GB2270305A - Continuously unloading sheet printing presses. - Google Patents

Continuously unloading sheet printing presses. Download PDF

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Publication number
GB2270305A
GB2270305A GB9318225A GB9318225A GB2270305A GB 2270305 A GB2270305 A GB 2270305A GB 9318225 A GB9318225 A GB 9318225A GB 9318225 A GB9318225 A GB 9318225A GB 2270305 A GB2270305 A GB 2270305A
Authority
GB
United Kingdom
Prior art keywords
sheet
cassette
pile
unit
sheets
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
GB9318225A
Other versions
GB9318225D0 (en
GB2270305B (en
Inventor
Martin Lange
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of GB9318225D0 publication Critical patent/GB9318225D0/en
Publication of GB2270305A publication Critical patent/GB2270305A/en
Application granted granted Critical
Publication of GB2270305B publication Critical patent/GB2270305B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B65H33/00—Forming counted batches in delivery pile or stream of articles
    • B65H33/16—Forming counted batches in delivery pile or stream of articles by depositing articles in batches on moving supports
    • B65H33/18—Forming counted batches in delivery pile or stream of articles by depositing articles in batches on moving supports with separators between adjacent batches
    • 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
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/042—Intermediate conveyors, e.g. transferring 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/16—Delivering or advancing articles from machines; Advancing articles to or into piles by contact of one face only with moving tapes, bands, or chains
    • B65H29/18—Delivering or advancing articles from machines; Advancing articles to or into piles by contact of one face only with moving tapes, bands, or chains and introducing into a pile
    • 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
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/242—Suction bands or 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4214—Forming a pile of articles on edge
    • B65H2301/42146—Forming a pile of articles on edge by introducing articles from above
    • 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
    • B65H2406/323—Overhead suction belt, i.e. holding material against gravity
    • 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
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Description

2270305 CONTINUOUSLY UNLOADING SHEET PRINTING PRESSES The invention
relates to sheet printing presses, and particularly to a process and an arrangement of continuously unloading printed sheets fed by means of a gripper system and transport system from a print unit of a printing press using a high pile delivery.
Various unloading devices for sheet printing presses are known in which the printed sheets coming from the printing unit by means of a gripper system and transport chains, are transported to the delivery and deposited in a pile. with continuous transport of sheets. pile change of the piles is necessary. According to CH-A-629 452f is the intermediate insertion of an auxiliary'pile is known in order to take the full pile out of the pile space by means of a fork-lift truck. Furthermore, from DE-B-3 304 673. the use of an auxiliary pile platform in connection with a clamping device is known. Disadvantageous in the known solutions is that the loss in time for this work is relatively high and smearing off or adhesion together of, the freshly-printed sheets caused by the increasing weight of the pile (flat pressing) cannot be avoided.
From DE-B-461 709, a discontinuously-working unloading unit for individual sheet deposition is known. The sheets are unloaded obliquely, but lying on their surface. This unloading principle is unusable for today's customary press speeds (15,000 sheets/hour).
For correct edge alignment of sheets to be piled horizontally. the blowing in of air on to the underside of the sheet as it runs in is known from DE-A-2 548 788.
For the "soft" running in of sheets to be deposited on the sheet edge, the solution is not suitable.
High edge piling of individual sheets which emerge in free condition is known from DE-C-3 411 984. This is solution concerns the individual putting together of sheets deposited horizontally on various piles to manufacture books. By means of this, a sorting problem is solved, but means for the continuous unloading of a high pile delivery are not disclosed.
The object of the present invention is to permit the continuous unloading of a sheet printing press by means of which the compaction on piling of the sheets is reduced, and the smearing or sticking together of the sheets is prevented.
In accordance with the invention, there is provided a process and apparatus for removing the output pile of a sheet printing press as claimed in the appended claims.
The present invention provides continuous unloading of a sheet printing press. particularly at high machine speeds without sticking together of the sheets. An areal loading perpendicular to the paper surface only arises minimally since the predominant part of the force of gravity acts on the sheet edge. The technically determined time requirements of customary pile change can be omitted with the solution disclosed. The feed of empty cassettes to the printing press, and the removal of cassettes filled with a pile of sheets from the printing press is also possible by means of circulating feed paths (such as carousel feeders). Depending upon need, a blower unit can be arranged on both sides and from below in order to support the pile pneumatically as well as to accelerate the drying of the sheets. The unloading of the printing press can take place according to choice in either lateral direction. The inclined guide unit can be constructed in a further embodiment also as a suction is transport unit.
The invention will be described in more detail with reference to an exemplary embodiment shown in the accompanying drawings, in which:
Figure 1 shows a side view of an delivery with unloading units arranged at right angles to the sheet feed direction, and Figure 2 a front view of the delivery along the section A-A shown in Figure 1.
A printed sheet 1 coming from a printing press is fed by means of endless transport chains 3 and gripper system 6 on a narrow path into the region of the delivery 4. From the gripper system 6, the sheet 1 is deposited on a suction feed unit 2, such as a suction belt table, transported laterally to a guide unit 5, such as a sliding plate with timed cam rollers which extracts each sheet from the suction feed and piles it at an acute angle (a) to the horizontal of about 800 with its high edge in the fibre direction of the paper. into a cassette 8. 5 Below the circulating gripper system 6 there is arranged, at right angles to the sheet feed direction, the suction transport unit 2 with a subsequent guide unit 5 inclined downwardly.
In the present example, the transport direction of the printed sheet 1 runs over the suction feed unit 2 from the press side to the delivery. Each sheet 1 is transported synchronously via the guide unit 5 into the is cassette 8. The sheet 1 slides on an air cushion which may be augmented by means of a stream of air directed at the base of the cassette by means of a blower (not shown). The cassettes 8 are secured to horizontal transport units 7 in positive and releasable fashion.
Each cassette 8 consists essentially of an L-shaped support which can be releasably attached to the transport unit 7 with its major surface inclined at an angle (a) of about 80 to the horizontal. The transport unit 7 feeds empty cassettes 8 to be filled in the direction of arrow 9 towards the sheet delivery 4 and transports the filled cassettes 8 out from the other side of sheet delivery 4 to a further processing or unloading station. After being unloaded, the empty cassettes 8 are fed back anew to the press delivery.

