EP0695714A1 - Papierförderapparat zum Erzeugen einer gespannten Papierbahn ausgehend von einem ungespannten Zustand - Google Patents

Papierförderapparat zum Erzeugen einer gespannten Papierbahn ausgehend von einem ungespannten Zustand Download PDF

Info

Publication number
EP0695714A1
EP0695714A1 EP95830318A EP95830318A EP0695714A1 EP 0695714 A1 EP0695714 A1 EP 0695714A1 EP 95830318 A EP95830318 A EP 95830318A EP 95830318 A EP95830318 A EP 95830318A EP 0695714 A1 EP0695714 A1 EP 0695714A1
Authority
EP
European Patent Office
Prior art keywords
paper
dragging
feeding apparatus
paper feeding
dragging means
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Withdrawn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
EP95830318A
Other languages
English (en)
French (fr)
Inventor
Luciano Meschi
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.)
Industria Grafica Meschi SRL
Original Assignee
Industria Grafica Meschi SRL
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 Industria Grafica Meschi SRL filed Critical Industria Grafica Meschi SRL
Publication of EP0695714A1 publication Critical patent/EP0695714A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/16—Means for tensioning or winding the web
    • 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
    • B65H20/20—Advancing webs by web-penetrating means, e.g. pins
    • 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

Definitions

  • the present invention generally relates to the field of printers and other paper processing machines and more precisely it relates to a paper feeding apparatus for printers and similar machines, in particular, but not exclusively, suitable for providing a stretched continuous web of paper starting from an unstretched condition.
  • a well-known and widely used system to stretch the paper at the entrance of a printer consists in unwinding it from a braked roll.
  • the stretch of the paper can be registered by regulating the braking stress of the unwinding roll.
  • printers such as data printers
  • a paper dragging apparatus also named tractor.
  • the printing occurs inside of the printing heads, of the laser type or of the needle type, and the tractor supplies the paper to the various points of the machine by dragging it by means of rollers or belts having small teeth which engage in the holes laterally made on the paper.
  • the tractor supplies the paper to the various points of the machine by means of rollers or belts having small teeth which engage in the holes laterally made on the paper.
  • encoders In this way it is possible to control the position of the paper with sufficient precision by means of encoders.
  • the paper itself cannot slide with respect to the tractors, because the teeth stop it.
  • the data printers normally do not need that the paper is fed stretched, because it is sufficient that the tractor guides it, and a slight stretch is provided where this is necessary for a correct printing. Downstream from said printers means are provided for the collection of the printed paper which tear it in sheets or packages of sheets by means of tearing devices and conveying systems.
  • the paper feeding apparatus whose characteristic is to comprise a first and a second dragging means placed one after the other and both pulling said web of paper coming from an unstretched condition.
  • the second dragging means has a dragging speed of the paper greater than 2-15% the dragging speed of the first dragging means.
  • the second dragging means comprises two counter rotating friction rollers.
  • the preferred speed of the second dragging means is greater than 5% the speed of the first dragging means, thereby a stretch occurs in the paper passing through the two dragging means.
  • Directional rolls are provided for downstream the dragging means and capable of maintaining the stretch on the paper.
  • the second dragging means comprises three friction rollers forming a U path.
  • a paper feeding apparatus 1 is provided upstream with a printing typographic group 2 of a paper web 3 continuously fed.
  • the paper 3 Upstream the feeding apparatus 1 the paper 3 is in a unstretched condition and in particular it forms a loop 4. For example this occurs when the paper comes from another printing unit, such as a data printing machine like a laser printer or a needle printer.
  • the loop 4 forms as a consequence of the need that the paper control in the two different machines be independent, such as for strict paper handling reasons in one of the two machines or in both of them.
  • the feeder In order to stretch the paper 3 which passes through printing rollers 5 of the group 2, the feeder according to the invention comprises a first dragging means 6, such as a teethed tractor, and a second dragging means 7, such as a couple of counter-rotating rollers 7a and 7b. Downstream the two dragging means 6 and 7, deflexion means of the paper are provided comprising in this particular case two rollers 8 and 9 which are placed so that the paper winds around each of them in an arch which is about 180°. In this way a possible sliding of the paper 3 itself is prevented.
  • a first dragging means 6, such as a teethed tractor
  • a second dragging means 7 such as a couple of counter-rotating rollers 7a and 7b.
  • deflexion means of the paper comprising in this particular case two rollers 8 and 9 which are placed so that the paper winds around each of them in an arch which is about 180°. In this way a possible sliding of the paper 3 itself is prevented.
  • the tractor 6, like that shown in figures 2 and 3, has teeth 6a which engage in holes 11 laterally made on paper 3.
  • the tractor 6 with teeth 6a moves in the direction of arrow A at a speed V, and is put into rotation by a transmission shaft 12 driven in a known and not shown manner.
  • the rollers 7a and 7b of the second dragging means 7 pull the paper at a speed V + 5%, driven by not shown driving means.
  • the pull of the second dragging means 7 causes the stretch of the paper as if the latter were unwound from a braked bobbin.
  • this pull causes the first dragging means to rotate at a speed V + 5%, even if the torque acting on it is sufficient to provide only a speed V, as the driving of dragging means 6 and 7 is preferably of the electronically controlled torque type.
  • This also prevents the holes 11 of paper 3 from tear for an excessive pull action with respect to teeth 6a.
  • the torque of the first dragging means 6 is slightly less than the torque of the second dragging means 7 so that the above stated 5% speed difference is obtainable.
  • the directional rollers 8 and 9 Downstream the second dragging means 7 the directional rollers 8 and 9 have the only function of keeping the stretch of the paper which is then pulled by a third dragging means 15 provided for downstream the printing group 2 and dragging the web 3 of paper at a speed substantially equal to the speed of the second dragging means 7.
  • the paper moves from rollers 7 to rollers 8 preferably with an angle of about 90° with respect to the dragging direction, so that possible side trackings of the paper are prevented.
  • the second dragging means comprises three friction rollers 17, 18 and 19 rotating at the same angular speed.
  • tractor 6 comprises one-direction rotary means, such as a freewheel coaxial with the transmission shaft 12, so that a possible drawing back of the paper is prevented when the latter stops for whichever reasons.
  • one-direction rotary means such as a freewheel coaxial with the transmission shaft 12
  • the 5% difference of the dragging speed can be advantageously varied in the range comprised between 2 and 15%, as a function of the capacity of the paper to resist in correspondence of holes 11 as well as a function of the strength and of the speed of the paper itself.
  • the paper feeding apparatus thus allows to provide the printing group with a stretched web of paper even when the paper available upstream is in the form of a loop or in another unstretched condition, without the use of the presently known stretching means which are complex and encumbrant.

