EP1008541B1 - Rotary slide valve - Google Patents

Rotary slide valve Download PDF

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Publication number
EP1008541B1
EP1008541B1 EP98811214A EP98811214A EP1008541B1 EP 1008541 B1 EP1008541 B1 EP 1008541B1 EP 98811214 A EP98811214 A EP 98811214A EP 98811214 A EP98811214 A EP 98811214A EP 1008541 B1 EP1008541 B1 EP 1008541B1
Authority
EP
European Patent Office
Prior art keywords
opening
valve
suction
drum
sliding member
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
Application number
EP98811214A
Other languages
German (de)
French (fr)
Other versions
EP1008541A1 (en
Inventor
Peter Wagner
CHRISTOPH SäGESSER
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.)
Grapha Holding AG
Original Assignee
Grapha Holding 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
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Application filed by Grapha Holding AG filed Critical Grapha Holding AG
Priority to DE59808084T priority Critical patent/DE59808084D1/en
Priority to EP98811214A priority patent/EP1008541B1/en
Priority to US09/451,137 priority patent/US6357479B1/en
Priority to JP11347729A priority patent/JP2000170928A/en
Publication of EP1008541A1 publication Critical patent/EP1008541A1/en
Application granted granted Critical
Publication of EP1008541B1 publication Critical patent/EP1008541B1/en
Anticipated expiration legal-status Critical
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/30Opening devices for folded sheets or signatures
    • B65H5/305Opening devices for folded sheets or signatures comprising rotary means for opening the folded sheets
    • B65H5/307Opening devices for folded sheets or signatures comprising rotary means for opening the folded sheets two opposite rotary means, both having gripping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/08Separating articles from piles using pneumatic force
    • B65H3/0808Suction grippers
    • B65H3/0891Generating or controlling the depression
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/45Folding, unfolding
    • B65H2301/453Folding, unfolding opening folded material
    • B65H2301/4531Folding, unfolding opening folded material by opposite opening drums
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86574Supply and exhaust
    • Y10T137/86638Rotary valve

