EP3670718B1 - Ringspinnmaschine mit streckwerken - Google Patents

Ringspinnmaschine mit streckwerken Download PDF

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Publication number
EP3670718B1
EP3670718B1 EP19216767.4A EP19216767A EP3670718B1 EP 3670718 B1 EP3670718 B1 EP 3670718B1 EP 19216767 A EP19216767 A EP 19216767A EP 3670718 B1 EP3670718 B1 EP 3670718B1
Authority
EP
European Patent Office
Prior art keywords
ring spinning
spinning machine
bottom roller
roller
shaft
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.)
Active
Application number
EP19216767.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3670718A1 (de
Inventor
Herbert GRÄSSLE
Alexander Harnisch
Sebastian Moritz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Spinning Solutions GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Spinning Solutions GmbH and Co KG
Publication of EP3670718A1 publication Critical patent/EP3670718A1/de
Application granted granted Critical
Publication of EP3670718B1 publication Critical patent/EP3670718B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D01H5/82—Arrangements for coupling roller sections
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type

Definitions

  • the invention relates to a ring spinning machine with drafting systems which are formed by pairs of rollers which rotate at different rotational speeds and have machine-long lower roller strands which are formed by partly corrugated roller sections and are equipped with a length compensation device.
  • Ring spinning machines in which machine-long drafting arrangements are positioned both in the area of the machine front side and in the area of the machine rear side have been known for a long time and are in part described in great detail in numerous patent applications.
  • Such machine-long drafting arrangements have lower rollers, which are generally formed by machine-long lower roller strands, which in turn consist of a large number of roller segments connected to one another in a torque-proof manner.
  • upper rollers rest on the lower roller strands, which are taken along by the lower roller strands in a frictionally engaged manner and form pairs of rollers in connection with the lower roller strands.
  • the machine-long bottom roller strands are usually driven by a relatively powerful electric motor arranged at the end of the machine in a drive frame of the textile machine. B. ensures via an interposed reduction gear that the input, the middle and the output pairs of rollers rotate at different speeds and thereby distort the presented fiber material properly.
  • the middle roller pairs of the drafting system are also often equipped with so-called drafting aprons.
  • the lower roller strands of such drafting systems are usually also rotatably mounted in the area of so-called punches, with the input lower roller often being mounted on a carriage that is arranged on the punch so that it can be displaced in a defined manner so that the drafting width of the predrafting field is adjustable.
  • the bottom roller strands of the pair of middle rollers and the pair of output rollers are also often stored in corresponding storage devices on punches.
  • a ring spinning machine is known whose drafting system has a main drive on the machine input side and further auxiliary drives in the course of the lower roller strands.
  • This well-known, relatively expensive drafting system arrangement could not prevail in practice.
  • the US 949 504 A , the FR 752 786 A and GB 1 023 322 each disclose a connecting piece for rigidly connecting two roller segments. Due to the rigid connection, however, no linear expansion of the roller segments can be compensated.
  • the bottom roller strands of these drafting units In practice, in connection with ring spinning machines that have machine-long drafting units, it is widespread, for example, for the bottom roller strands of these drafting units to consist of two roller segments of approximately the same length, which in turn are composed of a large number of roller sections.
  • the two roller segments which are approximately the same length, are each connected to a drive at the end and are axially displaceable in the area of the center of the ring spinning machine via a so-called cylinder separation, but are not connected in a rotationally fixed manner.
  • a torque transmission from one roller segment to the other roller segment is not possible by means of such a cylinder separation.
  • the object of the invention is to create a ring spinning machine whose drafting systems are designed in such a way that the lower roller strands are not overstressed and damaged in the process, neither by torsion nor by elongation.
  • this object is achieved in that the length compensation devices connected to the lower roller strands are each designed and arranged in such a way that both length compensation and transmission of torque is possible with respect to the lower roller strands, with the length compensation devices comprising a compensation shaft and a receptacle, which form interlocking shaft-hub connections and the roller segments of the lower roller strands are each connected to the balancer shaft in an axially displaceable manner via the receptacle.
  • the design and arrangement of the length compensation devices according to the invention not only reliably ensures that the torques introduced into the lower roller strands by a drive during operation of the ring spinning machine are always transmitted over the entire length of the lower roller strands, but also ensures that, if necessary, the length compensation devices also immediately compensates for length expansions that occur in the area of the lower roll strands and are usually caused by heat.
  • the length compensation devices each comprise a compensation shaft and a receptacle, which form a positive shaft-hub connection, which preferably has a so-called P4C polygon profile.
  • P4C polygon profiles have, in contrast to the no notch effect compared to most conventional, axially displaceable profiles. This means that since a shaft with a P4C polygonal profile is only subjected to torsion, such polygonal shafts have e.g. For example, splined profiles have a fatigue strength that is almost 30% higher.
  • the balancing shaft is rotatably mounted in a lower roller bearing via a bearing sleeve.
  • the roller segments of the lower roller strands are each connected to the balancer shaft in an axially displaceable manner via the receptacle.
  • the Roller segments of the lower roller strands preferably each have a connecting piece with the receptacle.
  • Such an embodiment has the particular advantage that the affected roller segments of the lower roller strands are not only reliably connected in terms of drive via the compensating shaft of the length adjustment device according to the invention, but are also positioned securely and correctly via the bearing sleeve rotatably supported in a lower roller bearing.
  • the inventive design of the balancer shaft in conjunction with the associated receptacles of the roller segments of the lower roller strands also ensures that if z. B. heat-related changes in length of the roller segments of the lower roller strands should come, these are always immediately compensated by axial displacements between the balancer shaft and the recordings.
  • the connecting pieces with the receptacles are each fastened in one of the roller segments of the lower roller strands in a rotationally fixed manner by means of a press fit.
  • a very advantageous embodiment is also given when the lower roller bearing for the length compensation device is supported on a punch which is arranged approximately in the area of the machine center of the ring spinning machine.
  • Such a support ensures in a relatively simple manner that the roller segments of the lower roller strands are properly rotatably mounted over their entire length, in particular also in the area of the length compensation device.
  • the lower roller bearing is preferably designed in such a way that the bearing sleeve equipped with a balancing shaft can be inserted from above into the hinged lower roller bearing and locked there. Since the bearing sleeve can be positioned and fixed in the lower roller bearing at any time relatively easily and without great expenditure of time, such a design makes it possible to replace, for example, worn or damaged ones Lower roll strands considerably easier and simplified.
  • the length compensation device could in principle also be formed by a shaft-hub connection, the compensation shaft of which is designed as a splined shaft that corresponds to corresponding inner centering in the receptacles.
  • a length compensation device that has a multi-spline shaft has the not inconsiderable disadvantage that notch effects occur with multi-spline shafts, which in the long term have a negative effect on the fatigue strength of the length compensation device can.
  • a P4C polygon profile enables higher torque transmission compared to other form-fitting shaft-hub connections or can be made correspondingly smaller for the same torque.
  • a P4C polygonal profile enables the shaft and hub to be displaced particularly well in relation to each other under torque and centric load application. The distances between the length compensation devices or the lengths of the roller segments can thus be more than 60 meters.
  • the 1 shows a schematic, cross-sectional view of a ring spinning machine 1 whose drafting units 10 each have pairs of rollers 21, 22, 23, with the lower roller strands 21u, 22u, 23u each being equipped with a length compensation device 31 designed according to the invention.
  • the ring spinning machine 1 has a pedestal 2, from which vertical standpipes 3 extend upwards, which carry suction channels 4, which are preferably rectangular in cross section. Bridge pieces 5 are fastened to the standpipes 3, which in turn hold two parallel support tubes 6 running in the longitudinal direction of the machine, on which the bearing housings for a large number of ring spinning spindles 7 are fixed, on which spinning cops 8 are wound during the spinning operation.
  • the so-called punches 9 are fastened to two support tubes 11 extending in the longitudinal direction of the machine.
  • the lower strands of rollers 21u, 22u, 23u of the drafting units 10 are mounted on the punches 9, each of which has pairs of rollers 21, 22 and 23, which rotate at different speeds and thereby warp a template material 12.
  • the ring spinning machine 1 also has vertically arranged support columns 13 for a feed material gate 14.
  • feed bobbins 15 hang in the feed material gate 14, the feed material 12 of which is deflected via a deflection rod 24 or the like and drawn off by the drafting units 10.
  • a part of the movement mechanism 25 of the ring spinning machine 1 is also installed laterally next to the suction channels 4 . That is, in this area are the lifting devices for the ring rail 18, the balloon constriction rings 19 and the vertically displaceable mounted Thread guide 20 arranged.
  • a bobbin changing device 33 is installed on a boom 32 of the base frame 2 of the ring spinning machine 1, which consists essentially of several scissor systems with scissor arms, a gripper bar and tube grippers arranged on the gripper bar.
  • the scissor systems can be actuated by means of a push/pull tube that runs along the ring spinning machine 1 .
  • FIG. 2 shows a side view and on a larger scale of a drafting system 10 whose machine-long, drivable lower roller strands 21u, 22u and 23u are each equipped with a length compensation device 31 designed according to the invention.
