EP3083463B1 - Apparatus for automatically cutting and discharging a web of material, and associated method - Google Patents
Apparatus for automatically cutting and discharging a web of material, and associated method Download PDFInfo
- Publication number
- EP3083463B1 EP3083463B1 EP14814862.0A EP14814862A EP3083463B1 EP 3083463 B1 EP3083463 B1 EP 3083463B1 EP 14814862 A EP14814862 A EP 14814862A EP 3083463 B1 EP3083463 B1 EP 3083463B1
- 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.)
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Links
- 238000005520 cutting process Methods 0.000 title claims description 114
- 239000000463 material Substances 0.000 title claims description 52
- 238000000034 method Methods 0.000 title claims description 19
- 238000007599 discharging Methods 0.000 title claims description 5
- 238000000926 separation method Methods 0.000 claims description 25
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims 1
- 239000003570 air Substances 0.000 description 28
- 230000008901 benefit Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 238000009966 trimming Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009056 active transport Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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 region of the edge strip, jams there and is forcibly fed to the removal 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 DE 10 2005 000 190 A1 discloses a device for cutting a material web with a longitudinal cutting device and a discharge device for discharging an edge strip of the material web.
- the DE 10 2007 042 025 A1 discloses another device for cutting a web of material.
- 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 produce a desired negative pressure leaves 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 has at least one funnel, which is formed with an inlet in order to remove 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 one Axis, wherein the geometry of the funnel is designed in the region of the inlet of a circular 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 provides that within the funnel a preferred roller is arranged to dissipate 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.
- 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.
- 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 the extent to which a transverse separation has already occurred, or the residual web is already reliably located in the discharge device, etc.
- the drive may be a pneumatic drive.
- the closing element can have a separate drive, wherein here too a pneumatic drive is conceivable.
- 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, a processing or To enable recycling of the residual web and / or to enable a targeted disposal of the residual web.
- the preferred roller extends at least partially out of the funnel, wherein within the funnel a flow is established which flows below the preferred roller.
- the funnel housing may be formed such that at least partially the preferred roller extends from the funnel.
- 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.
- 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. Likewise, the invention comprises that the removal device, including the cross-cutting device, is displaceable from a remote position to the material web, which corresponds, for example, to a continuous operating position, into a closer position to the material web, which represents the cutting position in which the cross-cutting device cuts through the residual web.
- 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.
- the longitudinal section through to make a jet of a medium like water.
- a welding agent such as a laser, comes as a cutting tool in question.
- these cutting means have the advantage not to wear.
- they have the disadvantage of high media or energy consumption.
- 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 16. 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 take the closed position, in particular when the discharge device reliably dissipates the residual web, the closing element is moved into 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 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 clockwise and causes an improved removal of the residual web 4 in the direction of the discharge channel 11, in particular in the direction of the suction chamber 26 a first air flow 17, which flows below the preferred roller 16, and a second air flow 18, which flows above the preferred roller 16.
- 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 a large air flow 5 can penetrate from inside into the funnel housing 27, which at the same time can push the transverse separated web 4 into the funnel 12.
- 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 a 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 compensation air flow can cause these to flow into the second Air flow 18 passes, or improved flow effects within the funnel 12 triggers.
- 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 discharge channels 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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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
Die
Die
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 oder 3 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.The object of the present invention is achieved by all features of
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
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 produce a desired negative pressure leaves 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.
Erfindungsgemäß weist die Abführvorrichtung mindestens einen Trichter auf, 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.According to the invention, the discharge device has at least one funnel, which is formed with an inlet in order to remove 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.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 one Axis, wherein the geometry of the funnel is designed in the region of the inlet of a circular 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.
Zudem sieht die Erfindung vor, 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, the invention provides that within the funnel a preferred roller is arranged to dissipate 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 the extent to which 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 offset the auxiliary roll in its respective position in particular, the drive may be a pneumatic drive. Alternatively and / or additionally, the closing element can have a separate drive, wherein here too a pneumatic drive is conceivable.
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, a processing or To enable recycling of the residual web and / or to enable a targeted disposal of the residual web.
Bei einem weiteren Erfindungsgedanken erstreckt sich die Vorzugwalze zumindest teilweise aus dem Trichter wobei sich 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 inventive idea, the preferred roller extends at least partially out of the funnel, wherein within the funnel a flow is established which flows below the preferred 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. Likewise, the invention comprises that the removal device, including the cross-cutting device, is displaceable from a remote position to the material web, which corresponds, for example, to a continuous operating position, into 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. 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.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. 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 the longitudinal section through to make a jet of a medium like 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 16 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
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, before the cross-cutting of the residual web, the closing element take the closed position, in particular when the discharge device reliably dissipates the residual web, the closing element is moved into 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 nicht erfindungsgemäße Ausführungsform der Vorrichtung gemäß
Fig. 1 .
- 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 non-inventive embodiment of the device according to
Fig. 1 ,
In
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
Beispielsweise kann die Längsschneidevorrichtung 60 Messerelemente aufweisen, um die soeben beschriebene Längstrennung an der Materialbahn 2 zu bewirken.For example, the
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
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
Die Abführvorrichtung 10 weist gemäß
Gemäß
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
In einer möglichen Ausführungsform der Erfindung, die schematisch in
Zudem kann gemäß
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
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
Das Ausführungsbeispiel gemäß
Das Ausführungsbeispiel gemäß
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
Gemäß
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
- 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 (23)
- A device (1) for automatically cutting a web of material (2), having a longitudinal cutting device (60), by means of which the web of material (2) can be separated into at least one partial web (3) and into at least one residual web (4) in a longitudinal direction (L), a discharge device (10) for automatically discharging the obtained residual web (4), a transverse cutting device (70), which is downstream of the longitudinal cutting device (60) and is used for separating the residual web (4) transversely to the longitudinal direction (L), wherein the discharge device (10) has at least one funnel (12), which is formed with an inlet (13), in order to discharge the residual web (4),
characterized in
that within the funnel (12) an advancing roller (16) is arranged, in order to discharge the residual web (4) in an improved manner. - A device (1) according to Claim 1,
characterized in
that the advancing roller (16) is rotatably arranged within the funnel (12) in such a manner that a first air flow (17) is formed, which flows underneath the advancing roller (16), and a second air flow (18) is formed, which flows above the advancing roller (16). - A device (1) for automatically cutting a web of material (2), having a longitudinal cutting device (60), by means of which the web of material (2) can be separated into at least one partial web (3) and into at least one residual web (4) in a longitudinal direction (L), a discharge device (10) for automatically discharging the obtained residual web (4), a transverse cutting device (70), which is downstream of the longitudinal cutting device (60) and is used for separating the residual web (4) transversely to the longitudinal direction (L), wherein the discharge device (10) has at least one funnel (12), which is formed with an inlet (13), in order to discharge the residual web (4),
characterized in,
that the advancing roller (16) extends partially out of the funnel (12), wherein within the funnel (12) a flow (17) is established, which flows underneath the advancing roller (16). - A device (1) according to any one of the preceding claims,
characterized in,
that a separation of the residual web (4) from the partial web (3) takes place far before the transverse cutting device (70). - A device (1) according to any one of the preceding claims,
characterized in,
that the discharge device (10) has a plurality of discharge channels (11), in order to siphon off a plurality of residual webs (4), in particular, that the discharge channels (11) can be varied in their position relative to the web of material (2). - A device (1) according to any one of the preceding claims,
characterized in
that the discharge device (10) can be positioned on a first roller (31), which provides for a transport of a web of material (2), wherein in particular the geometry of the funnel (12) in the region of the inlet (13) is adapted at least partially to the geometry of the first roller (31). - A device (1) according to any one of the preceding claims,
characterized in
that at least one closing element (14) is provided, which can be moved 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. - A device (1) according to Claim 6 or 7,
characterized in
that in the region of the inlet (13), the transverse cutting device (70) is arranged downstream of the first roller (31). - A device (1) according to Claim 6, 7 or 8,
characterized in
that the discharge device (10) has at least one auxiliary roller (15), which can be moved between two positions (23, 24), wherein in the first position (23) the auxiliary roller (15) acts on the first roller (31) and in the second position (24) the auxiliary roller (15) is spaced apart from the first roller (31). - A device (1) according to Claim 9,
characterized in,
that the auxiliary roller (15) is mounted rotatably and/or displaceably on the funnel (12). - A device (1) according to Claim 9 or 10,
characterized in
that the auxiliary roller (15) is mounted rotatably on a housing element (20), wherein in particular the housing element (20) has a closing element (14). - A device (1) according to any one of the preceding Claims 6 to 11,
characterized in
that the inlet (13) of the funnel (12) in the direction of the transverse cutting device (70) has an enlarged region (25), which is free from the first roller (31). - A device (1) according to any one of the preceding claims,
characterized in
that the discharge device (10) has a suction chamber (26), into which the discharge channels (11) open. - A device (1) according to any one of the preceding claims,
characterized in,
that the advancing roller (16) extends through a plurality of funnels (12) arranged adjacent to one another, wherein in particular each funnel (12) has an aperture (28). - A device (1) according to any one of the preceding claims,
characterized in
that the funnel (12) and/or the advancing roller (16) is arranged relative to the longitudinal cutting device (60) in such a manner that, as of the longitudinal cutting device (60), the residual web (4) is separated from the partial web (3). - A method for operating a device (1) according to any one of Claims 1 to 15, for automatically cutting a web of material (2), having a discharge device (10), which is positioned on a first roller (31) transporting the web of material (2),
