Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
  • D01G19/00—Combing machines
  • D01G19/06—Details
  • D01G19/10—Construction, mounting, or operating features of combing elements
  • D01G19/105—Combing cylinders

Definitions

• the invention relates to a Kammgarnitur for a rotatable about an axis of rotation Kämmwalze a textile machine, in particular a combing machine and in particular for a circular comb.
• Combers are known from the CH 673 290 A5 and the
• a circular comb includes one Worktop, which is arranged perpendicular to a rotation axis of the circular comb on a combing roller.
• the combed clothing has a plurality of comb segments arranged one behind the other in the direction of rotation of the combing roller.
• each comb segment has a plurality of axially juxtaposed sawtooth stamped parts with a foot part and extending from the foot part teeth, wherein the configuration of the teeth of the comb set changes in the direction of rotation in order to influence a combing effect achieved thereby.
• Such combs are known from DE 43 26 205 C1 and EP 1 083 250 B1, wherein a worsted has in addition to an engagement comb segment a plurality of follower comb segments, each of which produces a higher combing effect than the preceding follower comb segment or the engagement comb segment.
• EP 1 341 952 B1 furthermore shows a comb set for a combing roller, wherein the configuration of teeth of the comb set changes in the opposite direction to the direction of rotation, so that the combing action increases.
• the combing result is improved, but on the other hand, yarn defects of the further processed fiber material can not be ruled out.
• a combed clothing is known, which has at least partially pinstrip, which are attached to a support member. Further clothing elements for a circular comb are described in EP 1 533 404 A1.
• a comb assembly comprises at least a first and a second comb segment region, wherein a configuration of teeth within the first comb segment region changes such that a combing action of the teeth against a direction of rotation increases and the teeth are configured within the second comb segment region in that the combing action within the second comb segment region is smaller than at the end of the first comb segment region opposite to the direction of rotation.
• the second comb segment region can also comprise a plurality of comb segments.
• a comb segment according to claim 6 may have different combing effects of the teeth in different comb segment areas.
• a worsted fabric according to claim 7 By designing a worsted fabric according to claim 7, the reduction of the combing effect and thus the reduction of a tensile force acting on the fiber at the exit of the fiber from the circular comb, so that a relief of the fiber before a subsequent soldering process takes place is guaranteed. Thus, possible errors in the soldering can be avoided.
• toothless intermediate discs makes it possible to selectively adjust the free passage between axially adjacent teeth and also the number of teeth provided in the axial direction.
• Fig. 1 is a side view of a Kammgarnitur with a first and a second Kammsegment Scheme;
• Fig. 2 is a similar to FIG. 1, enlarged view of
• Teeth of a comb segment to illustrate parameters for configuration measures
• 3 to 6 are side views of different embodiments of a comb segment for the second comb segment area
• FIGS. 7 to 10 are diagrams with illustrations of parameters for configuration measures for changing the combing effect of the combed clothing of the invention over the prior art.
• a combed clothing 1 of a circular comb of a textile combing machine shown in FIG. 1 comprises a first comb segment region 2 and a second comb segment region 3.
• the two comb segment regions 2, 3 are arranged one behind the other in a direction of rotation 4 of a combing roll (not shown) and through in the direction of a rotation axis 4a Kämmwalze juxtaposed sawtooth stamping parts 5 formed with a foot part 6 wegerrangenden teeth 7.
• the SAge leopardstanzmaschine 5, are also referred to as toothed discs or dental leaflets. It is also possible to produce the toothed disks from sawtooth wire.
• the lined sawtooth punches 5 are axially, spaced from one another positionable. These washers are optional.
• the sawtooth punched parts 5 can also be arranged axially directly adjacent to one another.
• the sawtooth stamped parts can also have shoulder embossments in the axial direction, so that the sawtooth stamped parts, despite an adjoining arrangement, have intermediate distances in the axial direction.
• the first comb segment region 2 comprises four comb segments 8; However, it is also conceivable that the first comb segment region 2 has more or less than four comb segments 8, but at least one comb segment 8.
