EP0437472B1 - Fadenspeicher- und -liefervorrichtung - Google Patents

Fadenspeicher- und -liefervorrichtung Download PDF

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Publication number
EP0437472B1
EP0437472B1 EP89911055A EP89911055A EP0437472B1 EP 0437472 B1 EP0437472 B1 EP 0437472B1 EP 89911055 A EP89911055 A EP 89911055A EP 89911055 A EP89911055 A EP 89911055A EP 0437472 B1 EP0437472 B1 EP 0437472B1
Authority
EP
European Patent Office
Prior art keywords
thread
storage
delivery apparatus
sintered
guide
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
EP89911055A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0437472A1 (de
Inventor
Alf Bengtsson
Pär JOSEFSSON
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.)
Iro AB
Original Assignee
Iro AB
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
Priority claimed from DE3836833A external-priority patent/DE3836833A1/de
Application filed by Iro AB filed Critical Iro AB
Priority to AT89911055T priority Critical patent/ATE94594T1/de
Publication of EP0437472A1 publication Critical patent/EP0437472A1/de
Application granted granted Critical
Publication of EP0437472B1 publication Critical patent/EP0437472B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/24—Guides for filamentary materials; Supports therefor with wear-resistant surfaces
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/366—Conical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a thread storage and delivery device of the type specified in the preamble of claim 1.
  • the thread In the case of thread storage and delivery devices, the thread should be treated as gently as possible on its thread path through the device and subjected to the lowest possible frictional loads if it comes into contact with components of the device several times, some of the components of the device rotating relative to the running thread, the thread is taken along and deflected, or rotates relative to stationary components, oscillates, is accelerated jerkily and decelerated and is moved between spaced guide surfaces to form a balloon. Where contacts of the thread are to be expected, thread guiding surfaces are usually provided which are coated with ceramic sintered material or consist thereof. To this day, conventional abrasion-resistant sintered material is used.
  • Thread breaks occur predominantly between the feed area and the storage element of the thread storage and delivery device, ie where there is usually a deflection of the thread, coupled with friction. So that the assumption is obvious that there is a connection between the frequency of the thread breaks and the thread guide surfaces as well as the effect of the thread guide surfaces on the thread.
  • Such a thread storage and delivery device is known from CH-A-62 46 44.
  • a first, ring-shaped thread guide element is arranged in the inner end of the winding element designed as a tube.
  • Another thread guide body with a thread guide surface deflecting the thread over a large deflection angle is attached in the outer end of the tube.
  • the thread guide bodies are made of ceramic material.
  • molded parts for guiding textile or metallic threads which consist of 0.05 to 2.0 mm coarse, spherical hard material particles and a plastic which binds the particles to prevent wear by minimizing the effects of friction.
  • the invention has for its object to provide a thread storage and delivery device of the type mentioned, with which the frequency of the thread breaks can be reduced.
  • the object is achieved by the im characterizing part of claim 1 specified features.
  • the sintered part forming the thread guide body or the thread guide surface is produced in a very specific way, namely by an isostatic hot-press sintering process in an encapsulation.
  • This requirement plays a role both with the choice of hard material and alone.
  • the isostatic hot press sintering in a capsule shell prevents foreign substances or substances which are detrimental to the mechanical or thermal properties from penetrating into the raw sintered mass and from impairing the excellent sliding properties of the surface of the sintered molded part. Possible small grain sizes of around 1 micron make an important contribution to the excellent sliding behavior of the hard materials used.
  • Molded parts made of hard material sintered material produced by hot isostatic pressing in an encapsulation are used in various fields of technology when high mechanical loads in combination with strong thermal loads (high temperature range) occur.
  • high-density hard material sintered parts are used for turbine blades, combustion chamber linings, nozzles, pump parts, valve seats, cutting tool inserts, rolling elements for rolling bearings, components for impact mills, and the like. Purposes in which neither the high mechanical strength nor the high-temperature strength play a role are not known for hard material sintered molded parts produced by hot isostatic pressing in an encapsulation.
