EP0868227A1 - Device and process for intermediate stacking of letters - Google Patents

Device and process for intermediate stacking of letters

Info

Publication number
EP0868227A1
EP0868227A1 EP96943994A EP96943994A EP0868227A1 EP 0868227 A1 EP0868227 A1 EP 0868227A1 EP 96943994 A EP96943994 A EP 96943994A EP 96943994 A EP96943994 A EP 96943994A EP 0868227 A1 EP0868227 A1 EP 0868227A1
Authority
EP
European Patent Office
Prior art keywords
stacking
stack
lever
roller
levers
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
EP96943994A
Other languages
German (de)
French (fr)
Other versions
EP0868227B1 (en
Inventor
Werner Frank
Holger Schererz
Gerhard Obier
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 AG
Original Assignee
Siemens 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 AG filed Critical Siemens AG
Publication of EP0868227A1 publication Critical patent/EP0868227A1/en
Application granted granted Critical
Publication of EP0868227B1 publication Critical patent/EP0868227B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3072—Arrangements for removing completed piles by moving a surface supporting the pile of articles on edge, e.g. by using belts or carriages
    • 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
    • B07C1/025—Devices for the temporary stacking of objects provided with a stacking and destacking device (interstack 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
    • 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
    • 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
    • B65H83/00—Combinations of piling and depiling operations, e.g. performed simultaneously, of interest apart from the single operation of piling or depiling as such
    • B65H83/02—Combinations of piling and depiling operations, e.g. performed simultaneously, of interest apart from the single operation of piling or depiling as such performed on the same pile or stack
    • 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4226—Delivering, advancing piles
    • B65H2301/42265—Delivering, advancing piles by moving the surface supporting the pile of articles on edge, e.g. conveyor or carriage
    • 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
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/40—Movement
    • 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
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • 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 apparatus and a method for intermediate stacking of mail items, in particular in letter processing systems.
  • Intermediate stacker z. B used in letter sorting systems as a link between coarse sorting lines and fine sorting machines.
  • the intermediate stacker buffers the irregularly arriving mail items so that the fine sorting machine can be loaded evenly.
  • the individual mail items to be stacked are clamped between a conveyor belt and a rear belt in the vicinity of the stacking location at which the mail item stack already exists or is formed by the mail items to be stacked.
  • the stack is formed, are that broadcasts individually one after the other ⁇ with its front edge up to a stacking wall conveyed.
  • the pelwand Sta ⁇ Before ⁇ derband from the broadcast and the program moves on ⁇ due to their inertia along a Leitzauns further direction at a certain distance from the stacking wall.
  • the consignment is conveyed into the space between the stack of consignments and the stacking roller by a rotating stacking roller, which is driven, for example, by the rear belt, and is conveyed on to the stacking wall.
  • the lower edge of the mail items of the mail item stack stands on an underfloor belt transverse to its direction of movement, which can be moved along the stack wall.
  • a separating device is provided, which can successively pull the mailings off the stack from the stack of mailpieces for further processing.
  • the underfloor belt is moved in the direction of the separating device in such a way that the stack lies against the separating device in such a way that the consignment that is closest to the separating device can be removed.
  • the stacking roll In the stacking area, the stacking roll must be brought into such a position that the items to be stacked between the stacking roll and the stack can be correctly transported to the stacking wall.
  • the movement of the stacking trolley with the stacking roller in the direction of the separating device takes place by mechanical coupling of the stacking trolley to the underfloor belt.
  • the underfloor belt and thus the stacking trolley with the stacking roller are moved in the direction of the separating device.
  • a three-phase motor with an electromagnetic clutch is provided, which moves the stacking trolley with the stacking roller along the underfloor belt in the opposite direction to the pickup roller depending on the item to be stacked.
  • a lever is placed near the stacking roller and the stack of mail presses on it.
  • the lever actuates a proximity sensor, which emits a signal for switching the clutch and thus a movement of the stacking trolley to the rear, that is to say in the direction away from the take-off roller, as soon as a certain minimum pressure acts on the lever.
  • the coupling is released again and the stacking trolley remains in the position it has now assumed.
  • the object of the present invention is therefore to ensure that the intermediate stacker functions properly even in the case of mail items of uneven thickness or particularly heavy mail items. This object is achieved by an intermediate stacker with the features of claim 1.
  • the intermediate stacker has a stacking roller, a stacking trolley, an underfloor belt, a separating device, a pressure measuring device in the vicinity of the stacking roller for measuring the pressure of the stack against the pressure measuring device and a device for detecting the inclined positions of the stack of items.
  • the stacking roller is arranged on the stacking trolley.
  • the stacking trolley can be moved along the underfloor belt by a drive.
  • the separating device is arranged at one end of the underfloor belt.
  • the mail items to be stacked are successively conveyed between the stacking roll and the mail items already stacked by the stacking roll rotating about their axis up to a stacking wall and are then on the underfloor belt transverse to its direction of movement.
  • the separation device at the other end of the stack can pull off the consignment that is adjacent to it and thus reduce the stack of consignments again.
  • the stacking mail items increase the pressure of the stack on the pressure measuring device, which is arranged in the vicinity of the stacking roller.
  • Deducted mail items and thus a movement of the underfloor belt in the direction of the take-off roller reduce the pressure on the pressure measuring device.
  • the stacking trolley is moved until the optimum stacking pressure is reached for stacking.
