EP0141136B1 - Delay section for a folding apparatus - Google Patents

Delay section for a folding apparatus Download PDF

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Publication number
EP0141136B1
EP0141136B1 EP84110358A EP84110358A EP0141136B1 EP 0141136 B1 EP0141136 B1 EP 0141136B1 EP 84110358 A EP84110358 A EP 84110358A EP 84110358 A EP84110358 A EP 84110358A EP 0141136 B1 EP0141136 B1 EP 0141136B1
Authority
EP
European Patent Office
Prior art keywords
belt
delay section
eccentric
section according
plane
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
Application number
EP84110358A
Other languages
German (de)
French (fr)
Other versions
EP0141136A1 (en
Inventor
Ingo Köbler
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19833332809 external-priority patent/DE3332809C2/en
Priority claimed from DE19833338814 external-priority patent/DE3338814C2/en
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0141136A1 publication Critical patent/EP0141136A1/en
Application granted granted Critical
Publication of EP0141136B1 publication Critical patent/EP0141136B1/en
Expired legal-status Critical Current

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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
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68Reducing the speed of articles as they advance
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00Power transmission; Driving means
    • B65H2403/50Driving mechanisms
    • B65H2403/51Cam mechanisms
    • B65H2403/514Cam mechanisms involving eccentric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/20Belts
    • B65H2404/26Particular arrangement of belt, or belts
    • B65H2404/261Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
    • 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
    • Y10T74/00Machine element or mechanism
    • Y10T74/19Gearing
    • Y10T74/19555Varying speed ratio