  • the choice of hard material also plays an important role for the excellent sliding properties of the thread guiding surfaces and thus for the low friction loads on the thread.
  • High-density sintered material with a main component of carbide, nitride and / or carbonitride hard materials of the specified group of elements shows, in addition to the secondary hardness and shape retention, which are secondary for the application concerned here, excellent sliding properties on the threads exposed surface, provided it is made in an encapsulation by an isostatic hot press process.
  • the special purpose of the high-density hard-material sintered molded parts produced by isostatic hot pressing in an encapsulation is welcomed as a secondary aspect, the high abrasion resistance and the high mechanical strength, because due to these manufacturing and material-related advantages, the thread guide surfaces even after long service life and with abrasive Threads are not subject to noticeable wear and tear, and because the thread guide bodies can be designed to be delicate and therefore light, which - if they are attached to rotating parts - leads to reduced inertia forces.
  • a typical path of a thread Y through a thread storage and delivery device F is schematic indicated in order to show how the thread Y, which is conveyed in the direction of the arrow, passes several thread guide surfaces L lying one behind the other in the thread path, touching and deflecting and conveying them further.
  • the thread storage and delivery device F has, for example, a drum-shaped storage element S, the outer periphery of which defines a storage area 2, for storing the thread in a thread supply 3 consisting of a plurality of thread turns. Facing a withdrawal side A for the thread, a head end of the storage element S is provided with a withdrawal edge 4, over which the thread is withdrawn with deflection.
  • the axis of the device and the storage element S is designated by 5.
  • the thread Y enters the device approximately in the axial direction and leaves it on the take-off side A, again close to the axis.
  • a thread guide surface L in a thread guide body 13, which is designed, for example, as a thread eyelet and is fixed in place in a holder 6.
  • the thread guide surface located on the feed side I is formed in a thread guide body 8 which is fixed in the stationary housing 7 in a hollow main shaft 9.
  • a rotary drive device, not shown, is connected to the main shaft 9.
  • a further thread guide surface L is provided in a thread guide body 10, which is designed as a thread eyelet and deflects the thread running direction obliquely and radially outwards from the axis 5 (deflection angle 180 ° - ⁇ ).
  • a pipe socket 71 rotatable therewith, which protrudes outward beyond the storage surface 2 of the storage element S and there has a further guide surface L in a thread guide body 12.
  • the pipe socket 11 forms a winding member M, the thread of one of which does not rotate deducted supply spool shown and wound on storage area 2.
  • a pull-off force acts on the thread, which pulls it out of the thread supply 3 as required.
  • the rotary movement of the main shaft 9 and the winding member M takes place, for example, as a function of the size of the thread supply 3, that is, as soon as the thread supply 3 becomes smaller (the number of turns) when the thread is drawn off, the winding member M again winds thread turns onto the storage area 2.
  • a feed element (not shown) is provided which conveys the thread turns in the thread supply in the direction of the pull-off edge 4.
  • the storage element S could also be formed with two intermeshing drum elements which have inclined and eccentric axes of rotation relative to one another, in order in this way to produce a feed movement for the thread supply and a separation of the thread turns.
  • the thread guide surface L in the thread guide body 12 determines a deflection area for the thread with a large, here even more than 90 ° deflection angle (180 ° - ⁇ ), for example between 175 and 120 °, preferably between 150 and 135 °, if ⁇ is between 15 ° and 60 °, preferably between 30 to 40 °.
  • the deflection angle is also determined by the angle ⁇ between the axis 5 and the pipe socket 11, which e.g. is between 45 ° and 60 °.
  • the thread Y is not only deflected in a radial plane - as is shown in this sectional view - but also at an angle of more than 90 ° opposite to the winding direction of the pipe socket 11.
  • the area of the thread travel path between the thread guide body 10 and the storage surface 2 is a particularly critical area in that thread breaks occur here more than with the thread guide surfaces L of the thread guide bodies 8 and 13. This is due to the large deflection angle (180 ° - ⁇ , 180 ° - ⁇ , and against the winding direction) and the associated frictional forces between the thread and the thread guide surfaces L.
  • the thread guide surface L in the thread guide body 12 consists of a high-density ceramic sintered material with one or more carbide, nitride or carbonide nitride hard materials of the element group: Si, B , Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, as the main component, preferably silicon nitride, the surface of which has optimal sliding properties for threads of all qualities (both synthetic and natural). It is sufficient if the thread guide surface L has a coating or layer made of this high-density sintered material.
  • the thread guide body 12 is entirely a molded part made of this high-density sintered material, which is produced by isostatic pressing in a capsule shell.
  • the hot isostatic pressing can also take place without a capsule shell in a suitable mold cavity.
  • the other thread guide surfaces are made of the same high-density sintered material, for example with Silicon nitride as the main component.
  • This also applies to the pull-off edge 4 of the storage element S, where a coating or an insert ring 16 made of high-density sintered material is applied in order to form the thread side surface L, over which the thread slides in the direction of the axis 5 when it is pulled off and deflected.
  • the storage member S stands still while the winding member M rotates.
  • FIG. 2 A practical thread storage and delivery device F is described with reference to FIG. 2, which operates according to the operating principle of FIG. 1. Corresponding components are identified by the reference symbols used in FIG. 1.
  • magnets 17 are distributed in the housing, which are aligned with the magnet 18 connected to the rotatable on the main bet 9 storage member S and when the main bet 9 rotates Keep storage device S still.
  • a winding cone 19 connected to the main bet 9 extends, on which the pipe socket 11 is located, in the free end of which the thread guide body 12 with the guide surface L of the largest deflection angle (180 ° - ⁇ ) is attached in such a way , that the thread emerging diagonally radially from the pipe socket 11 is placed opposite to the winding direction substantially tangentially on the storage surface 2 of the storage member S.
  • the storage element S consists of two interlocking rod drum halves 20a and 20b, the axis of rotation of the rod drum half 20b being aligned with the axis 5, while the axis of rotation of the rod drum half 20a is arranged eccentrically and obliquely with respect to the axis 5 in order to advance the thread windings in the thread supply (not shown) to create.
  • a filler 21 is provided in the interior of the storage element S, which prevents the ingress of contaminants.
  • the trigger edge 4 of the storage element S is assigned a brake ring 22 which, in a known manner, forms an inhibition for the thread take-off point rotating when the thread is being pulled off, with elastic members.
  • the longitudinal holder 6 for the thread guide body 13 is provided on the housing 7, in which a sensor arrangement 23 is also accommodated for monitoring the size of the thread supply.
  • a thread unit V is placed in front of the thread guide body 8 and contains a further thread guide surface L on the inlet side.
  • the attachment unit can be, for example, a thread movement monitor or a sensing unit.
  • the thread guide body 10 is accommodated in the hollow main shaft 9 and connects the channel in the main shaft 9 to the pipe socket 11.
  • the greatest deflection in the thread path results in the thread guide body 12 along the thread guide surface L, corresponding to FIG. 1.
  • the strongest deflection can also occur on another thread guide surface.
  • At least the thread guide surface L in the thread guide body 12 consists of high-density sintered material, e.g. with the main component silicon nitride.
  • the other thread guide surfaces L provided in the thread path can also consist of the same material.
  • the thread guide body 12 which is made of high-density sintered material, for example with the main component silicon nitride, has a sleeve-shaped base body 24, which has a continuous channel 28 with inner walls 25 owns.
  • a straight hand section 26 runs at the top of the channel 28, where the thread normally hardly comes to rest.
  • the thread guide surface L which is formed with a constant constant curvature, is designed as a convexly curved groove 30, which begins relatively narrow at an extension 29 and has laterally rounded flanks 31.