  • the device for detecting inclined positions of the stack of mail monitors the stack of mail. If it reports an inclined position, an electronic control circuit controls the stacking trolley and / or the underfloor belt so that the inclined position is eliminated. Until the inclination, the information of the pressure measuring device is not taken into account.
  • the stack With an inclined position to the front, i. H. that the mail items are further away from the stacking roll with their top edge than with their bottom edge, the stack is preferably moved forwards by a brief movement of the underfloor belt, ie in the direction
  • the stack is preferably erected again by moving the underfloor belt and the stacking carriage to the front.
  • the stacking trolley travels forwards and backwards as a function of the pressure measuring device, provided that no inclination is reported.
  • the device for recognizing the inclined position from two levers lying one above the other, which are each printed against the stack of mail items and each actuating a switch, the switching points of the switches being on a perpendicular to the underfloor band level and an inclined position being recognized if the switches have unequal switch positions.
  • a third lever as part of the pressure measuring device in the same vertical position as the two levers of the particularly preferred device for detecting the inclined positions and to equip the third lever with a driver stop and the other two levers with one
  • the two levers can be used to recognize inclined positions, on the other hand, they can also determine the pressure at the same time: if one of the two levers is subjected to a greater load than the third lever, it transfers the pressure via its drivers to the driver stop of the third lever and thus deflects it so that the lever which is most heavily loaded is decisive for the deflection of the third lever.
  • an analog sensor to measure the deflection of the third lever, since the travel speed can then be particularly advantageously adapted as a function of the position of the third lever for optimal stacking.
  • FIG. 1 shows the top view of a known stacking trolley with a stacking roller and a particularly preferred feeler lever arrangement
  • Fig. 3 is a sketch illustrating a particularly preferred together ⁇ men Wegs the sensing lever assembly
  • Fig. 5 is a sketch to show the inclined stack position to the front.
  • the mail items SE are transported between the front belt V and the rear belt H and are clamped along the guide rollers FR 2 , FR3, FR 4 , the guide fence LZ1, LZ2 supporting the guide.
  • the front belt V is steered around the guide roller FR4, while the rear belt H is guided further in the direction of the stacking roller SR.
  • a shipment that was located between the front belt V and the rear belt H is further requested from the guide roller FR4 due to its inertia in the direction of the stacking roller SR, is detected by the stacking roller SR and between the stacking roller SR and the stack of items ST up to the stacking wall SW requested.
  • a stacking spiral SP advantageously detects the consignment SE as it passes and at the same time presses it away from the rear belt H in the direction of the mailing stack ST.
  • the more mail items are stacked the more the stacking trolley SW must be moved away from the take-off roller AR.
  • the stacking carriage SW must be moved towards the take-off roller AR so that the stacking pressure is as optimal as possible for the subsequent consignments SE to be stacked.
  • the underfloor belt ÜB is moved with the motor Mi so that the consignment SE closest to the take-off roll can be pulled off the take-off roll.
  • the control of the motor Mi is taken over by the electronic circuit ES.
  • the control of the stacking cart SW is described below:
  • a particularly preferred feeler lever arrangement FH has three levers FHi, FH ⁇ , FH3, which lie one above the other in the same vertical position and are each pressed by the springs Fi, F 2 , F3 against the stack of mail items ST.
  • the levers FHi and FH 2 on the one hand operate the switches Si and S2, on the other hand, depending on their position, they can press their driver MI1 or MI2 onto the driver stop MA of the lever FH3 and thus also deflect the lever FH3.
  • the lever FH3 has, at its end opposite the stack of mail items, the magnet MG, which is guided past a Hall sensor HS.
  • the lever FH3 is deflected onto one of the levers FHi, FH2, FH3 and the magnet MG is thus brought into a specific position with respect to the Hall sensor HS.
  • the signal of the Hall sensor is converted into corresponding voltages in the electronic circuit ES for the direct current motor drive M 2 , which drives the stacking carriage SW via a toothed element Z.
  • the stacking trolley is moved faster, slower or not at all.
  • the switching points of switches Si and S2 are on one level to the underfloor band level. If the upper switch S2 reports "on ' and the lower switch Si ' off, this means an inclined position to the rear (. See Fig. 4).
  • the stack In the case of an inclined position to the rear, the stack is preferably erected again to the front by a brief movement of the underfloor belt ÜB and the stacking carriage SW. In the case of an inclined position to the front, the stack ST is preferably erected to the front by moving the underfloor belt.
  • the signals from the Hall sensor HS have no effect on the drive of the motor M2 and thus the movement of the stacking trolley SW.
  • the invention is easily modified.
  • a pressure measuring device and a device for detecting the inclined position can be used.
  • B. can be realized by two in the vicinity of the stacking roll transversely to the direction of movement of the underfloor belt ÜB superimposed light barriers and an inclined position is then recognized when the light barriers report different states.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Sorting Of Articles (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

A device is proposed for intermediate stacking of letters (SE) in particular in letter processing facilities with a stacking roller (SR), stacking carriage (SW), underlying belt (UB) and a separation device. The stacking roller (SR) is mounted on the stacking carriage (SW) and a pressure gauge is provided in the vicinity of the stacking roller to measure the pressure of the stack against the pressure gauge. It is proposed that a device should be provided for detecting possible slants in the letter stack (ST); that where such a slant is detected, the stacking carriage (SW) and/or underlying belt (UB) are made to move until the slant is eliminated; that the stacking carriage (SW) should be displaced along the underlying belt (UB) until the letter stack (ST) exerts a certain pressure on the pressure gauge provided that the device does not report the presence of a slant.

