WO1987002019A1 - Device for processing endless web material with several processing stations at different operating speeds - Google Patents
Device for processing endless web material with several processing stations at different operating speeds Download PDFInfo
- Publication number
- WO1987002019A1 WO1987002019A1 PCT/EP1986/000563 EP8600563W WO8702019A1 WO 1987002019 A1 WO1987002019 A1 WO 1987002019A1 EP 8600563 W EP8600563 W EP 8600563W WO 8702019 A1 WO8702019 A1 WO 8702019A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roller
- loop
- feed
- take
- speed
- 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.)
- Ceased
Links
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
- B65H20/00—Advancing webs
- B65H20/30—Arrangements for accumulating surplus web
- B65H20/32—Arrangements for accumulating surplus web by making loops
- B65H20/34—Arrangements for accumulating surplus web by making loops with rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/24—Advancing webs by looping or like devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/44—Moving, forwarding, guiding material
- B65H2301/449—Features of movement or transforming movement of handled material
- B65H2301/4491—Features of movement or transforming movement of handled material transforming movement from continuous to intermittent or vice versa
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/11—Length
- B65H2511/112—Length of a loop, e.g. a free loop or a loop of dancer rollers
Definitions
- the invention relates to a device for processing continuous material, in particular web material between several processing stations with different feed and take-off speeds according to the preamble of claims 1 and 4.
- the sheet material When printing, perforating, punching or punching sheet material, for example paper and in particular for producing labels, the sheet material is generally processed by a plurality of processing plants in the aforementioned manner. Since the different processing plants also work with different speeds and motion sequences, a corresponding adjustment of the speed of the web material is necessary.
- the web material In a combined printing and punching machine, for example, the web material is continuously unwound from the supply roll and fed to a winding roll.
- the web material For rotary printing or punching, the web material is alternately transported at a speed which is matched to the peripheral speed of the rotary tool, and the prints are then directly connected to one another in the cliché empty spaces or, in some circumstances, slightly withdrawn.
- tools such as flat punching require the sheet material to be transported step by step, i.e. rapid forward transport movements with idle breaks alternate one after the other.
- a feed device is known with which a printing medium is fed from a discontinuously printing printing device to a continuously withdrawing processing unit.
- a storage device is provided between the printing device and the processing unit, so that during the printing process in which the print carrier for printing stands still and at the same time the processing unit continues to continuously withdraw the print carrier, a part of the band-shaped print carrier is withdrawn from the storage device. The print carrier is then drawn in the form of a loop in the storage device.
- DE-PS 944 133 describes a combined printing and punching machine which has a rotary printing unit and a downstream flat stamping unit. Since the printing cylinder is only partially covered with the printing form in rotary printing units, a loop laying carriage is provided in order to nevertheless allow the prints on the printing web to be connected directly to one another. This is wrapped in front of and behind the printing section by the web to be printed, and due to its periodic back and forth movement, the web to be printed in between can be moved alternately at printing speed and at a lower speed.
- the punching unit which only works in sections, a loop of the paper web that has to be repeated must be formed by means of a rocker.
- the grinding nlegschlitten and the rocker are coupled to each other so that the web throughput speed on the punching and rotating machines are the same on average.
- This device has the disadvantage that the loop between the rotary printing unit and the flat punching unit loosely sags and appropriate measures are required so that the web tension and thus the register between the printing and punching unit are appropriately maintained before and after the loop.
- Rotary printing units combined with a rotary stamping unit.
- a loop laying carriage is provided, with the aid of which the web to be printed is moved alternately at printing speed and at low speed in accordance with the size of the printing form and the printing cylinder or the cutting cylinder.
- the slide is moved by means of cams from a drive block back and forth.
- the drive block, the rotary printing units and the rotary punching unit are moved at the same speed or at mutually adapted speeds.
- This device has the disadvantage that when the feed sizes are changed, the cams have to be exchanged so that the path length that the loop-laying carriage has to compensate for, is adjusted. Furthermore, this device has the disadvantage that the punching time and transport speed of the web material can only be compensated for to a limited extent by different eccentrics.
- the invention has for its object to compensate for different movements of the web-shaped material between the processing stations and to achieve a high register accuracy.
- the invention is based on the basic idea of passing the continuous material over a positively controlled loop laying roller and thereby forming a reserve loop, the tension of which is always constant.
- the loop laying roller is positively controlled on the basis of the determination of the speed difference between feed and take-off.
- the device according to the invention permits a fully variable speed compensation of the most varied types of movement of the continuous material, ie it can be used to adapt different types of movement of the web material to one another.
- the endless material in the form of a reserve loop is guided over a loop laying roller which can be moved transversely to its axis and which is displaced such that the tension in the reserve loop preferably remains constant in accordance with the speed and the outgoing speed of the endless material.
- the loop is either reduced or enlarged.
- all that needs to be taken into account is that the total length of the continuous material supplied corresponds over time to the total length of the continuous material and that the displacement path to be provided for the loop laying roller is adapted to the greatest speed difference or the greatest length difference to be compensated.
- the device according to the invention has the advantage that a defined tension in the reserve is always maintained due to the positive control of the sliding movement of the loop laying roller, which is adapted to the incoming speed and the outgoing speed, with a tearing of the continuous material or an undesired one Sagging is avoided. It is preferably suitable for use in combined printing and die-cutting machines, for adapting the different types of movement of the web material, for example a print carrier that is rotatively printed and punched flat to produce labels.
- the forced control is carried out with the aid of a computer which chend the incoming and outgoing speed of the continuous material controls the necessary displacement movement for the loop laying roller.
- the loop-laying roller is preferably computer-controlled by an adjusting motor, for example a stepper motor or servo drive via an adjusting device, such as a worm gear, toothed linkage or ball screw spindle.
- the computer receives take-off speed from sensors suitable for this.
- the feed speed and the take-off speed are carried out under program control by the computer, in that the latter delivers control signals to a feed or take-off device.
- the positive control is carried out with the aid of a mechanical coupling between an adjusting device for the loop laying roller and a feed roller and a take-off roller for the continuous material.
- the adjusting device is preferably designed in such a way that the loop laying roller can be displaced parallel to a line parallel to its axis, e.g. by means of a worm gear or a screw drive, the respective ends of the axis being moved simultaneously in the same direction.
- a play-free and rigid connection is preferably to be provided for the mechanical coupling between the adjustment device and the feed or take-off roller, the displacement speed and the feed or take-off speed being related in accordance with a certain legal relationship.
- the mechanical coupling is carried out with the aid of a differential gear.
- the feed roller and the take-off roller are each connected to a first and second shaft of the differential gear and the output shaft of the differential gear is connected to the adjustment device for the loop laying roller.
- the ratio of the gear ratios is to be chosen so that the difference between the speeds of the feed roller and the take-off roller resulting on the output shaft corresponds to the speed required for the sliding movement of the loop laying roller.
- three reversing rollers are preferably arranged symmetrically to the arrangements of the feed roller, the take-off roller and the loop laying roller.
- Two reversing rollers are preferably arranged with their axes parallel and at a distance from the feed or take-off roller. The distance to these reversing rollers is advantageously equal to the distance between the feed roller and the take-off roller.
- the third reversing roller is fixed relative to the loop laying roller and, together with the latter, is movable along a connecting line between the feed or removal roller and the fixedly arranged reversing rollers.
- the Schleifenlegwalze and the third reverse roller will be supported by the adjusting device according to the ⁇ ⁇ ness feeding and Abzugsgeschwindig adjusted together. All the rollers are connected to one another via a "common transmission drive. This ensures that rotary movements of the feed or take-off roller are transmitted directly and immediately to one of the two fixed reversing rollers and as a result along the jointly movable arrangement of the loop laying roller and the third Q reversing roller the displacement path is adjusted.
- the feed roller, the take-off roller, the loop laying roller and the three reversing rollers each have a gear wheel on at least one of their ends.
- a continuous toothed belt that wraps around all the gears is provided as the transmission drive.
- a first loop the length of which corresponds to the reserve loop of the endless material between the gear wheels of the looping roller and the feed and take-off roller, and a second loop between the gear wheels of the reversing roller and the fixed reversing rollers.
- the toothed belt is preferably steel-reinforced and not designed to be stretchable.
- the displacement path for the jointly movable loop laying roller and reversing roller i.e. the distance between the feed or take-off roller and the two fixed reversing rollers, chosen so that the greatest difference between the speeds of movement of the continuous material to be drawn off and fed can be compensated.
- the supplied length of the continuous material is either buffered as a loop if the take-off speed is lower, or the continuous material from the material storage, i.e. taken from the reserve loop when the feed speed is lower in order to keep the web tension constant.
- the diameters of the feed roller, the take-off roller and the loop laying roller are the same.
