EP1028185B1 - Aiguille de transfert pour le transfert de maille - Google Patents

Aiguille de transfert pour le transfert de maille Download PDF

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Publication number
EP1028185B1
EP1028185B1 EP99121389A EP99121389A EP1028185B1 EP 1028185 B1 EP1028185 B1 EP 1028185B1 EP 99121389 A EP99121389 A EP 99121389A EP 99121389 A EP99121389 A EP 99121389A EP 1028185 B1 EP1028185 B1 EP 1028185B1
Authority
EP
European Patent Office
Prior art keywords
needle
transfer
recess
spring
shaft
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 - Lifetime
Application number
EP99121389A
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German (de)
English (en)
Other versions
EP1028185A1 (fr
Inventor
Oskar Schaffer
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
Publication of EP1028185A1 publication Critical patent/EP1028185A1/fr
Application granted granted Critical
Publication of EP1028185B1 publication Critical patent/EP1028185B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 neck needle for stitch-forming machines for the manufacture of textiles Fabrics.
  • Circular knitting machines with cylindrical needles and disc needles serve. Individual stitches correspond to the pattern from cylinder needles to disc needles or vice versa transfer. Special needles, the stitch transmission elements, serve this purpose have and transfer needles or transfer needles to be named.
  • the corresponding cut surfaces of the slide and of the shaft form a guide surface, both facilitate the penetration of another needle into the space should.
  • DE 1 560 996 is a stitch transfer needle or neck pin that is not known as a slide pin, but is designed as a latch needle. Corresponding it has a solid needle shaft without a slide element on. In order to effect the stitch transfer, the latch needle points a laterally cranked shaft. The one from that Part of the Shank is stepped and has a high and a low section. Starting from the low Section extends a groove over the back of the needle up to the high shaft section in which the groove extends over the Side face of the needle opens completely.
  • DE 31 45 708 C2 is for flat knitting machines provided transfer needle known for stitch transfer a shoulder spring on its side (“Spread spring”).
  • This is as a leaf spring trained and with one end fixed to the needle shaft connected. The other, free end of the leaf spring forms with the needle shaft a space into which another Needle with its hook and shaft can enter.
  • Both the leaf spring and the needle shaft are on their respective underside with an oblique guide surface provided that the penetration of a needle in the Space between the spreading spring and the needle shaft should facilitate.
  • the one provided on the shaft The guide surface is largely flat. It stretches from the back of the needle to the side of the needle.
  • the neck spring is subject to the neck needle while operating a relatively strong dynamic Burden.
  • the free end of the neck spring can already be used from the needle shaft to which the neck spring is attached is to be pushed sideways. This is done in a narrow needle guide channel, on the flank of which the neck spring can be relative to the neck spring strong local deflections result in excessive loads to lead. If this causes a broken spring, it is Lanyard no longer operational. The person in question The knitting machine must then be stopped and serviced.
  • a neck needle is known from DE-A-2847972, the one shaft with one held laterally on the shaft Has neck spring. On the shaft is below the Neck spring formed a side recess that inserting another needle to take over stitches should facilitate.
  • the recess has a first, at the needle back surface section, a middle, adjoining this surface section Surface section that is approximately parallel to the flank of the shaft is aligned, and a third surface section, that borders the flank of the shaft. The first and the third surface sections close together butt Angle that opens away from the neck spring.
  • This configuration leads to a relatively strong one lateral pushing out of the piercing needle and in succession its a heavy load on the neck spring.
  • the neck needle according to the invention has on its side surface a recess on that from a neck spring is covered.
  • the latter is one-sided with the needle body connected and lies with a preferably tapered Tongue in a recess in the needle shaft.
  • the recess places a guide surface on the needle shaft stuck to the penetrating hook of another needle can slide along.
  • the guide surface extends along the recess from the needle back to the needle side surface. In doing so, she changes her way Angle to the back of the needle.
  • the leadership area has a border on the back of the needle, first section and a bordering side of the needle, second section, with both sections together enclose an obtuse angle. So that is Guide surface is concave.
