EP3077306B1 - Dispositif et procédé de découpage d'un matériau en bande en bandes partielles et d'écartement des bandes partielles - Google Patents

Dispositif et procédé de découpage d'un matériau en bande en bandes partielles et d'écartement des bandes partielles Download PDF

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Publication number
EP3077306B1
EP3077306B1 EP14805837.3A EP14805837A EP3077306B1 EP 3077306 B1 EP3077306 B1 EP 3077306B1 EP 14805837 A EP14805837 A EP 14805837A EP 3077306 B1 EP3077306 B1 EP 3077306B1
Authority
EP
European Patent Office
Prior art keywords
webs
web material
web
conveying direction
transversely
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.)
Active
Application number
EP14805837.3A
Other languages
German (de)
English (en)
Other versions
EP3077306A1 (fr
Inventor
Bernd Cox
Manfred Van Triel
Jürgen Elze
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.)
KHS GmbH
Original Assignee
KHS GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KHS GmbH filed Critical KHS GmbH
Priority to EP17163306.8A priority Critical patent/EP3216731B1/fr
Publication of EP3077306A1 publication Critical patent/EP3077306A1/fr
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Publication of EP3077306B1 publication Critical patent/EP3077306B1/fr
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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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/0326—Controlling transverse register of web by moving the unwinding device
    • 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
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/038—Controlling transverse register of web by rollers
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/35—Spacing
    • B65H2301/351—Spacing parallel to the direction of displacement
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/36—Positioning; Changing position
    • B65H2301/361—Positioning; Changing position during displacement
    • B65H2301/3611—Positioning; Changing position during displacement centering, positioning material symmetrically relatively to a given axis of displacement
    • 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
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • 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
    • B65H2301/41—Winding, unwinding
    • B65H2301/415—Unwinding
    • B65H2301/41501—Special features of unwinding process
    • B65H2301/415013—Roll holder being able to pivote around an axis perpendicular to roller axis
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/52—Auxiliary process performed during handling process for starting
    • B65H2301/522—Threading web into machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/30—Sensing or detecting means using acoustic or ultrasonic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/412—Photoelectric detectors in barrier arrangements, i.e. emitter facing a receptor element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/264—Calculating means; Controlling methods with key characteristics based on closed loop control
    • 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
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film

Definitions

  • the invention relates to a cutting and spreading device according to the preamble of claim 1.
  • the webs of sheet material used for packaging are usually provided in a web width which is greater than the web width required for further processing. It is therefore known to cut the original or conveyed web of flat material in a cutting and spreading device one or two times in the web longitudinal direction, so as to produce two or three single webs, having the required web width for packaging. In order to enable the processing of the single webs, it is also necessary to separate these single webs after cutting, i. to spread.
  • both the positionally accurate feed of the web material to be cut and the required spread of the partial webs obtained by the cutting in a Mahsphase is set once, by aligning the web material supply relative to the cutting and spreading and / or by angular adjustment of used within the spreader, skewed Deflection rollers, such as in GB 2 239 965 A and EP 0 309 818 A2 shown. After a format change, for example, when using a new web material with a different width these adjustment and adjustment are carried out new.
  • the invention initially relates to a device for cutting a web material into a plurality of sub-webs by longitudinal cutting and spreading of the sub-webs.
  • the device comprises a dispensing device for providing the web material, at least one cutting device for generating at least one longitudinal section in the web material and at least one spreading device, by means of which the partial webs obtained after the at least one longitudinal section are deflected at least partially transversely to their conveying direction and spaced apart by the deflection. Furthermore, a first Provided control loop, by means of which the position of the web material is controlled transversely to the conveying direction before being fed to the cutting device. Furthermore, a second, cooperating with the spreading device control circuit is provided by means of which a control of the deflection of at least one sub-web takes place transversely to its conveying direction.
  • This spreading device includes two separate, separately operating control loops for the left and right outer sub-web.
  • a supply of the web material to the cutting device in a desired position is achieved by the first control loop.
  • the width of the individual partial webs can be chosen absolutely and relative to each other as desired.
  • a central feed of the web material to the cutting device is achieved by the first control loop. This central feed is particularly advantageous for the production of partial webs with the same widths.
  • the spreading of the partial webs is achieved to a desired desired spread, i. the respective partial webs leave the spreading device with a defined distance relative to each other.
  • a change in position of the respective partial webs is achieved within the spreader such that the opposing longitudinal edges of two juxtaposed partial webs to each other have a defined distance.
  • the juxtaposed partial webs leave the spreading device preferably parallel to one another and in a common conveying plane.
  • the implementation of the first and second control circuits ensures that partial webs of a defined width and in a predetermined spread are permanently provided by means of the device according to the invention, so that in the subsequent packaging station the packaging of packaging can be made into containers of high, consistent quality. Furthermore, the widths of the partial webs can be reduced by the control according to the invention due to lower required tolerance limits, which leads to a significant material savings in the web material used.
