Title of Invention

AN APPARATUS ON A CARDING MACHINE, CLEANING MACHINE OR SIMILAR MACHINES FOR COTTON

Abstract The invention relates to an apparatus on a carding machine, cleaning machine or similar machine for cotton, having at least two clothed rollers, for example, saw-tooth or spiked rollers, arranged downstream of a feeding arrangement, in which apparatus a separation edge for impuriies, for example, a separating blade, directed against the direction of rotation and with an accompanying separating opening is associated with atleast one clothed roller, to draw out the fibre material the circumferential speed of the downstream clothed roller is greater than the circumferential speed of the upstream clothed roller, the clothed rollers are arranged in series and each downstream clothed roller co-operates with the upstream clothed roller as doffing and opening roller. The separating edge (22,27,27a;48,49;56) is arranged in a roller nip (wedge-shaped area) between two co-operating rollers (3a,3b,3c;31,32,33,34). FIGURE 2
Full Text The invention relates to an apparatus on a carding
machine, cleaning machine or the like for fibre
material, especially cotton.
In a known apparatus, associated with each roller
of a multi-roller cleaning machine is a separating edge
(separating blade), which co-operates with a covering
element that covers part of the same roller. The fibre
material removed by the clothing of the upstream roller
and picked up by the clothing of the downstream roller
moves through this covering in the direction of
rotation in an enclosed space. The covering element
extends against the direction of rotation right into
the upstream roller nip and fills this completely.
Between the separating edge and the free end of the
covering element there is a separating opening for
trash and so on. The separating edge co-operates with
a suction hood.
It is an aim of the invention even further to
improve such an apparatus on a carding machine,
cleaning machine or similar machine for fibre material,
especially cotton.
The invention provides an apparatus on a spinning
preparation machine having at least two clothed rollers
arranged in series, each downstream clothed roller co-
operating with an adjacent upstream clothed roller to
receive fibre material therefrom, the apparatus further
comprising a separating edge associated with a said
clothed roller, said separating edge further being
associated with a separating opening and being arranged
in a roller nip between two co-operating rollers.
The arrangement in accordance with the invention
of the separating edge enables trash and so on to be
removed from the fibre material in the zone where
opening of the fibre material takes place. Because the
circumferential speed of the rollers increases in the
working direction, the fibre material is subjected to a
drawing out process during the transition from an
upstream to a downstream roller. In that situation,
all the fibres are moving relative to one another, and
in the course of this the fibre material is opened up.
The impurities present in the fibre material also move
and become re-orientated in the drawn-out and thus
loosened fibre lap. Additionally, during the
transition to the following roller the fibre material
changes into an oppositely curved configuration. At
that point, especially between the point where it
becomes detached from the upstream roller and the point
where it is transferred onto the downstream roller,
where, in order to bring about drawing out, the fibre
material lies freely between the clothings, the
impurities can be effectively separated from the fibre
material by the separating edge and discharged.
The arrangement is preferably such that in use the
downstream roller of said two co-operating rollers has
a greater circumferential speed than that of the
upstream roller of said two co-operating rollers.
The separating edge, for example, a separating
blade, on the one roller expediently co-operates with a
covering element that at least partly covers the
respective other clothed roller. The covering element
is preferably curved. The covering element is
advantageously displaceable parallel to the roller
surface. A suction hood for trash or similar is
preferably associated with the separating blade. The
separating blade is expediently arranged at an angle in
relation to the clothed roller. The direction of
rotation of the respective downstream clothed roller is
advantageously opposed to the direction of rotation of
the respective upstream clothed roller. The direction
of rotation of the respective downstream clothed
rollers and the rotation of the respective upstream
clothed rollers are preferably the same. There is
expediently a spacing between the separating edge and
the clothing of the roller. The separating edge is
preferably associated with the respective downstream
roller of two co-operating rollers. The covering
