WO2015082286A1 - 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
WO2015082286A1
WO2015082286A1 PCT/EP2014/075694 EP2014075694W WO2015082286A1 WO 2015082286 A1 WO2015082286 A1 WO 2015082286A1 EP 2014075694 W EP2014075694 W EP 2014075694W WO 2015082286 A1 WO2015082286 A1 WO 2015082286A1
Authority
WO
WIPO (PCT)
Prior art keywords
web material
webs
partial
web
cutting
Prior art date
Application number
PCT/EP2014/075694
Other languages
German (de)
English (en)
Inventor
Bernd Cox
Manfred Van Triel
Jürgen Elze
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 EP14805837.3A priority Critical patent/EP3077306B1/fr
Priority to EP17163306.8A priority patent/EP3216731B1/fr
Publication of WO2015082286A1 publication Critical patent/WO2015082286A1/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 and to a method for cutting a web material in partial webs and spreading thereof according to the preamble of claim 19.
  • 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 feeding of the web material to be cut and the required spreading of the partial webs obtained by the cutting are set once in a setting phase by aligning the web material supply relative to the cutting and spreading device and / or through Angular adjustment of the used within the spreader, inclined Guide rollers. After a format change, for example, when using a new web material with a different width these adjustment and adjustment are carried out new. Due to dynamic processes during operation of the cutting and spreading device, deviations in the positional feed of the web material to the cutting device or within the spreading device can occur, which lead to fluctuating widths of the part webs or a positionally shifted feeding of the part webs to the following packaging station.
  • the invention relates first 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 become.
  • 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.
  • a second control loop cooperating with the spreading device is provided, by means of which a control of the deflection of at least one partial 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 partial webs arranged next to one another leave the spreading device preferably parallel to one another and in a common conveying plane.
  • 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 Brujustier interference.
  • 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 easy to detect bar, 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 respectively provided with at least one sensor unit and an actuator, wherein the individual sensor units are respectively assigned to different partial paths and wherein each sensor unit is designed to detect a longitudinal edge of the sub-path laterally deflected by the spreader. 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 sound-impermeable 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 encompasses 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.
  • the transmitter is an ultrasonic transmitter and the receiver is an ultrasonic receiver.
  • the spreader has means for compensating for the path difference between sub-webs, which pass through paths of different lengths relative to each other. It can be a be provided third loop, which cooperates with the means for compensating for the path difference and controls these means such that the partial webs at least partially pass through equally long distances within the spreader.
  • 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, controls the means for compensating for 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 setpoint positions depending on the format of the processed web material or the required spread. This achieves a simplified changeover during format changes.
  • the invention additionally relates to a method for cutting a web material into several part webs by longitudinal cutting and spreading of the part webs, comprising the following steps:
  • web materials are understood as meaning, in particular, plastic films, paper, metal or textile webs or other materials provided in web form.
  • the sheet materials may be provided in particular in roll form.
  • actuator is understood to mean in particular motor drives, for example linear drives or rotary drives, etc.
  • Sensor units in the sense of the invention are understood to mean any sensors, in particular ultrasonic sensors, infrared sensors, color line sensors, light-sensitive sensors, or else CCD sensors (CCD: Charge-Coupled Device).
  • CCD sensors Charge-Coupled Device
  • FIG. 2 shows by way of example in a top view and a side view a device according to the invention for cutting and spreading web material in a second exemplary embodiment
  • FIG. 3 shows by way of example in a top view and a side view of an inventive device for cutting and spreading of web material in a third embodiment
  • FIG. 4 - 7 by way of example representations for the establishment of a device for
  • FIGS. 1 to 3 a cutting and spreading device 1 according to the invention in different embodiments is shown, in each case in plan view and side view.
  • the cutting and spreading device 1 will be described below with the aid of a three-dimensional Cartesian coordinate system with x-y and z-axis.
  • 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 donation device 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 web material 10 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 splitter device.
  • a connecting device 2.1 for example a splitter device.
  • the 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 is designed to introduce longitudinal sections into the web material 10.