Definitions

  • the invention relates to a rotary slide valve according to the preamble of claim 1.
  • Such rotary slide valves are used in particular to control the vacuum of suction cups, which are arranged on opening drums of a feeder are. With such opening drums envelopes and am Head closed fold sheets opened and open without overlap a collection chain can be stored.
  • the rotary slide valve is here at one end of the shaft provided with suction cups Opening drum arranged and with a flexible line a vacuum pump or other suitable vacuum source connected. With every revolution of the opening drums the suction cups are connected to the vacuum source.
  • the ones to be opened Rags of the sheets are sucked in and when turning the Opening drums are the center of the envelopes or folded sheets open.
  • the suction cups are then ventilated again and the envelopes or folded sheets spread on the collection chain issued. It is now essential that the time of suction and ventilation exactly on the envelopes or folded sheets and in particular are adapted to their format.
  • the suction cups can Adaptation to different products on the circumference of the opening drum be adjusted.
  • the valve plate on which the flexible valve line is arranged, adjust.
  • the optimal setting was therefore So far comparatively complex and had to stand Drum.
  • JP 05 092 679 A is a generic rotary slide valve become known in which a valve plate 22nd is provided for setting the suction time is rotatable.
  • a clamping ring 24 is provided releasably with the valve plate by means of a locking screw 25 is connectable. To adjust the valve plate, this must be done Clamping ring can be released.
  • the rotary slide valve sits on End of a hollow shaft of the opening drum. To set the The opening drum must stand still at the time of opening. A Setting during the run is therefore not possible here.
  • the invention has for its object a rotary slide valve to create the genus mentioned, which is particularly suitable for an opening drum of a feeder and that easier setting of the start and end of suction allows.
  • the task is according to the characteristics of claim 1 solved.
  • the rotary slide valve when the valve is fixed Suction time, the time of ventilation and thus the size of the suction angle can be adjusted in a predetermined range. By adjusting the ventilation time, the Suction angle smaller or larger. This is with a device according to DE 10 24 529 B not possible because of ventilation is not provided in this way.
  • the rotary slide valve preferably has a slide, which is adjustable in the barrel to change the size of the suction angle and in particular is rotatable.
  • the rotary slide valve can be realized with comparatively few robust parts.
  • the rotary slide valve consists of a valve plate to which the flexible vacuum line is attached, a sliding body and a control disk as a means for adjusting the size of the suction angle.
  • the slider is fixed on a shaft and rotates with it.
  • the rotatable control disc is arranged at the outer end of the shaft and has an axial passage that connects to a suction channel through an opening in the sliding body. This suction channel preferably leads through the shaft of the opening drums.
  • the valve plate has a recess which extends in the circumferential direction and in which a slide is mounted which divides this recess into two chambers. One chamber is connected to the vacuum source through a passage and the other chamber is connected to a ventilation opening via a passage.
  • This version also essentially requires only three simple and robust parts.
  • the rotary slide valve is preferred for a suction drum, in particular opening drum of an investor, in particular for used a saddle stitcher.
  • the rotary slide valve 1 according to the first variant points in accordance with Figures 1 and 2, a valve plate 10, a sliding body 12 and a control disc 22.
  • the preferred made of plastic valve plate 10 has a channel 19 with an opening 11 on which a flexible vacuum line 16 is connected to a vacuum pump 2 or another vacuum source.
  • a central, continuous Bore 15 takes a hollow shaft 5 of an opening drum B. or C.
  • the valve plate 10 is with a machine housing 4 connected and thus arranged in relation to the shaft 5.
  • the channel 19 runs radially and besides that another opening 18 arranged on the circumference, which are directed against the sliding body 12 in the axial direction is.
  • the valve plate 10 is preferably attached to the housing 4 in such a way that they are loosened and rotated and thus the Opening 18 can be adjusted in the circumferential direction.
  • the sliding body 12 has a central bore 34 with a Groove 14 for receiving the shaft 5 and a wedge 13.
  • the wedge 13 engages in the groove 14 and connects the sliding body 12 rotatably with the shaft 5.
  • a kidney-shaped opening 20 is incorporated into the sliding body 12.
  • an edge in the sliding body 12 Recess 21 incorporated, which forms a ventilation opening.
  • the control disc 22 has an axially projecting, cylindrical Part 25 and a disc-shaped part 35.
  • the permanent according to Figure 2 is connected to a channel 7 of the shaft 5.
  • the Channel 7 has an opening 9 at the end, which connects to the passage 23 is hermetically connected.
  • the control disc 22 is fixed to the frame stored and can on the cylindrical part 25 in both directions of arrow 24 can be rotated.
  • the shaft 5 has a flat End face 36 on a flat inside 37 of the control disc 22 sliding and tight.
  • the part 25 For turning the control disc 22 in the directions of the double arrow 24 is the part 25 connected, for example, to two bevel gears 26.
  • the spur gears 26 and the lever 27 only form an example of a suitable adjustment 40.
  • Figure 3 shows two suction drums B and C, each at least have a sucker 6 and serve envelopes or folded sheet 38 with a top fold 38a on one here only deposit chain 29 indicated hint.
  • On the two suction drums C and B is another known per se Drum A arranged which the envelopes or folded sheets of pull off a stack not shown here and the two Feed suction drums B and C.
  • the envelopes to be opened or folded sheet 38 get from above between the two suction drums B and C rotating against each other according to arrows 37.
  • FIG. 3 there is a folded sheet 38 between the two suction drums B and C, so the two Rag of this sheet 38 sucked through the suction 6.
  • the Suction cups 6 are according to FIG. 2 on the corresponding shaft B. respectively.
  • suction cups 6 rotate with the shaft 5 and are depending on the position of the rotary valve 1 with the Vacuum source 2 or via the ventilation opening 21 with the ambient air connected.
  • Figures 1 and 2 show a position of the rotary slide valve 1, in which the suction cups 6 are connected to the vacuum source 2 and are thus active.
  • the kidney-shaped opening 20 of the sliding body 12 is in a position in which it connects the channel 19 of the valve plate 10 with the passage 23 of the control disk 22.
  • Line 8 shows the connection that leads from vacuum openings 6 to vacuum source 2.
  • the opening 20 in the suction drum C rotates clockwise.
  • the opening 18 is located at the beginning of the kidney-shaped opening 20. This position of the opening 20 relative to the opening 18 determines the starting point of the suction angle. If the sliding body 12 rotates clockwise with the opening 20, the suction devices 6 remain connected to the vacuum source 2 and are thus active.
  • FIG. 7 shows the position on which ambient air flows to the suction devices 6.
  • the suckers 6 are thus aerated and the folding sheet 38 is released from the opening drums B and C and dropped onto the collecting chain 29.
  • FIG. 6 shows this position of the suction cups 6, which, as mentioned, are ventilated and therefore inactive. It is now essential that this ventilation position is determined by the rotational position of the control disk 22 and in particular of the passage 23. If this ventilation position, and thus the time at which the folded sheets 38 are released, is to be adjusted, the passage 23 is adjusted by rotating the control disk 22 in the directions of the arrow 24.
  • the adjustment range is indicated by 31 in FIG. If the passage 23 is adjusted counterclockwise in FIG. 4, so the suction cups 6 are ventilated earlier and thus the Reduced suction angle. When moving the passage 23 in In contrast, clockwise ventilation is performed later.
  • FIG. 6 clearly shows the overlap of the passage 23 with the ventilation recess 21.
  • the suction openings 6a are thus connected to the ambient atmosphere via the passage 23 and the ventilation recess 21.
  • the kidney-shaped opening 20 is located outside the opening 18 and is therefore not connected to the vacuum source 2.
  • a significant advantage of the rotary slide valve 1 is seen in the fact that the vacuum source 2 does not suck into space, but is closed according to FIG. 8 by the overlap of the opening 18 by the sliding body 12.
  • the suction cups 6 are thus ventilated at a freely selectable point in time which is dependent on the position of the control disk 22 relative to the sliding body 12. Since, as mentioned, the control disc 22 is adjustable in the barrel, the ejection behavior, respectively. the time at which the sheets 38 are dropped onto the collecting chain 29 is optimized and the running speed is thus increased. In principle, this is also possible with the rotary slide valve 51 shown in FIGS. 9 to 12, which is explained in more detail below.
  • the rotary slide valve 51 is also on a hollow shaft 65 put on, which has a channel 67 with an opening 69.
  • a sliding body 72 has a central blind bore 70, in which engages the hollow shaft 65.
  • the channel 67 is permanent and airtight with a radially extending one Breakthrough 68 connected on a flat back 78 emerges in a radially extending opening 79, as Figure 12 clearly shows.
  • the slider 72 slides with its flat surface 78 on a valve plate 60, the preferably made of plastic and standing on the Machine frame, not shown, is attached here.
  • valve plate 60 In the surface 80 of valve plate 60 abutting sliding body 72 a recess 63 is worked in, which according to FIG is crescent-shaped and about half one in the middle arranged through hole 64 receives.
  • the valve plate 60 is preferably attached to the machine frame in such a way that it can be loosened and rotated.
  • a Slider 52 used, which has a cylindrical part 53, which according to Figure 12 on the back of the valve plate 60 stands out.
  • a guide pin protrudes 81 of the sliding body 72 in a bore 54 of the Slider 52 into it.
  • a radially protruding arm 55 is divided the recess 63 according to FIG. 11 in two chambers 73 and 74.
  • the recess 63 has two radially extending bores 59 and 61 connected, one according to Figure 9 on the circumference have emerging opening 58 or 71.
  • the opening 71 is via a flexible hose, not shown here, with the Vacuum source 2 connected.
  • the other opening 58 is open to Ambient atmosphere.
  • the chamber 73 is thus independent of the position of the slide 52 with the ambient atmosphere and chamber 74 is connected to vacuum source 2. The mode of action is below with reference to Figures 10 to 15 the opening drum B explained.
  • the opening drum B has at least one sucker 66 a suction opening 66a and rotates in the direction of arrow 82.
  • the shaft 65 and the sliding body 72 rotate in the same Direction.
  • the breakthrough 68 connects thus the channel 67 of the hollow shaft 65 with the bore 61 and thus with the vacuum source 2, as in FIG. 12 using the line 76 clearly shows.
  • the suction opening 66a is thus available the vacuum source 2 in connection. This connection is maintained until breakthrough 68 via opening 79 the chamber 73 reached and thus through the bore 59 and the opening 58 is connected to the ambient atmosphere.
  • the suction cup 66 is aerated with it.
  • the opening drum C rotates in the opposite direction, but works otherwise same as the opening drum B. Both drums B and C have its own rotary slide valve 51 and can thus can be set independently. Is essential also here that when the slide 52 is adjusted, the time of ventilation, but not the suction time is adjusted. Adjusting the time of suction is essential possible by rotating the valve plate 60. Go berserk the valve plate 60 in one of the directions of the double arrow 62, the suction edge 83 is rotated clockwise accordingly.
  • the suction device 66 is activated earlier, in the other case the activation takes place later. At the same time the ventilation time would be adjusted, but what can be prevented by holding the slide 52 can.
  • the slide 52 can also be adjusted via Bevel gears 26 or another suitable adjustment respectively.
  • Figures 13 to 15 show the rotary slide valve 51 in the Ventilation position.
  • the breakthrough 68 is thus here with the Chamber 73 connected, which in turn connects to the bore 59 owns.
  • the adjustment range of the slide 52 is in Figure 14 indicated by the double arrow 75. Will the angle according to double arrow 75 as reduced in Figure 14, so the suction cups 66 are ventilated earlier. The suction time, however, is not changed.
  • arrow 77 shows indicated the way through which ambient air to the suction cups 66 streams.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Sliding Valves (AREA)

