WO2000051925A2 - Procede et dispositif permettant d'isoler des envois plats - Google Patents

Procede et dispositif permettant d'isoler des envois plats Download PDF

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Publication number
WO2000051925A2
WO2000051925A2 PCT/DE2000/000421 DE0000421W WO0051925A2 WO 2000051925 A2 WO2000051925 A2 WO 2000051925A2 DE 0000421 W DE0000421 W DE 0000421W WO 0051925 A2 WO0051925 A2 WO 0051925A2
Authority
WO
WIPO (PCT)
Prior art keywords
trigger
take
adhesive
tapes
item
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.)
Ceased
Application number
PCT/DE2000/000421
Other languages
German (de)
English (en)
Other versions
WO2000051925A3 (fr
Inventor
Bertram Wanner
Burghard Rebel
Raymond P. Brady
Christoph Maurer
Rudolf Schuster
Adolf Hoepler
Christian Kassel
Matthias Stroessner
Kurt Lachner
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of WO2000051925A2 publication Critical patent/WO2000051925A2/fr
Publication of WO2000051925A3 publication Critical patent/WO2000051925A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B65H3/00—Separating articles from piles
    • B65H3/20—Separating articles from piles using adhesives
    • 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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/04—Endless-belt separators

Definitions

  • the invention relates to a method and a device for separating flat mail items from a stack according to the preambles of the independent claims.
  • the shipments are transported in batches in containers and in processing machines, e.g. Sorting machines, processed individually. To do this, the consignments must be separated from the stacks.
  • processing machines e.g. Sorting machines
  • a roller or belt is provided with a rough surface in order to achieve a high coefficient of friction with the exposed surface of the last shipment in the stack.
  • the moving belt or the rotating roller convey the last consignment perpendicular to the stack axis away from the stack if there is a frictional connection between the belt or roller and the surface of the consignment.
  • static friction is always sought to ensure reliable funding.
  • the static friction can only be guaranteed by a contact pressure that is sufficiently high even for different mail item surfaces with different friction coefficients.
  • the contact pressure between the exposed surface of the last shipment in the stack and the friction belt or friction roller is generated today in various ways: by the stack, which presses the last item of mail against the friction surface (for example deduction from below) (US 5,363,971), by a conveyor device which pushes the stack and presses it against the friction surface (standing goods) (US Pat. No. 5,292,114),
  • the disadvantage here is that, because of the unknown coefficient of friction, the contact pressure must be chosen high enough to guarantee a safe withdrawal. In particular when deducting from below, this leads to undesirably increased friction between the last and penultimate mail item, which leads to frequent double deductions. The frictional force must be maintained during the deduction so that a deduction can take place and can only be generated by means of a normal force.
  • Another disadvantage is the known generation of force by negative pressure, since it also leads to frequent double deductions, namely when the next shipment is also sucked in through an air-permeable, thin shipment.
  • the invention is based on the idea of using a driving force generated by a releasable adhesive connection in order to avoid or reduce the pressing force previously required for the necessary friction force during the pull-off process between the item to be pulled and the pull-off bands.
  • the free surface of the last shipment of the stack and the adhesive surface do not touch until immediately before the print. If a deduction is to be made, the two surfaces are briefly brought into contact by an external force. This contact must be as flat as possible and with sufficient contact pressure. After the contact between the two surfaces has been established, they adhere to each other through the adhesive. The external force can now be removed without removing this liability. Withdrawal can now take place in the unloaded state, with the surfaces remaining in a non-positive connection.
  • a wiper can also be arranged on the deflection rollers of the take-off belts with an adhesive effect in the take-off direction.
  • the pull-off process It is also advantageous to support the pull-off process with a further entraining force, which is generated by friction. It is advantageous to produce the friction connection by means of the guide bands provided with a corresponding covering.
  • the contact pressure required for the friction connection can be generated at least partially by a negative pressure on the side of the take-off element to avoid harmful stack pressure.
  • the deduction member can act on the mail item to be deducted at the same time during the deduction or at the same time by friction and detachable adhesive connection.
  • the friction belts and / or the pull-off tapes have recesses with an adhesive effect and one or more suction chambers with switchable and changeable negative pressure are arranged directly behind the belt sections running in the pull-off plane through the recesses on the mail items to be removed. Via the negative pressure, the contact pressure for realizing the adhesive and the pressure force necessary for the frictional entrainment are generated as required.
  • the short-term contact force required for the gluing can be generated by a corresponding short-term movement of the take-off element against the stack of mail items and / or of the stack of mail items with the item to be removed against the take-off element.
  • the trigger tapes are adhesive to produce these movements or supporting elements which move and hold the stack of mail items movably and are connected to a correspondingly controlled drive device.
  • the tape can be provided with an adhesive surface in sections with an adhesive effect in the direction of rotation.
  • the length of these sections advantageously corresponds at most to the length of the shortest shipment and the length of the distances between these sections at least to the length of the largest shipment to be deducted. This ensures that the next shipment of the stack does not come into contact with the adhesive surface during peeling.
  • the take-off belt or belts go through a cleaning and then a drying station during the circulation.
  • FIG. 1 shows a perspective schematic illustration of a removal device
  • FIG. 2 shows a schematic illustration of the stack feed with the removal level
  • FIG. 3 shows a top view of a schematic illustration of the removal device with cleaning and drying stage
  • the trigger element consists of two outer friction trigger bands 1 and a centrally arranged trigger band 2 with adhesive effect.