  • the needle shaft becomes too weak in the area the recess avoided. In doing so, it becomes possible the depth to enlarge the recess compared to conventional geometries, without excessive weakening of the needle shaft to have to put up with. Ultimately, it can the timing of the deflection of the neck spring influence positively. There may be spring breaks as they result the dynamic load on the neck spring in particular avoided in the area of their free end become. The lifespan or life expectancy of a such a cap is improved.
  • the neck needle according to the invention can be designed in this way that the leadership area is in the neighborhood of that Needle back a small angle against the (main) direction the movement of a penetrating cap needle. This makes a penetrating cap needle relative slowly turned sideways and comparatively gradually accelerated. Not only the neck spring, but also also protected the penetrating cap needle.
  • the neck needle according to the invention through the special design of the guide surface of the smooth transition from the top of the needle to the side of the needle not impaired to form the stitch support edge.
  • the depth of the piercing space can, however, be increased become.
  • the recess can be designed so that it ends on the side surface of the cape.
  • the stitch support edge can thereby go through in this area without formed the recess caused profile change become. This ensures that stitches are gentle and injury free slide over this stitch support edge.
  • the concave shape of the guide surface can vary Way to be obtained.
  • the guide surface first in the longitudinal direction of the cape be arched at least in sections.
  • the curvature can be an arc, a parabola or follow another curve.
  • the recess can be formed deeper than before without the stitch support edge or the stability of the stitch-forming area of the neck needle is negative to influence.
  • the Cut-out compared to neck needles with a straight guide surface at the level of the lower edge of the neck spring by 0.1mm be deepened. This corresponds to at least half Neck spring thickness.
  • the guide surface has a crease line and through two essentially flat surface areas be fixed.
  • Appropriate angular ranges for the lower part of the Guide surface are less than 20 ° (preferably 18 °) perpendicular to one straight line at the back of the needle.
  • the upper part of the guide surface preferably more than 20 ° to this perpendicular.
  • the angle of the needle side surface is preferably still clear is set larger and is, for example, 25 ° or also more than 30 °.
  • the depth of the recess can be dimensioned in this way be on the back of the needle more than half the width the cape takes.
  • the depth of the recess is preferably already less than half the shaft thickness. In at this height, a crease line can be arranged at which the slope of the guide surface changes. alternative a curvature of the guide surface can begin here or change.
  • the transition the guide surface from a first angular orientation to another angular orientation is preferably in Essentially level with the lower edge of the neck spring established.
  • Figure 1 is a neck needle 1 based on her Shaft 2 and its hook 3 and the associated elements illustrates, with the needle foot in the illustration has been omitted.
  • the shaft 2 is divided into a high section 4 and a low section 5. Both sections 4, 5 project from a common needle back 6 starting from.
  • the shaft 2 In the transition from the high section 4 of the shaft 2 faces the low section 5 the shaft 2 has a step 8 on its upper side 7.
  • the shaft 2 extends in both sides of the step 8 a longitudinal direction L cranked and straight, which with the Main direction of movement of the transfer needle 1 matches.
  • a recess 11 that the receiving the hook of a further transfer needle 1 'is used. This is particularly indicated in Figure 2.
  • the recess 11 forms a lateral recess in the shaft 2 and runs thus from the needle back 6 to one between Needle back 6 and top 7 extending needle side surface 12. Between the needle side surface 12 and the top 7 is a mesh support edge 14 formed by the recess 11 is not reached.
  • the recess 11 is largely from a neck spring 15 covers that in the present embodiment is designed as a box spring.
  • the neck spring 15 is a leaf spring with a flat, essentially rectangular holding section 16 which in a lateral Recess 17 of the shaft, for example by means of several impressions 18, is held. Handed out of the holding section 16 the neck spring 15 is cranked away from the shaft 2, so that another section 19 of the neck spring parallel and at a distance from the rest of the shaft 2 extends. In the corresponding section 19 adjacent The area of the shaft 2 can be somewhat thick be reduced. The shaft 2 can thus from the crimping point the shoulder spring 15 starting from a point 21 slightly be narrower than in the rest Areas.
  • the height of section 19 of the neck spring 15 is reduced with respect to the longitudinal direction L of the shaft 2 with a level 22 approximately in the same place as in the shaft 2 can be found.
