EP2222586B1 - Vorrichtung zur entstapelung multimodaler postsendungen - Google Patents

Vorrichtung zur entstapelung multimodaler postsendungen Download PDF

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Publication number
EP2222586B1
EP2222586B1 EP08864676A EP08864676A EP2222586B1 EP 2222586 B1 EP2222586 B1 EP 2222586B1 EP 08864676 A EP08864676 A EP 08864676A EP 08864676 A EP08864676 A EP 08864676A EP 2222586 B1 EP2222586 B1 EP 2222586B1
Authority
EP
European Patent Office
Prior art keywords
unstacker
head
sensor
control unit
unstacking
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.)
Not-in-force
Application number
EP08864676A
Other languages
English (en)
French (fr)
Other versions
EP2222586A2 (de
Inventor
Stéphane Ambroise
Stéphane Samain
Pierre Chorier-Pichon
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.)
Solystic SAS
Original Assignee
Solystic SAS
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Filing date
Publication date
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Publication of EP2222586A2 publication Critical patent/EP2222586A2/de
Application granted granted Critical
Publication of EP2222586B1 publication Critical patent/EP2222586B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/12—Suction bands, belts, or tables moving relatively to the pile
    • B65H3/124—Suction bands or belts
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/02—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge
    • B65H1/025—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge with controlled positively-acting mechanical devices for advancing the pile to present the articles to the separating device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/48—Air blast acting on edges of, or under, 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
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • B65H2511/214—Inclination
    • 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
    • B65H2511/40—Identification
    • B65H2511/414—Identification of mode of operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/20—Volume; Volume flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/60—Optical characteristics, e.g. colour, light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/70—Electrical or magnetic properties, e.g. electric power or current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/24—Inductive detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • 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 invention relates to an unstacking device of postal items comprising a motorized feed magazine for moving the shipments in stack on edge in a certain direction to an unstacking head capable of separating a first shipment from the stack and dragging it into a direction transverse to said direction of travel of the mail stack.
  • the invention relates more particularly to a device for unstacking mail items for a mail sorting machine of so-called "large format" mailpieces.
  • a mailing may include a simple letter with or without a window, a magazine, a newspaper, or a catalog in a plastic envelope or paper.
  • postal items leaving the unstacker are conveyed in series on edge to be brought in front of a read head.
  • the read head acquires an image of each serialized send for an automatic decoding of the distribution or routing address of the sending by OCR processing ("Optical Character Recognition") .
  • OCR processing Optical Character Recognition
  • the postal items are then sent to sorting outlets corresponding to the automatically decoded addresses.
  • the main store 1 includes a conveyor at band 2 with a motorized drive to move the items in the direction indicated by the arrow 6.
  • An operator arranges the postal items 3 in stack on edge on the conveyor belt 2 in front of a pallet 4.
  • the pallet 4 extends in a substantially vertical plane and is disposed facing a head or unstacking plate 5.
  • the pallet 4 is also provided with a motorized drive to push the rear of the stack and move it in the direction indicated by the arrow 6 to the head of unstacking 5.
  • the postal items forming the stack are held laterally by a jogging edge 7 which extends in a substantially vertical plane along a lateral edge of the belt conveyor 2.
  • the substantially flat unstacking head 5 extends in a plane vertical transverse to the direction indicated by the arrow 6 of displacement of the stack of items 3 on the belt conveyor 2 and is able to separate the first current mail at the front of the stack in the transverse direction indicated by the arrow 8 perpendicular to the arrow 6.
  • the unstacking head 5 comprises two substantially rectangular openings in which a perforated strip 9 and one or more vacuum chambers or suction nozzles (not shown) are driven by a motor.
  • the perforated band 9 and the suction nozzles cooperate to pick up the first shipment of the battery by suction and to move it in the direction indicated by the arrow 8.
  • the stack of postal items 3 disposed in the main magazine 1 is moved by the motorized stepper type drives of the belt conveyor 2 and the pallet 4 which are actuated at the same speed.
  • the first sending to the front of the stack of shipments is thus brought to bear against the unstacking head 5 so that this current mail piece of the stack is pressed against the unstacking head 5 and is separated from the stack by the combined effect of the suction of the nozzles and the movement of the perforated tape 9.
