EP2374745A2 - Stapelvorrichtung für die Bearbeitung von Poststücken mit Standard- bis C4-Format - Google Patents

Stapelvorrichtung für die Bearbeitung von Poststücken mit Standard- bis C4-Format Download PDF

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Publication number
EP2374745A2
EP2374745A2 EP11162146A EP11162146A EP2374745A2 EP 2374745 A2 EP2374745 A2 EP 2374745A2 EP 11162146 A EP11162146 A EP 11162146A EP 11162146 A EP11162146 A EP 11162146A EP 2374745 A2 EP2374745 A2 EP 2374745A2
Authority
EP
European Patent Office
Prior art keywords
launching device
postal item
postal
stacking machine
helix
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.)
Withdrawn
Application number
EP11162146A
Other languages
English (en)
French (fr)
Other versions
EP2374745A3 (de
Inventor
Cristiano Franzone
Simone Antonino BADANZA
Felice Solari
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.)
Elsag Datamat SpA
Original Assignee
Elsag Datamat SpA
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 Elsag Datamat SpA filed Critical Elsag Datamat SpA
Publication of EP2374745A2 publication Critical patent/EP2374745A2/de
Publication of EP2374745A3 publication Critical patent/EP2374745A3/de
Withdrawn legal-status Critical Current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
    • B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
    • B65H31/06—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled on edge
    • 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
    • B65H29/70—Article bending or stiffening arrangements
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/32—Orientation of handled material
    • B65H2301/321—Standing on edge
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4214—Forming a pile of articles on edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1916—Envelopes and articles of mail

