EP1266854B1 - Dispositif de transport de feuilles et méthode pour assembler des feuilles - Google Patents

Dispositif de transport de feuilles et méthode pour assembler des feuilles Download PDF

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Publication number
EP1266854B1
EP1266854B1 EP02008873A EP02008873A EP1266854B1 EP 1266854 B1 EP1266854 B1 EP 1266854B1 EP 02008873 A EP02008873 A EP 02008873A EP 02008873 A EP02008873 A EP 02008873A EP 1266854 B1 EP1266854 B1 EP 1266854B1
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EP
European Patent Office
Prior art keywords
sheets
quires
suction
conveying
conveying apparatus
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
EP02008873A
Other languages
German (de)
English (en)
Other versions
EP1266854A2 (fr
EP1266854B9 (fr
EP1266854A3 (fr
Inventor
Günther Hagemann
Frank Herpel
Jürgen Peter
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.)
ECH Will GmbH and Co
Original Assignee
ECH Will GmbH and Co
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
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Publication of EP1266854A2 publication Critical patent/EP1266854A2/fr
Publication of EP1266854A3 publication Critical patent/EP1266854A3/fr
Publication of EP1266854B1 publication Critical patent/EP1266854B1/fr
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Publication of EP1266854B9 publication Critical patent/EP1266854B9/fr
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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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/513—Modifying electric properties
    • B65H2301/5132—Bringing electrostatic charge
    • 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
    • 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

