EP0386531A2 - Folder - Google Patents

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Publication number
EP0386531A2
EP0386531A2 EP90103371A EP90103371A EP0386531A2 EP 0386531 A2 EP0386531 A2 EP 0386531A2 EP 90103371 A EP90103371 A EP 90103371A EP 90103371 A EP90103371 A EP 90103371A EP 0386531 A2 EP0386531 A2 EP 0386531A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
folding
radial direction
strips
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90103371A
Other languages
German (de)
French (fr)
Other versions
EP0386531B1 (en
EP0386531A3 (en
Inventor
Emil Fischer
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.)
Albert Frankenthal AG
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Albert Frankenthal AG
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Filing date
Publication date
Application filed by Albert Frankenthal AG filed Critical Albert Frankenthal AG
Publication of EP0386531A2 publication Critical patent/EP0386531A2/en
Publication of EP0386531A3 publication Critical patent/EP0386531A3/en
Application granted granted Critical
Publication of EP0386531B1 publication Critical patent/EP0386531B1/en
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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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/16—Rotary folders
    • B65H45/162—Rotary folders with folding jaw cylinders
    • B65H45/166—Rotary folders with folding jaw cylinders having an adjustable circumference
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting
    • B41F13/62—Folding-cylinders or drums

Definitions

  • the invention relates to a folding apparatus with at least two folding cylinders provided with interacting folding tools in the form of folding knives or folding flaps.
  • the folding cylinders are placed against one another while maintaining a fixed gap through which the products to be manufactured must pass.
  • the clear width of the gap is adapted to the product thickness and usually in such a way that there is a slight undersize compared to the product thickness, which is compensated for by the elasticity of an elastic cylinder support. This only leads to a certain product thickness satisfactory results.
  • With a smaller product thickness there is no reliable contact on the cylinder surface.
  • the greater product thickness results in a large bulge due to strong pressure in the area of the elastic support, which can lead to a displacement of the products.
  • very great difficulties can arise here.
  • At least one folding cylinder has circumferential sections which are adjustable in the radial direction at least in some areas.
  • the measures according to the invention therefore enable the production of products with very different thicknesses and nevertheless guarantee the same production accuracy and product protection in every case.
  • the measures according to the invention thus enable a not inconsiderable broadening of the area of use of a generic folding apparatus and thus result in an overall increase in economy.
  • the folding cylinder provided with folding jaws can expediently have circumferential sections which are adjustable in the radial direction, since the length of the products resting on the folding jaw cylinder is shortened to half the length of the section as a result of the folding process. It is therefore sufficient if the peripheral area between the successive folding members is divided into two sections, of which only the section following the adjacent folding member is adjustable in the radial direction and the other is fixed.
  • a further expedient measure can consist in the fact that the sections which can be adjusted in the radial direction have a spacing which is arranged next to one another and can be exhibited jointly in the radial direction and which are preferably provided with an elastic covering. This simplifies the structural design, since the strips can simply be arranged to be retractable and extendable. For this purpose, these can expediently be pivoted about a pivot axis parallel to the cylinder axis and provided in the area of the leading strip end.
  • the strips can be slidably and tiltably received on a respective cylinder-fixed pin which is encompassed by a return spring and rest on the one hand on a cylinder-side support surface and on the other hand on an adjusting device provided on the cylinder.
  • the actuating device can simply have an eccentric shaft which extends parallel to the cylinder parallel to the associated strips and which can be rotated by means of a rotating device and can be fixed by means of a clamping device, which ensures a simple and clear structure and a high level of user friendliness.
  • all the eccentric shafts provided on a cylinder can be provided with side drive wheels, the drive wheels provided in the area of a cylinder end face being able to engage a common adjusting ring which is coaxial with the cylinder axis, which advantageously enables all eccentric shafts to be adjusted jointly .
  • the structure and mode of operation of folders are known per se.
  • the centerpiece of a folder is a transverse folder of the type on which the figure is based.
  • This comprises a folder knife cylinder 2 provided with folder blades 1 and a folder cylinder 4 cooperating with folder blades 1.
  • the two cylinders 2, 4 are driven in such a way that they meet at the same speed
  • a gap s is provided between the two cylinders 2, 4, the inside width of which corresponds to the thickness of the unfolded product P or has a slight undersize, so that the product P passing through the gap s is reliably pressed against the surface of the folding knife cylinder 2.
  • the clear width of the gap s can be adjusted.
  • the circumferential areas between the successive folding flaps 3 are each divided into two sections 5, 6, of which the leading in the direction of rotation Section 5, that is, the section 5 adjacent to the folding flap 3 advancing in the direction of rotation can be adjusted at least with its rear end in the radial direction. This results in a change in the diameter of the folding jaw cylinder in the region of the peripheral sections 5, which prevents the gap s from being too large or too small.
  • the adjustable circumferential sections 5 are formed by curved strips 7, which are uniformly distributed over the cylinder width and are arranged next to one another at a distance, which are provided with an elastic covering 8 and which can be opened together in the radial direction.
  • strips 9, such as their covering 8, which are made of elastic material can be provided in the extension of the strips 7.
  • the spaced-apart strips 7 are received in assigned circumferential slots 10 and can be extended or retracted from these. In the retracted state, the circumferential contour indicated in FIG. 2 results with dashed lines, which merges practically steplessly into the circumferential contour of the strips 9 which are fixedly arranged on the cylinder circumference.
