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
  • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
  • B65H3/52—Friction retainers acting on under or rear side of article being separated
  • B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
  • B65H3/523—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned over articles separated from the bottom of the pile
  • B65H3/5238—Retainers of the pad-type, e.g. friction pads
• • 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
  • B65H2701/1912—Banknotes, bills and cheques or the like

Definitions

• the present invention relates to a device for destacking sheet by sheet from a stack of sheets, in particular such a device where the stack is arranged vertically and where the sheets are not necessarily all of the same height and / or of the same width.
• U.S. Patent 4,852,868 describes such a device.
• This device comprises a presser arm which urges a stack of sheets towards a first drive roller.
• This first drive roller drives the sheets towards a second drive roller rotating in the same direction and which is applied against a roller rotating in the opposite direction.
• vertical stack unstacking devices known mechanisms of horizontal stacking devices are often used, or mechanisms with a single unreliable roller.
• conventional destacking devices have the drawback of causing a sheet as it appears in the stack. This drawback is particularly critical in check processing equipment, for example. In fact, checks are often of different heights and some checks may go wrong in the stack. If the misaligned checks are not straightened, their processing Barcode reading, printing of characters) is likely to happen in poor conditions.
• An object of the present invention is to provide a vertical unstacking device with a particularly simple structure.
• Another object of the present invention is to provide a. destacking device straightening out misaligned sheets.
• a sheet-by-sheet destacking device for a stack of sheets arranged perpendicularly to a support plane, comprising a presser arm pressing on a first face of the stack; a single friction drive roller with an axis perpendicular to the support plane and disposed at a predetermined distance from the support plane, the second face of the stack being applied to the roller along a first edge; a stop having low adhesion, disposed next to the roller on the opposite side of the support plane, com ⁇ taking a surface parallel to the axis of the roller and recessed relative to the roller; and a pad substantially perpendicular to the support plane elastically biased towards said surface of the stop along a second edge located beyond the first edge.
• the stop comprises a part projecting towards the sheets, on the opposite side of the roller.
• the shoe comprises a facet practically tangent to said surface of the stop at the second edge.
• the pressing arm is articulated with clearance on an axis perpendicular to the support plane, a spring pressing on the arm at the level of the roller.
• the shoe is articulated on an axis parallel to the support plane so as to ensure linear contact of the shoe with the stop.
• the stop is a loose roller coaxial with said drive roller and of smaller diameter.
• said projecting part is a shoulder of the idler roller.
• the destacking device comprises a switcher articulated on an axis perpendicular to the support plane and comprising a free end urged towards a guide plate of the sheets driven by the drive roller.
• the free end of the switch comprises fingers parallel to the support plane, the distal ends of which are retractable in corresponding orifices of the guide plate.
• FIGS. 1A and 1B respectively represent top views in section along the line AA and along the line BB of FIG. 2B of an embodiment of the demilling device according to the present invention
• FIGS. 2A and 2B represent two enlarged views of part of the destacking device of FIGS. 1A and 1B, respectively according to an arrow FI and an arrow F2 in FIG. 1B
• FIG. 3 represents a perspective view of the de-stacking device of FIGS. 1A and 1B
• FIG. 4 represents an enlarged top view of the main elements of the de-stacking device of FIGS.
• FIG. 6 illustrates a partial top view of another embodiment of the destacking device according to the present invention
• FIG. 7 illustrates a perspective view of the device of FIG. 6, according to an arrow F3.
• FIGS. 1A, 1B, 2A, 2B and 3 An embodiment of a de-stacking device according to the present invention will be described below using FIGS. 1A, 1B, 2A, 2B and 3 simultaneously. This embodiment will be described in the context of a check unstacking device.
• a stack of checks 1, shown in FIG. 1A, is placed vertically on a support plane 3 and is slid manually between a free end of a pressing arm 5 and rollers 7, 8 with a common vertical axis 10.
• the free end of the arm 5 is resiliently biased towards the rollers, thus, if the rollers rotate in the direction of an arrow f, it is understood that the first check of the stack tends to be driven by the rollers. However, the first check is likely to cause other checks to rub.
• These other checks are stopped by a vertical shoe 12 which is urged elastically towards the rollers on the same side as the presser arm 5.
• the roller 7 is a drive roller made of a material having with a sheet of paper a high coefficient of friction and is integral with the axis 10 which is driven by a mechanism not shown, located under the plate 3. As this is shown in Figures 2A and 2B, the roller 7 is thin and is arranged substantially halfway up the pad 12 and the arm 5. The height of the pad 12 and the arm 5 is approximately equal to the half height d 'an average check.
• the roller 8, disposed above the roller 7, is an idler roller, that is to say that it rotates freely around the axis 10. The diameter of this roller 8 is slightly smaller than that of the roller
• the checks are preferably ent pressed against the roller 7 so as to obtain a more effective drive.
• roller 8 is not a motor causes an asymmetry of configuration which has the advantage of redres ⁇ ser checks which do not appear well horizontally in the stack 1.
• this configuration allows to compensate for a possible defect of perpendicularity of the axis 10 of the rollers, which would result in the crushing of the checks against the support plane 3, or their detachment.
• roller 8 is crazy results in low resistance to the advancement of the checks.
