EP0425926B1 - Saugwalzenanordnung zum Fördern einer Materialbahn - Google Patents

Saugwalzenanordnung zum Fördern einer Materialbahn Download PDF

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Publication number
EP0425926B1
EP0425926B1 EP90120072A EP90120072A EP0425926B1 EP 0425926 B1 EP0425926 B1 EP 0425926B1 EP 90120072 A EP90120072 A EP 90120072A EP 90120072 A EP90120072 A EP 90120072A EP 0425926 B1 EP0425926 B1 EP 0425926B1
Authority
EP
European Patent Office
Prior art keywords
roller body
material web
cylindrical
stator
edges
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 - Lifetime
Application number
EP90120072A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0425926A1 (de
Inventor
Joachim Dipl.-Ing. Mittmeyer
Waldemar Urschel
Johann Dipl.-Ing. Baarfüsser
Lothar Dipl.-Ing. Langer
Rainer Dipl.-Ing. Röhlig
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.)
Basf Magnetics basf Magnetics (holding) GmbH GmbH
Original Assignee
BASF Magnetics 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 BASF Magnetics GmbH filed Critical BASF Magnetics GmbH
Publication of EP0425926A1 publication Critical patent/EP0425926A1/de
Application granted granted Critical
Publication of EP0425926B1 publication Critical patent/EP0425926B1/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
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/136—Details of longitudinal profile with canals
    • B65H2404/1362—Details of longitudinal profile with canals vacuum

Definitions

  • the porous cylinder jacket of a web guide roller consists of porous sintered metal or ceramic material with a pore size between 1-45 ⁇ m, the cylindrical outer surface being brought to a surface quality free of elevations.
  • DE-A-14 74 973 proposes an inner ring body consisting of two chambers. in which the part wrapped in the web is subjected to negative pressure and the other part is under atmospheric pressure and cross-sectional constrictions are provided between the two chambers.
  • the suction roller arrangement consists of a hollow cylindrical roller body (1), preferably made of stainless VA steel, which is firmly connected at the end faces to the steel disks (13, 14) via screw connections (7).
  • the roller body is rotatably mounted on the shaft (8, 15) via ball bearings (4, 5, 5 '). It consists of porous sintered metal and is machined on the outside diameter to run exactly to the finished inside diameter.
  • the roller body rotates around the stator (2), which, as shown in FIG.
  • the radial distance (a) from the rotor (1) and the polygon surfaces in the area of the holes (10) is, as can be seen in FIG. 3, about 10 mm and at the polygon edges (16) and in the edge areas (9, 9 ') 0 , 1 to 0.3 mm (b) in order to draw in as little leak air as possible.
  • the pore size of the sintered metal roller body (1) in the area of the polygon surfaces of the stator is between 30 to 70 ⁇ m and in the edge areas (9, 9 ') is preferably between 10 to 30 ⁇ m.
  • the edge areas (9, 9 ') of the sintered body can decrease continuously to zero starting from the lateral edges of the stator (2) to the edge of the roller body (1).
  • the intake manifold (3) is pressurized with a negative pressure of 60 - 90 mbar using a normal radial fan (not shown).
  • roller bodies known from the prior art and consisting of sintered metal and having pore sizes of 2 to 5 ⁇ m require a pressure of up to 6 bar in order to achieve sufficient torque transmission for the material web.
  • the cylindrical outside (17) of the roller body (1) is brought to the required elevation-free surface quality by a triple machining process, namely turning, grinding and subsequent polishing.
  • This also has the advantage that the pore size on the surface of the roller body is somewhat smaller than on the inside, so that dust and abrasion particles from the material web, which penetrate into the roller body, are sucked through the pores of the sintered material and released into the exhaust air.
  • the surface quality of the roller body is improved by the machining process so that it is also suitable for the transport of extremely sensitive magnetic tapes at high machine speeds.
  • the smaller pore size of the edge regions (9, 9 ') of the roller body improves the adhesion of the material web to the edges.
  • this also increases the mechanical strength in the edge regions of the roller body for the attachment of the fastening threads for the screws (7).
  • roller bodies according to the invention can be located at all possible places on a pouring machine, for example at the casting station, before and after drying, as well as calendering and when winding up the finished material web. With its coated front side or with its coated or uncoated back side, the material web can be guided over the roller bodies as soon as the coating has dried.
  • the cylindrical surface of the sintered tube body had a width of 760 mm.
  • the vacuum inside the stator was 75 mbar.
  • the wrap angle of the web was 260 °.
  • the pore size in the middle area was 50 ⁇ m and in the 100 mm wide edge areas on both sides 20 ⁇ m.
  • the surface of the magnetic tape touching the roller body showed no marks or deformations and no measurable abrasion and the pores of the roller body did not clog even after months of production.

Landscapes

  • Advancing Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP90120072A 1989-11-01 1990-10-19 Saugwalzenanordnung zum Fördern einer Materialbahn Expired - Lifetime EP0425926B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3936286 1989-11-01
DE3936286A DE3936286A1 (de) 1989-11-01 1989-11-01 Saugwalzenanordnung zum foerdern einer materialbahn

Publications (2)

Publication Number Publication Date
EP0425926A1 EP0425926A1 (de) 1991-05-08
EP0425926B1 true EP0425926B1 (de) 1993-08-25

Family

ID=6392604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120072A Expired - Lifetime EP0425926B1 (de) 1989-11-01 1990-10-19 Saugwalzenanordnung zum Fördern einer Materialbahn

Country Status (4)

Country Link
EP (1) EP0425926B1 (enrdf_load_stackoverflow)
JP (1) JPH03166152A (enrdf_load_stackoverflow)
KR (1) KR910009547A (enrdf_load_stackoverflow)
DE (2) DE3936286A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20020772U1 (de) * 2000-12-07 2002-04-18 Brückner Maschinenbau GmbH, 83313 Siegsdorf Saugwalze

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9420707U1 (de) * 1994-12-24 1995-02-16 Steuer, Armin, 71111 Waldenbuch Präge-Rotationsmaschine
US5727749A (en) * 1996-02-05 1998-03-17 Presstek, Inc Automatic plate-loading cylinder with constant circumferential tension
WO1998008765A1 (de) * 1996-08-26 1998-03-05 Emtec Magnetics Gmbh Bahnführungswalze für eine warenbahn
JP5352034B2 (ja) * 2009-02-16 2013-11-27 日本タングステン株式会社 吸着ロール

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB983951A (en) * 1959-12-14 1965-02-24 Alexander Samuel Baxter Improvements in and relating to the feeding of thin films
GB988887A (en) * 1961-05-01 1965-04-14 Eastman Kodak Co Web guiding and supporting means
DE1474973B2 (de) * 1966-08-01 1970-08-13 Agfa-Gevaert Ag, 5090 Leverkusen Saugwalze zum Übertragen eines Drehmomentes
US3630424A (en) * 1970-06-17 1971-12-28 Eastman Kodak Co Drilled nonported vacuum drum
US4277010A (en) * 1980-04-10 1981-07-07 John Dusenbery Company, Inc. Vacuum roller for transporting a web

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20020772U1 (de) * 2000-12-07 2002-04-18 Brückner Maschinenbau GmbH, 83313 Siegsdorf Saugwalze

Also Published As

Publication number Publication date
DE3936286A1 (de) 1991-05-02
EP0425926A1 (de) 1991-05-08
DE59002470D1 (de) 1993-09-30
DE3936286C2 (enrdf_load_stackoverflow) 1991-08-22
JPH03166152A (ja) 1991-07-18
KR910009547A (ko) 1991-06-28

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