EP0305230A1 - Periodische Papierbahnzufuhr einer Maschine, insbesondere für eine blattabschneidende Presse - Google Patents

Periodische Papierbahnzufuhr einer Maschine, insbesondere für eine blattabschneidende Presse Download PDF

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Publication number
EP0305230A1
EP0305230A1 EP88401817A EP88401817A EP0305230A1 EP 0305230 A1 EP0305230 A1 EP 0305230A1 EP 88401817 A EP88401817 A EP 88401817A EP 88401817 A EP88401817 A EP 88401817A EP 0305230 A1 EP0305230 A1 EP 0305230A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
oscillating
ply
call
machine
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
EP88401817A
Other languages
English (en)
French (fr)
Other versions
EP0305230B1 (de
Inventor
Michael Armelin
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.)
Machines Chambon SA
Original Assignee
Machines Chambon SA
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 Machines Chambon SA filed Critical Machines Chambon SA
Priority to AT88401817T priority Critical patent/ATE72554T1/de
Publication of EP0305230A1 publication Critical patent/EP0305230A1/de
Application granted granted Critical
Publication of EP0305230B1 publication Critical patent/EP0305230B1/de
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
    • B65H20/00—Advancing webs
    • B65H20/30—Arrangements for accumulating surplus web
    • B65H20/32—Arrangements for accumulating surplus web by making loops
    • B65H20/34—Arrangements for accumulating surplus web by making loops with rollers
    • 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
    • B65H20/06—Advancing webs by friction band
    • B65H20/08—Advancing webs by friction band to effect step-by-step advancement of web