Description

Die Erfindung betrifft ein Drehschieberventil nach dem Oberbegriff des Patentanspruchs 1. Solche Drehschieberventile werden insbesondere zum Steuern des Vakuums von Saugern verwendet, die an Öffnungstrommeln eines Anlegers angeordnet sind. Mit solchen Öffnungstrommeln können Umschläge und am Kopf geschlossene Falzbogen ohne Überfalz geöffnet und auf eine Sammelkette abgelegt werden. Das Drehschieberventil ist hierbei an einem Ende der mit Saugern versehenen Welle der Öffnungstrommel angeordnet und über eine flexible Leitung mit einer Vakuumpumpe oder einer anderen geeigneten Vakuumquelle verbunden. Bei jeder Umdrehung der Öffnungstrommeln werden die Sauger mit der Vakuumquelle verbunden. Die zu öffnenden Lappen der Bogen werden angesaugt und beim Weiterdrehen der Öffnungstrommeln werden die Umschläge bzw. Falzbogen mittig geöffnet. Anschliessend werden die Sauger wieder belüftet und die Umschläge bzw. Falzbogen gespreizt auf die Sammelkette abgegeben. Es ist nun wesentlich, dass der Saug- und Belüftungszeitpunkt genau an die Umschläge bzw. Falzbogen und insbesondere an deren Format angepasst sind. The invention relates to a rotary slide valve according to the preamble of claim 1. Such rotary slide valves are used in particular to control the vacuum of suction cups, which are arranged on opening drums of a feeder are. With such opening drums envelopes and am Head closed fold sheets opened and open without overlap a collection chain can be stored. The rotary slide valve is here at one end of the shaft provided with suction cups Opening drum arranged and with a flexible line a vacuum pump or other suitable vacuum source connected. With every revolution of the opening drums the suction cups are connected to the vacuum source. The ones to be opened Rags of the sheets are sucked in and when turning the Opening drums are the center of the envelopes or folded sheets open. The suction cups are then ventilated again and the envelopes or folded sheets spread on the collection chain issued. It is now essential that the time of suction and ventilation exactly on the envelopes or folded sheets and in particular are adapted to their format.

Bei einem bekannten Drehschieberventil können die Sauger zur Anpassung an unterschiedliche Produkte am Umfang der Öffnungstrommel verstellt werden. Zudem lässt sich die Ventilplatte, an welcher die flexible Ventilleitung angeordnet ist, verstellen. Beim Verstellen der Ventilplatte verschieben sich der Zeitpunkt zum Saugen sowie der Zeitpunkt zum Belüften gleichzeitig. Bisher war es somit erforderlich, beim Einstellen der Öffnungstrommel einerseits die Sauger am Umfang der Öffnungstrommel zu verstellen und andererseits die Steuerscheibe zu verstellen. Das optimale Einstellen war deshalb bisher vergleichsweise aufwendig und musste bei stehender Trommel vorgenommen werden.In a known rotary valve, the suction cups can Adaptation to different products on the circumference of the opening drum be adjusted. In addition, the valve plate, on which the flexible valve line is arranged, adjust. When adjusting the valve plate shift the time for suction and the time for ventilation simultaneously. So far it was necessary when setting the opening drum on the one hand the suction cups on the circumference of the To adjust the opening drum and on the other hand the control disc to adjust. The optimal setting was therefore So far comparatively complex and had to stand Drum.

Durch die JP 05 092 679 A ist ein gattungsgemässes Drehschieberventil bekannt geworden, bei welchem eine Ventilplatte 22 vorgesehen ist, die zur Einstellung des Saugzeitpunktes verdrehbar ist. Dazu ist ein Klemmring 24 vorgesehen, der mittels einer Feststellschraube 25 lösbar mit der Ventilplatte verbindbar ist. Zum Verstellen der Ventilplatte muss dieser Klemmring gelöst werden. Das Drehschieberventil sitzt am Ende einer Hohlwelle der Öffnungstrommel. Zum Einstellen des Öffnungszeitpunktes muss die Öffnungstrommel stillstehen. Eine Einstellung im Lauf ist hier somit nicht möglich.JP 05 092 679 A is a generic rotary slide valve become known in which a valve plate 22nd is provided for setting the suction time is rotatable. For this purpose, a clamping ring 24 is provided releasably with the valve plate by means of a locking screw 25 is connectable. To adjust the valve plate, this must be done Clamping ring can be released. The rotary slide valve sits on End of a hollow shaft of the opening drum. To set the The opening drum must stand still at the time of opening. A Setting during the run is therefore not possible here.

Der Erfindung liegt die Aufgabe zugrunde, ein Drehschieberventil der genannten Gattung zu schaffen, das sich insbesondere für eine Öffnungstrommel eines Anlegers eignet und das eine einfachere Einstellung der Sauganfangs- und -endzeitpunkte ermöglicht. Die Aufgabe ist gemäss Kennzeichen von Patentanspruch 1 gelöst. The invention has for its object a rotary slide valve to create the genus mentioned, which is particularly suitable for an opening drum of a feeder and that easier setting of the start and end of suction allows. The task is according to the characteristics of claim 1 solved.

Beim erfindungsgemässen Drehschieberventil kann bei festem Saugzeitpunkt der Belüftungszeitpunkt und damit die Grösse des Saugwinkels in einem vorbestimmten Bereich verstellt werden. Durch die Verstellung des Belüftungszeitpunktes wird der Saugwinkel kleiner oder grösser. Dies ist bei einer Vorrichtung nach der DE 10 24 529 B nicht möglich, da eine Belüftung auf diese Weise nicht vorgesehen ist. Vorzugsweise weist das Drehschieberventil einen Schieber auf, der im Lauf zur Veränderung der Grösse des Saugwinkels verstellbar und insbesondere drehbar ist.In the rotary slide valve according to the invention, when the valve is fixed Suction time, the time of ventilation and thus the size of the suction angle can be adjusted in a predetermined range. By adjusting the ventilation time, the Suction angle smaller or larger. This is with a device according to DE 10 24 529 B not possible because of ventilation is not provided in this way. The rotary slide valve preferably has a slide, which is adjustable in the barrel to change the size of the suction angle and in particular is rotatable.

