EP2065498B1 - Aiguille à clapet - Google Patents

Aiguille à clapet Download PDF

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Publication number
EP2065498B1
EP2065498B1 EP20070023197 EP07023197A EP2065498B1 EP 2065498 B1 EP2065498 B1 EP 2065498B1 EP 20070023197 EP20070023197 EP 20070023197 EP 07023197 A EP07023197 A EP 07023197A EP 2065498 B1 EP2065498 B1 EP 2065498B1
Authority
EP
European Patent Office
Prior art keywords
needle
latch
tongue
hook
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.)
Active
Application number
EP20070023197
Other languages
German (de)
English (en)
Other versions
EP2065498A1 (fr
Inventor
Armin Diebold
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.)
H Stoll GmbH and Co KG
Original Assignee
H Stoll GmbH and Co 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
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Application filed by H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
Priority to EP20070023197 priority Critical patent/EP2065498B1/fr
Priority to CN2008101823829A priority patent/CN101445998B/zh
Publication of EP2065498A1 publication Critical patent/EP2065498A1/fr
Application granted granted Critical
Publication of EP2065498B1 publication Critical patent/EP2065498B1/fr
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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
    • D04B35/04—Latch needles

Definitions

  • the invention relates to a latch needle for knitting machines with a needle shaft, a hook formed thereon and a pivotally mounted in the needle shaft tongue.
  • the DE 15 85 099 shows a latch needle, wherein the needle shaft tapers toward the needle hook, this taper is achieved in that the underside of the needle shaft has a rising toward the needle hook course. This reduces the cross section of the needle shaft towards the needle hook. A via the closed tongue to the needle hook sliding mesh learns by this cross-sectional reduction a smaller expansion, which facilitates the knocking off.
  • the taper of the needle shaft of this known needle causes the opening width of the needle hook is reduced, which is particularly disadvantageous when multiple threads or one in relation to the hook size relatively thick thread to be inserted in the needle hook.
  • the US 1,629,454 1 shows a needle with a needle hub bent upwards relative to the optical needle shaft according to the preamble of claim 1.
  • the present invention has for its object to provide a latch needle, which facilitates the knocking off a mesh and thereby avoids the disadvantages described above.
  • the object is achieved with a latch needle for knitting machines with the features of claim 1. Due to the indentation of the needle shaft underside, this initially has an upward course and finally a downward course. This makes it possible to achieve a reduction in the diameter of the needle in the region of the closed needle tongue and yet to maintain a sufficient opening width of the needle hook.
  • the reduction of the diameter of the needle in the region of the closed needle tongue avoids excessive widening of the stitch as it slides on the closed tongue and the needle hook. As a result, however, the opening width of the needle hook undergoes no constriction, even several threads or thick threads can be easily inserted into it.
  • the indentation begins at least approximately at the position of the needle shank, from which the closed tongue begins to protrude over the top of the needle shank.
  • the tongue by overhanging the top of the needle shaft, increases the diameter of the needle and thereby expands the loop. This is counteracted by the fact that the indentation reduces the needle diameter.
  • the reduction of the needle diameter through the indentation should be made wherever the tongue protrudes above the needle shank. Therefore, it is further advantageous if the indentation ends at least approximately at the point of the needle shaft, which is opposite to the tip of the closed tongue. The indentation then extends over the entire area of the needle which is critical for the stitching during knock-off.
  • the indentation has a rising slope, a straight section and a sloping slope. This contour of the indentation can be produced easily in terms of production, with the transitions between the straight section and the bevels preferably being rounded.
