US3796427A - Sheet stacking devices for printing machines - Google Patents

Sheet stacking devices for printing machines Download PDF

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Publication number
US3796427A
US3796427A US00183129A US3796427DA US3796427A US 3796427 A US3796427 A US 3796427A US 00183129 A US00183129 A US 00183129A US 3796427D A US3796427D A US 3796427DA US 3796427 A US3796427 A US 3796427A
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US
United States
Prior art keywords
stop member
rear stop
auxiliary
auxiliary table
abutment
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
US00183129A
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English (en)
Inventor
H Reutter
F Sendlinger
H Alix
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.)
Roland Offsetmaschinenfabrik Faber and Schleicher AG
Original Assignee
Roland Offsetmaschinenfabrik Faber and Schleicher 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 Roland Offsetmaschinenfabrik Faber and Schleicher AG filed Critical Roland Offsetmaschinenfabrik Faber and Schleicher AG
Application granted granted Critical
Publication of US3796427A publication Critical patent/US3796427A/en
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
    • 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
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention is concerned with sheet stacking devices for printing machines in which an auxiliary stack table is slid into position above a main stack table, and serves to solve the problem which arises when small format sheets are stacked and rear abutments are brought forward so that they foul the edge of the auxiliary table and prevent its being slid home.
  • the rear abutments are linked so that they can be rocked clear of the auxuliary table under control of a first abutment.
  • the first abutment is pivotally mounted so that it can be moved clear of the table during the table movement.
  • the first abutment pivot is arranged parallel with the advancing edge of the table and is moved clear of the table path by contact with that edge.
  • firstabutment is linked to a lever carrying a roller which engages a cam on the table.
  • first abutment is movable by an electromagnet which is energised by a microswitch actuatable by a cam on the table.
  • the invention relates to a sheet stacking device for printing machines, with an auxiliary stack table which can be slid in above the main stack table, and rear sheet abutments which align the rear ends of the sheets to be stacked.
  • Such sheet stacking devices have the object of depositing in tidy stacks sheets which are freshly printed and transported from the printing machine by endless chain conveyors.
  • the stacking device at least rear sheet abutments are provided by which the sheet stack is aligned.
  • front sheet abutments which are movable in synchronism with the arriving sheets are furthermore provided, by which the sheets are stopped and pushed against the rear sheet abutments.
  • Straight pushing members movably arranged laterally of the stack serve for the lateral alignment of the sheets of the stack.
  • An auxiliary stack table which can he slid in above the main stack table serves for the temporary reception of sheets during the time that the stack is being changed. With the aid of it, a continuous stacking of sheets can be achieved without stopping the machine.
  • Such sheet stacking devices are generally. known. They all have however the following disadvantage: After the'sheets are transported above the stack by means of endless chain conveyors, the grippers holding the front edges of the sheets open at a predetermined place so that the sheets pass directly in front of the front sheet abutments. When changing over to a smaller format, the rear sheet abutments must be correspondingly shifted forward, so that a normally dimensioned auxiliary stack table suitable for the maximum format can no longer be completely slid in place, since it now abuts with its edge against the forwardly shifted sheet abutments. This has the consequence that with the minimum format, the table extends out of the stacking device byabout half a metre and considerably impairs the operation and accessibility of the machine.
  • Sheet stacking devices are known in which the surface of the auxiliary stack table has grooves in which the sheet abutments can extend on sliding in of the table.
  • the smooth stacking surface is lost by this, which is particularly disadvantageous with thin sheet material.
  • the problem underlying the invention is to avoid the disadvantages of the already known sheet depositing devices.
  • This problem is solved in that the rear sheet abutments are movable out of the space required by the slid-in auxiliary stack table and at least a part of the abutments is movableinto, or substantially into,
