US20110214951A1 - Brake Device For Braking and Depositing Blanks Extending Laminarly - Google Patents

Brake Device For Braking and Depositing Blanks Extending Laminarly Download PDF

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Publication number
US20110214951A1
US20110214951A1 US13/128,997 US200913128997A US2011214951A1 US 20110214951 A1 US20110214951 A1 US 20110214951A1 US 200913128997 A US200913128997 A US 200913128997A US 2011214951 A1 US2011214951 A1 US 2011214951A1
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US
United States
Prior art keywords
braking
roller
workpieces
workpiece
braking device
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.)
Abandoned
Application number
US13/128,997
Other languages
English (en)
Inventor
Hans-Dieter Jacobi
Peter Prante
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rotodecor Maschinen und Anlagenbau GmbH
Original Assignee
Rotodecor Maschinen und Anlagenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rotodecor Maschinen und Anlagenbau GmbH filed Critical Rotodecor Maschinen und Anlagenbau GmbH
Assigned to Rotodecor GMBH Maschinen-und Anlagenbau reassignment Rotodecor GMBH Maschinen-und Anlagenbau ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JACOBI, HANS-DIETER, PRANTE, PETER
Publication of US20110214951A1 publication Critical patent/US20110214951A1/en
Abandoned legal-status Critical Current

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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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/443—Moving, forwarding, guiding material by acting on surface of handled material
    • B65H2301/4432—Moving, forwarding, guiding material by acting on surface of handled material by means having an operating surface contacting only one face of the material, e.g. roller
    • B65H2301/44322—Moving, forwarding, guiding material by acting on surface of handled material by means having an operating surface contacting only one face of the material, e.g. roller belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/111—Details of cross-section or profile shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/141—Roller pairs with particular shape of cross profile
    • 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
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1313—Edges trailing 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
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard

Definitions

  • the invention is directed to a braking device for braking two-dimensionally extending workpieces, particularly such as blanks of cardboard packaging, or the like, of flexible materials that are fed so as to be spaced apart from one another and for depositing them on a stack.
  • a variety of devices for processing two-dimensionally extending materials e.g., printers and embossing machinery, cutting devices, and comparable production lines have high processing speeds and a high transporting speed for transporting the material to be processed or that has been processed. Speeds of about 10 m/second are quite common.
  • the problem arising at the end of a production line of this kind is that of braking and depositing the workpieces particularly made of flexible material such as blanks or the like in a manner that is not stressful to the material.
  • Braking the workpieces by having them run against stops is not gentle on the material. Further, it is seldom possible to deposit the workpieces in a neatly stacked manner. Usually, the braked workpieces then simply fall into a collecting bin. Braking systems of this kind for mostly robust workpieces are not suitable for flexible materials such as sheets that are to be deposited in stacks, because such materials are deformed when striking a stop. This results in an unacceptable, uneven depositing of the workpieces on a stack.
  • a so-called rear edge braking system is described in DE 20 2007 012 356 U1 particularly for braking sheets of paper, cardboard, or the like which resorts to an elaborate pneumatic sheet braking system.
  • One embodiment of the invention provides a braking device of the type mentioned above constructed in a mechanically simple manner to brake fed workpieces in a gentle manner and which can be adapted in a simple manner to a wide variety of workpieces.
  • a braking device for braking and depositing two-dimensionally extending workpieces, particularly cardboard packaging, which are fed so as to be spaced apart from one another in that the workpieces are fed to a braking roller whose circumferential speed is slower than the feed speed of the workpieces, and in that at least one cam presses a workpiece passing the braking roller against the braking roller at the end of the workpiece in the feed direction and reduces the speed of the workpiece.
  • the braking device provides a number of advantages.
  • it is best suited to cardboard packaging or other non-self-supporting workpieces comprising, e.g., foils, which would be deformed by running against a stop. This deformation is prevented in that the end of the workpiece is grasped between the cam and the braking roller.
  • a non-self-supporting, easily deformable workpiece such as cardboard or the like maintains an extended position, or the workpiece has the time to resume an extended position before being deposited on a stack.
  • the cam can project over a roller.
  • This simple constructional solution allows the speed components comprising roller and braking roller to be adapted to one another simply by adjusting a drive.
  • the circumferential speed of the roller is adjusted in such a way that the cam executes a revolution in the time that it takes to feed a workpiece. Therefore, when the fed workpieces are advantageously uniformly spaced, it can be ensured in a simple manner that the cam always only engages the end of the workpiece in order to press the workpiece against the braking roller and therefore brake it.
  • the preferably rounded contact pressing surface of the cam pressing the workpiece against the braking roller and the surface of the braking roller can run one upon the other in the manner of the surfaces of a pair of rollers, there routinely being a difference in speed in the circumferential speeds of the contact pressing surface of the cam and the braking roller.
  • the forces brought about in this way on the workpiece can be minimized through the selection of and shape of the cam surface so that the workpiece cannot be damaged by the braking process.
  • the roller is arranged above the braking roller, and the axes of the roller and of the braking roller lie in a common plane transverse to the feed direction.
  • the horizontal arrangement results in a gap between the roller and the braking roller which, in case of a constant circumferential speed of the roller and, therefore, of the cam, is periodically opened and closed by the cam.
  • the feed of the workpieces is carried out in a plane extending between the roller and the braking roller so that the workpiece enters the open gap and the end of the workpiece is only pressed down on the braking roller by the cam when the gap is closed.
  • flexible workpieces such as sheets of cardboard or the like, an upwardly directed deflection is brought about owing to the initially free entry of the workpiece into the gap between the roller and the braking roller and the downward movement of the end of the workpiece during braking.
  • the cam and/or the roller are/is operationally exchangeable. This removes the difficulties in adapting to the material thickness of the workpiece because the height of the cam above the roller can be adjusted depending upon the material thickness of the workpiece.
  • the surface condition of the workpiece can be taken into account by the choice of material for the cam, for example, stainless steel, plastic, or rubber, so that the workpieces are pressed against carefully even when there is a speed difference in the circumferential speeds of the braking roller and cam.
  • This can also be taken into account by the surface condition of the contact pressing surface, e.g., by a coating or texture, for example, scales, grooves, or the like.
  • the cam is displaceable transverse to the feed direction.
  • the cam can be secured so as to be axially displaceable on the roller so that printed cardboard packaging, for example, can be grasped and braked outside the actual print area. In this way, the print image of cardboard packaging of this kind remains reliably unimpaired. Further, this step can take into account punched out portions for a carrying handle.
  • the angular speed of the roller supporting the cam is adjustable.
  • the time interval within which the open gap remains between the braking roller and the roller can be preset so that a workpiece can enter into this gap unimpeded.
  • the cam first presses the end of the workpiece down against the braking roller at the end of the workpiece. This step takes into account different lengths of the workpieces.
  • sensors can be provided to measure the length of and/or distances between workpieces in feed direction, and a control of the angular speed is adjusted in such a way that the cam presses each workpiece against the braking roller at the end of the workpiece. Accordingly, it is possible to adapt to different lengths of the workpieces in a simple manner, and nonuniformities in the process of feeding the workpieces can also be compensated without difficulty. The point of application of the cams on the workpieces can also be adjusted.
  • Cams and guide belts can be staggered transverse to the feed direction.
  • this guide belt is enclosed by two cams simultaneously.
  • Particularly unstable workpieces such as cardboard packaging or comparable sheets which routinely bend during the braking process are reliably guided and deposited in this way.
  • the circumferential speed of the guide belt approximately corresponds to, particularly is also equal to, the feed speed of the workpieces, so that the workpieces do not undergo any reduction in speed when entering the gap between the roller and braking roller, for example, when sheets contact the guide belt due to bending.
  • a driveshaft of a drive and a driveshaft of the guide belt can be connected to one another by a belt so as to obviate an independent drive of the guide belt.
  • the idea in this case is, in particular, that the driving of the guide belt is carried out by a belt drive jointly with the driving of the conveyor devices such as conveyor belts, or the like, which feed the workpieces to the braking device.
  • the braking device mentioned above is arranged at the end. After stacking the workpieces, they can be transferred to a stack turning unit which then turns the stack and deposits it on a conveyor belt or other conveying device. Further, in order to increase capacity a points switch can be arranged upstream of two braking devices according to the invention. In so doing, the braking devices following the points switch are preferably arranged so as to be offset in height and a transfer device preferably transfers the stacked bundles from the braking devices to a stack turning unit. This makes it possible to construct a high-capacity production line in a space-saving manner.
  • FIG. 1 is an isometric diagram of a braking device according to the invention
  • FIG. 2 is a side view the breaking device of FIG. 1 ;
  • FIG. 3 is a top view the breaking device of FIG. 1 ;
  • FIG. 4 is an enlarged view of a portion of the breaking device of FIG. 1 ;
  • FIG. 5 is an illustration of the use of the braking device.
  • FIG. 1 is an isometric diagram showing a braking device 1 according to one embodiment of the invention for braking and depositing two-dimensionally extending workpieces 4 , preferably cardboard packaging which is, for example, printed, punched and singled in a production line 2 , not shown in more detail, which are fed particularly in a uniformly spaced manner to the braking device at high speed, e.g., 500 m/min and with a high cycle rate of about 10 pieces/sec.
  • high speed e.g. 500 m/min and with a high cycle rate of about 10 pieces/sec.
  • Workpieces 4 (shown in FIG. 4 ) of this kind which are braked by the braking device 1 , are deposited, e.g., in a storage 3 so as to be stacked in an exact manner.
  • the workpieces 4 are fed to a braking roller 7 in the feed direction 8 indicated by the arrow on a rod linkage 5 of a conveyor belt 6 .
  • the braking roller 7 rotates according to the arrow 9 and has a belt drive 10 has a circumferential speed which is appreciably lower than the feed speed at which the sheets 4 are fed in the feed direction 8 .
  • Another roller 11 is arranged above the braking roller 7 , the axis 12 of the braking roller 7 being arranged in a plane transverse to the feed direction 8 with the axis 13 of the roller 11 .
