US20050189705A1 - Device for aligning sheets deposited on a sheet stack - Google Patents

Device for aligning sheets deposited on a sheet stack Download PDF

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Publication number
US20050189705A1
US20050189705A1 US11/057,632 US5763205A US2005189705A1 US 20050189705 A1 US20050189705 A1 US 20050189705A1 US 5763205 A US5763205 A US 5763205A US 2005189705 A1 US2005189705 A1 US 2005189705A1
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US
United States
Prior art keywords
leading edge
pivot axis
edge stops
stack
sheet
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.)
Abandoned
Application number
US11/057,632
Other languages
English (en)
Inventor
Michael Diews
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Assigned to HEIDELBERGER DRUCKMASCHINEN AKTIENGESELLSCHAFT reassignment HEIDELBERGER DRUCKMASCHINEN AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DIEWS, MICHAEL
Publication of US20050189705A1 publication Critical patent/US20050189705A1/en
Abandoned 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
    • B65H31/00—Pile receivers
    • B65H31/32—Auxiliary devices for receiving articles during removal of a completed 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
    • B65H29/02—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
    • B65H29/041—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 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
    • B65H31/00—Pile receivers
    • B65H31/34—Apparatus for squaring-up piled articles
    • B65H31/38—Apparatus for vibrating or knocking the pile during piling
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/54—Auxiliary process performed during handling process for managing processing of handled material
    • B65H2301/542—Quality control
    • B65H2301/5421—Quality control taking samples
    • 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
    • B65H2404/70—Other elements in edge contact with handled material, e.g. registering, orientating, guiding devices
    • B65H2404/72—Stops, gauge pins, e.g. stationary
    • B65H2404/725—Stops, gauge pins, e.g. stationary retractable
    • 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

Definitions

  • the invention lies in the field of sheet processing machines.
  • leading edge stops for the sheets to be deposited on a stack.
  • the sheets conveyed to the stack strike the leading edge stops and are then laid exactly on the sheet stack.
  • leading edge stop mountings substantially two types are known: the first has an upper bearing point, from which the leading edge stop extends downward, the latter being mounted such that it can be pivoted away from the stack.
  • a leading edge stop of the first type is disclosed, for example, German published patent application DE 101 52 844 A1. It is thereby advantageous that, after the stop has been pivoted away, auxiliary stacking devices, such as hurdles or rakes, can easily be pushed in counter to the arriving sheet or arriving sheet stream.
  • auxiliary stacking devices such as hurdles or rakes
  • the bearing shaft located at the top for the individual leading edge stops hampers the removal of proofs.
  • German published patent application DE 34 23 265 A1 shows a leading edge stop with a leading edge stop shaft located at the bottom.
  • leading edge stops arranged such that they can be pivoted away permit the easy removal of proofs, while it is disadvantageous that auxiliary stacking devices, such as hurdles or rakes, for example for non-stop operation, can be pushed in only underneath the leading edge shaft, since the access to the upper stack region is hampered by the leading edge stops and shaft.
  • a device for aligning sheets on a sheet stack comprising:
  • the pivot axis of the leading edge stops is located outside the crossmember for connecting a plurality of leading edge stops—it is possible for the leading edge stop assembly to be arranged such that it can be pivoted away downward or upward as desired. Arranging two independent axes of rotation for the leading edge stop thus permits the leading edge stop to be pivoted away upward for the supply of auxiliary stacking devices and likewise downward for the removal of proofs.
  • the leading edge stop shaft is equipped with a pivoting device that can be driven periodically and moves the leading edge stops at the cycle rate of the incoming sheets, in order to optimize the forming of a stack.
  • the leading edge stops are arranged on a common crossmember, and the stops can be pivoted about the upper pivot axis by means of levers arranged on the crossmember. Furthermore, it is preferable if the leading edge stops are arranged such that they can be pivoted about the lower pivot axis by means of couplers.
  • a drive device is arranged on the lower axis of rotation in order to pivot the leading edge stops cyclically.
  • the device can be employed in the delivery of a sheet processing machine, in particular in a printing press.
  • FIG. 1 is a schematic side view of a sheet-fed printing machine
  • FIG. 2 is a partly diagrammatic view of the device according to the invention from the rear, counter to the sheet transport direction;
  • FIG. 3 is a sectional view of the device according to the invention.
  • FIG. 4 is a section through the device according to the invention in the vertical position of the leading edge stops.
  • FIG. 5 is a section through the device according to the invention in a position in which the leading edge stops are pivoted away from the sheet stack for removing print samples.
  • FIG. 1 there is shown a sheet-processing machine that processes sheets 7 , for example a press 1 .
  • the machine has a feeder 2 , at least one printing unit 3 and 4 and a delivery 6 .
  • the sheets 7 are removed from a sheet stack 8 and, separated or overlapping, are supplied over a feed table 9 to the printing units 3 and 4 .
  • the printing units are conventional printing units each containing a plate cylinder 11 , 12 .
  • the plate cylinders 11 and 12 each have a device 13 , 14 for fixing flexible printing plates.
  • each plate cylinder 11 ; 12 is assigned a device 16 ; 17 for semiautomatic or fully automatic printing plate change.
  • the sheet stack 8 lies on a stack board 10 which can be raised under control.
  • the removal of the sheets 7 takes place from the upper side of the sheet stack 8 by means of a so-called suction head 18 which, inter alia, has a number of lifting and dragging suckers 19 , 21 for separating the sheets 7 .
  • Blowers or blowing devices 22 are provided for loosening the upper layers of sheets, and sensing elements 23 for stack tracking.
  • a number of lateral and rear stops 24 are provided in order to align the sheet stack 8 , in particular the upper sheets 7 of the sheet stack 8 .
  • the delivery 6 has, inter alia, a main stack board 26 to accommodate a sheet stack 27 .
  • the sheets 7 are supplied to the sheet stack 27 by means of a chain gripper system 28 .
  • Leading edge stops 29 are arranged in the upper stack region at the stack leading edge 31 and assist the exact formation of a stack.
  • a plurality of mutually spaced-apart leading edge stops 29 are disposed on a common crossmember 32 , distributed over the sheet width (format width) to be processed.
  • the crossmember 32 in each case has a lever 33 ; 34 which, at its free end, is connected in an articulated manner to a coupler 36 or 37 , respectively.
  • the two hinge points arranged laterally behind the sheet stack 27 have a common upper pivot axis 38 .
  • the coupler 36 ; 37 is in each case fixed to an output shaft 39 ; 41 of an electric motor 42 ; 43 .
  • the output shafts 39 ; 41 have a common lower pivot axis 44 .
  • the electric motor 42 ; 43 sets the leading edge stops 29 , as illustrated in FIG. 3 , into a periodically repeating small pivoting movement about the lower pivot axis 44 . This is preferably carried out at the cycle rate of the sheet processing machine and ensures exact deposition of sheets on the sheet stack 27 .
  • the pivoting movement is in this case produced, for example, by reversing the direction of rotation of the motor or by means of a gear mechanism, for example including a cam-roller mechanism.
  • the leading edge stops 29 can be pivoted about the upper pivot axis 38 or about the lower pivot axis 44 from a vertical alignment into a horizontal position as desired.
  • the upper pivot axis 38 is preferably arranged at the level of the stack upper edge or above the latter.
  • a movement pivoting the leading edge stops 29 away from the sheet stack 27 upward, as illustrated in FIG. 5 , about the pivot axis 38 thus enables access to the entire sheet stack 27 .
  • Auxiliary stacking devices such as hurdles or rakes can thus be introduced into the stack region at any desired position.
  • a movement pivoting the leading edge stops 29 away from the sheet stack 27 downward, as illustrated in FIG. 4 , about the lower pivot axis 44 enables access to the upper sheet stack region, so that, for example, simple removal of proofs is made possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
US11/057,632 2004-02-13 2005-02-14 Device for aligning sheets deposited on a sheet stack Abandoned US20050189705A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004007067.9 2004-02-13
DE102004007067 2004-02-13