Definitions

  • the present invention relates to an improved stacking machine for postal sorting machines for processing both standard-sized items (letters up to C5) and of larger or extended sizes (objects up to the known C4 or slightly higher).
  • the postal items are processed by machines designed to individualize, and sorting postal items.
  • processing objects up to C4 including open magazines and objects covered with cellophane (poliwrapped), and particularly to achieve a proper stacking, increases the risk of jamming due in particular to interference between the tail portion of a postal item and the head portion of the next postal item during the step of generating the stack of postal items particularly due to dynamic friction between the incoming object and the stacked object.
  • Jams may also cause, in addition to machinery arrests, damage to the postal item which is then delivered to its final destination in poor condition or may not even be deliverable.
  • the aim of the present invention is to provide a stacking machine with innovative technical solutions capable of increasing the number of formats that can be automatically processed up to C4 format(including items such as paper bags, open magazines and poly-wrapped articles), including if necessary the speed reduction of the machine, but without increasing machinery jamming and damage rate of the postal items.
  • the aim of the present invention is achieved by way of a stacking machine made according to claim 1.
  • Figure 1 is illustrated with 1, as a whole, a stacking machine for postal items.
  • the stacking machine 1 can be arranged in series, such as downstream of a sorting machine comprising a plurality of channels 2, each corresponding to a set of postal addresses grouped according to the sorting needs (e.g. all postal items destined to one or more Postal Code ZIP or zip codes) and/or sequencing (e.g. addresses with consecutive delivery points destined to one or more postal carriers).
  • the stacking machine 1 operates to arrange the postal items in special stacks aligned along two substantially orthogonal planes and having in common a line substantially perpendicular to each postal item.
  • the stacking machine includes a launching device 3 to impart speed (momentum) to the postal items spaced from each other and coming from channel 2 and a compacting group 6 which receives individualized postal items launched to form a stack (or pack) of postal items in a controlled manner.
  • the postal items come in contact by inertia to a stop device 4 to block each postal item along a trajectory (schematically shown in figure 4a ) substantially straight, at least partially defined by the launching device 3 and by a guide group 5 to guide the postal item along the launch trajectory towards the compacting group 6.
  • the launching device 3 is made of rollers that pick up a head portion of the postal item to push it towards the stop device 4.
  • the launching device 3 comprises a profiled roller 7 and a counter roller 8 rotating around respective axes parallel to each other.
  • the stop device 4 comprises a transverse wall 9 to the launch trajectory of the postal item determined in combination by the launching device 3 and the guide group 5 to stop the head portion of the postal item against a stop defined by the wall 9.
  • the guide group 5 controls the position of the postal item to ensure the correct positioning towards the wall 9 with respect to the compacting group 6 and to avoid trajectories that would cause jamming.
  • the guide group 5 preferably includes a pair of helixes 10, 11 having respective axes transverse to the trajectory of the postal item towards the wall 9, the helix 10 being longer than helix 11 and respective axes being spaced at a distance at least twice the diameter of the helix 10. In this way, the helix 11 engages the tail portion of the standard format postal item as detailed below.
  • the helix 10 is proximal to the roller 7 and the helix 11 is proximal to the wall 9 and each has respective threads 12, 13 as to contact at least one edge of the postal item interposed between the head portion and a tail portion while the postal item moves towards the wall 9.
  • Threads 12, 13 and the relative rotation direction of the helixes 10, 11 are such that when a postal item is launched by the launching group 3, the postal item itself is translated substantially perpendicular to the launch trajectory towards the compacting group 6.
  • the helix 10 is disposed in the half adjacent to the roller 7 of the distance between the roller itself and the wall 9 so as to cooperate with a tail portion of a postal item which has an elongated shape, such as a C4, when the latter contacts the wall 9.
  • the threads of the helix 10 have a radius, possibly variable, and a beginning in the axial direction so that a front portion of the postal item leaving the launching device 3 does not interfere with the same threads of the helix 10.
  • the guide group 5 comprises a diverter 14 to intercept the tail portion of the newly launched postal item, thereby permitting a head portion of the next postal item processed by the launching device 3 to overlap without interfering with the tail portion of the postal item already launched. Then the trajectory of the front portion of each postal item is not conditioned by the helix 10 while normally only the tail portion of the elongated postal items (C4) is translated in the direction of the compacting group 6 via the helix 10.
  • the diverter 14 comprises one or more elastically flexible blades placed immediately downstream of the launching roller 7.
  • a blade 14 cooperates with the postal items having a large size, such as C4, while another blade 14, of lesser stiffness, cooperates with standard format letters.
  • the blades 14 are positioned in order to urge a tail portion of the postal item to engage the helix 10 having little or no effect on the engaging manner of the head portion on the helix 11.
  • the compacting group 6 comprises a resting plane 15 for the longitudinal side of the postal items, a transport belt device 16 and a compactor 17 substantially perpendicular to the resting plane 15 and adapted for supporting the pack of postal items.
  • the resting plane 15 is tilted downwardly, i.e.
  • the resting plane 15 has a vertical dimension less than that from which the postal items are launched.
  • the launching height is determined by a transverse back wall 18, preferably perpendicular to the roller 7 and to the counter roller 8 defining an opening from which protrudes the thread 12 of the helix 10.
  • the back wall 18 defines a support for the longitudinal sides of all postal items from channel 2.
  • the resting plane 15 and the back wall 18 are separated by a step 19 so that a postal item with a low stiffness would fall by gravity on the resting plane 15 without folding back towards the launch trajectory.
  • the step 19 is interposed between the compacting group 6 and the helixes 10, 11 for preventing prolonged contact time between the helixes 10, 11 and the back face of the last stacked postal item, thus avoiding abrasion upon the object itself due to the continuous dragging of the helix in rotation.
  • the transport device 16 When the postal item comes in contact with the resting plane 15, it is also supported by the transport device 16 including a first belt 20 proximal to the wall 9 and a second belt 21 proximal to the helix 10 and spaced from the first belt 20.
  • the belts 20, 21 and compactor 17 are conducted by a motorized system M preferably synchronously, so that straight movements are equal and simultaneous.
  • the motorized system M is controlled by a control unit C which is programmed to move the compactor 17 and belts 20, 21 on the basis of one or more characteristic parameters of the geometry and/or type of postal item to be stacked detected by a series of sensors indicated schematically with S.
  • the characteristic parameters comprise the thickness, format (height and length) and the outer surface of the type of processed postal items.
  • the control unit C controls a first movement which consists in distancing the compactor 17 with respect to the roller 7 and the helixes 10, 11 and in particular consequently moving the belts 20, 21 by an amount proportional to the thickness detected upstream of the sensor S.
  • the control unit C controls a second movement which provides a removal of a quantity greater than the previous case, in equality of thickness measured.
  • the control unit C controls the approach of the compactor 17 to helixes 10, 11 or the maintainance of the position if the distance is not excessive.
  • the compactor 17 comprises an arm 22 projecting transversely from the resting plane 15 and a wall 23 hinged at a free end portion 24 to the arm 22 and rigidly connectable to the belt 20.
  • the belt 20 has a plurality of slots 25 and the wall 23 has a projection 26 adapted for engagement within a groove 25.
  • the hinge axis between the wall 23 and the arm 22 is parallel to the advancing direction of the belts 20, 21 so that the projection 26 engages a slot 25 following an arc of a circle trajectory and the slots 25 have a length so as not to interfere with said trajectory.