  • the strips 7 are pivoted out radially with their rear end in the direction of rotation, so that there is a step with respect to the adjacent, fixed strips 9.
  • the resulting increase in diameter of the jaw cylinder 4 enables reliable pressing against the surface of the folder cylinder 2 even in the manufacture of very thin products.
  • the strips 7 are swung out so far that the minimum gap width of the gap s when the rear ends of the strips 7 pass the adjacent folding blade cylinder 2 has an undersize of 0.5 mm compared to the product thickness, which is absorbed by deformation of the elastic strips 8.
  • the strips 7, as can be seen in FIG. 2, are adjustable in the radial direction and can be tilted on a respectively assigned radial pin 11 arranged in a cylinder-fixed manner.
  • the strips 7 are provided with a bracket 12 which is penetrated by the respectively assigned radial pin 11 and which is gripped behind by a chamber-shaped recess 13 into which the end of the respectively assigned radial pin 11 which carries a head 14 projects.
  • the yoke 12 is provided with a bore 5 which is penetrated by the shaft of the associated radial pin 11 and which is oversized with respect to the shaft diameter, so that the respective strip 7 can tilt.
  • the end of the radial pin 11 protruding into the recess 13 is encompassed by a plate spring assembly 16 which bears on the one hand on the head 14 and on the other hand on the yoke 12 which engages under the head 14.
  • the strips 7 are each provided with a support foot 17 or 18.
  • the front support leg 17 stands on a cylinder-side support surface 19.
  • the rear support foot 18 bears against an eccentric shaft 20 which is parallel to the cylinder axis and which can be rotated in order to pivot out the strips 7 each forming an adjustable peripheral section 5.
  • the plate spring 16 is compressed. This works demented speaking as a return spring.
  • the eccentric shaft 20 which is parallel to the cylinder, passes through the entire cylinder width in the case of single-width cylinders, so that all strips 7 of an adjustable peripheral section 5, which are uniformly distributed over the cylinder width, can be adjusted together.
  • the eccentric shaft 20, as can best be seen in FIG. 3, is received with eccentric collars 21 on roller bearings 22 which are mounted in an associated cylinder bore 23 close to the circumference.
  • the eccentric shaft 20 is provided with a protruding square 24 in the region of a cylinder end face, to which a rotary key can be attached.
  • the square 24 protrudes over a collar 25 serving as an axial bearing, which rests against the cylinder end face and which can be clamped by means of a clamping claw 26 to secure the set position.
  • the collar 25 is designed as a scale carrier provided with a scale 27, which can cooperate with a marking provided on the cylinder side, for example in the form of a notch.
  • the folding jaw cylinder 4 is provided with a plurality of folding jaws 3 on the circumference and accordingly with a plurality of adjustable circumferential sections 5, an actuating device assigned to all eccentric shafts can be provided to simplify the operation.
  • the eccentric shafts 20, as can best be seen from FIG. 4 can each be provided with a lateral drive wheel 28, wherein all drive wheels 28 are in engagement with a common adjusting ring 29 arranged coaxially to the cylinder axis.
  • this is provided with peripheral toothed strips 30, in each of which an associated drive wheel 28 engages.
  • the toothed strips 30 are offset from one another by circumferential recesses 31, into which cassettes provided on the cylinder side engage to accommodate the folding jaws 3.
  • the adjusting ring 29 arranged in the area of a cylinder end face is received on pins 32 on the cylinder side which engage in assigned arc slots 33. At least one of the pins 32 is designed as a clamping screw 32a, by means of which the adjusting ring 29 can be locked.
  • the adjusting ring 29 can be turned by hand.
  • the adjusting ring 29 is provided with a toothing 34 provided in the region of its inner circumference, into which engages an adjusting wheel 35 which is mounted in the region of the cylinder end face and which can be provided with a hexagon 36 for attaching a rotary key.
  • FIG. 5 This is a double-width jaw cylinder with two cylinder sections 38a, b which can be operated next to one another on a common axis 37 and can be operated independently of one another.
  • the strips 7 provided in the region of the two cylinder sections 38a, 38b, which can be retracted and extended in the radial direction, with elastic covering 8 can be operated independently of the strips of the adjacent cylinder section.
  • the basic structure corresponds to the structure shown in FIG. 2, the eccentric shaft 20 not passing over the entire cylinder width, but only extending over the associated cylinder section 38a, b.
  • the eccentric shafts 20 of the two cylinder sections 38a, b are provided with drive means in the region of the cylinder faces facing away from one another. These correspond to the embodiment according to FIG. 4, with the difference that the adjusting wheel 35 meshing with the adjusting ring 29 is driven by a respectively assigned drive motor 39, which is arranged here inside the cylinder or the respective cylinder section and attached to the relevant end wall from the inside is.
  • peripheral portions 6 can tip out in the radial direction only with their rear end in the direction of rotation ensures that only the rear end of the products p, after being provided at the inlet to the gap between the cylinders 2, 4, in FIG 40 indicated guide means, such as brushes, tapes, etc. is no longer guided, pressed against the cylinders 2 and can thus be guided.
  • guide means such as brushes, tapes, etc.
  • the limitation of the contact pressure to the rear end of the product ensures that the flexing work to be taken up by the sections 6 remains limited and that the products are not damaged, such as a marking, etc.

Abstract

In a folder having at least two folding cylinders (2, 4) provided with interacting folding elements in the form of folding blades (1) and folding jaws (3), in which it is intended to manufacture products of very different thickness, a reliable mode of production can be achieved if at least one folding cylinder (2 or 4) has circumferential sections (5) which are adjustable radially. <IMAGE>

Description

Die Erfindung betrifft einen Falzapparat mit wenigstens zwei mit zusammenwirkenden Falzwerkzeugen in Form von Falzmessern bzw. Falzklappen versehenen Falzzylindern.The invention relates to a folding apparatus with at least two folding cylinders provided with interacting folding tools in the form of folding knives or folding flaps.