Description

Vorr i c htun g und Verfahren zum 1 w i sehen Stapel n__von_Sen dun gen Device and method for 1 w i see stack n__von_Sen dun gen
Besen rei bu n gBroom cleaning
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zum Zwischenstapeln von Sendungen, insbesondere in Briefverarbei¬ tungssystemen.The present invention relates to an apparatus and a method for intermediate stacking of mail items, in particular in letter processing systems.
Zwischenstapler werden z. B. in Briefsortieranlagen als Bindeglied zwi¬ schen Grobsortierfachstrecken und Feinsortiermaschinen eingesetzt. Der Zwischenstapler puffert dabei die unregelmäßig ankommenden Sendungen so, daß die Feinsortiermaschine gleichmäßig belastet werden kann.Intermediate stacker z. B. used in letter sorting systems as a link between coarse sorting lines and fine sorting machines. The intermediate stacker buffers the irregularly arriving mail items so that the fine sorting machine can be loaded evenly.
Bei einem bekannten Zwischenstapler werden die einzelnen zu stapelnden Sendungen zwischen einem Forder- und einem Hinterband eingeklemmt in die Nähe des Stapelortes, an dem der Sendungsstapel schon vorhanden ist oder durch die zu stapelnden Sendungen gebildet wird, gefördert. Der Stapel wird dadurch gebildet, daß die Sendungen einzeln nachein¬ ander mit ihrer Vorderkante bis zu einer Stapelwand befördert werden. Hierzu wird in einer gewissen Entfernung von der Stapelwand das Vor¬ derband von der Sendung entfernt und die Sendung bewegt sich auf¬ grund ihrer Masseträgheit entlang eines Leitzauns weiter Richtung Sta¬ pelwand. Schließlich wird die Sendung durch eine sich drehende Stapel¬ rolle, die beispielsweise durch das Hinterband angetrieben wird, in den Raum zwischen dem Sendungsstapel und der Stapelrolle gefördert und bis zur Stapelwand weiterbefördert.In a known intermediate stacker, the individual mail items to be stacked are clamped between a conveyor belt and a rear belt in the vicinity of the stacking location at which the mail item stack already exists or is formed by the mail items to be stacked. The stack is formed, are that broadcasts individually one after the other ¬ with its front edge up to a stacking wall conveyed. For this purpose, the pelwand Sta¬ Before ¬ derband from the broadcast and the program moves on ¬ due to their inertia along a Leitzauns further direction at a certain distance from the stacking wall. Finally, the consignment is conveyed into the space between the stack of consignments and the stacking roller by a rotating stacking roller, which is driven, for example, by the rear belt, and is conveyed on to the stacking wall.
Die Sendungen des Sendungsstapels stehen mit ihrer Unterkante auf ei¬ nem Unterflurband quer zu dessen Bewegungsrichtung das längs der Stapelwand bewegt werden kann. An der der Stapelrolle entgegengesetzten Seite des Stapels ist eine Vereinzelungsvorrichtung vorhanden, die die Sendungen des Stapels nacheinander von dem Sendungsstapel zur weiteren Bearbeitung abziehen kann.The lower edge of the mail items of the mail item stack stands on an underfloor belt transverse to its direction of movement, which can be moved along the stack wall. On the side of the stack opposite the stacking roll, a separating device is provided, which can successively pull the mailings off the stack from the stack of mailpieces for further processing.
ORIGINAL UNTERLAGEN Das Unterflurband wird so in Richtung der Vereinzelungsvorrichtung bewegt, daß der Stapel so an der Vereinzelungsvornchtung anliegt, daß die Sendung, die der Vereinzelungsvorrichtung am nächsten ist, abgezo¬ gen werden kann. Im Einstapelbereich muß die Stapeirolle in eine der¬ artige Position gebracht werden, daß die einzustapelnden Sendungen zwischen der Stapelrolle und dem Stapel einwandfrei bis zur Stapelwand befordert werden können.ORIGINAL DOCUMENTS The underfloor belt is moved in the direction of the separating device in such a way that the stack lies against the separating device in such a way that the consignment that is closest to the separating device can be removed. In the stacking area, the stacking roll must be brought into such a position that the items to be stacked between the stacking roll and the stack can be correctly transported to the stacking wall.
Bei dem bisher bekannten Zwischenstapler erfolgt die Bewegung des Stapelwagens mit der Stapelrolle in Richtung Vereinzelungsvorrichtung durch mechanische Kopplung des Stapelwagens mit dem Unterflurband. So wird beim Abzug von Sendungen durch die Vereinzelungsvorrichtung das Unterflurband und damit der Stapelwagen mit der Stapelrolle in Richtung zur Vereinzelungsvornchtung bewegt.In the previously known intermediate stacker, the movement of the stacking trolley with the stacking roller in the direction of the separating device takes place by mechanical coupling of the stacking trolley to the underfloor belt. Thus, when the consignment device is withdrawn, the underfloor belt and thus the stacking trolley with the stacking roller are moved in the direction of the separating device.