  • the base body 24 On the outer circumference, the base body 24 has a cylindrical section 36 for inserting the thread guide body 12 into the pipe socket 11 Behind the collar 27 forms a insertion limit 37.
  • the thread guide body 12 can be fixed in the pipe socket in a press fit. However, it is also conceivable to stick or latch the thread guide body 12. It is important that the inlet and outlet of the thread (indicated by dash-dotted lines) on the thread guide surface L occur approximately tangentially to the beginning and end of the thread guide surface L and that the radius of curvature of the thread guide surface is above the extension of which remains essentially the same in order to even out the frictional forces for the thread.
  • the thread guide body 12 is a molded part made of high-density sintered material, e.g. B. with silicon nitride as the main component.
  • the sintered material further contains between 1% by volume and 8% by volume, preferably approximately 2.5%, of boron nitride and / or boron carbide and / or yttrium oxide as an additive.
  • the thread guide body 12 is produced with this shape by hot isostatic sintering in a mold cavity or a covering, for example a glass encapsulation, a preform made of ceramic raw material being covered with a boron carbide or boron nitride layer in the glass encapsulation in order to prevent undesired penetration to prevent glass or other components in the preform body.
  • a slurry of silicon nitride powder is first formed in order to separate out coarser grains, so that only particle sizes of about 1 micron remain in the preform body, which are ultimately responsible for the high density and smoothness of the finished product.
  • the mass of small silicon nitride grains which can be mixed with the usual additives for ceramic sintered material, becomes the at moderate pressure and low temperature Preform body formed, the dimension of which is still slightly larger than the final dimension of the thread guide body 12.
  • the preform body thus solidified is then introduced, for example, into the aforementioned glass encapsulation and placed under a pressure which is kept constant via the hot-press sintering process. High temperature is then applied for sintering for a considerable period of time before the encapsulation is removed and the surface is cleaned of remnants of the casing.
  • the thread guide body 12 is then ready for use.
  • Tests were carried out with a thread guide body 12 according to FIGS. 3a, 3b in order to determine the static friction force and the friction coefficient for two thread types.
  • the angle ⁇ (FIG. 1) was 45 °, while the deflection angle (180 ° - ⁇ ) was 157 ° and the angle was 23 °.
  • the ratio between forces F1 and F2 was measured, this ratio being equal to the value e u .
  • the force F1 occurred in the thread between the thread guide body 12 and the storage surface 2.
  • the force F2 occurred in the thread between the thread guide body 10 and the thread guide body 12.
  • testing was carried out with a thread length of 2 x 20 cm at a load of approx. 30 cN, both the thread guide and the thread used for the test being cleaned with alcohol after each test run.
  • a PES thread ie a polyester or nylon thread, and a cotton thread were used for the test, each with a first Speed of 100 mm / min. and then at a second speed of 1000 mm / min. was pulled over the thread guide surface under load.
  • the mechanical abrasion resistance of the high-density sintered material with silicon nitride as the main component ensures a long service life without visible wear, even with particularly abrasive threads (Lurex or other fancy threads or yarns), and the high mechanical strength of the sintered material enables the thread guide body to be very delicate and easy to train, which leads to desirable low moving masses, particularly in the thread guide in the winding member.
  • Another positive aspect of the high-density sintered material is the contribution of the thread guiding surfaces to a thread pull tension that is as low and uniform as possible, as is favorable for modern textile machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Looms (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
EP89911055A 1988-10-07 1989-10-05 Fadenspeicher- und -liefervorrichtung Expired - Lifetime EP0437472B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89911055T ATE94594T1 (de) 1988-10-07 1989-10-05 Fadenspeicher- und -liefervorrichtung.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3834231 1988-10-07
DE3834231 1988-10-07
DE3835319 1988-10-17
DE3835319 1988-10-17
DE3836833A DE3836833A1 (de) 1988-10-07 1988-10-28 Fadenspeicher- und -liefervorrichtung
DE3836833 1988-10-28

