EP3514090A1 - Device for automatically cutting and removing a web and method for same with an auxiliary roller - Google Patents

Device for automatically cutting and removing a web and method for same with an auxiliary roller Download PDF

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Publication number
EP3514090A1
EP3514090A1 EP19157477.1A EP19157477A EP3514090A1 EP 3514090 A1 EP3514090 A1 EP 3514090A1 EP 19157477 A EP19157477 A EP 19157477A EP 3514090 A1 EP3514090 A1 EP 3514090A1
Authority
EP
European Patent Office
Prior art keywords
web
roller
funnel
residual
cutting device
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.)
Granted
Application number
EP19157477.1A
Other languages
German (de)
French (fr)
Other versions
EP3514090B1 (en
Inventor
Fabian Sundermann
Frank Hoffmann
Werner Beckonert
Thomas Sehlleier
Rolf Kammann
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP3514090A1 publication Critical patent/EP3514090A1/en
Application granted granted Critical
Publication of EP3514090B1 publication Critical patent/EP3514090B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H20/00—Advancing webs
    • B65H20/14—Advancing webs by direct action on web of moving fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/14—Means for treating work or cutting member to facilitate cutting by tensioning the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1854—Means for removing cut-out material or waste by non mechanical means by air under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • 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
    • B65H2301/41487—Winding slitting trimming edge
    • 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
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5151—Cutting handled material transversally to feeding direction
    • 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
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5155—Cutting handled material longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/31—Suction box; Suction chambers

Definitions

  • edge strips are produced by a longitudinal continuous cut, it is necessary at the beginning of the cutting process that especially the end of the edge strip, i. H. the area in which the longitudinal cutting knife has for the first time entered the material web for severing the same also to cut transversely to the longitudinal direction L.
  • the DE 20 2011 004 608 U1 shows a device in which a longitudinal cutting knife continuously cuts the material web into a partial web and into an edge strip.
  • the longitudinal cutting blade produces an incision which at the same time forms the boundary between the partial web and the edge strip.
  • the cross-cutting of the material web, in particular of the edge strip is effected by a cross-cutting knife, which has a cutting blade and a separating device, which causes a separation of the edge strip from the part web before the cross-cutting of the edge strip.
  • the cutting blade finally cuts through the edge strip, wherein the material web fed further in the longitudinal direction L runs onto the cutting blade in the area of the edge strip, jams there and is forcibly fed to the discharge device.
  • the leading separating device can negatively influence the cross cutting of the edge strip over the cutting blade.
  • an uncontrolled jamming of the material web is formed on the cutting blade, and in special situations it does not come to the reliable removal of the edge strip on the discharge device.
  • Another disadvantage is that in the removal process, the strips are not separated from the web after the longitudinal section, whereby edge effects occur.
  • the object of the present invention is to provide a device and a method which enables a simple, reliable and secure cross-separation of the material web even at high web speeds.
  • cross-cutting or cross-cutting is understood to mean a severing of the residual web (edge strip) transversely to the longitudinal direction of the fed material web.
  • the essence of the invention is that the discharge device is suitable - without external assistance - to dissipate the residual web after cross-cutting.
  • the discharge device is suitable - without external assistance - to dissipate the residual web after cross-cutting.
  • An external separating device integrated on the cross-cutting blade detects the residual web and directs it into the discharge device
  • the invention provides exclusively the discharge device for an automatic retraction and removal of the residual web.
  • a negative pressure prevails in the discharge device, so that automatically after the cross cutting the residual web is sucked into the discharge device.
  • the present invention has the advantage that a plurality of partial webs can be produced and the discharge device can dissipate several residual webs simultaneously, which are formed when trimming the material web.
  • An essential advantage of the invention is that a separation of the residual web from the partial web takes place well in front of the cross-cutting device. This means that after a cross-cutting the residual web is separated from the part track far in front of the cross-cutting device, so that it is avoided that the edges of the residual web contact the edge of the part web and thus negative edge effects or edge defects occur.
  • the discharge device has a plurality of discharge channels in order to suck off a plurality of residual webs, in particular that the discharge channels can be changed in their position relative to the material web.
  • the discharge device to a pressure medium, which can create a desired negative pressure to reliably suck the residual webs.
  • the pressure means may be, for example, a fan which works centrally for each discharge channel. It can also be provided that each discharge channel has an individual pressure medium.
  • the discharge channels are individually variable in their position to each other, which depends on the position of the longitudinal section of the material.
  • the displacement of the discharge channels can be done manually or automatically via actuators, so that a full automation of the device according to the invention is conceivable.
  • the discharge device may comprise at least one funnel, which is formed with an inlet to discharge the residual web.
  • each discharge channel has an individual funnel in order to discharge the residual web at its inlet.
  • a corresponding negative pressure sets during the automatic trimming of the web, whereby the residual web is automatically sucked through the inlet of the hopper.
  • the term “funnel” is to be understood as a component which does not necessarily have a changing cross section. Ex. Is it conceivable that the funnel has a constant cross section or varying cross sections. The term “funnel” can be equated within the scope of the invention with the term "nozzle”.
  • the removal device can be positioned on a first roller, which ensures transport of the material web, wherein in particular the geometry of the funnel in the region of the inlet is at least partially adapted to the geometry of the first roller.
  • the first roller can, for example, continue to transport the partial web or partial webs, wherein, for example, a corresponding deflection of the transport direction of the partial web or partial webs takes place on the first roller.
  • the slitter is upstream of the first roller, wherein the cross-cutting device is downstream of the first roller. So that the residual web is reliably removed from the discharge device, the discharge device is as close as possible to the first roller.
  • the first roller has a cylindrical shape and rotates about an axis, wherein the geometry of the funnel in the region of the inlet is designed like a circle segment.
  • the hopper can be guided as close to the first roller, whereby a corresponding negative pressure within the hopper is established, which manages to automatically pull the residual web into the discharge device after the cross-cutting.
  • the invention can provide that within the funnel a preferred roller is arranged to remove the residual web improved.
  • the preferred roller which is likewise mounted about an axis of rotation, within the funnel and detects the residual web, after a transverse separation has taken place outside the discharge device.
  • an active promotion or an active transport of the residual web in the direction of the discharge channel wherein via the pressure medium of the discharge advantageously a corresponding negative pressure within the respective funnel is provided.
  • About the rotation of the preferred roller results in a uniform train in the residual web and a reliable separation of the residual web of the partial web.
  • it can thereby be achieved that negative edge effects on the partial web and / or on the residual web as well as the underflow of the partial web through the residual web is avoided.
  • the preferred roller can extend through a multiplicity of hoppers arranged adjacent to one another, wherein in particular each hopper has an opening.
  • the funnel with its funnel housing ensures a continuous increase in the flow rate of the air, at the same time reducing air turbulence.
  • the funnel housing has a funnel-like geometry, in particular narrows in its cross section.
  • a measure improving the invention can provide that the preferred roller is rotatably arranged inside the funnel such that a first air flow, which flows below the preferred roller, forms a second air flow, which flows above the preferred roller.
  • the preferred roller is arranged within the funnel such that the first air flow reliably pulls the residual web from the outside into the funnel.
  • the second air flow which flows above the feed roller, causes the residual web to reliably detach again from the rotating feed roller.
  • the first air flow can also have the function to reliably press the residual web to the preferred roller, so that a satisfactory transport of the residual web is ensured by the discharge device.
  • the volumetric flow rate of the first airflow may, according to an aspect of the invention, be greater than the second airflow that flows above the preferredroller.
  • At least one closing element is provided, which can be brought between a closed position and an open position, wherein in the closed position, an opening of the funnel is closed and in the open position, the opening of the funnel is open.
  • the closure element located in the closed position the negative pressure within the funnel can be increased, wherein a train interruption in the material web during cross-cutting is simultaneously reduced.
  • the closing element is in the closed position. If the residual web start within the discharge device and is reliably dissipated there, in particular by the preferred roller, the closing element can be moved into the open position to effect an additional air flow into the interior of the funnel.
  • the power of the pressure medium during operation can advantageously be reduced in order to produce the same volume flow.
  • the invention comprises that in the region of the inlet, in particular downstream of the first roller, the cross-cutting device is arranged. About the negative pressure within the hopper, the residual web is pressed to the cross-cutting device and finally separated from her there, so that the start of the residual web is automatically sucked into the hopper and is detected accordingly by the air flow.
  • the discharge device may comprise at least one auxiliary roller which can be brought between two positions, wherein in the first position the auxiliary roller acts on the first roller and in the second position the auxiliary roller is spaced from the first roller. So that no web tension dips, interruptions cut, web breaks, etc. arise during cross cutting, the auxiliary roller is preferably in the first position. If a cross-cutting occurs, in particular in the area of the longitudinal cutting device no train interruption in the material web, which would be disadvantageous.
  • the control of the auxiliary roll via a control unit in particular sensors may be provided which detect to what extent a transverse separation has already occurred, or the residual web is already reliably located in the discharge device, etc.
  • a drive, the auxiliary roller in his offset each position in particular, the drive can be a pneumatic drive.
  • the drive can be a pneumatic drive.
  • the Have a closing element on a separate drive, with a pneumatic drive is also conceivable here.
  • the auxiliary roll can be rotatably mounted on the hopper.
  • the invention may include that the auxiliary roll is rotatably mounted on a housing element, wherein in particular the housing element has the closing element. It can also be provided that the auxiliary roll is moved linearly between said positions. A combination of rotation and linear guide of the auxiliary roll to bring them between the two mentioned positions is also conceivable within the subject invention.
  • the closing element and the auxiliary roll may be combined, so that only one actuator is required for moving into the appropriate position.
  • the housing element may be rotatable and / or movable in the device according to the invention, in particular to move the auxiliary roller and / or the closing element in the desired position.
  • the invention can be developed in such a way that the inlet of the funnel in the direction of the cross-cutting device has an enlarged area that is free of the first roller.
  • a clearance is formed through the enlarged area of the inlet, through which reliable air flow can enter the hopper from outside, without the first roller hindering the flow of air.
  • the enlarged area has been found to be particularly advantageous in the context of the invention, since an automatic removal of the residual web takes place after the cross-cutting via the discharge device.
  • a large air flow passes from the outside through the enlarged area, wherein the air flow reliably detects the transverse separated residual web at the same time.
  • the discharge device has a suction space into which the discharge channels open.
  • the residual webs can be forwarded accordingly, in particular distributed, for example, to allow processing or recycling of the residual web and / or to allow targeted disposal of the residual web.
  • the preferred roller may at least partially extend out of the hopper, wherein in particular within the hopper a Flow setting that flows below the feed roller.
  • the funnel housing may be formed such that at least partially the preferred roller extends from the funnel.
  • An advantage of this embodiment is that the preferred roller and / or the funnel are easier to mount and / or replace.
  • the cross-cutting device may comprise a cutting blade, which may be formed jagged. It is also conceivable that the cross-cutting device is movable and / or removable independently of the discharge device to the material web. Also, the invention comprises that the discharge device including the cross-cutting device from a remote position to the material web, which corresponds for example to a continuous operating position, is displaceable in a closer position to the material web, which represents the cutting position in which the cross-cutting device cuts through the residual web. After the cross-cutting of the residual web has been effected in this way, and the residual web has been detected by the discharge device, a more distant position can be taken again to the material web, so that the risk of injury to an operator is minimized by the cross-cutting device. Alternatively, it can also be provided that the cross-cutting device is arranged extendable on the discharge device, in particular on the hopper.
  • the material web can be a plastic film or a web of paper, textile, fleece, aluminum foil, copper foil or the like.
  • the longitudinal cutting device can have natural knife elements, cutting elements or wedges in order to be able to carry out a corresponding longitudinal cut in the longitudinal direction.
  • a welding agent such as a laser, comes as a cutting tool in question.
  • these cutting means have the advantage not to wear.
  • the longitudinal section is also conceivable with two mutually running shear rollers.
  • the cross-cutting device which is mounted further downstream than the longitudinal cutting device, may be provided with a control unit.
  • This control unit can calculate the time difference in which the cross cutting device enters the material web.
  • the funnel and / or the preferred roller can be arranged in such a way to the longitudinal cutting device that, as of the longitudinal cutting device, the residual web is separated from the partial web.
  • the invention includes that the feed roller may be arranged in the overall arrangement in such a way that the separation from the longitudinal cutting device results from the position of the feed roller and / or the first roller and / or the second roller.
  • the above object is achieved by a method according to all features of claim 11. It is particularly advantageous that the discharge device ensures that the cross-separated residual web reliably enters the funnel from the outside. All advantages of the device according to the invention can also relate to the inventive method.
  • the cross-cutting of the residual web can be carried out with a time delay to a longitudinal separation of the longitudinal cutting device.
  • a control unit can be used, which activates the longitudinal cutting device and / or the cross-cutting device accordingly.
  • a particularly advantageous embodiment of the invention is that the pressure within the funnel is adjusted by a closing element, which can be brought in particular between a closed position and an open position, wherein in the closed position, an opening of the funnel is closed and opened in the open position, the opening of the funnel is.
  • the closing element can assume the closed position before the cross-cutting of the residual web, in particular if the discharge device reliable Removes residual web, the closing element is moved to the open position.
  • a corresponding negative pressure within the funnel is created before the cross-cutting, which is achieved during cross-cutting, that reliably the cross-separated residual web enters the funnel.
  • the closing element can be converted into the open position, whereby an additional air inlet is formed, which can cause, for example, that the residual web reliably separates again from the preferred roller or does not adhere to this.
  • an auxiliary roll may abut against the first roll when the cross-cutting takes place in order to prevent a break in the web of material.
  • Said auxiliary roll can be advantageously brought between two positions, wherein in the first position, the auxiliary roller acts on the first roller and in the second position, the auxiliary roller is spaced from the first roller. When the auxiliary roll is in the second position, there is a uniform pull in the residual web and a reliable separation from the residual web to the partial web.
  • a preferred roller can be arranged within the hopper, which reliably dissipates the residual web.
  • the preferred roller favors the removal of the residual web within the discharge device and a reliable separation, whereby a uniform train in the residual web is effected.
  • the method allows a plurality of residual webs, which are parallel to each other, to be removed simultaneously.
  • a plurality of funnels are provided within the discharge device, wherein in discharge channels the residual webs are passed, which are downstream of the funnels.
  • the residual web is separated from the partial web far in front of the cross-cutting device, in particular the separation of the residual web from the partial web takes place before the removal device.
  • the immediate separation of the residual web from the partial web has the advantage that the residual web with the partial web can not beat each other after a cross-cutting has occurred. Thus, edge defects on the partial web can be effectively prevented.
  • the hopper and / or the preferred roller are arranged in such a way to the longitudinal cutting device, that after the cross cutting from the longitudinal cutting device, the residual web is separated from the partial web.
  • a possible embodiment of a device 1 for automatically cutting a material web 2 is shown.
  • the material web 2 is simplified in the Fig. 2 to 5 shown, which is trimmed by a slitting device 60 and a cross-cutting device 70, which will be discussed below.
  • the device 1 has a discharge device 10, which has a plurality of discharge channels 11, wherein each discharge channel 11 opens into an extraction space 26.
  • a funnel 12 is provided at the suction chamber 26th opposite end of the discharge channel 11, which has an inlet 13 as an opening.
  • a first roller 31 is shown, which is arranged at a distance from a second roller 32.
  • the material web 2 is guided in the longitudinal direction L via the second roller 32 in the direction of the first roller 31 and moved.
  • a longitudinal cutting device 60 which continuously cuts through the material web 2 in at least one partial web 3 and a residual web 4 in the longitudinal direction L.
  • the material web 1 is severed at several points, so that a multiplicity of partial webs 3 and residual webs 4 are formed.
  • the material web 2 may be, for example, a plastic film web which is continuously produced, for example, as a blown or flat film and fed in a longitudinal direction L of the device 1 according to the invention.
  • the longitudinal cutting device 60 may comprise knife elements in order to effect the longitudinal separation just described on the material web 2.
  • a cross-cutting device 70 is provided downstream of the longitudinal cutting device 60, which penetrates in the region of the residual web 4 with a cutting element not explicitly shown. This results in a cut on the residual web 4 transversely to the longitudinal direction L.
  • the fan 50 generates a corresponding negative pressure in the discharge device 10, in particular in the hopper 12, so that after the cross-cutting automatically acting from the outside air flow 5, the residual web 4 into the hopper 12 , The hopper 12 is positioned as close to the first roller 31 as possible to reliably suck the residual web 4 into the hopper 12.
  • the device 1 has a schematically illustrated closing element 14, which is movable between a closed position 21 and an open position 22.
  • the open position 22 is only in Fig. 2b and 5 shown, wherein the closure member 14 according to all figures also in such positions 21, 22 can be transferred.
  • the closing element 14 is shown in the closed position 21.
  • the funnel 12 has an opening 19 which can be closed or opened by the closing element 14.
  • the discharge device 10 has according to Fig. 2 an auxiliary roller 15 which is slidable and / or pivotable between two positions 23, 24, wherein in the first position 23, the auxiliary roller 15 abuts the first roller 31, and in the second position 24, the auxiliary roller 15 spaced from the first roller 31 , Before the cross-cutting takes place via the cross-cutting device 70, a longitudinal cut first takes place via the longitudinal cutting device 60, the auxiliary roller 15 acting on the first roller 31, which acts in FIG Fig. 2a is shown.
  • the advantage is that, when the auxiliary roller 15 abuts against the first roller 31, an interruption of the train in the material web 2, in particular in the region of the longitudinal cutting device 60, is prevented.
  • the removal device 10 ensures, after the cross-cutting, that the residual web 4 is reliably sucked into the hopper 12. If a reliable removal of the residual web 4 in the discharge device 10, the auxiliary roller 15 moves from the first position 23 (FIG. Fig. 2a ) to the second position 24 ( Fig. 2b ).
  • the device 1 has a preferred roller 16, which is arranged within the respective funnel 12.
  • the preferred roller 16 penetrates all of the hoppers 12 arranged adjacent to one another, the preferred roller 16 rotating about the axis 80 while the device 1 is in operation.
  • the preferred roller 16 rotates in a clockwise direction and causes an improved removal of the residual web 4 in the direction of discharge channel 11, in particular in the direction of suction 26.
  • a first air flow 17, which flows below the feed roller 16, and a second air flow 18, which forms above the feed roller 16 is flowing.
  • the first air flow 17 favors that the residual web 4 is reliably guided to the preferred roller 16 and then the residual web 4 is reliably transported in the direction of discharge channel 11.
  • the second air flow 18, which flows above the preferred roller 16, causes the residual web 4 to reliably detach from the preferred roller 16 again and thus no adhesion effects of the residual web 4 on the preferred roller 16 arise.
  • the auxiliary roller 15 is rotatably mounted on the hopper 12.
  • the auxiliary roller 15 is arranged on a housing element 20 which is pivotable about an axis 81.
  • the auxiliary roll 15 is simultaneously rotatable about the axis 84.
  • the movement of the housing element 20 can take place via a drive, in particular an electric or pneumatic drive, which is explicitly not shown. It is also conceivable that the auxiliary roller 15 can be moved linearly between its two positions 23, 24.
  • auxiliary roller 15 is arranged on the auxiliary roller 15, in particular on the housing element 20 or integrated with.
  • the auxiliary roller 15 is moved between its two positions 23, 24, there is simultaneously a co-movement of the closing element 14 in its closed position 21 or in the open position 22.
  • the auxiliary roller 15 is in operative connection with the closing element fourteenth
  • the inlet 13 of the hopper 12 in the direction of the cross-cutting device 70 has an enlarged area 25 which is free of the first roller 31.
  • the enlarged area 25 favors that from the environment a large air flow 5 within the Funnel housing 27 can penetrate, which can press the transverse separated web 4 in the funnel 12 at the same time.
  • FIG. 3 clarifies that it is off without the auxiliary roller 15 Fig. 2 can get along, with all the features off Fig. 2a and Fig. 2b also in the embodiment of Fig. 3 are included.
  • Fig. 3 corresponds to Fig. 4 essentially in accordance with the exemplary embodiment Fig. 2 , wherein the funnel housing 27 is designed differently, so that at least partially the preferred roller 16 extends from the hopper 12. According to Fig. 4 only results in a first air flow 17, which flows below the feed roller 16.
  • the embodiment acc. Fig. 4 shows how Fig. 3 no preferred roller 16, wherein it is also conceivable, the embodiment according to Fig. 4 with the preferred roller 16 according to Fig. 2a and Fig. 2b to combine.
  • the embodiment according to Fig. 5 essentially corresponds to the embodiment according to Fig. 2a and Fig. 2b , wherein the embodiment according to Fig. 5 without advantage roller 16 and without auxiliary roller 15 manages.
  • the remaining features of the embodiment according to Fig. 5 correspond to the explanations of the previously described Fig. 2 to Fig. 4 ,
  • the transverse separation of the residual web 4 takes place with a time delay to a longitudinal separation of the longitudinal cutting device 60.
  • the pressure within the funnel 12 can be adjusted inter alia by the closing element 14, which is movable between the closed position 21 and the open position 22. Before the cross-cutting of the residual web 4, the closing element 14 assumes the closed position 21. If after a defined time a reliable removal of the residual web 4 via the discharge device 10, the closing element 14 is transferred to the open position 22, whereby an assisting compensation air flow flows through the opening 19 in the hopper 12. Among other things, this equalizing air flow may cause it to transition into the second airflow 18 or trigger enhanced flow effects within the hopper 12.
  • the discharge channels 11 are mutually displaceable in the longitudinal direction of the axis of rotation of the first roller 31, so that the distance between the Ab technologicalkanälen 11 is adjustable.
  • the material web 2, which is transported via the rollers 31, 32, can be cut in various ways, wherein at the edge of the material web 2 residual webs 4 are formed, which can also be referred to as edge strips.
  • Narrower funnels 12 are provided in the middle of the widened funnels 12 in order to suck off residual webs 4, which are narrower. These narrower residual webs 4 can also be referred to as central stripe.
  • each funnel 12 has an opening 28 through which the preferred roller 16 extends, the geometry of the opening 28 substantially corresponding to the geometry of the preferred roller 16.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Details Of Cutting Devices (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung (1) zum automatischen Schneiden einer Materialbahn (2), mit einer Längsschneidevorrichtung (60), mittels der die Materialbahn (2) in eine Längsrichtung L in Teilbahnen (3) und Restbahnen (4) durchtrennbar ist, einer Abführvorrichtung (10) zum automatischen Abführen der erzeugten Restbahnen (4), einer nach der Längsschneidevorrichtung (60) nachgelagerten Querschneidevorrichtung (70) zum Durchtrennen der Restbahnen (4) quer zur Längsrichtung L, wobeidie Abführvorrichtung (10) an eine erste Walze (31) positionierbar ist, die für einen Transport der Materialbahn (2) sorgt, unddie Abführvorrichtung (10) mindestens eine Hilfswalze (15) aufweist, die zwischen zwei Positionen (23, 24) bringbar ist, wobei in der ersten Position (23) die Hilfswalze (15) an der ersten Walze (31) wirkt und in der zweiten Position (24) die Hilfswalze (15) beabstandet zur ersten Walze (31) ist.The invention relates to a device (1) for automatic cutting of a material web (2), with a longitudinal cutting device (60) by means of which the material web (2) can be severed in a longitudinal direction L in partial webs (3) and residual webs (4), a discharge device (10) for automatically discharging the generated residual webs (4), a transverse cutting device (70) downstream of the slitting device (60) for severing the residual webs (4) transversely to the longitudinal direction L, the discharging device (10) being positionable on a first roller (31) is, which ensures a transport of the material web (2), and the discharge device (10) at least one auxiliary roll (15) which can be brought between two positions (23, 24), wherein in the first position (23) the auxiliary roll (15 ) acts on the first roller (31) and in the second position (24) the auxiliary roller (15) is spaced from the first roller (31).

