EP0366038B1 - Device for the zigzag folding and stacking of a web of material - Google Patents

Device for the zigzag folding and stacking of a web of material Download PDF

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Publication number
EP0366038B1
EP0366038B1 EP89119616A EP89119616A EP0366038B1 EP 0366038 B1 EP0366038 B1 EP 0366038B1 EP 89119616 A EP89119616 A EP 89119616A EP 89119616 A EP89119616 A EP 89119616A EP 0366038 B1 EP0366038 B1 EP 0366038B1
Authority
EP
European Patent Office
Prior art keywords
clamping
stack
arrangement
deflecting
supporting element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89119616A
Other languages
German (de)
French (fr)
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EP0366038A2 (en
EP0366038A3 (en
Inventor
Willi Felix
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.)
JOS. HUNKELER AG PAPIERVERARBEITUNGSMASCHINEN
Original Assignee
Jos Hunkeler AG Papierverarbeitungsmaschinen
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Filing date
Publication date
Application filed by Jos Hunkeler AG Papierverarbeitungsmaschinen filed Critical Jos Hunkeler AG Papierverarbeitungsmaschinen
Publication of EP0366038A2 publication Critical patent/EP0366038A2/en
Publication of EP0366038A3 publication Critical patent/EP0366038A3/en
Application granted granted Critical
Publication of EP0366038B1 publication Critical patent/EP0366038B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11231—Fan-folded material or zig-zag or leporello

Definitions

  • the present invention relates to a device for zigzag folding and stacking a material web according to the preamble of claim 1.
  • Such a device is known for example from DE-OS 33 44 260.
  • This has a carriage which can be moved back and forth between two end positions, on which two deflection rollers delimiting a passage opening for a material web fed in from below are freely rotatably mounted. It has two band-shaped support elements, the load-bearing strands of which are each guided from a fixed attachment point to the respective deflection rollers.
  • Each support element is deflected by the associated deflecting roller and then guided in an S-shape via a first deflecting roller which is rotatably mounted on the slide and then via a second, stationary, freely rotatably supported deflecting roller, each to a further fixed fastening point.
  • the change in length of the section of the support element between the two deflection rollers compensates for the forced extension or shortening of the relevant load-bearing dream.
  • the material web fed from below is folded in a zigzag shape and stacked to form a stack resting on the support elements and building up from below. As soon as the stack has reached the desired height, the material web in the stack is cut by hand along a fold line and lifted off the top of the stack. In the meantime, the folding and stacking of the supplied material web continues. For the subsequent further processing in a high-speed processing device such as a tearing or cutting device, the folded material webs of the individual stacks are connected again.
  • a high-speed processing device such as a tearing or cutting device
  • the present invention is based on the object of creating a device according to the preamble of claim 1, which makes it possible to fold material webs fed into one another in a time-saving and labor-saving manner and largely avoid manual labor.
  • the endlessly designed support element is used when folding and stacking the material web held by means of a stationary holding element. It is thus used during folding and stacking to apply the material web to the stack to be formed. As soon as a finished stack is formed, the holding element releases the support element, so that it is driven in a rotating manner by drive means for conveying the finished stack away. When conveying away, the material web is drawn around the conveyor section of the finished stack. When the holding element is activated again and the drive means are switched off, the formation of a new stack can now be started without the material web having to be separated. Since the switching from folding and stacking to conveying away and back again can be done very quickly, the processing process of the material web is interrupted at most for a short time. The incoming continuous material web is thus automatically folded and stacked into stacks, which are connected to one another via the material web, without the need to glue material web sections.
  • the movement of the carriage is used to drive the endless support element for conveying away the finished stack.
  • a separate drive for the support element is therefore not necessary.
  • two clamping arrangements are provided on the slide, which can be activated alternately when the finished stack is removed.
  • first clamping arrangement When the first clamping arrangement is activated, the load-bearing dream of the endless one Support element firmly connected to the slide, while when the second clamping arrangement is activated, the supporting strand of the support element is moved in the opposite direction with respect to the direction of movement of the slide. The finished stacks are thus conveyed away regardless of the direction of movement of the carriage.
  • the clamping device can be brought into action on the deflecting arrangement or the second deflecting roller and the clamping arrangement on the respective deflecting element or the first deflecting roller in order to clamp the endless support element in place or with the carriage.
  • the support element is connected to the deflection arrangement or the deflection roller and to the deflection element or the first deflection roller without slippage. The action of the clamping device and the clamping arrangement on the support element is thus indirect.
  • the device shown in Figures 1 to 5 has a frame 10 which is only partially shown in the figures.
  • a carriage 12 is slidably guided, which can be moved back and forth in the direction of arrows A and B.
  • the carriage 12 is shown in its left end position, while the right end position is indicated by dashed lines and designated 12 '.
  • the carriage 12 is shown in its right end position 12 ', while in Figure 4 the left end position is indicated by dashed lines.
  • the carriage 12 has a frame 14 on which two deflecting rollers 16, 18 are freely rotatably mounted in the central region.
  • the slide 12 In the front and rear area of the slide 12, viewed in the direction of movement A of the slide 12, are in the frame 14 two deflection rollers 20, 22 of length compensation arrangements 23, 23 'freely rotatable.
  • the axes of rotation of the two deflection rollers 16, 18 and deflection rollers 20, 22 mounted in the slide frame 14 run parallel to one another and at right angles to the direction of movement A, B of the slide 12.
  • the opposite deflection rollers 16, 18 define a passage opening 24 between them which is essentially at right angles to Direction of movement A, B of the carriage 12 extends.
  • a flexible band 30 or 32 is guided in an S-shape over these deflecting rollers and deflecting rollers 16, 20, 26 and 18, 22, 28.
  • a plurality of belts arranged next to one another can also be provided, which are guided in the same way as the belt 30 or 32.
  • the band 30 is of finite length and is fixed at its ends to the mounting points on the frame 10 at 34 and 36.
  • Band 32 is endless formed and additionally guided around two rollers 38, 40 rotatably mounted on the frame 10.
  • a first section 30a or 32a of the belts 30, 32 runs from the one fastening point 34 or roller 40 in the direction of movement A, B of the carriage 12 above the latter to the deflecting rollers 16 or 18.
  • a second belt section 30b or 32b, which during the slide displacement maintains its length runs approximately parallel to the first belt section 30a or 32a from the deflection roller 16, 18 to the first deflection roller 20, 22.
  • the adjoining belt section 30c or 32c runs from the deflection roller 20 or 22 to the stationary deflection roller 26 or 28.
  • the belt sections 30d and 32d lie between the deflection rollers 26 and 28 and the second fastening point 36 and roller 38, respectively. These band sections 30d and 32d also do not change their length during the carriage movement.
  • the band sections 30c, 30d and 32c, 32d likewise run essentially parallel to the first band section 30a and 32a.
  • the section of the endless belt 32 lying between the two rollers 38 and 40 is designated 32e.
  • a symbolically illustrated stationary clamping device 42 In the area between the two rollers 36, 38 there is provided a symbolically illustrated stationary clamping device 42, the clamping member 43 of which in a clamping position shown in FIGS. 1, 4 and 5, in which it clamps the belt section 32e between itself and the frame 10 shown in Figures 2 and 3 and with 43 'designated rest position and can be transferred back.
  • clamping arrangements 44 and 46 are fastened to the slide frame 14.
  • the first clamping arrangement 44 is shown enlarged in FIG. 6 and the second clamping arrangement 46 in FIG.
  • Each of the two clamping arrangements 44, 46 has a clamping element 48 or 50 which, in the direction of the double arrows C and D, moves from a rest position shown in FIGS. 6 and 7 and 1, 4 and 5 to a contact with the belt 32 and with 48 'Or 50' shown clamping position can be transferred, as shown in Figures 2 and 3. If the arrow shown in the clamping element 48, 50 is directed away from the band 32, the clamping element 48, 50 is in the rest position.
  • the clamping elements 48, 50 are transferred into their clamping positions 48 ', 50'.
  • the clamping element 48 clamps the band section 32c between itself and the first deflection roller 22, which leads to the band 32 standing still with respect to the carriage 12.
  • the clamping element 50 clamps the band section 32d between itself and a stop member 52 also fastened to the slide frame 14.
  • the first band section 32a moves in the direction of the arrow B when the carriages 12 are moving in the direction of the arrow A.
  • a further stop (not shown) can be provided, but this must be designed such that it can be brought out of the area of the stack 56, 56a, 56b, 56c.
  • this stop 54 and, if appropriate, the further stop are not absolutely necessary, since the slide movement does not cause any displacement thereof during the formation of stacks 56, 56a, 56b, 56c.
  • Each stack 56, 56a, 56b, 56c is formed by superimposed sections 58 of an endless material web 60, which can be, for example, a paper web, as shown in FIG. 1.
  • This material web 60 is folded at the fold points 62. These fold points 62 are defined by perforations 64 which are arranged at regular intervals A and run at right angles to the longitudinal extent of the material web 60.