  • the first control circuit comprises at least one sensor unit for detecting the position of the web material transversely to its conveying direction, a control unit and an actuator, by means of which the position of the web material is changeable transversely to its conveying direction.
  • a pair of sensor units may also be provided on opposite sides of the web material.
  • a measurement signal can be obtained which indicates the position of the web material relative to the sensor unit and thus relative to the cutting device.
  • the sensor unit is preferably coupled to the control unit, which receives the measurement signal and generates a control signal on the basis of this measurement signal. Based on this control signal, the control of the actuator, which causes a change in the feed position of the web material by acting on a Bahnjustier wisdom.
  • the second control circuit comprises at least one sensor unit for detecting the position of a partial web transversely to the conveying direction, a control unit and an actuator, which cooperates with the spreading device and influenced by this interaction, the amount of deflection of the partial web transverse to its conveying direction.
  • a further measurement signal can be obtained, which indicates the position of the respective partial path relative to the sensor unit.
  • the distance can be determined, which have two side webs arranged side by side to each other.
  • the sensor unit is preferably coupled to the control unit, which receives the measurement signal and determines the distance of the sub-paths arranged side by side on the basis of this measurement signal.
  • This determined actual distance is compared by means of the control unit with a desired distance. Furthermore, a control signal is generated, which depends on the deviation of the actual distance from the desired distance. Based on this control signal, the control of the actuator, which causes a change in the spread of the partial webs by acting on an adjustment mechanism in the spreading.
  • the first control circuit cooperates with the dispensing device and is for displacing the dispensing device relative to the cutting device transversely to the conveying direction of the web material or a rotation of the dispensing device relative to the cutting device formed around a perpendicular to the conveying direction vertical axis.
  • the dispensing device is arranged on a slide which can be displaced linearly in the transverse direction, on which the actuator of the first control loop acts and effects the displacement of the dispensing device.
  • the dispensing device can be arranged on a rotating about a vertical vertical axis of rotation frame on which the actuator of the first control circuit acts and thus causes a rotation of the dispensing device.
  • the change in position of the dispensing device can cause a change in the feed position relative to the cutting device.
  • a particular advantage of the aforementioned, displaceable dispensing device is that it can be easily retrofitted in existing packaging machines.
  • the first control loop cooperates with a path adjusting device provided between the dispensing device and the cutting device, which is designed to effect a displacement of the web material transversely to its conveying direction by turning and / or displacement.
  • the web alignment device may in particular contain a plurality of rollers by means of which the web material is deflected several times.
  • the web alignment device may, in particular, comprise a rotary frame which is rotatable about a vertical axis, in particular a vertical vertical axis, in order to effect a positional change.
  • the web alignment device can have a first deflecting roller at the inlet, a second deflecting roller at the outlet and between these deflecting rollers a pair of rollers held on the revolving frame.
  • the pair of rollers is preferably arranged vertically offset from the plane spanned by the first and second deflection roller.
  • the spreading device has a plurality of pairs of rollers associated with the individual sub-webs, wherein the axes of rotation of the pairs of rollers are at least partially changeable by inclinations in their orientation.
  • the axes of rotation of the rollers of a pair of rollers are changed uniformly in magnitude and direction. Due to the inclination of the axes of rotation of the roller pairs, a change in position of the subsidized by the pair of rollers sub-web and thus a change in the distance of this sub-web can be achieved to adjacent sub-webs.
  • the angular position of the axes of rotation of a pair of rollers in the same direction by means of an adjusting mechanism is changeable.
  • the adjustment mechanism may, for example, have a slidably held receptacle, in each of which a bearing point of the two rollers of the roller pair is held.
  • the actuator of the second control circuit acts on the adjusting mechanism of the spreading device. This can be achieved by the second control loop an adjustment of the spreading caused by the spreading.
  • the sensor unit of the first control loop is designed to detect a longitudinal edge of the web material and / or a pair of mutually opposite sensor units for simultaneous detection of both longitudinal edges of the web material is provided.
  • the detection of the longitudinal edges of the web material is advantageous because they are easily detectable, for example by ultrasonic sensors.
  • reference marks for determining the position of the web material relative to the cutting device can be dispensed with.
  • the sensor unit of the second control loop is designed to detect a longitudinal edge of a partial web, which was laterally deflected by the spreading device.
  • the detection of the longitudinal edges of the partial web is advantageous because they are also easily detectable are, for example by ultrasonic sensors.
  • reference markings for determining the spread can be dispensed with when the longitudinal edges of the partial web are detected.
  • a plurality of second control circuits are each provided with at least one sensor unit and an actuator, wherein the individual sensor units are each assigned to different sub-webs and wherein each sensor unit is designed to detect a longitudinal edge of its associated, laterally deflected by the spreader sub-web. This allows the spread of all determined by the spreader in their position sub-webs determined.