  • the angle of the rising slope to the horizontal may be at least approximately equal to the angle between the top of the closed tongue and the horizontal. This means that the enlargement of the needle diameter by the tongue in the region of the bevels complete is compensated by the indentation, so the mesh undergoes no widening.
  • the straight portion of the indentation may preferably extend at least approximately parallel to the underside of the needle shaft in front of the indentation. In the area of the straight line, the needle undergoes no further reduction of the cross section through the indentation. This ensures that the needle still has sufficient stability even in the area of the indentation.
  • the sloping slope of the indentation can advantageously be at least approximately tangential to the outer contour of the needle hook, d. H. the indentation ends with their bevels on the needle hook. It is further advantageous if the sloping slope of the indentation extends at least approximately parallel to the inner contour of the needle hook. If the slope runs tangentially to the outer contour and parallel to the inner contour of the hook ensures that the needle hook is not weakened by the indentation. The material thickness and thus the stability of the needle hook are then not affected by the indentation.
  • the in the Fig. 1 to 5 shown latch needle 1 has a needle hook 2, which includes a hook space 20.
  • the needle hook 2 is formed on a needle neck 3, which merges via a needle breast 4 in the needle shaft 6.
  • a needle tongue 5 is pivotally mounted in a tongue slot 60 at a pivot point 50.
  • the tongue 5 can by a mesh 100 of a in Fig. 1 shown opened position in a closed position, in the Fig. 2 to 5 is shown brought.
  • a tongue spring not shown here further positions of the tongue 5 can be realized as a half-open or half-closed position.
  • a mesh tension-reducing indentation 30 is provided at the bottom of the needle shaft 6 in the region of the needle neck 3.
  • the indentation 30 begins in the region of the articulation point 50 for the tongue 5 and extends to the bottom of the needle hook second
  • the indentation 30 has, in the region of the articulation point 50, a first rising bevel 31, which preferably rises from the underside of the needle shank 6 at an angle which corresponds to the angle of the closed tongue 5.
  • the slope 31 merges into a straight section 32, which preferably runs parallel to the underside of the needle shaft 6.
  • the section 32 is spaced so far from the needle bottom, that although a reduction of the mesh tension is achieved, but nevertheless a sufficient strength of the needle neck 3 is ensured.
  • the indentation 30 has a sloping bevel 33 which, in the example shown here, bears tangentially against the outer contour of the needle hook 2 and runs essentially parallel to the inner contour of the needle hook 2.
  • transitions between the straight portion 32 and the two slopes 31, 33 are rounded as well as the transition from the needle shaft 6 into the first slope 31.
  • the design of the indentation 30 shown here by way of example prevents a sudden expansion of a loop 100, without thereby reducing the opening width of the needle hook 2.
  • the Fig. 1 to 5 show the mesh 100 in different positions on the needle 1 during the knocking.
  • the loop 100 pivots the tongue 5 into its closed position and begins to slide on the top 52 of the tongue 5, such as Fig. 2 shows.
  • the slope 31 of the indentation 30, which runs approximately parallel to the upper side 52 of the tongue 5, ensures that the needle diameter does not increase in front of the articulation point 50 of the tongue 5 in comparison to the diameter of the needle 1 behind the articulation point 50, ie the mesh 100 no widening experiences.
  • Fig. 3 is the mesh 100 by further retraction of the needle 1 in the direction R of the double arrow P further moved on the tongue 5 to the front and is now at the transition of the slope 31 to the straight portion 32 of the recess 30th
  • Fig. 4 shows the mesh 100 at the end of the straight portion 32 of the recess 30 and at the beginning of the sloping slope 33rd
  • the mesh 100 By further retraction of the needle 1, the mesh 100 enters the in Fig. 5 shown position immediately before knocking off.
  • the mesh 100 By the movement of the mesh 100 on the tongue 5 and at the same time on the sloping slope 33 of the indentation 30, the mesh has experienced a widening, which, however, takes place gently and is gentle on the thread.
  • the embodiment of the needle 1 shown here is merely exemplary.

