EP1514961B1 - Litze mit vermindertem Spiel - Google Patents

Litze mit vermindertem Spiel Download PDF

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Publication number
EP1514961B1
EP1514961B1 EP04019247A EP04019247A EP1514961B1 EP 1514961 B1 EP1514961 B1 EP 1514961B1 EP 04019247 A EP04019247 A EP 04019247A EP 04019247 A EP04019247 A EP 04019247A EP 1514961 B1 EP1514961 B1 EP 1514961B1
Authority
EP
European Patent Office
Prior art keywords
heald
rear web
strands
height
width
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
EP04019247A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1514961A3 (de
EP1514961A2 (de
Inventor
Franz Mettler
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.)
Groz Beckert KG
Original Assignee
Groz Beckert 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 Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP1514961A2 publication Critical patent/EP1514961A2/de
Publication of EP1514961A3 publication Critical patent/EP1514961A3/de
Application granted granted Critical
Publication of EP1514961B1 publication Critical patent/EP1514961B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/02—Healds
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/06—Heald frames
    • D03C9/0608—Construction of frame parts
    • D03C9/0616—Horizontal upper or lower rods
    • D03C9/0633—Heald bars or their connection to other frame parts

Definitions

  • the invention relates to a stranded wire and its support rail and the system formed from the support rail and stranded wires thereon.
  • Weaving machines have for shedding on healds with strands, which are held on mounting rails.
  • the heald frames are moved in operation to the shedding back and forth.
  • shedding must be faster and faster, which leads to high dynamic loads on the shaft support rails and the strands.
  • the inner width of the end eyelet is 2.5 mm.
  • heald bars which today have a height of 22 mm and a width of 1.7 mm.
  • the strands have more than 4 mm play in the longitudinal direction and about 0.8 mm in the transverse direction.
  • the aim today is to make healds much stiffer than before, so that the expected dynamic deformations occur only at much higher working speeds than before. However, they can never be completely avoided because of the masses to be accelerated and braked, which are applied by the heald itself, as well as by the heddle rails, the strands and the warp threads passing through the heddles.
  • the heddle according to the invention has a reduced compared to known healds end, the inner. Free space has a height of at most 19.5 mm. This measure alone leads to a reduction in the weight of the end eyelets compared to ISO-compliant end eyelets.
  • the reduced mass significantly reduces the forces required to accelerate and decelerate the strands.
  • the reduced height of the inner clearance of the end lug forces the use of Litzenträgschienen with reduced Cross section, in particular reduced height. Although this reduces the stiffness of the heald support rail, but also reduces the mass of the Litzentragschienen considerably. At high accelerations, common in modern weaving machines, the reduced mass reduces the inertial forces more than would be needed to compensate for the loss of stiffness. In conjunction with the mass reduction of healds, this gives the possibility to increase the operating speed of a corresponding weaving machine.
  • the invention is particularly opposed to the tendency to use stiffer heddles. If the height of the free space of the c-shaped end eyelet is set to a value of at most 17.5 mm and the height of the heddle support rail is 16 mm, for example, a longitudinal play (axial play) of the strands amounts to a maximum of 1.5 mm. Compared to conventional stranded DIN rail systems, the longitudinal play of the strands is reduced by a factor of about 2 to 3. In conjunction with the use of sturdy heald frames, higher speeds can be achieved. The lower play of litz wires, in particular when using the stiffer heddle shafts, reduces annoying noise and wear on the heddle rails and stranded eyelets.
