Title of Invention

A DEVICE FOR A CARDING MACHINE FOR COTTON/SYNTHETIC FIBERS OR THE LIKE

Abstract A device for a carding machine for cotton, synthetic fibers and the like, comprising at least one flat bar with flat bar clothing attached thereto positioned opposite the clothing of a roller, for example, a drum. The drum clothing is attached to a support or carrier provided with fastening elements engaging the flat bar. In order to make possible a stably trimmed flat bar (14) in a simple way the flat bar (14) and change of card clothing strip (18), the support (26, 26a) connected to the card clothing strip (18) is rigidly built and the fastening elements (26b, 26c; 26b2, 26C2) exert pressure on the flat bar (14b, 1ff, 14g; 140, 14p)
Full Text Device at a card for cotton, chemical fibres and the equivalent in which at least one flat
rod with a flat clothing is present.
The invention refers to a device for a carding machine for cotton, synthetic fibres and
the like in which at least one flat rod with a flat clothing is present wherein the flat
clothing is fixed to the flat rod and lies opposite to the card clothing of a roller for
example the drum wherein the card clothing streak is fixed to a carrier which displays
fastening items, which remain in grip with the flat rod.
In a known device the flat rod is made out of a rear part and a carrier body with a butt
surface. At the butt surface (card clothing pick up port) a card clothing streak (flexible
card clothing) stretching in its longitudinal direction is fastened. The card clothing
streak covers a carrying item out of multiple number of textile layers in which a multiple
number of wire hooks (card clothing tips) is fastened. The card clothing streak is fixed
by means of two damps (cramps, clips) over the longitudinal sides of carrying body.
The clamps cover with their one end and the longitudinally directed border areas of card
clothing streak and engage with their other end is recesses of the carrying body. In
other practice the clamps are made out of a plate streak whose one longitudinal edge is
trust in the textile materials. The textile material of the card clottiing streak is fixed in
form fitting way during assembly under considerable stress .......
on the carrying body of flat rod. The clamps exercise
therein tensile strength in such a way that the textile
material is deformed in ball form away from the butt
surface, so that also the card clothing tips are arranged in
undesired way towards outside on a convex shaped hollow
curve. The such manufactured flat set has in non used
condition an exactness of 0.05mm. in height and flatness.
Through use the height differences in sat are increased to
about 0.2mm. Through resharpening of the card clothing on
the machine the exactness is only non-essentially improved.
After about 400t. fibre material input the flat clothing is
worn out such, that it must be changed. In order to
dismantle the plate cramps, ° the flat rod is clamped. With
lever and pincer the form fitting condition is undone. The
considerable forces at assembly and during dismantling
affect disadvantageously on the shape stability of the card
clothing. In addition, undesired tolerances enter in the
production of the flat rod clothing. In addition, undesired
tolerances enter in the production of the fJat rod bodies.
The mentioned disadvantages have the consequence that the
card clothing tips of the trimmed flat rods must be
overground (levelled).
It was already proposed (EP 0887445). that the butt part is
provided with two side walls standing out to "downwards".
The base is not directly at the butt part, but pasted at a
flexible strip wherein this strip has side parts, which work
together in the way of clip with the projections of the butt
part and through it fasten the card clothing streaks at the
profile. The side walls are consequently continued further to
downward, in order to protect the longitudinal edges of the
base. The manufacture of this flat rod is expensive from the
point of view of production technology and assembly.
Particularly, it is disturbing that the flexible strip can
not offer in the operation any sufficiently secure hold for
the card clothing streaks. Flexibility is the disadvantage,
which stands in the way of the important constant factor of
the distance of card clothing tips of the flat - and the
drum clothing. This defect leads to a non-uniform carding
effect and can bring up operation disturbance.
The assignment lies at the base of the invention in contrast
to this to procure a device of the type described at the
entry, which avoids the mentioned disadvantages, which in
particular makes possible in simple way a sturdily trimmed
flat rod and allows a simpler manufacture of flat rod and
chmnge of card clothing streaks.
The solution of this assignment takes place through *¦*»?
nlnnr-nnl^nri r-t^i r- f«ntiiT-ac nf tho r-ln^m 1, ThTOligh it, that the
carrier combined with the card clothing streaks is firmly
built and the fastening items at the carrier are guided
elastically, an operationally secure structure is obtained
which at the same time makes possible a simple change of
worn card clothing. The entire unit out of card clothing
streaks with card clothing and carrier with fastening items
in case of worn card clothing is released with little hand
grip by the carrying body and thrown away. A further
advantage exists therein that all. production tolerances of
flat rods, of card clothing and during the assembly
(including dismantling) are eliminated. With the flat rod
trimmed as per the invention, an addition of tolerances
during the assembly and dismantling of flat clothing, the
technologically harmful levelling grinding and the
deterioration of the exactness are effectively avoided