Description

Vorrichtungen zum randseitigen Schneiden einer Materialbahn in Gestalt einer Kunststofffolienbahn sind bekannt. Das randseitige Beschneiden einer solchen Materialbahn ist üblich, um einen sauberen Randbereich der Materialbahn zu erzeugen und beispielsweise Breitenschwankungen zu verändern bzw. zu eliminieren.Devices for marginal cutting of a material web in the form of a plastic film web are known. The edge trimming of such a material web is customary in order to produce a clean edge region of the material web and, for example, to change or eliminate width fluctuations.

Es hat sich gezeigt, dass bei höher entwickelten Produktionsanlagen für die Herstellung der soeben genannten Materialbahnen, wie Kunststofffolien, es bekannt ist, die erzeugten Randstreifen nicht nur abzusaugen bzw. abzuführen, sondern diese Randstreifen mindestens für eine geordnete Entsorgung oder Wiederverwertung aufzuwickeln oder sogleich Inline einer Wiederverwertung zuzuführen.It has been found that in more advanced production equipment for the production of the just-mentioned material webs, such as plastic films, it is known not only to suck off or dissipate the generated edge strips, but to wind these edge strips at least for an orderly disposal or recycling or immediately inline one To recycle.

Da die Randstreifen durch einen in Längsrichtung erfolgenden kontinuierlichen Schnitt erzeugt werden, ist es zu Beginn des Schneidvorganges erforderlich, dass vor allem das Ende des Randstreifens, d. h. den Bereich, in welchem das Längsschneidemesser erstmalig in die Materialbahn zum Durchtrennen derselben eingetreten ist, auch quer zur Längsrichtung L zu durchtrennen.Since the edge strips are produced by a longitudinal continuous cut, it is necessary at the beginning of the cutting process that especially the end of the edge strip, i. H. the area in which the longitudinal cutting knife has for the first time entered the material web for severing the same also to cut transversely to the longitudinal direction L.