  • Figure 2 shows the neck needle 1 in side view illustrated. Starting from level 22, it narrows the neck spring 15 continues so that it ultimately turns on their end 23 ends more or less pointedly.
  • the bend the neck spring 15 can be seen in particular in FIG. 3.
  • the neck spring 15 extends from their offset 24 approximately parallel to the shaft 2, the tapered section with its end 23 again the shaft 2 is bent and here in a groove 25 the shaft 2 is under prestress.
  • a lancing space 27 (space) formed because of the formation of the neck spring 15 as a so-called box spring is sometimes referred to as box room 27.
  • the neck spring points between the crank 24 and the step 22 15 on the flat, plate-like section 19. This and / or section 9 lies on a flank F. a needle channel or can at least with this to come into a position.
  • the recess 11 is opposite on the top 7 one in the side surface adjoining here recess 28 formed therein, which the Guidance of stitches lying on the shaft 2 is used.
  • the Recess 28 is opposite the recess 11, so that there is a reduction in the cross section of the shaft 2 results. To keep this as low as possible, the comparatively larger recess 11 the special, in Figure 4 illustrated form.
  • the recess 11 is towards the shaft 2 from one Limited guide surface 29, which is following the Needle back 6 at an acute angle to a direction V (figures 1 and 4) extends at right angles to the needle back 6 is oriented and roughly indicates the direction, in which a piercing cap needle 1 '(Fig. 3) is moved.
  • the guide surface 29 is facing the Needle side surface 12 is concave. It shows one first surface area 31, which directly adjoins the Needle back 6 connects and at least in a middle Area is at least approximately planar.
  • the recess 11 runs in the longitudinal direction L on the shaft 2 preferably flat at both ends. Here can surface area 31 may be somewhat curved.
  • the cross-sectional area shown in black in FIG. 4 becomes of the shaft 2 for the shaft 2 and thus preserved in favor of its stability.
  • the depth 30 of the Recess 11 is measured on the lower edge 32 of the neck spring 15, opposite a continuous guide surface significantly enlarged with the angle of 25 °.
  • the increase the depth of the recess 11 can be more than half the thickness of the neck spring 15.
  • the second surface area 34 can, as in FIG indicated by a line 36, flat, i.e. within the Cutting plane are formed straight. However, it can also have a radius R, i.e. arched become.
  • the curvature can be constant, i.e. a constant Have radius. Alternatively, the radius also change depending on the angle, so that deviating from the circular arc Curvatures are achievable.
  • the transfer needle 1 works as illustrated in FIG. 2:
  • FIGS. 5 to 7 The situation is different with the cap 1a according to the prior art, as shown in FIGS. 5 to 7 is shown on the left. It is for reference same reference numerals, supplemented with a to distinguish them Letter index "a" used.
  • the invention Shoulder needles 1 and the conventional shoulder needles 1a are on the right and left sides in Figures 5 to 7 illustrated in the same working stage.
  • the Neck spring 15a of the conventional neck needle 1a the penetrating cap needle 1a 'is lifted from the shaft 2a becomes. It is against the flank F of the needle channel urged in which the cap needle 1a runs.
  • the corresponding one Support point at which the neck spring 15a on the Edge F starts, is designated by 40 in FIG. It this results in a short lever length of the deflected section the neck spring 15a on the tapered Section 9a of the neck spring 1a. This corresponds to one high material load, like the figure on the right 5 shows in the case of the transfer needle 1 according to the invention is avoided.
  • the piercing neck needle penetrates 1 'so far into the puncture chamber 27 that they with its hook leaves the guide surface 29 and the Side surface 12 of the transfer needle 1 reached.
  • the needle 1 'so far in the direction of arrow 42 Figure 2 penetrated to an area sufficient Distance between the neck spring 15 and the side surface 12 reached to be able to advance without the neck spring 15 significantly deflect.
  • the result is the piercing process the transfer needle 1 'by the according to the invention modified shape of the guide surface 29 so far optimized, that the bending load of the neck spring 15 compared decreases to the state of the art.
  • the lifespan is increasing.
  • a transfer needle there is a recess in the shaft 2 11 provided, which is covered by a shoulder spring 15 becomes.
  • the recess creates a guide surface 29 fixed with the neck spring 15 a puncture 27th for a penetrating or piercing cap 1 ' stipulates the transfer of stitches.
  • the guide surface 29 is divided into at least two surface areas 31, 34 which blunt with each other, to the neck spring 15 Include an opening angle.
  • the single ones Surface areas 31, 34 can each be flat or be arched. Overall, there is a concave Design of the management area, what the dynamic Loads on the neck spring 15 reduced.