  • the material web 60 is guided from below through the passage opening 24 to the top of the belts 30 and 32, respectively.
  • a backstop (not shown) for the material web 60 can be provided below the passage opening 24.
  • a pressing element 66 is shown which can be lowered in the direction of arrow E onto the stack 56, 56a, 56b, 56c or can be lifted off the stack.
  • the reciprocation of the carriage 12 is generated by a crank mechanism 68.
  • This has a rocker arm 70 which is pivotally mounted at one end about an axis 70a and acts on the slide frame 14 at the other end.
  • This rocker arm 70 is articulated connected to a drive lever 72 which is eccentrically attached to a drive wheel 74 at the other end. The latter is driven in rotation by a motor 76.
  • the orbital movement of the drive wheel 74 results in a known swinging of the rocking lever 70 and thus a corresponding back and forth movement of the slide 12.
  • a conveying device 78 for conveying the finished stacks 56 away in the direction of the arrow F.
  • 80 denotes a light barrier which is provided above the belt 32 and is arranged offset twice to the left with respect to the stop 54 by the distance a.
  • the generally known drive arrangements (not shown) for the clamping device 42, the clamping arrangements 44, 46, the pressing element 66 and the conveying device 78, as well as the motor 76 and the light barrier 80 are connected to a controller 84 via lines 82 indicated by broken lines. This controls the entire device during the folding and stacking of the material web 60 and during the conveying away of the finished stacks 56, 56a, 56b, 56c resting on the load-bearing strand 32a or the conveying device 78.
  • FIG. 1 shows the first stack 56 to be formed during the folding and stacking process and FIG. 2 shows the finished stack 56.
  • 3 shows the position of the stack 56 after the first stroke of the carriage 12 in the direction of arrow B for conveying away the stack 56.
  • 4 is the second finished Stack 56a in the position in which formation of the third stack 56b begins; stack 56a is shown partially pushed onto first stack 56.
  • 5 the three finished stacks 56, 56a, 56b are shown pushed onto one another, the stack 56b being separated from the stop 54 by twice the distance a; the fourth stack 56c is not yet finished.
  • FIG. 8 shows a further embodiment of the device according to the invention for zigzag folding and stacking of the material web 60 in a representation according to FIG. 5.
  • the devices shown in these two figures are constructed exactly the same, with the exception that in the device according to FIG 1 to 5 shown with the reference numerals 44 and 46 clamping arrangements with the clamping elements 48 and 50 are replaced by a conveyor drive 86.
  • the reference numerals in this FIG. 8 refer to exactly the same parts as in the device according to FIGS. 1 to 5. These are therefore only described to the extent necessary for the understanding of FIG. 8.
  • the conveyor drive 86 has a conveyor motor 88 which is operatively connected to the roller 38 via a chain drive 90.
  • the endless belt 32 is guided in a slip-resistant manner around the roller 38, runs between the clamping member 43 and the frame 10 to the roller 40, from there in a known manner to the deflection roller 18 and S-shaped around the deflection rollers 22 and 28 back to the roller 38 .
  • the other band 30 is attached at one end to the mounting point 34 on the frame 10, runs to the circulating roller 16 and from there S-shaped around the two deflection rollers 20 and 26 to the fastening point 36, where it is fixed to the frame 10 at the other end.
  • the two deflecting rollers 16 and 18 and the two deflecting rollers 20 and 22 are freely rotatably mounted on the carriage frame 14 of the carriage 12 which can be moved back and forth in the direction of arrows A and B by means of the motor 76 and crank mechanism 68.
  • Three finished stacks 56, 56a, 56b lie on the conveyor 78 and the belt 32, the stack denoted by 56c still being finished by zigzag folding of the material web 60 fed through the through opening 24 from below.
  • the bulges of those sections of the material web 60 which connect two successive stacks 56, 56a, 56b, 56c to one another are designated by 58a.
  • the pressing element 66 is shown lifted off the stack 56c.
  • the device described above according to FIGS. 1 to 7 works as follows: For folding and stacking the supplied material web 60, the clamping member 43 of the clamping device 42 is transferred into the clamping position and the clamping elements 48, 50 of the clamping arrangements 44, 46 are in their rest position, as is indicated in FIG. 1 by the corresponding arrows.
  • the carriage 12 When the carriage 12 is in the left end position, the beginning of the material web 67 fed from below through the passage opening 24 is brought into abutment against the stop 54 and the pressing element 66 is lowered, so that the first section 58 of the material web 60 between the belt 30 and the pressing element 66 is jammed.
  • the pressing element 66 is raised according to the stack height until it reaches a predetermined level Number of folding operations is lifted from the stack 56 and transferred to the upper end position in the direction of arrow E.
  • the change in the length of the section 30a, 32a which is forced during the stacking process is supplemented by the opposite change in length of the belt section 30c, 32c.
  • the carriage 12 is transferred to the right end position 12 ', as shown in FIG. 2.
  • the clamping member 43 of the clamping device 42 is transferred to the rest position designated 43 'and the band 32 is clamped by means of the clamping arrangement 44.
  • the finished stack 56 lying on the first belt section 32a is carried along until the carriage 12 is in its left end position shown in broken lines.
  • the clamping element 48 is moved into its rest position and the clamping element 50 of the clamping arrangement 46 into the clamping position 50 '.
  • the first band section 32a moves due to the entrainment of the band section 32d, against the arrow direction A, so that the finished stack 56 is moved further in the arrow direction 56' until the stack 56 releases the light barrier 80, analogously to that indicated in FIG. 4 with the finished stack 56a shown on the right. Since the stroke of the carriage 12 is slightly larger than the distance a and the light barrier 80 is twice the distance a from the stop 54, this is just before the carriage 12 has reached its right end position 12 '.
  • the clamping element 50 is also moved into its rest position and the clamping member 43 of the clamping device 42 into the clamping position, as a result of which the stack 56 is held stationary when the carriage 12 continues to move.
  • the stack 56 is displaced in the direction of arrow 56 ', this has pulled the material web 60 so that a perforation 64 comes to rest against the stop 54 when the folding process begins again.
  • the pressing element 66 is lowered in each case for the formation of a new stack 56 with the carriage 12 located in the right end position 12 '.
  • a further stack 56a is formed in a manner analogous to that described above. Since the pressing element 66 is lifted from the stack 56a to be formed after a few folding steps, the section 58 lying on top of this stack 56a is released so that the height difference can be compensated for, which leads to a bulge 58a of the two uppermost sections 58.
  • the stack 56a is now shifted to the left by twice the distance a, in a manner analogous to that described above and shown in FIGS. 2 and 3, as shown in FIG.
  • the first stack 56 formed is pushed onto the removal device 78, but as a result of the stationary removal device 78, the distance between the two stacks 56 and 56a is reduced.
  • another stack 56b is formed in an analogous manner, which is again shifted to the left by twice the distance a after completion.
  • the second stack 56a is pushed towards the first stack 56, and then the last stack 56b formed is pushed onto the stack 56a.
  • the removal device 78 is controlled by the control 84 in such a way that that the stacks 56, 56a ... are conveyed away against one another.
  • a further stack 56c is now formed, which is then also conveyed in the direction against the removal device 78.
  • the material web 60 is thus processed into a multiplicity of stacks 56, 56a, 56b, 56c without having to cut them open.
  • the finished stacks 56, 56a ... can be fed by means of the removal device 78 to a station which continuously processes them, for example a tearing or cutting unit or an inserting machine.
  • the stroke of the carriage 12 is adapted in a known manner, as is the light barrier 80 with a smaller distance a in the direction against the stop 54 and with a larger distance a against this direction moved so that the distance between the stop 54 and the light barrier 80 is twice the distance a.
  • Different stack heights can be achieved by performing fewer or more strokes of the slide 12.
  • a stack 56, 56a ... which has been formed is conveyed by more than twice the distance a in the direction against the removal device 78.
  • the only condition that must be met is that a fold 62 occurs at a perforation 64 during the next folding. This means that the distance between the stop 54 and the last formed stack 56, 56a, 56b is one integer multiple of the distance a.
  • the embodiment of the device shown in FIG. 8 functions exactly the same as the device according to the figures. 1 to 5.
  • the clamping member 43 is in its clamping position and holds the band 32 with respect to the frame 10.
  • the carriage 12 is transferred to the right end position 12 'shown in FIG. 8'. In this position, the carriage 12 is stopped and the clamping member 43 is transferred to the rest position 43 '(see FIG. 2).
  • the belt 32 is now driven in a rotating manner in the conveying direction F by means of the conveyor drive 86 until the last finished stack 56 has passed the light barrier 80.
  • a clamping device which acts on a roller 38, 40 or the second deflection roller 28.
  • the belt 32 would have to be connected to the corresponding roller 38 or 40 or the deflection roller 28 without slippage.
  • a clamping arrangement is provided which acts on the deflection roller 18 or on the deflection roller 22. The belt 32 must in turn be connected to this deflection roller 18 or deflection roller 22 in a slip-free manner.
  • the clamping element 43 can be dispensed with if the conveyor drive 86 is designed in such a way, for example provided with a brake or a corresponding conveyor motor 88, that it is able to hold the endless belt 32 in place when the material web 60 is flattened.