Die DE 20 2011 004 608 U1 zeigt eine Vorrichtung, bei der ein Längsschneidmesser die Materialbahn kontinuierlich in eine Teilbahn und in einen Randstreifen durchtrennt. Das Längsschneidmesser erzeugt hierbei einen Einschnitt, welcher zugleich die Grenze zwischen der Teilbahn und dem Randstreifen bildet. Das Quertrennen der Materialbahn, insbesondere des Randstreifens, erfolgt durch ein Quertrennmesser, das eine Schneidklinge sowie eine Separiereinrichtung aufweist, welche vor dem Quertrennen des Randstreifens eine Separierung des Randstreifens von der Teilbahn bewirkt. Bei weiter fortschreitender Annäherung des Quertrennmessers an die Materialbahn durchtrennt schließlich die Schneidklinge den Randstreifen, wobei die weiter in Längsrichtung L zugeführte Materialbahn im Bereich des Randstreifens auf die Schneidklinge aufläuft, sich dort staut und zwangsweise der Abführvorrichtung zugeführt wird. Es hat sich nachteiligerweise gezeigt, dass die voreilende Separiereinrichtung das Quertrennen des Randstreifen über die Schneidklinge negativ beeinflussen kann. Zudem besteht die Gefahr, dass ein unkontrolliertes Stauen der Materialbahn an der Schneidklinge entsteht, und in Sondersituationen es nicht zur zuverlässigen Abführung des Randstreifens über die Abführvorrichtung kommt. Ein weiterer Nachteil ist, dass im Abförderprozess die Streifen nach dem Längsschnitt nicht von der Bahn separiert werden, wodurch Kanteneffekte entstehen.The DE 20 2011 004 608 U1 shows a device in which a longitudinal cutting knife continuously cuts the material web into a partial web and into an edge strip. The longitudinal cutting blade produces an incision which at the same time forms the boundary between the partial web and the edge strip. The cross-cutting of the material web, in particular of the edge strip, is effected by a cross-cutting knife, which has a cutting blade and a separating device, which causes a separation of the edge strip from the part web before the cross-cutting of the edge strip. As the cross-cutting blade continues to approach the material web, the cutting blade finally cuts through the edge strip, wherein the material web fed further in the longitudinal direction L runs onto the cutting blade in the area of the edge strip, jams there and is forcibly fed to the discharge device. It has disadvantageously been shown that the leading separating device can negatively influence the cross cutting of the edge strip over the cutting blade. In addition, there is a risk that an uncontrolled jamming of the material web is formed on the cutting blade, and in special situations it does not come to the reliable removal of the edge strip on the discharge device. Another disadvantage is that in the removal process, the strips are not separated from the web after the longitudinal section, whereby edge effects occur.

Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung sowie ein Verfahren bereitzustellen, das einfach, zuverlässig und sicher eine Quertrennung der Materialbahn auch bei hohen Bahngeschwindigkeiten ermöglicht.The object of the present invention is to provide a device and a method which enables a simple, reliable and secure cross-separation of the material web even at high web speeds.

Die Aufgabe der vorliegenden Erfindung wird durch sämtliche Merkmale des Anspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.The object of the present invention is achieved by all features of claim 1. Advantageous embodiments and modifications of the invention are the subject of the dependent claims.

Unter Quertrennung oder Quertrennen wird im Sinne der Erfindung ein Durchtrennen der Restbahn (Randstreifen) quer zur Längsrichtung der zugeführten Materialbahn verstanden.For the purposes of the invention, cross-cutting or cross-cutting is understood to mean a severing of the residual web (edge strip) transversely to the longitudinal direction of the fed material web.

Der Kern der Erfindung ist es, dass die Abführvorrichtung geeignet ist - ohne fremde Hilfestellung - nach dem Quertrennen die Restbahn abzuführen. Im Gegensatz zum genannten Stand der Technik, in dem gemäß der DE 20 2011 004 608 U1 eine externe Separiereinrichtung integriert am Quertrennmesser die Restbahn erfasst und in die Abführvorrichtung lenkt, sorgt erfindungsgemäß ausschließlich die Abführvorrichtung für ein automatisches Einziehen und Abführen der Restbahn. Beispielsweise ist es denkbar, dass ein derartiger Unterdruck in der Abführvorrichtung herrscht, so dass automatisch nach dem Quertrennen die Restbahn in die Abführvorrichtung gesaugt wird. Zudem weist die vorliegende Erfindung den Vorteil auf, dass eine Vielzahl an Teilbahnen herstellbar ist und die Abführvorrichtung mehrere Restbahnen gleichzeitig abführen kann, die beim Beschneiden der Materialbahn entstehen.The essence of the invention is that the discharge device is suitable - without external assistance - to dissipate the residual web after cross-cutting. In contrast to the cited prior art, in which according to the DE 20 2011 004 608 U1 An external separating device integrated on the cross-cutting blade detects the residual web and directs it into the discharge device, according to the invention provides exclusively the discharge device for an automatic retraction and removal of the residual web. For example, it is conceivable that such a negative pressure prevails in the discharge device, so that automatically after the cross cutting the residual web is sucked into the discharge device. In addition, the present invention has the advantage that a plurality of partial webs can be produced and the discharge device can dissipate several residual webs simultaneously, which are formed when trimming the material web.

Ein wesentlicher Vorteil der Erfindung ist, dass eine Separierung der Restbahn von der Teilbahn weit vor der Querschneidevorrichtung erfolgt. Das bedeutet, dass nach einem Quertrennen die Restbahn weit vor der Querschneidevorrichtung von der Teilbahn separiert wird, so dass vermieden wird, dass die Kanten der Restbahn mit der Kante der Teilbahn sich kontaktieren und somit negative Kanteneffekte bzw. Kantendefekte entstehen.An essential advantage of the invention is that a separation of the residual web from the partial web takes place well in front of the cross-cutting device. This means that after a cross-cutting the residual web is separated from the part track far in front of the cross-cutting device, so that it is avoided that the edges of the residual web contact the edge of the part web and thus negative edge effects or edge defects occur.

Vorteilhafterweise kann es vorgesehen sein, dass die Abführvorrichtung mehrere Abführkanäle aufweist, um mehrere Restbahnen abzusaugen, insbesondere dass die Abführkanäle in ihrer Position zur Materialbahn veränderbar sind. Vorteilhafterweise weist die Abführvorrichtung ein Druckmittel auf, welches einen gewünschten Unterdruck entstehen lässt, um zuverlässig die Restbahnen abzusaugen. Das Druckmittel kann zum Beispiel ein Gebläse sein, welches zentral für jeden Abführkanal arbeitet. Ebenfalls kann es vorgesehen sein, dass jeder Abführkanal ein individuelles Druckmittel aufweist.Advantageously, it may be provided that the discharge device has a plurality of discharge channels in order to suck off a plurality of residual webs, in particular that the discharge channels can be changed in their position relative to the material web. Advantageously, the discharge device to a pressure medium, which can create a desired negative pressure to reliably suck the residual webs. The pressure means may be, for example, a fan which works centrally for each discharge channel. It can also be provided that each discharge channel has an individual pressure medium.

Besonders vorteilhaft ist, dass die Abführkanäle individuell zueinander in ihrer Position veränderbar sind, welches von der Position des Längsschnittes an dem Material abhängt. Die Verschiebung der Abführkanäle kann manuell oder auch automatisch über Stellglieder erfolgen, so dass eine Vollautomatisierung der erfindungsgemäßen Vorrichtung denkbar ist.It is particularly advantageous that the discharge channels are individually variable in their position to each other, which depends on the position of the longitudinal section of the material. The displacement of the discharge channels can be done manually or automatically via actuators, so that a full automation of the device according to the invention is conceivable.

In einer weiteren die Erfindung verbessernden Maßnahme kann die Abführvorrichtung mindestens einen Trichter aufweisen, der mit einem Einlass ausgebildet ist, um die Restbahn abzuführen. Vorteilhafterweise weist jeder Abführkanal einen individuellen Trichter auf, um an seinem Einlass die Restbahn abzuführen. Im Trichter stellt sich ein entsprechender Unterdruck während des automatischen Beschneidens der Materialbahn ein, wodurch automatisch die Restbahn durch den Einlass des Trichters gesaugt wird. Im Rahmen der Erfindung ist unter der Bezeichnung "Trichter" ein Bauelement zu verstehen, das nicht unbedingt einen sich verändernden Querschnitt aufweist. Bsp. Ist es denkbar, dass der Trichter einen konstanten Querschnitt oder variierende Querschnitte aufweist. Die Bezeichnung "Trichter" kann im Rahmen der Erfindung mit dem Begriff "Stutzen" gleichgesetzt werden.In a further measure improving the invention, the discharge device may comprise at least one funnel, which is formed with an inlet to discharge the residual web. Advantageously, each discharge channel has an individual funnel in order to discharge the residual web at its inlet. In the hopper, a corresponding negative pressure sets during the automatic trimming of the web, whereby the residual web is automatically sucked through the inlet of the hopper. In the context of the invention, the term "funnel" is to be understood as a component which does not necessarily have a changing cross section. Ex. Is it conceivable that the funnel has a constant cross section or varying cross sections. The term "funnel" can be equated within the scope of the invention with the term "nozzle".

Zudem kann es vorteilhaft sein, dass die Abführvorrichtung an eine erste Walze positionierbar ist, die für einen Transport der Materialbahn sorgt, wobei insbesondere die Geometrie des Trichters im Bereich des Einlasses zumindest teilweise der Geometrie der ersten Walze angepasst ist. Die erste Walze kann zum Beispiel die Teilbahn bzw. Teilbahnen weitertransportieren, wobei zum Beispiel an der ersten Walze eine entsprechende Umlenkung der Transportrichtung der Teilbahn bzw. Teilbahnen erfolgt. Vorteilhafterweise befindet sich die Längsschneidevorrichtung vorgelagert zur ersten Walze, wobei die Querschneidevorrichtung der ersten Walze nachgelagert ist. Damit die Restbahn zuverlässig von der Abführvorrichtung abgeführt wird, befindet sich die Abführvorrichtung möglichst nahe an der ersten Walze. Über den entstehenden Unterdruck innerhalb des Trichters erfolgt ein Luftstrom von außen durch den Einlass, wobei erfindungsgemäß eine günstige Luftströmung am Einlass entsteht, die zuverlässig die Restbahn in den Trichter führt. Vorzugsweise weist die erste Walze eine zylindrische Form auf und rotiert um eine Achse, wobei die Geometrie des Trichters im Bereich des Einlasses kreissegmentartig ausgeführt ist. Somit kann der Trichter möglichst nahe an die erste Walze geführt werden, wodurch sich ein entsprechender Unterdruck innerhalb des Trichters einstellt, der es schafft, automatisch nach dem Quertrennen die Restbahn in die Abführvorrichtung zu ziehen. Zudem kann die Erfindung vorsehen, dass innerhalb des Trichters eine Vorzugwalze angeordnet ist, um die Restbahn verbessert abzuführen. Vorteilhafterweise befindet sich die Vorzugwalze, die ebenfalls um eine Rotationsachse gelagert ist, innerhalb des Trichters und erfasst die Restbahn, nachdem eine Quertrennung außerhalb der Abführvorrichtung erfolgt ist. Durch die Rotation der Vorzugwalze erfolgt eine aktive Förderung bzw. ein aktiver Transport der Restbahn in Richtung Abführkanal, wobei über das Druckmittel der Abführvorrichtung vorteilhafterweise weiter ein entsprechender Unterdruck innerhalb des jeweiligen Trichters bereitgestellt wird. Über die Rotation der Vorzugwalze ergibt sich ein gleichmäßiger Zug in der Restbahn sowie eine zuverlässige Separierung der Restbahn von der Teilbahn. Vorteilhafterweise kann hierdurch erzielt werden, dass negative Kanteneffekte an der Teilbahn und/oder an der Restbahn sowie das Unterlaufen der Teilbahn durch die Restbahn vermieden wird.In addition, it may be advantageous that the removal device can be positioned on a first roller, which ensures transport of the material web, wherein in particular the geometry of the funnel in the region of the inlet is at least partially adapted to the geometry of the first roller. The first roller can, for example, continue to transport the partial web or partial webs, wherein, for example, a corresponding deflection of the transport direction of the partial web or partial webs takes place on the first roller. Advantageously, the slitter is upstream of the first roller, wherein the cross-cutting device is downstream of the first roller. So that the residual web is reliably removed from the discharge device, the discharge device is as close as possible to the first roller. About the resulting negative pressure within the funnel, an air flow from the outside through the inlet, wherein according to the invention a favorable air flow at the inlet is formed, which reliably leads the residual web into the hopper. Preferably, the first roller has a cylindrical shape and rotates about an axis, wherein the geometry of the funnel in the region of the inlet is designed like a circle segment. Thus, the hopper can be guided as close to the first roller, whereby a corresponding negative pressure within the hopper is established, which manages to automatically pull the residual web into the discharge device after the cross-cutting. In addition, the invention can provide that within the funnel a preferred roller is arranged to remove the residual web improved. Advantageously, the preferred roller, which is likewise mounted about an axis of rotation, within the funnel and detects the residual web, after a transverse separation has taken place outside the discharge device. By the rotation of the preferred roller takes place an active promotion or an active transport of the residual web in the direction of the discharge channel, wherein via the pressure medium of the discharge advantageously a corresponding negative pressure within the respective funnel is provided. About the rotation of the preferred roller results in a uniform train in the residual web and a reliable separation of the residual web of the partial web. Advantageously, it can thereby be achieved that negative edge effects on the partial web and / or on the residual web as well as the underflow of the partial web through the residual web is avoided.

Vorteilhafterweise kann die Vorzugwalze sich durch eine Vielzahl an benachbart zueinander angeordneten Trichtern erstrecken, wobei insbesondere jeder Trichter einen Durchbruch aufweist. Zusätzlich und/oder alternativ sorgt der Trichter mit seinem Trichtergehäuse für einen kontinuierlichen Anstieg der Strömungsgeschwindigkeit der Luft, wobei gleichzeitig Luftverwirbelungen verringert werden. Hierzu kann es vorteilhaft sein, dass das Trichtergehäuse eine trichterartige Geometrie aufweist, insbesondere sich in ihrem Querschnitt verengt.Advantageously, the preferred roller can extend through a multiplicity of hoppers arranged adjacent to one another, wherein in particular each hopper has an opening. Additionally and / or alternatively, the funnel with its funnel housing ensures a continuous increase in the flow rate of the air, at the same time reducing air turbulence. For this purpose, it may be advantageous that the funnel housing has a funnel-like geometry, in particular narrows in its cross section.

