EP1041029A2 - 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
- EP1041029A2 EP1041029A2 EP00105265A EP00105265A EP1041029A2 EP 1041029 A2 EP1041029 A2 EP 1041029A2 EP 00105265 A EP00105265 A EP 00105265A EP 00105265 A EP00105265 A EP 00105265A EP 1041029 A2 EP1041029 A2 EP 1041029A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- stack
- sheets
- arrangement according
- stacks
- 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
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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 air pockets when forming stacks from sheets, which are successively fed to a stack to be formed and placed on it.
- the invention also relates to an arrangement for removing air pockets when forming stacks from sheets with a feed device for successively feeding the sheets to the stack to be formed, on which they are deposited.
- Sheets are to be understood as sheets of paper, cardboard or plastic such as foils. The size of the bow can vary within wide limits. So z. B. treat stacks of sheets the size of conventional copy paper or of smaller or multiple sizes according to the invention. In the production of sheets, these are often accumulated in stacks (also called giants) and then fed to further processing, in which they are used e.g. B. be wrapped with wrapping material.
- this object is achieved in that air is sucked out of spaces between the sheets in the feed area of the sheets.
- air when air is extracted, what is meant above all is that air which can lead to harmful air inclusions between arches, or that air which is already between arches.
- An advantageous development of the method according to the invention consists in sucking off air on the surface of the stack opposite the sheet feeder.
- air is drawn off on at least one of the surfaces (side surfaces) of the stack which run parallel to the direction of the sheet feed. If two stacks arranged side by side are formed by sheets, air can be sucked out on each side surface of a stack by a suction device arranged between the stacks.
- a particularly advantageous embodiment of the method according to the invention consists in the fact that suction devices for sucking out the air perform oscillating alignment movements for surfaces of the stack.
- the effect of the extraction of disruptive air can be improved in a further embodiment of the invention in that air is sucked off above the supply area, because disruptive air supplied by the sheets is then gently removed.
- air can be sucked through openings in boundary walls into cavities of suction devices, so-called vacuum chambers.
- a particularly advantageous development of a suction of air from the side surfaces of two stacks arranged side by side can be achieved in that boundary walls of the cavity (vacuum chamber) of a suction device arranged between two stacks approach each other and touch them in places and are connected to each other there.
- any undesired air pressure differences that occur on both sides of the hollow body can compensate. It can also serve to homogenize the suction if the flow of air in the cavity is at least partially throttled or interrupted.
- a suction device for removing air from spaces between sheets is provided in the area of the feed device.
- the invention can preferably be used in the case of a feed device which laterally feeds and deposits on the stack and which can be designed as a conveyor belt.
- a suction device can be characterized by a suction device assigned to the surface of the stack opposite the feeding device for removing air from spaces between sheets. It can also be assigned to at least one of the surfaces of the stack running parallel to the direction of the sheet feed, preferably both surfaces (side surfaces).
- a suction device can have an alignment surface provided with air openings for the sheets of a stacking surface.
- Such an alignment surface can preferably be connected to an oscillating drive which vibrates the surface.
- an alignment surface can be designed as a boundary wall of a cavity connected to a vacuum source.
- a suction device is particularly advantageous, the cavity of which has boundary walls provided with air openings, each of which is assigned to a side face of a stack.
- Such an arrangement of a suction device is particularly space-saving and not very expensive.
- the boundary walls of such a suction device can touch in places and be connected to one another there.
- boundary walls can then preferably be provided with further openings in the contact areas, the cross sections of which are larger than those of the air openings.
- the cavity can be provided in places with throttle elements for the air.
- the air conditions in the feed area of the sheets can be improved in the sense of reducing the air inclusions in that a suction device is also arranged above the sheet feed area, so that air conveyed over the stack can also be sucked off.
- the advantage associated with the invention is that the formation of Air pockets are largely prevented during the stack build-up, so that later pressing of the stack is always a considerable effort requires, superfluous.
- the boundary surfaces of the suction devices can, if they are set in vibration, additionally as alignment surfaces for the stacks serve.
- Figures 1 and 2 show schematically a pallet 1, which carries two stacks 2 and 3 from sheet 4.
- the sheets can be sheets of normal copy paper size or a smaller or larger size.
- the sheets can also be made of cardboard or plastic.
- the sheets 4 are shown with large gaps 13, which they do not have in reality. Rather, the sheets are stacked on top of each other. They are successively fed laterally from feed devices 6 in the form of conveyor belts 7 (only one can be seen in FIG. 1) in the direction of arrow 8 and placed on stacks 2 and 3.
- the conveyor belts 7 are discharge belts of a machine, not shown, for producing the sheets, for. B.