  • the two friction trigger belts 1 sit on two common axes and are driven together.
  • the trigger tape 2 with adhesive effect has its own tape guide and its own drive.
  • the axes of the friction belt 1 are arranged in a stationary manner, the axes of the belt 2 with adhesive effect can be moved with a drive in the direction of the stack of mail, as indicated by the arrow 3.
  • the total area of the deduction corresponds approximately to the dimensions (length times width) of the smallest shipment.
  • the trigger tape 2 with adhesive effect is not coated over the entire length, but only in sections.
  • the length of a coated section corresponds to the length of the tape, which is opposite the smallest item in the idle state.
  • the distances between the sections are at least as long as the length of the largest consignment to be deducted. This can reduce the risk of double deductions.
  • the trigger member also has a known wiper, not shown here, as can be seen in DE 197 29 430 AI.
  • the plane which the take-off belt 2 forms with an adhesive effect parallel to the surface of the item is shorter in the take-off direction than the plane correspondingly formed by the friction take-off belts 1.
  • a take-off cycle now runs as follows: The take-off belt 2 with adhesive effect has moved back from take-off level 7 (FIG. 3), so it has no contact with the item to be removed. A coat with the adhesive layer teter section of the deduction belt 2 is located opposite the consignment to be deducted. The foremost consignment of the stack to be separated, which lies against the extraction surface without force, is sucked onto the latter with a vacuum which acts through the recesses in the friction extraction belts 1. The trigger tape 2 is now moved with an adhesive effect with a rapid movement towards the trigger level 7, represented by the arrow 3. This creates the necessary contact pressure between the mailpiece and the trigger belt 2 and the drive for this movement is switched off.
  • an adhesive section of the trigger tape 2 lies in the trigger plane 7 and is in contact with the foremost shipment.
  • the frontmost consignment to be pulled against the trigger surface is now applied to the friction trigger belts 1 and thus to the trigger belt 2 with an adhesive effect, which occurs in the located on the same level.
  • the vacuum must be selected so that the contact pressure required for the adhesive is generated.
  • the trigger tape 2 can also be provided with recesses on the adhesive sections and the suction chamber can also be arranged behind the trigger tape 2 with the adhesive effect. After the consignment to be drawn sticks to the trigger belt 2, the negative pressure is switched off. Then the three take-off belts 1, 2 are driven at the same speed in the take-off direction and the foremost mail item to be removed is carried along by the adhesive. Due to the movement of the trigger tape 2 with the adhesive effect, the following non-adhesive part is transported into the trigger plane. This prevents the following consignment from being unwantedly transported by gluing.
  • sensors for example light barriers, are used to monitor whether the item to be removed has slippage with respect to the removal belts 1, 2. If this is the case, a negative pressure is generated in the friction trigger belts in the height switched on that the further transport is carried out slip-free.
  • the friction pulling belts 1 with their rear parts have to take over the further transport. This is the case at the latest after the minimum shipment length. Either the vacuum is switched on in the rear part or pressure rollers take over the generation of the frictional force.
  • the shipment is completely isolated and can be transferred to a transport device.
  • the two take-off belts 1 are transported until a light barrier detects the rear free edge of the removed mail item transferred to the transport device.
  • the adhesive trigger tape 2 is moved back from the trigger level 7 and is therefore no longer in contact with the foremost shipment. In this state, the trigger tape 2 is driven with an adhesive effect until the next adhesive section lies exactly in the trigger area. If the rear edge of the individual item has left the take-off area, the take-off belt 2 is moved back into the take-off level 7 with an adhesive effect and the cycle starts again.
  • Silicone with a low Shore hardness which is set to be “sticky”, is preferably used as the material for the adhesive surface.
  • Such silicone is e.g. of so-called lint rolls, which are used to clean fabrics, are known.
  • the "sticky” silicone has the advantage that dirt with dust or paper particles can be removed by simply washing it off.
  • the trigger tape 2 can be regenerated with an adhesive effect.
  • the silicone surface will deteriorate over time due to adhering dust particles.
  • the trigger tape 2 or the adhesive sections must be replaced by a Cleaning stage are carried out in which the adhering paper particles are removed from the silicone surface in a liquid bath using known means.
  • the cleaning can be done by spraying from nozzles, by brushing or by moving the belt in the bath or by ultrasound support. Water is preferably used as the liquid.
  • the take-off belt 2 (or the surface) is dried. This is done, for example, by blowing off with compressed air or by wipers that wipe off the liquid. Silicone does not absorb water itself. Because silicone is hydrophobic, the water rolls off the surface very well. Heated air supports drying.
  • the take-off belt 2 is continuously guided through a cleaning device 4 and a subsequent drying device 5 and advanced by the appropriate amount with each take-off.
  • the stack feed is shown schematically in FIG. 2.
  • the stack of mail items 8 stands on a loading table which runs slightly obliquely upwards.
  • the stack of mail items 8 is inclined slightly backwards and is supported by a support bracket 9 and pushed to the trigger point.
  • the support bracket 9 is fastened to a conveyor belt 10 which is driven in a controlled manner. The inclination was chosen so that as little pressure as possible was exerted on the deduction area by the weight of the mail items.
  • the transport surface drops off with the conveyor belt 10, so that drop-shaped mail items from the cross section are pressed by the holding support 9 approximately at the center of the take-off surface 11.
  • the horizontal area directly in front of the withdrawal surface 11 is as wide as the maximum mailing thickness.
  • the feed of the conveyor belt 10 with the holding support 9 is regulated by sensors which are located in the take-off plane.
  • the foremost mail item to be pulled is on the horizontal area of the stack feed directly in front of the take-off surface 11 and touches it almost without force. The deduction is made from the drawing level to the rear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

