EP1045733A1 - Procédé de commande d'un dispositif servant au retrait d'envois plats d'une pile - Google Patents

Procédé de commande d'un dispositif servant au retrait d'envois plats d'une pile

Info

Publication number
EP1045733A1
EP1045733A1 EP99930887A EP99930887A EP1045733A1 EP 1045733 A1 EP1045733 A1 EP 1045733A1 EP 99930887 A EP99930887 A EP 99930887A EP 99930887 A EP99930887 A EP 99930887A EP 1045733 A1 EP1045733 A1 EP 1045733A1
Authority
EP
European Patent Office
Prior art keywords
sensor
speed
item
take
distance
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
EP99930887A
Other languages
German (de)
English (en)
Other versions
EP1045733B1 (fr
Inventor
Hauke LÜBBEN
Eckehardt Grimm
Frank Gerstenberg
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 EP1045733A1 publication Critical patent/EP1045733A1/fr
Application granted granted Critical
Publication of EP1045733B1 publication Critical patent/EP1045733B1/fr
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
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/445—Moving, forwarding, guiding material stream of articles separated from each other
    • B65H2301/4452—Regulating space between separated 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
    • B65H2511/22—Distance
    • 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

Definitions

  • the invention relates to a method and a device for controlling the trigger according to the preamble of the independent claims.
  • a different behavior of the mail items during the withdrawal process also results from the different position of the mail items in the stack from which the mail items are withdrawn. This also results in different gaps, which leads to a loss in throughput.
  • the mail item to be withdrawn is therefore first accelerated to an intermediate speed value which is lower than a predetermined final speed in accordance with DE 196 07 304 Cl. As soon as the actual distance is equal to the target distance, the shipment is accelerated to the final speed.
  • the invention specified in the independent claims is therefore based on the problem of creating a method and a device for withdrawing flat mail items from a stack, which control the take-off in such a way that one for the further processing of the mail items without a measuring section made up of sensors for detecting the mail items arranged in a row Consignments optimal minimum gap between the consignments is observed. It is no longer necessary to continuously measure the distance of the withdrawn consignment from the consignment to be determined in order to determine the point in time for acceleration of the consignment to be withdrawn. Rather, it determines the speed at which the mail item to be withdrawn has to be transported from the first sensor to the second sensor in order to reach the desired target gap, ie a sensor line is no longer necessary.
  • a shaft 20 is fixedly mounted, but freely rotatable, on which a roller 21 is fastened.
  • the shaft 20 also serves for the pivotable mounting of a rocker arm 22, which carries the axis 23 of a further roller 24.
  • At least one take-off belt 25 is guided around the roller 21 and the take-off roller 24 as a separating member, the outer surface of which has a high coefficient of friction.
  • the rocker 22 is supported by a schematically indicated spring 26, so that its respective position depends on the pressure force of the stack of mail items, of which the foremost mail item 1 'is shown when it is pulled off.
  • the free end of the rocker 22 acts on a microswitch, not shown. If the pressure of the stack is too low, then closes a normally closed contact of the microswitch, whereby a gear motor (not shown) is switched on. At the end of the stack, this drives a supporting wall in the direction of the take-off roller 24 until, after reaching the position of the rocker corresponding to the intended pressing force, said break contact switches off again.
  • the shaft 20 is driven controllably in the direction of the arrow by a servo motor, not shown.
  • the edges pointing in the conveying direction, i.e. the leading edges of the mailpieces in the stack lie more or less close to a stop wall 40 which, in relation to the take-off belt 25, leaves a gap that allows the mailpieces to pass through, that is, the stack exit.
  • a pair of continuously driven conveyor rollers 43 and 44 is arranged in the conveying path of the mail items, by means of which the mail items are forcibly conveyed as soon as they have reached their detection area.
  • These conveyor rollers serve here as deflection rollers of conveyor belts 48 and 49, which are guided around further deflection rollers 50 and 51 in the conveying direction.
  • the driven conveyor roller 43 is fixed, the conveyor roller 44 is compliant in a known manner, e.g. mounted on a pivotable lever, but this is not shown in the drawing for the sake of simplicity.
  • a first light barrier 71/71 ' is arranged on a stop wall 40 as a sensor for mail item detection, the light receiver of which is designated by the reference numeral 71 and the associated light source by 71'. Photodiodes or phototransistors are used as light receivers.
  • This light barrier 71/71 ' is so far behind the stop wall 40 that the mail items have reached an average take-off speed at this point. This average pull-off speed is with the help Statistical data set so that the necessary changes in speed to carry out any gap changes are as small as possible.
  • a second light barrier 73/73 'with a light source 73' monitoring the detection area of the conveyor rollers 43 and 44 is provided.
  • the distance between the light barriers is chosen so large that the largest necessary changes in the gap can be realized with a defined maximum speed change.
  • These light barrier signals are evaluated by the microprocessor of a control circuit 60.
  • FIG. 2 shows a simplified illustration in which a number of mail items is arranged in a stack 100.
  • the withdrawal motor is switched on and the first program is started. If the front edge reaches the second light barrier 73/73 ', the take-off motor is stopped immediately and the item is further drawn off by the conveyor belts 48 and 49.
  • the trigger motor is only switched on again when the following condition is fulfilled: the first light barrier 71/71 'becomes bright.
  • Parameter Unit Meaning lidist m distance between the two light barriers 71/71 'and
  • V m / s speed of the conveyor belt speed of the removed item as soon as it has reached the second light barrier 73/73 'Va m / s speed from which the removed item is accelerated from the first light barrier T s reaction time of the control to edge detection on the light barriers BZ s acceleration / braking time of the trigger motor
  • the distance Lilgap of the rear edge of the withdrawn mailpiece from the first light barrier 71/71 'at the time at which the front edge of the mailpiece to be removed reaches the first light barrier 71/71' is determined using the edge signals of the first light barrier 71/71 'and one Clock generator 80 determined. If the front edge of the withdrawn mail item reaches the second light barrier 73/73 ', this mail item is transported further at the speed V. If the rear edge reaches the first light barrier 71/71 ', its position is known and the distance Lilgap is obtained by counting the clocks of the clock generator 80 up to the time of the leading edge signal of the subsequent shipment on the first light barrier 71/71'.