- a so-called small format cutter for example of the known type SLK from the applicant or a cutting machine producing larger formats, for example of the type FFS from the applicant, which produces the so-called folio sheet.
- the pallet 1 is lowered by a conventional lifting device, not shown, so that the stack surfaces at least approximately maintain the same heights relative to the conveyor belts 7.
- suction devices for removing, ie sucking out harmful air pockets from the spaces 13 between the sheets 4 are arranged. In the following, the extracted air inclusions are only used as Air "spoken.
- a first suction device 14 is located opposite the feed device 6 and has a vacuum box 17 which is assigned to the surfaces 15 of the stacks 2 and 3 and is provided with air openings 16 and is connected to a vacuum source 18, for example in the form of a fan 19.
- the air sucked in from the spaces 13 (air inclusions) passes through the air openings 16 into the vacuum box 17 according to the arrows 21 and from there according to the arrows 20 to the fan 19.
- there are 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 (according to arrow 8).
- These suction devices also have vacuum boxes 29, 31 and 32, which are provided with air openings (not shown in FIG. 2) and are connected to the fan 19 via lines corresponding to the arrows 20, so that the extracted air according to the arrows 21 into the vacuum box and from there can flow according to the arrows 20 to the fan 19.
- the vacuum boxes 29, 31 and 32 are caused by vibrating drives 33 and 34 and 36 respectively to carry out vibrations, so that their suction surfaces 37 and 38 a, 38 b and 39, in addition to suctioning off the air inclusions, also for aligning the stack side surfaces 25 or 26 or 27 or 28 can serve.
- the design of the suction devices 22 and 24 which act on the outer side surfaces 25 and 28 of the stacks 2 and 3 can be substantially the same.
- FIGS. 3 and 4 show the vacuum case 31 of the suction device 23, in which air from the spaces 13 of the stacks 2 is provided in a first suction area 40 through air openings 41, 42 in the boundary walls 43 and 44 designed as suction surfaces 38 a, 38 b and 3 flows in accordance with arrows 46.
- a further suction area 47 above the stacks 2 and 3 there are further air openings 41 a and 42 a, from which air entrained by the bends is extracted, which also reduces the risk of air pockets being formed.
- the boundary walls 43, 44 which also serve as alignment surfaces for the side surfaces 26, 27 of the stacks 2 and 3, are retracted in places and approach each other until they are in the areas 48, 49, 51 (51 only from FIG. 4 visible) touch.
- the boundary walls can be connected to one another in these regions.
- a lock 53 also serves to improve the air flow in the suction device 23.
- the special design of the suction device 23, which can then be designed like the suction device 24, is omitted.
- the boundary walls of the suction devices provided with suction openings for this purpose can advantageously also be used to align the stacking surfaces if they are displaced by shaking movements.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Materials For Photolithography (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Pile Receivers (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Separation Using Semi-Permeable Membranes (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.
Die Erfindung betrifft außerdem eine Anordnung zum Entfernen von Lufteinschlüssen
beim Bilden von Stapeln aus Bogen mit einer Zufuhreinrichtung zum aufeinanderfolgendem
Zuführen der Bogen zu dem zu bildenden Stapel, auf dem sie abgelegt
werden.
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 der 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.
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
im Zufuhrbereich der Bogen Luft aus Zwischenräumen der Bogen abgesaugt wird.
Bei der Erwähnung von abgesaugter Luft ist im Folgenden vor allem diejenige Luft
gemeint, die zu schädlichen Lufteinschlüssen zwischen Bogen führen kann, oder
diejenige Luft, die sich schon zwischen Bogen befindet.
Eine vorteilhafte Weiterbildung des Verfahrens gemäß der Erfindung besteht darin,
Luft auf der der Bogenzufuhr gegenüberliegenden Fläche des Stapels abzusaugen.
Bei einer weiteren vorteilhaften Ausgestaltung des Verfahrens gemäß der Erfindung
wird Luft auf mindestens einer der parallel zu der Richtung der Bogenzufuhr verlaufenden
Flächen (Seitenflächen) des Stapels abgesaugt. Werden von Bogen zwei
nebeneinander angeordnete Stapel gebildet, so kann Luft auf jeweils einer Seitenfläche
eines Stapels von einer zwischen den Stapeln angeordneten Absaugvorrichtung
abgesaugt werden. 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 air pockets when forming stacks from sheets, which are successively fed to a stack to be formed and placed on it.
The invention also relates to an arrangement for removing air pockets when forming stacks from sheets with a feed device for successively feeding the sheets to the stack to be formed, on which they are deposited.
Sheets are to be understood as sheets of paper, cardboard or plastic such as foils. The size of the bow can vary within wide limits. So z. B. treat stacks of sheets the size of conventional copy paper or of smaller or multiple sizes according to the invention.