through use in advantageous way..
It shows :
Fiq.1 Schematic side view of a card with the device as
per invention.
Fig.2 trimmed flat rods, section out of a slide woy and
a flexible bend and distance between card clothinq
of the flat rods and drum clothinq.
Fig.3a side view in section of the flat rods with
longitudinal lots.
Fig.3b side view of a carrier.
Fig.3c side view in section through a card clothing
streak.
Fig.4 the flat rod with the device as per invention in
built up condition.
Fig.5 An execution shape with angularly formed end areas
and wall weakenings.
Fig.6 A further execution shape with a holding grip and
a well weakening.
Fig.7 A further execution shape with two holding grips
and engaging grip of end areas in the longitudinal
slots.
Fig.8 A further development with click or rather snap
conditions and
Fig.9 Side view and partly in section of the development
as per invention with an equipment: for alignment
of the flat rod for bringing up of a levelling
layer.
Fig,1 shows a card, as for example Truetzschler - High
output card DK 903, with feed roller 1, feed table 1, licker
iri 3a, 3b, 3c drum 4. doffing cylinder 5, stripping roller
6, squeeze roller 7.8, non-woven flece guide items 9, web
trumpet 10. withdraw rollers 11, 12, revolving flats 13 with
trimmed flat rods 14, can 15, and can coiler 16. the
direction of rotation of roller is shown with bent arrows.
With A the working direction is shown. The firm cording
items 33 ond 34 are assembled as oppositely lying to drum
filetting 4a,
As per Figure 2 on each side of the card side wise at
machine rack a flexible bend 17 is fixed, which shows
multiple number of adjustment screws. The flexible bend 17
shows a convex external surfoce 17a and an underside 17b.
Above the flexible bend 17 o slide way 20, as for example
out of slideble plastic is present which shows a convex
external surface 20a and a concave internal surface 20b. The
concave internal surface 20b rests on the convex external
surface 17a and slides on this in direction of arrow B, C,
Each flat rod, which can be built corresponding to the EP
0567747A1 comprises a rear part 14c and a carrying body 14b.
The carrying body 14b possesses a butt surface 14c, two side
surfaces 14d. 14e and two upper areas 14f, 14g (See Fig.3a).
Each flat rod 14 possesses at its both ends in each case a
flat top 14',14" (compare Fig.9) which covers in each case
two steel pins 14i' l4p or rather 143, 14, which are
fastened with a part in axial direction (see length 1 in
Fig.9) in recesses 14h, 14i of the carrying body 14b as for
example pasted. The parts of steel pin l4 142 (See Fig. 9)
projecting over the end faces of the carrying body 14b slide
on the convex external surface 20a of slide way 20 in
direction of arrow D. At the under surfoce of carrying body
14b the card clothing streak 18 is brought in. With 21 the
tip circle of the flat clothing 19 is denoted. The drum 4
shows ot it's circumference a drum fiilletlng ^o,ns for exampbe
saw tooth filetting. With 22 the tip circle of drum
filetting 4a is denoted. The distance between the tip circle
21 and the tip circle 22 is denoted with a and amounts to as
for example 3/1000, The distance between the convex external
surface 20a and the tip circle 22 is denoted with b. The
distance between the convex external surface 20a and the tip
circle is denoted with C. The radius of convex external
surface 20a is denoted with r, and the radius of tip circle
22 is denoted with rj* The radii rl and r2 intersect at
middle point M of the drum 4-,
As per 3a in carrying body 14b of the flat rod 14, which is
extruded out of aluminium over the breadth two longitudinal
slots 14k and 141 open towards outside are present (compare
Fig. J which extend to the centre of flat rod 14 towards
hollow cylindrical openings 14L and 14i. In the openings
14e, 14i the respective fastening area of flat pipe 14,/
142, ^^3' ^^4 ^* shown. The carrier 26 as per Fig.3b which
is extruded out of aluminium comprises of a holding item
26a and two fastening items 26b and 26c. The free end areas
26a2 and 260^ of holding item 26a are angled rectangularly
in different directions (26a2 against it and 260^ in cock
wise). The free end areas 26b2 and 26c2 of holding item 26b,
or rather 26c, are angled rectangularly in different
directions. They can also be angled in each case in a tip
angle (see figure 5 to 7). The carrier 26 is made out of a
material as a single piece. The fastening items 26b and 26c
cajy be brought up also in the holding item 26a, as for
example through laser welding. The fastening items 26b, 26c
and the holding item 26a can also comprise of different
materials.
The folded areas 26a2 and 2603 serve for additional holding
of carrying items 23 of card clothing streaks 18 (see also
figure 3c). Corresponding to figure 3c the card clothing
streak 18 comprises of card clothing tips 19(wire hooks) & a
carrying item 23 out of a textile material. The thickness of
carrying item 23 is denoted with f. The wire hooks 19 are
fastened with their one end through the surface 23" in the
carrying item 23. The other ends of the wire hooks 19, the
cnrd clothing tips, are free.
Figure 4 shows the flat rod 14 corresponding to the figures
3a to 3c in arranged condition. The card clothing streak 18
is fastened at one side 262 (the internal side) of the
carrier 26 as for example through paste. The other sides 26,
(the external side) of the carrier 26 and the carrying body
14-b bear against each other. The end areas 26b2 and 26c^ of
the fastening item 26b or rather 26c press on the upper
surfaces 15f or rather 14g of carrying body 14b through
which the carrier 26 is fastened with the card clothing
streak 18 at flat rod 14. Additionally to the items
represented in the figures 3a to 3c.. as per figure 4 between
the internal surfaces 26^ of the carrier and the carrying
item 23 an intermediate layer 24, as for example out of
hardened synthetic resin or the equivalent is assembled. The
readjustment layer 24 would equalise different distances
bet>.-.'een the flat rod 14, namely the butt surface 14c and the
flat clothing 19, namely the covering of free tips.
Corresponding to Figure 5 the free end areas 26b2f 26c2
(shoulders) in each case under a tip angle o<. in relation> to the associating holding items 26b^ or rather 26c, ore
arranged. Correspondingly in carrying body 14b, the upper
surface 14f, 14g are arranged.in each case in a tip angle A
in relation to the associated side surface 14d or rather
14e, The end areas of holdina items 26b or rather 26c,
turned away to the free end areas 26b2- 26c2 show a less
wall thickness e in comparison to the wall thickness d of
remaining parts of holdina items 26b, or rather 26c, that
means there exists a wall weakening 27a, 27b at both the end
areas. The weakening 27a, 27b stretches purposefully over
the entire breadth (see Mqure 9). Through it the fastening
items 26b and 26c are directed to the holding item 26a
elastically. They are out-and inward bendable in direction
of the arrow B, C and D, E (see figure 7). The holding items
26b, 26c show over the lugs 26b2, 26c2 °^®^ ^^'^ above in
each case an extension 28a or rather 28b with a free end,
which serves as hand grip for the in and outward bending of
fastening items 26b, 26c in the assembly and dismantling. On
the surface 26, two longitudinal, lugs 29a, 29b stretening
over the length are formed with which a distance between the
surfaces 26, and the butt surface 14c can be realised. The
lugs 26b2,, 26c2 rest elastically prestressed on the surfaces
14-f or rather 14-g.
As per figure 6 the lower tips oJ'Hi^ongitudinal slots 14k.
141 are formed under a tip angle/^ /. The angularly formed
lugs 26b2, 26c2 show at their tj^ ends thickening which
press down on the surfaces of lower lips of the longitudinal
slots 14k, 141 elastically. A handgrip 28b for out and
inward bending of fastening items 26c is present. First the
lug 26b2 is input in the slot 14k, followingly the lug 26c2
is brought in the slot 141 through snap combination, only a
weakening 27b is present in the holder 26c.
Fig.7 shows a formation similar as figure 6 however with two
h^d grips 28a, 28b and without thickening at the shoulders
28b2, ^^^'
As per figure 8a in the upper surfaces 14f and 14g in each
case groove Torming recesses 14m or rather 14n stretching
over the length of the flat rod 14 are present, which are
built one side wise opened and bend forming in the cross
section, as for example semi circle shaped or the
equivalent. As the figure 8b shpws, at the "upper side" of
the end areas 26b2f 26c2 (lugs) in each case noses 26b2 or
rather 26C3 stretching over the length of the holder 26 are
present which are formed lug type and bend forming in cross
section for example semi circle forming or the equivalent.
In arranged condition the noses 26b« and 26c/, remain in grip
with the corresponding recesses 14m or rather 14n in foi^
fitting condition. Therein the noses 26b2 and 26c-^ exert
pressure on the internol surfaces of the recess 14m or
rather 14n. For assembly the holding items 26b, and 26c are
prestressed in direction of the arrow B or rather D to
outward in consequence of weakenings 27a, 27b.
Therein at the same time olso the end areas 26b2 and 26c are
bent to "upward" in direction of arrow F or rather H.
Followinqly the holder 26 with it's surface 26, is set on
the butt surface 14c of flat rod 14. Thereafter the
holding items 26b, and26c, are moved in direction of arrow C
or rather E towards inside. Therein at the same time the end
areas 26b2 and 26c2 are bent in direction of arrow G or
rather I to "downward", wherein the noses 26b2 and 26cq rest
in the recess 14m or rather 14n. Through it, the holder 26
is firmly combined with the flat rod 14 and bolted.
In the dismontling of the holder 26 with the closed card
clothing 19 the working steps in the turned round sequence
take place.
The fastening of holder 26 at the flat rod 14 takes place
without additional fastening equipments like screws, clamps
and the equivalent. Therefore no additional separate
equipments for fastening, going over and obove the holder 26
and the integrated fastening items 26b, 26c are present,
iform fitting condition and elasticity are the physical
parameters, which determine the fastening system.
The single piece, component comprising of holder 26 and
fastening item 26b. 26c fulfills a double function, namely
the fastening of card clothing streak 18 at component and
the detachable fastening of component at flat rod 14.
As the Fig.9 shows/ between the flat pins l^if, ^^o ^"^^ °
flat plate 25 a square shapesi support item 27a with parallel
and flat surfaces are arranged between the flat pins 14.-,
H, and the plate 25, a further square shaped support item
27b of same Jieight is arranged locally fixed on the plate
25. With this device and (not represented) further sidewise
web items or the equivalent (for example displacable
bordering surfaces for the levelling layer 24 and /or the
carrier item 23). the card clothing tips 19 of card clothing
streak 18 can be positioned on the plate 25 and the flat rod
14 with the pins l^.,, ^'^9' ^^3' ^^4 °^® positioned in the
support items 27a, 27b. Followingly, between the carrier 26
and the carrying item 23, the levelling layer 24 is brought
inr This can take place as for example through castings^
injection, pr for example pasty levelling layer 24 distributes itself in
the intermediate space and fills it out equally.
WE CLAIM:


