EP0149701B1 - Zungennadel für maschenbildende Textilmaschinen - Google Patents
Zungennadel für maschenbildende Textilmaschinen Download PDFInfo
- Publication number
- EP0149701B1 EP0149701B1 EP84105617A EP84105617A EP0149701B1 EP 0149701 B1 EP0149701 B1 EP 0149701B1 EP 84105617 A EP84105617 A EP 84105617A EP 84105617 A EP84105617 A EP 84105617A EP 0149701 B1 EP0149701 B1 EP 0149701B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needle
- latch
- tongue
- spoon
- 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
Links
Images
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 when the spoon strikes the hook or the back of the tongue on the contact surfaces provided on the needle shaft, considerable energies are absorbed by elastic deformation and destroyed by friction.
- not only the spoon and the hook can be damaged, but also tongue breaks or damage to the tongue bearing on the needle shaft.
- latch needles are also known (US Pat. No. 3,728,874), in which the arrangement is reversed, i. H. the needle shaft is formed with a thin web and the needle tongue is provided in the region of its shaft with a longitudinal slit which extends from its end and into which the web of the needle shaft engages.
- 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 in that the needle tongue has at least one transverse, continuous recess in the region between its bearing bore and the spoon.
- the latch needle can thus absorb the loads occurring over a long period of operation, even when used in very fast-running machines, for example circular knitting machines, 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 adapt to the approximately wedge-shaped shape of the needle tongue achieve.
- the tongue can also have a number of circular, continuous recesses which are arranged at a distance from one another. It is expedient if the recess is arranged symmetrically to the longitudinal center 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 on its part which interacts with the needle hook, it is provided with continuous recesses in the form of circular holes 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 Arranged in the needle shaft 1 is 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 journals 7, which are pressed out of the shaft cheeks which temporarily limit the longitudinal needle slot 3 and on which the needle tongue 5 is supported 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 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 adjacent side surfaces 12 of the approximately wedge-shaped needle tongue 5 in the side view delimits thin webs 13 which are connected at the ends by the material of the needle tongue 5 and 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 is provided in the region between the bearing bore 8 and the spoon 9 with a number of circular, continuous recesses 19 which are designed in the form of cylindrical bores and with their axis in which the tongue axis 6 containing level 18 lying, are arranged one behind the other at a distance.
- the circular recesses 19 can have the same diameter; however, their diameters can also progressively become smaller 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 lying 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3331031 | 1983-08-27 | ||
DE3331031A DE3331031C2 (de) | 1983-08-27 | 1983-08-27 | Zungennadel für maschenbildende Textilmaschinen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0149701A2 EP0149701A2 (de) | 1985-07-31 |
EP0149701A3 EP0149701A3 (en) | 1986-10-08 |
EP0149701B1 true EP0149701B1 (de) | 1988-08-10 |
Family
ID=6207661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84105617A Expired EP0149701B1 (de) | 1983-08-27 | 1984-05-17 | Zungennadel für maschenbildende Textilmaschinen |
Country Status (5)
Country | Link |
---|---|
US (1) | US4601180A (ja) |
EP (1) | EP0149701B1 (ja) |
JP (1) | JPS6071750A (ja) |
KR (1) | KR860000951B1 (ja) |
DE (2) | DE3331031C2 (ja) |
Families Citing this family (6)
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 (de) * | 2004-04-06 | 2007-04-18 | Groz-Beckert KG | Zungennadel für maschenbildende Textilmaschine |
DE502006004377D1 (de) * | 2006-06-21 | 2009-09-10 | Groz Beckert Kg | Zungennadel für maschenbildende Textilmaschine |
EP2088228B1 (de) * | 2008-02-05 | 2011-10-19 | Groz-Beckert KG | Zungennadel |
EP2224048B1 (de) * | 2009-02-26 | 2011-08-31 | Groz-Beckert KG | Zungennadel mit drehendem Achsstift |
Family Cites Families (7)
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 |
-
1983
- 1983-08-27 DE DE3331031A patent/DE3331031C2/de not_active Expired
-
1984
- 1984-05-17 DE DE8484105617T patent/DE3473309D1/de not_active Expired
- 1984-05-17 EP EP84105617A patent/EP0149701B1/de not_active Expired
- 1984-08-24 KR KR1019840005146A patent/KR860000951B1/ko active
- 1984-08-27 JP JP59178172A patent/JPS6071750A/ja active Granted
-
1985
- 1985-12-09 US US06/807,763 patent/US4601180A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4601180A (en) | 1986-07-22 |
KR860000951B1 (ko) | 1986-07-23 |
KR850002496A (ko) | 1985-05-13 |
EP0149701A2 (de) | 1985-07-31 |
DE3331031C2 (de) | 1985-07-11 |
JPS6071750A (ja) | 1985-04-23 |
DE3473309D1 (en) | 1988-09-15 |
DE3331031A1 (de) | 1985-03-14 |
EP0149701A3 (en) | 1986-10-08 |
JPS6125823B2 (ja) | 1986-06-17 |
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