element is advantageously associated with the
respective upstream roller of two co-operating rollers.
The fibre material preferably undergoes a diversion
during the transition between the co-operating rollers.
The trash or similar expediently passes through between
the separating edge and the covering element. The
separating edge is preferably arranged in the widening
roller nip. The opening dimension (0) is
advantageously adjustable, for example, in dependence
on the fibre length and/or the quantity of waste. The
separating opening is preferably located in the roller
nip. The suction hood is expediently associated with
the roller nip. The covering element is preferably
arranged in the roller nip. The spacing between the
open end of the covering element and the point at which
the fibre material is detached from the roller is
advantageously adjustable. The apparatus is preferably
provided between every two rollers of a multi-roller
cleaning machine. The apparatus is expediently
provided between every two licker-ins of a carding
machine. Advantageously there are at least three
clothed rollers arranged in series and there is a
separating edge arranged in a roller nip between each
adjacent two of said at least three rollers. The
spinning preparation machine may be a carding machine
cleaning machine or the like.
The invention also provides an apparatus on a
carding machine, cleaning machine or similar machine
for cotton, having at least two clothed rollers, for
example, saw-tooth or spiked rollers, arranged
downstream of a feeding arrangement, in which apparatus
a separating edge for impurities, for example, a
separating blade, directed against the direction of
rotation, is associated together with an accompanying
separating opening with at least one clothed roller, to
draw out the fibre material the circumferential speed
of the downstream clothed roller is greater than the
circumferential speed of the upstream clothed roller,
the clothed rollers are arranged in series and each
downstream clothed roller co-operates with the upstream
clothed roller as doffing and opening roller, wherein
the separating edge is arranged in a roller nip (wedge-
shaped area) between two co-operating rollers.
Certain illustrative embodiments of the invention
will now be described in detail with reference to the
accompanying drawings, of which:
Fig. 1 is a diagrammatic side view of a carding
machine with an apparatus according to the invention;
Fig. 2 is a side view, partly in section, of a
detail of the apparatus shown in Fig. 1;
Fig. 3 is a diagrammatic side view of a cleaning
machine with an apparatus according to the invention;
Fig. 4 is a side view of a portion of an apparatus
according to the invention showing the transition and
drawing out of the fibre material between two co-
operating rollers;
Fig. 5 is a diagrammatic view of the angular and
spaced arrangement of the separating blade with respect
to a licker-in having a saw-tooth clothing; and
Fig. 6 is a side view, partly in section of a
further embodiment of the invention.
Figure 1 shows a carding machine, for example, a
high-performance DK 903 carding machine made by
Trutzschler GmbH & Co. K.G., with feed roller 1, feed
table 2, licker-ins 3a, 3b, 3c, cylinder 4, doffer 5,
stripping roller 6, squeezing rollers 7, 8, web-guide
element 9, web funnel 10, take-off rollers 11, 12 and
revolving card top 13 with card top bars 14 that
revolve slowly. The directions of rotation of the
rollers of the carding machine are indicated by curved
arrows. At the output of the carding machine there is
a can coiler 16 with a can 15 in which sliver is
deposited. The letter A denotes the working direction
(direction of flow of the fibre material). As may be
seen more clearly in Fig. 2, a separating blade 22 is
arranged in the roller nip (wedge-shaped area) between
the licker-ins 3a and 3b and a separating blade 27 is
arranged in the roller nip between the licker-ins 3b
and 3c.
Referring again to Fig. 1, the fibre material to
be carded is fed in lap-form from an apparatus not
shown more specifically to the fibre-feeding
arrangement, which comprises the feed table 2 and the
feed roller 1. The lap is held securely between feed
roller 1 and feed table 2 and conveyed by clockwise
rotation of the feed roller 1 slowly towards the pin-
studded roller 3a. The pins 32 of the pin-studded
roller 3a catch in the advanced lap and detach fibres
from the lap, which are transported onward by the pins
or needles 32. The pin-studded roller 3a rotates at a
substantially higher speed than the feed roller 1 and
turns anti-clockwise, in the opposite direction to the
direction of rotation of the feed roller 1. The
detached fibres travel past a separating opening, where
impurities are removed at a separating edge of a
separating blade and are carried away by means of a
suction device. The fibres subsequently travel past a
fixed carding element 18 before they reach the
