EP0464530A2 - Dispositif pour faire chevaucher et déposer des feuilles coupées dans une bande de matériel par un coupeur en travers - Google Patents

Dispositif pour faire chevaucher et déposer des feuilles coupées dans une bande de matériel par un coupeur en travers Download PDF

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Publication number
EP0464530A2
EP0464530A2 EP19910110300 EP91110300A EP0464530A2 EP 0464530 A2 EP0464530 A2 EP 0464530A2 EP 19910110300 EP19910110300 EP 19910110300 EP 91110300 A EP91110300 A EP 91110300A EP 0464530 A2 EP0464530 A2 EP 0464530A2
Authority
EP
European Patent Office
Prior art keywords
cams
conveying
braking
conveyor
speed
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
Application number
EP19910110300
Other languages
German (de)
English (en)
Other versions
EP0464530B1 (fr
EP0464530A3 (en
Inventor
Hilmar Vits
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0464530A2 publication Critical patent/EP0464530A2/fr
Publication of EP0464530A3 publication Critical patent/EP0464530A3/de
Application granted granted Critical
Publication of EP0464530B1 publication Critical patent/EP0464530B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • B65H29/6627—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed in combination with auxiliary means for overlapping articles
    • 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
    • B65H29/686—Pneumatic brakes
    • 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
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4212—Forming a pile of articles substantially horizontal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/13—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts

Definitions

  • the invention relates to a device for overlapping and depositing sheets, which are cut off from a material web with a cross cutter, consisting of a conveyor device directly downstream of the cross cutter, which feeds the sheets for their continuation up to a stacking point, and one of the floating bars Combined conveying and braking device immediately upstream of the stacking station, which consists of a camshaft arranged above the conveying path of the sheet, equipped with conveying and braking cams and rotating in time with the cross cutter, and of sliding and braking elements assigned to the conveying and braking cams below the conveying path, wherein the conveying and braking cams rotate at the conveying speed and the braking elements at the braking speed and only the conveying cams of the interacting conveying cams and sliding elements and of the interacting braking cams and braking elements only apply the braking elements to the bend to determine the speed.
  • Cross cutters of this or a similar type are known (DT 25 321 880 B2, DE 23 48 320 C3, DE 30 07 435 C2).
  • the sheets are brought out of the conveying plane in the region of their rear edge by means of cams of a camshaft acting on them and are brought into the effective range of a braking device.
  • the part of the conveying and braking device arranged below the conveyor path consists of arranged on a common shaft, associated with the conveying cams, freely rotatable guide rollers and associated with the brake cams, non-rotatably seated on the shaft and rotating with it.
  • the invention has for its object to provide a device of the type mentioned, which allows braking of the sheet with a comparatively low braking pressure.
  • the effective braking area is increased compared to that in the prior art of the same type, because braking is carried out with twice the number of brake cams and, moreover, because of the suction belts over a longer distance. Switching from conveying to braking takes place without interruption because of the distance from Sliding elements and suction belts corresponding length of the cams the braking process is only initiated at the moment when the conveying process on the sliding elements is ended.
  • the camshaft in the drive is advanced by means of a differential with increasing conveying speed in the running direction, so that the cams push the end of the bow somewhat further forward, and behind the end of the cams a longer piece of the end of the bow remains free, which corresponds to the increase in the braking distance of the arch.
  • braking is initiated earlier and a longer braking distance is thus permitted in order to reduce the arc to the speed that is not critical for storage without increasing the braking pressure.
  • the suction area of the suction belts for braking lies in the running circle of the cams and has at least a length that corresponds to the length of the cams.
  • the suction belts following this brake conveyor line can form a pure conveyor line running outside the circulation circle of the cams and circulate at such a speed that their respective path over the two lines is covered in the time of the sheet sequence. This prevents friction between the overlapping sheets in the area of the suction belts.
  • the first conveyor element of the conveyor device which cooperates with the cams below the conveyor track, is a conveyor roller.
  • the conveyor rollers of the conveyor are arranged in the gaps between the cams and the disks. This results in a compact structure.
  • a slide rod is preferably arranged between the conveyor roller and the suction belts, the contact point of which with the cams has a distance in each case from the contact points of the conveyor roller or the suction belts of the length of the cams.
  • a material web 1 is fed to a cross cutter, which consists of a bar 2 with a lower knife 3 attached to it and a rotating knife 4 cooperating therewith on a knife drum 5.
  • the cross cutter 2-5 cuts the material web 1 into individual sheets 6.
  • the sheets 6 are conveyed, on the one hand, by blowing air-fed floating bars 7 arranged below the conveyor track and, on the other hand, a conveyor device which consists of upper conveyor rollers 8 and a lower conveyor roller 9.
  • the arrangement is such that the beginning of the material web 1 has been detected by the conveyor device 8, 9 when the material web 1 is cut crosswise. In this way, an accurate conveying of the sheets 6 is ensured at a speed predetermined by the conveying device 8, 9.
  • the floating slats 7 extend as far as the conveyor roller 9. Suspended strips 10 adjoin the conveyor rollers 8 and are arranged above the conveying path of the sheets 6. These floating strips 10 extend largely over a stacking point 11. The floating strips 7 and 10 have a promoting effect on the sheets.
  • a combined conveying and braking device is provided behind the conveying device 8, 9 and immediately in front of the shelf 11.
  • a slide rod 16 and a suction table 17 are arranged below the conveying plane.
  • Suction belts 18 run over rollers 19a, b, c.
  • a rotating shaft 20 is mounted, on which disks 21 are provided at a distance from one another in the area of gaps left by the floating bars 10, which are equipped with congruent cams 22 which perform the guiding, conveying and braking task together with those below the conveying plane arranged elements 16 to 19 meet. Since the conveyor rollers 8 are immersed in the circulation of the cams 22, they are in their gaps, i.e. arranged in alignment with the floating slats 10 (FIG. 2).