- the distance between the feed and take-off roller is advantageously chosen to be equal to the diameter, so that the two lengths of the reserve loop run parallel to one another and the displacement path for the loop-laying roller is half the difference between the drawn and supplied length of the continuous material.
- the gears are preferably all of the same size and have the same number of teeth. It is also preferable that the effective diameter of the gear wheels corresponds to the diameter of the corresponding feed roller, the take-off roller and the loop laying roller. Different roller sizes can also be selected, the sizes of the corresponding gear wheels being selected in a suitable manner.
- the above-mentioned object is achieved in an advantageous manner in that the endless material is guided over at least one further reversing roller, which is arranged in such a way that a further loop of the endless material is formed.
- the continuous material can advantageously be processed in two or more layers one above the other. For example, this makes it possible to arrange a flat punch in such a way that at least two layers of the continuous material are punched simultaneously.
- the position of the further reversing roller is preferably adjustable, so that the layers come into proper coincidence in accordance with the size of the pattern or the spacing between the punchings in the continuous material, in particular with the web material.
- Such an arrangement has the advantage that the Bruenma ⁇ which is TERIAL performed in the loop is Movable Material- is possible, for example, at constant gleich ⁇ Stanzgeschwind ' .
- the further reversing rollers are driven synchronously with the take-off roller of the preceding compensating device, ie the rollers are either mechanically coupled or they each have their own drives which are controlled in a suitable manner. As a result, high transport speeds can be achieved.
- Figure 1 is a side view of a first computer-controlled embodiment
- Figure 2 is a schematic diagram for a coupling according to the invention by means of a differential gear
- Figure 3 is a side view of another embodiment of the invention
- FIGS. 4a and 4b show a side view of a further independent solution of the invention with an example for a punching pattern
- FIG. 5 shows a side view of a further development of the device according to FIG. 4.
- the forced control of a loop laying roller 30 is carried out by a computer 40.
- a Programm ⁇ control which is' an input unit 41 input to the computer 40, both the feed speed of a feed roller 10 and the take-off speed of a take-off roll are controlled 20th
- Motors 12 and 22 are provided as drives, which are preferably designed as stepper motors.
- the two drives 12, 22 for the feed and take-off roller can optionally be moved forwards and backwards and at different speeds by the control of the computer 40.
- a web material 1 is guided over the feed roller 10, the loop laying roller 30 and the take-off roller 20.
- Loop laying roller 30 can be displaced transversely to its axis with an adjusting device in such a way that the reserve loop of the endless material is optionally larger and smaller.
- the computer 40 determines the required displacement movement from the feed and take-off speed and controls one for the adjustment device of the loop laying roller provided actuator 32.
- the servomotor 32 is preferably designed as a stepper motor and drives a spindle gear, the spindle 33 of which adjusts a nut 34 connected to the axis 31 of the loop laying roller 30 in a suitable manner.
- a spindle gear the spindle 33 of which adjusts a nut 34 connected to the axis 31 of the loop laying roller 30 in a suitable manner.
- a possible mechanical coupling for the forced control is shown in Figure 2.
- a differential gear 60 is used, the first shaft 61 of which is connected non-rotatably or with a suitable transmission ratio to the feed roller and the second shaft 62 of which is non-rotatably connected or with a suitable transmission ratio to the take-off roller.
- the output shaft 63 of the differential gear 60 rotates at a speed which corresponds to the difference in the speed of the first shaft 61 and the second shaft 62.
- the output shaft 63 is preferably connected directly to the adjusting device for the loop laying roller.
- FIG. 3 An alternative embodiment of the invention is shown in FIG. 3, in which three reversing wheels 110, 120, 130 are arranged symmetrically to the feed roller 10, the take-off roller 20 and the loop laying roller 30.
- the axes 111, 121 of two reversing wheels 110, 120 are fixed in parallel and arranged at a distance from the feed roller 10 and the take-off roller 20.
- the axis 131 of the third reversing wheel 130 is rigidly connected to the axis 31 of the loop laying roller 30.
- the loop laying roller 30 and the third reversing wheel .130 can be displaced together along a connecting line between the feed or withdrawal roller 10 20 and the two stationary reversing rollers 110, 120.
- All rollers have a gear wheel 15, 25, 35, 115, 125, 135 at both ends.
- the effective diameter of these 7th gear wheels is the same as that of the feed, take-off and looping rollers.
- the distance between the feed roller 10 and the take-off roller 20 and the distance between the two reversing wheels 110, 120 are selected to be equal to the diameter of the rollers.
- the continuous material 1 is between the feed roller 10 and the take-off roller 20 in the form of a reserve loop around the
- This reserve loop corresponds to the first loop of the toothed belt and becomes either larger or smaller depending on the feed speed v and the take-off speed v.
- the second loop of the timing belt 50 which over the
- the distance between the feed roller 10 or the take-off roller 20 and the two fixed reversing wheels 110, 120 is selected so that the greatest length difference occurring between the supplied and the withdrawn material can be compensated.
- FIG. 4a shows an independent solution of the invention, in which the continuous material 1 is continuously fed to a first compensating device 2 and is delivered to the punching units 80 to 82 and 85 to 87 in batches on the output side thereof.
- the continuous material 1 is machined by the punches 80, 81 and 85, 86 at standstill and then fed to a second compensating device 3, from which the continuous material is continuously drawn off and wound up on the output side, for example.
- the direction of movement of the continuous material 1 is reversed by means of reversing rollers 70, 71, 72 so that it is punched by the punch 80, 81 in two layers and by the punch 85, 86 in one layer.
- the distances between the reversing rollers 71, 72 to the first punching unit 80, 81 and between the two punching units are set, for example, in such a way that the punching pattern shown in FIG. 4b is produced.
- the round holes 88 are punched out by the punch 85, 86 and the rectangular holes 83 by the punch 80, 81.
- the distance between the round holes 88 corresponds to the feed or the batchwise forward transport of the endless material 1 and the distance between the punch 80, 81 via the reversing rollers 71, 72 and back is a multiple of half the feed.
- FIG. 5 shows a development of the invention with which the continuous material 1 is punched in three layers.
- the direction of movement of the continuous material is reversed twice by means of reversing rollers 90, 91, 92, 93 and guided in three layers through the punch 100, 101, so that three identical punchings are carried out simultaneously with one feed and punching operation.
- the drives 82, 87, 102 are preferably of the type shown in FIGS.
- FIGS. 4a and 5 control punching units controlled by a computer and then activated together when the endless material has come to a standstill.
- the drives of the take-off roller 20 of the first compensation device 2 and the feed roller 10 of the second compensation device 3 are either mechanically coupled or are controlled synchronously by the computer.
- the speed of the take-off roller 20 of the first compensation device 2 can deviate slightly from the speed of the feed roller 10 of the second compensation device 3 in order to compensate for changes in length of the continuous material 1 between the two compensation devices 2 and 3.
- This allows an expansion of the continuous material 1 (e.g. when cross-perforating) or a compression (e.g. when creasing in the transverse direction) to be compensated and the web tension can be maintained.
- the compensation device has the advantage that the most varied types of movement can be adapted to one another without the material tension present in the endless material and thus the pressure and punch register being lost.
- the material movement present at the input of the device can be converted into any other movement, for example a continuous movement, such as when unwinding the continuous material, a step-by-step forward movement, such as in flat punching, or in a combined forward and short backward movement, such as in rotary printing, for example with a three-quarter cliché, or with rotary punching.
- These movements can then be converted in a further compensating device, for example into a continuous movement as when winding up.
- a large number of such compensation devices can be used in succession in order to to generate types between two successive compensation devices.
- a continuous take-off speed is generally generated for winding, but batch-wise delivery is also possible, for example when cutting or folding sheets.
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Advancing Webs (AREA)
Abstract
Description
Vorrichtung zum Bearbeiten von Endlosbahnenmaterial mit mehrere Bearbeitungsstationen mit unterschiedlicher Bearbeitungsge- schwindigkeit _____Device for processing continuous web material with several processing stations with different processing speeds _____
Die Erfindung betrifft eine Vorrichtung zum Bearbeiten von Endlosmaterial, insbesondere von Bahnenmaterial zwischen mehreren Bearbeitungsstationen mit unterschiedlicher Zuführ- und Abzugsgeschwindigkeit gemäß dem Oberbegriff der An¬ sprüche 1 und 4.The invention relates to a device for processing continuous material, in particular web material between several processing stations with different feed and take-off speeds according to the preamble of claims 1 and 4.
