EP0149701A2 - Aiguille à clapet pour les machines textiles formant des mailles - Google Patents

Aiguille à clapet pour les machines textiles formant des mailles Download PDF

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Publication number
EP0149701A2
EP0149701A2 EP84105617A EP84105617A EP0149701A2 EP 0149701 A2 EP0149701 A2 EP 0149701A2 EP 84105617 A EP84105617 A EP 84105617A EP 84105617 A EP84105617 A EP 84105617A EP 0149701 A2 EP0149701 A2 EP 0149701A2
Authority
EP
European Patent Office
Prior art keywords
needle
tongue
spoon
latch
bearing bore
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
EP84105617A
Other languages
German (de)
English (en)
Other versions
EP0149701A3 (en
EP0149701B1 (fr
Inventor
Groz Sohne Ernst Becke Theodor
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
Theodor Groz and Soehne and Ernst Beckert Nadelfabrik 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 Theodor Groz and Soehne and Ernst Beckert Nadelfabrik KG filed Critical Theodor Groz and Soehne and Ernst Beckert Nadelfabrik KG
Publication of EP0149701A2 publication Critical patent/EP0149701A2/fr
Publication of EP0149701A3 publication Critical patent/EP0149701A3/de
Application granted granted Critical
Publication of EP0149701B1 publication Critical patent/EP0149701B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • D04B15/06—Sinkers
    • 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 latch needle for stitch-forming textile machines, with a needle shaft and with a bearing bore in a longitudinal slot of the needle shaft that is pivoted undamped about a tongue axis and has a bearing bore, which in the closed position with its spoon on the needle hook and in the reserve with the tongue back rests on contact surfaces in the area of the upper edge of the needle shaft.
  • the tongue of the latch needle is exposed to very high loads.
  • the needle tongue is pivoted between its closed position and its reserve at a frequency of up to 60 Hz and more, as is customary today, high acceleration and deceleration forces occur on the needle tongue.
  • These not only stress the needle tongue on bending, but there are considerable energies when the spoon hits the hook or the tongue back on the contact surfaces provided on the needle shaft absorbed by bending elastic deformation and destroyed by friction.
  • g tongue breaks or damage to the Zonnelagerun and the needle shaft, occur.
  • the object of the invention is therefore to provide a latch needle which is particularly suitable for high-speed machines, the latch of which can absorb high loads without the risk of damage to the latch or to the needle itself.
  • the latch needle mentioned at the outset is characterized according to the invention in that the needle tongue has at least one continuous recess in the region between its bearing bore and the spoon.
  • the inertial mass of the needle latch on the one hand reduced, so that the loading to the p ruchung the needle latch decreased by the occurring acceleration or deceleration forces and impact energy upon impact of the bucket on the hook or the back of the tongue is reduced to the associated impact surfaces, on the other hand, the elastic bending conditions of the needle tongue are improved at the same time, with the result that local stress peaks which otherwise occur when they are opened are reduced.
  • the latch needle can therefore absorb the loads occurring even in use in very fast-running machines, for example circular knitting machines, over long operating periods without the risk of damage to the needle tongue or the tongue bearing.
  • the continuous recess has a slit-like, elongated shape, it being possible for it to be wider in the vicinity of the bearing bore than in the vicinity of the spoon in order to do so to achieve an adaptation to the approximately wedge-shaped shape of the needle tongue in cross section.
  • the tongue can also have a number of circular, continuous recesses which are arranged one behind the other at a distance. It is expedient if the recess is arranged symmetrically to the longitudinal central plane of the needle tongue containing the bearing bore axis.
  • this long extension arranged on one side naturally represents a particularly high load on the actual needle tongue, and in particular its part interacting with the needle hook, it is provided with continuous recesses in the form of circular holes in order to reduce its weight or, overall, is designed with a reduced wall thickness compared to the actual needle tongue .
  • the actual needle tongue itself is massive with these repeating needles, which cannot be compared with normal latch needles, whereby a spoon is not used.
  • the latch needle shown in various embodiments in the drawing has a needle shaft 1 with a needle hook 2 arranged at the end.
  • a longitudinal needle slot 3 which is provided with an opening 4 leading to the lower edge of the needle shaft and in which a needle tongue 5 is pivotably supported in an undamped manner about a tongue axis 6.
  • the tongue axis 6 is formed by two bearing pins 7 pressed out of the shaft cheeks laterally delimiting the longitudinal needle slot 3, on which the needle tongue 5 is mounted by means of a bearing bore 8.
  • the needle tongue 5 carries at one end a spoon 9 with which it covers the tip of the needle hook 2 in the closed position.
  • the needle tongue 5 is provided with at least one continuous recess in all the illustrated embodiments:
  • a continuous, elongated, slot-like recess 11 is provided in the needle tongue 5 in the specified area, which is wider in the vicinity of the bearing bore 8 than in the vicinity of the spoon 9 and therefore with the neighboring ones Side faces 12 of the webs 13, which are approximately wedge-shaped in the side view, delimitate thin webs 13 which are connected at the ends by the material of the needle tongue 5 and which in turn produce a connection between the part of the needle tongue 5 containing the bearing bore 8 and its spoon 9.
  • the continuous, elongated recess 11 not only causes a reduction in the inert mass of the needle tongue 5, but also results in a favorable dynamic bending behavior of the needle tongue.
  • FIGS. 3, 4 essentially corresponds to that according to FIGS. 1, 2.
  • the same parts are therefore again provided with the same reference numerals; they require no further explanation.
  • the needle tongue 5 ver.
  • the circular recesses 19 can have the same diameter; their diameter can also progressively decrease from the bearing bore 8 to the spoon 9.
  • the recesses 19 can also be designed differently, for example elongated, instead of the cross-sectional shape shown; it is also conceivable not to arrange them in a row with their axes in the common plane 18, but to distribute them over the associated side surfaces of the needle tongue 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP84105617A 1983-08-27 1984-05-17 Aiguille à clapet pour les machines textiles formant des mailles Expired EP0149701B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3331031A DE3331031C2 (de) 1983-08-27 1983-08-27 Zungennadel für maschenbildende Textilmaschinen
DE3331031 1983-08-27