  • the conveyor roller 9, the slide rod 16, the rollers 19a and 19b, including the suction belts 18, are assigned to the circular path of the cams 22 upon contact (FIGS. 3 to 5). So there is the contact point A between the rollers 8 and the conveyor roller 9, the contact point B for the cam 22 with the conveyor roller 9, the contact point C with the slide rod 16, the start and end contact point with the rollers 19a and 19b including the suction belts 18 D and E and without contact with the cam 22 for the respective arc end with the suction belts 18, the final contact point F.
  • the dimensions of the elements 16 to 19 are chosen so that the distances CD and, if possible, BC match the cam length GH well, during the Distance DE should at least correspond to the cam length GH.
  • the distances AB and EF are completely independent of the cam length GH because the cam 22 does not contact points A and E anyway. The most important thing is the correspondence of the distance CD with the cam length GH, because this is the only way to switch seamlessly from delivery to braking.
  • the distance BC should at most be equal to the cam length GH, because this ensures that the sheet is conveyed in a defined manner even after leaving point A.
  • the speed of the sheet 6, as long as the cam 22 on the conveyor roller 9 and / or the slide rod 16 is active, is equal to that specified by the conveyor device 8, 9, so that the conveyor at point C hardly requires any force due to the cam 22 rotating at the conveying speed. Therefore, to maintain the speed of the sheet 6, it is sufficient that the coefficient of friction between the cam 22 rotating at the conveying speed and the sheet 6 is greater than the coefficient of friction between the sheet 6 and the surface of the slide rod 16, especially since the floating strips 10 exert a slight pull on the sheet 6 exercise. Otherwise, the time for an undesired change in speed at point C is very short. For example, with 36,000 sheets per hour of 0.63 m in length and a distance between the contact points BC or CD of 5% of the sheet length, the conveying time of the sheet end at contact point C is only 5 milliseconds.
  • the overlapping and depositing of the sheet 6 is initiated by pressing the cams 22 on the end region of the sheet 6, whereby the sheet 6 is brought below the conveying plane, ie below the underside of the floating slats 10, while its end is still by the rollers 8 and Roller 9 is promoted at contact point A ( Figure 3).
  • the start G of the cams 22 reaches the contact point B on the roller 9, so that the further conveyance of the sheet 6 is independent of the length of the sheet end, which the contact point A has not yet passed through.
  • the conveying device 8, 9 Since the conveying device 8, 9 has a slight advance in relation to the material web 1 fed by the cross cutter 3-5, its beginning at the end of the leading sheet 6, which is deflected downward in height, has both a vertical and a longitudinal distance, so that when braking there is no danger of contact between the beginning of the material web 1 and the downwardly deflected end of the sheet 6.
  • the braking of the sheet 6 begins at the contact of the start G of the cam 22 with the beginning of the brake conveyor section DE, ie the contact point D of the roller 19a guiding the suction belts 18 (FIG. 5) and should be ended at the latest when the end of the sheet 6 ends The beginning of the brake conveyor at D is reached. Even within the sheet follower cycle, the end of the sheet 6 is further conveyed over the brake conveyor section DE to the end E, so that at the end of the sheet follower cycle the brake conveyor section DE is released along its entire length for braking the next sheet.
  • the brake conveyor section DE is fully utilized for braking and on the other hand it is ensured that the braking section DE is free when the cam 22 takes the next sheet onto the suction belts 18 presses, the length of a free end of the arc 6 behind the end H of the cam 22 is adjusted accordingly via a speed-dependent phase adjustment in the drive of the camshaft 20.
  • the braking distance corresponds to the sum of the length GH covered by the cam and the length of the end area not covered.
  • the point K lies at the end of the floating slats 10, to which a slide comb 23 is attached, which guides the sheets arriving quickly but only slowly passing onto the stacking point 11.
  • Three beginnings of the arch 6 form a stabilizing S curve, in which the impact of each stop of an arch 6 on the stop strips 13 is absorbed elastically.
  • the air flow in the conveying direction below the floating slats 10 escapes through the sliding comb 23 via the stop slats 13.
  • Deviating from the described mode of operation of the device is the mode of operation when starting and stopping, that is to say at an extremely low conveying speed.
  • the end of the curve lies under the cam 22. Since the braking distance is very short at this low conveying speed, the end of the curve has not yet reached point D when braking is complete. Therefore, when the sheet 6 is further conveyed by the suction belts 18, the end of the sheet will not yet have reached point E by the end of the sheet following stroke, so that the full length of the brake conveyor line DE is not available for the subsequent sheet.
  • the resulting lower braking force for the following arc is not disadvantageous but even advantageous because it then increases the braking distance by moving its end closer to point D.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
EP91110300A 1990-06-27 1991-06-22 Dispositif pour faire chevaucher et déposer des feuilles coupées dans une bande de matériel par un coupeur en travers Expired - Lifetime EP0464530B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4020398 1990-06-27
DE4020398A DE4020398C1 (fr) 1990-06-27 1990-06-27