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  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Description

Die vorliegende Erfindung betrifft eine Einrichtung zum zickzackförmigen Falten und Stapeln einer Materialbahn gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to a device for zigzag folding and stacking a material web according to the preamble of claim 1.

Eine solche Einrichtung ist beispielsweise aus der DE-OS 33 44 260 bekannt. Diese weist einen zwischen zwei Endstellungen hin- und herbewegbaren Schlitten auf, an welchem zwei eine Durchtrittsöffnung für eine von unten zugeführte Materialbahn begrenzende Umlenkwalzen frei drehbar gelagert sind. Sie weist zwei bandförmige Auflageelemente auf, deren tragwirksamen Trume von je einer ortsfesten Befestigungsstelle zu den betreffenden Umlenkwalzen geführt sind. Jedes Auflageelement ist durch die zugeordnete Umlenkwalze umgelenkt und dann S-förmig über eine erste am Schlitten drehbar gelagerte und anschliessend über eine zweite, ortsfeste, frei drehbar gelagerte Umlenkrolle zu je einer weiteren ortsfesten Befestigungsstelle geführt. Bei der Hin- und Herbewegung des Schlittens gleicht die Längenänderung des Abschnittes des Auflageelementes zwischen den beiden Umlenkrollen jeweils die zwangsweise Verlängerung bzw. Verkürzung des betreffenden tragwirksamen Trumes aus. Die von unten zugeführte Materialbahn wird zickzackförmig gefaltet und zu einem auf den Auflageelementen aufliegenden und sich von unten aufbauenden Stapel gestapelt. Sobald der Stapel die gewünschte Höhe erreicht hat, wird im Stapel die Materialbahn von Hand entlang einer Falzlinie durchgetrennt und der obere Teil des Stapels abgehoben. Währenddessen geht das Falten und Stapeln der zugeführten Materialbahn weiter. Für die nachfolgende Weiterverarbeitung in einem schnellaufenden Verarbeitungsgerät wie z.B. einem Reiss- oder Schneidapparat werden die gefalzten Materialbahnen der einzelnen Stapel wieder miteinander verbunden. Dies geschieht durch Zusammenkleben des jeweils untersten Materialbahnabschnittes des einen Stapels mit dem obersten Materialbahnabschnitt des nächsten Stapels, wie das beispielsweise in der EP-OS 0 274 737 näher beschrieben ist. Auf diese Weise wird eine lange, zusammenhängende Materialbahn erhalten, bei der der zuerst der Falt- und Stapeleinrichtung zugeführte Materialbahnabschnitt auch wieder zuerst dem Verarbeitungsgerät zugeführt wird. Es ist nun offensichtlich, dass das Durchtrennen der Materialbahn im jeweils gebildeten Stapel und das spätere Verbinden der untersten und obersten Materialbahnabschnitte nacheinander gebildeter Stapel einen erheblichen Zeit- und Arbeitsaufwand erforderlich macht.Such a device is known for example from DE-OS 33 44 260. This has a carriage which can be moved back and forth between two end positions, on which two deflection rollers delimiting a passage opening for a material web fed in from below are freely rotatably mounted. It has two band-shaped support elements, the load-bearing strands of which are each guided from a fixed attachment point to the respective deflection rollers. Each support element is deflected by the associated deflecting roller and then guided in an S-shape via a first deflecting roller which is rotatably mounted on the slide and then via a second, stationary, freely rotatably supported deflecting roller, each to a further fixed fastening point. During the back and forth movement of the carriage, the change in length of the section of the support element between the two deflection rollers compensates for the forced extension or shortening of the relevant load-bearing dream. The material web fed from below is folded in a zigzag shape and stacked to form a stack resting on the support elements and building up from below. As soon as the stack has reached the desired height, the material web in the stack is cut by hand along a fold line and lifted off the top of the stack. In the meantime, the folding and stacking of the supplied material web continues. For the subsequent further processing in a high-speed processing device such as a tearing or cutting device, the folded material webs of the individual stacks are connected again. This is done by gluing together the bottom material web section of the one stack with the top material web section of the next stack, as is described in more detail, for example, in EP-OS 0 274 737. In this way, a long, coherent material web is obtained, in which the material web section first fed to the folding and stacking device is also first fed back to the processing device. It is now evident that the cutting of the material web in the stack formed in each case and the subsequent connection of the lowermost and uppermost material web sections of successively formed stacks requires a considerable amount of time and work.

Der Vorliegenden Erfindung liegt nun die Aufgabe zugrunde, eine Einrichtung gemäss Oberbegriff des Anspruchs 1 zu schaffen, welche es ermöglicht, zeit- und arbeitssparend und unter weitgehender Vermeidung von Handarbeit zugeführte Materialbahnen zu untereinander verbundene Stapel zu falten.The present invention is based on the object of creating a device according to the preamble of claim 1, which makes it possible to fold material webs fed into one another in a time-saving and labor-saving manner and largely avoid manual labor.

Diese Aufgabe wird durch die Merkmale des kennzeichnenden Teiles des Anspruchs 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.

Das endlos ausgebildete Auflageelement wird beim Falten und Stapeln der Materialbahn mittels eines ortsfesten Halteelementes festgehalten. Es dient somit beim Falzen und Stapeln zum Anlegen der Materialbahn an den zu bildenden Stapel. Sobald ein fertiger Stapel gebildet ist, gibt das Halteelement das Auflageelement frei, sodass dieses mittels Antriebsmitteln umlaufend angetrieben zum Wegfördern des fertigen Stapels dient. Beim Wegfördern wird die Materialbahn um die Förderstrecke des fertigen Stapels nachgezogen. Bei erneutem Aktivieren des Halteelementes und Ausschalten der Antriebsmittel kann nun die Bildung eines neuen Stapels begonnen werden, ohne dass die Materialbahn aufgetrennt werden muss. Da die Umschaltung von Falten und Stapeln auf Wegfördern und wieder zurück sehr schnell erfolgen kann, wird der Verarbeitungsprozess der Materialbahn höchstens kurzzeitig unterbrochen. Die ankommende kontinuierliche Materialbahn wird somit automatisch gefaltet und zu Stapeln aufgeschichtet, welche über die Materialbahn miteinander verbunden sind, ohne dass hiezu ein Verkleben von Materialbahnabschnitten nötig ist.The endlessly designed support element is used when folding and stacking the material web held by means of a stationary holding element. It is thus used during folding and stacking to apply the material web to the stack to be formed. As soon as a finished stack is formed, the holding element releases the support element, so that it is driven in a rotating manner by drive means for conveying the finished stack away. When conveying away, the material web is drawn around the conveyor section of the finished stack. When the holding element is activated again and the drive means are switched off, the formation of a new stack can now be started without the material web having to be separated. Since the switching from folding and stacking to conveying away and back again can be done very quickly, the processing process of the material web is interrupted at most for a short time. The incoming continuous material web is thus automatically folded and stacked into stacks, which are connected to one another via the material web, without the need to glue material web sections.

Bei einer besonders bevorzugten Ausbildungsform gemäss Anspruch 2 wird die Bewegung des Schlittens zum Antreiben des endlosen Auflageelementes zum Wegfördern der fertigen Stapel eingesetzt. Es ist somit ein separater Antrieb für das Auflageelement nicht notwendig.In a particularly preferred embodiment according to claim 2, the movement of the carriage is used to drive the endless support element for conveying away the finished stack. A separate drive for the support element is therefore not necessary.

Bei einer weiteren bevorzugten Ausbildungsform gemäss Anspruch 6 sind am Schlitten zwei Klemmanordnungen vorgesehen, die beim Wegführen der fertigen Stapel abwechslungsweise aktivierbar sind. Bei aktivierter erster Klemmanordnung ist der tragwirksame Trum des endlosen Auflageelementes fest mit dem Schlitten verbunden, während bei aktivierter zweiter Klemmanordnung der tragwirksame Trum des Auflageelementes bezüglich der Bewegungsrichtung des Schlittens in entgegengesetzter Richtung bewegt wird. Die fertigen Stapel werden somit unabhängig von der Bewegungsrichtung des Schlittens weggefördert.In a further preferred embodiment, two clamping arrangements are provided on the slide, which can be activated alternately when the finished stack is removed. When the first clamping arrangement is activated, the load-bearing dream of the endless one Support element firmly connected to the slide, while when the second clamping arrangement is activated, the supporting strand of the support element is moved in the opposite direction with respect to the direction of movement of the slide. The finished stacks are thus conveyed away regardless of the direction of movement of the carriage.

In einer weiteren Ausbildungsform gemäss Anspruch 8 ist die Klemmeinrichtung auf die Umlenkanordnung oder die zweite Umlenkrolle und die Klemmanordnung auf das betreffende Umlenkorgan oder die erste Umlenkrolle zur Einwirkung bringbar um das endlose Auflageelement ortsfest oder mit dem Schlitten festzuklemmen. Das Auflageelement ist in diesem Fall mit der Umlenkanordnung bzw. der Umlenkrolle und mit dem Umlenkorgan bzw. der ersten Umlenkrolle schlupffrei verbunden. Die Einwirkung der Klemmeinrichtung und der Klemmanordnung auf das Auflageelement erfolgt somit indirekt.In a further embodiment, the clamping device can be brought into action on the deflecting arrangement or the second deflecting roller and the clamping arrangement on the respective deflecting element or the first deflecting roller in order to clamp the endless support element in place or with the carriage. In this case, the support element is connected to the deflection arrangement or the deflection roller and to the deflection element or the first deflection roller without slippage. The action of the clamping device and the clamping arrangement on the support element is thus indirect.

Im Anspruch 11 ist ein bevorzugtes Verfahren zum Betrieb der Einrichtung nach Anspruch 6 angegeben.In claim 11, a preferred method for operating the device according to claim 6 is specified.

Weitere Ausbildungsformen sind in den weiteren abhängigen Ansprüchen definiert.Further forms of training are defined in the further dependent claims.

Die Erfindung wird nun anhand eines Ausführungsbeispiels näher beschrieben. Es zeigen rein schematisch:

Fig. 1 bis 5
eine Ausführungsform einer erfindungsgemässen Vorrichtung in Seitenansicht und teilweise im Schnitt bei verschiedenen Phasen der Stapelbildung,
Fig. 6 und 7
in vergrösserter Darstellung die beiden am Schlitten der Vorrichtung gemäss Fig. 1 bis 5 angeordneten Klemmanordnungen, und
Fig. 8
eine weitere Ausbildungsform der erfindungsgemässen Vorrichtung in Seitenansicht und teilweise im Schnitt.
The invention will now be described in more detail using an exemplary embodiment. It shows purely schematically:
1 to 5
an embodiment of an inventive device in side view and partially in section at different Phases of stacking,
6 and 7
in an enlarged view the two clamping arrangements arranged on the slide of the device according to FIGS. 1 to 5, and
Fig. 8
a further embodiment of the inventive device in side view and partially in section.

In den Figuren 1 bis 5 werden für die gleichen Teile die selben Bezugszeichen verwendet. In den Figuren 2 bis 5 sind diese aber nur soweit angegeben, als dies für das Verständnis der Figur und der Arbeitsweise der Vorrichtung notwendig ist.In Figures 1 to 5, the same reference numerals are used for the same parts. In Figures 2 to 5, however, these are only given to the extent necessary for understanding the figure and the mode of operation of the device.