Zum Einstapeln der Sendungen ist ein Drehstrommotor mit elektromagnetischer Kupplung vorhanden, der den Stapelwagen mit der Stapelrolle in Abhängigkeit der einzustapelnden Sendung entlang des Unterflurbands in die der Abzugsrolle entgegengesetzten Richtung bewegt. In der Nähe der Stapelrolle ist ein Hebel angeordnet, auf den der Sendungsstapel drückt. Der Hebel betätigt einen Näherungssensor, der ein Signal zum Schalten der Kupplung und damit ein Verfahren des Stapelwagens nach hinten, also in Richtung von der Abzugsrolle weg, abgibt, sobald ein bestimmter Mindestdruck auf den Hebel wirkt. Sobald ein bestimmter Minimaldruck unterschritten wird, wird die Kupplung wieder gelöst und der Stapelwagen verbleibt auf der nun eingenommenen Position.For stacking the items, a three-phase motor with an electromagnetic clutch is provided, which moves the stacking trolley with the stacking roller along the underfloor belt in the opposite direction to the pickup roller depending on the item to be stacked. A lever is placed near the stacking roller and the stack of mail presses on it. The lever actuates a proximity sensor, which emits a signal for switching the clutch and thus a movement of the stacking trolley to the rear, that is to say in the direction away from the take-off roller, as soon as a certain minimum pressure acts on the lever. As soon as the pressure drops below a certain minimum, the coupling is released again and the stacking trolley remains in the position it has now assumed.
Nachteilig bei diesem Zwischenstapler ist es, daß bei ungleichmäßig dicken Sendungen oder bei besonders schweren hohen Sendungen der Sendungsstapel umkippen kann und damit die Funktion des Zwischen¬ staplers ausfällt.The disadvantage of this intermediate stacking is that when unevenly thick broadcast or in particularly severe high shipments of mail stack may fall over and thus the function fails Between ¬ staplers.
Aufgabe der vorliegenden Erfindung ist es daher, eine einwandfreie Funktion des Zwischenstaplers auch bei ungleichmäßig dicken Sendungen oder bei besonders schweren hohen Sendungen sicherzustellen. Diese Aufgabe wird erfindungsgemaß durch einen Zwischenstapler mit den Merkmalen des Anspruchs 1 gelost.The object of the present invention is therefore to ensure that the intermediate stacker functions properly even in the case of mail items of uneven thickness or particularly heavy mail items. This object is achieved by an intermediate stacker with the features of claim 1.
Vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung sind den Unteranspruchen zu entnehmen.Advantageous developments and refinements of the invention can be found in the subclaims.
Der erfindungsgemäße Zwischenstapler weist eine Stapelrolle, einen Sta¬ pelwagen, ein Unterflurband, eine Vereinzelungsvornchtung, eine Druckmeßvomchtung in der Nahe der Stapelrolle zum Messen des Drucks des Stapels gegen die Druckmeßvomchtung und eine Vorrichtung zum Erkennen der Schräglagen des Sendungsstapels auf.The intermediate stacker according to the invention has a stacking roller, a stacking trolley, an underfloor belt, a separating device, a pressure measuring device in the vicinity of the stacking roller for measuring the pressure of the stack against the pressure measuring device and a device for detecting the inclined positions of the stack of items.
Die Stapelrolle ist auf dem Stapelwagen angeordnet. Der Stapelwagen ist entlang des Unterflurbands durch einen Antrieb bewegbar. An einem Ende des Unterflurbandes ist die Vereinzelungsvornchtung angeordnet. Die zu stapelnden Sendungen werden nacheinander zwischen der Stapelrolle und den bereits angestapelnden Sendungen durch die sich um ihre Achse drehende Stapelrolle bis zu einer Stapelwand befördert und stehen dann auf dem Unterflurband quer zu dessen Bewegungsrichtung.The stacking roller is arranged on the stacking trolley. The stacking trolley can be moved along the underfloor belt by a drive. The separating device is arranged at one end of the underfloor belt. The mail items to be stacked are successively conveyed between the stacking roll and the mail items already stacked by the stacking roll rotating about their axis up to a stacking wall and are then on the underfloor belt transverse to its direction of movement.
Die Vereinzelungsvornchtung am anderen Ende des Stapels kann die jeweils an ihr anliegende Sendung abziehen und so den Sendungsstapel wieder verkleinern. Der dort entstandene Zwischenraum wird durch ein Verfahren des Unterflurbandes in Richtung derThe separation device at the other end of the stack can pull off the consignment that is adjacent to it and thus reduce the stack of consignments again. The space created there is moved in the direction of the
Vereinzelungsvorrichtung beseitigt. Die eingestapelnden Sendungen erhohen den Druck des Stapels auf die Druckmeßvomchtung, die in der Nahe der Stapelrolle angeordnet ist.Separating device eliminated. The stacking mail items increase the pressure of the stack on the pressure measuring device, which is arranged in the vicinity of the stacking roller.
Abgezogene Sendungen und damit ein Verfahren des Unterflurbandes in Richtung der Abzugsrolle verringern den Druck auf die Druckmeßvor- πchtung. Der Stapelwagen wird jeweils so weit verfahren, bis der zum Einstapeln optimale Stapeldruck erreicht ist.Deducted mail items and thus a movement of the underfloor belt in the direction of the take-off roller reduce the pressure on the pressure measuring device. The stacking trolley is moved until the optimum stacking pressure is reached for stacking.
