EP1041029B1 - Method and device for removing air inclusions during the formation of stacks of sheets - Google Patents
Method and device for removing air inclusions during the formation of stacks of sheets Download PDFInfo
- Publication number
- EP1041029B1 EP1041029B1 EP00105265A EP00105265A EP1041029B1 EP 1041029 B1 EP1041029 B1 EP 1041029B1 EP 00105265 A EP00105265 A EP 00105265A EP 00105265 A EP00105265 A EP 00105265A EP 1041029 B1 EP1041029 B1 EP 1041029B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- sheets
- stack
- stacks
- arrangement 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
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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
- B65H31/00—Pile receivers
- B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
- B65H31/08—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another
- B65H31/10—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another and applied at the top of the pile
-
- 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
- B65H2301/4217—Forming multiple piles
- B65H2301/42172—Forming multiple piles simultaneously
-
- 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
-
- 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
- B65H2406/35—Other elements with suction surface, e.g. plate or wall
- B65H2406/352—Other elements with suction surface, e.g. plate or wall facing the edge of the 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
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/20—Avoiding or preventing undesirable effects
- B65H2601/21—Dynamic air effects
- B65H2601/211—Entrapping air in or under the 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
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/176—Cardboard
Definitions
- the invention relates to a method for removing entrapped air when forming stacks of sheets, which are successively fed to a stack to be formed and deposited on it, wherein in the feed region of the arc air is sucked out of gaps of the sheet.
- the invention also relates to an arrangement for the removal of trapped air in forming stacks of sheets with a feed device for feeding the sheets successively to the stack to be formed, on which they are deposited, wherein in the region of the supply means at least one suction device for removing air from gaps is provided between sheet.
- Arches should be understood to mean sheets of paper, cardboard or plastic, such as foils. The size of the bow can vary within wide limits. So can be z. B.
- these sheets are often accumulated in stacks (also called giant) and then fed to a further processing in which they z. B. are enveloped with wrapping material.
- stacks also called giant
- the transportation of uncoated stacks requires particular care because, as a result of the air trapped between the sheets forming the stacks, there is a tendency for individual sheets or entire sheet layers to move, causing a stack to lose its desired generally cuboidal configuration. This can lead to damage during further transport, which can make the entire stack useless.
- To remove such air inclusions z. B. DE 195 23 699 A 1 or DE 34 03 209 A 1 method known according to which the air pockets are pressed out of the finished stack or struck.
- the effect of the extraction of interfering air can be further improved in a further embodiment of the invention in that air is sucked above the feed area, because then disturbing of the sheet with supplied air is gently removed.
- air can be sucked through openings of boundary walls into cavities of suction devices, so-called vacuum chambers.
- a particularly advantageous embodiment of an extraction of air from the side surfaces of two juxtaposed stack can be achieved in that boundary walls of the cavity (vacuum chamber) arranged between two stacks suction approach each other and touch in places and are connected to each other. If it is ensured that air can flow through further openings with larger cross-sections in the areas of the contacting boundary walls, then adjusting undesirable differences in air pressure on both sides of the hollow body can be compensated.
- the homogenization of the suction can also be used if the flow of air in the cavity is at least partially throttled or interrupted.
- a suction device may comprise an air-aligned alignment surface for the sheets of a stacking surface.
- Such an alignment surface may preferably be connected to an oscillating drive that vibrates the surface.
- an alignment surface may be formed as a boundary wall of a cavity connected to a vacuum source.
- boundary walls can then preferably be provided in the contact areas with further openings whose cross sections are larger than those of the air openings.
- the cavity may be provided in some embodiments of the invention in places with throttle elements for the air.
- the air conditions in the supply region of the sheet in the sense of reducing the air inclusions can be improved in that a suction device is arranged above the sheet supply area, so that even over the stack with the bow conveyed air can be sucked.
- the advantage associated with the invention is that the formation of air pockets already largely suppressed during stacking, so that later pressing of the stack, which always requires a considerable effort, unnecessary.
- the boundary surfaces of the suction devices, if they are vibrated, in addition as alignment surfaces for the stack serve.
- Figures 1 and 2 show schematically a pallet 1, the two stacks 2 and 3 from Bow 4 is wearing.
- the sheets can be sheets of normal copy paper size or a smaller or larger format.
- the bows can also made of cardboard or plastic.
- the sheet 4 with represented large spaces 13 that they do not have in reality. Much more The bows in the stacks are close together. They are supplied by supply facilities 6 in the form of conveyor belts 7 (only one can be seen in FIG. 1) in FIG Direction of the arrow 8 consecutively fed laterally and on the stacks. 2 and 3 filed.
- the conveyor belts 7 are delivery belts of a not shown Machine for producing the sheet, z. B.
