EP1414724A1 - Device for the delivery of flat objects - Google Patents
Device for the delivery of flat objectsInfo
- Publication number
- EP1414724A1 EP1414724A1 EP02764538A EP02764538A EP1414724A1 EP 1414724 A1 EP1414724 A1 EP 1414724A1 EP 02764538 A EP02764538 A EP 02764538A EP 02764538 A EP02764538 A EP 02764538A EP 1414724 A1 EP1414724 A1 EP 1414724A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- objects
- friction
- negative pressure
- conveying means
- 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
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
- B65H1/14—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising positively-acting mechanical devices
-
- 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
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/40—Movement
-
- 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
- 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 device for feeding flat objects such as e.g. Letters, large letters, cards, to a suction separation device according to the preamble of claim 1.
- separating devices for flat objects which pull individual objects from the end of the stack from a stack of flat objects placed on an approximately horizontally arranged conveyor belt or chain as a means of transport, it is customary to remove the stack of the separating device (VE ) feed.
- VE separating device
- These VE use friction technology among other things.
- the pressure of the first object was achieved by the stack behind it pressing the first object onto the trigger element (s) (AE).
- AE trigger element
- the levers 3 act statically as a brake between the trigger system and the object to be removed and reduce the frictional force during of the withdrawal process. Furthermore, the lever 3 does not “measure” the stack 4 at the moment the object is sucked onto the friction elements, but only the object lying against it. Only when the object is pulled out of the lever mechanism can the lever 3 be able to stack 4. In the sense of a high deduction, the tracking system must be very fast and / or integrate over several cycles.
- the invention is therefore based on the object of providing a device for feeding flat objects to a friction-suction separating device, in which the measuring means detecting the objects at the trigger point for controlling the conveying means transporting the objects to the trigger point have no negative repercussions the deduction process.
- the conveying means By using a sensor connected to the drive control of the conveying means, which measures the negative pressure in the suction pan, the greater the negative pressure, i.e. depending on the measured negative pressure and thus on the distance and / or the inclined position of the foremost object. the lower the absolute pressure, the smaller the distance and / or the inclined position, the conveying means can be controlled in such a way that the foremost object on / on the friction release means has the smallest possible inclined position with the lowest possible stack pressure, will have a negative effect on the pulling-off process effective measuring influences, such as when using feelers, are avoided.
- the structure of the measuring device is simplified.
- the conveying means falls below a specified vacuum, i.e. the measured absolute pressure is above the specified pressure value, is moved at a constant speed in the direction of the extraction point and that when another specified vacuum is exceeded, i.e. the measured absolute
- Pressure is below the specified pressure value, which stops the funding. Since the distance of the objects from the friction trigger means, from which they are drawn to the friction trigger means by the negative pressure, strongly depends on the mass of the objects, it is advantageous to integrate the measured values of the sensor in the drive control and the conveyor means accordingly the current integrated values.
- suction trays each with a sensor connected to the drive control for determining the inclined position and the movement of the conveying means derived therefrom, are arranged one above the other for high mail items.
- 1 shows a schematic plan view of a friction-suction separating device with a sensor
- 2 shows a schematic plan view of a friction
- a friction-suction separation device which has a circumferential discharge belt 1 with suction openings as the friction-removal means.
- a suction trough 2 which is connected to a vacuum source 8, is located directly behind the area of the take-off belt 1 with a high coefficient of friction.
- a sensor 7 measuring the negative pressure in the suction pan is located on the suction pan 2.
- the stack 4 of flat objects stands on a conveyor belt 5 as a conveyor and is supported on the back on a bearing surface, not shown, which can be moved with the conveyor belt 5 in the direction of the separating device.
- the stack 4 is aligned on a stop surface 6 standing laterally on the conveyor belt 5.
- the sensor 7 on the suction trough 2 constantly measures the negative pressure prevailing in the suction trough 2.
- the negative pressure is realized by an externally arranged vacuum source 8 (suction pump).
- the objects are loosely leaning against the trigger unit or are positioned so that they lean back in the direction of the contact surface.
- the extraction process is started and the vacuum source 8 generates a vacuum. If an object lies flat against the fume cupboard, a vacuum that is specific to the product range will develop.
- the consignment is not lying flat, but is in one of the two above-mentioned types for the extraction unit, a slight negative pressure will form, ie the absolute pressure will increase, since secondary air is drawn depending on the gap size.
- the prevailing negative pressure is therefore a direct expression of the position of the objects in relation to the trigger unit.
- the sensor 7 registers the vacuum conditions and signals to the control system if the vacuum in the sump 2 becomes too low, ie if the measured absolute pressure exceeds the nominal value.
- the drive control then starts the conveyor belt 5.
- the conveyor belt 5 moves the stack 4 in the direction of the take-off belt 1.
- the next object is transported into the suction area, where it is gripped by the suction air and sucked onto the take-off belt 1. Because the object now lies parallel to the suction pan opening, the negative pressure increases, ie the absolute measured pressure falls, the measured value of the sensor 7 reaches an adjustable setpoint and the conveyor belt 5 is thus switched off by the drive control and the object is pulled off.
