EP1500733B1 - Aiguille pour machine à tricoter - Google Patents

Aiguille pour machine à tricoter Download PDF

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Publication number
EP1500733B1
EP1500733B1 EP04015439A EP04015439A EP1500733B1 EP 1500733 B1 EP1500733 B1 EP 1500733B1 EP 04015439 A EP04015439 A EP 04015439A EP 04015439 A EP04015439 A EP 04015439A EP 1500733 B1 EP1500733 B1 EP 1500733B1
Authority
EP
European Patent Office
Prior art keywords
knitting machine
needle
section
machine needle
recess
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
EP04015439A
Other languages
German (de)
English (en)
Other versions
EP1500733A1 (fr
Inventor
Ingo Landenberger
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 EP1500733A1 publication Critical patent/EP1500733A1/fr
Application granted granted Critical
Publication of EP1500733B1 publication Critical patent/EP1500733B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/04—Latch needles

Definitions

  • the invention relates to a knitting machine needle and a needle set containing at least one such knitting machine needle.
  • a needle is known whose needle body between the foot and the hook is formed by a double-deflected web. Parts of the bridge have a changing height.
  • the needle body has generously sized openings, so that only after the needle back and after the needle top each have a narrow web remains. Even such needles have proven to some extent. However, all needles have limits that come to light especially at high speeds. There are then broken hooks. In the case of needle sets containing knitting machine needles with different foot positions, the hook breaks tend to accumulate, particularly in needles whose feet are particularly close to the hook.
  • the knitting machine needle according to the invention has a needle body with a web-like, extending between the foot and the hook portion which is provided with a deflection, which is also referred to as a meandering bow. In the region of this deflection at least one recess is formed. This recess gives the deflection a special flexibility and damping effect. It has been found that the required stability of the needle shank can be obtained with this measure and, on the other hand, the tendency to hook fractures is drastically reduced even in the case of strong impact loads on the needle. It can thereby significantly increase the life of the affected knitting machine needles. This is especially true for needle families or needle sets, in which individual needles have low foot-hook spacing. Especially with such needles where only a single meander arc, i. a single deflection between the foot and the needle is present, the recess proves to be particularly positive in terms of durability and shock resistance.
  • the deflection can be formed by a shaft-shaped shaft section or also by adjoining respective straight-formed sections (first, second and third sections) which enclose an obtuse or a right angle with one another.
  • the respective sections have mismatched heights, with the height of the first and third sections perpendicular to the back of the needle and the height of the second section preferably approximately parallel to it.
  • the height of the needle body is preferably three to five times the height of the individual sections.
  • the recess is formed as a slot and extends interrupted or uninterrupted over the entire deflection.
  • the recess may be longer than the z-shaped deflected area, i. it may extend beyond the deflected area to one or both sides, in particular it may extend into or under the area of the foot.
  • the recess can also be provided from a series of circular recesses or otherwise shaped recesses. It is possible to form the slot as a complete, open breakthrough as well as to fill it with a damping (energy-depleting) material. Alternatively, it is possible not to form the slot as a complete breakthrough but only as a one- or two-sided countersink or gutter. Such embodiments result in slightly higher shaft stiffness than full penetration embodiments.
  • Filling the apertures or slot recesses (one-sided or two-sided recess with bottom) with damping material also has the advantage that the slot does not fill with foreign matter such as oil and dirt, which may affect the vibration characteristics of the shaft.
  • the properties of the knitting machine needle then remain unchanged over the operating time of the same, at least as far as they are determined by the properties of the shaft.
  • the needle according to the invention can have a plurality of deflections or meanders and a plurality of feet. It has proven to be advantageous that, depending on the parameters in the knitting machine and the knitting conditions individual deflections are provided regardless of their position to the foot with recesses according to the invention. In other cases, all deflections may be provided with recesses according to the invention. As a result, needles of a needle family are provided with recesses according to the invention at different points.
  • FIG. 1 illustrates a knitting machine needle 1, as can be used in particular for high-speed knitting machines. It has a flat needle body 2, which is followed by a foot 3 of equal thickness, which protrudes at right angles from a narrow, the needle top firmly laying strip-shaped surface 4 away. Parallel to this, a narrow strip-shaped needle back 5 is formed on the opposite side of the needle body 2. Both the surface 4 and the needle back 5 are interrupted by recesses 6, 7, 8, 9 in such a way that the needle body 2 in a sense by meandering adjoining webs 11, 12, 13, 14 is formed. The height NH of the needle body extends from the surface 4 to the needle back 5.
  • the needle body 2 To the needle body 2 includes a shaft 15 which carries a hook 16 at the end.
  • the shaft 15 is formed straight straight and tapers at its end to the hook 16 back.
  • a pivotally mounted tongue 17 may be provided between the needle body 2 and the shaft 15.
  • a deflection 18 (meander) is formed, which connects the web 11 with the shaft 15 offset parallel to it.
  • the diverter includes a first section 21, a second section 22 and a third section 23, the section 21 being part of the shaft 15 and the section 23 being part of the web 11.