Die Vorrichtung zum Erkennen von Schräglagen des Sendungsstapels überwacht den Sendungsstapel. Sofern sie eine Schräglage meldet, steuert eine elektronische Steuerschaltung den Stapelwagen und/oder das Unterflurband so, daß die Schräglage beseitigt wird. Bis zur Besei- tigung der Schräglage werden die Informationen der Druckmeßvomch¬ tung nicht beachtet.The device for detecting inclined positions of the stack of mail monitors the stack of mail. If it reports an inclined position, an electronic control circuit controls the stacking trolley and / or the underfloor belt so that the inclined position is eliminated. Until the inclination, the information of the pressure measuring device is not taken into account.
Bei einer Schräglage nach vorn, d. h. daß die Sendungen mit ihrer Oberkante weiter von der Stapelrolle entfernt sind als mit ihrer Unterkante, wird der Stapel vorzugsweise durch kurzzeitiges Verfahren des Unterflurbands nach vorn, also in RichtungWith an inclined position to the front, i. H. that the mail items are further away from the stacking roll with their top edge than with their bottom edge, the stack is preferably moved forwards by a brief movement of the underfloor belt, ie in the direction
Vereinzelungsvorrichtung, wieder aufgerichtet. Bei einer Schräglage nach hinten wird der Stapel vorzugsweise durch ein Verfahren des Unterflurbandes und des Stapelwagens nach vorn wieder aufgerichtet. Der Stapelwagen fahrt erfindungsgemaß also nach vorn und nach hinten in Abhängigkeit der Druckmeßvomchtung, sofern keine Schräglage gemeldet ist.Separating device, erected again. In the case of an inclined position to the rear, the stack is preferably erected again by moving the underfloor belt and the stacking carriage to the front. According to the invention, the stacking trolley travels forwards and backwards as a function of the pressure measuring device, provided that no inclination is reported.
Besonders vorteilhaft ist es, die Vorrichtung zum Erkennen der Schräglage aus zwei überemanderliegenden Hebeln aufzubauen, die je¬ weils gegen den Sendungsstapel gedruckt werden und die jeweils einen Schalter betätigen, wobei die Schaltpunkte der Schalter auf einer Senk¬ rechten zur Unterflurbandebene hegen und eine Schräglage erkannt wird, wenn die Schalter ungleiche Schalterstellungen aufweisen.It is particularly advantageous to construct the device for recognizing the inclined position from two levers lying one above the other, which are each printed against the stack of mail items and each actuating a switch, the switching points of the switches being on a perpendicular to the underfloor band level and an inclined position being recognized if the switches have unequal switch positions.
Weiterhin ist es besonders vorteilhaft, einen dritten Hebel als Teil der Druckmeßvomchtung in der gleichen vertikalen Lage wie die beiden He¬ bel der besonders bevorzugten Vorrichtung zum Erkennen der Schräglagen vorzusehen und den dritten Hebel mit einem Mitnehmeran¬ schlag auszustatten und die beiden anderen Hebel mit einem Mitnehmer zu versehen und dem dritten Hebel die gleiche Form wie den beiden an¬ deren Hebeln zu geben mit Ausnahme des Mitnehmeranschlages und der Mitnehmer. So können die beiden Hebel zum einen zum Erkennen von Schräglagen eingesetzt werden, zum anderen können sie gleichzeitig den Druck mitbestimmen: Sofern einer der beiden Hebel starker belastet wird als der dritte Hebel, gibt er den Druck über seine Mitnehmer auf den Mitnehmeranschlag des dritten Hebels weiter und lenkt diesen somit aus, so daß derjenige der Hebel, der am stärksten belastet wird, für den Ausschlag des dritten Hebels maßgeblich ist. Weiterhin ist es besonders vorteilhaft, zum Messen des Ausschlags des dritten Hebels einen Analogsensor zu verwenden, da dann besonders vorteilhafterweise die Verfahrgeschwindigkeit in Abhängigkeit der Stel¬ lung des dritten Hebels für eine optimale Stapelung angepaßt werden kann.Furthermore, it is particularly advantageous to provide a third lever as part of the pressure measuring device in the same vertical position as the two levers of the particularly preferred device for detecting the inclined positions and to equip the third lever with a driver stop and the other two levers with one To provide drivers and give the third lever the same shape as the two other ¬ their levers with the exception of the driver stop and the driver. On the one hand, the two levers can be used to recognize inclined positions, on the other hand, they can also determine the pressure at the same time: if one of the two levers is subjected to a greater load than the third lever, it transfers the pressure via its drivers to the driver stop of the third lever and thus deflects it so that the lever which is most heavily loaded is decisive for the deflection of the third lever. Furthermore, it is particularly advantageous to use an analog sensor to measure the deflection of the third lever, since the travel speed can then be particularly advantageously adapted as a function of the position of the third lever for optimal stacking.
Schließlich ist es vorteilhaft, als Vereinzelungsvorrichtung eine Abzugs¬ rolle, ein Abzugsband oder mehrere Abzugsbander zu verwenden.Finally, it is advantageous to use a take-off roll, a take-off belt or a plurality of take-off belts as a separating device.
Im folgenden wird die Erfindung anhand der Zeichnungen für ein be¬ sonders bevorzugtes Ausfuhrungsbeispiel naher erläutert.The invention is explained in more detail below with reference to the drawings for a particularly preferred exemplary embodiment.