  • I are arranged at the beginning and end of the carrying rails guiding the'auxiliary stack table. Also, mechanically acting cam controls can be used. In any case, the sliding in procedure is automated.
  • the sheet abutments are rockably mounted and in each case two abutments are coupled by a linkage in such manner that the moving out of the first sheet abutment from the space required by the slid in auxiliary stack table causes the movement of the second abutment until contact with the surface of the auxiliary stack table.
  • This arrangement is especially stable mechanically and moreover is less liable to disturbance.
  • the rocking axis of the first sheet abutment is arranged approximately parallel to the rear edge of the stack table and the rocking axis of the second abutment approximately perpendicularly thereto and parallel to the surface of the stack table. This arrangement is structurally particularly simple.
  • the first sheet abutment is advantageously movable by the auxiliary stack table against the constantly acting force of a spring.
  • FIG. 1 is a side elevation of a sheet depositing device according to the invention
  • FIG. 2 is a plan view of the sheet depositing device shown in FIG. 1;
  • FIG. 3 is a front elevation of an embodiment of the rear sheet abutmentsof a device according to the invention, to an enlarged scale;
  • FIG. 4 is a side elevation of the rear sheet abutments shown in FIG. 3;
  • FIG. 5 is a plan view of the rear sheet abutments shown in FIG. 3; r
  • FIG. 6 is a side elevation, on the line VI-VI in FIG. 7 of the rear sheet abutments with the auxiliary deposit table slid in;
  • FIG. 7 is a front elevation of the rear sheet abutments shown in FIG. 6;
  • FIG, 8 is a front elevation of a further embodiment of rear sheet abutments according to the inventiomon an enlarged scale
  • FIG. 9 is a plan view of the rear sheet abutments shown in FIG. 8.
  • FIG. 10 is a front elevation of magnetically actuated rear sheet abutments.
  • FIG. 11 is a plan view of the rear sheet abutments shown in FIG. 10.
  • FIGS. 1 and 2 show a main stack table 3 which can move upwardly and downwardly, and an auxiliary stack table or delivery table 6 which can be slid in, in U-rails 4, 5.
  • a gripper 7 After opening of a gripper 7 the sheets are braked by a braking device 10 with a plurality of suction nozzle drums 101 arranged in the vicinity of the rear sheet abutments or stops 8, 9 and are aligned by the front sheet abutments or stops 1 l, which are movable in synchronism with the arriving sheets, and the rear abutments 8, 9 on an auxiliary stack 12.
  • the braking device 10 bridges the stacking device, axially parallel to the gripper arm shafts, by a traverse 104 guided in lateral guides 102 and 103 and on which mountings 105 and 106 for the rear abutments are mounted at right angles, and by the shaft 107 for the suction rollers 101, and the shaft 108 for the toothed wheels and 16.
  • the braking device, inclusive of the rear sheet abutments 8, 9 is displaceable in the sheet feed direction, on toothed guide racks 13, 14 (FIG. 2), in order to be able to adapt the positions of the rear sheet abutments 8, 9 to the sheet format.
  • the displacement is effected by rotating the toothed wheels 15, 16 which are connected by the shaft 108, on the toothed guide racks 13, 14.
  • FIGS. 3 to 7 show the position and manner of operation of the rear sheet abutments 8, 9 of one embodiment of the invention, on an enlarged scale.
  • a first abutment 9 is povitally arranged by means of a pin 17 on a lever 18 and is positively connected with the second abutment 8 by a linkage including the members 18, 19, and 22.
  • the lever 18 is fixedly mounted on a pin 19 which is rotatable in a bearing 20 of the traverse 104 of the braking arrangement 10.
  • a further lever 21 is fixed which is connected through a link 22 with the second abutment 8.
  • the second abutment 8 is rotatably arranged on a further bearing 23 on the traverse 104 of the braking arrangement 10, by means of a stud or pin 24.
  • the link 22 is connected with the abutment 8 through a stud 25 and a slot 26.
  • the linkage consisting of the parts 18, 19, 21 and 22 is biased against an abutment 28 by a tension spring 27 (FIG. 4). In this position, the first sheet abutment 9 is disposed in its aligning position. If in accordance with the broken line representation in FIG.
  • the auxiliary stack table 6 is slid into position in the direction of the arrow 29 past the position of the first sheet abutment 9, for the stacking of sheets of small format, then the abutment 9 is swung away against the force of the spring 27 and simultaneously in accordance with FIGS. 6 and 7 the second sheet abutment 8 is lowered onto the auxiliary stack table 6.
