EP0281498B1 - Dispositif de transport de feuilles et/ou de bandes dans des machines de bureau, en particulier des imprimantes matrix - Google Patents

Dispositif de transport de feuilles et/ou de bandes dans des machines de bureau, en particulier des imprimantes matrix Download PDF

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Publication number
EP0281498B1
EP0281498B1 EP88730011A EP88730011A EP0281498B1 EP 0281498 B1 EP0281498 B1 EP 0281498B1 EP 88730011 A EP88730011 A EP 88730011A EP 88730011 A EP88730011 A EP 88730011A EP 0281498 B1 EP0281498 B1 EP 0281498B1
Authority
EP
European Patent Office
Prior art keywords
roller
supporting force
bearing
frame
feed roll
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
EP88730011A
Other languages
German (de)
English (en)
Other versions
EP0281498A2 (fr
EP0281498A3 (en
Inventor
Günter Dipl.-Ing.(FH) Gomoll
Wolfgang Dipl.-Ing.(Fh) Hauslaib
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT88730011T priority Critical patent/ATE86586T1/de
Publication of EP0281498A2 publication Critical patent/EP0281498A2/fr
Publication of EP0281498A3 publication Critical patent/EP0281498A3/de
Application granted granted Critical
Publication of EP0281498B1 publication Critical patent/EP0281498B1/fr
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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • 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
    • B65H20/02—Advancing webs by friction 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
    • 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/132—Details of longitudinal profile arrangement of segments along axis
    • B65H2404/1321—Segments juxtaposed along axis
    • 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
    • B65H2404/134—Axle
    • B65H2404/1341—Elastic mounting, i.e. subject to biasing means
    • 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
    • B65H2404/137—Means for varying longitudinal profiles
    • B65H2404/1371—Means for bending, e.g. for controlled deflection
    • 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
    • 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
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • 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
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B65H2511/224—Nip between rollers, between belts or between rollers and belts

Definitions

  • the invention relates to a device for the paper transport of single sheets and / or endless webs in office machines, in particular in matrix printers, with friction rollers which are rotatably mounted and at least individually driven in side plates of a frame and which are provided in pairs and which have a length / diameter ratio of 30 : 1 to 50: 1, and, due to their bearing support forces in the frame, have positive or negative bending lines of the first and second pressure rollers, in that a supporting force acts on one of the pressure rollers in the center area, in such a way that the two bending lines run approximately parallel.
  • Another known solution uses a number of pressure rollers which are driven differently to the pressure roller.
  • Another known solution (CH-PS 456 649) provides a printing or impression cylinder for rotogravure printing presses in which the desired uniform pressure distribution cannot easily be achieved by a certain contact pressure. This problem is avoided in that a jacket and the roller core touch only over a predetermined length in the middle of the roller and the rollers and / or the jacket ends have profiles that differ from the central part.
  • the device described in the introduction is known (DE 24 30 929 A1).
  • the known device is unsuitable for paper transport. If a single sheet is to be transported with large clamping forces across its width, it is also crucial that the degree of slenderness of the pressure rollers is defined by the diameter / length ratio. A specific course of bending lines can only be achieved with a predetermined, clearly defined degree of slenderness.
  • a paper web or a paper single sheet is not comparable to a band-shaped workpiece, because nothing is changed on the piece of paper itself.
  • a "workpiece" is a part on which a shaping design is carried out. A sheet of paper does not meet this requirement. Above all, a sheet of paper is not deformed. This would be detrimental to a sheet of paper.
  • the object of the invention is to make the friction the same size over the entire length of long, thin pairs of friction rollers.
  • the pressure roller lying on the inside of the bend line can be generated under prestress due to the supporting force acting on the pressure roller lying on the inside, the pressure roller on the inside being rigid with its roller journals in the frame and the other, opposite 24 679 pressure roller are each rotatably mounted on their roller journals by means of roller levers and on these tension springs suspended in the printer frame, the roller levers being rotatably mounted in the printer frame.
  • This solution is economically cheaper than the known solutions, because it is less expensive on parts that have to be manufactured and kept in stock, and generates uniformly high frictional forces.
  • the supporting force provided in the central area can be generated by means of a bearing roller supported on the printer frame.
  • the supporting force can be transmitted particularly advantageously here due to the rolling friction.
  • the bearing roller generating the supporting force in the central region itself be supported by means of compression springs acting on a roller axis.
  • the magnitude of the force can be set here via the compression springs, whereby there is also coordination with the tension springs attached to the roller levers.
  • a device for paper transport is required which is adapted to the other assemblies of the matrix printer and its dimensions.
  • a matrix printer has friction rollers which are rotatably mounted in side plates and which act as pressure rollers 1 and 2.
  • One or both of the pressure rollers 1 and 2 are driven in rotation.
  • the pressure roller 1 has, for example, a supporting force length of 480 mm and a diameter of 14 mm and the pressure roller 2 has a diameter of 12 mm.
  • Axially immovable, elastic sleeves 3 are also arranged on the pressure roller 2.
  • Single sheets or endless webs 4 are guided in the direction 5 between the pressure rollers 1 and 2 and through a channel 6 in front of a pressure abutment 7, on which the paper is printed lying on the print head 8 and transported out again by the friction rollers 9 and 10.
  • the pressure rollers 1 and 2 considered here are arranged within a paper guide body 22, which forms a further paper channel 12 with the aid of a profile rod 13 (FIG. 1).
  • the bearing support forces 14a and 14b in the printer frame 15 result in a positive bending line 16 of the pressure roller 1 and a negative bending line 17 of the pressure roller 1 by means of a roller lever 18 and a tension spring 19 on the printer frame 15, the pressure roller 1 being pressed resiliently against the pressure roller 2 via the roller levers 18 and the tension springs 19.
  • the pressure rollers 1 and 2 are very thin for a very long time and, for structural reasons, the roller levers 18 can only be attached externally, the pressure rollers 1 and 2 are pressed apart in the central region 20.
  • a supporting force 21 is applied in the central region 20 against the pressure roller 2, so that the negative bending line 17 is converted into a positive bending line 22.
  • the support force 21 can be calculated or determined empirically.
  • the Bending lines 16 and 22 run largely parallel here.
  • An increase in the supporting force 21 results in a preload, the pressure rollers 1 and 2 securely abutting one another over their full length. Accordingly, a fed single sheet or a continuous paper web 4 is pressed and driven over its full width.
  • the roller journals 2a and 2b are rigidly mounted in the printer frame 15, the roller journals 1a and 1b of the pressure roller 1 are fastened to the printer frame 15 via the roller levers 18 and the tension springs 19.
  • the supporting force 21 in the central region 20 is generated by means of bearing roller 24 supported on the printer frame 15 or on a pressure abutment housing 23.
  • the roller axis 24a is supported by compression springs 25a and 25b.
  • the bearing roller 24 and the compression springs 25a and 25b are received in a separate bearing bracket 26.
  • the bearing bracket 26 is fastened in the pressure abutment housing 23 by means of clamping wings 27a and 27b which engage in guide grooves 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Unwinding Webs (AREA)
  • Handling Of Cut Paper (AREA)
  • Handling Of Sheets (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Claims (4)