Publications (1)

Publication Number Publication Date
US20050189705A1 true US20050189705A1 (en) 2005-09-01

Family

ID=34813327

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/057,632 Abandoned US20050189705A1 (en) 2004-02-13 2005-02-14 Device for aligning sheets deposited on a sheet stack

Country Status (3)

Country Link
US (1) US20050189705A1 (enExample)
JP (1) JP2005225679A (enExample)
DE (1) DE102005004352A1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046987B4 (de) * 2009-11-23 2023-06-01 Koenig & Bauer Ag Auslage einer bogenverarbeitenden Maschine mit einem Bogen aufnehmenden Auslagestapel und ein Verfahren zum Stapelwechsel
DE102022126263A1 (de) 2022-10-11 2024-04-11 Koenig & Bauer Ag Anschlagvorrichtung für eine Auslage, Verfahren zum Betreiben einer Anschlagvorrichtung und Verwendung eines separaten Aktors eines Vorderanschlages
DE102022126264A1 (de) 2022-10-11 2024-04-11 Koenig & Bauer Ag Anschlagvorrichtung für eine Auslage und Verfahren zum Betreiben einer Anschlagvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416653A (en) * 1981-11-23 1983-11-22 International Business Machines Corporation Apparatus for stacking fan-folded paper
US6648326B2 (en) * 2000-07-28 2003-11-18 Heidelberger Druckmaschinen Ag Delivery for a machine processing flat printing materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416653A (en) * 1981-11-23 1983-11-22 International Business Machines Corporation Apparatus for stacking fan-folded paper
US6648326B2 (en) * 2000-07-28 2003-11-18 Heidelberger Druckmaschinen Ag Delivery for a machine processing flat printing materials

Also Published As

Publication number Publication date
JP2005225679A (ja) 2005-08-25
DE102005004352A1 (de) 2005-09-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HEIDELBERGER DRUCKMASCHINEN AKTIENGESELLSCHAFT, GE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DIEWS, MICHAEL;REEL/FRAME:016398/0009

Effective date: 20050310

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE