EP3415291A1 - Dispositiv d'aspiration pour une unité continue pour des articles en forme de feuille ou bobine, unité de coupe de façon continue, ligne de production - Google Patents

Dispositiv d'aspiration pour une unité continue pour des articles en forme de feuille ou bobine, unité de coupe de façon continue, ligne de production Download PDF

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Publication number
EP3415291A1
EP3415291A1 EP18176571.0A EP18176571A EP3415291A1 EP 3415291 A1 EP3415291 A1 EP 3415291A1 EP 18176571 A EP18176571 A EP 18176571A EP 3415291 A1 EP3415291 A1 EP 3415291A1
Authority
EP
European Patent Office
Prior art keywords
blade
suction
blowing
predetermined
casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18176571.0A
Other languages
German (de)
English (en)
Other versions
EP3415291B1 (fr
Inventor
Maurizio BARBUI
Daniele BARBUI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ace Di Barbui Davide & Figli Srl
Original Assignee
Ace Di Barbui Davide & Figli Srl
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Publication of EP3415291A1 publication Critical patent/EP3415291A1/fr
Application granted granted Critical
Publication of EP3415291B1 publication Critical patent/EP3415291B1/fr
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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
    • B26D7/1854—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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/143—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
    • B26D1/15—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis with vertical cutting member
    • B26D1/151—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis with vertical cutting member for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0068—Trimming and removing web edges

Definitions

  • the present invention relates to a dust suction unit for a continuous cutting unit for a production line of sheet or coil material, for example, for making a continuous longitudinal cut of a sheet of paper or other powdered material wound in a coil.
  • a plurality of such cutting units flanking one another allows a plurality of strips of undefined length and width to be obtained from the aforesaid sheet or coil.
  • a cutting unit In the field of processing materials in a coil, for example cutting of paper, cardboard, plastic film and non-woven material, a cutting unit is used having a disk blade arranged along a cutting plane parallel to an advancing direction of the material coming off the coil.
  • All cutting units generate a fine powder, in the form of dust and fibers, which tends to stick to the material itself in proximity of the cut, to the cutting blade, to the parts of the cutting unit facing the blade itself.
  • the dust, sticking to the blades can create thicknesses, which interfere with the quality of the cut and, in the worst cases, result in the breakage of the material during the cut, which requires a stop in production.
  • the suction stream is unable to remove all of the dust and, above all, it is unable to remove the dust, which remains stuck to the blade and accumulates continuously thereon during processing.
  • suction duct and a blowing duct, both connected to the inner chamber defined by the casing, wherein the suction duct is arranged so as to convey a forced suction stream outside the inner chamber away from the rotary blade along said predetermined suction direction, and wherein the blowing duct is arranged so as to convey a forced blowing stream inside the inner chamber towards the circular rotary blade and according to a predetermined blowing direction, produces considerably forceful turbulent movements about the blade and in proximity of the blade cutting edge.
  • the turbulent stream which is generated into the inner chamber is forceful enough to remove the particles of dust both from the blade and from the walls of the inner chamber and drag them, together with the aforesaid turbulent stream, until they have been completely removed by the suction stream.
  • a further advantage of the present invention comes from the fact that the blowing stream allows the rotary blade to cool during use.
  • a first advantage comes from the fact that the cooling of the blade by the blowing stream offers greater efficiency and cutting precision on sensitive and thin materials, which might not be cut perfectly due to the heat of the blade, or ruined on the surface.
  • a second advantage deriving from the blowing stream on the blade is that of protecting the blade from overheating and reducing wear of the same as a result of the interaction between overheating and accumulations of dust on the blade.
  • a dust suction unit according to the invention is globally indicated with reference 50.
  • a circular rotary blade 51 can be arranged inside the dust suction unit 50 for a production line 100 of material, defining a blade rotation axis 52, a cutting edge 54 of the blade lying on a blade plane L-L orthogonal to the blade rotation axis 52, a radial direction R orthogonal to the rotation axis 52 and parallel to the blade plane L-L, a tangential direction T orthogonal to the radial direction R and parallel to the blade plane L-L.
  • the blade 51 is of a type suitable for cutting paper, for example by rotation of the blade 51 about the blade axis, at the same time advancing the material to be cut along a direction T, with respect to the blade.
  • the present invention is effective with any powdered sheet material, for example non-woven material, tissue, cardboard, etc.
  • the cutting unit according to the invention also allows fine dust, fibers and scraps to be removed from the cutting area.
  • the dust suction unit 50 comprises a casing, 10 comprising an inner casing chamber 11 adapted to accommodate said circular rotary blade 51 allowing the rotation thereof about the blade rotation axis 52, said casing 10 comprising a casing opening 56 adapted to allow a portion of said blade cutting edge 54 to protrude from said casing opening 56 with respect to said casing 10, so as to be able to act on the material in order to cut it.
  • the inner casing chamber 11 has a substantially cylindrical shape and axis coinciding with the blade rotation axis 52.
  • the inner casing chamber 11 is defined by two opposite base walls 12, 13 facing each other, and a side wall 14 joining the base walls 12, 13, having a substantially circular section transversely to the cylindrical chamber axis.
  • the base walls 12, 13 are substantially flat and parallel to each other, preferably substantially circular.
  • the dust suction unit further comprises a suction duct 30 connected to the inner chamber 11, defining a suction duct axis 31' arranged along a predetermined suction direction A with respect to the blade 51, so as to convey a forced suction stream 31 outside the inner chamber 11 away from the circular rotary blade 51 along the aforesaid predetermined suction direction A.
  • the dust suction unit further comprises a blowing duct 40 connected to the inner chamber 11, defining a blowing duct axis 41' arranged along a predetermined blowing direction S, so as to convey a forced blowing stream 41 inside the inner chamber 11 towards the circular rotary blade 51 and in accordance with the predetermined blowing direction S.
  • the blade 51 is rotated according to a predetermined blade rotation direction 57.
  • the casing opening 56 comprises a blade exit end 56' and an opposite blade entry end 56", arranged downstream of the blade entry end 56' along the predetermined blade rotation direction 57.
  • both the suction duct 30 and the blowing duct 40 are connected to the inner chamber 11 in proximity of the aforesaid blade entry end 56".
  • the predetermined suction direction A lies on a suction plane parallel to the blade rotation axis 52
  • the predetermined blowing direction lies on a blowing plane parallel to the blade rotation axis 52, wherein the suction plane and the blowing plane intersect into each other along an intersection line 45 passing through the blade 51, in proximity of the cutting edge 54.
  • intersection line 45 is radially internal with respect to the cutting edge 54.
  • radially internal we mean a position interposed between the cutting edge 54 and the blade rotation axis 52, along a radial direction R of the blade.
  • intersection line 45 is arranged at a predetermined radial distance Dr with respect to the cutting edge 54.