  • the reduced height of the free space of the end eyelet leads to a reduced length of the end eyelet.
  • the heald requires less space for receiving the strands, whereby the shaft rods can maintain a larger, in the direction of movement of the heald to be measured width while maintaining the outer dimensions of the heald. You will be much stiffer, which in turn can be exploited in the sense of increasing the operating speed of the loom.
  • a reduction in the height of the clearance of the c-shaped end eyelet is the approach for a substantial optimization of heald frames in terms of speed, noise and wear.
  • the heddle support rail preferably has only a width of about 1.5 mm, wherein it is provided, at least in one preferred embodiment, on at least one side with a longitudinally extending recess or a plurality of individual recesses arranged in a row.
  • This depression serves, on the one hand, to make the heddle support rail lighter and, on the other hand, to enable the attachment of the heddle support rail to a shaft profile or to a connection means to the shaft profile in a simple and secure manner by means of a plurality of rivets.
  • a half-round head of the rivet can be accommodated without obstructing the displaceability of the strands.
  • the groove or depression is also advantageous because a sufficient countersink for the rivet head in the 1.5 mm very thin shaft support rail is no longer possible with sufficient certainty. The effort required to maintain close tolerances to achieve reliability would be too high and thus uneconomical.
  • a system of strands and Litzentragschienen is provided which by the Standard dimensions avoided given disadvantages and allows an optimal design of the system, whereby the cost of production is reduced and the efficiency of the weaving machines equipped with it is improved.
  • FIG. 1 a heald 1 is illustrated, which has an upper shaft rod 2 and a lower spaced parallel to this second shaft rod 3.
  • the ends of the shaft rods 2, 3 are connected to each other by side struts 4, 5, so that a solid rectangular frame is formed.
  • a heddle support rail 6, 7 is held, as well as from the FIGS. 2 and 3 evident.
  • the heddle support rail is preferably formed in the form of a flat steel profile whose width B is preferably at most 1.5 mm and the height H is preferably 18 mm.
  • the cross section is approximately rectangular, wherein the heddle support rail 6, 7 is provided on its upper side with a rounding.
  • FIG. 3 illustrated be provided at selected locations with a recess 11 whose height H1 is a maximum of 14 mm and the longitudinal extent (perpendicular to the plane), for example, 11 mm.
  • a clearance for receiving a rivet head 12 of a connecting rivets 13 is provided, which serves for fastening the heddle support rail 6, 7 on the shaft rod 2, 3.
  • the rivet head 12 may be formed as a semicircular head, which finds place in the recess 11 without protruding beyond the outer contour of the support rail 6, 7.
  • strands 14 are held parallel and spaced from each other, where they sit with provided at both ends c-shaped end eyelets 15, 16 on the Litzentragschienen 6, 7. Between the end loops 15, 16 extends itself a straight, shallow shaft which is provided approximately centrally with a thread eye 17.
  • the strand 14 is in FIG. 5 separately illustrated.
  • the shank which extends between both end loops 15, 16 is preferably bounded by two parallel edges by two straight edges 18, 19. If necessary, the shaft in the region of the thread eye 17 can also be enlarged in order to allow larger eyelets.
  • the shaft is arranged approximately centrally to the end eyelets 15, 16.
  • the end eyelets 15, 16 are formed substantially equal to each other.
  • the shaft widens toward the end eyelet to the full width B2 of the end eyelet, which is preferably 4.5 mm.
  • other widths may be provided, such as the usual today 5.56 mm, but is preferred, the measure of 4.5 mm.
  • the shaft merges into a root region 21 of the respective end eyes 15, 16.
  • Both end loops 15, 16 are substantially identical, so that the following description applies equally to both end loops 15, 16.