  • the sensor units are at least partially formed by ultrasonic sensors.
  • Ultrasonic sensors can be used with any soundproof material such as plastic, paper or metal. Ultrasonic sensors allow the edges to be determined even from transparent sheet materials. In addition, ultrasonic sensors are insensitive to dirt and thus have a high detection reliability.
  • the sensor units are at least partially forked or U-shaped and have two opposing legs.
  • the sensor unit can be arranged such that the sensor unit surrounds the web material or the partial web.
  • a first leg of the sensor unit has a transmitter for emitting a measuring signal and a second leg of the sensor unit has a receiver which is designed to receive the measuring signal.
  • a lying between the transmitter and the receiver longitudinal edge of the web material or the sub-web can be optimally recognized.
  • the transmitter is an ultrasonic transmitter and the receiver is an ultrasonic receiver.
  • the spreading device has means for compensating for the path difference between partial webs which travel through paths of different lengths relative to one another.
  • the means for compensating the path difference can be formed, for example, by at least one displaceable roller.
  • the third control circuit has at least two sensor unit and a control unit for detecting a path difference between two partial paths with different deflection and an actuator which, depending on the determined path difference, drives the means for compensating the path difference.
  • the sensor units can be assigned to different partial webs and designed to detect reference marks on the partial webs.
  • the control unit is preferably designed to provide a control signal, which is transmitted to the actuator. This actuator is in operative connection with the means for compensating the path difference or the longitudinal offset in order to eliminate this by the controlled action.
  • the sensor units are adjustable by motor transversely to the conveying direction of the web material or the partial webs.
  • the adjustability is controlled by a central control unit, for example a control unit controlling the entire machine.
  • the sensors can be moved to the required nominal positions depending on the format of the processed web material or the required spread. This achieves a simplified changeover during format changes.
  • the device comprises a dispensing device 2, by means of which the web material 10 to be processed is provided.
  • the dispensing device 2 may in particular comprise a device for holding a supply of the web material 10, in particular a mandrel for receiving a roll of the web material.
  • the dispensing device 2 can also comprise a plurality of such devices for holding a supply of the web material 10 and a connecting device 2.1, for example a splicing device.
  • this connecting device 2.1 After the consumption of a first supply 2.2 of the web material 10, the end of this web material can be connected to the beginning of the web material provided by the second supply 2.2 '. This can be done without interruptions of the overall system a change of the web material supply.
  • the web material 10 may be provided in roll form, wherein the web material 10 is obtained from the web material supply by unwinding.
  • the web material 10 passes in the conveying direction FR, which runs parallel to the x-axis, following first a cutting device 3, which is designed to introduce longitudinal sections into the web material 10.
  • the cutting device 3 may in this case in particular contain cutting blades which are engaged by engagement in the web material 10 effect longitudinal cuts, thereby separating the web material 10 into a plurality of sub-webs 10a, 10b, 10c.
  • the web material 10 has, in particular, a longitudinal direction LR extending in the conveying direction FR (negative x direction) and a transverse direction QR (y direction) running perpendicular to the longitudinal direction LR, ie the web material 10 extends with its broad side in the y direction.
  • the web material 10 has a width b in the transverse direction QR.
  • the web material 10 is cut at least once, preferably at least twice in the longitudinal direction LR. This results in the partial webs 10a, 10b, 10c, which have a reduced width with respect to the web material 10.
  • the web material 10 is cut by the cutting device 3 into a plurality of equally wide partial webs 10a, 10b, 10c. Deviating from this, however, it is also possible that the partial webs 10a, 10b, 10c have different widths.
  • the partial webs 10a, 10b, 10c then pass through a spreading device 4, by means of which the partial webs 10a, 10b, 10c in the transverse direction QR, i. spread in the y direction, i. spaced apart from each other.
  • the cutting device 3 and the spreader 4 are combined as a cutting spreader, i. the cutter 3 and the spreader 4 are formed by a common device component.
  • the cutting device 3 and the spreading device 4 can also be formed by different, separate device components.
  • the spaced partial webs 10a, 10b, 10c are guided parallel to each other by a dancer shaft means 6 having a plurality of dancer waves parallel to each other and then fed to a packaging station, not shown.
  • the web material 10 may be, for example, a plastic film web.
  • the packaging station can be formed, for example, by a film winding station or a film shrinking station.
  • the cutting and spreading device 1 has a plurality of control circuits 20, 30, by means of which during operation of the cutting and spreading device 1 dynamically both the positional supply of the web material 10 to the cutting device 3 and the spreading, ie the spacing of the partial webs 10a, 10b, 10c are mutually controllable.
  • a first control loop 20 is provided, by means of which the feeding of the web material 10 to Cutting device 3 in the transverse direction QR, that is controllable in the y-direction.
  • the first control circuit 20 comprises at least one sensor unit 21, 21 ', which is connected to a control unit 22 in order to transmit a measurement signal detected by the sensor unit 21, 21' to the control unit 22.
