EP0148972B1 - Aiguille à clapet pour les machines de fabrication de tricot - Google Patents

Aiguille à clapet pour les machines de fabrication de tricot Download PDF

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Publication number
EP0148972B1
EP0148972B1 EP84105618A EP84105618A EP0148972B1 EP 0148972 B1 EP0148972 B1 EP 0148972B1 EP 84105618 A EP84105618 A EP 84105618A EP 84105618 A EP84105618 A EP 84105618A EP 0148972 B1 EP0148972 B1 EP 0148972B1
Authority
EP
European Patent Office
Prior art keywords
needle
latch
slot
shank
lateral
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
Application number
EP84105618A
Other languages
German (de)
English (en)
Other versions
EP0148972A3 (en
EP0148972A2 (fr
Inventor
Groz & Sohne & Ernst Beckert Nadelfabrik Commandit-Gesellschaft 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 EP0148972A2 publication Critical patent/EP0148972A2/fr
Publication of EP0148972A3 publication Critical patent/EP0148972A3/de
Application granted granted Critical
Publication of EP0148972B1 publication Critical patent/EP0148972B1/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 machines for the manufacture of knitted fabrics, with a pivotably mounted needle tongue, the bearing surface of which has wedge-shaped flanks on the back of the tongue, and with the contact surface on the tongue back adapted bearing surfaces on the upper edges of the side surfaces of the area below the tongue axis with an opening to the lower edge of the needle shaft provided needle slot.
  • the longitudinal needle slot ends in the area of the contact surfaces at the upper edges of the side surfaces of the longitudinal needle slot, the bottom of the longitudinal needle slot in this area becoming flatter towards the upper edge of the needle shaft.
  • the needle tongue strikes hard against the abovementioned bearing surfaces with its back, which over time leads to destruction of the needle tongue and the needle shaft in the case of more highly stressed latch needles.
  • the latch needle mentioned at the outset is characterized according to the invention in that in the two shaft cheeks delimiting the longitudinal slot, at least one area of increased elastic deformability is formed below the contact surfaces by a side slot of predetermined depth.
  • the depth of the side slots formed in the cheek pieces can be dimensioned in consideration of the elastic deformability to be achieved in the area of the contact surfaces for the tongue back.
  • the respective side slot can also be formed continuously through the associated shaft cheek, so that the corresponding contact surface is arranged on a flexible, thin web which is delimited on one side by the side slot and which can deform elastically.
  • each side slit is arranged to run essentially parallel to the longitudinal axis of the needle and / or to lie essentially centrally to the associated contact surface.
  • the side slots formed in the shaft cheeks can either lie within the area of the longitudinal needle slot or extend beyond the longitudinal needle slot into the shaft. In the latter case, through the side slots, at least in the area of the shaft, a continuous slot-like opening can be delimited, which increases the elastic deformability in the area of the shaft.
  • the latch needle shown in the drawing in various embodiments has a needle shaft 1, a freely pivotable needle tongue 2 and a needle hook 3 which adjoins the needle shaft 1 in the usual manner.
  • a longitudinal needle slot 4 is formed in the needle shaft 1 and is provided with an opening 6 to the lower edge of the needle shaft in the areas below the tongue axis 5.
  • the tongue back has wedge-shaped flanks (see FIGS. 2, 5 and 7), which are already present even with the usual rounding of the tongue back.
  • the longitudinal needle slot 4 is delimited by two side cheeks 8, 9, in which 4 contact surfaces 10 are formed on the upper edges of the side surfaces of the longitudinal needle slot for the needle tongue 2 located in the reserve (FIG. 1), which are adapted to the contact surface 7 on the tongue back.
  • this area of increased elastic deformability is formed by two side slots 11 which are arranged in the two shaft cheeks 8, 9 and are in alignment with one another and penetrate the shaft cheeks 8, 9 and which run essentially parallel to the longitudinal axis of the needle (cf. Fig. 1) are aligned. It can be seen from FIGS. 1 and 3 that each side slot 11 is arranged essentially in the center of the associated contact surface 10. In addition, the two side slots 11 extend beyond the longitudinal needle slot 4 delimited at 12 by a curved base part and into the needle shaft 1. A continuous slot-like opening 13 is delimited by the side slots 11 in the region of the needle shaft.
  • the bearing surfaces 10 are arranged on two, clamped, thin, flexible webs 14, which are bounded on one side by the side slots 11 and which are elastically soft and resilient under the effect of the impact of the needle tongue 2 are.
  • the thickness of the webs 14 can be selected in each case in accordance with the degree of elastic deformability to be achieved.
  • the longitudinal slot 4 is dimensioned such that its curved bottom part 12 adjoining the opening 6 ends at a point 15 (FIG. 3) of the upper edge of the needle shaft which lies before the end of the opened needle tongue 2 4 to 8, the arrangement is such that the longitudinal needle slot 4 has a short first longitudinal slot slot portion 4a containing the opening 6 to the lower edge of the needle shaft, to which a second longitudinal slot slot portion 4b adjoins, the length of which is 15 Exceeds the end of the open needle tongue 2 and which has a substantially flat or slightly curved bottom part 12a, which is followed by a curved bottom part 12b which runs into the upper edge of the needle shaft.
  • the substantially flat bottom part 12a of the second longitudinal slot portion 4b is lower than half the height of the needle shaft; the contact surfaces 10 for the tongue back are arranged above the second needle slot section 4b and there above the rectilinear bottom part 12a (cf. FIG. 8).
  • the areas of increased elastic deformability are formed by side slots 11 of predetermined depth arranged in the cheek pieces 8, 9 and aligned with one another.
  • the side slots 11a are worked into the shaft cheeks 8, 9 from the outside, for example milled in, and do not extend into the longitudinal needle slot 4. They are in turn aligned parallel to the longitudinal axis of the needle and arranged approximately centrally to the respectively assigned contact surface 10, which means that each side slit 11a extends into the second longitudinal slot portion 4b and ends at a distance behind the support surface 10.
  • the flexible webs 14 delimited by the side slots 11a are in this case less elastic than in the embodiment according to FIGS. 1 to 3, where the side slots 11 are continuous.
  • the degree of elastic deformability of the webs 14 carrying the support surfaces 10 can be adjusted according to the respective requirements.
  • the formation of the side slots 11 could be made at least in the area of the longitudinal needle slot 4 corresponding to the embodiment according to FIGS. 4, 5, whereby the longitudinal needle slot 4 would be closed to the side.
  • FIGS. 6 to 8 differs from that according to FIGS. 4 to 5 only in that the side slots are not as in 11a. only reach a certain depth, but - according to the embodiment according to FIGS. 1 to 3 - are formed continuously. They are therefore designated 11.
  • a side slot 11, 11a on each side of the needle shaft 1 instead of a side slot 11, 11a on each side of the needle shaft 1, a plurality of side slots or side slots lying one above the other with a cross-sectional shape deviating from the U-shape, for example with a wedge-shaped or rounded cross-sectional shape, could also be used. In individual cases, it could also be considered to form the areas of increased elastic deformability through holes (possibly blind holes) or corresponding recesses in the side cheeks 8, 9 and / or the needle shaft 1.