Claims (8)

1. Process for the continuous unloading of a sheet printing press having a high pile delivery and a circulating sheet gripper system, in which each sheet is freed from the gripper system and transported at right angles to the sheet-feed direction and is delivered at an acute angle to the horizontal, with its high edge in the fibre direction of the paper into a cassette adapted to support an inclined pile of sheets.
2. A process as claimed in Claim 1. in that each sheet being fed to the cassette has part of its weight taken by an air cushion generated by means of a stream of air is directed at at least one sheet edge.
3. Apparatus for the continuous unloading of a sheet printing press, in which below the sheet delivery system of the press is a suction feeder unit at right angles to the sheet-feed direction, and a downwardly inclined guide unit for removing each sheet from the feeder unit and guiding it towards a transport unit carrying at least one cassette for holding a pile of sheets inclined at an acute angle to the horizontal.
4. Apparatus as claimed in Claim 3, in which each cassette is releasably connected to the transport unit in series with a plurality of like cassettes.
5. Apparatus as claimed in to Claim 3 or 4, in which the suction feeder unit consists of a suction belt table.
6. Apparatus as claimed in any of Claims 3 to 5. in which the inclined guide unit is a slide plate with cam rollers driven in timed fashion.
7. Apparatus as claimed in any of Claims 3 to 5, in which the inclined guide unit is a further suction belt table.
8. Apparatus for unloading a sheet printing press substantially as described herein with reference to and as shown in the accompanying drawings.
GB9318225A 1992-09-02 1993-09-02 Continuously unloading sheet printing presses Expired - Fee Related GB2270305B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924229220 DE4229220C2 (en) 1992-09-02 1992-09-02 Sheet delivery for a sheet printing machine

Publications (3)

Publication Number Publication Date
GB9318225D0 GB9318225D0 (en) 1993-10-20
GB2270305A true GB2270305A (en) 1994-03-09
GB2270305B GB2270305B (en) 1995-11-08

Family

ID=6467009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9318225A Expired - Fee Related GB2270305B (en) 1992-09-02 1993-09-02 Continuously unloading sheet printing presses

Country Status (3)

Country Link
DE (1) DE4229220C2 (en)
FR (1) FR2695113B1 (en)
GB (1) GB2270305B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4442557B4 (en) * 1994-11-30 2005-12-22 Heidelberger Druckmaschinen Ag Boom of a sheetfed press

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR710938A (en) * 1930-03-25 1931-08-31 Mix Et Genest Ag Unloading device for conveyor belts or belts
DE2157993C2 (en) * 1971-11-23 1974-01-31 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Device for transporting sheets in a sheet-fed printing machine
IT954764B (en) * 1972-04-26 1973-09-15 Meccanotecnica Spa AUTOMATIC DEVICE FOR UNLOADING SIGNATURES FROM TABLE GLUING MACHINES AND RETRIEVING AND OR INSERTING TABLES OUT OF TEXT TO AND OR IN THE SIGNATURES
DE2548788A1 (en) * 1975-10-31 1977-05-12 Friedrich August Lang Board stacking and lining up installation - with stacking frame and blower directing air onto last sheet for accurate positioning
DE2714612A1 (en) * 1977-04-01 1978-10-05 Roland Offsetmaschf DEVICE FOR AUTOMATIC STACK CHANGING ON THE BOOM OF A PRINTING MACHINE, ESPECIALLY BOW-ROTARY PRINTING MACHINE
DE3304673C2 (en) * 1983-02-11 1986-12-18 Jagenberg AG, 4000 Düsseldorf Method for changing a stack of sheets with uninterrupted conveyance of sheets to the stacking point
US4487405A (en) * 1983-03-29 1984-12-11 Stobb, Inc. Method and apparatus for sheet gathering in a side-by-side generally vertical edge alignment
DE4139388C2 (en) * 1991-11-29 1994-06-30 Roland Man Druckmasch Arrangement for the continuous disposal of a sheet-fed printing machine

Also Published As

Publication number Publication date
DE4229220C2 (en) 1995-10-19
FR2695113B1 (en) 1996-03-15
DE4229220A1 (en) 1994-03-03
GB9318225D0 (en) 1993-10-20
GB2270305B (en) 1995-11-08
FR2695113A1 (en) 1994-03-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990902