  • the mailpiece is then pinched between two deformable wheels 10 arranged in the extension of the head 5, that is to say downstream of the head depilage in the direction of the arrow 8.
  • These wheels 10 are motorized to convey the current shipment downstream of the unstacking device. They consist of an elastomer material elastically deformable so as to be able to adapt to different thicknesses of postal items.
  • This unstacking process is repeated as a new mailing at the front of the pile is presented in front of the unstacking head 5.
  • the postal items For the rest of the sorting process, it is necessary for the postal items to be serialized at the output of the unstacking device with a constant pitch between consecutive items.
  • the driving of the perforated band 9 and the suction nozzles is thus actuated and stopped at a constant rate.
  • the rate is 3 mailings per second.
  • the patent document EP0562954 discloses a feeder device similar to that presented above which further comprises a motorized chute disposed between the belt conveyor and the unstacking head.
  • the presence of this motorized fall has the effect of presenting in a fan the mailings.
  • the first postal items at the front of the pile are loosened from other postal items.
  • presence sensors are arranged to control this fan tilt and a motorized fall control unit and belt conveyor to fill the chute and tilt postal items. This arrangement described above is suitable for certain categories of postal items but does not cover a wide spectrum of mail items to be processed.
  • the object of the present invention is therefore to improve the performance of the unstacking device for an expanded spectrum of flat objects.
  • the object of the invention is to avoid the deterioration of these flat objects, the stuffing of the unstacking device, to increase the processing flow rate and to reduce the rate of objects in multiple engagement.
  • the subject of the invention is an unstacking device as defined above, characterized in that it comprises at least one material sensor capable of supplying a signal indicative of the presence of at least one material in a current shipment and a control unit adapted to control said feed magazine and said unstacking head according to several operating modes specific to the presence or absence of said (or said) material (s) in the items to be unstacked, said control unit being arranged to select an operating mode from among said plurality of operating modes as a function of the signal provided by said sensor.
  • the presence of one or more material sensors makes it possible to categorize each item of mail, in particular to determine whether it is a shipment in an open or unopened plastic envelope so as to precisely parameterize the operation of the supply magazine and the unstacking head.
  • the unstacking device further comprises at least one blowing device arranged to send an air jet on said shipments facing the unstacking head.
  • the control unit comprises at least three sets of control parameters for controlling the blower member according to one of said first, second or third mode of operation.
  • the blowing member comprises a first blowing element which is arranged between the feed magazine and the unstacking head so as to send a substantially vertical air flow and directed from the bottom to the top, a second blowing element disposed downstream of said unstacking head with respect to said transverse direction so as to send a substantially vertical air flow directed from the bottom upwards and a third blowing element disposed downstream of the unstacking head by relative to said transverse direction so as to send a substantially horizontal air flow directed in the opposite direction to the transverse direction.
  • the unstacking head comprises a motorized perforated strip with variable speed controlled by the control unit and in which the control unit comprises at least three sets of speed profile. to control the motorization of the unstacking head according to one of the operating modes.
  • the unstacking device according to the invention is more particularly applicable to the sorting of large format postal items, but it can also find an application for small format postal items.
  • the figure 1 has been described above with reference to a unstacker of flat mail items according to the state of the art.
  • the figure 2 illustrates a device for unstacking mail items according to the invention, such as letters and flat postal objects called large format with plastic wrap or not.
  • the elements common with those of the figure 1 carry identical numerical references.
  • This unstacking device serializes one by one the postal items prior to their conveying during which they are moved with a normally constant pitch.
  • the motorized drives of the deformable wheels 10 between which are clamped serialized shipments can be controlled at a variable speed to catch up if necessary gaps between consecutive shipments.
  • This variable speed arrangement constitutes a synchronization system ensuring a constant pitch.
  • this synchronization system authorizes the performance of certain correction operations during a time window T compatible with the requirement of a constant pitch between consecutive items at the output of the unstacking device.
  • the unstacking device comprises a main feed magazine 1 provided with a belt conveyor 2 with a motorized drive on which postal items 3 are arranged in stack on edge at the front of a pallet 4 provided with a drive motorized which extends substantially in a vertical plane being slightly inclined to support the rear of the stack of shipments.
  • the belt conveyor 2 and the pallet 4 move the stack of items 3 on edge in the direction of the unstacking head 5 in the direction 6.