Die in den Figuren 1 bis 5 gezeigte Vorrichtung weist ein Gestell 10 auf, das in den Figuren nur teilweise dargestellt ist. In diesem Gestell 10 ist ein Schlitten 12 verschiebbar geführt, der in Richung der Pfeile A und B translatorisch hin und her verschiebbar ist. In den Figuren 1 und 3 ist der Schlitten 12 in seiner linken Endlage gezeigt, während die rechte Endlage gestrichelt angedeutet und mit 12′ bezeichnet ist. In den Figuren 2, 4 und 5 ist der Schlitten 12 in seiner rechten Endlage 12′ gezeigt, während in der Figur 4 die linke Endlage gestrichelt angedeutet ist. Der Schlitten 12 weist einen Rahmen 14 auf, an welchem im Mittelbereich zwei Umlenkwalzen 16, 18 frei drehbar gelagert sind. Im in Bewegungsrichtung A des Schlitten 12 gesehen vorderen und hinteren Bereich des Schlittens 12 sind im Rahmen 14 zwei Umlenkrollen 20, 22 von Längenausgleichsanordnungen 23, 23′ frei drehbar gelagert. Die Drehachsen der im Schlittenrahmen 14 gelagerten beiden Umlenkwalzen 16, 18 und Umlenkrollen 20, 22 verlaufen parallel zueinander und rechtwinklig zur Bewegungsrichtung A, B des Schlittens 12. Die sich gegenüberliegenden Umlenkwalzen 16, 18 legen zwischen sich eine Durchtrittsöffnung 24 fest die im wesentlichen rechtwinklig zur Bewegungsrichtung A, B des Schlittens 12 verläuft. Unterhalb der am Schlitten 12 gelagerten Umlenkwalzen 16, 18 und Umlenkrollen 20, 22 sind zwei weitere Umlenkrollen 26, 28 der Längenausgleichsanordnungen 23, 23′ angeordnet, deren Drehachsen parallel zu den Achsen der Umlenkwalzen 16, 18 bzw. Umlenkrollen 20, 22 verlaufen, die jedoch im Gegensatz zu letzteren ortsfest im Gestell 10 frei drehbar gelagert sind.The device shown in Figures 1 to 5 has a frame 10 which is only partially shown in the figures. In this frame 10, a carriage 12 is slidably guided, which can be moved back and forth in the direction of arrows A and B. In Figures 1 and 3, the carriage 12 is shown in its left end position, while the right end position is indicated by dashed lines and designated 12 '. In Figures 2, 4 and 5, the carriage 12 is shown in its right end position 12 ', while in Figure 4 the left end position is indicated by dashed lines. The carriage 12 has a frame 14 on which two deflecting rollers 16, 18 are freely rotatably mounted in the central region. In the front and rear area of the slide 12, viewed in the direction of movement A of the slide 12, are in the frame 14 two deflection rollers 20, 22 of length compensation arrangements 23, 23 'freely rotatable. The axes of rotation of the two deflection rollers 16, 18 and deflection rollers 20, 22 mounted in the slide frame 14 run parallel to one another and at right angles to the direction of movement A, B of the slide 12. The opposite deflection rollers 16, 18 define a passage opening 24 between them which is essentially at right angles to Direction of movement A, B of the carriage 12 extends. Beneath the guide rollers 16, 18 and guide rollers 20, 22 mounted on the slide 12, two further guide rollers 26, 28 of the length compensation arrangements 23, 23 'are arranged, the axes of rotation of which run parallel to the axes of the guide rollers 16, 18 or guide rollers 20, 22 which however, in contrast to the latter, they are mounted so that they can rotate freely in the frame 10.

Ueber diese Umlenkwalzen und Umlenkrollen 16, 20, 26 bzw. 18, 22, 28 ist s-förmig ein flexibles Band 30 bzw. 32 geführt. Anstelle eines einzigen Bandes 30, 32 können auch mehrere nebeneinander angeordnete Bänder vorgesehen werden, die auf gleiche Weise wie das Band 30 bzw. 32 geführt sind. Das Band 30 ist von endlicher Länge und an seinen Enden, an den mit 34 und 36 bezeichneten Befestigungsstellen am Gestell 10 fixiert. Das Band 32 ist endlos ausgebildet und zusätzlich um zwei am Gestell 10 drehbar gelagerte Walzen 38, 40 geführt. Ein erster Abschnitt 30a bzw. 32a der Bänder 30, 32 verläuft von der einen Befestigungsstelle 34 bzw. Walze 40 in Bewegungsrichtung A, B des Schlittens 12 oberhalb diesem zu den Umlenkwalzen 16 bzw. 18. Ein zweiter Bandabschnitt 30b bzw. 32b, der während der Schlittenverschiebung seine Länge beibehält, verläuft etwa parallel zum ersten Bandabschnitt 30a bzw. 32a von der Umlenkwalze 16, 18 zur ersten Umlenkrolle 20, 22. Der anschliessende Bandabschnitt 30c bzw. 32c verläuft von der Umlenkrolle 20 bzw. 22 zur ortsfesten Umlenkrolle 26 bzw. 28. Zwischen den Umlenkrollen 26 bzw. 28 und der zweiten Befestigungsstelle 36 bzw. Walze 38 liegen die Bandabschnitte 30d bzw. 32d. Diese Bandabschnitte 30d und 32d verändern ihre Länge während der Schlittenbewegung ebenfalls nicht. Die Bandabschnitte 30c, 30d und 32c, 32d verlaufen ebenfalls im wesentlichen parallel zum ersten Bandabschnitt 30a bzw. 32a. Der zwischen den beiden Walzen 38 und 40 liegende Abschnitt des endlosen Bandes 32 ist mit 32e bezeichnet. Im Bereich zwischen den beiden Walzen 36, 38 ist eine symbolisch dargestellte ortsfeste Klemmeinrichtung 42 vorgesehen, deren Klemmorgan 43 von einer in den Figuren 1, 4 und 5 gezeigten Klemmstellung, in welcher sie den Bandabschnitt 32e zwischen sich und dem Gestell 10 festklemmt, in eine in den Figuren 2 und 3 gezeigt und mit 43′ bezeichnete Ruhestellung und wieder zurück überführbar ist.A flexible band 30 or 32 is guided in an S-shape over these deflecting rollers and deflecting rollers 16, 20, 26 and 18, 22, 28. Instead of a single belt 30, 32, a plurality of belts arranged next to one another can also be provided, which are guided in the same way as the belt 30 or 32. The band 30 is of finite length and is fixed at its ends to the mounting points on the frame 10 at 34 and 36. Band 32 is endless formed and additionally guided around two rollers 38, 40 rotatably mounted on the frame 10. A first section 30a or 32a of the belts 30, 32 runs from the one fastening point 34 or roller 40 in the direction of movement A, B of the carriage 12 above the latter to the deflecting rollers 16 or 18. A second belt section 30b or 32b, which during the slide displacement maintains its length runs approximately parallel to the first belt section 30a or 32a from the deflection roller 16, 18 to the first deflection roller 20, 22. The adjoining belt section 30c or 32c runs from the deflection roller 20 or 22 to the stationary deflection roller 26 or 28. The belt sections 30d and 32d lie between the deflection rollers 26 and 28 and the second fastening point 36 and roller 38, respectively. These band sections 30d and 32d also do not change their length during the carriage movement. The band sections 30c, 30d and 32c, 32d likewise run essentially parallel to the first band section 30a and 32a. The section of the endless belt 32 lying between the two rollers 38 and 40 is designated 32e. In the area between the two rollers 36, 38 there is provided a symbolically illustrated stationary clamping device 42, the clamping member 43 of which in a clamping position shown in FIGS. 1, 4 and 5, in which it clamps the belt section 32e between itself and the frame 10 shown in Figures 2 and 3 and with 43 'designated rest position and can be transferred back.

Falls der in der Klemmeinrichtung 42 gezeigte Pfeil gegen den Bandabschnitt 32e gerichtet ist, so befindet sich das Klemmorgan 43 der Klemmstellung, zeigt der Pfeil hingegen vom Bandabschnitt 32e weg, so befindet sich das Klemmorgan 43 in der Ruhestellung 43′.If the arrow shown in the clamping device 42 is directed against the band section 32e, the clamping member 43 is in the clamping position, the shows Arrow, however, away from the band section 32e, so the clamping member 43 is in the rest position 43 '.

Im Bereich der Umlenkrolle 22 sind am Schlittenrahmen 14 zwei Klemmanordnungen 44 bzw. 46 befestigt. Die erste Klemmanordnung 44 ist in der Figur 6 und die zweite Klemmanordnung 46 in der Figur 7 vergrössert dargestellt. Jede der beiden Klemmanordnungen 44, 46 weist ein Klemmelement 48 bzw. 50 auf, welches in Richtung der Doppelpfeile C bzw. D von einer in den Figuren 6 und 7 sowie 1, 4 und 5 gezeigten Ruhestellung in eine am Band 32 anliegende und mit 48′ bzw. 50′ gezeigte Klemmstellung überführbar sind, wie dies in den Figuren 2 bzw. 3 dargestellt ist. Ist der im Klemmelement 48, 50 gezeigte Pfeil vom Band 32 weggerichtet, so befindet sich das Klemmelement 48, 50 in der Ruhestellung. Zeigt hingegen der entsprechende Pfeil gegen das Band 32, so sind die Klemmelemente 48, 50 in ihre Klemmstellungen 48′, 50′ überführt. In der Klemmstellung 48′ klemmt das Klemmelement 48 den Bandabschnitt 32c zwischen sich und der ersten Umlenkrolle 22 fest, was dazu führt, dass das Band 32 bezüglich des Schlittens 12 stillsteht. In der Klemmstellung 50′ klemmt das Klemmelement 50 den Bandabschnitt 32d zwischen sich und einem ebenfalls am Schlittenrahmen 14 befestigten Anschlagorgan 52 fest. Dies führt dazu, dass sich der erste Bandabschnitt 32a bei sich in Pfeilrichtung A bewegenden Schlitten 12 in Richtung des Pfeiles B bewegt.In the area of the deflection roller 22, two clamping arrangements 44 and 46 are fastened to the slide frame 14. The first clamping arrangement 44 is shown enlarged in FIG. 6 and the second clamping arrangement 46 in FIG. Each of the two clamping arrangements 44, 46 has a clamping element 48 or 50 which, in the direction of the double arrows C and D, moves from a rest position shown in FIGS. 6 and 7 and 1, 4 and 5 to a contact with the belt 32 and with 48 'Or 50' shown clamping position can be transferred, as shown in Figures 2 and 3. If the arrow shown in the clamping element 48, 50 is directed away from the band 32, the clamping element 48, 50 is in the rest position. However, if the corresponding arrow points against the band 32, the clamping elements 48, 50 are transferred into their clamping positions 48 ', 50'. In the clamping position 48 ', the clamping element 48 clamps the band section 32c between itself and the first deflection roller 22, which leads to the band 32 standing still with respect to the carriage 12. In the clamped position 50 ', the clamping element 50 clamps the band section 32d between itself and a stop member 52 also fastened to the slide frame 14. As a result, the first band section 32a moves in the direction of the arrow B when the carriages 12 are moving in the direction of the arrow A.