- the pallet 1 is not shown by a usual Lowered lifting device, so that the stacking surfaces at least approximately maintain the same heights relative to the conveyor belts 7.
- Below the conveyor belts 7 is an alignment plate 9, by an oscillating drive 11 in oscillating movements to align the sheets 4 in the stacks 2 and 3 in the Area 12 of the sheet feed is offset.
- suction devices for removal d. H. Suction of harmful air inclusions arranged from the spaces 13 between the sheets 4. Hereinafter is spoken of the sucked air inclusions only as air ".
- a first suction device 14 is located opposite the supply device 6 and has a vacuum box 17 associated with the surfaces 15 of the stacks 2 and 3 and provided with air openings 16, which is connected to a vacuum source 18 in the form of a fan 19.
- the sucked from the spaces 13 air (air pockets) passes according to the arrows 21 through the air openings 16 in the vacuum box 17 and from there according to arrows 20 to the fan 19th 2, further suction devices 22, 23 and 24 which are assigned to those surfaces 25 or 26 or 27 or 28 of the stacks 2 and 3, which are parallel to the feed direction of the sheets 4, are located in the feed region 12 (as indicated by arrow 8).
- suction devices also have vacuum box 29, 31 and 32, which are provided with not shown in Figure 2 air openings and connected via lines corresponding to the arrows 20 with the fan 19, so that the extracted air according to the arrows 21 in the vacuum box and from there according to the arrows 20 can flow to the fan 19.
- the vacuum boxes 29, 31 and 32 are caused by oscillating actuators 33 and 34 and 36 respectively for performing vibrations, so that their suction surfaces 37 and 38 a, 38 b and 39 except for sucking the air inclusions and for aligning the stack side surfaces 25th or 26 or 27 or 28 can serve.
- the formation of the suction devices 22 and 24 acting on the outer side surfaces 25 and 28 of the stacks 2 and 3, respectively, may be substantially the same.
- the vacuum box 31 of the suction device 23 is shown in the in a first suction 40 through air openings 41, 42 in the suction surfaces 38 a, 38 b formed boundary walls 43 and 44, air from the interstices 13 of the stack second and 3 flows in accordance with the arrows 46.
- a further suction 47 above the stack 2 and 3 are more air openings 41 a and 42 a, is sucked from the entrained by the arc air, which also reduces the risk of the formation of trapped air.
- the boundary walls 43, 44 which simultaneously serve as alignment surfaces for the side surfaces 26, 27 of the stacks 2 and 3, are partially retracted and siege.
- the boundary walls 43, 44 which serve simultaneously as alignment surfaces for the side surfaces 26, 27 of the stacks 2 and 3 respectively, are locally drawn in and approach each other until they touch each other in the areas 48, 49. In these areas, the boundary walls can be connected to each other. In the contact areas there are air openings 52 with cross-sections that are significantly larger than those of the air openings 41, 42. They allow pressure equalization, as a result of different conditions when shaking the boundary walls and suction of air undesirably different pressures on both sides of the suction device 23 form.
- a barrier 53 also serves to improve the air flow in the suction device 23rd
- the used with suction openings boundary walls the suction devices may advantageously in addition to the alignment the stacking surfaces can be used if it puts shaking motion become.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Pile Receivers (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Materials For Photolithography (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Entfernen von Lufteinschlüssen beim Bilden
von Stapeln aus Bogen, die einem zu bildenden Stapel aufeinanderfolgend zugeführt
und auf ihm abgelegt werden, wobei im Zufuhrbereich der Bogen Luft aus
Zwischenräumen der Bogen abgesaugt wird.
Die Erfindung betrifft außerdem eine Anordnung zum Entfernen von Lufteinschlüssen
beim Bilden von Stapeln aus Bogen mit einer Zufuhreinrichtung zum aufeinanderfolgenden
Zuführen der Bogen zu dem zu bildenden Stapel, auf dem sie abgelegt
werden, wobei im Bereich der Zufuhreinrichtung mindestens eine Absaugvorrichtung
zum Entfernen von Luft aus Zwischenräumen zwischen Bogen vorgesehen
ist.
Unter Bogen sollen Bogen aus Papier, Karton oder Kunststoff wie Folien verstanden
werden. Die Größe der Bogen kann in weiten Grenzen variieren. So lassen sich
z. B. Stapel aus Bogen von der Größe üblichen Kopierpapiers oder auch von geringerer
oder mehrfacher Größe gemäß der Erfindung behandeln.
Bei der Herstellung von Bogen werden diese oft zu Stapeln (auch Riese genannt)
angesammelt und danach einer Weiterverarbeitung zugeführt, bei der sie z. B. mit
Umhüllungsmaterial umhüllt werden. Der Transport unumhüllter Stapel erfordert
besondere Vorsicht, weil infolge der beim Bilden der Stapel zwischen den Bogen
eingeschlossenen Luft leicht ein Verschieben einzelner Bogen oder ganzer Bogenlagen
eintritt, bei dem ein Stapel seine gewünschte meist quaderförmige Konfiguration
verliert. Dies kann beim weiteren Transport zu Beschädigungen führen, die den
gesamten Stapel unbrauchbar machen können.