In the production of sheets, these are often accumulated in stacks (also called giants) and then fed to further processing, in which they are used e.g. B. be wrapped with wrapping material. The transport of uncovered stacks requires special care because, due to the air trapped between the sheets during the formation of the stacks, individual sheets or entire sheet layers can easily be displaced, during which a stack loses its desired, usually cuboid, configuration. This can lead to damage during further transport, which can render the entire stack unusable.
To remove such air pockets z. B. known from DE 195 23 699 A 1 or
The object on which the invention is based is to create a new and advantageous method and a corresponding arrangement for the purpose of producing stacks without interfering air pockets.
According to the method according to the invention, this object is achieved in that air is sucked out of spaces between the sheets in the feed area of the sheets. In the following, when air is extracted, what is meant above all is that air which can lead to harmful air inclusions between arches, or that air which is already between arches.
An advantageous development of the method according to the invention consists in sucking off air on the surface of the stack opposite the sheet feeder. In a further advantageous embodiment of the method according to the invention, air is drawn off on at least one of the surfaces (side surfaces) of the stack which run parallel to the direction of the sheet feed. If two stacks arranged side by side are formed by sheets, air can be sucked out on each side surface of a stack by a suction device arranged between the stacks. A particularly advantageous embodiment of the method according to the invention consists in the fact that suction devices for sucking out the air perform oscillating alignment movements for surfaces of the stack. The effect of the extraction of disruptive air can be improved in a further embodiment of the invention in that air is sucked off above the supply area, because disruptive air supplied by the sheets is then gently removed. Here, air can be sucked through openings in boundary walls into cavities of suction devices, so-called vacuum chambers.
A particularly advantageous development of a suction of air from the side surfaces of two stacks arranged side by side can be achieved in that boundary walls of the cavity (vacuum chamber) of a suction device arranged between two stacks approach each other and touch them in places and are connected to each other there. If it is ensured that air can flow through further openings with larger cross sections in the areas of the contacting boundary walls, then any undesired air pressure differences that occur on both sides of the hollow body can compensate. It can also serve to homogenize the suction if the flow of air in the cavity is at least partially throttled or interrupted.
Die eingangs genannte Anordnung ist dadurch gekennzeichnet, daß im Bereich der
Zufuhreinrichtung mindestens eine Absaugvorrichtung zum Entfernen von Luft aus
Zwischenräumen zwischen Bogen vorgesehen ist.
Die Erfindung ist bevorzugt anwendbar bei einer Bogen seitlich zuführenden und
auf den Stapel ablegenden Zufuhreinrichtung, die als Förderband ausgebildet sein
kann. Eine Absaugvorrichtung kann gemäß einer Weiterbildung der Erfindung gekennzeichnet
sein durch eine der der Zufuhreinrichtung gegenüberliegenden Fläche
des Stapels zugeordnete Absaugvorrichtung zum Entfernen von Luft aus Zwischenräumen
zwischen Bogen. Sie kann auch mindestens einer der parallel zu der Richtung
der Bogenzufuhr verlaufenden Flächen des Stapels, vorzugsweise beiden Flächen
(Seitenflächen), zugeordnet sein. The arrangement mentioned at the outset is characterized in that at least one suction device for removing air from spaces between sheets is provided in the area of the feed device.
The invention can preferably be used in the case of a feed device which laterally feeds and deposits on the stack and which can be designed as a conveyor belt. According to a development of the invention, a suction device can be characterized by a suction device assigned to the surface of the stack opposite the feeding device for removing air from spaces between sheets. It can also be assigned to at least one of the surfaces of the stack running parallel to the direction of the sheet feed, preferably both surfaces (side surfaces).
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. Bei der Bildung von zwei nebeneinander angeordneten
Stapeln, denen jeweils Bogen zugeführt sind, ist eine Absaugvorrichtung besonders
vorteilhaft, deren Hohlraum mit Luftöffnungen versehene Begrenzungswände
aufweist, die jeweils einer Seitenfläche eines Stapel zugeordnet sind. Eine
derartige Anordnung einer 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.A suction device can have an alignment surface provided with air openings for the sheets of a stacking surface. Such an alignment surface can preferably be connected to an oscillating drive which vibrates the surface. According to a preferred development of the invention, an alignment surface can be designed as a boundary wall of a cavity connected to a vacuum source. In the formation of two stacks arranged side by side, each of which is fed with sheets, a suction device is particularly advantageous, the cavity of which has boundary walls provided with air openings, each of which is assigned to a side face of a stack. Such an arrangement of a suction device is particularly space-saving and not very expensive. The boundary walls of such a suction device can touch in places and be connected to one another there. These boundary walls can then preferably be provided with further openings in the contact areas, the cross sections of which are larger than those of the air openings. In a further embodiment of the invention, the cavity can be provided in places with throttle elements for the air.
