EP0513432A1 - Dispositif pour déterminer la flèche d'une bande de matériau en cours de défilement, perpendiculairement à sa longueur - Google Patents

Dispositif pour déterminer la flèche d'une bande de matériau en cours de défilement, perpendiculairement à sa longueur Download PDF

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Publication number
EP0513432A1
EP0513432A1 EP91115204A EP91115204A EP0513432A1 EP 0513432 A1 EP0513432 A1 EP 0513432A1 EP 91115204 A EP91115204 A EP 91115204A EP 91115204 A EP91115204 A EP 91115204A EP 0513432 A1 EP0513432 A1 EP 0513432A1
Authority
EP
European Patent Office
Prior art keywords
rollers
web
bearing
measuring
sag
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Withdrawn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
EP91115204A
Other languages
German (de)
English (en)
Inventor
Werner Dr. Feistkorn
Klaus-Peter Voss
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0513432A1 publication Critical patent/EP0513432A1/fr
Withdrawn legal-status Critical Current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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/042—Sensing the length of a web loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally

Definitions

  • the invention relates to a device for determining the sag of a running material web transverse to its longitudinal direction.
  • the object of the invention is to provide devices for determining the sag of a running material web transversely to its longitudinal direction.
  • this object is achieved according to a first proposal in a device of the generic type in that a bearing of a sensing roller is displaceably guided transversely to its axis of rotation against spring force into a housing and a device measuring the displacement path is provided.
  • the tracer roller can be placed against the web in the area to be measured, so that the deviation of the web from its desired position can be measured, whereby then the target position, for example from the position of the guide rollers, is assumed to be known.
  • the tracer roller presses the area to be measured, which is formed by a width section, out of the plane defined by the web edges, the web sag being determined from the extent to which the selected width section is pressed out of the reference plane.
  • the bearing is expediently fork-shaped, the web part of the bearing fork being provided on the side opposite the bearing legs with two rods which are guided in the housing with low friction in bores.
  • Linear ball bearings can be provided for low-friction guidance of the rods.
  • the rods enforce coiled springs which are supported on the one hand on the bearing fork and on the other hand on annular stops fixed to the housing, the rods being secured by stops against complete ejection from the bores.
  • This device can be an inductive displacement transducer, for example.
  • the object is achieved in that a roll which can be positively adjusted to the web is provided, the roll of which is supporting and rotatably mounted in a supporting part and connected to a tachometer.
  • a tachometer is thus a length measuring device that measures the difference in length to the unstretched strip parts, which are specified by the edge areas of the web.
  • the web sag can be determined from the different measured immersion depths of the feeler rollers or the different speeds of the rollers, without having to specify setpoints, which are not measured in each case.
  • rollers are expediently pivoted on arms which are pivotable about axes parallel to the axes of rotation.
  • the arms can be mounted on levers that are rotatably mounted on a shaft that is fixed to the frame. Furthermore, the arms can be held by springs against stops of the levers.
  • the wells are provided with a swivel device for starting and stopping the rollers.
  • the outer arms are axially displaceably guided on the shaft and the like by a spindle drive. are adjustable in their distance to the middle arm.
  • At least three rollers or rollers of the same diameter are mounted on a fixed axis, which are mounted on force measuring bearings and can be adjusted to the web.
  • the force measuring bearings of the at least three rollers are pressurized to different extents so that the web sag can be determined from the different measured contact forces.
  • FIG. 3 also shows that a further rod 9 is connected to a bracket 2 and is part of a length measuring device, which can be an inductive displacement transducer, for example.
  • This length measuring device 10 provides accordingly, to what extent the roll 1 is displaced from the film web 11 in the direction of the housing 4.
  • the sag of the film web 1 can be determined on the basis of the values determined by the three length measuring devices used.
  • the film web 11 runs over two guide rollers 12 and 13, the pressure rollers 1 being inserted in the area between these two rollers.
  • the individual housings 4 of the pressure rollers 1 have tabs 14, via which the housings 4 are connected in an articulated manner to levers 15.
  • the ends of the levers 15 facing away from the housings 4 are fixedly connected to bearing blocks 16, the two outer bearing blocks 16 being slidably mounted on the axis 17.
  • two brackets 18 and 19 are fastened on the axis 17, in which the two ends of a threaded spindle 20 are drivably mounted, namely a gear 21 is fixedly connected to the threaded spindle 20 at one end, which meshes with a gear 22 which by a motor 23 can be driven.
  • the motor 23 is flanged to the holder 18.
  • a tension spring 24 acts on the end of each housing 4 facing the film web 11 and presses the respective housing 4 against a stop 25 which is connected to the associated lever 15.
  • the axis 17, which is mounted in the housing walls 26 and 27, projects outward at one end from the housing wall 27.
  • a pivot lever 28 On this protruding end 17 ', a pivot lever 28 is firmly attached, which has a resilient locking pin 29 having.
  • This resilient locking pin 29 can be pulled out of a bore in the housing side wall 27 against the force of a spring (not shown) in the direction of arrow 31 via the knob 30, so that the entire device about the axis 17 in the counterclockwise direction via the pivot lever 28 (FIG. 1) can be pivoted, whereupon the resilient locking bolt 29 snaps into a corresponding second hole in the housing side wall.
  • the threaded spindle 20 has an opposite pitch, so that when the motor 23 is actuated, the two outer bearing blocks can be moved towards and away from one another, depending on the width of the web 11 to be measured.
  • the exemplary embodiment according to FIGS. 4 and 5 is designed with regard to the design, storage and adjustment of the bearing blocks 16 as in the exemplary embodiment according to FIGS. 1 to 3.
  • three measuring rollers 32 arranged next to one another are used here used, which determines the length of the film web 11 running on the measuring rollers 32 per unit of time via displacement transducers 33. Differences between the three measurement signals consequently provide direct information about the extent of the sag of the film web 11.
  • the measurement rollers 32 are mounted in levers 34 which are connected in an articulated manner to further levers 35, the latter being firmly connected to the bearing blocks 16 are welded.
  • the levers 34 are also pulled in this embodiment by springs 24 'against the stops 25'. Additional stop pins prevent the Measuring rollers 32 can fluctuate too far counterclockwise, based on FIG. 4.
  • FIG. 6 shows a further example, and it can be seen from this figure that a hollow shaft 37 is firmly connected to the two side walls 26 'and 27'.
  • Discs 38 which are encompassed by force measuring bearings 39, sit immovably on this hollow axis 37.
  • Two adjacent force measuring bearings 39 each carry a pipe section 40.
  • a total of 6 force measuring bearings and consequently three pipe sections 40 are provided.
  • the film web 11 rests with pressure on these three pipe sections 40, the pressure exerted by the web 11 on the pipe sections 40 differing depending on the sag.
  • For the purpose of transmitting the signals 38 lines 41 are connected to the disks, which are guided through the hollow shaft 37 to the outside.

