EP0437472A1 - Dispositif de stockage et d'approvisionnement en fil. - Google Patents

Dispositif de stockage et d'approvisionnement en fil.

Info

Publication number
EP0437472A1
EP0437472A1 EP89911055A EP89911055A EP0437472A1 EP 0437472 A1 EP0437472 A1 EP 0437472A1 EP 89911055 A EP89911055 A EP 89911055A EP 89911055 A EP89911055 A EP 89911055A EP 0437472 A1 EP0437472 A1 EP 0437472A1
Authority
EP
European Patent Office
Prior art keywords
thread
storage
delivery device
sintered material
main component
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.)
Granted
Application number
EP89911055A
Other languages
German (de)
English (en)
Other versions
EP0437472B1 (fr
Inventor
Alf Bengtsson
Paer 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/fr
Application granted granted Critical
Publication of EP0437472B1 publication Critical patent/EP0437472B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
  • the thread should pass through the device on its thread path
  • Components of the device come into contact several times, some of the components of the device rotating relative to the running thread, the thread
  • the quality of a thread storage and delivery device is in fact judged by the reliability, ie the frequency of the thread breaks during operation, because everyone
  • Thread breaks occur predominantly between the feed area and the storage element of the thread storage and delivery device, i.e. where, as a rule, a deflection of the thread occurs, coupled with friction, so that the assumption is obvious that between the frequency of the thread breaks and the thread guide surfaces and the action of the thread breaks.
  • Thread guide surfaces on the thread there is a connection Thread guide surfaces on the thread there is a connection.
  • the invention has for its object a
  • Thread guide surface containing thread guide surface in a very specific way, namely according to an isostatic
  • the hard materials of the element group Si, B, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W (silicon, boron, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten) , in particular of silicon and / or boron, can be in
  • Si ntermateri al achieve the sliding properties so favorable for the different threads, whereby the small grain sizes (around 1 micron) possible with these fabrics also make an probably important contribution.
  • the isostatic hot press sintering in a capsule shell prevents foreign or mechanical or
  • Sintered material with one of the specified hard materials, e.g. Silicon nitride, as the main component, is used in various fields of technology; however, the use and selection of this extremely expensive sintered material generally involves high mechanical loads in combination with strong thermal ones
  • this sintered material is used in a high density setting
  • the embodiment of claim 2 is advantageous. With such a large deflection angle, a significant contact pressure of the thread is also to be expected, which plays a role in the extent of the load in the thread. The low friction of the thread occurs in such guide surfaces
  • Silicon nitride has proven to be a particularly useful hard material. Small additions of boron nitride and / or carbide are advantageous. Yttrium oxide as Additive allows a high density and good adhesion of the components to be achieved.
  • the frequency of the thread breaks is already determined by the use of the high-density ceramic sintered material for the guide surfaces with a large, e.g. reduced deflection angle of the thread by more than 90 °; however, since the other guide surfaces in the thread path can also be the cause of thread breaks, it is expedient, according to claims 7 and 8, to use several or all of the guide surfaces made of the high-density sintered material, e.g. with silicon nitride as the main component, because the
  • the use of the isostatic hot pressing process leads, particularly in the preferred embodiment according to claim 10, to low surface friction.
  • Trigger area of the device is used, goes from the
  • the device can also be a zone that is critical with regard to yarn breaks, especially if guide surfaces with extremely favorable sliding properties are already present upstream and downstream. It is therefore advantageous to use the high-density ceramic sintered material with the specified values in this area too
  • Hard materials e.g. with silicon nitride, as
  • FIGS Claims 13 and 14 in which the storage member is arranged stationary and the winding member one of a hollow, connected to a rotary drive
  • Main shaft protrudes radially outward beyond the storage area of the adjacent storage organ
  • Pipe socket is in the free end of the
  • the thread has the same, favorable sliding conditions throughout the groove. Even in the event of unavoidable spinning movements of the thread during its run, it essentially always touches the guide surface over the same length. There are no sharp edges or protrusions at which local strain on the thread could occur.
  • the thread also finds optimal sliding conditions when it runs up or down the guide surface. The loads exerted to deflect the thread are distributed evenly over the effective length of the guide surface and remain as a result of the low friction, in particular when using silicon nitride
  • the embodiment according to claim 16 is also important because the funnel-shaped trough allows the thread to move laterally without it coming into contact with rubbing edges and because the same thread guide can be used for both directions of rotation of the winding member.
  • the embodiment according to claim 17 is structurally simple and easy to assemble.
  • the cylindrical outer section serves to fix the thread guide body.
  • the inner thread guide surface with the collar is responsible for the gentle treatment of the thread, the thread never coming into contact with the component of the device on which the
  • Thread guide is set.
  • the high abrasion resistance and high mechanical strength are welcome in the sintered material, as this means that the thread guiding surfaces even after a long time
  • Thread guide body can be designed to be delicate and therefore easy, which - if they move - is too small
  • Fig. 1 is a schematic representation of the thread path
  • Fig. 2 is a side view with partial longitudinal section of a thread storage and delivery device
  • FIGS. 1 and 2 associated views, partially in section, of a thread guide, as can be used in FIGS. 1 and 2.
  • 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 them and conveying them further.
  • the thread storage and delivery device F has one for storing the thread in one of several
  • drum-shaped storage element S for example, drum-shaped storage element S, the outer circumference of which defines a storage area 2.
  • a head end of the storage element S 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.
  • Storage organ S is designated 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.
  • Thread guide body 13 is provided, which is designed, for example, as a thread eyelet and fixed in place in a holder 6. The one on the feed side I.
  • Thread guide surface is in a thread guide body 8
  • main shaft 9 With the main shaft 9 is a rotary drive device, not shown in
  • Thread supply 3 i.e. as soon as the thread supply 3 becomes smaller when the thread is drawn off (the number of turns), the winding element M winds thread turns again onto the storage area 2.
  • a feed element (not shown) is provided, which the
  • the thread guide surface L in the thread guide body 12 defines a deflection area for the thread with a large deflection angle (180 ° - ⁇ , which here is even more than 90), which is for example between 175 and 120, preferably between 150 and 135, if ⁇ is between 15 ° and 60 °, preferably between 30 to 40 °
  • Deflection angle is also determined by the angle ß
  • the thread Y is not only deflected in a radial plane, as shown in this sectional view, but also at an angle of more than 90
  • Thread feeder and delivery device F represents the area of the thread path between the
  • Thread guide body 10 and the storage surface 2 represent 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 ° -ß, 180 ° - ⁇ , and against 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
  • Main component preferably two silicon nitride, the surface of which is suitable for threads of all qualities (both
  • 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 made by hot isostatic pressing in a capsule shell can also be done without a capsule shell in one
  • the thread is deflected on its path and also rubs against the other thread guide surfaces, it is expedient if the other thread guide surfaces, at least those with a significant deflection angle, 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 guide surface L over which the thread is pulled off and
  • Discharge side A is the thread guide surface critical with respect to thread breaks with a larger deflection angle.
  • FIG. 2 A practical thread feeder and delivery device F is described with reference to FIG. 2, which operates according to the functional principle of FIG. 1. Corresponding components are used with those in FIG. 1
  • the housing 7 in which the main shaft 9 and the
  • Storage member S are rotatably mounted, is attached to a bracket 14 on a support member, not shown.
  • magnets 17 are distributed in the housing, which are aligned with the magnet 18 connected to the rotatable storage element S on the main shaft 9 and upon rotation of the main shaft 9 Keep storage device S still.
  • a winding cone 19 connected to the main shaft 9 extends, on which the pipe socket 11 is located, in the free end of which the thread guide body 12 is attached with the guide surface L of the largest deflection angle (180 ° - ⁇ ) here, such . 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
  • Bar drum half 20a is arranged eccentrically and obliquely with respect to the axis 5
  • 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.
  • the thread guide body 8 is an attachment unit V
  • Thread guide surface L contains.
  • the attachment unit can, for example, be a thread movement monitor or a
  • the thread guide body 10 is accommodated in the hollow main shaft 9 and connects the channel in the main shaft 9 with 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, for example with the main component silicon nitride.
  • the other thread guide surfaces L provided in the thread path can also consist of the same material.
  • 3a and 3b illustrate a special one
  • Embodiment of the thread guide body 12 of Figs. 1 and 2. The made of high density sintered material, e.g. with the main ingredient silicon nitride, existing
  • Thread guide body 12 has a sleeve-shaped
  • Base body 24 which has a continuous channel 28 with inner walls 25.
  • a straight wall section 26 runs at the top of the channel 28, where the thread normally hardly comes into contact.
  • On the lower side of the channel 28 is the one
  • Thread guide surface L as a convexly curved groove 30
  • circumferential, inclined collar 27 runs out.
  • the end region of the channel 28 facing the collar 27 widens in a funnel shape to form a trough 32 (indicated by dashed lines with its boundary) in order to allow the thread to run off slightly against the winding direction
  • the inclined end of the collar 27 is designated 34, the perpendicular to the axis of the sleeve-shaped body 24, rear
  • Base body 24 for inserting the thread guide body 12 into the pipe socket 11 has a cylindrical section 36
  • the rear of the collar 27 forms one
  • the thread guide body 12 can be fixed in the pipe socket in a press fit.
  • the thread guide body 12 is a molded part made of high-density sintered material, e.g. B. with silicon nitride as
  • This may include
  • Sintered material furthermore between 1% by volume and 8% by volume, preferably approximately 2.5%, boron nitride and / or
  • Thread guide body 12 is through with this shape
  • Preform made of ceramic raw material is covered with a boron carbide or boron nitride layer
  • Prevent constituents in the preform body usually a Aufsehlämmung of silicon nitride powder is formed in order to separate coarser grains, so that only more in the preform body
  • Grain sizes of approx. 1 micron remain, which are ultimately responsible for the high density and smoothness of the finished product. Smaller in mass
  • Silicon nitride grains which can be mixed with the usual additives for ceramic sintered material, become the at moderate pressure and low temperature Preform formed, its dimension still
  • Preform body is then e.g. in the aforementioned
  • the angle ⁇ (Fig. 1) was 45 ° during the
  • Deflection angle (180 ° - ⁇ ) 1570 or 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 flat 2.
  • the force F2 occurred in the thread between the thread guide body 10 and the thread guide body 12.
  • Thread guide surface L made of high-density sintered material with silicon nitride as the main component and approx. 2.5%
  • Boron carbide or yttrium oxide gave a value of 1.64. This means an improvement of around 12.7%.
  • Sintered material for the same thread gave a value of 1.98. This means an improvement of around 10.4%.
  • Cotton thread of a common thread count has a value of 2.04, while with the same thread on the same guide surface made of high-density sintered material with the
  • 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.
  • Thread guiding surfaces which consist of conventional sintered material. This gentle treatment of the thread results in a decrease in thread breaks, which was previously the case predominantly occurred in the area of the thread path in which the strongest deflection and therefore the greatest mechanical stress was present for the thread. This applies to all thread counts and thread qualities on such thread feeders and feeders
  • the mechanical abrasion resistance of the high-density sintered material with silicon nitride as the main component ensures a long service life without any noticeable
  • Sintered material is the contribution of the thread guiding surfaces to the smallest and most uniform possible
  • Thread take-up tension as it is cheap for modern textile machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Looms (AREA)