According to a further embodiment of the invention, the air conditions in the feed area of the sheets can be improved in the sense of reducing the air inclusions in that a suction device is also arranged above the sheet feed area, so that air conveyed over the stack can also be sucked off.
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 are largely prevented during the stack build-up, so that later pressing of the stack is always a considerable effort requires, superfluous. The boundary surfaces of the suction devices can, if they are set in vibration, additionally as alignment surfaces for the stacks serve.
Die Erfindung wird anhand eines Ausführungsbeispiels näher erläutert.The invention is explained in more detail using an exemplary 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
- Figure 1
- a side view of a delivery station for sheets that are fed to two stacks,
- Figure 2
- a view according to arrow A in Figure 1
- Figure 3
- Details of a suction device arranged between the stacks on an enlarged scale,
- Figure 4
- a section (not to scale) through the suction device according to 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 pallet 1, which carries two
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 Unterdruckkasen 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
nähern sich einander an, bis sie sich in den Bereichen 48, 49, 51 (51 nur aus Figur
4 ersichtlich) 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
In the
FIGS. 3 and 4 show the
Wird die Erfindung zum Entfernen von Lufteinschlüssen bei nur einem Stapel eingesetzt,
dann entfällt die besondere Ausbildung der Absaugvorrichtung 23, die
dann wie die Absaugvorrichtung 24 ausgebildet sein kann. In diesem Fall sind dann
außer der Frontabsaugung entsprechend 14 nur zwei seitliche Absaugvorrichtungen
entsprechend 22 und 24 vorhanden.
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.If the invention is used to remove air inclusions in only one stack, the special design of the
With the method and the arrangement described, it is possible to sufficiently reduce the formation of air inclusions even at the beginning, namely during stack formation. The boundary walls of the suction devices provided with suction openings for this purpose can advantageously also be used to align the stacking surfaces if they are displaced by shaking movements.
Claims (25)
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 true EP1041029A2 (en) | 2000-10-04 |
EP1041029A3 EP1041029A3 (en) | 2001-10-31 |
EP1041029B1 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) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1359105A1 (en) * | 2002-05-02 | 2003-11-05 | Siempelkamp Handling Systeme GmbH & Co. | Device for depositing thin panels with a minimized sliding between the panels |
EP1878678A2 (en) * | 2006-07-14 | 2008-01-16 | MAN Roland Druckmaschinen AG | Suction extraction assembly for an extension on a sheet fed printing press |
CN102350805A (en) * | 2011-09-23 | 2012-02-15 | 张家港先锋自动化机械设备有限公司 | Thin film pressing device |
Families Citing this family (5)
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 |
WO2010031538A2 (en) * | 2008-09-17 | 2010-03-25 | Bielomatik Leuze Gmbh + Co. Kg | Collecting and transport device for a stack 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 |
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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-
2000
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- 2000-03-14 DE DE50009252T patent/DE50009252D1/en not_active Expired - Fee Related
- 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 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 BR BR0001428-1A patent/BR0001428A/en active Search and Examination
- 2000-03-24 JP JP2000084779A patent/JP2000296963A/en active Pending
- 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
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1359105A1 (en) * | 2002-05-02 | 2003-11-05 | Siempelkamp Handling Systeme GmbH & Co. | Device for depositing thin panels with a minimized sliding between the panels |
EP1878678A2 (en) * | 2006-07-14 | 2008-01-16 | MAN Roland Druckmaschinen AG | Suction extraction assembly for an extension on a sheet fed printing press |
EP1878678A3 (en) * | 2006-07-14 | 2010-08-04 | manroland AG | Suction extraction assembly for an extension on a sheet fed printing press |
CN102350805A (en) * | 2011-09-23 | 2012-02-15 | 张家港先锋自动化机械设备有限公司 | Thin film pressing device |
Also Published As
Publication number | Publication date |
---|---|
JP2000296963A (en) | 2000-10-24 |
CN1269319A (en) | 2000-10-11 |
CA2302002A1 (en) | 2000-09-27 |
ES2233234T3 (en) | 2005-06-16 |
DE19914068A1 (en) | 2000-09-28 |
DE50009252D1 (en) | 2005-02-24 |
BR0001428A (en) | 2000-10-17 |
EP1041029A3 (en) | 2001-10-31 |
CA2302002C (en) | 2007-09-04 |
US6364312B1 (en) | 2002-04-02 |
EP1041029B1 (en) | 2005-01-19 |
ATE287372T1 (en) | 2005-02-15 |
CN1177744C (en) | 2004-12-01 |
PT1041029E (en) | 2005-05-31 |
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