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US3126200A - Separating device - Google Patents

Separating device Download PDF

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Publication number
US3126200A
US3126200A US3126200DA US3126200A US 3126200 A US3126200 A US 3126200A US 3126200D A US3126200D A US 3126200DA US 3126200 A US3126200 A US 3126200A
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US
United States
Prior art keywords
shipments
another
suction
shoe
belt
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.)
Expired - Lifetime
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English (en)
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Classifications

    • 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
    • B07C1/04—Forming a stream from a bulk; Controlling the stream, e.g. spacing the 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
    • 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
    • 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/32—Orientation of handled material
    • B65H2301/321—Standing on edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • 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 generally to the sorting art, and, more particularly, to a device for separating adhering articles in a sorting plant.
  • shipments are disposed in a stack or pile and are individually removed from this stack.
  • shipments have been individually removed from such a stack by means such as a perforated suction belt.
  • suction belts have suction openings disposed in groups spaced from one another a distance which corresponds to the desired conveying distance between shipments. The suction openings run over suction slots of a suction trough. Each group of suction openings carries a shipment away from the stack, and this shipment is carried along the belt by suction force.
  • Friction strippers are known which, by frictional effect, detain those shipments not directly abutting against the conveyor belt. Since the frictional properties of the individual shipments are different, it is difi'icult to adjust the frictional force of the friction stripper to assure that excess shipments carried along will be detained in each case.
  • Another object is to provide a separator which uses pressurized air to separate overlying and adhering shipments and which is simple in construction, relatively inexpensive to manufacture, yet exceedingly effective in performing the separating operation.
  • At least one yie'lclably supported pressure shoe faces and is slightly spaced from a suction belt.
  • An air port is provided in the belt-facing surface of the pressure shoe. This port is provided with air at superatmospheric pressure so that shipments adhering to one another by suction or otherwise are lifted off and separated from amazon Patented Mar. 24, 1954':
  • the device according to the present invention may especially be combined with a suction device.
  • FIGURE 1 is a diagrammatic longitudinal sectional view through the invention used in conjuction with a suction belt type separating device.
  • FIGURE 2 is a longitudinal sectional view of one embodiment of the invention.
  • FIGURE 3 is a transverse sectional view taken substantially along the plane defined by line 33 of FIG- URE 2.
  • FIGURE 4 is a longitudinal sectional view of another embodiment of the invention.
  • FIGURE 5 is a transverse sectional view taken substantially along the plane defined by line 55 of FIG- URE 4.
  • FIGURE 6 is a longitudinal sectional view of a further embodiment of the invention.
  • FIG-URE 7 is a longitudinal sectional view of the embodiment of FIGURE 6 taken along a plane spaced from but parallel to the plane along which FIGURE 6 is taken.
  • FIGURE 8 is a diagrammatic side view illustrating an arrangement of a plurality of pressure shoes cooperating with a suction belt separating device.
  • FIG- URE 1 illustrates a suction belt v1 having groups of suction openings 2 and which moves in the direction of arrow 3 over the slit-like suction ports of a suction trough 4
  • the viewing plane of FIGURE 1 extends through a slitlike suction port 24.
  • the distance between the individual groups of openings 2 on suction belt 1 corresponds to the desired conveying distance between shipments in the plant.
  • the shipments 5 are disposed in a stack which has one side corresponding to the leading edges of the letters abutting against the wall 6. In each case only the shipment of stack 5 abutting against the belt is to be carried along by the belt due to the adhering force caused by the suction effect of a group of openings 2.
  • the suction trough 4 is connected with a suction or vacuum producing unit at '7.
  • FIGURE 1 where two shipments 8 and 9 have been simultaneously picked up by suction openings 2.
  • Shipment 9 must be detained since, otherwise, disturbances may occur in subsequent sections of the sorting plant.
  • a pressure shoe 10 is arranged in opposition to suction belt 1, and is yieldably mounted by means of a swivel arm '11. A slight biasing force is applied to shoe 10' by means of spring 30 attached to swivel arm 11 to urge the shoe toward suction belt 1.
  • the shoe surface 12 is preferably plane and is maintained at a short distance from suction belt I, by means described below.
  • shoe 10 may be retracted at substantially right angles to the plane of suction belt 1.
  • the end of the shoe surface facing the entering shipments defines an entering surface 13, inclined with respect to suction belt 1.
  • This entering surface 13 is provided so that the shoe will be gently moved away from the suction belt by an entering letter.
  • At least one air pressure port 14 is provided in the shoe surface 12 through which a gas, especially air, flows under superatmospheric pressure.
  • the compressed air may preferably be supplied to the shoe through a hollow swivel arm 11 from an air pump 32. However, it is possible to it) provide other means for feeding the compressed air to the shoe.