Das erfindungsgemässe Drehschieberventil lässt sich mit vergleichsweise wenigen robusten Teilen realisieren.
In einer bevorzugten Ausführung besteht das Drehschieberventil aus einer Ventilplatte, an welcher die flexible Vakuumleitung angebracht ist, einem Gleitkörper sowie einer Steuerscheibe als Mittel zum Verstellen der Grösse des Saugwinkels. Der Gleitkörper ist fest auf einer Welle befestigt und rotiert mit dieser mit. Die verdrehbare Steuerscheibe ist am äusseren Ende der Welle angeordnet und besitzt einen achsialen Durchgang, der durch einen Durchbruch des Gleitkörpers mit einem Saugkanal verbindet. Dieser Saugkanal führt vorzugsweise durch die Welle der Öffnungstrommeln.
Bei einer Variante der Erfindung weist die Ventilplatte eine sich in Umfangsrichtung erstreckende Ausnehmung aus, in welcher ein Schieber gelagert ist, der diese Ausnehmung in zwei Kammern unterteilt. Die eine Kammer ist durch einen Durchgang mit der Vakuumquelle und die andere Kammer über einen Durchgang mit einer Belüftungsöffnung verbunden. Auch diese Ausführung erfordert im wesentlichen nur drei einfache und robuste Teile.
The rotary slide valve according to the invention can be realized with comparatively few robust parts.
In a preferred embodiment, the rotary slide valve consists of a valve plate to which the flexible vacuum line is attached, a sliding body and a control disk as a means for adjusting the size of the suction angle. The slider is fixed on a shaft and rotates with it. The rotatable control disc is arranged at the outer end of the shaft and has an axial passage that connects to a suction channel through an opening in the sliding body. This suction channel preferably leads through the shaft of the opening drums.
In a variant of the invention, the valve plate has a recess which extends in the circumferential direction and in which a slide is mounted which divides this recess into two chambers. One chamber is connected to the vacuum source through a passage and the other chamber is connected to a ventilation opening via a passage. This version also essentially requires only three simple and robust parts.

Bevorzugt wird das Drehschieberventil bei einer Saugtrommel, insbesondere Öffnungstrommel eines Anlegers, insbesondere für einen Sammelhefter verwendet.The rotary slide valve is preferred for a suction drum, in particular opening drum of an investor, in particular for used a saddle stitcher.

Weitere vorteilhafte Merkmale ergeben sich aus der nachfolgenden Beschreibung, den abhängigen Patentansprüchen sowie der Zeichnung.Further advantageous features result from the following Description, the dependent claims and the drawing.

Zwei Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
ein erfindungsgemässes Drehschieberventil mit auseinandergezogenen Teilen sowie einen Abschnitt einer Hohlwelle,
Fig. 2
schematisch eine geschnittene Ansicht des Drehschieberventils nach Figur 1,
Fig. 3
schematisch eine Ansicht von zwei Öffnungstrommeln, die jeweils ein erfindungsgemässes Drehschieberventil gemäss den Figuren 1 und 2 aufweisen, wobei hier die Sauger aktiv sind,
Fig. 4
schematisch eine Ansicht des Drehschieberventils,
Fig. 5
eine teilweise geschnittene Ansicht eines Drehschieberventils,
Fig. 6
eine Ansicht gemäss Figur 3, wobei die Sauger nicht aktiv sind,
Fig. 7
schematisch eine weitere Ansicht des Drehschieberventils gemäss Figur 1,
Fig. 8
schematisch eine weitere Ansicht des teilweise geschnittenen Drehschieberventils,
Fig. 9
schematisch eine Ansicht einer Variante des Drehschieberventils, wobei auch hier die Teile achsial auseinandergezogen sind,
Fig. 10
schematisch eine Ansicht zweier Öffnungstrommeln mit jeweils einem Drehschieberventil gemäss Figur 9,
Fig. 11
schematisch eine Ansicht des Drehschieberventils gemäss Figur 9,
Fig. 12
schematisch einen Schnitt durch das Drehschieberventil gemäss Figur 9,
Fig. 13
schematisch eine weitere Ansicht der beiden Öffnungstrommeln, wobei die Sauger inaktiv sind,
Fig. 14
schematisch eine weitere Ansicht des Drehschieberventils gemäss Figur 9, und
Fig. 15
schematisch einen weiteren Schnitt durch das Drehschieberventil gemäss Figur 9.
Two exemplary embodiments of the invention are explained in more detail below with reference to the drawing. Show it:
Fig. 1
a rotary slide valve according to the invention with parts pulled apart and a section of a hollow shaft,
Fig. 2
schematically a sectional view of the rotary slide valve of Figure 1,
Fig. 3
schematically a view of two opening drums, each having an inventive rotary slide valve according to FIGS. 1 and 2, the suction devices being active here,
Fig. 4
schematically a view of the rotary slide valve,
Fig. 5
a partially sectioned view of a rotary slide valve,
Fig. 6
3 a view according to FIG. 3, the suction devices being inactive,
Fig. 7
schematically another view of the rotary slide valve according to Figure 1,
Fig. 8
schematically another view of the partially cut rotary valve,
Fig. 9
schematically a view of a variant of the rotary slide valve, with the parts here also being pulled apart axially,
Fig. 10
schematically a view of two opening drums, each with a rotary slide valve according to FIG. 9,
Fig. 11
schematically a view of the rotary slide valve according to Figure 9,
Fig. 12
schematically a section through the rotary slide valve according to FIG. 9,
Fig. 13
schematically another view of the two opening drums, the suction cups being inactive,
Fig. 14
schematically another view of the rotary slide valve according to Figure 9, and
Fig. 15
schematically shows a further section through the rotary slide valve according to FIG. 9.

Das Drehschieberventil 1 gemäss der ersten Variante weist gemäss den Figuren 1 und 2 eine Ventilplatte 10, einen Gleitkörper 12 sowie eine Steuerscheibe 22 auf. Die vorzugsweise aus Kunststoff hergestellte Ventilplatte 10 weist einen Kanal 19 mit einer Öffnung 11 auf, an welcher eine flexible Vakuumleitung 16 angeschlossen ist, die zu einer Vakuumpumpe 2 oder einer anderen Vakuumquelle führt. Eine mittige, durchgehende Bohrung 15 nimmt eine Hohlwelle 5 einer Öffnungstrommel B oder C auf. Die Ventilplatte 10 ist mit einem Maschinengehäuse 4 verbunden und somit bezüglich der Welle 5 stehend angeordnet. Der Kanal 19 verläuft radial und besitzt ausser der am Umfang angeordneten Öffnung 11 eine weitere Öffnung 18, die in achsialer Richtung gegen den Gleitkörper 12 gerichtet ist. Die Ventilplatte 10 ist vorzugsweise so am Gehäuse 4 befestigt, dass sie gelöst und gedreht werden und damit die Öffnung 18 in Umfangsrichtung verstellt werden kann.The rotary slide valve 1 according to the first variant points in accordance with Figures 1 and 2, a valve plate 10, a sliding body 12 and a control disc 22. The preferred made of plastic valve plate 10 has a channel 19 with an opening 11 on which a flexible vacuum line 16 is connected to a vacuum pump 2 or another vacuum source. A central, continuous Bore 15 takes a hollow shaft 5 of an opening drum B. or C. The valve plate 10 is with a machine housing 4 connected and thus arranged in relation to the shaft 5. The channel 19 runs radially and besides that another opening 18 arranged on the circumference, which are directed against the sliding body 12 in the axial direction is. The valve plate 10 is preferably attached to the housing 4 in such a way that they are loosened and rotated and thus the Opening 18 can be adjusted in the circumferential direction.

