EP0449073B1 - Streckwerk einer Feinspinnmaschine - Google Patents

Streckwerk einer Feinspinnmaschine Download PDF

Info

Publication number
EP0449073B1
EP0449073B1 EP19910104147 EP91104147A EP0449073B1 EP 0449073 B1 EP0449073 B1 EP 0449073B1 EP 19910104147 EP19910104147 EP 19910104147 EP 91104147 A EP91104147 A EP 91104147A EP 0449073 B1 EP0449073 B1 EP 0449073B1
Authority
EP
European Patent Office
Prior art keywords
condenser element
apron
drafting
input rollers
zone
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.)
Expired - Lifetime
Application number
EP19910104147
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0449073A1 (de
Inventor
Jürg Solenthaler
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0449073A1 publication Critical patent/EP0449073A1/de
Application granted granted Critical
Publication of EP0449073B1 publication Critical patent/EP0449073B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D01H5/72—Fibre-condensing guides

Definitions

  • the invention relates to a drafting system of a fine spinning machine with at least one apron warping zone and a compression element in the immediate vicinity of the pair of input rollers of the apron warping zone.
  • Such a drafting system for spinning machines is known for example from DE-A-33 27 966.
  • a drafting system is described there, with four pairs of rollers, the third of which forms an apron warping zone.
  • a sliver compressor which is resiliently attached to the loading arm for the top rollers.
  • the sliver compactor described above is arranged relatively close to the apron warping zone, but has the disadvantage that the compressed fiber sliver can spread again before entering the apron warping zone.
  • the above invention has now set itself the task of compacting a fiber sliver before entering a strap warping zone in such a way that the fiber sliver is introduced into the drafting system in such a narrow manner without still allowing subsequent fiber spreading.
  • the invention has the great advantage that the compaction element can now be arranged as close as possible to the draft zone without the compaction element being drawn between the feed rollers of the apron draft zone, so that these rollers are prevented from lifting from the outset.
  • the formation of spreading fibers is effectively prevented by the arrangement of the compression element according to the invention.
  • the drafting system according to the invention has proven itself above all as a so-called belt drafting system. Only the particularly tight guidance of the sliver in the clamping line of the apron warping zone enables a particularly uniform production of fine yarns in ring or false wire spinning. Further advantages of the invention follow from the subclaims.
  • FIG 1 two input rollers 1 and 2 of the input roller pair of an apron warping zone 3 are shown.
  • the apron warping zone 3 is formed by a short upper apron 4 and a long lower apron 5, the upper apron 4 being known to be deflected by an apron cage (not shown) and the lower apron 5 by a guide element 6 and further tensioning elements, not shown.
  • two exit rollers 7 and 8 are provided in the yarn running direction S.
  • a compression element or condenser 9 shown in partial section, is arranged directly in front of this pair of input rollers on the lower apron.
  • the pressing forces F A , F A 'applied by a load arm, not shown, along the nip line of the input rollers 1 and 2 are of the same size.
  • the forces acting on the compression element 9 from the rollers 1 and 2 are denoted by F1 and F2. They are composed of a normal force N and a frictional force consisting of the product ⁇ .N, where ⁇ is the coefficient of friction.
  • the angle ⁇ of the compression element 9 protruding into the wedge gap of the input rollers 1 and 2 now influences the forces acting on the compression element 9. If this angle ⁇ is large enough, the compression element 9 is prevented by the Input rollers 1 and 2 would be pulled in and push them apart.
  • the angle ⁇ should not be chosen too large so that the distance from the end of the compression element to the nip line of the input rollers 1 and 2 is still sufficiently small to introduce the sliver closely into the nip line.
  • FIG. 2 now shows schematically an apron warping zone 3 with the input rollers 1 and 2 and the compression element or condenser 9.
  • the running direction S of the sliver in the apron warping zone 3 makes an angle of 30 ° -90 ° with the horizontal, preferably between 40 ° and 75 ° . This ensures that the compression element 9 lying freely on the lower, longer strap 5 remains in place without further mechanical fastening by the force of gravity and the friction of the strap 5.
  • the distance a between the nip line of the input roller pair 1, 2 and the compression element 9 is as small as possible.
  • the contact surface of the compression element 3 can also, as shown in Fig. 3, an angle ⁇ with the tangential plane, i.e. with the thread running direction, greater than 90 °, a nose 10 projecting into the wedge gap between the input rollers 1 and 2 being provided.
  • FIG. 4 shows a similar apron warping zone 3, in which case a short lower apron 5 is provided.
  • the compression element 9 is connected via a rotatably movable fastening arm 11 to the machine frame 12 (only schematically indicated) (FIG. 4a).
  • the pivot point 13 can of course also be arranged somewhere else.
  • the fastening arm 11 can additionally be resiliently loaded with a spring 14 (FIG. 4b), or may only be fastened to the machine frame 12 with this spring 14 (FIG. 4c).
  • Fig. 5 shows a further variant, wherein the compression element 9 is slidably mounted on a rigid mounting plate 15 on the machine frame 12. Due to the dead weight G, the compression element 9 is pressed into the wedge gap of the input rollers 1 and 2.
  • FIG. 6 now shows a first embodiment of the compression element 9. It consists of a cylindrical shell 16 with a radial groove 17 running in the running direction of the fiber sliver , or forms a flat surface 18. On the underside of the shell 16, two cams 19 are provided so that the compression element 9 remains centered on the strap.
  • FIG. 7 shows a second embodiment variant of the compression element 9. It consists of two wedge-shaped side parts 20 which form a wedge gap 21 which merges into a slot. The side parts 20 are connected in one piece to a cross part 22 towards the input rollers (in the thread running direction S). At the rear end of this compression element 9, two triangular cams 23 are also provided so that the element remains centered on the strap. 7a shows the same element 9 from the input rollers.
  • FIGS. 8 and 8a A third embodiment of the compression element 9 is shown in FIGS. 8 and 8a.
  • This consists of two wedge-shaped prism-like side parts 24, which are integrally connected to a base plate 26 provided with a hump 25. These side parts 24 also form a wedge gap 27 which merges into a slot 28. Furthermore, as in FIG. 7, two triangular cams 29 are provided in order to center the compression element 9 on the lower apron.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP19910104147 1990-03-22 1991-03-18 Streckwerk einer Feinspinnmaschine Expired - Lifetime EP0449073B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH942/90 1990-03-22
CH94290A CH681547A5 (enrdf_load_stackoverflow) 1990-03-22 1990-03-22