Beim Bedrucken, Perforieren, Lochen oder Stanzen von Bahnen¬ material, beispielsweise Papier und insbesondere zur Her¬ stellung von Etiketten, wird das Bahnenmaterial im allge¬ meinen von mehreren Bearbeitungswerken in der vorgenannten Weise bearbeitet. Da die unterschiedlichen Bearbeitungswerke auch mit unterschiedlichen Geschwindigkeiten und Bewegungs¬ abläufen arbeiten, ist eine entsprechende Anpassung der Ge¬ schwindigkeit des Bahnenmaterials erforderlich. So werden in einer kombinierten Druck- und Stanzmaschine das Bahnen- material beispielsweise kontinuierlich von der Vorratsrolle abgewickelt und einer Aufwickelrolle zugeführt. Zum Rotations¬ drucken oder -stanzen wird das Bahnenmaterial abwechselnd mit einer der Umfangsgeschwindigkeit des Rotationswerkzeuges ange glichenen Geschwindigkeit transportiert und damit die Drucke direkt aufeinander anschließen in den Klischeeleerräumen wieder angehalten bzw. unter Umständen geringfügig zurückge¬ zogen. Darüber hinaus sind bei Werkzeugen, wie Flachstanzen, ein schrittweises Transportieren des Bahnenmaterials erforder lich, d.h. schnelle Vorwärtstransportbewegungen mit Still- standspausen wechseln nacheinander ab.When printing, perforating, punching or punching sheet material, for example paper and in particular for producing labels, the sheet material is generally processed by a plurality of processing plants in the aforementioned manner. Since the different processing plants also work with different speeds and motion sequences, a corresponding adjustment of the speed of the web material is necessary. In a combined printing and punching machine, for example, the web material is continuously unwound from the supply roll and fed to a winding roll. For rotary printing or punching, the web material is alternately transported at a speed which is matched to the peripheral speed of the rotary tool, and the prints are then directly connected to one another in the cliché empty spaces or, in some circumstances, slightly withdrawn. In addition, tools such as flat punching require the sheet material to be transported step by step, i.e. rapid forward transport movements with idle breaks alternate one after the other.
Aus der DE-OS 26 37 248 ist eine Zuführvorrichtung bekannt, mit der ein Druckträger von einer diskontinuierlich drucken¬ den Druckvorrichtung zu einer kontinuierlich abziehenden Ver- arbeitungseinheit .geführt wird. Dazu ist eine Speichervor¬ richtung zwischen der Druckvαrrichtung und der Verarbeitungs- einheit vorgesehen, so daß während des Druckvorgangs,bei dem der Druckträger für das Drucken stillsteht und gleichzeitig die Verarbeitungseinheit den Druckträger weiter kontinuierlich abzieht, ein Teil des bandförmigen Druckträgers aus der Speichervorrichtung abgezogen wird. Danach wird der Druck- träger schlaufenförmig in der Speichervorrichtung nachge¬ zogen.From DE-OS 26 37 248 a feed device is known with which a printing medium is fed from a discontinuously printing printing device to a continuously withdrawing processing unit. For this purpose, a storage device is provided between the printing device and the processing unit, so that during the printing process in which the print carrier for printing stands still and at the same time the processing unit continues to continuously withdraw the print carrier, a part of the band-shaped print carrier is withdrawn from the storage device. The print carrier is then drawn in the form of a loop in the storage device.
Die DE-PS 944 133 beschreibt eine kombinierte Druck- und Stanz¬ maschine, die ein Rotationsdruckwerk und ein nachgeschaltetes Flachstanzwerk aufweist. Da bei Rotationsdruckwerken der Druck¬ zylinder nur zu einem Teil mit der Druckform belegt ist, wird, um die Drucke auf der Druckbahn trotzdem unmittelbar anein¬ ander anschließen zu lassen, ein Schleifenlegschlitten vor¬ gesehen. Dieser wird von der zu bedruckenden Bahn vor und hinter der Druckpartie umschlungen, nd durch seinen periodi¬ schen Hin- und Hergang kann die dazwischen liegende zu be¬ druckende Bahn abwechselnd mit Druckgeschwindigkeit und mit geringerer Geschwindigkeit bewegt werden. Für das nur absatz¬ weise arbeitende Stanzwerk muß mittels einer Schwinge eine sich immer wieder aufholende Schlaufe der Papierbahn gebildet werden. Der Schleif nlegschlitten und die Schwinge sind so miteinander gekoppelt, daß die Bahndurchlaufgeschwindigkeit an dem Stanzwerk und dem Rotationswerk im Mittel gleich sind. Diese Vorrichtung hat den Nachteil, daß die Schlaufe zwischen dem Rotationsdruckwerk und dem Flachstanzwerk lose durch¬ hängt und entsprechende Maßnahmen erforderlich sind, damit die Bahnspannung und somit der Passer zwischen Druck- und Stanzwerk vor und nach der Schlaufe entsprechend eingehalten werden.DE-PS 944 133 describes a combined printing and punching machine which has a rotary printing unit and a downstream flat stamping unit. Since the printing cylinder is only partially covered with the printing form in rotary printing units, a loop laying carriage is provided in order to nevertheless allow the prints on the printing web to be connected directly to one another. This is wrapped in front of and behind the printing section by the web to be printed, and due to its periodic back and forth movement, the web to be printed in between can be moved alternately at printing speed and at a lower speed. For the punching unit, which only works in sections, a loop of the paper web that has to be repeated must be formed by means of a rocker. The grinding nlegschlitten and the rocker are coupled to each other so that the web throughput speed on the punching and rotating machines are the same on average. This device has the disadvantage that the loop between the rotary printing unit and the flat punching unit loosely sags and appropriate measures are required so that the web tension and thus the register between the printing and punching unit are appropriately maintained before and after the loop.
Die DE-AS 25 23 639 beschreibt eine Maschine, die mehrereDE-AS 25 23 639 describes a machine that has several
Rotationsdruckwerke mit einem Rotationsstanzwerk kombiniert. Dazu ist ein Schleifenlegschlitten vorgesehen, mit dessen Hilfe die zu bedruckende Bahn entsprechend der Größe der Druck¬ form und des Druckzylinders bzw. des S anzZylinders abwechselnd mit Druckgeschwindigkeit und mit geringer Geschwindigkeit be¬ wegt wird. Dabei wird der Schlitten mittels Kurvenscheiben von einem Antriebsblock hin- und herbewegt. Der Antriebsblock, die Rotationsdruckwerke und das Rotationsstanzwerk werden mit gleicher Drehzahl bzw. aneinander angepaßten Drehge¬ schwindigkeiten bewegt Diese Vorrichtung hat den Nachteil, daß bei einer Änderung der Vorschubgrößen die Kurvenschei¬ ben ausgetauscht werden müssen, damit die Weglänge, die der Schleifenlegschlitten ausgleichen muß, angepaßt ist. Ferner hat diese Vorrichtung den Nachteil, daß die Stanz¬ zeit und Transportgeschwindigkeit des Bahnenmaterials nur bedingt durch unterschiedliche Exzenter ausgeglichen werden kann.Rotary printing units combined with a rotary stamping unit. For this purpose, a loop laying carriage is provided, with the aid of which the web to be printed is moved alternately at printing speed and at low speed in accordance with the size of the printing form and the printing cylinder or the cutting cylinder. The slide is moved by means of cams from a drive block back and forth. The drive block, the rotary printing units and the rotary punching unit are moved at the same speed or at mutually adapted speeds. This device has the disadvantage that when the feed sizes are changed, the cams have to be exchanged so that the path length that the loop-laying carriage has to compensate for, is adjusted. Furthermore, this device has the disadvantage that the punching time and transport speed of the web material can only be compensated for to a limited extent by different eccentrics.
Aus der US-PS .4 009 814 ist ein Wickelspeicher für Bahnen¬ material, wie Toilettenpapier, bekannt, bei dem für die Zwischenspeicherung zwischen zwei feststehenden Walzengrup¬ pen ein ümlenkwalzenträger in Abhängigkeit von den Reak¬ tionsgeschwindigkeiten zwischen Papiereinlauf und -auslauf hin- und herbewegbar ist. Dieser Speicher soll möglichst groß ausgebildet sein, aber andererseits das leicht reißende Papier nicht zu stark belasten. 'Die Genauigkeitsanforderun¬ gen sind außerordentlich gering.From US Pat. No. 4,009,814 a roll storage for web material, such as toilet paper, is known, in which a deflecting roll carrier for the intermediate storage between two fixed roll groups, depending on the reaction speeds between the paper inlet and outlet, is moved back and forth is movable. This memory should be as large as possible, but on the other hand should not overload the easily tearing paper. 'The gen Genauigkeitsanforderun¬ are extremely low.
Der Erfindung liegt die Aufgabe zugrunde, unterschiedliche Bewegungsabläufe des bahnenförmigen Materials zwischen den Bearbeitungsstationen auszugleichen und dabei eine hohe Passer¬ genauigkeit zu erzielen.The invention has for its object to compensate for different movements of the web-shaped material between the processing stations and to achieve a high register accuracy.
Diese Aufgabe wird gelöst mit den Merkmalen des Patentan- spruchs 1 oder 4.This object is achieved with the features of patent claim 1 or 4.
Die Erfindung geht dabei von dem Grundgedanken aus, das Endlosmaterial über eine zwangsgesteuerte Schleifenlegwalze zu führen und dadurch eine Reserveschlaufe auszubilden, deren Spannung immer konstant ist. Die Zwangssteuerung der Schleifen- legwalze erfolgt aufgrund der Ermittlung der Geschwindig¬ keitsdifferenz zwischen Zufuhr und Abzug. Die erfindungsgemäße Vorrichtung gestattet einen voll variablen Geschwindigkeitsausgleich der unterschiedlichsten Bewegungsarten des Endlosmaterials, d.h. mit ihr können unterschiedliche Bewegungsarten des Bahnenmaterials aneinander angepaßt werden.The invention is based on the basic idea of passing the continuous material over a positively controlled loop laying roller and thereby forming a reserve loop, the tension of which is always constant. The loop laying roller is positively controlled on the basis of the determination of the speed difference between feed and take-off. The device according to the invention permits a fully variable speed compensation of the most varied types of movement of the continuous material, ie it can be used to adapt different types of movement of the web material to one another.
Dazu wird das Endlosmaterial in Form einer Reserveschlaufe über eine quer zu ihrer Achse verschiebbare Schleifenleg¬ walze geführt, die so verschoben wird, daß entsprechend der ankommenden Geschwindigkeit und der abgehenden Ge¬ schwindigkeit des Endlosmaterials die Spannung in der Reserveschlaufe vorzugsweise konstant bleibt.For this purpose, the endless material in the form of a reserve loop is guided over a loop laying roller which can be moved transversely to its axis and which is displaced such that the tension in the reserve loop preferably remains constant in accordance with the speed and the outgoing speed of the endless material.
In Abhängigkeit von der Geschwindigkeitsdifferenz wird dabei die Schlaufe entweder verkleinert oder vergrößert. Als Rand¬ bedingungen müssen lediglich berücksichtigt werden, daß die gesamte zugeführte Länge des Endlosmaterials im Zeitmittel der gesamten abgezogenen Länge des Eπdlosmaterials entspricht und daß der für die Schleifenlegwalze vorzusehende Ver¬ schiebeweg an die größte Geschwindigkeitsdifferenz bzw. die größte auszugleichende Längendifferenz angepaßt ist.Depending on the speed difference, the loop is either reduced or enlarged. As a boundary condition, all that needs to be taken into account is that the total length of the continuous material supplied corresponds over time to the total length of the continuous material and that the displacement path to be provided for the loop laying roller is adapted to the greatest speed difference or the greatest length difference to be compensated.
Die erfindungsgemäße Vorrichtung hat den Vorteil, daß durch die ZwangsSteuerung der Verschiebebewegung der Schleifen- legwalze, die an die ankommende Geschwindigkeit und an die abgehende Geschwindigkeit angepaßt ist, immer eine definierte Spannung in der Reservese laufe erhalten bleibt, wobei ein Reißen des Ξndlosmaterials oder ein unerwünschtes Durchhängen vermieden wird. Sie eignet sich vorzugsweise zum Einsatz in kombinierten Druck- und Stanzmaschinen, zum Anpassen der unterschiedlichen Bewegungsarten des Bahnenmaterials, beispielsweise einem Druckträger, der rotativ bedruckt und flach gestanzt wird um Etiketten herzustellen.The device according to the invention has the advantage that a defined tension in the reserve is always maintained due to the positive control of the sliding movement of the loop laying roller, which is adapted to the incoming speed and the outgoing speed, with a tearing of the continuous material or an undesired one Sagging is avoided. It is preferably suitable for use in combined printing and die-cutting machines, for adapting the different types of movement of the web material, for example a print carrier that is rotatively printed and punched flat to produce labels.
Gemäß einer besonderen Ausführungsform der Erfindung erfolgt die ZwangsSteuerung mit Hilfe eines Rechners, der entspre- chend der ankommenden und der abgehenden Geschwindigkeit des Endlosmaterials die notwendige Verschiebebewegung für die Schleifenlegwalze steuert. Vorzugsweise wird die Schleifen¬ legwalze dabei von einem Versteilmotor, beispielsweise einem Schrittmotor bzw. Servoantrieb über eine Verstelleinrichtung, wie ein Schneckengetriebe, Zahngestänge cder Kugelrollspindel, rechnergesteuert durchgeführt. Die Information über die Zuführgeschwindigkeit und dieAccording to a special embodiment of the invention, the forced control is carried out with the aid of a computer which chend the incoming and outgoing speed of the continuous material controls the necessary displacement movement for the loop laying roller. The loop-laying roller is preferably computer-controlled by an adjusting motor, for example a stepper motor or servo drive via an adjusting device, such as a worm gear, toothed linkage or ball screw spindle. The information about the feeding speed and the
Abzugsgeschwindigkeit erhält der Rechner von dafür geeig¬ neten Sensoren.The computer receives take-off speed from sensors suitable for this.
Gemäß einer besonderen Weiterbildung dieser Ausführungsform wird die Zuführgeschwindigkeit und die Abzugsgeschwindigkeit programmgesteuert vom Rechner durchgeführt, indem dieser Steuersignale an eine Zuführ- bzw. Abzugseinrichtung liefert.According to a special development of this embodiment, the feed speed and the take-off speed are carried out under program control by the computer, in that the latter delivers control signals to a feed or take-off device.
Gemäß einer weiteren Ausführungsform der Erfindung wird die ZwangsSteuerung mit Hilfe einer mechanischen Kopplung zwischen einer Versteileinrichtung für die Schleifenlegwalze und einer Zuführwalze und einer Abzugswalze für das Endlosmaterial durch- geführt. Die Versteileinrichtung ist vorzugsweise so ausge¬ bildet, daß die Schleifenlegwalze quer zu ihrer Achse parallel entlang einer Linie verschiebbar ist z.B. mit Hilfe eines Schneckengetriebes oder eines Schraubenantriebs, wobei die jeweiligen Enden der Achse gleichzeitig in der gleichen Richtung bewegt werden. Für die mechanische Kopplung zwischen der Verstelleinrichtung und der Zuführ- bzw. Abzugswalze ist vorzugsweise eine spielfreie und starre Anbindung vorzu¬ sehen, wobei die Verschiebegeschwindigkeit und die Zuführ¬ bzw. Abzugsgeschwindigkeit nach einer bestimmten gesetz- mäßigen Beziehung im Verhältnis stehen.According to a further embodiment of the invention, the positive control is carried out with the aid of a mechanical coupling between an adjusting device for the loop laying roller and a feed roller and a take-off roller for the continuous material. The adjusting device is preferably designed in such a way that the loop laying roller can be displaced parallel to a line parallel to its axis, e.g. by means of a worm gear or a screw drive, the respective ends of the axis being moved simultaneously in the same direction. A play-free and rigid connection is preferably to be provided for the mechanical coupling between the adjustment device and the feed or take-off roller, the displacement speed and the feed or take-off speed being related in accordance with a certain legal relationship.
Gemäß einer alternativen Ausführungsform der Erfindung erfolgt die mechanische Kopplung mit Hilfe eines Differentialgetrie¬ bes. Dabei ist die Zuführwalze und die Abzugswalze jeweils mit einer ersten und zweiten Welle des Differentialgetriebes verbunden und die Abtriebswelle des Differentialgetriebes wird an die Verstelleinrichtung für die Schleifenlegwalze angeschlossen. Das Verhältnis der Übersetzungen ist so zu wählen, daß die sich an der Abtriebswelle ergebende Differenz der Geschwindigkeiten der Zuführwalze und der Abzugswalze der für die Verschiebebewegung der Schleifenlegwalze erfor¬ derlichen Geschwindigkeit entspricht.According to an alternative embodiment of the invention, the mechanical coupling is carried out with the aid of a differential gear. The feed roller and the take-off roller are each connected to a first and second shaft of the differential gear and the output shaft of the differential gear is connected to the adjustment device for the loop laying roller. The ratio of the gear ratios is to be chosen so that the difference between the speeds of the feed roller and the take-off roller resulting on the output shaft corresponds to the speed required for the sliding movement of the loop laying roller.
Gemäß einer weiteren alternativen Ausführungsform der Erfindung werden vorzugsweise symmetrisch zu den Anordnungen der Zuführwalze, der Abzugswalze und der Schleifenlegwalze drei Umkehrwalzen angeordnet. Zwei Umkehrwalzen sind dabei vorzugsweise mit ihren Achsen parallel und im Abstand zu der Zuführ- bzw. der Abzugswalze angeordnet. Der Abstand zu diesen Umkehrwalzen ist vorteilhafterweise gleich dem Abstand zwischen der Zuführ- und der Abzugswalze. Die dritte Umkehrwalze ist relativ zu der Schleifenlegwalze fest und gemeinsam mit dieser entlang einer Verbindungslinie zwischen der Zuführ- bzw. Abzugswalze und den fest angeordneten Umkehrwalzen beweglich. Die Schleifenlegwalze und die dritte Umkehrwalze werden dabei gemeinsam von der Verstell¬ einrichtung entsprechend der Zuführ- und Abzugsgeschwindig¬ keit verstellt. Dabei sind sämtliche Walzen über einen"gemeinsamen Transmissionsantrieb miteinander verbunden. Dadurch wird erreicht, daß Drehbewegungen der Zuführ- bzw. Abzugswalze direkt und unmittelbar auf eine der beiden ortsfesten Umkehrwalzen übertragen werden und als Folge die gemeinsam bewegliche Anordnung der Schleifenlegwalze und der dritten Q Umkehrwalze entlang des Verschiebewegs verstellt wird.According to a further alternative embodiment of the invention, three reversing rollers are preferably arranged symmetrically to the arrangements of the feed roller, the take-off roller and the loop laying roller. Two reversing rollers are preferably arranged with their axes parallel and at a distance from the feed or take-off roller. The distance to these reversing rollers is advantageously equal to the distance between the feed roller and the take-off roller. The third reversing roller is fixed relative to the loop laying roller and, together with the latter, is movable along a connecting line between the feed or removal roller and the fixedly arranged reversing rollers. The Schleifenlegwalze and the third reverse roller will be supported by the adjusting device according to the ¬ ¬ ness feeding and Abzugsgeschwindig adjusted together. All the rollers are connected to one another via a "common transmission drive. This ensures that rotary movements of the feed or take-off roller are transmitted directly and immediately to one of the two fixed reversing rollers and as a result along the jointly movable arrangement of the loop laying roller and the third Q reversing roller the displacement path is adjusted.
Gemäß einer vorteilhaften Weiterbildung der Erfindung weisen die Zuführwalze, die Abzugswalze, die Schleifenleg¬ walze und die drei Umkehrwalzen jeweils an mindestens 0 einem ihrer Enden ein Zahnrad auf. Als Transmissions¬ antrieb wird ein durchgehender sämtliche Zahnräder um¬ schlingender Zahnriemen vorgesehen. Dabei wird eine erste Schlaufe, deren Länge der Reserveschlaufe des Endlos- materials entspricht zwischen den Zahnrädern der Schleifen¬ 5 legwalze und der Zuführ- und Abzugswalze und eine zweite Schlaufe zwischen den Zahnrädern der Umkehrwalze und den ortsfesten Umkehrwalzen gebildet. Der Zahnriemen ist vorzugsweise stahlarmiert und nicht dehnbar ausgebildet. Dadurch ist gewährleistet, daß der Abstand bzw. die Größe der Reserveschlaufe immer in einem definierten Bezug zu der ankommenden und der abgehenden Geschwindigkeit steht, wobei einerseits die erste Schleife vergrößert und die zweite Schleife im gleichen Maße verkleinert oder die erste Schleife verkleinert und die zweite Schleife im gleichen Maße vergrößert wird.According to an advantageous development of the invention, the feed roller, the take-off roller, the loop laying roller and the three reversing rollers each have a gear wheel on at least one of their ends. A continuous toothed belt that wraps around all the gears is provided as the transmission drive. In this case, a first loop, the length of which corresponds to the reserve loop of the endless material between the gear wheels of the looping roller and the feed and take-off roller, and a second loop between the gear wheels of the reversing roller and the fixed reversing rollers. The toothed belt is preferably steel-reinforced and not designed to be stretchable. This ensures that the distance or the size of the reserve loop is always in a defined relationship to the incoming and outgoing speed, whereby on the one hand the first loop is enlarged and the second loop is reduced to the same extent or the first loop is reduced and the second loop is enlarged to the same extent.
Erfindungsgemäß ist der Verschiebeweg für die gemeinsam bewegliche Schleifenlegwalze und Umkehrwa-lz , d.h. der Abstand zwischen der Zuführ- bzw. Abzugswalze und den beiden ortsfesten Umkehrwalzen, so gewählt, daß die größte Differenz zwischen den Bewegungsgeschwindigkeiten des abzuziehenden und zuzuführenden Endlosmaterials ausgleichbar ist. Dabei wird die zugeführte Länge des Ξndlosmaterials entweder als Schlaufe gepuffert, wenn die Abzugsgeschwindigkeit klei- ner ist, oder das Endlosmaterial aus dem Materialspeicher, d.h. der Reserveschlaufe entnommen, wenn die Zuführgeschwin¬ digkeit kleiner ist, um die Bahnspannung konstant zu halten.According to the invention, the displacement path for the jointly movable loop laying roller and reversing roller, i.e. the distance between the feed or take-off roller and the two fixed reversing rollers, chosen so that the greatest difference between the speeds of movement of the continuous material to be drawn off and fed can be compensated. The supplied length of the continuous material is either buffered as a loop if the take-off speed is lower, or the continuous material from the material storage, i.e. taken from the reserve loop when the feed speed is lower in order to keep the web tension constant.
In einer bevorzugten Ausführungsform sind die Durchmesser der Zuführwalze, der Abzugswalze und der Schleifenlegwalze gleich. Dabei wird vorteilhafterweise der Abstand zwischen der Zuführ- und Abzugswalze gleich dem Durchmesser gewählt, so daß die beiden Längen der Reserveschlaufe zueinander parallel verlaufen und der Verschiebeweg für die Schleifen¬ legwalze halb so groß wie die Differenz aus abgezogener und zugeführter Länge des Endlosmaterials ist.In a preferred embodiment, the diameters of the feed roller, the take-off roller and the loop laying roller are the same. The distance between the feed and take-off roller is advantageously chosen to be equal to the diameter, so that the two lengths of the reserve loop run parallel to one another and the displacement path for the loop-laying roller is half the difference between the drawn and supplied length of the continuous material.
Vorzugsweise sind die Zahnräder alle gleich groß und weisen die gleiche Zahnzahl auf. Bevorzuσt ist ferner, daß der Wirk¬ durchmesser der Zahnräder dem Durchmesser der entsprechenden Zuführ¬ walze, der Abzugswalze.und der Schleifenlegwalze entspricht. Ebenso können unterschiedliche Walzengrößen gewählt werden, wobei die Größen der entsprechenden Zahnräder in geeigneter Weise ausgewählt werden.The gears are preferably all of the same size and have the same number of teeth. It is also preferable that the effective diameter of the gear wheels corresponds to the diameter of the corresponding feed roller, the take-off roller and the loop laying roller. Different roller sizes can also be selected, the sizes of the corresponding gear wheels being selected in a suitable manner.
Gemäß der Erfindung wird die oben genannte Aufgabe in vor¬ teilhafter Weise gelöst, indem das Endlosmaterial über min¬ destens eine weitere Umkehrwalze geführt wird, die so ange¬ ordnet ist, daß eine weitere Schlaufe des Endlosmaterials ausgebildet wird. Dadurch kann in vorteilhafter Weise das Endlosmaterial zweilagig oder mehrlagig übereinander bear¬ beitet werden. Beispielsweise ist dadurch möglich, eine Flachstanze so anzuordnen, daß mindestens zwei Lagen des Endlosmaterials gleichzeitig gestanzt werden.According to the invention, the above-mentioned object is achieved in an advantageous manner in that the endless material is guided over at least one further reversing roller, which is arranged in such a way that a further loop of the endless material is formed. As a result, the continuous material can advantageously be processed in two or more layers one above the other. For example, this makes it possible to arrange a flat punch in such a way that at least two layers of the continuous material are punched simultaneously.
Vorzugsweise ist die Position der weiteren Umkehrwalze ein¬ stellbar, so daß entsprechend der Größe der Muster bzw. der Abstände zwischen den Stanzungen im Endlosmaterial, insbe¬ sondere beim Bahnenmaterial, die Lagen richtig in Deckung kom¬ men.The position of the further reversing roller is preferably adjustable, so that the layers come into proper coincidence in accordance with the size of the pattern or the spacing between the punchings in the continuous material, in particular with the web material.