Landscapes

  • Advancing Webs (AREA)
  • Handling Of Sheets (AREA)
EP95830318A 1994-07-26 1995-07-24 Papierförderapparat zum Erzeugen einer gespannten Papierbahn ausgehend von einem ungespannten Zustand Withdrawn EP0695714A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI940144 1994-07-26
ITFI940144A IT1269129B (it) 1994-07-26 1994-07-26 Convogliatore di carta per stampanti e simili,in particolare atto a fornire carta tesa in modulo continuo a partire da un ansa formata in uscita da una macchina disposta a monte

Publications (1)

Publication Number Publication Date
EP0695714A1 true EP0695714A1 (de) 1996-02-07

Family

ID=11350965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830318A Withdrawn EP0695714A1 (de) 1994-07-26 1995-07-24 Papierförderapparat zum Erzeugen einer gespannten Papierbahn ausgehend von einem ungespannten Zustand

Country Status (2)

Country Link
EP (1) EP0695714A1 (de)
IT (1) IT1269129B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019948A1 (en) * 1996-11-01 1998-05-14 Tetra Pak Hoyer A/S A method and a system for controlling tension of paper and foil webs
WO2004071916A2 (en) * 2003-02-12 2004-08-26 Baker Hughes Incorporated Continuous paper feed system
US7295289B2 (en) 2003-07-11 2007-11-13 Baker Hughes Incorporated Continuous paper feed system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108515722B (zh) * 2018-05-30 2024-05-24 浙江超伟机械有限公司 一种包装袋副料断料装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835454A (en) * 1954-02-04 1958-05-20 Jr Richard Le B Bowen Hydraulically controlled differential web tensioning mechanism
GB1154253A (en) * 1965-07-12 1969-06-04 Ateliers De Const Mecaniques S Improvements in the Paying-Out Under Tension of Products in Sheet Form, Particularly Paper Webs
FR2250696A1 (de) * 1973-11-13 1975-06-06 Bobst Fils Sa J
US3955737A (en) * 1974-04-08 1976-05-11 Moore Business Forms, Inc. Web feed apparatus
FR2436734A1 (fr) * 1978-04-03 1980-04-18 Fobelmac Procede pour acheminer et traiter ou travailler en continu un support souple deformable tel qu'une bande par exemple en papier pour produire notamment des documents personnalises ou non, et installation pour la mise en oeuvre du procede
GB2075074A (en) * 1979-08-10 1981-11-11 Batyrev R I Device for measuring and controlling the stretch ratio of moving linen
GB2078208A (en) * 1980-06-19 1982-01-06 Crosfield Electronics Ltd Web Feeding Machines
JPS63242835A (ja) * 1987-03-26 1988-10-07 Glory Ltd 紙葉類繰出し装置
JPH038653A (ja) * 1989-06-02 1991-01-16 Konica Corp フィルム搬送装置
JPH0682558A (ja) * 1992-09-02 1994-03-22 Toshiba Corp 水分回収装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835454A (en) * 1954-02-04 1958-05-20 Jr Richard Le B Bowen Hydraulically controlled differential web tensioning mechanism
GB1154253A (en) * 1965-07-12 1969-06-04 Ateliers De Const Mecaniques S Improvements in the Paying-Out Under Tension of Products in Sheet Form, Particularly Paper Webs
FR2250696A1 (de) * 1973-11-13 1975-06-06 Bobst Fils Sa J
US3955737A (en) * 1974-04-08 1976-05-11 Moore Business Forms, Inc. Web feed apparatus
FR2436734A1 (fr) * 1978-04-03 1980-04-18 Fobelmac Procede pour acheminer et traiter ou travailler en continu un support souple deformable tel qu'une bande par exemple en papier pour produire notamment des documents personnalises ou non, et installation pour la mise en oeuvre du procede
GB2075074A (en) * 1979-08-10 1981-11-11 Batyrev R I Device for measuring and controlling the stretch ratio of moving linen
GB2078208A (en) * 1980-06-19 1982-01-06 Crosfield Electronics Ltd Web Feeding Machines
JPS63242835A (ja) * 1987-03-26 1988-10-07 Glory Ltd 紙葉類繰出し装置
JPH038653A (ja) * 1989-06-02 1991-01-16 Konica Corp フィルム搬送装置
JPH0682558A (ja) * 1992-09-02 1994-03-22 Toshiba Corp 水分回収装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 33 (M - 789) 25 January 1989 (1989-01-25) *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 117 (M - 1095) 20 March 1991 (1991-03-20) *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 226 (M - 412) 12 September 1985 (1985-09-12) *
W.K. BOICE: "Controlling Speed in Multidrive Systems", MACHINE DESIGN, 22 January 1970 (1970-01-22), CLEVELAND US, pages 130 - 134, XP001381652 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019948A1 (en) * 1996-11-01 1998-05-14 Tetra Pak Hoyer A/S A method and a system for controlling tension of paper and foil webs
US6193184B1 (en) * 1996-11-01 2001-02-27 Tetra Pak Hoyer A/S Method and a system for controlling tension of paper and foil webs
WO2004071916A2 (en) * 2003-02-12 2004-08-26 Baker Hughes Incorporated Continuous paper feed system
WO2004071916A3 (en) * 2003-02-12 2005-02-10 Baker Hughes Inc Continuous paper feed system
US7295289B2 (en) 2003-07-11 2007-11-13 Baker Hughes Incorporated Continuous paper feed system