Oberhalb des Schlittens 12 ist ein Anschlag 54 für einen jeweils zu bildenden Stapel 56, 56a, 56b, 56c angeordnet. Auf der bezüglich des jeweiligen Stapels 56, 56a, 56b, 56c gegenüberliegenden Seite des Anschlages 54 kann ein weiterer nicht dargestellter Anschlag vorgesehen sein, welcher aber derart ausgebildet sein muss, dass er aus dem Bereich des Stapels 56, 56a, 56b, 56c gebracht werden kann. Dieser Anschlag 54 und gegebenenfalls der weitere Anschlag sind jedoch nicht zwingend erforderlich, da die Schlittenbewegung während der Bildung von Stapeln 56, 56a, 56b, 56c keine Verschiebung desselben bewirkt. Jeder Stapel 56, 56a, 56b, 56c wird durch aufeinanderliegende Abschnitte 58 einer endlosen Materialbahn 60 gebildet, die beispielsweise eine Papierbahn sein kann, wie dies in der Fig. 1 gezeigt ist. Diese Materialbahn 60 wird an den Falzstellen 62 gefaltet. Diese Falzstellen 62 sind durch Perforationen 64 festgelegt, die in regelmässigen Abständen A angeordnet sind und rechtwinklig zur Längserstreckung der Materialbahn 60 verlaufen. Die Materialbahn 60 ist von unten durch die Durchtrittsöffnung 24 auf die Oberseite der Bänder 30 bzw. 32 geführt. Unterhalb der Durchtrittsöffnung 24 kann eine nicht dargestellte Rücklaufsperre für die Materialbahn 60 vorgesehen sein.Above the slide 12 there is a stop 54 for a stack 56, 56a, 56b, 56c to be formed in each case. On the respective stack 56, 56a, 56b, 56c opposite side of the stop 54, a further stop (not shown) can be provided, but this must be designed such that it can be brought out of the area of the stack 56, 56a, 56b, 56c. However, this stop 54 and, if appropriate, the further stop are not absolutely necessary, since the slide movement does not cause any displacement thereof during the formation of stacks 56, 56a, 56b, 56c. Each stack 56, 56a, 56b, 56c is formed by superimposed sections 58 of an endless material web 60, which can be, for example, a paper web, as shown in FIG. 1. This material web 60 is folded at the fold points 62. These fold points 62 are defined by perforations 64 which are arranged at regular intervals A and run at right angles to the longitudinal extent of the material web 60. The material web 60 is guided from below through the passage opening 24 to the top of the belts 30 and 32, respectively. A backstop (not shown) for the material web 60 can be provided below the passage opening 24.

Oberhalb des zu bildenden Stapels 56, 56a, 56b, 56c ist ein Andrückelement 66 gezeigt, das in Pfeilrichtung E auf den Stapel 56, 56a, 56b, 56c absenkbar bzw. von diesem abhebbar ist.Above the stack 56, 56a, 56b, 56c to be formed, a pressing element 66 is shown which can be lowered in the direction of arrow E onto the stack 56, 56a, 56b, 56c or can be lifted off the stack.

Die Hin- und Herbewegung des Schlittens 12 wird durch ein Kurbelgetriebe 68 erzeugt. Dieses weist einen Schwinghebel 70 auf, der am einen Ende um eine Achse 70a schwenkbar gelagert ist und am andern Ende am Schlittenrahmen 14 angreift. Dieser Schwinghebel 70 ist gelenkig mit einem Antriebshebel 72 verbunden, der am andern Ende exzentrisch an einem Antriebsrad 74 angebracht ist. Letzteres wird von einem Motor 76 umlaufend angetrieben. Die Umlaufbewegung des Antriebsrades 74 hat auf bekannte Weise ein Hin- und Herschwingen des Schwinghebels 70 und damit eine entsprechende Hin- und Herbewegung des Schlittens 12 zur Folge.The reciprocation of the carriage 12 is generated by a crank mechanism 68. This has a rocker arm 70 which is pivotally mounted at one end about an axis 70a and acts on the slide frame 14 at the other end. This rocker arm 70 is articulated connected to a drive lever 72 which is eccentrically attached to a drive wheel 74 at the other end. The latter is driven in rotation by a motor 76. The orbital movement of the drive wheel 74 results in a known swinging of the rocking lever 70 and thus a corresponding back and forth movement of the slide 12.

An das Gestell 10 schliesst im Bereich der Walzen 38, 40 eine Wegfördereinrichtung 78 zum Wegfördern der fertigen Stapel 56 in Pfeilrichtung F an. Mit 80 ist eine Lichtschranke bezeichnet, welche oberhalb des Bandes 32 vorgesehen ist und bezüglich des Anschlages 54 um zweimal den Abstand a nach links versetzt angeordnet ist.Connected to the frame 10 in the area of the rollers 38, 40 is a conveying device 78 for conveying the finished stacks 56 away in the direction of the arrow F. 80 denotes a light barrier which is provided above the belt 32 and is arranged offset twice to the left with respect to the stop 54 by the distance a.

Die nicht dargestellten, allgemein bekannten Antriebsanordnungen für die Klemmeinrichtung 42, die Klemmanordnungen 44, 46, das Andrückelement 66 und die Fördereinrichtung 78, sowie der Motor 76 und die Lichtschranke 80 sind über strichpunktiert angedeutete Leitungen 82 mit einer Steuerung 84 verbunden. Diese steuert die gesamte Vorrichtung während des Faltens und Stapelns der Materialbahn 60 sowie während des Wegförderns der fertigen, auf dem tragwirksamen Trum 32a bzw. der Wegfördereinrichtung 78 aufliegenden Stapel 56, 56a, 56b, 56c.The generally known drive arrangements (not shown) for the clamping device 42, the clamping arrangements 44, 46, the pressing element 66 and the conveying device 78, as well as the motor 76 and the light barrier 80 are connected to a controller 84 via lines 82 indicated by broken lines. This controls the entire device during the folding and stacking of the material web 60 and during the conveying away of the finished stacks 56, 56a, 56b, 56c resting on the load-bearing strand 32a or the conveying device 78.

In der Fig. 1 ist der erste zu bildende Stapel 56 während dem Falz- und Stapelvorgang und in der Fig. 2 der fertigen Stapel 56 dargestellt. In der Fig. 3 ist die Position des Stapels 56 nach dem ersten Hub des Schlittens 12 in Pfeilrichtung B zum Wegfördern des Stapels 56 angegeben. In der Fig. 4 befindet sich der zweite fertige Stapel 56a in jener Lage, in welcher mit der Bildung des dritten Stapels 56b begonnen wird; der Stapel 56a ist teilweise auf den ersten Stapel 56 aufgeschoben dargestellt. Gemäss Fig. 5 sind die drei fertigen Stapel 56, 56a, 56b aufeinander aufgeschoben dargestellt, wobei der Stapel 56b um den zweifachen Abstand a vom Anschlag 54 entfernt ist; der vierte Stapel 56c ist noch nicht fertig.FIG. 1 shows the first stack 56 to be formed during the folding and stacking process and FIG. 2 shows the finished stack 56. 3 shows the position of the stack 56 after the first stroke of the carriage 12 in the direction of arrow B for conveying away the stack 56. 4 is the second finished Stack 56a in the position in which formation of the third stack 56b begins; stack 56a is shown partially pushed onto first stack 56. 5, the three finished stacks 56, 56a, 56b are shown pushed onto one another, the stack 56b being separated from the stop 54 by twice the distance a; the fourth stack 56c is not yet finished.

Figur 8 zeigt eine weitere Ausbildungsform der erfindungsgemässen Einrichtung zum zickzackförmigen Falten und Stapeln der Materialbahn 60 in einer Darstellung gemäss Fig. 5. Die in diesen beiden Figuren gezeigten Vorrichtungen sind genau gleich aufgebaut mit der Ausnahme, dass bei der Vorrichtung gemäss Fig. 8 die in den Fig. 1 bis 5 gezeigten mit den Bezugsziffern 44 und 46 bezeichneten Klemmanordnungen mit den Klemmelementen 48 und 50 durch einen Förderantrieb 86 ersetzt sind. Die Bezugszeichen in dieser Fig. 8 beziehen sich auf genau diesselben Teile wie bei der Vorrichtung gemäss den Fig. 1 bis 5. Diese werden deshalb nur noch soweit beschrieben als dies für das Verständnis der Fig. 8 notwendig ist. Der Förderantrieb 86 weist einen Fördermotor 88 auf, der über eine Kettentrieb 90 mit der Walze 38 wirkverbunden ist. Das endlose Band 32 ist schlupffest um die Walze 38 geführt, verläuft zwischen dem Klemmorgan 43 und dem Gestell 10 hindurch zur Walze 40, von dort in bekannter Art und Weise zur Umlenkwalze 18 und S-förmig um die Umlenkrollen 22 und 28 zurück zur Walze 38.FIG. 8 shows a further embodiment of the device according to the invention for zigzag folding and stacking of the material web 60 in a representation according to FIG. 5. The devices shown in these two figures are constructed exactly the same, with the exception that in the device according to FIG 1 to 5 shown with the reference numerals 44 and 46 clamping arrangements with the clamping elements 48 and 50 are replaced by a conveyor drive 86. The reference numerals in this FIG. 8 refer to exactly the same parts as in the device according to FIGS. 1 to 5. These are therefore only described to the extent necessary for the understanding of FIG. 8. The conveyor drive 86 has a conveyor motor 88 which is operatively connected to the roller 38 via a chain drive 90. The endless belt 32 is guided in a slip-resistant manner around the roller 38, runs between the clamping member 43 and the frame 10 to the roller 40, from there in a known manner to the deflection roller 18 and S-shaped around the deflection rollers 22 and 28 back to the roller 38 .