• this roller 8 could be fixed, and even consist only of a part of frame with rounded shape in the area of contact with checks.
• the upper part of the roller 8 includes a shoulder 14 projecting from this roller, for example, of the same diameter as the drive roller 7. The role of this shoulder will be described later.
• the axis 10 is guided in bearings 16 secured to a frame 17 fixed to the plate 3.
• the frame 17 also serves as a vertical guide for one face of the stack of checks 1.
• the pressing arm 5 is substantially in the form of a vertical plate.
• the end of the arm 5 furthest from the rollers 7 and 8 is articulated on a vertical axis 19 passing through horizontal eyelets 21 integral with the arm 5.
• One of the eyelets here the upper eyelet visible in FIGS. 1A and 3, has an oblong hole perpendicular to the arm 5, which leaves the arm 5 a certain freedom of rotation about a horizontal axis which appears lele on the arm. This ensures uniform application of the arm 5 on the stack of checks.
• a force P is exerted on the free end of the arm 5 at the center of the roller 7.
• the force P is obtained by a spiral spring 23 wound around the axis 19.
• This spring comprises a short arm 23-1 pressing against a stud 24 fixed on the plate 3 and a long arm 23-2 pressing at the free end of the pressing arm 5 by means of a part 26 secured to the presser arm.
• the shoe 12 comprises a vertical part 12-1 of the height of the pressing arm 5 and serves as the main stop for a stack of checks.
• This vertical part comprises a facet 12-2 practically tangent to the idler roller 8 along an edge T1 and it is hollowed out so as not to come into contact with the drive roller 7.
• the edge T1 is located slightly beyond the edge T2 of first contact of the checks with the rollers.
• the vertical part 12-1 extends the shape of the part 12-3 downwards.
• the pad is articulated about a horizontal axis 28. The rotation of the pad 12 around this axis 28 is limited by a stud 29 disposed below the axis 28 in a horizontal oblong hole in the vertical part 12-1.
• a vertical sheet 31 folded at an angle comprises an arm 31-1 perpendicular to the stack of checks 1 in which the pin 28 and the stud 29 are mounted, and an arm 31-2 parallel to the stack of checks.
• the end of the arm 31-2 is articulated by eyelets horizon ⁇ rate 33 in which passes a vertical axis 34.
• the shoe 12 is biased towards the roller 8 by means of a spiral spring 35 wound around the axis 34. This spring comprises two arms resting between the arm 31-2 of the square plate 31 and a stud 36 fixed on the plate 3.
• Figure 4 illustrates a partial view of Figure 1A where there is shown a stack of checks 1 being unstacked.
• FIG. 5 illustrates a partial view of FIG. 2B during the passage of a check at the edge Tl of contact of the shoe 12 with the idler roller 8. This figure is not to scale and the dimensions of certain elements have been enlarged for the sake of clarity.
• the first check C in the stack makes the following trip.
• the device according to the present invention is particularly simple and reliable.
• its asymmetrical configuration has the advantage of straightening checks which do not appear well horizontally in the stack and of compensating for a possible lack of perpendicularity of the axis 10 of the rollers. .
• FIG. 6 illustrates another embodiment of a check unstacking device according to the present invention connected to a check processing device 50.
• the device 50 receives the checks leaving the destacking device and performs operations with each check sometimes requiring that the check goes back and forth. If the device 50 is not far enough from the destacking device, a check making a return could come up against elements of the unstacking device and get jammed or wrinkled.
• the destacking device comprises a switcher 52 replacing the extension 17-1 (see FIG. 4).
• This switch 52 is wedge-shaped, the thick part of which is on the side of the frame 17 and the thin part of the side of the plate 40. It is articulated on a vertical axis 53 at the level of its thick part and its thin part is recalled by a spring not shown against the plate 40.
• the check can thus freely go back and forth without abutting elements of the destacking device and it is unnecessary to provide a substantially equal distance at a length of check between the destacking device and the processing device 50.
• the compartment 55 is also used to manually insert checks directly into the processing device 50.
• FIG. 6 shows a partial perspective view along an arrow F3 of the device of Figure 5. There are the same elements designated by the same references. Part of the plate 40 has been removed in order to better see the shape of the switch 52 located behind.
• the plate 40 includes a series of oblong holes 40-1 horizontal and vertically aligned.
• the switcher 52 comprises fingers 52-1 extending horizontally in correspondence with the oblong holes 40-1.
• the fingers 52-1 penetrate the oblong holes 40-1 and bear on the edges of the oblong holes at their proximal ends.
• the distal ends of the fingers 52-1 are retracted into the oblong holes 40-1.
• This configuration allows an easy passage of a check from the destacking device to the processing device 50.
• the retractable fingers 52-1 do not present any obstacle to a check making a return to the compartment 55 from the processing device 50.
• Such a switching device could be used in many other applications where objects are sus ⁇ ceptibles to cross the switching device and return in the opposite direction.
• Many variants and modifications of the present invention will appear to a person skilled in the art, in particular as regards mechanical assembly solutions and the choice of materials.
• the unstacking device according to the invention can also be used to unstack horizontal stacks by turning it 90 °.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=9420257

Family Applications (1)

Country Status (4)

Families Citing this family (4)

Family Cites Families (10)

• 1991
  • 1991-12-13 FR FR9115835A patent/FR2684977B1/fr not_active Expired - Fee Related
• 1992
  • 1992-12-14 WO PCT/FR1992/001180 patent/WO1993012023A1/fr not_active Application Discontinuation
  • 1992-12-14 EP EP93902327A patent/EP0571621A1/de not_active Withdrawn
  • 1992-12-14 US US08/098,385 patent/US5413325A/en not_active Expired - Fee Related

Non-Patent Citations (1)

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