Also Published As

Publication number Publication date
IT1269129B (it) 1997-03-21
ITFI940144A1 (it) 1996-01-26
ITFI940144A0 (it) 1994-07-26

Similar Documents

Publication Publication Date Title
DE3587719T2 (de) Kaschiervorrichtung mit Ausdehnungsüberwachung.
EP1839861B2 (de) Folientransferwerk mit integrierter Weiterverarbeitungseinrichtung
EP2013091B1 (de) Vorrichtung zum spenden von etiketten, insbesondere von selbstklebenden etiketten, auf gegenstände
DE2642381C3 (de) Einrichtung zum registerhaltigen Zuführen einer Bahn
US4987830A (en) Paper feed device for rotary press
EP1409388B1 (de) Verfahren zur steuerung eines rollenspeichers und rollenspeicher zum speichern blättförmiger gegenstände
JPH07108741B2 (ja) 輪転機の紙通し装置
DE3803765A1 (de) Verfahren und vorrichtung zum steuern der spannung eines bandes
DE3713666C2 (de) Verfahren zum Aufprägen und Präge-Rotationsmaschine
US20030164103A1 (en) Apparatus for slitting, merging, and cutting a continuous paperweb
DE3406310A1 (de) Etikettiermaschine
DD296641A5 (de) On-line-praegevorrichtung fuer beschriftungsmaschinen
EP0695714A1 (de) Papierförderapparat zum Erzeugen einer gespannten Papierbahn ausgehend von einem ungespannten Zustand
JPH0688696B2 (ja) ウェブ料紙加工機械の紙通し装置
DE3015281A1 (de) Etikettierstation fuer etikettiermaschinen
DE60213294T2 (de) Abwickelvorrichtung für rollen von bahnmaterial mit doppeltem antriebsmechanismus und entsprechendes abwickelverfahren
DE68907892T2 (de) Überwachungsvorrichtung für den farbbandtransport.
JP3765580B2 (ja) 複数の長尺用紙の重積送出しと格上げ加工とのための装置及び方法
US4753380A (en) Overdriven tractor-friction paper drive
DE3733780C2 (de)
JPS6016593Y2 (ja) 巻戻シ−トの張力制御装置
EP0108329B1 (de) Vorrichtung zur Kontrolle der Anwesenheit einer Warenbahn
EP0810971A1 (de) Stauüberwachungseinrichtung für eine transportvorrichtung für papier, insbesondere für eine papierbahn
DE602004001803T2 (de) Verfahren und Vorrichtung zum Zuführen einer kontinuierlichen Verpackungsbahn und eines Aufreissstreifens an eine Verarbeitungsmaschine
DE69016108T2 (de) Einzelblattaufnahme- und -transporteinrichtung.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19960808