EP3802027A1 - Longitudinal cutting device for cutting a traveling material web - Google Patents
Longitudinal cutting device for cutting a traveling material webInfo
- Publication number
- EP3802027A1 EP3802027A1 EP19728606.5A EP19728606A EP3802027A1 EP 3802027 A1 EP3802027 A1 EP 3802027A1 EP 19728606 A EP19728606 A EP 19728606A EP 3802027 A1 EP3802027 A1 EP 3802027A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- web
- cutting device
- longitudinal cutting
- sealing strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 230000008878 coupling Effects 0.000 claims abstract description 29
- 238000010168 coupling process Methods 0.000 claims abstract description 29
- 238000005859 coupling reaction Methods 0.000 claims abstract description 29
- 239000000428 dust Substances 0.000 claims abstract description 13
- 238000007598 dipping method Methods 0.000 claims description 3
- 239000011111 cardboard Substances 0.000 abstract description 3
- 239000011087 paperboard Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
Definitions
- the invention relates to a longitudinal cutting device for cutting a moving material web, in particular a paper or board web, with a plurality of rotatable and thereby cutting in the web direction circular knives, which are each mounted on a slide on a transversely extending to the web running knife traversing adjustable.
- the invention will be described below generally with reference to a material web. However, it is also applicable to other webs, such as sheets of paper, cardboard, plastic or metal foil, accordingly.
- Such a longitudinal cutting device is known for example from German Utility Model DE 298 12 753 U1.
- Slitting devices are usually components of winding or cross-cutting machines that produce individual narrower bobbins from a wide and running material web or by additional cross cutting individual sheets.
- the circular knives can be positioned transversely to the running direction of the moving material web.
- the circular blades each consist of a current material web during cutting supported pot knife and a in the running material web dipping point knife whose cutting edges must be positioned exactly to each other in the desired cutting position.
- cutting dust Especially with fibrous material webs occurs when cutting so-called cutting dust, which is undesirable for the following process steps. It is also important to minimize the health hazards caused by the dust as well as the risk of a dust explosion.
- the invention is therefore based on the object in a longitudinal cutting device to improve the removal of the cutting dust.
- This object is achieved in that transversely to the web running direction over a plurality of circular blades, one with a
- Vacuum source connected suction collecting tube extending, which has a transverse to the web running direction across these circular knife away suction slot, these circular knives each one, the cutting dust receiving intake manifold is assigned, these suction pipes each have a, mounted in the suction coupling element with the suction manifold in connections and the Suction slot between the coupling elements is sealed by a sealing tape.
- the cutting dust can be easily and safely removed via the suction collecting tube. This can be further supported by the fact that the opening of the suction tubes is shaped so that the impulse of the cutting dust is used for the recording.
- the suction manifold and the suction slot should extend at least over all located in the railway area circular blade.
- the sealing strip extends over the entire length of the suction slot.
- the sealing strip should be flexible transversely to the web running direction. This flexibility makes it much easier to carry away the sealing tape over the respective coupling element of the suction pipes.
- the sealing strip in the web running direction is much less flexible than transverse to the web running direction.
- the suction can also be prevented by the fact that in the suction slot, a support grid supporting the sealing tape is located.
- the coupling elements should be sealed by a seal, preferably a brush seal against the suction slot.
- a seal preferably a brush seal against the suction slot.
- the sealing tape should be pressed before and / or after a coupling element via a pressure medium, preferably a rotatable pinch roller to the suction slot.
- the sealing effect of the sealing strip can be further improved by tightening the sealing strip over a tensioning device and / or the sealing strip is guided laterally in the suction slot.
- Flierzu sealing elements should be present for closing the coupling elements of the suction pipes not required in Saugsammelrohr outside the material web area.
- the longitudinal cutting device according to the invention is arranged only on one side and because of the difficult removal preferably above the material web.
- the longitudinal cutting device is arranged on both sides of the material web. Particularly advantageous is the use of the longitudinal cutting device, if this has a plurality of pairs of circular knives, each comprising a current material web during cutting ab mandes circular blade and a dipping into the moving material web circular knife.
- FIG. 1 shows a schematic side view of a longitudinal cutting device
- Figure 2 is a schematic plan view of the longitudinal cutting device
- FIG. 3 shows an enlarged detail of FIG. 1
- FIG. 5 shows a partial longitudinal section through a suction manifold 6.
- Figures 1 and 2 show a schematic view of a possible embodiment of a longitudinal cutting device according to the invention for cutting a moving material web 1.
- This material web 1 may be a web of paper, cardboard, plastic film, metal foil or the like.
- the illustrated longitudinal cutting device can be used in particular in a known slitter-winder with at least one longitudinal cutting device for cutting a moving material web.
- such a longitudinal cutting device is a component of a winding or cross-cutting machine which produces individual narrower winding rolls from a wide and moving material web or individual sheets by additional transverse cutting.
- a longitudinal cutting device can be installed in a roll cutting machine.
- the illustrated longitudinal cutting device for cutting the moving material web 1 comprises a pair of circular knives which sever the running material web 1 for division into individual webs in the longitudinal direction.
- Circular knife pair consists of one, the current material web 1 when cutting supporting, lower circular blade 4 and a submerged in the moving material web 1, upper circular blade 3.
- lower circular blade 4 pot knife and the upper circular blade 3 disc-shaped tip knife used as in example German Patent DE 34 19 843 C2 are described.