Bei den bekannten Anordnungen dieser Art sind die Falz­zylinder unter Einhaltung eines feststehenden Spalts, durch den die herzustellenden Produkte hindurchgehen müssen, aneinander angestellt. Die lichte Weite des Spalts ist dabei der Produktdicke angepaßt und zwar nor­malerweise derart, daß sich gegenüber der Produktdicke ein leichtes Untermaß ergibt, das durch die Elastizität einer elastischen Zylinderauflage ausgeglichen wird. Dies führt nur bei einer bestimmten Produktdicke zu zu­ friedenstellenden Ergebnissen. Bei demgegenüber kleine­rer Produktdicke ergibt sich keine zuverlässige Anlage an der Zylinderoberfläche. Bei demgegenüber größerer Produktdicke ergibt sich infolge starker Pressung im Bereich der elastischen Auflage ein großer Wulst, der zu einer Verschiebung der Produkte führen kann. Insbesonde­re bei doppelt breiten Apparaten mit zwei nebeneinander liegen Produktionslinien für unterschiedlich dicke Pro­dukte können sich hier sehr große Schwierigkeiten auftun.In the known arrangements of this type, the folding cylinders are placed against one another while maintaining a fixed gap through which the products to be manufactured must pass. The clear width of the gap is adapted to the product thickness and usually in such a way that there is a slight undersize compared to the product thickness, which is compensated for by the elasticity of an elastic cylinder support. This only leads to a certain product thickness satisfactory results. In contrast, with a smaller product thickness, there is no reliable contact on the cylinder surface. In contrast, the greater product thickness results in a large bulge due to strong pressure in the area of the elastic support, which can lead to a displacement of the products. Particularly in the case of double-width devices with two adjacent production lines for products of different thicknesses, very great difficulties can arise here.

Hiervon ausgehend ist es daher die Aufgabe der vorlie­genden Erfindung einen Falzapparat eingangs erwähnter Art so zu verbessern, daß die wirksame Spaltweite an die unterschiedliche Dicke verschiedener Produkte angepaßt werden kann.Proceeding from this, it is therefore the object of the present invention to improve a folder of the type mentioned at the outset in such a way that the effective gap width can be adapted to the different thickness of different products.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß wenigstens ein Falzzylinder Umfangsabschnitte aufweist, die zumindest bereichsweise in radialer Richtung verstellbar sind.This object is achieved in that at least one folding cylinder has circumferential sections which are adjustable in the radial direction at least in some areas.

Mit diesen Maßnahmen lassen sich die eingangs geschil­derten Nachteile vollständig beseitigen. Die erfindungs­gemäßen Maßnahmen ermöglichen daher die Herstellung von Produkten mit sehr unterschiedlicher Dicke und gewähr­leisten dennoch in jedem Falle dieselbe Produktionsge­nauigkeit und Produktschonung. Die erfindungsgemäßen Maßnahmen ermöglichen somit eine nicht unbeträchtliche Verbreiterung des Einsatzgebiets eines gattungsgemäßen Falzapparats und ergeben somit insgesamt eine Steigerung der Wirtschaftlichkeit.With these measures, the disadvantages described above can be completely eliminated. The measures according to the invention therefore enable the production of products with very different thicknesses and nevertheless guarantee the same production accuracy and product protection in every case. The measures according to the invention thus enable a not inconsiderable broadening of the area of use of a generic folding apparatus and thus result in an overall increase in economy.

Zweckmäßig kann der mit Falzklappen versehene Falzzylin­der in radialer Richtung verstellbare Umfangsabschnitte aufweisen, da sich die Länge der auf dem Falzklappen­zylinder aufliegenden Produkte infolge des Falzvorgangs auf die halbe Abschnittlänge verkürzt. Es genügt daher, wenn der Umfangsbereich zwischen den aufeinanderfolgen­den Falzorganen in zwei Abschnitte unterteilt ist, von denen lediglich der dem benachbarten Falzorgan nachlau­fende Abschnitt in radialer Richtung verstellbar und der andere fest angeordnet ist.The folding cylinder provided with folding jaws can expediently have circumferential sections which are adjustable in the radial direction, since the length of the products resting on the folding jaw cylinder is shortened to half the length of the section as a result of the folding process. It is therefore sufficient if the peripheral area between the successive folding members is divided into two sections, of which only the section following the adjacent folding member is adjustable in the radial direction and the other is fixed.

Eine weitere zweckmäßige Maßnahme kann darin bestehen, daß die in radialer Richtung verstellbaren Abschnitte mit Abstand nebeneinander angeordnete, gemeinsam in radialer Richtung ausstellbare Leistung aufweisen, die vorzugsweise mit einem elastischen Belag versehen sind. Dies vereinfacht die bauliche Ausführung, da einfach die Leisten ein- und ausfahrbar angeordnet werden können. Hierzu können diese zweckmäßig um eine zylinderachspa­rallele, im Bereich des vorlaufenden Leistenendes vor­gesehene Schwenkachse schwenkbar angeordnet sein.A further expedient measure can consist in the fact that the sections which can be adjusted in the radial direction have a spacing which is arranged next to one another and can be exhibited jointly in the radial direction and which are preferably provided with an elastic covering. This simplifies the structural design, since the strips can simply be arranged to be retractable and extendable. For this purpose, these can expediently be pivoted about a pivot axis parallel to the cylinder axis and provided in the area of the leading strip end.

Vorteilhaft können die Leisten auf einem jeweils zuge­ordneten, von einer Rückstellfeder umfaßten, zylinder­festen Stift in radialer Richtung verschiebbar und kipp­bar aufgenommen sein und einerseits an einer zylinder­seitigen Stützfläche und andererseits an einer auf den Zylinder vorgesehenen Stelleinrichtung anliegen. Diese Maßnahmen ergeben einen besonders einfachen und robusten Aufbau und gewährleisten gleichzeitig eine einfache Be­dienbarkeit.Advantageously, the strips can be slidably and tiltably received on a respective cylinder-fixed pin which is encompassed by a return spring and rest on the one hand on a cylinder-side support surface and on the other hand on an adjusting device provided on the cylinder. These measures result in a particularly simple and robust construction and, at the same time, ensure simple operability.