Publications (3)

Publication Number Publication Date
EP0464530A2 true EP0464530A2 (fr) 1992-01-08
EP0464530A3 EP0464530A3 (en) 1992-08-19
EP0464530B1 EP0464530B1 (fr) 1994-11-30

Family

ID=6409147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91110300A Expired - Lifetime EP0464530B1 (fr) 1990-06-27 1991-06-22 Dispositif pour faire chevaucher et déposer des feuilles coupées dans une bande de matériel par un coupeur en travers

Country Status (4)

Country Link
US (1) US5186450A (fr)
EP (1) EP0464530B1 (fr)
JP (1) JPH0825681B2 (fr)
DE (2) DE4020398C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5599012A (en) * 1994-05-11 1997-02-04 Bobst Sa Decelerating system for decelerating the movement of sheets into the delivery station of a sheet fed press
RU2468980C1 (ru) * 2011-07-20 2012-12-10 Общество С Ограниченной Ответственностью "Конструкторское Бюро "Дорс" (Ооо "Кб "Дорс") Устройство для помещения листов в пачку и способ его работы

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4238386C1 (de) * 1992-11-13 1994-05-05 Heidelberger Druckmasch Ag Einrichtung zum Querschneiden kontinuierlich zugeführten Materials
WO1994025384A1 (fr) * 1993-05-05 1994-11-10 Vits Maschinenbau Gmbh Dispositif permettant de transferer et d'empiler des feuilles
DE4316413A1 (de) * 1993-05-17 1994-11-24 Heidelberger Druckmasch Ag Einrichtung zur Entnahme von Probeexemplaren an Rotationsquerschneidern
DE4316400C2 (de) * 1993-05-17 1997-12-11 Heidelberger Druckmasch Ag Einrichtung zur Entnahme aus einem Förderstrom ausgeschleuster Exemplare
US6145833A (en) * 1998-06-02 2000-11-14 Marquip, Inc. Rotary brush sheet deceleration device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917250A1 (de) * 1979-04-27 1980-10-30 Gruner & Jahr Vorrichtung zur taktung der ueberlappungslaenge von in einem im wesentlichen gleichmaessigen schuppenstrom gefoerderten, flaechenhaften produkten
DE3920407A1 (de) * 1988-08-03 1990-02-08 Hilmar Vits Vorrichtung zum ablegen von bogen an einer stapelstelle
DD285326A5 (de) * 1989-06-28 1990-12-12 Veb Kombinat Polygraph "Werner Lamberz" Leipzig,Dd Saugbandfoerderer in auslagen von druckmaschinen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2348320C3 (de) * 1973-09-26 1978-12-14 Vits-Maschinenbau Gmbh, 4018 Langenfeld Vorrichtung zum stapelweisen Ablegen einzelner gleichlanger Bogen
DE2532880C3 (de) * 1975-07-23 1978-05-18 Vits-Maschinenbau Gmbh, 4018 Langenfeld Vorrichtung zum Schuppen und Ablegen von hintereinander geförderten Bogen auf einen Stapel
GB1549203A (en) * 1975-07-23 1979-08-01 Vits Maschinenbau Gmbh Device for overlapping sheets which are regularly individually conveyed one after the other
DE2841658C2 (de) * 1978-09-25 1980-09-11 Vits-Maschinenbau Gmbh, 4018 Langenfeld Vorrichtung zum Schuppen und Ablegen von Bogen auf einen Stapel
DE3007435C2 (de) * 1980-02-28 1984-02-09 Vits-Maschinenbau Gmbh, 4018 Langenfeld Querschneider für Warenbahnen mit nachgeordneter Ablage für die geschnittenen Bogen
DE3418344A1 (de) * 1984-05-17 1985-11-21 Georg Spiess Gmbh, 8906 Gersthofen Vorrichtung zur bildung eines bogenstapels
DE3836604A1 (de) * 1988-10-27 1990-05-03 Hilmar Vits Querschneider fuer materialbahnen mit nachgeordneter ablage fuer die geschnittenen bogen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917250A1 (de) * 1979-04-27 1980-10-30 Gruner & Jahr Vorrichtung zur taktung der ueberlappungslaenge von in einem im wesentlichen gleichmaessigen schuppenstrom gefoerderten, flaechenhaften produkten
DE3920407A1 (de) * 1988-08-03 1990-02-08 Hilmar Vits Vorrichtung zum ablegen von bogen an einer stapelstelle
DD285326A5 (de) * 1989-06-28 1990-12-12 Veb Kombinat Polygraph "Werner Lamberz" Leipzig,Dd Saugbandfoerderer in auslagen von druckmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5599012A (en) * 1994-05-11 1997-02-04 Bobst Sa Decelerating system for decelerating the movement of sheets into the delivery station of a sheet fed press
RU2468980C1 (ru) * 2011-07-20 2012-12-10 Общество С Ограниченной Ответственностью "Конструкторское Бюро "Дорс" (Ооо "Кб "Дорс") Устройство для помещения листов в пачку и способ его работы

Also Published As

Publication number Publication date
EP0464530B1 (fr) 1994-11-30
DE59103640D1 (de) 1995-01-12
DE4020398C1 (fr) 1992-02-13
JPH04313559A (ja) 1992-11-05
US5186450A (en) 1993-02-16
EP0464530A3 (en) 1992-08-19
JPH0825681B2 (ja) 1996-03-13

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