• the comb segment 8 is also referred to as a bolt, wherein the bolt of the second comb segment region 3 is referred to as the end bolt, since it is arranged in the direction of rotation 4 at the end 9 of the combed clothing 1.
• the bolt of the second comb segment region 3 is referred to as the end bolt, since it is arranged in the direction of rotation 4 at the end 9 of the combed clothing 1.
• the intervention of the circular comb takes place in the material to be combed.
• the comb segment 8 arranged at the beginning 10 is therefore also referred to as an engagement comb segment.
• the engagement of the circular comb in a Kämmwatte and the subsequent rotation of the circular comb in the direction of rotation 4 represent the combing.
• the direction of rotation 4 is therefore also referred to as Kämmcardi and the effect caused thereby on the Kämmwatte as Kämmrial.
• the first comb segment region 2 has a configuration of the teeth 7 such that the combing action of the teeth 7 increases counter to the direction of rotation 4.
• the increase in the combing effect of the teeth 7 is achieved by configuration measures, which will be explained below.
• the teeth 7 are within the second comb segment region 3 configured such that the combing effect within the second comb segment region 3 is on average less than at one seen in the direction of rotation 4 end 11 of the first comb segment region 2.
• the two comb segment regions 2, 3 abut each other at a common boundary 12. It is conceivable that the configuration of the teeth 7 at the boundary 12 changes.
• the Kammgarnitur 1 is shared with the foot 6 of the comb segments 8 attached to the combing roller.
• each foot part 6, a connecting element 13, which cooperates in each case with a complementary thereto formed connecting element of the combing roller.
• the connecting elements 13 can be designed as bores, in particular as through-holes, but also as grooves, in particular as dovetail-shaped grooves.
• the Kammgarnitur 1 may be glued to the Kämmwalze 8 with the foot parts 6 of the comb segments.
• the combed clothing shown in Fig. 1 with the five comb segments 8 extends over a clothing circumference angle of 111 °, since this, in particular for the combing of cotton, has proved to be advantageous.
• this clothing circumference angle allows to improve the manufacturing accuracy of the comb segments 8, each having an identical segment circumferential angle W, so that the foot portions 6 of the comb segments 8 are identical.
• the comb segments can also have different sized foot parts with different segment circumferential angles W. It is also conceivable Kämmgarituren with clothing circumferential angles of 78 °, 87 °, 90 °, 98 ° and 112 °.
• a tooth height H is defined between a notional upper edge 14 of a foot region 6 and an outer envelope 15 of the tooth tips 16 of the teeth 7.
• a tooth spacing T is the distance between two teeth 7 adjacent in the direction of rotation 4. The tooth spacing T is also referred to as tooth pitch .
• An engagement angle E is included by a front tooth flank 17 and a radial direction R.
• a free passage D is the free surface between two teeth 7 and two stakege leopardstanz tone 5, which are arranged axially adjacent within a comb segment 8 in the direction of the axis of rotation 4a of the combing roller. The free passage D is not shown in Fig. 2, since it extends perpendicular to the plane of the drawing.
• a specific peak number Z also peak density Z, characterizes a portion of a cylindrical surface of the circular comb, which engages in the Kämmwatte, on the entire cylinder surface area, which is predetermined by the envelope 15.
• the peak density Z thus results both from the tooth spacing T measured in the circumferential direction and an axial tooth spacing measured along the rotation axis 4a, which results from an expansion of the sawtooth punching part 5 in the axial direction, as well as from a thickness an intermediate disc which can be arranged between two sawing parts 5.
• the peak density Z is therefore a surface-related quantity.
• At least one of the configuration measures such as a reduction in the tooth height H, reduction of the free passage D between two adjacent teeth 7 in the direction of the rotation axis 4a, reduction of the tooth spacing T between two adjacent in the direction of rotation 4
• increasing the meshing angle E and increase the peak density Z At least one of the configuration measures such as a reduction in the tooth height H, reduction of the free passage D between two adjacent teeth 7 in the direction of the rotation axis 4a, reduction of the tooth spacing T between two adjacent in the direction of rotation 4
• At least one of the configuration measures such as increasing the tooth height H, increasing the free passage D, increasing the tooth spacing T, reducing the tooth engagement angle E and reducing the tip density Z achieves a reduced combing effect of the teeth 7 of the comb segment 8.