following licker-in roller 3b, which is equipped with a
saw-tooth clothing 34, rotates clockwise and turns at a
higher circumferential speed than the licker-in 3a.
From the rotating licker-in roller 3b, the fibres are
transferred to the licker-in roller 3c rotating anti-
clockwise. The licker-in roller 3c is also provided
with a saw-tooth clothing 36, but in this case the saw
teeth are finer than they are on the licker-in roller
3b. From the licker-in roller 3b, the fibres are
transferred to the cylinder 4 of the carding machine.
All licker-in rollers 3a to 3c - the pin-studded roller
3a is also a licker-in roller - are provided as far as
is possible with a covering.
Between the licker-ins 3a and 3b there are two
rollers nips (wedge-shaped areas). As shown in Figure
2, in the converging roller nip, that is, the roller
nip closing in directions of rotation 31 and 33, there
is arranged a covering element 21, for example, an
extruded section, which closes the roller nip. In the
diverging roller nip, that is, the roller nip widening
in directions of rotation 31 and 33, there is arranged
a separating blade 22, the separating edge 22a of which
is arranged opposing the direction of rotation 33 of
the licker-in 3b with a spacing with respect to the
clothing 34. The spacing a (corresponding to that
between the separating edge 27a and the adjacent
clothing in Fig. 5) can be adjusted by an adjusting
device 25, for example, an adjusting screw. In the
diverging roller nip there is also present a curved
covering element 23 with an open end, which covers a
part of the licker-in 3a. The covering element 23 is
(in a manner not shown) concentrically displaceable
with respect to the outer surface of the licker-in 3a.
It can also be pivoted about a centre of rotation away
from the licker-in 3a and towards the licker-in 3a. A
common suction hood 24 for trash, dust, short fibres
and the like is associated with the separating blade 22
and the covering element 23.
Two roller nips (wedge-shaped areas) are
correspondingly present between the licker-ins 3b and
3c. As shown in Figure 2, in the converging roller
nip, that is, the roller nip closing in directions of
rotation 33 and 35, there is arranged a covering
element 26, for example, an extruded section, which
closes the roller nip. In the diverging roller nip,
that is in the roller nip widening in the directions of
rotation 33 and 35, there is arranged a separating
blade 27, the separating edge 27a of which is arranged
opposing the direction of rotation 35 of the licker-in
3c with a spacing a with respect to the clothing 36.
The spacing a can be adjusted by an adjusting device
30, for example, an adjusting screw. In the diverging
roller nip there is also present a curved covering
element 28 with an open end 28a, which covers a part of
the licker-in 3b. The covering element 28 is (in a
manner not shown) concentrically displaceable with
respect to the outer surface of the licker-in 3b and
pivotable. A common suction hood 29 for trash, duct,
short fibres and the like is associated with the
separating blade 27 and the covering element 28.
Three fixed carding elements 19a, 19b and 19c are
associated with the licker-in 3b and two fixed carding
elements 20a, 20b are associated with the licker-in 3c.
The fixed carding elements are arranged, in the
direction of rotation of the roller, downstream of the
respective upstream separating blade.
Figure 3 shows a cleaning machine in which four
rollers 31, 32, 33 and 34 are arranged in succession,
the directions of rotation of which are denoted by the
letters A, B, C and D. At the end of the roller 34
there is a pneumatic suction arrangement 35 for the
fibre material (arrow F). The diameter of the rollers
31 to 34 is the same. The circumferential speed of
each successive roller is greater than the
circumferential speed of the respective preceding
roller.
The fibre material to be cleaned, cotton in
particular, is supplied in flock form to the cleaning
device arranged in a closed housing. This is effected,
for example, through a feed chute (not illustrated), by
a conveyor belt or similar. The lap is conveyed by
means of two feed rollers 36, 37, by being gripped by
them, to a pin-studded roller 31 (diameter 150 to 300
mm, for example, 250 mm), which is rotatably mounted in
the housing and rotates anti-clockwise (arrow A).
Downstream of the pin-studded roller 31 is a clothed
roller 32. The clothed roller 32 is covered with a
saw-tooth clothing and has a diameter of about 150 to
300 mm, for example, 250 mm. The roller 31 has a
circumferential speed of about 10 to 21 m/sec, for
example, 15 m/sec, the roller 32 has a circumferential
speed of about 15 to 25 m/sec, the roller 33 has a
circumferential speed of about 30 to 35 m/sec, for
example, 32 m/sec, and the roller 34 has a
circumferential speed of about 40 to 50 m/sec, for
example, 46 m/sec.
A separating opening 38 for discharge of