Landscapes

  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP91115204A 1990-10-10 1991-09-09 Dispositif pour déterminer la flèche d'une bande de matériau en cours de défilement, perpendiculairement à sa longueur Withdrawn EP0513432A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4032158A DE4032158A1 (de) 1990-10-10 1990-10-10 Vorrichtung zur ermittlung des durchhanges einer laufenden materialbahn quer zu ihrer laengsrichtung
DE4032158 1990-10-10

Publications (1)

Publication Number Publication Date
EP0513432A1 true EP0513432A1 (fr) 1992-11-19

Family

ID=6416018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115204A Withdrawn EP0513432A1 (fr) 1990-10-10 1991-09-09 Dispositif pour déterminer la flèche d'une bande de matériau en cours de défilement, perpendiculairement à sa longueur

Country Status (5)

Country Link
US (1) US5317913A (fr)
EP (1) EP0513432A1 (fr)
JP (1) JPH04327454A (fr)
CA (1) CA2052018A1 (fr)
DE (1) DE4032158A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10249396A1 (de) * 2002-10-23 2004-05-06 Voith Paper Patent Gmbh Anordnung zur indirekten oder direkten Erfassung eines lokalen Bahnzugs einer laufenden Materialbahn an wenigstens einer Bahn-Querposition

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778724A (en) * 1995-09-07 1998-07-14 Minnesota Mining & Mfg Method and device for monitoring web bagginess
WO1999034968A2 (fr) * 1998-01-12 1999-07-15 Ranpak Corp. Convertisseur de materiaux de calage
US6272908B1 (en) * 1999-03-23 2001-08-14 Eastman Kodak Company Flexural probe and method for examining a moving sensitive web surface
JP5306640B2 (ja) * 2007-12-17 2013-10-02 明産株式会社 シートのたるみ評価方法および評価装置
DE102019131553A1 (de) * 2019-11-22 2021-05-27 Audi Ag Vorrichtung zum Erfassen einer Verbindungsstelle an einem aus einer Vielzahl von miteinander verbundenen Strangabschnitten bestehenden flexiblen Materialstrang, insbesondere einem Dichtmaterialstrang
CN112797881A (zh) * 2020-12-04 2021-05-14 国网江苏省电力有限公司盐城供电分公司 一种基于无人机磁场测量的架空线路弧垂检测预警方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB232852A (en) * 1924-09-11 1925-04-30 Frederick Grafton Lougee Improvements in or relating to tension indicators for paper webs of printing machines
US2032176A (en) * 1932-04-12 1936-02-25 Westinghouse Electric & Mfg Co Control system
US3889895A (en) * 1973-12-26 1975-06-17 Air Trol Systems Inc Web-tension sensing and control apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674127A (en) * 1952-05-17 1954-04-06 Olin Ind Inc Flatness indicator for cellophane film
US2923150A (en) * 1957-12-16 1960-02-02 American Viscose Corp Tension measuring apparatus
US3385106A (en) * 1966-06-30 1968-05-28 Western Publishing Company Inc Method and means for detecting sag in a sheet
GB1531135A (en) * 1976-08-12 1978-11-01 Secr Defence Testing of sheet materials
US4970895A (en) * 1985-05-02 1990-11-20 Measurex Corporation System and method for the determination of certain physical characteristics of sheet materials.
US5123284A (en) * 1990-09-26 1992-06-23 Edinburgh John D Method and apparatus for mesurement of tension in an elastic surface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB232852A (en) * 1924-09-11 1925-04-30 Frederick Grafton Lougee Improvements in or relating to tension indicators for paper webs of printing machines
US2032176A (en) * 1932-04-12 1936-02-25 Westinghouse Electric & Mfg Co Control system
US3889895A (en) * 1973-12-26 1975-06-17 Air Trol Systems Inc Web-tension sensing and control apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10249396A1 (de) * 2002-10-23 2004-05-06 Voith Paper Patent Gmbh Anordnung zur indirekten oder direkten Erfassung eines lokalen Bahnzugs einer laufenden Materialbahn an wenigstens einer Bahn-Querposition

Also Published As

Publication number Publication date
DE4032158A1 (de) 1992-04-16
CA2052018A1 (fr) 1992-04-11
US5317913A (en) 1994-06-07
JPH04327454A (ja) 1992-11-17

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