  • a drafting system 10 whose machine-long, drivable lower roller strands 21u, 22u and 23u are each equipped with a length compensation device 31 designed according to the invention.
  • such drafting systems 10 have not only lower roller strands 21u, 22u and 23u but also upper rollers 21o, 22o and 23o, which rest on the lower roller strands 21u, 22u and 23u during spinning and are carried along by them in a friction-locked manner.
  • the lower roller trains 21u, 22u and 23u are mounted on punches 9, for example, via carriages 41, the precise installation position of the lower roller trains 21u, 22u and 23u, i.e. the distance between the carriages 41, being adjustable by means of corresponding screw bolts or the like.
  • the machine-long lower roller strands 21u, 22u and 23u are generally each composed of a large number of roller segment pieces which are each equipped with a structure 40 in the area of their working surfaces.
  • the bottom roller strands 21u, 22u and 23u are also, as in 3 shown, can be driven in a defined manner via a drive device 27 arranged at the end of the machine. That is, the sub-roller trains 21u, 22u and 23u are via a reduction gear 29, the z. B. is designed as a change-wheel drive, so connected to an electric motor drive 28 that the speed of the lower roller strands 21u, 22u and 23u can be predetermined.
  • Both the draft value of the pre-draft zone 35 located between the input roller pair 21 and the middle roller pair 22 and the draft value of the main draft zone 36 arranged between the middle roller pair 22 and the output roller pair 23 can be set in a defined manner via the speeds of the lower roller strands 21u, 22u and 23u.
  • a support 45 is fixed to the punch 9 via a holding rod 16, on each of which a pendulum support 26 and a loading arm 17 of the drafting system 10 are mounted.
  • the top rollers 21o, 22o and 23o of the drafting system 10 are mounted on the pendulum support 26 via corresponding holding elements (not shown) in pairs.
  • FIG. 3 shows a schematic plan view of the bottom roller strands 21u, 22u, 23u of the drafting units 10 of a ring spinning machine 1.
  • these lower roller strands 21u, 22u, 23u each consist of a large number of roller segments 34, 48, etc., which are connected to one another in a torque-proof manner.
  • the lower roller strands 21u, 22u, 23u are mounted at regular intervals in punches 9 and are driven by a drive device 27 which is arranged on the machine input side and which, e.g. B. via an electric motor 28, which is supplied from the network 44 with energy, and a reduction gear 29 has applied rotationally.
  • a drive device 27 which is arranged on the machine input side and which, e.g. B. via an electric motor 28, which is supplied from the network 44 with energy, and a reduction gear 29 has applied rotationally.
  • the lower roller strands 21u, 22u, 23u are positively and non-positively connected to one another by the interchangeable gear train of the reduction gear 29 .
  • a further drive device 46 is also arranged on the side of the ring spinning machine 1 opposite the drive device 27, the gearing 37 of which is also coupled to the lower roller strands 21u, 22u, 23u.
  • the transmission 37 which is intended to ensure that the speeds of the lower roller strands 21u, 22u, 23u remain precisely matched to one another, can also, as indicated, be acted upon by an electric motor 47.
  • the lower roller strands 21u, 22u, 23u are also each equipped, approximately in the area of the machine center 30 of the ring spinning machine 1, with length compensation devices 31 designed according to the invention.
  • This means that the length compensation devices 31 are designed and arranged in such a way that, with respect to the lower roller strands 21u, 22u, 23u, both a transmission of torques and a heat-related length compensation are possible.
  • FIG. 4 shows, in a slightly perspective view, the middle section of a lower roller strand 21u of a drafting system 10 of a ring spinning machine 1.
  • such a lower roller train 21u consists of a large number of roller segments which are connected to one another in a rotationally fixed manner before they are installed.
  • Such a lower roller strand 21u has, for example, as shown in FIGS Figures 3 to 6 shown, among other things via central roller segments 34, 48, between which a length compensation device 31 is switched on, which is designed according to the invention as follows.
  • the length compensation device 31 is in an advantageous embodiment, for example figure 5 can be seen from a balancer shaft 38, a bearing sleeve 39, a lower roller bearing 42 and connecting pieces 43.
  • the balancer shaft 38 which has a so-called P4C polygon profile and is preferably surface-hardened, is fixed in a bearing sleeve 39 when installed, which in turn can be rotated in a lower roller bearing 42 is positioned, which is mounted on a punch 9, which is preferably arranged approximately in the area of the machine center 30 of the ring spinning machine 1.
  • the balancer shaft 38 corresponds to connecting pieces 43, which in turn are fastened in the roller segments 34, 48, for example by means of a press fit.
  • the connecting pieces 43 each have a central, preferably likewise surface-hardened receptacle 49, which is adapted and matched to the P4C polygonal profile of the balancer shaft 38 in such a way that the 43 and thus the roller segments 34, 48 can be displaced axially on the balancer shaft 38 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Artificial Filaments (AREA)
EP19216767.4A 2018-12-19 2019-12-17 Ringspinnmaschine mit streckwerken Active EP3670718B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018132951.2A DE102018132951A1 (de) 2018-12-19 2018-12-19 Ringspinnmaschine mit Streckwerken