Eine die Erfindung verbessernde Maßnahme kann vorsehen, dass die Vorzugwalze derart innerhalb des Trichters drehbar angeordnet ist, dass sich eine erste Luftströmung, die unterhalb der Vorzugwalze strömt, eine zweite Luftströmung bildet, die oberhalb der Vorzugwalze strömt. Hierbei ist es denkbar, dass die Vorzugwalze derart innerhalb des Trichters angeordnet ist, dass die erste Luftströmung zuverlässig die Restbahn von außen in den Trichter zieht. Die zweite Luftströmung, die oberhalb der Vorzugwalze strömt, bewirkt, dass die Restbahn sich zuverlässig wieder von der rotierenden Vorzugwalze löst. Die erste Luftströmung kann zudem die Funktion haben, die Restbahn zuverlässig an die Vorzugwalze zu drücken, damit ein zufriedenstellender Transport der Restbahn durch die Abführvorrichtung sichergestellt ist. Der Volumenstrom der ersten Luftströmung kann gemäß einem Aspekt der Erfindung größer sein, als die zweite Luftströmung, die oberhalb der Vorzugwalze strömt.A measure improving the invention can provide that the preferred roller is rotatably arranged inside the funnel such that a first air flow, which flows below the preferred roller, forms a second air flow, which flows above the preferred roller. In this case, it is conceivable that the preferred roller is arranged within the funnel such that the first air flow reliably pulls the residual web from the outside into the funnel. The second air flow, which flows above the feed roller, causes the residual web to reliably detach again from the rotating feed roller. The first air flow can also have the function to reliably press the residual web to the preferred roller, so that a satisfactory transport of the residual web is ensured by the discharge device. The volumetric flow rate of the first airflow may, according to an aspect of the invention, be greater than the second airflow that flows above the preferredroller.

Des Weiteren kann es vorteilhaft sein, dass mindestens ein Schließelement vorgesehen ist, das zwischen einer Schließstellung und einer Offenstellung bringbar ist, wobei in der Schließstellung eine Öffnung des Trichters geschlossen ist und in der Offenstellung die Öffnung des Trichters geöffnet ist. Über das in der Schließstellung sich befindende Schließelement kann der Unterdruck innerhalb des Trichters vergrößert werden, wobei eine Zugunterbrechung in der Materialbahn beim Quertrennen gleichzeitig verringert wird. Das bedeutet, dass sich vorteilhafterweise beim Quertrennen das Schließelement in der Schließstellung befindet. Ist der Restbahnanfang innerhalb der Abführvorrichtung und wird dort zuverlässig abgeführt, insbesondere durch die Vorzugwalze, kann das Schließelement in die Offenstellung verfahren werden, um einen zusätzlichen Luftstrom in das Innere des Trichters zu bewirken. Hierdurch lässt sich vorteilhafterweise die Leistung des Druckmittels im laufenden Betrieb reduzieren, um den gleichen Volumenstrom zu erzeugen.Furthermore, it may be advantageous that at least one closing element is provided, which can be brought between a closed position and an open position, wherein in the closed position, an opening of the funnel is closed and in the open position, the opening of the funnel is open. By means of the closure element located in the closed position, the negative pressure within the funnel can be increased, wherein a train interruption in the material web during cross-cutting is simultaneously reduced. This means that advantageously in cross-cutting the closing element is in the closed position. If the residual web start within the discharge device and is reliably dissipated there, in particular by the preferred roller, the closing element can be moved into the open position to effect an additional air flow into the interior of the funnel. As a result, the power of the pressure medium during operation can advantageously be reduced in order to produce the same volume flow.

Zudem umfasst die Erfindung, dass im Bereich des Einlasses, insbesondere nachgelagert zur ersten Walze die Querschneidevorrichtung angeordnet ist. Über den Unterdruck innerhalb des Trichters wird die Restbahn an die Querschneidevorrichtung gedrückt und schließlich von ihr dort getrennt, so dass der Restbahnanfang automatisch in den Trichter gesaugt wird und entsprechend durch die Luftströmung erfasst wird.In addition, the invention comprises that in the region of the inlet, in particular downstream of the first roller, the cross-cutting device is arranged. About the negative pressure within the hopper, the residual web is pressed to the cross-cutting device and finally separated from her there, so that the start of the residual web is automatically sucked into the hopper and is detected accordingly by the air flow.

In einer weiteren, die Erfindung verbessernden Maßnahme kann die Abführvorrichtung mindestens eine Hilfswalze aufweisen, die zwischen zwei Positionen bringbar ist, wobei in der ersten Position die Hilfswalze an der ersten Walze wirkt und in der zweiten Position die Hilfswalze beabstandet zur ersten Walze ist. Damit beim Quertrennen keine Materialbahnspannungseinbrüche, Schnittunterbrechungen, Bahnabrisse etc. entstehen, befindet sich die Hilfswalze vorzugsweise in der ersten Position. Erfolgt ein Quertrennen, entsteht insbesondere im Bereich der Längsschneidevorrichtung keine Zugunterbrechung in der Materialbahn, welches nachteilig wäre. Vorteilhafterweise erfolgt die Ansteuerung der Hilfswalze über eine Steuereinheit, insbesondere können Sensoren vorgesehen sein, die erkennen, inwieweit eine Quertrennung bereits stattgefunden hat, oder die Restbahn bereits zuverlässig sich in der Abführvorrichtung befindet etc. Beispielsweise ist es denkbar, dass ein Antrieb die Hilfswalze in seine jeweilige Position versetzt, wobei insbesondere der Antrieb ein pneumatischer Antrieb sein kann. Alternativ und/oder zusätzlich kann das Schließelement über einen separaten Antrieb verfügen, wobei auch hier ein pneumatischer Antrieb denkbar ist.In a further measure improving the invention, the discharge device may comprise at least one auxiliary roller which can be brought between two positions, wherein in the first position the auxiliary roller acts on the first roller and in the second position the auxiliary roller is spaced from the first roller. So that no web tension dips, interruptions cut, web breaks, etc. arise during cross cutting, the auxiliary roller is preferably in the first position. If a cross-cutting occurs, in particular in the area of the longitudinal cutting device no train interruption in the material web, which would be disadvantageous. Advantageously, the control of the auxiliary roll via a control unit, in particular sensors may be provided which detect to what extent a transverse separation has already occurred, or the residual web is already reliably located in the discharge device, etc. For example, it is conceivable that a drive, the auxiliary roller in his offset each position, in particular, the drive can be a pneumatic drive. Alternatively and / or additionally, the Have a closing element on a separate drive, with a pneumatic drive is also conceivable here.

Vorzugsweise kann die Hilfswalze drehbar am Trichter gelagert sein. Zudem kann die Erfindung mit umfassen, dass die Hilfswalze an einem Gehäuseelement drehbar gelagert ist, wobei insbesondere das Gehäuseelement das Schließelement aufweist. Ebenfalls kann vorgesehen sein, dass die Hilfswalze linear zwischen den genannten Positionen bewegt wird. Eine Kombination aus Drehung und Linearführung der Hilfswalze, um diese zwischen den beiden genannten Positionen zu bringen, ist ebenfalls innerhalb des Erfindungsgegenstandes denkbar. Zudem ist es denkbar, dass das Schließelement und die Hilfswalze kombiniert sein können, so dass nur ein Aktor zum Bewegen in die geeignete Position erforderlich ist. Das Gehäuseelement kann drehbar und/oder bewegbar in der erfindungsgemäßen Vorrichtung angeordnet sein, um insbesondere die Hilfswalze und/oder das Schließelement in die gewünschte Position zu bewegen.Preferably, the auxiliary roll can be rotatably mounted on the hopper. In addition, the invention may include that the auxiliary roll is rotatably mounted on a housing element, wherein in particular the housing element has the closing element. It can also be provided that the auxiliary roll is moved linearly between said positions. A combination of rotation and linear guide of the auxiliary roll to bring them between the two mentioned positions is also conceivable within the subject invention. In addition, it is conceivable that the closing element and the auxiliary roll may be combined, so that only one actuator is required for moving into the appropriate position. The housing element may be rotatable and / or movable in the device according to the invention, in particular to move the auxiliary roller and / or the closing element in the desired position.

Des Weiteren kann die Erfindung derart weitergebildet sein, dass der Einlass des Trichters in Richtung Querschneidevorrichtung einen vergrößerten Bereich aufweist, der frei von der ersten Walze ist. Es bildet sich ein Freiraum durch den vergrößerten Bereich des Einlasses, durch den zuverlässig Luftströmung von außen in den Trichter gelangen kann, ohne das die erste Walze die Luftströmung behindert. Besonders vorteilhaft hat sich der vergrößerte Bereich im Rahmen der Erfindung gezeigt, da eine automatische Abführung der Restbahn nach dem Quertrennen über die Abführvorrichtung erfolgt. Eine große Luftströmung gelangt von außen durch den vergrößerten Bereich, wobei die Luftströmung gleichzeitig die quergetrennte Restbahn zuverlässig erfasst.Furthermore, the invention can be developed in such a way that the inlet of the funnel in the direction of the cross-cutting device has an enlarged area that is free of the first roller. A clearance is formed through the enlarged area of the inlet, through which reliable air flow can enter the hopper from outside, without the first roller hindering the flow of air. The enlarged area has been found to be particularly advantageous in the context of the invention, since an automatic removal of the residual web takes place after the cross-cutting via the discharge device. A large air flow passes from the outside through the enlarged area, wherein the air flow reliably detects the transverse separated residual web at the same time.

Vorteilhafterweise weist die Abführvorrichtung einen Absaugraum auf, in den die Abführkanäle münden. Im Absaugraum können die Restbahnen entsprechend weitergeleitet werden, insbesondere verteilt werden, um beispielsweise eine Verarbeitung oder Wiederverwertung der Restbahn zu ermöglichen und/oder eine gezielte Entsorgung der Restbahn zu ermöglichen.Advantageously, the discharge device has a suction space into which the discharge channels open. In the suction space, the residual webs can be forwarded accordingly, in particular distributed, for example, to allow processing or recycling of the residual web and / or to allow targeted disposal of the residual web.

In einer weiteren Ausführungsform der Erfindung kann sich die Vorzugwalze zumindest teilweise aus dem Trichter erstrecken, wobei sich insbesondere innerhalb des Trichters eine Strömung einstellt, die unterhalb der Vorzugwalze strömt. Beispielsweise kann das Trichtergehäuse derart ausgebildet sein, dass sich zumindest teilweise die Vorzugwalze aus dem Trichter erstreckt. In einer derartigen Ausführungsform kann es denkbar sein, dass sich lediglich eine Strömung innerhalb des Trichters einstellt, die zum Beispiel unterhalb der Vorzugwalze strömt und die Funktion der ersten Luftströmung hat. Ein Vorteil dieser Ausführungsform ist, dass die Vorzugwalze und/oder der Trichter einfacher montierbar und/oder auswechselbar sind.In a further embodiment of the invention, the preferred roller may at least partially extend out of the hopper, wherein in particular within the hopper a Flow setting that flows below the feed roller. For example, the funnel housing may be formed such that at least partially the preferred roller extends from the funnel. In such an embodiment, it may be conceivable that only a flow within the funnel sets, for example, flows below the preferred roller and has the function of the first air flow. An advantage of this embodiment is that the preferred roller and / or the funnel are easier to mount and / or replace.

Die Querschneidevorrichtung kann eine Schneidklinge aufweisen, die gezackt ausgebildet sein kann. Ebenfalls ist es denkbar, dass die Querschneidevorrichtung unabhängig von der Abführvorrichtung an die Materialbahn bewegbar und/oder entfernbar ist. Ebenfalls umfasst die Erfindung, dass die Abführvorrichtung einschließlich der Querschneidevorrichtung aus einer entfernten Position zur Materialbahn, welche beispielsweise einer Dauerbetriebsstellung entspricht, in eine nähere Position zur Materialbahn verlagerbar ist, welche die Schneidposition darstellt, in welcher die Querschneidevorrichtung die Restbahn durchtrennt. Nachdem das Quertrennen der Restbahn auf diese Weise bewirkt worden ist, und die Restbahn von der Abführvorrichtung erfasst worden ist, kann wieder eine entferntere Position zur Materialbahn eingenommen werden, so dass auch das Verletzungsrisiko für einen Bediener durch die Querschneidevorrichtung minimiert wird. Alternativ kann auch vorgesehen sein, dass die Querschneidevorrichtung ausfahrbar an der Abführvorrichtung, insbesondere am Trichter angeordnet ist.The cross-cutting device may comprise a cutting blade, which may be formed jagged. It is also conceivable that the cross-cutting device is movable and / or removable independently of the discharge device to the material web. Also, the invention comprises that the discharge device including the cross-cutting device from a remote position to the material web, which corresponds for example to a continuous operating position, is displaceable in a closer position to the material web, which represents the cutting position in which the cross-cutting device cuts through the residual web. After the cross-cutting of the residual web has been effected in this way, and the residual web has been detected by the discharge device, a more distant position can be taken again to the material web, so that the risk of injury to an operator is minimized by the cross-cutting device. Alternatively, it can also be provided that the cross-cutting device is arranged extendable on the discharge device, in particular on the hopper.

Gemäß der vorliegenden Erfindung kann die Materialbahn eine Kunststofffolie oder eine Bahn aus Papier, Textil, Flies, Alufolie, Kupferfolie oder dergleichen ausgebildet sein.According to the present invention, the material web can be a plastic film or a web of paper, textile, fleece, aluminum foil, copper foil or the like.

