EP1725486A1 - Method and device for stacking flat mail items - Google Patents
Method and device for stacking flat mail itemsInfo
- Publication number
- EP1725486A1 EP1725486A1 EP05715822A EP05715822A EP1725486A1 EP 1725486 A1 EP1725486 A1 EP 1725486A1 EP 05715822 A EP05715822 A EP 05715822A EP 05715822 A EP05715822 A EP 05715822A EP 1725486 A1 EP1725486 A1 EP 1725486A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stacking
- stack
- stacked
- mass
- roll
- 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
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
- B65H31/00—Pile receivers
- B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
- B65H31/06—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled 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
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/13—Thickness
-
- 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
-
- 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
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/10—Mass, e.g. mass flow rate; Weight; Inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/30—Forces; Stresses
- B65H2515/34—Pressure, e.g. fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
- B65H2557/20—Calculating means; Controlling methods
- B65H2557/24—Calculating methods; Mathematic models
- B65H2557/242—Calculating methods; Mathematic models involving a particular data profile or curve
-
- 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 invention relates to a method and a device for stacking flat mail items.
- the consignments are transported one after the other in stack receptacles and stacked upright in these.
- a consignment to be stacked is conveyed to a stop wall by means of a stacking roller.
- the consignment to be stacked hits the consignment that is already stacked at an acute angle.
- a controlled underfloor belt and a stack support which is releasably coupled or separately driven are moved away from the stacking point as the stack grows.
- Each consignment to be stacked must be routed in such a way that it reaches the stop wall and its front and bottom edges are aligned with the goods that have already been stacked.
- the selected travel path is smaller than the determined thickness of the consignment to be stacked.
- an average compressibility of the partial stack is assumed. If the actual value deviates considerably from the assumed value due to incompressible mail items, there is nevertheless a disproportionate increase in the stack pressure, since the stacking force can only be measured after the mail item has hit the stack receptacle and then corrected.
- U.U. the consignment does not reach the stop wall of the stack holder. The spring effect of the stack of items cannot be taken into account.
- the partial stack is moved away from the stacking point by the full determined amount of the thickness + safety margin (measurement inaccuracies), the supporting function of the stacking roller is temporarily abandoned. Then it comes especially with large format broadcasts to tilt the stack, which dramatically affects the quality of the stack.
- the stacking forces are determined by stacking force measurement in the area of the stacking roller and the stacking force is set in a readjustment process by moving the underfloor belt in an area which is defined by threshold values for the permissible stacking force range.
- force is applied to the consignment by the constantly rotating stacking roller in the direction of transport, which can lead to damage, warping and twisting of the stacked goods.
- the invention has for its object to provide a method and a device for stacking flat mail items in a standing position in a Stapelauf, with which mail items with very different dimensions and masses are gently stacked aligned with their front and bottom edges.
- a mail item to be stacked is sent to a stack at a stacking point by means of a stacking roller which can be moved away from the stack against a spring force and which is driven in a controlled manner in the start / brake operation.
- Transported billboard. A controlled underfloor belt and a stack support that is detachably coupled or separately driven are removed from the
- Stacking place moved away The consignment to be stacked hits the previous consignment that has already been stacked at an acute angle.
- the mass of each item to be stacked is determined.
- Stacking pressures are measured with a measuring device arranged in the area of the stacking roll on the letter run level or on the stacking roll itself when the stacking roll has the amount to be stacked. has detected.
- the setpoints for the stack pressures and the braking curves of the stacking roller until the mail items have reached the stop are determined and stored on the basis of statistical analyzes, depending on the mass of the mail items to be stacked. In accordance with the braking curve assigned to the determined mass of mail, the respective mail is then braked by the stacking roller.
- the stacking force regardless of the properties of the stack that is already in the stack holder, never exceeds a value that prevents correct stacking without losing the supporting function of the stack.
- the mail items are braked in a defined manner in order to reduce the kinetic energy so that an optimally aligned stack results.
- Target stack pressure and then at an actual stack pressure measured on the stack roller and deviating from the target stack force are moved to this consignment to maintain the target stack pressure.
- the target batch pressure is dependent on the mass and thickness of the mail item currently to be stacked and the spectrum and the properties (mass, thickness, compressibility) of the mail items previously stacked. It is also advantageous if the mass of the consignments is determined indirectly by measuring the dimensions of the consignment, calculating the volume therefrom and multiplying it by a fixed mass factor per volume.