  • a vacuum or subatmospheric pressure zone is formed on the shoe surface due to the air blast issuing from port 14. Because of this subatmospheric pressure, formed by the suction effect of the outflowing air, shipments 9 not directly abutting against the belt are lifted from the underlying shipment, thus making it possible to detain them. Since compressed air continuously fiows through port 14, even shipments tightly adhering to one another, for example, due to vacuum pressure when one shipment is porous, are lossened by the effect of this air current and the adhesive effect is removed.
  • the shoe surface 12 should always be maintained at a short distance from suction belt 1 and from shipments 8 or 9, so that the compressed air may flow unimpeded to form the suction force.
  • spe cial measures must be taken. These are indicated in FIGURES 2 through 7.
  • Shoe in FIGURES 2 and 3 has a plane shoe surface 12. This surface is slightly inclined with respect to the plane of suction belt I and has only one corner which abuts against suction belt 1 and the shipments. Due to this construction, the compressed air discharged through port 14 may freely flow into the wedge-shaped zone 16.
  • FIGURES 4 and 5 illustrate another arrangement of the shoe according to the invention.
  • Shoe surface 12 in this embodiment is disposed parallel to suction belt 1.
  • at least one small projecting supporting abutment 17 is provided which limits the minimum distance between shoe surface 12 and suction belt I or the surface of a shipment.
  • the compressed air may freely flow into the rectangular zone 18.
  • FIGURES 6 and 7 illustrate an embodiment similar to that of FIGURE 3.
  • FIGURE 6 shows a shoe having a supporting abutment 17.
  • an additional pressure port 19 is provided at as small an angle as possible with the direction of conveying.
  • the air current flowing through port 19 detains the small stacks of letters carried along due to frictional effect.
  • Port 19 has no effect on the separation of shipments held tightly to one another by vacuum pressure.
  • FIGURE 7 is taken along a plane passing through the supporting abutment 17, and is parallel to the viewing plane of FIGURE 6.
  • An additional pressure port 20 is formed through abutment 17.
  • the compressed air discharged through nozzle 20 has a cushioning effect and abutment 17 tends to rest on an air cushion. This prevents wear and tear on the small supporting abutment 17 so that the distance of shoe surface 12 from suction belt 1 remains constant for quite a long duration of operation.
  • the dynamic suction force is a function of the air discharge velocity, as governed by the pressure and flow conditions in the zone between shoe and shipment or suction belt, respectively.
  • special pressure balancing apparatus such as air chambers have to be provided in each case since, during the movements of the suction member, undesired air is drawn in, thereby reducing the vacuum pressure.
  • Such measures are unnecessary when a shoe using superatmospheric pressure is used, and therefore the shoe may be connected directly with a pressure pump.
  • FIGURE 8 shows such an arrangement in diagrammatic form.
  • a suction belt 1 with draws the shipments from a stack 5.
  • two shoes 21 and 22 are arranged which lift the letters in the region of their top and bottom edges.
  • a suction member 23 In the center, opposite the suction slots of the suction trough, a suction member 23, yieldably supported in a similar manner as the shoe, is provided which, by suction force, detains shipments not directly abutting against the suction belt. Such an arrangement makes possible an especially effective separation of the shipments.
  • the shoes and suction members may be rigidly connected with one another mechanically and supported by a common support.
  • Shoes according to the invention are usable even with drum-shaped separating devices since, for purposes of the present invention, suction drum means are considered equivalent to the suction belt means described above.
  • the shoe surface has to be adapted to the usually cylindrical drum surface so that their mutual distance is the same all over.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for flat material to be conveyed, especially mail shipments comprising at least one yieldably supported shoe facing and slightly spaced from a suction belt, the shoe surface facing the shipments defining at least one port provided with a gas at super-atmos heric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another by the action of the outfiowing gas.
  • a device wherein the shoe surface facing the shipments, at its upstream end, defines an inclined guiding entering surface.
  • a device according to claim 1, wherein the beltfacing shoe surface is slightly inclined transversely and longitudinally with respect to the plane of the belt so that one corner of the shoe acts as a gliding surface.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for fiat material to be conveyed, especially mail shipments comprising at least one yieldably supported shoe facing and slightly spaced from a suction belt, the shoe surface facing the shipments defining at least one port provided with a gas at superatmospheric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another by the action of the outflowing gas, and said shoe being yieldably supported on a swivel arm.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for flat material to be conveyed, especially mail shipments comprising at least one yieldably supported shoe facing and slightly spaced from a suction belt, the shoe surface facing the shipments defining at least one port provided with a gas at superatmosphe-ric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another by the action of the outfiowing gas, said belt-facing shoe surface being parallel to the plane of the belt, and having at least one small elevated supporting abutment on its upstream end.