  • the aforesaid predetermined radial distance Dr is comprised between 0 and 1/5 of the radius of the cutting edge 54.
  • the blowing plane S is inclined with respect to the suction plane A according to a predetermined acute inclination angle P.
  • the inclination angle P is from 8° to 80°, more preferably from 10° to 45°, even more preferably of approximately 30°.
  • the blowing plane A is inclined with respect to a work plane PL according to an angle B from 10° to 30°.
  • work plane we mean a plane along which the material to be cut is moved, for example a sheet of undefined length, possibly wound on a coil.
  • the suction plane is arranged at a predetermined suction radial distance RA from the blade rotation axis 52, and the blowing plane is arranged at a predetermined blowing radial distance RS from the blade rotation axis 52.
  • the predetermined blowing radial distance RS is different from the predetermined suction radial distance RA.
  • the predetermined blowing radial distance RS is greater than the predetermined suction radial distance RA.
  • the forced blowing stream is arranged closer to the cutting edge than the forced suction stream.
  • This arrangement is particularly advantageous because the removal action by means of blowing is concentrated in proximity of the cutting edge, while the suction action is more extended to the whole inner casing chamber.
  • the predetermined suction direction A is substantially parallel to the blade plane L-L.
  • the predetermined blowing direction S is substantially parallel to the blade plane L-L.
  • the predetermined suction direction A and the predetermined blowing direction S are substantially parallel to each other and to the blade plane L-L.
  • the blade plane L-L is interposed, or substantially interposed, between the suction duct axis 31' and the blowing duct axis 41'.
  • the forced blowing stream 41 is directed in a direction opposite to the rotation direction 57 of the circular blade 51.
  • the suction stream is directed in a direction coinciding with the rotation direction 57 of the circular blade 51.
  • the forced blowing stream 41 is directed in an direction which is opposite to the direction of the suction stream A.
  • substantially opposite suction and blowing stream directions correspond to the projections, on the blade plane L-L, of the predetermined suction direction A and the predetermined blowing direction S.
  • the suction unit comprises means for varying the aforesaid blowing stream periodically, for example means for producing the aforesaid stream alternately or intermittently.
  • the suction duct 30 is connected to the inner chamber 11 in proximity of the aforesaid blade entry end 56", while the blowing duct 40 is connected to the inner chamber 11 in proximity of the aforesaid blade exit end 56'.
  • the dust suction unit 50 comprises a ionizer device 44 associated with said blowing duct 40, arranged along said forced blowing stream 41 in input to said inner chamber 11.
  • the ionizer device 44 is directly mounted onto said casing 10.
  • the dust suction unit 50 comprises a further blowing duct 42 connected to said casing 10 and leading into said inner chamber 11, so as to convey a further forced blowing stream in input to said inner chamber 11, said further blowing duct 42 being connected to the casing 10 on the opposite side with respect to said suction duct 30.
  • the dust suction unit 50 comprises a further ionizer device 46 associated with said further blowing duct 42, arranged along said further forced blowing stream.
  • the ionizer device comprises a high-voltage electrode configured to ionize the blowing stream upstream of the inner chamber 11.
  • the blowing stream in particular, the air going in, is ionized so as to attract and separate the particles of dust from the blade and drag them outside the inner chamber 11 by means of the suction duct. It has been found that in this way, the removal of dust from the inner chamber is further optimized.
  • the blowing duct 40 comprises a distribution canalization for the blowing stream having a plurality of exits, which lead into the inner chamber 11.
  • the further blowing duct 42 comprises a distribution canalization 47 having a plurality of exits 48 inside the inner casing chamber 11.
  • said plurality of exits 48 comprises at least one exit orthogonal to the blade rotation axis 52.
  • said casing 10 is formed by only one casing wall substantially orthogonal to the blade axis 52 and is configured to be associated with a blade-carrying device 100 to form said inner casing chamber 11.
  • the casing 10 can be adapted to a blade-carrying device 100 to form the inner chamber 11, together with the blade-carrying device.
  • a cutting unit comprising a dust suction unit, as described above, and the aforesaid circular rotary blade 51 defining a blade rotation axis 52, a blade cutting edge 54 lying on a blade plane L-L orthogonal to the blade rotation axis 52, a radial direction R orthogonal to the rotation axis 52 and parallel to the blade plane L-L, a tangential direction T orthogonal to the radial direction (R) and parallel to the blade plane L-L.
  • the inner casing chamber 11 is configured to allow the rotation of the circular rotary blade 51 about the blade rotation axis 52, and the casing opening 56 is adapted to allow a portion of said blade cutting edge 54 to protrude from said casing opening 56 with respect to the casing 10.
  • the suction duct axis 31' is arranged so as to convey a forced suction stream 31 in exit from said inner chamber 11 away from said blade 51 along said predetermined suction direction A, and wherein the blowing duct axis 41' is arranged so as to convey a forced blowing stream 41 in input to said inner chamber 11 towards said blade 51 along said predetermined blowing direction S.
  • a continuous cutting unit 50 for a production line 100 for producing sheet or coil material comprising;
  • a production line 100 comprising a plurality of cutting units as described above, wherein the cutting units of said plurality flank one another so that the blade planes of each cutting unit of the plurality are parallel to one another.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
EP18176571.0A 2017-06-12 2018-06-07 Dispositiv d'aspiration pour une unité continue pour des articles en forme de feuille ou bobine, unité de coupe de façon continue, ligne de production Active EP3415291B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000064754A IT201700064754A1 (it) 2017-06-12 2017-06-12 Gruppo di aspirazione polvere per gruppo di taglio continuo di materiale in foglio o bobina, gruppo di taglio continuo, linea di produzione

