EP2628829B1 - Streckwerk zum Verziehen eines Vorgarns - Google Patents

Streckwerk zum Verziehen eines Vorgarns Download PDF

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Publication number
EP2628829B1
EP2628829B1 EP13000160.5A EP13000160A EP2628829B1 EP 2628829 B1 EP2628829 B1 EP 2628829B1 EP 13000160 A EP13000160 A EP 13000160A EP 2628829 B1 EP2628829 B1 EP 2628829B1
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EP
European Patent Office
Prior art keywords
cage element
rollers
spring
roller
stretching unit
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
EP13000160.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2628829A3 (de
EP2628829A2 (de
Inventor
Joachim Diedrich
Josef Winter
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 Components GmbH
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 Components GmbH filed Critical Saurer Components GmbH
Publication of EP2628829A2 publication Critical patent/EP2628829A2/de
Publication of EP2628829A3 publication Critical patent/EP2628829A3/de
Application granted granted Critical
Publication of EP2628829B1 publication Critical patent/EP2628829B1/de
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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
    • D01H5/46—Loading arrangements
    • D01H5/50—Loading arrangements using springs
    • 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
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • the invention relates to a drafting system for warping a roving according to the preamble of claim 1.
  • Draw frames for warping rovings are widely used in the textile industry and are used on various textile machines.
  • the work stations of ring spinning machines are equipped, for example, with drafting devices which draw a roving unwound from a flyer bobbin into a sliver of high fineness, which is subsequently provided with a twist and wound up as a finished yarn on a spinning cop.
  • Such drafting systems usually have three machine-length, driven by a machine end side drive at different rotational speeds, spaced arranged lower rollers, and each three associated, arranged on a pivotally mounted pendulum carrier top rollers.
  • the top rollers lie during the spinning operation with a predetermined contact pressure on the driven bottom rollers and are driven by these frictionally. That is, the upper rollers form with the associated lower rollers roller pairs, which ensure because of their different rotational speeds that the submitted roving is distorted when passing through the drafting system.
  • such drafting systems typically include an input, a center and an output roller pair, the area between the input and center roller pairs forms a so-called Vorverzugsfeld, while the area between the middle and the output roller pair acts as a main drafting field.
  • the supplied roving is warped in the drafting to the desired fineness and leaves the drafting at the nip of the pair of delivery rollers as a relatively wide, for example, up to 50 times warped sliver.
  • this relatively wide sliver is then acted upon by a spinning spinning cop in conjunction with an associated ring traveler of the relevant work site with spin rotation and thereby twisted into a finished yarn.
  • special compression devices are arranged between the pairs of output rollers and the pairs of delivery rollers, which can be designed, for example, as mechanical compressors or can operate pneumatically.
  • the output top rollers arranged in front of the compaction zone and the upper top delivery rollers arranged downstream of the compaction zone are mounted in a common cage element in such a way that the axes of the roller pairs are guided parallel to one another. That is, the cage element covered with a first axis guide means the axis of the top rollers at the side of the saddle, which in turn is arranged in a so-called output link of the pendulum carrier and held there by a saddle spring.
  • the output link is usually acted upon by a spring element so that the Ninoberwalzen rest with a defined contact pressure on the associated output lower rollers.
  • the delivery top rollers must also rest on the delivery bottom rollers with a specific loading force, since this is the only way to ensure that the compacted fibers are properly transported even in the area of the compression zone.
  • various methods or devices are known.
  • the cage element with a molded surface, which is arranged and designed so that the cage element in the installed state and with closed pendulum carrier on the underside of the output link supported. That is, the loading force introduced from the output link is transmitted to the cage member via the integrally formed surface and distributed to the output top rollers and the delivery top rollers at respective intervals.
  • a disadvantage of this known type of connection of delivery top rollers is, inter alia, that the output top rollers are often dug something out of their leadership and receiving device in the cage element, with the result that the top rollers are no longer exactly out, which in principle to a deterioration of the yarn quality leads.
  • Retrofitting of the known drafting systems for example by a significant increase in the maximum load force of the output link, brought no lasting success, since such a significant increase in the loading force not only led to settlement effects on the top rollers, which also has a negative effect on the achievable yarn quality, but also a defined setting of the optimal loading force of the top roller pairs very difficult.
  • the additional leaf spring can either, as in the DE 100 05 387 A1 described, be attached to the pendulum carrier of the drafting system, for example via a screw, or, as by the DE 10 2009 050 581 A1 known to be stationarily arranged on the cage element.
  • the present invention seeks to further develop a drafting system for warping roving so that always a constant loading force can be ensured during the spinning operation even with counting for the compression zone delivery top rollers.
  • the inventive construction in which the cage element has a first guide and receiving device, the lights Diameter slightly above the diameter of the axis of the pair of output rollers, on which the cage member is mounted and connected to the loading spring at one end stationary to the pendulum carrier of the drafting and in the region of its opposite, free end via a movable intermediate member with the delivery top rollers or the Morrisvorwalzen receiving cage member is connected, has the advantage that in this way a frictional bearing of the loading spring on the cage element can be largely prevented and ensured that the loading spring on the movable intermediate link quasi frictionless on the delivery top rollers or the cage element and thus also on the delivery top rollers transfers.
  • the light diameter is slightly greater than the diameter of the axis on which the cage member is mounted, which is therefore with some play on their associated bearing axis, it is also ensured that the cage element almost force-free order can pivot its bearing axis.