  1. Dispositif pour le transport de feuilles individuelles et/ou de bandes sans fin dans des machines de bureau, en particulier dans des imprimantes matricielles, comportant des cylindres de friction (1,2 ; 9,10) logés de façon rotative dans des platines latérales d'un bâti (15) et au moins entraînés individuellement, qui sont prévus par paires et qui présentent un rapport entre la longueur et le diamètre de 30 pour 1 à 50 pour 1 et qui, en raison de leurs forces d'appui (14a, 14b) dans le bâti (15), présentent des lignes de flexion (22 ; 17) s'étendant positivement ou négativement des premier et second cylindres de pressage (1 ; 2), en ce qu'une force d'appui (21) agit sur l'un des cylindres de pressage (1 ; 2) dans la zone centrale (20), de sorte que les deux lignes de flexion (17,22) s'étendent sensiblement parallèlement,
    caractérisé en ce que le cylindre de pressage (2), se trouvant à l'intérieur de la ligne de flexion, peut être créé sous une précontrainte, en raison de la force d'appui (21) agissant sur le cylindre de pressage (2) intérieur, le cylindre de pressage (2) intérieur étant, à chaque fois, monté rigidement avec ses tourillons de cylindre (2a,2b) dans le bâti, de façon à pouvoir tourner, et l'autre cylindre de pressage (1), lui faisant face, étant, à chaque fois, monté rotatif avec ses tourillons de cylindre (1a,1b) dans le bâti de l'imprimante (15), à l'aide de leviers à galet (18), et de ressorts de traction (19) accrochés à ces derniers, les leviers à galet (18) étant montés de façon à pouvoir tourner dans le bâti de l'imprimante (15).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que la force d'appui (21), prévue dans la zone centrale (20), peut être engendrée au moyen d'un rouleau (24) prenant appui sur le bâti de l'imprimante (15).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que le rouleau (24), qui engendre la force d'appui (21) dans la zone centrale (20), est supporté lui-même par des ressorts de pression (25a,25b) agissant sur un axe du rouleau (24a).
  4. Dispositif selon les revendications 2 et 3,
    caractérisé en ce que le rouleau (24), qui engendre la force d'appui (21) dans la zone centrale (20), est agencé, avec les ressorts de pression (25a,25b), dans un support de palier (26) séparé, et en ce que le support de palier (26) est fixé dans un boîtier de butée (23) au moyen d'ailes de serrage (27a,27b), des gorges de guidage (28) pour le support de palier (26) étant prévues dans le boîtier de butée (23).
EP88730011A 1987-02-24 1988-01-15 Dispositif de transport de feuilles et/ou de bandes dans des machines de bureau, en particulier des imprimantes matrix Expired - Lifetime EP0281498B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88730011T ATE86586T1 (de) 1987-02-24 1988-01-15 Vorrichtung fuer den papiertransport von einzelblaettern und/oder endlosbahnen in bueromaschinen, insbesondere in matrixdruckern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3705857 1987-02-24
DE19873705857 DE3705857A1 (de) 1987-02-24 1987-02-24 Vorrichtung fuer den papiertransport von einzelblaettern und/oder endlosbahnen in bueromaschinen, insbesondere in matrixdruckern