  • the feed of the workpieces 4 is carried out in a plane 22 of the gap between the roller 11 and the braking roller 7 .
  • Two cams 14 , 15 project above the roller 11 and, as is shown in FIGS. 3 and 4 , press the end of a workpiece 4 passing the braking roller 7 downward against the braking roller 7 and accordingly reduce the speed of the workpiece 4 .
  • the angular speed of the shaft 11 is adjusted in such a way that the cams 14 , 15 always press the workpiece 4 against the braking roller 7 at the end of the workpiece 4 , wherein a revolution of the cams 14 , 15 lasts for the duration of the feed of a workpiece 4 taking into account the distance between the workpieces 4 .
  • the cams 14 , 15 or, as the case may be, the roller 11 in its entirety can be exchanged in operation and/or the cams can be displaceable transverse to the feed direction 8 so that it is possible to adapt to different workpieces 4 without difficulty.
  • the cams 14 , 15 are adjusted in such a way that a workpiece 4 of this kind can be pressed at its end against the braking roller 7 on unprinted surfaces by the cams 14 , 15 while passing the braking roller 7 . This precludes damage to the print image on the upper side of the workpiece 4 .
  • Geometries of the workpieces 4 e.g., punched out portions, can also be taken into account in a corresponding manner.
  • the preferably rounded contact pressing surface 16 can be adapted to a coating or surface texture on the workpieces 4 by a suitable choice of material for the cams 14 , 15 for purposes of a careful pressing against the braking roller 7 .
  • the angular speed of the roller 11 is adjustable so that the interval in which the cams 14 , 15 strike the braking roller 7 while enclosing a workpiece 4 is adjustable.
  • sensors not shown in the drawing, can measure the length of workpieces and/or the distance between workpieces 4 in the feed direction 8 , whereupon a control adjusts the angular speed of the shaft 11 in such a way that the cams 14 , 15 press each workpiece 4 down against the braking roller 7 exactly at its end so as to be synchronized with the feed.
  • the workpieces 4 When the workpieces 4 are sheets which bend relatively easily, they will bend, as is shown in FIG. 4 , when entering the free gap between the roller 11 and the braking roller 7 and also when braked and, after being released by the cams 14 , 15 , will queue until their front edge strikes a guide belt 17 revolving above the workpieces 4 . Owing to the high cycle rate of braked workpieces 4 , these workpieces 4 will lie one on top of the other so as to be spaced in a shingled manner as is shown and will be fed to the storage 3 by the guide belt 17 and deposited in a falling motion so as to be neatly stacked.
  • FIG. 3 further shows that the cams 14 , 15 and the guide belt 17 are staggered; in this case, the guide belt 17 is arranged centrally between the cams 14 , 15 simultaneously.
  • the circumferential speed of the guide belt 17 corresponds substantially, preferably exactly, to the feed speed of the workpieces 4 in feed direction 8 in front of the braking device 1 . Accordingly, it is ensured that there will be no reduction in the speed of the workpiece 4 when the workpiece 4 bends as it freely enters the gap between the braking roller 7 and the roller 11 and braking and its front edge contacts the guide belt 17 .
  • a driving of the guide belt 17 can be carried out in a simple manner by a belt 18 which is driven by an electric-motor drive 19 of the feed devices of the workpieces 4 along with the conveyor belt 6 .
  • the braking roller 7 and the roller 11 each have their own drive 20 , 21 so that the circumferential speeds of the two rollers 7 , 11 can be adjusted independently from one another in a simple manner.
  • FIG. 5 shows a transporting device 23 on the right-hand side, e.g., two conveyor belts enclosing a workpiece, at the end of a production line, not shown in more detail, for two-dimensionally extending workpieces.
  • the braking devices 25 , 26 deposit the workpieces in a braked manner as stacks 27 , 28 .
  • This stacking of the workpieces is carried out so as to be offset in time so that one of the stacks 27 , 28 , when finished, can be transferred to a vertically adjustable transfer device 31 by transporting devices 29 , 30 .
  • This transfer device 31 which is provided with a vertically adjustable conveying device 32 shown in two positions in FIG. 5 , transfers stacks 33 to a stack turning unit 34 which, after the received stacks have been turned, deposits the stacks, for example, on a transporting device 35 for shipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US13/128,997 2008-11-20 2009-11-16 Brake Device For Braking and Depositing Blanks Extending Laminarly Abandoned US20110214951A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008058337.5 2008-11-20
DE102008058337A DE102008058337A1 (de) 2008-11-20 2008-11-20 Bremsvorrichtung für das Abbremsen und Ablegen flächenhaft sich erstreckender Zuschnitte
PCT/DE2009/001606 WO2010057466A1 (fr) 2008-11-20 2009-11-16 Dispositif de freinage pour freiner et déposer à plat des pièces découpées étendues

