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CA2150021A1 - A Sheet Break Detector Apparatus - Google Patents

A Sheet Break Detector Apparatus

Info

Publication number
CA2150021A1
CA2150021A1 CA2150021A CA2150021A CA2150021A1 CA 2150021 A1 CA2150021 A1 CA 2150021A1 CA 2150021 A CA2150021 A CA 2150021A CA 2150021 A CA2150021 A CA 2150021A CA 2150021 A1 CA2150021 A1 CA 2150021A1
Authority
CA
Canada
Prior art keywords
transducer
sheet
vacuum
vacuum level
sheet break
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
CA2150021A
Other languages
French (fr)
Other versions
CA2150021C (en
Inventor
Jeffrey H. Pulkowski
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.)
Beloit Technologies Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2150021A1 publication Critical patent/CA2150021A1/en
Application granted granted Critical
Publication of CA2150021C publication Critical patent/CA2150021C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00Other details of machines for making continuous webs of paper
    • D21F7/04Paper-break control devices

Landscapes

  • Paper (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

A sheet break detector apparatus (10) is disclosed for detecting a sheet break in a dryer section (12) of a paper machine.
The apparatus (10) includes a vacuum transducer (14) which is sensitive to the vacuum level within a vacuum roll (16) of a dryer section (12). The transducer (14) detects only a sudden change in vacuum level within the vacuum roll (16) resulting from a sheet break rather than a relatively gradual change in vacuum level resulting from an operator augmented vacuum level change. A guide device is connected to the transducer (14) and responsive to the transducer (14) for redirecting the sheet to a broke chute (22) upstream relative to the transducer (14) when the transducer (14) detects the sudden change in vacuum level.
The arrangement is such that excessive wind-up of the broken sheet (W) around a dryer (24) of the dryer section (12) is inhibited.
CA002150021A 1992-11-25 1993-10-19 A sheet break detector apparatus Expired - Fee Related CA2150021C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98157992A 1992-11-25 1992-11-25
US07/981,579 1992-11-25

Publications (2)

Publication Number Publication Date
CA2150021A1 true CA2150021A1 (en) 1994-06-09
CA2150021C CA2150021C (en) 1998-09-01

Family

ID=25528481

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002150021A Expired - Fee Related CA2150021C (en) 1992-11-25 1993-10-19 A sheet break detector apparatus

Country Status (13)

Country Link
EP (1) EP0660898B1 (en)
JP (1) JP2562799B2 (en)
KR (1) KR950704569A (en)
CN (1) CN1035076C (en)
BR (1) BR9307486A (en)
CA (1) CA2150021C (en)
DE (2) DE69304545T2 (en)
FI (1) FI952548A0 (en)
MX (1) MX9307387A (en)
MY (1) MY110025A (en)
PL (1) PL172455B1 (en)
TW (1) TW229270B (en)
WO (1) WO1994012724A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI109235B (en) * 1998-04-27 2002-06-14 Fotocomp Oy A method for determining a paper web release angle and / or profile
DE10042243A1 (en) * 2000-08-28 2002-03-14 Voith Paper Patent Gmbh Web break monitoring method
DE102004046795A1 (en) 2004-09-27 2006-04-06 Voith Paper Patent Gmbh Device and method for monitoring the transfer of a material web and especially the broadening of the width of a transfer strip on a demolition of the transfer strip or the material web
DE102007000679A1 (en) 2007-11-09 2009-05-14 Voith Patent Gmbh Method and device for detecting a crack and / or a modulus of elasticity of a material web
EP3290582B1 (en) 2016-08-29 2019-03-13 Siemens Aktiengesellschaft Method for operating a machine for manufacturing and/or treating a material web
CN107164987B (en) * 2017-07-14 2019-02-19 河南卷烟工业烟草薄片有限公司 A kind of large cylinder broken and collecting paper scrap device
JP6902270B2 (en) * 2017-10-02 2021-07-14 デュプロ精工株式会社 Band-shaped object forming device
CN110877839B (en) * 2018-09-06 2022-03-25 西门子(中国)有限公司 Method and equipment for processing broken paper
EP3699356A1 (en) * 2019-02-25 2020-08-26 Siemens Aktiengesellschaft Method and device for detecting a tear in a fibrous web, industrial equipment and computer program product
CN110906972B (en) * 2019-10-28 2021-06-18 浙江大学山东工业技术研究院 Automatic paper monitoring and breaking prevention system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1725108A (en) * 1926-03-10 1929-08-20 Alvin W Smith Method and apparatus for making paper
US1838603A (en) * 1929-07-11 1931-12-29 Sr George S Witham Paper making machine
US3097993A (en) * 1961-05-23 1963-07-16 Dominion Eng Works Ltd Apparatus for automatic knock-off shower for paper machine

Also Published As

Publication number Publication date
MX9307387A (en) 1994-06-30
EP0660898B1 (en) 1996-09-04
WO1994012724A1 (en) 1994-06-09
DE69304545D1 (en) 1996-10-10
DE660898T1 (en) 1996-01-18
JP2562799B2 (en) 1996-12-11
KR950704569A (en) 1995-11-20
CN1088647A (en) 1994-06-29
BR9307486A (en) 1999-08-24
PL308218A1 (en) 1995-07-24
FI952548A (en) 1995-05-24
PL172455B1 (en) 1997-09-30
FI952548A0 (en) 1995-05-24
DE69304545T2 (en) 1997-02-06
CA2150021C (en) 1998-09-01
TW229270B (en) 1994-09-01
CN1035076C (en) 1997-06-04
EP0660898A1 (en) 1995-07-05
JPH07507604A (en) 1995-08-24
MY110025A (en) 1997-11-29

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed