EP0887160A2 - Exhaustion device for the removal of the dust produced by cutting paperboard, paper and the like - Google Patents
Exhaustion device for the removal of the dust produced by cutting paperboard, paper and the like Download PDFInfo
- Publication number
- EP0887160A2 EP0887160A2 EP98111496A EP98111496A EP0887160A2 EP 0887160 A2 EP0887160 A2 EP 0887160A2 EP 98111496 A EP98111496 A EP 98111496A EP 98111496 A EP98111496 A EP 98111496A EP 0887160 A2 EP0887160 A2 EP 0887160A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- suction
- suction duct
- blade
- discoid
- 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.)
- Withdrawn
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 89
- 239000000428 dust Substances 0.000 title claims abstract description 21
- 239000011087 paperboard Substances 0.000 title claims abstract description 20
- 239000000123 paper Substances 0.000 title claims description 5
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- -1 bristol board Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
Definitions
- the present invention relates to a suction dust exhaustion device particularly suitable for the continuous removal of dusty residues and foreign bodies produced during the longitudinal cutting of paperboard and paper sheets and the like on the conventional discoid blade cutting machines.
- cutting in parallel strips big-sized paperboard, bristol board and the like is at present carried out on longitudinal cutting machines having horizontal axis discoid blades, acting on counter-blades that are also discoid and motor-driven; generally, said machines have several cutting blades parallel with each other and whose mutual distance and height is adjustable with respect to the corresponding discoid counter-blades, in order to carry out at once several longitudinal cuttings on paperboard sheets of various thickness.
- each group comprising a discoid cutting blade, the associated motor-driven counter-blade and the kinematic gears for the transmission of motion and the adjustment of both blades, constitutes a cutting unit which, during the cutting stage, unavoidably produces dusty residues or the detachment of products that are possibly present on the faces of the paperboard sheet, which are at present usually removed by suction carried out in the inside of hoods located at the sides of the cutting disk, i.e. in correspondence of the cutting zone; besides, to ensure a correct suction of the dusty residues, said suction hoods are so sized as to concern a wide area both before and behind the actual cutting zone.
- these suction hoods of the known art require therefore a strong suction current in order to remove the dusty residues and to convey them, as they are noxious, outside the work environment; on the other hand, as said dusty residues form only downstream of the cutting zone and not upstream of the same, the presence of the hood upstream of the cutting zone involves a suction that is actually useless; i.e. it involves a consumption of suction air which does not concern the zone where dusty residues form; besides, the suction hoods of the known art have also the drawback of uselessly exhausting also room air, because of the high volume of suction air applied to the same.
- object of the invention is to provide a dust exhaust device of the suction type, to exhaust the dusty residues produced by the rectilinear cutting of paperboard sheets and the like, so designed and structured as to eliminate the drawbacks and the limitations of the suction hoods of the known art that are provided on the machines having discoid cutting blades, and above all as to be able carry out a correct and complete suction of said residues with a highly reduced volume of suction air with respect to that required by the present systems.
- Another object of the invention is to provide a dust exhaust device of the aforesaid type, so structured as to allow suction both above and under the zone downstream of the actual cutting zone, with extremely reduced overall dimensions, and therefore with the advantage of being of easily applicable on the present machines with discoid cutting blades, without requiring particular changes in the same machines.
- a further object of the invention is to provide a dust exhaust device equipped with means suitable to allow the air exhausted from the cutting zone, i.e. an air that is purified from the dust produced by cuttings, to be let directly in the work environment.
- a device for the dust exhaustion of the air exhausted from the cutting zones of machines intended for the rectilinear cutting of paperboard, paper and the like by means of cutting units of the type with discoid blades idle-mounted and rotary dragged by counter-blades also discoid and motor-driven which device is constituted, according to the present invention, by a first suction duct, located above the sliding plane of the paperboard sheet and parallel to the discoid cutting blade and then so arched as to expose its inlet mouth downstream of the cutting zone before the very blade where dusty residues form, and by a second suction duct either located under or forming the sliding plane of the sheet and practically downstream of the cutting zone, said second duct being exposed with its inlet mouth connected, through a tubular union and a drilled and grooved plate, to the same sliding plane suitably provided with through- perforations, the opposite free ends of said first and said second suction ducts being then connected to at least
- said first suction duct with the inlet mouth positioned before the discoid blade has preferably a substantially quadrangular cross-section, as well as a restraint flange substantially parallel to the suction duct, so as to allow the discoid blade to rotate between the duct and the flange, preventing at the same time a dispersal of the cutting residues and the air exhausted by the inlet mouth of said first suction duct.
- two separate filters may be provided for the first and the second suction duct, as well as two separate suction units connected to said first respectively said second suction duct.
- the dust exhaustion device of the present invention is mainly constituted by three basic components, illustrated in Figures 1-3a.
- this device is particularly designed and realised to work in correspondence of the cutting zone of a conventional machine with a discoid blade acting on an also discoid counter-blade, utilised for the longitudinal cutting of paperboard, bristol board, paper or like material, as will be better expounded later on.
- the dust exhaustion suction device is constituted by a suction duct 1 (Fig. 1) located above the sliding plane of the sheet to be cut, and a suction duct 2 (Fig. 2), located under said sliding plane, a drilled and grooved plate 3 being interposed between the sliding plane and duct 2, as will be better explained later on.
- the upper suction duct 1 is constituted, according to a preferred non exclusive embodiment, by a tubular body 1a having a quadrangular section tapered towards end 1b where the same tube has a hollow arched zone 1c, with opening 1d substantially perpendicular to the longitudinal axis of duct 1a; outside said hollow arched zone 1c a foil 1e is integral which is slightly divaricated with respect to said axis.
- a plate 1f is located outside said hollow zone 1 c and along the base side of the foil or vertical flange 1e, having the function of circumscribing the zone between bodies 1a and 1e which, as will be better clarified later on, will form the suction zone from both sides of the cutting zone, with suction of the cutting residues through opening 1d of the hollow zone 1c.
- Duct 1 is then connectable to another length of arched piping, indicated by 1g in the same Figure 1, which ends into a mouth 1h fitting with a flexible piping for the connection to the filtering system, as will be more clearly expounded later on.
- the lower suction duct 2 (Fig. 2) is constituted by a tubular union 2a, provided with a length of internal threading 2b at both opposite ends; transversally to union 2a quadrangular hopper 2c is located that ends into the cavity of the union, said hopper being provided in the upper part with peripheral holes 2d for the connection with a grooved and drilled plate 3, shown in prospect in Figure 3 and in section in Figure 3a.
- said plate 3a having a substantially rectangular shape, has peripherally through-holes 3b suitable to anchoring by means of screws or the like plate 3 to the quadrangular flange of union 2 which, as said, has like holes 2d.
- Said plate 3 is provided with circular through-apertures 4-4a-4b and grooves 5-5a, etc., united to said apertures 4-4a-4b, suitable, as a whole, to collect the cutting residues and to convey them, during suction, in the inside of union 2 and from the latter to a filter through a flexible piping 6; said piping 6 (Figs. 4-5) is connectable to either threaded end 2b of union 2, according to the position of the filtering zone; the threaded end of the same union 2, not connected to said flexible piping 6, is obviously closed by a stopper (not shown).
- the device constituted by said upper suction duct 1 and said lower suction duct 2-3 may be utilised on each cutting units of a known multi-blade machine, of the type having a discoid cutting blade rotary dragged by an also discoid motor-driven counter-blade, i.e. by a cutting unit such as, for instance, the one schematised in Figures 4-6.
- said cutting unit of a known type is generally constituted by a sliding plane 7 whereon a paperboard sheet or the like 8 is caused to advance; said cutting top is interrupted in correspondence of the discoid cutting blade 9 that carries out the longitudinal cutting of the paperboard against a counter-blade 10, also discoid, which is applied to a rotary support 10a, activated in its turn by a gearmotor (not shown).
- discoid blade 9 is associated to a freely rotary support 9a; besides, it is also vertically shiftable with respect to the cutting top 7 and horizontally shiftable through pneumatic adjustment means or also means hand-actionable by handwheel 9b (Fig. 4) respectively handwheel 9c (Fig. 5).
- the paperboard sheet 7 is fed at the start by two opposite rollers 11-11a (Fig. 4) and, after the cutting, it is dragged by two like dragging rollers or cylinders 12-12a (Fig. 4).
- the longitudinal cutting of paperboard 7 is carried out, as said, at first by lowering and shifting the cutting blade 9 towards the counter-blade, until the paperboard is cut into, and then by means of rotary dragging of the same blade 9, by contact with the arched part 10a of the counter-blade 10.
- the dust exhaustion device of the present invention is therefore so structured and positioned as to concern the zone downstream of the cutting point or section, as is clearly shown in Figures 4-6.
- the upper suction duct 1 is positioned by side and parallel with respect to the cutting blade 9, so as to allow the suction zone 1c, and more precisely the suction mouth 1d, to position before the cutting blade, while the vertical flange 1e of the same duct 1a is on the opposite part of the same cutting blade, as is clearly illustrated in Figure 6.
- the position of the suction mouth 1d of duct 1a allows to remove the cutting residues with a suction air volume which is reduced with respect to the known hoods that carry out suction both upstream and downstream of the cutting zone.
- the lower suction duct constituted by union 2 connected to the drilled and grooved plate 3, is applied under the sliding table 8 and more precisely in correspondence of the cutting zone downstream of blade 9.
- the suction carried out through the holes of plate 3 and the holes obtained in the sliding table allows to remove also the residues that might have not been exhausted by the upper duct 1a.
- Said duct 1 is associated to the support of the discoid cutting blade, while the lower duct 2 is fixed.
- a sleeve or union 13 is connected which, through a flexible pipe 6, is connected to a filtering and then suction unit, as shown in Figure 7.
- Said Figure 7 shows schematically a suction and filtering circuit for dusty residues produced by several cutting units placed at equidistance to each other on one longitudinal cutting machine.
- This suction and filtering unit is substantially constituted by a fan 14, connected to a filtering unit of a known type 15 through duct 16; said filtering unit is then connected, through a union 17 and a piping 19 designed to be connected to outlet 1h of several cutting units, said outlets being schematised as gates 18, 18a, etc.; the same upper union 17 is then connected, through a rigid or flexible piping 20, connectable in its turn, through unions 21, 21a, etc. to outlets 6a of pipes 6 (Fig. 4), connected to the lower suction duct 2, 3.
- Said filter 15 is then provided with means to convey, through a union 22 (Fig. 7), air for cleaning both the filter and ducts 19-20 and therefore also the upper and lower suction ducts of each cutting unit connected to said exhauster 14; besides, to filter 15 a collector is associated for the separate dusts, indicated by 15a in Figure 7.
- the dust exhaust devices provided on a same cutting machine may be associated groupwise, the groups being connected, in their turn, to two or more separate fans-exhausters.
- said second suction duct (2) may be constituted by a tubular body, so sized and shaped that it can be housed between the voids existing between the various cutting units 18-18a, and arranged with its inlet mouth directly at the level of the sliding plane, the opposite end of said tubular body being connected to an exhaust unit, substantially the one already provided for the suction of offcuts and other dusty wastes or the like.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Cutting Devices (AREA)
- Filtering Materials (AREA)
Abstract
Dust exhaustion device suitable for the removal of
dusty residues and the like produced on the machines
for the rectilinear cutting of paperboard sheets and
the like by a discoid cutting blade; said device is
constituted by an upper suction duct (1a), located
parallel to the cutting blade (9), and so arched as to
expose its suction mouth (1c) before said blade; there
being also provided a suction duct (2) located under
the cutting top, downstream of said discoid blade and
connected to said suitably perforated top through a
grooved drilled plate (3)
Said upper suction duct (1a) and said lower suction duct (2) being then connected to a suction unit (14) with the interposition of at least a filtering unit (15) for the collection of the residues exhausted through said two ducts.
Said upper suction duct (1a) and said lower suction duct (2) being then connected to a suction unit (14) with the interposition of at least a filtering unit (15) for the collection of the residues exhausted through said two ducts.
Description
The present invention relates to a suction dust
exhaustion device particularly suitable for the
continuous removal of dusty residues and foreign bodies
produced during the longitudinal cutting of paperboard
and paper sheets and the like on the conventional
discoid blade cutting machines.
As is known, cutting in parallel strips big-sized
paperboard, bristol board and the like is at present
carried out on longitudinal cutting machines having
horizontal axis discoid blades, acting on counter-blades
that are also discoid and motor-driven;
generally, said machines have several cutting blades
parallel with each other and whose mutual distance and
height is adjustable with respect to the corresponding
discoid counter-blades, in order to carry out at once
several longitudinal cuttings on paperboard sheets of
various thickness.
It is also known that each group comprising a discoid
cutting blade, the associated motor-driven counter-blade
and the kinematic gears for the transmission of
motion and the adjustment of both blades, constitutes a
cutting unit which, during the cutting stage,
unavoidably produces dusty residues or the detachment
of products that are possibly present on the faces of
the paperboard sheet, which are at present usually
removed by suction carried out in the inside of hoods
located at the sides of the cutting disk, i.e. in
correspondence of the cutting zone; besides, to ensure
a correct suction of the dusty residues, said suction
hoods are so sized as to concern a wide area both
before and behind the actual cutting zone.
In practice, these suction hoods of the known art
require therefore a strong suction current in order to
remove the dusty residues and to convey them, as they
are noxious, outside the work environment; on the other
hand, as said dusty residues form only downstream of
the cutting zone and not upstream of the same, the
presence of the hood upstream of the cutting zone
involves a suction that is actually useless; i.e. it
involves a consumption of suction air which does not
concern the zone where dusty residues form; besides,
the suction hoods of the known art have also the
drawback of uselessly exhausting also room air, because
of the high volume of suction air applied to the same.
Therefore, object of the invention is to provide a dust
exhaust device of the suction type, to exhaust the
dusty residues produced by the rectilinear cutting of
paperboard sheets and the like, so designed and
structured as to eliminate the drawbacks and the
limitations of the suction hoods of the known art that
are provided on the machines having discoid cutting
blades, and above all as to be able carry out a correct
and complete suction of said residues with a highly
reduced volume of suction air with respect to that
required by the present systems.
Another object of the invention is to provide a dust
exhaust device of the aforesaid type, so structured as
to allow suction both above and under the zone
downstream of the actual cutting zone, with extremely
reduced overall dimensions, and therefore with the
advantage of being of easily applicable on the present
machines with discoid cutting blades, without requiring
particular changes in the same machines.
A further object of the invention is to provide a dust
exhaust device equipped with means suitable to allow
the air exhausted from the cutting zone, i.e. an air
that is purified from the dust produced by cuttings, to
be let directly in the work environment.
These and still other objects that will be more clearly
stressed in the following are achieved by a device for
the dust exhaustion of the air exhausted from the
cutting zones of machines intended for the rectilinear
cutting of paperboard, paper and the like by means of
cutting units of the type with discoid blades idle-mounted
and rotary dragged by counter-blades also
discoid and motor-driven, which device is constituted,
according to the present invention, by a first suction
duct, located above the sliding plane of the paperboard
sheet and parallel to the discoid cutting blade and
then so arched as to expose its inlet mouth downstream
of the cutting zone before the very blade where dusty
residues form, and by a second suction duct either
located under or forming the sliding plane of the sheet
and practically downstream of the cutting zone, said
second duct being exposed with its inlet mouth
connected, through a tubular union and a drilled and
grooved plate, to the same sliding plane suitably
provided with through- perforations, the opposite free
ends of said first and said second suction ducts being
then connected to at least a suction unit,
substantially a fan, by means of flexible pipings or
the like, there being interposed between the fan and
the suction ducts at least a filtering unit for the
collection of exhausted dust before letting the
exhausted air in the work environment or outside the
same.
More particularly, said first suction duct with the
inlet mouth positioned before the discoid blade has
preferably a substantially quadrangular cross-section,
as well as a restraint flange substantially parallel to
the suction duct, so as to allow the discoid blade to
rotate between the duct and the flange, preventing at
the same time a dispersal of the cutting residues and
the air exhausted by the inlet mouth of said first
suction duct.
Besides, two separate filters may be provided for the
first and the second suction duct, as well as two
separate suction units connected to said first
respectively said second suction duct.
Further characteristics and advantages of the present
invention will be more apparent thanks to the following
detailed description, made with reference to the
attached drawings, included by way of non limiting
indication, wherein:
With reference to the aforementioned figures, the dust
exhaustion device of the present invention is mainly
constituted by three basic components, illustrated in
Figures 1-3a.
As already said, this device is particularly designed
and realised to work in correspondence of the cutting
zone of a conventional machine with a discoid blade
acting on an also discoid counter-blade, utilised for
the longitudinal cutting of paperboard, bristol board,
paper or like material, as will be better expounded
later on.
Hence, with reference to Figures 1 and 2, the dust
exhaustion suction device is constituted by a suction
duct 1 (Fig. 1) located above the sliding plane of the
sheet to be cut, and a suction duct 2 (Fig. 2), located
under said sliding plane, a drilled and grooved plate 3
being interposed between the sliding plane and duct 2,
as will be better explained later on.
More particularly, the upper suction duct 1 is
constituted, according to a preferred non exclusive
embodiment, by a tubular body 1a having a quadrangular
section tapered towards end 1b where the same tube has
a hollow arched zone 1c, with opening 1d substantially
perpendicular to the longitudinal axis of duct 1a;
outside said hollow arched zone 1c a foil 1e is
integral which is slightly divaricated with respect to
said axis. A plate 1f is located outside said hollow
zone 1 c and along the base side of the foil or
vertical flange 1e, having the function of
circumscribing the zone between bodies 1a and 1e which,
as will be better clarified later on, will form the
suction zone from both sides of the cutting zone, with
suction of the cutting residues through opening 1d of
the hollow zone 1c.
The lower suction duct 2 (Fig. 2) is constituted by a
tubular union 2a, provided with a length of internal
threading 2b at both opposite ends; transversally to
union 2a quadrangular hopper 2c is located that ends
into the cavity of the union, said hopper being
provided in the upper part with peripheral holes 2d for
the connection with a grooved and drilled plate 3,
shown in prospect in Figure 3 and in section in Figure
3a.
More precisely, said plate 3a, having a substantially
rectangular shape, has peripherally through-holes 3b
suitable to anchoring by means of screws or the like
plate 3 to the quadrangular flange of union 2 which, as
said, has like holes 2d. Said plate 3 is provided with
circular through-apertures 4-4a-4b and grooves 5-5a,
etc., united to said apertures 4-4a-4b, suitable, as a
whole, to collect the cutting residues and to convey
them, during suction, in the inside of union 2 and from
the latter to a filter through a flexible piping 6;
said piping 6 (Figs. 4-5) is connectable to either
threaded end 2b of union 2, according to the position
of the filtering zone; the threaded end of the same
union 2, not connected to said flexible piping 6, is
obviously closed by a stopper (not shown).
The device constituted by said upper suction duct 1 and
said lower suction duct 2-3, may be utilised on each
cutting units of a known multi-blade machine, of the
type having a discoid cutting blade rotary dragged by
an also discoid motor-driven counter-blade, i.e. by a
cutting unit such as, for instance, the one schematised
in Figures 4-6.
More particularly, said cutting unit of a known type is
generally constituted by a sliding plane 7 whereon a
paperboard sheet or the like 8 is caused to advance;
said cutting top is interrupted in correspondence of
the discoid cutting blade 9 that carries out the
longitudinal cutting of the paperboard against a
counter-blade 10, also discoid, which is applied to a
rotary support 10a, activated in its turn by a
gearmotor (not shown).
Also the discoid blade 9 is associated to a freely
rotary support 9a; besides, it is also vertically
shiftable with respect to the cutting top 7 and
horizontally shiftable through pneumatic adjustment
means or also means hand-actionable by handwheel 9b
(Fig. 4) respectively handwheel 9c (Fig. 5).
In this cutting unit, the paperboard sheet 7 is fed at
the start by two opposite rollers 11-11a (Fig. 4) and,
after the cutting, it is dragged by two like dragging
rollers or cylinders 12-12a (Fig. 4).
The longitudinal cutting of paperboard 7 is carried
out, as said, at first by lowering and shifting the
cutting blade 9 towards the counter-blade, until the
paperboard is cut into, and then by means of rotary
dragging of the same blade 9, by contact with the
arched part 10a of the counter-blade 10.
If paperboard 7 is fed as illustrated in Figures 4 and
5, the cut is carried out the cutting blade 9 that
rotates according to arrow A, as it is dragged by the
counter-blade that rotates according to arrow B
(Figures 4 and 5), and therefore the dusty residues
form prevailingly if not entirely, downstream of the
cutting zone, i.e. between the cutting blade and the
two dragging rollers (12-12a); before the cutting
point, i.e. between the cutting blade and the feed
rollers 11-11a, there cannot form, obviously, dust or
residues as the cutting is carried out in the zone of
the cutting blade 9.
Therefore, the removal by suction of said paperboard
dusty residues can be advantageously concentrated only
in the zone downstream of the actual cutting point. The
dust exhaustion device of the present invention is
therefore so structured and positioned as to concern
the zone downstream of the cutting point or section, as
is clearly shown in Figures 4-6.
In fact, in said figures, the upper suction duct 1 is
positioned by side and parallel with respect to the
cutting blade 9, so as to allow the suction zone 1c,
and more precisely the suction mouth 1d, to position
before the cutting blade, while the vertical flange 1e
of the same duct 1a is on the opposite part of the same
cutting blade, as is clearly illustrated in Figure 6.
Therefore, the position of the suction mouth 1d of duct
1a allows to remove the cutting residues with a suction
air volume which is reduced with respect to the known
hoods that carry out suction both upstream and
downstream of the cutting zone.
The lower suction duct, constituted by union 2
connected to the drilled and grooved plate 3, is
applied under the sliding table 8 and more precisely in
correspondence of the cutting zone downstream of blade
9. The suction carried out through the holes of plate 3
and the holes obtained in the sliding table allows to
remove also the residues that might have not been
exhausted by the upper duct 1a. Said duct 1 is
associated to the support of the discoid cutting blade,
while the lower duct 2 is fixed.
To one of the threaded holes 2b a sleeve or union 13 is
connected which, through a flexible pipe 6, is
connected to a filtering and then suction unit, as
shown in Figure 7.
Said Figure 7 shows schematically a suction and
filtering circuit for dusty residues produced by
several cutting units placed at equidistance to each
other on one longitudinal cutting machine.
This suction and filtering unit is substantially
constituted by a fan 14, connected to a filtering unit
of a known type 15 through duct 16; said filtering unit
is then connected, through a union 17 and a piping 19
designed to be connected to outlet 1h of several
cutting units, said outlets being schematised as gates
18, 18a, etc.; the same upper union 17 is then
connected, through a rigid or flexible piping 20,
connectable in its turn, through unions 21, 21a, etc.
to outlets 6a of pipes 6 (Fig. 4), connected to the
lower suction duct 2, 3.
Said filter 15 is then provided with means to convey,
through a union 22 (Fig. 7), air for cleaning both the
filter and ducts 19-20 and therefore also the upper and
lower suction ducts of each cutting unit connected to
said exhauster 14; besides, to filter 15 a collector is
associated for the separate dusts, indicated by 15a in
Figure 7.
Obviously, the dust exhaust devices provided on a same
cutting machine may be associated groupwise, the groups
being connected, in their turn, to two or more separate
fans-exhausters.
The presence of these filtering means allow the
continuous re-entering in the work environment of the
air exhausted and purified from both dusty residues
produced by cuttings and other powders that may be
possibly present in said work environment.
In the same way, always according to the present
invention, said second suction duct (2) may be
constituted by a tubular body, so sized and shaped that
it can be housed between the voids existing between the
various cutting units 18-18a, and arranged with its
inlet mouth directly at the level of the sliding plane,
the opposite end of said tubular body being connected
to an exhaust unit, substantially the one already
provided for the suction of offcuts and other dusty
wastes or the like.
Claims (6)
- A dust exhaustion device for the air exhausted from the cutting zone of machines intended for the longitudinal cutting of paperboard, paper sheets and the like by a cutting unit of the type with discoid blades (9) idle-mounted and rotary dragged by counter-blades (10) also discoid and motor-driven, characterised in that it is constituted by a first suction duct (1a), located above the sliding plane (7) of the paperboard web (8) and parallel to the discoid cutting blade (9) and then so arched as to expose its inlet mouth (1d) downstream of the cutting zone and practically in the zone before said blade (9), wherein dusty residues form, and by a second suction duct (2), located under or forming the sliding plane (7) of the sheet and practically downstream of the cutting zone, said second duct (2) exposing its inlet mouth (2b), connected through a tubular union (2c) and a drilled and grooved plate (3), to the same sliding plane (7), suitably provided with through-perforations, the opposite free ends of said first and second suction ducts being then connected to at least a suction unit (14) substantially a fan, by means of flexible pipings (16, 19, 20) or the like, at least a filtering unit (15, 15a) being interposed between fan (14) and the suction ducts (1a, 2) for the collection of the dusts exhausted before letting the exhausted air in the work environment or outside of the same.
- The dust exhaustion device according to claim 1, characterised in that said first suction duct (1a) with the inlet mouth (1c) positioned before the discoid blade (9) has preferably a substantially quadrangular cross-section, as well as a restraint flange (1e) substantially parallel to the suction duct (1a), so as to allow the discoid blade (9) to rotate between duct (1a) and flange (1e), preventing at the same time a dispersion of the residues and of the air exhausted through the inlet mouth (1c) of said first suction duct (1a).
- The dust exhaustion device according to claim 1, characterised in that it has two separate filters (15) interposed between the first suction duct (1a) and the second suction duct (2), as well as two separate suction units connected to said first respectively said second suction duct.
- The dust exhaustion device according to claim 1, characterised in that said second lower suction duct (2) is constituted by a tubular length which is transversally provided with a peripheral flange provided with holes (2d) for its anchoring to said drilled and grooved plate (3), as well as with threaded lengths (2b) at the opposite ends, for the alternated connection to a flexible piping (6) connected to said filtering unit (15).
- The dust exhaustion device according to one or more of the preceding claims, characterised in that said upper suction duct (1) is anchored to the means for the support and adjustment of the discoid cutting blade (9), while the lower suction duct (2) is anchored to the counter-blade, in such a way as to keep their relative position stable, whatever the shifting of the unit made up by the cutting blade and the associated counter-blade (10) required by the cutting needs.
- The dust exhaustion device according to one or more of the preceding claims, characterised in that said second suction duct (2) is constituted by a tubular body so sized and shaped that it can be housed between the voids existing between the various cutting units (18-18a) and positioned with its inlet mouth directly at the level of the sliding plane (7), and down stream the cutting zone, the opposite end of said tubular body being then connected to a suction unit, substantially the one already provided for the suction of offcuts and other dusty wastes or the like.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI971495 | 1997-06-25 | ||
| IT97MI001495A IT1292415B1 (en) | 1997-06-25 | 1997-06-25 | DEDUSTING DEVICE PARTICULARLY SUITABLE FOR THE ELIMINATION OF DUSTY RESIDUES PRODUCED DURING CUTTING |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0887160A2 true EP0887160A2 (en) | 1998-12-30 |
| EP0887160A3 EP0887160A3 (en) | 1999-12-01 |
Family
ID=11377430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98111496A Withdrawn EP0887160A3 (en) | 1997-06-25 | 1998-06-23 | Exhaustion device for the removal of the dust produced by cutting paperboard, paper and the like |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0887160A3 (en) |
| IT (1) | IT1292415B1 (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1125646A1 (en) * | 2000-02-01 | 2001-08-22 | Heidelberger Druckmaschinen Aktiengesellschaft | Method and means for removing particles from webs |
| WO2002064333A1 (en) * | 2001-02-14 | 2002-08-22 | Koenig & Bauer Aktiengesellschaft | Chip suctioning device for a longitudinal cutting device |
| DE102004060849B3 (en) * | 2004-12-17 | 2006-04-06 | Hildebrand Systeme Gmbh | Dust extraction system, at a printed paper web cutting station, has a protective shrouding around the circular cutting blade with a high speed air flow to gather dust and debris for collection and disposal |
| DE102012012262A1 (en) * | 2012-06-22 | 2013-12-24 | Brück KG | Suction device for cutting device of slicer for cutting e.g. toast bread during industrial production of toast bread, has receiving hopper staying in direct flow connection with suction pipe, which conveys baking product portions |
| WO2015128347A1 (en) * | 2014-02-27 | 2015-09-03 | Windmöller & Hölscher Kg | Suction channel for an extractor device for conveying cut waste strips of a film web |
| CN106976121A (en) * | 2017-05-19 | 2017-07-25 | 道真自治县茂峰中药材发展有限公司 | A kind of Chinese drug slicer with dust arrester |
| CN110216733A (en) * | 2019-06-24 | 2019-09-10 | 成都市温江区金桥包装有限公司 | A kind of paper cutter with collecting paper scrap device |
| WO2019233808A1 (en) * | 2018-06-07 | 2019-12-12 | Voith Patent Gmbh | Longitudinal cutting device for cutting a traveling material web |
| CN110919743A (en) * | 2019-12-07 | 2020-03-27 | 娄底高安环保科技有限公司 | Sponge scrap collecting device for cutting regenerated sponge |
| CN111588869A (en) * | 2020-04-23 | 2020-08-28 | 平阳县银新金融用品有限公司 | Ultraviolet disinfection money case |
| CN114043537A (en) * | 2021-11-01 | 2022-02-15 | 重庆维博动力科技有限公司 | Paperboard cutting equipment |
| CN114407098A (en) * | 2022-02-09 | 2022-04-29 | 王雨 | Cutting equipment of corrugated paper production usefulness with dust removal structure |
| WO2022116634A1 (en) * | 2020-12-03 | 2022-06-09 | 帕格曼科技(太仓)有限公司 | Electrically controlled mechanical cutting machine |
| WO2022223760A1 (en) | 2021-04-23 | 2022-10-27 | Gema Switzerland Gmbh | Cutting dust suction system with a suction hood, suction hood for a cutting dust suction system, and blade holder with a cutting dust suction system |
| DE102021119691A1 (en) | 2021-07-29 | 2023-02-02 | Voith Patent Gmbh | Dust extraction on the roll cutter |
| CN117507024A (en) * | 2024-01-05 | 2024-02-06 | 河南丽卡数控设备有限公司 | Vibrating knife cutting machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107139257A (en) * | 2017-06-29 | 2017-09-08 | 浙江中泰绝热材料有限公司 | Warming plate dust arrester |
| CN116135352B (en) * | 2023-04-19 | 2023-06-20 | 沧州市螺旋钢管集团有限公司 | Spiral steel pipe cutting smoke and dust follow-up dust collector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE444041C (en) * | 1927-05-18 | Georg Spiess | Holding and adjusting device for the upper circular knife for length cutter | |
| US1986726A (en) * | 1932-03-03 | 1935-01-01 | Grozier Thomas Hamilton | Means for arresting dust and fluff from machines or appliances for cutting paper andother fibrous materials |
| DE2903956A1 (en) * | 1979-02-02 | 1980-08-07 | Bollschweiler Hans Reinhold | Automatic thermoplastic film prodn. - in which machine slits extrusion to desired width and separately reduces each offcut for reuse |
| DE3416341A1 (en) * | 1984-05-03 | 1985-11-14 | Jagenberg AG, 4000 Düsseldorf | METHOD AND DEVICE FOR REMOVING EDGE STRIPS OF MATERIAL SHEETS OF PAPER, CARDBOARD OR THE LIKE |
| EP0183862A1 (en) * | 1984-12-03 | 1986-06-11 | Steinbeis Temming Papier GmbH & Co. | Apparatus for preparing format papers with a low dust content |
| DE4425666A1 (en) * | 1994-07-20 | 1996-01-25 | Roland Man Druckmasch | Strip cutting rotating roller blades |
-
1997
- 1997-06-25 IT IT97MI001495A patent/IT1292415B1/en active IP Right Grant
-
1998
- 1998-06-23 EP EP98111496A patent/EP0887160A3/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE444041C (en) * | 1927-05-18 | Georg Spiess | Holding and adjusting device for the upper circular knife for length cutter | |
| US1986726A (en) * | 1932-03-03 | 1935-01-01 | Grozier Thomas Hamilton | Means for arresting dust and fluff from machines or appliances for cutting paper andother fibrous materials |
| DE2903956A1 (en) * | 1979-02-02 | 1980-08-07 | Bollschweiler Hans Reinhold | Automatic thermoplastic film prodn. - in which machine slits extrusion to desired width and separately reduces each offcut for reuse |
| DE3416341A1 (en) * | 1984-05-03 | 1985-11-14 | Jagenberg AG, 4000 Düsseldorf | METHOD AND DEVICE FOR REMOVING EDGE STRIPS OF MATERIAL SHEETS OF PAPER, CARDBOARD OR THE LIKE |
| EP0183862A1 (en) * | 1984-12-03 | 1986-06-11 | Steinbeis Temming Papier GmbH & Co. | Apparatus for preparing format papers with a low dust content |
| DE4425666A1 (en) * | 1994-07-20 | 1996-01-25 | Roland Man Druckmasch | Strip cutting rotating roller blades |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1125646A1 (en) * | 2000-02-01 | 2001-08-22 | Heidelberger Druckmaschinen Aktiengesellschaft | Method and means for removing particles from webs |
| US6912942B2 (en) | 2000-02-01 | 2005-07-05 | Goss International Montataire S.A. | Method and device for removing particles from webs of material |
| WO2002064333A1 (en) * | 2001-02-14 | 2002-08-22 | Koenig & Bauer Aktiengesellschaft | Chip suctioning device for a longitudinal cutting device |
| DE102004060849B3 (en) * | 2004-12-17 | 2006-04-06 | Hildebrand Systeme Gmbh | Dust extraction system, at a printed paper web cutting station, has a protective shrouding around the circular cutting blade with a high speed air flow to gather dust and debris for collection and disposal |
| EP1671762A1 (en) | 2004-12-17 | 2006-06-21 | Hildebrand Systeme GmbH | Apparatus for removing dust produced by an operation, in particular a cutting operation |
| DE102012012262A1 (en) * | 2012-06-22 | 2013-12-24 | Brück KG | Suction device for cutting device of slicer for cutting e.g. toast bread during industrial production of toast bread, has receiving hopper staying in direct flow connection with suction pipe, which conveys baking product portions |