Zum Entfernen derartiger Lufteinschlüsse sind z. B. durch die DE 195 23 699 A 1
oder die DE 34 03 209 A 1 Verfahren bekannt, nach denen die Lufteinschlüsse aus
dem fertigen Stapel herausgepreßt bzw. herausgestrichen werden. Derartig arbeitende
Verfahren sind nicht optimal.
In der US-A-5259608 und der GB 914468A sind Verfahren und Anordnungen beschrieben,
bei denen die Ablage von Druckbögen unter dem Einfluss von Saugluft
erfolgt.
Die der Erfindung zugrundeliegende Aufgabe besteht darin, ein neues und vorteilhaftes
Verfahren sowie eine entsprechende Anordnung zu schaffen zwecks Herstellung
von Stapeln ohne störende Lufteinschlüsse.
Nach dem Verfahren gemäß der Erfindung wird diese Aufgabe dadurch gelöst,
dass die Bogen zwei nebeneinander angeordneten Stapeln zugeführt werden und
dass die Luft auf jeweils einer Seitenfläche eines Stapels von einer zwischen den
Stapeln angeordneten Absaugvorrichtung abgesaugt wird. Eine besonders vorteilhafte
Ausgestaltung des Verfahrens besteht gemäß der Erfindung darin, daß Absaugvorrichtungen
zum Absaugen der Luft schwingende Ausrichtbewegungen für
Flächen des Stapels ausführen. Die Wirkung der Absaugung störender Luft kann in
weiterer Ausgestaltung der Erfindung noch dadurch verbessert werden, dass Luft
oberhalb des Zufuhrbereichs abgesaugt wird, weil dann störende von den Bogen
mit zugeführte Luft schonend entfernt wird. Hierbei kann Luft durch Öffnungen von
Begrenzungswänden in Hohlräume von Absaugvorrichtungen, sogenannte Unterdruckkammern,
gesaugt werden.
Eine besonders vorteilhafte Weiterbildung einer Absaugung von Luft von den Seitenflächen
zweier nebeneinander angeordneter Stapel läßt sich dadurch erreichen,
dass Begrenzungswände des Hohlraums (Unterdruckkammer) einer zwischen zwei
Stapeln angeordneten Absaugvorrichtung sich einander annähern und stellenweise
berühren und dort miteinander verbunden sind. Wird dafür gesorgt, daß in den Bereichen
der sich berührenden Begrenzungswände Luft durch weitere Öffnungen mit
größeren Querschnitten strömen kann, so können sich etwa einstellende unerwünschte
Luftdruckunterschiede auf beiden Seiten des Hohlkörpers ausgleichen.
Der Homogenisierung der Absaugung kann es auch dienen, wenn die Strömung
der Luft in dem Hohlraum zumindest teilweise gedrosselt oder unterbrochen wird.The invention relates to a method for removing entrapped air when forming stacks of sheets, which are successively fed to a stack to be formed and deposited on it, wherein in the feed region of the arc air is sucked out of gaps of the sheet.
The invention also relates to an arrangement for the removal of trapped air in forming stacks of sheets with a feed device for feeding the sheets successively to the stack to be formed, on which they are deposited, wherein in the region of the supply means at least one suction device for removing air from gaps is provided between sheet.
Arches should be understood to mean sheets of paper, cardboard or plastic, such as foils. The size of the bow can vary within wide limits. So can be z. B. stack of sheets on the size of conventional copy paper or even of lesser or more size according to the invention treat.
In the production of these sheets are often accumulated in stacks (also called giant) and then fed to a further processing in which they z. B. are enveloped with wrapping material. The transportation of uncoated stacks requires particular care because, as a result of the air trapped between the sheets forming the stacks, there is a tendency for individual sheets or entire sheet layers to move, causing a stack to lose its desired generally cuboidal configuration. This can lead to damage during further transport, which can make the entire stack useless.
To remove such air inclusions z. B. DE 195 23 699
In US-A-5259608 and GB 914468A methods and arrangements are described in which the deposition of signatures takes place under the influence of suction air.
The object underlying the invention is to provide a new and advantageous method and a corresponding arrangement for the purpose of producing stacks without disturbing air inclusions.
According to the method according to the invention, this object is achieved in that the sheets are fed to two juxtaposed stacks and that the air is sucked off on a respective side surface of a stack from a suction device arranged between the stacks. A particularly advantageous embodiment of the method according to the invention is that exhaust devices for sucking the air perform oscillating alignment movements for surfaces of the stack. The effect of the extraction of interfering air can be further improved in a further embodiment of the invention in that air is sucked above the feed area, because then disturbing of the sheet with supplied air is gently removed. In this case, air can be sucked through openings of boundary walls into cavities of suction devices, so-called vacuum chambers.