impurities in the fibre is associated with the pin-
studded roller 31, the size of the opening being
matched or capable of being matched to the degree of
contamination of the cotton. A separating edge 39, for
example, a blade, is associated with the separating
opening 38. In the direction of arrow A, a further
separating opening and a separating edge are present
adjacent to the roller 31. The reference numerals 42
and 43 denote fixed carding elements.
In the converging roller nips between each two
adjacent co-operating rollers there is a respective
covering element filling out the roller nip, that is, a
covering element 44 between the rollers 31 and 32, a
covering element 45 between the rollers 32 and 33 and a
covering element 46 between the rollers 33 and 34. In
the diverging roller nips between each two adjacent co-
operating rollers there is a respective separating
blade with a separating edge, that is, a separating
blade 47 between the rollers 31 and 32, a separating
blade 48 between the rollers 32 and 32 and a separating
blade 49 between the rollers 33 and 34.
A covering element 50 lying opposite the
separating blade 47 is associated with the roller 31, a
covering element 51 lying opposite the separating blade
48 is associated with the roller 32 and a covering
element 52 lying opposite the separating blade 49 is
associated with the roller 34. The separating blade 47
and the covering element 50 are connected to a common
suction arrangement 53, the separating blade 48 and the
covering element 51 are connected to a common suction
arrangement 54 and the separating blade 4 9 and the
covering element 52 are connected to a common suction
arrangement 55. Between the separating edge 47a of the
separating blade 47 and the open end 50a of the
covering element 50 there is a gab b, through which the
trash I separated from the fibre material H passes and
is sucked off (in corresponding manner to that
illustrated in respect of rollers 3b and 3c in Fig. 4,
described below). The gap b extends far into the
roller nip. There are no structural elements between
the gap b and the narrow point between the rollers 31
and 32. The fibre material H transfers from the roller
31 to the roller 32 in this space. Corresponding
statements apply to the downstream separating blades
47, 48, 49, covering elements 50, 51, 52, suction hoods
53, 54, 55, diverging roller nips, converging roller
nips, fibre material transfers, trash separations and
discharges and so on. The separating blades 47, 49 and
the associated separating openings, the upper roller
covering elements 50, 52 and the fixed carding elements
56a, 56b and 58a, 58b are provided on a common cover
which is pivotable about a pivot as indicated by the
arrows H, I in Fig. 3.
Two fixed carding elements 56a, 56b are associated
with the roller 32, two fixed carding elements 57a, 57b
are associated with the roller 33 and two fixed carding
elements 58a, 58b are associated with the roller 34.
The mode of operation is as follows: the lap
consisting of fibre flocks is fed from the feed rollers
36, 37, by being gripped, to the pin-studded roller 31,
which combs through the fibre material and carries away
tufts of fibre on its pins. As the roller 31 passes
the separating opening, corresponding to the
circumferential speed and curvature of this roller and
the size of the separating opening adapted to this
first separation stage, short fibres and coarse
impurities are flung out of the fibre material by
centrifugal force; after they have passed through the
separating opening the short fibres and impurities
enter a waste chamber in the housing. The fibre
material pre-cleaned in this way is removed, undergoing
further opening, from the first roller 31 by the tips
of the clothing on the clothed roller 32. As the
roller 32 passes the separating edge 47a, further
impurities are flung out of the fibre web by the
centrifugal force.
With reference to Figure 4, at the transition from
the relatively slowly rotating licker-in 3b to the
relatively rapidly rotating licker-in 3c the fibre
material H is subjected to drawing out in region 0.
The letter 0 denotes a first opening dimension. It
corresponds substantially to the distance between the
point at which the fibre material H becomes detached
from the licker-in 3b and the point at which fibre
material H is taken up by the licker-in 3c. The
distance between the point at which the fibre material
H is detached from the licker-in 3b and the open end
28a of the covering element 28 denotes the second
opening dimension Y.
The letter I denotes the separated foreign matter
such as trash and so on.
In the embodiment of Figure 6, in the diverging
roller nip a separating blade 56 is associated with the
licker-in 3a and a covering element 57 is associated
with the licker-in 3b.
WE CLAIM:
i. An apparatus on a carding machine, cleaning machine or
similar machine for cotton having at least two clothed rollers,
for example, saw-tooth or spiked rollers, arranged downstream of
a feeding arrangement, in which apparatus a separating edge for
impurities, for example, a separating blade, directed against
the direction of rotation and with an accompanying separating
opening is associated with at least one clothed roller, to draw
out the fibre material the circumferential speed of the
downstream clothed roller is greater than the circumferential
speed of the upstream clothed roller, the clothed rollers are
arranged in series and each downstream clothed roller co-operates
with the upstream clothed roller as doffing and opening roller,
characterized in that the separating edge (22, 27,27a;
47;48,49;56) is arranged in a roller nip (wedge-shaped area)
between two co-operating rollers (3a, 3b, 3c; 31, 32, 33,34).
2. An apparatus as claimed in claim 1, wherein the separating
edge (22, 27, 27a; 47, 48, 49; 56), for example, a separating
blade, at the one roller (3a, 3b, 3c, 31, 32, 33 34) co-operates
with a covering element (23,2B;50,51,52;57) that at least partly
covers the respective other roller (3a,3b,3c;31,32,33,34).
4. An apparatus as claimed in any one of claims 1 to 3, wherein
the covering element (23,28;50,51,52;57) is displaceable parallel
to the roller surface.
5. An apparatus as claimed in any one of claims 1 to 4, wherein
a suction hood (24,29;53,54,55;58> for a trash or similar
is associated with the separating blade (22,27,27a;47,48,49;56).
6. An apparatus as claimed in any one of claims 1 to 5, wherein
the separating blade (22,27,27a;47,48,49;56) is arranged
tangentially in relation to the clothed roller
(3a,3b,3c531,32,33,34).
7. An apparatus as claimed in any one of claims 1 to 6, wherein
the separating blade (22,27,27a;47,48,49;56) is arranged at an
angle in relation to the clothed roller (3a,3b,3c;31,32,33,34).
8. An apparatus as claimed in any one of claims 1 to 7, wherein
the direction of rotation (33, 35, B, C, D) of the respective
downstream clothed roller (3b, 3c; 32,33,34) is opposed to the
direction of rotation (31 , 33, A,B,C) of the respective upstream
clothd roller (3a, 3b; 31,32,33).
9. An apparatus as claimed in any one of claims 1 to 8, wherein
the direction of rotation (33 , 35 ; B,C,D) of the respective
downstream clothed rollers (3b, 3c; 32,33,34) and the rotation of
the respective upstream clothed rollers (3a, 3b; 31,32,33) are
the same.
10. An apparatus as claimed in any one of claims 1 to 9, wherein
there is a spacing (a) between the separating edge
(22,27,27a;47,48,49;56) and the clothing (32, 34 ; 36 ; 60 ,61,62,63
of the roller (3a,3b,3c; 31,32,33,34).
11. An apparatus as claimed in any one of claims 1 to 20,
wherein the separating edge is associated with the respective,
downstream roller (3b,3c;32,33,34) of two co-operating rollers.
12. An apparatus as claimed in any one of claims 1 to 11,
wherein the covering element (23,28;50,51,52;57) is associated
with the respective upstream roller (3a,3b;31,32,33) of two co-
operating rollers.
13. An apparatus as claimed in any one of claims 1 to 12,
wherein the fibre material (H) undergoes a diversion during the
transfer between the co-operating rollers (3a,3b,3c;31.32,33,34).
14. An apparatus as claimed in any one of claims 1 to 13,
wherein the trash (1) or the like passes through (b) between the
separating edge (22,27,27a;47,48,49;56) and the covering
element (23,2B;50,51,52;57).
15. An apparatus as claimed in any one of claims 1 to 14,
wherein the separating edge (22,27,27a;47,48,49;56) is arranged
in the widening (diverging) roller nip.
16. An application as claimed in any one of claims 1 to 15;
wherein the opening dimension (0) is adjustable, for example, in
dependence on the fibre length and/or the quentity of waste.
17. An apparatus as claimed in any one of claims 1 to 16,
wherein the separating opening (b) is arranged in the roller nip.
18. An apparatus as claimed in any one of claims 1 to 17,
wherein the suction hood (24,29553,54,55;5B) is associated with
the roller nip.
19. An apparatus as claimed in any one of claims 1 to 18,
wherein the covering element (23,2B;50,51,52;57) is arranged in
the roller nip.
20. An apparatus as claimed in any one of claims 1 to 19,
wherein the spacing between the free end (28a) of the covering
element (23,28;50,51,52;57) and the point at which the fibre
material is detached from the roller (3a,3b,3c;31,32,33,34) is
adjustable.
21. An apparatus as claimed in any one of claims 1 to 20,
wherein the apparatus is provided between every two rollers
(31,32,33,34) of a multi-roller cleaning machine.
22. An apparatus as claimed in any one of claims 1 to 21,
wherein the apparatus is provided between every two licker-ins
(3a,3b,3c) of a carding machine.
23. An apparatus as claimed in any one of claims 1 to 22,
wherein the fixed carding elements (8,19a,19b,20a,20b;42,43;56a,56b,
57a, 57b, 58a, 58b) are associated with the rollers,
(3a,3b,3c;31,32,33,34).