Landscapes

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

Claims (7)

1. Aiguille à palette pour des machines de fabrication de tricots, comprenant une palette d'aiguille (2) montée pivotante dont la surface d'appui (7) sur le dos de la palette présente des flancs convergeant en forme de coin, et des surfaces d'appui (10), adaptées à la surface d'appui sur le dos de la palette, réalisées sur les bords supérieurs des faces latérales de la fente longitudinale (4) ménagée dans l'aiguille et munie dans la zone située au-dessous de l'axe (5) de la palette d'une ouverture (6) débouchant en direction du bord inférieur du corps d'aiguille, caractérisée en ce que dans les deux joues (8, 9) du corps délimitant la fente longitudinale (4), au moins une zone (11, 11a) de déformabilité élastique élevée formée par une fente latérale (11a) d'un profondeur prédéterminée est réalisée en dessous des surfaces d'appui (10).
2. Aiguille à palette selon la revendication 1, caractérisée en ce que la fente latérale (11) traverse de part en part la joue correspondante (8, 9) du corps.
3. Aiguille à palette selon la revendication 1 ou 2, caractérisée en ce que chaque fente latérale (11, 11a) s'étend pour l'essentiel parallèlement à l'axe longitudinal de l'aiguille.
4. Aiguille à palette selon l'une quelconque des revendications 1 à 3, caractérisée en ce que chaque fente latérale (11, 11a) est pour l'essentiel en position médiane par rapport à la surface d'appui (10) correspondante.
5. Aiguille à palette selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les fentes latérales (11, 11a) s'étendent au-delà de la fente longitudinale (4) de l'aiguille jusque dans le corps (1).
6. Aiguille à palette selon la revendication 5, caractérisée en ce qu'une ouverture (13) de passage en forme de fente, est délimitée par les fentes latérales (11,11a), au moins dans la zone du corps (1).
7. Aiguille à palette selon l'une quelconque des revendications 1 à 6, comportant une fente longitudinale qui présente une première partie de fente longitudinale contenant l'ouverture débouchant vers le bord inférieur du corps d'aiguille et une deuxième partie de fente longitudinale adjacente dont la longueur dépasse l'extrémité de la palette ouverte et qui est plus profonde que la demi-hauteur du corps d'aiguille, les surfaces d'appui pour le dos de la palette se trouvant au-dessus de la deuxième partie de la fente de l'aiguille, caractérisée en ce que la partie des fentes latérales (11, 11a) s'étendant dans la deuxième partie (4b) de la fente longitudinale de l'aiguille se termine à distance derrière les surfaces d'appui (10).
EP84105618A 1983-08-27 1984-05-17 Aiguille à clapet pour les machines de fabrication de tricot Expired EP0148972B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3331030 1983-08-27
DE3331030A DE3331030C1 (de) 1983-08-27 1983-08-27 Zungennadel fuer Maschinen zur Herstellung von Maschenware