A particularly advantageous embodiment of an extraction of air from the side surfaces of two juxtaposed stack can be achieved in that boundary walls of the cavity (vacuum chamber) arranged between two stacks suction approach each other and touch in places and are connected to each other. If it is ensured that air can flow through further openings with larger cross-sections in the areas of the contacting boundary walls, then adjusting undesirable differences in air pressure on both sides of the hollow body can be compensated. The homogenization of the suction can also be used if the flow of air in the cavity is at least partially throttled or interrupted.
Die eingangs genannte Anordnung ist dadurch gekennzeichnet, dass zwischen
zwei Stapeln, denen Bogen zugeführt sind, ein Hohlraum einer Absaugvorrichtung
angeordnet ist, deren mit Luftöffnungen versehene Begrenzungswände an jeweils
eine Seitenfläche eines Stapels angrenzen.
Eine Absaugvorrichtung kann eine mit Luftöffnungen versehene Ausrichtfläche für
die Bogen einer Stapelfläche aufweisen. Eine derartige Ausrichtfläche kann bevorzugt
mit einem die Fläche in Schwingungen versetzenden Schwingantrieb verbunden
sein. Gemäß einer bevorzugten Weiterbildung der Erfindung kann eine Ausrichtfläche
als Begrenzungswand eines mit einer Unterdruckquelle verbundenen
Hohlraums ausgebildet sein. Die vorbeschriebene Absaugvorrichtung ist besonders
platzsparend und wenig aufwendig. Die Begrenzungswände einer solchen Absaugvorrichtung
können sich stellenweise berühren und dort miteinander verbunden
sein. Diese Begrenzungswände können dann vorzugsweise in den Berührungsbereichen
mit weiteren Öffnungen versehen sein, deren Querschnitte größer sind als
diejenigen der Luftöffnungen. Der Hohlraum kann in weiterer Ausbildung der Erfindung
stellenweise mit Drosselelementen für die Luft versehen sein.
Gemäß einer weiteren Ausgestaltung der Erfindung können die Luftverhältnisse im
Zufuhrbereich der Bogen im Sinne einer Verringerung der Lufteinschlüsse dadurch
verbessert werden, daß eine Absaugvorrichtung auch oberhalb des Bogenzufuhrbereichs
angeordnet ist, so daß auch über dem Stapel mit den Bogen angeförderte
Luft abgesaugt werden kann.The above-mentioned arrangement is characterized in that between two stacks, which are supplied with sheets, a cavity of a suction device is arranged, whose provided with air openings boundary walls adjacent to each side surface of a stack.
A suction device may comprise an air-aligned alignment surface for the sheets of a stacking surface. Such an alignment surface may preferably be connected to an oscillating drive that vibrates the surface. According to a preferred development of the invention, an alignment surface may be formed as a boundary wall of a cavity connected to a vacuum source. The above-described suction device is particularly space-saving and inexpensive. The boundary walls of such a suction device can touch in places and be connected there. These boundary walls can then preferably be provided in the contact areas with further openings whose cross sections are larger than those of the air openings. The cavity may be provided in some embodiments of the invention in places with throttle elements for the air.
According to a further embodiment of the invention, the air conditions in the supply region of the sheet in the sense of reducing the air inclusions can be improved in that a suction device is arranged above the sheet supply area, so that even over the stack with the bow conveyed air can be sucked.
Der mit der Erfindung verbundene Vorteil besteht darin, daß die Bildung von Lufteinschlüssen schon während des Stapelaufbaus weitgehend unterbunden wird, so daß sich späteres Pressen des Stapels, das stets einen beachtlichen Aufwand erfordert, erübrigt. Die Begrenzungsflächen der Absaugvorrichtungen können, falls sie in Schwingungen versetzt werden, zusätzlich als Ausrichtflächen für die Stapel dienen. The advantage associated with the invention is that the formation of air pockets already largely suppressed during stacking, so that later pressing of the stack, which always requires a considerable effort, unnecessary. The boundary surfaces of the suction devices, if they are vibrated, in addition as alignment surfaces for the stack serve.
Die Erfindung wird anhand eines Ausführungsbeispiels näher erläutert.The invention will be explained in more detail with reference to an embodiment.