Der Gleitkörper 12 besitzt eine zentrale Bohrung 34 mit einer Nut 14 zur Aufnahme der Welle 5 und eines Keils 13. Der Keil 13 greift in die Nut 14 ein und verbindet den Gleitkörper 12 drehfest mit der Welle 5. Im Abstand zur Bohrung 14 ist in den Gleitkörper 12 ein nierenförmiger Durchbruch 20 eingearbeitet. Weiter ist in den Gleitkörper 12 eine randständige Ausnehmung 21 eingearbeitet, die eine Belüftungsöffnung bildet.The sliding body 12 has a central bore 34 with a Groove 14 for receiving the shaft 5 and a wedge 13. The wedge 13 engages in the groove 14 and connects the sliding body 12 rotatably with the shaft 5. In the distance to the bore 14 is in a kidney-shaped opening 20 is incorporated into the sliding body 12. Next is an edge in the sliding body 12 Recess 21 incorporated, which forms a ventilation opening.

Die Steuerscheibe 22 weist einen achsial vorstehenden, zylindrischen Teil 25 und einen scheibenförmigen Teil 35 auf. In den scheibenförmigen Teil 35 ist ein sich radial erstreckender Durchgang 23 eingearbeitet, der gemäss Figur 2 dauernd mit einem Kanal 7 der Welle 5 verbunden ist. Dazu besitzt der Kanal 7 eine stirnseitige Öffnung 9, die mit dem Durchgang 23 luftdicht verbunden ist. Die Steuerscheibe 22 ist gestellfest gelagert und kann am zylindrischen Teil 25 in beiden Richtungen des Pfeils 24 gedreht werden. Zur Abdichtung der Welle 5 gegenüber der Steuerscheibe 22 besitzt die Welle 5 eine ebene Stirnfläche 36, die an einer ebenen Innenseite 37 der Steuerscheibe 22 gleitend und dicht anliegt. Zum Drehen der Steuerscheibe 22 in den Richtungen des Doppelpfeils 24 ist der Teil 25 beispielsweise mit zwei Kegelrädern 26 verbunden. Durch Drehen des Hebels 27 kann die Steuerscheibe 22 von Hand in der einen oder anderen Richtung des Pfeils 24 stufenlos verschoben werden. Die Stirnräder 26 und der Hebel 27 bilden lediglich ein Beispiel einer geeigneten Verstellmöglichkeit 40.The control disc 22 has an axially projecting, cylindrical Part 25 and a disc-shaped part 35. In the disc-shaped part 35 is a radially extending Passage 23 incorporated, the permanent according to Figure 2 is connected to a channel 7 of the shaft 5. For that the Channel 7 has an opening 9 at the end, which connects to the passage 23 is hermetically connected. The control disc 22 is fixed to the frame stored and can on the cylindrical part 25 in both directions of arrow 24 can be rotated. To seal the shaft 5 compared to the control disc 22, the shaft 5 has a flat End face 36 on a flat inside 37 of the control disc 22 sliding and tight. For turning the control disc 22 in the directions of the double arrow 24 is the part 25 connected, for example, to two bevel gears 26. By Turning the lever 27 can control disc 22 by hand in one or the other direction of the arrow 24 continuously shifted become. The spur gears 26 and the lever 27 only form an example of a suitable adjustment 40.

Die Figur 3 zeigt zwei Saugtrommeln B und C, die jeweils wenigstens einen Sauger 6 aufweisen und dazu dienen, Umschläge oder Falzbogen 38 mit einem Kopffalz 38a auf eine hier nur andeutungsweise gezeigte Sammelkette 29 abzulegen. Über den beiden Saugtrommeln C und B ist eine weitere an sich bekannte Trommel A angeordnet, welche die Umschläge bzw. Falzbogen von einem hier nicht gezeigten Stapel abziehen und den beiden Saugtrommeln B und C zuführen. Die zu öffnenden Umschläge bzw. Falzbogen 38 gelangen von oben zwischen die beiden Saugtrommeln B und C, die gemäss den Pfeilen 37 gegeneinander rotieren. Befindet sich gemäss Figur 3 ein Falzbogen 38 zwischen den beiden Saugtrommeln B und C, so werden die beiden Lappen dieses Falzbogens 38 durch die Sauger 6 angesaugt. Die Sauger 6 sind gemäss Figur 2 auf der entsprechenden Welle B resp. C angeordnet und weisen jeweils eine Saugöffnung 6a auf, die über eine Bohrung 6b mit dem Kanal 7 der Welle 5 verbunden ist. Die Sauger 6 drehen mit der Welle 5 mit und werden je nach der Stellung des Drehschieberventils 1 mit der Vakuumquelle 2 oder über die Belüftungsöffnung 21 mit der Umgebungsluft verbunden. Figure 3 shows two suction drums B and C, each at least have a sucker 6 and serve envelopes or folded sheet 38 with a top fold 38a on one here only deposit chain 29 indicated hint. On the two suction drums C and B is another known per se Drum A arranged which the envelopes or folded sheets of pull off a stack not shown here and the two Feed suction drums B and C. The envelopes to be opened or folded sheet 38 get from above between the two suction drums B and C rotating against each other according to arrows 37. According to FIG. 3 there is a folded sheet 38 between the two suction drums B and C, so the two Rag of this sheet 38 sucked through the suction 6. The Suction cups 6 are according to FIG. 2 on the corresponding shaft B. respectively. C arranged and each have a suction opening 6a on the via a bore 6b with the channel 7 of the shaft 5th connected is. The suction cups 6 rotate with the shaft 5 and are depending on the position of the rotary valve 1 with the Vacuum source 2 or via the ventilation opening 21 with the ambient air connected.