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

Claims (11)

  1. Aiguille de transfert (1) pour des machines de tricotage, comportant :
    un corps d'aiguille présentant une tige longitudinale (2) avec un corps d'aiguille (6) et une surface latérale d'aiguille (12)
    un ressort de transfert (15) fixé sur la tige (2) qui détermine avec celle-ci un espace intermédiaire (27)
    un évidement (11) réalisé sur le côté de la tige (2) et appartenant à l'espace intermédiaire (27) qui est déterminé par une portée de guidage (29) s'étendant du dos de l'aiguille (6) à la surface latérale d'aiguille (12) et qui présente au moins une partie (34) se terminant sur la surface latérale (12) et ainsi qu'une partie (31) se terminant sur le dos d'aiguille (6), ces parties faisant entre elles un angle obtus,
    caractérisée en ce que l'angle obtus que forment la partie (34) se terminant sur la surface latérale de l'aiguille et la partie (31) se terminant sur la partie de l'aiguille (6) s'ouvre sur le ressort de transfert (15) de sorte que la portée de guidage (29) est concave dans son ensemble.
  2. Aiguille de transfert selon la revendication 1, caractérisée en ce que l'évidement (11) présente, par rapport à la face supérieure d'aiguille (7) située à l'opposé du dos (6) de celle-ci, une distance telle qu'entre la face supérieure d'aiguille (7) et la surface latérale d'aiguille (12) un bord continu d'appui de la maille ( 14) est formé également dans la zone d'évidement (11).
  3. Aiguille de transfert selon la revendication 3, caractérisée en ce que la portée de guidage (29) présente un bombé par rapport à la direction longitudinale (L) de l'aiguille de transfert (1).
  4. Aiguille de transfert selon la revendication 1, caractérisée en ce que la portée de guidage (29), par rapport à la direction (V) essentiellement perpendiculaire à la direction longitudinale (L) et allant du dos d'aiguille (6) à la surface opposée (7) de l'aiguille, est bombée au moins en partie.
  5. Aiguille de transfert selon la revendication 4, caractérisée en ce que le bombé suit un arc de cercle.
  6. Aiguille de transfert selon la revendication 4, caractérisée en ce que le bombé suit une parabole.
  7. Aiguille de transfert selon la revendication 1, caractérisée en ce que la portée de guidage (29) présente au moins une ligne coudée (33) disposée de préférence selon la direction longitudinale.
  8. Aiguille de transfert selon la revendication 1, caractérisée en ce que la portée de guidage (29), sur le dos de l'aiguille (6), fait avec la direction (V) un angle inférieur à 20°, tandis que la portée de guidage (29) fait sur la surface latérale de l'aiguille (12), avec la direction (V), un angle qui est supérieur à 20°.
  9. Aiguille de transfert selon la revendication 8, caractérisée en ce que la portée de guidage (29), sur la surface latérale d'aiguille (12) fait avec la direction (V) un angle qui est supérieur à 25°, et de préférence à 30°.
  10. Aiguille de transfert selon la revendication 1, caractérisée en ce que l'évidement (11), sur le bord d'aiguille (6), occupe plus que la moitié de la largeur de l'aiguille de transfert (1).
  11. Aiguille de transfert selon la revendication 7, caractérisée en ce que le passage, déterminé par la ligne coudée (33), de la portée de guidage (29) d'une première orientation angulaire à une autre orientation angulaire, est disposé à une hauteur avec un bord inférieur (32) du ressort de transfert (15).
EP99121389A 1999-02-11 1999-10-27 Aiguille de transfert pour le transfert de maille Expired - Lifetime EP1028185B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19905668 1999-02-11
DE19905668A DE19905668C2 (de) 1999-02-11 1999-02-11 Umhängenadel zur Maschenübertragung

Publications (2)

Publication Number Publication Date
EP1028185A1 EP1028185A1 (fr) 2000-08-16
EP1028185B1 true EP1028185B1 (fr) 2004-07-07

Family

ID=7897155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99121389A Expired - Lifetime EP1028185B1 (fr) 1999-02-11 1999-10-27 Aiguille de transfert pour le transfert de maille

Country Status (5)