Es zeigen
Figur 1- eine Seitenansicht einer Abgabestation für Bogen, die zwei Stapeln zugeführt sind,
Figur 2- eine Ansicht gemäß Pfeil A in
Figur 1 Figur 3- Einzelheiten einer zwischen den Stapeln angeordneten Absaugvorrichtung in vergrößertem Maßstab,
Figur 4- einen Schnitt (unmaßstäblich) durch die Absaugvorrichtung nach
Figur 3 entsprechend der Linie C-C
- FIG. 1
- a side view of a delivery station for sheets which are fed to two stacks,
- FIG. 2
- a view according to arrow A in Figure 1
- FIG. 3
- Details of an arranged between the stacks suction on an enlarged scale,
- FIG. 4
- a section (not to scale) through the suction device of Figure 3 along the line CC
Die Figuren 1 und 2 zeigen schematisch eine Palette 1, die zwei Stapel 2 und 3 aus
Bogen 4 trägt. Bei den Bogen kann es sich um Bogen von normalem Kopierpapierformat
oder einem kleineren oder größeren Format handeln. Die Bogen können
auch aus Karton oder Kunststoff bestehen. In der Zeichnung sind die Bogen 4 mit
großen Zwischenräumen 13 dargestellt, die sie in der Realität nicht haben. Vielmehr
liegen die Bogen in den Stapeln dicht an dicht aufeinander. Sie werden von Zufuhreinrichtungen
6 in Form von Förderbändern 7 (in Figur 1 ist nur eines zu sehen) in
Richtung des Pfeils 8 aufeinanderfolgend seitlich zugeführt und auf den Stapeln 2
und 3 abgelegt. Die Förderbänder 7 sind Abgabebänder einer nicht dargestellten
Maschine zum Herstellen der Bogen, z. B. eines sogenannten Kleinformatschneiders
etwa vom bekannten Typ SLK der Anmelderin oder einer größere Formate
herstellenden Schneidemaschine, etwa vom Typ FFS der Anmelderin, die sogenannte
Foliobogen herstellt. Die Palette 1 wird von einer üblichen nicht dargestellten
Hubvorrichtung abgesenkt, so daß die Stapeloberflächen zumindest annähernd
die gleichen Höhen relativ zu den Förderbändern 7 beibehalten. Unterhalb der Förderbänder
7 befindet sich eine Ausrichtplatte 9, die von einem Schwingantrieb 11 in
schwingende Bewegungen zum Ausrichten der Bogen 4 in den Stapeln 2 und 3 im
Bereich 12 der Bogenzufuhr versetzt wird. In dem Bereich 12 der Zufuhreinrichtung
6 sind Absaugvorrichtungen zum Entfernen, d. h. Absaugen schädlicher Lufteinschlüsse
aus den Zwischenräumen 13 zwischen den Bogen 4 angeordnet. Im Folgenden
wird von den abgesaugten Lufteinschlüssen nur als Luft" gesprochen.Figures 1 and 2 show schematically a
Eine erste Absaugvorrichtung 14 befindet sich gegenüber der Zufuhreinrichtung 6
und weist einen den Flächen 15 der Stapel 2 und 3 zugeordneten mit Luftöffnungen
16 versehenen Unterdruckkasten 17 auf, der mit einer Unterdruckquelle 18 etwa in
Form eines Ventilators 19 verbunden ist. Die aus den Zwischenräumen 13 gesaugte
Luft (Lufteinschlüsse) gelangt entsprechend den Pfeilen 21 durch die Luftöffnungen
16 in den Unterdruckkasten 17 und von da entsprechend Pfeilen 20 zu
dem Ventilator 19.
Im Zufuhrbereich 12 befinden sich, wie insbesondere Figur 2 zeigt, weitere Absaugvorrichtungen
22, 23 und 24, die denjenigen Flächen 25 bzw. 26 bzw. 27 bzw. 28
der Stapel 2 und 3 zugeordnet sind, die sich parallel zu der Zufuhrrichtung der Bogen
4 (entsprechend Pfeil 8) erstrecken. Diese Absaugvorrichtungen weisen ebenfalls
Unterdruckkasten 29, 31 und 32 auf, die mit in Figur 2 nicht dargestellten
Luftöffnungen versehen und über Leitungen entsprechend den Pfeilen 20 mit dem
Ventilator 19 verbunden sind, so daß die abgesaugte Luft entsprechend den Pfeilen
21 in die Unterdruckkasten und von da entsprechend den Pfeilen 20 zu dem Ventilator
19 strömen kann. Die Unterdruckkasten 29, 31 und 32 werden von Schwingantrieben
33 bzw. 34 bzw. 36 jeweils zur Ausführung von Schwingungen veranlaßt, so
daß ihre Saugflächen 37 bzw. 38 a, 38 b bzw. 39 außer zum Absaugen der Lufteinschlüsse
auch zum Ausrichten der Stapelseitenflächen 25 bzw. 26 bzw. 27 bzw. 28
dienen können. Die Ausbildung der die äußeren Seitenflächen 25 und 28 der Stapel
2 bzw. 3 beaufschlagenden Absaugvorrichtungen 22 und 24 kann im wesentlichen
gleich sein. Die zwischen den Stapeln 2 und 3 angeordnete Absaugvorrichtung 23
ist im folgenden näher beschrieben.