Definitions

  • the invention relates to a conveyor for sheet layers, which in particular at least one collecting area can be fed, with at least two successively arranged conveying devices, of which the forward conveying device in the conveying direction has a lower speed than the rear, wherein at least one ionizer is included, by means of which the sheet layers electrostatically are rechargeable.
  • the invention further relates to a method for bringing sheet layers together.
  • a generic conveyor or conveyor in which in particular by means of an ionizing the sheet and at least one of the conveyor belts is electrostatically charged, so as to allow an electrostatic braking of the bow.
  • DE-AS 1 245 702 discloses a device for conveying, overlapping and depositing, for example, sheets of paper or the like ejected from cross-cutters with a conveyor belt and a further conveyor belt of lower speed connected downstream of it and arranged lower in the conveying direction. In this case, individual sheets are tightened on a slowly moving belt, the so-called. Abbremsband by suction. A device acc. This document is not suitable for several superimposed sheets, so-called sheet layers or paper clips.
  • the at least one region of the sheet layers is arranged in the conveying direction in the rear region of the sheet layers, in particular in the vicinity of the edge of the respective sheet layer, it is possible long format sections or long sheet layers at a slower speed in the slow conveyor, ie the front conveyor to transport, as this has been possible. Furthermore, this means a non-contact braking of the sheet layers at the trailing edge, whereby no damage to the leading edge takes place even at high paper web speeds or sheet speeds.
  • the long format sections or sheet layers are no longer pushed together in the braking phase, as this happens in the otherwise conventional inertia of sheet layers when braking at the front edge.
  • the front conveyor device comprises suction openings.
  • suction openings By providing suction openings in the front conveyor, in particular in corresponding conveyor belts, a particularly simple constructive and inventive design of the front conveyor possible.
  • the suction openings pass through at least one conveyor belt of the front conveyor.
  • the at least one conveyor belt can then be called, for example, also suction belt.
  • a plurality of juxtaposed conveyor belts or suction belts are preferably used. These are preferably three.
  • the suction device comprises at least one suction box with suction slots, which can be brought into operative connection with the suction openings. If the suction openings are arranged at a predeterminable, in particular uniform, distance from one another on the at least one conveyor belt, a format-independent overlapping distance can be selected. The overlap distance is accordingly preferably adaptable and depends on the hole spacing of the corresponding suction holes in the at least one conveyor belt.
  • a particularly effective ionization or electrical charging of the sheet layers can be realized if the conveying device or at least one further element is at least partially electrically conductive in the region of the ionizing device.
  • an electrically conductive element is preferably provided, which is in particular stationary.
  • a particularly preferred embodiment of the conveyor device according to the invention is realized when a phase shift as a function of the speed of the conveyor between the at least two is provided behind one another arranged conveying devices.
  • the phase shift serves to compensate for the inertia of the sheet layers to higher speeds of the conveyor.
  • the higher the speed of the sheet layers the sheet layers to slip over the corresponding suction holes, before a complete fixation is done by the suction air to the corresponding conveyor belt.
  • there is a linear relationship between the phase shift and the speed of the conveyor is preferably, the greater the speed of the conveyor, the more the phase of the front conveyor of the phase of the rear conveyor.
  • a paper processing machine is provided with at least one of the aforementioned conveyors.
  • Such a paper processing machine processes in particular paper, but also so-called. Tissue.
  • Such a paper processing machine serves, in particular, to cut, stack and package paper as well as tissue.
  • the object is further achieved by a method for bringing together sheet layers with the method steps of claim 12.
  • the inventive method steps it is possible to bring together without slipping the sheet in the sheet layers, in particular on a slower conveyor belt or Abbremsband and in particular to overlap, with a very fast process control and a very gentle process management is possible. Furthermore, it is possible to set the difference in speeds between the supplied sheet layers and the overlapping sheet layers significantly higher, so that a slower striking the overlapping sheet layers on the front stop a collection box a corresponding paper processing machine is possible, making this attack is also gentle. As a result of the slow impact on the front stop, the sheet layers brought to overlap are thus gently accumulated, preferably subsequently to the abovementioned method steps, to form a sheet stack.
  • Fig. 1 shows a side view of the essential part of a conveyor according to the invention.
  • Paper clips 33 are between a top belt 20 and a conveyor belt 23 in the conveying direction 10 in the direction a Abbremsbandes 24 transported.
  • the upper belt 20 is deflected by means of deflection rollers 21 and by means of a drive roller or a drive unit, which is not shown in Fig. 1, driven. Accordingly, the conveyor belt 23 is deflected via deflection rollers 21 and driven by a drive roller 22. The same applies to the Abbremsband 24 and the lower band 25th
  • the paper clips consisting of some paper sheets, such as 4 to 7 sheets, are electrically charged by means of an ionizer 30 provided with an electrical connection 31 and the electrostatic field 32 produced thereby, so that the paper sheets are held together in the respective paper clip 33 ,
  • a counter electrode 27 is preferably provided, which is preferably electrically conductive.
  • a corresponding ionizer which may be, for example, an electrically conductive rod, which may be connected to a van der Graf generator or other commercially available high voltage source, is known, for example from DE-PS 2,100,980.
  • a suction box 34 is provided in this embodiment, which is shown broken in Fig. 1.
  • FIG. 2 shows a detail of FIG. 1 in more detail.
  • the suction slot 36 of the suction box 34 is shown more clearly in this figure.
  • Fig. 3 is a plan view of a portion of the conveyor of FIG. 1 is shown schematically. It is a machine frame 40 and a carrier 41 is shown, wherein above the carrier 41 are each three suction boxes side by side each side by side led stream of paper clips 33 are provided. In particular, the suction slots 36 and the suction holes 37 are shown.
  • a lower paper clip 38 is shown by 38 and a line from bottom left to top right and only schematically on the right side of the two Pandaclipströme.
  • an upper paper clip 33 is shown, which is lined from top left to bottom right. This ruling has been made for the sake of clarity. It can be seen that the suction holes 37 located at the top in FIG.
  • suction holes 37 lie in the region of the suction slots 36, that is to say that suction air acts on the paper clip 33 lying on top.
  • the bottom in Fig. 3rd shown suction holes 37 are outside the range of the suction slots 36, so that no more suction occurs through this.
  • the lower paper clip 38 is no longer held by suction, but only by the weight itself.
  • the Abbremsb section 24 and brake belts are indicated in Fig. 3 only. These are extended further upwards and downwards in FIG. 3 as well as in FIG. 4 to introduce, whereby suction holes 37 are provided correspondingly at preferably equidistant intervals.
  • FIG. 4 a detail of Fig. 3 is shown in detail.
  • the thin lines drawn in Fig. 4 are under objects that are above them.
  • a lower paper clip 38 and an upper paper clip 33 are shown, wherein the upper paper clip 33 has been interrupted in the lower region of FIG.
  • both the Abbremsb section 24 and the suction boxes 34 are below the paper clips 33 and 38.
  • the suction box 34 with the suction slots 36 is further below the Abbremsb selected 24 with the suction holes 37 located in these.
  • a paper clip 33 is electrostatically charged by means of the ionizer 30 and optionally the counter electrode 27, so that the paper clips or the sheets are held together in the paper clip.
  • the paper clips 33 are brought to overlap, being transported in the rear region of the just in the overlap area Paper clip 33 suction air is applied. This happens in that at the moment where the rear portion of the clip 33 enters the overlap region, the corresponding suction holes 37 of the Abbremsb suitable 24 are brought into the effective range of the suction box 34, ie above the respective suction slots 36.
  • the paper clip 33 is held by the suction air as long as the suction holes 37, which are in engagement with the suction slot 36, are still in engagement therewith. Once they are outside the range of the suction slots, no suction air is passed through the suction openings, so that the tightening of the paper clips 33 is terminated by means of the suction air.
  • the paper clips In the further course of conveying the paper clips they are pushed together in a front stop, which is not shown in the figures, and indeed to stacks of paper.
  • FIG. 5 shows a diagram in which two functions of the phase shift 50 are shown as a function of the machine speed 51.
  • a linear function is shown and with 53 another function, for example, at low machine speeds an exponential or quadratic Rise is provided and to higher machine speeds a linear course.
  • the size of the suction openings, the size of the paper clips, the size of the vertical distance for example.
  • the roughness of the paper and / or the suction power for example, the suction boxes or the number the suction boxes, different functional characteristics can be advantageous.
  • the further curve 53 may be preferred.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Claims (15)

