EP0815046B1 - A sheet nudging assembly - Google Patents
A sheet nudging assembly Download PDFInfo
- Publication number
- EP0815046B1 EP0815046B1 EP96942479A EP96942479A EP0815046B1 EP 0815046 B1 EP0815046 B1 EP 0815046B1 EP 96942479 A EP96942479 A EP 96942479A EP 96942479 A EP96942479 A EP 96942479A EP 0815046 B1 EP0815046 B1 EP 0815046B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- nudging
- sheets
- stack
- assembly according
- 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
Links
Images
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
- B65H3/5246—Driven retainers, i.e. the motion thereof being provided by a dedicated drive
-
- 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 invention relates to a sheeting nudging assembly for use, for example, in a sheet handling system.
- Sheet handling systems are used in a wide variety of fields to feed sheets from a stack. Examples include banknote dispensing and also photocopy paper dispensing.
- a known system for dispensing sheets from a stack is disclosed in EP-A-0645328.
- the assembly makes use of a rotatable wheel through which suction is applied selectively to draw sheets from the stack.
- the sheets are stacked on their edges in a sheet store, the store including a sheet exit and a face plate towards which the sheets are urged.
- a sheet holding device to selectively prevent sheets being fed, and a nudging device, to urge the foremost sheet towards the sheet exit.
- the nudging device engages with the leading sheet through an aperture in the face plate, the sheet is then nudged towards the sheet exit and the nudging device then retracts away from the sheet.
- the nudger eccentric is driven by the same drive that controls the valves for supplying vacuum to the components of the sheet handling system.
- Such an arrangement is disclosed in EP-A-0645328 and is used to maintain the timing of the nudging device relative to the sheet feed mechanism and the sheet holding device.
- this sometimes suffers from the disadvantage that when it is not required to feed a sheet, continued oscillation of the nudging device could cause the sheet to be advanced too much towards the sheet exit.
- a nudging assembly for nudging the leading sheet in a stack of sheets, the assembly comprising a nudging device coupled to a drive mechanism which causes the device to undergo a reciprocal movement; characterised in that the assembly further comprises a control mechanism for controllably activating the nudging device into an operative condition in which the device periodically engages the leading sheet in the stack of sheets and urges it towards a sheet exit, the control mechanism including a position controller for moving the nudging device between an extended operative position in which the device periodically engages the leading sheet in the stack of sheets and urges it towards a sheet exit and a retracted non-operative position in which it cannot engage the stack while allowing the device to continue with its reciprocal movement; and in that the nudging device comprises two sections, wherein the first section is coupled to the drive mechanism and the second section is movably mounted to the first section for movement between the retracted and extended positions.
- the control mechanism may comprise means for controllably activating the nudging device drive mechanism whereby the device does not undergo the reciprocal movement when it is not required to feed a sheet or group of sheets.
- the nudging device comprises part of a sheet handling assembly which further comprises a sheet holding device for holding the leading sheet in the stack of sheets.
- the sheet holding device may comprise means for controllably applying a vacuum to the leading sheet in the stack of sheets.
- the mechanism that drives the nudging device and the mechanism that drives the valves that supply the vacuum to the components of the sheet handling system may be separate. It is then possible to stop the mechanism that drives the nudging device when it is not required to feed a sheet or group of sheets and restart the drive mechanism if sheets are to be fed. This can be done without interfering with the supply of vacuum to the remainder of the sheet handling system. That is, the nudging device is controlled independently from the sheet holding device.
- the activating means may controllably switch a single drive mechanism that drives both the valves and the nudging device.
- the drive mechanism when it is not required to feed sheets the drive mechanism would be stopped and the motion of the nudging device and the control valves would cease, thus preventing sheets from being fed. Reactivation of the mechanism would once again lead to sheets being fed.
- the nudging device continues to undergo reciprocal motion, but it no longer engages with the leading sheet of the stack of sheets. As a result, the foremost sheet is no longer urged toward the sheet exit. This helps prevent the unwanted feeding of sheets that sometimes occurred with the previous apparatus.
- the advantage of providing the nudging device as two sections is that the section coupled to the drive mechanism and hence the drive mechanism itself, can remain stationary with respect to the stack of sheets. This allows for easier construction of the assembly.
