EP1554059A1 - Dispositif d'alimentation precise d'elements de tri plats a un dispositif d'entree destine a un convoyeur de tri - Google Patents

Dispositif d'alimentation precise d'elements de tri plats a un dispositif d'entree destine a un convoyeur de tri

Info

Publication number
EP1554059A1
EP1554059A1 EP03738111A EP03738111A EP1554059A1 EP 1554059 A1 EP1554059 A1 EP 1554059A1 EP 03738111 A EP03738111 A EP 03738111A EP 03738111 A EP03738111 A EP 03738111A EP 1554059 A1 EP1554059 A1 EP 1554059A1
Authority
EP
European Patent Office
Prior art keywords
sorting
conveyor
rollers
sorting piece
sorted
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
EP03738111A
Other languages
German (de)
English (en)
Other versions
EP1554059B1 (fr
Inventor
Beat Fritsche
Thomas Zimmermann
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.)
Siemens Schweiz AG
Original Assignee
Siemens Schweiz 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 Siemens Schweiz AG filed Critical Siemens Schweiz AG
Priority to EP03738111A priority Critical patent/EP1554059B1/fr
Publication of EP1554059A1 publication Critical patent/EP1554059A1/fr
Application granted granted Critical
Publication of EP1554059B1 publication Critical patent/EP1554059B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C1/00—Measures preceding sorting according to destination
    • B07C1/02—Forming articles into a stream; Arranging articles in a stream, e.g. spacing, orientating
    • B07C1/04—Forming a stream from a bulk; Controlling the stream, e.g. spacing the articles