• the combing action of the teeth 7 is counter to the direction of rotation 4 within the first comb segment region 2. decreases and is at least less within the second comb segment region 3 than at the end 11 of the first comb segment region 2 seen in the direction of rotation (see Fig. 1). It is also possible to configure the teeth 7 within the second comb segment region 3 in such a way that the combing action of the teeth 7 decreases counter to the direction of rotation 4. This is also possible if the second comb segment region 3 comprises only a single comb segment 8, that is, the combing effect within the comb segment 8 is achieved by a configuration of the teeth 7 changing in the direction of rotation 4.
• either a stepwise change of the combing effect can be achieved by using comb segments 8 with different combing effects or a stepless, continuous change of the combing effect by using comb segments 8 with a changing combing effect within the comb segment 8.
• a continuous change of the combing effect within the combed fabric 1 is conceivable.
• FIGS. 3 to 6 show exemplary embodiments of a comb segment 8 for the second comb segment area 3, that is to say an end bar, since a reduced combing effect within the comb segment 8 is achieved by the configuration measures shown.
• FIG. 3 shows a first exemplary embodiment of a comb segment 8.
• the comb segment 8 has a first comb segment part 18 and a second comb segment part 19, which are arranged one behind the other in the direction of rotation 4 and connected in one piece with each other.
• the teeth 7 within the first comb segment part 18 have a first tooth engagement angle El and the teeth 7 have a second tooth engagement angle E2 within the second comb segment part 19, where El> E2.
• the combing action within the first comb segment part 18 is increased relative to that of the second comb segment part 19.
• the reduction of the meshing angle E of El counter to the direction of rotation 4 to E2 is not effected by a single step transition within the comb segment from the first comb segment part 18 to the second comb segment part 19, but in several stages or continuously.
• the comb segment 8 has additional comb segment parts.
• the first comb segment part 18 has a length L1
• Fig. 4 shows a further embodiment of a comb segment 8.
• both the tooth spacing T1 and the tooth height H1 are reduced within the first comb segment part 18 compared with the corresponding values of the second comb segment part 19 T2, H2.
• transitions of the tooth height H and the tooth spacing T occur at the boundary between the first It is also conceivable that the change of the tooth height H and the change of the tooth spacing T do not take place at one and the same point, so that the comb segment 8 has further comb segment parts, the transition from T1 on T2 and / or from Hl to H2 against the direction of rotation 4 within the comb segment 8 in several stages and / or takes place continuously.
• Fig. 5 shows another embodiment of a comb segment 8.
• Components corresponding to those discussed above with reference to Figs. 1 to 4 bear the same reference numerals and will not be discussed again in detail.
• the comb segment 8 shows a combination of the configuration measures shown in FIGS. 3 and 4.
• the second comb segment part 19 has an increased tooth height H2, an increased tooth spacing T2 and a reduced tooth engagement angle E2, so that in the second comb segment part 19 the combing effect of the teeth 7 is reduced relative to the first comb segment part 18.
• the changes in the tooth height H, the tooth spacing T and the tooth engagement angle E do not take place at one and the same point in the comb segment 8, so that further comb segment parts result. It is also possible for a change in each of the named parameters within the comb segment 8 to take place in several stages or continuously.
• Fig. 6 shows another embodiment of a comb segment 8. Components corresponding to those described above with reference to Figs Figs. 1 to 5 have been explained, bear the same reference numerals and will not be discussed again in detail.
• the teeth 7 are configured such that the tooth height Hl, the tooth pitch Tl, the tooth engagement angle El and the tip density Zl not shown are constant.
• the continuous transition from the parameters H1, T1, E1 and Z1 at an end of the first comb segment part 18 seen in the direction of rotation 4 to the end variables of the parameters H2, T2, E2 and Z2 at the end 20 takes place via a plurality of intermediate stages Hi, Ti, Ei and Zi, of which an intermediate stage in Fig.