The invention relates to an apparatus on a carding machine,
cleaning machine or similar machine for cotton, having at least
two clothed rollers, for example, saw-tooth or spiked rollers,
arranged downstream of a feeding arrangement, in which apparatus
a separation edge for impuriies, for example, a separating blade,
directed against the direction of rotation and with an
accompanying separating opening is associated with atleast one
clothed roller, to draw out the fibre material the
circumferential speed of the downstream clothed roller is greater
than the circumferential speed of the upstream clothed roller,
the clothed rollers are arranged in series and each downstream
clothed roller co-operates with the upstream clothed roller as
doffing and opening roller. The separating edge
(22,27,27a;48,49;56) is arranged in a roller nip (wedge-shaped
area) between two co-operating rollers (3a,3b,3c;31,32,33,34).
FIGURE 2

Documents:

547-cal-2001-abstract.pdf

547-CAL-2001-ASSIGNMENT.pdf

547-cal-2001-claims.pdf

547-CAL-2001-CORRESPONDENCE 1.1.pdf

547-cal-2001-correspondence.pdf

547-cal-2001-description (complete).pdf

547-cal-2001-drawings.pdf

547-cal-2001-examination report 1.1.pdf

547-cal-2001-examination report.pdf

547-CAL-2001-FORM 1.1.1.pdf

547-cal-2001-form 1.pdf

547-cal-2001-form 18 1.1.pdf

547-cal-2001-form 19.pdf

547-cal-2001-form 2.pdf

547-cal-2001-form 26 1.1.pdf

547-cal-2001-form 26.pdf

547-cal-2001-form 3 1.1.pdf

547-cal-2001-form 3.pdf

547-cal-2001-form 5 1.1.pdf

547-cal-2001-form 5.pdf

547-cal-2001-granted-abstract.pdf

547-cal-2001-granted-claims.pdf

547-cal-2001-granted-description (complete).pdf

547-cal-2001-granted-drawings.pdf

547-cal-2001-granted-form 1.pdf

547-cal-2001-granted-form 2.pdf

547-cal-2001-granted-specification.pdf

547-CAL-2001-OTHERS.pdf

547-CAL-2001-PA.pdf

547-CAL-2001-PRIORITY DOCUMENT 1.1.pdf

547-cal-2001-priority document 1.2.pdf

547-cal-2001-priority document.pdf

547-cal-2001-reply to examination report 1.1.pdf

547-cal-2001-reply to examination report.pdf

547-cal-2001-specification.pdf


Patent Number 243337
Indian Patent Application Number 547/CAL/2001
PG Journal Number 41/2010
Publication Date 08-Oct-2010
Grant Date 06-Oct-2010
Date of Filing 25-Sep-2001
Name of Patentee TRUTZSCHLER GMBH & CO. KG.
Applicant Address DUVENSTRASSE 82-92, D-41199, MOHCHENGLADBACH
Inventors:
# Inventor's Name Inventor's Address
1 HERR PFERDMENGES GERD WAAT NR. 3 D-41363 JUCHEN
2 HERR SCHMITZ MARKUS KUHLENWEG 79 D-41236 MONCHENGLADBACH
PCT International Classification Number D01H 5/74
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 10048664.9 2000-09-30 Germany