  • a chute 11 in the form of a gutter, constituting a secondary supply store between the end of the main conveyor 2 and the unstacking head 5.
  • the bottom of the chute 11 is located at a depth of about 79 mm below the upper surface of the conveyor 2 and has a width of about 98 mm in the direction 6.
  • the bottom of this chute 11 is provided with a set of secondary conveyors 12 with a motorized drive, for example here four belt conveyors, which move the shipments on edge in the chute in the direction 6 towards the unstacking head 5.
  • a motorized drive for example here four belt conveyors, which move the shipments on edge in the chute in the direction 6 towards the unstacking head 5.
  • the unstacking head 5 with a motorized drive extends vertically from the bottom of the chute 11 to a sufficient height corresponding at least to the maximum height of the postal items to be unstacked.
  • the unstacking head 5 in the form of a sheet is provided here with two rectangular openings arranged side by side in the direction 8.
  • an endless perforated strip 9 cooperates with vacuum chambers or nozzles suction (not shown) to enter and move in the direction 8 a current shipment of the stack that faces the unstacking head.
  • the unstacking device also comprises three blowguns controlled by solenoid valves. As explained in detail below, the blowers control the aeration of the stack, that is to say the forced spaces between successive mail items in the stack.
  • a first elongate bellows 24 such as a longitudinal slot is disposed at the transition zone between the main conveyor 2 and the chute 11, and constitutes a lateral edge of the conveyor 2.
  • a second blowgun 25 also of elongate shape such as a longitudinal slot is disposed at the transition zone between the chute 11 and the deformable wheels 10, and constitutes a lateral edge of the chute 11.
  • the first 24 and second 25 blowguns are arranged to exert a substantially vertical blow pressure directed upward.
  • a third blower 26 is disposed at the transition zone between the chute 11 and the deformable wheels 10 in a staggered manner so as not to obstruct the passage of the items between the deformable wheels 10.
  • This third blower 26 is disposed at a height of about 60 millimeters and exerts a substantially horizontal blowing pressure directed obliquely in the opposite direction to that indicated by the arrow 8.
  • the first 24, the second 25 and the third 26 blowgun are also shown in side view and from above respectively on the Figures 3 and 4 .
  • actuator refers to: the belt conveyor 2, the pallet 4, the secondary conveyors 12 of the chute 11, the perforated band and the suction nozzles of the unstacking head 5, the first 24, the second 25 and the third 26 blowgun.
  • the motorized drive of each of these actuators is connected to a control unit 13, for example a processing processor of programmable data.
  • a control unit 13 for example a processing processor of programmable data.
  • FIG 2 it is shown that a single control link CMD between the control unit 13 and a secondary conveyor 12 but it is obvious that the unit 13 is also connected by control links to the motorized drives other actuators.
  • the control unit 13 is arranged to independently control the motorized drives, that is to say asynchronously. It is understood that the latter can be synchronized with each other via the control unit 13.
  • the control unit is arranged to change the speed, the acceleration and the direction of the motorized drives of the store. supply and actuators in general.
  • the unstacking device comprises a set of sensors which each provide a detection signal to the control unit 13. As previously, for the sake of clarity, only one link has been shown. control CTRL between the control unit 13 and a sensor, but it is clear that the unit 13 is also connected by control links to other sensors operated according to the invention as described below.
  • the sensor 20 provides a signal indicative of the presence of a consignment when it is sufficiently retracted into the head under the effect of the push of the foot of the current consignment in the direction of the direction 6 itself pressed by the battery of load-bearing shipments in the fall 11.
  • This sensor 20 has more particularly, in the rest position, a free end protruding from the unstacking head which has a bevel profile widening in the direction of direction 6 and whose flat portion is flush with the bottom of the chute 11.
  • the sensor 20 moves in the direction 6 against a return spring (not shown) and the signal it provides, when it is retracted inside the unstacking head 5, can also be indicative of the distance on which it retracted with respect to its rest position and therefore of a pressure quantity exerted by the stack.
  • a return spring not shown
  • the sensor 20 is adapted to measure the pressure exerted by all the items in the drop at the foot of the items.
  • a pressure of 0.3 Newton feet of the items against the unstacking head places the shipments of the fall in a situation suitable for unstacking.
  • a control of the pressure of the feet of the items can be provided and the pressure can be adjusted by feeding the chute 11 in postal items.