1. A device adaptable in a carding machine, the carding machine having a
roller with clothing, the device being arrange opposite the clothing on the
roller, the device comprising:
a flat bar;
a clothing strip; and
a rigid support connected to the clothing strip and having fastening
elements, the fastening elements engaging the flat bar, wherein the
fastening elements exert pressure on the flat bar and at least one of the
fastening elements has a weakened section as compared to the remaining
sections of the fastening element to facilitate elastic bending at the
weakened section.
2. The device as claimed in claim 1, wherein the fastening elements are
connected elastically to the support.
3. The device as claimed in claim 2, wherein the support engages the flat bar
through spring-back of the fastening elements.
4. The device as claimed in claim 3, wherein the fastening elements are held
in place through spring-back.
5. The device as claimed in claim 1, wherein the support can be disengaged
by bending the fastening elements m an outward direction.
6. The device as claimed in claim 5, wherein the support can be engaged by
bending the fastening elements inward.
7. The device as claimed in claim 6, wherein the fastening element
comprises an extension.
8. The device as claimed in claim 7, wherein the extension engages in a
projection of a shoulder on the flat bar.
9. The device as claimed in claim 8, wherein the extension elastically
engages in the projection of the shoulder.
10. The device as claimed in claim 9, wherein the extension is elastically
connected to the support.
11. The device of claim 10, wherein the extension is elastically connected to a
holder of the fastening element.
12. The device as claimed in claim 1, wherein the support has an essentially
beveled U-shaped profile in cross section.
13. The device as claimed in claim 12, wherein legs of the U-shaped profile
and the holders of the fastening elements are aligned.
14. The device as claimed in claim 13, wherein inside surfaces of the legs of
the U-shaped profile and longitudinal surfaces of the clothing strip are
located opposite each other.
15. The device as claimed in claim 1, wherein the fastening elements engage
in the flat bar via a snap-in connection.
16. The device as claimed In claim 1, wherein the fastening elements form
locking means.
17. The device as claimed in claim 1, wherein the support and the fastening
elements together form one piece made of the same material.
18. The device as claimed in claim 1, wherein the fastening elements extend
essentially over a length of the flat bar,
19. The device as claimed in claim 1, comprising a gripping portion extending
beyond at least one of the fastening elements in a direction away from
the clothing strip, the gripping portion being for gaining leverage to bend
the fastening element to remove the pressure exerted on the flat bar.
20. A device adaptable in a carding machine, the carding machine having a
roller with clothing, the device being arranged opposite the clothing on
the roller, the device comprising:
a flat bar a clothing strip; and
a rigid support connected to the clothing strip and having fastening
elements, the fastening elements engaging the flat bar,
wherein the fastening elements exert pressure on the flat bar,
the support can be disengaged by bending the fastening elements in an
outward direction,
the support can be engaged by bending the fastening elements inward,
each fastening element comprises an extension,
the extension elastically engages in a projection of a shoulder on the flat
bar,
the extension is elastically connected to the support,
the extension is elastically connected to a holder of the fastening element,
and
the elasticity is achieved through a weakened area of the holder of the
fastening element.