Publications (1)

Publication Number Publication Date
US20110214951A1 true US20110214951A1 (en) 2011-09-08

Family

ID=42026830

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/128,997 Abandoned US20110214951A1 (en) 2008-11-20 2009-11-16 Brake Device For Braking and Depositing Blanks Extending Laminarly

Country Status (4)

Country Link
US (1) US20110214951A1 (fr)
EP (1) EP2346763A1 (fr)
DE (2) DE102008058337A1 (fr)
WO (1) WO2010057466A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1752648A (en) * 1928-08-28 1930-04-01 Charles B Maxson Feeding and stacking machine
US4073223A (en) * 1976-10-22 1978-02-14 Fmc Corporation Bag slow down
US4625956A (en) * 1984-05-07 1986-12-02 Fa. Georg Spiess Gmbh Apparatus for forming a stack of sheets
US5039082A (en) * 1986-04-04 1991-08-13 Littleton Industrial Consultants, Inc. Double slow down pinless and gripperless delivery system
US5265862A (en) * 1992-09-25 1993-11-30 Numerical Concepts, Inc. Sheeter for recycled and lightweight paper stocks
US5366217A (en) * 1990-10-19 1994-11-22 Sk Engineering, Ltd. Sheet stacker
US5417416A (en) * 1991-02-08 1995-05-23 Heidelberger Druckmaschinen Ag Apparatus for slowing down signatures sent to a quarter fold of a folder for a printing machine
US6428001B1 (en) * 2000-03-31 2002-08-06 Heidelberger Druckmaschinen Ag Signature slowdown apparatus
US20030188954A1 (en) * 2002-04-03 2003-10-09 Bobst S.A. Device for turning piles of sheet-like material
US20040188927A1 (en) * 2003-03-31 2004-09-30 Fuji Photo Film Co., Ltd. Sheet discharging apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS617170A (ja) * 1984-06-19 1986-01-13 Toppan Printing Co Ltd シ−ト状物品の整列積層装置
FR2710042B1 (fr) * 1993-09-14 1996-03-08 Sierem Dispositif d'empilage de produits.
DE102006014220A1 (de) * 2006-03-28 2007-10-04 Man Roland Druckmaschinen Ag Vorrichtung zur Verlangsamung und/oder Beschleunigung von Druckbogen oder von einem bahnförmigen Bedruckstoff abgetrennten Exemplaren
DE202007012356U1 (de) 2007-05-11 2007-11-08 Heidelberger Druckmaschinen Ag Hinterkantenbremssystem

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1752648A (en) * 1928-08-28 1930-04-01 Charles B Maxson Feeding and stacking machine
US4073223A (en) * 1976-10-22 1978-02-14 Fmc Corporation Bag slow down
US4625956A (en) * 1984-05-07 1986-12-02 Fa. Georg Spiess Gmbh Apparatus for forming a stack of sheets
US5039082A (en) * 1986-04-04 1991-08-13 Littleton Industrial Consultants, Inc. Double slow down pinless and gripperless delivery system
US5366217A (en) * 1990-10-19 1994-11-22 Sk Engineering, Ltd. Sheet stacker
US5417416A (en) * 1991-02-08 1995-05-23 Heidelberger Druckmaschinen Ag Apparatus for slowing down signatures sent to a quarter fold of a folder for a printing machine
US5265862A (en) * 1992-09-25 1993-11-30 Numerical Concepts, Inc. Sheeter for recycled and lightweight paper stocks
US6428001B1 (en) * 2000-03-31 2002-08-06 Heidelberger Druckmaschinen Ag Signature slowdown apparatus
US20030188954A1 (en) * 2002-04-03 2003-10-09 Bobst S.A. Device for turning piles of sheet-like material
US20040188927A1 (en) * 2003-03-31 2004-09-30 Fuji Photo Film Co., Ltd. Sheet discharging apparatus

Also Published As

Publication number Publication date
EP2346763A1 (fr) 2011-07-27
DE102008058337A1 (de) 2010-05-27
DE112009003336A5 (de) 2012-01-05
WO2010057466A1 (fr) 2010-05-27

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Owner name: ROTODECOR GMBH MASCHINEN-UND ANLAGENBAU, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JACOBI, HANS-DIETER;PRANTE, PETER;REEL/FRAME:026268/0864

Effective date: 20110413

STCB Information on status: application discontinuation

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