EP0452708A1 - Dispositif pour séparer des feuilles - Google Patents

Dispositif pour séparer des feuilles Download PDF

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Publication number
EP0452708A1
EP0452708A1 EP91104688A EP91104688A EP0452708A1 EP 0452708 A1 EP0452708 A1 EP 0452708A1 EP 91104688 A EP91104688 A EP 91104688A EP 91104688 A EP91104688 A EP 91104688A EP 0452708 A1 EP0452708 A1 EP 0452708A1
Authority
EP
European Patent Office
Prior art keywords
gap
transport
sheet
transfer
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.)
Granted
Application number
EP91104688A
Other languages
German (de)
English (en)
Other versions
EP0452708B1 (fr
Inventor
Jörg Rohrbach
Werner Reim
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.)
MBO Postpress Solutions GmbH
Original Assignee
Maschinenbau Oppenweiler Binder GmbH and Co KG
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 Maschinenbau Oppenweiler Binder GmbH and Co KG filed Critical Maschinenbau Oppenweiler Binder GmbH and Co KG
Publication of EP0452708A1 publication Critical patent/EP0452708A1/fr
Application granted granted Critical
Publication of EP0452708B1 publication Critical patent/EP0452708B1/fr
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
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/12—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/14—Buckling folders
    • B65H45/142—Pocket-type folders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B65H2511/524—Multiple articles, e.g. double feed