Definitions

  • the present invention relates to a feeding device for a machine working on a sheet of material when stopped, applicable more particularly but not exclusively to the feeding of a flat cutting press.
  • this web is generally delivered upstream, in a continuous manner, from a coil.
  • the flat cutting press is a machine which requires a temporary stop of the running of the sheet of material, during the cutting operation, there occurs, due to the continuous feeding, an accumulation of the material to be cut, in upstream of the cutting press.
  • various devices have already been designed which make it possible to store the excess length of the ply in the form of a variable length loop.
  • This loop lengthens during the shutdown of the cutting press and it shortens as soon as the supply of the cutting press resumes, for a subsequent cutting operation, these operations taking place cyclically. Failure to maintain the tablecloth then causes defects in the positioning of the tablecloth as soon as the operating speed increases.
  • the present invention aims to remedy these drawbacks by providing a device with a particularly simple design, allowing easy adjustment for its adaptation to different formats, this adjustment even being able to be completed on the fly.
  • this supply device for a machine working on a sheet of material at a standstill, in particular for a flat blanking press, this sheet being continuously supplied, upstream of the machine, passing between a pair of call cylinders and counterpart, of horizontal and transverse axes, tangent to one another, driven in rotation at a constant peripheral speed, is characterized in that it comprises, in the vicinity of the call cylinder and the downstream side thereof, in the direction of travel of the web, an oscillating cylinder mounted for rotation on a support which can oscillate around the axis of the call cylinder, this oscillating cylinder being driven in rotation on itself at from the call cylinder, by means of a transmission mechanism, so that the peripheral speed of the oscillating cylinder is identical to that of the sheet of material winding around a part of the periphery of this oscillating cylinder and thus always being s in non-sliding contact with the surface of the oscillating cylinder, means for causing an oscillating movement of the support and of the cylinder which it
  • the device according to the invention offers the advantage that, whatever the format of the operation carried out in the machine, for example the format of the cutting, there is no sliding between the sheet of cut material and the oscillating cylinder of the fact that the latter is always rotated at the same peripheral speed as the call cylinder, from the latter.
  • This absence of sliding avoids altering the printing in the case of a printed web which is in contact with the oscillating cylinder by its printed face and it makes it possible to maintain the relative positioning of the web in the cutting machine with respect to the other devices upstream.
  • the control of the oscillation movement of the oscillating cylinder is provided on one side of the device, which results in a great simplification.
  • the supply device also includes means allowing fine adjustment, during the operation of the device, of the adjustment of the amplitude of the oscillating movement of the oscillating cylinder. easily realize a servo of the device to any size such as the tension of the sheet.
  • the law of advancement of the sheet comprises an acceleration phase in which the instantaneous value of the acceleration is controlled in particular so that at the start of the sheet, which is a critical phase since it is necessary to ensure detachment of the web of the machine tool, this acceleration has a low value and that it then increases gradually.
  • the device according to the invention is intended to ensure the intermittent supply of a sheet l of any material, printed or not, which is worked at standstill by a machine 2 located downstream, such as for example a press to cut flat.
  • the sheet 1 is supplied continuously upstream, at a constant speed v, from any source, such as a reel, and it moves from right to left in FIG. 1, towards the machine shaping 2.
  • the feed device comprises two tangent horizontal and transverse cylinders between which the web passes, namely a lower call cylinder 3 and an upper counter cylinder 4.
  • the call cylinder 3 which is located under the sheet, is rotated from the previous machine, which is for example a reel, by means of a mechanical transmission shown schematically in Figure 1 and designated as a whole by the reference C.
  • the cylinder call 3 is secured to a coaxial gear 5 which is engaged with a coaxial gear 6 secured to an oscillating cylinder 7 located above the ply 1 so that the two cylinders 3 and 7 rotate in opposite directions.
  • the ratio of the pitch diameters of these gears 5,6 corresponds to that of the diameters of the two cylinders 3 and 7 so that they always rotate at the same peripheral speed.
  • the oscillating cylinder 7 is rotatably mounted on a support comprising a pair of parallel arms 8 between the ends of which the oscillating cylinder 7 extends.
  • the parallel arms 8 are fixed radially to the two extremi tees of a hollow shaft 9, horizontal and transverse, passing coaxially right through the call cylinder 3.
  • this arrangement is not limiting and the support of the oscillating cylinder 7 could comprise only one radial arm 8 , the oscillating cylinder 7 then being mounted in cantilever on this single arm 8.
  • the call cylinder 3 is rotatably mounted on the hollow shaft 9 via of bearings 11.
  • the hollow shaft 9 is itself mounted to oscillate in the uprights of a frame 12, by means of bearings 13.
  • the hollow shaft 9 which carries the arms 8 and consequently the oscillating cylinder 7, is secured, at one of its ends, in this case at its straight end in FIG. 2, to a radial lever 14 by which an oscillating movement is transmitted to the arms 8.
  • a radial slide 15 On this lever 14 is fixed, in an adjustable longitudinal position, a radial slide 15, by means of screws 16.
  • a slide 17 which can be moved radially on needle shoes 18.
  • This slide 17 is integral with the lower end of a threaded rod 19 which extends along the slide 15 and the lever 14 and which is engaged, near the 'axis of oscillation of this lever 14, with a nut 21 itself secured to a toothed-axial pulley 22 surrounding the upper part of the threaded adjustment rod 19.
  • This toothed pulley 22 is coupled, by means of a toothed belt 23 extending right through the hollow shaft 9, to another pulley e tooth 24 located on the other side of the device frame and which can be rotated by a suitable control mechanism not
  • the slide 17 is integral with a horizontal and transverse axis 25 on which is articulated, by means of bearings 26, one end of a connecting rod 27.
  • the other end of the connecting rod 27 is articulated on a crank pin 28 itself same articulated, around an axis 29, on a drum 31 rotating around a horizontal and transverse axis 32, this drum 31 being driven from the general control C of the device.
  • the crank pin 28 carries, at its free end, two cam rollers 33, 34 which roll respectively, in two different transverse planes, inside a fixed cam 35 and outside a fixed cam follower 36 , these two cams having a profile calculated according to the desired law of motion.
  • the ply 1 passes at constant speed v between the call cylinder 3 and the upper counterpart cylinder 4, it is wound on a part of the peripheral surface of the call cylinder 3, then it passes around half of the peripheral surface of the oscillating cylinder 7, which rotates at the same peripheral speed v as the cylinder 3, due to their coupling by the two gears 5,6.
  • the ply rises to the left and passes over a part of the periphery of a suction cylinder or "sliding" cylinder 37 ensuring the permanent tensioning of the ply 1 before entry in the machine 2.
  • This suction cylinder 37 constantly rotates at a peripheral speed v t greater than that v of the sheet.
  • a suction box 38 connected to a source of vacuum.
  • This suction box 38 is in contact with a part of the internal surface of the cylinder 37 whose side surface is pierced with holes 39.
  • the position of the suction box 38 and its extension in the direction of rotation of the suction cylinder 37 correspond to the zone of contact of the ply on the peripheral surface of the suction cylinder 37.
  • the control mechanism of the oscillating cylinder 7 causes this cylinder to move down and to the right to lengthen the path of the sheet between the call cylinder 3 and the suction cylinder 37, because upstream the sheet 1 continues to be delivered at the same speed v.
  • the peripheral speed of the oscillating cylinder 7, which is rotated from the call cylinder 3 is equal to the peripheral speed of this call cylinder 3, that is to say at the natural speed of the ply 1, during this pivoting movement of the arms 8 down and downward of the oscillating cylinder 7, there is no sliding between the printed upper side of the ply 1 and the oscillating cylinder 7.
  • the oscillating cylinder 7 has an oscillating movement, the period of which corresponds to the intermittent advance cycle of the ply 1 in the shaping machine 2.
  • the pivoting movement of the arms 8 and of the oscillating cylinder 7 which they carry, around the axis of the call cylinder 3 is controlled by the rotation of the drum 31 which is rotated from the general control C.
  • the amplitude of the oscillation of the arms 8 and of the oscillating cylinder 7 which is a function of the format, depends on the distance between the axis 25 of articulation of the connecting rod 27 on the slide 17, and the axis of oscillation, that is to say the axis of the call cylinder 3.
  • This distance can be adjusted roughly, when the device is stopped, by adjusting the longitudinal position of the slide 15 on the lever 14 and by locking the slide 15 in the appropriate position, by means of the screws 16. Also the angular setting of the cams 35.36. To this coarse adjustment can be added a fine adjustment which can be carried out during the operation of the device. This fine adjustment is carried out, during operation, by rotating the driving pulley 24 which transmits its movement, by means of the toothed belt 23, to the other toothed pulley 22 itself secured to the nut 21 screwed on the threaded rod 19. The rotation of the nut 21 consequently results in a translation of the rod 19 and of the slide 17 which it carries.
  • the toothed belt 23 allows this fine adjustment to be carried out easily on the fact that it can be deformed to follow the oscillation movement of the arms 8. These fine adjustment means in operation also make it possible to optionally provide servo-control of the device. to any size, such as the web tension.
  • the driving pulley 24 can be coupled to the shaft of a servomotor 37 supplied electrically by a device 38 connected to a sensor 39 of the tension of the ply 1, of so as to rotate the driving pulley 24 and consequently modify the setting of the amplitude of oscillation as a function of the tension of the ply.
  • the oscillating cylinder 7 is mounted, on the arms 8, relatively distant from the call cylinder 3 which is in this case located above the ply 1 as the oscillating cylinder 7.
  • the two cylinders 7 and 3 probe coupled by means of a transmission mechanism 41 ensuring the rotary drive of the oscillating cylinder 7 in the same direction and at the same peripheral speed as the call cylinder 3.
  • the transmission mechanism 41 may consist of a gear train, an endless toothed belt passing over two toothed wheels respectively secured to the two cylinders 3 and 7, etc.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Advancing Webs (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP88401817A 1987-07-30 1988-07-12 Periodische Papierbahnzufuhr einer Maschine, insbesondere für eine blattabschneidende Presse Expired - Lifetime EP0305230B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88401817T ATE72554T1 (de) 1987-07-30 1988-07-12 Periodische papierbahnzufuhr einer maschine, insbesondere fuer eine blattabschneidende presse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8710817A FR2618770B1 (fr) 1987-07-30 1987-07-30 Dispositif d'alimentation pour une machine travaillant sur une nappe de materiau a l'arret, notamment pour une presse a decouper a plat
FR8710817 1987-07-30