  • the sensors 21 and 22 are reflection photocells arranged vertically above the sensor 20, for example at 80 mm from the bottom of the fall, to detect the presence of a current shipment facing a first intermediate portion of the head above the lower part of the head.
  • the sensors 21 and 22 are set to each provide a signal indicative of the presence of a current consignment when this sending is at a distance of respectively 6 and 13 millimeters from the head 5 in the direction 6.
  • the sensor 23 is disposed vertically above the perforated strips 9.
  • This sensor 23 is a flag mechanical sensor having the shape of a retractable finger in the thickness of the head 5 to detect the presence of a shipment facing the part. 5
  • the sensor 23 has a parallelepiped shape forming a trapezoid in section. In the rest position, the sensor 23 protrudes relative to the unstacking head.
  • the sensor 23, moving in the direction 6, provides a signal indicative of the presence of a shipment when it is sufficiently retracted into the head under the effect of the push of the top of the current shipment.
  • the signal emitted by the sensor 23 is also indicative of the pressure exerted by the top of the stack of postal items.
  • the pressure exerted on this sensor can be adjusted by feeding the drop in postal items or by activating certain actuators to straighten the stack of items.
  • the photoelectric barrier sensor 27 is shown arranged vertically at a height of about 80 millimeters from the bottom of the chute and whose beam is oriented transversely to the unstacking direction indicated by the arrow 8.
  • the dam sensor 27 is located in the cone input near and upstream of the deformable wheels 10 to detect the presence of shipments engaged in the system with deformable wheels.
  • the unstacking device also comprises material sensors, including a plastics sensor 28 as illustrated in FIGS. figures 2 , 3 and 4 .
  • the sensor 28 is disposed in the unstacking head 5 downstream of the perforated strip in the direction indicated by the arrow 8 and in the lower part of the perforated strip, so as to detect the presence of plastic only for the current mailing to unstack.
  • the plastic sensor 28 is a brightness sensor composed of one or more transmitting photocells calibrated in the infrared range which scans infrared radiation on the surface of the postal object, as well as a or a plurality of calibrated receiving photocells which measure the intensity reflected at all points on the surface of the shipment.
  • the use of infrared radiation for gloss measurement provides satisfactory results for the detection of plastic surfaces.
  • the intensities emitted and received are compared by the control unit 13 so as to discriminate postal items having a plastic surface or packaged in a plastic envelope.
  • the unstacking device according to the invention further comprises an inductive sensor 29 for the detection of metallic materials.
  • This inductive sensor 29 is arranged in the lower part between two rows of deformable wheels 10 as shown in FIG. figure 4 . With this arrangement, postal items unstacked and moved between the deformable wheels pass one by one above the inductive sensor 29.
  • this arrangement allows the detection of metallic materials contained in a mailing without parasitic influence of other shipments.
  • Such an inductive sensor 29 makes it possible to detect the presence of staples at the level of the singing of postal items, which is peculiar to open mail items of the magazine type.
  • the plastic sensor 28 and the inductive sensor 29 indicate the presence of plastic or metal materials on the mailpiece and respectively define plastic packaging category or open category shipments such as a magazine.
  • an open mode it is considered that a number of subsequent items to be unstacked have an open configuration, that is, the mail can be opened as a magazine.
  • the unit 13 controls the actuators so as to obtain a pile of straight, vertical and tight shipments against the unstacking plate 5.
  • This configuration of the stack of open mailings prevents the first page of the mailing The current to be stripped is sucked up by the suction nozzles and unstacked by the perforated belt while the following pages of this same consignment remain behind in the fall causing a deterioration of the shipment and certainly a jamming of the machine.
  • plastic shipments In this case, the unit 13 controls the actuators so as to obtain a stack of shipments inclined about 15 degrees backwards relative to the vertical, that is to say in the opposite direction to that indicated by the arrow 6.
  • the postal items provided with a plastic envelope have a high coefficient of friction because of the electrostatic phenomenon related to the plastic material which tends to stick together stacked items.
  • the plastic weld for closing the plastic envelope tends to increase the phenomenon of adhesion between the shipments of the stack.
  • the inclined configuration of the mail stack avoids several plastic items being unstacked at the same time. According to the invention, the double taps are thus reduced significantly.
  • the control unit 13 actuates the motorized drives of the actuators for a operation at a constant depilatory rate.