Vorteilhafterweise kann die Längsschneidevorrichtung natürliche Messerelemente, Schneidelemente oder Keile aufweisen, um einen entsprechenden Längsschnitt in Längsrichtung durchführen zu können. Es ist jedoch auch möglich, den Längsschnitt durch einen Strahl eines Mediums wie Wasser vorzunehmen. Auch ein Schweißmittel, wie ein Laser, kommt als Schneidmittel in Frage. Gegenüber den Längsschneideeinrichtungen mit Messern oder Keilen haben diese Schneidmittel den Vorteil nicht zu verschleißen. Sie haben jedoch den Nachteil eines hohen Medien- oder Energieverbrauchs. Der Längsschnitt ist zudem mit zwei gegeneinander laufenden Scherenwalzen denkbar.Advantageously, the longitudinal cutting device can have natural knife elements, cutting elements or wedges in order to be able to carry out a corresponding longitudinal cut in the longitudinal direction. However, it is also possible to make the longitudinal section through a jet of a medium such as water. A welding agent, such as a laser, comes as a cutting tool in question. Compared with the slitting devices with knives or wedges, these cutting means have the advantage not to wear. However, they have the disadvantage of high media or energy consumption. The longitudinal section is also conceivable with two mutually running shear rollers.

Vorteilhafterweise kann die Querschneidevorrichtung, die weiter stromabwärts als die Längsschneidevorrichtung angebracht ist, mit einer Steuereinheit versehen sein. Diese Steuereinheit kann die Zeitdifferenz, in welcher die Querschneidevorrichtung in die Materialbahn eintritt, berechnen. Ein Vorteil der automatisch arbeitenden Querschneidevorrichtung ist, dass der Querschnitt zum Trennen der Restbahn von der Materialbahn nicht mehr händisch vorgenommen werden muss, was während des Maschinenbetriebes zu kompliziert ist und deswegen Maschinenstillstände verursacht.Advantageously, the cross-cutting device, which is mounted further downstream than the longitudinal cutting device, may be provided with a control unit. This control unit can calculate the time difference in which the cross cutting device enters the material web. An advantage of the automatic cross-cutting device is that the cross-section for separating the residual web from the material web no longer has to be made manually, which is too complicated during machine operation and therefore causes machine downtime.

Vorteilhafterweise kann der Trichter und/oder die Vorzugwalze derart zur Längsschneidevorrichtung angeordnet sein, dass ab der Längsschneidevorrichtung die Restbahn von der Teilbahn separiert ist. Die Erfindung schließt mit ein, dass die Vorzugswalze derart in der Gesamtanordnung angeordnet sein kann, dass die Separierung ab der Längsschneidevorrichtung sich aus der Position der Vorzugswalze und/oder der ersten Walze und/oder der zweiten Walze sich ergibt.Advantageously, the funnel and / or the preferred roller can be arranged in such a way to the longitudinal cutting device that, as of the longitudinal cutting device, the residual web is separated from the partial web. The invention includes that the feed roller may be arranged in the overall arrangement in such a way that the separation from the longitudinal cutting device results from the position of the feed roller and / or the first roller and / or the second roller.

Zudem wird die oben genannte Aufgabe durch ein Verfahren gemäß sämtlicher Merkmale des Anspruchs 11 gelöst. Besonders vorteilhaft ist, dass die Abführvorrichtung dafür sorgt, dass zuverlässig von außen die quergetrennte Restbahn in den Trichter gelangt. Sämtliche Vorteile zur erfindungsgemäßen Vorrichtung lassen sich zudem auf das erfindungsgemäße Verfahren beziehen.In addition, the above object is achieved by a method according to all features of claim 11. It is particularly advantageous that the discharge device ensures that the cross-separated residual web reliably enters the funnel from the outside. All advantages of the device according to the invention can also relate to the inventive method.

Vorteilhafterweise kann das Quertrennen der Restbahn zeitversetzt zu einem Längstrennen der Längsschneidevorrichtung erfolgen. Hierfür kann eine Steuereinheit zum Einsatz kommen, die entsprechend die Längsschneidevorrichtung und/oder die Querschneidevorrichtung aktiviert.Advantageously, the cross-cutting of the residual web can be carried out with a time delay to a longitudinal separation of the longitudinal cutting device. For this purpose, a control unit can be used, which activates the longitudinal cutting device and / or the cross-cutting device accordingly.

Eine besonders vorteilhafte Ausführung der Erfindung ist, dass der Druck innerhalb des Trichters durch ein Schließelement eingestellt wird, das insbesondere zwischen einer Schließstellung und einer Offenstellung bringbar ist, wobei in der Schließstellung eine Öffnung des Trichters geschlossen ist und in der Offenstellung die Öffnung des Trichters geöffnet ist. Vorteilhafterweise kann vor dem Quertrennen der Restbahn das Schließelement die Schließstellung einnehmen, insbesondere wenn die Abführvorrichtung zuverlässig die Restbahn abführt, das Schließelement in die Offenstellung verfahren wird. Somit wird vor dem Quertrennen ein entsprechender Unterdruck innerhalb des Trichters erstellt, wodurch beim Quertrennen erreicht wird, dass zuverlässig die quergetrennte Restbahn in den Trichter gelangt. Erfolgt nach einer gewissen Zeit eine zuverlässige Abführung der Restbahn, kann das Schließelement in die Offenstellung überführt werden, wodurch ein zusätzlicher Lufteinlass entsteht, der zum Beispiel bewirken kann, dass die Restbahn zuverlässig sich von der Vorzugwalze wieder trennt bzw. an dieser nicht anhaftet.A particularly advantageous embodiment of the invention is that the pressure within the funnel is adjusted by a closing element, which can be brought in particular between a closed position and an open position, wherein in the closed position, an opening of the funnel is closed and opened in the open position, the opening of the funnel is. Advantageously, the closing element can assume the closed position before the cross-cutting of the residual web, in particular if the discharge device reliable Removes residual web, the closing element is moved to the open position. Thus, a corresponding negative pressure within the funnel is created before the cross-cutting, which is achieved during cross-cutting, that reliably the cross-separated residual web enters the funnel. If after a certain time a reliable removal of the residual web, the closing element can be converted into the open position, whereby an additional air inlet is formed, which can cause, for example, that the residual web reliably separates again from the preferred roller or does not adhere to this.

Vorteilhafter Weise kann eine Hilfswalze an der ersten Walze anliegen, wenn das Quertrennen erfolgt, um eine Zugunterbrechung in der Materialbahn zu verhindern. Die genannte Hilfswalze kann vorteilhafter Weise zwischen zwei Positionen gebracht werden, wobei in der ersten Position die Hilfswalze an der ersten Walze wirkt und in der zweiten Position die Hilfswalze beabstandet zur ersten Walze ist. Wenn die Hilfswalze sich in der zweiten Position befindet, ergibt sich ein gleichmäßiger Zug in der Restbahn sowie eine zuverlässige Separierung von der Restbahn zur Teilbahn.Advantageously, an auxiliary roll may abut against the first roll when the cross-cutting takes place in order to prevent a break in the web of material. Said auxiliary roll can be advantageously brought between two positions, wherein in the first position, the auxiliary roller acts on the first roller and in the second position, the auxiliary roller is spaced from the first roller. When the auxiliary roll is in the second position, there is a uniform pull in the residual web and a reliable separation from the residual web to the partial web.

Vorteilhafter Weise kann innerhalb des Trichters eine Vorzugwalze angeordnet sein, die die Restbahn zuverlässig abführt. Die Vorzugwalze begünstigt den Abtransport der Restbahn innerhalb der Abführvorrichtung sowie eine zuverlässige Separierung, wobei ein gleichmäßiger Zug in der Restbahn bewirkt wird.Advantageously, a preferred roller can be arranged within the hopper, which reliably dissipates the residual web. The preferred roller favors the removal of the residual web within the discharge device and a reliable separation, whereby a uniform train in the residual web is effected.

Vorteilhafter Weise ermöglicht das Verfahren, dass eine Vielzahl an Restbahnen, die parallel zueinander liegen, gleichzeitig abgeführt werden können. Hierfür sind mehrere Trichter innerhalb der Abführvorrichtung vorgesehen, wobei in Abführkanälen die Restbahnen hindurchgeführt werden, die den Trichtern nachgelagert sind.Advantageously, the method allows a plurality of residual webs, which are parallel to each other, to be removed simultaneously. For this purpose, a plurality of funnels are provided within the discharge device, wherein in discharge channels the residual webs are passed, which are downstream of the funnels.

Besonders bevorzugt kann vorgesehen sein, dass eine Separierung der Restbahn von der Teilbahn weit vor der Querschneidevorrichtung erfolgt, insbesondere die Separierung der Restbahn von der Teilbahn vor der Abführvorrichtung erfolgt. Die sofortige Separierung der Restbahn von der Teilbahn hat den Vorteil, dass die Restbahn mit der Teilbahn nicht gegeneinander schlagen kann, nachdem ein Quertrennen erfolgt ist. Somit können wirksam Kantendefekte an der Teilbahn verhindert werden.Particularly preferably, it can be provided that the residual web is separated from the partial web far in front of the cross-cutting device, in particular the separation of the residual web from the partial web takes place before the removal device. The immediate separation of the residual web from the partial web has the advantage that the residual web with the partial web can not beat each other after a cross-cutting has occurred. Thus, edge defects on the partial web can be effectively prevented.

Zudem kann es vorgesehen sein, dass der Trichter und/oder die Vorzugwalze derart zur Längsschneidevorrichtung angeordnet sind, dass nach dem Quertrennen ab der Längsschneidevorrichtung die Restbahn von der Teilbahn separiert wird.In addition, it can be provided that the hopper and / or the preferred roller are arranged in such a way to the longitudinal cutting device, that after the cross cutting from the longitudinal cutting device, the residual web is separated from the partial web.

Vorteilhafter Weise sind sämtliche Merkmale der Vorrichtungsansprüche mit den sämtlichen Merkmalen der Verfahrensansprüche kombinierbar.Advantageously, all features of the device claims can be combined with all the features of the method claims.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung im Einzelnen beschrieben sind. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein. Es zeigen:

Fig. 1
eine Seitenansicht einer erfindungsgemäßen Vorrichtung zum automatischen Schneiden einer Materialbahn,
Fig. 2 a, b
eine mögliche Ausführungsform der erfindungsgemäßen Vorrichtung gemäß Fig. 1,
Fig. 3
eine weitere Ausführungsvariante der Vorrichtung gemäß Fig. 1,
Fig. 4
ein noch weiteres Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung gemäß Fig. 1 und
Fig. 5
eine weitere Ausführungsform der erfindungsgemäßen Vorrichtung gemäß Fig. 1.
Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, embodiments of the invention are described in detail. The features mentioned in the claims and in the description may each be essential to the invention individually or in any desired combination. Show it:
Fig. 1
a side view of a device according to the invention for automatically cutting a material web,
Fig. 2 a, b
a possible embodiment of the device according to the invention Fig. 1 .
Fig. 3
a further embodiment of the device according to Fig. 1 .
Fig. 4
a still further embodiment of an inventive device according to Fig. 1 and
Fig. 5
a further embodiment of the device according to the invention according to Fig. 1 ,

In Fig. 1 ist eine mögliche Ausführungsform einer Vorrichtung 1 zum automatischen Schneiden einer Materialbahn 2 gezeigt. Die Materialbahn 2 ist vereinfacht in den Fig. 2 bis 5 gezeigt, die über eine Längsschneidevorrichtung 60 sowie eine Querschneidevorrichtung 70 beschnitten wird, worauf im Folgenden noch eingegangen wird. Die Vorrichtung 1 verfügt über eine Abführvorrichtung 10, die mehrere Abführkanäle 11 aufweist, wobei jeder Abführkanal 11 in einen Absaugraum 26 mündet. An der dem Absaugraum 26 gegenüberliegenden Ende des Abführkanals 11 ist jeweils ein Trichter 12 vorgesehen, der einen Einlass 13 als Öffnung aufweist.In Fig. 1 a possible embodiment of a device 1 for automatically cutting a material web 2 is shown. The material web 2 is simplified in the Fig. 2 to 5 shown, which is trimmed by a slitting device 60 and a cross-cutting device 70, which will be discussed below. The device 1 has a discharge device 10, which has a plurality of discharge channels 11, wherein each discharge channel 11 opens into an extraction space 26. At the suction chamber 26th opposite end of the discharge channel 11, a funnel 12 is provided in each case, which has an inlet 13 as an opening.

Zudem ist eine erste Walze 31 gezeigt, die beabstandet zu einer zweiten Walze 32 angeordnet ist. Die Materialbahn 2 wird in Längsrichtung L über die zweite Walze 32 in Richtung erste Walze 31 geführt und bewegt. Zwischen beiden Walzen 31, 32 befindet sich eine Längsschneidevorrichtung 60, die kontinuierlich in Längsrichtung L die Materialbahn 2 in mindestens eine Teilbahn 3 und eine Restbahn 4 durchtrennt. In den vorliegenden Ausführungsbeispielen erfolgt eine Durchtrennung der Materialbahn 1 an mehreren Stellen, so dass eine Vielzahl an Teilbahnen 3 und Restbahnen 4 entsteht. Bei der Materialbahn 2 kann es sich beispielsweise um eine Kunststofffolienbahn handeln, die zum Beispiel als Blas- oder Flachfolie kontinuierlich hergestellt und in einer Längsrichtung L der erfindungsgemäßen Vorrichtung 1 zugeführt wird.In addition, a first roller 31 is shown, which is arranged at a distance from a second roller 32. The material web 2 is guided in the longitudinal direction L via the second roller 32 in the direction of the first roller 31 and moved. Between two rollers 31, 32 there is a longitudinal cutting device 60 which continuously cuts through the material web 2 in at least one partial web 3 and a residual web 4 in the longitudinal direction L. In the present exemplary embodiments, the material web 1 is severed at several points, so that a multiplicity of partial webs 3 and residual webs 4 are formed. The material web 2 may be, for example, a plastic film web which is continuously produced, for example, as a blown or flat film and fed in a longitudinal direction L of the device 1 according to the invention.