- the braking curve can advantageously be designed such that the peripheral speed of the stacking roll at the point in time when the shipment has reached the stop wall is inversely related to the mass of the shipment and that the stacking roll is subsequently brought to a standstill when the subsequent one The shipment is so far away that there is enough time to accelerate the stacking roll back to the nominal speed before the shipment has reached it.
- the subsequent shipment falls below a certain distance from the stack pickup, e.g. If the time to accelerate from 0 to the nominal speed is not sufficient, it is advantageous to accelerate the peripheral speed of the stacking roll immediately after the stacking of the respective shipment to the nominal speed of the means of transport.
- FIG. 1 shows a schematic top view of a device for stacking with a consignment to be stacked
- 2 shows a representation of the speed curve of the stacking roller over time
- 3 shows a representation of the course of the stacking force over time and over the position of the stacking roll.
- the stacking roll 1 is arranged to be displaceable in the direction of the mailing stack 18 to be generated. This is realized via a rocker 2. A linear arrangement is also possible.
- the stacking roller 1 is positioned in the rest position by means of a spring 3 with a defined spring characteristic in the direction of a stop 4.
- This stop 4 is adjustable, which enables calibration of the sensor.
- incoming mail items 19 cause the stacking roller 1 to be displaced to a greater or lesser extent.
- the size of the displacement produces an increase in the reaction force of the spring 3 and thus the stack pressure.
- a further stop 5 prevents the stacking roll 1 from overshoot when retracting, in particular, thicker mail items 19.
- a damping element 6 is attached to the rocker 2.
- the mail items 19 are transported one after the other and clamped between the stacking belts 11, 12 in a standing position in the direction of the stacking roll 1. So that the stacking can take place, the transport belt 12 directed in the direction of the partial stack 18 is deflected in front of the stacking device via a deflection roller 13, whereas the other stacking belt 11 is deflected only in front of the stacking roller 1 via a deflection roller 10.
- the transmission 19 is due to their kinetic "energy and by frictional forces at the stack belt 11 along the stacking roller 1 to the located there sta- pel 1 14, if no further broadcast yet are stacked, or piled against the last engaged transmission of the partial stapeis 18 passed at an acute angle and then held between this and the stacking roll 1.
- the stacking roll 1 has a direct drive 16.
- the maximum peripheral speed of the stacking roll 1 corresponds to the transport speed of the items 19 to be stacked during the stacking phase.
- the stack pressure that forms between the first mailing of the stack 18 and the stacking roll 1 must be so great that each mailing safely reaches between the stacking roll 1 and the stacking support 14 or the uppermost mailing of the stack 18 up to the stop wall 15, where the kinetic residual energy of the broadcast 19 is reduced.
- the stacking roll 1 is displaced more or less by incoming consignments 19 depending on the consignment thickness and the stack compressibility, so that the stacking pressure does not become too high when stacking a consignment 19.
- the stack pressure which arises slightly in accordance with the spring characteristic of the spring 3 is measured and adjusted to the desired value (readjusted) by moving a stack support 14 and / or an underfloor belt 17 and thus the partial stack 18.
- a suitable sensor for detecting the stack pressure as the reaction force of the stacking roller 1 is provided for measuring the stack pressure.
- the sensor can be a displacement transducer 7 in the area of the rocker arm 2, which uses the spring characteristic to determine the stack pressure (FIG. 1) and feeds it to the controller 9.
- Another possibility is a force sensor connected in series with the spring 3. Because of the very different consignment properties (e.g. dimension, mass, surface quality), the stacking roll 1 is also in
- Dependency of these significant properties of the mail items and the position of the incoming mail item is defined in a rotationally accelerated and braked manner. As a result, heavy mail items 19 are braked so that they are not compressed too much. Because the stacking roll 1 does not run continuously, mail items 19 with sensitive surfaces, such as plastic, are not damaged. They also go away not, which can result in the subsequent mail items 19 not being able to enter the stacking device.