Die Figuren 1 und 2 zeigen eine Stellung des Drehschieberventils 1, bei welcher die Sauger 6 mit der Vakuumquelle 2 verbunden und damit aktiv sind. Der nierenförmige Durchbruch 20 des Gleitkörpers 12 befindet sich in einer Stellung, bei welcher er den Kanal 19 der Ventilplatte 10 mit dem Durchgang 23 der Steuerscheibe 22 verbindet. Die Linie 8 zeigt die Verbindung an, die von den Vakuumöffnungen 6 zur Vakuumquelle 2 führt. Gemäss der Figur 3 dreht bei der Saugtrommel C der Durchbruch 20 im Uhrzeigersinn. Die Öffnung 18 befindet sich am Anfang des nierenförmigen Durchbruches 20. Durch diese Stellung des Durchbruchs 20 zur Öffnung 18 ist der Anfangszeitpunkt des Saugwinkels bestimmt. Dreht nun der Gleitkörper 12 mit dem Durchbruch 20 weiter in Uhrzeigerrichtung, so bleiben die Sauger 6 weiterhin mit der Vakuumquelle 2 verbunden und damit aktiv. Dreht die Öffnungstrommel C weiter im Uhrzeigersinn, so gelangt schliesslich der Durchbruch 20 des Gleitkörpers 12 in die in Figur 7 gezeigte Position, in welcher die Ausnehmung 21 mit dem Durchgang 23 der Steuerscheibe 22 verbunden ist. In dieser Position des Gleitkörpers 12 ist gemäss Figur 8 der Kanal 7 mit der Umgebung verbunden.
In Figur 8 zeigt die Linie 30 den Weg, auf dem Umgebungsluft zu den Saugern 6 strömt. Die Sauger 6 werden somit belüftet und der Faltbogen 38 wird von den Öffnungstrommeln B und C freigegeben und auf die Sammelkette 29 abgeworfen.
Die Figur 6 zeigt diese Position der Sauger 6, die hier wie erwähnt belüftet und damit inaktiv sind. Wesentlich ist nun, dass diese Belüftungsposition durch die Drehposition der Steuerscheibe 22 und insbesondere des Durchgangs 23 bestimmt ist. Soll nun diese Belüftungsposition, und damit der Zeitpunkt, zu dem die Falzbogen 38 freigegeben werden, verstellt werden, so wird der Durchgang 23 durch Drehen der Steuerscheibe 22 in den Richtungen des Pfeils 24 verstellt.
Figures 1 and 2 show a position of the rotary slide valve 1, in which the suction cups 6 are connected to the vacuum source 2 and are thus active. The kidney-shaped opening 20 of the sliding body 12 is in a position in which it connects the channel 19 of the valve plate 10 with the passage 23 of the control disk 22. Line 8 shows the connection that leads from vacuum openings 6 to vacuum source 2. According to FIG. 3, the opening 20 in the suction drum C rotates clockwise. The opening 18 is located at the beginning of the kidney-shaped opening 20. This position of the opening 20 relative to the opening 18 determines the starting point of the suction angle. If the sliding body 12 rotates clockwise with the opening 20, the suction devices 6 remain connected to the vacuum source 2 and are thus active. If the opening drum C continues to rotate clockwise, the opening 20 of the sliding body 12 finally reaches the position shown in FIG. 7, in which the recess 21 is connected to the passage 23 of the control disk 22. In this position of the sliding body 12, the channel 7 is connected to the surroundings according to FIG.
In FIG. 8, line 30 shows the path on which ambient air flows to the suction devices 6. The suckers 6 are thus aerated and the folding sheet 38 is released from the opening drums B and C and dropped onto the collecting chain 29.
FIG. 6 shows this position of the suction cups 6, which, as mentioned, are ventilated and therefore inactive. It is now essential that this ventilation position is determined by the rotational position of the control disk 22 and in particular of the passage 23. If this ventilation position, and thus the time at which the folded sheets 38 are released, is to be adjusted, the passage 23 is adjusted by rotating the control disk 22 in the directions of the arrow 24.

Der Verstellbereich ist in der Figur 4 mit 31 angegeben. Wird in Figur 4 der Durchgang 23 im Gegenuhrzeigersinn verstellt, so werden die Sauger 6 früher belüftet und damit der Saugwinkel verkleinert. Beim Verschieben des Durchgangs 23 im Uhrzeigersinn wird im Gegensatz dazu später belüftet.The adjustment range is indicated by 31 in FIG. If the passage 23 is adjusted counterclockwise in FIG. 4, so the suction cups 6 are ventilated earlier and thus the Reduced suction angle. When moving the passage 23 in In contrast, clockwise ventilation is performed later.

Die Figur 6 zeigt deutlich die Überdeckung des Durchgangs 23 mit der Belüftungsausnehmung 21. Die Saugöffnungen 6a sind damit über den Durchgang 23 und die Belüftungsausnehmung 21 mit der Umgebungsatmosphäre verbunden. Der nierenförmige Durchbruch 20 befindet sich ausserhalb der Öffnung 18 und ist damit nicht mit der Vakuumquelle 2 verbunden.
Ein wesentlicher Vorteil des Drehschieberventils 1 wird darin gesehen, dass die Vakuumquelle 2 nicht ins Leere saugt, sondern gemäss Figur 8 durch die Überdeckung der Öffnung 18 durch den Gleitkörper 12 verschlossen ist. Die Belüftung der Sauger 6 erfolgt somit zu einem frei wählbaren Zeitpunkt, der von der Stellung der Steuerscheibe 22 relativ zum Gleitkörper 12 abhängig ist. Da wie erwähnt die Steuerscheibe 22 im Lauf verstellbar ist, kann das Abwurfverhalten resp. der Abwurfzeitpunkt der Bogen 38 auf die Sammelkette 29 optimiert und somit die Laufgeschwindigkeit erhöht werden. Dies ist grundsätzlich auch bei dem in den Figuren 9 bis 12 gezeigten Drehschieberventil 51 möglich, das nachfolgend näher erläutert wird.
FIG. 6 clearly shows the overlap of the passage 23 with the ventilation recess 21. The suction openings 6a are thus connected to the ambient atmosphere via the passage 23 and the ventilation recess 21. The kidney-shaped opening 20 is located outside the opening 18 and is therefore not connected to the vacuum source 2.
A significant advantage of the rotary slide valve 1 is seen in the fact that the vacuum source 2 does not suck into space, but is closed according to FIG. 8 by the overlap of the opening 18 by the sliding body 12. The suction cups 6 are thus ventilated at a freely selectable point in time which is dependent on the position of the control disk 22 relative to the sliding body 12. Since, as mentioned, the control disc 22 is adjustable in the barrel, the ejection behavior, respectively. the time at which the sheets 38 are dropped onto the collecting chain 29 is optimized and the running speed is thus increased. In principle, this is also possible with the rotary slide valve 51 shown in FIGS. 9 to 12, which is explained in more detail below.

