US3892344A - Method and device for regulating the tension and length of a sheet of material - Google Patents

Method and device for regulating the tension and length of a sheet of material Download PDF

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Publication number
US3892344A
US3892344A US431979A US43197974A US3892344A US 3892344 A US3892344 A US 3892344A US 431979 A US431979 A US 431979A US 43197974 A US43197974 A US 43197974A US 3892344 A US3892344 A US 3892344A
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United States
Prior art keywords
sheet
upstream
downstream
engaging means
roller
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Expired - Lifetime
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US431979A
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English (en)
Inventor
Louis Corse
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Individual
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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
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/025—Registering devices
    • 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
    • B65H2404/14—Roller pairs
    • B65H2404/142—Roller pairs arranged on movable frame
    • B65H2404/1421—Roller pairs arranged on movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • B65H2404/14211—Roller pairs arranged on movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis the axis being one the roller axis, i.e. orbiting 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
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B65H2511/112—Length of a loop, e.g. a free loop or a loop of dancer rollers

Definitions

  • ABSTRACT [30] Foreign Application Priority Data A h t f I f s ee 0 materia passing rom an upstream operat- 1973 France 7300899 ing station to a downstream operating station is regu- [52] U S Cl 226/44 226/ 4 lated as to its tension and length by a pair of jockey [51] B65h 25/04 rollers one on each side of a drum, one roller being ⁇ 58] Fie'ld 1 H3 H4 biased against the sheet and the other being free but controlled in position by a servo-mechanism from the [56] References Cited first roller, the second roller by its position controlling UNITED STATES PATENTS the speed of cylinders at the upstream station.
  • the present invention relates to a device for regulating the tension of a moving sheet of material and for keeping its length constant, particularly in between a rotary press, and an apparatus downstream of the latter for shaping the printed sheet.
  • a device for regulating the tension of a sheet of material between a delivery unit, situated downstream from the printing units, and a shaping unit.
  • This device comprises a jockey roller which is caused by a tensioning device (weight or spring) to bear on the sheet.
  • the tensioning device is integral with a lever which contacts a thrust, for which purpose the rate of output of the device is regulated manually. It has nevertheless been found that where sheets of a very light material are concerned, particularly light aluminium (having a thickness of 6-12 microns), the adjustment required is too fine to be coped with by an apparatus of this kind.
  • the object of the present invention is to remedy this drawback.
  • the variation in the length of the sheet, in one direction or in the other leads to corresponding displacements of two jockey rollers which bear against the sheet, only one of the rollers being biased to counteract tension in the sheet.
  • the rollers move along the arcuate surface of a drum over which the sheet passes.
  • the tension variations undergone by the sheet are detected and compensated on the basis of the modifications occurring in the shape or position of the tensioning device of the biased roller.
  • the position of the other and unbiased roller is varied, by means of a servo-control device, in accordance with the changes occurring in the shape and position of the tensioning device, in order to counteract the variations in the length of the sheet.
  • the speed of the driven one of a pair of sheet-engaging cylinders upstream of the rollers and thus the delivery of the sheet is controlled in accordance with the change in the position of the unbiased roller.
  • a process of this kind regulates the tension in the sheet and maintains the length thereof constant without subjecting it to any stresses which might cause even momentary stretching to an unacceptable extent, a feature of particular value in connection with materials to be printed having comparatively inadequate limits of elasticity. Furthermore, it enables the tension in the sheet to be adjusted very finely.
  • the invention also relates to a device for the performance of this process.
  • the device according to this invention is associated with an apparatus, such as that shown in the drawing and including an upstream pair of cylinders A and a downstream pair of cylinders B, between which passes a sheet of material 4.
  • the upstream pair of cylinders A may be a delivery unit situated at the outlet from a rotary press and consisting of a lower driven cylinder I and an upper countercylinder 3, parallel and tangential to the first cylinder, while the downstream pair of cylinders B may consist of shaping cylinders 5, 6 of some kind or other, tangential to each other.
  • the stress compensation which balances out a varia tion of tension of the travelling sheet is provided by a first downstream jockey roller device including a group of parallel rollers 7a, 7b, ie an upper restoring roller in a fixed position, and a jockey roller 7b.
  • a drum 7c is rotatable about an axis parallel to these rollers.
  • a tensioning device 8 consisting of a counterweight as shown, or of a spring or any other similar means supplies, by deformation or by change of position, the stress required to equilibrate the tension of the sheet.
  • a lever 7d constituting the support of the roller 7b and integral with an arm 7e bears the tensioning device 8. The lever 7d and the arm 7e are articulated to a horizontal shaft 11 about which the drum 7c rotates freely.