Eine derartige Anordnung hat den Vorteil, daß das Bahnenma¬ terial, das in der Schlaufe geführt ist, gleichzeitig mehr¬ lagig bearbeitet wird, wodurch beispielsweise bei gleich¬ bleibender Stanzgeschwind'igkeit einer Flachstanze eine ins- gesamt höhere Transportgeschwindigkeit für das Bahnenmaterial- möglich ist. Bei einer vorteilhaften Weiterbildung der Er¬ findung werden die weiteren Umkehrwalzen synchron mit der Abzugswalze der vorangehenden Ausgleichsvorrichtung ange¬ trieben, d.h. die Walzen sind entweder mechanisch gekoppelt oder sie weisen jeweils eigene Antriebe auf, die in geeig¬ neter Weise angesteuert werden. Dadurch sind hohe Transport¬ geschwindigkeiten erreichbar.Such an arrangement has the advantage that the Bahnenma¬ which is TERIAL performed in the loop is mehr¬ ply processed simultaneously, whereby accuracy of a flat punch a total of higher transport speed for the Bahnenmaterial- is possible, for example, at constant gleich¬ Stanzgeschwind ' . In an advantageous development of the invention, the further reversing rollers are driven synchronously with the take-off roller of the preceding compensating device, ie the rollers are either mechanically coupled or they each have their own drives which are controlled in a suitable manner. As a result, high transport speeds can be achieved.
Diese zuletzt genannten Erfindungsmerkmale können in Kombi- nation mit der Lösung gemäß den Ansprüchen 1 bis 6 aber auch unabhängig von diesen verwirklicht werden und sind dement¬ sprechend auch selbständig beansprucht (vgl. Ansprüche 7 bis 10) . Die Erfindung wird nachstehend anhand der Figuren näher er¬ läutert. Es zeigen:These last-mentioned inventive features can, however, also be implemented in combination with the solution according to claims 1 to 6 independently of them and are accordingly also claimed independently (cf. claims 7 to 10). The invention is explained in more detail below with reference to the figures. Show it:
Figur 1 eine Seitenansicht einer ersten rechnergesteuerten Ausführungsform; Figur 2 ein Prinzipbild für eine erfindungsgemäße Kopplung mittels eines Differentialgetriebes; Figur 3 eine Seitenansicht einer weiteren Ausführungsform der Erfindung; Figuren 4a und 4b eine Seitenansicht einer weiteren selb- ständigen Lösung der Erfindung mit einem Beispiel für ein Stanzmuster und Figur 5 eine Seitenansicht einer Weiterbildung der Vorrich¬ tung gemäß Figur 4.Figure 1 is a side view of a first computer-controlled embodiment; Figure 2 is a schematic diagram for a coupling according to the invention by means of a differential gear; Figure 3 is a side view of another embodiment of the invention; FIGS. 4a and 4b show a side view of a further independent solution of the invention with an example for a punching pattern, and FIG. 5 shows a side view of a further development of the device according to FIG. 4.
Bei der erfindungsgemäßen Ausführungsform gemäß Figur 1 wird die ZwangsSteuerung einer Schleifenlegwalze 30 von einem Rechner 40 durchgeführt. Entsprechend einer Programm¬ steuerung, die über 'eine Eingabeeinheit 41 dem Rechner 40 eingegeben wird, werden sowohl die Zuführgeschwindigkeit einer Zuführwalze 10 und die Abzugsgeschwindigkeit einer Abzugswalze 20 gesteuert. Als Antrieb sind jeweils Motoren 12 und 22 vorgesehen, die vorzugsweise als Schritt¬ motoren ausgeführt sind. Die beiden Antriebe 12, 22 für die Zuführ- und Abzugswalze können wahlweise vorwärts und rückwärts und mit unterschiedlichen Geschwindigkeiten durch die Steuerung des Rechners 40 bewegt werden. Über die Zuführwalze 10, die Schleifenlegwalze 30 und die Abzugswalze 20 ist ein Bahnenmaterial 1 geführt. Die parallel zu der Zuführ- und Abzugswalze 10, 20 angeordneteIn the embodiment according to the invention according to FIG. 1, the forced control of a loop laying roller 30 is carried out by a computer 40. According to a Programm¬ control which is' an input unit 41 input to the computer 40, both the feed speed of a feed roller 10 and the take-off speed of a take-off roll are controlled 20th Motors 12 and 22 are provided as drives, which are preferably designed as stepper motors. The two drives 12, 22 for the feed and take-off roller can optionally be moved forwards and backwards and at different speeds by the control of the computer 40. A web material 1 is guided over the feed roller 10, the loop laying roller 30 and the take-off roller 20. The one arranged parallel to the feed and take-off roller 10, 20
Schleifenlegwalze 30 ist quer zu ihrer Achse mit einer Verstelleinrichtung derart verschiebbar, daß die Reserve¬ schlaufe des Endlos ate ials wahlweise größer und kleiner wird. Der Rechner 40 ermittelt aus der Zuführ- und Abzugs- geschwindigkeit die erforderliche Verschiebebewegung und steuerteinenfür die Verstelleinrichtung der Schleifen- legwalze vorgesehenen Stellmotor 32 an. Der Stellmotor 32 ist vorzugsweise als Schrittmotor ausgeführt und treibt ein Spindelgetriebe an, dessen Spindel 33 eine mit der Achse 31 der Schleifenlegwalze 30 verbundene Mutter 34 in geeigneter Weise verstellt. Vorzugsweise ist dasLoop laying roller 30 can be displaced transversely to its axis with an adjusting device in such a way that the reserve loop of the endless material is optionally larger and smaller. The computer 40 determines the required displacement movement from the feed and take-off speed and controls one for the adjustment device of the loop laying roller provided actuator 32. The servomotor 32 is preferably designed as a stepper motor and drives a spindle gear, the spindle 33 of which adjusts a nut 34 connected to the axis 31 of the loop laying roller 30 in a suitable manner. Preferably that is
Spindelgetriebe an beiden Enden der Schleifenlegwalze vorgesehen.Spindle gear provided at both ends of the loop laying roller.
Eine mögliche mechanische Kopplung für die Zwangssteuerung ist in Figur 2 dargestellt. Es wird ein Differentialge¬ triebe 60 verwendet, dessen erste Welle 61 drehfest oder mit einer geeigneten Übersetzung mit der Zuführwalze und dessen zweite Welle 62 drehfest oder mit einer geeigneten Übersetzung mit der Abzugswalze verbunden sind. Die Abtriebswelle 63 des Differentialgetriebes 60 dreht sich mit einer Geschwindigkeit, die der Differenz der Geschwin¬ digkeit der ersten Welle 61 und der zweiten Welle 62 entspricht. Vorzugsweise wird die Abtriebswelle 63 direkt mit der Verstelleinrichtung für die Schleifenlegwalze ver¬ bunden.A possible mechanical coupling for the forced control is shown in Figure 2. A differential gear 60 is used, the first shaft 61 of which is connected non-rotatably or with a suitable transmission ratio to the feed roller and the second shaft 62 of which is non-rotatably connected or with a suitable transmission ratio to the take-off roller. The output shaft 63 of the differential gear 60 rotates at a speed which corresponds to the difference in the speed of the first shaft 61 and the second shaft 62. The output shaft 63 is preferably connected directly to the adjusting device for the loop laying roller.
Eine alternative Ausführungsform der Erfindung ist in Figur 3 dargestellt, bei der symmetrisch zu der Zuführ¬ walze 10, der Abzugswalze 20 und der Schleifenlegwalze 30 drei Umkehrräder- 110, 120, 130 angeordnet sind. Die Achsen 111, 121 von zwei Umkehrrädern 110, 120 sind ortsfest parallel und im Abstand zu der Zuführwalze 10 und der Abzugswalze 20 angeordnet. Die Achse 131 des dritten Umkehrrades 130 ist starr mit der Achse 31 der Schleifenlegwalze 30 verbunden. Die Schleifenlegwalze 30 und das dritte Umkehrrad .130 sind gemeinsam entlang einer Verbindungslinie zwischen der Zuführ- bzw. Abzugswalze 10 20 und den beiden ortsfesten Umkehrwalzen 110, 120 verschiebbar. Alle Walzen weisen an beiden Enden jeweils ein Zahnrad 15, 25, 35, 115, 125, 135 auf.Der Wirkdurchmesser dieser 7.ahn- räder ist gleich dem der Zuführ-, Abzugswalze und der Schleifenlegwalze. . Ferner ist der Abstand zwischen der Zuführwalze 10 und der Abzugswalze 20 sowie der Abstand zwischen den beiden Umkehrrädern 110, 120 gleich dem Durchmesser der Walzen gewählt. Unter Ausbildung einer ersten und einer zweiten Schlaufe ist jeweils ein Zahn¬ 0 riemen 50 über sämtliche Zahnräder auf beiden Seiten der Walzen herumgeschlungen.An alternative embodiment of the invention is shown in FIG. 3, in which three reversing wheels 110, 120, 130 are arranged symmetrically to the feed roller 10, the take-off roller 20 and the loop laying roller 30. The axes 111, 121 of two reversing wheels 110, 120 are fixed in parallel and arranged at a distance from the feed roller 10 and the take-off roller 20. The axis 131 of the third reversing wheel 130 is rigidly connected to the axis 31 of the loop laying roller 30. The loop laying roller 30 and the third reversing wheel .130 can be displaced together along a connecting line between the feed or withdrawal roller 10 20 and the two stationary reversing rollers 110, 120. All rollers have a gear wheel 15, 25, 35, 115, 125, 135 at both ends. The effective diameter of these 7th gear wheels is the same as that of the feed, take-off and looping rollers. , Furthermore, the distance between the feed roller 10 and the take-off roller 20 and the distance between the two reversing wheels 110, 120 are selected to be equal to the diameter of the rollers. With the formation of a first and a second loop, a toothed belt 50 is looped around all the toothed wheels on both sides of the rollers.