Beispielsweise kann die Längsschneidevorrichtung 60 Messerelemente aufweisen, um die soeben beschriebene Längstrennung an der Materialbahn 2 zu bewirken.For example, the longitudinal cutting device 60 may comprise knife elements in order to effect the longitudinal separation just described on the material web 2.

Um die Restbahn 4 zuverlässig abzuführen und von der Teilbahn 3 zu trennen, ist stromabwärts zur Längsschneidevorrichtung 60 eine Querschneidevorrichtung 70 vorgesehen, die im Bereich der Restbahn 4 mit einem nicht explizit gezeigten Schneidelement eindringt. Hierdurch erfolgt ein Schnitt an der Restbahn 4 quer zur Längsrichtung L. Das Gebläse 50 erzeugt einen entsprechenden Unterdruck in der Abführvorrichtung 10, insbesondere im Trichter 12, so dass nach dem Quertrennen automatisch die von außen wirkende Luftströmung 5 die Restbahn 4 in den Trichter 12 führt. Der Trichter 12 ist möglichst nahe an der ersten Walze 31 positioniert, um zuverlässig die Restbahn 4 in den Trichter 12 einzusaugen. Besonders vorteilhaft ist, dass in sämtlichen Ausführungsbeispielen die Geometrie des Trichters 12 im Bereich des Einlasses 13, durch den die Restbahn 4 in den Trichter 12 eingesaugt wird, zumindest teilweise der Geometrie der ersten Walze 31 angepasst ist. Hierdurch lassen sich günstige Druckverhältnisse innerhalb des Trichters 12 erzielen, wobei gleichzeitig sichergestellt wird, dass zuverlässig die quergetrennte Restbahn 4 in den Trichter 12 gelangt.In order to dissipate the residual web 4 reliably and to separate it from the part web 3, a cross-cutting device 70 is provided downstream of the longitudinal cutting device 60, which penetrates in the region of the residual web 4 with a cutting element not explicitly shown. This results in a cut on the residual web 4 transversely to the longitudinal direction L. The fan 50 generates a corresponding negative pressure in the discharge device 10, in particular in the hopper 12, so that after the cross-cutting automatically acting from the outside air flow 5, the residual web 4 into the hopper 12 , The hopper 12 is positioned as close to the first roller 31 as possible to reliably suck the residual web 4 into the hopper 12. It is particularly advantageous that in all embodiments, the geometry of the funnel 12 in the region of the inlet 13, through which the residual web 4 is sucked into the hopper 12, at least partially adapted to the geometry of the first roller 31. In this way, favorable pressure conditions within the funnel 12 can be achieved, while at the same time ensuring that the transverse separated web 4 passes reliably into the funnel 12.

Wie in sämtlichen Ausführungsbeispielen gezeigt ist, weist die Vorrichtung 1 ein schematisch dargestelltes Schließelement 14 auf, das zwischen einer Schließstellung 21 und einer Offenstellung 22 bewegbar ist. Die Offenstellung 22 ist lediglich in Fig. 2b und 5 gezeigt, wobei das Schließelement 14 gemäß sämtlicher Figuren ebenfalls in derartige Stellungen 21, 22 überführbar ist. Insbesondere ist in den Fig. 2 bis 4 ist das Schließelement 14 in der Schließstellung 21 gezeigt. Der Trichter 12 weist eine Öffnung 19 auf, die durch das Schließelement 14 verschlossen oder geöffnet werden kann.As shown in all embodiments, the device 1 has a schematically illustrated closing element 14, which is movable between a closed position 21 and an open position 22. The open position 22 is only in Fig. 2b and 5 shown, wherein the closure member 14 according to all figures also in such positions 21, 22 can be transferred. In particular, in the Fig. 2 to 4 the closing element 14 is shown in the closed position 21. The funnel 12 has an opening 19 which can be closed or opened by the closing element 14.

Die Abführvorrichtung 10 weist gemäß Fig. 2 eine Hilfswalze 15 auf, die zwischen zwei Positionen 23, 24 verschiebbar und/oder schwenkbar ist, wobei in der ersten Position 23 die Hilfswalze 15 an der ersten Walze 31 anliegt, und in der zweiten Position 24 die Hilfswalze 15 beabstandet zur ersten Walze 31 ist. Bevor das Quertrennen über die Querschneidevorrichtung 70 erfolgt, erfolgt zunächst ein Längsschnitt über die Längsschneidevorrichtung 60, wobei die Hilfswalze 15 an der ersten Walze 31 wirkt, welches in Fig. 2a gezeigt ist. Der Vorteil ist, dass bei einem Anliegen der Hilfswalze 15 an der ersten Walze 31 eine Zugunterbrechung in der Materialbahn 2, insbesondere im Bereich der Längsschneidevorrichtung 60 verhindert wird. Die Abführvorrichtung 10 sorgt nach dem Quertrennen, dass zuverlässig die Restbahn 4 in den Trichter 12 gesaugt wird. Erfolgt eine zuverlässige Abführung der Restbahn 4 in der Abführvorrichtung 10, verfährt die Hilfswalze 15 von der ersten Position 23 (Fig. 2a) in die zweite Position 24 (Fig. 2b).The discharge device 10 has according to Fig. 2 an auxiliary roller 15 which is slidable and / or pivotable between two positions 23, 24, wherein in the first position 23, the auxiliary roller 15 abuts the first roller 31, and in the second position 24, the auxiliary roller 15 spaced from the first roller 31 , Before the cross-cutting takes place via the cross-cutting device 70, a longitudinal cut first takes place via the longitudinal cutting device 60, the auxiliary roller 15 acting on the first roller 31, which acts in FIG Fig. 2a is shown. The advantage is that, when the auxiliary roller 15 abuts against the first roller 31, an interruption of the train in the material web 2, in particular in the region of the longitudinal cutting device 60, is prevented. The removal device 10 ensures, after the cross-cutting, that the residual web 4 is reliably sucked into the hopper 12. If a reliable removal of the residual web 4 in the discharge device 10, the auxiliary roller 15 moves from the first position 23 (FIG. Fig. 2a ) to the second position 24 ( Fig. 2b ).

Gemäß Fig. 2 bis 4 weist die erfindungsgemäße Vorrichtung 1 eine Vorzugwalze 16 auf, die innerhalb des jeweiligen Trichters 12 angeordnet ist. Wie in Fig. 1 gezeigt ist, durchdringt die Vorzugwalze 16 sämtliche, zueinander benachbart angeordnete Trichter 12, wobei die Vorzugwalze 16 um die Achse 80 rotiert, während die Vorrichtung 1 in Betrieb ist. Die Vorzugwalze 16 rotiert im Uhrzeigersinn und bewirkt eine verbesserte Abführung der Restbahn 4 in Richtung Abführkanal 11, insbesondere in Richtung Absaugraum 26. Hierbei bildet sich eine erste Luftströmung 17, die unterhalb der Vorzugwalze 16 strömt, und eine zweite Luftströmung 18, die oberhalb der Vorzugwalze 16 strömt. Die erste Luftströmung 17 begünstigt, dass die Restbahn 4 zuverlässig an die Vorzugwalze 16 geführt wird und anschließend die Restbahn 4 zuverlässig in Richtung Abführkanal 11 transportiert wird. Es entsteht eine gleichmäßige Zugbeanspruchung auf die Materialbahn 2, wodurch eine zuverlässige Separierung der Restbahn 4 von der Teilbahn 3 im Bereich der Längsschneidevorrichtung 60 erfolgt, wenn die Hilfswalze 15 sich in ihrer zweiten Position 24 gemäß Fig. 2b befindet und sich das Schließelement 14 in der Offenstellung 22 befindet, die lediglich in Figur 5 gezeigt ist.According to Fig. 2 to 4 For example, the device 1 according to the invention has a preferred roller 16, which is arranged within the respective funnel 12. As in Fig. 1 4, the preferred roller 16 penetrates all of the hoppers 12 arranged adjacent to one another, the preferred roller 16 rotating about the axis 80 while the device 1 is in operation. The preferred roller 16 rotates in a clockwise direction and causes an improved removal of the residual web 4 in the direction of discharge channel 11, in particular in the direction of suction 26. Here, a first air flow 17, which flows below the feed roller 16, and a second air flow 18, which forms above the feed roller 16 is flowing. The first air flow 17 favors that the residual web 4 is reliably guided to the preferred roller 16 and then the residual web 4 is reliably transported in the direction of discharge channel 11. This results in a uniform tensile stress on the material web 2, whereby a reliable separation of the residual web 4 of the partial web 3 in the region of Longitudinal cutting device 60 takes place when the auxiliary roller 15 in its second position 24 according to Fig. 2b is located and the closing element 14 is in the open position 22, the only in FIG. 5 is shown.

Die zweite Luftströmung 18, die oberhalb der Vorzugwalze 16 strömt, bewirkt, dass die Restbahn 4 sich zuverlässig von der Vorzugwalze 16 wieder löst und somit keine Anhaftungseffekte der Restbahn 4 an der Vorzugwalze 16 entstehen.The second air flow 18, which flows above the preferred roller 16, causes the residual web 4 to reliably detach from the preferred roller 16 again and thus no adhesion effects of the residual web 4 on the preferred roller 16 arise.

In einer möglichen Ausführungsform der Erfindung, die schematisch in Fig. 2 gezeigt ist, ist die Hilfswalze 15 drehbar am Trichter 12 angeordnet. Hierbei ist die Hilfswalze 15 an einem Gehäuseelement 20 angeordnet, welches um eine Achse 81 verschwenkbar ist. Die Hilfswalze 15 ist gleichzeitig um die Achse 84 rotierbar. Die Bewegung des Gehäuseelementes 20 kann über einen Antrieb, insbesondere einen elektrischen oder pneumatischen Antrieb erfolgen, der explizit nicht gezeigt ist. Ebenfalls ist es denkbar, dass die Hilfswalze 15 linear zwischen ihren beiden Positionen 23, 24 bewegt werden kann.In a possible embodiment of the invention, which is schematically illustrated in FIG Fig. 2 is shown, the auxiliary roller 15 is rotatably mounted on the hopper 12. Here, the auxiliary roller 15 is arranged on a housing element 20 which is pivotable about an axis 81. The auxiliary roll 15 is simultaneously rotatable about the axis 84. The movement of the housing element 20 can take place via a drive, in particular an electric or pneumatic drive, which is explicitly not shown. It is also conceivable that the auxiliary roller 15 can be moved linearly between its two positions 23, 24.

Zudem kann gemäß Fig. 2a und 2b mit umfasst sein, dass das Schließelement 14 an der Hilfswalze 15, insbesondere am Gehäuseelement 20 angeordnet bzw. mit integriert ist. Wenn also die Hilfswalze 15 zwischen ihren beiden Positionen 23, 24 bewegt wird, erfolgt gleichzeitig eine Mitbewegung des Schließelementes 14 in seine Schließstellung 21 oder in die Offenstellung 22. Vorzugsweise ist die Hilfswalze 15 in Wirkverbindung mit dem Schließelement 14.In addition, according to Fig. 2a and 2 B be included with that the closing element 14 is arranged on the auxiliary roller 15, in particular on the housing element 20 or integrated with. Thus, when the auxiliary roller 15 is moved between its two positions 23, 24, there is simultaneously a co-movement of the closing element 14 in its closed position 21 or in the open position 22. Preferably, the auxiliary roller 15 is in operative connection with the closing element fourteenth

Wird über die Abführvorrichtung 10 die Restbahn 4 bzw. die Restbahnen 4 zuverlässig abgeführt, erfolgt ein Öffnungsvorgang des Schließelementes 14, wodurch zusätzlich Umgebungsluft durch die Öffnung 19 in den Trichter 12 eindringen kann, welches auch für die Ausführungsbeispiele gemäß Fig. 3 bis Fig. 5 zutrifft.If the residual web 4 or the residual webs 4 are reliably removed via the discharge device 10, an opening process of the closing element 14 takes place, as a result of which additional ambient air can penetrate through the opening 19 into the funnel 12, which is also suitable for the embodiments according to FIGS FIG. 3 to FIG. 5 true.

Damit zuverlässig nach dem Quertrennen die Restbahn 4 in den Trichter 12 eingesaugt wird, weist der Einlass 13 des Trichters 12 in Richtung Querschneidevorrichtung 70 einen vergrößerten Bereich 25 auf, der frei von der ersten Walze 31 ist. Der vergrößerte Bereich 25 begünstigt, dass aus der Umgebung eine große Luftströmung 5 innerhalb des Trichtergehäuses 27 eindringen kann, die gleichzeitig die quergetrennte Restbahn 4 in den Trichter 12 drücken kann.So that the residual web 4 is reliably sucked into the hopper 12 after the cross-cutting, the inlet 13 of the hopper 12 in the direction of the cross-cutting device 70 has an enlarged area 25 which is free of the first roller 31. The enlarged area 25 favors that from the environment a large air flow 5 within the Funnel housing 27 can penetrate, which can press the transverse separated web 4 in the funnel 12 at the same time.