A device for a carding machine for cotton, synthetic fibers and the like,
comprising at least one flat bar with flat bar clothing attached thereto positioned
opposite the clothing of a roller, for example, a drum. The drum clothing is
attached to a support or carrier provided with fastening elements engaging the
flat bar. In order to make possible a stably trimmed flat bar (14) in a simple
way the flat bar (14) and change of card clothing strip (18), the support (26,
26a) connected to the card clothing strip (18) is rigidly built and the fastening
elements (26b, 26c; 26b2, 26C2) exert pressure on the flat bar (14b, 1ff, 14g;
140, 14p)

Documents:

136-KOL-2003-(13-08-2012)-FORM-27.pdf

136-kol-2003-abstract.pdf

136-KOL-2003-CLAIMS-1.1.pdf

136-kol-2003-claims.pdf

136-kol-2003-correspondence.pdf

136-kol-2003-description (complete).pdf

136-kol-2003-drawings.pdf

136-kol-2003-examination report.pdf

136-kol-2003-form 1.pdf

136-kol-2003-form 18.pdf

136-kol-2003-form 2.pdf

136-kol-2003-form 26.pdf

136-KOL-2003-FORM 27-1.1.pdf

136-KOL-2003-FORM 27.pdf

136-kol-2003-form 3.pdf

136-kol-2003-form 5.pdf

136-KOL-2003-FORM-27.pdf

136-kol-2003-granted-abstract.pdf

136-kol-2003-granted-claims.pdf

136-kol-2003-granted-correspondence.pdf

136-kol-2003-granted-description (complete).pdf

136-kol-2003-granted-drawings.pdf

136-kol-2003-granted-examination report.pdf

136-kol-2003-granted-form 1.pdf

136-kol-2003-granted-form 18.pdf

136-kol-2003-granted-form 2.pdf

136-kol-2003-granted-form 26.pdf

136-kol-2003-granted-form 3.pdf

136-kol-2003-granted-form 5.pdf

136-kol-2003-granted-priority document.pdf

136-kol-2003-granted-reply to examination report.pdf

136-kol-2003-granted-specification.pdf

136-kol-2003-granted-translated copy of priority document.pdf

136-kol-2003-priority document.pdf

136-kol-2003-reply to examination report.pdf

136-kol-2003-specification.pdf

136-kol-2003-translated copy of priority document.pdf


Patent Number 238088
Indian Patent Application Number 136/KOL/2003
PG Journal Number 04/2010
Publication Date 22-Jan-2010
Grant Date 21-Jan-2010
Date of Filing 04-Mar-2003
Name of Patentee TRUTZSCHLER GMBH & CO.KG
Applicant Address DUVENSTR. 82-92, D-41199 MONCHENGLADBACH
Inventors:
# Inventor's Name Inventor's Address
1 PFERDMENGES GERD WAAT NR.3 41363 JUCHEN
PCT International Classification Number D01G
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 10214391.9 2002-03-30 Germany