Die Stelleinrichtung kann einfach eine zylinderachs­parallel über die zugeordneten Leisten sich erstreckende Exzenterwelle aufweisen, die mittels einer Dreheinrich­tung verdrehbar und mittels einer Klemmeinrichtung fest­stellbar ist, was einen einfachen und übersichtlichen Aufbau sowie eine hohe Bedienungsfreundlichkeit gewähr­leistet.The actuating device can simply have an eccentric shaft which extends parallel to the cylinder parallel to the associated strips and which can be rotated by means of a rotating device and can be fixed by means of a clamping device, which ensures a simple and clear structure and a high level of user friendliness.

In weiterer Fortbildung der übergeordneten Maßnahmen können sämtliche auf einem Zylinder vorgesehene Exzenter­wellen mit seitlichen Antriebsrädern versehen sein, wo­bei die im Bereich einer Zylinderstirnseite vorgesehenen Antriebsräder mit einem gemeinsamen, zur Zylinderachse koaxialen Stellring im Eingriff sein können, was in vor­teilhafter Weise eine gemeinsame Verstellbarkeit sämtli­cher Exzenterwellen ermöglicht.In a further development of the superordinate measures, all the eccentric shafts provided on a cylinder can be provided with side drive wheels, the drive wheels provided in the area of a cylinder end face being able to engage a common adjusting ring which is coaxial with the cylinder axis, which advantageously enables all eccentric shafts to be adjusted jointly .

Weitere vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen ergeben sich aus den restlichen Unteransprüchen.Further advantageous refinements and expedient further training of the superordinate measures result from the remaining subclaims.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert. In der Zeichnung zeigen:

  • Figur 1 eine Teilseitenansicht eines aus Falz­messerzylinder und Falzklappenzylinder bestehenden Querfalzwerks,
  • Figur 2 eine Teilstirnansicht des Falzklappen­zylinders teilweise im Schnitt,
  • Figur 3 einen Teillängsschnitt durch den Falz­klappenzylinder der Figur 2,
  • Figur 4 eine Stirnansicht eines mit einem Stell­ring versehenen Falzklappenzylinders und
  • Figur 5 einen Längsschnitt durch einen doppelt breiten, erfindungsgemäßen Falzklappen-­Zylinder.
An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. The drawing shows:
  • FIG. 1 shows a partial side view of a transverse folding unit consisting of a folding knife cylinder and folding jaw cylinder,
  • FIG. 2 shows a partial end view of the folding jaw cylinder, partly in section,
  • FIG. 3 shows a partial longitudinal section through the folding jaw cylinder of FIG. 2,
  • Figure 4 is an end view of a jaw cylinder provided with an adjusting ring
  • Figure 5 shows a longitudinal section through a double-width, jaw cylinder according to the invention.

Der Aufbau und die Wirkungsweise von Falzapparaten sind an sich bekannt. Kernstück eines Falzapparats ist ein Querfalzwerk der der Figur zugrundeliegenden Art. Die­ses umfaßt einen mit Falzmessern 1 versehenen Falzmesser­zylinder 2 und einen mit den Falzmessern 1 zusammenwir­kenden Falzklappen 3 versehenen Falzklappenzylinder 4. Die beiden Zylinder 2, 4 werden so angetrieben, daß sie mit gleicher Geschwindigkeit aufeinander abrollen.Zwi­schen den beiden Zylindern 2, 4 ist ein Spalt s vorge­sehen, dessen lichte Weite der Dicke des ungefalzten Produkte P entspricht oder demgegenüber leichtes Unter­maß besitzt, so daß das den Spalt s durchlaufende Pro­dukte P zuverlässig an die Oberfläche des Falzmesser­zylinders 2 angedrückt wird.The structure and mode of operation of folders are known per se. The centerpiece of a folder is a transverse folder of the type on which the figure is based. This comprises a folder knife cylinder 2 provided with folder blades 1 and a folder cylinder 4 cooperating with folder blades 1. The two cylinders 2, 4 are driven in such a way that they meet at the same speed A gap s is provided between the two cylinders 2, 4, the inside width of which corresponds to the thickness of the unfolded product P or has a slight undersize, so that the product P passing through the gap s is reliably pressed against the surface of the folding knife cylinder 2.

Um Produkte unterschiedlicher Dicke verarbeiten zu kön­nen, ist die lichte Weite des Spalts s einstellbar. Hier­zu sind die Umfangsbereiche zwischen den aufeinander­folgenden Falzklappen 3 jeweils in zwei Abschnitte 5, 6 unterteilt, von denen der in Drehrichtung vorlaufende Ab­ schnitt 5, das heißt der der in Drehrichtung vorlaufen­den Falzklappe 3 benachbarte Abschnitt 5 zumindest mit seinem hinteren Ende in radialer Richtung verstellbar ist. Hierdurch ergibt sich eine Durchmesserveränderung des Falzklappenzylinders im Bereich der Umfangsabschnit­te 5, die verhindert, daß der Spalt s zu groß oder zu klein ist.In order to be able to process products of different thicknesses, the clear width of the gap s can be adjusted. For this purpose, the circumferential areas between the successive folding flaps 3 are each divided into two sections 5, 6, of which the leading in the direction of rotation Section 5, that is, the section 5 adjacent to the folding flap 3 advancing in the direction of rotation can be adjusted at least with its rear end in the radial direction. This results in a change in the diameter of the folding jaw cylinder in the region of the peripheral sections 5, which prevents the gap s from being too large or too small.

