EP2172584A1 - Aiguille de machine à tricoter dotée d'un arc à méandre fendu - Google Patents

Aiguille de machine à tricoter dotée d'un arc à méandre fendu Download PDF

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Publication number
EP2172584A1
EP2172584A1 EP08165777A EP08165777A EP2172584A1 EP 2172584 A1 EP2172584 A1 EP 2172584A1 EP 08165777 A EP08165777 A EP 08165777A EP 08165777 A EP08165777 A EP 08165777A EP 2172584 A1 EP2172584 A1 EP 2172584A1
Authority
EP
European Patent Office
Prior art keywords
knitting machine
machine needle
meander
narrow side
needle
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
EP08165777A
Other languages
German (de)
English (en)
Other versions
EP2172584B1 (fr
Inventor
Eckhard Fehrenbacher
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
Priority to EP08165777A priority Critical patent/EP2172584B1/fr
Priority to KR1020090090811A priority patent/KR101118027B1/ko
Priority to CN2009102116923A priority patent/CN101724975B/zh
Priority to TW098133327A priority patent/TWI399468B/zh
Priority to US12/571,813 priority patent/US7874183B2/en
Priority to JP2009229699A priority patent/JP5819038B2/ja
Publication of EP2172584A1 publication Critical patent/EP2172584A1/fr
Application granted granted Critical
Publication of EP2172584B1 publication Critical patent/EP2172584B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind

Definitions

  • the invention relates to a knitting machine needle.
  • the DE 103 33 172 A1 has proposed to alleviate or remedy the above problem, forming a slot extending transversely through the needle with a latch needle in the meandering arc. This subdivides the meander arc into an upper and a lower branch and thus gives the needle an additional elasticity. Although this solution works well, there are other options sought to increase the life of knitting machine needles at increased operating speed.
  • the DE 197 40 985 C2 suggests in a meandering needle to provide these in places with lateral shallow recesses to provide space for lubricants in the flanks of the knitting machine needles and to reduce the friction of the needles with the needle channel wall.
  • the DE 36 12 316 proposes to form in the side surfaces of a meander along longitudinal flat grooves, so that the needle receives an I-profile in cross section.
  • the knitting machine needle has a needle body which is provided between hook and foot with at least one meandering bow.
  • a slot is formed, which extends at least through the upper or the lower narrow side.
  • the meander arc slot extends into or through the shank parallel to the two flat sides or flanks of the knitting machine needle.
  • the meander arc slot may be empty or, if necessary, also filled with a material that is different from the material of the other needle body. If the needle body is made of steel, the meander arch slot can be filled with another metal or with plastic. He can also stay free and fill in operation, for example, with oil and textile abrasion. This effect can be deliberately exploited to achieve damping effect in the slotted zone of the meander arc. It is preferred that the meander arc slot in the delivery state of the knitting machine needle is freely continuous.
  • the knitting machine needle according to the invention has an increased service life.
  • the meander arch slot causes a reduction of needle breaks, even and especially at high working speed.
  • the needle shaft has such a high stability that the positioning of the hook during the knitting process is precise even at high operating speeds.
  • the meander arc has at least one section extending transversely to the longitudinal direction and two sections adjoining the latter and extending in the needle longitudinal direction.
  • the meander arch slot cuts at least one of these sections. Preferably, it cuts two of these sections or all three, where it can pass from one narrow side to the other narrow side of the knitting machine needle. It may also prove to be expedient to form the meander arc slot so that it only one or completely severed two of said sections and only cuts one or two of said sections, but not completely severed.
  • the meander arc slot has a hook-side end and a foot-side end.
  • the two ends are formed by narrow surfaces, which may be straight or rounded. It is preferred to arrange the surface in question obliquely to the longitudinal axis of the knitting machine needle.
  • stability and damping properties of the needle can be influenced and natural resonances can be suppressed or damped.
  • the meander arch slot has proven to be advantageous to produce the meander arch slot in a plane or in alignment with the tongue slot. It may be advantageous if the Guranderbogenschlitz has the same width as the tongue slot.
  • the meander arch slot can consistently have a single uniform width. However, it is also possible to provide slots of different widths. This measure can also be used to simultaneously tune the knitting machine needle with high stability of the needle shaft to high working speeds.
  • FIG. 1 is a knitting machine needle 1 illustrated, which is designed as a latch needle. It has a needle body 2, on which a foot 3 is formed. This serves to drive the knitting machine needle 1, which is mounted in a channel of a needle bed, such as a knitting cylinder or a dial.
  • the needle body 2 forms a longitudinally extending shaft 4, at the end of a hook 5 is arranged.
  • the hook 5 is associated with a tongue 6 which is pivotally mounted to the hook 5 to open and close.
  • To receive the tongue 6 is a tongue slot 7, the off FIG. 2 is apparent.
  • FIG. 2 shows a plan view of the upper narrow side 8 of the latch needle 1.
  • the shaft 4 also has a lower narrow side 9 and is also bounded by two side surfaces 11, 10, which are preferably flat and arranged parallel to each other.
  • the needle body 2 and / or the shaft 4 are provided with at least one, but preferably a plurality of meandering bends 12, 13, 14. In particular, however, at least one Guranderbogen 12 between the foot 3 and the hook 5 is arranged.
  • Each meander arc consists of at least two straight bar-shaped sections 15, 16 which extend in the needle longitudinal direction and a third section 17 arranged therebetween, which extends transversely approximately parallel to the foot 3.
  • each Guranderbogen 12, 13, 14 each forms a vertically extending step at which the sections 15, 16 are offset from each other.
  • the sections 15, 16 preferably each have a rectangular cross-section (with possibly rounded corners) and the height H.
  • their respective, in FIG. 1 vertical that is to say height H to be measured parallel to the foot 3, less than half the total height NH, which is to be measured from the highest elevation of the upper narrow side 8 to the lowest position of the lower narrow side 9.
  • a particular feature of the knitting machine needle 1 according to the invention consists in a meander arch slot 18 which extends in the needle longitudinal direction and is arranged on the meander bend 12 and optionally also on other meander bends 13, 14.
  • the meander arc slot 18 is according to FIG. 2 with the tongue slot 7 in a common plane E penetrates at least one of the narrow sides 8, 9. However, to both side surfaces 10, 11, it is closed. It is thus limited by mutually parallel, thin side walls 19, 20, between which the Guranderbogenschlitz 18 forming free space is formed.