  • the roller 7 has a profile defining a plurality of sections having different diameters to curve or bend the postal item profile thus giving greater stiffness to the latter during the launch step.
  • the roller 7 has a first and a second tapered portion 27, 28 converging towards a central body 29 interposed between the tapered portions.
  • the roller 7 further comprises a cylindrical section (slightly convex) where a strap 30 is wound and a deformable ring 31 both mounted on the central body 29, the strap 30 being interposed between the deformable ring 31 and the tapered portion 27 proximal to the bottom wall 18.
  • the deformable ring 31 has a diameter greater than the one determined by the sum of the diameter of the main body 29 and twice the thickness of the strap 30 and is made of a material having a high elastic deformability. Moreover, this material has a deformation load such that the deformable ring 31 substantially presents the maximum diameter when on the roller 7 transit non rigid postal items, such as a very thin standard letter with an envelope made of low weight density paper and an insert consisting of a thin sheet. According to one aspect of the present invention, when the roller 7 processes postal items having a size and a stiffness greater than those of a normal letter, the deformable ring 31 is such to deform and therefore does not significantly contribute to the deformation of rigid postal items.
  • the counter roll 8 includes a deformable counter ring 32 contacting the strap 30 and a deformable counter ring 33 contacting the central body 29 between the deformable ring 31 and the tapered portion 28. As illustrated in Figure 3b the counter ring 33 maintains the postal item near the central body 29, so that the tapered portion 28 can bend the item itself in the intended way.
  • both the fins 14 and the helixes 10, 11 guide the processed postal item in a direction transverse to the launching trajectory in order to free the launching area for the next postal item avoiding or at least reducing interference and jams.
  • a postal item 40 of C4 format is processed by the roller 7 and by the counter roll 8 and is consequentially stiffened by the curvature illustrated in Figure 3a .
  • the fins, or better the blade 14 proximal to the bottom wall 18 have such a stiffness as to be deformed and a head portion 41 of the postal item 40 is directed towards the wall 9 and is engaged in the helix 11.
  • the action of the blade 14 is applied to a tail portion 42 of the postal item 40 to engage the tail portion of the helix 10 itself and to free the trajectory defined by the rollers 7, 8 allowing the advancement of the subsequent postal item 50 ( Figure 4c ).
  • the action of the blade 14 is assisted by the helix 10 so as to free as quickly as possible the trajectory of the launching device 3 and to avoid interference between a head portion 51 of the postal item 50 and the tail portion 42.
  • the blade 14 applies such an action that the blade 14 is deformed when any curved postal item is still in contact with the rollers 7, 8 and at the same time, for moving the tail portion of the heavier postal items considering however, that when the blade 14 acts by bringing the tail portion 42 of C4 items near to helix 10, postal items are like free, released bodies except for the restraint by the friction force.
  • the helix 10 completes the guiding action by leading the tail portion 42 towards the wall 23.
  • the motorized system M is controlled so as to adjust the position of the stack or pack of postal items according to thickness and/or other physical postal item characteristics (e.g. height and/or length and/or presence of non-wrapped magazines and/or postal items packed in an envelope of polymeric material, i.e. nylon) measured by appropriate sensors S.
  • the postal item 40 has a thickness such that the control unit C controls the retraction of a portion of the wall 23 at a dimension S1.
  • the postal item 50 has a thickness S2 and, correspondingly, the control unit controls a displacement S2 of the wall 23.
  • the sensors S may comprise a sensor to detect the presence of metal staples in a magazine, for example an inductive sensor.
  • said sensor S is placed on the bottom wall of the channel 2 on which the backs of the magazines bound by metal staples rest.
  • the helix 10 allows the guiding of the tail portion of elongated format postal items after the latter has been processed by the launching device 3, i.e. is no longer in contact with the rollers 7, 8 to free the launch trajectory allowing closer spacing between postal items having different sizes. This method prevents non rigid postal items from bending and interfering with the movement trajectory of the postal items imposed by the launching device 3 and, therefore, avoiding jams.
  • the helix 10 it is possible to process postal items with formats up to C4.
  • the wall 9 is spaced from the roller 7 of the launching device 3 so that when a head portion of a C4 format postal item contacts the wall 9, the relative tail portion is engaged in the helix 10 and has already been spaced from the roller 7, 8. It has been verified that by spacing the wall 9 from the launching device, the postal items of a size less than C4 effectively free the trajectory even without interacting with the helix 10.
  • the resting plane 15 is inclined and vertically spaced from the back wall 18.
  • the helix 10 is longer than the helix 11 for engaging as quickly as possible the tail portion 42 of the postal item 40 and thus freeing the trajectory for the next postal item 50 so as to minimize the delay between two successive postal items.
  • the blades 14 are provided for the same purpose.
  • the stacking machine 1 can easily process postal items having different formats.
  • the belts 20, 21 and the wall 23 are motorized for implementing control methods that promote the correct positioning of the postal items in a stacked position.
  • the control unit C controls varying movements for postal items having thickness, format and/or different types of outer surfaces (paper envelope, open magazine, poliwrapped)
  • the controller is programmed to control a movement of belts 20, 21 and wall 23 based on an offset value table optimized to facilitate the stacking of the individual postal item. In this way it is possible for example to create more space on the resting plane 15 for the arrival of the postal item 50 having a high-friction surface (poliwrapped) and successively reassemble the pack to prevent the bending over of postal items.
  • Some applications may only include the helix 10 which engages the tail portion 42 of an elongated postal item.
  • shorter postal formats such as letter format
  • Assistance for directing the letter format postal item to the compacting unit 6 may come from the diverter 14, which pushes the tail portion of each postal item to the compacting group 6 when the item is no longer engaged on the rollers 7, 8.
  • One of the two tapered portions 27, 28, in particular, the tapered portion 28, may be absent, the curvature being defined however by the action of the remaining tapered portion and of the deformable roller 31.
  • the counter roller 8 may be absent and the pressure to keep the postal item against the roller 7 to obtain the curvature is applied by a conveying strap 60 which defines the channel 2 and cooperates with one of the faces of the postal item.
  • the conveying strap 60 can be interposed between the roller 7 and a plate which has a distance from the roller 7 defining a contact surface for the postal item and therefore defining a curved wave shape.
  • the wall 9 in a mobile manner and couple the wall itself to a dampener so that an incoming postal item from the launching device 3 impacts against the wall 9 and activates the dampener dissipating at least part of the kinetic energy.
  • the wall 9 is hinged around an axis A and a dampener 60 is coupled in parallel with a biasing spring 61.
  • the spring 61 is compressed during an impact and takes the wall 9 back to an initial position advanced towards the launching device 3.
  • the dampener 60 and the spring 51 are connected to the wall 9 by means of a leverage 70, i.e.
  • the wall 9 may also present a layer 62 preferably extended on the wall itself and made out of a soft material to further absorb the impact energy.
  • the leverage 70 is double-L-shaped rotating around a hinge 71. Particularly, when a head portion of the postal item 40 launched from the rollers 7 and 8 collides with the soft layer 72 on the wall 9, the leverage 70 begins to rotate about the hinge A and compresses both the spring 61 and the viscous hydraulic actuator 60.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Sorting Of Articles (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
EP11162146A 2010-04-12 2011-04-12 Stapelvorrichtung für die Bearbeitung von Poststücken mit Standard- bis C4-Format Withdrawn EP2374745A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000275A ITTO20100275A1 (it) 2010-04-12 2010-04-12 Impilatore per trattamento articoli postali di formati standard ed extended sino al formato c4