Es zeigen:Show it:
Fig. 1 die Aufsicht auf einen bekannten Stapelwagen mit Stapelrolle und einer besonders bevorzugten Fühlhebelanordnung;1 shows the top view of a known stacking trolley with a stacking roller and a particularly preferred feeler lever arrangement;
Fig. 2 die Prmzipskizze eines besonders bevorzugten erfindungsgemaßen Zwischenstaplers;2 shows the outline sketch of a particularly preferred intermediate stacker according to the invention;
Fig. 3 eine Skizze zur Darstellung eines besonders bevorzugten Zusam¬ menwirkens der Fühlhebelanordnung;Fig. 3 is a sketch illustrating a particularly preferred together ¬ menwirkens the sensing lever assembly;
Fig. 4eιne Skizze zur Darstellung der Stapelschraglage nach hinten undFig. 4eιne sketch to show the stack inclination to the rear and
Fig. 5 eine Skizze zur Darstellung der Stapelschraglage nach vorn.Fig. 5 is a sketch to show the inclined stack position to the front.
Die Sendungen SE werden stehen zwischen dem vorderen Band V und dem hinteren Band H eingeklemmt entlang der Fuhrungsrollen FR2, FR3, FR4 befördert, wobei die Leitzaune LZ1, LZ2 die Fuhrung unterstutzen. Das vordere Band V wird um die Führungsrolle FR4 gelenkt, wahrend das hintere Band H weiter in Richtung der Stapelrolle SR gefuhrt wird. Eine Sendung, die sich zwischen dem vorderen Band V und dem hinteren Band H befunden hat, wird ab der Fuhrungsrolle FR4 durch ihre Massenträgheit Richtung Stapelroiie SR weiter befordert, von der Stapelrolle SR erfaßt und zwischen der Stapelrolle SR und dem Sendungsstapel ST bis zur Stapelwand SW befordert.The mail items SE are transported between the front belt V and the rear belt H and are clamped along the guide rollers FR 2 , FR3, FR 4 , the guide fence LZ1, LZ2 supporting the guide. The front belt V is steered around the guide roller FR4, while the rear belt H is guided further in the direction of the stacking roller SR. A shipment that was located between the front belt V and the rear belt H is further requested from the guide roller FR4 due to its inertia in the direction of the stacking roller SR, is detected by the stacking roller SR and between the stacking roller SR and the stack of items ST up to the stacking wall SW requested.
Eine Stapelspirale SP erfaßt vorteilhafterweise beim Vorbeilauf die Sen¬ dung SE und drückt diese gleichzeitig von dem hinteren Band H weg in Richtung Sendungsstapel ST. Je mehr Sendungen eingestapelt werden, um so mehr muß der Stapelwagen SW von der Abzugsrolle AR weg befordert werden. Je mehr Sendungen abgezogen werden, um so mehr muß der Stapelwagen SW zur Abzugsrolle AR hin befordert werder, damit der Stapeldruck möglichst optimal für die nachfolgenden einzustapelnden Sendungen SE ist. Das Unterflurband ÜB wird mit dem Motor Mi jeweils so verfahren, daß die der Abzugsrolle am nächsten befindliche Sendung SE von der Abzugsrolle abgezogen werden kann. Die Steuerung des Motors Mi wird von der Elektronikschaltung ES übernommen. Die Steuerung des Stapelwagens SW wird nachfolgend beschrieben:A stacking spiral SP advantageously detects the consignment SE as it passes and at the same time presses it away from the rear belt H in the direction of the mailing stack ST. The more mail items are stacked, the more the stacking trolley SW must be moved away from the take-off roller AR. The more shipments are deducted, the more The stacking carriage SW must be moved towards the take-off roller AR so that the stacking pressure is as optimal as possible for the subsequent consignments SE to be stacked. The underfloor belt ÜB is moved with the motor Mi so that the consignment SE closest to the take-off roll can be pulled off the take-off roll. The control of the motor Mi is taken over by the electronic circuit ES. The control of the stacking cart SW is described below:
Eine besonders bevorzugte Fuhlhebelanordnung FH weist drei Hebel FHi, FH∑, FH3 auf, die in gleicher vertikaler Lage übereinander liegen und jeweils von den Federn Fi, F2, F3 gegen den Sendungsstapel ST ge¬ druckt werden. Die Hebel FHi bzw. FH2 betätigen zum einen die Schalter Si bzw. S2, zum anderen können sie je nach Stellung über ihre Mitneh¬ mer MI1 bzw. MI2 auf den Mitnehmeranschlag MA des Hebels FH3 drucken und so den Hebel FH3 mit auslenken. Der Hebel FH3 weist an seinem dem Sendungsstapel entgegengesetzten Ende den Magneten MG auf, der an einem Hall-Sensor HS vorbeigefuhrt wird. Der Hebel FH3 wird nach dem größten Stapeldruck auf einen der Hebel FHi, FH2, FH3 ausgelenkt und so der Magnet MG in eine bestimmte Stellung zu dem Hall-Sensor HS gebracht. Das Signal des Hall-Sensors wird in der Elektronischaltung ES in entsprechende Spannungen umgesetzt für den Gleichstrommotorantπeb M2, der den Stapelwagen SW über einen Zahnπemen Z antreibt. So wird je nach Stapeldruck der Stapelwagen schneller, langsamer oder auch gar nicht bewegt.A particularly preferred feeler lever arrangement FH has three levers FHi, FH∑, FH3, which lie one above the other in the same vertical position and are each pressed by the springs Fi, F 2 , F3 against the stack of mail items ST. The levers FHi and FH 2 on the one hand operate the switches Si and S2, on the other hand, depending on their position, they can press their driver MI1 or MI2 onto the driver stop MA of the lever FH3 and thus also deflect the lever FH3. The lever FH3 has, at its end opposite the stack of mail items, the magnet MG, which is guided past a Hall sensor HS. After the greatest stack pressure, the lever FH3 is deflected onto one of the levers FHi, FH2, FH3 and the magnet MG is thus brought into a specific position with respect to the Hall sensor HS. The signal of the Hall sensor is converted into corresponding voltages in the electronic circuit ES for the direct current motor drive M 2 , which drives the stacking carriage SW via a toothed element Z. Depending on the stack pressure, the stacking trolley is moved faster, slower or not at all.