  • a two-arm lever or crank 38 is rockably arranged on a further mounting 37 of the traverse 104 of the braking arrangementlO.
  • One arm of the lever 38 is constructed as a roller lever 39, its roller 40 co-operating with a cam member 41 (FIG. 9) arranged on the auxiliary stack table 6.
  • the other arm 42 of the lever 38 is connected by a coupling 43 with a further two-arm lever 44.
  • Lever 44 and sheet abutment 31 are connected with each other via a further coupling member 45.
  • the sheet abutment 31 is biased in the clockwise'direction (as seen in FIG. 8) against an abutment 47 by a spring 46.
  • FIGS. 10 and 11 illustrate sheet abutments 30, 31 likewise connected with each other by a coupling rod 36, and held in contact with the abutment 47 by a spring 46.
  • the displacement of the abutments out of the path of the auxiliary deposit table 6 is here effected by an electromagnet or solenoid 50.
  • the armature of the electromagnet is connected by an intermediate bar 51 with the sheet abutment 31.
  • the electromagnet is energised when a switch 52 comes into contact with a projection 53 provided on the auxiliary deposit table 6.
  • the switch 52 is mounted on a right angle extension 521 of an L-shaped mounting 522 which is provided on the traverse 104 of the braking arrangement in the sheet running direction, and is adjustable in such a manner that even with rapid pushing in of the auxiliary stack table 6, the electromagnet swings the sheet abutments 30 and 31 out of the path, in advance.
  • the additional abutments can be rockably mounted and linked for movement to a first abutment in the same way as the second abutment is I linked for movement in the embodiments described above.
  • a sheet feeding device of a printing press comprising in combination:
  • conveyor means having a portion thereof positioned above said auxiliary table for. delivering sheet thereto guide means for slidably supporting said auxiliary table above and parallel to said main table into any one of several selected positions a movable support means supported by and bridging said frame; said guide means being supported by said movable support means; front stop means secured to and protruding from the auxiliary table for aligning the leading edge of sheets delivered to the auxiliary table;
  • rear stop means including a first rear stop member and a second rear stop member
  • said support means including pivotable means for supporting said rear stop members for alternately pivoting the same into an active position in which one stop member coacts with the trailing edge of sheets delivered to the auxiliary table to effect in conjunction with the front stop means aligning of the delivered sheets while the other stop member is an inactive position clear of the auxiliary table
  • bias means for biasing said pivotable means of said support means toward the pivotable position in which the first rear stop member is in its active position while the second rear stop member is in its inactive position, placement of said table in one selected position freeing the bias means for pivoting the first rear stop member into its active position and placement of said table into another selected position moving said table into engagement with the second rear stop member thereby pivoting the pivotable means of said support means against the action of said bias means into a position in which the second rear stop member is in its active aligning position and the first stop member is in its inactive position.
  • pivotable means comprise a pivot pin for each of said rear stop members and linkage means coupling said stop members for pivotable movement about said pins in one direction by the action of said bias means and for pivotable movement in the opposite direction in response to engagement of the second rear stop member with said auxiliary table.
  • auxiliary table is of substantially rectangular configuration, two of the edges of the table being normal to the direction of displacement of the table, and wherein said front stop means are disposed parallel to said edges and the rear stop means being disposed adjacent to the other of said edges, the axis of the pivot pin for the first rear stop member being substantially parallel to said other edge and the axis of the pin for the second rear stop member being substantially normal to said other edge and substantially parallel to the surface of the auxiliary table.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US00183129A 1970-09-29 1971-09-23 Sheet stacking devices for printing machines Expired - Lifetime US3796427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2047808 1970-09-29