Das Endlosmaterial 1 wird zwischen der Zuführwalze 10 und der Abzugswalze 20 in Form einer Reserveschläufe um dieThe continuous material 1 is between the feed roller 10 and the take-off roller 20 in the form of a reserve loop around the
-_ - Schleifenlegwalze 30 geführt. Diese Reserveschlaufe ent¬ spricht der ersten Schlaufe des Zahnriemens und wird in Abhängigkeit von der Zuführgeschwindigkeit v und der Abzugsgeschwindigkeit v entweder größer oder kleiner. Die zweite Schlaufe des Zahnriemens 50, die über das-_ - Loop laying roller 30 out. This reserve loop corresponds to the first loop of the toothed belt and becomes either larger or smaller depending on the feed speed v and the take-off speed v. The second loop of the timing belt 50, which over the
2Q dritte Umkehrzahnrad 135 geführt ist, wird entgegengesetzt zu der ersten Schlaufe entweder größer oder kleiner.2 Q third reversing gear 135 is guided, is opposite to the first loop either larger or smaller.
Bei der vorliegenden Anordnung wird, wenn beispielsweiseIn the present arrangement, if, for example
25 die Abzugsgeschwindigkeit v_ = 0 beträgt, die Schleifenlegwalze 30 und das dritte ümkehrrad 130 mit der halben Zuführgeschwindigkeit nach unten bewegt (bezogen auf die Darstellung in Figur 3) . Dabei stehen sowohl die Abzugswalze 20 als auch das eine ortsfeste25 the take-off speed v_ = 0, the loop laying roller 30 and the third reversing wheel 130 are moved downwards at half the feed speed (based on the illustration in FIG. 3). Both the take-off roller 20 and the one are stationary
30 Umkehrrad 120 still, während sich die Zuführwalze und das Umkehr ad 110 mit einer der Zuführgeschwindigkeit v. entsprechenden Umdrehungszahl drehen und die Schleifen¬ legwalze 30 und das dritte Umkehrrad 130 mit der halben Umdrehungszahl drehen.30 reversing wheel 120 silent, while the feed roller and the reversal ad 110 with a of the feed speed v. turn the corresponding number of revolutions and turn the loop-laying roller 30 and the third reversing wheel 130 at half the number of revolutions.
35 Der Abstand zwischen der Zuführwalze 10 bzw. der Abzugs¬ walze 20 und den beiden ortsfesten Umkehrrädern 110, 120 ist so gewählt, daß die größte auftretende Längendifferenz zwischen dem zugeführten und dem abgezogenen Material ausgleichbar ist.35 The distance between the feed roller 10 or the take-off roller 20 and the two fixed reversing wheels 110, 120 is selected so that the greatest length difference occurring between the supplied and the withdrawn material can be compensated.
In Figur 4a ist eine selbständige Lösung der Erfindung dar¬ gestellt, bei der das Endlosmaterial 1 kontinuierlich einer ersten Ausgleichsvorrichtung 2 zugeführt und an dieser aus- gangsseitig absatzweise an Stanzeinheiten 80 bis 82 und 85 bis 87 abgegeben wird. In diesen Stanzeinheiten wird das End¬ losmaterial 1 beim Stillstand durch die Stanzen 80, 81 bzw. 85, 86 bearbeitet und dann einer zweiten Ausgleichsvorrich¬ tung 3 zugeführt, von der das Endlosmaterial ausgangsseitig beispielsweise wieder kontinuierlich abgezogen und aufge¬ wickelt wird. Zwischen den beiden Ausgleichsvorrichtungen 2 und 3 wird mittels Umkehrwalzen 70, 71, 72 die Bewegungs¬ richtung des Endlosmaterials 1 so umgekehrt, daß es von -der Stanze 80, 81 zweilagig und von der Stanze 85, 86 einlagig gestanzt wird. Die Abstände der Umkehrwalzen 71 , 72 zu dem ersten Stanzwerk 80, 81 und zwischen beiden Stanzwerken sind beispielsweise so eingestellt, daß das in Figur 4b gezeigte Stanzmuster entsteht. Dabei werden die Rundlöcher 88 von der Stanze 85, 86 und die rechteckförmigen Löcher 83 von der Stanze 80, 81 ausgestanzt. Der Abstand zwischen den Rundlöchern 88 entspricht dem Vorschub bzw. dem absatzweisen Vorwärts¬ transport des Endlosmaterials 1 und die Strecke zwischen der Stanze 80, 81 über die Umkehrwalzen 71, 72 und zurück einem Vielfachen des halben Vorschubs .FIG. 4a shows an independent solution of the invention, in which the continuous material 1 is continuously fed to a first compensating device 2 and is delivered to the punching units 80 to 82 and 85 to 87 in batches on the output side thereof. In these punching units, the continuous material 1 is machined by the punches 80, 81 and 85, 86 at standstill and then fed to a second compensating device 3, from which the continuous material is continuously drawn off and wound up on the output side, for example. Between the two compensating devices 2 and 3, the direction of movement of the continuous material 1 is reversed by means of reversing rollers 70, 71, 72 so that it is punched by the punch 80, 81 in two layers and by the punch 85, 86 in one layer. The distances between the reversing rollers 71, 72 to the first punching unit 80, 81 and between the two punching units are set, for example, in such a way that the punching pattern shown in FIG. 4b is produced. The round holes 88 are punched out by the punch 85, 86 and the rectangular holes 83 by the punch 80, 81. The distance between the round holes 88 corresponds to the feed or the batchwise forward transport of the endless material 1 and the distance between the punch 80, 81 via the reversing rollers 71, 72 and back is a multiple of half the feed.
In Figur 5 ist eine Weiterbildung der Erfindung dargestellt, mit der das Endlosmaterial 1 dreilagig gestanzt wird. Dazu wird die Bewegungsrichtung des Endlosmaterials mittels Umkehr¬ walzen 90, 91, 92, 93 zweifach umgekehrt und dreilagig durch die Stanze 100, 101 geführt, so daß mit einem Vorschub und Stanzvorgang gleichzeitig drei gleichartige Stanzungen aus¬ geführt werden. Vorzugsweise werden die Antriebe 82, 87, 102 der in denFIG. 5 shows a development of the invention with which the continuous material 1 is punched in three layers. For this purpose, the direction of movement of the continuous material is reversed twice by means of reversing rollers 90, 91, 92, 93 and guided in three layers through the punch 100, 101, so that three identical punchings are carried out simultaneously with one feed and punching operation. The drives 82, 87, 102 are preferably of the type shown in FIGS
Figuren 4a und 5 dargestellten Stanzwerke von einem Rechner gesteuert und dann gemeinsam aktiviert, wenn das Endlosma¬ terial zum Stillstand gekommen ist. Die Antriebe der Abzugswalze 20 der ersten Ausgleichsvorrichtung 2 und der Zuführwalze 10 der zweiten Ausgleichsvorrichtung 3 sind entweder mechanisch gekoppelt oder werden synchron von dem Rechner gesteuert.FIGS. 4a and 5 control punching units controlled by a computer and then activated together when the endless material has come to a standstill. The drives of the take-off roller 20 of the first compensation device 2 and the feed roller 10 of the second compensation device 3 are either mechanically coupled or are controlled synchronously by the computer.