Definitions

  • the invention relates to a tape delay line for a folder, in which folded or to be folded copies can be introduced into a tape line system forming the delay line, the tapes of which can be driven at a variable speed in such a way that when the copy is taken over, the tapes (tape sections) have a high rate Run speed, after which they reduce their speed after detecting the specimens (see DE-A-3049595).
  • the band delay lines shown can be arranged, for example, behind the folding flap or collecting cylinder of a folding apparatus in order to feed the cross-folded printed copies to a third fold, the so-called “second longitudinal fold”.
  • the belt deceleration line must therefore take over the folding copies at machine speed and then brake them, the delivery of the folding copies, for example to a pair of folding rollers, to take place at minimum speed.
  • This belt deceleration system essentially consists of eccentrics 2 and 3, which are arranged on a shaft 1 in a manner fixed against relative rotation, around which the upper belt 4 is partially guided. As can be seen in FIG. 1, both eccentrics 2, 3 have the same eccentricity X. The shape and size of the eccentrics 2 and 3 are the same, but the eccentric 3, based on the eccentric 2, is offset by 180 ° on the shaft 1.
  • the belt section a is fed to the upper eccentric 2, which, as shown in FIG. 2, lies in a different plane than the eccentric 3.
  • the belt section b leaves the eccentric 2 and becomes a deflection roller 5 led.
  • the deflecting roller 5 has the task of deflecting the belt 4 and guiding it from the plane of the eccentric 2 into the plane of the eccentric 3, as can be seen in FIG. 2.
  • the belt section c passes behind the deflection roller 5 to the eccentric 3 and also wraps partially around it, after which the belt section d is first fed to a belt guide roller 6 and then via the belt section e to the belt guide roller 7. Between the rollers 7, 6, the belt section f passes through the delay line A.
  • the belt section a is returned to the plane of the eccentric 3 by the belt guide roller 6.
  • the band delay system shown in Figs. 1 and 2 comprises an upper and a lower band.
  • the lower band 4 ' is guided in the same way, but in mirror image, to the upper band 4, which is why the same reference numerals are used for the same components, but each are provided with an apostrophe to distinguish them.
  • the inventive leadership of the belts 4, 4 'and the arrangement and design of the eccentric means that when the shaft 1 or 1' rotates, which can be driven, the belts 4, 4 'change their speed in the delay line A in the Modify the rhythm of the rotation of the eccentrics 2, 3 or 2 ', 3' in such a way that the copies E to be folded or to be folded in from the right are grasped at the maximum speed and then decelerated. If the copies E reach their minimum speed, they can be folded away in a known manner, for example with the aid of a folding knife.
  • the delay line according to the invention can be created at very low cost.
  • FIGS. 3 and 4 show a modification of the tape guide shown in FIGS. 1 and 2. Since essentially the same components are used in this second embodiment. To distinguish them, only one was prefixed to each reference number.
  • the band 14 is fed with its band section 1a first around the eccentric 13 and then over the band section 1 to the deflection roller 15, after which the band section 1c reaches the eccentric 12.
  • both the deflection roller 15 and behind it are rotated by 180 ° of the belt sections 1b and 1c, these rotations of course being carried out in the opposite direction. That is, if the band section 1b is rotated through 180 ° to the right, the band section 1c is rotated through 180 ° to the left, that is, rotated back again.
  • the belt section 1d behind the eccentric 12 then arrives at the belt guide roller 16 and as belt section e to the belt guide roller 17.
  • the delay line A is between the belt guide rollers 17 and 18 formed, the band guide roller 18 lying below the deflection roller 15 being jointly responsible for guiding the band section 1a into the plane of the eccentric 13.
  • FIGS. 3 and 4 A comparison of the embodiment according to FIGS. 1 and 2 with FIGS. 3 and 4 shows that the embodiment according to FIGS. 3 and 4 takes up a little more space, since the belt 14 with the sections 1d, 1e must be guided around the outside of the belt guide roller 16 .
  • the specimens E entering the delay line A from the right are taken over at the maximum speed of this section of tape and then decelerated in the manner already described.
  • the belt section 2a passes around a front belt guide roller 25, that is to say in the plane of the front eccentric 23, after which the belt section 2b is fed to the front eccentric 23.
  • the band section 2c arrives at a band guide roller 26, which is also in the plane of the eccentric 23.
  • the offset takes place via the belt section 2d to the belt guide roller 27 lying in the plane of the eccentric 22.
  • the belt section 2e then reaches the rear eccentric 22.
  • the belt section 2f runs to the one lying in the plane of the eccentric 22 Tape guide roller 29 and then to the tape guide roller 28 in the same plane as the tape section 2g.
  • the parts and band sections lying in the plane of the rear eccentric 22 have been marked with an asterisk.
  • the tape 24 is returned in the tape section 2a, since the tape guide roller 30 is again in the plane of the eccentric 23, that is to say in the front plane.
  • the lower band line section 2i of the delay line A is formed between the band guide rollers 30 and 31.
  • a return, d. H. a detour around the entire arrangement This runs as a band section 2j around the band guide roller 32, as a band section 2k around the band guide roller 33, as a band section 21 around the band guide roller 34 and as a band section 2m around the band guide roller 35.
  • the upper band section 2n of the delay line A is formed between the band guide rollers 35 and 25. All tape guide rollers 30 to 35 are in the same plane.
  • rotation of the eccentrics 22, 23 around the shaft 21 results in a deceleration and an acceleration of the belt sections 2i and 2n in the deceleration section A, the required path compensation being automatically ensured by the double eccentrics 22, 23.
  • a deflection roller 15 and 18 is indicated schematically, which is equipped with unspecified rims on both sides. Such rollers ensure a safe guidance of the tapes used.
  • eccentric also means eccentric-like curves.
  • the two eccentrics used do not necessarily have to be identical curves, but can also be calculated so that no relative movements occur.
  • FIGS. 8 to 10 Another exemplary embodiment is described with reference to FIGS. 8 to 10.
  • Fig. 8 shows a tape delay line for a folder into which folded or to be folded copies can be inserted.
  • the tapes of this tape line system can be driven at a variable speed in such a way that when a copy is taken over, the tapes or tape sections run at a high speed, after which they reduce their speed after the copies have been detected.
  • the copies EO entering the delay line AO from the right are taken over at the maximum speed of this strip section and, as already mentioned, decelerated so that, for example, a fold can be made downwards at the minimum speed.
  • the belt section 20a runs to a front, i.e. H. in the plane of a front eccentric or cam disk 230 lying tape guide roller 250, after which it is fed to the front eccentric 230 as a band section 20b.
  • the band section 20c arrives at a band guide roller 260, which is also in the plane of the eccentric 230.
  • the plane offset takes place in the band section 20d to the band guide roller 270 lying in the plane of the rear eccentric or cam disc 220.
  • the band section 2e then runs directly to the rear eccentric 220.
  • the band 240 runs as a section 20f to the tape guide roller 290 lying in the plane of the eccentric 220 and then to the tape guide roller 280 in the same plane as the tape section 20g.
  • the parts and band sections lying in the plane of the rear eccentric 220 have been marked with an asterisk.
  • the band is returned to the front plane 240 via the band section 20b, since the band guide roller 300 is again in the plane of the eccentric 230, that is to say in the front plane.
  • the lower band line section 20i of the delay line AO is formed between the band guide rollers 300 and 310.
  • a return that is to say a detour around the entire arrangement, must then take place. This runs as a belt section 20j around the belt guide roller 320, as a belt section 20k around the belt guide roller 330, as a belt section 201 around the belt guide roller 340 and as a belt section 20m around the belt guide roller 350.
  • the upper belt section 20n of the delay line AO is formed between the belt guide rollers 350 and 250. All tape guide rollers 300 to 330 are on the same level.
  • the belt section 20c is not guided from the front eccentric 230 directly to the belt guide roller 260, but via a roller 360 forming a belt length compensation element, which e.g. B. is movable via a lifting element 400 in the direction of the arrow, so that in the inventive design of the outer contour of the eccentric 220, 230, a compensation of the rhythmically occurring band length differences can take place.
  • a roller 360 forming a belt length compensation element, which e.g. B. is movable via a lifting element 400 in the direction of the arrow, so that in the inventive design of the outer contour of the eccentric 220, 230, a compensation of the rhythmically occurring band length differences can take place.
  • an eccentric can also be used, the outer contour and eccentricity of which are fixed in such a way that it can compensate for the band length differences that occur.
  • the two eccentrics 220, 230 used which are arranged in mirror image to a common center line MO in order to obtain the smallest band length differences, each have an outer contour that deviates from the circular shape.
  • one half of the outer contour each has approximately the shape of an isometric and the other half has the shape of a dimetric ellipse. This results in sinusoidal decelerations and sinusoidal accelerations in the band sections 20i and 20n in the band delay line AO during the rotation of the eccentrics 220, 230.
  • the measure of the eccentricity XO of the eccentrics 220, 230 depends on the ratio of maximum speed to minimum speed.
  • a minimum speed of 0 would result if this measure corresponds to half the diameter, i. H. if the two eccentrics 220, 230 would rotate about a point lying on their periphery.
  • the ratio of approximately 4: 1 is sufficient, which means that in this case the common center of rotation is approximately at the level of the lower focal point of the two eccentrics 220, 230 with the approximately elliptical curve shape.
  • FIGS. 9 and 10 show how the contour of an eccentric can be empirically determined by processing an eccentric, with the aid of which the desired sinusoidal deceleration and acceleration in the deceleration path are possible.
  • 2 shows the development of the outer contour 380 in 30 ° steps of one half of the eccentric according to the invention for the range from 0 ° to 180 °, wherein this is rotated from 0 ° to 180 ° in the direction of the arrow.
  • the outer contour 390 has no influence in FIG. 9 yet.
  • the distance traveled in the deceleration section AO between two belt rolls, not specified, is in each case plotted for 30 °.
  • the mirror-image arrangement of the eccentrics 220, 230 to form a common line MO results in a minimal path difference to be compensated for in the band section 20c, so that the band length compensation elements used have to perform the smallest stroke.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Description

Die Erfindung betrifft eine Bandverzögerungsstrecke für einen Falzapparat, in welchem gefalzte oder zu falzende Exemplare in ein die Verzögerungsstrecke bildendes Bandleitungssystem einführbar sind, dessen Bänder in der Weise mit variabler Geschwindigkeit antreibbar sind, daß bei der Übernahme des Exemplares die Bänder (Bänderabschnitte) mit einer hohen Geschwindigkeit laufen, wonach diese nach Erfassen der Exemplare ihre Geschwindigkeit verringern (siehe DE-A-3049595).The invention relates to a tape delay line for a folder, in which folded or to be folded copies can be introduced into a tape line system forming the delay line, the tapes of which can be driven at a variable speed in such a way that when the copy is taken over, the tapes (tape sections) have a high rate Run speed, after which they reduce their speed after detecting the specimens (see DE-A-3049595).

