EP0869094A2 - Transport von Bogen - Google Patents

Transport von Bogen Download PDF

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Publication number
EP0869094A2
EP0869094A2 EP98302676A EP98302676A EP0869094A2 EP 0869094 A2 EP0869094 A2 EP 0869094A2 EP 98302676 A EP98302676 A EP 98302676A EP 98302676 A EP98302676 A EP 98302676A EP 0869094 A2 EP0869094 A2 EP 0869094A2
Authority
EP
European Patent Office
Prior art keywords
sheet
path
gas blast
suction
roller
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Withdrawn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
EP98302676A
Other languages
English (en)
French (fr)
Other versions
EP0869094A3 (de
Inventor
Graham Peter Johnson
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.)
Strachan and Henshaw Machinery Ltd
Original Assignee
Strachan and Henshaw Machinery Ltd
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 Strachan and Henshaw Machinery Ltd filed Critical Strachan and Henshaw Machinery Ltd
Publication of EP0869094A2 publication Critical patent/EP0869094A2/de
Publication of EP0869094A3 publication Critical patent/EP0869094A3/de
Withdrawn legal-status Critical Current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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • B65H29/6627—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed in combination with auxiliary means for overlapping articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or 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
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/40—Fluid power drive; Fluid supply elements
    • B65H2406/41—Valves
    • B65H2406/411—Spool or slide valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices

Definitions

  • a printing apparatus To print a multiplicity of sheets rapidly and successively, and for those sheets then to be carried by a suitable conveyor arrangement to a location in which the sheets are to be stacked or otherwise collated.
  • Such printing apparatuses are generally arranged to print the sheets as rapidly as possible, so the transportation arrangements must be efficient.
  • the printing apparatus to print on a web of material, and then for the web subsequently to be cut into sheets. Again, the transportation of those sheets needs to be efficient to match the speed of printing. Although many attempts have been made to improve the speed of printing, such attempts are of little value if the sheets cannot subsequently be transported satisfactorily.
  • the present invention has several aspects, which address the various different problems of sheet transportation that were identified earlier.
  • the first aspect of the invention is concerned with overlapping one sheet with another.
  • To generate such an overlap it is known to pass the sheets from a tape travelling at one speed, to a tape travelling at a slower speed.
  • it is desirable that the movement of a sheet passing to the slower tape is retarded to allow the leading edge of the subsequent sheet to pass over the proceeding sheet to generate an appropriate overlap.
  • a suction device which, by applying a vacuum or reduced pressure to the sheet, grips the sheets sufficiently to retard its movement, generally without halting that movement completely.
  • the first aspect of the present invention proposes that the application of suction to the leading sheet and the application of a gas blast to the trailing sheet are both synchronised by the movement of a single body acting on both the suction system and the gas blast system. Normally, the suction will be applied adjacently trailing edge of the leading sheet and the gas blast will be applied adjacent to the leading edge of the trailing sheet.
  • the currently preferred synchronisation arrangement using such a single moving body is to arrange for the gas blast to be applied just as the suction ceases.
  • This timing has the advantage that the gas blast then overrides any residual suction effect.
  • the orifices may therefore be opened rapidly, held open for a relatively long period, and then closed rapidly, ensuring a more satisfactory gripping of the sheet by the suction device.
  • the ratio of the times when the vacuum orifices are fully open to the times when they are partially open is at least 40%, more preferably 60%, whereas in known systems the ratio is less than 20%.
  • the second aspect of the present invention is concerned with selectively allowing sheets to pass on to one of two paths, by providing a diverting apparatus at the junction of the two paths, which diverting apparatus causes a sheet which arrives at the diverting apparatus to pass either to the first or the second path, as is desired.
  • the diverting apparatus to have a moveable beak (also sometimes referred to as a wing).
  • the cross-section of the beak, perpendicular to the plane of the sheet, is generally in the form of an isosceles triangle, with the apex pointing in the opposite direction to the movement of the sheets.
  • the beak is moveable so that its apex may be positioned on one side or the other of the path of the sheet. With the apex on one side, the sheet either passes the beak without contacting it, or possibly collides with one side of the beak, to cause the sheet to move along a first path.
  • the leading edge of the sheet collides with the other side of the beak and is thus diverted to a second path.
  • the second aspect of the present invention therefore proposes an arrangement in which there is both a moveable roller and a moveable beak, with the movement of the roller and the beak being synchronised.
  • a sheet In one position of the roller and beak, a sheet does not collide with either of them.
  • a sheet In a second position, a sheet contacts the roller or the position of a tape in contact with the sheet is altered and path of the sheet is diverted by a small amount. The sheet then strikes a side of the beak, to divert the sheet further onto the other path.
  • a first tape 10 transports sheets of e.g. paper with a linear speed V from e.g. a paper reel or printing apparatus.
  • the tape 10 terminates at a roller 11 and there is then a gap to a roller 12 of a second tape 13. That second tape 13 transports the sheets at a slower speed than the first tape 10, e.g. 1 ⁇ 2 V.
  • a suction device 14 Positioned between the rollers 11 and 12 is a suction device 14, which acts to grip the trailing part of a sheet which has passed from the tape 10 to the tape 13.
  • an upper plate 15 of the suction device 14 has an orifice 16 therein, which is aligned with an outlet 17 of a vacuum system 18.
  • the vacuum system 18 may be conventional and is therefore not described in detail.
  • a moveable plate 20 with an opening 21 therein. In the position shown in Fig. 1, the opening 21 is not aligned with the orifice 16 and the outlet 17, so that no suction is applied to the trailing part of a sheet 22 over the suction device 14. If, however, the plate 20 is moved so that the opening 21 is aligned with the orifice 16 and the opening 17, suction is applied to the sheet 22 in the direction of arrow A.
  • Fig. 1 also shows that there may be a gripping roller 35 acting on the sheet 22, being transported by the tape 13. That gripping roller 35 needs to be positioned sufficiently far from the roller 12 that it only grips a sheet after the sheet has been released from the suction device. It can also be seen from Fig. 1 that the upper surface of the tape 13 is slightly lower than the upper surface of the tape 10. This assists in the overlap operation. Moreover, the leading and trailing corners of the suction device 14 may be provided with rollers 36, 37 to prevent damage to sheets which strike those parts of the suction device 14.
  • the spacing and position of the openings 47 in the tape 46 needs to be determined so that, at the times when the suction effect and the gas blast effect are needed, appropriate openings 47 will be aligned with the outlets 17, 31 of the suction device 18 and the gas blast device 30 respectively. This is relatively straight forward to do since the tape 46 is moving at the same speed as the sheet 22 and the tape 13.
  • the drive 44 does not move the plate 20 in such a uniform way. Instead, it is preferable for the plate 20 to be moved so that there is a relatively long time in which the outlets 44 are substantially unblocked, and the time in which they are partially blocked is relatively short.
  • the resulting movement of the plate 20 is shown in Fig. 4b, where the time 52 in which the outlets 44 are substantially unblocked is a very large proportion of the time 53 when they are not substantially completely blocked.
  • the ratio of times 52 to 53 should be at least 40%, more preferably 60%. In this way a more accurate suction effect can be achieved.
  • Such movement of the plate 20 can be achieved by using a servo motor in the drive means 41, and controlling that servo motor to achieve the desired movement.
  • the diverting roller 66 will move to the position 75 shown by dotted lines, and the beak 67 will move to the position 76 also shown by dotted lines. Stops 77, 78 may be provided adjacent the bar 70 to limit the movement thereof and so limit the movement of the diverting roller 66 and the beak 67.
  • a sheet 79 passes from the tape 60 so that its leading edge contacts the diverting roller 66. That diverting roller 66 causes the leading edge to be forced downwardly through the nip between the diverting roller 66 and the supporting roller 68. The leading edge then strikes a side of the beak 67 at a shallow angle, and is diverted downwardly further to pass to the tape 63. Since the angle of impact made by the leading edge of the sheet 79 with the diverting roller 66, and the angle made with the side 80 of the beak are very shallow, the risk of damage to the leading edge of the sheet 79 is very small.
  • tie rod 73 adjustable. This has the advantage that it enables a position of the apex of the beak 67 to be adjusted, thereby emitting the position of the beak 67 when it is to divert sheet to be position accurately. Also, by making the distance between the pivot point 71 and the connection 82 between the tie rod 73 and the bar 70 adjustable, it is possible to adjust the ratio of movement of the diverting roller 66 and the beak 67 when they move between the position shown in solid lines in Fig. 5 and the position shown in dotted lines. These two adjustment possibilities enable accurate positioning of the diverting roller 66 and the beak 67.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
EP98302676A 1997-04-04 1998-04-06 Transport von Bogen Withdrawn EP0869094A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9706898 1997-04-04
GBGB9706898.5A GB9706898D0 (en) 1997-04-04 1997-04-04 Transporting sheets