Die Schaltpunkte der Schalter Si und S2 liegen auf einer Ebene zur Unterflurbandebene. Meldet der obere Schalter S2 "ein' und der untere Schalter Si 'aus , so bedeutet dies eine Schräglage nach hinter (.siehe Fig. 4).The switching points of switches Si and S2 are on one level to the underfloor band level. If the upper switch S2 reports "on ' and the lower switch Si ' off, this means an inclined position to the rear (. See Fig. 4).
Meldet der obere Schalter S2 'aus" und der untere Schalter Si ein , so bedeutet dies eine Schräglage nach vorn (siehe Fig. 5).If the upper switch S2 ' off ' and the lower switch Si registers, this means an inclined position towards the front (see FIG. 5).
Bei einer Schräglage nach hinten wird der Stapel vorzugsweise durch ein kurzzeitiges Verfahren des Unterflurbandes ÜB und des Stapelwagens SW nach vorn wieder aufgerichtet. Bei einer Schräglage nach vorn wird der Stapel ST vorzugsweise durch ein Verfahren des Unterflurbandes nach vorn aufgerichtet. Wahrend einer erkannten Schräglage haben die Signale des Hall-Sensors HS keine Auswirkung auf den Antrieb des Motors M2 und damit die Bewegung des Stapelwagens SW.In the case of an inclined position to the rear, the stack is preferably erected again to the front by a brief movement of the underfloor belt ÜB and the stacking carriage SW. In the case of an inclined position to the front, the stack ST is preferably erected to the front by moving the underfloor belt. During one recognized Oblique position, the signals from the Hall sensor HS have no effect on the drive of the motor M2 and thus the movement of the stacking trolley SW.
Die Erfindung ist leicht abwandelbar. So kann statt der zuvor beschrie¬ benen Fuhlhebelanordnung eine Druckmeßvomchtung und eine Vorrich¬ tung zur Schraglagenerfassung verwendet werden, wobei die Schragla- generfassung z. B. durch zwei in der Nahe der Stapelrolle quer zur Bewegungsrichtung des Unterflurbandes ÜB übereinander hegende Lichtschranken realisiert sein kann und eine Schräglage dann erkannt wird, wenn die Lichtschranken unterschiedliche Zustande melden. The invention is easily modified. Thus, instead of the previously described feeler lever arrangement, a pressure measuring device and a device for detecting the inclined position can be used. B. can be realized by two in the vicinity of the stacking roll transversely to the direction of movement of the underfloor belt ÜB superimposed light barriers and an inclined position is then recognized when the light barriers report different states.

Claims

Patentansprüche claims
1. Vorrichtung zum Zwischenstapeln von Sendungen (SE) insbesondere in Briefbearbeitungsanlagen mit einer Stapelrolle (SR), einem Stapelwagen (SW), einem Unterflurband (ÜB) und einer Vereinzelungsvorrichtung, bei der die Stapelrolle (SR) auf dem Stapelwagen (SW) angeordnet ist und bei der eine Druckme߬ vomchtung in der Nähe der Stapelrolle vorhanden ist, zum Mes¬ sen des Drucks des Stapels gegen die Druckmeßvomchtung, dadurch gekennzeichnet, daß eine Vorrichtung zum Erkennen von möglichen Schräglagen des Sendungsstapels (ST) vorhanden ist, daß bei einer erkannten Schräglage der Stapelwagen (SW) und/oder das Unterflurband (ÜB) Verfahren werden, bis die1. Device for intermediate stacking of mail items (SE) in particular in letter processing systems with a stacking roller (SR), a stacking trolley (SW), an underfloor belt (ÜB) and a separating device in which the stacking roller (SR) is arranged on the stacking trolley (SW) and in which a pressure measuring device is present in the vicinity of the stacking roller, for measuring the pressure of the stack against the pressure measuring device, characterized in that a device for recognizing possible inclined positions of the stack of mail items (ST) is provided, that one is detected The stacking trolley (SW) and / or the underfloor belt (ÜB) process until the
Schräglage beseitigt ist, daß der Stapelwagen (SW) so lange entlang des UnterflurbandesOblique position is eliminated that the stacking trolley (SW) along the underfloor belt for so long
(ÜB) bewegt wird, bis der Sendungsstapel (ST) einen bestimmten(ÜB) is moved until the shipment stack (ST) a certain
Druck auf die Druckmeßvomchtung ausübt, sofern dieExerts pressure on the Druckmeßvomchtung, if the
Vorrichtung keine Schräglage meldet.Device reports no inclination.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Vorrichtung zum Erkennen von möglichen Schräglagen zwei übereinander liegende Hebel (FHi, FH2) aufweist, die gegen den Sendungsstapel (ST) gedrückt werden, daß die Hebel jeweils einen Schalter (Si, S2) betätigen, wobei die Schaltpunkte der Schalter (Si, S2) auf einer Senkrechten zur Unterflurbandebene (ÜB) liegen und eine Schräglage erkannt wird, wenn die Schalter (Si, S2) ungleiche Schalterstellungen aufweisen.2. Device according to claim 1, characterized in that the device for recognizing possible inclinations has two superimposed levers (FHi, FH2) which are pressed against the stack of mail items (ST), that the levers each have a switch (Si, S2) actuate, the switching points of the switches (Si, S2) lying on a perpendicular to the underfloor band plane (ÜB) and an inclined position being recognized when the switches (Si, S2) have unequal switch positions.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die zwei Hebel (FHi, FH2) jeweils einen Mitnehmer (Mit, MI2) aufweisen, daß ein dritter Hebel (FH3) in gleicher vertikaler Lage wie die zwei anderen Hebel (FHi, FH2) angebracht ist, der einen3. Apparatus according to claim 2, characterized in that the two levers (FHi, FH2) each have a driver (Mit, MI2), that a third lever (FH3) in the same vertical position as the two other levers (FHi, FH2) is appropriate, the one