- An average value is formed from the sensor signal. It is also possible to choose an analog system and to drive the conveyor belt 5 as continuously as possible at a controlled speed. In known trigger devices, for example, approximately 10 ... 15 seconds / second are deducted with an average thickness of approximately 2 mm. This means that if the consignments are evenly distributed, the stack must be tracked at an average speed of at least 20 mm / sec. If it is desired to pull off thicker objects, the sum of the consignment thicknesses deducted per unit of time must be used as the basis for the drive and control design. Depending on the suction behavior of the objects, it must be decided whether a digital or analog drive control is preferable.
- a stack may only need if 10-15 sheets / sec are to be removed approx. 1 ... 2.5 mm / sec.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10139231 | 2001-08-09 | ||
DE10139231A DE10139231C1 (en) | 2001-08-09 | 2001-08-09 | Device for feeding flat objects |
PCT/DE2002/002882 WO2003016185A1 (en) | 2001-08-09 | 2002-08-06 | Device for the delivery of flat objects |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1414724A1 true EP1414724A1 (en) | 2004-05-06 |
EP1414724B1 EP1414724B1 (en) | 2005-12-07 |
Family
ID=7694965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02764538A Expired - Fee Related EP1414724B1 (en) | 2001-08-09 | 2002-08-06 | Device for the delivery of flat objects |
Country Status (5)
Country | Link |
---|---|
US (1) | US7108258B2 (en) |
EP (1) | EP1414724B1 (en) |
JP (1) | JP2004538224A (en) |
DE (2) | DE10139231C1 (en) |
WO (1) | WO2003016185A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050040584A1 (en) * | 2003-08-19 | 2005-02-24 | Canon Kabushiki Kaisha | Sheet feeding apparatus and image forming apparatus |
JP4649340B2 (en) * | 2006-01-20 | 2011-03-09 | キヤノン株式会社 | Sheet feeding apparatus and image forming apparatus |
KR100902983B1 (en) * | 2006-05-11 | 2009-06-15 | 가부시끼가이샤 도시바 | Paper sheet separating and take-out device |
JP2008273666A (en) * | 2007-04-26 | 2008-11-13 | Toshiba Corp | Paper sheet take-out device |
DE102009039062A1 (en) | 2009-08-27 | 2011-03-10 | Siemens Aktiengesellschaft | Device and method for separating flat objects by means of two singler and a length detector |
DE102009039067A1 (en) * | 2009-08-27 | 2011-03-10 | Siemens Aktiengesellschaft | Device and method for separating flat objects by means of two laterally offset singler |
US9061849B2 (en) | 2013-03-14 | 2015-06-23 | United States Postal Service | System and method of article feeder operation |
US9340377B2 (en) * | 2013-03-12 | 2016-05-17 | United States Postal Service | System and method of automatic feeder stack management |
US9044783B2 (en) | 2013-03-12 | 2015-06-02 | The United States Postal Service | System and method of unloading a container of items |
CN110605251B (en) * | 2019-10-30 | 2024-07-16 | 澳帕曼织带(昆山)有限公司 | Ribbon thickness detection device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5154407A (en) * | 1989-10-04 | 1992-10-13 | Fuji Photo Film Co., Ltd. | Cut sheet feeder with suction device |
US5392976A (en) * | 1992-05-19 | 1995-02-28 | Hightree Media Corporation | Servo system |
FR2696163B1 (en) * | 1992-09-25 | 1994-11-04 | Cga Hbs | Stacker for flat articles including a tracker. |
DE19612567C2 (en) * | 1996-03-29 | 1999-04-29 | Siemens Ag | Device for aligning flat items |
JPH1120959A (en) * | 1997-07-02 | 1999-01-26 | Canon Inc | Sheet feeding device and image reading device |
JP2990185B1 (en) * | 1998-10-02 | 1999-12-13 | 日本電気株式会社 | Paper feeder |
US6443444B1 (en) * | 1999-10-04 | 2002-09-03 | Lockhead Martin Corporation | Singulation mechanism |
JP3586608B2 (en) * | 2000-01-19 | 2004-11-10 | 日本電気株式会社 | Paper sheet supply apparatus and supply method |
US6702275B2 (en) * | 2000-04-03 | 2004-03-09 | Matsushita Electric Industrial Co., Ltd. | Paper-leaves separating/supplying method and apparatus |
US6575450B2 (en) * | 2001-01-30 | 2003-06-10 | Lockheed Martin Corporation | Singulation mechanism |
-
2001
- 2001-08-09 DE DE10139231A patent/DE10139231C1/en not_active Expired - Fee Related
-
2002
- 2002-08-06 WO PCT/DE2002/002882 patent/WO2003016185A1/en active IP Right Grant
- 2002-08-06 EP EP02764538A patent/EP1414724B1/en not_active Expired - Fee Related
- 2002-08-06 DE DE50205214T patent/DE50205214D1/en not_active Expired - Lifetime
- 2002-08-06 JP JP2003521124A patent/JP2004538224A/en active Pending
-
2004
- 2004-01-26 US US10/763,215 patent/US7108258B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03016185A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7108258B2 (en) | 2006-09-19 |
WO2003016185A1 (en) | 2003-02-27 |
EP1414724B1 (en) | 2005-12-07 |
DE10139231C1 (en) | 2003-03-13 |
JP2004538224A (en) | 2004-12-24 |
US20040201161A1 (en) | 2004-10-14 |
DE50205214D1 (en) | 2006-01-12 |
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