Das andere Band 30 ist einerends bei der Befestigungsstelle 34 am Gestell 10 befestigt, verläuft zur Umlaufwalze 16 und von dort S-förmig um die beiden Umlenkrollen 20 und 26 zur Befestigungsstelle 36, wo es andernends am Gestell 10 fixiert ist. Die beiden Umlenkwalzen 16 und 18 sowie die beiden Umlenkrollen 20 und 22 sind am Schlittenrahmen 14 des mittels des Motores 76 und Kurbelgetriebes 68 in Pfeilrichtung A und B hin- und herbewegbaren Schlittens 12 frei drehbar gelagert. Auf der Wegfördereinrichtung 78 und dem Band 32 liegen drei fertige Stapel 56, 56a, 56b auf, wobei der mit 56c bezeichnete Stapel durch zickzackförmiges Falzen der durch die Durchtrittsöffnung 24 von unten zugeführten Materialbahn 60 noch fertigzubilden ist. Mit 58a sind die Ausbuchtungen jener Abschnitte der Materialbahn 60 bezeichnet, welche zwei aufeinanderfolgende Stapel 56, 56a, 56b, 56c miteinander verbundet. Das Andrückelement 66 ist von Stapel 56c abgehoben gezeigt.The other band 30 is attached at one end to the mounting point 34 on the frame 10, runs to the circulating roller 16 and from there S-shaped around the two deflection rollers 20 and 26 to the fastening point 36, where it is fixed to the frame 10 at the other end. The two deflecting rollers 16 and 18 and the two deflecting rollers 20 and 22 are freely rotatably mounted on the carriage frame 14 of the carriage 12 which can be moved back and forth in the direction of arrows A and B by means of the motor 76 and crank mechanism 68. Three finished stacks 56, 56a, 56b lie on the conveyor 78 and the belt 32, the stack denoted by 56c still being finished by zigzag folding of the material web 60 fed through the through opening 24 from below. The bulges of those sections of the material web 60 which connect two successive stacks 56, 56a, 56b, 56c to one another are designated by 58a. The pressing element 66 is shown lifted off the stack 56c.

Die weiter oben beschriebene Vorrichtung gemäss den Fig. 1 bis 7 funktioniert wie folgt:
   Zum Falten und Stapeln der zugeführten Materialbahn 60 wird das Klemmorgan 43 der Klemmeinrichtung 42 in die Klemmstellung überführt und die Klemmelemente 48, 50 der Klemmanordnungen 44, 46 befinden sich in ihrer Ruhestellung, wie dies in der Figur 1 mit den entsprechenden Pfeilen angedeutet ist. Bei sich in der linken Endstellung befindendem Schlitten 12 wird der Anfang der von unten durch die Durchtrittsöffnung 24 zugeführten Materialbahn 67 an den Anschlag 54 zur Anlage gebracht und das Andrückelement 66 abgesenkt, sodass der erste Abschnitt 58 der Materialbahn 60 zwischen dem Band 30 und dem Andrückelement 66 eingeklemmt ist. Bei der Bewegung des Schlittens 12 in Pfeilrichtung A hebt sich der am Band 30 im Bereich der Umlenkwalze 16 anliegende Teil der Materialbahn 60 von diesem ab und wird ausgebuchtet. Bei der Weiterbewegung wird diese Ausbuchtung zwischen dem ersten Abschnitt 58 der Materialbahn 60 und dem Band 32 eingeklemmt, was zu einer Falzbildung bei der ersten Perforation 64 führt. Sobald der Schlitten 12 die rechte Endstellung 12′ erreicht hat, erfolgt am Anfang der Rückbewegung des Schlittens 12 in Pfeilrichtung B eine Faltung der Materialbahn im Gegensinn. Dieser Falzvorgang ist in der DE-OS 33 44 260 ausführlich beschrieben. Der Hub des Schlittens 12 ist bei der Hin- und Herbewegung unter dem Stapel 56 hindurch geringfügig grösser als der Abstand a zwischen zwei aufeinanderfolgenden Falzstellen 62 bzw. Perforationen 64. Während des Falzvorgangs wird das Andrückelement 66 entsprechend der Stapelhöhe angehoben, bis es nach einer vorgegebenen Anzahl Faltvorgängen vom Stapel 56 abgehoben und in Pfeilrichtung E in die obere Endlage überführt wird. Die beim Stapelvorgang zwangsweise Veränderung der Länge des Abschnittes 30a, 32a wird durch die entgegengesetzte Längenänderung des Bandabschnittes 30c, 32c, ergänzt.The device described above according to FIGS. 1 to 7 works as follows:
For folding and stacking the supplied material web 60, the clamping member 43 of the clamping device 42 is transferred into the clamping position and the clamping elements 48, 50 of the clamping arrangements 44, 46 are in their rest position, as is indicated in FIG. 1 by the corresponding arrows. When the carriage 12 is in the left end position, the beginning of the material web 67 fed from below through the passage opening 24 is brought into abutment against the stop 54 and the pressing element 66 is lowered, so that the first section 58 of the material web 60 between the belt 30 and the pressing element 66 is jammed. When moving of the carriage 12 in the direction of arrow A, that part of the material web 60 which is in contact with the belt 30 in the region of the deflecting roller 16 lifts off and is bulged. During the further movement, this bulge is clamped between the first section 58 of the material web 60 and the band 32, which leads to a fold formation in the first perforation 64. As soon as the carriage 12 has reached the right end position 12 ', the material web is folded in the opposite direction at the beginning of the return movement of the carriage 12 in the direction of arrow B. This folding process is described in detail in DE-OS 33 44 260. The stroke of the carriage 12 during the back and forth movement under the stack 56 is slightly greater than the distance a between two successive fold points 62 or perforations 64. During the folding process, the pressing element 66 is raised according to the stack height until it reaches a predetermined level Number of folding operations is lifted from the stack 56 and transferred to the upper end position in the direction of arrow E. The change in the length of the section 30a, 32a which is forced during the stacking process is supplemented by the opposite change in length of the belt section 30c, 32c.

Sobald der fertige Stapel 56 die erforderliche Höhe erreicht hat bzw. eine vorgegebene Anzahl Abschnitte 58 der Materialbahn 60 zum Stapel 56 gefaltet worden sind, wird der Schlitten 12 in die rechte Endlage 12′ überführt, wie dies in der Figur 2 dargestellt ist. In dieser Stellung des Schlittens 12 wird das Klemmorgan 43 der Klemmeinrichtung 42 in die mit 43′ bezeichnete Ruhestellung überführt und das Band 32 mittels der Klemmanordnung 44 festgeklemmt. Dadurch werden der erste, tragwirksame Abschnitt 32a und zweite Abschnitt 32b des Bandes 32 bezüglich des Schlittens 12 festgehalten. Bei der nun folgenden Bewegung des Schlittens 12 in Pfeilrichtung B wird der auf dem ersten Bandabschnitt 32a aufliegende, fertige Stapel 56, wie dies mit dem Pfeil 56′ angedeutet ist, mitgenommen, bis der Schlitten 12 sich in seiner strichpunktiert gezeigten linken Endlage befindet. Nun wird, wie dies in der Figur 3 dargestellt ist, das Klemmelement 48 in seine Ruhestellung und das Klemmelement 50 der Klemmanordnung 46 in die Klemmstellung 50′ überführt. Bei der nun folgenden Bewegung des Schlittens 12 in Pfeilrichtung A von seiner linken Endlage zur rechten Endlage 12′ bewegt sich der erste Bandabschnitt 32a, infolge der Mitnahme des Bandabschnittes 32d, entgegen der Pfeilrichtung A, sodass der fertige Stapel 56 in Pfeilrichtung 56′ weiterverschoben wird, und zwar solange bis der Stapel 56 die Lichtschranke 80 frei gibt, analog wie dies in der Figur 4 mit dem rechts dargestellten, fertigen Stapel 56a angedeutet ist. Da der Hub des Schlittens 12 geringfügig grösser ist als der Abstand a und die Lichtschranke 80 um zweimal den Abstand a vom Anschlag 54 entfernt ist, ist dies kurz bevor der Schlitten 12 seine rechte Endlage 12′ erreicht hat der Fall. Nun wird auch das Klemmelement 50 in seine Ruhestellung und das Klemmorgan 43 der Klemmeinrichtung 42 in die Klemmstellung überführt, wodurch der Stapel 56 bei der Weiterbewegung des Schlittens 12 ortsfest gehalten ist. Bei der Verschiebung des Stapels 56 in Pfeilrichtung 56′ hat dieser die Materialbahn 60 nachgezogen, sodass beim nun wieder beginnenden Falzvorgang eine Perforation 64 an den Anschlag 54 zur Anlage kommt.As soon as the finished stack 56 has reached the required height or a predetermined number of sections 58 of the material web 60 have been folded into the stack 56, the carriage 12 is transferred to the right end position 12 ', as shown in FIG. 2. In this position of the carriage 12, the clamping member 43 of the clamping device 42 is transferred to the rest position designated 43 'and the band 32 is clamped by means of the clamping arrangement 44. This will be the first to be effective Section 32a and second section 32b of the belt 32 are retained with respect to the carriage 12. In the now following movement of the carriage 12 in the direction of arrow B, the finished stack 56 lying on the first belt section 32a, as indicated by the arrow 56 ', is carried along until the carriage 12 is in its left end position shown in broken lines. Now, as shown in FIG. 3, the clamping element 48 is moved into its rest position and the clamping element 50 of the clamping arrangement 46 into the clamping position 50 '. With the now following movement of the carriage 12 in the direction of arrow A from its left end position to the right end position 12 ', the first band section 32a moves due to the entrainment of the band section 32d, against the arrow direction A, so that the finished stack 56 is moved further in the arrow direction 56' until the stack 56 releases the light barrier 80, analogously to that indicated in FIG. 4 with the finished stack 56a shown on the right. Since the stroke of the carriage 12 is slightly larger than the distance a and the light barrier 80 is twice the distance a from the stop 54, this is just before the carriage 12 has reached its right end position 12 '. Now the clamping element 50 is also moved into its rest position and the clamping member 43 of the clamping device 42 into the clamping position, as a result of which the stack 56 is held stationary when the carriage 12 continues to move. When the stack 56 is displaced in the direction of arrow 56 ', this has pulled the material web 60 so that a perforation 64 comes to rest against the stop 54 when the folding process begins again.