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for flat material to be conveyed, especially mail shipments comprising at least one yieldably supported shoe facing and slightly spaced from a suction belt, the shoe surface facing the shipments defining at least one port provided with a gas at superatmospheric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another 5 by the action of the outflowing gas, the belt-facing shoe surface being parallel to the plane of the belt, and having at least one small elevated supporting abutment on its upstream end, and an additional port in said abutment which generates an air cushion under the supporting abutment.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for flat material to be conveyed, especially mail shipments comprising at least one yieldably supported shoe facing and slightly spaced from a suction belt, the shoe surface facing the shipments defining at least one port provided with a gas at superatmospheric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another by the action of the outflowing gas, the belt-facing shoe surface being parallel to the plane of the belt, and having at least one small elevated supporting abutment on its upstream end, and an additional obliquely disposed port defined in the entering surface.
  • a device for use subsequent to a shipment separating unit to separate shipments which adhere to each other comprising, in combination: a conveying device for transporting shipments; a yieldably mounted blowing shoe slightly spaced from the conveying or shipment carrying surface of the conveying device, the shipment facing surface of said shoe having a port therein for conducting air at superatmospheric pressure toward said conveying device; means biasing said shoe surface toward said conveying surface; and abutment means on said shoe for limiting e minimum distance between said shoe surface and said conveying surface or a shipment.
  • a device for removing the mutual adhesive effect of shipments drawn tightly together in a suction belt separating unit for flat articles such as mail shipments comprising at least one yieldably mounted blowing shoe biased toward and facing the suction belt and having a port in the belt facing surface thereof, a small sliding abutment on said surface limiting the minimum distance between said surface and the belt or a shipment thereon.
  • An arrangement for eliminating the mutual adhering efiect of shipments which are drawn together in singling apparatus having a suction type transporting element, especially for mail shipments, by using the suction effect of an air blast comprising, at least one blowing shoe located downstream, in the direction of movement, from a singling apparatus and arranged opposite the suction type transportin element, said shoe being resiliently mounted and continuously biased toward the transporting element, the surface of said shoe which faces the shipments having a blowing opening and means for limiting the smallest distance between said surface and the shipments.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for flat material to be conveyed, especially mail shipments comprising a plurality of yieldably supported shoes facing and slightly spaced from a suction belt and disposed next to one another transversely of the direction of conveying, the shoe surfaces facing the shipments each defining at least one port provided with a gas at superatmospheric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another by the action of the outfiowing gas.
  • a device according to claim 12, comprising at least one yieldably supported suction member cooperating with the shoes.
  • suction member is arranged between two shoes which are active along a different portion of the shipments than the suction member, such as in the region of the top edge and bottom edge of the shipments.
  • a device wherein the shoes and the suction member are rigidly connected with one another and have a common yieldable support.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for fiat material to be conveyed, especially mail shipments comprising a plurality of yieldably supported shoes facing and slightly spaced from a suction belt and disposed one after the other longitudinally of the direction of conveying, the shoe surfaces facing the shipments each defining at least one port provided with a gas at superatmospheric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another by the action of the outflowing gas.
  • a device according to claim 16 comprising at least one yieldably supported suction member cooperating with said shoes.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for fiat material to be conveyed, especially mail shipments comprising at least one shoe facing and slightly spaced from the suction belt, and arm means for yieldably supporting such shoe, the shoe surface facing the shipments defining at least one port provided with a gas at superatmospheric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another by the action of the outflowing gas.
  • a device for removing the mutual adhesive effect of shipments drawn tightly to one another in a suction belt separating unit for flat material to be conveyed, especially mail shipments comprising at least one shoe facing and slightly spaced from the suction belt, means yieldably supporting said shoe and urging it toward such belt, the shoe surface facing the shipments defining at least one port provided With a. gas at superatrnospheric pressure so that shipments adhering to one another or drawn tightly to one another are lifted from one another by the action of the outfiowing gas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US3126200D 1960-07-30 Separating device Expired - Lifetime US3126200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET18780A DE1116240B (de) 1960-07-30 1960-07-30 Einrichtung zum Trennen von aneinander festgesaugten Sendungen