In der älteren Patentanmeldung P 3321 811.0-27 ist bereits ein Falzapparat mit einer durch Bandabschnitte gebildeten Verzögerungsstrecke beschrieben. Zur Geschwindigkeitsänderung der Bänderabschnitte werden Bandumlenkrollen im Rhythmus der Geschwindigkeitsvariationen parallel zur Falzexemplartransportrichtung hin- und hergeschoben. Durch diese Verschiebungen können unerwünschte Verschleißerscheinungen hervorgerufen werden, die besonders die Lebensdauer der verwendeten Transportbänder negativ beeinflussen.In the older patent application P 3321 811.0-27, a folder with a delay line formed by tape sections is already described. To change the speed of the belt sections, belt deflection rollers are moved back and forth in the rhythm of the speed variations parallel to the direction of the fold copy transport. These displacements can cause undesirable signs of wear, which have a particularly negative impact on the service life of the conveyor belts used.

Aufgabe der Erfindung ist es, eine Verzögerungsstrecke der eingangs definierten Art zu schaffen, bei der die rhythmischen Bandbeschleunigungen und -verzögerungen allein durch die Rotation von Bandführungselementen möglich sind. Diese Aufgabe wird durch die Anwendung der Merkmale des kennzeichnenden Teils des Patentanspruchs gelöst. Weiterbildungen ergeben sich aus den Unteransprüchen sowie aus der Beschreibung in Verbindung mit den Zeichnungen. In diesen zeigen jeweils schematisch :

  • Figuren 1 und 2 eine erste Ausführungsform der erfindungsgemäßen Bandverzögerungsstrecke,
  • Figuren 3 und 4 eine Variante einer sich an die Ausführungsform gemäß Fig. 1 und 2 anlehnenden Bänderführung,
  • Figur 5 eine Bandverzögerungsstrecke mit nur einem Bandsystem,
  • Figur 6 eine Bandführungsrolle,
  • Figur 7 eine Bandumlenkrolle,
  • Figur 8 ein weiteres Ausführungsbeispiel einer Bandverzögerungsstrecke und
  • Figuren 9 und 10 eine empirische Entwicklungsmöglichkeit des Exzenterkurvenverlaufes, mit dessen Hilfe eine sinusförmige Bandverzögerung und Bandbeschleunigung mit der Vorrichtung gemäß Fig. 7 ermöglicht werden.
The object of the invention is to create a delay line of the type defined in the introduction, in which the rhythmic belt accelerations and decelerations are possible solely by the rotation of belt guide elements. This object is achieved by applying the features of the characterizing part of the patent claim. Further developments result from the subclaims and from the description in conjunction with the drawings. Each of these shows schematically:
  • FIGS. 1 and 2 show a first embodiment of the band delay line according to the invention,
  • FIGS. 3 and 4 show a variant of a belt guide based on the embodiment according to FIGS. 1 and 2,
  • FIG. 5 shows a band delay line with only one band system,
  • FIG. 6 a tape guide roller,
  • FIG. 7 a belt deflection roller,
  • Figure 8 shows another embodiment of a band delay line and
  • FIGS. 9 and 10 an empirical possibility of developing the eccentric curve profile, with the aid of which a sinusoidal band deceleration and band acceleration are made possible with the device according to FIG. 7.

Die dargestellten Bandverzögerungsstrecken können beispielsweise hinter dem Falzklappen-oder Sammelzylinder eines Falzapparates angeordnet werden, um die quergefalzten Druckexemplare einem dritten Falz, dem sogenannten « zweiten Längsfalz », zuzuführen. Hierbei ist es bekanntlich erforderlich, daß die mit hoher Geschwindigkeit aus der Maschine bzw. aus den Zylindern kommenden Falzexemplare abgebremst werden. Die Bandverzögerungsstrecke muß demnach die Falzexemplare mit Maschinengeschwindigkeit übernehmen und diese anschliessend abbremsen, wobei die Abgabe der Falzexemplare, beispielsweise an ein Falzwalzenpaar, mit Minimalgeschwindigkeit erfolgen soll.The band delay lines shown can be arranged, for example, behind the folding flap or collecting cylinder of a folding apparatus in order to feed the cross-folded printed copies to a third fold, the so-called “second longitudinal fold”. As is well known, it is necessary here for the fold copies coming out of the machine or out of the cylinders to be braked. The belt deceleration line must therefore take over the folding copies at machine speed and then brake them, the delivery of the folding copies, for example to a pair of folding rollers, to take place at minimum speed.

In Fig. 1 und 2 werden von rechts kommend Falzexemplare E einer Verzögerungsstrecke A zugeführt. Dieses Bandverzögerungssystem besteht im wesentlichen aus auf einer Welle 1 drehfest angeordneten Exzentern 2 und 3, um die teilweise das obere Band 4 geführt ist. Wie Fig. 1 erkennen läßt, weisen beide Exzenter 2, 3 die gleiche Exzentrizität X auf. Form und Größe der Exzenter 2 und 3 sind gleich, jedoch ist der Exzenter 3, bezogen auf den Exzenter 2, auf der Welle 1 um 180° versetzt.1 and 2, fold copies E coming from the right are fed to a delay line A. This belt deceleration system essentially consists of eccentrics 2 and 3, which are arranged on a shaft 1 in a manner fixed against relative rotation, around which the upper belt 4 is partially guided. As can be seen in FIG. 1, both eccentrics 2, 3 have the same eccentricity X. The shape and size of the eccentrics 2 and 3 are the same, but the eccentric 3, based on the eccentric 2, is offset by 180 ° on the shaft 1.

Hinter der Verzögerungsstrecke A wird der Bandabschnitt a dem oberen Exzenter 2 zugeführt, der, wie Fig. 2 zeigt, in einer anderen Ebene liegt als der Exzenter 3. Nach teilweiser Umschlingung des Exzenters 2 verläßt der Bandabschnitt b den Exzenter 2 und wird um eine Umlenkrolle 5 geführt. Die Umlenkrolle 5 hat die Aufgabe, das Band 4 umzulenken und von der Ebene des Exzenters 2 in die Ebene des Exzenters 3 zu führen, wie Fig. 2 erkennen läßt. Der Bandabschnitt c gelangt hinter der Umlenkrolle 5 zu dem Exzenter 3 und umschlingt diesen ebenfalls teilweise, wonach der Bandabschnitt d zunächst einer Bandführungsrolle 6 und anschließend über den Bandabschnitt e der Bandführungsrolle 7 zugeführt wird. Zwischen den Rollen 7, 6 durchläuft der Bandabschnitt f die Verzögerungsstrecke A. Die Zurückführung des Bandabschnittes a in die Ebene des Exzenters 3 erfolgt durch die Bandführungsrolle 6.After the delay line A, the belt section a is fed to the upper eccentric 2, which, as shown in FIG. 2, lies in a different plane than the eccentric 3. After the eccentric 2 is partially wrapped, the belt section b leaves the eccentric 2 and becomes a deflection roller 5 led. The deflecting roller 5 has the task of deflecting the belt 4 and guiding it from the plane of the eccentric 2 into the plane of the eccentric 3, as can be seen in FIG. 2. The belt section c passes behind the deflection roller 5 to the eccentric 3 and also wraps partially around it, after which the belt section d is first fed to a belt guide roller 6 and then via the belt section e to the belt guide roller 7. Between the rollers 7, 6, the belt section f passes through the delay line A. The belt section a is returned to the plane of the eccentric 3 by the belt guide roller 6.