- the speed control of the stacking roll 1 takes place according to FIG. 2 as a function of the mail mass. If the consignment 19 is transported in the direction of the stacking roll 1, the stacking roll 1 is accelerated in time, regardless of the mail item mass, so that the transport speed is reached on the circumference before the mailing 19 comes into contact with the stacking roll 1. If the consignment 19 is securely engaged by the stacking roll 1, it is braked.
- Delay i.e. the braking ramp is selected higher for consignments 19 with a large mass than for thin, light consignments 19. If the consignment 19 has arrived at the stop wall 15 of the stack receptacle, after a short delay in order to prevent rebound effects, the stacking roller 1 is used to avoid the Stress on the uppermost stacked mail item is completely braked over a longer period of time by the rotating stacking roll 1, provided that no further mail item 19 is fed into the stack receptacle at a specified distance.
- the stacking roll 1 is not braked completely, but continues to run at the speed reached at that point in time until the following consignment 19 has been transported to such an extent that the stacking roll 1 must be accelerated again in order to be on time to be at transport speed again for the arrival of the mail item 19 on the stacking roll 1.
- the stack pressure is controlled by moving the stack support 14 and / or the underfloor belt 17.
- the advance of the underfloor belt 17 / stack support 14 is calculated and started. The feed has ended before the mail item 19 has reached the stacking roll 1.
- the feed is calculated from the thickness of the mail item 19 and the stacking pressure which is to be set when the mail item 19 is engaged on the stacking roll 1 and is thus deflected by the mail item 19.
- the path is calculated by which the underfloor belt 17 must move the stack of mail items 18 away from the stacking roll 1 in order to change the stacking pressure accordingly. If the stack pressure is to be increased, then the feed results from the consignment thickness, minus the distance that must be moved to the desired stack pressure in order to increase it. If the stack pressure is to be reduced, the feed results from the consignment thickness, plus the distance that has to be moved to the desired stack pressure in order to reduce it.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004012379A DE102004012379B4 (en) | 2004-03-13 | 2004-03-13 | Method and device for stacking flat items |
PCT/EP2005/002422 WO2005087640A1 (en) | 2004-03-13 | 2005-03-08 | Method and device for stacking flat mail items |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1725486A1 true EP1725486A1 (en) | 2006-11-29 |
EP1725486B1 EP1725486B1 (en) | 2008-05-21 |
Family
ID=34961772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05715822A Expired - Fee Related EP1725486B1 (en) | 2004-03-13 | 2005-03-08 | Method and device for stacking flat mail items |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070176348A1 (en) |
EP (1) | EP1725486B1 (en) |
JP (1) | JP2007529384A (en) |
CN (1) | CN1930070A (en) |
DE (2) | DE102004012379B4 (en) |
WO (1) | WO2005087640A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070138733A1 (en) * | 2005-12-16 | 2007-06-21 | Chris Gray | Pick mechanism |
DE102006031891B4 (en) * | 2006-07-07 | 2008-04-17 | Siemens Ag | Method and stacking device |
US8251281B1 (en) * | 2008-06-27 | 2012-08-28 | Diebold Self-Service Systems Division Of Diebold, Incorporated | Automated banking system controlled responsive to data bearing records |
DE102011005230B4 (en) | 2010-03-08 | 2013-07-25 | Siemens Aktiengesellschaft | Device for secure stacking of flat objects |
FR2984772B1 (en) * | 2011-12-22 | 2014-02-14 | Solystic | DEVICE AND METHOD FOR STACKING AND AUTOMATICALLY LOADING SINGLE-PANEL OBJECTS IN A MULTI-COMPARTMENT BIN, POSTAL SORTING MACHINE, AND POSTAL SORTING METHOD |