Definitions

  • the invention relates to a device for accurately feeding flat sorting pieces to an input device for a sorting conveyor.
  • Such a device is usually used in a sorting conveyor for post automation, such as is described for example in European patent application EP 827 786 AI.
  • This sorting conveyor usually has so-called bullet devices, which shoot the flat sorting pieces into pockets of a rotating conveyor. The flat sorting pieces are emptied out of these pockets at the physical target locations assigned to them and can subsequently be brought to their destination.
  • the invention is therefore based on the object of specifying a device for accurately feeding flat sorting pieces to an input device for a sorting conveyor, which makes it possible, in particular, to also address the above-mentioned particularly problematic ones
  • this object is achieved in that a withdrawal unit which periodically separates the flat sorting pieces has the flat sorting pieces in a separated form feeds onto a conveyor line and a feed unit transfers the separated sorting items after these sorting items have reached a predetermined conveying location of the conveyor line with a defined feed of the input device.
  • the sorting pieces which have a preferred edge, can be deposited in stacks in the withdrawal unit and can be transferred to the conveyor line with the preferred edge lying foremost.
  • the extraction unit comprises a drum-like, rotatable unit which has suction cups and a transport securing element, with the suction cups providing an attack on a sorting piece closest to the drum and then with the transport securing element an edge, in particular the preferred edge, of the sorting piece engaged with the suction cups can be brought into engagement.
  • the suction cups can suck in a sorting piece located at the bottom of the stack near the edge and, due to the circular path of the drum, from the sorting pieces above separate.
  • the transport securing element controlled by the circular movement for example a lever pressing the sorting piece with the edge against a counter bearing, engages the sorting piece, which is now pulled out of the stack and conveyed into a suitable position on the circular path.
  • the vacuum of the suction cups can be reduced again and the transport securing element can be removed from the edge for depositing the sorting piece on the conveyor line after a predeterminable rotation angle line.
  • the sorting piece is so freely conveyable on the conveyor line, which does not necessarily mean that the sorting piece is placed in a horizontal position, since the circular movement of the drum-like unit also allows other layers.
  • the predetermined conveying location can be determined by a light barrier assigned to the conveying path and / or by one of the
  • Contact sensor assigned to the conveying path can be represented.
  • the specified funding location can be represented at the same time or alternatively also by the end of the conveyor line.
  • a mechanically particularly reliably operable and simply constructed feed unit is obtained if the feed unit comprises a telescopic unit with a movable carriage, the carriage moves out of the predetermined conveying location when the sorting piece is reached, and the defined feed corresponds to the predetermined extension path.
  • the extension and the subsequent retraction can be activated by an electric motor, but for example pneumatically. According to the control of these activation elements, the extension path can therefore be changed within appropriate limits, so that the extension path can be quite shorter than the length of the pull-out means available, e.g. a pull-out rail.
  • the slide of the telescopic unit is adjusted so that it has returned to its rest position before the sorting piece just ejected following sorting piece has reached the specified funding location. It should be noted here that the next sorting piece can already be transported to the predetermined conveying location over the retracting slide of the telescopic unit. The only important thing is that the sled has returned to its rest position at least at the time when that
  • Sorting piece has reached the predetermined conveying point and thus the takeover of the sorting piece on the slide is imminent.
  • the slide of the telescopic unit can have a revolving conveyor belt that is not driven during the extension movement and driven during the insertion movement. It is thus possible that the position of the sorting piece relative to the slide remains unchanged during the pushing-out movement and that during the pushing-in movement the depositing / transferring of the sorting piece onto / to the input device is supported by a suitable drive of the conveyor belt.
  • Sorting piece from the carriage on / to the input device is the backward insertion movement of the carriage.
  • This backward insertion movement is relatively equalized for the sorting piece if a drive element for the conveyor belt of the slide is coupled to the movement of the slide, with a free-wheel being provided for the extension movement and for the extension movement.
  • the speed of the conveyor belt is at least largely adjusted in terms of amount to the speed of the insertion movement, but has an opposite sign.
  • telescope unit which comprises at least one system of two pairs of rollers coupled via a closed belt, which has the following properties: a) the relative position of the two rollers within one Pair of roles to each other is fixed; b) one pair of rollers is arranged in a fixed position and the other pair of rollers is fastened to the slide which performs the extension and insertion movement; c) each pair of rollers includes at least one roller equipped with a freewheel, so that cl) when the slide extends, the tape rolls only over the rollers of the stationary roller pair, and c2) when the slide is inserted, the tape only rolls over the rollers attached to the slide.
  • both the conveyor line at least in the rest position of the slide of the telescopic unit and the slide, can comprise strip-shaped, spaced-apart conveyor belts, the strip-shaped conveyor belts of the conveyor line and the telescopic pull-out are arranged alternately. In this way, a kind of transfer zone is created, which is (final) part of the conveyor line and the carriage.