In den Figuren 3 und 4 ist der Unterdruckkasten 31 der Absaugvorrichtung 23 dargestellt,
in den in einem ersten Absaugbereich 40 durch Luftöffnungen 41, 42 in den
als Saugflächen 38 a, 38 b ausgebildeten Begrenzungswänden 43 bzw. 44 Luft aus
den Zwischenräumen 13 der Stapel 2 und 3 entsprechend den Pfeilen 46 einströmt.
In einem weiteren Absaugbereich 47 oberhalb der Stapel 2 und 3 befinden sich
weitere Luftöffnungen 41 a und 42 a, von den durch die Bogen mitgerissene Luft
abgesaugt wird, was die Gefahr der Bildung von Lufteinschlüssen ebenfalls verringert.
Die Begrenzungswände 43, 44, die gleichzeitig als Ausrichtflächen für die
Seitenflächen 26, 27 der Stapel 2 bzw. 3 dienen, sind stellenweise eingezogen und
gert. Die Begrenzungswände 43, 44, die gleichzeitig als Ausrichtflächen für die
Seitenflächen 26, 27 der Stapel 2 bzw. 3 dienen, sind stellenweise eingezogen und
nähern sich einander an, bis sie sich in den Bereichen 48, 49,
berühren. In diesen Bereichen können die Begrenzungswände miteinander
verbunden sein. In den Berührungsbereichen befinden sich Luftöffnungen 52
mit Querschnitten, die erheblich größer sind als diejenigen der Luftöffnungen 41,
42. Sie erlauben einen Druckausgleich, wenn sich infolge unterschiedlicher Verhältnisse
beim Rütteln der Begrenzungswände und Absaugen von Luft in unerwünschte
Weise unterschiedliche Drücke auf beiden Seiten der Absaugvorrichtung
23 bilden. Eine Sperre 53 dient ebenfalls zur Verbesserung der Luftführung in der
Absaugvorrichtung 23.A
2,
In Figures 3 and 4, the
Mit dem beschriebenen Verfahren und der Anordnung gelingt es, die Bildung von Lufteinschlüssen schon im Ansatz, nämlich bei der Stapelbildung, ausreichend zu verringern. Die dazu verwendeten mit Saugöffnungen versehenen Begrenzungswände der Absaugvorrichtungen können in vorteilhafterweise zusätzlich zum Ausrichten der Stapelflächen genutzt werden, falls sie rüttelnde Bewegung versetzt werden.With the described method and the arrangement, it is possible, the formation of Air pockets already in the beginning, namely in the stack formation, sufficient to reduce. The used with suction openings boundary walls the suction devices may advantageously in addition to the alignment the stacking surfaces can be used if it puts shaking motion become.
Claims (16)
- Method of removing air inclusions when forming stacks (2, 3) from sheets (4) which are fed successively to a stack which is to be formed and are deposited on said stack, wherein air is sucked off, in the infeed region of the sheets, from intervening spaces between said sheets, characterised in that the sheets are fed to two stacks disposed side by side and that air is sucked off, on one lateral face (26, 27) of a stack in each case, by a suction device (23) disposed between the stacks.
- Method according to claim 1, characterised in that suction devices for sucking off the air execute oscillating aligning movements for faces of the stack.
- Method according to claim 1 and/or claim 2, characterised in that air is sucked off above the infeed region.
- Method according to one or more of the preceding claims, characterised in that air is sucked through apertures (41, 42) in cavities (31) of suction devices (23).
- Method according to claim 4, characterised in that boundary walls (43, 44) of the cavity of a suction device (23) disposed between two stacks (2, 3) approach one another, touch one another at certain points and are connected to one another at said points, and that, in the regions of the boundary walls that touch one another, air flows through further apertures (52) with cross-sections which are larger, relative to the apertures (41, 42).
- Method according to claim 5, characterised in that the flowing of the air is at least partially throttled or interrupted in the cavity.
- Method according to one or more of the preceding claims, characterised in that air is sucked off from the stack faces that lie opposite the sheet infeed (6) and from both lateral faces of the stacks.
- Arrangement for removing air inclusions when forming stacks (2, 3) from sheets (4), with a feeding-in apparatus (6) for successively feeding the sheets in to form a stack which is to be formed and on which they are deposited, wherein there is provided, in the region (12) of the feeding-in apparatus (6), at least one suction device (14, 22 ... 24) for removing air from intervening spaces (13) between sheets (4), characterised in that there is disposed, between two stacks to which sheets are fed, a cavity (31) of a suction device (23) whose boundary walls (43, 44), which are provided with air apertures (41, 42), adjoin a lateral face (26, 27) of a stack in each case.