Das Drehschieberventil 51 ist ebenfalls auf eine Hohlwelle 65 aufgesetzt, die einen Kanal 67 mit einer Öffnung 69 besitzt. Ein Gleitkörper 72 besitzt eine zentrale Sackbohrung 70, in welche die Hohlwelle 65 eingreift. Mit hier nicht gezeigten Mitteln, beispielsweise mittels Schraubverbindung, ist die Welle 65 drehfest mit dem Gleitkörper 72 verbunden. Der Kanal 67 ist dauernd und luftdicht mit einem sich radial erstrekkenden Durchbruch 68 verbunden, der auf einer ebenen Rückseite 78 in einer sich radial erstreckenden Öffnung 79 austritt, wie die Figur 12 deutlich zeigt. Der Gleitkörper 72 gleitet mit seiner ebenen Fläche 78 auf einer Ventilplatte 60, die vorzugsweise aus Kunststoff hergestellt und stehend an dem hier nicht gezeigten Maschinengestell befestigt ist. In die am Gleitkörper 72 anliegende Fläche 80 der Ventilplatte 60 ist eine Vertiefung 63 eingearbeitet, die gemäss Figur 9 etwa halbmondförmig ausgebildet ist und etwa die Hälfte einer mittig angeordneten Durchgangsbohrung 64 aufnimmt. Die Ventilplatte 60 ist vorzugsweise so am Maschinengestell befestigt, dass sie gelöst und gedreht werden kann.The rotary slide valve 51 is also on a hollow shaft 65 put on, which has a channel 67 with an opening 69. A sliding body 72 has a central blind bore 70, in which engages the hollow shaft 65. With not shown here Means, for example by means of a screw connection, is Shaft 65 rotatably connected to the sliding body 72. The channel 67 is permanent and airtight with a radially extending one Breakthrough 68 connected on a flat back 78 emerges in a radially extending opening 79, as Figure 12 clearly shows. The slider 72 slides with its flat surface 78 on a valve plate 60, the preferably made of plastic and standing on the Machine frame, not shown, is attached here. In the surface 80 of valve plate 60 abutting sliding body 72 a recess 63 is worked in, which according to FIG is crescent-shaped and about half one in the middle arranged through hole 64 receives. The valve plate 60 is preferably attached to the machine frame in such a way that it can be loosened and rotated.

In die Ausnehmung 63 und die Durchgangsbohrung 64 ist ein Schieber 52 eingesetzt, der einen zylindrischen Teil 53 aufweist, welcher gemäss der Figur 12 auf der Rückseite der Ventilplatte 60 vorsteht. Wie die Figur 12 zeigt, ragt ein Führungszapfen 81 des Gleitkörpers 72 in eine Bohrung 54 des Schiebers 52 hinein. Ein radial abstehender Arm 55 unterteilt die Ausnehmung 63 gemäss Figur 11 in zwei Kammern 73 und 74. Durch Drehen des Schiebers 52 am herausragenden Teil 53, kann der Arm 55 in Umfangsrichtung verstellt und damit die beiden Kammern 73 und 74 verkleinert bzw. vergrössert werden. Das Drehen des Schiebers 52 kann mit dem in Fig. 2 gezeigten Verstellmöglichkeit 40 erfolgen.In the recess 63 and the through hole 64 is a Slider 52 used, which has a cylindrical part 53, which according to Figure 12 on the back of the valve plate 60 stands out. As shown in FIG. 12, a guide pin protrudes 81 of the sliding body 72 in a bore 54 of the Slider 52 into it. A radially protruding arm 55 is divided the recess 63 according to FIG. 11 in two chambers 73 and 74. By rotating the slide 52 on the protruding part 53, the arm 55 is adjusted in the circumferential direction and thus the two Chambers 73 and 74 are reduced or enlarged. The Rotation of the slider 52 can with the adjustment shown in Fig. 2 40 done.

Die Ausnehmung 63 ist mit zwei sich radial erstreckenden Bohrungen 59 und 61 verbunden, die gemäss Figur 9 eine am Umfang austretende Öffnung 58 bzw. 71 aufweisen. Die Öffnung 71 ist über einen hier nicht gezeigten flexiblen Schlauch mit der Vakuumquelle 2 verbunden. Die andere Öffnung 58 ist offen zur Umgebungsatmosphäre. Die Kammer 73 ist somit unabhängig von der Position des Schiebers 52 mit der Umgebungsatmosphäre und die Kammer 74 mit der Vakuumquelle 2 verbunden. Die Wirkungsweise wird nachfolgend anhand der Figuren 10 bis 15 bezüglich der Öffnungstrommel B erläutert.The recess 63 has two radially extending bores 59 and 61 connected, one according to Figure 9 on the circumference have emerging opening 58 or 71. The opening 71 is via a flexible hose, not shown here, with the Vacuum source 2 connected. The other opening 58 is open to Ambient atmosphere. The chamber 73 is thus independent of the position of the slide 52 with the ambient atmosphere and chamber 74 is connected to vacuum source 2. The mode of action is below with reference to Figures 10 to 15 the opening drum B explained.

Die Öffnungstrommel B besitzt wenigstens einen Sauger 66 mit einer Saugöffnung 66a und rotiert in Richtung des Pfeils 82. Die Welle 65 sowie der Gleitkörper 72 drehen in gleicher Richtung. In der in Figur 10 gezeigten Position hat der Durchbruch 68 und die Öffnung 79 die Ausnehmung 63 und insbesondere die Kammer 74 erreicht. Der Durchbruch 68 verbindet damit den Kanal 67 der Hohlwelle 65 mit der Bohrung 61 und damit mit der Vakuumquelle 2, wie die Figur 12 anhand der Linie 76 deutlich zeigt. Die Saugöffnung 66a steht damit mit der Vakuumquelle 2 in Verbindung. Diese Verbindung wird aufrechterhalten, bis der Durchbruch 68 via Öffnung 79 die Kammer 73 erreicht und damit über die Bohrung 59 und die Öffnung 58 mit der Umgebungsatmosphäre verbunden ist. Der Sauger 66 wird damit belüftet. Wesentlich ist auch hier, dass beim Belüften die Vakuumquelle 2 nicht ins Leere saugt, da die Kammer 74 beim Belüften geschlossen ist. Die Öffnungstrommel C rotiert in entgegengesetzter Richtung, arbeitet aber sonst gleich wie die Öffnungstrommel B. Beide Trommeln B und C weisen ein eigenes Drehschieberventil 51 auf und können somit unabhängig voneinander eingestellt werden. Wesentlich ist auch hier, dass beim Verstellen des Schiebers 52 der Belüftungszeitpunkt, nicht aber der Saugzeitpunkt verstellt wird. Ein Verstellen des Saugzeitpunktes ist aber grundsätzlich möglich, indem die Ventilplatte 60 gedreht wird. Durch Drehen der Ventilplatte 60 in einer der Richtungen des Doppelpfeiles 62 wird die Saugkante 83 entsprechend im Uhrzeigersinn verdreht. Wird sie gemäss Figur 10 bei der Öffnungstrommel B im Uhrzeigersinn gedreht, so wird der Sauger 66 früher aktiviert, während im anderen Fall die Aktivierung später erfolgt. Gleichzeitig würde der Belüftungszeitpunkt verstellt, was aber durch Festhalten des Schiebers 52 verhindert werden kann. Die Verstellung des Schiebers 52 kann ebenfalls über Kegelräder 26 oder eine andere geeignete Verstellmöglichkeit erfolgen.The opening drum B has at least one sucker 66 a suction opening 66a and rotates in the direction of arrow 82. The shaft 65 and the sliding body 72 rotate in the same Direction. In the position shown in Figure 10, the Breakthrough 68 and the opening 79, the recess 63 and in particular reached chamber 74. The breakthrough 68 connects thus the channel 67 of the hollow shaft 65 with the bore 61 and thus with the vacuum source 2, as in FIG. 12 using the line 76 clearly shows. The suction opening 66a is thus available the vacuum source 2 in connection. This connection is maintained until breakthrough 68 via opening 79 the chamber 73 reached and thus through the bore 59 and the opening 58 is connected to the ambient atmosphere. The suction cup 66 is aerated with it. It is also important here that when ventilating the vacuum source 2 does not suck into space since the chamber 74 is closed during ventilation. The opening drum C rotates in the opposite direction, but works otherwise same as the opening drum B. Both drums B and C have its own rotary slide valve 51 and can thus can be set independently. Is essential also here that when the slide 52 is adjusted, the time of ventilation, but not the suction time is adjusted. Adjusting the time of suction is essential possible by rotating the valve plate 60. Go berserk the valve plate 60 in one of the directions of the double arrow 62, the suction edge 83 is rotated clockwise accordingly. If it is shown in Figure 10 in the opening drum B in Rotated clockwise, the suction device 66 is activated earlier, in the other case the activation takes place later. At the same time the ventilation time would be adjusted, but what can be prevented by holding the slide 52 can. The slide 52 can also be adjusted via Bevel gears 26 or another suitable adjustment respectively.