Country Link
US (1) US6298693B1 (fr)
EP (1) EP1028185B1 (fr)
JP (1) JP4369000B2 (fr)
DE (2) DE19905668C2 (fr)
ES (1) ES2219978T3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227533C1 (de) * 2002-06-20 2003-12-11 Groz Beckert Kg Nadel mit Umhängefeder
US7614255B2 (en) * 2005-04-06 2009-11-10 Groz-Beckert Kg Cutting needle
EP1948859B1 (fr) * 2005-11-18 2010-03-31 SANTONI S.p.A. Aiguille pour transferer des mailles a partir de celle-ci a des aiguilles adjacentes pour machines a tricoter ou analogues
EP1887117B1 (fr) 2006-08-11 2010-03-17 Groz-Beckert KG Aiguille à clapet pour machine textile à former des mailles
EP2009160B1 (fr) * 2007-06-26 2016-09-28 Groz-Beckert KG Aiguille coupante dotée d'une lame réglable
EP2096200B1 (fr) * 2008-02-27 2011-06-08 Groz-Beckert KG Aiguille de transfer avec pointe de ressort installée à l'intérieur
IT1403218B1 (it) 2011-01-05 2013-10-17 Santoni & C Spa Macchina circolare monocilindro per calze da uomo, del tipo con aghi sul platorello
CN102560874A (zh) * 2011-12-20 2012-07-11 常州思成凯业精密制针有限公司 一种改进的舌针
US9587548B2 (en) 2014-09-02 2017-03-07 Arctic Cat, Inc. Oxygen sensor cooling duct
EP3015209B1 (fr) * 2014-10-27 2017-02-22 Hugo Kern und Liebers GmbH & Co. KG Platinen- und Federnfabrik Aiguilles ou platines pour machines textiles et procédé de fabrication d'une aiguille ou d'une platine pour des machines textiles
CN109112710B (zh) * 2018-10-11 2020-01-21 宁波慈星股份有限公司 一种针板插片的加工方法
CN111286863A (zh) * 2020-01-14 2020-06-16 冯加林 一种织针

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GB681136A (en) * 1950-04-14 1952-10-15 Hemphill Co Improvements in or relating to knitting needles and transfer bits for knitting machines
US2626515A (en) * 1950-04-14 1953-01-27 Hemphill Co Knitting needle and transfer bit
US2667770A (en) * 1950-08-23 1954-02-02 Ordnance Gauge Company Transfer needle for knitting machines
DE1560996B1 (de) * 1962-06-08 1970-11-19 Dubied & Cie Sa E Flachstrickmaschine zur Herstellung sowohl von Rechts/Rechtsware als auch von Umhaengemustern und/oder von Minderungen ohne Nadelbettversatz
ES238334Y (es) * 1978-08-28 1980-01-16 Mestre Mas Matias Aguja de transferencia de mallas para maquinas de tejido de punto.
DE3145798C2 (de) 1981-11-19 1983-11-03 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Luntensperrvorrichtung an Spinnmaschinen-Streckwerken
ES256197Y (es) * 1981-01-27 1982-04-16 Aguja de transferencia de malla para maquinas de generos de punto
IT8321328V0 (it) * 1983-03-30 1983-03-30 Santoni & C Spa Ago del piatto composito per macchina circolare monocilindrica per calzetteria atta a produrre maglia a costa.
DE3401874A1 (de) * 1984-01-20 1985-07-25 Haase & Kühn S.A., Les Geneveys, Coffrane Umhaengenadel und verfahren zu ihrer herstellung
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IT1185187B (it) * 1985-07-04 1987-11-04 Mecmor Spa Dispositivo per il passaggio del punto da un ago per la formazione di maglia diritta ad un ago per la formazione di maglia rovescia e viceversa,in una macchina per maglieria e simili
JPH0578962A (ja) * 1991-09-17 1993-03-30 Shima Seiki Mfg Ltd 編機用コンパウンドニードル

Also Published As

Publication number Publication date
EP1028185A1 (fr) 2000-08-16
US6298693B1 (en) 2001-10-09
JP2000234248A (ja) 2000-08-29
DE59909904D1 (de) 2004-08-12
ES2219978T3 (es) 2004-12-01
DE19905668C2 (de) 2001-01-25
JP4369000B2 (ja) 2009-11-18
DE19905668A1 (de) 2000-08-17

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