  • the sections 21, 22, 23 each enclose each other at about a right angle and they have, as is apparent from Figure 3, approximately the same height H.
  • the height H is to be measured for the first portion 21 and for the third portion 23 perpendicular to the needle back 5 and for the second portion 22 approximately parallel to the needle back 5.
  • the length of the portion 22, between the surface 4 and the needle back 5 is to be measured, is preferably three to five times the height H of the needle shaft 15th
  • the recess 24 may be formed as a slot which completely breaks through the needle body. This is illustrated, for example, in FIG. 6, which illustrates a vertical section through the section 23.
  • the recess 24 opens here on both flat sides 25, 26 of the needle body 2. Similarly, the section through the sections 21 and 22 looks.
  • the recess 24 forming slot may, as Figure 3 illustrates, be formed S-shaped.
  • the slot ends preferably connect to circular openings 27, 28 which are intended to avoid stress concentration at the slot end.
  • the slot In the region of the transitions between the sections 21, 22 and 22 and 23, the slot may be formed rounded S-shaped.
  • the rounding radii R are preferably greater than the width of the parallel-sided limited slot.
  • the width of the slot is also preferably smaller than the width of the webs 31, 32 provided above and below the slot. It is possible to reduce the slot width to such an extent that the slot becomes a joint at which the webs 31, 32 abut one another issue. However, it is preferred that these, as illustrated in Figure 3, leave a gap between each other.
  • the circular openings 27, 28 each have a radius whose size coincides with half the width of the recess 24.
  • the knitting machine needle 1 described so far operates as follows:
  • FIG. 2 illustrates a needle family 33 to which different knitting machine needles 1, 34, 35, 36 belong. While the knitting machine needle 1 coincides with the above-described knitting machine needle, the knitting machine needles 34, 35, 36 have no slotted deflection. Rather, their needle bodies are provided only with closed deflections, so that they are formed overall meandering.
  • the knitting machine needles 34, 35, 36 differ from the knitting machine needle 1 by the number of deflections between the respective foot 3 and the respective hook 16.
  • the needle family 33 thus has at least that knitting machine needle 1, in which only a deflection 18 between the foot third and the hook 16 is provided, a corresponding, extending over the deflection 18 recess 24.
  • the other knitting machine needles 34, 35, 36 may, but need not, be provided with recesses.
  • a needle set formed from such a needle family 33 has a high load capacity and service life.
  • the life of the knitting machine needle 1 in which the foot 3 is closest to the hook 16 in comparison with the other knitting machine needles 34, 35, 36 is by no means less than the life of the remaining knitting machine needles 34, 35, 36.
  • Figure 4 illustrates a modified embodiment of the knitting machine needle 1.
  • the web 11 connects to the deflection 18, in which in addition to the recess 24 further recesses 37, 38 are provided.
  • All recesses 24, 37, 38 are each formed as a slot, wherein they are arranged longitudinally in the respective section 21, 22, 23. Between the straight slots 37, 24, 38 is in each case a distance which is approximately as large as a slot width.
  • the recesses 37, 24, 38 can also be arranged across sections.
  • the recess 38 may protrude from the portion 23 into the portion 22 and the recess 37 from the portion 21 may protrude into the portion 22.
  • the recess 24 may protrude from section 21 via the section 22 into the section 23.
  • the corresponding recesses are arranged correspondingly at a distance from each other.
  • this includes the section 22 with the adjacent sections 21, 23 each have an obtuse angle.
  • the recess 24 is predominantly as preferably straighter Slot arranged in the section 22. It can also extend with curved ends in the sections 21, 23 in.
  • 41, 42, 43, 44, 45, 46 for example in the form of circular openings are formed, the diameter of which approximately coincides with the slot width of the recess 24.
  • This knitting machine needle has in the region of its deflection 18 an improved compliance and it tends to a lesser extent to hard breaks than comparable knitting machine needles without formed in the region of the deflection 18 recesses.
  • All recesses of the above-described knitting machine needles may be open as shown in FIG. However, it is also possible to provide these completely or partially according to Figure 7 with a filling 47, which consists of damping material.
  • a filling 47 which consists of damping material.
  • This may be a plastic, a natural material, elastomer, rubber or even a metal that is different from the metal from which the rest of the knitting machine needle is formed. It may, for example, have a different internal damping, mass, strength, etc.
  • the damping material contributes to the absorption of impact energy, which can be introduced to the foot 3 in the knitting machine needle 1. In particular, it prevents the transmission of the impact energy to the hook 16.
  • the recess 24, 37, 38 and 41, 42, 43, 44, 45, 46 may also be formed according to Figure 8 or Figure 9 as a non-continuous recess. This is illustrated in FIGS. 8 and 9 using the example of the recess 24, which has a bottom 48 there. The bottom 48 in turn contributes to the stiffening. It makes it possible to leave on both sides of the recess 24 particularly narrow webs 31, 32, without the Knitting machine needle thereby too weak in terms of their stability. Similar to FIG. 7, a damping material filling the respective recess 24 can be arranged on the base 48.
  • a knitting machine needle 1 with a foot 3 protruding from its needle body 2 and a shank 15 extending from the needle body to a hook 16 has a deflector 18 which is arranged between the hook 16 and the foot 3.
  • the deflection 18 is provided with at least one recess 24 which changes the characteristic impedance of the deflection 18 locally and leads to the reduction of hook fractures on impact on the foot 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (10)