  • the level of the strip-shaped belts of the carriage which serves as a support for the sorting piece, can be arranged slightly lower than the level of the strip-shaped belts of the conveyor line in which the Sorting piece is promoted. Only when the slide is ejected and the sorting piece is transported further beyond the end of the conveyor line does the slide take over
  • Sorting piece sliding This transfer can be significantly supported by the fact that the band or bands of the slide have an adhesive surface. Additionally or alternatively, the sorting pieces can also be held on the slide in a suitable manner, although not strictly speaking. For this purpose, the sorting pieces can be brought into engagement with a roller-mounted spring element until the predetermined conveying location is reached, which spring element (lightly) presses the sorting piece onto the belt or strips. Another feature that supports the transfer from the conveyor line to the slide can be achieved if the slide of the telescopic unit is set such that the slide at least approximates the transfer of the sorting piece from the conveyor line to the slide
  • a solution that is very different from the above-described solutions to the task provides for an embodiment of the feed unit with a disk-like, rotating, non-rotationally symmetrical conveying element which, with its regions remote from the axis, engages the sorting pieces that have reached the specified conveying location and in this way does Feeds to the input device until the areas near the axis lose their grip on the sorting piece. In this way, the sorting pieces are pulled along by the conveying element as long as the areas remote from the axis engage the sorting piece, so that a defined feed can also be achieved in this way.
  • a height adjustment can be provided for the conveying element, so that, as a result, sorting pieces of different thicknesses nevertheless remain in engagement with the conveying element for the same length.
  • a swash plate can be provided in the same way, which due to its imbalance also only engages with the sorting piece for a certain period of time per revolution and thus ensures a defined advance of the sorting piece.
  • Figure 1 is a schematic representation of a top view of a first positioning device with a downstream input device
  • Figure 2 is a schematic representation of a side view of the first positioning device
  • Figure 3 is a schematic representation of a top view of a second positioning device with a subordinate
  • Figure 4 is a schematic representation of a side view of the second positioning device
  • Figure 5 is a schematic representation of a top view of a third positioning device
  • Figure 6 is a schematic representation of a side view of the third positioning device
  • FIG. 7 shows a schematic representation of a side view of a telescope unit which is just in the extended state
  • Figure 8 is a schematic representation of a side view of the telescopic unit in the retracted state according to Figure 7;
  • FIG. 9 is a schematic representation of a side view of a fourth positioning device with a vertical transfer device.
  • FIG. 1 shows a schematic representation of a top view of a first positioning device 2, with which flat sorting pieces 6 located in a horizontal stack 4 are transferred to an input device 8 shown in detail with a precise position.
  • the positionally accurate transfer is so extremely important because the sorting pieces 6 are then rotated from the horizontal to the vertical position in the part of the input device 8 shown here and are then shot into the pockets of a sorting conveyor (also not shown here) using a shooting device (not shown here) , Because the above-mentioned process steps for sorting the sorting pieces 6 take place at a comparatively high sorting speed, it therefore makes sense that the sorting pieces 6 must be able to be handled very precisely at all times.
  • the principle of operation also applies to a second positioning device 10 shown in more detail in FIGS. 3 and 4 and a third positioning device 12 described in more detail in FIGS. 5 and 6.
  • the flat sorting pieces 6 are advertising brochures folded in the A4 format, in which one or more loose insert sheets are inserted.
  • the prospectuses are not stapled, but only nested as a loose-leaf collection. It is easy to see that such sorting pieces 6 are extremely difficult to handle because, with the exception of the folded edge, which is referred to below as the preferred edge 14, they otherwise do not provide any points of attack for a positionally accurate automated transport.
  • These sorting pieces 6 are now placed in the stack 4 on a separating drum 16 on a shelf 18.
  • the separation stream is a component of a take-off unit 15, which is shown enlarged within the dashed lines in FIG.
  • the bottom-most sorting piece 6a is then actively sucked in from below by means of suction cups 20, which are arranged on the rotating singling drum 16, and is thus initially deflected downward from the stack 4.
  • suctioned sorting piece 6a is pressed on its preferred edge 14 by means of a lever 22 onto a counter bearing 24 arranged on the singling drum 16, so that the sucked sorting piece 6a which is clamped in with the lever 22 now follows the circular movement of the singling drum 16.
  • Telescope unit 30 promotes. The exception is the process of incorrectly deducting several sorting items at the same time.
  • the lever 22 has means for measuring thickness not shown, for example by means of an inductive sensor. Now actually becomes a
  • these sorting pieces are no longer fed onto the conveyor line, but are discharged into a tray (not shown here).
  • the telescope unit 30 is in the individual below
  • a movable carriage 32 of the telescopic unit 30 extends at the speed of the strip-shaped belts 28 'of the conveyor section 26 which were last arranged in the conveyor section 26, that is to say that it performs an extension movement when the preferred edge 14 of the Sorting piece 6a reaches a light barrier 34.
  • the Carriage 32 which also has strip-shaped conveyor belt systems 38, travels a defined feed distance and places the sorting piece 6a on a conveyor belt 36 when it is retracted, ie when the backward insertion movement is carried out
  • Input device 8 from where it is then transported in the direction perpendicular to the previous conveying direction in the input device 8 and rotated into the vertical.