Wie dies in der Figur 4 für die Bildung des dritten Stapels 56b dargestellt ist, wird jeweils für die Bildung eines neuen Stapels 56 das Andrückelement 66 bei sich in der rechten Endlage 12′ befindendem Schlitten 12 abgesenkt. Bei den nun folgenden Hin- und Herbewegungen des Schlittens 12 in Pfeilrichtung B bzw. A wird in analoger Weise, wie dies weiter oben beschrieben ist, ein weiterer Stapel 56a gebildet. Da nach einigen Falzschritten das Andrückelement 66 vom zu bildenden Stapel 56a abgehoben wird, wird der zuoberst auf diesem Stapel 56a liegende Abschnitt 58 frei gegeben, so dass der Höhenunterschied ausgleichen werden kann, dies führt zu einer Ausbuchtung 58a der beiden obersten Abschnitte 58.As shown in FIG. 4 for the formation of the third stack 56b, the pressing element 66 is lowered in each case for the formation of a new stack 56 with the carriage 12 located in the right end position 12 '. During the subsequent back and forth movements of the carriage 12 in the direction of the arrow B or A, a further stack 56a is formed in a manner analogous to that described above. Since the pressing element 66 is lifted from the stack 56a to be formed after a few folding steps, the section 58 lying on top of this stack 56a is released so that the height difference can be compensated for, which leads to a bulge 58a of the two uppermost sections 58.

Sobald der zweite Stapel 56a fertig ist, wird nun in analoger Weise, wie dies weiter oben beschrieben und in den Figuren 2 und 3 dargestellt ist, der Stapel 56a um zweimal den Abstand a nach links verschoben, wie dies in der Figur 4 dargestellt ist. Der erste gebildete Stapel 56 wird dabei auf die Wegfördereinrichtung 78 aufgeschoben, wodurch sich aber in Folge der stillstehenden Wegfördereinrichtung 78 der Abstand zwischen den beiden Stapeln 56 und 56a verringert.As soon as the second stack 56a is finished, the stack 56a is now shifted to the left by twice the distance a, in a manner analogous to that described above and shown in FIGS. 2 and 3, as shown in FIG. The first stack 56 formed is pushed onto the removal device 78, but as a result of the stationary removal device 78, the distance between the two stacks 56 and 56a is reduced.

Nun erfolgt in analger Weise die Bildung eines weiteren Stapels 56b, welcher nach Fertigstellung wiederum um zweimal den Abstand a nach links verschoben wird. Dabei wird der zweite Stapel 56a an den ersten Stapel 56 herangeschoben, und anschliessend erfolgt das Aufschieben des zuletzt gebildeten Stapels 56b an den Stapel 56a. Dies ist in der Figur 5 angegeben. Die Wegfördereinrichtung 78 ist mittels der Steuerung 84 derart gesteuert, dass die Stapel 56, 56a ... aneinander anliegend weggefördert werden. Wie dies in der Figur 5 angedeutet ist, erfolgt nun die Bildung eines weiteren Stapels 56c, welcher anschliessend auch in Richtung gegen die Wegfördereinrichtung 78 gefördert wird.Now, another stack 56b is formed in an analogous manner, which is again shifted to the left by twice the distance a after completion. The second stack 56a is pushed towards the first stack 56, and then the last stack 56b formed is pushed onto the stack 56a. This is indicated in Figure 5. The removal device 78 is controlled by the control 84 in such a way that that the stacks 56, 56a ... are conveyed away against one another. As indicated in FIG. 5, a further stack 56c is now formed, which is then also conveyed in the direction against the removal device 78.

Die Materialbahn 60 wird somit zu einer Vielzahl von Stapeln 56, 56a, 56b, 56c verarbeitet, ohne dass diese aufgetrennt werden muss. Die fertigen Stapel 56, 56a ... können mittels der Wegfördereinrichtung 78 einer, diese kontinuierlich weiterverarbeitenden Station, beispielsweise einem Reiss- oder Schneidaggregat oder einer Kuvertiermaschine, zugeführt werden.The material web 60 is thus processed into a multiplicity of stacks 56, 56a, 56b, 56c without having to cut them open. The finished stacks 56, 56a ... can be fed by means of the removal device 78 to a station which continuously processes them, for example a tearing or cutting unit or an inserting machine.

Für die Verarbeitung von Materialbahnen 60 mit einem andern Abstand a zwischen aufeinanderfolgenden Perforationen 64 wird der Hub des Schlittens 12 in bekannter Art und Weise angepasst, sowie die Lichtschranke 80 bei kleinerem Abstand a in Richtung gegen den Anschlag 54 und bei grösserem Abstand a entgegen dieser Richtung verschoben, sodass der Abstand zwischen dem Anschlag 54 und der Lichtschranke 80 zweimal der Abstand a beträgt. Unterschiedliche Stapelhöhen können dadurch erzielt werden, dass weniger oder mehr Hübe des Schlittens 12 ausgeführt werden. Ueberdies ist es auch denkbar, dass ein fertig gebildeter Stapel 56, 56a ... um mehr als zweimal den Abstand a in Richtung gegen die Wegfördereinrichtung 78 gefördert wird. Die einzige Bedingung die erfüllt sein muss, ist die, dass bei der nächstfolgenden Faltung eine Falzstelle 62 bei einer Perforation 64 erfolgt. Das heisst, der Abstand zwischen dem Anschlag 54 und dem zuletzt gebildeten fertigen Stapel 56, 56a, 56b ist ein ganzzahliges Vielfaches des Abstandes a.For the processing of material webs 60 with a different distance a between successive perforations 64, the stroke of the carriage 12 is adapted in a known manner, as is the light barrier 80 with a smaller distance a in the direction against the stop 54 and with a larger distance a against this direction moved so that the distance between the stop 54 and the light barrier 80 is twice the distance a. Different stack heights can be achieved by performing fewer or more strokes of the slide 12. Moreover, it is also conceivable that a stack 56, 56a ... which has been formed is conveyed by more than twice the distance a in the direction against the removal device 78. The only condition that must be met is that a fold 62 occurs at a perforation 64 during the next folding. This means that the distance between the stop 54 and the last formed stack 56, 56a, 56b is one integer multiple of the distance a.

Um ein genaues Positionieren des fertigen Stapels 56, 56a..., ein problemloses Aufeinanderaufschieben der Stapel 56, 56a... und ein ruckfreies Umschalten der Klemmeinrichtung 42 bzw. Klemmanordnungen 44, 46 zu ermöglichen, wird jeweils gegen das Ende der Bildung eines fertigen Stapels 56, 56a... die Geschwindigkeit des Motores 76 reduziert bis vom neuen Stapel die ersten Faltungen erfolgt sind.In order to enable an exact positioning of the finished stack 56, 56a ..., a problem-free pushing of the stack 56, 56a ... and a smooth switching of the clamping device 42 or clamping arrangements 44, 46, one is finished towards the end of the formation Stacks 56, 56a ... the speed of the motor 76 is reduced until the first folds have been made from the new stack.

Zum zickzackförmigen Falten und Stapeln der Materialbahn 60 funktioniert die in der Fig. 8 gezeigte Ausbildungsform der Vorrichtung genau gleich wie die Vorrichtung gemäss denFig. 1 bis 5. Das Klemmorgan 43 befindet sich in seiner Klemmstellung und hält das Band 32 bezüglich des Gestells 10 fest. Sobald nun ein fertiger Stapel 56 die erforderliche Höhe erreicht hat bzw. eine vorgegebene Anzahl Abschnitte 58 der Materialbahn 60 zum Stapel 56 gefaltet worden sind, wird der Schlitten 12 in die rechte in der Fig. 8 gezeigte Endlage 12′ überführt. In dieser Stellung wird der Schlitten 12 angehalten und das Klemmorgan 43 in die Ruhestellung 43′ (vergl. Fig. 2) überführt. Nun wird das Band 32 mittels des Förderantriebes 86 in Förderrichtung F umlaufend angetrieben bis der zuletzt gebildete fertige Stapel 56 die Lichtschranke 80 passiert hat. Die Position dieses Stapels entspricht dem in der Fig. 8 mit 56b bezeichneten Stapel. Nun wird der Förderantrieb 86 wieder abgestellt und das Klemmorgan 43 in die Klemmstellung überführt, um das Band 32 zwischen sich und dem Gestell 10 wieder festzuklemmen. Zur Bildung eines neuen Stapels wird das Andrückelement 66 abgesenkt und der Motor 76 wieder in Betrieb gesetzt.For the zigzag folding and stacking of the material web 60, the embodiment of the device shown in FIG. 8 functions exactly the same as the device according to the figures. 1 to 5. The clamping member 43 is in its clamping position and holds the band 32 with respect to the frame 10. As soon as a finished stack 56 has reached the required height or a predetermined number of sections 58 of the material web 60 have been folded into the stack 56, the carriage 12 is transferred to the right end position 12 'shown in FIG. 8'. In this position, the carriage 12 is stopped and the clamping member 43 is transferred to the rest position 43 '(see FIG. 2). The belt 32 is now driven in a rotating manner in the conveying direction F by means of the conveyor drive 86 until the last finished stack 56 has passed the light barrier 80. The position of this stack corresponds to the stack labeled 56b in FIG. 8. Now the conveyor drive 86 is switched off again and the clamping member 43 is moved into the clamping position in order to clamp the belt 32 between itself and the frame 10 again. The pressure element is used to form a new stack 66 lowered and the motor 76 started again.

Es ist auch denkbar, dass nur eine einzige Klemmanordnung 44 bzw. 46 vorgesehen ist. Es kann dann allerdings für den Wegtransport der fertigen Stapel 56, 56a... nur der Hub des Schlittens 12 von der linken Endlage zur rechten Endlage 12′ oder von der rechten Endlage 12′ zur linken Endlage 12 ausgenützt werden. Für den jeweiligen Hub in Gegenrichtung müsste dann die entsprechende Klemmanordnung 44, 46 gelöst und die Klemmeinrichtung 42 aktiviert werden.It is also conceivable that only a single clamping arrangement 44 or 46 is provided. It can then be used for the transport of the finished stack 56, 56a ... only the stroke of the carriage 12 from the left end position to the right end position 12 'or from the right end position 12' to the left end position 12. For the respective stroke in the opposite direction, the corresponding clamping arrangement 44, 46 would then have to be released and the clamping device 42 activated.