Mitnehmeranschlag (MA) aufweist, daß der dritte Hebel (FH3) mit Ausnahme des MitnehmeranschlagsDriver stop (MA), that the third lever (FH3) with the exception of the driver stop
(MA) und der Mitnehmer (MI1, MI2) die gleiche Form wie cie zwei(MA) and the driver (MI1, MI2) the same shape as the two
Hebel (FHi, FH2) aufweist, daß der dritte Hebel (FH3) Teil der Druckmeßvomchtung αes in der Nähe der Stapelrolle (SR) vorhandenen Drucks gegen αieLever (FHi, FH 2 ) has that the third lever (FH3) part of the Druckmeßvomchtung αes in the vicinity of the stacking roller (SR) existing pressure against αie
Druckmeßvomchtung ist, daß eine Vorrichtung zum Erfassen der Auslenkung des heoelsDruckmeßvomchtung is that a device for detecting the deflection of the heoels
(FH3) vorhanden ist, daß die Mitnehmer (MI1, MI 2) der zwei Hebel (FHi, FH2) gegen den(FH3) is present that the driver (MI1, MI 2) of the two levers (FHi, FH2) against the
Mitnehmeranschlag (MI) des dritten Hebels (FH3) drücken -όnnen.Press driver stop (MI) of the third lever (FH3).
4. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß ein Analogsensor (AS) zum Erfassen des Ausschlags ces Hebels vorhanden ist.4. Device according to one of the preceding claims, characterized in that an analog sensor (AS) for detecting the deflection ces lever is present.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß es sich bei dem Analogsensor (AS) um einen Hallsenso^ handelt.5. The device according to claim 4, characterized in that the analog sensor (AS) is a Hall sensor ^.
6. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß eine Elektronikschaltung (ES) zum Steuern der Geschwindigkeit des Stapelwagens (SW) entlang des Unterflurbands (ÜB) in Abhängigkeit der Stellung des dritten Hebels (FH3) vorhanden ist.6. Device according to one of the preceding claims, characterized in that an electronic circuit (ES) for controlling the speed of the stacking trolley (SW) along the underfloor belt (ÜB) depending on the position of the third lever (FH3) is available.
7. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Vereinzelungsvorrichtung als Abzugsrolle (AR) ausgebildet ist.7. Device according to one of the preceding claims, characterized in that the separating device is designed as a take-off roller (AR).
8. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Vereinzelungsvorrichtung als Abzugsband oder Abzugsbänder ausgebildet ist. 8. Device according to one of claims 1 to 6, characterized in that the separating device is designed as a trigger tape or trigger tapes.
9. Verfahren zum Aufrichten eines Stapels, der sich in einer Vor¬ richtung nach einem der vorstehenden Ansprüche befindet, dadurch gekennzeichnet, daß bei einer Schräglage des Stapels (ST) nach vorn der Stapel (ST) durch kurzzeitiges Verfahren des Unterflurbands (ÜB) nach vorn wieder aufgerichtet wird, daß bei einer Schräglage des Stapels (ST) nach hinten der Stapel (ST) durch Verfahren des Unterflurbands (ÜB) und des Stapelwagens (SW) nach vorn wieder aufgerichtet wird. 9. A method for erecting a stack, which is located in a device according to one of the preceding claims, characterized in that when the stack (ST) is inclined towards the front, the stack (ST) by briefly moving the underfloor belt (ÜB) is erected again at the front so that when the stack (ST) is inclined to the rear, the stack (ST) is erected again by moving the underfloor belt (ÜB) and the stacking carriage (SW) to the front.
EP96943994A 1995-12-19 1996-12-18 Device and process for intermediate stacking of letters Expired - Lifetime EP0868227B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19547292 1995-12-19
DE19547292A DE19547292A1 (en) 1995-12-19 1995-12-19 Device and method for intermediate stacking of mail items
PCT/EP1996/005682 WO1997022425A1 (en) 1995-12-19 1996-12-18 Device and process for intermediate stacking of letters

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EP0868227A1 true EP0868227A1 (en) 1998-10-07
EP0868227B1 EP0868227B1 (en) 1999-08-25

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WO1997022425A1 (en) 1997-06-26
JP3839058B2 (en) 2006-11-01
US5957448A (en) 1999-09-28
EP0868227B1 (en) 1999-08-25
JP2000502023A (en) 2000-02-22
DE59602907D1 (en) 1999-09-30

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