  • a second, upstream jockey roller device 9 is provided associated with a sheet tensioning device of its own. It comprises a group of rollers parallel to the first-mentioned rollers i.e. an upper restoring roller 90, having a fixed position, and a jockey roller 9b.
  • This upstream jockey roller 9b is not subjected to the action of a restoring counterweight or spring, guides sheet 4 from the upstream delivery unit A to the drum 7c, while with the downstream device 7 guides the sheet from the drum to the downstream receiving unit B.
  • the said device 9 likewise comprises a lever 9d which constitutes a support for the jockey roller 9b and is articulated to the same shaft 11 as the lever 7d, independently of this latter.
  • the sheet of material 4 emerging from the upstream pair of cylinders A thus passes, in succession, over the restoring roller 9a, under the upstream jockey roller 9b over the upper half of the drum 7c, under the downstream jockey roller 7b, and over the downstream restoring roller 7a, to be taken up, finally, by the downstream pair of cylinders B.
  • the levers 7d and 9d are interconnected by a mechanical servo-control device 12, hydraulic or other, which imparts to the lever 9d a rotary movement about the shaft 11, in the same direction as that of the lever 7a, so that, whatever the movement of this latter about the shaft 1 l, the two levers form a prolongation of each other, without the upstream jockey roller 9b exerting any force such as to increase the tension of the sheet of material 4.
  • the lever 7d rotates about the shaft 11 by a certain angle a in the upward direction, to oc cupy the position shown in broken lines on the drawing.
  • the other lever 9d independent of the lever 7d as described, does not of itself follow the movement about the shaft 11. It follows such movement solely under the action of the servo-control device 12.
  • This device causes the other lever 9a to rotate about the shaft 11 by the same angle a and in the same direction, until it forms a prolongation of the lever 7d, as shown in broken lines on the drawing, the second jockey roller then being promptly as well as accurately lowered into position 9'b.
  • the first jockey roller 7d detects any variation in the tension of the sheet of material 4 and effects, by its displacement, the compensation of the said variation, by following any movement resulting in a shortening or prolongation of the sheet.
  • Such displacement is transmitted, via the lever 7d and the servo-control device 12, to the lever 9d, which then moves in the same direction, taking with it the upstream roller 9b, in such a way as to lengthen or shorten the sheet 4 by a compensation length equal to the variation in length which it has undergone and to restore it to the normal length.
  • lever 9d is connected to a second arm 92 or any other control device of a mechanical or hydraulic nature, which transmits the prompt and accurate change of positions of lever 9d to a speed variator l controlling the rotation speed of the driven cylinder 1 of the upstream pair of cylinders A, to vary the output of the sheet 4 in accordance with the length variation detected.
  • a speed variator l controlling the rotation speed of the driven cylinder 1 of the upstream pair of cylinders A
  • the delivery of the sheet 4 at the outlet side of the cylinders 1 and 3 is slightly increased, to enable the yielding jockey roller 9b, upstream, to descend to its position 9'b.
  • the device covered by the present invention obviously allows of numerous alternative embodiments within the spirit and scope of the invention as regards the tensioning device 8, the servo-control device 12, the control device for the speed variation and other items, but this in no way affects the principle of the invention.
  • Apparatus for maintaining and regulating tension in a sheet of material, travelling from an upstream area to a downstream area, to keep the length of the sheet between said areas constant comprising;
  • upstream sheet engaging means for delivering a travelling sheet
  • downstream sheet engaging means for receiving the delivered sheet
  • drive means for driving at least one of said sheet engaging means
  • a jockey roller unit disposed between the upstream and downstream sheet engaging means comprising a drum rotatable about an axis transverse of the travelling sheet and having an arcuate surface portion concentric with said axis and engageable with the sheet
  • upstream jockey roller means engaging the sheet to guide it from the upstream sheet engaging means onto an upstream part of said arcuate surface portion
  • downstream jockey roller means engaging the sheet to guide it from a downstream part of said arcuate surface portion to the downstream sheet engaging means
  • servo-control means for adjusting a position of the other jockey roller in response to a change of position of said one jockey roller and for thereby controlling said drive means to compensate corresponding variations of the length of said sheet between said upstream and downstream sheet engaging means;
  • Apparatus according to claim 1 including first and second levers, both pivoted about said axis of the drum and supporting, respectively, said downstream and upstream jockey rollers for movements along said arcuate surface portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Treatment Of Fiber Materials (AREA)
US431979A 1973-01-11 1974-01-09 Method and device for regulating the tension and length of a sheet of material Expired - Lifetime US3892344A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7300899A FR2214295A5 (xx) 1973-01-11 1973-01-11

Publications (1)

Publication Number Publication Date
US3892344A true US3892344A (en) 1975-07-01

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ID=9113145

Family Applications (1)

Application Number Title Priority Date Filing Date
US431979A Expired - Lifetime US3892344A (en) 1973-01-11 1974-01-09 Method and device for regulating the tension and length of a sheet of material

Country Status (8)