  • the speeds of movement of the conveyor belt 2 and the pallet 4 are identical.
  • the speed of movement of the belts of the conveyors 12 is slightly greater than that of the belt 2 or the pallet 4.
  • the speed of movement of the belts 9 is much greater than that of the belts of the conveyors 12.
  • the speed of the strip 2 is 0.096 m / s
  • that of the belts of the conveyors 12 is 0.152 m / s
  • that of the perforated strips 9 is 1.5 m / s.
  • the stack of shipments 3 singing then advances towards the unstacking head 5 and the first mailings to the front of the stack fall into the chute 11.
  • the stack of shipments is split and the shipments on song in the fall are placed in fan under the action of the faster movement of the conveyors 12 in the bottom of the fall.
  • a first current item to be unstacked is detected for example by the sensors 20, 21 and 23.
  • step 31 in which signals S are emitted by the brightness sensor 28 during unstacking of the current mailpiece and then by the inductive sensor 29 when the beam sensor 27 is obscured.
  • the arrangement of the sensors 28 and 29 makes it possible to emit signals S which concern only one postal item. These signals are combined to determine the category of the current shipment and the appropriate unstacking mode.
  • the following combination principle is applied: if the two sensors respectively indicate the presence of plastic and metal materials, it is considered that it is an open magazine packaged in a plastic envelope and that, therefore, , it belongs to the category plastic shipments, indeed its open configuration has more impact if the shipment is packaged; if the sensor 28 indicates that the current shipment is a plastic shipment and the sensor 29 does not indicate that it is an open shipment, then it is considered that it is a plastic shipment; if on the other hand the sensor 28 indicates that the current shipment is not a plastic shipment and the sensor 29 indicates that it is an open shipment, then it is considered that the current shipment is an open shipment; finally, if the sensors 28 and 29 indicate that the current item is neither a plastic item nor an open item, then the item is of the "other" type.
  • the category of each current item is memorized in a memory 19 connected to the control unit 13.
  • the control unit 13 then automatically determines the category of items. subsequent postal items to be retrieved by counting the number of mail items stored in memory belonging to a particular category.
  • the unstacking mode for shipments following to unstack is the plastic mode.
  • the unstacking mode for the next items to be unstacked is the open mode.
  • the update of the unstacking mode is thus carried out in real time by storing and counting the categories for each mailed parcel post.
  • Such a postage unloading device is called "multi-mode”.
  • step 32 the process continues at step 32 where the signals S provided by the sensors 20, 21, 22 and 23 are controlled by the control unit 13 to determine whether the current mail item to be unstuffed has a presentation. adequate unloading mode determined in step 31 to be unstacked without risk of deterioration or jamming.
  • step 32 the signals S of the sensors 20, 21, 22 and 23 are indicative of an adequate presentation of the current mail according to the unstacking mode and that one is in the time window T compatible with a constant step
  • step 33 the unit 13 controls the various actuators according to the mode selected in step 31.
  • Each appropriate presentation is detailed below with reference to the illustrated tables figure 6 according to the unstacking mode.
  • the presentation of the current mail is considered adequate in a plastic mode if the sensors 20 and 22 are obscured and the sensors 21 and 23 are not obscured indicating that the stack of mail is inclined by about 15 degrees to the rear.
  • the presentation of the current shipment is considered adequate if the sensors 20 and 23 are hidden which indicates that the shipment is straight.
  • the presentation of the current mail is considered adequate if the sensors 20 and 21 are obscured, which indicates that the stack of mail is slightly inclined backwards in an intermediate position between that of the plastic mode and that of the open mode.
  • step 33 the unit 13 controls for example the first blower 24 so as to exert a pressure of about 1 bar, the second blower 25 so as to exert a pressure of about 1.8 bar and the third blower 26 so as to exert a pressure of 0.9 bar. Furthermore, the desired speed of the perforated strips 9 being 1.5 m / s, in this plastic mode, in step 33, the unit 13 controls the motorizations of these perforated strips so that this speed is reached, for example in 130 milliseconds.
  • the first and second guns 24 and 25 exert a pressure to separate the plastic items that tend to adhere to each other. For the same reason, the unstacking speed of 1.5 m / s must be reached quickly. This strong acceleration makes it possible to extract the current sending of the stack. It is understood that the risk of deterioration is reduced because of the strength of the plastic casing and this despite the strong acceleration.