  1. Aiguille pour machine à tricoter (1), avec un corps d'aiguille (2) comportant au moins un talon (3) et un crochet (16) et présentant entre le crochet (16) et le talon (3) au moins une courbe en méandre (18), caractérisée en ce que la courbe en méandre (18) est dotée d'au moins un évidement (24) qui s'étend au long de la courbe en méandre (18) avec ou sans interruptions.
  2. Aiguille pour machine à tricoter selon la revendication 1, caractérisée en ce que la courbe en méandre (18) est formée d'une première section (21) s'étendant dans la direction longitudinale du corps, d'une deuxième section (22), s'étendant perpendiculairement par rapport à celle-ci et d'une troisième section (23) qui s'étend à nouveau dans la direction longitudinale du corps et en ce que la deuxième section (22) est disposée entre la première section (21) et la troisième section (23) et forme avec celles-ci à chaque fois un angle essentiellement droit.
  3. Aiguille pour machine à tricoter selon la revendication 2, caractérisée en ce que la première section (21), la deuxième section (22) et la troisième section (23) possèdent une hauteur concordante (H).
  4. Aiguille pour machine à tricoter selon la revendication 2, caractérisée en ce que la hauteur (H) de la première section (21), de la deuxième section (22) et de la troisième section (23) est inférieure à 1/3, 1/4 ou de préférence 1/5 de la hauteur du corps d'aiguille (NH).
  5. Aiguille pour machine à tricoter selon la revendication 1, caractérisée en ce que l'évidement (24) s'étend sur toute la longueur du méandre (18).
  6. Aiguille pour machine à tricoter selon la revendication 1, caractérisée en ce que l'évidement (24) prend la forme d'une fente.
  7. Aiguille pour machine à tricoter selon la revendication 6, caractérisée en ce que la fente au niveau du méandre (18) présente des angles arrondis dont le rayon R est supérieur à la largeur de la fente.
  8. Aiguille pour machine à tricoter selon la revendication 1, caractérisée en ce que plusieurs évidements (24, 37, 38) sont prévus dans la zone du méandre (18).
  9. Aiguille pour machine à tricoter selon la revendication 1, caractérisée en ce que, en plus du talon (3), il est prévu au moins un autre talon (3').
  10. Jeu d'aiguilles composé d'aiguilles pour machine à tricoter et d'au moins une aiguille à tricoter selon la revendication 1, caractérisé en ce que les aiguilles à tricoter (1, 34, 35, 36) possèdent des talons (3) en des endroits différents.
EP04015439A 2003-07-22 2004-07-01 Aiguille pour machine à tricoter Expired - Lifetime EP1500733B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333172 2003-07-22
DE10333172A DE10333172B4 (de) 2003-07-22 2003-07-22 Strickmaschinennadel