Publications (2)

Publication Number Publication Date
EP0305230A1 true EP0305230A1 (de) 1989-03-01
EP0305230B1 EP0305230B1 (de) 1992-02-12

Family

ID=9353723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88401817A Expired - Lifetime EP0305230B1 (de) 1987-07-30 1988-07-12 Periodische Papierbahnzufuhr einer Maschine, insbesondere für eine blattabschneidende Presse

Country Status (5)

Country Link
US (1) US4863086A (de)
EP (1) EP0305230B1 (de)
AT (1) ATE72554T1 (de)
DE (1) DE3868368D1 (de)
FR (1) FR2618770B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0684200A1 (de) * 1994-04-25 1995-11-29 Bobst S.A. Zuführstation für eine kontinuierlich zugeführte Materialbahn zu einer die Bahn sequentiell bearbeitenden Station
EP0719721A2 (de) * 1994-12-26 1996-07-03 Canon Kabushiki Kaisha Bahnförderapparat und damit ausgerüstetes Druckgerät
EP0742170A2 (de) * 1995-05-08 1996-11-13 Bobst S.A. Vorrichtung zum Zuführen einer kontinuierlich ankommenden Bahn in einer Station, die sie in angehaltenem Zustand bearbeitet
AU699040B2 (en) * 1995-05-08 1998-11-19 Bobst Sa Feeding device for processing a continuous moving web in a station in which said web is in a standstill position