  • step 33 the unit 13 controls the closure of the first 24 and the second blower 25, the third blower 26 exerting a pressure of 0.9 bar.
  • the unit 13 also controls the drives of the perforated strips so that the speed of 1.5m / s is reached for example in 179 milliseconds.
  • step 33 the unit 13 controls the closing of the first 24 and the second blower 25, the third blower 26 exerting a pressure of 0.3 bar.
  • the unit 13 also controls the drives of the perforated strips so that the speed of 1.5 m / s is reached for example in 216 milliseconds.
  • open shipments need to be unstacked with a relatively low acceleration so as not to be damaged.
  • the process then loops to step 31 to determine which category belongs to the next mail item.
  • the category of the next shipment is stored in the memory 19 and access to this memory 19 to select the appropriate mode as described above.
  • step 32 If, in step 32, the signals S of the sensors 20, 21, 22 and 23 are indicative of an inadequate presentation of the current mail according to the unstacking mode, the process continues in step 34 in which unit 13 controls the actuators according to the state of the sensors and the mode selected in step 31.
  • the various controls of the belt conveyor 2, the pallet 4 and the secondary conveyors 12 are illustrated according to three tables corresponding to the three modes.
  • the value "0" corresponds to a non-occulted sensor or a non-controlled actuator and the value "1” corresponds to an occluded sensor or to a controlled actuator.
  • the value "X" corresponds to an indefinite value, that is to say "1" or "0".
  • the secondary conveyors are not controlled or not driven, they are stopped.
  • An obscured state of the sensor 20 means that the foot of the sending stack is pressed against the unstacking plate. A command of the secondary conveyors 12 is therefore not necessary.
  • the secondary conveyors 12 are controlled to be driven at a speed of 0.152 m / s for example. This command has the effect of advancing the foot of the stack of items to pack against the unstacking plate.
  • the belt conveyor 2 and the pallet 4 are controlled by the states of the sensors 22 and 23 which are combined according to the OR logic function. For example, if the sensor 22 is in an obscured state "1" then the belt conveyor 2 and the pallet 4 are not controlled. They are stopped which is indicated by the value "0".
  • This example corresponds to lines 6 and 7 of the plastic mode on the figure 6 . It is understood that, in this case the items constituting the stack are not enough inclined backwards. It is therefore necessary to empty the stack by unstacking to obtain the appropriate inclination. In the example corresponding to the third line, the sensors 22 and 23 are not obscured, the inclination of the stack is therefore too important.
  • the unit 13 controls the belt conveyor 2 and the pallet for example at a speed of 0.096 m / s.
  • the belt conveyor 2 and the pallet 4 are controlled by the states of the sensors 21 and 23 which are combined according to the logic function AND. For example, if the sensors 21 and 23 are in a hidden state "1" then the belt conveyor 2 and the pallet 4 are not controlled. They are stopped which is indicated by the value "0". This example corresponds to lines 6 and 7 of the open mode on the figure 6 . It is understood that, in this case, the stack of mail is straight and packed against the unstacking plate to prevent the deterioration of shipments.
  • the belt conveyor 2 and the pallet 4 are controlled by the states of the sensors 21 and 23 which are combined according to the OR logic function. For example, if the sensor 23 is in a hidden state "1" then the belt conveyor 2 and the pallet 4 are not controlled. They are stopped which is indicated by the value "0". This example corresponds to lines 6 and 7 of the open mode on the figure 6 . It is understood that, in this case, the stack of mail is sufficiently inclined for unstacking without risk of deterioration and jamming.
  • the unit 13 controls, at step 35, the signals S supplied by the sensors to the control unit 13 to determine whether the current send is now adequately present according to the selected mode.
  • steps 34 and 35 can be performed almost simultaneously.
  • step 35 the signals S of the sensors are indicative of an adequate presentation of the current item to be unstacked and that one is in the time window T compatible with a constant pitch between consecutive items at the output of the unstacking device, then the control unit 13 continues the process in step 36 by controlling the blow guns and operating the perforated strips 9 and the suction nozzles. The process then loops to step 31 to determine the category of the next mail item. The category of the next transmission is stored in the memory 19 and access to this memory 19 to select the appropriate mode as described above.