Publications (3)

Publication Number Publication Date
EP0149701A2 true EP0149701A2 (fr) 1985-07-31
EP0149701A3 EP0149701A3 (en) 1986-10-08
EP0149701B1 EP0149701B1 (fr) 1988-08-10

Family

ID=6207661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105617A Expired EP0149701B1 (fr) 1983-08-27 1984-05-17 Aiguille à clapet pour les machines textiles formant des mailles

Country Status (5)

Country Link
US (1) US4601180A (fr)
EP (1) EP0149701B1 (fr)
JP (1) JPS6071750A (fr)
KR (1) KR860000951B1 (fr)
DE (2) DE3331031C2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8706529U1 (de) * 1987-05-07 1987-06-19 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Zungennadel für maschenbildende Textilmaschinen
DE19512375C1 (de) * 1995-04-01 1996-06-20 Groz & Soehne Theodor Zungennadel für Maschinen zur Herstellung von Maschenware
EP1584722B1 (fr) * 2004-04-06 2007-04-18 Groz-Beckert KG Aiguille à clapet pour une machine textile formant des mailles
EP1870502B1 (fr) * 2006-06-21 2009-07-29 Groz-Beckert KG Aiguille à clapet pour machine textile formant des mailles
EP2088228B1 (fr) * 2008-02-05 2011-10-19 Groz-Beckert KG Aiguille à clapet
EP2224048B1 (fr) * 2009-02-26 2011-08-31 Groz-Beckert KG Aiguille à clapet dotée d'une goupille axiale rotative

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596311A (en) * 1945-02-15 1952-05-13 American Vitos Company Inc Knitting needle
US3031867A (en) * 1958-07-28 1962-05-01 Groz & Soehne Theodor Latch needle for knitting machines or the like
US3728874A (en) * 1971-08-19 1973-04-24 Torrington Co Straddle latch needle
DE7640654U1 (de) * 1976-12-24 1977-04-21 Theodor Groz & Soehne & Ernst Beckert Nadelfabrik Kg, 7470 Albstadt Zungennadel fuer strickmaschinen
DE2714607C3 (de) * 1977-04-01 1983-12-08 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Zungennadel für Maschinen zur Herstellung von Maschenware
DE3014751C2 (de) * 1980-04-17 1982-06-16 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Gestanztes Strickwerkzeug für Strick- oder Wirkmaschinen
JPS6322931A (ja) 1986-07-16 1988-01-30 株式会社イナックス 小便器の洗浄方法及び装置

Also Published As

Publication number Publication date
EP0149701A3 (en) 1986-10-08
DE3331031A1 (de) 1985-03-14
JPS6071750A (ja) 1985-04-23
EP0149701B1 (fr) 1988-08-10
DE3331031C2 (de) 1985-07-11
JPS6125823B2 (fr) 1986-06-17
KR860000951B1 (ko) 1986-07-23
DE3473309D1 (en) 1988-09-15
KR850002496A (ko) 1985-05-13
US4601180A (en) 1986-07-22

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