Publications (1)

Publication Number Publication Date
US3796427A true US3796427A (en) 1974-03-12

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ID=5783679

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Application Number Title Priority Date Filing Date
US00183129A Expired - Lifetime US3796427A (en) 1970-09-29 1971-09-23 Sheet stacking devices for printing machines

Country Status (5)

Country Link
US (1) US3796427A (OSRAM)
DE (1) DE2047808B1 (OSRAM)
FR (1) FR2107234A5 (OSRAM)
GB (1) GB1366917A (OSRAM)
SE (1) SE376752B (OSRAM)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881722A (en) * 1973-06-12 1975-05-06 Roland Offsetmaschf Sheet delivery arrangement for printing presses
US4452442A (en) * 1981-03-31 1984-06-05 M.A.N.-Roland Device for registering the rear edges of the sheets in sheet delivery mechanisms for printing machines
US4828246A (en) * 1986-06-03 1989-05-09 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Back-edge stop for sheet stackers of sheet-fed presses
US6394448B2 (en) * 1998-07-31 2002-05-28 Ricoh Company, Ltd. Sheet discharging apparatus and a sheet discharging method
US6510792B1 (en) 1996-09-26 2003-01-28 Heidelberger Druckmaschinen Aktiengesellschaft Device for forming a sheet pile for a sheet fed rotary printing press
US20030218298A1 (en) * 2002-05-23 2003-11-27 Mikihiro Yamakawa Paper stacker for use with image forming apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923475A1 (de) * 1989-07-15 1991-01-24 Koenig & Bauer Ag Bogenausleger fuer druckmaschinen
DE19639495B4 (de) * 1996-09-26 2007-07-12 Heidelberger Druckmaschinen Ag Vorrichtung zur Bildung eines Stapels
DE10354675A1 (de) * 2003-11-22 2005-06-16 Koenig & Bauer Ag Hinterkantenanschlag im Ausleger von bogenverarbeitenden Maschinen
EP1990299A3 (en) * 2004-04-22 2009-06-10 Kba-Giori S.A. Delivery unit for sheet-fed printing or processing machines
DE102006003426A1 (de) * 2006-01-25 2007-07-26 Man Roland Druckmaschinen Ag Anschlageinrichtung
FR3124898B1 (fr) 2021-07-05 2023-05-19 Psa Automobiles Sa Systeme comprenant un cable et un manchon d’etancheite pour ce cable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795420A (en) * 1954-11-03 1957-06-11 Jr George F Rooney Sheet catching and stacking device for a printing press
US2847215A (en) * 1953-12-28 1958-08-12 Roland Offsetmaschf Stacking device for printing machines
US3006635A (en) * 1957-12-13 1961-10-31 Harris Intertype Corp Method and means for feeding sheets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847215A (en) * 1953-12-28 1958-08-12 Roland Offsetmaschf Stacking device for printing machines
US2795420A (en) * 1954-11-03 1957-06-11 Jr George F Rooney Sheet catching and stacking device for a printing press
US3006635A (en) * 1957-12-13 1961-10-31 Harris Intertype Corp Method and means for feeding sheets

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881722A (en) * 1973-06-12 1975-05-06 Roland Offsetmaschf Sheet delivery arrangement for printing presses
US4452442A (en) * 1981-03-31 1984-06-05 M.A.N.-Roland Device for registering the rear edges of the sheets in sheet delivery mechanisms for printing machines
US4828246A (en) * 1986-06-03 1989-05-09 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Back-edge stop for sheet stackers of sheet-fed presses
US6510792B1 (en) 1996-09-26 2003-01-28 Heidelberger Druckmaschinen Aktiengesellschaft Device for forming a sheet pile for a sheet fed rotary printing press
US6394448B2 (en) * 1998-07-31 2002-05-28 Ricoh Company, Ltd. Sheet discharging apparatus and a sheet discharging method
US20030218298A1 (en) * 2002-05-23 2003-11-27 Mikihiro Yamakawa Paper stacker for use with image forming apparatus
US6991229B2 (en) * 2002-05-23 2006-01-31 Konica Corporation Paper stacker for use with image forming apparatus

Also Published As

Publication number Publication date
DE2047808B1 (de) 1971-08-26
SE376752B (OSRAM) 1975-06-09
FR2107234A5 (OSRAM) 1972-05-05
GB1366917A (en) 1974-09-18

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