Publications (2)

Publication Number Publication Date
EP0869094A2 true EP0869094A2 (de) 1998-10-07
EP0869094A3 EP0869094A3 (de) 1998-10-21

Family

ID=10810312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98302676A Withdrawn EP0869094A3 (de) 1997-04-04 1998-04-06 Transport von Bogen

Country Status (2)

Country Link
EP (1) EP0869094A3 (de)
GB (1) GB9706898D0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1016610A2 (de) * 1998-11-05 2000-07-05 E.C.H. WILL GmbH Vorrichtung zum Transport von einander zu überlappenden Bögen, insbesondere Papierbögen
EP1266854A2 (de) * 2001-06-15 2002-12-18 E.C.H. WILL GmbH Fördereinrichtung für Bogenlagen und Verfahren zum Zusammenbringen von Bogenlagen
ES2222064A1 (es) * 2001-03-21 2005-01-16 Jagenberg Querschneider Gmbh Dispositivo para el corte transversal de bandas de material, en particular de bandas de carton.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3336028A (en) * 1964-07-30 1967-08-15 Jagenberg Werke Ag Apparatus for conveying and depositing sheets moving from cross cutters or other paper handling machines
DE1917616A1 (de) * 1969-04-05 1970-10-08 Jagenberg Werke Ag Vorrichtung zum Abbremsen und UEberlappen von auf einem Stapel abzulegenden Bogen aus Papier od.dgl.
GB2009714A (en) * 1977-12-10 1979-06-20 Jagenberg Werke Ag Sheet delivery apparatus
GB2252549A (en) * 1991-02-06 1992-08-12 Fmc Corp Overlapping and winding items, e.g. bags

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3336028A (en) * 1964-07-30 1967-08-15 Jagenberg Werke Ag Apparatus for conveying and depositing sheets moving from cross cutters or other paper handling machines
DE1917616A1 (de) * 1969-04-05 1970-10-08 Jagenberg Werke Ag Vorrichtung zum Abbremsen und UEberlappen von auf einem Stapel abzulegenden Bogen aus Papier od.dgl.
GB2009714A (en) * 1977-12-10 1979-06-20 Jagenberg Werke Ag Sheet delivery apparatus
GB2252549A (en) * 1991-02-06 1992-08-12 Fmc Corp Overlapping and winding items, e.g. bags

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1016610A2 (de) * 1998-11-05 2000-07-05 E.C.H. WILL GmbH Vorrichtung zum Transport von einander zu überlappenden Bögen, insbesondere Papierbögen
EP1016610A3 (de) * 1998-11-05 2001-05-02 E.C.H. WILL GmbH Vorrichtung zum Transport von einander zu überlappenden Bögen, insbesondere Papierbögen
US6338482B1 (en) 1998-11-05 2002-01-15 E.C.H. Will Gmbh Apparatus for converting a file of successive sheets into a stream of partially overlapping sheets
ES2222064A1 (es) * 2001-03-21 2005-01-16 Jagenberg Querschneider Gmbh Dispositivo para el corte transversal de bandas de material, en particular de bandas de carton.
EP1266854A2 (de) * 2001-06-15 2002-12-18 E.C.H. WILL GmbH Fördereinrichtung für Bogenlagen und Verfahren zum Zusammenbringen von Bogenlagen
EP1266854A3 (de) * 2001-06-15 2003-11-19 E.C.H. WILL GmbH Fördereinrichtung für Bogenlagen und Verfahren zum Zusammenbringen von Bogenlagen
US6945529B2 (en) 2001-06-15 2005-09-20 E.C.H. Will Gmbh Conveying arrangement for sheet quires and method for combining sheet quires
US7059598B2 (en) 2001-06-15 2006-06-13 E.C.H. Will Gmbh Conveying arrangement for sheet quires and method for combining sheet quires

Also Published As

Publication number Publication date
EP0869094A3 (de) 1998-10-21
GB9706898D0 (en) 1997-05-21

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