  • the intermediate member is designed as a rolling body, the is movably mounted in a guide device of the cage element.
  • movably mounted rolling body works not only during the spinning operation very reliable, but also represents a cost-effective component, which has a long life.
  • the loading spring is designed as an L-shaped bent leaf spring whose first leg is fixedly fixed to the pendulum carrier, while the second, free leg rests on a movable intermediate member.
  • Such a trained loading spring is on the one hand securely fixed in a predetermined mounting position and on the other hand in a simple manner so positioned that a quasi-friction transmission of the loading forces is given.
  • the loaded by the loading spring movable intermediate member is formed by the axis of the delivery top rollers, which is freely rotatably mounted in such a case in a second guiding and receiving device of the cage element.
  • Such a design has the advantage, for example, that the loading spring presses directly on the saddle piece of the axis of the top delivery roller pair; So the loading force does not have to take the detour via the cage element.
  • the arranged in the cage element guide and receiving means for the axis of Railoberwalzencrues of the cage element is designed as a fork guide whose longitudinal direction is approximately tangential to a circular path, which perform the delivery top rollers in an up and down movement around the Ninoberwalze ,
  • a fork guide whose longitudinal direction is approximately tangential to a circular path, which perform the delivery top rollers in an up and down movement around the Ninoberwalze .
  • a further advantageous embodiment is in particular also given when the axis of the delivery top rollers is acted upon by an L-shaped angled leaf spring, wherein the resting on the axis of the delivery top rollers free leg of the leaf spring in turn is angled twice.
  • the movable intermediate member is designed as a handlebar.
  • the handlebar is rounded in the region of its two end faces and is, limitedly movable and acted upon by a loading spring, in a recess of the cage element.
  • Such a handlebar which is rounded at both ends, also makes possible an almost hysteresis-free transmission of a constant loading force, preferably provided by a leaf spring.
  • Fig. 1 shown drafting device 1 has, as is known, via an input roller pair 2, a middle roller pair 3 and a pair of output rollers 4, wherein the pairs of rollers 2, 3, 4 are each formed by bottom rollers and associated top rollers.
  • the generally machine-length for example, by a machine end side arranged drive and a corresponding gear assembly with different rotational speeds driven lower rollers are mounted on (not shown) punching on the machine frame of the ring spinning machine, while the upper rollers which are frictionally driven by the lower rollers during the spinning operation, respectively are connected via so-called handlebars to a pendulum carrier 5, which in turn is fixed via a support 28 to a holding rod 12 fixed to the machine frame.
  • the pendulum carrier 5 can be positioned by means of an operating lever 6 in the positions “drafting system up” or “drafting system loaded”, with a third position “drafting relieved “adjusts when the upper rollers rest on the lower rollers without the operating lever 6 is in its closed position.
  • Such drafting units 1 have between the pair of input rollers 2 and the pair of output rollers 4, a draft zone 30 in which the supplied roving 26 is preferably warped up to 50 times its input length.
  • the drafting zone 30 is divided into the intermediate delay zone 7 lying between the pair of input rollers 2 and the middle roller pair 3 and the main drafting zone 8 located between the middle roller pair 3 and the pair of delivery rollers 4.
  • a compression zone 10 connects, which is located between the pair of output rollers 4 and the pair of delivery rollers 11.
  • the skilletoberwalzencru 4o is connected via a spring-loaded output link 9 to the pendulum carrier 5, that is, the axis 13 of the réelleoberwalzencrues 4o is secured with its saddle in a receptacle of the output link 9, preferably secured by a spring element.
  • a cage element 25 is arranged with a first guiding and receiving device 29 with play.
  • the cage member 25 has, in addition to the first guide and receiving means 29 for the axis 13 of Honoberwalzencrues 4o nor a second guide and receiving means 31 for the axis 17 of Dolphinoberwalzencrues 11o and a guide means 19 for a movable intermediate member 16.
  • the displaceably mounted in the cage member 25 in the guide means 19 intermediate member 16 is formed as a rolling body and is in the assembled state by the free leg 21 of an L-shaped loading spring 15 is applied, which is fixed with its second leg 20 stationary on the pendulum carrier 5 of the drafting system 1.
  • the Fig.2 shows a second embodiment of the pendulum carrier 5 a drafting 1 arranged delay zone 10th
  • a cage member 25 is also supported in this embodiment on the axis 13 of the réelleoberwalzencrues 4o with a first guide and receiving device 29, which in addition to the first guide and receiving device 29, a second guide and receiving device 31 for the axis 17 of Dolphinoberwalzencrues 11o has.
  • the clear diameter of the first guiding and receiving device 29 is also above the diameter of the axis 13.
  • the axis 17 acts as a movable intermediate member and is therefore freely rotatably mounted in the second guide and receiving device 31 of the cage member 25.
  • the freely rotatably mounted shaft 17 is acted upon by the free leg 21 of an L-shaped loading spring 15, wherein the free leg 21 is preferably angled twice.
  • the loading spring 15 is also fixed here with its second leg 20 on the pendulum carrier 5 of the drafting system 1.
  • the rotatable mounting of acting as an intermediate member 17 of the delivery roller upper pair 11o also allows an almost hysteresis-free transmission of the predetermined by the loading spring 15 loading force on the Kayoberwalzencru 11o, the respective effective load force is almost independent of the concentricity of the Underwalzenunterpases 11u.
  • the handlebar 18 has the front side each have a radius 23 and 24 and is limitedly movable in a recess 27 of the cage member 25 mounted.
  • the handlebar 18 is acted upon by the free leg 21 of an L-shaped loading spring 15, which is fixed with its second leg 20, similar to the embodiments described above, stationary on the pendulum carrier 5.
  • the movable arrangement of acting as an intermediate link arm 18 also reliably prevents that, in particular in a non-circular running of Kayunterwalzen 11u, may occur in connection with the work of the loading spring 15 to the occurrence of static friction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Exhaust Silencers (AREA)
EP13000160.5A 2012-02-17 2013-01-14 Streckwerk zum Verziehen eines Vorgarns Active EP2628829B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012003180A DE102012003180A1 (de) 2012-02-17 2012-02-17 Streckwerk zum Verziehen eines Vorgarns