  • the first control circuit 20 additionally comprises an actuator 23, which is actuated by a control signal provided by the control device 22 and is mechanically connected to a web alignment device 5 for changing the feed position or feed position of the web material 10, so that by acting on the actuator 23 Brujustier worn 5 feeding the web material 10 to the cutting device 3 in the transverse direction QR, ie in the y direction can be influenced.
  • the at least one sensor unit 21, 21 ' is provided for example between the dispensing device 2 and the cutting device 3 and designed to detect the actual position of the web material 10 in the y direction.
  • the sensor unit 21, 21 ' may be, in particular, a sensor which detects the longitudinal edge of the web material 10, ie an edge running in the conveying direction FR.
  • the sensor unit 21, 21 'U-shaped with two spaced-apart sensor legs and for embracing the longitudinal edge of the web material 10 may be formed.
  • a first sensor leg above the web material 10 and a second sensor leg opposite the first sensor leg may be provided underneath the web material 10.
  • the first sensor leg can in this case have a transmitting element emitting a measuring signal and the second sensor leg can have a receiving element receiving this measuring signal.
  • the sensor unit 21, 21 ' can be formed by an ultrasonic sensor.
  • other types of sensors such as infrared sensors, color line sensors, photosensitive sensors, or CCD sensors (CCD: Charge-Coupled Device) can be used.
  • CCD sensors CCD: Charge-Coupled Device
  • a pair of sensor units 21, 21 ' may also be used, wherein the sensor units 21, 21' are preferably arranged opposite one another at different longitudinal edges of the web material 10. As a result, not only the absolute position of these longitudinal edges but also the width b of the web material 10 can be continuously determined by this sensor unit pair at the same time.
  • An actual position or an actual position of the web material 10 in the y direction is determined by the at least one sensor unit 21, 21 'and transmitted to the control unit 22 as a measurement signal.
  • the control unit 22 compares the received actual position or an actual position of the web material 10 with a desired position. This desired position is either stored in the control unit 22 or the control unit 22 has access to an external memory area in which this desired position is stored. Alternatively, the desired position can also be provided by a central control unit 50, for example a machine control system controlling the entire packaging station. Based on the actual position and the desired position, the control unit 22 determines a control signal, which is transmitted to the actuator 23.
  • the actuator 23 cooperates with the web alignment device 5, by means of which the feed position of the web material in the y-direction is variable.
  • the actuator thus adjusts the feed position of the web material 10 to the cutting device 3 in order to minimize the deviation of the actual position from the desired position.
  • the positionally correct feeding of this web material 10 to the cutting device 3 in the y-direction can thus be ensured, i. Ideally, the web material 10 is fed in the desired position of the cutting device 3.
  • the Brujustier Schwarz 5 may be associated with the dispensing device 2 or be part of this dispensing device 2.
  • the web stock 2.2 for example, a winding mandrel, on which the web material is arranged, be arranged on a carriage which is actuated by the actuator displaced in the y-direction.
  • the entire dispensing device 2 may for example contain a plurality of web material stores 2.2, 2.2 ', guide means for the web material 10, in particular guide rollers and / or the connecting device 2.1.
  • FIG. 2 shows a further alternative of a Brujustier Nur 5, namely with a rotating frame 8.
  • the dispensing device 2 which in the embodiment according to FIG. 2 is formed stationary, provided web material 10 via a first guide roller 8.1, an offset from the first guide roller 8.1 arranged roller pair 8.2 and a second, in turn offset to the pair of rollers 8.2 arranged deflecting 8.3 led to the cutting device 3.
  • the axes of rotation of the first and second guide rollers 8.1, 8.3 clamp a first plane which is parallel to a second plane which is spanned by the axes of rotation of the roller pair 8.2.
  • the rollers of the roller pair 8.2 are coupled to change the feed position of the strip material 10 to the cutting device 3 via the rotary frame 8, which is rotatable about a vertical, extending in the z-direction, ie perpendicular to the conveying direction FR and the transverse direction QR extending vertical axis HA.
  • the feed position of the strip material 10 is changed as a function of the direction of rotation, that is, the web material 10 is displaced in the positive or negative y direction.
  • the first control circuit 20 associated, at least one sensor unit 21, 21 ' is arranged in the embodiment shown between the pair of rollers 8.2 and the second guide roller 8.3.
  • the sensor unit 21, 21 ' between the second deflecting roller 8.3 and the cutting device 3.
  • the control of the feed position of the web material 10 to the cutting device 3 is equivalent to the embodiment described above FIG. 1 , wherein the actuator 23 in the embodiment according to FIG. 2 acting on the rotating frame 8 and thereby causes its rotation about the vertical axis HA in response to the control signal.
  • the aim of the first control loop 20 is to feed the web material 10 in relation to its orientation in the transverse direction QR in the correct position of the cutting device 3, in order to obtain a desired partial web width in the part webs 10a, 10b, 10c formed by cutting.