Publications (2)

Publication Number Publication Date
EP1500733A1 EP1500733A1 (fr) 2005-01-26
EP1500733B1 true EP1500733B1 (fr) 2007-08-22

Family

ID=33482998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04015439A Expired - Lifetime EP1500733B1 (fr) 2003-07-22 2004-07-01 Aiguille pour machine à tricoter

Country Status (6)

Country Link
US (1) US6892556B2 (fr)
EP (1) EP1500733B1 (fr)
JP (1) JP4343786B2 (fr)
KR (1) KR100605242B1 (fr)
CN (1) CN100564637C (fr)
DE (2) DE10333172B4 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101072909B (zh) * 2004-12-07 2011-11-09 福原机针株式会社 针织圆机用部件
EP1988198B1 (fr) * 2007-05-03 2010-03-03 Groz-Beckert KG Ensemble d'outils et barre pour machine à tricoter de type chaîne
EP2045384B1 (fr) * 2007-10-02 2012-08-22 Groz-Beckert KG Aiguille pour un métier à mailles jetées
EP2172584B1 (fr) * 2008-10-02 2013-01-09 Groz-Beckert KG Aiguille de machine à tricoter dotée d'un arc à méandre fendu
KR100952118B1 (ko) 2009-11-12 2010-04-08 쿨패브릭주식회사 편물장치용 래치니들
EP2540889B1 (fr) * 2010-07-06 2016-08-17 Groz-Beckert KG Système de tricot doté de canaux de guidage aplatis
PT2927360T (pt) * 2014-04-03 2017-04-20 Groz Beckert Kg Ferramenta de tricotar para máquinas de tricotar
CN109371562B (zh) * 2018-12-24 2020-03-10 福建省精新科技制针有限公司 一种高强高耐磨织针
EP3690095B1 (fr) * 2019-01-31 2022-05-18 Groz-Beckert KG Aiguille du métier à tricoter et système de tricotage

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2123971A1 (de) * 1970-05-20 1971-12-02 Vyzkumny ustav pletarzsky, Brunn (Tschechoslowakei) Arbeitselement einer Strickmaschine mit mindestens einem Nadelfuß
DE2408567A1 (de) * 1974-02-22 1975-09-04 Groz & Soehne Theodor Zungennadel fuer strickmaschinen
US4036036A (en) * 1976-03-22 1977-07-19 The Torrington Company Latch needle for knitting machines
DE2820925C2 (de) * 1978-05-12 1982-11-18 Sulzer Morat Gmbh, 7024 Filderstadt Gestanztes Strickwerkzeug für Strickmaschinen
DE3014751C2 (de) * 1980-04-17 1982-06-16 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Gestanztes Strickwerkzeug für Strick- oder Wirkmaschinen
JPS61239065A (ja) * 1985-04-12 1986-10-24 福原ニ−ドル株式会社 丸編機用のメリヤス板針およびその製造方法
DE3706856C1 (de) * 1987-03-04 1988-03-03 Groz & Soehne Theodor Gestanztes Strickwerkzeug fuer Textilmaschinen,insbesondere Strick- und Wirkmaschinen
DE3843420C1 (fr) * 1988-12-23 1989-11-30 Theodor Groz & Soehne & Ernst Beckert Nadelfabrik Kg, 7470 Albstadt, De
US5154069A (en) * 1991-09-12 1992-10-13 Exeltor Inc. Knitting needle having force reduction portion
CN2178245Y (zh) * 1993-05-06 1994-09-28 上海织针三厂 圆纬机用织针
DE19604954C1 (de) * 1996-02-10 1997-02-27 Groz & Soehne Theodor Gestanztes Strickwerkzeug
DE19740985C2 (de) * 1997-09-18 1999-09-30 Groz Beckert Kg Gestanztes Strickwerkzeug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US6892556B2 (en) 2005-05-17
KR100605242B1 (ko) 2006-07-28
CN1576428A (zh) 2005-02-09
DE502004004703D1 (de) 2007-10-04
KR20050011705A (ko) 2005-01-29
DE10333172A1 (de) 2005-04-07
JP4343786B2 (ja) 2009-10-14
EP1500733A1 (fr) 2005-01-26
JP2005048352A (ja) 2005-02-24
DE10333172B4 (de) 2006-01-19
US20050016222A1 (en) 2005-01-27
CN100564637C (zh) 2009-12-02

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