Publications (3)

Publication Number Publication Date
EP0148972A2 EP0148972A2 (fr) 1985-07-24
EP0148972A3 EP0148972A3 (en) 1986-10-08
EP0148972B1 true EP0148972B1 (fr) 1988-04-06

Family

ID=6207660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105618A Expired EP0148972B1 (fr) 1983-08-27 1984-05-17 Aiguille à clapet pour les machines de fabrication de tricot

Country Status (5)

Country Link
US (1) US4656841A (fr)
EP (1) EP0148972B1 (fr)
JP (1) JPS6071751A (fr)
KR (1) KR860000950B1 (fr)
DE (2) DE3331030C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324232C2 (de) * 1993-07-20 2002-05-29 Sipra Patent Beteiligung Zungennadel für Maschinen zur Herstellung von Maschenware
DE19512375C1 (de) * 1995-04-01 1996-06-20 Groz & Soehne Theodor Zungennadel für Maschinen zur Herstellung von Maschenware
DE502006004377D1 (de) * 2006-06-21 2009-09-10 Groz Beckert Kg Zungennadel für maschenbildende Textilmaschine
EP1873287B1 (fr) * 2006-06-26 2012-01-25 Groz-Beckert Kommanditgesellschaft Aiguille à clapet pour une machine textile produisant des mailles
JP6970656B2 (ja) * 2018-07-04 2021-11-24 株式会社オービット・トレーディング 編地の製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069812B (fr) *
US1764342A (en) * 1929-07-03 1930-06-17 Gotham Knitbac Machine Corp Knitting needle
DE1026913B (de) * 1954-09-09 1958-03-27 Paul Buechner Nadel fuer Strick- und Wirkmaschinen
US3331218A (en) * 1964-07-10 1967-07-18 Wirkmaschinenbau Karl Marx Veb Knitting machine having laterally deflectable needles
DE2714607C3 (de) * 1977-04-01 1983-12-08 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Zungennadel für Maschinen zur Herstellung von Maschenware
JPS5415055A (en) * 1977-07-06 1979-02-03 Fukuhara Needle Co Ltd Composite needle and its production
GB1591613A (en) * 1977-10-20 1981-06-24 Grieve & Co Ltd T Latch needles
US4206680A (en) * 1978-09-08 1980-06-10 Bay Charles L Keying improvement for clarinets
DE3014751C2 (de) * 1980-04-17 1982-06-16 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Gestanztes Strickwerkzeug für Strick- oder Wirkmaschinen

Also Published As

Publication number Publication date
EP0148972A3 (en) 1986-10-08
JPS6158582B2 (fr) 1986-12-12
US4656841A (en) 1987-04-14
KR850002495A (ko) 1985-05-13
JPS6071751A (ja) 1985-04-23
DE3331030C1 (de) 1984-10-04
EP0148972A2 (fr) 1985-07-24
DE3470331D1 (en) 1988-05-11
KR860000950B1 (ko) 1986-07-23

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