Publications (3)

Publication Number Publication Date
EP0281498A2 EP0281498A2 (fr) 1988-09-07
EP0281498A3 EP0281498A3 (en) 1990-01-10
EP0281498B1 true EP0281498B1 (fr) 1993-03-10

Family

ID=6321636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88730011A Expired - Lifetime EP0281498B1 (fr) 1987-02-24 1988-01-15 Dispositif de transport de feuilles et/ou de bandes dans des machines de bureau, en particulier des imprimantes matrix

Country Status (5)

Country Link
US (1) US4889270A (fr)
EP (1) EP0281498B1 (fr)
JP (1) JPS63252768A (fr)
AT (1) ATE86586T1 (fr)
DE (2) DE3705857A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0465259B1 (fr) * 1990-07-06 1995-01-11 Sumitomo Gomu Kogyo Kabushiki Kaisha Rouleau élastique pour l'alimentation de papier
JP2001019210A (ja) * 1999-07-09 2001-01-23 Alps Electric Co Ltd プリンタの紙送り機構
CN102896877A (zh) * 2012-09-19 2013-01-30 铜陵其利电子材料有限公司 一种镀膜机用碾平辊
JP6493129B2 (ja) * 2015-09-30 2019-04-03 京セラドキュメントソリューションズ株式会社 画像形成装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE253360C (fr) *
CH456649A (de) * 1967-05-25 1968-07-31 Winkler Fallert & Co Maschf Druck- oder Gegendruckzylinder für Druckmaschinen, insbesondere Tiefdruckmaschinen
DE2406053A1 (de) * 1973-03-07 1974-09-26 Geraetewerk Karl Marx Stadt Im Papierandruckeinrichtung in fernschreibern und aehnlichen maschinen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849230A (en) * 1956-07-19 1958-08-26 Danly Mach Specialties Inc Hydraulically clamped stock feed assembly for power presses
NL260454A (fr) * 1960-01-28
US3330458A (en) * 1965-05-17 1967-07-11 Quik Chek Electronics And Phot Removable pressure roller mechanism
US3561658A (en) * 1968-09-27 1971-02-09 Fmc Corp Nip roll assembly
DE2063377A1 (de) * 1970-12-23 1972-07-13 Adlerwerke Kleyer Ag H Randbegrenzungs- und Tabuliervorrichtung an Schreib- und ähnlichen Maschinen
AT324944B (de) * 1973-10-12 1975-09-25 Voest Ag Vorrichtung zum fördern von bandförmigen werkstücken in bandlängsrichtung
JPS5760108Y2 (fr) * 1978-03-02 1982-12-22
JPS62103169A (ja) * 1985-10-30 1987-05-13 Seikosha Co Ltd プリンタの紙送り機構

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE253360C (fr) *
CH456649A (de) * 1967-05-25 1968-07-31 Winkler Fallert & Co Maschf Druck- oder Gegendruckzylinder für Druckmaschinen, insbesondere Tiefdruckmaschinen
DE2406053A1 (de) * 1973-03-07 1974-09-26 Geraetewerk Karl Marx Stadt Im Papierandruckeinrichtung in fernschreibern und aehnlichen maschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"druck print" 2/1983 Seite 86-90. *

Also Published As

Publication number Publication date
EP0281498A2 (fr) 1988-09-07
EP0281498A3 (en) 1990-01-10
ATE86586T1 (de) 1993-03-15
US4889270A (en) 1989-12-26
DE3705857A1 (de) 1988-09-01
JPS63252768A (ja) 1988-10-19
DE3878947D1 (de) 1993-04-15

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