Erfindungsgemäß kann die Drehzahl der Abzugswalze 20 der ersten Ausgleichsvorrichtung 2 geringfügig von der Dreh¬ zahl der Zuführwalze 10 der zweiten Ausgleichsvorrichtung 3 abweichen, um Längenänderungen des Endlosmaterials 1 zwischen den beiden Ausgleichsvorrichtungen 2 und 3 auszugleichen. Dadurch kann eine Dehnung des Endlosmaterials 1 (z.B. beim Querperforieren) oder eine Stauchung (z.B. beim Rillen in Querrichtung) ausgeglichen und die Bahnspannung aufrecht erhalten werden.According to the invention, the speed of the take-off roller 20 of the first compensation device 2 can deviate slightly from the speed of the feed roller 10 of the second compensation device 3 in order to compensate for changes in length of the continuous material 1 between the two compensation devices 2 and 3. This allows an expansion of the continuous material 1 (e.g. when cross-perforating) or a compression (e.g. when creasing in the transverse direction) to be compensated and the web tension can be maintained.
Die erfindungsgemäße Ausgleichsvorrichtung hat den Vorteil, daß unterschiedlichste Bewegungsarten aneinander angepaßt werden können, ohne daß die im Endlosmaterial vorliegende Materialspannung und somit der Druck- und Stanzpasser verloren geht. Die am Eingang der Vorrichtung vorliegende Materialbewegung kann in eine beliebige andere Bewegung umgesetzt werden, beispielsweise eine kontinuierliche Bewegung, wie beim Abwickeln des Endlosmaterials, in eine schrittweise Vorwärtsbewegung, wie beim Flachstanzen, oder in eine kombinierte Vorwärts- und kurze Rückwärtsbewegung wie beim Rotationsdrucken,beispielsweise mit einem Dreivier¬ telklischee, oder beim Rotationsstanzen.Anschließend können diese Bewegungen in einer weiteren Ausgleichsvorrichtung wieder z.B. in eine kontinuierliche Bewegung wie beim Aufwickeln umgesetzt werden. Erfindungsgemäß können eine Vielzahl derartiger Ausgleichsvorrichtungen nacheinander eingesetzt werden, um die unterschiedlichsten Bewegungs- arten zwischen jeweils zwei aufeinander folgenden Ausgleichs¬ vorrichtungen zu erzeugen. In der letzten Ausgleichsvor¬ richtung wird in der Regel eine kontinuierlicheAbzugsge- schwindigkeit zum Aufwickeln erzeugt, jedoch ist auch eine absatzweise Abgabe möglich, z.B. bei der Abgabe von geschnittenen oder gefalteten Blättern. The compensation device according to the invention has the advantage that the most varied types of movement can be adapted to one another without the material tension present in the endless material and thus the pressure and punch register being lost. The material movement present at the input of the device can be converted into any other movement, for example a continuous movement, such as when unwinding the continuous material, a step-by-step forward movement, such as in flat punching, or in a combined forward and short backward movement, such as in rotary printing, for example with a three-quarter cliché, or with rotary punching. These movements can then be converted in a further compensating device, for example into a continuous movement as when winding up. According to the invention, a large number of such compensation devices can be used in succession in order to to generate types between two successive compensation devices. In the last compensation device, a continuous take-off speed is generally generated for winding, but batch-wise delivery is also possible, for example when cutting or folding sheets.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3534846.1 | 1985-09-30 | ||
| DE19853534846 DE3534846A1 (en) | 1985-09-30 | 1985-09-30 | DEVICE FOR COMPENSATING DIFFERENT FEEDING AND DRAWING SPEEDS OF CONTINUOUS MATERIAL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1987002019A1 true WO1987002019A1 (en) | 1987-04-09 |
Family
ID=6282361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1986/000563 Ceased WO1987002019A1 (en) | 1985-09-30 | 1986-09-30 | Device for processing endless web material with several processing stations at different operating speeds |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3534846A1 (en) |
| WO (1) | WO1987002019A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929297A (en) * | 1989-01-25 | 1990-05-29 | Mitsubishi Jukogyo Kabushiki Kaisha | Splicing system |
| EP0521159A4 (en) * | 1990-04-13 | 1993-02-10 | Sk Engineering Ltd | Automatic web-joining system |
| EP0669275A1 (en) * | 1994-02-24 | 1995-08-30 | Gretag Imaging Ag | Loop buffer for tape transporting device |
| CN111607917A (en) * | 2020-05-20 | 2020-09-01 | 浙江信胜科技股份有限公司 | Material belt deviation-preventing sheet feeding structure and sheet ironing machine |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT393372B (en) * | 1989-02-27 | 1991-10-10 | Kierner & Co Ohg | DEVICE FOR THE LENGTH FEED OF A FLEXIBLE SHEET, IN PARTICULAR OF A WIDE PAPER, IN A PLOTTER |
| DE4114297C2 (en) * | 1991-05-02 | 2003-05-28 | Zahoransky Anton Gmbh & Co | Device for plugging and anchoring bundles of bristles |
| DE4241353C2 (en) * | 1992-11-11 | 1996-10-02 | Kisters Maschinenbau Gmbh | Dancer for a web-like material processing machine |
| DE19501982B4 (en) * | 1995-01-24 | 2009-06-10 | Elau Gmbh | Feeding device of a discontinuous web-shaped material processing machine |
| DE59811872D1 (en) * | 1998-09-15 | 2004-09-30 | Imip Llc Wilmington | Storage device for photographic material |
| DE10003107B4 (en) * | 2000-01-25 | 2007-10-11 | Maschinenfabrik Wifag | Method and device for transporting a printing material web between functional units of a rotary printing press in special operating situations |
| DE10233469B4 (en) * | 2002-07-24 | 2005-05-12 | Koenig & Bauer Ag | A strand guide device |
| DE10307200B4 (en) * | 2003-02-20 | 2005-08-04 | Lemo Maschinenbau Gmbh | Device for the intermittent feeding of a material web |
| FR2969590A1 (en) * | 2010-12-22 | 2012-06-29 | Nipson Sas | DOUBLE LOOP PAPER STORAGE SYSTEM |
| JP5572239B1 (en) * | 2013-03-08 | 2014-08-13 | 花王株式会社 | Transfer device for transfer route |
| DE102013215547A1 (en) * | 2013-08-07 | 2015-02-12 | Krones Aktiengesellschaft | Feed and storage device for an endlessly conveyed strip material and method for its promotion |
| US9309081B2 (en) * | 2013-10-15 | 2016-04-12 | Kimberly-Clark Worldwide, Inc. | Active center pivot device for controlling sheet tension and method of using same |
| DE102017124562A1 (en) | 2017-10-20 | 2019-04-25 | Maschinenfabrik Rieter Ag | Textile machine network with a belt storage unit for temporary storage of fiber sliver |
| CN110356887A (en) * | 2019-06-20 | 2019-10-22 | 徐州嘉搏纺织股份有限公司 | Uncoiling machine is used in a kind of production of knitwear |
| DE102021129745A1 (en) | 2021-11-15 | 2023-05-17 | Manroland Goss Web Systems Gmbh | Format variable punching device and method therefor |
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| DE2637248C2 (en) * | 1976-08-19 | 1985-10-31 | Metronic Gerätebau GmbH & Co, 8702 Veitshöchheim | Device for the intermediate storage of a band-shaped print carrier |
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- 1985-09-30 DE DE19853534846 patent/DE3534846A1/en active Granted
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| US2010122A (en) * | 1933-05-18 | 1935-08-06 | Us Rubber Co | Festooning device |
| FR1444769A (en) * | 1964-05-07 | 1966-07-08 | Bobst Champlain S A | Intermittent transport mechanism of a belt periodically immobilized by a brake |
| CH540776A (en) * | 1972-05-23 | 1973-08-31 | Ferd Rueesch Maschinenfabrik F | Printing press |
| US4009814A (en) * | 1975-09-08 | 1977-03-01 | Scott Paper Company | Web accumulator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929297A (en) * | 1989-01-25 | 1990-05-29 | Mitsubishi Jukogyo Kabushiki Kaisha | Splicing system |
| EP0378721A1 (en) * | 1989-01-25 | 1990-07-25 | Mitsubishi Jukogyo Kabushiki Kaisha | Splicing system |
| EP0521159A4 (en) * | 1990-04-13 | 1993-02-10 | Sk Engineering Ltd | Automatic web-joining system |
| EP0669275A1 (en) * | 1994-02-24 | 1995-08-30 | Gretag Imaging Ag | Loop buffer for tape transporting device |
| US5597105A (en) * | 1994-02-24 | 1997-01-28 | Gretag Imaging Ag | Apparatus for buffering a variable length loop of strip material |
| CN111607917A (en) * | 2020-05-20 | 2020-09-01 | 浙江信胜科技股份有限公司 | Material belt deviation-preventing sheet feeding structure and sheet ironing machine |
| CN111607917B (en) * | 2020-05-20 | 2023-08-15 | 浙江信胜科技股份有限公司 | Deviation-preventing sheet feeding structure for material belt and sheet ironing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3534846C2 (en) | 1987-10-29 |
| DE3534846A1 (en) | 1987-04-16 |
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