- Arrangement according to claim 8, characterised in that the boundary walls (43, 44) touch one another at certain points and are connected to one another at said points.
- Arrangement according to claim 9, characterised in that the boundary walls (43, 44) are preferably provided, in the contact regions (48 ... 51), with further apertures (52) whose cross-sections are larger than those of the air apertures (41, 42).
- Arrangement according to one or more of claims 8 to 10, characterised in that the cavity (31) is provided, at certain points, with throttling elements (53) for the air.
- Arrangement according to one or more of claims 8 to 11, characterised in that suction devices (14, 22, 23, 24) are associated with that face (15) of the stack which lies opposite the sheet infeed (6), and also with both the lateral faces of said stack.
- Arrangement according to one or more of claims 8 to 12, characterised in that at least one suction device has aligning faces (37 ... 39), which are provided with air apertures (41, 42), for the sheets (4) of a stack face.
- Arrangement according to claim 13, characterised in that the aligning faces are connected to an oscillating drive (33 ... 36) which generates oscillations.
- Arrangement according to claim 13 and/or claim 14, characterised in that at least one aligning face is constructed as the boundary wall of a cavity (29 ... 32) which is connected to a vacuum source (19).
- Arrangement according to one or more of claims 8 to 15, characterised in that at least one further suction device (41 a, 42 a) is provided above (47) the region (12) of the feeding-in apparatus (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914068A DE19914068A1 (en) | 1999-03-27 | 1999-03-27 | Method and arrangement for removing air pockets when forming stacks from sheets |
DE19914068 | 1999-03-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1041029A2 EP1041029A2 (en) | 2000-10-04 |
EP1041029A3 EP1041029A3 (en) | 2001-10-31 |
EP1041029B1 true EP1041029B1 (en) | 2005-01-19 |
Family
ID=7902724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00105265A Expired - Lifetime EP1041029B1 (en) | 1999-03-27 | 2000-03-14 | Method and device for removing air inclusions during the formation of stacks of sheets |
Country Status (10)
Country | Link |
---|---|
US (1) | US6364312B1 (en) |
EP (1) | EP1041029B1 (en) |
JP (1) | JP2000296963A (en) |
CN (1) | CN1177744C (en) |
AT (1) | ATE287372T1 (en) |
BR (1) | BR0001428A (en) |
CA (1) | CA2302002C (en) |
DE (2) | DE19914068A1 (en) |
ES (1) | ES2233234T3 (en) |
PT (1) | PT1041029E (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10134425A1 (en) * | 2001-07-19 | 2003-02-06 | Jagenberg Querschneider Gmbh | Device for stacking sheets, in particular sheets of paper or cardboard that are fed in shingled form on pallets |
DE50203751D1 (en) * | 2002-05-02 | 2005-09-01 | Siempelkamp Handling Sys Gmbh | Device for depositing thin plates with minimized slippage between the plates |
DE202006010955U1 (en) * | 2006-07-14 | 2006-09-07 | Man Roland Druckmaschinen Ag | Suction unit for sheet delivery of printers has base wall with air passages level with sheet supply path and defining with an engagement wall a suction gap to pick up air stream flowing over sheet stack |
ES2689873T3 (en) * | 2008-09-17 | 2018-11-16 | Bw Papersystems Stuttgart Gmbh | Collection and transport device for piles formed by layers of sheets |
DE102009040918A1 (en) * | 2009-09-11 | 2011-03-17 | Focke & Co.(Gmbh & Co. Kg) | Apparatus and method for handling stacks of print media |
CN102350805B (en) * | 2011-09-23 | 2012-10-31 | 张家港先锋自动化机械设备有限公司 | Thin film pressing device |
CN113734870A (en) * | 2020-05-27 | 2021-12-03 | 四川卡库机器人科技有限公司 | Sheet material stop device and stacking device |
CN112454607B (en) * | 2020-12-04 | 2022-04-12 | 河南海格尔高温材料有限公司 | Negative pressure type exhaust device for processing prefabricated block |
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US1743921A (en) * | 1927-12-17 | 1930-01-14 | Claybourn Process Corp | Method of drying freshly-printed sheets and apparatus therefor |
US2624577A (en) * | 1950-09-07 | 1953-01-06 | William R Peugnet | Paper jogging machine |