- the position controller comprises a fluid controlled piston cylinder arrangement, although any suitable means, such as a rack and pinion, could be used.
- any suitable means such as a rack and pinion, could be used.
- fluid controlled mechanisms are typically used elsewhere in the sheet handling system, it is easier to use a fluid controlled moving means than an alternative system.
- the nudging assembly would be associated with a control means for controlling whether the device is positioned in its extended or retracted position.
- the position controller comprises a piston cylinder arrangement
- the control mechanism controls the supply of fluid to the position controller. It may be possible to use a continuous fluid supply and control the pressure in the cylinder using a valve, although the control of the fluid supply is preferred as any valves are then located separate from the device. This makes general maintenance and repair work easier to carry out.
- the first section of the nudging device defines a cylinder whilst the second section defines a piston positioned within the cylinder.
- the preferred system has the advantage that the cylinder will remain stationary with respect to the stack of sheets and the remainder of the assembly. As it is required that the fluid source is coupled to the cylinder, the assembly is more easily achieved if the cylinder does not retract and extend.
- the nudging device also includes a means for normally urging the device into the retracted position. This is preferable to urging the device into the extended position in that should a fault occur with the system, the nudging device will generally retract and hence stop urging sheets toward the sheet exit. This helps prevent unwanted feeding of sheets.
- the urging means is typically a compression spring but an extension spring or similar means could be used.
- the nudging assembly can be used in a sheet handling system.
- Such systems can be utilized with various different types of sheets including banknotes and other paper, card and the like.
- the nudging device shown in the drawings comprises a first section 1 and a second section 2.
- the first section 1 is formed from a support block 3 which defines a cylinder 4.
- the cylinder 4 is connected to a source of air pressure via an inlet 5.
- the inlet 5 is connected to an air supply 51 via a spigot 56, right angle tube 57, nut 58, an air hose or tubing 64 and a solenoid controlled valve 52.
- washers 59,60,61 are provided to ensure the assembly remains air tight.
- the solenoid operated control valve 52 is controlled by a controller 62.
- the drive mechanism for the support block 3 includes a shaft 6 having screwed into it an eccentrically positioned bolt 7.
- the bolt 7 extends through bearings 8 which are mounted in a bore 9. Movement of the support block 3 in response to rotation of the shaft 6 is constrained to be along an elliptical path by means of a pivot pin 10 supporting a yoke 11.
- the pin and yoke are shown more clearly in Figure 2.
- the yoke 11 is positioned and constrained to move between blocks 12 and 13 which are mounted on block 3 by bolts 14.
- the second section 2 is formed from a metal block 15 having a U-shape so as to define arms 16 and 17 ( Figure 6). Rubber ends 18 and 19 are bonded to arms 16 and 17 respectively.
- Block 15 is connected to an actuating rod 20, which has a shaped end piece 21, via bolt 22.
- the actuating rod 20 forms part of a piston assembly and is mounted inside the cylinder 4.
- the piston assembly comprises a compression spring 23, a piston 24, a seal 25, and nuts 26.
- the components of the piston assembly are mounted on the actuating rod 20 as shown in Figure 7.
- the piston assembly is held in cylinder 4 by a sealing piece 27, which in turn is held in place by bolts 27a and 27b. The positioning of these bolts is shown in Figure 3.
- a guide piece 28 is provided. This is mounted on support block 3 by a bolt 29. The guide piece 28 engages with slot 30 defined by the nudging block 15 as shown in Figure 2.
- Extension of the nudging device is achieved by supplying air under pressure through the inlet 5 to the cylinder 4.
- the increase in pressure in the cylinder 4 causes the piston to move outwards thus compressing the spring 23.
- the piston 24 is fixed to the rod 21 this also moves, and as a result the second section 2 moves away from the first section 1, increasing the overall length of the nudging device.
- FIG 4 shows the nudging assembly in use in a sheet handling system.
- the sheet handling system comprises a face plate 31 and an end wall 35 on adjacent sides of a base 33.
- the sheet handling system also includes a sheet feed device 36 and a sheet holding device 37.
- the sheet feed device 36 comprises a peeler wheel 38, a pinch roller 39 and a contra roller 40, which are positioned adjacent to a sheet exit 41.