Das in den Fig. 1 und 2 dargestellte Bandverzögerungssystem umfaßt ein oberes und ein unteres Band. Das untere Band 4' ist in der gleichen Weise, jedoch spiegelbildlich zu dem oberen Band 4 geführt, weshalb für die gleichen Bauteile die gleichen Bezugszeichen verwendet werden, die jedoch zur Unterscheidung jeweils mit einem Apostroph versehen sind. Das gleiche gilt für die Ausführungsform gemäß Fig. 3 und 4.The band delay system shown in Figs. 1 and 2 comprises an upper and a lower band. The lower band 4 'is guided in the same way, but in mirror image, to the upper band 4, which is why the same reference numerals are used for the same components, but each are provided with an apostrophe to distinguish them. The same applies to the embodiment according to FIGS. 3 and 4.

Durch die erfindungsgemäße Führung der Bänder 4, 4' und der Anordnung und Ausbildung der Exzenter wird erreicht, daß bei einer Rotation der Welle 1 bzw. 1' die angetrieben sein kann, die Bänder 4, 4' ihre Geschwindigkeit in der Verzögerungsstrecke A in der Weise im Rhythmus der Rotation der Exzenter 2, 3 bzw. 2', 3' ändern, daß die von rechts einlaufenden gefalzten oder zu falzenden Exemplare E mit der Maximalgeschwindigkeit erfaßt und anschließend verzögert werden. Erreichen die Exemplare E ihre Minimalgeschwindigkeit, so können sie beispielsweise mit Hilfe eines Falzmessers in bekannter Weise weggefalzt werden.The inventive leadership of the belts 4, 4 'and the arrangement and design of the eccentric means that when the shaft 1 or 1' rotates, which can be driven, the belts 4, 4 'change their speed in the delay line A in the Modify the rhythm of the rotation of the eccentrics 2, 3 or 2 ', 3' in such a way that the copies E to be folded or to be folded in from the right are grasped at the maximum speed and then decelerated. If the copies E reach their minimum speed, they can be folded away in a known manner, for example with the aid of a folding knife.

Durch die vorteilhafte Anordnung der Exzenter 2, 3 bzw. 2', 3' wird zum einen die Geschwindigkeitsvariation erreicht und zum anderen erfolgt quasi ein Wegausgleich für die Bänder 4, 4', ohne daß hier lineare Verschiebevorgänge von Umlenkmitteln erforderlich sind. Zudem kann die erfindungsgemäße Verzögerungsstrecke mit sehr geringem Kostenaufwand erstellt werden.Due to the advantageous arrangement of the eccentrics 2, 3 and 2 ', 3', on the one hand the speed variation is achieved and on the other hand there is virtually a path compensation for the belts 4, 4 ', without linear displacement processes of deflection means being required here. In addition, the delay line according to the invention can be created at very low cost.

Fig. 3 und 4 zeigen eine Abwandlung der in den Fig. 1 und 2 gezeigten Bandführung. Da im wesentlichen die gleichen Bauteile bei diesem zweiten Ausführungsbeispiel verwendet werden. wurde zur Unterscheidung lediglich jedem Bezugszeichen ein Eins vorausgestellt. Auch hier werden wieder obere Bänder 14 und untere Bänder 14' verwendet, die um die auf den Wellen 11, 11' drehfest angeordneten Exzenter 12, 13 bzw. 12', 13' geführt werden. Die Überführung und Umlenkung der Bänder 14, 14' erfolgt wiederum mit Hilfe von Umlenkrollen 15, 15' bzw. 18, 18'.3 and 4 show a modification of the tape guide shown in FIGS. 1 and 2. Since essentially the same components are used in this second embodiment. To distinguish them, only one was prefixed to each reference number. Here, too, upper belts 14 and lower belts 14 'are used, which are guided around the eccentrics 12, 13 and 12', 13 'arranged on the shafts 11, 11' in a rotationally fixed manner. The transfer and deflection of the belts 14, 14 'again takes place with the aid of deflection rollers 15, 15' and 18, 18 '.

Das Band 14 wird mit seinem Bandabschnitt 1a zunächst um den Exzenter 13 und anschließend über den Bandabschnitt 1 der Umlenkrolle 15 zugeführt, wonach der Bandabschnitt 1c zu dem Exzenter 12 gelangt. Wie Fig. 4 am besten zeigt, erfolgt sowohl vor der Umlenkrolle 15 als auch hinter dieser eine Verdrehung der Bandabschnitte 1b und 1c jeweils um 180°, wobei diese Verdrehungen selbstverständlich in entgegengesetzter Richtung vorgenommen werden. Das heißt, wird der Bandabschnitt 1b um 180° nach rechts verdreht, so wird der Bandabschnitt 1c um 180° nach links, das heißt wieder zurückgedreht. Dadurch ergibt sich eine vorteilhafte Führung dieser Bandabschnitte zwischen den Exzentern 11, 12 und der Umlenkrolle 15. Der Bandabschnitt 1d hinter dem Exzenter 12 gelangt dann zu der Bandführungsrolle 16 und als Bandabschnitt e zu der Bandführungsrolle 17. Die Verzögerungsstrecke A wird zwischen den Bandführungsrollen 17 und 18 gebildet, wobei die unterhalb der Umlenkrolle 15 liegende Bandführungsrolle 18 mitverantwortlich ist für die Führung des Bandabschnittes 1a in die Ebene des Exzenters 13.The band 14 is fed with its band section 1a first around the eccentric 13 and then over the band section 1 to the deflection roller 15, after which the band section 1c reaches the eccentric 12. As best shown in FIG. 4, both the deflection roller 15 and behind it are rotated by 180 ° of the belt sections 1b and 1c, these rotations of course being carried out in the opposite direction. That is, if the band section 1b is rotated through 180 ° to the right, the band section 1c is rotated through 180 ° to the left, that is, rotated back again. This results in an advantageous guidance of these belt sections between the eccentrics 11, 12 and the deflection roller 15. The belt section 1d behind the eccentric 12 then arrives at the belt guide roller 16 and as belt section e to the belt guide roller 17. The delay line A is between the belt guide rollers 17 and 18 formed, the band guide roller 18 lying below the deflection roller 15 being jointly responsible for guiding the band section 1a into the plane of the eccentric 13.