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
DE102012003180 Previously-Filed-Application 2012-02-17

Publications (3)

Publication Number Publication Date
EP2628829A2 EP2628829A2 (de) 2013-08-21
EP2628829A3 EP2628829A3 (de) 2015-04-15
EP2628829B1 true EP2628829B1 (de) 2016-07-27

Family

ID=47563162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13000160.5A Active EP2628829B1 (de) 2012-02-17 2013-01-14 Streckwerk zum Verziehen eines Vorgarns

Country Status (8)

Country Link
EP (1) EP2628829B1 (ru)
JP (1) JP6120602B2 (ru)
CN (1) CN103255512B (ru)
DE (1) DE102012003180A1 (ru)
ES (1) ES2585249T3 (ru)
IN (1) IN2013MU00164A (ru)
RU (1) RU2620490C2 (ru)
TW (1) TWI631247B (ru)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015110691A1 (de) * 2015-07-02 2017-01-05 Maschinenfabrik Rieter Ag Aggregat für eine Ringspinnmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159395A1 (de) * 1981-04-06 1985-10-30 Maschinenfabrik Rieter Ag Verfahren für Spinnmaschinen zur Bearbeitung eines Faserbandes
DE19860201B4 (de) * 1998-12-24 2008-12-18 Maschinenfabrik Rieter Ag Vorrichtung zum Spinnen eines Fadens aus mehreren Fadenkomponenten
DE10005387A1 (de) 2000-02-07 2001-08-09 Stahlecker Fritz Vorrichtung an einer Spinnmaschine zum Verdichten eines Faserverbandes
DE10008130A1 (de) * 2000-02-22 2001-08-23 Stahlecker Fritz Vorrichtung an einer Spinnmaschine zum Verdichten eines Faserverbandes
DE10016655A1 (de) * 2000-04-04 2001-10-11 Stahlecker Fritz Druckwalzeneinheit für ein Streckwerk einer Spinnmaschine
AU2003200826A1 (en) * 2002-05-08 2003-11-11 Holding Fur Industriebeteiligungen Ag Drafting assembly for a ring spinning frame comprising a compressor for a fibre band
DE102008057667A1 (de) * 2008-04-24 2009-10-29 Wilhelm Stahlecker Gmbh Verdichtereinheit für ein Streckwerk einer Textilmaschine
DE102009050581A1 (de) 2009-10-24 2011-04-28 Oerlikon Textile Components Gmbh Compaktierungsaggregat für ein Streckwerk zum Verziehen von Stapelfasern
DE102010034314A1 (de) * 2010-08-13 2012-02-16 Wilhelm Stahlecker Gmbh Streckwerk und Trag- und Belastungsarm dafür
CN201924114U (zh) * 2011-01-14 2011-08-10 常德市恒天纺织机械有限公司 一种板簧摇架上罗拉握持机构

Also Published As

Publication number Publication date
TW201402894A (zh) 2014-01-16
DE102012003180A1 (de) 2013-08-22
IN2013MU00164A (ru) 2015-07-10
CN103255512A (zh) 2013-08-21
EP2628829A3 (de) 2015-04-15
JP6120602B2 (ja) 2017-04-26
RU2620490C2 (ru) 2017-05-25
CN103255512B (zh) 2017-04-26
ES2585249T3 (es) 2016-10-04
EP2628829A2 (de) 2013-08-21
RU2013106668A (ru) 2014-08-20
JP2013170345A (ja) 2013-09-02
TWI631247B (zh) 2018-08-01

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