- the longitudinal cutting device can also have only one circular blade 3 for cutting the moving material web 1.
- Each circular blade 3, 4 is rotatably fastened to a supporting carriage 5, which is mounted so as to be displaceable in each case on a blade cross member extending transversely to the web running direction 2 of the moving material web 1, not shown here.
- the adjustable mounting of the carriages 5 ensures that each circular blade 3, 4 can be positioned transversely to the web running direction 2 of the material web 1 to be divided in order to set the required format width.
- each upper circular blade 3 is adjustable in the direction of its axis of rotation against the associated lower circular blade 4, so that the two cutting edges can be aligned exactly relative to each other.
- a suction pipe 8 connected laterally to each upper circular blade 3 is arranged laterally adjacent to each upper circular blade 3.
- the suction opening 14 of the suction pipe 8 is arranged such that the impulse of the cutting dust when cutting the
- suction tubes 8 The connection of the suction tubes 8 with a vacuum source via a transversely to the web running direction 2 here across all circular blades 3,4 away extending suction manifold 6, which is connected to this vacuum source.
- suction collecting tubes 6 can also be arranged next to one another transversely to the direction of web travel 2, which are each assigned to one, but preferably to a plurality of suction tubes 8.
- the suction collecting pipe 6 has one, transverse to the web running direction 2 via the connected, i. here suction tubes 8 extending away suction slot. 7
- connection of the suction collecting pipe 6 with the connected intake pipes 8 takes place in each case via a coupling element 10 of the respective intake pipe 8 mounted so as to be displaceable transversely to the web running direction 2 in the suction slot 7.
- a coupling element 10 of the respective intake pipe 8 mounted so as to be displaceable transversely to the web running direction 2 in the suction slot 7.
- an airtight sealing tape 9 which extends over the entire length of the suction slot 7.
- sealing strip 9 is flexible transversely to the web running direction 2 and can thus be applied to the coupling element 10.
- sealing tape 9 is pressed before and after each coupling element 10 via a rotatable pressure roller 12 to the suction slot 7 out.
- sealing strip 9 is substantially stiffer than running in the web running direction 2 transverse to the web running direction 2.
- the sealing strip 9 is tensioned to ensure a sufficient and secure sealing effect via a clamping device 13 arranged laterally of the machine.
- upper circular blades 3 are not required for cutting, then they can be moved together with the corresponding suction tube 8 side of the web 1 in an inactive parking position.
- these inactive coupling elements 10 are each closed by a sealing element from the suction manifold 6 from.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Cutting Devices (AREA)
- Making Paper Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018113558.0A DE102018113558A1 (en) | 2018-06-07 | 2018-06-07 | Longitudinal cutting device for cutting a running material web |
PCT/EP2019/063711 WO2019233808A1 (en) | 2018-06-07 | 2019-05-28 | Longitudinal cutting device for cutting a traveling material web |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3802027A1 true EP3802027A1 (en) | 2021-04-14 |
EP3802027B1 EP3802027B1 (en) | 2024-07-10 |
Family
ID=66770434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19728606.5A Active EP3802027B1 (en) | 2018-06-07 | 2019-05-28 | Web slitter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3802027B1 (en) |
DE (1) | DE102018113558A1 (en) |
WO (1) | WO2019233808A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021119691A1 (en) * | 2021-07-29 | 2023-02-02 | Voith Patent Gmbh | Dust extraction on the roll cutter |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2063757A1 (en) * | 1970-12-24 | 1972-06-29 | Hennecke Gmbh Maschf | Cross cutter - for polyurethane foam panels with a scraper to clear the chip tray |
DE3419843C2 (en) | 1984-05-26 | 1986-04-03 | Jagenberg AG, 4000 Düsseldorf | Longitudinal cutting device for web material, in particular paper and cardboard webs |
US5031494A (en) * | 1990-01-10 | 1991-07-16 | Kampf Gmbh & Co. Maschinenfabrik | Web processing machine having at least one web and roll and a slitter for said web |
DE4425666C2 (en) * | 1994-07-20 | 1997-04-17 | Roland Man Druckmasch | Device for slitting webs |
IT1292415B1 (en) * | 1997-06-25 | 1999-02-08 | Fabio Eugenio Malnati | DEDUSTING DEVICE PARTICULARLY SUITABLE FOR THE ELIMINATION OF DUSTY RESIDUES PRODUCED DURING CUTTING |
DE19810939A1 (en) | 1998-03-13 | 1999-09-16 | Jagenberg Papiertech Gmbh | Longitudinal cutting device for moving material webs of paper or cardboard |
DE10106672B4 (en) * | 2001-02-14 | 2004-03-18 | Koenig & Bauer Ag | Slitter |
NZ594980A (en) * | 2011-09-02 | 2014-02-28 | Eigen Systems Ltd | Cutting machine waste extraction apparatus |
DE102012108196A1 (en) * | 2012-09-04 | 2014-03-06 | Windmöller & Hölscher Kg | Device for extracting waste products of a production machine |
-
2018
- 2018-06-07 DE DE102018113558.0A patent/DE102018113558A1/en active Pending
-
2019
- 2019-05-28 EP EP19728606.5A patent/EP3802027B1/en active Active
- 2019-05-28 WO PCT/EP2019/063711 patent/WO2019233808A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE102018113558A1 (en) | 2019-12-12 |
EP3802027B1 (en) | 2024-07-10 |
WO2019233808A1 (en) | 2019-12-12 |
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