Publications (2)

Publication Number Publication Date
EP0437472A1 EP0437472A1 (de) 1991-07-24
EP0437472B1 true EP0437472B1 (de) 1993-09-15

Family

ID=27198337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89911055A Expired - Lifetime EP0437472B1 (de) 1988-10-07 1989-10-05 Fadenspeicher- und -liefervorrichtung

Country Status (7)

Country Link
US (1) US5160097A (cs)
EP (1) EP0437472B1 (cs)
JP (1) JPH04501143A (cs)
KR (1) KR970007690B1 (cs)
CZ (1) CZ282501B6 (cs)
DE (1) DE58905646D1 (cs)
WO (1) WO1990004058A1 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018115597A1 (de) * 2018-06-28 2020-01-02 Memminger-IRO Gesellschaft mit beschränkter Haftung Fadenliefergerät und Verfahren zum Betreiben eines Fadenliefergerätes

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9215924U1 (de) * 1992-11-25 1993-03-11 Trevira GmbH & Co KG, 60528 Frankfurt Fadenführendes Bauteil mit verbesserter Oberfläche
KR20000032624A (ko) * 1998-11-13 2000-06-15 이경목 직물 제직기용 세라믹 실 가이드 제조방법
DE10006142A1 (de) * 2000-02-11 2001-08-16 Iro Patent Ag Baar Verfahren zur twistfreien Lieferung eines Fadens und Fadenliefergerät
DE102007004441A1 (de) * 2007-01-25 2008-07-31 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Maschine zur Herstellung einer Maschenware aus Fasermaterial, insbesondere Strickmaschine
CZ303880B6 (cs) * 2012-07-12 2013-06-05 Rieter Cz S.R.O. Bubnový mezizásobník príze na pracovním míste textilního stroje a zpusob jeho rízení
WO2018181148A1 (ja) * 2017-03-29 2018-10-04 京セラ株式会社 繊維ガイド

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Publication number Priority date Publication date Assignee Title
US3080134A (en) * 1959-10-08 1963-03-05 Du Pont Textile filament guide
NL270846A (cs) * 1960-12-07
FR1334286A (fr) * 1962-09-25 1963-08-02 Matériau pour pièces subissant des efforts de frottement
JPS5419386Y1 (cs) * 1970-05-12 1979-07-18
US3787229A (en) * 1971-02-17 1974-01-22 Union Carbide Corp Low-friction, wear-resistant material
JPS5048235A (cs) * 1973-08-16 1975-04-30
US4043623A (en) * 1973-08-16 1977-08-23 Surface Technology Corporation Wear resistant filament wear guides and method of making the same
CH624644A5 (en) * 1978-01-31 1981-08-14 Sulzer Ag Device for the storage of filamentary material
JPS5859147A (ja) * 1981-09-29 1983-04-08 Fuji Photo Film Co Ltd 帯状物搬送用セラミツクガイド及びその製造方法
JPS58144058A (ja) * 1982-02-19 1983-08-27 Kyocera Corp スレツドガイド
JPS6028552A (ja) * 1983-07-25 1985-02-13 日産自動車株式会社 緯糸測長装置の測長量調整装置
DE3429219A1 (de) * 1984-08-08 1986-02-20 Sobrevin Société de brevets industriels-Etablissement, Vaduz Fadenspeicher- und liefervorrichtung
JPS61287666A (ja) * 1985-06-14 1986-12-18 Asahi Glass Co Ltd 導電性糸道
CA1287245C (en) * 1985-12-20 1991-08-06 Union Carbide Corporation Wear-resistant laser-engraved metallic carbide surfaces for friction rolls for working elongate members, methods for producing same andmethods for working elongate members
US4794680A (en) * 1985-12-20 1989-01-03 Union Carbide Corporation Novel wear-resistant laser-engraved ceramic or metallic carbide surfaces for friction rolls for working elongate members, method for producing same and method for working elongate members using the novel friction roll

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018115597A1 (de) * 2018-06-28 2020-01-02 Memminger-IRO Gesellschaft mit beschränkter Haftung Fadenliefergerät und Verfahren zum Betreiben eines Fadenliefergerätes

Also Published As

Publication number Publication date
CS564489A3 (en) 1992-02-19
WO1990004058A1 (de) 1990-04-19
KR900702104A (ko) 1990-12-05
CZ282501B6 (cs) 1997-07-16
DE58905646D1 (de) 1993-10-21
EP0437472A1 (de) 1991-07-24
KR970007690B1 (ko) 1997-05-15
US5160097A (en) 1992-11-03
JPH04501143A (ja) 1992-02-27

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