Definitions

  • the invention relates to a sheet separating device, in particular for separating double or mold sheets between a sheet feeder with an alignment table and a folding machine, with two transport rollers arranged parallel to one another and rotating in opposite directions for conveying sheets between a transport surface arranged in front of the transport rollers in the conveying direction and one in Direction of conveyance after the transfer rollers arranged transfer surface, and with a multiple sheet sensor arranged in the area of the transport surface to control the number of sheets transported on the transport surface.
  • Sheet separation devices in folding machines are known in which the sensor detects when two or more sheets lying one above the other or sheets carried along by a sheet get from the sheet feeder onto the transport surface of the alignment table. In order to prevent several sheets from being simultaneously fed onto the transfer surface of the folder before the parallel break, the sensor then emits a signal, on the basis of which sheet transport is stopped and the undesired sheets are manually removed by an operator. These downtimes, however, significantly reduce the performance of the folding machine. This applies in particular if the sheets are glued to one another or clipped to the cut edges or if the sheet feeder does not adequately separate the sheets.
  • the double sheet determined by a sensor is removed by pressing a sheet switch controlled by the sensor into the path of the lower sheet for deflecting it and then pulling it back out of the sheet conveying plane by a return spring.
  • the known arrangement requires a relatively large amount of space in the direction of sheet travel.
  • the invention is therefore based on the object of using structurally simple means to create a reliably working sheet separation device with which sheets lying one above the other or carried along can be automatically eliminated without stopping the sheet transport.
  • a gap is provided between the transfer surface and the lower of the two transport rollers, that at least the lower transport roller consists of a plurality of axially spaced disc-shaped roller elements that transfer elements are arranged between adjacent roller elements of the lower transport roller between a transfer position, in which they cover the gap, and a separating position, in which they release the gap, that a deflector is provided which is movable between a rest position above the transfer surface and a separating position, in which it is partially in the gap intervenes, and that the transfer elements and the deflector are coupled to the multiple sheet sensor such that they can be moved simultaneously from their transfer or rest position to their discharge position or vice versa in response to signals from the multiple sheet sensor.
  • a discharge roller is expediently arranged below the nip coaxially to the lower transport roller and in the opposite direction to this, in order to remove sheets which have been discharged through the nip in cooperation with the lower transport roller.
  • the upper transport roller advantageously consists of a plurality of roller elements arranged axially at a distance from one another, and guide elements for guiding the sheets are arranged between adjacent roller elements of the upper transport roller.
  • the separated sheets can be collected in a collection container below the gap. Since they are undamaged and not dirty, they can be reused.
  • the control of the device can be simplified in that the deflector and the transfer elements are kinematically connected to one another.
  • the immersion depth of the lower edge of its concave deflecting surface in the gap in the deflector is dimensioned such that the lower edge presses on the leading sheet without impairing its transport onto the transfer surface and without damaging it, but the leading edge of the underlap following Arc is deflected sufficiently far into the gap that it is guided from the concave end face of the transfer table to the separation roller.
  • the folding machine 1 shown in FIG. 1 has, from right to left, a sheet feeder 6, an alignment table 4 with a transport surface 18, a sheet separation device 10 and a folding unit 2 with a parallel fold 3.
  • a transfer table 21 with a transfer surface 20 is arranged between the parallel break 3 and the sheet separation device 10.
  • the transfer surface 20 and the transport surface 18 are arranged horizontally and essentially in the same plane.
  • a multiple sheet sensor 22 is arranged on the side, which is designed so that it detects when sheets 16 either lying one above the other or overlapping from the sheet feeder 6 to the transport surface 18 of the alignment table 4, and then a signal passes on.
  • the sheet separating device 10 has two parallel transport rollers 12 and 14 arranged vertically at a short distance above one another, which rotate in the opposite direction in the direction of the transfer table 21.
  • the space between the two transport rollers 12 and 14 is in the transport plane of the transport surface 18.
  • a gap 24 is provided between the lower transport roller 12 and the transfer table 21, which is delimited on the one hand by an end face 23 of the transfer table 21 concave to the transfer roller 12 and on the other hand by the outer surface of the transfer roller 12.
  • the transport rollers 12 and 14 each consist of axially spaced, disc-shaped roller elements 13 and 15, respectively, which are connected to one another in a rotationally fixed manner.
  • Transfer elements 28 are arranged between the adjacent roller elements 13 of the lower transport roller 12 and can be moved by a drive (not shown) between a transfer position shown in FIG. 2 and a discharge position shown in FIG. 3.
  • the transfer position the end section 29 of the transfer elements 28 facing the transfer surface 20 covers the gap 24 between the lower transport roller 12 and the transfer table 21.
  • the transfer elements 28 are retracted in the direction of the transport surface 18 to such an extent that they completely release the gap 24.
  • guide elements 38 are provided with an end section 39 parallel to the transport plane and facing the transfer table 21.
  • the end section 39 is located just above the transport plane and extends beyond the outer surface of the roller elements 15.
  • deflector 30 with a deflection surface 31 concave to the lower transport roller 12.
  • the deflector 30 is kinematically connected to the drive of the transfer elements 28 and between the rest position shown in FIG. 2 and that shown in FIG. 3
  • Elimination position movable.
  • the lower end of its concave deflecting surface 31 is somewhat immersed in the gap 24 between the transfer table 21 and the lower transport roller 12.
  • the entire deflector 30 is at a distance from the transfer surface 20.
  • the deflector 30 is kinematically connected to the drive of the transfer elements 28 in such a way that, upon a signal from the multiple sensor 22, it is moved simultaneously with the transfer elements 28 into the withdrawal position and back.
  • a separation roller 32 is mounted parallel and at a short distance from the lower transport roller 12, which rotates in a direction opposite to the direction of rotation of the transport roller 12.
  • the space between the separating roller 32 and the lower transport roller 12 is located on the imaginary extension of the concave end face 23 and is dimensioned such that a sheet conveyed through the gap 24 is gripped by the lower transport roller 12 and the separating roller 32 and down into a collecting container 36 can be promoted.
  • a sheet 16 is normally separated by the sheet feeder 6 and reaches the transport surface 18 of the alignment table 4.
  • the sheet 16 is aligned on the transport surface 18 and conveyed between the transport rollers 12 and 14 of the sheet separation device 10, which is shown in FIG 2 shown sheet transport state, in which the end section 29 of the transfer elements 28 facing the transfer table 21 covers the gap 24 at the top and the deflector 30 is at a distance above the transfer surface 20.
  • the sheet is gripped by the transport rollers 12 and 14 and transported by the latter via the end section 29 of the transfer elements 28 onto the transfer surface 20 of the transfer table 21. From the transfer table 21, the sheet 16 then reaches the parallel fold 3 of the folding unit 2 in a known manner.
  • the guide elements 38 prevent unstable, rounded or statically charged sheets from sticking to the upper transport roller 14 and being able to get between them and the deflector 30. In the same way is prevented by the transfer elements 28 changes that an arc can accidentally get into the gap 24.
  • the multiple sheet sensor 22 detects this and sends a corresponding signal to the drive of the transfer elements 28 and the deflector 30. Thereupon the deflector 30 and the transfer elements 28 are each moved into their separation position, which is shown in FIG. 3.
  • the switching time is selected so that the deflector 30 and the transfer elements 28 assume their excretion position precisely when an area with sheet sections arranged one above the other reaches the sheet discharge device 10.
  • the subsequent arc 16b is deflected into the gap 24 by the section of the preceding arc 16a located immediately in front of the deflector 30, since the latter is slightly curved downwards in the direction of the gap by the deflector 30.
  • the deflected sheet 16b is then gripped by the separating roller 32 and the lower transport roller 12 and conveyed further into the collecting container 36.
  • the deflector 30 and the transfer elements 28 are then moved back to their rest position or transfer position after a predetermined time by their drive on the basis of a signal from the multiple sensor 22.
  • the predetermined time is selected depending on the transport speed and the length of the sheet so that the deflector 30 and the transfer elements 28 are moved back as soon as the trailing edge of the overlying sheets or the overlapped sheet 16b is in the gap 24.
  • the sheets deposited in the collecting container 36 can be removed by an operator and arranged again on the sheet feeder 6.

