface with air suction opening(s)
DE10340445A1 (en) * 2003-09-02 2005-03-24 Voith Paper Patent Gmbh Machine for preparing or finishing e.g. paper strip has transverse roller, over which strip passes, roller being adjusted to vary direction of strip and section of free tension on strip being formed upstream from it
DE10355427A1 (en) * 2003-11-27 2005-06-23 Voith Paper Patent Gmbh Suction or blower roll
DE102008025685A1 (en) * 2008-05-29 2009-12-17 WINKLER + DüNNEBIER AG Vacuum roll with suction grooves
CN104736112A (en) * 2012-10-23 2015-06-24 宝洁公司 Methods for transferring discrete articles onto a web

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE108418C (en) *
DE276376C (en) *
DE100107C (en) *
DE667334C (en) * 1935-11-26 1938-11-09 Banning & Seybold Akt Ges Masc Zellensaugwalze for roller presses for dewatering of paper webs
GB983951A (en) * 1959-12-14 1965-02-24 Alexander Samuel Baxter Improvements in and relating to the feeding of thin films
FR1361432A (en) * 1963-04-03 1964-05-22 Neyrpic Ets Improvements to the vacuum rolls presses for web materials
DE1474973B2 (en) * 1966-08-01 1970-08-13
GB1157407A (en) * 1967-05-15 1969-07-09 Griffith Rubber Mills Improvements in or relating to Suction Rolls for the Press Section of a Paper Machine
GB1220126A (en) * 1968-05-10 1971-01-20 Millspaugh Ltd Improvements in or relating to paper-making machines
US3562883A (en) * 1968-06-26 1971-02-16 Shogo Kobayashi Suction press roll for papermaking
FR2219665A5 (en) * 1973-02-28 1974-09-20 Bertin & Cie
US3942788A (en) * 1974-06-13 1976-03-09 Bell & Howell Company Sheet material transport equipment
DE2443663C3 (en) * 1974-09-12 1981-01-15 Basf Ag, 6700 Ludwigshafen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166219A (en) * 1984-10-26 1986-04-30 Winkler Duennebier Kg Masch Suction roller
WO2003053829A1 (en) * 2001-09-17 2003-07-03 Sca Hygiene Products Ab Method and apparatus for compressing fibrous bodies.
US6625853B2 (en) 2001-09-17 2003-09-30 Sca Hygiene Products Ab Method of compressing fibrous bodies
DE102005062348A1 (en) * 2005-12-23 2007-07-05 WINKLER + DüNNEBIER AG Control Head for a suction roll

Also Published As

Publication number Publication date Type
JP1309446C (en) grant
DE2720871A1 (en) 1977-12-01 application
FR2352102A1 (en) 1977-12-16 application
DE2720871C2 (en) 1984-02-02 grant
JPS5311463A (en) 1978-02-01 application
FR2352102B1 (en) 1981-04-30 grant
JPS6031732B2 (en) 1985-07-24 grant

Similar Documents

Publication Publication Date Title
US4254947A (en) Sheet overlap device
US5230268A (en) Device for cross cutting and/or perforating of a web
US4823536A (en) Handling method and device
US5109741A (en) Knife roller
US4453465A (en) Web turning rod having air flow control means
US4114520A (en) Apparatus for making bags from a continuously fed thermoplastic tubular web of film
US4549485A (en) Paper web seizing apparatus for use with printing machinery
US4394898A (en) Method and apparatus for providing balanced stacks of diapers
US4043495A (en) Air cushioned turn bar
US5419224A (en) Device for the controlled removal of pieces of waste material
US4207998A (en) Vacuum roller
EP0212879A1 (en) Apparatus for adjusting a cigarette having variable smoking characteristics
US3013487A (en) Apparatus for tension control
GB1524477A (en) Labyrinth lubricant seal for belt conveyor roll
US5241907A (en) Sheet transport drum with sheet suction holding surface
US3830143A (en) Method and apparatus for rewinding loose end portions of loosely wound spools
US4484905A (en) Zig-zag folding machines
US4334652A (en) Expandible devices for internally gripping cores or the like
US4524658A (en) Apparatus for producing packaging blanks
JPS5552840A (en) Sheet material conveying apparatus
US4438774A (en) Cigarette conveying drums
US4666139A (en) Vacuum system for combination fold-off control
US2876961A (en) Roll shaft
US3142428A (en) Vacuum roll
US4219030A (en) Aeration groove filter

Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19970505