Ein Vergleich der Ausführungsform gemäß Fig. 1 und 2 mit Fig. 3 und 4 zeigt, daß die Ausführungsform gemäß Fig. 3 und 4 etwas mehr Raum beansprucht, da das Band 14 mit den Abschnitten 1d, 1e außen um die Bandführungsrolle 16 geführt werden muß.A comparison of the embodiment according to FIGS. 1 and 2 with FIGS. 3 and 4 shows that the embodiment according to FIGS. 3 and 4 takes up a little more space, since the belt 14 with the sections 1d, 1e must be guided around the outside of the belt guide roller 16 .

Eine besonders vorteilhafte Ausführungsform zeigen Fig. 5 und 6, bei denen anstelle von oberen und unteren Bändern lediglich ein einziges Band verwendet wird. Auch wird hier eine andere Anordnung der Exzenter vorgeschlagen. Im Gegensatz zu den vorbeschriebenen beiden Ausführungsbeispielen sind die Exzenter 22, 23 auf der Welle 21 nicht gegeneinander um 180° versetzt angeordnet, sondern liegen hintereinander.5 and 6 show a particularly advantageous embodiment, in which only a single band is used instead of upper and lower bands. Another arrangement of the eccentrics is also proposed here. In contrast to the two exemplary embodiments described above, the eccentrics 22, 23 on the shaft 21 are not offset from one another by 180 °, but lie one behind the other.

Zur Unterscheidung der gleichartigen Bauteile und Bandabschnitte wird bei der Darstellung gemäß Fig. 5 und 6 den Bezugszeichen jeweils eine 2 bzw. 3 vorausgestellt.To differentiate between similar components and strip sections, the reference numerals are preceded by a 2 and 3 respectively in the illustration according to FIGS. 5 and 6.

Die von rechts in die Verzögerungsstrecke A einlaufenden Exemplare E werden bei der Maximalgeschwindigkeit dieses Bandabschnittes übernommen und anschließend in der bereits beschriebenen Weise verzögert. Der Bandabschnitt 2a gelangt um eine vordere, das heißt in der Ebene des vorderen Exzenters 23 liegende Bandführungsrolle 25, wonach der Bandabschnitt 2b dem vorderen Exzenter 23 zugeführt wird.The specimens E entering the delay line A from the right are taken over at the maximum speed of this section of tape and then decelerated in the manner already described. The belt section 2a passes around a front belt guide roller 25, that is to say in the plane of the front eccentric 23, after which the belt section 2b is fed to the front eccentric 23.

Hinter dem Exzenter 23 gelangt der Bandabschnitt 2c zu einer Bandführungsrolle 26, die ebenfalls in der Ebene des Exzenters 23 liegt. Der Versatz erfolgt über den Bandabschnitt 2d zu der in der Ebene des Exzenters 22 liegenden Bandführungsrolle 27. Hinter der Bandführungsrolle 27 gelangt dann der Bandabschnitt 2e zu dem hinteren Exzenter 22. Nach teilweiser Umschlingung läuft der Bandabschnitt 2f zu der in der Ebene des Exzenters 22 liegenden Bandführungsrolle 29 und anschließend zu der Bandführungsrolle 28 in der gleichen Ebene als Bandabschnitt 2g. Zur besseren Unterscheidung wurden die in der Ebene des hinteren Exzenters 22 liegenden Teile und Bandabschnitte mit einem Sternchen versehen. Die Rückführung des Bandes 24 erfolgt im Bandabschnitt 2a, da die Bandführungsrolle 30 wieder in der Ebene des Exzenters 23, das heißt in der vorderen Ebene, liegt.Behind the eccentric 23, the band section 2c arrives at a band guide roller 26, which is also in the plane of the eccentric 23. The offset takes place via the belt section 2d to the belt guide roller 27 lying in the plane of the eccentric 22. Behind the belt guide roller 27, the belt section 2e then reaches the rear eccentric 22. After partial wrapping, the belt section 2f runs to the one lying in the plane of the eccentric 22 Tape guide roller 29 and then to the tape guide roller 28 in the same plane as the tape section 2g. For better distinction, the parts and band sections lying in the plane of the rear eccentric 22 have been marked with an asterisk. The tape 24 is returned in the tape section 2a, since the tape guide roller 30 is again in the plane of the eccentric 23, that is to say in the front plane.

Wie Fig. 5 zeigt, wird der untere Bandleitungsabschnitt 2i der Verzögerungsstrecke A zwischen den Bandführungsrollen 30 und 31 gebildet. Zur Bildung des oberen Bandabschnittes 2n der Verzögerungsstrecke A muß dann eine Rückführung, d. h. eine Umführung um die gesamte Anordnung, erfolgen. Diese verläuft als Bandabschnitt 2j um die Bandführungsrolle 32, als Bandabschnitt 2k um die Bandführungsrolle 33, als Bandabschnitf 21 um die Bandführungsrolle 34 und als Bandabschnitt 2m um die Bandführungsrolle 35. Der obere Bandabschnitt 2n der Verzögerungsstrecke A wird zwischen den Bandführungsrollen 35 und 25 gebildet. Dabei liegen alle Bandführungsrollen 30 bis 35 in der gleichen Ebene. Wie bereits beschrieben, werden durch Rotation der Exzenter 22, 23 um die Welle 21 eine Verzögerung und eine Beschleunigung der Bandabschnitte 2i und 2n in der Verzögerungsstrecke A erreicht, wobei automatisch der erforderliche Wegausgleich durch die Doppelexzenter 22, 23 gewährleistet ist.As shown in FIG. 5, the lower band line section 2i of the delay line A is formed between the band guide rollers 30 and 31. To form the upper band section 2n of the delay line A, a return, d. H. a detour around the entire arrangement. This runs as a band section 2j around the band guide roller 32, as a band section 2k around the band guide roller 33, as a band section 21 around the band guide roller 34 and as a band section 2m around the band guide roller 35. The upper band section 2n of the delay line A is formed between the band guide rollers 35 and 25. All tape guide rollers 30 to 35 are in the same plane. As already described, rotation of the eccentrics 22, 23 around the shaft 21 results in a deceleration and an acceleration of the belt sections 2i and 2n in the deceleration section A, the required path compensation being automatically ensured by the double eccentrics 22, 23.