  • the cutter 3 has cutting blades for obtaining N partial webs 10a, 10b, 10c (N-1), where N is a natural number.
  • the cutting device 3 and the following spreading device 4 following in the conveying direction FR are preferably designed as a combined cutting-spreading device, as described in the patent application German patent application DE 10 2009 008 936 A1
  • the disclosure of this patent application is incorporated in its entirety in the disclosure of this application.
  • the partial webs 10a, 10b, 10c obtained after cutting are distributed over different roller pairs of the spreader 4 guided.
  • the spreader 4 includes in particular a plurality of pairs of rollers 4.1, 4.2, 4.3, which are each assigned to a part web 10a, 10b, 10c to be processed and by which the respective part webs 10a, 10b, 10c are deflected several times.
  • the rollers are at least partially accommodated in such a way in the spreading device 4, that the axis of rotation is pivotable, namely pivotable within the xy plane.
  • the pivotability of the axes of rotation of the rollers during the deflection of the respective partial web 10a, 10b, 10c, a change in position of the partial web 10a, 10b, 10c in the y-direction and thus a spreading of the partial webs 10a, 10b, 10c relative to one another can be achieved.
  • the pivotability of the axes of rotation of belonging to a pair of rollers 4.1, 4.2, 4.3 rollers selected such that they are swivel in terms of magnitude and direction.
  • the number of roller pairs in the spreader 4 corresponds to the number of sub-webs 10a, 10b, 10c to be processed.
  • the rolls of that pair of rolls around which the partial web to be laterally displaced in the transverse direction QR is inclined are inclined so that the axis of rotation of the roll encloses an acute angle with the Y axis .
  • the change in position of the respective partial web 10a, 10b, 10c by deflection at the inclined rollers of its associated pair of rollers depends directly on the angular amount by which the rollers of the pair of rollers were tilted. This allows the change in position of a partial web 10a, 10b, 10c and thus the spread of these partial webs to each other directly by the inclination of the rollers of the respective pairs of rollers 4.1, 4.3 influence.
  • the cutting device 2 has two cutting blades, so that three partial webs 10a, 10b, 10c are obtained from the web material 10 by the cutting device 2. It is understood that this design is chosen arbitrarily and the cutting and spreading device 1 according to the invention can contain any number of cutting blades in the cutting device 2 and thus can process any number of partial webs. In the event that an odd number of partial webs 10a, 10b, 10c is processed, preferably the position of the middle partial web 10b remains unchanged, ie the middle partial web 10b is associated with a pair of rollers in which the axes of rotation of Rolls run exactly perpendicular to the conveying direction FR.
  • a second control circuit 30 is associated with at least one sensor unit 31, a control unit 32 and an actuator 33.
  • the positional changes of the individual partial webs 10a, 10c can be controlled independently of one another.
  • the sensor unit 31 is, as already described above with respect to the sensor unit 21, preferably designed to detect a longitudinal edge of its associated sub-web 10a, 10c.
  • a U-shaped sensor unit 31 may be used, which is preferably an ultrasonic sensor.
  • an actual position or an actual position of the partial track 10 a, 10 c assigned to the sensor unit 31 is determined with respect to the y-direction and transmitted as a measuring signal to the control unit 32.
  • the control unit 32 compares the received actual position or an actual position of the partial web 10a, 10c with a desired position. This desired position is either stored in the control unit 32 or the control unit 32 has access to an external memory area in which this desired position is stored.
  • the desired position can also be provided by the central control unit 50, for example a machine control system controlling the entire packaging station.
  • the control unit 32 determines a control signal, which is transmitted to the actuator 33.
  • the actuator 33 cooperates with an adjusting mechanism of the spreading device 4, by means of which the inclination of the respective sub-path deflecting roller pair 4.1, 4.2, 4.3 is variable.
  • the actuator 33 thus an adjustment of the inclination of the rollers of the respective pair of rollers and thus a change in position of the subsidized by the rollers part web 10a, 10c, thereby minimizing the deviation of the actual position of the desired position.
  • each partial web and when processing an odd number of partial webs are all Part tracks except the middle part of a track 30 associated with a second loop.
  • the control units 32 of these second control circuits 30 can be formed at least partially by a single control unit 32.
  • a third control circuit 40 which comprises at least two sensor units 41, 41 ', a control unit 42 and an actuator 43.
  • the two sensor units 41, 41 ' are in this case assigned to different partial webs 10a, 10b, so that the longitudinal offset ⁇ l can be determined by the sensor units 41, 41'.
  • the sensor units 41, 41 ' are preferably designed for the detection of reference marks, which are formed for example by suitable locations on the printed image of the partial webs 10a, 10b, 10c or by specially provided for this purpose print marks.