  • the walls 19, 20 have such as in particular from the FIGS. 2 and 3 shows a preferably uniform and mutually consistent thickness, which changes again in the needle longitudinal direction still in the perpendicular vertical direction and in one embodiment with the width of the meander arc slot 18 matches.
  • the meander arc slot 18 has the same width as the tongue slot 7, wherein the width of each of the distance between the respective side walls 19, 20 of the meander arc slot 18 and the side walls of the tongue slot 7 and is transverse to the needle longitudinal direction to measure.
  • the meander arc slot 18 may, as FIG. 4 clearly shows through all three sections 15, 16, 17 extend. Both on the foot-facing side, as well as on the Hook-facing side of the meander arc slot 18 terminates in each case on an end face 21, 22, the flat or, as in FIG. 4 illustrated, can also be rounded.
  • the flat or rounded end surfaces 21, 22 are preferably oriented obliquely to the longitudinal direction of the shaft 4. They close with the needle longitudinal direction L, which in FIG. 4 symbolically indicated, in each case an acute angle w1, w2.
  • the length of the Guranderbogenschlitzes is significantly greater than its width. Due to the inclination and / or curvature of the end surfaces, the length L1 of the meander arc slot 18 on the upper narrow side 8 is different from the length L2 of the meander arc slot 18 on the lower narrow side 11. In the given embodiment L1 is greater than L2.
  • the meander arc slot 18 in the present embodiment is continuously open, that is, between the end faces 21 and 22 of the meander arc slot 18 is empty and without connection between the side walls 19, 20.
  • such compounds can be provided as needed, for example in the form of fillings or in Form of a one-piece, seamless material connection between the side walls 19, 20, for example at one or more points of the sections 15-17.
  • the side walls 19, 20 are preferably flat on both the outer side surfaces 10, 11 and their inner sides. However, they may also be bent towards each other so that the meander arc slot 18 is narrowed at one or more locations.
  • the side walls 19, 20 may abut each other or be connected to each other, for example by spot welding.
  • the knitting machine needle 1 described so far operates as follows:
  • the knitting machine needle 1 is located in a needle channel of a needle bed.
  • the foot 3 is in communication with a needle lock, which moves the needle in the longitudinal direction L forward or backward, that is, expels or retracts.
  • the hook 5 performs a quick reciprocating motion to pick up threads and pull through existing stitches.
  • the tongue 6 beats constantly back and forth. The occurring during movement of the needle, transmitted to the foot 3 shocks run through the shaft 4 in the direction of and to the hook 5.
  • the meander arc slot 18 on the one hand ensures that the drive movement of the foot 3 is properly and accurately transmitted to the hook 5 , The hook 5 is thus precisely positioned.
  • the meander arc slot ensures that impacts that could damage the hook 5 are kept away from it.
  • FIG. 5 illustrates a modified embodiment of the knitting machine needle according to the invention 1. It is true to the formation of Telanderbogenschlitzes 18 with the above-described knitting machine needle 1 match.
  • the meander arc slot 18 passes through the sections 15 and 17 of the meander arc 12 completely and the section 16 only partially.
  • the length L2 is significantly larger than the length L1 here.
  • the meander arc slot 18 has a greater length at the lower narrow side 9 than at the upper narrow side 8. Again, however, it is oriented parallel to the tongue slot 7. In addition, it has a uniform width, preferably with the width of the tongue slot coincides. The width can also be set differently.
  • the meander arc slot 18 in this case has split end surfaces 21a, 21b, 22a, 22b.
  • the end surface portions 21a, 21b taper toward each other.
  • the end surface portions 22a, 22b taper toward each other. They each meet at a point within the meander arc slot 18, which marks the narrowest inner point of the meander arc slot 18 and defines the distance L3. This is less than at least one of the distances L1, L2.
  • the meander arc slot 18 may have a uniform width throughout, or as FIG. 6 shows, be provided with a step 23. At this stage, the width of the meander arc slot 18 may change from a low value to a higher value.
  • the step preferably smoothly connects to the end face portions 21b or alternatively smoothly to the end face portions 21a, 22a bordering the lower and upper narrow faces 9 or 8, respectively.
  • the flexibility, stability, shock absorbing capacity, damping effect and fatigue strength of the shaft 4 can be set within wide limits and in each case suitably.
  • An inventive, formed as a meandering needle knitting machine needle 1 has at least one Guranderbogen 12 which is provided with a Guranderbogenschlitz 18 in the form of a parallel to the tongue slot vertical slot. This is limited by two side walls 19, 20, preferably oriented parallel to each other and include an open space.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP08165777A 2008-10-02 2008-10-02 Aiguille de machine à tricoter dotée d'un arc à méandre fendu Active EP2172584B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP08165777A EP2172584B1 (fr) 2008-10-02 2008-10-02 Aiguille de machine à tricoter dotée d'un arc à méandre fendu
KR1020090090811A KR101118027B1 (ko) 2008-10-02 2009-09-25 멘더링 슬릿 곡선부를 갖는 편물기 바늘
CN2009102116923A CN101724975B (zh) 2008-10-02 2009-09-30 带有曲折槽弯曲部的编织机织针
TW098133327A TWI399468B (zh) 2008-10-02 2009-10-01 具有蜿蜒曲狀狹縫之針織機織針
US12/571,813 US7874183B2 (en) 2008-10-02 2009-10-01 Knitting machine needle with meandering slit curve
JP2009229699A JP5819038B2 (ja) 2008-10-02 2009-10-01 蛇行状スリット曲線を備えた編み機の針