Die verstellbaren Umfangsabschnitte 5 werden, wie aus den Figuren 2 und 3 erkennbar ist, durch gleichmäßig über die Zylinderbreite verteilte, mit Abstand nebenein­ander angeordnete, gebogene Leisten 7 gebildet, die mit einem elastischen Belag 8 versehen sind und die gemein­sam in radialer Richtung ausstellbar sind. Im Bereich der stationären Umfangsabschnitte 6 können in Verlänge­rung der Leisten 7 vorgesehene, wie deren Belag 8 aus elastischem Material bestehende Streifen 9 vorgesehen sein. Die voneinander beabstandeten Leisten 7 sind in zugeordneten Umfangsschlitzen 10 aufgenommen und aus diesen ausfahrbar bzw. in diese einfahrbar. Im einge­fahrenen Zustand ergibt sich die in Figur 2 mit ge­strichelten Linien angedeutete Umfangskontur, die prak­tisch stufenlos in die Umfangskontur der fix auf den Zylinderumfang angeordneten Streifen 9 übergeht. In der in Figur 2 mit durchgezogenen Linien angedeuteten, aus­gefahrenen Stellung sind die Leisten 7 mit ihrem in Drehrichtung hinteren Ende radial ausgeschwenkt, so daß sich gegenüber den benachbarten, fixen Streifen 9 eine Stufe ergibt. Die so bewirkte Durchmesservergrößerung des Falzklappenzylinders 4 ermöglicht auch bei der Her­stellung sehr dünner Produkte eine zuverlässige An­pressung an die Oberfläche des Falzmesserzylinders 2.As can be seen from FIGS. 2 and 3, the adjustable circumferential sections 5 are formed by curved strips 7, which are uniformly distributed over the cylinder width and are arranged next to one another at a distance, which are provided with an elastic covering 8 and which can be opened together in the radial direction. In the area of the stationary circumferential sections 6, strips 9, such as their covering 8, which are made of elastic material, can be provided in the extension of the strips 7. The spaced-apart strips 7 are received in assigned circumferential slots 10 and can be extended or retracted from these. In the retracted state, the circumferential contour indicated in FIG. 2 results with dashed lines, which merges practically steplessly into the circumferential contour of the strips 9 which are fixedly arranged on the cylinder circumference. In the extended position indicated by solid lines in FIG. 2, the strips 7 are pivoted out radially with their rear end in the direction of rotation, so that there is a step with respect to the adjacent, fixed strips 9. The resulting increase in diameter of the jaw cylinder 4 enables reliable pressing against the surface of the folder cylinder 2 even in the manufacture of very thin products.

Üblicherweise werden die Leisten 7 so weit ausgeschwenkt, daß die minimale Spaltweite des Spalts s beim Vorbeigang der hinteren Enden der Leisten 7 am benachbarten Falz­messerzylinder 2 gegenüber der Produktdicke ein Unter­maß von 0,5 mm aufweist, das durch Verformung der elasti­schen Streifen 8 aufgenommen wird.Usually, the strips 7 are swung out so far that the minimum gap width of the gap s when the rear ends of the strips 7 pass the adjacent folding blade cylinder 2 has an undersize of 0.5 mm compared to the product thickness, which is absorbed by deformation of the elastic strips 8.

Die Leisten 7 sind, wie Figur 2 weiter erkennen läßt, in radiaier Richtung verstellbar und kippbar auf einem jeweils zugeordneten, zylinderfest angeordneten Radial­stift 11 aufgenommen. Hierzu sind die Leisten 7 mit einem vom jeweils zugeordneten Radialstift 11 durch­griffenen Bock 12 versehen, der von einer kammerförmigen Ausnehmung 13 hintergriffen ist, in die das einen Kopf 14 tragende Ende des jeweils zugeordneten Radialstifts 11 hineinragt. Das Joch 12 ist mit einer vom Schaft des zugeordneten Radialstifts 11 durchgriffenen Bohrung 5 versehen, die gegenüber dem Schaftdurchmesser Übermaß besitzt, so daß die jeweilige Leiste 7 kippen kann. Das in die Ausnehmung 13 hineinragende Ende des Radialstifts 11 ist von einem Tellerfederpaket 16 umfaßt, das einerseits am Kopf 14 und andererseits an dem den Kopf l4 unter­greifenden Joch 12 anliegt. Im Bereich ihres vorderen und hinteren Endes sind die Leisten 7 mit jeweils einem Stützfuß 17 bzw. 18 versehen. Der vordere Stützfuß 17 steht auf einer zylinderseitigen Stützfläche 19 auf. Der hintere Stützfuß 18 liegt an einer zylinderachsparallelen Exzenterwelle 20 an, die zum Ausschwenken der jeweils einen verstellbaren Umfangsabschnitt 5 bildenden Leisten 7 verdrehbar ist. Beim Ausschwenken der Leisten 7 wird die Tellerfeder 16 zusammengepreßt. Diese wirkt dement­ sprechend als Rückstellfeder.The strips 7, as can be seen in FIG. 2, are adjustable in the radial direction and can be tilted on a respectively assigned radial pin 11 arranged in a cylinder-fixed manner. For this purpose, the strips 7 are provided with a bracket 12 which is penetrated by the respectively assigned radial pin 11 and which is gripped behind by a chamber-shaped recess 13 into which the end of the respectively assigned radial pin 11 which carries a head 14 projects. The yoke 12 is provided with a bore 5 which is penetrated by the shaft of the associated radial pin 11 and which is oversized with respect to the shaft diameter, so that the respective strip 7 can tilt. The end of the radial pin 11 protruding into the recess 13 is encompassed by a plate spring assembly 16 which bears on the one hand on the head 14 and on the other hand on the yoke 12 which engages under the head 14. In the area of their front and rear ends, the strips 7 are each provided with a support foot 17 or 18. The front support leg 17 stands on a cylinder-side support surface 19. The rear support foot 18 bears against an eccentric shaft 20 which is parallel to the cylinder axis and which can be rotated in order to pivot out the strips 7 each forming an adjustable peripheral section 5. When pivoting the strips 7, the plate spring 16 is compressed. This works demented speaking as a return spring.