- the sheet holding device 37 comprises a manifold 42 connected to the face plate 31 by pins 43 and urged against the plate 31 by compression springs 44. Air or vacuum is supplied to bore 45 in manifold 42 from which it passes through a conduit 46 to an outlet 47 for communication with sheet 32 through apertures 53 in the face plate 31. These apertures are shown in Figure 5. Operation of such a sheet handling system is described in more detail in EP-A-0645328.
- FIG. 48 Further features of the sheet handling system include a rear wall 48 which supports a motor 49 connected via a follower block 50 to a guide wall 34. Upon activation of the motor 49, the guide wall 34 vibrates to aid sheet feeding.
- the guide wall 34 and the end wall 35 have shaped end pieces 36 and 37' respectively, these end pieces being shaped towards the sheet exit 41 to further aid sheet feeding.
- the ends 18 and 19 of the nudging device project through apertures 54 and 55 respectively.
- a stack of sheets is placed upon the base 33 between the guide wall 34 and the end wall 35. These sheets are urged towards the face plate 31 by an urging means, not shown, such as a sprung loaded plate.
- the controller 62 will respond to signals on a line 63 from the sheet handling mechanism to cause a vacuum to be supplied to the bore 45 from a vacuum source (not shown). This communicates with the sheets 32 via apertures 53 in the face plate 31 ( Figure 5). This sucks the leading sheet onto the face plate 31.
- the controller 62 also actuates the valve 52 so that air pressure is supplied from the pump 51 to the nudging device, causing the device to extend in length as previously described.
- the vacuum is once again applied to bore 45. This attracts the next sheet to face plate 31.
- the arms of the nudging device are fully retracted behind the face plate 31, they then return to their initial position and the cycle begins again.
- the vacuum applied through the apertures 53 and counter rotation of the roller 40 prevent more than one sheet being fed at the same time.
- the control valve 52 is controlled by the controller 62 to stop the supply of air from the supply 51 to the nudging device.
- the nudging device retracts in length under the influence of the spring 23 and, although it is still undergoing reciprocating motion, the ends 18 and 19 no longer project through the face plate 31 and cannot engage with the leading sheet of the stack. This situation is shown in Figure 2. With the nudging means no longer engaging sheets, the leading sheet will not be urged towards the sheet exit 41 and feeding of the sheet will cease. When the blockage in the feed mechanism is removed, the valve 52 will again be operated to supply air to the nudging device and feeding of sheets will once again commence.
Description
Claims (12)
- A nudging assembly for nudging the leading sheet in a stack of sheets, the assembly comprising a nudging device coupled to a drive mechanism which causes the device to undergo a reciprocal movement, characterised in that the assembly further comprises a control mechanism for controllably activating the nudging device into an operative condition in which the device periodically engages the leading sheet in the stack of sheets and urges it towards a sheet exit, the control mechanism including a position controller for moving the nudging device between an extended operative position in which the device periodically engages the leading sheet in the stack of sheets and urges it towards a sheet exit and a retracted non-operative position in which it cannot engage the stack while allowing the device to continue with its reciprocal movement; and in that the nudging device comprises two sections, wherein the first section is coupled to the drive mechanism and the second section is movably mounted to the first section for movement between the retracted and extended positions.
- A nudging assembly according to claim 1, wherein the position controller comprises a fluid controlled piston cylinder arrangement.
- A nudging assembly according to claim 2, wherein the fluid is air.
- A nudging assembly according to claim 2 or claim 3, wherein the first section of the nudging device defines a cylinder and the second section of the nudging device defines a piston that is positioned within the cylinder.
- A nudging assembly according to any of claims 2 to 4, wherein the control mechanism includes means for controlling the supply of fluid to the piston cylinder arrangement.
- A nudging assembly according to any of the preceding claims, wherein the nudging device further comprises means for normally urging the device into the retracted position.
- A nudging assembly according to claim 6, wherein the means for normally urging the device into a retracted position comprises a compression spring.
- A nudging assembly according to any of the preceding claims, wherein the control mechanism comprises means for controllably activating the nudging device drive mechanism.
- A sheet handling assembly comprising a sheet store for holding a stack of sheets; a sheet exit towards which individual sheets are urged from the stack of sheets; a sheet feed device for carrying individual sheets away from the sheet exit; and a nudging assembly according to any of the preceding claims for urging the sheets from the stack towards the sheet exit.