  • step 35 if the signals S of the sensors are indicative of an inadequate presentation of the current mail item to be unstacked and the selected mode is open or heterogeneous then the process loops in step 34.
  • the process loops in step 34.
  • steps 34 and 35 are repeated as many times as necessary for the open and heterogeneous sendings until an adequate presentation of the current mail item to be popped up in the time window T, but it is preferable that beyond a certain correction time without obtaining an adequate presentation, an alarm is triggered to prevent the need for manual intervention.
  • the mode selection can be provided to be performed through a software HMI connected to the unstacker via an Ethernet connection for example.
  • the operator can then intervene by dynamically selecting one of the 3 available modes or activate the automatic mode change.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sorting Of Articles (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Die Bonding (AREA)
  • De-Stacking Of Articles (AREA)

Claims (8)

  1. Abstapelvorrichtung für postalische Sendungen, umfassend ein motorisiertes Versorgungsmagazin (1) zum Verlagern der Sendungen (3) im Stapel auf Kante gemäß einer bestimmten Richtung (6) zu einem Abstapelkopf (5), der in der Lage ist, eine erste Sendung vom dem Stapel abzutrennen und sie in eine zu der Verlagerungsrichtung des Sendungsstapels quer verlaufende Richtung (8) mitzunehmen,
    dadurch gekennzeichnet,
    dass sie wenigstens einen Materialsensor (28, 29), der in der Lage ist, ein die Gegenwart wenigstens eines bestimmten Materials in einer laufenden Sendung anzeigendes Signal zu liefern, und eine Steuereinheit (13), die in der Lage ist, das Versorgungsmagazin und den Abstapelkopf gemäß mehrerer der Gegenwart oder der Abwesenheit des (oder der) Materials(ien) in den abzustapelnden Sendungen spezifischer Funktionsmodi zu steuern, umfasst, wobei die Steuereinheit ausgebildet ist zum Auswählen eines Funktionsmodus ausgewählt aus den mehreren Funktionsmodi in Abhängigkeit des von dem Sensor gelieferten Signals.
  2. Abstapelvorrichtung nach Anspruch 1, umfassend:
    - einen ersten Sensor (28), der in der Lage ist, ein erstes Signal (S) als Angabe dafür, dass eine laufende Sendung des Stapels einen Umschlag aus Kunststoffmaterial aufweist, zu liefern;
    - einen zweiten Sensor (29), der in der Lage ist, ein zweites Signal (S) als Angabe dafür, dass die laufende Sendung ein metallisches Material umfasst, zu liefern; und
    - eine Steuereinheit (13), die in Reaktion auf die beiden Signale einen Funktionsmodus unter zumindest drei Funktionsmodi bestimmt, um die Funktion des Versorgungsmagazins und des Abstapelkopfes zu steuern, wobei diese drei Funktionsmodi umfassen: a) einen ersten Funktionsmodus, der als "Kunststoffmodus" bezeichnet wird, wonach die Steuereinheit das Versorgungsmagazin und den Abstapelkopf zwingt, derart zu funktionieren, dass eine bestimmte Anzahl von Sendungen, die dem Abstapelkopf gegenüber liegen, unter einer Neigung von ungefähr 15° nach hinten in Bezug auf den Abstapelkopf vorgeführt werden; b) einen zweiten Funktionsmodus, der als "offener Modus" bezeichnet wird, wonach die Steuereinheit das Versorgungsmagazin und den Abstapelkopf zwingt, derart zu funktionieren, dass eine bestimmte Anzahl Sendungen, die dem Abstapelkopf gegenüber liegen, im Wesentlichen gerade parallel zu dem Abstapelkopf vorgeführt werden; und c) einen dritten Funktionsmodus, der als "heterogener Modus" bezeichnet wird, wonach die Steuereinheit das Versorgungsmagazin und den Abstapelfkopf zwingt, derart zu funktionieren, dass eine bestimmte Anzahl Sendungen, die dem Abstapelkopf gegenüber liegen, in einer Zwischenposition vorgeführt werden, die sich zwischen der geneigten Position des ersten Funktionsmodus und der geraden Position des zweiten Funktionsmodus befindet.