Publications (2)

Publication Number Publication Date
EP0449073A1 EP0449073A1 (de) 1991-10-02
EP0449073B1 true EP0449073B1 (de) 1994-04-27

Family

ID=4198764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910104147 Expired - Lifetime EP0449073B1 (de) 1990-03-22 1991-03-18 Streckwerk einer Feinspinnmaschine

Country Status (3)

Country Link
EP (1) EP0449073B1 (enrdf_load_stackoverflow)
CH (1) CH681547A5 (enrdf_load_stackoverflow)
DE (1) DE59101478D1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230317C2 (de) * 1992-09-10 1998-07-23 Rieter Ag Maschf Doppelriemchenstreckwerk für eine Spinnmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB590135A (en) * 1945-04-13 1947-07-09 Casablancas High Draft Co Ltd Improvements in or relating to condensers or reducing devices for drafting mechanismfor textile fibres
GB669948A (en) * 1949-09-27 1952-04-09 Tmm Research Ltd Improvements relating to textile spinning machines
GB682208A (en) * 1950-03-25 1952-11-05 Ambler Superdraft Ltd Improvements in apparatus for drafting textile fibres
DE3327966A1 (de) * 1983-08-03 1985-02-21 Fritz 7347 Bad Überkingen Stahlecker Streckwerk fuer spinnereimaschinen

Also Published As

Publication number Publication date
EP0449073A1 (de) 1991-10-02
CH681547A5 (enrdf_load_stackoverflow) 1993-04-15
DE59101478D1 (de) 1994-06-01

Similar Documents

Publication Publication Date Title
EP0626472B2 (de) Vorrichtung zur Messung der Stärke eines Faserverbandes mit einer Bandführung zum Führen der Faserbänder am Streckwerkseinlauf
EP1953275B1 (de) Streckwerk mit Verdichtungszone
DE3878573T2 (de) Vorrichtung und verfahren zum verstrecken textiler faserbaender.
DE19631638A1 (de) Pressenanordnung
WO2015068005A1 (de) Streckwerk mit einem druckelement
DE3327966C2 (enrdf_load_stackoverflow)
EP0449073B1 (de) Streckwerk einer Feinspinnmaschine
AT501434A1 (de) Vlieszuführvorrichtung
DE10058892A1 (de) Vorrichtung an einer Spinnmaschine zum Verdichten eines Faserverbandes
DD153143A5 (de) Abzugsvorrichtung fuer flachstrickmaschinen
CH680374A5 (enrdf_load_stackoverflow)
DE10214339A1 (de) Streckwerk für eine Spinnereimaschine
EP0099973B1 (de) Streckwerk für eine Spinnmaschine
DE19756393C2 (de) Spinnereimaschinen-Streckwerk
DE1293661B (de) Spindelantrieb fuer Spinn- und Zwirnmaschinen
WO2002034976A1 (de) Transportband zum transportieren eines zu verdichtenden faserverbandes
DE19807895B4 (de) Spinnmaschine mit progressiv wirkendem Streckwerk
EP3724382A1 (de) Streckwerk für eine spinnmaschine mit einer verdichtungsvorrichtung
EP0008659A1 (de) Verfahren und Vorrichtung zum Abliefern, Abnehmen und Zusammenfassen eines Faserflors
DE10012019A1 (de) Streckwerk für Spinnmaschine
CH360932A (de) Doppelriemchen-Streckwerk für Spinnereimaschinen
DE959446C (de) Streckwerk fuer Spinnereimaschinen
CH696072A5 (de) Vorrichtung zum Verfestigen eines förderbaren Faservlieses.
DE19840023A1 (de) Pressenanordnung
CH687927A5 (de) Doppelriemchenstreckwerk fuer eine Spinnmaschine.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910708

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

17Q First examination report despatched

Effective date: 19930917

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940427

REF Corresponds to:

Ref document number: 59101478

Country of ref document: DE

Date of ref document: 19940601

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940711

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950211

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950213

Year of fee payment: 5

Ref country code: CH

Payment date: 19950213

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960318

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960331

Ref country code: CH

Effective date: 19960331

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960318

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19961203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050318