- A sheet handling assembly according to claim 9, when dependant on any of claims 2 to 7, the sheet store including a face plate against which sheets in the stack are urged, the face plate having one or more apertures through which the nudging device can protrude, wherein the control mechanism causes the nudging device to retract through the aperture(s) when the sheet feed device is not to feed sheets and to extend through the aperture(s) when the sheet feed device is to feed sheets.
- A sheet handling assembly according to claim 9 or claim 10, comprising a sheet holding device for holding the leading sheet in the stack of sheets, and wherein the sheet holding device is driven and controlled independently from the nudging assembly.
- A sheet feeding assembly according to claim 11, wherein the sheet holding device comprises means for selectively applying a vacuum to the leading sheet in the stack of sheets.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9526554.2A GB9526554D0 (en) | 1995-12-27 | 1995-12-27 | A sheet nudging assembly |
GB9526554 | 1995-12-27 | ||
PCT/GB1996/003123 WO1997024282A1 (en) | 1995-12-27 | 1996-12-18 | A sheet nudging assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0815046A1 EP0815046A1 (en) | 1998-01-07 |
EP0815046B1 true EP0815046B1 (en) | 2001-06-13 |
Family
ID=10786095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96942479A Expired - Lifetime EP0815046B1 (en) | 1995-12-27 | 1996-12-18 | A sheet nudging assembly |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0815046B1 (en) |
JP (1) | JP2000507906A (en) |
AU (1) | AU1184297A (en) |
BR (1) | BR9607423A (en) |
DE (1) | DE69613357T2 (en) |
ES (1) | ES2160850T3 (en) |
GB (1) | GB9526554D0 (en) |
RU (1) | RU2131390C1 (en) |
WO (1) | WO1997024282A1 (en) |
ZA (1) | ZA9610865B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6798899B2 (en) | 2001-01-04 | 2004-09-28 | Cummins-Allison Corp. | Document feeding method and apparatus |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4555103A (en) * | 1983-09-06 | 1985-11-26 | The Mead Corporation | Bottom level sheet feeding apparatus |
EP0287616A1 (en) * | 1986-10-14 | 1988-10-26 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Card feeding apparatus |
US5163666A (en) * | 1991-09-30 | 1992-11-17 | Xerox Corporation | Self-adjusting closed-loop friction feeder |
GB9320085D0 (en) * | 1993-09-29 | 1993-11-17 | Rue De Systems Ltd | Vacuum feed system |
-
1995
- 1995-12-27 GB GBGB9526554.2A patent/GB9526554D0/en active Pending
-
1996
- 1996-12-18 JP JP9524092A patent/JP2000507906A/en active Pending
- 1996-12-18 AU AU11842/97A patent/AU1184297A/en not_active Abandoned
- 1996-12-18 DE DE69613357T patent/DE69613357T2/en not_active Expired - Fee Related
- 1996-12-18 ES ES96942479T patent/ES2160850T3/en not_active Expired - Lifetime
- 1996-12-18 WO PCT/GB1996/003123 patent/WO1997024282A1/en active IP Right Grant
- 1996-12-18 EP EP96942479A patent/EP0815046B1/en not_active Expired - Lifetime
- 1996-12-18 RU RU97115930A patent/RU2131390C1/en active
- 1996-12-18 BR BR9607423A patent/BR9607423A/en not_active Application Discontinuation
- 1996-12-23 ZA ZA9610865A patent/ZA9610865B/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6798899B2 (en) | 2001-01-04 | 2004-09-28 | Cummins-Allison Corp. | Document feeding method and apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE69613357D1 (en) | 2001-07-19 |
DE69613357T2 (en) | 2001-10-31 |
RU2131390C1 (en) | 1999-06-10 |
WO1997024282A1 (en) | 1997-07-10 |
ZA9610865B (en) | 1997-12-23 |
ES2160850T3 (en) | 2001-11-16 |
JP2000507906A (en) | 2000-06-27 |
BR9607423A (en) | 1998-06-23 |
GB9526554D0 (en) | 1996-02-28 |
EP0815046A1 (en) | 1998-01-07 |
AU1184297A (en) | 1997-07-28 |
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