Es versteht sich, daß, quer zur Transportrichtung der Exemplare E, in der gleichen Ebene mindestens zwei Bänder nebeneinander verwendet werden, um eine sichere Erfassung und Verzögerung der Exemplare E zu gewährleisten.It goes without saying that, at right angles to the transport direction of the specimens E, at least two tapes are used next to one another in the same plane in order to ensure reliable detection and deceleration of the specimens E.

In Fig. 7 ist schematisch eine Umlenkrolle 15 bzw. 18 angedeutet, die mit nicht näher bezeichneten Borden an beiden Seiten ausgestattet ist. Derartige Rollen gewährleisten eine sichere Führung der zum Einsatz kommenden Bänder.In Fig. 7, a deflection roller 15 and 18 is indicated schematically, which is equipped with unspecified rims on both sides. Such rollers ensure a safe guidance of the tapes used.

Es versteht sich, daß unter dem Ausdruck « Exzenter auch « exzenterähnliche Kurven zu verstehen sind. Die beiden verwendeten Exzenter müssen nicht unbedingt identische Kurven sein, sondern können auch so gerechnet werden, daß keine Relativbewegungen auftreten.It goes without saying that the expression "eccentric" also means eccentric-like curves. The two eccentrics used do not necessarily have to be identical curves, but can also be calculated so that no relative movements occur.

Anhand der Fig. 8 bis 10 wird ein weiteres Ausführungsbeispiel beschrieben.Another exemplary embodiment is described with reference to FIGS. 8 to 10.

Fig. 8 zeigt eine Bandverzögerungsstrecke für einen Falzapparat, in welche gefalzte oder zu falzende Exemplare einführbar sind. Die Bänder dieses Bandleitungssystems sind in der Weise mit variabler Geschwindigkeit antreibbar, daß bei der Übernahme eines Exemplares die Bänder bzw. Bänderabschnitte mit einer hohen Geschwindigkeit laufen, wonach diese nach Erfassen der Exemplare ihre Geschwindigkeit verringern.Fig. 8 shows a tape delay line for a folder into which folded or to be folded copies can be inserted. The tapes of this tape line system can be driven at a variable speed in such a way that when a copy is taken over, the tapes or tape sections run at a high speed, after which they reduce their speed after the copies have been detected.

Die von rechts in die Verzögerungsstrecke AO einlaufenden Exemplare EO werden bei der Maximalgeschwindigkeit dieses Bandabschnittes übernommen und, wie bereits erwähnt, verzögert, so daß beispielsweise bei Minimalgeschwindigkeit eine Falzung nach unten weg erfolgen kann. Der Bandabschnitt 20a läuft zu einer vorderen, d. h. in der Ebene eines vorderen Exzenters bzw. Kurvenscheibe 230 liegenden Bandführungsrolle 250, wonach er als Bandabschnitt 20b dem vorderen Exzenter 230 zugeführt wird. Hinter dem Exzenter 230 gelangt der Bandabschnitt 20c zu einer Bandführungsrolle 260, die ebenfalls in der Ebene des Exzenters 230 liegt. Der Ebenenversatz erfolgt im Bandabschnitt 20d zu der in der Ebene des hinteren Exzenters bzw. Kurvenscheibe 220 liegenden Bandführungsrolle 270. Nach der Bandführungsrolle 270 läuft dann der Bandabschnitt 2e direkt zu dem hinteren Exzenter 220. Nach teilweiser Umschlingung des Exzenters 220 läuft das Band 240 als Abschnitt 20f zu der in der Ebene des Exzenters 220 liegenden Bandführungsrolle 290 und anschließend zu der Bandführungsrolle 280 in der gleichen Ebene als Bandabschnitt 20g. Zur besseren Unterscheidung wurden die in der Ebene des hinteren Exzenters 220 liegenden Teile und Bandabschnitte mit einem Sternchen versehen. Die Rückführung des Bandes in die vordere Ebene 240 erfolgt über den Bandabschnitt 20b, da die Bandführungsrolle 300 wieder in der Ebene des Exzenters 230, das heißt in der vorderen Ebene, liegt.The copies EO entering the delay line AO from the right are taken over at the maximum speed of this strip section and, as already mentioned, decelerated so that, for example, a fold can be made downwards at the minimum speed. The belt section 20a runs to a front, i.e. H. in the plane of a front eccentric or cam disk 230 lying tape guide roller 250, after which it is fed to the front eccentric 230 as a band section 20b. Behind the eccentric 230, the band section 20c arrives at a band guide roller 260, which is also in the plane of the eccentric 230. The plane offset takes place in the band section 20d to the band guide roller 270 lying in the plane of the rear eccentric or cam disc 220. After the band guide roller 270, the band section 2e then runs directly to the rear eccentric 220. After the eccentric 220 is partially wrapped around the band 240, the band 240 runs as a section 20f to the tape guide roller 290 lying in the plane of the eccentric 220 and then to the tape guide roller 280 in the same plane as the tape section 20g. For better distinction, the parts and band sections lying in the plane of the rear eccentric 220 have been marked with an asterisk. The band is returned to the front plane 240 via the band section 20b, since the band guide roller 300 is again in the plane of the eccentric 230, that is to say in the front plane.

Wie Fig. 8 erkennen läßt, wird der untere Bandleitungsabschnitt 20i der Verzögerungsstrecke AO zwischen den Bandführungsrollen 300 und 310 gebildet. Zur Bildung des oberen Bandabschnittes 20n der Verzögerungsstrecke AO muß dann eine Rückführung, das heißt eine Umführung um die gesamte Anordnung, erfolgen. Diese verläuft als Bandabschnitt 20j um die Bandführungsrolle 320, als Bandabschnitt 20k um die Bandführungsrolle 330, als Bandabschnitt 201 um die Bandführungsrolle 340 und als Bandabschnitt 20m um die Bandführungsrolle 350. Der obere Bandabschnitt 20n der Verzögerungsstrecke AO wird zwischen den Bandführungsrollen 350 und 250 gebildet. Dabei liegen alle Bandführungsrollen 300 bis 330 in der gleichen Ebene. Bei Rotation der Exzenter 220 und 230 um die Welle 210 erfolgen eine Verzögerung und Beschleunigung der Bandabschnitte 20i und 20n in der Verzögerungsstrecke A0. Es versteht sich, daß quer zur Transportrichtung der Exemplare EO in der gleichen Ebene mindestens zwei Bänder nebeneinander verwendet werden, um eine sichere Erfassung und Verzögerung der Exemplare EO zu gewährleisten.As can be seen in FIG. 8, the lower band line section 20i of the delay line AO is formed between the band guide rollers 300 and 310. To form the upper band section 20n of the delay line AO, a return, that is to say a detour around the entire arrangement, must then take place. This runs as a belt section 20j around the belt guide roller 320, as a belt section 20k around the belt guide roller 330, as a belt section 201 around the belt guide roller 340 and as a belt section 20m around the belt guide roller 350. The upper belt section 20n of the delay line AO is formed between the belt guide rollers 350 and 250. All tape guide rollers 300 to 330 are on the same level. When the eccentrics 220 and 230 rotate about the shaft 210, the belt sections 20i and 20n are decelerated and accelerated in the deceleration section A0. It goes without saying that at least two bands are used next to one another transversely to the direction of transport of the copies EO in the same plane in order to ensure reliable detection and delay of the copies EO.