Die zylinderachsparallele Exzenterwelle 20 geht bei ein­fachbreiten Zylindern über die ganze Zylinderbreite durch, so daß sämtliche, gleichmäßig über die Zylinder­breite verteilte Leisten 7 eines verstellbaren Umfangs­abschnitts 5 gemeinsam verstellbar sind. Die Exzenter­welle 20 ist, wie am besten aus Figur 3 erkennbar ist, mit exzentrischen Bunden 21 auf Wälzlagern 22 aufge­nommen, die in einer zugeordneten, umfangsnahen Zylinder­bohrung 23 gelagert sind. Im dargestellten Ausfuhrungs­beispiel ist die Exzenterwelle 20 im Bereich einer Zylinderstirnseite mit einem vorstehenden Vierkant 24 versehen, an welchem ein Drehschlüssel ansetzbar ist. Der Vierkant 24 überragt einen als Axiallager dienen­den Bund 25, der an der Zylinderstirnseite anliegt und der zur Sicherung der eingestellten Stellung mittels einer Klemmpratze 26 festklemmbar ist. Zur Erleichterung der Einstellung ist der Bund 25 als mit einer Skala 27 versehener Skalenträger ausgebildet, der mit einer zylinderseitig vorgesehenen Markierung, beispielsweise in Form einer Kerbe, zusammenwirken kann.The eccentric shaft 20, which is parallel to the cylinder, passes through the entire cylinder width in the case of single-width cylinders, so that all strips 7 of an adjustable peripheral section 5, which are uniformly distributed over the cylinder width, can be adjusted together. The eccentric shaft 20, as can best be seen in FIG. 3, is received with eccentric collars 21 on roller bearings 22 which are mounted in an associated cylinder bore 23 close to the circumference. In the exemplary embodiment shown, the eccentric shaft 20 is provided with a protruding square 24 in the region of a cylinder end face, to which a rotary key can be attached. The square 24 protrudes over a collar 25 serving as an axial bearing, which rests against the cylinder end face and which can be clamped by means of a clamping claw 26 to secure the set position. To facilitate the adjustment, the collar 25 is designed as a scale carrier provided with a scale 27, which can cooperate with a marking provided on the cylinder side, for example in the form of a notch.

Sofern der Falzklappenzylinder 4 mit mehreren Falzklap­pen 3 am Umfang und dementsprechend mit mehreren ver­stellbaren Umfangsabschnitten 5 versehen ist, kann zur Vereinfachung der Bedienung eine sämtlichen Exzenter­wellen zugeordnete Betätigungseinrichtung vorgesehen sein. In einem derartigen Fall können die Exzenterwel­len 20, wie am besten aus Figur 4 erkennbar ist, mit jeweils einem seitlichen Antriebsrad 28 versehen sein, wobei sämtliche Antriebsräder 28 im Eingriff mit einem gemeinsamen, koaxial zur Zylinderachse angeordneten Stellring 29 sind. Dieser ist im dargestellten Ausfüh­rungsbeispiel mit umfangsseitigen Zahnleisten 30 ver­sehen, in die jeweils ein zugeordnetes Anstriebsrad 28 eingreift. Die Zahnleisten 30 sind durch umfangsseitige Ausnehmungen 31 voneinander abgesetzt, in welche zylin­derseitig vorgesehene Kassetten zur Aufnahme der Falz­klappen 3 eingreifen. Der im Bereich einer Zylinderstirn­seite angeordnete Stellring 29 ist auf zylinderseitigen Stiften 32 aufgenommen, die in zugeordnete Bogenschlitze 33 eingreifen. Zumindest einer der Stifte 32 ist als Klemmschraube 32a ausgebildet, durch die der Stellring 29 feststellbar ist.If the folding jaw cylinder 4 is provided with a plurality of folding jaws 3 on the circumference and accordingly with a plurality of adjustable circumferential sections 5, an actuating device assigned to all eccentric shafts can be provided to simplify the operation. In such a case, the eccentric shafts 20, as can best be seen from FIG. 4, can each be provided with a lateral drive wheel 28, wherein all drive wheels 28 are in engagement with a common adjusting ring 29 arranged coaxially to the cylinder axis. In the exemplary embodiment shown, this is provided with peripheral toothed strips 30, in each of which an associated drive wheel 28 engages. The toothed strips 30 are offset from one another by circumferential recesses 31, into which cassettes provided on the cylinder side engage to accommodate the folding jaws 3. The adjusting ring 29 arranged in the area of a cylinder end face is received on pins 32 on the cylinder side which engage in assigned arc slots 33. At least one of the pins 32 is designed as a clamping screw 32a, by means of which the adjusting ring 29 can be locked.

Der Stellring 29 kann von Hand verdreht werden. Im dar­gestellten Ausführungsbeispiel ist der Stellring 29 mit einer im Bereich seines Innenumfangs vorgesehenen Ver­zahnung 34 versehen, in die ein im Bereich der Zylinder­stirnseite gelagertes Stellrad 35 eingreift, das mit einem Sechskant 36 zum Ansetzen eines Drehschlüssels ver­sehen sein kann.The adjusting ring 29 can be turned by hand. In the exemplary embodiment shown, the adjusting ring 29 is provided with a toothing 34 provided in the region of its inner circumference, into which engages an adjusting wheel 35 which is mounted in the region of the cylinder end face and which can be provided with a hexagon 36 for attaching a rotary key.