Procédé permettant d'isoler des envois plats prélevés à partir d'une pile qui peut être acheminée à l'aide d'un dispositif d'acheminement, parallèlement à un plan d'évacuation, jusqu'à un organe de prélèvement se déplaçant dans le sens de transport. L'organe de prélèvement comporte une ou plusieurs bandes de prélèvement rotatives sur des rouleaux et entraînées de manière commandée. Au moins un bande de prélèvement possède à intervalles réguliers une surface adhésive réutilisable.
PCT/DE2000/000421 1999-02-26 2000-02-14 Procede et dispositif permettant d'isoler des envois plats Ceased WO2000051925A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19908421.1 1999-02-26
DE1999108421 DE19908421C1 (de) 1999-02-26 1999-02-26 Verfahren und Vorrichtung zum Vereinzeln von flachen Sendungen

Publications (2)

Publication Number Publication Date
WO2000051925A2 true WO2000051925A2 (fr) 2000-09-08
WO2000051925A3 WO2000051925A3 (fr) 2001-03-29

Family

ID=7899008

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/000421 Ceased WO2000051925A2 (fr) 1999-02-26 2000-02-14 Procede et dispositif permettant d'isoler des envois plats

Country Status (2)

Country Link
DE (1) DE19908421C1 (fr)
WO (1) WO2000051925A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10127993A1 (de) * 2001-06-08 2002-12-12 Francotyp Postalia Ag Vereinzelungsvorrichtung für flache Gegenstände und Vereinzelungsverfahren

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082278B (de) * 1957-06-26 1960-05-25 Telefonbau Vorrichtung zum Vereinzeln der Bogen eines Stapels mit Hilfe eines Haftmittel-traegers
US3861669A (en) * 1972-06-15 1975-01-21 Tokyo Shibaura Electric Co Apparatus for feeding sheet-like articles from a stack of articles
JPS5856733U (ja) * 1981-10-14 1983-04-18 日本電気株式会社 紙葉類の供給装置
JPS58144030A (ja) * 1982-02-18 1983-08-27 Shohei Yoshida 柔軟な布地の取出装置
SU1551635A1 (ru) * 1985-12-18 1990-03-23 Московский Полиграфический Институт Листоподающее устройство
US5292114A (en) * 1991-09-27 1994-03-08 Westinghouse Electric Corp. Automatic feeder module for a mail sorting system
US5363971A (en) * 1992-10-16 1994-11-15 United States Postal Service Automatic carrier sequence bar code sorter
DE19729430A1 (de) * 1997-07-09 1999-01-14 Siemens Ag Vorrichtung zum Verhindern von Doppelabzügen

Also Published As

Publication number Publication date
WO2000051925A3 (fr) 2001-03-29
DE19908421C1 (de) 2000-05-25

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