  1. Dispositif de transport pour des couches de feuilles (33), comportant au moins deux transporteurs (23, 24) disposés l'un à la suite de l'autre, dont le transporteur avant (24), dans le sens du transport, présente une vitesse plus basse que le transporteur arrière, au moins un dispositif d'ionisation (30, 31), au moyen duquel les couches de feuilles (33) peuvent être chargées d'électricité statique, étant présent, caractérisé en ce que dans la région du transporteur avant (24) est disposé un dispositif d'aspiration (34), au moyen duquel les couches de feuilles (33) peuvent être sollicitées par de l'air d'aspiration (35) dans au moins une zone arrière des couches de feuilles (33), étant précisé que sous l'effet de l'ionisation des couches de feuilles (33), les feuilles de la couche de feuilles chaque fois considérée sont maintenues ensemble par l'électricité statique, de telle façon que les couches de feuilles (33) ne soient pas, dans la phase de freinage, poussées l'une dans l'autre.
  2. Dispositif de transport selon la revendication 1, caractérisé en ce que la au moins une zone des couches de feuilles (33) est située dans la partie arrière, suivant le sens du transport, des couches de feuilles (33).
  3. Dispositif de transport selon la revendication 1 et/ou 2, caractérisé en ce que le transporteur avant (24) comprend des orifices d'aspiration (37).
  4. Dispositif de transport selon la revendication 3, caractérisé en ce que les orifices d'aspiration (37) traversent au moins une bande transporteuse (24) du transporteur avant (24).
  5. Dispositif de transport selon la revendication 3 et/ou 4, caractérisé en ce que le dispositif d'aspiration (34) comprend au moins un caisson aspirant (34) muni de fentes d'aspiration (36), qui peut être mis en liaison active avec les orifices d'aspiration (37).
  6. Dispositif de transport selon la revendication 4 et/ou 5, caractérisé en ce que les orifices d'aspiration (37) sont disposés les uns par rapport aux autres suivant un espacement prédéfinissable, en particulier uniforme, sur la au moins une bande transporteuse (34).
  7. Dispositif de transport selon une ou plusieurs des revendications 1 à 6, caractérisé en ce que dans la région du dispositif d'ionisation (30, 31), le transporteur (23) ou au moins un autre élément (27) est partiellement conducteur de l'électricité.
  8. Dispositif de transport selon une ou plusieurs des revendications 1 à 7, caractérisé en ce qu'il est prévu, entre les au moins deux transporteurs (23, 24) disposés l'un à la suite de l'autre, un décalage de phase (50) fonction de la vitesse du dispositif de transport.
  9. Dispositif de transport selon la revendication 8, caractérisé en ce qu'il existe une relation linéaire entre le décalage de phase (50) et la vitesse (51) du dispositif de transport.
  10. Dispositif de transport selon la revendication 8 et/ou 9, caractérisé en ce que la phase du transporteur avant (24) est d'autant plus en avance sur la phase du transporteur arrière (23), que la vitesse (51) du dispositif de transport est plus grande.
  11. Machine de transformation du papier comportant au moins un dispositif de transport selon une ou plusieurs des revendications 1 à 10.
  12. Procédé pour regrouper des couches de feuilles (33), présentant les étapes de procédé suivantes:
    - application d'une charge électrostatique sur les couches de feuilles (33), afin que les feuilles des couches de feuilles (33) respectives soient maintenues ensemble par l'électricité statique, de telle façon que les couches de feuilles (33) ne soient pas, dans la phase de freinage, poussées l'une dans l'autre,
    - transport des couches de feuilles (33), chargées, jusque dans une région de chevauchement (26), dans laquelle des couches de feuilles (33) disposées l'une à la suite de l'autre dans le sens du transport soient mises en chevauchement, et
    - sollicitation par de l'air d'aspiration (35), des couches de feuilles (33) devant être mises en chevauchement, à l'extrémité arrière, dans le sens du transport, des couches de feuilles, afin d'amener ces dernières à une vitesse qui correspond sensiblement à celle à laquelle les couches de feuilles (33), déjà mises en chevauchement, sont transportées.
  13. Procédé selon la revendication 12, caractérisé en ce que les couches de feuilles (33), mises en chevauchement, sont ensuite rassemblées en une pile de feuilles.
  14. Procédé selon la revendication 12 et/ou 13, caractérisé en ce que la sollicitation par de l'air d'aspiration (35) se fait, par rapport à l'instant du transport des couches de feuilles (33) dans la région de chevauchement (26), avec un décalage de phase (50) qui est fonction de la vitesse (51) du transport. '
  15. Procédé selon la revendication 14, caractérisé en ce que le décalage de phase (50) est tel que la sollicitation par de l'air d'aspiration (35) se fait d'autant plus tôt, que le transport des couches de feuilles (33) est plus rapide.
EP02008873A 2001-06-15 2002-04-20 Dispositif de transport de feuilles et méthode pour assembler des feuilles Expired - Lifetime EP1266854B9 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10128653 2001-06-15
DE10128653A DE10128653A1 (de) 2001-06-15 2001-06-15 Fördereinrichtung für Bogenlagen und Verfahren zum Zusammenbringen von Bogenlagen