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672579B1 (fr) * 1991-02-11 1994-02-11 Komori Chambon Sa Dispositif d'alimentation pour une machine travaillant periodiquement sur une nappe de materiau a l'arret, notamment une presse a decouper a plat.
US5407513A (en) * 1993-10-14 1995-04-18 The Procter & Gamble Company Apparatus and process for cyclically accelerating and decelerating a strip of material
US6050517A (en) * 1998-09-22 2000-04-18 Curt G. Joa Counterbalanced web accumulator
JP3925791B2 (ja) * 2002-03-08 2007-06-06 リコープリンティングシステムズ株式会社 印刷装置
CN1930068B (zh) * 2004-03-05 2010-11-24 株式会社瑞光 织物变速装置
KR100887771B1 (ko) 2007-06-25 2009-03-09 서성운 필름원단의 이완을 방지하는 롤러장치 및 이를 장착한롤원단 공급시스템
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
CN102239096B (zh) 2008-12-08 2015-04-08 鲍勃斯脱股份有限公司 用于驱动包装生产机中的平面基板的设备
TWI494261B (zh) * 2010-07-14 2015-08-01 Bobst Sa 用於轉換網狀基材，進料站及包裝生產機之保護轉換單元的方法
CN106516841B (zh) * 2016-12-16 2018-03-06 常州数控技术研究所 能吸收张力波动的浮动辊机构
JP2018187809A (ja) * 2017-04-28 2018-11-29 株式会社ミマキエンジニアリング 印刷装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2205053A5 (de) * 1972-10-30 1974-05-24 Baele Gangloff Ste Nouvelle
FR2408538A1 (fr) * 1977-11-11 1979-06-08 Bobst Sa Dispositif de commande du defilement d'une matiere en bande delivree en continu a une machine la travaillant sequentiellement
FR2474932A1 (fr) * 1980-02-05 1981-08-07 Citroen Sa Installation de decoupe de profiles souples

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US3515327A (en) * 1968-06-19 1970-06-02 Wean Ind Inc Apparatus for storing a variable length of strip
US3727820A (en) * 1972-02-18 1973-04-17 Hunter Eng Co Method and apparatus for continuously processing strip
DE2356009C3 (de) * 1973-11-09 1982-02-04 Agfa-Gevaert Ag, 5090 Leverkusen Vorrichtung zur Einstellung und Messung von Bahnspannungen
US3926355A (en) * 1974-10-21 1975-12-16 Bobst Champlain Inc Apparatus for intermittently feeding lengths of continuous sheet material at a constant velocity
CH602462A5 (de) * 1975-11-26 1978-07-31 Bobst Fils Sa J
US4071178A (en) * 1976-06-07 1978-01-31 Copp Robert M Machine for use with moving webs
US4609336A (en) * 1984-10-17 1986-09-02 Gencorp Inc. Apparatus and method for extrusion
US4798353A (en) * 1987-02-05 1989-01-17 Printpack, Inc. Web slitting system and slack inducing apparatus and method useful therein

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2205053A5 (de) * 1972-10-30 1974-05-24 Baele Gangloff Ste Nouvelle
FR2408538A1 (fr) * 1977-11-11 1979-06-08 Bobst Sa Dispositif de commande du defilement d'une matiere en bande delivree en continu a une machine la travaillant sequentiellement
FR2474932A1 (fr) * 1980-02-05 1981-08-07 Citroen Sa Installation de decoupe de profiles souples

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0684200A1 (de) * 1994-04-25 1995-11-29 Bobst S.A. Zuführstation für eine kontinuierlich zugeführte Materialbahn zu einer die Bahn sequentiell bearbeitenden Station
US5595335A (en) * 1994-04-25 1997-01-21 Bobst Sa Infeed station for converting a continuously moving web-like sheet into an intermittently fed web-like sheet for a subsequent processing station
CN1061943C (zh) * 1994-04-25 2001-02-14 鲍勃斯脱股份有限公司 连续地输送和顺序地处理带材的输入台
EP0719721A2 (de) * 1994-12-26 1996-07-03 Canon Kabushiki Kaisha Bahnförderapparat und damit ausgerüstetes Druckgerät
EP0719721A3 (de) * 1994-12-26 1997-03-26 Canon Kk Bahnförderapparat und damit ausgerüstetes Druckgerät
US5883654A (en) * 1994-12-26 1999-03-16 Canon Kabushiki Kaisha Printer having sheet convey apparatus for conveying adhered sheet
EP0742170A2 (de) * 1995-05-08 1996-11-13 Bobst S.A. Vorrichtung zum Zuführen einer kontinuierlich ankommenden Bahn in einer Station, die sie in angehaltenem Zustand bearbeitet
EP0742170A3 (de) * 1995-05-08 1997-10-22 Bobst Sa Vorrichtung zum Zuführen einer kontinuierlich ankommenden Bahn in einer Station, die sie in angehaltenem Zustand bearbeitet
AU699040B2 (en) * 1995-05-08 1998-11-19 Bobst Sa Feeding device for processing a continuous moving web in a station in which said web is in a standstill position
CN1071279C (zh) * 1995-05-08 2001-09-19 鲍勃斯脱股份有限公司 在带材不断进给的工位中需停带对其加工时的供带装置

Also Published As

Publication number Publication date
FR2618770B1 (fr) 1990-01-05
ATE72554T1 (de) 1992-02-15
FR2618770A1 (fr) 1989-02-03
DE3868368D1 (de) 1992-03-26
US4863086A (en) 1989-09-05
EP0305230B1 (de) 1992-02-12

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