Es ist aber auch möglich, den Stellring 29 mittels eines zugeordneten Motors anzutreiben. Eine derartige Ausfüh­rung liegt der Figur 5 zugrunde. Hierbei handelt es sich um einen doppelt breiten Falzklappenzylinder mit zwei auf einer gemeinsamen Achse 37 nebeneinander angeordne­ten, unabhängig voneinander betreibbaren Zylinderab­schnitten 38a, b. Die im Bereich der beiden Zylinder­abschnitte 38a, 38b vergesehenen, in radialer Richtung ein- und ausfahrbaren Leisten 7 mit elastischem Belag 8 sind jeweils unabhängig von den Leisten des benachbarten Zylinderabschnitts betätigbar. Der grundsätzlich Aufbau entspricht dabei dem aus Figur 2 entnehmbaren Aufbau, wobei die Exzenterwelle 20 nicht über die ganze Zylinder­breite durchgeht, sondern sich nur über den zugeordneten Zylinderabschnitt 38a, b erstreckt. Die Exzenterwellen 20 der beiden Zylinderabschnitte 38a, b sind im Bereich der voneinander abgewandten Zylinderstirnseiten mit An­triebsmitteln versehen. Diese entsprechen dabei der Ausführung gemäß Figur 4 mit dem Unterschied, daß das mit dem Stellring 29 kämmende Stellrad 35 durch einen jeweils zugeordneten Antriebsmotor 39 angetrieben wird, der hier im inneren des Zylinders bzw. des jeweiligen Zylinderabschnitts angeordnet und von innen an die be­treffende Stirnwand angesetzt ist.However, it is also possible to drive the adjusting ring 29 by means of an associated motor. Such an embodiment is based on FIG. 5. This is a double-width jaw cylinder with two cylinder sections 38a, b which can be operated next to one another on a common axis 37 and can be operated independently of one another. The strips 7 provided in the region of the two cylinder sections 38a, 38b, which can be retracted and extended in the radial direction, with elastic covering 8 can be operated independently of the strips of the adjacent cylinder section. The basic structure corresponds to the structure shown in FIG. 2, the eccentric shaft 20 not passing over the entire cylinder width, but only extending over the associated cylinder section 38a, b. The eccentric shafts 20 of the two cylinder sections 38a, b are provided with drive means in the region of the cylinder faces facing away from one another. These correspond to the embodiment according to FIG. 4, with the difference that the adjusting wheel 35 meshing with the adjusting ring 29 is driven by a respectively assigned drive motor 39, which is arranged here inside the cylinder or the respective cylinder section and attached to the relevant end wall from the inside is.

Dadurch, daß die Umfangsabschnitte 6 nur mit ihrem in Drehrichtung hinteren Ende in radialer Richtung auskip­pen können, ist sichergestellt, daß nur das hintere Ende der Produkte p, nachdem es von am Einlauf zum Spalt zwischen den Zylindern 2, 4 vorgesehenen, in Figur 1 bei 40 angedeuteten Führungsmitteln, wie Bürsten, Bänder etc. nicht mehr geführt wird, an den Zylindern 2 ange­preßt und damit geführt werden kann. Andererseits wird durch die Beschränkung der Anpressung auf das hintere Produktende sichergestellt, daß die von den Abschnitten 6 aufzunehmende Walkarbeit in Grenzen bleibt und daß ei­ne Beschädigung der Produkte, wie eine Markierung etc., unterbleibt.The fact that the peripheral portions 6 can tip out in the radial direction only with their rear end in the direction of rotation ensures that only the rear end of the products p, after being provided at the inlet to the gap between the cylinders 2, 4, in FIG 40 indicated guide means, such as brushes, tapes, etc. is no longer guided, pressed against the cylinders 2 and can thus be guided. On the other hand, the limitation of the contact pressure to the rear end of the product ensures that the flexing work to be taken up by the sections 6 remains limited and that the products are not damaged, such as a marking, etc.

Claims (10)