  • a Reihloch 22 is formed, for example in the form of a round opening. Furthermore, extends from the root portion 21, a back web 23 away, whose length is 18.5 mm to 19.5 mm. Its width is 1.5 mm to 2 mm.
  • the back web 23 carries at its end facing away from the shaft, a head portion 24, which forms the upper boundary for the end eye 15 and the lower boundary for the end eye 16.
  • the head portion 24 may have a roof like beveled edge, as in the end eyelet 15, or a downwardly rounded edge, as in the end eyelet 16. Inside, the head portion 24 as well as the root portion 21 is rounded.
  • Both of the root region 21 and of the head region 24 extend in each case limbs 25, 26 parallel to the back web 23 toward one another.
  • the free ends of the legs 25, 26 define between each other a passage having a width W which, depending on the height of the heddle support rail, is between 3 mm and 8 mm.
  • the width W is significantly smaller than the height H2 of an internal clearance, which is enclosed between the root region 21 and the head region 24 and which serves to receive the heddle support rail 6, 7.
  • the width of the legs 25, 26 is less than that of the spine web.
  • the distances of the legs 25, 26 from the back web 23 determine the inner width B3 of the free space. B3 is 0.2 mm to 0.5 mm larger than the width B of the heddle support rail.
  • the height H2 is 0.5 mm to 1.5 mm larger than the height H of the heddle support rail. It is a minimum axial or longitudinal clearance of 0.5 mm provided when the shaft rods 2, 3 are designed to be particularly stiff. For lower weaving machine speeds or softer shaft bars, play, i. increased the difference between H and H2 up to 1.5 mm. Neither on the heddle support rail 6, 7 nor on the shaft rod 2, 3 nor on the strands 14 clamping or spring means are provided which could limit the free but slight play of the end eyelets 15, 16 on the heddle rails 6, 7.
  • FIG. 5 can be provided on at least one of the end loops 15, 16 at both existing in the root region 21, mutually parallel edges embossments 27, 28 are provided, which serve as Separierkanten and facilitate a separation of flat adjacent strands.
  • the length L which is to be measured between the mutually spaced inner edges of the two end loops 15, 16, shortened by about 5 mm.
  • the increase in height is in FIG. 2 indicated by "Z".
  • the shaft rods 2, 3 are designed to be particularly stiff due to their increased width.
  • the strands 14 have an axial clearance (transverse to the Litzentragschienen 6, 7) of only 0.5 mm to 1.5 mm.
  • the reduced mass of the end eyelets 15, 16 and the Litzentragschienen 6, 7 also reduces the required acceleration forces, which allows increased operating speeds.
  • the end eyes 15, 16 may be provided with a lateral bend or undulation to produce a certain spring elasticity.
  • the strands 14 with shortened end eyes 15, 16 according to FIG. 6 or 7 also be prepared asymmetrically. In this case, the shaft is against a center line 29 to the spine 23 down ( FIG. 7 ) or away from it ( FIG. 6 ). Both strands 14a, 14b can, as FIG. 8 illustrates being arranged alternately in a hive.
  • Strands 14, 14a, 14b can be provided with eyelets in all desired shapes. Therefore, the existing automatic drawing-in machines can continue to be used.
  • a strand 14 according to the invention is characterized by reduced end eyelets 15, 16, which are associated with stranded support rails 6, 7 with a reduced cross-section.
  • the axial play of the strands on the heddle support rails 6, 7 is limited to 0.5 mm to 1.5 mm.
  • the lateral play is in the range of 0.2 mm to 0.5 mm.
  • This system formed from Litzentragschienen and strands is particularly suitable for very stiff healds for looms with the highest working speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
EP04019247A 2003-09-15 2004-08-13 Litze mit vermindertem Spiel Expired - Lifetime EP1514961B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342577 2003-09-15
DE10342577A DE10342577B4 (de) 2003-09-15 2003-09-15 Litze mit vermindertem Spiel