Die Figuren 13 bis 15 zeigen das Drehschieberventil 51 in der Belüftungsposition. Der Durchbruch 68 ist hier somit mit der Kammer 73 verbunden, die ihrerseits eine Verbindung zur Bohrung 59 besitzt. Der Verstellbereich des Schiebers 52 ist in Figur 14 durch den Doppelpfeil 75 angedeutet. Wird der Winkel gemäss Doppelpfeil 75 wie in Figur 14 verkleinert, so werden die Sauger 66 früher belüftet. Der Saugzeitpunkt wird hingegen nicht verändert. In der Figur 15 ist durch den Pfeil 77 der Weg angedeutet, durch welchen Umgebungsluft zu den Saugern 66 strömt.Figures 13 to 15 show the rotary slide valve 51 in the Ventilation position. The breakthrough 68 is thus here with the Chamber 73 connected, which in turn connects to the bore 59 owns. The adjustment range of the slide 52 is in Figure 14 indicated by the double arrow 75. Will the angle according to double arrow 75 as reduced in Figure 14, so the suction cups 66 are ventilated earlier. The suction time, however, is not changed. In FIG. 15, arrow 77 shows indicated the way through which ambient air to the suction cups 66 streams.

Claims (10)

  1. Rotary slide valve (1) on an opening drum (B, C) of a feeder for processing of folded sheets (38), with a standing valve plate (10) having a vacuum connection (11), a rotating sliding member (12) with a perforation (20) to which the vacuum connection (11) is connected in a first valve position with a suction opening (9) and with a second valve position in which the suction opening is connected to a ventilation opening (21) and both valve positions determine a suction angle, and with means (22) for adjusting the size of the suction angle, whereby the valve (1) is arranged coaxially on a hollow shaft (5) of the opening drum (B, C) and this opening drum has at least one suction unit (6) for opening the folded sheets (38), characterised in that the means for adjusting the suction angle has a control disk (22) which is rotatable during running of the opening drum (B, C) and has an opening (23) which connects a perforation (20) of the sliding member (12) to a channel (7) of the hollow shaft (5).
  2. Valve according to Claim 1, characterised in that the control disk (22) has a member (25) projecting coaxially with the hollow shaft (5, 65), on which the control disk (22) is rotatable.
  3. Valve according to one of the claims 1 or 2, characterised in that the opening (23) in the control disk (22) is designed as a radially extending slit.
  4. Valve according to one of the claims 1 to 3, characterised in that the sliding member (12) is arranged between the valve plate (10) and the control disk (22) and is sealed in sliding fashion relative to these.
  5. Valve according to Claim 4, characterised in that the sliding member (12) has a kidney-shaped opening (20) extending in the circumferential direction.
  6. Valve according to Claim 5, characterised in that the sliding member (12) has a recess (21) for ventilating the suction unit (6, 66), said recess1 being connected in a predetermined rotary position with the opening (23) in the control disk (22).
  7. Rotary slide valve (51) on an opening drum (B, C) of a feeder for processing of folded sheets (38), with a standing valve plate (60) having a vacuum connection (71), a rotating sliding member (72) with a perforation (68) to which the vacuum connection (71) is connected in a first valve position with a suction opening (69) and with a second valve position in which the suction opening is connected to a ventilation opening (59) and both valve positions determine a suction angle, and with means (52) for adjusting the size of the suction angle, whereby the valve (51)2 is arranged coaxially on a hollow shaft (65) of the opening drum (B, C) and this opening drum has at least one suction unit (66) for opening the folded sheets (38), characterised in that the means for adjusting the suction angle has an adjustable slider (52) mounted in a recess (63) in the valve plate (60), which is rotatable during running of the opening drum (B, C).
  8. Valve according to Claim 7, characterised in that the slider (52) subdivides said recess (63) into two chambers (73, 74), whereby the one chamber (74) is connected to the suction opening (71) and the other chamber (73) is connected to a ventilation opening (58).
  9. Valve according to Claim 7 or 8, characterised in that the adjustable slider (52) has an arm (55) extending radially and a coaxial member (53) on which it is rotatable during running.
  10. Valve according to one of the claims 7 to 9, characterised in that the sliding member (72) has an opening (68) extending radially, which in the centre of the sliding member (72) adjoins a channel (67) in a shaft (65) and which may be connected to said recess (63) in the valve plate (60).
EP98811214A 1998-12-09 1998-12-09 Rotary slide valve Expired - Lifetime EP1008541B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59808084T DE59808084D1 (en) 1998-12-09 1998-12-09 Rotary valve
EP98811214A EP1008541B1 (en) 1998-12-09 1998-12-09 Rotary slide valve
US09/451,137 US6357479B1 (en) 1998-12-09 1999-11-30 Rotary disc valve
JP11347729A JP2000170928A (en) 1998-12-09 1999-12-07 Rotary sliding valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98811214A EP1008541B1 (en) 1998-12-09 1998-12-09 Rotary slide valve

Publications (2)

Publication Number Publication Date
EP1008541A1 EP1008541A1 (en) 2000-06-14
EP1008541B1 true EP1008541B1 (en) 2003-04-23

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Family Applications (1)

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EP98811214A Expired - Lifetime EP1008541B1 (en) 1998-12-09 1998-12-09 Rotary slide valve

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US (1) US6357479B1 (en)
EP (1) EP1008541B1 (en)
JP (1) JP2000170928A (en)
DE (1) DE59808084D1 (en)

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JP2000170928A (en) 2000-06-23
DE59808084D1 (en) 2003-05-28
US6357479B1 (en) 2002-03-19
EP1008541A1 (en) 2000-06-14

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