Publications (4)

Publication Number Publication Date
EP1266854A2 EP1266854A2 (fr) 2002-12-18
EP1266854A3 EP1266854A3 (fr) 2003-11-19
EP1266854B1 true EP1266854B1 (fr) 2007-01-17
EP1266854B9 EP1266854B9 (fr) 2007-06-06

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EP02008873A Expired - Lifetime EP1266854B9 (fr) 2001-06-15 2002-04-20 Dispositif de transport de feuilles et méthode pour assembler des feuilles

Country Status (8)

Country Link
US (2) US7059598B2 (fr)
EP (1) EP1266854B9 (fr)
JP (1) JP4150215B2 (fr)
CN (1) CN1330550C (fr)
CA (1) CA2388262C (fr)
DE (2) DE10128653A1 (fr)
ES (1) ES2277969T3 (fr)
PT (1) PT1266854E (fr)

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EP2128063A2 (fr) 2008-05-28 2009-12-02 E.C.H. WILL GmbH Dispositif de transport pour feuilles et procédé de formation et de transport d'un flux de feuilles se chevauchant

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2128063A2 (fr) 2008-05-28 2009-12-02 E.C.H. WILL GmbH Dispositif de transport pour feuilles et procédé de formation et de transport d'un flux de feuilles se chevauchant
DE102008025667A1 (de) 2008-05-28 2009-12-10 E.C.H. Will Gmbh Fördereinrichtung für Bogenlagen und Verfahren zum Bilden und Fördern eines Schuppenstroms aus Bogenlagen

Also Published As

Publication number Publication date
CN1330550C (zh) 2007-08-08
PT1266854E (pt) 2007-04-30
CN1392093A (zh) 2003-01-22
EP1266854A2 (fr) 2002-12-18
US7059598B2 (en) 2006-06-13
CA2388262C (fr) 2010-02-02
ES2277969T3 (es) 2007-08-01
US20050029733A1 (en) 2005-02-10
DE10128653A1 (de) 2002-12-19
EP1266854B9 (fr) 2007-06-06
US20020190461A1 (en) 2002-12-19
JP4150215B2 (ja) 2008-09-17
EP1266854A3 (fr) 2003-11-19
JP2003034452A (ja) 2003-02-07
US6945529B2 (en) 2005-09-20
CA2388262A1 (fr) 2002-12-15
DE50209264D1 (de) 2007-03-08

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