  • reference marks are formed for example by suitable locations on the printed image of the partial webs 10a, 10b, 10c or by specially provided for this purpose print marks.
  • these reference marks form a line transverse to the conveying direction FR, i. the reference marks come to lie on a line parallel to the y-axis.
  • the offset of the reference marks to each other corresponds to the longitudinal offset .DELTA.l.
  • the sensor units 41, 41 ' are connected to the control unit 42 for transmitting the measurement signals provided by the respective sensor units 41, 41'.
  • the magnitude determination of the longitudinal offset .DELTA.l can be determined from the time offset, the reference marks are detected by the sensor units 41, 41 'and the conveying speed of the web material 10.
  • a control or control signal is generated by the control unit 42, by means of which the actuator 43 is controlled.
  • the actuator 43 is operatively connected to a Weglynverstellmechanik the spreader 4, which is controlled by the actuator 43, the path length, the one of the two partial webs, which were used for longitudinal displacement measurement, passes through, changed in such a way that the longitudinal offset .DELTA.l is eliminated.
  • the Weglynverstellmechanik can be formed, for example, to change the distance between rollers of a pair of rollers, which deflects the respective partial web.
  • the Weglynverstellmechanik acts on the central part of web 10b, so that at the same spread of the three partial webs 10a, 10b, 10c at the same time the Leksversatze .DELTA.l between the two partial web pairs (middle partial web to the respective outer partial webs) are resolved.
  • the sensor units 21, 21 ', 31, 41, 41' slidably, in particular motor-displaced relative to the web material 10 and the partial webs 10a, 10b, 10c may be arranged.
  • the sensor units 21, 21 ', 31, 41, 41' can be used in particular in the transverse direction QR, i. be slidably provided in a direction parallel to the y-direction.
  • Each sensor unit 21, 21 ', 31, 41, 41' is preferably assigned a respective drive 9, via which an adjustment of the sensor units 21, 21 ', 31, 41, 41' takes place in the transverse direction QR.
  • the sensor units 21, 21 ', 31, 41, 41' can be transversely to the conveying direction FR of the web material as a function of the width b of the web material 10 and the spreading of the part webs 10a, 10b, 10c caused by the spreading device 4 10 to the desired position.
  • the drives 9 can in this case in particular be connected to the central control unit 50, which effects, for example, the overall control of the cutting and spreading device 1, so that the sensor units 21, 21 ', 31, 41, 41' controlled by the central control unit 50 are dependent on predetermined parameters, for example, the width of the web material 10 or the spreading to be effected in a defined desired position procedure.
  • FIG. 3 corresponds essentially to the previously described embodiments according to FIGS. 1 and 2 , where the in FIG. 3 cutting and spreading device 1 shown only the first control circuit 20 for positionally accurate feeding of the web material 10 to the cutting device 3 and the second control circuit 30 for controlling the spreading of the partial webs 10a, 10b, 10c.
  • the dynamic control caused by the third control loop 40 is dynamic Longitudinal displacement control replaced by a manually adjustable and fixed for the format to be processed Weglynverstellmechanik.
  • a motor displacement of the sensor units 21, 21 ', 31 due to the use of a fixed format of the web material 10 is omitted.
  • the web material 10 is threaded through the spreader 2 via the web adjusting device 5, the cutter 3, the spreader 4, and the dancer shaft device 6 formed by the rotating frame 8.
  • the cutting blades of the cutting device 3 are not engaged with the web material 10.
  • the strip material is guided over the adjustable in their angular adjustment roller pairs 4.1, 4.3.
  • the sensor units 21, 21 ', 31, 41, 41' are positioned outside of their working range by the higher-order control unit 50.
  • the cutting blades 3.1 of the cutting device are subsequently brought into engagement with the web material 10 so that it is separated into the part webs 10a, 10b, 10c.
  • the sensor units 21, 21 ', 31, 41, 41' are moved by the central control unit 50 to its desired position.
  • FIG. 6 shown by the dashed line, the middle part of the web 10b severed in the transverse direction QR, passed over the pair of rollers 4.2 and the part of the web ends obtained by cutting again connected to each other.
  • the central control unit 50 causes the spreading of the spreading device 4 by tilting the roller pairs 4.1, 4.3 set to a desired target spread.
  • the tilting of the rollers of the roller pairs 4.1, 4.3 causing actuator 33 can be controlled by the central control unit 50.
  • the longitudinal edges of the partial webs 10a, 10c come to lie within the detection range of the sensor units 31, 31 '.