Publications (1)

Publication Number Publication Date
US3126200A true US3126200A (en) 1964-03-24

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US3126200D Expired - Lifetime US3126200A (en) 1960-07-30 Separating device

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US (1) US3126200A (it)
DE (1) DE1116240B (it)
GB (1) GB944339A (it)
NL (1) NL267719A (it)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198515A (en) * 1963-04-05 1965-08-03 Robert C Pitney Aerodynamic document handling apparatus
US3245681A (en) * 1963-11-12 1966-04-12 Soroban Engineering Inc Card picker mechanism
US3279361A (en) * 1965-01-04 1966-10-18 Data Products Corp Print hammer positioning means employing high velocity gas stream directed against hammer
US3345922A (en) * 1963-04-06 1967-10-10 Caledex Machine Co Ltd Method and apparatus for wrapping containers
US3370847A (en) * 1965-04-30 1968-02-27 Harris Intertype Corp Sheet registering device
US3431009A (en) * 1967-01-06 1969-03-04 Western Electric Co Pickup device for supporting workpieces on a layer of fluid
US3591167A (en) * 1969-02-27 1971-07-06 Signode Corp Sheet feeding apparatus
US3613886A (en) * 1968-11-22 1971-10-19 Lear Siegler Inc Feeder and stacker
US3804401A (en) * 1972-10-30 1974-04-16 Xerox Corp Pneumatic stripping apparatus
US3837640A (en) * 1972-11-13 1974-09-24 Xerox Corp Stripper finger with air cushion
US5520380A (en) * 1993-09-27 1996-05-28 Compagnie Generale D"Automatisme CGA HBS Double pick separator device and flat object unstacking device equipped with this separator
WO2011117508A1 (fr) * 2010-03-25 2011-09-29 Solystic Dispositif d'alimentation en objets plats et machine de tri postal
WO2018024707A1 (de) * 2016-08-01 2018-02-08 Asys Automatisierungssysteme Gmbh Transportsystem und bearbeitungssystem für substrate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236531B (de) * 1962-09-19 1967-03-16 Siemens Ag Einrichtung zum Vereinzeln von gestapelten, flachen Gegenstaenden
DE1274391B (de) * 1963-08-29 1968-08-01 Telefunken Patent Einrichtung zum Zurueckhalten von Doppel- oder Mehrfachabzuegen an einem Vereinzelerfuer flache Sendungen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1770659A (en) * 1926-07-02 1930-07-15 Oehmichen Etienne Cinematographic apparatus
US2031078A (en) * 1933-08-28 1936-02-18 Spiess Georg Sheet separating and feeding device
US2218484A (en) * 1939-09-16 1940-10-15 Dexter Folder Co Sheet feeding apparatus
US2766044A (en) * 1953-08-28 1956-10-09 Bruning Charles Co Inc Sheet separating device
US2953371A (en) * 1957-12-31 1960-09-20 Burroughs Corp Sheet feeder
US2970834A (en) * 1957-09-06 1961-02-07 Pitney Bowes Inc Letter feeding device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1770659A (en) * 1926-07-02 1930-07-15 Oehmichen Etienne Cinematographic apparatus
US2031078A (en) * 1933-08-28 1936-02-18 Spiess Georg Sheet separating and feeding device
US2218484A (en) * 1939-09-16 1940-10-15 Dexter Folder Co Sheet feeding apparatus
US2766044A (en) * 1953-08-28 1956-10-09 Bruning Charles Co Inc Sheet separating device
US2970834A (en) * 1957-09-06 1961-02-07 Pitney Bowes Inc Letter feeding device
US2953371A (en) * 1957-12-31 1960-09-20 Burroughs Corp Sheet feeder