  • a rolling element 42 is additionally provided, which always presses onto the conveyor belt 36 when the sorting piece 6a has just been put down, which contributes to further maintaining the exact storage location for the sorting piece 6a.
  • the second positioning device which is only slightly modified compared to the first positioning device 2, can be clearly seen from FIGS. 3 and 4 that in principle only the course of the conveying path 26 changes Has.
  • the available height is used and the sorting pieces ⁇ a separated with the singling drum 16 are first brought up to the telescopic unit 30 vertically, then horizontally and finally obliquely downwards.
  • a light barrier which is not shown here, is provided, the reaching of which from a sorting piece 6a leads to the slide 32 being pushed out.
  • a pneumatic unit 44 is now also shown with a plunger 46 driven by it, which is coupled to the slide 32.
  • the pneumatic unit 44 could also be replaced by an electric motor drive for the plunger 46, which, under suitable circumstances, could also allow less noisy operation.
  • the telescopic unit 30 is also shown in the extended position in the second positioning device 10.
  • Positioning device 2 or 10 the third positioning device 12, which has been slightly modified, clearly shows, according to FIGS. 5 and 6, that the sorting piece 6a is transferred here to the slide 32 of the telescopic unit 30 in a perpendicularly falling direction.
  • this embodiment variant makes it possible to simplify the input device 8 in such a way that the conveyor section for rotating the sorting pieces 6a has become obsolete from the horizontal to the vertical position.
  • FIGS. 7 and 8 show a particularly preferred embodiment variant for the telescopic unit 30 in a schematic illustration.
  • the telescopic unit 30 comprises a plurality of conveyor belt systems 38, each of which represents a conveyor belt strip.
  • Each conveyor belt system 38 has two pairs of rollers 48, 50 which are coupled by a closed belt 38 'and each comprise two rollers 48a and 48b or 50a and 50b. The relative position of the two rollers 48a and 48b or 50a and 50b within a pair of rollers 48, 50 is fixed to one another.
  • the pair of rollers 48 is arranged in a fixed position on the telescopic unit 30 and the other pair of rollers 50 is attached to the slide 32, which carries out the extension movement in the direction of an arrow 52 and the insertion movement in the direction of an arrow 54.
  • the rollers 48b and 50b each have a freewheel, the roller 48b being locked in the counterclockwise direction and the roller 50b in the clockwise direction.
  • the band 38 ' only rolls over the rollers 48a and 48b of the stationary pair of rollers 48, both rollers 48a and 48b rolling in a clockwise direction.
  • the sorting piece 6a once it has reached the light barrier 34, no longer changes its position relative to the roller 50a during the extension movement, which is highly intended.
  • this constellation in which the band 38 'rolls only over the rollers 50a and 50b attached to the carriage 32, the roller 50a running in the clockwise direction and the roller 50b in the counterclockwise direction.
  • the sorting piece 6a does not “feel” the insertion movement at all, but retains its end position achieved with the extension movement as desired
  • Preferred edge 14 of the sorting piece 6a thus always comes to lie exactly at the desired location on the input device 8.
  • a spring plate 58 supported with rollers 56 is provided, which presses the sorting piece 6a lightly against the adhesive conveyor belt 38 'during the ejection movement and at the Insertion movement over the sorting piece 6a - without friction with the sorting piece 6a - rolls back.
  • FIG. 9 shows a schematic representation of a side view of a fourth positioning device 60, which is based on the third positioning device 12, but is designed with a vertical transfer device 62 instead of a telescopic unit 30.
  • This fourth positioning device 60 is characterized in that a section 26 'of the conveying path 26 immediately preceding the predetermined conveying location is oriented substantially perpendicularly, this section 26' of the conveying path 26 comprising a pair of belts 64, 66 for guiding the sorting piece 6a , wherein the one band 64 of the pair of bands 64, 66 is guided on two rollers 68, 70 and runs from the other band 66 of the
  • Band pair 64, 66 can be lifted for a predetermined time.
  • the predetermined advance of the sorting piece 6a according to the invention is realized within the scope of a free falling piece, which ends when the sorting piece 6a strikes the input device 8.
  • the sorting piece 6a lies directly on the input device 8 with the preferred edge 14 and can thus be shot into the sorting conveyor.
  • this positioning device 60 is characterized on the one hand by its small space requirement and on the other hand by the fact that in particular sorting pieces 6a, into which protruding loose sheets are inserted over the edge, can be fed reliably without the inserted sheets being lost or leading to material jams and the like.
  • a sensor which is arranged only a little downward from the roller 70, detects the exit of the sorting piece 6a with a correspondingly predetermined length from the pair of belts 64, 66 and thus triggers the lifting of the belt 64 by suitable control means 72 ,
  • the duration of this lifting is chosen so that the duration of the lifting process is adapted to the cycle time of the sorting piece feed and to the length of the sorting piece 6a.
  • the capacity of all the positioning devices 2, 10, 12 and 60 shown can be increased by installing a switch in front of the sections in order to achieve the predetermined feed in the conveyor section 26, which switches the current generated with the singling drum 16 divides isolated sorting pieces 6a into different feed paths, which means that, for example, two telescopic units 30 or two vertical transfer devices 62 are operated in parallel next to one another.
  • a third or fourth, etc. mode of operation operated in parallel is also conceivable.
  • the only limitation is likely to be the speed of the separating device, the proper functioning of which, with a more or less unlimited capacity, sets reasonable system-related limits. LIST OF REFERENCE NUMBERS