Publications (2)

Publication Number Publication Date
EP3415291A1 true EP3415291A1 (fr) 2018-12-19
EP3415291B1 EP3415291B1 (fr) 2020-01-22

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EP18176571.0A Active EP3415291B1 (fr) 2017-06-12 2018-06-07 Dispositiv d'aspiration pour une unité continue pour des articles en forme de feuille ou bobine, unité de coupe de façon continue, ligne de production

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EP (1) EP3415291B1 (fr)
IT (1) IT201700064754A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110509326A (zh) * 2019-08-16 2019-11-29 谢金枝 一种导电布分切机的切割轮降温除尘装置
IT202100006773A1 (it) * 2021-03-22 2022-09-22 Ace Di Barbui Davide & Figli Srl Dispositivo antistatico per una testata di depolverazione per una linea di trasformazione di materiale in nastro e testata di depolverazione avente detto dispositivo antistatico
DE102021110512A1 (de) 2021-04-23 2022-10-27 Gema Switzerland Gmbh Schnittstaub-absaugsystem mit einer absaughaube, absaughaube für ein schnittstaub-absaugsystem sowie messerhalter mit einem schnittstaub-absaugsystem

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1547050A (en) * 1923-01-29 1925-07-21 Hobbs Mfg Company Waste remover for cutting machines
GB391708A (en) * 1932-11-02 1933-05-04 David Carlaw & Sons Ltd Improvements relating to paper-cutting machines
US3135151A (en) * 1961-03-06 1964-06-02 Kimberly Clark Co Paper slitter with dust removal vacuum device
DE3906376A1 (de) * 1989-03-01 1990-09-06 Will E C H Gmbh & Co Vorrichtung zum laengsschneiden laufender materialbahnen
DE4425666A1 (de) * 1994-07-20 1996-01-25 Roland Man Druckmasch Vorrichtung zum Längsschneiden von Bahnen
WO2002066212A1 (fr) * 2001-02-21 2002-08-29 Koenig & Bauer Aktiengesellschaft Dispositif de nettoyage pour dispositif de coupe longitudinale, et procede de nettoyage de ce dispositif de coupe longitudinale

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1547050A (en) * 1923-01-29 1925-07-21 Hobbs Mfg Company Waste remover for cutting machines
GB391708A (en) * 1932-11-02 1933-05-04 David Carlaw & Sons Ltd Improvements relating to paper-cutting machines
US3135151A (en) * 1961-03-06 1964-06-02 Kimberly Clark Co Paper slitter with dust removal vacuum device
DE3906376A1 (de) * 1989-03-01 1990-09-06 Will E C H Gmbh & Co Vorrichtung zum laengsschneiden laufender materialbahnen
DE4425666A1 (de) * 1994-07-20 1996-01-25 Roland Man Druckmasch Vorrichtung zum Längsschneiden von Bahnen
WO2002066212A1 (fr) * 2001-02-21 2002-08-29 Koenig & Bauer Aktiengesellschaft Dispositif de nettoyage pour dispositif de coupe longitudinale, et procede de nettoyage de ce dispositif de coupe longitudinale

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110509326A (zh) * 2019-08-16 2019-11-29 谢金枝 一种导电布分切机的切割轮降温除尘装置
CN110509326B (zh) * 2019-08-16 2021-05-28 邢台朝阳机械制造有限公司 一种导电布分切机的切割轮降温除尘装置
IT202100006773A1 (it) * 2021-03-22 2022-09-22 Ace Di Barbui Davide & Figli Srl Dispositivo antistatico per una testata di depolverazione per una linea di trasformazione di materiale in nastro e testata di depolverazione avente detto dispositivo antistatico
EP4063120A1 (fr) * 2021-03-22 2022-09-28 Ace Di Barbui Davide & Figli S.R.L. Dispositif antistatique pour une tête de dépoussierage pour une ligne de transformation d'une bande de matériau et tête de dépoussierage comportant ledit dispositif antistatique
DE102021110512A1 (de) 2021-04-23 2022-10-27 Gema Switzerland Gmbh Schnittstaub-absaugsystem mit einer absaughaube, absaughaube für ein schnittstaub-absaugsystem sowie messerhalter mit einem schnittstaub-absaugsystem

Also Published As

Publication number Publication date
EP3415291B1 (fr) 2020-01-22
IT201700064754A1 (it) 2018-12-12

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