a longitudinal cutting device (60) upstream of the first roller (31), by means of which the web of material (2) is separated in a longitudinal direction (L) into at least one partial web (3) and at least one residual web (4),
a transverse cutting device (70) downstream from the longitudinal cutting device (60), which transverse cutting device separates the residual web (4) transversely to the longitudinal direction (L), wherein the discharge device (10) has funnels (12) with in each case one 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 region (25), which is free from the first roller (31), so that within the funnel (12) a pressure situation is established, whereby after a transverse separation of the residual web (4) by the transverse cutting device (70) an automatic discharging of the residual web (4) into the discharge device (10) is performed. - A method according to Claim 16,
characterized in
that the transverse separation of the residual web (4) takes place delayed in time relative to a longitudinal separation of the longitudinal cutting device (60). - A method according to Claim 16 or 17,
characterized in,
that the pressure (50) within the funnel (12) is established by a closing element (14), which in particular can be moved 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. - A method according to Claim 16, 17 or 18,
characterized in,
that before the transverse separation of the residual web (4) the closing element (14) assumes the closed position (21), in particular, if the discharge device (10) reliably discharges the residual web (4), the closing element (14) is moved into the open position (22). - A method according to Claim 16, 17, 18 or 19,
characterized in
that an auxiliary roller (15) abuts against the first roller (31), if the transverse separation takes place, in order to prevent a course interruption in the web of material (2). - A method according to Claim 16, 17, 18, 19, or 20,
characterized in,
that within the funnel (12) an advancing roller (16) is arranged, which reliably discharges the residual web (4). - A method according to Claim 16, 17, 18, 19, 20 or 21 ,
characterized in,
that the funnel (12) and/or the advancing roller (16) is arranged relative to the longitudinal cutting device (60) in such a manner that after the transverse separation, as of the longitudinal cutting device (60), the residual web (4) is separated from the partial web (3). - A method according to Claim 16, 17, 18, 19, 20, 21 or 22,
characterized in,
that the separation of the residual web (4) from the partial web (3) takes place far before the transverse cutting device (70), in particular, the separation of the residual web (4) from the partial web (3) takes place before the discharge device (10).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP19157477.1A EP3514090B1 (en) | 2014-02-27 | 2014-12-17 | Device for automatically cutting and removing a web and method for same with an auxiliary roller |
Applications Claiming Priority (2)
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 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19157477.1A Division EP3514090B1 (en) | 2014-02-27 | 2014-12-17 | Device for automatically cutting and removing a web and method for same with an auxiliary roller |
EP18193101.5 Division-Into | 2018-09-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3083463A1 EP3083463A1 (en) | 2016-10-26 |
EP3083463B1 true EP3083463B1 (en) | 2019-02-27 |
Family
ID=52117898
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (5)
Country | Link |
---|---|
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)
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 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3577844A (en) * | 1969-10-21 | 1971-05-11 | Continental Moss Gordin Inc | Apparatus for preparing fibrous material for a carding machine |
US4231272A (en) * | 1978-10-10 | 1980-11-04 | Beloit Corporation | Trim chute and method |
US4329893A (en) * | 1980-06-19 | 1982-05-18 | Beloit Corporation | Device and method for handling trim strip in a web slitter |
DE8207236U1 (en) * | 1982-03-15 | 1982-07-22 | BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München | DEVICE FOR SUCTIONING THE EDGE STRIPS CUT OFF FROM MATERIAL SHEETS, ESPECIALLY THE EDGE STRIPS OF A CARDBOARD CUT OUT BY LANDING AND CUTTING MACHINES |
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 |
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 |
FI124385B (en) * | 2007-08-10 | 2014-08-15 | Valmet Technologies Inc | Edge cutting and removal arrangement |
DE102007042025B4 (en) * | 2007-09-05 | 2018-12-20 | Windmöller & Hölscher Kg | Device and method for guiding a material web |
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 |
DE102011015544A1 (en) * | 2011-03-30 | 2012-10-04 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Device and method for marginal trimming a material web |
DE202011004608U1 (en) | 2011-03-30 | 2012-07-04 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Device for edge trimming of a material web |
US9352526B2 (en) * | 2011-11-10 | 2016-05-31 | Packsize Llc | Elevated converting machine with outfeed guide |
-
2014
- 2014-02-27 DE DE102014102604.7A patent/DE102014102604A1/en not_active Withdrawn
- 2014-12-17 EP EP19157477.1A patent/EP3514090B1/en active Active
- 2014-12-17 WO PCT/EP2014/078291 patent/WO2015128025A1/en active Application Filing
- 2014-12-17 EP EP14814862.0A patent/EP3083463B1/en active Active
- 2014-12-17 CN CN201480075583.2A patent/CN106029537B/en active Active
- 2014-12-17 US US15/121,627 patent/US10654676B2/en active Active
-
2019
- 2019-12-10 US US16/708,979 patent/US11292685B2/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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US20160362271A1 (en) | 2016-12-15 |
US11292685B2 (en) | 2022-04-05 |
US20200115179A1 (en) | 2020-04-16 |
DE102014102604A1 (en) | 2015-08-27 |
CN106029537A (en) | 2016-10-12 |
US10654676B2 (en) | 2020-05-19 |
CN106029537B (en) | 2018-06-22 |
WO2015128025A1 (en) | 2015-09-03 |
EP3083463A1 (en) | 2016-10-26 |
EP3514090B1 (en) | 2021-01-20 |
EP3514090A1 (en) | 2019-07-24 |
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