  • the method of the sensor units 31, 31' it is possible for the method of the sensor units 31, 31' to be in their respective desired position and to set the spread to the desired spread takes place simultaneously.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (15)

  1. Dispositif de découpage d'un matériau en bande (10) en plusieurs bandes partielles par découpage longitudinal et écartement des bandes partielles comprenant un dispositif de distribution (2) pour la mise à disposition du matériau en bande, au moins un dispositif de découpage (3) réalisé pour la génération d'au moins une coupe longitudinale dans le matériau en bande et au moins un dispositif d'écartement (4), au moyen duquel les bandes partielles (10, 10b, 10c) obtenues après l'au moins une coupe longitudinale sont déviées au moins en partie transversalement à leur direction de transport (FR) et espacées les unes des autres par la déviation, dans lequel un premier circuit de régulation (20) est prévu, au moyen duquel la position du matériau en bande (10) est commandée transversalement à sa direction de transport (FR) avant l'alimentation au dispositif de découpage (3) et qu'au moins un deuxième circuit de régulation (30) coopérant avec le dispositif d'écartement (3) est prévu, au moyen duquel une commande de la déviation d'au moins deux bandes partielles (10a, 10c) a lieu transversalement à sa direction de transport (FR), et dans lequel le premier circuit de régulation (20) comprend au moins une unité de capteur (21, 21') pour la détection de la position du matériau en bande (10) transversalement à sa direction de transport (FR), une unité de commande (22) et un actionneur (23), au moyen duquel la position du matériau en bande peut être modifiée transversalement à sa direction de transport (FR), dans lequel
    le deuxième circuit de régulation (30) comprend au moins une unité de capteur (31) pour la détection de la position d'une bande partielle (10a, 10c) transversalement à sa direction de transport (FR), au moins une unité de commande (32) et au moins un actionneur (33), qui coopère avec le dispositif d'écartement (4) et influence par cette coopération la valeur de la déviation de la bande partielle (10a, 10c) transversalement à sa direction de transport (FR), caractérisé en ce que
    le dispositif d'écartement (4) présente des moyens de compensation de la différence de trajet entre des bandes partielles (10a, 10b, 10c), qui parcourent des trajets de différente longueur les unes par rapport aux autres, et en ce qu'un troisième circuit de régulation (40) est prévu, qui coopère avec les moyens de compensation de la différence de trajet et commande ces moyens de sorte que les bandes partielles (10a, 10b, 10c) parcourent au moins en partie des trajets de même longueur, et
    dans lequel la déviation des deux bandes partielles extérieures (10a, 10c) a lieu au moyen de l'une commande de déviation des au moins deux bandes partielles (10a, 10c) transversalement à leur direction de transport (FR), dans lequel aucune telle commande n'est prévue pour la bande partielle (10b) agencée entre elles.
  2. Dispositif selon la revendication 1, caractérisé en ce que le troisième circuit de régulation (40) présente au moins deux unités de capteur (41, 41') et une unité de commande (42) pour la détection d'une différence de trajet entre deux bandes partielles (10b, 10c) de déviation différente et un actionneur (43), qui commande les moyens de compensation de la différence de trajet en fonction de la différence de trajet déterminée.
  3. Dispositif selon la revendication 2, caractérisé en ce que les unités de capteur sont attribuées à différentes bandes partielles et sont réalisées pour la détection de marques de référence sur les bandes partielles respectives.
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier circuit de régulation (20) coopère avec le dispositif de distribution (2) et est réalisé pour le coulissement du dispositif de distribution (2) par rapport au dispositif de découpage (3) transversalement à la direction de transport (FR) du matériau en bande (10) ou une rotation du dispositif de distribution (2) par rapport au dispositif de découpage (3) autour d'un axe vertical s'étendant perpendiculairement à la direction de transport (FR).
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier circuit de régulation (20) coopère avec un dispositif d'ajustage de bande (5) prévu entre le dispositif de distribution (2) et le dispositif de découpage (3), qui est réalisé pour entraîner un coulissement du matériau en bande (10) transversalement à sa direction de transport (FR) par rotation et/ou coulissement.
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif d'écartement (4) présente plusieurs paires de rouleaux attribuées aux bandes partielles (10a, 10b, 10c) individuelles, dans lequel les axes de rotation des paires de rouleaux peuvent être modifiés au moins en partie dans leur orientation par des positions inclinées.
  7. Dispositif selon la revendication 6, caractérisé en ce que la position angulaire des axes de rotation d'une paire de rouleaux peut être modifiée dans le même sens au moyen d'un mécanisme de réglage.
  8. Dispositif selon la revendication 7, caractérisé en ce que l'actionneur (33) du deuxième circuit de régulation (30) agit sur le mécanisme de réglage du dispositif d'écartement (4).
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de capteur (21, 21') du premier circuit de régulation (20) est réalisée pour la détection d'une arête longitudinale du matériau en bande (10) et/ou en ce qu'une paire d'unités de capteur (21, 21') opposées l'une à l'autre sont prévues pour la détection simultanée des deux arêtes longitudinales du matériau en bande (10).
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de capteur (31) du deuxième circuit de régulation (30) est réalisée pour la détection d'une arête longitudinale d'une bande partielle (10a, 10c), qui a été déviée latéralement par le dispositif d'écartement (4).