Publications (2)

Publication Number Publication Date
EP2374745A2 true EP2374745A2 (de) 2011-10-12
EP2374745A3 EP2374745A3 (de) 2012-01-18

Family

ID=43593664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11162146A Withdrawn EP2374745A3 (de) 2010-04-12 2011-04-12 Stapelvorrichtung für die Bearbeitung von Poststücken mit Standard- bis C4-Format

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EP (1) EP2374745A3 (de)
IT (1) ITTO20100275A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2607277A1 (de) * 2011-12-23 2013-06-26 Neopost Technologies System zur Verbesserung der Stapelung von flachen Gegenständen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628788A (en) * 1970-01-19 1971-12-21 Burroughs Corp Jam detection device for document stacking
JPS598954U (ja) * 1982-07-07 1984-01-20 株式会社東芝 紙葉類集積装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970836A (en) * 1959-03-11 1961-02-07 Burroughs Corp Item handling apparatus
JPS5043904Y2 (de) * 1971-12-20 1975-12-15
JPS5154217Y2 (de) * 1972-11-07 1976-12-24
JPS595008Y2 (ja) * 1978-09-14 1984-02-15 日本電気株式会社 紙葉類の処理装置
EP0049718A1 (de) * 1980-10-15 1982-04-21 BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap Apparat zum Stapeln flacher Gegenstände und zum Beladen von Behältern
JPS5874455A (ja) * 1981-10-26 1983-05-04 Toshiba Corp 紙葉類の集積装置
JPS6090246U (ja) * 1983-11-22 1985-06-20 日本電気株式会社 紙葉類の方向転換機構
US4974826A (en) * 1987-10-15 1990-12-04 Bell & Howell Company Document stacking apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628788A (en) * 1970-01-19 1971-12-21 Burroughs Corp Jam detection device for document stacking
JPS598954U (ja) * 1982-07-07 1984-01-20 株式会社東芝 紙葉類集積装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2607277A1 (de) * 2011-12-23 2013-06-26 Neopost Technologies System zur Verbesserung der Stapelung von flachen Gegenständen
US8727344B2 (en) 2011-12-23 2014-05-20 Neopost Technologies System for improving stacking of flat items

Also Published As

Publication number Publication date
EP2374745A3 (de) 2012-01-18
ITTO20100275A1 (it) 2011-10-13

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