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Sorting Of Articles (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Pile Receivers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

L'invention concerne un procédé de commande d'un dispositif servant au retrait d'envois plats, dont la vitesse de retrait peut être régulée et qui conduit les envois à vitesse constante à des courroies de transport entraînées. Selon l'invention, il est procédé à une détermination de la vitesse à laquelle l'envoi à retirer doit être transporté à partir du point où il atteint un premier capteur servant à la détection des envois jusqu'à un second capteur correspondant pour permettre l'obtention d'un espace vide théorique souhaité. Le premier capteur se trouve à un emplacement où les envois (1') à retirer ont atteint une vitesse de retrait moyenne fixée, et le second capteur se trouve au point de prise en charge par les courroies de transport.
EP99930887A 1998-01-15 1999-01-08 Procédé de commande d'un dispositif servant au retrait d'envois plats d'une pile Expired - Lifetime EP1045733B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19801309A DE19801309C1 (de) 1998-01-15 1998-01-15 Verfahren zur Steuerung einer Abzugsvorrichtung für flache Sendungen von einem Stapel
DE19801309 1998-01-15
PCT/DE1999/000025 WO1999036195A1 (fr) 1998-01-15 1999-01-08 Procede de commande d'un dispositif servant au retrait d'envois plats d'une pile

Publications (2)

Publication Number Publication Date
EP1045733A1 true EP1045733A1 (fr) 2000-10-25
EP1045733B1 EP1045733B1 (fr) 2002-10-30

Family

ID=7854699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99930887A Expired - Lifetime EP1045733B1 (fr) 1998-01-15 1999-01-08 Procédé de commande d'un dispositif servant au retrait d'envois plats d'une pile

Country Status (4)

Country Link
EP (1) EP1045733B1 (fr)
JP (1) JP3893243B2 (fr)
DE (2) DE19801309C1 (fr)
WO (1) WO1999036195A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10355292B4 (de) * 2003-11-27 2005-11-03 Siemens Ag Verfahren und Einrichtung zum Vereinzeln von flachen Sendungen
JP4469671B2 (ja) 2004-07-09 2010-05-26 株式会社東芝 紙葉類取り出し装置
CN109821770A (zh) * 2019-04-10 2019-05-31 河北奈奎斯科技有限公司 一种全自动毛巾缺陷捡出机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH650995A5 (de) * 1981-02-10 1985-08-30 Frama Ag Zufuehreinrichtung fuer einzelne flache materialstuecke.
US4541624A (en) * 1982-03-24 1985-09-17 Nippon Electric Co., Ltd. Flat article feeding apparatus
DE3424397A1 (de) * 1984-07-03 1986-01-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Vereinzelungseinrichtung fuer flache gegenstaende
DE3544093A1 (de) * 1985-12-13 1987-06-19 Licentia Gmbh Verfahren zum steuern des abzugsvorganges bei einer vereinzelungseinrichtung und anordnung zur durchfuehrung des verfahrens
GB9113784D0 (en) 1991-06-26 1991-11-06 Vickers Plc Ship stabiliser automatic gain control system
DE19607304C1 (de) * 1996-02-27 1997-07-31 Aeg Electrocom Gmbh Verfahren zur Steuerung einer Abzugsvorrichtung für flache Sendungen von einem Stapel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9936195A1 *

Also Published As

Publication number Publication date
EP1045733B1 (fr) 2002-10-30
DE59903244D1 (de) 2002-12-05
WO1999036195A1 (fr) 1999-07-22
DE19801309C1 (de) 1999-08-12
JP2002509063A (ja) 2002-03-26
JP3893243B2 (ja) 2007-03-14

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