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08165777A EP2172584B1 (fr) 2008-10-02 2008-10-02 Aiguille de machine à tricoter dotée d'un arc à méandre fendu

Publications (2)

Publication Number Publication Date
EP2172584A1 true EP2172584A1 (fr) 2010-04-07
EP2172584B1 EP2172584B1 (fr) 2013-01-09

Family

ID=40210814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08165777A Active EP2172584B1 (fr) 2008-10-02 2008-10-02 Aiguille de machine à tricoter dotée d'un arc à méandre fendu

Country Status (6)

Country Link
US (1) US7874183B2 (fr)
EP (1) EP2172584B1 (fr)
JP (1) JP5819038B2 (fr)
KR (1) KR101118027B1 (fr)
CN (1) CN101724975B (fr)
TW (1) TWI399468B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438877B2 (en) 2010-07-06 2013-05-14 Groz-Beckert Kg Knitting system with flattened guide channels

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT2927360T (pt) * 2014-04-03 2017-04-20 Groz Beckert Kg Ferramenta de tricotar para máquinas de tricotar
PT3124664T (pt) * 2015-07-30 2020-03-23 Groz Beckert Kg Método e dispositivo para a formação de laço
EP3418434B1 (fr) * 2017-06-19 2019-05-01 Groz-Beckert KG Outil de machine à tricoter, en particulier aiguille à tricoter de machine à tricoter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3612316A1 (de) 1985-04-12 1986-10-30 Fukuhara Needle Co. Ltd., Wakayama Stricknadel und verfahren zu deren herstellung
DE8913293U1 (de) * 1989-11-10 1989-12-28 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Gestanztes Strickwerkzeug für Textilmaschinen
DE19740985C2 (de) 1997-09-18 1999-09-30 Groz Beckert Kg Gestanztes Strickwerkzeug
EP1437434A1 (fr) 2003-01-10 2004-07-14 Groz-Beckert KG Outil de tricotage et procédé pour former cet outil
DE10333172A1 (de) 2003-07-22 2005-04-07 Groz-Beckert Kg Strickmaschinennadel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1441591A (en) * 1918-08-28 1923-01-09 Pope Machine Company Knitting machine and needle therefor
DE19604954C1 (de) * 1996-02-10 1997-02-27 Groz & Soehne Theodor Gestanztes Strickwerkzeug
DE19822862C2 (de) * 1998-05-22 2001-05-17 Sipra Patent Beteiligung Strickmaschinennadel und damit ausgerüstete Strickmaschine
DE10341630B4 (de) * 2003-09-10 2006-11-16 Groz-Beckert Kg Zungennadel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3612316A1 (de) 1985-04-12 1986-10-30 Fukuhara Needle Co. Ltd., Wakayama Stricknadel und verfahren zu deren herstellung
DE8913293U1 (de) * 1989-11-10 1989-12-28 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Gestanztes Strickwerkzeug für Textilmaschinen
DE19740985C2 (de) 1997-09-18 1999-09-30 Groz Beckert Kg Gestanztes Strickwerkzeug
EP1437434A1 (fr) 2003-01-10 2004-07-14 Groz-Beckert KG Outil de tricotage et procédé pour former cet outil
DE10333172A1 (de) 2003-07-22 2005-04-07 Groz-Beckert Kg Strickmaschinennadel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438877B2 (en) 2010-07-06 2013-05-14 Groz-Beckert Kg Knitting system with flattened guide channels
EP2540889A3 (fr) * 2010-07-06 2013-05-29 Groz-Beckert KG Système de tricot doté de canaux de guidage aplatis

Also Published As

Publication number Publication date
US7874183B2 (en) 2011-01-25
TWI399468B (zh) 2013-06-21
EP2172584B1 (fr) 2013-01-09
KR101118027B1 (ko) 2012-02-27
CN101724975B (zh) 2012-11-14
KR20100038053A (ko) 2010-04-12
JP2010090527A (ja) 2010-04-22
CN101724975A (zh) 2010-06-09
JP5819038B2 (ja) 2015-11-18
TW201030201A (en) 2010-08-16
US20100083707A1 (en) 2010-04-08

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