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198515A (en) * 1963-04-05 1965-08-03 Robert C Pitney Aerodynamic document handling apparatus
US3345922A (en) * 1963-04-06 1967-10-10 Caledex Machine Co Ltd Method and apparatus for wrapping containers
US3245681A (en) * 1963-11-12 1966-04-12 Soroban Engineering Inc Card picker mechanism
US3279361A (en) * 1965-01-04 1966-10-18 Data Products Corp Print hammer positioning means employing high velocity gas stream directed against hammer
US3370847A (en) * 1965-04-30 1968-02-27 Harris Intertype Corp Sheet registering device
US3431009A (en) * 1967-01-06 1969-03-04 Western Electric Co Pickup device for supporting workpieces on a layer of fluid
US3613886A (en) * 1968-11-22 1971-10-19 Lear Siegler Inc Feeder and stacker
US3591167A (en) * 1969-02-27 1971-07-06 Signode Corp Sheet feeding apparatus
US3804401A (en) * 1972-10-30 1974-04-16 Xerox Corp Pneumatic stripping apparatus
US3837640A (en) * 1972-11-13 1974-09-24 Xerox Corp Stripper finger with air cushion
US5520380A (en) * 1993-09-27 1996-05-28 Compagnie Generale D"Automatisme CGA HBS Double pick separator device and flat object unstacking device equipped with this separator
WO2011117508A1 (fr) * 2010-03-25 2011-09-29 Solystic Dispositif d'alimentation en objets plats et machine de tri postal
FR2957906A1 (fr) * 2010-03-25 2011-09-30 Solystic Dispositif d'alimentation pour envois postaux avec un magasin et un depileur separes
US8480072B2 (en) 2010-03-25 2013-07-09 Solystic Flat-article feed device and a postal sorting machine
WO2018024707A1 (de) * 2016-08-01 2018-02-08 Asys Automatisierungssysteme Gmbh Transportsystem und bearbeitungssystem für substrate
CN109689541A (zh) * 2016-08-01 2019-04-26 亚席斯自动化系统有限公司 用于基板的传输系统和加工系统

Also Published As

Publication number Publication date
NL267719A (it)
GB944339A (en) 1963-12-11
DE1116240B (de) 1961-11-02

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