FR2984774B1 (en) * | 2011-12-23 | 2014-02-14 | Solystic | FLAT OBJECT SORTING MACHINE HAVING HETEROGENEOUS PHYSICAL CHARACTERISTICS, AND METHOD OF SORTING THESE FLAT OBJECTS |
DE102012202082A1 (en) | 2012-02-13 | 2013-08-14 | Siemens Aktiengesellschaft | Sorting system with several sorting points, which have their own turn-off drives |
US9989514B2 (en) * | 2014-10-29 | 2018-06-05 | Postis Llc | Poly bag and polywrap detection system |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3604704A (en) * | 1969-09-22 | 1971-09-14 | Ibm | Stacker for document cards |
US4019730A (en) * | 1975-06-05 | 1977-04-26 | Pitney-Bowes, Inc. | Envelope stacking system |
JPS5874455A (en) * | 1981-10-26 | 1983-05-04 | Toshiba Corp | Paper sheets accumulation device |
NL181338C (en) * | 1983-06-13 | 1987-08-03 | Nederlanden Staat | CONTROL DEVICE FOR EXAMINING LETTERS. |
JPH0295627A (en) * | 1988-09-30 | 1990-04-06 | Omron Tateisi Electron Co | Paper sheet takeup and accumulation device |
FR2674837B1 (en) * | 1991-04-04 | 1993-07-30 | Darchis Pierre | DEVICE FOR FORMING A STACK OF FLAT OBJECTS, ESPECIALLY MAIL ENVELOPES. |
US5372360A (en) * | 1991-06-07 | 1994-12-13 | Bell & Howell Phillipsburg Company | Apparatus for stacking sheet-like articles |
US5246223A (en) * | 1992-01-03 | 1993-09-21 | Bell & Howell Company | Automatic magazine speed control for document processing system |
US5409207A (en) * | 1993-07-16 | 1995-04-25 | Moore Business Forms, Inc. | Stacking of flexible planar articles |
DE29508063U1 (en) * | 1995-05-16 | 1995-09-14 | Trw Repa Gmbh | Cover for an airbag restraint system |
DE19518442A1 (en) * | 1995-05-19 | 1996-11-21 | Licentia Gmbh | Distribution compartment route for flat consignments |
FR2741055B1 (en) * | 1995-11-13 | 1998-01-02 | Realisations Etudes Et Commerc | DEVICE FOR REGULATING THE STACKING PRESSURE FOR A HORIZONTAL STACKING DEVICE OF NOTEBOOKS |
US6065746A (en) * | 1997-02-18 | 2000-05-23 | Unisys Corporation | Apparatus and method of automatically adjusting a document deceleration rate |
DE10118758C1 (en) * | 2001-04-17 | 2002-05-23 | Siemens Production & Logistics | Stacking device, for flat flexible objects, has at least two diverting elements at side of track of object |
DE10119956C1 (en) * | 2001-04-24 | 2002-11-14 | Siemens Production & Logistics | Letter stacking device has spring loaded stack plate provided with guide element having braking surface exerting braking effect upon deflection of stack plate |
US6588743B2 (en) * | 2001-10-25 | 2003-07-08 | Pitney Bowes Inc. | Adjustable urging force system for stacker paddle |
EP1352865B1 (en) * | 2002-04-12 | 2011-09-28 | Kabushiki Kaisha Toshiba | Sheet collection apparatus |
DE10223349B4 (en) * | 2002-05-25 | 2004-07-01 | Siemens Ag | Method and device for stacking flat items |
DE10236952B3 (en) * | 2002-08-13 | 2004-03-25 | Siemens Ag | Device for stacking flat items in a stack holder |
US6959923B2 (en) * | 2003-02-10 | 2005-11-01 | Pitney Bowes Inc. | Method and device for improving stacker conveyor speed in a mail stacker |
-
2004
- 2004-03-13 DE DE102004012379A patent/DE102004012379B4/en not_active Expired - Fee Related
-
2005
- 2005-03-08 US US10/592,470 patent/US20070176348A1/en not_active Abandoned
- 2005-03-08 CN CNA200580008114XA patent/CN1930070A/en active Pending
- 2005-03-08 JP JP2007502268A patent/JP2007529384A/en not_active Withdrawn
- 2005-03-08 EP EP05715822A patent/EP1725486B1/en not_active Expired - Fee Related
- 2005-03-08 WO PCT/EP2005/002422 patent/WO2005087640A1/en active IP Right Grant
- 2005-03-08 DE DE502005004187T patent/DE502005004187D1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2005087640A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005087640A1 (en) | 2005-09-22 |
CN1930070A (en) | 2007-03-14 |
DE502005004187D1 (en) | 2008-07-03 |
EP1725486B1 (en) | 2008-05-21 |
DE102004012379A1 (en) | 2005-10-06 |
JP2007529384A (en) | 2007-10-25 |
US20070176348A1 (en) | 2007-08-02 |
DE102004012379B4 (en) | 2006-01-19 |
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