Landscapes

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

Claims (7)

  1. Aiguille à clapet pour des métiers à tricoter, comprenant une tige (6) d'aiguille, un bec (2) d'aiguille, qui y est formé, et un clapet (5) monté pivotant dans la tige (6) d'aiguille, dans laquelle le côté inférieur de la tige (6) d'aiguille a un creux (30) dans la région comprise entre le point (50) d'articulation du clapet (5) et le bec (2) de l'aiguille, caractérisée en ce que le creux (30) a un biseau (31) montant, un segment (32) droit et un biseau (33) descendant.
  2. Aiguille à clapet suivant la revendication 1, caractérisée en ce que le creux (30) commence au moins à peu près à l'endroit de la tige (6) de l'aiguille, à partir duquel le clapet (5) fermé commence à se trouver au-dessus du côté supérieur de la tige (6) de l'aiguille.
  3. Aiguille à clapet suivant la revendication 1 ou 2, caractérisée en ce que le creux (30) se termine au moins à peu près à l'endroit de la tige (6) de l'aiguille, qui est en face de la pointe du clapet (5) fermé.
  4. Aiguille à clapet suivant l'une des revendications 1 à 3, caractérisée en ce que l'angle du biseau (31) montant avec l'horizontale est au moins à peu près égal à l'angle entre le côté (52) supérieur du clapet (5) fermé et l'horizontale.
  5. Aiguille à clapet suivant l'une des revendications 1 à 4, caractérisée en ce que le segment (32) droit du creux (30) s'étend au moins à peu près parallèlement au côté inférieur de la tige (6) de l'aiguille avant le creux (30).
  6. Aiguille à clapet suivant l'une des revendications 1 à 5, caractérisée en ce que le biseau (33) descendant du creux (30) s'étend au moins à peu près tangentiellement au contour extérieur du bec (2) de l'aiguille.
  7. Aiguille à clapet suivant l'une des revendications 1 à 6, caractérisée en ce que le biseau (33) descendant du creux (30) s'étend au moins à peu près parallèlement au contour intérieur du bec (2) de l'aiguille.
EP20070023197 2007-11-30 2007-11-30 Aiguille à clapet Active EP2065498B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20070023197 EP2065498B1 (fr) 2007-11-30 2007-11-30 Aiguille à clapet
CN2008101823829A CN101445998B (zh) 2007-11-30 2008-11-28 舌针

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070023197 EP2065498B1 (fr) 2007-11-30 2007-11-30 Aiguille à clapet

Publications (2)

Publication Number Publication Date
EP2065498A1 EP2065498A1 (fr) 2009-06-03
EP2065498B1 true EP2065498B1 (fr) 2013-01-23

Family

ID=39367123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070023197 Active EP2065498B1 (fr) 2007-11-30 2007-11-30 Aiguille à clapet

Country Status (2)

Country Link
EP (1) EP2065498B1 (fr)
CN (1) CN101445998B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014115345B4 (de) * 2014-10-21 2019-04-25 Groz-Beckert Kg Maschinenstricknadel, Anordnung zur Maschenbildung sowie Verwendung dieser Anordnung in einer Strickmaschine
JP6930719B2 (ja) * 2017-02-13 2021-09-01 オルガン針株式会社 ベラ針

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1629454A (en) 1925-11-18 1927-05-17 Torrington Co Latch knitting needle
US2044324A (en) * 1935-10-04 1936-06-16 Charles L Page Latch knitting needle
DE1585099C2 (de) 1961-01-27 1978-10-26 Haase & Kuehn Kg, 7071 Leinzell Zungennadel
US5452593A (en) * 1993-05-28 1995-09-26 Exeltor Inc. Loop tension release notch to assist latch closing
CN2663469Y (zh) * 2003-12-18 2004-12-15 李榕健 一种针织机织针
CN1818181A (zh) * 2006-03-17 2006-08-16 顾建中 织针

Also Published As

Publication number Publication date
CN101445998B (zh) 2011-09-28
CN101445998A (zh) 2009-06-03
EP2065498A1 (fr) 2009-06-03

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