Das Ausführungsbeispiel gemäß Fig. 3 verdeutlicht, dass es ohne die Hilfswalze 15 aus Fig. 2 auskommen kann, wobei sämtliche Merkmale aus Fig. 2a und Fig. 2b auch im Ausführungsbeispiel der Fig. 3 mit aufgenommen sind. Wie Fig. 3 entspricht Fig. 4 im Wesentlichen dem Ausführungsbeispiel gemäß Fig. 2, wobei das Trichtergehäuse 27 andersartig ausgeführt ist, so dass zumindest teilweise die Vorzugwalze 16 sich aus dem Trichter 12 erstreckt. Gemäß Fig. 4 ergibt sich lediglich eine erste Luftströmung 17, die unterhalb der Vorzugwalze 16 strömt. Das Ausführungsbeispiel gem. Fig. 4 weist wie Fig. 3 keine Vorzugwalze 16 auf, wobei es ebenfalls denkbar ist, das Ausführungsbeispiel gemäß Fig. 4 mit der Vorzugwalze 16 gemäß Fig. 2a und Fig. 2b zu kombinieren.The embodiment according to Fig. 3 clarifies that it is off without the auxiliary roller 15 Fig. 2 can get along, with all the features off Fig. 2a and Fig. 2b also in the embodiment of Fig. 3 are included. As Fig. 3 corresponds to Fig. 4 essentially in accordance with the exemplary embodiment Fig. 2 , wherein the funnel housing 27 is designed differently, so that at least partially the preferred roller 16 extends from the hopper 12. According to Fig. 4 only results in a first air flow 17, which flows below the feed roller 16. The embodiment acc. Fig. 4 shows how Fig. 3 no preferred roller 16, wherein it is also conceivable, the embodiment according to Fig. 4 with the preferred roller 16 according to Fig. 2a and Fig. 2b to combine.

Das Ausführungsbeispiel gemäß Fig. 5 entspricht im Wesentlichen dem Ausführungsbeispiel gemäß Fig. 2a und Fig. 2b, wobei das Ausführungsbeispiel gemäß Fig. 5 ohne Vorzugwalze 16 und ohne Hilfswalze 15 auskommt. Die übrigen Merkmale des Ausführungsbeispiels gemäß Fig. 5 entsprechen den Erläuterungen aus den zuvor beschriebenen Fig. 2 bis Fig. 4.The embodiment according to Fig. 5 essentially corresponds to the embodiment according to Fig. 2a and Fig. 2b , wherein the embodiment according to Fig. 5 without advantage roller 16 and without auxiliary roller 15 manages. The remaining features of the embodiment according to Fig. 5 correspond to the explanations of the previously described Fig. 2 to Fig. 4 ,

In sämtlichen Ausführungsbeispielen erfolgt das Quertrennen der Restbahn 4 zeitversetzt zu einem Längstrennen der Längsschneidevorrichtung 60. Der Druck innerhalb des Trichters 12 lässt sich unter anderem durch das Schließelement 14 einstellen, welches zwischen der Schließstellung 21 und der Offenstellung 22 bewegbar ist. Vor dem Quertrennen der Restbahn 4 nimmt das Schließelement 14 die Schließstellung 21 ein. Erfolgt nach einer definierten Zeit eine zuverlässige Abführung der Restbahn 4 über die Abführvorrichtung 10, wird das Schließelement 14 in die Offenstellung 22 überführt, wodurch eine unterstützende Ausgleichsluftströmung über die Öffnung 19 in den Trichter 12 einströmt. Diese Ausgleichsluftströmung kann unter anderem bewirken, dass diese in die zweite Luftströmung 18 übergeht, oder verbesserte Strömungseffekte innerhalb des Trichters 12 auslöst.In all embodiments, the transverse separation of the residual web 4 takes place with a time delay to a longitudinal separation of the longitudinal cutting device 60. The pressure within the funnel 12 can be adjusted inter alia by the closing element 14, which is movable between the closed position 21 and the open position 22. Before the cross-cutting of the residual web 4, the closing element 14 assumes the closed position 21. If after a defined time a reliable removal of the residual web 4 via the discharge device 10, the closing element 14 is transferred to the open position 22, whereby an assisting compensation air flow flows through the opening 19 in the hopper 12. Among other things, this equalizing air flow may cause it to transition into the second airflow 18 or trigger enhanced flow effects within the hopper 12.

Gemäß Fig. 1, die mit sämtlichen Ausführungsbeispielen gemäß Fig. 2 bis Fig. 5 kombinierbar ist, sind die Abführkanäle 11 untereinander in Längsrichtung der Rotationsachse der ersten Walze 31 verschiebbar, so dass der Abstand zwischen den Abführkanälen 11 einstellbar ist. Die Materialbahn 2, die über die Walzen 31, 32 transportiert wird, kann unterschiedlichst geschnitten werden, wobei am Rand der Materialbahn 2 Restbahnen 4 entstehen, die auch als Randstreifen bezeichnet werden können. Wie in Fig. 1 gezeigt ist, sind die Trichter 12, insbesondere links und rechts verbreitert ausgebildet, um breitere Restbahnen 4 absaugen zu können. Mittig zu den verbreiterten Trichtern 12 sind schmalere Trichter 12 vorgesehen, um Restbahnen 4 abzusaugen, die schmaler sind. Diese schmaleren Restbahnen 4 können auch als Mittelstreifen bezeichnet werden.According to Fig. 1 , which with all embodiments according to Fig. 2 to Fig. 5 can be combined, the discharge channels 11 are mutually displaceable in the longitudinal direction of the axis of rotation of the first roller 31, so that the distance between the Abführkanälen 11 is adjustable. The material web 2, which is transported via the rollers 31, 32, can be cut in various ways, wherein at the edge of the material web 2 residual webs 4 are formed, which can also be referred to as edge strips. As in Fig. 1 is shown, the funnels 12, in particular widened to the left and right, in order to be able to aspirate wider residual webs 4. Narrower funnels 12 are provided in the middle of the widened funnels 12 in order to suck off residual webs 4, which are narrower. These narrower residual webs 4 can also be referred to as central stripe.

Es ist zusätzlich denkbar, dass der Absaugraum 26 sämtliche Randstreifen und Mittelstreifen aufnehmen kann, um diese dem Gesamtprozess wieder zuzuführen oder diese Restbahnen zur Entsorgung weiterzuführen. Ebenfalls kann im Rahmen des Erfindungsgedankens gemäß Fig. 1 vorgesehen sein, dass der Absaugraum 26 mehrere voneinander getrennte Kavitäten aufweist, beispielsweise die verbreiterten Abführkanäle 11, die links und rechts angeordnet sind, in eine erste Kavität münden, und die schmaleren Abführkanäle 11 in eine getrennte zweite Kavität münden. Somit steht es dem Betreiber der erfindungsgemäßen Vorrichtung 1 frei, die Restbahnen 4 innerhalb der getrennten Kavitäten des Absaugraumes 26 nach entsprechenden Anforderungen "weiter zu verarbeiten". Das bedeutet, dass gewisse Restbahnen beispielsweise wieder zurück in den Gesamtprozess zugeführt werden sollen oder gewisse Restbahnen zu entsorgen sind. Gemäß Fig. 1 weist jeder Trichter 12 einen Durchbruch 28 auf, durch den die Vorzugwalze 16 sich erstreckt, wobei die Geometrie des Durchbruchs 28 im Wesentlichen der Geometrie der Vorzugwalze 16 entspricht.It is also conceivable that the suction chamber 26 can accommodate all edge strips and central strips in order to re-supply them to the overall process or to continue these residual webs for disposal. Likewise, within the scope of the inventive concept according to Fig. 1 be provided that the suction chamber 26 has a plurality of separate cavities, for example, the widened discharge channels 11, which are arranged on the left and right, open into a first cavity, and the narrower discharge channels 11 open into a separate second cavity. Thus, the operator of the device 1 according to the invention is free to "continue to process" the residual webs 4 within the separate cavities of the suction chamber 26 according to corresponding requirements. This means that certain residual webs, for example, are to be fed back into the overall process or certain residual webs have to be disposed of. According to Fig. 1 For example, each funnel 12 has an opening 28 through which the preferred roller 16 extends, the geometry of the opening 28 substantially corresponding to the geometry of the preferred roller 16.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Vorrichtungdevice
22
Materialbahnweb
33
Teilbahnpart web
44
Restbahnresidual web
55
Luftströmungairflow
1010
Abführvorrichtungdischarge device
1111
Abführkanaldischarge channel
1212
Trichterfunnel
1313
Einlassinlet
1414
Schließelementclosing element
1515
Hilfswalzeauxiliary roll
1616
Vorzugwalzeadvancement roller
1717
erste Luftströmungfirst airflow
1818
zweite Luftströmungsecond air flow
1919
Öffnungopening
2020
Gehäuseelementhousing element
2121
Schließstellungclosed position
2222
Offenstellungopen position
2323
erste Positionfirst position
2424
zweite Positionsecond position
2525
vergrößerter Bereichenlarged area
2626
Absaugraumsuction chamber
2727
Trichtergehäuse,Hopper housing,
2828
Durchbruchbreakthrough
3131
erste Walzefirst roller
3232
zweite Walzesecond roller
5050
Druckmittel, GebläsePressure medium, blower
6060
LängsschneidevorrichtungSlitter
7070
QuerschneidevorrichtungCross-cutting device
8080
Achseaxis
8181
Achseaxis
82 - 8482 - 84
Achseaxis

Claims (15)