  11. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs deuxièmes circuits de régulation (30) sont prévus respectivement avec au moins une unité de capteur (31) et un actionneur (33), en ce que les unités de capteur (31) individuelles sont attribuées à des bandes partielles (10a, 10c) différentes respectivement et en ce que chaque unité de capteur (31) est réalisée pour la détection d'une arête longitudinale de la bande partielle (10a, 10c) qui lui est attribuée, déviée latéralement par le dispositif d'écartement (4).
  12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les unités de capteur (21, 21', 31) sont formées au moins en partie par des capteurs à ultrasons.
  13. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les unités de capteur (21, 21', 31) sont formées au moins en partie en forme de fourche ou de U et présentent deux branches opposées l'une à l'autre.
  14. Dispositif selon la revendication 13, caractérisé en ce qu'une première branche de l'unité de capteur (21, 21', 31') présente un émetteur pour l'émission d'un signal de mesure et une deuxième branche de l'unité de capteur (21, 21', 31) présente un récepteur qui est réalisé pour la réception du signal de mesure.
  15. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les unités de capteur (21, 21', 31, 31', 41, 41') sont déplaçables de manière motorisée transversalement à la direction de transport (FR) du matériau en bande (10) ou des bandes partielles (10a, 10b, 10c).
EP14805837.3A 2013-12-02 2014-11-26 Dispositif et procédé de découpage d'un matériau en bande en bandes partielles et d'écartement des bandes partielles Active EP3077306B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17163306.8A EP3216731B1 (fr) 2013-12-02 2014-11-26 Dispositif et procédé de coupe d'une bande de matériau en bandes partielles et écartement des bandes partielles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013113289.8A DE102013113289A1 (de) 2013-12-02 2013-12-02 Vorrichtung sowie Verfahren zum Schneiden eines Bahnmaterials in Teilbahnen und Spreizen der Teilbahnen
PCT/EP2014/075694 WO2015082286A1 (fr) 2013-12-02 2014-11-26 Dispositif et procédé de découpage d'un matériau en bande en bandes partielles et d'écartement des bandes partielles

Related Child Applications (2)

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EP17163306.8A Division EP3216731B1 (fr) 2013-12-02 2014-11-26 Dispositif et procédé de coupe d'une bande de matériau en bandes partielles et écartement des bandes partielles
EP17163306.8A Division-Into EP3216731B1 (fr) 2013-12-02 2014-11-26 Dispositif et procédé de coupe d'une bande de matériau en bandes partielles et écartement des bandes partielles

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EP3077306A1 EP3077306A1 (fr) 2016-10-12
EP3077306B1 true EP3077306B1 (fr) 2019-02-27

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EP17163306.8A Active EP3216731B1 (fr) 2013-12-02 2014-11-26 Dispositif et procédé de coupe d'une bande de matériau en bandes partielles et écartement des bandes partielles
EP14805837.3A Active EP3077306B1 (fr) 2013-12-02 2014-11-26 Dispositif et procédé de découpage d'un matériau en bande en bandes partielles et d'écartement des bandes partielles

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EP (2) EP3216731B1 (fr)
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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113619C2 (de) * 1981-04-03 1984-04-05 G. O. Stumpf GmbH & Co KG, 7421 Mehrstetten Vorrichtung zur Kantensteuerung für eine Legemaschine
DE3733129C2 (de) * 1987-10-01 1999-02-18 Focke & Co Vorrichtung zum Trennen einer Materialbahn in zwei Teilbahnen
US5058793A (en) * 1990-01-16 1991-10-22 The North American Manufacturing Company Apparatus for guiding a moving strip
DE4130678C2 (de) * 1991-09-14 1995-03-16 Roland Man Druckmasch Vorrichtung zum Einziehen von Bahnen in Rollenrotationsdruckmaschinen
DE10234674B4 (de) * 2002-07-30 2010-04-29 Wifag Maschinenfabrik Ag Bahnspreizvorrichtung
DE10236658B4 (de) * 2002-08-09 2012-11-29 Wifag Maschinenfabrik Ag Schnittregister-Aufteilung
DE202008000890U1 (de) * 2008-01-21 2008-03-20 Man Roland Druckmaschinen Ag Bahnspreizeinrichtung für eine Rotationsdruckmaschine und damit ausgerüstete Rotationsdruckmaschine
DE102008005392A1 (de) * 2008-01-21 2009-07-30 Manroland Ag Bahnspreizeinrichtung für eine Rotationsdruckmaschine und damit ausgerüstete Rotationsdruckmaschine
DE102009008936A1 (de) 2009-02-13 2010-08-26 Khs Ag Schneid- und Spreizvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
DE102013113289A1 (de) 2015-06-03
EP3216731A1 (fr) 2017-09-13
EP3216731B1 (fr) 2020-04-01
WO2015082286A1 (fr) 2015-06-11
EP3077306A1 (fr) 2016-10-12

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