Landscapes

  • Sorting Of Articles (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

L'invention vise à mettre en oeuvre un dispositif d'alimentation précise d'éléments de tri plats à un dispositif d'entrée destiné à un convoyeur de tri, permettant d'alimenter de façon suffisamment précise pour le traitement ultérieur, des éléments de tri problématiques tels que par ex. des envois postaux. A cet effet, une unité de retrait (15) séparant périodiquement les éléments de tri plats (6) alimente les éléments de tri plats (6a) de façon individuelle à une bande convoyeuse (26), et une unité d'alimentation (30) transfère les éléments de tri plats individuels (6a) au dispositif d'entrée (8) au moyen d'un mouvement d'avancement défini, lorsque ceux-ci ont atteint une position précise de la bande convoyeuse (26). De cette manière, un élément de tri est disposé dans une position finale précise dans le dispositif d'entrée à l'aide du mouvement d'avancement défini, de manière que le traitement ultérieur, notamment le positionnement à la verticale de l'élément de tri, peut être réalisé de façon sûre et automatique. Par ailleurs, ledit dispositif d'alimentation fonctionne indépendamment du format ou de la nature de l'élément de tri étant donné qu'une translation ciblée de l'élément de tri, de l'ordre du mouvement d'avancement défini, est réalisée lorsque l'élément de tri parvient à la zone de convoyage prédéfinie.
EP03738111A 2002-10-23 2003-07-03 Dispositif d'alimentation precise d'elements de tri plats a un dispositif d'entree destine a un convoyeur de tri Expired - Fee Related EP1554059B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03738111A EP1554059B1 (fr) 2002-10-23 2003-07-03 Dispositif d'alimentation precise d'elements de tri plats a un dispositif d'entree destine a un convoyeur de tri

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP02023579 2002-10-23
EP02023579 2002-10-23
PCT/EP2003/007082 WO2004037449A1 (fr) 2002-10-23 2003-07-03 Dispositif d'alimentation precise d'elements de tri plats a un dispositif d'entree destine a un convoyeur de tri
EP03738111A EP1554059B1 (fr) 2002-10-23 2003-07-03 Dispositif d'alimentation precise d'elements de tri plats a un dispositif d'entree destine a un convoyeur de tri

Publications (2)

Publication Number Publication Date
EP1554059A1 true EP1554059A1 (fr) 2005-07-20
EP1554059B1 EP1554059B1 (fr) 2009-03-11

Family

ID=32116220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03738111A Expired - Fee Related EP1554059B1 (fr) 2002-10-23 2003-07-03 Dispositif d'alimentation precise d'elements de tri plats a un dispositif d'entree destine a un convoyeur de tri

Country Status (4)

Country Link
EP (1) EP1554059B1 (fr)
JP (1) JP4092336B2 (fr)
DE (1) DE50311289D1 (fr)
WO (1) WO2004037449A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4469671B2 (ja) 2004-07-09 2010-05-26 株式会社東芝 紙葉類取り出し装置
EP2165776B1 (fr) * 2008-09-18 2012-02-01 Selex Elsag S.P.A. Système pour le tri et le séquençage d'objets postaux

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63307021A (ja) * 1987-05-28 1988-12-14 Akashi Eng Kk 冊子の折込み帯封装置
CH688711A5 (de) * 1994-08-02 1998-01-30 Grapha Holding Ag Vorrichtung zum Beschicken der Behälter eines Verteilförderers.
US5860504A (en) * 1994-11-16 1999-01-19 Lockheed Martin Corporation Transfer buffer and inserter and method
DE19545057C1 (de) * 1995-12-02 1996-08-29 Licentia Gmbh Verfahren zum Zuführen von flachen Sendungen zur Saugvereinzelung einer Stoffeingabe
JP2000061405A (ja) * 1998-08-17 2000-02-29 Dainippon Printing Co Ltd 郵便物の区分け装置及び郵便物の区分け方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004037449A1 *

Also Published As

Publication number Publication date
JP4092336B2 (ja) 2008-05-28
JP2006502935A (ja) 2006-01-26
DE50311289D1 (de) 2009-04-23
WO2004037449A1 (fr) 2004-05-06
EP1554059B1 (fr) 2009-03-11

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