Abstract

Un dispositif de stockage et d'approvisionnement en fil pour machines textiles comprend un organe de stockage qui forme une surface de stockage et un organe d'enroulement du fil, l'organe d'enroulement et l'organe de stockage étant rotatifs l'un par rapport à l'autre, afin de transporter le fil du côté d'alimentation du dispositif jusqu'à la surface de stockage de l'organe de stockage et former ainsi une réserve de fil d'où le fil est tiré et transporté jusqu'au côté de sortie du dispositif. Des corps de guidage du fil agencés dans le trajet du fil entre la zone d'alimentation et la zone de sortie présentent des faces de guidage du fil composées d'un matériau céramique fritté ou recouvertes d'un matériau céramique fritté, le fil étant dévié par les faces de guidage de façon à former des angles divers. Afin d'obtenir des conditions de fonctionnement sous friction particulièrement avantageuses, au moins la face de guidage (L) qui présente le plus grand angle de déviation (180°-alpha) se compose d'un matériau fritté à densité élevée contenant surtout des nitrures, des carbures et/ou des carbonitrures à résistance mécanique élevée pressés à chaud selon un procédé de frittage isostatique dans une enceinte de façon à former l'organe de guidage du fil.
EP89911055A 1988-10-07 1989-10-05 Dispositif de stockage et d'approvisionnement en fil Expired - Lifetime EP0437472B1 (fr)

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 true EP0437472A1 (fr) 1991-07-24
EP0437472B1 EP0437472B1 (fr) 1993-09-15

Family

ID=27198337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89911055A Expired - Lifetime EP0437472B1 (fr) 1988-10-07 1989-10-05 Dispositif de stockage et d'approvisionnement en fil

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110520558A (zh) * 2017-03-29 2019-11-29 京瓷株式会社 纤维引导器

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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
DE102018115597A1 (de) * 2018-06-28 2020-01-02 Memminger-IRO Gesellschaft mit beschränkter Haftung Fadenliefergerät und Verfahren zum Betreiben eines Fadenliefergerätes

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JPS5419386Y1 (fr) * 1970-05-12 1979-07-18
US3787229A (en) * 1971-02-17 1974-01-22 Union Carbide Corp Low-friction, wear-resistant material
JPS5048235A (fr) * 1973-08-16 1975-04-30
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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
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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
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Publication number Priority date Publication date Assignee Title
CN110520558A (zh) * 2017-03-29 2019-11-29 京瓷株式会社 纤维引导器

Also Published As

Publication number Publication date
WO1990004058A1 (fr) 1990-04-19
EP0437472B1 (fr) 1993-09-15
CS564489A3 (en) 1992-02-19
CZ282501B6 (cs) 1997-07-16
JPH04501143A (ja) 1992-02-27
KR900702104A (ko) 1990-12-05
KR970007690B1 (ko) 1997-05-15
US5160097A (en) 1992-11-03
DE58905646D1 (de) 1993-10-21

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