Im Gegensatz zu der Vorrichtung gemäß Fig. 1 bis 7 erfolgt die Führung des Bandabschnittes 20c von dem vorderen Exzenter 230 nicht unmittelbar zu der Bandführungsrolle 260, sondern über eine ein Bandlängenausgleichselement bildende Rolle 360, die z. B. über ein Hubelement 400 in Richtung des Pfeiles bewegbar ist, so daß in der erfindungsgemäßen Ausbildung der Außenkontur der Exzenter 220, 230 ein Ausgleich der rhythmisch auftretenden Bandlängendifferenzen erfolgen kann. Anstelle eines die Rolle 360 tragenden Kolbens kann auch ein Exzenter verwendet werden, dessen Außenkontur und Exzentrizität so festgelegt sind, daß er die auftretenden Bandlängendifferenzen ausgleichen kann.In contrast to the device according to FIGS. 1 to 7, the belt section 20c is not guided from the front eccentric 230 directly to the belt guide roller 260, but via a roller 360 forming a belt length compensation element, which e.g. B. is movable via a lifting element 400 in the direction of the arrow, so that in the inventive design of the outer contour of the eccentric 220, 230, a compensation of the rhythmically occurring band length differences can take place. Instead of a piston carrying the roller 360, an eccentric can also be used, the outer contour and eccentricity of which are fixed in such a way that it can compensate for the band length differences that occur.

Wie aus Fig. 8 ersichtlich, weisen die beiden verwendeten Exzenter 220, 230, die spiegelbildlich zu einer gemeinsamen Mittellinie MO angeordnet sind, um geringste Bandlängendifferenzen zu erhalten, eine, jeweils von der Kreisform abweichende Außenkontur auf. Die eine Hälfte der Außenkontur weist im dargestellten Ausführungsbeispiel jeweils etwa die Form einer isometrischen und die andere Hälfte die Form einer dimetrischen Ellipse auf. Dadurch ergeben sich in den Bänderabschnitten 20i und 20n in der Bandverzögerungsstrecke AO bei der Rotation der Exzenter 220, 230 sinusförmige Verzögerungen und sinusförmige Beschleunigungen. Das Maß der Exzentrizität XO der Exzenter 220, 230 hängt vom Verhältnis Maximalgeschwindigkeit zu Minimalgeschwindigkeit ab. Theoretisch würde sich eine Minimalgeschwindigkeit von 0 ergeben, wenn dieses Maß dem halben Durchmesser entspricht, d. h. wenn die beiden Exzenter 220, 230 um einen Punkt rotieren würden, der auf ihrer Peripherie liegt. In der Praxis reicht jedoch das Verhältnis von etwa 4 : 1 aus, das heißt, daß in diesem Fall der gemeinsame Rotationsmittelpunkt etwa auf der Höhe des unteren Brennpunktes der beiden Exzenter 220, 230 mit dem etwa ellipsenförmigen Kurvenverlauf liegt.As can be seen from FIG. 8, the two eccentrics 220, 230 used, which are arranged in mirror image to a common center line MO in order to obtain the smallest band length differences, each have an outer contour that deviates from the circular shape. In the exemplary embodiment shown, one half of the outer contour each has approximately the shape of an isometric and the other half has the shape of a dimetric ellipse. This results in sinusoidal decelerations and sinusoidal accelerations in the band sections 20i and 20n in the band delay line AO during the rotation of the eccentrics 220, 230. The measure of the eccentricity XO of the eccentrics 220, 230 depends on the ratio of maximum speed to minimum speed. Theoretically, a minimum speed of 0 would result if this measure corresponds to half the diameter, i. H. if the two eccentrics 220, 230 would rotate about a point lying on their periphery. In practice, however, the ratio of approximately 4: 1 is sufficient, which means that in this case the common center of rotation is approximately at the level of the lower focal point of the two eccentrics 220, 230 with the approximately elliptical curve shape.

Die Figuren 9 und 10 zeigen, wie durch Abwicklung eines Exzenters dessen Kontur empirisch ermittelbar ist, mit deren Hilfe die gewünschte sinusförmige Verzögerung und Beschleunigung in der Verzögerungsstrecke möglich sind. In Fig. 2 ist für den Bereich von 0° bis 180° die Entwicklung der Außenkontur 380 in 30°-Schritten der einen Hälfte des erfindungsgemäßen Exzenters dargestellt, wobei dieser von 0° bis 180° in Pfeilrichtung gedreht wird. Die Außenkontur 390 hat in Fig. 9 noch keinen Einfluß. Die zurückgelegte Wegstrecke in dem Verzögerungsabschnitt AO zwischen zwei nicht näher bezeichneten Bandrollen ist jeweils für 30° aufgetragen. Fig. 9 läßt deutlich erkennen, daß über den Bereich von 0 bis 180° des sich in Pfeilrichtung von rechts nach links bewegenden Bandabschnittes der Verzögerungsstrecke AO eine sinusförmige Verlangsamung ergibt. Fig. 10 dagegen zeigt die Entwicklung der sinusförmigen Beschleuni.gung mit Hilfe des Kurvenbereiches 390 zwischen 180° und 360° in der Verzögerungsstrecke A. Wie bei Fig. 9 ist die lineare Bandbewegung jeweils wieder für einen Drehwinkel von 30° in der Verzögerungsstrecke AO abgetragen.FIGS. 9 and 10 show how the contour of an eccentric can be empirically determined by processing an eccentric, with the aid of which the desired sinusoidal deceleration and acceleration in the deceleration path are possible. 2 shows the development of the outer contour 380 in 30 ° steps of one half of the eccentric according to the invention for the range from 0 ° to 180 °, wherein this is rotated from 0 ° to 180 ° in the direction of the arrow. The outer contour 390 has no influence in FIG. 9 yet. The distance traveled in the deceleration section AO between two belt rolls, not specified, is in each case plotted for 30 °. Fig. 9 clearly shows that over the range of 0 to 180 ° of the band section moving in the direction of the arrow from right to left, the delay line AO results in a sinusoidal slowdown. 10 shows the development of the sinusoidal acceleration with the aid of the curve area 390 between 180 ° and 360 ° in the deceleration distance A. As in FIG. 9, the linear belt movement is again removed for a rotation angle of 30 ° in the deceleration distance AO.