| DE102012012262B4 (en) * | 2012-06-22 | 2016-06-30 | HERR Industry System GmbH & Co. KG | Suction device and suction system for a cutting device for dough |
| WO2015128347A1 (en) * | 2014-02-27 | 2015-09-03 | Windmöller & Hölscher Kg | Suction channel for an extractor device for conveying cut waste strips of a film web |
| CN106976121A (en) * | 2017-05-19 | 2017-07-25 | 道真自治县茂峰中药材发展有限公司 | A kind of Chinese drug slicer with dust arrester |
| WO2019233808A1 (en) * | 2018-06-07 | 2019-12-12 | Voith Patent Gmbh | Longitudinal cutting device for cutting a traveling material web |
| CN110216733A (en) * | 2019-06-24 | 2019-09-10 | 成都市温江区金桥包装有限公司 | A kind of paper cutter with collecting paper scrap device |
| CN110919743A (en) * | 2019-12-07 | 2020-03-27 | 娄底高安环保科技有限公司 | Sponge scrap collecting device for cutting regenerated sponge |
| CN111588869A (en) * | 2020-04-23 | 2020-08-28 | 平阳县银新金融用品有限公司 | Ultraviolet disinfection money case |
| WO2022116634A1 (en) * | 2020-12-03 | 2022-06-09 | 帕格曼科技(太仓)有限公司 | Electrically controlled mechanical cutting machine |
| WO2022223760A1 (en) | 2021-04-23 | 2022-10-27 | Gema Switzerland Gmbh | Cutting dust suction system with a suction hood, suction hood for a cutting dust suction system, and blade holder with a cutting dust suction system |
| DE102021110512A1 (en) | 2021-04-23 | 2022-10-27 | Gema Switzerland Gmbh | CUT DUST EXTRACTION SYSTEM WITH AN EXTRACTION HOOD, EXTRACTION HOOD FOR A CUT DUST EXTRACTION SYSTEM AND KNIFE HOLDER WITH A CUT DUST EXTRACTION SYSTEM |
| DE102021119691A1 (en) | 2021-07-29 | 2023-02-02 | Voith Patent Gmbh | Dust extraction on the roll cutter |
| CN114043537A (en) * | 2021-11-01 | 2022-02-15 | 重庆维博动力科技有限公司 | Paperboard cutting equipment |
| CN114407098A (en) * | 2022-02-09 | 2022-04-29 | 王雨 | Cutting equipment of corrugated paper production usefulness with dust removal structure |
| CN117507024A (en) * | 2024-01-05 | 2024-02-06 | 河南丽卡数控设备有限公司 | Vibrating knife cutting machine |
| CN117507024B (en) * | 2024-01-05 | 2024-04-12 | 河南丽卡数控设备有限公司 | Vibrating knife cutting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1292415B1 (en) | 1999-02-08 |
| ITMI971495A1 (en) | 1998-12-25 |
| ITMI971495A0 (en) | 1997-06-25 |
| EP0887160A3 (en) | 1999-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0887160A2 (en) | Exhaustion device for the removal of the dust produced by cutting paperboard, paper and the like | |
| US5980598A (en) | Filter cleaning system including individually driven belt mounted extending nozzles | |
| US5855154A (en) | Method of forming large diameter duct with liner and the product formed thereby | |
| JPH07266084A (en) | Method and device for cutting blank | |
| CN209335712U (en) | The diced system of amenities | |
| USRE20687E (en) | For cutting paper and other fibrous materials | |
| EP1671762A1 (en) | Apparatus for removing dust produced by an operation, in particular a cutting operation | |
| JPH07237185A (en) | Sheet cutting device | |
| US5205847A (en) | Air cleaning apparatus | |
| CN112847529A (en) | Interchangeability extension cutting device for new material technology development | |
| CN108638172A (en) | New energy materials segmenting device | |
| CN117206650A (en) | Plasma cutting machine with dust collector | |
| US1986726A (en) | Means for arresting dust and fluff from machines or appliances for cutting paper andother fibrous materials | |
| CN214269068U (en) | Dust collector is used in processing of chemical fertilizer raw materials | |
| US7232085B2 (en) | Diverter and chopper valve for an air conveyed continuous strip of material | |
| CN112318637A (en) | Plate processing device for building interior decoration | |
| CN211763841U (en) | Three-edge sealing bag making machine | |
| CN110524623A (en) | A kind of full-automatic stripping die-cutting machine | |
| CN210458651U (en) | Shearing device for cloth | |
| CN220331342U (en) | Mask production slitting equipment with adjusting function | |
| JP5344951B2 (en) | Continuous paper slit ear guide device | |
| CN210791574U (en) | Cutting machine for processing light bricks | |
| CN210847490U (en) | Cleaning equipment and assembly line | |
| CN211362523U (en) | Intelligent slitting machine | |
| CN211199868U (en) | Antibacterial spunlace non-woven fabric dividing and cutting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| AKX | Designation fees paid | ||
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20000602 |