Publications (3)

Publication Number Publication Date
EP1514961A2 EP1514961A2 (de) 2005-03-16
EP1514961A3 EP1514961A3 (de) 2005-11-30
EP1514961B1 true EP1514961B1 (de) 2010-01-27

Family

ID=34129813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04019247A Expired - Lifetime EP1514961B1 (de) 2003-09-15 2004-08-13 Litze mit vermindertem Spiel

Country Status (7)

Country Link
US (1) US7204274B2 (zh)
EP (1) EP1514961B1 (zh)
JP (1) JP4621461B2 (zh)
KR (1) KR100623407B1 (zh)
CN (1) CN1598107B (zh)
DE (2) DE10342577B4 (zh)
TW (1) TWI271452B (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10260075B4 (de) * 2002-12-19 2007-02-01 Groz-Beckert Kg Schaftrahmen und Webschaft für Webmaschinen
DE10329219B4 (de) * 2003-06-28 2007-04-05 Groz-Beckert Kg Schaftstab mit beweglichem Litzendämpfungselement
FR2857675B1 (fr) * 2003-07-18 2006-01-13 Staubli Sa Ets Cadre lisses et metier a tisser pourvu d'au moins un tel cadre
DE10342577B4 (de) * 2003-09-15 2005-07-21 Groz-Beckert Kg Litze mit vermindertem Spiel
DE102005033175B3 (de) * 2005-07-13 2006-11-30 Groz-Beckert Kg Weblitze, insbesondere für schnell laufende Webmaschinen
DE102005036329A1 (de) 2005-07-29 2007-02-01 Groz-Beckert Kg Filznadelverpackung
DE502005009281D1 (de) * 2005-12-08 2010-05-06 Groz Beckert Kg Weblitze für bandartige Kettfäden
BE1016891A6 (nl) * 2005-12-13 2007-09-04 Picanol Nv Broekhevelinrichting voor een weefmachine.
EP2019157B1 (de) 2007-07-26 2010-06-30 Groz-Beckert KG Schmale gekröpfte Weblitze
EP2166138A1 (de) * 2008-09-23 2010-03-24 Groz-Beckert KG Jacquardlitze mit geprägtem Fadenaugenbereich
CN101831744B (zh) * 2009-03-09 2013-03-20 周頔 一种经纱开口运动的形成方法
CN110129949B (zh) * 2019-05-24 2020-11-20 常熟市知识产权运营中心有限公司 一种组装式综框

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047511A (en) * 1934-10-27 1936-07-14 Steel Heddle Mfg Co Loom harness
CH402767A (de) * 1962-12-21 1965-11-15 Grob & Co Ag Reiterloser Webschaft
BE1010007A3 (nl) * 1996-01-19 1997-11-04 Picanol Nv Weefkader voor weefmachines.
DE19800811B4 (de) * 1998-01-12 2009-06-04 Grob Textile Ag Weblitze
KR100281012B1 (ko) * 1999-05-29 2001-01-15 김성호 직조용 종광 및 그 표면처리 방법
DE19932685A1 (de) * 1999-07-13 2001-01-18 Grob Horgen Ag Horgen Weblitzensystem
KR200229742Y1 (ko) 2001-01-12 2001-07-03 김인수 직기용 종광
JP2003082550A (ja) * 2001-09-06 2003-03-19 Toray Ind Inc 織 機
DE10206130B4 (de) * 2002-02-14 2016-09-01 Groz-Beckert Kg Webschaft mit mindestens einer Weblitze
DE10330304B4 (de) * 2003-06-17 2005-10-27 Groz-Beckert Kg Verbesserte Weblitze
DE10342577B4 (de) * 2003-09-15 2005-07-21 Groz-Beckert Kg Litze mit vermindertem Spiel

Also Published As

Publication number Publication date
JP2005089955A (ja) 2005-04-07
TWI271452B (en) 2007-01-21
US20050087252A1 (en) 2005-04-28
EP1514961A3 (de) 2005-11-30
US7204274B2 (en) 2007-04-17
EP1514961A2 (de) 2005-03-16
DE10342577A1 (de) 2005-04-14
CN1598107A (zh) 2005-03-23
KR20050027928A (ko) 2005-03-21
DE502004010698D1 (de) 2010-03-18
DE10342577B4 (de) 2005-07-21
CN1598107B (zh) 2012-07-04
TW200526830A (en) 2005-08-16
KR100623407B1 (ko) 2006-09-19
JP4621461B2 (ja) 2011-01-26

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