Landscapes

  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP91104688A 1990-04-19 1991-03-25 Dispositif pour séparer des feuilles Expired - Lifetime EP0452708B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9004480U DE9004480U1 (de) 1990-04-19 1990-04-19 Bogenausscheidevorrichtung
DE9004480U 1990-04-19

Publications (2)

Publication Number Publication Date
EP0452708A1 true EP0452708A1 (fr) 1991-10-23
EP0452708B1 EP0452708B1 (fr) 1994-07-06

Family

ID=6853047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104688A Expired - Lifetime EP0452708B1 (fr) 1990-04-19 1991-03-25 Dispositif pour séparer des feuilles

Country Status (2)

Country Link
EP (1) EP0452708B1 (fr)
DE (2) DE9004480U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757163A1 (de) * 1997-12-20 1999-06-24 Heidelberger Druckmasch Ag Bogendruckmaschine mit Nachverarbeitungseinheit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288048A1 (fr) * 1974-10-18 1976-05-14 Cit Alcatel Distributeur de feuilles en liasses
DE2724387A1 (de) * 1977-05-28 1978-12-07 Oppenweiler Gmbh Maschinenbau Bogenanleger fuer falzmaschinen
GB2059927A (en) * 1977-07-15 1981-04-29 Diebold Inc Currency dispensers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088070B (de) * 1959-01-16 1960-09-01 Mabeg Maschb G M B H Vorrichtung zum Aussondern von Doppel-Bogen beim Zufuehren von Bogen zu bogenverarbeitenden Maschinen
DE1223682B (de) * 1962-03-01 1966-08-25 Masson Scott & Co Ltd Vorrichtung zum Aussortieren von Bogen aus Papier, Pappe od. dgl.
JPS6117966Y2 (fr) * 1980-12-05 1986-05-31

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288048A1 (fr) * 1974-10-18 1976-05-14 Cit Alcatel Distributeur de feuilles en liasses
DE2724387A1 (de) * 1977-05-28 1978-12-07 Oppenweiler Gmbh Maschinenbau Bogenanleger fuer falzmaschinen
GB2059927A (en) * 1977-07-15 1981-04-29 Diebold Inc Currency dispensers

Also Published As

Publication number Publication date
DE59102093D1 (de) 1994-08-11
DE9004480U1 (de) 1990-07-05
EP0452708B1 (fr) 1994-07-06

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