  • the web material 10 may in this case in particular contain cutting blades, which by engaging in the Brumatenal effect 10 longitudinal sections, thereby separating the web material 10 into a plurality of partial 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) 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 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 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, both the positional feeding of the web material 10 to the cutting direction 3 and the spreading, ie the spacing of the part webs 10 a, 10b, 10c are mutually controllable.
  • a first control loop 20 is provided, by means of which the feeding of the web material 10 to Schneideinnchtung 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.
  • 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.
  • the desired position can also be provided by a central control unit 50, for example a machine control system controlling the entire packaging station.
  • 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 can be changed.
  • 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 web alignment device 5 can be assigned to the dispensing device 2 or can also 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 web alignment device 5, namely with a rotating frame 8.
  • the web material 10 provided by the dispensing device 2, which is fixed in the exemplary embodiment according to FIG. 2, is offset by a first deflecting roller 8.1, which is offset from the first deflecting roller 8.1 arranged roller pair 8.2 and a second, again rum arranged offset to the roller pair 8.2 guide roller 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 mate aH O 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 ' is also possible to provide 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 previously described embodiment of Figure 1, wherein the actuator 23 acts in the embodiment of Figure 2 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 with respect to its orientation in the transverse direction QR in the correct position to the cutting device 3 in order to obtain a desired part 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 spreading device 4 following in the conveying direction FR are preferably designed as a combined cutting spreader, as described in the German patent application DE 10 2009 008 936 A1, the disclosure of this patent application being completely incorporated in the disclosure of that patent Registration is received.
  • 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.
  • the partial webs 10a and 10c which are to undergo a change in position in the transverse direction QR by the spreader 4, are each assigned a second control loop 30, which comprises at least one sensor unit 31, a control unit 32 and an actuator 33 includes.
  • 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 interacts with an adjusting mechanism of the spreading device 4, by means of which the inclination of the pair of rollers 4, 4, 4, 4.3 deflecting the respective part-track can be changed.
  • the control signal is carried out by the actuator 33 so that an adjustment of the inclination of the rollers of the respective pair of rollers and thus a change in position promoted 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.
  • partial webs 10 a, 10 b, 10 c and depending on the degree of spreading can be traversed by the change in position in the transverse direction QR the sub-webs 10 a, 10 b, 10 c within the spreader 4 different path lengths, so that a longitudinal offset ⁇ between the partial webs 10a, 10b, 10c can occur.
  • a third control loop 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 ⁇ can be determined by the sensor units 41, 41'.
  • 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, ie the reference marks come to rest on a line parallel to the y-axis.
  • the offset of the reference marks to each other corresponds to the longitudinal offset ⁇ .
  • the absolute value determination of the longitudinal offset ⁇ can be determined from the time offset, which 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 path length adjusting mechanism of the spreading device 4, which is actuated by the actuator 43, the Weglän- ge, which undergoes one of the two partial webs, which were used for longitudinal displacement measurement, changed in such a way that the longitudinal offset .DELTA. ⁇ 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 middle part of the web 10b, so that at the same spread of the three partial webs 10a, 10b, 10c at the same time the Leksversatze .DELTA. ⁇ between two partial web pairs (middle partial web to the respective outer partial webs) are fixed.
  • 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 provided in particular in the transverse direction QR, ie displaceable 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, for example, effects the overall control of the cutting and spreading device 1, so that the sensor units 21, 21 ', 31, 41, 41' are controlled by the central control unit 50 depending on predetermined parameters, such as the width of the web material 10 or the spread to be effected are moved to a defined target position.
  • the embodiment according to FIG. 3 substantially corresponds to the previously described exemplary embodiments according to FIGS.
  • the cutting and spreading device 1 shown in FIG. 3 only has the first control loop 20 for positionally accurate feeding of the web material 10 to the cutting device 3 and the second control loop 30 Control of the spreading of the partial webs 10a, 10b, 10c has.
  • 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 alignment device 5, the cutting device 3, the spreader 4 and the dancer shaft device 6 formed by the rotary 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 displacement 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 this 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.
  • the middle partial web 10b is cut through in the transverse direction QR, guided over the pair of rollers 4.2 and the partial web ends obtained by the cutting through are connected to each other again.

Landscapes

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

Abstract

L'invention concerne un dispositif de découpage d'un matériau en bande (10) en une pluralité de bandes partielles par découpage longitudinal et écartement des bandes partielles, comprenant un moyen de distribution (2) servant à produire le matériau en bande, au moins un moyen de découpage (3) conçu pour générer au moins un découpage longitudinal dans le matériau en bande, au moins un moyen d'écartement (4) permettant de dévier les bandes partielles (10, 10b, 10c), obtenus selon l'au moins un découpage longitudinal, au moins partiellement transversalement à leur sens de transport (FR) et de les espacer les uns des autres par la déviation, un premier circuit de régulation (20) permettant de commander la position du matériau en bande (10) transversalement à sa direction de transport (FR) avant de l'amener au moyen de découpage (3) et au moins un second circuit de régulation (30) coopérant avec le moyen d'écartement et permettant de commander la déviation d'au moins une bande partielle (10a, 10b, 10c) transversalement à sa direction de transport (FR).
PCT/EP2014/075694 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 WO2015082286A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14805837.3A 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
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
DE102013113289.8 2013-12-02
DE102013113289.8A DE102013113289A1 (de) 2013-12-02 2013-12-02 Vorrichtung sowie Verfahren zum Schneiden eines Bahnmaterials in Teilbahnen und Spreizen der Teilbahnen

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WO2015082286A1 true WO2015082286A1 (fr) 2015-06-11

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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

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EP (2) EP3216731B1 (fr)
DE (1) DE102013113289A1 (fr)
WO (1) WO2015082286A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096197A (en) * 1981-04-03 1982-10-13 Stumpf G O Gmbh & Co Kg Apparatus for depositing a web of material on a table
EP0309818A2 (fr) * 1987-10-01 1989-04-05 Focke & Co. (GmbH & Co.) Dispositif pour séparer des bandes de matériau en (deux) bandes partielles
GB2239965A (en) * 1990-01-16 1991-07-17 North American Mfg Apparatus and method for guiding a moving strip.
EP1388516A2 (fr) * 2002-08-09 2004-02-11 Maschinenfabrik Wifag Dispositif pour ajuster le répérage d'une découpeuse
DE102008005392A1 (de) * 2008-01-21 2009-07-30 Manroland Ag Bahnspreizeinrichtung für eine Rotationsdruckmaschine und damit ausgerüstete Rotationsdruckmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE202008000890U1 (de) * 2008-01-21 2008-03-20 Man Roland Druckmaschinen Ag Bahnspreizeinrichtung für eine Rotationsdruckmaschine und damit ausgerüstete Rotationsdruckmaschine
DE102009008936A1 (de) 2009-02-13 2010-08-26 Khs Ag Schneid- und Spreizvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096197A (en) * 1981-04-03 1982-10-13 Stumpf G O Gmbh & Co Kg Apparatus for depositing a web of material on a table
EP0309818A2 (fr) * 1987-10-01 1989-04-05 Focke & Co. (GmbH & Co.) Dispositif pour séparer des bandes de matériau en (deux) bandes partielles
GB2239965A (en) * 1990-01-16 1991-07-17 North American Mfg Apparatus and method for guiding a moving strip.
EP1388516A2 (fr) * 2002-08-09 2004-02-11 Maschinenfabrik Wifag Dispositif pour ajuster le répérage d'une découpeuse
DE102008005392A1 (de) * 2008-01-21 2009-07-30 Manroland Ag Bahnspreizeinrichtung für eine Rotationsdruckmaschine und damit ausgerüstete Rotationsdruckmaschine

Also Published As

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DE102013113289A1 (de) 2015-06-03
EP3216731A1 (fr) 2017-09-13
EP3216731B1 (fr) 2020-04-01
EP3077306B1 (fr) 2019-02-27
EP3077306A1 (fr) 2016-10-12

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