  3. Abstapelvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie ferner wenigstens ein Blasorgan (24, 25, 26) umfasst, das angeordnet ist, um einen Luststrom auf die dem Abstapelkopf gegenüberliegenden Sendungen zu senden, und bei der die Steuereinheit wenigstens drei Sätze von Steuerparametern umfasst, um das Blasorgan nach einem der ersten, zweiten oder dritten Funktionsmodi zu steuern.
  4. Abstapelvorrichtung nach Anspruch 3, bei der das Blasorgan ein erstes Blaselement (24), das zwischen dem Versorgungsmagazin und dem Abstapelkopf derart angeordnet ist, dass es einen im Wesentlichen vertikalen und von unten nach oben gerichteten Luftfluss aussendet, ein zweites Blaselement (25), das dem Abstapelkopf nachgelagert in Bezug auf die Querrichtung derart angeordnet ist, dass es einen im Wesentlichen vertikalen und von unten nach oben gerichteten Luftfluss aussendet, und ein drittes Blaselement (26), das dem Abstapelkopf nachgelagert in Bezug auf die Querrichtung derart angeordnet ist, dass es einen im Wesentlichen horizontalen und entgegengesetzt zu der Querrichtung gerichteten Luftfluss aussendet, umfasst.
  5. Vorrichtung nach einem der Ansprüche 2 bis 4, bei der der Abstapelkopf ein motorisiertes perforiertes Band (9) mit veränderlicher Geschwindigkeit, welches von der Steuereinheit (13) gesteuert wird, umfasst, und bei der die Steuereinheit wenigstens drei Sätze von Geschwindigkeitsprofilen zur Steuerung der Motorisierung des Abstapelkopfes gemäß einem der ersten, zweiten oder dritten Funktionsmodi umfasst.
  6. Abstapelvorrichtung für flache Gegenstände nach einem der vorherigen Ansprüche, bei dem der Sensor (28) ein Glanzsensor ist.
  7. Abstapelvorrichtung für flache Gegenstände nach einem der vorherigen Ansprüche, bei dem ein Sensor (29) aus einem induktiven Sensor besteht.
  8. Maschine zur Sortierung postalischer Sendungen, die als "große Formate" bezeichnet werden, dadurch gekennzeichnet, dass sie eine Abstapelvorrichtung nach einem der Ansprüche 1 bis 7 umfasst.
EP08864676A 2007-12-20 2008-12-02 Vorrichtung zur entstapelung multimodaler postsendungen Not-in-force EP2222586B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0760097A FR2925474B1 (fr) 2007-12-20 2007-12-20 Dispositif de depilage d'envois postaux multi-modes
PCT/FR2008/052182 WO2009080929A2 (fr) 2007-12-20 2008-12-02 Dispositif de dépilage d'envois postaux multi-modes

Publications (2)

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EP2222586A2 EP2222586A2 (de) 2010-09-01
EP2222586B1 true EP2222586B1 (de) 2011-05-18

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EP (1) EP2222586B1 (de)
JP (1) JP5376537B2 (de)
AT (1) ATE509872T1 (de)
ES (1) ES2363597T3 (de)
FR (1) FR2925474B1 (de)
PT (1) PT2222586E (de)
WO (1) WO2009080929A2 (de)

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ITTO20120276A1 (it) * 2012-03-27 2013-09-28 Selex Elsag Spa Impilatore per una macchina di smistamento di articoli postali, e macchina di smistamento provvista di tale impilatore
JP2014080263A (ja) * 2012-10-15 2014-05-08 Toshiba Corp 紙葉類取り出し装置
EP2969267B1 (de) * 2013-03-12 2018-08-15 United States Postal Service System und verfahren zur stapelverwaltung eines automatischen zuführers
US9044783B2 (en) 2013-03-12 2015-06-02 The United States Postal Service System and method of unloading a container of items
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Publication number Publication date
JP5376537B2 (ja) 2013-12-25
PT2222586E (pt) 2011-07-18
ES2363597T3 (es) 2011-08-10
WO2009080929A3 (fr) 2009-08-20
ATE509872T1 (de) 2011-06-15
FR2925474A1 (fr) 2009-06-26
US8235377B2 (en) 2012-08-07
FR2925474B1 (fr) 2009-11-27
JP2011506092A (ja) 2011-03-03
WO2009080929A2 (fr) 2009-07-02
EP2222586A2 (de) 2010-09-01
US20100329833A1 (en) 2010-12-30

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