1. Falzapparat mit wenigstens zwei mit zusammenwirken­den Falzorganen in Form von Falzmessern (1) und Falzklappen (3) versehenen Falzzylindern (2, 4), dadurch gekennzeichnet, daß wenigstens ein Falzzylin­der (2 bzw. 4) Umfangsabschnitte (6) aufweist, die zumindest bereichsweise in radialer Richtung verstell­bar sind.1. Folding apparatus with at least two cooperating folding members in the form of folding knives (1) and folding jaws (3) folding cylinders (2, 4), characterized in that at least one folding cylinder (2 or 4) has peripheral sections (6), which at least are adjustable in areas in the radial direction. 2. Falzapparat nach Anspruch 2, dadurch gekennzeichnet, daß der mit Falzklappen (3) versehene Falzzylinder (4) in radialer Richtung verstellbare Umfangsabschnit­te (6) aufweist.2. Folding apparatus according to claim 2, characterized in that the folding cylinder (3) provided folding cylinder (4) in the radial direction adjustable peripheral portions (6). 3. Falzapparat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Umfangsbereich zwi­schen aufeinanderfolgenden Falzorganen (3) jeweils in zwei Abschnitte (5, 6) unterteilt ist, von denen der dem benachbarten Falzorgan (3) nachlaufende Abschnitt (5) in radialer Richtung verstellbar und der andere Abschnitt (6) fest angeordnet sind.3. Folding apparatus according to one of the preceding claims, characterized in that the peripheral region between successive folding members (3) is each divided into two sections (5, 6), of which the section (5) trailing the adjacent folding member (3) in the radial direction adjustable and the other section (6) are fixed. 4. Falzapparat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die in radialer Richtung verstellbaren Abschnitte (5) mit Abstand nebeneinan­der angeordnete, gemeinsam in radialer Richtung aus­stellbare vorzugsweise, aus zugeordneten Umfangs­schlitzen (10) ausfahrbare Leisten (7) aufweisen, die vorzugsweise mit einem elastischen Belag (8) versehen sind und daß die unverstellbaren Zylinderabschnitte (6) in Verlängerung der Leisten (7) angeordnete, vor­zugsweise durch elastische Streifen (9) gebildete Stege aufweisen.4. folder according to one of the preceding claims, characterized in that the sections (5) which can be adjusted in the radial direction have spaced-apart strips (7) which can preferably be extended in the radial direction and which can be extended jointly in the radial direction and which are preferably provided with an elastic covering (8) and that the non-adjustable cylinder sections (6) in the extension of the strips (7) arranged, preferably by elastic strips (9) formed webs. 5. Falzapparat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die verstellbaren Um­fangsabschnitte vorzugsweise in Form der Leisten (7) zur Beschränkung ihrer Wirkung auf das hintere Pro­duktende um eine zylinderachsparallele, vorzugsweise im Bereich des verlaufenden Leistenendes vorgesehene Achse schwenkbar und nur mit ihrem hinteren Ende in radialer Richtung ausstellbar sind.5. Folding apparatus according to one of the preceding claims, characterized in that the adjustable peripheral sections preferably in the form of the strips (7) to limit their effect on the rear end of the product about a parallel to the cylinder axis, preferably provided in the region of the extending strip end and only with its rear End are extendable in the radial direction. 6. Falzapparat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die verstellbaren Um­fangsabschnitte (6) mittels einer Stelleinrichtung entgegen der Wirkung einer Rückstellfeder (16) in radialer Richtung ausstellbar sind.6. Folding apparatus according to one of the preceding claims, characterized in that the adjustable peripheral sections (6) can be raised in the radial direction by means of an adjusting device against the action of a return spring (16). 7. Falzapparat nach Anspruch 6, dadurch gekennzeichnet, daß die Leisten (7) auf einem jeweils zugeordneten, vorzugsweise im Bereich der Mitte der Leisten (7) angeordneten von der vorzugsweise als Tellerfederpaket ausgebildeten Rückstellfeder (16) umfaßten, zylinder­ festen Radelstift (11) in radialer Richtung verschieb­bar und kippbar aufgenommen sind und vorzugsweise mit Stützfüßen (17 bzw. 18) einerseits an einer zylinderseitigen Stützfläche (19) und andererseits an der auf dem Zylinder vorgesehenen Stelleinrichtung anliegen.7. Folding apparatus according to claim 6, characterized in that the strips (7) on an associated, preferably in the region of the center of the strips (7) arranged from the preferably designed as a plate spring assembly return spring (16), cylinder fixed Radelstift (11) displaceable and tiltable in the radial direction and preferably rest with support feet (17 or 18) on the one hand on a cylinder-side support surface (19) and on the other hand on the actuator provided on the cylinder. 8. Falzapparat nach Anspruch 7, dadurch gekennzeichnet, daß die Stelleinrichtung eine zylinderachsparallel über die zugeordneten Leisten (7) sich erstreckende Exzenterwelle (20) aufweist, die mittels einer Dreh­einrichtung verdrehbar und mittels einer Klemmein­richtung feststellbar ist, wobei vorzugsweise die Exzenterwellen (20) mit seitlichen Antriebsrädern (28) versehen und die im Bereich einer Zylinderstirn­seite vorgesehenen Antriebsräder (28) mit einem ge­meinsamen, zur Zylinderachse koaxialen Stellring (29) im Eingriff sind, der vorzugsweise den An­triebsrädern (28) zugeordnete, durch Umfangsausneh­mungen (31), in welche die Falzorgane (3) eingreifen, voneinander abgesetzte Zahnleisten (30) und eine mit einem vorzugsweise mittels eines auf dem Zylinder aufgenommenen Motors (39) antriebbaren Stellrad (35) kämmende Innenverzahnung (34) aufweist.8. Folding apparatus according to claim 7, characterized in that the actuating device has an eccentric shaft (20) which extends parallel to the cylinder and via the associated strips (7) and which can be rotated by means of a rotating device and can be ascertained by means of a clamping device, preferably the eccentric shafts (20) lateral drive wheels (28) and the drive wheels (28) provided in the area of a cylinder end face are engaged with a common adjusting ring (29) which is coaxial with the cylinder axis and which is preferably assigned to the drive wheels (28) by circumferential recesses (31) into which the The folding members (3) engage, toothed racks (30) which are set apart from one another and have an internal toothing (34) which meshes with a setting wheel (35) which can preferably be driven by means of a motor (39) mounted on the cylinder (35). 9. Falzapparat nach Anspruch 7, dadurch gekennzeichnet, daß die Exzenterwellen (20) und/oder das Stellrad (35) einen Schlüsselansetzkopf (24 bzw. 36) aufweisen.9. Folding apparatus according to claim 7, characterized in that the eccentric shafts (20) and / or the adjusting wheel (35) have a key attachment head (24 or 36). 10. Falzapparat nach einem der vorhergehenden Ansprüche mit vorzugsweise in der Mitte unterteilten, im Be­ reich jedes Zylinderabschnitts (38a, 38b) mit un­abhängig voneinander steuerbaren Falzorganen versehe­nen Falzzylindern, dadurch gekennzeichnet, daß die in radialer Richtung verstellbaren Umfangsabschnitte (5) der nebeneinander angeordneten Zylinderabschnitte (38a, 38b) unabhängig voneinander betätigbar sind, indem die Exzenterwellen (20) jeweils über die Brei­te des zugeordneten Zylinderabschnitts (38a, 38b) durchgehen und von den einander gegenüberliegenden Zylinderstirnseiten her antreibbar sind.10. folder according to one of the preceding claims with preferably divided in the middle, in loading Rich each cylinder section (38a, 38b) with independently controllable folding members provided folding cylinders, characterized in that the circumferential sections (5) of the cylinder sections (38a, 38b) arranged next to one another which can be adjusted in the radial direction can be actuated independently of one another by the eccentric shafts (20) in each case Go through the width of the assigned cylinder section (38a, 38b) and can be driven from the opposing cylinder faces.
EP90103371A 1989-03-04 1990-02-22 Folder Expired - Lifetime EP0386531B1 (en)

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DE3906975 1989-03-04
DE3906975A DE3906975A1 (en) 1989-03-04 1989-03-04 FOLDING APPARATUS

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Cited By (3)

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DE4234307A1 (en) * 1992-10-12 1994-04-14 Heidelberger Druckmasch Ag Device for trouble-free product conveyance in folders
EP1074500A1 (en) * 1999-08-05 2001-02-07 Heidelberger Druckmaschinen Aktiengesellschaft Printed products transport cylinder of a folding apparatus
EP3363634A1 (en) * 2017-02-21 2018-08-22 manroland web systems GmbH Insert for a folding cylinder and method for producing the same

Also Published As

Publication number Publication date
EP0386531B1 (en) 1994-06-01
DE59005857D1 (en) 1994-07-07
DE3906975A1 (en) 1990-09-06
EP0386531A3 (en) 1991-04-10
US5039076A (en) 1991-08-13
JPH02270763A (en) 1990-11-05
JP2788321B2 (en) 1998-08-20

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