Country Link
US (1) US3892344A (xx)
BE (1) BE809505A (xx)
DE (1) DE2400806A1 (xx)
FR (1) FR2214295A5 (xx)
GB (1) GB1436043A (xx)
IT (1) IT1006779B (xx)
LU (1) LU69136A1 (xx)
NL (1) NL149460B (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411393A (en) * 1981-06-05 1983-10-25 Dennison Manufacturing Company Web tension control apparatus
WO1995012539A1 (en) * 1993-11-04 1995-05-11 The Procter & Gamble Company Method and apparatus of transporting an elongate flexible object and use thereof
US5685472A (en) * 1995-05-08 1997-11-11 Bobst Sa Feeding device for processing a continuous moving web in a station in which the web is acted on while in a standstill position
EP1283186A2 (en) * 2001-08-09 2003-02-12 Tokyo Kikai Seisakusho, Ltd. Controller of running tension of paper web for rotary press
US20040103708A1 (en) * 2002-08-30 2004-06-03 Nissan Motor Co., Ltd. Manufacturing method of endless metal belt and manufacturing apparatus of endless metal belt
EP1428780A1 (de) * 2002-12-02 2004-06-16 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Vorrichtung zum Zuführen von Folie zur Herstellung von Folienbeuteln und Vorrichtung zur Herstellung von Folienbeuteln
JP2012510942A (ja) * 2008-12-04 2012-05-17 ボブスト ソシエテ アノニム 包装材製造機械における供給ステーションのために変換ユニットにウェブ基材を供給する装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4437408A (en) * 1980-06-16 1984-03-20 The Kendall Company Device for applying indicia to an elastic web
DE10130340A1 (de) 2001-06-26 2003-01-02 Bhs Corr Masch & Anlagenbau Bahnspannungs-Regelungs-Vorrichtung für Wellpappeanlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758794A (en) * 1927-08-12 1930-05-13 Gen Electric Film driving
US2586286A (en) * 1948-04-03 1952-02-19 Technicolor Motion Picture Film registering and printing apparatus
US3587959A (en) * 1969-06-02 1971-06-28 Formaster Ltd Web feeding devices
US3625447A (en) * 1969-05-05 1971-12-07 Druckmaschuenwerke Leipzig Veb Apparatus for control of web tension in multicolor printing machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758794A (en) * 1927-08-12 1930-05-13 Gen Electric Film driving
US2586286A (en) * 1948-04-03 1952-02-19 Technicolor Motion Picture Film registering and printing apparatus
US3625447A (en) * 1969-05-05 1971-12-07 Druckmaschuenwerke Leipzig Veb Apparatus for control of web tension in multicolor printing machines
US3587959A (en) * 1969-06-02 1971-06-28 Formaster Ltd Web feeding devices

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411393A (en) * 1981-06-05 1983-10-25 Dennison Manufacturing Company Web tension control apparatus
WO1995012539A1 (en) * 1993-11-04 1995-05-11 The Procter & Gamble Company Method and apparatus of transporting an elongate flexible object and use thereof
US5685472A (en) * 1995-05-08 1997-11-11 Bobst Sa Feeding device for processing a continuous moving web in a station in which the web is acted on while in a standstill position
EP1283186A2 (en) * 2001-08-09 2003-02-12 Tokyo Kikai Seisakusho, Ltd. Controller of running tension of paper web for rotary press
EP1283186A3 (en) * 2001-08-09 2004-01-21 Tokyo Kikai Seisakusho, Ltd. Controller of running tension of paper web for rotary press
US7204005B2 (en) * 2002-08-30 2007-04-17 Nissan Motor Co., Ltd. Manufacturing method of endless metal belt and manufacturing apparatus of endless metal belt
US20040103708A1 (en) * 2002-08-30 2004-06-03 Nissan Motor Co., Ltd. Manufacturing method of endless metal belt and manufacturing apparatus of endless metal belt
EP1428780A1 (de) * 2002-12-02 2004-06-16 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Vorrichtung zum Zuführen von Folie zur Herstellung von Folienbeuteln und Vorrichtung zur Herstellung von Folienbeuteln
US20040178296A1 (en) * 2002-12-02 2004-09-16 Hans-Peter Wild Device for feeding foils for the manufacture of foil bags and device for the manufacture of foil bags
US7124798B2 (en) 2002-12-02 2006-10-24 Indag Gesellschaft Fuer Industriebedarf Mbh & Co. Betriebs Kg Device for feeding foils for the manufacture of foil bags and device for the manufacture of foil bags
CN100497138C (zh) * 2002-12-02 2009-06-10 Indag工业品有限公司及两合公司 用于供送制造箔袋用的箔的装置和用于制造箔袋的装置
JP2012510942A (ja) * 2008-12-04 2012-05-17 ボブスト ソシエテ アノニム 包装材製造機械における供給ステーションのために変換ユニットにウェブ基材を供給する装置
US8733222B2 (en) 2008-12-04 2014-05-27 Bobst Mex Sa Device for feeding a converting unit with a web substrate for a feeding station in a packaging production machine

Also Published As

Publication number Publication date
NL7305043A (xx) 1974-07-15
IT1006779B (it) 1976-10-20
LU69136A1 (xx) 1974-05-17
BE809505A (fr) 1974-05-02
NL149460B (nl) 1976-05-17
DE2400806A1 (de) 1974-07-25
GB1436043A (en) 1976-05-19
FR2214295A5 (xx) 1974-08-09

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