DE938698C (en) * | 1952-11-30 | 1956-02-02 | Jagenberg Werke Ag | Sheet offsets on cross-cutting machines or other sheet-ejecting machines |
US2745538A (en) * | 1954-07-12 | 1956-05-15 | Lamb Grays Harbor Co Inc | Sheet spreading conveyor |
GB885351A (en) * | 1959-05-06 | 1961-12-28 | Warren S D Co | Improvements relating to sheet stacking apparatus |
GB914468A (en) * | 1960-09-28 | 1963-01-02 | Guthrie William Gifford | Improvements in or relating to printing machinery |
US3411829A (en) * | 1966-08-04 | 1968-11-19 | Sperry Rand Corp | Sheet handling system employing an all-fluid transport technique |
US3556519A (en) * | 1967-06-23 | 1971-01-19 | Leo Keller | Method and apparatus for stacking paper sheets or the like |
GB1211546A (en) * | 1967-09-27 | 1970-11-11 | John Peter Bennett | Improvements in or relating to apparatus for stacking sheets |
DE1906696A1 (en) * | 1969-02-11 | 1970-09-03 | Mabeg Maschb Gmbh Nachf Hense | Sheet delivery device |
GB1414628A (en) * | 1971-12-02 | 1975-11-19 | Dooley J E | Sheet stack squaring apparatus |
DE2627390A1 (en) * | 1975-09-19 | 1977-03-31 | Taylor Ruel E | DEVICE AND METHOD FOR MANUFACTURING SEVERAL LEVELED EDGE STACKS OF FLEXIBLE ARCHES |
US4069541A (en) * | 1976-04-23 | 1978-01-24 | U.S. Floor Systems, Inc. | Cleaning method and apparatus |
DE3403209A1 (en) | 1983-02-12 | 1984-08-16 | E.C.H. Will (Gmbh & Co), 2000 Hamburg | Device for removing air inclusions from piles of paper |
DE3601293A1 (en) * | 1986-01-17 | 1987-07-23 | Waertsilae Strecker Gmbh | ARC STACKING DEVICE |
JP2900288B2 (en) * | 1990-11-30 | 1999-06-02 | コニカ株式会社 | Sheet-like stacking device |
DE4201480C2 (en) * | 1992-01-21 | 1997-02-13 | Heidelberger Druckmasch Ag | Device for depositing printed sheets on a stack |
DE9115032U1 (en) * | 1991-12-04 | 1992-01-16 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De | |
JPH05319666A (en) * | 1992-05-20 | 1993-12-03 | Ricoh Co Ltd | Paper discharge base for printing device |
US5470420A (en) * | 1992-07-31 | 1995-11-28 | Eastman Kodak Company | Apparatus for label application using Bernoulli Effect |
DE19501874C2 (en) * | 1995-01-23 | 2001-09-20 | Koenig & Bauer Ag | Sheet deposit system in printing machines with dryers |
DE19523699A1 (en) | 1995-06-29 | 1997-01-09 | Will E C H Gmbh & Co | Device for removing air pockets from paper stacks |
DE19635401C1 (en) * | 1996-08-31 | 1997-12-18 | Roland Man Druckmasch | Device for laying sheets on stack, particularly for sheet printing machines |
US6116593A (en) * | 1996-11-18 | 2000-09-12 | Heidelberg Harris, Inc. | Method and apparatus for non-contact deceleration of flat products |
DE19753890C1 (en) * | 1997-12-05 | 1999-07-15 | Roland Man Druckmasch | Sheet spreader for printer |
-
1999
- 1999-03-27 DE DE19914068A patent/DE19914068A1/en not_active Withdrawn
-
2000
- 2000-03-14 EP EP00105265A patent/EP1041029B1/en not_active Expired - Lifetime
- 2000-03-14 AT AT00105265T patent/ATE287372T1/en not_active IP Right Cessation
- 2000-03-14 PT PT00105265T patent/PT1041029E/en unknown
- 2000-03-14 DE DE50009252T patent/DE50009252D1/en not_active Expired - Fee Related
- 2000-03-14 ES ES00105265T patent/ES2233234T3/en not_active Expired - Lifetime
- 2000-03-23 CA CA002302002A patent/CA2302002C/en not_active Expired - Fee Related
- 2000-03-24 JP JP2000084779A patent/JP2000296963A/en active Pending
- 2000-03-24 BR BR0001428-1A patent/BR0001428A/en active Search and Examination
- 2000-03-27 US US09/536,323 patent/US6364312B1/en not_active Expired - Fee Related
- 2000-03-27 CN CNB001048058A patent/CN1177744C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2233234T3 (en) | 2005-06-16 |
DE19914068A1 (en) | 2000-09-28 |
DE50009252D1 (en) | 2005-02-24 |
EP1041029A3 (en) | 2001-10-31 |
JP2000296963A (en) | 2000-10-24 |
ATE287372T1 (en) | 2005-02-15 |
US6364312B1 (en) | 2002-04-02 |
BR0001428A (en) | 2000-10-17 |
CN1177744C (en) | 2004-12-01 |
CA2302002C (en) | 2007-09-04 |
CA2302002A1 (en) | 2000-09-27 |
CN1269319A (en) | 2000-10-11 |
EP1041029A2 (en) | 2000-10-04 |
PT1041029E (en) | 2005-05-31 |
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