• the parameters meshing angle E, tooth height H, tooth pitch T and peak density Z are shown in diagrams as a function of a circumferential angle for a further exemplary embodiment of a combed garniture which extends over a clothing circumferential angle of 90 °.
• the mentioned parameters for a worsted in accordance with EP 1 083 250 B1 are represented by the curve 21, a worsted according to EP 1 341 952 Bl by the curve 22 and the worsted by the curve 23 comparatively. It can equally be seen from the diagrams of FIGS.
• the meshing angle E has in Endriegel in about the same value as at the beginning of the worstge in the direction of rotation.
• the tooth engagement angle E can also be greater in the end lock, in particular 50% greater than the value at the beginning of the worsted in the direction of rotation.
• the peak density Z is reduced as shown in FIG. 10 in Endriegel to about 50% of the peak density at the end of the first comb segment region in the direction of rotation. Correspondingly, it can be seen from the diagrams in FIGS.
• the tooth height H and the tooth spacing T increase in the end bar at a circumferential angle of at least 76.5 ° after a reduction relative to their values in the end bar within the first comb segment area.
• the tooth height H in the end bar assumes the initial value of the tooth height H at the beginning of the worsted, after the value at the beginning of the end bar has been reduced by about 30% compared to the initial value.
• the value of the tooth height H in the end bar can also be above or below the initial value.
• the tooth spacing T is approximately doubled in the end bar in relation to a value at the end of the first comb segment area, counter to the direction of rotation, where a smallest value of the tooth spacing within the comb set is present.
• the free passage D is not increased to reduce the meshing effect of the teeth within the end bar. D remains constant along the worsted pattern for the diagrams shown. It is also possible to make the free passage D variable along the Kammgarnitur by a large value for the free passage D is selected, for example, at the first bar at the beginning of the worsted. Contrary to the direction of rotation 4, the free passage D is then continuously reduced, wherein the free passage in the region of the end bar can also rise again.
• the curves 23 of the parameters E, Z, H and T in FIGS. 7 to 10 further show that in the inventive worsted the parameters within the first comb segment are continuously changed along the clothing circumference angle, so that a continuous, harmonic transition of the Combination between the comb segments is guaranteed.
• the curve 21 of the known from the prior art Kammgarnitur a gradual or staircase-shaped course of the parameters by their sudden transitions between the comb segments.
• the worsted fabric according to the invention exhibits an increased combing effect in the first comb segment area compared to known comb fabrics.
• the increased combing action is based, in particular, on an increase of the tooth engagement angle E by about 20% to 50% and on an increase in the peak density Z of about 10% to 30% in comparison to the fillets according to EP 1 083 250 B1 and EP 1 341 952 B 1.
• this increased combing effect is only possible by the subsequent, above-described reduction of the combing effect in the Endriegel, the smooth transition of the material to be combed from the
• Combing ensures the subsequent soldering process.
• An unchanged high combing effect on the end bar would lead to errors in the soldering process and thus to faulty yarn.
• the reduction of the combing action at the end bar of the worsted of the invention allows higher maximum values of the combing action within the first comb segment area over the prior art, so that the integral combing effect of the combed garniture according to the invention despite the reduced combing action on the end bar with the integral combing effects known from the prior art Kammgarnituren is comparable, but significantly higher speeds of the circular comb of, for example, more than 500 combing cycles per minute are possible.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Preliminary Treatment Of Fibers (AREA)

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• 2009
  • 2009-07-10 DE DE200910032799 patent/DE102009032799A1/de not_active Withdrawn
• 2010
  • 2010-06-23 EP EP10727409.4A patent/EP2452000B1/de active Active
  • 2010-06-23 WO PCT/EP2010/058922 patent/WO2011003743A1/de active Application Filing
  • 2010-06-23 JP JP2012518875A patent/JP5449547B2/ja active Active
  • 2010-06-23 CN CN201080039183.8A patent/CN102482805B/zh active Active

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