Es ist selbstverständlich auch denkbar, dass eine Klemmeinrichtung vorgesehen ist, die auf eine Walze 38, 40 oder die zweite Umlenkrolle 28 einwirkt. In diesem Fall müsste das Band 32 mit der entsprechenden Walze 38 bzw. 40 oder der Umlenkrolle 28 schlupffrei verbunden sein. Es ist auch denkbar, dass eine Klemmanordnung vorgesehen ist, die auf die Umlenkwalze 18 oder auf die Umlenkrolle 22 einwirkt. Wobei wiederum das Band 32 mit dieser Umlenkwalze 18 oder Umlenkrolle 22 schlupffrei verbunden sein muss.It is of course also conceivable for a clamping device to be provided which acts on a roller 38, 40 or the second deflection roller 28. In this case, the belt 32 would have to be connected to the corresponding roller 38 or 40 or the deflection roller 28 without slippage. It is also conceivable that a clamping arrangement is provided which acts on the deflection roller 18 or on the deflection roller 22. The belt 32 must in turn be connected to this deflection roller 18 or deflection roller 22 in a slip-free manner.

Bei einer Ausbildungsform gemäss Fig. 8 kann auf das Klemmorgan 43 verzichtet werden, wenn der Förderantrieb 86 derart ausgebildet ist, beispielsweise mit einer Bremse oder einem entsprechenden Fördermotor 88 versehen, dass er das endlose Band 32 beim Flaten der Materialbahn 60 festzuhalten vermag.8, the clamping element 43 can be dispensed with if the conveyor drive 86 is designed in such a way, for example provided with a brake or a corresponding conveyor motor 88, that it is able to hold the endless belt 32 in place when the material web 60 is flattened.

Claims (11)

  1. An apparatus for the ziz-zag folding and stacking of a web of material, with, disposed on a slide (12) and defining a slot-like passage (24) through which it is possible for material web (60), fed from below, to pass, two deflecting members (16, 18) which are adapted for reciprocating movement together with the slide, under the stack (56) which has to be formed, and substantially in a direction at right-angles to the passage (24) between two extreme positions which are spaced apart by at least a distance between two adjacent fold locations (62), and with two belt-like supporting elements (30, 32), the effectively bearing strands (30a, 32a) of which form a support for the stack and which are passed around the relevant deflecting members to in each case a length compensating arrangement (23, 23′) which are constructed to compensate for the positive lengthening of one and shortening of the other effectively bearing strand, and which are held fast during stacking, by means of respective retaining elements (42), characterised in that one supporting element (32) is of endless construction and is guided over a deflecting arrangement (38, 40) which is rigidly disposed at the end of the effectively bearing strand (32a) which is remote from the deflecting member (18) and in that the corresponding retaining element (42) is constructed for releasably gripping the supporting element (32) and in that driving means (12, 44, 46, 68, 76) are provided so that when the supporting element (32) is released by the retaining element (42), the said supporting element is driven, in relation to the effectively bearing strand (32a), in the direction from the corresponding deflecting member (18) to the deflecting arrangement (38, 40), in order to carry away the completed stack (56, 56a, 56b, 56c).
  2. An apparatus according to claim 1, characterised in that the retaining element associated with the endless supporting element (32) comprises a fixed controllable clamping means (42) while the drive means comprises at least one clamping arrangement (44, 46) which is propelled together with the slide (12) and which can likewise be controlled so that the endless supporting element (32) can be gripped by the clamping means (42) during stacking and can be connected to the slide (12) by means of the clamping arrangement (44, 46) so that the finished stack (56, 56a, 56b, 56c) can be carried away.
  3. An apparatus according to claim 1 or 2, characterised in that the endless supporting element (32) is, in the region of the length compensating arrangement (23′) guided from the deflecting member (18) in an S-shape over a first guide roller (22) disposed on the slide (12) and then over a second immovably mounted guide roller (28) so that when a stack (56, 56a, 56b, 56c) is formed, the portion (32c) of the supporting element (32) which is disposed between the two guide rollers (22, 28) alters in length, in whatever is the opposite direction to that in which the length of the effectively bearing strand (32a) changes.
  4. An apparatus according to claim 2 and 3, characterised in that the clamping means (42) is provided in the region of the deflecting arrangement (38, 40) and can be brought to bear on the supporting element (32).
  5. An apparatus according to claim 4, characterised in that the deflecting arrangement comprises, spaced apart from each other, two parallel deflecting rollers (38, 40) and in that the clamping means (42) has in the region between the deflecting rollers (38, 40) a clamping member (43) which can be moved from a clamping position into an inoperative position (43′) and back again, in order that the supporting element (32) can be releasably gripped between the clamping member and a counter-abutment (10).
  6. An apparatus according to claim 2 and 3, characterised in that there are disposed on the slide (12) two clamping arrangements (44, 46) which are disengaged during stacking and which are alternately activated when the finished stacks (56, 56a, 56b, 56c) are being carried away, the first clamping arrangement (44) being capable of being caused to act on the effectively bearing strand (32a) or the portions (32b, 32c) disposed between the relevant deflecting member (18) and the second guide roller (28), while the second clamping arrangement (46) can be caused to act on that portion (32d) of the supporting element (32) which is disposed between the second guide roller (28) and the deflecting arrangement (38, 40).
  7. An apparatus according to claim 6, characterised in that each clamping arrangement (44, 46) has a clamping element (48, 50) adapted to be moved from an inoperative position into a clamping position (48′, 50′) and back again whereby, in the respective clamping position (48′, 50′) the clamping element (48) of the first clamping arrangement (44) grips the supporting element (32) between itself and the first guide roller (22) while that of the second clamping arrangement (46) grips the supporting element (32) between itself and an abutment member (52) fixed on the slide (12).
  8. An apparatus according to claim 2 and 3, characterised in that the clamping means can be caused to act on the deflecting arrangement or the second guide roller and the clamping arrangement can be caused to act on the relevant deflecting member or the first guide roller, the supporting element being connected to the deflecting arrangement or the second guide roller and with the deflecting member or the first guide roller in non-slip manner.
  9. An apparatus according to one of claims 1 to 8, characterised in that a position indicator (80), preferably a light barrier, is provided for the most recently formed stack (56, 56a, 56b, 56c) so that when this stack (56, 56a, 56b, 56c) is carried away the clamping arrangement (40, 46) connecting the supporting element (32) to the slide (12) can be released and the fixed clamping means (42) can be activated as soon as the stack (56, 56a, 56b, 56c) has been carried away by n times the distance (a) between two adjacent fold locations (62, 64) from the first fold location (62) to be formed in the next stack (56a, 56b, 56c) which is to be newly formed, n being a whole number and greater than 1.
  10. An apparatus according to one of claims 1 to 9, characterised in that there is a pressure-applying element (66) which can be brought to bear on the stack (56, 56a, 56b, 56c) which is to be formed or on the first portion (58) of the web (60) of material.
  11. A method of operating the apparatus according to claim 6, characterised in that in order to form a stack (56, 56a, 56b, 56c) the fixed clamping means (42) clamps the endless supporting element (32) securely while the two clamping arrangements (44, 46) disposed on the slide (12) are released, while in order to carry away the formed stack (56, 56a, 56b, 56c) the clamping means (42) is released and upon movement of the slide (12) towards the deflecting arrangement (38, 40) the first clamping arrangement (44), and during the return movement the second clamping arrangement (46), are caused to act in clamping manner on the supporting element (32) and in that subsequently, in order to form a new stack (56a, 56b, 56c) both clamping arrangements (44, 46) are released while the clamping means (42) securely clamps the supporting element (32).
EP89119616A 1988-10-24 1989-10-23 Device for the zigzag folding and stacking of a web of material Expired - Lifetime EP0366038B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3836214 1988-10-24
DE3836214A DE3836214A1 (en) 1988-10-24 1988-10-24 DEVICE FOR ZIGZAG-SHAPED FOLDING AND STACKING OF A MATERIAL SHEET

Publications (3)

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EP0366038A2 EP0366038A2 (en) 1990-05-02
EP0366038A3 EP0366038A3 (en) 1990-11-28
EP0366038B1 true EP0366038B1 (en) 1993-03-24

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EP89119616A Expired - Lifetime EP0366038B1 (en) 1988-10-24 1989-10-23 Device for the zigzag folding and stacking of a web of material

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US (1) US5085624A (en)
EP (1) EP0366038B1 (en)
JP (1) JP2678390B2 (en)
DE (1) DE3836214A1 (en)

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DE102009032159B3 (en) * 2009-07-07 2011-01-27 Roth + Weber Gmbh paper folding
DE102012015466B4 (en) * 2012-08-03 2015-01-22 Roth + Weber Gmbh Method for folding paper
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DE3344260A1 (en) * 1983-12-07 1985-06-20 Jos. Hunkeler AG, Fabrik für graphische Maschinen, Wikon DEVICE FOR ZIGZAG-SHAPED FOLDING AND STACKING OF MATERIAL SHEETS

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DE1141610B (en) * 1953-11-12 1962-12-27 Richard Kauschka Folding device for material webs
DE2402027A1 (en) * 1974-01-17 1975-07-31 Melzer Ohg Maschf DEVICE FOR SAME FORMAT LEPORELO FOLDING OF AN ENDLESS WEB OF MATERIAL
CH660352A5 (en) * 1983-04-26 1987-04-15 Fischer Ag Brugg Georg STORAGE DEVICE FOR PLATE-SHAPED WORKPIECES.
US4670001A (en) * 1985-12-13 1987-06-02 Campbell Joseph I Bottom stacking tray

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DE3344260A1 (en) * 1983-12-07 1985-06-20 Jos. Hunkeler AG, Fabrik für graphische Maschinen, Wikon DEVICE FOR ZIGZAG-SHAPED FOLDING AND STACKING OF MATERIAL SHEETS

Also Published As

Publication number Publication date
US5085624A (en) 1992-02-04
EP0366038A2 (en) 1990-05-02
EP0366038A3 (en) 1990-11-28
DE3836214A1 (en) 1990-04-26
JPH02270764A (en) 1990-11-05
DE3836214C2 (en) 1992-08-27
JP2678390B2 (en) 1997-11-17

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