Vorrichtung (1) zum automatischen Schneiden einer Materialbahn (2), mit einer Längsschneidevorrichtung (60), mittels der die Materialbahn (2) in eine Längsrichtung L in mindestens eine Teilbahn (3) und/oder mindestens eine Restbahn (4) durchtrennbar ist, einer Abführvorrichtung (10) zum automatischen Abführen der erzeugten Restbahn (4),
einer nach der Längsschneidevorrichtung (60) nachgelagerten Querschneidevorrichtung (70) zum Durchtrennen der Restbahn (4) quer zur Längsrichtung L, wobei die Abführvorrichtung (10) an eine erste Walze (31) positionierbar ist, die für einen Transport der Materialbahn (2) sorgt, und
die Abführvorrichtung (10) mindestens eine Hilfswalze (15) aufweist, die zwischen zwei Positionen (23, 24) bringbar ist, wobei in der ersten Position (23) die Hilfswalze (15) an der ersten Walze (31) wirkt und in der zweiten Position (24) die Hilfswalze (15) beabstandet zur ersten Walze (31) ist.Device (1) for automatically cutting a material web (2), having a longitudinal cutting device (60), by means of which the material web (2) can be severed in at least one partial web (3) and / or at least one residual web (4) in a longitudinal direction L, a discharge device (10) for automatically discharging the generated residual web (4),
a transverse cutting device (70) downstream of the longitudinal cutting device (60) for severing the residual web (4) transversely to the longitudinal direction L, the removal device (10) being positionable on a first roller (31) which ensures transport of the material web (2) , and
the removal device (10) has at least one auxiliary roll (15) which can be brought between two positions (23, 24), wherein in the first position (23) the auxiliary roll (15) acts on the first roll (31) and in the second Position (24), the auxiliary roller (15) spaced from the first roller (31). Vorrichtung (1) nach Anspruch 1,
dadurch gekennzeichnet,
dass eine Separierung der Restbahn (4) von der Teilbahn (3) weit vor der Querschneidevorrichtung (70) erfolgt und/oder dass die Abführvorrichtung (10) mehrere Abführkanäle (11) aufweist, um mehrere Restbahnen (4) abzusaugen, insbesondere dass die Abführkanäle (11) in ihrer Position zur Materialbahn (2) veränderbar sind.Device (1) according to claim 1,
characterized,
in that the residual web (4) is separated from the part web (3) far in front of the cross cutting device (70) and / or that the discharge device (10) has a plurality of discharge passages (11) in order to extract a plurality of residual webs (4), in particular that the discharge channels (11) are variable in their position to the material web (2). Vorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Abführvorrichtung (10) mindestens einen Trichter (12) aufweist, der mit einem Einlass (13) ausgebildet ist, um die Restbahn (4) abzuführen, wobei insbesondere die Geometrie des Trichters (12) im Bereich des Einlasses (13) zumindest teilweise der Geometrie der ersten Walze (31) angepasst ist.Device (1) according to one of the preceding claims,
characterized,
in that the discharge device (10) has at least one funnel (12) which is formed with an inlet (13) to discharge the residual web (4), wherein in particular the geometry of the funnel (12) in the region of the inlet (13) is at least partially the geometry of the first roller (31) is adjusted. Vorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass innerhalb des Trichters (12) eine Vorzugwalze (16) angeordnet ist, um die Restbahn (4) verbessert abzuführen, insbesondere dass die Vorzugwalze (16) derart innerhalb des Trichters (12) drehbar angeordnet ist, dass sich eine erste Luftströmung (17), die unterhalb der Vorzugwalze (16) strömt, und eine zweite Luftströmung (18) bildet, die oberhalb der Vorzugwalze (16) strömt.Device (1) according to one of the preceding claims,
characterized,
in that a preferred roller (16) is arranged within the funnel (12) in order to remove the residual web (4) in an improved manner, in particular that the preferred roller (16) is rotatably arranged within the funnel (12) such that a first air flow (17) which flows below the preferred roller (16) and forms a second air flow (18) which flows above the preferred roller (16). Vorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass mindestens ein Schließelement (14) vorgesehen ist, das zwischen einer Schließstellung (21) und einer Offenstellung (22) bringbar ist, wobei in der Schließstellung (21) eine Öffnung (19) des Trichters (12) geschlossen ist und in der Offenstellung (22) die Öffnung (19) des Trichters (12) geöffnet ist.Device (1) according to one of the preceding claims,
characterized,
in that at least one closing element (14) is provided which can be brought between a closed position (21) and an open position (22), wherein in the closed position (21) an opening (19) of the funnel (12) is closed and in the open position ( 22) the opening (19) of the funnel (12) is opened. Vorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass im Bereich des Einlasses (13), insbesondere nachgelagert zur ersten Walze (31) die Querschneidevorrichtung (70) angeordnet ist.Device (1) according to one of the preceding claims,
characterized,
in that the transverse cutting device (70) is arranged in the region of the inlet (13), in particular downstream of the first roller (31). Vorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Hilfswalze (15) drehbar und/oder verschiebbar am Trichter (12) gelagert ist und/oder dass die Hilfswalze (15) an einem Gehäuseelement (20) drehbar gelagert ist, wobei insbesondere das Gehäuseelement (20) das Schließelement (14) aufweist.Device (1) according to one of the preceding claims,
characterized,
in that the auxiliary roller (15) is rotatably and / or displaceably mounted on the hopper (12) and / or that the auxiliary roller (15) is rotatably mounted on a housing element (20), wherein in particular the housing element (20) has the closing element (14) , Vorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der Einlass (13) des Trichters (12) in Richtung Querschneidevorrichtung (70) einen vergrößerten Bereich (25) aufweist, der frei von der ersten Walze (31) ist, und/oder dass die Abführvorrichtung (10) einen Absaugraum (26) aufweist, in den die Abführkanäle (11) münden.Device (1) according to one of the preceding claims,
characterized,
in that the inlet (13) of the funnel (12) in the direction of the transverse cutting device (70) has an enlarged area (25) which is free of the first roller (31) and / or that the removal device (10) has a suction space (26). has, in the discharge channels (11) open. Vorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Vorzugwalze (16) zumindest teilweise aus dem Trichter (12) sich erstreckt, wobei insbesondere innerhalb des Trichters (12) sich eine Strömung (17) einstellt, die unterhalb der Vorzugwalze (16) strömt, und/oder dass die Vorzugwalze (16) sich durch eine Vielzahl an benachbart zueinander angeordneten Trichtern (12) erstreckt, wobei insbesondere jeder Trichter (12) einen Durchbruch (28) aufweist.Device (1) according to one of the preceding claims,
characterized,
in that the preferred roller (16) at least partially extends out of the funnel (12), whereby a flow (17), which flows below the preferred roller (16), and in particular within the funnel (12), and / or that the preferred roller (16 ) extends through a plurality of adjacently arranged funnels (12), wherein in particular each funnel (12) has an opening (28). Vorrichtung (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der Trichter (12) und/oder die Vorzugwalze (16) derart zur Längsschneidevorrichtung (60) angeordnet sind, dass ab der Längsschneidevorrichtung (60) die Restbahn (4) von der Teilbahn (3) separiert ist.Device (1) according to one of the preceding claims,
characterized,
in that the funnel (12) and / or the preferential roller (16) are arranged in such a way to the longitudinal cutting device (60) that, as of the longitudinal cutting device (60), the residual web (4) is separated from the part web (3). Verfahren, insbesondere zum Betreiben einer Vorrichtung (1) nach einem der Ansprüche 1 bis 10, zum automatischen Schneiden einer Materialbahn (2), mit
einer Abführvorrichtung (10), die an eine erste die Materialbahn (2) transportierende Walze (31) positioniert wird,
einer der ersten Walze (31) vorgelagerten Längsschneidevorrichtung (60), mittels der die Materialbahn (2) in eine Längsrichtung L in mindestens eine Teilbahn (3) und mindestens eine Restbahn (4) durchtrennt wird,
einer nach der Längsschneidevorrichtung (60) nachgelagerten Querschneidevorrichtung (70), die die Restbahn (4) quer zur Längsrichtung L durchtrennt, wobei die Abführvorrichtung (10) Trichter (12) mit jeweils einem zur ersten Walze (31) zugewandten Einlass (13) aufweist, durch den die Restbahn (4) in die Abführvorrichtung (10) gelangt,
der Einlass (13) des Trichters (12) einen vergrößerten Bereich (25) aufweist, der frei von der ersten Walze (31) ist, so dass sich innerhalb des Trichters (12) eine Drucksituation einstellt, wodurch nach einem Quertrennen der Restbahn (4) durch die Querschneidevorrichtung (70) ein automatisches Abführen der Restbahn (4) in die Abführvorrichtung (10) bewirkt wird,
wobei eine Hilfswalze (15) an der ersten Walze (31) anliegt, wenn das Quertrennen erfolgt, um eine Zugunterbrechung in der Materialbahn (2) zu verhindern.Method, in particular for operating a device (1) according to one of claims 1 to 10, for the automatic cutting of a material web (2), with
a removal device (10) which is positioned on a first web (31) conveying the material web (2),
one of the first roller (31) upstream longitudinal cutting device (60), by means of which the material web (2) in a longitudinal direction L in at least one partial web (3) and at least one residual web (4) is severed,
a transverse cutting device (70) downstream of the longitudinal cutting device (60) which cuts through the residual web (4) transversely to the longitudinal direction L, wherein the removal device (10) comprises funnels (12) each having an inlet (13) facing the first roller (31) through which the residual web (4) enters the discharge device (10),
the inlet (13) of the funnel (12) has an enlarged area (25) which is free of the first roller (31) so that a pressure situation is established inside the funnel (12), whereby after a transverse separation of the residual track (4 ) is effected by the cross-cutting device (70) an automatic discharge of the residual web (4) in the discharge device (10),
wherein an auxiliary roller (15) abuts against the first roller (31) when the cross-cutting occurs to prevent a train interruption in the material web (2). Verfahren nach Anspruch 11,
dadurch gekennzeichnet,
dass das Quertrennen der Restbahn (4) zeitversetzt zu einem Längstrennen der Längsschneidevorrichtung (60) erfolgt und/oder dass der Druck (50) innerhalb des Trichters (12) durch ein Schließelement (14) eingestellt wird, das insbesondere zwischen einer Schließstellung (21) und einer Offenstellung (22) bringbar ist, wobei in der Schließstellung (21) eine Öffnung (19) des Trichters (12) geschlossen ist und in der Offenstellung (22) die Öffnung (19) des Trichters (12) geöffnet ist.Method according to claim 11,
characterized,
in that the transverse separation of the residual web (4) takes place with a time lag to a longitudinal cutting of the longitudinal cutting device (60) and / or that the pressure (50) within the funnel (12) is adjusted by a closing element (14), which in particular between a closed position (21) and an open position (22) can be brought, wherein in the closed position (21) an opening (19) of the funnel (12) is closed and in the open position (22), the opening (19) of the funnel (12) is opened. Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass vor dem Quertrennen der Restbahn (4) das Schließelement (14) die Schließstellung (21) einnimmt, insbesondere wenn die Abführvorrichtung (10) zuverlässig die Restbahn (4) abführt, das Schließelement (14) in die Offenstellung (22) verfahren wird.Method according to one of the preceding claims,
characterized,
in that prior to the transverse separation of the residual web (4), the closing element (14) assumes the closed position (21), in particular if the removal device (10) reliably removes the residual web (4), the closing element (14) is moved into the open position (22). Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass innerhalb des Trichters (12) eine Vorzugwalze (16) angeordnet ist, die die Restbahn (4) zuverlässig abführt.Method according to one of the preceding claims,
characterized,
that within the funnel (12) a preferred roller (16) is arranged, which reliably dissipates the residual web (4). Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der Trichter (12) und/oder die Vorzugwalze (16) derart zur Längsschneidevorrichtung (60) angeordnet sind, dass nach dem Quertrennen ab der Längsschneidevorrichtung (60) die Restbahn (4) von der Teilbahn (3) separiert wird, und/oder dass eine Separierung der Restbahn (4) von der Teilbahn (3) weit vor der Querschneidevorrichtung (70) erfolgt, insbesondere die Separierung der Restbahn (4) von der Teilbahn (3) vor der Abführvorrichtung (10) erfolgt.Method according to one of the preceding claims,
characterized,
that the funnel (12) and / or the preferred roller (16) are arranged in such a way to the longitudinal cutting device (60) that after the cross cutting from the longitudinal cutting device (60) the residual web (4) is separated from the part web (3), and / or that a separation of the residual web (4) from the partial web (3) takes place well in front of the cross-cutting device (70), in particular the separation of the residual web (4) from the partial web (3) before the discharge device (10).
EP19157477.1A 2014-02-27 2014-12-17 Device for automatically cutting and removing a web and method for same with an auxiliary roller Active EP3514090B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014102604.7A DE102014102604A1 (en) 2014-02-27 2014-02-27 Device for automatic cutting and removal of a material web and method for this purpose
PCT/EP2014/078291 WO2015128025A1 (en) 2014-02-27 2014-12-17 Apparatus for automatically cutting and discharging a web of material, and associated method
EP14814862.0A EP3083463B1 (en) 2014-02-27 2014-12-17 Apparatus for automatically cutting and discharging a web of material, and associated method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP14814862.0A Division EP3083463B1 (en) 2014-02-27 2014-12-17 Apparatus for automatically cutting and discharging a web of material, and associated method

Publications (2)

Publication Number Publication Date
EP3514090A1 true EP3514090A1 (en) 2019-07-24
EP3514090B1 EP3514090B1 (en) 2021-01-20

Family

ID=52117898

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EP19157477.1A Active EP3514090B1 (en) 2014-02-27 2014-12-17 Device for automatically cutting and removing a web and method for same with an auxiliary roller
EP14814862.0A Active EP3083463B1 (en) 2014-02-27 2014-12-17 Apparatus for automatically cutting and discharging a web of material, and associated method

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Application Number Title Priority Date Filing Date
EP14814862.0A Active EP3083463B1 (en) 2014-02-27 2014-12-17 Apparatus for automatically cutting and discharging a web of material, and associated method

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US (2) US10654676B2 (en)
EP (2) EP3514090B1 (en)
CN (1) CN106029537B (en)
DE (1) DE102014102604A1 (en)
WO (1) WO2015128025A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014102605A1 (en) * 2014-02-27 2015-08-27 Windmöller & Hölscher Kg Suction nozzle for a suction device

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GB2035244A (en) * 1978-10-10 1980-06-18 Beloit Corp Chute asemblies
US4329893A (en) * 1980-06-19 1982-05-18 Beloit Corporation Device and method for handling trim strip in a web slitter
GB2116471A (en) * 1982-03-15 1983-09-28 Bhs Bayerische Berg Apparatus for removing by suction edge strips cut from webs of material more particularly edge strips of a web of corrugated cardboard in a longitudinal slitting and grooving machine
DE102005000190A1 (en) * 2005-12-20 2007-06-21 Voith Patent Gmbh Paper web edge trimmer, with a suction channel to take off the cut edge strips, has a calming roller at the channel entry to guide the strips into the channel
WO2009022053A1 (en) * 2007-08-10 2009-02-19 Metso Paper, Inc. Trim strip slitting and removal arrangement and method of trim strip slitting and removal
DE102007042025A1 (en) * 2007-09-05 2009-03-26 Windmöller & Hölscher Kg Device and method for guiding a material web
DE202011004608U1 (en) 2011-03-30 2012-07-04 Reifenhäuser GmbH & Co. KG Maschinenfabrik Device for edge trimming of a material web
EP2505537A1 (en) * 2011-03-30 2012-10-03 Reifenhäuser GmbH & Co. KG Maschinenfabrik Method and device for cutting the edges of a sheet of material

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US3577844A (en) * 1969-10-21 1971-05-11 Continental Moss Gordin Inc Apparatus for preparing fibrous material for a carding machine
US4484500A (en) * 1982-09-23 1984-11-27 Crown Zellerbach Corporation Web slitting and grooving system
KR100396571B1 (en) * 2002-01-15 2003-09-02 삼성전자주식회사 Sheet curl-reduction apparatus for electro-photographic image-forming device
EP2226144A1 (en) 2009-03-05 2010-09-08 DREISTERN GmbH & Co.KG Device for capturing and removing thin workpiece strips and profiling machine with such a device
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Publication number Priority date Publication date Assignee Title
GB2035244A (en) * 1978-10-10 1980-06-18 Beloit Corp Chute asemblies
US4329893A (en) * 1980-06-19 1982-05-18 Beloit Corporation Device and method for handling trim strip in a web slitter
GB2116471A (en) * 1982-03-15 1983-09-28 Bhs Bayerische Berg Apparatus for removing by suction edge strips cut from webs of material more particularly edge strips of a web of corrugated cardboard in a longitudinal slitting and grooving machine
DE102005000190A1 (en) * 2005-12-20 2007-06-21 Voith Patent Gmbh Paper web edge trimmer, with a suction channel to take off the cut edge strips, has a calming roller at the channel entry to guide the strips into the channel
WO2009022053A1 (en) * 2007-08-10 2009-02-19 Metso Paper, Inc. Trim strip slitting and removal arrangement and method of trim strip slitting and removal
DE102007042025A1 (en) * 2007-09-05 2009-03-26 Windmöller & Hölscher Kg Device and method for guiding a material web
DE202011004608U1 (en) 2011-03-30 2012-07-04 Reifenhäuser GmbH & Co. KG Maschinenfabrik Device for edge trimming of a material web
EP2505537A1 (en) * 2011-03-30 2012-10-03 Reifenhäuser GmbH & Co. KG Maschinenfabrik Method and device for cutting the edges of a sheet of material

Also Published As

Publication number Publication date
US20200115179A1 (en) 2020-04-16
DE102014102604A1 (en) 2015-08-27
EP3083463A1 (en) 2016-10-26
US10654676B2 (en) 2020-05-19
US11292685B2 (en) 2022-04-05
CN106029537B (en) 2018-06-22
EP3083463B1 (en) 2019-02-27
WO2015128025A1 (en) 2015-09-03
CN106029537A (en) 2016-10-12
US20160362271A1 (en) 2016-12-15
EP3514090B1 (en) 2021-01-20

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