Da in Fig. 9 der Kurvenverlauf 380, also die linke Hälfte der Kontur des Exzenters, und in Fig. 10 der Kurvenverlauf 390, das heißt die rechte Hälfte der Kontur, für die Entwicklung der sinusförmigen Verzögerung bzw. Beschleunigung verantwortlich sind, wurden jeweils die Bereiche voll ausgezeichnet, während die nicht unmittelbar beteiligten Bereiche, das sind in Fig. 2 der Bereich 390 und in Fig. 10 der Bereich 380, gestrichelt dargestellt sind.Since in FIG. 9 the curve 380, that is the left half of the contour of the eccentric, and in FIG. 10 the curve 390, that is the right half of the contour, are responsible for the development of the sinusoidal deceleration or acceleration, respectively Areas fully marked, while the areas not directly involved, that is the area 390 in FIG. 2 and the area 380 in FIG. 10, are shown in broken lines.

Durch die spiegelbildliche Anordnung der Exzenter 220, 230 zu einer gemeinsamen Linie MO ergibt sich ein minimaler, auszugleichender Wegunterschied im Bandabschnitt 20c, so daß die verwendeten Bandlängenausgleichselemente den geringsten Hub aufführen müssen.The mirror-image arrangement of the eccentrics 220, 230 to form a common line MO results in a minimal path difference to be compensated for in the band section 20c, so that the band length compensation elements used have to perform the smallest stroke.

Claims (13)

1. Delay section for a folding apparatus, in which folded copies, or copies to be folded, can be inserted into a belt guide system forming the delay section, the belts of which system (4, 14, 24) can be driven at variable speed in such a way that when a copy is being picked up, the belts (belt sections) run at high speed, and after they have gripped the copies the belts reduce their speed, characterised in that the belts (4, 14, 24) are guided at least partially round equally sized eccentrics lying in two planes and arranged on a common shaft (1, 11, 21), and which have the same eccentricity (X), whereby the end (c, 1 c, 2c) coming from one eccentric (2, 13, 23) is deflected into the plane of the other eccentric (3, 12, 22) by a first guide roller (5, 15, 27), and the belt (4, 14, 24) is guided back again by a second guide roller (6, 18, 30) lying in front of or behind the delay section (A).
2. Delay section according to claim 1, characterised in that on both sides of the delay section (A), belt guide rollers (6, 7 ; 17, 18 ; 25, 35) are arranged in the same plane.
3. Delay section according to claim 1 or 2, characterised in that when the belt (14) is deflected from the plane of one eccentric (12) into the plane of the other eccentric (13), the belt section (1b. 1c) running over the guide roller (15) is rotated twice by 180° into itself (Fig. 4).
4. Delay section according to claim 1 to 3, characterised in that the eccentrics (2, 3 ; 12, 13) are offset by 180° to each other on the axle (11, 11').
5. Delay section according to one of the preceding claims, characterised in that on both sides of the delay section (A, Fig. 1, 3) two identical belt systems (4, 4' ; 14, 14') are arranged on top of each other.
6. Delay section according to claim 1, characterised in that the eccentrics (22, 23, Fig. 5) are arranged congruently on the shaft (21) one behind the other.
7. Delay section according to claim 6, characterised in that the delay section (Fig. 5, A) incorporates a single belt (24), wherein the lower belt section (2i) is formed by guiding the belt (24) round the entire eccentric- and guide roller arrangement over guide rollers (31, 32, 33, 34, 35) lying in the same plane.
8. Delay section according to one of the preceding claims, characterised in that transversely to the travel direction of the belts (4, 4' ; 14' ; 24) at least two belt guides are arranged next to each other.
9. Delay section according to claim 1, characterised in that the cam plates (220, 230) have an external contour which deviates from circularity, so that in the delay section (AO) the belt sections (20i, 20n) running between these are delayed and accelerated rhythmically sinusoidally, and in that in the belt section (20c), in which the belt (240) is guided from the plane of one cam plate (220) into the plane of the other cam plate (230), there is arranged a belt length compensating element (360).
10. Delay section according to claim 9, characterised in that the belt length compensating element (360) is a belt guide roller actuatable by a lifting cylinder (400).
11. Delay section according to claim 9, characterised in that the belt length compensating element (360) is a rotating cam plate.
12. Delay section according to claim 9, characterised in that the cam plates (220, 230) are arranged on a shaft (210) in mirror-image fashion with respect to a common centre line (MO).
13. Delay section according to one of the preceding claims 9 to 12, characterised in that one half respectively of the circumference of each cam plate (220, 230) has approximately the shape of an isometric ellipse, and the other half has approximately the shape of a dimetric ellipse, and the common rotation centre of both cam plates (220, 230) is approximately on a level with an elliptical focal point.
EP84110358A 1983-09-12 1984-08-31 Delay section for a folding apparatus Expired EP0141136B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19833332809 DE3332809C2 (en) 1983-09-12 1983-09-12 Belt delay section for a folder
DE3332809 1983-09-12
DE3338814 1983-10-26
DE19833338814 DE3338814C2 (en) 1983-10-26 1983-10-26 Belt delay section for a folder

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EP0141136A1 EP0141136A1 (en) 1985-05-15
EP0141136B1 true EP0141136B1 (en) 1986-12-30

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DE2750792C3 (en) * 1977-11-14 1981-09-03 Albert-Frankenthal Ag, 6710 Frankenthal Folder
DE3049595A1 (en) * 1980-12-31 1982-07-08 Albert-Frankenthal Ag, 6710 Frankenthal TAPE LINE FOR TRANSPORTING AND SLOWING DOWN FOLDED PRODUCTS
DE3321811C2 (en) * 1983-06-16 1986-01-02 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Folder for web-fed rotary printing machines

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US4601387A (en) 1986-07-22
EP0141136A1 (en) 1985-05-15

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