Publications (2)

Publication Number Publication Date
EP3670718A1 EP3670718A1 (de) 2020-06-24
EP3670718B1 true EP3670718B1 (de) 2023-04-19

Family

ID=68917750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19216767.4A Active EP3670718B1 (de) 2018-12-19 2019-12-17 Ringspinnmaschine mit streckwerken

Country Status (5)

Country Link
EP (1) EP3670718B1 (es)
JP (1) JP7458768B2 (es)
CN (1) CN111334905B (es)
DE (1) DE102018132951A1 (es)
ES (1) ES2946340T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4279645A1 (en) * 2022-05-17 2023-11-22 Kabushiki Kaisha Toyota Jidoshokki Fiber bundle condensing device of spinning machine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US949504A (en) * 1907-12-20 1910-02-15 E F Black Drawing-roll.
FR752786A (fr) * 1933-03-20 1933-09-30 Dispositif d'accouplement de plusieurs parties d'un arbre ou de pièces devant êtrejointes coaxialement
DE1237473B (de) * 1963-03-13 1967-03-23 Murrhardter Industrieanlagen G Streckwerkswalzenkupplung
DE1277724B (de) * 1963-09-21 1968-09-12 Zinser Textilmaschinen Gmbh Kupplung fuer Unterwalzen an Spinnereimaschinen
DE2029171A1 (en) * 1970-06-13 1971-12-16 Diirkoppwerke GmbH, 4800 Bielefeld Lower roller mounting in spinning machine drawing unit - - with access from above for easy roller dismantling and replacement
JPH0715784U (ja) * 1993-09-01 1995-03-17 村田機械株式会社 ドラフト装置の連結構造
DE102005054817A1 (de) 2005-11-15 2007-05-24 Saurer Gmbh & Co. Kg Ringspinnmaschine mit Streckwerken
US7937924B2 (en) 2005-11-16 2011-05-10 Lorica International, Inc. Fire retardant compositions and methods and apparatuses for making the same
DE102006007584A1 (de) * 2006-02-18 2007-08-30 Schaeffler Kg Nockenwellenversteller mit einem Überlagerungsgetriebe
DE102015010854A1 (de) 2015-08-19 2017-02-23 Saurer Germany Gmbh & Co. Kg Spinnmaschine mit einer Vielzahl nebeneinander angeordneter Streckwerke

Also Published As

Publication number Publication date
JP7458768B2 (ja) 2024-04-01
ES2946340T3 (es) 2023-07-17
CN111334905B (zh) 2022-04-19
JP2020100931A (ja) 2020-07-02
CN111334905A (zh) 2020-06-26
EP3670718A1 (de) 2020-06-24
DE102018132951A1 (de) 2020-06-25

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